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EME •� °. ��.a�. ,w .u."'..."h, , '6:"..., TES., :,.;X+w "° �yXay:yY;dr Review of Tank Closure Data Laura Scudder's Tracy, California Facility for Laura Scudders, Inc. 1.0 Introduction On behalf re Laura Scudder ,s Inc. and their tank removal subcon-- tractor, Precision Industr � TON) was asked to review s, Inc., ROY T'• WESTON, INC. for the Laura Scudders Tracy-11 tank closure information (WiS - information in an effort to obtaFac closure for the tank a removal �' and to summarize the efforts at the plant. al Laura Scudders, Inc. 's removed three undergroundsubcontractor age Precision Industries The first tankuel at the Trac ' has The first remaining (Tank T2) was removed in September 1987 plant. two tanks (T1 and T3) were removed in May The each of these tanks, a discussion of the tank closure and sampling analytical results is Y 1988. ,For information discussed below has been resented below. activities San Joaquin Local previouslyAll to the Health District and co submitted to the Appendices A and $. pies are contained in • z.0 Background 2.1 Tank T2 Tank T2 was a 10,000 gallon diesel storage tank locate east sie ohe main in Tracy, California plant building at the df tLaura Scudders ng the In August 1987, after discoveringana Possible tank line Industries to excavate and remove thleak, Laura eutank On Au gust a tank c contacted Precision closure application was submitted to the San Joaquin Health Department. The , 1987, 1987. application was approved on August o25, In early September 1987 lines were removed. , the tank (T2) and associated beneath the tank bottomon September 2, 1987 and was analyzed from Product singleoil sample (LS) was collected from Canonie Environmental Services laboratory by xylene and ethylbenzene y for benzeneYtoluene, (TPH) • Analysis of this TXsam led Total Petroleum Hydrocarbons toluene at 22 mg/Kg TPH at 8200 m Kindicated concentrations of MVX9 were present. Upon discovering the concentration of TPH with additional soil sampling was conducted. n the soil lized to collect two soil samples from depths 7a auger was mule, the tank bottom which was samples p and 12 Bath described in the Decemb_er_9 below ' beneath The-sail -samples collected from the letter -antAivities - -- are - ----- - - mg/Kg of TPH for the south boron borings revealed Appendix A. g (19S) . Y 0.016.