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Facility At-A-Glance Report
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[GLOSSARY]
Place ID 727334
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General Information
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| Region |
Place ID |
Place Name |
Place Type |
Place Address |
Place County |
| 2 |
727334 |
SLAC National Accelerator Laboratory CS |
Collection_System |
2575 Sand Hill 08A Menlo Park, CA, 94025 |
San Mateo |
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Related Parties
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Total Related Parties: 16
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Regulatory Measures
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Total Reg Measures: 1
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Violations
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| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1134077 |
05/13/2024 |
SSOS |
Type: Category 1 Spill; Flow Exceeded Capacity (Separate Collection System Only), Root Intrusion caused 115 gallons of sewage to spill from Lateral Clean Out (Private), Manhole at West Campus Trunk Line to Drainage Conveyance System that discharges to surface water, Paved Surface, Unpaved Surface |
Adjusted Schedule/Method of Preventive Maintenance, Inspected Sewer Using CCTV to Determine Cause, Plan Rehabilitation or Replacement of Sewer. Contractors jetted downstream of manhole 70 to ensure there were no additional blockages on 5/14/24.
CCTV is being scheduled for several segments to confirm no additional obstructions in the line.
SLAC is revising the sanitary sewer preventative maintenance scope and schedule to prevent recurrence.
SLAC is preparing to replace or repair the 4” diameter lateral from B003 cleanout to manhole 77. |
Violation |
A |
SSO |
| 1134075 |
02/04/2024 |
SSOS |
Type: Category 1 Spill; Natural Disaster (specify below), Pump Station Failure - Power caused 50 gallons of sewage to spill from Inside Building or Structure, Pump Station at Building 120 Lift Station to Drainage Conveyance System that discharges to surface water, Street/Curb and Gutter (2 3) |
Other (specify below). See 10a for description of corrective actions. See 10c for timeline of corrective actions. |
Violation |
A |
SSO |
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Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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Total Violations: 2
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Priority Violations: 0
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*Click the "(+/-) Violation Description" link to expand and contract the violation description.
*As of 5/20/2010, the Water Board's Enforcement Policy requires that all violations be classified as 1, 2 or 3, with class 1 being the highest. Prior to this, violations were simply classified as Yes or No. If a 123 classification has been assigned to a violation that occurred before this date, that classification data will be displayed instead of the Yes/No data.
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| Violation Types |
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SSOS = Sanitary Sewer Overflow/Spill/
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Enforcement Actions
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Total Enf Actions: 1
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Inspections
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| Total Inspections: 0 |
Last Inspection: None |
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The current report was generated with data as of: 07/03/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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