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�� .t'e'�"f � .�'"�� p�. _" � k, '�xY ��` e-.YF ''�.r ''` �'-t�`e�_.1'`�k`f'�.-.✓'. •�''' .. `4�` ��'d� 1'tr L 'Pu`Cl� _ _ <br /> x <br /> n6x e <br /> AC. <br /> - <br /> �` v' { ,f d ��- F -• +�-+.k - P� .4 xFFef es ��� " � ... s-�f° ,� ,!","� _ <br /> 7 April 1992 <br /> (GeoAudit CV55--59E2-1.32) <br /> Page 3 of 3 <br /> 8) Decontaminate sampling equipment in a tri-sodium <br /> p o peach <br /> solution (TSP) and rinse twice with water prior <br /> sampling run. <br /> 9) Monitor auger returns and soil samalhoto-ionization ctes r the <br /> presence of volatile organics using p <br /> detector (PID) pre-calibrated to isobutylene. <br /> 10) Log auger returns in accordance with the Unified Soul <br /> Classification System. <br /> 11) Backfill the borings using concrete-bentonite slurry in the <br /> entire depth of the borings. <br /> 12) Si;bmit to EHD a site investigation report detailing the <br /> results of the work. <br /> Please call our office if you have any questions. <br /> Sincerely, <br /> GEOLOGICAL. AUDIT SERVICES <br /> l <br /> Victor B. Cberven, Ph,D. <br /> Project Geologist <br /> Registered Geologist No. 3475 <br /> Enclosures <br /> cc: (2) Mr. Scott Adrian - Escalon packers, Inc. <br />