Laserfiche WebLink
25 May 2001 <br /> AGE-NC Project No. 95-0118 <br /> Page 3 of 6 <br /> 2.3. LABORATORY ANALYSIS OF GROUND WATER SAMPLES <br /> i;J, <br /> Each ground water sample was logged on a chain-of-custody form, placed in a chilled container and <br /> ;.a <br /> transported to a California Department of Health Services (DHS)-certified laboratory for analysis for: <br /> Total petroleum hydrocarbons quantified as gasoline (TPH-g) by EPA Method 8015 <br /> Modified; <br /> • Volatile aromatic compounds - benzene, toluene, ethylbenzene and xylene (BTEX) and <br /> methyl-tertiary butyl ether (MTBE) by EPA Method 8020; and <br /> • Methanol, ethanol, ethylene dibronude(EDB), 1,2-dichloroethane (1,2-DCA), tertiary butanol <br /> (TBA), di-isopropyl ether (DIFF), ethyl tert butyl ether (ETBE), tert amyl methyl ether <br /> (TAME), and confirmation of MTBE by EPA Method 8260 Modified. <br /> 2.4, MONITORING OF SVE AND COLLECTION OF SOIL VAPOR SAMPLES <br /> `=s' On 26 April 2001 a vacuum blower capable of.extracting approximately 50 to 60 cfm was operated <br /> at the site.. The system was operated for a 24-hour period prior to monitoring/sampling- The system <br /> was monitored to measure flow rate of extracted soil vapor using a Dwyer differential pressure flow <br /> meter and to measure organic vapor concentrations in the extracted vapor- stream entering the blower <br /> (influent strearn), using an organic vapor meter equipped with a photo-ionization detector (PID: <br /> Thermo Environmental 58OA, 10.OeV, calibrated to isobutylene). <br /> A vapor-sample set was collected on 27 April 2001 from the influent streams using a Tedlar-bag. The <br /> sample was labeled, placed in an ice chest and transported under chain-of-custody to a DHS-certified <br /> laboratory for analysis for: <br /> • TPH-g in accordance with EPA Method 8015 Modified and <br /> • BTEX and MTBE in accordance with EPA Method 8020. <br /> Advanced GeoEnvironmental,Inc. <br /> .a <br /> i - <br />