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26 May 1998 <br /> AGE-NC Project No. 98-0454 <br /> Page 2 of 4 <br /> 3.0. SCOPE OF WORK <br /> 3.1. PROBING AND SAMPLING <br /> A subsurface investigation at the site is necessary to investigate if an unauthorized release of <br /> petroleum hydrocarbons related to the former use of underground storage tank(s) (USTs) at the site. <br /> The scope of work is to advance six (6) soil probe borings, utilizing direct push technology (DPT). <br /> Probe borings will be advanced to depths of approximately 25 feet below surface grade(bsg),using <br /> direct push technology (DPT). Proposed probe boring locations are illustrated in Figure 2. <br /> Soil samples will be collected at five-foot intervals using a Geoprobe sampler and four brass or <br /> teflon sleeves. Upon sample retrieval, the second brass or plastic sleeve will be removed from the <br /> sampler. The ends of the sleeve will be immediately covered with Teflon tape or aluminum sheets, <br /> capped and sealed with tape. Each sample will be placed in a chilled container for transportation to <br /> a state-certified laboratory. Each sample sleeve will be labeled with the following: boring location, <br /> depth,time,date and sampler's initials. After collection, samples will be stored in a chilled container <br /> and transported to a state-certified laboratory. <br /> 3.2. EQUIPMENT DECONTAMINATION <br /> All sampling tools and brass sleeves used for sample collection will be thoroughly rinsed with clean <br /> water after washing with a solution of Alconox. All Geoprobe rods are cleaned prior to advancement <br /> in each probing location. <br /> 3.3. LABORATORY ANALYSIS <br /> Selected soil samples will be analyzed by the following EPA methods for the specified analytes and <br /> compounds: <br /> • EPA Method 8015 M for total petroleum hydrocarbons quantified as gasoline(TPH-g),EPA <br /> Method 8020 for volatile aromatic compounds (benzene, toluene, ethyl-benzene and total <br /> xylenes: BTE&X), <br /> • and if field observations indicate that other petroleum hydrocarbons are present, additional <br /> analysis may be necessary. <br /> Laboratory reports of soil analyses, testing methods, laboratory quality assurance/quality control <br /> (QA/QC)reports, and sample chain of custody documentation will be presented in a report with the <br /> findings and recommendations. <br /> Advanced GeoEnvironmental,Inc. <br />