Add No 1 Compl 0208-0111 241001.pdf

SOUTHEAST MACOMB SANITARY DISTRICT ADDENDUM NO. 1

JEFFERSON RELIEF SEWER, ST. CLAIR SHORES, MICHIGAN 00 91 13

ADDENDUM #1

Date of Issuance: October 2, 2024

SOUTHEAST MACOMB SANITARY DISTRICT

JEFFERSON RELIEF SEWER

In St. Clair Shores, Michigan

To all prospective bidders and others concerned:

YOU ARE HEREBY ADVISED THAT the Contract Documents for the above referenced Project are revised in the following particulars.

This Addendum amends or supplements select provisions in the Contract Documents. All provisions which are not so amended or supplemented shall remain in full force and effect.

Terms used herein shall have the same meanings as those used int the Agreement, General Conditions or Supplementary Conditions. The following terms and conditions shall be part of the Agreement as if stated therein.

This Addendum is hereby incorporated into the original Contract Documents for the bidding referred to above and is considered as binding as though originally appearing therein. Receipt of this Addendum must be noted in the place provided on the Bid Form page 00 41 43 – 2.

Items included in this addendum are hereby added to the Contract Documents.

TABLE OF CONTENTS

These Items Include: Number of Pages (Not including dividers)

1. Table of Contents

2. Pre-bid Meeting, held on September 23, 2024 Attachment: Attendees List ........................................................................................... 1-1 Attachment: Presentation Slides ................................................................................ 1-76

3. Changes to Specifications ............................................................................................ 1-2

4. Questions and Answers .................................................................................................. 1-3

NOTE: It is the Bid Document recipient’s responsibility to confirm that all pages of this package have been received. In the event that pages are missing, please contact AEW for further assistance.

ADDENDUM No. 1

SOUTHEAST MACOMB SANITARY DISTRICT

JEFFERSON RELIEF SEWER

2. Pre-bid Meeting held on September 23, 2024

Attachments:

- Attendees List

- Presentation Slides

First Name Last Name Email Organization Phone Registration Time Approval Status Questions & Comments

Louis Urban louisurban@ymail.com AEW (586) 855-9708 9/23/2024 7:54 approved

Amy Webster awebster@midwestmole.com Midwest Mole, Inc. 317-545-1335 9/23/2024 9:11 approved

Jason Miller jason@midwestmole.com Midwest Mole, Inc. 317-545-1335 9/23/2024 9:14 approved

Andy Servi aservi@michels.us Michels Trenchless Inc 920-579-6984 9/23/2024 9:32 approved

Aaron Carr Aaronc@LDAgostini.com L. D'Agostini and Sons Inc. 906-371-0169 9/23/2024 9:46 approved

Mark Roeske mark@pamarenterprises.com Pamar Enterprises 586-651-7334 9/23/2024 9:47 approved

Tim Benson timb@superexcavators.com Super Excavators, Inc. 262-252-3200 9/23/2024 9:52 approved

Rod Shoulders rshoulders@jaydee.us Jay Dee Contractors 734 591-3400 9/23/2024 9:53 approved

Michael Mancini mmancini@dvmutilities.com DVM Utilities 248-249-4671 9/23/2024 9:53 approved

Chris Frayer cfrayer@aewinc.com AEW 248-766-3103 9/23/2024 9:54 approved

Vincent Astorino vincent.astorino@macombgov.org MCPWO (586) 615-2436 9/23/2024 9:55 approved

Phil Backers pbackers@jaydee.us Jay Dee Contractors, Inc. (734) 591-3400 9/23/2024 9:55 approved

Kevin Anderson kanderson@z-contractors.com Z Contractors Inc. (586) 745-4534 9/23/2024 9:56 approved

Charles Roarty croarty@nthconsultants.com NTH Consultants (313) 237-3936 9/23/2024 9:56 approved

Kevin Macklin kevin.macklin@mersino.com Mersino (810) 662-8669 9/23/2024 9:57 approved

Sabreena Loken sloken@michels.us Michels Trenchless, Inc. 920.924.4300 9/23/2024 9:57 approved

Curtis Rozelle crozelle@jaydee.us Jay Dee Contractors, Inc. 734-591-3400 9/23/2024 9:58 approved

John Balogh Concretepipe@yahoo.com Ncpi (734) 558-5908 9/23/2024 9:58 approved

Jim Black jiblack@michels.us Michels Construction (920) 924-4300 9/23/2024 9:58 approved

Tim Backers tbackers@jaydee.us Jay Dee (313) 304-2958 9/23/2024 9:58 approved

Carl Pitzer cpitzer@thompsonpipegroup.com Thompson Pipe Group (971) 227-3920 9/23/2024 9:59 approved

Maria Sedki mesedki@fishbeck.com Fishbeck 248-324-1228 9/23/2024 9:59 approved

Christopher Kokesh ckokesh@nthconsultants.com NTH (206) 963-4225 9/23/2024 9:59 approved

Pete Schraufnagel pete@superexcavators.com Super Excavators (414) 491-5655 9/23/2024 10:00 approved

John DiPonio jtdiponio@jaydee.us Jay Dee Contractors 734-591-3400 9/23/2024 10:00 approved

JAMES UNDICELLI JUNDICELLI@JAYDEE.US JAY DEE CONTRACTORS (216) 870-6745 9/23/2024 10:03 approved

Caitlynn Morris caitlynn.morris@mersino.com Mersino Dewatering (810) 280-4377 9/23/2024 10:03 approved

Dennis Oszust doszust@ric-man.com Ric-Man Construction, Inc. (734) 892-7636 9/23/2024 10:03 approved

Patrick Dunigan patrick@duniganbros.com Dunigan Bros. Inc (517) 416-9064 9/23/2024 10:10 approved

Cameron Carruthers cameronc@duniganbros.com Dunigan Brothers (989) 965-0854 9/23/2024 10:10 approved

Josh West josh.west@northstartrenchless.com NorthStar Trenchless 320-293-1812 9/23/2024 10:14 approved

Gino DAgostini gdagostini@ric-man.com Ric-Man Construction, Inc. 586-739-5210 9/23/2024 10:27 approved

Pre Bid Attendance List

SOUTHEAST MACOMB

SANITARY DISTRICT

JEFFERSON RELIEF SEWER

PRE-BID MEETING

September 23, 2024

10:00 AM

Project Team Project Background Funding Flow Control Proposed Project:

• Overview

• Phasing

• Project Components

• Project Phasing Walk Through Overall Sequence Measurement & Payment Traffic Control

• Business Access Utility Coordination Questions

Agenda

Design TeamOwner

Project Stakeholders

Project Team

The Southeastern Macomb County system includes

• Southeast Macomb Sanitary District (SEMSD)

• Eight and One-Half Mile Relief Drain Drainage District (8MRDDD)

• Southeast Macomb County Wastewater Disposal District System

(SEMCWDDS)

• Martin Sanitary Diversion Drainage District (MSDDD).

