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0 • <br /> WASTE DISCHARGE REQUIREMENTS -2- <br /> J. R SIMPLOT COMPANY <br /> LATHROP, SAN JOAQUIN COUNTY <br /> threat to ground water quality. Discharge specifications for the reclaimed wastewater are included <br /> in this Order. <br /> 4. The 341-acre facility, comprised of Assessor's Parcel Numbers: 198-140-03, 04, 05, 10, & 11; <br /> 198-150-01, 02, 03; 04, 05; 198-160-09; and 198-180-01 through 09 was previously owned by <br /> Occidental Chemical Company. As of 1 January 1983, Occidental Chemical Company conveyed to <br /> the Discharger, certain property and assets of the Lathrop facility. The Lathrop facility is one mile <br /> south of the town of Lathrop in Section 3 5, Township 1 S, ME, MDB&M as shown in Attachment <br /> ntl owns all the land comprising the Lathrop facility, <br /> The Discharger presently P g <br /> this Order. Th y <br /> A, apart of g P <br /> and all the improvements to the land except the ground water remedial system (treatment plant, <br /> associated monitoring wells and extraction and in <br /> wells) its supporting laboratory, records <br /> and e <br /> equipment.. <br /> ment. <br /> 5. Under terms and conditions of the Stipulation and Judgment Approving Settlement <br /> (No. CN S-79-898 MLS) for investigation and cleanup of the Occidental Chemical Company site, <br /> approved by the U. S. District Court 9 February 1981 Occidental Chemical Company is responsible <br /> for investigation and remediation of the site. <br /> 6. Under terms of the Stipulation and Order(hereafter Stipulation) approved by the Court <br /> 21 December 19_84 <br /> California consented'to the transfer from Occidental Chemical Company to <br /> Simplon of the Lathrop property and assets provided that Occidental Chemical Company expressly <br /> retains full responsibility for compliance with all obligations imposed by the Stipulation, and that <br /> Simplot assumes responsibility for the proper handling, storage, and disposal of liquid and solid <br /> wastes and storm water runoff in accordance with the Stipulation. <br /> 7. The Discharger manufactures and formulates fertilizers at the Lathrop facility. <br /> 8. WMUs at this facility,consist of three lined ponds and one unlined pond, as shown in Attachment <br /> IV which is irtcorporated herein and made part of this Order. Also shown in Attachment.'B" is - <br /> thelocation of the reclamation fields. <br /> WASTES AND THEIR CLASSIFICATION <br /> 9. Prior to Order No. 94-189, Order No. 83-038 regulated the site and permitted the discharge of up <br /> to 3.6 million gallons per day (mgd) of process waters from the manufacture of fertilizer pellets to <br /> the asphalt-lined pond, which now has two liners. This water was recycled for use in the fertilizer <br /> manufacturing. A change in operations resulted in a decrease in wastewater flows. The discharges <br /> from the process area are intermittent and consist of periodic discharges of process and washdown <br /> water. Average discharge is estimated at 0.05 mgd. <br /> 10. The Discharger also discharges an average of.0.03 mgd of stormwater runoff from the fertilizer <br /> manufacturing process area and zeolite softener backwash water to one 3.5-acre double <br /> Hypalon-lined evaporation pond, one 2.8-acre double Hypalon-lined evaporation pond, and one <br /> J <br />