PURCHASING DEPARTMENT COLEEN CASELLA

Assistant Purchasing Agent for

Goods & Services

Elizabeth Unger NATALIE SULLIVAN Purchasing Agent Assistant Purchasing Agent for

Design & Construction

City of Cambridge

795 Massachusetts Avenue, Cambridge, Massachusetts 02139 Voice: 617-349-4310 Fax: 617-349-4008 TTY: 617.349.4242

TO: All Bidders

FROM: City of Cambridge

DATE: February 5, 2021

RE: File No. 9506 – Historic Out of Town News Kiosk and MBTA Headhouse Renovation

Project – Addendum No. 1

This addendum is comprised of:

1. Pre-Bid Sign in Sheet (Attached)

2. Pre-Bid Meeting Agenda

3. Question and Answers

The following questions were asked and answered:

Question: Can you clarify who owns winter conditions, this has become a legal issue on many

projects. Enclosures and heat can only be calculated accurately if a schedule is provided and

maintained in order to alleviate unnecessary costs being assumed by all file sub bid trades that

need enclosures and heat. Due to unknown scheduling for the subcontractors work, what is the

interpretation of the design team in regards to the winter condition requirements for this

project? Is each filed sub-bidder responsible to enclose work areas and provide heat for them or

will the General Contractor that coordinates all work be responsible for the costs associated

with enclosures and heat?

Answer: Heat is to be provided by the General Contractor in accordance with

section 5.7.1 of the General Terms and Conditions (00800), 5.22.11 of the General

Terms and Conditions (00800), and specification section 011000–General

Requirements.

Question: If the file sub-bid contractors are responsible for enclosures or heat, how would you

assume the appropriate funds for this work if no detailed schedule is provided at bid time?

Answer: Heat is to be provided by the General Contractor in accordance with section 5.7.1 of

the General Terms and Conditions (00800), 5.22.11 of the General Terms and Conditions

(00800), and specification section 011000–General Requirements.

795 Massachusetts Avenue, Cambridge, Massachusetts 02139 Voice: 617-349-4310 Fax: 617-349-4008 TTY: 617.349.4242

Question: Metal Surfaces New or Existing

Would a Power Tool Clean and a Solvent Wipe be an acceptable means of preparation as long as

it satisfies manufacturers recommendations, followed by a Surface Tolerance Epoxy as stated in

the specifications (PPG Amerlock 400 Epoxy) followed by finish coat(s)

Answer: Contractor to provide bids as per drawings and specifications. Substitutions by

awarded contractor will be reviewed by the architect and owner.

Question: Wood Surfaces Existing

Would Dumond Smart Strip Advanced Paint Remover be an acceptable means of preparation as

long as it satisfies manufacturer recommendations before primer and finish coat(s)

Using these methods above will eliminate some of the costly containment’s in such a small and

busy space in the Sandblasting procedures.

Answer: Contractor to provide bids as per drawings and specifications. Substitutions by

awarded contractor will be reviewed by the architect and owner.

Question: Detail 5/A5.00 notes a two stage sealant at all window and door units which is

normally provided by Section 079200. Please confirm that Section 079200 is responsible to

provide sealant and backer rod at all steel windows and steel door units both exterior and

interior.

Answer: Yes, but not including glazing as per section 088000.

Question: It was mentioned at the walkthrough that the tunnel for the Red Line is below that of

the Out of News Kisok. Therefore, could you please confirm the existing slab thickness and if

there are any structural weight limitations if equipment were to be used.

Answer: The thickness of the existing concrete roof/beam of the MBTA Harvard Station varies

(approx. 1.5’ – 5.0’). Live loads from construction equipment shall be no greater than four

hundred (400) pounds per square foot in accordance with Specification 312300 Part 3.1 A.4.

Question: Please confirm who would own salvaging of the existing granite bases and steps.

Answer: Salvaging of masonry is to be included with the “Masonry Work” filed sub-bid scope of

work; see specification section 040120, 1.2 for description of work.

All other details remain the same.

Elizabeth Unger

Purchasing Agent

Addendum No. 1

Pre-Bid Meeting Agenda

Historic Out of Town News Kiosk and MBTA Headhouse Renovation Project

January 25, 2021

1PM

Meeting Format

• All perspective bidders will be given time to walk the project site

• All attendees will gather together for questions

• All questions must be asked in the presence of all attendees

• Questions will not be answered individually by any City Staff, their Consultants or designees

• Verbal responses are not binding unless submitted in writing to the City of Cambridge Purchasing Dept

and answered by addendum

• All questions must be submitted to: purchasing@cambridgema.gov

Project Area

Harvard Square

• Historic Out of Town News Kiosk and MBTA Harvard Sq Headhouse

COVID – 19

• Amended Temporary Emergency Construction Order

o Requires COVID-19 Control Plan

o Requires State Required Compliance Attestation

• All required documents shall be submitted with construction permit application

Affirmative Action and Work Force Compliance

• Certified payroll, for GC and all subs, shall be sent weekly to: certifiedpayrolls@cambridgema.gov

• Attach (1) original to application for payment

Superintendence

• On-site, full-time superintendence during all work hours assigned only to this project in the City of

Cambridge

Community Relations

• Notices written by or approved by DPW. Contractor is required to assist with distribution when needed

• Adequate notice required (in most cases, 48 hours written notification) for beginning of the work, closures,

shutdowns, paving, or other major operations

• Notify all business and stakeholders in the area

• Community Relations Manager: Kate Riley, kriley@cambridgema.gov

Permits

• Online Permitting System:

o https://permits.cambridgema.gov/CAPSite/Public/Main

• Dig Safe required

• Required for each location and must be renewed every 30 days.

