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W <br /> 02 January 20091 <br /> AGE-NC Project No . 99-0682 <br /> Page 2 of 7 <br /> 2. 1 , PRE-FIELD WORK ACTIVITIES <br /> Applicable site assessment permits will be obtained from the EHD. Access agreements will be <br /> obtained from the off-site property owners. In addition, a health and safety plan will be updated in <br /> accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site <br /> Activities (National Institute for Occupational Safety and Health Administration, U. S. Coast Guard <br /> and U. S . Environmental Protection Agency, 1985). Prior to mobilization, each proposed boring <br /> locationwillbe clearlymarked and anutility clearance obtained through Underground Service Alert. <br /> 2.2, DRILLING AND SAMPLE COLLECTION <br /> AGE proposes to advance three pilot soil borings utilizing a truck-mounted, hollow stem drill rig <br /> equipped with &inch diameter hollow-stem augers to total depths of approximately 70 feet bsg. The <br /> total depth of the borings may vary according to hydrogeologic/geologic conditions encountered <br /> wring drilling. Two of the three borings will be drilled for the collection of soil and gra ground <br /> water samp es; orings willbe located approximately 145 feet northeast ofwell MW- 11 (38 ; off-site <br /> at 520 East Park Street) and approximately 50 feet north of well MW- 10 (37; off-site at 548 East <br /> Park Street). One of the three borings will be drilled for installation of a ground water monitoring <br /> well; the well will be located approximately 140 feet northeast of well MW- 10 (MW 12; off-site at <br /> 548 East Park Street). Proposed pilot boring locations are depicted on Figure 2 . <br /> Soil samples will be collected frompilot borings B7, B8 and MW 12 at five foot intervals beginning <br /> at 50 feetbsg. Discrete grab groundwater samples (hydro-punch) will be collected from pilotborings <br /> B7 and B8 at an approximate depth of 70 feet bsg. Selected soil samples and grab ground water <br /> samples collected during boring operations will be analyzed by a State of California Department of <br /> Public Health (CDPH)-certified laboratory for the following constituents: I .I <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br /> accordance with EPA Method 8015 Modified; and 1 <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX constituents) and the fuel additives <br /> tertiarybutyl alcohol (TBA), di-isopropyl ether (RIPE), methyl-tertiary-butyl ether (MTBE), <br /> ethyl tertiary butyl ether (ETBE), tertiary amyl methyl ether (TAME), ethylene dibromide <br /> (EDB) and 1 ,2-dichloroethane (1 ,2-DCA) by EPA Method 8260B . <br /> Laboratory reports for ground water analysis, testing methods and laboratory quality <br /> assurance/quality control (QA/QC), and sample chain of custody documentation will be presented <br /> in a report with findings and recommendations . Procedures for pilot boring drilling, and ground <br /> water and soil sampling are presented in Sections 3 . 1 . and 3 .2 ., respectively. 1 <br /> i <br /> Advanced GenEnviranmental, Inc. 'J <br /> I <br />