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VSB5 was added to vapor extraction well P3-Swarm on 7/27/92 . The swarm in combination with VSBS has produced, as of 07/19/93 , 882 Pounds of hydrocarbons, an additional 324 pounds since operation under the Authority to Construct, VSB5 is currently producing 0 . 15 pounds per day, see Table 1 On 8/26/92 , the P3-Swarm was disengaged from the vapor extraction system Before being shut down on 7/24/92, vapor extraction well EX produced 131 . 31 pounds of hydrocarbons, 4 18 pounds of which were produced under the Authority to Construct, see Table 1 As of August 26, 1992 , MW1 had produced a total of 2534 pounds, of which 69 75 pounds have been produced during operations under the Authority to Construct MW1 was shut down on 7/24/92 . As of July 19, 1993 , MW5 has produced a total of 10489 pounds, of which 2045 pounds have been produced during operations under the Authority to Construct MW5 was transferred to use as a clean air infection well on 7/24/92 On 7/27/92 , MWS was shutdown as an air injection well MWS was again hooked up as a vapor extraction well on 8/03/92 On July 27, 1992, VSB3 , VSBS and VSB11 were added to the system As of June 18, 1993 , these wells had produced the following amounts of gasoline VSB3, 43 pounds, VSB9, 1160 pounds, and VSB11, 526 pounds Monitor well, MW 3 has not been used for vapor extraction during the operations under the Authority to Construct Currently the site is producing 4 01 pounds per day of TFH hydrocarbon The current CO2 emission rate indicates that approximately 42 6 pounds of hydrocarbon are being destroyed per day by means of in-situ biological and/or chemical oxidation. i If you have any questions, please call (916) 668-5300 R Butler Geologist cc Ms Mary Meays, San Joaquin County Health Mr Gary Reeves, San Joaquin Valley Unified Air Pollution Control District • page 6 of R604 , 07/09/93 x