Laserfiche WebLink
City of Santa Ana 7-Eleven Convenience Store and Service Station Project Mitigation Monitoring and Reporting Program FirstCarbon Solutions 7 Y:\Publications\Client (PN-JN)\0327\03270041\MMRP\03270041 City of Santa Ana 7-Eleven MMRP.docx Table 1 (cont.): 7-Eleven Convenience Store and Service Station Project Mitigation Monitoring and Reporting Program Mitigation Measures Method of Verification Timing of Verification Responsible for Verification Verification of Completion Date Initial • Braced Shoring System: For braced shoring above the groundwater level, a uniform rectangular pressure distribution shall be used from top to bottom of the shoring equivalent to the following, Bracing: 30H pounds per square foot (psf)/feet where H is the depth of the excavation, in feet. The earth pressures indicated above do not include a safety factor; therefore, the shoring design shall include an appropriate safety factor for the overall performance of the system. • Surface Drainage: Final surface grades around structures shall be designed to collect and direct surface water away from the structure and toward appropriate drainage facilities. The ground around the structure shall be graded so that surface water flows rapidly away from the structure without ponding. In general, we recommend that the ground adjacent to the structure slope away at a gradient of at least 2 percent. Densely vegetated areas where runoff can be impaired shall have a minimum gradient of at least 5 percent within the first 5 feet from the structure. Roof gutters with downspouts that discharge directly into a closed drainage system are recommended on structures. Drainage patterns established at the time of fine grading shall be maintained throughout the life of the proposed structures. Site irrigation shall be limited to the minimum necessary to sustain landscape growth. Shall excessive irrigation, impaired drainage, or unusually high rainfall occur, saturated zones of perched groundwater can develop. • Grading Plan Review: A Geotechnical Engineer shall review the grading plans and earthwork specifications to ascertain whether the intent of the recommendations contained in this report have been implemented, and that no revised recommendations are needed due to changes in the development scheme. 1-21