Nebraska Administrative Code
Topic - HEALTH AND HUMAN SERVICES SYSTEM
Title 179 - PUBLIC WATER SYSTEMS
Chapter 23 - INITIAL DISTRIBUTION SYSTEM EVALUATION (IDSE)
Section 179-23-005 - SYSTEM SPECIFIC STUDIES

1. The IDSE report must include all TTHM and HAA5 analytical results from 179 NAC 16 or 24 compliance monitoring and all system specific study monitoring conducted during the period of the system specific study presented in a tabular or spreadsheet format acceptable to the Department. If changed from the system specific study plan submitted under 179 NAC 23-005.01, the IDSE report must also include a schematic of the distribution system, the population served, and system type: surface water/GWUDI or ground water.

2. If a system used the modeling provision under 179 NAC 23-005.01B, the system must include final information for the elements described in 179 NAC 23-005.01B item 2, and a 24-hour time series graph of residence time for each 179 NAC 24 compliance monitoring location selected.

3. A system must recommend and justify 179 NAC 24 compliance monitoring locations and timing based on the protocol in 179 NAC 23-008.

4. The IDSE report must include an explanation of any deviations from the system's approved system specific study plan.

5. The IDSE report must include the basis (analytical and modeling results) and justification used to select the recommended 179 NAC 24 monitoring locations.

6. A system may submit its IDSE report in lieu of a system specific study plan on the schedule identified in 179 NAC 23-003.01 for submission of the system specific study plan if the system believes that it has the necessary information by the time that the system specific study plan is due. If a system elects this approach, its IDSE report must also include all information required under 179 NAC 23-005.01

7. A system must retain a complete copy of its IDSE report submitted under 179 NAC 23-005 or 40 CFR 141 Subpart U for 10 years after the date the system submitted it. If the Department modifies the 179 NAC 24 monitoring requirements that the system recommended in its IDSE report or if the Department approves alternative monitoring locations, the system must keep a copy of the Department's notification on file for 10 years after the date of the Department's notification. A system must make the IDSE report and any Department notification available for review by the Department or the public.