Governor's Office Emergency Services
Hazardous Materials Spill Report

    DATE: 09/11/2024
    TIME: 1406
    RECEIVED BY:
    CONTROL#:
    Cal OES - 24-5139
    NRC -
1.a. PERSON NOTIFYING Cal OES:
1. NAME:2. AGENCY:3. PHONE#:4. Ext:5. PAG/CELL:
Metropolitan Water District of Southern California
1.b. PERSON REPORTING SPILL (If different from above):
1. NAME:2. AGENCY:3. PHONE#:4. Ext:5. PAG/CELL:
2. SUBSTANCE TYPE:
2. a. SUBSTANCE:b.QTY:>=<Amount Measurec. TYPE:d. OTHER:e. PIPELINEf. VESSEL
>= 300 Tons
1. Ozone=Unknown UnknownVAPORNoNo
2. = NoNo
3. = NoNo
g. DESCRIPTION: Per the reporting party: Automatic alarms located in a contractor building (facility where ozone is created) were set off upon detection of elevated levels of ozone, approximately 3.3ppm-4.0ppm. This caused a system shut down and for the backup systems to engage. The suspected cause of the ozone release is the threading of the drop leg ball valve on both the north and south main ozone header's. Maintenance is currently underway to fix the mechanism.
h. STOPPAGE/CONTAINMENT:i. WATER INVOLVED: j. WATERWAY:k. DRINKING WATER IMPACTED
StoppedNoNoNo
l. MARITIME VESSEL
No		m. KNOWN IMPACT
None
3. a. INCIDENT LOCATION: Lake Skinner Facility, 33740 Borel Rd
b. CITY:c. COUNTY: d. ZIP:
Winchester
Riverside County92596SOUTH COAST AQMD
4. INCIDENT DESCRIPTION:
a. DATE:b. TIME (Military):c. SITE:d. REPORTED CAUSE
09/11/20240927 Treatment/Sewage Facility Mechanical
e. INJURIESf. FATALITY g. EVACUATIONh. CLEANUP BY:
NoNoNoUnrecoverable
6. NOTIFICATION INFORMATION:
a. ON SCENE:b. OTHER ON SCENE: c. OTHER NOTIFIED:
d. ADMIN. AGENCY: Riverside County Environmental Healthe. SEC. AGENCY:
f. ADDITIONAL COUNTY: g. ADMIN. AGENCY:
h. NOTIFICATION LIST:
Cal GEM:
RWQCB Unit:

8
Cal OES Region:
AA/CUPA, DTSC, RWQCB, US EPA, USFWS, AIR RESOURCES BD, Co/Hlth, Co/E-Hlth
Photo Attachment:
11. Cal OES Reg.
********* Control No: 24-5139 *********

Created by: Warning Center on: 09/11/2024 02:06:35 PM Last Modified by: Warning Center on: 09/11/2024 02:18:47 PM