Attachment 2 Appendix A_Repair Storm Water Drainage.pdf

FA4819‐22‐R‐0011

21 March 2022

1 | P a g e

APPENDIX A

DESCRIPTION OF WORK

Repair (Restore) Storm Water Drainage

1200 Area

TYNDALL AFB FLORIDA

PROJECT XLWU211017

2 | P a g e

Project

The purpose of the Tyndall Air Force Base (TAFB) Project XLWU211017, is to correct Flooding and long term standing water in the Storm Sewer System for the AFNORTH Complex, by repair or replace the piping, and regrade flooding areas to improve drainage.

This project will repair, replace and/or clean silted pipes, increase pipe sizes with HDPE in sodded areas, and Class 3 Reinforced Concrete Pipe under parking lots and streets. Grading of the site shall be with the intent of proving sheet style water flow to swales. High flow swales are to have concrete trickle channels on the bottom to eliminate erosion. All disturbed areas shall have 4" of top soil and sod installed to prevent future damage. The Contractor shall be responsible to bid and build all portions of the contract, which includes providing all labor, equipment, tools, materials, and all other item’s necessary to complete the project within the allotted time frame of 180 Calendar Days, starting from notice to proceed.

SCOPE OF WORK – TWO ZONES

The project will be broken up into two Zones. Zone A begins at approximately 1300 feet northwest of the Beacon Beach and Dejarnette intersection with a 4’ trapezoidal channel, and a 2’ trickle channel, extending southeast to the Dejarnette intersection. As shown above, it is primarily northwest of the AFNORTH complex. Zone A area will also serve the area northeast along Dejarnette, northwest to Bambi Trail.

Zone B

Zone A

3 | P a g e

A. The area between Dejarnette and the parking lot is eroded and must be graded and 4” of top soil and sod installed. A trapezoidal channel from the parking lot entrance to L. K. Arnold Way pipe paralleling Dejarnette to the northwest shall have top soil, and no trickle channel.

At the junction of the Dejarnette Street and Beacon Beach, a 6 foot square reinforced concrete junction box shall be constructed to collect the water from the new 18”x24” elliptical pipe replacing the 15” parking lot pipe and the Beacon Beach swale. A 29” x 45” elliptical pipe shall extend from the reinforced concrete box, across Dejarnette with an end section on the northwest end. At the entrance to the Fire Emergency station, a 32”x 49” elliptical pipe shall be place under the drive, with end sections.

The sidewalk between building 1265, (325th Security Training building) and Beacon Beach shall have the pipe replaced with a 22” by 34” elliptical pipe with end sections, and the concrete sidewalk replaced. The surrounding area shall be graded such that the building 1265 finished floor is approximately 1’ above the surrounding drainage swale. The grade from the 6’ square junction box to North entrance to the AFNORTH complex shall be a minimum grade. The 4’ new flat bottom trapezoidal channel will have a 2’ concrete trickle channel except for the 22” x 34” pipe under the Building 1265 sidewalk

B. Zone B covers the areas around the complex, which includes cleaning the silt out of piping and structures on the Southeast side of building 1212, extending from the inlets, across the parking area, then connecting the two inlets and across Beacon Beach to the Southwest outlet, about 400 feet in the field.

The two area inlets appear to flow from Building 1212, across the parking lot, ending at two inlets in the retention pond. From there, the flow crosses Beacon Beach approximately 540 through a cleared area, which appears to have a pipe outlet. The size of the pipes are unknown, as water and silt cover the bottom portion of the structures.

The north and south entrance pipes to the AFNORTH parking lot will be removed and replaced with 22” x 34” elliptical pipes and end sections. The area between the entrance pipes shall be regraded to provide a trapezoidal channel, covered with 4” of top soil and sod. The bottom of the trapezoidal channel shall be slopped to the 2’trickle channel extending between the entrance pipes. The channel shall have 3 to 1 side slopes extending to within, 6 feet of the parking lot curbs and 8 feet from the edge of Beacon Beach pavement.

Additional lite site grading is needed around the three AFNORTH buildings as a result of past construction. The area graded will required top soil and sod. The site work around the retention ponds shall be graded to drain to Dejarnette through an existing silted trapezoidal swale. The existing channel needs to be cleared of brush and graded with a 4’ bottom. The disturbed areas shall receive 4” of top soil and sod.

4 | P a g e

The parking lot entrance driveway connecting to Dejarnette shall have the entrance pipe removed and replaced with a 15” x 21” elliptical pipe with end sections.

