General notifications

Air monitoring

Dust control measures

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:

• Rule 1466 Instrument Log

• Rule 1466 PM₁₀Monitoring Log

• Rule 1466 Stockpile Log

• Rule 1466 Earth-Moving Activity Log

• Rule 1466 Transportation Log

• Rule 1466 Complaint Log

Operate, maintain, and calibrate, continuous direct-reading near real-time ambient PM₁₀ monitors, identical in make and model, from the list of Executive Officer pre-approved PM₁₀monitors

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

Maintain accurate data and instrument records using the Instrument Log and PM₁₀ Monitoring Log

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