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BACKFILL EXCAVATION CERTIFICATE <br /> Project Location: Union Pacific Railroad-Stockton Yard, 833 E. 8th Street, Stockton, CA <br /> Owner Union Pacific Railroad Phone No: 916/789-5184 - Jim Diel <br /> Contractor: United Pumping Service, Inc. Phone No: 626/961-9326 <br /> License No: 617639 Class A, ASB, HAz, C21, C31, C42 exp. 4/30/15 <br /> INDICATE METHOD OF BACKFILL QUALITY ASSURANCE <br /> x 1. Submission of Soil Engineer's Compaction Report within 30 days of project <br /> completion, or <br /> 2. Submission of verification, e.g., load ticket, within 30 days of project completion that <br /> one of the following materials was placed in the excavation in 12" lifts: <br /> A. Pea gravel--smooth, rounded material not more than one-half(1/2) <br /> inch in diameter <br /> B. Crushed rock--self-compacting material not more than three-quarters <br /> (3/4) inch in cross sectional measurement. (Use of crushed rock will <br /> 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 <br /> materials.) <br /> DECLARATION <br /> I hereby certify that a Soil Engineer's Compaction Report will be submitted within 30 days <br /> of project completion, or submission of verification that the select material described above <br /> will be placed at a minimum of five (5) cubic yards per 1000 gallon tank displacement and <br /> that the entire excavation will be backfilled and compacted to insure compliance with the <br /> Uniform Building Code Appendix Chapter 70. <br /> *Name <br /> 0- Giti -elt C Cc, rr <br /> � ) U\ j� nn <br /> Title <br /> n <br /> zz��/ <br /> Signatur <br /> *Shall be the responsible managing employee on the license or authorized agent. <br />