HKRZ192121 Main Ditch Drainage Ph2 SOW.pdf

Statement of Work Project # HKRZ192121

MAIN DITCH DRAINAGE - CULVERTS

188th Civil Engineering Squadron, Arkansas Air National Guard Fort Smith Regional Airport

4850 Leigh Avenue Fort Smith, AR

GENERAL SCOPE

188th Wing Air National Guard Civil Engineering Squadron intends to make improvements to the main drainage ditch that runs through the base. This project consists of remove and replacement of concrete roadway, install new drainage structures, install new sidewalk, and some various finish work.

The site of work is at the 188th Wing, Arkansas ANG, Fort Smith, Arkansas. Contractor will take necessary precautions to avoid damage to surrounding property and/or materials, private or government owned. Contractor will limit his personnel to those areas required to perform work as specified. Contractor will coordinate with the contracting officer and/or his designated representative regarding his proposed work schedule. Contractor will be considered liable for damage caused by negligence on his/her part. Contractor is responsible for employees and sub-contractors.

OVERVIEW

DESCRIPTION OF WORK

1. Demo

a. Contractor will need to demo existing concrete and curbing over the existing

3’x5’ culverts at the intersection of Falcon Way and Phantom Drive. It is required that the contractor have culvert location #3 completed prior to demolition of the intersection. Contractor will also need to remove the existing concrete culverts and return to CE for future use. Contractor will protect culverts during removal if at all possible. Total demo area is approximately 184 square yards.

2. New Construction

a. Contractor will install culverts at three locations along the ditch. Culvert location #1 is under the intersection of Falcon Way and Phantom Drive.

Culvert location #2 is located by building 126. Culvert location #3 is located between the parking lot at the end of Phantom Drive and Falcon Way. See plans for exact locations. There is a total culvert length approximately 192 feet which is roughly 64 feet of culvert at each location. Contractor will provide and install an engineered culvert system that is capable of supporting an HS20 loading and direct vehicular traffic. The culvert must also support a cross sectional area of 120 square feet. Headwalls with toe walls must be constructed to channel water into the culvert on both ends of the culvert.

i. Culvert #1 Information

1. Station 10+00 to 10+64

2. Invert elevation = 454.00 @ 10+00 and 453.80 @ 10+64

3. Culvert running slope = .32%

ii. Culvert #2 Information

1. Station 12+60 to 13+23

2. Invert elevation = 453.00 @ 12+60 and 452.50 @ 13+23

3. Culvert running slope = .79%

iii. Culvert #3 Information

1. Station 19+89 to 20+52

2. Invert elevation = 449.00 @ 19+89 and 448.50 @ 20+52

3. Culvert running slope = .79%

b. The culverts will need to be backfilled using an engineered backfill to allow the construction of sidewalk and vehicular traffic over the culverts. Backfill will need to be compacted to a minimum of 95% of the materials proctor.

c. Contractor will replace removed concrete roadway from the demo section of the SOW with new 8” thick concrete on 6” of aggregate base. Expansion joints will not exceed 15 feet and construction joints will not exceed 90 feet without approval.

d. Contractor will install two 4’x6’ curb inlets where the existing curb turnout was located. Contractor will install approximately 35 linear feet of 15” RCP from the curb inlet to the headwall of culvert #1.

e. Contractor will install 4” thick by 10’ wide sidewalk over the culvert locations #2 & #3. Sidewalk will be placed on top of a minimum of 4” of aggregate at culvert #2 location. Culvert #3 location will be used as a temporary vehicular bridge to cross the ditch while culvert #1 is being constructed. Contractor will construct a temporary road bed over culvert #3 and once culvert #1 is complete to allow traffic; Contractor will cover road bed with 10’ wide sidewalk identical to culvert #2 and topsoil and seed & mulch.

f. There is approximately 110 linear feet of curb and gutter, 170 square yards of sidewalk, 100 tons of aggregate subbase, 2000 cubic yards of backfill, 1440 cubic yards of topsoil, and .13 acres of seed and mulch or hydroseed.

