Chapter NR 245

Register August 1997 No. 500

Chapter NR 245

GRAIN MILLS

NR 245.01   Purpose.

NR 245.02   Applicability.

NR 245.03   Definitions.

NR 245.04   Compliance with effluent limitations and standards.

NR 245.06   Application of effluent limitations and standards.

NR 245.10   Effluent limitations, best practicable treatment.

NR 245.11   Effluent limitations, best available treatment.

NR 245.12   Standards of performance.

NR 245.13   Pretreatment standards.

NR 245.01 NR 245.01 Purpose. The purpose of this chapter is to establish effluent limitations, standards of performance, and pretreatment standards for discharges of process wastes from the grain mills category of point sources and subcategories thereof.

NR 245.01 Note Note: The authority for promulgation of this chapter is set forth in ch. NR 205.

NR 245.01 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76.

NR 245.02 NR 245.02 Applicability. The effluent limitations, standards of performance, pretreatment standards, and other provisions in this chapter are applicable to pollutants or pollutant properties in discharges of process waste resulting from manufacture in any of the following subcategories as defined in s. NR 245.03:

NR 245.02(1) (1) Process subcategories

NR 245.02(1)(a) (a) Corn dry milling,

NR 245.02(1)(b) (b) Corn wet milling,

NR 245.02(1)(c) (c) Normal wheat flour milling,

NR 245.02(1)(d) (d) Bulgur wheat flour milling,

NR 245.02(1)(e) (e) Normal rice milling, and

NR 245.02(1)(f) (f) Parboiled rice milling.

NR 245.02(2) (2) Product subcategories.

NR 245.02(2)(a) (a) Animal feed.

NR 245.02(2)(b) (b) Hot cereal.

NR 245.02(2)(c) (c) Ready-to-eat cereal.

NR 245.02(2)(d) (d) Wheat starch and gluten.

NR 245.02 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76.

NR 245.03 NR 245.03 Definitions. The following special definitions are applicable to terms used in this chapter. Definitions of other terms and meanings of abbreviations are set forth in ch. NR 205.

NR 245.03(1) (1) “Animal feed” means such feeds (formula feed concentrate) manufactured using primarily grain and grain by-products which may be supplemented by proteins, pharmaceuticals, vitamins, or mineral additives.

NR 245.03(2) (2) “Bulgur wheat flour milling” means the process in which wheat is parboiled, dried, and partially debranned in the production of bulgur.

NR 245.03(3) (3) “Corn” means shelled corn delivered to a plant before processing.

NR 245.03(4) (4) “Corn dry milling” means the process in which shelled corn is washed and subsequently milled by dry processes into such products as corn meal, grits, flour, oil, and animal feed.

NR 245.03(5) (5) “Corn wet milling” means the process in which shelled corn is steeped in a dilute solution of sulfurous acid and then processed by wet means into such products as animal feed, regular and modified starches, corn oil, corn syrup, and dextrose.

NR 245.03(6) (6) “Hot cereal” means breakfast cereals produced from grains, principally wheat and oats, requiring cooking prior to human consumption.

NR 245.03(7) (7) “MsBu” means 1000 standard bushels.

NR 245.03(8) (8) “Normal rice milling” means the process in which rice is cleaned and milled by dry processes.

NR 245.03(9) (9) “Normal wheat flour milling” means the processes in which wheat is milled by dry processes into flour and mill feed.

NR 245.03(10) (10) “Parboiled rice milling” means the process in which rice is cleaned, cooked, and dried before milling.

NR 245.03(11) (11) “Ready-to-eat cereal” means breakfast cereals produced from various grains and other materials (whole grain wheat, rice, corn, grits, oat flour, sugar, and minor ingredients) and normally available for human consumption without cooking.

NR 245.03(12) (12) “Standard bushel” means a bushel of shelled corn weighing 56 pounds or a bushel of wheat weighing 60 pounds.

NR 245.03(13) (13) “Wheat” means wheat delivered to a plant before processing.

NR 245.03(14) (14) “Wheat starch and gluten” means such products produced from wheat flour through conventional processes of physical separation and subsequent refinement.

NR 245.03 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76.

NR 245.04 NR 245.04 Compliance with effluent limitations and standards. Discharge of pollutants from facilities subject to the provisions of this chapter may not exceed, as appropriate:

NR 245.04(1) (1) By July 1, 1977 effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available;

NR 245.04(2) (2) By July 1, 1983 effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable;

NR 245.04(3) (3) Pretreatment standards for discharges to publicly owned treatment works;

NR 245.04(4) (4) Standards of performance for new sources.

