ATTACHMENT K

PROPOSED RULE 403

COACHELLA VALLEY AGRICULTURAL HANDBOOK

## FINAL



# Rule 403 Coachella Valley

Agricultural Handbook

Measures to Reduce Dust from Agricultural Operations in the

Coachella Valley

Prepared by

South Coast A ir Quality

Management District

April 2004Draft Rule 403 Coachella Valley Agricultural Handbook



### As you may be aware, our air quality is among the worst in the nation for dust and

soot, or more technically, small suspended particulate matter. Although agricultural

operations are not among the largest cont ributors to this problem in this area, federal law

requires that all sources here implement best available control measures on their dust

sources.

South Coast Air Quality Management District (AQMD) staff, in conjunction with the

Riverside County Farm Bure au, Coachella Valley producers, and local representatives from

the Natural Resources Conservation Service (NRCS) has developed the enclosed

conservation practices to reduce dust from agricultural operations and to help clean our air

and meet federal requir ements. The list of conservation practices represents a menu

approach in which producers can select the practices that are most appropriate for their

specific operations. Producers that voluntarily implement the suggested minimum number

of conservation p ractices for each category in Section II by December 31, 2004 and

complete and maintain the self

- monitoring form in Section V of this document will maintain

an exemption from AQMD's stringent fugitive dust regulations. If your farm is smaller than

10 cont iguous acres or is primarily used for the purpose of raising fowl or animals you do

not have to implement the conservation practices, however, they are recommended to

preserve your soil by minimizing dust lost to the air. If your farm is within the South Coast

Air Basin (Orange County, western Riverside County, and the non

- desert portions of Los

Angeles and San Bernardino Counties) there is a separate list of conservation practices that

must be implemented to maintain a Rule 403 exemption.

These conservati on practices were developed through an open process with

producers and their local agricultural agency representatives. If you have any questions,

comments, or would like assistance in interpreting the conservation practices, please contact

the AQMD at (9 09) 396

- 2000, or your local farm bureau, RCD, or NRCS. Additional

information on conservation practices can be found by calling the phone numbers listed on

page 3 of this packet.

The AQMD would like to thank you for your efforts to keep our skies clear.Draft Rule 403 Coachella Valley Agricultural Handbook



### TABLE OF CONTENTS

Page

Section I

Purpose

...... 1
Rule 403 Applicability 1

Conservation Practice Selection 2

Alternative Conservation Practices 3

Technical Justifications 3
Conservation Practice Implementation Guidance 3

Section II

Active Conservation Pr actices 4

Inactive Conservation Practices 5

Farm Yard Area Conservation Practices 7

Track

- Out Conservation Practices 8
Unpaved Road Conservation Practices 9
Storage Pile Conservation Practices 10

Section III

Submittal Instructions for Alternative Conserva tion Practices 11

Section IV

Submittal Instructions for a Justification Statement 12

Section V

Conservation Practice Self

- Monitoring Form 13

Section VI
Opting for Rule 403 general provisions 16
Failure to comply with Rule 403 17

LIST OF FIGURES

Figure 1: Boundaries of the Coachella Valley 1Draft Rule 403 Coachella Valley Agricultural Handbook

(1/17) April 2004 

## Section I

Purpose

To reduce the dust and corresponding PM10 emissions ( P articulate M atter less than 10 microns in diameter) generated from agricultural operations and to meet federal requirements to implement appr opriate particulate matter reduction programs. 

## Rule 403 Applicability

Agricultural operations that have 10 contiguous acres or less or are primarily used for the purpose of raising fowl or animals will remain exempt from Rule 403. Agricultural operations in excess of 10 contiguous acres and are conducted within the Coachella Valley (see Figure 1 below) can voluntarily implement the conservation practices and complete the self

- monitoring form no later than January 1, 2005, and maintain their exemption from all Rule 403 requirements. After January 1, 2005, producers who do not implement the conservation practices become subject to all other Rule 403 requirements. Failure to meet Rule 403 requirements may result in mandatory conservation class(es), required dust control plans, fines, or other penalties.



