Document ID: EPA-R02-OAR-2011-0686-0004
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2011-09-19T04:00Z

The State of New Jersey

Department of Environmental Protection

Proposed Revisions to the Enhanced Inspection and Maintenance (I/M)
Program for the State of New Jersey

Proposed I/M Program Modeling and Revised Performance Standard Modeling 

SIP Revision

Appendix I

 History of New Jersey’s I/M SIP

AugustApril, 2009

History of New Jersey’s I/M SIP  tc  \l 1 "II.	History of New Jersey's
I/M SIP" 

	A.	Basic I/M SIP 

In 1974, New Jersey, under commitments made in its basic I/M SIP,
implemented its basic I/M program.  At that time, the State’s basic
I/M SIP consisted of an annual inspection program whereby all
gasoline-fueled motor vehicles, unless specifically exempt through law
or regulation, were subject to an idle exhaust emission test.  Although
several subsequent revisions were made to the State’s basic I/M SIP,
the core program remained unchanged.  Major changes in the State’s
basic I/M program over time included: 1) the addition of a visual
inspection for the presence of a catalytic converter, 2) the addition of
an inlet restrictor test to determine whether a vehicle’s fuel inlet
was sufficiently narrow as to preclude use of a leaded gasoline nozzle,
thereby preventing the use of leaded fuel, and 3) modification of the
program network design to allow for private inspection facilities
(PIFs).  This third major change expanded the inspection facility
network to include non-state-operated inspection facilities that could
do both inspections and repairs.  Although these private facilities were
originally only allowed to perform re-inspections, their
responsibilities were later augmented to include initial inspections as
well.

	B.	Enhanced I/M SIP   tc "	B.	Enhanced I/M SIP  " \l 2 

The Clean Air Act Amendments of 1990 require the implementation of
enhanced I/M programs for areas meeting one or more of the following
criteria:

Designated as a serious, severe or extreme ozone non-attainment area
with urbanized populations of 200,000 or more ;

Designated as a carbon monoxide non-attainment area that exceeded a 12.7
ppm design value with urbanized populations of 200,000 or more; or,

Part of a Metropolitan Statistical Area with a population of 100,000 or
more in the northeast Ozone Transport Region (OTR) .

New Jersey met all three of these criteria for required implementation
of an enhanced I/M program.  As part of this requirement, Congress
established performance specifications that were further elucidated by
the USEPA.  Specifically, the USEPA’s promulgated rules and
established guidance, including a performance standard and program
administration features, for the implementation of enhanced I/M
programs.  The USEPA’s final rule on Inspection/Maintenance Program
Requirements was promulgated on November 5, 1992.  Subsequently, on June
29, 1995, New Jersey submitted a SIP to the USEPA that described its
enhanced I/M program design.  This SIP described an inspection program
whereby all 1968 and newer gasoline-fueled motor vehicles, unless
specifically exempt through law or regulation, would be subject to a
steady-state dynamometer-based exhaust emission test known as the
ASM5015.  In addition, all 1975 and newer vehicles would receive
evaporative pressure and purge tests designed to detect any malfunctions
with the vehicle’s evaporative emission control system.  All pre-1968
vehicles would continue to be subject to the idle exhaust emission test.
 New Jersey’s enhanced I/M SIP also accounted for a hybrid (i.e., both
centralized, test-only and decentralized, test-and-repair facilities)
inspection network, similar to the one established for New Jersey’s
basic I/M program.  This SIP stated that once the enhanced I/M program
was fully implemented, all subject motor vehicles would be inspected at
least once every two years (i.e., biennially).