SEMSD receives wastewater from:

• Eastpointe

• Roseville

• St. Clair Shores directly

• 3 other districts

District Facilities Include:

• Martin Drain Retention Basin

• Chapaton Retention Basin

Project Background

Funding Sources

• Macomb County ARPA Funds

• State of Michigan ARP Earmark Grant

• Federal ARP Earmark Grant

Funding Requirements

• Davis Bacon Wage Rates

• Build America, Buy America

• DBE – good faith effort

Funding

Existing Conveyance Pipes:

• Upstream of the Martin RTB, dual 48” pipes convey flow

• Downstream of the Chapaton RTB, 60” and 72” pipes convey flow

• From Martin to Chapaton, only a single 60” pipe conveys flow – the existing Jefferson Interceptor Proposed Jefferson Relief Sewer:

• Project will complete the dual pipe system for conveyance of flow between the RTB’s

• Proposed 60” Relief Sewer – 9 Mile Road to Rio Vista Need for Project:

• Significant hydraulic restriction currently within the Jefferson

Interceptor.

• Higher risk of backups on North End of Jefferson due to the restriction.

• Increased CSO’s due to the lack of capacity downstream of the

Martin RTB.

• Martin RTB e. coli numbers are approximately 6X higher than the

Chapaton RTB.

Proposed Project

Jefferson Interceptor Relief Sewer

Flow Control SECTION 01 57 24 - Coordinate, Coordinate, Coordinate

• Due to the complicated nature of this system, the Contractor is required to coordinate with the system operators for any construction operation that will require flow control in the system.

• Under no circumstances is the contractor to perform any operations that involve connections to the lateral sewers or interceptors, or work in the existing interceptor system under wet weather or surcharge conditions.

• Construction will require vigilant coordination of flow control.

Coordination is required to store and release sewage so that connections to the system can be made in a safe environment.

• During construction activities that involve any connection to the existing system or work inside the Jefferson Interceptor, the Contractor will coordinate operation of the facilities to safely store sewage during dry weather conditions.

Project Overview

Phasing

Project Components

Lateral Raising

Launching /

Receiving

Lateral Sewer Connections

NOTE:

Contractor is required to measure the level in the upstream and downstream risers for each siphon and clean the siphon if the upstream water level is higher than the downstream water level

Phase 1 – Nine Mile to Stephens

Nine Mile Road

Existing / Removals Proposed Sewer

Nine Mile Road – Sanitary Chamber 1

Harper Lake

Existing / Removals Proposed

Laukel

Ridgeway

Stephens Storm Relocation

Existing / Removals Proposed Storm Relocation

Stephens Sanitary Lateral Relocation

Existing / Removals Proposed Lateral Relocation

Stephens Launching / Receiving

Proposed Tunnel Launching / Receiving Shaft

Phase 2 –Stephens to Downing

Blackburn Storm Relocation

Existing / Removals Proposed Storm Relocation

Existing / Removals Proposed Lateral Sewer Connection

Blackburn Lateral Sewer Connection

Downing Storm Relocation

Existing / Removals Proposed Storm Sewer Relocation

Downing Lateral & Launch/ Receive

Existing / Removals Proposed Launching / Receiving

Phase 3 – Downing to Fresard

Fresard

Fresard

Tunnel Launching/ Receiving

Phase 4 – Fresard to Stephens Relief Drain

Trombly

Existing / Removals Proposed Lateral Relocation

Phase 4A – Stephens Relief Drain Crossing

Existing / Removals Proposed Jack and Bore Stephens Relief

Stephens Relief Drain – Sanitary Chamber 8

Stephens Relief Drain – Sanitary Chamber 9

Phase 5 – Stephens Relief Drain to Revere

Kramer

Revere

Phase 6 – Revere to Statler

Lange

10 Mile Road

Rosemary

Maple

Rosemary & Maple Ingress / Egress

Benjamin

Statler

Phase 7 – Statler to Rio Vista

Madison and Lakeland

Madison Lakeland

Bon Brae Ingress Egress

Bon Brae Water Main Relocation

Existing / Removals Proposed Water Main Relocation

8” Water Main may be relocated as pre-work

Bon Brae 8” Water Main shall remain connected to Jefferson 20” Water Main at all times.

20” Water Main will be remain out of service until TERS is removed

Work in the intersection may not be performed before Bon Brae/ B Street Ingress Egress is established, including Special Business Signs

Martin Flushing System Abandon

Bon Brae

Bon Brae – Sanitary Chamber 16

Rio Vista

Existing / Removals Proposed Receiving

Rio Vista – Sanitary Chamber 17

Phase 7A – Martin Regulator

Actuator was purchased by SEMSD. Contractor to install

Martin Regulator work to take place before Traffic Control Stage 4

See Plan Sheets MR1 – MR4

Submittals Townhall Meeting Mobilization Field Office Traffic Control – Sheets T1 – T15

• Follow the Staging or Submit your Own

• Temporary Lane Closures, Etc., during Low Flow, Low Traffic Volume – MDOT Typicals SESC Measures Phasing – Sheet G2 Start at 9 Mile Road and Proceed North

• All Pre Work N of 10 Mile Must Be Complete

Before Traffic Control Stage 4 Daily Siphon Monitoring Flow Control and Management

Pre Work

• Martin Regulator – Sheets MR1 – MR4

• Martin Flushing System Abandon

• Lateral Raising o Harper Lake o Stephens o Fresard o Trombly o Kramer o Benjamin

• Storm Sewer Relocation o Stephens o Blackburn o Downing

• Ingress / Egress

• Shore Point Water Service

• Final Cleanup and Restoration

Overall Sequence

Section 01 22 00 – READ THIS SECTION!!

