ITEM 4.1 Design Contract for West WWTF Phase 1Ot�efF o
"o MINNESOTA V
Request for
City Council Action
ORIGINATING DEPARTMENT
REQUESTOR:
MEETING DATE:
Utilities
Utility Manager Neidermeier
October 26, 2020
PRESENTER(s)
REVIEWED BY:
ITEM #:
Schaefer and Neidermeier
City Administrator/Finance Director Flaherty
AE2S Engineer Schaefer
4.1
STRATEGIC VISION
MEETS:
THE CITY OF OTSEGO:
Is a strong organization that is committed to leading the community through innovative
communication.
X
Has proactively expanded infrastructure to responsibly provide core services.
Is committed to delivery of quality emergency service responsive to community needs and
expectations in a cost-effective manner.
Is a social community with diverse housing, service options, and employment opportunities.
Is a distinctive, connected community known for its beauty and natural surroundings.
AGENDA ITEM DETAILS
RECOMMENDATION:
City Staff is recommending City Council approval of Design Contract for West WWTF Liquid Treatment
Phase 1 (Project).
ARE YOU SEEKING APPROVAL OF A CONTRACT?
IS A PUBLIC HEARING REQUIRED?
Yes
No
BACKGROUND/JUSTIFICATION:
Residential development continues throughout Otsego and specifically within the West Wastewater
Treatment Facility service area. As of mid -October 2020, the West WWTF included 3,091 platted and 2,676
permitted RECs. The West WWTF expansion initiation trigger was 2,402 RECs with a goal of being
operational at or before 3,302 RECs considering the current treatment capacity of 3,428 RECs.
The project is anticipated to require over a year of design and two construction seasons with targeted
operational completion at the end of 2023. This target schedule for operational completion accommodates
an average of 209 RECs/year over the next three years. For context, the West WWTF service area added
245 platted RECs in 2020 through mid -October.
The project scope, associated design and bidding phase professional services scope/fee were discussed at
the September and October meetings of the Public Works Subcommittee.
The project scope generally includes the improvements of the "West Liquids Phase 1(WL1)" project
described in the Otsego Wastewater Master Plan (February 2018). The master plan conceptual plan will be
further developed and refined through preliminary design and drawings and specifications will be prepared
as part of final design phase services. Additionally, the administration building previously identified in the
"West Liquids Phase 2 (WL2)" project is included in this current scope. The project is anticipated to include
the following components:
• Lift Station No. 3 Upgrade / Capacity Expansion:
• Existing Preliminary Treatment Building Capacity Expansion
• New Fine Screening Building
• Odor Control
• New Membrane Bio-Reactor Tanks and Building (core capacity expansion)
• UV Disinfection Capacity Expansion
• New Effluent Aeration System
• Reuse Water System
• Civil/Site/Stormwater improvements
• Related electrical, controls, structural, HVAC, and plumbing
• Administration Building, Shop, Garage Space
o Needs analysis and corresponding water/wastewater staffing plan through 2030
• Miscellaneous Related Tasks
o Wastewater flow/load/phasing confirmation
o Discharge permit negotiation
o Funding coordination
o West WWTF Biosolids Alternatives review for future construction impacts to site layout
(unloading pipeline / west driveway / independent option)
o TWAS hauling —contact vs self -perform analysis
• 30%/60%/90%/Final Design Milestones and Bidding
The City Attorney is in the process of reviewing the contract terms and conditions. City Council approval
will be contingent upon his final review and recommendation to execute the contract.
SUPPORTING DOCUMENTS ATTACHED:
• Scope of Services
POSSIBLE MOTION
PLEASE WORD MOTION AS YOU WOULD LIKE IT TO APPEAR IN THE MINUTES:
Motion to approve Design Contract for West WWTF Liquid Treatment Phase 1 (Project) in the amount of
$2,291,000 contingent upon the City Attorney's final review and recommendation to execute the contract.
BUDGET INFORMATION
FUNDING: BUDGETED:
Fund 602 — Sanitary Sewer Utility Yes
City of Otsego - West Liquids Phase I Project
Preliminary Design, Final Design, and Bidding Scope of Services
October 15, 2020 (DRAFT)
Introduction:
The project scope generally includes the improvements of the "West
described in the Otsego Wastewater Master Plan (February 2018) of
capacity of 1.75 MGD (currently 0.66 MGD). The master plan conce,p,t"u
11
al
and refined through preliminary design and drawings and specificafiidn!
design phase services. Additionally, the administration bulldirevious
Phase 2 (WL2)" project is included in this current scope ,The'p''roject is an
i lji
components:
• Lift Station No. 3 Upgrade / Capacity Expansioh; �" y,
o New Submersible Pumps.
