# Opposition — Mountain States Legal Foundation v. Costle

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## Record

- **Collection:** Supreme Court brief
- **Document type:** Opposition
- **Published:** January 1, 1981
- **Citation:** 450 U.S. 1050

## Text

No. 80-1084

IN THE

Supreme Court of the Wnited States
October Term, 1980

MOwuNTAIN STATES LEGAL FOUNDATION, et al.,
Petitioners,

versus

DouG.as M. CosTLe, et al.,
Respondents.

ON PETITION FOR WRIT OF CERTIORARI TO
THE UNITED STATES COURT OF APPEALS
FOR THE TENTH CIRCUIT

MEMORANDUM OF THE STATE OF
COLORADO OPPOSING CERTIORARI

J. D. MacFARLANE
Attorney General

RICHARD F. HENNESSEY
Deputy Attorney General

MARY J. MULLARKEY
Solicitor General

JANICE L. BURNETT
Assistant Attorney General
Natural Resources Section

LAWRENCE A. DeCLAIRE
Assistant Attorney General
Natural Resources Section

Attorneys for State of Colorado

1525 Sherman Street, 3d Floor
Denver, Colorado 80203
Telephone: 839-3611

TABLE OF AUTHORITIES

Cases
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]
No. 80-1084

IN THE SUPREME COURT OF THE UNITED STATES
October Term, 1980

MOUNTAIN STATES LEGAL FOUNDATION, A non-profit cor-
poration on behalf of its members who are citizens of the State of
Colorado; THE FOLLOWING MEMBERS OF THE SENATE
AND HOUSE OF REPRESENTATIVES OF THE STATE OF
COLORADO IN THEIR RESPECTIVE OFFICIAL CAPACITIES
AS INDIVIDUALLY ELECTED LEGISLATORS OF THE STATE
OF COLORADO: Senator FRED E. ANDERSON; Senator DAN
D. NOBLE; Senator L. DUANE WOODARD; Senator DONALD
A. SANDOVAL; Representative ROBERT F. BURFORD: Repre-
sentative JOHN G. HAMLIN; Representative W.H. (BILL)
BECKER; Representative BOB LEON KIRSCHT; Representative
CARL B. BLEDSOE; Representative C. MICHAEL CALLIHAN;:
Senator RALPH A. COLE; Representative FRANK DE FILIPPO;
Representative STEVEN J. DURHAM; Representative CARL H.
GUSTAFSON; Representative WILLIAM F. HILSMEIER; Sena-
tor DON MacMANUS; Representative JOHN R. McELDERRY;:
Representative RAY POWERS: Representative FRANK H. RAN-
DALL; Representative PAUL D. SCHAUER; Representative BEV
SCHERLING; Representative JAMES M. SHEPARD; Repre-
sentative CARL E. SHOWALTER; Representative A. J. (MICK)
SPANO; Representative KATHY SPELTS; Representative NICK
THEOS; and the STATE OF COLORADO ex rel. MOUNTAIN
STATES LEGAL FOUNDATION,
Petitioners,

V.

DOUGLAS M. COSTLE, in his official capacity as Administrator
of the UNITED STATES ENVIRONMENTAL PROTECTION
AGENCY; ROGER L. WILLIAMS in his official capacity as Re-
gional Administrator of Region VIII of the UNITED STATES
ENVIRONMENTAL PROTECTION AGENCY: AND THE STATE
OF COLORADO ex rel. J. D. MacFARLANE,

Respondents.

ON PETITION FOR WRIT OF CERTIORARI TO
THE UNITED STATES COURT OF APPEALS
FOR THE TENTH CIRCUIT

MEMORANDUM OF THE STATE OF COLORADO
OPPOSING CERTIORARI

For the reasons discussed in this memorandum, the Siate of
Colorado respectfully requests that the petition for writ of cer-
tiorari be denied because the issues presented are moot.

