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HomeMy WebLinkAboutNC0003719_Effuent Limit_20171204December 4, 2017 Ms. Teresa Rodriguez Engineer NPDES Complex Permitting Unit North Carolina Department of Environmental Quality Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Subject: Draft NPDES Permit Renewal Permit NC0003719 DAK Americas Cedar Creek Site WWTP Cumberland County Class 2 Facility Dear Ms. Rodriguez: (RECEIVED/DENR/DWR DEC 12 2017 Nater Resources Permitting Section DAK Americas received the draft permit to renew its NPDES permit on November 7, 2017 and a copy of the Fact Sheet on November 8, 2017. DAK is submitting comments on two aspects of the draft permit: 1. TSS Limit at Outfall 002 2. Sample location for Total Residual Chlorine and pH. DAK's concerns and recommended alternatives for how to address these issues are presented in the attachment. If you have questions or need additional information please contact Elizabeth Wike at (910) 512-4883 or ewike@alpekpolyester.com. Sincerely, �4 Matthew Hendrickson Site Manager Attachments (3) DAK's concerns and alternatives Table I — Calculations for TSS limits Table 2 — Industry Effluent Guidelines, Ratio of TSS: BOD Cedar Creek Site • 3216 Cedar Creek Rd. • Fayetteville, NC 28312 910-433-8200 (phone) 9 910-433-8366(fax) www.dakamericas.com DAK's Concerns and Alternatives for Draft Permit NC0003719 TSS Limit for Outfall 002 Existing Permit: 1801bs/day Draft Permit: 90 lbs. /day DAK Proposed Permit Limit 194 lbs/day The draft permit modifies the limits for BOD and TSS at Outfall 002. NC DEQ calculated the limits using updated flows for the DAK Americas Resins and Batch Plants (DAK) and for Clear Path Recycling (CPR). The limits for the DAK portion of the effluent were based on effluent guideline limits whereas the limits for the CPR portion of the effluent were based on best professional judgment. We agree with the DAK portion of the calculation of the limits however, we question the basis for the CPR portion of the calculation. The Fact Sheet states on page 7, "The facility indicated removal rate is 95% " This statement was made in a conversation during a site visit conducted on June 14, 2017 but the comment pertamed to BOD, not both BOD and TSS. The characteristics of solids in the influent and in the effluent are quite different. The TSS in the influent consists of solids removed during bottle washing operations at CPR (mostly adhesives and disintegrated fiber labels). These solids are degraded during the biological treatment process. TSS in the effluent comes largely from the microorganisms in the activated sludge system used to treat the wastewater. DAK has reviewed the EPA Effluent Guidelines for the wastewater of a wide range of industries (sanitary, dairy, gram, pulp and paper, textiles, OCPSF, etc.). In general, the ratio of the concentration of TSS to BOD in the effluent ranges from 1.0 for sanitary wastewater to greater than 2.0 for wastewater from some subcategories of the pulp and paper industry. The ratio of TSS to BOD for the OCPSF industry is 1.7. Sanitary waste water is a relatively easily treated effluent whereas the wastewater from CPR is more complex. In the draft permit the ratio of TSS to BOD in the limits for the CPR effluent is 0.4, a value that is much lower than those found in the Effluent Guidelines. Furthermore, DAK would have extreme difficulty in meeting the TSS limit since the draft permit reduces the TSS limit by half DAK requests that NC DEQ recalculate the TSS limit by using