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UST Program - Leak Prevention

UST Program – Leak Prevention

Public Record Summary Information on Underground Storage Tanks

Total Number of UST Facilities and Systems

Total Number of UST Facilities
13,843
Total Number of UST Systems
38,236

Summary Information for Onsite Inspections

Number of UST Facilities Inspected 13,841
Inspection Period Dates
7/1/2015
to
6/30/2016
Percent Compliance
62%
(Combined Measures)

Compliance Measurement and Reported UST Universe

Tank, facility, and onsite inspection information is based on a universe of 13,882 permitted UST facilities with 36,580 petroleum tanks and 1,637 hazardous material tanks. Onsite inspection measures compliance is based on regulations under Subtitle I in 40 CFR 280.12 except for tanks identified in 40 CFR 280.10(b) and 280.10(c). USTs included in this public record are those as defined in Title 23, California Code of Regulations, Division 3, Chapter 16. Onsite inspections measure compliance with Federal SOC requirements as identified by a California version of SOC criteria identified in LG-164-2

Summary Information for Releases

Number of Confirmed UST Releases1
80
Release Reporting Dates
10/1/2016
to
9/30/2017

Summary Information for Release Sources and Causes

Source
Cause
Spill
Overfill
Phys/Mec Damage4
Corrosion
Install Problem
Leak Detect Failure
Other5
Unknown/No Cause Reported
 
#
%
#
%
#
%
#
%
#
%
#
%
#
%
#
%
#
%
Tank
30 38 0 0 0 0 0 0 9 30 0 0 0 0 0 0 21 70
Piping
4 5 0 0 0 0 1 25 0 0 0 0 0 0 0 0 3 75
Dispenser
1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 100
STP Area2
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Delivery Prob
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Other3
45 56 0 0 0 0 0 0 1 2 0 0 0 0 1 2 43 96
TOTAL
80 100 0 0 0 0 1 25 10 32 0 0 0 0 1 2 68 85
  (# = Number, % = Percent of total number)
1. A total of 80 confirmed releases occurred between 10/1/2016 and 9/30/2017. 35 of the confirmed releases contained known source data collected in GeoTracker. The State Water Resources Control Board had 3,894 Active Cases as of September 30, 2017. 2,743 (70 percent of active cases) were managed by the nine Regional Water Quality Control Boards as the lead agency and 1,149 (30 percent) by local agencies.
2. STP = Submersible Turbine Pump
3. Other sources includes fill riser, vent/vapor piping, and spill bucket identified in GeoTracker.
4. Physical/Mechanical damage cause includes Mechanical Equipment Failure and Structural Failure.
5. Other cause includes loose component identified in GeoTracker.

 

Instructions for Site Specific UST and Release Information

Please visit the Cal/EPA Unified Program Website for links to CUPA/PA Websites. Some CUPA/PA(s) have UST facility information available online. For others you will have to make public records requests for the listing of UST facility information within that county/city. Please contact that agency from the agency information listed in the Cal/EPA Website link above.

  • Please visit the SWRCB GeoTracker Website and use search tools to find release information by facility.
  • To obtain paper copies of this page please contact Steven Mullery at (916) 341-5508.