Untitled Texas Attorney General Opinion ( 2007 )


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  •                                ATTORNEY GENERAL                      OFTEXAS
    GREG        ABBOTT
    January 9,2007
    The Honorable Harvey Hilderbran                           OpinionNo.       GA-0498
    Chair, Committee on Culture, Recreation,
    and Tourism                                           Re: Whether the Edwards Aquifer Authority may
    Texas House of Representatives                            reduce groundwater withdrawal permit amounts
    Post Office Box 2910                                      for certain permit holders below the amount
    Austin, Texas 78768-2910                                  specified in section’ 1.16(e) of the Authority’s
    enabling act when, if allypermitted amounts are
    withdrawn, over 450,000 acre-feet of water will
    be withdrawn from the aquifer in a calendaryear
    (RQ-0469-GA)
    Dear Representative      Hilderbran:
    You ask about the power of the Edwards Aquifer Authority (the “Authority”) to reduce
    groundwater withdrawal permit amounts for certain permit holders below the amount specified in
    section 1.16(e) of the Authority’s enabling act when, if all of the permitted amounts are withdrawn,
    more than 450,000 acre-feet’ of water will be withdrawn from the Edwards Aquifer in a calendar
    year.’ We understand you to be particularly concerned about (I) existing irrigation users who, under
    section 1,16(e), are to receive permits that allow the withdrawal of not less than two acre-feet of
    water a year for each acre of land the user actually irrigated during the historical period’ (whom we
    will refer to as “irrigation users”) and (2) existing aquifer users who have operated wells for three
    or more years during the historical period and whose permits, under section 1.16(e), are to allow
    withdrawal of the average amount of water withdrawn annually during the historical period (whom
    we will refer to as “averagers”). See Act of May 30, 1993, 73d Leg., R.S., ch. 626, 5 1.16(e), 1993
    Tex. Gen. Laws 2350,236l [hereinafter the Act].
    ‘“An acre-foot is the amount of water that would cover an acre of land to one foot, approximately325,850
    gallons.” B&shop Y Medina County Underground Water Conservation Disf, 925 S.W.2d 618,624 n.1 (Tex. 1996).
    ?Ser Letter from Honorable Harvey Hilderbran, Chair, Committee on Culture, Recreation, and Tourism, Texas
    House of Representatives, to Honorable Greg Abbott, Attorney General of Texas (Mar. 16, 2006) (on file with the
    Opinion Committee, also available af http:Nwww.oag.state.tx.us) [hereinafter Request Letter].
    ‘An applicant for a regular permit must file a “declaration of historical use of underground water withdrawn
    from the aquifer during the historical period from June 1, 1972,tbrough May 31, 1993.” Act ofMay 30,1993,73dLeg.,
    R.S., ch. 626, 5 1.16(a), 1993 Tex. Gen. Laws 2350,2361. We use the term “historical period” throughout this opinion
    to refer to the 2 I -year period beginning June 1, 1972 and ending May 3 1, 1993.
    The Honorable Harvey Hilderbran              - Page 2            (GA-0498)
    I.      Constitutional        and Statutory Provisions
    A.     Texas Constitution          article XVI, section 59
    Under article XVI, section 59(a) ofthe Texas Constitution, conserving and developing water
    are “public rights and duties” about which the Legislature may adopt appropriate laws. TEX. CONST.
    art. XVI, § 59(a). Subsection (b) authorizes the creation of conservation and reclamation districts
    “with the authority to exercise such rights, privileges and functions concerning the subject matter
    of this [section] as may be conferred by law.” 
    Id. 5 59(b).
    B.     The 1993 Act creating the Edwards Aquifer Authority
    1.       Generally
    Consistently with its authority under article XVI, section 59(b), the Legislature in 1993
    created a “conservation and reclamatron district, to be known as the Edwards Aquifer Authority,
    in all or part of Atascosa, Bexar, Caldwell, Comal, Guadalupe, Hays, Medina, and Uvalde
    counties.” Act 5 1.02, at2351;4see also 
    id. 5 1.01,
    at2350-51 (articulating theLegislature’sreasons
    for creating the district). The Authority generally has “all of the powers, rights, and privileges
    necessary to manage, conserve, preserve, and protect the [Edwards AquiferI and to increase the
    recharge6 of, and prevent the waste7 or pollution’ of water in, the aquifer” and “all of the rights,
    ‘The Act has been amended by the following laws: Act of May 16,1995,74th Leg., RX, ch. 524,1995 Tex.
