Attachment B SPECIFICATIONS.pdf

SPECIFICATIONS

WOMBLE RANGER DISTRICT

RANGER AND ASSISTANT RANGER

HOUSES RENOVATIONS

USDA FOREST SERVICE

OUACHITA NATIONAL FOREST

WOMBLE RANGER DISTRICT

MOUNT IDA, ARKANSAS

Technical Services Team Leader Date

District Ranger Date

Attachment B 12445123Q0034

Specifications

SPECIFICATIONS INDEX

DIVISION 1 – GENERAL REQUIREMENTS

SECTION 01 10 00 SUMMARY OF WORK

SECTION 01 31 13 PROJECT COORDINATION

SECTION 01 33 00 SUBMITTAL PROCEDURES

SECTION 01 45 00 QUALITY CONTROL

SECTION 01 74 23 FINAL CLEANING

SECTION 01 77 00 CONTRACT CLOSEOUT

DIVISION 2 – EXISTING CONDITIONS

SECTION 02 41 00 – DEMOLITION

SECTION 02 42 51 – CARPET REMOVAL

SECTION 02 82 00 – ASBESTOS REMEDIATION

SECTION 02 83 00 – LEAD REMEDIATION

SECTION 02 85 00 – MOLD REMEDIATION

DIVISION 6 – WOOD AND PLASTICS

SECTION 06 10 00 – ROUGH CARPENTRY

SECTION 06 20 00 - FINISH CARPENTRY

DIVISION 7 – MOISTURE CONTROL

SECTION 07 01 50.23 ROOF REMOVAL

SECTION 07 21 00 - THERMAL INSULATION

SECTION 07 31 13.13 FIBERGLASS-REINFORCED ASPHALT SHINGLES

SECTION 07 46 33 VINYL SIDING

DIVISION 8 – OPENINGS

SECTION 08 11 00 – METAL DOORS AND FRAMES

SECTION 08 71 00 – FINISH HARDWARE

DIVISION 9 – FINISHES

SECTION 09 91 00 – PAINTING

DIVISION 22 – PLUMBING

SECTION 22 00 00 PLUMBING GENERAL

DIVISION 23 - HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

SECTION 23 00 00 - HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

SECTION 23 34 00 - VENTILATING EQUIPMENT

DIVISION 26 – ELECTRICAL

SECTION 26 01 00 BASIC ELECTRICAL REQUIREMENTS

SECTION 26 20 00 INTERIOR DISTRIBUTION SYSTEM TESTING

DIVISION 32 – EXTERIOR IMPROVEMENTS

SECTION 32 01 90 - MAINTENANCE OF PLANTING

Attachment B

DIVISION 1

GENERAL REQUIREMENTS

01 10 00 – SUMMARY OF WORK

The project is located at the Womble houses, 1322 and 1406 Hwy 270 E, Mount Ida, AR 71957.

The contractor shall provide all labor, tools, equipment, and materials to perform the work listed below per the specifications:

1. Assistant Ranger House:

Abate mold from entire interior Remove chimney Remove interior brickwork from wood stove Repair sagging floor joists in vicinity of interior brickwork Repair structure in vicinity of brick and chimney Install siding on wall where chimney was located Power wash exterior of house Remove attic fan and replace with insulated attic access Remove attic access from bathroom and repair and insulate ceiling Install new bathroom exhaust fan Install new porch roof columns Replace rear porch glass/screen door Replace rear door Replace rear porch ceiling fan Remove and replace all carpeting and padding Remove and replace damaged paneling and trim Remove peeling interior paint and repaint walls and bathroom ceiling Construct crawl space access door Replace one crawl space vent Mow and weedeat yard Evaluate electrical system for safety concerns, energize electrical system if safe and evaluate for proper operation (submit list of deficiencies)

Pressure and flush the plumbing system and evaluate for proper operation (submit list of deficiencies)

Replace water heater with 40 gallon, 36,000 BTU water heater Service HVAC Inspect HVAC ductwork and repair leaks and insulation Clean entire interior

2. Ranger House:

Abate mold from interior Remove all wall and ceiling coverings and trim in two main floor bedrooms, main floor bathroom and main floor hallway

Attachment B

Remove all fixtures and cabinets from downstairs bathroom Remove all carpeting and padding Remove plywood ceiling and insulation in basement Protect existing hardwood floors Pressure wash exterior Repair damaged siding Trim tree limbs near house

3. Option 1 – Ranger House roof

Remove and replace roof underlayment and shingles Remove and replace any damaged roof decking Remove and replace and paint any damaged facia trim Remove and replace damaged gutters and downspouts

4. Option 2 – Assistant Ranger House roof

Remove and replace roof underlayment and shingles Remove and replace any damaged roof decking Remove and replace and paint any damaged facia trim

01 31 13 – PROJECT COORDINATION

The contractor shall perform work in a manner that will protect the safety of public and employees. The contractor shall perform the work between the hours of 7:00 AM and 5:00 PM Monday through Friday excluding Federal Holidays unless arrangements have been made with the COR.

