An operator shall maintain operating records on a form provided by the Secretary or an equivalent form and shall: Except as provided in §B of this regulation, record the information required in §C(1)—(3) of this regulation in 2-hour intervals for a recreational pool and for a public spa, and three times per day for a limited public-use and semipublic pool and record the information required in §C(4)—(9) of this regulation a minimum of three times per day for a public pool and spa, beginning 1/2 hour before opening; For a public pool or spa where an approved automatic controller is used, record the information required in §C of this regulation: A minimum of three times per day in conformance with the following schedule: The first recording of the day shall be made 1/2 hour before the pool or spa opens; The second recording shall be completed between 12 p.m. and 2 p.m.; and The final recording shall be completed 2 hours before closing; and More frequently if required by the Secretary due to conditions such as high bather load, high temperatures, bright sunlight, or inadequate water quality; Record the following information in the intervals required in §§A and B of this regulation: Disinfectant residual; Combined chlorine level, if chlorine is used; pH; Water clarity; Water temperature, if heated; Flow rate; Filter influent pressure and effluent pressure; Pump vacuum; and Total number of bathers; Record in 1-week intervals for a public pool and in 1-day intervals for a public spa: Total alkalinity level; Calcium hardness level; and Cyanuric acid level, if used; Record daily for a public pool or spa: The time of filter backwash or cleaning; An injury or accident at the pool or spa; Chemicals added to the water; and Malfunctioning or broken equipment; Date and sign each record sheet; Record the results of the following inspections in the specified intervals to complete a Pool and Spa Entrapment Hazards Checklist: Daily check before the facility is open to verify that: Drain covers, vacuum fitting covers, skimmer equalizer covers, and any other suction outlet covers are in place, secure, and unbroken; Skimmer baskets, weirs, lids, flow adjusters, and suction outlet lines are free of any blockage; Inlet and return covers or fittings are in place, secure, and unbroken; Safety warning signs are in place around the pool or spa, including emergency instructions and phone numbers; and On/off switches for pumps are clearly labeled and the location of the pumps is clearly identified; and Check all information required in §G(1) of this regulation before filling a pool or spa with water, after periodic maintenance, and after pool or filter cleaning procedures; Keep the records on the premises for a minimum of 3 years; and Submit the records to the Secretary upon request.