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7.1 MITIGATION MONITORING PROGRAM Hydrology and Water Quality Table 7.1 - continued Timing or Person/ Frequency Monitoring Agency or Impact Mitigation Measure Requirements Responsible' Monitoring= ■ HYDROLOGY AND WATER QUALITY 4.7-1 Proposed structures and facilities 4.7-1(a) The levees protecting the project site should all be Inspection and SJCFCE Prior to SP on the project site could be thoroughly inspected, evaluated, and improved, as necessary, evaluation of and PC inundated by potential flooding prior to any development within the portion of the site improvements. within the 100-year floodplain. currently designated as a 100-year flood zone. The evaluation of the levee should be performed by a certified engineering geologist or registered geotechnical engineer prior to GompWieR approval of the Specific Plan. All recommendations presented for levee design and improvements by the professionals should be implemented following review and approval by the San Joaquin County Flood Control Engineer. The review would be conducted under the FEMA requirements for the "Letter of Map Revision" process. Ow fl4:44d Prlor to the Specific Plan, the applicant should apply for and receive a "Conditional Letter of Map Revision" for proposed levee Improvements. All levee work must be completed and approved and a "Letter of Map Revision" must be Issued prior to any construction within the currently Identified flood zone. 4.7-1(b) Regular inspection and maintenance of the levee should he Inspection and CSD and O (semi- performed to identify and correct any conditions that would maintenance. SJCCDD annually) destabilize the structure. The levee should be inspected semi-annually by the Community Services District (CSD) for the Mountain House New Town. The semi-annual inspections of the levee should specifically document evidence of erosion on the river side of the levee. excessive seepage on the landward slope (particularly at the toc of the slope), rodent burrows, and levee crest subsidence. Identified problems should be corrected immediately by the CSD.