### FIGURE 1Draft Rule 403 Coachella Valley Agricultural Handbook

(2/17) April 2004 

## Section I

Conservation Practice Selection

Producers who voluntarily implement the minimum number of conservation practices listed under each category in Section II by January 1, 2005, and complete and maintain

the self

- monitoring form (Section V) will be exempt from the requirements of Rule 403. The list of conservation practices may be updated periodically to reflect any new developments in control technology. Producers that do not elect to impl ement sufficient conservation practices become subject to all Rule 403 requirements beginning January 1,

2005.

The list of conservation practices is divided into the six categories presented below. The italicized text underneath the category descriptions represent the minimum number of conservation practices to be implemented in order to maintain a Rule 403 exemption. Producers can also choose alternative conservation practices or provide a technical justification if the minimum number of conservation pra ctices for a category (e.g., inactive) can not be implemented on

- site (see Sections III and IV).

1. Active

- applicable to agricultural activities involved in disturbing the soil (not applicable to established orchards, vine crops, nurseries, range land, and irrigated pasture).

(producers must cease activities during wind conditions greater than 25 mph (as specified in AQMD Rule 403.1 and implement at least one of the other conservation practices. Additional information on the tilling prohibitions is included Section II under the heading

– Activity Modification)

2. Inactive

- applicable to agricultural sites when no soil disturbance activities are being

conducted (not applicable to established orchards, vine crops, nurseries, range land, and irrigated pasture)

(at least three of the conservation practices must be implemented within this category)

3. Farm Yard Areas

- applicable to disturbed surfaces used by people or vehicles (e.g., equipment storage yards) on at least eight calendar days per year

(at least one of the conservation practices must be implemented within this category)

4. Track

- Out

- applicable to vehicles or other equipment carrying soil from an unpaved surface to a paved public road

(at least one of the conservation practices must be implemented within t his category)

5. Unpaved Roads

- applicable to private unpaved roads used by producers

(producers must implement a surface treatment when more than 25 vehicles per day use an unpaved and at least one of the conservation practices must be implemented during

ot her time periods)

6. Storage Piles

- applicable accumulations of material

(at least one of the conservation practices must be implemented within this category)Draft Rule 403 Coachella Valley Agricultural Handbook

(3/17) April 2004 

## Section I

Alternative Conservation Practices

Producers can implement alternative conservation prac tices that are more suitable to their specific farming operations. Producers that elect to implement alternative conservation practices and want to qualify for the Rule 403 exemption must provide a description of the alternative conservation practices to the AQMD. Please refer to Section III (page 11) of this Handbook for AQMD submittal instructions.


## Technical Justifications

In the event that there are special technical (e.g., non

- economic) circumstances, including safety, which prevent implementation of the minimum number of conservation practices for each category in Section II, producers can submit a justification statement to the AQMD. The justification statement must explain the reason(s) why the suggested minimum number of conservation practices wi thin a category can not be implemented

on

- site. Please refer to Section IV (page 12) of this Handbook for AQMD submittal

instructions. 

## Conservation Practice Implementation Guidance

Technical assistance with selecting, adopting, and implementing any of the conservation practices listed in Section II is available, free of charge, from your local Farm Bureau, Resource Conservation District (RCD), or Natural Resources Conservation Service (NRCS) office. Cost

- sharing incentives to implement practices that redu ce dust may also be available from these resource agencies. Phone numbers of local Farm Bureau, Riverside County Cooperative Extension, RCD, and NRCS offices are listed below.

