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v v <br /> May 8, 1989 s� <br /> ^, 17060,022.03 Naming La"an`Asa lciatoa <br /> Mr. Hal Miller <br /> The Southland Corporation <br /> Page 3 <br /> Table 1, Summary of Water Analyses <br /> Descri tion Test Method <br /> Total petroleum hydrocarbons <br /> as gasoline Recommended DHS method, <br /> I:UFT Manual <br /> Benzene, toluene, ethvlbenzene, EPA Test Method 602 <br /> and total. xylenes <br /> -------------- <br /> -�� <br /> ` RESULTS AND .DISCUSSION <br /> P <br /> � Chemical Analvsea <br /> - Table:2. summarizes the results of all chemical analyses <br /> performed since November 1986 on water samples collected at <br /> the site. The laboratory <br /> k .test report. for. the March 1989 <br /> i round of sampling is in the Appendix. <br /> In July 1988, Only 4 of the 15 monitoring wells on site, MW <br /> P <br /> 7, . MW-s, MW-9, :and MW--10, had detectible concentrations of <br /> benzene, toluene, <br /> Of totalethylbenzene, and ..otal xylenes (BTEX) , or <br /> ' petroleum hydrocarbons (TPH) as gasoline. As (` <br /> z,r previously noted, MW-7 was destroyed prior to the March <br /> sampling: The March 1989 results indicate no detectable <br /> concentrations. of BTEX or TPH in , <br /> In -9 and there were marked decreases in BTEX concentrations, a10` <br /> minor increases in TPH levels. <br /> ro <br /> downgradient of MW-8 through 10 continue Samples ftomshowlno <br /> detectable concentrations--of-BTEX- or TPH. <br /> _ _ - - <br /> c : Table.3 presents a <br /> summary of aI7 water elevation data <br /> Collected since March 1987. . <br />