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City of Pleasanton | El Charro Road Precise Roadway Alignment <br />TASK 7 - ENVIRONMENTAL AND <br />PERMITTING CONSTRAINTS SCREENING <br />LEAD FIRM: ICF <br />(4387.'98.3,0; <br />ICF will conduct a planning-level environmental <br />constraints screening analysis identifying preliminary <br />environmental considerations for each alignment <br />alternative under evaluation. The screening will rely on <br />readily available desktop sources and does not include <br />XIGLRMGEP EREP]WMW QSHIPMRK SV ǰIPH WYVZI]W EX XLMW <br />stage. The primary objectives are twofold: identify any <br />critical resources that may require design avoidance <br />ERH XLIVIJSVI MRDZYIRGI EPMKRQIRX WIPIGXMSR ERH <br />provide a comparative assessment of environmental <br />constraints across the alternatives. <br />ICF’s screening will address the following resource areas: <br />agricultural farmlands; biological and aquatic resources <br />(including land cover mapping, special-status species <br />occurrences, critical habitat, wetlands and waters, <br />sensitive vegetative communities, and conservation <br />areas); cultural resources (including a cultural resource <br />records search, a Sacred Lands search and NAHC list <br />review; geology and seismicity including fault crossings, <br />JEYPX ^SRIW ERH PERHWPMHI WYWGITXMFMPMX]  LE^EVHSYW <br />materials and waste sites through DTSC EnviroStor and <br />SWRCB GeoTracker database searches within 100 feet <br />and 0.25 mile of each alternative; hydrology and water <br />VIWSYVGIW MRGPYHMRK +*2& DZSSHTPEMR QETTMRK  PERH <br />YWI MRGPYHMRK KIRIVEP TPER HIWMKREXMSRW ERH ^SRMRK  <br />mineral resources based on state mapping; noise and <br />vibration sensitive receptors; and parks, recreation, and <br />STIRWTEGI0;[MPPGSRXVMFYXIMHIRXMǰGEXMSRSJQENSV <br />utilities and public service facilities within the potential <br />alignment footprints. <br />.REHHMXMSRXSGSRWXVEMRXMHIRXMǰGEXMSR.(+[MPPMHIRXMJ] <br />the likely environmental review and permits required <br />JSVIEGLEPXIVREXMZIYRHIV(*6&3*5&IGXMSR <br />Section 401, and other applicable federal and state <br />IRZMVSRQIRXEP VIKYPEXMSRW ERH [MPP DZEK ER] MWWYIW <br />where early agency outreach would be strategically <br />FIRIǰGMEPTVMSVXSEPMKRQIRXWIPIGXMSR <br />Deliverables &HQMRMWXVEXMZI HVEJX HVEJX ERH ǰREP <br />Environmental Constraints Screening Memorandum. <br />TASK 8 - UTILITY, DRAINAGE, AND RIGHT- <br />OF-WAY CONSIDERATIONS <br />1*&)+.720; <br />CONTRIBUTING: S&W, RADIUS, AR/WS <br />0; [MPP MHIRXMJ] QENSV YXMPMX] GSRDZMGXW ERH EWWIWW <br />drainage patterns and stormwater considerations for <br />each alignment alternative. With nearly 30 years of <br />project history in this corridor, K+W brings existing record <br />VIWIEVGLEWFYMPXORS[PIHKIERHǰIPHJEQMPMEVMX]XLEX <br />no other team will have. <br />Where utility, drainage, or right-of-way considerations <br />require a higher level of engineering scrutiny than <br />standard planning-level assumptions can support, the <br />XIEQ[MPPDZEKXLSWIMXIQWI\TPMGMXP]WSXLI(MX]GERQEOI <br />informed decisions about where additional analysis is <br />warranted before alignment selection. <br />The corridor presents a demanding concentration <br />of known utility constraints including Zone 7 water <br />transmission mains, well and treatment facilities, cross- <br />lake subsurface infrastructure, overhead power lines <br />through the chain of lakes segment, and high-voltage <br />XVERWQMWWMSRPMRIWTEVEPPIPXSXLI9RMSR5EGMǰGPMRIW0; <br />will initiate early coordination with Zone 7, PG&E, and <br />SXLIVYXMPMX]TVSZMHIVWXSGSRǰVQPSGEXMSRWYRHIVWXERH <br />any future planned utility improvement projects in the <br />area, and establish relocation scope. <br />XSVQ[EXIV QEREKIQIRX MW E WMKRMǰGERX GSRWXVEMRX <br />that must be resolved during the initial portion of this <br />project. The corridor is subject to MRP 3 Provisions C.3 <br />and C.3.g, and a corridor-wide low impact development <br />treatment strategy must be developed as part of this <br />study rather than deferred to subsequent phases. <br />A critical early question is whether there is adequate <br />elevation to discharge stormwater to the Arroyo Mocho <br />via gravity along the full corridor length. We anticipate <br />EPS[TSMRXRIEVXLI9RMSR5EGMǰGVEMPVSEHGVSWWMRKQE] <br />require a storm drain pump station. <br />Schaaf & Wheeler will review and selectively modify <br />I\MWXMRKDZSSHQSHIPWXSEWWIWWHVEMREKIERHDZSSHTPEMR <br />impacts for each alternative and will evaluate Arroyo <br />Mocho’s hydraulic capacity to accept additional project <br />discharge in coordination with Zone 7. <br />Page 72 of 443