Ala. Admin. Code r. 335-7-11-.05

Current through Register Vol. 42, No. 12, September 30, 2024

Section 335-7-11-.05 - Repeat Monitoring Requirements

(1) Systems monitoring on a yearly basis shall use the number of reduced monitoring sites shown in Table 11-1. All monitoring must be taken from previous sites and must be collected during June, July, August, or September of that year unless the water system receives written approval from the Department for an alternative monitoring period.

(2) After three consecutive years of demonstrating satisfactory action levels, a small or medium water system may reduce monitoring to once every three years.

(3) After three consecutive years of demonstrating satisfactory action levels and maintaining the range of values for the water quality control parameters reflecting optimal corrosion control treatment specified by the Department, any water system may reduce monitoring sites and frequency of monitoring to once every three years with written approval from the Department.

(4) A system with a 90th percentile level less than or equal to .005 mg/L for lead and 0.65 mg/L for copper for two consecutive six-month periods may reduce monitoring to once every three years.

(5) Any system exceeding a lead or copper compliance limit shall increase monitoring consistent with the initial monitoring compliance requirements. Monitoring must be collected from the initial sites and monitoring must take place during six-month compliance cycles (January - June or July - December) until compliance is achieved. Monitoring shall begin with the next available compliance cycle after the exceedance occurred. If optimum corrosion control treatment or source water treatment is initiated by the system, monitoring during six-month compliance cycles must continue for two six-month periods after the treatment has been installed demonstrating compliance with the compliance limits.

(6) Any system that fails to operate at or above the minimum value or within the range of values for the water quality parameters specified by the Department for more than nine days in any six-month period shall increase monitoring consistent with the initial monitoring compliance requirements. Monitoring must be conducted utilizing the initial monitoring sites and monitoring must take place during six-month compliance cycles January - June or July - December) until compliance is achieved. Monitoring shall begin with the next available compliance cycle after the exceedance occurred.

(7) A system may be allowed to monitor during months other than June, July, August and September. The alternate monitoring period shall be no longer than four months in duration when the highest lead levels are likely to occur. Systems monitoring annually must conduct their next round of monitoring during a time period that ends no later than 21 months after the previous round of monitoring. Systems monitoring every three years must conduct their next round of monitoring during a time period that ends no later than 45 months after the previous round of monitoring.

Ala. Admin. Code r. 335-7-11-.05

Adopted: September 23, 1992; effective November 9, 1992. Amended: Filed November 28, 1995; effective January 2, 1996. Amended: Filed February 6, 2002; effective March 13, 2002. Amended: Filed April 26, 2009; effective May 26, 2009.

Amended by Alabama Administrative Monthly Volume XXXIII, Issue No. 01, October 31, 2014, eff. 11/25/2014.

Author: Joe Alan Power

Statutory Authority:Code of Ala. 1975, §§ 22-22A-5, 22-22A-6, 22-23-33.