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'- "„��»�, -- _i ,-,F _.�� .'�sr.' - - ter_-- - - ,��:•„ ��, ..`..�.d "�,,=. `z _ �”' <br /> r <br /> f <br /> CURRE14T STATUS <br /> On October 3, 1991, PHS approved in a letter (attached) the <br /> work done and noted that they concurred with the opinion of <br /> Hunter & Associates; that is, that no further work was <br /> needed to demonstrate that the groundwater had not been im- <br /> pacted. It was also stated that an addendum should be <br /> submitted confirming the completion of the site investiga- <br /> tion and remedial action. This addendum report is in <br /> response to that requirement. <br /> REMEDIATION <br /> On October 30, 1991, Richard Thorpe reported to Hunter & <br /> Associates as follows: No direct remediation efforts had <br /> been made on the spoil pile. After re,eiving the results of <br /> q_ the laboratory tests on the spoil pili (reported in report <br /> # 3) and attached hereto, he received verbal permission from <br /> Margaret Lagorio to replace about 3;Y of the spoil in the <br /> excavation. Slumping. had been undermining the building and <br /> fill was needed to support the hole walls. This spoil had <br /> been replaced soon after the results of the first tests were <br /> received; in late June of 1991. The westerly portion of the <br /> i <br /> f spoil pile had bee: LV t in place. <br /> A <br /> r Figure 1 from Report # 3 is attached. On this figure it can <br /> 3g be seen that the only soil contamination found was a small <br /> amount of toluene in the westerly sample, i+Zr. Thorpe also <br /> '. reported that he had received permission from the EHD to re- <br /> sample the remaining spoil for toluene only because that was <br /> all that had been found previously. Two samples :were taken <br /> by FGL Laboratory on 10/17/1991 and the tested for toluene. <br /> ,. These samples are located on Figure I as described by Mr. <br /> Thorpe. <br /> No toluene was found in either sample, Laboratory data and <br /> chain-of-custody forms are attached, Exposure to the sun and <br /> air for about four months apparently evaporated whatever <br /> toluene that had been left in the spoil . <br /> j <br /> Only about 10 yards of spoil as a maximum remain on the <br /> site, and based on the recent tests, it appears that natural <br /> remediation has occurred and that no further remediation is <br /> necessary. <br /> HUNTER & ASSOCIATES <br /> -- — -- -- — -- ---- ---- -- �gtRl�70 --- ----- - - ----— <br /> rr.i 11 <br /> Dennis R Allen,. C,E.G <br /> a� � .. , �,Ci•erg...vti`i <br /> EMBER,N Mill, M <br />