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The relative depths to water measurements at WOS MW No 1 indicate the <br /> surface of the groundwater has vaned as follows <br /> WOS Monitoring Well No.1 <br /> Date WL FT Elev of <br /> Measured below TOC Groundwater <br /> TOC= 57 54 Surface MSL* <br /> 12/21/00 4768 986 <br /> 3130101 4711 1043 highest elevation of water <br /> 119102 4964 770 <br /> 4111102 4835 919 <br /> 6119102 4870 884 <br /> 9124/02 51 15 639 <br /> 12/20/02 51 15 639 (note field recorded depth to water were the same <br /> 3124/034993 761 for MW No 1 in 9102 and 12102 soundings) <br /> 619103 4961 793 <br /> 9123/03 5275 489 lowest elevation of water <br /> MSL'based upon Victor Fine Foods MW3A reference to Victors DATUM and common reference mark on MW No 1TOC <br /> ! CHEMICAL PARAMETERS <br /> Groundwater Quality <br /> The first groundwater sample (June 19, 2002) from MW No 4, located up-gradient of <br /> the general contaminated areas, was non detect, 3 months later it was 0 003 mg/Itr <br /> greater than the detection level of 0 050 mglltr for diesel and 6 months later <br /> (December) it was again below detection level of 0 050 mg/L <br /> ! Volatile fractions such as Benzene, Toluene, Ethyl-benzene and Xylene (BTEX) were <br /> again not detected in any sampled groundwater BTEX samples were collected and <br /> analyzed in the March and June 2003 sampling events As BTEX findings continued <br /> to be non-detect, and we requested and verbally granted discontinuance of BTEX <br /> sampling <br /> Samples from MW Nos 1 through 3 and 6 indicate low levels of petroleum <br /> hydrocarbon contamination The hydrocarbon fraction where found in MW locations <br /> may be classified as "diesel" Grab samples (December 2000) from the bottom of <br /> bonngs BH Nos C-4/C-6 and C-5/C-7 indicated a lighter extractable C10-C-28 <br /> fraction The borings were grouted closed after collecting samples and could not be <br /> retested Chromatograms from laboratory analysis were submitted in the June 2002 <br /> interim report along with complete laboratory reports The most recent September <br /> 2003 sampling laboratory findings are included herewith Reference ATTACHMENT <br /> 4, EXTRACTS FROM ANALYTICAL LABORATORY FINDINGS- September 2003 <br /> '. During the September 2003 sampling, the "diesel" fraction was detected at levels <br /> between 0 05 and 12 mglltr Levels in MW No 1, the original MW installed in <br /> ! December 2000, dropped toll 2 mglltr <br /> Pg 3 <br />