    Gen.Laws3280,3280;ActofMay29,1995,74thLeg.,R.S.,            ch.261,1995 Tex. Gen. Laws2505,2505-17;ActofMay
    6, 1999,76th Leg., RS:, ch. 163, 1999 Tex. Gen. Laws 634,63435; Act of May 25,2001,77th Leg., RX, ch. 1192,
    2001 Tex. Gen. Laws2696,2696-97;ActofMay27,2001,77thLeg.,             RX, ch. 966, $5 2.60-.62,2001 Tex. Gen. Laws
    1991,2021-22; ActofJune 1,2003,78thLeg.,R,S.,ch.        1112, $6.01(4),2003 Tex. Gen. Laws 3188,3192-93. None
    of these amendments affect the portions of the 1993 Act that are relevant here.
    ‘The 1993 Act defines the Edwards Aquifer as
    that portion of an arcuate belt of porous, water-bearing, predominately carbonate
    rocks known as the Edwards and AssociatedLimestones inthe Balcones Fault Zone
    extending from west to east ,to northeast from the hydrologic division near
    Brackettville in Kiiey County that separates underground flow toward the Coma1
    Springs and San Marcos Springs from underground flow to the Rio Grande Basin,
    through Uvalde, Media, Atascosa:~Bexar, Guadalupe, and Coma.1counties, and in
    Hays County south of the hydrologic division near Kyle that separates flow toward
    the San Marcos River from flow to the Colorado River Basin.
    Act § 1,03(l), at 2351; see also 
    id. 5 1.04,
    at 2353-55 (setting out the Authority’s boundaries).
    ‘The Act defines the term “recharge” to mean “increasing the supply of water to the aquifer by naturally
    occurring channels or artificial means.” 
    Id. $ 1.03(18),
    at 2352.
    ‘The Act defines the term “waste” to mean:
    (A) withdrawal of underground water from the aquifer at a rate and in an
    amount that causes or threatens to cause intrusion into the reservoir of water
    unsuitable for agricultural, gardening, domestic, or stock raising purposes;
    (continued...)
    The Honorable Harvey Hilderbran             - Page 3             (GA-0498)
    powers, privilegis, authority, functions, and duties provided by the general law of this state,
    including Chapters 50, 5 1, and 52,9 Water Cocle, applicable to au authority created under” article
    XVI, section 59 of the Texas Constitution. 
    Id. 5 1.08(a),
    at 2356 (footnotes added). The Act further
    requires the Authority’s governing board to adopt rules as necessary to carry out the Authority’s
    statutory powers and duties; to ensure compliance with permitting requirements and to regulate
    permits; and to issue orders enforcing the Act or the Authority’s rules. See.id. 5 1.1 l(a)-(c), at 2358;
    see also 
    id. 4 1.09,
    at 235657 (describing the nine-member board of directors).
    2.       Section 1.14: Limits on the total amount of water withdrawn
    Section 1.14 of the Act provides specifically for withdrawals from the aquifer and is one of
    two sections that is particularly at issue in your request. See Request Letter, supra note 2, at 1.
    Subsection (a) expressly requires that authorizations to withdraw water be limited to:
    ‘(...continned)
    (B) the flowing or producing of wells from the aquifer if the water
    produced is not used for a beneficialpurpose;
    (C) escape of underground water from the aquifer to any other reservoir
    that does not contain undergroundwater;
    (D) pollution or hannfid alterationof underground water in the aquiferby
    salt water or other deleterious matter admitted from another stratum or from the
    surface of the ground;
    (E) wilfully or negligently causing, suffering, or permitting underground
    Water from the aquifer to escape into any river, creek, natural watercourse,
    depression, lake, reservoir, drain, sewer, street, highway, road, or road ditch; or
    onto any land other than that of the owner of the well unless such discharge is
    authorized by permit, rule, or order issued by the [Texas Commission on
    EnvironmentalQuality] under Chapter 26, Water Code;
    (F) undergroundwater pumped fromthe aquiferfor irrigationthat escapes
    as irrigation tailwater onto land other than that of the owner of the well unless
    permissionhas been grantedby the occupantofthe land receiving the discharge;or
    (G) for water produced from an artesian well, “waste”has the meaning
    assigned by Section 11.205,Water Code.
