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IOARO OF TRUSTEES <br />James Culberlson, Pres. <br />Patrlcla E. Vannuccl, Secy. <br />Anthonells Van Spronsen <br />Earl Plmentel <br />Fern Supboo <br />Oanlel L. Floras <br />John D. Mast. M.O. <br />William J. Wade <br />Mary Anna love <br />Facility Name <br />Address <br />Date of <br />Tank( s)# <br />SAN JOAQUIN LOCAL HEALTH DISTRICT <br />1601 East Hazelton Avenue, P. O. Box 2009 <br />Stockton, Callfornla 95201 <br />209/466-6781 <br />Jopl Khanna. M.D.. M.P.H.. District Health Officer <br />SERVING <br />City of Lodi <br />Sen Joaquin County <br />City of Escalon <br />City of Manteca <br />City of Ripon <br />City of Stockton <br />City of Tracy <br />San Joaquin County <br />San Joaquin County <br />MONITORING ALTERNATIVE #8: Tank Gauging <br />qualifying status: 4�-tovernmental agency <br />Small business <br />Written contract for removal or replacement <br />Limited to underground storage tanks where the liquid level in the tank can be measured <br />to an accuracy of -1% of the tank volume or 50 gallons.- whichever is less. when the tank <br />is half full. <br />This monitoring alternative shall include: <br />�nnual precision testing on tank(s) and piping. __.. <br />ank gauging performed as follows: <br />_ZTank must be capable of being secured to prevent unauthorized inputs and <br />withdrawals. <br />Tank must have no inputs or withdrawals for a period of 12 hours three times <br />per week. <br />�nk must have no inputs or withdrawals for at least a 48 hour period (2 days) <br />at the end of consecutive periods lasting up to 7 days. <br />(For example: Tank in use Monday through Friday, then locked <br />over weekend). <br />quid level measurements are taken at the beginning and end of the monitoring <br />periods (12 hours or 48 hours). <br />(For example: Level measured and recorded Friday night before locking <br />and again on Monday morning before opening.) <br />y,if liquid level varies more than 1% of the tank volume or 50 gallons, which <br />ever is less, between measurements, an unauthorized release shall be assumed <br />to have occurred and shall be reported to the local agency within 24 hours, <br />as per Article 5 Sect. 2652 of the Regulations, and further evaluations shall <br />be performed to verify or disprove the variations. <br />