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y CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. 92-007 WASTE DISCHARGE REQUIREMENTS FOR EL RANCHO ROCK AND SAND, INC. , INSPIRATION RESOURCES CORP. , ALBERT PURVIANCE SR. , CYNTHIA ANN PURVIANCE, ALBERT PURVIANCE, JR. , SHARYL CHRISTINE PURVIANCE, AND VICTORIA IZETTA PURVIANCE SAND AND GRAVEL QUARRY AND PROCESSING PLANT SAN JOAQUIN COUNTY The California Regional Water Quality Control Board, Central Valley Region, (hereafter Board) finds that: 1. El Rancho Rock and Sand Inc. and Inspiration Resources, Inc. submitted a Report of Waste Discharge dated 22 April 1991 for an existing sand and gravel quarry and processing plant. The quarry area is proposed to be expanded to include the entire 480 acre lease holding. The site is on Assessor' s Parcel Nos. 093-450-01 , 093-450-05, 093-450-06, and 093-450-07 and is owned by Albert Purviance Sr. , Cynthia Ann Purviance, Albert Purviance, Jr. , Sharyl Christine Purviance, and Victoria Izetta Purviance. The site is operated by El Rancho Rock and Sand, Inc, and is leased by Inspiration Resources Inc. El Rancho Rock and Sand, Inc. , Inspiration Resources Corp. , Albert Purviance Sr. , Cynthia Ann Purviance, Albert Purviance, Jr. , Sharyl Christine Purviance, and Victoria Izetta Purviance are hereafter jointly referred to as Discharger. 2. The Discharger proposes to discharge up to 2.6 million gallons per day of wastewater from rock and sand washing operations to a sedimentation/recycle pond system. 3. The quarry and plant are in Section 1 , T2N, R9E, MDB&M with surface water drainage to a tributary of the Calaveras River, as shown on Attachment A, incorporated herein and made part of this Order. 4. The beneficial uses of the Calaveras River are municipal , industrial , and agricultural supply; stock watering; navigation; recreation; esthetic enjoyment; and preservation and enhancement of fish, wildlife, and other aquatic resources. 5. The beneficial uses of the ground water are municipal , industrial , and agricultural supply. 6. The Discharger will be excavating up to 500,000 cubic yards per year of near-surface rock and sand deposits from approximately 240 acres of the 480 acre site. The surface soils and sediments will be excavated and hauled to the processing plant. Excavation will remain above an elevation of 240 feet m.s. l . datum, which is above the ground water table.