Farm Bureau/NRCS/RCD Offices

Riverside County Farm Bureau (909) 684

- 6732

River side County Cooperative Extension (909) 683

- 6491

Riverside Resource Conservation District (909) 683

- 7691

Indio NRCS offices (760 ) 347

- 3675Draft Rule 403 Coachella Valley Agricultural Handbook

(4/17) April 2004 

## Section II

1. Active Conservation Practices

Exempted operations: established orchards, date groves, vine crops, nur series, range land,
and irrigated pasture

Producers that want a Rule 403 exemption must implement the Activity Modification
conservation practice and at least one of the other conservation practices.

Activity Modification (Mandatory)

Cease agricultural til ling or soil mulching activities (does not include harvesting
activities) during wind conditions in excess of 25 miles per hour (mph) consistent with
AQMD Rule 403.1 paragraphs (d)(5) and (i)(3). A one

- day exemption from this
prohibition is allowed if win d conditions in excess of 25 mph have occurred on six hours
or more hours on each of two previous consecutive days. Additionally, if 25 mph wind
conditions have occurred during sixty or more cumulative hours of active operations

within a calendar month, t he tilling / soil mulching prohibitions will no longer be
applicable for the remainder of the month. To invoke these exemptions, records of wind
conditions must be maintained and made available to the Executive Officer upon request.

Producers that want a Rule 403 exemption must implement at least one of the other four
conservation practices listed below.

1. Soil Moisture Monitoring

Ensure adequate soil moisture levels at the time of tillage or soil maintenance activities to
prevent visible dust emissions from extending more than 100 feet from any source within
the agricultural parcel.

2. Irrigation System

Irrigate or bed fields as soon as feasible based on Coachella Valley crop schedule after
land leveling or releveling to prevent the field being left i n a smooth dry condition. If the
field will not be planted based on the Coachella Valley crop schedule, then stabilize or
implement Inactive Conservation Practices (e.g., surface roughing, cover crop, etc.).

3. Minimum Tillage

Utilize conservation tilla ge practices to manage the amount, orientation and distribution
of crop and other plant residues on the soil surface year

- round, while growing crops in
narrow slots or tilled strips. Your local NRCS, RCD, or Riverside County Cooperative
Extension office c an provide guidance on various minimum tillage practices.

4. Mulching

Uniformly distribute plant residues, manure, or other suitable materials not produced on
the site to the soil surface prior to disturbing the soil.Draft Rule 403 Coachella Valley Agricultural Handbook

(5/17) April 2004 

## Section II

2. Inactive Conservation Pr actices

Exempted operations: established orchards, date grove, vine crops, nurseries, range land,
and irrigated pasture

Producers that want a Rule 403 exemption must implement at least three of the following
eight conservation practices listed below.

1. C over Crop

Establish a cover crop that establishes a minimum of 60 percent ground cover on fields
that will remain fallow until the next crop planting. Vegetative growth to be managed, if
necessary, by mowing, grazing, approved chemicals or other means tha t maintain the

necessary cover. (Native or volunteer vegetation that meets the minimum ground cover
requirements also represents an acceptable cover crop).

2. Crop Residue Management

Maintain crop residues from previous crops that establishes a minimum o f 60 percent
ground cover on fields that will remain fallow until the next crop planting. Implements
such as undercutters or sweeps that sever roots and lift weeds without burying or
destroying much of the residue are most efficient for maintaining surfac e cover.

3. Surface Roughening

Conduct surface roughening by bedding, rough disking, or tillage that leaves the surface
covered with stable clods. Disc fallow fields in the early spring to get the winter weeds
before they mature seed and before it dries out so clods will be produced. List or bed up
in May to get early summer weeds before they seed and before it is too dry to bed.

4. Minimum Tillage

Utilize conservation tillage practices to manage the amount, orientation and distribution
of crop and ot her plant residues on the soil surface year

- round, while growing crops in
narrow slots or tilled strips. Your local Farm Bureau, NRCS, or Riverside County
Cooperative Extension, office can provide guidance on various minimum tillage

practices.Draft Rule 403 Coachella Valley Agricultural Handbook

( 6/17) April 2004 

## Section I I

2. Inactive Conservation Practices (Concluded)

Exempted operations: orchards, vine crops, nurseries, range land, and irrigated pasture

5. Cross Wind Stripcropping

Establish crops in strips established across the prevailing wind erosion direction and

arran ged so that strips susceptible to wind erosion are alternated with strips having a
protective cover that is resistant to wind erosion.

