Agenda packet — San Carlos City Council, May 8, 2023 (part 1 of 2)

CITY OF SAN CARLOS
City Council/Successor Agency to the
Redevelopment Agency/Housing Authority
Regular Meeting
May 08, 2023 7:00 PM
Council Chambers, City Hall
600 Elm Street, San Carlos, CA 94070
www.cityofsancarlos.org
AGENDA
This meeting will be conducted both inperson at City Hall and virtually via Zoom. Members of the public will have the option to observe the meeting and address the City Council as outlined below.

InPerson Participation:

Location. City Hall – 600 Elm Street, Council Chambers.

Masks are no longer required, but are still recommended by the California Department of Health. To maintain public health and safety, please do not attend in person if you are experiencing respiratory symptoms (e.g. cough, runny nose, and/or sore throat).

Provide Public Comment. To address the City Council on any item on the posted agenda, fill out a Request to Speak Form located in the back of the Council Chambers and submit it to the City Clerk; or, you may raise your hand when the Mayor calls for public comments.

Remote Participation :

Observe via:
Zoom. https://us02web.zoom.us/j/88256140939; or call 16699009128 and enter the Meeting ID #: 882 5614 0939
Meeting Webportal . www.cityofsancarlos.org/agenda Local TV. Comcast Channel 27 and AT&T Uverse Channel 99 Provide Public Comment. If you plan to make a public comment on any item on the posted agenda, please observe the meeting via Zoom (see above access information), and during the public comment period for the agenda item you wish to address, use the “raise hand” feature. If joining Zoom by phone, press *9 to “raise hand”.

Councilmembers may participate in this meeting remotely as authorized by Assembly Bill 2449.

MAYOR: Adam Rak
COUNCIL: Ronald Collins, John Dugan, Sara McDowell, Pranita Venkatesh

1. CALL TO ORDER

2. ASSEMBLY BILL 2449 TELECONFERENCE REQUESTS

3. PLEDGE OF ALLEGIANCE

4. CHANGES TO THE ORDER OF THE AGENDA

5. REPORT FROM CLOSED SESSION

6. PRESENTATIONS
a. Present Proclamations Recognizing the San Carlos Trash to Art Contest Winners. b. Present a Proclamation Recognizing May 2023 as Mental Health Month. c. Present a Proclamation Recognizing May 2023 as Asian American and Pacific Islander Heritage Month.

7. COUNCIL COMMUNICATIONS AND ANNOUNCEMENTS
Council Communications and Announcements are brief items from members of the City Council regarding upcoming events in the community and correspondence that they have received. They are informational in nature and no action will be taken on these items at this meeting.

8. PUBLIC COMMENT
Persons wishing to address the City Council on matters NOT on the posted agenda may do so.

Each speaker is limited to two minutes. If there are more than five individuals wishing to speak during public comment, the Mayor may choose to allow the first five speakers to speak during this time, and the balance of the Public Comment speakers will be called upon at the end of the Council Meeting.

If the item you are speaking on is not listed on the agenda, please be advised that the City Council may briefly respond to statements made or questions posed as allowed under the Brown Act (Government Code Section 54954.2). The City Council's general policy is to refer items to staff for attention, or have a matter placed on a future City Council agenda for a more comprehensive action or report and formal public discussion and input at that time.

9. CONSENT CALENDAR
a. Motion to Waive Reading of All Ordinances.
b. Approve the March 27, 2023 City Council Regular Meeting Minutes. c. Adopt a Resolution Approving the 2023 Annual Sewer Rehabilitation Project C9617 Plans and Specifications and Authorizing a Call for Bids. d. Adopt a Resolution Approving the List of Proposed Streets Scheduled to be Resurfaced as Part of the Annual Pavement Rehabilitation Project in Fiscal Year 202324 Funded by Senate Bill 1, the Road Repair and Accountability Act. e. Adopt a Resolution Authorizing the City Manager to Execute an Addendum to the Professional Services Agreement with Arc Strategies LLC for Government Relations and Legislative Advocacy Services for an Additional Fifteen Months. f. Adopt a Resolution Accepting the 2022 OnCall Sewer Replacement Project C1702; and Authorizing the Public Works Director to Issue and Record a Notice of Completion.
g. Adopt a Resolution Rejecting All Bids for the 2023 Pavement Crack Seal Project C9416.

10. NEW BUSINESS
a. Consideration of Adopting a Resolution Appropriating $34,320 from the General Fund Unassigned Fund Balance to Peninsula Volunteers, Inc. to Provide Meal Services to Eight WaitListed San Carlos Residents for One Year.

11. PUBLIC HEARING
a. Consideration of Adopting a Resolution Approving General Plan Land Use Map Corrections for 25 Parcels on Phelps Road, Highland Court, Highland Avenue, and Spring Valley Way of which 22 Parcels will be Designated “Single Family (6DUs/acre)” and 3 Parcels will be Designated “Single Family, LowDensity (3DUs/acre).”

12. AGENDA SETTING
Items discussed in this Agenda Setting Section will be considered by the Council for placing on a future agenda. No action will be taken on these items at this meeting. a. Consideration of Agendizing an item to Call for Review of the Planning and Transportation Commission’s May 1, 2023 Decision Regarding the 808 Alameda de las Pulgas Townhouse Development (APNs 049360060, 050220020, 050 220170, 050220160), Pursuant to San Carlos Municipal Code 18.27.150E.

13. ADJOURNMENT
Any writings or documents provided to a majority of the City Council regarding any item on this agenda will be made available for public inspection upon request.

In compliance with the Americans with Disabilities Act and Title VI, and as outlined in the City’s Reasonable Accommodations Policy, if you need special assistance or translation services to participate in this meeting, please contact the City Clerk’s Office at (650) 8024222 or via email at [email protected]. Notification in advance of the meeting will enable the City to make reasonable arrangements to ensure accessibility to this meeting.

1 CITY OF SAN CARLOS
City Council/Successor Agency to the
Redevelopment Agency/Housing Authority
Regular Meeting
May 08, 2023 7:00 PM
Council Chambers, City Hall
600 Elm Street, San Carlos, CA 94070
www.cityofsancarlos.org
AGENDA
This meeting will be conducted both inperson at City Hall and virtually via Zoom. Members of the public will have the option to observe the meeting and address the City Council as outlined below.

InPerson Participation:

Location. City Hall – 600 Elm Street, Council Chambers.

Remote Participation :

Councilmembers may participate in this meeting remotely as authorized by Assembly Bill 2449.

MAYOR: Adam Rak
COUNCIL: Ronald Collins, John Dugan, Sara McDowell, Pranita Venkatesh

1. CALL TO ORDER

2. ASSEMBLY BILL 2449 TELECONFERENCE REQUESTS

3. PLEDGE OF ALLEGIANCE

4. CHANGES TO THE ORDER OF THE AGENDA

5. REPORT FROM CLOSED SESSION

8. PUBLIC COMMENT
Persons wishing to address the City Council on matters NOT on the posted agenda may do so.

13. ADJOURNMENT
Any writings or documents provided to a majority of the City Council regarding any item on this agenda will be made available for public inspection upon request.

2 CITY OF SAN CARLOS
City Council/Successor Agency to the
Redevelopment Agency/Housing Authority
Regular Meeting
May 08, 2023 7:00 PM
Council Chambers, City Hall
600 Elm Street, San Carlos, CA 94070
www.cityofsancarlos.org
AGENDA
This meeting will be conducted both inperson at City Hall and virtually via Zoom. Members of the public will have the option to observe the meeting and address the City Council as outlined below.

InPerson Participation:

Location. City Hall – 600 Elm Street, Council Chambers.

Remote Participation :

Councilmembers may participate in this meeting remotely as authorized by Assembly Bill 2449.

MAYOR: Adam Rak
COUNCIL: Ronald Collins, John Dugan, Sara McDowell, Pranita Venkatesh

1. CALL TO ORDER

2. ASSEMBLY BILL 2449 TELECONFERENCE REQUESTS

3. PLEDGE OF ALLEGIANCE

4. CHANGES TO THE ORDER OF THE AGENDA

5. REPORT FROM CLOSED SESSION

8. PUBLIC COMMENT
Persons wishing to address the City Council on matters NOT on the posted agenda may do so.

13. ADJOURNMENT
Any writings or documents provided to a majority of the City Council regarding any item on this agenda will be made available for public inspection upon request.

3 CITY OF SAN CARLOS
City Council/Successor Agency to the
Redevelopment Agency/Housing Authority
Regular Meeting
May 08, 2023 7:00 PM
Council Chambers, City Hall
600 Elm Street, San Carlos, CA 94070
www.cityofsancarlos.org
AGENDA
This meeting will be conducted both inperson at City Hall and virtually via Zoom. Members of the public will have the option to observe the meeting and address the City Council as outlined below.

InPerson Participation:

Location. City Hall – 600 Elm Street, Council Chambers.

Remote Participation :

Councilmembers may participate in this meeting remotely as authorized by Assembly Bill 2449.

MAYOR: Adam Rak
COUNCIL: Ronald Collins, John Dugan, Sara McDowell, Pranita Venkatesh

1. CALL TO ORDER

2. ASSEMBLY BILL 2449 TELECONFERENCE REQUESTS

3. PLEDGE OF ALLEGIANCE

4. CHANGES TO THE ORDER OF THE AGENDA

5. REPORT FROM CLOSED SESSION

8. PUBLIC COMMENT
Persons wishing to address the City Council on matters NOT on the posted agenda may do so.

13. ADJOURNMENT
Any writings or documents provided to a majority of the City Council regarding any item on this agenda will be made available for public inspection upon request.

4 San Carlos City Council/Successor Agency to the
Redevelopment Agency/Housing Authority Regular Meeting
Council Chambers, City Hall
600 Elm Street, San Carlos, CA 94070
March 27, 2023 7:00 PM

MINUTES

ROLL CALL

City Council Present: Adam Rak, Mayor (depart from meeting at 9:34 PM) John Dugan, Vice Mayor
Ronald Collins, Councilmember
Sara McDowell, Councilmember
Pranita Venkatesh, Councilmember

Staff Present: Nil Blackburn, Assistant City Manager
Lisa Costa Sanders, Principal Planner Consultant
Gareth Harris, Fire Marshall
Adam Lokar, Senior Sustainability Analyst
Steven Machida, Public Works Director
Andrea Mardesich, Assistant Community Development Director Rebecca Mendenhall, Administrative Services Director
Crystal Mui, City Clerk
Amy Newby, Parks and Recreation Director
Cristian Padilla, Economic Development Coordinator
Lisa Porras, Planning Manager
Gregory Rubens, City Attorney
Al Savay, Community Development Director
Megan Wooley-Ousdahl, Senior Planner

1. CALL TO ORDER

Mayor Rak called the meeting to order at 7:00 PM.

2. ASSEMBLY BILL 2449 TELECONFERENCE REQUESTS

Mayor Rak announced that all members of the Council are participating in this meeting in-person.

3. PLEDGE OF ALLEGIANCE

The Pledge of Allegiance was led by Mayor Rak.

4. CHANGES TO THE ORDER OF THE AGENDA

None.

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5. REPORT FROM CLOSED SESSION
City Attorney Greg Rubens reported that there are no reports from the closed session item held this evening.

6. PRESENTATIONS
a. Present a City Coin to Community Volunteer Debbie Denton.

Mayor Rak presented a city coin to Debbie Denton for her volunteer work in the community.

Ms. Denton thanked the Council fo r the recognition and encouraged everyone to volunteer.

7. COUNCIL COMMUNICATIONS AND ANNOUNCEMENTS

Councilmember Collins reported that there will be weekend service interruption on Caltrain due to electrification work.

Councilmember McDowell reported that the San Mateo County Library now provides free period products and that she recently delivered Meals on Wheels to homebound residents.

Vice Mayor Dugan spoke on a recent letter that Peninsula Clean Energy sent to the B ay
Area Air Quality Management District summariz ing a list of concerns mandating electrification.

Mayor Rak announced that the call for commission applications has opened and the deadline is May 12th. He also announced that he had the opportunity to thro w out the first pitch at Little League’s opening night.

8. PUBLIC COMMENT

Klare Allen spoke about out against National Emerging Infection Diseases Laboratories (NEIDL) and cautioned the City about these laboratories.

Amanda, with the Bay Area Youth Climate Action Group , spoke on the adverse affects artificial turf has on our health and environment and requested Council pass a moratorium on them.

Mark, with the Bay Area Youth Climate Action Group, spoke on the adverse affects artificial turf has on our health and environment and requested Council pass a moratorium on them.

Zinovy Fichenholz, resident, commented that biosafety lab 3s are dangerous and also suggested synchronizing street lights to reduce idling of cars.

9. CONSENT CALENDAR

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MOTION: Adopt Consent Calendar items ‘a’ – ‘i’.

MOVER: Sara McDowell
SECONDER: Pranita Venkatesh
AYES: Collins, McDowell, Venkatesh, Dugan, Rak
NAYS: None
RESULT: Motion Passed 5 – 0

a. Motion to Waive Reading of All Ordinances.

b. Approve the February 13, 2023 City Council Regular Meeting Minutes.

c. Adopt a Resolution Approving a Professional Services Agreement for On Call Mechanical, Electrical, and Plumbing Engineering Services for a One Year Term, with an Annual Not to Exceed Amount of $1,000,000, to Salas O’Brien and Authorizing the City Manager to Execute the Agreement. Resolution 2023-033

d. Adopt a Resolution Proclaiming the Termination of the Declaration of Local Emergency Dated January 5, 2023 Arising out of the December 2022 and January 2023 Atmospheric River Storms. Resolution 2023-034

e. Adopt a Resolution Authorizing the City Attorney to Draft a Revocable License Agreement with Bianchini’s Supermarket Inc. for the Installation of a Shoppi ng Cart Security System Within the Right of Way of a Public Parking Lot that is Owned by the City of San Carlos (APN: 050 -163-500), and Authorize the City Manager to Sign and Approve the Agreement. Resolution 2023-035

f. Deny Claim of Thelma Ruiz.

g. Adopt a Resolution Authorizing the City Manager to Amend the Agreement with Pacific Office Automation for Printing Services and Authorize the City Manager to Amend the Agreement to Add, Replace, and Modify Printers, Devices and Maintenance Services as Needed. Resolution 2023-036

h. Deny Claim of Scott Rhodes.

i. Adopt a Resolution Authorizing the City Manager to Sign the Regional Early Action Planning (REAP) Streamlining Pilot Agreement with the Association of Bay Area Governments for a Two Year License for Symbium Plancheck Software at No Cost to the City of San Carlos. Resolution 2023-037

10. PUBLIC HEARING

a. Consideration of Introducing an Ordinance Amending the City of San Carlos Municipal Code Title 18 to Regulate Laboratories with Biosafety Levels (BSL).

Principal Planner Lisa Costa Sanders presented on proposed regulations for biosafety levels and, along with Consultant Carla Boragno - Former Vice President of Site

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Services with Genentech, Planning Director Consultant Carol Johnson, City Attorney Greg Rubens, Community Development Director Al Savay and Fire Marshall Garet Harris, responded to Council questions.

Council provided the following disclosures and noted that it won’t impact their decision:

- Vice Mayor Dugan met with the MBC Biolab Developer on this topic and also met with the Sierra Club.
− Councilmember McDowell met with several life science developers over last 4 years, including Alexandria, MBC Biolabs and Presidio Bay , but those conversations were not related to tonight’s topic. She also met with t he Sierra Club.
− Councilmember Collins met with life science developers in previous years on other issues.
− Mayor Rak met several developers over the last few years, but not on this topic .

He also met with the Sierra Club.
− Councilmember Venkatesh’s husband works for life science .

Public Comment

Sue Chow, Chair of the Sierra Club Peninsula Regional Group , spoke against approving levels 3 and 4 biolabs.

Richard Ebright, Professor of Chemistry and Chemical Biology at Rutgers University, addressed Council questions and spoke in support to proceed with the proposed Ordinance.

Sam Herzberg, resident on behalf of the Greater East San Carlos Board, requested more development notices be sent directly to the east side and requested staff to respond to their letter submitted on Friday.

Jeff Maley, spoke in favor of banning them Biosafety Level (BSL) 3 labs.

Zinovy Fichenholz, resident, spoke in favor of banning BSL 3 and 4 labs.

Gladwyn d’Souza, Conservation Chair of the Sierra Club, spoke in favor of banning BSL 3 and 4 labs.

Robert spoke in favor of banning BSL 3 labs.

Gita Dev, Co-Chair of the Sustainable Land Use Committee in the Sierra Club Loma Prieta Chapter, spoke in favor of banning BSL 3 research.

Paul Magginetti, resident, spoke in favor of Option 2 to prohibit BSL 3 and 4 activities.

Bryce Nickels, Professor of Genetics and Lab Director at the Waksman Institute of Microbiology at Rutgers, spoke in support of banning BSL 3 and 4 labs.

Gary Baldocchi, resident, spoke in favor of banning BSL 3 labs.

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Debbie Baldocchi, resident, spoke in favor of banning BSL 3 labs.

Sean Peters spoke in favor of banning BSL 3 labs.

Angela Williams -Mitchell, representing Roxbury Safety Net , spoke in favor of banning BSL 3 labs.

Anna Axiaq, resident, spoke in favor of banning BSL 3 and 4 labs.

Dimitri Vandellos, resident, highlighted reasons for and against banning BSL 3 labs and requested an open public process for these types of decisions.

Jennifer Rosse, resident, spoke against BSL 3 and 4 labs.

Daniel, resident, spoke in favor of banning BSL 3 and 4 labs.

David Crabbe, resident and on behalf of the Sierra Club , spoke in favor of banning
BSL 3.

Steven Goodale spoke in favor of banning BSL 3 and 4 labs.

Lorraine Fultz, with the Roxbury Safety Net, spoke in favor of banning BSL 3 and 4 labs.

Ben Fuller, resident, asked for his letter to be added to the Council’s agenda packet and spoke against BSL 3 and 4 labs.

Christy Shirilla, Bay Area Policy Manager for Biocom California, spoke in support of a conditional use permit on BSL 3 and banning BSL 4.

Klare Allen spoke in favor of banning BSL 3 and 4 la bs and recommended the community view the regional FEMA map for more info.

MOTION: Approve to Continue the Item to a Date Uncertain.

MOVER: John Dugan
SECONDER: Sara McDowell
AYES: Dugan, Collins, McDowell, Venkatesh, Rak
NAYS: None
RESULT: Motion Passed 5 – 0

Mayor Rak left the meeting at 9:34 PM.

Vice Mayor Dugan chaired the remainder of the meeting. He called a recess at 9:35 PM and reconvened the meeting at 9:41 PM.

11. NEW BUSINESS

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a. Consideration of Adopting a Resolution Appropriating $50,000 from the General Capital Fund (Fund 25) Unassigned Fund Balance for the Preparation of a Greenhouse Gas In-Lieu Fee Study.

Senior Sustainability Analyst Adam Lokar spoke on the need to conduct a study on the development of a Greenhouse Gas In-Lieu Fee and responded to Council questions.

Public Comment

Gladwyn d’Souza, resident, voiced support for a Greenhouse Gas In-Lieu Fee.

Vice Chair Dugan r equested staff return to Council for an additional appropriation if that would help expedite the process.

MOTION: Adopt Resolution 2023-038 Appropriating $50,000 from the General Capital Fund (Fund 25) Unassigned Fund Balance for the Preparation of a Greenhouse Gas In-Lieu Fee Study.

MOVER: Ronald Collins
SECONDER: Sara McDowell
AYES: Venkatesh, Collins, McDowell, Dugan
NAYS: None
NONE: Rak
RESULT: Motion Passed 4 – 0 – 1

12. AGENDA SETTING

None.

13. ADJOURNMENT

The meeting adjourned at 9:52 PM.

____________________________
Crystal Mui,
City Clerk

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CITY COUNCIL

STAFF REPORT
MEETING DATE: May 8, 2023
ITEM TITLE: Adopt a Resolution Approving the 2023 Annual Sewer Rehabilitation Project C9617 Plans and Specifications and Authorizing a Call for Bids.

RECOMMENDATION:

Staff recommends that the City Council adopt a Resolution approving the 2023 Annual Sewer Rehabilitation Project C9617 (“Project”) plans and specifications and authorizing a call for bids.

FISCAL IMPLICATIONS:

There is no fiscal impact associated with staff’s recommendation, nor is additional appropriation needed at this time. Any additional appropriation needed will be requested at the time of Project award.

Funding for the Project comes from C9617, which will have a balance of $ 4,745,110 for Fiscal Year (“FY”) 2022-23.

The total estimated cost for this Project is $6,846,000, which includes the proposed construction contract amount of $5,953,000, plus a 15 percent contingency in the amount of $893,000. There are insufficient funds in the budget to award the Project; therefore, staff will request additional appropriation at the time the Project is awarded.

BACKGROUND:

In January 2013, the City completed the Sewer Collection System Master Plan (“Master Plan”), which identifies and prioritizes sanitary sewer pipelines for replacement and upsizing. In accordance with the Master Plan, staff has created two programs: Sewer System Capacity Assurance and Sewer System Rehabilitation.

Projects associated with the Sewer System Capacity Assurance Report were completed in 2017.

Therefore, staff is now focusing attention on projects to rehabilitate or replace all Grade 4 and 5 sewer defects in the sewer system. Grade 5 defects are considered the most serious defects encountered in sewer mains.

The Sewer System Rehabilitation program addresses all the structurally deficient pipelines identified by the Master Plan. With a limited budget, approximately four to seven percent of the City’s defective pipes will be addressed each fiscal year, depending on the approved budget for that particular fiscal year.

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The City’s sewer system is divided into 17 basins as depicted in the Sewer Master Plan. Staff created a systematic approach that will rehabilitate or replace all Grade 4 and 5 defects, basin by basin. The goal is to follow a program that will methodically and continuously monitor and improve the entire sewer system.

The Project will replace approximately 8,100 linear feet of sewer mains ranging in diameter between six and 10 inches, rehabilitating approximately 1,200 linear feet of sewer mains, replacing 216 lower laterals, and replacing 50 manholes at various locations throughout the City.

ANALYSIS:

The City Engineer signed the final bid set construction documents on April 14, 2023. The tentative bid opening date is June 1, 2023, with award of the Project at the June 26, 2023 City Council meeting.

Staff recommends approving the Project plans and specifications and authorizing a call for bids for the Project.

ALTERNATIVES:

The alternatives available to the City Council include:

1. Adopt a Resolution approving the 2023 Annual Sewer Rehabilitation Project C9617 plans and specifications and authorizing a call for bids; or

2. Do not adopt the Resolution; or

3. Provide staff with alternative direction.

Respectfully submitted by:

Steven Machida, Public Works Director
Approved for submission by:
_______________________
Jeff Maltbie, City Manager
ATTACHMENT(S):

1. Resolution

2. 2023 Sewer Rehabilitation Project C9617 Plans and Specifications

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RESOLUTION NO. 2023 – ____

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SAN CARLOS APPROVING THE 2023 ANNUAL SEWER REHABILITATION PROJECT C9617 PLANS AND SPECIFICATIONS AND AUTHORIZING A CALL FOR BIDS.

WHEREAS, in January 2013, the City completed the Sewer Collection System Master Plan (“Master Plan”) that identifies and prioritizes sanitary sewer pipelines for replacement and upsizing; and
WHEREAS, in accordance with the Master Plan, staff has created two programs: Sewer System Capacity Assurance and Sewer System Rehabilitation; and WHEREAS, projects associated with the Sewer System Capacity Assurance Report were completed in 2017; and
WHEREAS, staff is now focusing on projects to rehabilitate or replace all Grades 4 and 5 sewer defects in the sewer system; and
WHEREAS, the Sewer System Rehabilitation program will address all the structurally deficient pipelines identified by the Master Plan; and
WHEREAS, funding for the 2023 Sewer Rehabilitation Project (“Project”) comes from C9617, which will have a balance of $ 4,745,110 for Fiscal Year 2022-23; and WHEREAS, the total estimated cost for this Project is $6,846,000, which includes the proposed construction contract amount of $5,953,000 and a 15 percent contingency in the amount of $893,000; and
WHEREAS, there are insufficient funds in the budget to award the Project; therefore, staff will request additional appropriation at the time the Project is awarded; and WHEREAS, the City Engineer signed the final bid set construction documents on April 14, 2023 and the tentative bid opening date is June 1, 2023; and WHEREAS, staff recommends approving the Project plans and specifications and authorizing a call for bids.

NOW, THEREFORE BE IT RESOLVED that the San Carlos City Council approves the 2023 Annual Sewer Rehabilitation Project C9617 plans and specifications and authorizes a call for bids.
* * * * *
I, Crystal Mui, hereby certify that the foregoing Resolution was duly and regularly passed and adopted by the City Council of the City of San Carlos at a scheduled meeting thereof held on the 8th day of May 2023, by the following vote:

AYES, COUNCILMEMBERS:___________________________________________ NOES, COUNCILMEMBERS:___________________________________________

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ABSENT, COUNCILMEMBERS:___________________________________________ ________________________________
CITY CLERK of the City of San Carlos
APPROVED:
___________________________
MAYOR of the City of San Carlos

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CITY OF SAN CARLOS

SAN MATEO COUNTY, CALIFORNIA
Public Works Department
600 Elm Street
San Carlos, CA 94070
Contract Documents
For the
2023 Sewer Rehabilitation Project
CITY PROJECT NO: C9617
BID OPENING: May 30, 2023 at 10:00 a.m.

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2023 Sewer Rehabilitation Project
City Project No. C9617

DESIGN CERTIFICATION
The Plans and Technical Specifications contained herein have been prepared by, or under the responsible charge of, the following registered person(s):

Prepared by:
04/11/23
___________________________________________________________ Renee CRAWFORD, P.E.

Project Manager/Engineer
Mott MacDonald
Date
2077 Gateway Pl, Suite 550
San Jose, CA 95110
(408) 876-6078
Approved for Construction:
4/14/2023
____ _____________________________________________
GRACE LE, P.E., CITY ENGINEER
Public Works Department
City of San Carlos
Date
600 Elm Street, San Carlos, CA 94070
(650) 802-4201

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TABLE OF CONTENTS
A. INTRODUCTORY PAGES
Title Page No.

Cover Page i
Design Certifications
Table of Contents
Notice Inviting Sealed Proposals
Instructions to Bidders
Schedule of Required Bid Documents and Agreement Forms
ii
iii
vi
viii
x
B. BID PROPOSAL
Bid Proposal Cover Page
Bid Proposal Table of Contents
Bid Proposal
P-1
P-2
P-3
Bidding Requirements P-4
Bid Schedule P-6
Designation of Subcontractors
Department of Industrial Relations Registration Requirement Certifications and Affidavits
Non-Collusion Affidavit
Bidder’s Qualifications
Bidder’s References
P-10
P-10
P-11
P-12
P-17
P-18
P-20
Signature Pages
Bidder’s Bond
C. AGREEMENT AND AGREEMENT FORMS
Agreement and Agreement Forms Table of Contents
Agreement for Public Projects
A-1
A-2
Exhibit A – Contractor’s Bid Proposal
Exhibit B – Insurance Coverage Form
Resolution of Construction Claims
Agreement Forms
A-9
A-10
A-11
Payment Bond
Performance Bond
A-13
A-15
A-17
A-18
A-19
A-20
A-22
Workers Compensation Certification
Certification of Safety Requirements for Contractors and Vendors Drug-Free Workplace Certification
Escrow Agreement for Security Deposits in Lieu of Retention (Optional) Guarantee
D. GENERAL PROVISIONS
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8
Section 9
Section 10
Section 11
Terms and Definitions GP-1
GP-5
GP-8
Proposal Requirements and Conditions
Review of Bids, Contract Award and Execution
Scope and Control of the Work
Changes of Work
Control of Materials
Utilities
Prosecution and Progress
Responsibilities of the Contractor
Measurement and Payment
Guaranty
GP-13
GP-20
GP-24
GP-27
GP-30
GP-39
GP-54
GP-60
iii

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E. SPECIAL PROVISIONS
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8
Section 9
Section 10
Section 11
Section 12
Section 13
Section 14
Section 15
Section 16
Section 17
Section 18
Section 19
Section 20
Section 21
Section 22
Section 23
Section 24
Section 25
Section 26
Section 27
Section 28
Section 29
Section 30
Section 31
Description of Work
Location
SP-1
SP-1
SP-1
SP-1
SP-2
SP-2
SP-2
SP-3
SP-3
SP-3
SP-3
SP-3
SP-4
SP-4
SP-4
SP-4
SP-4
SP-5
SP-5
SP-6
SP-6
SP-6
SP-6
SP-7
SP-9
SP-9
SP-10
SP-10
SP-10
SP-10
SP-11
Sequencing and Order of Work
Project Information Sign
Portable Changeable Message Sign (PCMS)
Days and Hours of Operation
Noise Control
Protection of Trees
Time of Completion and Liquidated Damages
Licenses
Caltrans Encroachment Permit
Staging / Construction Area and Excavation Off-haul
City Furnished Materials
“No Parking” Signs
Water
Power
Owner / Contractor Meetings
Notification of Residents and Merchants
Storm Water Pollution Prevention
Construction and Demolition Debris
Haul Routes
Sanitation Facilities
Safety of Persons and Property
Traffic Control
SamTrans Coordination
Existing Utilities
Construction Schedule
Street Sweeping
Daily Work Reports
Geotechnical Report and CCTV Video
Construction Submittals
F. TECHNICAL SPECIFICATIONS
Bid Item Descriptions TS-3
Section 01505 Mobilization
Section 01560 Temporary Controls
Section 01720 Sewer Outage Notifications
Section 01730 Public and Agency Notifications
Section 02050 Demolition, Abandonment, and Removal
Section 02145 Sewage Flow Control
TS-21
TS-23
TS-27
TS-29
TS-32
TS-36
TS-44
TS-69
TS-75
TS-81
TS-82
TS-96
TS-102
TS-119
TS-124
TS-129
Section 02200 Earthwork
Section 02350 Excavation Support Shoring and Bracing
Section 02500 Asphalt Concrete Paving
Section 02510 Slurry Seal Pavement Surfacing
Section 02641 Sanitary Sewer Rehabilitation Using CIPP Method Section 02642 Pipe Bursting
Section 02643 Pipe Reaming
Section 02701 Precast Concrete Structures
Section 02735 Sanitary Sewer System Testing and Cleaning Section 02736 Closed Circuit Television (CCTV) Inspection of Sanitary Sewer System
Section 02739 Building Sewer (Lateral) Construction and Reinstatement Section 02765 Traffic Stripes and Pavement Markings
Section 02768 Temporary Pavement Markings
Section 02800 Traffic Control
TS-135
TS-138
TS-141
TS-144
TS-149Section 02892 Traffic Loops
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Section 02990 Adjust Incidental Structures to Grade
Section 03123 Controlled Low Strength Material
Section 03200 Concrete Reinforcement
Section 03300 Cast-In-Place Concrete
Section 03600 Grout
Section 03930 Manhole Rehabilitation
Section 05541 Manhole Frames and Covers
Section 15050 General Piping
Section 15063 SDR 26 Polyvinyl Chloride Sewer Pipe (PVC) Section 15066 High Density Polyethylene (HDPE) Pipe
TS-152
TS-154
TS-159
TS-163
TS-174
TS-178
TS-192
TS-194
TS-204
TS-210
G. APPENDICIES
Appendix A Daily Work Report
Appendix B
Appendix C
Pothole Data Sheets
Project Information Sign
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CITY OF SAN CARLOS

SAN MATEO COUNTY, CALIFORNIA

NOTICE INVITING SEALED PROPOSALS
NOTICE IS HEREBY GIVEN that sealed proposals or bids will be for the "2023 Sewer Rehabilitation Project, No. C9617” shall be received at the San Carlos City Clerk’s Office at City Hall – 600 Elm Street, San Carlos, CA 94070 by Tuesday, May 30, 2023 at the hour of 10:00 a.m. and will immediately then be publicly opened, examined and announced by the San Carlos City Clerk. Note - City Hall is closed to the public every Wednesday and Friday.

A Class A, Contractor’s License is required for this work. Work will be done and payments will be made in accordance with provisions more particularly described in the plans and specifications.

The scope of work generally includes the trenching and installation, pipe bursting, pipe reaming, or cured- in-place installation of 6-inch to 10-inch sanitary sewer pipe, localized pipe repairs, reconnections/replacement of sewer laterals, installation/replacement/rehabilitation/removal of sanitary sewer manholes, and the surface restoration of existing improvements. Bids are required for the entire work described herein in accordance with the instructions to bidders. The Engineer’s Estimate is between $5,500,000 and $6,500,000.

Bids must be accompanied by a Proposal guarantee amounting to ten (10%) percent of the bid as described in the specifications. Said guarantee shall be forfeited to the City in case the bidder depositing the same does not, within fifteen days after written notice that the contract has been awarded to him (1) enter into a contract with the City and (2) furnish Performance and Payment Bonds as described in the specifications.

The City Council reserves the privilege of rejecting any and all proposals or to waive any irregularities or informalities in any proposals or in the bidding. No bidder may withdraw his proposal for a period of ninety (90) calendar days after the date set for opening of proposals.

As a “Public Works” project and pursuant to Section 1773 of the Labor Code, the general prevailing wage rates for San Mateo County shall apply to this contract, as determined by the Director of the California Department of Industrial Relations.

Plans and specifications, forms of proposals, bonds and contracts may be inspected or obtained from ARC Document Solutions at 829 Cherry Lane, San C arlos, CA 94070, (650) 631-2310; email at sancarlos@e- arc.com ; or visit the City of San Carlos Website at www.cityofsancarlos.org. Bidders must register with ARC Document Solutions to obtain further information.

Bidders are directed to the Instructions for Bidders for additional contract requirements.

Dated: _____________________
_____________________
/s/ CRYSTAL MUI
City Clerk
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CITY OF SAN CARLOS

SAN MATEO COUNTY, CALIFORNIA

INSTRUCTIONS TO BIDDERS

1. 2.

Proposal Requirements: Bidder's attention is directed to the General Provisions of these Specifications for the requirements and conditions which must be adhered to in the preparation of the proposal form and submission of this proposal.

Receipt of Bids and Bid Opening: Proposals shall be received at the office of the City Clerk, 600 Elm Street, San Carlos, CA 94070, not later than the bid deadline described in the Notice Inviting Sealed Proposals. Proposals shall be submitted in a sealed envelope, plainly marked on the outside "2023 Sewer Rehabilitation Project, No.

C9617”.

3. 4.

Time of Completion and Liquidated Damages: All work shall be diligently prosecuted to completion before the expiration of Two Hundred and Ten (210) Working Days for Base Bid from the date of receipt of the “Notice to Proceed”. If the Contractor fails to complete the work within the above-specified time limit, the Contractor shall pay liquidated damages to the City, computed at the rate of Two Thousand and One Hundred Dollars ($2,100) for each working day beyond the specified time limit until the project is completed.

Bid Security: Pursuant to California Public Contract Code Section 20170, each proposal shall be accompanied by a bid security in the form of cash, cashier’s or certified check, or bidder’s bond made payable to the “City of San Carlos” for an amount equal to at least ten percent (10%) of the Bid Amount and no bid shall be considered unless such security is enclosed therewith.

5. 6.

Bid Guarantee: No bid shall be withdrawn except as provided for pursuant to Public Contract Code Section 5103, and the bidder shall guarantee the Total Bid Price for a period of ninety (90) calendar days from the date of the bid opening.

Contractor’s License: Bidders are to be licensed in accordance with the provisions of the “Contractor’s License Law,” Chapter 9 of Division 3 of the State Business and Professions Code. In addition, at the time of submitting the bid, bidder must have the following classification of contractor’s license: Class A, Contractor’s License.

7. 8.

Additional Registration and Licensing Requirements: In accordance with Labor Code Section 1725.5, Contractor and all Subcontractors shall be registered with the California Department of Industrial Relations (DIR) as a condition of being listed on the proposal form. All 2 nd and lower tier subcontractors working on the project shall be registered with the Department of Industrial Relations prior to the work being performed. Contractor and all Subcontractors shall also obtain a City business license prior to the work being performed.

Prevailing Wage: The work contemplated by this contract is a “public work” subject to prevailing wages under California Labor Code Section 1770 et. seq. The successful bidder will be required to pay not less than the prevailing rate of per diem wages as determined by the California Department of Industrial Relations or Federal Minimum Wage Rates as determined by the United States Secretary of Labor in effect on the date the work is performed.
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9. Bonds and Insurance: All contractors are required to furnish to the City faithful performance, labor and materials, and 2-year warranty bonds and insurance, as required in the specifications.

10. Security Substitution: Pursuant to California Public Contract Code Section 22300, and at the request and expense of the Contractor to whom the Contract is awarded, securities of a value equivalent to the retention amount, in a form approved by the City, shall be permitted in substitution for money withheld by the City to ensure performance under the Contract.

11. 12.

Pre-Bid Conference: No pre-bid conference has been scheduled for this project.

Requests for Clarification and Project Communication: In the event the bidder has any questions as to the meaning of any part of the plans and specifications, or if the bidder finds any error, inconsistency, or ambiguity in the Contract Documents, the bidder shall make a written request for clarification prior to submitting its bid. All questions and comments regarding the plans and specifications should be directed to the Project Manager indicated below and will only be responded to if received in writing at least five (5) working days before the bid opening. Questions received after this time and date may not be addressed.

City of San Carlos – Public Works Department
600 Elm Street, San Carlos, CA 94070
Attention: Vatsal Patel, Senior Engineer
[email protected]
Telephone: (650) 802-4202

13. These “Instructions to Bidders” are hereby made a part of the Contract Documents. ix

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SCHEDULE OF REQUIRED

BID DOCUMENTS AND AGREEMENT FORMS
Submit with Bid Proposal - The following documents must be completed, signed and submitted as part of the Bid Proposal, prior to the bid opening:

Completed Bid Proposal consisting of:

Bid Schedule
Designation of Subcontractors
Certifications and Affidavits:

1. 2.

3. 4.

Non-Collusion Affidavit
Bidder’s Qualifications
Bidder’s References
Bidder’s Personnel
D.

Signature Pages
Bid Guarantee (Bid Bond attached)
Addendum, if any (not attached) – signature page to be signed and submitted by bidder.

Submit Prior to Notice to Proceed -The following documents must be completed, signed and submitted after approval and award of the Contract, prior to the Notice to Proceed:

Agreement
Payment Bond
Performance Bond
Insurance Endorsements

1. 2.

3. General Liability
Automobile Liability
Worker’s Compensation
E. Certifications

1. 2.

3. Workers Compensation
Safety Requirements for Contractors and Vendors
Drug-Free Workplace
Submit Prior to Final Acceptance - The following documents must be completed, signed and submitted prior to final acceptance:

Guarantee
Stop Notice Releases, if any (form not included)
Record Drawings
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CITY OF SAN CARLOS

PUBLIC WORKS DEPARTMENT
600 Elm Street
San Carlos, CA 94070

BID PROPOSAL
FOR:
"2023 Sewer Rehabilitation Project”
City Project No. C9617
IN

CITY OF SAN CARLOS, COUNTY OF SAN MATEO

STATE OF CALIFORNIA
NOTE: All portions of all pages included within this section, and acknowledgement of receipt of any issued addenda must be properly completed, signed, and submitted with the bid. Failure to do so may result in the bid being deemed non-responsive by the City.

Bid Proposal
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BID PROPOSAL

TABLE OF CONTENTS
Bid Proposal Cover Page ....................................................................................................... P-1 Bid Proposal Table of Contents.............................................................................................. P-2 BID PROPOSAL PAGES TO BE SUBMITTED WITH BID:

Bid Proposal................................................................................................................. P-3 Bidding Requirements.................................................................................................. P-4 Bid Schedule ................................................................................................................ P-6 Designation of Subcontractors ..................................................................................... P-10 Department of Industrial Relations Registration Requirement ..................................... P-10 Certifications and Affidavits
Non-Collusion Affidavit .......................................................................................... P-11 Bidder’s Qualifications............................................................................................ P-12 Bidder’s References ............................................................................................... P-17 Signature Pages........................................................................................................... P-18 Bid Bond ...................................................................................................................... P-20 Bid Proposal
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BID PROPOSAL
"2023 Sewer Rehabilitation Project”
CITY PROJECT NO. C9617
Bid To: Honorable Mayor and City Council
City of San Carlos, City Hall
San Carlos, CA 94070
Bid From:

Bidder’s Company Name:

Contact Person:

Business Street Address:

City, State, Zip Code:

Phone No.:

E-mail:
( )
__ __________________
Contractor License No.:

Contractor License Expiration Date: ____
Dear Mayor and Members of the City Council:

I, as bidder, declare that I have satisfied myself as to the actual conditions and requirements of the work by careful examination of the location of the proposed work, by examination of the plans and specifications including the Instructions to Bidders, and by other measures, and that after submission of the bid, I will not dispute, complain or assert that there was any misunderstanding in regards to the nature or amount of work to be done.

I hereby certify that only those parties interested in this proposal as principals are named in this proposal and that this bid is genuine, and not sham, collusion, or made in the interest or in behalf of any person not named. I have not directly or indirectly induced or solicited any other bidder, person, firm or corporation to put in a sham bid, or refrain from bidding, and have not in any manner sought by collusion to secure for myself an advantage over any other bidder.

I agree that if this proposal is accepted, I will contract with the City of San Carlos in the form of agreement proposed, will provide all bonds and insurance certificates as required by the agreement and will furnish all equipment and materials and perform all the labor required to complete the work in accordance with the plans, specifications and other contract documents, for the unit or lump sum prices set forth in the Bid Schedule.

Bid Proposal
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I have carefully checked all of the figures in the Bid Schedule and understand that the City shall not be responsible for any errors or omissions on my part in making up this bid. I agree that this bid may not be withdrawn for a period of ninety (90) calendar days from the date of the bid opening and that the City reserves the right to reject any or all bids, waive any informality in bids received, and may at its option make the award that in the judgment of the City is to the best interest of the City.

Bid Proposal
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BIDDING REQUIREMENTS
The work to be done and referred to here is in the City of San Carlos, County of San Mateo, State of California, and shall be constructed in accordance with all provisions of the project specifications and project plans including: any addenda; the Instructions to Bidders, the Agreement; the Standard Specifications and Standard Plans of the California Department of Transportation, current edition; the Labor Surcharge and Equipment Rental Rates; and payment of not less than the higher of the prevailing rate of per diem wages as determined by the Director of the California Department of Industrial Relations or Federal minimum wage rate as predetermined by the United States Secretary of Labor in effect on the date the work is performed.

For each of the various contract items of work designated on the Bid Schedule, the bidder shall set forth a unit or lump sum price which the bidder shall then use to calculate and designate a total cost for each item of work based upon the designated estimate of the quantities of work to be done, all in clearly legible figures in the respective spaces of the Bid Schedule provided for this purpose.

The bidder shall include in the unit or lump sum prices paid for the various contract items of work full compensation for conforming to the requirements of the Contract Documents and for completing all of the work required. No additional compensation shall be granted for any additional items unless categorized and approved as extra work under the terms of the agreement.

The estimate of construction quantities set forth in the Bid Schedule is approximate only, being given only as a basis for the comparison of bids, and the City does not expressly or by implication agree that the actual amount of work will correspond with those estimated quantities. The City reserves the right to increase the amount of any class or portion of the work or to omit portions of the work as may be deemed necessary or expedient by the Engineer. There shall be no claim for damage or loss of anticipated profit for any bid item omitted in its entirety, and payment will only be made on the basis of actual quantities of work performed.

If the City accepts this proposal and the bidder fails to enter into the contract and/or fails to furnish bonds as required by the specifications with sureties satisfactory to the City within ten (10) calendar days after the bidder has received notice from the City that the contract has been awarded, the City may, at its option, determine that the bidder has breached and abandoned the contract, and thereupon, the bid security accompanying this proposal shall be forfeited and become the property of the City.

The Notice to Proceed will not be issued until after the contract has been fully executed. The contractor shall commence the work under the contract within ten (10) days following the date of the Notice to Proceed, or as otherwise specified in the project specifications or negotiated with the City, and shall diligently prosecute the project to completion within the time specified. The contract completion period is inclusive of the time needed for material delivery.

Bidder shall comply with the requirements of the California Labor Code, including sections 1770 et seq., and pay not less than the prevailing rate of per diem wages as determined by the Director of the California Department of Industrial Relations. Copies of such prevailing rate of per diem wages are on file at the office of the City Engineer, which copies shall be made available to any interested party upon request. The Contractor shall post a copy of such determination at the job site.

Bid Proposal
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As required by Section 6705 of the California Labor Code and in addition thereto, for any excavation of any trench or trenches five feet (5’) or more in depth, the Contractor shall submit to the Engineer for acceptance, a detailed plan showing the design of shoring, bracing, sloping, or other provisions to be made for worker protection from the hazard of caving ground during the excavation of such trench or trenches. Structural calculations prepared, stamped and signed by a Registered Engineer licensed to practice in the State of California shall accompany the plan to verify the structural safety and adequacy of the sheeting, shoring and bracing to be used on the project. No such plan shall allow any shoring, sloping or a protection system less effective than that required by the Construction Safety Orders of the State Division of Occupational Safety and Health.

In accordance with the provisions of Section 1860 of the Labor Code, prior to performing work on the Contract, each Contractor to whom a public works contract is awarded shall sign and file with the City the Worker’s Compensation Certification included in the “Agreement and Agreement Forms” section of these specifications.

Bidder’s attention is directed to Section 2 of the General Provisions for additional information and requirements pertaining to the submission of a bid, and which is incorporated here by reference.

Bidder’s attention is directed to Section 2.13, “Required Contractor and Subcontractor Registration,” of the General Provision. All contractors shall register with the Department of Industrial Relations according to Labor Code Section 1725.5.

Any protest of the proposed contract award must be submitted in writing to the City no later than 5:00 p.m. on the fifth business day following the date of the bid opening. Bidder is directed to the “Bid Protest Procedure” Section of the General Provisions for additional information.

Bid Proposal
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BID SCHEDULE
Bids are to be submitted for the entire work. All applicable sales taxes, state and/or federal, and any other special taxes, patent rights or royalties are included in the prices quoted in the bid.

In the case of a discrepancy between the product of the “Estimated Quantity” and the “Unit Price” with the “Item Total”, the product of the “Estimated Quantity” and the “Unit Price” shall prevail and the figure shown as the “Item Total” shall be adjusted accordingly, except as provided in cases involving (a) or (b) below:
(a) If the amount set forth as a unit price is unreadable or otherwise unclear, or is omitted, or is the same as the amount entered in the item total column, then the amount set forth in the item total column for the item shall prevail and shall be divided by the estimated quantity for the item and the price thus obtained shall be the unit price; (b) (Decimal Errors) If the product of the entered unit price and the estimated quantity is exactly off by a factor of ten, one hundred, etc., or one-tenth, or one-hundredth, etc. from the item total, the discrepancy will be resolved by using the entered unit price or item total, whichever most closely approximates percentage-wise the unit price or item total in the Engineer’s Estimate.

If both the unit price and the item total are unreadable or otherwise unclear, or are omitted, the bid may be deemed irregular. Likewise if the item total for a lump sum item is unreadable or otherwise unclear, or is omitted, the bid may be deemed irregular unless the project being bid has only a single item and a clear, readable total bid is provided.

In the case of a discrepancy between the sum of the figures in the item total column (adjusted per the previous paragraphs, if necessary) and the amount set forth as the total base bid amount, the sum of the figures in the item total column shall prevail and the amount shown as the total base bid amount shall be adjusted accordingly.

Bid Proposal
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City Project No. C9617

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BASE BID ITEMS ARE AS FOLLOWS:
"2023 Sewer Rehabilitation Project”
PROJECT NO. C9617
Item
No.

Estimated
QuantityItem Description
Mobilization
Unit Price Item TotalUnit
1 1 LS $
$
$
$
Preparation and Implementation of
Stormwater Pollution Prevention Plan
(SWPPP) - Unit Price bid shall not be
less than $10,000/LS
2 1 LS
3 4
5 6
7 Sheeting, Shoring, and Bracing
Traffic Control
1 1
LS
LS
EA
EA
EA
$
$
$
$
$
$
$
$
$
$
Rehabilitate Existing Sanitary Sewer
Manhole
Modify Existing Manhole Channels
and Base
Remove Sanitary Sewer Manhole
Rungs
7 16
21 Remove and Replace Existing
Sanitary Sewer Manhole With 48-Inch
Concrete Sanitary Sewer Manhole,
With or Without Drop Connection
New 48-Inch Sanitary Sewer
Manhole, With or Without Drop
Connection
8 9
41 8
EA
EA
$
$
$
$
Connect to Existing Sanitary Sewer
Manhole
Install Pipe Stub (5-Foot Min.) and
Reconnect Existing Pipes
Abandon Existing Sanitary Sewer
Manhole
6-Foot Point Repair to Existing 6-
Inch, 8-Inch, and 10-Inch Sanitary
Sewer Main
CIPP Rehabilitation of Existing 6-Inch
Sanitary Sewer Main
Remove and Replace Existing 6-Inch
Sanitary Sewer with 6-Inch
or 8-Inch DR 17 HDPE Sanitary
Sewer Main (Pipe Ream)
Remove and Replace Existing 8-Inch
Sanitary Sewer with 8-Inch
or 10-Inch DR 17 HDPE Sanitary
Sewer Main (Pipe Ream)
10 11
12 26
43 2
EA
EA
EA
$
$
$
$
$
$
$
$13
14 13 EA
LF1,175 $
$
$
$15
16 296
711
LF
LF $ $
Bid Proposal
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Item
No.

Estimated
QuantityItem Description Unit Price Item TotalUnit
Remove and Replace 6-Inch or 8-
Inch Sanitary Sewer with 6-Inch or 8-
Inch Sanitary Sewer Main (Open Cut)
Remove and Replace 8-Inch Sanitary
Sewer with 10-Inch Sanitary Sewer
Main (Open Cut)
17 18
4,591
661
LF $
$
$
$LF
Install New 8-inch Sanitary Sewer
Main (Open Cut)
Abandon Existing Sanitary Sewer
Main or Lateral
Reconnect Sanitary Sewer Lateral (as
Directed by the Engineer)
19 20
21 350
325
21 LF
LF
EA
$
$
$
$
$
$
Replace Sanitary Sewer Lateral -
Average Length 30-Foot (Pipe Burst)
(as Directed by the Engineer)
Replace Sanitary Sewer Lateral -
Average Length 30-Foot (Open Cut)
(as Directed by the Engineer)
Install or Remove and Replace
Sanitary Sewer Cleanout (as Directed
by the Engineer)
22 23
24 94
92 EA
EA
EA
$
$
$
$
$
$218
25 26
27 28
Realign Lateral (Open Cut) 6
5 5
9 EA
EA
EA
EA
$
$
$
$
$
$
$
$
Utility Crossing Supports
Rehabilitate Existing Sanitary Sewer
Manhole - Easement
Connect to Existing Sanitary Sewer
Manhole - Easement
Remove and Replace Existing 6-Inch
Sanitary Sewer with 6-Inch
or 8-Inch DR 17 HDPE Sanitary
Sewer (Pipe Ream) - Easement
Replace Sanitary Sewer Lateral -
Average Length 30-Foot (Open Cut)
(as Directed by the Engineer) -
Easement
Install or Remove and Replace
Sanitary Sewer Cleanout (as Directed
by the Engineer) - Easement
Over-excavation (as Directed by the
Engineer)
29 1,193 LF $ $
30 31
44 44
EA
EA
$
$
$
$
32 33
400
4 CF $
$
$
$Mobilization of Hard Rock Excavation
Equipment (Revocable) SITE
Hard Rock Excavation (Revocable) –
Unit Price bid shall not be less than
$100/CY
34 300 CY $ $
35 36
Type II slurry seal 168,316
8 SF
EA
$
$
$
$Utility Verification/Potholes
(Revocable)
Bid Proposal
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Total Base Bid Amount: $___________________
Notes:

1. The Contract will be compared and awarded on the basis of the Base Bid Amount.

2. All items on the Base Bid Schedule must be bid. Partial bids will not be accepted.

3. The City reserves the right to reject all bids for any reason whatsoever.

4. Issuance of the “Notice to Proceed” will constitute the beginning of the Contract.

Bid Proposal
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DESIGNATION OF SUBCONTRACTORS
The Contractor shall perform work equaling at least 30 percent of the value of the original total bid with the Contractor’s own employees and equipment, owned or rented, with or without operators.

In accordance with the Subletting and Subcontracting Fair Practices Act, Public Contract Code sections 4100 et seq. (the “Subcontracting Act”), the Bidder hereby certifies and submits, as required by law, the following concerning subcontractors:

1. 2.

The portion of the work, which will be done by each such subcontractor; and The name and location of the place of business of each subcontractor who will perform work or labor, fabricate a portion of the work or improvement according to detailed drawings in the project plans, or render service to the Contractor in or about the construction of the work in an amount in excess of one-half of one percent (0.5%) of the Contractor’s total bid.

Portion of Work to be
Performed by Subcontractor
Subcontractor Name,
Address and License Number
(License No. Required under AB 44)
Registered
with DIR?
 check if yes

1. 2.

3. 4.

5. 6.

7. (For additional Subcontractors, attach copies of this sheet as necessary) NOTE: THIS CERTIFICATE MUST BE COMPLETED AND RETURNED ALONG WITH THE CONTRACTOR’S BID PROPOSAL.  DEPARTMENT OF INDUSTRIAL RELATIONS REGISTRATION REQUIREMENT In accordance with Labor Code Section 1725.5, all contractors and subcontractors listed on a public works bid proposal must be registered with the DIR.

Bid Proposal
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NON-COLLUSION AFFIDAVIT
Title 23 United States Code Section 112 and
Public Contract Code Section 7106
State of California )
) ss.

