SITE INFORMATION AND CORRESPONDENCE FILE 1

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Mr. George Montross July 235 2003 City of Stockton, Public Works Department Encroachment Permit No, 66608 Extension Request Page 2 It would appear that the patch in the asphalt may be the location that Teichert left un- surfaced for this monitoring well vault installation, since it is within a foot of the location marked by the surveyor retained by ARCO . Both the patch and the survey location are shown on the attached photograph. Without first exposing this monitoring well, the method of abandonment cannot be specified. Therefore, Stratus proposes that the encroachment permit be modified to allow Stratus time to schedule a licensed drilling contractor to remove the area of the patch, as shown in the attached photograph, to determine if this monitoring well is within the confines of the patch. If the well can be accessed in the patch area, the well would be abandoned by the appropriate method of either pressure grouting or over-drilling the well. If the well is not in the confines of the patch, then Stratus proposes to enlarge the patch to include the area as marked by the surveyor. The enlarged area will not exceed 36 inches in diameter. Once the well is abandoned, the area will be cold patched, as the abandonment activities could exhaust all the hours allowed on the encroachment permit.. Stratus would then schedule a saw cut/coring contractor to clean cut the effected asphalt, and an asphalt contractor to complete the patching of the effected area. Stratus does request that the 50- foot grinding of .02 inches be waved, based on the already existing rough patch at the well location. Stratus proposes to complete these tasks by first setting up for the closure of the No. 1 and No.2 lanes of eastbound Hammer Lane, as shown on the original traffic plan drawn by Direct Traffic Control, in order to complete the well abandonment and temporary patch. The second closure would take place within 14 days for the purpose of making clean cuts of the effected area and to allow for a licensed asphalt contractor to patch the effected area. If you have any questions, or require further information, please contact Doug Foland at (530) 676-6003 , or Jay Johnson at (530) 676-6000. Sincerely, F STRATUS VIRONME AL ' Doug Foland Ja . Jo son, R.G. � Engineerin Technician Project anager Attachments : Copy of Application for Encroachment Permit No , 66608 Photograph of the surveyed well location and asphalt patch cc : Mr. Chuck Carmel, Atlantic Richfield Company Mr. Mike Infuma, San Joaquin County PABp-Arco for URS\2I30\Correspondence\Stockton encroachment permit ext..doc