Attached drawings (Appendix B) show general locations of pipe, swales, structures and site work.

Description Unit

Unit Unit Qty

Zone A

Site work ‐ grading SY 375 Trapezoidal channels LF 1388 Trickle channel LF 1360 Asphalt Pavement Remove & Replace SY 120 Bedding LF 550 4" Top Soil & Sod SY 375 18"x24" RCP LF 360 22"x34" RCP LF 36 32"x49" RCP LF 110 End section 18x24 EA 3 End section 22x34 EA 2 End Section 32x49 EA 3 Clear & Grubb LF 1072 Construction Staking DAYS 6 Cleaning silt out of pipes & Structures LF 1252 Locate utilities LS 1 6" rip Rap TONS 40

Zone B

Site work ‐ grading SY 540 Trapezoidal channels LF 1540 Trickle channel LF 750 Asphalt Pavement Remove & Replace SY 40 Bedding LF 120 4" Top Soil & Sod SY 540 18"x24" RCP LF 45 22"x34" RCP LF 72 End section 18x24 EA 3

End section 22x34 EA 4

Clear & Grubb DAYS 3

Construction Staking LF 7

5 | P a g e

Cleaning silt out of pipes & Structures LF 1300 Locate utilities LS 1

General:

A. Ancillary Task: The tasks in this scope of work do not describe all the ancillary tasks required to complete the task. The contractor is required to complete all ancillary tasks to meet codes and standards that results in a complete and useable facility. Any task omissions by the contractor in their proposal will be the responsibility of the contractor.

Quantities and Measurements: Any quantities, square footage, linear footage, etc. are estimated to assist the contractor in determining the scale and scope of this project, and are not intended to be actual bid quantities. The Contractor is responsible for verifying and calculating his own quantities for his proposal and estimates, which does do not relieve the contractor from providing required quantities and cost to successfully complete project.

B. Dewater: The contractor may be required to address permitting, handling, storage, of dewatering when required. The characterization, treatment, and disposal of any potentially contaminated dewatering effluent should be considered. Prior to dewatering, consult with AFCEC/CZO and 325 CES/CEIEC. Depending on the time of year, the ground water level is known to seasonal variations in project area. The contractor is responsible for the dewatering of the excavation, and shall maintain water handling until the excavation and construction is complete.

C. All construction work that is specified under this contract shall comply with applicable federal, state, and local statutes/standards; Air Force Standards, military instructions, manuals, handbooks, regulations, guidance, and policy letters; Tyndall Air Force Base Safety, Environmental Protection Regulations and Codes; Occupational Safety and Health Administration (OSHA); Unified Facilities Criteria (UFC); Facilities Guide Specification (UFGS) Codes; American Society for Testing and Materials (ASTM); National Fire Protection Association (NFPA); National Electrical Code (NEC), International Building Code (IBC), and International Mechanical Code (IMC), Florida Department of Environmental Protection (FDEP) and Florida Administrative Code (FAC). It is the Contractor’s responsibility to identify and comply with all applicable requirements for building demolition, debris removal, and disposal. All work must comply with OSHA 29 Code of Federal Regulations (CFR) 1926; specifically, an Engineering Survey per 1926.850(a), Preparatory Operations, shall be required. It is the responsibility of the contractor to fulfill its obligation under 29 CFR 1910.120, Hazardous Waste Operations and Emergency Response, and address the health and safety of its employees associated with construction activities relative to this project.

6 | P a g e

D. Contractor shall submit all required federal, state, local, and environmental permits. A

Construction Generic Permit (CGP)/Notice of Intent (NOI) under the FDEP’s NPDES stormwater program will be required where soil disturbance exceeds 1 acre. This is separate from the Environmental Resource Permit (ERP) required under PART IV, Chapter 373, F.S., a stormwater discharge permit required under Chapter 62-25, FAC, or any local government’s stormwater discharge permit for construction activity.

Where the removal of utility lines crosses regulated surface water (open ditches/swales) a General Permit may be required under 62-330.453 of the FAC. All permit applications must be reviewed by CEIEC and signed by the 325th CES Commander prior to submittal. All costs associated with permits will be paid for by the contractor. All costs associated with any environmental sampling will be paid for by the contractor. It is the contractor’s responsibility to verify with all necessary regulatory agencies if any permits are required and/or provide written concurrence from the necessary agencies that no permits would be required prior to starting work, unless a viable regulation is noted detailing the activity would not require prior authorization and is agreed upon by the 325 CES/CEIEC.

