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09 February 1996 <br /> AGE-NC Project No.95-0185 <br /> Page 3 of 5 <br /> water after washing with a solution of Alconox. All hollow stem augers are steam-cleaned prior to <br /> advancement in each borehole. <br /> 3.3. LABORATORY ANALYSIS <br /> Selected soil and ground water samples will be analyzed for total petroleum hydrocarbons quantified <br /> as diesel (TPH-d), total petroleum hydrocarbons quantified as gasoline (TPH-g) and volatile <br /> aromatics (benzene, toluene, ethyl benzene, and xylenes: BTE&X) in accordance with EPA methods <br /> 8015/5030 and 8020/602, respectively. Laboratory reports of both soil and ground water analyses, <br /> testing methods, laboratory quality assurance/quality control (QA/QC) reports, and sample chain of <br /> custody documentation will be presented in a report with the findings and recommendations. <br /> Soil samples may also be analyzed for permeability, porosity or other geophysical properties, if <br /> necessary, to evaluated remedial options. <br /> 4.0. PROCEDURES <br /> 4.1. INSTALLATION OF GROUND WATER MONITORING WELLS <br /> The following procedures will be performed for the installation of monitoring wells: <br /> I. Notify the PHS-EHD 48 hours prior to commencement of any work, while securing proper <br /> city/county soil boring permits. <br /> 2. Boring Iocations will be marked at Ieast 48 hours in advance for an Underground Service <br /> Alert (USA) check of underground utilities or pipes. <br /> 3. Advance four soil borings, using a truck-mounted drill rig equipped with 8.25-inch or 12-inch <br /> diameter hollow stem augers. Each boring will be advanced to a depth of 35 feet. Boring <br /> locations will be approved by the PHS-EHD prior to drilling. <br /> 4. Decontaminate all sampling equipment in an alconox solution and rinse twice with water prior <br /> to each sampling run. Steam-clean auger flights before advancement of each boring. <br /> 5. Collect soil samples from each boring, beginning at 10 feet bsg, utilizing a California split- <br /> spoon sampler and pre-cleaned 2-inch by 6-inch brass sleeves. <br /> 6. Preserve soil in the brass sleeve by covering both ends with aluminum foil or Teflon tape, <br /> capping, and sealing with tape. <br /> 7. Store the samples under ice and transport the samples in a chilled ice chest to a State certified <br /> laboratory for analysis. <br />