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SWRCB,January 2002 RECEIVED <br /> 4. TANK ANNULAR TESTING APR I <br /> Test Method Developed By: X Tank Manufacturer ❑Industry Standard ❑Professional Engineer <br /> ❑Other(Spec) <br /> Test Method Used: ❑Pressure X Vacuum ❑Hydrostatic HEALTH DEPARTMEff <br /> Fj Other(Spec) <br /> oTestquipment Used: Gast Vacuum Pump/Vacuum Gauges in Hg. Equipment Resolution:- %"x-30"Hg. <br /> Tank#2 Tank#3 Tank# <br /> k Exempt From Testing?' No No No <br /> Tank Capacity: 12K 12K 10K <br /> Tank Material: Coated DW Steel Coated DW Steel Coated DW Steel <br /> Tank Manufacturer: Modern Welding Modern Welding Modern Welding <br /> Product Stored: Regular 87 Regular 87 Super 91 <br /> Wait time between applying 30 Minutes 30 Minutes 30 Minutes <br /> vacuum and starting test: <br /> Test Start Time: 10:40 11:05 11:20 <br /> Initial Reading(Rj): -5 Hg. -5 Hg. -5 Hg. <br /> Test End Time: 11:40 12:05 12:20 <br /> Final Reading(RF): -5 Hg. -5 Hg. -5 Hg. <br /> Test Duration: 1 Hour I Hour 1 Hour <br /> Change in Reading(RF-R,): 0 Hg. 0 Hg. 0 Hg. <br /> Pass/Fail Threshold or Criteria: No Loss in Hg. No Loss in Hg. No Loss in Hg. <br /> Test Result: Pass Pass Pass <br /> Was sensor removed for testing? Yes Yes Yes <br /> Was sensor properly replaced and Yes Yes Yes <br /> verified functional after testing? <br /> Comments—(include information on repairs made prior to testing, and recommended follow-up for failed tests) <br /> Small amount of liquid in bottom of annular space of Tank#2 prior to Testing. Not enough to measure. <br /> I used a cotton rag attached to a tape measure to wipe dry bottom of annular space prior to Testing. <br /> No further signs of liquid in annular space of Tank at conclusion of Testing. <br /> I called Tank Manufacture Modern Welding to verify maximum Vacuum for Testing. <br /> Tank Manufacture recommends 3"Hg. toy"Hg. of Vacuum for this model Tank. S"Hg.Maximum. <br /> I informed UST Site operator,Lawrence Wight,of all conditions and comments listed above. <br /> ' Secondary containment systems where the continuous monitoring automatically monitors both the primary and secondary <br /> containment,such as systems that are hydrostatically monitored or under constant vacuum,are exempt from periodic containment <br /> testing. {California Code of Regulations,Title 23,Section 2637(a)(6)) <br />