Laserfiche WebLink
3. Environmental Checklist <br />3.11. Hydrology and Water Quality <br />Would the Project: <br />a) Violate any water quality standards or waste <br />❑ <br />© <br />® <br />❑ <br />discharge requirements or otherwise substantially <br />degrade surface or ground water quality? <br />b) Substantially decrease groundwater supplies or <br />❑ <br />❑ <br />interfere substantially with groundwater recharge <br />such that the project may impede sustainable <br />groundwater management of the basin? <br />c) Substantially alter the existing drainage pattern <br />❑ <br />❑ <br />of the site or area, including through the alteration of <br />the course of a stream or river or through the <br />addition of impervious surfaces, in a manner which <br />would: <br />i. result in a substantial erosion or siltation on- or <br />❑ <br />❑ <br />❑ <br />off -site; <br />ii. substantially increase the rate or amount of <br />❑ <br />❑ <br />❑ <br />surface runoff in a manner which would result in <br />flooding on- or offsite; <br />iii. create or contribute runoff water which would <br />❑1 <br />❑ <br />❑ <br />exceed the capacity of existing or planned <br />stormwater drainage systems or provide <br />substantial additional sources of polluted runoff; <br />or <br />iv. impede or redirect flood flows? <br />❑ <br />❑ <br />d) In flood hazard, tsunami, or seiche zones, risk ❑ ❑ ® ❑ <br />release of pollutants due to project inundation? <br />e) Conflict with or obstruct implementation of a ❑ ❑ ❑ <br />water quality control plan or sustainable <br />groundwater management plan? <br />Discussion <br />a) Violate water quality standards: The Project site, situated in the San Francisco Bay basin within the <br />South Bay Basin watershed, necessitates construction activities such as excavation and grading, <br />which may dislodge soil particles. If not managed properly, these soil particles could be washed into <br />receiving waters, potentially causing sedimentation and impacting water quality. Consequently, the <br />Project requires coverage under the Statewide Construction General Stormwater Permit.37 This entails <br />37 California State Water Resources Control Board. 2022. National Pollutant Discharge Elimination System General Permit for Stormwater <br />Discharges Associated with Construction and Land Disturbance Activities. Order WQ 2022-0057-DWQ NPDES No. CAS000002. <br />San Leandro Treatment Wetland <br />IS/MND <br />