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Home My WebLink AboutDWQ-2023-200073APPENDIX I.Y - Storm Water Discharges Associated with Industrial Activity from Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries Coverage of This Section. Discharges Covered Under This Section. The requirements listed under this Part shall apply to storm water discharges from the following activities: Table I.Y.1 – Sector Y:Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries SIC Code Activity Represented 3011 Tires and Inner Tubes 3021 Rubber and Plastics Footwear 3052, 3053 Gaskets, Packing and Sealing Devices, and Rubber and Plastic Hoses and Belting 3061, 3069 Fabricated Rubber Products, Not Elsewhere Classified 3081 – 3089 Miscellaneous Plastics Products 3931 Musical Instruments 3942 – 3949 Dolls, Toys, Games, and Sporting and Athletic Goods 3951 – 3955 Pens, Pencils, and Other Artists’ Materials (Except SIC Code 3952 which is addressed in Appendix I.C) 3961, 3965 Costume, Jewelry, Costume Novelties, Buttons, and Miscellaneous Notions, Except Precious Metal 3991 – 3999 Miscellaneous Manufacturing Industries Sector Specific Limitations on Coverage. There are no additional limitations on coverage other than those listed in Part I.C. Sector Specific Prohibition of Non-Stormwater Discharges. There are no additional prohibited nonstormwater discharges beyond those in Part I.D of this permit. Sector Specific Control Measures and Effluent Limits. In addition to the control measures and effluent limits in Part III, the permittee shall implement the following to minimize pollutant discharges, as applicable: Rubber Manufacturers. The permittee shall minimize the discharge of zinc in stormwater discharges through implementation of control measures, such as the following, where feasible: Using chemicals purchased in pre-weighed, sealed polyethylene bags; Storing in-use materials in sealable containers, ensuring an airspace between the container and the cover to minimize “puffing” losses when the container is opened; Using automatic dispensing and weighing equipment; Ensuring proper handling and storage of zinc bags at the facility through implementation of control measures such as the following, where feasible: Employee training on the handling and storage of zinc bags; Indoor storage of zinc bags; Cleanup of zinc spills without washing the zinc into the storm drain; and Using 2,500-pound sacks of zinc rather than 50- to 100-pound sacks. Minimizing discharges of zinc from dumpsters through implementation of control measures such as the following, where feasible: Covering the dumpsters; Moving the dumpsters indoors; and Providing a lining for the dumpsters. Minimizing contribution of zinc to stormwater from dust collection and baghouses through regularly replacing or repairing, as appropriate, improperly operating dust collection baghouses; Minimizing contamination of stormwater as a result of dust generation from rubber grinding operations and, where feasible, installing a dust collection system; and Minimizing the potential for stormwater contamination from drips and spills of zinc stearate slurry that may be released to the storm drain and, where feasible, using alternative compounds to zinc stearate. Plastic Products Manufacturing. The permittee shall minimize the discharge of plastic resin pellets in stormwater discharges through implementation of control measures, such as the following, where feasible: Minimizing spills; Cleaning up of spills promptly and thoroughly; Sweeping thoroughly; Pellet capturing; Employee education; and Disposal precautions. Sector Specific Inspection Requirements. There are no additional inspection requirements beyond those in Part IV.A of this permit. Sector Specific Plan Requirements. Summary of Potential Pollutant Sources. In addition to the requirements in Part VII.D.5.a, the Plan summary of potential pollutant sources inventory shall include the following, where applicable: Rubber Manufacturers. The permittee shall document in the Plan the uses of zinc at the facility and the possible pathways through which zinc may be discharged in stormwater. Monitoring Requirements. Analytical Benchmark Monitoring. The following analytical benchmark monitoring parameters shall apply specifically to sector Y facilities. Parameters found in this Part apply to both primary industrial activities and any co-located industrial activities. Table I.Y.2 – Analytical Benchmark Monitoring Parameters for Rubber Products Manufacturing (SIC 3011, 3021, 3052, 3053, 3061, 3069) Parameter Benchmark Monitoring Concentration Total Recoverable Zinc (freshwater) Hardness Dependent 1 Total Recoverable Zinc (saltwater) 2 0.090 mg/L The freshwater analytical benchmark monitoring values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water to identify the applicable ‘hardness range’ for determining the analytical benchmark monitoring value applicable to the facility. Hardness dependent analytical benchmark monitoring shall follow the table below: Freshwater Hardness Range Zinc (mg/L) 0.00 – 24.99 mg/L 0.037 25 – 24.99 mg/L 0.052 50 – 74.99 mg/L 0.080 75 – 99.99 mg/L 0.107 100 – 124.99 mg/L 0.132 125 – 149.99 mg/L 0.157 150 – 174.99 mg/L 0.181 175 – 199.99 mg/L 0.204 200 – 224.99 mg/L 0.227 225 – 249.99 mg/L 0.249 250+ mg/L 0.260 If hardness cannot be determined (groundwater or inaccessible waterbodies), use the most conservative values (0-24.99 mg/L range). Saltwater benchmark values apply to stormwater discharges into saline waters where indicated. Numeric Effluent Limitation Monitoring. There are no numeric effluent limitation parameters for Sector Y facilities in this permit.Any additional monitoring and reporting requirements shall be based on the nature of activities at the facility and the facility stormwater discharges, in accordance with Part V.D.2.