Addendum_1_04A7444.pdf

“Improving lives and communities through transportation.”

DEPARTMENT OF TRANSPORTATION

ADMINISTRATION

DIVISION OF PROCUREMENT AND CONTRACTS

1727 30th STREET, MS-65

SACRAMENTO, CA 95816

PHONE (916) 227-6000

TTY 711

https://dot.ca.gov/programs/procurement-and-contracts/

April 20, 2026

Addendum No. 1 Invitation for Price Quotes (IFPQ) #04A7444

Roof Replacement Services in Alameda County

NOTICE TO ALL PROSPECTIVE BIDDERS:

Addendum No. 1 is being issued for the above-referenced IFPQ. Bids for this work shall be with the full understanding of this Addendum.

The following changes have been made:

The bid submittal due date has been extended and is now April 27, 2026. Please refer to the revised IFPQ Timeline below:

Event Date Time

(Pacific Time)

IFPQ available to prospective bidders 04/07/2026 Optional Site Inspection 04/15/2026 10:00 a.m.

Written Question Submittal 04/16/2026 12:00 p.m.

Final Date for Quote Submission 04/21/2026 04/27/2026 2:00 p.m.

Proposed Award Date (estimate) 05/05/2026

The following represents question submitted for this IFB and the Department’s response:

Question 1:

In the tear-off (demolition). We are to demo the Thermoplastic Polyolefin (TPO) and not the insulation part of the buildings. It currently says that we are to remove TPO and sheathing as need it. Do we price in a complete removal to all insulation and replacement, or just the TPO single-Ply membrane and allocate time and material for any possible sheathing removal?

Answer 1:

Please refer to Exhibit A, Item 7.A, of the Proposed Form of Agreement. Attachment 2, Project Plans have also been updated. Please see attached.

http://www.dot.ca.gov/dpac/ http://www.dot.ca.gov/dpac/

“Improving lives and communities through transportation.”

Question 2:

Can I get a copy of the Optional Site Inspection Sign-in sheet.

Answer 2:

Please see attached.

All other terms and conditions set forth in the IFPQ remain in full force and effect.

Sincerely, Kae Saechin Contract Analyst

X

X

X

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STATE OF CALIFORNIA

Di st- COUNTY

04 ALA

LOCATION

CODE

DEPARTMENT OF TRANSPORTATION

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PROJECT

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AIRPORT

SAN FRANCISCO BAY

THE CONTRACTOR SHALL POSSESS THE CLASS (OR CLASSES)

OF LICENSE AS SPECIFIED IN THE "NOTICE TO BIDDERS."

THE

BORDER LAST REVISED 8/1/2016 CAL TRANS WEB SI TE IS: HTTP/ /WWW. DOT. CA. GOV/

PLANS FOR

STATE

BUILDING CONSTRUCTION

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EAST

IN

IN ALAMEDA

BAY REGION

COUNTY

MAINTENANCE

CALIFORNIA

FACILITY

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TO OAKLAND

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LOCATION MAP

SAN LEANDRO

ANTHONY CHABOT

REGIONAL PARK

LOCATION OF WORK

EAST BAY REGION MAINTENANCE FACILITY

600 LEWELLING BL VD.

SAN LEANDRO, CA 94579

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LICENSED ARCHITECT

PLANS APPROVAL DATE

DEC U 3 2025

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(PRIMARY)

25-N-5074-0-NW

12-03-2025

DATE

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C36174

03-31-27

RENEWAL DA

TH£ STAT£ OF CALIFORNIA OR ITS

OFFICERS OR AGENTS SHALL NOT 8£

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OF CA\.\

COMPLETENESS OF SCANNED COPIES OF THIS PLAN SHEET.

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PROJECT ID 0425000162 5 8

UNIT 3584 PROJECT NUMBER & PHASE 04250001251

VERSION

V1

Attachment 2 - Project Plans

TBD

Agreement Number 04A7444

Attachment 2 - Project Plans TBD Agreement Number 04A7444

A1-1

EQUIPMENT STORAGE ROOF PLAN

12-3-25

EXISTING ROOF PLAN

SCALE 1/8" = 1'-0"

PLAN

NORTH

NOTES:

REMOVAL

MODIFIED

AS REQUIRED FOR NEW WORK.

REMOVE EXISTING METAL CAP AND FLASHING

AS REQUIRED IN KIND, TYP.

INSTALL NEW METAL CAP AND FLASHING

ROOF OPENINGS, TYP.