County of _______________ )
(name of person signing affidavit), being first duly
sworn, deposes and says under penalty of perjury under the laws of the State of California, that he or she has the right, power, legal capacity, and authority to execute this Affidavit as (sole owner, partner, president, secretary, etc.) of
(legal name of Bidder), the Bidder, that the
Bid is not made in the interest of, or on behalf of, any undisclosed person, partnership, company, association, organization, or corporation; that the Bid is genuine and not collusive or sham; that the Bidder has not directly or indirectly induced or solicited any other Bidder to put in any false or sham Bid, and has not directly or indirectly colluded, conspired, connived, or agreed with any Bidder or anyone else to put in a sham Bid, or that anyone shall refrain from Bidding; that the Bidder has not in any manner, directly or indirectly, sought by agreement, communication, or conference with anyone to fix the Bid price of the Bidder or any other Bidder, or to fix any overhead, profit, or cost element of the Bid price, or of that of any other Bidder, or to secure any advantage against the public body awarding the Contract or anyone interested in the proposed Contract; that all statements contained in the Bid are true; and, further, that the Bidder has not, directly or indirectly, submitted his Bid price or any breakdown thereof, or the contents thereof, or divulged information or data relative thereto, or paid, and will not pay, any fee to any corporation, partnership, company association, organization, Bid depository, or to any member or agent thereof to effectuate a collusive or sham Bid.

IN WITNESS WHEREOF, the undersigned, as bidder, represent and warrant that they have the right, power, legal capacity, and authority to enter into and execute this document on behalf of the Bidder, and have executed this document by setting hereto their names, titles and signature. (Signature of Representative of Bidder)
Subscribed and sworn to before me, a Notary Public in and for the State of California, County of _____________________, this ______ day of _________________, 20____.

Signature of Notary Public:________________________
My Commission expires __________________, 20_____ (Seal) NOTE: THIS AFFIDAVIT MUST BE COMPLETED AND RETURNED AS PART OF THE CONTRACTOR’S BID PROPOSAL.

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BIDDER’S QUALIFICATIONS
The following statements as to the financial qualifications and experience of the Bidder are submitted as a part of this Bid and the Bidder guarantees the truthfulness and accuracy of the information. Pursuant to Public Contract Code 10165, financial statements and experience questionnaires are not public records and are not open to public inspection.

Financial Data
Reference is hereby made to the following bank or banks as to the financial responsibility of the bidder.

NAME OF BANK ADDRESS
Experience Data
The Bidder has been engaged in the contracting business, under the present business name for ________ years. Experience in work of a nature similar to that covered in this Bid extends over a period of __________ years.

The Bidder as a Contractor has never failed to satisfactorily complete a contract awarded to him, except as follows: (Name all exceptions and reasons therefore):

Bidder’s Personnel
The following is a list of key personnel including an listing of the person’s knowledge, ability or trade along with a brief description of their experience. If Bidder is awarded the Contract, it is understood that the work will be directed and actively supervised by one of these persons.

List of Personnel Knowledge/Skills Experience
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Bidder’s Responsibility
Bidder will be immediately disqualified if the answer to questions 1 and 2 below is “No”.

Bidder will be immediately disqualified if the answer to any of questions 3 through 8 below is “Yes”.

In addition, the Bidder may be disqualified depending on the additional information provided based on responses required in questions 9 through 14 below. Bidder does not waive its rights and remedies, as provided by law, to appeal if disqualified due to the additional information provided

1. 2.

3. Bidder possesses a valid and current California Contractor’s License as required by Specification for the Project for which it intends to submit a Bid.

Yes No
Bidder will comply with and provide all insurance as defined in the bid documents, LIABILITY AND INSURANCE.

Yes No
Has Bidder violated the Storm Water Best Management Practices for illegal or improper discharge(s) into storm drain systems two (2) or more times within the past five (5) years?
Yes No
NOTE: This question refers to your firm’s violation of sewer overflow to the storm drain system that was reported to the State Water Board by Public Agency.

4. 5.

Has a surety firm completed a Contract on your behalf, or paid for completion because your firm was in default or terminated by the project Owner within the last five (5) years? Yes No
At the time of submitting this qualification form, is your firm ineligible to bid on or be awarded a public works contract, or perform as a subcontractor on a public works Contract, pursuant to either Labor Code Section 1777.1 or Labor Code Section 1777.7? Yes No

6. 7.

At any time during the last five (5) years, has your firm, or any of its owners or officers been convicted of a crime involving the awarding of a contract of a construction project, or the bidding or performance of a government contract? Yes No
Is your firm currently the debtor in a bankruptcy case? Yes No
If “Yes,” please attach a copy of the bankruptcy petition, showing the case number, and the date on which the petition was filed.

8. Was your firm in bankruptcy at any time during the last five years? (This question refers only to a bankruptcy action that was not described in answer to question 8, above.)
Yes No
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If “Yes,” please attach a copy of the bankruptcy petition, showing the case number and the date on which the petition was filed, and a copy of the Bankruptcy Court’s discharge order, or of any other document that ended the case, if no discharge order was issued.

9. In the last five years has your firm, or any firm with which any of your company’s owners, officers or partners was associated, been debarred, disqualified, removed or otherwise prevented from bidding on, or completing, any government agency or public works project for any reason?
NOTE: “Associated with” refers to another construction firm in which an owner, partner or officer of your firm held a similar position.

Yes No
If “Yes,” explain on a separate signed page. State whether the firm involved was the firm applying for pre-qualification here or another firm. Identify by name of the company, the name of the person within your firm who was associated with that company, the year of the event, the owner of the project, the project and the basis for the action.

10. 11.

In the last five years has your firm been denied an award of a public works contract based on a finding by a public agency that your company was not a responsible bidder?
Yes No
If “Yes,” explain on a separate signed page. Identify the year of the event, the owner, the project and the basis for the finding by the public agency.

Has CAL OSHA cited and assessed penalties against your firm for any “serious,” “willful” or “repeat” violations of its safety or health regulations in the past five years? NOTE: If you have filed an appeal of a citation, and the Occupational Safety and Health Appeals Board has not yet ruled on your appeal, you need not include information about it.

Yes No
If “Yes,” attach a separate signed page describing the citations, including information about the dates of the citations, the nature of the violation, the project on which the citation(s) was or were issued, the amount of penalty paid, if any. If the citation was appealed to the Occupational Safety and Health Appeals Board and a decision has been issued, state the case number and the date of the decision.

12. Has the federal Occupational Safety and Health Administration cited and assessed penalties against your firm in the past five years?
NOTE: If you have filed an appeal of a citation and the Appeals Board has not yet ruled on your appeal, or if there is a court appeal pending, you need not include information about the citation.

Yes No
If “Yes,” attach a separate signed page describing each citation.

13. Has there been more than one occasion during the last five years in which your firm was required to pay either back wages or penalties for your own firm’s failure to comply Bid Proposal
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with California’s prevailing wage laws?
NOTE: This question refers only to your own firm’s violation of prevailing wage laws, not to violations of the prevailing wage laws by a subcontractor.

Yes No
If “Yes,” attach a separate signed page or pages, describing the nature of each violation, identifying the name of the project, the date of its completion, the public agency for which it was constructed; the number of employees who were initially underpaid and the amount of back wages and penalties that you were required to pay.

14. During the last five years, has there been more than one occasion in which your own firm has been penalized or required to pay back wages for failure to comply with the federal Davis-Bacon prevailing wage requirements?
Yes No
If “Yes,” please attach a separate signed page or pages describing the nature of the violation, identifying the name of the project, the date of its completion, the public agency for which it was constructed; the number of employees who were initially Safety Qualification Criteria
The following information will be used to determine if the Bidder meets the minimum safety requirements for this Project:

1. To qualify to Bid and be awarded the Project, the Bidder’s three year average Workers’ Compensation Experience Modification Rate (EMR) must not be greater than 1.10 (110%). The Bidder shall list its EMR for the last three complete years based on the effective date of the rating (available from your insurance carrier).

2. If the Bidder’s three-year average EMR is greater than 1.10 (110%), the Bidder’s three- year average Recordable Incident Rate (RIR) must not be greater than 3.5 (350%) and three-year average Lost Time Incident Rate (LTIR) must not be greater than 1.10 (110%) to meet the minimum safety requirements for this Project;

3. If the Bidder only meets either the three-year average RIR or LTIR value, the Bidder shall be required to hire at no additional cost to the Agency a mutually acceptable safety consultant who will prepare a project specific safety plan, conduct random weekly inspections of the Bidder’s activities to ensure conformance with the safety plan and prepare and submit a weekly report to the City summarizing the results of each inspection.

The Bidder shall adhere to the safety plan. The Bidder’s activities shall be adjusted immediately to address any issues resulting from the weekly safety inspection.

Bidders that cannot meet any of the three safety criteria above are not eligible to work for the City.

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The Bidder shall list its Experience Modification Rate, Lost time Incident Rate, and Recordable Incident Rate for the last three complete years (available from your insurance carrier).

Year EMR RIR LTIR

AVERAGE
To verify the above information, the City will contact the Bidder’s Workers’ Compensation Insurance carrier. The Bidder shall authorize its carrier to release this information. Failure to release this information will result in the Bid being non-responsive and result in automatic disqualification of the Bid.

Workers’ Compensation Insurance Company:____________________________________ Contact Person for Insurance Company:________________________________________ Telephone Number:________________________________________________________ The undersigned hereby states that all representations regarding the Bidder’s Experience and Qualifications are correct and true.

Signed this day of , 20_____.

Contractor:
(Print or Type Contractor’s Legal Name)
Signature:

Signed By:
(Print or Type Name)
Contractor’s License No.:

Expiration Date:

Address:
_
Telephone Number:

Email Address:

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BIDDER’S REFERENCE
List three (3) major projects which the Bidder has performed comparable work within the last three (3) years. Provide a contact person and description of the project, or other such information that will demonstrate the ability to vigorously prosecute the work.

1. PROJECT NAME LOCATION YEAR COMPLETED
AGENCY CONTACT PERSON TELEPHONE NO. FINAL CONSTRUCTION COST

BRIEF DESCRIPTION OF THE WORK AND/OR MANNER OF EXECUTION

2. PROJECT NAME LOCATION YEAR COMPLETED
AGENCY CONTACT PERSON TELEPHONE NO. FINAL CONSTRUCTION COST

BRIEF DESCRIPTION OF THE WORK AND/OR MANNER OF EXECUTION

3. PROJECT NAME LOCATION YEAR COMPLETED
AGENCY CONTACT PERSON TELEPHONE NO. FINAL CONSTRUCTION COST

BRIEF DESCRIPTION OF THE WORK AND/OR MANNER OF EXECUTION Bid Proposal
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SIGNATURE PAGES
The terms and conditions of the final contract when executed shall control and supersede anything herein to the contrary or inconsistent with such contract.

The bidder states that he has inspected the site of the propose work in order to satisfy himself, by personal examination, or by such other means as he prefers, of the location of the proposed work and as to the actual conditions of and at the work site. The bidder hereby offers to furnish all labor, materials, equipment, transportation, and services necessary to complete the work on this project in accordance with the Contract Documents and to complete all requirements of the Contract Documents for the sums quoted in this Bid.

Addenda:
(if any) bidder has received and examined all addenda issued during the bid period and agrees that all addenda shall be made a part of the Contract Documents. The bidder acknowledges receipt and incorporation of all impacts resulting from all addenda issued by inserting the number of each addendum below OR by signing and submitting with the bid proposal the signature page from each addendum.

Addendum Nos. _____, _____, _____, _____, _____, _____, _____, _____ Bidder’s Guarantee:

In accordance with Public Contract Code Section 20170, accompanying this Bid is _______________ (insert the word “Cash”, “Cashier’s Check”, “Certified Check” or “Bidder’s Bond” as the case may be) made payable to the City of San Carlos in the amount of ___________________________________________________($_______________) equal to at least ten percent (10%) of the total amount of this bid. This amount is given as a guarantee that, in case the undersigned defaults in executing a contract and/or furnishing the necessary bonds after contract award, the said guarantee and the money payable thereon shall become and remain the property of the City as liquidated damages.

Company Profile:

The names of all persons interested in the foregoing bid as principals are as follows:
(Note: If bidder or other interested person is a corporation, state the legal name of corporation, also names of the president, secretary, treasurer and manager thereof; if partnership, state true name of firm, also names of all individual partners composing firm; if bidder or other interested person is an individual, state first and last name in full).

Firm Name:

Business Address:

Names and Titles of Company Officers:

1. 2.

3. 4.

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Proposal Execution:

IN WITNESS WHEREOF, the undersigned, as bidder, represent and warrant that they have the right, power, legal capacity and authority to enter into and execute this document on behalf of the Bidder, and have executed this document by setting hereto their names, titles, and signatures. The representations made herein, including but not limited to the above contractor’s license, expiration date and name of bidder, are true and correct, shall be complied with and are made under penalty of perjury.

IF SOLE OWNER, sign here:

I sign as sole owner of the business named above.___________________________ Social Security Number:_________________________________________________ Employer Identification Number:___________________________________________ IF PARTNERSHIP, sign here:

The undersigned certify that we are partners in the business named above and that we sign this contract proposal with full authority to do so. (one or more partners sign) ______________________________________________________________________ ______________________________________________________________________ Federal Tax Identification No. (EIN):_________________________________________ State Tax Identification No.:_______________________________________________ IF CORPORATION, execute here:

The undersigned certify that they sign this contract proposal with full and proper authorization to do so.

Corporate name _________________________________________________________ By_____________________________________ (Title) _________________________ By_____________________________________ (Title) _________________________ Incorporated under the laws of the State of ___________________________________ Federal Tax Identification No. (EIN):_________________________________________ State Tax Identification No.:_______________________________________________ Subscribed and sworn to before me, a Notary Public in and for the State of California, County of _____________________, this ______ day of _________________, 20____.

Signature of Notary Public:________________________
My Commission expires __________________, 20_____ (Seal) Bid Proposal
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BIDDER’S BOND
To Accompany Contract Proposal
KNOW ALL PERSONS BY THESE PRESENTS:

That we, the undersigned _________________________________________, as principal and __________________________________, as surety, are held and firmly bound unto the City of San Carlos as OWNER in the penal sum of TEN PERCENT (10%) of the total amount of the bid of the principal, for the payment of which, well and truly to be made, we hereby jointly and severally bind ourselves, successors and assigns.

The condition of the above obligation is such that whereas the Principal has submitted to OWNER a certain BID attached hereto and hereby made a part hereof to enter into a contract in writing, for the 2023 Sewer Rehabilitation Project, Project No. C9617.

NOW, THEREFORE
(a) If said BID shall be rejected, or
(b) If said BID shall be accepted and the Principal shall execute and deliver a contract in the Form of Contract attached hereto (properly completed in accordance with said BIDS including all required bonds for faithful performance and labor and material, as well as all required evidence of insurance) then this obligation shall be void, otherwise the same shall remain in force and effect.

In the event the City brings suit upon this Bond, surety shall pay reasonable attorney’s fees and costs incurred by the City in such suit.

The Surety, for value received, stipulates and agrees that the obligations of said Surety and its BOND shall be in no way impaired or affected by any extension of the time within which the City of San Carlos may accept such BID; and said Surety does hereby waive notice of any such extension.

IN WITNESS WHEREOF, the Principal and the Surety have hereunto set their hands and seals, and such of them as are corporations have caused their corporate seals to be hereto affixed and these presents to be signed by their proper officers, this day and year first set forth.

By: (L.S.) By:
(Principal) (Seal) (Surety) (Seal)
Subscribed and sworn to before me, a Notary Public in and for the State of California, County of _____________________, this ______ day of _________________, 20____.

Signature of Notary Public:________________________ (Seal) My Commission expires __________________, 20_____
IMPORTANT: Surety companies executing BONDS must be authorized to transact Surety insurance in the State of California. If Contractor is Partnership, all partners should execute BOND.

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AGREEMENT AND AGREEMENT FORMS

TABLE OF CONTENTS
Agreement for Public Projects .................................................................................... A-2 Exhibit A: Contractor’s Bid Proposal ......................................................................... A-9 Exhibit B: Insurance Coverage .................................................................................. A-10 Resolution of Construction Claims.............................................................................. A-11 Agreement Forms
Payment Bond................................................................................................. A-13 Performance Bond .......................................................................................... A-15 Workers Compensation Certification .............................................................. A-17 Certification of Safety Requirements for Contractors and Vendors ................ A-18 Drug Free Workplace Certification.................................................................. A-19 Escrow Agreement for Security Deposits in Lieu of Retention (Optional)....... A-20 Guarantee ....................................................................................................... A-22 Agreement and Agreement Forms
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AGREEMENT FOR PUBLIC PROJECTS
This Agreement is made and entered into as of __________________ by and between the City of San Carlos hereinafter called "CITY" and ____________________ hereinafter called "CONTRACTOR.”

RECITALS
This Agreement is entered into with reference to the following facts and circumstances:

That CITY desires to engage CONTRACTOR to provide a product and/or services to the CITY;
That CONTRACTOR is qualified to provide the product and/or services to the CITY and; THEREFORE, the CITY has elected to engage CONTRACTOR upon the terms and conditions as hereinafter set forth.

1. Services. The services to be performed by CONTRACTOR under this Agreement are described in Exhibit A, the CONTRACTOR’S bid proposal which is, by this reference, incorporated herein and made a part hereof as though it were fully set forth herein.

Performance of the services specified in said Exhibit is hereby made an obligation of CONTRACTOR under this Agreement, subject to any changes that may be made subsequently hereto upon the mutual written agreement of the said parties.

Where in conflict, the terms of this Agreement supersede and prevail over any terms set forth in Exhibit A.

2. Term; Termination. (a) The term of this Agreement shall commence upon the date hereinabove written and shall expire upon the date enumerated in Exhibit A, delivery of the product or completion of performance of services hereunder by CONTRACTOR, whichever date shall first occur. (b) Notwithstanding the provisions of (a) above, CITY may terminate this Agreement without cause by giving written notice not less than thirty (30) days prior to the effective date of termination, which date shall be included in said notice. CITY shall compensate CONTRACTOR for any product delivered and/or for services rendered, and reimburse CONTRACTOR for costs and expenses incurred, to the date of termination, calculated in accordance with the provisions of paragraph 3. In ascertaining the services actually rendered to the date of termination, consideration shall be given both to completed work and work in process of completion. Nothing herein contained shall be deemed a limitation upon the right of CITY to terminate this Agreement for cause, or otherwise to exercise such rights or pursue such remedies as may accrue to CITY hereunder.

3. Compensation; Expenses; Payment. CITY shall compensate CONTRACTOR for all products supplied or services performed by CONTRACTOR hereunder as shown in Exhibit A attached hereto and by this reference incorporated herein.

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Notwithstanding the foregoing, the combined total of compensation and reimbursement of costs payable hereunder shall not exceed the sum of __________________$_________, as provided in the approved bid documents or in this Agreement unless additional amounts have been authorized in the acceptance of the bid and approved in advance of supplying the product, performing the services or incurring the costs and expenses by CITY’s City Manager (for contracts less than $175,000 or authorized by City Council action for contracts $175,000 or more by motion duly made and carried).

Compensation and reimbursement of costs and expenses hereunder shall be payable upon CONTRACTOR meeting contract milestones as defined in Exhibit A. Billing shall include an itemized statement, briefly describing by task and labor category or cost/expense items billed.

4. 5.

Contractor affirms that its employees and contractors comply with California Prevailing Wage Law.

Additional Services. In the event the public project requires the delivery of additional products or performance of additional services not otherwise included within Exhibit A, such products or services must be authorized in advance by CITY’s City Manager (for contracts less than $175,000 or authorized by City Council action for contracts $175,000 or more. Such amendment to this Agreement shall include a description of the project or services to be performed thereunder, the maximum compensation and reimbursement of costs and expenses payable therefore, the time of performance thereof, and such other matters as the parties deem appropriate. Any additional services causing the total contract price to exceed $175,000, shall require approval by the City Council. Except to the extent modified by written amendment, all other terms and conditions of this Agreement shall be deemed incorporated in each such amendment.

6. Records. CONTRACTOR shall keep and maintain accurate records of products delivered or of all time expended in performing services and costs and expenses incurred relating thereto. Said records shall be available to CITY for review and copying during regular business hours at CONTRACTOR’s place of business or as otherwise agreed upon by the parties.

7. 8.

Authorization. This Agreement becomes effective when endorsed by both parties in the space provided below.

Reliance on Specialized Professional Skill of CONTRACTOR. CONTRACTOR represents that it has the necessary professional skills to perform the services required and the CITY shall rely on such specialized skills of the CONTRACTOR to do and perform the work. In performing services hereunder CONTRACTOR shall adhere to the standards generally prevailing for the performance of services similar to those to be performed by CONTRACTOR hereunder.

9. Documents. All documents, plans, drawings, renderings, and other papers, or copies thereof, as finally rendered, prepared by CONTRACTOR pursuant to the terms of this Agreement, shall, upon preparation and delivery to CITY, become the property of CITY
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10. 11.

Relationship of Parties. It is understood that the relationship of CONTRACTOR to the CITY is that of an independent contractor and all persons working for or under the direction of CONTRACTOR are its agents or employees and not agents or employees of the CITY.

Schedule. CONTRACTOR shall adhere to the schedule set forth in Exhibit A; provided, that CITY shall grant reasonable extensions of time for the delivery of products or performance of services occasioned by governmental reviews of CONTRACTOR’s work product or other unavoidable delays; provided, further, that such unavoidable delay shall not include strikes, lockouts, work stoppages, or other labor disturbances conducted by, or on behalf of, CONTRACTOR’s officers or employees.

CONTRACTOR acknowledges the importance to CITY of timely delivery of products or services and agrees to put forth its best professional efforts to perform in a manner consistent with that schedule.

12. Indemnity. CONTRACTOR shall indemnify, defend, and hold harmless City, its officers, employees, agents and volunteers from and against all liability, loss, damage, expense, and cost (including, without limitation, reasonable legal counsel fees, expert fees and all other costs and fees of litigation) of every nature arising out of or in connection with CONTRACTOR’s negligence, recklessness, or willful misconduct in the performance of work hereunder, or its failure to comply with any of its obligations contained in this Agreement, except such loss or damage caused by the active negligence or willful misconduct of the City. It is expressly understood and agreed that the foregoing provisions are intended to be as broad and inclusive as is permitted by the law of the State of California and will survive termination of this Agreement.

Nothing herein contained shall be construed to require CONTRACTOR to indemnify CITY, its officers, employees, agents and volunteers against any responsibility or liability in contravention of Section 2782 of the California Civil Code.

13. Insurance. CONTRACTOR shall acquire and maintain Workers’ Compensation, employer’s liability, commercial general liability, owned and non-owned and hired automobile liability insurance coverage relating to CONTRACTOR’s services to be performed hereunder covering CITY’s risks in form subject to the approval of the City Attorney and/or CITY’s Risk Manager. The minimum amounts of coverage corresponding to the aforesaid categories of insurance per insurable event shall be as follows:

Insurance Category
Workers’ Compensation
Employer’s Liability
Minimum Limits
statutory minimum
$1,000,000 per accident for bodily
injury or disease. Contractor shall
submit to City a Waiver of
Subrogation endorsement in favor of
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City, its officers, agents, employees,
and volunteers.

Commercial General Liability $5,000,000 per occurrence for Liability bodily injury, personal
injury, and property damage,
including without limitation, blanket
contractual liability and coverage for
explosion, collapse and underground
property damage hazards. If a
general aggregate limit applies,
either the general aggregate limit
shall apply separately to this
project/location or the general
aggregate limit shall be twice the
required occurrence limit. Coverage
must be at least as broad as
Insurance Services Office form CG
00 01.

Automobile Liability $5,000,000 per accident for bodily injury
(coverage required to the extent
applicable to CONTRACTOR’s
and property damage
vehicle usage in performing services
hereunder)
Concurrently with the execution of this Agreement, CONTRACTOR shall furnish CITY with certificates and copies of information or declaration pages of the insurance required hereunder and, with respect to evidence of commercial general liability and automobile liability insurance coverage, original endorsements:
(a) Precluding cancellation or reduction in per occurrence limits before the expiration of thirty (30) days (10 days for nonpayment) after CITY shall have received written notification of cancellation in coverage or reduction in per occurrence limits by first class mail;
(b) Contractor’s general liability policies shall be primary and non-contributory, and be endorsed using Insurance Services Office form CG 20 10 to provide that City and its officers, officials, employees, and agents shall be additional insureds under such policies. An endorsement providing completed operations coverage for the additional insured, ISO form CG 20 37, is also required.

Claims Made Policies
If any of the required policies provide claims-made coverage:

1. The Retroactive Date must be shown, and must be before the date of the contract or the beginning of contract work.

2. Insurance must be maintained and evidence of insurance must be provided for at least five (5) years after completion of the contract of work.

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3. If coverage is canceled or non-renewed, and not replaced with another claims-made policy form with a Retroactive Date prior to the contract effective date, the CONTRACTOR must purchase “extended reporting” coverage for a minimum of five (5) years after completion of contract work.

Verification of Coverage
CONTRACTOR shall furnish the CITY with original certificates and amendatory endorsements effecting coverage required by this clause. All certificates and endorsements are to be received and approved by the CITY before work commences. However, failure to obtain the required documents prior to the work beginning shall not waive the CONTRACTOR’s obligation to provide them. The CITY reserves the right to require complete, certified copies of all required insurance policies, including endorsements required by these specifications, at any time.

Waiver of Subrogation
CONTRACTOR hereby grants to CITY a waiver of any right to subrogation which any insurer of said CONTRACTOR may acquire against the CITY by virtue of the payment of any loss under such insurance. This provision applies regardless of whether or not the CITY has requested or received a waiver of subrogation endorsement from the insurer.

Acceptability of Insurers
Insurance is to be placed with insurers with a current A.M. Best’s rating of no less than A:VII, unless otherwise acceptable to the City.

Special Risks or Circumstances
CITY reserves the right to modify these requirements, including limits, based on the nature of the risk, prior experience, insurer, coverage, or other special circumstances.

Coverage
It is a requirement under this agreement that any available insurance proceeds broader than or in excess of the specified minimum insurance coverage requirements and/or limits shall be made available to the Additional Insured and shall be (1) the minimum coverage and limits specified in this Agreement; or (2) the broader coverage and maximum limits of coverage of any insurance policy, whichever is greater.

CONTRACTOR shall maintain insurance as required by this contract to the fullest amount allowed by law and shall maintain insurance for a minimum of five years following completion of the project. In the event contractor fails to obtain or maintain completed operations coverage as required by this agreement, the city at its sole discretion may purchase the coverage required and the cost shall be paid by CONTRACTOR.

Primary and Non-Contributory Coverage
The Additional Insured coverage under the CONTRACTOR’s policy shall be “primary and non-contributory” as will not seek contribution from the CITY insurance or self-insurance and shall be at least as broad as CG 20 01 04 12.

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Excess Insurance
The limits of insurance required in this agreement may be satisfied by a combination of primary and umbrella or excess insurance. Any umbrella or excess insurance shall contain or be endorsed to contain a provision that such coverage shall also apply on a primary and noncontributory basis for the benefit of CITY before the CITY insurance or self-insurance shall be called upon to protect it as a named insured.

14. SUBCONTRACTORS. CONTRACTOR agrees to include with all subcontractors in their subcontracts the same requirements and provisions of this agreement including the indemnity and Insurance requirements to the extent they apply to the scope of the Subcontractors’ work. Subcontractors hired by CONTRACTOR agree to be bound to CONTRACTOR and CITY in the same manner and to the same extent as CONTRACTOR is bound to CITY under the Contract documents.

Subcontract shall agree to include these same provisions in any agreement with a sub-subcontractor. CONTRACTOR shall require all subcontractors to provide a valid certificate of insurance and the required endorsements included in the agreement prior to commencement of any work and will provide proof of compliance to the CITY.

Subcontractor shall agree to be bound to CONTRACTOR and CITY in the same manner and to the same extent as CONTRACTOR is bound to CITY under the Contract Documents. Subcontractor shall further agree to include the same requirements and provisions of this agreement, including the indemnity and Insurance requirements, with a Sub-subcontractor to the extent they apply to the scope of the Sub-subcontractors’ work. A copy of the CITY Contract Document Indemnity and Insurance provisions shall be furnished to the subcontractor upon request.

15. 16.

WORKERS' COMPENSATION. CONTRACTOR certifies that he/she/it is aware of the provisions of the Labor Code of the State of California which require every employer to be insured against liability for workers' compensation or to undertake self-insurance in accordance with the provisions of that Code, and CONTRACTOR certifies that he will comply with such provisions before commencing the performance of the work of this agreement.

NON-DISCRIMINATION. The CONTRACTOR hereby assures that it will comply with Subchapter VI of the Civil Rights Act of 1964, 42 USC Section 2000 (e)(17), to the end that CONTRACTOR will not exclude any person from participation in, be denied the benefits of, or be otherwise subject to discrimination from any project, program, or activity supported by this Agreement, based on the grounds of race, color, national origin, sex, disability, age, or religion,. CONTRACTOR shall comply with its EEO Certification (Form PW-7). In addition, CONTRACTOR will not discriminate against any employee or applicant for employment because of race, color, religion, sex or national origin. The CONTRACTOR will take affirmative action to insure that applicants are employed and the employees are treated during employment without regard to their race, color, religion, sex or national origin. Such action shall include, but not be limited to the following:
employment, advancement, demotion, transfer, recruitment, or recruitment advertising, layoff or termination, rates of pay or other forms of compensation, and selection for training, including apprenticeship. The CONTRACTOR shall at all Agreement and Agreement Forms
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times be in compliance with the requirements of the Federal Americans With Disabilities Act (Public Law 101-336) which prohibits discrimination on the basis of disability by public entities. The CONTRACTOR agrees to post in conspicuous places available to employees and applicants for employment any notices provided by the CITY setting forth the provisions of this non-discrimination clause.

17. Notice. All notices required by this Agreement shall be given to the CITY and CONTRACTOR in writing, by first class mail, postage prepaid, addressed as follows:

CITY: City of San Carlos
600 Elm Street
San Carlos, CA 94070
Attention:

CONTRACTOR: _____________________
Address
Phone
Attention: ______________

18. 19.

Non-Assignment. This Agreement is not assignable either in whole or in part.

Amendments. This Agreement may be amended or modified only by written agreement signed by both parties.

20. 21.

22. Business Registration. CONTRACTOR agrees to comply with Chapter 5.04 of the Municipal Code and pay all fees required to be paid.

Validity. The invalidity in whole or in part of any provision of this Agreement shall not void or affect the validity of any other provision of this Agreement.

Governing Law. This Agreement shall be governed by the laws of the State of California and any suit or action initiated by either party shall be brought in the County of San Mateo, California. In the event of litigation between the parties hereto to enforce any provision of the Agreement, the unsuccessful party will pay the reasonable attorney’s fees and expenses of litigation of the successful party.

23. Mediation. Should any dispute arise out of this Agreement, the parties shall meet in mediation and attempt to reach a resolution with the assistance of a mutually acceptable mediator. Neither party shall be permitted to file legal action without first meeting in mediation and making a good faith attempt to reach a mediated resolution. The costs of the mediator, if any, shall be paid equally by the parties.

If a mediated settlement is reached neither party shall be deemed the prevailing party for purposes of the settlement and each party shall bear its own legal costs.

If a party refuses or fails to participate in mediation in good faith prior to filing a lawsuit, then that party shall be barred from recovery of attorneys fees and costs of suit.

24. Conflict of Interest. CONTRACTOR may serve other clients, but none who are active within the City of San Carlos or who conduct business that would place CONTRACTOR in a "conflict of interest" as that term is defined in State law.

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25. Entire Agreement. Each party acknowledges that this agreement, the exhibits hereto, and the documents incorporated by reference herein constitute the complete agreement and exclusive statement of the terms and conditions between the parties, which supercedes and merges all prior proposals, understandings and all other agreements, verbal and written, between the parties relating to the subject matter of this agreement. This agreement may not be modified or altered except by written instrument duly executed by both parties.

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed on the date first above written by their respective officers duly authorized in that behalf.

CITY OF SAN CARLOS:

Dated: _______________
Dated: _______________
Dated: _______________
______________________________
Jeff Maltbie, City Manager
ATTEST:
______________________________
Crystal Mui, City Clerk
APPROVED AS TO FORM:
______________________________
Gregory J. Rubens, City Attorney
CONSULTANT/CONTRACTOR/VENDOR:

I acknowledge that I have full authority to execute this agreement on behalf of the Consultant/Contractor/Vendor, and have read, understand, and agree to comply with the provisions of this Agreement, including the Insurance and indemnity requirements set forth herein.

Dated: _______________ ______________________________
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EXHIBIT A
CONTRACTOR’S BID PROPOSAL
[To be attached]
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EXHIBIT B
This INSURANCE COVERAGE FORM modifies or documents insurance provided under the following:

Named Insured: Effective Work Date(s):

Description of Work/Locations/Vehicles:

ADDITIONAL INSURED: City of San Carlos
600 Elm Street, San Carlos, CA 94070
Attention: _________________________________
Contract Administrator
Endorsement and Certificates of Insurance Required
The Additional Insured, its elected or appointed officers, officials, employees and volunteers are included as insureds with regard to damages and defense of claims arising from: (Check all that apply) Insurer Policy No.

General Liability: (a) activities performed by or on behalf of the Named Insured, (b) products and completed operations of the Named Insured, (c) premises owned, leased occupied or used by the Named Insured, and/or (d) permits issued for operations performed by the Named Insured. {Note:

MEETS OR EXCEEDS ISO Form # CG 20 10 11 85}
Auto Liability: the ownership, operation, maintenance, use, loading or unloading of any auto owned, leased, hired or borrowed by the Named Insured, regardless of whether liability is attributable to the Named Insured or a combination of the Named Insured and the Additional Insured, its elected or appointed officers, officials, employees or volunteers.

Other:

Certificates of Insurance Required (no endorsement needed) (Check all that apply)
Insurer Policy No.

Workers Compensation: work performed by employees of the Named Insured while those employees are engaged in work under the simultaneous directions and control of the Named Insured and the Additional Insured.

Professional Liability:

PRIMARY/NON-CONTRIBUTORY: This insurance is primary and is not additional to or contributing with any other insurance carried by or for the benefit of Additional Insureds.

SEVERABILITY OF INTEREST: The insurance afforded by this policy applies separately to each insured who is seeking coverage or against whom a claim is made or a suit is brought, except with respect to the insurer’s limit of liability.

PROVISIONS REGARDING THE INSURED'S DUTIES AFTER ACCIDENT OR LOSS: Any failure to comply with reporting provisions of the policy shall not affect coverage provided to the Additional Insured, its elected or appointed officers, officials, employees, or volunteers.

CANCELLATION NOTICE. The insurance afforded by this policy shall not be suspended, voided, canceled, reduced in coverage or in limits except after thirty (30) days' prior written notice (ten (10) days if canceled due to non-payment) by regular mail return receipt requested has been given to the Additional Insured. Such notice shall be addressed as shown above.

WAIVER OF SUBROGATION: The insurer(s) named above agree to waive all rights of subrogation against the CITY/Public Works Department, its elected or appointed officers, officials, agents, volunteers and employees for losses paid under the terms of this policy which arise from work performed by the Named Insured for the CITY/Public Works Department.

Nothing herein contained shall vary, alter or extend any provision or condition of the Policy other than as above stated.

SIGNATURE OF INSURER OR AUTHORIZED REPRESENTATIVE OF THE INSURER I, _______________________________________________________________(print/type name), warrant that I have authority to bind the above-named insurance company and by my signature hereon do so bind this company. ________________________________________________________________ SIGNATURE OF AUTHORIZED REPRESENTATIVE (original signature required) _____________________

DATE ISSUED
ORGANIZATION:_________________________________________TITLE:______________________________ ADDRESS: _____________________________________________ TELEPHONE: ( ) _______ Agreement and Agreement Forms
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RESOLUTION OF CONSTRUCTION CLAIMS
Any public works claims arising under this contract which the Contractor wishes to assert against the Governing Agency shall be governed by California Public Contract Code Section 9204. Claims which do not exceed three hundred seventy-five thousand dollars ($375,000) are also subject to the provisions of Article 1.5 of the California Public Contract Code (commencing with Section 20104).

California Public Contracts Code Section 9204, claims shall be resolved as follows:

Pursuant to
(d) (1) (A) Upon receipt of a claim pursuant to this section, the public entity to which the claim applies shall conduct a reasonable review of the claim and, within a period not to exceed 45 days, shall provide the claimant a written statement identifying what portion of the claim is disputed and what portion is undisputed.

Upon receipt of a claim, a public entity and a contractor may, by mutual agreement, extend the time period provided in this subdivision.
(B) The claimant shall furnish reasonable documentation to support the claim. (C) If the public entity needs approval from its governing body to provide the claimant a written statement identifying the disputed portion and the undisputed portion of the claim, and the governing body does not meet within the 45 days or within the mutually agreed to extension of time following receipt of a claim sent by registered mail or certified mail, return receipt requested, the public entity shall have up to three days following the next duly publicly noticed meeting of the governing body after the 45-day period, or extension, expires to provide the claimant a written statement identifying the disputed portion and the undisputed portion.
(D) Any payment due on an undisputed portion of the claim shall be processed and made within 60 days after the public entity issues its written statement. If the public entity fails to issue a written statement, paragraph (3) shall apply.
(2) (A) If the claimant disputes the public entity’s written response, or if the public entity fails to respond to a claim issued pursuant to this section within the time prescribed, the claimant may demand in writing an informal conference to meet and confer for settlement of the issues in dispute. Upon receipt of a demand in writing sent by registered mail or certified mail, return receipt requested, the public entity shall schedule a meet and confer conference within 30 days for settlement of the dispute. (B) Within 10 business days following the conclusion of the meet and confer conference, if the claim or any portion of the claim remains in dispute, the public entity shall provide the claimant a written statement identifying the portion of the claim that remains in dispute and the portion that is undisputed. Any payment due on an undisputed portion of the claim shall be processed and made within 60 days after the public entity issues its written statement. Any disputed portion of the claim, as identified by the contractor in writing, shall be submitted to nonbinding mediation, with the public entity and the claimant sharing the associated costs equally. The public entity and claimant shall mutually agree to a mediator within 10 business days after the disputed portion of the claim has been identified in writing. If the parties cannot agree upon a mediator, each party shall select a mediator and those mediators shall select a qualified neutral third party to mediate with regard to the disputed portion of the claim. Each party shall bear the fees and costs charged by its respective mediator in connection with the selection of the neutral mediator. If mediation is unsuccessful, the parts of the claim remaining in dispute shall be subject to applicable procedures outside this section.
(C) For purposes of this section, mediation includes any nonbinding process, including, but not limited to, neutral evaluation or a dispute review board, in which an independent third party or board assists the parties in dispute resolution through negotiation or by issuance of an evaluation. Any mediation utilized shall conform to the timeframes in this section.
(D) Unless otherwise agreed to by the public entity and the contractor in writing, the mediation conducted pursuant to this section shall excuse any further obligation under Section 20104.4 to mediate after litigation has been commenced.

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(E) This section does not preclude a public entity from requiring arbitration of disputes under private arbitration or the Public Works Contract Arbitration Program, if mediation under this section does not resolve the parties’ dispute.
(3) Failure by the public entity to respond to a claim from a contractor within the time periods described in this subdivision or to otherwise meet the time requirements of this section shall result in the claim being deemed rejected in its entirety. A claim that is denied by reason of the public entity’s failure to have responded to a claim, or its failure to otherwise meet the time requirements of this section, shall not constitute an adverse finding with regard to the merits of the claim or the responsibility or qualifications of the claimant.
(4) Amounts not paid in a timely manner as required by this section shall bear interest at 7 percent per annum.
(5) If a subcontractor or a lower tier subcontractor lacks legal standing to assert a claim against a public entity because privity of contract does not exist, the contractor may present to the public entity a claim on behalf of a subcontractor or lower tier subcontractor. A subcontractor may request in writing, either on his or her own behalf or on behalf of a lower tier subcontractor, that the contractor present a claim for work which was performed by the subcontractor or by a lower tier subcontractor on behalf of the subcontractor.

The subcontractor requesting that the claim be presented to the public entity shall furnish reasonable documentation to support the claim. Within 45 days of receipt of this written request, the contractor shall notify the subcontractor in writing as to whether the contractor presented the claim to the public entity and, if the original contractor did not present the claim, provide the subcontractor with a statement of the reasons for not having done so.

A waiver of the rights granted by this section is void and contrary to public policy, provided, however, that (1) upon receipt of a claim, the parties may mutually agree to waive, in writing, mediation and proceed directly to the commencement of a civil action or binding arbitration, as applicable; and (2) a public entity may prescribe reasonable change order, claim, and dispute resolution procedures and requirements in addition to the provisions of this section, so long as the contractual provisions do not conflict with or otherwise impair the timeframes and procedures set forth in this section.

Nothing in this section shall impose liability upon a public entity that makes loans or grants available through a competitive application process, for the failure of an awardee to meet its contractual obligations.

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PAYMENT BOND
KNOW ALL MEN BY THESE PRESENTS, that
WHEREAS, the City of San Carlos (hereinafter referred to as “Owner”) and (hereinafter referred to as “Principal”) have
entered into a contract for the construction of 2023 Sewer Rehabilitation Project, Project No.

C9617 and
WHEREAS, under the terms of said contract Principal is required to furnish a bond securing payment of the claims to which reference is made in Section 3248 of the Civil Code; NOW, THEREFORE, we, the Principal, and
, as Surety, are held and firmly bound unto the
“Owner” in the penal sum of
/l00 Dollars ($ )
lawful money of the United States, being not less than one hundred percent (100%) of the amount payable by the terms of the contract, for the payment of which sum well and truly to be made we bind ourselves, our heirs, executors, administrators and successors, jointly and severally, firmly by these presents.

The condition of this obligation is such that if said Principal or any of its subcontractors fails to pay any of the persons named in Section 3181 of the Civil Code, or amounts due under the Unemployment Insurance Code with respect to work or labor performed under the contract, or for any amounts required to be deducted, withheld, and paid over to the Franchise Tax Board from the wages of employees of the Principal or its subcontractors pursuant to Section 18806 of the Revenue and Taxation Code, with respect to such work and labor that the Surety will pay for the same, in an amount not exceeding the amount hereinabove set forth and also will pay, in case suit is brought upon this bond, a reasonable attorney’s fee, to be fixed by the court. We hereby state and confirm that we are a “California admitted insurer” as defined by the California Department of Insurance.

This bond shall inure to the benefit of any of the persons named in Section 3181 of the Civil Code so as to give a right of action to such persons or their assigns in any suit brought upon this bond.

This bond is given to comply with Sections 3247 and 3248 of the Civil Code. The liability of the Principal and Surety hereunder is governed by the provisions of said Code, all acts amendatory thereof, and all other statutes referred to therein, including Section 3225 of the Civil Code.

The Surety hereby stipulates and agrees that no change, extension of time, alteration or addition to the terms of the contract or to the work to be performed there under or the specifications accompanying the same shall in any ways affect its obligation on this bond, and it does hereby waive notice of any such change, extension of time, alteration or addition to the terms of the contract or to the work or to the specifications.

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IN WITNESS WHEREOF, the above bounded parties have executed this instrument under their seals this _________ day of __________________, 20 , the name and corporate seal of each corporate body being hereto affixed and these presents duly signed by its undersigned representative, pursuant to authority of its governing body. (Principal)
NOTE: By
ByTo be signed by
Principal and Surety
and acknowledgment
and notarial seal
(Surety)
By
By
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PERFORMANCE BOND
KNOW ALL MEN BY THESE PRESENTS, that
WHEREAS, the City of San Carlos (hereinafter referred to as “Owner”) has entered into a contract with ____________________ (hereinafter referred to as “Principal”) for the construction of 2023 Sewer Rehabilitation Project, Project No. C9617, and WHEREAS, said Principal is required under the terms of said contract to furnish a bond of faithful performance of said Contract;
NOW, THEREFORE, we, the Principal, and
, as Surety, are held and firmly bound unto the
“Owner” in the penal sum of
/l00 Dollars ($ )
lawful money of the United States, being a sum equal to the total amount payable under the contract, for the payment of which sum, well and truly to be made, we bind ourselves, our heirs, executors, administrators and successors, jointly and severally, firmly by these presents.

THE CONDITION OF THIS OBLIGATION IS SUCH that if the above bounded Principal shall in all things stand to and abide by and well and truly keep and perform the covenants, conditions and agreements in the said contract and any alteration thereof made as therein provided, on his part to be kept and performed at the time and in the manner therein specified, and in all respects according to their true intent and meaning, as therein stipulated, then this obligation shall become null and void; otherwise it shall be and remain in full force and virtue.

As a condition precedent to satisfactory completion of the said contract, the above obligations to the amount of and-00/100 Dollars ($ )
being not less than ten percent (10%) of the total amount payable under the contract, shall hold good for a period of two (2) years after the completion and acceptance of said work, during which time if the above Principal shall fail to make full, complete and satisfactory repair and replacement or totally protect the “Owner” from loss or damage made evident during said period of two (2) years from the date of acceptance of said work, and resulting from or caused by defective materials or faulty workmanship in the prosecution of the work done, the above obligations in the said sum of and-00/100 Dollars ($ ) shall remain in full
force and virtue; otherwise the above obligation shall be void.

And the said Surety, for value received, hereby stipulates and agrees that no change, extension of time, alteration or addition to the terms of the Contract or to the work to be performed there under of the Specifications accompanying the same shall in any ways affect its obligations on this bond, and it does hereby waive notice of any such change, extension of time, alteration or addition to the terms of the contract or to the work or to the Specifications. We hereby state and confirm that we are a “California admitted insurer” as defined by the California Department of Insurance.

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In the event that the “Owner” or its successors or assigns, shall be the prevailing party in an action brought upon this bond, then, in addition to the penal sum hereinabove specified, we agree to pay to the “Owner” for its successors or assigns, a reasonable sum on account of attorney’s fees in such action, which sum shall be fixed by the court.

IN WITNESS WHEREOF, the above bounded parties have executed this instrument under their seals this _________ day of __________________, 20 , the name and corporate seal of each corporate party being hereto affixed and these presents duly signed by its undersigned representative, pursuant to the authority of its governing body. (Principal)
NOTE: By
ByTo be signed by
Principal and Surety
and acknowledgment
and notarial seal
(Surety)
By
By
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WORKERS' COMPENSATION CERTIFICATION
Labor Code Section 1861
The Bidder hereby certifies as follows:
"I am aware of the provisions of Section 3700 of the Labor Code, which requires every employer to be insured against liability for Workers' Compensation or to undertake self-insurance in accordance with the provisions of that code, and I will comply with such provisions and furnish proof of said insurance before commencing the performance of the work of this contract."
Name of Contractor
Signature of Contractor Representative
Dated: __________________________
NOTE: THIS CERTIFICATION MUST BE COMPLETED AND RETURNED BY THE SUCCESSFUL BIDDER PRIOR TO THE START OF CONSTRUCTION.

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CERTIFICATION OF SAFETY REQUIREMENTS FOR

CONTRACTORS AND VENDORS
California Code of Regulations, Title 8, Section 1509
To work as a contractor or vendor with the City of San Carlos, your organization is required to certify that it has an active on-the-job written Injury and Illness Prevention Program. This program is essential to make the job as accident-free as possible and to comply with Federal and State Safety Standards.

The undersigned hereby certifies that his/her organization has an active written Injury and Illness Prevention Program, as required by Cal-OSHA under California Code of Regulations, Title 8, General Industry Safety Orders, Section 3203 and/or Construction Safety Orders, Section 1509, that ensures compliance with, and enforcement of, current minimum Cal-OSHA Safety Standards, and that his/her organization has knowledge of these standards that are applicable to the job operations. This includes a program for ensuring employees have been trained to recognize hazards of their job.

The undersigned also hereby certifies that his/her organization has an active written Hazard Communication Program with evidence that all employees have been trained in safe use and handling of chemicals on the job site, and a file will be made available for review by the City of San Carlos of each Material Safety Data Sheet (MSDS) on those chemicals kept on the site.

Name of Contractor
Signature of Contractor Representative
Dated: __________________________
NOTE: THIS CERTIFICATION MUST BE COMPLETED AND RETURNED BY THE SUCCESSFUL BIDDER PRIOR TO THE START OF CONSTRUCTION.

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DRUG-FREE WORKPLACE CERTIFICATION
The bidder_________________________________________________________________, hereby certifies compliance with Government Code Section 8355 in matters relating to providing a drug-free workplace. The contractor will:

1. Publish a statement notifying employees that unlawful manufacture, distribution, dispensation, possession, or use of a controlled substance is prohibited and specifying actions to be taken against employees for violations, as required by Government Code Section 8355(a).

2. Establish a Drug-Free Awareness Program as required by Government Code Section 8355(b), to inform employees about all of the following:
(a)
(b)
(c)
(d)
The dangers of drug abuse in the workplace,
The person’s or organization’s policy of maintaining a drug-free workplace, Any available counseling, rehabilitation and employee assistance programs, and Penalties that may be imposed upon employees for drug abuse violations.

3. Provide as required by Government Code Section 8355(c), that every employee who works on the proposed contract or loan:
(a)
(b)
Will receive a copy of the company’s drug-free policy statement, and Will agree to abide by the terms of the company’s statement as a condition of employment on the contract or loan.

I, the official named below, hereby swear that I am duly authorized legally to bind the contractor to the above described certification. I am fully aware that this certification, executed on the date below, is made under penalty of perjury under the laws of the State of California.

Dated:_______________________, 20____.
________________________________
Contractor’s Signature
NOTE: THIS CERTIFICATION MUST BE COMPLETED AND RETURNED BY THE SUCCESSFUL BIDDER PRIOR TO THE START OF CONSTRUCTION.

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ESCROW AGREEMENT FOR SECURITY DEPOSITS IN LIEU OF RETENTION (Optional) Public Contract Code Section 22300
This Escrow Agreement is made and entered into by and between _______________________________ whose address is __________________________________________________ hereinafter called "Owner,"________________________________ whose address is ______________________________
____________________hereinafter called "Contractor" and ____________________________________ whose address is __________________________________________ hereinafter called "Escrow Agent." For the consideration hereinafter set forth, the Owner, Contractor, and Escrow Agent agree as follows:
(1) Pursuant to Section 22300 of the Public Contract Code of the State of California, Contractor has the option to deposit securities with Escrow Agent as a substitute for retention earnings required to be withheld by Owner pursuant to the Construction Contract entered into between the Owner and Contractor for __________________ in the amount of _______________ dated __________ (hereinafter referred to as the "Contract"). Alternatively, on written request of the Contractor, the Owner shall make payments of the retention earnings directly to the Escrow Agent. When the Contractor deposits the securities as a substitute for Contract earnings, the Escrow Agent shall notify the Owner within 10 days of the deposit. The market value of the securities at the time of the substitution shall be at least equal to the cash amount then required to be withheld as retention under the terms of the Contract between the Owner and Contractor. Securities shall be held in the name of ____________________, and shall designate the Contractor as the beneficial owner. (2) The Owner shall make progress payments to the Contractor for those funds which otherwise would be withheld
from progress payments pursuant to the Contract provisions, provided that the Escrow Agent holds securities in the form and amount specified above.
(3) When the Owner makes payment of retentions earned directly to the Escrow Agent, the Escrow Agent shall hold them for the benefit of the Contractor until the time that the escrow created under this contract is terminated.

The Contractor may direct the investment of the payments into securities. All terms and conditions of this agreement and the rights and responsibilities of the parties shall be equally applicable and binding when the Owner pays the Escrow Agent directly.
(4) Contractor shall be responsible for paying all fees for the expenses incurred by Escrow Agent in administering the Escrow Account and all expenses of the Owner. These expenses and payment terms shall be determined by the Owner, Contractor, and Escrow Agent.
(5) The interest earned on the securities or the money market accounts held in escrow and all interest earned on that interest shall be for the sole account of Contractor and shall be subject to withdrawal by Contractor at any time and from time to time without notice to the Owner. (6) Contractor shall have the right to withdraw all or any part of the principal in the Escrow Account only by written notice to Escrow Agent accompanied by written authorization from the Owner to the Escrow Agent that Owner consents to the withdrawal of the amount sought to be withdrawn by Contractor. (7) The Owner shall have a right to draw upon the securities in the event of default by the Contractor. Upon seven (7) days written notice to the Escrow Agent from the owner of the default, the Escrow Agent shall immediately convert the securities to cash and shall distribute the cash as instructed by the Owner.

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(8) Upon receipt of written notification from the Owner certifying that the Contract is final and complete, and that the Contractor has complied with all requirements and procedures applicable to the Contract, Escrow Agent shall release to Contractor all securities and interest on deposit less escrow fees and charges of the Escrow Account.

The escrow shall be closed immediately upon disbursement of all moneys and securities on deposit and payments of fees and charges.
(9) Escrow Agent shall rely on the written notifications from the Owner and the Contractor pursuant to Sections (5) to (8), inclusive, of this agreement and the Owner and Contractor shall hold Escrow Agent harmless from Escrow Agent's release and disbursement of the securities and interest as set forth above. (10) The names of the persons who are authorized to give written notice or to receive written notice on behalf of the Owner and on behalf of Contractor in connection with the foregoing, and exemplars of their respective signatures are as follows:

On behalf of Owner: On behalf of Contractor: On behalf of Escrow Agent:
___________________________
Title
___________________________
Title
_______________________________
Title
___________________________
Name
___________________________
Name
_______________________________
Name
___________________________
Signature
___________________________
Signature
_______________________________
Signature
___________________________
Address
___________________________
Address
_______________________________
Address
At the time the Escrow Account is opened, the Owner and Contractor shall deliver to the Escrow Agent a fully executed counterpart of this Agreement.

IN WITNESS WHEREOF, the parties have executed this Agreement by their proper officers on the date first set forth above.

Owner: Contractor:
______________________________
Title
___________________________________
Title
______________________________
Name
___________________________________
Name
______________________________
Signature
___________________________________
Signature
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GUARANTEE
(To Be Submitted Prior to Project Acceptance)

FOR THE
City of San Carlos
San Carlos, CA 94070
2023 Sewer Rehabilitation Project
Project No. C9617
We hereby guarantee that the work we have installed for the above named project has been done in accordance with the Plans and Specifications and that the work installed will fulfill the requirements of the guarantee.

