23R1308_Amd0003-Specs.pdf

FY20 MILCON Project P-459B WON 1661460 MCB Camp Blaz Parking US NAVSUPPACT, MCB, Guam

PART 3 - CHAPTER 1 - Page 4

Amendment No. 0003

1.0 PROJECT DESCRIPTION

This project is to design and construct a concrete or asphalt concrete (AC) paved parking lot to meet the Basic Facility Requirements (BFR) for P-459 Bachelor Enlisted Quarter (BEQ) “H”. See Attachment A for the Marine Corps Base (MCB) Camp Blaz Parking Plan.

The BFR is the total paved area (GSY) which must not be exceeded. Total number of parking stalls shall be at least 235 minimum and a maximum of 290, with Contractor maximizing the number of stalls to the extent practicable.

Project will provide a minimum number accessible stalls and provide ABA accessible walkways to facilities and offsite roadways. Number of accessible stalls will be determined at each site, depending on the number of stalls provided for that area.

Site preparation will include site grading and earthwork. Supporting site features will include curb ramps and signage.

Paving and site improvements include new driveways, landscaping, and other amenities.

Repair existing curbs, sidewalks, and pavement if disturbed during construction. Storm water improvements will include storm water collection systems and water quality treatment devices.

Electrical utilities include electrical distribution systems, electrical transformers, and site lighting. Lighting will be provided in the parking lots and along walkway routes.

Relocation of light poles should only be conducted as needed.

Existing underground utilities, fire hydrants, and manhole structures should be maintained if possible; relocation should only be conducted as needed.

Suitable design principles shall be included in the design and construction of this project in accordance with Part 3 (Chapter 3) of this RFP. Low Impact Development (LID) must be included in the design and construction of this project as appropriate.

Anti-Terrorism/Force Protection (AT/FP) requirements will not apply to this project.

Environmental mitigation may include natural and cultural resource mitigation.

Facilities shall be designed to meet or exceed the useful service life specified in DoD Unified Facility Criteria. Facilities shall incorporate features that provide the lowest practical life cycle cost solutions satisfying the facility requirements with the goal of maximizing energy efficiency.

PART 3 - CHAPTER 6 / ESR G10 - Page 27

6.0 ENGINEERING SYSTEMS REQUIREMENTS

G10 SITE PREPARATION

SYSTEM DESCRIPTION

The site preparation activities consist of site clearing, demolition, removal, earthwork, and disposal of materials to ready the site for other work associated with the project.

GENERAL SYSTEM REQUIREMENTS

In accordance with project waste management objectives, on-site reuse and recycling of project green wastes will be maximized. The contractor shall provide and follow all Coconut Rhinoceros Beetle (CRB) and Little Fire Ant Management Procedures included in Part 6 of the RFP.

Develop the project site and perform off-site work necessary to meet the requirements of the project, antiterrorism criteria, local codes, reference standards, technical specifications and performance criteria.

Design drawings by other projects of the site and adjacent areas are being provided in lieu of a topographic survey. Perform a topographic survey in accordance with FC 1-300-09N, Navy and Marine Corps Design Procedures. Include the topographic survey in all design submittals. The design drawings by others have been provided to show the location of existing and proposed facilities, areas, of new work required by this RFP and the character of the site. Prior to starting work, physically verify the location of all existing utilities and obtain all additional survey data required to provide a quality final design including conducting as-built research and field inspections. The existence, size, and location of the utilities are not guaranteed by the surveys provided. Verify the location of all utilities prior to construction. Electronic files of the design drawings may be provided only after award of the Contract.

Unless otherwise noted, provide new facilities at the locations indicated on the drawings in Part 6.

Minimize the impact of construction activity on operations and neighboring facilities.

Identify and obtain permits to comply with federal, Guam, and local regulatory requirements associated with the work. Submit a complete Permits Record of Decision (PROD) form with the first design submittal package. Determine correct permit fees and pay said fees.

Forward copies of permits, permit applications, and the completed PROD form to the Government's Civil Reviewer and Environmental Reviewer. Perform work in accordance with the obtained permits.

Jurisdictional tidal and non-tidal wetlands have been identified on the project site.

Coordinate and obtain the Contracting Officer's approval for proposed haul route(s), work site access point(s), employee parking location(s) and material laydown and storage area(s).

Refer to Site Analysis and Building Requirements Sections for additional site preparation

PART 3 - CHAPTER 6 / ESR G10 - Page 28 functional program information.

