B08_Att_2_GWMP_100__Specs.pdf

GEORGE WASHINGTION MEMORIAL

PARKWAY

MARYLAND, DISTRICT OF COLUMBIA, AND

VIRGINIA

BRIDGE PRESERVATION

PMIS 335115

PROJECT SPECIFICATIONS

100% Submittal October 2024

NATIONAL PARK SERVICE (NPS)

DENVER SERVICE CENTER (DSC)

PROJECT SPECIFICATIONS

100% Submittal October 2024

NATIONAL PARK SERVICE (NPS)

DENVER SERVICE CENTER (DSC)

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Professional Certification. I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional engineer under the laws of the State of Maryland, License No.

63933 , Expiration Date 17-Nov-2026:

Lic. No. 062680

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TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 10 00 Summary of Work 01 26 01 Contract Modification Procedures 01 27 00 Definition of Contract Line Items 01 31 00 Project Management and Coordination 01 32 16 Construction Schedule 01 32 33 Photo Documentation 01 33 23 Submittal Procedures 01 35 13.22 Archeological Protection 01 35 23 Safety Requirements 01 35 91 Historic Preservation Treatment Procedures 01 40 00 Quality Requirements 01 50 00 Temporary Facilities and Controls 01 57 19.12 Noise and Acoustics Management 01 57 23 Under-An-Acre Pollution Prevention 01 67 00 Product Requirements 01 73 40 Execution 01 74 19 Construction Waste Management and Disposal 01 77 00 Closeout Procedures

DIVISION 02 - EXISTING CONDITIONS

02 41 00 Selective Demolition

DIVISION 03 - CONCRETE

03 30 00 Concrete 03 30 10 Structural Concrete Repair 03 30 20 Concrete Accessories

DIVISION 04 - MASONRY

04 01 40 Stone Restoration

DIVISION 05 - METALS

05 12 00 Structural Steel

DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES

06 10 00 Rough Carpentry

DIVISION 09 - FINISHES

09 90 00 Painting

DIVISION 31 - EARTHWORK

31 10 00 Site Clearing 31 23 10 Excavation and Backfill 31 25 00 Erosion and Sediment Control 31 32 18 Drainage Composite 31 32 19 Geotextiles

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 01 13.65 Microsurfacing 32 12 16 Asphalt Paving 32 16 19 Exterior Improvements 32 17 23 Pavement Markings 32 92 19 Seeding

DIVISION 34 - TRANSPORTATION

34 10 00 Permanent Traffic Signage 34 20 00 Maintenance of Traffic

GWMP 335115 01 10 00 - 1

101824 SUMMARY OF WORK

NPS DSC Division 1 Specifications

GEORGE WASHINGTON MEMORIAL PARKWAY – 335115

SECTION 01 10 00 - SUMMARY OF WORK

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes the following:

1. Work Covered by Contract Documents

2. Work Phases

3. Work Under Other Contracts

4. Contractor Use of Site

5. Public Use of Site

6. Conduct of Operations

7. Work Restrictions

8. Special Construction Requirements

9. Soils Investigation Report

10. Additional Reports

1.2 WORK COVERED BY CONTRACT DOCUMENTS

A. Project Location: Maryland, District of Columbia and Virginia

B. The Work consists of:

1. The bridge preservation work includes concrete repair for spalling concrete, sealing concrete cracks, repairing existing stone masonry and repointing, bridge expansion joint work, sealing existing joints, bridge rail work, repairing drainage scuppers, installing waterproofing membrane, replacing approach guardrails, painting bearings and sole plates, resurfacing roadway approaches, pavement marking, repairing erosion, roadway traffic signage, vertical clearance signage, object markers, general site clearing, traffic management and any temporary works needed for work.

2. The pavement preservation work includes tree trimming, microsurfacing, chip seal, shoulder grading, crack sealing, partial and full depth asphalt pavement patching, pavement markings traffic management and any temporary works needed for work.

C. Project will be constructed under a single prime contract.

GWMP 335115 01 10 00 - 2

1.3 WORK PHASES

A. The work shall be coordinated with the Contracting Officer (CO). The work can be performed in phases or done concurrently for the bridge locations. Provide the CO the plan for the work with detail for what work will be completed in each phase or if concurrent the work that will be performed and what work will be completed before beginning next work element.

B. For work on the George Washington Memorial (GWMP) Parkway, work may be conducted under single lane closures as defined in Subsection 1.8 Work Restrictions, herein. Lane closures may include a length of up to two (2) miles per closure. For lane closures, the permittee is required to provide the park representative five (5) business days advance notice to allow NPS time to prepare a traffic statement or notice into the NCR Office of Communications weekly press release.

1.4 WORK UNDER OTHER CONTRACTS

a. Coincident with this contract may be other contracts within the same working vicinity.

Coordinate construction operations to minimize impacts. Coordinate with CO for other contracts information. The table below with potential projects is provided for informational purposes and may not include all projects. It is the contractor’s responsibility to coordinate work to reduce/eliminate conflicts.

POTENTIAL PROJECTS ESTIMATED CONSTRUCTION

Northern GWMP Rehab FY 25 and FY 26

Mount Vernon Trail Rehab FY 25 and FY 26

1.5 CONTRACTOR USE OF SITE

A. General: Contractor shall have limited use of site for construction operations. Limit use of premises to work within the construction limits indicated on drawings. Do not disturb portions of

Project site beyond areas in which the Work is indicated.

1. Limits: Confine construction operations to contractor laydown/staging areas on site at locations approved by the CO. Some bridge locations with specific work requiring staging notes potential staging areas in the drawings. Contractor to coordinate with CO if centralized staging is needed.

