Addendum No. 2.pdf

Addendum No. 2

MAA-CO-26-022 Federal Funded Addendum No. 2

Wilson Point Road SWM Improvements

August 10, 2026 at Martin Airport

MARYLAND AVIATION ADMINISTRATION

OFFICE OF PROCUREMENT AND MATERIALS MANAGEMENT

ADDENDUM No. 2 to

TECHNICAL PROVISIONS AND DRAWINGS

for

CONTRACT NO.: MAA-CO-26-022

WILSON POINT ROAD STORMWATER MANAGEMENT IMPROVEMENTS

AT

MARTIN STATE AIRPORT

(advertised) July 16, 2026

IMPORTANT: Bidders must acknowledge receipt of this Addendum. Please sign and date the attached “Acknowledgement of Receipt”. All documents must be fully executed at the time the

Bid is submitted. All information contained herein shall form a part of this Addendum.

The MAA encourages Contractors to return the Addendum Acknowledgement attached to this

Addendum No. 2.

This Addendum forms a part of the Contract Documents and modifies the original Bidding

Documents advertised July 16, 2026.

This Addendum No. 2 consists of 7 pages and the following attachments and revisions:

1. Attachment No. 1 – Pre-Bid Conference Transcript

2. Attachment No. 2 – Pre-Bid Conference RSVP List

3. Attachment No. 3 – Pre-Bid Conference Attendance Sheet

4. Attachment No. 4 – Plan Holders/Bidders list

5. Attachment No. 5 – Technical Specifications

6. Attachment No. 6 – Technical Provisions Part IV – Section 7 – Bid Proposal – Bid

Tabulation Forms

7. Attachment No. 7 – Addendum No. 2 Contract Drawings Revisions (Will be sent to Plan

Holders only under separate cover)

8. Attachment No. 8 – Addendum No. 2 Acknowledgement Form

Addendum Date: August 10, 2026

Bid Due Date: August 13, 2026; 1:00:00 p.m. local time

Revised Bid Due Date: August 20, 2026; 1:00:00 p.m. local time

Bids Delivered to: Submitted on eMaryland Marketplace Advantage (eMAA)

Bid Opening Time: August 13, 2026; 1:05:00 p.m. local time

Revised Bid Opening Date: August 20, 2026; 1:00:00 p.m. local time

RESPONSE TO CONTRACTORS’ QUESTION

DXI Construction

1) Please clarify in further detail what is expected to be included under Bid Item No.1 soil stockpiling and testing for MAA Property?

Response: Bid Item 02 2200.1, Soil Stockpiling and Testing for MAA Property, shall include all labor, materials, equipment, transportation, handling, sampling, testing, reporting, and incidentals necessary to characterize and manage excavated soil designated for potential reuse on MAA property. This item shall include the establishment, maintenance, protection, and removal of stockpile areas; erosion and sediment control measures associated with the stockpile; collection and laboratory analysis of soil samples;

coordination of testing; and preparation and submission of required documentation. The

Contractor shall include all activities necessary to determine the suitability of the material for reuse on MAA property in accordance with the Contract Documents.

2) Please clarify in further detail what is expected to be included under Bid item No. 3 Soil and Ground Water Management plan for Lockheed Martin Property?

Response: Bid Item 02 2200.3, Soil and Groundwater Management Plan for Lockheed

Martin Property, shall include all labor, materials, equipment, supervision, documentation, coordination, monitoring, and incidentals necessary to implement and comply with the requirements of the attached Lockheed Martin Soil and Groundwater Management Plan during construction. This includes, but is not limited to, management, handling, segregation, stockpiling, characterization, transportation, tracking, and disposition of soil and groundwater encountered within the limits of the Lockheed Martin property;

implementation of applicable health and safety requirements; environmental monitoring;

sampling and testing required by the Management Plan; recordkeeping; reporting; and coordination with the Owner, Engineer, and regulatory agencies as required. The attached

Soil and Groundwater Management Plan is provided as part of the Contract Documents and should be used by the Contractor to determine the full scope of work associated with this pay item.

3) Please change Bid item No.2 Contingent Item – Contaminated Soil Removal to a per load item.

Response: A per-load item can introduce significant variability because truck capacities differ and loads may not be full. A cubic yard unit provides a consistent basis for measurement regardless of truck size or load configuration and allows for equitable comparison of bids.