6. Field Windbreaks

Plant or maintain a single or multiple row of trees or shrubs adjacent to windward edge of

the fiel d as close to perpendicular as practical with the direction of erosive winds. Avoid
conflicts with any above or below ground utilities. Local Farm Bureau, Riverside

County Cooperative Extension, or NRCS office can provide technical assistance on

selectin g proper tree species, appropriate spacing, and maintenance requirements

.
7. Ridge Roughness

Establish ridges by normal tillage and planting equipment as close to perpendicular as
practical with the direction of erosive winds (not appropriate for unstable soils such as
sands or loamy sands). After establishment, ridges shall be maintained through those
periods when wind erosion is expected to occur, or until growing crops provide enough
cover to protect the soil from wind erosion.

8. Wind Barriers

Plant or maintain perennial or annual plants interspersed throughout a crop field as close
to perpendicular as practical with the direction of erosive winds. To be effective, the
selected plant(s) must create a stand at least three feet tall. Selection of pla nts for wind

barriers should favor species or varieties tolerant to herbicides used on adjacent crops.

Local Farm Bureau, Riverside County Cooperative Extension, RCD, or NRCS offices can

provide technical assistance on selecting proper tree species, appro priate spacing, and

maintenance requirements

.Draft Rule 403 Coachella Valley Agricultural Handbook

(7/17) April 2004 

## Section II

3. Farm Yard Area Conservation Practices

Farm yard areas refer to disturbed surfaces used by people or vehicles (e.g., equipment

storage yards) on at least eight calendar days per year.

Exempted operat ions: none

Producers that want a Rule 403 exemption must implement at least one of the four

conservation practices listed below.

1. Vegetation

Establish or maintain vegetation at sufficient density to prevent wind driven dust.

2. Dust Suppressants

Apply water or approved chemical stabilizers at a sufficient quantity and frequency to
prevent wind driven dust.

3. Surface Area Modification

Apply material with low silt content (i.e., asphalt, concrete, recycled road base, or gravel
to a minimum depth of four inches) at sufficient quantity and frequency to prevent wind

driven dust.

4. Disturbed Surface Area Reduction

Reduce farm yard area by at least 50 percent from the original disturbed surface area. To
qualify, the original disturbed surface area must be treated (e.g., vegetation, watering that
establishes a crust, chemical stabilization, etc.) to prevent wind driven dust.Draft Rule 403 Coachella Valley Agricultural Handbook

(8/17) April 2004 

## Section II

4. Track

- Out Conservation Practices

Exempted operations: none

Producers that want a Rule 403 exemption must implement at least one of the three
conservation practices listed below.

1. Track

- Out Area Improvements

Pave or apply chemical stabilization at sufficient concentration and frequency to maintain
a stabilized surface starting from the point of intersection with the public p aved surface,
and extending for a centerline distance of at least 100 feet with an acceptable width to
accommodate traffic ingress and egress from the site.

2. Track

- Out Prevention

Check or clean the undercarriage and wheels on haul trucks before leaving field or install

a track

- out control device to prevent the track

- out of soil onto paved public roads.

3. End of Row Equipment Turn Around Areas

Prohibit turning tractors and implements on paved public roads if soil will be dropped on
the road or clean pav ement after practices have ceased.

Note: the California Motor Vehicle Code (CVC) prohibits the depositing of soil on
highways and requires removal of such material. Text from CVC section 23112(b) and
23113(a) is included below.