We agree to repair or replace any or all of our work, together with any other adjacent work which may be displayed in so doing that may prove to be defective in its workmanship or material within a period of two (2) years from the date of acceptance of the above-named work by the City of San Carlos, without any expense whatsoever to the City of San Carlos, ordinary wear and tear and unusual abuse or neglect excepted.

Within fifteen (15) days after being notified in writing by the City of San Carlos of any defects in the work, we agree to commence and prosecute with due diligence all work necessary to fulfill the terms of this guarantee, and to complete the work within a reasonable period of time, and in the event of our failure to so comply, we collectively and separately, do hereby authorize said City of San Carlos to proceed to have such work done at our expense and we will honor and pay the cost and changes therefore upon demand.

Dated:

By:

NOTE: THIS CERTIFICATION MUST BE COMPLETED AND RETURNED BY THE SUCCESSFUL BIDDER PRIOR TO PROJECT ACCEPTANCE.

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2023 Sewer Rehabilitation Project
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DESIGN CERTIFICATION
The Plans and Technical Specifications contained herein have been prepared by, or under the responsible charge of, the following registered person(s):

Prepared by:
04/11/23
___________________________________________________________ Renee CRAWFORD, P.E.

Project Manager/Engineer
Mott MacDonald
Date
2077 Gateway Pl, Suite 550
San Jose, CA 95110
(408) 876-6078
Approved for Construction:
___________________________________________________________ GRACE LE, P.E., CITY ENGINEER
Public Works Department
City of San Carlos
Date
600 Elm Street, San Carlos, CA 94070
(650) 802-4201

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SPECIAL PROVISIONS

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SPECIAL PROVISIONS
These Special Provisions contain project specific requirements pertaining to the work, and as such, shall take precedence over the General Conditions portions of these Specifications. All costs associated with satisfying the requirements in these Special Provisions shall be included in the Contractor’s bid price and no additional compensation shall be made.

1. DESCRIPTION OF WORK
In general, the Contractor shall furnish all labor, materials, equipment and services necessary to complete the project as further described in the “Instructions to Bidders” of these Specifications.

2. LOCATION
Work to be done under this contract is at:

Dartmouth Avenue, Molton Avenue, Coronado Ave, Greenbrier Road, Whitman Court, Portofino Drive, Sunset Drive, Brittan Avenue, Cedar Street, Arroyo Avenue, Brittan Avenue, Greenwood Avenue, Howard Avenue, Rosewood Avenue, Elm Street, Woodland Avenue, Alameda De La Pulgas, Edgehill Drive, Garnet Avenue, Emerald Avenue, Eaton Avenue, St Francis Way, Kelton Avenue, Ortega Alley as shown on the project plans.

3. SEQUENCING AND ORDER OF WORK
The following sequencing constraints are required on the project, shall be incorporated into the Contractor’s master schedule, and shall be reflected in the order of work.

Contractor shall provide pre-construction CCTV of Coronado Avenue (Sheet C-4) segment as a first order item of work. CCTV video shall be provided to the City for review within 15 days of Notice to Proceed and a minimum of 30 days prior to this work being scheduled to occur. City will review and provide disposition regarding review of CCTV within 15 days of receipt of CCTV video. Materials for this segment shall not be ordered or purchased until City has provided review of CCTV and written confirmation of construction method.

All underground utility construction and concrete flatwork shall be completed prior to final paving.

Contractor shall fully complete all work, including final paving and street sweeping, before moving onto another project site.

4. PROJECT INFORMATION SIGN
The Contractor shall provide signs for the residential work areas. Residential work area project signs may be mounted on Type II barricade on residential neighborhoods. The signs shall be as shown in Appendix C.

The Contractor shall provide a total of 4 signs (one on each end of the work limits and two between the work limits) for this project.

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5. 6.

PORTABLE CHANGEABLE MESSAGE SIGN (PCMS)
Portable Changeable Messages Signs (PCMS) shall be placed a minimum four (4) weeks prior to the start of construction at a minimum of 100 feet from the project limits along Brittan Avenue, Cedar Street and Arroyo Street at Central Middle School, Howard Avenue, Alameda de las Pulgas, and Ortega Alley. PCMS signs shall display “EXPECT DELAYS <<DATE>> TO <<DATE>> BETWEEN 8AM AND 5PM”.

DAYS & HOURS OF OPERATION
The Contractor shall restrict construction activities to the following hours:

Schedule of Working Hours within Public Right of Way
Construction Location Working Days Working Hours
Residential/Local and Monday through Friday 8:00 a.m. to 4:00 p.m.

Collector
Downtown San Carlos Monday through Friday 8:00 a.m. to 11:30 a.m. and 1:30 p.m. to 4:00 p.m.
9:00 a.m. to 3:00 p.m.Arterial Monday through Friday
No work shall be performed on Saturdays, Sundays, or designated legal holidays unless otherwise designated below.

Exceptions may be made, at the Engineer’s discretion, to allow work at other times and on other days if required for the Contractor’s operations. In such cases, the Contractor shall have an alternate work schedule reviewed and authorized by the Engineer prior to commencement of work.

Activities outside of those hours shall not generate objectionable noise, dust, or inconvenience to the public. Regular working days are from Monday through Friday except City legal holidays unless exception is granted by the City Engineer.

Streets adjacent to work areas that provide access to schools shall not be started before 9:00 a.m. and be completed at 3:00 p.m.

7. NOISE CONTROL
Noise levels shall conform to the noise ordinance requirements of the governing jurisdiction. The Contractor shall make every reasonable effort to control noise generated by construction to the satisfaction of the Engineer.

The Contractor shall submit documentation showing that the construction equipment is equipped with the manufacturer’s standard noise control equipment, or with an equally effective replacement that meets the manufacturer’s specifications.

Construction equipment and vehicles that require back-up alarms will be equipped with ambient-sensitive backup alarms. The use of jake brakes is prohibited and gasoline- Special Provisions
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powered construction equipment must be equipped with an operating muffler of baffle system.

8. PROTECTION OF TREES
The Contractor shall protect all existing trees at their drip lines, as shown on the Contract Documents. Temporary chain-link fencing or plastic construction fence are acceptable as protective barriers for tree protection purposes. Fencing shall be a minimum of five (5) feet high. Tree protection shall remain in place until all construction is complete. The City reserves the right to issue a stop-work notice if the tree protection devices are not installed or if the devices are not maintained.

No excavations within the tree protection area are allowed unless approved by the City and under the supervision of a licensed arborist. Any filling within the tree protection area shall be done in accordance with a detailed improvement plan approved by the City. No trimming, cutting, or pruning of designated trees or roots can occur without approval by the City and supervision of a licensed arborist.

No storage of materials, disposal of paints, solvents or other noxious materials, operation of equipment, parked cars, unnecessary trenching, grading or compaction shall be allowed within the drip line of any trees.

9. TIME OF COMPLETION AND LIQUIDATED DAMAGES
The Time of Completion and Liquidated Damages shall be as described in the Instructions to Bidders.

10. LICENSES
Contractor and all subcontractors under them shall obtain a business license from the City of San Carlos and shall hold current licenses for the craft that the business is contracting for as required by Federal, State and Local laws.

11. CALTRANS ENCROACHMENT PERMIT - NOT USED

12. STAGING / CONSTRUCTION AREA AND EXCAVATION OFF-HAUL The City has not designated a staging area for this project. Should a staging area be desired, the Contractor shall be responsible for securing such an area along with any and all permits and permissions that may be necessary from the City and/or private property owners. Proof of concurrence shall be provided to the City upon request. Any fencing or other protective means (if required or employed by the Contractor) shall be at the contractor’s expense. The Contractor’s attention is directed to Article 9.09 of the General Provisions for additional staging requirements.

All excavated soil shall be off-hauled immediately; no trench excavation material shall be stored on-site or used as trench backfill. Contractor shall refer to Technical Specifications Section 02200, Item 3.07 for other excavation and off-haul requirements.

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No materials such as, fused pipe, will be permitted to be left overnight in the public right- of-way. No City owned parcels or properties are available for use of the Contractor for a laydown/staging area. The Contractor shall secure, at the Contractor's own expense, any areas necessary for plant sites, storage of equipment or materials, or for other purposes.

The right of way shall be used only for purposes that are necessary to perform the required work. The Contractor shall not occupy the right of way, or allow others to occupy the right of way, for purposes which are not necessary to perform the required work.

13. CITY FURNISHED MATERIALS
There are no materials to be provided by the City for installation by the Contractor.

14. “NO PARKING” SIGNS
The City will provide “NO PARKING” signs and the Contractor shall arrange for the pick- up of these signs a minimum seven (7) days prior to posting.

15. WATER
Water for use during construction shall be furnished by the Contractor and all costs incurred including the water use, meter charges, meter/backflow preventer deposit, vehicles and containers needed in transporting water to the job site shall be paid by the Contractor.

16. POWER
All power for and in connection with work to be done under this contract shall be furnished and maintained by Contractor.

17. OWNER / CONTRACTOR MEETINGS
A. PRE-CONSTRUCTION CONFERENCE: A Pre-construction Conference will be via Zoom within ten (10) working days after the date the Notice to Proceed is issued at the time and date described in the Notice to Proceed.

The conference will address the scope of work and the Contractor's proposed construction schedule, traffic control and detour plan. At the Pre-construction conference, the Contractor shall provide the following:





The proposed construction schedule (for overall project), Three-week look-ahead construction schedule,
Draft of the notification letter to residents and merchants, The proposed traffic control plan,
Project submittals.

The meeting shall be attended by:




Contractor's representative, superintendent and major subcontractors, City's representative project manager and inspector,
Design consultant team,
Others as Appropriate.

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18. NOTIFICATION OF RESIDENTS AND MERCHANTS:

The Contractor shall perform the following tasks prior to commencement of the construction work:

Prepare and leave at each location a notification letter fourteen (14) days prior to the time of construction, stating nature of work and expected duration of construction activity affecting their property. Additional notices shall be provided seventy-two (72) hours prior to commencement of construction.

Include Contractor's telephone number for the purpose of taking inquiries and complaints.

Submit draft copy to City at Pre-construction conference.

Final format and wording of this letter shall be subject to approval of Engineer.

Refer to the Technical Specifications Section 01730 - Public and Agency Notifications for additional requirements

19. STORM WATER POLLUTION PREVENTION
Consistent with the requirements of the federal Clean Water Act, the Project is subject to storm water pollution prevention requirements, which include the implementation of a Storm Water Pollution Prevention Plan (SWPPP) and/or implementation of local storm water requirements, which prohibit the discharge of pollutants from the Project site.

All work shall conform to the National Pollutant Discharge Elimination System (NPDES) General Permit for Storm Water Discharges Associated with Construction and Land Disturbance Activities (Order No. 2009-0009-DWQ, NPDES No. CAS000002) ("General Permit"), and the NPDES Municipal Regional Stormwater Permit (MRP) (Order No. R2- 2015-0049, NPDES No. CAS612008). The Contractor shall implement all applicable San Mateo Countywide Water Pollution Prevention Program (SMCWPPP) measures and Best Management Practices (BMPs). Failure to comply with the approved construction BMPs will result in the issuance of correction notices, citations and/or a stop work order.

Prior to the start of any field work, the Contractor shall prepare a Water Pollution Control Plan (WPCP), in accordance with the latest version of the California Department of Transportation "Water Pollution Control Program (WPCP) Preparation Manual" and template, or other approved template, for review and approval by the Engineer. The WPCP shall include, at a minimum, the selection of BMPs applicable to the project, and an erosion control plan detailing the locations on the project site where applicable BMPs will be implemented.

The Contractor shall include in the WPCP any applicable California Department of Transportation Construction Site BMP Fact Sheets, or an approved equivalent. The Contractor is responsible for furnishing, installing, constructing, inspecting, maintaining, removing, and disposing of the BMPs as necessary throughout the entirety of the project.

The Contractor shall inspect BMPs regularly, and correct improperly installed, damaged, or ineffective BMPs immediately. Site BMP inspections shall be performed in accordance Special Provisions
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with the approved SWPPP/WPCP, and at a minimum of two-week intervals. Reports of each BMP inspection shall be provided to the City on a monthly basis.

The Contractor is responsible for furnishing, installing, constructing, inspecting, maintaining, removing, and disposing of the BMPs as necessary throughout the entirety of the project. The Contractor shall inspect BMPs regularly, and correct improperly installed, damaged, or ineffective BMPs immediately.

The Contractor shall provide the City with a copy of the Regional Water Quality Control Board approved SWPPP prior to the start of any field work.

20. CONSTRUCTION AND DEMOLITION DEBRIS
The City has an ordinance requiring that debris from construction and demolition activities be reused, recycled and/or salvaged so that it doesn’t end up in a landfill. The Contractor shall provide sufficient evidence (weight tickets or other documents) to verify that some of debris is being recycled, reused and/or salvaged to the satisfaction of the Engineer.

21. HAUL ROUTES
The section of Holly Street between Old County Road and Industrial Road is politically sensitive as a residential area and is NOT TO BE USED as a Haul Route. Contractor shall therefore direct trucks to not use the Holly and Highway-101 Interchange when heading to the construction sites. Trucks leaving the sites shall turn onto El Camino Real and head either north to Ralston Avenue or south to Brittan Avenue.

22. SANITATION FACILITIES AND UTILITIES
Contractor shall be responsible for providing portable bathrooms, wash stations, water, and power, if needed. Portable bathrooms and wash stations shall be not be staged in the public right-of-way. Portable bathrooms and wash stations will be on trailers and removed from the work site by the end of each working day. The Contractor shall coordinate with CalWater to obtain a hydrant meter for dust control.

23. SAFETY OF PERSONS AND PROPERTY
The Contractor shall take all reasonable precautions for the safety of, and shall provide all reasonable protection to prevent damages, injury, or loss to:

1. All employees, City personnel, residents on the project, and all others who may be affected thereby; and

2. All the work and all materials and equipment to be incorporated therein, whether in storage on or off the site, under the care, custody, or control of the Contractor or any of the Contractor’s subcontractors; and

3. The work of the City or other contractors.

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The Contractor shall give all notices and comply with all applicable laws, ordinances, rules, regulations, and lawful orders of any public authority bearing on the safety of persons or property or their protection from damage, injury, or loss.

The Contractor shall erect and maintain, as required by existing conditions and the progress of the work, all reasonable safeguards for safety and protection, including posting danger signs and other warnings against hazards, promulgating safety regulations, and notifying owners and users of adjacent utilities.

The Contractor shall designate a Site Safety and Health Officer who is a responsible member of the Contractor’s organization and whose duty shall be the prevention of accidents. The Contractor shall submit the name of the Site Safety and Health Officer to the Engineer in writing. The Site Safety and Health Officer shall be responsible for preparation of a Health and Safety Plan.

The Health and Safety Plan shall detail the Contractors safety committee(s), safety rules, safety training, enforcement procedures, incentives, accident procedures and investigations, inspections, safety equipment and maintenance, hazardous materials (i.e. asbestos pipe) handling procedures, emergency action plan(s), alcohol and drug policies, confined space entry procedures, certification program and emergency retrieval procedures, 911 and emergency rescue services within jurisdiction of the work area, health providers and hospital emergency near the work site.

24. TRAFFIC CONTROL
Construction shall be organized so as to cause the least possible inconvenience to traffic.

Traffic control shall comply with the latest Caltrans Standard Plans and traffic control devices shall be furnished, placed, and maintained in accordance with the latest version of Part 6, Temporary Traffic Control, of the California Manual on Uniform Traffic Control devices (CA-MUTCD).

The Contractor shall provide all required signs, barricades, lights, high-level flag trees, arrow boards, and other devices.

No work shall be performed on Saturdays, Sundays, or designated legal holidays.

General Requirements:

1. The Contractor’s attention is directed to Article 9.20 of the General Provisions and Section 02800 “Traffic Control” of the Technical Specifications for additional requirements.

2. The Contractor shall submit a traffic control plan to the Engineer for review, including any requests for alternate work schedules or work hours:

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3. No work may begin under contract until the Traffic Control Plan has been approved by the Engineer. Time required for review and approval of the Traffic Control Plan shall not constitute a basis for time extension.

4. The Contractor shall maintain temporary AC surface to provide safe and comfortable passage for pedestrian and vehicular traffic.

5. At the end of each day, all trench or access pit excavations shall be either backfilled in accordance with Section 02200 “Earthwork”, of these Technical Specifications, or covered with traffic rated non-skid steel plates. The steel plates shall be countersunk flush with the adjacent grade to provide a smooth surface if the plates are located within the traveled way of the road. Cutbacks shall be applied in gaps and/or at edges.

Adjoining plates shall be tack-welded where the plates meet. Plates located outside of the traveled way shall be held in place by placing temporary asphalt around all edges.

6. The Contractor shall provide electric arrow board(s) for any lane closures and reductions, except for on residential streets.

Special Requirements:

1. The Contractor shall be responsible for providing and maintaining all temporary traffic control and safety devices, including all personnel necessary for effectively directing vehicular, pedestrian and bicycle traffic through the construction zone. The Contractor assumes sole and complete responsibility for the job and site conditions, including safety of all persons and property, from start until final acceptance of the project. This requirement shall apply continuously twenty-four (24) hours per day and shall not be limited to normal working hours.

2. Streets shall not be closed unless authorized by the Engineer in writing at least seventy-two (72) hours prior to the requested date. If street closure is approved, Contractor shall notify the following forty-eight (48) hours prior to the street closure:
a. City’s project manager and inspector
b. City of San Carlos Police Department, (650) 802-4277 c. City of San Carlos Fire Department, (650) 780-7400
d. City of San Carlos Garbage, Recycling, and Tree Trimming Haulers:

Recology San Mateo County (650) 595-3900
e. SamTrans Operations Control Center, (650) 508 6200
f. Affected schools, including but not limited to:
i. Central Middle School
g. Impacted residents and businesses

3. If emergency or urgent street closures are required, the Contractor shall notify:
a. City’s project manager and inspector
b. City of San Carlos Police Department, (650) 802-4277 c. City of San Carlos Fire Department, (650) 780-7400
Refer to Article 25 below for requirements when construction will disrupt or affect a SamTrans bus stop.

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Access for local residents and businesses and all private property shall be maintained at all times. Signs shall be placed in front of commercial and industrial driveways to allow continual access. At the end of each working day these streets shall be reopened to through traffic with proper barricades, warning devices and temporary striping. If these streets are closed, the Contractor shall proceed expeditiously and with consideration for public convenience from the start of work to its completion.

25. SAMTRANS COORDINATION
Prior to commencement of the preconstruction potholes or any work, the Contractor shall contact the SamTrans Operations Control Center at (650) 508-6200, in coordination with the Engineer, to confirm and comply with all permitting, notification, bus routing, traffic control and concrete pavement restoration requirements.

26. EXISTING UTILITIES
The Contractor shall notify (Underground Service Alert (U.S.A) at 811 for field location of all utilities 48 hours prior to any excavation.

The Contractor shall be responsible for verifying the presence of utilities within the limits of work, as well as any changes in the limits that are made to accommodate the project, protecting all utilities including but not limited to traffic signal conductors, signal interconnect communication, and fiber optic cables that may be affected by construction activities (e.g., clearing and grubbing, excavation, trenching, etc.), and notifying the Engineer in writing of any conflicts prior to beginning any excavation.

The Contractor shall pothole to verify the location and/or elevation of existing utilities as marked by Underground Service Alert (U.S.A.) within the limits of work. The Contractor shall work with utility companies and inspectors to protect existing utility lines. The Contractor shall notify the Engineer three (3) working days in advance of the potholing operation. Once the utilities are exposed, the excavation shall not be backfilled until the Engineer has inspected and taken measurements of the utilities.

Unless otherwise indicated on the plans, a pothole shall have a maximum length of six (6) feet, maximum depth as indicated on the plans or as directed by the Engineer, and the width dimension shall be as required by the Contractor with authorization of the Engineer.

Location and protection of utilities not designated for preconstruction potholing is the responsibility of the Contractor and no separate payment for such work will be made under the Contract.

The Contractor will protect and assume liability for all existing or newly installed structures and lines from damage by his forces during the construction period from the date of Notice to Proceed and the date of Final Acceptance.

All repairs of apparent or discovered utility facilities will be accomplished by the respective utility owners. The Contractor must coordinate with the utility companies to rewrap and/or repair their utility. All exposed existing telephone, gas, water, electrical and other public utility facilities will receive a minimum encasement of 12-inches of sand or encasement as directed by the utility owner.

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All painted markings including USA and CBUD markings, marks placed by the Contractor, and marks placed by the City’s survey crew on street pavement, curbs, gutters and sidewalks shall be completely removed by the Contractor prior to completion of the project.

All cost incurred to complete this work shall be deemed included in other items of work and no additional payment will be made thereof.

27. CONSTRUCTION SCHEDULE
The Contractor shall submit to the Engineer, for review, a construction schedule in Critical Path Method (CPM) format with accompanying bar chart setting forth the sequence in which construction will proceed. In addition, the Contractor shall submit an updated CPM schedule for review along with the monthly request for partial payment. The City may, at its sole discretion, withhold partial payment until an updated CPM schedule is submitted.

The construction schedule must be created immediately upon award.

28. STREET SWEEPING
Street sweeping using a mechanical sweeper with vacuum capabilities shall occur, at a minimum, every Wednesday and Friday at the end of the working day. The Contractor shall clean and sweep roadways and on-site paved areas of all materials attributed to or involved in the work. In addition, the Contractor shall clean and sweep roadways as necessary to ensure that vehicle and pedestrian travel is not endangered by the presence of loose materials. Construction site entrances shall be kept free of these materials.

29. DAILY WORK REPORTS
The Contractor shall provide the City Inspector with daily work reports at the beginning of each working day for a report of the previous working day. The form shall conform to that which is provided in Appendix A. Failure to provide reports shall constitute grounds for a work shut down without an extension to the Contract Time of Completion.

30. GEOTECHNICAL REPORT
The following documents are available as reference material for bidder’s and Contractor’s review through box.com at:
https://cityofsancarlos2.box.com/s/lk32n8ju4trp881yuq51jbnzzddgqd77

1. Geotechnical report titled Geotechnical Evaluation, City of San Carlos 2022 Sewer Rehabilitation, prepared by Ninyo & Moore, dated July 19, 2022.

2. Geotechnical report titled Geotechnical Evaluation, City of San Carlos 2020 Sewer Rehabilitation, prepared by Ninyo & Moore, dated July 24, 2020.

3. Geotechnical report intitled Geotechnical Evaluation, City of San Carlos 2019 Sewer Rehabilitation, prepared by Ninyo & Moore, dated May 31, 2019

4. Geotechnical report intitled Geotechnical Evaluation, City of San Carlos 2017 Sewer Rehabilitation, prepared by Ninyo & Moore, dated June 2, 2017 Special Provisions
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5. Geotechnical report intitled Geotechnical Evaluation, City of San Carlos 2016 Sewer Rehabilitation, prepared by Ninyo & Moore, dated July 8, 2016.

Hard Rock Excavation
The Geotechnical Evaluation, City of San Carlos 2022 Sewer Rehabilitation; Geotechnical Evaluation, City of San Carlos 2020 Sewer Rehabilitation; and Geotechnical Evaluation, City of San Carlos 2017 Sewer Rehabilitation reports have identified geological conditions that presented refusal to auger using a B-24 drilling rig and solid-stem augers. Contractor shall inform the Engineer, prior to mobilizing hard rock excavation equipment, when hard rock excavation may be required at the applicable sites, including photographic evidence of the excavation conditions. Contractor’s equipment for excavating hard rock must be capable of excavating intact, slightly fractured, and/or slightly weathered chert, basalt/greenstone, and sandstone. Contractor shall review local street conditions and geometry, permitted work areas and hours, staging, traffic control, and noise mitigation requirements when selecting and mobilizing the equipment to excavate hard rock conditions. In considering mobilization of larger equipment, the Contractor shall consider limited room for overnight storage of equipment.

Contractor shall take additional preconstruction photographs as necessary to document condition of existing improvements to remain. Contractor shall document with photographic and production rate evidence the excavation conditions. Evidence shall be furnished to Owner and Engineer on a daily basis. Contractor shall refer to Bid Item Descriptions for measurement and payment of hard rock excavation and mobilization of hard rock excavation equipment. Contractor shall also refer to Technical Specifications Section 02200 for additional definition of soft and hard rock.

31. CONSTRUCTION SUBMITTALS
The Contractor shall provide all construction submittals within 30 calendar days of the issuance of the Award of Contract Notification Letter and prior to beginning work.

Submittals shall be provided as required by the contract documents. The Contractor shall provide, at a minimum, the following submittals. The Contractor shall be responsible for conforming to the requirements of the specifications.

A. PLAN AND PROCEDURE SUBMITTAL LIST

ITEM DESCRIPTION SPECIFICATION SECTION

1. 2.

3. 4.

5. 6.

7. 8.

9. Project Schedules with Construction Schedule
Public and Agency Notification Plan
Staging Area
02050
01720, 01730
SP-Article 12
02800
01560
02350
02350
02200
02145
Traffic Control Plan
Water Pollution Control Plan
Trench Sheeting, Shoring, and Bracing Plan
CAL/OSHA Excavation Permit
Trench Dewatering
Health and Safety Plan

10. Odor/Noise Mitigation Plan

11. Sewage Diversion and/or Pumping and Contingency Plan 02145
02145, 15050
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12. Demolition Plan* 02050

13. Active Sewer Facilities Removal and Reconnection to Existing Sewer System Plan and Construction Schedule

14. Sewer System Testing Plan and Schedule

15. Calibration Certificates for Test Gauges

16. CIPP Experience

17. CIPP Field Measurements

18. CIPP Construction Details

19. CIPP Calculations
02050
02735
02735
02641
02641
02641
02641

20. Pipe Bursting Layouts and Schematics, Lay-Down Areas, Storage Areas, Launch and Receiving Pits

21. Pipe Bursting Winch System and Fusion Machine

22. Pipe Bursting Experience and Qualifications

23. Pipe Reaming Layouts, Excavations, Entry and Exit Pits, Utilities, Drilling Fluid Containment Items and Traffic Protection 02642
02642
02642
02643

24. Pipe Reaming Planned Equipment and Equipment Setup Areas 02643

25. Pipe Reaming Work Plan, Daily Log Samples and Other Records 02643

26. Pipe Reaming Calculations

27. Pipe Reaming Disposal of Waste Materials Plan

28. Pipe Reaming Contingency Plan

29. Pipe Reaming Experience and Qualifications

30. Security Plans and Fencing*
02643
02643
02643
02643
15050

31. Mobilization of Hard Rock Excavation Equipment
Traffic Control and Staging Area* 02800,
SP-Article 12
SP-Article 30
* If applicable.

B. MATERIAL SUBMITTAL LIST
The names of the manufacturers/producers of the materials proposed by the Contractor for use under this contract shall be submitted to the Engineer, for review prior to beginning of work. The manufacturer's/ producer’s, materials, test results, specifications and/or certificates of compliance shall be submitted for all applicable products on the list, and shall be dated no earlier than six months from the award date.

The Contractor shall submit the following items to the Engineer, for review, within five (5) working days after the issuance of the Project work scope documents and prior to beginning of work:

ITEM DESCRIPTION SPECIFICATION SECTION
Road/Backfill Material

32. Class 1, Type A Permeable Pipe Bedding Material

33. 3/4” Max Class 2 Aggregate Base Trench Backfill

34. Geotextile
02200
02200,02500
02200

35. Asphalt Concrete Certificates and Delivery Tickets 02500

36. AC Base, Type A, ¾inch Maximum Gradation, Coarse Class

37. Traffic Stripes & Pavement Markings Materials

38. Prime Coat, Tack Coat, and Fog Seal

39. Type II Slurry Seal
02500
02765
02500
02510
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40. Controlled Low Strength Material 03123
0330041. Concrete Mix Designs (Class B, C, or E as applicable)

42. Manufacturer’s Data for Concrete Accessories, Waterstops, Retardants, Curing and Sealing Compounds, Bonding
Compounds, and Admixtures* 03300
15063
Pipe and Fittings

43. PVC Pipe and Fittings Shop Drawings, Laying Diagrams, and Manufacturers’ Certificates

44. High-Density Polyethylene Pipe and Fittings, Pipe Joining Methods and Equipment, Quality Control Records

45. Vitrified Clay Pipe (VCP) in accordance with ASTM C700

46. Pipe-to-Manhole Connectors for Existing Manholes

47. Pipe-to-Manhole Connectors for New Manholes

48. Flexible Couplings
15066
15050
15063, 15066
15063, 15066
15050

49. Metallic Pipeline Marking Tape 15050

50. CIPP Product Data, Certifications, Testing and Warranty

51. Sewer Lateral Piping, Cleanout, Fittings, Connection Details 02641
02739
Hydraulic Structure Items

52. Controlled Density Fill Mix Designs 02200,03123
0320053. Concrete Reinforcement Certified Test Mill Reports

54. Concrete Reinforcement Placing Drawings and Welder
Qualifications* 03200

55. Manhole - Frame and Cover Castings

56. Manhole - Cast-in-Place Base Concrete*

57. Manhole - Manufacturer Precast Manhole Shop Drawings

58. Manhole - Preformed Manhole Joint Sealant

59. Manhole - Concrete Waterproofing Sealant

60. Manhole - Corrosion Protection Coating

61. Manhole - Drop Connection
05541
02701,03300
02701
02701
02701
02701
02701

62. Non-Shrink Grout 03600

63. Epoxy Grout for Rung Removal 03600, 03930
03930
03930

64. Manhole Channel/Base Restoration Products

65. Manhole Inflow/Infiltration Prevention Materials

66. Manhole Rehabilitation Lining/Coating System

67. Technical Data of Structure Surfaces to be Rehabilitated, Surface Preparation and Installation Plan, Rehabilitation Product Manufacturer Installer Certificates, Work Crew’s Qualifying Experience, Work Plan, and Safety Plan
03930
03930
* If applicable.

C. ADDITIONAL SUBMITTALS
The lists of this Section, “Submittals” and “Material Submittal List” are intended to be comprehensive but no claim for their completeness is implied, and submittal of each and every item on the lists shall not relieve the Contractor of supplying all information needed, or of complying with any of the other requirements of the specifications. Revised lists may be issued and items may be added to the list supplied.

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32. RECORD DRAWINGS
Upon completion of the project, the Contractor shall provide an electronic copy of the as- built plans with any red line revisions that were identified in the field.

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TECHNICAL SPECIFICATIONS

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Technical Specifications
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TECHNICAL SPECIFICATIONS

TABLE OF CONTENTS
Page No.

Bid Item
Descriptions.............................................................................................. TS-3 Section 01505 — Mobilization..............................................................................TS-21 Section 01560 — Temporary Controls..................................................................TS-23 Section 01720 — Sewer Outage Notifications......................................................TS-27 Section 01730 — Public and Agency Notifications..............................................TS-29 Section 02050 — Demolition, Abandonment, and Removal ................................TS-32 Section 02145 — Sewage Flow Control ...............................................................TS-36 Section 02200 — Earthwork .................................................................................TS-44 Section 02350 — Excavation Support Shoring and Bracing ................................TS-69 Section 02500 — Asphalt Concrete Paving ..........................................................TS-75 Section 02510 — Slurry Seal Pavement Surfacing .............................................TS- 81 Section 02641 — Sanitary Sewer Rehabilitation Using CIPP Method................ TS-82 Section 02642 — Pipe Bursting ............................................................................TS-96 Section 02643 — Pipe Reaming..........................................................................TS-102 Section 02701 — Precast Concrete Structures....................................................TS-119 Section 02735 — Sanitary Sewer System Testing and Cleaning........................TS-124 Section 02736 — Closed Circuit Television (CCTV) Inspection of Sanitary Sewer System ......................................................TS-129 Section 02739 — Building Sewer (Lateral) Construction and Reinstatement.........................................................................TS-135 Section 02765 — Traffic Stripes and Pavement Markings .................................TS-138 Section 02768 — Temporary Pavement Markings .............................................TS-141 Section 02800 — Traffic Control........................................................................TS-144 Section 02892 — Traffic Loops ..........................................................................TS-149 Section 02990 — Adjust Incidental Structures to Grade ....................................TS-152 Section 03123 — Controlled Low Strength Material .........................................TS-154 Section 03200 — Concrete Reinforcement.........................................................TS-159 Section 03300 — Cast-In-Place Concrete...........................................................TS-163 Section 03600 — Grout.......................................................................................TS-174 Section 03930 — Manhole Rehabilitation ..........................................................TS-178 Section 05541 — Manhole Frames and Covers ..................................................TS-192 Section 15050 — General Piping ........................................................................TS-194 Section 15063 — SDR 26 Polyvinyl Chloride Sewer Pipe (PVC) ....................TS-204 Section 15066 — High Density Polyethylene (HDPE) Pipe...............................TS-210

TECHNICAL SPECIFICATIONS

TABLE OF CONTENTS

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TECHNICAL SPECIFICATIONS

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Technical Specifications
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BID ITEM DESCRIPTIONS
Payment for work in the Contract Documents that is not covered in the Bid Item Descriptions below shall be considered as included in the prices paid for the various items of work and no additional compensation will be allowed therefore
Bid Item 1 – Mobilization

1. This bid item shall be lump sum. The maximum allowable bid price under this item shall be in conformance with Specification Section 01505, Mobilization. Any amount beyond the maximum allowable amount shall not be paid until the final progress payment.

2. Payment shall be made for seventy-five (75%) percent of the maximum allowable bid item amount at the first progress payment following completion of mobilization and appurtenant work items described below. The remaining amount bid for this item shall be due at the final progress payment and upon completion of demobilization.

3. This bid item shall include payment for obtaining all bonds, all Contractor acquired permits, licenses, agreements, certifications, notices of intent in compliance with Section 01720, Sewer Outage Notifications and Section 01730, Public and Agency Notifications, and acquisition of temporary easements; moving onto the site of all equipment, materials and staff including obtaining and setting up of Contractor’s staging area/yard; furnishing and erecting all needed construction facilities, fencing, project signage, project security, demobilization, preconstruction photographs, video recording of surface features, progress schedules and reports, contract meetings, and record drawings.

4. No payment for mobilization, or any part thereof, will be approved for payment under the contract until all applicable mobilization items identified in Paragraph 3 above have been completed.

Bid Item 2 – Preparation and Implementation of Stormwater Pollution Prevention Plan (SWPPP)
The minimum allowable bid price under this item shall be $10,000/LS. Payment for this item shall be lump sum, prorated over the course of the project based upon the percentage complete of all items.

This item includes the preparation and implementation of a SWPPP and includes full compensation for compliance with Specification Section 01560, Temporary Controls, and Caltrans Permit Storm Water requirements where applicable, including furnishing all labor, materials, tools, and equipment, incidentals, and performing all work for design and installation of SWPPP systems and compliance with Best Management Practices.

SECTION 01505

MOBILIZATION

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Technical Specifications
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Bid Item 3 – Sheeting, Shoring and Bracing

1. This bid item shall be lump sum. Payment for this item will be prorated over the course of the project based upon the percentage complete of all items, excluding Bid Items 1 through 4 for the purpose of the calculation.

2. The Contractor shall comply with the requirements described in Specification Section 02200 as well as applicable City, County, State, and Federal regulations regarding sheeting, shoring, and bracing. This bid item includes all excavation support measures required, including but not limited to design, installation, maintenance, and removal of shoring and bracing required to stabilize and prevent movement of existing ground and to protect and provide for the safety of the Contractor’s workers due to sudden collapse or movement of the existing ground, during excavation and trenching operations, including furnishing all equipment, materials and personnel associated therewith, and in accordance with the project Technical Specifications and California Labor Code 6700-6708.

Bid Item 4 - Traffic Control

2. This bid item includes preparing detailed traffic control plans approved by the City of San Carlos as required; placing, adjusting and removing temporary traffic control measures, such as, but not limited to, flags, cones, barricades, crash barriers, signs, and flaggers (personnel dedicated to controlling and managing traffic), portable changeable message boards, lighted arrow boards, traffic control signs both as required by the Contract Drawings and as part of the approved detailed traffic control plan, detours, lighting, portable A-frame signs, pedestrian and traffic ramps, trench plates, temporary striping, permanent striping, K-rails, pavement markers, traffic signal loops and temporary detection devices, and all incidentals necessary for worker, pedestrian and traffic protection, including furnishing all equipment, materials and personnel associated therewith, and in accordance with the project Technical Specifications.

Traffic control shall be provided for all project work areas and shall be provided for the duration of the project.

Bid Item 5 and 27 – Rehabilitate Existing Sanitary Sewer Manhole and Rehabilitate Existing Sanitary Sewer Manhole - Easement

1. This bid item shall be paid at the unit price bid per each manhole rehabilitated regardless of depth or configuration. Easement rehabilitation of manholes are associated with improvements on Sheets C-29, C-30, C-32.

2. The work to be completed is the rehabilitation of existing brick or concrete sanitary sewer manhole per the Contract Documents.

3. This bid item includes submittals; wastewater bypassing and rerouting; interior manhole cleaning;roots cleaning, coring or chipping to penetrate existing manhole to SECTION 01505

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April 2023
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Technical Specifications
Page TS-5
facilitate pipe bursting/reaming and/or to accept new sewer pipe; connection of new pipe to manhole with sanded manhole adapter sealed with non-shrink grout; partial restoration of channels damaged from contractor’s work; remove manhole rungs including cutting rungs and drilling out minimum 1-inch into manhole wall, filling voids with 100% solids epoxy Sikadur or approved equal; furnish and install manhole rehabilitation materials; dust control; testing; protecting and reinstating pipe ends in structures; cleaning; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 6 – Modify Existing Manhole Channels and Base

1. This bid item shall be paid at the unit price bid per each manhole where the Contract Drawings or the Engineer require the existing channel to be modified, regardless of depth or configuration.

2. The work to be completed is the modification of existing manhole channels and base per the Contract Documents.

3. This bid item includes submittals; wastewater bypassing and rerouting; interior manhole channels and base cleaning; modify existing manhole channel and walls; coring or chipping to penetrate existing manhole to facilitate pipe bursting/reaming and to accept new sewer pipe; demolition of flow channels inside manholes; reconstructing new flow channels within manholes; furnish and install manhole modification materials including channel and base; dust control; cleaning; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 7 – Remove Sanitary Sewer Manhole Rungs

1. This bid item shall be paid at the unit price bid per each manhole where rung removal is specified regardless of depth or configuration.

2. Rung removal for manholes that are to be rehabilitated shall be paid under the “Rehabilitate Existing Sanitary Sewer Manhole” bid item.

3. The work to be completed is the removal of sanitary sewer manhole rungs per the Contract Documents.

4. This bid item includes submittals; wastewater bypassing and rerouting; interior manhole cleaning; removing manhole rungs including cutting rungs and drilling out minimum 1-inch into manhole wall, filling voids with 100% solids epoxy Sikadur or approved equal; dust control; cleaning; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 8 – Remove and Replace Existing Sanitary Sewer Manhole with 48-Inch Concrete Sanitary Sewer Manhole, With or Without Drop Connection

1. This bid item shall be paid at the unit price bid per each manhole removed and replaced SECTION 01505

MOBILIZATION

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regardless of depth.

2. The work to be completed is the demolition and removal of existing concrete or brick manhole, including existing base, and construction of a new concrete sanitary sewer manhole, with or without drop manhole connection, in accordance with the Contract Documents.

3. A drop connection shall be installed where called for in the Contract Drawings in accordance with the contract documents at no additional cost beyond that bid under this item.

4. This bid item includes submittals; additional locating and protecting existing utilities and utility poles; additional coordination with utility companies/agencies as needed; surveying; additional saw cutting, grinding, surface demolition; additional removal and proper disposal of concrete, asphalt, and asphalt containing reinforcing fabric; additional excavation including bedrock excavation where applicable; additional spoil handling and proper disposal; dewatering as needed; wastewater bypassing and rerouting; prepare and compact base; demolition, removal, and proper disposal of all manhole materials including steel, concrete, bricks, and steel reinforcement materials, furnish and install manhole materials including drop connections where shown; standard or watertight frame and cover; dust control; testing; place and compact; connecting and sealing pipe ends in structures; place and compact backfill; place and compact surface restoration and paving, including sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, valley gutters and edge grinding; restoration of landscaping and other surface features; restoration of striping and pavement markings; resetting valve boxes, monuments, and other surface features disturbed by the work; cleaning; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 9 – New 48-Inch Sanitary Sewer Manhole, With or Without Drop Connection

1. This bid item shall be paid at the unit price bid per each manhole constructed regardless of depth.

2. The work to be completed is the construction of a new concrete sanitary sewer manhole as shown on the Contract Drawings. New manholes shall be 48-inch inner diameter unless otherwise shown on Plans.

3. This bid item includes submittals; additional locating and protecting existing utilities and utility poles; additional coordination with utility companies/agencies as needed; surveying; additional saw cutting, grinding, surface demolition; additional removal and proper disposal of concrete, asphalt, and asphalt containing reinforcing fabric; additional excavation; additional spoil handling and proper disposal; dewatering as needed; wastewater bypassing and rerouting as needed; prepare and compact base; locate, furnish and install manhole materials; provide drop connections where shown; standard or watertight frame and cover; dust control; testing; place and compact; connecting and sealing pipe ends in structures; place and compact backfill; place and compact surface restoration and paving, including sidewalks, concrete or brick pavers, concrete paving, sidewalks, curbs, gutters, valley gutters and edge grinding; restoration SECTION 01505

MOBILIZATION

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April 2023
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Technical Specifications
Page TS-7
of landscaping and other surface features; restoration of striping and pavement markings; resetting valve boxes, and other surface features disturbed by the work; cleaning; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Items 10 and 28 – Connect to Existing Sanitary Sewer Manhole and Connect to Existing Sanitary Sewer Manhole - Easement

1. This bid item shall be paid at the unit price bid per each connection installed at the existing manhole. Easement connections are associated with improvements on Sheets C-29, C-30, and C-32.

2. This bid item includes, but is not limited to, excavation; backfill; compaction; materials; coring or chipping to penetrate existing manhole to accept new sewer pipe; connection of new pipe to manhole with sanded manhole adapter sealed with non- shrink grout; and concrete work including partial restoration of channels damaged from Contractor’s work.

3. Connection to an existing manhole to be rehabilitated shall be paid under the “Rehabilitate Existing Sanitary Sewer Manhole” bid item.

Bid Item 11 – Install Pipe Stub (5-Foot Min.) and Reconnect Existing Pipes

1. This bid item shall be paid at the unit price bid per each pipe stub (5-foot minimum) installed regardless of diameter.

2. This bid item includes submittals; locating and protecting existing utilities and utility poles; coordination with utility companies/agencies as needed; surveying; saw cutting, grinding, surface demolition; removal and proper disposal of concrete, asphalt, and asphalt containing reinforcing fabric; trenching; spoil handling and proper disposal; dust control; dewatering the trench as needed; wastewater bypass pumping and rerouting as needed; furnish and install sewer pipe, eccentric reducer if pipe diameters differ and coupling; prepare and compact pipe sub base; over-excavation where shown including proper disposal of materials and placement of foundation materials including geotextile fabric and crushed rock; place and compact pipe bedding; installation of approved manhole adapter; installation of PVC stub and reducer (if required); reconnection of existing pipe; connecting and sealing pipe ends in structures, manholes, cleanouts; place and compact trench backfill including geotextile fabric; place and compact surface restoration and paving, including sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, valley gutters and edge grinding; restoration of landscaping and other surface features; restoration of striping and pavement markings; resetting valve boxes, monuments, and other surface features disturbed by the work; cleaning; pipe testing; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 12 – Abandon Existing Sanitary Sewer Manhole

1. This bid item shall be paid at the unit price bid per each manhole abandoned regardless SECTION 01505

MOBILIZATION

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Technical Specifications
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of depth.

2. The work to be completed is the abandonment of existing concrete or brick manholes, in accordance with the Contract Documents.

3. This bid item includes submittals; additional locating and protecting existing utilities and utility poles; additional coordination with utility companies/agencies as needed; surveying; additional saw cutting, grinding, surface demolition; additional removal and proper disposal of concrete, asphalt, and asphalt containing reinforcing fabric; additional excavation; additional spoil handling and proper disposal; dewatering as needed; wastewater bypassing and rerouting; prepare and compact base; demolition, removal, and proper disposal of manhole materials including steel, concrete, bricks, and steel reinforcement materials; plugging existing main at manhole wall; fill materials; dust control; place and compact backfill; place and compact surface restoration and paving, including sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, valley gutters, driveways, and edge grinding; restoration of landscaping and other surface features; restoration of striping and pavement markings, resetting valve boxes, monuments, and other surface features disturbed by the work; cleaning; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 13 - 6-Foot Point Repair to Existing 6-Inch, 8-Inch, and 10-Inch Sanitary Sewer Main

1. Point repairs shall be paid for when temporary host pipe is provided to facilitate sanitary sewer main rehabilitation by trenchless methods. Point repairs shall also be paid for when permanent new pipe is provided and installed to repair a defect in the existing sanitary sewer main that is to remain in place.

2. These bid items shall be paid at the unit price bid per each interval of 6-foot long sanitary sewer segment repairs. Intervals less than 6-feet shall be rounded up to the nearest 6-feet for purposes of measurement and payment.

3. Point repair pipe material shall be vitrified clay pipe (VCP) in accordance with ASTM C700, Specification for Vitrified Clay Pipe, Extra Strength, Standard Strength, and Perforated.

4. Point repair of existing sewer shall include: submittals; pipe materials; couplings and shear bands if connecting to existing main that is to remain in place; locating, supporting and protecting existing utilities and utility poles; coordination with utility companies/agencies as needed; surveying; saw cutting, grinding; surface demolition; removal and proper disposal of concrete, removal and proper disposal of asphalt and asphalt containing reinforcing fabric; excavation; dust control; spoil handling and proper disposal; trenching; dewatering the trench as needed; wastewater bypass pumping and rerouting; furnish and install VCP sewer pipe; prepare and compact pipe sub base; place and compact pipe bedding; connecting pipe ends; place and compact backfill; place and compact surface restoration and paving, including sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, valley gutters, and edge grinding; restoration of landscaping and other surface features; restoration of striping and pavement markings; SECTION 01505

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April 2023
Submittal
Technical Specifications
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resetting utility boxes, monument and other surface features disturbed by the work; removal and replacement of fencing; protection of landscaping; restoration of landscaping and other surface features; including furnishing all equipment, materials and personnel associated therewith, and in accordance with these Specifications.

Bid Item 14 – CIPP Rehabilitation of Existing 6-Inch Sanitary Sewer Main

1. This bid item shall be paid at the unit price bid per foot of cured-in-place pipe (CIPP) measured from center of manhole to center of manhole. The work includes furnishing all equipment, materials and personnel associated with the following and in accordance with the Contract Documents.

2. Provision and installation of CIPP rehabilitation of the existing 8-inch gravity sewer shall include: Wastewater bypass pumping and rerouting as needed; cleaning of the existing sanitary sewer pipe; pre-CIPP installation CCTV inspection of existing pipe; furnishing and installing CIPP materials, liner installation and curing; post CIPP installation CCTV inspection and pipe testing; reinstatement of all laterals; end seals at each manhole wall, protection and if necessary restoration of disturbed existing landscaping and other structures affected to facilitate CIPP installation; record drawing preparation and submittal.

Bid Items 15 and 29 – Remove and Replace Existing 6-Inch Sanitary Sewer with 6-Inch or 8-Inch DR 17 HDPE Sanitary Sewer Main (Pipe Ream), and Remove and Replace Existing 6-Inch Sanitary Sewer with 6-Inch or 8-Inch DR 17 HDPE Sanitary Sewer Main (Pipe Ream) – Easement

1. This bid item shall be paid at the unit price bid per foot of installed pipe measured from center of manhole to center of manhole. Easement sanitary sewer main is associated with improvements on Sheets C-29, C-30, C-32.

2. Provision and installation of high-density polyethylene (HDPE) gravity sewer pipe using the pipe remaining method shall include: submittals; pre-construction CCTV inspection of the existing pipes to be replaced, including service laterals to the cleanout/property line; pipe materials; locating, supporting and protecting existing utilities and utility poles; coordination with utility companies/agencies as needed; surveying; saw cutting; surface demolition; excavating for pits and intermediate pits; localized excavation and exposing existing underground utilities; locating all active and inactive laterals; excavation and disconnection of all service laterals before pipe reaming; temporary support of existing utilities in excavations; removal and proper disposal of concrete, asphalt, and asphalt containing reinforcing fabric; spoil handling and proper disposal; over-excavation in pit areas and placement of foundation materials including geotextile fabric and crushed rock; connecting and sealing pipe ends in structures; dust control; dewatering the excavation as needed; wastewater bypass pumping and rerouting; furnish and install sewer pipe; testing; backfill and compact access pits and excavations; place and compact surface restoration and paving, including sidewalks, concrete paving, curbs, gutters, valley gutters and edge grinding; restoration of striping and pavement markings; resetting valve boxes, monuments, and other surface features disturbed by the work; removal and replacement of fencing; protection of landscaping and trees; restoration of landscaping and other surface features; cleaning; post installation cleaning, CCTV inspection of main and laterals, and SECTION 01505

MOBILIZATION

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testing of the completed pipe; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 16 – Remove and Replace Existing 8-Inch Sanitary Sewer with 8-Inch or 10- Inch DR 17 HDPE Sanitary Sewer Main (Pipe Ream)

1. This bid item shall be paid at the unit price bid per foot of installed pipe measured from center of manhole to center of manhole.

Bid Item 17 – Remove and Replace 6-Inch or 8-Inch Sanitary Sewer with 6-Inch or 8- Inch Sanitary Sewer Main (Open Cut)

1. This bid items shall be paid at the unit price bid per foot of installed pipe by open cut method measured from center of manhole to center of manhole.

MOBILIZATION

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April 2023
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Technical Specifications
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pipe sub base; over-excavation where shown including proper disposal of materials and placement of foundation materials including geotextile fabric and crushed rock; place and compact pipe bedding; connecting and sealing pipe ends in structures, manholes, cleanouts; place and compact trench backfill including geotextile fabric; CLSM backfill; place and compact surface restoration and paving, including sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, valley gutters and edge grinding; restoration of landscaping and other surface features; restoration of striping and pavement markings; resetting valve boxes, monuments, and other surface features disturbed by the work; cleaning; pipe testing; post-installation cleaning, CCTV inspection of mains and laterals, and testing of the completed pipe; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 18 – Remove and Replace 8-Inch Sanitary Sewer with 10-Inch Sanitary Sewer Main (Open Cut)

1. This bid items shall be paid at the unit price bid per foot of installed pipe by open cut method measured from center of manhole to center of manhole.

2. Provision and installation of SDR 26 polyvinyl chloride (PVC) or DR 17 High Density Polyethylene (HDPE) gravity sewer pipe, as indicated on the plans, by open cut method shall include: submittals; preconstruction CCTV inspection of the existing service laterals to the cleanout/property line; pipe materials; locating, supporting, and protecting existing utilities and utility poles; coordination with utility companies/agencies as needed; surveying; saw cutting; grinding; surface demolition; removal and proper disposal of concrete, asphalt, and asphalt containing reinforcing fabric; excavation of unpaved surfaces, where applicable; trenching; spoil handling and proper disposal; dust control; dewatering the trench as needed; wastewater bypass pumping and rerouting as needed; furnish and install sewer pipe; prepare and compact pipe sub base; over-excavation where shown including proper disposal of materials and placement of foundation materials including geotextile fabric and crushed rock; place and compact pipe bedding; connecting and sealing pipe ends in structures, manholes, cleanouts; place and compact trench backfill including geotextile fabric; CLSM backfill; place and compact surface restoration and paving, including sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, valley gutters and edge grinding; restoration of landscaping and other surface features; restoration of striping and pavement markings; resetting valve boxes, monuments, and other surface features disturbed by the work; cleaning; pipe testing; post-installation cleaning, CCTV inspection of mains and laterals, and testing of the completed pipe; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 19 – Install New 8-Inch Sanitary Sewer Main (Open Cut)

1. This bid items shall be paid at the unit price bid per foot of installed pipe by open cut method measured from center of manhole to center of manhole.

2. Provision and installation of SDR 26 polyvinyl chloride (PVC) gravity sewer pipe by open cut method shall include: submittals; preconstruction CCTV inspection of the SECTION 01505

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existing service laterals to the cleanout/property line; pipe materials; locating, supporting, and protecting existing utilities and utility poles; coordination with utility companies/agencies as needed; surveying; saw cutting, grinding, surface demolition; removal and proper disposal of concrete, asphalt, and asphalt containing reinforcing fabric; trenching; spoil handling and proper disposal; dust control; dewatering the trench as needed; wastewater bypass pumping and rerouting as needed; removal of conflicting existing sanitary sewer pipe; furnish and install sewer pipe; prepare and compact pipe sub base; over-excavation where shown including proper disposal of materials and placement of foundation materials including geotextile fabric and crushed rock; place and compact pipe bedding; connecting and sealing pipe ends in structures, manholes, cleanouts; place and compact trench backfill including geotextile fabric; CLSM backfill; place and compact surface restoration and paving, including sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, valley gutters and edge grinding; restoration of landscaping; restoration of striping and pavement markings; resetting valve boxes, monuments, and other surface features disturbed by the work; cleaning; pipe testing; post-installation cleaning, CCTV inspection of mains and laterals, and testing of the completed pipe; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 20 – Abandon Existing Sanitary Sewer Main or Lateral

1. This bid item shall be paid at the unit price bid per foot of abandoned pipe measured from center of manhole to center of manhole (for mains) or from mainline pipe to property line (for laterals).

2. This bid item shall include: submittals; pipe fill materials; locating existing laterals and connection points; locating, supporting, and protecting existing utilities and utility poles; coordination with utility companies/agencies as needed surveying; saw cutting, grinding, surface demolition; removal and proper disposal of concrete, removal and proper disposal of asphalt; trenching; spoil handling and proper disposal; dust control; dewatering the trench as needed; wastewater bypass pumping and rerouting; place and compact trench backfill; place and compact surface restoration and paving, including sidewalks, concrete or brick pavers; concrete paving, curbs, gutters, and edge grinding; restoration of landscaping and other surface features; restoration of striping and pavement markings; resetting valve boxes, monuments, and other surface features disturbed by the work; cleaning; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents.

