Ala. Admin. Code r. 335-7-2-.14
Current through Register Vol. 43, No. 1, October 31, 2024
Section 335-7-2-.14 - Standard Monitoring Plan(1) The system's standard monitoring plan (SMP) must comply with the following subparagraphs. Systems must prepare and submit a standard monitoring plan to the Department according to the schedule in rule 335-7-2-.13. (a) The SMP must include a schematic of the distribution system (including distribution system entry points and their sources, storage facilities, and any point of disinfectant addition), with notes indicating locations and dates of all projected standard monitoring and all projected compliance monitoring under rules 335-7-2-.11 or 335=7-2-.12.(b) The SMP must include justification of standard monitoring location selection and a summary of data that was used to justify the selection.(c) The SMP must specify the population served and system type (ground water, surface water or ground water under the influence of surface water).(d) Systems must retain a complete copy of the SMP submitted under this rule, including any modifications required by the Department, for 10 years after the system submitted the SMP to the Department.(2) Standard Monitoring. (a) Systems must monitor as indicated in the following table. Systems must collect dual sample sets at each location. Systems must conduct one monitoring period during the peak historical month for TTHM levels or HAA5 levels or the month with the warmest water temperature. A review of available compliance, study, or operational data must be conducted to determine the peak historical month for TTHM or HAA5 levels or the warmest water temperature. SMP Monitoring Requirements
Source Water Type | Population Size Category | Monitoring Periods and Freauencv of Sampling | Distribution System Monitoring Locations1 |
Total permonitoring period | Near Entry Points | Average Residence Time | High TTHM Locations | High HAA5 Locations |
Surface Water or Ground Water Under the Influence of Surface Water | < 3,300 consecutive systems | four (every 90 days) | 2 | 1 | 1 |
< 3,300 non-consecutive systems | 2 | 1 | 1 |
3,301-9,999 | 4 | 1 | 2 | 1 |
10,000-49,999 | six (every 60 days) | 8 | 1 | 2 | 3 | 2 |
50,000-249,999 | 16 | 3 | 4 | 5 | 4 |
250,000-999,999 | 24 | 4 | 6 | 8 | 6 |
1,000,000-4,999,999 | 32 | 6 | 8 | 10 | 8 |
= 5,000,000 | 40 | 8 | 10 | 12 | 10 |
Ground Water | < 500 consecutive systems | one (during peak historical Month)2 | 2 | 1 | 1 |
< 500 non-consecutive systems | 2 | 1 | 1 |
500-9,999 | four (every 90 days) | 2 | 1 | 1 |
10,000-99,999 | 6 | 1 | 1 | 2 | 2 |
100,000-499,999 | 8 | 1 | 1 | 3 | 3 |
= 500,000 | 12 | 2 | 2 | 4 | 4 |
1 A dual sample set must be taken at each monitoring location during each monitoring period.
2 The peak historical month is the month with the highest TTHM or HAA5 levels or the warmest water temperature.
(b) Systems must take samples at locations other than the existing monitoring locations used under rule 335-7-2-.11. Monitoring locations must be distributed throughout the distribution system.(c) If the number of entry points to the distribution system is fewer than the specified number of entry point monitoring locations, excess entry point samples must be replaced equally at high TTHM and HAA5 locations. If there is an odd extra location number, the system must take a sample at a high TTHM location. If the number of entry points to the distribution system is more than the specified number of entry point monitoring locations, systems must take samples at entry points to the distribution system having the highest annual water flow.(d) Each system must monitor at the number of locations in paragraph (2) of this rule. This monitoring cannot be reduced or combined with another system's monitoring.(e) In addition to the minimum number of samples in subparagraph (2)(a) of this rule, one sample must be taken at a maximum residence time representing each source of water at the frequency listed in the above SMP Monitoring Requirements table. Wells in the same aquifer may be reduced to one sample at a maximum residence time with Department approval. (3) The DSE Report must be submitted to the Department by the appropriate deadline in paragraph 335-7-2-.13(c). The system's DSE report must include the following elements: (a) All TTHM and HAA5 analytical results from compliance monitoring conducted under rules 335-7-2-.11 or 335-7-2-.12 and all standard monitoring conducted during the period of the DSE as individual analytical results and LRAAs presented in a table or spreadsheet acceptable to the Department.(b) Include a schematic of the distribution system, population served, and water system type if it has changed from the SMP submitted under this section.(c) An explanation of any deviations from the approved SMP.(d) Recommended compliance monitoring locations for use under rule 335-7-2-.12 and the justification that was used to select the monitoring locations.(4) The system must retain a complete copy of the DSE report submitted under this rule for 10 years after the date that the report was submitted. The system must also keep a copy of any modifications to the compliance monitoring locations required by the Department or any alternate monitoring locations approved by the Department for 10 years. The DSE report and any notification from the Department must be available for review by the Department or the public.Ala. Admin. Code r. 335-7-2-.14
New Rule: Filed December 18, 2007; effective January 22, 2008.Amended by Alabama Administrative Monthly Volume XXXIV, Issue No. 09, June 30, 2016, eff. 8/5/2016.Author: Dennis D. Harrison
Statutory Authority:Code of Ala. 1975, §§ 22-23-33, 22-23-49, 22-22A-5, 22-22A-6.