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IGA; Public Service Company of Colorado; 5th etension of South Boulder Creek Restoration Project; Exp 7/31/2017 Contract Tracking> Thank You Page 1 of 1 STANDARD Contract Routing Cover Sheet Please print and attach to your document You can view the status of your contract using the Contract Tracking Status Pace, Routing Number 20170119-2681 Originating Dept City Attorney Contact Person Mary Bisset Phone Number 303-441-3020 Project Manager/ Contract Deb Kalish E-mail kalishd@bouldercolorado.gov Administrator Counter Parties Public Service Company of Colorado Contract Title/Type Fifth Amendment to Tolling Agreement Number Description Fifth Amendment to Tolling Agreement Special Instructions Please email executed copy to Deb Kalish at kalishd@bouldercolorado.gov Amount NA Expense Type OUTGOING • Dept. Head Signature ' C� NOTE;Originating Department:Identify with a check mark all areas document needs to be routed. • Purchasing • Budget N • Sales Tax .7, . cno • city Manager ✓L-f� t 2�1 17 ra • Central Records .S CD U1 r: Contract Tracklnq Home I Slqnature Routinq Form I Track Contract Status I Update Contract Status https://work.bouldereolorado.gov/ContraetTracking/servlet/Controller 1/19/2017 FIFTH AMENDMENT TO TOLLING AGREEMENT' This Fifth Amendment to Tolling Agreement("Fifth Amendment")is entered into by and between the City of Boulder("City'), a Colorado home rule municipality, and Public Service Company of Colorado ("PSCo"), a Colorado corporation(collectively,the"Parties"and either singularly,the"Party"). This Fifth Amendment shall be effective on February 1,2017. RECITALS A. The Parties previously entered into a tolling agreement (the "Agreement"). The Agreement was executed by the PSCo and the City on July 24, 2014 and July 30, 2014, respectively. The Agreement provided for a tolling period beginning on July 14, 2014 and extending through January 31,2015. The Parties subsequently entered into the First Amendment to Tolling Agreement, which extended the tolling period through February 28, 2015, a Second Amendment to Tolling Agreement, which extended the tolling period through August 31, 2015; a Third Amendment to Tolling Agreement, which extended the tolling period through June 30, 2016; and a Fourth Amendment to Tolling Agreement, which extended the tolling period through January 31,2017. B. The Parties desire to extend the tolling period set forth in the Agreement through July 31,2017. AGREEMENT NOW, THEREFORE,for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged,the Parties agree as follows. 1. The tolling period set forth in the Agreement shall run from February 1,2017 and extend through and including July 31, 2017. 2. All other teams and conditions of the Agreement shall remain unchanged. 3. This Fifth Amendment may be executed in any number of counterparts, each of which shall be deemed to be an original,but all of which shall constitute the same Agreement. SIGNATURES City of Boulder consents to the terms and conditions of this Tolling Agreement by its duly authorized representative on this lGi day of J 2017.. By: Jane S. Brautigam Title: City Manager ATTEST: Ci Jerk APPROVED AS TO PO M: aty Attorneytornev Public Service Company of Colorado consents to the terms and conditions of this Tolling Agreement by its duly authorized representative on this day of 2017. C--,)L ;. C By: David L. Eves Title: President 9/14!2017 Contract Tracking >Thank You OFFICE OF THE CITY ATTORNEY SEP 2 0 2017 STANDARD TO; Contract Routing Cover Sheet Please print and attach to your document You can view the status of your contract using the Contract Tracking Status Page. Routing Number 20170914-3374 Originating Dept Open Space/Mtn Parks Contact Person Joanna Bloom Phone Number 303-441-4251 Project Manager / Contract Don D'AmIco E-mail damicod@bouldercolorado.gov Administrator Counter Parties City and County of Denver Contract Title / Type IGA Between Denver and Boulder for South Boulder Creek Restoration Project Number Description This IGA allows Denver Water to fund OSMP's South Boulder Creek Project(-50OK plus an additional $50K for long term maintenance). Denver Water will then use the South Boulder Creek Project as partial compensatory mitigation for their Gross Reservoir Enlargement Project. Special Instructions Please return one original to Joanna Bloom, Park Central Building 2nd Floor, Public Works. Thanks! 303-441-4251 Amount $500,000 Expense Type INCOMING Dept. Head Signature NOTE, Originating Department: Identify wi a check mark all areas document needs to be routed. Budget CAO • City Manager • Central Records https:/Mwkbouldercolorado.go%IContractTrwWnglseMet/Controller 1/1 bo�)jSign Envelope ID:46BF506F-6CDC-4CB5-B49D-27AOD$DD1130 INTERGOVERNMENTAL AGREEMENT BETWEEN THE CITY AND COUNTY OF DENVER AND THE CITY OF BOULDER FOR THE SOUTH BOULDER CREEK RESTORATION PROJECT This Intergovernmental Agreement("IGA" or"Agreement")between the City and County of Denver, acting by and through its Board of Water Commissioners("Board")and the City of Boulder, a Colorado home rule municipality(`Boulder"), collectively referred to as the"Parties," establishes the roles and responsibilities of the Parties for a stream restoration project on South Boulder Creek. WHEREAS, the Parties are authorized to enter into this IGA pursuant to C.R.S. Section 29.1- 201, et. seg.; and WHEREAS, the Board is currently engaged in the permitting process for its Moffat Collection System Project("Moffat Project"), which includes an expansion of Gross Reservoir ; and WHEREAS, the Parties recognize that through the Board's commitment under the 2010 Intergovernmental Agreement