Nebraska Administrative Code
Topic - HEALTH AND HUMAN SERVICES SYSTEM
Title 179 - PUBLIC WATER SYSTEMS
Chapter 19 - LONG TERM 1 (LT 1) ENHANCED SURFACE WATER TREATMENT (for Systems Serving Fewer Than 10,000 People)
Section 179-19-002 - DEFINITIONS

Comprehensive performance evaluation (CPE) is a thorough review and analysis of a treatment plant's performance-based capabilities and associated administrative, operation and maintenance practices. It is conducted to identify factors that may be adversely impacting a plant's capability to achieve compliance and emphasizes approaches that can be implemented without significant capital improvements. For the purpose of compliance with 179 NAC 17 and 179 NAC 19, the comprehensive performance evaluation must consist of at least the following components: Assessment of plant performance; evaluation of major unit processes; identification and prioritization of performance limiting factors; assessment of the applicability of comprehensive technical assistance; and preparation of a CPE report.

Disinfection profile is a summary of Giardia iambiia inactivation through the treatment plant. The procedure for developing a disinfection profile is contained in 179 NAC 17-004 (Disinfection profiling and benchmarking) in 179 NAC 17 and 179 NAC 19-007.01 to 19-007.07 (Disinfection profile) in 179 NAC 19.

Ground water under the direct influence of surface water (GWUDI) means any water beneath the surface of the ground with significant occurrence of insects or other macroorganisms, algae, or large-diameter pathogens such as Giardia iambiia or Cryptosporidium, or significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH which closely correlate to climatological or surface water conditions. Direct influence must be determined for individual sources in accordance with the criteria established by the Director.

The Director determination of direct influence may be based on site-specific measurements of water quality and/or documentation of well construction characteristics and geology with field evaluation.