GOVERNMENT PROVIDED GEOTECHNICAL INFORMATION

See Paragraph A10 GENERAL in Section A10, Foundations.

G1010 SITE CLEARING

Install erosion and sediment control devices prior to beginning clearing or grubbing operations.

If approved by the Government clearing and grubbing may be allowed to accommodate construction equipment within the designated construction laydown area.

G101001 CLEARING

Comply with all applicable Federal, Guam and local mandated cultural resource mitigation agreements, which includes but not limited to, standard operating procedures (SOP) and discovery procedures with appropriate Government notifications when any archaeological, architectural or cultural objects are discovered. All cultural resources encountered during site preparation activities shall be managed including, but not limited to, archaeological monitoring and data recovery, in accordance with all appropriate U.S. DoD and Guam agencies requirements. Refer to Part 6 Attachment B of the RFP.

Comply with the latest Explosives Safety Submission and latest Department of Defense Explosives Safety Board (DDESB) approval letter for Munition and Explosives of Concern (MEC) requirements during any drilling, sampling and/or testing on the project site.

Additional MEC clearance that may be required (e.g., deep footings, foundations) to be included in project contingency and the Contractor shall coordinate and report to the Contracting Officer for MEC Clearance and MEC Quality Assurance for NAVFACMAR. See Part 6 Attachment B of the RFP.

The Contractor shall provide and follow all Coconut Rhinoceros Beetle (CRB) and Little Fire Ant (LFA) Management Procedures in Part 6 of the RFP, in addition to other invasive management procedures required under Part 2 of the RFP through implementation of a Hazard Analysis and Critical Control Point (HACCP) Plan, as approved by the Government.

Preserve and protect trees, shrubs and vegetation not directly impacted by the construction in accordance with Part 2, Specification Section 01 57 19, Temporary Environmental Controls, and PTS Section G205005, Paragraph 1.1, Existing Plant Material to Remain or be Transplanted.

The project site does not have saleable timber.

Burning will not be permitted.

G101002 TREE REMOVAL

Not used.

PART 3 - CHAPTER 6 / ESR G10 - Page 29

G101003 STUMP REMOVAL

Not used.

G101004 GRUBBING

Grub all areas as required for project construction. Strip and stockpile existing topsoil wherever possible where soil is viable for planting beds and turf areas. Limit the height of the stockpile to preserve micro-organisms. Remove remaining grubbed materials from the project site and dispose of it off station at a permitted facility. Hauling material out of the Cantonment shall be coordinated and approved by MCBCB EV and GEPA.

G101005 SELECTIVE THINNING

Not used.

G101006 DEBRIS DISPOSAL

All waste materials shall become the property of the Contractor unless directed otherwise by the Contracting Officer, and shall be transported, disposed of and recycled in accordance with the Contractor’s approved Environmental Management Plan and Waste Management Plan. Hauling material out of the Cantonment shall be coordinated and approved by MCBCB EV and GEPA.

Contractor shall provide means and methods for reusing material on-site in the Contractor's approved Waste Management Plan.

G1020 SITE DEMOLITION & RELOCATIONS

Potential items to be reused or relocated include but are not limited to: fire hydrants, water meters, hand holes, light poles, drainage structures, utility lines, bollards, trees, planting, fencing, and road signage. The quantity and type of items to be reused or relocated will be dependent on the Contractor’s design.

G102001 BUILDING MASS DEMOLITION

Not used.

G102002 ABOVEGROUND SITE DEMOLITION

Preserve all aboveground site elements constructed or proposed by other projects that are not designated for demolition, such as: sidewalks, utility system components, asphalt concrete pavement, concrete curb and gutters, concrete headers, pavement markings, and light poles.

G102002 1.1 ABOVEGROUND STORAGE TANKS

Above ground storage tanks not anticipated.

PART 3 - CHAPTER 6 / ESR G10 - Page 30

G102003 UNDERGROUND SITE DEMOLITION

Preserve all underground site elements constructed or proposed by other projects that are not designated for demolition, such as: water, sewer, storm drain, electrical, and communications.

G102003 1.1 UNDERGROUND STORAGE TANKS

Not used.

G102004 BUILDING RELOCATION

Not used.