between the City and County of Denver, the City of Boulder, and the City of Lafayette for an Environmental Pool in Gross Reservoir ("2010 IGA"), significant ecological and environmental benefits will result to South Boulder Creek from creation of the Environmental Pool; and WHEREAS, the Board intends to propose additional benefits to South Boulder Creek as compensatory mitigation for its Clean Water Act, Section 404 permit ("404 Permit"), to address impacts of the Moffat Project to riffle pools and inundated tributaries on South Boulder Creek above Gross Reservoir; WHEREAS, Boulder is pursuing a stream restoration project on South Boulder Creek to improve aquatic habitat and to repair habitat improvements damaged in the September 2013 flood; WHEREAS, the Board desires to partner with Boulder in its stream restoration project to provide such additional benefits to South Boulder Creek; and WHEREAS, the stream restoration project on South Boulder Creek below Gross Reservoir, as described in this IGA, will result in benefits to aquatic habitat and stream functions and will be presented by the Board as mitigation to address all impacts to aquatic resources in South Boulder Creek basin from the Moffat Project for Denver Water's 404 Permit. NOW THEREFORE, in consideration of the mutual commitments made herein,the Parties agree as follows: 1. DESCRIPTION AND LOCATION OF THE SOUTH BOULDER CREEK STREAM RESTORATION PROJECT A. Backeround 1 IGA between the City and County of Denver and the City of Boulder for the South Boulder Creek Restoration Project / 17187A DocuSign Envelope ID:46BF506F-BCDC-4CB5-B49D-27AODSDD1130 r , The South Boulder Creek Restoration Project ("Restoration Project") will occur on the section of South Boulder Creek that extends from downstream of Marshall Road to South Boulder Road, a total length of approximately 10,350 feet (2.1 stream miles). The Restoration Project is located on land within the City and County of Boulder, owned by Boulder and managed by the City of Boulder Open Space and Mountain Parks Department as open space land. This area of South Boulder Creek has been significantly impacted by past land uses, including gravel mining, water diversion and channelization. More recently, this section was also significantly impacted by the floods in 2013. Boulder has worked over the years to improve aquatic habitat in South Boulder Creek, including instream habitat improvements, fish passage structures, land management for ecological benefits, public recreation and native riparian enhancements. Boulder has identified this section as a priority for restoration and in 2016 initiated design development of the Restoration Project. The intent of the Restoration Project is to restore and rehabilitate, through mechanical manipulation, the stream functionality by, among other things, reestablishing an adequate low-flow channel to reduce habitat fragmentation and increasing habitat complexity and diversity. B. Restoration Project Objectives To meet mitigation requirements for its 404 Permit, the Board desires to fund and monitor the Restoration Project, as set forth in Article II of this IGA. The Parties agree that the Design Plan, attached hereto and incorporated herein by this reference as Attachment A, shall be the basis for implementation of the Restoration Project and includes the following five primary objectives: 1. Re-establish appropriate channel geometry in balance with the current flow regime to establish a defined low flow thalweg; 2. Stabilize eroded banks; 3. Increase aquatic habitat and bedform diversity by establishing natural riffle-pool complexes based on natural channel design; 4. Increase aquatic habitat and bedform diversity by improving pool condition and instream cover:: and 5. Establish proper sediment transport and substrate condition. Boulder agrees that the Board may present the Restoration Project to the U.S. Army Corps of Engineers ("Corps") for consideration as its compensatory mitigation to offset aquatic resource losses on South Boulder Creek and its tributaries from the Moffat Project. 11. RESPONSIBILITIES OF THE PARTIES A. Federal Permits and Approvals 1. At its cost, the Board shall be responsible for acquiring all necessary federal permits and approvals for the Restoration Project. Boulder shall have no obligations or responsibilities with respect to the Board's 404 Permit requirements. 2 IGA between the City and County of Denver and the City of Boulder for the South Boulder Creek Restoration Project / 17187A ' DocuSign Envelope ID:46BF506F-80DC-4CB5-B49D•27AOD8DD1130 B. Local Permits and Approvals 1. At its cost, Boulder shall be responsible for acquiring all necessary local permits and approvals for the Restoration Project. The Parties shall identify and resolve potential conflicts, if any, between Denver Water's 404 permit conditions and conditions of Boulder's local permits and approvals. 2. Boulder will submit local permits for approval by September 30, 2017, unless an agreement between the Parties is reached on an alternate schedule. 3. Information requests between the Parties and discussions regarding delays during Boulder's efforts to acquire local permits and approvals shall be immediately communicated between the Parties. 4. Upon receipt of all local permits and approvals, Boulder shall notify the Board of completion of this task. C. Restoration Proiect Design 1. At its cost, Boulder shall evaluate comments from Colorado Parks and Wildlife ("CPW") on the Restoration Project. 