Many Items based on MDOT 2020 Standard Specifications for Construction – follow the QR Code or https://www.michigan.gov/mdot/-/media/Project/Websites/MDOT/Business/Construction/Standard-Specifications-Construction/2020-Standard-Specifications- Construction.pdf

Measurement & Payment

Item 1 – Mobilization, Max $1,500,000

• Includes Demobilization

• Includes Project Cleanup

Item 2 – Maintenance of Traffic, Max (2.5%)

• Lump Sum for T1 – T15 and TS1 – TS 4

• Item 3 - Sign, Type B, Temp Prismatic, Special, Modified - only for Special Business Signs which are not included in

Lump Sum

• If Contractor’s approach is different than laid out on the plans – submit for review and approval

Item 15 – Pavt, Clay Brick Pavers, Rem Item 16 – Sidewalk, Clay Brick Pavers, Rem, Salv Item 62 – Sidewalk, Clay Brick Pavers, Reinstall

• Brick Pavers in the road are not being replaced, only sidewalk https://www.michigan.gov/mdot/-/media/Project/Websites/MDOT/Business/Construction/Standard-Specifications-Construction/2020-Standard-Specifications-Construction.pdf

Measurement & Payment Item 18 – Water Main, Rem

• Abandoned water main exists along the project alignment and is expected to be encountered

• Also covers removal of water mains that are called out for removal and replacement (9 Mile, Bon Brae)

Item 19 – Abandon Martin Flushing System, Complete

• From the Rio Vista Flushing Line Intake Structure to the Martin Retention Treatment Basin

• Includes plugging the line on Rio Vista and flow fill of the forcemain, wet well, 10 Mile Drain intake structure, and connected 24 inch pipe

Item 34 – Lateral Sewer Connection, Complete

• Includes everything necessary to do this work, except pavement, sidewalk, curb, brick, etc removals and replacement paid as other items.

• Includes TERS design, installation & removal, siphon, manhole, cover, flow control, monitoring, sewer connection, bulkhead in Jefferson Interceptor, flow fill, backfill, etc.

• If it is necessary to construct the Lateral Sewer Connection and not called out as a separate pay item, it is included.

Item 35 – Tunnel Launching / Receiving Shaft, Complete

• Includes everything necessary to do this work, except pavement, sidewalk, curb, brick, etc removals and replacement paid as other items.

• Includes TERS design, installation & removal, excavation, dewateringsiphon, manhole, cover, flow control, monitoring, sewer connection, bulkhead in Jefferson Interceptor, flow fill, backfill, etc.

• If it is necessary to construct the Tunnel Launching / Receiving Shaft and not called out as a separate pay item, it is included.

Items 36-40 – Sanitary Chamber _, Complete

• Includes everything necessary to do this work, except pavement, sidewalk, curb, brick, etc removals and replacement paid as other items.

• Includes TERS design, installation & removal, dewatering, excavation, shop drawings, concrete, forms, rebar, manhole, cover, flow control, monitoring, sewer connection, bulkhead in Jefferson Interceptor, flow fill, backfill, etc.

• If it is necessary to construct the Chamber and not called out as a separate pay item, it is included.

Item 41 – Martin Regulator Structure Improvements, Complete

• Includes everything necessary to do this work, Refer to Sheets MR1 – MR4

Item 42 – 24 inch Vent and Luminaire, Complete

• At Chambers 8 and 17 as shown on plans

• Includes everything necessary to do this work except pavement, sidewalk, curb, brick, etc removals and replacement paid as other items.

Item 47 – Stephens Relief Drain Dewatering Allowance, Complete

• Project team has contacted Doetsch Environmental Services to perform dewatering of the Stephens Relief Drain prior to jacking and boring operations.

• Contractor is responsible for coordinating at least 30 days in advance with Doetsch staff to perform this work.

Item 48 – Sanitary Sewer, RCP, 60 inch, Tunneling

• Bid documents allow for other methods of tunneling, but project was designed with microtunneling in mind. IF alternate allowable means and methods are proposed, Contractor is directed to the substitution process outlined in the bid documents.

• Payment is from inside wall of chambers to centerline of manholes along the centerline of the pipe.

Item 54 – Temporary Hard Surface

• Since it is difficult to predict the weather conditions this far in advance of the project, two pavement sections are acceptable for restoration of road areas – one concrete and one HMA

• While called “Temporary” for purposes of this project, it is permanent. Jefferson is slated for reconstruction starting in 2027, therefore to the design team this is a temporary section.

• Payment is per Square Yard for the HMA or Concrete and Aggregate Base

Item 64 – Geotechnical Instrumentation – Inclinometer Item 65 – Geotechnical Instrumentation – Telltale

• NTH Consultants will be monitoring for impacts of construction activities on other infrastructure in proximity to the project.

• Contractor’s responsibility is to install inclinometers and telltales at the locations shown on the plans and in accordance with bid documents.

• Five Stages of Traffic Control

• Sheets T1 – T15 & TS1-TS4

• Contractor may submit alternate Traffic

Control Plan for approval

• Anticipated that Traffic Control will expand and contract as work is completed as project proceeds north

• North of 10 Mile Road will be One Way traffic

• Pre-work north of 10 Mile Road that will impact the easterly NB lane must take place before Stage 4

• Pre-work will follow MDOT Typicals and occur during low traffic volume and low sewer flow

• Rosemary, Maple and Bon Brae are dead end streets. Ingress/ Egress must be established and fully signed before work can begin in these intersections

• Lump Sum item except Special Business Signs directing traffic to businesses, Rosemary Street, Maple Street, and Bon Brae and associated businesses is a separate pay item

Traffic Control

Consumers Energy – Gas Main

• Gas main will be relocated at the following locations, starting at 9 Mile and proceeding north:

o Nine Mile Road o Ridgeway o Fresard o Stephens Drain o Rio Vista

DTE Energy – Overhead Wires

• DTE will relocate the overhead the following locations:

• Stephens – set temporary poles on

E side of Jefferson and relocate to crossing S of Stephens during construction

• Rio Vista – permanent relocation to crossing N of Bon Brae

DTE Energy - Underground

• Ridgeway – DTE to relocate existing conduit bank AT&T - Underground

• Forced migration of copper to fiber at

Rosemary. Conduit should be empty before Contractor arrives

Utility Coordination

Geotechnical Conditions

Plan Sheets

• G4 – Construction Notes

• ER1 – Temporary Earth Retention General Requirements

• GT1 through GT6 – Geotechnical Instrumentation

• TB1 through TB2 – Test Boring Location Plan and Soil Profile

Reports – Provided in Appendices Link

• Preliminary Environmental Corridor Study, NTH, 1/18/24

• Subsurface Environmental Investigation, NTH 1/23/24

• Geotechnical Data Report, NTH, 12/15/23, revised 1/24/24

• Geotechnical Interpretative Report, NTH 3/1/24

• Environmental Construction Management Plan, NTH 06/17/24

• Geotechnical Baseline Report, NTH, 09/06/2024

Geotechnical

Geotechnical

Questions?