LISTED EMBER-RESISTANT VENTS AT ALL

FLASHING AS REQUIRED. PROVIDE OSFM-

INSTALL NEW IN-KIND METAL VENTS AND

INSTALL NEW ROOF DRAINS IN KIND11

TYP.

AND FLASHING AS REQUIRED FOR NEW WORK,

EXISTING ROOF VENTS AND HVAC EQUIPMENT

EXISTING ROOF VENTS TO REMAIN. REMOVE

4 REMOVE EXISTING ROOF DRAIN

REQUIRED, TYP. PAINTED.

INSTALL NEW DRIP EDGE METAL FLASHING AS

MODIFIED ROOF PLAN

SCALE 1/8" = 1'-0"

PLAN

NORTH

GENEVIEVE EFE

GENEVIEVE EFE

MARC BETINOL

MARC BETINOL

DISPOSED.

PANELS WILL BE REUSED, STORED, OR

DISTRICT TO DETERMINE WHERE SOLAR

DISCONNECT FROM ELECTRICAL PANEL.

ASSOCIATED COMPONENTS AND

REMOVE EXISTING SOLAR PANELS AND

REMAIN, PROTECT IN PLACE

EXISTING MOUNTED ANTENNAE TO

FLASHING FOR HVAC EQUIPMENT.

PROVIDE INSTALL NEW CURB AND CURB

FLASHING

INSTALLATION OF NEW CURB AND CURB

TEMPORARILY REMOVED TO ALLOW

EXISTING HVAC EQUIPMENT TO BE

564 3 4

4 7

175'-4" VIF

V I F

3'-0"

175'-4" VIF

3'-0"

F

11 711

1311 10 11 9 12

SLOPE SHALL BE MIN. 1/4:12 (2%).

EXISTING SUBSTRATE AS NEEDED. NEW ROOF

VAPOR BARRIER AS REQUIRED. REPLACE

MEMBRANE AND INSTALL NEW INSULATION AND

INSTALL NEW SINGLE PLY (CLASS A) ROOFING

1 REPLACED PER ADDENDUM No. 1

DATED APRIL 20, 2026

WORK.

AND VAPOR BARRIER AS REQUIRED FOR NEW

REMOVE EXISTING INSULATION AND SHEATHING

REMOVE EXISTING LOW SLOPE TPO ROOFING AND

DEPARTMENT OF TRANSPORTATION

DIVISION OF ENGINEERING SERVICES

ARCHITECTURAL

STRUCTURAL DESIGN

AND

DESIGN

DETAILS

QUANTITIES

BY

BY

BY

CHECKED

CHECKED

CHECKED

ORIGINAL SCALE IN INCHES

FOR REDUCED PLANS 1 2 30

POST MILE

C:\Users\s160217\OneDrive - California Department of Transportation\Projects\HM5\District 04\FY 25_26\2X890_East_Bay_Region\working files\cadd\sheet_A1-1_roof plan_equip stor.dgn

A P

R

REVISION DATES (PRELIMINARY STAGE ONLY)

SHEET

SHEET OF

CALIFORNIA

STATE OF

DISREGARD PRINTS BEARING

EARLIER REVISION DATES

LOC CODE

(880)20/20

LOCATION

CODE

EAST BAY REGION MAINTENANCE FACILITY

04250001621

UNIT:

PROJECT NUMBER & PHASE:

CONTRACT No.: 04-2X890

TAEMWW Imperial - CCSC Rev. 10/20 completeness of scanned copies of this plan sheet.

shall not be responsible for the accuracy or

The State of California or its officers or agents

04 ALA 5730

COUNTY

POST MILES

TOTAL PROJECT

SHEET TOTAL

SHEETSNo.

Dist

No.

STATE OF CAL FORN

A

I I

L

IC

E N

SED ARCHIT

E C

T

PLANS APPROVAL DATE

RENEWAL DATE

LICENSED ARCHITECT DATE

VERSION

V1

C36174

03-31-27

BETINOL

MARC

12-03-25

A1-2

OFFICE/CREW ROOF PLAN

12-3-25

NOTES:

REMOVAL

MODIFIED

WORK.

AND VAPOR BARRIER AS REQUIRED FOR NEW

REMOVE EXISTING INSULATION AND SHEATHING

REMOVE EXISTING LOW SLOPE TPO ROOFING AND

AS REQUIRED FOR NEW WORK.

REMOVE EXISTING METAL CAP AND FLASHING

AS REQUIRED IN KIND, TYP.

INSTALL NEW METAL CAP AND FLASHING

ROOF OPENINGS, TYP.

