### UNITED STATES ENVIRONMENTAL PROTECTION AGENCY NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2000 TRAVERWOOD DRIVE ANN ARBOR, MI 48105

- 2498

OFFICE OF AIR AND RADIATION


### July 2 8 , 2015

MEMORANDUM

SUBJECT: Preamble and Regulation Refer ences for Key Trailer Provisions

FROM: Tad Wysor , Assessment and Standards Division, Office of Transportation and Air Quality

TO: Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium

- and Heavy

- Duty Engines and Vehicles

- Phase 2

- Docket EPA

- HQ

- OAR

- 2014

- 0827

EPA created two versions of a reference guide for key trailer provisions in the preamble and regulations. The first version (dated July 1, 2015) referenced page numbers from the preamble that was available on EPA’s website prior to publicat ion in the Federal Register. This version was shared with the Truck Trailer Manufacturers Association (TTMA) during our meeting on July 9, 2015. The second version of the guide (dated July 17, 2015) referenced preamble page numbers from the Federal Register, and was shared wi th TTMA during our meeting on July 22, 2015.

Attachment: Preamble and Regulation References for Key Trailer Provisions, 7/1/15 version Preamble and Regulation References for Key Trailer Provisions, 7/17 /15 version

## Preamble and Regulation References for Key Proposed Trailer Provisions , HD Phase 2 NPRM (as of 7/1/15)

Overall Organization of the Trailer Provisions

 Preamble : We expect that discussions of the proposed provisions of most interest to trailer manufacturers will be in Section IV of the preamble ( P. 253

- 323 of the pre

- publication version available on EPA’s website )

.

 Regulations : The regulatory language for the trailer program also applies in many cases to other heavy

- duty segments and is distrib uted among the regulatory provisions, mostly in 40 CFR 1037

.

 Regulatory Impact Analysis : Analyses supporting the proposed provisions are described in some detail in the preamble; more details of our analyses for the trailer program (including EPA’s test r esults used to create the proposed aerodynamic performance bins, and the process deriving the GEM

- based equation proposed for certification) are in Chapter 2.10
, p. 2

- 152 to 2

- 190 of the RIA

.
Preamble Regulations Proposed Trailer Standards and Phase

- In IV.C, p. 259

- 269

Trailer Definition IV, p. 253 §1037.801 Covered Trailer Categories IV.C, p. 261 §1037.230(a)(3) Excluded Trailers IV.C.5, p. 266 § 1037.5 (g) Proposed Trailer Standards and Phase

- In

o Box trailer standards (full

- aero) IV.C.2, Table IV

- 2, p. 263 §1037.107(a)

o Partial

- aero box trailer and non

- aero standards IV.C.5, p. 267 §1037.107(a)

o Non

- box trailer standards IV.C.2, p. 263 §1037.107(a) Proposed Compliance Provisions IV.F, p. 302

- 323 Subpart C Basic Compliance process IV.F.2, p. 303

- 305 §1037.201

o Establishing trailer families/subcategories p. 304 § 1037.230(a)(3)

o Information needed for certification application p. 305 §1037.205

o End of year reporting p. 305 §1037.250 Use of the compliance equation IV.F.1, p. 302; IV.F.4, p. 313 §1037.515

o What inputs would be needed? IV.F.4, p. 313 §1037.515(a)

o Acceptable data sources

 Tire Rolling Resistance Testing IV.F.3.a., p. 306 §1037.515(b)

 Trailer Aerodynamic Testing (policy) IV.F.3.b, p. 307 §1037.515(c)
, §1037.525(a)

 Trailer Aerodynamic Testing (methods) §1037.527

- 533

 Demonstrating weigh t reduction IV.F.4, p. 313 §1037.515(d)

 Data from pre

- approved technologies IV.F.3.b. iv
, p. 312 §1037.211(b), (c)

 SmartWay

- verified technologies IV.F.6.b, p 321 §1037.150(n) Proposed optional averaging provisions IV.F.6.a, p 317 § 1037. 107(a)(5), Subpart H except §1037. 71 5 & 720

o See also the hypothetical examples in the docket memo: “2015

- 04

- 14_MemoToDocket_TrailerComplianceScenarios.pdf”. Attached; will also be available in docket: EPA

HQ

- OAR

- 2014

- 0827 Small Business Manufacturers

o Small Manufacturer definition §1037.801

o Small Business Flexibilities IV.F.6.d, p. 322 §1037.150(c) Other compliance provisions IV.F.5, p. 314

