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HomeMy WebLinkAboutNC0001970_Annual Report_20190329 • March 29, 2019 Alan Klimek, P.E. R�G�t\15);p° Director Nr 0 a 2419 Division of Water Quality NPDES East Unit eg wat�r section 1617 Mail Service Center P®rmit',1n9 Raleigh,NC 27699-1617 Re: Annual Chloride Reduction Evaluation Report(2018) Bay Valley Foods, LLC, - Faison,NC NPDES Permit No.NC0001970 Dear Mr. Klimek; In accordance with Special Condition A. (5)b.;NPDES Permit No.NC0001970, Bay Valley Foods, LLC-Faison,NC (BVF) continues in efforts to study and evaluate chloride removal technologies and chloride reduction strategies. Please find enclosed a copy of the facility's 2018 Annual Chloride Reduction Evaluation Report. As stated in previous reports, through the 1980's, 1990's and 2000's significant investments were made on process improvements,new equipment purchases, and process change strategies aimed at reducing salt use and subsequent chloride discharges. Notable investments and process changes include replacement of wooden fermentation tanks, reducing salt concentration in brines, process automation, and brine recycling technology. These early efforts resulted in the most substantial reductions in salt use with subsequent focus on pollution prevention efforts further reducing chloride discharges to surface water. As noted in our recent Chloride Variance Request and all previous Annual Chloride Reduction Evaluation Reports, there have been no economically feasible scientific breakthroughs in chloride removal technologies applicable to the production processes employed at Bay Valley Foods, LLC—Faison,NC. Efforts again continued through 2018 in the areas of pollution prevention and improved process control/automation, focused on reducing brine loss and salt waste. If you have any questions concerning this submittal, please contact me at (910) 267-4711. Sincerely, BAY A LEY FOODS, LLC Chad Tennant Plant Manager Bay Valley Foods, LLC-Faison, NC Enclosure Cc: Kisa Baskin Kaity Lindner Donovan Brock Alyssa Berinhout • ANNUAL CHLORIDE REDUCTION EVALUATION REPORT YEAR 2018 For Bay Valley Foods, LLC - Faison, NC NPDES Permit No. NC0001970 Prepared for: Bay Valley Foods, LLC 354 Faison Ave. Faison, North Carolina 28341 Prepared by: Solutions-IES, a division of Draper Aden Associates 1101 Nowell Road Raleigh, North Carolina 27607 March 29, 2019 Project Number 1 81 1 7804-01 0701 c J ((( Candy E. Elliott, P.G. James Y. Joyner, II, RSM Project Geologist Environmental Team Leader March 2019 EXECUTIVE SUMMARY This report is being submitted in accordance with Special Condition A. (5) b, which states; "The permittee shall continue to study and evaluate new and emerging chloride removal technologies and reduction methods and shall report its findings directly to the Division of Water Quality annually on or before March 31st of each year." The annual report shall include a summary of findings from a qualified waste reduction specialist employed to specifically evaluate source reduction of chloride." This report will be limited to chloride, chloride discharges and approaches/technologies researched, evaluated, and/or implemented for the reduction of chloride discharges during the calendar year 2018. Comparisons are made to previous years including 1996, the benchmark year. Table 1.0 and Chart#5 summarize monthly average chloride discharges in pounds per day for calendar year 2018. There were no exceedances of either the "Monthly Average Discharge Limit" or the "Daily Maximum Chloride Discharge Limit" in 2018. Table 2.0 and Chart#2 provide annual production information for 2018 and for previous years, measured in equivalent production units, as well as the pounds of chloride discharged per equivalent production unit. Production volume in 2018 decreased 6.9% compared to 2017. The 2018 chloride lbs. discharged per production unit ratio increased 30% to 0.34 as compared to 0.26 in 2017. The increase appears to be anomalous, and the overall trend is decreasing. Over the past five years (2014 through 2018), the average chloride lbs. per equivalent unit of production is 0.24 lbs./eq.unit. Table 3.0 and Chart#4 summarize the in-stream chloride concentrations at the established monitoring points located both upstream and downstream