o New Electrical and Contnojs,;,
• Existing Preliminary Treatment BI�i�rig'(P�TB).,
o New Coarse Screening Equip' ent � "'"h Ih
o New Vortex Grit Unit, Pump, acid Classifietly(jet'
o Note that the 4 ' e reis'potential for t
I he1' PTB fiurtctior
o
insteadof,Plhase 2 asl�previously plad
,l IIj' �I,
• New Fine Screen9r)g Buildrng:�j L<
o 2 mm Fine Screens antl;Conuev,ance eduibment
Eva te'the, poter'itl�lrfor a Jet -Vac'
for external septic / haol�d waste)
• Ncondary Biological,Treatmerjtl
14
o '' A'rtaerobic Zone4" I
' J li
o Anoxic Zone ),
_iquids Phase 1 (WL1)" project
n.
an average wet weather flow
I plan will be further developed
will be prepared as part of final
�,q,e,ntifiecl in the "West Liquids
'c patecl to include the following
Natering of screenings)
to be consolidated in Phase 1
loading area (internal city use only, not intended
o
Aeration Zonq lr �; j,r'
,, ,
o
Post Anb' icILo11'e
o
MBR Tanks
o
Enhanced Nutrient Removal Recycle
• New MBR Equipment Building:
o
Mixed Liquor Recycle and Waste Sludge Pumping
o
Permeate Pumping
o
MBR Blowers
o
MBR Backpulse System
o
Secondary Treatment Aeration Blowers
DRAFT: Otsego West Liquids Phase I Design and Bidding Phase Services
•
o Chemical Addition Systems
o Membrane Cleaning Systems
o Air Compressor System
UV Disinfection:
o New UV Equipment in Existing Building
New Effluent Aeration Tank and Building:
o Effluent Aeration Tank and Diffusers
o Effluent Aeration Blowers
o Note that existing oxidation ditch tank(s) will be eval
tanks and effluent aeration blowers may be located �l
Reuse Water System
o Booster pumping system
o Disinfectant residual feed
o Piping systems
Electrical Improvements
o Power Feed Capacity
o Emergency Power 'I '�l` i P,�i�'
o Solar (evaluation only, io.', bgr,,ate provision fo�rhfut,
Controls
o System architecture for n
Site improvements
o Civil ° ' ' I,,+ , ' °il
,for use as effluent aeration
MBR building
re/separate solar installation)
awn or Native Grass Mix)
site layout considerations; driveway evaluation
it is to rri�Ab1', hey e"diision regarding the driveway vs pipeline;
"er,would be co�lnstructed with this project, but the site layout will
P, �1 ,
�Hfig,04red based upon the decision
rminE't,Iiming/trigger for initiating west driveway/pipeline (assumes
based trigger)
of (Automated Gate)
o Stormwaterilrrl'p'rovements
■ Go"all''of obtaining/ maintaining "no exposure" designation
o Electrical
o Gas
Related electrical, controls, structural, HVAC, and plumbing
WL2, non -process portion
o Administration Building
■ Offices, workstations, computers
■ Lunchroom area
DRAFT: Otsego West Liquids Phase I Design and Bidding Phase Services
■ Training room
■ Lockers
to Shop
■ Evaluate location / co -location within other buildings (i.e. within MBR Process
Building)
■ Size/need
o Garage Space
IN Vehicle parking for a tanker truck plus additional trucks and equipment
(assumed to be the same or larger than the East, WWTF general purpose garage)
o Needs analysis and corresponding staffing phasing,(20'y,ear level vs buildout)
■ Scope currently assumes build -out
Annualized combined Water and WasteW "ier Ukilities Staffing Plan through
�° d
2030 "
o Note: existing Control Building open spd, ill be further "fiH16' 6,! with additional
Ill
controls and electrical gearJi i," .
