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HomeMy WebLinkAbout6 - Final recommendatin on Gregory Canyon Creek Flood Mapping Study CITYOFBOULDER WATER RESOURCES ADVISORY BOARD AGENDA ITEM MEETING DATE: August 17th, 2009 AGENDA TITLE: Final Recommendation on Gregory Canyon Creek Flood Mapping Study PRESENTER/S: Ned Williams, Director of Public Works for Utilities Bob Harberg, Utilities Planning and Project Management Coordinator Annie Noble, Greenway Coordinator Christie Coleman, Engineering Project Manager EXECUTIVE SUMMARY: Staff is currently updating the Gregory Canyon Creek flood mapping study and began the associated public process with a neighborhood open house on July 8 and explanatory WRAB meeting on July 20th (additional reference information may be found in the agenda memorandum from the July 20th WRAB meeting.) The Gregory Canyon Creek study extends from the confluence with Boulder Creek upstream past the southern city limits approximately 300 feet south of Flagstaff Road. The updated study is proposed to be submitted to the Federal Emergency Management Agency (FEMA) for regulatory adoption and will revise Flood Insurance Rate Map (FIRM) 08013C0395F and FIRM 08013C0535F along Gregory Canyon Creek. This flood study will also revise the current City of Boulder Gregory Canyon Creek floodplain which differs from the FEMA floodplain in that it is a detail analysis which incorporates a conveyance and high hazard zone. The proposed flood study will provide the basis for land use applications and flood insurance requirements for properties projected to be impacted by the 100-year flood. At the July 20th WRAB meeting staff presented the extent and components of the mapping study update. During this meeting staff also received feedback from the WRAB members. Staff response and additional research related to this feedback is included in Attachment A. A copy of the Gregory Canyon Creek letter of map revision and associated workmaps are included as Attachments B and C. Next Steps: City staff has researched and responded to feedback provided by the WRAB in the July 20th meeting and based on the results of this response requests a final recommendation to submit the finding to the Planning Board, City Council and FEMA. If the project receives a favorable recommendation the project will proceed to the city's Planning Board and City Council which will also be asked to review and concur that the results AGENDA ITEM # 6 PAGE 1 should be submitted to FEMA. The Planning Board public hearing and discussion is tentatively planned for September. The City Council public hearing and discussion has not yet been scheduled but is anticipated to occur in October or November Based on recommendations from the WRAB, Planning Board and City Council, it is anticipated that the study results will be submitted to FEMA for approval in December of 2009 or January of 2010. It is likely that the FEMA review period may take 3-5 months. FEMA will also solicit public comment as part of their review process. Provided FEMA accepts the study results, the Colorado Water Conservation Board will also be asked to adopt the study results and associated flood hazard mapping. Options: WRAB options for review and consideration include: ■ Accept the updated flood study and recommend that Planning Board and City Council approve submittal of the study to FEMA for federal review and adoption; ■ Request additional public involvement, information or evaluation of the flood hazard situation; or ■ Reject the flood study and recommend continued use of the 1987 Greenhorne & O'Mara flood study. Staff recommendation: Staff recommends that the WRAB recommend approval of the updated Gregory Canyon Creek Floodplain Mapping Study Update and submittal of the study to FEMA for regulatory adoption. ATTACHMENTS: Attachment A - Summary of WRAB Feedback with Staff Response and Additional Research Attachment B - Request for Letter of Map Revision Gregory Canyon Creek, City of Boulder, Colorado Attachment C- Gregory Canyon Creek Floodplain Workmaps AGENDA ITEM # 6 PAGE 2 Attachment A CITY OF BOULDER Department of Public Works/Utilities Division . ; Planning and Project Management V PO Box 791 1739 Broadway Boulder, CO 80306 (303) 441-3266 (303) 441-4271 FAX WRAB July 20th' Meeting Member Feedback or Questions with Response and Additional Research• 1. How were road crossings modeled? Were any structures assumed to be washed out? David Love indicated that the percent of probable debris blockage was assessed by Alan Taylor of the city and David Love from Belt Collins West through a site visit to each structure and that no structures were modeled as being washed out. 2. Did anyone from other neighborhoods or any environmental groups come to the July Stn open house? Christie answered that properties located in the 100-year or 500-year floodplains were notified individually of the open house. The open house was also listed on the main city calendar on the internet and advertised in the Daily Camera on July 5tn. To staff's knowledge, no environmental groups or public outside of the drainage way came to the open house. 3. How many people came to the open house? Christie indicated that approximately 30 to 40 people came to the open house. 4. If a property with grandfathered flood insurance rates is sold, will the reduced insurance rates transfer to the new owner? Only if the original homeowner assigns the policy to the new owner. 5. What is the effect to non-conforming structures in the floodplain? If a new flood insurance policy is applied for, the rates for non-conforming structures can be based on the flood insurance rate map zone and base flood elevation on the flood insurance rate map in effect on the date the building was constructed provided that the building was built in compliance with the map in effect at the time of initial construction, Attachment A the building has not been substantially improved, and the building has not been altered in any way that has resulted in a lowest floor lower than the base flood elevation on the flood insurance rate map in effect at time of initial construction. 6. Historically, FEMA has had a difficult time enforcing the mandatory requirement for flood insurance. Has an effective enforcement mechanism been instituted? The National Flood Insurance Reform Act of 1994 tightened the requirements for federally backed mortgage companies to require flood insurance for properties in the 100-year floodplain located in communities participating in the National Flood Insurance Program. The National Flood Insurance Reform Act of 1994 requires flood insurance at any time during the term of the loan when the lending institution determines that the building or manufactured home is or will be located in a special flood hazard area. The 1994 Reform Act also mandates flood insurance coverage even if the special flood hazard area designation is first identified after settlement, but during the term of the loan because of remapping or other reasons. 7. Has the city investigated the effects to the floodplain of potential channel and bridge improvements? Ned indicated that any effects to the floodplain from channel and bridge improvements would be part of a flood mitigation plan that could potentially be completed as a study subsequent to this remapping effort. Potential channel and bridge improvements may be limited by the city's right-of-way and/or the ability to obtain right-of-way agreements from private landowners. 8. What effects do drainage crossings have on the newly identified split flow that starts at approximately the intersection of 9th St and Marine Street? The 100-yr spill flow from the main channel is 1,185 cubic feet per second (cfs), or 56.6% of the total 100-yr flow of 2,092 cfs just upstream of the spill. The majority of the spill flow (1,058 efs of the total 1,185 cfs spill) leaves the main channel between Arapahoe Avenue and just upstream of the alley crossing located between Marine Street and Arapahoe Avenue (between Cross Sections 50 and 100 which are shown in the attached workmaps and LOMR). The drainage channel and above-mentioned culverts are significantly undersized, which when coupled with topography which slopes to the northeast, causes the majority of the newly identified spill across 9th Street. The main channel at Cross Section 90 located just downstream of the alley culvert is narrow and only 3.5-ft deep and only conveys approximately 400 cfs before overtopping. Therefore, even if the culverts were upsized, the spill would continue to occur unless major drainageway improvements were implemented between Arapahoe Ave. and Marine St. Attachment A 9. Has the floodplain been modeled with all bridges and culverts removed? The floodplain has not been modeled with the removal of bridges and culverts as this would not represent the most realistic flooding condition. The floodplain model does incorporate a debris analysis in which each drainage structure was evaluated for its potential to clog when flooded and modeled as having an appropriate percentage of blocked open area in the hydraulic model. Most drainage crossings are inundated in a 100-year event which in some locations leads to split flows down adjacent roads. This study identifies one large split flow originating near 9th and Marine caused primarily by inadequate channel and culvert capacity between Marine Street and Arapahoe Avenue. 10. Are city properties affected and does the city mandate bringing their own buildings into conformance with flood regulations? Christie answered that there are city properties affected by the mapping update. Ned indicated that, consistent with the Boulder Revised Code, city buildings are brought into conformance when they are redeveloped or substantially modified. 11. Does the city have an evacuation plan? Ned answered that the city uses public education to inform residents of flood risk and need for flood preparedness. In the event of a flood, city and county emergency response staff will sound flood warning sirens and, to the extent possible, go out in the field to notify residents and assist with evacuations. In the event that there isn't sufficient time or resources available to assist with evacuations, it is important that residents understand the flood risk and take personal responsibility for precautions to monitor weather conditions that may affect flooding and plan evacuation routes and other logistics. 12. A member of the public requested to see detailed maps of the floodplain. Christie indicated that this information is available at the project's website located at www.boulderwater.net under the "Projects & Programs" section. Members of the public can also call or email Christie Coleman at 303-441-4077 or colemancLa)bouldereolorado.gov. Attachment B REQUEST FOR LETTER OF MAP REVISION GREGORY CANYON CREEK CITY OF BOULDER, COLORADO BELTCOLLINS PREPARED FOR: City of Boulder P.O. Box 791 Boulder, Colorado 80306 PREPARED BY: BELT COLLINS WEST (formerly LOVE & ASSOCIATES, INC.) 800 Jefferson Avenue, Suite B Louisville, CO 80027-1873 (303) 673-9795 (303) 673-9796 (fax) nlove@loveassociates.com March 18, 2009 Job No. 0328A REQUEST FOR LETTER OF MAP REVISION GREGORY CANYON CREEK, CITY OF BOULDER, COLORADO Table of Contents REPORT 1.0 INTRODUCTION 1 1.1 Purpose of Study 1 1.2 Authority and Acknowledgement 1 1.3 Base Information 1 2.0 STUDY AREA 2 2.1 Scope of Study 2 2.2 Community Description 2 2.3 Principal Flooding Problems 2 2.4 Project Description 4 3.0 ENGINEERING METHODS 4 3.1 Hydrologic Analysis .................................................................................................................4 3.2 Hydraulic Analysis 4 3.3 Results 7 4.0 FLOODPLAIN MANAGEMENT APPLICATIONS 11 5.0 GENERAL IMPACTS 11 6.0 CONCLUSIONS 12 7.0 REFERENCES ....................................................................................................................................13 Figures Figure 1 - Vicinity Map 3 Tables Table 1 - Peak Discharges 4 Table 2 - Manning's `n' Values 5 Table 3 - Debris Blockage Values 6 Table 4 - Structure Types and Sizes 6 Table 5 - Post-Project Main Channel Water Surface Elevations 9 Table 6 - Post-Project Spill Reach Water Surface Elevations 11 Appendix Appendix 1 ..................................................................................................................FEMA Documentation FEMA Forms Annotated FIRM Flood Profiles Appendix 2 Gregory Canyon Creek Hydrology and Hydraulics Hydrology Memo Hydraulic Models (CD) Appendix 3 Floodplain Work Maps Appendix 4 .............................................................................................As-Built Plans and Certified Survey REQUEST FOR LETTER OF MAP REVISION GREGORY CANYON CREEK, CITY OF BOULDER, COLORADO 1.0 INTRODUCTION Community Name: City of Boulder County: Boulder State: Colorado 1.1 Purpose of Study This Letter of Map Revision (LOMR) request is being submitted to update the Gregory Canyon Creek floodplain. The existing floodplain is based upon an approximate study. The current study will update the floodplain and establish base flood elevations using detailed methods. The detailed study will include improvements and changes along Gregory Canyon Creek which have occurred since the Flood Hazard Area Delineation (FHAD), Boulder and Adjacent County Drainageways was completed by Greenhorne & O'Mara, Inc. and approved by FEMA in 1987. The FHAD is based on a HEC-2 analysis (detailed analysis) of Gregory Canyon Creek, however, the Flood Insurance Rate Map (FIRM) shows the Gregory Canyon Creek floodplain as a Zone A, or approximate, floodplain. The City of Boulder (City) has requested hydraulic remodeling from upstream of Flagstaff Road to the confluence with Boulder Creek, a stream reach of approximately 1.2 miles. The study will reflect updated topographic mapping and creek crossings and utilize the most current detailed hydraulic modeling methodology. This study will update the FIRM Panel Numbers 08013CO395F and 08013CO535F (FEMA, 1995). 1.2 Authority and Acknowledgment This document provides the information necessary to fulfill the requirements of a LOMR for Gregory Canyon Creek within the City. The study was performed under a contract between Love & Associates, Inc. and the City. The study reach, design parameters, and 500-yr hydrology were selected and/or approved by the City. The study was reviewed and approved by both the City and an independent peer reviewer (Doug Laiho, PE with AMEC). 1.3 Base Information The topographic information utilized for the study was obtained from 1-foot contour interval aerial topographic maps (Datum: Horizontal - NAD83, Colorado State Plane Coordinates, Vertical - NAVD88; Merrick, 2003). LIDAR topographic mapping in densely vegetated floodplain areas was used to supplement the 1-ft contour mapping (Merrick & Company, 2004). Field survey data for structures and select cross sections was obtained by Robert Sayre, PLS (Sayre, 2005 & 2008). The 10-, 50-, and 100-year hydrology for this study is taken from the HEC-2 model, Greg.dat, which was developed for the FHAD approved in 1987. The 500-year hydrology was extrapolated from the 10-, 50-, and 100-year events and is consistent with the hydrology of other comparably sized streams in the area. Development of the 500-year hydrology was reviewed by the City and accepted and is described in Hydrology Report For 500 year Extrapolated Flows for Gregory Canyon Creek, Boulder, Colorado (Love & Associates, 2005). -1- Since the FHAD was approved, the City has made improvements to the channel including modifications to structures at Pleasant Street, 7rh Avenue, Aurora Avenue, and Willowbrook Road. The revised study also includes bridges and culverts not previously included in the FHAD analysis. These driveway and patio crossings are at 810 Marine, 704 Pleasant Street, and the private drive upstream of Aurora. Though the FHAD defines 100-year water surface elevations, FEMA has not approved base flood elevations for Gregory Canyon Creek. The Effective floodplain is an approximate Zone A floodplain. The hydraulic analysis of the study reach utilizes HEC-RAS ver. 4.0.0 developed by the US Army Corps of Engineers (USAGE, 2008). 2.0 STUDY AREA 2.1 Scope of Study This LOMR consists of a detailed analysis of the 10-, 50-, 100- and 500-year flood events along Gregory Canyon Creek using HEC-RAS hydraulic modeling. The study reach is comprised of public and residential properties. The study area, shown on the Vicinity Map (Figure 1), extends from the confluence of Gregory Canyon Creek and Boulder Creek to the upstream city limits just south of Flagstaff Road. The study is located in part of Section 36, Township 1 North, Range 71 West, and a small part of Section 1 Township 1 South, Range 71 West. The LOMR is only being requested for that portion of the study reach within the City of Boulder. The FEMA forms supporting this LOMR can be found in Appendix 1. 2.2 Community Description The requested revisions for this LOMR of Gregory Canyon Creek are located completely within the City of Boulder, which is located in central Boulder County northwest of Denver on the east side of the Rocky Mountains in Colorado. The City, with an estimated population of 101,500, encompasses approximately 24 square miles of moderately steep, rolling terrain. The underlying geologic formation consists of an alluvial floodplain extending from the base of the Front Range of the Rocky Mountains eastward. The climate is relatively dry and averages approximately 18.3 inches of precipitation per year. The average elevation is 5344 feet and ranges from about 5150 to 8500 feet. The upslope areas are covered with a variety of rock outcroppings, thin residual soils on bedrock, and thicker debris, alluvium, and slope wash deposits and are vegetated with grasses, trees, and shrubs. Deeper soils and wetland vegetation are found on alluvial deposits adjacent to streams. The City includes residential and conunercial development and open space. 2.3 Principal Flooding Problems The principal cause of flooding problems is intense localized thunderstorms. The steep terrain in the watershed contributes to flash flooding. During a 100-year flooding event, small flows travel down side streets away from the stream creating local areas of shallow flooding in addition to the overbank flows generated during the event (FEMA, 2002). 2 28 Jan 2009 - 8:22am - ,"ROJECTS - CLIRRENT\2003-J'ROJF(.TS\0328C\DRAWINCS\V,CNITY MAP.DWG A S. RL ~1 _ ~ J'4 UIA CANYON BL O a U, CREEK BEACON T gOO~pER C N.(ON B~ P-~N eOL ARAPAHOE AV ~~Fp r r r vr) n = 2 S ~ ~ H r O~ S MARINE ST S N"( Na s GRANOVIEN P ~n LO a LO UNIVERSITY AV PROJECT SITE GO a PL SANT ST py PL ~ FENNSYLVANIA AV HAPGOOD ST PEN YLVANI AV \ r COLLEGE AV G NEVA aR crn ROSE L r EUCLID AV w _J M EUC I AV ~ I Ln S F - AURORA AV o~ A\ z - ~cS a~' o U y o 'PG CHRISTMAS REE DR CASCADE AV O OJ J N J J d d r r r r r _ 3 r r r r z to to to to to Q N cn cn z N 0 ~Q~~O crD n GO (.D 0)) J O N rr7 o% a BASELINE RD COLUMBINE AV a 4~ z_ CLEMATIS D 01 o X00 ~O~ Ao GILLARDIA LN ~`~OROS r O~ CPS MORNI G LORY DR MARIPOSA AV aO~ PRIMRO E D ~~G o BLUEBELL AV o V AST R N bV w Figure 1 VICINITY MAP Bell Collins West (formerly Love 8 Associates, Inc.) r~ 800 Jefferson Avenue, Suite 0 400' 800' GREGORY CANYON CREEK t B Lo303u-isville,673-9795 f: 303-673-9796 Colorado 002727-1 18CITY OF BOULDER : nlove@beltcollinswest.com NORTH SCALE IN FEET 1/27/09 2.4 Project Description Numerous alterations along Gregory Canyon Creek have been constructed since the 1987 FHAD. These include improved structures at Pleasant Street, 7"' Avenue, Aurora Avenue, and Willowbrook Road. Additional structure crossings which were omitted from the FHAD analysis have been included in the Post-Project Model. This analysis incorporates the existing physical features and develops the 100- and 500-year floodplain. In addition, the boundaries for the 0.5-ft rise floodway have been computed and mapped. 3.0 ENGINEERING METHODS 3.1 Hydrologic Analysis The 10-, 50-, and 100- year hydrology used for this analysis was taken directly from the HEC-2 model used for the FHAD and approved by FEMA in 1987. No 500-year hydrology was available for this stream. The 500-year flow data was extrapolated from the 10-, 50-, and 100- year peak flow values. A summary of the discharges used in this study are shown in Table 1. A memo discussing the extrapolation of the 500-year flows can be found in Appendix 2 (Love, 2005). Table 1 Peak Discharge for Gregory Canyon Creek (cfs) Location 10- r 50- r 100- r 500- r* Confluence with Boulder Creek XS 10 - XS 180 673 1672 2092 3700 University Ave (XS 190 - XS 318) 600 1504 1900 3300 College Ave (XS 330 - XS 455) 495 1286 1700 3000 Willowbrook Road (XS 460 - XS 600) 400 1060 1450 2600 `Extrapolated from the 10-, 50-, and 100-year events 3.2 Hydraulic Analysis The hydraulic analysis for this study was performed utilizing the Corps of Engineers' HEC-RAS step-backwater computer program version 4.0.0. The topographic data used for this analysis includes the City of Boulder LIDAR-enhanced topographic mapping, 2003/2004. Additional field survey at structures and select cross sections was also utilized. Gregory Canyon Creek is a tributary of Boulder Creek and enters Boulder Creek just upstream of 9a' Street. The methodology for setting the 100-year starting water surface elevation (SWSE) is based on that used in the HEC-2 model for the FHAD. The FHAD study used a SWSE equivalent to the 100-year water surface elevation in Boulder Creek at a point approximately 600- ft upstream of the confluence of Gregory Canyon Creek and Boulder Creek. The SWSE was adjusted for the Post-Project Model to correspond to the 100-year water surface in Boulder Creek at the location of the confluence. The confluence of Gregory Canyon Creek and Boulder Creek is located between Boulder Creek cross sections 60 and 60.1. A datum conversion of 3.2 feet was applied to translate the vertical datum elevation from NGVD29 to NAVD88. 