	C.	Enhanced I/M SIP Revision - March 27, 1996   tc "	C.	Enhanced I/M
SIP RevisionC.	Enhanced I/M SIP Revision - March 27, 1996  " \l 2 

On March 27, 1996, New Jersey submitted a revision to its June 29, 1995
enhanced I/M SIP, modifying its enhanced I/M program design to take
advantage of the additional flexibility afforded states by Congress in
designing their enhanced I/M programs.  Specifically, the National
Highway System Designation Act of 1995, P.L. 104-59 [S.440], (NHSDA)
prohibited the USEPA from automatically discounting decentralized
program formats by 50 percent, as had previously been prescribed in the
USEPA’s final rule on I/M program requirements.  Rather, the NHSDA
allowed states to claim any reasonable amount of credit for their
decentralized programs that they deemed appropriate, so long as 18
months from the approval of their enhanced I/M SIP the state could show
six months of full implementation enhanced I/M program data
substantiating their credit claim.  Consistent therewith, as part of its
March 27, 1996 enhanced I/M SIP revision, New Jersey claimed 80 percent
credit for the decentralized portion of its enhanced I/M program.  Refer
to Section F. for more information on New Jersey’s analyses to
substantiate its 80 percent credit claim.

In addition to taking advantage of the flexibility afforded by the
NHSDA, the March 27, 1996 enhanced I/M SIP revision modified the model
year coverage of the ASM5015 exhaust emission test and evaporative
system pressure and purge tests to the following: all 1981 and newer
light-duty vehicles, other than low annual mileage and full-time
four-wheel drive vehicles, would be subject to the steady-state
dynamometer-based ASM5015 exhaust emission test, as well as evaporative
system pressure and purge tests.  Vehicles 1980 and older would continue
to be subject to the basic idle exhaust emission test, as well as a
gasoline cap pressure test for those vehicles with sealed gas cap
systems.

Finally, as part of this March 27, 1996 revision to the State’s
enhanced I/M SIP, the test frequency of the State’s current inspection
process was slightly modified in connection with an enhanced
demonstration phase.  During this demonstration phase, vehicles that
successfully passed a voluntary enhanced exhaust emission test would
receive an inspection sticker valid for two years.  

On May 14, 1997, the USEPA granted conditional interim approval to New
Jersey’s enhanced I/M SIP.  This conditional interim SIP approval,
which became effective on June 13, 1997, addressed both the State’s
original June 29, 1995 enhanced I/M SIP submittal and its subsequent
March 27, 1996 SIP revision.  New Jersey subsequently satisfied the
conditions of this approval by rectifying the two major deficiencies in
its enhanced I/M SIP identified by the USEPA (New Jersey cured the first
major enhanced I/M SIP deficiency by providing final and complete test
equipment specifications, test procedures and emission standards to the
USEPA by January 31, 1997; and cured the second major enhanced I/M SIP
deficiency by providing enhanced I/M performance standard modeling to
the USEPA by February 1, 1998).  In addition, on December 14, 1998, New
Jersey cured the eight (8) de minimis deficiencies identified by the
USEPA, even though the satisfaction of those de minimis deficiencies had
no effect on the USEPA’s interim approval.

	D.	Enhanced I/M SIP Revision - June 5, 1998  tc "	D.	Enhanced I/M SIP
Revision - June 5, 1998 " \l 2 D.	Enhanced I/M SIP Revision - June 5,
1998

On June 5, 1998, New Jersey submitted a revision to its I/M SIP,
clarifying the testing frequency during the transition between the basic
I/M program and the full implementation of the enhanced I/M program. 
Although the previous SIP revisions clearly define the testing frequency
of both New Jersey’s basic and enhanced I/M programs, they did not
definitively specify the testing frequency during the transition period
between the two programs.

