HomeMy WebLinkAbout05(F) - Approve Work Order for 2022-2023 Pond Maintenance Project (Pond 197) Report
K:\018387-000\Admin\Docs\Cover Letter.docx 701 XENIA AVENUE S | SUITE 300 | MINNEAPOLIS, MN | 55416 | 763.541.4800 | WSBENG.COM Memorandum
To: Pete Young, City of Prior Lake
From: Jake Newhall, PE
Laura Cummings, PE
Date: August 10, 2021
Re: 2021/2022 Pond Feasibility Analysis
City of Prior Lake
WSB Project No. 018387-000
At the request of the City, WSB & Associates, Inc. (WSB) completed a pond feasibility analysis
for the following ponds: Pond 177, Pond 178, Pond 197, Pond 233, and Pond 333. This analysis
identifies possible improvement options related to each pond.
Summary of Recommended Pond Improvement Projects
Pond Recommended
Action
Sediment
Removal
Cost*
Possible
Construction
Year
Pond 177 Excavate 1500 CY $30,300 2021/2022
Pond 178 Excavate 1200 CY $23,500 2021/2022
Pond 197 Excavate 1300 CY $26,600 2022/2023
Pond 233 Excavate 2000 CY $40,800 2023/2024
Pond 333 Excavate 1400 CY $28,600 2023/2024
*Cost estimates do not include indirect costs, contingencies,
access/restoration costs, and other appurtenant work. Costs to consider
contaminated sediments where present are included, and details are in the
attached report.
The improvements recommended for construction in 2021/2022 are estimated in detail in the
attached Preliminary Cost Estimate. The Preliminary Cost Estimate includes contingencies,
indirect costs, access/restoration costs, and other appurtenant work not included in the summary
table above.
Attachments
1. Pond Feasibility Analyses
2. Surveyed Pond Figures
3. Preliminary Cost Estimate
4. Sediment Sampling Results
POND 178 Page 1
POND 177 AND 178
1.1. Introduction
Pond 178 is located west of Eagle Creek Ave NE, and drains west int a large wetland complex,
that is a subwatershed of Pike Lake. Pond 178 drains into Pond 177.
1.2. Survey and Inspection Observations
Table 1 and Table 2 presents information gathered from the SWAMP and the field survey
completed in July 2021. Pond 177 outlet is a 21-inch flared end section outlet has large erosion
issues, and is starting to erode underneath the flared end section, see photo below. The outlet of
the pond is at a higher elevation than the current water levels of the pond are. An infiltration basin
was shown to discharge into the pond from the south. Because the drainage area to the
infiltration is small (about 1 acre), it was assumed that negligible treatment was being provided
and was not included in the water quality analysis.
The drainage area for 178 consists of roadway runoff from Eagle Creek Ave NE with some runoff
from residential areas. Pond 178 has one 27-inch invert coming from East Creek Ave NE. This
pond drains west to Pond 177 through an outlet control structure. The wood weir structure outlet
on the northeast corner of pond 178 is not functioning, causing an erosion channel that outlets
the pond. The outlet for this pond is a 30-inch flared end section that goes into an overflow control
structure that outlets to the west from a 30-inch flared end section at 887.40.
Table 1. Pond Summary
Drainage Area 21.25 acres
NWL* 889.51
Area at NWL 0.28 acres
2021 SWAMP Score 24.09
Managed NURP Ratio 1
Managed Depth 5.90 ft
Current Depth 1.42 ft
Current Wet Volume 17,320 ft3
Downstream Waterbody Wetland
Survey/Inspection Date July 2021
Surveyed Water Elevation 889.51
Outlet Elevation 892.78
Outlet Diameter 30” RCP
Inlet Diameter 24” RCP
Table 2. 178 Pond Summary
Drainage Area 11.81 acres
NWL* 889.9
Area at NWL 0.14 acres
2021 SWAMP Score 14.03
Managed NURP Ratio 1
Managed Depth 6.84 ft
Current Depth 0.96 ft
Current Wet Volume 5,855 ft3
Downstream Waterbody Wetland
Survey/Inspection Date July 2021
Surveyed Water Elevation 889.9
POND 178 Page 2
Outlet Elevation 890.89
Outlet Diameter 30” RCP
Inlet Diameter 27” RCP
*NWL based on surveyed water elevation
Major erosion underneath the outlet for the pond.
