James City County v. SCC ( 2015 )


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  • PRESENT: Lemons, C.J., Millette, Mims, McClanahan, and Powell,
    JJ., and Russell and Koontz, S.JJ.
    BASF CORPORATION
    v.   Record Nos. 140462, 141009 & 141201
    STATE CORPORATION COMMISSION, ET AL.
    OPINION
    JUSTICE LEROY F. MILLETTE, JR.
    JAMES CITY COUNTY, ET AL.                 April 16, 2015
    v.   Record Nos. 140470 & 141010
    STATE CORPORATION COMMISSION, ET AL.
    FROM THE STATE CORPORATION COMMISSION
    These consolidated appeals of right by James City County,
    Save the James Alliance Trust, and James River Association
    (collectively, "JCC"), and BASF Corporation ("BASF") arise from
    proceedings before the State Corporation Commission (the
    "Commission").
    By an initial Certificate Order and an Amending Order, the
    Commission issued to Virginia Electric and Power Company d/b/a
    Dominion Virginia Power ("Dominion") certificates of public
    convenience and necessity ("CPCNs") authorizing the construction
    of electric transmission facilities (the "Project").     BASF
    challenges the approval of the transmission line's route across
    a sensitive environmental remediation site on its property along
    the James River.    JCC challenges the approval of two main
    features of the Project: a new 500 kilovolt ("kV") overhead
    transmission line that will cross the James River and an
    associated switching station that will be located in James City
    County.   JCC argues that the switching station is a not a
    "transmission line" under Code § 56-46.1(F), and therefore
    subject to local zoning ordinances.
    We conclude that the Commission did not err in its
    construction or application of Code § 56-46.1's requirements
    that Dominion "reasonably minimize adverse impact on scenic
    assets, historic districts, and environment of the area
    concerned," and that the record is not without evidence to
    support its findings.   We hold, however, that the Commission did
    err in concluding that a switching station is a "transmission
    line" under Code § 56-46.1(F).    We will therefore affirm the
    orders as to appellant BASF, and affirm in part, reverse in
    part, and remand as to the JCC appellants.
    I.   PROCEEDINGS
    In 2012, Dominion filed an application with the Commission
    seeking the issuance of the CPCNs under Code § 56-265.2 of the
    Virginia Utility Facilities Act, and approval under Code § 56-
    46.1, to construct the Project.
    Code § 56-265.2(A) provides that "[i]t shall be unlawful
    for any public utility to construct . . . facilities for use in
    public utility service . . . without first having obtained a
    certificate from the Commission that the public convenience and
    necessity require the exercise of such right or privilege."
    2
    This provision also requires compliance with the provisions of
    Code § 56-46.1 for the issuance of a certificate to construct
    overhead transmission lines of 138 kV or more.
    Code § 56-46.1 directs the Commission to consider several
    factors when reviewing the utility company's application for the
    certificate.    As relevant here, subsection (A) of the statute
    provides:    "Whenever the Commission is required to approve the
    construction of any electrical utility facility, it shall give
    consideration to the effect of that facility on the environment
    and establish such conditions as may be desirable or necessary
    to minimize adverse environmental impact."    Code § 56-46.1(A).
    Here, the term "'environmental' shall be deemed to include in
    meaning 'historic.'"    Code § 56-46.1(D).   Subsection (A) also
    directs that "the Commission (a) shall consider the effect of
    the proposed facility on economic development within the
    Commonwealth . . . and (b) shall consider any improvements in
    service reliability that may result from the construction of
    such facility."    Code § 56-46.1(A).
    Subsection (B) of Code § 56-46.1 then provides, in relevant
    part:    "As a condition to approval the Commission shall
    determine that the [proposed transmission] line is needed and
    that the corridor or route the line is to follow will reasonably
    minimize adverse impact on the scenic assets, historic districts
    and environment of the area concerned."
    3
    Dominion's application addressed the need for the Project
    and described its proposed features.    Dominion represented that
    the construction of this additional transmission capacity was
    needed to assure continued reliable electric service to its
    customers in the North Hampton Roads Area. 1   The Project,
    according to Dominion, was the best means for meeting this need
    while "reasonably minimiz[ing] adverse impact on the scenic
    assets, historic districts and environment of the area
    concerned," as required by Code § 56-46.1(B).
    The Commission undertook an investigation, received public
    comments and assigned a Hearing Examiner to conduct the
    proceedings and issue a report on Dominion's application.     Two
    days of public witness hearings were then conducted, followed by
    a nine-day long evidentiary hearing for the purpose of receiving
    evidence offered by Dominion, respondents, including JCC and
    BASF, and the Commission's staff.   Following its receipt of the
    Hearing Examiner's report, the Commission issued the first of
    the orders challenged in this appeal.
    1
    The North Hampton Roads Area, as referred to in this case,
    includes the following 14 counties and 7 cities: the counties of
    Charles City, James City, York, Essex, King William, King and
    Queen, Middlesex, Mathews, Gloucester, King George,
    Westmoreland, Northumberland, Richmond, and Lancaster, and the
    cities of Williamsburg, Yorktown, Newport News, Poquoson,
    Hampton, West Point, and Colonial Beach.
    4
    A. Evidentiary Hearing
    The record below is extensive, but included the following
    basic facts.
    Under federal law, Dominion must comply with North American
    Electric Reliability Corporation ("NERC") standards, which have
    been adopted by the Federal Energy Regulatory Commission
    ("FERC").    See Piedmont Envtl. Council v. Virginia Elec. & Power
    Co., 
    278 Va. 553
    , 559-60, 
    684 S.E.2d 805
    , 808 (2009) (explaining
    federal regulation of public utilities like Dominion that
    operate "bulk electric transmission systems").    Dominion
    presented evidence that, in order to monitor whether its
    electric transmission system is in compliance with NERC
    reliability standards, Dominion continually assesses the
    system's future reliability using load flow modeling studies.
    Based on the load flow modeling evidence in this case, previous
    studies had indicated that normal load growth in the North
    Hampton Roads Area would result in NERC reliability violations
    by 2019.    However, in order to comply with new regulations,
    Dominion determined that six of its local coal-fired generation
    units (two at the Yorktown Power Plant and four at the
    Chesapeake Power Plant) would need to be shut down.    According
    to Dominion, the retirement of just one unit at Yorktown was
    enough to cause reliability violations to begin in the summer of
    2015.
    5
    To meet the above-stated need, Dominion proposed in its
    application for the CPCNs that the Project include the
    construction of (1) approximately seven to eight miles
    (depending upon the specific route across the James River) of a
    new 500 kV overhead transmission line (the "Surry-Skiffes Creek
    Line"), (2) approximately 20 miles of a new 230 kV overhead
    transmission line (the "Skiffes Creek-Whealton Line"), and (3) a
    new switching station required to interconnect the 500 kV line
    to the 230 kV line (the "Skiffes Creek Switching Station"). 2
    Dominion's application, at issue in today's appeal,
    presented the Surry-Skiffes Creek Line over the James River and
    onto BASF's property, with several "Variations" as to the exact
    route crossing the James River.   As an alternative to the Surry-
    Skiffes Creek Line, Dominion also offered for the Commission's
    consideration a different route extending 38 miles from
    2
    The 500 kV Surry-Skiffes Creek Line would begin on Hog
    Island at Dominion's existing Surry Switching Station near the
    Surry Nuclear Power Station in Surry County and extend to the
    south shore of the James River. The line would then cross the
    James River and come ashore on BASF's property in a dormant
    industrial area at one of two locations. The line would proceed
    through BASF's property and beyond to the Skiffes Creek
    Switching Station to be constructed on property owned by
    Dominion in James City County, through which several
    transmission lines currently cross. The 230 kV Skiffes Creek-
    Whealton Line would then proceed for approximately 20 miles
    along an existing Dominion right-of-way from the Skiffes Creek
    Switching Station to the existing Whealton Substation located in
    the City of Hampton.