2. Boulder shall provide the Board a copy of the design modifications that Boulder recommends based on CPW's comments so long as such modifications substantially comply with the Design in Attachment A. 3. The Board will review and notify the Corps of the proposed design modifications within ten(10) business days of submittal, unless an agreement between the Parties is reached on an alternate schedule. The Board shall immediately notify Boulder of the Corps' acceptance of such modifications. 4. If the Corps requires additional information for the design modifications, the Board shall be responsible for the cost of design criteria, which shall be subject to review and approval by Boulder. 5. Design modifications to respond to CPW comments, if any, shall be resolved in accordance with the process above (items 1-4 of this paragraph (B)) by or before June 30,2017. The Parties shall communicate to each other any delays to the anticipated schedule and cooperate to reach agreement on an alternate schedule in response to any such delays. D. Establishment of Baseline Condition 1. Prior to construction of the Restoration Project, and at its sole cost, the Board's consultant shall assess the baseline condition of the Restoration Project site, in accordance with the Board's 404 permit requirements. 2. The Board shall provide Boulder a copy of the baseline condition assessment report. 3. Completion of the Board's baseline condition assessment and report will be prior to start of the construction of the Restoration Project. E. Construction of the Restoration Project 3 IGA between the City and County of Denver and the City of Boulder for the South Boulder Creek Restoration Project /17187A DocuSign Envelope ID:46BF506F-8CDC-4CB5-B49D-27AODBDD1130 1. Boulder shall select and hire a contractor, pursuant to City of Boulder standards, to construct the Restoration Project according to the Design and any modifications approved as described in (B) above. 2. Upon selection of a contractor, Boulder shall provide written notification to the Board of the construction start date, and a copy of the contractor's schedule and budget. 3. Prior to the start of construction for the Restoration Project, the Board shall provide funds to Boulder equal to the total amount of construction costs for the Restoration Project in the bid awarded by Boulder. Construction start, and therefore the Board's payment, is anticipated to be in the Fall of 2017. 4. Boulder shall inform its contractor that the Board's representative, its consultant and a representative from the Corps shall be allowed access to the construction site on an as needed basis. The Board will provide Boulder at least 48-hour advance notice of the Board and its consultant's site visit. The Board will also provide at least 48-hour advance notice of inspections of the Corps,to the extent the Board is made aware of such inspections. 5. All changes in scope, budget or construction delays shall be immediately communicated to the Board by Boulder and agreed upon between the Parties. The Board will make payment to Boulder for the additional costs of such agreed upon changes within sixty (60) days of submittal of a copy of the change order to the Board. 6. The Parties anticipate that construction of the Restoration Project will be complete within ninety (90)days once construction commences. F. Post-Construction Site Assessment 1. Boulder shall notify the Board when construction of the Restoration Project is complete. 2. The Board's consultant will conduct an assessment of the completed Restoration Project pursuant to the Corps 404 Permit, at the Board's cost. 3. The Board shall share a copy of the completed Restoration Project assessment report to Boulder. 4. Post-construction site assessment and report will be completed within sixty (60) days of completion of construction activities. G. Annual Monitoring and Corrective Actions 1. The Board, or its consultant, will, at its sole cost, conduct annual monitoring of the Restoration Project, in accordance with the Board's 404 Permit requirements. 2. The Board shall provide Boulder a copy of each annual monitoring report. 3. In the event that annual monitoring shows that the Restoration Project requires corrective action to the Board's 404 Permit requirements, the Board will provide Boulder written notice of any such corrective actions. The Parties shall mutually agree to the design of such corrective actions and ensure consistency with the Design included in Attachment A. 4. Boulder, or its contractor, shall perform agreed upon corrective actions pursuant to a schedule to be agreed upon by the Parties. 5. The Board shall be solely responsible for the cost of such corrective actions, including design, construction and permitting costs, if any. 6. Boulder will share the consultant's scope and schedule with the Board prior to beginning work on the corrective actions. H. Long-Term:Maintenance 4 IGA between the City and County of Denver and the City of Boulder for the South Boulder Creek Restoration Project i 17187A . Docul Envelope ID',46BF506F-8CDC-4CB5-B49D-27AOD8DD1130 1. The Board will provide Boulder written notification when the Corps has determined that the Board's 404 Permit requirements have been met, i.e. when performance standards have been met and monitoring requirements for the Restoration Project have been fulfilled. 2. At such point,the Board shall no longer have any maintenance,monitoring or funding obligations associated with the Restoration Project. 3. The Board agrees to provide Boulder a pre-payment of $50,000 above the total cost of construction to be used by Boulder for long-term maintenance within or above this stretch of South Boulder Creek for restoration of the Project in the event of a catastrophic flood or other natural event that results in damages to the Restoration Project improvements. 