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`—� 1-3 1.4 POTENTIAL ENVIRONMENTAL ISSUES As a result of the Phase I ESA, Remcor identified three potential environmental issues, which warrant conducting a Phase II site assessment. These issues include the following: • Former underground storage tank (UST) location '� • Brine solution discharges to the ground surface • The leachfield associated with septic system. The former UST (Figure 2) was used to store gasoline and was removed during the 1970s. j-- No records are available to determine the size of the UST. Plant personnel have indicated that the UST was removed because it had leaked. The brine solution that was used in the former ice manufacturing process at the site is reported to have been discharged to the ground surface (Figure 2) on at least two occasions. Each of these discharges had been estimated to have been up to 45,000 gallons. The brine that discharged could have contained chromates as corrosion inhibitors. The area in which the discharges occurred has been identified by plant personnel (Figure 2). Floor drain(s) that exist in the Engine Room also present a potential environmental concern because they drain to the septic system, and subsequently to the leachfield (Figure 2). The potential exists that waste oil and solvents that were used in the Engine Room may have been washed down the drain. The septic system leachfield could have received brine solutions, waste oil, solvents, and/or other facility wastewaters. 1.5 REGULATORY CONSIDERATIONS Prior to the initiation of a subsurface investigation, certain factors should be considered. States frequently have notification requirements concerning the discovery of contaminants in soil or ground water. Whether or not a notification requirement is "triggered" can be a func- tion of many factors including such things as the particular contaminant type and concentra- tion, proximity to sensitive ecosystems, the likelihood of a completed exposure pathway, and the potential for harm to human health and the environment. Determinations concerning the :24447 i "REALISTIC SOLUTIONS FOR HAZARDOUS WASTE PROBLEMS"