ARCHIVED REPORTS_XR0005066 - Laserfiche WebLink

Home Browse Search

' 27 June 2002 • AGE-NC Project No. 98-0520 Page 2 of 8 samples were logged on a chain-of-custody form,transported to McCampb ell Analytical Inc.(MAI), ' a State of California Department of Health Services(DHS)-certified laboratory, and were analyzed ; for:. ; ' • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA Methods 503018015=Modified; ' • Benzene,toluene,ethylbenzene and xylenes(BTEX)and methyl tertiary-butyl ether(MTBE) in accordance with EPA Method 8020; and 1 ' • The fuel oxygenates MTBE, di-isopropyl ether'(DIPE), ethyl tertiary-butyl ether(ETBE), tertiary amyl methyl ether (TAME), and tertiary butanol (TBA) in accordance with.EPA Method 8260 Modified. ' 1 In addition, selected soil samples from MW76 and MW-9 with strong hydrocarbon odors were analyzed for TPH-d and TPH-mo (EPA Method 8015) to determine the possibility of additional source(s) of contamination. • 2.1.2. Logging During soil-boring activities, sample duplicates were monitored for the presence of organic vapor '.(OV) using an organic vapor meter equipped with a photo-ionization detector (PID: Thermo , Environmental 5 80A, 10.0 eV,calibrated to isobutylene)and were visually described on boring logs in accordance*with the Unified Soil Classification System'(USCS). Boring logs are included in ' Appendix A. 2.1.3. Equipment Decontamination All hollow stem augers were steam-cleaned prior.to advancement in each boring;tools and brass ' . sleeves used were thoroughly washed in a solution of Alconox and rinsed with clean tap watet prior to each sampling run. 2.1,4. Monutoring Well Installation ' The four soil borings were completed as ground water monitoring wells utilizing 2-inch diarrieter, schedule 40,blank polyvinyl chloride(PVC)casing and 2-inch diameter.screened PVC casing with ' 0.020-inch screen slots. ' ' Advanced GeoEnvironmental,Inc.