4 The Boulder Creek FHAD defines a flood profile only for the 100-year flood. Because flood profiles for the 10-, 50-, and 500-year events are not defined, the 100-year water surface elevation in Boulder Creek was used as the starting water surface elevation for the 10-, 50-, 100-, and 500- year events in Gregory Canyon Creek. Love performed a sensitivity analysis to assess the effect of the SWEL on the water surface profiles. Because the Gregory Canyon Creek has a steep gradient and flows at or near critical at its downstream limit, the SWEL does not affect the water surface profiles in Gregory Canyon Creek beyond the most downstream cross section. The upstream limit of the model is at cross section 600. This corresponds to the upstream limit of the regulatory floodplain as well as the upstream limit of the HEC-2 FHAD model. Cross section 600 is approximately 300-ft upstream of Flagstaff Road. The cross sectional data for cross section 600 was taken directly from the FHAD model and converted to the NAVD (1988) datum. The Manning's `n' roughness coefficients used in this study are generally consistent with those used in the FHAD study. Roughness coefficients, in some cases, have been updated to more accurately represent current channel and overbank conditions. Manning's `n' roughness coefficients used in the LOMR were approved by City representatives and are based on the field conditions that currently exist; they range from 0.03 to 0.11 and are indicated by stream segment in Table 2 below. Table 2 Manning's `n' Values REACH LOB CH ROB 10-231 0.11 0.06 0.11 250-270 0.10 0.05 0.10 280-370 0.11 0.06 0.11 380-395 0.11 0.06 0.06 398-400 0.11 0.055 0.06 410-460 0.11 0.055 0.11 470-520 0.11 0.06 0.11 530-540 0.07 0.045 0.07 550 0.07 0.03 0.07 560-590 0.11 0.08 0.11 600 0.07 0.03 0.07 Expansion and Contraction coefficients of 0.3 and 0.1 respectively were applied throughout the study reach with the exception of at cross sections immediately upstream and downstream of structures. At these cross sections Expansion and Contraction coefficients of 0.5 and 0.3 respectively were applied as agreed to with the City. Debris blockage at bridges and culverts was determined in consultation with City representatives. Low flow culverts were typically assumed to have 100% blockage. Bridges which were replaced with 100-year structures since the date of the FHAD are assumed to have zero percent blockage. Intermediate blockage was assumed based on culvert conditions and historical information. The blockage was modeled by lowering the elevations of the low chord to achieve the desired percentage change in area for bridges and with an equivalent area pipe or box culvert to account for the reduction of flow area in culverts. Photos of the structures are included in Appendix 1. Table 3 summarizes the blockage used at each structure as a result of consultation with City staff. 5 Table 3 Debris Blockage Values Percent Blockage Structure Location FHAD Post-Project Comment Furthest upstream crossing catches Flagstaff Road 0 50 debris from mountain flow. Private Drive at Old Baseline Rd 100 100 No change. Private Drive on cul-de-sac 50 50 No change. Private Drive west of Willowbrook N/A 50 Significant increase in vegetation. Increase in vegetation, needs to be Willowbrook Road 50 50 maintained. Private Drive at 550 Aurora N/A 0 Aurora Avenue 50 0 New 100-year structure. Euclid Avenue 50 100 Increased vegetation. College Avenue 50 50 No change. Driveway/wooden bride N/A 75 Wood structure with multiple supports. Pennsylvania Avenue 50 50 No change. 7`I' Street (Rose Hill Drive) 50 50 Debris catches on trash rack. 704 Pleasant St Private Patio N/A 30 New structure, upstream trapping of Pleasant Avenue 50 20 debris decreases blockage. University Avenue 50 50 No change. 8t" Street 50 50 No change in blockage. Rock-lined channel with vertical rock Private Drive at 810 Marine Street N/A 50 walls. No change. Vertical rock walls Marine Street 50 50 upstream. Alley between Marine and Arapahoe 50 50 No change. Arapahoe Avenue 50 50 Gas line may result in blockage. Blockage based on upstream Private Drive (Footbridge) to school 50 50 obstruction. Table 4 shows the structure types used in the FHAD study as well as the current structures used in the Post-Project analysis. Culverts were enlarged by the City at Willowbrook Road, Aurora Avenue, and Pleasant Street. Channel and inlet improvements were made at 7m Street. Table 4 FHAD and Existing Structure Types and Sizes Structure Structural Improved Location FHAD Structure Post-Project Structure Improvement Data Flagstaff Road 72-in CMP 73.2-in CMP Private Drive Old Double 23-in steel Baseline Double 18-in CMP pipes Private Drive on cul-de-sac 72-in RCP 52.8-in RCP Private Drive West of WB Rd not included 10-ft x 5-ft bride 6 Structure Structural Improved Location FHAD Structure Post-Project Structure Improvement Data Willowbrook 36-in RCP Trans Road 30-in steel 9-ft x 5-ft RCBC Private Drive 550 Aurora Not Included 7-ft x 16-ft CBC 36-in RCP and 2 10-ft x Aurora Avenue 36-in RCP 5-ft CBC Euclid Avenue 36-in RCP 48-in RCP College Avenue 5-ft x 6-ft RCB 5.2-ft x 6-ft stone arch Private Drive Wooden Driveway Wood Bride Not Included Bride Pennsylvania 5.5-ft x 3-ft arch Avenue CMP 4.7-ft x 3-ft Arch CMP 4-ft RCP (new headwall, wingwalls, grouted riprap, and 7th Street 4-ft RCP boulder wall 704 Pleasant 2.9-ft x 5.5-ft CMP Street Patio Not Included arch 6-ft x 3.67-ft arch Pleasant Street CMP 8-ft x 4-ft RCB University Avenue 5-ft stone arch pipe 6-ft x 5-ft Arch 8th Street and 5.42-ft x 3.33-ft Alley CMP 5.5-ft x 3.2-ft CMP Driveway 810 Marine Street Not Included 3-ft x 4-ft Box Marine Street 8-ft x 4-ft RCB 8-ft x 4-ft RCB No Change No Change 5.25-ft x 3.58-ft 5.2-ft x 3.5-ft CMP Alley CMPA Arch Arapahoe Avenue 10-ft x 3-ft CBC 10-ft x 3-ft CBC No Change No Change Private Drive to School 42-in RCP 42-in RCP No Change No Change It should be noted that due to the numerous structures located within the study reach and their close proximity to one another, there were several locations where the typical number of sections for modeling structures was not used. The 0.5-ft rise floodway was defined by first using Method 4, or a specified target water surface increase, with equal conveyance reduction on both the left and right banks. Method 4 encroachments were imported into Method 1 and modified to eliminate negative surcharges and rises above 0.5-ft. 3.3 Results The hydraulic analysis described herein establishes base flood elevations (BFEs) for Gregory Canyon Creek. The Gregory Canyon Creek floodplain was previously defined using approximate methods and base flood elevations have not been previously established. The 100-year floodplain expands in some areas and contracts in others. The Post-Project base floodplain is within 50-ft of the approximate base floodplain at both the upstream and 7 downstream study limits. This study establishes a 500-year floodplain for the stream. Refer to the Floodplain Work Maps in Appendix 3 for the complete floodplain delineation. This study defines a 0.5-ft rise floodway for Gregory Canyon Creek. The Post-Project 100-year and floodway water surface elevations are shown in Table 5. The floodway delineation is included on the Floodplain Work Maps located in Appendix 3. Table 5 Post-Project Main Channel Water Surface Elevations CROSS WATER SURFACE ELEVATION SECTION WITH FLOODWAY WITHOUT FLOODWAY INCREASE 10 5361.42 5361.42 0.00 30 5370.77 5370.77 0.00 40 5372.95 5372.94 0.01 45 5375.61 5375.60 0.01 50 5378.87 5378.87 0.00 60 5381.54 5381.30 0.24 90 5389.13 5388.95 0.18 100 5390.75 5390.52 0.23 110 5394.42 5394.36 0.06 120 5398.62 5398.53 0.09 130 5401.26 5401.19 0.07 150 5401.79 5401.77 0.02 152 5403.75 5403.72 0.03 160 5404.93 5404.81 0.12 170 5411.78 5411.47 0.31 175 5416.03 5415.82 0.21 180 5420.01 5420.01 0.00 190 5423.35 5423.33 0.02 200 5427.28 5427.28 0.00 219 5437.71 5437.71 0.00 220 5440.71 5440.67 0.04 230 5443.66 5443.56 0.10 231 5444.40 5444.40 0.00 250 5446.48 5446.48 0.00 260 5447.51 5447.50 0.01 270 5458.13 5458.04 0.09 280 5468.33 5467.89 0.44 290 5470.51 5470.48 0.03 291 5472.49 5472.49 0.00 295 5475.28 5474.88 0.40 300 5479.99 5479.93 0.06 301 548530 5484.81 0.49 302 5488.43 5488.43 0.00 304 5491.32 5490.87 0.45 318 5493.81 5493.73 0.08 330 5495.61 5495.23 0.38 8 CROSS WATER SURFACE ELEVATION SECTION WITH FLOODWAY WITHOUT FLOODWAY INCREASE 334 5496.04 5496.03 0.01 340 5500.16 5500.02 0.14 342 5502.13 5501.69 0.44 350 5510.40 5510.38 0.02 351 5513.19 5513.19 0.00 352 5514.42 5514.42 0.00 360 5518.90 5518.90 0.00 370 5534.13 5534.13 0.00 380 5537.70 5537.31 0.39 385 5542.01 5541.85 0.16 389 5554.73 5554.69 0.04 390 5556.74 5556.73 0.01 395 5561.00 5560.98 0.02 398 5566.77 5566.67 0.10 400 5568.84 5568.52 0.32 410 5573.48 5573.35 0.13 420 5578.20 5578.20 0.00 431 5581.48 5581.24 0.24 436 5584.73 5584.23 0.50 440 5593.99 5593.97 0.02 450 5599.19 5599.19 0.00 455 5604.23 5604.21 0.02 460 5612.66 5612.65 0.01 470 5621.42 5621.07 0.35 490 5634.00 5634.00 0.00 500 5635.63 5635.37 0.26 505 5643.97 5643.93 0.04 510 5658.11 5658.11 0.00 520 5658.89 5658.58 0.31 530 5660.04 5660.01 0.03 540 5668.37 5668.23 0.14 550 5690.69 5690.53 0.16 560 5694.62 5694.47 0.15 580 5729.90 5729.90 0.00 590 5735.87 5735.87 0.00 600 5756.91 5756.88 0.03 The more detailed topography used for this study allows for a more accurate delineation of the floodplain. The width of the floodplain increases considerably through the split flow reach between 9w to 11th Street and along Arapahoe Avenue (see description of the split flow later in this section) and in the main channel between University and Marine on the east bank and between Euclid and College. Considerable decreases in the floodplain width occur on the east bank in the vicinity of Pennsylvania Avenue and on the east bank between Pleasant and University. 9 Shallow flood zones are defined along several streets within the study reach including Willowbrook Road, 6th Street, Rose Hill Drive, and 9th Street. The shallow flood zones are caused by the overtopping of the culverts and constricted channel conditions which allow for small discharges to escape the main channel in these areas. The culvert and bridge improvements at Willowbrook Road, Aurora Avenue, and Pleasant Street as well as the inlet and channel improvements at 7th Street do not impact the floodplain other than in the immediate vicinity of the structure because the stream flows at critical depth over the majority of its length and is controlled by the critical water surface elevation. The culvert replacement at Willowbrook Road and the inlet improvements at 7`h Street do not add or remove structures from the 100-year floodplain. The Post-Project analysis shows that the 100-year floodplain narrows downstream of Pleasant Street, where the culvert was enlarged to an 8-ft x 4-ft concrete box culvert. Residences at 709%711 Pleasant Street and 1304, 1312, and 1314 8th Street are removed from the 100-year floodplain. Refer to the Floodplain Work Maps in Appendix 3 for the complete floodplain delineation. Comparison to FHAD The hydraulic analysis shows 100-year water surface elevations both increase and decrease up to 6.4-ft with respect to the water surfaces in the FHAD study (which was not adopted by FEMA). The channel invert elevations also differ by up to 6-ft in some areas between the FHAD and Post- Project analyses. The greatest area of 100-year water surface increase is just downstream of Flagstaff Road. This increase is due to the more accurate topography as well as more accurate modeling methodology used to analyze the culvert crossing. The FHAD study did not use bridge or culvert routines within HEC-2 to analyze crossings. It appears the culverts were analyzed independent of the hydraulic model for capacity. The crossing was modeled in the FHAD HEC-2 with only a cross section at the top of roadway and a reduced flow rate across the roadway. The Post-Project model uses complete bridge and culvert routines within HEC-RAS. Supporting calculations documenting hydraulics at structures were not found in City files. When compared to the FHAD study, the greatest decrease in the 100-year water surface occurs between the upstream face of Aurora Avenue and the downstream face of the private drive bridge at 550 Aurora. The 100-yr water surface decreases by approximately 5.3-ft at this location. This decrease is due to both the improved culvert at Aurora and updated topographic data. The culvert improvements consisted of two new 10-ft x 5-ft box culverts which pass the 10-yr flood event. The Aurora roadway is still overtopped by the 100-year event and a small spill flow proceeds north down 6`h Street. The 100-year water surface elevation also decreases considerably at the downstream tie cross section due to the correction which was made to the SWSE. The FHAD HEC-2 model was converted to HEC-RAS and is included in Appendix 2. Arapahoe Split Flow A split flow occurs in the study reach from near Marine Street to the confluence with Boulder Creek, a stream distance of approximately two-tenths of a mile. In this stream reach, flood flows of approximately 1,185 cfs (100-yr) spill over the east bank of the main channel and become hydraulically disconnected from the main channel in an overbank floodplain. Three lateral weirs on the right bank were set up to model the spill. The hydraulic model was optimized to quantify the spill flow. The flows obtained using the optimized main channel run were hard-wired into the main channel floodway model. 10 The spill flow is conveyed along 91' Street and Arapahoe Avenue and rejoins the Boulder Creek floodplain near 11`n Street. A spill flow model was set up to define this area. As a result of the spill, the flow in the Gregory Canyon Creek main channel is reduced downstream of Marine Street. The spill reach 100-year and 0.5-ft rise floodway water surface elevations are shown in Table 6. Table 6 Post-Project Spill Reach Water Surface Elevations CROSS SECTION WATER SURFACE ELEVATION WITH FLOODWAY WITHOUT FLOODWAY INCREASE 900 5353.28 5353.02 0.26 903 5354.92 5354.51 0.41 905 5360.13 5359.81 0.32 910 5363.30 5362.82 0.48 930 5369.66 5369.31 0.35 950 5377.06 5376.87 0.19 960 5381.67 5381.43 0.24 990 5385.21 5384.92 0.29 9120 5397.76 5397.70 0.06 The FEMA forms supporting this LOMR request are located in Appendix 1, the 500-yr hydrology extrapolation report and hydraulic models are located in Appendix 2, Floodplain Work Maps are included in the Appendix 3, and as-built survey data is included in Appendix 4. 4.0 FLOODPLAIN MANAGEMENT APPLICATIONS The LOMR process is being used to provide a more accurate definition of the flood conditions on Gregory Canyon Creek in the City of Boulder based upon updated topographic information and structural improvements. The City regulates the 100-year floodplain and floodway under the FEMA program. In addition to minimum FEMA requirements, the City regulates the floodway using criteria of a maximum half-foot rise in water surface elevation. The City also regulates the High Hazard Zone (HHZ), a zone where depth and velocity are used to determine 100-year flood hazards to public health and safety. The HHZ determined for this creek will not be submitted to FEMA as a part of this LOMR. The City, with assistance from the Urban Drainage and Flood Control District (UDFCD), maintains the channel and floodplain of Gregory Canyon Creek. The City periodically inspects the channel, and road crossings to ensure they are being properly maintained. 5.0 GENERAL IMPACTS Several road-crossing structures for Gregory Canyon Creek have been improved since the regulatory floodplain was adopted. These include improved culverts at Willowbrook Road, Aurora Avenue, and Pleasant Street and an improved inlet and channel upstream of 7`h Street. In 11 addition, crossings at the private driveway west of Willowbrook Road, the private drive at 550 Aurora Avenue, the private wooden bridge, the patio at 704 Pleasant Street, and the private driveway at 810 Marine Street were not included in the regulatory model but are incorporated into this study. All of these structures except the Aurora Avenue crossing are modeled with some degree of debris blockage. There are several areas where the width of the 100-year floodplain increased and decreased. The largest area of increase is over the spill reach from Marine at 9n' Street to Arapahoe at l lth Street. For a complete depiction of the changes in the floodplain please refer to the Floodplain Work Maps and the annotated FIRM included in the Appendix. 6.0 CONCLUSIONS The information contained in this LOMR is intended to provide updated hydraulic models and floodplain and floodway delineations for Gregory Canyon Creek in the City of Boulder. Its purpose is to update the existing FIRM using more accurate information and updated methodology along with inclusion of a channel improvements and structures omitted from the Effective study. FEMA forms required for the LOMR are presented in Appendix 1, the hydrology report and hydraulic models (on CD) are included in Appendix 2, Appendix 3 contains the Floodplain Work Maps, and Appendix 4 includes as-built construction plans and as-built survey data. 12 7.0 REFERENCES FEMA, 1995. FIRM Flood Insurance Rate Map, Community Panel Numbers 08013C0395F and 08013C0535F. FEMA, 2002. Flood Insurance Study Boulder County, Colorado and Incorporated Areas. Greenhorne and O'Mara, Inc., 1987. Flood Hazard Area Delineation Boulder and Adjacent Counh, Drainageways. Prepared for UDFCD, City of Boulder, and Boulder County. Love & Associates, Inc., 2005. HvdroloD) Report For 500-year Extrapolated Flows for Gregory Canyon Creek, Boulder, Colorado. Prepared for the City of Boulder. USAGE, 2008. HEC-RAS River Analysis System Version 4.0.0, Hydrologic Engineering Center, Davis, California. Robert Sayre, PLS, 2005 & 2008. Land survey data for cross sections and structures. Merrick & Company, 2003.Aerial topographic mapping. Prepared for the City of Boulder. Merrick & Company, 2004. LIDAR Mapping. Prepared for the City of Boulder. 13 APPENDIX I - FEMA DOCUMENTATION 2 - HYDROL0GYAND HYDRA ULICS 3 - FLOODPLAIN WORKMAPS 4 - CERTIFIED SUR VEY APPENDIX I FEMA DOCUMENTATION U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.B No. 1660-0016 OVERVIEW & CONCURRENCE FORM Expires: 1213112010 PAPERWORK BURDEN DISCLOSURE NOTICE Public reporting burden for this form is estimated to average 1 hour per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security. Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016). Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send your completed survey to the above address. A. REQUESTED RESPONSE FROM DHS-FEMA This request is for a (check one): ❑ CLOMR: A letter from DHS-FEMA commenting on whether a proposed project, if built as proposed, would justify a map revision, or proposed hydrology changes (See 44 CFR Ch. 1, Parts 60, 65 & 72). ® LOMR: A letter from DHS-FEMA officially revising the current NFIP map to show the changes to floodplains, regulatory floodway or flood elevations. (See 44 CFR Ch. 1, Parts 60, 65 & 72) B. OVERVIEW 1. The NFIP map panel(s) affected for all impacted communities is (are): Community No. Community Name State Map No. Panel No. Effective Date Ex: 480301 City of Katy TX 480301 0005D 02/08/83 480287 Harris County TX 48201C 0220G 09/28/90 080024 City of Boulder CO 08013C 0395F 06/02/95 080024 City of Boulder CO 08013C 0535F 06/02/95 2. a. Flooding Source: Gregory Canyon Creek b. Types of Flooding: ® Riverine ❑ Coastal ❑ Shallow Flooding (e.g., Zones AO and AH) ❑ Alluvial fan ❑ Lakes ❑ Other (Attach Description) 3. Project Name/Identifier: Gregory Canyon Creek Letter of Map Revision 4. FEMA zone designations affected: A, X (choices: A, AH, AO, Al-A30, A99, AE, AR, V, V1-V30, VE, B, C, D, X) 5. Basis for Request and Type of Revision: a. The basis for this revision request is (check all that apply) ❑ Physical Change ® Improved Methodology/Data ❑ Regulatory Floodway Revision ❑ Base Map Changes ❑ Coastal Analysis ® Hydraulic Analysis ® Hydrologic Analysis ❑ Corrections ❑ Weir-Dam Changes ❑ Levee Certification ❑ Alluvial Fan Analysis ❑ Natural Changes ® New Topographic Data ❑ Other (Attach Description) Note: A photograph and narrative description of the area of concern is not required, but is very helpful during review. b. The area of revision encompasses the following structures (check all that apply) Structures: ❑ Channelization ❑ Levee/Floodwal ® Bridge/Culvert ❑ Dam ❑ Fill ❑ Other (Attach Description) DHS- FEMA Form 81-89,DEC 07 Overview & Concurrence Form MT-2 Form 1 Page 1 of 2 C. REVIEW FEE Has the review fee for the appropriate request category been included? ® Yes Fee amount: $4,800 ❑ No, Attach Explanation Please see the DHS-FEMA Web site at http://www.fema.gov/plan/prevent/fhm/frm fees.shtm for Fee Amounts and Exemptions. D. SIGNATURE All documents submitted in support of this request are correct to the best of my knowledge. I understand that any false statement may be punishable by fine or imprisonment under Title 18 of the United States Code, Section 1001. Name: Christie Coleman Company: City of Boulder Mailing Address: Daytime Telephone No.: (303) 441-4077 Fax No.: P.O Box 791 Boulder, CO 80306 E-Mail Address: colemanc@bouldercolorado.gov Signature of Requester (required): Date: As the community official responsible for floodplain management, I hereby acknowledge that we have received and reviewed this Letter of Map Revision (LOMR) or conditional LOMR request. Based upon the community's review, we find the completed or proposed project meets or is designed to meet all of the community floodplain management requirements, including the requirement that no fill be placed in the regulatory floodway, and that all necessary Federal, State, and local permits have been, or in the case of a conditional LOMR, will be obtained. In addition, we have determined that the land and any existing or proposed structures to be removed from the SFHA are or will be reasonably safe from flooding as defined in 44CFR 65.2(c), and that we have available upon request by FEMA, all analyses and documentation used to make this determination. Community Official's Name and Title: Katie Knapp, DRC Reviewer for Floodplains and Community Name: City of Boulder Wetlands Mailing Address: Daytime Telephone No.: 303-444-3273 Fax No.: P.O BOX 791 Boulder, CO 80306 E-Mail Address: KnappK@bouldercolorado.gov Community Official's Signature (required): Date: CERTIFICATION BY REGISTERED PROFESSIONAL ENGINEER AND/OR LAND SURVEYOR This certification is to be signed and sealed by a licensed land surveyor, registered professional engineer, or architect authorized by law to certify elevation information data, hydrologic and hydraulic analysis, and any other supporting data. All documents submitted in support of this request are correct to the best of my knowledge. All analyses have been performed correctly and in accordance with sound engineering practices. All project works are designed in accordance with sound engineering practices to provide protection from the 1% annual chance flood. If "as-built" conditions data/plan provided, then the structure(s) has been built according to the plans being certified, is in place, and is fully functioning. I understand that any false statement may be punishable by fine or imprisonment under Title 18 of the United States Code, Section 1001. Certifier's Name: David J. Love License No.: 14114 Colorado Expiration Date: Company Name: Love & Associates, Inc. Telephone No.: 303-673-9795 Fax No.: 303-673-9796 Signature: Date: Ensure the forms that are appropriate to your revision request are included in your submittal. Form Name and (Number) Required if ® Riverine Hydrology and Hydraulics Form (Form 2) New or revised discharges or water-surface elevations ® Riverine Structures Form (Form 3) Channel is modified, addition/revision of bridge/culverts, addition/revision of levee/floodwal, addition/revision of dam ❑ Coastal Analysis Form (Form 4) New or revised coastal elevations ❑ Coastal Structures Form (Form 5) Addition/revision of coastal structure Seal (Optional) ❑ Alluvial Fan Flooding Form (Form 6) Flood control measures on alluvial fans DHS- FEMA Form 81-89,DEC 07 Overview & Concurrence Form MT-2 Form 1 Page 2 of 2 r 1 ; Ali, i pt/rj 41, M1$S -lam '°2 _W6 X67 .rfk~, r y~` •Xf i'~}' Downstream Face Private Driveway to Old School (35) TO F I&z I. • r Orr _ ~4 'ice 'rr ne. F~.r (t P Upstream Face Private Driveway to Old School tF,'• ~ Ids #4 :tea=`y Downstream Face Arapahoe Avenue (55) r i 1 j MIN -1J Ml v, s 7 .ili 7 r r. Upstream Face Arapahoe Avenue r ~C T ~1 i ~ t AL i=- r 1 ~w ANkV Downstream Face Alley between Arapahoe Avenue and Marine Street (95) .b- sip:. • . , ~ ~ - y4.~ A Al ffif, it 0,4 • Kr.~ . ~ ~ jT / x.:4,5 f ~ r :-Nz 16- Upstream Face Alley between Arapahoe Avenue and Marine Street NEW- e. .f^ A k 1 _ i r~5r + . Upstream Face Marine Street (125) r e f Ir. 1 I ,f X -ti ~f ff 810 Marine Street (151) 411> lug t • . - ~ ~ ,fir. Cst" Street (165) a c. ~ r '.tom .1 ~~j AOP 10 fR6r r~ J t 01 Ai w 4 r J ~ av i . ilk- Mfr- ~ .v i-- ' ~f - L ~ Est -.ti Downstream Face University Avenue (185) r f ti Upstream Face University Avenue ~Y r 1 r ~YZ 1 a, 4 r Upstream Face Pleasant Street (225) V Ao 10 ti,'i dOW 4 34W AI M OEM AL r _ Upstream Face 7tn Street (265) r a d -era. , ~ • ~ ~i +s,!~~ ~ _ t ~ 1C Y ~ ~tr ~ s Ca1~ 4 I 9f _ at pr,(~~•~ orb 'tom a ' i `v- zwk r Downstream Face Pennsylvania Avenue (285) ,y YSS iii~~~ ~7 F f 10. 1, F r pv. ?r~i y ry'~ vAL AT a~iM r. i.. " ~.~'ar i Fem., ~ f` •A~+f' Upstream Face Pennsylvania Avenue .r d _ all a~ r~ jam- 'yp Y 1 4" P Ilk Downstream Face Private Drive Wood Bridge (303) yyy ; a. 41A" Downstream Face College Avenue (325) f Upstream Face College Avenue K 7 ~ r•~ ~ atia bt , w ~~`~~y;,~ f ~ . i r _ it k . ~ 1~ ~ _.t a'r •l 1 F;. i1~ ~ ~ L •9 i - "yf 7 PIK Ile AL, TF ~ ~ ~f~ - F ,c X11 ley, 4 1 . ` H` F I i: o: 4, 1 i 4 v i r. , rF: T E .f•~ L „q, ' ~ ,f 1~r X,'_ M1IP rib , -I.+ Y .dliti`",,~ 'k . ~.sn• a t •h ` to I ~ ~ r f •,s y'Cj; r~ ~ ~'.~J~,~~~~`t- ra~,7~ SSs h~W ~!M~ , •y, i~~ @y - tire! N,'Y F,'" •r` ;1y~e?:E.',~ I + P f ~+d Sr y +z yM1 ~!i }F ~~7J~'V g lid + ey}~= T,X~ ~i~'d1:~ ~'::b ~'SA'IMR~ i.1.4 W- ~e... t5 tr`~. Downstream Face Euclid Avenue (375) AM& ~ ,,y~ r~ .bdd ..o~~ i a r ~~>tiE~l y~r it f ',~f y "r" ' .rte ♦ ~~~~li.~a~~`~~~ ~ ,rte 47 Downstream Face Euclid Avenue _ :mow= i 07 'qtr, 1 { t~ { r w Downstream Face Aurora Avenue (405) G V VA i'{'Y xe~ { y ri r s'e RX"" Upstream Face Aurora Avenue Fly,"y- t~ r 44, t'. j I 4i, n v is t g .f + Downstream Face Private Drive Upstream of Aurora Avenue (425) i2~ y1rrJ,' w,, , NA ' f ~ r, ( plc ~•4r~!'°t~•TI ~ S ~ Upstream Face Private Drive Upstream of Aurora Avenue ti - .ap z. w r h o .e POW l v`yc. ya•r ".w"`sss~~~..~ - 4{~~~'TM~ii_.~~Y rr~~ .r• N AXN L VIA, - ~ 1, ~ +t r Downstream Face Willowbrook Road (465) 'S Kim. j.J V' 1 ~1?'~17 w r Ve411^~./~y'~r1 f' f i Upstream Face Willowbrook Road ~r a ~ugyt x~~~ 4;~ R T?J, ~~,l ti Q 1 -'•104 1 t IJT/./ V ts'ia 1~r ti* -.'ice y ' rf d'l~~ 9R ~ k.• G. - w.sS `iA7 J~ Ipy ~ t ' w Air . ~ - d kir.' ^lt. ~I" ~:37 ~11~. A l:~-~~~.--- 1 1y!{^IYtl J{ f•1.W~`~J. ~'l .`.t✓rtQ1~~.. .Y..I dr~i l ~Y~i rl~'+' ■7'~r'r 4- Is-o ~"~,j ~ ~1 _ r` 7i f Y t ' ~"L 'F' p l ~'1 ie ~y Looking Downstream NE of Willowbrook Road Cul-de-sac (515) ¢ 7 1. ~ ~ar.. 'e 'IN - 1l11~H~4 A~A S'd. At' ~+K`r ----ri"r ,frt. ~y,. i ,"'•7'~ ri rr rt.ly~•rl h I f LL ? fly! ' I gib` Y - c II%! '7 V. 4 y, T i r Y - yr" Jq. 'ti ' Y+ , ~ ~l~J ~ A! . r. a i ~•~ir', ~a~~ ~1~5, ~,r' f pFF+~'ar~ '~~~'r~ r,• 5 5~4 ~ + I~tff~~ 5'k { F'" tr~a4rf h~~, J4~JJ ~f 1\lfi N~`r,+1 \I:l~ 5 ~6~fllr~J 1~ 51 Private Drive at Old Baseline Road (555) 'law ~ E t Y 1 r c 1 SAL Downstream Face Flagstaff Road (585) T" f Jr j 1 ,4 , 1 1 1 1 ~(3y~' fk ~ 1 tt l i Upstream Face Flagstaff Road U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY O.JLBNo. 1660-0016 RIVERINE HYDROLOGY & HYDRAULICS FORM Expires: 1213112010 PAPERWORK REDUCTION ACT Public reporting burden for this form is estimated to average 3.25 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security, Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016). Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send your completed survey to the above address. Flooding Source: Gregory Canyon Creek Note: Fill out one form for each flooding source studied A. HYDROLOGY 1. Reason for New Hydrologic Analysis (check all that apply) ® Not revised (skip to section B) ® No existing analysis ❑ Improved data ❑ Alternative methodology ❑ Proposed Conditions (CLOMR) ❑ Changed physical condition of watershed 2. Comparison of Representative 1 %-Annual-Chance Discharges Location Drainage Area (Sq. Mi.) Effective/FIS (cfs) Revised (cfs) 3. Methodology for New Hydrologic Analysis (check all that apply) ❑ Statistical Analysis of Gage Records ❑ Precipitation/Runoff Model ❑ Regional Regression Equations ® Other (please attach description) Please enclose all relevant models in digital format, maps, computations (including computation of parameters) and documentation to support the new analysis. 4. Review/Approval of Analysis If your community requires a regional, state, or federal agency to review the hydrologic analysis, please attach evidence of approval/review. 5. Impacts of Sediment Transport on Hydrology Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport) of Form 3. If No, then attach your explanation for why sediment transport was not considered. B. HYDRAULICS 1. Reach to be Revised Description Cross Section Water-Surface Elevations (ft.) Effective Proposed/Revised Downstream Limit at confluence with Boulder Creek 10 N/A 5361.42 Upstream Limit Upstream of Flagstaff Road 600 N/A 5756.88 2. Hydraulic Method/Model Used HEC-RAS 4.0.0 DHS - FEMA Form 81-89A, DEC 07 Riverine Hydrology & Hydraulics Form MT-2 Form 2 Page 1 of 2 B. HYDRAULICS (CONTINUED) 3. Pre-Submittal Review of Hydraulic Models DHS-FEMA has developed two review programs, CHECK-2 and CHECK-RAS, to aid in the review of HEC-2 and HEC-RAS hydraulic models, respectively. These review programs may help verify that the hydraulic estimates and assumptions in the model data are in accordance with NFIP requirements, and that the data are comparable with the assumptions and limitations of HEC-2/HEC-RAS. CHECK-2 and CHECK-RAS identify areas of potential error or concern. These tools do not replace engineering judgment. CHECK-2 and CHECK-RAS can be downloaded from http://www.fema.gov/plan/prevent/fhm/frm soft.shtm. We recommend that you review your HEC-2 and HEC-RAS models with CHECK-2 and CHECK-RAS. Review of your submittal and resolution of valid modeling discrepancies may result in reduced review time. 4. Models Submitted Natural Run Floodway Run Datum Duplicate Effective Model* File Name: Plan Name: File Name: Plan Name: Corrected Effective Model* File Name: Plan Name: File Name: Plan Name: Existing or Pre-Project Conditions Model File Name: Plan Name: File Name: Plan Name: Revised or Post-Project Conditions Model File Name: see attachment Plan Name: File Name: see attachment Plan Name: Other - (attach description) File Name: Plan Name: File Name: Plan Name: * For details, refer to the corresponding section of the instructions. ® Digital Models Submitted? (Required) C. MAPPING REQUIREMENTS A certified topographic map must be submitted showing the following information (where applicable): the boundaries of the effective, existing, and proposed conditions 1%-annual-chance floodplain (for approximate Zone A revisions) or the boundaries of the 1%- and 0.2%-annual-chance floodplains and regulatory floodway (for detailed Zone AE, AO, and AH revisions); location and alignment of all cross sections with stationing control indicated; stream, road, and other alignments (e.g., dams, levees, etc.); current community easements and boundaries; boundaries of the requester's property; certification of a registered professional engineer registered in the subject State; location and description of reference marks; and the referenced vertical datum (NGVD, NAVD, etc.). ® Digital Mapping (GIS/CADD) Data Submitted Note that the boundaries of the existing or proposed conditions floodplains and regulatory floodway to be shown on the revised FIRM and/or FBFM must tie-in with the effective floodplain and regulatory floodway boundaries. Please attach a copy of the effective FIRM and/or FBFM, annotated to show the boundaries of the revised 1 and 0.2%-annual-chance floodplains and regulatory floodway that tie-in with the boundaries of the effective 1%- and 0.2%-annual-chance floodplain and regulatory floodway at the upstream and downstream limits of the area of revision. ® Annotated FIRM and/or FBFM (Required) D. COMMON REGULATORY REQUIREMENTS" 1. For LOMR/CLOMR requests, do Base Flood Elevations (BFEs) increase? ® Yes ❑ No a. For CLOMR requests, if either of the following is true, please submit evidence of compliance with Section 65.12 of the NFIP regulations: The proposed project encroaches upon a regulatory floodway and would result in increases above 0.00 foot. The proposed project encroaches upon a SFHA with or without BFEs established and would result in increases above 1.00 foot. b. For LOMR requests, does this request require property owner notification and acceptance of BFE increases? ® Yes ❑ No If Yes, please attach proof of property owner notification and acceptance (if available). Elements of and examples of property owner notification can be found in the MT-2 Form 2 Instructions. 2. Does the request involve the placement or proposed placement of fill? ❑ Yes ® No If Yes, the community must be able to certify that the area to be removed from the special flood hazard area, to include any structures or proposed structures, meets all of the standards of the local floodplain ordinances, and is reasonably safe from flooding in accordance with the NFIP regulations set forth at 44 CFR 60.3(a)(3), 65.5(a)(4), and 65.6(a)(14). Please see the MT-2 instructions for more information. 3. For LOMR requests, is the regulatory floodway being revised? ® Yes ❑ No If Yes, attach evidence of regulatory floodway revision notification. As per Paragraph 65.7(b)(1) of the NFIP Regulations, notification is required for requests involving revisions to the regulatory floodway. (Not required for revisions to approximate 1%-annual-chance floodplains [studied Zone A designation] unless a regulatory floodway is being added. Elements and examples of regulatory floodway revision notification can be found in the MT-2 Form 2 Instructions.) 4. For LOMR/CLOMR requests, does this request have the potential to impact an endangered species? ❑ Yes ® No If Yes, please submit documentation to the community to show that you have complied with Sections 9 and 10 of the Endangered Species Act (ESA). Section 9 of the ESA prohibits anyone from "taking" or harming an endangered species. If an action might harm an endangered species, a permit is required from U.S. Fish and Wildlife Service or National Marine Fisheries Service under Section 10 of the ESA. For actions authorized, funded, or being carried out by Federal or State agencies, please submit documentation from the agency showing its compliance with Section 7(a)(2) of the ESA. * Not inclusive of all applicable regulatory requirements. For details, see 44 CFR parts 60 and 65. DHS - FEMA Form 81-89A, DEC 07 Riverine Hydrology & Hydraulics Form MT-2 Form 2 Page 2 of 2 Supplemental Information for FEMA Form 2 Gre= orv Canyon Creek MT-2 Form 2 Section A 3. Methodology for new hydrologic analysis. See hydrology memo describing development of 500-year hydrology included in Appendix 2 - Hydrology and Hydraulics. 4. Were the effects of sediment transport on hydrology considered? No. Gregory Canyon Creek is a steep-gradient stream with considerable velocities which average 9.2 ft/s over the study reach. Sediment deposition is not anticipated to be an issue on Gregory Canyon Creek. Section B 4. Hydraulic models submitted in support of this LOMR include: Duplicate Effective Model (None: An Effective Model has not been adopted.) FHAD HEC-2 Model: GREG.dat FHAD Model HEC-RAS Conversion Project file: GREG.prj Geometry file: GREG.g01 Flow data file: GREG.f01 Plan data: GREG.p0I Run data: GREG.r0I Output data: GREG. o0I Revised or Post-Project Conditions Model Project tile: GREGMAIN.prj Geometry file: GREGMAIN.g01 Flow data file: GREGMAIN.f01 Plan data: GREGMAIN.p01 Run data: GREGMAIN.r01 Output data: GREGMAIN.o01 Revised or Post-Project Conditions Floodway Model Project tile: GREGMAINFW.prj Geometry file: GREGMAINFW.g01 Flow data file: GREGMAINFW.f0I Plan data: GREGMAINFW.p0I Run data: GREGMAINFW.r0I Output data: GREGMAINFW.o01 Revised or Post-Project Conditions Spill Model Project file: GREGSP.prj Geometry file: GREGSP.g01 Flow data file: GREGSP101 Plan data: GREGSP.p01 Run data: GREGSP.r01 Output data: GREGSP.o01 Revised or Post-Project Conditions Spill Model Floodway Project file: GREGSPFW.prj Geometry file: GREGSPFW.g01 Flow data file: GREGSPFW.f01 Plan data: GREGSPFW.p01 Run data: GREGSPFW.r01 Output data: GREGSPFW.o01 Section D lb. Does this request require property owner notification and acceptance of BFE increases? Yes, this process will require property owner notification because BFE's have not been previously established for Gregory Canyon Creek and the effective floodplain is a Zone A approximate floodplain. The City of Boulder will hold public meetings to inform citizens of the changes to the floodplain and BFEs. Public process documentation is included in this Appendix. 3. Is the regulatory floodway being revised? There is no effective floodway for Gregory Canyon Creek. A floodway will be established and public notification must be completed. The City of Boulder will hold public meetings to inform citizens of the new floodway. Public process documentation is included in this Appendix. 4. Does this request have the potential to impact an endangered species? No. The construction projects at Pleasant, Aurora, 7'h, and Willowbrook Road were completed in the mid-nineties. Wetland permits, floodplain development permits, and threatened and endangered species clearances were obtained at that time as required by the City. Copies of these permits and clearances are not available in City files as the projects were completed over 10 years ago. U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.BNo. 1660-0016 RIVERINE STRUCTURES FORM Expires: 1213112010 PAPERWORK REDUCTION ACT Public reporting burden for this form is estimated to average 7 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security, Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016). Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send our completed survey to the above address. Flooding Source: Gregory Canyon Creek Note: Fill out one form for each flooding source studied A. GENERAL Complete the appropriate section(s) for each Structure listed below: Channelization ................complete Section B Bridge/Culvert .................complete Section C Dam/Basin .....................complete Section D LeveelFloodwall .............complete Section E Sediment Transport complete Section F (if required) Description Of Structure 1 1. Name of Structure: FriVq-~G D{tve_ lYr6 QQ '5vNlana Opl Type (check one): ❑ Channelization f J Bridge/Culvert ❑ LeveelFloodwall ❑ Dam/Basin Location of Structure: W.. Q 5}. Apr rri «rpmhoe AVQ. Downstream Limit/Cross Section: 30 Upstream Limit/Cross Section: to 2. Name of Structure: At "V%c1F. A%Per"e• OcK tWu4tA* Type (check one): ❑ Channelization M Bridge/Culvert ❑ Levee/Fioodwail ❑ Dam/Basin Location of Structure: PCro.paho-e..llgt?thU.Q. WA.&+ Downstream Limit/Cross Section: 5p Upstream Limit/Cross Section: 3. Name of Structure: A1,4P.Uc.. ver4 ~Wevm Arai tot An p 1gW4-4 3T• Type (check one) ❑ 7Channelizationj Bridge/Culvert ❑ LeveelFloodwall ❑ Dam/Basin Location of Structure: be-+Wg9A krapa-hoe yb i Q.X`1d . S.} Ir S~'• Downstream Limit/Cross Section: 90 Upstream Limit/Cross Section: IOtp NOTE: For more structures, attach additional pages as needed. DHS - FEMA Form 81-89B, DEC 07 Riverine Structures Form MT-2 Form 3 Page 1 of 10 U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.B No. 1660-0016 RIVERINE STRUCTURES FORM Expires: 1213112010 PAPERWORK REDUCTION ACT Public reporting burden for this form is estimated to average 7 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security, Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016). Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send our completed survey to the above address. Flooding Source: Gregory Canyon Creek Note: Fill out one form for each flooding source studied A. GENERAL Complete the appropriate section(s) for each Structure listed below: Channelization ................complete Section B BridgelCulvert .................complete Section C Dam/Basin .....................complete Section D LeveelFloodwall .............complete Section E Sediment Transport ........complete Section F (if required) Description Of Structure y. Name of Structure: Mar-'nc 5vree+ A=X Wvej* Type (check one): ❑ Channelization~" ® Bridge/Culvert ❑ LeveelFloodwall ❑ Dam/Basin Location of Structure: I1A oj-t Pte a uR~'w 4kn ax%j Downstream Limit/Cross Section: 12 b Upstream Limit/Cross Section: 13o 5 Name of Structure: Df ;V" C"1VC r+0.+ 'Lit) K%r1re S+ Type (check one): ❑ Channelization i. 99 Bridge/Culvert ❑ LeveelFloodwall El Dam/Basin Location of Structure: eCL,5+ VT ~6"ChA.. " C CL+ 8 10 MW t}'12. Downstream Limit/Cross Section: 15b Upstream Limit/Cross Section: __115:2 4. T G Name of Structure: A1te4 &nA $'i' 5tree-+ C"Wer` Type (check one) ❑ Channelization ® Bridge/Culvert El LeveelFlood(w,all ❑ Dam/Basin _ Location of Structure: Fmh-% 0.11 wes+ ~ $'~'4o ea,-* ~t ~ gj'L' b n ~1~1+Vers1`~~/ OVII Mott, Downstream Limit/Cross Section: ROD l1 Upstream Limit/Cross Section: ! 4D NOTE: For more structures, attach additional pages as needed. DHS - FEMA Form 81-89B, DEC 07 Riverine Structures Form MT-2 Form 3 Page 1 of 10 U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.B No. 1660-0016 RIVERINE STRUCTURES FORM Expires: 1213112010 PAPERWORK REDUCTION ACT Public reporting burden for this form is estimated to average 7 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right comer of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security, Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016). Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send your completed survey to the above address. Flooding Source: Gregory Canyon Creek Note: Fill out one form for each flooding source studied A. GENERAL Complete the appropriate section(s) for each Structure listed below: Channelization ................complete Section B Bridge/Culvert................. complete Section C Dam/Basin .....................complete Section D Levee/Floodwall .............complete Section E Sediment Transport ........complete Section F (if required) Description Of Structure A (1 y. f Name of Structure: ~ivCr,5 ~ Avenue t, M lvtt'T Type (check one): El Channelillzation ® Bridge/Culvert ❑ Levee/Floodwall ❑ Dam/Basin Location of Structure: U^-vov,51N Av,p. 84t- Downstream Downstream Limit/Cross Section: I ft Upstream Limit/Gross Section: /Qb t Name of Structure: PIRMU n~ S-kte.~ CAA-lut t Type (check one): ❑ Channelization Bridge/Culvert ❑ Levee/Floodwall ❑ Dam/Basin Location of Structure: o; Downstream Limit/Cross Section: 22.0 Upstream Limit/Cross Section: 2 30 .49 Name of Structure: -4,o'4 Pleazoi-Or Cu1uArt Type (check one) ❑ Channeliza-ttion IX Bridge/Culvert ❑ Levee/Floodwall ❑ Dam/Basin Location of Structure: easi 'T 'b: S+j $mcm c* Downstream Limit/Cross Section: 2 So Upstream Limit/Cross Section: „2V0 NOTE: For more structures, attach additional pages as needed. DHS - FEMA Form 81-89B, DEC 07 Riverine Structures Form MT-2 Form 3 Page 1 of 10 U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY OMB No. 1660-0016 RIVERINE STRUCTURES FORM Expires. 1213MO10 PAPERWORK REDUCTION ACT Public reporting burden for this form is estimated to average 7 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security, Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016). Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send your completed survey to the above address. Flooding Source: Gregory Canyon Creek Note: Fill out one form for each flooding source studied A. GENERAL Complete the appropriate section(s) for each Structure listed below: Channelization ................complete Section B Bridge/Culvert .................complete Section C Dam/Basin .....................complete Section D Levee/Floodwall .............complete Section E Sediment Transport .complete Section F (if required) Description Of Structure 10 Name of Structure: ~ - emlw t Type (check one): ❑ Channelization ® Bridge/Culved ❑ Levee/Floodwall ❑ Dam/Basin Location of Structure: 44"r be+v-vef\ 'Fen sihsani a, c,.rJ ?Ln %s*^-V Downstream Limit/Cross Section: ?(00 Upstream Limit/Cross Section: .240 { { Name of Structure: fennSYlu y- i%Gv cwly ri Type (check one): ❑ Channelization 9J Bridge/Culvert ❑ Levee/Floodwall ❑ Dam/Basin Location of Structure: I C nr-$5yJV &n'%q t,~+t~tan ems, '~,rk 5 t . Downstream Limit/Cross Section: t Upstream Limit/Cross Section: Q?90 Name of Structure: Pr-1V0.•kL Dr:jv e„ Type (check one) ❑ Channelization Bridge/Culvert ❑ Levee/Floodwall ❑ Dam/Basin Location of Structure: ~p 14 COUC6P. AV$. Downstream Limit/Cross Section: 30a Upstream Limit/Cross Section: 30 LL NOTE: For more structures, attach additional pages as needed. DHS - FEMA Form 81-89B, DEC 07 Riverine Structures Form MT-2 Form 3 Page 1 of 10 U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.BNo. 1660-0016 RIVERINE STRUCTURES FORM Expires: 1213112010 PAPERWORK REDUCTION ACT Public reporting burden for this form is estimated to average 7 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security, Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016), Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send your completed survey to the above address. Flooding Source: Gregory Canyon Creek Note: Fill out one form for each flooding source studied A. GENERAL Complete the appropriate section(s) for each Structure listed below: Channelization ................complete Section B Bridge/Culvert complete Section C Dam/Basin .....................complete Section D Levee/Floodwall .............complete Section E Sediment Transport ........complete Section F (if required) Description Of Structure i$ Name of Structure: C61114 C utv Type (check one): ❑ Channelizationn Bridge/Culvert El Levee/Floodwall El Dam/Basin Location of Structure: CIA'- 6e+J-%t,pn Lp-u=- ana Downstream Limit/Cross Section: 3 $ Upstream Limit/Cross Section: 3 30 Name of Structure: F. u r-1141 aV end, Q uLl veo-+ Type (check one): ❑ Channelization ®9B~rid~ge~/Culvert El Levee/Floodwall El Dam/Basin Location of Structure: &c.1;6 b r1 (off' ci01A 'Rzee, Downstream Limit/Gross Section: " ~tf Upstream Limit/Cross Section: Sao 8 15 Name of Structure: AWVk-A. 0WU-Q. e.utues-+ Type (check one) ❑ Channelization 20 Bridge/Culvert ❑ Levee/Floodwall ❑ Dam/Basin Location of Structure: kurorq 6{(-}PAn G; 16&,+ 51t. _ 1, Ana ~'~4' 554. Downstream Limit/Cross Section: oo a R•R•l Upstream Limit/Cross Section: q10 NOTE: For more structures, attach additional pages as needed. DHS - FEMA Form 81-89B, DEC 07 Riverine Structures Form MT-2 Form 3 Page 1 of 10 U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.B No. 1660-0016 RIVERINE STRUCTURES FORM Expires. 1213112010 PAPERWORK REDUCTION ACT Public reporting burden for this form is estimated to average 7 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security, Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016). Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send our completed survey to the above address. Flooding Source: Gregory Canyon Creek Note: Fill out one form for each flooding source studied A. GENERAL Complete the appropriate section(s) for each Structure listed below: Channelization ................complete Section B Bridge/Culvert .................complete Section C Dam/Basin .....................complete Section D Levee/Floodwall .............complete Section E Sediment Transport complete Section F (if required) Description Of Structure 1(R Name of Structure: 'iVp4,k. br1V.Q CA&kveri ca 55 o Atkrcra Type (check one): ❑ Channelizaation ® Bridge/Culvert El Levee/Floodwall ❑ Dam/Basin Location of Structure: We 5+ Cri (,-b= 5}. J Sp~~ ~~^t' oro~ Downstream Limit/Cross Section: qzo Upstream Limit/Cross Section: L431 Name of Structure: UWl 16L.4e),~k Roq a t%&1%0-trt Type (check one): ❑ Channelization ® Bridge/Culvert ❑ Levee/Floodwall p ❑ Dam/Basin Location of Structure: T4> urk n. i (o'ff' a ner"t%h*Cr Lets o-J4 , Aw. Downstream Limit/Cross Section: gyp , Upstream Limit/Cross Section: 410 V. IS Name of Structure: r-.Va& Drw e,- q,} WI1101JV'6rw~ ROox-A Type (check one) ❑ Channelization ELBridge/Culvert ❑ L((levee/Floodwall ❑ tDaam/Basin Location of Structure: W4?,&+o~ Co.sc&Ao, Aloe an uy~} 5~ 6T uv%iiowbrclak y~ A. Downstream Limit/Cross Section: y 90 Upstream Limit/Cross Section: 500 NOTE: For more structures, attach additional pages as needed. DHS - FEMA Form 81-89B, DEC 07 Riverine Structures Form MT-2 Form 3 Page 1 of 10 U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.BNo.1660-0016 RIVERINE STRUCTURES FORM Expdres:.1213112010 PAPERWORK REDUCTION ACT Public reporting burden for this form is estimated to average 7 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security, Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016). Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send your completed survey to the above address. Flooding Source: Gregory Canyon Creek Note: Fill out one form for each flooding source studied A. GENERAL Complete the appropriate section(s) for each Structure listed below: Channelization ................complete Section B Bridge/Culvert .................complete Section C Dam/Basin .....................complete Section D Levee/Floodwal[ .............complete Section E Sediment Transport ........complete Section F (if required) Description Of Structure Willow~►,~c1c Roas~ ,f.14 Name of Structure: Pr►vak-DiVt.. 11 Type (check one): ❑ Channelization (Bridge/Culvert El Levee/Floodwal) El Dam/Basin Location of Structure: T%0r-Vh .,QX%A v(1 Ct4%- JAQ -50LC- &r uzi I lrxAzb•e'*L R a Downstream Limit/Cross Section: 510 Upstream Limit/Cross Section: 5 Qa Q~ Z Za Name of Structure: Yf i VM6-D iVe. 04 -405 ~SQ1tY►e. A Type (check one): ❑ Channelization [Bridge/Culvert ❑ Levee/Floodwall ❑ Dam/Basin Location of Structure: V,.)eSkexT 1:Mr~'at$Qti+~. IZAAf Downstream Limit/Cross Section: 55D Upstream Limit/Cross Section: ;54P 0 A'21 Name of Structure: OZctA c 0uet"+ Type (check one) ❑ Channelization Bridge/Culvert ❑ Levee/Floodwall ❑ Dam/Basin Location of Structure: LLSi ~qe~}~ C~a~ Downstream Limit/Cross Section: Jtgty Upstream Limit/Cross Section: S eV b NOTE: For more structures, attach additional pages as needed. DHS - FEMA Form 81-89B, DEC 07 Riverine Structures Form MT-2 Form 3 Page 1 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Private Drive into Old Highland School 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Arapahoe Avenue 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Alley Between Marine and Arapahoe 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Marine Street 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Private Drive at 810 Marine 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Alley and 8th Street 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: University Avenue 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Pleasant 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Private Patio at 704 Pleasant 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: 7t" Street (Rose Hill Drive) 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Pennsylvania Avenue 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Private Drive Wood Bridge at 617 College Street 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: College 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Euclid Avenue 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Aurora Avenue 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Private Drive at 550 Aurora 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Willowbrook Road 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Private Drive at 777 Willowbrook Road 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Private Drive at 711 Willowbrook Road 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Private Drive at 405 Baseline Road 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 B. CHANNELIZATION Flooding Source: Name of Structure: 1. Accessory Structures The channelization includes (check one): ❑ Levees [Attach Section E (Levee/Floodwall)] ❑ Drop structures ❑ Superelevated sections ❑ Transitions in cross sectional geometry ❑ Debris basin/detention basin [Attach Section D (Dam/Basin)] ❑ Energy dissipator ❑ Other (Describe): 2. Drawing Checklist Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Hydraulic Considerations The channel was designed to carry (cfs) and/or the -year flood. The design elevation in the channel is based on (check one): ❑ Subcritical flow ❑ Critical flow ❑ Supercritical flow ❑ Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. ❑ Inlet to channel ❑ Outlet of channel ❑ At Drop Structures ❑ At Transitions ❑ Other locations (specify): 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ❑ No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Gregory Canyon Creek Name of Structure: Flagstaff Road 1. This revision reflects (check one): ® Bridge/culvert not modeled in the FIS ❑ Modified bridge/culvert previously modeled in the FIS ❑ Revised analysis of bridge/culvert previously modeled in the FIS 2. Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3. Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): ® Dimensions (height, width, span, radius, length) ® Erosion Protection ® Shape (culverts only) ® Low Chord Elevations - Upstream and Downstream ® Material ® Top of Road Elevations - Upstream and Downstream ® Beveling or Rounding ® Structure Invert Elevations - Upstream and Downstream ® Wing Wall Angle ® Stream Invert Elevations - Upstream and Downstream ® Skew Angle ® Cross-Section Locations ® Distances Between Cross Sections 4. Sediment Transport Considerations Was sediment transport considered? ❑ Yes ® No If yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. DHS - FEMA Form 81-898, DEC 07 Riverine Structures Form MT-2 Form 3 Page 2 of 10 Supplemental Information for FEMA Form 3 Gre= orv Canyon Creek MT-2 Form 3 Section C 3. Attach plans of structures certified by a registered professional engineer. All field survey work including structure survey was performed by Robert Sayre, PLS. The surveyor's certification page is included on the following page as well as in Appendix 4. All survey data was provided to Belt Collins West as point files (in text format) and was then imported into AutoCAD. The digital points are included in the CAD Work Map file on the layer "survey all". The point files in text format are included in Appendix 4. Structure data sheets were completed for each structure within the study reach and are located in Appendix 4. 4. Was sediment transport considered? No. Sediment transport was not considered at the bridges or culverts within the study reach. Gregory Canyon Creek flows at critical depth over much of its reach. The stream has a steep- gradient with considerable velocities which average 9.2 ft/s over the study reach. Sediment deposition is not anticipated to be an issue on Gregory Canyon Creek. I, Robert M. Sayre, hereby certify that the survey of structures, cross sections, and other points along Gregory Canyon Creek in support of this Letter of Map Revision was performed by me or under my direct supervision and that I am a duly registered land surveyor under the laws of the State of Colorado. Robert M. Sayre Colorado LS No. 11372 Certifier's Name . License Number Owner Robert M. Sayre LS Title Company Name 2885 Maya Place Boulder Colorado 80301-1513 Address City State Zip February 10, 2009 303-447-9039 Signature Date Telephone 11372 F P- 0 rJ `rjgT a sUP F4F CGL~ FEDERAL EMERGENCY MANAGEMENT AGENCY FLOODWAY DATA TABLE COMMUNITY NAME PROJECT NAME/IDENTIFIER Boulder, Colorado Gregory Canyon Creek Main Channel WATER SURFACE ELEVATION CROSS SECTION WITH FLOODWAY WITHOUT FLOODWAY INCREASE 10 5361.42 5361.42 0.00 30 5370.77 5370.77 0.00 40 5372.95 5372.94 0.01 45 5375.61 5375.60 0.01 50 5378.87 5378.87 0.00 60 5381.54 5381.30 0.24 90 5389.13 5388.95 0.18 100 5390.75 5390.52 0.23 110 5394.42 5394.36 0.06 120 5398.62 5398.53 0.09 130 5401.26 5401.19 0.07 150 5401.79 5401.77 0.02 152 5403.75 5403.72 0.03 160 5404.93 5404.81 0.12 170 5411.78 5411.47 0.31 175 5416.03 5415.82 0.21 180 5420.01 5420.01 0.00 190 5423.35 5423.33 0.02 200 5427.28 5427.28 0.00 219 5437.71 5437.71 0.00 220 5440.71 5440.67 0.04 230 5443.66 5443.56 0.10 231 5444.40 5444.40 0.00 250 5446.48 5446.48 0.00 260 5447.51 5447.50 0.01 270 5458.13 5458.04 0.09 280 5468.33 5467.89 0.44 290 5470.51 5470.48 0.03 291 5472.49 5472.49 0.00 295 547528 5474.88 0.40 300 5479.99 5479.93 0.06 301 5485.30 5484.81 0.49 302 5488.43 5488.43 0.00 304 5491.32 5490.87 0.45 318 5493.81 5493.73 0.08 330 5495.61 5495.23 0.38 334 5496.04 5496.03 0.01 340 5500.16 5500.02 0.14 342 5502.13 5501.69 0.44 350 5510.40 5510.38 0.02 351 5513.19 5513.19 0.00 352 5514.42 5514.42 0.00 360 5518.90 5518.90 0.00 370 5534.13 5534.13 0.00 FEDERAL EMERGENCY MANAGEMENT AGENCY FLOODWAY DATA TABLE COMMUNITY NAME PROJECT NAME/IDENTIFIER Boulder, Colorado Gregory Canyon Creek Main Channel WATER SURFACE ELEVATION CROSS SECTION WITH FLOODWAY WITHOUT FLOODWAY INCREASE 380 5537.70 5537.31 0.39 385 554101 5541.85 0.16 389 5554.73 5554.69 0.04 390 5556.74 5556.73 0.01 395 5561.00 5560.98 0.02 398 5566.77 5566.67 0.10 400 5568.84 5568.52 0.32 410 5573.48 5573.35 0.13 420 5578.20 5578.20 0.00 431 5581.48 5581.24 0.24 436 5584.73 5584.23 0.50 440 5593.99 5593.97 0.02 450 5599.19 5599.19 0.00 455 5604.23 5604.21 0.02 460 5612.66 5612.65 0.01 470 5621.42 5621.07 0.35 490 5634.00 5634.00 0.00 500 5635.63 5635.37 0.26 505 5643.97 5643.93 0.04 510 5658.11 5658.11 0.00 520 5658.89 5658.58 0.31 530 5660.04 5660.01 0.03 540 5668.37 5668.23 0.14 550 5690.69 5690.53 0.16 560 5694.62 5694.47 0.15 580 5729.90 5729.90 0.00 590 5735.87 5735.87 0.00 600 5756.91 5756.88 0.03 FEDERAL EMERGENCY MANAGEMENT AGENCY FLOODWAY DATA TABLE COMMUNITY NAME PROJECT NAME/IDENTIFIER Boulder, Colorado Gregory Canyon Creek Spill Reach CROSS SECTION WATER SURFACE ELEVATION WITH FLOODWAY WITHOUT FLOODWAY INCREASE 900 5353.28 5353.02 0.26 903 5354.92 5354.51 0.41 905 5360.13 5359.81 0.32 910 5363.30 5362.82 0.48 930 5369.66 5369.31 0.35 950 5377.06 5376.87 0.19 960 5381.67 5381.43 0.24 990, 5385.21 5384.92 0.29 9120 5397.76 5397.70 0.06 5440 440 1 1 1 1 1 1 1 >1 1 I I 1 J I O I I I Li I I ~ I I I I I I I I I I O I I I I I I I I I I I I I I I I I Lli I I I I I I I 54301 i w i i i > i i i 1; 1 1 1 1 430 0 1 I 1 w o 1 1 1 1 1 1 1 Y I z 1 a 1 u 1 1 1 r 1 1 1 1 1 a 1 a 1 u air w 1Lf) 1 1 ~1 1 1 1 1 W I J I a I 1_LL ! 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ALTO MA ELL ro AVE A y r F o °a s 30 STflEET titer°c~ AVE W W w o A i er and 19 w cc ¢ a B0 N Li fE MAPLETON v Z y u1d GLEN ROCK r p NATIONAL FLOOD INSURANCE PROGRA unshine DRIVE WILLOW n y STflEE R CF a m Gulch GLEN COURT HIGHLAND a AVE Sfl D ~ STflEET LIMIT OF ~ ZON I~ BRCOURT E PINE p DETAILED STUDY STREET X -Pk 9 S1flEET 9 ~ KNOLLWOOD NA m 0 = 11 FIRM DRIVE o N~ 9m ZONE A `_3 y m m~ WPB" ZONE X r ZONE A y MORRISON 119 9TH ST BOU~~~Pp°TAIE'o °TUDY . t N FLOOD INSURANCE RATE MAP SPRUCE ALLEY LIMIT OF psPflV CpyVON M BOULDER COUNTY STREET DETAILED STUCY y a r BOULDER COUNTY, 1INCORPORATED AREAS tDK 080023 BEACON PflV 3RD . ` . & COLORADO AND LIMIT OF pE ~t 1'r e couRl INCORPORATED AREA DETAILED STUDY il;b ,x CANYON M Mg vise ~b J141 BOULEVARD S a F~ a 8 sa i I r ra~ r PANEL 395 OF 595 -e 3 ~n 6 nd i C~NtAY 56 '_~2 a`?x J Paz o alaa (SFF MAP I;VDEX FOR PANFI..S NOT PRINTEI 41 ya ~rt,FA ARAPAHOL€r n CGh n a m a m aaE n T~ I w I- Ul ScY o x P A-' ro~ ~T~~k ~9~ a ~ a A' $ f. h 5416 5410 5406 539J v s t~E ZONE X 4 Footbridge m to t LIMIT OF tCJ : ii ~r e DETAILED STUDY - r 8TF l v » CONTAINS: GRANDVIEW AVE z i0 p y! P ` s ^ ' COMMUNITY NUtr7AEH PANEL SUN! = LL Si ATHENS N ~ UNIVERSITY AVENUE ST ~ EASAN'T STREET HILLSIDE BOULDER COUNTY, DEAN r ate/ ~CQURT 13TH 18TH ROAD Footbridge UNINCORPORATED AREAS 080023 0395 r PLACE ° GSANT STREET STREET STREET ZONE AE BELLA P ci-R I,- pr VISTA N - CITY OF BOULDER LANE HAPGO01 tiIVIA PENNSYLVANIA AVENUE JE 080024 COLORADO - - - - - - - 500 YEAR FLOODPLAIN ZONE A : -ZONE X 31 UNIVERSITY PENNSYLVANIA 100 YEAR FLOODPLAIN GENEVA ;I 36 AVENUE LEGE AVENUE HEIGHTS AVENUL36 E/IU1LlJ~l/~UlU ONE A AVENUE FLOODWAY EUCLIL I v y w w w ZONE X w W LL' v AVENUE a N S ¢ N cc cc N ¢ E EUCLID AVE FLAGSTAFF EU UCLID AVENUE N N 0801300395 0~ l 00 Ip a reg°ry E AURORA00 m EFFECTIVE DATA CLEVELAND F q Creek AVENUE f~ TUNE 2,199 •o AVENUE AURORA I L AVENUE `~2 CIRCLE NE X z m DRIVE r = z = _ = z I = _ _ _ ZONE X r w u ~V/ *.,r Co 01 It O) Z O ~ N f7 V N r ZONE M G~>C'. +~~y. C'4 CHRISTMAS I CASCADE AVENUE r N DENVER ZONE AID U ~ / TREE WILL WLl BOULDER DFP 53 S ~ .{~.rn~ F~.,:'!'PPOCAT,r,~nriP,?11P ~n~•, a 0 U 0 f PLANNING CIVIL ENGINEERING Figure 1 LANDSCAPE ARCHITECTURE ENVIRONMENTAL CONSULTING FIRM MAP Belt Collins West (formerly Love 8 Associates, Inc.) 800 Jefferson Avenue, Suite B GREGORY CREEK Louisville, Colorado 80027-1873 t: 303-573-9795 f:303-873-9795 City of Boulder move@beltcollinswest.com NORTH Feb. 4, 2009 Wed, 15 Apr 2009 - 1:58pm F:\PROJECTS - CURRENT\2003-PROJECTS\0328C\DRAWINGS\FIRM-2-4-09-2.dwg 00'00" i AFitL X63 APPR OXIMATE SCALE IN FEET FLAGSTAFF -mow = F F F F F OA~E GREGORY L,F mo m ~ N m , COLUMBINE 1000 0 1000 GREGORY CANYON-- ROAD MORNINGS F~GSlAF Gregory GLORY DRIVE F T F DRIVF Creek o Q BLUEBELL ~2 C e AVE PRIMROSE ROAD PFF ~ Q BELLEVUE KING G5' ASTER LANE o 4 DRIVE AVENUE LUPINE LANE C ZONE X ti g NATIONAL FLOOD INSURANCE PROGRAM CHAUTAUQUA 51E RA \ZONE A C BRC RESERVOIR pp1VE P ZONE A ROAD ~ I 1 2 LIMIT OF BOULDER COUNTY ZON FLOOD INSURANCE RATE MAP STUDY UNINCORPORATED AREAS 080023 or BOULDER COUNTY, ZONE X Gb~~ Gsz COLORADO AND INCORPORATED AREAS R PANEL 535 OF 595 'srE MAP INDEX FOR PANELS NOT PRINTED) ~~btiN 0~ti~ ti ~I I CONTAINS: V COMMUNI TY NUMBER PANEL SUFFIX CORPORATE LIMITS SCULOEA COUNTY. LANCORPORATFD AREAS 080023 0835 F 'CU: DER, CITY OF 080026 0635 F ROAD I - - - - - - - 500 YEAR FLOODPLAIN 100 YEAR FLOODPLAIN FLOODWAY a v N ZONE X MAP NUMBER 08013CO535 F L O~ i II EFFECTIVE DATE: z I o w ; eµ JUNE 2, 1995 11 12 :D _J o D Ta m -rY; ✓ N o 0 CITY OF BOULDER 080024 Federal Emergency Management Agency O _ a CID U 0 U 0 PLANNING CIVIL ENGINEERING Figure 2 LANDSCAPE ARCHITECTURE ENVIRONMENTAL CONSULTING FIRM MAP Bell Collins West (formerly Love & Associates, Inc.) r 800 Jefferson Avenue, Suite B r GREGORY CREEK Louisville, Colorado 80027-1873 City of Boulder 1:303-673.9795 L 303-673.9796 nlove@beltcollinswest.com NORTH Feb. 4, 2009 PUBLIC PROCESS DOCUMENTATION APPENDIX 2 HYDROLOGY AND HYDRAULICS 500-YR HYDROLOGYMEMO HYDRA ULIC MODELS (on CD) FHAD HEC-2 FHAD HEC-RAS Conversion Post-Project Main Channel Multi profile Post-Project Main Channel Floodway Post-Project Spill Multi profile Post-Project Spill Floodway Associates, inc. wnlcr rrsourcc con- uij nri HUU Jalherson Avenue, SuVlc 13 I.oui CO ,1.:. 80W,-187-5 Phone: 30,5 613 9195 I ax: Sp 613. 