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Ms Margaret Logono <br /> +� August 30, 2001 <br /> Page 2 <br /> 1.2 May 6, 1999 Stockpile Sampling <br /> Under the direction of the PHD/EHD, two soil samples were collected from the <br /> bottom of the cavity,one on each end of the former UST (W1-16, E1-16) These <br /> two soil samples were collected approximately three feet deeper than the <br /> excavation bottom at a depth of approximately 16 feet below ground surface (bgs) <br /> The two soil samples were collected from the backhoe bucket per approval and <br /> under supervision of Ms Lett>tia.Briggs (PHD/EHD) In the eastern portion of <br /> the excavation, noticeable discoloration was evident on the sldewalls and the <br /> excavation bottom <br /> Approximately 280 cubic yards of soil were excavated from the UST cavity and <br /> was stockpiled on plastic on site PHD/EHD stockpile soil sample requirements, <br /> as verbally communicated from PHM/EHD to BC on May 6, 1999, were as <br /> follows two samples per 50 cubic yards to be composlted in the laboratory to one <br /> sample for sort slated for backfilling into the excavation, or four samples per 100 <br /> cubic yards to be composlted in the laboratory to one sample for material slated <br /> for landfill disposal Per Mr Terry Tarditi,none of the stockpile soil was slated <br /> for backfill material The stockpile was segregated into two piles, one larger pile <br /> approximately 16,feet wide by 80 feet long and 4 feet tall, and one smaller pile <br /> approximately 16 feet wide by 30 feet long by 5 feet tall A total of eight samples <br /> to be composlted into two samples were collected from the larger stockpile, <br /> samples SP-1, SP,2, SP-3, and SP-4 were composlted i1 the laboratory into one <br /> sample, and samples SP-5, SP-6, SP-7, and SP-8 were composlted in the laboratory <br /> into one sample Three samples were collected from the smaller stockpile and <br /> were composlted in the laboratory into one sample (SP-9, SP-10, and SP-11) All <br /> sampling was observed by PI D/EHD <br /> 1.3 Over-excavation and May 21, 1999 Stockpile Sampling <br /> Over-excavation of the visibly impacted soli was conducted between May 7 and <br /> May 20, 1999 The over-excavated material was segregated from the previously <br /> stockpiled material for sampling purposes Six soli samples were collected and <br /> composlted by the laboratory into three soil samples Table 1 summarizes all of <br /> the stockpile soil sample analytical results <br /> P 1160001162711Diesel Tan1.IFina1 Diesel USI'Rpt doe <br />