During the Contract, the construction area will be open for employees to work in the buildings. The Contractor’s work shall not adversely affect the operation. The Contractor is responsible for keeping the site in a safe condition. Hazards to the public and government employees shall be well marked in compliance with OSHA regulations.

01 33 00 – SUBMITTAL PROCEDURES

The contractor shall furnish submittals on items they intend to use on the project.

Submittals shall be made within fifteen (15) days prior to commencing any work that relates to a respective submittal. Approvals are not automatic. Incomplete information on the proposed items will result in rejection.

The contractor shall submit one electronic copy of the manufacturer's description of all "or equals" proposed materials that will be used on the project. This description shall include:

1) Product name and model number

2) Manufacturer

3) Product description (include sizes if different from specified"

4) Technical data

Attachment B

5) Warranty

All differences between the specifications or name brands listed shall be highlighted on the submittal noting all differences.

01 45 00 – QUALITY CONTROL

It is the Government's intent that expert and experienced workers perform the work described in this contract. The Contractor shall provide workers with the necessary skills and knowledge to complete the work in an expert and competent manor even if this requires bringing in outside help such as factory representatives, subcontractors, or consultants.

01 74 23 - FINAL CLEANING

Part 1 – Not used

Part 2 – Not used

Part 3 – Execution

3.1 Disposal of Waste

3.1.1 General: Except for items or materials salvaged, recycled, or otherwise reused, remove waste materials from Project site and legally dispose of them in a landfill or incinerator acceptable to authorities having jurisdiction.

3.1.1.1 Except as otherwise specified, do not allow waste materials that are to be disposed of accumulate on-site.

3.1.1.2 Burning: Do not burn waste materials.

3.1.1.3 Disposal: Transport waste materials off site to property and legally dispose of them.

3.2 Final Cleaning

3.2.1 Inspect interior and exterior surfaces, including concealed spaces, in preparation for substantial completion and occupancy.

3.2.1.1 Remove dirt, dust, litter, corrosion, solvents, discursive paint, stains, and extraneous markings.

3.2.1.2 Wash and polish glass, metal, ceramic and plastic surfaces.

3.2.1.2.1 Protect Work that has been cleaned, and do not allow cleaning operations to damage or soil previously cleaned Work.

3.2.1.3 Remove surplus materials, except materials intended for maintenance.

Attachment B

3.2.1.4 Remove tools and equipment used in construction, but not property of job site or its designee.

3.2.1.5 Remove detachable labels and tags.

3.2.1.5.1 File with manufacturer's specifications for specific material for Owner's records.

3.2.1.6 Repair damaged materials to specified finish, or remove and replace them.

3.2.1.7 Remove calcification and repair damage from calcification and other chemicals.

3.2.2 Upon completion of construction, leave Worksite in clean, neat condition, satisfactory to Owner or its designee.

01 77 00 – CONTRACT CLOSEOUT

The contractor shall remove all materials and construction debris as well as impacted vegetation from the site.

DIVISION 2

SECTION 02 41 00

DEMOLITION

PART 1 – GENERAL

1.1 General Requirements

Do not begin demolition or deconstruction until authorization is received from the Contracting Officer. Remove rubbish and debris from the project site; do not allow accumulations inside or outside the buildings. The work includes demolition, deconstruction and removal of resulting rubbish and debris. Remove rubbish and debris from Government property daily unless contained in a roll off dumpster on site, unless otherwise directed. Store materials that cannot be removed daily in areas specified by the Contracting Officer. In the interest of occupational safety and health, perform the work in accordance with EM 385-1-1, Section 23, Demolition, and other applicable Sections.

1.3 ITEMS TO REMAIN IN PLACE

Comply with FAR 52.236-9 to protect existing vegetation, structures, equipment, utilities, and improvements. Coordinate the work of this section with all other work indicated. Construct and maintain shoring, bracing, and supports as required. Ensure that structural elements are not overloaded. Increase structural supports or add new supports as may be required as a result of any cutting, removal, deconstruction, or demolition work performed under this contract. Do not overload structural elements or pavements to remain. Provide new supports and reinforcement for existing construction weakened by demolition, deconstruction, or removal work. Repairs, reinforcement, or structural replacement require approval by the Contracting Officer prior to performing such work.