2. Limit site disturbance, including earthwork and clearing of vegetation, to the construction limits indicated in the drawings unless approved by the CO.

3. Laydown areas (temporary storage or working areas near work site used for short durations) shall be approved by CO.

4. The Contractor shall hold a meeting no less than seven days in advance of work with the

CO, in coordination with the Park, to review and confirm construction limits, equipment access, areas of ground disturbance and over all work procedures.

5. Contractor shall coordinate with CO for staging and storage area for traffic management set up including all materials and equipment for traffic management.

6. Contractor is responsible for restoring all staging and laydown area to pre-use conditions.

GWMP 335115 01 10 00 - 3

7. All emergency routes are to remain unobstructed at all times during construction.

Contractor shall pick up construction-related debris daily.

B. Storage of Materials: Confine storage of materials to contractor staging areas shown in the drawings or at a location approved by the CO.

C. Parking: Confine parking to staging area. Parking at the construction site requires CO approval.

Reduce and limit onsite parking to essential vehicles only. No less than 7 days prior to onsite work, submit an onsite parking plan with the number and type of vehicles and identify proposed laydown areas for CO approval.

D. Stockpiling: Confine stockpiling to staging area or laydown area as approved by the CO.

E. Preservation of Natural Features:

1. Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

2. Provide temporary barriers to protect existing trees and plants and root zones.

3. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with

CO and remove agreed-on roots and branches that interfere with construction.

4. Do not fasten ropes, cables, or guys to existing trees.

5. Carefully supervise excavating, grading, filling, and other construction operations near trees to prevent damage.

F. Driveways and Entrances: Keep driveways, pullouts and entrances serving premises clear and available to Government employees, and emergency vehicles at all times, unless otherwise shown as available staging area on the drawings or as approved by the CO. Do not use unauthorized areas for parking or storage of materials.

1. Schedule deliveries to minimize use of driveways and entrances.

2. Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

G. Hauling Restrictions: Comply with legal load restrictions in hauling of materials. Load restrictions on park roads are identical to state load restrictions with such additional regulations as may be imposed by the Park Superintendent. Information regarding rules and regulations for vehicular traffic on park roads may be obtained from the Office of the Park Superintendent. A special permit will not relieve Contractor of liability for damage which may result from moving of equipment.

H. Bridge Restrictions: Identify jurisdictions, load restrictions, permit requirements, time and calendar restrictions as outlined. The contractor is responsible for securing approvals for variances such as lane closures, exceeding load restrictions, and other permit required authorizations not otherwise secured by Government.

I. Lane Closures: The Contractor shall submit a lane closure plan 3 weeks in advance of planned lane closures in accordance with 01 10 00 Subsection 1.8 to the CO for approval. No lane closures will be permitted without prior approval.

GWMP 335115 01 10 00 - 4

1.6 PUBLIC USE OF SITE

A. Contractor shall conduct operations to ensure the least inconvenience to public.

1.7 CONDUCT OF OPERATIONS

A. Contractor shall conduct operations in conformance with rules and regulations promulgated by the

Secretary of the Interior for the National Park Service, and applicable park rules and regulations prescribed by Park Superintendent.

B. Work on Saturdays, Sundays, Federal holidays and at night may not be performed unless stated in the Work Restrictions below or without prior consent from the CO. Submit requests 5 business/calendar days in advance of the work to the CO for approval.

C. No signs or advertisements (except those specified herein) shall be displayed on the construction site or within the park unless approved by the CO.

1.8 WORK RESTRICTIONS

A. On-Site Work Hours: Work shall be generally performed during normal business working hours of 7:00 a.m. to 4:30 p.m, Monday through Friday, except when otherwise indicated.

1. Weekend Hours: are permitted upon request and approval by the CO.

2. Early Morning Hours: are permitted upon request and approval by the CO.

3. Hours for noisy activity: are permitted during normal business working hours, upon request and approval by the CO.

4. Federal Holiday, Special Events and First Amendment Activities: No lane closures are allowed on Federal Holidays, Special Events and First Amendment Activities, including the day before or after if noted. Contractor permittee to coordinate with George

Washington Memorial Parkway point of contact for Holidays, dates of Special Events and

First Amendment Activities, for events/holidays that require lane closures on the day before or after and for approval of lane closures. Work is permitted upon request and approval by the CO.

a. Work is not permitted on January 1st, Thanksgiving and Christmas, no exceptions.

5. No work in the event of Federal Government Closures (Weather, etc.).

6. The working hour and lane closure restrictions are as follows unless approved by CO:

a. Daytime: Monday through Friday from 9:00AM to 3:00PM, 1 lane in each direction permitted.

b. George Washington Memorial Parkway, Clara Barton Parkway and Spout Run

Parkway no work or lane closures inbound to DC from 5:30 AM to 9:30 AM and outbound from DC from 2:30 PM to 7:30 PM Monday through Friday.

c. Nighttime: Monday through Thursday from 8 PM to 5 AM is nighttime, 1 lane closed max, 1 lane in each direction permitted.

d. No work and/or lane closures are permitted between 5 AM and 9:00 AM or between

2:30 PM and 8:00 PM Monday through Thursday or from 3:00 PM Friday to 8 PM

Sunday without prior authorization by the CO.

GWMP 335115 01 10 00 - 5

Contractor shall coordinate all lane closures with the CO and Park in accordance with Section 01 31 00.

