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12 Exhibits
City of Pleasanton
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2007
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022007
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12 Exhibits
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Last modified
2/15/2007 3:42:28 PM
Creation date
2/15/2007 3:32:05 PM
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CITY CLERK
CITY CLERK - TYPE
STAFF REPORTS
DOCUMENT DATE
2/20/2007
DESTRUCT DATE
15 Y
DOCUMENT NO
12 Exhibits
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<br />Pleasanton Gateway Environmental Checklist <br /> <br /> Less Than <br /> Potentially SigniJ1cant Less Than <br /> Significant With Mitigation Significant No <br />Issues (Continued) Impact Incorporated Impact Impact <br />C) Substantially alter the existing drainage pattern of the D D [X] D <br /> site or area, including through the alteration of the <br /> course of a stream or river, in a manner, which would <br /> result in substantial erosion or siltation on- or off-site? <br />d) Substantially alter the existing drainage pattern of the D D [X] D <br /> site or area, including through the alteration of the <br /> course of a stream or river, or substantially increase <br /> the rate or amount of surface runoff in a manner, <br /> which would result in t100ding on- or off-site? <br />e) Create or contribute runoff water which would exceed D D [K] D <br /> the capacity of existing or planned stormwater drain- <br /> age systems or provide substantial additional sources <br /> of polluted runoff? <br />f) Otherwise substantially degrade water quality? D D [K] D <br />g) Place housing within a lOa-year t100d hazard area as D D D [K] <br /> mapped on a federal Flood Hazard Boundary or Flood <br /> Insurance Rate Map or other tlood hazard delineation <br /> map? <br />h) Place within a lOa-year t100d hazard area structures, D D D [K] <br /> which would impede or redirect tlood t1ows? <br />i) Expose people or structures to a significant risk of loss, D D D [K] <br /> injury or death involving t1ooding, including tlooding <br /> as a result of the failure ofa levee or dam? <br />j) Inundation by seiche, tsunami, or mudtlow? D D D [K] <br /> <br />Discussion <br /> <br />a,e,f) The landscape areas facing Stanley Boulevard, Bernal Avenue, and Nevada Court are designed <br />and graded to function as bio-retention swales. The paved areas of the site are graded to drain <br />towards the bio-retention swales and then to catch basins within the swales before entering the <br />City's storm drain system. <br /> <br />The project will be required through the building permit and construction process to incorporate <br />best management practices for discharges resulting from this development. The City has adopted <br />the most recent Regional Water Quality Control Board stormwater discharge requirements re- <br /> <br />Pleasanton Gateway Initial Study <br /> <br />Page 25 of 37 <br /> <br />November 8, 2006 <br />
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