Marcellus Shale Coalition v. DEP, Aplts. , 185 A.3d 985 ( 2018 )


Menu:
  •                                    [J-73-2017]
    IN THE SUPREME COURT OF PENNSYLVANIA
    MIDDLE DISTRICT
    SAYLOR, C.J., BAER, TODD, DONOHUE, DOUGHERTY, WECHT, MUNDY, JJ.
    THE MARCELLUS SHALE COALITION,               :   No. 115 MAP 2016
    :
    :   Appeal from the Order of the
    Appellee                :   Commonwealth Court at No. 573 MD
    :   2016 dated 11/8/16
    :
    v.                           :
    :
    DEPARTMENT OF ENVIRONMENTAL                  :
    PROTECTION OF THE                            :
    COMMONWEALTH OF PENNSYLVANIA                 :
    AND ENVIRONMENTAL QUALITY                    :
    BOARD OF THE COMMONWEALTH OF                 :
    PENNSYLVANIA,                                :
    :
    Appellants              :   ARGUED: October 18, 2017
    OPINION
    CHIEF JUSTICE SAYLOR                                          DECIDED: June 1, 2018
    This is a direct appeal in the context of pre-enforcement judicial review of
    regulations governing the operation of unconventional gas wells in Pennsylvania. The
    Commonwealth Court, sitting as a trial court, issued a single-judge opinion and order
    preliminarily enjoining the enforcement of some of the challenged regulations. The
    administrative-agency parties appeal from that decision.
    I. Background
    On October 13, 2016, Appellee, the Marcellus Shale Coalition (“MSC”), filed in
    the Commonwealth Court’s original jurisdiction a petition for review in the nature of a
    complaint seeking declaratory and injunctive relief (the “Petition”), on behalf of itself and
    its members. MSC describes itself as a non-profit membership organization whose
    members explore, produce, transmit, and distribute natural gas from the Marcellus and
    Utica Shale formations.      See Petition ¶¶3-4.        MSC named as respondents the
    Pennsylvania Department of Environmental Protection (“DEP”) and the Pennsylvania
    Environmental Quality Board (the “EQB”) (collectively, the “Agencies”).1
    In the Petition, MSC challenged the validity of several regulations relating to
    unconventional gas well operations as governed by Pennsylvania’s Oil and Gas Act of
    2012, known as Act 13.2 See Robinson Twp. v. Commonwealth, 
    623 Pa. 564
    , 584 &
    n.1, 
    83 A.3d 901
    , 913 & n.1 (2013). Those provisions are contained in Title 25, Chapter
    78a of the Pennsylvania Administrative Code. They were promulgated as part of a
    rulemaking package which included regulations for conventional wells under Chapter 78
    and for unconventional wells under Chapter 78a.3 The package went into effect upon
    its publication in the Pennsylvania Bulletin on October 8, 2016.
    1 The Commonwealth Court noted that Pennsylvania’s environmental administration is
    divided among three entities: DEP, which enforces environmental laws and regulations;
    the EQB, which is a rulemaking body; and the Environmental Hearing Board, an
    adjudicative entity tasked with resolving disputed matters. See MSC v. DEP & EQB,
    No. 573 M.D. 2016, slip op. at 3 n.2 (Pa. Cmwlth. Nov. 8, 2016) (citing Tire Jockey
    Serv., Inc. v. DEP, 
    591 Pa. 73
    , 106, 
    915 A.2d 1165
    , 1185 (2007)).
    2 Act of Feb. 14, 2012, P.L. 87, No. 13 (as amended 58 Pa.C.S. §§2301-3504). Under
    Act 13, an unconventional gas well is defined as a bore hole drilled so as to obtain
    natural gas from an “unconventional formation,” 58 Pa.C.S. §2301, which in turn
    signifies a “geological shale formation existing below the base of the Elk Sandstone or
    its geologic equivalent stratigraphic interval where natural gas generally cannot be
    produced at economic flow rates or in economic volumes except by vertical or horizontal
    well bores stimulated by hydraulic fracture treatments or by using multilateral well bores
    or other techniques to expose more of the formation to the well bore.” 
    Id. 3 In
    compliance with legislation enacted in 2014, regulations relating to unconventional
    gas wells were segregated from those pertaining to conventional gas wells, which are
    (continued…)
    [J-73-2017] - 2
    MSC asserted seven counts, focusing on regulations pertaining to discrete areas
    within Chapter 78a which were part of the new package.            These included:    public
    resources, see 25 Pa. Code §§78a.1, 78a.15(f), (g); area of review, see 
    id. §§78a.52a, 78a.73(c),
    (d); onsite processing, see 
    id. §78a.58(f); impoundments,
    see 
    id. §§78a.59b, 78a.59c;
    site restoration, see 
    id. §78a.65; remediation
    of spills, see 
    id. §78a.66(c); and
    waste reporting, see 
    id. §78a.121(b). MSC
    alleged that these provisions were void and
    unenforceable for multiple reasons, including that they were vague, lacked statutory
    authorization, and conflicted with other regulations and statutes applicable to the
    industry. See Petition ¶34. As well, MSC averred that the rulemaking process did not
    comply with the Regulatory Review Act, and that the EQB failed to develop criteria for
    DEP to use in conditioning a drilling permit on relevant factors. See 
    id. A. Request
    for preliminary injunctive relief
    Contemporaneous with the Petition, MSC filed an Application for Expedited
    Special Relief (the “Application”), requesting a preliminary injunction with respect to the
    Chapter 78a regulations challenged in the Petition pending a ruling as to their validity.
    The Agencies submitted a joint answer opposing the Application and arguing MSC
    failed to meet the requirements for a preliminary injunction. An evidentiary hearing was
    held with MSC bearing the burden to demonstrate the need for interim relief.4
    (…continued)
    governed under Chapter 78. Thus, Chapter 78a is a new chapter which pertains
    specifically to unconventional gas wells.
    4  To obtain a preliminary injunction, a litigant must show: (1) it is needed to prevent
    irreparable harm that cannot be adequately compensated by damages; (2) greater
    injury would result from refusing the injunction than from granting it, and, concomitantly,
    an injunction will not substantially harm other interested parties in the proceedings; (3)
    the injunction will restore the parties to their status as it existed prior to the alleged
    wrongful conduct; (4) the party seeking injunctive relief has a clear right to relief and is
    (continued…)
    [J-73-2017] - 3
    At the hearing, MSC did not present any witnesses, but it did enter documents
    into the record, including the transcript of an EQB meeting, a copy of Chapter 78a
    regulations, a regulatory analysis form submitted to the Independent Regulatory Review
    Commission (“IRRC”) for consideration with those regulations, and correspondence
    from the House and Senate Environmental Resources and Energy Committees to the
    IRRC and EQB suggesting legislative disapproval of the proposed Chapter 78a
    regulations.   For their part, the Agencies presented the testimony of DEP Deputy
    Secretary Scott Perry, who heads the agency’s Office of Oil and Gas Management.
    Secretary Perry supplied information concerning unconventional gas drilling and how it
    differs from conventional drilling. He also addressed the substance of the disputed
    regulations, the process by which they were finalized, and the need for such rules.
    B. Trial court decision granting relief in part
    The Commonwealth Court, per Judge Brobson, issued a single-judge,
    unpublished opinion and order, granting in part and denying in part preliminary
    injunctive relief.   As MSC has not cross-appealed, we are only concerned with the
    portion of the decision granting such relief.        In particular, the court granted the
    (…continued)
    likely to prevail on the merits; (5) the injunction is reasonably suited to abate the
    offending activity; and, (6) the injunction will not adversely affect the public interest. See
    SEIU Healthcare Pa. v. Commonwealth, 
    628 Pa. 573
    , 584, 
    104 A.3d 495
    , 502 (2014)
    (citing Warehime v. Warehime, 
    580 Pa. 201
    , 209-10, 
    860 A.2d 41
    , 46-47 (2004)).
    In light of the applicant’s burden of proof on these elements, Justice Donohue criticizes
    MSC for not calling its own witnesses. See Concurring and Dissenting Opinion, slip op.
    at 3. However, MSC introduced into the record various items of documentary evidence,
    and it subjected Secretary Perry to extensive cross-examination. The Commonwealth
    Court could properly consider all such evidence – as well as the Secretary’s direct-
    examination testimony where appropriate – in assessing whether the factors
    enumerated above were satisfied.
    [J-73-2017] - 4
    Application for interim relief (at least in part) with respect to Counts I, II, IV, and V of
    Petition, and denied the Application in all other respects.
    General precepts
    Initially, the court made several general comments concerning the prerequisites
    for preliminary injunctive relief. The court explained, for example, that where a party
    incurs losses from having to comply with an invalid regulation and the relevant
    government agency is immune from liability, the party’s losses constitute irreparable
    harm. See MSC, No. 573 M.D. 2016, slip op. at 8 (citing Boykins v. City of Reading,
    128 Pa. Cmwlth. 154, 158, 
    562 A.2d 1027
    , 1028-29 (1989)). With respect to the clear-
    right-to-relief/likelihood-of-success element, the court added that it need not finally
    decide the merits of the challenger’s substantive claims; rather, the court explained, the
    inquiry is whether the challenger has presented a substantial legal question that must
    be resolved to determine the parties’ rights and obligations. See 
    id. (citing T.W.
    Phillips
    Gas & Oil Co. v. Peoples Natural Gas Co., 
    492 A.2d 776
    , 780-81 (Pa. Cmwlth. 1985)).
