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03 June 2015 • <br /> AGE Project No. 15-3325 <br /> Page 2 of 4 <br /> AGE proposes to advance a total of four (4) soil borings along the northern and <br /> southern regions of the property, two located north of the warehouse show room and <br /> warehouse, and two within. Borings will be advanced to depths of fifteen feet below <br /> surface grade (bsg) for collection of soil-vapor samples at five and fifteen feet bsg along <br /> the northern property boundary. Samples collected within the showroom and warehouse <br /> will be advanced to a depth of ten feet bsg for collection of soil-vapor samples at five <br /> and ten feet. Proposed soil boring locations are depicted in Figure 2. <br /> Borings will be advanced using a mechanical hand-held hammer (rotohammer) and/or a <br /> GeoProbe® or PowerProbe® direct-push unit equipped with 1.25-inch probing rods. <br /> The probe unit advances soil boring using a hydraulic hammer to drive soil sampling <br /> tools to specific depths. <br /> Soil-vapor samples will be submitted to a California Department of Public Health <br /> (CDPH)-Certified laboratory and samples will be selectively analyzed for: <br /> • Total petroleum hydrocarbons (TPH) in accordance with EPA-method 8015- <br /> modified; and <br /> • Volatile organic compounds (VOCs) in accordance with EPA-method 82608. <br /> Upon completion of the field work and receipt of laboratory analysis, a brief report will <br /> be prepared. The report will be reviewed and signed by a California Professional <br /> Geologist. <br /> PERMITTING AND PRE-FIELD WORK ACTIVITIES <br /> Applicable drilling permits will be obtained from the EHD and a site-specific Health and <br /> Safety Plan will be prepared. Prior to mobilization, each soil boring location will be <br /> clearly marked and a utility clearance obtained through Underground Service Alert. The <br /> EHD will be contacted a minimum of three days prior to conducting investigation <br /> activities to arrange for inspection. <br /> FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative working under the <br /> supervision of a California Professional Geologist. Procedures for sample collection and <br /> analysis, equipment decontamination and sample handling are presented below. <br /> SOIL-VAPOR SAMPLING <br /> Advanced GeoEnvironmental,Inc. <br />