Addendum 3 - 7-30-2020.pdf

ADDENDUM NO. 3

July 31, 2020

STATE OF MARYLAND

DEPARTMENT OF GENERAL SERVICES

Ellington Churchill, Jr., Secretary

Project No. P-008-181-010

Asphalt Resurfacing

DNR Deep Creek Lake State Park

This Addendum will clarify, add to, delete from, correct and/or change the bid documents for the project referenced above to the extent indicated. This Addendum is hereby made a part of the bid documents on which the contract will be based. By submitting a bid for this solicitation you acknowledge receipt of this addendum. All questions must be in writing and addressed to the

Procurement Officer, Jessica Matos.

This addendum includes the following:

-The Bid Due Date has been extended to August 17, 2020 @ 2:00 p.m.

-Answers to questions provided by contractors during the pre bid meeting not answered within the specifications

-Clarification of items within the specifications

-Additions to the scope of work for the project, including drawings

The following changes shall be incorporated into the specifications for this project, to include

Add Alternate # 1, and Drawings:

Scope Modification – Additional Resurfacing

Scope:

The scope for the Base Bid shall include but is not limited to the following:

a. This Addendum will add the areas shown on drawing C.4 to the project.

The proposed work will utilize Unit Prices set forth under the current base bid. The quantities shown below will be added to those associated with the base bid if awarded.

i. Full depth (12”) patching of existing pavement.

Add 50 SY to Unit Price #1.

ii. Installation of wedge and level course of hot mix asphalt.

Add 40 Tons to Unit Price #2.

iii. Installation of 2” thick bituminous concrete overlay type “SF” surface course over approximately 7,300 sq. yds. of existing pavement.

Add 560 Tons to Unit Price #3.

iv. Installation of paving fabric prior to resurfacing.

Add 5,065 SY to Unit Price # 4.

v. Mill existing asphalt pavement where required.

Add 100 SY to Unit Price #5.

vi. Backfill new pavement edges with CR-6.

Add 50 Tons to Unit Price #6

vii. Installation of pavement striping, painting to include the following:

Add to specified quantities.

16” wide Painted Stop Bar - Approximately 16 lf

Single 4” wide line striping – Approximately 1,200 lf

viii. Site cleanup to include seeding and mulching all disturbed areas.

ix. Removal and proper disposal of all debris off state property.

NOTE: All quantities and sizes listed above are approximate. The

Contractor shall be responsible to obtain his or her own measurements for the project and bidding purposes.

b. Unit Prices:

The quantities shown below have been revised to include the additional work covered in the addendum.

i. Unit Price # 1 “Patching”

Estimated Quantity: 550 Square Yards.

ii. Unit Price # 2 “Wedge and Level”

Estimated Quantity: 240 Tons

iii. Unit Price # 3 “Bituminous Concrete Overlay”

Estimated Quantity: 2,410 Tons

iv. Unit Price # 4 “Paving Fabric Installation”

Estimated Quantity: 20,065 Square Yards.

v. Unit Price # 5 “Asphalt Milling”

Estimated Quantity: 400 Square Yards.

vi. Unit Price # 6 “CR-6 Stone Shoulders / Fill”

Estimated Quantity: 300 Tons

NOTE: Unit Prices will be used to increase/decrease the final contract price based on actual quantities installed.

Materials and Supplies:

a. All of the required materials and supplies to perform this additional work shall be as specified under the base bid for the project.

Method of Work:

a. Method of work for this additional scope shall be as specified under the base bid for the project.

Drawings:

a. Sheet C.4 will be added to the drawing sheet set.

End Scope Changes to Base Bid

Add Alternate # 1 – Replace Campground Entrance Gate

Scope:

Add Alternate # 1 shall include but is not limited to the following:

a. The removal and replacement of the existing entry gate, to include the following components: operator, lift arms, keypad, bollards, concrete pad, conduit, and control wiring required for a complete installation.

b. The installation of approximately 1,000 SF reinforced concrete pad to include a 50 SF raised island.

c. The installation of approximately five (5) concrete reinforced guard bollards, with reflective UVR-HDPE coverings.

d. Restoration of site to a preconstruction condition, seed and mulch all disturbed areas.

e. Removal and proper disposal of all debris off state property.

NOTE: All quantities listed above as approximate shall be confirmed by the contractor for the purpose of bidding. It shall be the responsibility of the contractor to determine the exact quantities.

Qualifications of the Contractor:

a. All electrical work shall be performed by a licensed electrical contractor approved to perform work in Garrett County.

Materials and Supplies:

a. Barrier Gate / Operator – Shall be “continuous duty” as manufactured by Lift

Master – MAT High Performance Commercial Barrier Gate and High

Performance Traffic DC Barrier Gate Operators, or approved equal. Operators shall be equipped with a battery backup capable of providing up to 900 operations, and gate shall be manual operable in the event the power loss exceeds the gates battery cycles. Operators shall be a min ½ horse power motor capable of providing up to 6,000 cycles per day. Breakaway arms shall be 14’ long, with soft padding, and equipped with built in LED illumination.

b. Key Pads – Shall be Lift Master – Commercial Access Control Receiver –

STAR1000 or approved equal. Key pad and receiver shall be compatible for up to 1000 remotes and combinations. 30 programmed remotes shall be provided with the receiver. Remotes shall be single button Passport Lite

Remote Controls or approved equal.

c. Pedestals – Shall be Lift Master Model PED4272, black, double height pad mount, or approved equal. Mounting pads shall be at 42” and 72” above the roadway.

d. Photo Eye – Shall be Heavy Duty Retro-Reflective Photo Eye as manufactured by Lift Master – AOMRON or approved equal.

e. Conduit – Shall be schedule 80 PVC to include all fittings and sweeps for a complete installation.

f. Control Wiring – Shall be properly sized as recommended by the gate manufacturer.

g. Power Supply- 10 gauge power supply wiring in conduit from the breaker panel shall be reused. New breakers shall be installed per code requirements.