This case arose out of the petition of Mountain States Legal
Foundation and others to the Tenth Circuit Court of Appeals
pursuant to section 307 of the Clean Air Act, 42 U.S.C. §7607,
for judicial review of final rulemaking of the United States
Environmental Protection Agency (EPA) conditionally approv-
ing portions of Colorado’s State Implementation Plan (SIP) on
October 5, 1979 (44 Fed. Reg. 57401(1979)) (See Pet. 3la-
50a).

As part of said final rulemaking, EPA granted conditional
approval to the Denver element of the Colorado SIP as pertains
to control strategies for ozone and to the Denver, Colorado
Springs, and Larimer-Weld elements of the SIP as pertain to
control strategies for carbon monoxide on condition that the
plan be revised to include ‘‘an adequate vehicle emissions con-
trol inspection/maintenance program’”’. 44 Fed. Reg. 57410
(1979). Elsewhere in the same Federal Register, EPA proposed
deadlines by which various conditions would have to be met to
secure approval of those elements of the SIP which had received
conditional approval. These proposed deadlines included a
March 1, 1980 date for submission to EPA of legislation and
schedules for implementation of an adequate vehicle emissions
control inspection/maintenance program. 44 Fed. Reg. 57427,
57428 (1979). The proposed deadline of March 1, 1980 for
submission of an inspection/maintenance program was final-
ized by EPA rulemaking on February 5, 1980. 45 Fed. Reg.
7801, 7802 (1980).

The State of Colorado failed to meet the March 1, 1980
deadline. On March 14, 1980, EPA published a final rule
(1) disapproving the ozone (Denver) and carbon monoxide
(Denver, Colorado Springs, and Larimer-Weld) control por-
tions of the Colorado SIP and (2) imposing (a) resirictions on
construction of major new or modified stationary sources in the
affected ozone and carbon monoxide non-attainment areas
pursuant to section 110(a)(2)(I) of the Clean Air Act, 42 U.S.C.
§7410(a)(2)(I), and (b) a limitation of certain federal assistance
under sections 176(a) and 316 of the Act, 42 U.S.C. §§7506(a) and

3

7616. On March 13, 1980 at the hearing on the petition for
review of the October 5, 1979 rulemaking, the court below
stayed EPA enforcement of such ‘‘sanctions”’ until May 2, 1980.
In response to the court’s order, EPA amended its final rule to
postpone the effective date of its March 14, 1980 action until
May 2, 1980 (45 Fed. Reg. 21634 (April 2, 1980)), when the
sanctions took effect.

On May 7, 1980, the Colorado General Assembly adopted
Senate bill 52 (codified as part of article 4 of title 42, C.R.S.
1973; 1980 Colo. Sess. Laws, ch. 169) establishing an inspec-
tion/maintenance program for Colorado. On May 23, 1980
Governor Richard D. Lamm signed the bill into law and on May
29, 1980, the state submitted the bill to EPA together with
supporting documentation, including detailed schedules for im-
plementation.

After reviewing the submittal, on July 10, 1980 (effective
July 16, 1980), EPA approved the automobile exhaust emis-
sions control program for inclusion in the Colorado SIP and
removed the federal funding and stationary source construction
restrictions. 45 Fed. Reg. 47682-85 (July 16, 1980). The July 16,
1980 EPA rulemaking is included herein as Appendix A.

The issues raised by petitioners no longer present ‘‘a live
controversy.’’ Colorado has adopted an automobile exhaust
emissions control inspection/maintenance program and EPA
has approved that program as meeting the requirements of
section 172(b)(11)(B) of the Clean Air Act, 42 U.S.C.
§7502(b)(11)(B), and has acted to (unconditionally) approve
the Colorado SIP and to remove sanctions. The State of Colo-
rado is not now subject to sanctions nor is it subject to having to
meet any conditions in order to avoid the imposition of sanc-
tions. Because they are no longer live, the issues concerning the
propriety of EPA’s October 5, 1979 conditional approval of the
Colorado SIP and imposition of sanctions under the Clean Air
Act are moot. Sosna v. lowa, 419 U.S. 393 (1975); DeFunis v.
Odegaard, 416 U.S. 312 (1974).

