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AOARO OF TRUSTEES SAN JOAQUIN LOCAL HEALTH DISTRICT <br /> J—es Culbertson, Pros. SERVING <br /> Patrlcla E. Vsnnuccl, See"y. city of Lodi <br /> Anthonalta van Spronsen 1641 Ea3t Hazelton Avenue, P. O. Box 2409 San Jaaquln County <br /> Earl Pimantal Stockton, California 95201 Cityy G#Escalon <br /> of Manteca <br /> Fern 13upteo <br /> Daniel L. Floras 209/466-6781 City of Ripon <br /> John D. Mut, M.D. City of Stockton <br /> City of Tracy <br /> William J. Wa4• <br /> Jogl Khanna, M.D.. M.P.H.. District Health Officer San Joaquin County <br /> Mary Anna Love San Joaquin County <br /> Facility Namea <br /> Address LAr_ v� <br /> Date of Inspection t � - NZ Inspector ry� r � <br /> MONITORING ALTERNATIVE #8: Tank Gauging <br /> qualifying status: Governmental agency <br /> Small business <br /> tten 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 /> GTank gauging performed as follows: <br /> _Zank 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 /> � rank 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 /> Liquid 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 /> 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 />