of the facility's treated process wastewater discharge outfall. Data is provided back to 1997, when in-stream chloride concentration monitoring initially became an NPDES permit requirement. In-stream chloride concentrations at all monitoring locations, including upstream from the facilities wastewater discharge outfall, peaked in 2007 as a result of extended drought conditions in the Faison area and subsequent low stream flow in the receiving stream. More normal precipitation in subsequent years has resulted in in-stream sampling data that shows a long-term decline in chloride concentration at all monitoring locations. Chloride concentrations at all downstream monitoring location decreased in 2018, as compared to 2017. Table 4.0 summarizes data pertinent to chloride discharges from 2005 through 2018. ► Bay Valley Foods, LLC - Faison, NC did not exceed the "Daily Maximum Chloride Discharge Limit" or the "Monthly Average Discharge Limit" in 2018. ► Chlorides discharged per equivalent production unit increased 30% compared to 2017, yet still reflects a significant decrease compared to the benchmark year of 1996 (0.56 lbs CL- /Eq. Unit). In 2018 it was calculated at 0.34 pounds of chlorides discharged per equivalent production unit. (Refer to Chart#3) 1 ► The 2018 annual production total of 5.486million equivalent production units represents a 6.9% decrease from 2017 production throughput. (Refer to Chart#2) ► The calculated annual pounds of chlorides discharged (1,869,489 lbs.) in 2018 is 48% less than the largest amount discharged in 2007. BASIC INFORMATION Bay Valley Food, LLC — Faison, NC (BVF), remains committed to continue efforts to maintain the downward trend in chloride discharges from its production facility. Through emphasis on its comprehensive pollution prevention; advanced process control and automation aimed at reducing brine loss; replacement of inefficient equipment; and ongoing efforts in the identification and implementation of new and innovative reduction opportunities, BVF maintains its focus on the reduction of chlorides from its waste stream (Refer to Chart#1). BVF will continue to investigate and monitor technological advances that may have potential application to the pickle processing industry and supports research efforts in this area through its membership in professional trade organizations such as Pickle Packers International. BVF is willing to implement cost-effective chloride removal technologies and pollution reduction measures that can be proven effective and not compromise or impair finished product quality and/or characteristics. Table 1.0 2018 Monthly Chloride Discharge Data Current Chloride Discharge Limits: Monthly Average = 13,476 lb/day Daily Maximum = 19,120 lb/day Discharges (Ib/day) 2018 Month Max Min Avg. January 6168 1110 2989 February 6036 2793 4106 March 12750 5007 7491 April 12740 1439 6909 May 10850 2938 6117 June 8722 6162 7261 July 6584 4059 5419 August 7969 3250 5208 September 5117 2748 4079 October 8278 2958 4693 November 9315 2358 3916 December 4833 268 3098 * Denotes exceedance of monthly average limit. ** Denotes exceedance daily maximum limit. 3 a) O 0 co +J C O• .0 . T- N07N r) N- N- 0 ODOLC) tn 0 0 N- N OD CO �t 747, Cam' Zf LOr- f) 4O00001010101014- MMMNN Nr- NNM u D W O O O O O O O O O O O O O O O O O O O O O O O O O N CL L O 0 a) U 73 O c +J .00 NU 1'U it N 0 4- t1) N0) CO0) 4- Ntc) C0 'd' ON- NMLUC0N0 � 40) O) > E N- ) NONtnOD LID r- O000) t0OONODNODC00O0O0 V 25 � 0 D to 4 6N- f— N- 1— 600 N.: 0) CO 00 CO 00 N N 6 (0 N 66 to L 0 o- 2 1- a) d W E Z C 0 C = 0 1 0 L (ONOOO) O '-- CV co46 0N- O00) O — CV00ItLUC0NOO 0- 0 CD 0) 0) 0) 0) 0000000000 t O } 0) 0) 0) 0) 0000000000000000000 r- r- CV CV N N CV CV N CV CV CV CV CVCV CV CV CV CV N CV T6 7 NNNNNNNNNNNNNNNNNNN - - -• -< 0000000000000000000000 0 D -� . . . . . . -A O O O O O O O O O O CO CO CO 00 �J0) 01 A W N - OCO00 -JO01 - W N - 0000 -J -1 7 CC -pm N -L N N N N 07 N W W N W N N N N W N N N N O W CO 4 O 01 v . CO W 0) 0) �J W - N O O 01 N W T < a 303 to J'D O w ZI N A A W W U1 -J CO CO • N 01 v . W v v 0) 0) CO -J O 01 0) 11000N - 00 W O -A W W NO0) 0) NU1COUIO - O) -I - Jn 3 - NNOO -J - O .A W AO000 . - OW - O) W -• (DC) w 3 ° 0 OM 0 ONOAM -Jd) .P J� O) 0 N -1O W N - OON NN CCD to 3 3 I- 0 01 -4mW O