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• r j ,,,��' / y WfY��r I Harry Islas ;may,14, 1981 San Joaquin County Planning Department 1810 East Hazelton Avenue Stockton: California 95202 Gentlemen; We have reviewed the Environmental Impact Report for the EIR--81-5/EP-81-9 of Stockton Sand and Gravel Excavation and wish to make the following comments. 1. The suitability or limitations of the land for the proposed action. The majority of the site consists of R,g, Redding gravelly loam Class IVe8. There are small areas of Gg, Greenfield gravelly sandy loam, Class IIs4t located mostly in the swales. These areas do not constitute any major portion of the site. Mine tailings, etc. are scattered throughout the area. The area is used for grazing, and without irrigation; this will continue to be the major land use. 2. Provisions for control of erosion and management of water during construction. Page 91 discusses possible erosion hazards and proposed methods of con- trol. We would strongly advise that a settling pond be constructed near or at the intermittent stream to collect any storm waters leaving the site. This would prevent any chance of silt entering the Gilmore Reservoir. 3. Provisions or land treatment on the project lands, rights-of-way, access roads9 and borrow areas. Land areas scalped during the operation of the site should be reseeded as soon as possible. This would help prevent any rill_ or sheet erosion during the rainy season. Seeding recommendations can be obtained from either the Soil Conservation Service or the Agricultural Extension Service, as to suitable species for that area. 4. The effect of water discharges from the project lands or rights-of-way onto other properties. Page 9, mentions that the site has a moderate erosion hazard. Items 2 & 3 in this report give two possible solutions. 5. The effects of disruption of the natural drainage pattern on other properties. See Item 2 AA-15