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rt <br /> from bottom using the backhoe bucket and the trench eras refilled. <br /> A location was selected .s4 east of the UST site, and the backhoe <br /> dug a trench to 7 ' ; a strong petroleum odor and visible free <br /> product was noted below 6 6". A soil sample was taken at 7 ' , and <br /> the trench was refilled with removed spoil. <br /> Using the hand auger , 3 borings were made north of the former <br /> tank site: 19 north to a depth of 6 '6" ; 40 ' north to a depth of <br /> 6 ' y and 65 ' north to a depth of 7 '6". Contamination was noted in <br /> all three auger hales~ and sell samples were taken from the last <br /> two borings. All auger holes were filled with cement. <br /> ADDENDUM TO WORK PLAN: <br /> In an attempt to determine the lateral extent of the <br /> contamination, it is proposed to extend the area of investigation <br /> in all directions from the farmer US1 site by the fallowing <br /> procedures using Del--Tech Inc. equipment & personal under the <br /> supervision of Wna. Hunter' s RG: <br /> 1 . 7." OD solid stem flights, equipyud with a carbide bit , will <br /> be driven to depths of between 10 & 15 foot , using a powered <br /> rotary hammer. <br /> 7. Cuttings and core samples will be examined and described by <br /> the geologist, and screened with a PID meter as necessary. <br /> 3. Total penetrations and locations of each boring will be <br /> dependent upon results of the prior hole; based on previous data, <br /> It 16& anticipated that groundwater will be encountered at <br /> app rokimately 10 ' bLjl . <br /> 4. Soil samples may be taken 14 warranted by conditions <br /> encountered during boring. Samples will tie obtained by driving a <br /> properly prepared brass sleeve into the bottom df the hole. <br /> Samples will be sealed , labeled , and preserved on ice pending <br /> transmittal to the laboratory fur analysis. <br /> 5. Water samples may be taken as determined by conditions <br /> encountered during field operations. <br /> 6. Upon completion of the work, each auger hole will be grouted <br /> to the surface with cement. VVU� 444 U)�� t.AA . <br /> The number and locations of the bearings cannot be determined in <br /> advance; it is hoped that the lateral limits of the plume can be <br /> . established daring one day 's field work. Exhibit "A" shows <br /> locations of borings & trenches at completion of work dome 1116; <br /> }� Ex h i b i t "b" shows existing work to me thudol ogy -for attempt s ng to <br /> rr <br /> y� <br /> n1.P} <br />