CHAPTER 9 

CONTINGENCY MEASURES 

Introduction

Contingency Measures
Chapter 9 Contingency Measures 

9 - 1 

INTRODUCTION 

In order to achieve the improvement in air quality specified in the AQMP, the control 

measures listed in the Plan must be adopted and implemented within the timeframes set 

forth. In the event that implementation of the AQMP is not providing adequate progress 

and the interim emission reduction goals have not been met, the District must take action 

to bring forward measures that are scheduled for later adoption or implementation, or to 

implement certain "contingency" control measures. These contingency measures are 

control options that could be instituted in addition to the AQMP control measures. Both 

state and federal Clean Air Acts require that district plans include contingency measures. 

CONTINGENCY MEASURES 

The 2003 AQMP contains 3 contingency control measures. Although implementation of 

these measures is expected to reduce emissions, there are issues that limit the viability of 

these measures as AQMP control measures at this time. Issues surrounding these 

measures include, but are not limited to the availability of District resources to 

implement and enforce the measure, cost-effectiveness of the measure, potential adverse 

environmental impacts, potential economic impacts, effectiveness of emission 

reductions, and availability of methods to quantify emission reductions. Table 1 lists the 

contingency control measures and adoption/implementation issues associated with the 

measure. The responsibility to adopt and implement the measures falls on the District, 

CARB, and EPA. A complete discussion of the control measures is included in 

Appendix IV-A, Section 2; however a summary is provided in this chapter. 

TABLE 1 

Contingency Control Measures 

AQMP 

Measure 

Number 

Title Issues 

CTY-01 Accelerated Implementation of Control Measures Resource Availability 

CTY-04 Enhanced Oxygenated Fuel Content for CO Potential NOx Emission 

Increases 

CTY-14 Emission Reductions from Miscellaneous Sources (Weed 

Abatement) 

Unquantified Emission 

Reductions 
Final 2003 AQMP 

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CTY-01 – ACCELERATED IMPLEMENTATION OF CONTROL MEASURES: 

Under the 1990 Clean Air Act Amendment, EPA recommends “as a contingency 

measure the requirement that measures which would take place in later years if the area 

met its RFP target or attainment deadline, would take effect earlier if the area did not 

meet its RFP target or attainment deadline.” Thus, in the event the District or Air 

Resources Board determines that the District failed to either achieve interim emission 

reduction goals or maintain adequate progress towards attainment of ambient air quality 

standards, the District will accelerate the implementation schedule. This contingency 

control measure proposes to accelerate the starting implementation date for the 

stationary and mobile source control measures that have implementation dates on and 

after 2004. The proposed starting and revised starting implementation dates of the 

stationary and mobile source control measures affected by this contingency control 

measure are shown in Table 2. However, the revised dates are not deemed feasible at 

this time but will be pursued if contingency actions are required at a later date. 

TABLE 2 

Proposed Contingency Implementation Schedule for Stationary Source Control 

Measures with Starting Implementation Dates Post 2004 

CM 

Number 

Control Measure Title Adopt 

Date 

Starting 

Implementation Date 

End 

Implm. 

Date 

 2003 

AQMP 

Revised 

CTS-07 Further Emission Reductions from Architectural 

Coatings (Rule 1113) (VOC) 

2003 2006 2005 2008 

CTS-10 Miscellaneous Industrial Coatings & Solvent 

Operations (Regulation IV and XI) (VOC) 

Phase I 

Phase II 

Phase III 

2004 

2005 

2006 

2006 

2007 

2008 

2005 

2006 

2007 

2008 

2009 

2010 

FUG-05 Emission Reductions from Fugitive Emission Sources 

Phase III (VOC) 

2003 2005 2004 2008 

CMB-07 Emission Reductions from Petroleum Refinery Flares 

(All Pollutants) 

2004 2005 2004 2004 

CMB-10 Additional NOx Reductions for RECLAIM (NOx) 2004 2006 2005 2010 

BCM-07 Further PM10 Reductions from Fugitive Dust Sources 

(PM10) 

2004 2006 2005 2005 

BCM-08 Further Emission Reductions from Aggregate and 

Cement Plant Manufacturing Operations (PM10) 

2004 2006 2005 2005 

PRC-03 Emission Reductions from Restaurant Operations 

(PM10) 

2003 

2004 

2004 - 2010 2003 2010 
Chapter 9 Contingency Measures 

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TABLE 2 (Cont.) 

Proposed Contingency Implementation Schedule for Stationary Source Control 

Measures with Starting Implementation Dates Post 2004 

CM 

Number 

Control Measure Title Adopt 

Date 

Starting 

Implementation Date 

End 

Implm. 

Date 

 2003 

AQMP 

Revised 

PRC-07 Industrial Process Operations (VOC) 

Phase I 

Phase II 

2004 

2005 

2006 

2008 

2005 

2006 

2007 

2010 

MSC-05 Truck Stop Electrification (All Pollutants) 2005 2007 2005 2007 

MSC-06 Emission Reductions from Wood-Burning Fireplaces 

& Wood Stoves (PM10) 

2005 2006 2005 2005 

MSC-07 Natural Gas Fuel Specifications (NOx) 2005 2007 2006 2010 

FSS-05 Mitigation Fee Program for Federal sources (All) 2005 2010 2008 2010 

FSS-06 Further Emission Reductions from In-Use Off-Road 

Mobile Vehicles and Equipment (All) 

2005 2007 2006 2010 

FSS-07 Emission Fee Program for Port-Related Mobile 

Sources (All) 

2006 2008 2007 2010 

CTY-04 – ENHANCED OXYGENATED FUELS CONTENT: This contingency 

control measure proposes to increase the oxygen content of gasoline sold in the Basin 

during winter months. The oxygen content would be as high as necessary to offset one 

years worth of emissions growth associated with increased vehicle miles traveled 

(VMT). To ensure that implementation of this contingency control measure does not 

result in significant increases in NOx emissions, measures can be taken such as avoiding 

specific types of oxygenates. 

CTY-14 – CONTROL OF EMISSIONS FROM MISCELLANEOUS SOURCES: 

This contingency control measure proposes future regulations to require mowing or 

cutting for weed abatement. Such a requirement would likely be implemented through 

clarifications and/or additional requirements through Rule 403 –Fugitive Dust. 

Additional controls could include provisions to limit weed abatement to the early 

morning hours (winds are typically lower in the morning), lower vehicle speeds or, in 

instances when mowing is not feasible, require pre-treatment of the site with a watering 

truck.