7. The contractor shall submit a phasing plan for approval by CO for each pavement preservation area. The table below lists work restrictions for each area to be incorporated into the phasing plans:

LOCATION WORK RESTRICTIONS

Great Falls – Old Dominion Dr Night work only. Monday-Thursday 8pm-6am

Required to be passible at all times for local homeowners access.

Great Falls – Visitor Center Parking 1 Night work only. Monday-Thursday 8pm-6am

Great Falls - Visitor Center Parking 3 Night work only. Monday-Thursday 8pm-6am

Clara Barton House Parking Daytime work closure permitted with 4-week notice.

North Fort Mayer Drive Single lane work day closures.

Theodore Roosevelt Island Parking Night work only. Monday-Thursday 8pm-6am

Gravelly Point Parking Phased construction to keep open half of vehi-cle parking stalls, trailer stalls, and boat ramp access.

Washington Marina Parking Area Phased construction to keep open half of parking stalls.

Belle Haven Marina Parking Phased construction to keep open half of parking stalls.

Collingwood Picnic Area Parking Daytime work closure permitted with 4-week notice.

Fort Hunt (13 Locations) Site specific phasing plan required incorporat-ing all 13 work zones. No Friday, weekend, and night work.

Mount Vernon West Parking Night work only. Monday-Thursday 8pm-6am

Mount Vernon East Parking Night work only. Monday-Thursday 8pm-6am

Contact information:

Belle Haven Marina

Owner, Tim Staples, tim@marineevolutions.com

Manager, Alex Till, manager@saildc.com

Fort Hunt US Park Police Stable

LT Timothy Wallace timothy_wallace@nps.gov

Mount Vernon Ladies Association

CEO, President, Douglas Bradburn, dbradburn@mountvernon.org

8. Wildlife - Birds:

a. The Contractor shall perform vegetation clearing, tree removals and structure repair work between November 16th and March 31st to avoid MBTA and

Threatened & Endangered Species impacts.

b. If vegetation clearing, tree removals and structure repair must be performed between April 1 and November 15th, Contractor to provide USFWS certified/approved biologist. Contractor(s) staff shall comply with the Migratory

Bird Treaty Act (MBTA) [16 USC 703]. If an active nest is encountered before or after these dates, the nest shall be left in place until the young hatch and depart.

GWMP 335115 01 10 00 - 6

Park staff must be notified and a survey by the Contractor’s biologist shall be done of the area to be impacted prior to execution; Park biologist/NR specialist will work with contractor to determine best practice on this case by case basis

(e.g., if no nests are detected, clearing/execution may proceed immediately; if nests are detected, clearing/execution may be held off for a period commensurate with nest stage (egg incubation/hatchlings/near fledging).

c. If bird nesting activity is observed within 50' of the project site, all work in the area shall stop until after the young have fledged. Work may resume once the fledglings have left the nest.

9. Wildlife - Bats:

a. All bridge work areas will need to be surveyed before any work begins (including but not limited to tree clearing and bridge repairs), regardless of seasonal restrictions. Tree and bridge surveys must be conducted following these Surveys will be conducted following the USFWS Range-Wide Indiana Bat & Northern

Long-Eared Bat Survey Guidelines: Indiana Bat and Northern Long-Eared Bat

Survey Guidelines.

b. Tree and brush pruning and removal are permitted only between November 15 and

March 31 by or under the supervision of a certified arborist. Bridge resurfacing and repair work will also primarily occur between November 15 and March 31.

c. Any work occurring outside the previously mentioned restriction requires assessment by a contractor provided USFWS certified/approved biologist for

Northern long-eared bat presence as well as migratory birds. Bridge surveys resulting in the absence of Northern long-eared bats are valid for two years. No work is permitted with positive findings without CO approval. Immediately Report positive findings to the CO.

10. Assessment of Effect: For cultural resources protection, no disturbance of historic or cultural features shall occur; no artifacts shall be collected; and if archeological or historic resources are discovered, work shall stop at the discovery site, the discovery shall be protected as required and the Cultural Resource Specialist shall be notified as soon as possible. Information and photographs regarding the location, size, and nature of the discovery should be provided, if possible.

11. Vegetation – Native Plantings:

a. Soil disturbance shall be minimized to the greatest extent possible to reduce disturbance to native plants and reduce the potential for the introduction or spread of invasive non-native plant species.

b. Disturbance to existing native vegetation shall primarily be contained in previously disturbed areas or within narrow construction limits. Whenever practicable, soils and plants affected by construction shall be salvaged for reuse in site restoration.

c. Prior to construction, the project area shall be surveyed for invasive plants. A survey report shall be issued to NPS and a treatment plan developed and accepted by NPS, followed by treatment of identified species (per plan). Infestations of invasive plants within the project area shall be treated prior, during, and/or after project implementation (depending on species - as appropriate and following all protocols, labels, etc.).

d. All disturbed ground shall be reclaimed using appropriate best management practices, which may include planting or seeding with native vegetation, or, in the

GWMP 335115 01 10 00 - 7

case of small treatment areas, allowing native vegetation to reclaim the area naturally. Project leader shall consult with the Natural Resources branch to determine the best methods for restoration.

12. Vegetation – Herbicides/Pesticides:

a. A pesticide work plan shall be submitted that will address; location, terrain, nearby waters/wetlands/intermittent streams, time of year, time of day for application, proximity to visitor use areas, number of personnel for the project, access to the work site, number of days anticipated, application techniques, and equipment to be used. Plan shall also include a safety plan that will outline the project's Personal

Protective Equipment to be used.

b. Herbicide application shall follow all federal, state, and local regulations.

