T24044 - Transportation Center - Addendum #1.pdf

ADDENDUM #1

Client: Birmingham Public Schools Project: 2025 Pavement Replacement

Facility: Transportation Center Project No.: T24044.PAV4

Address: Birmingham, MI 48025 Date: February 19, 2025

This Addendum forms a part of the Contract Documents and modifies the original Bidding Documents, dated February 3, 2025.

Acknowledge receipt of this addendum in the space provided on the Bid Form. Failure to do so may subject bidder to disqualification.

This addendum consists of 24 page(s).

For Information:

Item #1: For Information: Attached is the pre-bid sign in sheet.

Item #2: For Information: Photos taken by StructureTec are appended to this addendum.

Item #3: For Information: Excel Bid Tabulation Worksheet and Drawing Package available for download via http://structuretec.procureware.com Please utilize the Excel Bid Tabulation Worksheet to ensure there are no errors in the RFB Bid Form.

Item #4: For Information: If contractors need to visit the site they will need to schedule visits 48 hours in advance. Leonard Dietrich, 248-867-6954.

Item #5: For Clarification: StructureTec will be distributing the Warranty Audit Pricing described on the bid form prior to the bid due date for bidders to include. If bidders do not receive the Warranty Audit Pricing by EOB 02/25/25 please reach out to christine.hawkinson@structuretec.com to ensure that you receive the pricing to be included with your bid.

Item #6: For Clarification: Sealed bids are due Tuesday, February 25, 2025, no later than 2:00PM., local time, at Birmingham Public Schools, 31301 Evergreen Road, Beverly Hills, MI 48025. Sealed bids should be delivered and time stamped by the clerk no later than 2:00PM, local time.

Item #7: For Clarification: Sealed bids must include a bid security and signed and notarized copies of ALL affidavits listed in the RFB to be considered a completed bid.

http://structuretec.procureware.com/ mailto:christine.hawkinson@structuretec.com

A Addendum #1 Project No. T24044.PAV4 2025 BPS Pavement Replacement Program - TC February 19, 2025

Project Specifications Document:

Item #8: For Revision: Remove and replace entire Section 01103 Summary of Work with attached (12 pages).

Project Construction Plans Sheets 1-18

Item #9: For Clarification: The capacity of the Underground Detention Basin will be increased by approximately 70 CF pending final review by The City of Birmingham. Reference Plan Sheet 9, the “Underground Detention Basin Capacity = 49,692 CF” has been increased to 49,762 CF.

Item #10: For Revision: The pretreatment inlet identified as Contech Model “CS-6” on Sheet 14 is to be substituted for Contech Model “CS-4” per the attached Contech Details (1 page)

Alex Keifer Paul Gluszak P.E.

END OF ADDENDUM

PHOTO REPORT

Photo 1 - Photo 2 -

Overview of Area P-2 Overview of Area P-2

Photo 3 - Photo 4 -

Overview of Area P-2 Gate Valve at entrance to Area P-2

A Photo Report Project No. T24044 – BPS Transportation Center February 2025

Photo 5 - Photo 6 -

Overview of Area P-3 Overview of Area P-3

Photo 7 - Photo 8 -

Overview of Area P-3 Overview of Area P-3

Photo 9 - Photo 10 -

Overview of Area P-5 Overview of Area P-5

Photo 11 - Photo 12 -

Overview of Area P-5 Overview of Area P-5

Photo 13 - Photo 14 -

Overview of Area P-1 Overview of Area P-1

Photo 15 - Photo 16 -

ADA Stalls in Area P-1 Overview of Area P-1

Photo 17 - Photo 18 -

Overview of Area P-6.2 Standing water in Area P-6.2

Photo 19 - Photo 20 -

Overview of Area P-6.4 Masonry Wall in Area P-6.4

A

Birmingham Public Schools (BPS) Transportation Center – Project Specifications 2025 Pavement Program Summary of Work T24044.PAV3 01103 - 1 (Addendum #1) Feburary, 3 2025

SECTION 01103

SUMMARY OF WORK

PART 1 – GENERAL REQUIREMENTS

1.01 DESCRIPTION OF WORK

A. The Work shall be completed at:

Transportation Center

2205 Holland St

Birmingham, MI 48009

B. Area totals are as noted in plans and documents.

NOTE: Contractor is responsible for verification of all quantities and measurements.

1.02 BASE SCOPES OF WORK

A. General: This Section is for the convenience of the Contractor only; and should not be construed as a complete accounting of all Work to be performed.

B. The extent of the Work is indicated on the Drawings and by the requirements in each

Specification Section.

C. Base Bid Description of Work

1. General Conditions and Mobilization – This item of work shall include but not limited to all cost associated with mobilizing equipment, material and personnel, traffic controls, safety devices, access to right of way, permits, staging, underground utility locate, temporary protection, barricading, supervision, temporary facilities, sanitary conveniences, access to and from site, protection of property, storm structure inlet filters, warranty audit program, daily and final clean-up, etc. as required to complete the work. This item will be paid for on a Lump Sum (LS) basis.