Bid Item 21 – Reconnect Sanitary Sewer Lateral (as Directed by the Engineer)

1. This bid item shall be paid at the unit price bid per each 4-inch, 5-inch, or 6-inch sanitary sewer service lateral to be reconnected to the main. The work includes furnishing all equipment, materials and personnel associated with the following and in accordance with the Contract Documents and as directed by the Engineer.

2. This bid item includes;
a. Locating, supporting, and protecting existing utilities, and utility poles; and coordination with utility companies/agencies as needed.

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b. Locating and exposing existing sewer lateral and removing all roots in portions of laterals to be reconnected.
c. Saw cutting, grinding, excavating and properly disposing of surface concrete, including sidewalk, curb, and gutter, and asphalt concrete surfaces, including asphalt containing reinforcing fabric; and where applicable, excavation of unpaved surfaces, retaining walls or curbs, landscaping, and fencing. d. Trenching and proper handling and disposal of excavation spoils, including dust control, trench dewatering and wastewater bypass pumping and rerouting as needed.
e. Removal of existing lateral piping (as necessary for the work as determined to be required from the CCTV inspection conducted under bid items for pipe replacement/rehabilitation); furnishing and installing new wye or fused stub and sewer lateral pipe between main and the section of the lateral to remain by open cut methods; and connecting the service to the main sewer line as shown on the Contract Drawings. Work includes preparing and compacting service lateral sub-base; furnishing, placing and compacting pipe bedding. f. Furnishing, placing, and compacting trench backfill per the Contract Documents.
g. Furnishing, placing, and compacting of surface stabilization as applicable for the original surface removed including but not limited to restoration of existing landscaping, retaining walls, sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, and valley gutters, and fencing disturbed by the work.

Furnishing, placing, and compacting of temporary asphalt pavement as applicable for the original surface removed including daily placement of temporary hot mix asphalt, followed by phased placement of trench-only asphalt concrete base, resetting valve boxes, monuments, and other surface features disturbed by the work; protection of landscaping, trees and other surface features; and restoration of landscaping trees, and other surface features.
h. Cleaning, post installation CCTV inspection, and testing of the installed pipe. i. Record drawing preparation and submittal.

Bid Item 22– Replace Sanitary Sewer Lateral – Average Length 30-Foot (Pipe Burst) (as Directed by the Engineer)

1. This bid item shall be paid at the unit price bid per each 4-inch, 5-inch, or 6-inch sanitary sewer lateral determined in the field to need replacement by pipe bursting. The work includes furnishing all equipment, materials and personnel associated with the following and in accordance with the Contract Documents and as directed by the Engineer. Easement sewer laterals are associated with improvements on Sheets C-6, C-7, C-13, C-15, C-30.

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2. This bid item includes all laterals replaced by pipe bursting regardless of length and depth.

3. No adjustment in unit price will be made for increase or decrease of quantities for this bid item as set forth in the BID SCHEDULE.

4. This bid item includes;
a. Locating, supporting, and protecting existing utilities and utility poles; and coordination with utility companies/agencies as needed. b. Localized excavation and exposing existing underground utilities. c. Saw cutting, grinding, excavating for pits and properly disposing of surface concrete and asphalt concrete surfaces, including asphalt containing reinforcing fabric; and where applicable, excavation of unpaved surfaces, retaining walls or curbs, landscaping, and fencing.
d. Furnishing and installing new wye or fused stub and sewer lateral pipe between main and the cleanout/property line by pipe bursting methods (as determined to be required from the CCTV inspection conducted under bid items for pipe replacement/rehabilitation); furnishing and installing wye or stub, couplings and PVC bends and connecting or fusing the service lateral and wye or stub at the main sewer line as shown on the Contract Drawings. Work includes preparing and compacting service lateral sub-base; furnishing, placing and compacting pipe bedding.
e. Excavation and disconnection of all service laterals before pipe bursting and temporary support of existing utilities in excavations; over-excavation in pit areas and placement of foundation materials including geotextile fabric and crushed rock; connecting and sealing pipe ends in structures; dust control, dewatering the excavation as needed.
f. Backfill and compact access pits and excavations; place and compact surface restoration and paving, including sidewalks, concrete paving, curbs, gutters, and edge grinding
g. Furnishing, placing, and compacting of surface stabilization as applicable for the original surface removed including but not limited to restoration of existing landscaping, retaining walls, sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, and valley gutters, and fencing disturbed by the work.

Furnishing, placing, and compacting of temporary asphalt pavement as applicable for the original surface removed; including daily placement of temporary hot mix asphalt, followed by phased placement of trench-only asphalt concrete base; resetting valve boxes, monuments, and other surface features disturbed by the work; protection of landscaping, trees and other surface features; and restoration of landscaping, trees and other surface features.

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h. Cleaning, post installation CCTV inspection, and testing of the installed pipe. i. Record drawing preparation and submittal.

Bid Item 23 and 30– Replace Sanitary Sewer Lateral – Average Length 30-Foot (Open Cut) (as Directed by the Engineer) and Replace Sanitary Sewer Lateral – Average Length 30-Foot (Open Cut) (as Directed by the Engineer) - Easement

1. This bid item shall be paid at the unit price bid per each 4-inch, 5-inch, or 6-inch sanitary sewer lateral determined in the field to need replacement by open cut method.

The work includes furnishing all equipment, materials and personnel associated with the following and in accordance with the Contract Documents and as directed by the Engineer. Easement sewer laterals are associated with improvements on Sheets C-6, C-7, C-13, C-15, C-30.

2. This bid item includes all laterals replaced by open cut method regardless of length and depth.

3. No adjustment in unit price will be made for increase or decrease of quantities for this bid item as set forth in the BID SCHEDULE.

4. This bid item includes;
a. Locating, supporting, and protecting existing utilities and utility poles; and coordination with utility companies/agencies as needed. b. Localized excavation and exposing existing underground utilities c. Saw cutting, grinding, excavating and properly disposing of surface concrete, including sidewalk, curb, and gutter, and asphalt concrete surfaces, including asphalt containing reinforcing fabric; and where applicable, excavation of unpaved surfaces, retaining walls or curbs, landscaping, and fencing. d. Furnishing and installing new wye or fused stub and sewer lateral pipe between main and the cleanout/property line by open cut methods (as determined to be required from the CCTV inspection conducted under bid items for pipe replacement/rehabilitation); trenching and proper handling and disposal of excavation spoils, including dust control, trench dewatering and wastewater bypass pumping and rerouting as needed.
e. Furnishing, placing, and compacting trench backfill per the Contract Documents.
f. Furnishing, placing, and compacting of surface stabilization as applicable for the original surface removed including restoration of existing landscaping, retaining walls, sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, valley gutters, and fencing disturbed by the work. Furnishing, placing, and compacting of temporary asphalt pavement as applicable for the original surface removed including daily placement of temporary hot mix asphalt, followed by phased placement of trench-only asphalt concrete base; and SECTION 01505

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resetting valve boxes, monuments, and other surface features disturbed by the work.
g. Cleaning, post installation CCTV inspection, and testing of the installed pipe. h. Record drawing preparation and submittal.

Bid Item 24 and 31 – Install or Remove and Replace Sanitary Sewer Cleanout (as Directed by the Engineer) and Install or Remove and Replace Sanitary Sewer Cleanout (as Directed by the Engineer) - Easement

1. This bid item shall be paid at the unit price bid per each sanitary sewer cleanout replaced or installed. Cleanout at the end of a sewer main is associated with improvements on C-11. Easement sanitary sewer cleanouts are associated with improvements on Sheets C-6, C-7, C-13, C-15, C-30.

2. The work to be completed is the replacement and construction of a sewer cleanout as shown on the City’s Standard Details.

3. This bid item includes submittals; locating, supporting and protecting existing utilities and utility poles; and coordination with utility companies/agencies as needed; surveying; saw cutting, grinding, surface demolition; removal and proper disposal of concrete; removal and proper disposal of asphalt; removal and proper disposal of existing fencing; trenching; dust control; spoil handling and proper disposal; excavation; dewatering the trench as needed; wastewater bypassing and rerouting; removal of existing cleanout within limit of work (if present); furnishing and installing new fencing where existing was removed; furnishing and installing a cleanout at property line; furnishing and installing threaded cap and utility box, a stainless steel banded rubber coupling connection at cleanout; provide fittings and couplings with support as needed; place and compact surface restoration and paving, including retaining walls, sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, and edge grinding; restoration of striping and pavement markings, resetting disturbed utility boxes, fences, landscape, hardscape, irrigation, and other surface features disturbed by the work; cleaning; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with these Specifications.

Bid Item 25 – Realign Lateral (Open Cut)

1. This bid item shall be paid at the unit price bid per each 4-inch, 5-inch, or 6-inch sanitary sewer lateral realigned and replaced by open cut method. The work includes furnishing all equipment, materials and personnel associated with the following and in accordance with the Contract Documents and as directed by the Engineer

2. This bid item includes all laterals realigned and replaced by open cut method regardless of length and depth.

3. No adjustment in unit price will be made for increase or decrease of quantities for this bid item as set forth in the BID SCHEDULE.

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4. This bid item includes;
i. Locating, supporting, and protecting existing utilities and utility poles; and coordination with utility companies/agencies as needed. j. Localized excavation and exposing existing underground utilities k. Saw cutting, grinding, excavating and properly disposing of surface concrete, including sidewalk, curb, and gutter, and asphalt concrete surfaces, including asphalt containing reinforcing fabric; and where applicable, excavation of unpaved surfaces, retaining walls or curbs, landscaping, and fencing. l. Furnishing and installing new wye or fused stub and sewer lateral pipe between main and the cleanout/property line by open cut methods (as determined to be required from the CCTV inspection conducted under bid items for pipe replacement/rehabilitation); plug existing pipe to be abandoned; trenching and proper handling and disposal of excavation spoils, including dust control, trench dewatering and wastewater bypass pumping and rerouting as needed. m. Furnishing, placing, and compacting trench backfill per the Contract Documents.
n. Furnishing, placing, and compacting of surface stabilization as applicable for the original surface removed including restoration of existing landscaping, retaining walls, sidewalks, concrete or brick pavers, concrete paving, curbs, gutters, valley gutters, and fencing disturbed by the work. Furnishing, placing, and compacting of temporary asphalt pavement as applicable for the original surface removed including daily placement of temporary hot mix asphalt, followed by phased placement of trench-only asphalt concrete base; and resetting valve boxes, monuments, and other surface features disturbed by the work.
o. Cleaning, post installation CCTV inspection, and testing of the installed pipe. p. Record drawing preparation and submittal.

Bid Item 26 – Utility Crossing Supports

1. This bid item shall be paid at the unit price bid per support provided.

2. This bid item includes: Submittals; additional locating, supporting and protecting existing utilities and utility poles; additional coordination with utility companies/agencies as needed; surveying; additional spoil handling and proper disposal; additional excavation; dewatering the trench as needed; temporary support of existing storm during construction, compaction, forms and formwork; reinforcing steel; concrete; prepare and compact pipe sub base; place and compact pipe bedding; place and compact trench backfill; record drawings; including furnishing all equipment, materials and personnel associated therewith, and in accordance with these Contract Documents.

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Bid Item 32 – Over-excavation (as Directed by the Engineer)

1. This bid item shall be paid at the unit price bid per cubic yard of over-excavation and backfill beyond the limits indicated on the Drawings, as directed by the Engineer. This payment item will be measured in the trench.

2. No adjustment in unit price will be made for increase or decrease of quantities for this bid item as set forth in the BID SCHEDULE.

3. This bid item includes excavating unsuitable existing soil, and including proper disposal of materials and furnishing and placement of foundation materials including geotextile fabric and crushed rock. The work includes furnishing all equipment, materials and personnel associated with the foregoing, and in accordance with the Contract Documents. The Engineer during construction operations will make the determination of unsuitable material.

Bid Item 33 – Mobilization of Hard Rock Excavation Equipment (Revocable)

1. This bid item shall be per site, as defined below, for mobilization of equipment to excavate hard rock conditions.

2. Payment shall be made for seventy-five (75%) percent of the bid item amount at the first progress payment following completion of mobilization of hard rock excavation equipment and appurtenant work items described below. The remaining amount bid for this item shall be due upon satisfactory completion of the hard rock excavation, as determined by the Engineer, and subsequent completion of demobilization of hard rock excavation equipment.

3. This bid item includes payment for acquisition of temporary easements; moving onto the site of all equipment, materials and staff related to hard rock excavation including obtaining and setting up of Contractor’s staging area/yard; furnishing and erecting all needed construction facilities, fencing, project signage, project security, demobilization, photographic and production rate evidence of excavation conditions; progress schedules, reports and meetings. Equipment mobilized shall be appropriate for excavation of the hard rock conditions encountered at each site.

4. No payment for mobilization, or any part thereof, will be approved for payment under the contract until all applicable mobilization items identified in Paragraph 3 above have been completed.

5. This bid item is only applicable to the following sites (including all work pertaining to hard rock excavation within the limits of cited sheets):
a. Site 1: Dartmouth Ave (Sheet C-1)
b. Site 2: Whitman Ct (Sheet C-6)
c. Site 3: Garnet Ave at Saint Francis Way (C-28)
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Bid Item 34 – Hard Rock Excavation (Revocable)

1. Unit Price bid shall not be less than $100/CY. This bid item shall be paid at the unit price bid per cubic yard of hard rock excavation as defined in the Contract Documents.

This payment item will be measured in the trench.

2. Contractor shall furnish a per-cubic-yard cost for excavation to be not higher than $200 per cubic yard, not including mobilization of the equipment required to excavated Hard Rock. Refer to Bid Item 33 for payment of mobilization of hard rock excavation equipment to each applicable site.

3. No adjustment in unit price will be made for increase or decrease of quantities for this bid item as set forth in the BID SCHEDULE.

4. This bid item includes all additional costs for excavation and disposal of hard rock.

The work includes furnishing all equipment, materials and personnel associated with the foregoing, and in accordance with the Contract Documents.

Bid Item No. 35 – Type II Slurry Seal
This bid item shall be paid per square foot (SF) for Type II Slurry Seal shall include full compensation for furnishing all labor, supervision, materials, tools, equipment and incidentals and for doing all the work involved in slurry seal placement, complete in place, including sweeping and clearing all debris from the roadway prior to the slurry seal (including pavement delineators), striping removal (thermoplastic, buttons, markers, and markings); installation of the slurry seal, hand carried notification to nearby residents a minimum of 72 hours prior to application of the slurry seal, protection of existing utility appurtenances such as gate valve covers, utility vaults, storm drains, and clean-up of slurry sand and any construction related materials related to the slurry seal, as shown on the plans, as specified in the Standard Specifications and these Technical Specifications, and as directed by the Engineer.

Bid Item 36 – Utility Verification/Potholes (Revocable)

1. This bid item shall be paid per each utility identified as requiring field verification via preconstruction potholing, as requested by the Engineer. The work includes furnishing all equipment, materials and personnel associated with the following and in accordance with the Contract Documents.

2. This item includes excavation of potholes to locate utilities in critical areas as close as possible as to where excavation is to be done within ten (10) working days of the request by the Engineer. The work includes all excavation, dewatering, backfilling and compaction required to locate existing utilities and repair the road surface in a satisfactory condition. The work includes hand excavation around existing utilities to prevent damage.

3. Location and protection of utilities not designated for preconstruction potholing is the responsibility of the Contractor and no separate payment for such work will be made under the Contract.

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SECTION 01505

MOBILIZATION
PART 1 – GENERAL

1.01 DESCRIPTION
A.

Mobilization shall conform to the applicable provisions in Section 11, Mobilization of the State Standard Specifications.

Mobilization shall include, but not be limited to the following items:

1. 2.

Locating a Construction Staging area at the Contractor’s expense.

Moving on to the site all of Contractor’s equipment required for first month operations.

3. 4.

5. Having all OSHA required notices and establishment of safety programs.

Having the Contractor’s superintendent at the job site full time.

Walking the project sites with the Engineer prior to the start of construction and taking sufficient preconstruction digital photos or DVDs to document existing improvements and provide same to the City. At a minimum, one photograph must be obtained for each 100 feet of construction area with special attention given to environmentally critical areas and areas outside of the public right-of-way. Additional photographs shall be taken as necessary to adequately document the condition of existing improvements to remain. Photographs shall be labeled by station so that upon completion of the construction, or during construction, if necessary, subsequent photographs can be taken from the same control points.

6. Conducting a site inspection and construction survey staking prior to construction to check that the proposed manhole locations and elevations conform to the Contract Drawings and to become familiar with all site conditions, and identify potential obstructions caused by other underground utilities. This also includes locating existing utilities by calling Underground Service Alert at 811 or 800-227-2600.

C. Mobilization shall not exceed five (5%) percent of the contract total compensation amount for all open cut, pipe bursting, pipe reaming, CIPP and civil improvements as defined in the Contract Documents.

PART 2 – PRODUCTS
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PART 3 – EXECUTION
Not Used.
**END OF SECTION**
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SECTION 01560

TEMPORARY CONTROLS
PART 1 - GENERAL

1.01 DESCRIPTION
This Section describes the requirements for temporary controls, such as dust, rubbish, drainage, erosion and sediment, and pollution control in order to execute work expeditiously.

1.02 REFERENCES
A. State of California, Department of Transportation (Caltrans), State Standard Specifications (latest edition)
B. Related Sections:

1. Article 19, Special Provisions – Storm Water Pollution Prevention

2. Article 28, Special Provisions – Street Sweeping

3. SECTION 02200, EARTHWORK

4. SECTION 02800, TRAFFIC CONTROL

1.03 DUST CONTROL
A. Dust control shall conform to the provisions in Section 10, Dust Control, of the State Standard Specifications and these Technical Specifications. No separate payment will be made for any work performed or material used to control dust resulting from public traffic within the right-of-way.

B. The Contractor shall furnish all labor, equipment and means required and shall carry out effective measures wherever and as often as necessary to prevent its operation from producing dust in amounts damaging to property or causing nuisance as defined by the Engineer.

The Contractor shall be responsible for any damage resulting from any dust originating from its operations.

The dust abatement measures shall be continued until the Contractor is relieved of further responsibility by the Engineer.

The use of water shall not be permitted as a substitute for sweeping or other methods of dust control. Only dry sweeping is allowed.

Contractor shall broom sweep daily. The work area shall be left in a neat and presentable condition at the end of each workday.

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G. Contractor shall street sweep the entire work area twice per week using vehicular mechanized street sweeper with vacuum intake for collecting sweepings per Article 28 “Street Sweeping” of the Special Provisions.

1.04 RUBBISH CONTROL
A. Through all phases of construction, including suspension of work and until final acceptance of the project, the Contractor shall keep the worksite and other areas used by it in a neat and clean condition, and free from any accumulation of rubbish and debris.

Contractor shall properly dispose of all excess earth, concrete, asphaltic concrete and debris off job site and clean up the work area at the end of each workday. The work area shall be left in a neat and presentable condition.

The Contractor shall keep its haul roads free from dirt, rubbish, and unnecessary obstructions resulting from its operations. Care shall be taken to prevent spillage on haul routes. Contractor shall obtain all required truck route permits. Any such spillage shall be removed immediately, and the area cleaned by the Contractor.

D. Disposal of all rubbish and surplus materials shall be off the site of construction, at the Contractor’s expense, all in accordance with local codes and ordinances governing locations and methods of disposal, and in conformance with all applicable safety laws, and the requirements of the OSHA Safety and Health Standards for Construction.

1.05 DRAINAGE CONTROL
A.

Provide for the drainage of stormwater and any water applied or discharged on the site in performance of the work.

All stormwater discharged to storm drains shall be clean. Washing mud into storm drains will not be allowed.

Provide adequate drainage facilities to prevent damage to the work, the site, and adjacent property.

Maintain excavations free of water to prevent puddling or running water.

Supplement existing drainage channels and conduits as necessary to carry all increased runoff from construction operations.

F. Contractor is responsible for the flooding of property due to his work under this project.

Contractor is also responsible to make right any damages to work in progress that is caused by flooding. The means and methods the Contractor employs to meet the above requirements are at his discretion.

1.06 EROSION AND SEDIMENT CONTROL
A. Plan and execute construction by methods to control surface drainage. Minimize the amount of bare soil exposed at one time.

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B. Provide temporary measures such as berms, dikes, silt fences, sediment traps, and drains, to prevent water flow.

C. Periodically inspect earthwork to detect evidence of erosion and sedimentation.

Promptly apply corrective measures should erosion and sedimentation be detected.

Perform control in accordance with State and local rules and regulations.

If erosion occurs to trenches or work areas prior to restoration by the Contractor, the Contractor shall be responsible for repair of eroded areas.

1.07 POLLUTION CONTROL
A. Provide methods, means, and facilities to prevent contamination of soil, water, and atmosphere from discharge of noxious, toxic substances, and pollutants produced by the construction operations.

Do not permit sanitary wastes to enter any drain or watercourse other than sanitary sewer.

Do not permit sediment, debris or other substances to enter sanitary or storm sewer.

1.08 STORMWATER POLLUTION PREVENTION PLAN (SWPPP)
A. The Contractor shall be responsible for all storm water pollution prevention. Before starting any work on the project, the Contractor shall submit a SWPPP. The plan shall show the schedule for the erosion control work included in the contract and for all water pollution control measures which the Contractor proposes to take in connection with construction of the project to minimize the effects of the operations upon adjacent streams and other bodies of water. The SWPPP shall be prepared by a Qualified SWPPP Developer (QSD).

The Engineer shall notify the Contractor of any revisions to water pollution control program within 5 days of the revision. The City will not be liable for Contractor failure of implementing any portion of an originally submitted or revised water pollution control program, nor for any delays to the work due to the Contractor’s failure to submit an acceptable SWPPP. The Contractor shall provide a Qualified SWPPP Practitioner (QSP) to oversee implementation of the SWPPP.

Refer to Article 19 “Storm Water Pollution Prevention” of the Special Provisions for additional requirements.

1.09 BEST MANAGEMENT PRACTICES
A. Contractor shall implement best management practices identified in SWPPP to meet the specifications listed in these Contract Documents.

B. Contractor shall provide, inspect, and maintain acceptable BMPs appropriate for the work, as necessary to control and prevent stormwater pollution for the duration of the project.

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C. Contractor shall properly dispose of all wastes and excess materials in a legal manner to the satisfaction of the Engineer.

D. Upon completion of the project, Contractor shall remove all BMPs to the satisfaction of the Engineer.

PART 2 - PRODUCTS
Not Used.

PART 3 - EXECUTION
Not used.
**END OF SECTION**
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SECTION 01720

SEWER OUTAGE NOTIFICATIONS
PART 1 - GENERAL

1.01 DESCRIPTION
This Section describes the requirements for providing advanced notification of construction activities to the City Departments, Residents, and Businesses regarding planned sewer outages.

1.02 GENERAL
The requirements of this section shall be used in coordination with all related technical specification sections, the Contract Documents, and City of San Carlos requirements.

1.03 RELATED SECTIONS
A.

SECTION 01560, TEMPORARY CONTROLS
SECTION 01730, PUBLIC AND AGENCY NOTIFICATIONS
SECTION 02145, SEWAGE FLOW CONTROL
SECTION 02739, BUILDING SEWER (LATERAL) CONSTRUCTION AND

REINSTATEMENT
E.

SECTION 02800, TRAFFIC CONTROL
Article 18, Special Provisions – Notification of Residents and Merchants

1.04 PROJECT REQUIREMENTS
A.

Provide labor, materials, and supervision as required to prepare and deliver sewer outage and construction notifications and to respond to affected residents and businesses.

Contractor shall maintain a local telephone number of contact person for inquiries or complaints.

1.05 SUBMITTALS
The Contractor shall submit a detailed Public and Agency Notification Plan to the Engineer consisting of schedules, sample notices, contact personnel, contact phone numbers, and a detailed timeframe of when notices will be delivered. The Public and Agency Notification Plan shall be submitted in accordance with Article 18 “Notification of Residents and Merchants” of the Special Provisions.

SECTION 01720

SEWAGE OUTAGE NOTIFICATIONS

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Not Used.

PART 3 - EXECUTION

3.01 PUBLIC NOTIFICATION
A. Maintain service usage with the exception of planned outages throughout duration of project.

Maximum amount of no service: 8 hours for any property served by the sewer. Any service out longer than 8 hours shall be bypassed to a sanitary sewer.

B. Public Notification Program

1. 2.

Notify the Engineer at least fourteen (14) days prior to any outage. Update notifications to the Engineer as required to reflect the current work.

Deliver written notices on the Contractor’s letterhead to each home or business fourteen (14) days prior and again 72 hours prior to commencement of work being conducted on section of sewer, including telephone number of Contractor contact for inquires or complaints.

3. 4.

Notifications shall provide instructions to homes and businesses to minimize discharge to the sewer during scheduled work to avoid back-ups.

Notices shall include a summary of the work to be completed, purpose and location of the outage, and the time and duration of service interruption to building.

5. 6.

The Contractor shall communicate verbally with the homeowner/ business owner the day prior to the beginning of work conducted on the section relative to the homeowners/business owners.

The Contractor shall contact any home or business that cannot be reconnected within the time stated in written notice.

Service interruptions shall be strictly limited to the hours of 8:00 AM to 5:00 PM, Monday through Friday.

The Contractor shall coordinate traffic control notifications as required in SECTION 02800 of the Technical Specifications where feasible with the sewer outage notifications.
**END OF SECTION**
SECTION 01720

SEWER OUTAGE NOTIFICATIONS

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SECTION 01730

PUBLIC AND AGENCY NOTIFICATIONS
PART 1 - GENERAL

1.01 DESCRIPTION
This Section describes the requirements for providing advanced notification of construction activities to City Departments, Local Agencies, Residents, and Businesses.

1.02 GENERAL
The requirements of this section shall be used in coordination with all related Technical Specification sections, the Contract Documents, and City of San Carlos requirements.

1.03 RELATED SECTIONS
A.

SECTION 01560, TEMPORARY CONTROLS
SECTION 01720, SEWER OUTAGE NOTIFICATIONS
SECTION 02800, TRAFFIC CONTROL
Article 18, Special Provisions – Notification of Residents and Merchants E. Article 25, Special Provisions – SamTrans Coordination

1.04 PROJECT REQUIREMENTS
A. Provide labor, materials, and supervision as required to prepare and deliver professionally prepared construction notices to affected residents and businesses.

B. Contractor shall maintain a local telephone number of contact person for inquiries or complaints.

PART 2 - PRODUCTS
Not Used.

SECTION 01730

PUBLIC AND AGENCY NOTIFICATIONS

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PART 3 - EXECUTION

3.01 PUBLIC NOTIFICATION
A. In addition to specific project notifications as required in other sections of the project Technical Specifications and Contract Documents, the Contractor shall give seven (7) days and 48-hour Advanced Project Construction Notification to entities and individuals that will be affected by project construction. The following entities and individuals shall be notified in writing of the general construction activities:

1. 2.

3. 4.

5. 6.

All Residents on City Blocks where work will be occurring.

All Businesses on City Blocks where work will be occurring.

City of San Carlos Public Works Department (Project Manager and Inspector).

City of San Carlos Police Department (650) 802-4277.

City of San Carlos Fire Department (650) 780-7400.

City of San Carlos Garbage, Recycling and Tree Trimming Haulers:

Recology San Mateo County (650) 595-3900

7. 8.

San Mateo County Transit District (650) 508 6200.

Affected School Districts, as noted in the Special Provisions.

9. Others as noted in accordance with the Special Provisions.

If an emergency or urgent street closure is required, the Contractor shall immediately notify:

1. City of San Carlos Public Works Department (Project Manager and Inspector).

2. City of San Carlos Police Department (650) 802-4277.

3. City of San Carlos Fire Department (650) 780-7400.

Contractor shall refer to Article 25 “SamTrans Coordination” of the Special Provisions for requirements prior to any work that will disrupt transit service or affect a bus stop.

Public Notification Program:

1. Deliver written notices on the Contractor’s letterhead to each home, business, agency, or department One Week before commencement of construction activities.

2. Notices shall include a project name, a summary of the work to be completed, the location of the work, the expected duration of the work, the hours of work, and a telephone number of Contractor contact for inquires or complaints.

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PUBLIC AND AGENCY NOTIFICATIONS

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3. A second notice shall be delivered to each home, business, agency, or department 48 hours before commencement of construction activities providing the same information detailed in the above item.

D. Address City correspondence to: 600 Elm Street, San Carlos, CA 94070-3085. **END OF SECTION**
SECTION 01730

PUBLIC AND AGENCY NOTIFICATIONS

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SECTION 02050

DEMOLITION, ABANDONMENT, AND REMOVAL
PART 1 - GENERAL

1.01 SUMMARY
A. This specification addresses demolition, removal, and abandonment of trees, facilities, and associated debris generated in the execution of the contract work, including clearing, grubbing and stripping.

1. Do not begin demolition, removal and/or clearing and grubbing until authorization is received from the Engineer.

2. 3.

Remove rubbish and debris from the job site daily.

Store materials that cannot be removed daily in the Contractor’s approved laydown and storage areas, following all requirements established by the property owner and associated permitting jurisdiction.

4. Properly dispose of materials and debris removed from the Project. Disposal shall comply with all federal, state, and local regulations.

B. Related Sections:

1. 2.

Section 01560, TEMPORARY CONTROLS
Section 02800, TRAFFIC CONTROL

1.02 REFERENCES
American National Standards Institute (ANSI):

ANSI A10.6 – Demolition Operations-Safety Requirements

1.03 SUBMITTALS
Submit to the Engineer the following in accordance with the Contract Documents.

A. Demolition Plan, including proposed demolition, tree removal, clearing and grubbing, striping removal, temporary striping, and removal procedures. Demolition Plan shall include a detailed description of methods and equipment to be used for each operation and of the sequence of operations.

B. A plan and coordinated construction schedule for the removal of any existing active facilities and the reconnection of existing system elements to the permanent facilities.

SECTION 02050

DEMOLITION, ABANDONMENT, AND REMOVAL

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1.04 WORK AND SAFETY REQUIREMENTS
Comply with federal, state, and local hauling and disposal regulations. Work safety requirements shall conform to ANSI A10.6, Demolition Operations – Safety Requirements.

1.05 DUST AND DEBRIS CONTROL
A.

Prevent the spread of dust and debris and avoid the creation of a nuisance or hazard in the surrounding area.

Do not use water if it results in hazardous or objectionable conditions such as, but not limited to, flooding or pollution.

Dry-sweep pavements as often as necessary to control the spread of debris that may result in foreign object damage potential to vehicles.

1.06 PROTECTION
A. Traffic Control Signs - Where pedestrian and driver safety is endangered in the area of removal work, use traffic barricades with flashing lights. Refer to the Contract Documents for additional requirements.

B. Existing Work - Protect existing work which is to remain in place. Repair items which are to remain, and which are damaged during performance of the work to their pre- construction condition or replace with new. Do not overload or damage pavements to remain; only rubber-tired excavation equipment will be allowed. Provide new supports and reinforcement for existing construction weakened by demolition or removal work.

Repairs, reinforcement, or structural replacement must have Engineer approval. Refer to the Contract Documents for additional requirements.

C. Facilities - Protect electrical and mechanical services and utilities. Where removal of existing utilities and pavement is specified or indicated, provide approved barricades, temporary covering of exposed areas, and temporary services or connections for electrical and mechanical utilities. Refer to the Contract Documents for additional requirements.

1.07 BURNING AND EXPLOSIVES
Burning and the use of explosives will not be permitted.

1.08 RELOCATIONS
Perform removals and reinstallations of relocated items with workmen skilled in the trades involved. Repair items to be relocated which are damaged or replace damaged items with new undamaged items as approved by the Engineer and governing jurisdiction.

PART 2 - PRODUCTS

2.01 MATERIAL FOR FACILITY ABANDONMENT
Slurry for abandonments shall be 1 ½ - 90 pound sack of Portland Cement per cubic yard of sand slurry.

SECTION 02050

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PART 3 - EXECUTION

3.01 EXISTING FACILITIES TO BE REMOVED
A. Removal of Existing Sanitary Sewer Pipes, Manholes and Related Equipment:

Remove existing sanitary sewer pipes, manholes, manhole rungs, cleanouts and laterals to the horizontal limits shown on the Contract Documents. Existing alignments are shown based on record information. Actual locations of existing utilities may be different from that shown.

B. Paving and Slabs:

1. Remove asphaltic concrete paving and slabs, and concrete paving and slabs, including aggregate base in areas subject to proposed work.

2. Trench wing (T-Cut) width shall be in accordance with typical trench and surface restoration details. Asphalt concrete paving shall be removed a distance from the edge of trench on both sides of the trench as specified in the typical trench and surface restoration details. Where the distance from the lip of concrete gutter to the saw cut edge of the trench is within the width specified in the typical trench and surface restoration details, the remaining pavement between the saw cut edge of the trench and the lip of the concrete gutter shall also be removed and replaced during this work.

3. 4.

Provide neat sawcuts at limits of pavement removal as indicated.

Contractor shall comply with all environmental regulations and local codes and dispose of all material at State approved recycling facilities or landfills identified by the Contractor.

5. Asphalt concrete paving and slabs may contain pavement reinforcing fabric.

Contractor shall include the cost of removing and disposing of pavement reinforcing fabric in applicable items of work.

C. Curb, Gutter (including valley gutter) and sidewalk:

1. Remove curb, gutters and sidewalks, including aggregate base in areas subject to proposed work.

2. Contractor shall comply with all environmental regulations and local codes and dispose of all material at State approved recycling facilities or landfills identified by the Contractor.

D. Median Island:

1. Remove median islands, including landscaping and aggregate base in areas subject to proposed work.

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DEMOLITION, ABANDONMENT, AND REMOVAL

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2. Contractor shall comply with all environmental regulations and local codes and dispose of all material at State approved recycling facilities or landfills identified by the Contractor.

Traffic Loops:

1. 2.

Remove traffic loops in areas subject to proposed work.

Contractor shall comply with all environmental regulations and local codes and dispose of all material at State approved recycling facilities or landfills identified by the Contractor.

Trees:

1. Remove trees as indicated on the Contract Documents.

2. Contractor shall comply with all environmental regulations and local codes and dispose of all material at State approved recycling facilities or landfills identified by the Contractor.

3.02 DISPOSITION OF MATERIAL
Title to Materials:

Except where specified in other sections, or on the Contract Documents, all materials and equipment removed shall become the property of the Contractor and shall be removed.

Title to materials resulting from demolition, and materials and equipment to be removed, is vested in the Contractor upon approval by the Engineer of the contractor's demolition and removal procedures, and authorization by the Engineer to begin demolition.

C. The City will not be responsible for the condition or loss of, or damage to, such property after notice to proceed.

3.03 CLEANUP
Debris (including plant material) and Rubbish:

A. Remove and transport debris, plant material and rubbish in a manner that will prevent spillage on pavements, streets or adjacent areas.

B. Clean up spillage from pavements, streets and adjacent areas.

3.04 PIPELINE ABANDONMENT
Pipelines being abandoned in place, per the Contract Documents shall be capped with Mechanical Joint Ductile Iron Caps and the pipe shall be filled with 1 ½ 90 pound sack of Portland Cement per cubic yard of sand slurry.
**END OF SECTION**
SECTION 02050

DEMOLITION, ABANDONMENT, AND REMOVAL

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SECTION 02145

SEWAGE FLOW CONTROL
PART 1 - GENERAL

1.01 SUMMARY
A. This Project consists of construction of new main sewer, removal and replacement of an existing main sewer, and transfer of existing building sewer connections from existing main sewer to new main sewer. It shall be the Contractor's responsibility to maintain at all times the sewer flows, regardless of volume, through the Project site and from the adjacent properties.

B. Provide bypass pumping during removal and installation of the main sewer.

Accommodate flows at all times from collector and trunk sewer connections at manholes, where they occur. NO SEWAGE FLOW into the trench shall be allowed.

Coordinate directly with residents and businesses to minimize wastewater flows during the scheduled work.

The Contractor may work with residents and businesses to minimize discharge to the sewer and may utilize temporary plugging or flow stoppage from the building sewers (laterals) during the work period if no adverse back up of sewage occurs at connected buildings, otherwise the Contractor shall actively bypass pump from building sewer (lateral) connections and/or cleanouts.

Provide sewer outage notifications per the project Technical Specifications.

This Section specifies the requirements for temporary bypassing, dewatering, and disposal of water and wastewater from the sewer facilities as required to perform the work. Extract, pump, and/or dispose of wastewater from bypassing and dewatering gravity sanitary sewer pipelines, building sewers (laterals), and cleanouts as required.

Sewer flow discharges shall be to the sanitary sewer system.

Dewatering requirements for grading, excavation, backfilling, and compacting are specified in Section 02200.

1.02 PROJECT REQUIREMENTS
A. Provide labor, materials, and full-time supervision, as required, to set up necessary equipment, and contain, bypass, dewater, and dispose of raw wastewater, treated wastewater, and storm drain flows, as necessary, for abandonment, television inspections, point repairs, replacements, connections, rehabilitation, and other modifications made to complete the work.

SECTION 02145

SEWAGE FLOW CONTROL

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B. The Work shall not result in spills into the work area. Spill of sanitary wastewater can result in costs and/or fines levied against the City. In the event that there is a spill, the Contractor shall be responsible for fines, penalties and charges due to sanitary sewer spills resulting from the Contractor’s operations and/or failure of bypass pumping.

C. The work shall not result in water or wastewater flows to surcharge, shall not result in damage to sewers, and shall protect public and private property from damage and flooding. Surcharge shall be defined as the condition where the depth of flow exceeds the crown elevation in any pipe in any existing gravity pipe systems. Water or wastewater discharges or disposals identified in the Bypass Pumping Plan shall be disposed of to the sanitary sewer system.

1.03. RELATED SECTIONS
A.

SECTION 01560, TEMPORARY CONTROLS
SECTION 01720, SEWER OUTAGE NOTIFICATIONS
SECTION 02050, DEMOLITION, ABANDONMENT, AND REMOVAL
SECTION 02200, EARTHWORK
SECTION 02800, TRAFFIC CONTROL
SECTION 15050, GENERAL PIPING

1.04 SUBMITTALS
A.

Prior to any construction the Contractor shall submit a complete Health and Safety Plan as described in the Contract Documents. No entry to any of the existing facilities will be permitted until appropriate work crews are certified for confined space entry and the Health and Safety Plan is reviewed. The Health and Safety Plan shall be developed specifically for the project.

Within five (5) days of Notice to Proceed and at least fourteen (14) days prior to initiating bypass activities, submit a detailed Bypass Pumping Plan consisting of drawings and complete design data in accordance with the Contract Documents.

Submittal shall show all proposed methods, layout, equipment, and discharge locations for bypassing and dewatering.

The Submittal shall include the following information:

1. A site plan showing the size and layout of pumps, valves, and temporary pipelines. Layout shall show how temporary facilities will be protected during use.

2. 3.

4. Narrative description of system staffing and monitoring.

Catalog data on pump controls and audible alarms.

Catalog data for portable generators when electric pumps are used.

SECTION 02145

SEWAGE FLOW CONTROL

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5. 6.

7. Drawings indicating the locations of temporary plugs, taps, pumping systems, suction and discharge piping, and locations of sanitary sewers and manholes to receive discharges of raw or treated wastewater.

Data that includes the locations and elevations of existing sanitary sewer systems, and the capacities of duty and standby pumps, prime movers, power and standby power, and other equipment.

Design calculations that prove the adequacy of the bypassing, dewatering, and disposal system(s) and selected equipment. Design calculations shall confirm that the bypassing and pumping operations shall not cause surcharge in any portion of the existing sanitary sewer system. Design calculations shall be signed and sealed by a civil engineer registered in the State of California qualified to perform said analysis.

8. An emergency response plan that provides, in detail, the procedure to be followed in the event of a failure of the bypass pumping systems. The plan shall include the name and telephone number of the person who will be in charge of the response in an accidental spill and is required to:
a.
b.

Make the maximum effort to stop the spill immediately.

Verbally notify the City of San Carlos within 15 minutes of knowledge of the accidental spill.
c.
d.

Submit a written report within 15 working days of knowledge of the accidental spill explaining the cause, nature, volume and duration of the accidental spill, and the procedures taken to clean up the spill.

If the accidental spill enters the storm drain system or a stream, immediately conduct a sampling and analysis program of the contaminated water body demonstrating up to 21 consecutive days that the stream has recovered to its natural state. The first sample result shall be submitted within 30 days of the accidental spill.

9. Odor and noise mitigation plan
a. Odor and noise mitigation plan shall be in in accordance with the Contractor’s Health and Safety Plan and the requirements of the Contract Documents including but not limited to Technical Specification Sections 02145-3.01-D and 02145-3.06, and Special Provisions Sections 6 and 7.

1.05 JOB CONDITIONS
A. Available Data:

SECTION 02145

SEWAGE FLOW CONTROL

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1. The Contractor shall be responsible for flow verification, design, construction, and operation of an adequate and properly functioning bypass and dewatering system.

2. 3.

Any testing or gathering of flow data is the responsibility of the Contractor.

Coordinate all sewer bypassing and dewatering operations with the Engineer.

B. Protection:

1. Where bypassing is required, ensure that service for connecting laterals is not disrupted. All bypassed flow shall be discharged into the nearest (downstream) sanitary sewer manhole. Take appropriate steps to ensure odor control at the discharge manholes.

2. Bypassing and dewatering operations resulting in discharges to the ground surface, streams, creeks, culverts, ditches, storm drains, or groundwater shall not be permitted. Perform work so as to protect the public from potential health hazards, and to protect the environment from contamination.

Scheduling:

1. The bypassing and dewatering systems shall not be shut down between shifts, during work stoppages, or during any periods when flows through the main sewer have not been properly restored.

2. Provide fourteen (14) days written notice to the Engineer prior to performing all bypassing, dewatering, and disposal work.

Permits and Approvals:

1. 2.

Obtain approval from the Engineer for the proposed Bypass Pumping Plan.

If the Engineer determines that the Contractor's diversion plan is inadequate, the Contractor shall provide equipment, materials, and labor to develop a viable diversion and pumping plan.

3. Prior to plugging any lines, the contractor shall notify the project manager and project inspector, at least 24 hours in advance. Included in this item of work is pumping of local depressions in the pipe that may or may not be shown on the plans.

PART 2 - PRODUCTS

2.01 PUMPS AND GENERATORS
A. The Contractor shall provide suitable “trash-type” primary Sewage pump capable of bypassing all flows around the worksite.

A minimum of two primary pumps are required for each flow control system.

Keep all generators fueled at all times.

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SEWAGE FLOW CONTROL

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D. Generators shall be placed on spill guard mats or other approved double containment devices to eliminate the possibility of fuel spills to ground surface.

2.02 PIPING
A. The sewage flow control piping shall be completely leak free. Any drips or leaks shall be repaired by the Contractor immediately.

B. A minimum of two pipes is required for all sewer bypasses. Each pump may be piped separately to the discharge point, or the pump discharge lines can be manifolded together.

2.03 TEMPORARY BULKHEADS AND PLUGS
A. Design and provide bulkheads and plugs to withstand anticipated upstream differential head without leakage or displacement.

A watertight seal is required to prevent Sewage from entering the work area.

The Contractor shall provide double bulkheads and plugs, both able to withstand upstream head, upstream of locations where persons will be entering the sewer and at all flow diversions. Coordinate installation and removal of bulkheads and plugs with the Engineer.

2.04 STANDBY EQUIPMENT
A. The Contractor shall have available on site sufficient equipment and materials to ensure continuous and successful leak-free operation of the sewage flow control system.

B. The Contractor shall have available on site sufficient number of valves, tees, elbows, connections, tools, sewer bulkheads for different pipe sizes as needed, piping and other parts of system hardware to ensure immediate repair or modifications of any part of the system as necessary.

C. The Contractor shall have on site one standby pump with capacity equal to or greater than the largest primary pump. If the standby pump is electric, a standby generator shall be provided on site. The standby pump shall be operational and shall be connected to the bypass piping to allow immediate standby service at all times.

Generator shall be fueled at all times. Generators shall be placed on spill guard mats or other approved double containment devices to eliminate the possibility of fuel spills to ground surface.

Bypassing and dewatering systems shall have one hundred percent (100%) redundancy.

PART 3 - EXECUTION

3.01 PLUGGING, BLOCKING, AND PUMPING
A. Flow control will be required for this Project. Bypass pumping will be allowed only during Contractor’s working hours. At the end of every working day, flows must be SECTION 02145

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properly restored to the sanitary sewer. Any emergency pumping operations that are required outside of the Contractor’s working hours must be approved in advance by the Engineer.

Furnish, install and operate pumps, plugs, conduits, and other equipment to dewater existing sewer pipelines or to divert the flow of wastewater around the pipeline reach in which work is to be performed, and to maintain service to all properties connected to the sewer being replaced. Plugs shall be so designed that all or any portion of the wastewater can be released. Plugs shall be provided with a tag line.

The pumping system shall be of sufficient capacity to manage existing flows plus additional flow that may occur during a rainstorm. If pumping is required outside normal working hours, engines shall be equipped and/or shielded in a manner to keep noise to a minimum. Noise level shall conform to the noise ordinance requirements of the governing jurisdiction.

Engines shall be equipped with mufflers and/or shall be enclosed to comply with all local noise ordinances. Pumps and bypass lines shall be of adequate capacity and size to handle the flows. All bypassed flow shall be discharged to the nearest downstream manhole.

Bypass pumping shall be completed in such a manner as will not damage private or public property or create a nuisance or public health menace. The pumped wastewater shall be in an enclosed hose or pipe that is adequately protected from traffic and shall be redirected into the sanitary sewer system. Dumping or free flow of wastewater on private property, gutters, trenches, streets, sidewalks, or into storm sewers is prohibited. The Contractor shall be liable for all damages associated with this work.

After the work is completed, flow shall be restored to original conditions and temporary facilities removed.

3.02 SEWER DEWATERING
A.

Extract, pump, and/or dispose of wastewater from dewatering the existing sewers.

Dewater all sagged or submerged portions of the existing sewer as required for abandonment, or as otherwise required to complete the work.

Dewatering of excavations shall be conducted in accordance with the Contract Documents.

Coordinate all work with the Engineer. Comply with the Contract Documents for work outage requests related to City’s existing facilities.

3.03 SEWER BYPASSING
A. Where Contractor’s work on constructing the project pipeline requires sanitary sewers to be removed temporarily from operation, sewer bypassing shall be accomplished by pumping or diverting the upstream flow around the Contractor's work in accordance with this Section.

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B. Unless otherwise specified, sewer flow shall be bypassed around the work whenever the Contractor's equipment is operating in the sewer, or when work related to the sewer provides an obstruction or otherwise restricts flow and causes the depth of flow as measured at the inlet pipe to the upstream manhole adjacent to the Contractor's work to exceed half of the diameter of the pipe.

C. The use of storm sewers for purposes of diverting or pumping sanitary sewer flows shall not be permitted.

3.04 DAMAGES
The Contractor shall pay for all fines and repair without cost to the City any damage that may result from the Contractor’s negligence, inadequate or improper installation, maintenance and operation of bypassing and a dewatering system including mechanical or electrical failures and sewage flow into the trench. Contractor shall also be responsible for all costs associated with reporting the spill, performing the cleanup after a spill, fines, criminal prosecution, and work stoppage.

3.05 MONITORING
A. Provide monitoring of flow levels and pump operation to assure continued operation of bypass pumping.

B. Monitoring by Contractor’s personnel shall take place at all times that bypass pumps are in operation (including 24-hour, around-the-clock operation if required during an emergency). An audible alarm system shall be installed to notify workers when the pumps fail to operate.

C. In the event the pumps fail, workers shall immediately evacuate trenches until the bypass pumping system is operational.

3.06 ODOR MITIGATION
A.

In accordance with the Contract Documents, submit an odor mitigation plan.

When working inside manholes and sewer lines, exercise caution and comply with CAL/OSHA requirements when working in the presence of hydrogen sulfide.

Contractor is warned that the existing sewers and the structures associated with the project may contain high levels of hydrogen sulfide gas, a natural gaseous by-product of sanitary sewage. Take all the necessary precautions, such as portable hydrogen sulfide detectors per CAL/OSHA requirements, to ensure that the environment is safe for those at the work site.

C. No entry to any of the existing facilities will be permitted until appropriate work crews are certified for confined space entry and the Odor/Noise Mitigation Plan and Health and Safety Plan for this project is reviewed.

The Contractor shall be responsible for initiating, maintaining, and supervising all safety precautions and programs in connection with the work.

To minimize the dispersal of sewer odors above ground the Contractor shall:

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1. Seal all open sanitary manholes or access openings in the sewers when his operations have been suspended for a period of two hours or more.

2. During construction operations when open manholes or access openings cannot be sealed, vent and filter hydrogen sulfide gases upstream of the openings in the sewer.

F. Odor related to construction around the work shall be controlled through the use of filters, chemical addition to the wastewater, and masking agents as needed to limit the levels of hydrogen sulfide gas to 5 ppm (by volume) 25 feet from the source or at the outside wall of any habitable structure.

G. Payment for compliance with this Section shall be deemed included in the various other items of work, and no additional compensation will be allowed therefore.

3.07 TRAFFIC IMPACTS
The bypass pumping system must be coordinated with the Traffic Control Plan which may require that bypass piping and facilities be buried in temporary trenches. **END OF SECTION**
SECTION 02145

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SECTION 02200

EARTHWORK
PART 1 - GENERAL

1.01 DESCRIPTION
A. This section includes all earthwork required for construction of the Work. Such earthwork shall include, but not be limited to, the loosening, removing, loading, transporting, depositing, grading, moisture-conditioning, and compacting in its final location of all materials, as required for the purposes of completing the work specified in the Contract Documents. This work shall include, but not be limited to, the furnishing, placing, and removing of sheeting, shoring and bracing necessary to safely support the sides of all excavation; supporting structures above and below ground; all pumping, ditching, draining, dewatering, and other required measures for the removal or exclusion of water from the excavation; filling and compacting to elevations shown on the Contract Documents;allbackfilling around structures and pipe and all backfilling of trenches and pits; the disposal of excess and unsuitable excavated materials; borrow of materials to make up deficiencies for fills; and all other incidental earthwork, all in accordance with the requirements of the Contract Documents.

B. The elevations shown on the Contract Documents of existing features are taken from the best available data and are intended to give reasonably accurate information. The Contractor is responsible to verify provided elevations for more accurate determinations of quantities.

Pits and fills used for the erection of the Contractor’s construction facilities shall be filled or removed upon the completion of the work and leveled to meet the existing contours of the adjacent ground.

After all structures have been completed, the ground surface shall be brought to the finished grade elevations with the relative compaction indicated on the Contract Documents.

All finished ground surfaces shall be bladed and dressed to present a surface not varying over 0.10 foot at local humps or depressions and to the satisfaction of the Engineer. Local depressions where water could accumulate in the future shall be no more than 0.05 foot deep.

F. Contaminated Soil and Contaminated Groundwater: Contaminated soils and contaminated groundwater is n o t expected to be encountered by the Contractor for this project. The Contractor shall comply with the requirements of General Provisions Section 9.12 (a) and (i), if either contaminated soil or contaminated groundwater or both are encountered.

SECTION 02200

EARTHWORK

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1.02 REFERENCES
The State of California - California Labor Code Industrial Standards.

ASTM C136 - Test Method for Sieve Analysis of Fine and Coarse Aggregates.

ASTM D75 - Standard Practice for Sampling Aggregates.

ASTM D1556 - Standard Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method.

ASTM D1557 - Standard Test Methods for Laboratory Compaction Characteristics of soil Using Modified Effort.

ASTM D1633 - Test Method for Compressive Strength of Molded Soil-Cement Cylinders.

ASTM D2166 - Test Method for Unconfined Compressive Strength of Cohesive Soils.

ASTM D2419 - Standard Test Method for Sand Equivalent of Soils and Fine Aggregate.

ASTM D2434 - Standard Test Method for Permeability of Granular Soils (Constant Head).

ASTM D 2435 - Test Method for One Dimensional Consolidation Properties of Soils.

ASTM D 2487 - Classification of Soils for Engineering Purposes.

ASTM D2922 - Standard Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth).

ASTM D3017 - Standard Test Method for Water Content of Soil and Rock in Place by Nuclear Methods (Shallow Depth).

ASTM D4253 - Standard Test Methods for Maximum Index Density and Unit Weight of Soils Using a Vibratory Table.

ASTM D4254 - Standard Test Methods for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density.

ASTM D4829 - Test Method for Expansion Index of Soils.

ASTM D6913 - Standard Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis
ASTM D7928 - Standard Test Method for Particle-Size Distribution (Gradation) of SECTION 02200

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Fine-Grained Soils Using the Sedimentation (Hydrometer) Analysis ASTM G51 - Standard Test Method for Measuring pH of Soil for Use in Corrosion Testing.

Caltrans Test 417 - Method of Testing Soils and Waters for Sulfate Content.

Caltrans Test 422 - Method of Testing Soils and Waters for Chloride Content.

Caltrans Test 643 - Method for Estimating the Service Life of Steel Culverts, Part 1 “Method of Field Resistivity Survey and Sampling for Laboratory Tests” and Part 4 “Laboratory Method of Determining Minimum Resistivity”.

Section 6705 of the California Labor Code and Standard Specifications for Public Works Construction (SSPWC) Section 306-1.1
State of California, Department of Transportation (Caltrans), State Standard Specifications (latest edition)

1.03 RELATED SECTION
A.

Section 4, General Provisions
Section 6, General Provisions
Section 9, General Provisions
Article 8, Special Provisions – Protection of Trees
Article 11, Special Provisions – Caltrans Encroachment Permit Article 30, Special Provisions – Geotechnical Report and CCTV Video Article 31, Special Provisions – Construction Submittals Section 02050, Demolition, Abandonment and Removal
Section 02500, Asphalt Concrete Paving
J. Section 03123, Controlled Low Strength Material

1.04 GEOTECHNICAL REPORT
A. The Geotechnical Investigation Report presents various surface and subsurface data.

The Geotechnical report can be made available for reference only. a. Refer to Article 30 “Geotechnical Report and CCTV Video” of the Special Provisions for means of obtaining a copy of the Geotechnical Investigation Report.
b. The Geotechnical report provides recommendations to the design team and SECTION 02200

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those recommendations have been incorporated in these plans and specifications. The report is provided for reference, and the Contractor is responsible for familiarizing itself with the factual aspects of that report. The Contractor is reminded that actual conditions encountered may vary, and that the hierarchy of contractual documents applies as outlined in the Contract Documents.