As part of the June 5, 1998 SIP revision, the State determined that
during the transition period, the basic I/M program would continue to
operate, but on a biennial, rather than annual, test frequency.  This
was done to accommodate the decreased availability of centralized
inspection lanes while they were being retrofitted for enhanced testing.
 To make this modification to the basic I/M program’s test frequency,
this SIP revision quantified the emission reduction losses anticipated
from this modification and provided an equivalency demonstration showing
the State’s plan to offset those losses in emission reduction benefit.
 Specifically, to compensate for the loss in VOC emission reduction
benefit from modifying the basic I/M program’s test frequency, New
Jersey: 1) began administering fuel cap pressure tests as part of its
basic I/M program in its centralized inspection facilities, and 2) began
fuel cap/evaporative emission control system visual inspections as part
of its basic I/M program in its decentralized inspection facilities. 
The loss in carbon monoxide emission reduction benefit from modifying
the basic I/M program’s test frequency was offset by taking credit for
emission reduction benefits gained through vehicle fleet turnover which
had not already been claimed by the State in its carbon monoxide SIP. 
Vehicle fleet turnover results when newer vehicles with more advanced
emission controls replace older, less advanced vehicles within the State
vehicle population.  The State submitted modeling analyses showing that
both of the above strategies more than compensated for the loss in VOC
and carbon monoxide emission reduction benefits from modifying the basic
I/M program’s test frequency.  The USEPA approved the State’s June
5, 1998 revision to its enhanced I/M SIP on August 26, 1998.

E.	Proposed Enhanced I/M SIP Revision - June 9, 2001  tc "	E.	Proposed
Enhanced I/M SIP Revision - June 9, 2001   " \l 2 

On June 9, 2001, the State proposed to revise its enhanced I/M SIP to
include amendments to the NJMVC’s rules governing the implementation
and operation of the State’s I/M program.  The proposed rulemaking
made the following changes to the NJMVC’s I/M regulations that could
impact the air quality benefits associated with the enhanced I/M
program, and therefore impact the SIP:

Provide that if leasing companies and out-of-state new motor vehicle
dealerships inspect a new motor vehicle’s safety and emission control
devices to insure that they conform to the specifications established by
the manufacturer and contained in the pre-delivery checklist, those
facilities could issue a temporary inspection decal.  This decal allows
the motorist to present the vehicle at the exit end of any CIF and be
issued a two-year inspection decal.  This regulatory change gives these
leasing companies and out-of-state new motor vehicle dealerships
equivalent privileges to those previously given to in-state new motor
vehicle dealerships;

Exempt gasoline-fueled school buses which are subject to inspection by
the NJMVC’s School Bus Inspection Unit from the inspection
requirements of the enhanced I/M program;

Allow any motor vehicle that passes an on-road inspection within the
two-month period prior to its regularly scheduled biennial inspection to
use the on-road inspection result in lieu of the complete biennial
inspection, so long as the tests performed on-road are the same tests
that would be performed on the vehicle as part of the biennial
inspection process;

Exempt from dynamometer testing any motor vehicle “ with a chassis
height that has been modified so as to make its operation on a
dynamometer either impractical or hazardous, as will be determined in
the discretion of the Director [of the NJMVC]”; and, 

Change the minimum cost expenditure value needed for the issuance of a
cost waiver from $200 to $450 as of January 1, 2002.

A hearing on this proposed SIP revision, as well as the NJMVC’s
proposed rulemaking, was held on July 9, 2001.  The NJMVC subsequently
adopted its regulations on October 15, 2001.  

	

	F.	Enhanced I/M SIP Revision - August 31, 2001  tc "	F.	Enhanced I/M
SIP Revision - August 31, 2001 " \l 2 

On December 13, 2000, in compliance with its NHSDA credit claim, New
Jersey submitted to the USEPA a qualitative analysis of four months of
data showing the effectiveness of the decentralized portion of its
enhanced I/M program relative to its centralized test-only network. 
Subsequently, on May 4, 2001, New Jersey proposed its final report for
NHSDA compliance, which evaluated six full months of program
implementation data (the period from July 1, 2000 through December 31,
2000) using various analysis methodologies.  On August 31, 2001, the
State of New Jersey submitted to the USEPA a revision to its enhanced
I/M SIP that included: 

1)	The State’s final submittal for compliance with the National
Highway Systems Designation Act (NHSDA); and, 

A revision to New Jersey’s enhanced I/M performance standard modeling.

