ITEM 3I-rJE
To Honorable Mayor and City Council
BY: Ronald J. Wagner, P.E., City Engineer
CC: Lori Johnson, City Adininistrator-
Tini Luff, City Clerl
Dan Licht, City Planner
Gary Gr#oen, City Finance Director
ctor
Doss l emarrt, ParIc and Recreation tion 'I nager
DATE. March 1 , 2013
RE: Corupr,eliensiv Project Costs - Soccer Fields
more comprehensive project analysis than was provided in the 2013 CIS' was requested y Parks n
Recreation Manager Foss Demant to present to City staff and the City Council to gain authorization to
begin design of plan and specifications for the Otsego Soccer Fields project.
The project is planned to be split into several components as to have expert contractors in charge of each
element rather than have one general contractor with many subs.
Each phase of the project will have definitive time lines. Currently the 011ly issUe with the timeline is
completing a survey of the property to determine the actual amount of soil that needs to be moved. The
survey reeds to be completed while the ground is still frozen. April and May can he challenging t
survey ars open fields due to muddy conditions. The construction of project is plaimed to be split into
smaller phases:
1 Grading of the soccer fields — Early June
2) Installation of power by Wright Hei epin — Late Jure
3) Pond lining, grading of parking lots and installation of pipe from the Public Works Building to
a manhole and installation of wet well — Late June
4) Installation of street lights - July
5) Installation of well VFD and appurtenances - July
6 Installation of booster station and irrigation system - July
7) Turf establishment — August
Phase 1 - Soccer Fiala Grading
ot720 - mento - soccer fields -7 PPage I of
Currently, we are estimating $108,750 in construction costs for grading of the playfield area. This cost
estimate is still a very rough guess without completing a survey and coring for depth of existing topsoil
and will be fine-tuned during the grading design, which requires City Council approval to proceed with
Plans and Specifications.
Phase 2 - Installation of Electric Service
Wright Hennepin has provided the City with a cost estinate of $2,125 for placing a transformer to supply
power for the water system, irrigation and parking lot lighting. City staff also directed that Wright
Hennepin consider Riture power needs for lighting of the soccer fields so that the capacity would be in
place if such improvements are to be made in the future.
Phase 3 —Pipe From Well to Pond/Pond Lining/Parking Lot Grading
City staff is recommending a single contractor perform three elements of the project having an estimated
total cost for construction of $49,500 (including mobilization costs for all three components):
Installation of water pipe from the Public Works Building to the existing stormwater drainage
manhole adjacent to the salt storage shed and the installation of pipe and wet well adjacent to the
existing storm water pond, The piping and wet well is estimated to cost $20,000. This includes
removal and replacement of some asphalt from the building to the manhole adj aceta to the salt
storage shed.
Lining of the storniwater pond to retain water for storage from elevation 910 down to the bottom
at elevation 904 is estimated to cost $15,000 to construct. The cost of this project component may
change some dependent -upon which method of lining is. Our office will be researching the
effectiveness and cost of several methods including a PVC liner, bentonite clay or use of existing
stockpiled clay. Once we have researched each of these methods and the cost associated with
them a recommendation will be forwarded to the council for approval as part of the Plans and
Specifications.
Class 5 installation and grading of the parking lots is estimated to cost $14,000. The design will
incorporate the opportunity to add additional parking to the east of the north -south drive aisle as
well as pavement, curb and I gutter and storm sewer in the future. Two gates will also be installed
at the site entrance from 90" Street and north end of the parking area to control access for security
purposes.
Phase 4 — Installation of Street Lights
Street lights are proposed to be located at the entrance from 90t" Street and within the parking areas
primarily for security reasons, Wright Hennepin has provided us with a cost estimate of $13,825 for
seven light fixtures/poles of the same type installed in the parking area east of City Hall. City staff will
work with Wright Heimepin to determine if adequate lighting can be provided with fewer fixtures.
Phase 5 - Installation of Well VFD and Appurtenances
ot720 - nienio - soccer fields—TPC Page 2 of 3
The test of the existing Public Works Building well has determined there is an adequate supply of water
sand free at a 100 gpm rate but controls, transducers, floats, RPZ and a VFD need to be installed to allow
dual usage of the well. These costs are very fluid still until more design is completed but will require
cutting into the concrete floor of the Public Works Building to gain access to the control room based oil
the system designed by the architect, A rough estimate for construction is $37,500.
Phase 6 - Booster Station and Irrigation System
The construction costs of supplying and installing the entire irrigation system from the wet well next to
the pond to the soccer fields is estimated at $65,000. Plans and specifications for this phase will be
provided primarily by the selected irrigation contractor subject to review and approval by the City
Engineer.
