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17. The existing septic tank and leach field to the existing house on Lot 7 shall be abandoned per Alameda County Health Department regulations. Any existing well may be used for landscape purposes or shall be abandoned per Zone 7 standards. If an existing well is used for landscape purposes, the home that is served by the well is required to have a backflow device on the domestic water service. The backflow device shall be re-certified each year. 18. The perimeter of all building foundations shall be designed with subdrains. The subdrains shall have a cleanout installed at the beginning of the pipe. The bottom of the pipe shall terminate in a storm drain or other storm drain outfall subject to the approval of the City Engineer. The project developer's engineer shall submit a final subdrain location map to the City Engineer prior to acceptance of the public improvements for this development. It shall be the responsibility of the homeowner to relocate the subdrains if the subdrains are encountered during the excavation of a pool or other subsurface structure. All owners within the subdivision shall receive notice of the presence of these subdrains. The City Attorney shall approve said notice. 19. Unless otherwise approved by the City Engineer, all fill and cut slopes shall be graded at a 3:1 (horizontal:vertical) slope. There shall be a minimum, 2-foot wide "overbuild" area between the lot line(s) and the slope's hinge point. This change shall be shown on the tentative subdivision map and/or grading plan to the satisfaction of the City Engineer and shall be subject to review/ approval by the Planning Commission. 20. The project developer shall comply with the recommendations of the following geotechnical reports: • "Landslide Investigation, Austin Property, Foothill Road, Pleasanton, California", prepared for Austin and Briggs Investments by Berlogar Geotechnical Consultants, dated July 18, 2002. • "Supplemental Landslide Investigation, Austin Property, Foothill Road, Pleasanton, California", prepared for Austin and Briggs Investments by Berlogar Geotechnical Consultants, dated September 24, 2003. • "Geologic/Geotechnic Investigation, Proposed Eight-Lot Meadowlark Development, Foothill Road, Pleasanton, California", prepared for Austin and Briggs Investments by Berlogar Geotechnical Consultants, dated May 25, 2006. • 'Laboratory Corrosivity Tests, Proposed Eight-Lot Meadowlark Property, Austin Property, Pleasanton, California", prepared for Charles Austin by Berlogar Geotechnical Consultants, dated June 15, 2006. • The peer-review comment letters from Dale Marcum of Cotton, Shires & Associates to Marion Pavan dated July 12, 2006. 7