CALIFORNIA AIR RESOURCES BOARD 

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I. GENERAL INFORMATION District: South CoastAQMD Rule No: 1610 DateAmended: May 9. 1997 RuleTitle: Old-Vehicle Scrapping Date Submitted toARB: May 16. 1997 Ifan Amended Rule, Dated Adopted: January8. 1993 Isthe Rule Intendedto be Senttothe U.S. EPA as a SIP Revision (X) Yes 

### ( ) No If No, don~compIetere~j,~roff~ District Contact: Henry Hogo Phone Number: (909) 396-3184 Narrative Summary ofNew Rule or Rule Changes: 

### ( ) New Rule (X) Amended Rule The following summarizes essential changes. Subdivision (i) was modified to address potential impacts and/or violations of criteria pollutant air quality standards, where Mobile Source Emission Reduction Credits (MSERCs) are used as an alternative method of compliance with Regulation Xl ruleswith future compliance dates, aswell asother District rulesthat allowthe use ofcredits as permitted in subparagraph (i)(1)(F). These modifications add language specifying the following requirementsforuse of MSERCs. 1. Paragraph(i)(3): an entity shall demonstrate to the Executive Officerthat emissions at the entity’s facility are not subject to Risk Reduction Requirements or the use of MSERCs will not result in adverse change in attainment ofrisk redUction requirements under Rule 1402. 2. Subparagraph (i)(4)(A): establish that the use of MSERCs does not result in NOx emissions greaterthan or equal to 200 pounds perdayfrom those portable internal combustion engines as defined in paragraph (a)(5) of Rule 1110.2, or NOx emissions from those portable internal combustion engines will not cause an exceedance ofthe state nitrogen dioxide ambient airqualitystandard. 3. Clause (i)(4)(B)(i): demonstrate that the use of MSERCs will not result in causing an increase or forgoing a reduction in carcinogenic health risk greater than I x i0~ or Hazard Index greater than I for all substances listed in Rule 1402, and the assessment in health risk shall be conducted in accordancewith guidance used in implementing Rules 1401 and 1402. 4. Clause (i)(4)(B)(ii): demonstrate thatthe use of MSERCswill not result in a facility-wide Significant Risk Level in accordancewith Rule 1402 paragraph (d)(11). 5. Clause (i)(4)(B)(iii): demonstrate that the use of MSERCswill not cause a significant increase in an airquality concentration asdetermined in Rule 1303. Paragraph (i)(5) was added to clarifythe implementation date forthe foregoing revisions in subdivision (I). Specifically, it requires that compliance plans currently being implemented (as of May 9, 1997) shall demonstrate compliance with paragraphs (i)(3) and (i)(4) when their next plan is due orwithin six months ofdate ofadoption, whicheveroccursfirst. Pollutant(s) Regulated bythe Rule (Circle): (RQG) (~~O~) SO2 (CO) (PM) TAC(name):

_______________________ IL EFFECT ON EMISSIONS Completethis section ONLYfor rulesthat, when implemented, will result in quantifiable changes in emissions. Attach reference(s) foremission factor(s) and other information. Attach calculation sheet showing howthe emission information provided belowwas determined. Net Effect on Emissions: 

### ( ) Increase 

### ( ) Decrease (X) N/A Emission Reduction Commitment in SIP forthis Source Category: tons/yearCALIFORNIA AIR RESOURCES BOARD 

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### AQMD RULE EVALUATION FORM

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SSC/CES Code Affected: If a SCC Code isAssigned, SIC CodeAffected:________________ (NOTE: It morethan one SSC orCES codeor morethan one combination ofSCC and SIC codesare needed, lilt outthe following information on a separateform foreach combination ofcodes.) InventoryYear Used to Calculate Changes in Emissions:____________________Area Affected:________________ Future YearControl Profile Estimate (Provide information on as manyyears as possible) Tons/Year Baseline Reductions Tons/Year Control Percent Control Control Year (Increases) Subiectto Rule Level Control Level Factor

____ / = x 100 = _% 1.00-

— =

—

____ / = x 100 = % 1.00-

— =

—
III. SOURCES!ATTAINMENT STATUS District is: 

### ( ) Attainment (X) Nonattainment 

### ( ) Split ApproximateTotal Number of Small (<100 TPY) Sources Controlled by Rule: N/A Percent in NonattainmentArea: % Numberof Large (~TPY) Sources Controlled: N/A Percent in NonattainmentArea: % 

# O Name(s) and Location(s) (city and county) of Large (~ 100 TPY) Sources Controlled by Rule (Attach additional sheets as necessary): The rule provides an alternative method of compliance for stationary and indirect emission sources subject to District regulations

— including RECLAIM, Regulation Xl rules with future compliance dates, Regulation XX rules which allow the use of credits, and Regulation XIII (New Source Reviewoffsets).

IV. EMISSION REDUCTION TECHNOLOGY Doesthe Rule Include Emission Limitsthat are Continuous? 

### ( ) Yes (X) No IfYes, Those Limits are in Section(s)________________________ ofthe Rule. Other Methods in the Rule forAchieving Emission Reductions are:
V. OTHER REQUIREMENTS The Rule Contains: Emission Limits in Section(s): N/A Work Practice Standards in Sections: (c). (d). (e). (f). and (ci) Recordkeeping Requirements in Section: (i) Reporting Requirements in Sections: (k). and (I) Attach a Completed EPA SIP Approvability Checklist

- Enforceability or Provide an Equivalent Compliance/Enforcement Strategy Statement.

VI. IMPACT ON AIR QUALITY PLAN (X) No Impact 

### ( ) Impacts RFP 

### ( ) Impacts attainment Discussion:

___________________________________________________ (ARBFORM

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