Mich. Admin. Code R. 325.10720e
Current through Vol. 24-21, December 1, 2024
Rule 720e.
Microbial Toolbox Reporting Requirements
| Toolbox option | Supplies shall submit all of the following information: | On the following schedule: |
| (a) Watershed control program (WCP) | (i) Notice of intention to develop a new or continue an existing watershed control program. | Not later than 2 years before the applicable treatment compliance date in R 325.10611g. |
| (ii) Watershed control plan | Not later than 1 year before the applicable treatment compliance date in R 325.10611g. | |
| (iii) Annual watershed control program status report. | Every 12 months, beginning 1 year after the applicable treatment compliance date in R 325.10611g. | |
| (iv) Watershed sanitary survey report. | For community water supplies, every 3 years beginning 3 years after the applicable treatment compliance date in R 325.10611g. For noncommunity water supplies, every 5 years beginning 5 years after the applicable treatment compliance date in R 325.10611g. | |
| (b) Alternative source/intake management | Verification that supply has relocated the intake or adopted the intake withdrawal procedure reflected in monitoring results. | Not later than the applicable treatment compliance date in R 325.10611g. |
| (c) Presedimentation | Monthly verification of all of the following: (i) Continuous basin operation. (ii) Treatment of 100% of the flow. (iii) Continuous addition of a coagulant. (iv) Not less than 0.5-log mean reduction of influent turbidity or compliance with alternative department approved performance criteria. | Monthly reporting within 10 days following the month in which the monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. |
| (d) 2-stage lime softening | Monthly verification of both of the following: (i) Chemical addition and hardness precipitation occurred in 2 separate and sequential softening stages before filtration. (ii) Both stages treated 100% of the plant flow. | Monthly reporting within 10 days following the month in which the monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. |
| (e) Bank filtration | (i) Initial demonstration of both of the following: (A) Unconsolidated, predominantly sandy aquifer. (B) Setback distance of not less than 25 ft. (0.5-log credit) or 50 ft. (1.0-log credit). | Not later than the applicable treatment compliance date in R 325.10611g. |
| (ii) If monthly average of daily max turbidity is greater than 1 NTU then supply shall report result and submit an assessment of the cause. | Report within 30 days following the month in which the monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. | |
| (f) Combined filter performance | Monthly verification of combined filter effluent (CFE) turbidity levels less than or equal to 0.15 NTU in not less than 95% of the 4-hour CFE measurements taken each month. | Monthly reporting within 10 days following the month in which the monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. |
| (g) Individual filter performance | Monthly verification of both of the following: (i) Individual filter effluent (IFE) turbidity levels less than or equal to 0.15 NTU in not less than 95% of samples each month in each filter. (ii) No individual filter greater than 0.3 NTU in 2 consecutive readings 15 minutes apart. | Monthly reporting within 10 days following the month in which the monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. |
| (h) Demonstration of performance | (i) Results from testing following a department approved protocol. | Not later than the applicable treatment compliance date in R 325.10611g. |
| (ii) As required by the department, monthly verification of operation within conditions of department approval for demonstration of performance credit. | Within 10 days following the month in which monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. | |
| (i) Bag filters and cartridge filter | (i) Demonstration that both of the following criteria are met: (A) Process meets the definition of bag or cartridge filtration. (B) Removal efficiency established through challenge testing that meets criteria in R 325.10611d to R 325.10611n and R 325.10720b to R 325.10720e. | Not later than the applicable treatment compliance date in R 325.10611g. |
| (ii) Monthly verification that 100% of plant flow was filtered. | Within 10 days following the month in which monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. | |
| (j) Membrane filtration | (i) Results of verification testing demonstrating both of the following: (A) Removal efficiency established through challenge testing that meets criteria in R 325.10611d to R 325.10611n and R 325.10720b to R 325.10720e. (B) Integrity test method and parameters, including resolution, sensitivity, test frequency, control limits, and associated baseline. | Not later than the applicable treatment compliance date in R 325.10611g. |
| (ii) Monthly report summarizing the following: (A) All direct integrity tests above the control limit. (B) If applicable, a turbidity or alternative state approved indirect integrity monitoring results triggering direct integrity testing and the corrective action that was taken. | Within 10 days following the month in which monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. | |
| (k) Second stage filtration | Monthly verification that 100% of flow was filtered through both stages and that first stage was preceded by coagulation step. | Within 10 days following the month in which monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. |
| (l) Slow sand filtration as secondary filter. | Monthly verification that both a slow sand filter and a preceding separate stage of filtration treated 100% of flow from surface water or GWUDI sources. | Within 10 days following the month in which monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. |
| (m) Chlorine dioxide | Summary of CT values for each day as described in R 325.10611m. | Within 10 days following the month in which monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. |
| (n) Ozone | Summary of CT values for each day as described in R 325.10611m. | Within 10 days following the month in which monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. |
| (o) UV | (i) Validation test results demonstrating operating conditions that achieve required UV dose. | Not later than the applicable treatment compliance date in R 325.10611g. |
| (ii) Monthly report summarizing the percentage of water entering the distribution system that was not treated by UV reactors operating within validated conditions for the required dose as specified in R 325.10611m. | Within 10 days following the month in which monitoring was conducted, beginning on the applicable treatment compliance date in R 325.10611g. |
Mich. Admin. Code R. 325.10720e