    Finally, the court indicated that the status quo to be preserved by a preliminary
    injunction is the last “peaceable, lawful, noncontested status which preceded the
    pending controversy.” 
    Id. (citing The
    Woods at Wayne Homeowners Ass’n v. Gambone
    Bros. Constr. Co., 
    893 A.2d 196
    , 204 n.10 (Pa. Cmwlth. 2006)).
    Public resources (Count I)
    In Count I, MSC alleged that regulations pertaining to public resources, as
    reflected in Sections 78a.15(f) and (g), together with related definitions in Section 78a.1,
    were void and unenforceable for a variety of reasons.
    The court noted that Section 78a.15(f) imposes on drilling applicants a pre-
    application-notice obligation relative to “public resources” – a term that is not defined
    but, in context, appears to signify various types of features such as forests, game lands,
    [J-73-2017] - 5
    wildlife areas, national natural landmarks, state or national scenic rivers, historical and
    archaeological sites, threatened or endangered species, and critical habitats. See 25
    Pa. Code §78a.15(f)(1). Under the Chapter 78a regulations, it also includes “common
    areas on a school’s property or a playground” and “other critical communities.” 
    Id. “Other critical
    communities” is defined in Section 78a.1 to include plant and animal
    “species of special concern identified on a [Pennsylvania Natural Diversity Inventory]
    receipt[.]” 
    Id. §78a.1. Further,
    a “common area on a school’s property” comprises “an
    area on a school’s property accessible to the general public for recreational purposes.”
    
    Id. Thus, the
    court observed, in relation to each public resource that may potentially be
    impacted by a proposed drilling operation, the applicant must provide to each “public
    resource agency” – that is, an entity which manages a public resource, including
    playground owners, see 
    id. – information
    concerning its proposal, such as a plat and
    any measures which might mitigate prospective harm to the public resource in question.
    MSC forwarded eleven distinct legal challenges to this scheme, see Petition ¶44,
    based largely on the premise that, in Robinson Township v. Commonwealth, 
    637 Pa. 239
    , 
    147 A.3d 536
    (2016) (“Robinson Twp. IV”), this Court enjoined enforcement of
    Section 3215(c) of Act 13 – with the consequence that DEP lacked authority to protect
    “public resources” under Act 13. In the alternative, MSC claimed, inter alia, that: Act 13
    does not authorize the type of pre-permitting notification scheme required by the above-
    mentioned regulations; such regulations exceed the scope of DEP’s authority by
    extending public-resource status to species of special concern, common areas of
    schools, and playgrounds; the regulations improperly confer “public resource agency”
    status upon local government agencies and private parties; and the scheme does not
    comply with Section 3325(e) of Act 13. As to this latter contention, the court explained
    that Section 3215(e) directs the EQB to develop, by regulation, criteria for DEP to use in
    [J-73-2017] - 6
    “conditioning a well permit based on its impact to the public resources identified under
    subsection (c) and for ensuring optimal development of oil and gas resources and
    respecting property rights of oil and gas owners.” 58 Pa.C.S. §3215(e)(1) (emphasis
    added). In turn, subsection (c) indicates that DEP “shall consider the impact of the
    proposed well on public resources” such as parks, forests, wildlife areas, scenic rivers,
    natural landmarks, habitats of “rare and endangered flora and fauna and other critical
    communities,” historical and archaeological sites, and sources of “drinking supplies[.]”
    
    Id. §3215(c) (emphasis
    added).
    The Commonwealth Court ultimately rejected MSC’s general argument that DEP
    lacks authority to protect public resources under Act 13. The court explained that, in
    Pennsylvania Independent Oil & Gas Ass’n v. DEP, 
    146 A.3d 820
    (Pa. Cmwlth. 2016),
    aff’d per curiam, ___ Pa. ___, 
    161 A.3d 949
    (2017), it had concluded that, in the wake
    of Robinson Township v. Commonwealth, 
    623 Pa. 564
    , 
    83 A.3d 901
    (2013) (“Robinson
    Twp. I”), DEP’s authority under Section 3215(c) of Act 13 “to consider the impact that a
    proposed well will have on public resources, those listed and unlisted, is extant, limited
    only by” the portion of Robinson Twp. I that enjoins Act 13’s enforcement with respect to
    certain statutory water source setback and waiver provisions.       MSC, No. 573 M.D.
    2016, slip op. at 14 (quoting Pa. Indep. Oil & Gas 
    Ass’n, 146 A.3d at 829
    ). The court
    also found most of the other legal theories forwarded by MSC to be insufficient to
    warrant preliminary injunctive relief.
    The court did, however, conclude that MSC had raised a colorable argument that
    the regulations improperly expanded the list of protected resources beyond those
    enumerated in Section 3215(c). Although acknowledging that Section 3215(c)’s list is
    not exhaustive, the court observed that a substantial question remained whether the
    General Assembly intended to protect only publicly-owned natural resources, or all
    [J-73-2017] - 7
    publicly-owned property, as well as privately-owned property open to the public. See 
    id. at 16-17.
    Similarly, the Commonwealth Court found that MSC presented a substantial
    question regarding the permissibility of subsuming “species of special concern” within
    the public-resource protection rules by including them within the definition of “other
    critical communities.”     25 Pa. Code §78a.1.           It expressed that such resource
    classification fell below endangered or threatened species, was not the result of public
    rulemaking, and lacked special protection under Pennsylvania statutes enforced by
    DEP. Accordingly, the court indicated that the inclusion of “species of special concern”
    within the challenged regulations was “untethered” to the Agencies’ authority under Act
    13. MSC, No. 573 M.D. 2016, slip op. at 18.
    Overall, then, the court determined that MSC had satisfied the clear-right-to-relief
    prong in relation to the Chapter 78a regulations in question insofar as they include as
    public resources “common areas on a school’s property or a playground” and “species
    of special concern,” and include playground owners as public resource agencies. The
    court reasoned that these aspects of the regulations gave rise to irreparable harm per
    se and, additionally, irreparable harm via the “cost [of] compliance with these provisions
    – costs that well applicants will be unable to recover . . . if this Court should rule in favor
    of MSC on the merits.” 
    Id. Finally, the
    court held that the harm to MSC from refusing a narrowly-tailored
    preliminary injunction relative to the above discrete items outweighed the harm from
    granting it, particularly as granting it would leave in place the overall notice, comment,
    and mitigation scheme reflected in Section 78a.15(f), and the Agencies had not offered
    evidence at the hearing that preliminarily enjoining these provisions would harm any
    person, entity, or the public. As well, the court noted that a narrowly-tailored injunction
    [J-73-2017] - 8
    would restore the parties to the status quo as it existed prior to the alleged wrongful
    conduct and would not adversely affect the public interest. See 
    id. at 19
    & n.13.
    Area of review (Count II)
    In Count II of the Petition, MSC challenged the validity of regulations appearing in
    Sections 78a.52a and 78a.73(c) and (d), which relate to the obligations of well operators
    relative to nearby wells and the operators of such wells. These rules are designed to
    address DEP’s concern with the unintentional migration of fluids and other materials
    associated with unconventional drilling from the target well to nearby orphan,
    abandoned, or plugged wells.
    Under the regulations, prospective operators must, in the pre-drilling timeframe,
    conduct an area-of-review survey identifying all active, inactive, orphan, abandoned,
    and plugged-and-abandoned wells that lie within 1,000 feet of the operator’s intended
    vertical well bore or of any point on the surface above the length of an intended
    horizontal bore.5 They must also provide notice of their planned drilling activities to the
    operators of all such nearby wells. They are additionally required to engage in ongoing
    visual monitoring of all such nearby wells during well stimulation activities, and to
    provide remediation – such as plugging orphan and abandoned wells – in the event
    stimulation of a well by hydraulic fracturing causes an intrusion into or alteration of a
    well listed in the area-of-review survey. See 25 Pa. Code §§78a.52a, 78a.73(c), (d).
    5 Act 13 defines an abandoned well as one that has not been used for extraction within
    the past 12 months, or for which production equipment has been removed, or which is
    considered dry and not equipped for production within 60 days after drilling or
    deepening. See 58 Pa.C.S. §3203. It defines an orphan well as one that was
    abandoned before April 18, 1985, which “has not been affected or operated by the
    present owner or operator and from which the present owner, operator or lessee has
    received no economic benefit other than as a landowner or recipient of a royalty interest
    from the well.” 
    Id. [J-73-2017] -
    9
    MSC alleged that: these provisions impose an unreasonable and unwarranted
    monitoring obligation; there is no legal authority for such area-of-review requirements;
    requiring someone other than the well owner to plug an orphan or abandoned well
    conflicts with Section 3220 of Act 13, which imposes plugging requirements only on the
    well owner or operator, see 58 Pa.C.S. §3220; the regulations are void for vagueness in
    light of DEP’s admission at an EQB meeting that it intends to issue technical guidance
    documents to clarify the obligations created under them; and the monitoring and
    remediation provisions would force well operators to enter illegally onto property owned
    and controlled by others.
    As with Count I, the Commonwealth Court granted preliminary injunctive relief in
    part. Initially, the court rejected the contention that the challenged regulations were
    unreasonable or unfounded, as MSC failed to demonstrate that the migration of drilling
    fluids poses no risk to Commonwealth waters as broadly defined by the Clean Streams
    Law.6 See 35 P.S. §691.1 (relating to definitions). Further, the court indicated that in
    passing Act 13, the General Assembly envisioned that DEP’s authority to regulate well
    operations in the public interest extended beyond Act 13 and “encompassed authority
    granted under a plethora of existing environmental laws, working in concert with Act 13.”