- 17

o Significance of trailer “useful life” IV.F.5, p. 314 §1037.107(c)

o Trailer labeling provisions IV.F.5, p. 315 §1037.135 Appendix III

o Emission

- related warranty provisions IV.F.5, p. 315 §1037.120

o Maintenance provisions (owners manual) IV.F.5, p. 316 §103 7

. 125 (h)

o Modifying emission control equipment after the “useful life” IV.F.5, p. 317 §1037.655

## Preamble and Regulation References for Key Proposed Trailer Provisions , HD Phase 2 NPRM (Revised 7

- 17

- 2015)

Overall Organization of the Trailer Provisions

 Preamble : We expect that discussions of the proposed provisions of most interest to trailer manufacturers will be in Section IV of the preamble ( P. 40253

- 40285 of the Federal Register, also available on EPA’s website )

.

 Regulations : The regulatory language for the trailer program also applies in many cases to other heavy

- duty segments and is dist ributed among the regulatory provisions, mostly in 40 CFR 1037

.

 Regulatory Impact Analysis : Analyses supporting the proposed provisions are described in some detail in the preamble; more details of our analyses for the trailer program (including EPA’s tes t results used to create the proposed aerodynamic performance bins, and the process deriving the GEM

- based equation proposed for certification) are in Chapter 2.10
, p. 2

- 152 to 2

- 190 of the RIA , also available on the EPA website)

.
Preamble Regulations Proposed Trailer Standards and Phase

- In IV.C, p. 40255

- 26 0

Trailer Definition IV, p. 40253 §1037.801 Covered Trailer Categories IV.C, p. 40256 §1037.230(a)(3) Excluded Trailers IV.C.5, p. 40259 § 1037.5 (g) Proposed Trailer Standards and Phase

- In

o Box trailer standards (full

- aero) IV.C.2, Table IV

- 2, p. 40257 §1037.107(a)

o Partial

- aero box trailer and non

- aero standards IV.C.5, p. 40259 §1037.107(a)

o Non

- box trailer standards IV.C.2, p. 40257

- 8 §1037.107(a) Proposed Compliance Provisions IV.F, p. 40276

- 85 Subpart C Basic Compliance process IV.F.2, p. 40276

- 7 §1037.201

o Establishing trailer families/subcategories p. 40277 § 1037.230(a)(3)

o Information needed for certification application p. 40277 §1037.205

o End of year reporting p. 40277 §1037.250 Use of the compliance equation IV.F.1, p. 40276 ; IV.F.4, p. 40281 §1037.515

o What inputs would be needed? IV.F.4, p. 40281 §1037.515(a)

o Acceptable data sources

 Tire Rolling Resistance Testing IV.F.3.a., p. 40278 §1037.515(b)

 Trailer Aerodynamic Testing (policy) IV.F.3.b, p. 40278 §1037.515(c)
, §1037.525(a)

 Trailer Aerodynamic Testing (methods) §1037.527

- 533

 Demonstrating weigh t reduction IV.F.4, p. 40281 §1037.515(d)

 Data from pre

- approved technologies IV.F.3.b. iv , p. 40280 §1037.211(b), (c)

 SmartWay

- verified technologies IV.F.6.b, p 40284 §1037.150(n) Proposed optional averaging provisions IV.F.6.a, p 40283 § 1037. 107(a)(5), Subpart H except §1037. 71 5 & 720

o See also the hypothetical examples in the docket memo: “2015

- 04

- 14_MemoToDocket_TrailerComplianceScenarios.pdf”. Attached; will also be available in docket: EPA

- HQ

OAR

- 2014

- 0827 Small Business Manufacturers

o Small Manufacturer definition §1037.801

o Small Business Flexibilities IV.F.6.d, p. 40285 §1037.150(c) Other compliance provisions IV.F.5, p. 40281

- 82

o Significance of trailer “useful life” IV.F.5, p. 40281

- 82 §1037.107(c)

o Trailer labeling provisions IV.F.5, p. 40282 §1037.135 Appendix III

o Emission

- related warranty provisions IV.F.5, p. 40282 §1037.120

o Maintenance provisions (owners manual) IV.F.5, p. 40282 §103 7

. 125 (h)

o Modifying emission control equipment after the “useful life” IV.F.5, p. 317 §1037.655