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California Regional Water Quality Control Board % - <br /> Central Valley Region <br /> Steven T.Butler,Chair <br /> Winston H.Hickox Gray Davis <br /> Secretaryfor Sacramento Main Office Governor <br /> Environmental Internet Address: bttp://w .swrcb.ca.gov/— gcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> ATTACHMENT.C <br /> ITEMS TO BE INCLUDED IN A <br /> MONITORING WELL INSTALLATION WORKPLAN AND A <br /> MONITORING WELL INSTALLATION REPORT OF RESULTS <br /> Prior to installation of groundwater monitoring wells, the Discharger shall submit a workplan containing <br /> the minimum listed information. Wells may be installed after staff approve the workplan. Upon <br /> installation of the monitoring wells, the Discharger shall submit a report of results, as described below. <br /> All workplans and reports must be signed by a registered geologist, certified engineering geologist, or <br /> civil engineer registered or certified by the State of California. <br /> Monitoring Well Installation Workplan <br /> A. General Information: <br /> Monitoring well locations and rationale <br /> Survey details <br /> Equipment decontamination procedures <br /> Health and safety plan <br /> Topographic map showing any existing monitoring wells,proposed wells, waste handling <br /> facilities, utilities, and other major physical and man-made features. <br /> B. Drilling Details: describe drilling and logging methods <br /> C. Monitoring Well Design: <br /> Casing diameter <br /> Borehole diameter <br /> Depth of surface seal <br /> Well construction materials <br /> Diagram of well construction <br /> Type of well cap <br /> Size of perforations and rationale. <br /> Grain size of sand pack and rationale <br /> Thickness and position of bentonite seal and sand pack <br /> Depth of well, length and position of perforated interval <br /> D. Well Development: <br /> Method of development to be used <br /> Method of determining when development is complete <br /> Method of development water disposal <br /> E. Surveying Details: discuss how each well will be surveyed to a common reference point <br /> California Environmental Protection Agency <br /> eaerap�i FlIUWORMSmavvell requ.da <br /> �aRecycled Paper <br />