2. Performance & Payment Bonds – As required in Section 00600. This item will be paid for on a Lump Sum (LS) basis.

3. Contingency Allowance - This item is a Lump Sum (LS) allowance to be used at the Owner’s discretion.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 2 (Addendum #1) Feburary, 3 2025

4. Construction Survey & Staking – This item of work includes all labor, equipment, and material required to survey and construction stake the project site affected by construction activities. Including locating and staking the ROW, property lines, project limits and all other construction activities where grade control is required. This pay item also includes establishing grades and elevations (vertical & horizontal control) to facilitate drainage and maintain grade for storm sewer (including underdrains), structures, storm water retention/ detention systems, subgrade, aggregate base, cement stabilized base, finished pavement, drainage ditches, sidewalk and swales. The Contractor will be responsible for ensuring that the final grade of the newly installed pavement matches the grade of the finished pavement as shown on the plan and details. This pay item will be paid for on a Lump Sum (LS) basis.

5. Soil Erosion & Sedimentation Control - This item of work includes all labor and material required to implement and maintain an Erosion and Sedimentation Control Plan including check dams, inlet filters, silt fence, washout basins, etc. during construction campus wide.

See Sheets 2 & 17. All erosion and sedimentation control measures taken for work completed on the project site must be per the State of Michigan, Oakland County, and the City of Birmingham requirements. Any permits required for this pay item, including review fees and inspection fees will be paid for by the Contractor. This item will be paid for on a Lump Sum (LS) basis.

6. Milling 5” +/- Full Depth to Remove All Existing Pavement at Areas P-2, P-5 & P-5.1 as shown on Sheet 16 per Detail on Sheet-15 – This item of work includes all materials and labor associated with performing full depth milling to a minimum depth of 5” +/- to ensure complete removal of the existing pavement. Full depth saw cuts shall be performed at pavement milling limits to provide a clean edge for adjacent pavement placement. Legally dispose of materials off site. This item shall be paid for on a Square Foot (SF) basis.

Reference Section 02741 – Asphalt Paving for specifications.

7. Milling 4” +/- Full Depth to Remove Existing Pavement at Areas P-3, P-3.1 & P-4 as shown on Sheet 16 per Detail on Sheet-15 – This item of work includes all materials and labor associated with performing full depth milling to a minimum depth of 4” +/- to ensure complete removal of the existing pavement. Full depth saw cuts shall be performed at pavement milling limits to provide a clean edge for adjacent pavement placement. Legally dispose of materials off site. This item shall be paid for on a Square Foot (SF) basis.

Reference Section 02741 – Asphalt Paving for specifications.

8. Excavate/ Remove 6" of Existing Subbase Material at Areas P-2 & P-5 – This item of work includes all labor and material required to excavate the existing subbase and subgrade to a depth of 6” to accommodate the placement of 6” of aggregate base course compacted in place. Legally dispose of excavated materials off site. The grading & compaction of the subgrade to 95% of its maximum density or proof rolling will be paid for as part of the “Finish Grade & Compact to Ensure Positive Drainage & Density ….” pay item. This item shall be paid for on a Square Foot (SF) basis.

9. Excavate/ Remove 8" of Existing Subbase Material at Areas P-3, P-4 & P-5.1 – This item of work includes all labor and material required to excavate the existing subbase and subgrade to a depth of 8” to accommodate the placement of 8” of aggregate base course compacted in place. Legally dispose of excavated materials off site. The grading & compaction of the subgrade to 95% of its maximum density or proof rolling will be paid for as part of the “Finish Grade & Compact to Ensure Positive Drainage & Density ….” pay item. This item shall be paid for on a Square Foot (SF) basis.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 3 (Addendum #1) Feburary, 3 2025

10. Allowance – Undercut Insufficient Subbase Areas as Required – This item of work includes all labor and materials associated with undercutting sub-base areas deemed insufficient after proof rolling the existing sub-base. This item of work includes excavation to a minimum of 12” below existing sub-base and placement of MI-DOT 21AA limestone aggregate base compacted in place to 95% of its maximum unit weight. This item of work is discretionary and will be used as needed. This item of work will be paid for on a Square Foot (SF) basis.

11. Provide Portland Cement Stabilization at Areas P-2 & P-5 as shown on Sheet 16 per Detail on Sheet-15 – This item of work includes all material and labor associated with pulverizing any remaining asphalt to a size less than 3” and providing Type I Portland cement stabilization of the existing base to a depth of 12” at a rate determined by the Geotechnical Engineer in accordance with the MI-DOT and contract specifications. See Detail on Sheet

15. The Geotechnical Engineer will be hired by the Contractor and will submit the mix design documentation and any related testing data to the Engineer/ Consultant. This item shall be paid for on a per Square Foot (SF) basis. Reference Section 02245 Soil Stabilization for Pavement.

12. Furnish & Install 6" Underdrain as Shown on Plans per Detail on Sheet-15 – This item of work includes all material and labor associated with the excavation (and legal disposal of excavated material offsite), MI-DOT pea stone bedding & backfill (MI-DOT 34R open graded aggregate), MI-DOT geotextile wrap, and installation of a 6" corrugated, perforated polyethylene pipe (meeting MI-DOT 909 & AASHTO 252) with a fabric "sock" type covering (see detail on Sheet 15). The pea stone bedding shall be wrapped in geotextile liner.

Included in this pay item is the connection to the existing storm structure including provide & installing a watertight seal. This item shall be paid for on a per Lineal Foot (LF) basis.

Reference Section 02620 Subdrainage for Pavements.

13. Furnish & Install Geotextile Stabilization Fabric at Areas P-3 & P-3.1 - Furnish & Install Geotextile Stabilization Fabric at Area P-3 – This item of work includes all material and labor associated with providing and installing MI-DOT geotextile stabilization fabric at areas P-3 & P-3.1. This work will be completed per the manufacturer’s specification and directions. This item of work includes any ancillary hardware needed to secure the geotextile stabilization fabric. See Detail D-1 on Sheet 15. This item shall be paid for on a per Square Yard (SY) basis. Reference Section 02245 Soil Stabilization for specifications.