1.05 SUBMITTALS
A. Submit data in accordance with General Provisions Section 4 and Special Provisions Section 31 “Construction Submittals”.

B. The Contractor’s attention is directed to the provisions for Shoring and Bracing Drawings in Section 6705 of the California Labor Code and Standard Specifications for Public Works Construction (SSPWC) Section 306-1.1. The Contractor, prior to beginning any trench or structure excavation 5 feet deep or over shall submit to the Engineer and shall be in receipt of the Engineer’s written acceptance of the Contractor’s detailed plan showing design of all shoring, bracing, sloping of the sides of excavation, and other provisions for worker protection against the hazard of caving ground during the excavation of such trenches or structure excavation. The plans shall be prepared by a qualified civil or structural engineer licensed in the State of California and employed by an independent design consultant firm insured against errors and omissions to the extent required by the Engineer. The submittal(s) shall include a site location map referencing existing features; detailed plans; elevations, and various sections indicating all excavation slopes, shoring components and connections and showing all structures and utilities potentially influenced by the performance of shoring, trenching or structure excavation along with supporting calculations; notes including sequence of construction, materials, and other clarification as required by the California Labor Code, SSPWC, and the Contract Documents.

The Contractor shall submit for the Engineer’s review, drawings and data showing his proposed design and plan for dewatering of all work areas, which shall include the planned method of dewatering, excavation and shoring, the location and capacity of such facilities as dewatering wells, well points, pumps, sumps, collection and discharge lines, points of discharge, the standby units proposed, protective fills and ditches required for control of groundwater and surface water, and sealing measures of desilting tanks for odor control, if applicable.

Review by the Engineer shall not relieve the Contractor of the responsibility for the adequacy of the dewatering and excavation plan or for furnishing all equipment, labor, and materials necessary for performing the various parts of the work. If, during the progress of the work, it is determined by the Engineer that the dewatering system and excavation plan are inadequate or the Contractor’s plan of construction inoperative, the Contractor shall, at his expense, furnish, install and operate such additional dewatering equipment as may be necessary to perform the work in a manner satisfactory to the Engineer.

E. Submit backfill and compaction procedures.

SECTION 02200

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F. Not used
G. Submit contaminated soils handling, removal, and replacement in accordance with General Provisions Section 9.12 (a) and (i).

Submit material certifications for each material specified and used in this section.

Submit utility support plan for existing utilities 16-inch outside diameter and larger that are anticipated to cross the proposed pipe, any box structure crossing the proposed pipe, and any infrastructure which parallels or roughly parallels the proposed pipe and is anticipated to be within 3’ clear from the edge of the proposed trench.

1.06 DEFINITIONS
A.

Pavement Zone: The pavement zone includes the asphalt concrete and aggregate base pavement section placed over the trench backfill and on either side of the edge of trench.

Street Zone: The street zone is the top 30 inches of the trench immediately below the pavement zone in paved areas beneath paved portions of the right-of-way, curbs, gutters and sidewalks.

Trench Zone: The trench zone includes the portion of the trench from the top of the pipe zone to the bottom of the street zone in paved areas or to the existing surface in unpaved areas.

Pipe Zone: The pipe zone shall include the full width of trench from the bottom of the pipe or conduit to 12 inches above the top of the pipe, as specified below. Where multiple pipes or conduits are placed in the same trench, the pipe zone shall extend from the bottom of the lowest pipe.

Pipe Bedding Zone: The pipe bedding zone shall be defined as a layer of material immediately below the bottom of the pipe or conduit and extending over the full trench width on which the pipe is bedded to a depth of 6 inches below the base of the pipe. Thickness of pipe bedding zone shall be as follows unless otherwise shown in the Plans or otherwise described in the specificationsfor the particular type of pipe installed or otherwise required by permit.

Soft Rock Excavation: Rock excavation within a trench is defined as excavation in material that cannot, in the Engineer’s opinion, be reasonably loosened or ripped with a hydraulic excavator with a net minimum flywheel rating of 300 horsepower fitted with a narrow bucket and teeth, such as a Caterpillar 345B L Series II UHD; and which must be systematically drilled and broken by a power-operated hammer, hydraulic rock breaker, expansive compounds, or other similar means prior to removal. Rock excavation outside a trench is defined as excavation in material that cannot, in the Engineer’s opinion, be reasonably loosened or ripped with a track mounted tractor with a net minimumflywheel rating of 300 horsepower fitted with a single tooth ripper, such as a Caterpillar D8T; and which must be systematically drilled or broken by a SECTION 02200

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power-operated hammer, hydraulic rock breaker, expansive compounds, or other similar means prior to removal. Blasting is not allowed. The term “soft rock excavation” does not necessarily correspond to “rock” as implied by names of geologic formations. This provision includes soil excavation.

G. Hard Rock Excavation: Refer to Article 30 “Geotechnical Report and CCTV Video” of the Special Provisions. The Engineer shall make the determination as to whether material is classified as hard rock.

1.07 SAFETY MEASURES
A. Safe conditions shall be maintained at the jobsite meeting all provisions of the California OSHA and all other applicable safety codes. Barricades and lighting meeting the requirements of all agencies having jurisdiction shall be placed at each end of all excavations and at such places as may be necessary along excavations to protect and warn all pedestrians and vehicular traffic of such excavations. Lights shall also be placed along excavations from sunset each day to sunrise of the next day until such excavation is entirely backfilled, compacted, and paved. This fence shall be constructed to prevent any person from entering the excavation. Signs stating "Danger, Deep Hole" shall be clearly displayed on all sides of the excavation.

B. Safe and suitable ladders that project 2 feet above the top of the trench shall be provided for all trenches greater than 4 feet in depth. A minimum of one ladder shall be provided for each 50 feet of open trench.

1.08 QUALITY ASSURANCE
A. The Contractor shall coordinate and perform compaction tests through a third-party testing facility. The Contractor shall stop work as required to provide safe access to conduct the tests.

B. If the Contractor repeatedly fails to meet relative compaction requirements, the Engineer will monitor soils compaction efforts by the Contractor using a testing facility of the Engineer’s choice at Contractor’s expense.

The Contractor shall make all necessary excavations for compaction tests as directed by the Engineer. All work in connection with compaction testing by the Contractor shall be included in the various contract bid prices, and no additional allowance will be made, therefore.

C. In accordance with SSPWC, soil material is required to be compacted to a percentage of maximum dry density. The maximum dry density at optimum moisture content will be determined in accordance with the latest version of ASTM D 1557. In-place field density tests will be performed in accordance with ASTM D 1556, (sand cone) and/or ASTM D 6938 (nuclear gauge). The type, number and location of field density tests will be determined by the Engineer. One sand-cone test (ASTM D 1556) will be taken for every four nuclear tests (ASTM D 6938). If soil material is not within two (2) percentage points of optimal moisture content, the Contractor shall either add water SECTION 02200

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or dry the soil material by moving the soil to aerate it sufficiently such that the optimum moisture content is achieved at no additional cost to the City.

All imported fill material shall be sampled at the Contractor’s expense and shall be subject to approval by the Engineer.

Where imported fill material is required to possess certain gradation, strength, and settlement properties, the grain size distribution of soils will be determined using ASTM D6913 and D7928, the gradation of concrete aggregate and base materials will be determined using ASTM C136, the sand equivalent of soils will be determined using ASTM D2419, the consolidation of soils will be determined using ASTM D2435, the unconfined compressive strength of soils will be determined using ASTM D2166, and the expansion index of soils will be determined using ASTM D 4829.

F. Testing of soils shall also comply with any permit conditions included as part of this contract.

PART 2 – MATERIALS

2.01 SUITABLE FILL AND BACKFILL MATERIAL REQUIREMENTS
A. General: Fill, backfill, and embankment materials shall be suitable selected or processed clean, fine earth, rock, or sand, and free from grass, roots, brush, or other vegetation; contamination; or deleterious material. Onsite excavated soil shall be tested for contamination prior to processing or reuse. All contaminated soil regardless of type shall be hauled off site for proper disposal at no additional expense to the City. Refer to General Provisions Section 9.12 (a) and (i), for testing and disposal methods.

Suitable materials may be obtained from onsite excavations, may be processed onsite materials, or may be imported provided these materials meet all the requirements in the Contract Documents. All required testing and test reports associated with suitable materials shall be at no additional expense to the City.

Select material: Select material shall be free from organic matter or debris. All of the material shall pass through a 1-1/2-inch screen. Not more than 10 percent by weight shall pass the No. 200 sieve and the material shall have sufficient gradation to compact as directed in the tabulation in Article 3.11.E of this specification section. Use of select material shall be subject to the Engineer’s approval.

Unclassified fill: Unclassified fill shall consist of all fill unless separately designated.

Granular Soil: Wherever the term “granular soil” or “granular fill” is used in the Contract Documents, it shall be defined as a soil having a minimum sand equivalent of 30 as determined in accordance with the latest revision of ASTM D 2419 and not more than 20 percent of it by weight will pass through a No. 200 sieve.

The following types of suitable granular materials are designated and defined as described below:

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1. 2.

3. Crushed Aggregate Base (CAB) shall conform to the requirements of Section 6 of the State Standard Specifications.

Crushed Miscellaneous Base (CMB) shall conform to the requirements of Section 6 of the State Standard Specifications.

Crushed Rock: Crushed rock shall be the product of crushing rock or gravel.

Fifty percent of the particles retained on a 3/8-inch sieve shall have their entire surface area composed of faces resulting from fracture due to mechanical crushing. Not over 5 percent shall be particles that show no faces resultingfrom crushing. Less than 20 percent of the particles that pass the 3/8-inch sieve and are retained on the No. 7 sieve shall be waterworn particles. Gravel shall not be added to crushed rock.

Where crushed rock is specified on the Contract Documents, it shall conform to the following gradation:
3/4-inch Maximum Crushed Rock
Sieve Sizes
2 inches
1 1/2- inches
1 inch
3/4 inch
1/2 inch
3/8 inch
No. 4
% Passing
-
-
100
90-100
30-60
0-20
0-5
No. 8 -
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4. Drainrock shall be crushed rock or gravel, durable and free from slaking or decomposition under the action of alternate wetting or drying. The material shall be uniformly graded and shall meet the following gradation requirements:

Sieve Size % Passing
1001-inch
3/4-inch
3/8-inch
No. 4
90 - 100
40 - 100
25 - 40
18 - 33
5 - 15
No. 8
No. 30
No. 50
No. 200
0 - 7
0 - 3
The drainrock shall have a sand equivalent value not less than 75. The finish- graded surface of the drainrock immediately beneath hydraulic structures shall be stabilized to provide a firm, smooth surface upon which to construct reinforced concrete floor slabs.

2.02 NATIVE EARTH BACKFILL - TRENCH ZONE
A. Native earth backfill used in the trench zone shall be native granular material free from roots, debris, and organic matter with less than 50% passing the No. 200 sieve and with no more than 60% gravel (i.e., not less than 40% passing the No. 4 sieve) and rock particles with a maximum dimension no greater than 4 inches.

B. If and where site earthwork is performed during or shortly after wet weather, and where excavations extend into wet soils, then these soils will be significantly over optimum moisture. Wet soils over optimum moisture will be difficult to adequately compact for trench backfill under pavements. If and where significant pumping, rutting and yielding occurs when compaction is attempted, then wet weather mitigation measures shall be implemented. The Contractor shall be required to stabilize trench bottoms with crushed rock, or similar means, and seal trenches to prevent groundwater intrusion into the trench. Under the direction of the Engineer, such measures shall include but are not necessarily limited to:

1. Mixing or completely replacing wet soils with dryer granular soils either on-site and/or imported,

2. 3.

4. Disking, aerating and/or otherwise drying back wet soils, Importing crushed rock and/or aggregate base to stabilize a wet subgrade, Stabilizing the subgrade with either a geogrid or geotextile covered with crushed rock or aggregate base,

5. Cement stabilization
SECTION 02200

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C.

Wet soil stabilization measures shall not be performed in such a manner as to create a conduit for groundwater to flow along which may lead to the transportation of contaminated groundwater along the length of pipe.

Wet soils excavated from the trench bottoms shall be replaced with imported soils with less moisture content.

2.03 IMPORTED SAND
A. Imported sand shall have the following gradation:

Sieve Size
1/4 inch
No. 4
% Passing
100
70 - 100
35 - 75
10 - 40
0 - 10
No. 16
No. 50
No. 200
B.

Imported sand shall have a coefficient of permeability greater than 0.014 measured in accordance with ASTM D2434 or a minimum sand equivalent of 30 per ASTM D2419.

Minimum resistivity for "Imported Sand" backfill shall be 2,000 ohm-cm in accordance with Caltrans Test 643. Imported sand shall have a maximum chloride concentration of 200 mg/l in accordance with Caltrans Test 422 and maximum sulfate concentration of 500 mg/l in accordance with Caltrans Test 417.

2.04 PIPE BEDDING AND TRENCH BACKFILL ZONES
A. Pipe bedding and initial backfill material shall be Class 1, Type A Permeable material in conformance with Section 68-2.02F of the State Standard Specifications.

B. Trench backfill materials shall ¾-inch maximum, Class II Aggregate Base (Class II AB). 3/4-inch maximum Class II AB material shall conform to Section 26-1.02 of the State Standard Specifications, and City Standard Specifications.

D.
¾-inch maximum Class II AB shall be free from roots, vegetable matter, or other deleterious substances and shall be of such nature and so graded that it will bind readily when watered and compacted to the requirement specified herein.

When tested in accordance with Section 6 of State Standard Specifications, the material shall be of such size that the percentage composition by weight, as determined by laboratory sieves, will conform to the following gradation:

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Sieve Size
1 inch
Percent Passing
100
3/4 inch
No. 4
90-100
35-60
No. 30 10-30
No. 200 2-9
E. The material shall also conform to the following quality requirements:

Tests California Test
Method No.
301
Requirements
(Min.)
78Resistance (R-
value)
Sand Equivalent 217 22
F. The material shall be compacted as shown on the Drawings, in accordance with the requirements of the tabulation in Article 3.11.E Compaction Requirements, and as determined by California Test Method No. 216 or California Test Method No. 231.

2.05 TRENCH PLUG MATERIAL
Trench Plug material shall be low permeable fill material, a non-dispersible clay material having a minimum plasticity index of 10.

Soils which, when classified under ASTM D 2487 - Standard Classification of Soils for Engineering Purposes (Unified Soil Classification System) which are suitable for trench plug shall be one of the following:

A. Soil Type ML: Inorganic silts, very fine sands, rock flour, silty or clayey fine sands.

Liquid limit 50 percent or less. 50 percent or more passing the No. 200 sieve.

B. Soil Type CL: Inorganic clays of low to medium plasticity, gravelly clays, sandy clays, lean clays. Liquid limit 50 percent or less. 50 percent or more passing the No. 200 sieve.

C. Soil Type Cement-Treated or Lime-Treated Backfill: Any of the materials form Class I, II, III, or VIII or mixture thereof treated with a minimum of 5 percent by weight cement to obtain a 28-day compressive strength of not less than 400 psi.

Soil Type CLSM: Controlled Low Strength Material or Controlled Density Fill in accordance with Section 03123, Controlled Low Strength Material.

Soils which, when classified under ASTM D 2487 - Standard Classification of Soils for Engineering Purposes (Unified Soil Classification System), fall in the classifications of Pt, OH, CH, MH, or OL shall be classified as unsuitable.

2.06 ROCK REFILL FOR FOUNDATION STABILIZATION AND OVEREXCAVATION SECTION 02200

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A.

Rock refill shall be 1” crushed or natural rock meeting the following requirements and having the following gradation.

The portion of the material that is larger than will pass a 3/8 sieve shall contain at least 50 percent of particles having three or more fractured faces. Not over 5 percent shall be pieces that show no such faces. Of that portion which passes the 3/8 sieve, but is retained on the No. 4 sieve, not more than 10 percent shall be gravel particles.

Sieve Size
1-1/2inch
1 inch
% Passing
100
90 - 100
30 - 60
0 - 20
3/4 inch
1/2 inch
No. 4 0 - 5

2.07 CONCRETE FOR PIPE ENCASEMENT
Concrete for pipe encasement shall be per Section 03300 Cast-In-Place Concrete unless otherwise shown on the Contract Documents.

2.08 WATER FOR COMPACTION
Water used in compaction shall have a maximum chloride concentration of 500 mg/1 as measured by Caltrans Test 422, maximum sulfate concentration of 500 mg/l as measured by Caltrans Test 417, and shall have a pH of 7.0 to 9.0 as measured by ASTM G51. Water shall be free of organic materials injurious to the pipe coatings.

2.09 TOPSOIL MATERIAL
Topsoil material shall conform to the requirements of SSPWC Section 212-1.1.

2.10 GEOTEXTILE FABRIC
The geotextile shall be non-woven, needle punched construction, and consist of long-chain polymer fibers or filaments composed of polypropylene, polyethylene, or polyamide. The fibers and filaments shall be oriented into a stable network whereby they retain their positions with each other. The textile shall be free of any chemical treatment or coating which reduces permeability. The fabric shall be permeable, not act as a wicking agent, be inert to commonly encountered chemicals, be rot-proof, and resistant to ultraviolet light.

The geotextile fabric shall also conform to the following physical properties:

Property Test value Test method
ASTM D4632
ASTM D4632
Tensile strength
Elongation at break
160 lb. (min.)
50% (max.)
SECTION 02200

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CBR Puncture strength
Permittivity
410 lb. (min.) ASTM D6241
ASTM D44911.4 sec-1 (min.)
PART 3 – EXECUTION

3.01 CLEARING, GRUBBING AND STRIPPING
Clearing, grubbing and stripping, if any, shall be performed in accordance with Section 02050 Demolition, Abandonment and Removal.

3.02 GRADING AND STOCKPILING
A. The Contractor shall control grading in a manner to prevent water from running into excavations. Obstruction of surface drainage shall be avoided and means shall be provided whereby storm water flow is not interrupted in existing gutters, and other surface drains, or temporary drains. Storm water management plans shall be as specified in the Standard Specifications, General Conditions and Special Conditions of theseSpecifications.Material for backfill or for protecting excavation in public roads from surface drainage shall be neatly placed and kept shaped so as to cause the least possible interference with public travel. Free access must be provided to all fire hydrants, water gates, meters, and private drives. Stockpiling of excavated material is not allowed in the street right-of-way.

B. Finished grading at any point shall not vary more than 0.10 foot above or below the grade established by the Contract Documents.

3.03 STRUCTURE, ROADWAY, AND EMBANKMENT EXCAVATION
A. General: Except when specifically provided to the contrary, excavation shall include the removal of all materials of whatever nature encountered, including all obstructions of any nature that would interfere with the proper execution and completion of the work. The removal of said materials shall conform to the lines and grades shown or ordered. Unless otherwise provided, the entire construction site shall be stripped of all vegetation,debris,and all deleterious materials and such materials shall be removed from the site prior to performing any excavation or placing any fill. The Contractor shall furnish, place, and maintain all supports and shoring that may be required for the sides of the excavations, and all pumping, ditching, or other measures for the removal or exclusion of water, including taking care of storm water, groundwater (dewatering if required), and wastewater reaching the site of the work from any source so as to prevent damage to the work or adjoining property. Excavations shall be sloped or otherwise supported in a safe manner in accordance with applicable State of California safety requirements and the requirements of OSHA Safety and Health Standards for Construction (29CFR1926), and the Contract Documents.

B. Structure excavation shall conform to the dimensions and elevations indicated on the Contract Documents for each structure including trenching for adjacent piping. In locations where soil of suitable bearing value is encountered at a different elevation from that indicated on the Contract Documents, the Engineer may direct in writing that the excavation be carried to elevations above or below those SECTION 02200

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indicated on the Contract Documents. Excavation shall extend at least 24 inches from walls and footings to allow for placing and removal of forms, installation of services, and inspection. Undercutting will not be permitted.

C. Where a structure would be located partially on fill and partially on undisturbed native material, the entire area shall be over-excavated to a depth of 5 feet below the elevations indicated and re-compacted as directed in the tabulation in Article 3.11.E of thisspecification section.

Safe and suitable ladders that project 2 feet above the top of the trench shall be provided for all trenches greater than 4 feet in depth. A minimum of one ladder shall be provided for each 50 feet of open trench.

Excavation Beneath Structures and Embankments: Except where otherwise specified for a particular structure or ordered by the Engineer, excavation shall be carried to the grade of the bottom of the footing or slab. Where shown or ordered, areas beneath structures or fills shall be over-excavated. The subgrade areas beneath embankments shall be excavated to remove not less than the top 8 inches of native material and where such subgrade is sloped, the native material shall be benched. When such over- excavation is shown, both over- excavation and subsequent backfill to the required grade shall be performed by the Contractor. When such over-excavation is not shown on the plan and not specified but is ordered by the Engineer, such over-excavation and any resulting backfill will be paid for under a separate unit price bid item if such bid item has been established and approved by the Engineer prior to commencing the work; otherwise payment will be made in accordance with a negotiated price. After the required excavation or over-excavation has been completed, the exposed surface shall be scarified to a depth of 8 inches, brought to optimum moisture content, and rolled with heavy compaction equipment to obtain the required relative compaction.

F. Excavation in Poor Soil: If excessively wet, soft, spongy, unstable, or otherwise unsuitable material, as determined by the Engineer, is encountered at the bottom of the excavationor the surface upon which the pipe bedding material is to be placed including the vertical sides of a specified pipe trench, the unsuitable material shall be removed to a depth as required by the Engineer, disposed of, and replaced with approved fill or bedding material. Removal and replacement of material so ordered shall be paid for by the City as "Extra Work" unless provided for in the Schedule of Prices. The Contractor shall maintain adequate dewatering procedures to ensure that an otherwise stable foundation will not be rendered unfit due to accumulation or movement of water in the excavation. If the necessity for such additional excavation and material has been occasioned by an act or failure to act on the part of the Contractor, the Contractor shall bear the full expense of the additional excavation and backfill to the required depth.

G. Overexcavation: Where excavation is carried below the limits shown on the Contract Documents, adjustments shall be made as determined by the Engineer to meet requirements incurred by the deeper excavation beneath pipe or structure.

Overdepth excavation in such locations shall be rectified by backfilling with approved fill or bedding material or other means specified. Overexcavation not required by the Contract Documents or directed by the Engineer shall be rectified at the expense of SECTION 02200

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the Contractor.

H. Excavation Beneath Paved Areas: Excavation under areas to be paved shall extend to the bottom of the aggregate base, if such base is called for; otherwise it shall extend to the paving thickness. After the required excavation has been completed, the exposed surface shall be scarified to a depth of at least 12 inches, brought to optimum moisture content, and rolled with heavy compaction equipment to obtain a minimum percent of compaction as directed in the tabulation in Article 3.11.E of this specification section.

I. Excavation Subgrade and Below Subgrade:

1. Excavate and shape subgrade to line, grade, and cross-section shown on Drawings.

Following receipt of written acceptance for the subgrade by the Engineer and local building official, compact the subgrade with approved equipment until the top 6-inches is compacted to 95 percent of maximum dry density at optimum moisture content as determined by ASTM D 1557, depending upon the appropriate zone or location of fill in accordance with the requirements of the tabulation in Article 3.11.E Compaction Requirements of this specification section. Remove all soft, loose, or otherwise unsuitable material and replace with suitable sandy material. The finished subgrade shall be firm, hard and unyielding. The subgrade shall be considered to extend over the full width of the base course. Compaction shall extend 18 inches beyond the edge of paving, curb, or form.

2. Where the Engineer deems subgrade material to be unsatisfactory, excavation below subgrade will be required to such depths as necessary to remove the unsatisfactory material. Excavation below grade shall be of the same classification as that above it, provided it is removed in the same operation as the normal excavation. Special equipment or hand excavation may be required because of the presence of shallow utilities or other unforeseen conditions.

J. Notification of the Engineer: The Contractor shall notify the Engineer at least 2 working days in advance of completion of any structure excavation and shall allow the Engineer a review period of at least one day before the exposed foundation is scarified and compacted or is covered with backfill or with any construction materials.

3.04 PIPELINE AND UTILITY TRENCH EXCAVATION
A. Trench Width: the overall trench width shall be as depicted on the Contract Documents. Excavating and trenching shall be true to line so that the pipe is centered within the trench and a clear space of not more than as depicted on the Contract Documents. The largest outside diameter shall be the outside diameter of the bell, on bell and spigot pipe.

B. Limit of Open Trench: Except by express written permission of the Engineer, the SECTION 02200

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maximum amount of open trench permitted in any one location shall be 500 feet, or the length necessary to accommodate the amount of pipe installed in a single day, whichever is less. All trenches shall be fully backfilled and base paved with the first course of pavement at the end of each day or, in lieu thereof, shall be covered by non- skid heavy steel plates adequately braced, secured with cutback, and capable of supporting vehicular traffic in those locations where it is impractical to backfill at the end of each day. Steel plating shall be in conformance with State Standards.

Overlapping plates shall be tack welded to mitigate traffic noise created. Steel plates located within the traveled way shall be limited to 100 feet at each location, unless otherwise approved by the City. Base paving finished to grade shall be flush with existing grade and finished smooth to create a smooth ride. The above requirements for backfilling or use of steel plate will be waived in cases where the trench is located further than 100 feet from any traveled roadway or occupied structure. In such cases, however, barricades and warning lights meeting OSHA requirements shall be provided and maintained. The maximum working length allowed without the first course of pavement is 500 feet unless approved in advance by the Engineer.

Contractor shall comply with all permit requirements.

C. Trench Bottom: The bottom of the trench shall be excavated uniformly as shown on the Contract Documents. The pipe bedding shall be placed on the trench bottom and shall be given a final trim, using a string line for establishing grade, such that each pipe section when first laid will be continually in contact with the pipe bedding along the extreme bottom of the pipe. Trench bottom raked by toothed excavators is not acceptable.

Trench Over-Excavation: Where the Contract Documents indicate that trenches shall be over- excavated, they shall be excavated to the depth shown, and then backfilled to the grade of the bottom of the pipe.

Excavation in Poor Soil: If excessively wet, soft, spongy, unstable, or otherwise unsuitable material, as determined by the Engineer, is encountered at the bottom of the excavationor the surface upon which the pipe bedding material is to be placed including the vertical sides of a specified pipe trench, the unsuitable material shall be removed to a depth as required by the Engineer, disposed of, and replaced with approved fill or bedding material. Removal and replacement of material so ordered shall be paid for by the City as "Extra Work" unless provided in the schedule of prices. The Contractor shall maintainadequatedewatering procedures to ensure that an otherwise stable foundation will not be rendered unfit due to accumulation or movement of water in the excavation. If the necessity for such additional excavation and material has been occasioned by an act or failure to act on the part of the Contractor, the Contractor shall bear the full expense of the additional excavation and backfill to the required depth.

F. Where pipelines are to be installed in embankment or structure fills, the fill shall be constructed to a level at least one foot above the top of the pipe before the trench is excavated.

G. Obtain the Engineer’s approval before beginning excavation. Complete clearing and grubbing prior to the start of trenching. Do not permit excavated materials to cover SECTION 02200

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brush or trees prior to disposal.

3.05 OVER-EXCAVATION NOT ORDERED, SPECIFIED, OR SHOWN
Any over-excavation by the Contractor carried below the grade not ordered, specified, or shown, shall be backfilled to the required grade with the specified material and compaction. Such work shall be performed by the Contractor at his own expense.

3.06 EXCAVATION IN VICINITY OF TREES
Except where trees are shown to be removed, trees shall be protected in place per the Article 8 “Protection of Trees” of the Special Provisions. The Contractor shall replace all trees that die that are shown on the Contract Documents as being protected in place.

3.07 DISPOSAL OF EXCESS EXCAVATED MATERIAL
A. The Contractor shall remove and legally dispose of all excess excavated material to a site selected by the Contractor and reviewed by the Engineer. All incurred expenses including soil handling, transportation and tipping fees, if applicable, shall be borne by the Contractor.

B. Unsuitable material shall be defined as material containing excessive amounts of organic matter, peat, blue clay, trash or debris; or as designated by the Engineer; or debris produced by clearing, grubbing, and demolition of existing structures, pavement, or pipe; or soil classified by test method ASTM D2486 as groups OL, CH, MH, OH or PT; or not meeting the grading or classification specified for the work.

C. Excess unsuitable and surplus materials shall be kept separated from materials of other Contractors working in the same area. All excavated soil shall be off-hauled immediately; no trench excavation material shall be stored on-site or used as trench backfill. It shall be the Contractor’s responsibility to dispose of trench excavations off-site in a safe and legal manner at a site approved in writing by the engineer prior to start of excavations.

Contractor shall be responsible for disposal of trench excavation material at Class II and III landfills or disposal sites as approved by the Engineer. Contractor shall be responsible for all necessary testing of excavated soils prior to disposal and its associated costs.

D. Refer to General Provisions Section 9.12 (a) and (i) for additional requirements of disposal of contaminated soils and groundwater.

3.08 PROTECTION OF SUBGRADE
A. After preparing the subgrade as specified, all traffic on the subgrade shall be avoided.

Should it be necessary to haul over the prepared subgrade, the Contractor shall drag and roll the traveled way as frequently as may be necessary to remove ruts, cuts, and breaks in the surface. All cuts, ruts, and breaks in the surface of the subgrade that are SECTION 02200

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not removed by the above operations shall be raked and hand tamped. All equipment used for transporting materials over the prepared subgrade shall be equipped with pneumatic tires.

B. Continued use of sections of prepared subgrade for hauling, so as to cut up or deform it from the true cross-section, will not be permitted. The Contractor shall protect the prepared subgrade from all traffic.

The Contractor will be required to plank the subgrade before hauling materials or equipment over it.

The subgrade shall be maintained in the finished condition until placement of the next succeeding feature.

The Engineer has the right to test the reworked subgrade and approve or disapprove the subgrade depending on its condition.

3.09 BACKFILL – GENERAL
A. Backfill consists of the preparation and placement of materials for structural foundations, pipeline bedding, backfill for excavations and fill for roadways and embankments. In public rights-of-way, the requirements of the local agency having jurisdiction shall take precedence over these Specifications.

Backfill shall not be dropped directly upon any structure or pipe. Backfill shall not be placed around or upon any structure until the concrete has attained specified strength to withstand the loads imposed.

Material used in the work shall be uniform and shall contain no trash, wood, vegetation, sludge, peat and no rocks or clods larger than the size allowed by the Contract Documents. No material greater than 4 inches in any dimension shall be placed within 1 foot of any pipe, manhole or structure. Excavated material and material from borrow sites may be used where they meet the requirementsof the Contract Documents.

Blending or other processing may be necessary before a material is acceptable to the Engineer. Borrow sites shown on the Plans shall be excavated within the limits indicated. All costs for testing, processing and transporting materials are included in the Contract price.

Except for drainrock materials being placed in over-excavated areas or trenches, backfill shall be placed after all water is removed from the excavation.

Where pipelines are installed on grades exceeding 4 percent, and where backfill materials are graded such that there is less than 10 percent passing a Number 4 sieve, soil cement trench plugs shall be provided at minimum intervals of 200 feet.

3.10 PLACING AND SPREADING OF BACKFILL MATERIALS
SECTION 02200

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A. Backfill materials shall be carefully placed, leveled and compacted in horizontal layers of the depth specified in the Contract Documents. When compaction is achieved using mechanical equipment the layers shall be evenly spread in loose lifts not exceeding 8 inches in thickness so that when compacted each layer shall not exceed 6 inches in thickness. Each layer of fill material shall cover the length and width of the area to be filled before the next layer of material is placed. The moisture content of the material shall be controlled and water shall be applied as necessary to achieve the specified compaction at optimum moisture content and for the prevention of dust nuisance. No fill or rock shall be placed on standing water in any excavation.

B. Fill under Structures: The fill under structures, including fill to replace unsuitable material removed below the specified excavation or unauthorized over-excavation, shall be constructed in horizontal layers of select material not to exceed 8 inches in depth, or if under footings, the heights of the walls or footings shall be increased, or space shall be refilled with concrete at the expense of the Contractor, as may be directed by the Engineer. Any fill material used shall be compacted to a minimum relative compaction as directed in the tabulation in Article 3.11.E of this specification section.

Where the underlying soil has been disturbed by any activity, such as clearing and grubbing, it shall be compacted to a minimum relative compaction as directed in the tabulation in Article 3.11.E of this specification section before placing any fill.

Structural Backfill: All backfill around structures shall be made with select material or imported sand compacted up to the street zone to the required percent of maximum dry density at optimum moisture content as determined by ASTM D 1557, depending upon the appropriate zone or location of fill in accordance with the requirements of the tabulation in Article 3.11.E Compaction Requirements of this specification section. Compaction shall be performed in horizontal layers not to exceed 8 inches in depth. No backfill shall be placed against concrete structures until the 28-day concrete strength has been reached as specified.

E. During spreading each layer shall be thoroughly mixed as necessary to promote uniformity of material in each layer. Pipe zone backfill materials shall be manually spread around the pipe so that when compacted the pipe zone backfill will provide uniform bearing and side support.

F. Where the backfill material moisture content is below the optimum moisture content, water shall be added before or during spreading until the proper moisture content is achieved.

G. Where the backfill material moisture content is too high to permit the specified degree of compaction, the material shall be dried until the moisture content is satisfactory, at or slightly above optimum moisture content.

3.11 COMPACTION OF FILL, BACKFILL, AND EMBANKMENT MATERIALS,

INCLUDING PIPELINE WORK
A. Each layer of fill shall be mechanically compacted using proper compaction equipment SECTION 02200

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(not rubber tire or wheel rolling) to the specified percentage of maximum dry density at optimum moisture content. Equipment that is consistently capable of achieving the required degree of compaction shall be used and each layer shall be compacted over its entire area while the material is at the required moisture content.

B. The backfill shall be placed in horizontal layers of the specified depths or of such depths approved by the Engineer and compatible with the compacting equipment being used and the backfill material being placed. In no case shall any layer exceed 8 inches in thickness during compaction efforts. Each layer shall be evenly spread, properly moistened, or dried as necessary and compacted to the specified relative compaction.

Any damage or displacement to pipes or structures as a result of the Contractor’s operation shall be repaired or replaced at the Contractor’s expense.

Flooding, ponding, or jetting shall not be used to densify any fill materials with the exception of holes remaining from the extraction of H-beams, plates and piles or otherwise approved by the Engineer.

Equipment weighing more than 10,000 pounds shall not be used closer to walls than a horizontal distance equal to the depth of the fill at that time, but not less than 5 feet. Hand operated power compaction equipment shall be used where use of heavier equipment is impractical or restricted due to weight limitations.

E. Compaction Requirements: The following compaction test requirements shall be in accordance with ASTM D 1557. Where agency or utility company requirements govern, the highest compaction standards shall apply.

Location or Use of Fill Percentage of Maximum Density
Pipe zone backfill of bedding material and over-excavated zones under bedding
90 Trench zone backfill material 95
95 95
95 85
95 95
95 Street zone backfill of compacted sub base and base material Street zone final backfill, not beneath paved areas or structures Street zone backfill of compacted aggregate base material Embankments, not beneath paved areas or structures
Embankments, beneath paved areas or structures
Backfill beneath structures, hydraulic structures
Backfill around structures, on reservoir or structure roof

3.12 SIDEWALK, PAVEMENT, AND CURB REMOVAL AND REPLACEMENT A. The Contractor shall sawcut all bituminous and concrete pavements with a pavement saw prior to excavating the trenches. Width and depth of the pavement cut shall be in accordance with Section 02500, Asphalt Concrete Paving. Haul pavement and concrete materials from the site. Do not use for trench backfill.

B. Asphalt and paving shall be replaced in conformance with Section 02500, Asphalt Concrete Paving for all other areas and the requirements of the local agencies having jurisdiction.

SECTION 02200

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3.13 TRENCH WIDTHS
Minimum and maximum trench widths in the pipe zone shall be as shown on the Contract Documents.

3.14 DEWATERING
A.

Not used.

Provide and maintain means and devices to remove and dispose of all water from any source entering the trench excavation during the time the trench is being prepared for the pipe laying, during the laying of the pipe, and until the backfill at the pipe zone has been completed. These provisions shall apply during day as well as night hours. Dispose of the water in a manner to prevent damage to adjacent property and in compliance with NPDES requirements. Do not drain trench water through the pipeline under construction. Do not allow groundwater to rise around the pipe until backfilling is completed.

C. The Contractor shall take all necessary precautions to prevent the pipe from floating due to water entering the trench from any source. The Contractor shall assume full responsibility for any damage due to floating and shall pay for and perform the work required to restore and replace the pipe to its specified condition and grade.

3.15 LOCATION OF EXCAVATED MATERIAL
During trench excavation, place the excavated material only within the working area and beyond a 1:1 plane drawn upward from the lower of the base of shoring or excavation. Do not obstruct any roadways or streets. Conform to federal, state, and local codes governing the safe loading of trenches with excavated material.

3.16 LENGTH OF OPEN TRENCH
Refer to Section 02200-3.04-B.

3.17 FOUNDATIONSTABILIZATION
A. After the required excavation has been completed, the Engineer will inspect the exposed subgrade to determine the need for any additional excavation. It is the intent that additional excavation is conducted in all areas within the influence of the pipeline where unacceptable materials exist at the exposed subgrade. Overexcavation shall include the removal of all such unacceptable material that exists directly beneath the pipeline to a width 24 inches greater than the pipe outside diameter and to the depth required. Backfill the trench to subgrade of pipe base with rock refill material for foundation stabilization. Place the foundation stabilization material over the full width of the trench and compact in layers not exceeding 6 inches deep to the required grade.

B. Rock refill used by the Contractor for his convenience will not receive any additional payment.

SECTION 02200

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3.18 CONCRETE FOR BELOW GROUND INSTALLATION
The Contractor shall encase pipe with concrete to the line and dimensions indicated or place concrete between the undisturbed ground and the pipe or fittings to be restrained or supported. Quantity or bearing area of the concrete against the undisturbed ground shall be as shown on the Standard Drawings, Plans, or as directed by the City. Provide temporary support on the pipe, fittings, or valves until the concrete has obtained a 2-day cure. Place concrete such that the pipe joints, fittings, or valves are accessible for repairs. Vibrate the concrete during placement to eliminate honeycombing. Backfilling of the trench adjacent to the concrete will not be allowed until at least 3 days after placement or until the hydration process has produced a concrete that is hard enough to be self-supporting. Allow concrete to cure for at least 7 days prior to subjecting the concrete to pipeline pressure.

3.19 TRENCHBACKFILLING
A.

Place the specified thickness of pipe bedding material over the full width of trench.

Grade the top of the pipe bedding ahead of the pipe laying to provide firm, uniform support along the full length of pipe.

After pipe has been laid, place pipe zone material simultaneously on both sides of the pipe, keeping the level of backfill the same on each side. Carefully place the material around the pipe so that the pipe barrel is completely supported to 45 degrees each side of the pipe invert and so that no voids or uncompacted areas are left beneath the pipe.

Use particular care in placing material on the underside of the pipe to prevent lateral movement during subsequent backfilling.

Compact material placed within 24 inches of the outer surface of the pipe by hand tamping only. Do not use any axle-driven or tractor-drawn compaction equipment until 3 feet of fill has been placed over the top of pipe.

Push the backfill material carefully onto the backfill previously placed in the pipe zone.

Do not permit free fall of the material until at least 2 feet of cover is provided over the top of the pipe. Do not drop sharp, heavy pieces of material directly onto the pipe or the tamped material around the pipe.

Backfill of trench above the pipe zone shall not proceed until the required compaction in the pipe zone has been verified and accepted by the Engineer.

When backfilling around existing utilities, for pipelines sizes 6-inch through 42-inch the following materials may be used in each zone unless noted otherwise:

Zone Allowable Material
Refer to Section 02500, Asphalt
Concrete PavingPavement
Street Sand Cement Slurry
Imported Sand
SECTION 02200

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Native Materials meeting the
requirements of this Section
Within pipe zone, Class II aggregate
baseTrench
Sand Cement Slurry
Imported Sand
Native Earth Backfill meeting the
requirements of this Section
Trench stabilization of trench bottom
meeting the requirements of this Section
Within pipe zone, Class 1 bedding
Geotextile materialPipe
Pipe Bedding Within pipe zone, Class 1 bedding
G. All backfill within 24 inches of a valve or manway shall be imported sand.

3.20 BACKFILLCOMPACTION
A.

Compact backfill to the specified relative compaction. Compact by using mechanical compaction or hand tamping. Do not use high impact hammer-type equipment. Do not use plate compaction equipment on hydraulic excavators.

Compaction by jetting is generally not allowed for trench zone, but may be allowed for pipe and bedding zones in specific instances in areas approved by the City. Only importedsand materials backfilled in areas where foundation material is suitable will be allowed to be jetted.

Backfill by wet or dry jetting is explicitly not allowed.

On slopes too steep and trenches with inadequate drainage to consolidate backfill effectively, as determined by the Owner, the backfill shall be compacted by mechanical means.

E. Do not use any axle-driven or tractor-drawn compaction equipment within 5 feet of building walls, foundations, and other structures.

3.21 TESTING FOR COMPACTION
A. Tests specified below shall be performed by an engineer approved certified soil testing lab during the progress of the work to determine compliance with the compaction requirements specified herein, and the Contractor shall cooperate on the making of such tests by providing the labor and equipment necessary to obtain said tests at the required depth and allowing a reasonable time therefor.

B. Additional testing by the City may be performed for verification that contract requirements are being met and is not for Contractor's quality control. T h e SECTION 02200

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Contractor is responsible for adequacy of all backfill materials meeting contract requirements.

1. Determine the density of soil in place by the sand cone method, ASTM D1556 or by nuclear methods, ASTM D2922 and ASTM D3017.

2. 3.

Determine laboratory moisture- density relations of soils by ASTM D1557.

Determine the relative density of cohesionless soils by ASTM D4253 and ASTM D4254.

4. Sample backfill materials by ASTM D75.

C. The number of tests (depth and intervals) shall comply with the requirements of the pertinent permit. If there is no permit, or if the permit does not specify, the following shall be used.

1. For the pipe bedding zone, pipe zone, trench zone, and street zone, collectively 1 test for every 4-feet or fraction thereof of depth for every 250 feet of trench length. Backfill depth is from the bottom of the trench to the bottom of the pavement zone.

2. 3.

For the pavement zone (aggregate base), 1 test for every 500 feet of trench length.

For pit type excavations, at least 1 test within the pipe bedding shall be taken.

In addition, at least 1 test for every 5 vertical feet shall be taken.

E.
"Relative compaction" is the ratio, expressed as a percentage of the in place dry density to the laboratory maximum dry density.

Any test falling below the specified relative compaction shall be deemed not to comply with the specifications. The area should be reworked and/or rerolled until all tests in the area meet the specified relative compaction.

F. Where compaction tests indicate a failure to meet the specified compaction, the Contractor shall take additional tests every 50 feet in each direction until the extent of the failing area is identified. Rework the entire area between locations that have passed the tests until the specified compaction has been achieved. The Contractor shall pay the actual cost of all soil retests.

G. The Contractor shall submit one or several procedures for the placement of backfill to achieve the required compaction. A test section shall be selected at the beginning of the project to experiment with proposed compaction procedures, using the equipment the Contractor plans to use on the project. Based on the results of the test section, one of the procedures may be used on the project. The procedures shall define maximum lift thickness and number of passes of the compaction equipment.

H. Periodic monitoring: refer to General Provisions Sections 4.22 and 6, for testing SECTION 02200

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responsibilities.

3.22 DISPOSAL OF EXCESS MATERIAL
Excess site excavated or wasted material shall be disposed of offsite on a timely basis by the Contractor at his expense. No prearranged disposal site or related permits have been determined or secured by the City.

3.23 PERMITS
Refer to General Provisions Section 4 and Special Provisions Sections 11 “Caltrans Encroachment Permit”, for related permit information.

3.24 DIGALERT
The Contractor shall contact DigAlert (811) a minimum of three (3) days prior to any excavation.

3.25 OTHERAGREEMENTS
The Contractor shall obtain all required agreements with owners of utilities within 24-inches of this work in compliance with California law.

3.26 HARD ROCK EXCAVATION
Refer to Article 30 “Geotechnical Report and CCTV Video” of the Special Provisions.

3.27 NATURALLY OCCURING ASBESTOS
Refer to Article 30 “Geotechnical Report and CCTV Video” of the Special Provisions. **END OF SECTION**
SECTION 02200

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SECTION 02350

EXCAVATION SUPPORT SHORING AND BRACING
PART 1 - GENERAL

1.01 SUMMARY
A. This Section includes design and construction parameters for the Contractor-designed temporary shoring as necessary for trenches or manhole structures.

B. Shoring refers to providing all components of the excavation support system, including, but not limited to, bracing, steel soldier piles or sheet piles, struts, wales, or any other support including internal bracing, where applicable. Use other methods of support only when approved by the Engineer. Shoring shall be designed, provided, maintained, and where applicable, removed by the Contractor, in accordance with this Section and the Contract Documents.

C. As required by Section 6705 of the California Labor Code and in addition thereto, whenever work under the contract involves the excavation of any trench or trenches five (5) feet or more in depth, including temporary construction pits and manhole excavations, the Contractor shall submit to the Engineer a detailed plan showing the design of shoring, bracing, sloping, or other provisions to be made for worker protection from the hazard of caving ground during the excavation of such trench or trenches. If such plans vary from the shoring system standards established by the Construction Safety Orders of the Division of Industrial Safety, in Title 8, Subchapter 4, Article 6, California Code of Regulations, the plans shall be prepared and signed by a registered civil or structural engineer employed by the Contractor.

Shoring system plans for trenches or manhole structures in excess of five (5) feet or more in depth shall be prepared and signed by a civil or structural engineer, registered in California and employed by the Contractor. All costs therefore shall be included in the bid price named in the contract for completion of the work as set forth in the Contract Documents.

Nothing in this Section shall be deemed to allow the use of a shoring, sloping or other protective system less effective than that required by the Construction Safety Orders.

Nothing in this Section shall be construed to impose tort liability on the City, Design Consultant, or any of their officers, agents, representatives, or employees.

F. Horizontal strutting below the barrel of a pipe and the use of pipe as support are not acceptable.

G. The sheeting, shoring, and bracing system shall be designed and constructed to meet all of the following minimum performance requirements:

SECTION 02350

EXCAVATION SUPPORT SHORING AND BRACING

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1. 2.

3. 4.

Protect personnel that enter excavations.

Assure worker safety and optimal conditions for pipe installation.

Protect adjacent existing utilities, pipelines, pavements, and structures.

Installation of support system shall not cause settlement or heave of the ground surface nor produce construction vibrations that could damage adjacent utilities or structures.

5. Prevent lateral movement of excavation walls and associated loss of adjacent ground support and adjacent ground lateral shifting/settlement.

6. 7.

Prevent heaving of the excavation bottom.

When removal is permitted, allow for the removal of support system in a manner that does not damage the pipeline, cause settlement or heave of the ground surface, nor produce construction vibrations that cause damage to adjacent utilities or structures.

H. Related Sections:

1. 2.

3. SECTION 02200, EARTHWORK
SECTION 02701, PRECAST CONCRETE STRUCTURES
SECTION 15050, GENERAL PIPING

1.02 REFERENCE
A.

City of San Carlos: Standard Specifications and Details (latest edition).

CAL/OSHA and OSHA
Title 8, Construction Safety Orders, Section 15041.1, “Requirements for Protective Systems, Appendix A

1.03 SYSTEM DESCRIPTION
A. Design Requirements:

1. Design and construct the shoring system in accordance with all applicable codes, and in accordance with the specific requirements described herein.

2. At all times furnish, install, and maintain sufficient shoring and bracing in trenches and pits to insure safety of the workmen and to protect and facilitate the work. System shall be designed and constructed in accordance with the Contract Documents. The Contractor shall:
a. Design each member or support element to support the maximum lateral earth pressures, hydrostatic pressures, lateral loads from traffic, construction equipment, and spoils loads that can occur during construction with appropriate safety factors.

SECTION 02350

EXCAVATION SUPPORT SHORING AND BRACING

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b. Design the support system to prevent raveling, running, and flowing of excavation walls and associated loss of adjacent ground and adjacent ground surface settlement or existing trench material at utility crossings. Design the support system to retain non-cohesive granular soils subject to raveling, flowing, and/or running upon vibration from construction equipment including compaction of backfill. c.
d.

Prevent heave and/or piping (boiling) of the excavation bottom.

Design excavation support systems in accordance with all CAL/OSHA, and OSHA, requirements.
e. Take into account all surcharge loadings. Surcharge loadings can be due to such items as material or soil stockpiles, sloping ground adjacent to shoring, and adjacent building foundations. Contractor shall assure that his assumed conditions and loadings are not exceeded in the field during construction.
f. Design shoring to withstand any construction loading. g. The design of shoring shall conform to accepted engineering practice in this field. The Engineer’s approval of the Contractor’s plans and methods of construction does not relieve the Contractor of his responsibility for the adequacy of this support.

B. Performance Criteria:

1. 2.

The Contractor shall be solely responsible for, and bear the sole burden of cost for, any and all damages resulting from improper shoring or failure to shore.

The safety of workmen, the protection of adjacent structures, property and utilities, and the installation of adequate supports for all excavations shall be the sole responsibility of the Contractor.

3. The design, planning, installation, (and removal, if required) of all shoring shall be accomplished in such a manner as to maintain stability of the required excavation and to prevent movement of soil and rock that may cause damage to adjacent shoring systems, structures and utilities, damage or delay the work, or endanger life and health.

1.04 SUBMITTALS
A. Shop Drawings:

1. Submit plans for shoring to the Engineer for review at least ten (10) working days prior to commencement of work. No excavations shall be started until the Engineer has reviewed the Contractor’s shoring design. The shoring and bracing system plans shall be in accordance with the Contract Documents and to permit the Engineer to review the overall completeness and effectiveness of the proposed system. Review of the shoring and bracing plans by the Engineer SECTION 02350

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in no way relieves the Contractor of complete responsibility for providing effective and safe shoring and bracing of the construction area and/or pipeline under construction. Shoring and bracing submittals shall demonstrate coordination with the dewatering method and submittal.

2. Include:
a. Design assumptions, analyses, calculations, and information on Contractor’s proposed method of installation (and removal, if required) of all shoring. The design and calculations shall be performed by, sealed by and signed by a professional engineer registered in the State of California and experienced in the design of earth retaining structures. b.
c.

The maximum design load to be carried by the various members of the support system.

Detailed excavation support drawings, showing all pertinent dimensions, spacings, and relationships among the components of the shoring, as well as construction sequence and scheduling. d.
e.

The method of bracing.

The full excavation depth and depth(s) below the main excavation to which the support system will be installed.
f. Detailed sequence of construction and bracing removal and backfilling. g. Detailed drawings and descriptions of the method to be used by the Contractor to monitor shoring and adjacent ground/structure movements.
h.
i.

Demonstrate coordination with interior (sump pumps) and exterior (dewatering wells) dewatering methods and dewatering submittal.

Calculations demonstrating that shoring has been designed for hydrostatic pressures if external dewatering wells are not planned to fully draw down the groundwater level behind the shoring to a minimum of 3 feet below the excavation bottom.

Quality Control Submittals:

Submit proof of experience and qualifications required in this Section.

Permits:

Contractor shall have up to date CAL/OSHA annual/construction activity permit for Trench and Excavation construction.

1.05 QUALITY ASSURANCE
A. Work of this Section shall be performed by an individual or firm of established reputation (or, if newly organized, whose personnel have previously established a reputation in the same field) for at least five (5) years, which is regularly engaged in, and which maintains a regular force of workmen skilled in design, installation and maintenance of shoring.

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B. All welding shall be done by skilled welders, welding operators, and tackers who have had adequate experience in the type of materials to be used. Welders shall be qualified under the provisions of ANSI/AWS D1.1 by an independent local approved testing agency not more than six (6) months prior to commencing work; unless having been continuously employed in similar welding jobs since last certification. Machines and electrodes similar to those used in the work shall be used in qualification tests. The Contractor shall furnish all material and bear the expense of qualifying welders.

1.06 PROJECT CONDITIONS
A. Existing Ground and Groundwater Conditions:

Contractor shall refer to reference information included in the Geotechnical Investigation Report regarding the geotechnical conditions at the sites, see Section 02200-1.4.

B. Existing Utilities:

Contract Drawings do not show all utilities. Contractor shall notify the Underground Service Alert (USA) and field-check locations of utilities prior to commencing work.

The Contractor shall protect any overhead wires and any sewer, water, gas, electric or other pipelines or conduits uncovered during work from damage caused by the work of this contract.

1. Where utilities are anticipated or encountered unexpectedly, excavate by hand or other excavation methods acceptable to the utility owner.

2. If existing utilities identified interfere with Contractor’s proposed method of support, any required modification or relocation shall be performed at no additional cost to the City.

PART 2 - PRODUCTS
To be selected by the Contractor within the guidelines described in this Section.

PART 3 - EXECUTION

3.01 EXAMINATION
In accordance with Title 8, Construction Safety Orders, Section 15041.1, “Requirements for Protective Systems, Appendix A”, “Each soil and rock deposit shall be classified by a competent person as Stable Rock, Type A, Type B, or Type C.” A ‘Competent Person’ is one who is capable of identifying existing and predictable hazards in the surroundings, or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them.” A.

Verify Surface Conditions and utility locations. Protect utilities and improvements, as called for in the Contract Documents, or required by the Utility Company(s).

Verify field measurements indicated on Contract Documents.

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C. Verify layout of work before beginning installation.

3.02 EXCAVATION
A. Protect or repair utilities damaged by operations of this Section. Protect adjacent structures and property from damage and disfiguration.

B. Provide necessary groundwater control and drainage for trenches and manhole structures in accordance with the Contract Documents. Contractor should expect that dewatering will be required to allow placement of shoring in soil under “dry” conditions and to prevent flowing, raveling, or running of soil, prior to shoring placement.