During the field survey, it was found that the pond 177 was draining to the north via channels that
have been eroded into the soil. It is possible the pipe designed to drain this pond to the north was
washed out and the current channel runs it its place. At the time of surveyance, water was flowing
in this channel, see the images below.
Channel erosion north of pond.
POND 178 Page 3
1.2.1. Sediment Sample Results
Four sediment samples were tested in Pond 177 and Pond 178. There was no level 3 sediment
found in pond 177. In Pond 178, one sample was assigned to Management Level 3 and the other
to Management Level 1, therefore increased costs for approximately half of this pond are
considered in the recommendation and cost estimates. Additional information on the sediment
analysis completed can be found in the attached Sediment Analysis Memo and Results.
1.3. Recommendation
An analysis was completed evaluating the existing and potential sediment removal options for the
maintenance of Pond 177 (Table 3), and Pond 178 (Table 4). Additional sediment should be
removed between ponds to create one large pond instead of two small ponds. This would remove
an additional XX CY and would allow for more storage within the ponds. It is recommended that
the ponds be maintained to an average depth of approximately 4.0 feet. This would also reduce
mobilization costs and restoration costs for the project.
Table 3. Water Quality Analysis Pond 177
Option Description
TP
Removal
Efficiency
(%)
Annual
TP
Reduction
(lbs/yr)
TSS
Removal
Efficiency
(%)
Annual
TSS
Removal
Efficiency
(tons/yr)
Estimated
Sediment
Removal
Cost*
Life-Cycle
TP Cost
Benefit
($/lb)
1 - Existing; Maintain
Current Depth of 1.42
ft
37.01 6.71 64 1.76 - -
2 - Excavate to an
Average Depth of 3.0
ft (926 CY)
49.76 9.02 81.00 2.23 $18,515 223.27
3 - Excavate to an
Average Depth of 4.0
ft (1,512 CY)
54.47 9.88 91.5 2.51 $30,233 375.12
4 - Excavate to an
Average Depth of 5.0
ft (2,098 CY)
57.99 10.52 93.00 2.56 $41,950 495.9
5 - Excavate to a
Managed Depth of 5.9
ft (2,625 CY)
60.49 10.97 93.00 2.56 $52,496 487.74
*Cost estimates do not include indirect costs, contingencies, access/restoration costs, and other appurtenant work.
Costs to consider contaminated sediments where present is included.
Commented [LC1]: Need to attach.
POND 178 Page 4
Table 4. Water Quality Analysis Pond 178
Option Description
TP
Removal
Efficiency
(%)
Annual
TP
Reduction
(lbs/yr)
TSS
Removal
Efficiency
(%)
Annual
TSS
Removal
Efficiency
(tons/yr)
Estimated
Sediment
Removal
Cost*
Life-Cycle
TP Cost
Benefit
($/lb)
1 - Existing; Maintain
Current Depth of 1.42
ft
28.39 4.01 55.88 1.20 - -
2 - Excavate to an
Average Depth of 2.0
ft (402 CY)
40.64 5.74 67.00 1.43 $8,047 151.05
3 - Excavate to an
Average Depth of 3.0
ft (790 CY)
47.57 6.72 76.00 1.63 $15,785 291.36
4 - Excavate to an
Average Depth of 4 ft
(1176 CY)
52.36 7.40 87.50 1.87 $23,523 393.42
5 - Excavate to a
Managed Depth of 5 ft
(1,563 CY)
55.95 7.90 93.00 1.99 $31,260 375.2
*Cost estimates do not include indirect costs, contingencies, access/restoration costs, and other appurtenant work.
Costs to consider contaminated sediments where present is included.
POND 197 Page 1
POND 197
1.1. Introduction
Pond 197 is located north and apartment complex on the norther side of Franklin Trail southeast.
It is near the northeast intersection of Franklin Trail SE and County Highway 13. The pond drains
private and right of way before discharging to a ditch in the northwest corner of the pond. The
pond is part of the upper prior lake subwatershed.