    
    Id. 5 1.03(21),at
    2352; see also 
    id. $ 1.03(4),at
    2351 (defining “beneficialuse”); infra note 10 (quoting the Act’s
    definition of “beneficialuse”).
    ‘The Act defines the term “pollution”to mean “the alteration of the physical, thermal, chemical, or biological
    quality of any water in the state, or the contamination of any water in the state, that renders the water harmful,
    detrimental, or injuriousto humans, animal life, vegetation,property, or public health, safety, or welfare or that impairs
    the usefulness ofthe public enjoyment ofthe water for any lawful or reasonable purpose.” Act 5 1.03(17),al 2352.
    gWater Code chapter 52 was repealed in 1995 and its substance was moved to chapter 36 of the same code
    See Act of May 29,1995,74th Leg., R.S., ch. 933, $$2,6,1995 Tex. Gen. Laws 4673,4679-701.
    The Honorable Harvey Hilderbran           - Page 4            (GA-0498)
    (1) protect the water quality of the aquifer;
    (2) protect the water quality ofthe surface streams to which the
    aquifer provides springflow;
    (3) achieve water conservation;
    (4) maximize the beneficial            use” of water available          for
    withdrawal from the aquifer;
    (5) protect aquatic and wildlife habitat;
    (6) protect species that are designated as threatened                      or
    endangered under applicable federal or state law; and
    (7) provide for instream uses, bays, and estuaries.
    Act 5 1.14(a), at 2360 (footnote added). With certain exceptions, subsection (b) limits the amount
    of permitted withdrawals through December 3 1, 2007 to 450,000 acre-feet per year:
    Except as provided by Subsections (d), (t), and (h) of this
    section and Section 1.26 of this article, for the period ending
    December 3 1, 2007, the amount of permitted withdrawals from the
    aquifer may not exceed 450,000 acre-feet of water for each calendar
    year.
    
    Id. 5 1.14(b),
    at 2360. The four exceptions listed in subsection (b)-section 1.14(d), (f), and(h) and
    section 1.26-allow the Authority to adjust the total amount of acre-feet withdrawn from the aquifer
    in certain circumstances:
    .     Section 1.14(d) authorizes the Authority, “in consultation with
    appropriate state and federal agencies,” to “increase the
    maximum amount ofwithdrawals” ifthe Authority “determines
    that additional supplies are available.” 
    Id. 5 1.14(d),
    at 2360.
    .     Under section 1.14(f), “[ilfthe level of the aquifer is equal to or
    greater than 650 feet above mean sea level as measured at Well
    J-17 [located in Bexar County, see 
    id. 5 1.03(23),
    at 23521, the
    [Aluthority may authorize withdrawal from the San Antonio
    “For the Act’s purposes, the term “beneficial use” means “the use of the amount of water that is economically
    necessary for a purpose authorized by law, when reasonable intelligence and reasonable diligence are used in applying
    the water to that purpose.” Act 5 1.03(4), at 235 1.
    The Honorable Harvey Hilderbran        - Page 5          (GA-0498)
    pool, on an uninterruptible basis, of permitted amounts. If the
    level of the aquifer is equal to or greater than 845 feet at Well
    J-27 [located in Uvalde County, see 
    id. 5 1.03(24),
    at 23531, the
    [Aluthority may authorize withdrawal from theuvalde pool, on
    an uninterruptible basis, of permitted amounts.” 
    Id. § 1.14(f),
                            at 2360. The additional withdrawals must be limited to ensure
    that “springflows are not affected during critical drought
    conditions.” 
    Id. . Section
    1.140 authorizes the Authority to implement, enforce,
    and revise water management practices, procedures, and
    methods to ensure that, “not later than December 3 1,2012, the
    continuous minimum springflows ofthe Coma1 Springs and the
    San Marcos Springs are maintained to protect endangered and
    threatened species to the extent required by federal law.” 
    Id. § l.l4(h),,at2360.
    .    Section 1.26 requires the Authority to prepare a critical period
    management plan that distinguishes between discretionary and
    nondiscretionary     use; requires that all discretionary use be
    reduced to the “maximum extent feasible”; requires “utility
    pricing, to the maximum extent feasible, to limit discretionary
    use by” water utility customers; and requires permitted or
    contractual users, “to the extent further reductions are
    necessary,” to reduce nondiscretionary use in line with certain
    statutory priorities. 