4. Boulder agrees to manage the Restoration Project site in accordance with its open space land requirements. III. ACCESS At all times, Boulder shall allow the Board, its contractors and the Corps access to the property for the purpose of completing obligations under this Agreement and the Board's 404 Permit; however, all access by the Board, its contractors and the Corps shall minimize impacts to the public and Boulder's agricultural lessees, and shall be coordinated at least 48 hours in advance, to the extent possible, with Boulder. IV. BOARD PRE-PAYMENT FOR CONSTRUCTION AND LONG-TERM MAINTENANCE COSTS Upon award of the Restoration Project bid by Boulder, the Board shall pay to Boulder the total amount of the construction costs for the Restoration Project, pursuant to Article II(D) above. In addition to that amount, the Board shall also pay to Boulder the additional $50,000 for future long-term maintenance and flood restoration costs, pursuant to Article II(H). V. RIGHT TO TERMINATE AND AMEND THE IGA In the event the Board decides not to expand Gross Reservoir,the Board may terminate this IGA by providing written notice to Boulder. In the event the IGA is terminated after Restoration Project construction is underway, Boulder shall refund the Board's total costs (construction pre-payment costs plus the additional $50,000 for long-term maintenance and flood restoration), less the construction costs incurred up to that point as evidenced through a contractor invoice. In the event that Boulder is unable to acquire the necessary local permits and approvals for the Restoration Project by December 31, 2017 despite Boulder's diligent efforts, or in the event that such local permits and approvals contain requirements that Boulder determines to be unreasonable, Boulder may terminate this IGA by providing written notice to the Board. Boulder shall refund to the Board any pre-payments made for construction or long-term maintenance and flood restoration. Mutually acceptable amendments to this IGA must be approved in writing and signed by an authorized representative for each Party. VI. NO RIGHTS GRANTED TO THIRD PARTIES 5 IGA between the City and County of Denver and the City of Boulder for the South Boulder Creek Restoration Project / 17187A DocuSign Envelope ID:46BF506F-8CDC4CB5-B48D-27AOD8DD1130 Nothing contained in this IGA is intended to or shall create a contractual relationship with, cause of action in favor of, or claim for relief for any third party. Any third party receiving a benefit from this TGA is only an incidental and unintended beneficiary. VII. MISCELLANEOUS A. Effective Date and Term This IGA shall be effective upon the last date signed by the Parties. The term of this Agreement shall be until acceptance by the Corps that the Board has met its 404 Permit requirements for the Restoration Project. B. Governine Law Colorado law shall govern the administration of this IGA. Venue for purposes of any dispute shall be in the District Court for the City and County of Denver or Boulder County District Court. C. Governmental Immunity Notwithstanding any other provision of this Agreement to the contrary, no term or condition of this Agreement shall be construed or interpreted as a waiver, express or implied, of any of the immunities,rights,benefits, protection,or other provisions of the Colorado Governmental Immunity Act("CGIA"), C.R.S. 24-10-101, et seq., as now or hereafter amended. The Parties understand and agree that liability for claims or injuries to persons or property arising out of negligence of either Party is controlled and limited by the provision of the CGIA. D. No Transfer of Property Interests This IGA does not transfer any property interest in either real property or water. E. Water Duality This IGA makes no guarantee by the Parties as to the quality of water in South Boulder Creek. The Restoration Project is not required to meet any particular water quality standard. F. IGA is Not Assignable This IGA is not assignable without the express written consent of all Parties. G. Cautions The captions used in this document are for convenience only and have no other significance. The captions do not modify the substance of the IGA. H. Notices 6 IGA between the City and County of Denver and the City of Boulder for the South Boulder Creek Restoration Project /17187A DocuSign Envelope ID:46BF506F-8CDC-4CB5-B480-27AODBDD1130 Any notice or communication to any Party under this IGA shall be addressed to the individuals identified below: If to the Board: Travis Bray Travis.brays denverw ater.o rg Denver Water 1600 West 126 Ave. Denver, CO 80204 (303)628-6511 If to Boulder: Don D'Amico, Ecological Systems Supervisor DamicoD(abouldercolorado.gov City of Boulder Open Space and Mountain Parks 66 South Cherryvale Road Boulder, CO 80303 (720)564-2055 City of Boulder Open Space and Mountain Parks Attn: Water Resources Administrator P.O. Box 791 Boulder, CO 80306 (303)441-3440 7 IGA between the City and County of Denver and the City of Boulder for the South Boulder Creek Restoration Project /17187A DocuSign Envelope ID:46BF506F-8CDC-4GB5-B49D-27AOD8DD1130 APPROVED: AGREED AND ACCEPTED: THE CITY AND COUNTY OF DENVER DxuSlgnee by acting by and through its BOARD OF WATER COMMISSIONERS DocuSignetl by: By:��eTPi .... Paula Herzmark, President Date: 7/26/2017 APPROVED: E DOCUS19/ bby; By: of-,.,a REGISTERED AND COUNTERSIGNED: Michael E. King, Chief External Affairs Officer CITY AND COUNTY OF DENVER DS OocuSlgneE by: B}':Cnwc�a�ivn%ra/i-, Timothy M. O'Brien, CPA Auditor Approved as to form: DocuSignetl by: CME E. S16 By: Office of General Counsel 8 IGA between the City and County of Denver and the City of Boulder for the South Boulder Creek Restoration Project / 17187A DocuSign Envelope ID:46BF506F-8CDC-4CB5-649D-27AODSDD1130 CITY OF BOULDER, COLORADO By.