Current through Register Vol. 35, No. 18, September 24, 2024
The permittee may include in the permit application one or
more of the reasonably available control measures included in 20.11.20.23 NMAC
or one or more alternative fugitive dust control measures, including measures
taken to comply with any other statute or regulation if the measures will
effectively control fugitive dust during active operations or on inactive
disturbed surface areas. At minimum, all projects requiring a fugitive dust
control construction permit shall utilize paved or gravel entry/exit aprons,
steel grates or other devices capable of removing mud and bulk material from
vehicle traffic tires, and erect a properly-maintained fabric fencing material
around the perimeter of the disturbed surface area with openings no wider than
necessary to allow vehicles to enter or exit the area. The fencing material
shall be anchored approximately six inches below the surface on the bottom
edge, and when installed shall be approximately 30 or more inches above the
existing natural or man-made surface. To maintain effectiveness of the
entry/exit apron, steel grate or other similar device (device), accumulated
materials shall be removed promptly. To maintain effectiveness of the fence,
fugitive dust that accumulates on either side of the fencing shall be removed
promptly.
A. Unpaved roadways:
(1) paving using recycled asphalt,
routinely-maintained asphalt millings, asphaltic concrete, concrete, or
petroleum products legal for such use;
(2) using dust suppressants applied in
amounts, frequency and rates recommended by the manufacturer and maintained as
recommended by the manufacturer;
(3) using wet suppression; or
(4) using traffic controls, including
decreased speed limits with appropriate enforcement; other traffic calming
methods, vehicle access restrictions and controls; road closures or barricades;
and off-road vehicle access controls and closures.
B. Paved roadways:
(1) cleaning up spillage and track out as
necessary to prevent pulverized particulates from being entrained into the
atmosphere;
(2) using on-site wheel
washes; or
(3) performing regularly
scheduled vacuum street cleaning or wet sweeping with a sweeper certified by
the manufacturer to be efficient at removing particulate matter having an
aerodynamic diameter of less than 10 microns (i.e.
PM10).
C. Trucks hauling bulk materials on public
and private roadways:
(1) using properly
secured tarps or cargo covering that covers the entire surface area of the
load;
(2) preventing leakage from
the truck bed, sideboards, tailgate, or bottom dump gate;
(3) using wet suppression to increase
moisture content of the bulk materials being hauled;
(4) using dust suppressants applied in
amounts, frequency and rates recommended by the manufacturer; or
(5) maintaining a minimum of six inches of
freeboard from the rim of the truck bed; freeboard means the vertical distance
from the highest portion of the load abutting the bed and the lowest part of
the top rim of the truck bed.
D. Active operations in construction areas
and other surface disturbances:
(1) Short
term control measures may include:
(a) wet
suppression;
(b) dust suppressants
applied in amounts, frequency and rates recommended by the manufacturer and
maintained as recommended by the manufacturer;
(c) watering the site at the end of each
workday sufficiently to stabilize the work area;
(d) applying dust suppressants in amounts,
frequency and rates recommended by the manufacturer on the worksite at the end
of each workweek if no active operations are going to take place over the
weekend or if active operations stop for more than two consecutive
days;
(e) starting construction at
the location that is upwind from the prevailing wind direction and stabilizing
disturbed areas before disturbing additional areas;
(f) stopping active operations during high
wind; or
(g) clean up and removal
of track-out material.
(2) Long term control measures may include:
(a) site stabilization using dust
suppressants applied in amounts, frequency and rates recommended by the
manufacturer and maintained as recommended by the manufacturer;
(b) reseeding using native grasses as
specified in 20.11.20.24 NMAC;
(c)
xeriscaping;
(d) installing
parallel rows of fabric fencing or other windbreaks set perpendicular to the
prevailing wind direction either onsite or on a nearby property with the
permission of the nearby property owner;
(e) surfacing with gravel or other mulch
material with a size and density sufficient to prevent surface material from
becoming airborne;
(f) mulching and
crimping of straw or hay as specified in Subsection D of 20.11.20.24
NMAC;
(g) installing permanent
perimeter and interior walls;
(h)
using conventional landscaping techniques; or
(i) clean up and removal of track-out
material.