1.3.1 Existing Construction Limits and Protection

Do not disturb existing construction beyond the extent indicated or necessary for installation of new construction without approval from the Contracting Officer.

Provide temporary shoring and bracing for support of building components to prevent settlement or other movement. Provide protective measures to control accumulation and migration of dust and dirt in all work areas. Remove dust, dirt, and debris from work areas daily.

1.3.2 Weather Protection

For portions of the building to remain, protect building interior and materials and equipment from the weather at all times. Where removal of existing roofing is necessary to accomplish work, have materials and workmen ready to provide adequate and temporary covering of exposed areas.

Attachment B

1.3.3 Trees

Protect trees within the project site which might be damaged during demolition or deconstruction. Replace any tree designated to remain that is damaged during the work under this contract with like-kind or as approved by the Contracting Officer.

1.4 BURNING

The use of burning at the project site for the disposal of refuse and debris will not be permitted.

PART 2 PRODUCTS – Not used

PART 3 EXECUTION

3.1 EXISTING FACILITIES TO BE REMOVED

3.1.1 Structures

a. Remove chimney indicated to be removed to grade.

b. Remove siding on entire wall on which the chimney was located.

c. Remove damaged sheathing on wall on which the chimney was located.

d. Report damage to structure after removal of chimney and siding to the

Contracting Officer.

e. Deconstruct structures in a systematic manner from the top of the structure to the ground. Complete demolition work above each tier or floor before the supporting members on the lower level are disturbed. Deconstruct concrete and masonry walls in small sections. Remove structural framing members and lower to ground by means of derricks, platforms hoists, or other suitable methods as approved by the Contracting Officer.

f. Locate demolition and deconstruction equipment throughout the structure and remove materials so as to not impose excessive loads to supporting walls, floors, or framing.

3.1.14 Patching

Where removals leave holes and damaged surfaces exposed in the finished work, patch and repair these holes and damaged surfaces to match adjacent finished surfaces, using on-site materials when available. Where new work is to be applied to existing surfaces, perform removals and patching in a manner to produce surfaces suitable for receiving new work. Make finished surfaces of

Attachment B patched area flush with the adjacent existing surface and match the existing adjacent surface as closely as possible to texture and finish.

3.1.1 Title to Materials

All materials and equipment removed and not reused or salvaged, become the property of the Contractor and must be removed from Government property.

3.5.2 Burning on Government Property

Burning of materials removed from demolished and deconstructed structures will not be permitted on Government property.

SECTION 02 42 51

CARPET REMOVAL

PART 1 – Not used

PART 2 – Not used

PART 3 – EXECUTION

3.1 EXAMINATION

3.1.1 Verification of Conditions

Examine areas and conditions under which work is to be performed. Identify conditions detrimental to proper or timely completion. Do not proceed until unsatisfactory conditions have been corrected.

3.2 PREPARATION

Vacuum used carpet before removal.

3.3 APPLICATION

3.3.1 Carpet and Pad Removal

Remove used carpets and pads in large pieces, roll tightly, and pack neatly in dumpster. Include carpet scrap and waste from new installation. Deposit only clean, dry carpet in containers. "Clean" is defined as free from asbestos contamination and lead paint contamination. Asbestos containing floor tiles might be present under carpet padding. Take care not to disturb or damage tiles.

3.3.2 Roll off Dumpster Disposal

Place used carpet in roll off dumpster. Use effective packing techniques to maximize the amount of material in the dumpster. When dumpster is full, contact supplier to coordinate pickup and drop-off of replacement dumpster.

3.3.4 Interior Operations

Seal ductwork. Damp mop hard surface floors after removal.

SECTION 02 82 00

ASBESTOS REMEDIATION

1.1 Definition

1.1.1 Competent Person

A person meeting the requirements for competent person as specified in 29 CFR

1926.1101 including a person capable of identifying existing asbestos hazards in the workplace and selecting the appropriate control strategy for asbestos exposure, who has the authority to take prompt corrective measures to eliminate them, and is specifically trained in a training course which meet the criteria of EPA's Model Accreditation Plan (40 CFR 763) for project designer or supervisor, or its equivalent. The competent person must have a current State of Arkansas asbestos contractors or supervisors license.

