50-State Transformer Oil & Dielectric Laws
State-by-state Public Utility Commission (PUC) transformer maintenance rules, IEEE C57.106 in-service dielectric breakdown testing, EPA TSCA 40 CFR Part 761 PCB handling limits, and EPA SPCC 40 CFR 112 secondary containment mandates.
| State | Governing Public Utility Commission & Environmental Agency | IEEE C57.106 Annual In-Service Testing Mandate | EPA TSCA PCB Disposal & Cross-Contamination Standard | SPCC Substation Transformer Secondary Containment Rules |
|---|---|---|---|---|
| Alabama | Alabama PSC / ADEM Land Division | Annual DGA & Dielectric Breakdown Test | < 50 ppm PCB standard (< 2 ppm Non-PCB) | 110% transformer tank SPCC basin |
| Alaska | RCA / Alaska DEC Spill Prevention | IEEE C57.106 cold climate testing | EPA TSCA Region 10 compliance | Impervious liner containment standard |
| Arizona | Arizona Corporation Commission / ADEQ Waste | Mandatory Substation Fluid Maintenance | Strict PCB manifest tracking | Secondary containment berm mandate |
| Arkansas | Arkansas PSC / ADEQ Water & Waste | Biennial DGA & moisture screening | TSCA Part 761 recycling rules | SPCC oil spill prevention plans |
| California | CPUC / DTSC Hazardous Waste Management | Strict Annual DGA & Furan Cellulose Testing | Strict Non-PCB Mandate (< 2 ppm Cal/EPA) | Mandatory concrete vault oil-stop valves |
| Colorado | Colorado PUC / CDPHE Hazardous Materials | IEEE C57.106 annual utility audit | TSCA PCB remediation waste rules | Substation oil containment berms |
| Connecticut | CT PURA / CT DEEP Waste Section | Annual ASTM D1816 breakdown testing | Strict CT PCB hazardous waste rule | Impervious secondary containment |
| Delaware | Delaware PSC / DNREC Waste & Hazardous | IEEE C57.106 acceptance standards | TSCA commercial storage rules | DNREC SPCC containment mandate |
| Florida | Florida PSC / Florida DEP Waste Management | Annual Substation Fluid Certification | FAC 62-730 PCB management | 110% volume moat with oil water separator |
| Georgia | Georgia PSC / Georgia EPD Land Protection | IEEE C57.106 annual testing | EPA Region 4 TSCA standards | SPCC compliant aggregate filled pit |
| Hawaii | Hawaii PUC / Hawaii DOH Solid & Haz Waste | Annual DGA & Karl Fischer moisture | Island PCB export TSCA manifests | Concrete containment barrier mandate |
| Idaho | Idaho PUC / Idaho DEQ Waste Management | IEEE C57.106 maintenance standards | TSCA Part 761 disposal standards | Substation retention pond standards |
| Illinois | Illinois Commerce Commission / Illinois EPA | Mandatory DGA & Dielectric Breakdown | Strict 35 IAC PCB handling rules | SPCC oil containment vault standard |
| Indiana | IURC / IDEM Office of Land Quality | IEEE C57.106 annual screening | TSCA non-PCB certification rules | IDEM secondary containment rules |
| Iowa | Iowa Utilities Board / Iowa DNR | Annual utility substation testing | EPA Region 7 TSCA compliance | DNR SPCC secondary basin mandate |
| Kansas | Kansas Corporation Commission / KDHE Waste | IEEE C57.106 fluid acceptance | TSCA compliant waste manifests | Substation oil barrier containment |
| Kentucky | Kentucky PSC / Kentucky EEC Division of Waste | Annual DGA & moisture verification | 401 KAR PCB waste standards | SPCC transformer catch basin |
| Louisiana | Louisiana PSC / LDEQ Office of Env Services | IEEE C57.106 hurricane readiness test | LDEQ PCB management standards | SPCC clay/concrete dike containment |
| Maine | Maine PUC / Maine DEP Remediation & Waste | Annual ASTM D1816 breakdown audit | Strict Maine DEP PCB waste rules | Impermeable liner secondary basins |
| Maryland | Maryland PSC / MDE Land & Materials | COMAR annual substation testing | COMAR 26.13 PCB disposal standards | SPCC substation oil capture sumps |
| Massachusetts | Mass DPU / MassDEP Hazardous Waste | Strict Annual DGA & Dielectric Testing | 310 CMR Strict PCB Tracking | MassDEP engineered secondary containment |
| Michigan | Michigan PSC / EGLE Materials Management | Part 111 / IEEE C57.106 standards | Strict Great Lakes TSCA PCB rules | SPCC concrete moat & oil stop valve |
| Minnesota | Minnesota PUC / MPCA Remediation Division | Annual DGA & moisture monitoring | MPCA PCB management rules | MPCA secondary containment mandate |
