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BACKFILL EXCAVATION CERTIFICATE <br /> Project Location USPS Stockton VMF, 3131 Arch Road, Stockton, CA <br /> Owner US Postal Service Phone No. (415) 742-6337 <br /> Contractor GHH Engineering, Inc. Phone No.(916)723-7645 License No. #537901 <br /> INDICATE METHOD OF BACKFILL QUALITY ASSURANCE <br /> 1. Submission of Soil Engineer's Compaction Report within 30 days of project completion, or <br /> x 2. Submission of verification, e.g., load ticket, within 30 days of project completion that one of the following materials was <br /> placed in the excavation in 12" lifts: <br /> _2L A. Pea gravel—smooth, rounded material not more than one-half(1/2) inch in diameter <br /> B. Crushed rock—self-compacting material not more than three-quartets (3/4) inch in cross sectional <br /> measurement. (Use of crushed rock will not be permitted for backfill if contact will be made between the <br /> backfill material and tanks/pipes made of poly resin glass or similar materials.) <br /> DECLARATION <br /> I hereby certify that a Soil Engineer's Compaction Report will be submitted within 30 days of roject completion, or submission of <br /> verification that the select material described above will be placed at a minimum of five (5� cubic yards per 1000 gallon tank <br /> displacement and that the entire excavation will be backfilled and compacted to insure compliance with the Uniform Building Code <br /> Appendix Chapter 70. <br /> * Gary H. Hall <br /> Name not <br /> * Pr si 1 <br /> Print) <br /> * <br /> tgnature <br /> * Shall be the responsible managing employee on the license or authorized agent. <br />