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kn K L E I N F E L D E R <br /> Tevelde stated that there has never been any large spills or leaks from the AST's. Mr. Tevelde <br /> stated that there has never been any chemical mixing areas on the site. Mr. Tevelde stated that <br /> there are multiple wells on site being used for domestic and irrigation purposes, as well as, a <br /> septic system located to the south of the residence. The leach lines trend north/south from the <br /> septic system. Mr. Tevelde stated that the waste water ponds are lined with 10% clay and that <br /> Waste Discharge Requirements (WDRs) for the ponds have been issued by the RWQCB. Mr. <br /> Tevelde stated that equipment is maintained in the garage within the office building. Mr. <br /> Tevelde stated that all of the drains on the property connect with the western waste water pond. <br /> Then the water from the western waste water pond is pumped into the eastern waste water pond. <br /> Most of the solid waste is left in the first pond. Mr. Tevelde stated that the drains of the site are <br /> first rinsed with an alkaline soap and then an acid is ran through the pipes and into the waste <br /> water pond. <br /> 5.5 HISTORICAL TOPOGRAPHIC MAPS <br /> Year Quadrangle Series Scale <br /> 1953 Farmington, CA 7.5 minute 1 inch=2,000 feet <br /> 1968 Farmington, CA 7.5 minute 1 inch= 2,000 feet <br /> 1984, Farmington, CA 7.5 minute 1 inch= 2,000 feet <br /> photorevised 1987 <br /> 1953 <br /> The subject site is vacant there are no structures. Carter Road and Escalon-Bellota Road are <br /> present on the map. <br /> 1968 <br /> The subject site is essentially unchanged from the 1953 map, however, there is a dirt road <br /> trending north/south across the subject site. <br /> 1984 (photorevised 1987) <br /> The subject site is essentially unchanged from the 1968 map. <br /> 20-4322-0I TO1/2019R547 Page 16 of 23 <br /> Copyright 1999,Kleinfelder,Inc. .tune 28, 1999 <br />