Are there DBE Goals on this project? It said something about doing a Good Faith Effort? If so, will this be submitted with bid?

As stated in the Disadvantaged Business Enterprise Requirements, “Contractor to employ the six good faith efforts described in 40 CFR Part 33, Section 33.301 in procurement of goods and services.”

It states on the invite on bidnet in General Requirements that we need a Contractor License …. It states it is required. In all of the specs I just see we need a authority to do business in MI.

Authority to do business in Michigan is the requirement

I cannot find the Exhibit A OCIP Terms that they are talking about in the Supplemental Conditions Insurance area.

They say they are attached, and we need to go by these.

The Supplemental General Conditions delete references to Exhibit A in the General Conditions, therefore it is not required.

Questions Received

Here is a link to that section of the Code of Federal Regulations https://www.ecfr.gov/current/title-40/chapter-I/subchapter-B/part-33

Questions Received

Does this project require a 2-year maintenance bond?

Yes, per Section 01 70 00, Article 1.07 Warranties & Guarantees

There are 2 pages of soil boring in plan sheets and there is some info in the Public Shared Docs I downloaded from link. Is this the only Geotech there are for this project?

Geotech consists of the information provided on Sheets G4, ER1, GT1 through GT6, and TB1 through TB2 of the Plans, and the following reports in the Public Shared Documents:

• Preliminary Environmental Corridor Study, NTH, 1/18/24

• Subsurface Environmental Investigation, NTH 1/23/24

• Geotechnical Data Report, NTH, 12/15/23, revised 1/24/24

• Geotechnical Interpretative Report, NTH 3/1/24

• Environmental Construction Management Plan, NTH 06/17/24

• Geotechnical Baseline Report, NTH, 09/06/2024

This is the only Geotech being provided for this project.

Wondering if subcontractors are required to submit a bidders qualification statement with our quote by the time of bid?

No, the prime Contractor is required to submit the Proposed Subcontractors Form found in section 00 43 36 with the Bid and required attachments.

Item 1.01 of specification section 31 71 19 states, “the CONTRACTOR shall conduct all work necessary to complete the bored tunnel with the use of pressurized face tunnel boring machine (TBM).” Is the intent of this statement to mandate use of an earth pressure balance (EPB) TBM or will the Owner allow the use of non-pressurized face TBM with appropriate face control?

No, this section was not intended to mandate the type of TBM. The Owner will allow the use of non-pressurized face TBM with appropriate face control or other tunneling means and methods proposed by the Contractor.

Item 1.05G of specification section 31 71 19 states, “The minimum allowable bore diameter is 12 feet and the maximum bore diameter is 13 feet.” Will a smaller bore diameter be allowed, provided there is adequate clearance for installation of the 60” RCP final lining?

Yes. This section should read, “The bore diameter shall be minimized to as small as possible to allow adequate clearance for the installation of the 60 inch RCP final lining

Item 2.01 A of specification section 31 23 00 states, “The upper 15 feet of excavation shall be assumed contaminated and shall be removed for disposal at a licensed landfill facility in accordance with the requirements of the landfill, including, but not limited to, waste manifest, sampling, and waste characterization analysis,” however, section 5.2 of the GBR states “Near surface soil (especially) urban fill material should be considered contaminated and managed appropriately unless proved otherwise through analytical testing.”

Please clarify the intended baseline for soil contamination.

The baseline for soil contamination is that all fill material above the native clay is contaminated. Please refer to the Environmental Construction Management Plan, Paragraph 4.3 - Preventing Exacerbation of Contamination for detailed direction regarding analytical testing and disposal options for excavated soil.

Responses to questions received and a PDF of this presentation will be formally issued as

Addendum #1 around

Tuesday, October 1, 2024

3. Changes to Specifications

Attachments:

Item 3 – Changes to Specifications

Item Number

Section Number

Page Number(s)

Article Number(s)

Description of Change

S-001 31 23 00 31 23 00-3 2.01

EXCAVATED

MATERIAL

Revision to Paragraph 2.01.A

Delete Paragraph 2.01.A in its entirety and replace with the following:

“A. The upper fill deposits, up to 15 feet of excavation, shall be assumed contaminated and shall be removed for disposal at a licensed landfill facility in accordance with the requirements of the landfill, including but not limited to, waste manifest, sampling, and waste characterization analysis. Refer to the Environmental Construction Management Plan, Paragraph 4.3 – Preventing Exacerbation of Contamination, for detailed direction regarding analytical testing and disposal options for excavated soil.”

S-002 31 71 19 31 71 19-1 1.01

SUMMARY

Revision to Paragraph 1.01.B

Delete the words “pressurized face” from the 1st sentence

S-003 31 71 19 31 71 19-2 1.05 QUALITY

ASSURANCE

Revision to Paragraph 1.05.G

Delete the second sentence in its entirety.

S-004 33 26 10 33 26 10-2 1.03

REFERENCE

STANDARDS

Addition of Paragraph 1.03.P

Add the following paragraph immediately after Paragraph 1.03.O:

“P. ASTM C 595 Standard Specification for Blended Hydraulic Cements.”

S-005 33 26 10 33 26 10-3 1.05

SUBMITTALS

Revision to Paragraph 1.05.G

Delete the 2nd sentence in its entirety and replace with the following:

“Provide laboratory test results for the materials to show that external joint bands conform to ASTM A36, cement conforms to ASTM C150 or ASTM C595, aggregates conform to ASTM C33, pozzolan conforms to ASTM C618, and that reinforcing steel conforms to ASTM A82, A185, A496, and A615 as applicable.”