O U1 W N v O N W w W o CO O 0 O CO 0 ON W N fD 03 3 • Table 4.0 COMPARISON OF ALL DATA 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2018 2018 Data Description Annual 2,731,749 3,133,189 3,588,806 3,250,525 3,090,730 3,193,908 1,962,923 1,464,092 1,273,754 1,418,341 1,218,420 1,497,130 1,542,683 1,869,489 Chloride Discharge (pounds) Annual 8,234,700 9,039,500 8,981,990 8,572,000 8,821,135 8,226.346 7,846,314 7,258,154 6,816,632 6,602,658 7,012,627 6,837,706 5,896,035 5,486,941 Production (Equivalent Units) Lbs.of 0.33 0.35 0.40 0.38 0.35 0.39 0,25 0.20 0.19 0.21 0,17 0,22 0.26 0.34 Chlorides/ Equivalent Unit Annual 119.20 98,03 109,11 94.30 101.78 107.7 115.32 9760 91.61 114,47 133,60 133.77 114,29 118,23 Water Use (MG) Annual 4,409,000 4,929,000 6,652,000 6,104,000 4,913,000 4,020,000 1,998,000 3,702,000 3,805,000 3,228,325 2.603,393 4,259,319 6,471,116 6,578,677 NaCI& CaCI Purchases (lbs) Salt Use 0.54 0.55 0.74 0.71 0.56 0.49 0.25 0,51 0.56 0.49 0.37 0.62 1.10 1,20 (lbs.)/ Equivalent Unit 6 PRODUCTION Bay Valley Foods, LLC - Faison, NC continues to use an established formula whereby all production types, in all facilities, are normalized. The unit of measure is referred to as an "Equivalent Production Unit" and allows for a fair and equal comparison of differing sized containers from 10 ounce jars through 5-gallon buckets. Basically, this unit brings all production to a case equivalent volume. This allows for a fair comparison of production between facilities, as well as between production years, and provides a balanced method to evaluate performance. The Faison, NC facility production requirements increased annually since the benchmark year of 1996, peaking in 2006. In 2006 the production requirement increased to its highest level since the benchmark year of 1996 to 9.04 million equivalent production units. Since 2006, the trend indicates a reduction in production throughput (Refer to Chart#2). 2018 production volume was 5.487 million units, a 6.9% decrease from 2017 volume (5.896 million units). As a result of the ongoing commitment from facility leadership, the pounds of chloride discharged per equivalent production unit continue to show a steady long-term downward trend. (Refer to Chart#3). Data from 2018 represents a slight increase in lbs. of chloride discharged per equivalent unit of production compared to the long term average of 0.32 lbs per equivalent unit discharged, dating back to the benchmark year of 1996. Over the past five years (2013 to 2018), the average chloride lbs. per equivalent unit of production is 0.24 lbs./eq.unit. While 2017 and 2018 indicate a slight increase in the lbs./eq. unit, it continues to be well below the 2007 maximum. 7 EVALUATED AND/OR IMPLEMENTED TECHNOLOGIES AND APPROACHES Summary of Chloride Reduction Strategies Implemented and/or Evaluated at Faison, NC • 1982 through 1990—Replace all wood fermentation tanks with fiberglass or plastic; • 1982 through 1994—Salt Use Reduction in Brining- %salt reduced from 15.8%to 6.3% salt; (Substitute calcium chloride and acetic acid in brine prep) • 1987 to 1989—Recycle Brine—Currently recycle 100%of brine; • 1988—Desalting Operation Moved to Brine Yard; • 1991 —Enhanced Automation of 5-Gallon Production Line; • 1991 —Enhanced Automation of Major Customer Brine System; • 1992—Replace Open-Top Blancher with Rotary Blancher; • 1992—Enhanced Bulk Product Handling Processes; • 1993—Upgrade Brine-making Station; • 1993—Replace Brine Yard Pickle Pump; • 1994—Install Titanium Heat Exchanger—Brine Recycling/Pasteurization Process; • 2002- Increase Brine Reclaim; • 2003, 2004, 2005, 2006—Evaluate Use of De-Salt Water for Brining and/or Product Fluming; • 2003, 2004, 2005, 2006—Evaluate Use of De-Salt Water for Subsequent De-Salting Operations; • 2003,2004—Evaluate Recovery of Bottom 2-inches of Concentrated Brine Left in Fermentation Tanks After Cleaning; • 2004—Install De-Salt Flume Conveyor; • 2004—Evaluate De-Salt Brine Filtering for Possible Reuse; • 2004, 2005 —Evaluate De-Salting through the Lyco Blancher(Continuous Process vs. Batch Process); • 2004, 2005—Evaluate Rapid De-Salt Process; • 2005, 2006—Evaluate Improvement in Cover Brine Recovery/Blow Lines; • 2005—Evaluate New De-Salting Operation Located in Tank Yard; • 2005 —Install WW Sludge Filter Press and Clean Sludge from WW Treatment Ponds; • 2005, 2006,2007, 2008—Evaluate In-Line De-Salting; • 2005 —Implemented By-Pass Salting/No Fermentation Process; • 2005 (2006, 2007, 2008 2009)—Begin 4-Phase Storm Water Management Project; • 2007,2008—Improvements to Cover Brine Efficiency& Recovery Line 1 and 2; • 2008—Implemented Enhanced Relish Desalting Control; • 2009—Implemented Replace Pickle Conveyor Pump; • 2009—Implemented Upgrade Desalting Operation by Installing Four Additional De-Salt Tanks; • 2011 —Implemented a project to remove excess biomass from Pond 1 of its wastewater treatment system. 