14. Provide 6" of MI-DOT 21AA Dense Graded Limestone Aggregate Base C.I.P at Areas P-2 & P-5 – This item of work includes all material, labor, and equipment associated with providing and installing 6” of MI-DOT 21AA Dense Graded Limestone Aggregate Base compacted in place to 98% of its maximum density in areas P-2 & P-5. See Detail on Sheet

15. This item shall be paid for on a per Square Foot (SF) basis. Reference Section 02303 Earthwork for Pavement.

15. Provide 8" of MI-DOT 21AA Dense Graded Limestone Aggregate Base C.I.P at Areas P-3 & P-3.1 – This item of work includes all material, labor, and equipment associated with providing and installing 8” of MI-DOT 21AA Dense Graded Limestone Aggregate Base compacted in place to 98% of its maximum density in areas P-3 & P-3.1. See Detail on Sheet

15. This item shall be paid for on a per Square Foot (SF) basis. Reference Section 02303 Earthwork for Pavement.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 4 (Addendum #1) Feburary, 3 2025

16. Demolish Existing Parking Island in Area P-3 Where Shown On The Plans – This item of work includes all labor and materials required to completely remove and legally dispose offsite the parking island in area P-3 where shown on the plans. This includes the removal and legal disposal of the curb, sidewalk, sod, topsoil, earth or gravel to a depth of 12” below the finished pavement grade. This item shall be paid for on a per Square Foot (SF) basis.

17. Demolish Existing Curb & Backfill in Area P-4 – This pay item includes all labor and material required to demolish the existing concrete curb and legally dispose of offsite. Included in this pay item is all labor and material required to backfill the void created by the curb removal with MDOT 21AA Dense Graded Limestone Aggregate Base or MI-DOT Class II granular backfill compacted to 95% of its maximum density. This item shall be paid for on a per Lineal Foot (LF) basis.

18. Demolish Existing 7’ x 7’ Concrete Catch Basin Collar at CB 17 & Replace in Kind with a 8’ x 8’ Concrete Collar in Area P-3 per Detail on Sheet 15 – This pay item includes all labor and material required to demolish the existing concrete catch basin collars and legally dispose of the demolished material offsite where shown on the plans and as directed by the Engineer. Also included is the excavation to the proper grade, preparation of the subbase by means of compaction, and installation of a 2-foot wide by 2 foot long by 8-inch-deep concrete collar around the structure lid. If the existing subbase is deemed inadequate by the Engineer, an additional 6 inches excavation and replacement with MI-DOT Class II granular backfill CIP will also be included in this item. This item shall be paid for on an Each (EA) basis.

19. Install 8’ x 8’ Concrete Collar at CB 1 in Area P-5, MH 16 in Area P-2, CB 18 in Area P- 3, and CS 6 & CS 8 in Area P-3.1 per Detail on Sheet 15 – This item of work includes all material and labor associated with the removal of the existing pavement and installation of the concrete collars per Detail D-4 on Sheet 15. This shall be done in a manner that results in clean, straight edges. Also included is the excavation to the proper grade, preparation of the subbase by means of compaction, and installation of an 8-foot wide by 8-foot long by 8-inch-deep concrete collar around the structure lid. If the existing subbase is deemed inadequate by the Engineer, an additional 6 inches excavation and replacement with MI-DOT Class II granular backfill CIP will also be included in this item. This item shall be paid for on an Each (EA) basis. Reference Section 03303 Cast In Place Concrete for specifications.

20. Demolish Existing 10’ W x 18’ L Concrete Collar & Replace in Kind at C.B.’s 3 & 4, 9 & 9A, 11 & 12 in Area P-5 per Detail on Sheet-15 – This pay item includes all labor and material required to demolish the existing concrete catch basin collars and legally dispose of the demolished material offsite where shown on the plans and as directed by the Engineer. If the existing subbase is deemed inadequate by the Engineer, an additional 6 inches excavation and replacement with MI-DOT Class II granular backfill CIP will also be included in this item.

This item shall be paid for on an Each (EA) basis.

21. Finish Grade & Compact to Ensure Positive Drainage & Density at Areas P-2, P-3, P-

3.1 & P-5 – This item of work includes all material, labor, and equipment associated with the preparation of the subbase grade, finishing the grade to insure proper grade, slope & elevation, and compaction of the subbase to 98% of its maximum density. This item shall be paid for on a per Square Foot (SF) basis.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 5 (Addendum #1) Feburary, 3 2025

22. Provide 3" HMA MI-DOT (PG 64-22) 3C Base Course at Areas P-2 & P-5 per Detail on Sheet-15 – This pay item includes all material and labor associated with providing & placing 3” of compacted in place (CIP) HMA MI-DOT 3C (PG 64-22) Base Course at areas P-2 & P- 5 per Detail on Sheet 15. Included in this pay item is an application of a track coat prior to placement of the HMA surface course. This item shall be paid for on a per Square Foot (SF) basis. Reference Section 02741 - Asphalt Paving for specifications.

