Section 283.02. General definitions.

  In addition to the definitions set forth in ch. NR 205 and s. NR 211.03 , the following definitions apply to this chapter:

(1)  "Average process water usage flow rate" means the volume of process water used per year by a plastics molding and forming process divided by the number of days per year the process operates, expressed in liters per day. The average process water usage flow rate for a plant with more than one wastewater source in a subcategory is the sum of the average process water usage flow rates for each source in that subcategory.

(2)  "Cleaning water" means process water used to clean the surface of an intermediate or final plastic product or to clean the surfaces of equipment used in plastics molding and forming that contact an intermediate or final plastic product. It includes water used in both the detergent wash and rinse cycles of a cleaning process.

(3)  "Contact cooling and heating water" means process water that contacts the raw material or plastic product for the purpose of heat transfer during the plastics molding and forming process.

(4)  "Crude intermediate plastic material" means plastic material formulated in an on-site polymerization process.

(5)  "Existing source" means any point source, except a new source as defined in sub. (9) , from which pollutants may be discharged either directly into the waters of the state or into a POTW.

(6)  "Finishing water" means process water used to remove waste plastic material generated during a finishing process or to lubricate a plastic product during a finishing process. It includes but is not limited to water used to machine or to assemble intermediate or final plastic products.

(7)  "Mass of pollutant that can be discharged" means the pollutant mass calculated by multiplying the pollutant concentration times the average process water usage flow rate.

(8)  "NSPS" means new source performance standards.

(9)  "New source", as defined for NSPS and PSNS, means any point source from which pollutants may be discharged either directly into the waters of the state or into a POTW, the construction of which commenced after February 15, 1984.

(10)  "PSES" means pretreatment standards for existing sources.

(11)  "PSNS" means pretreatment standards for new sources.

(12)  "Plastic material" means a synthetic organic polymer, including but not limited to a thermoset polymer, a thermoplastic polymer, or a combination of a natural polymer and a thermoset or thermoplastic polymer, that is solid in its final form and was shaped by flow. The material can be either a homogeneous polymer or a polymer combined with fillers, plasticizers, pigments, stabilizers, or other additives.

(13)  "Plastics molding and forming" means a manufacturing process in which plastic materials are blended, molded, formed, or otherwise processed into intermediate or final products.

(14)  "Process water" means any raw, service, recycled, or reused water that contacts the plastic product or contacts shaping equipment surfaces, including but not limited to molds and mandrels, that come in contact with the plastic product.

(15)  "Volume of process water used per year" means the volume of process water that flows through a plastics molding and forming process over a period of one year.

History: Cr. Register, October, 1987, No. 382 , eff. 11-1-87.