    6
    Dominion's existing Chickahominy Substation in Charles City
    County to the new Skiffes Creek Switching Station in James City
    County (the "Chickahominy-Skiffes Creek Line").   However,
    Dominion preferred the Surry-Skiffes Creek Line for the Project
    based on significant differences as to adverse impact and cost:
    the Chickahominy-Skiffes Creek Line would pass in close
    proximity to more residences than the Surry-Skiffes Creek Line.
    Dominion also stated that, because approximately 25 miles of the
    right-of-way is unimproved, the Chickahominy-Skiffes Creek Line
    "crosses significantly more forested land, open marshland,
    wetland and perennial waterbodies and will require much more
    forest land to be cleared and forested wetlands to be converted
    to scrub shrub community."   In addition, Dominion's estimated
    cost of the Chickahominy-Skiffes Creek Line was more than $50
    million above the estimated cost of the Surry-Skiffes Creek
    Line. 3
    Under Code § 56-46.1, as part of the evaluation process,
    the Hearing Examiner and then Commission must determine whether
    new Projects "reasonably minimize adverse impact on the scenic
    assets, historic districts and environment of the area
    concerned."   Code § 56-46.1(B).   Both BASF and JCC presented
    3
    The estimated total cost of the Project is approximately
    $151 to $155 million dollars using the Surry-Skiffes Creek Line,
    compared to $213 million using the Chickahominy-Skiffes Creek
    Line.
    7
    evidence of adverse impacts caused by the proposed Surry-Skiffes
    Creek Line.
    The BASF property is a former manufacturing site undergoing
    active remediation subject to both Environmental Protection
    Agency ("EPA") and Department of Environmental Quality ("DEQ")
    corrective action.   Dominion's preferred route of the Surry-
    Skiffes Creek line ("Variation 1") crosses the middle of BASF's
    property, the most sensitive area of environmental remediation,
    containing zinc contaminants.   This area is identified as Area
    4C.   The plans underway to remediate Area 4C contain three main
    mitigation measures: a capped landfill, a bio-barrier trench,
    and a phytoremediation plot of poplar trees.   BASF offered
    expert testimony that a transmission tower in this area would
    interfere with the bio-barrier, that the transmission line will
    render the phytoremediation plot ineffective, and that Variation
    1 would generally threaten and delay successful remediation.
    BASF's position was that, if the Surry-Skiffes Creek line
    was selected, the route identified as Variation 4 was its
    preferred route.    Variation 4 crosses the northern boundary of
    the property (approximately one half-mile north of Variation 1)
    and thereby avoids Area 4C.    In order for Variation 4 to be
    viable, the James City County Economic Development Authority
    (the "EDA") would have to agree to provide Dominion a right-of-
    8
    way easement, as Dominion determined that it does not have the
    authority to exercise eminent domain over the property.
    BASF has already spent over $15 million dollars in the
    process of remediating the property and preparing it for
    redevelopment.   BASF presented testimony that Variation 1 could
    delay remediation efforts and result in BASF failing to meet
    its EPA-mandated remediation deadline in 2020, thereby
    resulting in treble damages.   Further, according to BASF
    witnesses, a transmission line bisecting the property
    substantially damages prospects for future development of the
    property.
    In addressing the issue of scenic and historic
    preservation, JCC presented expert testimony that any overhead
    transmission line would disrupt scenic vistas and historic
    landmarks, and expressed its desire for an underground
    transmission line.   As the experts observed, the Surry-Skiffes
    Creek Line would be located in the vicinity of the Historic
    Triangle of Jamestown, Yorktown and Williamsburg.   According to
    the experts, a portion of the overhead line would be visible
    from the Colonial National Historic Parkway.   The line would be
    most visible from Carter's Grove, a mid-eighteenth century
    dwelling and a National Historic Landmark located on the north
    shore of the James River, where the line would be located
    between one-half mile to one mile south of Carter's Grove,
    9
    depending upon the line's route across the James River.    As for
    the James River itself, according to the experts, the line would
    pass within a portion of the river that has been designated by
    Code § 10.1-419 as a "[H]istoric [R]iver," and would be visible
    from the Captain John Smith National Historic Water Trail.    JCC
    presented testimony that these sites have received state and
    national recognition on historic registers and should be free
    from such visual intrusion.   JCC further presented testimony
    that the historical, cultural, and ecological importance of the
    area would be impacted by an overhead transmission line, and the
    Project could potentially damage the ongoing attempt to have the
    area designated as a World Heritage Site.
    Dominion countered with its own experts, who argued that
    while these adverse impacts do exist, they could be reasonably
    minimized.   The specific responses of these experts are
    addressed in Parts IV.B. and V.B., infra, where we analyze the
    evidentiary issues under Code § 56-46.1.
    B. Hearing Examiner's Report
    In August 2013, the Commission's Hearing Examiner issued a
    178 page report that summarized the extensive record, analyzed
    the evidence and issues, and made numerous findings and
    recommendations for the Commission's consideration.   As relevant
    here, after finding a need to upgrade Dominion's electric
    10
    system, the Hearing Examiner's express findings and
    recommendations included the following:
    •   The [p]roposed Project is the least cost[ly] viable
    alternative for addressing the identified NERC
    reliability violations presented in this case, can
    be constructed in a timely manner, and is the best
    alternative in this case;[ 4]
    •   The [p]roposed Project's overhead crossing of the
    James River will have a limited visual impact on
    one section of the Colonial Parkway and a very
    limited impact on a small portion of Jamestown
    Island. Overall, the [p]roposed Project will
    reasonably minimize the adverse impacts on the
    scenic assets, historic districts, and
    environments;
    •   The route crossing the James River should follow
    James River Crossing Variation 4 on the condition
    that the [EDA] and Dominion . . . conclude a right-
    of-way agreement within three weeks of the
    Commission's final order. If such an agreement is
    not [so] concluded . . . then the route crossing
    the James River should be James River Crossing
    Variation 1;
    •   The Commission may or may not decide to address
    whether Skiffes Creek Switching Station is a
    "transmission line" for purposes of [Code] § 56-
    46.1[(F).]
    4
    In this regard, the Hearing Examiner found that "[t]he
    [Chickahominy] [a]lternative [p]roject is a viable alternative,
    is electrically equivalent to the [p]roposed Project and can be
    constructed in a timely manner. However, the [Chickahominy]
    [a]lternative [p]roject has a higher cost than the [p]roposed
    Project and will have a greater impact on scenic assets,
    historic districts and the environment." The Hearing Examiner
    also found that "[a]dditional generation . . . resolve[s] the
    identified NERC reliability violations, but at a significantly
    higher price and at a greater risk of failing to be completed by
    the date needed."
    11
    The Hearing Examiner therefore recommended that the Commission
    adopt the findings of the Report and grant the Application
    subject to the recommendations in the report.
    C.   Commission's Certificate Order
    Based on its review of the record and the Hearing
    Examiner's findings and recommendations, the Commission issued
    the November 26, 2013 order (the "Certificate Order") granting
    the CPCNs to Dominion.   After evaluating numerous alternatives
    offered for its consideration, the Commission found that "[t]he
    engineering evidence in this case is overwhelming" in
    establishing that the construction of an overhead 500 kV
    transmission line is the best way to address the needed upgrade
    to Dominion's electric system.   The Commission then compared
    Dominion's two alternative 500 kV proposals: the Surry-Skiffes
    Creek Line and the Chickahominy-Skiffes Creek Line.    The
    Commission concluded that the record supported the Hearing
    Examiner's findings that the Surry-Skiffes Creek Line "'is the
    least cost[ly] viable alternative for addressing the identified
    NERC reliability violations presented in this case, can be
    constructed in a timely manner, and is the best alternative in
    this case.'"   Further, the Commission cited and agreed with the
    Hearing Examiner's finding that the proposed Project "reasonably
    minimize[ the] adverse impact on the scenic assets, historic
    12
    districts[,] and environment [in] the area concerned" in
    accordance with Code § 56-46.1(B).
