Laserfiche WebLink
Metadata
Document management portal powered by Laserfiche WebLink 9 © 1998-2015 Laserfiche. All rights reserved.
31 March 2000 <br /> AGE-NC Project No. 00-0699 <br /> Page 4 of 9 <br /> through Underground Service Alert. <br /> 3.2. SOIL SAMPLE COLLECTION AND ANALYSIS <br /> Initially, AGE proposes to advance three soil borings in the vicinity of the former USTs and <br /> dispenser islands to assess the lateral and vertical extent of the petroleum hydrocarbon impacted soil. <br /> and/or ground water. One boring will be advanced between the former UST area and the on-site <br /> domestic well; a second boring will be advanced near the former western dispenser island; and a <br /> third boring will be advanced east of the eastern dispenser island.The proposed boring locations are <br /> illustrated on Figure 2. <br /> The proposed boring locations may be modified due to field observations or additional borings may <br /> be advanced with approval by the PHS-EHD. Since ground water contamination was encountered <br /> during the Espana investigation,each proposed boring will be advanced to ground water,anticipated <br /> to be at a depth of approximately 60 feet bsg. <br /> Soil samples will be collected at five-foot intervals beginning at approximately 5 feet bsg and <br /> extending to the total boring depths.Field procedures for advancement of borings and collection of <br /> soil samples are presented in Section 4.1. <br /> Selected soil samples from each boring will be submitted for laboratory analysis with concurrence <br /> of the PHS-EHD. The selected soil samples will be analyzed by a State of California Department of <br /> Health Services (DHS)-certified laboratory for the following constituents: <br /> • TPH-g and TPH-d by EPA Method 8015 Modified; <br /> • Benzene, toluene, ethyl benzene and xylenes (BTEX)by EPA Method 8020; <br /> • Fuel oxygenates including methyl tertiary-butyl ether(MTBE),tertiary-butyl alcohol(TBA), <br /> di-isopropyl ether(RIPE), ethyl tertiary-butyl ether(ETBE) and tertiary-amyl methyl ether <br /> (TAME)by EPA Method 8260 Modified; <br /> • 1,2-Dichloroethane(1,2-DCA) and ethylene dibromide(EDB)by EPA 8260 Modified; and <br /> • Total lead by EPA Method 6010 <br /> Laboratory reports for soil analyses, testing methods, laboratory quality assurance/quality control <br /> (QA/QC) reports, and sample chain-of-custody documentation will be presented in a report with <br /> findings and recommendations. <br /> Advanced GeoEnvironmental,.Inc. <br />