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f <br /> 06 June 1997 <br /> r AGE-NC Project No. 97-0327 <br /> Page 3 of 5 <br /> loaded with pre-cleaned 1.125-inch by 6-inch brass sleeves. Soil samples were preserved by covering <br /> both ends of brass sleeve with Teflon sheets, capping and sealing with tape. Upon preservation, each <br /> sample sleeve was labeled with the following information: soil probe boring location, depth, time, date <br /> and sampler's initials. <br /> The samples were logged on a chain-of-custody form, stored in a chilled container and transported <br /> to a state-certified laboratory for analysis in accordance with EPA method 801.5m for total petroleum <br /> hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d), and in accordance with EPA <br /> method 8020 for volatile aromatics (benzene, toluene, ethyl benzene and xylenes: BTE&X) and <br /> methyl tert-butyl ether (MTBE). <br /> 3.4. LOGGING <br /> During probe boring activities, sample duplicates were monitored for the presence of organic vapor <br /> using a photo-ionization detector (PID: Thermo Environmental 580A, 10.0 eV, calibrated to <br /> isobutylene) and described on boring logs.using the Unified Soil Classification System (USCS). <br /> Boring logs are summarized in Appendix A. <br /> 3.5. EQUIPMENT DECONTAMINATION <br /> All sampling tools and brass sleeves used for sample collection were thoroughly rinsed with clean <br /> water after washing with a solution of Alconox. All Geoprobe rods were cleaned prior to <br /> advancement in each probing. <br /> 4.0. FINDINGS <br /> 4.1 SOIL PROFILE <br /> Soil encountered at the site consisted primarily of silt and sandy silt. Generally, a mottled gray and <br /> brown to pale brown, medium dense, moist, sandy silt was encountered from 5 to 30 feet bsg. A pale <br /> brown to brown, loose, moist, fine to medium sand was encountered at 35 feet bsg. Boring logs are <br /> included in Appendix A. <br /> 4.2 FIELD EVIDENCE OF HYDROCARBON-"ACTED SOIL <br /> Slight petroleum hydrocarbon odors were detected in soil probe boring P-4 at depths from 20 to 30 <br /> feet bsg. Organic vapor was detected using a PID in two P-4 soil sample duplicates (20 an 25 feet) <br /> ,I <br />