NC0006351_TEAMS Meeting_20201217

Strickland, Bev
From: Alan Martin <[e-mail]>
Sent: Thursday, December 17, 2020 1:22 PM
To: Mcdaniel, Robert; Coco, Nick A; Hunneke, William F; Pruitt, Rose; Scheller, Roberto;
Pitner, Andrew
Cc: Jonna Stein; Thomas Hayes; Dave Wasiela; Shawn Turner
Subject: [External] RE: Update on Venator Chemicals, Harrisburg NC
Attachments: 2020-12-17 NCDEQ Mtg Slides Venator Harrisburg .pdf
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DEQ team -
On behalf of Venator, thanks for speaking with us this morning about recent activities at the Harrisburg site. Attached is a pdf of the
slide deck we reviewed. Please forward to David Hill as I don't have his email address. Let Jonna know if you have questions and we
look forward to speaking with you soon.
Regards,
Alan Martin, P.G. (NC, SC)
Principal Consultant, Geology
ERM NC, Inc.
300 West Summit Avenue, Suite 330 1 Charlotte, NC 28203
Direct [phone] Main [phone] Mobile [phone]
[e-mail] 1 www.erm.com
ERM The business of sustainability
Read our Sustainability Report 2020 and ERM Foundation Annual Review
-----Original Appointment -----
From: Jonna Stein <[e-mail]>
Sent: Wednesday, December 9, 2020 9:18 AM
To: Jonna Stein; Thomas Hayes; Alan Martin; Dave Wasiela; Robert McDaniel ([e-mail]); Hunneke,
William F; Pruitt, Rose ([e-mail]); Roberto Scheller ([e-mail]); Andrew Pitner
([e-mail]); Shawn Turner; Nick Coco ([e-mail])
Subject: Update on Venator Chemicals, Harrisburg NC
When: Thursday, December 17, 2020 11:00 AM-12:00 PM (UTC-05:00) Eastern Time (US & Canada).
Where: Microsoft Teams Meeting
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Happy Holidays,
We just thought we give you a brief update before year end. We are working on some agenda items, but wanted to get the
date and time set.
I know this may not work for everyone but if needs be we can always do a subsequent call.
Please feel free to forward invite if I missed anyone.

Best Regards,
Jonna
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The business of sustainability© Copyright 2020 by ERM Worldwide Group Limited and/or its affiliates (‘ERM’). All Rights Reserved. No part of this work may be reproduced or transmitted in any form or by any means, without prior written permission of ERM.Status Update Venator Chemicals LLC FacilityHarrisburg, NCFacility ID: NCD 048 467 427-R2Presented to: NCDEQ DWQ & DWMPresented by: Venator/ERMDecember 2020
www.erm.comAgendaAttendees1. Introductions2. SWMU-5 Recent Activities3. Production Area Recent Activities4. SWMU-1 Recent Activities5. SWMU-1 Soil Sampling Results6. Routine Annual Sampling 7. Hexavalent Chromium8. Next Steps2Roberto Scheller Senior Environmental Specialist - DWQNick Coco Environmental Engineer - DWQAndrew Pitner Assistant Regional Supervisor - DWQRob McDaniel Hydrogeologist – HWSBill Hunneke Branch Head – HWSRose Pruitt Environmental Specialist – HWSThomas Hayes Global Environment and Legacy Leader; UKShawn Turner Site ManagerJonna Stein Site EHS ManagerAlan Martin, P.G. Project ManagerDave Wasiela, P.E. Technical AdvisorRick Tarravechia, P.G. Partner in Charge
www.erm.comTitle of Presentation (Insert > Header & Footer to edit)3(3.5 ac.)STREAMGAUGE #1STREAMGAUGE #2
www.erm.comSummary of Recent Activities – SWMU 54• Venator and ERM continue to refine SWMU-5 redevelopment design parameters for appropriate long-term operations.• Assessing cost and operability for the potential elimination of SWMU-5 lagoon and replacement with aboveground tanks• Concerns about impacts to chronic toxicity• Ability to manage stormwater surgesPlanned Approach• New on-site landfill for solids excavated from SWMU-5• Direct ongoing site wastewater to Geotubes within new landfill• Wastewater/leachate from landfill directed to refurbished SWMU-5 or aboveground tanks for continued use as part of WWT• Refurbished SWMU-5 would be lined, smaller in footprint, further from Rocky River• Anticipated design/permitting in 2021 with construction in 2021/2022 •Thoughts from NCDEQ on permitting?