C. The methods of constructing the temporary shoring are at the option of the Contractor and subject to review by the Engineer. Excavations shall be made to the lines, grade, and dimensions shown on the Contractor’s Shop Drawings. If the excavation is found to be deviating from the true lines and grade, the Contractor shall immediately make the necessary changes in operation to bring the operation back to the correct position.

Any excess deviation beyond that specified herein shall be remedied by the Contractor at their own expense.

All materials encountered shall be regarded as unclassified and shall be excavated, regardless of the nature thereof, and all excavated material must be removed and disposed of as described in the Contract Documents.

Complete excavation in such manner as to provide adequate support at all times to adjacent conduits, structures, or roads and so as to offer no hazard to train, truck or automobile operations. Bracing and shoring shall be substantial and safe, and all work shall be done in full conformity and subject to the inspection of all affected parties. If and when required and to the degree necessary, the Contractor shall provide additional support as may be necessary at no additional cost.

F. Take every precaution to prevent the entry of water, mud and foreign matter into the excavation at all times. It is the intention of these Specifications that all construction work described herein shall be carried out under dry conditions. The Contractor shall promptly and continuously control water inflow and dispose of all water from any source that may accumulate in the excavation. This shall include all necessary pumping, bailing, draining and sedimentation prior to discharge.

Any and all excess excavation or over-excavation performed by the Contractor for any purpose or reason, except as may be ordered in writing by the City, shall be at the expense of the Contractor. Any damage done to the work by the Contractor’s operations shall be repaired by and at the expense of the Contractor and in a manner approved by the Engineer.

Excavate only as much as can safely stand unsupported prior to installing shoring, but in no case more than 4 feet shall be left unsupported at any time. Install lagging immediately after excavation.
**END OF SECTION**
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SECTION 02500

ASPHALT CONCRETE PAVING
PART 1 - GENERAL

1.01 SUMMARY
A. This Section addresses the installation of asphalt concrete for roadways in which pipeline construction is performed, as required in these Contract Documents. Other roadway or pavement areas requiring asphalt concrete as indicated on the Contract Drawings or to be determined later, shall also be governed by these specifications.

B. Related Sections:

1. SECTION 02200, EARTHWORK

1.02 REFERENCES
A.

City of San Carlos:

1. Standard Specifications and Details (latest edition).

American Society for Testing and Materials (ASTM):

1. 2.

ASTM C136 - Sieve Analysis of Fine and Coarse Aggregates.

ASTM D1557 - Moisture-Density Relations of Soils and Soil-Aggregate Mixtures Using 10-lb (4.54-kg) Rammer and 18-in. (457-mm) Drop.

3. 4.

ASTM D2041 – Standard Test Method for Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures.

ASTM D2172 - Quantitative Extraction of Bitumen from Bituminous Paving Mixtures.

C. State of California, Department of Transportation (Caltrans), latest edition unless otherwise noted:

1. California Test Method 304 – Method of Preparation of HMA for Test Specimens

2. 3.

California Test Method 339A – Determination of Distributor Spread Rate.

State Standard Specifications Sections 25, 26, 39, 92, 93 and 94 (2006 edition)

1.03 SUBMITTALS
A. Submit the following in accordance with the Contract Documents.

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1. Job-mix formula for each type of asphaltic concrete fourteen (14) days before asphalt concrete placement. Ensure formula is within the specified design range.

2. Copies of weighmaster's certificates or certified delivery tickets for each truck load of material.

B. Certificates:

1. 2.

3. 4.

5. Aggregates for base course and asphalt concrete.

Asphalt cement.

Liquid asphalt.

Asphaltic emulsion.

Paint.

1.04 QUALITY ASSURANCE
Materials and workmanship specified herein with the referenced State Standard Specifications shall be in accordance with the referenced articles, sections and paragraphs of the Standard, except that contractual and payment provisions do not apply.

1.05 TESTING
Testing will be conducted by the Contractor to determine compliance with the specified degree of compaction and moisture content.

1.06 ENVIRONMENTAL CONDITIONS
Install hot mix asphaltic concrete in accordance with City of San Carlos Standard Details and Standard Specifications.

1.07 EQUIPMENT
Mixing Plant and Construction Equipment shall comply with Section 39 of State Standard Specifications.

PART 2 - PRODUCTS

2.01 MATERIALS
A. Aggregates:

1. Base Course: In accordance with Section 26 of State Standard Specifications, Class 2, 3/4-inch maximum size gradation.

2. Asphalt Concrete: In accordance with Section 39 of the State Standard Specifications, Type A, 3/4-inch maximum, coarse gradation.

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3. Asphalt Concrete Surface Course: In accordance with Section 39 of the State Standard Specifications, Type A, 1/2-inch maximum, coarse gradation B. Asphalt Materials:

1. 2.

3. 4.

Asphalt Cement: In accordance with Section 92 of State Standard Specifications, PG 64-10.

Liquid Asphalt: In accordance with Section 93 of State Standard Specifications, Grade SC-70.

Asphaltic Emulsion: In accordance with Section 94 of State Standard Specifications, Grade SS-1h.

Asphalt Concrete Surface Course: Asphalt concrete shall be hot mix and conform to Section 39-2.02 of State Standard Specifications. Asphalt Binder shall be viscosity graded asphalt in accordance with Section 92 of the State Standard Specifications.
a. All streets:
1)
2)
3)
Aggregate: Type A, 1/2-inch maximum, coarse gradation.

Asphalt Binder: PG 64-10.

Asphalt binder mixed with aggregate shall be such that the air void content of the resulting asphalt concrete shall be not less than 3 percent or more than 5 percent.
4) Stabilometer value as determined by California Test Method No. 366 shall be 38 minimum.

PART 3 - EXECUTION

3.01 PREPARATION
A. Subgrade:

1. 2.

Requirements for subgrade are specified in Section 02200, Earthwork.

Prior to construction of base course, clean previously constructed subgrade or subbase of foreign substances.

B. Asphalt Concrete Preparation:

1. Uniformly mix mineral aggregate with bituminous material in a central plant in accordance with Section 39 of State Standard Specifications.

2. The percentage of asphalt cement binder shall be between five and seven percent.

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3.02 INSTALLATION
A. The Contractor shall place final asphalt concrete following completion of the Work at each project site and with approval from the City.

B. Base and Subbase Course Installation:

1. 2.

3. Place aggregate base in accordance with requirements of Sections 25 and 26 of State Standard Specifications.

Grade and compact in 3-inch layers to at least ninety-five percent (95%) of maximum density, ASTM D 1557 Method D.

Maintain base course in proper condition until asphaltic concrete is in place, including drainage, rolling, shaping, and watering.

4. 5.

Maintain sufficient moisture at the surface to prevent a dusty condition by light sprinkling with water.

Recondition, reshape, and recompact areas of completed base course damaged by freezing in accordance with the specified requirements.

C. Prime Coat:

1. 2.

3. Prior to application of asphaltic concrete, apply a prime coat.

Apply by pressure distributors.

Allow sufficient time before placing asphalt concrete to permit prime coat to penetrate base.
a. Liquid Asphalt Application: Apply liquid asphalt on prepared compacted base in accordance with Section 39 of State Standard Specifications.
b. Asphalt Emulsion Application: Apply emulsion at a rate of 0.10 gallon per square yard.

Tack Coat - Apply asphaltic emulsion to the existing pavement surfaces in accordance with Section 39-4 of State Standard Specifications.

Asphalt Concrete Installation:

1. 2.

Placing - Deliver bituminous mixtures to the roadbed at temperatures specified in Section 39 of State Standard Specifications. Spread in accordance with Section 39-6 of State Standard Specifications.

Compaction - Initial or breakdown rolling and the final rolling of the uppermost layer of the asphalt concrete shall be in accordance with Section 39 of State Standard Specifications. Compaction by vehicular traffic shall not be permitted.

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3. Joining Pavement - Carefully make joints between old and new pavements and of successive days' work in such manner as to ensure a continuous bond between old and new sections of the course. Expose and clean edges of existing pavement. Cut edge to straight, vertical surfaces. Paint joints with a uniform coat of tack coat before the fresh mixture is placed. Prepare joints in the new pavement in accordance with Section 39-6 of State Standard Specifications.

3.03 FIELD QUALITY CONTROL
All field quality control tests shall be performed by the Contractor. Testing frequency may differ from condition listed below. Where finished work does not meet specified requirements and follow up testing is required, Contractor will be responsible for all follow up testing costs for that item.

Base Course Finish Surface:

1. 2.

Surface tolerance shall conform to Section 26 of State Standard Specifications.

When base course is constructed in more than one layer, specified smoothness requirements apply only to top surface.

Pavement Smoothness:

1. Test wearing course in accordance with Section 39-6 of State Standard Specifications.

2. Make one test for each 300 square yards of pavement.

Pavement Thickness:

1. 2.

Pavement thickness shall be as shown on the Contract Documents.

Where existing pavement thickness is greater than shown in the Contract Documents, Contractor shall match existing pavement thickness as directed by the Engineer.

3. 4.

One test for each 300 square yards of completed pavement will be taken.

Contractor shall replace pavement where samples are removed.

D. Gradation:

1. Base Course Gradation
a.
b.

Base course gradation tests will be completed in accordance with ASTM C 136.

One test for each 100 tons of material will be taken.

2. Asphalt Concrete Gradation:
a. Asphalt concrete gradation tests will be completed in accordance with ASTM C136.

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b. One test for each 50 tons of material will be taken.

E. Base Course Density:

1. ASTM D 1557, Method D. In place density tests will be performed in accordance with ASTM D 1556.

2. 3.

One maximum density test for each gradation will be taken.

One set of two tests each for in place density for each three hundred (300) square yards of surface area will be taken.

F. Asphalt Content of Asphalt Concrete:

1. Percent asphalt content by extraction will be measured in accordance with ASTM D 2172, Method A.

2. One test for each fifty (50) tons of material will be taken.

3.04 PROTECTION OF PAVEMENT
A. After final rolling, the Contractor shall not permit vehicular traffic on the pavement until pavement has cooled and hardened and in no case less than six (6) hours.

B. Additional requirements are as shown in the Contract Documents.

3.05 TEMPORARY PAVEMENT
A. Temporary asphalt concrete shall be provided on all backfilled trenches. Use of cutback and/or overnight plating of backfilled trenches is not acceptable. Only HMA may be used for asphalt paving at the conclusion of each day for backfilled trenches.

Temporary pavement restoration shall be as shown on the Contract Documents.

Temporary asphalt concrete section shall be as shown on the Contract Documents.

Before the trenching area is opened for traffic, all excess dirt, rock and debris shall be removed and the street surface shall be swept clean.

Temporary surfacing shall be maintained. At no time shall there be any mudholes.

The surface shall not settle below one inch (1") or be raised more than one inch (1") from the existing pavement grade.
**END OF SECTION**
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SECTION 02510

SLURRY SEAL PAVEMENT SURFACING
PART 1 - GENERAL

1.01 SUMMARY
Work required under this section consists of furnishing all labor, materials, tools, and equipment incidental to road restoration.

1.02 SUBMITTALS
The Contractor shall submit manufacturer data including catalog cuts, drawings and samples, as appropriate, and letter(s) of compliance as required by Special Provisions item number 31.

PART 2 MATERIALS

2.01 SLURRY SEAL
Slurry seal shall be Type II conforming Section 37 - Bituminous Seals, of the latest requirements of Caltrans Standard Specifications.

PART 3 - EXECUTION

3.01 SLURRY SEAL
A. Slurry seal shall be placed in accordance with Section 37 - Bituminous Seals, of the latest Caltrans Standard Specifications. Slurry seal shall fully cure prior of traffic striping/marking placement.

B. Temporary traffic delineators (floppies, etc.) shall be removed prior to slurry seal placement. **END OF SECTION**
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SECTION 02641

SANITARY SEWER REHABILITATION USING CURED-IN-PLACE PIPE (CIPP) METHOD

1.01 SUMMARY
1)
2)
Section Includes: Rehabilitation of pipe by the cured-in-place pipe (CIPP) method.

System Description: Rehabilitate existing pipes by inserting a resin-impregnated flexible tube through the host pipe, inflating it to the inside diameter of the host pipe using low-head hydrostatic pressure, and curing the tube using heated water or steam. 3) This section provides general guidelines. Nothing contained herein shall relieve the Contractor from completing the CIPP pipe rehabilitation in the most feasible, efficient, highest quality, and safe manner, using required materials to the lines and grades of the sewers to be rehabilitated and to the requirements of this specification. 4)
5)
Contractor shall supply all labor, materials, equipment and apparatus not specifically mentioned herewith or noted on the Plans, but which are incidental and necessary to complete the specified work.

Related Sections

1. SECTION 01720, SEWER OUTAGE NOTIFICATIONS
SECTION 02145, SEWAGE FLOW CONTROL2.

4. SECTION 02735, SANITARY SEWER SYSTEM TESTING AND

CLEANING

5. 6.

7. SECTION 02736, CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION

OF SANITARY SEWER SYSTEM
SECTION 02739, BUILDING SEWER (LATERAL) CONSTRUCTION

AND REINSTATEMENT
Article 15, Special Provisions - Water

1.02 REFERENCES
A.

ASTM D790 - Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials ASTM D2122 - Standard Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
ASTM F1216 - Standard Practice for Rehabilitation of Existing Pipelines and Conduits by the Inversion and Curing of a Resin-Impregnated Tube SECTION 02641

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D. ASTM F1743 - Standard Practice for Rehabilitation of Existing Pipelines and Conduits by Pulled-in-Place Installation of Cured-in-Place Thermosetting Resin Pipe (CIPP)

1.03 EXPERIENCE REQUIREMENTS
A. Required experience:

1. CIPP Manufacturer: Minimum of 25,000 linear feet of CIPP installed in the U.S, including non-styrene resins.

2. Installation Contractor:
a. Minimum of 5 years of active experience on commercial installation of CIPP, including use of non-styrene resins.
b. Minimum of three (3) successfully completed projects totaling at least 30,000 linear feet of CIPP installed in the U.S. Minimum of 2,000 linear feet of CIPP installation with non-styrene resin. c.
d.

Each of the referenced lining projects shall have been in service in the owner’s system for at least one year.

Licensed by manufacturer.

3. Field Superintendent: Superintendent assigned to the project shall be present in the field full time and shall supervise all pipe rehabilitation operations.

Superintendent shall have cured-in-place pipe supervisory field experience on a minimum of three successfully completed projects. Qualifying experience for the three reference projects submitted shall include:
a. Length: Minimum of at least three (3) successfully completed projects totaling at least 5,000 linear feet of CIPP installation. b. Sewage Flow Control: At least one year of sewage flow control supervisory field experience.

4. 5.

6. Installation Crew: At least three persons from the CIPP installation crew shall have a minimum of two years of CIPP experience, including use of non-styrene resin, have at least one year of tenure with bidding Contractor, and be on the project site at all times.

Curing Technician: Provide the name and information for the curing technician who will perform the actual work. All curing technicians shall be certified and approved as operators by the rehabilitation system manufacturer or an independent testing agency.

The final decision to accept or reject the product, manufacturer, and/or installer lies solely with the Engineer. The named Manufacturer, Field Superintendent, CIPP Installer, and Curing Technician must be utilized to perform the work under this project, unless changes are specifically authorized by the Engineer in writing.

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1.04 SUBMITTALS
A. The Contractor shall at minimum submit the following:

1. Experience: Submit documentation demonstrating compliance with specified experience requirements as detailed in Article 1.03 of this technical specification section.

2. 3.

4. List of field measurements verifying length and diameter of each pipe segment (including maximum and minimum dimensions).

Unless otherwise noted in this Section, CIPP submittals shall be submitted at least 30 calendar days before any work may be performed.

Product Data:
a.
b.

Information on CIPP materials, including lining material and resins.

CIPP materials submittal shall be approved prior to ordering liners

5. Construction Details:
a. CIPP Manufacturer’s recommended storage procedures, resin application, curing process details and cure schedules (including heat up, hold and cool down cycles and temperature control for each diameter and CIPP thickness).
b.
c.

Methods, materials, equipment, and procedures used to trim and finish manhole walls.

Safety systems associated with the proposed heating equipment and boiler management operational safety systems for use with the cure process.
d.
e.

Methods, materials, equipment, and procedures employed to seal annular space between the CIPP and the host pipe at manholes.

Methods, materials, equipment, and procedures to seal lateral connections.

6. Engineering calculations for the design of the liner thickness:
a. Design calculations shall be checked and approved by a Registered Civil Engineer in the State of California. Liner design calculations shall be supported by field analysis, technical assumptions, requirements of these Specifications and ASTM F1216.
b. Calculations shall be submitted and reviewed prior to ordering liner.

7. 8.

During the curing process, keep logs, charts and/or graphs of the liner temperatures at the specified locations to ensure that proper temperatures and cure times have been achieved.

Certifications and Testing:

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a.
b.
c.

Certification from the CIPP manufacturer that the resin/catalyst and tube material complies with the required application meets the intended service condition and complies with the physical requirements.

Literature and background information on the independent third party testing laboratory proposed for testing the physical properties of the installed pipe.

Manufacturer’s certification that lining material is manufactured, sampled, tested and inspected in accordance with ASTM F1216 and F1743. Include the manufacturing date of the lining materials in the certification.
d. Verification of product conformance by third party testing for the chemical resistance and physical testing requirements along with a report of test results.

9. For each diameter and thickness to be installed on the project, provide volume of resin required per unit length (gal/foot or liters/meter) to fill the volume of air voids in the tube plus the additional allowance for polymerization shrinkage and to meet the finished liner strength requirements.

10. After each impregnation of a tube for an installation, submit a process record that verifies that the resin impregnation yield matches the required quantity for the diameters and thicknesses.

11. Written notification of any crew changes. Notification shall be a minimum of one week prior to date of actual change.

1.05 WARRANTY
A. Contractor shall provide a warranty to be in force and effect for a period of one year from the date of written final acceptance. The warranty shall require the repair or replacement of the liner due to failure resulting from faulty materials or installation as deemed necessary by the Engineer. All required work incidental or required as part of the repair or replacement shall be provided by the Contractor at no additional cost to the City.

PART 2 - PRODUCTS

2.01 GENERAL
A. Materials provided and process variables used in the CIPP installation process are the responsibility of the Contractor.

B. Materials, installation procedures and the final product shall equal or exceed the requirements of ASTM F1216, ASTM F1216 Appendix X1, and F1743, as applicable.

2.02 COMPONENT PROPERTIES
A. Liner Tube: One or more layers of flexible needle felt or an equivalent woven and/or non-woven material capable of carrying a non-styrene resin, withstanding installation SECTION 02641

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pressures and curing temperatures, compatible with the resin system used, and having markings to determine elongated length during liner installation.

B. Resin:

1. 2.

3. Compatibility with Application: Liquid thermosetting resin that is compatible with the CIPP rehabilitation process used and designed for a wastewater environment.

Type: Non-styrene vinyl ester or epoxy meeting the service conditions specified for the tube system and the applicable sections of ASTM F1216 and F1743.

Resin Characteristics: Sufficiently thixotropic to obtain non-draining characteristics when impregnated into the fiber fabric.

C. Catalyst: Compatible with the resin and other materials to be utilized in the rehabilitation process. Select quantity and type of catalyst based on the curing conditions and recommendations of the resin manufacturer.

2.03 FINISHED AND CURED LINER PROPERTIES
A. Design Parameters - The liner material and thickness shall be calculated and designed for use in gravity sanitary sewers and must be in strict conformance with all applicable sections of ASTM F1216, ASTM F1216 Appendix X1, F1743 and D5813.

B. The design shall be based on the following pipe conditions, service requirements and physical conditions:

1. Deterioration design parameter: Fully deteriorated host pipe based on the definitions contained in ASTM F1216..

2. Assume groundwater is at ground surface.

All pipes subject to soil load of 130 lb/cu.ft. and H-20 live load.

Ovality of host pipe is 2 percent.

3. 4.

5. 6.

7. Factor of safety (N) is 2.

Modulus of passive soil reaction is 1,000 psi.

External Buckling Design - Acceptable third party testing and verification of the design analysis techniques (ASTM F1216, Appendix X1).

8. A minimum service life of 50 years.

C. The liner shall be homogeneous throughout, white, uniform in color, free of cracks, holes, foreign materials, blisters, or deleterious faults. The physical properties of the cured liner shall meet the minimum chemical resistance requirements of ASTM F1216 SECTION 02641

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and F1743 and shall conform to the minimum structural standards listed in the following table:

Minimum Value
Structural Property ASTM
Standard
Non-styrene
Vinyl ester or
Epoxy Resin
As calculatedWall Thickness
Flexural Strength
D2122
D790 5,000 psi
Flexural Mod. of Elasticity (short-term) D790 300,000 psi Flexural Mod. Of Elasticity (long-term) D790 150,000 psi D. Liner Tube Sizing:

1. 2.

Outside diameter of the liner tube being inserted shall be properly sized to allow for expansion so that the CIPP liner can fit tightly against the host pipe.

Shall be properly sized to the length to be rehabilitated and be able to stretch to fit irregular pipe sections and negotiate bends and curves with the minimum tube length necessary to effectively span the designated run between manholes, unless otherwise specified.

3. 4.

Contractor shall verify the lengths of the pipelines to be rehabilitated in the field prior to impregnation of the tube with resin, to ensure that the tube will have sufficient length to extend the entire length of the run.

Contractor shall measure the inside diameter of the existing pipelines in the field so that the liner can be installed in a tight-fitted condition.

2.04. SEALING AT MANHOLES:

Liner ends shall be permanently sealed to the rehabilitated pipeline to prevent any infiltration between the CIPP and the host pipe.

Ends shall be sealed with a resin mixture that is recommended by the liner manufacturer.

Sealing shall be compatible with the liner/resin system, provide a watertight seal and be approved by the Engineer prior to start of construction. Hydraulic cements and quick-set cement products are not acceptable. Acceptable materials shall be an approved epoxy type product that will bond, not crack, dry up, slough off, or shrink in time, and provide a good transition in the manholes.

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PART 3 – EXECUTION

3.01 LINER PIPE STORAGE AND HANDLING
A.

Liner pipes shall be properly stored and handled to prevent damage in accordance with the manufacturer’s recommendations and as approved by the Engineer.

Damage includes, but is not limited to, gouging, abrasion, flattening, cutting, puncturing, or ultra-violet (UV) degradation.

All damaged materials and pipe rejected by the Engineer shall be promptly removed from the project site at no additional cost to the City and disposed of in accordance with current applicable regulations.

3.02 PREPARATORY WORK
A.

Provide temporary sewage flow control of the sanitary mains in accordance with Section 02145, Sewer Flow Control.

Thoroughly clean the host pipe in accordance with Section 02736, Closed Circuit Television Inspection of Sanitary Sewer System.

Diameter and Length Verification: Verify internal diameter and length of existing sewer pipe prior to sizing and ordering liner.

Preliminary CCTV Inspection of Sewer Lines: Perform internal CCTV inspection after cleaning of the sewer lines to document the condition of the host pipe, identify and locate any active service laterals, and verify the lines were cleaned in accordance with Section 02736, Closed Circuit Television Inspection of Sanitary Sewer System and the liner manufacturer’s requirements.

E. Point Repairs: Prior to wet-out contractor shall determine if point repairs are required for proper installation of liner as required by lining manufacturer. It shall be the Contractor’s responsibility to remove all debris, repair protruding laterals and control moderate infiltration at no additional cost to the City. Written notification shall be provided to the Engineer a minimum of three days prior to all repairs that require excavation, such as collapsed pipe, or specialized equipment to stop heavy infiltration.

The Engineer will provide written approval prior to all work that requires excavation or specialty equipment.

3.03 WET-OUT PROCEDURE
A. Contractor shall utilize the resin and catalyst in sufficient quantities to ensure complete impregnation of the liner and provide the properties specified in this Specification.

B. The liner tube shall be fully impregnated with resin by vacuum or other means prior to installation. The resin and catalyst systems that are compatible with the requirements of the method shall be used. The quantity of resin used for tube impregnation shall be sufficient to fill the volume of air voids in the tube with additional allowance for polymerization shrinkage and the loss of resin through cracks and irregularities in the original pipe wall. Unless otherwise specified to provide for excess resin migration, the SECTION 02641

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gap thickness of wet out equipment shall be sized to allow an excess of 5 to 10 percent resin to pass during impregnation.

C. If resin impregnation/wet-out is to take place off-site, provide the Engineer with 48 hours’ notice for each scheduled wet-out. The Engineer reserves the right to check, verify, or inspect all phases of production and testing of materials, from manufacturing, shipping, wet-out, installation, and cure, to finished product.

3.04 FINAL CLEANING AND INSPECTIONS
A. The existing host pipe shall be cleaned again after sewage has been bypassed and just prior to insertion of the liner.

B. A maximum of one hour may elapse between this final cleaning pass and the insertion of the liner.

After the cleaning is complete, a final camera pass shall be made to verify the cleanliness of the line.

Bypass pumping: in accordance with Section 02145, Sewer Flow Control, and shall exclude any sewage or other flow from entering the line during the inspection.

Pipe invert shall be cleared of any standing water and shall be continuously visible during the inspection.

Prior to insertion of the liner, the sewer main must be accepted as ‘clean’ as defined in Section 02736, Closed Circuit Television Inspection of Sanitary Sewer System, by the Engineer.

G. This final inspection does not need to be videotaped but the Engineer must be present in the TV truck during the inspection to verify the cleanliness of the line.

3.05 LINER INSTALLATION
A.

Install the liner tube through the existing manholes in accordance with the manufacturer’s recommendations and procedures. Protect manholes to withstand forces generated by equipment, water, or air pressures used while installing the liner tube.

Transport the impregnated liner tube to the site and store in such a manner that it will not be damaged, exposed to heat and/or direct sunlight, or result in any public safety hazard. Materials shall be subject to inspection and review prior to installation. The impregnated liner tube must be installed prior to exceeding the resin pot life or within two weeks whichever is less.

C. The installed pipe liner shall be in strict accordance with the liner manufacturer’s instructions and recommendations. The liner shall be inserted through an existing manhole or other access approved by the Engineer, by means of the installation process and the application of hydrostatic head, compressed air, or other means sufficient to SECTION 02641

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fully expand and extend the liner to the next designated manhole or termination point.

The liner shall be installed at a rate not to exceed that needed to remove water from the sewer during installation process.

D. Contractor shall abide by all requirements specified in Special Provisions Section 15 for water acquisition requirements.

3.06 CURING
A. The Contractor shall abide by all discharge requirements as specified in General Provisions Section 9.12 (a) and (i) and as required to meet the pollutant limits as required.

B. Heating Source and Distribution Equipment:

1. 2.

After liner placement is completed.

A suitable heat source and distribution equipment shall be provided to distribute or recirculate hot water or stream throughout the pipe.

3. The equipment shall be capable of delivering hot water or other heating methods throughout the section to uniformly raise the temperature above the temperature required to cure the resin.

4. 5.

This temperature shall be determined by the manufacturer based upon the resin/catalyst system employed.

The curing of the CIPP must take into account the existing pipe material, the resin system, and ground conditions (temperature, moisture level, and thermal conductivity of the soil).

6. 7.

The heat source piping shall be fitted with suitable monitors to gauge the temperature of the incoming and outgoing water, steam, or air supply.

Another such gauge shall be placed between the impregnated tube and the pipe invert at a minimum of five feet from the termination to determine the temperature during cure.

8. Water temperature during the cure period shall meet the requirements of the resin manufacturer as measured at the heat source inflow and outflow return lines.

9. Provide standby equipment to maintain supply of the heat source.

10. Pipelines that connect the liner to the heat source shall be leak-free and no cure water is allowed to spill to the ground surface. Contractor shall take full responsibility for all required actions to prevent, contain and remediate, and pay all costs including fees and fines for any spilled or leaked cure water at no additional cost to the owner.

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C. Cure Period:

1. Shall be of duration recommended by the resin manufacturer during which time the recirculation of the water to maintain the temperature continuously takes place.

2. 3.

The initiation temperature for cure shall be as recommended by the resin manufacturer.

Temperature monitoring devices shall be installed at all exposed portions of the pipe (beginning and end of run) for each inversion or run of installed liner pipe between the host pipe and the CIPP liner.

3.07 COOL DOWN
A. After the tube is cured, allow a cool-down period prior to opening the downstream plug and returning normal flow back into the system.

B. The CIPP shall be cooled to a temperature below 90 degrees Fahrenheit, or to a temperature as required by the Engineer or as specified on the discharge permit and held for one (1) hour before relieving the head in the inversion pipe.

C. Cool-down may be accomplished by the introduction of cool water into the CIPP. Care shall be taken in the release of the static head so that a vacuum will not develop that could damage the newly installed liner.

Abide by all requirements of any discharge permit for discharging any water from the cool-down process.

Cure and cool down water shall be contained and shall not be allowed to leak on the ground surface or be discharged to the storm drain system.

3.08 SAMPLING AND LABORATORY TESTING
A. The physical properties of the installed CIPP:

1. 2.

Shall be verified through field sampling and laboratory testing.

Materials testing shall be performed at the Contractor’s expense and by an independent third party laboratory recommended by the manufacturer and pre- approved by the Engineer.

3. 4.

Testing shall be in accordance with applicable ASTM test methods to confirm compliance with the requirements for minimum wall thickness, flexural strength, and short-term flexural modulus of elasticity.

Physical properties shall meet those specified in Article 2.03 of this technical specification section or those used in design whichever is more stringent.

B. Testing short term properties of the CIPP liner material from the actual installed liner:

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1. Certified results,

2. Tests shall be conducted at a minimum of one location per pipe size for each alignment, or

3. Per each 1,000 linear feet of installed liner per each alignment (there is only one diameter in heat alignment),

4. 5.

At a downstream manhole.

Sample:
a. Cut from a section of cured CIPP that has been inverted through a like diameter pipe which has been held in place by a suitable heat sink, such as sandbags.
b. The sample cannot be fabricated from material taken from the tube and the resin system used and cured in a clamped mold placed in the downtube.

If required by the Engineer, remove a sample from each pipe to be used to check the liner thickness, by core drilling 2-inch diameter test plugs at locations specified by the Engineer.

The laboratory results shall identify the test sample location as referenced to the nearest manhole and station. Final payment for the project shall be withheld pending receipt and approval of the test results. If properties tested do not meet minimum requirements, the CIPP shall be removed and replaced at no additional cost to the City.

3.09 FINISHED PIPE LINER
A. Finished Liner:

1. Shall be a felt layer impregnated with a thermosetting non-styrene resin to fit tightly against the existing inside pipe wall.

2. Shall be fabricated from materials that, when cured, shall be chemically resistant to withstand internal exposure to sewage gases containing quantities of hydrogen sulfide, carbon monoxide, methane, petroleum hydrocarbons, moisture saturation, and dilute sulfuric acid.

3. 4.

Shall be continuous over the length of pipe rehabilitated.

Shall be free from dry spots, delamination, lifts, fins and the like as identified by the Engineer. Contractor shall remove and replace the CIPP full circumference, from manhole to manhole or as directed by the Engineer if these conditions are present.

B. Interior Surface:

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1. No wrinkles exceeding the tolerances found in Table 1-Liner Repair Guidelines.

2. Interior surface liner within 10 feet of manholes shall be wrinkle free. All wrinkles within this limit shall be properly removed to allow proper installation of flow restricting plugs.

3. Wrinkles in the finished lined pipe which:
a.
b.

Cause a backwater greater than one (1) inch in depth,
Reduce the hydraulic capacity of the pipeline as determined by the Engineer,
c. Cause a maintenance problem or inconvenience as determined by the Engineer,
d.
e.

Cause debris and solids to hang-up and accumulate, or
Reduce the structural stability of the pipe are unacceptable and shall be removed or repaired by the Contractor in a method that is approved by the Engineer at no additional cost to the City.

5. If wrinkles are detected in the installed liner, the Contractor shall provide photographs and dimensions of the wrinkle including height and direction.

Liner terminations at manhole or rodding inlets:

1. 2.

3. The beginning and end of the CIPP shall be cut flush at the inlet and outlet points in the manhole.

The ends shall be permanently sealed to the rehabilitated pipeline to prevent any infiltration between the CIPP and the host pipe.

Sealing shall be performed at no additional cost to the City.

Defective Liner Assessment and Repair Guidelines:

1. All liners that do not meet the quality specified above shall be assessed by the Engineer based on the guidelines shown in Table 1; Engineer’s assessment and remedy shall be final. All repairs shall be performed by the Contractor at no additional cost.

2. All repairs shall meet the original specifications for finished liner.

Table 1. Liner Repair Guidelines
Defect Tolerance
Repair if exceeding 5% of
nominal diameter of host
pipe
Wrinkles, Fins, or Folds
along top of pipe (from 9 to
3 clock position)
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Wrinkles, Fins, or Folds Repair if exceeding 3% of
along bottom of pipe (from 3 nominal diameter of host
to 9 clock position) pipe
Bubbles, Blisters, Dimples,
Lumps, Lifts, or Foreign
Inclusions. Measurements
shall be based on average
circular diameter of liner.

Cracked, Delaminated, Dry
Spots, Burst, Collapsed, or
Unraveled
Repair if exceeding 5% of
nominal diameter of host
pipe
Repair all
(1) It is the intent for the liner installation and all repairs to provide a circular liner that adheres firmly to the host pipe.
(2) All other quality requirements specified elsewhere still apply.

E. Service Lateral Reinstatements
The Contractor shall be responsible for identifying and reconnecting the laterals to the lined pipe. Reinstatement of laterals as identified by CCTV, whether or not shown on the plans, shall be completed by an internal reinstatement by using a pivot-head CCTV camera and a remote cutting tool to locate the lateral from the inside of the lined pipe and cutting a hole matching the lateral diameter. The Contractor shall provide a nearly full-diameter hole, free from burns or projections by brushing the lateral connection area to provide a smooth and crack-free edge. The hole shall be 95% minimum and 100% maximum of the original lateral connection. Laterals shall be reconnected after the main has been tested.

3.10 QUALITY CONTROL
A.

The Contractor shall clean and perform a closed-circuit television inspection after installation of the CIPP liner.

Prior to reconnection of all connected service laterals perform an exfiltration test on the liner. If liner requires repair, exfiltration test shall be performed after repair is complete.

C. Exfiltration test:

1. Plug the downstream end of the lined pipe segment and install a standpipe to the lined pipe's upstream end using appropriately sized 90-degree elbow fittings, plastic standpipe and flexible watertight couplings.

2. 3.

4. Contractor shall remove all air from line to be tested.

The standpipe shall be temporarily secured within the manhole.

Contractor shall perform exfiltration test as specified in ASTM F1216.

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5. The allowable water exfiltration shall not exceed the limits stated in ASTM F1216 for the pipe to be accepted as watertight.

6. If the lined pipe segment does not meet the requirements of the exfiltration test, repair or replace and retest the lined pipe segment so that it meets the requirements at no additional cost to the City.

3.11 REBUILD MANHOLE SECTIONS REMOVED FOR LINER INSTALLATION A. Contractor shall replace any manhole frame and cover and/or cone section removed for liner installation with new materials per manhole details in the Contract Documents. **END OF SECTION**
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SECTION 02642

PIPE BURSTING
PART 1 - GENERAL

1.01 SUMMARY
A. The Contractor shall furnish all equipment necessary to install new high-density polyethylene (HDPE) pipe where sewers are identified for replacement by proven Pipe Bursting methods, complete in place, all in accordance with the requirements of the Contract Documents.

B. Related Sections

1. 2.

3. 4.

SECTION 01720, SEWER OUTAGE NOTIFICATIONS
SECTION 02145, SEWAGE FLOW CONTROL
SECTION 02200, EARTHWORK
SECTION 02735, SANITARY SEWER SYSTEM TESTING AND

CLEANING

5. 6.

SECTION 02736, CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION

OF SANITARY SEWER SYSTEM
SECTION 02739, BUILDING SEWER (LATERAL) CONSTRUCTION

AND REINSTATEMENT

7. 8.

SECTION 15050, GENERAL PIPING
SECTION 15066, HIGH-DENSITY POLYETHYLENE (HDPE) PIPE

1.02 REFERENCES
Commercial Standards:

ASTM 1248 Polyethylene Plastics Molding and Extrusion Materials ASTM D1928 Preparation of Compression Molded Polyethylene Test Samples ASTM D2837 Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials ASTM D2321 Underground Installation of Thermoplastic Flexible Sewer Pipe ASTM D1599 Test for Short Term Rupture Strength of Plastic Pipe, Tubing and Fittings
F. ASTM F585 Insertion of Flexible Polyethylene Pipe in Existing Sewers AWS D1.1 AWS Standard Qualification ProcedureG.

1.03 CONTRACTOR SUBMITTALS
A. Within ten (10) days of Notice to Proceed and at least 14 days prior to pipe bursting, submit instructions and details of all pipe, joints, fittings, metallic pipeline marking tape, and appurtenances to be used in the work including the following:

1. Detailed layouts and schematics describing the installation of all piping and SECTION 02642

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fittings. The Contractor shall include site maps indicating all locations where butt-fusion welding work will occur, lay-down areas, pipe storage areas, insertion pits, and receiving pits. Drawings shall also include the locations and dimensions (width and length) of the insertion and/or receiving pits for pipe insertion and equipment removal.

2. 3.

4. Company pipe bursting experience and the qualifications of the foreman who shall be responsible for the pipe bursting work supporting the experience requirements in accordance with Section 1.04 below.

Winch system: Product information such as catalog sheets, specifications, dimensioned drawings, pulling capacity (in tons), installation details/sketches and other pertinent information for the proposed installation work.

Fusion machine: Product information such as catalog sheets, specifications, welding procedures, data logger and a sample of the recorded welding sequence.

5. 6.

Mole: Type of bursting head used for the project including main lines and laterals.

Lubrication: Bentonite and/or polymer lubrication if needed to reduce the frictional force.

B. The Contractor shall verify with the pipe manufacturer all procedures applied for fusion welding.

1.04 CONTRACTOR QUALIFICATIONS AND QUALITY ASSURANCE
A. Pipe Bursting Contractor and Personnel Qualifications:

1. 2.

The Contractor shall submit written certification from the pipe bursting system provider that the general contractor is a fully-trained and/or licensed user of the corresponding system. Operation of the system shall be performed by trained personnel.

Minimum experience of 100,000 linear feet with pipe bursting existing gravity sewer pipe and replacing with HDPE pipe within the last three years in similar soils.

3. 4.

Pipe bursting replacement experience with upsizing of at least 50,000 linear feet.

The foreman in the field shall have a minimum of two years’ experience in pipe bursting work and shall have worked on at least three projects using the same equipment required for this project. No substitution of personnel will be allowed without the written acceptance of the Engineer.

Fusion joining and other procedures necessary for correct assembly of the polyethylene pipe will be done only by personnel trained in those skills to the satisfaction of the Engineer and the pipe supplier.

Only those tools designed for the aforementioned procedures and approved by the pipe supplier and the Engineer shall be used for assembly of pipe and fittings to ensure proper installation.

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D. The Contractor shall perform routine inspection and maintenance of the equipment furnished under this project as recommended by the manufacturer to minimize installation failures.

PART 2 - PRODUCTS

2.01 PIPING
A. The Contractor shall supply equipment specifically designed for pipe bursting using HDPE, in accordance with Section 15066, High-Density Polyethylene Pipe.

B. Handling and Storage: The Contractor shall exercise special care during the unloading, handling, and storage of all polyethylene pipe to ensure that the pipe is not cut, gouged, scored or otherwise damaged. Any pipe that has cuts in the pipe wall exceeding 5 percent of the wall thickness shall not be used and shall be removed from the site and replaced at the Contractor's cost. The pipe shall be stored so that it is not deformed axially or circumferentially.

2.02 EQUIPMENT
Only proven techniques and equipment shall be allowed, or as approved by the Engineer. The pulling ability of the system shall be suitable for the pipe bursting required. This includes pipe bursting the existing sewer lengths to the new pipe diameter. The winch system shall have load controls to ensure the equipment is not overstressed due to a blockage.

PART 3 - EXECUTION

3.01 GENERAL REQUIREMENTS
A.

The Contractor shall not exceed approved insertion rate or force at any time.

The Contractor shall monitor for surface heaving and is solely responsible for the costs for repairing any utility or surface damage caused by heaving.

Pipe Damage: All pipe damaged before, during or after installation shall not be used and shall be removed from the site by the Contractor and replaced at his cost to the satisfaction of the Engineer. The Contractor shall inspect the pipe prior to installation to ensure that there is no damaged pipe.

The Contractor shall excavate all building sewer (lateral) connections to the existing main line (by segment) prior to pipe bursting and trench plate over the excavation to expedite reconnection of the building sewer (lateral) following HDPE main line installation.

The Contractor shall disconnect all existing building sewer (laterals) from the existing main line prior to pipe bursting to minimize building sewer damage.

All utilities crossing within (3) feet (radially) of the pipe burst shall be exposed prior to the start of pipe bursting operations. Utilities damaged by pipe bursting shall be repaired at the expense of the Contractor.

G. Existing pipe may be bedded and backfilled in gravel. Contractor should calculate pull forces based upon this condition assumption as well as consideration of pipe length.

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H. Pipe bursting existing pipe and replacing with new pipe shall cause no more than a maximum of one-half inch (1/2”) heave from the existing pavement surface. The Contractor shall employ all necessary procedures to prevent damage to the pavement surface because of heave (ex: surcharging or running a heavy equipment on top of the pipe bursting head while replacing the existing line, digging out the material between the existing pipe and utility lines, etc.). Any damage done to the pavement due to pipe bursting shall be repaired by the Contractor at no additional cost to the Owner.

3.02 INSTALLATION OF PIPE
A.

After the sewage diversion/bypass is in effect and prior to pipe bursting, the Contractor shall flush and clean all parts of the system by removing all accumulated debris, rocks, gravel, sand, silt, roots, and other foreign material from the pipe per the Contract Documents.

Televise the mains for abnormality that could prevent pipe bursting construction and to determine the locations of the laterals that are in service. If any abnormality that could prevent the pipe bursting operation is found, the Contractor shall inform the Engineer immediately for direction.

Prior to pipe installation, Contractor shall determine if point repairs are required for proper installation of pipe. Separate payment for this work, in conformance with the Point Repair bid item, will be made and it is not considered incidental to the pipe bursting process.

For point repairs installed after sewer cleaning and televising has occurred, the Contractor shall conduct a follow-up CCTV inspection prior to pipe bursting.

Existing Liner (if applicable): If the existing pipe segment contains a liner, the Contractor shall remove the liner prior to pipe bursting and any concrete encountered over the pipe where the liner had been inserted.

F. Pipe Insertion: The upsizing process shall be guided by a constant tension system. The upsizing method shall not cause excessive disruption to the above ground terrain or improvements except at the insertion and receiving pits.

G. Receiving Pit (Pulling): When pulling from a manhole, the Contractor shall remove all concrete and or pipe necessary to allow for the bursting head and pipe to enter the manhole with minor disruption to the desired position. Field joints at the manhole base shall be avoided or as approved by the Engineer. In the case when the pulling pit is outside a manhole, the Contractor shall provide suitable supports to the excavation to withstand the force required to move the pipe being inserted. The Contractor shall maintain a stable trench during the entire pulling process.

H. Insertion Pit: The sloped excavation down to the springline of the existing sewer shall have an entry length of 2.5 x D, where D is the depth to the pipe invert. The length of the spring line horizontal excavation shall be at least 12 x d, where d is the diameter of the HDPE pipe being inserted.

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Sample of Insertion Pit Configuration for Pipe Bursting Installation (Source: IPBA, Guideline for Pipe Bursting, 2012)
I. Intermediate Pits or Setup: The Contractor shall minimize the length of the pipe bursting tool or shall utilize intermediate pits or setups for pipe runs with curves whose radius is less than 250 feet.

J. Intermediate Excavation: The Contractor shall minimize the length of the pipe bursting tool or shall excavate at angle points or manufactured bends greater than five degrees or grade changes greater than 9% to assist pipe bursting tool.

K. Termination: The pulling operation will tend to stretch the pipe; excessive stretching of 1.5 percent will not be allowed. On reaching the exit point, the pipe shall be pulled beyond this point to compensate for the stretching. A 12-hour minimum relaxation period is required before the sewer is cut to length, attached to manholes or structures, and before laterals can be attached to the new sewer. The Contractor shall provide bypass pumping during construction and the relaxation period.

L. The Contractor shall anchor the pipe to concrete structures or manholes after the pipe has been installed along the length of sewer main replaced. The Contractor shall use a pipe-to-manhole connector per Section 15066, HDPE Pipe to connect pipe to the structure/manhole.

M. Only fusion joining equipment designed for this purpose and approved by the pipe manufacturer or supplier and the Engineer shall be used for assembly of pipe fittings to ensure proper installation. The heater plate shall be equipped with accurate temperature gages to measure the temperature of the plate surfaces and to assure uniform heating such as thermometers or pyrometers. Fusion joining and other procedures necessary for correct assembly of the polyethylene pipe shall be done only by personnel trained in those skills to the satisfaction of the Engineer and the pipe supplier.

Sections of polyethylene pipe shall be joined into continuous lengths on the job site above ground. The joining method shall be the butt fusion method and shall be performed in strict accordance with the pipe manufacturer’s recommendations.

Fusion equipment used in the joining procedure shall be capable of meeting all conditions recommended by the pipe manufacturer, including but not limited to, fusion temperature, alignment, and fusion pressure. Electrofusion may be used for field closures as necessary.

A fire-retardant bag or suitable enclosure shall be used with the heater plate to facilitate control of the heating process and to protect the heater plate surfaces from dirt and other debris when not in use. The heater plate surfaces shall be cleaned SECTION 02642

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regularly as needed to prevent accumulation of fusion welding residues or other substances that may result in faulty pipe joining.

P. Butt fusion shall conform to ASTM D2657 and pipe manufacturer’s criteria for the type of joining. Joint strength shall be equal to that of the adjacent pipe.

Q. The inside and outside of pipe ends shall be cleaned with a cotton or non-synthetic cloth to remove dirt, water, grease, and other foreign materials. The pipe ends shall be cut square and carefully aligned just prior to heating.

After achieving the proper melt pattern, the pipe ends shall be brought together in a firm, rapid motion applying sufficient pressure to form a pipe bead (1/8-inch to 3/16-inch in height) around and inside the entire circumference of the pipe.

The inside weld bead shall be removed by cutting the bead away without scoring the inside wall of the pipe. The Contractor shall submit to the Engineer, for review as part of the submittal requirements, a debeading process for use in removing the internal bead for the newly joined HDPE pipe sections.

3.03 INSPECTION
Testing and inspection shall be in accordance with the requirements of Section 02735, Sanitary Sewer System Testing.
**END OF SECTION**
SECTION 02642

PIPE BURSTING

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Technical Specifications
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SECTION 02643

PIPE REAMING
PART 1 – GENERAL

1.01 DESCRIPTION
A. This specification defines the method and material for replacing existing sanitary sewer main by pipe reaming methods. Pipe reaming is a proprietary trenchless replacement method accomplished using HDD equipment and specialized tooling.

Pipe installation shall consist of furnishing all labor, equipment and materials for a complete and gravity operational pipeline in accordance with the Contract Documents.

The Contractor has the option, if deemed feasible, to pipe burst sanitary sewer mains in accordance with Section 02642, upon written acceptance of the Engineer.

The Contractor shall be responsible for paying any and all royalty fees associated with the pipe reaming technology. The Contractor shall comply with all legal obligations and fees for the use of this technology.

B. Related Sections

1. 2.

3. SECTION 01560, TEMPORARY CONTROLS
SECTION 02145, SEWAGE FLOW CONTROL
SECTION 02735, SANITARY SEWER SYSTEM TESTING AND

CLEANING

4. SECTION 02736, CLOSED CIRCUIT TELEVISION (CCTV)

INSPECTION OF SANITARY SEWER SYSTEM

5. 6.

7. SECTION 02800, TRAFFIC CONTROL
SECTION 15050, GENERAL PIPING
SECTION 15066, HIGH DENSITY POLYETHYLENE (HDPE) PIPE

1.02 DEFINITIONS
A. Reamer
A cutting tool pushed or pulled through the borehole in order to enlarge the hole to a diameter sufficient for installation of the product (carrier) pipe.

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Technical Specifications
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B.

Bent Sub
A short threaded piece of pipe with an axial offset or angle used in a pipe string to produce leading edge asymmetry.

Bottom Hole Assembly (BHA)
The combination of bit, downhole motor, subs, survey probe, and nonmagnetic collars assembled at the leading edge of a drill string.

Dimension Ratio (DR)
The ratio of the specified outside diameter to the specified minimum wall thickness that is common for all pipe sizes of specific dimension ratio series.

Drill Pipe
Tubular steel conduit fitted with special threaded ends called tool joints. The drill pipe connects the HDD rig with the bit or reamer and facilitates both pumping drill fluid and advancing or retracting the bit or reamer.

Drill String
The total length of drill pipe in a drill borehole, including bottom hole assembly.

Drilling Fluid/ Mud
A mixture of water, a viscosifier (typically bentonite), and/or polymers that is pumped to the drill bit or reamer to facilitate cutting, to transport drilled spoil, to stabilize the borehole, to cool and clean cutters, and to reduce friction between the product (carrier) pipe and the wall of the hole
F. Entry/ Exit Angle
The angle relative to the horizontal plane at which the drill string enters or exits the ground surface during pilot hole drilling.

Ground Mat
Metal mats rolled out on either side of drill rack for operator and crew to stand on during operation to give grounding protection in case of electrical strike.

Grout
A pumpable mixture, typically composed of water, cement, fine sand, fly ash, bentonite, and/or chemical components which is commonly used to fill voids or annular spaces, strengthen incompetent soil or rock, or prevent the flow of groundwater.

SECTION 02643

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Technical Specifications
Page TS-103
I. Horizontal Directional Drilling (HDD)
A trenchless excavation method accomplished in three phases. The first phase consists of drilling a small diameter pilot hole along a designed directional path. The second phase consists of enlarging the pilot hole to a diameter suitable for installation of the pipe string. The third phase consists of pulling the product pipe into the enlarged hole.

HDD is accomplished using specialized HDD rig with ancillary tools and equipment.

J. Locator
An electronic instrument used to determine the position and strength of electro- magnetic signals emitted from a transmitter sonde in the pilot head of a directional drilling system. Sometimes referred to as a walkover system.

Marsh Funnel Viscosity
A measure of the flow rate of a fluid through a calibrated funnel. A Marsh funnel is typically used to measure drilling fluid and slurry viscosity, in seconds per quart (sec/qt) of fluid. The Marsh funnel viscosity of water is 26 seconds per quart..

Obstruction
Any hard object laying completely or partially within the design pathway of the bore and pipeline that prevents further advancement of the drill bit, pre-reamer, reamer, and/or pipe.

Ovality
There are two options: a) the difference between the maximum and mean diameter divided by the mean diameter, and b) the difference of the mean and minimum divided by the mean, at any one cross section of a pipe, generally expressed as a percentage.

Pilot hole
A small diameter hole directionally drilled along a designed path in advance of reaming operations and pipe installation.

Product (carrier) Pipe (ASCE 36-15)
Pipe for conveyance of water, gas, sewage, or other products or services.

Pull- Back
The act of installing a product pipe in a HDD drilled hole by pulling it to the HDD rig from the end hole opposite the rig
Q. Pull Back Force
The tensile load applied to a drill string during the pull-back process.

SECTION 02643

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R. Sonde or Transmitter Housing
Integral unit in the directional drill head which also houses the sonde radio sending unit.

Stakedown Plate
A plate staked to the ground to stabilize the forward end of the drill rack.

Sub
A short threaded piece of pipe used in a drill string to perform a special function.

Survey Tools
Download equipment and instruments used to determine the position of a bore in directional drilling.

V. Walkover System
See locator.

W. Wash Pipe
A drill pipe that is run, or rotated, concentrically over a smaller drill pipe so that the small (internal) pipe can be freely moved or rotated.

X. Work Plan
A document including any and all obligations, duties and responsibilities necessary to the successful completion of the project assigned to or undertaken by contractor under the Contract Documents, including all labor, materials, equipment and other incidentals, and the furnishing thereof.

1.03 SUBMITTALS
A.

The Contractor shall not initiate pipe reaming until all submittals are received, reviewed, and accepted by the Engineer.

Submit scaled/dimensional layout drawings that include the planned equipment, equipment setup areas, pipe layout areas, excavations, entry and exit pits, utilities, and drilling fluid containment items. The Contractor shall limit its operations to the areas shown on the Drawings, or as otherwise accepted in writing by the Engineer.

Drill entrance and exit angles shall be as shown on the submitted reaming plan and as approved by the Engineer, unless otherwise approved in writing by the Engineer.

Submit drawing showing configuration of reaming head within existing pipe and with pipe string over existing pipe.

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C. The Contractor shall provide a work plan including pipe layout, spoils handling; certifications, shop drawings and samples for all materials specified for use on the project.

D. The Contractor shall submit a detailed schedule with all major construction activities and durations, with beginning and completion dates shown. The schedule shall include:

1. 2.

3. 4.

5. 6.

7. 8.

Rig mobilization and setup
Pilot hole drilling
Method of centralizing reaming tool within existing pipe Layout and thermal butt-fusing of pipe
Pressure testing of pipe prior to pullback
Reaming and pullback of pipe
Pressure testing of pipe after installation
Cleanup and restoration
E.

Work plan shall include a bore plan, if applicable.

Submit detailed descriptions of methods, equipment, and materials to be used for the pipeline installation. Descriptions of materials shall be accompanied by Material Safety Data Sheets (MSDS) and manufacturer’s descriptions and warranties. Descriptions of equipment shall include manufacturer’s specifications, calibrations, appropriate drawings, photographs, and descriptions of any modifications since manufacture.

G. For pipe reaming installations at an invert depth greater than 10 feet, the submittal shall include calculation of the loads and materials stresses imposed by the pipe reaming process during the pipe installation and adequacy of the pipe material and thickness to withstand the stresses without incurring long-term deflection of the pipe cross section, pipe collapse (during or after installation) or exceeding the allowable stresses for the pipe material. Calculations shall be:

1. Signed and sealed by a Professional Civil Engineer registered in the State of California;

2. 3.

