SU0013300 - Laserfiche WebLink

Home Browse Search

Item No . 3 PC : 6-15-89 RA-89-8 (QX-86-5) Page 2 STAFF ANALYSIS BACKGROUND: Property History: On October 2 , 1986 , the Planning Commission approved Quarry Excavation Application No . QX-86-5 . This application was for a permit to remove approximately 100, 000 to 200 , 000 cubic yards of sand per year from a sandbar in the San Joaquin River , over a five- to ten-year period. AREA/NEIGHBORHOOD COMPATIBILITY: Operational Characteristics: The existing quarry is located on the west bank of the San Joaquin River . Excavation is limited to an existing sand bar outside of the riverbed. Bulldozers and front-end loaders are used to excavate the sand. The sand is now screened and stock- piled on-site prior to removal by truck along an existing gra- vel road to Mossdale Road and Interstate 5 . Approximately, 1000 gallons of water per day is now pumped from the river for use in the sand screening operation and for dust control on the haul road. If this revision is approved, 2000 tons of coal ash per month will be brought to the site from the Energy Factors Co-Generation Plant in Stockton. Approximately four truck loads of coal ash will be brought to the site daily. As each truck load of coal ash is brought on-site, it will be imme- diately mixed with enough stockpiled sand to form a 7090-30% sand-to-ash mix. No unaugmented ash will be stockpiled on- site . The sand-ash mixture will be temporarily stockpiled on- site until tiie mixture is sold and hauled off the site . A concrete slab designed with a five-foot-high block wall on three tides and an opening on the fourth side for truck loading will be used for the ash staging and sand-ash mixing areas . Any of the sand-ash mixture to be temporarily stockpiled would be stockpiled on this concrete slab in the sand-ash mixing area. Each of the two bays will be sloped to a drain, and any drainage water will be pumped into an adjacent water truck. This drainage water can only be used to wet the storage pile and will not be used for dust control on the access roads . Conditions of approval relative to the storage and handling of the ash have been developed by the Local Health District .