www.erm.comSummary of Recent Activities – Production area 5• Design solutions for secondary containment improvements developed.• Secondary containment sealing / improvement work completed 4thQuarter 2020. A 8-12 mil thick Novoloc vinyl ester resin coating was used.
www.erm.comSummary of Recent Activities – Production area 6
www.erm.comPRODUCTION AREA MAP7
www.erm.comSummary of Recent Activities – SWMU 18• Detailed design for relining of the lagoon was completed 2ndquarter 2020.• Project execution plans were developed to determine potential alternative wastewater treatment methods / routes for the time period. • Construction work on lagoon completed 4thQuarter 2020• Soil sampling from base of lagoon during relining activities
www.erm.comSWMU-1 Base Soil Sampling Results 9Composite Sample LocationSample DepthSampling DateArsenicBariumCadmiumCalciumChromium (Total)Chromium (Trivalent)Chromium (Hexavalent)CobaltCopperMagnesiumManganeseSodiumZincArsenicBariumCadmiumChromium (Total)LeadSeleniumSilver5.8 580 3.0 NE NE 360,000 3.8 0.90 700 NE 65 NE 1,200 NE NE NE NE NE NE NE0.7 3,100 14 NE NE 23,000 0.3 4.7 630 NE 380 NE 4,700 NE NE NE NE NE NE NE3.0 47,000 200 NE NE 350,000 6.5 70 9,300 NE 5,600 NE 70,000 NE NE NE NE NE NE NENorth 0.5 - 2.5 10/8/202099.156.1 1.2 7,390 156 156 <6.312.774.9 4,760311<524 452 <0.010 <0.050 <0.0010 0.011 <0.0050 <0.010 <0.0050Middle 0.5 - 2.5 10/8/20208.5254 0.39 2,300 110 110 <6.367.732.2 2,0503,100<497 70.5 <0.010 <0.050 <0.0010 0.040 <0.0050 <0.010 <0.0050South 0.5 - 2.5 10/8/202011.285.9 0.45 6,280 39 39 <5.915.047.0 3,790707<480 483 <0.010 <0.050 <0.0010 0.010 <0.0050 <0.010 <0.0050NCDEQ Industrial/Commercial PSRGSPLP Metals (mg/L)NCDEQ Protection of Groundwater Total Metals (mg/kg)NCDEQ Residential PSRGComposite Sample LocationSample DepthSampling Date2-Butanone (MEK)Methylene ChlorideAll Other VOCsChlorideNitrateNitriteSulfate17,000 25 NE NE NE NE NE5,500,000 58,000 NE NE 25,000 1,600 NE40,000,000650,000 NE NE 370,000 23,000 NENorth0.5 - 2.5 10/8/2020 131 72.0 ND 60.1 <5.2 <5.2 <65.7Middle 0.5 - 2.5 10/8/2020 295 163 ND 55.7 18.9 <5.3 <68.4South 0.5 - 2.5 10/8/2020 217 116 ND 55.0 23.4 <5.0 <60.1NCDEQ Industrial/Commercial PSRGInorganics (mg/kg)NCDEQ Protection of Groundwater VOCs (ug/kg)NCDEQ Residential PSRGCCCC9C9C9
www.erm.comRoutine Annual Sampling – September 202010• Permit Required Samples –•11 Monitoring Wells, 3 Surface Waters & 1 Private Water Well• Voluntary Additional Samples –•20 Monitoring Wells, 4 Surface Waters• Report to be submitted to NCDEQ January 2020Sample AnalysesArsenic, Barium, Cadmium, Calcium, Chromium, Cobalt, Lead, Magnesium, Manganese, Sodium & ZincHexavalent ChromiumChlorides & NitratesTotal Dissolved SolidspH, specific conductivity, temperature, ORP, DO, Turbidity