9796 September 12, 2005 Mr. Alan Taylor, P.E. Floodplain Coordinator City of Boulder P.O. Box 791 Boulder, CO 80306 REF: 0328A - Gregory Canyon Creek 500-year Hydrology Dear Alan: As requested by the City of Boulder, the firm of Love & Associates, Inc. is pleased to submit this memo discussing the Gregory Canyon Creek hydrology. The 10-, 50-, and 100 year hydrology was taken from the FEMA accepted May 1987 "Boulder and Adjacent Drainageways FHAD Phase "B" prepared by Greenhorne & O'Mara. No 500-year hydrology was available for this stream. The 500-year flow data was extrapolated from the 10-, 50-, and 100-year peak flow values. Two methods were used to estimate the 500-year peak flows on Gregory Canyon Creek. The first method used Excel to establish a logarithmic trendline based on the 10-, 50-, and 100-year values. The values and trendlines are illustrated in Figure 1. The second method utilized a straight line extrapolation using semi-log graphing to estimate the 500- year hydrology. This method was also previously utilized for the Wonderland Creek 500-year hydrology. This method is illustrated in Figure 2. At our meeting on July 7, 2005, we discussed with City staff these two methods for obtaining the 500-year peak flow values. The values from the two methods are shown in Table 1. At that time the City requested that Love & Associates, Inc. perform a comparative analysis with nearby drainageways. We compared 500-year/100-year peak flow ratios for Fourmile, Wonderland, Upper Bear Canyon and Upper Skunk (at Broadway) Creeks to ascertain whether the above methods resulted in reasonable data. Figure 1: Logarithmic Trendline Method for Estimating 500-year Peaks for Gregory Canyon Creek 3500 - y = 617.0 Ln(x) - 746.44 z=1 3000 y = 564. 7Ln(x) - 699.71 Rz = 1 2500 y = 17.72Ln(x) - 706.85 R2 = 0.9978 2000 Boulder Creek - 447.92Ln(x) - 645.46 R2 = 0.9939 University 1500 College Willowbrook Log. (Boulder Creek) 1000 Log. (University) Log. (College) Log. (Willowbrook) 500 0 1 10 100 1000 Figure 2: Straightline Extrapolation Method for Estimating 500-year Peaks for Gregory Canyon Creek GREGOW CA WON CREEK 500-Y R EY,CEECENCE :OB EI 17Y: Pere 1;P;~ 39 ~4 .3 5 49 53 91, q l pD G 5:' AO 20 9•; 5 2 1 Le ai RcLix htrrea! - Years:;Ril I I - i^L4aI ~f'1; r ~IIIII 'Tv~ rR11+1"0=FeseT Erea&~,~c~ i~; I - - I i F) Q1)=',ehar.I0Praal f R' 1'Yor3 f, _ - MAI s ALL.,, - :n ,ow _ I _ I Anr,-jal F&1K FLOW Frequency Ari dysis s I I Staller, Nano, I I - - G I I I _ Sti3~: J11•J: I '~?8rs Cr F,,-o 1 c9 CE 1 .2 5 1 2 5 10 f? 50I 40 !0 160 70 30 50 55 9.9 a ~ 3 .0 1.0`.~Pc:a3w'ar.r>z Pmhatrly Pamam I P I 3 Table 1 Discharge for Gregory Canyon Creek (cfs) Boulder Creek University Ave College Ave Willowbrook Rd 10-yr 673 600 495 400 50- r 1672 1504 1286 1060 100- r 2092 1900 1700 1450 500-yr 3088 2806 2511 2138 Logrithmic Trendline 500-yr 3700 3300 3000 2600 Straightline Extrapolation 10-, 50-, and 100-yr discharges taken from GREG.DOC in Bluebook At our meeting on July 20, 2005 Love & Associates, Inc. presented Table 2 below summarizing the 100-year to 500-year flow ratios for other Boulder area creeks. It was agreed to use the values generated though the straight line extrapolation for the 500-year hydrology for Gregory Canyon Creek as they resulted in ratios more consistent with other drainageways as well as being more conservative. Table 2 Comparison of Ratios 500-year to 100- ear Peak Flows Draina ewa Year of Stud Ratio Range Low High Gregory Logarithmic Trendline 2005 1.48 1.48 Gregory Extrapolation 2005 1.74 1.79 Skunk Creek at Broadway 1999 1.41 1.87 Bear Canyon Creek LOMR 2002 1.66 1.76 Fourmile Restudy 2005 1.92 2.04 Wonderland Restudy 2005 2.19 3.40 * Wonderland values include the spill from Fourmile Canyon Creek. A summary of the discharges used in the re-study of Gregory Canyon Creek (including the 500-year estimated flows) are shown in Table 3. Table 3 Summary of Discharges for Peak Flow for Gregory Canyon Creek cfs Location 10- ear 50-year 100-year 500-year At Confluence with Boulder Creek 673 1672 2092 3700 At University Ave 600 1504 1900 3300 At College Ave 495 1286 1700 3000 At Willowbrook Road 400 1060 1450 2600 If you have any questions, or require additional information, please feel free to contact us. Sincerely, LOVE & ASSOCIATES, INC. Y Rebecca Baker, E.I. Reviewed by I A'~~ David J. L ve, P.E. APPENDIX 3 FLOODPLAIN WORK MAPS ES Np 56 Q o a ° `can.. hJ I, CIRCLE 'DR u r I r '111 I 4 / I ~r1 i I T g , _~$1 H ST j ~ r y 111 III f PARK LN o 1001000 GILBER7 ST I~, ~ I II I 'I ~ ~ ~ ° v 1 I, t E-30 IoaG o II I `L 4+ ED h m C ~ I > Li (7: 1000 1 0-100 6R(~Ci'~R I D / l i / , ~l l~ , ~wr r y I ❑ / w TIGOa T'n I / o ° .000001* dbf J-- ~U,l lll~/ ~~r, 'D E / /VA / I I r u J LEGEND 6TH ST br}, sr I - RESTUDY 0.5-FT RISE FLOODWAY l a REGULATORY 100-YR RESTUDY 100-YR - REGULATORY 500 YR _ V~ ❑ _ 0 ° „ 1 RESTUDY500-YR II Ill~llii~v JiIt 'I, ~~I,I h ❑ I I q ~~a L SHALLOW FLOOD ZONE I' III I Ilf ~ D ~ ~~JJ" BASE FLOOD ELEVATION 5330 oco❑ ❑ L I 'i r. LJ D rrl MAIN CHNL CROSS SECTION SPILL CROSS SECTION l I NTH ST 7TH ST l/I CITY OF BOULDER CITY LIMITS GRAPHIC SCALE PROPERTY Y BOUNDARIES ED STREAM CENTERLINE ( 07 FRRI I~ ORIGINAL SCALR L Inch - 100 ft 00 L1 El ED ED SURVEY CONTROL POINT ra:~ El r-I ID 0 F-1 F-1 F-1 17-1 GROUND CONTROL SURVEY BY: MERRICK & COMPANY 0°p1~ mruen er. ai 80p arz SHEET AERIAL PHOTOGRAPHY BY: MERRICK & COMPANY BLW BELT COLLINS WEST GREGORY CANYON CREEK FLOODPLAIN TOPOGRAPHIC MAPPING BY: MERRICK & COMPANY (f.cr I.. & Asoelelw, 1-? ° CONTOUR INTERVAL: ONE FEET PEE "WORK MAP STA. 63+60 TO STA. 34+00 1 DATE FLOWN: 2003 CITY OF BOULDER COLORADO MUM OJL w~- Z DANE: HORIZONTAL - NAD83, COLORADO STATE *AM (3M asm vm+Nr~~ J PLANE COORD. -NORTH, VERTICAL - NAV088 FEB 2009 (x) moat C3 JAY ST C--] D ❑ d L-i o m, o E--1 0 00 F- 0 ❑ ❑ ❑ 110 El E ❑ ❑ ❑ Ll ❑ ❑ 1 i1 h p ❑ ❑ ❑ aD C~p E, 1000 k-io 10 ZI ET C:E~] D ED ° ~ ❑ o ° Q ❑ ❑ ❑ ❑ I ow 11 ':r E:1 ° ❑ U p ~..J IXq N I I tel. N 1 ao `1 N V ❑ NJ N ❑ ❑ Q r„ 00 EL E~ ED D t ~I x ~ ❑ I It ~11 F7 DAN >L t C1 C1 ❑ ..i ♦ i ❑ " re,'n ,ao 1 n Fri {,~/~~J I ♦ < ❑ ~,00 " N 1000. ~i]f10BgT lJ M h;~ ♦ m r 13 IJJI 1 I o a r 1 o ❑ ❑ ❑ ~41 ❑ 0 ! _ [ ❑ 11ppk] low q"\ El Q i I i' j I ---I4- -I/ ❑ t ❑ ❑ p a ~7 ICS > ❑ ❑ ❑ n ❑ J~-~ % m c C-ip ❑ Y rtn n ` 0 [=J U / X ~~io ❑ ❑ ❑ Cl I 12~ TI 5i , J LEGEND ❑ ~ I i D RESTUDY 0.5-FT RISE FLOODWAY ❑ ❑ f ` 1. ~r l ~ \ ~ ~ I I REGULATORY 100 YR _ - ^ - ` ` \ 1 1 I 111111 1 p RESTUDY 100-YR E] 0° - ❑ ~ ST 1 REGULATORY 500-YR V I u RESTUDY 500-YR 1 ,I ❑ n u'" j SHALLOW FLOOD ZONE D ~ I 1 In 6 B ASE FLOOD ELEVATION 5330 L1 \ ~ I I ❑ ~ ~ 1 j/1 t MAIN CHNL CROSS SECTION 20 v I I o sPlu CROSS SECTION ~ ❑ 'I ❑ ❑ I ~ ~ ~ ~ ~1 Q CITY OF BOULDER CITY LIMITS PROPERTY BOUNDARIES / ❑Q STREAM CENTERLINE 8 4 J D GRAPHIC SCALE 44JJ ~J r f SURVEY CONTROL POINT ioo o ~m gH $T uo ~ - ❑ ti 1 (IN PBRT l ❑ ❑ ❑ ' 3r Q 1 1 OMINAL SCAM I Imh . 100 M On In GROUND CONTROL SURVEY BY: MERRICK & COMPANY DENT lin^ r~vxm~x of &p mn ax9on SHEET AERIAL PHOTOGRAPHY BY: MERRICK & COMPANY BLW BELT COLLINS WEST GREGORY CANYON CREEK FLOODPLAIN TOPOGRAPHIC MAPPING BY: MERRICK & COMPANY ours (Tam.nr taw & As aetw, II ° CONTOUR INTERVAL: ONE FEET PEM ,,,,,,2 DATE FLOWN: 2003 CITY OF BOULDER COLORADO MOM DJL w, , m WORK MAP STA. 34+00 TO STA. 02+00 3 DATUM: HORIZONTAL - NAD83, COLORADO STATE art, w,.. (3M 67"M DN21Y EIIWM PLANE COORO. - NORTH, VERTICAL - NAVD88 FEB 2009 rs (x+)-sm DEAN IL c ° $ o ❑ C1 n to taro ❑ N N C n Q n n < - I ~J ❑ °v o GRAPHIC SCALE C] - m aoo. " 4 o e LEGBdD M c ^ ❑ i ❑ I o E] 11 I r m j l I RESTUDY 0.5-FT RISE FLOODWAY K 1 a (a , rn ° ❑ ` I -oz OMG[NAL SCALE I hxh = 100 ft REGULATORY 100-YR NQ rill q 1000 RESTUDY 100-YR 0!r N to kt ~ REGULATORY 500-YR 4J *a0 * I 1 \ 1 ~ 'l, ° U ~ RESTUDY 500-YR I I I SHALLOW FLOOD ZONE fti~ I ❑ u 0 1 n ❑ ~ ~ \ BASE FLOOD ELEVATION 53 ' 3 0 i` MAIN CHNL CROSS SECTION El ❑ A SPILL CROSS SECTION ' ❑ 1~ ❑ ❑ O\ - V SPLIT FLOW LINE U CITY OF BOULDER CITY LIMITS PROPERTY BOUNDARIES STREAM CENTERUNE ❑ / j J 1~ SURVEY CONTROL POINT ❑ I 0 I I _ z 9 ,l V I I - a 01 J~ `o I C~ o o oC 13 Q' z 13 z El O f 1 (f)d ❑ ~4 ~ a~ ~o ~ 1 o o e ❑ ❑ ~ O En o , LJ El rl 0 ❑ ; ❑ p❑ C~lj 6 ~ ll ri I I ❑ ❑ ❑ Q GQ ❑ ❑ 0 ❑ ❑ ❑ ❑ ° ~ 0 GROUND CONTROL SURVEY BY: MERRICK & COMPANY mom ceFrutuer. ai by as elx9ars SHEET AERIAL PHOTOGRAPHY Sr. MERRICK & COMPANY BLW BELT COLLINS WEST GREGORY CANYON CREEK FLOODPLAIN TOPOGRAPHIC MAPPING BY: MERRICK & COMPANY O1A1k (f-ly L- & AsmeL, ina) CONTOUR INTERVAL: ONE FEET PEM WORK MAP STA. 22+00 TO STA. 0+00 3 DATE FLOWN: 2003 CITY OF BOULDER1 COLORADO a ICKM. OJL w m Z DATUM: HORIZONTAL - NAD83, COLORADO STATE *AM 6'"m w.. ( ' vm+ty mwm~ J PLANE COORO. -NORTH, VERTICAL - NAVO88 FEB 2009 rs (am) nreae APPENDIX 4 CERTIFIED SURVEY I, Robert M. Sayre, hereby certify that the survey of structures, cross sections, and other points along Gregory Canyon Creek in support of this Letter of Map Revision was performed by me or under my direct supervision and that I am a duly registered land surveyor under the laws of the State of Colorado. Robert M. Sayre Colorado LS No. 11372 Certifier's Name . License Number Owner Robert M. Sayre LS Title Company Name 2885 Maya Place Boulder Colorado 80301-1513 Address City State Zip February 10, 2009 303-447-9039 Signature Date Telephone 11372 F P- 0 rJ `rjgT a sUP F4F CGL~ CULVERT DATA DATE APRIL 2005 SURVEYED BY ROBERT M. SA } RLS #11372 YRE RIVER\CREEK GREGORY CREEK, BOULDER. COLORAno CROSSING LOCATION (Field surveyed, April 2005I)" TOP OF RAIL ELEV. TOP OF ROAD ELEV. 76 5;ee 3d j - _3 0.3 TOP OF PIPE ELEV. PIPE TYPE PIPE HEIGHT PIPE WIDE ~ ~ ? ,5 Y.iDi 0- INVERT ELEV IN- y /.z 01 INVERT ELEV OUT- 'K ` 3' Gri d in _vtk e SECTION LOOKING- U.S. Q.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAVD 88) 9d NAME RCF BEARING o ~ NOTE: NOTE IF THERE ARE HEADWALLS AND ~D SHOW ANGLE OF ALL CULVERT PLAN WINGWALLS. DIRECTION OF NORTH DATE APRIL ?S, 2005 BRIDGE DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK gregory creek, boulder, .colorado CROSSING LOCATION /i, nW,4eaC •~Ye ((Field surveyed, April 15 , 2005) TOP OF RAIL ELEV. TOP OF ROAD ELEV. LOW CHORD ELEV. ,5-3 7R, S JQ NO. OF PIERS PIER WIDTH fVo%~/~ c ~rs~C de,brrs ! f } CB~ Y,ah l ,S~~ r.~~ r~rr /tJ D yQri~s W~Sh~d ~~terjm~, OPENING WIDTH (IF MORE THAN ONE SHOW ALL) IN Eck 537Of °5 IN C 8 G f ~~r~Is ~ ~ OUT _ .5' 3 7 7 OUT INVERT ELEV. INVERT ELEV. SECTION LOOKING- U.S. O.S. _ (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NfiS as: 5476.60 NAYD 88) s'E'2 227~~~9 g~aW21NG ~'A,~ F WINGWALL TYPE all n NOTE: SHOW ANGLE OF ALL WINGWALLS.. xr-- BRIDGE PLAN c7 DIREC11ON OF NORTH DATE APRIL 26. 2005 CULVERT DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK GREGORY CREEK. BOULDER, COLORADO CROSSING LOCATION 95- ally 6el~vec-w (Field surveyed, April T5 , 2005I) TOP OF RAIL ELEV. TOP OF ROAD ELEV. 5.3,97, 7 2p TOP OF PIPE ELEV. PIPE TYPE PIPE HEIGHT -3-S zoo, PIPE WIDE x' 0,1 1 f INVERT ELEV IN- Ale le INVERT ELEV OUT- 5`3 3. J' SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAVD 88) Zd I % NAME Frei yC~, ~iy~ BEARING VD, 4J NOTE: NOTE IF THERE ARE HEADWALLS AND SHOW ANGLE OF ALL WINGWALLS. CULVERT PLAN ~ DIRECTION OF NORTH DATE APRIL 2A, 2005 BRIDGE DATA SURVEYED 6Y ROBERT M. SAYRE, RLS #11372 RIVER\CREEK 9re9ory creek, boulder, Colorado CROSSING LOCATION 125; 61'egoey C'rs. ~n <ar »a~ .xf ((Field surveyed, April 15 , 2005) TOP OF RAIL. ELEV. TOP OF ROAD ELEV. LOW CHORD ELEV. ~ 1 5 39-7 NO. OF PIERS 0 CRC PIER WIDTH . ` aJ2fi t1/ 2,05 - 241 OPENING WIDTH (IF MORE THAN ONE SHOW ALL)- IN IN OUT ,,390- f OUT INVERT ELEV. INVERT ELEV. SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NAGS as: 5476.60 NAVD 88) 7/0 MQr'"~ N ~EAR~~O iy WINGWALL TYPE t -s NOTE: SHOW ANGLE OF ALL WINGWALLS. BRIDGE PLAN DIREC110N OF NORTH DATE APRIL 2y, 2005 BRIDGE DATA SURVEYED ROBERT M. SAYRE, RLS #11372 RIVER\CREEK gregory creek, boulder, colorado -VO CROSSING LOCATION - ' ~ h.en1l pea, '9 e rd of fir , f~1 d ((Field surveyed, April f5 , 2005) TOP OF RAIL, ELEV. TOP OF 4WAD ELEV. LOW CHORD ELEV. <7ea r 1;* /a t= S'399 9" NO. OF PIERS 'yo~~ 6uf/eT PIER WIDTH B I1 8 C 6,66 3 #mu7~y6 OPENING WIDTH 'a090 i4 (IF MORE THAN ONE SHOW ALL) IN 6~39e~f_~ IN OUT OUT INVERT ELEV. INVERT ELEV. SEC11ON LOOKING- U.S. 0.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the K,GS as: 5476.60 NAVD 88) and NAME ~ a~p,EtiNG ~9'A~y srC, WINGWALL TYPE NOTE: SHOW ANGLE OF ALL WINGWALLS. BRIDGE PLAN 1- DIRECTION. Of NORTH DATE APRIL 2005 CULVERT DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK GREGORY CREEK, BOULDER. COLORADD / CROSSING LOCATION (Field surveyed, April 20051) „ TOP OF RAIL ELEV. TOP OF ROAD ELEV. „j PIS 21111Z~ 217 TOP OF PIPE ELEV. PIPE TYPE A"~ ht~'~~iJ~ ®~rr Ale ~ i~ le~ I ou~e¢ , PIPE HEIGHT 3g PIPE WIDE INVERT ELEV IN- / IN- INVERT ~ ERT ELEV OUT- T~l~ / % l~frs~© (77J6~i 4 C.-) oewl'Cc; u.7.~lrloru~l. T kd a7~[/' 4LJ//e.°/%Ij~ l liJ r4~1 G SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAVD 88) 0 2 f a74 51r4fhl NAME pr'o~ic,- y~ /Y 39,4"r t o BEARING NOTE: NOTE IF THERE ARE HEADWALLS AND SHOW ANGLE OF ALL CULVERT PLAN WINGWALLS. DIRECTION OF NORTH DATE APRIL 50, 2005 BRIDGE DATA SURVEYED By ROBERT M. SAYRE, RLS #11372 RIVER\CREEK gregory creek, boulder, Colorado CROSSING LOCATION / „G~^eyQr C'r, 4-14,4-f jve psi y ({Field surveyed, April _1 , 2005) TOP OF RAIL ELEV. TOP OF ROAD ELEV. LOW CHORD ELEV. 2 0, fir" NO. OF PIERS pay o PIER WIDTH \ ,~rrd~v = qg, 2 0/" o 65 O jee IP~S i .3,06 -310 OPENING WIDTH (IF MORE THAN ONE SHOW ALL) IN C0~1Cr~fe ~si7~d %0 IN OUT ~~^c1s .~r1~/~~ ..51.10..5 OUT INVERT ELEV. INVERT ELEV. SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the N.GS as: 5476.60 NAVD 88) 87~ Ave NAME' rV ~J~ 8 y-y ~~p,E2tNG 'Ai,L WINGWALL TYPE NOTE: SHOW ANGLE OF ALL WINGWALLS. o -K. BRIDGE PLAN DIRECTION OF NORTH DATE APRIL 302 2005 EDGE DATA SURVEYED 6Y ROBERT M. SAYRE, RLS #11372 RIVER\CREEK gregory creek, boulder, Colorado 225, „9~►~-~`~~'v C`: liyidar"''/a'~~¢n,~/, CROSSING LOCATION ((Field surveyed, April 46 , 2005) TOP OF RAIL. ELEV. TOP OF ROAD ELEV. LOW CHORD ELEV. NO. OF PIERS PIER WIDTH c o G OPENING WIDTH a - (IF MORE THAN ONE SHOW ALL IN _ 11ohee ~4f MC Ca rrle., d ✓ f / / i v f~~~ fs fig" RC PI born- ! IN OUT - .5 ~ .5' arras ~r-•afi9; 55.x'' la"rV.1 OUT INVERT ELEV. INVERT ELEV. 6"rz; Al y SEC110N LOOKING- U.S. D.SS. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NAS as: 5476.60 NAVD 88) 4,91 g~pRltaG ~'ry WINGWALL TYPE NOTE: SHOW ANGLE OF ALL WINGWALLS. BRIDGE PLAN DIRECTION OF NORTH DATE APRIL 3C}. 2005 CULVERT DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK GREGORY CREEK. BOULDER, COLORADO 1? 55 CROSSING LOCATION new (Field surveyed, April ~9 2005;);: TOP OF RAIL ELEV. TOP OF A8AV ELEV. TOP OF PIPE ELEV. PIPE TYPE drek L. a pt f o 'P `pa B } 9 PIPE HEIGHT .r' PIPE WIDE ~ - Q ffof INVERT ELEV IN- JYJ I Of INVERT EL.EV OUT- -T*38r 6A %s.9 SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City/of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAVD 88) v w' r~tyc ry Cr. 7- . NAME BEARING ~2 a 4 NOTE: NOTE IF THERE ARE HEADWALLS AND SHOW ANGLE OF ALL CULVERT PLAN WINGWALLS. DIRECTION OF NORTH DATE APRIL 96, 2005 CULVERT DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK GREGORY CREEK BOULDER, b5 CROSSING LOCATION ' r,6p9,0 12,e, 0`~°~er ] fh ~c~• (Field surveyed, April /6 , 200511'0 TOP OF RAIL ELEV. TOP OF ROAD ELEV. 5 x.53. 2. 't/-- ,S~e ~o rn77~ 9.7cp gg2, TOP OF PIPE ELEV. PIPE TYPE RC r' J75, 5'' PIPE HEIGHT PIPE WIDE INVERT ELEV IN- ¢5l-~O 0- INVERT ELEV OUT- SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAYD 88) 17 X6.3 NAME 42440--X ~T BEARING N 0;r' I-' v k-. cn NOTE: NOTE IF THERE v ARE HEADWALLS AND SHOW ANGLE OF ALL CULVERT PLAN a-- WINGWALLS. DIRECTION OF NORTH DATE APRIL 1~. 2005 CULVERT DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK GREGORY CREEK, BOULDER. CULORAn_ CROSSING LOCATION 295; 7 ~~a-ze, ..er f a°h ns ~f hio (Field surveyed, April 16 , 2005)> TOP OF RAIL ELEV. TOP OF ROAD ELEV. ~ry+~/ ~~7, 96 - TOP OF PIPE ELEV. se a~sa ~c3ai~9 s i PIPE TYPE arch OfP Ala d 'y IX 07P L'/"/,p ~ `19` ~ PIPE HEIGHT 310) PIPE WIDE fwd 0- ~:32 INVERT ELEV IN- INVERT ELEV OUT- 51", 7a SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAVD 88) NAME (xre a'r• C,- BEARING C~k NOTE: NOTE IF THERE % ARE HEADWALLS AND SHOW ANGLE OF ALL CULVERT PLAN WINGWALLS. DIRECTION OF NORTH DATE APRIL 2B, 2005 BRIDGE DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK gregory creek, boulder, colorado CRp$SING LOCATION Ar'i;ak dr~~e ,~rj~t. Cot/eq-rre S~' ((Field surveyed, April 19 , 2005) TOP OF RAIL ELEV. TOP OF ROAD ELEV. LOW CHORD ELEV, N I!' erhd 07' OT oaj c h ,fridq& der:,lc skip-c.s VW-5 Soe X sect -4t03 NO. OF PIERS j ~rcJ =G~c ~s br'i~„yc fs I/ PIER WIDTH 8 xraod 3g; ' ~ ~z,C sv;Jc a f~~ ~virl s Nr✓~ ~ r~tl,E~ 5`~ . ~ r7~~ e sic .Y-,secfs .30i 0.,T43B P*.vf; W aaa~ (2 x 3)~ y- f `ate ~s r . fi~~, e ~~~r~ qdd OPENING WIDTH e (IF MORE THAN ONE SHOW ALL.) IN 5 ,lie 5 IN OUT OUT INVERT ELEV. C'~.~f'LOW,W;vT ELEV. SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NAGS as: 5476.60 NAVD 88) JJ1, r6 ry 52 An ,BEp,~WNG WINGWALL TYPE NOTE: SHOW ANGLE OF ALL WINGWALLS. c~ RIDGE PLAN DIRECTION OF NORTH DATE APRIL 30, 2005 $RI GE DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK gregory creek, boulder, colorado CROSSING LOCATION -9rej wy r mss, vr~~ G'c, ((Field surveyed, April _19-, 2005) TOP OF RAIL ELEV, TOP OF ROAD ELEV. LOW CHORD ELEV, V-y3; /7 V Z C'a Ye ~ NO. OF PIERS S7~dn d PIER WIDTH ¢1~ If a - 1C.12 peo . OPENING WIDTH (IF MORE THAN ONE SHOW ALL) INS. 23 IN OUT 548-5-, 27 OUT INVERT ELEV, INVERT ELEV. SECTION LOOKING- U.S. (60 .S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by theNAS as: 5476.60 NAVD 88) o /~0 c' Yg C ~~Ait1NG Ilk ~ WINGWALL TYPE NOTE: SHOW ANGLE OF ALL WINGWALLS, BRIDGE PLAN DIRECTION OF NORM _ DATE APRIL 26, 2005 CULVERT DATA SURVEYED 8Y ROBERT M. SAYRE, RLS #11372 RIVER\CREEK GREGORY CREEK, BOULDER. COLORAno n ~~r 'r!~ ye V L r. CROSSING LOCATION 375-; 6Peggw (Field surveyed, April 21 , 2005)) TOP OF RAIL. ELEV. TOP OF ROAD ELEV. TOP OF PIPE ELEV. ~ y PIPE TYPE PIPE HEIGHT . ra 4' 04 PIPE WIDE INVERT ELEV IN- 2 915'0 INVERT ELEV OUT- 55 2 r 6 SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAVD 88) Jere 9 0 6i NAME G're or Cr. 7~ BEARING _ 29 dam- T NOTE: NOTE IF THERE ARE HEADWALLS AND SHOW ANGLE OF ALL ULVERT PLAN WINGWALLS. DIRECTION OF NORTH APRIL 04( 2005 DATE BRIDGE DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER`CREEK gregory creek, boulder, colorado ~~5 r &hcrele i'ox e- 'Z'erl /scCROSSING LOCATION L f' 4pe 40 ((Field surveyed, Apr ilZaL9- , 2005) TOP OF RAIL. ELEV. Ata°rm Ave. TOP OF ROAD ELEV. LOW CHORD ELEV. ,'.x'72, 916 NO. OF PIERS I le PIER WIDTH /40o' 0 3 Lend ~ hot oneosv,-ed CN7c 1-6 le OPENIN WIDTH (IF MORE THAN NE SHOW ALL) IN C6~ 62 IN G nc u~» .beret ~y c•~-Q>n l~~s OUT 4 ~ OUT INVERT ELEV. 4/jov-'/'~a/ w i M h ea i"y fl. "V INVERT ELEV. SEC11ON LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NJGS as: 5476.60 NAVD 88) //0 9 AYE NA11i fay SEARING 9'Ai,~, WINGWALL TYPE NOTE: SHOW ANGLE OF ALL WINGWALLS. -4 a BRIDGE PLAN DIRECTION OF NORTH DATE APRIL-24. 2005 CULVERT DATA SURVEYED BY ROBERT M. SAYRE, RLS_ #11372 RIVER\CREEK GREGORY CREEK, ftQULDER, COLQRADO CROSSING LOCATION harerv (&e ohe CAJ (Field surveyed, April _/92005,1), TOP OF RAIL ELEV. TOP OF ROAD ELEV. 72e TOP OF PIPE ELEV. -34 /?eF PIPE TYPE ~~7'`er.36"CYP PIPE HEIGHTS PIPE WIDE INVERT ELEV IN- INVERT ELEV OUT-- SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAVD 88) ,Sew q~SD 1aoir~fs 1112 7X 1163 f~¢ 9 ca NAME BEARING ~ a. ~ b NOTE: NOTE IF THERE ARE HEADWALLS AND SHOW ANGLE OF ALL CULVERT PLAN WINGWALLS. DIRECTION OF NORTH DATE APRIL ,2(, 2005 BRIDGE DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK gregory creek, boulder, colorado if 425 . f i~i~d ~ df"lYC ar .gLe CROSSING LOCATION ((Field surveyed, April 2005) TOP OF RAIL. ELEV.` TOP OF ROAD ELEV. LOW CHORD ELEV, .5,5 -9o 5 55 74 .A? 47._, j 1 71L1 J~611q CDll~r Gifl'.~itk'~ .SIsIG' 10- dh ove dle k r 71 2 Co crrle 724 dG G III V f J I_q o y NO. OF PIERS p'e'en 6 d"I PIER WIDTH 'Gi fal:~ eat/ ed4"rele. o ? OPENING WIDTH t ~~'n~ o-1 irio~ ` (IF MORE THAN ONE SHOW ALL) glow cr~~k IN l~yfG"lf~ P 6~ 1~1/) p7ew.7`_ Z IN OUT ~re~ner~fs sort-tee ~ce.s CG'S Sf 71. / OUT INVERT ELEV. INVERT ELEV. 44 -lqf-avel d 'eeek, SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 C(The /same stainless steel rod is listed by the N,GS as: 5476.60 NAVD 88)- 0 VL it6~- p,, Oee. f C6l7cre ~e walls, Npt'AE 5' l W /Va w,nj t~ol~s BEp,E21NG ~'Ai,~, WMNGWALL. TYPE NOTE: SHOW ANGLE OF ALL WINGWALLS. BRIDGE PLAN DIRECTION OF NORTH DATE APRIL 26 , 2005 BRIDGE DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK gregory creek, boulder, colorado CROSSING LOCATION 4651 (ire f" 131r, &V41dei r;11,04JI1.0- - All ((Field surveyed, April 20_, 2005) TOP OF RAIL ELEV, TOP OF ROAD ELEV. LOW CHORD ELEV. NO. OF PIERS r ' 1:5*, 2 /e n PIER WIDTH. 9 a'a7 ~n•ny OPENING WIDTH (IF MORE THAN ONE SHOW ALL) 6L4 IN IN OUT -56 63, 3,3 OUT INVERT ELEV. INVERT ELEV. SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NJGS as: 5476.60 NAVD 88) / 62 See 'wke, Al k 13 Y`~47 3b13-- ~E p,4ZW~C' 9'Aiy WINGWALL TYPE NOTE: SHOW ANGLE OF ALL WINGWALLS. BRIDGE PLAN DIRECTION OF NORTH DATE APRIL 2005 BRIDGE DATA SURVEYED SY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK regory creek, boulder, .colorado CROSSING LOCATION A1;116< X"w ((Field surveyed, April 2,0_, 2005) TOP OF RAIL. ELEV. TOP OF ROAD ELEV. LOW CHORD ELEV. leaf ,ire ~ vg's ee/ Z' 6eanv jipae'd NO. OF PIERS w`f~~ii d~ PIER WIDTH /D ° 3 ~r e )7,04 'A ev } OPENING WIDTH a~'/a~ar~' Pa ys (IF MORE THAN ONE SHOW ALL) W 1N 5 6 z 56 IN OUT _ 56 2 4. 4- OUT INVERT ELEV. INVERT ELEV. SECl10N LOOKING- U.S. D.5. