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MONTHLY STATISTICAL I&VENTORYR RI CONCILAT ON (SIR) REPORT ee:. Enviroquest Southwest phone (602) 837-8738 0, SIRAS — version 2.8.3 Date of SIR report 2/15/96 E 1 / 9 6 What is the required number of usable irlventOry days per to lk? 30 Unocal No. 4409 1502 N. EI Dorado Stockton, CA 95204 NOTE: N/A indicates No Analysis Performed Negative Calculated Leak Rates indicate a Gain 1. The tank owner is required to have an SIR report for each month [Section 2643 (b)(3) CCR -J. 2. Monthly reports must be submitted to the local agency upon request [Section 2712 (b) CCR]. 3. The tank owner is required to have the report by the 20th day of the following month [Section 2646.1 (c) CCR]. 4. If for any reason, the test is neither 'pass' nor 'fail', the 'inconclusive column must be marked. 5. The local agency must be notified of a tank that does not pass the SIR test within 24 hours of receipt of the report and the SIR report must be submitted to the local agency within 10 days of the date of the report [Section 2646.1 (d) CCR[. 6. Quantitative and Qualitative Methods: a. A leak threshold, minimum detectable leak rate, and calculated leak rate must be provided for each tank. If not, then the tank failed the SIR lest. b. It the calculated leak rate for a tank is greater than or equal to the leak threshold, the tank failed the SIR test. C. If the minimum detectable leak rate for a tank is greater than the certified performance standard (i.e., 0.1 or 0.2 gph) and the calculated leak rate is less than the leak threshold, the test is inconclusive for that month. d. Two consecutive failures and/or inconclusives require a tank and/or piping integrity test within 15 days from the date of the second report [Section 2646.1 (h) CCR]. 7. Optional. j r s is r`ft<eg rZv )17'777777, . . u.m means une aa, uiv on a. Cnapter 16 of the California CO a of Regulations SW RCB — SIR/MON — 01 (1254)