    MSC, No. 573 M.D. 2016, slip op. at 24 (footnote and citations omitted). In light of such
    presumed authority, the court also determined that no substantial issue was raised
    concerning the appropriateness of requiring operators to submit to DEP an area-of-
    review survey as part of the application process. The court additionally rejected several
    other theories forwarded by MSC, including that the regulations are void for vagueness.
    Nevertheless, the Commonwealth Court found that MSC raised a substantial
    legal issue regarding the reasonableness of the monitoring and remediation provisions.
    6   Act of June 22, 1937, P.L. 1987, No. 394 (as amended 35 P.S. §§691.1-691.1001).
    [J-73-2017] - 10
    It referenced significant implementation issues apparent from the face of the regulation,
    i.e., 25 Pa. Code §78a.52a(c)(3), including whether a well operator could validly obtain
    access to, and remediate, every well listed in the area-of-review survey owned by
    others. Moreover, the court concluded that substantial questions existed as to how
    Section 78a.73(d) is consistent with the well-plugging requirements set forth in Act 13,
    which place the onus on a well owner or operator to plug its own wells, and DEP’s own
    authority to plug wells under that statute. See MSC, No. 573 M.D. 2016, slip op. at 26
    (citing, 58 Pa.C.S. §§3220, 3271).
    The Commonwealth Court also determined that MSC established irreparable
    harm that outweighed any harm in refusing to grant the injunction, because the cost of
    compliance as estimated by the EQB was $11 million, which may be unrecoverable if
    MSC is successful on the merits. Further, the court concluded that an injunction would
    restore the parties to the status quo, that is, the absence of monitoring and remediation
    requirements with respect to wells owned or operated by others. Ultimately, the court
    expressed that it would grant a narrow preliminary injunction whereby operators must
    still monitor and remediate any of their own wells listed in the area-of-review survey, but
    not the wells of others. See 
    id. at 27.
    Impoundments (Count IV)
    In Count IV, MSC alleged that the Chapter 78a rulemaking package contained
    regulations with extensive and burdensome new requirements for impoundments. MSC
    pointed to rules setting forth new construction standards for well-development
    impoundments, including requirements that they be constructed with a synthetic
    impervious liner and either have a completely-surrounding fence or be continuously
    monitored by an individual to prevent damage from third parties or wildlife. See 25 Pa.
    [J-73-2017] - 11
    Code §78a.59b(d), (e).7 MSC also noted that existing well-development impoundments
    must be upgraded to meet these new standards or closed by October 10, 2017. See 
    id. §78a.59b(b). As
    well, MSC averred that the regulations mandate that centralized
    impoundments either be closed or re-permitted by a date certain under the Solid Waste
    Management Act (“SWMA”).8 See 
    id. §78a.59c. MSC
    challenged these regulations on a number of grounds. Among these was a
    contention that operators, including its members with impoundments that were built in
    compliance with DEP regulations, must now close their impoundments or upgrade them
    to meet the new standards. In this respect, MSC observed there is no grandfathering
    for synthetic liners already in place. See Petition ¶64.
    The Commonwealth Court found that a substantial legal question existed in this
    regard, noting in particular that Secretary Perry credibly testified that: the new rules
    arose, not from a change in the law, but from a change in DEP’s interpretation of
    longstanding law; and existing impoundments permitted and built to DEP standards
    would have to be retrofitted or closed under DEP’s new interpretation. See MSC, No.
    573 M.D. 2016, slip op. at 32 (quoting Young J. Lee, Inc. v. Dep’t of Revenue, 
    504 Pa. 367
    , 375, 
    474 A.2d 266
    , 270 (1983) (“The government cannot, on the one hand, create
    a business which is dependent on a permit and then, with the other, destroy it by
    revoking the authorizing permits without first affording sufficient due process.” (internal
    quotation marks and citation omitted))).        The court additionally recognized that,
    7According to the Commonwealth Court, well-development impoundments store fresh
    water for use in drilling operations, whereas centralized impoundments store waste
    water generated from drilling activities. See MSC, No. 573 M.D. 2016, slip op. at 31.
    8   Act of July 7, 1980, P.L. 380 (as amended 35 P.S. §§6018.101-6018.1003).
    [J-73-2017] - 12
    according to the hearing evidence, the cost of impoundment retrofitting was substantial
    and potentially unrecoverable, thereby establishing irreparable harm.
    Finally, while acknowledging that the proposed regulations would likely offer
    greater health and safety protections, the court noted DEP offered no evidence
    demonstrating that existing impoundments pose an immediate threat to the public
    health and safety or to the environment – a circumstance which led the court to
    conclude that the harm from refusing an injunction would outweigh any harm from
    granting it.
    The Commonwealth Court expressed that its preliminary injunction as to the
    impoundment regulations would be closely fitted to address only the effect that such
    regulations would have on existing impoundments. Thus, the court denied injunctive
    relief insofar as the regulations apply to new impoundments. The court indicated that,
    as thus narrowed, the injunctive relief would not adversely affect the public interest.
    See MSC, No. 573 M.D. 2016, slip op. at 33.
    Site restoration (Count V)
    In Count V of its Petition, MSC challenged the regulations pertaining to site
    restoration.   As the term suggests, site restoration refers to restoration, after the
    construction of a well is complete, of land surface areas disturbed during the creation of
    the well. See 25 Pa. Code §78a.65(a).
    Site restoration is addressed by Section 3216 of Act 13.          See 58 Pa.C.S.
    §3216(a) (requiring every well owner or operator to “restore the land surface within the
    area disturbed in siting, drilling, completing and producing the well”). That provision
    indicates operators must formulate an erosion and sediment control plan which
    complies with the Clean Streams Law. See 
    id. §3216(b). It
    also requires that various
    aspects of site restoration be complete within nine months after a well is drilled, see 
    id. [J-73-2017] -
    13
    §3216(c), (d), unless an extension is obtained from DEP, see 
    id. §3216(g). Finally,
    restoration activities accomplished per Act 13 and its associated regulations must
    comply with the Clean Streams Law. See 
    id. §3216(e). The
    Commonwealth Court
    observed that Section 78a.65 appears to implement the requirements contained in
    Section 3216 of Act 13.
    As with previous counts, MSC articulated several grounds on which it believed
    that Section 78a.65 was void and unenforceable. Ultimately, the Commonwealth Court
    found that only one of MSC’s claims raised a substantial legal question.
    By way of further background, under the Clean Streams Law and associated
    regulations in Title 25, Chapter 102 of the Pennsylvania Code (relating to erosion and
    sediment control), directives are given in a rule governing post-construction stormwater
    management (“PCSM”), namely 25 Pa. Code §102.8. Per that provision, all PCSM
    plans must meet certain basic requirements. See 
    id. §102.8(f). Additional
    mandates for
    pre- and post-development stormwater analysis are listed in Section 102.8(g). Notably,
    subsection (g) exempts from its scope “regulated activities that require site restoration
    or reclamation, and small earth disturbance activities identified in subsection (n)[.]” 
    Id. §102.8(g). Subsection
    (n), in turn, provides a list of exempted items which includes that
    portion of a site restoration plan identifying PCSM best management practices (“BMPs”)
    to manage stormwater from oil and gas activities, and indicates that such items may be
    used to satisfy the requirements of Section 102.8, so long as the PCSM plan meets the
    requirements of several other enumerated subsections of Section 102.8 other than
    subsection (g). The subsection states, in full:
    (n) Regulated activities that require site restoration or reclamation, and
    small earth disturbance activities. The portion of a site reclamation or
    restoration plan that identifies PCSM BMPs to manage stormwater from oil
    and gas activities or mining activities permitted in accordance with
    Chapters 78 and 86--90; timber harvesting activities; pipelines; other
    [J-73-2017] - 14
    similar utility infrastructure; Department permitted activities involving less
    than 1 acre of earth disturbance; or abandoned mine land reclamation
    activities, that require compliance with this chapter, may be used to satisfy
    the requirements of this section if the PCSM, reclamation or restoration
    plan meets the requirements of subsections (b), (c), (e), (f), (h), (i) and (l)
    and, when applicable, subsection (m).
    25 Pa. Code §102.8(n).
    Returning to the Chapter 78a regulations in issue, MSC questioned whether
    Section 78a.65(d) could be enforced, given MSC’s view that that subsection purported
    to limit the above-mentioned exemption. In particular, Section 78a.65(d) states:
    (d) Areas not restored. Disturbed areas associated with well sites that are
    not included in a restoration plan, and other remaining impervious
    surfaces, must comply with all requirements in Chapter 102 (relating to
    erosion and sediment control). The PCSM plan provisions in §102.8(n)
    apply only to the portions of the restoration plan that provide for
    restoration of disturbed areas to meadow in good condition or better or
    otherwise incorporate ABACT [antidegeneration best available
    combination of technologies] or nondischarge PCSM BMPs.
    25 Pa. Code §78a.65(d) (emphasis added).
    The Commonwealth Court found that MSC had raised a substantial legal issue
    as to whether the above subsection “imposes erosion and sediment control measure
    requirements on well owners and operators in excess of what is required under the
    Clean Streams Law.” MSC, No. 573 M.D. 2016, slip op. at 38. The court continued that
    Section 3216(b) and (c) of Act 13 specify that erosion and sediment control measures
    are to be implemented pursuant to the Clean Streams Law. It observed that in the
    regulatory analysis form (the “RAF”) submitted to the IRRC for consideration with the
    Chapter 78a regulations, DEP had described these provisions as mere clarifications of
    existing law. The court noted that that position was undermined to the extent Section
    78a.65(d) purports to abrogate any exemptions contained in the Clean Streams Law.