13. Floodplains & Wetlands - Construction:

a. Wetlands/WOUS: Impacts to wetlands and streams are to be avoided. Incorporate

BMPs, including silt fencing and straw wattles where appropriate to limit sedimentation around wetland or stream areas.

b. Heavy equipment use in wetlands is not permitted without CO approval.

14. Work Zone and Asset Limitations: Concurrent work assets are limited to four permissible at any one time and all located within a maximum 5 mile distance zone.

B. Existing Utilities: Utility impacts are not anticipated but it is the contractor’s responsibility to verify before any excavation work.

1. Existing Utilities: Notify CO and utility companies of proposed locations and times for excavation.

2. Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs, repair utility at no additional expense to the Government.

3. If damage occurs to an unknown utility, repair utility. An equitable adjustment will be evaluated in accordance with the Changes clause of the contract.

C. Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Government or others unless permitted under the following conditions and then only after arranging to provide temporary utility services according to requirements indicated:

1. Notify CO not less than two business days in advance of proposed utility interruptions.

2. Do not proceed with utility interruptions without CO written permission.

3. Hours and length of Utility Shutdowns: Coordinate with CO if utility shutdowns are required.

D. Nonsmoking Building/Tobacco Use/Vaping: Smoking is not permitted.

1.9 SPECIAL CONSTRUCTION REQUIREMENTS

A. Project Website: A Government Furnished Construction Management Platform administered and run by the Construction Management team will be used for purposes of managing communication and documents during construction stage.

GWMP 335115 01 10 00 - 8

1. See Section 01 31 00 "Project Management and Coordination" for requirements on using

Project Website.

1.10 SOILS INVESTIGATION REPORT

A. A soils report is not available for this project.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 01 10 00

GWMP 335115 01 26 01 - 1

101824 CONTRACT MODIFICATION PROCEDURES

NPS DSC Division 1 Specifications

GEORGE WASHINGTON MEMORIAL PARKWAY – 335115

SECTION 01 26 01 – CONTRACT MODIFICATION PROCEDURES

PART 1 - GENERAL

1.1 SUMMARY

A. Section consists of administrative and procedural requirements for contract modifications.

1.2 DEFINITIONS AND ALLOWANCES

A. Home Office Overhead: Costs incurred in support of all of a contractor’s projects and not attributable to a specific job. The cost for home office overhead is only allowed as a percentage of all direct work excluding profit. The following items represent allowable home office overhead costs identified in Part 31 of the Federal Acquisition Regulation (FAR):

1. Rent

2. Utilities

3. Furnishings

4. Office equipment

5. Executive and management staff not exclusively assigned to the project

6. Support, accounting, and administrative staff

7. Preparation of cost proposals, estimating, and schedule analyses connected with

Modifications

8. Estimating and preconstruction services

9. Mortgage costs

10. Real estate and corporate taxes

11. Automobile maintenance and travel costs for home office personnel

12. Home office insurances i.e. structure, automotive, umbrella, flood, etc.

13. Depreciation of equipment and other assets

14. Home office supplies (paper, staples, etc.)

15. Legal services

16. Accounting and data processing

17. Professional fees/registration

B. General Conditions (Field Office Overhead): Management and administrative costs incurred on site for the designated project. Costs associated with preparation of modifications will not be allowed. Costs for these items are to be included only in the general conditions of the modification estimate. Only in the case of a contract time extension are additional general conditions included in modifications. The following items, if applicable, are considered allowable costs for calculating General Conditions:

1. Project Manager (PM), Assistant Project Manager

GWMP 335115 01 26 01 - 2

2. Superintendent, Assistant Superintendent

3. Quality Control, Safety Officer, Environmental Manager, etc.

4. Engineers

5. Travel, lodging, and per diem (as established by Federal Travel Regulations)

6. Scheduling

7. Field Office Trailers and associated temporary utilities

8. Field office supplies

a. Mailing and couriers

b. Reproduction costs

c. Storage

d. Phones

e. Computers

f. Copiers

9. Personal vehicles i.e. Superintendent Pickup trucks

C. General Requirements: Costs directly associated with the project and are necessary to perform the actual work of the modification. These costs shall be shown as direct costs in the estimate.

The following items, if applicable, are considered allowable costs for calculating General Requirements:

1. Hoisting

2. Material handling

3. Temporary fencing

4. Port-a-lets

5. Trash removal, dumpsters

6. Barricades

7. Small tools

8. Safety supplies

9. Scaffolding

10. Daily cleaning

11. Traffic control

12. Temporary signage

13. Temporary heating and power

D. Personnel Costs: Costs included in the modification must only be for General Conditions staff and workers actually present and working on project site. Modification costs for salaried workers are only allowed within the structure of a 40-hour week and no overtime or holiday pay will be allowed.

1. Worker Hourly Rates are costs directly associated with the individual worker and consist of the following:

a. Base Rate: The hourly rate paid directly to the worker

b. Labor Burden: Employer payments of all applicable burdens; includes insurance and taxes the business must pay on behalf of the worker to government entities and educational forums, such as:

1) Social Security

2) Medicare

3) Workers Compensation – Policy and company calculation to be made available.

GWMP 335115 01 26 01 - 3

4) Federal Unemployment Tax Act (FUTA) - Cap Rate and percentage to be proportionally allocated over one year.

5) State Unemployment Tax Act (SUTA) - Cap Rate and percentage to be proportionally allocated over one year.

