WESTERN LAKE SUPERIOR SANITARY DISTRICT 2626 Courtland Street

Duluth, Minnesota 55806-1894

Phone: (218) 722-3336

FAX: (218) 727-7471

http:\\www.wlssd.duluth.mn.us

MEMORANDUM

To: Dave Manderfeld, Ruth Janke, Paul Thomsen, Loren Lilly, Julene Boe and Archie

Chelseth

From: Amanda MacDonald

Date: June 15, 2017

Subject: Operations Committee Meeting - REVISED

The Operations Committee Meeting is scheduled on Thursday, June 15th at 11:30 a.m. in the

WLSSD Board Room at 2626 Courtland Street, Duluth, MN 55806.

The agenda for this meeting will include:

Approval of DPAM Polymer Purchase Agreement Extension Bid#1334

Project Updates

Other

Please call or email Amanda MacDonald if you plan on attending.

cc: News Media

Board Members

WESTERN LAKE SUPERIOR SANITARY DISTRICT 2626 Courtland Street

Duluth, Minnesota 55806-1894

Phone: (218) 722-3336

FAX: (218) 727-7471

http://www.wlssd.duluth.mn.us

MEMORANDUM

To: Operations Committee

From: Betsy Woller

Date: June 15, 2017

Subject: DPAM Polymer Purchase Agreement Extensions Bid#1334

Cationic polyacrylamide flocculant dry polymer (DPAM) is used for thickening of waste

activated sludge in the dissolved air flotation thickening (DAFT) process located in Building 8.

The product is ordered in “super sack” bags consisting of approximately 1500-1700 lbs. each.

The average load is 40,000 lbs and is delivered 2-3 times per year. The current price paid for

DPAM is $1.24/lb, including shipping.

In the fall of 2015, WLSSD solicited bids for DPAM. For the purposes of this bid, only pre-

approved products were accepted, unless otherwise prequalified by performing bench and

performance testing prior to the bid closing date. WLSSD conducts extensive bench testing a

minimum of every (5) years to identify the most suitable polymers. WLSSD would like to extend

the contract for the purchase and delivery of DPAM for (6) months as allowable in the respective

contracts. This would be the second and final six month extension.

Based upon the above information, we recommend that the Operations Committee approve

the recommendation to issue a (6) month extension of the Agreements between WLSSD

and Polydyne, Inc. for purchase and delivery DPAM polymer, as provisioned in our

current contracts.

Scanlon Forcemain BreakMay 22, 2017

E. Highway 61 in Esko, 277’ W. of Sorila Road

Location of Break

Facing East (downstream)

4 sticks of new pipe delivered

May 23 – 27 installation of emergency pumps and bypass piping

Furmanite Line Stopple and Flow Diversion System

• Equipment and technicians onsite on May 27th.

• Bypass installed and line stopped by 5:00 p.m.

• Site monitored over the weekend.

Stopple Installation – May 27th

Line Stopple

Bypass

Line cleaned and debris removed –May 30-31

Debris in Pipe

Equalization connection requires replacement

• To be replaced with 316 stainless steel

• All parts are available and will be installed prior to stopple removal

• Connection Plug recoated

Removal of broken pipe June 5-8th

Testing of DIP and Hobas

DIP to Hobas connection

DIP to Hobas Connection

• Circumferential break of Hobas CCFRMP pipe at MJ sleeve/DIP connection

New pipe installed

• Will be at least four new sticks of Hobas pipe installed

Joint testing – June 7-15th

• Joint test failed at one location – additional being tested now

• Additional area of deflection measured at Joint 10

• Liner removed and exposed fiberglass at 6 locations