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21 March 1997 <br /> AGE-NC Project No 95-0173 <br /> Page 3 of 8 <br /> Soils are to be described using the Unified Soil Classification System (USCS) Soil sample <br /> descriptions and PID screening results will be summarized on boring logs prepared in a report of <br /> findings <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 Hollow stem augers wilt be steam-cleaned prior to <br /> advancement in each borehole <br /> 3 3 SOIL BORING COMPLETION <br /> The proposed ground water monitoring wells will be completed as 2-inch diameter monitoring wells <br /> using 20 feet of slotted PVC casing Ground water monitoring well design is illustrated in Figure 3 - <br /> Proposed Ground Water Morntoi ing Well Design Monitoring wells will be developed utilizing a <br /> . submersible pump Water will be purged from each well so that each well is essentially sediment free <br /> Purged ground water will be stored on-site in DOT drums in an area inaccessible to the general <br /> public A reference point will be marked on the top of each well head, and surveyed the to the nearest <br /> 0 01-inches to determine the elevation relative to existing wells <br /> The proposed soil vapor extraction wells will be dual-completed as 2-inch diameter soil vapor <br /> extraction (SVE) wells using PVC casings, slotted at independent intervals Soil vapor extraction <br /> well design is illustrated in Figure 4 -Proposed Soil Vapor Extraction Well DeAign <br /> The proposed air sparging well will be completed as a 2-inch diameter sparging well using PVC <br /> casing and five feet of slotted PVC casing The air sparging well design is illustrated in Figure 5 - <br /> Proposed Air Sparging Well Design <br /> 3 4 LABORATORY ANALYSIS <br /> Selected soil and ground water samples will be analyzed for total petroleum hydrocarbon quantified <br /> as gasoline and diesel (TPH-g and TPH-d), volatile aromatics (benzene, toluene, ethylbenzene and <br /> xylenes BTE&X) and methyl-tertiary butyl ether (MTBE) in accordance with EPA methods 8015m <br /> and 8020/602 Laboratory reports of both soil and ground water analysis, testing methods, laboratory <br /> quality assurancelquality control (QA/QC) reports and sample chain-of-custody documentation will <br /> be presented in a report with the findings and recommendations <br /> • Selected samples will also be analyzed for permeability, porosity, soil moisture, percent organic <br />