PARTICULATE
MATTER (PM-10)
(Adopted 10/10/94; revised 11/25/96; revised 11/08/2005)

A. General
Description

The purpose of this regulation is to reduce the amount of fine Particulate Matter (PM-10)
entrained in the ambient air as a result of emissions generated from anthropogenic
(man-made) Fugitive Dust (PM-10) sources generated from within Imperial County by
requiring actions to prevent, reduce, or mitigate PM-10 emissions. The Rules contained
within this Regulation have been developed pursuant to United States Environmental
Protection Agency guidance for Serious PM10 Non Attainment Areas.

B. Applicability

The requirements of this rule shall apply to any Active Operation, and/or man-made or
man-caused condition or practice capable of generating Fugitive Dust (PM-10) as
specified in this Regulation except those determined exempt as defined in Part E of this
Rule. The definitions, exemptions, requirements, administrative requirements
recordkeeping requirements, and test methods set forth in this rule are applicable to all
the rules under Regulation VIII (Fugitive Dust Requirements) of the Rules and
Regulations of the Imperial County Air Pollution Control District.

C. Definitions


For the purpose of this Regulation, the following terms are defined:

C.1
ACTIVE
OPERATION:
Activities
capable of generating Fugitive Dust (PM-10),
including but not limited to, Earthmoving Activities, Construction activities,

Unpaved Roads, Track-Out/Carry-Out, Bulk Material storage and transport,
Unpaved Haul/Access Roads.


C.2
AGGREGATE MATERIALS: Consists of sand, Gravel, quarried stone and/or
rock fragments that are typically used in Construction. Aggregates may be
natural, artificial or recycled.


C.3 ANEMOMETRS: Are devices used to measure wind speed and direction in
accordance with manufacturers performance standards, maintenance and
calibration criteria.

C.4
ANNUAL
AVERAGE
DAILY VEHICLE TRIPS: annual average 24-hour total
of all vehicles counted on a road.


C.5
APCD: The Imperial County Air Pollution Control District.
C.6
APCO: The Imperial County Air Pollution Control Officer.

C.7
AVERAGE VEHICLE TRIPS PER DAY: Means the average number of vehicles
that cross a given point surface during a specific 24-hour period as determined by
the most recent Institute of Transportation Engineers trip generation manual, tube
counts, or observations.

C.8
BLM: The Bureau of Land Management.

C.9
BP: The United States Border Patrol.


C.10 BULK MATERIAL: Earth, rock, Silt, sediment, sand, Gravel, soil, fill,
Aggregate, dirt, mud, debris, and other organic and/or inorganic material
consisting of or containing Particulate Matter with five percent or greater Silt
content. For the purpose of this Regulation, the Silt content level is assumed to be
5 percent or greater, unless the Person responsible for the Active Operation
conducts the applicable laboratory tests and demonstrate that the Silt content is
less than 5 percent. Active Operations seeking to determine if the Silt content is
less than five percent are required to conduct the laboratory analysis in
accordance with ASTM method C-136-a (Standard Test Method for Sieve
analysis of Fine and Coarse Aggregates), or other equivalent test methods
approved by EPA, ARB, and the APCD.


C.11 CANAL BANK: A rise of land on either side of an irrigation canal.


C.12
CHEMICAL
STABILIZATION/SUPPRESSION: A means of Fugitive Dust
(PM-10) control implemented to mitigate PM-10 emissions by applying
petroleum resins, asphaltic emulsions, acrylics, adhesives, or any other materials
approved for use by the California Air Resources Board (CARB), U.S.
Environmental Protection Agency (U.S. EPA) and/or the APCO.


C.13 CONSTRUCTION: Any on-site mechanical activities preparatory to or related to
the building, alteration, rehabilitation, or demolition of an improvement on real
property, including, but not limited to, land clearing, excavation related to
construction, land leveling, grading, cut and fill grading, and the erection or
demolition of any structure. As used in Regulation VIII, a construction site may
encompass several contiguous parcels, or may encompass only a portion of one
parcel, depending on the relationship of the property boundaries to the actual
construction activities.


C.14 DESIGNATED REPRESENTATIVE: The agent for a Person. The Designated
Representative shall be responsible for and have the full authority to implement
BACM on behalf of the Person.