    [J-73-2017] - 15
    That being the case, the court determined that MSC had raised a substantial legal
    question and thus had satisfied the clear-right-to-relief prong. See 
    id. Further, the
    Commonwealth Court held that any conflict between Section
    78a.65(d) and the Clean Streams Law and/or Chapter 102 constitutes irreparable harm
    per se insofar as the challenged provision conflicts with legislative intent as expressly
    stated in Section 3216(b) and (e) of Act 13. The court added that the harm to MSC from
    denying interim relief would outweigh any purported harm to the Agencies from granting
    it.   On this latter point, the court expressed that preliminarily enjoining DEP from
    implementing the regulation should have no effect on the agency as DEP stated in the
    RAF that the regulation merely restates what the DEP believes are current restoration
    requirements. See 
    id. at 37
    (quoting RAF at 101). Additionally, the court indicated that
    enjoining the provision will restore the parties to the status quo before the allegedly
    wrongful conduct, namely, the absence of Section 78a.65(b). See 
    id. at 39.
    Lastly, the
    Commonwealth Court clarified that its injunction would be narrowly tailored to
    encompass only Section 78a.65(d), thus “leaving intact the bulk of Section 78a.65
    pending the outcome of this litigation.” 
    Id. The Commonwealth
    Court’s order
    Based on the foregoing, the Commonwealth Court issued an order granting in
    part and denying in part MSC’s Application for Expedited Special Relief. The order
    preliminarily enjoined DEP from implementing and enforcing: (1) Sections 78a.1 and
    78a.15(f) and (g) to the extent they include “common areas on a school’s property or a
    playground” and “species of special concern” as “public resources” and include
    “playground owners” as a “public resource agency”; (2) Section 78a.52a(c)(3) and
    Section 78a.73(c) and (d) to the degree they impose monitoring and remediation
    obligations on owners and operators with respect to wells in the area-of-review survey
    [J-73-2017] - 16
    owned and/or operated by others; (3) Section 78a.59b(b) as to pre-existing
    impoundments (but not as to new impoundments) and 78a.59c, which by its terms only
    applies to operators using a centralized impoundment as of October 8, 2016; and (4)
    Section 78a.65(d) in its entirety. The order denied the Application in all other respects.
    See MSC, No. 573 M.D. 2016, Order, at 1-2 (Pa. Cmwlth. Nov. 8, 2016).
    C. Appeal to this Court
    Litigation of the Petition’s merits continues in the Commonwealth Court.         In
    parallel with those proceedings, the Agencies appealed from the partial grant of
    preliminary injunctive relief, and this Court noted probable jurisdiction.
    II. Arguments and Analysis
    A. Trial court standard for interim relief
    The Agencies generally contend that the Commonwealth Court did not utilize the
    correct standard for granting a preliminary injunction.       They note that, when finally
    adjudicating the validity of a regulation adopted per an agency’s rule-making power,
    courts use a three-part test whereby the regulation must be: (a) adopted within the
    agency’s statutory power; (b) issued pursuant to proper procedure; and (c) reasonable.
    See Brief for Appellants at 27 (quoting Tire Jockey Serv., Inc. v. DEP, 
    591 Pa. 73
    , 108,
    
    915 A.2d 1165
    , 1188 (2007)). Although the Commonwealth Court’s reasoning centered
    on the first element, the Agencies initially focus on the third prong, arguing that a
    regulation can only be deemed unreasonable if it was fashioned in bad faith, is arbitrary,
    or represents a gross abuse of discretion. See 
    id. at 28.
    The Agencies continue by
    asserting, without reference to supporting authority, that courts should apply the same
    level of deference to an agency’s interpretation of its enabling statutes in reviewing a
    [J-73-2017] - 17
    pre-enforcement preliminary injunction as would be warranted in the context of a post-
    enforcement challenge. See 
    id. at 29.
    Based on these dual premises, the Agencies conclude (again without citation to
    authority) that, in assessing the clear-right-to-relief prerequisite for a preliminary
    injunction, the Commonwealth Court should have “required MSC to show (1) manifest
    error in the EQB’s interpretation of its statutory authority to promulgate the challenged
    Chapter 78a [r]egulations, (2) a manifest violation of a statutory procedure in
    promulgating the regulations, or (3) that the [a]gencies’ assertions that the regulations
    are reasonable were made in bad faith, purely arbitrary, or a manifest abuse of
    discretion.” 
    Id. The Agencies
    additionally fault MSC for failing to call witnesses at the preliminary
    injunction hearing. They also emphasize that the regulations were formulated during a
    six-year time period in which voluminous public comments – including comments from
    other state agencies, DEP’s Oil and Gas Technical Advisory Board, experts,
    stakeholders, and local governments – as well as data from the oil and gas industry
    were received and taken into account, and that the regulations were published in the
    Pennsylvania Bulletin as an order of the EQB. See 
    id. at 30-31.
    MSC argues that the Agencies, throughout their brief, employ an incorrect
    statement of the deference owed to DEP’s interpretation of the law. MSC proffers that
    the Commonwealth Court utilized the proper standard when evaluating the elements for
    a preliminary injunction, and the Agencies overlay a framework more suited to a final
    merits assessment of the challenged regulations’ validity. See Brief for Appellee at 16-
    17 (quoting Fischer v. DPW, 
    497 Pa. 267
    , 271, 
    439 A.2d 1172
    , 1174 (1982) (noting that,
    as a preliminary injunction “is designed to preserve the status quo pending final
    [J-73-2017] - 18
    resolution of the underlying issues,” the clear-right prerequisite is not intended to require
    that a party seeking a preliminary injunction establish its claim absolutely)).
    In this regard, MSC indicates that the three-prong test articulated by the
    Agencies will be applied later in the litigation when the Commonwealth Court decides
    the Petition’s merits, see 
    id. at 17
    (citing Rand v. State Bd. of Optometry, 
    762 A.2d 392
    ,
    394 (Pa. Cmwlth. 2000)), but that for now, it was sufficient for the court to determine
    that there are substantial, unresolved legal questions. See 
    id. MSC adds
    that, in all
    events, when applying the first (lawfulness) prong in the context of a challenge to
    legislative rulemaking, little deference is due to an agency with regard to its reading of
    the authorizing statute, since administrative agencies have no special expertise in the
    area of statutory interpretation.
    The regulations presently at issue are legislative rules – meaning they establish a
    controlling standard of conduct. See Borough of Pottstown v. Pa. Mun. Ret. Bd., 
    551 Pa. 605
    , 609, 
    712 A.2d 741
    , 743 (1998).              Such regulations “enjoy a general
    presumption of reasonableness.”       
    Id. (citations omitted).
      See generally Nw. Youth
    Svcs., Inc. v. DPW, 
    620 Pa. 140
    , 155-61, 
    66 A.3d 301
    , 310-13 (2013) (surveying the
    different types of agency rules and the deference judicially accorded to each). As MSC
    notes, however, and because legislative rulemaking “is ‘an exercise of legislative power
    by an administrative agency, pursuant to a grant of legislative power by the legislative
    body,’” Popowsky v. PUC, 
    589 Pa. 605
    , 630, 
    910 A.2d 38
    , 53 (2006) (quoting
    Rohrbaugh v. PUC, 
    556 Pa. 199
    , 208, 
    727 A.2d 1080
    , 1085 (1999)), a legislative rule is
    only valid if it falls within the scope of the rulemaking power granted by the General
    Assembly. See, e.g., 
    Rand, 762 A.2d at 395
    (invalidating an agency regulation that
    exceeded the scope of its legislatively-granted rulemaking powers).
    [J-73-2017] - 19
    In the context of a motion for a preliminary injunction, only a substantial legal
    issue need be apparent for the moving party to prevail on the clear-right-to-relief prong.
    See 
    SEIU, 628 Pa. at 590-91
    , 104 A.3d at 506; 
    Fischer, 497 Pa. at 271
    , 439 A.2d at
    1174.9 This implicates a less deferential standard relative to the agency’s interpretation
    of the governing statute than would be applicable to a trial court’s final merits
    determination.
    B. Standard of appellate review
    Appellate courts review a trial court order granting or denying a preliminary
    injunction for an abuse of discretion. See Brayman Constr. Crop. v. PennDOT, 
    608 Pa. 584
    , 601, 
    13 A.3d 925
    , 935 (2011) (citing Summit Towne Ctr., Inc. v. Shoe Show of
    Rocky Mount, Inc., 
    573 Pa. 637
    , 645, 
    828 A.2d 995
    , 1000 (2003)). Insofar as issues of
    statutory interpretation are concerned, however, our review is de novo. See 
    SEIU, 628 Pa. at 591
    , 104 A.3d at 506. Additionally,
    we do not inquire into the merits of the controversy, but only examine the
    record to determine if there were any apparently reasonable grounds for
    the action of the court below. Only if it is plain that no grounds exist to
    support the decree or that the rule of law relied upon was palpably
    erroneous or misapplied will we interfere with the [decree].
    
    Brayman, 608 Pa. at 602
    , 13 A.3d at 935-36 (emphasis added) (quoting Roberts v. Bd.
    of Dirs. of Sch. Dist. of Scranton, 
    462 Pa. 464
    , 469, 
    341 A.2d 475
    , 478 (1975)).
