Northern Sonoma County APCD Emission Reduction Credits
The district has confirmed it currently holds no banked Emission Reduction Credits. None banked
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Banked credits in Northern Sonoma County APCD
The district has confirmed in writing that it currently holds no banked Emission Reduction Credits on file, and therefore has no current ERC transaction report. This reflects the district response available to us, not a guarantee that no credits have since been issued.
Northern Sonoma County APCD: contacts, banking rule and fees
From the district’s own pages, rules and forms, each fact linked to where it is published. Last verified 2026-10-06. Rules and fees change; confirm with the district before you file.
| District office | 625 Center Street, Healdsburg, CA 95448 (source) (707) 433-5911 (source) |
|---|---|
| Permitting contact | 707-433-5911; airquality@sonomacounty.gov (free permit consultation) (source) |
| District pages | Rules · Permit forms |
| Banking rule | None found: no ERC/banking rule; none in EPA-approved compiled SIP rules (https://www.epa.gov/system/files/documents/2022-09/epa-approved-compiled-northern-sonoma-county-apcd-california-sips.pdf) |
| Banking application | No banking application form published |
| Banking fee | Not published by the district |
| Timelines in the rule | The rule states no processing timeline |
| ERC register | no published ERC register; district confirms no banked credits |
How ERCs work in Northern Sonoma County APCD
Emission Reduction Credits are banked, district-certified reductions in NOx, ROG/VOC, PM10, SOx, or CO. Businesses building or expanding in the district may be required under New Source Review to purchase ERCs to offset new emissions before an air permit issues. Credits are generally usable only within Northern Sonoma County APCD (or its air basin with district board approval, Health & Safety Code §40709.6), which is why local scarcity sets the price. The district verifies reductions and records every transfer.
District office: (707) 433-5911. District ERC program page.
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