4.11. SR 04-21-2014 City of
Elk - Request for Action
River O.
To Item Number
Mayor and City Council 4.11
Agenda Section Meeting Date Prepared by
Consent Aril 21, 2014 Justin Femrite, P.E. City Engineer
Item Description Reviewed by
Wastewater Treatment Facility Expansion Cal Portner, City Administrator
Engineering Fees Reviewed by
Action Requested
Approve,by motion, $261,800 increase in professional services by Bolton&Menk, Inc. for the
Wastewater Treatment Facility (WWTF) improvement project.
Background/Discussion
In June of 2013, Bolton&Menk,Inc.was authorized to complete design and construction administration
services for the WWTF improvements.
Their agreed upon fee of$880,050, or 7.7% of the total estimated project cost,included the design of an
option to pump raw biosolids to Great River Energy for their use.
As discussed at work session on January 21, 2014, this preferred option of sending biosolids to Great
River Energy was fully evaluated but proved unfeasible. Direction was given to design additional
improvements that will further process biosolids into a cake form at our site.
The modified project scope resulted in a professional service fee increase detailed in the attached letter
from Bolton&Menk, Inc.
Financial Impact
The increased engineering fee was accounted for and included in the revised project estimate of$15.4M
that was reviewed at work session in January. The additional fees will increase the previously approved
contract with Bolton&Menk, Inc. from$880,050 to $1,141,850 or 7.4% of the total estimated project
cost.
Attachments
■ Letter from Bolton&Menk,Inc.
P a w E A E U s r
NaA f RE]
• BO L—TON 8� M B N K , I N C®
Consulting Engineers & Surveyors
12224 NicolletAvenue • Burnsville, MN 55337
Phone (952)890-0509 • Fax(952)890-8065
www.bolton-menk.com
April 10, 2014
Mr. Justin Femrite, P.E.
City Engineer
City of Elk River
13065 Orono Parkway
Elk River, MN 55330
RE: Elk River WWTF
WWTF Improvements Project
Project No.: T21.106811
Dear Mr.Femrite:
The purpose of this letter is to detail the scope change for the wastewater treatment improvements project
and request additional engineering fees for these changes.
As you are aware,the original scope of the project included a different design for both the liquid and
biosolids portions of this project. The main liquid stream changes include repurposing the primary
clarifiers for biological phosphorous removal and utilizing an extended aeration activated sludge process
for the entire biological treatment process. These changes are similar in scope to our original design
scope and because of this we are not requesting any additional fees for the liquid stream changes.
The original biosolids scope included pumping the biosolids to Great River Energy(GRE)for use in the
GRE system. The improvements for the original scope and the costs associated with this option are
detailed below.
Original Cost Estimate and Fees for
Great River Energy Biosolids Option
Item Cost
Site Work/Site Piping $150,000
Pumps $125,000
Sludge Storage Aeration Equipment $175,000
Electrical/Controls $90,000
Total Construction Cost $540,000
Contingency $54,000
Engineering Fee per Agreement $82,045
Total Project Cost $676,045
GA\Elk River\T21106811\1_CorresVemrite ltr 10apr2014.docx
DESIGNING FOR A BETTER TOMORROW
Bolton&Menk is an equal opportunity employer
Mr. Justin Femrite, P.E.
OApril 10, 2014
Page 2
The selected option for biosolids treatment is to treat biosolids using aerobic treatment and produce a cake
product using screw presses. The existing anaerobic digesters will be redesigned as aerobic digesters and
the existing biosolids storage tanks will be converted to aerobic storage. The liquid product will be
pumped to a building housing the screw presses where the biosolids will be dewatered and the City will
land apply the cake product to their existing land application sites or landfill the cake product. The
additional costs associated with the revised biosolids option are detailed below.
Cost Estimate and Fees for Revised Biosolids Scope
Item Cost
Site Work $100,000
Site Piping $100,000
Building $615,000
Pumps/Piping $150,000
Dewatering Equipment $915,000
Sludge Batch Tank $50,000
Conveying Systems $50,000
Mechanical $200,000
Electrical $200,000
Total Construction Cost $2,380,000
Contingency $238,000
Engineering Fee $343,845
Less Engineering Fee Per Contract ($82,045)
Additional Engineering Fee $261,800
Total Project Cost $2,879,800
As shown above, the additional engineering fee is $261,800. This will cover both the design and
construction phases of the project. These additional fees have been included in previous cost estimates
for the revised scope project.
We appreciate your consideration of our request. If you have any questions regarding any of the above
please do not hesitate to give me a call.
Sincerely,
BOLTON&MENK, INC.
Seth A.Peterson, E.
Principal Engineer
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