    9  As an aside, we note that SEIU referenced Fischer for the position that the party
    seeking relief need only raise a substantial legal question regarding the parties’ rights.
    For its part, however, Fischer suggested that such precept only applies where: (a) there
    is a threat of irreparable harm; (b) the injunction simply restores the status quo; and (c)
    greater injury would result by refusing the injunction than by granting it. Regardless,
    any difference between these two formulations is presently immaterial, as the
    prerequisites mentioned in Fischer are satisfied with regard to the aspects of the
    Commonwealth Court’s order which we presently affirm.
    [J-73-2017] - 20
    C. Individual counts
    Public resources (Count I)
    (i) Playgrounds and common areas on a school’s property
    The Agencies argue that the list of public resources appearing in Section
    3215(c), which relates to well-location restrictions, is open ended and that “common
    areas on a school’s property or a playground” and “species of special concern” are of
    the same class and kind as the items expressly enumerated in that subsection.10 They
    observe that these terms are defined in the regulations as follows:
    Common areas of a school’s property -- An area on a school’s property
    accessible to the general public for recreational purposes. For the
    purposes of this definition, a school is a facility providing elementary,
    secondary or postsecondary educational services.
    Playground – (i) An outdoor area provided to the general public for
    recreational purposes.   (ii) The term includes community-operated
    recreational facilities.
    25 Pa. Code §78a.1. The Agencies maintain that they articulated reasons the general
    public regularly uses playgrounds and common areas of a school’s property, and,
    10   The provision states:
    (c) Impact.--On making a determination on a well permit, the department
    shall consider the impact of the proposed well on public resources,
    including, but not limited to: (1) Publicly owned parks, forests, game lands
    and wildlife areas. (2) National or State scenic rivers. (3) National natural
    landmarks. (4) Habitats of rare and endangered flora and fauna and other
    critical communities. (5) Historical and archaeological sites listed on the
    Federal or State list of historic places. (6) Sources used for public drinking
    supplies[.]
    58 Pa.C.S. §3215(c).
    [J-73-2017] - 21
    moreover, such resources “share several similar characteristics with parks.” Brief for
    Appellants at 36.
    The Commonwealth Court did not disagree.            It observed that the Agencies’
    interpretation of the statute could be overly broad as it might justify the inclusion of such
    items as shopping centers, movie theaters, sports stadiums, and amusement parks, all
    of which, per the doctrine of ejusdem generis, do not appear to be contemplated by
    Section 3215(c).    See MSC, No. 573 M.D. 2016, slip op. at 17 n.11.              The court
    additionally noted that the Environmental Rights Amendment relates to the protection of
    “natural, scenic, historic and esthetic values of the environment,” and obligates the
    Commonwealth to conserve “public natural resources.”              PA. CONST. art. I, §27
    (emphasis added).      It raised the possibility that the General Assembly intended to
    conform the list of items appearing in Section 3215(c) roughly to the scope of protection
    reflected in Article I, Section 27. Under these circumstances, the court concluded a
    substantial question was raised whether it would be proper to interpret Section 3215(c)
    as authorizing regulations which subsume private resources open to the public, such as
    playgrounds and common areas of schools, which are not inherently natural, scenic,
    historic, or esthetic. See MSC, No. 573 M.D. 2016, slip op. at 17-18 & n.10.
    In our view, these observations support the court’s determination that a
    substantial legal question was raised in relation to the challenged regulations’ inclusion
    of playgrounds and school common areas as “public resources” and, concomitantly, the
    owners of these items as “public resource agencies.” That being the case, there is no
    basis to disturb the Commonwealth Court’s determination that MSC established the
    clear-right requirement relative to this aspect of Count I.11
    11 In dissent, Justice Donohue expresses that privately-owned recreational lands are “of
    the same kind or class as publicly-owned parks.” Concurring and Dissenting Opinion,
    slip op. at 6 (internal quotation marks and citation omitted). She also indicates that no
    (continued…)
    [J-73-2017] - 22
    As noted, the court deemed the irreparable-harm prong to be satisfied due to,
    among other things, the cost of compliance. According to the RAF, the total cost of
    compliance will be $888,000 per applicant. See RAF at 87, reprinted in R.R. 842a.
    Although some of this cost would be incurred relative to public resources other than
    playgrounds and school common areas, it is undisputed that the addition of those two
    items accounts for at least part of the cost. Further, since the Agencies enjoy sovereign
    immunity, if the challenged regulations are ultimately held invalid, that portion of the cost
    would not be recoverable by MSC members. Thus, the court reasonably found that
    MSC carried its burden to demonstrate irreparable harm. See generally Boykins, 128
    Pa. Cmwlth. at 
    158, 562 A.2d at 1029
    (“The inability to be adequately compensated by
    an award of damages constitutes irreparable harm.” (citation omitted)).
    As well, given the Agencies’ failure to produce evidence of the harm they would
    suffer if the challenged provisions were enjoined preliminarily, 12 the court reasonably
    (…continued)
    party has compellingly argued why “impacts on [school common areas and
    playgrounds] should not be considered in equal measure before the DEP issues a
    permit[.]” 
    Id. at 8.
    Our task is not to formulate environmental policy, but to evaluate whether the
    Commonwealth Court reasonably discerned the existence of a substantial question
    concerning whether the term “public resources,” as it appears in Section 3125(c), is
    sufficiently expansive to include privately owned land open to the public. In its merits
    resolution, the Commonwealth Court (and/or this Court) may ultimately agree with
    Justice Donohue’s position that such properties are encompassed by Section 3215(c).
    In the interim, however, we believe there are “apparently reasonable grounds” to
    support the Commonwealth Court’s determination that a substantial legal issue exists.
    12In this respect the court observed that, while the specific regulations in issue are
    designed to provide new and greater environmental protections, the Agencies did not
    supply evidence that preliminarily enjoining their enforcement would “harm any person,
    entity, or the public in general.” MSC, No. 573 M.D. 2016, slip op. at 19 n.13.
    [J-73-2017] - 23
    concluded that, for purposes of the motion, greater injury would result from refusing the
    injunction than from granting it.13 We also see no basis to disagree with the court’s
    explanation that issuing the preliminary injunction, narrowly tailored as appropriate,
    would not adversely affect the public interest. Finally, the court reasonably concluded
    that a preliminary injunction would restore the parties to the status quo ante, namely,
    the absence of any regulation subsuming playgrounds and school common areas within
    the notice, comment, and mitigation scheme of 25 Pa. Code §78a.15(f).
    (ii) Species of special concern
    As for “species of special concern,” the Agencies observe, first, that Section
    3215(c)(4) indicates public resources include not only habitats of rare and endangered
    species, but also “other critical communities” – a phrase that must be given some
    meaning. They add that the inclusion, by regulation, of “species of special concern”
    within the scope of that phrase comports with a long-standing practice whereby well
    permit applicants use the PNDI database to enable DEP to consider impacts on species
    of special concern in analyzing applications. See Brief for Appellants at 38-39.14
    13 MSC asserts the Agencies have waived, by omitting from their brief, any challenge to
    the preliminary injunction factors dealing with the weighing of harms as between the
    parties, and the relief being reasonably suited to abate the offending activity. See Brief
    for Appellee at 30-31. The Agencies reply that they have not waived any argument
    regarding harm to the public, as MSC bore the burden of proof on all elements at the
    preliminary injunction stage. See Reply Brief for Appellants at 6-7, 22. This argument
    is non-responsive as it relates to a different factor. As well, the Agencies overlook that,
    as appellants, they carry the burden to demonstrate error by the Commonwealth Court.
    14   Section 78a.1 defines other critical communities as follows:
    (i) Species of special concern identified on a PNDI [Pennsylvania Natural
    Diversity Inventory] receipt, including plant or animal species: (A) In a
    proposed status categorized as proposed endangered, proposed
    threatened, proposed rare or candidate. (B) That are classified as rare or
    tentatively undetermined.
    (continued…)
    [J-73-2017] - 24
    MSC suggests that the Agencies’ argument is misleading.          It maintains that,
    while use of the PNDI database to identify threatened or endangered species may be a
    longstanding practice, imposition of mandatory protections for “species of special
    concern” based on a PNDI receipt is new. See Brief for Appellee at 23.15 It observes
    that, per Secretary Perry’s testimony, the designation of a species as threatened or
    endangered proceeds from a “rigorous process” which includes notice-and-comment
    rulemaking, N.T., Oct. 25, 2016, at 153, whereas the same is not true of species of
    special concern. MSC notes Secretary Perry observed that species of special concern
    are placed in the PNDI database and designated as such by the jurisdictional agencies,
    that is, the Agencies with “statutory authority to protect those species,” including the
    Department of Conservation and Natural Resources, the Game Commission, the Fish
    and Boat Commission, and the Pennsylvania office of the United States Fish and
    Wildlife Service. 
    Id. at 153-54.
    MSC also emphasizes that Secretary Perry confirmed
    the rule requiring consideration of species which are neither endangered nor threatened
    was adopted in 2013 pursuant to a departmental policy, which cannot create law, but is
    now mandatory under the challenged regulation. See 
    id. at 152-54,
    159-60.
    We need not address whether or how a regulation may make obligations
    imposed on an applicant depend on the contents of a database which is updated over
    (…continued)
    (ii) The term does not include threatened and endangered species.
    25 Pa. Code §78a.1. A PNDI receipt, in turn, is defined as “[t]he results generated by
    the [PNDI] Review Tool containing information regarding threatened and endangered
    species and other critical communities.” 
