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• During the removal of the tanks, representative(s) of San Joaquin County <br /> Environmental Health Department and Tracy Fire Department were on-site to <br /> observe and document activities being performed by Wright Environmental <br /> Services. <br /> • The tank was lifted by the backhoe on site and placed on plastic for cleaning off <br /> the exterior and identification. Then the tank and piping was placed on a <br /> transport trailer provided by Wright,for inspection by the County of San Joaquin <br /> Environmental Health Department Inspector prior to transport. <br /> • All excavated surfaces were inspected for evidence of leakage. Evidence of <br /> contamination was not found by visual observation in the former tank resting <br /> areas or sidewalls of the excavation pit area. <br /> • Tank, and Piping were removed and disposed of as required by County of San <br /> Joaquin Environmental Health Department(SJC/EHD) and"Procedural Guide for <br /> the Removal of Underground Storage Tanks" and other applicable regulations. <br /> • A backhoe was used to take soil samples under the supervision of SJC/EHD <br /> personnel by a third party sampler from GeoAnalytical. The samples were taken <br /> near the end of and beneath the tank. A soil sample was also taken from the <br /> former pipeline area. Soil samples were taken from the excavated soil stockpile <br /> and groundwater(GW) samples were also taken. <br /> • Samples were placed in clean brass sleeves with Teflon tape placed over each <br /> end. The sleeves were then closed with plastic caps over the Teflon Tape and <br /> tagged with identifying seals for time, location and depth and placed in an ice <br /> chest for delivery to GeoAnalytical Laboratory, along with the GW samples <br /> taken. <br /> Samples were then transported to GeoAnalytical Laboratory under proper Chain- <br /> of-Custody for analytical testing. <br /> The excavation was backfilled with"other" native soil onsite, properly moistened, <br /> and compacted,to within Y below grade (BG). No fill material was placed, <br /> spread,or compacted during unfavorable weather conditions. <br /> Excavated soil stockpile was covered with plastic and the site was secured by <br /> temporary chain linked fencing for protection and possible pedestrian traffic. <br /> • The excavation site was enclosed within a temporary chain link fence. The site <br /> was cleaned and secured. <br />