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City of Pleasanton—Hidden Canyon Residences and Preserve <br />Geology, Soils, and Seismicity Draft EIR <br /> <br /> <br />3.6-22 FirstCarbon Solutions <br /> https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/3 - Draft EIR/21480016 Sec03-06 Geology.docx <br />for roads, installation of infrastructure, and creation of building pads. Mitigation <br />measures identified by the site engineering studies shall be incorporated into the <br />project design. <br />Program 5.4 Require technical review and analysis of geotechnical studies by a qualified consulting <br />Geotechnical Engineer reporting to the City. Incorporate the recommendations of the <br />City ’s consulting engineer into the project design. <br />Program 5.5 Discourage development in areas with a high risk of geologic hazards as identified by <br />a California licensed engineering geologist representing the City. Allow development <br />only when geologic and soils investigations demonstrate that hazards can be <br />mitigated by accepted engineering and construction techniques. Mitigation measures <br />identified by the investigations shall be incorporated into the project design and <br />subject to approval by the City ’s reviewing geologist/engineer. <br />Policy 6 Restrict new development of sites with structures intended for human occupancy in <br />any landslide-prone or unstable area. <br />Program 6.1 Prohibit new development of sites with structures intended for human occupancy in <br />any landslide-prone areas unless the landslide risk can be eliminated. Permit <br />development in landslide prone areas only when sites can be shown to be stable <br />during adverse conditions such as saturated soils, ground shaking, and during grading <br />of the site for roads, installation of infrastructure, and creation of building pads. <br />Engineering studies shall demonstrate that structures in landslide prone areas would <br />sustain no more damage due to slope instabilities than damage sustained by a similar <br />building in the Pleasanton Planning Area constructed to current CBC standards and <br />located on soils with a low susceptibility to failure when exposed to moderate ground <br />shaking. <br />Program 6.2 Require developers to include drainage, erosion, and landslide mitigation measures <br />to reduce landslide potential. <br />Program 6.3 Design irrigation systems to minimize the potential for soil saturation, excessive <br />runoff, and other factors deemed to contribute to slope instability. <br />Program 6.6 In unstable areas, prohibit major grading where existing slopes are 25 percent or <br />greater. <br />Pleasanton Municipal Code <br />Section 9.14 of the Municipal Code, known as the Stormwater Management and Discharge Control <br />Ordinance, establishes requirements for eliminating non-stormwater discharges to the municipal <br />storm sewer, controlling the discharge to municipal storm sewers, separating storm sewers from <br />spills, dumping or disposal of materials other than stormwater, and reducing pollutants in <br />stormwater discharges to the maximum extent practicable.