| Mississippi | Mississippi PSC / MDEQ Waste Division | IEEE C57.106 utility guidelines | TSCA compliant fluid recycling | SPCC earthen / gravel containment |
| Missouri | Missouri PSC / Missouri DNR Waste Management | Annual substation fluid testing | 10 CSR 25 PCB waste rules | DNR transformer oil basin standard |
| Montana | Montana PSC / Montana DEQ Waste & Underground | IEEE C57.106 maintenance criteria | TSCA Region 8 compliance | DEQ oil spill prevention basins |
| Nebraska | Nebraska Power Review Board / NDEE Waste | Annual public power testing audit | NDEE Title 128 PCB standards | NDEE SPCC containment berms |
| Nevada | PUCN / NDEP Bureau of Waste Management | IEEE C57.106 desert climate testing | NAC 444 PCB management | NDEP containment basin standards |
| New Hampshire | NH PUC / NHDES Waste Management | Annual ASTM D1816 breakdown test | Env-Hw 500 strict PCB rules | NHDES impervious containment |
| New Jersey | NJ BPU / NJDEP Site Remediation & Waste | Mandatory Annual Substation DGA Audit | N.J.A.C. 7:26 Strict PCB Rules | NJDEP concrete containment vault mandate |
| New Mexico | NMPRC / NMED Hazardous Waste Bureau | IEEE C57.106 annual verification | 20.4.1 NMAC PCB standards | NMED transformer containment berms |
| New York | NYS PSC / NYS DEC Division of Materials (Part 371) | Strict Annual DGA & Furan Testing (6 NYCRR) | Strict NYS PCB Hazardous Waste Rule (< 2 ppm) | NYSDEC 110% secondary containment vault |
| North Carolina | NC Utilities Commission / NC DEQ Waste | Annual IEEE C57.106 testing audit | 15A NCAC 13A PCB rules | NC DEQ SPCC containment basins |
| North Dakota | ND PSC / ND DEQ Waste Management | IEEE C57.106 winter testing criteria | TSCA compliant waste manifests | ND DEQ gravel-filled pit standards |
| Ohio | PUCO / Ohio EPA Division of Materials & Waste | Annual DGA & Dielectric Breakdown Test | OAC 3745-51 PCB disposal rules | Ohio EPA secondary containment berms |
| Oklahoma | OCC Public Utility Division / ODEQ Land | IEEE C57.106 annual maintenance | OAC 252:205 PCB standards | ODEQ transformer oil catch basins |
| Oregon | OPUC / Oregon DEQ Land Quality | OAR 860 annual substation testing | OAR 340-102 strict PCB tracking | DEQ secondary containment liners |
| Pennsylvania | PA PUC / PA DEP Bureau of Waste Management | Mandatory Annual DGA & Moisture Audit | 25 Pa. Code 261a PCB standards | PA DEP impervious containment basin |
| Rhode Island | RI PUC / RIDEM Office of Waste Management | Annual IEEE C57.106 fluid screening | 250-RICR-140 strict PCB rules | RIDEM secondary containment vault |
| South Carolina | SC PSC / SC DHEC Bureau of Land & Waste | Annual substation oil testing | R.61-79 PCB waste standards | DHEC SPCC retention basins |
| South Dakota | SD PUC / SD DANR Waste Management | IEEE C57.106 maintenance standards | TSCA compliant waste handling | DANR oil containment pit rules |
| Tennessee | TPUC / TDEC Division of Solid Waste | Annual DGA & moisture testing | Rule 0400-12-01 PCB rules | TDEC secondary containment berms |
| Texas | PUCT / TCEQ Industrial & Hazardous Waste (30 TAC) | Mandatory IEEE C57.106 ERCOT Substation Audit | 30 TAC § 335 Strict PCB Manifest Standard | TCEQ 110% secondary containment basin |
| Utah | Utah PSC / Utah DEQ Division of Waste | IEEE C57.106 annual testing | UAC R315 PCB management | DEQ secondary containment sumps |
| Vermont | VT PUC / VT DEC Waste Management | Annual ASTM D1816 breakdown test | Strict VT PCB hazardous rules | DEC impermeable containment basins |
| Virginia | Virginia SCC / VDEQ Land Division | Annual substation dielectric audit | 9 VAC 20-60 PCB standards | VDEQ SPCC transformer moats |
| Washington | UTC / Washington Ecology Hazardous Waste | WAC 480 annual substation fluid test | Strict Dangerous Waste PCB Rule (< 2 ppm) | Ecology double-walled secondary basins |
| West Virginia | WV PSC / WV DEP Division of Land | IEEE C57.106 maintenance audit | 33 CSR 20 PCB waste standards | WV DEP containment sump standards |
| Wisconsin | PSCW / Wisconsin DNR Waste Management | Annual DGA & moisture verification | NR 661 PCB compliance | DNR transformer retention berms |
| Wyoming | Wyoming PSC / WDEQ Solid & Hazardous | IEEE C57.106 testing criteria | TSCA compliant fluid recycling | WDEQ secondary containment standards |