Phase 7 — Turf Establishment
Parks and Recreation Manager Derrant has been in contact with a service professional who specializes in
athletic field turf, This turf specialist has estimated the cost for seeding and initial fertilization during the
first year to be $25,000.
Phase 8 — Engineering, Administration and Contingency
We estimate fees froin our office related to preparation of plans and specifications, surveying, and
construction oversight and completing as -built plans to be $23,300.
The project estimate included with the CIP included a 20 percent contingency some of which was to
account for engineering and administration costs that have been more specifically defined as separate line
items ill tills current estimate. Having refined the preliminary cost estimates for the project as outlined
herein., City staff has reduced the contingency to ten percent or $30,000.
sinninal-Y
The current estimate for the cost of project as outlined herein is $355,000, which is an increase of $12,700
from the amount that was presented as part of the CIP. The cost increase is due to the following:
Although the existing Public Works Building well does not require additional development to be
able to provide water to the soccer field irrigation that was included in the initial estiniate,
additional work to access the well controls and make a connection to the water system for a dual
system that both supplies the Public Works building and the irrigation system are higher than
anticipated.
Use of the specialized professional for seeding as well as consultation on the development of the
tUrf is estimated to cost $10,000.
0 Gates were added to secure the proposed parking lot adding $2,000 to the project cost.
ot720 - nienio - soccer fields—TPC Page 3 of 3
Phase I Early June Grading of the Soccer Fields
Estimated Cost
Item
Quantity
Units
Unit Cost Cost
Mobilization
1
LS
$21000.00 $2,000-00
Silt Fence '
3500
LF
$2.00 $7,000.00
Strip Topsoil
18000
CY
$2.00 $36,000-00
Grading
8500
CY
$1.50 $12,,750-00
Respread Topsoil
18000
CY
$2.75 $49..500,00
Tree Removal
1
LS
$1.,500-00 $1,500.00
$x.08,750.00
Phase 2
Late June
Installation of Power
Estimated Cost
Item
Quantity
Units
Unit Cost Cost
installation of Transformer
1
LS
$2)125-00 $2,125.00
$2,125,00
Cl 5 Parking Lot,, Pond Lining, Wet Well
Phase 3
Late June
and Piping
Estimated Cost
Item
Quantity
Units
Unit Cost Cost
Mobilization
I
LS
$2.,500-00 $2,500.00
CL 5 Parking Lot
800
TON
$15'.00 $12.,000.00
Pond Lining
500
CY
$30-00 $15,000.00
Wet Well
I
LS
$2p50O.00 $2)500.00
Piping from PW Building to MH
I
LS
$17,500.00 $17.,500-00
Gates
2
Each
$1,000.00 $20000-00
$49.,500.00
Phase 4
July
Installation of Lighting for Parking Lot
Estimated Cost
Item
Quantity
Units
Unit Cost Cost
Street Lights (7)
1
LS
$13;825.00 $13,825.00
$13,825.00
Phase 5
July
Installation of VFD and Appurtenances
Estimated Cost
Item Quantity Units Unit Cost Cost
VFD other Control Items 1 LS $37,500-00 $37j500-00
$37,500-00
Phase 6
Estimated Cost
Item
Irriagation System
Booster Station
Phase 7
Estimated Cost
Item
Seeding
Denudation - (round -Up) 2x
Turf Establishment (1st Year)
Phase 8
Estimated Cost
Item
Contingency Construction and Design
As -Built
Survey, Design, Admin. & Construction SW
Summary
Estimated Cost
Iterin
Phase 1 - Grading
Phase 2 -Electric Service
Phase 3 - Piping/Wet Well/Pond Lining
/Parking Lot
Phase 4 - Street Lights
Phase 5 - Well Controls
Phase 6 - Booster Station / Irrigation
Sfirst e rn
Phase 7 - Turf
Phase 8 - Design/ Admin/ and Contingency
CIP Amount
July
Quantity
August
Installation of Booster Station and
Irrigation System
Units Unit Cost Cost
LS $45,r000-00 $45,000,00
LS $20,0+0.0 $20,000.00
$65,000.00
Turf
Quantity Units
10 Acre
2 LS
1 LS
Unit Cost
Cost
$11250.00
$12,500.00
$1,250.00
$2,500.00
$101000.00
$10,000.00
$25,000.00
Design, Admin and Conti gency of 10%
Quantity Units Unit Cost Cost
I LS $30j000.00 $30,000.00
LS $51000.00 $50000.00
1 LS $18,300-00 $18,300.00
$53y300-00
Summer 2013 Soccer Fields
Cost
$108j750.00
$21125.00
$491500.00
$13o825.00
$37,500.00
$65,000-00
$2,5,00{x.00 $301,700.00
$53,300-00
$355,000-00
$342,F30O,OO $12,700.00 Over 33%