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NAS as: 5476.60 NAVD 88) 94 a ~f Seu 471610 ~ ve, be; ?fir V A Al BEp~~LING ~Af~L WINGWAL. TYPE CP NOTE: SHOW ANGLE OF ALL WINGWALLS. a BRIDGE PLAN DIRECTION OF NORTH DATE APRIL e'6, 2 005 CULVERT DATA SURVEYED BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK GREGORY CREEK, BOULDER, QQLORA00 CROSSING LOCATION f iV cam!! ~e -soC' l~el~,~~raa. (Field surveyed, April 19 , 20054): TOP OF RAIL ELEV. 44 MIAI TOP OF -POW ELEV. ~ TOP OF PIPE ELEV. PIPE TYPE MCP, oar PIPE HEIGHT PIPE WIDE INVERT T ELEV IN- / ) r INVERT ELEV OUT-56-.si-7, f7 SECTION LOOKING- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAVD 88) -Yee a !sn %D33 - ~9-d 4 NAME G raLd y Cr. BEARING a. Jk- caa sa a NOTE: NOTE IF THERE ARE HEADWALLS AND SHOW ANGLE OF ALL CULVERT PLAN WINGWALLS. DIRECTION OF NORTH DATE APRIL 2~. 2005 CULVERT DATA SURVEYED BY ROBERT M. SAYRE, RLS 1.11372 RIVER\CREEK GREGORY CREEK BOULDER, COLORADO s CROSSING LOCATION , 6rc orv 6r. 64) '.Qd l.4g.sclive X (Field surveyed, April 16 , 2005! TOP OF RAIL ELEV. TOP OF ROAD ELEV. 2.3 ~awn~ see/ D TOP OF PIPE ELEV. .3I ~ f f ~fo;a e 1,,,lMe PIPE E 616 6m hl) ew) PIPE HEIGHT PIPE WIDE ~ INVERT EL.EV IN- ~7 / 145 /e i V1 1e t4 t7t-,c &_6 lwa6l' ;,o,'xs m.vde, INVERT EL.EV OUT- :diq3. ~ic.~~J msssiss~j ~Ie glfns~~ sow' i4p~raxda~ Estee e f' 9' ~e oa-I%< f ,6,w,.r` a,~,r~~ar~d/ f Ge 96a r~5 C~EjLE) 3CTION LOOKING- U.S. (CIR Note: Basis of elevations: City of Boulder. Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the N6S as: 5476.60 l/ NAVD 88) ~eE 4f~Q' po~n~5 ~ 101 ~ s~d~ g?_ NAME 6rec~~,T BEARING A/ . c~ q$4 c,' NOTE: NOTE IF THERE %T1 At- ARE HEADWALLS AND SHOW ANGLE -OF ALL -CULVERT PLAN WINGWAU.S. DIRECTION OF NORTH CULVERT DATA SURVEYE DATE D APRIL 2,r, 2005 BY ROBERT M. SAYRE, RLS #11372 RIVER\CREEK GREGORY CREEK, BOULDER. COLORADO CROSSING LOCATION 585 Ar/O 14i~p V LIP rnau/X 6ow o (Field surveyed, April 15 200$) TOP OF RAIL ELEV. TOP OF ROAD ELEV. 5'7~9, 2 TOP OF PIPE ELEV. /XkE7 CAP 37 7 07¢ /e~~~i PIPE TYPE GUJ'L ~T.` s~ena o/c d~Gr~/n In cof PIPE HEIGHT G'P s?~dh~ ~rcls PIPE WIDE y INVERT ELEV IN- `718, 2 3 k / n,:/ -0 1ele"- Aside INVERT ELEV OUT- 5 7/ 7, 8 SECTION LOOKING-- U.S. D.S. (CIRCLE ONE) Note: Basis of elevations: City of.Boulder Benchmark L-440: 5476.62 (The same stainless steel rod is listed by the NGS as: 5476.60 NAVD 88) 1 0 • ,SeG also ydin7~9 /14.5--/Oa7 11 v NAME 6?ej,m,r BEARING n NOTE. NOTE IF THERE ARE HEADWALLS AND SHOW ANGLE OF ALL -CULVERT PLAN WINGWALLS. DIRECTION OF NORTH file: ///F l/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 1,1242663.777,3061036.819,5673.259,FPC 2,1242722.146,3060973.430,5669.834,X 3,1242696.902,3058596.559,5734.542,MAG 4,1246723.899,3060514.712,5420.012,MAG 5,1242941.290,3059583.496,5688.022,FBC 6,1244281.590,3059737.806,5573.073,X 7,1246355.529,3059599.291,5447.100,#5 N, 6TH@PLSNT 8,1245231.513,3059604.175,5514.210,FIP 12,1247952.982,3060627.933,5371.400,CP N ON CONCWALK 13,1248029.510,3060642.316,5369.831,CP N, BRIDGE EL? 14,1247914.738,3060529.551,5371.390,CP N, PARKINGLOT 17,1247709.920,3060574.124,5378.220,CP, N SIDE, X55 18,1247635.174,3060475.933,5380.300,CP, S SIDE, X55 19,1247433.329,3060494.852,5388.990,CP, ALLEY, W X95 20,1247448.262,3060551.486,5388.130,CP, ALLEY, E X95 21,1247292.040,3060820.108,5399.280,CP 9TH & MARINE 23,1247151.254,3060432.228,5400.580,CP 8TH & MARINE 24,1246989.632,3060472.967,5407.250,CP, 8TH AT ALLEY 25,1246965.901,3060401.578,5409.170,CP, ALLEY X 150 26,1247017.304,3060501.374,5406.200,CP, E ALLEY,X150 27,1246723.994,3060514.692,5419.990,CP, E, UNIV,X185 28,1246723.403,3060353.886,5420.800,CP, W, UNIV,X185 29,1246349.148,3060200.502,5440.410,CP,X225,E,PLESNT 30,1246371.996,3060080.404,5443.080,CP, 7TH@PLEASANT 31,1246205.548,3060051.422,5451.200,CP N OF SCHOOL 32,1245941.011,3059917.383,5467.230,CP, PENN, X-285 34,1245931.547,3059763.574,5469.220,CP, PENN @ DEAN 35,1245889.248,3059595.267,5478.900,CP, PENN @ 6TH 36,1245572.609,3059786.931,5491.460,CP, X325, COLLEG 37,1245550.329,3059604.285,5500.610,CP, 6TH@COLLEGE 38,1245231.513,3059604.175,5514.210,CP, 6TH @, GENEVA 39,1244905.920,3059608.559,5533.630,CP, 6TH @ EUCLID 40,1244281.611,3059737.783,5573.070,CP, 6TH @ AURORA 41,1244154.541,3059772.214,5580.160,CP, 6TH, S OF 40 42,1243761.147,3059444.800,5610.800,CP, X465, WILOWB 43,1243264.585,3059444.057,5650.110,CP, WILLOWBROOK 44,1243226.607,3059287.386,5655.950,CP, CUL, WILOWBR 45,1243488.738,3059444.726,5632.530,CP, X-ING 490 46,1242929.614,3059208.073,5689.380,CP, ASPH, BASELN 47,1242918.496,3058928.961,5691.487,REMOVED CP,PORZA 48,1242696.936,3058596.564,5734.570,CP PARK ENTRANCE 49,1242852.109,3058677.734,5733.150,CP GREGORY DRIVE file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (1 of 18) [4/15/2009 2:09:36 PM] file: /ll F l/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 50,1242914.931,3058936.848,5696.880,NEW CP 4-18-05 51,1242929.607,3059208.027,5689.490,MISC PT 101,1247912.354,3060584.141,5500.000,B40 102,1247913.005,3060622.303,5500.000,E40 103,1247799.788,3060553.526,5500.000,B45 104,1247797.098,3060613.457,5500.000,E45 105,1247700.556,3060475.458,5500.000,B50 106,1247739.428,3060622.723,5500.000,E50 107,1247638.096,3060519.855,5500.000,B60 108,1247668.186,3060638.711,5500.000,E60 109,1246415.000,3060186.015,5500.000,B219 110,1246414.539,3060244.000,5500.000,E219 111,1246379.371,3060140.651,5500.000,B220 112,1246378.449,3060256.625,5500.000,E220 113,1246324.316,3060075.295,5500.000,B230 114,1246324.316,3060220.101,5500.000,PI230 115,1246306.391,3060249.576,5500.000,E230 116,1245909.316,3059735.951,5500.000,B290 117,1245909.316,3059960.849,5500.000,E290 118,1245848.749,3059796.863,5500.000,B295 119,1245799.176,3059917.921,5500.000,E295 120,1245672.240,3059781.870,5500.000,B299 121,1245650.490,3059835.120,5500.000,E299 122,1245784.713,3059708.100,5500.000,B300 123,1245709.991,3059977.023,5500.000,E300 124,1245681.362,3059691.166,5500.000,B301 125,1245681.362,3059733.975,5500.000,PI301 126,1245600.504,3059777.037,5500.000,PI 301 127,1245600.504,3059908.248,5500.000,E 301 128,1245650.395,3059699.654,5500.000,B 303 129,1245650.395,3059733.975,5500.000,PI 303 130,1245585.020,3059770.147,5500.000,PI 303 131,1245585.020,3059907.595,5500.000,E 303 132,1245532.072,3059672.845,5500.000,B 330 133,1245533.062,3059832.620,5500.000,PI 330 134,1245505.007,3059861.119,5500.000,E 330 135,1245398.941,3059635.118,5500.000,B 340 136,1245398.941,3059941.970,5500.000,E 340 137,1245221.279,3059652.830,5500.000,B 350 138,1245223.746,3059865.660,5500.000,E 350 139,1245159.233,3059633.079,5500.000,B 352 140,1245152.525,3059883.251,5500.000,E 352 141,1245066.680,3059571.470,5500.000,B 360 file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (2 of 18) [4/15/2009 2:09:36 PM] file: ///F l/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 142,1245063.110,3059713.390,5500.000,E 360 143,1244924.391,3059629.786,5500.000,B 370 144,1244923.883,3059735.226,5500.000,E 370 145,1243325.081,3059209.013,5500.000,B 510 146,1243193.307,3059349.381,5500.000,E 510 147,1243304.206,3059180.939,5500.000,B 520 148,1243178.304,3059314.126,5500.000,E 520 149,1243236.994,3059119.483,5500.000,B 530 150,1243130.011,3059244.183,5500.000,E 530 151,1244759.460,30673 89.830,5376.240,FBC 152,1246739.944,3060552.725,5419.560,43 @, 8TH & UNIV 153,1242916.940,3060437.630,5673.135,K-440, GEOF'S EL 154,1245725.106,3060085.099,5476.620,L-440 9 SCHOOL 155,1256252.880,3074249.570,5289.640,FSP 201,1247017.292,3060501.294,5406.172,fs ck 23-26 202,1247059.771,3060496.712,5403.960,+ in conc 203,1247292.001,3060820.006,5399.212,bs ck 23-21 204,1247242.002,3060588.057,5397.323,fs ck 23-22 205,1247248.502,3060590.138,5390.236,ie out 206,1247214.067,3060588.302,5397.411,cl rd Marine 207,1247183.267,3060585.648,5393.479,ie in 208,1247151.242,3060432.237,5400.551,bs ck 202-23 209,1247154.174,3060574.146,5394.367,ie out cbc 210,1247108.980,3060543.340,5396.424,ie in cbc 211,1247067.033,3060502.755,5401.822,top rcmp out 212,1247065.562,3060504.421,5401.159,ie out 151n crop 213,1247151.240,3060432.235,5400.542,bs ck 202-23 214,1247017.227,3060501.224,5406.179,bs ck 25-26 215,1246989.703,3060472.652,5407.236,fs ck 25-24 216,1246976.200,3060473.682,5401.234,ie fl sewer mh 217,1246939.993,3060398.356,5404.968,ie in rcmp 218,1247017.237,3060501.242,5406.178,bs ck 25-26 219,1247433.327,3060494.844,5388.968,bs ck 20-19 220,1247409.127,3060558.753,5383.649,ie in crop 221,1247450.410,3060558.140,5383.135,ie out crop 222,1247438.579,3060557.483,5387.454,c1 rd alley 223,1247409.128,3060559.247,5386.654,top cmp in 224,1247450.078,3060558.049,5386.726,top cmp out 225,1247433.310,3060494.786,5388.971,bs ck 20-19 226,1247635.169,3060475.926,5380.308,bs ck 17-18 227,1247658.101,3060577.420,5374.501,fl rcbc in 228,1247722.179,3060583.928,5372.721,fl rcbc out 229,1247689.726,3060579.240,5378.857,c1 rd Arapahoe file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (3 of 18) [4/15/2009 2:09:36 PM] file: ///F l/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 230,1247638.197,3060519.898,5381.587,gmd 107 231,1247640.203,3060528.654,5381.873,gmd 232,1247640.509,3060530.464,5380.3 88,grnd 233,1247645.540,3060551.519,5379.906,gmd 234,1247647.501,3060558.534,5379.760,grnd 235,1247650.996,3060569.847,5379.027,top 236,1247651.437,3060573.052,5375.876,toe 237,1247651.603,3060574.405,5375.603,edge bottom 23 8,1247652.430,3060575.908,5375.572,fl 239,1247652.854,3060577.711,5375.512,edge bottom 240,1247653.255,3060580.050,5375.844,toe 241,1247654.017,3060583.125,5378.413,top 242,1247657.025,3060595.569,5379.454,gmd 243,1247660.459,3060609.965,5380.172,gmd 244,1247664.059,3060624.975,5380.360,gmd 245,1247668.180,3060638.779,5380.328,gmd 108 246,1247700.651,3060475.450,5380.490,grnd 105 247,1247703.567,3060485.068,5379.657,gmd 248,1247704.828,3060490.112,5379.110,gmd 249,1247707.516,3060499.769,5379.113,grnd 250,1247708.540,3060505.634,5379.143,grnd 251,1247715.828,3060534.002,5379.355,gmd 252,1247719.307,3060546.238,5380.082,grnd 253,1247721.270,3060553.809,5379.266,gmd 254,1247723.264,3060561.164,5379.296,gmd 255,1247724.901,3060570.917,5377.618,top 256,1247726.194,3060573.093,5376.693,gb 257,1247726.504,3060574.322,5375.378,gb 258,1247727.692,3060578.750,5374.202,gb 259,1247728.407,3060581.013,5372.584,toe 260,1247728.839,3060582.694,5372.356,fl 261,1247729.147,3060585.050,5372.514,toe 262,1247730.280,3060588.951,5374.288,bottom conc wall 263,1247730.563,3060589.535,5376.968,top conc wall 264,1247732.066,3060595.777,5377.044,gmd 265,1247734.289,3060604.367,5377.072,gmd 266,1247736.257,3060612.709,5377.222,gmd 267,1247738.982,3060621.755,5377.079,grnd 106 268,1247799.790,3060553.475,5376.786,cp 103 269,1247709.956,3060574.115,5378.197,bs ck 268-17 270,1247914.809,3060529.685,5371.364,fs ck 268-14 271,1247806.998,3060556.140,5376.494,cp 103a 272,1247709.956,3060574.117,5378.194,bs ck 271-17 file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (4 of 18) [4/15/2009 2:09:36 PM] file: ///F l/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 273,1247799.771,3060553.747,5376.507,grnd 103 274,1247798.993,3060566.194,5375.690,grnd 275,1247799.083,3060572.973,5375.348,grnd 276,1247798.958,3060576.950,5374.829,top 277,1247798.774,3060581.023,5372.887,gb 278,1247798.888,3060585.762,5370.984,gb 279,1247798.382,3060587.723,5369.698,toe 280,1247798.209,3060589.387,5369.490,fl 281,1247798.624,3060592.029,5369.999,toe 282,1247798.052,3060599.784,5374.547,top 283,1247797.788,3060604.373,5374.750,grnd 284,1247797.238,3060613.234,5374.590,grnd 104 285,1247709.918,3060574.136,5378.184,bs ck 271-17 286,1247952.947,3060627.844,5371.376,bs ck 14-12 287,1247912.648,3060578.137,5372.107,grnd at wall 288,1247912.623,3060581.706,5371.760,grnd 289,1247912.695,3060584.317,5370.928,grnd 101 290,1247912.632,3060586.033,5370.482,top 291,1247912.572,3060592.415,5367.578,gb 292,1247912.594,3060595.057,5365.957,gb 293,1247912.677,3060597.259,5364.549,gb 294,1247912.748,3060599.761,5364.080,fl 295,1247912.636,3060601.439,5364.314,toe 296,1247912.729,3060604.625,5365.927,gb 297,1247912.736,3060607.562,5367.737,gb 298,1247913.317,3060611.753,5371.344,grnd 299,1247913.179,3060617.043,5372.095,grnd 300,1247912.768,3060622.413,5372.253,grnd 102 301,1247919.462,3060600.588,5363.574,ie in 3.42in rcp 302,1247942.646,3060600.314,5362.306,ie out rcp 303,1247931.681,3060597.427,5370.761,c1 driveway 304,1247952.942,3060627.835,5371.383,bs ck 14-12 305,1246723.993,3060514.693,5419.942,bs ck 28-27 306,1246689.734,3060386.886,5414.102,fl in conc cul 307,1246690.022,3060386.999,5419.117,c1 top inside 308,1246788.963,3060392.669,5410.574,fl out conc cul 309,1246788.706,3060392.368,5415.259,c1 top inside 310,1246738.700,3060389.072,5420.649,c1 rd University 311,1246723.992,3060514.673,5419.952,bs ck 28-27 312,1246371.994,3060080.411,5443.057,bs ck 29-30 313,1246349.153,3060200.477,5440.401,bs ck 30-29 314,1246324.335,3060075.318,5446.097,conc walk 113 315,1246323.732,3060082.748,5446.305,grnd file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (5 of 18) [4/15/2009 2:09:36 PM] file: ///F l/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 316,1246323.650,3060099.490,5445.124,gmd 317,1246323.786,3060123.625,5444.122,gmd 318,1246349.160,3060200.458,5440.405,bs ck 30-29 319,1246371.987,3060080.456,5443.058,bs ck 29-30 320,1246324.584,3060137.771,5442.791,gmd 321,1246324.317,3060158.439,5440.824,gmd 322,1246324.990,3060172.162,5440.310,gmd 323,1246324.820,3060181.941,5438.978,top 324,1246323.801,3060183.103,543 5.604,toe 325,1246322.002,3060186.559,5434.908,fl 326,1246323.791,3060190.339,543 5.217,toe 327,1246324.129,3060191.970,5439.762,top 328,1246323.578,3060198.235,5441.065,gmd 329,1246324.053,3060219.886,544 1.01 l,gmd 114 330,1246366.655,3060279.032,5438.410,cp 113 331,1246349.148,3060200.501,5440.389,bs ck 330-29 332,1246322.505,3060225.947,5441.306,gmd bot wall 333,1246319.975,3060227.053,5444.466,gmd 334,1246315.183,3060236.023,5445.842,gmd 335,1246306.558,3060249.546,5446.586,gmd 115 336,1246378.458,3060262.842,5437.858,gmd 337,1246379.097,3060246.672,5442.412,gmd 338,1246378.429,3060233.557,5441.641,gmd 339,1246371.991,3060080.436,5443.047,bs ck 29-30 340,1246378.234,3060226.432,5440.274,gmd 341,1246378.244,3060225.899,5438.831,gmd 342,1246379.854,3060219.021,543 8.178,gmd 343,1246379.444,3060213.537,543 7.608,gmd 344,1246380.735,3060208.553,5437.793,top 345,1246379.647,3060205.826,5433.707,toe 346,1246379.715,3060203.191,543 3.772,fl 347,1246379.915,3060198.221,5433.825,toe 348,1246380.089,3060197.699,5437.760,top 349,1246378.420,3060185.038,543 8.679,gmd 350,1246379.207,3060173.811,5439.218,gmd 351,1246379.698,3060157.951,5440.235,gmd 352,1246379.206,3060140.871,5441.301,gmd 111 353,1246411.663,3060196.676,5437.041,cp 113b 354,1246349.149,3060200.502,5440.378,bs ck 353-29 355,1246414.800,3060244.168,5436.914, deck 110 356,1246414.851,3060237.029,543 6.627,gmd 357,1246414.924,3060230.087,543 6.91 l,gmd 358,1246415.417,3060225.019,5434.746,gb file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (6 of 18) [4/15/2009 2:09:36 PM] file: ///F l/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 359,1246414.285,3060217.454,5434.178,gb ret wall 360,1246414.053,3060217.135,5432.613,toe 361,1246414.163,3060215.481,5431.943,gb 362,1246414.031,3060211.955,5431.585,fl 363,1246413.973,3060209.932,5431.821,toe 364,1246414.178,3060209.595,5434.262,top ret wall 365,1246414.943,3060185.618,5438.148,grnd 109 366,1246378.253,3060202.923,5433.646,fl out 367,1246378.852,3060206.773,5434.284,fl out 368,1246349.149,3060200.502,5440.378,bs ck 353-29 369,1246371.989,3060080.436,5443.051,bs ck 29-30 370,1246335.465,3060190.490,5434.940,ie in be 371,1246338.703,3060245.484,5435.767,fl cl stonnmh 372,1246357.476,3060198.081,5440.462,c1 rd Pleasant 373,1246372.017,3060080.407,5443.088,bs ck 31-30 374,1246372.032,3060080.408,5443.081,bs ck 31-30 375,1246200.117,3060113.698,5446.329,c1 conc irr out 376,1246226.054,3060081.597,5446.322,c1 conc irr out 377,1246276.992,3060036.326,5446.719,c1 conc irr in 378,1246246.922,3060059.025,5451.008,c1 rd 7th irr 379,1246061.761,3060034.030,5451.357,ie in rcp 380,1246258.063,3060118.699,5438.620,ie out cmp 381,1246259.289,3060120.633,5438.574,ie out cmp flare 382,1246229.888,3060084.403,5438.860,ie out rcp 383,1246232.157,3060085.929,5439.054,ie in cmp 384,1246249.111,3060099.160,5442.179,grnd cmp ang pt 385,1246372.027,3060080.406,5443.075,bs ck 31-30 386,1245941.008,3059917.321,5467.237,bs ck 34-32 387,1245909.266,3059735.887,5470.198,asph 116 388,1245909.721,3059758.665,5469.716,edge of asph 389,1245909.236,3059777.714,5469.678,gmd 390,1245909.436,3059783.418,5470.919,rocks 391,1245909.275,3059788.547,5469.483,grnd 392,1245907.615,3059805.784,5469.294,gmd 393,1245907.701,3059817.128,5470.866,grnd 394,1245907.520,3059827.977,5471.094,grnd 395,1245909.639,3059837.516,5471.716,gmd 396,1245908.875,3059844.205,5470.427,grnd 397,1245908.396,3059856.291,5469.986,grnd 398,1245910.407,3059873.588,5468.940,gmd 399,1245909.757,3059881.522,5468.304,top 400,1245941.005,3059917.321,5467.228,bs ck 34-32 401,1245931.551,3059763.630,5469.216,bs ck 32-34 file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (7 of 18) [4/15/2009 2:09:36 PM] file: /ll F l/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 402,1245908.749,3059886.149,5467.099,gb 403,1245907.107,3059891.781,5465.247,toe 404,1245906.067,3059893.966,5464.742,fl 405,1245909.184,3059902.075,5464.883,toe 406,1245910.348,3059909.385,5468.623,gb 407,1245909.620,3059915.461,5468.905,top 408,1245907.923,3059933.537,5468.532,grnd 409,1245909.367,3059960.900,5468.051,grnd 117 410,1245913.665,3059903.048,5464.321,ie in crop 411,1245930.030,3059914.945,5467.883,c1 rd Pennsylvan 412,1245943.973,3059928.243,5461.700,ie out crop 413,1245931.550,3059763.630,5469.307,bs ck 32-34 414,1245797.951,3059934.826,5476.590,cp 119 415,1245941.005,3059917.384,5467.233,bs ck 414-32 416,1245799.384,3059917.920,5477.503,grnd top 119 417,1245804.464,3059905.198,5474.611,grnd toe 119 418,1245807.061,3059898.798,5474.661,grnd 419,1245808.852,3059894.034,5475.482,grnd 420,1245810.604,3059889.743,5475.71 l,grnd 421,1245812.624,3059884.543,5474.497,grnd 422,1245818.560,3059870.363,5474.334,top 423,1245824.662,3059856.612,5471.517,toe 424,1245826.906,3059850.637,5470.940,gb 425,1245828.465,3059847.626,5470.260,fl 426,1245829.718,3059844.384,5470.450,gb 427,1245831.606,3059838.638,5471.768,gb 428,1245941.005,3059917.384,5467.234,bs ck 414-32 429,1245754.642,3059930.558,5480.080,cp 121 430,1245797.946,3059934.826,5476.586,bs ck 429-414 431,1245710.173,3059976.845,5481.523,gmd 123 432,1245723.435,3059927.786,5481.581,grnd 433,1245729.983,3059905.504,5481.636,gmd 434,1245736.633,3059882.683,5482.754,grnd 435,1245733.918,3059865.163,5483.179,cpl23 436,1245754.648,3059930.578,5480.059,bs ck 435-429 437,1245743.554,3059859.707,5482.106,gmd fnc 43 8,1245 745.424,3059850.418,5481.3 86,top 439,1245750.184,3059832.656,5476.173,toe 440,1245750.686,3059831.507,5475.510,bottom 441,1245750.422,3059830.146,5475.102,fl 442,1245751.212,3059827.851,5475.776,bottom 443,1245751.771,3059824.832,5476.531,gb 444,1245754.741,3059817.991,5475.922,gb file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (8 of 18) [4/15/2009 2:09:36 PM] file: ///F l/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 445,1245756.418,3059812.484,5476.143,gb 446,1245757.274,3059808.444,5476.796,gb 447,1245757.958,3059800.725,5476.946,gb 448,1245762.480,3059792.660,5479.586,top 449,1245767.234,3059770.723,5478.415,grnd 450,1245784.513,3059706.532,5477.726,grnd house 451,1245941.007,3059917.325,5467.248,bs ck 34-32 452,1245849.064,3059796.265,5474.363,grnd house 453,1245941.012,3059917.324,5467.242,bs ck 34-32 454,1245550.339,3059604.362,5500.577,bs ck 36-37 455,1245533.234,3059753.591,5486.229,fl in 456,1245583.603,3059753.661,5485.275,fl out 457,1245557.591,3059755.425,5493.167,c1 rd College 458,1245585.159,3059907.816,5490.356,grnd 131 459,1245585.985,3059869.855,5490.861,grnd 460,1245585.589,3059832.276,5491.024,asph cl drive 461,1245584.899,3059797.691,5490.975,grnd 462,1245584.588,3059780.929,5491.683,edge conc 463,1245585.035,3059770.143,5491.519,conc 130 464,1245599.860,3059762.073,5489.212,wood bridge 465,1245616.470,3059753.693,5486.919,wood bridge 466,1245626.196,3059747.439,5486.205,conc 467,1245633.720,3059743.625,5485.551,grnd 468,1245642.727,3059738.570,5484.651,grnd 469,1245650.746,3059733.762,5484.250,grnd 129 470,1245550.339,3059604.358,5500.581,bs ck 36-37 471,1245684.647,3059710.206,5483.696,cp 124 472,1245572.607,3059786.933,5491.420,bs ck 471-36 473,1245680.921,3059734.589,5482.182,grnd 125 474,1245681.576,3059726.535,5483.300,grnd 475,1245681.268,3059714.457,5483.616,grnd 476,1245681.340,3059698.875,5483.877,grnd 477,1245681.036,3059692.033,5484.316,grnd stone wall 478,1245681.054,3059690.930,5486.309,grnd 124 479,1245650.256,3059726.386,5484.602,grnd 480,1245650.257,3059722.034,5486.052,grnd 481,1245650.400,3059721.161,5487.590,conc 482,1245650.028,3059709.903,5487.651,grnd 483,1245650.187,3059699.769,5488.158,grnd 128 484,1245572.607,3059786.933,5491.419,bs ck 471-36 485,1245550.338,3059604.358,5500.586,bs ck 36-37 486,1245582.791,3059767.928,5491.779,conc bow 487,1245585.337,3059766.500,5491.252,top stone wall file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (9 of 18) [4/15/2009 2:09:36 PM] file: ///F //PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 488,1245587.647,3059765.576,5486.402,bot stone wall 489,1245592.686,3059762.641,5485.469,edge h2o 490,1245598.334,3059759.499,5484.779,fl 491,1245607.899,3059755.308,5484.397,edge h2o 492,1245610.305,3059754.117,5485.310,bot stone wall 493,1245616.553,3059751.059,5486.777,top stone wall 494,1245625.039,3059746.781,5486.084,gmd 495,1245550.338,3059604.357,5500.576,bs ck 36-37 