    The Commission also agreed with the Hearing Examiner's
    recommended approval of Variation 4 as the route for the Surry-
    Skiffes Creek Line.    The Commission found that "the
    environmental and economic development considerations in
    particular" favored Variation 4 over Variation 1.    The
    Commission declined, however, to adopt the Hearing Examiner's
    recommendation for the contingency approval of Variation 1,
    should Dominion's negotiations with the EDA over the right-of-
    way prove fruitless.    The Commission indicated that it fully
    expected Dominion and the EDA to complete the negotiations
    necessary for Variation 4.
    As to whether the construction of the Skiffes Creek
    Switching Station is subject to James City County's zoning
    ordinances, the Commission addressed the issue and concluded
    that the switching station constitutes a "transmission line" for
    purposes of Code § 56-46.1(F), and is thus exempt from the
    zoning ordinances.    "From an engineering standpoint . . . the
    Skiffes Creek Switching Station will be an electrically,
    physically, and operationally inseparable part of several high
    voltage transmission lines," the Commission explained.     The
    Commission reasoned, "[t]he Skiffes Creek Switching Station
    enables a number of transmission circuits to be completed and
    13
    connected through transformers and other associated equipment."
    The Commission thus concluded that the transmission line CPCNs
    would include the Skiffes Creek Switching Station.
    Accordingly, in the Certificate Order, the Commission
    approved the Project for the construction of the 500 kV Surry-
    Skiffes Creek Line with Variation 4, the Skiffes Creek Switching
    Station and the 230 kV Skiffes Creek-Whealton Line.
    D.   Commission's Amending Order
    Dominion was, ultimately, unsuccessful in negotiating a
    right-of-way with the EDA, and thus could not comply with this
    condition of the Certificate Order.   Dominion sought to amend
    the Certificate Order as Variation 4 was no longer viable.    The
    Hearing Examiner conducted a second evidentiary hearing to
    determine if a portion of the approved route for the Surry-
    Skiffes Creek Line must be modified in order to allow the
    Project to be constructed.   While continuing to prefer Variation
    1, Dominion proposed in the alternative that the Commission
    approve a limited adjustment to Variation 4, identified as
    Variation 4.1.   This route would bypass the EDA property but
    would require Dominion to obtain new right-of-way easements from
    other affected landowners.   BASF recommended a similar
    adjustment, identified as Variation 4.2, and continued to oppose
    Variation 1.   For reasons unrelated to the environmental
    dispute, pertaining most prominently to the grade of the land,
    14
    it became apparent that Variation 4.2 was inappropriate, and
    BASF altered its position to favor Variation 4.1 as between the
    remaining options under consideration.   After concluding
    Dominion was not able to implement Variation 4, the Hearing
    Examiner "found advantages and disadvantages to Variations 1 and
    4.1, and recommended Variation 4.1."
    Upon its review, the Commission instead found that
    Variation 1 had "become the best variation to satisfy the Code." 5
    The Commission approved Variation 1 based on the risk that
    construction of the Project would not be completed in time to
    address the NERC violations if it approved one of the adjusted
    variations to Variation 4.   The Commission found, among other
    factors, that approval of one of the adjusted variations could
    result in significantly delaying the U.S. Army Corps of
    Engineers' Project review, which had to be completed before
    Dominion could begin construction.
    Having previously approved Variation 4, the Commission
    noted that "Variation 1 will impact certain properties
    differently than Variation 4."   However, the Commission found
    that "Variation 1 allows Dominion to: (1) reasonably minimize
    5
    The Commission noted that in the Certificate Order it had
    agreed with the Hearing Examiner's analysis of the various James
    River crossing variations and findings that "the [c]ertificated
    Project, regardless of which variation for the Surry-Skiffes
    Creek Line is used, reasonably minimizes the adverse impacts on
    the scenic assets, historic districts, and environment and
    otherwise satisfies the Code."
    15
    adverse environmental impacts, including impacts to historic
    resources and scenic assets; (2) cross the James River with less
    visual impact to Carter's Grove . . . among other properties in
    the area; (3) bypass the EDA property that has obstructed
    Variation 4; and (4) address significant reliability risks to
    the North Hampton Roads Area in a timely manner."   By order
    dated February 28, 2014 (the "Amending Order"), the Commission
    amended the Certificate Order by authorizing Dominion to
    construct the Project using Variation 1.   On April 10, 2014, the
    Commission entered an additional order denying BASF's petition
    for reconsideration of the Amending Order.
    II. MOTION TO DISMISS
    Both BASF and JCC appeal from the Certificate Order and the
    Amending Order, with BASF additionally appealing from the
    Commission's order denying BASF's motion for reconsideration of
    the Amending Order.
    As a preliminary procedural matter, Dominion has filed a
    motion to dismiss the JCC and BASF appeals challenging the
    Certificate Order based on Dominion's interpretation of Rule
    5:21, which governs appeals from the Commission.    Dominion urges
    the Court to dismiss BASF's appeal as to the Certificate Order
    and JCC's appeal in its entirety on the ground that we lack
    16
    jurisdiction under Rule 5:21(a). 6   Dominion argues that it alone
    filed a notice of appeal of the Certificate Order under Rule
    5:21(a)(3); JCC and BASF merely filed notices of participation
    under 5:21(a)(6).   Because Dominion decided not to proceed with
    its appeal, it reasons that the jurisdictional basis for the
    appeals of all parties pertaining to the Certificate Order has
    evaporated.
    Dominion originally filed a notice of appeal from the
    Certificate Order, pursuant to Rule 5:21(a)(3), because Dominion
    had not been awarded its preferred route.    JCC and BASF
    subsequently filed notices of participation pursuant to Rule
    5:21(a)(6).   When the Commission then issued the Amending Order,
    moving the route to Variation 1, Dominion determined that it
    would not file a petition for appeal from the Certificate Order.
    However, JCC and BASF proceeded to file petitions for appeal
    from the Certificate Order, pursuant to Rule 5:21(a)(7).
    Dominion argues that because it was the only party to file a
    notice of appeal from the Certificate Order, the petitions for
    appeal filed by JCC and BASF from that same order "were mooted"
    when Dominion did not pursue its petition for appeal, as "there
    6
    The motion to dismiss pertains directly to the appeals
    arising out of the Certificate Order, Record Numbers 140470 and
    140462. Dominion also argues that, if granted, the motion would
    render moot all issues not specifically relating to BASF's
    Variation dispute arising from the Amending Order.
    17
    was no [Dominion] appeal in which they could participate."    We
    disagree.
    "[B]oth the rules of this Court and of the Commission are
    liberally applied and construed to the end that all parties
    having an interest in any matter in controversy before the
    Commission be permitted to intervene and to appeal."    Blue Cross
    of Virginia v. Commonwealth, 
    218 Va. 589
    , 597, 
    239 S.E.2d 94
    , 98
    (1977).
    Rule 5:21(a)(6) expressly provides, in relevant part, that
    "each party who has not filed a notice of appeal and who intends
    to participate in the appeal shall file in the office of the
    clerk of the Commission and shall mail to every other party a
    notice that he intends to participate as an appellant . . . .
    Every party who seeks reversal or modification of the order
    appealed from shall be deemed an appellant . . . ."    JCC and
    BASF were thus deemed appellants under the Rule in their
    challenge to the Certificate Order, and the Rule contains no
    provision for terminating that status by virtue of the party
    that filed the notice of appeal opting to no longer pursue it.
    The Rule does not state that jurisdiction ceases should the
    party that originally noticed the appeal fail to proceed at some
    juncture in the future.   We thus find it appropriate to reach
    the merits of the case.
