Banked ERC record · Yolo-Solano AQMD

University of California, Davis

19 certificates (EC-0193 … EC-0424)
NOx 16,400 lb/yr, ROG / VOC 5,810 lb/yr, PM10 10,424 lb/yr, SOx 635 lb/yr, CO 6,736 lb/yr

Home / District guides / Yolo-Solano AQMD / University of California, Davis

Certificate record

Holder of recordUniversity of California, Davis
Certificates19 certificates (EC-0193 … EC-0424)
Air districtYolo-Solano AQMD
Pollutants banked
PollutantVolume as recorded≈ tons / year
NOx16,400 lb/yr8.2
ROG / VOC5,810 lb/yr2.91
PM1010,424 lb/yr5.21
SOx635 lb/yr0.32
CO6,736 lb/yr3.37

The district records these volumes in lb/yr; the tons-per-year column is a straight conversion (lb/day × 365 ÷ 2,000; lb/qtr × 4 ÷ 2,000) for comparison only.

Register sourceDistrict ERC Registry, May 19, 2025 · district registry page
StatusBanked — not listed

19 certificates as the district lists them

CertificatePollutantAmount (lb/yr)
EC-0193PM10555
Q1–Q4: 142 / 126 / 126 / 161
EC-0194PM101,128
Q1–Q4: 271 / 271 / 292 / 294
EC-0198ROG / VOC
CO
NOx
SOx
PM10
139
Q1–Q4: 0 / 0 / 139 / 0
50
Q1–Q4: 0 / 0 / 50 / 0
1,587
Q1–Q4: 0 / 0 / 1,587 / 0
30
Q1–Q4: 0 / 0 / 30 / 0
307
Q1–Q4: 0 / 0 / 307 / 0
EC-0199ROG / VOC
CO
NOx
SOx
PM10
139
Q1–Q4: 0 / 0 / 139 / 0
446
Q1–Q4: 0 / 0 / 446 / 0
1,388
Q1–Q4: 0 / 0 / 1,388 / 0
30
Q1–Q4: 0 / 0 / 30 / 0
307
Q1–Q4: 0 / 0 / 307 / 0
EC-0200ROG / VOC
CO
NOx
SOx
PM10
139
Q1–Q4: 0 / 0 / 139 / 0
843
Q1–Q4: 0 / 0 / 843 / 0
1,289
Q1–Q4: 0 / 0 / 1,289 / 0
30
Q1–Q4: 0 / 0 / 30 / 0
307
Q1–Q4: 0 / 0 / 307 / 0
EC-0201ROG / VOC
SOx
PM10
210
Q1–Q4: 0 / 1 / 188 / 21
90
Q1–Q4: 0 / 0 / 81 / 9
451
Q1–Q4: 0 / 2 / 403 / 46
EC-0203ROG / VOC
SOx
PM10
225
Q1–Q4: 0 / 0 / 200 / 25
97
Q1–Q4: 0 / 0 / 86 / 11
484
Q1–Q4: 0 / 1 / 429 / 54
EC-0254SOx
PM10
252
Q1–Q4: 2 / 144 / 46 / 60
2,102
Q1–Q4: 15 / 1,203 / 384 / 500
EC-0257PM10479
Q1–Q4: 3 / 274 / 88 / 114
EC-0260ROG / VOC1,177
Q1–Q4: 8 / 674 / 215 / 280
EC-0261ROG / VOC386
Q1–Q4: 3 / 221 / 70 / 92
EC-0262ROG / VOC2,413
Q1–Q4: 17 / 1,381 / 441 / 574
EC-0297NOx2,247
Q1–Q4: 0 / 1,008 / 388 / 851
EC-0298NOx2,152
Q1–Q4: 0 / 664 / 737 / 751
EC-0299NOx2,152
Q1–Q4: 0 / 664 / 737 / 751
EC-0407ROG / VOC
CO
NOx
SOx
PM10
982
Q1–Q4: 148 / 233 / 350 / 251
5,397
Q1–Q4: 813 / 1,280 / 1,923 / 1,381
5,585
Q1–Q4: 841 / 1,325 / 1,990 / 1,429
106
Q1–Q4: 16 / 25 / 38 / 27
1,356
Q1–Q4: 204 / 322 / 483 / 347
EC-0422PM10752
Q1–Q4: 188 / 188 / 188 / 188
EC-0423PM10648
Q1–Q4: 162 / 162 / 162 / 162
EC-0424PM101,548
Q1–Q4: 387 / 387 / 387 / 387

