5.3 Construction Duration and Phasing

5.3.1 Construction Durations and Blackout Dates

Construction durations shall be estimated during the design phase and documented in the Contract Documents. The Consultant shall coordinate with MDOT MAA Operations to determine the appropriate work hours and dates of work permitted for the project. Annual construction blackout dates occur when airport traffic is expected to be higher than usual and therefore no construction activity is to take place. Blackout dates for consideration and discussion are listed below.

A. BWI Marshall:

1. President’s Day weekend (Sat – M)

2. Spring Break/Easter (full week prior to Easter)

3. Memorial Day weekend (Sat – M)

4. Fourth of July and adjacent weekend

5. Labor Day weekend (Sat – M)

6. Thanksgiving (M – Su)

7. Christmas & New Year’s (weekend prior to Christmas – weekend after New Year’s)

B. Martin State:

1. All dates listed above

2. Weekends

Consultants shall determine the applicable construction blackout dates for each project on a case-by-case basis with the Project Manager and the MDOT MAA office with operational responsibility (i.e. Airport Operations, Ground Transportation, etc.) based on the type of work, location of the project, as well as the year’s calendar.

5.3.2 Construction Phasing Plans

Construction Phasing Plans shall be included for all landside tasks involving multiple phases of construction. Phasing plans shall include the following information, at minimum:

A. Project Work Area (shaded/hatched) [phased work areas on the same plan sheet shall have different, distinguishable hatches, if applicable]

B. Contractor access/haul routes

C. Description of work

D. Phase Durations and/or Total Task Duration

E. Closures for roads or lanes of roads – this note shall also refer to the Maintenance of Traffic plan

F. Work hours (if applicable)

G. Liquidated damages if determined to be different than specified in the Comp Paving Technical Specifications

5.3.3 Construction Staging and Stockpile Areas

Construction Staging areas are defined as, “the locations in which the general contractor stores construction equipment and materials for the needs of the contract.” The Consultant shall identify these areas within the contract documents and on the general site plan or make a note that areas will be determined once the contract has received a “notice to proceed.”

Stockpile Areas are to be defined as, “a mound or pile of soil protected by appropriately designed erosion and sediment control measures.” For projects involving site work/earth disturbance, the Consultant shall provide a designated location for the temporary storage of soil that controls the potential for erosion, sedimentation, and changes to drainage patterns. Stockpile areas are designated to store soil and other erodible materials, such as sand, millings, and fine aggregate. The Consultant may identify separate construction stockpiling areas within the contract documents on the general site plan and on the erosion and sediment control drawings. MDE erosion and sediment control measure B-4-8 STANDARDS AND SPECIFICATIONS FOR STOCKPILE AREA shall be referenced for these areas and the areas shall be located within the Limits of Disturbance (LOD).

Below is a graphic map depicting available areas for use as off-site staging areas. The graphic includes available lot size, an indication as to whether the lot is paved and brief comments about the site. The consultant shall determine which lot to use as a staging area based upon the type of construction being proposed and the locality of the work. The consultant shall coordinate on-site and off-site staging areas with the MDOT MAA Project Manager and consult each agency identified on the map to confirm the availability and applicability of the proposed on-site and off-site staging area(s).

If there is a requirement to modify or change the construction staging area after the contract documents are issued, the consultant shall follow the same procedures to identify, coordinate, and design additional construction staging areas. Any off-site stockpiles outside of the approved project’s LOD will be required to have either a separate ESC approval (State, federal, or local) or a permit modification obtained for the MDE permit associated with the MDOT MAA project. All MDE coordination shall be through the MDOT MAA Environmental Planning Section.

The consultant shall identify construction staging areas within the contract documents. The consultant shall coordinate on-site and off-site staging areas with the MDOT MAA Project Manager and consult each agency identified on the map to confirm the availability and applicability of the proposed on-site and off-site staging area(s). On the following page is a graphic map depicting available areas for use as off-site staging areas. The graphic includes available lot size, an indication as to whether the lot is paved and brief comments about the site. The consultant shall determine which lot to use as a staging area based upon the type of construction being proposed and the locality of the work.

Construction Staging Areas

5.3.4 Runway 10-28 and 15R-33L Intersection Closure

Construction of utilities within the safety areas of the intersection of Runways 10-28 and 15R-33L, which will require simultaneous closure of both major runways, will not be permitted. Alternate routes or methods, such as crossing one runway point at a time and remaining clear of the adjacent runway safety area, should be used. The Director of the Office of Engineering & Construction must approve any project that requires closure of both runways.

This allows BWI Marshall to maintain airport capacity during utility construction by keeping at least one major runway open. It provides additional periods of time for accessing work areas for utility installation, which would be limited if both runways required closing. It also alleviates closures of both major runways for subsequent maintenance, emergency repairs, periodic inspections, tie-ins, etc. These types of occurrences are even more problematic, as they may be unscheduled and occur at peak times.