S-006 33 26 10 33 26 10-5 2.01 DESIGN Revision to Paragraph 2.01.E

Delete the 1st sentence in its entirety and replace with the following:

“E. The compressive strength of the concrete used in the manufacture of the pipe shall be at least 6,000 psi at 28 days.”

S-007 33 26 10 33 26 10-5 2.02

MATERIALS

Addition to Paragraph 2.02.A

Add the following words to the end of the first sentence:

“or ASTM C595.”

S-008 31 09 13 31 09 13-1 1.01

SUMMARY

Revision to Paragraph 1.01.A

Delete the words “arrange for, install, and” from the 1st sentence.

S-009 31 09 13 31 09 13-2 1.01

SUMMARY

Revision to Paragraph 1.01.F

Delete the words “and reinstalled by the Engineer” from the last sentence.

S-010 31 09 13 31 09 13-2 1.02

DESCRIPTION

Revision to Paragraph 1.02.A.1

Delete the words “arrange for, install and” from the 1st sentence.

S-011 31 09 13 31 09 13-2 1.02

DESCRIPTION

Revision to Paragraph 1.02.B.3

Replace the word “Engineer” with “Contractor” in the 2nd sentence.

S-012 31 09 13 31 09 13-3 1.02

DESCRIPTION

Revision to Paragraph 1.02.B.9

Delete Paragraph 1.02.B.9 in its entirety.

S-013 31 09 13 31 09 13-4 3.01

SUMMARY

Revisions to Paragraph 3.01.A

Delete the words “in the excavation and will include construction of a temporary working platform at each instrument and provide a ladder or stairway, or other approved method to each instrument” from the 1st sentence.

Delete the 2nd sentence in its entirety.

4. Questions and Answers

Item 4 – Questions and Answers

The following questions were submitted and are responded to as follows:

1. QUESTION: Are there DBE Goals on this project? It said something about doing a Good Faith Effort? If so, will this be submitted with bid?

RESPONSE: As stated in the Disadvantaged Business Enterprise Requirements, “Contractor to employ the six good faith efforts described in 40 CFR Part 33, Section 33.301 in procurement of goods and services.”

Here is a link to that section of the Code of Federal Regulations https://www.ecfr.gov/current/title-40/chapter-I/subchapter-B/part-33

2. QUESTION: It states on the invite on bidnet in General Requirements that we need a Contractor License…it states it is required. In all of the specs I just see we need a authority to do business in MI.

RESPONSE: Authority to do business in Michigan is the requirement.

3. QUESTION: I cannot find the Exhibit A OCIP Terms that they are talking about in the Supplemental Conditions Insurance area. They say they are attached, and we need to go by these.

RESPONSE: The Supplemental Conditions delete references to Exhibit A in the General Conditions, therefore it is not required.

4. QUESTION: Does this project require a 2-year maintenance bond?

RESPONSE: Yes, per Section 01 70 00, Article 1.07 Warranties & Guarantees.

5. QUESTION: There are 2 pages of soil boring in plan sheets and there is some info in the Public Shared Docs I downloaded from link. Is this the only Geotech there are for this project?

RESPONSE: Geotech consists of the information provided on Sheets G4, ER1, GT1 through GT6, and TB1 through TB2 of the Plans, and the following five reports in the Public Shared Documents:

• Preliminary Environmental Corridor Study, NTH, 01/18/2024

• Subsurface Environmental Investigation, NTH, 01/23/2024

• Geotechnical Interpretative Report, NTH, 03/01/2024

• Environmental Construction Management Plan, NTH, Revised 9/30/2024 (attached)

• Geotechnical Baseline Report, NTH, 09/06/2024

All available Geotech has been provided.

6. QUESTION: Wondering if subcontractors are required to submit a bidders qualification statement with our quote by the time of bid?

RESPONSE: No, the prime Contractor is required to submit the Proposed Subcontractors Form found in section 00 43 46 with the bide and required attachments.

7. QUESTION: Item 1.01.B of specification section 31 71 19 states “the CONTRACTOR shall conduct all work necessary to complete the bored tunnel with the use of pressurized face tunnel boring machine (TBM)”. Is the intent of this statement to mandate use of an earth pressure balance (EPB) TBM or will the Owner allow use of a non-pressurized face TBM with appropriate face control?

RESPONSE: No, this section was not intended to mandate the type of TBM. The Owner will allow the use of non-pressurized face TBM with appropriate face control or other tunneling means and methods proposed by the Contractor.

8. QUESTION: Item 1.05.G of specification section 31 71 19 states “The minimum allowable bore diameter is 12 feet and the maximum bore diameter is 13 feet.” Will a smaller bore diameter be allowed, provided there is adequate clearance for installation of the 60” RCP final lining?

RESPONSE: Yes. This section should read, “The bore diameter shall be minimized to as small as possible to allow adequate clearance for the installation of the 60 inch RCP final lining.

9. QUESTION: Item 2.01.A of specification section 31 23 00 states “The upper 15 feet of excavation shall be assumed contaminated and shall be removed for disposal at a licensed landfill facility in accordance with the requirements of the landfill, including, but not limited to, waste manifest, sampling, and waste characterization analysis” however, section 5.2 of the GBR states “Near surface soil (especially) urban fill material” should be considered contaminated and managed appropriately unless proven otherwise through analytical testing”.

Please clarify the intended baseline for soil contamination.

RESPONSE: The baseline for soil contamination is that all fill material above the native clay is contaminated. Please refer to the Environmental Construction Management Plan, Paragraph 4.3 – Preventing Exacerbation of Contamination for detailed direction regarding analytical testing and disposal options for excavated soil. The ECMP was revised September 30, 2024 and is attached to this Addendum.

10. QUESTION: 33 26 10 1.03K and 1.05G and 2.02A. We would like to request the inclusions of ASTM C595 Type IL cement in addition to the specified ASTM C150 cement. In response to international concerns with sustainability, cement manufacturers are moving forward with a plan to become carbon neutral. This plan includes steps to reduce fuel usage and emissions by converting their production to blended cements which replace 5-10% of clinker with limestone. Blended Portland cement manufactured in accordance with ASTM C595 provides a cement with properties that meet or exceed the critical properties of ASTM C150 Portland cement. With conversion of manufacture from ASTM C150 to ASTM C595 cement, supply of ASTM C150 cement is becoming virtually unavailable domestically.

