Governor's Office Emergency Services
Hazardous Materials Spill Report

    DATE: 12/01/2023
    TIME: 1237
    RECEIVED BY:
    CONTROL#:
    Cal OES - 23-7400
    NRC -
1.a. PERSON NOTIFYING Cal OES:
1. NAME:2. AGENCY:3. PHONE#:4. Ext:5. PAG/CELL:
County of San Luis Obispo Public Works
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. Treated Sewage=2,000 Gal(s)SEWAGENoNo
2. = NoNo
3. = NoNo
g. DESCRIPTION: Per the reporting party: An overflow occurred due to an effluent pump bypass that caused treated sewage to enter into a clear well. The clear well overflowed and released into a storm drain which leads to a reservoir. The treated sewage was rerouted and was released onto gravel and sand before it made it to the resevoir. The treated sewage is unrecoverable due to being absorbed by the gravel and sand. This release was in the city of Oak Shores which is located in San Luis Obispo, bordering Monterey county. Repairs are currently being conducted.
h. STOPPAGE/CONTAINMENT:i. WATER INVOLVED: j. WATERWAY:k. DRINKING WATER IMPACTED
StoppedYesStorm DrainNo
l. MARITIME VESSEL
m. KNOWN IMPACT
None
3. a. INCIDENT LOCATION: 2335 Ridgerider Rd
Storm Drain Coordinates: Lat: 35.752626 / Long: -120.984525
b. CITY:c. COUNTY: d. ZIP:
Unincorporated county area San Luis Obispo
San Luis Obispo CountySAN LUIS OBISPO COUNTY APCD
4. INCIDENT DESCRIPTION:
a. DATE:b. TIME (Military):c. SITE:d. REPORTED CAUSE
11/30/20230130 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:
San Luis Obispo County Env. Health,
d. ADMIN. AGENCY: San Luis Obispo County Public Healthe. SEC. AGENCY:
f. ADDITIONAL COUNTY: Monterey County g. ADMIN. AGENCY: Monterey County Health Department
h. NOTIFICATION LIST:
Cal GEM:
RWQCB Unit:

3
Cal OES Region:
AA/CUPA, DTSC, RWQCB, US EPA, USFWS, LANDS, PARKS & REC, Co/WP, Co/Hlth, Co/E-Hlth
Photo Attachment:
11. Cal OES Reg.
********* Control No: 23-7400 *********

Created by: Warning Center on: 12/01/2023 12:37:43 PM Last Modified by: Warning Center on: 12/01/2023 01:02:08 PM