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TITLE 30ENVIRONMENTAL QUALITY
PART 1TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
CHAPTER 290PUBLIC DRINKING WATER
SUBCHAPTER DRULES AND REGULATIONS FOR PUBLIC WATER SYSTEMS
RULE §290.45Minimum Water System Capacity Requirements

    (C) If the executive director finds that failure of the service or other threat to public health and safety is imminent, the executive director may issue written notification of the executive director's final decision to revoke or revise an alternative capacity requirement at any time.

(h) Affected utilities as defined in TWC §13.1394. This subsection applies to all affected utilities, as defined in TWC §13.1394, and is in addition to any other requirements pertaining to emergency power found in this chapter.

  (1) Affected utilities must provide one or more of the following options to ensure the emergency operation of its water system during an extended power outage at a minimum of 20 psi, or a pressure approved by the executive director, whichever is applicable, and in accordance with the affected utility's approved emergency preparedness plan:

    (A) the maintenance of automatically starting auxiliary generators;

    (B) the sharing of auxiliary generator capacity with one or more affected utilities, including through participation in a statewide mutual aid program;

    (C) the negotiation of leasing and contracting agreements, including emergency mutual aid agreements with other retail public utilities, exempt utilities, or providers, or conveyers of potable water or raw water service, if the agreements provide for coordination with the division of emergency management in the governor's office;

    (D) the use of portable generators capable of serving multiple facilities equipped with quick-connect systems;

    (E) the use of on-site electrical generation or electrical distribution generation facilities;

    (F) hardening of the electric transmission and electric distribution system against damage from natural disasters during an extended power outage;

    (G) the maintenance of direct engine or right-angle drives;

    (H) designation of the water system as a critical load facility or redundant, isolated or dedicated electrical feeds;

    (I) water storage capabilities with sufficient storage to provide water to customers during an extended power outage;

    (J) water supplies can be delivered from outside the service area of the affected utility by opening an emergency interconnect or using a water hauler;

    (K) affected utility has ability to provide water through artesian flows;

    (L) affected utility has ability to open valves between pressure zones to provide redundant interconnectivity between pressure zones;

    (M) affected utility will implement emergency water demand rules to maintain emergency operations; or

    (N) any other alternative determined by the executive director to be acceptable.

  (2) Each affected utility that supplies, provides, or conveys raw surface water shall include in its emergency preparedness plan, under paragraph (1) of this subsection, provisions for demonstrating the capability of each raw water intake pump station, pump station, and pressure facility necessary to provide raw water service to its wholesale customers during emergencies. This does not apply to raw water services that are unnecessary or otherwise subject to interruption or curtailment during emergencies under a contract.

  (3) Emergency generators used as part of an approved emergency preparedness plan must be inspected, maintained, tested, and operated in accordance with the manufacturer's specifications and as outlined in 290.46(m)(8) of this title.

  (4) An affected utility may adopt and is encouraged to enforce limitations on water use while the utility is providing emergency operations.

  (5) As soon as safe and practicable following the occurrence of a natural disaster, an affected utility must operate in accordance with its approved emergency preparedness plan, which may include using elevated storage. An affected utility may meet the requirements of TWC §13.1394 including having a currently approved emergency preparedness plan, in lieu of any other rules regarding elevated storage requirements, provided that, under normal operating conditions, the affected utility continues to meet the pressure requirements of §290.46(r) of this title (related to Minimum Acceptable Operating Practices for Public Drinking Water Systems) and the production, treatment, total storage, and service pump capacity requirements of this subchapter.

  (6) An affected utility must maintain on-site, or make readily available during emergency operations, an amount of fuel necessary to operate any required emergency power equipment necessary to maintain emergency operations for at least 48 hours.

  (7) Each affected utility must implement its emergency preparedness plan upon approval by the executive director.

(i) Affected utilities as defined by TWC §13.1395. This subsection applies to all affected utilities as defined by TWC §13.1395 and is in addition to any other requirements pertaining to emergency power found in this subchapter.

  (1) Affected utilities must provide one of the following options of sufficient power to meet the capacity requirements of paragraph (1) or (2) of this subsection, whichever is applicable, and in accordance with the affected utility's approved emergency preparedness plan:

    (A) the maintenance of automatically starting auxiliary generators;

    (B) the sharing of auxiliary generator capacity with one or more affected utilities;

    (C) the negotiation of leasing and contracting agreements, including emergency mutual aid agreements with other retail public utilities, exempt utilities, or providers, or conveyors of potable or raw water service, if the agreements provide for coordination with the division of emergency management in the governor's office;

    (D) the use of portable generators capable of serving multiple facilities equipped with quick-connect systems;

    (E) the use of on-site electrical generation or electrical distributed generation facilities;

    (F) hardening of the electric transmission and electric distribution system against damage from natural disasters during an extended power outage;

    (G) the maintenance of direct engine or right-angle drives; or

    (H) any other alternative determined by the executive director to be acceptable.

  (2) Each affected utility that supplies, provides, or conveys surface water to wholesale customers shall install and maintain automatically starting auxiliary generators or distributive generation facilities for each raw water intake pump station, water treatment plant, pump station, and pressure facility necessary to provide water to its wholesale customers. This does not apply to raw water services that are unnecessary or otherwise subject to interruption or curtailment during emergencies under a contract.

  (3) Emergency generators used as part of an approved emergency preparedness plan must be maintained, tested, and operated in accordance with Level 2 maintenance requirements contained in the current NFPA 110 Standard and the manufacturers specifications if the affected utility serves 1,000 connections or greater, or the manufacturer's specifications and as outlined in §290.46(m)(8) of this title for affected utilities serving fewer than 1,000 connections.

  (4) An affected utility may adopt and is encouraged to enforce limitations on water use while the utility is providing emergency operations.

  (5) As soon as safe and practicable following the occurrence of a natural disaster, an affected utility must operate in accordance with its approved emergency preparedness plan, which may include using elevated storage. An affected utility may meet the requirements of TWC §13.1395, including having a currently approved emergency preparedness plan, in lieu of any other rules regarding elevated storage requirements, provided that, under normal operating conditions, the affected utility continues to meet the pressure requirements of §290.46(r) of this title and the production, treatment, total storage and service pump capacity requirements of this subchapter.

  (6) An affected utility must maintain on-site, or make readily available during emergency operations, an amount of fuel necessary to operate any required emergency power equipment necessary to maintain emergency operations for at least 48 hours.

  (7) Each affected utility must implement their emergency preparedness plan upon approval by the executive director.


Source Note: The provisions of this §290.45 adopted to be effective October 1, 1992, 17 TexReg 6455; amended to be effective November 3, 1995, 20 TexReg 8620; amended to be effective February 4, 1999, 24 TexReg 731; amended to be effective September 13, 2000, 25 TexReg 8880; amended to be effective May 16, 2002, 27 TexReg 4127; amended to be effective January 30, 2003, 28 TexReg 697; amended to be effective February 19, 2004, 29 TexReg 1373; amended to be effective January 9, 2008, 33 TexReg 198; amended to be effective December 10, 2009, 34 TexReg 8744; amended to be effective September 11, 2014, 39 TexReg7145; amended to be effective July 30, 2015, 40 TexReg 4769; amended to be effective December 21, 2023, 48 TexReg 7585

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