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, r <br /> x ^z- <br /> ray <br /> Ms. Darlene Reuss <br /> August 7, 1989 <br /> Page 2 <br /> Item 3 <br /> Soil cuttings from the soil borings will be placed in DOT approved drums and disposed of properly. <br /> Item 4 <br /> Refer to page 2 of the Phase I <br /> samples. Hydrogeolog"Assessment FFOrk Plan for screening and submittal of soil <br /> Item 5 <br /> Soil boring logs B.1 through B-6 are presented in the following attachment. Twu soil borings are <br /> Proposed.to define the vertical extent of petroleum hydrocarbons near the former tank <br /> (SB-1) and the northwest pump island (SB-2). excavation <br /> Results of the tank closure activities indicated the presence of Petroleum hydrocarbons at a depth of <br /> 15 feet underneath the leaded underground storage tank at a concentration of 1,030 parts per million <br /> (Ppm) total petroleum hydrocarbons H , <br /> benzene was absent. Consequently,Delta proposed a soil boring(SB 1) atmical analysis Of this othis locil ation tiondin order toicated <br /> determine the vertical accent of Petroleum hydrocarbons in the soils A second soil boring(SB-2)was <br /> Proposed near the pump island in order to investigate the detection of TPH at a concentration of <br /> ppm during tank closure act ales. <br /> Depending <br /> Similarly, benzene was not detected in this soil sample. <br /> nding on the field screening results of these two sail borin <br /> additional soil bOrings/monitong <br /> wells may be installed. If field screening indicate the presence of petroleum hydrocarbons within 15 <br /> feet of the wafer table, Delta proposes to install thret monitoring wells at the locations shown in <br /> Figure,3 of the submitted work plan. 7bese locations were chosen due to the expected direction of <br /> ? ground water flow to the southwest. <br /> The! tions of monito <br /> ning wells MW-1 and MW-3 were chosen as u radient monitorin wells. The <br /> location of monitoring well MW-2 w the down adient monitorin well, The installation <br /> of these monitorin wells will enable the direction of <br /> hydround water flow and the rm ct of iroleum <br /> oca0 rbons tround water to be determinP.t <br /> Item b <br /> Delta will consider continuous coring at one of the soil boring locations. <br /> - - On August 3,1939,-Mr,,Jim Brownell of-this office spoke with Ms.Diana f Iinsan regarding the above - <br /> �Horlc plan and Nture work plans. Ms.Hinson stated that if Delta met the requirements of the Tri- <br /> proceRegional recommendations (Initial Evaluation and ItEvesli88tlan of Underground Tanks, dated June <br /> e,and revised on May 18,m. in the required reports,Delta could obtain drilling permits and <br /> proceed with the drilling program: <br />