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I STAFF REPORT - Quarr Excavation y i Application Information Owner: KRC Aggregate, Inc. i 1 Applicant: KRC Aggregate, Inc. ;F File Number: ER-94-1, QX-94.2 Location: On the north side of Brandt Road, at its easterly point of termination, approximately seven miles east of State Route 88, southeast of Clements. _ Address: 24717 E. Brandt Road, Lodi h General Plan: A/G, OS/RC Community: Zoning; AG-80 APN: 230-3 60-02,03; 230-190-01,02; 230-170-09 Project Size: 1048 acres (500 acres Parcel Size: 1100-acres to be excavated) Water Supply: Private well Sewage Disposal: Septic system Storm Drainage: Natural, retention ponds 100-Year Flood: No Williamson Act: Yes, Supervisorial District: 4 j Staff: Kerry Sullivan CEQA Determination: EIR Project Description w The applicants, KRC Aggregate, Inc., are proposing to expand the limits of excavation of an existing permitted quarry excavation (QX-86-1). The existing quarry operations encompass approximately 110 acres-the original 100 acres permitted under QX-86-1 plus 10 acres permitted by administrative approval under the provisions contained in Development Title Section 9-854.7. The proposed expansion will add an additional area of 938 acres, for a total area under permit of 1048 acres. Of the 1048-acre total area, the actual acreage to be excavated is 500 acres. F Aggregate resources will be excavated up to a depth of 40 feet, with the average depth to be excavated of approximately 25 feet. Sand and gravel deposits will be excavated by first removing all of the available topsoil in the respective phase being worked with a Caterpillar wheel tractor-scraper. The topsoil will then either be stockpiled for future reclamation or respread on a previously excavated area for reclamation and revegetation. Overburden is then excavated and either stockpiled or respread for reclamation. The applicants expect production to continue in the range of 500,000 to 1,000,000 tons per year, for a total amount of sand and gravel to be excavated of 25,000,000 tons over a 20- to 25-year period. Excavation will be conducted in four 5-year phases; each phase is composed of approximately)00 acres to be excavated. Reclamation and revegetation of the site will also be phased. As excavation of Phase 1 is completed and excavation of Phase 2 begins, reclamation and revegetation of Phase 1 will commence. All drainage from excavated areas will remain on the site. Waste materials produced from the processing operation are limited to clay and fine silts suspended in the process water. Process water is recycled back through a series of three recycling/settling ponds, where clays and fine silts settle out. The water is recycled and used as process water for the plant. i San Joaquin Count q Y QX-94-2/KRC Aggregate Community Development page 1 r 'i J