23. Provide 2.5" HMA MI-DOT (PG 64-22) 3C Base Course at Areas P-3 & P-3.1 per Detail on Sheet-15 – This pay item includes all material and labor associated with providing & placing 2.5” of compacted in place (CIP) HMA MI-DOT 3C (PG 64-22) Base Course at areas P-3 & P-3.1 per Detail on Sheet 15. Included in this pay item is an application of a track coat prior to placement of the HMA surface course. This item shall be paid for on a per Square Foot (SF) basis. Reference Section 02741 - Asphalt Paving for specifications

24. Provide 2" HMA MI-DOT (PG 64-22) 4C Surface Course at Areas P-2 & P-5 per Detail on Sheet-15 – This pay item includes all material and labor associated with providing & placing 2” of compacted in place (CIP) HMA MI-DOT 4C (PG 64-22) Surface Course at areas P-2 & P-5. See Detail on Sheet 15. This item shall be paid for on a per Square Foot (SF) basis.

Reference Section 02741 - Asphalt Paving for specifications.

25. Provide 1.5" HMA MI-DOT (PG 64-22) 4C Surface Course at Areas P-3 & P-3.1 per Detail on Sheet-15 – This pay item includes all material and labor associated with providing & placing 1.5”” of compacted in place (CIP) HMA MI-DOT 4C (PG 64-22) Surface Course at areas P-3 & P-3.1.. See Detail on Sheet 15. This item shall be paid for on a per Square Foot (SF) basis. Reference Section 02741 - Asphalt Paving for specifications.

26. Furnish & Install 2’ x 2’ x 8” D Concrete Collar Around Water Valve at Holland Ave. in Area P-2 per Detail on Sheet 15 – This item of work includes all material and labor associated with the removal of the existing pavement and installation of the concrete collar around the water valve in Area P-2 at Holland Ave. per the Detail on Sheet 15. This shall be done in a manner that results in clean, straight edges. Also included is the excavation to the proper grade, preparation of the subbase by means of compaction, and installation of a 2-foot wide by 2 foot long by 8-inch-deep concrete collar around the structure lid. If the existing subbase is deemed inadequate by the Engineer, an additional 6 inches excavation and replacement with MI-DOT Class II granular backfill CIP will also be included in this item. This item shall be paid for on an Each (EA) basis. Reference Section 03303 Cast In Place Concrete for specifications.

27. Vertical Adjustment on Utility Gate Valve Box Assembly at Holland Ave. in Area P-2 – This item of work includes all material and labor associated with the excavation and removal of the failed portions of the utility gate valve box assembly (including riser sections) at Holland Ave. in Area P-2, furnishing and installing a new gate valve box assembly and riser section as needed. This work shall be done in accordance with the relevant utilities details and specifications for adjusting valve box assemblies. Included in this pay item is the cost of any full depth saw cuts to provide a clean edge and furnishing and installing MI-DOT Class II granular structural backfill CIP. The item of work shall be paid for on an Each (EA) basis.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 6 (Addendum #1) Feburary, 3 2025

28. Vertical Adjustment on Sanitary Manhole in Area P-3 – This item of work includes all material and labor associated with the excavation and removal of the failed portions of the Sanitary Manhole #3 (including riser sections) in Area P-3, furnishing and installing a new manhole and riser section as needed. This work shall be done in accordance with the relevant utilities details and specifications for adjusting valve box assemblies. Included in this pay item is the cost of any full depth saw cuts to provide a clean edge and furnishing and installing DOT granular structural backfill CIP. The item of work shall be paid for on an Each (EA) basis.

29. Allowance – Vertical Reconstruction of Existing Storm Structures Campus Wide per Detail on Sheet-15 – This item of work includes all material and labor associated with the excavation and removal of the failed portions of the concrete structure, the replacement with new concrete blocks or bricks, or with the use of a precast cone section or adjustment ring per Detail on Sheet 15. Mortar shall be used to create a watertight concrete finish, and a tar strip shall be installed between the concrete cone and cover. Included in this pay item are any full-depth saw cuts required and backfilling excavated areas with MI-DOT aggregate base CIP. The item shall be paid for on a Vertical Foot (VF) basis.

30. Furnish & Install 6” Flush Concrete Sidewalk in Area P-3 Where Shown On The Plans – This item of work includes all labor and material required to furnish & install a 6” deep flush concrete sidewalk where shown on the plans in area P-3. Included in this pay item are any full depth saw cuts to leave a clean straight edge to the adjacent pavement, furnishing, placing and compacting in place (to 95% of its maximum density) a 6” MI-DOT 21AA limestone aggregate base, a 6” deep concrete sidewalk, expansion & contraction joints, broom finishing, and an application of an approved concrete curing compound. This item shall be paid for on a per Square Foot (SF) basis. Reference Section 03300 - Cast-In-Place Concrete for specifications

31. Remove Existing ADA Signage in Area P-3 Where Shown on the Plans – This item of work includes all labor and material required to remove and legally dispose of offsite ADA signage and post where shown on the plans and as directed by the Engineer. This pay item includes filling any void created by removing the sign post or bollard with DOT granular backfill. This item is to be paid for on an Each (EA) basis.

32. Furnish & Install 6” Bollards, Sleeve, Post & ADA Signage Assembly Where Shown on the Plans in Area P-3 per Detail on Sheet-15 – This item of work includes all labor and materials required to furnish and install a 6” bollard, embedded with a post with attached ADA parking sign as shown on the plans per the Detail on Sheet 15 and as directed by the Engineer. Also included in this item is the cost of excavation, backfill, concrete, hardware and other materials required to provide a fully functioning bollard with an attached ADA sign. This item also includes the legal disposal of excavated material offsite. The ADA sign must meet applicable local, state, and Federal requirements. This item is to be paid for on an Each (EA) basis.

