Amendment 0002 - NP-NAMA 12(3).pdf

(x)

693C7321B000015 x x

1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE

RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR

OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

x

ASHBURN VA 20147

ATTN:CONSTRUCTION

693C73

SUITE E2-3-300

QUANTUM PARK, 22001 LOUDOUN COUNTY PKWY

EASTERN FEDERAL LANDS HIGHWAY DIVISION

FEDERAL HIGHWAY ADMINISTRATION

ASHBURN VA 20147

ATTN:ACQUISITIONS

693C73

SUITE E2-3-300

QUANTUM PARK, 22001 LOUDOUN COUNTY PKWY

EASTERN FEDERAL LANDS HIGHWAY DIVISION

FEDERAL HIGHWAY ADMINISTRATION

See Block 1406/22/20210002

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

05/20/2021

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

E. IMPORTANT: Contractor is not is required to sign this document and return __________________ copies to the issuing office.

ORDER NO. IN ITEM 10A.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

Project NP-NAMA 12(3)

The purpose of this Amendment is to:

1) Revise Subsection 634.12 of the Special Contract Requirements (J Pages) to clarify the measurement of thermoplastic rumble strip pavement markings.

2) Revise plan sheet S05 to correct the detail name and number.

3) Provide Supplemental Section 636 Specifications.

Continued...

15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

NAME OF OFFEROR OR CONTRACTOR

2 12

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGE OF

(A) (B) (C) (D) (E) (F)

693C7321B000015/0002

4) Provide a summary of responses to questions/clarifications asked by potential bidders.

The Bid Opening date of July 8, 2021 at 2:00 p.m.

EST remains unchanged.

NSN 7540-01-152-8067 OPTIONAL FORM 336 (4-86)

Sponsored by GSA

FAR (48 CFR) 53.110

Amendment No. 0002

Info Page 1 of 1

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Amendment No. 0002 Project NP-NAMA 12(3)

Rehabilitation of Outlet Bridge and Resurfacing of East Basin Drive Solicitation: 693C73-21-B-000015

The purpose of this Amendment is to:

1) Revise Subsection 634.12 of the Special Contract Requirements (J Pages) to clarify the measurement of thermoplastic rumble strip pavement markings.

2) Revise plan sheet S05 to correct the detail name and number.

3) Provide Supplemental Section 636 Specifications.

4) Provide a summary of responses to questions/clarifications asked by potential bidders.

The Bid Opening date of July 8, 2021 at 2:00 p.m. EST remains unchanged.

J Pages and Plan Sheet Changes 1 of 1

1) Special Contract Requirements (J Pages) changes

Add the following to Subsection 634.12 of the Special Contract Requirements, page J-77:

When multiple layers of pavement markings are required, measure each layer.

2) Plan Sheet changes

Delete Plan Sheet S05 and substitute the amended Plan Sheet S05.

Supplemental Section 636 Specifications

RECTANGULAR RAPID FLASHING BEACON WITH LARGE LED ARRAYS

1.0 Description

The Manufacturer shall provide a Rectangular Rapid Flashing Beacon (RRFB) LED Light Assembly with Large LED Arrays. The RRFB shall be powered by a solar-assisted battery and shall utilize spread spectrum wireless activation, providing savings in time and money with respect to installation and operation. The RRFB shall be pedestrian-activated by pushbutton.

2.0 General Requirements

RRFB shall be in conformance with all applicable MUTCD standards and guidelines, and shall exceed the minimum requirements specified in FHWA Memorandum IA-21, Interim Approval for Optional Use of Rectangular Rapid Flashing Beacons. It shall consist of rapidly and alternately flashed rectangular yellow indications having LED-array based pulsing light sources, and shall be designed, located, and operated in accordance with the detailed requirements specified in Memorandum IA-21, Interim Approval for Optional Use of RRFB and subsequent amendments as detailed herein.

RRFB shall be installed to function only as a Warning Beacon; shall be used only to supplement a W11-2 (Pedestrian) or S1-1 (School) crossing warning sign with a diagonal downward arrow (W16-7p) plaque, located at or immediately adjacent to a marked crosswalk.

2.1 Each RRFB shall be a complete assembly including Controller, Battery, Radio, Solar Panel, LED indications in a Light Bar, and Signage, Pushbutton, Pole Shaft and Pedestal Base.

2.2 An RRFB assembly will have two (2) light bars (mounted back-to-back, facing dual directions).

2.3 Each Light Bar shall house two rapidly and alternately flashing rectangular yellow indications and one yellow side-mounted pedestrian indication, each with an LED-array based light source. The LED-based pulsing light arrays shall be designed, located and operated in accordance with the detailed requirements as specified on the plans. Active vehicle indications shall be visible at distances over 1000 feet during the day and over 1 mile at night.