    18
    III.   STANDARDS OF REVIEW
    We are guided by well-settled principles in our review of
    the Commission's decision.     The Constitution of Virginia and
    statutes enacted by the General Assembly give the Commission
    "'broad, general and extensive powers'" in regulating public
    utilities.   Office of Attorney Gen. v. State Corp. Comm'n, __
    Va. __, __, 
    762 S.E.2d 774
    , 778 (2014) (quoting Virginia Elec. &
    Power Co. v. State Corp. Comm'n, 
    284 Va. 726
    , 735, 
    735 S.E.2d 684
    , 688 (2012)).   This authority influences our standards of
    review in this case.
    In considering evidentiary findings of the Commission, this
    Court is bound to a highly deferential standard.    "The
    Commission is charged with the responsibility of finding the
    facts and making a judgment," Appalachian Voices v. State Corp.
    Comm'n, 
    277 Va. 509
    , 516, 
    675 S.E.2d 458
    , 461 (2009) (quoting
    Northern Virginia Elec. Coop. v. Virginia Elec. & Power Co., 
    265 Va. 363
    , 368, 
    576 S.E.2d 741
    , 743-44 (2003)), and its decision
    comes to this Court with "'a presumption of correctness.'"
    Office of Attorney Gen., __ Va. at __, 762 S.E.2d at 778
    (quoting Appalachian Power Co. v. State Corp. Comm'n, 
    284 Va. 695
    , 703, 
    733 S.E.2d 250
    , 254 (2012)).     This means "[w]e will
    not substitute our judgment in matters within the province of
    the Commission and will not overrule the Commission's findings
    of fact unless they are contrary to the evidence or without
    19
    evidentiary support."   Level 3 Commc'ns of Va., Inc. v. State
    Corp. Comm'n, 
    268 Va. 471
    , 474, 
    604 S.E.2d 71
    , 72 (2004) (citing
    Virginia Gas Distrib. Corp. v. Washington Gas Light Co. 
    201 Va. 370
    , 375, 
    111 S.E.2d 439
    , 443 (1959)).
    This Court reviews matters of law de novo.   Syed v. ZH
    Techs., Inc., 
    280 Va. 58
    , 69, 
    694 S.E.2d 625
    , 631 (2010).
    However, "the Commission's decision is entitled to the respect
    due judgments of a tribunal informed by experience, and we will
    not disturb the Commission's analysis when it is 'based upon the
    application of correct principles of law." Appalachian 
    Voices, 277 Va. at 516
    , 675 S.E.2d at 461 (internal quotation marks
    omitted).   Keeping these principles in mind, we proceed to the
    merits.
    IV.   BASF'S APPEAL
    In BASF's three assignments of error, BASF asserts, first,
    that the Commission erred as a matter of law in finding
    Variation 1 reasonably minimizes adverse impacts under Code
    § 56-46.1(B) based merely on the unavailability of Variation 4.
    BASF further argues that the Commission erred as a matter of law
    in determining whether Code § 56-46.1 was satisfied by weighing
    of the transmission system reliability concerns together with
    the adverse impacts, instead of as separate processes.    Next,
    BASF contends the Commission erred in approving Variation 1,
    both by wrongly finding that Variation 1 reasonably minimizes
    20
    the adverse environmental impact to Area 4C, and by disregarding
    Variation 1's destruction of the property's development
    potential.   Finally, BASF argues that the Commission erred in
    rejecting the Hearing Examiner's recommendation in favor of
    Variation 4.1 because it is the only available route that
    reasonably minimizes adverse impacts.
    A. Construction of Code § 56-46.1(B)
    BASF's first assignment of error argues that the Commission
    erred as a matter of law in approving Variation 1 in two ways.
    As matters of law, the Court reviews these questions de novo.
    
    Syed, 280 Va. at 69
    , 694 S.E.2d at 631.
    1. Action by "Default"
    First, BASF contends the Commission chose Variation 1 in
    the Amending Order simply because it determined that Variation 4
    was unavailable due to the EDA's failure to provide the
    necessary easement.   In doing so, the Commission, according to
    BASF, arrived at Variation 1 by default.   BASF argues that the
    Commission stated that it met the requirements of the statute in
    a conclusory manner and failed to rely on any actual analysis to
    determine whether Variation 1 would in fact reasonably minimize
    the adverse impacts as required under Code § 56-46.1(B).
    The statute requires that the Commission "determine" that
    the variation reasonably minimizes adverse impacts. Code § 56-
    46.1(B).   In the context of this statute, the Court has
    21
    previously quoted Webster's New International Dictionary to
    define "determine" as "to fix conclusively or
    authoritatively . . . to settle a question or controversy about
    . . . to come to a decision concerning as the result of the
    investigation or reasoning . . . to settle or decide by choice
    of alternatives or possibilities."   Board of Supervisors v.
    Appalachian Power Co., 
    216 Va. 93
    , 103, 
    215 S.E.2d 918
    , 925
    (1975) (emphasis added).
    Had the Amending Order provided merely a conclusory
    recitation of the statutory language, absent investigation or
    reasoning, BASF would undoubtedly have grounds for complaint.
    This, however, is not the record before us.   The Amending Order
    includes factors considered by the Hearing Examiner in comparing
    Variation 1 to Variation 4.1, not Variation 4, indicating that
    the Commission indeed undertook a comparison between Variation 1
    and the new route.   The Commission expressly considered many of
    the same factors enumerated by the Hearing Examiner:
    [T]he Commission agrees . . . that Variation 1 will have
    less visual impact than Variation 4.1 on certain historic
    resources, including Carter's Grove. . . . Variation 1
    would be located farther than Variations 4.1 and 4.2 from
    Carter's Grove and from other, more distant historic
    resources. On the other hand, an environmental advantage
    of Variations 4.1 and 4.2 is that these variations avoid
    certain environmental remediation areas on the BASF
    property which Variation 1 would cross.
    The Commission ultimately weighed these competing claims
    differently than the Hearing Examiner, granting visual impact
    22
    and construction schedule more relative weight.    This is not
    error as a matter of law, however.   The Commission clearly
    engaged in reasoning on the record evaluating relevant factors,
    and concluded that "[b]ased on the record, the Commission finds
    that the Certificated Project using Variation 1 would reasonably
    minimize adverse impact to the scenic assets, historic
    districts, and environment of the project area."
    2. Process of Weighing Adverse Impact
    Next, BASF argues that the Commission erred as a matter of
    law by weighing the need to upgrade Dominion's transmission
    system against the adverse impacts of Variation 1.   According to
    BASF, the statute requires the Commission to both establish need
    and reasonably minimize adverse impacts, and by considering need
    and the Project's construction schedule as a part of the impact
    analysis, the Commission is accomplishing only the former.
    "When construing a statute, our primary objective is to
    ascertain and give effect to legislative intent, as expressed by
    the language used in the statute."   Cuccinelli v. Rector &
    Visitors of the Univ. of Va., 
    283 Va. 420
    , 425, 
    722 S.E.2d 626
    ,
    629 (2012) (internal quotation marks and citation omitted)
    (emphasis added).   Code § 56-46.1 does not state the factors to
    be considered in addressing the listed adverse impacts and does
    not indicate whether these two tests must be undertaken
    independently of each other.   It merely states that adverse
    23
    impact should be "reasonably minimize[d]."   Something is
    "reasonable" when it is "[f]air, proper, or moderate under the
    circumstances; sensible."   Black's Law Dictionary 1456 (10th ed.
    2014).   The essence of reasonableness under the law is prudent
    action in context; there can be no error in linking a
    reasonability standard to the circumstances at large.