33. Furnish & Install Topsoil (Full Depth) & Seed to Areas P-4 & P-5.1 per Detail on Sheet- 17 – This item of work includes all labor and material required to furnish topsoil with a depth from the subgrade to the finished grade meeting the back of curb per Detail on Sheet 17. The finished product shall be free of all debris including larger rocks and vegetation. This pay item also includes furnishing & installing a THM hydroseed grass mixture, fertilizer, with daily watering per Section 816 of the MI-DOT Standard Specifications for Construction uniformly throughout areas P-4 & P-5.1. This item shall be paid for on a per Square Foot (SF) basis.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 7 (Addendum #1) Feburary, 3 2025

34. Site Restoration: Topsoil, Seed & Mulch Campus Wide – This item of work includes all material and labor associated with the restoration, including furnishing and installing grass seed, fertilizer and mulch in the areas disturbed by construction activities. Restoration shall include the installation of no less than 4" of topsoil, back filling holes and ruts with approved backfill, compacting and leveling filler material to meet the surrounding contours, sweeping of impervious surfaces or any other service needed to obtain the status of the property before construction. The finished product shall be free of all debris including large rocks and vegetation. Seeding shall include the application of an indigenous type of grass seed by the method of hydro seeding, fertilizer and daily watering (until substantial growth has taken place) per Section 816 of the MI-DOT Standard Specifications for Construction. This item is paid on a Lump Sum (LS) basis.

35. Paint Striping in Kind & Color – This item of work includes all material and labor associated with the application of MI-DOT approved pavement marking in kind and color to that existing on site, including ADA parking and access lanes, parking stalls, fire lanes, bollards, light pole bases, crosswalks & concrete curbs unless otherwise designated on the plans and in accordance with federal, state, and local requirements. This item shall be paid for on a Lump Sum (LS) basis. Reference Section 02720 - Painted Traffic Markings for specifications.

36. Recycled Asphalt Pavement “RAP” Credit – This item is a credit for the asphalt millings to be recycled. This item is credited to the Owner on a per Ton (TON) basis as removed and disposed legally off site.

37. Demolish Existing 24” Storm Sewer Pipe Between CB 9A & CB 13 in Areas P-2 & P-5 – This item of work includes all labor and material required to excavate, remove or demolish the existing 24” storm sewer pipe, backfill excavated area with MI-DOT Class II structural backfill compacted to 95% of its maximum density, reference Detail on Sheet 17, sand backfill trench. Legally dispose of excavated earth and demolished storm pipe offsite. Included in this pay item is the cost of trimming any connecting sewer edges to meet the required lines and grades without weakening or damaging those parts of the remaining sewer. The cutting of the demolished sewer and capping off the remaining sewer is included in this pay item.

Temporary shoring of the trench and any temporary or permanent bulkheads required during demolition are included in this pay item. This item shall be paid for on a per Lineal Foot (LF) basis.

38. Demolish Existing 15” Storm Sewer Pipe Between MH 16 & CB 17 in Areas P-2 & P-3 – This item of work includes all labor and material required to excavate, remove or demolish the existing 15” storm sewer pipe, backfill excavated area with MI-DOT Class II structural backfill compacted to 95% of its maximum density, reference Detail on Sheet 17, sand backfill trench. Legally dispose of excavated earth and demolished storm pipe offsite. Included in this pay item is the cost of trimming any connecting sewer edges to meet the required lines and grades without weakening or damaging those parts of the remaining sewer. The cutting of the demolished sewer and capping off the remaining sewer is included in this pay item.

Temporary shoring of the trench and any temporary or permanent bulkheads required during demolition are included in this pay item. This item shall be paid for on a per Lineal Foot (LF) basis.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 8 (Addendum #1) Feburary, 3 2025

39. Remove & Replace Concrete Curb & Gutter, Type S, per detail on Sheet 15 – This item of work includes all material and labor associated with the removal and replacement of existing sections of concrete curb & gutter. Includes the removal and legal disposal of existing concrete curb and gutter, grade and compact existing base remove weak or poor soils and replace with MDOT Crushed Aggregate base compacted to 95% of maximum unit weight, place concrete curb and gutter with broom finishing and applying an approved concrete curing compound.

This item shall be paid on a per Lineal Foot (LF) basis. Reference Section 03300 - Cast-In- Place Concrete for specifications.

40. Furnish & Install 24” C76 CL IV Storm Sewer Pipe in Areas P-3 & P-5 per Detail on Sheet 17 – This item of work includes all labor and material required to excavate and furnish & install a 24” C76 CL IV storm sewer pipe where shown on the plans per Sheet 17, sand backfill trench. Backfill the excavated trench area with MI-DOT Class II structural backfill compacted to 95% of its maximum density. Legally dispose of excavated earth offsite. Included in this pay item is the cost of furnishing and installing any trench shoring, temporary bulkheads, pipe bedding, trench undercutting & backfill (if needed), sewer trimming, connections or taps to existing sewers or structures, joints, gaskets or other ancillary hardware required to install a fully functioning storm sewer. This item shall be paid for on a per Lineal Foot (LF) basis.

