B09_CHOH_245002_287711_Amd_5_-_011000_SummaryOfWork_0005.pdf

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051121 SUMMARY OF WORK

CHOH 245002 & 287711

SECTION 01 11 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. Government-Furnished Materials

5. Contractor Use of Site

6. Public Use of Site

7. Occupancy Requirements for Buildings

8. Conduct of Operations

9. Work Restrictions

10. Special Construction Requirements

11. Soils Investigation Report

12. Additional Reports

1.2 WORK COVERED BY CONTRACT DOCUMENTS

A. Project Location: Chesapeake and Ohio Canal National Historical Park in Washington DC and

Montgomery County Maryland. Project is located in several areas along the towpath extending from

Lock 1 at Rock Creek in the District to Lock 5 in Maryland.

B. The Work consists of:

1. Repairs to historical canal lock masonry and stone masonry retaining walls that involves masonry repairs, takedown and rebuild, and stabilizations.

2. At Lock 1 and 2, the work consists of removing sediment in the lock, foundation repairs, grouting the canal walls, repairing deteriorated stones, and pointing. Cofferdams and pumps for control of water during construction will be needed as well as earthen ramps for access.

3. At the Level 1 and 2 Walls, which are identified as Bid Options, the work involves stabilizing areas of existing walls. At Level, permeation grouting will be used to reduce lateral earth pressure. At Level 2, the walls will be stabilized with chinking and pointing and fill replacement behind the walls with foam blocks. Cofferdams and pumps to control stormwater and ramps for access to the site are needed.

4. At Wisconsin Avenue, the work involves temporarily relocating historic fencing and posts, taking down part of stone walls displaced by vegetation, and rebuilding those walls.

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Cofferdams and pumps to control storm water in the canal are needed. The sites will be accessed from earthen ramps installed at 33rd St.

5. At Grace St., the work involves stabilizing and repairing an existing wall by removing top cap stone, drilling and installing vertical pipes and grouting, removing existing stabilizing steel in sequences to allow installation of soil nails, applying a shotcrete facing, and constructing a stone face to match the character of the original wall. The site is accessed same as Wisconsin Avenue.

6. At Potomac St, the work involves installing temporary support of excavation and taking down and rebuilding a section of stone retaining wall. The site is accessed the same as

Wisconsin Avenue.

7. At 34th St, the work involves installing temporary support of excavation, taking down and rebuilding a section of stone retaining wall that has displaced, and restoring the plantings at the top of the wall. The site is accessed the same as Wisconsin Ave.

8. At the Lock 5 site, the work involves the following:

a. Replacement of deteriorated steel bridges over the lock (Base Bid) and the inlet channel (Bid Option) that are used for both public towpath access and emergency and maintenance vehicles. The stone masonry abutments at the inlet lock will need temporary support of excavation to work on the abutments. Cofferdams and pumps will be needed to control water during construction.

b. At Lock 5, the work in the base bid involves replacing the upstream lock gate, removing contaminated sediment in the lock and installing foundation repairs. The work in the Bid Option includes performing stone repairs and repointing. The upper part of the northeast lock radius wall will be taken down and rebuilt as bar of the base bid. There is also an existing canal water lock bypass pipe that is deteriorated and will be relined in the base bid or replaced as a Bid Option.

c. At the inlet lock, the work will consist of removing trees and vegetation covering the face of the dam structure and installing rip rap on the face that is part of the base bid. There is also minor masonry work on the southwest upstream adjacent to the inlet lock gate that is part of a Bid Option. Cofferdams and pumps in the inlet channel are needed to control water.

d. At the Guard lock, the timber gate will be replaced and the walls on the downstream side will be repaired by replacing missing stones and constructing a concrete sistering wall to limit the water flow through the existing wall. There are some trees to be removed to allow access and the construction of a cofferdam with pumps is needed.

9. A testing and inspection agency shall be retained by the contractor and provide the required inspections and testing specified in the technical specifications.

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

1.3 SITE

A. General: Contractor shall have full use of the site for construction operations during the construction period. Contractor's use of the site is limited only by the Government's right to perform work or to retain other contractors on portions of Project.

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B. General: Contractor shall have limited use of site for construction operations. Limit use of premises to areas 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 constructions operations to areas with the Construction limits.

