HAR §11-20-45.3. received a very small system waiver under section 11-20-45

2(e), plus you meet the reduced monitoring criteria in subsection (d)(1), and you do not change or add monitoring locations from those used for compliance monitoring under section 11-20-45.1. If your monitoring locations under this section differ from your monitoring locations under section 11-20-45.1, you may not remain on reduced monitoring after the dates identified in paragraph (a)(3) for compliance with this section. (i) Requirements for remaining on increased TTHM and HAA5 monitoring based on section 11-20-45.1 results. If you were on increased monitoring under section 11-20-45.1(c)(2)(A), you must remain on increased monitoring until you qualify for a return to routine monitoring under subsection (f)(3). You must conduct increased monitoring under subsection (f) at the monitoring locations in the monitoring plan developed under subsection (c) beginning at the date identified in subsection (a)(3) for compliance with this section and remain on increased monitoring until you qualify for a return to routine monitoring under subsection (f)(3). (j) Reporting and recordkeeping requirements. (1) Reporting. (A) You must report the following information for each monitoring location to the State within 10 days of the end of any quarter in which monitoring is required: (i) Number of samples taken during the last quarter. (ii) Date and results of each sample taken during the last quarter. (iii) Arithmetic average of quarterly results for the last four quarters 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 20-227 3376 §11-20-45.3 based on fewer than four quarters of data would cause the MCL to be exceeded regardless of the monitoring results of subsequent quarters, you must report this information to the State as part of the first report due following the compliance date or anytime thereafter that this determination is made. If you are required to conduct monitoring at a frequency that is less than quarterly, you must make compliance calculations beginning with the first compliance sample taken after the compliance date, unless you are required to conduct increased monitoring under subsection (f). (iv) Whether, based on subsection 11-20-4.1(b)(2) and this section, the MCL was violated at any monitoring location. (v) 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) If you are a subpart H system seeking to qualify for or remain on reduced TTHM/HAA5 monitoring, you must report the following source water TOC information for each treatment plant that treats surface water or ground water under the direct influence of surface water to the State within 10 days of the end of any quarter in which monitoring is required: (i) The number of source water TOC samples taken each month during last quarter. (ii) The date and result of each sample taken during last quarter. 20-228 3376