6) Union agreement costs - Other costs required under an enforceable collective bargaining agreement.

c. Fringe Benefits: Various non-wage compensations provided to employees such as:

1) Health Care Insurance Premiums

2) Cell Phone

3) Clothing

4) 401K and Pensions

5) Vehicle allowances

6) Gas allowance

7) Life insurance premiums

8) Disability insurance

9) Other Fringe Benefits required under an enforceable collective bargaining agreement

E. Bonuses or Deferred Compensation: No Bonus or Deferred Compensation will be allowed within any components of pricing including Home Office Overhead, General Conditions, General Requirements, Hourly Worker Rates, or the direct costs of work.

F. General Liability Insurance: An insurance policy that protects Contractor from claims resulting from bodily injury or property damage to a third party. Include as a separate line item within all modification proposals and provide a current insurance quote upon request.

G. Performance and Payment Bonds: A performance bond is a surety bond issued by an insurance company or bank to guarantee satisfactory completion of a project. The Payment Bond guarantees the Contractor will pay the labor and material costs incurred. Banks and Insurance companies charge a premium for individual project based on a sliding scale related to the size of the project.

Include as a separate line item in modification proposals and provide current company bonding rates upon request.

H. Builder’s Risk Insurance: Covers the contractor’s loss due to fire, high winds, or other natural forces. Not reimbursed by the National Park Service (NPS) and shall not be included in modification proposals.

1.3 MODIFICATION PROPOSAL PRICING REQUIREMENTS

A. General:

1. Proposal be received in the format and within the time frame specified in the Request for Proposal (RFP) letter. Costs or delays resulting from failure of contractor to submit within the time frame specified will not be compensable.

2. Proposal shall be detailed with itemized lists of equipment, materials, labor, production rates, overhead, profit, and bond markup for each item. Labor costs must be itemized by craft and hourly rate, including Fringe Benefits and Labor Burden. If the costs of

GWMP 335115 01 26 01 - 4

Fringe Benefits and Labor Burden are not itemized, it is assumed they are included in the hourly rate shown, or contractor is not requesting reimbursement. Contractor may utilize the government provided Contractor Estimate Form, or their own form, provided that it contains the same information and level of detail as the Government’s form.

3. Requests for extensions of contract time as a result of change must be justified with a Time Impact Analysis (TIA). Refer to Section 01 32 16 "Construction Schedule", for time impact analysis requirements. TIA and associated costs shall be received with the proposal by the date shown within the Request for Proposal letter. Contractor’s failure to submit within the specified time frame will be construed as the Contractor waiving right for additional time and no time extension will be allowed.

4. All supporting documentation used to justify the proposed modification will be made available to the Contracting Officer (CO) upon request.

5. Contractor shall review and approve all subcontractor/supplier pricing in detail for proper format, scope, production rates, and pricing prior to submission to NPS. All delay costs associated with not reviewing and approving subcontractor/supplier pricing will be borne by the Contractor.

6. All pricing and production rates within the estimate must be based on fair and reasonable pricing and cannot include built-in contingency.

B. Labor:

1. Contractor shall estimate cost of labor by itemizing each craft involved, indicating worker hourly rate (base rate + labor burden + fringe benefits) for each and itemizing hours required for each craft directly engaged in modification work. Any work proposed requiring overtime work or premium pay shall be itemized separately. Rates shall be in accordance with the Davis-Bacon Act as incorporated herein. Labor Burden may include payroll taxes, Social Security, unemployment insurances, workers compensation insurance, Federal Insurance Contributions Act (FICA), FUTA, and other direct costs resulting from Federal, State or local laws.

2. Itemize labor costs for equipment operators separate from equipment costs.

3. Labor cost for foremen shall only be costs for related work required for the modification.

C. Materials:

1. Estimated cost for materials shall include quotes from multiple sources. Material prices shall include applicable fees and credits, including but not limited to, sales tax, freight and delivery charges, and tax rebates.

2. No markup shall be applied to any material provided by NPS.

D. Equipment:

1. Equipment used for the project must be appropriately sized for work being performed.

2. Do not include costs for "miscellaneous tools and equipment", in your proposal for a replacement value of $500 or less. Costs shown in excess of $500 shall be broken out separately.

3. Regardless of ownership, rates to be used in determining equipment rental costs shall be the lowest cost from one of the following sources:

a. United States (U.S.) Army Corps of Engineers, Ownership and Operating Expense Schedule (use latest edition and applicable region)

b. Construction Blue Book

GWMP 335115 01 26 01 - 5

c. Local equipment rental rates, documented by actual invoice charges, or itemized vendor quotes.

4. Estimated equipment rates shall include operating costs of all fuel, oil, lubrication, supplies, small tools, necessary attachments, ground engaging components, tires and tracks, routine repairs and maintenance (cost of major repair and overhaul is not allowed per Federal Acquisition Regulation (FAR) 31.105(d)(2)), depreciation, storage, insurance, and all incidentals. Mobilization, if applicable, may be included for equipment solely used on the modification work but must be listed separately.

5. Estimate full rate for equipment only for duration that equipment will be utilized to accomplish work of the modification.

6. Standby unit rates used in accordance with paragraph 1.3, D, 2, above. If the U.S. Army Corp of Engineers is utilized then their standby rates prevail. If Bluebook or local equipment pricing is accepted, then 1/2 of equipment costs minus any operating costs, major repair and overhaul will be accepted.

7. If equipment is in standby mode due solely to a documented NPS delay, established standby rate shall apply from the first day of the delay.

8. Equipment not used and on job site for up to five consecutive days may be classified at standby rates, provided the equipment is or has been used solely to perform work on the modification and will be necessary to complete additional modification work.

Equipment still on the jobsite but not in use after five consecutive days will not be considered in the modification pricing.