41. Furnish & Install 15” C76 Class IV Sewer Pipe in Areas P-2 & P-3 per Detail on Sheet 17 – This item of work includes all labor and material required to excavate and furnish & install a 15” C 76 CL IV storm sewer pipe where shown on the plans per Sheet 17, sand backfill trench. Backfill the excavated trench area with MI-DOT Class II structural backfill compacted to 95% of its maximum density. Legally dispose of excavated earth offsite. Included in this pay item is the cost of furnishing and installing any trench shoring, temporary bulkheads, pipe bedding, trench undercutting & backfill (if needed), sewer trimming, connections or taps to existing sewers or structures, joints, gaskets or other ancillary hardware required to install a fully functioning storm sewer. This item shall be paid for on a per Lineal Foot (LF) basis.

42. Furnish & Install 12” C76 Class IV Sewer Pipe in Area P-3 per Detail on Sheet 17 – This item of work includes all labor and material required to excavate and furnish & install a 12” C 76 CL IV storm sewer pipe where shown on the plans per Detail on Sheet 17, sand backfill trench. Backfill the excavated trench area with MI-DOT Class II structural backfill compacted to 95% of its maximum density. Legally dispose of excavated earth offsite. Included in this pay item is the cost of furnishing and installing any trench shoring, temporary bulkheads, pipe bedding, trench undercutting & backfill (if needed), sewer trimming, connections or taps to existing sewers or structures, joints, gaskets or other ancillary hardware required to install a fully functioning storm sewer. This item shall be paid for on a per Lineal Foot (LF) basis.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 9 (Addendum #1) Feburary, 3 2025

43. Furnish & Install 78” CMP Stormwater Detention System in Area P-3.1 per Plans and Details (See Sheets 10, 12-14) Includes Excavation, Bedding, Backfill, & Ancillary Hardware – This item of work includes all labor and materials required to furnish and install a 78” diameter corrugated metal pipe (CMP) Stormwater Detention System in area P-3.1 per plans and details. Included in this pay item is the excavation, shoring, 6A pipe bedding, MI- DOT Class II structural backfill (compacted in place to 95% of its maximum density), taps or connections to storm structures and storm pipe or combined sewer pipe, corrugated metal pipe sections, detention system riser sections, frames and covers, geomembrane, geotextile fabric, control structures CS 4 & CS 8, outlet control structures, and any ancillary hardware required by the manufacturer to provide a fully functioning stormwater detention system. Also included in this pay item is the demolition of the concrete light pole base and removal and salvaging of the light pole. The Contractor will coordinate with the School District as to the area the light pole will be stored. Additionally, this pay item includes the disconnecting of the electrical power wires to the light pole, removal and disposal of the power wires to the edge of the excavation for the detention system, and leaving the remaining power lines or wires capped off in a safe manner that meets the current electrical codes for the City of Birmingham.

Any permits required for this work including inspection fees will be part of this pay item. The installation will be per the plans, specifications, details and the applicable standards and specifications of the City of Birmingham and Oakland County. The Contractor will be required to obtain and pay for any permits needed to install/ construct the stormwater detention system required by the City of Birmingham and Oakland County. This would include review and inspection fees. This item shall be paid for on a Lump Sum (LS) basis.

44. Furnish & Install 4’ Dia. Precast Concrete Storm Structure CB 9A in Area P-5 Where Shown on the Plan per Detail on Sheet 17 – This item of work includes all labor and materials required to furnish & install a 4’ diameter precast concrete manhole structure meeting the City of Birmingham/ Oakland County specifications and per the Detail on Sheet

17. Included in this pay item is the excavation (and legal disposal of excavated material offsite), temporary shoring, aggregate bedding, inlet & outlet openings, taps or connections, backfilling with MI-DOT Class II structural backfill compacted in place to 95% of its maximum density, structure lids & cones, and the manhole frame & cover. This item shall be paid for on an Each (EA) basis.

45. Furnish & Install 4’ Dia. Precast Concrete Manhole Structure MH 16 in Area P-2 Where Shown on the Plan per Detail on Sheet 17 – This item of work includes all labor and materials required to furnish & install a 4’ diameter precast concrete manhole structure meeting the City of Birmingham/ Oakland County specifications and per the Detail on Sheet

17. Included in this pay item is the excavation (and legal disposal of excavated material offsite), temporary shoring, aggregate bedding, inlet & outlet openings, taps or connections, backfilling with MI-DOT Class II structural backfill compacted to 95% of its maximum density, structure lids & cones, and the manhole frame & cover. This item shall be paid for on an Each (EA) basis.

46. Furnish & Install 4’ Dia. Precast Concrete Catch Basin Structure CB 17 in Area P-3 Where Shown on the Plan per Detail on Sheet 17 – This item of work includes all labor and materials required to furnish & install a 4’ diameter precast concrete catch basin structure meeting the City of Birmingham/ Oakland County specifications and per the Detail on Sheet

17. Included in this pay item is the excavation (and legal disposal of excavated material offsite), temporary shoring, aggregate bedding, inlet & outlet openings, taps or connections, backfilling with MI-DOT Class II structural backfill compacted to 95% of its maximum density, structure lids & cones, and the manhole frame & cover. This item shall be paid for on an Each (EA) basis.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 10 (Addendum #1) Feburary, 3 2025

47. Replace Existing Frame & Cover with New Type E Inlet Cover per Detail on Sheet 17– This item of work includes all labor and materials required to remove and legally dispose of the existing cast iron inlet cover and frame. Also included in this pay item is the cost to furnish and install a new type E cast iron inlet cover set in a mortar bed. This item shall be paid for on an Each (EA) basis.