NR 245.04 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76; r. and recr. Register, August, 1983, No. 332, eff. 9-1-83.

NR 245.06 NR 245.06 Application of effluent limitations and standards.

NR 245.06(1) (1) The effluent limitations and standards set forth in this chapter shall be used in accordance with this section to establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this chapter, except as;

NR 245.06(1)(a) (a) They may be modified in accordance with subch. IV of ch. NR 220,

NR 245.06(1)(b) (b) They may be superseded by more stringent limitations and standards necessary to achieve water quality standards or meet other legal requirements, or

NR 245.06(1)(c) (c) They may be supplemented or superseded by standards or prohibitions for toxic pollutants or by additional limitations for other pollutants required to achieve water quality.

NR 245.06(2) (2) The production basis for application of the limitations and standards set forth in this chapter shall be the daily average of the maximum month production in the past year for the facility in each subcategory subject to the provisions of this chapter.

NR 245.06 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76; correction in (1) (a) made under s. 13.92 (4) (b) 7, Stats., Register April 2018 No. 748.

NR 245.10 NR 245.10 Effluent limitations, best practicable treatment. The following effluent limitations for all or specific subcategories establish, except as provided in subch. IV of ch. NR 220, the quantity or quality of pollutants or pollutant properties which may be discharged by a facility subject to the provisions of this chapter after application to process wastes of the best practicable control technology currently available.

NR 245.10(1) (1) There shall be no discharge of process waste waters from the normal wheat flour milling, normal rice milling, animal feed, and hot cereal subcategories.

NR 245.10(2) (2) The pH of all discharges shall be within the range of 6.0 to 9.0.

NR 245.10(3) (3) The 30 day average and daily maximum limitations for BOD5 and suspended solids are set forth in table 1.

NR 245.10(4) (4) The effluent limitations for process subcategories in table 1 are in lbs/MsBu of corn or wheat processed and in lbs/1000lbs or kg/1000kg of rice processed. The limitations for corn and wheat may be converted to kg/1000kg by dividing the english unit limitation by 56 in the case of corn and 60 in the case of wheat.

NR 245.10(5) (5) The effluent limitations for product subcategories in table 1 are in lbs/1000lbs or kg/1000kg of cereal product for the ready-to-eat subcategory and of wheat flour raw material for the wheat starch and gluten subcategory1.

NR 245.10 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76; correction in (intro.) made under s. 13.92 (4) (b) 7, Stats., Register April 2018 No. 748.

NR 245.11 NR 245.11 Effluent limitations, best available treatment. The following effluent limitations for all or specific subcategories establish the quantity or quality of pollutants or pollutant properties which may be discharged by a facility subject to the provisions of this chapter after application to process wastes of the best available technology economically achievable.

NR 245.11(1) (1) There shall be no discharge of process waste waters from the normal wheat flour milling, normal rice milling, animal feed, and hot cereal subcategories.

NR 245.11(2) (2) The pH of all discharges shall be within the range of 6.0 to 9.0.

NR 245.11(3) (3) The 30 day average and daily maximum limitations for BOD5 and suspended solids are set forth in table 2.

NR 245.11(4) (4) The effluent limitations for process subcategories in table 2 are in lbs/MsBu of corn or wheat processed and in lbs/1000lbs or kg/1000kg of rice processed. The limitations for corn and wheat may be converted to kg/1000kg by dividing the english unit limitation by 56 in the case of corn and 60 in the case of wheat.

NR 245.11(5) (5) The effluent limitations for product subcategories in table 2 are in lbs/1000lbs or kg/1000kg of cereal product for the ready-to-eat subcategory and of wheat flour raw material for the wheat starch and gluten subcategory.

NR 245.11 History History: Cr. Register, June, 1976, No. 246, eff. 7-1-76.

NR 245.12 NR 245.12 Standards of performance. The following effluent limitations for all or specific subcategories establish the quantity or quality of pollutants or pollutant properties which may be discharged by a facility which is a new source subject to the provisions of this chapter.

NR 245.12(1) (1) There shall be no discharge of process waste waters from the normal wheat flour milling, normal rice milling, animal feed, and hot cereal subcategories.

NR 245.12(2) (2) The pH of all discharges shall be within the range of 6.0 to 9.0.