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ATTACHMENT A -3- <br /> MONITORING WELL WORKPLAN AND REPORT REQUIREMENTS <br /> SECTION 2 -Monitoring Well Installation g2port <br /> The monitoring well installation report must provide the information listed below. In addition, the report <br /> must also clearly identify, describe, and justify any deviations from the approved workplan. <br /> A. General Information <br /> 1. Purpose of the well installation project, <br /> 2. Brief description of local geologic and hydrogeologic conditions encountered during <br /> installation of the wells, <br /> 3. Number of monitoring wells installed and copies of County Well Construction Permits, <br /> 4. Topographic map showing facility location, roads, surface water bodies, <br /> 5. Scaled site map showing all previously existing wells, newly installed wells, surface <br /> water bodies, buildings, waste handling facilities, utilities, and other major physical and <br /> man-made features. <br /> B. Drilling Details—Narrative and Graphic <br /> 1. On-site supervision of drilling and well installation activities, <br /> 2. Drilling contractor and driller's name, <br /> 3. Description of drilling equipment and techniques, <br /> 4. Equipment decontamination procedures, <br /> 5. Soil sampling intervals and logging methods, <br /> 6. Well boring log: <br /> a. Well boring number and date drilled <br /> b. Borehole diameter and total depth <br /> C. Total depth of open hole (same as total depth drilled if no caving or back-grouting <br /> occurs) <br /> d. Depth to first encountered groundwater and stabilized groundwater depth <br /> e. Detailed description of soils encountered, using ASTM D2488-93 Method for <br /> Visual Classification, Standard Practice for Description and Identification of Soils <br /> (Visual-Manual Procedure) for Field Work. <br /> C. Well Construction Details—Diagram and Narrative <br /> 1.Well construction details <br /> a. Well number, date started, date completed, geologist's name <br /> b. Total depth drilled <br /> C. Drilling Contractor and driller name and address <br /> d. Depth of open hole (same as total depth drilled if no caving occurs) <br /> e. Method and materials of grouting excess borehole <br /> f. Footage of hole collapsed <br /> g. Length of slotted casing installed <br /> h. Depth of bottom of casing <br /> i. Depth to top of sand pack <br /> j. Thickness of sand pack <br /> k. Depth to top of bentonite seal <br /> 1. Thickness of bentonite seal <br /> M. Thickness of concrete grout <br />