G102005 UTILITY RELOCATION

Items by others to be relocated may include, but are not limited to the following: fire hydrants, water meters, water lines, sewer cleanouts, sewer lines, drainage structures, drain lines, street lights, electrical manholes, electrical switchgears, sectionalizing terminal cabinets, associated enclosures, telecommunications maintenance holes, and telecommunications handholes.

G102006 FENCING RELOCATION

Not used.

G102007 SITE CLEANUP

Waste materials will become the property of the Contractor; transport, dispose of or recycle waste materials in accordance with Part 2 Section 01 57 19, Temporary Environmental Controls.

Remove waste materials from the project site daily or as need to prevent the following:

vector attraction, fire, health and/or safety hazards and spillage. Do not allow accumulations inside or outside building(s) or on pavements.

Clean up the project site prior to turning over to the Government for use.

G102007 1.1 SPILLS

In the event of a spill or release of hazardous substances, pollutant, contaminant or oil, notify the Contracting Officer immediately. Take containment/control actions immediately to minimize the effect of any spill or leak. Perform clean up in accordance with Part 2, Section 01 57 19, Temporary Environmental Controls. Clean up shall be performed at the Contractor’s expense in accordance with Federal, Guam, Local and Installation requirements.

G102090 OTHER SITE DEMOLITION & RELOCATIONS

PART 3 - CHAPTER 6 / ESR G10 - Page 31

Not used.

G1030 SITE EARTHWORK

G103001 GRADING

The project area is located in FEMA Flood Zone X, which includes areas determined to be outside the 0.2 percent annual chance floodplain. Finish grading shall provide positive drainage away from new structures and appurtenances and those constructed or proposed by others. Direct storm water runoff so as not to create ponding or flooding around the new facilities and on or around adjacent facilities, parking lots, and streets. Grading shall be in accordance with UFC 1-200-01 General Building Requirements, UFC 3-201-01 Civil Engineering, and IBC Chapter 18.

G103002 COMMON EXCAVATION

Perform excavation as required for construction in accordance with the Contractor’s Professional Geotechnical Engineer’s recommendations.

All unsuitable material and surplus material must be hauled off-site and off station and disposed at a permitted facility. Hauling surplus material out of the Cantonment shall be coordinated and approved by MCBCB EV and GEPA.

G103003 ROCK EXCAVATION

Blasting will not be permitted.

G103004 FILL & BORROW

Fill material must be imported and must meet project specifications. Provide borrow and select fill from off-base sources that meet the requirements provided in the Contractor’s Geotechnical Report and this RFP. Any fill and borrow material brought onto the Government property must be clean and must not contain any MEC and environmental contaminants, such as residual pesticides, metals, petroleum, etc., above environmental action level for unrestricted use.

Excavated material shall be used if the Contractor’s geotechnical investigation and quality control material testing determines the material to be suitable for fill, the material meets the specification requirements, and meets the requirements of this RFP.

G103004 1.1 REQUIREMENTS FOR OFF SITE SOIL

For each borrow site, provide borrow site testing for hazardous materials characteristics from a composite sample of material, collected in accordance with standard soil sampling techniques. Do not bring material onsite until tests results have been received and approved by the Contracting Officer.

G103005 COMPACTION

PART 3 - CHAPTER 6 / ESR G10 - Page 32

Provide compaction in accordance with the recommendations of the Contractor’s Professional Geotechnical Engineer, UFC 3-260-02, and UFGS Section 31 23 00.00 20, Excavation and Fill.

G103006 SOIL STABILIZATION

The following methods of soil stabilization will not be allowed: lime, cement, lime slurry, and asphalt.

Provide soil stabilization in accordance with the Contractor’s Professional Geotechnical Engineer’s recommendations. Install in accordance with manufacturer’s written instructions.

G103007 SLOPE STABILIZATION

Provide slope stabilization through appropriate grading and site design to provide a slope that does not exceed the maximum slope per Contractor’s Geotechnical Report and in accordance with UFC 3.220-01, Geotechnical Engineering. Install in accordance with the manufacturer’s written instructions. The following techniques for slope stabilization will not be allowed: concrete. Provide calculations substantiating the provided slope and associated structures are stable.

G103008 SOIL TREATMENT

G103009 SHORING

Provide sheeting, shoring, bracing, cribbing, and underpinning in accordance with the Contractor’s Professional Geotechnical Engineer’s recommendations.

Provide protection of existing buildings and structures to remain.

