Good info. Let me get back to you. Getting ready for Council meeting tonight.
Regards,
Gerald Fisher, P.E. | Public Works Director
City of Molalla
117 N Molalla Ave. | PO Box 248 |Molalla, OR 97038
Office: 503.829.6855 | Direct: 503.759.0218
CONFIDENTIALITY NOTICE: The information contained in this email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient and have received this communication in error, please contact the sender by reply email and destroy all copies of the original message. Thank you.
From: Mitch Jorgensen [mailto:mjj@molalla.net]
Sent: Wednesday, May 23, 2018 3:19 PM
To: 'Gerald Fisher' <gfisher@cityofmolalla.com>
Subject: RE: MRM Oil/Water separator in Truck Shop
If there was any to slip by it would be very low level because of the carbon filter it must pass through before discharge. No way to bypass it. The Landa guys back-flush this monthly as part of their routine. It’s very much like a big sand filter for a swimming pool. This is a high dollar treatment system. We spent close to $15,000.00 on all of it.
One thing I’ll tell you is the concrete pad with the drain to the system is outside on the North end of the Shop, so rain water can get into the system. MJJ
From: Gerald Fisher [mailto:gfisher@cityofmolalla.com]
Sent: Wednesday, May 23, 2018 3:12 PM
To: Mitch Jorgensen
Subject: RE: MRM Oil/Water separator in Truck Shop
Hmmm. I need to think thru this since we are potentially introducing grease, oil, and other contaminant into the sewer system and our plant may not react well to it. This swings us potentially into industrial pretreatment category. Need to talk to our internal folks on possible impacts so we do this right and don’t have issues with the WWTP or DEQ. Thanks Mitch.
Regards,
Gerald Fisher, P.E. | Public Works Director
City of Molalla
117 N Molalla Ave. | PO Box 248 |Molalla, OR 97038
Office: 503.829.6855 | Direct: 503.759.0218
CONFIDENTIALITY NOTICE: The information contained in this email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient and have received this communication in error, please contact the sender by reply email and destroy all copies of the original message. Thank you.
From: Mitch Jorgensen [mailto:mjj@molalla.net]
Sent: Wednesday, May 23, 2018 2:56 PM
To: 'Gerald Fisher' <gfisher@cityofmolalla.com>
Subject: MRM Oil/Water separator in Truck Shop
We have a separator system manufactured by Water Maze; model Alpha 1500-D along with, sumps, pumps and a carbon filter in the final process of clarifying which has been working quite well in connection with our hot water pressure wash system for our truck repair, which is outside the shop. It has been discharging to our stormwater system, but DEQ wants us to remove it for fear it could give us issues of contaminants in the storm water stream to Bear Creek.
What would it take to obtain permission to discharge this into the sanitary sewer system of Molalla?
I can tell you this system is regularly maintained monthly by Landa Northwest, who sold and installed the system. I could provide you all the details.
Mitch Jorgensen, Pres.
QCT/CCT #44362
Molalla Redi-Mix & Rock Products, Inc.
PO Box 555
Molalla, Or 97038
(503) 829-5555 x 15 office
(503) 829-5558 fax
(503) 969-3377 cell
Online at molallaredimix.com