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NOTICE OF PREPARATION - City of Manteca

NOTICE OF PREPARATION - City of Manteca

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Mitigation Measure 8.1: The developer will comply with the <strong>City</strong> <strong>of</strong> <strong>Manteca</strong>’s Storm Drain Master Plan.<br />

Initial Study-07-10<br />

Compliance with the Storm Drain Master Plan requires treatment <strong>of</strong> run<strong>of</strong>f for water quality and implementation <strong>of</strong> postconstruction<br />

BMPs to help mitigate water quality degradation and make this impact less than significant.<br />

e).The project site is currently vacant and undeveloped and contains permeable soils. The proposed project would<br />

substantially increase the amount <strong>of</strong> impermeable surfaces on the project site through development <strong>of</strong> the proposed project.<br />

The project would contribute to increased sources <strong>of</strong> polluted run<strong>of</strong>f during wet weather conditions from urban pollutants that<br />

are collected and transported to local drainage infrastructure, including trash, debris, rubber, greases, oils, and other<br />

vehicular fluids that leak on surface parking areas. This impact is potentially significant. The applicant will be required to<br />

design and construct onsite drainage facilities to <strong>City</strong> standards, and connect to the <strong>City</strong> storm drain system.<br />

f) The proposed project would not otherwise substantially degrade water quality. Implementation <strong>of</strong> Mitigation Measure 7.2,<br />

requiring the project applicant to conform to all applicable water quality standards and waste discharge requirements relative<br />

to construction activities and run<strong>of</strong>f from roadways or other onsite facilities, will ensure that this impact is less than<br />

significant. No other potential sources would contribute to water quality degradation.<br />

g-h). The proposed project site is not located within a 100-year flood zone but is protected by a levee. Should the levee<br />

break, flooding is projected to be limited to one foot depth. There would be less than significant impacts.<br />

i) The project site is not located near any significantly sized enclosed body <strong>of</strong> water or coastal area and is therefore not<br />

susceptible to a seiche or tsunami. The site is not located at the foot <strong>of</strong> any significant topographical feature with the<br />

potential to be subject to a mudflow. There would be no impact.<br />

Initial Study_Terra Ranch<br />

IS 07-10 18

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