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. . . 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. All materials transported off-site shall either be sufficiently watered or securely covered to prevent excessive amounts of dust. The amount of area disturbed by clearing and earthwork activities shall be minimized at all times. To the extent feasible, equipment engines shall be maintained in good condition and in proper tune according to manufacturer's specifications. To the extent feasible, gasoline powered equipment shall be used for on-site and off- site construction activities. Prior to issuance of a grading permit, the project applicant shall provide proof of coverage under an NPDES General Construction Activity Storm Water Permit, which includes a copy of the project number and two copies of the Storm Water Pollution Prevention Plan. Foundations for two-story dwellings shall be supported entirely by a homogenous layer of certified compacted fill not less than five feet beyond the perimeter of the proposed building footprint. The project shall comply with the bearing capacity, lateral design, concrete slab on- grade, asphalt concrete and seismic coefficient design recommendations provided in the geotechnical report prepared for the project by Nunez Engineering, in May 2002. Prior to grading, existing vegetation, trash, surface structures and debris shall be removed and disposed off-site as a legal dumpsite. Any existing utility lines or other subsurface structures, which are not to be utilized, should be removed, destroyed or abandoned in compliance with current governmental regulations. Excavated soil may be used as fill and backfill provided that it is clean and free of debris. All areas where certified compacted fill is to be placed shall first be cleaned of structures, concrete, asphalt concrete, vegetation and debris materials. The excavated bottoms of all fill soil excavations shall be observed and approved by the Soil Engineer and the City Building Inspector before backfill with certified compacted fill begins. The soils to be used for compactions should be mixed and watered to obtain uniform optimum moisture content. The soils shall be placed in a layer not thicker that eight inches and Mechanically compacted or wheel-rolled to a minimum relative compaction of 90-percent. Prior to demolition of any structures on the project site, an asbestos and lead paint survey shall be prepared to determine the presence of asbestos building materials and lead paint. The asbestos/lead paint survey shall be submitted to the City's Environmental Coordinator for review. EXHIBIT "A" 31A-87