2. Not all construction related work is on NPS Property. Coordinate with property owners on non-NPS property through the NPS with the property owner.

C. Storage of Materials: Confine storage of materials to staging area shown on plans.

D. Parking: Confine parking to staging as shown in drawings.

E. Stockpiling: Confine stockpiling to staging areas.

F. Preservation of Natural Features:

1. Preservation of Natural Features:

a. Confine all operations to within the work limits of the project. Prevent damage to natural surroundings. Restore damaged areas repairing or replacing damaged trees and planted, at no additional expense to the Government.

b. Where existing branches of trees extend into the construction access route, work areas, and at other construction operations near trees and plants, identify the plants and tree branches of concern. Submit the locations and methods for pruning limbs interfering with Intended equipment access for approval to the Contracting Officer.

c. Pruning is considered to be incidental to project mobilization/demobilization costs.

d. If pruning is determined to be required, trees shall be assessed by a current

International Society of Arboriculture (ISA) certified arborist or ISA board certified master arborist to determine the most prudent work prescription. Pruning for to provide clearance shall be performed to the minimal extent necessary to facilitate the work while maintaining health and aesthetics. All work shall be performed/completed in accordance with the most current version ANSI A300

Standards (Part 1). All prescribed work must be completed under the supervision of an ISA certified arborist. Hard lines are prohibited: trees shall be pruned to have soft aesthetic lines and a natural form to the extent possible trees should be pruned with consideration for the health and aesthetics of the entire grouping, not trees in singularity. Reasonable symmetry of form and linear progression should be maintained throughout the grouping. All debris and green waste shall be removed from the park boundary.

e. The following shall be provided to the Government:

1) ISA arborist certification ID number for assessing arborist

2) ISA arborist certification ID number for arborist supervising work (prior to work execution)

3) Copy of work order/work plan for approval describing work to be executed in accordance with standardized trade verbiage (ANSI A300 and best management practices) The National Park Service (NPS) arborist will approve any reasonable work plan.

4) Certification of schedule, completion, and completion photo(s)

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

2.3. Provide temporary barriers to protect existing trees and plants and root zones where needed..

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

Contracting Officer (CO) and remove agreed-on roots and branches that interfere with construction.

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

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

G. Driveways and Entrances: Keep driveways and entrances serving premises clear and available to

Government employees, and emergency vehicles at all times. Do not use 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.

H. Construction Camp: Establishment of a camp within park will not be permitted.

I. 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.

J. Bridge Restrictions: Identify jurisdictions, load restrictions, permit requirements, time and calendar restrictions as outlined. Comply with District of Columbia and Maryland jurisdictional requirements.

Limit loads on NPS bridges at Lock 5, Inlet Lock 1, and Rock Creek Parkway according to the conditions observed at the time of construction.

1.4 CONTRACTOR REQUIREMENTS ON ADJACENT LANDOWNERS’ PROPERTIES

A. General: NPS has entered into access agreements with adjacent property owners that have temporary access areas shown on the plans. Contractor shall have limited use of the adjacent properties/non-

NPS property for construction operations in the temporary access areas, as indicated on the drawings.

Do not disturb, occupy, and/or access other portions of the adjacent landowners’ properties beyond areas indicated. Below are regulations that must be followed on the adjacent landowners’ properties:

1. Contractor shall meet with adjacent landowner, CMR, and NPS personnel prior to the commencement of work.

2. Contractor must provide Contractor Officer with 3 weeks’ notice of start of work on non-

NPS property. Government will notify adjacent property owner of commencement of work date

3. Contractor shall be available to meet with Adjacent Property owner during construction, if necessary, to discuss modifications to plans, schedule or conflicts with adjacent property owner business operations.

4. Public and emergency accesses shall not be blocked and remain accessible.

5. Outdoor seating, patios, and parking lots that are not part of the identified temporary access areas of use shall not be used to store materials, tools, supplies, or trash.

6. Maintain professional conduct and decorum while in and on adjacent landowners’ properties. Actions not permitted include but are not limited to the following:

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a. Vulgar or abusive language is not permitted.

b. Obscene gestures are not permitted.

c. Smoking is not permitted within buildings, on adjacent landowner property, nor within 30-feet of the building at any time for any reason.

d. Alcoholic beverages, weapons, smoking or illegal narcotics are not permitted on the adjacent landowners’ property at any time.

e. Playing of music that is audible is prohibited on adjacent landowners’ properties.

