Governor's Office Emergency Services
Hazardous Materials Spill Report

    DATE: 09/10/2024
    TIME: 1137
    RECEIVED BY:
    CONTROL#:
    Cal OES - 24-5104
    NRC -
1.a. PERSON NOTIFYING Cal OES:
1. NAME:2. AGENCY:3. PHONE#:4. Ext:5. PAG/CELL:
West County Waste Water District
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. Sewage=31,000 Gal(s)SEWAGENoNo
2. = NoNo
3. = NoNo
g. DESCRIPTION: Per the reporting party: The city of Richmond notified the West County Waste Water District that one of their manhole's were releasing sewage into Hilltop Lake. The release began approximately at 0600 hours and was stopped at the time of report. The sewage system experienced a blockage caused by roots, causing sewage to release. Most of the material is considered unrecoverable, however a small amount can be collected and returned to the system.
h. STOPPAGE/CONTAINMENT:i. WATER INVOLVED: j. WATERWAY:k. DRINKING WATER IMPACTED
Stopped, ContainedYesHilltop LakeNo
l. MARITIME VESSEL
No		m. KNOWN IMPACT
None
3. a. INCIDENT LOCATION: Hilltop Lake; Lat: 37°59.10 N/ Long: 122°19.36 W
b. CITY:c. COUNTY: d. ZIP:
Richmond
Contra Costa CountyBAY AREA AQMD
4. INCIDENT DESCRIPTION:
a. DATE:b. TIME (Military):c. SITE:d. REPORTED CAUSE
09/10/20240600 Waterways Blockage
e. INJURIESf. FATALITY g. EVACUATIONh. CLEANUP BY:
NoNoNoReporting Party, Unrecoverable
6. NOTIFICATION INFORMATION:
a. ON SCENE:b. OTHER ON SCENE: c. OTHER NOTIFIED:
d. ADMIN. AGENCY: Contra Costa County Health Services Departmente. SEC. AGENCY:
f. ADDITIONAL COUNTY: g. ADMIN. AGENCY:
h. NOTIFICATION LIST:
Cal GEM:
RWQCB Unit:

2
Cal OES Region:
AA/CUPA, DTSC, RWQCB, US EPA, USFWS, DWP-DO, LANDS, PARKS & REC, USCG, Co/WP, Co/Hlth, Co/E-Hlth
Photo Attachment:
11. Cal OES Reg.
********* Control No: 24-5104 *********

Created by: Warning Center on: 09/10/2024 11:37:37 AM Last Modified by: Warning Center on: 09/10/2024 11:52:45 AM