CORRESPONDENCE_1959 - 1989 - Laserfiche WebLink

Home Browse Search

r t STATE V.ATER RESOURCES CONTROL BO r INTERNAL MEMO , TO: Frank McDermott FROM: Jim Parsons Legal and Technical Services Central Valley Regional Board Division DATE- FEB 14 1980 SBGNATURE: -+�✓"'''�`"" SUBJECT: Tracy (Corral Hollow) Solid Waste Disposal Site, San Joaquin County We inspected the subject site February 7, 1980, together with Gene Fryling, Tracy sewage treatment plant supervisor. In addition, Daryl Scott, chemist for the City of Tracy showed us the location of the monitoring well that has been used for the last three or four years. Background: 1. Al Franks' March 9, 1976, memorandum to Richard Rose describes the site geohydrology and contains the recommendations: a. Clay or silty soils be used for the final cover. b. An impervious barrier with riprap be constructed at the base of the landfill to provide flood protection. /c. The prohibition of liquid waste. d. Surface water be controlled by drainage ditches and impervious cover. e. Groundwater monitoring be accomplished by sampling from a well on the property. 2. Joseph Wirth, Jr. , Assistant City Engineer for Tracy, November 28, 1972, letter to the Executive Officer contains a statement that a 300-foot well at the site encountered a small quantity of water at 40 feet and has since been abandoned and filled. Further., he includes a flood frequency analysis that indicates that a l0O-year flood flow would be on the order of 5,000 cubic feet per second. The letter did not, .however, include an indication as to the elevation of the 100-year flood flow relative to the solid waste , disposal site. 3. Waste Discharge Order No. 76=155 (typical Class II-2 solid waste disposal site requirements) was adopted by the Regional Board in 1976. The monitoring program included 'quarterly sampling of a downgradient water well.