RESPONSE: Please reference 3. Changes to Specifications, specifically Item #’s S-004, S-005 and S-007 of this Addendum No. 1.

11. QUESTION: Section 33 26 10 3.01B requires a minimum Class V RCP pipe. Class V pipe per ASTM C76 generally requires a concrete compressive strength of 6,000 psi. Section 33 26 10 2.01E requires 5,000 psi at 28 days. Will you please clarify?

RESPONSE: Please reference 3. Changes to Specifications, specifically Item # S-006, of this Addendum No. 1.

12. QUESTION: Section 33 30 00 2.02C states “OR approved equal”. If either an RCP or FRPM microtunneling pipe meets the project specifications, what is required to be submitted to be considered an approved equal?

RESPONSE: Please refer to Specification Section 00 72 43 Paragraph 7.05 – Or Equals.

13. QUESTION: In the Advertisement for Bids it states that “This project is subject to the Build America, Buy America Act (BABAA) requirements under Title IX of the Infrastructure Investment and Jobs Act (“IIJA”), Pub. L. 177-58. Absent an approved waiver, all iron, steel, manufactured products, and construction materials used in this project must be produced in the United States, as further outlined by the Office of Management and Budget’s Memorandum M-22-11.” Will you please clarify whether that means all components (Glass, resin, steel, cement, etc) for the microtunneling pipes also needs to be made in the US?

RESPONSE: Engineer has requested clarification from the EPA and will relay any clarification received with a future addendum.

14. QUESTION: Will the Contractor be allowed to upsize the RCP final lining?

RESPONSE: Please refer to Specification Section 00 72 43 Paragraph 7.06 Substitutes.

15 QUESTION: Will an Engineer’s Estimate be published?

RESPONSE: No.

16. QUESTION: Section 1.01.A states “The Owner or Engineer will arrange for, install, and take readings, ONLY for the instrumentation shown on the Project Plans and other instrumentation that is installed by the Owner or Engineer.” However, section 3 of specification -1 22 00 calls for 19 inclinometers (Item 64) and 16 telltales (Item 65) to be installed by the Contractor.

Please clarify if these instruments are intended to be installed by the Engineer or the Contractor.

RESPONSE: The Contractor is to install inclinometers and telltales. The Engineer will take readings. Please reference 3. Changes to Specifications, specifically Item # S-008, S-009, S- 010, S-011, S-012, and S-013, of this Addendum No. 1.

ENVIRONMENTAL CONSTRUCTION MANAGEMENT

PLAN (ECMP)

JEFFERSON RELIEF SEWER PROJECT

JEFFERSON AVENUE FROM 9 MILE TO RIO VISTA STREET

ST. CLAIR SHORES, MICHIGAN

Anderson, Eckstein & Westrick, Inc. June 17, 2024 27087 Gratiot Avenue Revised September 30, 2024 Detroit, Michigan 48204 NTH Project No. 23001697-1B

NTH

NTH Consultants, Ltd.

41780 Six Mile Rd.

Suite 200 Northville, MI 48168

NTH Consultants, Ltd.

Infrastructure Engineering 41780 Six Mile Rd., Suite 200; Northville, MI 48168 and Environmental Services Phone 248-553-6300• Fax 248-324-5179

NTH | O:\Active PROJ\23001697_SEMSD Jefferson Relief Sewer\730 - Reports\ECMP rev1\001-0617-ECMP-RPT_rev1.docx

Kyle M. Seidel, P.E. June 17, 2024 Project Manager NTH Project No. 23001697-1B Anderson, Eckstein & Westrick, Inc. Revised September 30, 2024 27087 Gratiot Avenue Detroit, Michigan 48066

RE: Environmental Construction Management Plan (ECMP) Jefferson Relief Sewer Project Jefferson Avenue from 9 Mile Road to Rio Vista Street St. Clair Shores, Michigan

Dear Mr. Seidel:

NTH Consultants, Ltd. (NTH) has prepared this ECMP or Plan for the above-referenced project.

This Plan is prepared for the use of Anderson, Eckstein & Westrick, Inc. and Southeast Macomb Sanitary District.

This ECMP provides guidelines to prevent unacceptable human exposure and exacerbation from subsurface contamination during construction and provides appropriate guidelines to entities that may come in contact with contaminated soil and/or groundwater.

We appreciate this opportunity to be of service to you. Should you have any questions or require additional information, please call us at 248-662-2741.

Sincerely, NTH Consultants, Ltd.

Cliff J. Andrews Charles J. Roarty, Jr. P.E.

Principal Professional Senior Vice President

CJA/CJR/mlk

Attachments

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TABLE OF CONTENTS

Page No.

1.0 INTRODUCTION 1

2.0 DETAILED PROJECT CORRIDOR DESCRIPTION 1

2.1 LOCATION AND DESCRIPTION 1

2.2 GENERAL VICINITY CHARACTERISTICS 1

3.0 SUMMARY OF ENVIRONMENTAL INVESTIGATIONS 1

4.0 CONSTRUCTION RESPONSE ACTIVITIES 4

4.1 PREVENTION OF ACCEPTABLE HUMAN EXPOSURE TO CONTAMINATED

SOIL AND GROUNDWATER 5

4.2 PROTECTION OF THIRD PARTIES 5

4.3 PREVENTING EXACERBATION OF CONTAMINATION 5

APPENDICES

BORING LOGS APPENDIX A

SAMPLE EXCEEDANCE PLAN

ANALYTICAL SUMMARY TABLE

LABORATORY REPORT APPENDIX B

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1.0 INTRODUCTION

NTH Consultants, Ltd. (NTH) was retained by Anderson, Eckstein & Westrick, Inc (AEW) on behalf of Southeast Macomb Sanitary District (SEMSD) to prepare this Environmental Construction Management Plan (ECMP) or Plan for the Jefferson Relief Sewer Project in St. Clair Shores, Michigan.

NTH conducted a Phase I Environmental Site Assessment (ESA) and a Subsurface Environmental Investigation (SEI) for the project. The results of soil sample analysis identified volatile organic compounds (VOCs) and heavy metals above Michigan Department of Environment, Great Lakes, and Energy (EGLE) - Part 201 generic nonresidential cleanup criteria and screening levels (GNRCC).