    Id. 15 In
    its Petition, MSC alleged that, because the PNDI database contents change from
    day to day, the information on a receipt – including the list of species of special concern
    – can vary on a daily basis. See Petition ¶44(h).
    [J-73-2017] - 25
    time by other agencies. In finding a substantial legal question, the Commonwealth
    Court did not focus on that aspect of the challenged provision. Rather, after indicating
    that species of special concern, as a resource classification, falls below threatened or
    endangered, see MSC, No. 573 M.D. 2016, slip op. at 18 – a proposition that is not in
    dispute – the court centrally highlighted that such classification is not the result of public
    rulemaking and “does not have any special protection afforded under the laws of this
    Commonwealth that DEP is entrusted to enforce.” 
    Id. The Agencies
    do not contradict
    the Commonwealth Court’s essential observation in this regard, opting instead to
    highlight their general entitlement to deference and the presence of the statutory
    phrase, “other critical communities.” Thus, the Agencies’ argument is not responsive to
    the Commonwealth Court’s reasoning, which, again, relates to whether the Agencies
    are authorized by statute to include within the permitting process a categorization that
    no statute expressly obligates DEP to protect.
    Without deciding finally whether the absence of statutory authority requiring DEP
    to protect species of special concern is a valid basis to conclude that the “other critical
    communities” necessarily excludes that category from the scope of Section 3215(c) of
    Act 13, we agree with the Commonwealth Court that, at a minimum, a substantial legal
    issue on this point has been raised. Accordingly, we affirm its determination that MSC
    has satisfied the clear-right element for preliminary injunctive relief.16
    16 The dissent characterizes MSC’s argument as stating that the PNDI’s “use to identify
    species of special concern is new,” and refers to testimony concerning a “long-standing
    practice” of using the PNDI to identify such species. Concurring and Dissenting
    Opinion, slip op. at 8. The dissent concludes that it was unreasonable for the
    Commonwealth Court to find a substantial legal issue. See 
    id. at 9.
    Respectfully, the
    dissent mischaracterizes both the issue and MSC’s argument. As discussed, what is
    “new” is the imposition of mandatory protections for species of special concern based
    on a PNDI receipt, and the issue arises because their regulatory designation as “other
    critical communities” did not proceed from notice-and-comment rulemaking.
    [J-73-2017] - 26
    Further, under the regulations challenged in Count I, the inclusion of species of
    special concern in the “public resource” category triggers the same notice, comment,
    and mitigation obligations for the well applicant as were applicable to playgrounds and
    school common areas. See 25 Pa. Code §§78a.1, 78a.15(f), (g)(2). The analysis given
    above concerning the other preliminary injunction factors applies equally to the species-
    of-special-concern facet of MSC’s challenge. That being the case, the Commonwealth
    Court had “apparently reasonable grounds” for its action in granting MSC a closely
    tailored preliminary injunction as to Count I.
    Area of review (Count II)
    In relation to Count II, as discussed, the Commonwealth Court rejected many of
    MSC’s challenges to the area-of-review regulations, see 25 Pa. Code §§78a.52a,
    78a.73(c) and (d), which require well operators to identify, monitor, and remediate all
    active, inactive, orphan, abandoned, and plugged-and-abandoned gas and oil wells
    within a certain distance from the operator’s well bore. The court did, however, grant a
    preliminary injunction with regard to the monitoring and remediation provisions insofar
    as they gave rise to significant implementation issues by requiring well operators to
    “trespass” onto others’ lands. MSC, No. 573 M.D. 2016, slip op. at 22.
    The Agencies posit that the Commonwealth Court erred by failing to recognize
    their broad statutory authority under Act 13 and the Clean Streams Law to protect the
    waters of the Commonwealth and the public from the impacts of drilling – powers which
    they exercised by promulgating the area-of-review regulations. They refer to Section
    3274 of Act 13 in particular as giving the EQB authority to promulgate regulations
    necessary to accomplish such objectives.         See Brief for Appellants at 44 (citing 58
    Pa.C.S. §3274 (stating that the EQB “shall promulgate regulations to implement”
    Chapter 32, relating to oil and gas)). The Agencies also note the Clean Streams Law
    [J-73-2017] - 27
    gives DEP discretion to order landowners to provide access to their land whenever a
    condition on that land is causing pollution or a danger of pollution.        See 
    id. at 45
    (quoting 35 P.S. §691.316).
    In terms of liability for environmental harms, the Agencies observe that the Clean
    Streams Law provides an independent basis for liability and that such liability can be
    triggered by causation alone, as opposed to land ownership, thereby undercutting the
    Commonwealth Court’s concern that the regulations are inconsistent with Sections 3220
    and 3271 of Act 13. See 
    id. at 46
    (citing Commonwealth v. Harmar Coal Co., 
    452 Pa. 77
    , 
    306 A.2d 308
    (1973)). The Agencies also advert to the large number of abandoned
    oil and gas wells in this state, the many documented stray-gas-migration investigations
    that have taken place since 1984, and “geyser-like events” and polluted groundwater
    that can result from communication between an active unconventional well and an
    existing oil or gas well.      Id.17   Overall, in this regard, the Agencies fault the
    Commonwealth Court for what they view as an overly narrow interpretation of their
    authority under Act 13 and the Clean Streams Law. See 
    id. at 47.
    Notwithstanding the Agencies’ arguments, there are reasonable grounds for the
    Commonwealth Court’s determination that a substantial legal question was raised in
    terms of the monitoring and remediation obligations imposed by the regulations on well
    operators relative to wells located on other persons’ property. The provision of the
    Clean Streams Law giving DEP power to require entry onto others’ land is not only
    discretionary, it is only triggered by actual pollution or a danger of pollution. The new
    regulatory mandate to enter onto others’ land, visually monitor their wells, and cap their
    wells if necessary, is far broader. Indeed, the regulations dictate that all identified wells
    17Secretary Perry testified that “the act of fracking a well” can only cause groundwater
    contamination when a well-communication incident occurs. N.T., Oct. 25, 2016, at 116.
    [J-73-2017] - 28
    be visually monitored during stimulation activities, although it is not evident how this
    may be achieved without traversing the lands of others. The Agencies have not brought
    to our attention a legal basis on which DEP would be authorized to require access onto
    private land in the case of an inaccessible well which posed no apparent danger of
    pollution. Further, counsel for the Agencies conceded at the hearing that DEP might not
    have the authority to require anyone to allow access to their property for well-monitoring
    purposes. See N.T., Oct. 26, 2016, at 358.18
    Nor is Harmar Coal on point. In that matter this Court consolidated two appeals
    dealing with the obligation of a coal mine operator to treat acid mine drainage (a type of
    polluted water) before discharging it from its own mine into Commonwealth waters. In
    one appeal, some of the drainage had its source in adjacent mines and flowed by
    gravity into the subject mine. In the other, it had to be pumped out of an adjacent mine
    to avoid destruction of a barrier between the two. See Harmar 
    Coal, 452 Pa. at 81
    , 306
    A.2d at 311. In both instances, the statutory language was applicable inasmuch as it
    covered pollution discharges from the subject mine or from any other mine as needed to
    enable operation of the subject mine. See 
    id. at 100,
    306 A.2d at 321. Notably, the
    18 The dissent seeks to circumvent this problem by pointing to evidence that pollution
    could result from a well-communication incident. See Concurring and Dissenting
    Opinion, slip op. at 12. It bears noting that the Commonwealth Court acknowledged
    such potentiality and declined to find a substantial legal issue with regard to it. See
    MSC, No. 573 M.D. 2016, slip op. at 24. Instead, the court focused on issues arising
    from the face of the regulation when considered in light of governing statutory
    provisions. As discussed, these concerns include such items as: whether a well
    operator may access and monitor every well owned by others and located on another’s
    property within the area-of-review survey; and whether Section 78a.73(d) is consistent
    with Act 13’s well-plugging requirements, which mandate that well operators plug their
    own wells. See 
    id. at 26.
    Such issues are not resolved by observing that it is possible
    for a well-communication incident to occur and to cause pollution.
    [J-73-2017] - 29
    controversy did not relate to the entry by a mine operator onto the property of another
    absent ongoing pollution or a known danger – or for visual monitoring purposes.
    Given the above, we conclude there are apparently reasonable grounds to
    support the court’s determination that MSC raised a significant legal question in regard
    to the implementation of the area-of-review requirements.
    In terms of the balancing-of-harms inquiry, the Commonwealth Court’s analysis is
    somewhat conclusory. See MSC, No. 573 M.D. 2016, slip op. at 26. Unfortunately,
    however, the parties’ arguments are not entirely helpful as they are not directly apposite
    to the grant of preliminary relief. MSC notes that the RAF reflects an overall cost to
    industry of $11 million to comply with the area-of-review regulations, and adds that
    these costs will be unrecoverable if the regulations are ultimately deemed invalid. Still,
    that figure appears to be the total cost going forward indefinitely, not the probable cost
    to be incurred pending a final ruling on the merits. Likewise, the Agencies do not give
    an expected cost which takes into account the limited timeframe involved. Rather, they
    maintain there is a non-zero probability of communication between an unconventional
    well and an existing well, which, if it were to occur, would result in water pollution and
    substantial cleanup costs.
    If such incidents were frequent, the Agencies’ argument would carry more
    weight. According to Secretary Perry, however, they are “not a common occurrence.”