The first part of this SIP revision included New Jersey’s final NHSDA
report.  This report was designed to support the claim New Jersey made
in its March 27, 1996 enhanced I/M SIP revision that its decentralized
network (the private inspection facilities, or PIFs) is at least 80
percent as effective as its centralized network (the centralized
inspection facilities, or CIFs).  The NHSDA report showed that both New
Jersey’s centralized test-only and decentralized test-and-repair
program networks are effectively identifying vehicles with unacceptably
high levels of emissions, and that the State-registered Emission Repair
Facilities (ERFs) are significantly reducing vehicle emissions through
effective repairs.  Specifically, the NHSDA analyses show overall
emission reductions of 55 percent for hydrocarbons (HC), 58 percent for
nitrogen oxide (NO) and 84 percent for carbon monoxide from the vehicles
repaired and successfully passing re-inspections following initial
inspection failures.  These analyses show relatively uniform emission
reductions attributable to both network types of New Jersey’s enhanced
I/M program, indicating that the emission reductions attributable to the
PIFs are at least 80 percent of those attributed to the CIF network.  In
fact, the analyses show that the State was conservative in this original
credit estimation.

The second part of the August 20, 2001 enhanced I/M SIP revision
addressed the State’s performance standard modeling for its enhanced
I/M program.  The State originally submitted its performance standard
modeling to the USEPA on January 30, 1998, to satisfy a condition of the
USEPA’s conditional interim approval of New Jersey’s enhanced I/M
program SIP.  At that time, the State had not yet implemented its
enhanced I/M program, requiring the NJDEP to make certain assumptions
about the program, such as the expected date for the implementation of
final standards.  After the State successfully implemented its enhanced
I/M program, the USEPA requested that the State update its performance
standard modeling to more accurately reflect the program as implemented.
The August 20, 2001 revised performance standard modeling demonstrated
that for an evaluation year of 2002, the State exceeded the applicable
enhanced performance standard.  

On September 11, 2001, the USEPA proposed to: 1) approve New Jersey’s
August 20, 2001 SIP revision; and, 2) give final approval to New
Jersey’s overall enhanced I/M SIP.  Prior to this, the State’s
enhanced I/M SIP had interim approval from the USEPA.  On January 22,
2002, the USEPA finalized its approval of New Jersey’s August 20, 2001
SIP revision and gave final approval to New Jersey’s overall enhanced
I/M SIP.   

G.	Proposed Enhanced I/M SIP Revision - December 31, 2001  tc "G.
Proposed Enhanced I/M SIP Revision - December 31, 2001 " \l 2 

On December 31, 2001, the State of New Jersey submitted a proposed
revision to its enhanced I/M SIP to the USEPA.  This proposed revision
included the following:

A formal request to defer of the mandatory implementation date for
inclusion of On-Board Diagnostic (OBD) inspections into the State’s
I/M program from January 1, 2002 to January 1, 2003; 

A formal request that the State be allowed to phase-in the mandatory OBD
inspection portion of its I/M program;

Submittal, for inclusion as part of the overall enhanced I/M SIP, of
those proposed amendments to the Department of Environmental
Protection’s (NJDEP) rules which establish the necessary test
procedures and standards for implementation of an enhanced I/M program
for gasoline-fueled motor vehicles in New Jersey; and, 

Submittal, for inclusion as part of the overall enhanced I/M SIP, of
those emission-related portions of the NJMVC-proposed amendments to its
rules governing school bus inspections in New Jersey.

