COMPLIANCE INFO_1993-2007 - Laserfiche WebLink

Home Browse Search

Manganese=.2i' 1987 Sampling for inorganic constituents showed higher levels of sulfate chloride and bromide in MW -2 with relation to MW -1 and MW -3. The sampling showed a general increase in TDS in down gradient wells 1986 Sampling for volatile organics detected the following: -\AW-3 .5 Benzene and .8 ppb Ethyl benzeze Benzene and 1.0 ppb Ethyl benzene ?????????????? Since MW 7,8,9 and 10 are present on the Martin Metals property already what is the feasability of installing another set of detection monitoring wells at the north eastern most point of area B to determine if the site is leaching material into the vadose zone or the water table. PCB INVESTIGATION r : i! is letter of is September1987 the samples through a number 10 seive prior to analysis. This procedure may 8 i19911 ma W-- minj mjn4 sizes for r r. •: and Federal standards." Mil MUM ♦11M• r • •. a • • • a• RWQCB letterof -r - r -r 1987 states• - analysis using EPA method 8080 indicates but does not prove that PCBs are present or absent in a sample. The letter then states that much of the error (of EPA 8080) may be eliminated isusing • isuch as Method 8270. This method may be used to confirm the presence of and to better quantify the PCBs in a sample. In the PCB investigation conducted by Kleinfelder July 15, 1988 it states that a confirmatory analysis was run on the samples using a more sophisticated peice of analytical equipment (GC/MS) unfortunately problems caused by sample dilution and matrix interferences threw a shadow on the validity of the 9'(0 ????????????????Testing done U /87 by ENESCO shows PCBs at 1.1 x 10(5) and 1.2 X10(5) Testing done 5/27/88 PCBs EPA 8080 shows detectable levels of PCBs from samples taken from backhoe pits. These results may be considered inconclusive and further testing should be done. ???????????????????????????????????????????????????????????????????????? 0000 /J,C102 11-1� 0 () 0 0 l