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HomeMy WebLinkAboutNC0000272_Annual Report_20210421 evergreen �/ Canton Office - i 75 Main Street• Canton, NC 28716 packaging March 30, 2021 CBC 17-21 CERTIFIED MAIL Return Receipt Requested 7020 0640 0000 4606 2234 North Carolina Department of Environmental Quality Division of Water Resources RECEIVED " ATTENTION: Central Files 1611 Mail Service Center Raleigh,NC 27699-1611 APR 21 2021 NCDEQ/DWR/NPDES Re: NPDES NO.NC0000272 Best Management Practices 2020 Annual Report Blue Ridge Paper Products Inc. d/b/a Evergreen Packaging Canton,NC This letter report(two copies) is the 2020 summary of Best Management Practices (BMP) daily monitoring for the Canton Mill. The report is required on or before March 31'of each year by Special Condition A(6.)Best Management Practices, Section E.4 and Section F.1, of the mill's NPDES Permit No. NC0000272. The BMP action levels established in accordance with permit requirements and in effect for 2020 are as follows: Effective Dates: 1 Jan 2020—31 Dec 2020 Total Influent(TI) Color — Action Level daily monitoring result Action Required 1-Day Upper Action Immediate investigation and documented > 72,500 lbs/day for one day Level (UAL) corrective action 2-day Upper Action > 59,400 lbs/day for two Investigation and documented corrective Level (UAL) consecutive days action 2-day Lower Action > 55,400 lbs/day for two Investigation and documentation Level (LAL) consecutive days Daily records of total influent color are maintained at the mill. These daily color data are compared to BMP action levels every morning. Total influent color exceeded BMP action levels on the dates outlined in the following table. A brief summary of information for these dates are included as required by permit Condition A.(6.), Section E.4. The permit-required BMP investigation reports are maintained at the mill. fresh by design Doing Business in California as Evergreen Beverage Packaging 30 Mar 2020,Page 2 None of the BMP action level days resulted in disruption to the wastewater treatment plant. The Canton Mill met all NPDES annual average effluent limits during 2020. Total Influent Date(s) (TI) Color Action Level and Summary 6—8 January 102,256 lbs/day 1-day UAL/2-day UAL— Investigation and 2020 112,491 lbs/day documented corrective action 79,869 lbs/day Cause(s) In association with a planned mill outage, color material accumulated in the Recovery black liquor sumps. The contents were diverted to the sewers. The waste treatment plant received high color material, which was treated with color reduction polymer. Corrective Action(s) Proactive, frequent checks of area sewers and sump pumps occurred to ensure the gates were closed and sumps were pumping to the proper location. One-hour color sampling was done for the duration of the outage and the use of a chemical color reduction agent increased. There were no NPDES discharge limit color exceedances due to this event. 4 March 2020 79,092 lbs/day 1-day UAL— Immediate investigation and documented corrective action Cause(s) During a planned Recovery outage, material contained in the black liquor sumps was diverted to the waste treatment plant for a period of 50 minutes. Corrective Action(s) This material was captured in a spill protection vessel (a spare clarifier) and was metered back into the waste treatment system for further physical and biological treatment. Treatment efforts resulted in a 46.8% reduction in color. More frequent checks of sump system were implemented to ensure pick up of color material. There were no NPDES discharge limit color exceedances due to this event. Blue Ridge Paper Products Inc. dba Evergreen Packaging—Canton Mill 175 Main Street • PO Box 4000 Canton, North Carolina 28716 • 828-646-2000 30 Mar 2020,Page 3 Total Influent Date(s) (TI) Color Action Level and Summary 6 — 7 March 71,552 lbs/day 1-day UAL/2-day LAL— Investigation and 2020 58,215 lbs/day documented corrective action Cause and Corrective Action(s) During a planned Recovery outage, material contained in the black liquor sumps was diverted to the Waste Treatment plant. Corrective Action(s) The material was chemically and biologically treated prior to reintroduction to the receiving stream, and more frequent inspections of the sump system occurs to ensure the pickup of color material. There were no NPDES discharge limit color exceedances due to this event. 