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:«* CARIBBEAN HYDRO-TECH. INC. P.O. BOX 2070 • KINGSHIU. • ST. CROIX • U.S.V.L 00851-2070 (809) 778-6551 • FAX 778-5375 Clifford Crooke, Env. Specialist III Oiv. of Environmental Protection Dtspt. of Planning and Natural Resources Nisky Center, St. Thomas USVI •- r Re: Uestern Auto Site 'Investigation Dec. 4, 1992 Oea r S i r , •;•••. • • • ' . - •. • : 1 - •. • • .- . •= ... . As planned, site investigations on the location of suspected underground tanks formerly operated by the Uestern Auto store located 'at Four Uinds .-Plaza , .8392 :Anna's Retreat, St Thomas continued this week. 'Following your suggestion, ;I continued the effort "to locate the UST '•;-•.•• near ithe Western Auto repair bays, reportedly used for diesel fuel storage - :for • the .Uestern Auto generator. Ue also investigated the cap protruding from the ramp area located to the north and west of the Uestern Auto repair bays . The site investigation proceeded utilizing similar investigative methods and quality control/quality assurance as described in my letter of'Nov: 28, 1992: Generator Room: The cap that protrudes from the ramp located a:. the northwest corner of the area was removed. A probe was inserted into the opening. The apparent tank was filled with i-^r-cJ and is approximately (appx . ) 5 feet (ft.), two inches deep. /-. :••.>> nu. i 1 i 1 iter (mi, bottle was fiileo with s-2...-j. for the week of Dec. 6, 1992. investigacions are planned 2. TW-4: Located 17 ft North and 10 ft. west of the first bay (appx. halfway between the wall and TU-3). Drilled to refusal at 30 inches. A brown-gray clay was encountered with a slight hydrocarbon odor. Samples were taken for TRPH, oil and grease, and EPA analyses 8010, 8020 and 8100. 3. TU-5: Located 17 ft. north and 6 ft. west o' the first bay. Drilled to refusal at 36 inches. Gravel was encountered under the concrete pad. Uater was encountered appx. 1.5 ft. below the surface. As in TU-2, water with a hydrocarbon odor and oily aPpearance was encountered and samolec for TRPH, oil and grease *•>••*. ^.r'rt o r.«ji i yses o-~_ , frw^ * a no e-j.^ ^ o^u*sO<jii Co—."i lysis from TU-4 ) . Innovative Water Systems TUT OO4 1959 *64532* 64532 L r 4. Tank *2: An apparent vent had been located at the southeast corner of the existing above-ground diesel tank that stands in -a concrete containment wall north of the bays. A trench was dug in the southeast corner of the containment wall where copper and pvc conduit were found. There appeared to be an old vent and/or fuel lines leading to the southwest. The lines were traced to a location appx. 11 ft. west and .12 ft. north of the first bay. Upon further .excavation a 2 "ft. X 2 f t. opening was created. A metal fitting was found with a copper line running back to the building. This fitting was removed. A probe was inserted into the tank. The tank appears to be three ft. deep. . It contained appx. 2.5 ft. of hydrocarbon or hydrocarbon-like product. Further excavation to determine the size of the tank and sampling to determine the contents of the tank will be performed the week of Dec. 7, 1992. Mr. Crooke was called at the St. Thomas-DPNR -office on Friday, December 7, 1992.: "I reported -the findings of my'investigation to date. Further investigations are planned for the week of Dec. 6, 1992. Please contact me with any questions or- comments. """• Sincerely, Bruce K. Green ':•-'. i- cc: J. Dema TUT OO4 I960