LISTED EMBER-RESISTANT VENTS AT ALL

FLASHING AS REQUIRED. PROVIDE OSFM-

INSTALL NEW IN-KIND METAL VENTS AND

INSTALL NEW ROOF DRAINS IN KIND11

TYP.

AND FLASHING AS REQUIRED FOR NEW WORK,

EXISTING ROOF VENTS AND HVAC EQUIPMENT

EXISTING ROOF VENTS TO REMAIN. REMOVE

4 REMOVE EXISTING ROOF DRAIN

REQUIRED, TYP. PAINTED.

INSTALL NEW DRIP EDGE METAL FLASHING AS

SLOPE SHALL BE MIN. 1/4:12 (2%).

EXISTING SUBSTRATE AS NEEDED. NEW ROOF

VAPOR BARRIER AS REQUIRED. REPLACE

MEMBRANE AND INSTALL NEW INSULATION AND

INSTALL NEW SINGLE PLY (CLASS A) ROOFING

MODIFIED ROOF PLAN

SCALE 1/8" = 1'-0"

PLAN

NORTH

GENEVIEVE EFE

GENEVIEVE EFE

MARC BETINOL

MARC BETINOL

OR REPLACED IN KIND.

SQUARE METAL CAP SHALL BE REMOVED

CONTRACTOR TO CONFIRM WITH OWNER IF

REMAIN, PROTECT IN PLACE

EXISTING MOUNTED ANTENNAE TO

FOR HVAC EQUIPMENT.

PROVIDE INSTALL NEW CURB AND CURB FLASHING

FLASHING

INSTALLATION OF NEW CURB AND CURB

TEMPORARILY REMOVED TO ALLOW

EXISTING HVAC EQUIPMENT TO BE

EXISTING ROOF PLAN

SCALE 1/8" = 1'-0"

PLAN

NORTH

71'-4" VIF

F

3'-0"

71'-4" VIF

3'-0"

F

534 7

53 2

51011 7510 9

51110

1 REPLACED PER ADDENDUM No. 1

DEPARTMENT OF TRANSPORTATION

DIVISION OF ENGINEERING SERVICES

ARCHITECTURAL

STRUCTURAL DESIGN

AND

DESIGN

DETAILS

QUANTITIES

BY

BY

BY

CHECKED

CHECKED

CHECKED

ORIGINAL SCALE IN INCHES

FOR REDUCED PLANS 1 2 30

POST MILE

C:\Users\s160217\OneDrive - California Department of Transportation\Projects\HM5\District 04\FY 25_26\2X890_East_Bay_Region\working files\cadd\sheet_A1-2_roof plan_office-crew.dgn

A P

R

REVISION DATES (PRELIMINARY STAGE ONLY)

SHEET

SHEET OF

CALIFORNIA

STATE OF

LOCATION

CODE

EAST BAY REGION MAINTENANCE FACILITY

04250001621

UNIT:

PROJECT NUMBER & PHASE:

CONTRACT No.: 04-2X890

TAEMWW Imperial - CCSC Rev. 10/20 completeness of scanned copies of this plan sheet.

shall not be responsible for the accuracy or

The State of California or its officers or agents

04 ALA 5730

COUNTY

POST MILES

TOTAL PROJECT

SHEET TOTAL

SHEETSNo.

Dist

No.

STATE OF CAL FORN

A

I I

L

IC

E N

SED ARCHIT

E C

T

PLANS APPROVAL DATE

RENEWAL DATE

LICENSED ARCHITECT DATE

VERSION

V1

C36174

03-31-27

BETINOL

MARC

12-03-25

A1-2

NEW PVC ROOFING DETAILS

12-3-25

GENEVIEVE EFE

GENEVIEVE EFE MARC BETINOL

MARC BETINOL

1 REPLACED PER ADDENDUM No. 1

DEPARTMENT OF TRANSPORTATION

DIVISION OF ENGINEERING SERVICES

ARCHITECTURAL

STRUCTURAL DESIGN

AND

DESIGN

DETAILS

QUANTITIES

BY

BY

BY

CHECKED

CHECKED

CHECKED

ORIGINAL SCALE IN INCHES

FOR REDUCED PLANS 1 2 30

POST MILE

C:\Users\s160217\OneDrive - California Department of Transportation\Projects\HM5\District 04\FY 25_26\2X890_East_Bay_Region\working files\cadd\sheet_A1-3_PVC roof details.dgn

A P

R

REVISION DATES (PRELIMINARY STAGE ONLY)

SHEET

SHEET OF

CALIFORNIA

STATE OF

LOCATION

CODE

EAST BAY REGION MAINTENANCE FACILITY

04250001621

UNIT:

PROJECT NUMBER & PHASE:

CONTRACT No.: 04-2X890

TAEMWW Imperial - CCSC Rev. 10/20 completeness of scanned copies of this plan sheet.

shall not be responsible for the accuracy or

The State of California or its officers or agents

04 ALA 5730

COUNTY

POST MILES

TOTAL PROJECT

SHEET TOTAL

SHEETSNo.