Therefore, the petition for a writ of certiorari should be
denied.

Respectfully submitted,

J. D. MacFARLANE
Attorney General

RICHARD F. HENNESSEY
Deputy Attorney General

4

MARY J. MULLARKEY
Solicitor General

JANICE L. BURNETT
Assistant Attorney General
Natural Resources Section

LAWRENCE A. DeCLAIRE
Assistant Attorney General
Natural Resources Section

Attorneys for State of Colorado
1525 Sherman Street, 3d Floor

Denver, Colorado 80203
Telephone: 839-3611

la

APPENDIX A

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52
[FRL 1539-2]

Approval and Promulgation of State
Implementation Plans; Colorado

AGENCY: Environmental Protection Agency.

ACTION: Final Rule.

SUMMARY: Effective May 2, 1980 (45 FR 16486 and 45
FR 21634), the carbon monoxide and ozone portions of the
Colorado State Implementation Plan (SIP) were disapproved by
the Environmental Protection Agency (EPA) because of the
State’s failure to adopt and submit an acceptable automobile
exhaust emissions control program. This disapproval action
invoked the stationary source construction restrictions required
by Section 110(a)(2)(1) of the Clean Air Act. At the same time,
EPA began exercising its authority under Sections 176(a) and
316 of the Act to withhold certain federal assistance from the
affected nonattainment areas.

On May 29, 1980, the Governor submitted written evi-
dence of the State’s legal authority to implement and enforce an
automobile emissions control program as well as schedules for
implementing that program and a demonstration that it will
achieve a 25% reduction in exhaust emissions by 1987. Today,
EPA is approving this element of the SIP and is removing the
funding and construction restrictions which are currently in
effect.

EFFECTIVE DATE: July 16, 1980.

Under Section 307(b)(1) of the Clean Air Act, judicial
review of this final rulemaking is available on/y by the filing of a
petition for review in the United States Court of Appeals for the
appropriate circuit by September 15, 1980. Under Section
307(b)(2) of the Clean Air Act, the requirements which are the

2a

subject of today’s notice may not be challenged later in the civil
or criminal proceedings brought by EPA to enforce these re-
quirements.

FOR FURTHER INFORMATION CONTACT: Robert R. De-
Spain, Chief, Air Programs Branch, Environmental Protection
Agency, 1860 Lincoln Street, Denver, Colorado 80295, (303)
837-3471.

SUPPLEMENTARY INFORMATION: EPA finds good cause
exists for making the action taken in this notice immediately
effective for the following reasons: (1) implementation plan
revisions are already in effect under state law and EPA poses no
additional regulatory burden, (2) EPA has a responsibility under
the Act to take final action on the portion of the SIP which
addresses Part D requirements by July 1, 1979, or as soon
thereafter as possible, and (3) this action removes federal fund-
ing and construction restrictions which have been in effect in
certain nonattainment areas in Colorado since May 2, 1980.

Background

On January 2, 1979, the Governor of Colorado submitted a
State Implementation Plan (SIP) revision in response to the
requirements of Part D of the Clean Air Act (the ‘‘Act’’), as
amended in 1977. In general, the SIP is required to provide for
the attainment and maintenance of the national ambient air
quality standards for all areas which have been designated
‘“nonattainment” pursuant to Section 107 of the Act. A critical
portion of the control strategy for attainment and maintenance
of the carbon monoxide and ozone standards, in portions of
Colorado, is the implementation of an inspection and mainte-
nance program. “‘Inspection/Maintenance” (I/M) refers to a
program whereby motor vehicles receive periodic inspections to
assess the functioning of their exhaust emission control systems.
Vehicles which have excessive emissions must then undergo
mandatory maintenance. Generally, I/M programs include pas-
senger cars, although other classes can be included as well.
Noncomplying vehicles can be prohibited from operating by
requiring proof of compliance to purchase license plates or to
register a vehicle. In certain cases, a windshield sticker system
can be used, much like many safety inspection programs.