www.erm.comRoutine Annual Sampling – September 202011Well No.Sampling DateArsenicBariumCadmiumCalciumChromiumChromium (VI)Chromium (III)CopperLeadMagnesiumManganeseSodiumZincTotal Dissolved Solids (mg/l)ChlorideNitrate as NPCE1,2,4-Trichloro-benzene10 2000 5 NE 100 NE NE 1300 15 NE NE NE NE NE NE NE 5 7010 700 2 NE 10 10 NE 1000 15 NE 50 NE 1000 500 250 10 0.7 70MW-01 09/30/2020 < 10.0 22.1 < 1.0 14,300 < 5.0 -- -- -- < 5.0 9,180 < 5.0 6,530 14.9 146 7.7 2.9 < 1.0 < 1.0 MW-02 10/01/2020 < 10.0 167 < 1.0 73,200 5.6 -- -- -- < 5.0 41,700 11.3 11,500 132 512 83.7 78.1 < 1.0 < 1.0 MW-03 09/29/2020 < 10.0 < 5.0 4.6 94,300 < 5.0 -- -- -- < 5.0 57,700 18.0 18,300 6,190 742 133 3.6 < 1.0 < 1.0 MW-04 09/29/2020 < 10.0 88.1 < 1.0 149,000 M1< 5.0 < 10 < 10 < 5.0 < 5.0 31,000 < 5.0 79,700 81.3 1,140 92.0 98.4 < 1.0 < 1.0 MW-05 09/29/2020 < 10.0 1,000 < 1.0 564,000 < 5.0 -- -- -- < 5.0 42,700 40.2 200,000 592 3,640 94.8 499 < 1.0 < 1.0 MW-06 09/29/2020 < 10.0 276 < 1.0 305,000 < 5.0 -- -- -- < 5.0 71,100 197 120,000 145 2,460 60.4 298 3.8 < 1.0 MW-07 09/30/2020 < 10.0 86.4 < 1.0 29,300 7.4 -- -- -- < 5.0 26,400 164 11,700 94.0 264 14.1 0.16 < 1.0 < 1.0 MW-08 09/30/2020 < 10.0 26.0 < 1.0 36,200 < 5.0 -- -- -- < 5.0 41,900 57.5 11,200 < 10.0 341 18.0 0.13 < 1.0 < 1.0 MW-09 09/30/2020 < 10.0 28.9 < 1.0 34,400 < 5.0 -- -- -- < 5.0 34,700 58.4 10,600 < 10.0 308 16.9 0.34 < 1.0 < 1.0 MW-10 09/30/2020 < 10.0 39.3 < 1.0 37,000 < 5.0 < 10 < 10 < 5.0 < 5.0 28,800 31.3 11,600 < 10.0 303 28.6 0.20 < 1.0 < 1.0 MW-11 09/29/2020 < 10.0 76.9 < 1.0 8,010 < 5.0 < 10 < 10 < 5.0 < 5.0 4,150 < 5.0 8,250 < 10.0 122 3.9 1.8 < 1.0 < 1.0 MW-11D 09/29/2020 < 10.0 195 < 1.0 156,000 < 5.0 < 10 < 10 < 5.0 < 5.0 1,670 < 5.0 292,000 < 10.0 1,850 305 M6 0.12 -- --MW-12 10/01/2020 46.5 1,950 532 3,130,000 5.6 5.6 < 10 ,M1 180 15.2 2,420,000 399,000 229,000 1,080,000 34,100 2,970 5,160 -- --MW-14 10/01/2020 < 10.0 514 9.9 167,000 18,900 19,700 < 500 < 5.0 < 5.0 84,300 451 40,900 19,700 1,340 336 92.2 M6 -- --MW-15 10/01/2020 < 10.0 181 22.9 739,000 37,200 39,300 < 1000 < 5.0 < 5.0 554,000 9,460 91,500 6,010 7,300 394 897 -- --MW-17 10/01/2020 < 10.0 210 < 1.0 94,400 < 5.0 < 10 < 10 < 5.0 < 5.0 84,500 614 111,000 24.1 1,000 336 26.4 -- --MW-19 09/29/2020 < 10.0 23.7 < 1.0 11,300 < 5.0 < 10 < 10 < 5.0 < 5.0 7,570 < 5.0 7,800 < 10.0 120 6.5 0.52 -- --MW-20 09/29/2020 < 10.0 118 < 1.0 50,000 718 800 < 20 < 5.0 < 5.0 28,100 < 5.0 13,600 < 10.0 445 19.5 31.9 -- --T-03 10/01/2020 34.0 100 < 1.0 18,100 28.8 28.8 < 10 ,H1 146 18.4 11,000 796 6,470 279 128 2.6 1.6 -- --T-04 10/01/2020 < 10.0 33.0 < 1.0 10,500 9.3 9.3 < 10 < 5.0 < 5.0 5,030 < 5.0 12,000 < 10.0 112 4.8 3.0 -- --T-05 09/30/2020 < 10.0 55.0 < 1.0 68,800 7,040 7,400 < 250 < 5.0 < 5.0 36,400 26.4 21,900 < 10.0 626 22.2 56.3 -- --T-06S 09/30/2020 28.3 49.8 < 1.0 24,100 < 5.0 < 10 < 10 10.4 < 5.0 10,200 6.3 6,500 54.7 145 2.0 1.1 -- --T-06D 09/30/2020 < 10.0 47.6 < 1.0 153,000 < 5.0 < 10 < 10 < 5.0 < 5.0 73,700 363 33,700 79.9 1,140 54.5 53.2 -- --T-07 09/29/2020 < 10.0 74.0 3.5 23,800 < 5.0 < 10 < 10 < 5.0 < 5.0 23,900 216 11,900 2,780 267 19.7 0.69 -- --T-08D 09/30/2020 < 10.0 258 < 1.0 47,100 < 5.0 < 10 < 10 < 5.0 < 5.0 2,400 5.2 312,000 < 10.0 1,000 434 0.94 -- --Private Well 09/28/2020 < 10.0 80.1 < 1.0 20,500 < 5.0 -- -- 16.0 < 5.0 11,100 < 5.0 13,700 23.8 169 13.6 3.9 < 1.0 < 1.0 NCDEQ-2L-WGMetals (ug/L) - EPA 6010D/SM3500 Inorganics (mg/L) VOCs (ug/L)EPA MCL THQ1.0