1.2. Survey and Inspection Observations
Table 1 presents information gathered from the SWAMP and the field survey completed in July
2021. Pond 197 is within a greater detention basin/wetland area that and provides pretreatment
to runoff prior to discharging to the wetland within Timber Crest Park. The outlet of the pond is a
24-inch RCP that connects to a concrete outlet structure.
1.2.1. Sediment Sample Results
Two sediment samples will be needed for Pond 197 to determine appropriate disposal methods.
Table 1. Pond Summary
Drainage Area 19.37 acres
NWL* 946.45
Area at NWL 0.27 acres
2021 SWAMP Score 10.77
Managed NURP Ratio 0.39
Managed Depth 5.85 ft
Current Depth 0.63 ft
Current Wet Volume 7,410 ft3
Downstream Waterbody Upper Prior Lake
Survey/Inspection Date July 2021
Surveyed Water Elevation 946.45
Outlet Elevation 846.75
Outlet Diameter 24” RCP
Inlet Diameter 15” 2-18” and 24” RCP
*NWL based on surveyed water elevation
1.3. Recommendation
An analysis was completed evaluating the existing and potential sediment removal options for the
maintenance of Pond 197 (Table 2). Based on the size of the current pond, it is recommended
that Pond 197 be maintained to the managed depth of 5.9 feet (Option 6, Table 2). This average
depth is consistent with the record drawing, and SWAMP would then be updated to show a
Managed Depth of 5.9 feet for Pond 197.
POND 197 Page 2
Table 2. Water Quality Analysis Pond 26-197
Option Description
TP
Removal
Efficiency
(%)
Annual
TP
Reduction
(lbs/yr)
TSS
Removal
Efficiency
(%)
Annual
TSS
Removal
Efficiency
(tons/yr)
Estimated
Sediment
Removal
Cost*
Life-Cycle
TP Cost
Benefit
($/lb)
1 - Existing; Maintain
Current Depth of 0.63
ft
15.39 3.12 31.43 0.97 - -
2 - Excavate to an
Average Depth of 2.0
ft (350 CY)
31.77 6.45 58.5 1.8 $6976 208.88
3- Excavate to an
Average Depth of 3.0
ft (603 CY)
38.59 7.83 65 2 $12,068 179.71
4- Excavate to an
Average Depth of 4.0
ft (858 CY)
43.53 8.83 69.33 2.13 $17,160 161.12
5- Excavate to an
Average Depth of 5.0
ft (1113 CY)
47.33 9.6 75 2.34 $22,252 148.49
6 - Excavate to a
Managed Depth of 5.9
ft (1330 CY)
49.96 10.14 81 2.49 $26,565.75 140.56
*Cost estimates do not include indirect costs, contingencies, access/restoration costs, and other appurtenant work.
Costs to consider contaminated sediments where present is included.
POND 233 Page 1
POND 233
1.1. Introduction
Pond 233 is located in the southwest corner of 160th street southeast and Fish Point Road SE.
The pond discharges to a wetland on the north side of Fish Point Road SE.
1.2. Survey and Inspection Observations
Table 1 presents information gathered from the SWAMP and the field survey completed in July
2021. The outlet structure was not surveyed, however the outlet is a 24-inch flared end section
that drains to a wetland on the east side of fish point road. The pond is within a city-owned parcel.
The pond drains to the wetland and downstream to Markley Lake.
Table 1. Pond Summary
Drainage Area 38.18 acres
NWL* 923.09
Area at NWL 0.73 acres
2021 SWAMP Score 10.88
Managed NURP Ratio 1.00
Managed Depth 6.43 ft
Current Depth 0.70 ft
Current Wet Volume 22,259 cf
Downstream Waterbody Markley Lake
Survey/Inspection Date July 2021
Surveyed Water Elevation 923.09
Outlet Elevation 82.63
Outlet Diameter 24” RCP
Inlet Diameter 30” RCP
*NWL based on surveyed water elevation
** Outlet elevation based on record plan
1.3. Recommendation
An analysis was completed evaluating the existing and potential sediment removal options for the
maintenance of Pond 233 (Table 2). This pond has good potential for pollutant removal due to its
large drainage area, however the managed depth of 6.43 feet is double the excavation numbers
as option 4 but only slightly increases the TP and TSS removal efficiency. It is recommended that
Option 4 in Table 2 be completed to achieve an average depth of approximately 4.0 feet.
