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RUG-12-1994 12:35 FROM PARK ENVIRONMENTAL CORP. TO 12094640133 P.03 <br /> • <br /> nature of the hydrocarbon and compounds found. The fo motes from the soil and groundwater <br /> analytical data from both McCampbell Analytical, Inc. lated November 12, I993 and Alpha <br /> Analytical Laboratories,Inc.dated November 30, 1993 prest i nted in GAS's report(laboratory reports <br /> attached), indicate that the hydrocarbons detected do not match standards for diesel, aged diesel, <br /> gasoline,or aged gasoline. A similar review of the USA sW laboratory reports and chromatograms <br /> suggests that the TPH found may be the heavy end of ohne or the light end of diesel. The <br /> compounds identified during the various site assessm is may in fact be the same type of <br /> hydrocarbons and potentially from the same source(s)- <br /> In order to evaluate this possibility and to address the PHS/ concerns discussed in your January <br /> 7, 1994,letter to Manual Sanchez regarding the potential f r co-mingling of contaminant plumes, <br /> and the need for a coordinated effort, Park would like to ollect groundwater samples from the <br /> existing USA wells, the new proposed USA wells and GA 's monitoring wells MW-3 and MW-2 <br /> as part of the next quarterly groundwater sampling even. Park would appreciate PHS/EHD <br /> cooperation in assisting Park to obtain access to the G S wells for this important round of <br /> sampling. <br /> The final monitoring well locations will he selected after c ceptual approval for the movement of <br /> the well from the northeast comer of the intersection to a newly proposed location has been ✓ <br /> received by Park from the PHS/EHD. We will notify the P S/EHD prior to final marking of these <br /> well sites to obtain concurrence for the locations. <br /> Please contact either of the undersigned at 916.6523861 it our Rocklin office if you have any <br /> questions regarding this submittal. Park has received USA a�proval to move forward.with this work <br /> and is prepared to begin field work within ten days after ree pt of all agency approvals,site assess <br /> and necessary easements. <br /> Sincerely, <br /> Park Environmental Corporation <br /> Peter Frank, R.EA. <br /> Project Geologist <br /> f � 4r <br /> Richard J.Zipp, R.G., C.E.G. <br /> Principal Hydrogeologist <br /> PF:laa <br /> Enclosures <br /> C:�US.4STo3awr~rr-NM0D.rne 2 <br />