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EOMUNo Q.BROWN JR. <br /> OOYERNOR <br /> MATTHEW RomousZ <br /> SECRETARY FOR <br /> Water Boards ENVIRONMENTAL PROTECTION <br /> Central Valley Regional Water Quality Control Board <br /> REQUIREMENTS FOR MONITORING WELL INSTALLATION WORKPLANS, <br /> D <br /> MONITORING WELL INSTALLATION REPORTS <br /> SECTION 1 - Monitoring Well Installation Workplan <br /> A. General Information: <br /> 1. Purpose of well installation and sampling/analysis project <br /> 2. Site location map <br /> 3. Copies of County Well Construction Permits (to be submitted after workplan review) <br /> 4. New monitoring well locations and rationale <br /> 5. Equipment decontamination procedures <br /> 6. Health and safety plan <br /> 7. Topographic map showing any existing wells, proposed wells, waste handling <br /> facilities, utilities, and other major physical and man-made features. <br /> B. Drilling Details: <br /> 1. Drill rig and contractor <br /> 2. Sampling intervals and logging methods. <br /> C. Monitoring Well Design—Graphic andDescriptive: <br /> 1. Casing diameter and centralizer spacing (if needed) <br /> 2. Borehole diameter <br /> 3. Depth of surface seal <br /> 4. Well construction materials <br /> 5. Diagram of proposed well construction details <br /> 6. Type of well cap, bottom cap either screw on or secured with stainless steel screws <br /> 7. Size of perforations and rationale <br /> 8. Grain size of sand pack and rationale <br /> 9. Thickness and position of bentonite seal and sand pack <br /> 10. Depth of well, length and position of perforated interval. <br /> D. Well Development: <br /> 1. Method development <br /> 2. Method of determining when development is complete <br /> 3. Parameters to be monitored during development <br /> 4. Development water storage and disposal. <br /> E. Well Survey Coordinates, horizontal and vertical: <br /> 1. Name of the Licensed Land Surveyor or Registered Civil Engineer <br /> 2. Well features to be surveyed (i.e. top of casing, horizontal and vertical <br /> coordinates) <br /> 3. Horizontal (within 0.1 foot) and vertical accuracy (vertical must be at least 0.01-foot). <br /> KARL E. LONGLEV SCD, P.E.,CHAIR ( PAMELA C. CREEDON, EXECUTIVE OFFICER <br /> 11020 Sun Center Drive#200,Rancho Cordova,CA 95670 1 www.waterboards.ca.gov/contralvalley <br /> Hk CYCIkU VAYtN <br />