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14 September 1998 <br /> AGE-NC Project No. 98-0468 <br /> Page 4 of 10 <br /> 2.4. SITE GEOLOGIC CONDITIONS <br /> Information regarding site geologic conditions was obtained from borings and excavations conducted <br /> at the site. Boring logs for the monitoring well borings describe.subsurface soil as primarily <br /> consisting of interbedded sand and clay deposits. Lithology for boring MW-1 was described. as <br /> consisting of sand from ground surface to approximately 16 feet bsg and clay froPi'1�6 to 30 feet bsg. <br /> Subsurface soil encountered in boring MW-2 was described as consisting`�fsand from ground suface <br /> to 8 feet bsg, underlain by clay from 8 to 13 feet bsg, and sand deposits from"1.3 to 30 feet bsg. in <br /> boring MW-3 fill material was described from ground surface to 12 feet bsg and sand deposits from <br /> -12 to 30 feet bsg. However, during site characterization activities,shallow subsurface soil at the site.. <br /> was reported to consists primarily of clay from ground surface to a'depth of 16 feet bsg (Twining, <br /> 1997), <br /> 3.0 SCOPE OF WORK <br /> Based on.the.results of the previous investigations and UST.removal activities, the extent.of. - <br /> petroleum hydrocarbon impacts to soil and ground water has not been delineated. The investigation- <br /> of <br /> nvestigationof the extent of petroleum hydrocarbons at"the site,will consist of the followiiig tasks: <br /> • Permitting and pre-field work activities; <br /> • <br /> 'Soil sample collection and analysis; <br /> • In-situ ground water sample collection and analysis; <br /> • Monitoring well installation and development; <br /> • Ground water sample collection and analysis; and " <br /> • Report preparation. . <br /> Each of these tasks'is described in greater detail below. : <br /> 3.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES' <br /> 'Applicable site assessment permits will be obtained from the PHS-EHD. In addition, a health and <br /> safety plan will be prepared in accordance with Occupational'Safety and-Health Guidance Manual <br /> for Hazardous: Waste Site Activities (National Institute for Occupational Safety and Health <br /> Administration, U.S. Coast-Guard-and U.S. Environmental Protection Agency, 1985). Prior to <br /> mobilization,,the monitoring well location will be clearly_ marked and an utility:Cleardrice obtained <br /> through Underground Service Alert. <br /> Advanced GeoEnvironmental,Inc. <br />