CVC 23112(b)

No person shal l place, deposit, or dump, or cause to be placed, deposited, or
dumped, any rocks, refuse, garbage, or dirt in or upon any highway, including any
portion of the right

- of

- way thereof, without the consent of the state or local agency
having jurisdiction over the highway.

CVC 23113(a )

Any person who drops, dumps, deposits, or throws, or causes or permits to be
dropped, dumped, deposited, placed, or thrown, upon any highway or street any
material described in section 23112 ... shall immediately remove the materia l or

cause the material to be removedDraft Rule 403 Coachella Valley Agricultural Handbook

(9/17) April 2004 

## Section II

5. Unpaved Roads Conservation Practices

Exempted operations: none

Producers that want a Rule 403 exemption must implement the surface improvement
conservation practice when more than 25 vehicles per day will utilize the unpaved road
and at least one of the other conservation practices during all other times.

Surface Treatment (Mandatory)

Treat unpaved roads when more than 25 vehicles per day will use the road. Treatment
options include water, mulch, chemical dust suppressants or material with a low silt
content (i.e., asphalt, concrete, recycled road base, or gravel to a minimum depth of four
inches) such that visible dust emissions do not exceed 20 percent opacity. Unpaved farm
roads should be treated early enough so that mud will not stick to tires and be carried
onto paved public roads.

Producers that want a Rule 403 exemption must also implement at least one of the three
conservation practices listed below.

1. Speed Control

Control speed to 15 miles per hour (mph) on untreated unpaved roads through worker
notifications, signage, or any other necessary means.

2. Access Restriction

Restrict access to private unpaved roads currently used by the public either through
signage or physical access restrictions.

3. Unpaved Road Treatments

Treat unpaved roads with water, mulch, chemical dust suppressants, or low silt content
material (i.e., asphalt, concrete, recycled road base, or gravel to a minimum depth of four
inches) during heavy use periods.Draft Rule 403 Coachella Valley Agricultural Handbook

(10/18) April 2004 

## Section II

6. Storage Pile Conservation Practices

Exempted operations: none

Does not apply to storage of material with a low silt content (i.e., gravel)

Producers that want a Rule 403 exemption must implement at least one of the four
conservation practices listed below

.
1. Wind Sheltering

Enclose material in a three

- sided barrier equal to the height of the material. Open side of
the barrier should be oriented to the leeward (downwind) side of the material.

2. Watering

Apply water at a sufficient quantity and freque ncy to prevent wind driven dust.

3. Chemical Stabilization

Apply an approved dust suppressants at a sufficient quantity and frequency to prevent

wind driven dust. Best for use on storage piles subject to infrequent disturbances.

4. Covering

Install tarp s, plastic, or other material as a temporary cover. Coverings should be
anchored to prevent wind from removing the cover.Draft Rule 403 Coachella Valley Agricultural Handbook

(11/17) April 2004 

## Section III

Submittal Instructions for Alternative Conservation Practices

Producers can voluntarily implement alternative conservat ion practices that are more suitable to their specific farming operations. However, producers that elect to implement alternative conservation practices and want to qualify for the Rule 403 exemption must provide a description of the alternative conservat ion practices to the AQMD.

Producers that want to implement alternative conservation practices must notify the AQMD by December 1, 2004, or 30 days prior to starting a new farming operation. The notification must include a description of the alternative c onservation practice(s) that will be implemented on

- site.

After receipt of a notification, the AQMD will consult with the Natural Resources Conservation Service and the applicable Resource Conservation District to determine the appropriateness of the alter native conservation practice(s).

The AQMD will then notify the producer in writing if the alternative conservation practices are considered acceptable. Producers will be exempt from implementing conservation practices on the source category (e.g., active, inactive, unpaved roads, etc.) in which alternative conservation practices are proposed until the AQMD has notified said producer whether the alternative conservation practices are acceptable. If the alternative conservation practices are deemed unaccept able, the AQMD will notify the producer of such a determination and will establish a 30

- day grace period to identify acceptable alternative conservation practices. During this 30

- day grace period, the AQMD will work with the producer and the appropriate r esource agency personnel to identify acceptable alternative conservation practices.

