From: COLLINS Jay
Sent: Fri Aug 09 17:01:25 2019
To: THIESSEN Kenneth
Cc: SPENCER Tim; OBRIEN Audrey; COLLINS Jay
Subject: RE: Cascade TSA Contained In Memo Aug 2019.docx
Importance: Normal
Hi Ken –
Looking at the results, with NDs for TCE and with TC metals below the leachate concentration thresholds, if you say these are representative for the IDW generated (above the gw table, so unlikely contaminated by the plume of TCE anyway), I think you are good to go. I don’t see any criteria to call this particular waste a hazardous waste.
DEQ Hazardous Waste prefers to let this waste go off as non-hazardous waste without further work, unless the generator or consultant says otherwise in their determination.
Thank you for checking in.
Jay
Jay Collins
Hazardous Waste Inspector
Northwest Region
Oregon DEQ
(503) 229-5008
From: THIESSEN Kenneth
Sent: Friday, August 9, 2019 4:49 PM
To: COLLINS Jay <COLLINS.Jay@deq.state.or.us>
Cc: SPENCER Tim <SPENCER.Tim@deq.state.or.us>
Subject: Cascade TSA Contained In Memo Aug 2019.docx
Please review and comment, or sign as appropriate. Thank you. Qtime 26159
Ken
Kenneth Thiessen RG,CEG
Oregon Department of Environmental Quality
Northwest Region Cleanup Program
700 NE Multnomah St., Ste. 600
Portland, Oregon 97232
(503) 229-6015