SWAMP should then be updated to reflect this as the managed depth.
Table 2. Water Quality Analysis Pond 233
Option Description
TP
Removal
Efficiency
(%)
Annual
TP
Reduction
(lbs/yr)
TSS
Removal
Efficiency
(%)
Annual
TSS
Removal
Efficiency
(tons/yr)
Estimated
Sediment
Removal
Cost*
Life-Cycle
TP Cost
Benefit
($/lb)
1 - Existing; Maintain
Current Depth of 0.7 ft 24.98 7.44 61.25 18.24 - -
POND 233 Page 2
2 - Excavate to an
Average Depth of 2.0
ft (1,152 CY)
42.27 12.59 68.67 3.10 $23,036 97.5
3 - Excavate to an
Average Depth of 3.0
ft (2,038 CY)
49.16 14.64 81 3.65 $40,756 133.75
4 - Excavate to an
Average Depth of 4.0
ft (2,924 CY)
53.9 16.06 90 4.06 $58,476 178.46
5 - Excavate to a
Managed Depth
(NURP) of 6.43 ft
(5,080 CY)
61.25 18.24 93 4.2 $101,605 275.36
*Cost estimates do not include indirect costs, contingencies, access/restoration costs, and other appurtenant work.
Costs to consider contaminated sediments where present is included.
POND 333 Page 1
POND 333
1.1. Introduction
Pond 333 is located east of Fish Point Road SE. It is just east of Lower Prior Lake.
1.2. Survey and Inspection Observations
Table 1 presents information gathered from the SWAMP and the field survey completed in July
2021. The pond discharges into another pond to the north, and then into Lower Prior Lake. The
outlet was clogged with debris, causing the surveyed water surface to be 0.2 feet higher than the
outlet elevation. The southeast inlet is a 12-inch RCP coming from Lost Horizon Circle Southeast
and has a headwall as shown in the picture below.
Outlet of Pond 333.
POND 333 Page 2
Inlet from southeast corner of pond 333.
Table 1. Pond Summary
Drainage Area 75.92 acres
NWL* 908.09
Area at NWL 0.34 acres
2021 SWAMP Score 29.22
Managed NURP Ratio 0.53
Managed Depth 9.00 ft
Current Depth 2.63 ft
Current Wet Volume 38,951 ft3
Downstream Waterbody Lower Prior Lake
Survey/Inspection Date July 2021
Outlet Elevation 907.91
Outlet Diameter 12” PVC pipe
Inlet Diameter 18” RCP
*NWL based on surveyed water elevation
1.3. Recommendation
An analysis was completed evaluating the existing and potential sediment removal options for the
maintenance of Pond 333 (Table 2). The pond has a large drainage area which results in a large
managed NURP depth, and the pond is undersized, which is shown by the low Managed NURP
Ratio. It is recommended that the depth be increased to 5.0 feet. After construction, we
recommend updating the managed depth in SWAMP to reflect the constructed average depth.
POND 333 Page 3
Table 2. Water Quality Analysis Pond 333
Option Description
TP
Removal
Efficiency
(%)
Annual
TP
Reduction
(lbs/yr)
TSS
Removal
Efficiency
(%)
Annual
TSS
Removal
Efficiency
(tons/yr)
Estimated
Sediment
Removal
Cost*
Life-Cycle
TP Cost
Benefit
($/lb)
1 - Existing; Maintain
Current Depth of 2.63
ft
35.73 19.16 62 5.04 - -
2 - Excavate to a
Managed Depth of 4.0
ft (827 CY)
42.9 23.01 68.67 5.58 $16,529 116.25
3- Excavate to an
average depth of 5.0 ft
(1430 CY)
46.71 25.05 74 6.01 $28,594 89.66
4- Excavate to an
average depth of 6.0 ft
(2033 CY)
49.78 26.7 81 6.58 $40,659 85.6
5- Excavate to an
average depth of 7.0 ft
(2636 CY)
52.33 28.06 87.5 7.11 $52,724 86.51
6- Excavate to an
average depth of 9.0 ft
(3843 CY)
56.37 30.23 93 7.56 $76,860 121.37
*Cost estimates do not include indirect costs, contingencies, access/restoration costs, and other appurtenant work.