�S .- Jane Brauu�t��igam, City Mang Date: �1F'YY /�� Attest: By. 1 ,,—tb' Ci rk Approved as to form: By: L)jt� City Atto6hey 9 IGA between the City and County of Denver and the City of Boulder for the South Boulder Creek Restoration Project / 17187A y SOUTH BOULDER CREEK HABITAT IMPROVEMENTS PROJECT SBC HIP Attachment A 30% CONCEPTUAL DESIGN PLAN AUGUST 29, 2016 INDEXLegen Approcirnate Project Location a'' �•� Project Reach 1-2 miles) SHEET # TITLE 1 COVER 2 PROJECT OVERVIEW PLANVIEW 1-3 PROJECT REACH 1 [ fir_. GrN r a'N 4 PROJECT REACH 2 r 5 PROJECT REACH 3 w I - neenL�: j 6 PROJECT REACH 4 E� 7 DESIGN TABLE «Na.:. a U 8 TYPICAL DETAILS �DeWastream Project Limit 9 1 TYPICAL DETAILS 10 II CHANNEL PROFILES t 1I 1 NOTES 5 1111 VV 0.d -� Upstream Project Limit NSupenor 1 � _ Lan�mont _, BOldder no tia p ��G Prepared For: - kmrs r City of Boulder Open Space and Mountain Parks Department (OSMP) 66 South Cherryvale Road u Boulder,Colorado 80303 a , 2 5 rinpc ECOLOGICAL RESOURCES CONSULTANTS,INC CITY OF BOULDER SOUTH BOULDER CREEK 5672 JUHLS DRIVE OPEN SPACE AND MOUNTAIN PARKS HABITAT IMPROVEMENT PROJECT COVER SHEET BOULDER,CO 80301 AUGUST 29,2016 . . •�� ^ , MOrs hall Rtl 5 Marshal�iRd�Ma•Sh9.l Rtl ' ? _- �i. ? r' .! � '� r� 41 Ilk 1�f lya / 1 c C_ _ r � r � 1 ?¢, :. ;. � 'f i.v fly •� ?,, - .4. / - - Notes: - 7. Remove and Reuse All Existing E !-stream Features. Reuse Reach 1: [ i • 8 Logs f{ i( � r 50 BouldersC-S 2. Construct in Glides: •' '} 9 BHC • 8 WD _ (gLTV��lllDc i-a.'1]t.-mvlLr n. nD - o Z o _ T head O rli 9 Channel Centene Ch Project Reach Limits Proposed Concept Features C` Backfill Erosion GuOy wO Cobble_ 1 Remove Excess Sediment _ _ t Bank Stabdl ation .r aQX3>Construclion Access Boulder HabiWl Cluater(BHC). Large Woody Debris(LWD) = + fjT✓ - O Q O 'r Remove Debris Dam moll lopV I _ C4G7uL>�AGL�F7L�au ., ECOLOGICAL RESOURCES CONSULTANTS,INC 1 in= 100 feet CITY OF BOULDER SOUTH BOULDER CREEK 55721UHLS DRIVE o 100 200 Feet OPEN SPACE AND MOUNTAIN PARKS HABITAT IMPROVEMENT PROJECT PROJECT REACH 1 BOULDER,CO 80301 I I I I I I i AUGUST 29,2016 9TOZ'6Z 15n9nV ToEos oJ'Nacnno6 Z HDV38133fOlId 133fONd 1N3W3AOHdWI 1VIISVH SHNVd NIV1NnOW aNV 3:)VdS N3do iaa-ou 001 0 WHO s1Hnr ztes )ORD a3alnOe H11105 malnoa j0 Ain Iaa)001 =ui ; JNI'S1NV11nSNOJ S3JtlnOS3H M1901033 I f t. I Iz ! Iw.= E: Imp wed sipa4 anowaa �. IfQfJvll algae Apoogq a61e1 ��HB)lalsnlp leAgeN�aPN�e Q ssa vuoponllsrop4"> mjezpigels nue8 13: _ lvaunPas ssaox3 anowad so !(l - alagoo qji.Apt)uotso131gj-,8 njuaA .-. __- sai sp:wl 4aeaii aaouoD ra dotloud (Z o m V�"-`- lauvegp 6wislx3 f :` r vuiess7 I_ "t moi_' F ryy Stu l J m • .r .,'.>ti, �, ,, q�. - .� ,. � `'.'�I b p h_ F CIMI Z L . DIAS 1'L :sap!IE) w JJnJ}suoJ .Z slapino8 06 • - - :7 y:)oay asnab �` I /1 T. J \ Notes: /Ij \ 1. Remove and Reuse All Existing Instream Features. LXJ1At�NiV:YIFid' iC�l±d.; S ;: Reuse Reach 1 _ -• - \ (� ME D u0 • 12 Logs ZI o \ ' � 33 Boulders 2. Construd in Glides. \ T BHC I \ 10 LWD WOPM s.4 u - I Z �Existing Channel Centerline --Ditch • •• oc�o Project Reach Limits • {X`. k Proposed Concept Features 8. J •�. ,L T k 4 C Backfi l Erosion Gully with Cobble ( r13 AiE�$r.-89 C3 Remove Excess sediment jyyrry,.Df Bank stabilization t t - Qz3t>Construceo0Access `° Boulder Habitat Cluster(BHC) _ _ ® Large Woody Debits(LWD) ` � A.• - _ - - Remove Debris Dam if �71 T / _ Rao ��raoaaDex�J�x� I ECOLOGICAL RESOURCES CONSULTANTS,INC 1 in=100 feet CITY OF BOULDER SOUTH BOULDER CREEK 5672 JUHLS DRIVE 0 100 200 Feet OPEN SPACE AND MOUNTAIN PARKSHABITAT IMPROVEMENT PROJECT PROJECT REACH 3 5 BOULDER,CO80301 I I t- t r- 1 AUGUST 29,2016 9i0Z 6ZlSf19(ttl cososo3'a3a1noa 9 b H3tl3a 13WOOHd 133fOad 1N3W3/1021dWI1tl11SVH SHNtld NIV1Nf10W ONV DWS N3d0 Iaa3 00Z oat 0 3AINOSIHnrzL95 N33113 83OIflOa H1f1O5 Mama i0 A113 Pal 00 =u) 3NI'siNVllnSN03 snunosmiv31901OJ3 wed wgap ano=a - - ((IMl)stwo 1paoM a6iei 13H�,aysnl3le04eH jafNnoe � a jL•` i e rsa�danpntlsua3Qr�Dr uoyezgigelS 3uee . J , I. - P� ' luawpas ss.=a encmaa a10go3 Ulp pino uaso,3 uppee sain7eaq 7dsw o pesodmd -- 'it , spu6l Peaitl MfOtd. n auipaWa3 leuuegp Sa4s{x3— f/ 1 (IRST % IMP 1I OMI Z rls�l JHa L o . +n- saP99 ui pru4suo, g "A1!,aA o!dWSO Pa{Iunl SSOD' 7 4:>oay -Z s3apino9 OZ SBOI Z :q y:)oaa asneS -sa3nloaj woa3ysul 6w4six3 IAV asnay puo anowab 'I :sa}oN Rife i tool 1 Riffle PxlLength Fi e I Pod Elll4ting Design Riffle Tn:.1.va0 Ee.-nPl 1 ees4ln fl WERe 'rryalcrag I Ri.cnB !1 siSr Leto R+FOr: Tpalrng i Stadon '0' Eleu.(R) 61ee.(@) Slope(%} Cut(ft) �vt Sta!i4n s0 les•.ifti E)".(hl1{Lenten 5bocM �(h} ! erek Strdfap ID IElev.(RI Ci v,(ft)� illopc(:<�J:[uf lftl BanF [ftl i� Sme Ih} 9ht I IRl side 190 Beafth Edl -&=I5 _53312 0.0 3790 Rife Beginning 1715,36.051 5,365.1 1 210.: -0.3 7090 Rife BegImPiB33 5403361 54032 1 1 LZOM 0.3 240 Glidel 5 32.4E 5331.2 12 3855 Glitle 18 5,365,36 5,3647 0:7 7130 Okla 34 5,403.701 5.40U3 1 14 290 Pool 5,332,68 5,330.3 2.4 telt 39X1 Pool 18 5,367.11 5,3643 2-9 Right 7170 Pool 34 5.404,04 S.WLS 2.6 Right 310 RifeEndl 5.332.79 5,332.3 go 0.5 39W Riffle End 19 5,367.44 5,366.3 711 L2 M760SGfid� En834 5.404.39 5,4035 110 0.9 $.00 Rife inns 1 5,33353 5,3336 170% -0,1 4020 ffelleglnningl8 5,36&06 5,368.1 L60M 0.0 nning34 5A0532 5,405.3 L71A3 00 420 Glide 5,33395 535LB Lt. 4055 Gide 19 5,36&37 5,3672 I.] e 35 5406,80 5,404.6 L3 450 Pool 5,33438 5,332,0 2.3 Right 4090 Mol 19 5,368.68 5,366.4 23 Left 35 5,40645 %40.S L6 at I 470 RifeEnd2 5,334.66 5,334.0 35 0.6 4120 Rife End 19 5,361.94 5,369.4 55 0.6 nd35 5,406.72 