B. Parking Lots: No access is granted to any portion of the landowners’ parking lots outside of the temporary access area. No vehicular or pedestrian access is granted. No deliveries will be allowed on or over the parking lot. Temporary Access areas can be accessed directly from a Public Right-of-Way.

C. Trash and Debris: The Contractor shall not, nor permit any of its trade contractors to, deposit any construction debris, demolition debris, construction materials, equipment, boxes, delivery items, and port-a johns in, on, or around the Grantor Property at any time, exclusive of the Temporary Access

Areas. The Contractor is required to clear the Temporary Access Areas of trash at the end of each day.

D. Work shall occur during the District of Columbia Noise Control Act Hours and Limits. If work needs to occur outside of the Noise Control Act Hours and Limits, a special permit must be secured in advance by the Contractor.

E. Interruptions of Utility Services: Contractor shall not interrupt or turn-off the utility services of the adjacent landowners without first securing proper prior advance written permission from the

Contracting Officer. This includes all electricity, gas, water, sewer, telecommunications, telephone, cable, and Internet services in adjacent landowners’ property.

1. Submit a written request to the Contracting Officer a minimum of 14 days prior to the interruption of any utilities, along with reason and justification for the interruption.

Government will then present the request to the adjacent landowner for review and approval. Interruption of utilities will not be permitted without prior consent from the

Contracting Officer.

F. Modifications to Designated Temporary Access Areas: Submit a written request to the

Contracting Officer for modification to the Temporary Construction Access Area. Government will then present the request to the adjacent landowner for review and approval. Modifications to the Temporary Access Areas will not be permitted without prior consent from the Contracting

Officer.

G. Modifications to Design Drawings during construction: Submit a written request to the

Contracting Officer for significant modifications from the design drawings to construction..

Government will then present the request to the adjacent landowner for review and approval.

Significant Modifications from the design drawings during construction will not be permitted without prior consent from the Contracting Officer.

H. Access Agreements to non-NPS property terminate upon the earlier of i) work on adjacent owner property complete or ii) December 31st, 2025.

I. Contractor shall notify Contract Officer 1 week before any requested inspections. Government will notify adjacent property owner of inspection.

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J. Contractor and sub-contractors in addition to coverages called out in 1452.228-70 Liability

Insurance, the contractor and sub-contractors shall carry the required Federal and District of

Columbia workers compensation and list the following property owners, or management companies, as additionally insured on the required liability coverages

1. Germar Properties, LLC and Snyder Properties, LLC

2. RB Associates, Incorporated

3. George David Steinbraker Trustee

4. Georgetown 29k Acquisition LLC

K. For work on the property at 1048 Wisconsin Avenue, Germar Properties and Snyder’s Properties, LLC, The Contractor and sub-contractors shall indemnify, defend and hold Germar and Snyder

Properties and all persons claiming by, through or under Germar and Snyder Properties, respectively, harmless of and from any and all loss, cost, damage or expense (including, without limitation, reasonable attorney’s fees and the cost of enforcing this indemnity) (collectively, “Losses”) resulting from any act of negligence or willful misconduct of NPS, the General Contractor, any trade contractors, and their respective successors, assigns, servants, agents, employees, tenants and invitees (the “Indemnifying Parties” relating to (a) the exercise of any of the rights granted hereunder, or (b) the discharge, or failure to discharge, any of the obligations hereunder, but excluding, however, any Losses arising out of the negligence or willful misconduct of Germar and

Snyder Properties, or its employees, agents, or contractors. For the purposes of this Agreement, “trade contractor” shall mean all subcontractors, regardless of level, retained by the General

Contractor to conduct any work that is directly related to the Property.

L. For work on the property at 1048 Wisconsin Avenue, the following time restrictions must be adhered to unless otherwise agreed to in writing by property owner. Contractor can submit time modifications to the Contract Officer before commencement of work. Government will then present the request to the property owner for review and approval. Time restrictions changes during construction will not be permitted without prior consent from the Contracting Officer.

1. 1046 Wisconsin Work Area must be completed within 6-9 months from start of work on that work area. The Patio area must remain open for use by property owner

2. 3207 Grace Street temporary access area in parking lot. The temporary access area can only be used for 6 months total. 4 months are planned for the initial phases of that work area and 2 months to finish work at the top of the new wall.