PART 2 – Not used

PART 3 – EXECUTION

Perform asbestos related work in accordance with 29 CFR 1926.1101, 40 CFR 61-SUBPART M, NAVFAC P-502 and as specified herein. Use EPA approved removal procedures. Wear and utilize protective clothing and equipment. No eating, smoking, drinking, chewing gum, tobacco, or applying cosmetics is permitted in the asbestos work or control areas. Personnel of other trades not engaged in the removal and demolition of asbestos containing material must not be exposed at any time to airborne concentrations of asbestos unless all the personnel protection and training provisions of this specification are complied with by the trade personnel. Shut down the building heating, ventilating, and air conditioning system and cap the openings to the system prior to the commencement of asbestos work. Power to the regulated area must be locked-out and tagged in accordance with 29 CFR 1910.147. All electrical work must be performed by a licensed electrician. Stop abatement work in the regulated area immediately when the airborne total fiber concentration exceeds established limits. Correct the condition to the satisfaction of the Contracting Officer, including visual inspection and air sampling. Work must resume only upon notification by the Contracting Officer. Corrective actions must be documented. If an asbestos fiber release or spill occurs outside of the asbestos control area, stop work immediately, correct the condition to the satisfaction of the Contracting Officer including clearance sampling, prior to resumption of work.

a. A Competent Person must supervise the work.

3.1 Protection of Existing Work to Remain

Perform work without damage or contamination of adjacent work. Where such work is damaged or contaminated as verified by the Contracting Officer using visual inspection or sample analysis, it must be restored to its original condition or decontaminated by the Contractor at no expense to the Government as deemed appropriate by the Contracting Officer. This includes inadvertent spill of dirt, dust, or debris in which it is reasonable to conclude that asbestos may exist.

When these spills occur, stop work immediately. Then clean up the spill. When satisfactory visual inspection is obtained work may proceed at the discretion of the Contracting Officer.

3.2 Items to remediate

See asbestos survey report. Addendum will list which items to remove and which to encapsulate.

SECTION 02 83 00

LEAD REMEDIATION

1.2 Definitions

1.2.1 Competent Person

As used in this section, refers to a person employed by the Contractor who is trained in the recognition and control of lead, cadmium and chromium hazards in accordance with current federal, State, and local regulations and has the authority to take prompt corrective actions to control the lead, cadmium and chromium hazard. The Contractor may provide more than one CP as required to supervise and monitor the work. The CP must be a Certified Industrial Hygienist (CIH) certified by the American Board of Industrial Hygiene or a Certified Safety Professional (CSP) certified by the Board of Certified Safety Professionals or a licensed lead-based paint abatement Supervisor/Project Designer in the State of Arkansas.

1.2.2 Lead

Metallic lead, inorganic lead compounds, and organic lead soaps. Excludes other forms of organic lead compounds. The use of the term Lead in this section also refers to paints which contain detectable concentrations of Cadmium and Chromium. For the purposes of the section lead-based paint (LBP) and paint with lead (PWL) also contains cadmium and chromium.

1.2.3 Lead-Based Paint (LBP)

Paint or other surface coating that contains lead in excess of 1.0 milligrams per centimeter squared or 0.5 percent by weight.

1.3.1 Protection of Existing Areas To Remain

Project work including, but not limited to, lead, cadmium, chromium hazard abatement work, storage, transportation, and disposal must be performed without damaging or contaminating adjacent work and areas. Where such work or areas are damaged or contaminated, restore work and areas to the original condition.

1.3.2 Coordination with Other Work

Coordinate with work being performed in adjacent areas to ensure there are no exposure issues. Explain coordination procedures in the Lead, Cadmium, Chromium Compliance Plan and describe how the Contractor will prevent lead, cadmium and chromium exposure to other contractors and Government personnel performing work unrelated to lead, cadmium and chromium activities.

PART 2 – Not used

PART 3 – EXCECUTION

Perform lead related work in accordance with 29 CFR 1926.62, 40 CFR 260-265, 268, 745 and as specified herein. Use EPA approved removal procedures. Wear and utilize protective clothing and equipment. No eating, smoking, drinking, chewing gum, tobacco, or applying cosmetics is permitted in the lead work or control areas. Personnel of other trades not engaged in the removal and demolition of lead containing material must not be exposed at any time to airborne concentrations of lead unless all the personnel protection and training provisions of this specification are complied with by the trade personnel. Shut down the building heating, ventilating, and air conditioning system and cap the openings to the system prior to the commencement of lead work. Power to the regulated area must be locked-out and tagged in accordance with 29 CFR

1910.147. All electrical work must be performed by a licensed electrician. Stop abatement work in the regulated area immediately when the airborne concentration exceeds established limits. Correct the condition to the satisfaction of the Contracting Officer. Work must resume only upon notification by the Contracting Officer. Corrective actions must be documented. If a lead release or spill occurs outside of the lead control area, stop work immediately and correct the condition to the satisfaction of the Contracting Officer prior to resumption of work.

a. A Competent Person must supervise the work.