5,4058 W 09 505 Riftletiegiadn 2 5,335.16 5,334.9 250% 0.2 4175 Rlille Beginning 19 5,340.43 5,369.4 1.90% 0.0 lnning3S 5,407,25 5.401.2 2.25% 0.1 562.5 Glide 533598 5,334.2 18 42125 GIIde20 $,371,01 5,340,6 2S e 36 540783 5,4063 1,5 620 Pool 5,336.60 5,333.5 3.1 left 4250 Pool 20 %171446 5,367.7 I 3.7 Right 7670 Pod[36 5,408.43 SAME 29 Leh 640 ffeEnd3 5,335.65 5,335.5 70 l.2 4240 Rife End M- 5,371.53 5.369.7 100 1.8 Inn Rife End 36 5AM67 5040.5 147 1.2 710 Rdge Innin 3 5,33686 5,335.8 1,90% SS 4380 Rife Beginning 20 5,372.00 5,372.0 1 2.3016 QD 7847 I RifeBeginning36 5,409.98 5,410.0 170% 0.0 735 Glide 5,336.95 5,3359 Ll 4425 Gfide21 5,37127 5,3713 1.0 787E mtddoiStdidt9e l'SAMA 5,410.4 60 760 Pool 5.337.10 5335.0 22 Right 4470 Pon 21 5.372.53 5,370,5 21 left 7990 M"dt61`tSALLM 541L2 00 790 RifeOd4 5,337.37 5,337.0 70 OA 4495 Rife End 21 5,37267 5,3713 W 0.4 8075 Ghde37 5,411.96 5,410.8 1 1.2 850 Rife Reginning4 5,33799 5,337.9' 1.40% 0.1 4575 Rife Beginnlng2l 5,373,11 5,373.5 1-50% -0.4 8160 Pod 37 5A1L93 5,410.3 2.6 Right 905Glides 5.338.38 513372 1.2 4612.5 Glide 22 5,373.50 5,371,7 0.8 8190 Rife End 37 5,4135 5.412.3 60 0-9 950 Pod 5' 5,336.71 5,336.4 2A left 46W Pooi 22 5,370.10 5,371,0 Ll Right 8210 Rife Beginning 37 5,413,92 SAILLS 2.497. 0.1 980 Rife End s $33944 5,3384 So 0.5 4575 Rife End Z2 5,37450 5,374.0 75 0.5 82W Glide 313 5.414.25 5411,9 13 1060 Rife BegimtMg5 5339.74 5,339.6 L70% 0.0 4750 Rife Beghtling22 5375.71 5,3757 2.30% 0.0 8310 Pool 38 5414S9 5432.0 2.6 ftlit 1090 Glide 534000 5,3399 1.1 4825 Glide 23 5,37606 5,3749 F2 8330 Rife End 38 541481 5.414.0 SO 0.8 11X1 Pool ;5.34657 5,338.1 _ 12 Right 4840 Pool 23 537630 53741 1,2 Left 8330 Rife Beginning 38 541515 5.4151 120A 0.2 1140 ffe.End6 5.340.44 5,340.1 40 W17- 4895 Riffle End 23 5,376.46 $,376,1 217 0.4 8395 Glide 39 5,415.50 S,4142 y 3.3 1180 Riffle"Inning 6 5.340.79 5,3408 1.80% 0.0- 5112 Rife Reglnning73 5,379.78 5,3804 200.K -P.6 8410 - POW 39 5,425.6 5,413.3 : 1,4 Left 1195 Glide 5340.92 5.339.8 1,3 5754 lirvik 532691 -vilfe9c . ' •0.0 ' 8•t5D Rife Md39 5416113 54153 90 OX 1210 Pool? 5,341.06 5,3388 2.2 Left 5189. CMntd.Stry 762 Sp9sal .5085.2 0.0 WAD RifeBeglMsing39 5,417.011 5,416.9 1.50. 0.1 1240 RifeEnd7 5,341.32 53408 40 0.5 Is= Mil Fal ''%385S3 5385:6=i u 1 8625 Glide 40 5AI7.83 I SAWA 1.4 1280 Rife Beginning 7 5,341.47 5,341.3 1.10% 02 5240 GIIde24 5,385.67 5.3844 13 87111 Poll 54ISA5 5415-? 1,6 Right 1305 Glide 5,34157 53013 L3 5260 Pod 24 538540 5,30'6 22 R t 8740 ffeEnd40 54118.68 5417.9 40 08 1330 Pod B• 5,341,67 5339.3 1,4 Right 5290 Riille End 24 5,385.99 5,385.6 90 0.4 8740 RifeSeg(ndngW 5418.9:1 5438.8 7409 0.1 1350 fife.End 9 5,341,79 5,341.3 . I50 0, 5380 Rife Beglnning24 5,38656 5,386.4 0.90% 0.2 8835 GIIde41 54193S 5,4110 1,3 1510 Rife BeginningS 5,34242 5,341,5 0.80% 0.11 5105 Glide 25 5,386.71 5,36.4 L4 8890 Pod 41 541924 5417.2 Z.S left 1550 Glide9 5,34759 53415 1.1 5430 Pool 5,386.13 5,314.4 LS left Will RifeEnd41 5419.95 5.439.2 1181 0.7 1590 pool 5342.79 5.340.5 2.3 1 Left 5475 Rife Ends 538699 5,3864 225 0.6 9020 ffe&gin.dng41 5,42097 5.421.1 I-BM -0.1 1620 RlfeEnd9 5,342.99 5342.5 90 0.5 5600 Rife Reginniv&25 5,387.44 5,387.5 090% 0.0 9040 Glide 42 5421,54 7;430.5 11 1710 Rife 'nn( 9 5.343,59 5,343.6. 1.90% 0.0 5625 Glide 26 5,397,53 5,306,6 11.9 9100 Pod 42 5,421.31 5.4159 22. nv" 1770 Glide 10 534399 5342.8 1 1.2 5650 Pool 26 3,367.77 5:3857 2.1 Right 9130 RifeEnd42 542'4 5,4719 i 50 1%1 I1W Pool to 5,34440 5,3419 2s Right 5675 Rife Fed 26 5388.09 5,387.7 85 0.4 Wel) RifeM nning42 5423.E 14,3,2 t 760X D.1 1850 'life End 10 5,344,53 5343.9S0 0.6 5760 Rifelleginning26 5,389.19 5,360.3 1.90% AD% 9190 Glide 43 542339{ 5,4272,31 1.1 1940 R1fe8ej0nningl0 5,345.00 53449 2.07M 0.1 SSSS Glide 539842 538.9 15 9X10 Pod 43 SA7353 5,4214 1 2.2 Left ' '19H>- _Spill .. . .-a -''$3aff40'iS45A:. DA 5950 Pod 27 ;391.60 5,3837 32 IeR 9220 Rfllle Fnd43 5421,32 54234 W U4 W14 [wdwlSiddi"31,4399;18 5;318.2 0.0' Sell fife End 27 5,391,92 53904 103 15 92711 ffeBeglndng43 5,42tu 5420.6 240% 0.0 2250 AI211AW "Wall- 5350' OA GM RifeBeginning 27 5,392.911 5,392.9 2,509 GA 9320 Glide44 54251E SA21S I 1.2 236 Glide 11 5,351.32 5,349.9 1,4 61375 Glide 5,391,51 5,392,2 L4 9340 Mala 5,43546 _5421,1 2.3 Right 2360 Pool 11 5,35193 5,34701. 1,8 Left 6195 Pool 28 5,394.02 5,391.5 25 1 Right 938D ffeEed44 5,425.76 54251 ill 0.6 2390 fDfeEWILL 5,35227 5,351,1 70 1.1 6220 Rife End 26 5,394.21 5393.5 50 0.7 9440 MM&Milnniag44 5,427.01 5,427.1 7.007. -111 2460 Rife Beginning 11 5353A5 5,3545 2.00% 0.5 6270 RlfeBegiriddi78 5,394.58 5,394.7 2700% -0.1 9540 Glide45 542&17 5,426.9 : 1.3 7520 Glide 12 5,35331 5,351,8 2.0 6322.5 Glide 29 5394.98 5,394.1 0.9 9650 - Pool 45 5,429.32 S,42h6 L7 Left 7540 Pool 12 5,35482 5.3511 3.7 Ri t 6375 Pool 29- 5,395.72 5,3935 22 Right 9680 Rife End 45 .5429.73 5,42561 ill 1.1 2610 ffeLnd12 5,355.32 5,353.1 SO 22 6395 Rife End 29 5396.02 5,855 45 0.S 97W ffe Beginning 45 5,430.68 5,430.3 7505 0.3 2700 Riffle"waintg1Z 5356.83 5,355.0 1 2.105 18 6440 Rife Be rdiln 29 5,396.0 5,396.6 2.4076 0.1 9775 Glitle 46 543102 5,429.4 1.6 2766 Gide 13 5,357,92 5,3544 I '6 6450 (Aide30 5,39683 5395.7 1,2 9400 Pad 46 5431.36 5428.5 2.9 Right 2830 Pool 13 5,359.01 539.7 53 left 6460 Pool 3D 5,396.98 5,394.7 _ 22 left 9830 Rife End46 . 54315130.5 . 1(74 LO 286 RlferEtd13 5,359.52 5.355.7 50 38 6490 Riffle WW 5,337.42 5,3967 65 0.7 9935 ffefeBinning46 -5432.54 54763 1 .12001, 0.] 2910 Rife Beehning 13 5.360.02 53567 Zwr 33 6555 Rife Beginning 30 5,398,15 ,5397.8 1.70% 0.3 9957.5 Glide47 543191 5,4309 1 1.0 2945 Gide 14 51360.03 513559 4.2 5575 611de31 5.39636 53969 1 L4 9940 Poll 47 5'3416 5.430.0 , 2.1 Let[ 2980 Pool 14 5,360.04 5,355.0 'so Right 6595 Pool 31 5,39&57 5,396.0 2-6 Left IW70 Rife Esd47 5,4315(• 54320 so 0.S 3000 'RlfeEndl4 5350.04 5,357.0 40 370 6675 Rife Erel 5,39&90 5,398.0 95 0.9 10091) ff.