1 April 2020 75,113 lbs/day 1-day UAL— Immediate investigation and documented corrective action Cause(s) During a planned Recovery outage, high-color material that accumulated in black liquor sumps was diverted to waste treatment. Corrective Action(s) More frequent inspections of sumps and conductivity meters occurred, and the material was treated with color reduction agents. The secondary effluent color was decreased using the activated sludge WTP and chemical amendment. There were no NPDES discharge limit color exceedances due to this event. Blue Ridge Paper Products Inc. dba Evergreen Packaging—Canton Mill 175 Main Street • PO Box 4000 Canton, North Carolina 28716 • 828-646-2000 30 Mar 2020,Page 4 Total Influent Date(s) (TI) Color Action Level and Summary 13 April 2020 76,206 lbs/day 1-day UAL— Immediate investigation and documented corrective action Cause(s) During upset conditions in the pulp mill, the color became elevated. The pulp mill experienced run-ability issues, causing a diversion of black liquor to the sewers. Corrective Action(s) The material was treated with color reducing agents, and the area was inspected frequently. The color event was not ongoing. After the flash floods, the flow was close to normal operation and the process was restarted to decrease color. There were no NPDES discharge limit color exceedances due to this event. 16 — 17 April 57,897 lbs/day 2 Day LAL— Investigation and documented corrective 2020 60,664 lbs/day action Cause(s) The MRP was down for two days, so there was an excess in pine bleach filtrate. Based on the filtrate balance, the percent closure within the pine bleach plant was affected, so the color material was sent to waste treatment. Corrective Action(s) More frequent inspections of lines for cracks, fissures, or indications of stress or wear were implemented, and the material was treated with color reduction agents prior to release to the effluent. Since no black liquor, soap, or turpentine was released, this event qualifies as non-BMP, but is included in the report to acknowledge that the 2- day lower action limit was triggered and investigated. However, there were no NPDES discharge limit color exceedances due to this event. Blue Ridge Paper Products Inc. dba Evergreen Packaging—Canton Mill 175 Main Street • PO Box 4000 Canton, North Carolina 28716 • 828-646-2000 30 Mar 2020,Page 5 Total Influent Date(s) (TI) Color Action Level and Summary 10 — 11 May 288,821 lbs/day 1-day UAL/2-day UAL— Investigation and 2020 80,979 lbs/day documented corrective action Cause(s) An electrical ground created an unexpected power outage that caused #10 recovery boiler to go offline. Due to the power outage, dilution water was added to the cyclones as a safety mechanism, causing the material to overflow. The next day, during a cyclone wash, black liquor was sent to the sewers. Corrective Action(s) Material was treated with color reduction agents, with most of the material captured in a spare clarifier/spill protection vessel during both events. More frequent scans of the conductivity meters and temperature gauges were implemented, and an investigation into the cause of the electrical ground occurred to prevent future issues. There were no NPDES discharge limit color exceedances due to this event. 1 June 2020 112,345 lbs/day 1-day UAL— Investigation and documented corrective action Cause(s) During an annual outage, the color material contained in a #10 recovery boiler sump was unintentionally diverted to the sewer, causing heightened color values. Corrective Action(s) Operations was advised to be diligent with communications of color material to the waste treatment staff. The color material was captured in a spare clarifier for further treatment prior to slowly being metered back into the system. Secondary effluent color was improved prior to discharge. There were no NPDES discharge limit color exceedances due to this event. Blue Ridge Paper Products Inc. dba Evergreen Packaging—Canton Mill 175 Main Street • PO Box 4000 Canton, North Carolina 28716 • 828-646-2000 30 Mar 2020,Page 6 Total Influent Date(s) (TI) Color Action Level and Summary 17 July 2020 83,106 lbs/day 1-day UAL— Investigation and documented corrective action Cause(s) While #10 recovery boiler was down for a cyclone wash, the boiler sump lost prime twice, allowing a large amount of wash water material from the black liquor cyclones to enter the main mill sewer. Corrective Action(s) The sump pump internal flapper was changed and the discharge check valve was cleaned to reduce the possibility of the pump losing prime again. The material was biologically treated. There were no NPDES discharge limit color exceedances due to this event. 