Certificate 1851 · Site: Hayward
NOx 0.02 t/yr
Home / District guides / Bay Area AQMD / CriticalPath Environmental Services
| Holder of record | CriticalPath Environmental Services | ||||
|---|---|---|---|---|---|
| Certificate | 1851 | ||||
| Source of reductions | Site: Hayward | ||||
| Air district | Bay Area AQMD | ||||
| Pollutants banked |
| ||||
| Register source | ERC Bank Status database (baaqmd.gov), retrieved 2026-10-03 · district registry page | ||||
| Status | Banked — not listed |
| Certificate | Issued | Pollutant | Amount (t/yr) |
|---|---|---|---|
| 1851 | 2021-09-07 | NOx | 0.02 |
Source: ERC Bank Status database (baaqmd.gov), retrieved 2026-10-03 — Bay Area AQMD, retrieved 2026-10-03.
It is already public record in the Bay Area register. Listing it on the Exchange is free, commits you to nothing, and puts it in front of the permit applicants and consultants searching this page. We verify the certificate against the register before anything goes live, and inquiries route straight to you or your broker.
List 1851 for sale Ask the Exchange about this record
Prices per ton recorded by the district under Health & Safety Code §40709.5:
| Pollutant | Year | Median $/t | Range | Trades* |
|---|---|---|---|---|
| NOx | 2023 CARB | $29,000 | $23,236– | 7 |
| NOx | 2022 CARB | $22,000 | $7,974– | 21 |
*For the CARB reports, every recorded transfer in the district that year, all pollutants. Recent years shown; every recorded year. Sources: CARB 2023 §40709.5 statewide report · CARB 2022 §40709.5 statewide report.
Arithmetic only — the recorded volume multiplied by the Bay Area median price recorded for each pollutant in 2022–2023, 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.
| Pollutant | Volume | × recorded median | Reference |
|---|---|---|---|
| NOx | 0.02 t | $22,000– | $440– |
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 Bay Area 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 Bay Area AQMD, or its air basin with district board approval under Health & Safety Code §40709.6. District office: (415) 749-5000. District ERC program page.
Need NOx credits in Bay Area for a permit? Post what you need and the Exchange checks this and every other Bay Area record for you, no fee to inquire.