Nebraska Administrative Code
Topic - HEALTH AND HUMAN SERVICES SYSTEM
Title 179 - PUBLIC WATER SYSTEMS
Chapter 24 - STAGE 2 DISINFECTANTS AND DISINFECTION BYPRODUCTS (DBPs)
Section 179-24-005 - MONITORING PLAN

Universal Citation: 179 NE Admin Rules and Regs ch 24 ยง 005

Current through September 17, 2024

005.01 Developing and Implementing

24-005.01A A system must develop and implement a monitoring plan to be kept on file for Department and public review. The monitoring plan must contain the following elements and be complete no later than the date the system conducts its monitoring under this chapter.
1. Monitoring locations;

2. Monitoring dates;

3. Compliance calculation procedures; and

4. Monitoring plans for any other systems in the combined distribution system if the Department has reduced monitoring requirements.

24-005.01B If a system did not submit an IDSE report under the standard monitoring or system specific provisions of 40 CFR 141 Subpart U, and it does not have sufficient 179 NAC 16 monitoring locations to identify the required number of 179 NAC 24 compliance monitoring locations indicated in 179 NAC 23-008.02, the system must identify additional locations by alternating selection of locations representing high TTHM levels and high HAA5 levels until the required number of compliance monitoring locations have been identified. The system must also provide the rationale for identifying the locations as having high levels of TTHMs or HAA5s. If a system has more 179 NAC 16 monitoring locations than required for 179 NAC 24 compliance monitoring in 179 NAC 23-008.02, it must identify which locations it will use for 179 NAC 24 compliance monitoring by alternating selection of locations representing high TTHM levels and high HAA5 levels until the required number of 179 NAC 24 compliance monitoring locations have been identified.

005.02 If a system is a surface water or GWUDI system serving >3,300 people, the system must submit a copy of its monitoring plan to the Department prior to the date it conducts its initial monitoring under this chapter unless its IDSE report contains all the information required by 179 NAC 24-005. The Department may also require a system serving 3,300 or fewer people to submit a copy of its monitoring plan.

005.03 A system may revise its monitoring plan to reflect changes in treatment, distribution system operations and layout (including new service areas), or other factors that may affect TTHM or HAA5 formation, or for Department-approved reasons, after consultation with the Department regarding the need for changes and the appropriateness of changes. If a system changes monitoring locations, the system must replace existing compliance monitoring locations with the lowest LRAA with new locations that reflect the current distribution system locations with expected high TTHM or HAA5 levels. The Department may also require modifications in the monitoring plan. A surface water or GWUDI system serving >3,300 people must submit a copy of its modified monitoring plan to the Department prior to the date it is required to comply with the revised monitoring plan.

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