4. 5.

6. Clearly identify all parameters used;
State all assumptions made in the calculations;
Identify all sources of information;
All sources of information shall be widely accepted industry standard and Acceptable to the Engineer.

The Contractor shall provide Material Safety Data Sheets (MSDS) for all drilling fluid additives used or on site.

Submit examples of the daily logs and records for acceptance by Engineer.

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J. Submit methods and procedures for filling the pipe with fluid during pull back.

K. Submit expected mud and/or drilling fluid weights and viscosity for stabilization of the bore hole.

L. Submit methods for disposal of waste materials resulting from the pipeline construction, including drilling fluids, cuttings, waste oil, fuel, discharge water, etc.

The Contractor shall identify the disposal site and submit a letter from the licensed disposal facility indicating willingness and legal authority to accept the described and anticipated waste products.

M. Submit contingency plans for remediation of potential problems that may be encountered during the drilling operations. The contingency plans shall address the observations that would lead to the discovery of the problem, the methods that would be used to mitigate the problem, and estimated time and cost to mitigate the problem and resume the installation. Potential problems that shall be addressed include:

1. Obstructions encountered.

2. 3.

Inadvertent drilling fluid returns (frac-out).

Loss of circulation.

4. Inability to advance drill stem or pipe.

5. 6.

Drill stem or pipe twisted off or broken off in borehole.

Pipe collapse.

N. Traffic protection equipment for the pipe layout area.

1.04 QUALITY ASSURANCE
A. The Contractor shall measure and record drilling fluid viscosity and density at least three (3) times per shift with at least two (2) hours between readings, using calibrated Marsh funnel and mud balance. These measurements shall be included in daily logs submitted to the Engineer. The Contractor shall document modifications to the drilling fluids, by noting the types and quantities of drilling fluid additives and the dates and times when introduced. The reason for the addition of drilling fluid additives or other modifications shall be documented and reported.

B. The drilling fluid pressures shall be monitored at the pump discharge. These measurements shall be made during pilot hole drilling, reaming, and pullback operations. Certificates, dated within six months of use and current throughout use, SECTION 02643

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Technical Specifications
Page TS-107
shall be:

1. 2.

Pressure gauge is accurate to ±0.5 psi.

Volumetric totalizer meter is accurate to ±0.1 cubic feet.

1.05 EXPERIENCE
A. The pipe reaming Contractor shall have three (3) years demonstrated successful experience installing pipelines using horizontal directional boring on at least three (3) projects with similar pipe diameter, pipe material, drive lengths, ground type, and groundwater conditions. The Contractor shall submit evidence of successful experience with pipe reaming including at least (3) projects listed with project name, owner or owner’s representative, location, diameter, total length, maximum drive length, depth, ground and groundwater conditions, drill rig, pipe, and problems encountered and how resolved, any claims and how resolved. Owner or owner’s representative shall be listed with address and telephone number. The Contractor shall demonstrate proof of instruction by the licensor or provide on-site services of the licensor until such time the contractor's competency to perform the work is satisfactory to the Owner and/or Engineer.

B. The pipe reaming Contractor superintendent(s) and directional drilling equipment operator(s) shall each have at least three (3) years’ experience using directional drilling equipment on at least 3 projects with similar diameters, drive lengths, and ground and groundwater conditions. The Contractor shall submit resumes for the superintendent(s) and boring machine operator(s) that will be on site for the duration of the boring process. Personnel experience shall include project names, locations, type and diameter of pipe installed, total length, maximum drive length, depth, ground and groundwater conditions and owner or owner’s representative shall be listed with address and telephone number. The drill rig operator and locator listed in the submittal shall be on site during all construction related activities required for the pipe reaming installation.

C. Contractor’s engineer shall be a Professional Engineer registered in the State of California. Experience shall include design calculations on three (3) pipe reaming projects for at least three (3) years with similar diameters, drive lengths, and ground and groundwater conditions
PART 2 – PRODUCTS

2.01 HIGH DENSITY POLYETHYLENE (HDPE) PIPE
A. Pipe shall be solid wall high density polyethylene (HDPE) pipe in accordance with Section 15066, High Density Polyethylene (HDPE) pipe.

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the site and replaced at the Contractor's cost. The pipe shall be stored so that it is not deformed axially or circumferentially.

2.02 DIRECTIONAL DRILLING EQUIPMENT
A. The Contractor shall provide all equipment, materials, and personnel necessary for completing the installation as shown on the Drawings and specified herein. The equipment and materials shall include but are not limited to:

1. 2.

Directional drilling rig with all ancillary equipment, including drill pipes, cutting bits reaming bits, swivels, motors, pumps, hoses, missing equipment, drilling fluid processing equipment (cutting separation equipment), downhole survey equipment, fluid pressure and flow rate monitoring equipment, spare parts, pipe handling equipment, crane, backhoe, roller, side boom tractors, control cabin, control equipment, and office equipment.

Drilling fluid and additives. All fluid additives shall be NSF/ANSI 60 certified other than soda ash.

B. The capacity of the directional drilling system used by the Contractor shall be adequate to install the specified pipeline as required in this Section

2.03 WATER
A. Potable water shall be used.

2.04 INSTRUMENTATION AND MONITORING
A. At all times during the pilot bore the Contractor shall provide and maintain an instrumentation and monitoring system that is capable of accurately locating the position of the drill head in the x, y and z, axes within one (1) to two (2) inches, maximum. The Contractor shall provide and maintain equipment that is capable of monitoring and recording drilling fluid pressures, drilling fluid flow rates, and drill pipe thrust, torque, and pullback loads.

1. Drill Head Locator System: Contractor shall monitor and record x, y, and z coordinates of the drill head relative to an established surface survey bench mark. Deviations between the recorded and design bore path shall be calculated and reported on the daily log. If the deviations exceed tolerances specified elsewhere, such occurrences shall be reported immediately to the Engineer.

2. Drill Pipe Thrust and Torque: Drill pipe thrust and torque shall be measured and recorded at least once per drill pipe length or at 30 feet or 30-minute intervals, whichever is most frequent. Loss of circulation or sudden increases in torque or thrust shall be reported to the Engineer immediately. All thrust and torque measurements shall be made during pilot hole drilling, pre- reaming, reaming, and pullback, and shall be submitted with daily logs.

SECTION 02643

PIPE REAMING

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Technical Specifications
Page TS-109
Instances of thrust, torque, or pullback exceeding allowable limits shall be reported immediately to the Engineer.

2.05 DRILLING FLUIDS
A. Drilling fluid pressures and flow rates shall be continuously monitored and recorded by the Contractor. The drilling fluid pressures shall be monitored per the requirements of this section.

2.06 DRILL RODS/DRILL STEM
A. The Contractor shall provide high quality drill pipes that the Contractor has inspected and determined are adequate for the project requirements. Bent, cracked, or fatigued drill pipes shall not be used. Threads must be in good condition. The lengths of drill pipes should be measured and recorded meeting the requirements of ASTM F714 Polyethylene (PE) Plastic Pipe SDR (17) based on outside diameter, ASTM D1248 and ASTM D3350.

2.07 FRAC OUT SUPPLIES
A. Before drilling is allowed to begin, the Contractor shall procure adequate equipment and supplies to contain hydrofractures. At a minimum the following must be on site.

1. 2.

3. 4.

5. Vacuum truck or tank.
40 Sand Bags (20 filled, 20 empty).
2 Hand Shovels.

Push Broom.

Bucket.

Before drilling is allowed to begin, the Contractor shall construct a 6-inch high berm around the exit area. The berm shall be constructed out of a straw wattles and temporary asphalt. The berm shall enclose an area no smaller than 10 feet wide and 20 feet long.

PART 3 – EXECUTION

3.01 MOBILIZATION
A. The Contractor shall mobilize all equipment, materials, and personnel necessary to construct the HDPE pipeline using the pipe reaming process at the locations shown in the Drawings.

B. Entry Area: The Contractor shall set up temporary workspace in the areas approved by the Engineer. Appropriate precautions and measures shall be employed by the SECTION 02643

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Technical Specifications
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Contractor to prevent erosion, surface drainage, and spillage of drilling fluids or other materials that could adversely impact the environmental quality of the site. Hay bales or other suitable materials shall be used to line the work area to minimize erosion and contain any spillage or runoff.

Exit Area: The exit area shall have a drilling fluid pit for containing drilling fluids and cuttings. Suitable materials combined with temporary asphalt berms shall be used to berm the exit area to minimize drilling fluid runoff.

Pipe Layout Area: The Contractor shall indicate the pipe layout area in the engineering submittals. Traffic barricades shall be used to protect traffic and the pipe. A pipe launcher or roller system shall be provided by the Contractor to facilitate pipe pullback.

E. The Contractor shall conduct walkover site inspection recording by Station, noting potential sources of interferences prior to commencing drilling operations.

3.02 GENERAL REQUIREMENTS
A.

The Contractor shall not exceed approved insertion rate or force at any time.

All utilities crossing within (3) feet (radially) of the pipe shall be exposed prior to the start of pipe reaming operations. Utilities damaged by pipe reaming shall be repaired at the expense of the Contractor.

Existing pipe may be bedded and backfilled in gravel. Contractor should calculate pull forces based upon this condition assumption as well as consideration of pipe length.

Only fusion joining equipment designed for this purpose and approved by the pipe manufacturer or supplier and the Engineer shall be used for assembly of pipe fittings to ensure proper installation. The heater plate shall be equipped with accurate temperature gages to measure the temperature of the plate surfaces and to assure uniform heating such as thermometers or pyrometers. Fusion joining and other procedures necessary for correct assembly of the polyethylene pipe shall be done only by personnel trained in those skills to the satisfaction of the Engineer and the pipe supplier.

F. Sections of polyethylene pipe shall be joined into continuous lengths on the job site above ground. The joining method shall be the butt fusion method and shall be performed in strict accordance with the pipe manufacturer’s recommendations.

Threaded or solvent-cement joints and connection are not permitted. Fusion equipment used in the joining procedure shall be capable of meeting all conditions recommended by the pipe manufacturer, including but not limited to, fusion temperature, alignment, and fusion pressure. Electrofusion may be used for field closures as necessary.

SECTION 02643

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Technical Specifications
Page TS-111
G. A fire-retardant bag or suitable enclosure shall be used with the heater plate to facilitate control of the heating process and to protect the heater plate surfaces from dirt and other debris when not in use. The heater plate surfaces shall be cleaned regularly as needed to prevent accumulation of fusion welding residues or other substances that may result in faulty pipe joining.

Butt fusion shall conform to ASTM D2657 and pipe manufacturer’s criteria for the type of joining. Joint strength shall be equal to that of the adjacent pipe.

The inside and outside of pipe ends shall be cleaned with a cotton or non-synthetic cloth to remove dirt, water, grease, and other foreign materials. The pipe ends shall be cut square and carefully aligned just prior to heating.

J. After achieving the proper melt pattern, the pipe ends shall be brought together in a firm, rapid motion applying sufficient pressure to form a pipe bead (1/8-inch to 3/16-inch in height) around and inside the entire circumference of the pipe.

K. The butt-fused joint shall be in true alignment and shall have uniform rollback beads resulting from the use of proper temperature and pressure. The joint shall be allowed adequate cooling time before removal of pressure. The fused joint shall be watertight and shall have tensile strength equal to that of the pipe. All defective joints shall be cut out and replaced at the expense of the Contractor.

L. The inside weld bead shall be removed by cutting the bead away without scoring the inside wall of the pipe. The Contractor shall submit to the Engineer, for review as part of the submittal requirements, a debeading process for use in removing the internal bead for the newly joined HDPE pipe sections.

3.03 INSTALLATION OF PIPE
A. After the sewage diversion/bypass is in effect and prior to pipe reaming, the Contractor shall flush and clean all parts of the system by removing all accumulated debris, rocks, gravel, sand, silt, and other foreign material from the pipe per the Contract Documents.

B. Televise the mains for abnormality that could prevent pipe reaming construction and to determine the locations of the laterals that are in service. If any abnormality that could prevent the pipe reaming operation is found, the Contractor shall inform the Engineer immediately for direction.

C. Prior to pipe installation, Contractor shall determine if point repairs are required for proper installation of pipe. Separate payment for this work, in conformance with the Point Repair bid item, will be made and it is not considered incidental to the pipe reaming process.

For point repairs installed after sewer cleaning and televising has occurred, the Contractor shall conduct a follow-up PACP CCTV inspection prior to pipe reaming.

Perform test roll of locating equipment on surface to ensure correct readings. Perform test roll at the start of the pipe replacement to ensure accuracy and note discrepancies.

Include here: Record and submit test roll data.

SECTION 02643

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Technical Specifications
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F. The Contractor shall maintain the work area in a manner that shall minimize adverse impacts to private property and on other public use activities. The Contractor shall proceed with work in a safe, orderly manner, while maintaining the work site free of debris and unnecessary equipment and materials.

The Contractor shall provide adequate control of surface water drainage and runoff and provide adequate erosion control measures in accordance with Section 01560 Temporary Controls.

The Contractor shall control operational pressures, drilling fluid spillage. This includes any spillages or returns at entry and exit locations or at any intermediate point. All inadvertent returns or spills shall be promptly cleaned up. The Contractor shall maintain in site mobile spoil containment and removal equipment during all drilling, reaming, and pullback operations and shall be capable of quickly containing and removing spoils. The Contractor shall immediately notify Engineer of any inadvertent returns or spills and immediately clean up the return or spill. The Contractor shall provide equipment and materials on-site to contain and clean up any drilling fluid returns or frac-outs and shall prevent drilling fluids from entering any creeks or storm drains.

I. The Contractor shall select mixture proportions to ensure borehole stability, reduce drag on the pipe, and completely fill the annular space between the bore and the pipe to control settlement. Management and disposal of drilling fluids shall be the Contractor’s responsibility.

J. Pipe installation sections shall be scheduled to maximize installation lengths and minimize the number of insertion pits required. Insertion pits shall be located over manhole replacement locations, if possible, to minimize surface disturbance.

K. The pilot hole shall follow the design path of the bore shown on the Contract Drawings.

1. Horizontal and Vertical Tolerances
Approximately 50% of diameter maximum or 50% of difference of pipe ID and drill steel OD, one (1) to two (2) inches, maximum.

L. The pilot bore in combination with the existing pipe (host pipe) shall be reamed using equipment and methods submitted by the Contractor. All measurements called for during the pilot boring operation except tracking shall also be made and recorded during the reaming operations and submitted on the daily logs.

M. Pipe Pullback

1. 2.

The pipe shall be installed by pulling it into the reamed bore path in a continuous operation, behind a final reaming tool selected by the Contractor.

Pull detection wire along with HDPE pipe.

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3. The pipe shall be isolated from excessive torsional and axial stresses by a swivel device with a pre-established breakaway tensile capacity that is lower than the allowable tensile strength of the pipe.

4. 5.

The Contractor shall monitor and repair damaged pipe roller during the pullback operation to avoid damage to the pipe.

Contractor shall cease operation if the pipe is damaged and shall repair the pipe using the manufacturer’s recommended procedure before resuming installation.

Pipe shall immediately follow the reamer. The reamer overcut should not exceed the maximum diameter of the replacement product by more than 3 inches.

Termination: The pulling operation will tend to stretch the pipe, excessive stretching of 1.5 percent will not be allowed. On reaching the exit point, the pipe shall be pulled beyond this point to compensate for the stretching. A 12-hour minimum relaxation period is required before the sewer is cut to length, attached to manholes or structures, and before laterals can be attached to the new sewer. The Contractor shall provide bypass pumping during construction and the relaxation period.

P. The Contractor shall anchor the pipe to concrete structures or manholes after the pipe has been installed along the length of sewer main replaced. The Contractor shall use a pipe-to-manhole connector per Section 15066, HDPE Pipe to connect pipe to the structure/manhole.

Q. Slurry generated by the installation shall be disposed of in accordance with all applicable local, state and federal regulations.

3.04 SAFETY
A. Combustible materials (fuel, oil, lubricants, etc.) shall be stored in a well-ventilated storage facility as required by law.

B. The Contractor shall procure and maintain all temporary lighting needed for Contractor’s operations, safety, testing, and inspection. Temporary lighting shall be removed after completion of construction.

The Contractor shall erect appropriate barriers, warning lights, and signs, painted with approved colors, warnings, and graphics as required to ensure adequate warning to personnel and the public.

Install an enclosure fence around the work areas. The enclosure fence shall include a lockable gate and should be adequate to prevent entry of animals and people from unauthorized entry.

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3.05 ADVANCED NOTICE AND INSPECTIONS
A. The Contractor shall provide at least 2 working days advance written notice to the Engineer of the planned inception of major drilling activities, including pilot hole launch, prereaming, reaming, and pipe pullback. The Contractor shall immediately notify the Engineer, in writing, when any significant problems are encountered or if ground conditions are construed by the Contractor as being materially and significantly different than the conditions presented in the Geotechnical Report and the Contract Documents. All work by the Contractor shall be performed in the presence of the Engineer, unless Engineer grants prior written approval to perform such work in Engineer’s absence.

B. The Contractor shall undertake the following steps prior to commencing drilling operations:

1. 2.

Notify USA at least three (3) working days prior to commencing drilling operations.

Positively locate and stake all existing lines, cables, or other underground facilities including exposing any crossing or parallel facilities which are located within 10 feet of the design drill path.

3. 4.

Modify drilling practices and downhole assemblies to prevent damage to existing facilities.

Pothole utilities as described in the Contract Documents and report any possible conflicts to Engineer.

Contractor shall be responsible for all losses and repairs occasioned by damage to underground facilities resulting from drilling operations.

C. The Contractor shall notify the Engineer immediately in the event that any obstruction is encountered that prevents further advancement of the drill stem, or pullback of the pre-reamer, reamer and/or pipe. The Contractor and Engineer shall investigate the cause and together determine and appropriate response. Appropriate response may include revisions to equipment or methods, retraction and re-drilling of a portion of the bore, or abandonment of the hole. If abandonment is deemed necessary, the Contractor shall recover, to the extent practical, any drill pipe and tools in the bore, and properly abandon the bore, unless otherwise directed in writing by the Engineer.

If the bore is abandoned, the Contractor shall pressure-grout the abandoned bore with a lean cement-sand grout mixture, or approved materials. If the bore is abandoned, the Contractor shall be allowed to begin a second attempt to install the pipeline at an alternate location approved in writing by the Engineer. The Contractor shall take all reasonable actions to complete the installation with minimal delays. The extra costs and payments associated with encountering the obstruction shall be negotiated between the Town and Contractor, based on reasonable time and materials.

SECTION 02643

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3.06 DAILY LOGS AND RECORDS
A. Daily logs and records shall be maintained by the Contractor, documenting drilling lengths, location of drill head, drilling fluid pressures and flow rates, drilling fluid losses, inadvertent returns, drilling times required for each pipe joint, any instances of retraction and re-drilling of the pilot bore of segments thereof, and any other relevant observations. These records shall be maintained and updated daily, or more frequently, as directed by the Engineer. The position of the drill head shall be continuously tracked if work deviates from existing pipe alignment. Submit complete, legible, written daily logs and records within one (1) working day of the date to which the records correspond.

3.07 NOTIFICATIONS
A. Submit written notification at least three (3) working days prior and profile of the bore path and the location shown on the plans and specifications herein. Notify the Engineer immediately upon discovery of any deviations.

B. Document any variations between the actual plan and profile of the bore path and the location shown on the plans and specifications herein. Notify the Engineer immediately upon discovery of any deviations.

3.08 REMOVAL OF TEMPORARY FACILITIES
A. At the completion of construction, Contractor shall remove all temporary facilities installed by the Contractor. Unused soil, aggregate, and other materials shall be removed and disposed of at approved sites. Any damage to streets, lawns, common areas, and sidewalks shall be repaired to their original or better conditions at no additional cost to the City.

3.09 INSPECTION AND TESTING
A. Cleaning and Video Inspection
After pipe reaming installation, the pipes shall be cleaned and tested by the Contractor in accordance with the requirements of Section 02735 Sanitary Sewer System Testing and Cleaning.

B. Mandrel Test
Damage to the pipe resulting from excessive pullback, bending, torsional stresses, or external pressure during installation is the responsibility of the Contractor, including costs for replacement and labor and materials. To confirm no damage to the pipe, upon completion of insertion and pull back, the Contractor shall perform a mandrel test.

At least seven (7) days after installation, the completed pipe installed by pipe reaming methods shall be mandrel tested. The total deflection of the installed pipe shall not exceed 7-1/2% of the inside pipe diameter.

SECTION 02643

PIPE REAMING

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The vertical deflection shall be checked by manually pulling a go/no-go deflection testing mandrel through the pipe. The mandrel shall be specifically designed for this purpose, and the Contractor shall submit shop drawings to the Engineer detailing the type of mandrel to be used. The mandrel shall be as manufactured by Armco In., or approved equal, and shall have the specified accuracy in all positions of rotation. If the mandrel cannot pass through the pipe, it shall be considered collapsed and damaged.

The Contractor shall conduct all deflection testing in the presence of the Engineer.

Should any pipe section exceed the maximum deflection specified, the Contractor shall undertake any remedial action as required to relieve the stress on the pipe and restore the cross section.

Following installation, the first four feet of the new carrier pipe shall be cut-off and inspected as to cuts and gouges. All cuts and gouges shall be less than the maximum allowed by the pipe manufacturer.

C. Air Test
The pipe shall be tested with low pressure air in accordance with the requirements of Section 02735 Sanitary Sewer System Testing and Cleaning.

If the pipe fails the air test, the Contractor shall locate the source(s) of the leak and repair the defect(s). The pipe shall then be retested until a satisfactory result is obtained.

Despite any previous testing, any leaks developed before the end of the 1-year guarantee period shall be expeditiously repaired by the contractor at no expense to the town.

3.10 POINT REPAIRS AFTER INSTALLATION
A. TV inspection shall be performed after hydraulic cleaning has been completed and shall conform to the provisions in Section 02736, Closed Circuit Television (CCTV) Inspection of Sanitary Sewer System. Construction deficiencies considered in need of correction prior to acceptance of the work are stated in Section 15050 General Piping.

3.11 AS-BUILT INFORMATION
A.

Submit As-Built bore logs.

Submit an as-built survey of the pilot hole within two (2) work days of completion of the pilot hole.

C. Submit as-built drawings showing plan and profile views of the installed pipeline, correctly referenced to project benchmarks, and major site features. The actual depths and horizontal offset of installed sanitary sewer lines shall be shown on the as-built plans at intervals of 20 feet or less. Final profiles with existing pipe depth and other location information shall be shown on the as-built plans. In addition, all pothole excavation locations and data shall be shown on the as-built plans.

SECTION 02643

PIPE REAMING

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**END OF SECTION**
SECTION 02643

PIPE REAMING

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SECTION 02701

PRECAST CONCRETE STRUCTURES
PART 1 - GENERAL

1.01 SUMMARY
A. The Contractor shall furnish and install all prefabricated manholes, and other structures, complete with grade rings, frames, covers, pipe connections, preformed joint sealant, and cast-in-place bases, and any other necessary appurtenances, in accordance with the requirements of the Contract Documents.

B. Related Sections:

1. 2.

SECTION 02200, EARTHWORK
SECTION 02735, SANITARY SEWER SYSTEM TESTING AND

CLEANING

3. 4.

5. SECTION 03200, CONCRETE REINFORCEMENT
SECTION 03300, CAST-IN-PLACE CONCRETE
SECTION 05541, MANHOLE FRAMES AND COVERS

1.02 REFERENCE
American Society for Testing and Materials (ASTM):

ASTM C150 - Standard Specification for Portland Cement.

ASTM D3212 - Standard Specification for Drain and Sewer Plastic Pipes Using Elastomeric Seals
C. ASTM C478 – Standard Specification for Precast Reinforced Concrete Manhole Sections.

1.03 SUBMITTAL
Furnish, in accordance with the Contract Documents, complete Shop Drawings for all precast manhole sections, sewer inlets, coatings, and manhole appurtenances for review by the Engineer.

1.04 QUALITY ASSURANCE
After installation, the Contractor shall demonstrate that all manholes, drainage inlets, and other precast concrete structures have been properly installed, level, with tight joints, at the correct elevations and orientations, and that the backfilling has been carried out in accordance with the Contract Documents. All manholes shall be tested in accordance with Section 02735 of the Contract Documents.

SECTION 02701

PRECAST CONCRETE STRUCTURES

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PART 2 - PRODUCTS

2.01 CONCRETE
A.

Precast concrete sections, channel and base shall be in accordance with ASTM C478.

If applicable, concrete for cast-in-place concrete manhole bases shall be as specified in Section 03300 Cast-In-Place Concrete.

2.02 REINFORCING
A.

Reinforcement for precast concrete shall be accordance with ASTM C478.

If applicable, reinforcement for cast-in-place concrete manhole bases shall be as specified in the Section 03200 Concrete Reinforcement and City Standard Detail No. 11 for Standard Manhole.

2.03 MANHOLE FRAMES AND COVERS
Manhole frames and covers shall be as specified in Section 05541 Manhole Frames and Covers.

2.04 MATERIALS
A. Precast Concrete Sections: Manholes, drainage inlets, and other precast concrete structures, shall be constructed of precast concrete sections and shall conform to ASTM C478 and the Contract Documents.

B. Precast concrete sections shall be manufactured by a process that will produce a dense, homogeneous concrete of first quality. The sections shall be steel reinforced and have a minimum wall thickness of four (4) inches. Cement used in manufacturing the sections shall be Type V, Portland cement, as specified in ASTM C150. Precast concrete sections, cones, and grade rings shall be joined using preformed joint sealant only. Use of mortar will not be allowed.

1. Manhole Manufacturers: Oldcastle Infrastructure, Forterra, or approved equal, Sacramento, California.

2. Preformed Manhole Joint Sealant Material: Ram-Nek, Con-seal CS-102, or approved equal.

Castings: Castings for manhole frames and covers and drainage inlet frames and grates shall conform to Contract Documents.

Concrete Waterproofing Sealant: Concrete waterproofing compound shall be applied to the interior and exterior of the manhole shaft and grade rings prior to backfill. Sealant material shall be Tegaproof, Xypex, Bituminous material, or equal. If bituminous material is used, it will only be allowed for exterior coating. Interior material shall be light color.

E. Corrosion Protection Coating: Manhole shaft and grade rings shall be coated with a 100 percent solids epoxy mortar coating to protect the concrete from corrosion caused by hydrogen sulfide. The coating shall be Hydro-pox 212 and Hydro-pox 251 (primer) as manufactured by Con-Tech of California, (209) 941-8324 or approved equal.

SECTION 02701

PRECAST CONCRETE STRUCTURES

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F. Pipe-to-manhole connectors for pre-cast bases shall be watertight pipe connections per manufacturer’s recommendation. When additional field connections or corrections are required, connection shall be made using applicable sanded manhole adapters and non- shrink grout as shown on the Contract Documents.

Interior or exterior drop connections shall be as specified in the Contract Drawings.

Manhole base shall be pre-cast or cast-in-place as specified in the Contract Documents.

All manholes with precast concrete bases and channels shall have inverts to match the adjoining pipes. Contractor shall verify existing conditions including inlet and outlet direction and elevations prior to ordering the precast bases.

2.05 DESIGN LOADS
A. Vertical Loads: Design all precast manhole rings and accessories to support an AASHTO H-20 truck loading, in addition to soil weight above sloping ring sections and the dead load of all material supported above.

B. Lateral Loads: Lateral loads shall be as dictated by the following formula or the geotechnical report requirements, whichever are more stringent.

1. Operating: 95 x H (psf) triangular equivalent fluid pressure for dead load plus a live load surcharge from an H-20 truck, including impact.

2. 3.

Seismic: 23 x H2 (psf) uniform pressure distribution.

Where H = depth below finished grade.

PART 3 - EXECUTION

3.01 WORKMANSHIP
A. Manholes shall be sound watertight structures, constructed as shown on the Contract Documents. The type of manhole and its location is to be as shown on the Contract Documents. The manhole shall be constructed to the rim elevations shown on the Contract Documents. In paved areas, the Contractor shall set the manhole rim after backfill and site settlement to match the proposed finish pavement elevation based on pavement restoration and pavement overlay requirements, if applicable.

B. Manhole Protection:

1. Particular care must be taken to protect new and existing manholes from damage and to keep rock, dirt, or debris from entering the sewer.

2. On new manholes, or manholes that have had frame and cover removed, a steel cover of adequate strength, close fitted and well secured, shall be installed over the manhole opening until the frame and cover are permanently installed.

SECTION 02701

PRECAST CONCRETE STRUCTURES

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3. Ground or surface water shall not be allowed to drain into or be discharged to existing sewers. Temporary watertight plugs shall be installed by the Contractor to affect this protection.

4. Protective measures to prevent construction debris from entering the sewer system, such as “false bottoms” placed in the manhole, shall be installed when construction work is being performed at manholes that are in service.

Manhole Base:

The manhole base shall be pre-cast or cast-in-place as specified in the Contract Documents.

Precast Manhole Shaft:

1. The manhole shaft shall be composed of precast concrete sections in accordance with the Contract Documents and in conformance to the requirements of ASTM C478.

2. 3.

4. The cone section shall be concentric unless eccentric is specified elsewhere or directed by the Engineer and placed as shown on the Contract Documents.

Precast concrete sections shall be set so as to be vertical, with sections in true alignment.

Joints between precast concrete sections shall have a preformed manhole joint sealant installed between the tongue and groove joint to make a watertight joint.

Joint sealant sections shall be overlapped a minimum of 3 inches. The joint of the previously set section shall be covered with sealing compound primer and joint sealant before the next section is placed. After the shaft is in place, the joint shall be trimmed smooth with a sharp tool on the inside of the manhole.

5. 6.

Manhole sections shall be ordered without rungs.

The grade rings installed height shall not exceed 12 inches, and a minimum number of grade rings shall be used.

7. After installation of concrete manholes, the Contractor shall apply concrete waterproofing sealant to the interior and exterior of manhole shafts and grade rings. Surface preparation and application shall be performed as recommended by the coating manufacturer. The Contractor shall allow sufficient time for sealant to cure, prior to backfill, in accordance with the manufacturer’s written instructions.

8. Interior of manhole shaft and grade rings shall be coated with a corrosion protection coating to protect the concrete from corrosion caused by hydrogen sulfide. Surface preparation and application shall be performed as recommended by the coating manufacturer.

E. Manhole Collar:

1. Unless otherwise specified by the Engineer, a concrete collar shall be poured around the frame and shaft so as to securely anchor the frame to the shaft. The SECTION 02701

PRECAST CONCRETE STRUCTURES

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collar shall extend to the bottom of the lowest grade ring, as shown on the Contract Documents.

2. Concrete shall be poured around the manhole frame and shaft as shown on the Contract Documents.

F. Pipe Connections

1. 2.

3. Connections to manufactured, precast items shall be made with watertight pipe connectors per manufacturer’s recommendation. Connections shall be at the base or wall of pre-cast manholes as shown in the Contract Documents.

When additional field connections or corrections are required, connection shall be made using applicable sanded manhole adapters and non-shrink grout as shown on the Contract Documents.

Interior or exterior drop connections shall be installed as specified in the Contract Drawings.

I. All precast concrete structures shall be installed in strict conformance with the manufacturer’s written instructions, on a well-compacted foundation, as specified in the Contract Documents.

J. Paving around the manhole shall be in accordance with the Contract Documents.

K. Openings in manholes shall be protected from construction loads, debris, and unauthorized entry.

3.02 TESTING
All pre-cast concrete manholes shall be tested in accordance with Section 02735 of the Contract Documents.
**END OF SECTION**
SECTION 02701

PRECAST CONCRETE STRUCTURES

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SECTION 02735

SANITARY SEWER SYSTEM TESTING AND CLEANING
PART 1 - GENERAL

1.01 SUMMARY
A.

Contractor shall perform all pipeline flushing and testing, complete, for sanitary sewerage system in accordance with the Contract Documents.

Contractor shall be responsible for obtaining, conveying, and properly disposing of water used in the testing operations.

Related Sections

1. 2.

3. SECTION 02736, CCTV INSPECTION OF SANITARY SEWER SYSTEM SECTION 15050, GENERAL PIPING
SECTION 02701 PRECAST CONCRETE STRUCTURES

1.02 REFERENCES
A. City of San Carlos
Standard Specifications and Details (latest edition)
American Society for Testing and Materials (ASTM)B.

ASTM C1244 – Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfill
C. Uni-Bell PVC Pipe Association
Recommended Practice for Low-Pressure Air Testing of Installed Sewer Pipe, current Uni-B-6 pamphlet

1.03 CONTRACTOR SUBMITTALS
A. In accordance with the Contract Documents, a testing plan and schedule shall be submitted in writing to the Engineer for approval a minimum of seventy-two (72) hours before testing is to start.

B. Calibration certifications for test gauges used on this project shall be submitted.

PART 2 - PRODUCTS
SECTION 02735

SANITARY SEWER SYSTEM TESTING AND CLEANING

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2.01 MATERIALS REQUIREMENTS
A. Furnish compressors, piping, hosing, valves, test gages, test plugs, joint test apparatus, power, stopwatch, and personnel required for conducting the test.

Test gauge shall be 0 to 15 psi with max 0.5 psi increments.

Furnish a valved connection for the City to attach a gauge. The Engineer will witness the test.

Provide temporary valves, bulkheads, plugs, and other pressure-testing equipment materials subject to the Engineer’s review.

No materials shall be used which would be injurious to the public, personnel, adjacent improvements, nor the pipeline structure and future function. Air test gauges shall be laboratory-calibrated test gauges and shall have been recalibrated by a certified laboratory, within three (3) months, prior to the leakage test for this project. Any necessary recalibration for gauges that do not have calibration certificates within three (3) months of leakage testing shall be done at the Contractor’s expense.

PART 3 - EXECUTION

3.01 GENERAL
A. All pipelines shall be cleaned by balling, flushing, and/or other approved methods prior to testing. Debris shall be removed from the downstream manhole until all pipelines are clean.

B. All testing operations shall be performed in the presence of the Engineer.

3.02 TESTING OF PIPING
A. General: All gravity sewer pipes and service laterals shall be tested for exfiltration and or infiltration and deflection, as specified. All manholes shall be tested for leakage, as specified. Manholes shall be tested prior to backfill placement, whereas all pipe shall be backfilled prior to testing. All leakage tests shall be completed and approved prior to placing of permanent resurfacing. When leakage or infiltration exceeds the amount allowed by the Contract Documents, the Contractor at its expense, shall locate the leaks, submit a repair procedure(s) for the Engineer’s review, and make the necessary repairs or replacements in accordance with the Contract Documents to reduce the leakage or infiltration to the specified limits. Any individually detectable leaks shall be repaired, regardless of the results of the tests. Pipe joint leakage repair solely with cement grout will not be permitted.

B. Leakage Tests

1. 2.

The Contractor shall, in the presence of the Engineer, test the water tightness of all main sewer lines in accordance Contract Documents. The test will be made between each adjacent structure.

The Contractor shall use the Air Test as described below.

SECTION 02735

SANITARY SEWER SYSTEM TESTING AND CLEANING

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a. When Tested:
1) The pressure test shall be made after the backfill is satisfactorily compacted.

3. The test, as noted in item 1 or 2, above, is considered the "official test." However, preliminary testing is strongly recommended and may be conducted by the Contractor at any time prior to the "official test." a. AIR TEST REQUIREMENTS: A sudden expulsion of a poorly installed plug during air testing can be dangerous. The Contractor shall meet the following requirements:
1)
2)
3)
The Contractor shall be fully responsible and take all
precautions necessary to ensure the safety of their workers.

All plugs shall be adequately braced to support the full load developed.

No workers shall be allowed in the excavation or manhole while the line is under pressure. The Contractor shall make provisions for reading the pressure at the ground surface and for safely releasing the air pressure without entering the manhole or excavation.
4)
5)
Each section of sewer main shall be tested between successive manholes by plugging and bracing all openings in the sewer lines. If any leaks are found, the air pressure shall be released, the leaks eliminated, and the test procedure started over again.

The final leakage test of the sewer main line shall be
conducted in the presence of the Engineer.

4. Leakage Test Acceptance
a. Where the actual leakage exceeds the allowable, the Contractor shall determine the cause and remedy it before the pipeline is accepted. For the purpose of this subarticle, a section of pipeline is defined as the length of pipe between successive manholes or special structures. b.
c.
d.

The Contractor shall correct any visible leaks in the pipeline or manholes.

The Contractor shall dispose of all water so as not to cause a public nuisance and as acceptable to the Engineer.

If any cleanup activities or fines ensue from a failed leakage test, any associates costs incurred by the City will be deducted from payment to the Contractor.
e. In no case shall the Contractor place the newly constructed sewer in operation without the approval of the Engineer.

3.03 TESTING OF MANHOLES
SECTION 02735

SANITARY SEWER SYSTEM TESTING AND CLEANING

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Vacuum Testing: All new manholes shall be vacuum tested prior to backfill in accordance with ASTM C1244 and these Contract Documents. Vacuum test procedures and requirements shall be as follows:

A. After completion of the manhole barrels but prior to backfilling and grade ring installation, all openings in the manholes shall be sealed with plugs and a rubber ring "donut" type plug inserted inside the opening of the cone.

B. A small vacuum pump shall be attached to a hose connected to the plug and 10 inches Hg of vacuum applied.

The vacuum is permitted to stabilize for 1 minute; then the test shall begin.

The time shall be measured for the vacuum to drop to 9 inches Hg. The manhole must maintain vacuum such that no greater than 1-inch Hg of vacuum is lost during the specified test period.

E. The specified test period is as follows:

Test Period Based On Manhole Size (seconds)
Manhole Depth 48-inch
Diameter
20 60-inch
Diameter
26 72-inch
diameter
33 (Feet)
Up to 8
10 25 33 41
12 30 39 49
F. The manhole is acceptable if the time for the vacuum reading to drop from 10 inches Hg to 9 inches Hg is greater than the test period. Manholes that fail the test shall be patched as required and retested.

A vacuum regulator shall be provided on the vacuum pump such that no greater than

10.5 inches Hg vacuum can be applied to the manhole during the test.

All manholes that do not meet the leakage test, or are unsatisfactory from visual inspection, shall be repaired to the satisfaction of the Engineer and retested at no additional cost to the Owner.

3.04 NOT USED

3.05 CLEANING
A. After the sewers have satisfactorily passed the tests required in this Section, and before CCTV inspection required in the Contract Documents, the Contractor, in the presence of the Engineer, shall clean each section of the sewer in the following manner after placing a wire screen with a one-quarter of an inch (1/4”) mesh or smaller in the downstream manhole to catch debris and to prevent any debris from being washed into the existing sewer system.

B. Hydraulic Cleaning

1. All hydraulic cleaning equipment shall be truck mounted. Water jet cleaning equipment shall include a water tank, auxiliary engine, pumps, and hydraulically driven hose reel.

SECTION 02735

SANITARY SEWER SYSTEM TESTING AND CLEANING

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2. Cleaning shall remove all grit, sludge, rocks, debris, roots, grease accumulations, and obstructions from the sewer. Sewer cleaning method shall be water jetting.

C. Debris Removal

1. During cleaning operations, the Contractor shall provide a means of catching and removing the dislodged debris conveyed downstream with the sewer flow.

The method chosen shall not allow the transport of debris to downstream sewer reaches.

2. All debris removed from the sewer may be stored until the day's end, whereupon the Contractor shall be responsible for its proper disposal off site.

D. Recleaning
If television inspection indicates that the sewer is not adequately cleaned, the Contractor shall remove all equipment or materials from the sewer and reclean the sewer at no additional expense to the City.

3.06 DISCHARGE OF CLEANING WATER
Water used for cleaning the lines may be discharged to the existing sewer system after screening and removal of solids, and as approved by the Engineer. **END OF SECTION**
SECTION 02735

SANITARY SEWER SYSTEM TESTING AND CLEANING

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SECTION 02736

CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION OF SANITARY SEWER SYSTEM
PART 1 – GENERAL

1.01 SUMMARY
A. All new sewers, structures, manholes, and new laterals installed as shown in the Contract Documents shall be visually inspected by means of closed-circuit television (CCTV) and video recorded after testing and cleaning activities.

B. The inspections shall be completed one sewer section at a time. A section may be from one manhole to another or a section may be an individual sewer lateral.

Flows shall be controlled as specified herein while the inspection work is in progress.

Related Sections:

1. SECTION 02641, SANITARY SEWER REHABILITATION USING CIPP METHOD

2. 3.

4. 5.

SECTION 02642, PIPE BURSTING
SECTION 02643, PIPE REAMING
SECTION 02735, SANITARY SEWER SYSTEM TESTING
SECTION 15050, GENERAL PIPING

1.02 REFERENCES
Not Used.

1.03 SUBMITTALS
A. Furnish one color video recording on DVD, with audio, for each section of main sewer and building sewer inspected and prints of all photographs taken during the inspection.

The recording shall show the date the work was performed and the location / street name and City designation of the entry manhole.

The recording shall indicate cumulative footage from the entry manhole, as verified by the camera-mounted transmitter and receiver.

SECTION 02736

CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION OF

SANITARY SEWER SYSTEM

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C. Furnish a report and photos indicating the location of all laterals and connections encountered the location of any breaks, obstructions, offsets, high points, sags or other major defects, and the condition of manholes.

Digital video files shall follow City naming convention:
 Upstream Manhole ID_Downstream Manhole ID-yymmdd-D.mgp Where:
o Upstream/Downstream Manhole ID
o yymmdd = date of inspection
o D = camera direction (D or U)
Example:

A downstream inspection from AH/51 to AH/52 conducted on August 13, 2010 shall be named, AH51_AH52-100813-D.mpg.

D. Pre and post video reports shall include rating for sag severity:
0 = less than 1 inch
1 = 1 inch – 1/4 pipe
2 = 1/4 – 1/2 pipe
3= > 1/2 pipe
E.

All reports shall be neatly typed.

Post construction video reports shall be submitted for review within two weeks after completion of each section.

1.04 SAFETY
Have a documented safety program in place which meets all applicable occupational safety and health standard, rules, regulations and orders established by the State of California.

1.05 EXPERIENCE
A.

The person conducting the CCTV inspection shall have a minimum of five years’ experience in the television inspection of sanitary sewers.

The recordings shall be reviewed by a person having a minimum of five years’ experience in evaluating and repairing problems in sanitary sewers.

SECTION 02736

CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION OF

SANITARY SEWER SYSTEM

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PART 2 – PRODUCTS

2.01 TELEVISION CAMERAS
A.

The television camera used for inspection work shall be color format, specifically designed and constructed for use in sewers. Pan and tilt camera shall pan 275 degrees and rotate 360 degrees for close up viewing.

Lighting and camera quality shall allow a clear, in-focus picture of the entire periphery of the pipe for a minimum distance of six feet.

The camera shall have a 350 line per inch, or greater, resolution.

The camera shall be operative under 100 percent humidity conditions.

Cameras for use in sewers 8-inches in diameter and larger shall be of the “articulating head” type to allow laterals and defects to be viewed directly.

F. To ensure acceptable picture quality under all possible conditions that may be encountered during the inspection, a variable intensity control for lighting, and a remote adjustment for camera focus, shall be provided for the operator.

The camera, television monitor, and other components of the video system shall be capable of producing a color picture of quality adequate to identify major defects and locate laterals accurately.

Laterals shall be inspected via a lateral launch camera. When laterals are inaccessible via a lateral launch camera, the Contractor shall notify the Engineer and utilize a push camera from an existing clean out, if available, or lateral reconnection / proposed cleanout access pits.

I. A push camera with color display shall be available for use at all times during construction to inspect laterals or otherwise inaccessible pipelines.

2.02 CLEANING EQUIPMENT
Cleaning may be accomplished by jetting; however, contractor shall have mechanical cleaning equipment available for use at all times to remove hardened deposits or large objects.

PART 3 - EXECUTION

3.01 REQUIRED FREQUENCY OF CCTV INSPECTION
A. All existing laterals from the sewer to the cleanout/property line prior to start of construction.

B. The existing sewer to be replaced by pipe bursting, pipe reaming or rehabilitated by CIPP as shown on the Contract Documents.

SECTION 02736

CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION OF

SANITARY SEWER SYSTEM

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C. After open cut construction is complete, after final air or leakage testing, cleaning, and after the "subbase" or "base" material portion of the paving is satisfactorily compacted but before pavement is installed.

After pipe burst, pipe ream or CIPP construction is complete and after final air or leakage testing and cleaning.

New laterals shall be inspected as directed by the Engineer except for backyard laterals.

3.02 CLEAN
“Clean” in this specification is defined as the removal of all accumulations including sludge, dirt, sand, rocks, asphalt, concrete, grease, roots and any other items that might be found in the sewer.

3.03 FLOW CONTROL
General:

A. When sewer line depth of flow at the upstream manhole of the section being inspected is above the maximum allowable depth shown under “Allowable Depth of Flow,” the flow shall be reduced by operation of pump stations, temporarily plugging or blocking of the flow, or by pumping and bypassing of the flow.

Allowable Depth of Flow – No flow shall be allowed from the upstream manhole into the sewer being televised.

Plugging or Blocking:

1. A sewer plug shall be inserted into the line upstream of the section being inspected.

2. The plug shall be so designed that all or any portion of the sewage can be released.

3. 4.

During CCTV inspection, flow shall be reduced to the limits specified herein.

After the work has been completed, flow shall be restored to normal.

D. Flow Control Precautions:

1. 2.

When flow in a sewer is plugged, blocked, or bypassed, precautions shall be taken to protect all sewers from damage that might result from sewer surcharging.

Precautions shall also be taken to ensure that flow control operations do not cause flooding or damage to public or private property being served by the sewers involved.

SECTION 02736

CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION OF

SANITARY SEWER SYSTEM

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3.04 INSPECTION PROCEDURES
A.

The camera shall be moved through the line in either direction at a moderate rate, stopping when necessary to permit proper documentation of the condition of the sewer.

In no event will the television camera be pulled at a speed greater than 30 feet per minute.

Manual winches, power winches, TV cable, and power rewinds or other devices that do not obstruct the camera view or interfere with proper documentation of the sewer conditions shall be used to move the camera through the sewer line.

D. When manually operated winches are used to pull the television camera through the line, telephones or other suitable means of communication shall be set up between the two manholes of the section being inspected to ensure good communications between members of the crew.

The importance of accurate distance measurements is emphasized.

Measurement for location of defects shall be made by means of a camera-mounted transmitter and aboveground receiver.

Marking on the cable, which requires interpolation for depth of the manhole, will not be permitted.

To establish criteria for video picture quality to be maintained throughout the project, the Contractor shall furnish a recording of a previous sewer inspection that meets these specifications for quality. This recording shall become the property of the City. It will be used as a standard to judge the acceptability of recordings produced on this project.

The audio portion of the inspection report, recorded at the time of inspection, shall be intelligible in its entirety. The information contained on the audio recording shall include (1) the location of the sewer, (2) the City’s designation for the manholes involved, (3) the direction of travel, (4) a description of conditions in the sewer as they are encountered, and (5) the location and entrance condition of service laterals.

The video shall include legible on-screen continuous indications of the following items during the entire inspection (1) date and time of inspection, (2) upstream and downstream manhole designations and direction of travel related to flow, (3) current location footage, and (4) sewer diameter.

3.05 DEFICIENCIES
Deficiencies in need of correction prior to acceptance of work shall conform to the requirements of section 15050, General Piping.

SECTION 02736

CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION OF

SANITARY SEWER SYSTEM

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3.06 PAYMENT FOR REPAIR OF DEFICIENCIES AND ADDITIONAL INSPECTION A. Any portion of the sewer system found not to conform with these Specifications shall be corrected by the Contractor at no additional cost to the City. Sewers so corrected shall be re-inspected by Contractor in accordance with this Section at no additional cost to the City.

B. Price of CCTV inspection shall be included in the unit price bid for pipe, structures, and manholes and no additional payment shall be made therefor. **END OF SECTION**
SECTION 02736

CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION OF

SANITARY SEWER SYSTEM

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SECTION 02739

BUILDING SEWER (LATERAL) CONSTRUCTION AND REINSTATEMENT PART 1 - GENERAL

1.01 SUMMARY
A. The Contractor shall be responsible for locating and connecting to existing building sewers (laterals).

B. This work will include replacing portions of the existing building sewer and extending the existing building sewer to connect with the new or rehabilitated main sewer installed under this Contract.

The Contractor shall provide written notification of work activities and sewer outages to all local users in accordance with the project Technical Specifications.

Sewer lateral connections shall be reestablished to each user as quickly as possible and shall not exceed eight (8) hours from the initial disconnection of the building sewer from the sewer main or from the initial service interruption to the user.

All existing laterals shall be reconnected to the rehabilitated, replaced or newly installed sewer main. Diameters of laterals shall be confirmed by the Contractor and replaced in-kind, unless directed otherwise by the Engineer.

Related Sections:

1. 2.

3. 4.

5. SECTION 01720, SEWER OUTAGE NOTIFICATIONS
SECTION 02200, EARTHWORK
SECTION 02145, SEWAGE FLOW CONTROL
SECTION 02642, PIPE BURSTING
SECTION 15050, GENERAL PIPING

1.02 REFERENCES
City of San Carlos:

Standard Specifications and Details (latest edition)
SECTION 02739

BUILDING SEWER (LATERAL) CONSTRUCTION AND REINSTATEMENT

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Technical Specifications
Page TS-135
PART 2 - PRODUCTS

2.01 SUBMITTALS
Submit, in accordance with the Contract Documents, installation instructions and details of all pipe, joints, fittings, metallic pipeline marking tape, and appurtenances to be used in the work including the following.

Catalog cuts showing all piping, cleanouts, and fittings.

Connection details for all building sewers and existing systems.

PART 3 - EXECUTION
A. Sewer laterals to be replaced shall be video inspected prior to construction. Condition of lateral shall be coordinated with the Engineer. Laterals determined to be in acceptable condition shall remain in place and be reconnected to the new sewer main.

Laterals determined to be in unacceptable condition shall be replaced as shown on the drawings.

B. Contractor shall construct new sewer lateral from new main to a new cleanout at the property line, per the Contract Documents. Private building sewers currently in service shall be connected to the sewer lateral. The excavation process shall be completed by mechanical means as defined in the Contract Documents and by hand digging as required.

The Contractor may construct sewer laterals in accordance with City Standard Details.

Connection to existing service laterals shall be made after the existing sewer main has been replaced and successfully tested. It is the Contractor’s responsibility to make sure that all service connections are reconnected.

E. Reconnection of existing services to the sanitary system shall be completed as described below:

All building sewers shall be connected to the sanitary sewer main line at a wye (PVC or HDPE pipe) installed on the main line. The connection of the new building sewer pipe to the existing building sewer will be made with suitable adapters or couplings per Section 15050, General Piping.

F. It is the Contractor’s responsibility to locate building sewers and to determine lateral sizes, and whether building sewers are live or have been abandoned.

G. All efforts have been made to show existing service building sewers on the drawings, however, the City cannot ensure that there may be others not shown or shown in other locations. Some project sewer line videos are available on request to aid the Contractor in locating all building sewers; however, the City does not guarantee the completeness or accuracy of the video logs. Sewers to be replaced shall be video inspected at the Contractor’s expense prior to construction.

SECTION 02739

BUILDING SEWER (LATERAL) CONSTRUCTION AND REINSTATEMENT

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H. The existing building sewer connections to the main sewer may be encased in mortar, concrete or reinforced concrete. There will be no additional compensation for demolition of this material.

I. When the main is to be rehabilitated with cured-in-place pipe (CIPP), if the lateral in poor condition and requires replacement, the lateral shall be replaced prior to rehabilitation of the main.
**END OF SECTION**
SECTION 02739

BUILDING SEWER (LATERAL) CONSTRUCTION AND REINSTATEMENT

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SECTION 02765

TRAFFIC STRIPES AND PAVEMENT MARKINGS
PART 1 – GENERAL

1.01 DESCRIPTION
A. The Contractor shall furnish all tools, equipment, materials, and supplies and shall perform all labor required to apply traffic stripes and pavement markings at all locations where existing striping is disturbed or removed or where designated by the Engineer, and as specified in these Specifications.

B. All existing traffic stripes and pavement markings shall be replaced in kind.

Equipment, mixing, surface preparation, application, and tolerances for painting traffic stripes and pavement markings shall conform to Section 81-3 ad 84 of the State of California, Department of Transportation Standard Specifications, except as amended by these Technical Specifications.

Pavement markers shall be placed as they existed prior to trenching or application of the asphalt concrete overlay. All traffic stripes, pavement markings (legends) and pavement markers covered by any asphalt concrete overlay shall be replaced by the Contractor.

Protection from Damage: All pavement markers in place (outside the limits of the work) at the time of the asphalt overlay shall be protected from damage and shall be clean and undamaged after completion of asphalt concrete overlay. Any damaged pavement markers shall be replaced in accordance with Section 85 of the State Standard Specifications at the Contractor’s expense.

1.02 REFERENCE
A. Related Sections

1. SECTION 02800, TRAFFIC CONTROL

2. SECTION 02768, TEMPORARY PAVEMENT MARKINGS
B.

State Standard Plans and Specifications (latest edition) California Manuals of Uniform Traffic Control Devices

1.03 SUBMITTALS
A.

Specifications of primer to be used for application.

Manufacturer’s recommendation for type of epoxy to be used when installing markers.

SECTION 02765

TRAFFIC STRIPES AND PAVEMENT MARKINGS

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Technical Specifications
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C. Samples of each thermoplastic pavement marking.

PART 2 – PRODUCTS

2.01 TRAFFIC STRIPES, PAVEMENT MARKINGS, (LEGENDS) AND PAVEMENT

MARKERS
A. Pavement markers shall conform to the provisions in Section 81-3, Pavement Markers, of the State Standard Specifications and these Technical Specifications.

B. Thermoplastic materials shall conform to the provisions in 84-2.02, “Materials,” of the State Specifications and these special provisions. The thermoplastic material shall be PTH-02SPRAY, PTH-02HYDRO or PTH-02ALKYD.