E. Any soils brought on-site and used for backfill or grading, shall be properly tested or certified clean (with appropriate documentation) to ensure that no contaminants are being applied on-site. The source of backfill shall be natural or virgin material (other than the operation of a borrow pit facility) and shall be come from an area which has not previously been used for commercial or industrial activities. Excess excavated material meeting acceptable conditions may be disposed of on site. Soil excavated on site may be used as fill or back fill. It may not be used as topsoil.

Pipe and structure bedding shall me ¾” FDOT specifications and meet 95% std compaction.

All bedding aggregates shall be wrapped the FDOT geo-clothe to prevent aggregate migration into the adjacent sandy soil. All pipes indicated as being removed and replaced shall have headwalls, end sections, or mitered pipe ends

Contractors must be made aware of the appropriate procedures, if any contamination is encountered (i.e. suspicious odors, odd soil colors, unfamiliar liquids, buried materials, etc.) at the site. If these conditions are encountered, AFCEC/CZO and 325 CES/CEIEC must be contacted.

F. The Contractor shall be solely responsible for verification and validation of existing conditions, coordination of existing conditions in parallel with proposed requirements, above and below grade. Building debris, due to hurricane damaged, are a combination of concrete, wood, roofing material, metal, and miscellaneous building material. The As-Built drawings available for the facilities have been compiled from government archives and included as Appendix B, but all discrepancies between the drawings and actual facility are the sole responsibility of the contractor.

7 | P a g e

G. The contractor is responsible for the disposal of solid waste generated by this project and must be managed in accordance with AFI 32-7002 and the Tyndall AFB Installation Solid Waste Management Plan. Acceptable excess soil may be disposed of on the AFNORTH area site.

H. All contractors and subcontractors must submit the TAFB Forms 81, 82, and 83, along with Safety Data Sheets (SDSs) prior to bringing chemicals onto TAFB. The Contractor shall submit TAFB Form 81 (Contractor Questionnaire) and TAFB Form 82 (Chemical Inventory) and SDSs 7-10 days prior to start of work. A hazardous materials authorization letter must be issued by the 325 CES/CEIEC prior to any chemicals being used on the installation. The contractor must submit TAFB Form 83 at the completion of the project. If the project duration is longer than 30 days, the contractor must submit the TAFB Form 83 on a monthly basis until the project is complete.

I. The Contractor will confer with 325 CES Customer Service to fully complete the Base Civil Engineering Work Clearance Request (AF Form 103), and to comply with the form once it has been signed. It is the responsibility of the Contractor to route the form to each department for signature. It is the Contractor’s responsibility to have a complete approved AF Form 103 prior to beginning any construction activities including clearing, grubbing, exploratory geophysical work, etc. Contractor is responsible for coordinating utility disconnections with Base and Privatized Companies (TECO Gas, Mediacom, GCEC, etc.).

FM-103 Dig Permit has all contact information. The Dig Permit takes 7-10 days to complete and sign and may result in efforts that government entities must complete prior to demo which should be factored in to dates currently shown in Appendix C but for final approval to demo sites strict coordination must exist between contractor, 325 CONS/CES, and Dig Permit entities.

J. Measurements: The contractor is required to validate dimensions and quantities. The quantities are listed as approximations and the contractors field measurements and quaintly verification should be used for their bidding package.

K. Field Changes: The Contractor and the Government may agree to perform a no cost field change. Field changes are made when the change appears to be mutually beneficial to all parties and would not require changing the negotiated items. All field changes must be approved by the CO prior to execution. Only the CO may authorize field changes or deviations from the SOW.

L. No order, statement or direction of the Contracting Officer, an authorized representative of the Contracting Officer whether or not acting within the limits of his authority, or any other representatives of the Government, shall constitute a change order under the “Changes” clause of this contract or entitle the contractor(s) to an equitable adjustment of the price or delivery schedule, unless such a change is issued in writing and signed by the Contracting Officer.

Job Start Meeting: A job start meeting shall be accomplished with the Contractor, Contracting Officer, CE, and user upon acceptance of the 35%, 65%, or 95% construction. The meeting

8 | P a g e objective is to review project details, determine construction start date, security procedures for site, dumpster locations, and any applicable requirements during construction. The Contractor shall visit the job site to verify location, conditions, and dimensions prior to starting work.