12 — 14 177,701 lbs/day 1-day UAL/2-day UAL— Investigation and September 128,859 lbs/day documented corrective action 2020 55,837 lbs/day Cause and An unexpected power outage caused all mill systems to go offline/inoperable. The black liquor sumps, green liquor, and weak wash all over-ran to the sewer. Corrective Action(s) Color material was captured in a spare clarifier and was chemically treated prior to reintroduction to the system. Lower color material was treated with color reduction agents. There were no NPDES discharge limit color exceedances due to this event. Blue Ridge Paper Products Inc. dba Evergreen Packaging—Canton Mill 175 Main Street • PO Box 4000 Canton, North Carolina 28716 • 828-646-2000 30 Mar 2020,Page 7 Total Influent Date(s) (TI) Color Action Level and Summary 17— 18 105,121 lbs/day 1 day UAL/2-day UAL— Investigation and September 79,698 lbs/day documented corrective action 2020 Cause(s) During a planned outage, the Recovery, Utilities, and Pulp Mill departments were unable to contain all color material in the sumps. Most tanks and vessels needed to be drained prior to the extended outage. Corrective Action(s) Plans were in place to chemically treat any color releases and capture flow if necessary. The material was treated with color reduction agents and most of the high color material captured in a spare clarifier. There were no NPDES discharge limit color exceedances due to this event. 29 September 100,483 lbs/day 1-day UAL— Immediate investigation and 2020 documented corrective action Cause(s) Following a planned outage, an unplanned power outage prevented the Recovery, Utilities, and Pulp Mill departments from being able to contain all color material in the sumps. Corrective Action(s) Plans were created to mitigate color and effectively prevented color exceptions in the secondary effluent. Flow was captured and color material was chemically treated. There were no NPDES discharge limit color exceedances due to this event. Blue Ridge Paper Products Inc. dba Evergreen Packaging—Canton Mill 175 Main Street • PO Box 4000 Canton, North Carolina 28716 • 828-646-2000 30 Mar 2020,Page 8 Total Influent Date(s) (TI) Color Action Level and Summary 11 — 12 79,180 lbs/day 1 day UAL/2-day UAL— Investigation and October 2020 59,379 lbs/day documented corrective action Cause(s) Following start up from a planned Recovery outage, the black liquor sumps were unable to contain all color material. Additionally, the conductivity probe in the area was reading incorrectly. Corrective Action(s) Repairs were made to the affected areas while normal color mitigation plans were in place; maintained regular communication with the areas discharging color to the sewers, maintained the ability to chemically treat material and divert the flow of material to a spare catch clarifier for treatment. There were no NPDES discharge limit color exceedances due to this event. 9— 10 112,157 lbs/day 1 day UAL/2-day UAL— Investigation and November 62,892 lbs/day documented corrective action 2020 Cause(s) During normal operations, a power outage caused a failure of the#11 recovery boiler sump pump. During this period of inoperability, the pump became plugged and the contained black liquor overflowed to the sewers. Corrective Action(s) Repairs were made within 4.5-5 hours, however the color material remained in the primary influent system for a period exceeding 24 hours. One million gallons of material was captured in spare clarifier before additional biological treatment. There were no NPDES discharge limit color exceedances due to this event. Blue Ridge Paper Products Inc. dba Evergreen Packaging—Canton Mill 175 Main Street • PO Box 4000 Canton, North Carolina 28716 • 828-646-2000 30 Mar 2020,Page 9 Total Influent Date(s) (TI) Color Action Level and Summary 10 — 14 73,971 lbs/day 1 day UAL/2-day UAL — Investigation and December 53,102 lbs/day documented corrective action 2020 60,094 lbs/day 62,393 lbs/day Cause(s) 57,800 lbs/day During the start-up phase after a planned outage, several black liquor pumps within the hardwood pulp mill became plugged, causing liquor to be diverted to the sewer. Corrective Action(s) Waste treatment operators were notified in a timely manner, and high color material was captured in a spill containment clarifier. The sumps were cleared and repaired. During the next three days, color continued to be elevated, but was chemically and biologically treated and monitored hourly. There were no NPDES discharge limit color exceedances due to this event. Please contact us if you have questions regarding this information. Sincerely, 4,1/ Chuck Cranford Tracy Willis Environmental Manager—Waste and Water Programs Operations Supervisor/ORC -WWTP Evergreen Packaging—Canton Mill Evergreen Packaging—Canton Mill Chuck.Cranford@everpack.com Tracy.Willis@everpack.com cc: Mr. Landon Davidson DWR Regional Supervisor, Asheville Regional Office North Carolina Department of Environmental Quality 2090 U.S. Highway 70 Swannanoa,NC 28778 C. File—Wastewater Blue Ridge Paper Products Inc. dba Evergreen Packaging—Canton Mill 175 Main Street • PO Box 4000 Canton, North Carolina 28716 • 828-646-2000