G103010 TEMPORARY DEWATERING

If dewatering is to be performed, provide a temporary dewatering system that ensures adverse total and differential ground movements and settlements do not occur in surrounding buildings, structures, utilities, pavements, slabs-on-grade, other improvements to remain and in the new improvements. Trenches and/or sumps to remove surface storm runoff water from excavations and embankment subgrades may be required. Dewatering shall be in accordance with the recommendations of the Contractor’s Geotechnical Report and Part 4 Section G103010.

Construction dewatering into the sewer collection system is prohibited.

G103011 TEMPORARY EROSION & SEDIMENT CONTROL

Obtain Erosion and Sediment Control permit required for the proposed work from the Guam Environmental Protection Agency (GEPA). Submit permit application to the Contracting Officer for approval prior to submitting to the GEPA.

PART 3 - CHAPTER 6 / ESR G10 - Page 33

Provide temporary erosion and sediment controls for the project. Maintain temporary erosion control measures for the duration of the work in the area.

All erosion and sediment control measure shall be installed and maintained in accordance with the Contractor’s approved Storm Water Pollution Prevention Plan (SWPPP).

Disturbed areas shall be stabilized using temporary erosion sediment control measures, seeding and/or mulch application. Mulch application thickness shall not exceed 4 inches (0.1 meters).

Implement Engineering Controls during design and construction per Title 22 GAR, Chapter 10 Guam Soil Erosion and Sediment Control Regulations, including measures for protection of sinkholes. See Part 6, Attachment B for additional information.

G103090 OTHER SITE EARTHWORK

Not used.

G1040 HAZARDOUS WASTE REMEDIATION

A contaminated soil/groundwater report is not provided for this project.

Prior to starting work, conduct any additional testing that may be needed to provide a final design and comply with all applicable Federal, Regional, Guam and local regulations. Refer to UFC 3-800-10N, Environmental Engineering for Facility Construction, for additional requirements and criteria.

Radon is known to exist above EPA action levels on Guam but no monitoring has been performed on-site. No mitigation required for this project.

G1040 1.1 EXCAVATION

Contaminated soil/groundwater is not anticipated. However, if additional testing reveals the presence of contaminated soils/groundwater, perform excavation of contaminated material and dewatering in accordance with all applicable Federal, Regional, Guam, and Local regulations.

Where excavation extends into groundwater levels, employ dewatering methods on a localized basis to facilitate excavation operations. The Contractor shall provide/implement appropriate dewatering measures in accordance with Federal, Regional, Guam, and Local regulations. Non-contaminated water may be disposed of on-site.

G1040 1.2 STOCKPILED SOILS

Contaminated soil is not anticipated. However, if additional testing reveals the presence of contaminated soils, contaminated stockpiled materials shall be disposed of in accordance with all applicable Federal, Guam, and Local requirements. Clean and petroleum-impacted soil shall be segregated. All stockpiles must have appropriate dust control and storm water runoff preventive measures that are in accordance with the Storm Water Pollution Prevention Plan and Best Management Practices.

PART 3 - CHAPTER 6 / ESR G10 - Page 34

G1040 1.3 CLEAN FILL

Backfill soils that are determined as clean fill via testing and compact in accordance with the requirements listed in this RFP.

G1040 1.4 SPILLS

In the event of a spill or release of hazardous substances, pollutant, contaminant or oil, notify the Contracting Officer immediately. Take containment/control actions immediately to minimize the effect of any spill or leak. Perform clean up in accordance with Part 2, Section 01 57 19 Temporary Environmental Controls. Clean up shall be performed at the Contractor’s expense in accordance with Federal, Guam, Local and Installation requirements.

G1040 1.5 DISPOSAL

All waste materials will become the property of the Contractor; transport, dispose of or recycle all waste materials in accordance with Part 2, Section 01 57 19 Temporary Environmental Controls, and all applicable Federal and Guam regulations. Disposal of any construction debris, including excess earthwork, is required to be carried off-base to a Guam EPA-permitted C&D or hardfill disposal facility. Hauling material out of the Cantonment shall be coordinated and approved by MCBCB EV and GEPA.

The Contractor must comply with the Navy’s Comprehensive Construction and Demolition and Solid Waste Management Plan (see Part 6, Attachment B).

Hazardous wastes generated by contractors as a result of improper use and storage of hazardous materials (e.g. spills) shall also be the responsibility of the contractors.