    Id. 5 1.26,,at
    2363-64.
    3.       Section 1.16 and others: Permitting requirements,
    No person may withdraw water from the aquifer or construct a well without a permit from
    the Authority except “as provided by Sections 1.17 [allowing persons who own certain producing
    wells on the Act’s effective date to continue to withdraw water until the Authority takes final action
    on permits] and 1.33 [exempting wells that produce no more than 25,000 gallons of water per day
    for domestic or livestock use from metering requirements] .” 
    Id. § 1.15(a)-(b),
    at 2360-6 1. A person
    who is required to obtain a permit but who withdraws water without a permit may be subject to an
    administrative or civil penalty and be enjoined. See 
    id. $5 1.37(a),
    .38, .40, at 2366,236s.
    The Act expressly authorizes the Authority to issue three types of permits: “regular permits,
    term permits, and emergency permits.” 
    Id. 5 1.15(c),
    at 2361. The Act recognizes two types of
    regular permits: an “initial regular permit” and an “additional regular permit.” See 
    id. $5 1.16,
    .18,
    at 2361,2362. Your questions concern only initial regular permits.
    To obtain an initial regular permit, section 1.16 requires an existing user to tile “a declaration
    of historical use of underground water withdrawn from the aquifer” during the historical period. 
    Id. The Honorable
    Harvey Hilderbran           - Page 6             (GA-0498)
    § 1.16(a), at 2361; see also supra note 3 (defining “historical period” for purposes of this opinion).
    Upon receiving the declaration and the requisite fees, the Authority must grant an initial regular
    permit if the applicant has established “by convincing evidence beneficial use of underground water
    from the aquifer.” Act § 1.16(d), at 2361. The “maximum rate and total volume of water that the
    water user may withdraw in a calendar year” is specified in each permit. 
    Id. $ 1.15(d),
    at 2361.
    Section 1.16(e) provides the maximum total volume ofwater certain types of users may be,permitted
    to withdraw (each sentence is numbered in brackets for purposes of the analysis that follows):
    [l] To the extent water is available for permitting, the
    [Authority’s governing] board shall issue the existing user a permit
    for withdrawal of an amount of water equal to the user’s maximum
    beneficial use of water without waste during any one calendar year of
    the historical period. [2] If a water user does not have historical use
    for a full year, then the authority shall issue a permit for withdrawal
    based on an amountofwater that would normally be beneficially used
    without waste for the intended purpose for a calendar year. [3] If the
    total amount of water determined to have been beneficially used
    without waste under this subsection exceeds the amount of water
    available for permitting, the [Aluthority shall adjust the amount of
    water authorized for withdrawal under the permits proportionately to
    meet the amount available for permitting. [4] An existing irrigation
    user shall receive a permit for not less than two acre-feet a year for
    each acre of land the user actually irrigated in any one calendar year
    during the historical period. [5] An existing user who has operated
    a well for three or more years during the historical period shall
    receive a permit for at least the average amount of water withdrawn
    annually during the historical period.
    
    Id. § 1.16(e),
    at 2361
    II.     Facts
    You inform us that the Authority took applications for initial regular permits from 1996
    through November 2005. Request Letter, supra note 2, at 1. After all the permits were issued, “it
    was determined that the sum of all these permits exceeded the 450,000 acre feet” withdrawal cap.
    
    Id. at 2.
    Indeed, according to the Authority, “[tlhe total of all statutory minimums is 521,439.722”
    acre-feet per year.” To bring the total amount of permitted withdrawals down to 450,000 acre-feet
    “Letter from Darcy A. Frownfelter, Kemp Smith L.L.P., on behalf of the Edwards Aquifer Authority, to
    Honorable Greg Abbott, Attorney General ofTexas, at 7 (July 21 I 2006) [hereinafter Authority Briefj; accordEowARos
    AQUIFERAUTHORITY,     FACTSHEET:FM& GROUNDWATER          WITHDRAWAL      PERMITAMOUNTS       ESTABLISHED    2 (Nov. 30,
    ZOOS),mailable athttp://~w.edwardsaquifer.org/pdfs/fact%2OSheets~inal%2OOrder%2OA~achment.pdf(last              visited
    Dec. 12,2006).
    The Honorable Harvey Hilderbran           - Page 7             (GA-0498)
    per year, according to the Authority, it added “every permit holder’s maximum historic use together
    and [then] proportionally reduc[ed] the sum of’ the amount allowed under each regular permit.”