1.03 ALTERNATE BID DESCRIPTION OF WORK

A. General: This Section is for the convenience of the Contractor only and should not be construed as a complete accounting of all Work to be performed.

B. The extent of the Work is indicated on the Drawings and by the requirements in each Specification Section.

ALTERNATE BID 1

48. Milling 2” +/- Partial Depth to Remove Existing Pavement at Area P-1 to Meet 2”

Pavement Cross Section per Detail on Sheet 15 – This item of work includes all material and labor associated with performing partial depth milling to ensure removal of existing asphalt pavement. Partial depth saw cut shall be performed at pavement milling limits to provide a clean edge for adjacent pavement placement. Legally dispose of milled materials off site. This item shall be paid for on a Square Foot (SF) basis. Reference Section 02741

– Asphalt Paving for specifications.

49. Provide 2" HMA MI-DOT (PG 64-22) 4C Surface Course at Area P-1 per Detail on Sheet 15 – This pay item includes all material and labor associated with providing & placing 2” of compacted in place (CIP) HMA MI-DOT 4C (PG 64-22) Surface Course. See Detail on Sheet

15. This item shall be paid for on a per Square Foot (SF) basis. Reference Section 02741 - Asphalt Paving for specifications.

50. Remove & Replace Existing ADA Signage in Area P-1 Where Shown on the Plans per Detail on Sheet-15 – This item of work includes all labor and material required to remove, legally dispose of offsite the existing ADA signage & post or bollard, and to furnish & install new ADA signage including galvanized steel post or bollard where shown on the plans and as directed by the Engineer per Detail on Sheet 15 This pay item includes any ancillary hardware required to attach the new sign to the post or bollard. This item is to be paid for on an Each (EA) basis.

ALTERNATE BID 2

51. Furnish & Install Rolled Concrete Curb at North & East Edge of Area P-3 & Southeast

Edge of Area P-5 per Detail on Sheet 15 - This pay item includes all material and labor associated with providing & placing a rolled concrete curb per Detail on Sheet 15 as shown on the plans and as directed by the Engineer. This item of work includes the removal and disposal offsite of excess soils, preparation of the native subbase by grading and compacting, installation of a minimum 4” of MI-DOT class II granular base (CIP), broom finishing, and application of an approved concrete curing compound. This item shall be paid for on a per Lineal Foot (LF) basis. Reference Section 03300 - Cast-In-Place Concrete for specifications

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 11 (Addendum #1) Feburary, 3 2025

ALTERNATE BID 3

52. Demolish Existing Concrete Pavement at Areas P-6.3 & P-6.4 – This item of work includes all material and labor associated with the removal of the existing concrete pavement and underlying subbase at areas P-6.3 & P-6.4 to accommodate the proposed 8” concrete pavement section. Included in this pay item is the removal of excess soil as needed and the legal disposal of demolished or excavated material offsite. Also included in this pay item are any full depth saw cuts needed to leave a clean edge to the adjacent pavement. This item of work will be directed by the Engineer. This pay item shall be paid for on a per Square Foot (SF) basis. Reference Section 03300 - Cast-In-Place Concrete for specifications.

53. Furnish & Install 8” D Fiber Reinforced Concrete Pavement at Areas P-6.3 & P-6.4 per Detail on Sheet 15 – This item of work includes all material and labor associated with furnish & installing a 8” deep fiber reinforced concrete pavement at areas P-6.3 P-6.4 per Detail on Sheet 15. Also included in this pay item are saw cuts, expansion paper, joints, tie bars, preparation of the native subbase by grading and compacting, installation of a minimum 4” of MI-DOT class II granular base (CIP) and providing and installing a fiber (polypropylene) reinforced concrete pavement, broom finishing, and an application of an approved concrete curing compound. The fibers will be applied at a dosage rate per the manufacturer’s direction.

This item of work will be directed by the Engineer. This pay item shall be paid for on a per Square Foot (SF) basis. Reference Section 03300 - Cast-In-Place Concrete for specifications.

54. Demolish Cement Block Masonry Wall in Area P-6.4 – This item of work includes all labor and material required to demolish the cement masonry block wall in area P-6.4 and legally dispose of offsite the debris resulting from the demolition. The demolition of the cement block masonry wall includes removing any block or concrete footing full depth beneath the proposed finished pavement. Additionally, this item includes any full depth saw cuts required to provide a clean straight edge, backfilling the void created by the removal of the footing material with MI-DOT 21AA limestone aggregate base compacted in place to 95% of its maximum density to the bottom of the proposed concrete pavement. This item shall be paid for on a per Lineal Foot (LF) basis.

55. Furnish & Install Galvanized Chain Link Fence in Area P-6.4 per Detail on Sheet 15 – This item of work includes all labor and material required to furnish & install a galvanized chain link fence in area P-6.4 where shown on the plans per Detail on Sheet 15. This item of work includes the excavation (and legal disposal offsite of those materials), concrete, backfill materials and compaction in place, galvanized chain link fencing, posts, and ancillary hardware required to provide a fully functioning galvanized chain link fence surrounding the dumpster pad in area P-6.4. This item shall be paid for on a per Lineal Foot (LF) basis.

1.04 WARRANTY WORK

A. Perform warranty work as required following Consultant’s 12-month warranty audit after project completion.

B. Provide a written two (2) year contractor's warranty against defective materials, defective workmanship, and pavement failures. The warranty cover 100% replacement of the completed work as required to maintain the site in good condition.

