Underground Storage Tank Systems -- Installation Requirements
- Installation plans that include a site drawing, materials to be used, and other relevant installation information, must be submitted for Health Department approval, prior to beginning construction or upgrading UST system (submit plans through applicable building department).
- USTs (including piping) must conform to construction standards found in Title 40 of the Code of Federal Regulations Part 280 (40 CFR 280). These include corrosion protection, overfill prevention, spill protection, and leak detection.
- Recommended practices found in PEI/RPI 100-2000, API 1615, NFPA 30, 31 are the minimum standards to be used for UST installations. Manufacturer`s recommended installation practices may be followed.
- Spill containment sumps must be installed beneath the dispensers. Connection of sumps to piping must be leak free.
- USTs installation must be overseen by a Nevada certified UST handler.
- Installation Permits must be obtained from the applicable fire prevention agency.
II. Additional Considerations
- Secondary vapor recovery piping must be installed, if applicable, prior to approving the USTs for operation (contact Air Quality Management Division at (775) 784-7200).
- Fill drop tubes must be installed in applicable USTs (contact Air Quality Management Division); fill tubes must extend to within 6" of the tank bottom.
- Water supply lines located within 20` of USTs, including USTs piping, must not be made of plastics. Use copper or galvanized.
Prior to tanks being installed, a Washoe County District Health Department (WCDHD) representative must be called at least 24 hours in advance to perform the following inspections:
- USTs have corrosion protection compatible with oxyfuel blends. Tank Type: _____________________
- USTs tested prior to installation: Holiday, soap, pressure, vacuum, etc.
- USTs excavation correctly sized, lined if applicable. Backfill material correct size and grade. Tanks installed at correct depths, adequate separation between tanks, tanks correctly bedded.
- Incoming main water line material copper or steel, or located at least 20` from USTs.
- Piping excavation correctly sized, backfill material correct size and grade. Piping correctly bedded, separation between pipes adequate. Product piping pressure tested at 50 psig or 1.5 times normal operation pressure, for 30 minutes. Joints soap tested. Pipe solvents, glues, dopes, compatible with oxyfuel blends. Piping grade from terminus to tank 1/8" per foot, minimum. Suction piping check (foot) valve located at the dispenser.
- Secondary containment, vent, and secondary vapor recovery piping correctly bedded, separation between pipes adequate. Pressure test at 5 psig for 15 minutes. Joints soap tested, piping grade from terminus to tank 1/8" per foot, minimum, and secondary vapor recovery piping free of sags.
- Metallic pipe (including flex) that may be in contact with backfill or native soil correctly protected from corrosion
- Manhole risers correctly attached to tank. Piping correctly attached to risers (leak free).
- Overfill protection installed and set to 95% of tank capacity, maximum.
- Spill containment installed for fill ports or other ports as may be required.
- Drop tube installed. Bottom of tube to within 6" of tank bottom.
- Caps and gaskets for fill tubes, vapor recovery ports, etc. in adequate condition.
- Containment sump beneath dispensers installed. Piping correctly connected to sumps (leak free).
- Leak detection sensors tested, inventory system tested, leak detection alarms tested and operator trained.
- Notification forms completed and submitted. Installer certification form completed and submitted.
Fire Prevention Bureau Permit Information (Washoe County only):
- Reno (South of Truckee River)
775-689-2954 (Inspection by Reno FD and WCDHD)
- Reno (North of Truckee River)
775-334-2523 (Inspection by Reno FD and WCDHD)
- Truckee Meadows
775-325-8074 (Inspection by Reno FD and WCDHD)
- North Lake Tahoe
775-831-0364 (Inspection by NLTFD and WCDHD)
775-353-2266 (Inspection of Regulated USTs by WCDHD )
- Nevada Division of Forestry (Inspection of Regulated USTs by WCDHD)