C.15 EARTHMOVING ACTIVITIES: The use of any equipment for an activity that may generate Fugitive Dust emissions, including, but not limited to, cutting and
filling, grading, leveling, excavation, trenching, loading or unloading of Bulk
Materials, demolishing, drilling, adding to or removing bulk of materials from
open storage piles, weed abatement through disking, and back filling.


C.16 FUGITIVE DUST: The Particulate Matter entrained in the ambient air which is
caused from man-made and natural activities such as, but not limited to,
movement of soil, vehicles, equipment, blasting, and wind. This excludes
Particulate Matter emitted directly in the exhaust of motor vehicles or other fuel
combustion devices, from portable brazing, soldering, or welding equipment, pile
drivers, and stack emissions from stationary sources.


C.17 GRAVEL: Gravel travelways shall have a three (3) inch minimum depth
Stabilized Surface. The travelway shall have a relative compaction of not less
than 95% as determined by Test Method No. California 216 of State of California,
Business and Transportation Agency Department of Transportation, and
conforming to the following grading:








¾ Maximum
Sieve
Designation
Percent
Passing
1
100
¾
90-100
#4

35-60
#30
10-30
#200
2-9











Reference: California Department of Transportation Standard Specification



Section 26/class II Aggregate Base



C.18 HAUL/ACCESS ROAD: Any on-site road used for commercial, industrial,
institutional, and/or governmental traffic.

C.19 HAUL TRUCK: Any fully or partially open-bodied licensed motor vehicle used
for transporting Bulk Material for industrial or commercial purposes.


C.20 IMPLEMENT OF HUSBANDRY: An unlicensed vehicle which is used
exclusively in the conduct of Agricultural Operations. An Implement of
Husbandry does not include a vehicle if its existing design is primarily for the
transportation of persons or property on a highway, unless specifically designated
as such by some other provision of the Vehicle Code of California.


C.21 NON-RESIDENTIAL AREA: Any unpaved vehicle and equipment traffic area
operated at any commercial, manufacturing or government sites.


C.22 MODIFIED PAVED ROAD: Any Paved Road that is widened or improved so as
to increase traffic capacity. This term does not include road maintenance, repair,
chip seal, pavement or roadbed rehabilitation that does not affect roadway geometrics, or surface overlay work.


C.23 OFF-FIELD AGRICULTURAL SOURCE: Any Agricultural Source or activity at
an Agricultural Source that falls into one or more of the following categories:

C.23.a
Outdoor
handling,
storage
and transport of Bulk Material;

C.23.b
Paved
Road;

C.23.c
Unpaved
Road;
or

C.23.d
Unpaved
Traffic
Area.


C.24 OFF-ROAD VEHICLE: Any nonstationary device, powered by an internal
combustion engine or motor, used primarily off the highways to propel, move, or
draw persons or property including any device propelled, moved, or drawn
exclusively by human power, and used in, but not limited to, any of the following
applications: marine vessels, construction/farm equipment, utility and lawn and
garden equipment, off-road motorcycles, and off-highway vehicles.


C.25 ON-FIELD AGRICULTURAL SOURCE: Any Agricultural Source or activity at
an Agricultural Source that is not an Off-Field Agricultural Source, including (but
not limited to) the following:



C.25.a Activities conducted solely for the purpose of preparing land for the
growing of crops or the raising of fowl or animals, such as brush or timber
clearing, grubbing, scraping, ground excavation, land leveling, grading,
turning under stalks, disking, or tilling;

C.25.b
Drying
or
pre-cleaning of agricultural crop material on the field where it
was harvested;



C.25.c Handling or storage of agricultural crop material that is baled, cubed,
pelletized, or long-stemmed, on the field where it was harvested, and the
handling of fowl or animal feed materials at sites where animals or fowl
are raised;



C.25.d Disturbances of cultivated land as a result of fallowing, planting,
fertilizing or harvesting.


C.26 OPEN AREA: Any of the following described in Subsection C.26.a through
C.26.c of this rule. For the purpose of this rule, vacant portions of residential or
commercial lots and contiguous parcels that are immediately adjacent to and
owned and/or operated by the same individual or entity are considered one open
area. An open area does not include any Unpaved Traffic Area as defined in this
rule.

C.26.a An un-subdivided or undeveloped land adjoining a developed (or partially
developed) residential, industrial, institutional, governmental, or
commercial area.

C.26.b A subdivide