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Backus, Garrett [EHD] From: Feliciano, Tony <Tony.Feliciano@kuraray.com > Sent: Tuesday, December 1, 2020 11:40 AM To: Backus, Garrett [EHD] Cc: Muro, Claudia [EHD]; Daubman, Jason; Buckerfield, Bruce Subject: Re: Calgon Carbon Corporation (Stockton warehouse) NtA response - hazardous waste determination Attachments: 6152N 2018 Testing.pdf; Stockton 4807N 2020 Testing.pdf; Stockton 6018N 2018 Testing.pdf; Stockton 6500N 2017 Testing.pdf; Stockton 6635N 2018 Testing.pdf; DS106N manifests.docx; wastewater manifests.docx; DS106N 2020 Testing.pdf CAUTION: This email is originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Good afternoon, Garrett. Please see below our responses to the information you have requested. Also find attached the supporting documentation. Please let me know if you have received this, as it is a big file. And also, please let me know if you have any further questions. Thank you For spent carbon that passes through the Stockton facility and sent to one of the reactivation plants such as Gila Bend, AZ; please provide the hazardous waste determination information for the last loads coming from five different source companies. We need to know if the spent carbon is hazardous waste when it's stored at the Stockton facility. We also need to know what type of waste water is being treated at the five source companies. Please see attached. We identify and track spent carbon streams by Carbon Acceptance Numbers (CANs). Below are the 5 CANs we have provided and the water being treated with each. Please keep in mind these were the last 5 shipments at the time of the request. The facility received spent carbon daily, and so this list may vary daily, but they are typical. All CANs go through our review process, which includes analysis of samples they send to us. The verifications of the original hazardous waste determination were last done as of the dates of the analytical attached. We do not conduct a separate waste determination with every load received. 4807N —final treatment of potable water 6018N — groundwater for potable water use 6500N — groundwater treatment. Non-CERCLA 6635N —Surface water for removing trace organics. 6152N — groundwater for potable water use For residual water sent to EBMUD or other disposal facilities; provide transport manifests for the last five loads and the corresponding hazardous waste determination for each one. Please see attached waste manifests for wastewater. The hazardous waste determination was made at the time of setting up the profile with EBMUD, through the analysis which was sent in the previous response to this NTA. As we have conducted hazardous waste determinations on all spent carbon's that may have contacted the water that has been shipped, we consider that adequate generator knowledge for determining the water to be non-hazardous, in concert with the analysis used for the profile. 1