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t r <br /> r02 May,12001 <br /> -. AGE-NC'"Prod ecN -0828t o 01 <br /> i'. Page,3.of 6 <br /> „`feature in' 'the vicinity.of the property is the Stockton Diverting Canal,approximately 3,000 feet north, <br /> r ' of the property. ". .. = <br /> JI <br /> r " . ..2.4.. " <br /> 2 4 GROUND WATER DEPTH AND FLOW DIRECTION f <br /> rBased onlreview of the Lines of Equal Depth to'Groundwater,,:Fall•1999 map'published by the Sani ,."Joaquin County Flood Control District and Water Conservation Disirict(FCD&WCD),the estimated <br /> depth to groundwater at the site is between 40 'and 50 feet below surface grade (bsg). However; ' <br /> historical ground water depth-may have,been between 70.and 80 feet bsg. t <br /> Review of the map Lines of Equal Elevation of Groundwater;Fa111999(FCD&WCD)depicts thee <br /> regional ground Water flow direction towards the northeast.. <br /> r '30. SCOPE OF.WORK J <br /> : Based .upon" analytical. results .of previous investigations, ..the PHS-EHD 'has required this <br /> �. :investigation to determine the.lateral and vertical.extent of hydrocarbon-impacted soil and"to' <br /> determine if an unauthorized release ofpetroleum hydrocarbons has impacted groundwater.Initially, <br /> AGE.proposes to advance.four soil probe borings at the.site for collection of soil and"grab' ground <br /> r water,samples-for analysis.However, additional probe"borings°may be required to'adequately define <br /> the lateral and vertical extent of hydrocarbon-impacted soil and groundwater: <br /> r :The investigation will consist of the following tasks: <br /> r - • Permitting an pre-field work activities; <br /> Soil sample collection and'analy'sis; ' <br /> Groundwater collection and'analysis, " <br /> • Report preparation. <br /> Each of these tasks are.discussed below in detail. . <br /> 3.1.; .PERMITTING AND PRE-FIELD WORK ACTNITIES <br />' 'App idable site.assessment permits will be obtained from the PHS-EHD. Asrequired by PHS-EHD <br /> permitting, a site,specific health and safety plan will be,prepared in accordance`•with,Occupational <br /> Advanced GeoEnvironmental,Inc. <br />