SITE INFORMATION AND CORRESPONDENCE

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r i DESCRIPTION OF EVENTS Domestic well at a contaminated Bulk Fuel Terminal at the Port (Navy Drive), well log from DWR does not fit the location or physical description as 17A1. Four feet (thick) of free phase floating product is found on the surface of the static water level measured at 5 feet bgs. The product is analyzed and appears to be lubricating oil (no surprises yet). The well is described as 200 feet deep, an 8" internal casing and a 10" conductor/outer casing. No such casing is found. The well is tagged at 97' bgs summer of 1997 as a total depth. Fall of 1997 CVRWQCB approves a plan to destroy the well by perforating the well from the bottom up in three foot intervals, followed by tremied well capped pressure grouting at 35-45 psi. Fall of 1997 the well is tagged and measured at 55' bgs. Because many questions hover above without answers, a down hole video log of the well is performed which clearly shows significant casing deterioration at 54' bgs and silted in conditions below that point. The CVRWQCB then approves an amended plan to perforate the well beginning at 55' from the bottom up in three foot intervals, followed by tremied well capped pressure grouting at 35-45 psi. PHS/EHD recommends the well be jetted out to remove the silt prior to destruction, however, this recommendation is not included in the conditions and the time the well destruction permit is issued. A permit is issued by PHS/EHD given these conditions. ACTUAL BORE HOLE DESTRUCTION PROCESS Rusted steel casing, 55 feet deep, with 10"diameter, 8"casing Given the perforations/corrosion observed by down hole video, the grout mixture is restricted to neat cement to aid in placement and assist pumped grouting material movement into the formation voids and annular space. No pressure cap was applied and the casing was not perforated. The C-57 licensed contractor and site geologist are told by PHS/EHD that this is a significant variation on the permit conditions and the operation should not proceed. The contractor disregards this verbal directive (in the presence of two trainees from PHS/EHD) and proceeds suggesting that the CVRWQCB has given approval for this variance by phone. PHS/EHD cautions the contractors, and asked them to produce the approval, they indicate it will be available in written format later. The contractor installs a tremie pipe to 55'bgs and place 1.125 yards in the hole and 1 yard of concrete in the well head excavation. The grout drops to 15'bgs and they have no concrete left. Against the verbal directives by PHS/EHD the C-57 removes the tremie tube and pulls the casing out in pieces. The total length removed is 44 feet. On the outside of the casing is what smells and looks like petroleum hydrocarbon contamination observed and acknowledged by all in the field that day. An additional 6 yards is placed in the hole hours later and the grout still dropped five feet. 1t is raining on Friday at 4:30 pm and no batch plants are open. They leave the hole as is. PHS/EHD refuses to sign off on the destruction permit but informs the contractors that they will be required to report the processes used as described and at that it is unlikely that PHS/EHD will sign off unless they have justification and rationale acceptable to PHS/EHD which clearly indicates that the unapproved modifications were effective. Tesoro Well Destruction Notes 6-22-98 lI