The department shall calculate interest rates in accordance with s. 281.58 (12), Stats., and all of the following:
RC = (RT 1)(PR 1) + (RT 2)(PR 2) + (RT 3)(PR 3)
where:
RC . . . is the composite interest rate for the project.
RT 1 . . . is the interest rate stated under s. 281.58 (12) (a) 1 a., b., or c., Stats., for the municipality based on its population as described in s. NR 162.003 (55) and median household income as determined under par. (d).
RT 2 . . . is the market interest rate as defined under s. 281.58 (1) (cg), Stats.
RT 3 . . . is the interest rate established under s. 281.58 (12) (a) 5, Stats., for projects that provide facilities to receive or store septage, or provide treatment capacity for septage, as defined in s. 281.58 (1) (cv), Stats.
PR1 . . . is the percentage of the project under s. NR 162.03 (1) (a), (b), and (d) and (2) that is eligible for a subsidized rate and being financed by the CWFP, and under s. NR 162.03 (1) (c) if the municipality is not a violator of an effluent limitation as defined in s. 281.58 (1) (e), Stats.
PR2 . . . is the percentage of the project being financed by the CWFP that is eligible under s. NR 162.04 (1) (b), and under s. NR 162.03 (c) if the municipality is a violator of an effluent limitation as defined in s. 281.58 (1) (e), Stats.
PR3 . . . is the percentage of the project being financed by the CWFP that is eligible under s. NR 162.03 (1) (a) 1. and eligible for a zero percent interest rate under s. 281.58 (12) (a) 5, Stats.
Note: The department uses U.S. bureau of the census municipal incomes as derived from the American Community Survey and published annually in the 5-year survey data. At the time of writing of this administrative code, the U.S. bureau of the census is not collecting income data during the decennial census. The U.S. bureau of the census does not publish data for all types of municipalities eligible for CWFP financial assistance.
Note: To obtain a custom tabulation, the municipality will likely need to compare a map showing the boundaries of the municipality to a census block map and determine which census blocks contain any portion of the municipality. The municipality would then submit the appropriate census block numbers to the U.S. bureau of the census (see https://www.census.gov/programs-surveys/acs/data/custom-tables.html) with a request for a custom tabulation of a median household income figure for that set of identified blocks only.
Wis. Admin. Code Department of Natural Resources NR 162.10