NC0049867_Email_20190612

develandderk@develandnq�-Org
From Eason, Kevin <[e-mail]>
Wit Wednesday, June 12, 201912.48 PM
To: Kuser, Michael; Wicket, Michael:
Cc: Cathy Payne; Kelly Rogers <[e-mail]>
Subject-- RE: Cleveland WWrP
I've looked at the worksheets for the microscopic examination of the activated sludge and here's my comments.
1. l'm not sure where the first 2 pages of samples represent. I guessing the WAS perhaps. The stalked ciliates
usually dominate at the end of the process. The filamentous bacterial isn't something Y60 want to see as. too
much can result in bulking sludge (poor settling & turbid effluent)_ But here, its reported as "light" so that
may not be a problem.
2. As for the next two pages, it looks like that between 5-20 and S-29, the, number of the free-swimming
ciliates increased, which is good as the free: swimming ciliates work to remove free -dispersed c3Gteda. They
are like No.2 can the food chain.
3. Rotifers are also important.as they help clarify effluent. They are the first affected by toxic Bads though
which snakes their absence concerning as there may be some overall toxicity present that may be: hindering
the process.
4. Worn count is largely irrelevant as the higher food chain organism don't really contribute to the processing
or removal of organic material from the wastewater.
Because toxicity may be a concern, they may want to. perform some toxicity testing. The simplest and least expensive
is the simple repass / fail test. The WET (Whole Effluent Toxicity) is more accurate; perhaps, but represents a mach
higher level of effort and cost,- XZ4"4.
From: Kuser, Michael <[e-mail]>
Sent; Thursday, June 6, 2019 352 PM
To. Wicker, Michael BMW'[e-mail]>, Eason, Kevin_ <[e-mail]>
Cc: Cathy Payne<[e-mail]>; Kelly Rogers <deputyclerl @clevelandnc.org>
<[e-mail]>
subject: Cleveland-WWTP
Michael and: Kevin
The attached are the lab results from Paul, the plant operator,.showing.the sludge sample rni.croscopic eacaminatidn
results.
I have also asked Paul to provide DMRs frog 3 months before the punt upset in December and the Incest recent 3
months of DIVIRs to Kelly to scan and send to us.
Cathy and Kelly, I copied you on this in case Paul needs a reminder

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