SITE INFORMATION AND CORRESPONDENCE FILE 2

Home Browse Search

a� 6 USA PALISADES -GAS AND WASH Co RPol:ATjoN Hil , CA 91301-43 July 28,2004 30Pho e: (818)865-9200 101 Agoura Court, Ste. 200, Agoura Fax(81 8)865-009211 Mr. Terry Brazell. AUG 0 9 2004 Underground Storage Tank Program ENVIRONMENT HEALTH State Water Resources Control Board PERMIT/SERVICES Division of water Quality 10011 Street Sacramento,California 958,14 SUBJECT: ADDITIONAL INFORMATION LOCAL OVERSIGHT PROGRAM,SITE No. ion EXXON#737081,COUNTRY CLUB BOULEVARD STOCKTON,CALIFORNIA,SAN JOAQUIN COUNTY FILE NO.P03-215 Dear Mr.Brazell: Palisades Gas and Wash(Palisades)recently conducted an inspection of the condition of the on- site groundwater monitoring wells at the above referenced facility. The inspection report documents numerous deficiencies regarding the condition the of wells;installed and maintained by ExconMobil Corporation(ExxonMobil),including well VEW 3 identified by the SJCEHD as the reason for filing the URR On March 5,2004 Stratus Environmental;Inc.(Stratus)visited the facility to inspect and document the condition of the onsite wells. Stratus noted that five of the eight wens ,the well vaults were found to be flood inspection report). Upon closer inspection �indicating a faulty watertight seal.The report documents mud staining along the casing inner wall in well MW-3,indicating that the protective well plug had failed. It was also noted that the well vault for VEW 3 was flooded. As see in photos#14 and#15,the water level appears to coincide with the level of well casing. These water levels and the evidence of 1 WIC + s�•it��'Y a,.,,,e ,,, +i, P14- in VEW-3 could also have failed,and that surface water subsurface.The report also notes that well VEW 1 did not have anroto the slip cap for protection. expanding Ply but used a If any gasoline residue exists on the surface from the customary operation of the station,the unsecured wells(MW-3,VEW 1,and VEW-3)could act as vertical conduits to the subsurface. As long as these well conditions persist,the presence of dissolved petroleum hydrocarbons in the groundwater does not automatically suggest continued impact from pre-existing sources. Until the well vaults are repaired,they pose a threat to groundwater quality. it is the the well owner responsibility of (ExxonMobil)to properly maintain the wells and any release into the subsurface from improperly maintained wells is the responsibility of the well owner to cleanup.