In re Diverging Diamond Interchange Act 250 (R.L. Vallee, Inc.)

2020 VT 98, 247 A.3d 499
Supreme Court of Vermont·Decided November 6, 2020·No. 2020-147·Published·Cited by 4 cases

Opinion

NOTICE: This opinion is subject to motions for reargument under V.R.A.P. 40 as well as formal revision before publication in the Vermont Reports. Readers are requested to notify the Reporter of Decisions by email at: JUD.Reporter@vermont.gov or by mail at: Vermont Supreme Court, 109 State Street, Montpelier, Vermont 05609-0801, of any errors in order that corrections may be made before this opinion goes to press.

2020 VT 98

No. 2020-147

In re Diverging Diamond Interchange Act 250 Supreme Court (R.L. Vallee, Inc., Appellant)

On Appeal from

Superior Court,

Environmental Division

September Term, 2020

Thomas G. Walsh, J.

Jon T. Anderson of Primmer Piper Eggleston & Cramer, and Alexander J. LaRosa of MSK Attorneys, Burlington, for Appellant.

Thomas J. Donovan, Jr., Attorney General, and Justin Kolber and Jenny E. Ronis, Assistant Attorneys General, Montpelier, for Appellees State of Vermont, Agency of Transportation, Natural Resources Board, and Agency of Natural Resources.

PRESENT: Reiber, C.J., Robinson, Eaton, Carroll and Cohen, JJ.

¶ 1. REIBER, C.J. Plaintiff R.L. Vallee, Inc. appeals the Environmental Division’s decision granting an Act 250 permit to the Vermont Agency of Transportation (VTrans) for a highway project involving the reconfiguration of an interstate exit. Vallee argues that the court applied the incorrect standard in analyzing phosphorus discharges under Act 250 Criterion 1 and improperly evaluated the evidence of phosphorus and chloride discharges under Criterion 1. We conclude that the Environmental Division applied the correct legal standard to evaluate discharges, and properly considered the evidence before it in determining that the project complies with Criterion 1. Accordingly, we affirm.

¶ 2. In June 2018, the Environmental Division granted VTrans’s application for an Act 250 permit for the project. Vallee and Timberlake Associates, LLP, appealed.1 In August 2019, this Court reversed the issuance of the Act 250 permit and remanded the matter for the Environmental Division to consider whether the project would cause undue water pollution due to increased phosphorus and chloride discharges. In re Diverging Diamond Interchange SW Permit, 2019 VT 57, ¶ 1, __Vt. __, 218 A.3d 564. The Environmental Division held a three-day trial considering these questions. In April 2020, the court issued the decision on appeal, in which it concluded that the project would not cause undue water pollution and granted VTrans’s application for the Act 250 permit.

¶ 3. In its decision, the Environmental Division found the following facts, which are undisputed. The project involves a proposed diverging diamond interchange at Exit 16 off I-89 in Colchester and related construction on U.S. Route 2/7. The project will increase the impervious surface by 1.2 acres and will increase the roadway by 0.38 lane miles.2 Of the 0.38 new lane miles, VTrans owns and is responsible for winter maintenance of 0.29 lane miles and the Town of Colchester owns and is responsible for maintenance of 0.09 lane miles. The project area discharges stormwater runoff to Sunnyside Brook, which ultimately flows to Lake Champlain. Stormwater runoff contains phosphorus and chloride, among other constituents. Currently, there is no permitted stormwater treatment system in the project area. The project will install a stormwater treatment system. The Vermont Department of Environmental Conservation (DEC) issued a stormwater discharge permit for the project to address new discharges.

¶ 4. Because the project increases impervious surface, it will increase the discharge of phosphorus into Sunnyside Brook and, ultimately, to Lake Champlain. VTrans plans to treat the

1 Timberlake Associates, LLP did not participate in this appeal.

2 According to Vallee, a “lane mile” is a term of art. One lane mile is equal to one mile, or 5,280 feet, of roadway with a width of approximately eleven feet.

phosphorus discharges through grass channels, which it estimates will remove approximately forty percent of phosphorus from stormwater runoff.

¶ 5. Sunnyside Brook is not currently listed as impaired for phosphorus. Lake Champlain, however, is currently listed as impaired for phosphorus. In total, the main lake segment of Lake Champlain receives about 359,000 pounds of phosphorus each year. In 2016, the United States Environmental Protection Agency (EPA) adopted a Total Maximum Daily Load (TMDL) for phosphorus entering Lake Champlain. A TMDL creates a “pollution budget” that calculates how much pollution a water body can manage while maintaining appropriate water quality standards. The Lake Champlain phosphorus TMDL does not prohibit future development or discharges, but it does require “developed land” to reduce discharges in a manner that offsets future growth. The State of Vermont has adopted an Implementation Plan to comply with the phosphorus TMDL. While neither regulation binds the project, the Environmental Division acknowledged that they “provide helpful context on Vermont’s approach to phosphorus pollution, and guidance on [the Vermont Agency of Natural Resources’] current policies and priorities.”

¶ 6. The project will also cause an increased discharge of chloride into Sunnyside Brook. Both VTrans and the Town of Colchester use chloride as part of routine winter maintenance to remove snow and ice from the roadways. Once applied to the roads, chloride is discharged into waterways as a part of stormwater runoff. Chloride cannot be removed from stormwater.

¶ 7. Sunnyside Brook is currently listed as impaired for chloride. The 2011 Vermont Water Quality Standards do not specifically address chloride. There is no chloride TMDL in effect for the Sunnyside Brook watershed, although the DEC is currently preparing one. In 2014, Vermont adopted two chloride standards set by the EPA. The acute standard, at 860 mg/L, is the highest concentration of chloride to which aquatic life can be exposed for a short period—usually one hour, once every three years—without deleterious results. The chronic standard, at 230 mg/L,

is the highest concentration of chloride to which aquatic life can be exposed for an extended period—usually four days, once every three years—without deleterious effects.

¶ 8. In its analysis, the Environmental Division first considered whether the project would cause undue phosphorus pollution in Lake Champlain. It defined “undue” to mean “more than necessary—exceeding what is appropriate or normal.” The court found that the project complied with all applicable regulations, weighing in favor of compliance with Criterion 1.

¶ 9. The court next determined that the project would create an “exceedingly small amount” of additional phosphorus pollution when compared to the total amount of phosphorus discharged into Lake Champlain on a yearly basis. In making this determination, the court acknowledged conflicting testimony by VTrans’s and Vallee’s experts as to the amount of additional phosphorus discharge created by the project. Based on their different projections, VTrans’s expert calculated that the project would increase phosphorus discharge by 0.11 pounds per year, while Vallee’s expert found that the project would increase phosphorus discharge by 1.62 pounds per year. While the court “found both experts credible,” it held that Vallee’s expert failed to refute VTrans’s claim that his estimate was overinclusive or explain why VTrans’s method was inaccurate. However, it concluded that under either estimate, the likely amount of additional phosphorus pollution was extremely small. The court agreed that Criterion 1 contains no “automatic allowance for de minimis water pollution,” but noted that the “amount of the pollution” was an important factor, and here the amount of pollution was small. The court thus found this factor weighed in favor of compliance with Criterion 1.

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In re Diverging Diamond Interchange Act 250 (R.L. Vallee, Inc.), 2020 VT 98, 247 A.3d 499 (Vt. 2020).

2020 VT 98 (In re Diverging Diamond Interchange Act 250 (R.L. Vallee, Inc.)) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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