Section NR 809.68 - Reporting and recordkeeping requirements for Stage 2 DBP(1) REPORTING. (a) Water suppliers shall report all of the following information for each monitoring location to the department no later than 10 days after the end of any quarter in which monitoring is required: 1. Number of samples taken during the quarter.2. Date and results of each sample taken during the quarter.3. Arithmetic average of quarterly results for the four quarters immediately previous for each monitoring location (LRAA), beginning at the end of the fourth calendar quarter that follows the compliance date and at the end of each subsequent quarter. If the LRAA calculated based on fewer than four quarters of data would cause the MCL to be exceeded regardless of the monitoring results of subsequent quarters, the water supplier shall report this information to the department as part of the first report due following the compliance date or anytime thereafter that this determination is made. If the public water system is required to conduct monitoring at a frequency that is less than quarterly, the water supplier shall make compliance calculations beginning with the first compliance sample taken after the compliance date, unless the public water system is required to conduct increased monitoring under s. NR 809.63(2).4. If the MCL for TTHM or HAA5s was violated at any monitoring location.5. Any operational evaluation levels that were exceeded during the quarter and, if so, the location and date, and the calculated TTHM and HAA5 levels.(b) Water suppliers for surface water or groundwater under the direct influence of surface water systems seeking to qualify for or remain on reduced TTHM or HAA5 monitoring, shall report the following source water TOC information for each treatment plant that treats surface water or groundwater under the direct influence of surface water to the department no later than 10 days after the end of any quarter in which monitoring is required:1. The number of source water TOC samples taken each month during the previous quarter.2. The date and result of each sample taken during the previous quarter.3. The quarterly average of monthly samples taken during the previous quarter or the result of the quarterly sample.4. The running annual average (RAA) of quarterly averages from the past four quarters.5. Whether the RAA exceeded 4.0 mg/L.(c) The department may choose to perform calculations and determine whether the MCL was exceeded or the public water system is eligible for reduced monitoring in lieu of having the water supplier report that information(2) RECORDKEEPING. The water supplier shall retain any s. NR 809.62 monitoring plans and monitoring results collected under s. NR 809.61 as required by s. NR 809.82.Wis. Admin. Code Department of Natural Resources § NR 809.68
CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; correction in (2) made under s. 13.92(4) (b) 7, Stats., Register November 2010 No. 659.Amended by, CR 15-049: am. (1) (a) 3., (2) Register March 2016 No. 723, eff.4/1/2016