A04 - SOW - 2 Apr 20.pdf

VICKSBURG NATIONAL MILITARY PARK

VICKSBURG, MISSISSIPPI

PMIS 209564

STATEMENT OF WORK:

Erosion Repair for Eight (8) Park Bridges

DATED:

April 30, 2019 Revised April 2, 2020

NATIONAL PARK SERVICE

SOUTHEAST REGION

WEST MAJOR ACQUISITION BUYING OFFICE

STATEMENT OF WORK

Contractor shall furnish all supervision, labor, equipment, fuel, transportation, materials, management and tools necessary for the routine maintenance repairs required to correct the vegetation encroachment, erosion, undermining, and broken drainage systems at Eight (8) bridges located throughout the park as noted herein and per the attached Bridge inspection reports.

Contractor shall perform all activities without causing damage to the landscape, road, or other features that could be impacted by the work. Contractor must coordinate deliveries with the COR and must advise the COR if road closure (generally one-way traffic) is required two (2) days in advance. If road closures can’t be accommodated, then the contractor shall use flagmen to control the flow of traffic traveling through the park and work area.

After assessing current conditions at each bridge site, the contractor shall submit, using form CM-16, a brief summary to the NPS of the proposed treatment recommendations, at each site, based on the Bridge inspection reports’ recommendations and visual observations. Typical treatments required for all bridges if not identified in the report:

• Remove vegetation from bridge structures (piers, walls, railings) creating a three (3) feet buffer to aid with visual inspections and maintenance.

o Jackson Road Bridges – cut vines at base of piers and remove vines from base of piers to a distance of 7’ above ground.

o Remove Vines from deck structures in the same manner.

• Repair Erosion with new soil material, grout injection, erosion matting, sod, etc.

• Repair or replace damaged drainage systems as noted in the inspection reports and noted herein.

• Repair riprap and ensure tight sealed joints for gutters/riprap abutting the bridge walls.

• Clean debris/downed trees as noted in the bridge inspection report and noted herein.

• No new impervious surface shall be created unless defined as a recommendation in the bridge inspection reports.

Each bridge inspection report (c. 2014) contains an excerpt, from the full report, focusing only on issues pertaining to the erosion control measures needed to protect the bridge and road infrastructure. Each report contains info about the bridge, yellow highlighted text in the Field Inspection Report sections for targeted work activity, and photos related to the work to be addressed via this project.

The Contractor shall field verify the extent of work required as conditions may have changed.

SITE ASSESSMENT:

It is strongly encouraged that the contractor visits each bridge site with the accompanying bridge inspection report to gauge the limitations, costs and activities required. Note: Vegetation encroachment may render some conditions inaccessible. Also, a preventative maintenance contract is underway, and some areas may have been addressed.

1. Memorial Arch Bridge (5600-001) bridge #1 - repair erosion at both abutments, and along northeast wingwall.

• Remove debris near bridge. Inspect and repair erosion near other drains and abutments.

• Install cemented riprap from road to new work to channel water.

2. Jackson Road Bridge (East) (5600-003) bridge #3 - repair erosion near south pier under span #2 and undermining along concrete slope protection at north pier. Remove vegetation growth from structure.

At base and piers cut material at grade and pull vegetation off for a distance up to 7 feet. Remove vegetation from railing, and bottom of deck.

3. Thayer's Approach Bridge (5600-004) bridge #4 – repair erosion and extend cemented riprap embankment upward to both abutments to protect channel banks and fix undermining at abutment corners. Repair undermining of grouted riprap at end of northeast wingwall.

4. Mint Spring Bayou Bridge (5600-007) bridge #7 - conditions at this bridge changed significantly - Repair Erosion and undermining along southwest wingwall and concrete apron. Install gabion baskets at least two tier tall to establish a minimum of 4 feet wide surface of topsoil/grass vegetation from concrete gutter on southeast side of bridge. New erosion has occurred here on the southwestern end of the bridge leaving only about sixteen (16”) inches of soil at the edge of the concrete gutter.

• Install gabion baskets (at minimum of two tier high/stack) with rocks at southwest end of Mint Spring Bayou Bridge on Connecting Ave to establish a minimum of four (4) feet of land next to the concrete curb. On top of proposed gabion wall, Install rolled erosion control products (RECP), type 3.B and add 3 to 5” of topsoil then sod. Similar system installed on Union Ave.

recently.

o Follow gabion basket manufacture installation procedures for connecting and securing the baskets. Use form CM-16 to submit this literature prior to beginning work.

5. Jackson Rd Bridge (West) (5600-008) bridge #8 - remove vegetation and repair undermining and settling of concrete drainage ditch near southeast wingwall. Regrade slope and provide erosion control on slopes along abutments and wingwalls as necessary.

6. Hovey's Approach Bridge #1 (5600-011) bridge #11 - repair erosion and concrete gutter/ditch along southeast wingwall. Repair undermining of concrete slab at end of pipes from northwest inlet. Repair erosion hole at west end of south curb.

• Install grate over newly installed drain pipe.

