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f 12 February 1999 <br /> AGE-NC Project No. 98-0540 <br /> Page 3 of 8 <br />� s <br /> permitting, a health and safety plan will be prepared in accordance with Occupational Safety and <br /> Health Guidance Manual for Hazardous Waste Site Activities(National Institute for Occupational <br /> Safety and Health Administration, U.S. Coast Guard and U.S.,Environmental Protection Agency, <br /> 1985). Prior to mobilization,each soil probe location will be clearly marked and a utility clearance <br /> obtained through Underground Service Alert. <br />' 3.2. SOIL SAMPLE COLLECTION AND ANALYSIS <br /> Initially, AGE proposes to advance six soil borings at the site to evaluate the lateral and vertical <br /> extent of petroleum hydrocarbon impact. Selected borings may be completed as ground water <br /> monitoring wells. Proposed soil boring locations are illustrated in Figure 2. <br /> Each boring in the former UST area will be advanced to ground water(anticipated at 60 feet bsg.). <br /> The remaining borings will be advanced to depths of 30 feet bsg. However, total depths of borings <br /> will be based on field observations and field screening using an organic vapor monitor(OVM). Soil <br /> samples will be collected from each boring at five-foot intervals beginning at 5 feet bsg to the total <br /> depth. Field procedures for advancement of borings and collection of soil samples are presented in <br /> Section 4.2. At least one sample from each boring will be submitted for laboratory analysis. E <br /> Selected soil samples will be analyzed by a State of California Department of Health Services <br /> (DHS)-certified laboratory for the following constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 Modified/5030; <br /> • Volatile aromatics (benzene, toluene, ethyl benzene and xylenes: BTE3) and methyl tert- <br /> butyl ether(MTBE) in accordance with EPA Method 8020 and <br /> Selected soil samples may also be analyzed for intrinsic permeability,moisture content,porosity and <br /> total organic carbon(TOC).in accordance with the appropriate EPA or ASTM methods. <br /> Soil samples from the hydraulic lift and separator areas will be analyzed for the following <br /> constituents: <br /> • Total petroleum hydrocarbons quantified as hydraulic oil(TPH-ho) in accordance with EPA <br /> Method 8015 Modified/5030; <br /> • Volatile aromatics(benzene, toluene,ethyl benzene and xylenes: BTEX) and methyl tert-. <br /> butyl ether(MTBE) in accordance with EPA Method 8020; <br /> Advanced GeoEnvironmental,Ina" _ k <br />