1500 tons of biomass was dewatered and removed at a cost of$143,000. 8 • 2012—Continued the removal process of excess biomass from Pond 1 with an additional removal and dewatering of 3000 ton at a cost of$249,000. • 2014 - Continued the removal process of excess biomass from Pond I with an additional removal and dewatering of 3643 ton at a cost of$368,000. • 2016 -Implemented removal process of excess biomass from Pond 2 with removal and dewatering of 3727 tons at a cost of$230,000. • 2016—Implemented removal and replacement of Pond 2 liner and begin construction and lining of Pond 3 at a cost of$500,000. • 2016—Evaluate Reverse Osmosis and Electrodialysis/Electrodialysis Reversal to Reduce Chloride at End-of-Pipe. Neither technology was considered feasible due to cost considerations. • 2017—Completed the excess biomass removal from Pond 3 with removal and dewatering of 1,963 tons at a cost of$336,000. • 2017—Completed installing the new liner at Pond 3 on April 1, 2017 at a cost of$100,000 • 2018—Completed lining Pond 1. Sludge removal cost totaled$285,000. The three ponds have been relined. 9 TECHNOLOGIES & APPROACHES CONSIDERED FOR 2018 AND BEYOND Many projects, programs, process changes and chloride reduction strategies implemented in the past will continue to be utilized into 2018, such as: Bypass Salting/No Fermentation Process The proprietary "No Fermentation" process continues to be a significant process improvement and chloride reduction strategy, and will be considered for all future production opportunities where applicable. Desalt Process Improvements The Faison facility added four (4) portable de-salt tanks for product de-salting. Currently the de- salt process has to be accomplished very quickly to support the production schedule. This quick de-salting process many times results in over de-salting of the product, which in turn requires the re-addition of salt. The result is excess water use, increased salt use and ultimately additional chloride discharges. The four portable de-salt tanks enabled the facility to extend the duration of the de-salt process which will provide improved process control. Status: Successful process improvements were made to the De-Salt process in 2009. Capitol Cost Associated with Improvements- $350,000. Brine Reclaim Process Improvement - 5-gallon Pail Line The installation of catch pans, filter screens, and a brine reclaim tank on the 5-gallon pail line allows for the capture of overflow brine and eventual reuse, rather than discharged as high chloride concentrated wastewater. Status: Successful improvements were made to the brine reclaim system on the 5-gallon pail processing line in 2009. Cost Associated with Improvements - $4,500. Wastewater Treatment Process Improvements Excess biomass accumulation in Pond 3 was removed and the pond was relined. This project was completed in April 2017. In 2017, Bay Valley Foods removed biomass accumulation from Pond 1 and began the process to reline Pond 1. Sludge removal was completed in March 2018, and the liner replacement was completed. Pond 1 aerators were re-wired and the pond was returned to normal operations on May 1, 2018. Status: Successful improvements were made to the wastewater ponds. Sludge removal costs - $285,000. Pickle Packers International (PPI) Bay Valley Foods is a member of, and continues to participate in, the Pickle Packers International organization. Through participation in this organization, Bay Valley Foods remains current on new processing technologies which may include reduced salt use, and wastewater treatment strategies others in the pickle processing industry may have implemented