Contractors shall test, manifest, and dispose of their hazardous wastes in accordance with applicable Federal, DoD and Government of Guam regulations. The Government will sign the hazardous waste manifest for non-Contractor generated hazardous waste (i.e. building demolition or pre-existing contamination).

--End of Section--

PART 3 - CHAPTER 6 / ESR G20 - Page 35

6.0 ENGINEERING SYSTEMS REQUIREMENTS

G20 SITE IMPROVEMENTS

SYSTEM DESCRIPTION

Provide site improvements that support project sustainability goals of Part 2 Section 01 33

29.05 20, Sustainability Reporting for Design Build.

The site improvements consist of pavements and pavement related features, landscaping and other exterior site development work related to this project. Provide a pavement design by a licensed Professional Engineer familiar with conditions local to the project site. Site design, including but not limited to design of parking and pedestrian circulation, will include coordination with the Civil Engineer and the Landscape Architect.

GENERAL SYSTEMS REQUIREMENTS

Provide site improvements as required to make a useable facility that meets functional and operational requirements, incorporates all applicable anti-terrorism, force protection and physical security requirements and blends into the existing environment.

Provide accessibility in conformance with requirements of UFC 1-200-01 , DoD Building Code (General Building Requirements).

Identify and obtain permits to comply with Federal, Guam, and local regulatory requirements associated with this work. Complete the Permits Record of Decision (PROD) form with the first design submittal package. Determine correct permit fees and pay said fees. Forward copies of permits, permit applications, and the completed PROD form to the Government's Civil Reviewer. Perform work in accordance with the obtained permits.

Minimize the impact of construction activity on operations and neighboring facilities.

Locate new site improvements at locations indicated on the drawings in another part of this RFP. If specific locations are not provided, site the improvements to develop appropriate and positive relationships with other facilities and to conform to existing development patterns.

Refer to Site Analysis and Building Requirements Sections for additional site improvement functional program information.

G2010 ROADWAYS

Repair existing roadways of bituminous pavement that are damaged during construction.

Match pavement design of existing roadway.

G201001 BASES & SUBBASES

The Contractor’s Professional Geotechnical Engineer shall determine the minimum thickness of bases and subbases needed.

http://www.wbdg.org/ffc/dod/unified-facilities-criteria-ufc/ufc-1-200-01

PART 3 - CHAPTER 6 / ESR G20 - Page 36

The following materials will not be allowed for base or subbase courses: bituminous concrete, lean concrete, cement stabilized, sand-clay, lime rock, shell, crushed concrete, and reclaimed asphalt.

Provide flexible pavement base material with a minimum CBR value of 80.

G201002 CURBS & GUTTERS

Repair curb and gutter that tie into adjacent facilities. Provide a concrete header or a curb along the edges of the pavement.

G201003 PAVED SURFACES

Provide Portland cement concrete or asphalt concrete (AC) pavement for parking lots and roadways. Porous asphalt must not be used. Recycled asphalt pavement material may not be used for bituminous concrete pavement.

G201004 MARKING & SIGNAGE

Provide thermoplastic pavement markings to designate entrance, location and pavement markings directional arrows to guide traffic on-site.

Provide signage to designate entrance and location and to guide traffic on-site.

Provide temporary pavement markings and signage throughout construction to meet phasing requirements indicated in the project program. Provide temporary signage in accordance with the Manual on Uniform Traffic Control Devices (MUTCD).

G201005 GUARDRAILS & BARRIERS

Provide guardrails, wheelstops, and bollards in accordance with UFC 3-201-01, Civil Engineering. Wheel stops may serve two parking stalls.

G201006 RESURFACING

Not used.

G201090 OTHER ROADWAYS

Not used.

G2020 PARKING LOTS

Provide parking based on the available BFR for each project site. The design of pavements must include the anticipated daily traffic (passenger cars, single unit trucks, aerial apparatus fire vehicle) over the life of the project (20 years) as well as the existing soil conditions at the site. For the parking lots, it was assumed 1,000 daily passes by passenger cars (3000 lbs), 40 daily passes by humvee sized vehicles (10,000 lbs), 20 daily passes by maintenance

PART 3 - CHAPTER 6 / ESR G20 - Page 37 trucks (25,000 lbs), 600 daily passes by large pickup trucks or SUVs (7,500 lbs), and 600 daily passes by small pickup trucks or SUVs (5,000 lbs). Section was updated in the RFP.

Provide parking lots of bituminous pavement where indicated on the drawings in Part 6.

