From: Ryan Hepler
Sent: Mon Aug 09 07:54:46 2021
To: Andy Peters
Cc: Water Treatment Plant Distribution List; Gerald Fisher
Subject: RE: Backwash Recycling Question
Importance: Normal
Attachments: Document_2021-08-09_073729.pdf; image001.jpg; Andy, Here is a document from the early 2000’s which talks about the City’s response to the Filter Backwash Rule. The full rule can be found at OAR 333-061-0032 (10) & 0040 (2). I was told when I started at the WTP that the City complied with this rule by no longer recycling the backwash water. There is no longer any connection from the pond to the influent pipe. They most likely stopped when they brough in the new ductile line from the intake but I would need to verify on the plans. Just some background information. I believe water systems still can recycle part of their backwash water if all the criteria are met. Ryan Hepler | Water Treatment Operator City of Molalla 117 N Molalla Ave. | PO Box 248 |Molalla, OR 97038 Office: 503.829.5408 I Fax: 503.829.3676 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: Andy Peters <apeters@cityofmolalla.com> Sent: Friday, August 6, 2021 8:14 AM To: Nusrala James B <JAMES.B.NUSRALA@dhsoha.state.or.us> Cc: Water Treatment Plant Distribution List <water@cityofmolalla.com>; Gerald Fisher <gfisher@cityofmolalla.com> Subject: Backwash Recycling Question Good Morning James, I’m working on implementing the items from our new Water Conservation Plan, and one of the things on the list (Table 11.4.1) is to look in to the status of the rules surrounding backwash water recycling. We are under the impression that no one is allowed to do this. Are you aware of any updates to these rules we may have missed that would make this allowed? Thank you! Respectfully, Andy Peters City of Molalla Public Works Operations Supervisor (503) 829-6855 x220 Cell: 503-793-0507 117 N Molalla Ave Molalla, OR 97038