Free Declaration - District Court of Delaware - Delaware

Case 1:88-cv—O0263-SLR Document 315-8 Filed O9/O9/2005 Page 1 013
Exhibit

Case 1 :88-cv—OO26·3-SLR Document 315-8 Filed O9/O9/2005 Page 2 of 3 ·
tug 25 11:27:00 2000 update on Motiva study issues we discussed. on August
Date: Fri, 25 Aug 2000 11:25:48 -0400 (Eastem Daylight Time)
From! Lenwood Hall
Sender: [email protected]
Reply-To: [email protected]
Subject: update on Motiva study issues we discussed on August 22
To: [email protected]
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The status on the issues we discussed on August 22 is as follows:
l. Search for an expert to help resolve the PAH analysis issue in
amphipods (sediment toxicity test species) - I will start searching for
a qualified individual to serve this dispute resolution role. My
preference would be to hire someone from academia unless you think this I
is bias. As we discussed, I will have to hire someone if we want to get
a worthwhile opinion. I will frame the problem to the individual by
stating that the task is a court order and then present Mearrs position
f ‘ method) and our position. The individual would then state their
·t_ .~on along with their rationale, Does this approach sound
appropriate and unbias? I
2- Sediment trap studies · As stated in detail in our scope of work, we
believe that the data collected from sediment traps in shallow water
areas of the Delaware river will contain a high degree of uncertainty
because short term sedimentation rates will likely overestimate the
movement of PAH-sorbed particles to the river floor and the sediment
collected in the traps will contain resuspended unconsolidated bottom
sediment. Every expert in this area that we have talked with agrees
with the above statement. Despite our reservations and to adhere to
the court order, we will conduct the sediment trap study for 2 to 3
weeks at ~ 6 sites in the near-field and mid-field area of the effluent
canal. `
3. Dissolved, Particulate and Colloidal Phase Analysis - These -
experiments will be conducted as described in our scope of work. I will
also add a literature review componentto address the colloidal phase
importance to PAH transportland fate.
p ' ed by: Koralleen Stavish Page: I
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l n Case 1 :88-cv—OO263-SLR Document 315-8 Filed 09/09/2005 Page 3 of 3
Fri Aug 2511:27:00 2000 update on Motiva study issues we discussed on Aigtgast
4. Potential Mercury issue in the Delaware — Backgroud mercury data in
sediment collected by NOAA in the Delaware River will be reviewed to
search for spatial trends. I will also check all dischargers in the
area that are permitted for mercury. Motiva is not permitted for
mercury. I will also take a look at the mercury loading from Motiva's
001 discharge. .
5. PAH and metals data from Motiva's discharge - Concentration and
loadings data for both PAHs and metals will be updated and sent to you
within a few weeks.
I think this covers all the issues we discussed unless you can think of
any others. The PAH, gra-in size and TOC data from the 49 sites we
sampled on August 2l»23 should be available in 3 to 4 four weeks. I
will compile these data on a map or series of maps (and send them to
you ASAP) so we can make final decisions on the sample sites. Clark
will have his results within the same time frame so the long term
‘ caring sites can be selected.
Thanks for your constructive input. · _`
Lenwood
Lenwood Hail _
lh43 @umail.umd.edu
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Printed by: Koralleen Stavish Page: 2 n