Unsurfaced aggregate pavement may not be used.

Provide new parking and other pavement sections as required by soil conditions and determined by Designer of Record. Design pavement sections in accordance with UFC 3- 201-01 Civil Engineering. Provide pavement sections as indicated or specified in this RFP.

Provide other parking improvements including markings, signage, and landscaping See ESR G2050 for parking lot landscape requirements.

Provide handicapped parking in accordance with UFC 1-200-01 , DoD Building Code (General Building Requirements).

G202001 BASES & SUBBASES

Crushed concrete meeting specified gradation for aggregate base or subbase courses may not be used.

Provide flexible and rigid pavement base material with a minimum CBR value of 100.

G202002 CURBS & GUTTERS

Provide curb and gutter to tie into adjacent facilities. Provide concrete header around landscaped areas and around entire perimeter of site pavements. If parking lot is adjacent to walkways/sidewalks, provide concrete curb or wheelstops.

G202003 PAVED SURFACES

Provide bituminous pavement where indicated on the drawings in Part 6.

Recycled asphalt pavement material may not be used for bituminous concrete pavement.

G202004 MARKING & SIGNAGE

Provide permanent and temporary markings (pavement, curb and object), signage (regulatory, warning and guidance) and other traffic control devices as required to facilitate proper utilization of the parking areas.

Provide temporary pavement markings and signage to meet phasing requirements indicated in the Project Program. Provide temporary signage in accordance with the MUTCD.

G202005 GUARDRAILS & BARRIERS

Provide wheel stops, and bollards in accordance with UFC 3-201-01, Civil Engineering.

Wheel stops may serve two parking stalls.

http://www.wbdg.org/ccb/browse_doc.php?d=400

PART 3 - CHAPTER 6 / ESR G20 - Page 38

G202006 RESURFACING

Provide resurfacing of existing pavement by bituminous surface treatment, or bituminous overlay.

G202007 MISCELLANEOUS STRUCTURES AND EQUIPMENT

Not used.

G202090 OTHER PARKING LOTS

Not used.

G2030 PEDESTRIAN PAVING

Provide a network of Portland cement concrete (PCC) sidewalks, separated from, but connected to vehicular circulation systems, to allow for pedestrian circulation between various new and existing elements of the project. Interface new pedestrian circulation systems with existing pedestrian circulation systems and include input from the Civil Engineer, Architect, and Landscape Architect. Coordinate new walkways with connecting walkways from adjacent projects. Provide pedestrian paving and crosswalks to meet accessibility requirements in accordance with UFC 1-200-01, General Building Requirements.

Where sidewalks traverse fire lanes, design sidewalk pavement for anticipated fire truck and other vehicle loadings. Provide sidewalk pavement sections as required by soil conditions and determined by the Designer of Record. Design sidewalk pavement sections in accordance with UFC 3-201-01 Civil Engineering and the Contractor’s Professional Geotechnical Engineer’s Recommendations.

G203001 BASES & SUBBASES

The Contractor’s Professional Geotechnical Engineer shall determine the minimum thickness of bases and subbases needed for the pedestrian pavement sections, including pavement sections for sidewalks that traverse fire lanes.

G203002 CURBS & GUTTERS

Not used.

G203003 PAVED SURFACES

Provide Portland cement concrete.

G203004 GUARDRAILS & BARRIERS

G203005 RESURFACING

PART 3 - CHAPTER 6 / ESR G20 - Page 39

Not used.

G203006 OTHER WALKS, STEPS & TERRACES

Not used.

G2040 SITE DEVELOPMENT

G204001 FENCING & GATES

Provide chain link fence and gates around stormwater treatment facilities and/or stormwater management facilities where required to comply with UFC 3-201-01 Civil Engineering.

Provide corrosive and UV resistant chain link fencing, gates, and associated components to protect from Guam’s corrosive environment.

Design security fencing in accordance with UFC 4-022-03, Security Fences and Gates.

G204002 RETAINING AND FREESTANDING WALLS

Not used.

G204003 EXTERIOR FURNISHINGS

Site furnishings are required to conform to Marine Corps Base Guam Installation Appearance Plan (IAP).

G204004 SECURITY STRUCTURES

Not used.

G204005 SIGNAGE

Provide signage in accordance with the Activity's Installation Appearance Plan.

G204006 FOUNTAINS & POOLS

Not used.

G204007 PLAYING FIELDS

Not used.

