NR 111.41(5)(b)3.3. If the demonstration relies in part on flow reduction to reduce impingement, the applicant shall include 2 years of intake flows, measured daily, as part of the demonstration, and describe the extent to which flow reductions are seasonal or intermittent. The applicant shall document how the flow reduction results in reduced impingement. In addition, the applicant shall describe how the reduction in impingement has reduced impingement mortality.

NR 111.41(5)(b)4.4. The applicant shall document the percent impingement mortality reflecting optimized operation of the total system of technologies, operational measures, and best management practices and all supporting calculations. The total system performance is the combination of the impingement mortality performance reflected in subds. 1. to 3.

NR 111.41(6)(6) Entrainment performance studies. The owner or operator of an existing facility shall submit any previously conducted studies or studies obtained from other facilities addressing technology efficacy, through-facility entrainment survival, and other entrainment studies. Any such submittals shall include a description of each study, together with underlying data, and a summary of any conclusions or results. Any studies conducted at other locations shall include an explanation as to why the data are relevant and representative of conditions at the facility operated by the applicant and explain how the data should be interpreted using the definition of entrainment specified in s. NR 111.03 (12).

NR 111.41(7)(7) Operational status. The owner or operator of an existing facility shall submit a description of the operational status of each generating, production, or process unit that uses cooling water, including all of the following:

NR 111.41(7)(a)(a) For power production or steam generation, all of the following:

NR 111.41(7)(a)2.2. The capacity utilization rate or equivalent for the previous 5 years, including any extended or unusual outages that significantly affect current data for flow, impingement, entrainment, or other factors.

NR 111.41(7)(b)(b) For nuclear facilities, descriptions of completed, approved, or scheduled uprates and nuclear regulatory commission relicensing status of each unit.

NR 111.41(7)(c)(c) For process units at a facility that uses cooling water other than for power production or steam generation, for which the owner or operator intends to use reductions in flow or changes in operations to meet the requirement under s. NR 111.12, all of the following:

NR 111.41(7)(d)(d) For all manufacturing facilities, descriptions of current and future production schedules.

NR 111.41(7)(e)(e) Descriptions of plans or schedules for any new units planned within the next 5 years.

NR 111.41(8)(8) Entrainment characterization study. The owner or operator of an existing facility that withdraws greater than 125 MGD AIF shall develop for submission to the department an entrainment characterization study that includes a minimum of 2 years of entrainment data collection. The entrainment characterization study shall include all of the following components:

NR 111.41(8)(a)(a) Entrainment data collection method. An identification and documentation of organisms collected to the lowest taxon possible of all life stages of fish and shellfish that are in the vicinity of the cooling water intake structure and are susceptible to entrainment, including any threatened or endangered species with habitat range that includes waters in the vicinity of the cooling water intake structure. The data collection period and frequency shall be no less than biweekly during the periods of primary reproduction and larval recruitment, and peak abundance, as identified by the department. Biological data collection shall be representative of the entrainment at the intakes subject to this subsection. The owner or operator of the facility shall identify and document how the location of the cooling water intake structure in the waterbody and the water column are accounted for by the data collection locations. Unless department approval is given, the data collection location shall not be at the discharge.

NR 111.41(8)(b)(b) Biological entrainment characterization. Characterization of all life stages of fish, shellfish, and any species protected under federal, state, or tribal law, including threatened or endangered species, including a description of their abundance and their temporal and spatial characteristics in the vicinity of the cooling water intake structure, based on sufficient data to characterize annual, seasonal, and diel variations in entrainment, including variations related to climate and weather differences, spawning, feeding, and water column migration. This characterization may include historical data that are representative of the current operation of the facility and of biological conditions at the site. Identification of all life stages of fish and shellfish shall include identification of any surrogate species used, and identification of data representing both motile and non-motile life-stages of organisms.

NR 111.41(8)(c)(c) Analysis and supporting documentation. Documentation of the current entrainment of all life stages of fish, shellfish, and any threatened or endangered species. The documentation may include historical data that are representative of the current operation of the facility and of biological conditions at the site. Entrainment data to support the facility’s calculations shall be collected during periods of representative operational flows for the cooling water intake structure, and the flows associated with the data collection shall be documented. The method used to determine latent mortality along with data for specific organism mortality or survival that is applied to other life-stages or species shall be identified. The owner or operator of the facility shall identify and document all assumptions and calculations used to determine the total entrainment for the facility, together with all methods and quality assurance or quality control procedures for data collection and data analysis. The proposed data collection and data analysis methods shall be appropriate for a quantitative survey.

NR 111.41(9)(9) Comprehensive technical feasibility and cost evaluation study. The owner or operator of an existing facility that withdraws greater than 125 MGD AIF shall develop for submission to the department an engineering study of the technical feasibility and incremental costs of candidate entrainment control technologies. In addition, the study shall include all of the following:

NR 111.41(9)(a)(a) Technical feasibility. An evaluation of the technical feasibility of closed-cycle recirculating systems, fine mesh screens with a mesh size of 2 millimeters or smaller, variable speed pumps, and water reuse or alternate sources of cooling water. In addition, this study shall include all of the following:

NR 111.41(9)(a)1.1. A description of all technologies and operational measures considered, including alternative designs of closed-cycle recirculating systems such as natural draft cooling towers, mechanical draft cooling towers, hybrid designs, and compact or multi-cell arrangements.