3.10. SR 07-06-2009Elk REQUEST FOR ACTION
....,
River
To Item Number
Ci Council 3.10.*
Agenda Section Meeting Date Prepared by
Consent July 6, 2009 Gary Lore, Building Maintenance,
Su ervisor
Item Description Reviewed by
City Hall Boiler Replacement Lori ohnson, Ci Administrator
Reviewed by
Action Requested
Acceptance of bid proposal for boiler replacement project
Background/Discussion
Four of the seven boilers that provide heating for the City Hall /Utilities Building are the original boilers
from 1993. Due to the age of these boilers they are becoming a constant maintenance issue and results
from tests done on the water in the system showed poor quality, which is beginning to deteriorate seals
and cause equipment failures. New more efficient boilers will reduce gas consumption and reduce the
chance of broken water pipes in the winter months. Staff contacted three contractors to submit
proposals, of those Gravelle Plumbing & Heating, Aitkin, MN was the lowest at $25,656.00.
Financial Impact
Staff budgeted 25,000.00 for this project in the approved 2009 budget
Attachments
Copy of water analysis
Copy of proposal
Action Motion by Second by Vote
Follow Up
S:\BUILDING MAINTENANCE\Council RFA boilers.doc
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12/17/2008 Ziemicki
DATE TIME SERVICE ENGINEER
FOR: Elk River City Hall Elk River MN
NAME ADDRESS CITY STATE ZIP
ANALYSIS IN PPM
17.1 PPM = 1 GPG
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HEMICAL ANALYSIS V C9
REMARKS-RECOMMENDATIONS
Total Hardness CaC03
Calcium Hardness - CaC03 \\
Magnesium - CaC03
P Alkalinity The water in this loop is discolored and turbid.
M Alkalinity This indicates the resence of corrosion biproducts.
Chlorides
Orthophosphate Current) you all' receiving limited/no freeze protecti
Nitrite N03 This leaves your system susceptible to freeze/burst
sulfde so3 issues in the event of a loss of flow in our system.
Molybdate
Phosphate Additionally, the H in the system is low. Low pH
Hydrate off indicates corrosive conditions that could degrade
Carbonate C03 your system. I recommend draining the system and
Bicarbonate Hco, then cleanin the s stem with a flushin compound.
pH 5.9
Total Dissolved solids Once the cleaning has taken place I recommend
Freeze Point 32.0 retreatin the s stem with gl col that is ade uate
%Glycol <10 to provide the necessary freeze and burst protection.
Make u water How Fed CHEMICALS USED
RESIN SOFTENED PUMP RECOMMENDED
0'' ~> " FORMULA AMT/DAY
CITY SHOT
WELL OTHER
OTHER FEEDWATER
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U4/16/LUUB U'/:llf P"A1i ~vvvcivovc
X63~ 6.3s" i~i7
- Lavelle Plumbing c~ Heating, Inc.
223 First Avenue NW 218/927-2624
Aitkin, Minnesota 56431 Fax: 218/927-2415
March 10, 2009
City of Etk River
REVISED 4-16-09
Boiler replacement.
Scope:
- Remove 4 existing boilers
- Supply and insta114 new boilers (Slant Fin GG399HEC)
- Supply and install 4 new circ pumps (B&GPi36)
- Supply and install 4 new Draft hoods
- Supply and instatt 4 new 10" draft dampers
- Supply and install 4 new wiring harness
- Supply and install 41ow water cutoff
- Flush the heating system (Hydro-Sole 9100)
- Supply and instail new anti-freeze (Chem-frost CF -90)
- System startup
- All labor to complete the above work
Estimated cost $25,656.00
Removed Tec-Mar controller
Proposal accepted by Date
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