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Contract analysis / npdes-permit-application-cover-letter.docx
npdes-permit-application-cover-letter.docx
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1. Equalization Basin. An equalization basin designed to attenuate flow and loading varia
1. Equalization Basin. An equalization basin designed to attenuate flow and loading variations inherent in batch soybean processing operations, thereby providing a consistent influent to downstream treatment units.
2. Dissolved Air Flotation (DAF) Unit. A dissolved air flotation unit designed to remove
2. Dissolved Air Flotation (DAF) Unit. A dissolved air flotation unit designed to remove suspended solids, oils, and greases from the equalized wastewater stream prior to biological treatment.
3. Three-Cell Aerated Lagoon. A three-cell aerated lagoon system with a total surface are
3. Three-Cell Aerated Lagoon. A three-cell aerated lagoon system with a total surface area of 4.2 acres and an 18-day hydraulic retention time. The aerated lagoon system provides biological treatment for the removal of biochemical oxygen demand (BOD), ammonia nitrogen, and additional suspended solids.
4. Ultraviolet (UV) Disinfection. An ultraviolet disinfection system positioned immediate
4. Ultraviolet (UV) Disinfection. An ultraviolet disinfection system positioned immediately upstream of the discharge point to provide pathogen reduction prior to discharge to Sweetland Creek. The treatment system is designed to achieve the proposed effluent limits set forth in the application narrative and summarized below. Detailed treatment system design descriptions, process flow diagrams, and design calculations
1. NPDES Permit Application Narrative (prepared by Calderwood & Harkness LLP).
1. NPDES Permit Application Narrative (prepared by Calderwood & Harkness LLP).
2. Completed IDNR Form 1 and Form 2C (Industrial Wastewater Discharge Application).
2. Completed IDNR Form 1 and Form 2C (Industrial Wastewater Discharge Application).
3. Process wastewater characterization data and mass-balance analysis.
3. Process wastewater characterization data and mass-balance analysis.
4. Treatment system design description and process flow diagrams (prepared by Ridgeline E
4. Treatment system design description and process flow diagrams (prepared by Ridgeline Engineering Group LLC).
5. Proposed effluent limits table with supporting calculations.
5. Proposed effluent limits table with supporting calculations.
6. Antidegradation review discussion.
6. Antidegradation review discussion.
7. Stormwater Pollution Prevention Plan (SWPPP) (prepared by Pinnacle Environmental Consu
7. Stormwater Pollution Prevention Plan (SWPPP) (prepared by Pinnacle Environmental Consultants Inc.).
8. Site maps, including facility layout, outfall locations, and receiving water identific
8. Site maps, including facility layout, outfall locations, and receiving water identification.
9. Copy of Muscatine County Conditional Use Permit No. MC-2022-041 (approved November 15,
9. Copy of Muscatine County Conditional Use Permit No. MC-2022-041 (approved November 15, 2022).
10. Check in the amount of $3,600.00 payable to the Iowa Department of Natural Resources
Standard
⚑ Commercial term
10. Check in the amount of $3,600.00 payable to the Iowa Department of Natural Resources (NPDES Permit Application Fee). Technical Support Acknowledgment We wish to acknowledge the contributions of the technical consultants who prepared the scientific and engineering components of this application. The process wastewater characterization studies and the Stormwater Pollution Prevention Plan (SWPPP) were prepared by Pi