Dist

No.

STATE OF CAL FORN

A

I I

L

IC

E N

SED ARCHIT

E C

T

PLANS APPROVAL DATE

RENEWAL DATE

LICENSED ARCHITECT DATE

VERSION

V1

C36174

03-31-27

BETINOL

MARC

12-03-25

4. NEW PVC ROOFING SYSTEM TO BE CLASS A ROOF

FLASHING AND EDGE CONDITION NOTES

SEE DETAIL 4- AND 5- FOR TYPICAL ROOFING, 3.

TO BE PAINTED

ALL EXPOSED EXISTING SURFACES OF ROOF ASSEMBLY 2.

ASSEMBLY TO BE PAINTED

ALL EXPOSED WOOD AND FLASHING SURFACES OF ROOF 1.

NEW ROOF DRAIN DETAIL

NTS

EXISTING ROOFING SYSTEM REMOVAL DETAIL

NTS

NEW EQUIP CURB DETAIL

NTS

FLASHING AT (E) VENT PIPE PENETRATION

NTS

NEW ROOFING SYSTEM & EDGE DETAIL

NTS

MAX. 6" O.C.

(N) TERM BAR W/ FASTENERS @

COUNTERFLASHING EXTENSION

(N) 20 GAUGE GSM

WASHERS @ MAX. 2'-0"O.C. (MIN. 3

(N) SST SCREWS W/ SST EPDM

(N) GSM COUNTERFLASHING

(N) SEALANT

(N) ROOF MEMBRANE

MEMBRANE

CURB & HOT-AIR WELDED TO

(N) MEMBRANE FLASHING ADHERED TO

PENETRATION

LINE/PLUMBING PIPE

(E)SERVICE

(N) SST DRAWBAND

(N) SEALANT

FLASHING

(N) MEMBRANE

(N) ROOF MEMBRANE

2'' 2''8

M

N

WOOD NAILER

NEW PT

NEW CLAD METAL NOSING

AT MAX.@16"O.C.

STAINLESS TEEL SCREWS

CLEAT, FASTENED WITH

NEW 20 GAUGE GSM CONT.

HOT-AIR WELDED

NEW MEMBRANE FLASHING,

MEMBRANE

NEW 60 MIL PVC

EXISTING THICKNESS

AS REQUIRED. MATCH

ROOF INSULATION BOARD

2" POLYISOCYANURATE

NEW RIGID

ROOF BOARD

FIBERGLASS-FACED

NEW 1/2"

4"

CORNER

AT 4'-0" CENTER AND

ANCHOR BOLT PATTERN IS

EXISTING. EXISTING

NAILER TO MATCH

NEW 4 X 10 SHAPED WOOD

SIDING TO REMAIN

EXISTING FLUTED STEEL

WALL BELOW

EXISTING CMU

DECKING

STEEL

EXISTING

REQUIRED)

(NEW AS

BARRIER

VAPOR

EXISTING

BE REMOVED

PLY MEMBRANE TO

EXISTING SINGLE

AS REQUIRED

BE REMOVED

INSULATION TO

EXISTING

REQUIRED

REMOVED AS

BOARD TO BE

EXISTING ROOF

TO BE REMOVED

X 10 WOOD NAILER

EXISTING SHAPED 4

REMAIN

SIDING TO

FLUTED STEEL

EXISTING

TO REMAIN

WALL BELOW

EXISTING CMU

REMAIN

DECKING TO

STEEL

EXISTING

AS REQUIRED

BE REMOVED

BARRIER TO

VAPOR

EXISTING

MATCH EXISTING

NEW ROOF DRAIN SIZED TO

FACED ROOF BOARD

NEW 1/2" FIBERGLASS-

DRAIN PAN

INSULATION ROOF

TAPERED RIGID

NEW PRE-MOLDED

ROOF MEMBRANE

NEW 60 MIL PVC

STEEL DECKING

STEEL PLATE WELDED TO

EXISTING 24 X 24 X 3/16

1/4" X 1/4

ANGLE L1-1/4 X

EXISTING CONTINUOUS

DEPARTMENT OF TRANSPORTATION