7.2. SR 06-21-2010City of
El -~
River
REQUEST FOR ACTION
To Item Number
Ma or and Ci Council 7.2.
Agenda Section Meeting Date Prepared by
Administration une 21, 2010 ohn Anderson P.E.
Item Description Reviewed by
182nd Avenue Storm Sewer Improvements Lori ohnson, Ci Administrator
Reviewed by
Action Requested
Authorization to proceed with storm sewer improvements at the intersection of 182nd Avenue and 181St
Lane.
Background/Discussion
The street was constructed in 2000 with the first plat of Trott Brook Farms. The native soils in the area
are clay and not free draining. The street section was built with a sand layer to provide drainage for the
street subgrade. The original construction included drain file in the road section to drain the sand layer.
The current storm sewer in the intersection of 182nd Avenue and 181St Lane discharge to a storm
treatment pond located northeast of the intersection. This pond flows to the large wetland to the north.
The water level in the large wetland is often high enough to back water up into the storm pond and the
storm sewer. As a result of the high water levels, the road subgrade becomes saturated. The saturated
subgrade places freeze /thaw forces on the existing storm pipes crossing the roadway causing differential
movement in the pavement surface.
The proposed storm sewer reconfiguration would route the storm sewer inlets on the south side of 182nd
Avenue and subgrade drain file to a pond located south and east of the intersection. The normal water
level in this pond is lower and will provide a positive drain for the area. The reconfiguration will also
eliminate road crossing of the larger concrete pipes around which the differential movement has been
observed. Construction will require the proposed storm sewer to cross two existing large gas mains that
run east and west. The gas mains were exposed to determine the elevation of the existing pipes and the
feasibility of crossing these pipes with the new storm sewer. The proposed plans have been reviewed and
meet the crossing criteria of Northern Natural Gas.
Financial Impact
Quotations for construction were solicited from two contractors to complete the work detailed on the
attached plan. The quotes received were as follows:
Brenteson Companies - $38,652.36
Northdale Construction - $48,544.10
The total project cost is $46,652.36 which includes the construction cost of $38,652.36, and overhead
cost of $8,000. The overhead cost includes preliminary engineering of $3,000 and construction related
engineering of $5,000. The stormwater fund has sufficient balance to fund this project.
Attachments
• Construction quotes (2)
• Construction Plan
Action Motion by Second by Vote
Follow Up
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PROJ: 2010 182ND AVE STORM SEWER IMP
CITY: ELK RIVER
ENG: BDM CONSULTING
BID ON:
ADD. #1 ADD 1 -DATED
ADD. #2 ADD 2 -DATED
ADD. #3 ADD 3 -DATED
ITEM DESCRIPTION
UNIT 0 UNIT PRC U P TOTAL
SCHEDULE1-STREET
1 MOBILIZATION LS
2 REMOVE CONCRETE CURB LF
3 REMOVE CONCRETE WALK SF
4 REMOVE CONCRETE PAVEMENT SY
5 REMOVE BITUMINOUS PAVEMENT (P) SY
6 SAWING BITUMINOUS PAVEMENT LF
(FULL DEPTH)
7 SALVAGE AGGREGATE SY
8 MILL BITUMINOUS SURFACE (1.5") SY
9 TYPE MV3 WEAR COURSE MIXTURE TON
(MVWE35035B)
10 TYPE LV3 NON-WEARING COURSE TON
MIXTURE (LVNW35030B)
11 BITUMINOUS MATERIAL FOR TACK GAL
COAT
12 ADJUST FRAME AND RING CASTING EA
13 4" CONCRETE SIDEWALK SF
14 CONCRETE CURB AND GUTTER 28" LF
SURMOUNTABLE
15 8" CONCRETE VALLEY GUTTER SY
16 8" CONCRETE VALLEY GUTTER EA
TRIANGULAR SECTION
17 TRUNCATED DOMES (PEDESTRIAN EA
CURB RAMP)
18 TRAFFIC CONTROL LS
19 INLET PROTECTION EA
SCHEDULE 1 -STREET TOTAL
SCHEDULE 2 -STORM
20 REMOVE SEWER PIPE (STORM) LF
21 4" PERF TP PIPE DRAIN LF
22 12" RC PIPE SEWER DES 3006, CL V LF
23 CONNECT TO EXISTING DRAINAGE EA
STRUCTURE
24 CONST DRAINAGE STRUCTURE EA
DESIGN 48-4020
25 REPAIR DRAINAGE STRUCTURE EA
SCHEDULE 2 -STORM TOTAL
1
108
68
21
371
232
$5,800.00
$7.00
$1.00
$10.00
$7.00
$4.00
136 $4.00
113 $13.20
47 $122.10
47 $119.90
20 $3.30
3 $400.00
68 $6.25
108 $17.60
5 $55.00
2 $550.00
1 $528.00
1 $500.00
6 $150.02
103
189
194
3
$10.00
$17.88
$40.29
$750.00
$5,800.00
$756.00
$68.00
$210.00
$2,597.00
$928.00
$544.00
$1,491.60
$5,738.70
$5,635.30
$66.00
$1,200.00
$425.00
$1,900.80
$275.00
$1,100.00
$528.00
$500.00
$900.12
$30,663.52
$1,030.00
$3,379.32
$7,816.26
$2,250.00
1 $1,905.00 $1,905.00
3 $500.00 $1,500.00
$17,880.58
BASE BID SUMMARY TOTAL $48,544.10
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CITY OF ELK RIVER HEREBY CERPFY 1HAr rHiS PUN,
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DESCRIPTION
s 182ND AVE STORM SEWER IMPROVEMENTS M »~ESa.~
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