The proposed NJDEP regulatory amendments were attached as Appendix I to
the December 31, 2001 proposed SIP submittal and proposed the following
major modifications to N.J.A.C. 7:27-15 (Control and Prohibition of Air
Pollution from Gasoline-Fueled Motor Vehicles) and N.J.A.C. 7:27B-5 (Air
Test Method 5: Testing Procedures for Gasoline-Fueled Motor Vehicles):

Modify the framework, procedures and testing schedule by which 1996 and
newer model year vehicles will be subject to OBD inspections;

Extend the end date for the current initial ASM5015 standards for all
1981 and newer light duty gasoline vehicles (LDGVs), light duty gasoline
trucks 1 and 2 (LDGT1s and LDGT2s) from December 31, 2001 to December
31, 2002;

Replace the final standards for the ASM5015 exhaust emission test for
all model year 1994 and newer Tier I light-duty gasoline-fueled trucks 1
and 2 (LDGT1 and LDGT2s), currently scheduled for implementation on
January 1, 2002, with new "interim" standards that will go into effect
on January 1, 2003;

Replace the final standards for the ASM5015 exhaust emission test for
all pre-1996 non-Tier I LDGT1s and LDGT2s, and for all 1981 and newer
light-duty gasoline-fueled vehicles (LDGVs) with the current initial
ASM5015 standards for those vehicles, and change the implementation date
from January 1, 2002 to January 1, 2003;

Remove all references to the evaporative pressure and purge tests, and;

Change the test procedure requirements for those gasoline-fueled motor
vehicles registered as school buses by the NJMVC, and subject to
inspection by the NJMVC's School Bus Inspection Unit.

	

A hearing on the proposed SIP revision, as well as both NJDEP and
NJMVC’s proposed rulemakings, was held on February 25, 2002.  The
State received significant comments on two aspects of its January 22,
2002 proposal; the implementation plan for integrating mandatory OBD
inspections, and the implementation of interim standards for the ASM5015
exhaust emissions test to replace the current final standards. 

In addition to considering the comments, the NJDEP also took into
account other factors with regard to OBD implementation, such as the
determination that implementation of the USEPA's original OBD inspection
component design without "second chance" testing would impose less of a
burden on the State than implementation of a "phase-in" OBD inspection
program that still required the motor vehicle to be repaired to pass an
OBD inspection on re-inspection.  After evaluating all of these issues,
the State determined not to adopt the proposed OBD implementation plan
or the interim standards for ASM5015 exhaust emission test.  Although
the State considered adopting the remaining changes proposed in its
January 22, 2002 proposal, it determined that it would be clearer to the
public if the NJDEP developed a new proposal that included the State's
revised OBD implementation plan, and provided for continuation of the
initial ASM standards without the implementation of final standards.  As
such, the NJDEP determined not to adopt its January 22, 2002 rule
proposal and, on April 22, 2002, the NJDEP submitted a SIP revision that
took the following action with regard to the State’s enhanced I/M
program: 

Withdrew the State’s request to phase-in OBD inspections into New
Jersey’s enhanced I/M program;

Withdrew the State’s submittal of the January 22, 2002 NJDEP rule
proposal, and; 

Submitted a final SIP revision requesting a deferral of the mandatory
implementation date for inclusion of OBD inspections into the State I/M
program from January 1, 2002 to January 1, 2003.  This request included
a commitment to modify the rule date for OBD inspection.

In the letter transmitting this SIP revision to the USEPA, the State
indicated that, should the NJMVC act to adopt its latest school bus rule
proposal, the NJDEP would then submit to the USEPA for their review and
approval, a final SIP revision that includes that adoption, as well as
the NJMVC’s previous rule adoption which removed from the I/M program
those gasoline-fueled vehicles registered as school buses, and thus
subject to inspection by the NJMVC’s school bus inspection unit, from
the enhanced I/M program requirements.  This second rule adoption was
submitted to the USEPA as a proposed SIP revision on June 9, 2001 and
the adoption appeared in the October 15, 2001 edition of the New Jersey
Register. 