Section 172 of the Clean Air Act requires that State Imple-
mentation Plans which include nonattainment areas meet cer-
tain criteria. These criteria have been discussed in detail in the
General Preamble for Proposed Rulemaking on Approval of
Plan Revisions for Nonattainment Areas, 44 FR 20377 (April 4,

3a

1979), and its various supplements, 44 FR 38583 (July 2, 1979),
44 FR 50371 (August 28, 1979), and 44 FR 53761 (September
17, 1979), and 44 FR 67182 (November 23, 1979). For areas
which demonstrate that they will not be able to attain the
ambient air quality standards for ozone or carbon monoxide by
the end of 1982, despite the implementation of all reasonably
available measures, an extension up to 1987 may be granted. In
such cases, Section 172(b)(11)(B) requires that: “the plan pro-
visions shall establish a specific schedule for implementation of
a vehicle emission control inspection and maintenance pro-
gram. ..’’ In Colorado the areas which are required to have an
I/M program are portions of Larimer, Weld, Adams, Arapahoe
and El Paso Counties, and the Counties of Denver, Boulder,
Douglas, and Jefferson.

EPA issued guidance on February 24, 1978, on the general
criteria for SIP approval including I/M, and on July 17, 1978,
regarding the specific criteria for I/M SIP approval. Both of these
items are part of the SIP guidance material referred to in the
General Preamble for Proposed Rulemaking (44 FR 20372,
20373, n 6). Although the July 17, 1978, guidance should be
consulted for details, the key elements for I/M SIP approval are

as follows:
Legal Authority. States or local governments must have

adopted the necessary statutes, regulations, ordinances, etc., to
implement and enforce the inspection/maintenance program.
(Section 172(b)(10).)

Commitment. The appropriate governmental unit(s) must
be committed to implement and enforce the I/M program. (Sec-
tion 172(b)(10).)

Resources. The necessary finances and resources to carry
out the I/M program must be identified and committed. (Section
172(b)(7).)

Schedule. A specific schedule to esstablish the /M program
must be included in the State Implementation Plan. (Section
172(b)(11)(B).) Interim milestones are specified in the July 17,
1978, memorandum in accordance with the general require-
ment of 40 CFR 51.15(c).

Program effectiveness. As set forth in the July 17, 1978,
guidance memorandum, the I/M program must achieve a 25%
reduction in passenger car exhaust emissions of hydrocarbons
and a 25% reduction for carbon monoxide. This reduction is
measured by comparing the levels of emissions projected to
December 31, 1987, with and without the I/M program. This
policy is based on Section 172(b)(2) which states “the plan

«

4a

provisions ... shall ... provide for the implementation of all
reasonably available control measures... .

Specific detailed requirements of these five provisions are
discussed below:

To be acceptable, I/M legal authority must be adequate to
implement and effectively enforce the program and must not be
conditioned upon further legislative approval or any other sub-
stantial contingency. However, the legislation can delegate cer-
tain decision making to an appropriate regulatory body. For
example, a state department of environmental protection or
department of transportation may be charged with im-
plementing the program, selecting the type of test procedure as
well as the type of program to be used, and adopting all neces-
sary rules and regulations. I/M legal authority must be included
with any plan revision which must include i/M (i.e., a plan
which establish an attainment date beyond December 31, 1982)
unless approved extension to certify legal authority is granted by
EPA. The granting of such an extension, however, is an excep-
tional remedy to be utilized only when a state legislature has had
no opportunity to consider enabling legislation.

Written evidence is also required to establish that the
appropriate governmental bodies are ““committed to implement
and enforce the appropriate elements of a plan.”’ (Section
172(b)(10).) Under Section 172(b)(7), supporting commit-
ments for the necessary financial and manpower resources are
also required.

A specific schedule to establish an inspection/maintenance
program is required. (Section 172(b)(11)(B).) The July 17,
1978, guidance memorandum established as EPA policy the key
milestones for the implementation of various I/M programs.
These milestones were the general SIP requirement for com-
pliance codified at 40 CFR 51.15(c). This section requires that
increments of progress be incorporated for compliance sched-
ules of over one year in length.

