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RE-MANUFACTURING LTD. -2- 19 February 1991
<br /> SOIL AND GROUND WATER
<br /> ASSESSMENT REPORT
<br /> logs are contained in Table 3 and Appendix B of the SGWA. First water was
<br /> encountered roughly 60 feet below ground surface.
<br /> The borings for each of the monitoring wells were sampled at five-foot intervals
<br /> from the ground surface to the top of the water table. Selected samples were
<br /> analyzed for total lead, soluble lead (citrate WET) , phenols, total petroleum
<br /> hydrocarbons (TPH) , and halogenated and aromatic volatile organic compounds
<br /> (VOC's) . The specific analyses run on each sample are shown on Table 1 (see
<br /> attached table) . I spoke to Renee Zollinger, from Kleinfelder, on 8 February 1991.
<br /> She stated that the well names were labeled incorrectly in Table 1. I have written
<br /> in the appropriate changes. Ms. Zollinger will submit a corrected table. The
<br /> sample analyses shown on Table 1 correspond with Kleinfelder's 19 September 1990
<br /> modified Proposed Sampling Plan.
<br /> No extractable TPH, volatile organics, or phenols were detected in the soil samples
<br /> Kleinfelder submitted for analysis. However, the Board collected two samples from
<br /> MW-1 at 25 and 30.5 feet below ground surface which contained 1 .46 mg/kg and 1.21
<br /> mg/kg dichloromethane, respectively. According to reports in the file,
<br /> dichloromethane (methylene chloride) was used in the manufacturing of chemicals at
<br /> an adjacent business within the Moore Industrial Park. Manufacturing wastes and
<br /> waste water from other businesses may have been disposed to the Re-Manufacturing
<br /> surface impoundment (SI) or historic impoundments near the existing SI. All of the
<br /> total lead results from the well borings were near or below the detection limit of
<br /> 5 mg/kg. The maximum total lead concentration was 6 mg/kg. Two of the samples
<br /> were analyzed for soluble lead and both were below the detection limit of 0.5 mg/L.
<br /> 2. Perform a complete chemical characterization of the ground water beneath the SI.
<br /> This shall include analysis of pH, general minerals, priority pollutant metals,
<br /> halogenated volatile organics, non-halogenated volatile organics, aromatic volatile
<br /> organics, phenols, and TEH.
<br /> The three completed wells were sampled on 9 October 1990. The Board collected
<br /> split water samples from MW-1 for separate analysis. Kleinfelder's samples were
<br /> analyzed for halogenated and aromatic VOC's, phenols, extractable TPH, priority
<br /> pollutant metals, major ions, pH, EC, and TDS. 1,1-dichloroethene, chloroform, and
<br /> 1,1, 1-trichloroethane were detected in Kleinfelder's water sample from MW-1 at
<br /> concentrations of 2.0, 1 .4, and 1 .4 µg/L, respectively. The MW-1 water sample
<br /> collected by the Board, on the other hand, contained chloroethane, chloroform, 1,1-
<br /> dichloroethane, 1,1,1-trichloroethane, and vinyl chloride in concentrations of 0.8,
<br /> 0.8, 1 .6, 0.8, and 1.7 µg/L, respectively. No other VOC's (including
<br /> dichloromethane, which was found at 25 and 30.5 feet below ground surface in soil
<br /> samples collected by the Board while coring MW-1) , TPH, or phenols were detected
<br /> in any of the wells above laboratory detection limits.
<br /> Table 5 (attached) contains the results of the metals and major ion analyses. (The
<br /> results of the Board's split samples from MW-1 are contained in the 7 December 1990
<br /> inspection report in the file. ) The only priority pollutant metals above detection
<br /> limits in Kleinfelder's samples from all three wells were chromium, at 0.023 mg/L,
<br /> in MW-2 and mercury, at 0.0002 mg/L, in MW-3.
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