Notifications can be mailed or delivered to:

Rule 403 Compliance South Coast Air Quality Management District 21865 East Copley Drive Diamond Bar, CA 91765

- 4182

Notificatio ns can also be submitted electronically to:

mlaybourn@aqmd.gov (909) 396

- 3066 (909) 396

- 3252Draft Rule 403 Coachella Valley Agricultural Handbook

(12/17) April 2004 

## Section IV

Submittal Instructions for Justification Statements

In the event that there are special technical (e.g., non

- economic) circumstances, including safety, which prevent implementation of the suggested minimum number of conservation practices within each category listed in Section II, a justification statement must be submitted in order for a producer to qualify for a Rule 403 exemption.

Producers that want to submit a justification statement must notify the AQMD by December 1, 2004, or 30 days prior to starting a new farming operation.

The justification statement must explain the reason(s) why the suggested minimu m number of conservation practices within a category can not be implemented on

- site. After receipt of a justification statement, the AQMD will consult with the Natural Resources Conservation Service and the applicable Resource Conservation District to

dete rmine the appropriateness of the information submitted.

The AQMD will then notify the producer in writing if the justification statement(s) are considered acceptable. Producers will be exempt from implementing conservation practices on the source category (e.g., active, inactive, unpaved roads, etc.) in which a justification statement is proposed until the AQMD has notified said producer whether the justification statement is acceptable. If the justification statement is deemed unacceptable, the AQMD will notify the producer of such a determination and will

establish a 30

- day grace period to identify any alternative conservation practices or other possible justification statements. During this 30

- day grace period, the AQMD will work with the producer and the appropriate resource agency personnel to identify alternative conservation practices or other possible justification statements.

Justification statements can be mailed or delivered to:

Rule 403 Compliance South Coast Air Quality Management District

218 65 East Copley Drive Diamond Bar, CA 91765

- 4182

Justification statements can also be submitted electronically to:

mlaybourn@aqmd.govDraft Rule 403 Coachella Valley Agricultural Handbook

(13/17) April 2004 

## Section V

Conservation Practice Self Monitoring Form

The following form has been prepared to assist producers in document ing implementation of the conservation practices. Producers are required to prepare and maintain this form at the farm offices to qualify for a Rule 403 exemption. This information must be provided to the AQMD Executive Officer upon request. One form

ca n be prepared and maintained for multiple farming operations provided that the conservation practices are the same at all sites.

A sample completed conservation practice self

- monitoring form is also provided following the blank form.Draft Rule 403 Coachella Valley Agricultural Handbook

(14/17) April 2004 

## Section V Farm Name: 

### Conservation Practice Self Monitoring Form 1
Producer Signature:

Date:

Active 2 Inactive 2 Farm Yard Area Track

- Out Unpaved Roads Storage Piles

√ Activity Modification
(Mandatory) (minimum of three) (minimum of one) (minimum of one) Surface treatment
on high use roads (minimum of one)

(minimum of one from

below) Cover Crop Vegetation Track

- Out Area

Improvements (Mandatory) Wind Sheltering

Soil Moisture Crop Residue Dust Suppressants Track

- Out Prevention (minimum of one) Watering

Irrigation System Surface Roughening Surface Area

Modification End of Row Turn

Around Areas Speed Control Chemical

Stabilization

Minimum Tillage Minimum Tillage D isturbed Surface

Area Reduction Alternative Practices Access Restriction Covering

Mulching Cross Wind
Stripcropping Alternative Practices Justification Unpaved Road

Treatments Alternative Practices

Alternative Practices Field Windbreaks Jus tification Surface Modification Justification

Justification Ridge Roughness Alternative Practices

Wind Barriers Justification

Alternative Practices

Justification

1 If you wish to choose different practices for different fields and/or farm areas, separate sheets must be filled out for each site.

