Governor's Office Emergency Services
Hazardous Materials Spill Report

DATE: 10/03/2022
TIME: 1442
RECEIVED BY: CONTROL#:
Cal OES - 22-5824
NRC -
1.a. PERSON NOTIFYING Cal OES:
1. NAME:2. AGENCY:3. PHONE#:4. Ext:5. PAG/CELL:
Private Citizen
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. Raw Sewage>1000 Gal(s)SEWAGENoNo
2. = NoNo
3. = NoNo
g. DESCRIPTION: Reporting Party states a sewer pipe was broken in the vicinity of Shell Ridge (Part of Mount Diablo). Sewage from the broken pipe is running down a creek bed. The Sanitary District for Contra Costa did respond to the spill, and dammed the creek and flushed it. After they left, the creek is still showing a milky white substance. The creek is predominately always clear.
h. STOPPAGE/CONTAINMENT:i. WATER INVOLVED: j. WATERWAY:k. DRINKING WATER IMPACTED
Unknown if stopped, Unknown if containedYesCreek bed - Name Unknown (Tributary of Indian Creek)No
l. MARITIME VESSEL
No
m. KNOWN IMPACT
Unknown
3. a. INCIDENT LOCATION: Between 3131 Walnut Blvd and 3161 Walnut Blvd
b. CITY:c. COUNTY: d. ZIP:
Walnut Creek
Contra Costa County94596BAY AREA AQMD
4. INCIDENT DESCRIPTION:
a. DATE:b. TIME (Military):c. SITE:d. REPORTED CAUSE
09/29/20221200 Waterways Broken Pipe
e. INJURIESf. FATALITY g. EVACUATIONh. CLEANUP BY:
NoNoNoCo. HazMat
6. NOTIFICATION INFORMATION:
a. ON SCENE:b. OTHER ON SCENE: c. OTHER NOTIFIED:
Sheriff Ofc., OtherSanitary District for Contra Costa
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, DFW-OSPR, CDPH-D.O., LANDS, PARKS & REC, Co/WP, Co/Hlth, Co/E-Hlth
Photo Attachment:
11. Cal OES Reg.
********* Control No: 22-5824 *********

Created by: Warning Center on: 10/03/2022 02:42:40 PM Last Modified by: Warning Center on: 10/03/2022 03:01:44 PM