To be acceptable an I/M program must achieve the requisite
25% reductions in both hydrocarbons and carbon monoxide
exhaust emissions from passenger cars by the end of calendar
year 1987. The Act mandates “Implementation of all reasonably
available control measures as expeditiously as practicable.”’
(Section 172(b)(2).) At the time of passage of the Clean Air Act
Amendments of 1977, several inspection/maintenance pro-
grams were already operating. Mandatory programs in New
Jersey and Arizona provide for a stringency of approximately
20%. (The stringency of a program is defined as the initial

5a

proportion of vehicles which would have failed the program’s
standards if the affected fleet had not undergone I/M before.
Because some motorists tune their vehicles before I/M tests, the
actual proportion of vehicle failing is usually a smaller number
than the stringency of the program.) Depending on the program
type (private garage or centralized inspection) a mandatory I/M
program may be implemented as late as December 31, 1982,
and the attainment date may be as late as December 31, 1987.
Based on an implementation date of December 31, 1982, and a
20% stringency factor, EPA predicts the reductions of both CO
and HC exhaust emissions of 25% can be achieved by December
31, 1987. Earlier implementation of I/M will produce greater
emission reductions. Thus, because of the Act’s requirement for
the implementation of all reasonably available control measures
and because New Jersey and Arizona have effectively demon-
strated practical operation of I/M programs with a 20% stringen-
cy factor, itis EPA policy to use a 25% emission reduction as the
criterion to determine compliance of the I/M portion with Sec-
tion 172(b)(2).

In an October 5, 1979, final rulemaking on the Colorado
SIP (44 FR 57401), EPA stated that the State of Colorado had
satisfied the condition for an extension of the deadline for certi-
fication of adequate legal authority for a motor vehicle exhaust
emissions control program. The reason for the extension was
confusion during the 1979 legislative session over the approva-
bility of the Bill under consideration. During the closing days of
the 1979 Legislative Session, some of the legislators misunder-
stood whether EPA could approve the program established in
Senate Bill 1 which included a commitment to study alternative
approaches to controlling motor vehicle exhaust emissions and
pass appropriate additional legislation by March 1, 1980, to
meet requirements in the Clean Air Act. Senate Bill 1 also
established a motor vehicle exhaust emissions control program
which would go into effect automatically if the Legislature did
not adopt additional legislation by March |, 1980. However, in
the October 5, 1979, rulemaking EPA indicated that the pro-
gram established in Senate Bill 1 was not acceptable and noted
specific deficiencies (44 FR 57404-57405). EPA conditionally
approved this element of the SIP with the provision that the
State certify and submit to EPA by March 1, 1980, evidence of
adequate legal authority for the required program and correc-
tions to other deficiencies noted in the October 5, 1979, rule-
making. EPA also notified the public of its intention to impose
the federal funding and new source constructions restrictions,

6a

authorized by Sections 176(a), 316, and 110(a)(2)(J) of the Act,
if the State failed to comply with this condition.

On March 14, 1980 (45 FR 16486), EPA published a final
rule disapproving the carbon monoxide and ozone portions of
the Colorado State Implementation Plan, thereby invoking the
restrictions on construction of major new or modified stationary
sources required by Section 1 10(a)(2)(I) of the Clean Air Act. In
that rule, EPA also announced that it would begin exercising its
authority under Section 176(a) and 316 of the Act to withhold
certain federal assistance from the affected nonattainment areas.

These actions superseded EPA’s October 5, 1979, con-
ditional approval of the I/M portion of the SIP and were based
on the State of Colorado’s failure to satisfy a condition of
approval, i.e., failure to submit evidence of adequate legal au-
thority to implement and enforce an acceptable automobile
exhaust emissions control program by March 1, 1980. See 44 FR
57401 (October 5, 1979) and 45 FR 7801 (February 5, 1980).
The final rule was to be effective on March 14, 1980.