2025 Pavement Program Summary of Work T24044.PAV3 01103 - 12 (Addendum #1) Feburary, 3 2025

PART 2 – PRODUCTS

2.01 NOT USED

PART 3 – EXECUTION

3.01 NOT USED

END OF SECTION 01103

SOLIDS STORAGE SUMP

INLET PIPE

(MULTIPLE INLET PIPES

MAY BE ACCOMMODATED)

OUTLET PIPE

V A

R I E

S

BB

PLAN VIEW B-B

NOT TO SCALE

ELEVATION A-A

NOT TO SCALE

FIBERGLASS INTERNAL

COMPONENTS

FLOW

CONTRACTOR TO GROUT

TO FINISHED GRADE

GRADE

RINGS/RISERS

A

A

48" [1219] I.D. MANHOLE

STRUCTURE

TOP SLAB ACCESS

(SEE FRAME AND COVER

DETAIL)

F

L

O

W

TOP OF CENTER CHAMBER

(EXTENSIONS AVAILABLE

AS REQUIRED)

INLET PIPE(S)

LOCATION MAY

VARY WITHIN 260°

PERMANENT

POOL ELEVATION

FRAME AND COVER

(DIAMETER VARIES)

NOT TO SCALE

www.ContechES.com

800-338-1122 513-645-7000 513-645-7993 FAX

9025 Centre Pointe Dr., Suite 400, West Chester, OH 45069

CS-4

CASCADE SEPARATOR

STANDARD DETAIL

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CASCADE SEPARATOR DESIGN NOTES

THE STANDARD CS-4 CONFIGURATION IS SHOWN. ALTERNATE CONFIGURATIONS ARE AVAILABLE AND ARE LISTED BELOW. SOME CONFIGURATIONS

MAY BE COMBINED TO SUIT SITE REQUIREMENTS.

CONFIGURATION DESCRIPTION

GRATED INLET ONLY (NO INLET PIPE)

GRATED INLET WITH INLET PIPE OR PIPES

CURB INLET ONLY (NO INLET PIPE)

CURB INLET WITH INLET PIPE OR PIPES

GENERAL NOTES

1. CONTECH TO PROVIDE ALL MATERIALS UNLESS NOTED OTHERWISE.

2. FOR SITE SPECIFIC DRAWINGS WITH DETAILED STRUCTURE DIMENSIONS AND WEIGHT, PLEASE CONTACT YOUR CONTECH ENGINEERED

SOLUTIONS LLC REPRESENTATIVE. www.ContechES.com

3. CASCADE SEPARATOR WATER QUALITY STRUCTURE SHALL BE IN ACCORDANCE WITH ALL DESIGN DATA AND INFORMATION CONTAINED IN

THIS DRAWING. CONTRACTOR TO CONFIRM STRUCTURE MEETS REQUIREMENTS OF PROJECT.

4. CASCADE SEPARATOR STRUCTURE SHALL MEET AASHTO HS20 LOAD RATING, ASSUMING EARTH COVER OF 0' - 2' [610], AND GROUNDWATER

ELEVATION AT, OR BELOW, THE OUTLET PIPE INVERT ELEVATION. ENGINEER OF RECORD TO CONFIRM ACTUAL GROUNDWATER ELEVATION.

CASTINGS SHALL MEET AASHTO M306 AND BE CAST WITH THE CONTECH LOGO.

5. CASCADE SEPARATOR STRUCTURE SHALL BE PRECAST CONCRETE CONFORMING TO ASTM C478 AND AASHTO LOAD FACTOR DESIGN

METHOD.

6. ALTERNATE UNITS ARE SHOWN IN MILLIMETERS [mm ].

INSTALLATION NOTES

A. ANY SUB-BASE, BACKFILL DEPTH, AND/OR ANTI-FLOTATION PROVISIONS ARE SITE-SPECIFIC DESIGN CONSIDERATIONS AND SHALL BE

SPECIFIED BY ENGINEER OF RECORD.

B. CONTRACTOR TO PROVIDE EQUIPMENT WITH SUFFICIENT LIFTING AND REACH CAPACITY TO LIFT AND SET THE CASCADE SEPARATOR

MANHOLE STRUCTURE.

C. CONTRACTOR TO INSTALL JOINT SEALANT BETWEEN ALL STRUCTURE SECTIONS AND ASSEMBLE STRUCTURE.

D. CONTRACTOR TO PROVIDE, INSTALL, AND GROUT INLET AND OUTLET PIPE(S). MATCH PIPE INVERTS WITH ELEVATIONS SHOWN. ALL PIPE

CENTERLINES TO MATCH PIPE OPENING CENTERLINES.

E. CONTRACTOR TO TAKE APPROPRIATE MEASURES TO ASSURE UNIT IS WATER TIGHT, HOLDING WATER TO FLOWLINE INVERT MINIMUM. IT IS

SUGGESTED THAT ALL JOINTS BELOW PIPE INVERTS ARE GROUTED.

SITE SPECIFIC

DATA REQUIREMENTS

STRUCTURE ID

WATER QUALITY FLOW RATE (cfs [L/s])

PEAK FLOW RATE (cfs [L/s])

RETURN PERIOD OF PEAK FLOW (yrs)

RIM ELEVATION

PIPE DATA: INVERT MATERIAL DIAMETER

INLET PIPE 1

INLET PIPE 2

OUTLET PIPE

NOTES / SPECIAL REQUIREMENTS: