Rule 1466 compliance & SCAQMD: 3 Simple Steps
11 October 2023
16 April 2019
All earth-moving operations at notified remediation sites in California involve Rule 1466 compliance. It applies to all parts of California regulated by the South Coast Air Quality Management District (SCAQMD). The rule ensures that off-site fugitive dust emissions containing toxic air contaminants are minimized. It came into effect in early 2018. For an overview of Rule 1466, we have compiled “Everything you need to know about SCAQMD Rule 1466” in a previous blog.
There are three simple steps to comply with Rule 1466:
Dust control measures
Download our Rule 1466 Visual Guide
Our visual guide to Rule 1466 compliance, created with input from SCAQMD and LA-based environmental consultants, is now available to download.
1. General notifications
Notify SCAQMD at least 72 hours and no more than 30 days prior to earth-moving activities by submitting
Submit a map indicating specific location(s) of each earth-moving activity, concentrations of applicable toxic air contaminant(s) and, location of PM10 monitors
Install SCAQMD approved signs at all entrances and at intervals of 1,000 feet along the property line
Notify SCAQMD within 72 hours of a PM10 exceedance by submitting: Rule 1466 Exceedance Notification Online Form
Notify SCAQMD within 48 hours of an emergency by submitting: Rule 1466 Emergency Notification Online Form
Notify SCAQMD to request an alternative provision by submitting: Rule 1466 Alternate Provision Request Online Form
Maintain accurate recordkeeping by using:
2. Air monitoring
Place one upwind monitor (minimum) where the location is indicative of background PM10 levels and one downwind monitor (minimum) in the seasonal prevailing wind direction downwind of earth-moving activity and close to the property line
Monitor wind direction and speed during earth-moving activities using approved Meteorological Measurements
Calculate PM10 concentration averaged over 2 hours, starting at the top of each hour, where PM10 concentration is the absolute difference between upwind and downwind monitors
Cease earth-moving activities if the PM10 concentration averaged over 2 hours exceeds 25 µg/m3
Apply dust control measures until PM10 concentration is ≤25 µg/m3 averaged over 30 minutes
Cease earth-moving activities if wind gusts exceed 25 mph or >15 mph averaged over 15 minutes
Use a data acquisition system to collect and record PM10 concentrations
3. Dust control measures
Install fencing and windscreen 6-foot tall and at least as high as the tallest stockpile
Adequately wet to the depth of earth-moving activity at frequencies to prevent visible dust plumes
Stabilize all vehicular traffic surfaces areas with gravel, paving, or dust suppressant
Remove any track-out using a vacuum equipped with an approved filter
Install vehicle and wheel washing systems to remove soil from tires and vehicles
Segregate and label soil stockpiles with applicable toxic air contaminant(s)
Apply dust suppressant to stockpiles and chemically stabilize and/or completely cover with approved plastic sheet
Apply dust suppressant to material prior to loading and unloading; and remove any spilled soil
On-site Dust Control Supervisor who has a valid Certificate of Completion of SCAQMD Fugitive Dust Control Class
What Rule 1466 solutions does Aeroqual offer?
Aeroqual’s Dust Sentry PM10 monitor is pre-approved by SCAQMD, ensuring your construction and remediation projects comply with Rule 1466. It seamlessly reports data in the required format and frequency using our integrated software platform.
Track real-time data in line with Rule 1466 and receive automatic alerts sent direct to your wireless device using Aeroqual Site Contribution, our automated remediation monitoring software. Aeroqual Site Contribution features selectable air quality regulations (including Rule 1466 and simplified NY DER-10, with more regulations to follow) that optimize your data for local legislative requirements while ensuring safe, efficient remediation.
Air monitoring made easy
Take the time and hassle out of your next project with a real-time air quality monitoring solution.