On March 13, 1980, the United States Court of Appeals for
the Tenth Circuit ordered that ‘‘enforcement by the EPA of all
sanctions against the State of Colorado is stayed to and includ-
ing May 1, 1980.” Therefore, EPA amended the final rule to
respond to the Court order, and stay the effective date of the
action published on March 14, 1980, to May 2, 1980 (45 FR

21634).
On May 2, 1980, the State had not yet adopted legal au-

thority for and automobile exhaust emissions control program.
Therefore, the carbon monoxide and ozone portions of the SIP
were disapproved and funding and construction restrictions
became effective on that date.

State Submittal

On May 7, 1980, the legislature adopted the Bill which is
the subject of this notice. On May 23, 1980, Governor Richard
Lamm signed the Bill into law and on May 29, 1980, the State
submitted the Bill to the EPA together with supporting docu-
mentation, including detailed schedules for implementation
and a demonstration that the program will achieve a 25%
reduction in exhaust emissions by 1987. The supporting docu-
mentation represents a commitment by the Departments of
Health and Revenue to carry out and enforce the program, and
the resources necessary to do so are also identified and com-
mitted.

7a

The law calls for annual emissions inspection for 1968 and
later model year light duty vehicles including light duty trucks in
the Front Range area (basically Denver, Boulder, Colorado
Springs, Fort Collins, and Greeley). The Health Department will
adopt emissions standards for each model year. Standards will
be set so that at least 60% of 1968-1974 vehicles and at least
70% of 1975 and later vehicles can meet the standards.

Cars will be tested using emissions analyzers. If they com-
ply with the standards, they will be issued a certificate of emis-
sions compliance. Model year 1968-1980 vehicles which fail to
comply with the standards at the time of testing will be adjusted
to manufacturers specifications and then retested. If they still fail
to meet standards, they will be issued a certificate of emissions
adjustment and no further repairs or maintenance will be re-
quired, unless emissions control devices have been altered, re-
moved, disabled or rendered inoperative. Visual inspection of
emission control devices will be performed. Owners of model
year 1981 and later vehicles which fail to comply with standards
at the time of testing will be required to repair their vehicles to
meet standards. If these vehicles still fail to meet standards after
expending up to $100 on emissions related repair costs, they
will be issued a certification of emissions adjustment.

The high altitude performance adjustments provided by
Section 215 of the Clean Air Act will be included as part of the
adjustments required.

The full program will begin on January 1, 1982, but a
change of ownership and voluntary program will begin July 1,
1981. The provisions of the program requiring repairs on 1981
and later model year vehicles will begin July 1, 1982.

The emissions tests and adjustments will be conducted by
trained mechanics. The mechanic training and licensing pro-
gram will be run by the Department of Health and mechanics
will have to pass a competency test before being licensed. The
Department of Health will also administer an information pro-
gram to insure public acceptance.

The Department of Health will insure quality control by:

(1) establishing specifications and standards for emissions
analyzers and emissions analyzers to be used by inspection
stations will have to be approved by the Department;

(2) checking and calibrating the analyzers on a regular
basis;

(3) establishing procedures to be used in conducting in-
spections and performing adjustments; and

8a

(4) periodically sending “unmarked” vehicles through in-
spection stations to evaluate program effectiveness.

The Department of Health will also continuously evaluate
the effectiveness of the program and make annual recom-
mendations to the Legislature regarding needed program im-,
provements. The evaluation will focus particularly on whether a
significant number of vehicles are failing to pass the retest after
adjustments are made, developing alternative procedures to be
followed for repairing 1981 and later vehicles which will not be
adjustable and may require repairs or parts replacement to
comply with the standards.

Enforcement of the program will be by the Department of
Revenue through the safety inspection program. If a vehicle
does not have a valid certificate of emissions control at the time
of safety inspection, no safety inspection sticker may be issued
and the vehicle will be prohibited from operating. Penalty provi-
sions are included. The Department of Revenue will also
administer a referee program.

