Addednum #1 3-19-25.pdf
PDF 383 KB Posted
- Attached to
- Monroe Street Reconstruction
- Solicitation number
- Not on record
- Issued by
- Gratiot County, Michigan
About this file
This document is Addendum No. 1 for the Monroe Street Reconstruction project issued by the City of Hillsdale, Michigan, dated March 19, 2025. The addendum provides clarifications and modifications to the bid documents, with a submittal date of 2:00 pm on March 27, 2025. Key modifications include soil boring information for two locations (B-2 at the west end and B-3 at the east end), approval to use SDR 35 PVC pipes in specific 8" sections, confirmation that the city will fell required trees by the end of March, and that the contractor will be responsible for removing stumps left approximately 4' tall. The addendum also addresses an unauthorized fishing platform on city property, which will be removed if not voluntarily taken down by the end of April.
The soil boring logs (B-2 and B-3) provide detailed geological information for the project area, revealing varying layers of sand, aggregate base, and fill materials. Boring B-2 shows 3" HMA and 6" milled aggregate base with mostly fine to medium sand layers, while B-3 includes 4" brick fill and 9" natural aggregate base with more varied soil compositions, including sand with clay, gravel, and occasional brick pieces. These detailed geological insights are crucial for understanding the ground conditions and potential construction challenges for the 0.22-mile road reconstruction project, which includes concrete curb and gutter, sidewalk replacement, ADA ramp upgrades, drive approaches, and 800 linear feet of storm sewer construction.
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Other files
| File | Type | Posted |
|---|---|---|
| Monroe Street-Drawings-3-5-25.pdf | ||
| Monroe Street-Specifications-3-5-25.pdf | ||
| Addendum #2 3-25-25 - Final.pdf |
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Text version
97 NORTH BROAD STREET, HILLSDALE, MI 49242 TEL. 517.437.6440 www.cityofhillsdale.org
Date: March 19, 2025
PROJECT: Monroe Street Reconstruction
SUBMITTAL DATE: 2:00 pm on March 27, 2025
ADDENDUM NO. 1: Bid Documents for this project are being modified, supplemented, clarified or augmented as follows as part of this addendum. All revisions will hereby be made a part of the proposed
Contract Documents.
The following attachments are issued with this addendum.
Drawings: None
Specifications: Soil Borings B-2 & B-3
MODIFICATION NO. SUMMARY
1 Providing the soil borings for Monroe Street, B-2 is at the west end of the project and B-3 is at the east end in the brick area.
QUESTIONS & CLARIFICATIONS
1) Since the drawings call for Cl A pipe and some areas have less than 3’ of cover reinforced concrete pipe would be required, this is not available 8” size, what other material can be used?
The city will allow the 8” sections of pipes shown at 4+80, 6+15 and on page C6, from the manholes to the catch basins, can be SDR 35 PVC.
2) The city will be felling the required trees at the river, in front of 23 Monroe and on the NW corner of Manning/Monroe by the end of March. The contractor will be responsible, under the “Clearing” Special Provision (SP), to remove the stumps at these locations. The stumps will be left approximately 4’ tall.
3) The existing “fishing platform” on the edge of the river was placed on city property without permission. The owner will be notified and will have until the end of April to remove this structure or it will be removed as part of the “Clearing” SP and disposed of under this contract.
Sincerely, Kristin L. Bauer, P.E.
City Engineer – 517-437-6479 http://www.cityofhillsdale.org/
0.3
0.8
2.1
5.0
Core separated horizontally at 2" from surface, and separated vertically
3" HMA
6" Milled Aggregate Base
Brown poorly graded SAND with silt; mostly medium to fine sand, few silty fines, moist
Light brown poorly graded SAND; mostly fine sand, moist
Grades with occasional red brown silty sand seams
End of Boring
A-1
A-2
A-3
SP-SM
SP
3 1/4" During
DateElevation:
RW
NAVD 88 (GPS Observation)
Plugging Record: Backfilled borehole with compacted cuttings, patched pavement with cold patch.
06/02/2022
JV
Type
End
Tube
Sampler
Hand Auger
Location:
NA
Dia. Groundwater, ft.
