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OM1 Thames Water Stockton Emergency Response Incident Report TYPE OF INCIDENT: PRODUCT: QUANTITY: EMERGENCY LEVEL: ❑ Sewage Release Sulfuric Acid ❑Level I(Low Level) X HazMat Release ❑ ❑Approx. 100-200gals_ ❑ Level II(Moderate Level) ❑Other ❑Level III(Major Evacuations) LOCATION OF RELEASE:3307 Hwy 4&John Turk Rd.Chemical RESPONSIBLE PARTY:OMI/names Water Building Sulfuric Acid Bulk Storage Tank ADDRESS:2516 Navy Drive,Stockton Ca.95206 PHONE: CALL RECEIVED FROM:Russell Grant,Shift Supervisor DATE:July 28,2006 TIME:0045 hrs AGENCIES/TIME NOTIFIED: Name/Time ❑CO.OES Left Message /0220 hrs_ L]RWQCB / ❑CO.HEALTH Operator Exchange /0217 hrs_ ❑ SWRCB / ❑CO.SHERIFF Operator /0222 hrs_ ❑CHP / ❑ CO AG DEPT. / ❑ DEPT.F&G Carol /0322 hrs_ ❑ SFD Shiela /0201 ❑ STATE WARNING CTR(OES) / ❑ SPD Kevin HazMat.Team / ❑CITY AM / National Response Center,Joan 0334 hrs ❑CALTRANS / DEPARTMENT PERSONNELITIME NOTIFIED(Note time in 24-hour clock): ADMINISTRATION: ❑DIRECTOR ❑DEPT DIRECTOR CSO/WTE 0005 hrs ❑ SAFETY OFFICER 0533 hrs_ ❑ASST.DIR ❑ SR SUPERVISOR CSO/WTE ❑REG COMPL OFF ❑ DEP DIR W/W ❑DEP DIR S/W CSO/WTE: ❑ SUPERVISOR CSO SUPERVISOR WTE OPERATIONS: ❑ CHIEF PLT OPERATOR 0100 hrs ❑MAIN PLT SUPER ❑ TERT PLT SUPER ❑ TERTIARY PLANT ❑MAIN PLANT MAINTENANCE: ❑ SUPERVISOR 0010 hrs ❑ SR MAINTENANCE 001 Ohrs ENVIRONMENTAL CONTRO: ❑ SUPERVISOR ❑ OFFICER(S) LABORATORY: ❑ SUPERVISOR ❑ LABORATORY STAFF DESCRIBE INCIDENT: Sulfuric Acid leak(gpprox 100-200 gals)from the daytank at the Tertiary Facilityby the chemical building.At approximately midnight on 7/28/06 a leak was detected on the north/west side wall on the daytank on the discharge line near the flange.The area was cordoned off,Fire dent responded with hazmat team during which time various agencies were notified as described in this report The Haz.Mat team were satisfied that the acid was being contained on site and the davtank drained by pumps into our plant.Operations increased the acid pumping rate to near 100%to draw the maximum rate of acid from the davtank.At approximately 1330 hrs PSC came in a stopped the leak,operationscontinued to pump the acid out of the daytank and lost prime on the pumps at 0730 Sunday July 30 2006 PSC will be out on Monday July 31,2006 to pump out the remainder of the acid and remediate the daytank, CONTAINMENT,CLEANUP MEASURES(circle those that apply): Containment Measures: Cleanup Measures: 1 = Contained @ gutter A = Absorption,sweep,pick up,deposit in sanitary m/h sanitize/wash down 2 = Contained @ catch basin H = Hydro-vactor removal,sanitize/wash down 3 = Contained @ manhole P = Pump from storm wet well to sanitary manhole 4 = Contained @ storm wet well C = Clean Up Company 5 = Not contained I = Informational packet mailed to responsible party Rev.08/03