    The Authority’s rules refer to the proportionally reduced withdrawal amount as “senior rights” or
    “uninterruptible withdrawal amount.“‘3 See EDWIWX AQUIFERAUTHORITY,EDWARDSAQUIFER
    AUTHORITY RULES $5 702.1(b)(56), (64), 711.164(d), available at http://www.edwardsaquifer
    .org/pdfs/rules/Final-Rules.pdf    (last visited Dec. 12, 2006) [hereinafter EDWARDS AQUIFER
    AUTHORITYRULES]. Under the Authority’s rules, the amount of water that the Authority
    may permit to be withdrawn on an unintermptible basis as senior
    rights pursuant to initial regular permits shall not exceed 450,000
    acre-feet for each calendar year under the following Aquifer
    conditions:
    (1) for wells in the San Antonio Pool,     the water level of
    the Aquifer +s measured at well J-17 is equal to or greater than 650
    feet above mean sea level;
    (2) for wells in the Uvalde Pool,       the water level of the
    Aquifer as measured at well J-27 is equal to or greater than 845 feet
    above mean sea level.
    
    Id. 5 7
    11.164(a); cf Act $ 1.14(f), at 2360 (authorizing the Authority to allow withdrawals from the
    San Antonio pool if the water level at well J-17 is equal to or greater than 650 feet above mean sea
    level or from the Uvalde pool if the water level at well J-27 is equal to or greater than 845 feet above
    mean sea level). In some cases, the senior rights “fell below the statutory minimum provided in
    Section 1.16(e) of the Act.” Request Letter, supra note 2, at 2.
    To address the fact that some of the allotted senior rights fell below the withdrawal amounts
    that the fourth and fifth sentences of section 1.16(e) set out, the Authority granted permit holders
    interruptible, or “junior,” rights that make up the difference between the statutory minimum and the
    proportionally reduced amount. See FACT SHEETON SENIOR AND JUNIOR AMOUNTS, sugra note 12;
    see EDWARDSAQUIFER AUTHOXUTY             RULES $5 702.1(b)(35)-(36), 711.164, ,176. A junior-rights
    holder with a well in the San Antonio Pool may withdraw water under the junior rights “whenever
    the water level of the Aquifer as measured at well J-17 is greater than 665 feet above mean sea
    level”; ajunior-rights holder with a well in the Uvalde Pool may exercise the junior rights “whenever
    the water level of the Aquifer as measured at well J-27 is greater than 865 feet above mean sea
    ‘zE~~~~A~~~~~~A~~~~~~~,   FACTSHEET:UN~TERRUPTI~LEC’SENIOR”)ANDINTERRUPTIBLEC‘JUNIOR”)
    AUTHORIZEDAMOUNTS,AND INITIALREGULARPEFGWTS(Jan. 4, 2006), available af http:l/www.edwardsaquifer.org
    /pdfs/fact%20SheetsRinterruptible%20and%2Ointe~uptib~e%2Oamounts.pdf(last           visitedDec. 12,2006) [hereinafter
    FACTSHEETON SENIORAND JCNORAMOUNTS].
    “The term “uninte~uptible” is a misnomer; senior rights may, in fact, be reduced, but “only when the Authority
    declares a stage ofthe Demand Management/Critical Period Management Rules to be in effect.” Id.; see also Act 5 1.26,
    at 2363-64 (providing for a critical period management plan).
    The Honorable Harvey Hilderbran      - Page 8         (GA-0498)
    level.” EDWARDS AQUIFERAUTHORITYRULES5 715.504(b)-(c). Thus, for example, an irrigation
    user whose senior rights allow the withdrawal of 1.6 acre,feet per year may be provided with
    junior rights allowing the user to withdraw an additional 0.4 acre-feet per year, bringing the total
    withdrawal amount allowed under the permit to 2 acre-feet of water per year (assuming the
    relevant well level is high enough), the number set out in section l.l6(e)‘s fourth sentence. See 
    id. 5 711,176(b)(6).
    III.    Analysis
    Based on the Authority’s actions, you pose three questions:
    1) Is the [Authority] statutorily authorized to reduce the
    uninterruptible groundwaterwithdrawal     rights ofpermit holders to an
    amount that is below their statutory minimum as provided in Section
    1.16(e) of the Act?