    N.T., Oct. 25, 2016, at 120. Even accepting that the cleanup effort ensuing from a
    single occurrence would be financially burdensome, see 
    id., absent some
    indication that
    there is more than a de minimus probability the risk will materialize before MSC’s claims
    are decided (discussed below), we cannot say that the Commonwealth Court lacked
    any reasonable basis for its conclusion regarding the balancing of harms.
    [J-73-2017] - 30
    As for adverse effects to the public interest, the Agencies, again, portray that
    well-communication    incidents   tend   to   cause    significant   environmental harms,
    particularly if the communication is between an unconventional well and a conventional
    one. See Brief for Appellants at 48. It is self-evident that significant environmental
    harms have an adverse effect on the public interest. Again, however, such effects only
    arise from an actual incident.    MSC suggests that the record only supports a low
    probability of this occurring. It argues that, with over 9,000 unconventional wells having
    been drilled in Pennsylvania, see 46 Pa. Bull. No. 41, at 6463 (Oct. 8, 2016), reprinted
    in R.R. 694a (reflecting a figure of 9,486), the record references only five well-
    communication incidents and of those, only one was between an unconventional well
    and a conventional one. See RAF at 89, reprinted in R.R. 844a.19
    It is not clear from the record whether the five episodes mentioned in the RAF
    were intended to comprise all such events that have occurred, as they are couched as
    incidents which DEP chose to analyze for cost-comparison purposes. See 
    id. In their
    reply brief, though, the Agencies do not contradict MSC’s assertion that these are the
    only five which have occurred since unconventional well drilling began, and moreover,
    the Agencies do not point to any aspect of the record suggesting that more than five
    incidents have occurred. Under these circumstances, an apparently reasonable basis
    exists for the Commonwealth Court to conclude that, if a preliminary injunction were to
    issue, the expected effect on the public interest would be slight due to a low probability
    of a well-communication incident occurring within the limited timeframe involved.20
    19More generally, Secretary Perry testified that communication into abandoned wells is
    of substantially greater concern for conventional, than unconventional, drillers. See
    N.T., Oct. 25, 2016, at 116-17.
    20The dissent appears to take the position that the public interest is adversely affected
    so as to defeat preliminary injunctive relief whenever there is any possibility of harm to
    (continued…)
    [J-73-2017] - 31
    Finally, we see no basis to disagree with the court’s suggestion that the
    preliminary injunction, narrowed so that it applies only to wells located on the lands of
    others, restores the parties to their status quo ante. See MSC, No. 573 M.D. 2016, slip
    op. at 26-27.
    Impoundments (Count IV)
    Relative to Count IV, the Commonwealth Court preliminarily enjoined, as applied
    to existing impoundments, Sections 78a.59b(b) and 78a.59c. Those provisions relate to
    well-development impoundments and centralized impoundments, respectively.               See
    supra note 7. As to the latter, Section 78a.59c indicates centralized impoundments
    must be closed or re-permitted by October 8, 2019, in compliance with the requirements
    of Title 25, Subpart D, Article IX of the Pennsylvania Code, which relate to residual
    waste management and were promulgated under SWMA, among other laws. See 25
    Pa. Code §78a.59c.
    For its part, Section 78a.59b(b), relating to well-development impoundments, has
    two parts. It states that operators of unconventional wells must register existing well-
    development impoundments with DEP. In pertinent part, it also mandates that any such
    (…continued)
    the environment, no matter how remote or speculative. See Concurring and Dissenting
    Opinion, slip op. at 13 (suggesting a “no effect” test which would not countenance even
    minimal or speculative risks). Other courts have eschewed that stance and instead
    have considered the probable consequences of an injunction. See, e.g., Stormans, Inc.
    v. Selecky, 
    586 F.3d 1109
    , 1139 (9th Cir. 2009) (explaining that, in analyzing the public-
    interest prong for purposes of a preliminary injunction, courts should not consider
    effects that are remote or speculative, but should “weigh the public interest in light of the
    likely consequences of the injunction” (emphasis in original)). Although the dissent
    quotes general language from SEIU reciting the standard formulation for the sixth prong
    of the governing preliminary-injunction standard, the SEIU Court had no occasion to
    consider whether remote or speculative harms operate to defeat entitlement to
    preliminary injunctive relief.
    [J-73-2017] - 32
    impoundments be upgraded to use a synthetic, impervious liner and be surrounded by a
    fence (unless an individual is continually present) to prevent unauthorized acts by third
    parties and damage from wildlife. See 25 Pa. Code §78a.59b(b), (d), (e).
    The primary substantive basis on which interim relief was granted pertains to the
    circumstance that existing impoundments were built to DEP standards extant at the
    time, and there has been no change in the governing statutory law which would
    authorize DEP to retroactively change such standards for impoundments built years ago
    in reliance on DEP’s prior authorization. See MSC, No. 573 M.D. 2016, slip op. at 32.
    Presently, the Agencies do not argue that the authorizing statutes have changed.
    Instead, they proffer that they retain the authority to change impoundment requirements
    via the rulemaking process and apply the new requirements retroactively to existing
    impoundments without violating due process. In this regard, the Agencies distinguish
    Young J. Lee, which the Commonwealth Court quoted, noting that that dispute involved
    agency action which was adjudicative, rather than legislative, in nature. MSC responds
    that the Commonwealth Court was appropriately skeptical that the Agencies had newly-
    discovered powers under statutes that had been on the books for many years and, as
    such, correctly held that a substantial legal question was raised as to the legality of the
    regulations. Their argument is consistent with the Commonwealth Court’s expression
    that “Secretary Perry credibly testified that these regulations stem not from a change in
    the law, but from a change in DEP’s interpretation of long-standing law.” MSC, No. 573
    M.D. 2016, slip op. at 32.
    (i) Well-development impoundments
    There is little in the record to suggest any reinterpretation of a statute occurred
    with regard to well-development impoundments, which previously were minimally
    regulated and were only subject to permitting if at least five acres of earth would be
    [J-73-2017] - 33
    disturbed. See Brief for Appellants at 14-15 (providing background). Rather, Secretary
    Perry explained that, given the sheer size of the new well-development impoundments
    used for unconventional wells – ranging up to 30 million gallons – they are essentially in
    the nature of a dam and, as such, are appropriately regulated under the Dam Safety
    and Encroachments Act (“DSEA”).21 See N.T., Oct. 25, 2016, at 128. According to the
    record, although these impoundments generally store freshwater, the water may at
    times include other fluids used in well development which are not indigenous to the local
    watershed, the escape of which can pose a threat of pollution to the waters of the
    Commonwealth. See RAF at 31, reprinted in R.R. 786a.22
    The Commonwealth Court did not identify a substantial legal issue with regard
    DSEA’s authorization to regulate these impoundments. As noted, the court proceeded
    from the supposition that the Agencies’ interpretation of governing law had changed – a
    premise that does not apply with regard to well-development impoundments. Absent
    any particularized contention tending to cast doubt upon the Agencies’ position that
    DSEA allows for such regulations, see, e.g., 32 P.S. §693.5 (generally authorizing the
    EQB to adopt regulations relating to dams, reservoirs, water obstructions, and
    encroachments), there is little basis in the present record to believe the Agencies lacked
    the authority to promulgate Section 78a.59b(b).
    Moreover, by enjoining Section 78a.59b(b) without distinguishing between its two
    parts, the court stayed enforcement of the well-registration requirement, which it never
    21   Act of Nov. 26, 1978, P.L. 1375, No. 325 (as amended 32 P.S. §§693.1–693.27).
    22The Agencies now also allow operators to store and use mine-influenced water in well
    development impoundments, see 25 Pa. Code §78a.59b(h), although it is unclear
    whether operators requested such ability or find it desirable. The Agencies view such
    practice as beneficial because it reduces the consumption of fresh water from the
    Commonwealth’s waterways. See RAF at 32, reprinted in R.R. 787a.
    [J-73-2017] - 34
    discussed. Also, we are not convinced by the court’s reliance on Young J. Lee for
    principles sounding in procedural due process. Instead, we agree with the Agencies
    that that dispute was unlike the present one insofar as it dealt with adjudicative agency
    action, namely, the revocation of a license. The promulgation of legislative regulations
    involves procedural mechanisms absent from adjudications and, as such, is materially
    different for due process purposes. See Small v. Horn, 
    554 Pa. 600
    , 613, 
    722 A.2d 664
    , 671 (1998) (“It is well settled that procedural due process concerns are implicated
    only by adjudications, not by state actions that are legislative in character.” (footnote
    and citation omitted)). Nor does the fact that the regulation may affect existing well-
    development impoundments alone make it constitutionally unsound.          See generally
    Harmar 
    Coal, 452 Pa. at 92
    , 306 A.2d at 316-17 (observing that the state’s police
    power, including regulations maintaining the state’s water resources, may be applied to
    business operations even where doing so causes “the imposition of new costs”
    (citations omitted)).
    Accordingly, we conclude that, at this stage, MSC has not carried its burden to
    demonstrate a clear right to relief as to Section 78a.59b(b).
    (ii) Centralized impoundments
    The regulation governing centralized impoundments presents a different
    situation. Secretary Perry testified that the Agencies had not previously regulated them
    under SWMA on the view that they fell under SWMA’s exemption for drill cuttings from
    well sites. See 35 P.S. §6018.103 (defining solid waste to exclude drill cuttings from
    well sites and, in turn, defining drill cuttings broadly to include rock cuttings and any
    “related mineral residues created during the drilling of wells” which are disposed of at
    the well site).   He then provided an explanation which, although not entirely clear,
    appears to reflect that, given DEP’s experience with leakage from such impoundments,
    [J-73-2017] - 35
    the Agencies reconsidered the issue and concluded that centralized impoundments
    were not, in fact, located at well sites, meaning they could be regulated under SWMA;
    this was true because, as noted, SWMA’s definition of “drill cuttings” only encompasses
    well-drilling waste processed at the well site. See N.T., Oct. 25, 2016, at 134-35. Thus,
    Secretary Perry indicated that that the Agencies’ current position was that their prior
    interpretation, whereby centralized impoundments escaped SWMA regulation, “was an
    error.” 
