8.e) Staff Report-Log House Landing-Part 4PRELIMINARY COST ESTIMATE
QUINNELL AVENUE N IMPROVEMENTS
PROJECT NO. N15.106565
FEBRUARY 2015
ESTIMATED TOTAL
NO. ITEM UNITS QTY UNIT PRICE PRICE
02015 Bolton Menk, Inc.,
All Rights Reserved PRELIMINARY COST ESTIMATE
QUINNELL AVE N:
1
MOBILIZATION
LS
1
$14,000.00
$14,000.00
2
TRAFFIC CONTROL
LS
1
$3,000.00
$3,000.00
3
REMOVE SIGN
EA
27
$50.00
$1,350.00
4
CLEARING AND GRUBBING
LS
1
$1,000.00
$1,000.00
5
SAWING BITUMINOUS PAVEMENT
LF
250
$4.00
$1,000.00
6
SAWING BITUMINOUS DRIVEWAY PAVEMENT
LF
80
$4.00
$320.00
7
RECLAIM BITUMINOUS PAVEMENT
SY
16,600
$3.00
$49,800.00
8
REMOVE BITUMINOUS DRIVEWAY PAVEMENT
SY
50
$3.00
$150.00
9
SUBGRADE PREPARATION
SY
16,600
$0.75
$12,450.00
10
STORM WATER QUALITY IMPROVEMENTS
LS
1
$20,000.00
$20,000.00
11
SUBGRADE EXCAVATION
CY
1,100
$10.00
$11,000.00
12
SELECT GRANULAR BORROW
CY
1,100
$10.00
$11,000.00
13
GEOTEXTILE FABRIC
SY
3,320
$1.00
$3,320.00
13
AGGREGATE BASE, CLASS 5
TN
2,350
$12.00
$28,200.00
14
AGGREGATE SHOULDERING, CLASS
TN
700
$18.00
$12,600.00
15
TYPE SP 12.5 NON -WEARING COURSE MIXTURE (2,B)
TN
2,900
$62.00
$179,800.00
16
BITUMINOUS MATERIAL FOR TACK COAT
GAL
1,250
$3.50
$4,375.00
17
TYPE SP 12.5 WEARING COURSE MIXTURE (2,B)
TN
1,700
$64.00
$108,800.00
18
RAILROAD CROSSING APRON
LS
1
$5,000.00
$5,000.00
19
PATCH BITUMINOUS DRIVEWAY
SY
50
$25.00
$1,250.00
20
PATCH GRAVEL DRIVEWAY
TN
110
$18.00
$1,980.00
21
STREET SWEEPER WITH OPERATOR
HR
5
$125.00
$625.00
22
4" DOUBLE SOLID LINE, YELLOW EPDXY
LF
7,100
$0.65
$4,615.00
23
SIGN PANELS, TYPE C
EA
15
$250.00
$3,750.00
TOTAL CONSTRUCTION COST QUINNELL AVE N:
$479,385.00
02015 Bolton Menk, Inc.,
All Rights Reserved PRELIMINARY COST ESTIMATE
The following are transcribed from the meeting recording but they are not official until the Board of
Managers approves the minutes at its March 11 meeting. Jim Shaver, Administrator CMSCWD
CMSCWD MOTION 1 REGARDING LOG HOUSE LANDING ON February 11, 2015
Steve Kronmiller moved to direct the Administrator to apply for a grant from SCRA, Great River Greening
or similar non-profit, to repair or replace the boat ramp at Log House Landing to minimize future
erosion. Dave DeVault seconded. Motion passed 5-0
CMSCWD MOTION 2 REGARDING LOG HOUSE LANDING ON February 11, 2015
Steve Kronmiller moved to authorize the District to fund 25% of cost of the Log House Landing
road improvements up to $85,000 conditioned on DNR grant funding for the project and District
approval of final plans and specifications of the road design. Dave DeVault seconded. Motion passed 5-
0
CMSCWD MOTION 3 REGARDING LOG HOUSE LANDING ON February 11, 2025
Steve Kronmiller moved to authorize the District to spend up to $10,000 to conduct a scientific study to
determine the actual amount of erosion and how big the solution needs to be. Furthermore the District
will withhold review and funding for the Log House Landing Road Project until the study is complete or it
is determined that the cost of the study exceeds the authorized amount. Polasik seconded. Motion
passed 3-2 with Lindberg and DeVault against.
Board members present: Kristin Tuenge, Dave DeVault, Steve Kronmiller, Tom Polasik, and Eric Lindberg
Absent: Andy Weaver
February 11,2015
To the Board:
It has come to my attention that there are many questions concerning the amount of the annual
sediment loss at the Log House project. Not only have members of the community questioned the
validity of the figures that the District has been using but both Scandia City officials and CMSCWD Board
members are asking to re-evaluate our figures and to provide a method to compute a cost to the
sediment in order to validate the District's involvement with the project. I provide the following and
believe it sufficient basis for a decision:
SEDIMENT REDUCTION CALCULATION:
I asked the Washington Conservation District engineer to provide RUSLE data to be used in the
determination of the estimated sediment loss at Log House Landing. I told him to use the same
calculators that the Minnesota Board of Water and Soil Resources developed to evaluate their projects
and grant applications. The Universal Soil Loss Equations are used world-wide in agricultural and
engineering projects. I did not provide the name of the project but told him that it required calculations
of class five gravel for these estimated lengths and slopes:
1. An 800 foot length with an 11' slope (ie. the road)
2. A 30 foot length with a 3° slope ( the landing)
3. A 40 foot length with a 25° slope (the boat ramp)
He was unable to find the soil characteristic for class 5 but he used the numbers for the gravelly soil in
the southern part of Washington County as determined by the soils map of the County. He provided the
following soil loss (ie. sediment) data:
1. 11.94tons/acre/year
2. .39tons/acre/year
3. 3.78tons/acre/year
I assumed that acreage reduction in sediment was equivalent to the impervious surface installed in
conjunction with the project and created the spreadsheets on pages 3 and 4 to figure the soil loss
(sediment) reduced in covering the erodible surface with impervious or pavement. The spreadsheets
also converts units in order to compare square foot reduction costs: 1 acre=43,560 square feet, 1 ton =
2,000 pounds. I used the following widths of surfaces: road =13 feet, landing= 158 feet, and boat
ramp= 15 feet. With this input, the soil loss (sediment) reduction is calculated to be 5.890 pounds (2.94
tons) per year. If sediment reduction is figured for the entire 1,200 foot length of the project, the
amount calculated is 8,741 (4.37 tons) pounds per year.
