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07 August 1998 <br /> AGE-NC Project No. 97-0327 <br /> Page 4 of 5 <br /> cement(grout mix) will be utilized to backfill each borehole utilizing a tremie pipe. The PHS-EHD <br /> will be given the opportunity to inspect the grout mix prior to backfilling activities. <br /> 3.2. PROBING EQUIPMENT DECONTAMINATION <br /> All probe rods and sampling tools used for sample collection will be thoroughly rinsed with clean <br /> water after washing with a solution of Alconox. <br /> 3.3. LABORATORY ANALYSIS <br /> Selected soil samples will be analyzed for the following: <br /> • TPH-g and TPH-d in accordance with EPA methods 5030 and 801518015m; <br /> • BTE&X and MtBE in accordance with EPA method 8020; <br /> • Oxygenating compounds (MtBE, TBA, DIPS, TAME and EtBE) in accordance with EPA <br /> method 8260. <br /> Laboratory reports and sample chain-of-custody documentation will be presented in a report with <br /> the findings and recommendations. <br /> 4.0. PROCEDURES <br /> 4.1. ADVANCEMENT OF SOIL PROBE BORINGS <br /> The following procedures will be performed for the advancement of soil probings and collection of <br /> soil samples: <br /> 1. Notify the Public Health Services - Environmental Health Division at least 48 hours prior <br /> to commencement of any work, while securing proper city/county permits. <br /> 2. Prepare a Site Health and Safety Plan in accordance with the Occupational Safety and Health <br /> Guidance Manual for Hazardous Waste Site Activities. <br /> 3. Mark probing locations at least 48 hours in advance for an Underground Service Alert(USA) <br /> check of underground utilities or pipes. <br /> 4. Advance each soil probing using a van-mounted Geoprobe probing unit (direct push <br /> teclmology: DPT) equipped with 1.25-inch diameter rods. Each probing will be advanced to <br /> Advanced Cc'oEitvit-OnlnentHl.Inc. <br />