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City of Santa Ana <br />7-Eleven Convenience Store and Service Station Project <br />Mitigation Monitoring and Reporting Program <br />Table 1 (cont.): 7-Eleven Convenience Store and Service Station Project Mitigation Monitoring and Reporting Program <br />Responsible for <br />Verification of Completion <br />Mitigation Measures <br />Method of Verification Timing of Verification <br />Verification <br />Date <br />Initial <br />used. Passive pressure can be computed using an allowable <br />lateral pressure of 300 psf per foot of depth below the <br />ground surface for level ground conditions. Reductions for <br />sloping ground shall be made. The passive pressure can be <br />increased by one-third when considering the total of all <br />loads, including wind or seismic forces. The upper 1 foot of <br />soil shall not be relied on for passive support unless the <br />ground is covered with pavements or slabs. <br />• Foundation Plan Review: A Geotechnical Engineer shall <br />review the foundation plans to ascertain that the intent of <br />the recommendations in this report has been implemented <br />and that revised recommendations are not necessary as a <br />result of changes after this report was completed. <br />• Foundation Excavation Observations: A representative <br />working under direct supervision of the Geotechnical <br />Engineer shall observe the foundation excavations prior to <br />forming or placing reinforcing steel. <br />MM GEO-3: Slabs -On -Grade <br />Review and approval of <br />Prior to and during <br />City of Santa Ana <br />• Interior Slabs on Grade: The top 24 inches of material below <br />construction plans and <br />construction <br />interior concrete slabs -on -grade shall have an expansion <br />conduct on -site <br />index of 20 or less. The project structural engineer shall <br />inspections <br />design the interior concrete slabs -on -grade floor. However, <br />we recommend a minimum thickness of 5 inches. <br />- Avapor barrier shall be placed beneath slabs where <br />moisture sensitive floor coverings will be installed. If plastic <br />is used, a minimum 10-mil is recommended. The plastic <br />shall comply with ASTM E1745. Installation shall comply <br />with ASTM E1643. Current construction practice typically <br />includes placement of a 2-inch thick sand cushion between <br />the bottom of the concrete slab and the moisture vapor <br />retarder/barrier. This cushion can provide some protection <br />FirstCarbon Solutions <br />YI\PubllcalIoi(PN1N)\IXi27\039PN1\MMRP\0iPOMl City of5anta Ana ]-Eleaen MMRP. dou <br />