Due to the discovery of a polychlorinated biphenyl (PCB) spill upstream of the project site circa 2001, the Ten Mile Drain is part of a US Environmental Protection Agency (EPA) Superfund remediation effort. The Ten Mile Drain alignment, located within the project limits along Jefferson Avenue between 10 Mile Road and Bon Brae Street, is independent of and not connected to the existing Jefferson Interceptor or Relief Sewers.

This ECMP outlines the activities to be undertaken during the upcoming construction work for the project and is prepared for the use of AEW and SEMSD. If the intended use of the project corridor changes or new information regarding contaminant concentrations is identified, the information presented in this document should be reevaluated to establish appropriate response actions.

2.0 DETAILED PROJECT CORRIDOR DESCRIPTION

2.1 LOCATION AND DESCRIPTION

The project area or corridor consists of a 1.3-mile section along Jefferson Avenue from 9 Mile Road north to Rio Vista Street. The project entails construction of a 60-inch diameter relief sewer. The existing Jefferson Interceptor (60-inch storm sewer) is located along the east side of Jefferson Avenue, and a 20-inch watermain is located along the center of Jefferson Avenue.

2.2 GENERAL VICINITY CHARACTERISTICS

The adjacent sites along the project corridor are mainly used for residential and commercial purposes. The commercial uses include office buildings, restaurants, retail stores, gas stations, medical offices, a bowling alley, boat marinas, auto repair shops, hair salons, etc. The residential uses include apartment buildings, condominiums, and single-family dwellings. The adjacent developments are serviced by the municipal potable water supply, storm sewer and sanitary sewer systems, and private natural gas, electric and telecommunications utilities.

3.0 SUMMARY OF ENVIRONMENTAL INVESTIGATIONS

EPA Superfund Site In July 2001, sediment samples were collected by the Macomb County Public Works Office (MCPWO) as part of a permit application process for a proposed dredging project in the Lange and Revere Street Canals located just south of 10 Mile Road. The analytical results were submitted to the U.S. Army Corps of Engineers (USACE) and based on the elevated levels of PCBs in the sediment, the USACE notified the Michigan Department of Environmental Quality (MDEQ), now

NTH | O:\Active PROJ\23001697_SEMSD Jefferson Relief Sewer\730 - Reports\ECMP rev1\001-0617-ECMP-RPT_rev1.docx 2 known as EGLE. In December 2001, MDEQ investigated the Ten Mile Drain (TMD) system and confirmed there was an upstream source of PCB contamination in the drain. As a result of MDEQ's investigation, the MCPWO sampled and confirmed the presence of PCBs in both the Lange and Revere Street Canals and TMD system.

Several investigations and remedial actions have taken place since the discovery of PCBs. Certain areas of the TMD system have been re-contaminated. The TMD system investigation area comprised of Bon Brae Street from Little Mack to Harper, just north of Bon Brae Street to south of Lange Street and Harper to Jefferson Avenue. The investigations identified the largest concentrations of PCBs near Bon Brae Street and Harper Avenue. PCBs have been found in TMD system manholes along Jefferson Avenue.

Based on review of the most recent EPA Record of Decision and conversations with the EPA’s Project Manager, the EPA’s plan is to remediate PCBs at the TMD system to below human health and environmental risks and established the target cleanup level of 21 parts per million (ppm), which is associated with utility workers contact criteria. The EPA is not aware of any PCB contaminated backfill around the existing underground utilities along Jefferson Avenue.

The Selected Remediation identified in the 2024 Record of Decision (ROD) Alternative 5 calls for removal and replacement of manholes/vaults and piping on Harper Avenue from Lakeland Street north to Bon Brae Street and east on Bon Brae Street to about B Street. A short segment of Lakeland Street Drain will be repaired, replaced, cleaned and /or lined from Harper Street east.

Manholes and piping along Bon Brae Street from B Street to Jefferson Avenue, Jefferson Avenue to Lange and Revere outfalls, and a portion of Ten Mile Road between Lovell Street and the Lange and Revere outfall will be cleaned and power washed. The EPA Project Manager indicated the Selected Remediation will take between two to four years to design, fund, and conduct the remediation.

Preliminary Environmental Corridor Study (PECS) NTH conducted a PECS of the Project Corridor for the proposed relief sewer locations (Option 1 and Option 2 alternate pipe alignments), and the results of the study were summarized in a report (NTH Project No. 23001697-01) dated January 18, 2024. It is our understanding that Option 2 has been tentatively selected. Thus, the table below summarizes the sites of potential environmental concern (PEC) along the Option 2 pipe alignment.

Address/Location Occupant/Use PEC

23717 Jefferson Kroger #D-495 Current and former gas station with two underground storage tanks (USTs) in use. The site is reported to have subsurface contamination.

23800 Jefferson Nautical Mile Pitstop, Inc; and Mobil Current and former gas station with three USTs in use.

The site is reported to have subsurface contamination.

24005 Jefferson

Multi-tenant office building located at 24055 Jefferson

Avenue)

Sanborn maps dated 1933 and 1942 identified the site as a gasoline station with one UST (suspected to be the same site as below).

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Address/Location Occupant/Use PEC

24025 Jefferson

Multi-tenant office building located at 24055 Jefferson

Avenue)

The site was a gasoline station from 1969-1971 (suspected to be the same site as above).

24101 Jefferson Vacant land The site was a gasoline station from at least 1969 to 1988 and reported to have subsurface contamination.

24137 Jefferson Vacant land This vacant site is reported to have subsurface contamination.

24317 Jefferson Licavoli’s Villanova

Pizzeria & Ristorante

Sanborn map identifies an auto repair shop in 1933, and machine shop in 1945. Regulatory agency database report identifies a gasoline station at this site from at least 1969 to 1971.

24501 Jefferson S & K Muffler

The site was a gasoline station from at least 1969 to 1977 and is currently occupied by an auto repair shop since 1989. The site is reported to have subsurface contamination.

24535 Jefferson Doctor’s office The site was a dry cleaner from at least 1969 to 1970.

25025 Jefferson Pegasus Tavern (24935

Jefferson Avenue) The site was a gasoline station from at least 1971 to 1974.

25103 Jefferson Pat O’Brien’s restaurant Sanborn maps dated 1933 and 1942 identified the site as a gasoline station with one UST.

22385 Benjamin Unknown

This site is suspected of being the former gas station located at 25600 Jefferson. Available information indicates that the site was a gasoline station from at least 1972 to 1991, and an automotive repair shop from at least 1989 to 2002. However, the address is a parking lot that has been used a parking lot since at least 1961.

