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31 August 2016 <br />AGE Project No. 96-0235 <br />Page 4 of 8 <br />One soil boring will be advanced in the landscape strip on the western side of 1217 <br />Harrison Street; the boring will be advanced to approximately 45-50 feet and 85 <br />feet bsg, for the collection of a deep grab groundwater sample to assess the lateral <br />and vertical extent of petroleum hydrocarbon impact. <br />One soil boring will be advanced in the landscape strip on the western side of 1229 <br />Harrison Street; the boring will be advanced to approximately 45-50 feet bsg and <br />85 feet bsg, for the collection of a deep grab groundwater sample to assess the <br />lateral and vertical extent of petroleum hydrocarbon impact. <br />Discrete soil samples are not proposed to be collected from the probe borings; the site <br />geology framework and sampling depth have been established. <br />Additional soil borings will be proposed within the first scope of work, if field detections of <br />petroleum hydrocarbons are present in the northern most soil boring. However, field <br />personnel may adjust the frequency and method of sampling in consultation with an AGE <br />Professional Geologist. <br />3.3. LABORATORY ANALYSIS <br />Selected grab groundwater samples will be analyzed by a California Department of Public <br />Health (CDPH)-certified laboratory for the following constituents: <br />Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and <br />TPH-d, respectively) in accordance with EPA Method 8015M; and <br />Volatile organic compounds: benzene, toluene, ethylbenzene, and xylenes (BTEX) <br />and fuel oxygenates methyl-tertiary butyl ether (MTBE), di-isopropyl ether (DIPE), <br />ethyl tertiary-butyl ether (ETBE), tertiary-amyl methyl ether (TAME), and tertiary <br />butanol (TBA) and lead-based fuel scavengers ethylene dibromide (EDB) and 1,2- <br />dichloroethane (1,2-DCA) in accordance with EPA Method 8260B. <br />Laboratory reports for water analyses, testing methods, laboratory quality <br />assurance/quality control (QA/QC) reports, and sample chain-of-custody documentation <br />will be presented in a report with the findings and recommendations. Electronic <br />deliverable format (EDF) files of the laboratory analytical results will be submitted to the <br />State of California GeoTracker database. <br />3.4. MONITORING WELL INSTALLATION DRILLING <br />AGE proposes to advance one on-site soil pilot boring to a depth of approximately 85 feet <br />bsg for the purpose of logging lithology and for the installation of one on-site deep <br />groundwater well to monitor HU3. The pilot soil boring will be advanced using a truck- or <br />track-mounted drill rig equipped with 8.25-inch hollow-stem augers. The total depth of the <br />.4dranced GeoEnvironmental Inc.