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3.0 Environmental Impact Checklist <br /> 3.9 HYDROLOGY AND WATER QUALITY <br /> Les.•ttla', <br /> -_ mgrsil3COnt SIgn.ificarrr Less-Bon. <br /> 'do+atci Ilse p .- rrnpoctwayts llgniticunt No tm pot.l <br /> #rnpo t I'Aii#gtotinrh ortpael <br /> EnsForparG O <br /> a) Violate any water quality standards or waste ® ❑ <br /> discharge requirements? <br /> b) Substantially deplete groundwater supplies <br /> or interfere substantially with groundwater <br /> recharge such that there would be a net deficit <br /> in aquifer volume or a lowering of the local ❑ ❑ I ❑ <br /> groundwater table level (e.g., the production <br /> rate of existing nearby wells would drop to a <br /> level that would not support existing land uses <br /> or planned uses for which permits have been <br /> granted)? <br /> -- — _J___—__:—I - : —! <br /> c) Substantially alter the existing drainage <br /> I pattern of the site or area,including through <br /> the alteration of the course of a stream or river, ❑ tf ❑ 0 <br /> in a manner that would result in substantial ' <br /> erosion or siltation on or off site? If, <br /> d) Substantially alter the existing drainage I i <br /> pattern of the site or area,including through <br /> the alteration of the course of a stream or river, ❑ ® ❑ <br /> or substantially increase the rate or amount of <br /> surface runoff in a manner that would result in <br /> flooding on or off site? <br /> ' �, <br /> e) Create or contribute runoff water that would 3 <br /> exceed the capacity of existing or planned + I <br /> stormwater drainage systems or provide ❑ ® ❑ 0 <br /> substantial additional sources of polluted <br /> L _______1_ ______1 <br /> runoff? <br /> 1) Otherwise substantially degrade water <br /> quality? i 0 ® 0 0 , <br /> 1 g) Place housing within a 100-year flood hazard <br /> area as mapped on a federal Flood Hazard 0 0 0 [ Z <br /> Boundary or Flood Insurance Rate Map or other <br /> flood hazard delineation map? <br /> h) Place within a 100-year flood hazard area <br /> structures that would impede or redirect flood 0 0 o <br /> flows? <br /> i) Expose people or structures to a significant risk r <br /> 1 of loss,injury,or death involving flooding, ❑ I ❑ I ❑ <br /> including flooding as a result of the failure of a <br /> levee or dam? _ __ _1 <br /> { j) Cause inundation by seiche,tsunami, or ❑ � ❑ I . - I <br /> Imudflow? I <br /> La Palma Subdivision Project <br /> Final Initial Study/Mitigated Negative Declaration <br /> 41 <br />