    Id. at 135.
    It is on this basis that the Agencies now claim authority to require
    centralized impoundments to “operate in the same manner as all other residual waste
    transfer facilities located throughout the Commonwealth.” Brief for Appellants at 16.
    We do not doubt that leaks from centralized impoundments are potentially
    harmful to the environment. For present purposes, however, it is not apparent how
    such occurrences can support the concept that the impoundments are not part of the
    associated well site for SWMA purposes, whereas they were part of the well site before
    it was known that they could leak. This, in turn, gives rise to a substantial legal issue
    concerning the validity of the Agencies’ new interpretation of the scope of SWMA’s
    exclusion of “drill cuttings” from the definition of solid waste. Thus, the Commonwealth
    Court had an apparently reasonable basis to conclude that MSC had raised a
    substantial legal question concerning whether SWMA authorizes the promulgation of
    Section 78a.59c.
    As the interim relief was limited to existing centralized impoundments that would
    otherwise have to be closed or retrofitted, the court left Section 78a.59c in effect relative
    to any new impoundments. Thus, any harm to the Agencies and the public interest is
    limited to existing impoundments pending a final resolution on the merits. In terms of
    irreparable harm from refusing the injunction, the Agencies estimated that well
    operators would incur costs between $39,000,000 and $65,000,000 to retrofit existing
    [J-73-2017] - 36
    centralized impoundments. See RAF at 98, reprinted in R.R. 853a.23 Therefore, as
    concerns centralized impoundments, the Commonwealth Court had an apparently
    reasonable basis to conclude that the injury to MSC from denying the injunction was
    greater than the harm to the Agencies from granting it, and that granting interim relief
    would not adversely affect the public interest.
    Site restoration (Count V)
    As discussed, the Commonwealth Court rejected most of MSC’s claims
    regarding the new site-restoration regulations, see 25 Pa. Code §78a.65, except that it
    granted preliminary relief with respect to Section 78a.65(d), which relates to disturbed
    areas of land that are not included in a restoration plan and impervious surfaces that
    remain in the post-drilling timeframe. The court found that a substantial legal question
    had been raised as to whether that provision abrogated an exemption in the Clean
    Streams Law. See MSC, No. 573 M.D. 2016, slip op. at 38 (“To the extent Section
    78a.65(d) abrogates any requirements or exemptions in [t]he Clean Streams Law, MSC
    has raised a substantial legal question over its validity.”).
    The Agencies fault the court for finding a potential conflict between Section
    78a.65(d) and the Clean Streams Law, since the identified potential conflict is not with
    the enactment itself but with Section 102.8(n), a regulation promulgated pursuant to it.
    23 The Agencies object that there is no evidence that the monetary cost of denying the
    injunction would be incurred by MSC members because MSC did not prove that any of
    its members operate existing centralized impoundments. This argument is waived as
    the Agencies did not advance it before the Commonwealth Court, see MSC v. DEP &
    EQB, No. 573 M.D. 2016, Brief in Opposition to Application for Expedited Special Relief,
    at 36-40, and effectively assumed that MSC members would be affected. See, e.g., 
    id. at 38
    (referring to a three-year sunset provision for decommissioning centralized
    impoundments and proffering that during that period “MSC members can use these
    impoundments and may even apply for permission to keep using them”).
    [J-73-2017] - 37
    The Agencies argue, as well, that Section 78a.65(d) does not conflict with the
    regulation. Rather, they maintain that, as expressed in the RAF, the purpose of Section
    78a.65(d) is merely “to provide clarity between site restoration under Chapter 78[a] and
    compliance with Chapter 102.” RAF at 38, reprinted in R.R. 793a, quoted in Brief for
    Appellants at 59 (alteration supplied by Appellants).24 Separately, they also proffer that,
    even if an irreconcilable conflict existed between the two regulations, Section 78a.65(d)
    would nonetheless be enforceable as Section 102.8(n) is a general provision, whereas
    Section 78a.65(d) is a special provision enacted later in time.
    In response, MSC highlights that Act 13 requires erosion and sediment control
    measures to be implemented in accordance with the Clean Streams Law. See Brief for
    Appellee at 51 (citing 58 Pa.C.S. §3216).        MSC continues that “Section 78a.65(d)
    cannot ‘trump’ the Cleans Streams Law regulation,” 
    id., and argues
    that the mere
    possibility of a conflict is sufficient to raise a substantial legal issue for preliminary
    injunction purposes.     Notably, MSC does not reference any provision of the Clean
    Streams Law with which Section 78a.65(d) is purportedly in conflict.
    24   The RAF’s explanation in this regard elaborates that Section 78a.65(d) is
    needed to distinguish between (1) “areas not restored” – areas not
    included on the restoration plan and other remaining impervious areas and
    (2) areas restored to meadow in good condition or better or areas that
    otherwise incorporate antidegradation best available combination of
    technologies (ABACT) or nondischarge PCSM best management
    practices (BMPs). “Areas not restored” do not fall within the provisions in
    §102.8(n) and therefore must meet the requirements, inter alia, of
    §102.8(g). “Areas not restored” include areas where there are permanent
    structures or impervious surfaces, therefore runoff produced from these
    areas must be tributary to permanent PCSM BMPs to ensure the runoff
    will be managed in accordance with the requirements of §102.8.
    
    Id. [J-73-2017] -
    38
    Unlike with some of the prior counts, the Commonwealth Court’s grant of partial
    interim relief as to Count V was not based on any identified deficiency in the Agencies’
    statutory authorization to promulgate the rule in question. Rather, the court discerned
    that a potential conflict existed between Section 78a.65(d) and either the Clean Streams
    Law or Section 102.8(n)’s limited exemption from compliance with Section 102.8(g)’s
    additional requirements for a PCSM developed pursuant to the Clean Streams Law.
    As we read the two regulatory provisions, it does not appear that a conflict exists.
    Section 78a.56(d), on its face, only applies to impervious surfaces and disturbed areas
    which are not included in a site restoration plan, whereas the exemption reflected in
    Section 102.8(n) applies to a certain portion of a site restoration plan. Additionally, no
    Clean Streams Law provision has been identified that may be in conflict with Section
    78a.65(d). At most, there may be an incongruity between two regulations – Sections
    102.8(n) and 78a.65(d) – but only in the sense that the latter narrows the scope of
    circumstances in which the former applies. This in itself would be insufficient to show
    that Section 78a.65(d) is in conflict with (or unauthorized by) a legislative enactment.
    Even if we assume, for decisional purposes, that an irreconcilable conflict exists
    between the two regulations, it is clear that Section 78a.65(d) must prevail. As the
    Agencies point out, Section 102.8(n) applies generally to a number of regulated
    activities that require site restoration, whereas Section 78a.65(d) applies specifically to
    unconventional gas well sites. Further, Section 78a.65(d) was enacted later in time
    than Section 102.8(n).    Under these circumstances, Section 78a.65(d), being more
    specific, takes precedence over Section 102.8(n). See 1 Pa.C.S. §1933 (reflecting that,
    with an irreconcilable conflict between a general statute and a special statute enacted
    later in time, the special statute prevails over – and is construed as an exception to –
    the general one). See generally Saturday Family LP v. Commonwealth, 
    148 A.3d 931
    ,
    [J-73-2017] - 39
    935 (Pa. Cmwlth. 2016) (indicating that the rules of statutory construction apply to
    regulations in the Pennsylvania Code).
    Accordingly, we conclude that MSC has not demonstrated a clear right to relief in
    relation to Section 78a.65(d).
    D. Alleged drafting errors and overbreadth of the order
    Appellants raise two additional issues. They indicate that the Commonwealth
    Court’s order refers to the wrong section numbers of some of the regulations being
    preliminarily enjoined due to typographical errors. Second, they assert that the relief
    ordered in Count IV, relating to impoundments, was overbroad in that it failed to leave in
    place the mandate that well operators register well-development impoundments with
    DEP – an aspect of Section 78a.59b(b) which was not challenged.             See Brief for
    Appellants at 64-65.
    Both issues are moot. The Commonwealth Court amended its order to address
    the drafting errors Appellants have identified. Indeed, Appellants include the amended
    order (in which the typographical errors are corrected) as an appendix to their brief. In
    terms of the court’s failure to leave in place the impoundment-registration provision, any
    such omission on the court’s part is now immaterial in light of our decision to reverse the
    order insofar as it enjoins enforcement of Section 78a.59b(b).
    III. Conclusion
    For the reasons given above, we affirm in part and reverse in part the order of
    the Commonwealth Court. We affirm the grant of preliminary injunctive relief as to
    Counts I and II. As for Count IV, we affirm the grant of relief as to Section 78a.59c, but
    reverse the grant of relief as to Section 78a.59b(b). Finally, we reverse the grant of
    preliminary injunctive relief as to Count V.
    [J-73-2017] - 40
    Justices Baer, Todd, Dougherty, Wecht and Mundy join the opinion.
    Justice Donohue files a concurring and dissenting opinion.
    [J-73-2017] - 41