    The Commission, pursuant to Code § 56-46.1(B), determines
    whether a need for the proposed infrastructure exists.     In doing
    so, as explained in the Certificate Order, the Commission must
    assess the magnitude and timing of any such need.   The statute
    specifically calls for "verif[ification of] the applicant's load
    flow modeling, contingency analyses, and reliability needs
    presented to justify the new line and its proposed methods of
    installation," in determining need.   Code § 56-46.1(B).    Added
    to these factors, along with minimizing adverse impacts under
    subsection (B), are the costs of such construction.   See Board
    of 
    Supervisors, 216 Va. at 104
    , 215 S.E.2d at 926 (Commission
    properly considered, among other factors, "economic and
    environmental factors," "reliability of electric service," and
    "engineering feasibility" in approving route for transmission
    line);   Town of Mt. Crawford v. Virginia Elec. and Power Co.,
    
    220 Va. 645
    , 650, 
    261 S.E.2d 311
    , 314 (1980) (affirming
    Commission's rejection of locality's proposed alternative route
    for new transmission line based on evidence showing that, among
    24
    other things, the "deviation would substantially increase the
    cost of the entire line").
    The adverse impacts of a proposed project are not to be
    considered in a vacuum.    When presented with an application for
    transmission line construction, the Commission must "balance"
    adverse impacts along with other "factors" and "traditional
    considerations."    Board of 
    Supervisors, 216 Va. at 100
    , 215
    S.E.2d at 923-24.    Then the Commission, "as a tribunal informed
    by experience," Appalachian 
    Voices, 277 Va. at 516
    , 675 S.E.2d
    at 461 (citation and internal quotation marks omitted), must
    decide within the parameters of the statute what best serves the
    "total public interest."     Board of 
    Supervisors, 216 Va. at 104
    ,
    215 S.E.2d at 926.    We conclude that the use of the word
    "reasonably" demonstrates the General Assembly's recognition of
    the multifactorial balancing that goes into such an
    investigation, and we find that the Commission did not err.
    B. Evidentiary Challenges Under Code § 56-46.1
    BASF's second and third assignments of error are closely
    related, so we will address them together.    BASF challenges the
    evidentiary support for the Commission's choice of Variation 1
    over Variation 4.1.    BASF contends that there is not sufficient
    evidence to support the contention that Variation 1 would
    reasonably minimize environmental impacts of the Surry-Skiffes
    Creek Line; rather, Variation 4.1 is the only alternative that
    25
    would reasonably minimize the adverse environmental impacts by
    traversing the northern boundary of BASF's property.     Variation
    1, according to BASF, would maximize those impacts and destroy
    the property's developmental potential by bisecting the property
    through Area 4C, that is, the portion of the property undergoing
    environmental remediation.   Thus, BASF concludes, the
    Commission's approval of Variation 1 violates Code § 56-46.1(B).
    As this portion of the appeal challenges the evidentiary
    findings of the Commission, we must review the evidence in light
    of our highly deferential standard of review.   We find fault
    with the Commission only if its findings are "contrary to the
    evidence or without evidentiary support."   Level 3 
    Commc'ns, 268 Va. at 474
    , 604 S.E.2d at 72.
    1. Selection of Variation 1
    First, a thorough review of the record shows that it is not
    without evidence to support the Commission's finding that the
    Project, using Variation 1, will reasonably minimize adverse
    impacts as required by the statute.
    The property was previously an industrial operations and
    manufacturing site that caused substantial soil and groundwater
    contamination.   As part of the environmental remediation efforts
    within the former main industrial area known as Area 4C,
    consisting of approximately 30 acres, BASF excavated several
    lagoons and surface impoundments and reinterred the materials
    26
    into a stabilized capped landfill.   To capture additional
    contaminants, BASF has developed plans to construct a permeable
    reactive barrier ("bio-barrier") near the landfill.   BASF is
    also planning the creation of a phytoremediation plot on Area
    4C.   This involves selective plant growth on the property to
    minimize the migration of contaminants by binding them in the
    soil while lowering the water table.
    The dispute over the Project's adverse environmental impact
    to BASF's property centers on the Commission's approval of
    Dominion's construction of a transmission tower in Area 4C for
    the Surry-Skiffe's Creek Line, using Variation 1.   BASF's
    remediation specialist, Vernon Burrows, testified that the
    placement of the tower in Area 4C conflicts with BASF's
    remediation efforts, including the bio-barrier and the
    phytoremediation plot, and would "result in serious
    environmental damage to the BASF property."
    Dominion, on the other hand, presented expert testimony
    indicating that the construction of the tower in Area 4C will
    have minimal environmental impact.   One such witness was Mark
    Allen, a Dominion civil engineer, who is responsible for the
    management of all of the high voltage transmission designs in
    Dominion's system.   This includes assuring that all such designs
    meet established standards for safety and reliability.    Another
    such witness was Cathy Taylor, director of Dominion's Electric
    27
    Environmental Services Department, whose responsibilities
    include oversight of environmental compliance and remediation.
    Allen submitted testimony that the only tower required in
    Area 4C would not be located on the capped landfill.   He also
    stated that the landfill could successfully be spanned by the
    transmission line proposed in Variation 1, such that no
    construction activity would occur on the capped landfill.    In
    contrast to Burrows' statements that the foundations for the
    tower would be installed by "drilled piles," a method that can
    cause displacement of contaminates, Allen and Taylor both
    testified that Dominion would use "pipe pile foundations" that
    would be driven into the ground by vibration, resulting in
    minimal disruption of surrounding soil and migration of
    contaminated groundwater.   Taylor testified that they would work
    with BASF to reconfigure the location of the tower or bio-
    barrier, if necessary, in order that the tower would not
    interfere with the construction and operation of the bio-
    barrier.   Additionally, Taylor stated that there is "more than
    enough space to safely place the tower [and bio-barrier] in
    [Area 4C]."   As to BASF's plan for phytoremediation, while BASF
    will be unable to plant hybrid poplars in the right-of-way area
    as it had planned, Taylor testified that there are numerous
    alternative grasses and small plants that can be used for
    28
    phytoremediation that would be consistent with the mandatory
    standards for transmission line right-of-way maintenance.
    The DEQ, which is overseeing the remediation of Area 4C,
    also submitted an extensive report to the Commission regarding
    the proposed Project, including Variation 1.    The DEQ, however,
    did not indicate in the report that Variation 1 was incompatible
    with BASF's remediation of Area 4C as claimed by BASF.    Rather,
    the DEQ recommended without preference that one of the proposed
    routes for the Surry-Skiffes Creek Line be used, as opposed to
    the route for the alternative Chickahominy-Skiffes Creek Line.
    While vigorously contested, we cannot say that the
    Commission's selection of Variation 1 was without evidence to
    support it.
    2. Rejection of Variation 4.1
    Second, the record was not without evidence to support the
    Commission's rejection of Variation 4.1.
    This is due, in large part, to evidence regarding the
    construction schedule risks associated with Variation 4.1.   This
    evidence was introduced through the testimony of Elizabeth
    Harper, a Dominion siting and permitting specialist for electric
    transmission lines.    According to her testimony, Variation 1 has
    the shorter construction schedule for addressing the urgent need
    to complete the Project.    She stated that there was a greater
    risk with Variation 4.1 that construction of the Project would
    29
    not be completed in time to address the NERC violations.    This
    risk was posed because Variation 4.1 had not yet undergone
    review by the U.S. Army Corps of Engineers, which must be
    completed before Dominion can begin construction on the Project.
    Delay caused by this additional review could then result in
    Dominion having to request an unprecedented fifth-year extension
    from the EPA to delay shutting down certain of its Yorktown coal
    fired units.   Harper stated that "the parameters for obtaining
    such an extension are not fully known."
    Based on this evidence, the Commission found that, "while
    there is no absolute schedule certainty for any route, approval
    of Variation 4.1 . . . would present for customers in the North
    Hampton Roads Area an increased and unreasonable risk, as
    compared to Variation 1, that the [c]ertificated Project would
    not be constructed in time to ensure reliable service to those
    customers."    In light of this record, and in light of the fact
    that, as discussed in Part 
    IV.A.2., supra
    , the Commission was
    permitted to consider the construction schedule in its
    evaluation, we cannot say the Commission's rejection of
    Variation 4.1 was without evidence to support it.