Yolo-Solano issues credits by quarter; the annual figure is the sum of the four quarterly amounts shown.

Source: District ERC Registry, May 19, 2025 — Yolo-Solano AQMD, retrieved 2026-10-03.

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What these credits have sold for in Yolo-Solano

Prices per ton recorded by the district under Health & Safety Code §40709.5:

PollutantYearMedian $/tRangeTrades*
NOx2023
district records
$37,800$37,8001
NOx2023
CARB
$37,800$37,80021
NOx2022
district records
$75,000$75,0001
NOx2022
CARB
$75,000$75,0002
NOx2021
district records
$40,000$40,0001
NOx2020
district records
$37,800$37,8002
ROG / VOC2024
district records
$32,500$32,500–$55,00014
ROG / VOC2023
district records
$25,000$23,750–$40,00017
ROG / VOC2023
CARB
$25,000$23,750–$40,00021
ROG / VOC2021
district records
$25,000$25,0001
ROG / VOC2020
district records
$25,641$25,6411
ROG / VOC2019
district records
$25,000$25,0001
PM102024
district records
$17,500$17,5001
PM102023
district records
$17,500$17,5001
PM102023
CARB
$17,500$17,50021
PM102022
district records
$16,750$16,7502
PM102022
CARB
$16,750$16,7502
PM102021
district records
$21,140$17,000–$25,2802
PM102020
district records
$17,500$17,5001
SOx2023
district records
$17,000$17,0001
SOx2023
CARB
$17,000$17,00021
SOx2021
district records
$17,000$17,0001
CO2023
district records
$3,400$3,4001
CO2023
CARB
$3,400$3,40021
CO2021
district records
$3,391$3,3911

*For the CARB reports, every recorded transfer in the district that year, all pollutants; for the district's own transaction records, sales of that pollutant, at the price per ton the district records. Recent years shown; every recorded year. Sources: Yolo-Solano AQMD — ERC Transactions · CARB 2023 §40709.5 statewide report · CARB 2022 §40709.5 statewide report.

Reference value at recorded prices

Arithmetic only — the recorded volume multiplied by the Yolo-Solano median price recorded for each pollutant in 2020–2024, shown as a range because the medians moved between years. Not an appraisal, an offer, or a prediction; actual bids depend on the buyer's permit deadline, the lot size, how many trades the median rests on, and what else is available in the district.

PollutantVolume× recorded medianReference
NOx8.2 t$37,800–$75,000/t$310,000–$615,000
ROG / VOC2.91 t$25,000–$32,500/t$72,625–$94,413
PM105.21 t$16,750–$21,140/t$87,301–$110,000
SOx0.32 t$17,000/t$5,398
CO3.37 t$3,391–$3,400/t$11,421–$11,451
All pollutants with a recorded Yolo-Solano price$487,000–$836,000

How a transfer works in Yolo-Solano

The buyer and holder agree a price privately. The transfer package — the holder's authorization, the purchase agreement, and the district's transfer forms — goes to Yolo-Solano AQMD, which verifies the banked reductions, records the transfer, and re-issues the certificate (or the remaining balance) in the buyer's name. Credits are generally usable only inside Yolo-Solano AQMD, or its air basin with district board approval under Health & Safety Code §40709.6. District office: (530) 757-3673. District ERC program page.

Need credits in Yolo-Solano for a permit? Post what you need and the Exchange checks this and every other Yolo-Solano record for you, no fee to inquire.