a 95% reduction factor for BOD and a TSS to BOD ratio of 1.3 for CPR wastewater. Table 1 compares the TSS calculations for the existing permit, the draft permit, and DAK's proposed permit limit. Table 2 shows the ratio of TSS to BOD for various industries. Sample Location for Total Residual Chlorine and pH The draft permit changes the sampling location for Total Residual Chlorine and pH to the box combining effluents of outfalls 001 and 002. Currently Total Residual Chorine (TRC) and pH for water from the wastewater treatment plant are sampled at Outfall 002 near the flow meter where there is easy access. There are no monitoring requirements for Outfall 001 under the existing permit. DAK understands why NCDEQ would like to test these parameters in the combined effluent however there are a couple of points that need to be considered. First, both TRC and pH have very short holding times Due to the location of the combined effluents, it would be very difficult to collect both of these samples and make it back to the laboratory within the 15 -minute holding time. Secondly, there are safety and accessibility concerns. This is a hard location to sample. DAK recommends that the monitoring for TRC and pH for Outfall 002 continue to be at the existing location and that monitoring requirements for TRC and pH be added for Outfall 001. Cedar Creek Site • 3216 Cedar Creek Rd • Fayetteville, NC 28312 910-433-8200 (phone) • 910-433-8366(fax) www.dakamericas.com Cedar Creek NPDES Permit NC0003719 Effluent Limit Calculations Table 1- Calculations for TSS Limit PermitNC0003719 NPDES Limits Clear Path Recycling CPR Resins Plant Sanitary Existing Permit Draft Permit Proposed Existing Permit Draft Permit Proposed 143 Flow, mgd 0.111 0.250 0.250 0.127 0.127 0.005 Influent Influent Concentration Influent Concentration BOD, mg/L TSS, mg/L 850 785 1113 442 NA NA NA NA NA NA NA NA % Reduction 85% 95% BOD 95% Effluent Effluent Concentration Effluent Guidelines (Monthly Average) BOD, mg/L TSS, mg/l. Ratio TSS:BOD 128 118 092 56 22 0.40 56 72 130 24 40 167 24 40 167 24 40 1.67 30 30 100 Effluent Permit Limits BOD, lbs/day TSS, lbs/day 118 1 109 116 46 116 151 25 42 25 42 1 1 PermitNC0003719 NPDES Limits Combined Effluent (CPR + Resins + Sanitary) Existing Draft DAK Permit Permit Proposed 158 143 143 180 90 194 Table 2 - Industry Effluent Guides Permit NC0003719 Ratio of TSS:BOD Ratio of TSS:BOD BOD TSS concentrations Daily Mo Daily Mo Daily Monthly mg/L mg/L mg/l. mg/L Regulatory Reference Part 414 -Organic Chemicals, Plastics, and Synthetic Fibers Rayon Fibers 20 17 64 24 130 40 40 CFR 414 21 Subpart B Other Fibers 24 20 48 18 115 36 40 CFR 414 21 Subpart C Thermoplastic Resins 20 1.7 64 24 130 40 40 CFR 414 21 Subpart D DAK Resins Plant Thermosetting Resins 13 11 163 61 216 67 40 CFR 414 21 Subpart E Commodity Organic Chemicals 19 15 80 30 149 46 40 CFR 414 21 Subpart F Bulk Organic Chemicals 17 14 92 34 159 49 40 CFR 414 21 Subpart G Specialty Organic Chemicals 15 13 120 45 183 57 40 CFR 414 21 Subpart H Ratio of TSS:BOD Other Industry concentrations Part 405 - Dairy Products Processing Point Source Daily Monthly Subpart Description Receiving Stations 15 15 A 405 12 Receiving more than 150,000 Ib/day of milk equivalent Receiving Stations 15 15 A 405 12 Receiving less than 150,000 Ib/day of milk equivalent Receiving Stations 13 13 A 405 15 Standards of performance for new sources Fluid Products 16 15 8 405 22 Receiving more than 250,000 lbs/day of milk equivalent Fluid Products 23 15 B 405 22 Receiving