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WSW <br /> 1 .0 INTRODUCTION/HISTORY <br /> .. BJJ Company, Inc. operates a trucking facility located at <br /> 2431 East Mariposa Road, Stockton, California (Figure 1 ) . <br /> Three underground fuel storage tanks are maintained at the <br /> facility. Two of the tanks are newly installed double- <br /> walled tanks used to contain diesel for company trucks. <br /> These tanks are located near the facility entrance. The <br /> other tank is a 3500 gallon underground tank located <br /> partially beneath one _ _tN maintenance buildings. This <br /> tank is the subject tank proposed for in-place abandonment. <br /> Figure 2 depicts the tank and piping locations relative to <br /> other facility features. <br /> Although this tank is approximately 43 years old, there have <br /> been no indications of product loss or tank leakage. A <br /> monitoring program was implemented beginning in 1985, <br /> pursuant to local and state requirements for all underground <br /> storage tanks. Annual tank system tightness tests utilizing <br /> static pressure by applied product head have been conducted <br /> as part of the monitoring program. The most recent test was <br /> conducted on March 16, 1990. These tests have consistently <br /> found the tank system to be "tight" pursuant to local and <br /> state requirements and NFPA guidelines. Tank test results <br /> from 1989 and 1990 tests are presented in Appendix A. Daily <br /> volume gauging by "sticking" the tank and inventory record <br /> checks are also conducted as part of the monitoring program. <br /> Records have reflected no observable losses over the <br /> monitoring period. <br /> Due to the location of the tank, BJJ Company, Inc. requested <br /> and received conditional approval for in-place abandonment <br /> from the Montezuma Fire Protection District. Conditions of }� <br /> the Fire District approval include: <br /> 1. The tank must be rinsed and filled with a substance <br /> acceptable to existing codes. <br /> 2. All openings in the tank must be sealed to prevent <br /> possible vapors from entering adjacent buildings. <br /> 3. All other requirements from other government agencies <br /> must be compiled with as requested by those agencies. <br /> A copy of the Fire District ' s letter is presented in <br /> Appendix A. <br /> 1 <br />