496,1245641.194,3059770.100,5485.136,cp 125 497,1245572.614,3059786.930,5491.433,bs ck 496-36 498,1245695.081,3059795.835,5482.603,cp 120 499,1245641.197,3059770.102,5485.119,bs ck 498-496 500,1245572.615,3059786.930,5491.438,bs ck 496-36 501,1245683.246,3059796.205,5482.656,cp 120a 502,1245641.195,3059770.100,5485.133,bs ck 501-496 503,1245650.485,3059835.044,5485.064,gmd 121 504,1245652.950,3059829.790,5484.421,top 505,1245654.426,3059826.011,5483.981,gb 506,1245655.251,3059821.290,5483.144,gb 507,1245656.683,3059819.624,5480.552,gb 508,1245659.120,3059813.578,5479.390,edge ofh2o 509,1245659.769,3059810.476,5479.122,fl 510,1245660.032,3059806.960,5479.332,edge ofh2o 511,1245662.878,3059804.675,5479.817,gmd 512,1245664.303,3059802.214,5479.484,edge of h2o 513,1245664.958,3059800.783,5479.077,fl 514,1245666.684,3059796.198,5479.746,edge ofh2o 515,1245668.348,3059791.916,5481.910,gb 516,1245670.288,3059786.228,5483.385,top 517,1245672.174,3059781.768,5483.350,gmd 120 518,1245641.195,3059770.101,5485.134,bs ck 501-496 519,1245572.614,3059786.930,5491.437,bs ck 496-36 520,1245659.864,3059745.435,5483.670,conc 521,1245644.992,3059753.515,5484.886,conc 522,1245629.219,3059761.887,5486.188,edge of conc 523,1245626.190,3059763.935,5486.454,top 524,1245622.397,3059765.117,5483.048,toe 525,1245617.448,3059767.533,5483.221,fl 526,1245612.703,3059770.433,5483.249,edge h2o 527,1245609.448,3059772.537,5483.830,gmd 528,1245606.740,3059774.385,5483.917,edge h2o 529,1245604.551,3059775.506,5483.990,fl 530,1245601.623,3059776.808,5483.832,edge h2o file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (10 of 18) [4/15/2009 2:09:36 PM] file: ///F //PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 531,1245600.457,3059777.441,5484.753,grnd 532,1245600.441,3059784.951,5485.766,grnd 533,1245601.783,3059793.755,5485.028,grnd 534,1245600.445,3059802.848,5487.723,grnd 535,1245550.338,3059604.358,5500.579,bs ck 36-37 536,1245591.329,3059848.461,5490.560,cp 127 537,1245572.606,3059786.923,5491.426,bs ck 536-36 538,1245600.294,3059818.511,5488.648,grnd 539,1245600.608,3059827.543,5490.967,grnd 540,1245600.919,3059834.133,5491.901,grnd 541,1245600.860,3059837.065,5490.630,asph 542,1245600.545,3059849.713,5490.129,asph 543,1245600.813,3059864.944,5490.140,grnd 544,1245600.313,3059876.275,5490.455,grnd 545,1245600.263,3059892.175,5490.653,grnd 546,1245600.431,3059908.062,5490.809,grnd 127 547,1245572.605,3059786.923,5491.428,bs ck 536-36 548,1245550.337,3059604.357,5500.575,bs ck 36-37 549,1245585.087,3059767.864,5491.403,cor wood bridge 550,1245590.440,3059778.537,5491.464,cor wood bridge 551,1245602.308,3059759.432,5488.659,edge wood bridge 552,1245607.863,3059770.111,5488.783,edge wood bridge 553,1245620.182,3059750.349,5486.457,cor wood bridge 554,1245625.614,3059761.024,5486.563,cor wood bridge 555,1245584.928,3059780.939,5492.610,eoc 556,1245584.998,3059792.329,5492.198,grnd 557,1245584.818,3059797.933,5491.844,grnd 558,1245585.138,3059807.204,5492.133,grnd 559,1245585.035,3059822.618,5491.223,eoa 560,1245585.374,3059840.043,5490.834,eoa 561,1245585.173,3059855.570,5490.864,grnd 562,1245585.495,3059873.370,5490.769,grnd 563,1245585.384,3059890.954,5490.894,grnd 564,1245585.162,3059907.815,5490.799,grnd 131 565,1245550.337,3059604.358,5500.586,bs ck 36-37 566,1245532.135,3059672.991,5497.012,eow 132 567,1245532.688,3059682.145,5496.372,grnd 568,1245531.947,3059687.440,5495.030,grnd 569,1245550.335,3059604.358,5500.580,bs ck 36-37 570,1245550.339,3059604.368,5500.574,bs ck 36-37 571,1245532.464,3059708.269,5494.122,eoc 572,1245532.651,3059741.050,5493.657,top 573,1245532.830,3059747.131,5491.748,gb file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (11 of 18) [4/15/2009 2:09:36 PM] file: ///F //PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 574,1245532.734,3059749.939,5491.941,gb 575,1245532.579,3059750.195,5485.841,toe 576,1245532.508,3059753.650,5485.948,fl 577,1245532.729,3059757.068,5486.163,toe 578,1245532.598,3059757.819,5492.099,top 579,1245532.650,3059759.953,5492.546,gmd 580,1245532.781,3059769.287,5493.929,gmd 581,1245532.527,3059780.320,5494.071,gmd 582,1245532.773,3059785.089,5493.860,gmd 583,1245533.219,3059799.852,5493.676,gmd 584,1245533.607,3059810.728,5493.177,grnd 585,1245532.818,3059823.569,5492.834,conc 586,1245533.070,3059831.863,5492.827,conc 587,1245532.745,3059832.978,5493.026,gmd 133 588,1245521.011,3059844.566,5493.707,gmd 589,1245504.949,3059861.176,5496.589,gmd 134 590,1245550.341,3059604.353,5500.576,bs ck 36-37 591,1245577.494,3059932.610,5489.611,cp 131 592,1245572.609,3059786.926,5491.473,bs ck 591-36 593,1245399.699,3059935.130,5503.747,cp 136 594,1245577.502,3059932.611,5489.649,bs ck 593-591 595,1245399.000,3059941.446,5503.928,gmd 136 596,1245398.915,3059927.862,5503.522,conc 597,1245398.971,3059904.549,5502.01 l,conc 598,1245398.986,3059875.568,5499.773,eoc 599,1245398.907,3059863.509,5499.133,gmd 600,1245398.969,3059857.888,5499.823,gmd 601,1245398.921,3059847.694,5499.412,gmd 602,1245401.392,3059798.296,5498.954,cp 136a 603,1245399.699,3059935.127,5503.780,bs ck 602-593 604,1245399.181,3059806.954,5498.899,gmd 605,1245399.079,3059773.046,5499.279,gmd 606,1245404.587,3059762.917,5499.202,cp 136b 607,1245401.393,3059798.285,5498.968,bs ck 606-602 608,1245398.857,3059758.506,5499.693,gmd 609,1245398.897,3059748.240,5498.898,gmd 610,1245399.067,3059744.828,5498.502,top 611,1245399.178,3059743.026,5498.084,gb 612,1245398.875,3059741.061,5493.610,toe 613,1245398.594,3059738.224,5493.136,fl 614,1245399.046,3059736.057,5493.256,toe 615,1245398.825,3059732.607,5494.377,gb 616,1245398.977,3059727.853,5494.047,gb file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (12 of 18) [4/15/2009 2:09:36 PM] file: ///F //PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 617,1245398.957,3059723.885,5496.802,top 618,1245398.507,3059710.720,5497.785,eoc 619,1245398.335,3059696.485,5497.731,conc 620,1245398.617,3059677.487,5498.040,grnd 621,1245403.263,3059609.876,5506.776,cp 135 622,1245572.598,3059786.846,5491.466,bs ck 37-36 623,1245403.360,3059609.817,5506.742,cp 135 624,1245550.333,3059604.284,5500.536,bs ck 623-37 625,1245401.332,3059632.919,5503.517, stone 626,1245399.071,3059634.885,5503.508,grnd 135 627,1245412.064,3059637.188,5503.449,conc dr 628,1245412.863,3059652.840,5500.327,conc dr 629,1245413.654,3059668.017,5497.603,conc dr 630,1245416.764,3059682.282,5497.376,conc dr 631,1245550.333,3059604.285,5500.540,bs ck 632,1245550.258,3059604.288,5500.583,bs ck 38-37 633,1245220.738,3059652.896,5514.711,grnd 137 634,1245221.011,3059665.720,5514.898,grnd 635,1245550.257,3059604.286,5500.553,bs ck 38-37 636,1245239.563,3059692.682,5512.109,cp 137 637,1245231.513,3059604.183,5514.161,bs ck 636-38 638,1245221.423,3059687.651,5504.459,h2o wall 639,1245221.841,3059691.912,5503.396,fl 640,1245221.729,3059695.085,5504.289,edge h2o 641,1245222.341,3059700.638,5504.781,toe 642,1245221.783,3059713.938,5511.510,top 643,1245221.571,3059722.924,5511.536,grnd 644,1245231.511,3059604.163,5514.157,bs ck 636-38 645,1245222.363,3059736.231,5511.583,grnd 646,1245232.703,3059841.384,5509.741,cp 138 647,1245239.564,3059692.657,5512.045,bs ck 646-636 648,1245222.778,3059761.020,5511.213,grnd 649,1245222.980,3059789.682,5511.353,grnd 650,1245223.374,3059835.648,5510.3 82,grnd 651,1245223.500,3059855.905,5510.852,grnd 652,1245223.046,3059858.075,5512.098,grnd 653,1245224.126,3059865.096,5515.436,grnd 138 654,1245239.565,3059692.677,5512.054,bs ck 646-636 655,1245150.302,3059837.949,5518.074,cp 140 656,1245232.688,3059841.383,5509.701,bs ck 655-646 657,1245152.688,3059883.749,5521.793,bs ck 655-646 658,1245157.663,3059722.804,5517.266,cp 140a 659,1245150.301,3059837.952,5518.047,bs ck 658-655 file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (13 of 18) [4/15/2009 2:09:36 PM] file: ///F //PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 660,1245153.559,3059869.541,5519.356,grnd 661,1245153.475,3059857.201,5518.998,asph 662,1245153.634,3059847.906,5518.814,grnd 663,1245153.987,3059838.776,5518.655,sewer mh 664,1245154.03 8,3059836.268,5517.830,grnd 665,1245154.249,3059831.358,5516.925,grnd 666,1245154.684,3059816.910,5514.079,grnd 667,1245155.270,3059789.729,5513.686,grnd 668,1245155.548,3059760.398,5515.739,gmd 669,1245156.251,3059740.462,5516.760,grnd 670,1245156.821,3059719.906,5517.287,grnd 671,1245156.761,3059711.643,5516.867,grnd 672,1245157.211,3059703.057,5511.953,gb 673,1245157.487,3059696.181,5507.330,toe h2o 674,1245157.603,3059692.562,5507.377,fl 675,1245157.993,3059687.750,5507.554,toe h2o 676,1245157.989,3059684.526,5509.927,gb 677,1245158.288,3059675.260,5510.316,gb 678,1245159.045,3059657.454,5513.220,gb 679,1245159.516,3059647.046,5514.076,gb 680,1245159.724,3059632.971,5518.545,grnd 139 681,1245150.302,3059837.932,5518.041,bs ck 658-655 682,1245172.897,3059595.248,5516.670,cp 139 683,1245157.660,3059722.823,5517.239,bs ck 682-655 684,1245550.221,3059604.283,5500.443,close 37 1001,1242913.820,3058902.569,5684.667,INV IN 24" X-560 1002,1242913.866,3058901.163,5684.470,INV IN 24" X-560 1003,1242945.414,3058903.226,5683.093,FL, DIRT, OUT560 1004,1242929.150,3058904.630,5690.812,CL DR @ 405 BSLN 1005,1242644.093,3058652.237,5729.162,CL RD X 585 1006,1242634.793,3058632.576,5718.230,INV IN X 585 1007,1242654.271,3058664.168,5717.759,INV OUT X 585 1008,1242852.081,3058677.720,5733.131,CK TO 49 1009,1243150.834,3059219.805,5664.800, SET TPT 1010,1243252.510,3059235.564,5655.976, SET TPT 1011,1243246.495,3059301.510,5654.990, SET TPT 1012,1243237.166,3059119.282,5671.595,X-SECT 530 START 1013,1243234.035,3059122.933,5670.225,X SECT PT 1014,1243231.530,3059125.852,5668.668,X SECT PT 1015,1243229.033,3059128.763,5667.385,X SECT PT 1016,1243223.196,3059135.566,5664.363,X SECT PT 1017,1243221.010,3059138.115,5662.288,X SECT PT 1018,1243216.065,3059143.878,5658.691,X SECT PT file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (14 of 18) [4/15/2009 2:09:36 PM] file: /ll F //PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 1019,1243211.935,3059148.692,5656.328,X SECT PT 1020,1243211.529,3059149.166,5656.262,X SECT PT 1021,1243209.881,3059151.087,5652.100,X SECT PT 1022,1243200.867,3059161.593,5656.689,X SECT PT 1023,1243196.359,3059166.848,5658.451,X SECT PT 1024,1243185.789,3059179.167,5660.433,X SECT PT 1025,1243180.872,3059184.899,5663.099,X SECT PT 1026,1243178.388,3059187.795,5661.572,X SECT PT 1027,1243172.391,3059194.784,5660.512,X SECT PT 1028,1243168.604,3059199.199,5660.469,X SECT PT 1029,1243164.331,3059204.179,5662.040,X SECT PT 1030,1243158.236,3059211.283,5663.654,X SECT PT 1031,1243147.906,3059223.324,5664.468,X SECT PT 1032,1243129.958,3059244.245,5665.313,X-SECT 530 END 1033,1243276.319,3059216.037,5645.515,INV IN RCP 515 1034,1243298.655,3059240.350,5643.573,INV OUT RCP 515 1035,1243284.001,3059223.351,5658.075,LAWN ABOVE 515 1036,1243304.072,3059181.081,5667.990,X SECT 520 BEGIN 1037,1243302.740,3059182.489,5666.484,X SECT 520 1038,1243298.982,3059186.465,5664.453,X SECT 520 1039,1243295.776,3059189.856,5663.312,X SECT 520 1040,1243292.451,3059193.374,5661.388,X SECT 520 1041,1243289.742,3059196.240,5659.935,X SECT 520 1042,1243285.300,3059200.938,5657.041,X SECT 520 1043,1243282.285,3059204.128,5654.354,X SECT 520 1044,1243279.795,3059206.763,5652.238,X SECT 520 1045,1243277.115,3059209.597,5649.855,X SECT 520 1046,1243274.134,3059212.751,5646.752,X SECT 520 1047,1243271.250,3059215.802,5647.039,X SECT 520 1048,1243268.429,3059218.786,5649.312,X SECT 520 1049,1243259.504,3059228.227,5654.103,X SECT 520 1050,1243257.782,3059230.049,5655.824,X SECT 520 1051,1243257.044,3059230.829,5656.078,X SECT 520 1052,1243241.167,3059247.625,5655.733,X SECT 520 1053,1243240.668,3059248.153,5655.460,X SECT 520 1054,1243231.765,3059257.571,5656.290,X SECT 520 1055,1243220.034,3059269.981,5656.425,X SECT 520 1056,1243207.061,3059283.705,5656.262,X SECT 520 1057,1243199.736,3059291.454,5655.828,X SECT 520 1058,1243197.016,3059294.331,5656.248,X SECT 520 1059,1243193.546,3059298.002,5656.590,X SECT 520 1060,1243188.104,3059303.758,5658.495,X SECT 520 1061,1243183.185,3059308.962,5659.804,X SECT 520 file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (15 of 18) [4/15/2009 2:09:36 PM] file: /ll F //PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 1062,1243178.279,3059314.152,5659.620,X SECT 520 END 1063,1243329.453,3059213.118,5499.920,NEW START X-510 1064,1243197.680,3059353.486,5499.920,NEW END X-510 1065,1243329.485,3059213.085,5662.441,X-SECT 510B STRT 1066,1243327.706,3059214.979,5662.282,X-SECT 510 1067,1243324.717,3059218.163,5661.354,X-SECT 510 1068,1243324.241,3059218.670,5658.335,X-SECT 510 1069,1243317.278,3059226.088,5652.690,X-SECT 510 1070,1243310.098,3059233.736,5647.698,X-SECT 510 1071,1243305.359,3059238.783,5644.007,X-SECT 510 1072,1243303.992,3059240.240,5642.552,X-SECT 510 1073,1243300.548,3059243.909,5641.158,X-SECT 510 1074,1243296.956,3059247.735,5644.950,X-SECT 510 1075,1243293.160,3059251.779,5647.540,X-SECT 510 1076,1243289.18113059256.017,5651.197,X-SECT 510 1077,1243281.834,3059263.843,5651.886,X-SECT 510 1078,1243275.353,3059270.747,5651.595,X-SECT 510 1079,1243270.067,3059276.378,5651.764,X-SECT 510 1080,1243266.528,3059280.147,5653.867,X-SECT 510 1081,1243263.818,3059283.035,5653.979,X-SECT 510 1082,1243257.295,3059289.983,5654.269,X-SECT 510 1083,1243248.112,3059299.765,5655.037,X-SECT 510 1084,1243245.355,3059302.702,5654.930,X-SECT 510 1085,1243244.840,3059303.250,5654.582,X-SECT 510 FL 1086,1243233.606,3059315.217,5655.000,X-SECT 510 1087,1243222.160,3059327.409,5654.108,X-SECT 510 FL 1088,1243221.430,3059328.187,5654.399,X-SECT 510 1089,1243210.062,3059340.296,5655.262,X-SECT 510 1090,1243203.314,3059347.484,5657.488,X-SECT 510 1091,1243197.905,3059353.247,5658.229,X-SECT 510B END 1092,1246210.953,3060059.998,5451.068,CL ASPH X-ING240 1093,1246172.560,3060058.956,5451.908,CL ASPH X-ING240 1094,1246064.603,3060060.427,5456.590,CL ASPH X-ING240 1095,1243485.432,3059389.258,5625.608,FL IN X-ING 490 1096,1243498.757,3059389.515,5624.451,FL OUT X-ING 490 1097,1243491.764,3059388.844,5632.641,TOP CTR BRIDG490 1098,1243647.299,3059413.795,5607.686,INV IN CBC 465 1099,1243773.016,3059460.683,5603.331,INV OUT CBC 465 1100,1243752.624,3059440.267,5611.307,CL ASPH RD 465 1101,1243719.990,3059440.219,5613.358,CL ASPH RD 465 1102,1243685.655,3059440.002,5615.677,CL ASPH RD 465 1103,1244281.539,3059737.802,5573.072,CK TO 40 FROM 41 1104,1244298.152,3059733.723,5572.012, SET SPIKE X405 file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (16 of 18) [4/15/2009 2:09:36 PM] file: ///F //PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 1105,1244244.682,3059689.338,5572.431,"+" IN CONC WALK 1106,1244245.023,3059725.935,5573.315,"+" IN CONC WALK 1107,1244241.734,3059735.868,5573.870,"+" IN CONC WALK 1108,1244257.395,3059757.335,5574.500,TOP MON BOX 1109,1244262.743,3059712.654,5572.957,CL AURORA X405 1110,1244241.013,3059712.660,5565.626,INV IN CBC 405 1111,1244289.312,3059712.823,5564.638,INV OUT CBC 405 1112,1244304.334,3059677.685,5563.365,INV OUT36"CMP405 1113,1242964.488,3059791.523,5684.799, 1ST TO TBM 1 1114,1242964.495,3059791.497,5684.811,2ND TO TBM 1 1115,1242964.491,3 059791.510,5684.805, SET 6TH@,BASE 1116,1244841.990,3059561.739,5530.627,TOP CTR RCP 361 1117,1244982.902,3059635.587,5521.632,INV OUT RCP 361 1118,1244863.963,3059636.008,5529.496,INV IN RCP 375 1119,1244918.193,3059666.321,5527.670,INV OUT RCP 375 1120,1244891.033,3059650.554,5534.114,CL EUCLID @ 375 1121,1244930.030,3059607.734,5532.246,CL 6TH @ X361 1122,1244892.540,3059588.802,5534.090,CL EUCLID @ 361 1123,1244900.444,3059668.201,5533.740, SET TEMP TPT 1124,1244924.387,3059630.488,5532.711,X-SECT 370 START 1125,1244924.343,3059639.610,5532.327,X-SECT 1126,1244924.298,3059649.039,5530.103,X-SECT 1127,1244924.265,3059655.956,5528.390,X-SECT 1128,1244924.226,3059663.950,5526.956,X-SECT 1129,1244924.214,3059666.558,5526.673,X-SECT 1130,1244924.205,3059668.280,5526.082,X-SECT 1131,1244924.18713059672.022,5525.630,X-SECT 1132,1244924.160,3059677.703,5527.332,X-SECT 1133,1244924.136,3059682.635,5530.419,X-SECT 1134,1244924.119,3059686.295,5532.079,X-SECT 1135,1244924.060,3059698.372,5533.025,X-SECT 1136,1244923.973,3059716.608,5532.773,X-SECT 1137,1244923.882,3059735.421,5532.315,X-SECT 370 END 1138,1245065.647,3059614.054,5522.529, SET TEMP TPT 1139,1245066.677,3059571.606,5525.855,X-SECT 360 START 1140,1245066.469,3059579.868,5524.235,X-SECT 360 1141,1245066.331,3059585.361,5522.737,X-SECT 360 CONC 1142,1245066.202,3059590.454,5522.163,X-SECT 360 FL 1143,1245065.869,3059603.731,5522.584,X-SECT 360 CL 1144,1245065.493,3059618.663,5522.356,X-SECT 360 1145,1245065.421,3059621.507,5522.142,X-SECT 360 FL 1146,1245065.416,3059621.738,5522.628,X-SECT 360 TOC 1147,1245065.325,3059625.322,5522.382,X-SECT 360 file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (17 of 18) [4/15/2009 2:09:36 PM] file: /ll F //PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/Gregory9.txt 1148,1245065.181,3059631.068,5521.344,X-SECT 360 1149,1245065.070,3059635.491,5519.561,X-SECT 360 FENCE 1150,1245064.87713059643.156,5517.117,X-SECT 360 1151,1245064.626,3059653.135,5519.109,X-SECT 360 1152,1245064.520,3059657.355,5514.580,X-SECT 360 1153,1245064.356,3059663.845,5512.779,X-SECT 360 1154,1245064.326,3059665.038,5512.342,X-SECT 360 1155,1245064.223,3059669.139,5512.056,X-SECT 360 1156,1245064.154,3059671.907,5511.843,X-SECT 360 1157,1245064.150,3059672.041,5513.465,X-SECT 360 1158,1245063.919,3059681.217,5515.481,X-SECT 360 1159,1245063.691,3059690.289,5520.025,X-SECT 360 1160,1245063.517,3059697.215,5521.742,X-SECT 360 FENCE 1161,1245063.159,3059711.460,5522.195,X-SECT 360 1162,1245063.10613059713.533,5522.269,X-SECT 360 END 1163,1244232.223,3059695.066,5568.250,INV IN36"RCP 405 1164,1244170.126,3059714.424,5573.825,SW ABUT LOW 1165,1244170.243,3059714.508,5576.797,SW ABUT PI 1166,1244170.515,3059715.699,5578.057,SW ABUT SLOPE 1167,1244185.423,3059713.503,5578.247,NW ABUT HI-PT 1168,1244184.974,3059712.020,5576.790,NW ABUT PI 1169,1244184.847,3059712.004,5573.267,NW ABUT LOW 1170,1244172.443,3059723.311,5571.655,FL IN 1171,1244188.872,3059720.096,5571.036,FL OUT 1172,1244187.685,3059727.809,5577.291,CK WIDTH 1173,1244281.529,3059737.789,5573.203,CK TO BS 1174,1244172.860,3059730.359,5572.190,SE ABUT LOW 1175,1244172.916,3059730.237,5576.820,SE ABUT PI 1176,1244172.669,3059728.914,5578.198,SE ABUT SLOPE 1177,1244187.697,3059727.878,5572.564,NE ABUT LOW 1178,1244187.657,3059727.786,5576.793,NE ABUT PI 1179,1244187.442,3059726.391,5578.268,NE ABUT PI TOP 1180,1244841.990,3059561.739,5527.301,INV IN RCP X361 1181,1244892.540,3059607.734,0.000,CALC CL 6TH@EUCD 1182,1244262.743,3059687.710,0.000,CALC CL AURORA file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/Gregory9.txt (18 of 18) [4/15/2009 2:09:36 PM] file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/GREGRY 10-TEST.txt 2001,1247930.57201,3061054.46606,5358.49190,X-SECT905 2002,1247918.61551,3061063.19670,53 58.11200,X-SECT905 2003,1247907.89166,3061071.06489,53 58.19030,X-SECT905 2004,1247891.79938,3061076.51459,5358.44660,X-SECT905 2005,1247873.33679,3061083.08907,5358.47610,X-SECT905 2006,1247853.89749,3061089.94835,5358.53750,X-SECT905 2007,124783 9.97657,3061095.05326,53 58.26710,X-SECT905 2008,1247839.63967,3061095.16532,5357.89790,X-SECT905 FL 2009,1247828.70787,3061099.04919,5358.61120,X-SECT905 ASPH 2010,1247820.47529,3061101.79428,5358.80520,X-SECT905 ASPH 2011,1247812.20171,3061104.51128,5358.80210,X-SECT905 ASPH 2012,1247802.44657,3061108.00486,5358.88260,X-SECT905 ASPH 2013,1247793.09931,3061111.41536,5359.10290,X-SECT905 ASPH 2014,1247777.63385,3061116.72060,5359.62610,X-SECT905 ASPH 2015,1247768.25260,3061119.89707,5359.90800,X-SECT905 ASPH 2016,1247763.32804,3061121.47741,5360.06090,X-SECT905 ASPH 2017,1247759.01731,3061123.05605,5360.18790,X-SECT905 ASPH 2021,1247842.36687,3060941.41350,5362.05200,X-SECT 910 2022,1247833.97233,3060948.44144,5361.39760,X-SECT 910 2023,1247822.75962,3060957.86038,5360.54090,X-SECT 910 2024,1247815.15285,3060960.95408,5360.24930,X-SECT 910 2025,1247809.00565,3060963.42905,5359.70970,X-SECT 910 2026,1247807.36913,3060964.12145,5359.79730,X-SECT 910 ASPH 2027,1247794.08902,3060969.61843,5360.65680,X-SECT 910 ASPH 2028,1247788.25473,3060971.92696,5360.62850,X-SECT 910 ASPH 2029,1247780.46802,3060975.08533,5360.25960,X-SECT 910 ASPH 2030,1247776.13229,3060976.86561,5359.91570,X-SECT 910 FL 2031,1247770.55992,3060979.24671,5360.81350,X-SECT 910 2032,1247767.62878,3060980.52114,5360.83560,X-SECT 910 2033,1247761.34462,3060990.14122,5361.34200,X-SECT 910 2034,1247756.07217,3060998.51096,5362.16560,X-SECT 910 2035,1247752.23829,3061006.86451,5361.01580,X-SECT 910 2036,1247741.86034,3061022.24021,5361.21280,X-SECT 910 2037,1247733.30984,3061035.21000,5361.48040,X-SECT 910 2038,1247725.86203,3061046.04033,5361.85750,X-SECT 910 2041,1247169.40418,3060508.58981,5399.19380,X-SECT 150 CONC 2042,1247173.74091,3060524.75327,5399.10650,X-SECT 150 CONC 2043,1247177.35885,3060538.32269,5398.72560,X-SECT 150 CONC 2044,1247181.26071,3060554.45696,5398.47650,X-SECT 150 CONC 2045,1247178.90140,3060558.61134,5398.51420,X-SECT 150 CONC 2046,1247176.18719,3060563.54239,5398.84610,X-SECT 150 DIRT 2047,1247169.41618,3060575.94886,5398.32390,X-SECT 150 DIRT file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY10-TEST.txt (1 of 4) [4/15/2009 2:09:37 PM] file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY 10-TEST.txt 2048,1247169.33220,3060576.49790,5398.27790,X-SECT 150 ROCK 2049,1247168.98630,3060577.30656,5394.44840,X-SECT 150 CHNL 