06.01.2009 - Koellermeier Greer Gaston
From: Dennis Koellermeier
Sent: Monday, June 01, 2009 4:28 PM
To: 'GARNER Loren'
Cc: Chris W. Breemer; Greer Gaston; SEIDEL Paul
Subject: RE: Tigard Library Focused Feasibility Study
Loren, your timing is uncanny. Chris and I have just completed a modification to the report to add some of your initial
comments related to the "north field"where we would propose to excavate the 1 foot of soil if funding can be found
and we are pursuing a grant to that end. By this e-mail I'm authorizing Chris to send the amended report to you and
then asking you to propose a few meeting dates at the Library to discuss approval of the report. Thanks
From: GARNER Loren [mailto:GARNER.Loren@deq.state.or.us]
Sent: Monday, June 01, 2009 3:25 PM
To: Dennis Koellermeier
Cc: Chris W. Breemer; Greer Gaston; SEIDEL Paul
Subject: RE: Tigard Library Focused Feasibility Study
Dennis,
I wanted to see if you may be ready to talk about the additional options we suggested during our review of the focused
FS report.
This could be done at your convenience via conference call or in person. If there is an advantage in observing the site
while we talk,we'd be glad to come to the library.
Thanks.
Loren
Loren G. Garner, P.E.
Senior Project Engineer, DEQ Northwest Region
Environmental Cleanup& Emergency Response Section
2020 SW 4th Avenue, Suite 400
Portland, OR 97201
503-229-6900
Fax 503-229-6954
From: GARNER Loren
Sent: Monday, April 13, 2009 9:52 AM
To: 'Dennis Koellermeier'
Subject: RE: Tigard Library Focused Feasibility Study
Soundsgood.
Loren
From: Dennis Koellermeier [mailto:Dennis@tigard-or.gov)
Sent: Monday, April 13, 2009 9:19 AM
To: GARNER Loren
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Cc: Chris W. Breemer; Greer Gaston; SEIDEL Paul; GILLES Bruce A
Subject: RE: Tigard Library Focused Feasibility Study
Thanks for getting back to me, I'm asking our engineering/planning staff to confirm if such an excavation/backfill/plant
plan is permittable in the floodplain area. That information will be critical in our evaluation. I'll get that info back to you
as soon as available then schedule a get together.
From: GARNER Loren [mailto:GARNER.Loren @deq.state.or.us]
Sent: Monday, April 13, 2009 9:03 AM
To: Dennis Koellermeier
Cc: Chris W. Breemer; Greer Gaston; SEIDEL Paul; GILLES Bruce A
Subject: RE: Tigard Library Focused Feasibility Study
Dennis,
Paul Seidel and I have done an initial review of the Focused FS report. The proposed remedy appears to be acceptable,
but we both have concerns about the long-term implications of going forward with only the fencing and institutional
controls option for the north field area.
The north field area seems to have been in City plans for use as an open area to be used along with the gazebo, etc. The
layout of the area seems to favor some reasonable human uses of the field, and there are reasonable solutions that
would allow for human use.
As we consider"current and reasonably likely future uses"we would like to discuss adding 2-3 more options for that
area that could be approved at the same time, then implemented in the future if/when the interest and funding are
available for future action.
Reasonable solutions in addition to the fencing and institutional controls option include:
1. The City could either currently implement, or write into the Institutional Controls that they could in the future
implement a bioaccessibility testing program, approved by DEQ. If such bioaccessibility testing demonstrated
that the bioavailable arsenic fraction was below the site-specific RBC, we could release the site for unrestricted
use.
2. The placement of a protective soil cap over the area,then revegetation with grass would also be acceptable.
This would perhaps require permitting and other demands for work in the floodplain, but would be a viable path
toward significant future use of the field.
3. Some combination of soil removal and capping would also be acceptable for broader future uses.
We suggest discussing these options, either in a conference call or a meeting. We would like to be sure that the selected
remedy has the options and flexibility to take care of the present situation, as well as options to handle future
possibilities without the need to reopen the entire review process.
I suggest we discuss these ideas this week or next week, before we make a formal response to the report. If you want to
add options, I recommend we do that sooner in the process than later.
Let me know if you have questions or would like to schedule a call/meeting.
Loren
Loren G. Garner, P.E.
Senior Project Engineer, DEQ Northwest Region
Environmental Cleanup & Emergency Response Section
2020 SW 4th Avenue, Suite 400
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Portland, OR 97201
503-229-6900
Fax 503-229-6954
From: Dennis Koellermeier [mailto:Den nis@tigard-or.gov]
Sent: Monday, April 06, 2009 9:37 AM
To: GARNER Loren
Cc: 'Chris W. Breemer'; Greer Gaston
Subject: Tigard Library Focused Feasibility Study
Hi Loren. I need to brief the Tigard City Council soon on this project and would like to time that to follow DEQ's response
to our FFS. Can you predict when that might be?
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