&gindng47 5,43365 S,1W 22Ro .0.1 3640 RlfellegNnin 14 5,36.05 5,357.8 2.40% 22 6720 Rife9e ml 31 5,399.05 5,399.9 2700% 411 30100 Glide 48 5433.40 5431,9 0.9 3080 Gide15 536006 51356.9 3.1 61% Gide 32 5140017 51399.1 23 ID110 Pod148 5,430.04 SA3L7 ' .19 Right 3120 Pool 15 5,3WA6 5,356.1 4.0 Left 6747 Pool 32 5.400.47 5,3912 1,2 Right 10135 Rife End _ 5,434.48 5434.1 1 40 04 3150 Rife End 15 5,36007 5,358.1 IW 2.0 6800 Rife End 32 5,400,69 5.400.2 30, M4 20175 Rife Beginning 49 5,435.19 5435E 2_000 DA N01E 32`50 Rife Beginning IS 5313603 5,360:1 1,0036 0,0 6830 Riffle Be innin 32 5,40198 5440.9 2.3U% 0.1 302025 - Gltde49 5703561 54343 14 REFERTOSHEETB(RIFFLEPOOLSEOUENCERMCAL 3330 Glide 16 5.360.43 5.359.4 LO 69075 Glide 33 5. 0 72 5.400.3 1.4 10230 Pool 49 543616 5143.35 1 77 Left DETAIL)ANDSHEET911YPKALCHANNFICROSS 3410 Pool 16 --,WLn 5.358.8 770 Fight 6415 Pool 33 5400.38 5,.399.7 1,7 Left ]-263 ffeEnd49 5436.40 5,4355 6 13 SECTION)OIMENSRlWS. 3440 RifeFnd l6 51361.61 5.340.8 ]]0 08 7020 FifeEnd 33. 15.4nn] 5,�7 70 Ll 10350 Rife Beginnitigea 5437.33 5.4373 L20i. 0.0 IRR)RIFFIFBEGINNING 3550 RifePo ndi 16 5,36294 5,362.9 L90% on 10437.5 Glide 50 5438,09 5,436.5 1.5 (RE)RIFFLEEND 3617.5 Glide 5,363.65 5,862.2 1.4 10515 Metro 5,439.05 5435.7 33 Right fIPDD! 3695 Pool r7 5,364.20 53616 2.6 Left 10550 Riffle 50 5.43933 >.43T.7, LB ! LS (G)Gum 3715 Rife Fed 17 15364.76 5363.6 75 0.9 IUR50 Rlfe Be6lnningW 5,440=451 i,440.4I 1.40;6 00 10740 Al Ea68tig S;l'um 54416 OA' ECOLOGICAL RESOURCES CONSULTANTS,INC CITY OF BOULDER SOUTH BOULDER CREEK 5672 JUHLS DRIVE OPEN SPACE AND MOUNTAIN PARKS HABITAT IMPROVEMENT PROJECT DESIGN TABLE 7 BOULDER,CO 80301 AUGUST 29,2016 9TOZ '6Z1SnOnV iomo:`>r3ainoq I SllV134lV:)IdA1 1-33fOHd 1NIMAOMNI1V11HVH SAaVd NIV1NnoiN (INV 3:)Vd5 N3dO 3A1HGsiHnru9: Munm3cnoo8Hinos M3uin093011Lp oN('sluvlins o3s37anos3alv319a1a73 s raalA NVIJ SIJQ-.'gcuJ3e SSUHOf 1 Ittl136�vJ+di,i 3'?ir?flt?3s Igpd�ld�lq as 777 77, 'IE._]S:IV7idA1301d3 i�3S 101d-31jjitl o0 aawv `: ISI >awA uwm:: _ I—I I 3 _.--j __"� ___ � '� iu'n'NalYea.43'i JL � Jvl HJl:'jM1Jb v�bdU00 I Y- I� .MYY➢99-1ffwfrc3XlsiGao 4fKdLJ �� �GM I .wsln _ `�• 6 )M•9w5Po:1.aID ' ��'PI�O 1 I �.. . 3llf4ICI1Ki /`\ •a WI1CnTY •..- -..aM / Vr, sYW niNWYJ :4' •Y. 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F� ff-.MnB(Nv?i A,141L6Yean e a I� 3 _ _ 5"c WV'3NISdN43Wr4 tap:J 7 I WY3als,+t N3aYfi)>?i pia lf101cs 3,"s LZ•�'? ~ _----�. �7V.i21(Ifi ii31V•VM1 11fYjNNH6 r � � � NIW bq.l-9G1 44a0'm08tl3`AviB r � i t I!I I i l l p Ibsdolanm3n �� '� `' laa nie•k�� I , �'1, t .\,� JaNNv-a 1OHi"00 MOISOMn-nnjANas i �e mo ao138w3U3smonu t lNliSlk3 H91VPI ?�-�� iNg1YM'J13NODS3(IT l9311'1.'11Y1t9bN U30'IfMB `�`` XNve a3oaL'J38 U3HSJNI9 9pl aNT3S0113S 1'hIf03}Ji)NBLZl�7 i .flit Sa3[IYgHS L9:1Nh-18`tliSlWci.i NOIJCtli g r ka ' y ilFl*d.SONv03�Ye`HN I (EiIJNNI:V)tiddSc'VOM SMOlIM NO "M 3AILNN SF I.M.43 L+SF LGOS;MLEBONUWVTd BnNHS 'MAJNddv NJrv.s dMSO N(rdJ9 S1V6Y Ua15318tlIWAV IJJM 3013188GJ 0310Vd4'd00 I H10UA TfnaNv8 vmtc�mnoezls to F '..C, fl31JiL1S8n838 hV'J�JNISNtl7d 9110145 - st3aincea38vY48 �.i.r1tlN011<yb BoNtlidfl N '9WSJX3 ::ILLY_'11:84t.`%NYE l3NNN1;0:¢:'31;i;' maa3axwH-t� I m_eMs92361MA BANKFULL WIDTH BANKFULL WIDTH 30' 28' I Iw Iz 3w 2.5 1 3 Q�z 2.5 2.5 1 4 'a�z 2-5 3' t2' -I_ 12' 3' 3-5' 10.5 -_J-10.5 3.5' PE SIDE SIDE SLOPE 24' SLOPE SIDE SLOPE 21- SIDE SLOPE BOTTOM BOTTOM RIFFLE BEGINING RIFFLE END BANKFULL WIDTH 30' Iw L C 4I� rw U 6 1 2.5 3.4' 1�- 1 -00000 19' �-2' 9' l INSIDE BEND SIDE SLOPE BOTTOM OUTSIDE BEND SIDE SLOPE POOL BANKFULL WIDTH 30' 5 , wlrc 2.5 W t 2-3' =ly 1 HIV 12' 12' 6' INSIDE BEND SIDE SLOPE BOTTOM OUTSIDE BEND SIDE SLOPE GLIDE NOTE: GEOMETRY OF DIFFERENTSTREAM ELEMENTS SHOULD GENERALLY MATCH THE DIMENSIONS TYPICAL CHANNEL CROSS-SECTION DIMENSIONS-(NTS) PRESENTED HERE BUT INCLUDE SOME VARIABILITY AS DIRECTED BY THE PROJECT DESIGNER IN THE FIELD TO ACHIEVE A MORE NATURAL FEEL. DESIGN BANKFULL ESTABLISHED AT 185 CUBIC FEET PER SECOND(CFS) ECOLOGICAL RESOURCES CONSULTANTS,INC CITY OF BOULDER SOUTH BOULDER CREEK 5672 JUHLS DRIVE OPEN SPACE AND MOUNTAIN PARKS HABITAT IMPROVEMENT PROTECT TYPICAL DETAILS BOULDER,CO 80301 AUGUST 29,2016 O 9i0Z 16Z lsn9nV t0E08071S301no9 " 5311AO'dd 13NNVH3 133fOHd LN3W3AOMdWl IVIIOVH S)fHVd NIViNnOW ONV 3:)VdS NUO 3nla0slena,95 MMUD N301nO9 HinOs Minos j0.lip 7NI'S1NVilnSN07S37Sn053S1tl71901073 NO11Vi5 N011V is 00011 o000T 0056 Oon 0059 ,_.:.. ..:._. ooSw 00101 Ci1S9 0009 OOSS 0005 00 sop',, - 00.08€'5 00 OTP"5 OGSSE'S un 00"STb'S � rey /pYs 1.! 00"06P'S l3NNVH5 O3SodGad-��- ' l3NNVH70350dOSd-®- 00'56£'5 < 13NNNH79NI151t3f „p- i3NN':H39NI151R3# b�3�` 00"SZb'S i o z y M _ l. JJ GGYS ti A�j'„ i 00'0Eb`S 'r nd 00'SOb'S 00'S£b'S Go atb's 00 On's 3113OHd 13NNVHJ -b H:)V3H i33rOMd 31HOHd 13NNVH: E HJd3a 1a3rOad No11Vls NOIIVIS OOSS 0005 iyDsil 0'.)06 DOSE 000E DOSZ OOOZ C.;)Z 00g1 60:11 00111 OOU 0001 008 009 006 002 0 00'SbE'S 00'8Z£`S 00'O£E'S 00'05£'5 IN ir 00'55£`5 j+ 00'bE£'S J� -2NNVH7 Q3fOdU9d-� / m 13N^!tlH]O350d0Ndt ONNVH79N11517(3" - 13NNVHJ 9NIl.SI%3 -0- 00'S9E'S z 00'SES`Soo.ovvs -t r OO OL£'S OOZVE'S 00'510£'5 A�'.E' 00'bbE'S / 1 00'09£'5 00'9b£'S 00'55£'5 OO"Sb£'S 31130?Jd 13NNVIO - Z H3V1H 311jOad 13NNVHJ - Z HJVIH 1:)IFO d NOTES AND SPECIFICATIONS CONT'D 1. This Plan has been prepared on behalf of the City of Boulder Open Space and Mountain Parks Department (OSMP). • Emergency leak/spill containment and cleanup supplies must be stored onsite prior to the presence of any