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From: Bob Dillard
Sent: Fri Dec 21 14:39:54 2018
To: Andy Peters
Cc: 'S Major'; 'R Quigley'; Jake Ehredt; Gerald Fisher
Subject: RE: Ammonia
Importance: Normal
Attachments: image001.jpg; Andy, My will company also handles bioaugmentation through Spartan Chemical. I have some research I can talk to you about. I met with Biolynceus. On the north bend plant and I might have some information for you. (It might save you a lot of money. You can send me the DMR’s and I can review them and put the data together if you like. Sincerely, Bob Dillard 2470 Ash St. North Bend Or. 97459 541-290-9908 From: Andy Peters <apeters@cityofmolalla.com> Sent: Friday, December 21, 2018 2:18 PM To: Bob Dillard <b.dillard@charter.net> Cc: 'S Major' <smajor@dyerpart.com>; 'R Quigley' <rquigley@dyerpart.com>; Jake Ehredt <jehredt@cityofmolalla.com>; Gerald Fisher <gfisher@cityofmolalla.com> Subject: RE: Ammonia Bob thanks for getting back to me! I will start assembling this information next week. I’m am completely burnt and not sure I’ve got what it takes to go through last years’ DMRS just now! I’m also talking to Biolynceus about nitrifying bac-t options, so I’ll gather what they give me next week too. Thanks! Andy Peters City of Molalla Public Works Operations Supervisor (503) 829-6855 x220 Cell: 503-793-0507 117 N Molalla Ave Molalla, OR 97038 From: Bob Dillard <b.dillard@charter.net> Sent: Friday, December 21, 2018 1:54 PM To: Andy Peters <apeters@cityofmolalla.com> Cc: 'S Major' <smajor@dyerpart.com>; 'R Quigley' <rquigley@dyerpart.com>; Jake Ehredt <jehredt@cityofmolalla.com> Subject: RE: Ammonia Andy, Could give me your ammonia readings for the last year? Along with the following information if you have it.
Lagoons usually nitrify in the summer due to nitrifying bacteria available, warm water temperatures >70 F. and long detention times. The nitrifiers will usually stay in the system unless inhibited. Are your ammonias matching up with the outside lab? The ammonia probe can fail or become fouled? It will be a challenge to get the system to nitrify during the cooler temperatures and higher flows. Sometimes one can not discharge to allow some growth in the bacteria. I doubt you have this option.
Even though your permit has limits set for ammonia it does not dictate sampling. I would think DEQ would give a lot of lenience in this matter. If you don’t won’t to clarify with DEQ we can review the information you provide and identify what might have caused the problem and look for other solutions that may include the following;
We can also evaluate what actual benefit you’re getting from the aeration basin.
I hope you have a great holiday! Merry Christmas.
Bob Dillard
2470 Ash St.
North Bend Or. 97459
541-290-9908
From: Andy Peters <apeters@cityofmolalla.com>
Sent: Thursday, December 6, 2018 2:31 PM
To: Bob Dillard <b.dillard@charter.net>
Cc: Gerald Fisher <gfisher@cityofmolalla.com>; Jake Ehredt <jehredt@cityofmolalla.com>; James Clifton <jclifton@cityofmolalla.com>
Subject: Ammonia
Bob, we are running into Ammonia issues this month. Ever test we’ve done is coming in over the daily limit. We’ve sent a split sample in to Edge Laboratories, but the test is not rocket science, and our equipment was just calibrated. We have two questions (copying Ryan Q for help).
Thanks,
Andy Peters
City of Molalla
Public Works Operations Supervisor
(503) 829-6855 x220
Cell: 503-793-0507
117 N Molalla Ave
Molalla, OR 97038
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