less than 250,000 lbs/day of milk equivalent Fluid Products 13 13 B 405 25 Standards of performance for new sources Cultured Products 15 15 C 405 32 Receiving more than 60,000 Ib/day of milk equivalent Cultured Products is 15 C 405 32 Receiving less than 60,000 Ib/day of milk equivalent Cultured Products 13 13 C 405 35 Standards of performance for new sources Butter 15 15 D 405 42 Processing more than 175,000 Ib/day of milk equivalent Butter 15 15 D 405 42 Processing Less than 175,000 Ib/day of milk equivalent Butter 1.3 13 D 405 45 Standards of performance for new sources Cottage Cheese and Cultured Cream Cheese 15 15 D 405 52 Processing more than 25,000 Ib/day of milk equivalent Cottage Cheese and Cultured Cream Cheese 15 15 D 405 52 Processing less than 25,000 Ib/day of milk equivalent Natural and Processed Cheese 15 15 F 405 62 Processing more than 100,000 Ib/day of milk equivalent Natural and Processed Cheese is 15 F 405 62 Processing less than 100,000 Ib/day of milk equivalent Natural and Processed Cheese 13 13 F 405 65 Standards of performance for new sources Fluid Mix for Ice Cream and Other Frozen De55e 15 15 G 405 72 Input of more than 85,000 Ib/day of milk equivalent Fluid Mix for Ice Cream and Other Frozen Desse 15 15 G 405 72 Input of less than 85,000 ib/day of milk equivalent Fluid Mix for Ice Cream and Other Frozen Desse 13 13 G 405 75 Standards of performance for new sources Ice Cream, Frozen Desserts, Novelties and Othe 15 15 H 405 82 Input of more than 85,000 ib/day of milk equivalent Ice Cream, Frozen Desserts, Novelties and Othe 15 15 H 405 82 Input of less than 85,000 lb/day of milk equivalent Ice Cream, Frozen Desserts, Novelties and Othe 13 13 H 405 85 Standards of performance for new sources Condensed Milk 15 15 140592 Condensing more than 100,000 lbs/day of milk equivalent Condensed Milk 15 20 140592 Condensing less than 100,000 lbs/day of milk equivalent Condensed Milk 13 13 140595 Standards of performance for new sources Dry Milk 14 15 J 405 102 Input equivalent to more than 145,000 Ib/day of milk equivalent Dry Milk 15 15 J 405 102 Input equivalent to less than 145,000 Ib/day of milk equivalent Dry Milk 13 Condensed Whey 15 Condensed Whey 15 Condensed Whey 13 Dry Whey 1.5 Dry Whey 15 Dry Whey 13 Part 406 - Grain Mills Point Source Category 1.5 Corn Wet Milling 16 Corn Wet Milling 27 Corn Wet Milling 13 Corn Dry Milling 09 Corn Dry Milling 05 Normal Wheat Flour Milling 13 Bulgur Wheat Flour Milling 1.0 Bulgur Wheat Flour Milling 0.7 Normal Rice Milling 05 Parboiled Rice Milling 06 Parboiled Rice Milling 04 AnimalFeed 1.0 Hot Cereal BPT Ready -to -Eat Cereal 10 Ready -to -Eat Cereal 0.7 Wheat Starch and Gluten 10 Wheat Starch and Gluten 10 Part 430 - The Pulp, Paper, and Paperboard Point Source Category Dissolving Kraft 1.7 Dissolving Kraft 2.2 Dissolving Kraft 2.0 Dissolving Kraft 24 Dissolving Kraft 18 Bleached Papergrade Kraft and Soda 20 Bleached Papergrade Kraft and Soda 18 Bleached Papergrade Kraft and Soda 18 Bleached Papergrade Kraft and Soda 17 Bleached Papergrade Kraft and Soda 2.1 Bleached Papergrade Kraft and Soda 16 Bleached Papergrade Kraft and Soda 18 Bleached Papergrade Kraft and Soda 23 Bleached Papergrade Kraft and Soda 26 Bleached Papergrade Kraft and Soda 27 Bleached Papergrade Kraft and Soda 26 Unbleached Kraft Subcategory 21 Unbleached Kraft Subcategory 16 Unbleached Kraft Subcategory 21 Unbleached Kraft Subcategory 16 13 J 405.105 Standards of performance for new sources 15 K 405.112 over 300,000 Ib/day of fluid raw whey input 