construction equipment working in live water. Leak/spill containment booms orsimilar must be installed 2. This Plan has been prepared as a 30%Conceptual Design. Only key design elements and specifications are downstream of all construction equipment working in live water. The emergency leak/spill containment supplies provided.This Plan does not provide complete detailed design information and therefore may require clarification must be adequate to contain potential leak or spill from construction equipment onsite. All site employees must and adjustments by the designer and/or OSMP. All design layout,control datum and proposed elevations will require have knowledge of emergency leak/spill response measured. verification by designer and/or OSMP prior to construction operations. Construction operations shall only be completed by firms experienced in stream restoration and specifically heavy equipment operations in sensitive 12. The Plan specifies the use of 5",6"and 9"cobble for use information of the riffles and bank stabilization environments and live water. respectfully.This cobble shall be obtained from onsite sorting of instream material or imported as approved by 05MP 3. South Boulder Creek(SBC),both instream and adjacent lands,are a sensitive environment. Every effort shall 13.All staging areas as well as those depicted herein shall be defined and verified by OSMP prior to disturbance. be made during construction operations to minimize disturbance to the fishery and adjacent environment. All access, Staging areas shall implement appropriate erosion and sediment controls(such as erosion logs or silt fence) Staging and disturbances are strictly limited to that as indicated on the Plan and as approved by OSMP, depending on materials staged. Because existing onsite materials will be reused,use of staging areas 15 expected to be minimal. 4. This Plan requires authorization from the US Army Corps of Engineers(USACE),Colorado Parks and Wildlife (CPW)and City of Boulder(City). This Plan and construction operations are subject to the special conditions and 14.Construction of the riffle-pool-glide sequences require continuous earthwork along the channel cross-section terms of such permits, and profile: 5- Utility locates shall be established by the contractor throughout the project area a minimum of five days prior 15. Design bankfull established at 165 cubic feet per second(ds). to construction start date and updated during the project as needed. Utility Notification Center of Colorado 1-800-922-1987 or 811. TEMPORARY SEDIMENT DAM TYPICAL DETAIL 6. Specific workareas shall be clearly field staked and approved by OSMP priorto construction operations. LAscEx ROCKS WITH ra+crn wm Areas proposed for disturbance and areas of no disturbance shall be clearly marked(guide ropes,flagging or similar), SPACES Will! BE i an ON r7 Paver c Pmw, approved by OSMP and maintained during construction operations. Paan A F— A "Pao r A 91k! B 7. Heavy equipment used as part of the project that was previously working in another stream,river,lake,pond varL or wetland must follow on of the following disinfection practices prior to site mobilization and prior to construction to n MWprevent the spread of New Zealand mud snails and other aquatic hitchhikers into this drainage. • Remove all mud and debris from equipment(tracks,turrets,buckets,drags,teeth,etc.)and spray/soak equipment in a 1.15 solution of Squarquat institutional cleaner and water.Keep equipment moistforat least 70 A • s ear waast + minutes,or • Remove all mud and debris from equipment(tracks,turrets,buckets,drags,teeth,etc.)and spray/soak TYPICAL SECT ON VIEW equipment with water that is greater than 140 degrees F for at least 10 minutes. Clean hand tools,boots and any other equipment that will be used in the water using one of the above options. 8. All construction equipment working in or near the water shall be safe,clean and in exceptional operational condition.All equipment shall be inspected daily for any potential spills/leaks or mechanical problems prior to working in the water. All equipment shall be cleaned of any excess greases/oils and dirt daily prior to water entry, High pressure washing of construction equipment(in pre-approved designated location only)may be necessary. 4r 9. It is the intent of this Plan that within specific work areas,existing instream features(boulder arch structures now ��>� sA•CRM IELCIrr and logs)will be completely removed and materials reused. CRMKCIW[MLWE _ IP"K. ttFAR R>nvecoeeiEJ 10. Construction operations for this work is intended to occur within the live water during low flow conditions. SUBUCAVAM F Rnow nmtLM 11. Appropriate measures to prevent and minimize degradation to onsite and offsite waterways shall be a implemented during construction operations. Increased turbidity will occurduring construction operations SECTION A-A downstream of the project area. 5oecifically the following measures shall be implemented to minimize instream suspended sediment and turbidity. NOTES: • A downstream sediment dam constructed from clean cobble or rock shall be installed across SBC below all L CLEAN NATIVE COBBLE D50=5" construction operations. The sediment dam shall be inspected and maintained as required.(Refer to the 2- THE ENDS OF CHECK DAM SHALL BEA MINIMUM OF 6INCHES HIGHER THAN CENTER OF CHECK Temporary Sediment Dam Typical Detail provided as follows.) DAM. 3. FOR USE AS TEMPORARY CHECK DAMS ONLY AND NOT FOR PERMANENT INSTALLATIONS. I AECOLOGICAL RESOURCES CONSULTANTS,INC CITY OF BOULDER SOUTH BOULDER CREEK 11 5672 JUHLS DRIVE OPEN SPACE AND MOUNTAIN PARKS HABITAT IMPROVEMENT PROJECT NOTES BOULDER,CO 90301 AUGUST 29, 2016