	H.	Proposed Enhanced I/M SIP Revision - April 24, 2002 tc "H.	Proposed
Enhanced I/M SIP Revision - April 24, 2002 " \l 2 

On April 24, 2002, the NJDEP submitted a revision to its enhanced I/M
SIP that consisted of proposed amendments to the NJDEP rules governing
the implementation of the enhanced I/M program in New Jersey. 
Specifically, the NJDEP's rule proposal  made the following major
changes to the State’s enhanced I/M program:

Modified the framework, procedures and testing schedule by which model
year 1996 and newer vehicles would be subject to on-board diagnostic
(OBD) inspections.  The proposed program modifications included changing
the start date for mandatory OBD inspections (pass/fail determinations)
from January 1, 2001, to June 1, 2003.  The proposal set forth the
testing protocols for OBD inspections on 1996 and newer vehicles;

Eliminated the end date for the use of the “initial” emission
standards for the ASM5015 exhaust emission test.  This would allow for
the continued use of these initial standards;

Removed the "final" emission standards for the ASM5015 exhaust emission
test;

Removed all references to the evaporative pressure and purge tests while
retaining the evaporative fuel cap (or gas cap) leak test; and;

Exempted from dynamometer testing those pre-1996 light-duty vehicles
that are registered as school buses and that are under the jurisdiction
of the NJMVC’s School Bus Inspection Unit.  1996 and newer light-duty
vehicles registered as school buses would receive an OBD inspection.

A hearing on the NJDEP's new proposal, and the associated proposed SIP
revision, was held on June 24, 2002 and the comment period ended on July
30, 2002.  On December 15, 2003 (68 Fed. Reg. 69640), the USEPA proposed
approval of this revision to New Jersey's enhanced I/M SIP.  USEPA gave
final approval of this revision on May 21, 2004 (69 Fed. Reg. 29234).

	

Revised Performance Standard Modeling SIP Revision  - November 27, 2002

On November 27, 2002, the NJDEP submitted a revision to New Jersey’s
enhanced Inspection and Maintenance (I/M) program State Implementation
Plan (SIP) which contained a revision to New Jersey’s enhanced I/M
performance standard modeling.  The primary reason for this revised
performance standard modeling was to satisfy the USEPA's requirements
for securing their approval for the State to extend the new vehicle
emission inspection exemption from one inspection cycle (i.e., 2 years)
to two inspection cycles (i.e., 4 years).  Governor James E. McGreevey
enacted this new car emission inspection exemption on July 1, 2002,
however, implementation of this exemption was contingent on USEPA
approval. 

In addition to the extension to the new car emission inspection
exemption, New Jersey proposed several modifications to its enhanced I/M
program design since the State's previous performance standard submittal
on August 20, 2001.  These proposed changes would impact the
effectiveness of the overall I/M program.  Specifically, the NJDEP
proposed the following changes to its enhanced I/M regulations in the
May 20, 2002 New Jersey Register (N.J.R.):

Modified the framework, procedures and testing schedule by which model
year 1996 and newer vehicles would be subject to on-board diagnostic
(OBD) inspections.  The proposed program modifications included changing
the start date for mandatory OBD inspections (pass/fail determinations)
from January 1, 2001, to June 1, 2003 and set forth the testing
protocols for OBD inspections on 1996 and newer vehicles;

Eliminated the end date for the use of the “initial” emission
standards for the ASM5015 exhaust emission test to allow for the
continued use of these initial standards;

Removed the "final" emission standards for the ASM5015 exhaust emission
test;

Removed all references to the evaporative pressure and purge tests while
retaining the evaporative fuel cap (or gas cap) leak test; and,

Exempted from dynamometer testing those pre-1996 light-duty vehicles
that are registered as school buses and that are under the jurisdiction
of the NJDMV’s School Bus Inspection Unit.  1996 and newer light-duty
vehicles registered as school buses would receive an OBD inspection.

