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Home My WebLink AboutNC0003760_Compliance Inspection_20220223United States Environmental Protection Agency E PA Washington, D.C. 20460 Water Compliance Inspection Report Form Approved. OMB No. 2040-0057 Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection 1 IN I 2 LI 3 I NC0003760 111 121 22/02/16 117 Type 18 H IIIIIIIIIII Inspector Fac Type 191 S I 20111 21IIIIII IIIIIIIIIIIIIIIIII I IIIIII P6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved 671 I 7° I3 I 711 1 72 I N I 731 1 74 71 I I 1 I I I I I I 180 l Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) E.I. DuPont Kinston Plant 4693 Hwy 11 N Grifton NC 28530 Entry Time/Date 10:OOAM 22/02/16 Permit Effective Date 17/04/01 Exit Time/Date 02:30PM 22/02/16 Permit Expiration Date 22/03/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Jeffrey Alan White/ORC/252-522-6443/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Emily A Price,4693 N C Hwy 11 N Grifton NC 28530/Plant Manager/252-559-7043/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenar Records/Reports Self -Monitoring Progran Sludge Handling DispoFacility Site Review Laboratory Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date Robert E Bullock DWR/WARO WQ/252-948-3843/ 2/23/2022 Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 31 NPDES yr/mo/day N C 0003760 111 121 22/02/16 I17 Inspection Type 18 [j (Cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Robbie Bullock and Robert Tankard (Washington Regional Office, DWR), Doug Dowden and Amir Adaryani (NPDES permitting), Brianna Young and Thom Edgerton (Stormwater), Bill Hunnakee and Mary Siedlecki (Hazardous Waste Section) met with Emily Price (Plant Manager), Alex Torres (EHS Manager), Shelby Arellano (Environmental Engineer), Jeff White (ORC), and David Suggs (Backup ORC) to discuss new NPDES and Stormwater permit. The review period for this inspection was November 2020 through December 2021. Over the review period the facility received a Notice of Violation in April 2021 for Aquatic Toxicity violation. The facility did not monitor Stormwater Outfalls 004, 005 and 006 for Mercury in June 2021. During the inspection it was discussed if the "Equalization Basins" are lined. There is a concrete barrier on the side walls of the aeration basin. DuPont's NPDES permit is set to expire on March 31, 2022. A renewal application has been submitted and the existing permit will remain effective until a new permit is issued. This permit renewal will separate Stormwater Outfalls and NPDES outfalls with each program issuing their own permit. During this inspection the six outfalls that are currently listed in the NPDES permit as well the newly proposed NPDES and Stormwater outfalls were visited. Page# 2 Permit: NC0003760 Inspection Date: 02/16/2022 Owner - Facility: E.I. DuPont Kinston Plant Inspection Type: Compliance Evaluation Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? • ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable II ❑ ❑ ❑ Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Record Keeping Are records kept and maintained as required by the permit? Is all required information readily available, complete and current? Are all records maintained for 3 years (lab. reg. required 5 years)? Are analytical results consistent with data reported on DMRs? Is the chain -of -custody complete? Dates, times and location of sampling Name of individual performing the sampling Results of analysis and calibration Dates of analysis Name of person performing analyses Transported COCs Are DMRs complete: do they include all permit parameters? Has the facility submitted its annual compliance report to users and DWQ? (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? Is the ORC visitation log available and current? Is the ORC certified at grade equal to or higher than the facility classification? Is the backup operator certified at one grade less or greater than the facility classification? Is a copy of the current NPDES permit available on site? Facility has copy of previous year's Annual Report on file for review? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Jeff White is the ORC with Randall Harrell and David Suggs as the Backup ORC's. The October DMR was reviewed for accuracy with no discrepancies found. Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new MODE application? Is the facility as described in the permit? • ❑ ❑ ❑ Page# 3 Permit: NC0003760 Inspection Date: 02/16/2022 Owner - Facility: E.I. DuPont Kinston Plant Inspection Type: Compliance Evaluation Permit Yes No NA NE # Are there any special conditions for the permit? • ❑ ❑ ❑ Is access to the plant site restricted to the general public? • ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? • ❑ ❑ ❑ Comment: The current permit is effective until March 31, 2022. A renewal application has been submitted and the existing permit will remain effective until a new permit is issued. Bar Screens Type of bar screen a.Manual b.Mechanical Are the bars adequately screening debris? Is the screen free of excessive debris? Is disposal of screening in compliance? Is the unit in good condition? Yes No NA NE • ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ • Comment: Sanitary sewer goes through a "Muffin Monster" solids grinder before the wastewater is sent to the Wastewater treatment plant. Equalization Basins Is the basin aerated? Is the basin free of bypass lines or structures to the natural environment? Is the basin free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Are audible and visual alarms operable? # Is basin size/volume adequate? Yes No NA NE ❑ • ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ▪ ❑ ❑ ❑ Comment: There are two equalization basins located at the WWTP. On the day of inspection a sump pump was pumping wastewater to the WWTP. There is an overflow pipe located in the equalization basin that discharges to the aeration basin in the event of a high level in the Equalization Basin. The "Equalization Basins" are not lined and only the side walls of the aeration basin have a concrete barrier. Aeration Basins Mode of operation Type of aeration system Yes No NA NE Surface Page# 4 Permit: NC0003760 Inspection Date: 02/16/2022 Owner - Facility: E.I. DuPont Kinston Plant Inspection Type: Compliance Evaluation Aeration Basins Yes No NA NE Is the basin free of dead spots? • ❑ ❑ ❑ Are surface aerators and mixers operational? • ❑ ❑ ❑ Are the diffusers operational? ❑ ❑ • ❑ Is the foam the proper color for the treatment process? • ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? • ❑ ❑ ❑ Is the DO level acceptable? • ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/I) • ❑ ❑ ❑ Comment: Nutrient Removal Yes No NA NE # Is total nitrogen removal required? • ❑ El ❑ # Is total phosphorous removal required? • El El El Type Biological # Is chemical feed required to sustain process? El • El El Is nutrient removal process operating properly? • El ❑ ❑ Comment: Nutrient removal is biological Secondary Clarifier Is the clarifier free of black and odorous wastewater? Is the site free of excessive buildup of solids in center well of circular clarifier? Are weirs level? Is the site free of weir blockage? Is the site free of evidence of short-circuiting? Is scum removal adequate? Is the site free of excessive floating sludge? Is the drive unit operational? Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) Comment: Pumps-RAS-WAS Are pumps in place? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ • ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • Yes No NA NE Page# 5 Permit: NC0003760 Inspection Date: 02/16/2022 Owner - Facility: E.I. DuPont Kinston Plant Inspection Type: Compliance Evaluation Pumps-RAS-WAS Are pumps operational? Are there adequate spare parts and supplies on site? Comment: Drying Beds Is there adequate drying bed space? Is the sludge distribution on drying beds appropriate? Are the drying beds free of vegetation? # Is the site free of dry sludge remaining in beds? Is the site free of stockpiled sludge? Is the filtrate from sludge drying beds returned to the front of the plant? # Is the sludge disposed of through county landfill? # Is the sludge land applied? (Vacuum filters) Is polymer mixing adequate? Comment: Sludge is taken to the landfill for disposal Flow Measurement - Effluent # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? Comment: Hach calibrated the effluent flow meter on December 9, 2021 Yes No NA NE II El El El • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ Effluent Sampling Yes No NA NE Is composite sampling flow proportional? • ❑ ❑ ❑ Is sample collected below all treatment units? • ❑ ❑ ❑ Is proper volume collected? • El El El Is the tubing clean? • El El El # Is proper temperature set for sample storage (kept at less than or equal to 6.0 • ❑ El El degrees Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type • El El El representative)? Page# 6 Permit: NC0003760 Inspection Date: 02/16/2022 Owner - Facility: E.I. DuPont Kinston Plant Inspection Type: Compliance Evaluation Effluent Sampling Yes No NA NE Comment: Outfall 001 sampler is flow proportional and the sampler temperature on the day of inspection was 3 degrees Outfall 002 sampler is on constant time and Constant volume. The sampler is iced when samples are taken Outfall 003 sampler is on constant time and constant volume. The sampler temperature on the day of inspection was 3 degrees Outfalls 004, 005 and 006 are Stormwater outfalls. Page# 7