15 K 405 112 less than 300,000 Ib/day of fluid raw whey input 13 K 405 115 Standards of performance for new sources 1.5 L 405.122 Input equivalent to more than 57,000 Ib/day of 40 percent solids shey 1.5 L 405 122 Input equivalent to less than 57,000 Ib/day of 40 percent solids shey 1.3 L 405 125 Standards of performance for new sources 12 A 40612 (a) 20 A 40612 (b) For plant producing modified starches of at least 15% per month 13 A 40615 Standards of performance for new sources 09 B 406 22 BPT 05 B 406 25 Standards of performance for new sources C 406 32 No discharge of wastewater 1.0 D 406 42 BPT 0.7 D 406 45 Standards of performance for new sources E 406 52 No discharge of wastewater 0.6 F 406 62 BPT 04 F 406 65 Standards of performance for new sources G 406 72 No discharge of wastewater H 406 82 No discharge of wastewater 1.0 140692 BPT 08 140695 Standards of performance for new sources 10 J 406102 BPT 10 J 406105 Standards of performance for new sources 16 A 43012 (a) BPT 22 A 43012 (b) BPT 2.0 A 43012 (c) BPT 2.3 A 43012 (d) BPT 17 A 43015 Standards of performance for new sources 20 B 430 22 (a) Market Pulp 17 B 430 25 (a) Market Pulp NSPS 18 B 430 22 (a) Paperboard, coarse paper, and tissue paper 17 B 430.25(a) Paperboard, coarse paper, and tissue paper NSPS 22 B 430 22 (a) Pulp and fine papers 15 B 430 25(a) Pulp and fine papers NSPS 19 B 430.22 (a) Soda facilities where pulp and paper are produced 24 B 430 22 (b) Market Pulp with wet debarking 26 B 430 22 (b) Paperboard, coarse paper, and tissue paper with wet debarking 29 B 430 22 (b) Pulp and fine papers with wet debarking 25 B 430 22 (b) Soda facilities where pulp and paper are produced with wet debarking 21 C 430 32 Unbleached kraft facilities 16 C 430 32 Unbleached kraft -neutral sulfite semi -chemical process 21 C 430 32 BCT unbleached kraft facilities 16 C 430 32 BCT Unbleached kraft -neutral sulfite semi -chemical process Unbleached Kraft Subcategory Unbleached Kraft Subcategory Part 410 - Textile Mills Point Source Category Wool Scouring Subcategory Wool Finishing Subcategory Wool Finishing Subcategory Low Water Use Processing Subcategory Low Water Use Processing Subcategory Woven Fabric Finishing Subcategory Woven Fabric Finishing Subcategory Woven Fabric Finishing Subcategory Woven Fabric Finishing Subcategory Knit Fabric Finishing Subcategory Knit Fabric Finishing Subcategory Knit Fabric Finishing Subcategory Knit Fabric Finishing Subcategory Carpet Finishing Subcategory Carpet Finishing Subcategory Stock and Yarn Finishing Subcategory Stock and Yarn Finishing Subcategory Nonwoven Manufacturing Subcategory Nonwoven Manufacturing Subcategory Felted Fabric Processing Subcategory Felted Fabric Processing Subcategory 17 17 C 430 35 NSPS for unbleached kraft facilities where linerboard is produced 18 18 C 430.35 NSPS for unbleached kraft facilities where bag paper and other mixed products are produced 30 30 A 410 12 BPT 16 16 B 410 12 BPT 3.0 26 B 410 25 NSPS 1.0 10 C 410 32 BPT General Processing 1.0 10 C 410 35 HSPS General Processing 27 27 D 410 42 BPT 27 23 D 410 45 NSPS - Simple Manufacturing Operations 39 34 D 410 45 NSPS - Complex Manufacturing Operations 2.8 2S D 410 45 NSPS - Desizmg 44 44 E 410 52 BPT 37 31 E 410 55 NSPS - Simple Manufacturing Operations 25 22 E 410 55 NSPS - Complex Manufacturing Operations 37 31 E 410 55 NSPS - Hosiery Products 14 14 F 410 62 BPT 19 16 F 410 65 NSPS 26 26 E 410 72 BPT 27 23 E 410 75 NSPS 1.4 14 F 410 82 BPT 19 16 F 410 85 NSPS 16 16 G 410 92 BPT 30 26 G 410 95 NSPS