218 banked CO certificates of record, recorded prices, and a direct line to the holders.
Home / District guides / South Coast AQMD / CO
Every registry entry in South Coast AQMD that includes CO, from ERC & STERC Active List, July 2026. These are banked credits — the register shows what exists, not what the holder has agreed to sell. Open the interactive registry to send an inquiry on any of them.
| Holder of record | Certificate(s) | Source / pollutants banked |
|---|---|---|
| Oxy USA Inc | 5 certificates (AQ011875 … AQ012823) | Facility: Huntington Beach · PM10 14 · CO 565 (lb/day) |
| Tesoro Refining & Marketing Co, LLC | 24 certificates (AQ012942 … AQ015954) | Facility: Carson, Wilmington · NOx 12 · ROG 158 · PM10 149 · SOx 1 · CO 90 (lb/day) |
| Ultramar Inc | 17 certificates (AQ001325 … AQ014535) | Facility: Carson, El Segundo, Long Beach, Wilmington · ROG 135 · PM10 40 · CO 216 (lb/day) |
| LA City, DWP Harbor Generating Station | 6 certificates (AQ003469 … AQ005033) | Facility: Wilmington · ROG 206 · CO 98 (lb/day) |
| UCLA | 5 certificates (AQ001439 … AQ001443) | Facility: Los Angeles · NOx 75 · ROG 3 · PM10 20 · SOx 106 · CO 40 (lb/day) |
| LA City, DWP | AQ004085, AQ005036, AQ015581 | Facility: Los Angeles · NOx 125 · PM10 15 · CO 70 (lb/day) |
| Orange County Sanitation District | 11 certificates (AQ006045 … AQ016009) | Facility: Huntington Beach, Seal Beach · NOx 18 · ROG 81 · SOx 9 · CO 100 (lb/day) |
| Sempra Energy (The Gas Co) | AQ005017 | Facility: Monterey Park · CO 202 (lb/day) |
| US Govt, Air Force Dept, March AFB | 5 certificates (AQ000686 … AQ002563) | Facility: Long Beach, Los Angeles, South Gate · NOx 40 · ROG 10 · SOx 20 · CO 115 (lb/day) |
| So Cal Edison Co | 17 certificates (AQ001193 … AQ015939) | Facility: Avalon · ROG 21 · PM10 3 · CO 136 (lb/day) |
| Chevron Products Co. | 13 certificates (AQ003171 … AQ015945) | Facility: El Segundo, Huntington Beach · NOx 5 · ROG 34 · PM10 19 · SOx 55 · CO 47 (lb/day) |
| Southern California Edison Co | 23 certificates (AQ001192 … AQ001309) | Facility: Anza, Baldwin Park, Corona, El Monte, Grand Terrace, Lakeview, Nuevo, Rialto, Riverside, Romoland, San Jacinto, Upland · NOx 4 · SOx 27 · CO 117 (lb/day) |
| Long Beach Generation LLC | 8 certificates (AQ006216 … AQ006579) | Facility: Long Beach · ROG 1 · CO 146 (lb/day) |
| Phillips 66 Company/Los Angeles Refinery | AQ013898, AQ013899, AQ014000 | Facility: Carson · ROG 32 · PM10 19 · CO 81 (lb/day) |
| Air Products Manufacturing, LLC | 6 certificates (AQ015948 … AQ015953) | Facility: Paramount · ROG 28 · PM10 4 · SOx 4 · CO 82 (lb/day) |
| LA City, DWP Haynes Generating Station | 6 certificates (AQ003637 … AQ011142) | Facility: Long Beach · ROG 15 · PM10 31 · SOx 5 · CO 34 (lb/day) |
| Chevron Chem Co, Petrochem Div (eis Use) | AQ003145 | Facility: Los Angeles · CO 75 (lb/day) |
| California Steel Industries Inc | 7 certificates (AQ002419 … AQ015537) | Facility: Fontana · NOx 29 · ROG 14 · PM10 8 · CO 4 (lb/day) |
| Commercial Enameling Co | AQ006617 | Facility: Huntington Park · CO 27 (lb/day) |
| Clougherty Packing LLC/Hormel Foods Corp | 5 certificates (AQ000338 … AQ013984) | Facility: Vernon · ROG 5 · PM10 8 · CO 5 (lb/day) |
| Crown Coach Inc | AQ000855 | Facility: Chino · CO 17 (lb/day) |
