SITE INFORMATION AND CORRESPONDENCE

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` wNicole R. Gleason, Downeyand Attorneys, LLP Page 2 Re: Heritage Square, 640 N. San Joaquin St., Stockton • On May 291h, two permit applications for geoprobe borings were submitted to the EHD by CET. The EHD staff co.rtacted CET and requested a work plan and other required documents. • A "Soil Investigation Work Plan" was submitted on June 4, 2002, which proposed borings adjacent to both of the UST locations (east of,Women's Center and north of l Heritage Square) and associated piping. The work plan reported that a product line had been pierced during the geotechnical boring performed in February 2002, and results of a soil sample analyzed at that time were included. The work plan also stated that diesel was detected at 3,800 ppm in a sample collected beneath the Women's Center UST on May 23, 2002. • On June 5th, EHD staff contacted CET regarding disparities between the work plan and the pen-nit application and advised CET that if contamination at the site was known, that all work performed would need to meet the California Health and Safety Code (HSC) "necessary and adequate' requirement. • Also on June 5`h, EHD staff received a call from David Warwick, owner of the Heritage Square property. He stated that his parcel contained the UST located on the north It side of the Heritage Square building, that the UST located on the east side was on the parcel owned by the Women's Center, that the parking lot was located on a third parcel,which was jointly owned by him and the Women's Center. He said there was no known contamination on his parcel or in the parking lot. He is just trying to evaluate if contamination exists from his UST or if it has migrated into the parking lot from the Women's Center UST. He was advised that this is not what the work plan indicated. He said he would contact CET. T ..1 „ F • CET called to discuss the proposed.work and.stated they would submit a new.work plan. I • A "Phase IT Environmental Site Assessment Work Plan"was submitted on June 6, 2002. This work plan clearly stated that the purpose of the work plan was to investigate if a release of hydrocarbons from the'UST located north of Heritage Square had occurred and to investigate whether'contamination from the UST located on the Women's Center property had migrated onto the jointly owned property(the parking lot) east of the Heritage Square and Women's Center buildings. CET was advised that the EHD would accept results of sampling performed under piping Iocated within the Heritage Square building as part of a plan to close the piping in place, provided analysis for lead (Pb)was performed. 4 • On June I Oth, EHD staff witnessed collection of soil samples at the northern UST location and beneath the piping in the basement.' • On June 11 th, soil sampling at the.Women's Center UST location were witnessed. • On July 12, 2002, the EHD received an"Underground Pipe Investigation and Removal Report"dated June 24, 2002; a"Phase II Environmental Assessment Report"dated July, 3, 2002, and an "Underground Storage Tank Closure in Place Work Plan"dated July 8, 2002, from CET. • The report of the Phase II Environmental Assessment was reviewed by EHD staff and discussed with Central Valley Regional Water Quality Control Board staff on July 17, 2002. A decision on whether a"no further action" finding could be made was postponed pending results of the.angle borings to be collected from below the tank as part of the closure in place project. � Fx M rrogram Manager