The NJDEP's November 27, 2002 revision revised the State's enhanced I/M
performance standard modeling to account for the four-year new car
exemption, as well as the NJDEP's May 20, 2002 proposed rule changes. 
This revision showed that for the evaluation years 2002, 2005 and 2007,
the State's I/M program meets the low enhanced performance standard.  On
November 5, 2002 (67 Fed. Reg. 67345), the USEPA proposed approval of
this revision to New Jersey's enhanced I/M SIP.  The USEPA gave this
revision final approval on February 18, 2003 (68 Fed. Reg. 7704).

   42 U.S.C.A. §7511a (c)(3).

   42 U.S.C.A. §7512a(a)(6).

   42 U.S.C.A. §7511c(b)(1)(A).

.§51, 57 Fed. Reg. 52987 (November 5, 1992). 

 

   40 C.F.R. §51.353, 57 Fed. Reg. 52990 (November 5, 1992).

  40 C.F.R.  52, 62 Fed. Reg. 26401 (May 14, 1997).

  These documents were submitted as an attachment to a letter dated
January 31, 1997 from Commissioner Robert C. Shinn, Jr., New Jersey
Department of Environmental Protection, to Jeanne M. Fox, Regional
Administrator, USEPA, Region II.

  This modeling and its supporting documentation were submitted as an
attachment to a letter dated January 30, 1998 from Commissioner Robert
C. Shinn, Jr., New Jersey Department of Environmental Protection to
William J. Muszynski, P.E., Deputy Regional Administrator, USEPA, Region
II.

   The State of New Jersey Department of Environmental Protection,
Revision to the State Implementation Plan (SIP) for the Inspection and
Maintenance (I/M) Program for the State of New Jersey, December 14,
1998.

  61 Fed. Reg. 56172, (October 31, 1996).

  The New Jersey State Implementation Plan (SIP) Revision for the
Attainment and Maintenance of the Carbon Monoxide National Ambient Air
Quality Standard, November 17, 1994.  The State, on July 10, 1997,
proposed a revision to this SIP.  A hearing on this proposal took place
on August 11, 1997 and the comment period closed on August 20, 1997. 
This SIP revision was submitted to the USEPA on August 7, 1998.  To
date, the USEPA has taken no action on New Jersey’s submittal.

   63 Fed. Reg. 45402 (August 26, 1998).

  33  N.J.R. 1894(a) (June 4, 2001).

  33 N.J.R. 3651(b) (October 15, 2001).

 The State of New Jersey Department of Environmental Protection, Report
on the 

Inspection and Maintenance (I/M) Program for the State of New Jersey,
National Highway Systems Designation Act (NHSDA) Submittal, December 13,
2000.

  Although this document was submitted to the USEPA on August 31, 2001,
the date on the SIP submittal document is August 20, 2001.

  40 C.F.R.  52, 62 Fed. Reg. 26401 (May 14, 1997).

  67 Fed. Reg. 2811 (January 22, 2002).

  Submitted December 31, 2001 under cover letter from then NJDEP
Commissioner Robert C. Shinn, Jr. to Jane M. Kenny, Regional
Administrator, USEPA Region II.

  Please note that the NJDMV’s school bus rule proposal was forwarded
to the USEPA under separate cover from the original proposed SIP
revision.  Specifically, this proposal was forwarded on March 26, 2001
from Chris Salmi, Manager of the Bureau of Air Quality Planning in the
NJDEP to Raymond Werner, Chief of the Air Programs Branch, USEPA -
Region II.

  To determine whether a vehicle is classified as a LDGV, LDGT1, LDGT2
or HDGV please refer to the definition section of the NJDEP’s rules at
N.J.A.C. 7:27-15.1.

  The State of New Jersey Department of Environmental Protection,
Enhanced Inspection and Maintenance (I/M) Program for the State of New
Jersey, Request to Defer the Integration of On-Board Diagnostic (OBD)
Inspections into the State’s I/M Program, SIP Revision, April 22,
2002.

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