E.
Bulk material handling:
(1) using spray
bars;
(2) applying wetting agents
(surfactants) to bulk material;
(3)
using wet suppression through manual or mechanical application;
(4) adding dust suppressants to bulk
materials in amounts, frequency and rates recommended by the manufacturer and
maintained as recommended by the manufacturer;
(5) stopping bulk material handling,
processing, loading or unloading during high wind conditions;
(6) reducing process speeds; or
(7) reducing drop heights.
F. Industrial sites:
(1) paving roadways and parking area with
recycled asphalt, asphaltic concrete, concrete, or petroleum products legal for
use;
(2) performing regularly
scheduled vacuum street cleaning or wet sweeping;
(3) regularly using wet suppression on
unpaved areas;
(4) using dust
suppressants applied in amounts, frequency and rates recommended by the
manufacturer, and maintained as recommended by the manufacturer;
(5) installing wind breaks;
(6) installing enclosures;
(7) installing on-site anemometers to measure
wind speed; the anemometer should trigger a suitable warning mechanism such as
a strobe light or an audible alarm (that will not violate any applicable noise
ordinance) to notify on-site personnel of high wind conditions;
(8) increasing wet suppression applications
before and during high wind conditions; or
(9) stopping active operations during high
wind conditions.
G.
Demolition and renovation activities when asbestos-containing materials are not
present:
(1) using constant wet suppression on
the debris piles during demolition;
(2) using water or dust suppressants on the
debris pile, applied in amounts, frequency and rates recommended by the
manufacturer;
(3) using
enclosures;
(4) using curtains or
shrouds;
(5) using negative
pressure dust collectors; or
(6)
stopping demolition during high wind conditions.
H. Milling, grinding or cutting of paved or
concrete surfaces:
(1) constantly using wet
suppression;
(2) continuous wet
sweeping during milling, grinding, or cutting operations;
(3) using dust suppressants applied in
amounts, frequency and rates recommended by the manufacturer, and maintained as
recommended by the manufacturer;
(4) using enclosures; or
(5) using curtains or shrouds.
I. Pressure blasting operations:
(1) using non-friable abrasive
material;
(2) using curtains,
enclosures or shrouds;
(3) using
negative pressure dust collectors;
(4) using constant wet suppression;
(5) maintaining ongoing clean up of abrasive
material; or
(6) stopping active
operations during high wind conditions.
J. Spray painting and other coatings:
(1) using enclosures that comply with
applicable fire codes; or
(2) using
curtains, enclosures or shrouds.
K. High wind contingency measures:
(1) installing and using on-site anemometers
to measure wind speed; the anemometer should trigger a suitable warning
mechanism such as a strobe light or an audible alarm that will not violate any
applicable noise ordinance to notify on-site personnel of high wind
conditions;
(2) using constant wet
suppression;
(3) using dust
suppressants applied in amounts, frequency and rates recommended by the
manufacturer;
(4) using wetting
agents or surfactants on disturbed areas, bulk materials or
stockpiles;
(5) slowing down
process; or
(6) shutting down
active operations.
L.
Stockpile Formation:
(1) Active stockpiles:
(a) applying wet suppression on a regular
basis;
(b) utilizing wind breaks
(fabric fencing or other materials);
(c) reducing vehicle speeds or using other
traffic calming measures (e.g. sculpted piles); or
(d) restricting access to stockpile areas
during non-work hours.
(2) Inactive stockpiles:
(a) maintaining a stable outer crust over
stockpile area;
(b) using dust
suppressants applied in amounts, frequency and rates recommended by the
manufacturer, and maintained as recommended by manufacturer;
(c) restricting access to stockpile areas;
or
(d) utilizing wind breaks
(fabric fencing or other materials).