Costs to consider contaminated sediments where present is included.
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City Data
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Avg: 0.82 ft
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Avg: 1.25 ft
City Data
Basin Area: 0.05 ac
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Basin P155
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Avg: 1.11 ft
City Data
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Basin Area: 0.3 ac
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""""""#*CREEKSIDE CIR SEMUSHTOWN RD SEHWY 13
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Avg: 1.42 ft
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10 ft
Contours
Storm Mains
Max: 2.3 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 0.96 ft
City Data
Basin Area: 0.14 ac
"""""""""#*
!(PONDS PKWY
SE992976
978976990980988986984978 9
8
09821.2'
1.2'
1.1'
1.2'0.6'
0.9'
1.4'
1.4'
2'
1'1.5'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 30 feet
0 30
Feet2022 Pond Maintenance
City of Prior Lake
Basin P190
2 ft
10 ft
Contours
Storm Mains
Max: 2 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 0.81 ft
City Data
Basin Area: 0.11 ac
""""""""""""""
"""""""""""""#*
!(960962
962946948 954
956
94
8958
960
954
9 5 8956
950 952
0.7'0.8'
0.7'
0.4'
0.5'
1.3'
1.2'
0.6'
1.7'
2.4'
2'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 50 feet
0 50
Feet2022 Pond Maintenance
City of Prior Lake
Basin P197
2 ft
10 ft
Contours
Storm Mains
Max: 2.4 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 0.63 ft
City Data
Basin Area: 0.27 ac
"
"
""""""""""""""""""""""""""""KOP PKWY SE922950
948
946
92492494
4
932
9
4
2
922940938936934924926932926930928
0.8'
2.7'
2.6'
1.8'2.7'
2.2'2.7'
0.8'
2.7'
2'
1.6'
0.4'
1.1'
1.6'2.7'
2.5'
2.8'
2.6'
1.7'
0'
0.9'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 30 feet
0 30
Feet2022 Pond Maintenance
City of Prior Lake
Basin P204
2 ft
10 ft
Contours
Storm Mains
Max: 2.8 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 1.39 ft
City Data
Basin Area: 0.07 ac
""""""""""""""
"
"
"
"
#*
#*
")
")
")
")
")#*
#*
#*
#*
#*BEACH ST NE
926902900944
902942
904940
906908938
910936
904928
934
930
932
906908926
910924
9169189 2 0
9149229122.3'
1.9'2'
2.7'
1.8'
2.9'3.3'
3'
2.7'
1.5'
0.7'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps - updated Date Saved: 8/4/2021¯
1 inch = 50 feet
0 50
Feet2022 Pond Maintenance
City of Prior Lake
Basin P207
2 ft
10 ft
Contours
Storm Mains
Max: 3.3 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 1.72 ft
City Data
Basin Area: 0.14 ac
Water surface was surveyed at
899.69', NWL was taken to be
900.368' based on basin outlet
"""""""""""""""""""
"""""
"""
"
"""""""#*
#*
160 ST SE
C
R
O
S
S
A
N
D
R
A
S
T
S
E
160 ST SE
WREN CT SEFISH POINT RD SEFISH POINT RD SEFISH POINT RD SE93 8
9
3
0
934 936934952
940
9389309329329349 3 4
950
956
954
952
938
948
950
946 944 942
924940
926938
9289369369309349320.6'
0.6'0.6'
1.4'
2.5'1.3'1.4'
2.2'1.7'
2.4'
0.9'
0.9'
0.4'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 80 feet
0 80
Feet2022 Pond Maintenance
City of Prior Lake
Basin P233
2 ft
10 ft
Contours
Storm Mains
Max: 2.5 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 0.7 ft