25600 Jefferson Unknown The site appears to be a former gas station.

26001 Jefferson Sisters of Bon Secours

Nursing Care Center This site is reported to have subsurface contamination.

10 Mile & Jefferson Ten Mile Drain PCBs have been identified in the storm sewer system.

Subsurface Environmental Investigation NTH conducted a SEI to evaluate the potential environmental concerns identified in the PECS with the exception of the TMD (Superfund site). The results of the study were summarized in a report (NTH Project No. 23001697-01B) dated January 23, 2024. This study included drilling 12 geoprobe soil borings, designated as GP-1 through GP-12, and the collection and analysis of soil and groundwater samples. The borings were advanced to depths of up to 13 feet. The approximate locations of the borings are depicted on the Sample Exceedance Plan in Appendix A. Subsurface conditions observed at the boring locations are presented in the Logs of Geoprobe Borings also in Appendix A.

The subsurface conditions at the boring locations were comprised of up to 8 feet of sandy and clayey fill soil. The fill soil is underlain by native clays to the explored depths, except at GP-2, where the boring was terminated at 10 feet in the fill soil (pea stone). Groundwater was encountered in GP-2 at approximate depth of 5 feet, GP-9 at approximate depth of 10 feet, and GP-12 at approximate depth of 4 feet. The soil and water samples collected during the SEI were analyzed for volatile organic compounds (VOCs), polynuclear aromatics (PNAs), the Michigan 10 metals (arsenic, NTH | O:\Active PROJ\23001697_SEMSD Jefferson Relief Sewer\730 - Reports\ECMP rev1\001-0617-ECMP-RPT_rev1.docx 4 barium, cadmium, chromium, copper, lead, mercury, selenium, silver, and zinc) and PCBs.

Laboratory data for the analyzed samples are included in Appendix B.

This study was conducted for the proposed construction of the relief sewer system, which is considered a nonresidential use. Thus, the soil and water analytical data were compared to the EGLE-established Part 201 generic nonresidential cleanup criteria (GNRCC). Specifically, the soil results were compared to the Part 201 nonresidential direct contact (DC) criteria, drinking water protection (DWP) criteria, groundwater/surface water interface protection (GSIP) criteria, soil volatilization to indoor air inhalation criteria (SVIIC), infinite source soil volatilization to ambient air criteria (VSIC), particulate soil inhalation criteria (PSIC), soil saturation concentration screening levels (SSCSL). Likewise, the results of water analysis were compared to the Part 201 nonresidential drinking water (DW) criteria, groundwater/surface water interface (GSI) criteria, groundwater volatilization to indoor air (GVIIC) criteria, water solubility (WS), and flammability and explosivity screening levels (FESL).

PCB results were compared to Part 201 nonresidential cleanup standards and Federal Toxic Substance Control Act (TSCA) Subpart D levels.

The SEI identified the following hazardous substances in the groundwater samples above the Part

201 GNRCC:

Contaminant CAS Nos. Boring No. Media Part 201 GNRCC Exceeded

Arsenic 7440-38-2

GP-2 / S-1, GP-3 / S-2,

GP-4 / S-2, GP-5 / S-2,

GP-7 / S-2, GP-8 / S-1,

and GP-9 / S-1

Soil DWP and GSIP

GP-12 / GW-1 Water NRDW and GSI

Barium 7440-39-3 GP-12 / GW-1 Water GSI Chromium, Total 7440-47-3 GP-1 S-1, GP-2 S-1, GP-3 S-2, GP-4 S2, GP-5 S-2, GP-6 S-2, GP-7 S-1, GP-7 S-2, GP-8 S-1, GP-9 S-1, GP-10 S-1, GP-11 S-1, and GP-12 S-1

Soil DWP and GSIP

Selenium 7782-49-2 GP-5 / S-2 Soil GSIP 2-Methylnaphthalene 91-57-6 GP-6 Soil GSIP

Naphthalene 91-20-3 GP-6 Soil GSIP

The soil and water sample information and analytical data along with applicable Part 201 GNRCC are summarized in tables in Appendix A.

4.0 CONSTRUCTION RESPONSE ACTIVITIES

Preliminary plans call for the tunnel invert to be 25 feet deep. There will be four mining/turning shafts (20 ft by 30 ft), one shaft on each side of the Stephens drain to install smaller diameter pipes under the drain (20 ft by 20 ft), ten street lateral bypass shafts (20 ft diameter), and a junction chamber shaft at either end (20 ft by 20 ft). A total of 3 lateral bypass shafts and one junction chamber shaft will be located in proximity to the TMD.

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4.1 PREVENTION OF ACCEPTABLE HUMAN EXPOSURE TO CONTAMINATED SOIL AND

GROUNDWATER

Soil and groundwater are not impacted at levels that may pose a threat to human health during nonresidential construction activities; thus, no activities need to be taken to mitigate/prevent unacceptable exposure.

4.2 PROTECTION OF THIRD PARTIES

Soil and groundwater are not known to be impacted at levels that may pose a threat to contractors during nonresidential construction activities; however, the following guidelines are developed for future construction entailing below grade excavations:

• During the proposed construction work, notifications to third parties (i.e., construction and subsurface utility workers) will be managed by the project contractor, who will maintain site security for the duration of the activities.

• A copy of this Plan should be provided to project contractors who may have the potential to be exposed to contaminated soil and groundwater during construction activities. Based on the information contained in this Plan, each contractor shall be responsible for developing their own site-specific Health and Safety Plan in accordance with appropriate regulatory requirements including the Occupational Safety and Health Act (OSHA) and Michigan OSHA (MIOSHA).

• The construction or work area shall be secured against unauthorized access by installing a fence and/or posting signs restricting access to authorized personnel only.

• During construction activities that disturb impervious surfaces, precautions shall be taken to reduce to the extent possible potential infiltration of precipitation that may cause migration of soluble contaminants from subsurface soils into the adjacent surface water.

4.3 PREVENTING EXACERBATION OF CONTAMINATION

The construction controls described below, will not cause exacerbation. That is, they will not cause migration of contamination beyond the boundaries of the Project Corridor or lead to an increase in response activity costs.

• Project contractors shall develop a fugitive dust control plan, which shall include measures to prevent airborne dispersion and off-site migration of soil particulates.