Subchapter E. MONITORING
110.501. Metering and measuring requirement.
110.502. Recording frequency.
110.503. Measuring requirement in critical water planning areas.
§ 110.501. Metering and measuring requirement.
(a) Each public water supply agency shall measure its withdrawals and water transferred through interconnection with another public water supply agency by means of a continuous-recording device or flow meter, accurate to within 5% of actual flow.
(b) Each hydropower facility shall measure its withdrawal and instream hydropower use by means of a continuous-recording device or flow meter or shall calculate its withdrawal and use based upon electrical generation or turbine flow rates or other method, accurate to within 5% of actual flow.
(c) Each person whose total withdrawal from a point of withdrawal, or from multiple points of withdrawal operated as a system either concurrently or sequentially, within a watershed equals or exceeds an average rate of 50,000 gallons per day in any 30-day period and each person who obtains water through interconnection with another person in an amount that exceeds an average rate of 100,000 gallons per day in any 30-day period shall measure or calculate:
(1) Withdrawals, and water obtained through interconnection with another person by means of a continuous-recording device or flow meter or other method, accurate to within 5% of actual flow.
(2) Consumptive uses by a means or method accurate to within 10% of actual flow.
(d) Upon written request from a registrant, the Department may grant exceptions to the 5% or 10% performance standards, if maintenance of the standard is not technically feasible or economically practicable.
(e) A person who is subject to § 110.204(b) (relating to voluntary registration) or § 110.301 (relating to reporting requirement) but is not subject to subsections (a)(c) shall measure or calculate the withdrawals or uses by a means or method, which is based upon established scientific principles, design or manufacturers product specifications, or research results.
§ 110.502. Recording frequency.
Withdrawals and uses subject to § 110.501(a) and (b) (relating to metering and measuring requirement) shall be recorded on a daily basis. Withdrawals and water obtained through interconnection with another person subject to § 110.501(c) shall be recorded on a weekly basis. Uses subject to § 110.501(c) shall be recorded monthly. Withdrawals and uses subject to § 110.501(e) shall be recorded monthly.
§ 110.503. Measuring requirement in critical water planning areas.
(a) The Department may require persons subject to § 110.201 (relating to registration requirement) located within a critical water planning area to measure or calculate their withdrawals and uses by means of a more accurate measuring method (but not more accurate than 5%) and record the measurements on a more frequent basis (not to exceed daily) than required in accordance with § § 110.501 and 110.502 (relating to metering and measuring requirement; and recording frequency), if the Department determines that more accurate data is required for the development of a critical area resource plan in a watershed within a critical water planning area. Upon receipt of written notice from the Department, including an explanation of the basis for the determination, those persons shall begin the measurements or calculations within 180 days.
(b) In making the determination, the Department will consider the necessity of requiring more accurate data and having it recorded more frequently than required by § § 110.501 and 110.502, from various categories of water users, for effective critical area resource planning in the specific watershed and the costs to registrants of providing the accuracy and frequency.
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