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APCD - Air Monitoring

District monitors for ozone and particulate matter, as mandated by the State and Local Air Monitoring System (SLAMS), as well as acid rain. The District operates and maintains all monitoring equipment.

  • Acid Rain: The District has one rain gauge and precipitation collector located near the Siskiyou County Airport. A new collection bucket is installed every Tuesday. Precipitation samples are sent to the National Atmospheric Deposition Program National Trends Network (NADP/NTN) for analysis and reporting.

  • Ozone: The Yreka monitor continuously analyzes and records ambient ground-level ozone concentrations. Data is checked for errors, processed, and reported to the California Air Resources Board (CARB) quarterly. Precision checks are made and recorded regularly to insure data integrity.

  • Particulates: Particulate matter less than 2.5 microns (PM2.5) in diameter is monitored in Yreka. Once every six-days the District exposes pre-conditioned filters for 24-hours and returns the filters to the CARB PM analysis laboratory to calculate particulate mass concentrations and report to the Environmental Protection Agency (EPA). A continuous PM2.5 monitor in Yreka is under development that will eventually replace the 1-in-6 day monitor.

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Air Pollution Control Resource Center

Resource Title Downloadable File Type
Agenda - Air Pollution Control District April 17, 2018 Meeting Download File Other
Agenda - Air Pollution Control District March 6, 2018 Meeting Download File Other
Agenda - Air Pollution Control District October 17, 2017 Meeting Download File Other
Air Quality Index Particle Pollution Table Download File Guide
Annual Air Monitoring Network Report 2015 Download File Report
ATC/PTO - Authority to Construct - Permit to Operate Application Download File Application
ATC/PTO - Supplemental Application - Power Generators Download File Application
ATC/PTO - Supplemental Application - Baghouse/DustCollector Download File Application
ATC/PTO - Supplemental Application - Boilers, Dryers & Process Heaters Download File Application
ATC/PTO - Supplemental Application - Cyclone/Inertial Separator Download File Application
ATC/PTO - Supplemental Application - Rock Crushing Download File Application
BURN - Are you Burning? Permits Required Flyer Download File Other
BURN - Burn Barrel Ban Flyer from 2004 Download File Other
BURN - Burning Rules for Residential and Non-Agricultural Burning Download File Policy
BURN - Current Burn Barrel Restriction Area Map Download File
GRANT - Carl Moyer Off Road Compression-Ignition Application Download File Application
GRANT - School Bus Application Package Download File Application
NOA - Dust Mitigation Plan Application Download File Application
Northeast Air Alliance Smoke Management Plan - prescribed burning Download File Application
Public Records Request - form and guidelines Download File Request

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