Hi Steve,
Attached is the cert for 4 flow meters as follows:
· Teledyne Isco 4210 is influent flow meter
· Emco Model 4411e magmeters are DAF Flow Meters
· Emco Sono-Trak Ultrasonic no contact flow meters are the Backwash and Gravity Filter flow meters
The gravity filters and back wash flow meters are getting looked at tomorrow. We will send the cert for those once the repairs are made.
Thanks,
Jennifer Cline, P.E. | Public Works Director
Licensed in OR, WA
117 N Molalla Ave. | PO Box 248 * |Molalla, OR 97038
O: 503.759.0218 | F: 503.829.3676
From: S Major [mailto:smajor@dyerpart.com]
Sent: Monday, March 28, 2016 12:07 PM
To: Jennifer Cline <jcline@cityofmolalla.com>
Cc: R Quigley <rquigley@dyerpart.com>; Gerald Fisher (geraldf@pdgnw.com) <geraldf@pdgnw.com>
Subject: RE: Leak Test Prep Info
Jennifer,
Thanks for the update. The operating level of 9 feet will allow PDG to calculate the water surface area. The backwash flow meter is the more important of the two. We will want to include any backwash flow with influent flow. The gauge that cannot be replaced is a concern. We will come up with a different option for measurement and can discuss at our April meeting.
Steve
From: Jennifer Cline [mailto:jcline@cityofmolalla.com]
Sent: Friday, March 25, 2016 12:44 PM
To: S Major
Cc: 'Gerald Fisher'; Jason Clifford; R Quigley
Subject: Leak Test Prep Info
Hi Steve,
I was looking through my notes and realized I own you some information on preparing for the trial run of the leak test.
· After discussing with Jason, at this time the optimum operation level of the lagoons is 9-ft. This allows plenty of room and maintain temperatures to allow for the ponds to break down the solids, yet provide adequate free board for safe operation levels.
· The flow meters at the headworks, DAF #1 and DAF #2 have been verified. We are waiting to receive the reports from the company.
· The flow meters for the gravity filter and back wash pump are having issues and a field service tech will be out to look at them both on Tuesday to determine if they can be repaired or need replaced. I wasn’t sure if these two were needed for the Leak Test or not.
· The flow meter at the DMS (discharge) will be verified after the shutdown beginning May 1st.
· We will need to look at options if we want to replace the staff gauge for Lagoon #2. The current gauge is measured on an incline an doesn’t allow for it to be replaced. If the existing gauge is insufficient for the test, we can look at alternate options.
Once I receive the verification reports, I will send them your way. Please let me know if left anything out or you need anything else.
Have a good weekend!
Jennifer Cline, P.E. | Public Works Director
Licensed in OR, WA
117 N Molalla Ave. | PO Box 248 * |Molalla, OR 97038
O: 503.759.0218 | F: 503.829.3676
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2015.0.6189 / Virus Database: 4540/11785 - Release Date: 03/09/16
Internal Virus Database is out of date.