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11i 1 NuStar Terminal Operations Partnerships LP 3505 Navy Drive Mr. Ray Smith Page Two includes six aboveground storage tanks (ASTs), two underground storage tanks (USTs) (UST Nos. 4 and 6), a fuel-loading rack in the central portion of the site, two metal buildings in the southeastern portion of the site.' The initial release was reported in 1965, the ground water treatment system and associated piping were installed in June and July of 2003 and the open case was closed in May 2014. The tank bottom water collection system is planned to be abandoned in place. This assessment was conducted to evaluate subsurface conditions in the immediate vicinity of the underground storage tank and associated piping. The tank is a Xerxes double walled fiberglass 6,000-gallon capacity storage tank installed in 1987. The tank was used for the dewatering of petroleum tank bottoms from the on- site above ground storage tanks (AST's). The UST does not meet current UST spill containment regulations. There is no history of any unauthorized releases from this tank. The tank will be triple rinsed and all contents removed. The tank will subsequently be filled with 10 sack controlled density sand slurry and permanently closed. Soil samples were collected prior to abandonment and analyzed to ascertain potential hydrocarbon concentrations prior to tank abandonment. SCOPE OF ACTIVITIES HEALTH AND SAFETY PLAN A site specific Health and Safety Plan detailing known or potential hazards and emergency response procedures was prepared prior to field operations. All on-site personnel reviewed the plan and a "tailgate" safety meeting was conducted prior to initiation of field activities. The plan was maintained on-site throughout the duration of field activities. i UNDERGROUND SERVICE ALERT NOTIFICATION Prior to conducting any subsurface activities,the areas to be investigated was marked and Underground Service Alert(U.S.A.)was notified to locate potential utility conflicts. The USA ticket number for this project is X104103083. DRILLING AND SAMPLING PROCEDURES A total of 2 geoprobe exploratory borings and 22 hand auger borings were completed. Locations are shown in Figure 2. The borings were advanced to 5 feet below surface grade (BSG) for the hand auger locations and to 15 feet drilled depth(14' BSG) for the geoprobe borings. The borings were divided into two categories depending on the assessment goal associated with each boring. Borings designated PL-1, WGR Southwest, Inc. 11021 Winners Circle, Suite 101 - Los Alamitos, CA 90720 - (562) 799-8510