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10 September 2001 - <br /> AGE-NC Project No...98-0497 <br /> Page 4 of 5 <br /> 3.L PERMITTING AND PRE-FIELD WORK ACT lVITIES <br /> Applicable site assessment permits will be obtained from the PHS-EHD. As required by PHS-EHD <br /> permitting, an-tip=dated site--specific health and safety lan will be prepared in accordance with <br /> Occupational Safety and Health Guidance Manual for Uazardous Waste Site Activities (National <br /> institute for'.Occupational Safety and' Health- Admi iistration, `U.S. Coast -Guard' and U.S: <br /> Environmental Protection Agency, 1985).Prior to'diggin activities, eachproposed-digging location <br /> - will be clearly marked and a'utility clearance obtained ough'Underground Service-Alert. <br /> 3.2. SOIL PROBE BORING AND MONITORING LL INSTALLATION <br /> Based on the results ofprevious investigations,AGE proposes advancement of one soil probe boring <br /> located approximately 30 feet east of the formher•diesel UST location to define the lateral extent of . <br /> ,contamination in soil. The-boring will be advanced to app oximately 100 feet bsg."Total depth of the <br /> soil boring will be based on field observations and field screening using an organic vapor monitor <br /> .(OVM). Soil samples will be collected from the boring at five-foot intervals beginning at 15 feet bsg <br /> to the total depth..At least two samples from the boring will be submitted for laboratory analysis.. <br /> Additionally, AGE proposes to installtwo.ground water monitoring wells near:'the former diesel <br /> 'UST to.define the lateral extent of contamination in ound water. One monitoring well will be: <br /> installed approximately 60�feet east.of the former UST location and one monitoring well will be <br /> installed approximately 70 feet west of the former UST location: Pilot borings for the monitoring <br /> wells will be advanced to a depth of approximately 78 f et bsg: Soil samples will be-collected from <br /> the pilot borings at five-foot intervals beginning a720 feet.bsg to the total.depth. At least two <br /> samples from each boring.will be:submitted for laboratory analysis. <br /> Selected soil samples collected from the three soil borin s will be analyzed by a State of California <br /> Department of Health Services (DHS)-certified.laborat for the following•constituents: <br /> • , TPH-d TPH_g in accordance with EPA Method O 15Modified; <br /> Volatile-aromatic compounds - benzene, tolue ethylbenzene and xylenes (BTEX) and <br /> methyl tertiary butyl ether(MTBE)'in accordan e frith EPA Method 8020; and <br /> • Fuel oxygenates including MTBE, tertiary,butyl cohol (TBA), di=isopropyl ether (DIPS), <br /> ethyl tertiary-butyl ether (ETBE) and tertiary- iyl methyl ether (TAME) by EPA Method <br /> 8260: <br /> Proposed soil.boring and monitoring well locations are i tustrated on:Figure 5. Field procedures for ' <br /> advancement of borings and•collection•of soil.samples. d installation,.'development and sampling ' <br /> .advanced GeeEnvironmentai,Inc. <br />