Laserfiche WebLink
25 October 1997 <br /> AGE-NC Project No. 97-0361 <br /> Page 3 of 6 <br /> methyl-tent-butyl ether (MTBE), tertiary butyl alcohol (TBA), di-isopropyl ether (DIPE), ethyl <br /> tertiary butyl ether(ETBE)and tertiary amyl methyl ether(TAME)in accordance with EPA methods <br /> 8015m/5030 and 8020/602 and 8260/8240. <br /> 3.3. SOIL LOGGING <br /> +.. Soil was extruded from the remaining brass sleeves and screened for the presence of organic vapor <br /> using an organic vapor meter equipped with a photo-ionization detector (PID) pre-calibrated to <br /> isobutylene (PID), and the readings were recorded on the boring logs. The soil was described in <br /> accordance with the Unified Soil Classification System. <br /> 3.4. GRAB GROUND WATER SAMPLE COLLECTION <br /> A grab ground water sample was collected from the first water encountered in probe boring Pl using <br /> V <br /> a pre-cleaned ane-lialf inch PVC screen and one-quarter-inch bailer. At the request of the PHS-EHD <br /> a discrete water sample was collected from a depth of 35 feet bsg using a Geoprobe water sampling <br /> assembly. Probe rods were extended into ground water to a depth of 35 feet bsg and then pulled back <br /> to expose a water-sampler screen interval. Ground water was allowed to enter the sampler, and <br /> samples were retrieved using a modified PVC tubing bailer. <br /> Both samples were transferred into 40-m1, EPA-approved VOA vials containing hydrochloric acid <br /> for sample preservation. The samples were labeled, placed in a chilled container, and were <br /> 4-0 transported to MAI under chain-of-custody. The water samples were analyzed for total petroleum <br /> hydrocarbons quantified as gasoline (TPH-g), for volatile aromatics (benzene, toluene, ethyl <br /> benzene and xylenes: BTE&X), and other oxygenated fuel additives; methyl-tert-butyl ether <br /> 40 (MTBE), tertiary butyl alcohol (TBA), di-isopropyl ether(DIPS), ethyl tertiary butyl ether(ETBE) <br /> and tertiary amyl methyl ether(TAME)in accordance with EPA methods 8015in/5030 and 8020/602 <br /> and 8260/8240. <br /> La <br /> 4.0. FINDINGS <br /> 4.1. STRATIGRAPHY <br /> tr <br /> During the installation of the soil probe boring, brown, moist silty sand was encountered between <br /> depths of 5 and 15 feet bsg. A thin layer of clay was observed at depths of 17 to 19 feet and sand was <br /> +r encountered between depths of 20 and 35 feet bsg. A soil boring log is included in Appendix A. <br /> u Advanced GeoEnvironmental,Inc. <br /> 1r <br />