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" , �--� ,ice . . • - <br /> 20 May 1999 <br /> AGE-NC Project No. 98-0466 <br /> Page 6 of 7 . <br /> ionization detector (PID) pre-calibrated to isobutylene. <br /> 7. Visually describe soil sample duplicates'in accordance with the Unified Soil Classification <br /> System (USCS; as per •Visual Classification of Soils; 1986, Bureau of Reclamation <br /> Engineering and Research Center), and.record o field boring logs. <br /> 4.4. COLLECTION OF GRAB GROUND WATER SAMPLES <br /> To collect and preserve ground water samples for lab ratory analysis and to properly-abandone• <br /> borings: <br /> 1. Collect'grab ground water samples from the'deep soil probe boring when the saturated zone <br /> and total probing.depth has been reached. Ground water samples will be collected using a <br /> Geoprobe water sampling assembly: <br /> 2. Ground water samples will be collected into thre -EPA-approved 40 ml VOA vials with 0.5 <br /> ml 18%hydrochloric acid asa sample preservative and into-a 1-liter.glass container lacking. <br /> a preservative (Note_ on the chain-of-custody that the 1-liter samples do not contain.-a <br /> preservative). <br /> 3. .-Label each sample container. with boring designation, date and time of sampling,.and <br /> sampler's initials, and log samples on a chain-b-custody form. <br /> 4. Store samples in a chilled container pending transport under,chain-of=custody to a state- . <br /> certified laboratory for analysis. <br /> 5. Backfill each probing to surface grade using p6itland cement utilizing a tremmie pipe. <br /> 4.5. LABORATORY ANALYSES <br /> Selected ground water and soil samples will be analyze for: <br /> L. TPH-d by EPA Method 8015 modified for diesel; and <br /> 2. . BTEX compounds by EPA Method 8020. <br /> 4.6. REPORT PREPARATION <br /> Upon completion of all field work, a report .will be prepared summarizing results of the work. <br /> performed.'The report will be in a format acceptable to the PHS-EHD and will be reviewed and <br /> A&,anred GeoEnvironmenlal,Inc. <br />