CALIFORNIA AIR RESOURCES BOARD



### APCD/AQMD RULE EVALUATION FORM -- Page 1

(Electronic Format)

I. GENERAL INFORMATION

District: South Coast Air Quality Management Distr ict

Rule No(s): 2449 Date adopted/Amended/Rescinded: May 2, 2008

Rule Title(s): Control Of Oxides of Nitrogen Emiss ions from Off-Road Diesel Vehicles

Date Submitted to ARB: May 9, 2008

If an Amended Rule, Date Last Amended (or Adopted):

Is the Rule Intended to be Sent to the U.S. EPA as a SIP Revision? Yes No ( If No, do not complete remainder of form)

District Contact: Henry Hogo Phone Number: (909) 396-3184 E-mail Address: hhogo@aqmd.gov

Narrative Summary of New Rule or Rule Changes: New Rule Amended Rule

Rule 2449, Control Of Oxides of Nitrogen Emissions from Off-Road Diesel Vehicles. Rule 2449 adopts by

reference and implements the Surplus Off-Road Opt-I n for NOx (SOON) provision of the CARB’s “In-Use Of fRoad Diesel Vehicle” Regulation under Title 13 of t he California Code of Regulations, Section 2449.3. The

SCAQMD Governing Board formally opted-in to the Sta te SOON Program on May 2, 2008. Rule 2449 will ach ieve

surplus NOx reductions beyond those required under CARB’s In-Use Off-Road Diesel Vehicle Regulation, a dopted

in July 2007, through incentive funding provided by AQMD. The rule applies to fleets with more than 2 0,000 hp in

maximum power on a statewide basis with more than 4 0% Tier 0 and 1 equipment as of January 1, 2008. F leet

operators subject to this regulation are required t o meet the more striingent SOON NOx targets or appl y for

incentive funding for suffiecient number of project s (e.g., repowers, purchases, replacements) to meet these

targets. Fleet operators are required to submit a complinace plan along with their funding applicatio ns to

demonstrate that equipment identified for SOON fund ing will result in surplus reductions in order to q ualify for

incentive funding. Once a fleet operator receives funding for a qualified project, the fleet operator is required to

implement the project.

Pollutant(s) Regulated by the Rule (Check): ROG (NOx) SO2

(CO) PM TAC (name):

II. EFFECT ON EMISSIONS

Complete this section ONLY for rules that, when imp lemented, will result in quantifiable changes in em issions. Attach reference(s) for emission

factor(s) and other information. Attach calculatio n sheet showing how the emission information provid ed below was determined

.

Net Effect on Emissions: Increase Decrease N/A

Emission Reduction Commitment in SIP for this Sourc e Category: 12 tons per day NOx, 1 ton per day of ROG, and 0.5

ton per day of PM2.5 by 2014

Inventory Year Used to Calculate Changes in Emissio ns: 2014 Area Affected: SCAQMD

Future Year Control Profile Estimate (Provide information on as many years as possible) : An estimated 100 to 150 fleets (or 1,000 to 1,300 o ff-road diesel equipment) are affected by Rule 2449 based on an

anticipated $120 million level of funding over the next four years. The overall perecent reductions a re approximately

14.5% for NOx, 10.5% for ROG and 21.7% for PM2.5 in 2014.CALIFORNIA AIR RESOURCES BOARD



### APCD/AQMD RULE EVALUATION FORM -- Page 2

(Electronic Format)

Baseline Inventory in the SIP for the Control Measu re: 2002 Baseline Inventory: 158.9 tons per day of NOx, 23.5 tons per

day of ROG, and 9 tons per day of PM2.5; 2014 Basel ine Inventory: 82.7 tons per day of NOx, 9.5 tons p er day of ROG,

and 2.3 tons per day of PM2.5 (i.e., remaining emis sions after implementation of the State In-Use Off- Road Diesel Vehicle

Regulation).

Emissions Reduction Commitment in the SIP for the C ontrol Measure: 12 tons per day of NOx, 1 ton per day of ROG, and

0.5 ton per day of PM2.5.

Revised Baseline Inventory (if any):

Revised Emission Reduction Estimate (if developed):

Note that the district’s input to the Rule Evaluati on Form will not be used as input to the ARB’s emis sion forecasting and

planning.

III. SOURCES/ATTAINMENT STATUS

District is: Attainment Nonattainment Split

Approximate Total Number of Small (<100 TPY) Source s Affected by this Amendment:

Percent in Nonattainment Area: %

Number of Large (> 100 TPY) Sources Controlled: Percent in Nonattainment Area: %

Name(s) and Location(s) (city and county) of Large (> 100 TPY) Sources Controlled by Rule (Attach additional sheets as

necessary) :

IV. EMISSION REDUCTION TECHNOLOGY

Does the Rule Include Emission Limits that are Cont inuous? Yes No

If Yes, Those Limits are in Section(s) of the Rule.

Other Methods in the Rule for Achieving Emission Re ductions are:

V. OTHER REQUIREMENTS

The Rule Contains:

Emission Limits in Section(s): 2449.3 (d)(1)(C) Work Practice Standards in Section(s):

Recordkeeping Requirements in Section(s): Reporting Requirements in Section(s): 2449.3 (d) (1)(A) and (e)(3)CALIFORNIA AIR RESOURCES BOARD



### APCD/AQMD RULE EVALUATION FORM -- Page 3

(Electronic Format)

5/1/2002 3

VI. IMPACT ON AIR QUALITY PLAN

No Impact Impacts RFP Impacts attainment

Discussion: Rule 2449 is expected to result in sub stantial emissions reductions which are critical fo r achieving the state

and federal RFP requirements, attainmemnt of the fe deral annual ambient air quality standard for PM2.5 by 2014,.and

making progress toward attainment of the 8-hour ozo ne standard by 2023.