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10 May 1996 <br /> AGE-NC Project No. 95-0108 <br /> Page 3 of 5 <br /> 3.0. SCOPE OF WORK <br /> 3.1. SOIL PROBING <br /> AGE proposes to initially advance four soil probings at the site to determine the lateral and vertical <br /> extent of hydrocarbon-impacted soil remaining at the site. Probings will be advanced using a <br /> Geoprobe 5400 probing unit equipped with 1.125-inch probing rods. Each probing will be advanced <br /> to a minimum depth of 35 feet. One probing will be advanced within the western portion of the <br /> former UST excavation; one probing will be advanced southwest of the former excavation; and two <br /> additional probing will be advanced in the parking area east of the former UST excavation. If <br /> additional probings are required to determine the lateral and vertical extent of the hydrocarbon- <br /> impacted soil, the probing will be established during this phase of the scope of work. The proposed <br /> probing locations are depicted in Figure 2. <br /> Discrete soil samples will be collected at five-foot intervals using a Geoprobe soil sampling assembly <br /> and four pre-cleaned brass sleeves. Upon sample retrieval, the ends of the second brass sleeve will <br /> be covered with Teflon sheets, capped and sealed with tape. Samples will be placed in a chilled <br /> container and transported under chain-of-custody procedure to a State-certified laboratory. Each <br /> sample sleeve will be labeled with the following: boring location, depth, time, date and sampler's <br /> initials. <br /> 3.2. STOCKPILE SOIL SAMPLING <br /> AGE proposes to collect up to 15 discrete soil samples from hydrocarbon-impacted stockpiled soil <br /> and impacted soil which was backfilled into the UST excavation. Stockpile soil samples will be collect <br /> from approximately 2 feet below the surface; soil samples from the backfilled stockpile will be <br /> collected from approximately 3 feet below surface grade. Sample will be collected using a metric soil <br /> sampler pre-loaded with two 2 by 3-inch brass sleeves. <br /> 3.3 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 probing rods will be cleaned prior to <br /> advancement at each probing location. <br /> 3.4 LABORATORY ANALYSIS <br /> Selected soil samples will be analyzed for TPH-d, TPH-d quantified after a waste extraction <br />