2050,1247167.97760,3060578.66006,5393.87440,X-SECT 150 CHNL 2051,1247167.39677,3060579.83752,5393.62760,X-SECT 150 CHNL 2052,1247166.35508,3060581.53882,5393.99940,X-SECT 150 CHNL 2053,1247165.11044,3060583.79716,5395.27420,X-SECT 150 CHNL 2054,1247164.63958,3060584.59672,5399.28120,X-SECT 150 ROCK 2055,1247160.52379,3060592.82421,5399.14260,X-SECT 150 DIRT 2056,1247154.57653,3060604.08001,5398.56170,X-SECT 150 DIRT 2057,1247166.26510,3060601.43258,5399.02320,GR @ HOUSE COR 2058,1247176.60507,3060626.02927,5399.36150,GR @, HOUSE COR 2059,1247180.97679,3060630.66111,5399.92760,GR 4, HOUSE COR 2060,1247178.07664,3060631.25344,5399.34480,GR @ HOUSE WALL 2071,1246575.10943,3060332.28220,5426.75870,X-SECT 200 DIRT 2072,1246573.53489,3060336.95473,5426.60220,X-SECT 200 DIRT 2073,1246573.13201,3060338.15298,5426.38800,X-SECT 200 DIRT 2074,1246572.19328,3060340.93636,5425.32340,X-SECT 200 DIRT 2075,1246569.23915,3060349.70329,5425.19490,X-SECT 200 DIRT 2076,1246566.06508,3060359.12233,5424.12300,X-SECT 200 DIRT 2077,1246563.27090,3060367.41350,5423.56930,X-SECT 200 DIRT 2078,1246561.60339,3060372.35735,5423.12850,X-SECT 200 DIRT 2079,124 3060373.76893,5421.38340,X-SECT 200 DIRT 2080,1246560.06984,3060376.90621,5420.74320,X-SECT 200 DIRT 2081,1246559.34605,3060379.05368,5420.59480,X-SECT 200 THALW 2082,1246558.43432,3060381.75719,5421.30230,X-SECT 200 DIRT 2083,1246557.92147,3060383.27755,5421.92490,X-SECT 200 DIRT 2084,1246557.24867,3060385.27246,5424.07940,X-SECT 200 DIRT 2085,1246556.67883,3060386.96317,5425.07230,X-SECT 200 DIRT 2086,1246556.05802,3060388.80602,5426.12040,X-SECT 200 DIRT 2087,1246555.57516,3060390.24460,5426.10510,X-SECT 200 DIRT 2088,1246554.89036,3060392.27701,5427.22600,X-SECT 200 DIRT 2089,1246553.97962,3060394.98051,5427.44680,X-SECT 200 DIRT 2090,1246552.99391,3060397.90306,5427.57490,X-SECT 200 DIRT 2091,1246552.67601,3060398.84688,5427.27580,X-SECT 200 DIRT 2092,1246552.35510,3060399.80030,5426.55840,X-SECT 200 DIRT 2093,1246552.07018,3060400.64455,5426.70590,X-SECT 200 DIRT 2094,1246551.73828,3060401.62937,5427.33960,X-SECT 200 DIRT 2095,1246551.46936,3060402.42533,5427.58930,X-SECT 200 DIRT 2096,1246550.92252,3060404.05046,5427.82150,X-SECT 200 DIRT 2097,1246550.51464,3060405.25760,5428.04380,X-SECT 200 ASPH 2098,1246547.22960,3060415.00454,5428.32140,X-SECT 200 ASPH 2099,1246544.80232,3060422.20523,5428.50230,X-SECT 200 ASPH 2100,1246541.62725,3060431.62517,5428.69190,X-SECT 200 GRVL file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY10-TEST.txt (2 of 4) [4/15/2009 2:09:37 PM] file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY 10-TEST.txt 2121,1246341.52492,3060144.56504,5441.62080,X-SECT 230B DIRT 2122,1246333.09539,3060155.20402,5441.30170,X-SECT 230B DIRT 2123,1246328.34978,3060161.24325,5441.35590,X-SECT 230B DIRT 2124,1246322.78641,3060168.62358,5440.77750,X-SECT 230B DIRT 2125,1246314.53083,3060179.71633,5439.37050,X-SECT 230B ROCK 2126,1246314.01398,3060180.60447,5435.73250,X-SECT 230B ROCK 2127,1246311.80463,3060182.96358,5435.39410,X-SECT 230B ROCK 2128,1246311.32677,3060183.48752,5435.10000,X-SECT 230B ROCK 2129,1246310.10413,3060184.56771,5434.88730,X-SECT 230B THAL 2130,1246309.37434,3060185.73306,5434.92460,X-SECT 230B FL 2131,1246309.03144,3060186.18913,5434.96710,X-SECT 230B FL 2132,1246308.98346,3060186.87093,5440.95770,X-SECT 230B ROCK 2133,1246305.59745,3060191.66013,5441.72760,X-SECT 230B DIRT 2134,1246301.98851,3060196.96607,5441.99610,X-SECT 230B CONC 2135,1246300.65590,3060199.68667,5442.08080,X-SECT 23013@WALL 2141,1246269.13314,3060115.79567,5441.42250,X-SECT 250B CONC 2142,1246267.16772,3060119.35053,5441.32680,X-SECT 250B CONC 2143,1246265.39224,3060122.56229,5441.34440,X-SECT 250B GRAS 2144,1246264.17460,3060124.76424,5441.48950,X-SECT 250B ROCK 2145,1246263.70773,3060125.60869,5438.31650,X-SECT 250B FL 2146,1246262.22917,3060128.28171,5438.23870,X-SECT 250B THAL 2147,1246260.83457,3060130.80397,5438.31170,X-SECT 250B FL 2148,1246260.29873,3060131.77399,5441.55630,X-SECT 250B ROCK 2149,1246257.86645,3060136.17300,5441.71020,X-SECT 250B GRAS 2150,1246251.85221,3060147.05011,5442.06960,X-SECT 250B GRAS 2151,1246249.32695,3060151.61627,5442.50360,X-SECT 250B GRAS 2152,1246249.14100,3060151.95327,5442.50380,X-SECT 250B DIRT 2153,1246245.01921,3060159.40598,5443.76540,X-SECT 250B DIRT 2154,1246242.26002,3060164.39532,5444.34030,X-SECT 250B DIRT 2155,1246238.75705,3060170.72996,5444.57050,X-SECT 250B DIRT 2156,1246237.58239,3060172.85474,5444.70890,X-SECT 250B@WALL 2161,1245868.57259,3059745.75127,5471.63470,LAG? 620 PENN 2162,1245869.09943,3059751.29644,5471.16650,LAG? 620 PENN 2163,1245869.04845,3059757.23500,5470.93890,LAG? 620 PENN 2164,1245868.94848,3059757.75765,5469.92890,ENTRNCE 620 PENN 2165,1245869.08844,3059760.83114,5469.89460,ENTRNCE 620 PENN 2166,1245869.24239,3059761.32500,5471.07490,LAG? 620 PENN 2167,1245869.15941,3059766.86388,5471.11470,LAG? 620 PENN 2168,1245868.92248,3059773.51323,5471.86610,LAG? 620 PENN 2171,1245896.90028,3059732.28981,5469.93880,X-SECT 290B DIRT 2172,1245897.05424,3059738.33074,5470.36430,X-SECT 290B DIRT 2173,1245897.00325,3059742.56290,5469.94280,X-SECT 290B DIRT 2174,1245897.32516,3059748.70150,5469.84530,X-SECT 290B DIRT file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY10-TEST.txt (3 of 4) [4/15/2009 2:09:37 PM] file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/GREGRY 10-TEST.txt 2175,1245897.25518,3059759.56881,5469.87010,X-SECT 290B DIRT 2176,1245897.38214,3059768.61716,5469.86430,X-SECT 290B DIRT 2177,1245897.62207,3059776.77047,5470.05640,X-SECT 290B DIRT 2178,1245897.52110,3059778.57104,5470.32470,X-SECT 290B DIRT 2179,1245897.50011,3059779.13078,5471.12970,X-SECT 290B ROCK 2180,1245897.83601,3059784.39684,5472.29080,X-SECT 290B ROCK 2181,1245897.77502,3059786.39555,5471.63830,X-SECT 290B ROCK 2182,1245898.18290,3059787.64818,5470.40320,X-SECT 290B DIRT 2183,1245898.25988,3059796.75461,5470.07600,X-SECT 290B DIRT 2184,1245898.19490,3059801.96548,5470.29540,X-SECT 290B DIRT 2185,1245898.36485,3059806.79607,5472.11120,X-SECT 290B ROCK 2186,1245898.02795,3059814.33546,5471.81520,X-SECT 290B DIRT 2187,1245898.21490,3059822.30052,5471.97310,X-SECT 290B DIRT 2188,1245898.26088,3059831.94619,5471.85610,X-SECT 290B DIRT 2189,1245898.48482,3059848.58252,5471.27940,X-SECT 290B DIRT 2190,1245898.58079,3059859.59459,5470.62390,X-SECT 290B DIRT 2191,1245895.70763,3059862.51293,5470.62430,X-SECT 290B DIRT 2192,1245893.17337,3059865.30621,5469.50250,X-SECT 290B DIRT 2193,1245889.78637,3059868.86237,5468.72390,X-SECT 290B DIRT 2194,1245887.14714,3059871.37963,5468.18900,X-SECT 290B DIRT 2195,1245884.78783,3059874.09803,5468.09160,X-SECT 290B DIRT 2196,1245877.08209,3059882.74980,5468.73580,X-SECT 290B DIRT 2197,1245875.78847,3059884.39432,5469.33960,X-SECT 290B ROCK 2198,1245874.11396,3059886.16640,5470.76820,X-SECT 290B DIRT 2199,1245871.99458,3059888.53940,5471.58810,X-SECT 290B DIRT 2200,1245867.53789,3059893.05478,5473.26580,X-SECT 290B DIRT 2201,1245863.96594,3059878.29980,5469.31840,LAG 650 PENN 2221,1245854.23179,3059777.78987,5474.42300,X-SECT 295 DIRT 2222,1245853.93288,3059780.87207,5474.71110,X-SECT 295 DIRT 2223,1245853.68895,3059782.96485,5474.79570,X-SECT 295 DIRT 2224,1245853.13511,3059786.59049,5474.92020,X-SECT 295 CONC 2225,1245852.57828,3059788.22731,5474.84450,X-SECT 295 CONC 2226,1245852.48130,3059788.44035,5474.66250,X-SECT 295 DIRT 2227,1245851.79251,3059789.34588,5474.59350,X-SECT 295 DIRT 2228,1245851.56057,3059792.07518,5474.24540,X-SECT 295 DIRT 2229,1245850.95575,3059794.68312,5474.24220,X-SECT 295 DIRT 2230,1245849.82208,3059797.22058,5474.16260,X-SECT 295@WALL file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY10-TEST.txt (4 of 4) [4/15/2009 2:09:37 PM] file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY 11.TXT 80,1245507.17255,3059711.73074,5493.08320,GAR ENTRANCE 810 85,1245389.29711,3059683.62198,5496.68590,GAR ENTRANC 1026 86,1245352.14900,3059703.28212,5497.02810,E PATIO OF 1026 87,1245367.72344,3059703.23863,5496.99540,E PATIO OF 1026 88,1245377.30063,3059703.13586,5496.92590,E PATIO OF 1026 89,1245360.65051,3059702.86474,5497.15850,LOWEST FLOOR1026 2241,1245509.40389,3059631.92014,5501.26840,X-SECT 332 LAWN 2242,1245509.66882,3059646.26403,5500.92000,X-SECT 332 LAWN 2243,1245509.26294,3059652.01075,5500.86560,X-SECT 332 ROCKS 2244,1245509.64083,3059667.76093,5501.05100,X-SECT 332 ROCKS 2245,1245509.56985,3059667.93888,5503.19470,X-SECT 332 CONC 2246,1245509.83277,3059678.42261,5503.19260,X-SECT 332 CONC 2247,1245509.53686,3059678.76930,5500.02430,X-SECT 332 ROCKS 2248,1245510.44259,3059684.79634,5495.51470,X-SECT 332 ROCK 2249,1245510.33962,3059687.61241,5493.13660,X-SECT 332 CONC 2250,1245510.76749,3059702.35309,5492.94340,X-SECT 332 CONC 2251,1245511.25735,3059714.18422,5493.05520,X-SECT 332 CONC 2252,1245511.17837,3059715.46634,5493.06870,X-SECT 332 CONC 2253,1245511.19437,3059715.68698,5493.59540,X-SECT 332 CONC 2254,1245511.24935,3059723.95715,5493.50280,X-SECT 332 CONC 2255,1245511.26235,3059724.19199,5493.14060,X-SECT 332 LAWN 2256,1245512.26206,3059731.79556,5493.16430,X-SECT 332 ROCK 2257,1245512.95085,3059740.83021,5492.74270,X-SECT 332 ROCK 2258,1245513.31175,3059742.44373,5491.90110,X-SECT 332 ROCK 2259,1245513.78561,3059747.37059,5488.61330,X-SECT 332 DIRT 2260,1245513.06582,3059751.79439,5487.31270,X-SECT 332THLWAG 2261,1245513.04283, 3059753.92597,5488.10050,X-SECT 332 ROCK 2262,1245512.78990,3059759.59401,5488.60920,X-SECT 332 DIRT 2263,1245513.41272,3059764.44528,5489.52410,X-SECT 332 ROCK 2264,1245514.07752,3059767.73942,5492.14960,X-SECT 332 ROCK 2265,1245514.06253,3059771.81712,5494.63810,X-SECT 332 ROCK 2266,1245514.42642,3059785.18830,5494.89410,X-SECT 332 DIRT 2267,1245513.46170,3059795.08210,5495.11750,X-SECT 332 CONC 2268,1245513.25876,3059805.28241,5495.63820,X-SECT 332 CONC 2269,1245512.71392,3059811.50299,5495.70270,X-SECT 332 CONC 2270,1245512.78590,3059812.49020,5496.06770,X-SECT 332 CONC 2271,1245512.87688,3059813.62746,5496.03710,X-SECT 332 CONC 2272,1245512.90487,3059813.93717,5494.24500,X-SECT 332 CONC 2273,1245511.99014,3059828.56628,5494.23920,X-SECT 332 CONC 2274,1245511.47929,3059836.73499,5494.25960,X-SECT 332 CONC 2275,1245509.51486,3059838.43439,5494.42640,X-SECT 332 CONC 2276,1245507.87434,3059839.77350,5494.61460,X-SECT 332 DIRT file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/GREGRYI LTXT (1 of 4) [4/15/2009 2:09:38 PM] file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY 11.TXT 2277,1245507.61442,3059839.98584,5495.06550,X-SECT 332 CONC 2278,1245504.58531,3059842.46001,5495.11380,X-SECT 332 CONC 2279,1245504.51133,3059842.51979,5494.87100,X-SECT 332 DIRT 2280,1245501.78113,3059844.74924,5494.76200,X-SECT 332 DIRT 2281,1245492.01899,3059852.72140,5495.59410,X-SECT 332 DIRT 2282,1245486.45562,3059857.26467,5496.11760,X-SECT 332 DIRT 2283,1245483.58746,3059859.49981,5496.25240,X-SECT 332 DIRT 2284,1245480.99122,3059861.61040,5497.99040,X-SECT 332 DIRT 2285,1245477.43227,3059865.64181,5498.58220,X-SECT 332 DIRT 2291,1245511.05541,3059720.09979,5493.47670,X-SECT 333 CONC 2292,1245507.13456,3059720.26214,5493.51790,X-SECT 333 CONC 2293,1245506.96061,3059720.26084,5494.11120,X-SECT 333 CONC 2294,1245494.20935,3059720.52606,5494.14280,X-SECT 333 CONC 2295,1245489.53372,3059720.74230,5494.20970,X-SECT 333 CONC 2296,1245479.15376,3059720.75060,5494.22400,X-SECT 333 CONC 2301,1245477.87614,3059622.80651,5503.10460,X-SECT 334 CONC 2302,1245478.30501,3059646.07119,5502.85430,X-SECT 334 LAWN 2303,1245478.39299,3059658.91652,5503.01020,X-SECT 334 ROCK 2304,1245478.60892,3059668.40514,5500.57570,X-SECT 334 ROCK 2305,1245478.66391,3059678.12899,5497.76950,X-SECT 334 ROCK 2306,1245478.72189,3059685.80524,5496.37290,X-SECT 334 ROCK 2307,1245478.77887,3059698.54711,5495.47250,X-SECT 334 ROCK 2308,1245478.88584,3059709.91337,5495.11760,X-SECT 334 ROCK 2309,1245478.91583,3059716.66939,5494.77700,X-SECT 334 ROCK 2310,1245479.06079,3059720.68661,5494.21840,X-SECT 334 CONC 2311,1245479.39369,3059734.59324,5493.83110,X-SECT 334 LAWN 2312,1245479.92754,3059741.02395,5493.32470,X-SECT 334 LAWN 2313,1245478.70889,3059744.38167,5492.75360,X-SECT 334 ROCK 2314,1245477.53824,3059747.48136,5490.86090,X-SECT 334 ROCK 2315,1245476.83644,3059750.07930,5489.66210,X-SECT 334 DIRT 2316,1245475.73477,3059751.87837,5488.64840,X-SECT 334 DIRT 2317,1245475.58881,3059755.85800,5488.14820,X-SECT 334THLWG 2318,1245476.64650,3059757.44943,5488.10520,X-SECT 334THLWG 2319,1245473.43744,3059758.64958,5489.43880,X-SECT 334 ROCK 2320,1245472.44873,3059761.80196,5489.93360,X-SECT 334 ROCK 2321,1245471.42303,3059764.95343,5490.91930,X-SECT 334 ROCK 2322,1245470.23838,3059768.66735,5494.74000,X-SECT 334 ROCK 2323,1245468.37992,3059774.15424,5496.01510,X-SECT 334 LAWN 2324,1245466.56945,3059779.54546,5496.72210,X-SECT 334 LAWN 2325,1245462.58462,3059789.98550,5497.35300,X-SECT 334 DIRT 2331,1245400.38186,3059619.43060,5506.38480,X-SECT 340 CONC 2332,1245400.38186,3059625.61229,5506.30400,X-SECT 340 DIRT 2333,1245400.32788,3059633.38431,5505.41260,X-SECT 340 ROCK file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/GREGRYI LTXT (2 of 4) [4/15/2009 2:09:38 PM] file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY 11.TXT 2334,1245400.31488,3059633.79779,5504.32200,X-SECT 340 DIRT 2335,1245400.24190,3059640.66788,5503.62200,X-SECT 340 DIRT 2336,1245400.60479,3059645.69850,5502.80040,X-SECT 340 DIRT 2337,1245400.69277,3059655.63299,5500.60890,X-SECT 340 DIRT 2338,1245401.04367,3059664.78530,5499.56540,X-SECT 340 DIRT 2339,1245400.97769,3059676.31902,5497.89320,X-SECT 340 DIRT 2340,1245400.92770,3059677.04711,5498.06050,X-SECT 340 CONC 2341,1245401.31859,3059688.37519,5497.95160,X-SECT 340 CONC 2342,1245401.72047,3059700.58781,5497.85010,X-SECT 340 CONC 2343,1245401.67148,3059714.51032,5497.68690,X-SECT 340 CONC 2351,1245401.68948,3059714.53392,5497.68900,X-SECT 341 CONC 2352,1245398.11952,3059714.68677,5497.62250,X-SECT 341 CONC 2353,1245389.54504,3059714.91481,5496.94870,X-SECT 341 DIRT 2354,1245389.56403,3059714.91950,5498.37380,X-SECT 341 STEPS 2355,1245383.49681,3059715.16923,5498.22710,X-SECT 341 STEPS 2356,1245383.43183,3059715.14314,5496.83960,X-SECT 341 DIRT 2357,1245379.42101,3059715.32209,5496.64680,X-SECT 341 DIRT 2358,1245367.33655,3059715.49574,5496.81830,X-SECT 341 DIRT 2359,1245359.92972,3059715.41756,5496.81240,X-SECT 341 DIRT 2360,1245355.93589,3059715.29609,5496.95040,X-SECT 341 DIRT 2361,1245355.25209,3059715.21192,5497.69440,X-SECT 341 ROCK 2362,1245352.18899,3059715.19672,5498.31920,X-SECT 341 ROCK 2363,1245351.80110,3059715.12294,5498.10540,X-SECT 341 DIRT 2371,1245350.68943,3059619.53197,5508.63700,X-SECT 342 CONC 2372,1245350.40751,3059626.55711,5508.57820,X-SECT 342 DIRT 2373,1245350.54347,3059633.70342,5507.81770,X-SECT 342 ROCK 2374,1245350.48449,3059634.10580,5506.61210,X-SECT 342 ROCK 2375,1245350.54347,3059637.97037,5506.59440,X-SECT 342 ROCK 2376,1245350.59546,3059638.56509,5505.06620,X-SECT 342 DIRT 2377,1245350.82239,3059647.76399,5504.49590,X-SECT 342 DIRT 2378,1245351.00234,3059658.76827,5503.54330,X-SECT 342 DIRT 2379,1245351.34324,3059667.00685,5503.68560,X-SECT 342 ROCK 2380,1245351.35124,3059667.51400,5502.73440,X-SECT 342 ROCK 2381,1245351.56017,3059676.57635,5502.53990,X-SECT 342 ROCK 2382,1245351.69913,3059686.51863,5502.11190,X-SECT 342 ROCK 2383,1245351.83509,3059694.21967,5501.72060,X-SECT 342 STONE 2384,1245351.82810,3059695.15230,5499.61390,X-SECT 342 DIRT 2385,1245351.89808,3059702.77537,5499.63520,X-SECT 342 STONE 2386,1245352.03903,3059703.22253,5497.03800,X-SECT 342 CONC 2387,1245351.96306,3059709.86839,5496.97220,X-SECT 342 CONC 2388,1245352.00804,3059709.93717,5499.61410,X-SECT 342 STONE 2389,1245351.93007,3059711.25648,5499.61330,X-SECT 342 STONE 2390,1245351.62615,3059711.88559,5498.87750,X-SECT 342 DIRT file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Survey/GREGRYI LTXT (3 of 4) [4/15/2009 2:09:38 PM] file:///FI/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appendix/4_Survey/GREGRY l LTXT 2391,1245351.71513,3059713.39105,5498.62950,X-SECT 342 DIRT 2392,1245351.83209,3059715.11325,5498.03080,X-SECT 342 DIRT 2393,1245351.93906,3059719.48257,5498.09840,X-SECT 342 DIRT 2394,1245352.26997,3059724.61036,5497.87170,X-SECT 342 DIRT 2395,1245351.59916,3059726.64747,5497.62940,X-SECT 342 ROCK 2396,1245351.09531,3059728.08944,5495.48060,X-SECT 342 ROCK 2397,1245350.62845,3059729.42505,5494.95220,X-SECT 342THLWG 2398,1245350.08661,3059730.97390,5495.00880,X-SECT 342THLWG 2399,1245349.51977,3059732.77317,5495.69150,X-SECT 342 ROCK 2400,1245348.53406,3059735.65532,5496.80370,X-SECT 342 ROCK 2401,1245347.45238,3059738.81870,5497.68250,X-SECT 342 ROCK 2402,1245346.38969,3059741.92589,5498.16170,X-SECT 342 ROCK 2403,1245345.60892,3059744.21082,5499.82810,X-SECT 342 ROCK 2404,1245345.10507,3059745.68218,5500.81660,X-SECT 342 ROCK 2405,1245344.14735,3059748.48316,5502.99780,X-SECT 342 DIRT 2406,1245342.61380,3059752.96965,5503.58950,X-SECT 342 DIRT 2407,1245340.75134,3059758.39496,5503.54150,X-SECT 342 DIRT 2408,1245337.47730,3059767.89577,5502.40950,X-SECT 342 DIRT 2409,1245333.74640,3059778.28253,5502.29370,X-SECT 342 DIRT 2410,1245331.89194,3059783.64285,5502.38670,X-SECT 342 DIRT file:///Fl/PROJECTS%20-%20CURRENT/2003-PROJECTS/0328C/LOMR/Appeudix/4_Suivey/GREGRYI LTXT (4 of 4) [4/15/2009 2:09:38 PM] U 4-) o ~ e i c~uwr~ 0 r ❑ 56 r,IRCLE oR a ~ n W 04,1 L1 ( J bra ! \ 51H ,,T o D j f I ~1 II WIII rrl \ i 700. I ~I i!ll ~1! ~W m r ! ~l+~I!Igl~~ I " s b PARK LN O ! I I L I Ii ~ II ti II' i~ `,~II, iJ ~1 1000 \4 10ao ~.1 r4bo GILBERT ST ° 1M0 000 a a Ef~ F 7- T I ol4b - I 1000 1 oooTi°°0~ .I T '00' 43 1 1 LEGEND 5TH ST r I+ I J RESTUDY 0.5-FT RISE FLOODWAY 0 REGULATORY 100-YR RESTUDY 100-18 / w 0 REGULATORY 500-YR - ( ❑ _ I p 1 RESTUDY 500-YR V)° SHALLOW FLOOD ZONE p ~ o E~y BASE FLOOD ELEVATION 5330 oc o D rri MAIN CHNL CROSS SECTION ~i , I ~ NTH ST 7TH ST SPILL CROSS SECTION CITY OF BOULDER CITY LIMITS GRAPHIC SCALE 1°0 ~ ~ ~ ~ r I PROPERTY BOUNDARIES °0 100 =:JOSE L L_J L~o STREAM CENTERLINE pc~~3 El F661') ORIGINAL SCALE L inch - 100 It rJ ° 00 Q SURVEY CONTROL POINT ❑ 0 F-1 F-1 El r-l GROUND CONTROL SURVEY BY: MERRICK & COMPANY °p1p1m~ OT 80p arz SHEET AERIAL PHOTOGRAPHY BY: MERRICK & COMPANY BLW BELT COLLINS WEST x,84 ~~A GREGORY CANYON CREEK FLOODPLAIN TOPOGRAPHIC MAPPING BY. MERRICK & COMPANY (~~r tow & A-1.1 A II ° M R f~ DATUM: CONTOUR INTERNAL. ONE FEET PEM WORK MAP STA. 63+60 TO STA. 34+00 DATE FLOWN: 2003 CITY OF BOULDER, COLORADO OJL DATUM: HORIZONTAL - NAD83, COLORADO STATE ae n,.. (3W 11I ' t J PLANE COORD. - NORTH, VERTICAL - NAVD88 FEB 2009 rr. (w) ~ni>M JAY 5T ~ D ~ d 0 C3 so 00 E--l 13 El El 110 CD C:j:` 000 Ti 0 Ln El 0 0 c1D lk- E] Cf M El ❑ ❑ En E= p 1 r ~ ❑p 1~ I , o0o LJ ❑ 0 4 o ED 0 Li ❑ 000 «lJ 1 p p ❑ p I ' N C~ U I I ..1. YN _ ~ J ~ N~ N ❑ w~~ I p\ I~ m 1 V\ ~i__ , I I I I ~~f1fN Li I J 1 N T I `5n1 / IOC: EL ti;L_I 1 71-~4-r I El E:l 0- ❑ a N ~ o g c ,aca O 0 ~ iZ ~~,,,..ff~~DF~~AN PL ~ ❑ E3 II o m I--~ - J I-~ LJ U I, o t~o) o 1000 .9 a 5, \ m 13 ~l I o a I11 / I I ~I N looC o \ U ED II Elo LJ v---------- _ j -I TFI- ❑ a ❑ ° ❑ ° ° 1--- U I L I 1 E~C i i' p r r i is ❑ 1 --BT Ix 1( a ~ 0 I ~w LEGEND E ~ ~ ~ ~ ~ I ❑ L~ RESTUDY 0.5-FT RISE FLOODWAY ❑ ❑ ❑ a REGULATORY 100 YR ` I a r? 1 RESTUDY 100-YR - - - - - ]CID 13 REGULATORY 500-YR W Q li RESTUDY 500-YR 1 ~g j SHALLOW FLOOD ZONE z 0 BASE FLOOD ELEVATION 553330 w~ L ❑ l e 1 ~n MAIN CHNL CROSS SECTION 20 ~ v i I I o T / SPILL CROSS SECTION 1 I ❑ I / a L; q 1 CITY OF BOULDER CITY LIMITS El El PROPERTY BOUNDARIES STREAM CENTERLINE 8 ~ i p ~ O GiAPHIC SCALE 44JJ C SURVEY CONTROL POINT a ~m pi 57 D 1 0 0Q 0 ID L r IIX~, ❑ Q ti 1 DEKIE+AL SCALE L ImN - Loo n ❑ Fl In GROUND CONTROL SURVEY BY: MERRICK & COMPANY 0001 oT by u~rz ax9ars ar SHEET AERIAL PHOTOGRAPHY BY. MERRICK & COMPANY 8LW BELT COLLINSWEST GREGORY CANYON CREEK FLOODPLAIN TOPOGRAPHIC MAPPING BY: MERRICK & COMPANY mmr (rummy Lo. & ~soaatea ina) ~~A CONTOUR INTERVAL: ONE FEET PEM WORK MAP STA. 34+00 TO STA. 02+00 2 DATE FLOWN: 2003 CITY OF BOULDER COLORADO OJL w, - Z DATUM: HORIZONTAL - NAD83, COLORADO STATE (mA a'sm ' vmLLV J PLANE COORO. -NORTH, VERTICAL - NAVD88 FEB 2009 rr. (m) oyom _I q JFAN PL E"_ :I C] ro to < rota 0 ov ° GRAPHIC SCALE C] 0 M A ~o f: A o LEGEND (n 17T ❑ ~..._i_ i t too Ll i; r~ 1 a ❑ D 1 I m l I RESTUDY 0.5-FT RISE FLOODWAY ❑ o El o ❑ ❑ / ~ ❑ ~ ro ~ ~ ~ ~ I~~-~~°-'"] awcwu sc~ (IN i loan ~ )oo a REGULATORY 100-YR ~~IIJJ 9 I ~i RESTUDY 100-YR ~ao 0 tooo u l REGULATORY 500-YR .Po to 1 ~ ~~t, I l ° U I RESTUDY 500-YR SHALLOW FLOOD ZONE _ :X 1I : BASE FLOOD ELEVATION R/ l O. El 5330 ❑ o Y ~ ~ ~ ~ I ❑ ❑ > MAIN CHNL CROSS SECTION 2 F1 j I Vkq ❑ ❑ 'DU SPILL CROSS SECTION - 1i ❑ O \ SPLIT FLOW LINE CITY OF BOULDER CITY LIMITS \ I ` J PROPERTY BOUNDARIES V STREAM CENTERLINE J /1 \ 41 iN~ tP1N L ~ I ~ 1 I ~ ~ V y ❑ . % SURVEY CONTROL POINT 1 I I ~ ~ Q ❑ 1 r} V 'I~ O ! ~ 1J o 6 a ~ 1 0 1I UI 1 ❑ II - '1, I'',.' ❑ N IIIJJJ , ~ o o I o` C ,c ❑ [ ❑ ❑ ❑ ❑ o Q a C~ i 1 ~y, z t z L] CQ d ❑ o GY o A I L~ Q Q 0J o0 o S c13 cn 0 El El C15,J 0 ❑ p a ;ri 5 D I El ED Qp ❑ Q ❑ Q 1, [3 tit s~ 0 F "k 1 1, 1__~lllll ❑ 1:1 ❑ o CD ❑ ❑ GROUND CONTROL SURVEY BY. MERRICK & COMPANY of Bop u~rz Rx9arn SHEET AERIAL PHOTOGRAPHY BY: MERRICK & COMPANY BLW BELT COLLINS WEST TOPOGRAPHIC MAPPING BY: MERRICK & COMPANY GREGORY CANYON CREEK FLOODPLAIN CITY OF BOULDER CONTOUR INTERVAL: ONE FEET PEM " ' WORK MAP STA. 22+00 TO STA. 0+00 3 DAIS FLOWN: 2003 ! COLORADO D3L w~.u am eom~w Z DATUM: HORIZONTAL - NAD83, COLORADO STATE as w.. (3W 07"M ' t J PLANE COORO. -NORTH, VERTICAL - NAVO88 FEB 2009 r.. (=).'sm