Depth, ft.
Monroe StreetNotes:
Datum:
Drill Type:
Crew Chief:
Project:
Depth Drilled: 5.0 ft.
Seepage
Date Begin:
Core
Hillsdale, Michigan
Casing
Tooling
Coordinates:
Field Eng.:
1083.8 ft
Client:
SPT Hammer
None
Date End: 06/02/2022
Hand Auger
Rev. By:
N=155317.1 E=13050399.8 (MI South ift)
City of Hillsdale
Hillsdale 2022 Pavement Investigation
Component Percentages: Trace < 5%, Few 5-10%, Little 15-25%, Some 30-45%, Mostly 50-100% QP = Calibrated Penetrometer (tons/sq. ft.)
Elev.
FT. MST
REMARKS
* Visual estimate following ASTM D 2488 unless laboratory testing has been performed. Stratification changes are approximated between samples.
DD
pcf
Boring No.:
B-2
QP
tsf
Project No.:LOG
OF
BORING Sheet:
*DESCRIPTION
Sample
Number
Recov.
FT.
Dyn. Cone
Eq. "N":
ASTM STP 399
*USCS
Group
Symbol
221065
Depth
FT.
1083.6
1083.3
1083.1
1082.8
1082.6
1082.3
1082.1
1081.8
1081.6
1081.3
1081.1
1080.8
1080.6
1080.3
1080.1
1079.8
1079.6
1079.3
1079.1
1078.8
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
0.3
1.1
1.6
2.4
5.0
Fill: 0' to 5.0'4" Brick
9" Natural Aggregate Base
Brown poorly graded SAND with clay and gravel; mostly coarse to fine sand, few clayey fines, few coarse to fine gravel, moist, Fill with small brick pieces
Brown poorly graded SAND with silt; mostly coarse to fine sand, few silty fines, few organics, moist, Fill with possible Topsoil lenses
Light brown poorly graded SAND with silt;
mostly coarse to fine sand, few silty fines, trace coarse to fine gravel, moist, Fill
Grades with red brown silt lenses at 4.0'
Possible HMA pieces found at 4.5'
End of Boring
A-1
A-2
A-3
A-4
SP-SC
SP-SM
SP-SM
3 1/4" During
DateElevation:
RW
NAVD 88 (GPS Observation)
Plugging Record: Backfilled borehole with compacted cuttings, patched pavement with cold patch.
06/02/2022
JV
Type
End
Tube
Sampler
Hand Auger
Location:
NA
Dia. Groundwater, ft.
Depth, ft.
Monroe StreetNotes:
Datum:
Drill Type:
Crew Chief:
Project:
Depth Drilled: 5.0 ft.
Seepage
Date Begin:
Core
Hillsdale, Michigan
Casing
Tooling
Coordinates:
Field Eng.:
1084.9 ft
Client:
SPT Hammer
None
Date End: 06/02/2022
Hand Auger
Rev. By:
N=154931.5 E=13051013.9 (MI South ift)
City of Hillsdale
Hillsdale 2022 Pavement Investigation
Component Percentages: Trace < 5%, Few 5-10%, Little 15-25%, Some 30-45%, Mostly 50-100% QP = Calibrated Penetrometer (tons/sq. ft.)
Elev.
FT. MST
REMARKS
* Visual estimate following ASTM D 2488 unless laboratory testing has been performed. Stratification changes are approximated between samples.
DD
pcf
Boring No.:
B-3
QP
tsf
Project No.:LOG
OF
BORING Sheet:
*DESCRIPTION
Sample
Number
Recov.
FT.
Dyn. Cone
Eq. "N":
ASTM STP 399
*USCS
Group
Symbol
221065
Depth
FT.
1084.7
1084.4
1084.2
1083.9
1083.7
1083.4
1083.2
1082.9
1082.7
1082.4
1082.2
1081.9
1081.7
1081.4
1081.2
1080.9
1080.7
1080.4
1080.2
1079.9
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
| Addednum #1 3-19-25.pdf |
| Soil Borings - Monroe.pdf |
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