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Q 3 S O8 5 - 5-ew-f-o, :W ea(. OP�U'N SAN JOAQUIN COUNTY COMMUNITY DEVELOPMENT DEPARTMENT • 1810 E.HAZELTON AVE.,STOCKTON,CA 95205-6232 C4�iF 6,0 ? PHONE:209/468-3121 FAX:209/468-3163 February 3, 2000 MEMORANDUM TO: Development Committee FROM Kai Luoma Associate Planne SUBJECT: QUARRY EXCAVATION NO. QX-99-3 OF AGGREGATES, INC. -------------------------------------------------- The project is a Quarry Excavation to remove 1 million cubic yards of aggregate in two phases over ten years, with two additional years to complete reclamation. The final use will be orchards. Excavated material will be extracted using scrapers, bulldozers, graders, and loaders. Material is to be transported by haul trucks to an existing aggregate processing plant located approximately 3 miles west. The excavation will disturb approximately 78 acres of an 81.5-acre parcel. Approximately 40 acres of the site is currently an orchard. The other 40 acres is vacant. Reclamation of the site will occur simultaneously with excavation. Topsoil and overburden will be removed from an area and set aside. Once mining has been completed in that particular area, the topsoil and any overburden will be replaced and mining will begin in another area. The Community Development Department has reviewed the application and responses from other agencies and offers the following comments: • The Initial Study prepared for this project identified a potentially significant impact to archeological or historical resources. A qualified archeologist shall perform an archeological/historical survey of the entire site. Should the survey determine that no significant archeological/historical resources are present, a report documenting the methodology and findings of the survey shall be submitted to the Community Development Department and no further mitigation required. If the survey determines that a significant impact to cultural resources exists, mitigation measures rendering impacts to less- than-significant levels must be identified. If such impacts exist and no feasible mitigation measures are identified, an Environmental Impact Report will be required. • Heritage oak trees are known to exist in the vicinity. A site plan identifying the location and type of oak trees in the project area shall be required. Ten oak trees shall be planted for each heritage oak tree to be removed. • In the letter dated January 24, 2000, the Department of Conservation suggested several revisions to the reclamation plan. These revisions include a clarification of the end use; specification of the type of erosion control seeding, i.e. species and seeding rates; specification on erosion control of stockpiles; identification of soil type and how the