CONSTRUCTION PERFORMANCE PERIOD

The offeror shall identify the proposed construction performance period. The proposed performance period will not exceed 180 days.

SUBMITTALS

• Culvert Design from precast manufacturer

• Seed mix to be used

• Concrete mix design

INVESTIGATION

The offeror shall accomplish the necessary field surveys and investigations by visual inspection of the construction site included in the scope of work as required considering the existing conditions. Inspection may be performed jointly with the BCE or his designated representative identifying and resolving any items requiring special attention.

CLEANUP

Residue, debris, other materials left over from removal and/or installation will be carried off base and disposed of by the contractor in compliance with laws, ordinances, and codes. Work area will be kept clean and neat, maintained in a hazard free.

ENVIRONMENTAL

CONTRACTOR shall be responsible for compliance with EPA/ADEQ requirements and is required to provide a list of proposed hazardous materials that will be used on the project to the Base HAZMART representative prior to commencing work (FAR 52.223-3), (DFARS 252.223-7001).

ASSUMPTIONS/EXCLUSIONS

Contractor’s proposal pricing shall be based on the following assumptions/exclusions:

• The 188th Wing’s mission requirements may, on occasions, limit the availability of the Contractor to access some or all of the project area. The BCE and/or his designated representative, will provide scheduling information to the Contractor as early as possible regarding days or times when the project area will be unavailable for the Contractor.

• The Government shall provide access to all work areas between 8:00 AM and 4:30 PM, central standard time, Monday through Friday, excluding holidays. All work shall be performed during these designated times.

• Contractor shall utilize the 188the Civil Engineering Squadron and the Communications

Group to have the existing utilities located. The 188the CES and CG will locate private lines (water, sewer, sprinkler or irrigation lines, coax, telephone, etc.). A good “locate” is a mark within 18” horizontally from the actual underground facility (per American Public Works Association guidelines). The Contractor is not responsible for damages that occur as a result of a misloaded or “not located” facility. Gas and electric facilities must be located by AOG and OG & E respectively. The marking of utilities must be scheduled and may take several days before completed.

• Contractor to ensure compliance with FAA permit and will be responsible for input of the permit located on the following website and for tracking permit acceptance by the FAA. Time is included in the schedule for this requirement. Ensure 188 CES Deputy Engineer is notified of compliance.

https://oeaaa.faa.gov/oeaaa/external/userMgmt/permissionAction.jsp?action=showLoginForm

CONTRACTOR MANPOWER REPORTING

The contractor shall report ALL contractor labor hours (including subcontractor labor hours) required for performance of services provided under this contract for the AIR NATIONAL GUARD via a secure data collection site. The contractor is required to completely fill in all required data fields using the following web address: http://www.ecmra.mil/

Reporting inputs will be for the labor executed during the period of performance during each Government fiscal year (FY), which runs October 1 through September 30. While inputs may be reported any time during the FY, all data shall be reported no later than October 31 of each calendar year. Contractors may direct questions to the help desk at: http://www.ecmra.mil/

• The Department of Defense Activity Address Code (DoDAAC) = W912JF

• The Unit Identification Code (UIC) for the requiring activity = F2HF0

OPERATIONS SECURITY

The Contractor shall identify an individual who will be responsible for Operations Security. That individual will be briefed on OPSEC Awareness and Critical Information during the first Pre-Work meeting.

Unless waived in writing by the Government OPSEC Officer, all draft deliverables under this PWS/SOW, and working papers associated with them, shall be shredded prior to recycling or disposal.

Drafts in electronic media will be deleted or erased prior to reusing the electronic medium or space on a computer hard drive or shared server space. Final versions of products under this PWS/SOW will be delivered to the Contracting Representative (COR).

Unless waved in writing by the Government OPSEC Officer, the Contractor shall apply "For Official Use Only" handling procedures (e.g., cover sheets, headers, and digital encryption) to all draft and final deliverables under this PWS that contains information included on the installation's current Critical Information List."