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Home My WebLink AboutDEQ-CFW_00021303From: Cu|pepper,UndaUinda.cu|pepper@ncdenr.gov Sent: 6/20/20171253:27PyW To: Johnson, Chris Dh=ExchangeLabs/ou=ExchanXeAdministrative Group (FYD|BOHFI]3PDLT)/cn=Kecipients/cn=1476893fa8749dIba]e8IOeI4e8cee2+cjohnsonIN Subject: Re: ROtreatment and sampling atChemours Specifics like timing for test results, detection limits, constituents able to be analyzed and number ofsamples they can accommodate, etc. Those are the types of initial questions. Sent from my iPhone I will initiate contact with the ORD lab and pass along any info received. [hhs]ohnson WCDEQ'DVVR Water Sciences Section Corres.jondence with this erna.i! address is suNect to the Norffi Caro�ina Public Records Law and may be disdosed to third parties. From: Culpepper, Linda Sent: Monday, June 19,ZO17ll:OSPK4 To: Grryb,Julie ; Johnson, Chris Cc: Holman, Sheila Zimmerman, Poupart,]eff Subject: RE: ROtreatment and sampling at[hemours Michael Johnson has shared that on Thursday Chemours implement the process change (closing the vents) as discussed with Jim Gregson after the public meeting as a means to reduce the discharge of GenX. Heindicated they think that sofar itseems tohave worked and the water testing this week will help confirm if concentrations in the wastewater has decreased as [hemuuo thinks it would to work towards the remaining 20% reduction. We're are continuing toconsider additional sampling concepts. \Nealso need tounderstand what analysis capacity EPA ORDcan provide. Chris Johnson atthe D\NRlab will becoordinating with EPA ORDfor us. Definitely need your help in designing further sampling plans. Unda Culpepper Deputy Director Division of Water Resources North Carolina Department ofEnvironmental Quality 1611Mail Service Center Phone: 919'7079011 Fromn:Grryb Julie Sent: Monday, June 19,JOl711:18AM To: Culpepper, Linda OEQ-CFVV_00021303 Cc: Holman, Sheila Zimmerman, Jay Poupart,]eff Subject: ROtreatment and sampling atChemouo FYI- Four citizens have called and left me a message to not reissue a NPDES permit to Chemours. They were all appreciative that DWR was looking into the matter and are very concerned. When discussing the possibility ofROtreatment can you please consider discussing the following: From apermitting perspective | have afew requests: l) <!—[if!supportLists]—><!—[endif] —>[hemounshould sample each process line (all five identified in permit application) discharging tothe VV\NTP and the separate stormvvaterfrom the process areas toassess all other sources ofHFPOdimeracid. 2) If HFPO is being discharging from other areas, as Dr. Knappe isconcerned about Chemoursshould consider providing ROtreatment for all the l.ZMGD wastewaters discharged from the Wastewater treatment plant — this way everything is covered and any additional pollutants (ethers) we are concerned about will be addressed as well. 3) I realize Chemours believes most of the HFPO climer acid is coming from the vinyl ethers process — but sampling would confirm it. Treating the vinyl either process wastewaters with ROorpumping and hauling itfor incineration (-160,000 gpd) would at least alleviate immediate concerns but the Division will need to confirm it's not being discharged from other areas. Note it's possible that [hemoum cannot treat the vinyl either process wastewaters with 8O because it contains particulate matter but treating the wastewaters from the Activated Sludge plant with RO should bepossible. Thanks, Julie Julie Grzyh Supervisor NPOESComplex Permitting NC DEQ / Division of Water Resources / Water Quality Permitting New Q1A8D7G3AO office 9197079000 main office <imageOO1.png> 'oy :�� OEQ-CFVV_00021304