327 IAC 8-2.5-8 - Reporting and record keeping requirements; disinfectants and disinfection byproducts

Authority: IC 13-13-5-1; IC 13-14-8-2; IC 13-14-8-7; IC 13-18-3-2

Affected: IC 13-12-3-1; IC 13-13-5-2; IC 13-14-9; IC 13-18-11

Sec. 8.

(a) Systems required to sample:

(1) quarterly or more frequently shall report to the commissioner within ten (10) days after the end of each quarter in which samples were collected, notwithstanding the provisions of 327 IAC 8-2-13; and

(2) less frequently than quarterly report to the commissioner within ten (10) days after the end of each monitoring period in which samples were collected.

(b) For disinfection byproducts, systems must report the information specified in the following table:

IF YOU ARE A:	YOU MUST REPORT:
(1) System monitoring for TTHMs and HAA5 under the requirements of section 6(b) of this rule on a quarterly or more frequent basis:	(i) The number of samples taken during the last quarter. (ii) The location, date, and result of each sample taken during the last quarter. (iii) The arithmetic average of all samples taken in the last quarter. (iv) The annual arithmetic average of the quarterly arithmetic averages of this section for the last four (4) quarters. (v) Whether, based on section 7(b)(1) of this rule, the MCL was violated.
(2) System monitoring for TTHMs and HAA5 under the requirements of section 6(b) of this rule less frequently than quarterly (but at least annually):	(i) The number of samples taken during the last year. (ii) The location, date, and result of each sample taken during the last monitoring period. (iii) The arithmetic average of all samples taken over the last year. (iv) Whether, based on section 7(b)(1) of this rule, the MCL was violated.
(3) System monitoring for TTHMs and HAA5 under the requirements of section 6(b) of this rule less frequently than annually:	(i) The location, date, and result of the last sample taken. (ii) Whether, based on section 7(b)(1) of this rule, the MCL was violated.
(4) System monitoring for chlorite under the requirements of section 6(b) of this rule:	(i) The number of entry point samples taken each month for the last three (3) months. (ii) The location, date, and result of each sample (both entry point and distribution system) taken during the last quarter. (iii) For each month in the reporting period, the arithmetic average of all samples taken in each three sample set taken in the distribution system. (iv) Whether, based on section 7(b)(3) of this rule, the MCL was violated, and in which month, and how many times it was violated each month.
(5) System monitoring for bromate under the requirements of section 6(b) of this rule:	(i) The number of samples taken during the last quarter. (ii) The location, date, and result of each sample taken during the last quarter. (iii) The arithmetic average of the monthly arithmetic averages of all samples taken in the last year. (iv) Whether, based on section 7(b)(2) of this rule, the MCL was violated.

(c) For disinfectants, systems shall report the information specified in the following table:

IF YOU ARE A:	YOU MUST REPORT:
(1) System monitoring for chlorine or chloramines under the requirements of section 6(c) of this rule:	(i) The number of samples taken during each month of the last quarter. (ii) The monthly arithmetic average of all samples taken in each month for the last twelve (12) months. (iii) The arithmetic average of all monthly averages for the last twelve (12) months. (iv) Whether, based on section 7(c)(1) of this rule, the MRDL was violated.
(2) System monitoring for chlorine dioxide under the requirements of section 6(c) of this rule:	(i) The dates, results, and locations of samples taken during the last quarter. (ii) Whether, based on section 7(c)(2) of this rule, the MRDL was violated. (iii) Whether the MRDL was exceeded in any two (2) consecutive daily samples and whether the resulting violation was acute or nonacute.

(d) For disinfection byproduct precursors and enhanced coagulation or enhanced softening, systems shall report the information specified in the following table:

IF YOU ARE A:	YOU MUST REPORT:
(1) System monitoring monthly or quarterly for TOC under the requirements of section 6(d) of this rule and required to meet the enhanced coagulation or enhanced softening requirements in section 9(b)(2) or 9(b)(3) of this rule:	(i) The number of paired (source water and treated water) samples taken during the last quarter. (ii) The location, date, and results of each paired sample and associated alkalinity taken during the last quarter. (iii) For each month in the reporting period that paired samples were taken, the arithmetic average of the percent reduction of TOC for each paired sample and the required TOC percent removal. (iv) Calculations for determining compliance with the TOC percent removal requirements, as provided in section 9(c)(1) of this rule. (v) Whether the system is in compliance with the enhanced coagulation or enhanced softening percent removal requirements in section 9(b) of this rule for the last four (4) quarters.
(2) System monitoring monthly or quarterly for TOC under the requirements of section 6(d) of this rule and meeting one (1) or more of the alternative compliance criteria in section 9(a)(2) or 9(a)(3) of this rule:	(i) The alternative compliance criterion that the system is using. (ii) The number of paired samples taken during the last quarter. (iii) The location, date, and result of each paired sample and associated alkalinity taken during the last quarter. (iv) The running annual arithmetic average based on monthly averages (or quarterly samples) of source water TOC for systems meeting a criterion in section 9(a)(2)(A) or 9(a)(2)(C) of this rule or of treated water TOC for systems meeting the criterion in section 9(a)(2)(B) of this rule. (v) The running annual arithmetic average based on monthly averages (or quarterly samples) of source water SUVA for systems meeting the criterion in section 9(a)(2)(E) of this rule or of treated water SUVA for systems meeting the criterion in section 9(a)(2)(F) of this rule. (vi) The running annual average of source water alkalinity for systems meeting the criterion in section 9(a)(2)(C) of this rule and of treated water alkalinity for systems meeting the criterion in section 9(a)(3)(A) of this rule. (vii) The running annual average for both TTHM and HAA5 for systems meeting the criterion in section 9(a)(2)(C) or 9(a)(2)(D) of this rule. (viii) The running annual average of the amount of magnesium hardness removal (as CaCO3, in mg/L) for systems meeting the criterion in section 9(a)(3)(B) of this rule. (ix) Whether the system is in compliance with the particular alternative compliance criterion in section 9(a)(2) or 9(a)(3) of this rule.

Notes

327 IAC 8-2.5-8

Water Pollution Control Board; 327 IAC 8-2.5-8; filed May 1, 2003, 12:00 p.m.: 26 IR 2849; filed Oct 24, 2006, 3:03 p.m.: 20061122-IR-327050255FRA