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the vertical datum)may be greater than 0.1 ft. In addition to the above <br /> coordinates and elevations, the Contractor shall provide the following <br /> information: <br /> 1. The name of the firm providing the surveying data <br /> 2. The name and license number of the individual responsible for the <br /> surveying <br /> 3. The date on which the surveying was completed <br /> 4. The name (brand) and model number of the GPS equipment used <br /> 5. The accuracy range (+/-)of the latitude and longitude reported in <br /> centimeters at a 95%confidence interval <br /> 6. The accuracy range(+/-)of the absolute elevation reported in <br /> centimeters at a 95%confidence interval <br /> B. Contractor shall survey the following survey points: <br /> 1. Ground elevation ,based on the elevation of the carriage bolt <br /> installed in the cement. <br /> 2. Elevation of the top edge of the northern facing side of the riser <br /> pipe. Contractor shall mark that location <br /> 3. Elevation of the center of the protective housing lid. <br /> Contractor shall provide a list of the wells and the coordinates and <br /> elevations of the well survey points. <br /> 3.05 NOT USED <br /> 3.06 WELL ACCEPTANCE <br /> A. The Contractor shall insure that the sanitary seal placed above the <br /> bentonite seal is inspected by the Environmental Health Department. <br /> The Contractor shall properly construct,install,develop, and test all <br /> monitoring wells according to the requirements of this specification so that <br /> they are suitable for the intended purpose. If the Contractor installs wells <br /> that are not functional or not in accordance with these specifications,the <br /> County will disapprove the well and direct the Contractor to repair or <br /> replace it, and to abandon the disapproved well in accordance with this <br /> specification. <br /> 3.07 SITE CLEANUP <br /> A. After completion of the work,tools, appliances, surplus materials, <br /> temporary drainage, rubbish, and debris incidental to work shall be <br /> removed. Excavation and vehicular ruts shall be backfilled and dressed to <br /> Foothill Landfill Site Improvement Project IO - GROUNDWATER MONITORING WELLS <br /> San Joaquin County Public Works Section 02522 <br />