9. Requests for compensation for equipment stand by time must be justified, documented and itemized separately.

10. The estimated timeframe (daily, weekly, monthly) for use of the equipment must reflect the lowest cost to the Government.

E. Establishment and Application of Overhead and Profit Percentages:

1. Home Office Overhead and Profit (OH&P) shall be applied to direct costs only. Profit shall not be applied to overhead amounts; and overhead shall not be applied to profit.

Home office overhead shall contain only allowable, allocable, and reasonable costs per the contract documents and FAR Part 31. Profit percentages are based on risk factors found in FAR Part 31which have been applied to the specific type of work included in this project. Negotiated rates shall not exceed the following percentages for OH&P for contractor self-performed work:

Overhead………………6% Profit………………10%

2. Total aggregate limit of markup (OH&P) for Contractor and Subcontractors on modification work shall not exceed 25%. The NPS will not be responsible for allocation of percentages between contractor and subcontractors at any tier.

3. If Contractors form a partnership, partnership may only receive home office overhead and profit in same amount as an individual Contractor (refer to paragraph 1.3,E,1 above). It is the responsibility of the partners to decide on division of revenue.

4. Combined Increases and Decreases: On proposals involving both increases and decreases in the Contract Price, overhead and profit mark-ups are required on net increases and deducted on net decreases.

5. At no time can profit be calculated on Overhead or itself, it must be calculated on direct costs of work only.

GWMP 335115 01 26 01 - 6

PART 2 - PRODUCTS

PART 3 - EXECUTION

END OF SECTION 01 26 01

GWMP 335115 01 27 00 - 1

101824 DEFINITION OF CONTRACT LINE ITEMS

NPS DSC Division 1 Specifications

GEORGE WASHINGTON MEMORIAL PARKWAY – 335115

SECTION 01 27 00 – DEFINITION OF CONTRACT LINE ITEMS

PART 1 - GENERAL

1.1 SUMMARY

A. Section explains in general, what is and is not included in a contract line item, and limits or cut-off points where one item ends and another begins.

B. If no contract line item exists for a portion of work, include costs in a related item.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1 LIST OF CONTRACT LINE ITEMS (See Table 01 32 16 for CLIN list with estimated quantities)

A. Contract Line Item Number 1, Rosslyn Circle Bridge (3300-012).

1. This item consists of work pertaining to the Rosslyn Circle Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Restripe Lane Marking on Deck Surface and Clean and Seal Wearing Surface.

d. Remove Debris from Curb Lines

e. Clear Vegetation from Wingwalls

f. Clean and Paint Superstructure Steel

g. Repair Unsound Concrete on Abutments

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

B. Contract Line Item Number 2, Little River Inlet Bridge (3300-013).

1. This item consists of work pertaining to the Little River Inlet Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Repair Unsound and Delaminated Concrete on Abutment Breastwalls

d. Repair Unsound and Delaminated Concrete on Underside of Bridge Deck

e. Repair North Expansion Joint Header and Replace Expansion Joint Seal

f. Replace Asphalt at Bridge Approaches

g. Replace Center Scupper in East Bay

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h. Remove Debris From Sidewalks

i. Clear Vegetation from Wingwalls

j. Fill and Stabilize Erosion and Undermining at Sidewalk Ends

k. Remove Debris from Curb Lines

l. Replace Access Panels in Both Abutment Backwalls

m. Restripe Lane Marking on Deck Surface. Clean and Seal Wearing Surface

n. Repair South Expansion Joint Header and Replace Expansion Joint Seals

o. Repair Expansion Joint Fitting in Bridge Rail

p. Remove Debris and Vegetation from Deck Drain

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

C. Contract Line Item Number 3, Route 50 Bridge (3300-014).

1. This item consists of work pertaining to the Route 50 Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Clear Vegetation Growth from Cracks, Joints, Curb Lines and Area Around Parapets

d. Clean Expansion Joints

e. Repair Concrete Spalling. Clean and Seal Wearing Surface

f. Replace Missing Rail Segment on South Side of East Span

g. Replace Utility Access Panels on West Face of West Pier

h. Repair Access Panel on North Sidewalk Curb at East Approach

i. Repair Cracking in Deck

j. Repair Unsound and Delaminated Concrete on Underside of Bridge Deck

k. Install Waterproofing Membrane on Bridge Deck Under Grass Shoulders

l. Seal Vertical Cracks on West Face of West Pier

m. Remove Debris and Vegetation from Deck Drains. Direct Drainage Away from Piers.

n. Clean and Seal Longitudinal Joint Between Sidewalk and Parapet

o. Repair Concrete Spall on South Sidewalk Near Midspan

p. Remove Debris from Curb Lines

q. Repair Wearing Surface with a Full Depth Patch

r. Clean and Reseal Longitudinal and Transverse Asphalt Pavement Joints

s. Repair Sidewalk Concrete Curb

t. Remove Tree by Northeast Corner

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

D. Contract Line Item Number 4, Memorial Avenue Bridge (3300-015).

1. This item consists of work pertaining to the Memorial Avenue Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Replace Missing Light Standard and Secure Access Panel

d. Remove Debris from Curb Lines

e. Repost Vertical Clearance Signage

f. Remove Drift and Fallen Trees from Upstream Channel

g. Repair Unsound Concrete Throughout Structure

h. Replace Ladder and Seal Manhole Cover

i. Clear Vegetation on South Side of East Abutment

j. Replace Expansion Joint Seal

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k. Remove Debris and Vegetation from Deck Drains

l. Clean and Seal Longitudinal Joint Between Sidewalk and Railing

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

E. Contract Line Item Number 5, Washington Boulevard Bridge (3300-017).

1. This item consists of work pertaining to the Washington Boulevard Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Clear Vegetation from Structure, Trim Branches Overhanging Roadway at Southwest

