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gt�� ��RTxw. .:P.,kK ,1..>� e fid. .,.5'�1 _M+_ �-' m i. i✓L s:K � '. '" .•� 4�s S;. �ilr�""�' a 'J.. <br /> Mr. R.W. Conlon <br /> January a. 1991 242/150-4150 <br /> Page 3 <br /> TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> July 23, 1990 <br /> (in feet) <br /> ADJUSTED <br /> WELLHEADDEPTH TO GROUNDWATER <br /> WELL ID ELEVATION GROLINDWATEP. ELEVATION COMMENTS <br /> MW-1 10.12 38.43 <br /> MW-2 11.11 -28.33 .57 SP <br /> MW-3 38.98 -27.87 <br /> MW-4 11.32 39.60 -28.26 <br /> 10.08 38.34 -28.28 <br /> MW-5 10.26 38.84 -28.58 <br /> MW-6 10.33 <br /> 38.44 _28.11 <br /> MW-7 10.12 38.37 <br /> 25 <br /> MJV-8 9.58 -28.37.95 28.3399 <br /> MW-9 <br /> 9.99 38.64 -28.65 <br /> MW-10, 10.84 .. <br /> MW-11 10.17 38.85 <br /> -28.68 <br /> SP Separate-phase petroleum hydrocarbons (gasoline). <br /> MW-10 was not guagad or sampled due to an obstruction In the well. <br /> The water samples were analyzed using modified EPA Methods 5030/8020/8015, which measure <br /> concentrations of total petroleum hydrocarbons-as-gasoline(TPH-G),and benzene,toluene,ethyl-benzene, <br /> and xylenes(BTEX). Copies of the laboratory analysis reports and Chafn-of-Custody manifest are presented <br /> In Attachment I. <br /> GROUNDWATER ANALYTICAL RESULTS <br /> Concentrations of TPH-G In the groundwater samples ranged from below method detection limit (<1)to <br /> 79,000 parts per billion (ppb); higher levels than those reported for the previous quarter. TPH-G <br /> concentrations In groundwater for November 9, 1990 are shown In Flgw a 2. The benzene concentrations <br /> ranged from 0.8 to 23,000 ppb. Benzene concentrations In groundwater for November 9, 5990 are shown <br /> In Figure 3. Results of the analyses are presented in Table 2. s? <br /> >r <br /> f <br /> GROUND%%',TER <br /> TP.ciiN(}LQGy,INC. <br />