Emissions standards for new vehicles sold at high altitudes
have been proposed by EPA, effective with the 1982 model year.
The existence of these standards will result in the Colorado I/M
program enabling warranty coverage under Section 207(b) of
the Clean Air Act. Properly maintained 1982 and later model
year vehicles failing inspection will have engine components
affecting emissions repaired at the expense of the vehicle manu-
facturer for the first two years or 24,000 miles. Emission control
equipment will be covered for five years or 50,000 miles.

Final Action

On June 13, 1980, (45 FR 40169) EPA proposed approval
of the Governor’s submittal and solicited comments on this
action. One comment was received; however, it did not address
the adequacy of the state I/M program, but rather objected to
EPA’s use of federal funding and stationary source construction
restrictions to obtain State compliance.

EPA believes its actions on an adequate I/M program were
clearly authorized by Sections 176(a), 316 and 110(a)(2)(I) of
the Act. Furthermore, EPA believes the provisions of the Act
authorizing such actions are constitutional. Federal funding
restrictions are the traditional method used by Congress to gain
State cooperation in federal programs. The construction mora-
torium is an interim prohibition on private pollution sources
and is invoked solely for the purpose of protecting public health.
EPA’s position on these issues are explained in more detail in

9a

briefs and other documents filed by the Agency in the Mountain
States Legal Foundation, et al., v Costle lawsuit (Case No. 79-
2261, U.S. Court of Appeals for the Tenth Circuit).

EPA is approving Colorado’s automobile exhaust emis-
sions control program for inclusion in the State Implementation
Plan. Today’s action supersedes EPA’s earlier disapproval of this
portion of the SIP, and also removes the federal funding and
stationary source construction restrictions authorized by Sec-
tions 176(a), 316 and 110(a)(2)(I) of the Act, which have been
in effect since May 2, 1980.

Colorado’s law provides adequate legal authority to imple-
ment and enforce an automobile exhaust emissions control
program beginning January 1, 1982. The law also represents a
commitment to implement and enforce the program and identi-
fies and commits adequate financial and manpower resources.
The detailed schedules provided by the State are also acceptable.

Finally with respect to program effectiveness, the State has
demonstrated the required 25% reduction in HC and CO light
duty vehicle exhaust emissions in 1987. Much of this emission
reduction will come from the inspection and maintenance pro-
gram for 1981 and later models, which features a 30% stringen-
cy with full mechanic training. EPA is concerned about the
effectiveness of the adopted adjustment program for pre-1981
models, especially the lack of a substantive requirement to pass
the retest. Should the first annual program evaluation indicate a
substantial number of these models are failing to pass the retest,
compliance with the 25% requirement will be in jeopardy, and
the State will have to revise the program accordingly.

Under Executive Order 12044, EPA is required to judge
whether a regulation is ‘‘significant’’ and therefore subject to the
procedural requirements of the Order or whether it may follow
other specialized development procedures. EPA labels these
other regulations ‘specialized’. I have reviewed this regulation
and determined that it is a specialized regulation not subject to
the procedural requirements of Executive Order 12044.

This notice of final rulemaking is issued under the authority
of Section 110, 176, and 316 of the Clean Air Act as amended.

Dated: July 10, 1980.

Douglas M. Costle,
Administrator.

10a

Title 40, Part 52 of the Code of the Federal Regulation is
amended as follows:

Subpart G — Colorado
1. Section 52.320(c)(18) is revised as follows:
§52.320 Identification of Plan.

* * * * *

(c) xk * *

(18) On May 29, 1980, the Governor submitted written
evidence of the State’s legal authority to implement and enforce
an automobile emissions control program as well as schedules
for implementing that program and a demonstration that it will
achieve a 25% reduction in exhaust emissions by 1987.

§52.324 [Amended]
2. In §52.324, paragraph (c) is deleted

§52.327 [Amended]
3. In §52.327, paragraph (a) |. is deleted.

§52.328 [Amended]
4. In §52.328, paragraph (a) |. is deleted.

---

Source: Frix Law Library, https://www.frixlaw.com/law-library/documents/brief%3Amicro_IA40385007_1058%3A3. Public record. Not legal advice.