EVALUATION OF THE PROJECT:
Although the District brought this project to Scandia as a water quality project, there are many other
public benefits that are gained as a result of this project. In fact, the DNR's contribution of %: of the total
project cost is not based on water quality at all but rather the increased accessibility to public
Page 1 of 4 CMSCW D 2/10/2015 5:04 PM
recreational resources. Among the benefits the City receives are reduced maintenance, added public
safety, and increased amenities to and identification as an important public space and park in the City.
They receive these benefits and more with the payment of 25% of the total cost of the project. The
District has gained its desired water quality benefit for the cost of the remaining 25% of the project.
Washington County Public Works has estimated the cost of the project from $280,000 to $340,000. The
District's cost to achieve the reduction in TSS (total suspended solids or sediment) is thus a range from
$70,000 to $85,000. The details of the calculation are shown on pages 3 and 4.
Log House Landing Cost per Pound of Sediment Reduction
CMSCWD Cost of Project
800 foot length
1,200 foot length
$70,000
$11.88 per Ib. sediment
$8.00 per Ib. sediment
$85,000
$14.43 per Ib, sediment
$9.72 per Ib. sediment
The chart below is taken from Cost Efficiency and Other Factors in Urban Stormwater BMP Selection a
presentation in November, 2013 by Greg Busch of the Maryland Department of the Environment.
(Currently looking for Mn data and will bring to meeting if available) It presents the total cost of
sediment removal per pound of various BMPs overtheir expected life, from $4 per pound to $42 per
pound. As you can see, the costs computed above for sediment removal at the Log House Landing
project align well with this range of costs for various BMPs in this report. This data supports Carnelian -
Marine -St. Croix Watershed District's cost share participation with the City of Scandia for 25% of the
total project.
Pollutant Removal
C03101BMP
Page 2 of 4 CMSCW D 2/10/2015 5:04 PM
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Page 2 of 4 CMSCW D 2/10/2015 5:04 PM
Area
Length
in feet
slope
width in
feet
acres
RUSTL
Calculation
Tons
lbs/acre
/yr
total
lbs
Cost Per Lb
Removal
Total
Cost
Road
800
11'
13
0.238
75
tons/acre/ye
ar=-
11.94
23880
5701.
38
$
12
$
67,732
Land!
ng
Ing
3'
158
0.108
82
tons/acre/ye
ar=
0.39
780
84.88
$
12
$
1,008
Ramp
40
25'
15
0.013
77
tons/acre/ye
ar=
3.78
7560
104.1
3
$
12
$
1,237
Total Cost of TSS removal
5890.
39
$
69,977.7
8
Enter Cost per pound from right side of
chart below
11.88
Area
Length
in feet
slope
width in
feet
acres
RUSTL
Calculation
Tons
lbs/acre
/yr
total
lbs
Cost Per Lb
Removal
Total
Cost
Road
800
11'
13
0.238
75
tons/acre/ye
ar=
11.94
23880
5701.
38
$
14
$
82,271
Land!
ng
30
3'
158
0.108
82
tons/acre/ye
ar-
0.39
780
84.88
$
14
$
1,225
Ramp
40
25'
15
0.013
77
tans/acre/ye
ar=
3.78
7560
104.1
3
$
14
$
1,503
Total Cost of TSS removal
5890.
39
$
84,998.2
7
Enter Cost per pound from right side of
chart below
14.43
Page 3 of 4 CMSCWD 2/10/2015 5:04 PM
Area
Length
in feet
slope
width
in feet
acres
RUSTL
Calculation
Tons
lbs/acre/
yr
total
lbs
Cost Per Lb
Removal
Total
Cost
Road
1200
11°
13
0.3581
3
tons/acre/yea
r--
11.94
23880
8552.0
7
$
10
$
83,126
Landin
g
30
3°
158
0.1088
2
tons/acre/yea
r-
0.39
780
84.88
$
30
$
825
Ramp
40
25'
15
0.0137
7
tons/acre/yea
r=
3.78
1
7560
104.13
$
10
$
1,012
Total Cost of TSS removal
8741.0
7
$
84,963.2
4
Enter Cost per pound from right side of chart
below
9.72
Area
Length
in feet
slope
width in
feet
acres
RUSTL
Calculation
Tons
lbs/acre
/yr
total
lbs
Cost Per Lb
Removal
Total
Cost
Road
1200
11°
13
0.358
13
tons/acre/ye
ar=
11.94
23880
8552.
07
$
8
$
68,417
Landi
ng
30
3°
158
0.108
82
tons/acre/ye
ar-
0.39
780
84.88
$
8
$
679
Ramp
40
25°
15
0.013
77
tons/acre/ye
ar=
3.78
7560
104.1
3
$
8
$
833
Total Cost of TSS removal
8741.
07
$
69,928.6
0
Enter Cost per pound from right side of
chart below
8
Page 4 of 4 CMSCW D 2/10/2015 5:04 PM