    3. Selection of Variation 1 Despite Adverse Impact
    Finally, the record is not without evidentiary support for
    the Commission's approval of Variation 1 despite any adverse
    effect the route might have on future economic development of
    30
    BASF's property.   Code § 56-46.1(A) expressly requires the
    Commission to consider among the other statutory factors the
    route's effect "on economic development within the
    Commonwealth."   Acting within this statutory authority, the
    Commission considered this factor in the broader context of
    Dominion's customers in the affected region, and found as
    follows:   "The timely construction of Variation 1 and the rest
    of the [c]ertificated Project are necessary to address
    significant reliability risks in the North Hampton Roads Area.
    Customers in these counties and cities include citizens,
    schools, local governments, and businesses that depend on
    reliable power for a variety of needs.   As required by statute,
    we have considered the impact on economic development in the
    Commonwealth and . . . approve Variation 1."    Both as a matter
    of law and as a matter of evidentiary inquiry, the Commission
    did not err by considering the impact of economic development on
    residents of the entire region and not simply to BASF.
    V.   JCC'S APPEAL
    In JCC's three assignments of error, JCC argues, first,
    that the Commission erred as a matter of law in its construction
    and application of Code § 56-46.1(A) and (B) by limiting its
    consideration of routes for the transmission line to those
    proposed by Dominion in its application.     Like BASF, JCC argues
    that the Commission erred as a matter of law by limiting its
    31
    inquiry to a one-step balancing process as opposed to a two-step
    inquiry in which need is first established and that
    reasonableness is evaluated separately from need.    Second, JCC
    contends the Commission erred in finding that the route of the
    Surry-Skiffes Creek Line reasonably minimizes its adverse
    impacts as required under Code § 56-46.1.    Third, JCC argues the
    Commission erred in its construction and application of Code
    § 56-46.1(F) in finding that the Skiffes Creek Switching Station
    is a "transmission line" under this provision and thus exempt
    from local zoning regulations.
    A. Construction of Code § 56-46.1(A) and (B)
    JCC's first assignment of error argues that the Commission
    erred as a matter of law in its interpretation and application
    of subsections (A) and (B) of Code § 56-46.1 when it approved
    the overhead transmission line route.    We review this issue of
    law de novo.    
    Syed, 280 Va. at 68
    , 694 S.E.2d at 631.
    JCC argues that the approval of the overhead transmission
    line's route "essentially ignor[ed] the statute's directive that
    the impacts on historic assets of the Commonwealth be
    minimized."    The Commission did so, JCC contends, by limiting
    its "application of impact minimization" under the statute to a
    choice of routes presented by Dominion in its application for
    the CPCNs.    JCC argues this effectively reduced the Commission's
    two-step mandate to establish need and minimize adverse impacts
    32
    to a "one-step process" by "us[ing] the determination of need to
    override its statutory duty to minimize the adverse impacts of
    the transmission line."
    This argument is fundamentally the same as the argument
    raised by BASF in Part 
    IV.A.2., supra
    .      We do note that JCC also
    invokes Code § 56-46.1(A), which states that "[w]henever the
    Commission is required to approve the construction of any
    electrical utility facility, it shall give consideration to the
    effect of that facility on the environment and establish such
    conditions as may be desirable or necessary to minimize adverse
    environmental impact . . . ."     "Minimize" does not require no
    impact, and the Commission is also required under subsection (A)
    to consider the economic development of the Commonwealth and
    service reliability.     Thus, our analysis from Part 
    IV.A.2., supra
    , is equally applicable here.      For the reasons articulated
    previously, we find no error in the Commission's interpretation
    of the statute.
    B.   Evidentiary Support for Approved Route
    JCC's second assignment of error argues that the Commission
    erroneously found that the approved route for the Surry-Skiffes
    Creek Line reasonably minimizes adverse impacts under Code § 56-
    46.1.    As with BASF's evidentiary challenge, we must review the
    evidence with deference to the findings of the Commission,
    reversing only if the findings are "contrary to the evidence or
    33
    without evidentiary support."   Level 3 
    Commc'ns, 268 Va. at 474
    ,
    604 S.E.2d at 72.
    JCC argues that, based on the testimony of expert
    witnesses, the evidence before the Commission showed
    "overwhelmingly" that the route would have significant negative
    impacts on the historic assets in the Historic Triangle.    JCC
    points specifically to the Colonial Parkway, Jamestown Island,
    the James River, the Captain John Smith National Historic Water
    Trail, and Carter's Grove.   As to Carter's Grove, JCC relies on
    the testimony of expert witnesses who claimed that the impact
    would be "severe" because the current view from this historic
    home is "almost devoid of anything but river, as it was in
    colonial days."   The ultimate opinion from a number of these
    witnesses upon which JCC relies is that there is no way to
    minimize these adverse impacts of the Surry-Skiffes Creek Line's
    James River crossing except to construct the line underground or
    elsewhere.
    Despite this evidence, JCC argues, the Commission accepted
    Dominion's purported treatment of these adverse impacts as
    "insignificant" and therefore determined that "mitigation
    efforts and minimizing conditions were unnecessary."   We
    disagree.    We conclude that the record is not without evidence
    to support the Commission's determination that the selected
    34
    route reasonably minimizes adverse impacts to the above-stated
    resources in the Historic Triangle.
    As discussed in Part 
    IV.A.2., supra
    , "reasonably
    minimiz[ing] adverse impact[s]" involves weighing a multitude of
    factors.   Code § 56-46.1(B) (emphasis added).    In this case, the
    record shows that the Commission considered, in light of these
    factors, numerous alternatives, proposed by not only Dominion,
    but also James City County, BASF, environmental groups, the
    Commission's staff, and the Hearing Examiner.     These
    alternatives included transmission in different locations, lower
    voltage transmission, underground transmission, generation (that
    is, power plant) options, combinations of generation and
    transmission, and demand-side management (for example, lowering
    electric demand by consumers).
    The record reflects that Dominion presented testimony from
    Peter Nedwick, a consulting engineer in electric transmission
    planning strategic initiatives, and Elizabeth Harper, Dominion's
    siting and permitting specialist.     Both testified that Dominion
    considered numerous generation alternatives before proposing the
    500 kV Surry-Skiffes Creek Line.      Both offered testimony that
    the other proposed alternatives were inconclusive, insufficient
    in terms of capacity and time of completion, and/or cost
    prohibitive by comparison.   Of particular significance to this
    appeal is the evidence showing that (a) the inclusion of
    35
    anything less than a 500 kV line as part of a transmission
    solution would provide insufficient voltage for ensuring system
    reliability, and (b) constructing a 500 kV line underground at
    the James River crossing is not viable.
    The parties do not dispute the finding that, as between the
    Surry-Skiffes Creek Line and the Chickahominy-Skiffes Creek
    Line, the evidence supports the Surry-Skiffes Creek Line.      We
    nonetheless note that Harper testified that the Surry-Skiffes
    Creek Line was chosen in large part because of the large degree
    of wetlands and undeveloped land traversed by the Chickahominy-
    Skiffes Creek Line.    By contrast, she stated the area where the
    Surry-Skiffes Creek Line would cross the James River is already
    impacted by more modern developments.
    Dominion presented testimony from Douglas Lake, Technical
    Director of Natural Resource Group, LLC, which prepared
    Dominion's Environmental Routing Study, stating that the
    transmission line would not be visible from Williamsburg,
    Yorktown or most of Jamestown Island, including the Jamestown
    Settlement, the Jamestown Fort and visitor center areas.    Where
    the line would be visible from one location on Jamestown Island
    and one location on the Colonial Parkway, it would be from three
    to six miles away.    Harper further testified and presented
    evidence that the portion of the James River where the line
    would cross already contains modern developments currently
    36
    visible from this part of the river including, among other
    things, the Surry Nuclear Power Plant; Kingsmill, a resort
    community with a marina and a riverfront golf course; the Ghost
    Fleet, a collection of retired naval vessels anchored offshore
    from Fort Eustis; theme park rides; water towers; and a sewage
    treatment plant.   Harper thus concluded that the line would not
    substantially change the character of the James River.
