Highlands Ranch Neighborhood v. Cater

CourtCourt of Appeals for the Tenth Circuit
DecidedMarch 18, 2022
Docket19-1190
StatusUnpublished

This text of Highlands Ranch Neighborhood v. Cater (Highlands Ranch Neighborhood v. Cater) is published on Counsel Stack Legal Research, covering Court of Appeals for the Tenth Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Highlands Ranch Neighborhood v. Cater, (10th Cir. 2022).

Opinion

Appellate Case: 19-1190 Document: 010110659310 Date Filed: 03/18/2022 Page: 1 FILED United States Court of Appeals UNITED STATES COURT OF APPEALS Tenth Circuit

FOR THE TENTH CIRCUIT March 18, 2022 _________________________________ Christopher M. Wolpert Clerk of Court HIGHLANDS RANCH NEIGHBORHOOD COALITION, a Colorado non-profit corporation,

Plaintiff - Appellant,

v. No. 19-1190 (D.C. No. 1:16-CV-01089-RM) JOHN M. CATER, in his official capacity (D. Colo.) as the Division Administrator, Colorado Division of the Federal Highway Administration; FEDERAL HIGHWAY ADMINISTRATION; SHOSHANNA LEW, in her official capacity as the Executive Director of the Colorado Department of Transportation; COLORADO DEPARTMENT OF TRANSPORTATION,

Defendants - Appellees. _________________________________

ORDER AND JUDGMENT * _________________________________

Before HOLMES, BACHARACH, and EID, Circuit Judges. _________________________________

This appeal considers whether defendants-appellees, the Colorado Department

of Transportation and the Federal Highway Administration (“the Agencies”), violated

the National Environmental Policy Act (NEPA), 42 U.S.C. § 4321 et seq., and the

* This order and judgment is not binding precedent, except under the doctrines of law of the case, res judicata, and collateral estoppel. It may be cited, however, for its persuasive value consistent with Fed. R. App. P. 32.1 and 10th Cir. R. 32.1. Appellate Case: 19-1190 Document: 010110659310 Date Filed: 03/18/2022 Page: 2

Administrative Procedure Act (APA), 5 U.S.C. § 551 et seq., by implementing only

short-term measurements to assess the noise impact of a highway-expansion project.

For the following reasons, we affirm the district court’s order approving the

Agencies’ decision.

I.

Colorado is expanding a state highway through the southwestern part of the

Denver metropolitan area. Because the expansion project involves federal funds, the

Agencies must comply with applicable federal law. Specifically, NEPA regulations

require the Agencies to perform an Environmental Assessment (“EA”) to determine

whether noise from the expanded highway would significantly impact the

surrounding areas. 40 C.F.R. § 1501.5; see also WildEarth Guardians v. Conner, 920

F.3d 1245, 1251 (10th Cir. 2019) (requiring an agency to submit an assessment of

any action that may affect the environment, unless the answer to the initial inquiry of

“whether the proposed action will significantly affect the environment” is

“immediately apparent”).

To complete this assessment, Federal Highway Administration regulations

direct the Agencies to follow Colorado’s state-specific guidelines for evaluating

noise levels. See 23 C.F.R. § 772.7(b) (requiring state-highway agencies to develop

and implement noise-evaluation policies consistent with federal regulations). These

state-specific guidelines, found in Colorado’s 2015 Noise Analysis and Abatement

Guidelines (“the Guidelines”), require the Agencies to (1) identify the areas that will

be affected by traffic noise, (2) evaluate the noise using Traffic Noise Model (TNM)

2 Appellate Case: 19-1190 Document: 010110659310 Date Filed: 03/18/2022 Page: 3

software, and (3) validate the TNM with noise measurements. See App’x Vol. VI at

1282–92.

At the heart of this dispute is step three: noise validation. The Agencies

determined that sections 3.2.2 and 3.3 of the Guidelines permitted validation of the

TNM using short-term noise measurements. Section 3.2.2 addresses modifications to

existing roadways, and it requires the Agencies to perform at least two noise

measurements. This section does not require a particular measurement method;

instead, it requires only that the measurements “best illustrat[e] the existing traffic

noise environment.” Id. at 1288. Section 3.3 explains that in order to optimize the

TNM’s ability to “determine the worst-hour existing noise levels and predict . . .

future noise levels,” field measurements are compared to the TNM’s results. Id.

Taking these sections together, the Agencies determined that short-term noise

measurements would best represent traffic noise.

After performing only short-term measurements, the Agencies drafted an EA

concluding that noise-mitigation measures would be needed only in select areas along

the highway. The Agencies then submitted the EA for public comment. During this

comment period, the public raised concerns about noise mitigation. In response, the

Agencies conducted long-term noise measurements. The Agencies did not

incorporate the long-term measurements in the final assessment, but they noted that

the results from the long-term measurements did not necessitate any changes. After

the close of the public-comment period, the Agencies released a Finding of No

3 Appellate Case: 19-1190 Document: 010110659310 Date Filed: 03/18/2022 Page: 4

Significant Impact (“FONSI”) with respect to the traffic noise and continued with the

expansion project. 1

Plaintiff-appellant, the Highlands Ranch Neighborhood Coalition (“the

Coalition”), is a group of residents who live in the areas along the highway that will

not receive noise-mitigation measures. The Coalition contends that the Agencies’

decision to use only short-term noise measurements violated NEPA. Specifically, the

Coalition points out that the Guidelines contain a 2006 Traffic Noise Model Users

Guide (“the Users Guide”) and argues that section 4.0 of the Users Guide requires

both short- and long-term noise measurements to validate the TNM. Accordingly,

the Coalition sought judicial review of the Agencies’ EA and FONSI.

The district court determined that the Agencies could rely on only short-term

noise measurements but needed to provide a rational basis for doing so. The district

court then issued two remand orders instructing the Agencies to outline and support

their rationale for using short-term measurements. After the second remand, the

district court affirmed the Agencies’ decision and determined that the Users Guide

was discretionary “by its own terms.” App’x Vol. V at 953. Thus, the Agencies need

only “consider[]” the Users Guide. Id. at 950 (emphasis in original). Because the

1 Under NEPA, if an agency’s EA indicates that the proposed action will not significantly impact the environment, the agency issues a FONSI. 40 C.F.R. §§ 1501.6(a), 1508.13. If the EA concludes that the proposed action will significantly impact the environment, the agencies must prepare an environmental impact statement, which requires more extensive analysis than the EA. Id. §§ 1501.5(c)(1), 1502 (detailing requirements for impact statements). 4 Appellate Case: 19-1190 Document: 010110659310 Date Filed: 03/18/2022 Page: 5

Agencies showed that they considered the Guide, the district court affirmed. The

Coalition appeals.

II.

The Coalition argues that the Agencies’ decision to use only short-term noise

Free access — add to your briefcase to read the full text and ask questions with AI

Related

Copar Pumice Co., Inc. v. Tidwell
603 F.3d 780 (Tenth Circuit, 2010)
WildEarth Guardians v. Conner
920 F.3d 1245 (Tenth Circuit, 2019)

Cite This Page — Counsel Stack

Bluebook (online)
Highlands Ranch Neighborhood v. Cater, Counsel Stack Legal Research, https://law.counselstack.com/opinion/highlands-ranch-neighborhood-v-cater-ca10-2022.