HomeMy WebLinkAbout[06a] WTP #1 Filter Rehabilitation
Council Agenda Item 6a
MEETING DATE: July 17, 2017
AGENDA ITEM: WTP #1 Filter Rehabilitation
SUBMITTED BY: Terry Thene, Public Works Director
Randy Sabart, City Engineer
BOARD/COMMISSION/COMMITTEE RECOMMENDATION: N/A
PREVIOUS COUNCIL ACTION: 2017 Capital Improvement Plan Consideration
BACKGROUND INFORMATION: St. Joseph has two water treatment plants (WTP) that supply the
st
City with treated water. WTP #1 was constructed in 1970 along 1 Avenue NW and removes iron and
manganese in the water from Well Nos. 3, 4, and 5. In 1996, the original steel gravity filter was replaced.
WTP #2 was constructed on the west side of Interstate 94 in the mid-2000’s and treats water from Well
Nos. 6, 7, and 8.
From a water supply perspective, the City is fortunate to operate two WTP’s because of the redundancy
and safety factor provided. The two WTP’s treat water from separate well fields. Having such diversity in
source water and treatment is considered an asset, particularly in the event of well contamination or
treatment plant equipment failure.
In order to continue producing quality water, the 1996 steel gravity filter and other treatment equipment
within WTP #1 are in need of rehabilitation or replacement. While the scope of an early CIP estimate
considered rehabilitation of only the filter media and coating system, a more recent and comprehensive
review of the facility concluded that rehabilitation of other plant equipment/processes would be advisable.
The primary components of the plant rehabilitation project include sand blasting and recoating the filter
interior, removing and replacing filter media, replacing effluent valves, and valve actuators, and
upgrading controls and SCADA programming. The City can expect the life of WTP #1 to be extended for
approximately another 20 years following the rehabilitation.
Anticipated Schedule:
City Council Approve SEH Professional Services July 17, 2017
City Council Approve Plans and Specifications August 21, 2017
Receive Bids week of 9/11
City Council Award Bids September 18, 2017
Begin Construction October 16, 2017
Substantial Completion February 14, 2018
Final Completion March 16, 2018
BUDGET/FISCAL IMPACT: Estimated $355,840
ATTACHMENTS: Preliminary Opinion of Project Cost
REQUESTED COUNCIL ACTION: Authorize professional engineering services for the rehabilitation
of WTP #1.
Preliminary Cost Estimate
Filter Rehabilitation
Water Treatment Plant No. 1
St. Joseph, MN
5/19/2017
ItemUnitQty.Unit CostCost
Division 1 - General
MobilizationLS1$10,000$10,000
Division 9 - Coatings
Containment System/Dust Control LS1$7,500$7,500
B&P Interior SF2500$18$45,000
Division 11 - Equipment
Media RemovalCF750$10$7,500
Torpedo Sand 6"CF125$30$3,750
Filter Sand MediaCF375$30$11,250
Anthracite Coal MediaCF250$30$7,500
Installation of MediaCF750$15$11,250
New Nozzles (12" O.C)EA250$35$8,750
$16,000
Air GridsEA4$7,000$44,000
8" Effluent Valve Rehab & ActuatorEA1$3,500$3,500
8" FE Valve & Actuator (O/C)EA4$7,200$28,800
12" BW Waste Actuator (O/C)EA1$3,700$3,700
4" Recycle SystemEA1$5,000$5,000
Reclaim Pump & VFDLS1$9,000$9,000
Chlorine Injector RelocationLS1$2,500$2,500
3" Airwash Pipe InsulationLF25$11$275
8" Filter Face Pipe InsulationLF30$20$600
SCADA ProgrammingLS1$45,000$45,000
PVC Insulation Jacketing (Alt.)LF75$5$375
Division 15 - Mechanical
Air Compressor Air DryerEA1$1,000$1,000
Blower CoverEA1$1,000$1,000
$257,250
Sub-Total Construction
Contingencies$38,590
Total Construction$295,840
Engineering (Planning, Design, Bidding, Const.)$60,000
Fiscal, Legal & Administrative$25,730
Total Project$355,840