• DPW- Street excavation and sidewalk obstruction

• Water Dept.- Installation of water piping, services and/or use of Fire Hydrants--back follow preventer--

no free water without permission, water meter to be obtained from CWD.

• Cambridge Police – Sunday and Holidays require CPD permit and DPW approval

• Noise Variance: (Please note: takes 3 – 4 weeks for review and approval)

o Required outside these hours: Mondays-Fridays 7:00 a.m. – 6:00 p.m., Saturdays 9:00 a.m. – 6:00

p.m., Sundays/Holidays (require Police Permit) 9:00 a.m. – 6:00 p.m.

• https://cambridgema.viewpointcloud.com/categories/1096/record-

types/6690

• State Building permit – pending, allows the Contractor to perform work on public infrastructure (MBTA

roof slab/headhouse)

Application for payment

• Monthly, 3 original signed copies

Supplemental Conditions

SPECIAL REQUIREMENTS – GENERAL

• The Contractor shall execute a License for Entry with the MBTA prior to commencing work

• The City has submitted the application to the MBTA. The application is currently under MBTA review

POLICE DETAILS

• GC (General Contractor) is responsible for ordering Police Details, 617-349-3350 – requires 24Hours

notice, except in emergencies

• Detail office hours:

o Monday – Thursday: 5:30am – 5pm

o Friday: 5:30am – 11am

• DPW is responsible for payment to CPD. The GC must submit all signed detail slips at the bi-weekly job

meetings. Any invoices not approved will be the responsibilities of the GC to pay

• The GC will be charged for details if the GC fails to show for the job or if the GC fails to cancel the detail

with adequate notice

COORDINATION WITH WORK BY OTHERS

• The schedule for the project shall be coordinate with, but not limited to, the following projects in Harvard

Square:

o One JFK Street (private developer)

o 4 Brattle (private developer)

o MBTA Harvard Station

o Harvard University Projects

Utility Coordination

• Cambridge Water Dept.

• Sewer and drainage – DPW

• Cambridge Electric and Fire

• Cambridge Traffic Dept.

• Eversource Gas and Electric

• Comcast

• Verizon

• MWRA

• MBTA

• General coordination with utilities to adjust castings, structures, relocate utilities in the way of the

proposed work

• Any other utilities in the street not identified above

Project Meetings and Communications

• DPW Coordination – Monday Mornings @ 9:15 AM

o Held virtually until further notice March - November

o Invite will be sent to all contracted parties

• Bi-Weekly Project meetings, held virtually until further notice, to be attended by Superintendent and

project manager

• Emergency contact information shall be submitted to the PM at the start of the project

Work Hours

• 7:00 AM - 4:00 pm: Any off-hours work shall be approved in advance and coordinated w/CWD, DPW,

Police and Fire

• No work on weekends or city holidays - unless approved by DPW and CPD permit

• Noise variance for overnight work will require 3 weeks’ notice and application to the license commission

(See link above)

Pre-Construction Survey

• The pre-construction survey shall be done and approved before construction work begins

• Supplemental Conditions require videotaping private and public defects in advance of beginning work

Maintenance and Protection of Traffic

Submit traffic management plan for review prior to start of work. Plan must address vehicles, bicycles,

pedestrians, ADA accessibility and MBTA services. Signs must comply with MUTCD signs.

• AAB compliant pedestrian detour must be maintained at all times

• Idling ordinance - not more than 5 min.

• Must allow for safe passage of bicycles through work zone

• Remove snow from sidewalk and streets within the work zone

• Posting of temporary “No Parking” signs - 24 hours advance notice. Once, posted, the GC shall notify the

traffic and parking office at 617-349-4724

Submittals

• Submit 4 copies each of hard copies as well as electronic pdf or CD. An 8½ x 11 and 11 x 17 size. Any

color cut sheets must be scanned in color. Full size plans must be submitted hard copy (4 copies)

• All submittals including RFIs, shall be sent to Lou Mothon, DPW project engineer, 147 Hampshire Street,

Cambridge, MA 02139, lmothon@cambridgema.gov for review and distribution.

Questions

• Filed sub bid questions must be submitted, in writing, by 4pm on Monday February 1, 2021 to:

Purchasing Department

Attn: Natalie Sullivan

purchasing@cambridgema.gov

Cambridge City Hall

795 Massachusetts Avenue

Cambridge, MA 02139

• General bid questions must be submitted, in writing, by 4pm on Monday February 8, 2021 to:

Purchasing Department

Attn: Natalie Sullivan

purchasing@cambridgema.gov

Cambridge City Hall

795 Massachusetts Avenue

Cambridge, MA 02139

Bid Opening

• Bid openings will be held via telephone conference call

* Bids not sent by courier can be dropped off to a locked drop box located at the rear entrance of City Hall.

The box will be checked at the scheduled submission deadline.

Bidders who wish to attend a bid opening can do so by telephone conference call. Conference call information

can be found in the invitation to bid.

Other Priority Items

• Site cleanliness –Daily clean up, sweeping, minimize work zone

o No coffee cups, construction debris, etc shall remain at the end of the day

o Nothing left on private property

• Clean and organized storage of equipment and materials

• Tree protection – must be in place before start of any work

• Rodent control must be in place before start of any work

• Record Drawings (As-builts) are required

• Harvard Square Parking Memo – To be included in an addendum

QUESTIONS?