PWS_Meridian_Hill_Park_Draft_1.docx

PERFORMANCE WORK STATEMENT (PWS)

Meridian Hill Park – Landscape Preservation and Maintenance Rock Creek Park, Washington, DC National Park Service (NPS) “Draft”

PERFORMANCE WORK STATEMENT

This Section C describes the requirements for preservation sensitive landscape maintenance, stabilization, and rehabilitation services at Meridian Hill Park, Rock Creek Park, Washington, DC. The Contractor shall furnish all labor, materials, equipment, supervision, and incidentals necessary to perform the work described herein in accordance with the contract documents.

C.1 GENERAL REQUIREMENTS

The Contractor shall perform all work in compliance with the Secretary of the Interior’s Standards for the Treatment of Historic Properties, National Park Service (NPS) policies, applicable federal and District of Columbia laws, and all contract specifications and drawings. Work shall be performed under a single prime contract and coordinated to allow continued public use of the park.

C.2 SCOPE OF WORK (CLINBASED REQUIREMENTS)

The work shall be performed in accordance with the Contract Line Item Numbers (CLINs) identified below. Each CLIN defines the minimum required performance outcomes. Means and methods shall be at the Contractor’s discretion, subject to compliance with the contract documents.

C.2.1 CLIN 0001 – Site SetUp and Tree Protection The Contractor shall mobilize to the site and provide temporary facilities, staging areas, construction fencing, barricades, signage, erosion and sediment controls, and tree and vegetation protection. Tree protection shall include fencing at critical root zones and protection of historic hardscapes and features.

C.2.2 CLIN 0002 – Site Landscape Cleaning The Contractor shall remove accumulated leaves, organic debris, trash, and refuse throughout the park. Seasonal pruning of shrubs and trees shall be performed. Weeds and unintended vegetation shall be removed from planting beds and hardscape surfaces.

C.2.3 CLIN 0003 – Historic Concrete Cleaning The Contractor shall clean historic exposed aggregate concrete features using low pressure, nondestructive methods. Cleaning shall preserve historic materials, texture, and patina. Excluded features shall not be disturbed.

C.2.4 CLIN 0004 – Storm Drainage Cleaning and Documentation The Contractor shall clean existing storm drainage structures without excavation or alteration and shall document existing conditions and functionality.

C.2.5 CLIN 0005 – Site Landscape Planting Improvements The Contractor shall remove failed plant material, perform soil decompaction and amendments, install new trees, shrubs, and groundcover, and provide staking, mulching, and a one year establishment period.

C.2.6 CLIN 0006 – Turf Restoration and Maintenance The Contractor shall remove failed turf, perform soil preparation, install sod or hydroseeded turf as specified, and maintain turf during the establishment period.

C.2.7 CLIN 0007 – Site Landscape Feature Finish Restoration The Contractor shall prepare and repaint historic metal features, including fencing, stanchion systems, light poles, and trash receptacles using preservation grade methods.

C.2.8 CLIN 0008 – Site Electrical Utilities The Contractor shall perform in-kind maintenance of existing lighting fixtures and associated electrical components, including lamp replacement and minor repairs.

C.2.9 CLIN 0009 – Hornbeam Training at Pleaching Frame The Contractor shall perform selective pruning and training of hornbeam trees under the supervision of a qualified arborist.

C.2.10 CLIN 0010 – Existing Tree Pruning The Contractor shall prune existing trees for health, safety, and clearance, remove volunteer vegetation, and grind stumps as specified.

C.2.11 CLIN 0011 – Soil Decompaction and Radial Trenching The Contractor shall perform air spading, soil decompaction, and radial trenching at designated oak trees to improve root zones.

C.2.12 CLIN 0012 – Historic Bench Restoration The Contractor shall fabricate and replace missing or damaged bench slats to match existing historic profiles and perform light surface sanding.

C.2.13 CLIN 0013 – Reset Post and Chain Fencing The Contractor shall reset leaning stanchion fencing elements to plumb condition while preserving historic materials.

