Section 216-RICR-50-15-4.6 - Measurement of Air Quality ConditionsA. The owner/operator of an ice arena shall measure air quality conditions in the ice rink according to the specifications in this section.B. Air quality conditions shall be measured as the concentration of carbon monoxide and, on and after July 1, 2018, as the concentration of nitrogen dioxide.C. Air quality conditions shall be measured at least three times during each week that the arena is open to the public, including at least two weekdays and at least one weekend day.D. Measurements shall be taken at a time of maximum frequency of use of the resurfacing machine, twenty (20) minutes after resurfacing is completed.E. If an edger is operated in the ice arena, additional air quality measurements shall be taken at least once per week: 1. Twenty (20) minutes after edging is completed, if the arena building is open to the public when edging occurs; or2. Before the public reoccupies the building, if the arena building is not open to the public when edging occurs.F. Measurements shall be taken at board height, inside the boards, and at the centerline of the ice.G. Carbon monoxide shall be measured using a device that accurately and reliably measures carbon monoxide levels in a range of zero (0) to one hundred (100) ppm in increments of 1 ppm.H. On and after July 1, 2018, nitrogen dioxide shall be measured using a device that accurately and reliably measures nitrogen dioxide in a range of zero (0) to five (5) ppm in increments of 0.1 ppm.I. Measuring devices shall be operated, stored, maintained and calibrated according the manufacturer's specifications.J. Measurements and information on measuring devices shall be documented and reported as specified in § 4.8 of this Part.216 R.I. Code R. 216-RICR-50-15-4.6