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4 - Wetland Permit #LUR2002-00031, Broadway,i CITY OF 80ULDER Planning and Development Services ~~~~~ 1739 Broadway, Thirct ~loor • P.O. Box 791, 8oulder, CO 80306-0791 ~~ phone 3 03 1141-1 88 0 • fax 303-4413241 • web boulderplandevelop.net Wetland Permit Date Issued: June 27, 2002 Expiration Date: June 26, 2005 (Pursuant to Subsection 9-9-9(e), B.R.C. 1981) Permit Number: LUR2002-00031 Contact Information ' ALEX MAY 1739 BROADWAY P.O. BOX 791 BOULDER, CO 80306 Project Information Location: BROADWAY Legal Description: Description of Work: Wetland Permit for reconstruction of Broadway from University to Pine. Conditions of Approval , The proposed projectlactivity is approved on the basis that it satisfies applicable requirements of Chapter 9-12, "Wetlands Protec6on," Boulder Revised Code 1981. Other wetiand requirements as set forth in Chapter 9-12 which are not specifically outlined in the conditions of approval below remain applicable to this project/activity. , All roadway and bridge reconstruction adivities shall conform to the "City of Boulder Wetland Permit Application for Broadway {SH 93) Reconstruction Project (University Avenue to Pine Street) and Broadway Bridge (STR D-15_BC) at Boulder Creek," prepared by Carter Burgess, Inc., dated May 3, 2002 with the mitigation plan as ammended by letter from Laura Backus of Carter Burgess to Project Manager Alex May, of the City of Boulder, Public Works Department, dated June 3, 2002. , All work adivities in the regulatory wetland and wetland buffer area shall comply with the "City of Boulder WeUands Protection Program Best Management Practices (BMPs) and Revegehation Rules" , Mitigation monitoring and related maintenance of wetland restoration shall be performed for a period of five years after project completion. Special attention should be placed on weed control and successful wetland performance. Annuai monitoring reporls shall be prepared by a qualified wetland consultant and submitted to the Floodplain and Wetlands Management office. The Utilities Division shall guarantee the performance of wetland restoration during the fiv~year mitigation-monitoring period. Permit approval, if not appealed, is finai 14 days after notification of pertnit issuance. Inspections To schedule an inspection, call 303~41-3280 and refer to your permit number (LUR2002-00031). CITYOFBOULDER J~~` ~ T~ ~~ -~~ WETLAND PROJECT ,~L DESCRIPTION F~ PxoaEC'r: Broadway Reconstruction Project Location: Broadway from University to Pine and Broadway Bridge at Boulder Creek ArrLlcnN'r: City of Boulder, Public Works Department Contact Person: Alex May (303-441-3266) DESicN,aTEn WETLnNn: Wetland #8, Boulder Creek Functional Value Ratings: Boulder Creek is designated a significant wetland. The creek corridor is important for storm water and flood conveyance, and community recreation and benefit. Highest functional value ratings are for shoreline anchoring, passive and active recreation, heritage value, fish and wildlife habitat, and food chain support. Additional functional values include ground water rechazge and discharge, flood storage, sediment trapping; and long and short-term nutrient retention and removal. P[toaEC'r/Ac'rrviTV Descttie'rioN: The Broadway Reconstruction Project is made up of two separate proj ects: roadway reconstruction between University Avenue and Pine Street and reconstruction of the Broadway bridge structure over Boulder Creek. The roadway reconstnxction project abuts the bridge reconstruction project to the north and south. Permanent wetland impacts will total 0.008 acres (350 square feet) and temporary wetland impacts will tota10.007 acres (300 square feet) to the Boulder Creek regulatory wetland. The impacts wil] result from the placing of grouted riprap to address streambank erosion, the placing of new stormdrain outlets, and the removal of the old pedestrian/bike path. The temporary impacts will be restored at the location of the impact. All permanent impacts will be mitigated at a 2:1 ratio of mitigated land to impacted wetland area. The mitigation area for perxnanent impacts will primarily be on the north bank of the creek in the area currently occupied by the pedestrian/bicycle path. Bas~s oF ArrxovaL: Reconstruction of roads and the replacement of bridges may be permitted under Section 9-12-8, "Standards for Wetland Permits," Boulder Revised Code 1981 (B.R,C.), if the applicant has demonstrated: Broadway Reconstruction Projeot WeT~nno reo~ecr nescwrrwrv (a) That all adverse impacts on a wetland have been avoided through a reduction in size, scope or density of the project, or through a change in con~guration or design, or that it is not feasible to do so; The existing Broadway bridge structure was identified in the 1980's as being structurally deficient. Replacement of the bridge, accompanying improvements to storm drainage, and improvements to Broadway in the area of the Broadway bridge are necessary and wetland impacts in this area cannot be avoided. (b) That any impact on a wettand has been minimized, will result in minimal impact or impairment to any wetland function, and will not jeopardize the continued existence of habitat for identified plant, animal or other wildlife species; The direct impact to the Boulder Creek regulatory wetland will be minimized, resulting in 300 square feet of temporary construction impact and 350 square feet of permanent construction impact. The temporary impacts will be mitigated at the site of the impact and permanent impacts will be mitigated at a 2:1 ratio mainly west of Broadway on the north bank. No habitat far federally listed Threatened and Endangered Species or city of Boulder species of concern will be impacted. Habitat for the threatened Ute Ladies' Tresses Orchid (Spiranthes diluvialis) or Preble's Meadow Jumping Mouse (Zapus hudsonius preblei) does not exist at the site. Wetland functional value ratings will not be adversely affected as a result of this activity. (c) That the project is in the public interest, considering the public need, the functional values of the wetland that may be affected, the extent and permanence of any adverse effects and the cumulative adverse effects of past activities ou the wetland, and the uniqueness and scarcity of the wetland that may be affected. Reconstruction of the Broadway Bridge is essential in maintaining the primary arterial route and state highway that Broadway provides. Direct impacts to the Boulder Creek regulatory wetland are the minimum necessary to provide for the necessary replacement and upgrade of critical public infrastructure in the downtown area. The impacted regulatory wetland is not unique and will be restored to pre-construction conditions to ensure that current functional values are maintained. The wetland will not be adversely affected by the proposed improvements. Considering the standards outlined under Section 9-12-8, staff finds that the proposed project meets the intent of 9-12-1, B.R.C. 2 Broadway Reconshuction Project WETLAND PROJECT DESCRIPTION . . . - - - - . . . . . SROADWAY'RECON518UCTIONPROJECPIACATiON . . . . . . . . . . eua. }~{~,~j3-??T .LEGEND. . ~V ~~ ' YeIM1 RmES ' ' ~Alkfltl ' ~(Q~ ~~{' •!V PIY~O@ Blee ICenlrpe ~11~1~15~ - ' ~ ~9uueY Pdypof _j {!Ci . Bteams a olkSef NC0.EEN . ~.: C0.EE1f-IYT !.' iIICN - . ~9rnenHO Pan We1mYS" ' ~ ~ ~CIM umlh . . . . . ~~~ ~ IIIILJ;I__111.1°` • . • • • ~~i . . . ~~, . . . . . ~ . . . . . 3 Broadway Reconstrucfion Project WETI.AND PROJEGT DESCRIPTION