    2) Does the [Authority] have the statutory authority to issue
    a type of permit that contains interruptible “junior” withdrawal rights
    which are not specifically authorized or included m the types of
    permits authorized by the [Authority’s] enabling legislation?
    3) If the [Authority] can reduce permit holders to amounts
    below their statutory minimums, should these permit holders receive
    compensation?
    Request Letter, supra note 2, at 2. Your third question raises an issue implicated in pending
    litigation. See Plaintiffs Original Petition for Review and Suit for Declaratory Relief and Inverse
    Condemnation, 777 Operating Co. v. Edwards Aquifer Auth., No. 05-lo-17660-CV (38th Dist. Ct.
    Oct. 27,2005). This office typically does not issue an opinion on a question that we know to,be the
    subject of pending litigation. See Tex. Att’y Gen. Op. No. GA-0399 (2006) at 3 n.5. Consequently,
    we do not answer your third question,
    In examining your remaining questions, we recognizethat the Authority “may exercise only
    such powers” as the Legislature has expressly delegated to it “or which exist by clear and
    unquestioned implication.” T&City Fresh Water Supply Dist. No. 2 v. Mann, 142 S.W.2d 945,946
    (Tex. 1940); accord Hurlingen Irrigation Dist. Cameron County No. 1 v. CaprockCommc ‘ns Corp.,
    49 S.W.3d 520,536 (Tex. App.-Corpus        Christi 2001, pet. denied); see also Tex. Att’y Gen. Op.
    No. GA-0284 (2004) at 3 (limiting the powers of a waterway,and navigation district to only those
    delegated by statute). On the other hand, a court will give “some deference” to an administrative
    agency’s reasonable construction of an ambiguous statute that the agency is charged with enforcing.
    Fiess Y. State Farm Lloyds, 202 S.W.3d 744,747 (Tex. 2006); see also Act § 1.1 l(a)-(c), at 2358
    (delegating enforcement powers to the Authority).
    The Honorable Harvey fiilderbran     - Page 9           (GA-0498)
    A.   Whether the Authority may reduce groundwater withdrawal             rights to an amount
    below a statutory minimum
    Section 1.16(e) provides permits for four types of users: an existing user, a user without
    historical use for a full year, an irrigation user, and an averager. See Act 5 1.16(e), at 2361. Your
    question requires us to consider whether, in light of the facts as we have assumed them, the
    Authority reasonably has determined that users whose withdrawal amounts are set in accordance
    with the fourth and fifth sentences of section 1.16(e)-irrigation    users and averagers-are    subject
    to proportional reduction.
    The Texas Supreme Court twice has stated that,irrigation users and averagers are not subject
    to a “downward adjustment” under section 1.16(e) if insufficient water is available. 
    Burshop, 925 S.W.2d at 624
    n.2; Bragg v. Edwards Aqu$r Auth., 
    71 S.W.3d 729
    , 73 1 (Tex. 2002): In a 1996
    case, Barshop v. Medina County Underground Water Conservation District, the court summarized
    section 1.16(e):
    The Act entitles an existing user to a permit for an amount of
    water equal to the user’s maximum beneficial use of water during any
    one calendar year of the historical period, unless the sum-total
    amount of such use tbroughoutthe aquifer exceeds 450,000 acre-feet.
    If this occurs, the Authority is required to adjust proportionately the
    amount of water authorized for withdrawal under the permits to meet
    the cap.
    
    Barshop, 925 S.W.2d at 624
    (citations and footnote omitted). In a footnote following this summary,
    the court states that “[a]n existing user can avoid this downward adjustment” in two circumstances:
    First, an existing user who has operated a well for three or more years
    during the historical period shall receive a permit for at least the
    average amount of water withdrawn annually during the historical
    period. Second, an existing irrigation user shall receive a permit for
    not less tbantwo acre-feet a year (approximately 650,000 gallons) for
    each acre of land the user actually irrigated in any one calendar year
    during the historical period.
    
    Id. at 624
    n.2 (citations omitted). The court in 2002 repeated the footnote’s substance in Bragg v.
    Edwards Aquifer Authority. See 
    Bragg, 71 S.W.3d at 73
    l-32.
    Given the court’s interpretation, we must conclude that the Act unambiguously precludes the
    Authority from reducing withdrawal amounts for irrigation users below “two acre-feet a year for
    each acre of land the user actually irrigated in any one calendar year during the historical period.”