• Remove cemented riprap and repair erosion at base of bridge with new riprap (cemented or not cemented).

7. Hovey's Approach Bridge #2 (5600-012) bridge #12 - remove downed trees and debris from downstream channel. Repair erosion at southeast wingwall and at southwest corner of bridge.

8. Hovey's Approach Bridge #3 (5600-013) bridge #13 - repair erosion holes at northwest wingwall and at south end of west railing.

GENERAL GUIDELINE:

The contractor shall employ erosion and sediment controls which is meant to prevent erosion and control sediment. Apply measures throughout the life of the project to control erosion and to minimize the sedimentation of rivers, streams, and impoundments such as lakes, reservoirs, bays, and coastal waters. Refer to the Standard Specification for Construction of Roads and Bridges on Federal Highway Projects, FP-14.

• No construction access will be permitted through a wetland or waterway.

• Do not allow construction vehicles to track sediment outside the project limits.

• Do not modify the type, size, or location of any control or practice without prior approval from the Contracting Officer (CO).

MATERIAL:

Contractor shall verify and provide all materials for a finished product.

Include the following:

Although not directly mentioned in quote the compacted soil needs protection by either Sod, grass seeds, and/or straw. Failure to ensure new work is stable and protected would result in subsequent call-back to correct the issue(s).

Herbicides:

Contractor SHALL NOT utilize any herbicides on this project.

GOVERNMENT FURNISHED:

The NPS will not furnish any items, tools, or materials for this contract.

A gate access code may be issued depending on duration of project.

EQUIPMENT LIST:

Contractor shall submit a list of equipment (motorized) that will be used on the job site using form CM- 16 for submission. If any item requires fueling the Contractor must use Department of Transportation (DOT) approved gas cans (metal) to transport fuel in/out of the park.

WARRANTY:

The Contractor shall warranty all work and material for a period of one (1) year from the date of acceptance which shall occur during the final inspection or after all deficiencies noted in the final inspection have been corrected.

SAFETY:

Safety requirements and requested information approval must be met prior to a NTP being issued to the contractor. Use the CM-16 form for all submissions.

1. Provide a safe and healthful workplace for all contractor’s employees, NPS staff, and visitors while on NPS site.

2. Provide a level of public safety commensurate with exposure at NPS worksite.

3. Comply in rectifying all unsafe or unhealthful conditions called to his attention by the contracting officer, contracting officer representative (COR), safety officer, or deputy facility Manager.

4. Allow for informal and formal, announced and unannounced safety inspections by the COR and the appropriate safety officer at the worksite.

5. Submit an acceptable documented project specific safety plan (SSP) prior to a notice to proceed (NTP). Include a cool down period of 15 minutes after shutting off equipment before refueling. Use CM-16 for submittal.

6. Designated in writing a company safety officer/coordinator that will be on site for the duration of the projects with the responsibility and authority for ensuring safe work practices are being carried out per the approved SSP. Use CM-16 for submittal.

7. Provide and maintain a fully charged 5lb or 10lb Class ABC fire extinguisher to be mounted and visible at the jobsite or within work truck kept at the site. Mount extinguisher to freestanding stand where required posters are to be mounted. Use CM-16 for submittal for stand.

8. Provide first aid procedures and mount a first aid kit or provide certificate of workers to remain on the jobsite. Use CM-16 for submittal.

9. Follow EM-385-1-1 site/project specific safety guidance directive - available online or from authored agency (USACE).

10. Conduct weekly site-specific safety training to employees. Submit safety training sign-in sheets to the COR each week – include topic with site attendees printed name and signature on the sign-in sheet.

SUBMITTALS:

Form CM-16 will be provided to the contractor, available in PDF and Excel, which shall be used for the submission of each item requested herein. Yellow highlighted text throughout this document is an indication of items to submit. Items can be submitted individually or inclusion of multiple items. DO NOT LIST any item on the form not accompanied by the supporting documentation. Begin the form numeration with 001, 002, and so forth. If any listed item must be resubmitted the contractor shall add the alphanumeric character to the form as such – 001a, 001b until all items on the form have been accepted or approved.

PLACE OF PERFORMANCE:

The project site is located throughout the Vicksburg National Military Park at each bridge location:

3201 Clay Street Vicksburg, Mississippi, 39183

Permitted Work Hours: Monday through Saturday, 7:00am – 3:30pm Permitted Access: Call the COR or designee to schedule access to these facilities

PROJECT PERSONNEL:

Contracting Officer:

Laurie Sherrod NPS, Interior Region 2, South Atlantic Gulf

WEST MABO

Telephone: (404) 938-0178 Email: Laurie_Sherrod@nps.gov

Project Inspector (COR):

Ellis Jones, Laborer Supervisor Vicksburg National Military Park 3201 Clay Street Vicksburg, Mississippi, 39183 Telephone: (601) 831-1874 Email: ellis_jones@nps.gov

Operations Facility Manager (Designee):

Garry Lee, Facility Manager Vicksburg National Military Park 3201 Clay Street Vicksburg, Mississippi, 39183 Telephone: (601) 831-1874 Email: garry_lee@nps.gov