New breakers shall be 20 Amp Square D, compatible with the panel box.

h. Bollards – Shall be sch. 40 steel pipe, six (6) inch dia., six (6)’ in length.

i. Pipe Bollard Sleeve - Shall be 6.5” x 48”, reflective, UV Resistant, PVC bollard sleeve, over the guard bollards. Color to be determined by Park

Manager. Bollards shall be as manufactured by Barco Products or approved equal.

j. Concrete – Shall be SHA approved Mix # 3, 3,500 air entrained concrete.

Sealant shall be Quikrete waterproofing sealer or approved equal.

k. Reinforcement - Shall be minimum #4 rebar installed in a 12” O.C. grid to include all chairs, ties, etc. for a complete installation.

l. Expansion Joint: Shall be 4" wide x ½" thick conforming to ASTM D- 1751 or ASTM D-1752 requirements.

m. Caulk Sealant: Shall be self-leveling, non-priming, grade moisture curing, polyurethane, sealant caulk rated at 20-year life expectancy.

n. Concrete Pad Base Material: Shall be SHA approved graded aggregate sub-base (CR-6).

o. Timber Posts: Shall be Pressure-Treated Lumber; 6x6 ACQ or MCA pressure-treated (PT) yellow pine, grade #2 or better, treated to a retention level of 0.25 lbs./cu ft.

Method of Work:

a. The Contractor shall secure and tag out power supply to the existing swing gate operator in the breaker panel as required. Properly secure both swing gates in the open position out of the way of traffic. Properly disconnect and remove the existing swing gate operator, loop detector, keypad, underground egress loop and the slab.

b. The Contractor shall install concrete pad according to drawing C.5. Excavate site as necessary to insure that the finished slab elevation is flush with the new roadway surface. The island shall be raised a min of 3” above slab grade where the new gate operator and key pads will be mounted. Properly level and compact sub-base material (minimum of 8”) and install necessary form work for the proposed slab as required. All forms shall be square, level, and well staked to insure adequate stabilization.

Actual slab shall be sized as follows: 28’ wide x 36’ long x 8” thick.

c. Install and inspect all electrical conduits prior to pouring concrete. Power and control wiring should be run in separate conduits.

d. Install fixed bollard posts as shown on the plans, at each of the four corners of the “operator island”, and adjacent to the entrance gate. Posts shall be set plumb in concrete, and each post shall be filled with concrete. Install the

HDPE bollard covers after the concrete has cured.

e. The finished slab surface shall be a trowel finish flush to new asphalt, with the island having a trowel finish and chamfered edges. Care shall be taken to prevent honeycombing along the edges. Concrete shall be cured in accordance with the American Concrete Institute’s recommendation.

f. Install the operator so that the output shaft is on the side closest to the gate.

Secure the operator to the pad. It is very important that the operator be level and square to the gate. Install the illuminated breakaway arm and the control arm to the gate bracket according to manufacturer’s instructions.

g. Install new timber post beyond the lane of travel, opposite the exit gate operator, to receive the specified photo eye sensor. Ensure the eye and photo sensor are properly aligned and calibrated.

h. Properly mount the new pedestal to the island according to manufacturer’s recommendations, and install and connect the new keypads to the pedestal.

i. Connect the power line to the swing gate operator according to manufacturer’s instructions. Test swing the gate operator to ensure proper operations.

j. Program the operator so that the keypad shall be used to open the gate to enter the facility and the closure shall be initiated by time delay. To exit the facility, the photo eye shall be used to open the gate and the closure shall be initiated by time delay.

k. Provide and program the thirty (30) remotes as specified for use by the facility.

l. Instruction shall be provided as required for operating the system. Hands-on demonstrations of the operation of all system components and the entire system including program changes shall be provided.

m. Properly dispose of construction debris from the job site and leave it in a pre-construction condition.

General Requirements:

a. All electrical work shall be inspected and approved by a Non-Governmental

Inspection Agency approved by the State Fire Marshall’s Office. A copy of the approved inspection certificate shall be provided to the State prior to final project acceptance.

Drawings:

a. Sheet C.5 will be added to the drawing sheet set.

End Add Alternate # 1

Answers to Contractor Questions:

Q: Does the existing asphalt being resurfaced contain paving fabric?

A: No, fabric is not present in any part of the work areas associated with the project.

End Contractor Questions

Scheduling Requirements:

All work associated with the resurfacing of the campground entrance and Loop A sites shall be performed between the following date ranges:

April 1st 2021 – May 19th 2021

This will include the work covered under Add Alternate # 1 – Replace Campground Entrance

Gate, if selected. Remaining work schedule will be determined at time of award.

Contract duration shall be changed from 90 calendar days to 120 calendar days.

End Scheduling Requirements

Respectfully Submitted, Andrew E. Hady

Andrew Hady

Project Engineer / Architect

MD Dept. of Natural Resources

Office – 301-777-0130

All other terms, conditions and specifications remain unchanged

- END OF ADDENDUM NO. 3 -

Issued by:

State of Maryland

Department of General Services

Office of Procurement & Logistics

301 West Preston Street

Room M-8

Baltimore, Maryland 21201

Jessica Matos Jessica Matos

Procurement Officer