C.2.14 CLIN 0014 – Other Site Construction The Contractor shall perform additional authorized site work not otherwise specified, as directed by the Contracting Officer.

C.2.15 CLIN 0015 (Option) – Interpretive Panel Replacement The Contractor shall fabricate and replace damaged or missing interpretive panels in-kind, reusing existing frames and hardware.

C.2.16 CLIN 0016 (Option) – Graffiti Removal The Contractor shall remove graffiti from historic concrete surfaces using approved nondestructive methods.

C.3 DELIVERABLES

The Contractor shall submit schedules, plans, reports, photographic documentation, and closeout materials as required by the contract documents.

C.4 PLACE OF PERFORMANCE

Meridian Hill Park, Rock Creek Park, Washington, DC.

C.5 PERIOD OF PERFORMANCE

The period of performance shall be established at contract award and includes a one-year landscape establishment period.

C.6 DRAWING DRIVEN CONSTRAINTS, LIMITS OF WORK, AND FIELD VERIFICATION

C.6.1 Drawing Notes Govern The Contractor shall perform Work in accordance with the contract drawings and specifications. Where drawings include general notes, sheet notes, phasing notes, access restrictions, or “reference only” notes, the Contractor shall comply with those requirements as binding contract constraints.

C.6.2 Storm Drainage – Reference Only / Cleaning & Documentation Only Storm drainage plans are provided for reference only and shall not be interpreted as authorizing construction, modification, repair, or replacement.

The Contract authorizes cleaning, inspection, and documentation only of storm drainage structures. The following are expressly prohibited unless separately authorized by the Contracting Officer (CO) in writing:

• Excavation

• Pipe repairs

• Pipe lining

• Hardscape disturbance All deficiencies identified during storm drainage cleaning and inspection shall be documented only. No corrective work is authorized under this Contract.

Reflecting pool, cascade, and all other fountains and water features are not included in storm drain cleaning. However, sidewalk drains and hardscape drainage structures adjacent to the cascade fountain and other water features are included.

C.6.3 Field Verification and Unknown Conditions The Contractor shall verify all existing conditions in the field prior to commencing Work. Discrepancies between drawings and field conditions shall be reported immediately to the CO/COR.

Where material or condition is unknown, the Contractor shall assume the most fragile condition and shall use nondestructive methods to avoid damage.

C.6.4 Protection of Historic Materials and Site Features The Contractor shall protect all existing and historic materials. The Contractor is responsible for damage caused by inappropriate methods.

C.6.5 Sediment and Discharge Restrictions No discharge of sediment or contaminated water is permitted.

C.6.6 Utility Notification / OneCall Requirements The Contractor shall comply with D.C. law and utility notification requirements prior to any excavation, including contacting the OneCall Center/Miss Utility a minimum of three (3) working days prior to start of construction unless otherwise noted.

C.6.7 Interpretive Panels – Cleaning Included in Base Work Cleaning and graffiti removal at all interpretive panels is included in base work.

C.6.8 Parking, Staging, and Site Use Limitations The Contractor shall comply with access, parking, staging, and laydown restrictions as shown on contract drawings and as specified in Division 01.

Remote parking is required at Meridian Hill Park. Worker vehicles are not authorized to park within Meridian Hill Park boundaries. The Contractor is responsible for any required District of Columbia permitting related to remote parking.

Laydown areas are not permitted within critical root zones of any trees or on sidewalks, plazas, or other concrete masonry surfaces.

C.6.9 Work Hours Work on Saturdays, Sundays, Federal holidays, or at night shall not be performed without prior written consent from the CO. Requests shall be submitted a minimum of three (3) business days in advance.

C.6.10 Erosion Control / Under One Acre Pollution Prevention The Contractor shall implement and maintain erosion and sediment controls throughout construction in accordance with the approved Under an acre Pollution Prevention Plan (UPPP). Clearing, grubbing, or earthwork shall not begin until erosion controls are implemented.

Weekly inspections shall be conducted jointly by the Contractor and CO, documented, and retained onsite. Plan revisions shall be implemented within seven (7) calendar days of identification of deficiencies.

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