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ATTACHMENT B <br /> REQUIREMENTS FOR MONITORING ELL ABANDONMENT REPORTS <br /> After abandonment of any groundwater monitoring well, the Discharger shall submit a report containing, <br /> at a minimum, the information listed in below. All reports must be prepared under the direction of, and <br /> signed by a registered geologist or civil engineer licensed by the State of California. <br /> Minimum Contents for a Monitoring Well Abandonment Report <br /> A. General Information <br /> 1. Purpose of the well abandonment project. <br /> 2. Brief description of local geologic and hydrogeologic conditions. <br /> 3. Identification and number of monitoring wells abandoned. <br /> 4. Topographic map showing facility location, roads, and surface water bodies. <br /> 5. Scaled site map showing existing wells, all abandoned wells, surface water bodies, and . <br /> direction and gradient of groundwater flow. <br /> B. Original Well Construction Details <br /> 1. Well numbers and dates installed. <br /> 2. Diagram with well construction details. <br /> 3. Copy of original boring logs. <br /> C. Compliance with Requirements of California Water Well Standards, Section 23' <br /> 1. Results of the research or investigation to determine the wells condition, construction <br /> details, and whether there are obstructions that will interfere with the process of filling <br /> and sealing; . <br /> 2. Discussion of filling and sealing conditions; <br /> 3. A discussion of the abandonment and materials, cement grout, and the distances of <br /> placement; and <br /> 4. Diagram with placement details, the depths of placed materials, and types of material <br /> placed for abandonment. <br /> D. County Requirements <br /> 1. Copy of permit. <br /> 2. Signed copy of the County's observations during the abandonment. <br /> E. Table with Well Survey Data and Construction Details <br /> 1. Coordinate system, epochs, and northing, easting, and elevations. <br /> 2. Top of casing and ground surface elevations. <br /> 3. Date surrey performed. <br /> 4. Top and bottom of screen, screen interval, and pump intake. <br /> The California Department of Water Resources Water Well Standards,Section 23 is available at <br /> http://www.water.ca.gov/groundwater/well info and other/california well standards/wws/wws combined sec23 html <br /> KARL E. LONGLEY SCD, P-.E.,CHAIR I PAMELA C. CREEDON P.E.,BCEE,EXECUTIVE OFFICER <br /> 11020 Sun Center Drlve#200.Rancho Cordova,CA 95670 I.www.waterboards.ca.gov/centralvalley <br /> C'RECYCLED PAPER <br />