G204008 TERRACE AND PERIMETER WALLS

G204009 FLAGPOLES

PART 3 - CHAPTER 6 / ESR G20 - Page 40

Not used.

G204090 OTHER SITE IMPROVEMENTS

Not used.

G2050 LANDSCAPING

Provide complete landscaping consisting of lawn, medium canopy trees, screen shrubs and synthetic turf within the medians to provide a quality, cost-effective, functional and visually appealing landscape program that will enhance the development, while complying with anti-terrorism, force protection and physical security requirements. Design the landscape to improve the aesthetics of the parking lots, soften the expanse of paving, reduce the urban heat island effect, provide shade for cars and pedestrians, reduce glare, and increase the longevity of asphalt paving and complement existing landscapes in the vicinity. Utilize native plants whenever possible that tolerate urban conditions, especially drought and heat, and utilize trees with higher carbon sequestration values, where feasible.

Guarantee landscaping for a period of one year. Provide a one year Establishment and Maintenance period. Landscaping Guarantee and Establishment and Maintenance periods must commence on the date that the inspection by the Contracting Officer shows that all landscaping under this contract has been satisfactorily installed.

Provide complete landscaping maintenance, including but not limited to, routine lawn mowing, edging, tree pruning, pest inspection/treatment, synthetic turf weed control and debris removal, monitoring and adjusting of temporary irrigation system watering/schedule, natural grass area weed control, fertilizing, debris removal, dead planting replacement and tree stake and tie adjustments, throughout the landscape establishment and maintenance period. Maintain a 14 feet (4.2m) clear height over parking aisles and 7 feet (2.1m) clear height over sidewalks. At the completion of the landscape establishment and maintenance period the landscape subcontractor will install two double bag watering systems per tree and fill each watering bag with water. Each shall be able to hold approx. 20 gallons of water for a total of 80 gallons of water per tree. One week prior to the completion of the landscape establishment and maintenance period and after the removal of the temporary irrigation system the landscape subcontractor shall aerate all natural grass areas to a minimum depth of 4 inches using a hollow tine aerator.

G205001 FINE GRADING AND SOIL PREPARATION

Based on soil analysis test results and recommendations of the existing topsoil, provide amended topsoil and/or soil amendments (including organic matter, pH adjusters, fertilizer and soil conditioners) to be incorporated into the existing topsoil to a minimum depth of 6 inches via rototilling or disking. At completion of soil preparation, fine grade all amended soil prior to planting. Ensure no uneven mounding or low points in the fine grading areas where the grading is supposed to be smooth sheet flow drainage.

G205002 EROSION CONTROL MEASURES

Prevent erosion from occurring by providing erosion control measures as required by government of Guam requirements.

PART 3 - CHAPTER 6 / ESR G20 - Page 41

G205003 TOPSOIL AND PLANTING BEDS

Provide a planting soil mixture composed of 50 percent native soil blended with 50 percent amended topsoil or soil amendments based on a soil analysis test results with recommendations for all natural grass lawn areas and tree/palm planting pit backfill material.

All newly created planting pits shall be, at a minimum, twice as wide and equally as deep as the plant’s root ball. Set tops of plant root balls even with adjacent finish grades. All trees will be provided with fertilizer tablets, quantity based on manufacturers recommendations, expandable trunk guard, and tree stakes with broad nylon webbing or UV sensitive polyethylene fabric ties. Provide a black aluminum header separating groundcover and lawn areas.

G205004 SEEDING SPRIGGING AND SODDING

Hydroseed areas to be turfed. Natural grass species in the hydroseed slurry will include a mixture of 50% Common Bermuda grass and 50% Centipede grass. Repair and grass all areas that are damaged by construction including access, storage and lay down areas and provide same guarantee and maintenance as for new landscape areas. Grass all graded areas, including areas that tie back into the existing site, outside of the landscape limit of work.

Synthetic turf may be used in the parking lot median islands where mowing maintenance could be an issue. Synthetic Turf blade width and color will match the characteristics/appearance of Emerald Zoysia grass. Synthetic Turf pile height will be 2 inches. Synthetic turf will contain a thick beige/tan thatch within the grass blades. No infill material will be required.

G205005 PLANTINGS

Preserve existing trees to the greatest extent possible. Select plant material from Approved Plant Lists found within the REV3 Final Guam Landscape Guidelines, March 2022. Other plants not found on these lists may be used if approved by the reviewing Government Landscape Architect. Final approval of new plant materials rests with the reviewing Government Landscape Architect.

