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Brinderson Constructors, Inc. <br /> 3070 Bay Vista Ct., Suite E <br /> BRINDERSON Benicia, CA 94510 <br /> Tel: 707.752.8000 <br /> an AEG10N'mmnxry Fax: 707.752.8001 <br /> www.brinderson.com <br /> January 24, 2020 <br /> Attention : Environmental Health Department San Joaquin County <br /> Subject : Shell Oil Products UST TK 5 IN 0121005 Closure in Place Tank Sealing plan <br /> Dear San Joaquin County, <br /> Scope of Work <br /> • Install new contact water sump T-25 , contact water transfer pumps P- 103 and P- 104 <br /> near the existing UG -5 tank as shown on drawings . <br /> • Remove P- 18A Discharge piping up to tie in point TP-01 . Drain piping up to tie in points <br /> TP-02 and tie in point TP-03 as shown on drawings P-050 and P-051 . <br /> • Install new discharge and drain piping spools per drawings P- 100 and P- 101. <br /> • Hydro test all new piping. <br /> • Abandon existing contact water tank UG-5 in place . <br /> • Tie in subgrade 4" drain line from loading rack to new sump . <br /> • Triple clean tank <br /> 0 Have marine chemist verify tank is clean . <br /> • Fill tank with flowable fill slurry ( low strength lean concrete) <br /> Steps Tanks will be sealed <br /> 0 Existing tank is a 6000-gal fiberglass tank. Tank has a fiberglass 2" inlet piping. It has a <br /> vertical pump for outlet pump off. Tank has a 14 5/16-man way to access the vertical <br /> PUMP . <br /> • Step one tank will be taken out of service . <br /> • Step two outlet piping, and vertical pump will be removed <br /> Confidential <br />