| Shultz Steel Co | AQ002458, AQ002837, AQ006925 | Facility: South Gate · ROG 4 · PM10 1 · CO 10 (lb/day) |
| Paramount Petr Corp (eis Use) | 4 certificates (AQ005556 … AQ012956) | Facility: Paramount · CO 12 (lb/day) |
| Frito-Lay North America, Inc. | AQ001317, AQ003184 | Facility: Rancho Cucamonga · CO 11 (lb/day) |
| LA City, DWP Valley Generating Station | AQ003673, AQ004396, AQ005031 | Facility: Sun Valley · ROG 6 · SOx 2 · CO 2 (lb/day) |
| Monier Lifetile | AQ000219, AQ000220 | Facility: Rialto · PM10 8 · CO 1 (lb/day) |
| The Boeing Company - C17 Program | AQ004986, AQ005112 | Facility: Long Beach · ROG 8 · CO 1 (lb/day) |
| Johns Manville Corp | 5 certificates (AQ005098 … AQ007470) | Facility: Corona · CO 9 (lb/day) |
| Mountainview Generating Station | AQ004796, AQ004797, AQ006328 | Facility: Redlands · ROG 1 · CO 7 (lb/day) |
| Baker Commodities Inc | AQ000559, AQ000693 | Facility: Vernon · PM10 4 · CO 4 (lb/day) |
| Energy & Environmental Research Corp | AQ000374, AQ003122 | Facility: Santa Ana · ROG 1 · CO 7 (lb/day) |
| US Gov'T Air Force Dept,march Air F Base | AQ000675, AQ000788 | Facility: Carson · NOx 1 · CO 4 (lb/day) |
| Fault Block III Unit, Wilmington Oil Fld | AQ000525 | Facility: Wilmington · CO 5 (lb/day) |
| Eastern Mun Water Dist | AQ000089, AQ000090, AQ000091 | Facility: Sun City · NOx 1 · ROG 1 · CO 1 (lb/day) |
| Rohr,inc | AQ006618 | Facility: Riverside · CO 3 (lb/day) |
| Sargent Fletcher Inc | AQ003147, AQ003156 | Facility: El Monte · ROG 1 · CO 1 (lb/day) |
| TRW Inc | AQ003510 | Facility: San Clemente · CO 2 (lb/day) |
| Adohr Farms Inc | AQ005210 | Facility: Los Angeles · CO 2 (lb/day) |
| Exxon Co U.S.A., Prod. Fac Tua 1 & 2 | AQ000015 | Facility: Wilmington · CO 1 (lb/day) |
| Yonekyu International Corp | AQ000180 | Facility: Los Angeles · CO 1 (lb/day) |
| Dan Copp Crushing Corp. | AQ000504 | Facility: Anaheim · CO 1 (lb/day) |
| Providence St Joseph Med Ctr | AQ000764 | Facility: Burbank · CO 1 (lb/day) |
| Lockheed Advanced Development Co | AQ000809 | Facility: Burbank · CO 1 (lb/day) |
| Oscar Mayer Foods Corp | AQ001019 | Facility: Vernon · CO 1 (lb/day) |
| Edgington Oil Company | AQ001034 | Facility: Long Beach · CO 1 (lb/day) |
| Inland Empire Energy Center, LLC | AQ005809 | Facility: Romoland · CO 1 (lb/day) |
| So Cal Gas Co/Playa Del Rey Storage Faci | AQ005908 | Facility: Playa Del Rey · CO 1 (lb/day) |
| Grey K Environmental Fund, LP | AQ006715 | Facility: Compton · CO 1 (lb/day) |
| Tauber Oil Company | AQ011144 | Facility: Diamond Bar · CO 1 (lb/day) |
No CO transactions were reported to CARB for South Coast AQMD in 2023. See the statewide price tables and CO prices in other districts for a reference range; local scarcity sets the price.
CO offset demand is episodic — most districts attain the CO standard — but large banked CO volumes exist (single certificates exceed 100 tons) and typically price accessibly, trading alongside other pollutants.
ERCs are district-bound: a CO credit banked in South Coast AQMD is usable in South Coast AQMD (or its air basin with district board approval). Tell us the tonnage your permit requires and we contact the holders above, confirm what is available, and can represent you as buyer's broker — no fee to inquire.
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