M. Contractor shall coordinate with contractor for Georgetown 29k Acquisition LLC for the Lock 1 area. As shown on the plans a pedestrian bridge and viewing platform is planned to be constructed by Georgetown 29k Acquisition LLC. The pedestrian bridge is expected to start in 2024, but schedule will need to be confirmed by contractor.

1.5 PUBLIC USE OF SITE

A. It is permissible that various reaches of the towpath may be closed to facilitate construction. The contractor is responsible for developing a signage plan, submitting it for NPS approval, establishing detours/signage, and maintaining them.

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1.6 CONDUCT OF OPERATIONS

A. Contractor shall conduct his 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 or at night may not be performed unless stated in the

Work Restrictions below or without prior consent from the Contracting Officer. Submit requests minimum of 3 business/calendar days in advance of the work to the Contracting Officer 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 Contracting Officer.

1.7 WORK RESTRICTIONS

A. On-Site Work Hours: Work shall be generally performed during normal business working hours of

7 a.m. to 5 p.m., Monday through Friday, except when otherwise indicated.

1. Weekend Hours: 8 a.m. to 5 p.m.

B. Existing Utilities

1. Existing Utilities: Notify Contracting Officer 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 made 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 Contracting Officer not less than five business days in advance of proposed utility interruptions.

2. Do not proceed with utility interruptions without Contracting Officer’s written permission.

D. Nonsmoking Building/Tobacco Use/Vaping: Smoking is not permitted within building or within 25 feet of entrances, operable windows, or outdoor air intakes.

1.8 SPECIAL CONSTRUCTION REQUIREMENTS

A. Project Website: A project website administered by the NPS contracted Construction Management firm will be used for purposes of managing communication and documents during construction stage.

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

Project Website.

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B. Government furnished permit requirements:

1. DOEE Erosion and Sediment Control Permit

a. Permit has been obtained

b. Permit Number is s19391

2. MDE Erosion and Sediment Control Permit

a. Plans have been submitted to MDE for final approval

b. Permit Number is 22-SF-0173

3. JPA of Floodplain, Waterway, Tidal, and Non-Tidal Wetlands Permit to USACE and MDE

a. Plans have been submitted to MDE

b. Permit Number is 131516

4. 401 Water Quality Certification to DOEE

a. Plans have been submitted to DOEE

b. Permit Number is WQC-DC-2022-98

5. NWP to USACE for District Work

a. Plans have been submitted to USACE

b. Permit Number is NAB-2022-61762-M30

6. Section 106 NHPA Coordination to NCPC, OGB, CFA, and DCSHPO

7. Section 106 NHPA Coordination for Maryland Historic Trust (MHT)-SHPO

C. Contractor furnished permit requirements:

1. DCRA BCIV Permit

a. BCIV permit has been opened with DCRA to allow the Government to obtain DOEE permits for the project.

b. Permit Number is BCIV2200077

c. Contractor to coordinate with DCRA and NPS to close out the BCIV once the DDOT and DC Water permits are obtained.

2. DDOT Construction Permit

a. Contractor to obtain any permits required to obtain approval from DOTT

3. DDOT Occupancy Permit

a. Contractor to obtain permit to occupy the public space to perform this project’s scope. This will include developing all associated Traffic Control Plans.

4. Maryland Notice of Intent

a. Contractor to obtain from MDE, permitting the project’s construction

5. District Notice of Intent

a. Contractor to obtain from EPA, permitting the project’s construction

6. DCRA Sheeting and Shoring Permit

a. Contractor to obtain any sheeting and shoring as required by DCRA

7. DC Water Sheeting and Shoring Permit and Utility Adjacency Permit

a. Contractor to obtain any sheeting and shoring and utility adjacency as required by

DC Water

1.9 SOILS INVESTIGATION REPORT

A. The report C&O Canal 1046 Potomac & 3036 M st GER and GER C&O Canal 3206 Grace St

Retaining Wall Investigation and Geophysical Exploration Report Lock 1, prepared by Terracon are included with this package.

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B. In case of conflict between report and drawings or specifications, the specifications govern over the drawings, and the drawings govern over the report.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 01 11 00