City Data
Basin Area: 0.73 ac
#*
#*99610049921022101
2
10161002994102010021018
1 0 0 0 998101610141014101210121002 1004100610001008101
02.2'
2'
0.9'
1.7'
3.1'
2.9'
2.1'
1.1'
1'
1.3'
6.9'
7.9'
8.8'
7.2'
7.6'
9.9'10.4'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 50 feet
0 50
Feet2022 Pond Maintenance
City of Prior Lake
Basin P255
2 ft
10 ft
Contours
Storm Mains
Max: 10.4 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 3.44 ft
City Data
Basin Area: 0.33 ac
"""""""""
"
"
"""#*
!(
!(
#*
WATER
S
E
D
G
E
T
R
L
N
E
BO
U
D
I
N
S
T
N
E
9 0 2908904
910906 908908902 902904 9089 049062.3'
2.1'
1.2'
1.1'
1.3'2.7'
2'
1.7'
1.8'6.4'
5.3'
5.8'
7.3'
7.4'
7.3'
7.3'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 50 feet
0 50
Feet2022 Pond Maintenance
City of Prior Lake
Basin P259
2 ft
10 ft
Contours
Storm Mains
Max: 7.4 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 3.48 ft
City Data
Basin Area: 0.29 ac
"""
"""
"""
"
"""""""""#*
#*LANDAULN NECOACHMAN CT
NE
MANIT
O
U
R
D
N
E
COAC
H
M
A
N
L
N
N
E
960
944 962932946
942
948
944
9349
4
8
946
950
9
6
2
960946946938 948
944942
9 1 8
940
946
938
944
936
958
910934
942
912914
916 956940 954938934
9
5
2
936
95
0
948
922
924
920
926
91
8
928930932
944942
940
938
8969 36
934932930928
926924
898922900920
918
9029469049069081.4'
1.5'
1'
1'1.7'
1.9'
1.2'
1'
0.8'0.8'
1.4'1.6'
1'
0.8'
2'
1.9'2.5'
2.2'
2.3'2.3'
2.7'
2.5'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 100 feet
0 100
Feet2022 Pond Maintenance
City of Prior Lake
Basin P299
2 ft
10 ft
Contours
Storm Mains
Max: 2.7 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 1.22 ft
City Data
Basin Area: 1.27 ac
"
"""""#*
#*FISH
PO
INT
RD
SE
926926 9329
2
6
922
924
930906922
928920
926924918
926922916
920918914
908
910
908916912
9149249
2
2
9189
209169149109
1
2
6'
5.1'
3'
3.4'
3.1'
2.4'
0.1'
3'
3.7'
3'
5.7'
3.3'
3.5'
5.7'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 50 feet
0 50
Feet2022 Pond Maintenance
City of Prior Lake
Basin P333
2 ft
10 ft
Contours
Storm Mains
Max: 6 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 2.63 ft
City Data
Basin Area: 0.34 ac
"""#*
#*
946
944
936
942
940
938
936
904934
932
906926
928
924
930
922
920
918
9089 16
914
9 1 0912
908 9101.4'
2.5'
3'
3'
2.2'
2.1'
1.6'
3.2'
2.7'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 30 feet
0 30
Feet2022 Pond Maintenance
City of Prior Lake
Basin P145
2 ft
10 ft
Contours
Storm Mains
Max: 3.2 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 1.2 ft
City Data
Basin Area: 0.07 ac
!(
#*
#*
!(
#*
95
4
952
950
948 916946
9
4
4
9
4
2
9
4092
6
928
9
3
0
9
3
2
9
3
89
3
4
936920
918
922
924
0.9'4.1'
0.6'
0.7'
2.9'
4.3'
1'
3.4'4.6'
1.6'
1.8'
2'4.4'
2'0.9'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps - updated Date Saved: 8/4/2021¯
1 inch = 30 feet
0 30
Feet2022 Pond Maintenance
City of Prior Lake
Basin SWP-6654N-04
2 ft
10 ft
Contours
Storm Mains
Max: 4.4 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 1.77 ft
City Data
Basin Area: 0.09 ac
Water surface was surveyed at
917.631', NWL was taken to be
918.173' based on basin outlet
""""""""""""!(
#*
140 ST NE
140 ST NE
838860 848
840
860858 85885285 6842 840854
856 844852846
852
8
5
4
850
850
85
0
848
84
8
840.7'
840.9'