2.4 Individual components shall be replaceable independently of other components, equipped with approved terminal strips or wire-end molded connectors.

3.0 Functional Requirements

Per FHWA guidelines, RRFB shall be normally dark, shall initiate operation only upon pedestrian actuation, and shall cease operation at a predetermined time after the pedestrian actuation. The flash cycle duration should be based on the MUTCD procedures for timing of pedestrian clearance times for pedestrian signals: refer to MUTCD 2009 Section 4E.06 and any State-specified regulations.

As a specific exception to requirements for the flash rate of beacons as stated in 2003 MUTCD Section 4K.01, RRFBs shall use a much faster flash rate. Each of the two yellow vehicle indications of an RRFB shall have 70 to 80 periods of flashing per minute and shall have alternating, but approximately equal, periods of rapid flashing light emissions and dark operation. During each of its 70 to 80 flashing periods per minute, one of the yellow indications shall emit two medium rapid pulses of light and the other yellow indication shall emit four short rapid pulses of light followed by a long pulse.

The outside edges of the RRFB indications, including the Light Bar, shall not project beyond the outside edges of the W11-2 or S1-1, The flash rate of each individual yellow indication, as applied over the full on-off sequence of a flashing period of the indication, shall not be between 5 and 30 flashes per second, to avoid frequencies that might cause seizures.

3.1 RRFB system shall have the capability of web-based cellular communication with programmable aspects as outlined in Section 4.

3.2 Each RRFB shall operate on solar-assisted battery power.

3.3 Upon activation by ADA-compliant pushbutton, a 900 MHz transceiver radio using spread spectrum radio frequency to minimize RF interference shall wirelessly activate all integral indications. When activated, the two yellow indications in each RRFB shall flash in a rapidly alternating “wig-wag” flashing sequence (left indication on, then right indication on).

3.4 The light intensity of the vehicle indications shall meet the minimum specifications of Society of Automotive Engineers (SAE) standard J595 (Directional Flashing Optical Warning Devices for Authorized Emergency, Maintenance, and Service Vehicles) dated November 2008. Manufacturer Certification of Compliance shall be provided upon request.

3.5 When activated, all indications associated with a given crosswalk (including those with an advance crossing sign, if used) shall simultaneously commence operation of their alternating rapid flashing within 120msec, and shall cease operation at a predetermined time after the pedestrian actuation.

3.6 The duration of the flash cycle shall be programmable from 1 second to 24 hours, in increments of seconds, minutes and hours.

3.7 The Pedestrian indication shall be directed at and visible to pedestrians in the crosswalk, and it shall flash concurrently with the vehicle indications to give confirmation that the RRFB is in operation.

3.8 The system shall include an actuation counter providing data that can be downloaded on-site to a laptop computer using DB9 or USB type cables.

3.9 Autonomy with a fully charged battery shall be up to 30 days without sun, dependent upon ambient temperature and number of activations.

4.0 Materials

The Manufacturer shall provide a complete solar-powered RRFB assembly, consisting of but not limited to the Light Bar with LED indications, solar panel, battery, mounting hardware and electrical components including wiring and solid-state circuit boards. The RRFB assembly shall include the following items:

4.1 Light Bar Housing and Indications

a. The Light Bar housing shall be constructed of durable, corrosion-resistant powder-coated aluminum with stainless steel fasteners.

b. Enclosed components shall be modular in design whereby any component can be easily replaced using common hand tools, without having to remove the housing from the pole.

c. All mounting hardware required for mounting the Light Bar housing shall be provided, and shall be stainless steel.

e. Each of the two vehicle RRFB LED indications shall be approximately 7.25" wide x 3" high.

f. A pedestrian LED indication, approximately 0.5" wide x 2.5" high, shall be side-mounted in the Light Bar housing to be directed at and visible to pedestrians in the crosswalk.

g. The LEDs used shall be rated for a minimum 15-year life span.

4.2 Controller

a. The Controller shall be housed in a NEMA 4X rated aluminum enclosure, intended for indoor or outdoor use, primarily to provide a degree of protection against corrosion, windblown dust and rain, splashing water, hose-directed water, and damage from ice formation.

b. The LED light outputs and flash pattern shall be completely programmable, with the capability to actuate RRFB, round LED signal beacons and LED-enhanced signs.

c. The flashing output shall have 70 to 80 periods of flashing per minute, during which one of the yellow indications shall emit two medium pulses of light and the other yellow indication shall emit four short rapid pulses of light followed by a long pulse. The output current shall be maintained as programmed for the duration of the pulse. The flashing output shall be programmable.

d. The Controller shall be reconfigurable if future MUTCD or State guidelines specify a different flash pattern.

e. The Controller shall be capable of storing input count data in preset intervals, with downloadable capabilities using optional Windows-based PC software program and standard RS232 programming cable.

f. The Controller shall be, in the unlikely event of failure, replaceable independently of other components.