Urban N. Zink Contractor, Inc.

4) Please confirm that the project will be completed in the 7 phases as shown on the plans.

Response: Per Contract Drawings G201 and G202, the project is to be completed in 7 phases with a winter/spring shutdown.

5) Please confirm the anticipated start date for this project.

Response: The anticipated construction contract start date is expected in July 2027, as shown on the conceptual schedule on sheet G202.

6) Please confirm the duration for Phase 1 of the project.

Response: Per Contract Drawings G201 and G202, Phase 1 duration is 45 consecutive calendar days.

7) Please confirm that Phases 2 through 7 starts in Summer of 2028 as stated on the bid documents.

Response: Correct, the phases shown on Sheet G202 depict the conceptual construction schedule which was developed to coincide with the County water and sewer project.

Schedule is subject to change pending coordination with the County water and sewer project.

8) Will the existing topsoil need to be screened?

Response: The Contract Documents do not require screening of existing topsoil. Salvaged topsoil shall comply with the requirements of Section 329115X, including removal of vegetation, roots, debris, stones, and other unsuitable materials, and shall meet the specified topsoil quality requirements. The Contractor may screen the topsoil at their discretion if necessary to achieve compliance with the specification.

9) Will the existing topsoil need to be composted?

Response: The Contract Documents do not require composting of existing or salvaged topsoil. Salvaged topsoil shall comply with the requirements of Section 329115X and be free of unsuitable materials as specified. The Contractor may elect to incorporate compost or other soil amendments at its discretion if necessary to achieve the specified establishment of vegetation.

10) Please confirm that the DBE and MBE requirements for this project is 0%.

Response: The DBE goal for this solicitation is 0%. There are no MBE requirements for this solicitation.

11) Will the staging area require a stone base for the laydown area? If so, what depth?

Response: No stone base for the staging area will be required, as this area consists of aged asphalt and/or gravel surface.

12) Will temporary fence be required around the contractor staging area?

Response: Temporary fence around the contractor staging area is not a contract requirement, as this area is already within a fenced area. If the Contractor wants additional fencing, it will be at the contractor's cost.

13) Will caulking / sealant be required for the concrete work on this project?

Response: Caulking/sealant is not required for the concrete work around the bulkhead.

14) See sheet C511, will steel sheet piles be required or can a coffer dam be installed?

Response: The coffer dam design (using sheet piles or other method) is delegated to the

Contractor. Sheet piles for use as the coffer dam are not required by the Contract

Documents. The Contractor shall be responsible for design using any material (sheet pile or otherwise), including all associated exploratory surveys, geotechnical investigations and additional permitting if needed.

15) See unit price item 36, will an arborist be required for this work?

Response: An arborist will not be required for tree/vegetation clearing and grubbing.

16) See unit price item 57, what items fall under Temporary Construction Items?

Response: This pay item is intended to cover temporary construction-related items and activities that are necessary to complete the work but are not specifically identified for payment under another contract pay item. Contractors should refer to Section 01 0004X –

Temporary Construction Items for a complete description of the requirements.

17) See unit price item 60, what items fall under Miscellaneous Construction Allowance?

Response: The Miscellaneous Construction Allowance is intended to provide funding for unforeseen or indeterminate work that may be identified during construction and authorized by the MAA. This allowance may be used for work that is not reasonably quantifiable during design and is not specifically included in another contract pay item. Expenditures under this allowance shall be performed only when authorized by the MAA and shall be supported in accordance with the Contract Documents.

18) See unit price item 62, what items fall under Utility Relocation Allowance?

Response: The Utility Relocation Allowance may be used for owner-directed utility relocation or utility conflict resolution activities, including utility adjustments, protection in place, temporary utility support, emergency repairs, coordination with utility owners, and other unforeseen utility-related work that is not specifically included under another contract pay item. The allowance is intended to address utility conditions encountered during construction that could not be reasonably determined during design. Work performed under this allowance shall require prior authorization by the MAA and/or

Engineer.

19) See Sheet C123, please confirm if the asphalt / gravel area will need to be restored with asphalt once the RCP storm line is installed.

Response: The surface material can be replaced with graded aggregate base material in this location.

20) Please confirm if our crews will be required to wear hazmat suits / masks to handle the potential contaminated soils for this project.