that result in reduced chlorides in wastewater discharges. io Treatment Technologies Ramboll Environ prepared a Chloride Removal Technology Evaluation Report dated January 2017. The report identified several technologies that may be applicable to the BV-Faison facility. The technologies included reverse osmosis, electrodialysis/electrodialysis reversal, chemical product substitution, flow augmentation, and residuals management. BayValley precipitation, 9 9 Foods, LLC is committed to investigating and evaluating any new treatment technology based on technical applicability and feasibility. Il WASTE REDUCTION The ongoing waste reduction efforts at the Facility will continue through 2019 The facility has formed a cross-functional Pollution Prevention Team which meets on a regular basis to discuss and evaluate waste generation and chloride reduction opportunities. A comprehensive pollution prevention program is in place which includes educating employees regarding best waste management practices and the importance of identifying strategies that can reduce chloride discharges. Chloride reduction is a primary focus of the Team along with water conservation, efficient utilization of energy, and waste generation. In addition, the Team considers maintenance practices and other protocols that may result in brine loss. Finally, the Team is continually evaluating processes for redesign consideration with respect to improved efficiency and chloride discharge reduction opportunities. In combination with waste reduction and pollution prevention efforts, Bay Valley Foods, LLC - Faison, NC continues to focus on preventive maintenance programs and giving a priority assignment to any maintenance work order involving process equipment that could result in increased discharge of chlorides. These activities along with employee training help foster and expand a work ethic focused on waste reduction as well as process improvements. The results of these waste reduction efforts can be seen in the decreasing trends in the instream chloride concentrations and average chloride discharge per day. Chart#4 demonstrates that the upstream chloride is at background concentrations. An anomalous peak in downstream chloride concentrations observed in 2007 was attributed to low stream flow conditions throughout the year. The chloride concentration trend from 2007 to 2014 at Downstream Point#1 is decreasing, and while the trend is stable to slightly increasing from 2014 to 2018. Chloride concentration trends in Downstream Point#2 and Downstream Point#3 are decreasing from 2007 to 2018. Chart#5 shows that the average chloride discharge in pounds per day (lbs/day) decreased from 2007 to 2018. From 2014 to 2018, the concentrations have fluctuated, but have remained lower than the 2007 chloride concentrations. The provided charts demonstrate that waste reduction efforts at the BV facility are effective. 12 Charts Chart#1 Annual Chloride Discharges(Ibs) 4. 3.500.000 ::::::: 2.000.000 1,500,000 ....__._ 1.000.000 500.000 0 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Chart#2 Equivalent Units Produced 10,000.000 f----- 9.000.000 8.000.000 7,000.000 — --- ---� — 6.000,000 ♦ 5.000.000 4.000.000 3.000.000 2.000.000 1.000.000 0 • 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Chart#3 Cl- Discharged per Equivalent Unit(Ibs) 0.60 ,., ' z4 4s ?`11f S 1 5'%$r,' 1 Ron 050 0.30 020 fr �I i y x y�ax 0.10 ? ; yL3 +i rr �yrc M�F 4\, 33 3 0.00 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Upstream (Background) Chart#4 —a-- Downstream Point#1 a Downstream Point#2 Instream Chloride Concentration (lbs per day) a Downstream Point#3 Linear(Downstream Point#1) ----Linear(Downstream Point#2) — — Linear(Downstream Point#3) 9" ❑ g 2000 �— 1500 a 1000 ta a 0 500 .._ °_,_ ❑ u a Q a a 0 g a c El— 8 � 8— —o— —6— a— a — 0 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Chart#5 Average Cl- Discharge per Day(Ibs) 12.000 0000 8.000 6.000 141141.11111110 4.000 . 2.000 1 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Chart#6 Average CL-lbs./day 2018 Chloride Limits 30.000 i I 25.000 - I 20.000 — Max Daily Limit 19;i20 lbs 15,000 Monthly Avg Limit 13,476 lbs Vic) 10 000 5 000 _ 0 January February March April May June July August September October November December