C. A maximum 4 percent by weight, of the total thermoplastic material mixture may be additives passing the 100-mesh sieve. Pigment, other than titanium dioxide or lead chromate, shall be calcium carbonate.

D. Yellow thermoplastic material shall closely match Color No. 13538 of Federal Standard No. 595a, after being heated for 4 hours at 425 degrees F, and then cooled to 77 degrees F.

Thermoplastic material for traffic stripes shall be applied at a minimum thickness of

0.100 inch.

Glass beads to be applied to the surface of the molten thermoplastic materials shall conform to the requirements of State Specification 8010-004 (Type II), or AASHTO Designation: M247 (Type 1). Copies of State Specification 8010-004 (Type II) are available at the Transportation Laboratory located in Sacramento, California.

PART 3 – EXECUTION

3.01 CONSTRUCTION EQUIPMENT
A. Use equipment manufactured for pavement marking. Use workers experienced in operating such equipment.

Locate bead applicator directly behind and synchronized with marking applicator.

For thermoplastic paint materials, use equipment that is designed to agitate the paint to prevent scorching, discoloration, or excessive high temperatures.

3.02 PREPARATION
A.

Broom or flush the surface to remove dirt, loose stones, or other foreign material immediately prior to applying.

Begin pavement painting and marking operations not later than 24 hours after receipt of written order by Engineer.

Apply all materials in accordance with manufacturer’s and Engineer’s directions.

SECTION 02765

TRAFFIC STRIPES AND PAVEMENT MARKINGS

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Technical Specifications
Page TS-139

3.03 THERMOPLASTIC PAINT STRIPING
A.

Clean off dirt, glaze, and grease before prestriping.

Do not use materials which produce fumes that are toxic, obnoxious, or injurious to persons or property.

C. Apply so that finish lines have well-defined edges free of waviness.

3.04 WORDS AND OTHER MARKINGS
When no longer required for the direction of public traffic, as determined by the City, the temporary traffic stripe and pavement marking tape and temporary pavement markers, applied to existing pavement, the top layer of new pavements or any other paved surface where the previously placed pavement delineation conflicts with the new traffic pattern, shall be removed and disposed of in accordance with the provisions of Section 7-1.13, Disposal of Materials Outside the Highway Right-of-way, of the State Standard Specifications, and all lines and marks used to establish the alignment for the temporary traffic stripes, pavement markings and temporary pavement markers shall be removed from the pavement.

3.05 RAISED PAVEMENT MARKERS
All raised pavement markers, removed or destroyed during construction, including blue markers for fire hydrants, shall be replaced per Caltrans standards and manufacturers recommendations.

3.06 PLACEMENT OF STRIPING, PAVEMENT MARKINGS, AND RAISED PAVEMENT

MARKERS
A. Permanent traffic stripes and pavement markings shall be installed no sooner than two (2) days, and no later than fourteen (14) days after paving.

B. Raised pavement markers shall be installed no sooner than seven (7) days, and no later than fourteen (14) days after paving.
**END OF SECTION**
SECTION 02765

TRAFFIC STRIPES AND PAVEMENT MARKINGS

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SECTION 02768

TEMPORARY PAVEMENT MARKINGS
PART 1 - GENERAL

1.01 DESCRIPTION
A. The Contractor shall furnish all tools, equipment, materials, and supplies and shall perform all labor required to apply temporary pavement markings.

B. Lane line or centerline pavement delineation shall be provided at all times for travel lanes open to public traffic. Whenever the work causes obliteration of pavement delineation, temporary pavement delineation or permanent traffic stripes shall be in place prior to opening the traveled way to public traffic.

The Contractor shall perform all work necessary to establish satisfactory alignment for temporary pavement delineation.

Temporary pavement markings that are damaged from any cause during the progress of the work shall be immediately repaired or replaced by the Contractor at his/her expense.

1.02 REFERENCES
A. Related Sections

1. SECTION 02800, TRAFFIC CONTROL

2. SECTION 02765, TRAFFIC STRIPES AND PAVEMENT MARKINGS B.

State Standard Plans and Specifications
California Manuals of Uniform Traffic Control Devices
PART 2 - PRODUCTS

2.01 TEMPORARY TRAFFIC STRIPE AND PAVEMENT MARKING TAPE A.

Removable traffic stripe tape shall be the temporary removable type traffic stripe tape.

Except where existing pavements are to remain in place or on the top layer of new pavements, the Contractor may use painted traffic stripes and pavement markings for temporary traffic stripe and temporary pavement marking. Painted traffic stripes and pavement markings, if used, shall conform to 84-3, Painted Traffic Stripes and Pavement Markings, of the State Standard Specifications, except for payment and for the number of coats of paint which shall be, at the option of the Contractor, either one or two coats.

SECTION 02768

TEMPORARY PAVEMENT MARKINGS

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2.02 TEMPORARY PAVEMENT MARKERS
A. The use of temporary pavement markers shall conform to the traffic control plans and as determined by the City.

Temporary pavement markers shall be, one of the temporary reflective pavement markers for long-term day/night use (6 months or less).

Reflective pavement markers conforming to the requirements of these Technical Specifications may be used in place of temporary reflective pavement markers for long- term day/night use (6 months or less) except at locations to simulate patterns of broken traffic stripe.

2.03 TEMPORARY PAVEMENT DELINEATION
Temporary pavement delineation shall be furnished in accordance with the provisions in Section 12-3.01, General, of the State Standard Specifications and these Technical Specifications.

PART 3 - EXECUTION

3.01 TEMPORARY PAVEMENT MARKING TAPE
Tape shall be applied to a clean dry surface and rolled slowly with a rubber-tired vehicle or roller to ensure complete contact with the pavement surface in accordance with the manufacturer’s recommendations. Installation procedures for application of tape when the air temperature and pavement temperature is less than 50 degrees F shall be approved by the City prior to beginning the installation of tape. Tape shall not be applied over existing stripes or markings. Completed stripes shall be straight on tangent alignments and shall be on a true arc on curved alignments.

3.02 TEMPORARY PAVEMENT MARKERS
A. Temporary pavement markers shall be applied in accordance with the manufacturer’s instructions and shall be cemented to the surfacing with the adhesive recommended by the manufacturer. Epoxy adhesive shall not be used in areas where removal of the pavement markers will be required.

B. Placement of the reflective pavement markers used for temporary pavement markers shall conform to these Technical Specifications except that the waiting period requirements before placing the pavement markers on new asphalt concrete surfacing as specified in Section 85-1.06, "Placement," of the State Standard Specifications shall not apply and epoxy adhesive shall not be used to place pavement markers in areas where removal of the pavement markers will be required.

3.03 TEMPORARY PAVEMENT DELINEATION
A. Temporary pavement delineation shall be placed, maintained, and removed in accordance with the provisions in Section 12-3.01, General, of the State Standard Specifications and these Technical Specifications.

SECTION 02768

TEMPORARY PAVEMENT MARKINGS

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B. Surfaces on which temporary pavement delineation is to be applied shall be cleaned of all dirt and loose material and shall be dry when the pavement delineation is applied. **END OF SECTION**
SECTION 02768

TEMPORARY PAVEMENT MARKINGS

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SECTION 02800

TRAFFIC CONTROL
PART 1 - GENERAL

1.01 SUMMARY
A.

This Section includes requirements for traffic control.

Related Sections:

1. 2.

3. SECTION 02200, EARTHWORK
SECTION 15050, GENERAL PIPING
Article 24, Special Provisions – Traffic Control

1.02 REFERENCES
A. City of San Carlos:

General Provisions. B. Caltrans:

1. 2.

Standard Plans and Standard Specifications (latest edition).

Encroachment Permit.

C. California Manuals of Uniform Traffic Control Devices (CaMUTCD).

1.03 DEFINITIONS
A.

Traffic Control Devices: Signs, signals, markings and other devices placed on or adjacent to a road to regulate, warn or guide traffic.

Traffic Control Measures: Elements of the Traffic Control Plan including traffic control devices, personnel, materials, and equipment used to control traffic through the work Zone.

Traffic Control Plan: A written and drawn plan for handling traffic on a specific roadway through the Work Zone.

Work Zone: A traveled area within the construction used by vehicles, bicyclists and pedestrians.

1.04 TRAFFIC CONTROL REQUIREMENTS
A. Provide and maintain temporary traffic control measures to provide for the safe passage of vehicular and pedestrian traffic through and within the Project site.

SECTION 02800

TRAFFIC CONTROL

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B. Provide and post “Expect Delays” signs at the beginning and end of a street a minimum of seven (7) calendar days prior to beginning construction on that street.

C. Under some circumstances, construction may temporarily prevent access into private driveways. The Traffic Control Plan shall specifically identify these occurrences and provide a plan for minimizing the temporary condition.

1.05 TRAFFIC CONTROL PLAN
A. Prepare and submit detailed Traffic Control Plans to the Engineer for approval. The Traffic Control Plans shall show proposed traffic control measures, signage and other traffic control devices, barricade locations, lane width reductions and lane shutdowns that will be implemented by the Contractor to maintain a safe work site.

Selection of protective devices and directional measures that will be used, including the timing for their use and specific locations, is the responsibility of the Contractor.

Traffic Control Plans shall conform to the City’s temporary Traffic Control Guidelines described in the General Provisions of these Specifications.

The Contractor shall not start work within a Work Zone until the Traffic Control Plans have been accepted by the Engineer.

All traffic control shall conform to California Manuals of Uniform Traffic Control Devices (CaMUTCD) and Article 24 “Traffic Control” of the Special Provisions.

1.06 PUBLIC NOTICE
A. In accordance with Article 24 of the Special Provisions, streets shall not be closed unless authorized by the Engineer in writing at least seventy-two (72) hours prior to the requested date. If street closure is approved, Contractor shall notify the following forty-eight (48) hours prior to the street closure:

1. 2.

3. 4.

5. 6.

All Residents on City Blocks where work will be occurring.

All Businesses on City Blocks where work will be occurring.

City of San Carlos Public Works Department (Project Manager and Inspector).

City of San Carlos Police Department (650) 802-4277.

City of San Carlos Fire Department (650) 780-7400.

City of San Carlos Garbage, Recycling and Tree Trimming Haulers:

Recology San Mateo County (650) 595-3900.

7. 8.

9. San Mateo County Transit District (650) 508 6200.

Affected Schools, noted in the Special Provisions
Others as noted in accordance with the Special Provisions.

SECTION 02800

TRAFFIC CONTROL

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B. If emergency or urgent street closures are required, the Contractor shall immediately notify:

1. 2.

3. City of San Carlos Public Works Department (Project Manager and Inspector).

City of San Carlos Police Department, (650) 802-4277.

City of San Carlos Fire Department, (650) 780-7400.

C. Notify local residents by door hanger at least seventy-two (72) hours in advance of obstructions and inconvenience due to construction activities, including:

1. 2.

3. 4.

Obstruction of private driveways.

Elimination of on-street parking in front of private residences.

Any other similar inconvenience that may impact local residents.

Door hangers shall include City and Contractor contact information and shall be approved by the Engineer prior to use.

1.07 TEMPORARY SIGNS
A. Erect informational signs advising pending work and lane closures four (4) weeks in advance of actual work, as required by the City. Information on the signs shall be readable to both directions of travel.

Erect signs advising of rough road conditions when temporary pavement has been placed, or when plates are in use.

When needed to advise traffic of approaching conditions, Contractor shall use electronic signs with sequential arrow or changeable message.

1. 2.

Electronic sign shall be installed beyond the outside shoulder of the roadway or behind an existing barrier or guardrail.

The sign shall display the entire message within 7.5 seconds.

D. Temporary signs shall be one sided and shall be wooden or metal with tripod supports.

The Contractor shall add sandbags to support legs for ballast.

Signs that will remain in place at night must have reflective florescent orange sheeting.

Changeable message signs and/or arrow boards may be required at any or all locations.

1.08 TEMPORARY BARRICADES
A. Temporary barricades in good condition, as approved by the Engineer, are required to protect vehicles from areas with drop-offs.

B. Use pin-and-loop type concrete barriers conforming to Caltrans Standards.

SECTION 02800

TRAFFIC CONTROL

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C. Wooden Barricades shall follow industry standard with reflective devices and an 8- inch diameter amber flashing light using one, 50-watt, 12-volt, battery operated incandescent lamp. The flash shall be visible for 1,200 feet. Failed bulbs shall be promptly replaced.

1.09 FLAGGERS
A. The Contractor’s flaggers must wear orange, yellow, or yellow-green reflective vests and orange, yellow, yellow-green or white hardhats at all times.

Utilize highly visible STOP/SLOW sign paddles with reflective sheeting.

Utilize portable, self-contained two-way radios when more than one flagger is required for traffic control.

D. Employ properly trained persons that have completed an approved traffic control and flagging course. Traffic control submittal shall include flagman certifications.

PART 2 - PRODUCTS
Not Used.

PART 3 - EXECUTION

3.01 GENERAL
A.

Install, operate and maintain temporary traffic control devices in accordance with the Traffic Control Plan.

Traffic control devices shall be promptly moved as construction progresses and removed when no longer required.

Turn, cover, or remove existing permanent traffic control devices when these devices conflict with approved temporary devices.

3.02 LANE CLOSURES
A. Do not close any lane until the area is signed in accordance with the approved Traffic Control Plan.

B. Two -way traffic shall be maintained whenever possible. When one lane must be closed, one-way traffic must be controlled by a flagger in each direction of traffic at all times.

At the end of each workday, restore conditions to allow two-way traffic. Install temporary paving or cover open excavations with heavy steel trench plates, as appropriate for the conditions, to provide a minimum 11-foot wide traveled roadway in both directions. Provide signs indicating rough road conditions when using temporary pavement.

Do not stop or hold vehicles for more than five (5) minutes.

SECTION 02800

TRAFFIC CONTROL

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E. Allow emergency vehicles immediate passage at all times.

3.03 TEMPORARY BARRICADES
Concrete Barriers shall be installed as follows:

Flare the leading end at a flare rate of 14:1.

When placing concrete barriers, maintain a minimum of 24-inches from face of barrier to edge of traffic lane.

3.04 FLAGGERS
A. Provide flaggers to safely control movement of vehicles and pedestrians around areas disrupted by the Work
B. Flaggers shall be located in positions that provide sufficient time for motorists to respond to the flagger’s instructions, and these positions shall be designated on the traffic control plan.

C. Flaggers shall be paid under the bid item for traffic control and no additional compensation will be allowed.
**END OF SECTION**
SECTION 02800

TRAFFIC CONTROL

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SECTION 02892

TRAFFIC LOOPS
PART 1 – GENERAL

1.01 DESCRIPTION
The Contractor shall furnish all tools, equipment, materials, and supplies and shall perform all labor required for traffic loops, including connecting to control cabinet and providing complete functioning loops.

1.02 RELATED WORK
SECTION 02800, TRAFFIC CONTROL
SECTION 02500, ASPHALT CONCRETE PAVING
PART 2 – PRODUCTS
Not Used.

PART 3 – EXECUTION

3.01 GENERAL
A. All disturbed or removed traffic detector loops shall be replaced new, before the final lift of asphalt concrete is placed. After the final lift of pavement has been placed, the Contractor shall use a wire locator to locate the left turn loops.

All pull boxes shall be inspected and approved prior to pulling any conductors.

The Contractor shall verify the size and percent fill of all detector handholds and stub outs. For all undersized, damaged or missing handholds and stub outs, the Contractor shall install new.

D. The City will verify all loop and home run locations as marked in the field by the Contractor prior to the Contractor cutting the loops or home runs.

3.02 EXISTING TRAFFIC LOOPS
Existing traffic signals and street lighting shall be kept in operation for the benefit of the traveling public during progress of the work. The Contractor shall contact the City 72 hours prior to removal of any existing detector loop or lead-in wire. The City will install appropriate timing in the traffic signal controller prior to the Contractor cutting the existing loops.

SECTION 02892

TRAFFIC LOOPS

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Technical Specifications
Page TS-149

3.03 INSTALLATION
A. Loop detectors for inductive detector loop installation shall conform to the provisions in Section 86-5, “Detectors,” of the State Standard Specifications and these Technical Specifications.

The ends of all unused cables shall be sealed. The ends of all cables shall be sealed prior to being installed into the conduits.

At least six feet of slack shall be provided in the pull box nearest each signal standard, for those conductors terminating in that standard; and three feet of slack shall be provided in each conductor in all other pull boxes.

D. Identification shall be by T&B Ty-Rap Cable Ties; No. TY553M, fastened to the conductors in such a manner that they will not move along the conductors. The flags on the Ty-Rap shall be marked with a Ty-Rap marking pen No. WT 163 M-1 (Black) or approved equal. All phase conductors and director cables shall be labeled by phase designators in the pull boxes nearest their termination, and in the controller cabinet.

Phase conductors shall be labeled with phase designation. Detector cables (street and sign) shall be labeled as appropriate. Spare conductors need not be labeled.

E. Splice insulation shall use insulation method “B” per the detail shown in ES-13 of the most current version of the State Standard Drawings. No splices are permitted in detector lead-in cables.

F. All loop wires shall run through detector hand holes installed near lip of gutter.

G. Conductors for each inductive detector loop shall be continuous and un-spliced.

Conductors for inductive loops shall be Type 2. All loops shall be brought to pull box individually through a 2-inch chase, and conductors shall have two turns of twist per foot and spliced to the lead-in conductor in the pull box.

The ends of the tubing shall be sealed watertight at the same time the wire is placed in the slots.

Count loops shall consist of four turns of conductor as specified unless specified otherwise on the Drawings. Each phase loop shall consist of four turns of conductor.

J. The Contractor shall install all loops per the State Standard Drawings or as otherwise specified in the Contract Documents. Loops shall be centered within traffic lanes unless otherwise specified. If any iron (manhole, valve, monument, etc.) is located within two (2) feet of the planned location for home runs, the Contractor shall contact the City for an alternate location for the detector loop or home run prior to cutting any of the loops or home runs in the affected lane(s).

K. Splicing of interconnect cable shall be done only within controller cabinets on terminal blocks furnished and installed by the controller cabinet supplier. All of the splices shall be done in accordance with the recommendations of the controller supplier and to the satisfaction of the City.

SECTION 02892

TRAFFIC LOOPS

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3.04 REPAIRS
A. If any part of the loop conductor, including the portion leading to the adjacent pull box, is damaged by the Contractor's operations, the entire detector loop shall be replaced. If any adjacent loop is damaged during such replacement, that loop shall also be replaced within three days.

The Contractor shall replace damaged loop detectors within three days after completion of work at an intersection.

The Contractor shall protect existing interconnect cables from damage. Any interconnect cable or facility damaged by Contractor operations shall be replaced by the Contractor at his/her expense.

3.05 DETECTOR AND DETECTOR LEAD-IN CABLE (DLC) TESTING AND

ACCEPTANCE
The Contractor shall test all individual loops and all DLCs prior to splicing. Inductive loops, and all DLCs shall be tested for continuity, inductance and for insulation resistance using a standard multimeter for continuity and an approved loop test meter for inductance and insulation resistance. For continuity test, a value of lower than 5 ohms is desirable and acceptable. For insulation resistance test, a value of greater than 100 meghoms is desirable and acceptable. Inductance shall be more than 50 but less than 700 micro-henries. Test shall be performed and logged on City provided form included in this section. Test shall be performed in the presence of the Engineer before any splices are made. **END OF SECTION**
SECTION 02892

TRAFFIC LOOPS

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SECTION 02990

ADJUST INCIDENTAL STRUCTURES TO GRADE
PART 1 - GENERAL

1.01 DESCRIPTION
A. This Section includes raising or lowering the grade or changing the slope of the top of existing structures such as but not limited to manholes, catch basins, sumps, inlets, valve boxes, meter boxes, monument boxes, and similar structures shown or implied on the Drawings.

B. This section is not applicable to raising or lowering covers on pressurized systems.

1.02 RELATED WORK
A.

SECTION 02500, ASPHALT CONCRETE PAVEMENT
SECTION 02701, PRECAST CONCRETE STRUCTURES
SECTION 05541, MANHOLE FRAMES AND COVERS
PART 2 - PRODUCTS
Not Used.

PART 3 - EXECUTION

3.01 GENERAL
A. Determine condition of existing incidental structure. Pre-existing damage must be brought to the City’s attention prior to commencement of any work.

B. Existing structures to be adjusted to grade shall be reconstructed to the required grade.

The existing frames, grates, and covers shall be reused unless otherwise indicated.

The existing structure shall be dismantled to a sufficient depth to allow reconstruction.

Adjustment will take place just prior to placing of surface pavement for adjustments of the frame and cover. Adjustments which require dismantling and reconstruction of the structure shall be accomplished at the time of subgrade preparation. Pavement which is removed for this adjustment shall be cut square, tack coated, and capped with 2 inches of asphalt concrete.

Each structure that is adjusted shall be cleaned of accumulated silt, debris, or foreign matter prior to final acceptance of the work.

Any items damaged shall be replaced at the Contractor’s expense.

SECTION 02990

ADJUST INCIDENTAL STRUCTURES TO GRADE

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3.02 ADJUST INCIDENTAL STRUCTURES TO GRADE
A.

Contractor is responsible for notifying the Engineer of any monuments not shown on the plans that will be disturbed during construction.

Monuments and boxes shall be installed to the finished street grade. The Contractor shall bear the cost and responsibility for obtaining the services of a California registered Surveyor or Civil Engineer to tie out the existing monument, remark, and reset the monument. The Contractor shall be responsible for filing the appropriate Corner Records and shall provide a copy of all recorded documentation to the City prior to project acceptance.

Whether at existing grade or buried, all existing junction structures, traffic signal boxes, monument boxes, water valve boxes, and other miscellaneous utility boxes and vaults within the work area shall be replaced and adjusted to grade. Any items damaged shall be replaced at the Contractor’s expense.

Frames, covers, and grates of existing manholes structures, water valves, monuments, or other facilities shall be adjusted to grade at locations where they are disturbed in accordance with the provisions in Section 15-2.05, “Reconstruction,” of the Caltrans Standard Specifications except that no metal riser adjustment rings will be permitted.

The covers shall be raised by excavating the frame and cover in a neat line with a dimension not greater than necessary to loosen and adjust the frame with the cover and the concrete collar.

Adjustments shall be accomplished by removing the existing concrete collar around the frame, installing concrete adjustment rings (or other as needed), raising the frame and cover, and construction of a new concrete collar. The concrete collar shall be constructed so that the top of the collar is no greater than two inches and no less than one inch below the existing pavement grade. The void between the top of the concrete collar and the finish grade of the pavement around the collar shall be paved to finish grade with asphalt concrete.

G. All existing valve and monument boxes shall be removed and replaced at the time of construction. Water valves must be accessible immediately after paving and water valve covers must be raised within 48 hours of paving. All structures must be paved within 24 hours or the Contractor shall be required to furnish temporary paving. **END OF SECTION**
SECTION 02990

ADJUST INCIDENTAL STRUCTURES TO GRADE

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SECTION 03123

CONTROLLED LOW STRENGTH MATERIAL
PART 1 - GENERAL

1.01 SUMMARY
A.

The Contractor shall provide Controlled Low Strength Material (CLSM), complete and in place, in accordance with the Contract Documents.

CLSM shall consist of a mixture of aggregate, portland cement, mineral admixtures, water, and at the option of the Engineer, chemical accelerating admixtures.

CLSM shall be placed where indicated and may be used, if the Engineer approves, for the following purposes:

Normal CLSM with high slump, non-segregating consistency that readily flows and fills voids and difficult to reach places: pipe zone fill, trench zone fill, existing utility support, pipe abandonment, structure backfill, and structure cavity fill.

1.02 REFERENCES
A. American Society for Testing and Materials (ASTM):

1. 2.

ASTM C 33 – Concrete Aggregate
ASTM C 39 - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens

3. 4.

ASTM C 94 - Standard Specification for Ready Mixed Concrete ASTM C 138 - Standard Test Method for Density (Unit Weight), Yield and Air Content (Gravimetric) of Concrete

5. 6.

ASTM C 150 - Standard Specification for Portland Cement ASTM C 260 - Standard Specification for Air-Entraining Admixtures for Concrete.

7. ASTM C 403 - Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance

8. ASTM C 494 - Standard Specification for Chemical Admixtures for Concrete.

9. ASTM C 803 - Standard Test Method for Penetration Resistance of Hardened Concrete, exceeds 650 psi

10. ASTM D 4832 - Standard Test Method for Preparation and Testing of Controlled Low Strength Material (CLSM) Test Cylinders.

B. State Standard Specifications Section 90 (latest edition) SECTION 03123

CONTROLLED LOW STRENGTH MATERIAL

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1.03 1.04

RELATED SECTIONS
A. SECTION 02500, ASPHALT CONCRETE PAVEMENT

CONTRACTORSUBMITTALS
Shop Drawings:

CLSM mix designs which show the proportions and gradations of all materials proposed for each type of CLSM indicated. Each mix design shall be accompanied by independent laboratory test results of the indicated properties.

If the Contractor proposes to provide lower strength CLSM with aggregates that do not conform to ASTM C 33 - Concrete Aggregate, Shop Drawings shall include a testing program that will be used to control the variability of the aggregates. The testing program shall be acceptable to the Engineer.

1.05 QUALITY ASSURANCE
A. All testing will be done by a testing laboratory selected by the City at the City's expense, except as otherwise indicated.

B. If tests of the CLSM show non-compliance with the specifications, the Contractor shall make changes as may be required to achieve compliance. Performing and paying for subsequent testing to show compliance shall be the Contractor's responsibility.

C. Correlation Tests:

1. The Contractor shall perform a field correlation test for each mix of CLSM used in pipe zone, trench zone, existing utility support or backfill used in amounts greater than 100 cubic yards or when CLSM is required to support traffic or other live loads on the fill less than 7 days after placing CLSM.

Field correlation tests shall be performed in a test pit similar in cross section to the Work and at least 10-feet long at a location near the Work. The proposed location shall be acceptable to the Engineer.

Laboratory and field tests shall be performed on samples taken from the same CLSM batch mix. All tests shall be performed by a laboratory at the Contractor’sexpense.

2. 3.

4. Testing shall be performed once each 2 hours during the first 8 hours, once each 8 hours during the first week, and once each 24 hours until the CLSM mix reaches the maximum design strength.
a. Compression testing shall be in accordance with ASTM D 4832 - Preparation and Testing of CLSM Test Cylinders.
b. Setting test shall be in accordance with ASTM C 403 - Time of SECTION 03123

CONTROLLED LOW STRENGTH MATERIAL

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Setting of Concrete Mixtures by Penetration Resistance. c. Density tests shall be in accordance with ASTM C 138 - Unit Weight, Yield and Air Content (Gravimetric) of Concrete.

PART 2 - PRODUCTS

2.01 CONTROLLED LOW STRENGTH MATERIAL
A.

CLSM shall be a mixture of cement, pozzolan, coarse and fine aggregate, admixtures, and water, mixed in accordance with ASTM C 94 - Ready Mixed Concrete.

Composition: The following parameters shall be within the indicated limits and as necessary to produce the indicated compressive strengths.

1. 2.

3. Mix proportions as necessary.

Entrained air content shall be between 5 to 10 percent.

Water reducing agent content as necessary.

C. Properties:

1. 2.

3. Density shall be between 120 PCF minimum and 145 PCF maximum.

Slump shall be 5 to 8 inches.

CLSM shall have a compressive strength not less than 100 or greater than 200 psi at 28 days.
.

2.02 CEMENT
Cement shall be Type II Modified in accordance with ASTM C 150 - Portland Cement.

Mineral admixtures shall not be substituted for portland cement.

2.03 AGGREGATE
Aggregate shall conform to the quality requirements of Caltrans Section 90-1.02C, "Aggregates" and of these Specifications. Aggregate shall be well graded from coarse to fine.

Aggregate shall have a Sand Equivalent, as tested by California Test 217, of not less than 40.

Aggregate shall be of such size and gradation that, when mixed with Type II modified portland cement and mineral admixtures, and tested in accordance with ASTM C 39, the compressive strength of a sample will not be less than 100 or greater than 200 pounds per square inch at 28 days. The Contractor shall notify the Engineer, in writing, of the source and grading of the aggregate to be used in the CLSM. If material supplier is not approved by the City for CLSM, Contractor shall make such material available to the Engineer for sampling and testing at least 45 days prior to scheduled placing of the fill. Should the Contractor change his source of supply, he shall notify the Engineer in writing of the new source and grading SECTION 03123

CONTROLLED LOW STRENGTH MATERIAL

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and make that material available for sampling and testing at least 45 days prior to intended use.

2.04 ADMIXTURES
A. Air entraining admixtures shall be in accordance with ASTM C 260 - Air- Entraining Admixtures for Concrete.

B. Water reducing admixtures (Type E) shall be in accordance with ASTM C 494 - Chemical Admixtures for Concrete.

C. Accelerating admixtures (Type C) shall be in accordance with ASTM C 494.

2.05 WATER
Water shall be potable, clean, free from objectionable quantities of silt, organic matter, alkali, salt, and other impurities.

PART 3 - EXECUTION

3.01 PREPARATION
Subgrade and compacted fill to receive CLSM shall be prepared according to Section 02200 - Earthwork.

3.02 BATCHING, MIXING AND DELIVERY
A.

Batching, mixing, and delivery of CLSM shall conform to ASTM C 94. CLSM shall be mixed at a batch plant acceptable to the Engineer and shall be delivered in standard transit mix trucks.

The Portland cement content of the CLSM shall be not less than 47 pounds per cubic yard except that, after testing samples of the Contractor's proposed supply, the Engineer may order an increase in cement content, if necessary to meet the compressive strength requirement specified above. Proportioning for CLSM shall conform to the requirements for proportioning concrete mixes except that dividing of aggregate into sizes will not be required.

C. CLSM shall contain a non-calcium chemical accelerating admixture of at least 2% to decrease curing time. The actual mix proportions shall be submitted by the supplier of the CLSM, indicating the minimum and maximum compressive strengths and is subject to review and approval by the Engineer. The Contractor shall submit the CLSM mix to the Engineer.

3.03 PLACEMENT
A. CLSM shall be placed by tailgate discharge, conveyor belts, pumped, or other means acceptable to the Engineer. CLSM shall be directed in place by vibrator, shovel, or rod to fill all crevices and pockets. Avoid over-consolidation which causes SECTION 03123

CONTROLLED LOW STRENGTH MATERIAL

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separation of aggregate sizes.

B. CLSM shall be continuously placed against fresh material unless otherwise approved by the Engineer. When new material is placed against existing CLSM, the placement area shall be free from all loose and foreign material. The surface of the existing material shall be soaked a minimum of one hour before placement of fresh material, but no standing water shall be allowed when placement begins.

C. Temperature of the CLSM shall be between 50 and 90 degrees F, when placed.

CLSM shall not be placed when the air temperature is below 40 degrees F. No CLSM shall be placed against frozen subgrade or other materials having temperature less than 32 degrees F.

3.04 3.05

3.06 FINISHING
The finish surface shall be smooth and to the grade indicated or directed by the Engineer.

Surfaces shall be free from fins, bulges, ridges, offsets, and honeycombing. Finishing by wood float, steel trowel, or similar methods is not required.

CURING
CLSM shall be allowed to cure for at least 72 hours prior to placing asphalt concrete pavement of other surface material over it.

PROTECTION
A.

CLSM shall be protected from freezing for 72 hours after placement.

If the placement of the CLSM is not completed early enough to allow for placement of temporary paving, the Contractor shall provide no-skid steel plates to the span of the trench to accommodate traffic until the temporary pavement can be placed.

No fill or loading shall be placed on CLSM until probe penetration resistance, as measured in accordance with ASTM C 803 - Standard Test Method for Penetration Resistance of Hardened Concrete, exceeds 650 psi.

CLSM shall be protected from running water, rain, and other damage until the material has been accepted and final fill completed.
**END OF SECTION**
SECTION 03123

CONTROLLED LOW STRENGTH MATERIAL

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SECTION 03200

CONCRETE REINFORCEMENT
PART 1 - GENERAL

1.01 SUMMARY
A.

This Section specifies reinforcing steel for use in reinforced concrete.

Related Sections:

Section 03300, CAST-IN-PLACE CONCRETE

1.02 REFERENCES
A. City of San Carlos:

Standard Specifications and Details (latest edition).

American Society for Testing and Materials (ASTM):B.

1. 2.

3. 4.

5. 6.

7. ASTM A82 – Standard Specification for Steel Wire, Plain, for Concrete Reinforcement.

ASTM A185 –Standard Specification for Steel Welded Wire Reinforcement, Plain, for Concrete.

ASTM A615 - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.

ASTM A706 - Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement.

ASTM A775 - Standard Specification for Epoxy-Coated Steel Reinforcing Bars.

ASTM A996 - Standard Specification for Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement.

ASTM E329 - Standard Specification for Agencies Engaged in Construction Inspection and/or Testing.

American Concrete Institute:

ACI 315 – Details and Detailing of Concrete Reinforcement.

American Welding Society:

AWS D1.4 – Structural Welding Code – Reinforcing Steel.

Concrete Reinforcing Steel Institute:

1. CRSI Manual – Manual of Standard Practice.

SECTION 03200

CONCRETE REINFORCEMENT

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2. CRSI PRB – Placing Reinforcing Bars.

1.03 QUALITY ASSURANCE
Quality Control by Contractor:

A. To verify conformance with the specified requirements for concrete reinforcement, the Contractor shall engage the services of an independent testing laboratory which complies with the requirements of ASTM E329, to the satisfaction of the City.

B. The testing laboratory shall provide inspection services as specified herein, when testing is required. Costs of testing laboratory services shall be the Contractors responsibility.

1.04 SUBMITTALS
A. Provide material shop drawings, certified mills tests and welder qualification certificates in accordance to Part 2 of this Section.

B. Provide reinforcement placing drawings conforming to the requirements of ACI 315.

Placing drawings shall include bar lists, schedules, bending details, placing details, and placing plans and elevations as required to fully delineate this portion of the work.

PART 2 - PRODUCTS

2.01 BAR REINFORCEMENT
Reinforcing bars shall be deformed billet steel in conformance with ASTM A615 or ASTM A706. ASTM A996 steel shall not be used. Bars provided as dowels for future construction and bars where specified shall be epoxy-coated in conformance with ASTM A775.

2.02 WIRE FABRIC
Wire fabric shall be welded steel mesh conforming to ASTM A185.

2.03 WIRE AND PLAIN BARS
Wire used as reinforcement and bars used as spiral reinforcement in structures shall be cold drawn steel conforming to ASTM A82.

2.04 TIE WIRE
The wire shall be minimum 16 gage annealed steel conforming to FEDSPEC QQ-W-461H.

2.05 BAR SUPPORTS
Bar supports coming into contact with forms shall be CRSI Class 1 plastic protected or Class 2 stainless steel protected and shall be located in accordance with CRSI MSP-1 and placed in accordance with CRSI PRB. Concrete block supports shall be provided for footing and slabs on grade. Stainless steel or plastic protected plain steel supports shall be provided for other work.

SECTION 03200

CONCRETE REINFORCEMENT

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2.06 THREADED MECHANICAL COUPLERS
Threaded mechanical couplers shall be "Lenton" as manufactured by Erico Products, Inc., or "Grip-Twist" as manufactured by Dayton Barsplice Inc. or equal designed to develop one hundred twenty-five percent (125%) of the yield strength of the reinforcing steel.

2.07 PRODUCT DATA
Contractor shall submit the following in accordance with the Contract Documents.

Certified mill test reports.

Welder qualification certificate, if applicable, in accordance with AWS D1.4.

PART 3 - EXECUTION

3.01 FABRICATION
Reinforcing steel shall not be bent or straightened in a manner which will injure the material.

Bars with kinks or with bends not shown shall not be used. Heating or welding bars shall be performed in accordance with AWS D1.4 and shall only be permitted where specified or approved by the Engineer. Bars shall not be welded at the bend.

3.02 PLACEMENT
A. Place reinforcing steel in accordance with CRSI PRB and CRSI MSP-1.

B. Position reinforcing steel accurately and secure against displacement by using annealed iron wire at intersections and shall be supported by concrete or metal chairs, spacers or metal hangers. Tack welding of cross bars is not acceptable. Bars shown on the drawings shall not be repositioned (buried) to act as support bars. Additional bars shall be provided as required for supports. Steel rods and pegs may be used to support reinforcing steel on rock foundations. Reinforcing steel shall be placed in such a manner as to not damage waterproofing membrane or plastic lining which has been previously applied or constructed. Reinforcing steel shall be shop-bent or slightly relocated where necessary to clear waterstop. Reinforcing steel shall not be placed on fresh concrete or forced into fresh concrete.

C. Supports for embedded items shall not be welded to the reinforcement. Additional reinforcement may be provided for this purpose.

3.03 SPLICING
A. Splice reinforcing steel as indicated. Additional splices may be provided where approved by the Engineer. Splices shall conform to ACI standards.

B. In slabs, beams, girders and walls, reinforcing steel shall not be spliced in areas of maximum stress. Splices of adjacent bars shall be staggered at least one splice length, unless otherwise specified. Splices in welded wire fabric shall be at least 1-1/2 meshes wide.

SECTION 03200

CONCRETE REINFORCEMENT

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3.04 CLEANING
Clean reinforcing steel of mill rust scale, dried concrete, or other coatings that may reduce bond. Reinforcement reduced in section is not acceptable. When concrete placement is delayed, reinforcement shall be cleaned by sandblasting if directed by the Engineer.

3.05 REPAIR OF EPOXY COATING
Epoxy coating damage need not be repaired in cases where the damaged area is 0.1 square inch or smaller. All damaged areas larger than 0.1 square inch shall be repaired in conformance with ASTM A775.
**END OF SECTION**
SECTION 03200

CONCRETE REINFORCEMENT

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SECTION 03300

CAST-IN-PLACE CONCRETE
PART 1 - GENERAL

1.01 SUMMARY
A. This Section specifies cast-in-place concrete for pavements, sidewalks, curbs, encasements, and miscellaneous structures.

B. Related Sections:

1. 2.

3. SECTION 02701, PRECAST CONCRETE STRUCTURES
SECTION 03200, CONCRETE REINFORCEMENT
SECTION 03600, GROUT

1.02 REFERENCES
A. City of San Carlos:

Standard Specifications and Details (latest edition).

American Concrete Institute (ACI):B.

1. 2.

ACI MCP – Manual of Concrete Practice.

ACI 211.1 – Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete.

3. 4.

5. 6.

7. ACI 301 - Specifications for Structural Concrete.

ACI 304 – Guide for Measuring, Mixing, Transporting, and placing Concrete.

ACI 305R – Guide to Hot Weather Concreting.

ACI 306R – Guide to Cold Weather Concreting.

ACI 318 – Building Code Requirements for Structural Concrete (ACI 318- 11) and Commentary.

8. ACI 347 – Guide to Formwork for Concrete.

C. American Society for Testing and Materials (ASTM):

1. ASTM C31 - Standard Practice for Making and Curing Concrete Test Specimens in the Field.

2. 3.

ASTM C33 - Standard Specification for Concrete Aggregates.

ASTM C39 - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.

SECTION 03300

CAST-IN-PLACE CONCRETE

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4. ASTM C42 - Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete.

5. ASTM C67 - Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile.

6. 7.

ASTM C94 - Standard Specification for Ready-Mixed Concrete.

ASTM C136 - Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates.

8. ASTM C143 - Standard Test Method for Slump of Hydraulic-Cement Concrete.

9. ASTM C150 - Standard Specification for Portland Cement.

10. 11.

ASTM C172 - Standard Practice for Sampling Freshly Mixed Concrete.

ASTM C260 - Standard Specification for Air-Entraining Admixtures for Concrete.

12. ASTM C309 - Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete.

13. 14.

15. ASTM C467 - Standard Classification of Mullite Refractories ASTM C494 - Standard Specification for Chemical Admixtures for Concrete.

ASTM D1751 – Standard Specification for Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Nonextruding and Resilient Bituminous Types).

16. ASTM E329 - Standard Specification for Agencies Engaged in Construction Inspection and/or Testing.

D. State Standard Specifications Sections 40 and 90 (latest edition)

1.03 QUALITY ASSURANCE
A.

Quality Control by Contractor:

1. To verify conformance with the specified requirements for cast-in-place concrete, the Contractor shall engage the services of an independent testing laboratory which complies with the requirements of ASTM E329.

2. Costs of testing laboratory services shall be the responsibility of the Contractor in accordance with the Contract Documents.

Basis for Quality:

1. Cast-in-place concrete shall conform to the requirements of ACI 301, except as modified.

2. Unless specified otherwise, all formwork shall conform to ACI 347.

SECTION 03300

CAST-IN-PLACE CONCRETE

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1.04 SUBMITTALS
A. Submit concrete, mix designs, recent test data for the submitted mixes, and test data for mix components confirming that the mixes meet the requirements of this Section.

Submit data on concrete accessories specified herein that the Contractor intends to install in the work.

Submit the following to the project inspector in accordance with the Contract Documents:

1. TEST REPORTS: Three copies of reports from the concrete supplier shall be provided certifying that all concrete materials comply with the specifications and all test requirements.

2. READY-MIXED CONCRETE TRUCK DELIVERY TICKETS: Each load of ready-mixed concrete delivered to the job site shall be accompanied by a delivery ticket showing the information listed in ASTM C94, Section 14.

PART 2 - PRODUCTS

2.01 MATERIALS
A. Cement: Portland cement shall be ASTM C150, Type II or Type V, low alkali, containing less than 0.60 percent alkalies.

B. Aggregates:

1. GENERAL: Fine and coarse aggregates shall conform to ASTM C33. Fine and nonreactive and shall be washed before use.

When sources of aggregates are changed, test reports shall be provided for the new material. The tests specified shall be performed prior to commencing concrete work.

2. 3.

FINE AGGREGATE: Fine aggregate shall be hard, dense, durable particles of either sand or crushed stone regularly graded from coarse to fine. Gradation shall conform to ASTM C33.

COARSE AGGREGATE: Coarse aggregate shall be hard, dense and durable gravel or crushed rock free from injurious amounts of soft and friable particles, alkali, organic matter and other deleterious substances. Gradation of each coarse aggregate size specified in this Section and shall conform to ASTM C33-Table 3.

C. Admixtures:

1. GENERAL: All admixtures shall be compatible with the concrete. Calcium chloride or admixtures containing calcium chloride are not acceptable.

Admixtures shall be used in accordance with the manufacturer's recommendations and shall be added separately to the concrete mix.

SECTION 03300

CAST-IN-PLACE CONCRETE

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2. WATER REDUCING RETARDER: Water reducing retarder shall be ASTM C494, Type D, and shall be BASF MasterSet R 300; Sika Chemical Corp., Plastiment; or equal.

3. AIR ENTRAINING AGENT: Air entraining agent shall be BASF, MasterAir AE 90; W. R. Grace and Co., DaraVair; or equal. The air entraining agent added shall produce, in accordance with ASTM C260, an entrained air content specified in this Section for each class of concrete.

D. Water: Water for washing aggregate, for mixing and for curing shall be free from oil and deleterious amounts of acids, alkalies, and organic materials.

2.02 CONCRETE CHARACTERISTICS
A. Mix Proportioning:

1. Concrete shall be normal weight concrete composed of specified cement, admixtures, aggregates and water proportioned and mixed to produce a workable, strong, dense, and impermeable concrete.

2. Concrete shall be provided in accordance with the following:

Concrete ASTM Min. Maximum Flyash percent Air Maximum Minimum Class Coarse
Aggregate Content, ratio by
Cement water/cement by weight of Entrainment
Admixture
slump in
inches
28-day
compressive
strength, psi
cementious
materialSize sacks/cu weight
yd
concrete
B
C
E
#57
#67
#57

5.25 5.25

5.25 0.45

0.45 0.55
18-20
18-20
0 Yes
Yes
No
3-1/2
4 6
4000
4000
2000
Notes for table:
a. Compressive strength shall be determined at the end of 28 days based on test cylinders made and tested in accordance with ASTM C39.
b. When slag is used as pozzolan material, slag shall comply with ASTM C989 / AASHTO M 302, Grade 100 or 120.

3. Concrete mix for sidewalk, curb, and gutter shall include 1 pound of Lamp Black color admixture per one cubic yard of concrete.

B. Concrete shall be provided by class for the corresponding use listed as follows:

Types of Use Class of Concrete
Concrete 12 inches thick and greater
Concrete less than 12 inches thick
Conduit Encasement (duct banks) and
concrete fill
B
C
E
SECTION 03300

CAST-IN-PLACE CONCRETE

9.c
May 08, 2023

Packet Pg. 256

City Project No. C9617
2023 Sewer Rehabilitation Project
April 2023
Submittal
Technical Specifications
Page TS-166
C. Control: Before beginning concrete work, the Contractor shall determine the proper proportions of materials for class of concrete B and C. Methods for selecting and adjusting proportions of the ingredients shall be in accordance with ACI 211.1. Reports from the concrete supplier of each mix design shall state whether the items reported comply with the specifications and shall show (1) the expected strength, (2) corresponding slump, (3) expected drying shrinkage, (4) weights and test results of the ingredients on the basis of field experience and/or trial mixtures in accordance with ACI 318, Chapter 5 with at least 30 tests, and (5) other physical properties necessary to check each mix design. Copies of the reports shall be submitted in accordance with the Contract Documents.

2.03 WATERSTOPS
Where specified, waterstops in construction or expansion joints shall be Greenstreak PVC waterstop by Sika Corporation; or approved equal. Waterstops used for connection of pipes to manhole walls are specified elsewhere.

2.04 EXPANSION JOINT MATERIALS
Expansion joint material shall be ¼-inch or ½-inch thick, per applicable City Standard Detail, pre-molded expansion joint filler in conformance with ASTM D1751. Expansion joint material shall be shaped to fit the cross section of concrete being placed.

2.05 BONDING COMPOUNDS
A.

Epoxy resin bonding compounds shall be used for wet areas and shall Master Builders Technologies, Concresive series as applicable; Sika Chemical Corporation, Sikadur 35, Hi-Mod LV, Sikadur 32, Hi-Mod, or Sikadur 31, Hi-Mod Gel as applicable; or equal.

Nonepoxy bonding compounds shall be used for dry areas and shall be Acrylic Bondcrete; Imperial Chemical Industrial, Inc., Thoro System Products, Acryl 60; Thorobond; or equal. Bonding compounds shall be applied in accordance with the manufacturer's instructions.

2.06 RETARDANT
Retardant for exposing aggregates for nonformed surfaces in construction joints shall be Sika Rugasol-S, Horn Aggretex-H, or equal. Retardant shall be applied in accordance with manufacturer's instructions sufficient to assure a minimum penetration of 1/8 inch.

2.07 CURING AND SEALING COMPOUNDS
Curing and sealing compound shall be BASF, Masterseal; A. C. Horn Inc., Horn Clearseal EM180; Burke Company Spartan-Cote WB Cure Seal Hardener; or equal; conforming to ASTM C309. Curing compounds shall be clear and shall be applied in accordance with the manufacturer's instructions, except as otherwise specified.

2.08 CONCRETE PAVING WITHIN STATE RIGHT-OF-WAY
Concrete paving within State right-of-way shall be in accordance with Section 40 and 90 of the State Standard Specifications.

SECTION 03300

CAST-IN-PLACE CONCRETE

9.c
May 08, 2023

Packet Pg. 257

City Project No. C9617
2023 Sewer Rehabilitation Project
April 2023
Submittal
Technical Specifications
Page TS-167
PART 3 - EXECUTION

3.01 GENERAL
Construction of cast-in-place concrete shall be in accordance with the pertinent recommendations contained in ACI Manual of Concrete Practice of 300 Group.

3.02 CONCRETE
A.

Concrete shall be truck-mixed, ready-mixed concrete conforming to the applicable portions of ASTM C94. Materials shall be proportioned by weighing. The Contractor shall be responsible for producing concrete of the specified characteristics.

Concrete shall be delivered to the site of work, and discharge shall be completed within 1-1/2 hours after introduction of the water to the mixture.

3.03 CONVEYING AND PLACING CONCRETE
A. Conveying Concrete: Concrete shall be conveyed from the mixer to the forms in accordance with ACI 301, Chapter 8. Concrete which has segregated in conveying shall be removed from the site of the work.

B. Placing Concrete:

1. GENERAL: Concrete shall be placed in accordance with ACI 301, Chapter 8, and ACI 304, Chapter 6. Pumped concrete shall be the class and consistency specified in the Contract Documents.

2. 3.

PLACING CONCRETE IN HOT WEATHER: In hot weather (above 85 degrees F), concrete shall be placed in accordance with ACI 305R.

PLACING CONCRETE IN COLD WEATHER: In cold weather (below 45 degrees F), concrete shall be placed in accordance with ACI 306R.

3.04 CONCRETE FORMWORK
Formwork shall be installed in accordance with ACI 347.

3.05 CURING AND SEALING
A. General

1. Concrete curing shall be completed by water curing or by using a clear membrane curing compound or by a combination of both methods. Repairs or treatment of concrete surfaces shall be coordinated so that interruption of the curing will not be necessary.

2. Concrete surface temperature shall be maintained between 50 degrees F and 80 degrees F for at least 5 days. Curing concrete in hot weather (above 85 degrees F) shall be in accordance with ACI 305R. Curing concrete in cold weather (below 45 degrees F) shall be in accordance with ACI 306R.

SECTION 03300

CAST-IN-PLACE CONCRETE

9.c
May 08, 2023

Packet Pg. 258

City Project No. C9617
2023 Sewer Rehabilitation Project
April 2023
Submittal
Technical Specifications
Page TS-168
B. Water Curing: When water curing is used, concrete shall be kept wet continuously for a minimum of ten (10) days after placement. Burlap mats or fabric may be used to retain moisture during the curing period.

C. Curing Compound:

1. When curing compound is used, it shall be applied as soon as the concrete has set sufficiently so as not to be marred by the application or immediately following form removal for vertical and other formed surfaces. Preparation of surfaces, quantities used, application procedures, and installation precautions shall be followed in strict compliance with the manufacturer's instructions.

2. Curing compound shall not be used on concrete surfaces to be coated, waterproofed, or moisture-proofed.

3.06 PROTECTION
Concrete shall be protected from injurious action by sun, rain, flowing water, frost and mechanical injury.

3.07 CONSTRUCTION JOINTS
A. Construction joints shall be located and formed as specified. A rough surface of exposed concrete aggregates shall be produced using a surface retardant at construction joints. The limit of the treated surfaces shall be 1 inch away from the joint edges.

Within 24 hours after placing, retarded surface mortar shall be removed either by high pressure water jetting or stiff brushing or combination of both so as to expose coarse aggregates. A rough surface of exposed aggregate may also be produced by sandblasting followed by high pressure water jetting. Sandblasting, if used, shall remove 1/8 inch of laitance film and shall expose coarse aggregate to insure adequate bond.

B. Reinforcing steel and welded wire fabric shall be continued across construction joints. Waterstops shall be provided in construction joints at locations as specified.

3.08 INSERTS AND EMBEDMENTS
A. Inserts:

1. Where pipes, castings or conduits are to pass through structures, the Contractor shall place such pipes or castings in the forms before placing the concrete, or he may provide openings in the concrete for subsequent insertion of such pipes, castings or conduits. Such openings shall be provided with waterstops and V- shaped construction joint as shown and shall have a slight flare to facilitate grouting and permit the escape of entrained air during grouting

2. Additional reinforcement shall be provided around large openings as shown on the Drawings. The grout shall be non-shrink grout as specified in the Contract Documents.

SECTION 03300

CAST-IN-PLACE CONCRETE

9.c
May 08, 2023

Packet Pg. 259

City Project No. C9617
2023 Sewer Rehabilitation Project
April 2023
Submittal
Technical Specifications
Page TS-169
B. Embedments: Gate frames, gate thimbles, special castings, channels or other miscellaneous metal parts that are to be embedded in the concrete shall be set and secured in the forms prior to concrete placement. Unless otherwise specified, anchor bolts and inserts shall be embedded in concrete as shown. The Contractor shall provide inserts, anchors or other bolts necessary for the attachment of piping, valves, metal parts and equipment. Operators or sleeves for gate or valve stems shall be positioned to clear reinforcing steel, conduit and other embedments, and to align accurately with equipment.

3.09 EXPANSION JOINTS
Expansion joints shall be as specified. Reinforcement or other embedded metal items bonded to the concrete shall not extend through expansion joints. Waterstops shall be provided in expansion joints as specified in this Section.

3.10 WATERSTOPS
Waterstops shall be provided at the specified locations. Waterstops shall be securely held in position during placing of concrete. If, after placing concrete, waterstops are materially out of position or shape, the surrounding concrete shall be removed, the waterstop reset, and concrete replaced in accordance with this Section.

3.11 MODIFICATION OF EXISTING CONCRETE
Existing concrete shall be removed, and the remaining surfaces resurfaced as specified. The remaining concrete shall be protected from damage. Clean lines shall be made by sawing through the existing concrete. The concrete may be broken out after initial saw cuts in the event thickness prevents cutting through. Where it is not possible to use a saw, the initial cuts shall be made with chipping hammers. These cuts shall be sufficient to prevent damage to the remaining concrete. In general, an opening in existing concrete shall be oversized 1 inch on all sides and built back to the correct dimension with an epoxy grout. Where oversized openings cannot be made, the concrete shall be cut to the correct dimension, with the exposed reinforcing cut back an additional 1 inch and the resulting hole filled with epoxy grout. Cut or broken concrete surfaces shall be resurfaced with an epoxy grout. Concrete surfaces to be coated shall be dry. Where new concrete adjoins existing concrete surfaces or surfaces which have been cut, such surfaces shall be cleaned by sandblasting to remove laitance, loose coatings and foreign materials, and coated with the bonding compound just prior to the placement of the new concrete. Bonding compounds shall be as specified in this Section. Unless otherwise specified, continuity of reinforcing steel shall be obtained across the joint either by exposing existing bars to provide sufficient laps with new bars or by welding existing bars with new bars. Dowels shall be drilled and set with epoxy grout into existing concrete.

San Carlos City CouncilMay 8, 2023

San Carlos City Council
May 8, 2023