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Underground Storage Tank Excavation <br /> and Soil Sampling Report <br /> PG&E's Stockton Service Center, <br /> 4040 West Lane, Stockton, CA <br /> Page 3 <br /> Tank and Product Line Backfill Methodology <br /> The former tank area and product line area has been backfilled with clean fill material by <br /> P G &E Fill material was placed in the excavation in 12-16 inch lifts, and compacted between <br /> lifts <br /> After the tank excavation area was backfilled Pacific Gas and Electric decided to remove an <br /> additional two feet from the former sump area and to remove apparent surface contamination <br /> which was noted adjacent to the tank area (to the east of the excavation and around the electric <br /> box) All topsoil and gravel down to approximately 12 inches was removed east and north of <br /> the tank excavation and product lines The area was then paved with asphalt The graded <br /> material was stockpiled with the "dirty" soils mentioned above and will be disposed of <br /> appropriately under the same disposal plan <br /> If you have any questions or comments, please contact me at our Escalon office <br /> Respectfully, <br /> RESNA Industries, Inc <br /> 4'�- <br /> Lois Frantz <br /> Staff Geologist <br /> '1J7 <br /> Gregory P Stahl <br /> CA Registered Geologist No 5023 <br /> LF/gk <br /> Attachments <br /> REPORTS%SSR-0393 FNL <br />