Corner of Structure

d. Resurface Asphalt Pavement over Structure and Approaches

e. Repair Deterioration of Concrete Curb Supporting Masonry at Northeast, Northwest, and Southeast Corners

f. Install Type 3 Object Markers at South Approach

g. Clean and Repoint Masonry Mortar Joints

h. Seal Crack in Northeast Wingwall

i. Reset Capstones

j. Seal Joints Between Capstones

k. Replace Asphalt Approach at Each End of East Sidewalk

l. Replace East Sidewalk and Curb on Bridge

m. Repair Undermining of West Sidewalk at Approaches

n. Clean and Reseal Vertical Expansion Joints Between Breastwalls and Wingwalls

o. Repair Undermining at Base of Southeast Wingwall

p. Remove Debris from Curb Lines

q. Restripe Lane Markings on Deck Surface

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

F. Contract Line Item Number 6, Washington Boulevard - Boundary Channel Bridge (3300-018).

1. This item consists of work pertaining to the Washington Boulevard Bridge - Boundary

Channel Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Repair Deck Concrete

d. Repair Deck Joints

e. Clear Vegetation at Corners of Bridge and Midspan on West Side

f. Remove Debris from Curb Lines

g. Clean and Repoint Masonry Mortar Joints

h. Replace Damaged Masonry Stones

i. Restripe Lane Markings on Deck Surface. Clean and Seal Wearing Surface

j. Repair Railing

k. Clean and Reseal Deck Expansion Joints

l. Repost Vertical Clearance Sign

m. Install Type 3 Object Markers at Both Approaches for West Underpass Roadway

n. Epoxy-Inject Cracks in Abutment Breastwalls and Piers

o. Repair Unsound Concrete in Arch Spans Over Underpass Roadways

p. Clean and Seal Joint Between Sidewalk and Parapet

q. Seal Joints Between Capstones

r. Replace Sheared Anchor Bolts at Northwest Traffic Railing

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s. Remove Tree by Southwest Corner

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

G. Contract Line Item Number 7, New Boundary Channel Bridge (3300-019).

1. This item consists of work pertaining to the New Boundary Channel Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Repair Unsound Concrete from Abutments, Bridge Deck and Superstructure

d. Clean Bearing Seats

e. Clean Debris and Asphalt from Expansion Joints

f. Remove Debris and Vegetation from Deck Drain

g. Clear Vegetation from Wingwalls and Along Abutment Under the Structure

h. Clean and Paint Drain Extensions and Seal Around Deck Drain Openings on Deck

i. Fill and Stabilize Approach Shoulders at Ends of Sidewalks

j. Clean and Paint Railings

k. Replace Asphalt Approaches

l. Clean and Seal Wearing Surface

m. Restripe Lane Markings on Deck Surface

n. Remove Debris from Curb Lines

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

H. Contract Line Item Number 8, Humpback Bridge (3300-020).

1. This item consists of work pertaining to the Humpback Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Repair Unsound Concrete at Both Ends of West Curb

d. Clean and Reseal Joints Between Approach Parapets and Approach Pavement/Slabs

e. Remove Debris from Curb Lines

f. Repair Settlement of East Sidewalk at North Approach

g. Replace Approach Pavement

h. Re-Pour Concrete Curb and Pan Near Inlet

i. Repair Expansion Joints and Clean and Seal Wearing Surface

j. Clear Vegetation from Wingwall

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

I. Contract Line Item Number 9, Airport North Entrance Bridge (3300-021).

1. This item consists of work pertaining to the Airport North Entrance Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Reseal Vertical Joints in Parapets

d. Repair Cracks and Cracked Welds in Aluminum Railing System

e. Replace Missing Nut and Washer at 8th Post from East End of Railing for Underpass

Roadway

f. Repair Grout Pads Under Beams #16, #17, and #18 at North Abutment, and #5 and #7 at South Abutment

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g. Reset Shifted Bearing Pad Below Beams #9 and #11 at North Abutment

h. Reset Capstones and Seal Crack

i. Clear Vegetation from Wingwalls and Railings

j. Install Minimum Vertical Clearance Signs on West Side of Structure

k. Clean and Seal Longitudinal Joint Between Sidewalk and Parapet

l. Repair Unsound Concrete at Abutment

m. Remove Debris from Curb Lines

n. Reseal Expansion Joint. Clean and Seal Wearing Surface

o. Seal Joints Between Capstones

p. Replace Missing Masonry Stones on Guardwall for Underpass Roadway

q. Clean and Repoint Masonry Mortar Joints

r. Repair Broken Utility Conduit at East Side of South Abutment

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

J. Contract Line Item Number 10, Four Mile Run Bridge (3300-022).

1. This item consists of work pertaining to the Four Mile Run Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Clean and Reseal Vertical Joints in Abutment Wingwalls and Pier Walls

d. Resurface Asphalt Wearing Surface over Bridge and Approaches

e. Repair Unsound Concrete on South Abutment, South Pier, and North Pier Bearing

Seats at Top of Backwalls

f. Extend Drains to Redirect Water Away from Beams

g. Replace Drip Guard and Angles over Pedestrian Trail

h. Replace Cover Plate

i. Repair Vertical Cracks in Abutment and Piers

j. Clean and Paint Bearings

k. Clear Vegetation and Trim Trees at Northwest, Southwest, and Southeast Corners