    Harper further testified that, while visible from Carter's
    Grove, Variation 1 is located a mile offshore while Variations 4
    and 4.1 are located approximately 1/2 mile offshore.   Dominion
    thus argues that Variation 1 therefore minimizes adverse impacts
    as to Carter's Grove.
    Considering this record, we cannot say that the Commission
    erred in concluding that the proposed route for the Surry-
    Skiffes Creek Line across the James River reasonably minimizes
    the line's adverse impacts.   As the Commission observed,
    "[p]lacing a project in a particular location involves impacts
    but also avoids impacts associated with a different location."
    Here, the record is not without evidence to support the
    Commission's choice of location for the route in light of all
    competing considerations under the governing legal standards –
    including but not limited to adverse impacts on the scenic
    assets, historic districts and environment of the affected area.
    37
    C. Skiffes Creek Switching Station
    We now turn to JCC's third assignment of error in which it
    contends the Commission erred in its interpretation and
    application of Code § 56-46.1(F).
    Code § 56-46.1(F) states:   "Approval of a transmission line
    pursuant to this section shall be deemed to satisfy the
    requirements of [Code] § 15.2-2232 and local zoning ordinances
    with respect to such transmission line."   The Commission
    construed "transmission line," as used in this provision, to
    include switching stations, so that Code § 56-46.1(F) exempted
    the Skiffes Creek Switching Station from the requirements of
    James City County zoning ordinances.   This was error.
    While it is true that this Court gives "great weight" to
    "the practical construction given to a statute by public
    officials charged with its enforcement," Commonwealth v.
    Appalachian Elec. Power Co., 
    193 Va. 37
    , 45, 
    68 S.E.2d 122
    , 127
    (1951), we are not inextricably bound to that construction.      If
    such a construction is based on a mistake of law, then this
    Court will not hesitate to reverse the decision of the public
    officials charged with the enforcement of the statute.     See
    Virginia Elec. & Power Co. v. State Corp. Comm'n, 
    284 Va. 726
    ,
    736, 
    735 S.E.2d 684
    , 688 (2012).
    This Court has recognized that, in determining whether
    certain structures or uses are exempt from local zoning
    38
    ordinances, there must be a "manifest intention on the part of
    the legislature" to do so.   City of Norfolk v. Tiny House, Inc.,
    
    222 Va. 414
    , 422-23, 
    281 S.E.2d 836
    , 840-41 (1981).
    Although the Commission's position that switching stations
    and transmission lines function together and should be governed
    under the same authority is well-taken, the intention to exempt
    switching stations from local zoning ordinances is not manifest
    within Code § 56-46.1.   Under the plain language of Code § 56-
    46.1(F) the only structures or uses expressly exempt from local
    zoning ordinances are transmission lines.   Thus, because
    switching stations are not expressly exempt under Code § 56-
    46.1(F), the question before this Court is whether the term
    "transmission lines" includes switching stations.
    As stated previously, "[w]hen construing a statute, our
    primary objective is to ascertain and give effect to legislative
    intent, as expressed by the language used in the statute."
    
    Cuccinelli, 283 Va. at 425
    , 722 S.E.2d at 629 (internal
    quotation marks and citation omitted) (emphasis added).     The
    General Assembly's intent "is usually self-evident from the
    statutory language," and we look first to the plain meaning of
    the words used in the statute.   Rutter v. Oakwood Living Ctrs.
    of Va., Inc., 
    282 Va. 4
    , 9, 
    710 S.E.2d 460
    , 462 (2011) (citation
    and internal quotation marks omitted).   Title 56 of the Code of
    Virginia, governing public utilities, does not define the term
    39
    "transmission line" as used in Code § 56-46.1(F).   However,
    determining the meaning of the term "transmission line" does not
    require analysis "[f]rom an engineering standpoint" as the
    Commission argues.    A layperson can identify the plain meaning
    of a transmission line:    the wires used to transmit electric
    current over great distances and the structures necessary to
    physically support those wires.    "Transmission line" does not
    mean "switching station."
    A switching station remains just that:   a station.   A
    switching station is a facility, and thus is distinguishable
    from and more intrusive to its surrounding environment than
    transmission lines.    It is reasonable for such facilities to be
    subject to local zoning, while continuous transmission lines are
    exempt because of the onerous nature of navigating local zoning
    ordinances for all the acreage over which transmission lines
    cross.
    The application itself delineates Project components as
    "lines" and a "station."    The Commission noted that "[t]he
    engineering evidence in this case also demonstrates that no
    'transmission line' . . . will simply end at the property line
    of the Skiffes Creek Switching Station."   The fact that the
    transmission line continues does not by necessity incorporate
    the facility into the transmission line.   The station remains a
    40
    facility, and the plain language of "transmission line" under
    Code § 56-46.1(F) does not encompass a station facility.
    We note the General Assembly has previously employed a
    similar definition.   In 2006, the General Assembly mandated that
    the Joint Legislative Audit and Review Commission ("JLARC"), a
    legislative oversight commission composed of nine members of the
    House of Delegates and five members of the Senate, see Code
    § 30-56, evaluate "the feasibility of undergrounding
    transmission lines in the Commonwealth."   H. J. Res. 100, Va.
    Gen Assem. (Reg. Sess. 2006).   As part of its evaluation, the
    JLARC conducted a comprehensive review of the Code and
    Commission policies with regard to transmission lines.   In its
    subsequent report, the JLARC defined "transmission lines" as
    "the conductors (wires or cables) which carry power at a high
    voltage level from the plants to local substations some distance
    away."   Joint Legislative Audit and Review Comm’n, Report to the
    Governor and General Assembly of Virginia: Evaluation of
    Underground Electric Transmission Lines in Virginia, House Doc.
    No. 87, at 4 (2006), available at
    http://leg2.state.va.us/dls/h&sdocs.nsf/By+Year/HD872006/$file/H
    D87.pdf (last visited March 25, 2015).
    The Commission's rationale for its construction of the
    statute is that a switching station is "an electrically,
    physically, and operationally inseparable part of several high
    41
    voltage transmission lines."   Using this logic, an electrical
    generating facility would likewise be a transmission line for
    the purposes of Code § 56-46.1(F).   Without an electrical
    generating facility, a transmission line would be nonfunctioning
    and incomplete; therefore, according to the Commission's
    holding, the General Assembly also intended to regulate
    electrical generating facilities as transmission lines.    The
    language of the statute makes it clear that this was not the
    General Assembly's intent.
    We also note the ease with which the General Assembly could
    have included substations in Code § 56-46.1(F), as exempt from
    local zoning ordinances, along with transmission lines, had that
    been its intent.   Code § 56-46.1(A) includes "any electrical
    utility facility," whereas Code § 56-46.1(B) addresses only
    "electrical transmission line[s]."   Both terms are contemplated
    under the same statute.
    Here, the plain language of Code § 56-46.1(F) does not
    reflect a manifest intent on the part of the General Assembly to
    exempt switching stations from local zoning ordinances.    The
    Commission therefore committed a mistake of law.   Accordingly,
    we will reverse the decision of the Commission with regard to
    the applicability of Code § 56-46.1(F) to the Skiffes Creek
    Switching Station.
    42
    VI.    CONCLUSION
    The Project under consideration today is not without
    weighty environmental and historical impacts to beloved areas of
    the Commonwealth, as well as pressing power needs to the
    residents of the Commonwealth.    This Court appreciates the
    contributions of all the parties in the lengthy deliberations
    before the Commission and this tribunal.      We make our decision
    with deep respect for the long-held level of deference accorded
    to the Commission, while recognizing our duty to uphold the law
    of the Commonwealth as written.