Scope of Services:
Preliminary Design t,
• NPDES Permitting (assumes salty discharge
environmental assessmlent workshe'.0Ifor W
• Funding Coordinatio 111i(State Revolvin'j)"funo
• Review Influept Mows anc) Loads (2020 LiffS
confirm/coordinate design 0,rjget capacitiy �" �I
• Lift Station No. 3 Capacity An �tlXsi 4
• BiosQlids,Ht andling Ap�ro�c� (fufiure�sife»Cori
m a t »
�o� +Westi WWTF Independent biosolids,i(
Ma
ster Plan(eve) alternative
n)
bmittal and associated
Plan Coordination) to
'ideration)
ption
for independent dewatering and lime
stapmzavon
■ Cto mlpar,e to cutr'erit,infrastructure basis with Biosolids Building
ntrance RoadrANlternative's Evaluation (New Road vs Remote TWAS Pumping/Fill
tation)
o Evaluate and recommend approach for hauling of TWAS (contract vs self-
perfored),ya'$Well as tanker size and phasing
to Evaluatetnear term TWAS loadout approach (i.e. indoor TWAS tanker loading
• Administration, SHiip and Garage Phasing and Needs Analysis, Planning, and Preliminary
Design
o Water/Wastewater Staffing Plan through 2030
• Preliminary Treatment Phasing/Redundancy Considerations
• Odor Control Evaluation (Biofliter vs GAC)
• Secondary Biological Treatment Train Sizing Evaluation
• MBR Equipment Pre -Procurement
to Two site visits to MBR facilities
• Preliminary Design Review Workshop
DRAFT: Otsego West Liquids Phase I Design and Bidding Phase Services
o Design Review
o Preliminary Opinion of Probable Cost
• Documentation
0 30-percent Design Deliverables
■ Basis of Design
■ Unit Process and Equipment Sizing
■ Process and Instrumentation Diagrams
■ Conceptual Site and Building Layouts
o Subcommittee Presentation
■ Biosolids Option
■ Preliminary Design l�'�;""
Final Design
• 60-percent and 90-percent design review worksho s
o Design Review (can use 3D facility models)
o Updated Opinions of Probable Cost
+�.
• 'J MPCA Coordination r + " ,
• B3 Requirements il
• Documentation i „i
Ihf
0 60-percent Design Deliverables (drawQs,,gnd sp4e fications)
0 90-percent Design Dehve�,ables (drawings"aod specifications)
o Final Design DeliverablesIl(cle6wi,ngs and spedifibat�ons)
o Subcommittee Presentation s (two hssumed) t° If ' ,
o Council Presentation ��'Ij �� ' !"'i ji'!i
o Ali i�
Bidding�
w
• Distribution of'EYectronic Bid.Documentsl4'i'J�
• Advertisement of,Bidding on`�;�ity Websit� nd AE2S' QuestCDN
• Issue Addenda
i Me
iu r. I I I
• Schedule and Lead P'r.����4��ettng+, ll
(I 11 lI u I 1 I
• ttend i� Opgn�ng l
• I'Prepare Award Recommendation
Iti ��.;,1
• DounciI Presentation"o, Award Recommendation
Construction''IaN'lPost-Construction Phases
• Reserve'cj for future useI
Project Basis and Assumptions:
• Geotechnical investigation will be coordinated by AE2S but conducted by others.
• Updated site survey will be coordinated by AE2S but conducted by others (City Engineer).
• Project delivery method will be traditional design -bid -build.
• Project will require NPDES permit modification and environmental assessment worksheet (EAW)
for liquid treatment capacity increase. Salty discharge / chloride permit variance application is
assumed. EAW "inside the fence" is assumed, i.e. entrance road not part of the current
construction phase.
DRAFT: Otsego West Liquids Phase I Design and Bidding Phase Services
• New buildings will be designed in Revit (3D). Retrofit buildings will be in either 2D CAD or Revit
depending on the extent of modifications.
• Project will trigger B3 requirements (aggregate building square footage over 10,000 sf)
• No expansion of laboratory facilities
Project Schedule:
The following is a projected project schedule:
•
Scope Negotiations
August/Sept/Oct 2020
•
Contract/Notice to Proceed
November 2020
•
Preliminary Design
January -June 2021
•
MBR Pre -Procurement
April 2021
•
60% Design
July -November 2021
•
90% Design
ljr
November 2021bruary 20
•
Final Design
March -April 20z,
•
Bidding
May 2022 3,1' �
•
Construction Initiation
June 2022
•
Substantial Completion
November 203�
•
Final Completion
December 2023
Note: Schedule assumes that meetings/W6tKsho0s will be virtual, asvneeded, due to ongoing COVID-19
guidance and requirements but that COVID,19 has' 6i qfl r}al impact orb e overall design schedule.
Professional Services Freres
V7
PreliminaryDesj n;"y ;� , , ,,, ,T $584,000
F'j,n,al Design'.; , ,;;;, u i 19
ii, + ' $1,507,000
B34";i;,111
$91,000
Bidding";, ' ,� ,,
$109,000
CA/RPR, P,9 ,t-Consti'uctibp
Reserved for Future
Total ' . , ,, " �
$2,291,000
DRAFT: Otsego West Liquids Phase I Design and Bidding Phase Services