Provide tree plantings throughout the site to frame new or adjacent buildings and lessen the visual impact of parking areas. Medium canopy trees will be evenly dispersed around the perimeter of the parking lots providing shade while reducing the heat island effect. Plant trees in parking lot islands. Plant trees in parking lots at the minimum rate of 1 tree per 8-10 parking spaces. The number of parking spaces provide are minimum 235 stalls and should not exceed a maximum 290 stalls. All tree plantings will include proper staking which will be removed at the end of the landscape establishment/maintenance period. Medium canopy tree sizes shall be, at a minimum, 8 feet in height or 25-gallon container size. Suggested trees include (but are not limited to):

A’abang - Eugenia reinwardtiana*

Panao - Guettarda speciosaPanao*

Chopak - Mammea odorat*

PART 3 - CHAPTER 6 / ESR G20 - Page 42

Langiti - Ochrosia mariannensis*

Atmahayan - Pipturus argenteus*

Psychotria mariana*

Hunik - Tournefortia argentea*

Hong Kong Orchid - Bauhinia blakeana*

Singapore Plumeria - Plumeria obtusa*

Screen proposed parking lots (that contain more than 12 stalls) that can be seen from surrounding roadways or recreational areas with an evergreen hedge, landscape buffer or berms. Shrub size at installation must be a minimum height of 30 inches (762 mm) and a minimum width of 24 inches (610 mm)and planted 3 feet (.9 m) on center. Suggested shrubs include (but are not limited to):

Golden Eldorado - Pseuderanthemum reticulatum*

Nanaso - Scaevola sericea*

*Indicates species from the recommended/approved native and non-native plant list for DoD lands on Guam (source: REV3 Final Guam Landscaping Guidelines, Revised Mar. 2022).

Other indicated plant species will be subject to approval by the Installation’s Natural Resources Program Manager.

If used for stormwater management, provide bioretention filters, plants, plant quantities, and soil mix in accordance with the State's Best Management Practices (BMP) Design Manual.

Compose bioretention filter soil mix of the following: 50 percent sharp sand, 30 percent topsoil, 15 percent double shredded hardwood mulch, and 5 percent peat moss thoroughly blended. Provide a 6 foot (1.8 m) wide grass sod border around the entire bioretention filter.

Grass sod species must be [ ]. Ensure that the bioretention filters are not compromised by sediment deposits during construction. Install bioretention filters only after upstream areas tributary to the bioretention filter location have been fully stabilized.

Tree setback requirements for underground utilities will meet requirements found in the NAVFAC Marianas Public Works Utilities Criteria (see Part 6, Attachment I, Reference 3C).

Any changes to the selected tree species shall meet the latest UFC-4-010-01 DoD Minimum Anti-terrorism (ATFP) Standards for Buildings setback distance and landscape requirements. Adjacent structures, paving and utilities within the recommended clearance of trees shall be protected by root barriers (24” minimum depth.).

G205006 PLANTERS

Not used.

G205007 IRRIGATION SYSTEMS

A permanent below grade irrigation system will not be required.

PART 3 - CHAPTER 6 / ESR G20 - Page 43

During the landscape establishment and maintenance period, provide a temporary on-grade irrigation system utilizing water conserving, highly efficient, automatic irrigation equipment with a reduced pressure backflow preventer, rain shut off device and controller to irrigate landscaped areas with plantings, including trees located in the in the raised parking lot planting bed islands and adjacent to the trash enclosure area. Where possible, provide a separate irrigation system for trees from other plant material (natural grass). Use non-potable water sources whenever possible. At the completion of the landscape establishment and maintenance period, the temporary irrigation system will be removed. Any damage to the new landscape due to the presence and removal of the temporary irrigation system will be replanted.

Valve the irrigation system in accordance with exposure and plant evapotranspiration (ET) requirements. A watering schedule will be required to be submitted for approval prior to the start of the landscape establishment and maintenance period indicating how watering will be scheduled, accounting for seasonal changes in rain amounts and air temperatures (provide rain gauge), to assist the newly installed plants to transition from every day watering to no water by the end of the maintenance period. The intent is to assist the new plant material in acclimating to natural rain fall as a future source of water. The watering schedule will include infrequent deep watering periods to promote deep root structures to assist plant material through periods of drought.

G205090 OTHER LANDSCAPING

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