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Q <br /> 1 �E <br /> Measurement is obtained by attaching a water manometer <br /> to the sample port of the PVC cap and reading <br /> millimeters vacuum at the well . <br /> 2 . Depth to water is then measured and recorded after the <br /> Iivacuum measurement . <br /> 3 . The well is purged 40-65 gallons using LTT vacuum pump <br /> with dedicated 1 inch PVC stinger to vacuum lift the <br /> water. All purged water is placed into the 1000 gallon <br /> ConVault in the treatment compound. <br /> 1 <br /> 4 . A orifice manifold placed onto the well casing, with <br /> sample ports to measure the differential pressure <br /> 'across the orifice and to measure vacuum generated from <br /> the LTT vacuum pump. LTT pulls a vacuum on the well <br /> for two hours and obtains a starting vacuum and <br /> differential reading, a one hour vacuum and <br /> differential reading and a two hour vacuum and <br /> differential reading. A tedlar bag sample of the vapor <br /> stream pulled from the well is obtained at the one hour <br /> measurement and delivered to WEGE for analysis of CO2, <br /> TPHg and BTEX. <br /> 5 . The ending depth to water is measured and the well is <br /> secured. <br /> As of January 30, 1996 the bio-venting of MW8 has removed 2 . 27 <br /> pounds of gasoline range hydrocarbons and a total of 235 . 69 <br /> pounds of carbon, as CO2, see Table 4 . <br /> MW12 <br /> Placement of the Regenesis Oxygen Release Compound, ORC filter <br /> socks into MW12 for approximately six months. <br /> 1 . Prior to placement of ORC socks, depth to water, and <br /> sampling of the well will be performed. We will <br /> schedule the quarterly sampling for this time . <br /> 2 . Dissolved oxygen will be measured from samples taken i <br /> from MW5, MW8, MW11 and MW12 . <br /> 3 . Placement of ORC socks will be through 10 feet of the <br /> saturated zone of the well, (50 feet below ground <br /> surface to 60 feet below ground surface) . <br /> 4 . Measure dissolved oxygen content monthly in wells MW5, <br /> MW8, MW11 and MW12 . <br /> 5 . Remove the ORC socks from MW12 one week prior to ground <br /> water sampling. Replace the ORC socks into MW12 after <br /> sampling has been completed. <br /> 6 . After six months, ie . two quarterly sampling events, <br /> complete a report of findings as to the effectiveness <br /> PAGE2 R603-ORC MW12 2-8-96 <br />