From: Jennifer Cline
Sent: Wed Jun 24 11:45:42 2015
To: Laffitte, Dan; Fasth, Bill
Cc: Phillip Bender
Subject: RE: transfer pump capacities at AB
Importance: Normal
When there is a high level alarm, all 3 pumps are programmed to kick on at maximum capacity.
Normal operations: 2 pumps operate, with the 3rd pump as a backup. The pumps are rotated on a schedule for PM.
Jennifer Cline, P.E.
City of Molalla
Public Works Director
O: 503.759.0218
F: 503.829.3676
-----Original Message-----
From: Laffitte, Dan [mailto:dlaffitte@brwncald.com]
Sent: Wednesday, June 24, 2015 11:40 AM
To: Fasth, Bill; Jennifer Cline
Cc: Phillip Bender
Subject: RE: transfer pump capacities at AB
Bill - good summary.
Jennifer - it would be good to know if all three pumps typically operate concurrently, or if one and/or two turn on typically and the third is a backup. We need to be sure that the pumping system is capable of delivering the volume we've estimated in the time shown on the strip chart.
Thanks,
D. Laffitte
-----Original Message-----
From: Fasth, Bill
Sent: Wednesday, June 24, 2015 11:37 AM
To: Jennifer Cline
Cc: Phillip Bender; Laffitte, Dan
Subject: RE: transfer pump capacities at AB
Jennifer,
What we would like to know is how many gallons per hour (or gallons per minute) the transfer pumps can pump to lagoon 1.
I estimated in the memo that pump event #1 pumped 203,740 gal to lagoon 1. The strip chart shows that happened in a short amount of time too.
If we know the pump capacities (gpm or gph), we would like to check how long it would take to pump that many gallons, as a cross-check.
My understanding is that there are three pumps too.
Dan, please chime-in if there is additional information that you need.
Bill
-----Original Message-----
From: Jennifer Cline [mailto:jcline@cityofmolalla.com]
Sent: Wednesday, June 24, 2015 11:20 AM
To: Fasth, Bill
Cc: Phillip Bender; Laffitte, Dan
Subject: RE: transfer pump capacities at AB
I'm assuming you're looking for HP rating?
Regards,
Jennifer Cline, P.E.
City of Molalla
Public Works Director
O: 503.759.0218
F: 503.829.3676
-----Original Message-----
From: Fasth, Bill [mailto:bfasth@BrwnCald.com]
Sent: Wednesday, June 24, 2015 10:40 AM
To: 'Jennifer Cline'
Cc: Phillip Bender; Laffitte, Dan
Subject: transfer pump capacities at AB
Jennifer,
We are going through some internal QA/QC at BC regarding the memo I wrote for estimating the amount of release into Bear Creek.
One question that has come up is the capacity of the transfer pumps to pump wastewater from the AB to lagoon 1. Can you please provide that information when possible? Thanks.
Bill
Bill Fasth
6500 SW Macadam Avenue, Suite 200
Portland, Oregon 97239
bfasth@brwncald.com<mailto:bfasth@brwncald.com>
Cell 541.602.9110
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