Call from Rob Ede, Hahn and Associates PM, NW Natural “Gasco” Site, December 12, 2011

Mr. Ede called to notify me of field work scheduled to begin this Friday (12/16). On behalf of NW Natural, Hahn is going to measure 4^th quarter 2011 groundwater levels in monitoring wells located on the Gasco and Siltronic sites. Mr. Ede expressed concern Hahn was providing inadequate notification as his call was less than 5-days in advance of the work. I let him know if he followed up the call with an e-mail I would consider it sufficient notification. He acknowledged.

After discussing field work notification, I informed Mr. Ede that DEQ was requesting NW Natural to collect cyanide (CN) samples for analysis at selected monitoring wells in NW Natural’s groundwater monitoring program which are located on the Siltronic property. I reminded him that per DEQ’s request, Siltronic had been collecting samples for CN analysis to assess the influence of EIB on trends, and to date had collected more than a year’s worth of data on a monthly basis.

In August 2011, Siltronic requested discontinuation of CN sampling, which DEQ approved. I let Mr. Ede know that where Siltronic was discontinuing CN sampling and analysis at those monitoring wells in NW Natural’s monitoring program, DEQ expected NW Natural to conduct the sampling. Reading from NW Natural’s 2010 Gasco/Siltronic Groundwater Monitoring Program, I indicated CN sampling and analysis should be added to monitoring wells WS-11-125/161, WS-12-125/161, WS-14-125/161, WS-21-112, WS-13-69/105, WS-16-161, and WS-17-52/84.

Mr. Ede acknowledged and let me know the next groundwater monitoring event was scheduled for February 2012 and he would be submitting a request to revise the program. The revised request would respond to DEQ’s request.

We ended the discussion with me letting him know he could call with follow-up questions regarding the telephone discussion.