l. Remove Debris from Curb Lines

m. Reconstruct Parapet Wall Section

n. Repair Concrete Spall at Expansion Joint

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

K. Contract Line Item Number 11, Hunting Creek Bridge (3300-023).

1. This item consists of work pertaining to the Hunting Creek Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Clean and Repoint Masonry Mortar Joints

d. Clean and Reseal Vertical Joints in Parapets, Abuts and Piers

e. Clear Vegetation from Wingwalls. Trim Trees Growing Near Wingwalls

f. Repair Unsound Concrete on Arch Undersides

g. Clean and Epoxy-Inject Cracks on Arch Undersides

h. Remove Debris from Curb Lines

i. Remove Debris and Vegetation from Deck Drain

j. Seal Joints Between Capstones

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

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L. Contract Line Item Number 12, Alexandria Avenue Overpass (3300-024).

1. This item consists of work pertaining to the Alexandria Avenue Overpass as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Reset Capstones

d. Clean and Reseal Vertical Joints in Abutments and Parapets

e. Repost Vertical Clearance Signage

f. Clear Vegetation from Wingwalls. Trim Trees Growing Near Wingwalls

g. Clean and Seal Longitudinal Joint Between Sidewalk and Parapet

h. Remove Debris from Curb Lines

i. Clean and Repoint Masonry Mortar Joints

j. Seal Cracks in Northeast and Southeast Wingwalls

k. Seal Joints Between Capstones

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

M. Contract Line Item Number 13, Fort Hunt Overpass (3300-025).

1. This item consists of work pertaining to the Fort Hunt Overpass as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Repair Unsound Concrete Pavement over Structure and Approaches, with Full Depth

Patching

d. Remove Debris from Curb Lines

e. Repost Vertical Clearance Signage

f. Clear Vegetation from Wingwalls and Spandrel Walls

g. Clean and Repoint Masonry Mortar Joints

h. Repair Unsound Concrete on Arch Underside. Clean and Epoxy-Inject Cracking on

Arch Underside

i. Clean and Reseal Vertical Joints Between Wingwalls and Spandrel Walls

j. Replace Broken and Missing Capstones. Reset Displaced Capstones

k. Clean and Joints Between Pavement Sections and Curb

l. Seal Joints Between Capstones

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

N. Contract Line Item Number 14, Little Hunting Creek Bridge (3300-026).

1. This item consists of work pertaining to the Little Hunting Creek Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Base Bid - Repair Unsound Concrete Wearing Surface and Concrete Approach

Pavement

d. Clean and Reseal Vertical Joints in Abutments and Parapets

e. Clear Vegetation from Spandrel Walls and Wingwalls. Remove Tree Growth from

Wingwall

f. Clean and Repoint Masonry Mortar Joints

g. Repair Unsound Concrete from Arch Underside, and Clean and Epoxy-Inject Cracks

h. Seal Joints Between Capstones

i. Clean and Reseal All Deck and Curb Joints

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j. Remove Tree in Vertical Joint

k. Remove Debris from Curb Lines

l. Trim Tree Overhanging Roadway

m. Install Waterproofing Membrane on Bridge Deck Under Grass Shoulders. Install

Asphalt Trail on South Side

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

O. Contract Line Item Number 15, Spout Run Parkway (WB) Bridge (3300-029).

1. This item consists of work pertaining to the Spout Run Parkway (WB) Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Remove Drift and Fallen Trees from Upstream Channel

d. Clear Vegetation from Wingwall

e. Seal Joints Between Capstones

f. Clean and Repoint Masonry Mortar Joints

g. Clean Efflorescence from Masonry at Each Corner of Structure

h. Reset Capstones

i. Remove Debris from Curb Lines

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

P. Contract Line Item Number 16, Carderock Access Bridge (3300-030).

1. This item consists of work pertaining to the Carderock Access Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Restripe Lane Markings on Deck Surface. Clean and Seal Wearing Surface

d. Replace Damaged Expansion Joint Assembly

e. Repair Unsound Concrete on Sidewalks Along Curbs

f. Clean and Reseal Granite Curb Joints

g. Repair Broken Post-to-Baseplate Weld

h. Repair Defect in Rail Post on East Railing

i. Repair Unsound Concrete on Girders and Diaphragms

j. Clean and Paint Railings

k. Clean and Reseal North Joint

l. Remove Debris from Curb Lines

m. Repair Unsound Concrete on Abutment Walls

n. Clear Vegetation from Structure. Remove Vine Growth at Southwest Corner of

Structure

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

Q. Contract Line Item Number 17, Riverside Drive Bridge (3300-031).

1. This item consists of work pertaining to the Riverside Drive Bridge as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Clear Vegetation from Wingwalls and Approach Railings

d. Remove Tree at Base of Northeast Wingwall

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e. Remove Debris Accumulation in Curb Line of Underpass Roadway Along Sidewalk at Base of North Abutment

f. Remove Debris Accumulation from Southwest Drop Inlets

g. Clean and Epoxy-Inject Cracks in Wingwalls and West Side of Slab

h. Repair Unsound Concrete from Abutment Breastwalls

i. Replace Bent Sign for Vertical Clearance

2. Measurement for payment will be lump sum.

3. Payment will be made at the contract lump sum price.

R. Contract Line Item Number 18, Cabin John Overpass (3300-032).

1. This item consists of work pertaining to the Cabin John Overpass as shown in the contract documents including but not limited to:

a. Mobilization

b. Traffic Control

c. Restripe Lane Markings on Deck Surface. Clean and Seal Wearing Surface

d.…