2 The following operations are exempt from active and inactive land conservation practices: orchards, vine crops, nurseries, range land, and irrigated pasture.Draft Rule 403 Coachella Valley Agricultural Handbook

(15/17) April 2004 

## Section V Farm Name: AAAA Farms 

### Conservation Practice Self Monitoring Form 1
Producer Signature: John Smith

Date: 6/19/99

Active 2 Inactive 2 Farm Yard Area Track

- Out Unpaved Roads Storage Piles

√ Activity Modific ation
(Mandatory) (minimum of three) (minimum of one) (minimum of one) √ Surface treatment
on high use roads (minimum of one)

(minimum of one from

below) √ Cover Crop Vegetation √ Track

- Out Area

Improvements (Mandatory) Wind Sheltering

Soil Moisture Crop Residue Dust Suppressants Track

- Out Prevention (minimum of one) Watering

√ Irrigation System √ Surface Roughening Surface Area

Modification End of Row Turn

Around Areas √ Speed Control √ Chemical

Stabilization

Mini mum Tillage Minimum Tillage √ Disturbed Surface

Area Reduction Alternative Practices Access Restriction Covering

Mulching Cross Wind
Stripcropping Alternative Practices Justification Unpaved Road

Treatments Alternative Practices

Alternative Practices √ Field Windbreaks Justification Surface Modification Justification

Justification Ridge Roughness Alternative Practices

Wind Barriers Justification

Alternative Practices

Justification

1 If you wish to choose different practices for different fields and/or farm areas, separate sheets must be filled out for each site.

2 The following operations are exempt from active and inactive land conserva tion practices: orchards, vine crops, nurseries, range land, and irrigated pasture.Draft Rule 403 Coachella Valley Agricultural Handbook

(16/17) April 2 004 

## Se ction VI

Opting for Rule 403 General Provisions

AQMD in conjunction with local producers and staff from the Farm Bureau, NRCS, and RCDs have developed the conservation practices contained in this Handbook to be more appropriate for farming operations than the traditional dust control requirements for construction projects, landfills, and other dust sources.

Producers that do not voluntarily implement the conservation practices before January 1, 2005, or within 30 days of starting a farming operation at a ne w site would become subject to the general requirements contained in AQMD Rule 403. The following is a general summary of the Rule 403 requirements.

• visible emissions prohibited from crossing the site property line [Section (d)(1)]

• at least one best ava ilable control measure must be implemented for each source [Section (d)(2)]

• upwind/downwind PM10 differential prohibited from exceeding 50 μ g/m 3
[Section (d)(3)]

• all track

- out must be removed within one hour if material extends more than 25 feet

from a sit e [Section (d)(4)]

• sites with more than five acres of disturbed surfaces or those with more than 100 cubic yards of import or export must install a track

- out prevention device at each location where vehicles exit the site [Section (d)(5)]

Producers that wo uld like more information can obtain a copy of Rule 403 and the general Rule 403 Handbook, which details traditional best available control measures, by calling the AQMD at (909) 396

- 2000 or through the internet at:

www.aqmd.govDraft Rule 403 Coachella Valley Agricultural Handbook

(17/17) 2/17/04 

## Section VI

Failure to Compl y with Rule 403

The intent of the AQMD is to work with producers and local resource agencies (e.g., NRCS, RCDs, and Farm Bureaus, etc.) to reduce dust and the corresponding PM10 emissions from agricultural operations through the voluntary implementation of good conservation practices. These emission reductions are necessary as part of the region’s efforts to attain State and Federal air quality standards. Failure to achieve compliance with the State and Federal air quality standards by the mandated attain ment date could result in Federal action that would significantly impact our region.

After January 1, 2005, failure to meet Rule 403 requirements could subject the producer mandatory conservation class(es), required dust control plans, fines, or other pen alties.