    Act $ 1,16(e), at 2361. Likewise, the Authority may not reduce averagers’ withdrawal amounts
    below “the average amount of water withdrawn annually during the historical period.” 
    Id. The Authority’s
    construction, which is inconsistent with the Texas Supreme Court’s express statement,
    is thus unreasonable.
    The Honorable Harvey Hilderbran      - Page 10         (GA-0498)
    B.    Whether the Authority may issue a type of permit that contains interruptible
    “junior” withdrawal rights
    You next ask about the Authority’s power to issue a permit granting interruptible “junior”
    withdrawal rights. See Request Letter, supra note 2, at 2. Your letter notes that the Act does not
    specifically authorize such withdrawal rights. See 
    id. The Authority
    contends that the junior/senior rules aid in reconciling the 450,000 acre-feet
    withdrawal cap with the minimums articulated in section 1.16(e) of the Act. See Authority Brief,
    supra note 11, at 12. Moreover, the Authority suggests that its construction of the Act is reasonable
    and is therefore entitled to deference. See 
    id. at 6-7.
    The Legislature did not provide any authority in the Act generally for issuing permits with
    interruptible withdrawal rights unless the permits are term permits. The Act permits the Authority
    to issue “interruptible term permits for withdrawal” for a term not to exceed ten years. See Act
    5 1,19(a), at 2362. Term permit holders may not withdraw water from the San Antonio pool unless
    the aquifer level is higher than 665 feet above sea level or from the Uvalde pool unless the aquifer
    level is higher than 865 feet above sea level. See 
    id. 5 1.19(b)-(c).
    While the conditions on the
    junior permits state the same aquifer levels as the Act sets for term permits, the Authority does not
    refer to the junior permits as term permits, and we have no information that the permits’ terms are
    limited to ten years or less, as term permits are required to be.
    Moreover, the Act sets out a detailed permit system that provides for three types of
    permits-regular,   term, and emergency. See 
    id. 5s 1.16,
    .18, .19, .20, at 2361-62. Giventhe Act’s
    detailed scheme, we cannot find that the Act “clearly grant[s]” the Authority power to create a new
    type ofregular permit. See Tri-City Fresh Water Supply Dist. No. 2,142 S.W.2d at 948; accordSo.
    Plains Lamesa R.R. v. High Plains Underground Water Conservation Dist. No. I, 
    52 S.W.3d 770
    ,
    779 (Tex. App.-Amarillo      2001, no pet.); Lower Nueces River Water Supply Dist. v. Cartwright,
    
    274 S.W.2d 199
    , 207 (Tex. Civ. App.-San        Antonio 1954, writ ref d n.r.e.); cJ: Quincy Lee Co. v.
    Loda & Bain Eng’rs, Inc., 602 S.W.2d 262,264 (Tex. 1980) (stating that the Baytield Public Utility
    District may exercise no authority that the Legislature has not clearly granted). Nor does anything
    in chapter 36 or 5 1 of the Water Code authorize the Authority to create a new type of permit. See
    TEX. WATER CODE ANN. @ 36.101(a), .113(a), .114(a), 51.122 (Vernon Supp. 2006), 5 51.127
    (Vernon 2000); see also Act 3 1.08(a), at 2356 (providing the Authority with powers granted under
    chapters 36 and ,51 of the Water Code). Lacking a clear grant of authority, we must conclude that
    the Authority has no statutory authority to issue a type of regular permit that contains interruptible
    junior withdrawal rights, and its construction to the contrary is unreasonable.
    The Honorable Harvey Hilderbran     - Page 11        (GA-0498)
    SUMMARY
    The Texas Legislature has not authorized the Edwards Aquifer
    Authority to reduce the withdrawal rights of irrigation users and
    averagers, who have received permits under section 1.16(e), sentences
    4 and 5 of the Authority’s enabling act. See Act of May 30, 1993,
    73d Leg., R.S., ch. 626, 3 1.16(e), 1993 Tex. Gen. Laws 2350,2361.
    The Legislature also has not authorized the Authority to issue
    interruptible junior withdrawal rights.
    KENT C. SULLIVAN
    First Assistant Attorney General
    ELLEN L. WITT
    Deputy Attorney General for Legal Counsel
    NANCY S. FULLER
    Chair, Opinion Committee
    Kymberly K. Oltrogge
    Assistant Attorney General, Opinion Committee