www.erm.comHexavalent Chromium Results – September 202012
www.erm.comHexavalent Chromium – Potential Interim Corrective Actions13• Interim Corrective Actions for Cr6+ Being Considered •Pilot Test of In Situ Chemical Reduction (ISCR) Planned 1stHalf 2021•Injection of organic or inorganic reducing agents (i.e., vegetable oil, molasses, ZVI, etc.)• Mass Flux Evaluation planned 1stHalf 2021 for Remediation Planning•Estimate of contaminant mass migration rates•Localized groundwater velocities
www.erm.comNext Steps14• Implement CrVI plume pilot testing to identify a viable remediation alternative• Finalize design parameters for Lagoon 5• Establish a clear permitting path for the refurbished Lagoon 5 system• Continuation of groundwater monitoring and assessment of the impact of the interim corrective measures that have been implemented in 2020.
www.erm.com15Questions
www.erm.com16Extra Slides
www.erm.comSWMU-5 Reconfiguration Plans17• Raise floor elevation above seasonal high water table elevations (following the detailed assessment of the groundwater behavior) • Install synthetic liner system to reduce infiltration• Consolidate pond footprint; reduce from 3.4 acres to 2.2 acres• Remove current berm and concrete wall along Rocky River• Pond exterior slope maximum 3H:1V along Rocky River• Increase buffer between SWMU-5 and Rocky River• Add sediment filtration prior to discharge to SWMU-5 • 2021/2022 construction anticipated following DEQ approval and regulatory permitting.
www.erm.comSWMU-5 Reconfiguration Plan18
www.erm.comOff-Site Disposal of SWMU-5 Sediments Option19• Develop onsite drying area utilizing Geotubes for SWMU-5 dewatering of sediments• Drying area will have a liner system and drain directly into existing SWMU-5• Temporary onsite tanks may be necessary for ongoing plant operations & dewatering• Dried sediments will be hauled offsite to an approved landfill facility• Trial demonstration projects to use dried sediments as alternate daily cover (ADC) as means to conserve landfill airspace and potential cost savings
www.erm.comOn-Site Landfill for SWMU-5 Sediments Option20• Option to develop onsite industrial landfill to serve facility long-term• Local landfills in the area have limited life spans• Permit onsite landfill with NCDEQ – Division of Waste Management• Landfill footprint of approximately 3.6 acres• Develop onsite borrow area to serve long term landfill operational and closure needs• Landfill will contain a synthetic liner system along with leachate collection system• Leachate will discharge to reconfigured lined SWMU-5• Landfill will be developed in phases to minimize active areas• Landfill will be utilized to dewater and collect sediments from existing SWMU-5• Temporary surge tanks will be needed during SWMU-5 dewatering• Landfill life expectancy of 60-years plus• Discuss permitting options with NCDEQ between agencies
www.erm.comOn-Site Landfill for SWMU-5 Sediments Option25