4.3 Battery

a. The Battery shall be a 12VDC Absorbed Glass Mat (AGM) sealed lead-acid, maintenance-free battery.

b. The Battery shall be rated at 45AH minimum and shall conform to Battery Council International (BCI) specifications.

c. The Battery shall be solar-charged with a capacity up to 30 days of autonomy without sunlight, varying with ambient temperature and number of activations.

d. The Battery shall be replaceable independently of other components.

e. The Battery shall have a minimum operating temperature range of -76º to 140ºF (-60º to 60ºC).

4.4 Wireless Transceiver Radio

a. Radio control shall be solar-powered, operating on a FCC-approved 900mhz frequency, hopping spread spectrum network with a normal operating range of 1000 feet.

b. Radios shall provide wireless communication between the Assemblies to integrate the pushbutton activation of indications.

c. To ensure all integral indications consistently flash in unison, the Radio shall synchronize the Controllers to activate the indications within 120msec of one other and remain synchronized throughout the duration of the flashing cycle.

d. Radio systems shall operate from 3.6 VDC to 15VDC

e. The Radio shall be, in the unlikely event of failure, replaceable independently of other components.

f. The Radio shall have a minimum operating temperature range of -30ºF to 165ºF (-34.4º to 73.8ºC).

4.5 Solar Panel

a. The Solar Panel shall provide 55 watts at peak total output.

b. The Solar Panel shall be affixed to an aluminum plate and bracket, adjustable at an angle of 45°- 60° to facilitate adjustment for maximum solar collection and optimal battery strength.

c. The Solar Panel Assembly (panel, plate and bracket) shall be mounted on a 360º rotatable pole cap mount, to facilitate adjustment for maximum solar collection and optimal battery strength.

d. Rated for 90mph wind conditions

e. The Solar Panel shall have a minimum operating temperature range of -40º to 185ºF (-40º to 85ºC).

4.6 Signs and Plaques

a. All signs shall conform to MUTCD standards.

b. All sign blanks and plaques shall be Federally specified .080 gauge, 5052 aluminum.

c. Unless specified otherwise, sign sheeting shall be diamond grade cubed or equivalent prismatic sheeting, with anti-graffiti overlay.

d. All sign assemblies shall use provided anti-vandal fasteners and tools to mount components to sign, and sign to fixture.

e. Crossing signs W11-2 or S1-1 shall be a minimum size of 36" as shown on the plans.

f. Crossing plaques (W16-7P Arrow at crosswalk, shall be a minimum size of 30" x 18" as shown on the plans.

g. Pedestrian pushbutton instruction signs (R10-3) shall be furnished, at a minimum size of 5" x 7", to be mounted adjacent to or integral with each pedestrian pushbutton.

4.7 Pushbutton

a. The Push Button shall be capable of continuous operation within a temperature range of -30º to 165ºF (-34º to 74ºC).

b. The Push Button shall be ADA compliant, and shall operate as a normally open (n/o) circuit.

4.8 Pedestal Base & Pole Shaft

System will mount on standard 15ft, 4.5" OD aluminum pedestal pole and signal pedestal base. Pole shall be an extruded seamless Aluminum 6061-T6 Schedule 40 manufactured, conforming to ASTM B 429. Pedestal base shall be aluminum casting made of 319 aluminum alloy. Base shall be threaded to receive a 4" NPT pedestal pole. Base shall include a door opening of minimum of 8.5" square and shall include an aluminum door attached with a stainless-steel bolt.

6.0 Warranty

The system shall be supported by a three-year warranty.

Question/Clarifications

Question/Clarifications

Bidders can send written questions or inquiries for clarification to: eflhd.contracts@dot.gov.

Questions can be submitted at any time, but questions submitted within 7 days of the bid opening may not be answered in time for the bidder to properly incorporate the responses into their bids.

The following questions and issues were submitted via email. The Government response or clarification is provided. Due to the repetitive nature of several questions and issues, the wording of the questions may have been revised and some questions have not been included. The Government’s direct response to the sender may also have been updated below for better clarity.

1. Plan Sheet A04, Note 2 states to protect trees with 6’ high fence (Detail E619-A). How many feet of fence are required? What pay item does the contractor get paid for this work?

Response: The Contractor is responsible for identifying and marking trees that need to be protected for approval by the CO. Payment will be provided under Section 109.05(b).

2. SP Section 636 states to furnish the material conforming to Supplemental Section 636

Specifications. Where can we find those Supplemental Specifications?

Response: Supplemental Section 636 Specifications provided.

3. Will postponing the opening bid date and submittal be considered?

Response: No. Bid Opening date remains as scheduled for July 8, 2021 at 2:00 p.m.