SITE INFORMATION AND CORRESPONDENCE_FILE 1

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INFORMATION SHEET J.R. SIMPLOT COMPANY LATHROP, SAN JOAQUIN COUNTY As of 1 January 1983, Occidental Chemical Agricultural Products, Inc. (OCAP, for- merly Occidental Chemical Company) conveyed to the J.R. Simplot Company (Simplot) certain property and assets of the agricultural chemical production facility located at 16777 South Howland Road, one mile south of Lathrop in San Joaquin County, Section 35, T1S, R6E, MDB&M. Not included in the conveyance, but retained by OLAP, were the ground water remedial system, its supporting laboratory, records, and equipment, the phosphoric acid production plant, and the aqua recovery system. Under terms of the Stipulation and Judgment Approving Settlement (No. CIV S-79-989 MLS, hereafter Stipulation) entered as of 3 April 1981 in the civil action between the United States of America and the State of California versus Occidental Chemical Company, OCAP must permanently refrain from storing in any pond or tanks any hazardous liquid or solid wastes for time periods as specified; OCAP is prohibited from discharging pesticides or other chemicals, process wastewaters, and contamin- ated runoff; and OCAP must assure that any disposal site selected to receive its hazardous wastes is authorized, safe, and lawful. Under terms of the Stipulation and Order (hereafter Order) approved by the Court 21 December 1982, California consented to the transfer from OCAP to Simplot of the Lathrop property and assets provided that OCAP expressly retains full responsi- bility for compliance with all obligations imposed by the Stipulation, and that Simplot assumes responsibility for the proper handling, storage, and disposal of liquid and solid wastes and stormwater runoff in accordance with the Stipulation. J.R. Simplot Company manufactures fertilizers and related chemicals and formulates (blending concentrated technical grade pesticides with inert ingredients) 150 to 200 different pesticides. Principal waste streams include: 1. Nonprocess waters and rainwater runoff from the nonprocess area discharged to an unlined pond 2. Rainwater runoff from the ferilizer manufacturing area discharged to two hypalon-lined ponds 3. Process waters from the fertilizer manufacturing area discharged to an asphalt lined holding basin for recycling in pellet manufacturing 4. Irrigation waters from the unlined and hypalon-lined ponds discharged to agricultural lands 5. Demineralizer backwash water from a zeolite water softener discharged to the unlined ponds. 6. Rainwater runoff and equipment rinsate from the Agricultural Chemical Department discharged to storage tanks for transport to a Class I landfill for disposal. TRP:dg Amended 3/25/83