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Gary A. Reents 6 14 April 1989 <br /> 1. The May and June 1989 letter reports on the brine recycling <br /> system should be submitted to this office. The letter reports <br /> must include the appropriate additional Report of Waste <br /> Discharge informational requirements, as described earlier. <br /> 2 . The areal and vertical extent of soil contamination in the area <br /> of the abandoned leach field must be delineated and data gaps <br /> identified. This information and (if necessary) a soil sampling <br /> work plan to delineate the areal and vertical extent of soil <br /> contamination in this area should be submitted by 1 May 1989 . <br /> 3 . If the areas identified in Chapter 2 of the report as being <br /> potential sources of soil contamination (i.e. , previous <br /> occupants and the old uncovered salt storage shed) are <br /> significant sources of ground water contamination, then a soil <br /> sampling work plan to delineate the extent of soil contamination <br /> should be submitted by 1 May 1989. If it is determined that <br /> these areas are not significantly impacting the quality of the <br /> ground water, then a report justifying this conclusion should <br /> be submitted by 1 May 1989 . <br /> 4 . The plans and time schedule of Southwest Hide' s proposed <br /> investigation regarding leaks in their current salt processing <br /> system should be submitted to this office for review by 1 May <br /> 1989 . <br /> 5. On-site and neighboring lands ' water use patterns should be <br /> determined and compared to local ground water gradient <br /> fluctuations. This information should be presented within the <br /> Beneficial Use Analysis and Remedial Action Plan, scheduled for <br /> submission on 1 August 1989 . <br /> 6 . It is mentioned in the report that ground water level <br /> measurements will be taken weekly. Beginning immediately <br /> monthly ground water elevations should be contoured on a site <br /> map and submitted to us for review. <br /> 7 . The increase in TDS noted in well 2 has been attributed to purge <br /> waters leaching through salt laden soils in the area of <br /> monitoring well 2 . Southwest Hide Company should submit a work <br /> plan to investigate this potential source of contamination by <br /> 1 May 1989 . <br /> 8 . Southwest Hide Company should consider the affect of the pumping <br /> of their production well on contaminant migration patterns. The <br /> production well should be sounded to determine its depth. The <br /> 140 foot estimate of the vertical depth limit of ground water <br /> contamination should also be explained. This information should <br />