Response: The staff would not be required to wear hazmat suits unless they were to find contaminated soils through visual or olfactory identification of contamination. OSHA

Level D worker protection would be the standard unless contamination is discovered.

Level D protection includes standard construction worker clothing:

• Coveralls (Work Uniform)

• Safety boots/shoes

• Safety glasses or chemical splash goggles

• Hard Hat

No respiratory protection is required under Level D and there is no chemical protective suit.

The Contractor will need to follow all of the environmental covenants for this property.

The covenants are identified in the Lockheed Martin Soil and Groundwater Management

Plan for Blocks A, B, D, D Panhandle, F, G and H.

ADDENDUM TO TECHNICAL PROVISIONS

Part I General Information:

No changes.

Part II Technical Specifications:

Section 01 2100 Allowances (Reissued Specification)

1. REPLACE Section 01 2100 specification in its entirety with revised Section 01 2100 specification, attached to this addendum (Attachment No. 5)

a. Replaced miscellaneous construction allowance amount

Section 33 4200 Stormwater Conveyance (Reissued Specification)

1. REPLACE Section 33 4200 specification in its entirety with revised Section 33 4200

a. Added section relevant Elliptical Pipe ASTM C507

b. Replaced Elliptical Pipe Class B with Elliptical Pipe Class C in the pay items

Item 51 0070 Excavation and Embankment (Reissued Specification)

1. REPLACE Item 51 0070 specification in its entirety with revised Item 51 0070

a. Added geotextile

Item 51 0360 Sign Supports (Reissued Specification)

1. REPLACE Item 51 0360 specification in its entirety with revised Item 51 0360

a. Added requirement for small structure sign

b. Added new pay item for small structure sign

Part III Wage Rates:

No changes.

Part IV Bid Forms:

1. REPLACE Section 7 – Bid Proposal, pages BF-1 – BF-8, with revised Section 7 – Bid

Proposal, dated Addendum No. 2 – August 10, 2026 pages BF-1 – BF-8 attached to this addendum and see electronic file. (Attachment No. 6)

ADDENDUM TO CONTRACT DRAWINGS

General Note: Sheets with changes listed below and not reissued with this Addendum will be issued with the Conformed Documents to the successful bidder.

Sheet No. G001 – Index of Drawings

1. REVISE the Index of Drawings to add new sheet C126 .

Sheet No. C124 – Roadway Crossing Storm Drain Plan (Reissued Sheet)

1. REPLACE sheet with revised C124 sheet dated 08/10/26 attached to this addendum

(Attachment No. 7)

Sheet No. C125 – Roadway Crossing Notes, Details And Cross Sections (Reissued Sheet)

1. REPLACE sheet with revised C125 sheet dated 08/10/26 attached to this addendum

(Attachment No. 7).

Sheet No. C126 – Roadway Crossing Notes and Details (New Sheet)

1. ADD new sheet C126 dated 08/10/26 attached to this addendum (Attachment No. 7)

Sheet No. C201 – Storm Drain Profiles - 1 (Reissued Sheet)

1. REPLACE sheet with revised C201 sheet dated 08/10/26 attached to this addendum

Sheet No. C401 – Erosion and Sediment Control Plan – 1 (Reissued Sheet)

1. REPLACE sheet with revised C401 sheet dated 08/10/26 attached to this addendum

Sheet No. C402 – Erosion and Sediment Control Plan – 2 (Reissued Sheet)

1. REPLACE sheet with revised C402 sheet dated 08/10/26 attached to this addendum

Sheet No. C403 – Erosion and Sediment Control Plan – 3 (Reissued Sheet)

1. REPLACE sheet with revised C403 sheet dated 08/10/26 attached to this addendum

Sheet No. C505 – Vegetative Stabilization Notes - 3 (Reissued Sheet)

1. REPLACE sheet with revised C505 sheet dated 08/10/26 attached to this addendum

Sheet No. C507 – Erosion and Sediment Control Details – 2 (Reissued Sheet)

1. REPLACE sheet with revised C507 sheet dated 08/10/26 attached to this addendum

Sheet No. C521 – Drainage Details - 1 (Reissued Sheet)

1. REPLACE sheet with revised C521 sheet dated 08/10/26 attached to this addendum

END OF ADDENDUM No. 2