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BACKFILL EXCAVATION CERTIFICATE <br /> Project Location USPS Stockton V14F 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 A Haz. <br /> INDICATE METHOD OF BACKFILL QUALITY ASSURANCE <br /> _ 1. Submission of Soil Engineer's Compaction Report within 30 days of project completion, or <br /> got 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 /> _ A. Pea gravel--smooth, rounded material not more than one-half(1/2) inch in diameter <br /> }at B. Crushed rock--self-compacting material not more than three-quarters (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 ofpproject 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 ( tint) <br /> * Presi ent <br /> it [) <br /> * J� <br /> ignature <br /> * Shall be the responsible managing employee on the license or authorized agent. <br /> / I <br />