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03 January 2017 <br /> AGE-NC Project No. 95-0121 <br /> Page 3 of 6 <br /> Soil-vapor samples will be analyzed by a State of California Department of Public Health <br /> Services (CDPH)-certified laboratory for the following constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with <br /> EPA Methods TO-15; <br /> • Volatile aromatic compounds (benzene, toluene, ethylbenzene, xylenes: BTEX) in <br /> accordance with EPA Method TO-15; <br /> • Naphthalene and isopropyl alcohol in accordance with EPA Method TO-15 and <br /> • Oxygen (as a percentage) in accordance with Modified ASTM D-1946. <br /> Laboratory reports for the soil-vapor 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 findings and recommendations. <br /> 2.3. REPORT PREPARATION <br /> Results of the soil-vapor intrusion investigation will be presented in a report of findings. <br /> The report will be in a format acceptable to the CRWQCB (Appendix A - Reports, Tri- <br /> Regional Board Staff Recommendations for Preliminary Investigation and Evaluation of <br /> Underground Storage Tank Sites), and will be reviewed and signed by a California <br /> Professional Geologist. <br /> 3.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of <br /> a California Professional Geologist. Procedures for soil boring advancement, soil sample <br /> collection and soil-vapor sample collection procedures are described below. <br /> 3.1. DRILLING ACTIVITIES <br /> The following procedures will be performed prior to any digging/drilling activities: <br /> • Prepare a Site Health and Safety Plan in accordance with the Occupational Safety <br /> and Health Guidance Manual for Hazardous Waste Site Activities - Prepared by <br /> National Institute for Occupational Safety and Health, Occupational Safety and <br /> Health Administration, U.S. Coast Guard and U.S. Environmental Protection <br /> Agency, October 1985. <br /> • Notify the RWQCB and SJCEHD a minimum of 72 hours prior to commencement <br /> of any work, following the date of issue for drilling and/or well permits. <br /> • All drilling locations will be marked at least 48 hours in advance for an Underground <br /> Service Alert (USA) check of underground utilities or pipes. <br /> Advanced GcoEm ironmcntal,Inc. <br />