840.4'
840.6'
840.1'
840.2'
840.2'
841.7'
842.1'
842.4'
841.8'
842.3'
839.9'
839.4'
839'
839.1'
843.7'
843.7'
843.7'
843.7'843.7'
843.7'843.7'
843.7'843.7'843.7'843.7'843.7'
843.7'
843.7'
843.7'
843.7'843.7'
843.7'
843.7'
843.7'
843.7'843.7'
843.7'
843.7'
843.7'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 50 feet
0 50
Feet2022 Pond Maintenance
City of Prior Lake
Basin SWW-6554N-09
2 ft
10 ft
Contours
Storm Mains
Max: 839.0 ft
Min: 843.7 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 842.0 ft
City Data
Basin Area: 1.03 ac
"
""
#*
#*
FISH
POIN
T
RD S
E
980984992
986990 98 8
980 958982980960986 962984
982
988
980964978976
962
976 96497896 6
9689709729741'0.5'
1.9'
1'
1.6'0.7'
2.2'
0.7'
0.5'1'1.1'
3.8'
5.3'
5.9'
6.1'
3.3'
6'
4.5'
6.3'
5.2'
3.9'
5.9'Document Path: K:\018387-000\GIS\Maps\2021 Pond Survey\Pond Maps Date Saved: 8/2/2021¯
1 inch = 50 feet
0 50
Feet2022 Pond Maintenance
City of Prior Lake
Basin SWW-6852S-01
2 ft
10 ft
Contours
Storm Mains
Max: 6.3 ft
Min: 0 ft
Basin Depth
OCS!(
FES#*
Edge Point
Depth Point
Survey Data
Avg: 2.28 ft
City Data
Basin Area: 0.44 ac
Page 1 of 2
Public Works Consultant Pool
Work Order (2022-2023 Pond Maintenance Project)
WSB & ASSOCIATES, INCORPORATED, dba WSB
This work order (“Work Order”) is issued on this 6th day of September 2022 by the City of Prior
Lake (“City”) pursuant to the Public Works Consultant Pool – Master Agreement dated April 20,
2020 (“Contract”) between the City and WSB & Associates, Incorporated, dba WSB
(“Consultant”).
Based on the mutual promises and covenants set forth herein, the sufficiency of which are hereby
acknowledged, the City and Consultant agree as follows:
1. Scope of Work Order. Consultant agrees to provide, perform and complete all the services
requested by the City in this Work Order and attached Exhibit 1 (“Work”), which Work shall be
subject to the terms and conditions of this Work Order and the Contract.
2. Term of Work Order. All Work requested by this Work Order shall be completed by
December 31, 2023.
3. Compensation for Work Order. City agrees to pay the Consultant an hourly cost not-to-
exceed $25,600.00 as full and complete payment for the Work requested by this Work Order.
4. Consultant Representative. Consultant has designated Jake Newhall to manage the Work
Order subject to the supervision of Consultant’s representative.
ISSUED BY CITY OF PRIOR LAKE
___________________________________
City Manager
RECEIVED AND ACCEPTED BY
CONSULTANT
_____________________________________
By:_______________________________
Its:_______________________________
Page 2 of 2
Exhibit 1 – Scope of Work Order
F R A N K L I N T R L S E
BRUNSWICKAVESED U B L I N RD SE ERIN CI
R SE
TIMBER CRE
S
T
DR SEBL
UFFHEIGHTSTRLSEANNA TRL SE
PARK NICOLLET AVE SEScott County GIS
16
27
12
83
42
44
17
82
18
78
14
21
¯
This product is for informational purposes and is not suitable for legal, engineering, or surveying
purposes. This product has been produced by the City of Prior Lake for the sole purpose of
geographic reference. No warranty is made by the City of Prior Lake regarding specific accuracy
or completeness.
0 200 400 500 700
Feet
2022-2023 Pond Maintenance Project (Pond 197)
Council Item Location Map
9/9/2022