    For the reasons stated herein, we conclude the Commission
    did not err in finding that Variation 1 reasonably minimizes
    adverse impacts.   We hold, however, that a switching station is
    not a "transmission line" under Code § 56-46.1(F).     Accordingly,
    we will affirm the orders as to appellant BASF, and affirm in
    part, reverse in part, and remand as to the JCC appellants.
    Record Nos. 140462, 141009 & 141201 - Affirmed.
    Record Nos. 140470 & 141010 – Affirmed in part,
    reversed in part, and remanded.
    JUSTICE MIMS, with whom CHIEF JUSTICE LEMONS and JUSTICE
    McCLANAHAN join, concurring in part and dissenting in part.
    I agree with the Court's analysis and conclusions regarding
    Code § 56-46.1(A) and (B), and I join in those portions of the
    opinion.   However, because I conclude that the Commission's
    43
    construction and application of Code § 56-46.1(F) is correct, I
    must respectfully dissent from Part V.C. of the Court's opinion.
    We review the Commission's interpretation of a statute de
    novo.       Appalachian Power Co. v. State Corp. Comm'n, 
    284 Va. 695
    ,
    703, 
    733 S.E.2d 250
    , 254 (2012).         However, "the practical
    construction given by the Commission to a statute it is charged
    with enforcing is entitled to great weight by the courts and in
    doubtful cases will be regarded as decisive."         Piedmont Envtl.
    Council v. Virginia Elec. & Power Co., 
    278 Va. 553
    , 563, 
    684 S.E.2d 805
    , 810 (2009) (internal quotation marks and citations
    omitted).
    The Hearing Examiner began his analysis with the statutory
    text.       See Appalachian Power 
    Co., 284 Va. at 705
    , 733 S.E.2d at
    255 ("In any case involving statutory construction we begin with
    the language of the statute.").      Because the term "transmission
    line" is undefined, the Hearing Examiner turned to previous
    decisions of the Commission, a decision of the Maine Public
    Utilities Commission, the common dictionary definitions of
    "transmission line" and "circuit," and the definition of
    "transmission line" supplied by the North American Electric
    Reliability Corporation ("NERC"). 1       The Hearing Examiner properly
    1
    The Federal Energy Regulatory Commission ("FERC") has
    designated NERC as the Electric Reliability Organization for the
    United States, and the Energy Policy Act of 2005 made NERC's
    44
    considered these sources in reaching the conclusion that the
    term "transmission line" includes facilities such as the Skiffes
    Creek Switching Station.
    Similarly, the Commission observed that the Code does not
    define "transmission line."   After reviewing the parties'
    arguments, and noting the Hearing Examiner's "substantial
    analysis," the Commission then relied on its expertise in such
    matters to observe that the "Skiffes Creek Switching Station
    will be an electrically, physically, and operationally
    inseparable part" of the transmission facilities.   The
    Commission therefore concluded that the Skiffes Creek Switching
    Station constitutes "a part of any transmission line for
    purposes of Code § 56-46.1(F)."
    In the Commonwealth, electrical power is supplied via a
    three part system: generation, transmission, and distribution.
    See Code § 56-576; Joint Legislative Audit and Review Comm'n,
    Report to the Governor and General Assembly of Virginia:
    Evaluation of Underground Electric Transmission Lines in
    Virginia, House Doc. No. 87, at 2 (2006), available at
    http://leg2.state.va.us/dls/h&sdocs.nsf/By+Year/HD872006/$file/H
    D87.pdf (last visited April 7, 2015) ("JLARC Report").    In the
    Virginia Electric Utility Regulation Act, the General Assembly
    reliability standards mandatory, subject to FERC's oversight.
    See Pub. L. No. 109-85, 119 Stat. 594, 941 (2005) (codified at
    16 U.S.C. § 824o).
    45
    has defined the "[t]ransmission system" as "those facilities and
    equipment that are required to provide for the transmission of
    electric energy."   Code § 56-576.   In turn, "[t]ransmission"
    refers to the "transfer of electric energy through the
    Commonwealth's interconnected transmission grid from a generator
    to either a distributor or a retail customer."    
    Id. Meanwhile, "generation"
    means "the production of electric energy," and
    "distribution" refers to "the transfer of electric energy
    through a retail distribution system to a retail customer."      
    Id. Thus, the
    General Assembly has defined the transmission system
    to extend from the point of generation to the point of
    distribution.   As the statutory definitions demonstrate, there
    is a functional distinction between these terms.    An electrical
    generating facility is not a transmission facility, and a
    distribution facility is not a transmission facility.    However,
    each is a type of "electric utility facility."     See Code § 56-
    46.1; see also Code § 56-576 (defining "electric utility").
    Transmission lines generally operate at high voltages —
    considerably higher than distribution lines.   See JLARC Report,
    at 5 (noting that the "most common voltage for transmission
    lines is 230 kilovolts (kV)" while distribution lines "generally
    operate at lower voltages of 34.5 kV or less").    The record
    indicates that the Skiffes Creek Switching Station will have the
    capacity to step the voltage down from 500 kV to 230 kV and from
    46
    230 kV to 115 kV.   It will also link 7.4 miles of new 500 kV
    transmission line to 20.2 miles of new 230 kV transmission line,
    thereby connecting the Surry Switching Station and Whealton
    Substation.   Nothing in the record indicates that the Skiffes
    Creek Switching Station will step the voltage down to levels
    associated with distribution.    Therefore, the record reflects
    that the Skiffes Creek Switching Station is functionally part of
    the transmission system.   See Code § 56-576.
    Furthermore, JLARC recognized that the terms "circuit" and
    "line" are "often used synonymously," but explained that a line
    may have one or more circuits.   JLARC Report, at 3.   As the
    Hearing Examiner recognized, the dictionary definition of a
    "transmission line" refers to its function as a "circuit." 2    The
    Hearing Examiner and the Commission reasoned that the purpose of
    the Skiffes Creek Switching Station is to complete a
    transmission circuit, the path between the Surry Switching
    Station and the Whealton Substation.   Thus, it is an integral
    part of the transmission line.
    2
    A "transmission line" is "a metallic circuit of three or
    more conductors used to send energy usu. at high voltage over a
    considerable distance; specif : a usu. metallic line used for
    the transmission of signals or for the adjustment of circuit
    performance and often consisting of a pair of wires suitably
    separated, a coaxial cable, or a wave guide." Webster's Third
    New International Dictionary 2429 (1993). In turn, a "circuit"
    is "the complete path of an electric current including any
    displacement current." 
    Id. at 408.
                                     47
    Finally, the fact that a transmission switching station is
    a facility does not make it more reasonable for it to be subject
    to a local zoning ordinance than the remainder of the
    transmission line.   Indeed, under the majority opinion, if an
    electric utility obtains the Commission's approval under Code §
    56-46.1(A) and (B) for the location of a transmission line, but
    fails to obtain permission from local zoning authorities for
    transmission switching stations, the approval under Code § 56-
    46.1(A) and (B) would be meaningless.    The electric utility
    would have to adjust the route of the transmission line until
    all local zoning authorities permit locations for all such
    stations.   Yet Code § 56-46.1(F) provides that the Commission's
    approval of a transmission line satisfies local zoning
    ordinances "with respect to" that transmission line.    Clearly,
    the Commission's approval of the line also must satisfy local
    zoning ordinances with respect to everything necessary for the
    transmission line to function as such.
    For these reasons, I believe the relevant question is
    whether a facility is designed to facilitate transmission or to
    facilitate distribution or to facilitate generation of
    electricity within the Commonwealth.    See Code § 56-576.
    Clearly, the Skiffes Creek Switching Station is designed to
    facilitate, and in fact is integral to, the transmission of
    electricity.   The Commission's practical construction gives
    48
    effect to the function-based distinctions established by the
    General Assembly.   Moreover, it adheres to well-established
    principles of statutory construction.   For these reasons, I
    would affirm the decision of the Commission with respect to its
    interpretation and application of Code § 56-46.1(F).
    49