3.1 Protection of Existing Work to Remain

Perform work without damage or contamination of adjacent work. Where such work is damaged or contaminated as verified by the Contracting Officer using visual inspection or sample analysis, it must be restored to its original condition or decontaminated by the Contractor at no expense to the Government as deemed appropriate by the Contracting Officer. This includes inadvertent spill of dirt, dust, or debris in which it is reasonable to conclude that lead may exist.

When these spills occur, stop work immediately. Then clean up the spill. When satisfactory visual inspection is obtained, the work may proceed at the discretion of the Contracting Officer.

3.2 Items to remediate

Remove the lead paint from the following locations of the Assistant Ranger House:

Entry from rear enclosed porch Bathroom ceiling Hallway ceiling trim Storage room door frame in carport

Remove the lead paint from the following locations of the Ranger House:

Interior and exterior of the basement windows

Attachment B

SECTION 02 85 00

MOLD REMEDIATION

1.1 REFERENCES

ANSI/IICRC S520 (2015) Standard and Reference Guide for Professional Mold Remediation

IICRC S500 (2015) Standard and Reference Guide for Professional Water Damage Restoration

PART 2 - PRODUCTS

2.1 DISINFECTANTS, BIOCIDES, SANITIZING SOLUTIONS AND FUNGICIDAL

AGENTS, (EPA)

Must be EPA Registered for the use detailed in the Microbial Remediation Plan and used in accordance with the manufacturer's specifications.. Provide SDS sheets to the Contracting Officer for any chemicals that will be used during the performance of the work for approval.

2.2 HAZARD COMMUNICATION

Adhere to all parts of 29 CFR 1926.59 and provide the Contracting Officer with a copy of the Safety Data Sheets (SDS) for all materials brought to the site.

PART 3 – EXECUTION

3.1 WARNING SIGNS AND LABELS

Provide bilingual warning signs printed in English and Spanish at all approaches to the work areas IICRC S500. Locate signs at such a distance that personnel may read the sign and take the necessary protective steps required before entering the area. Warning signs may be in the form of continuous plastic tape. The warning signs must have black characters on a yellow background.

WARNING

DO NOT ENTER

MICROBIAL REMEDIATION WORK IN PROGRESS

Alternate wording for the warning signs will be approved by the Contracting Officer.

3.2 GENERAL REQUIREMENTS

3.2.1 Pre-Microbial Remediation Work Conference

Meet with the Contracting Officer prior to beginning work to discuss in detail the Microbial Remediation Plan, including work procedures and safety precautions. Once approved by the Contracting Officer, the plan will be enforced as if a part of this

Attachment B specification. Any variances to the specification as a result of the plan must be specifically identified to allow for free discussion and approved by the Contracting Officer in writing prior to starting work. Before work in areas with Asbestos Containing Materials (ACM), Presumed Asbestos Containing Materials (PACM) and Lead begins, identify the presence, location, and quantity of ACM, PACM and Lead. Ensure proper notification of regulatory authorities. Consult with Contracting Officer to obtain facility ACM / LBP surveys. Mitigate any disturbance of painted/coated surfaces in accordance with 29 CFR 1926.62, 29 CFR 1926.1126 and 29 CFR 1926.1127.

3.2.2 Containment Entry / Exit Procedure

Ensure that each worker and authorized visitor follows entry and exit procedures detailed in the Microbial Remediation Plan.

3.3 REMOVAL PROCEDURES

3.3.1 Protection of Existing Work Areas

Perform work in a manner to minimize the damage or contamination to areas outside or directly adjacent to the work area. Inspect areas inside and outside proposed work areas to identify existing damage and notify Contracting Officer prior to start of work. Where materials outside work area are damaged or contaminated as a result of the Contractors work efforts as verified by the Contracting Officer using visual inspection or sample analysis, it must be restored to its original condition or decontaminated by the Contractor at no expense to the Government as deemed appropriate by the Contracting officer.

Should adjacent or outside areas become contaminated as a result of the Contractors work efforts, stop work immediately. Clean the newly contaminated areas at no additional expense to the Government. The work may proceed at the discretion of the Contracting Officer once the area has been verified by visual inspection as restored.

3.3.2 Remediation of Fungally Contaminated Building Materials

The removal of contaminated materials must follow in general the listed sequence of work. The Contractor may make changes to improve work flow with the approval of the Contracting Officer.

a. Provide level of containment and PPE required by the Microbial Remediation Plan.

b. Disable all HVAC units and exhaust fans in the area to be remediated. Cover and seal all supply vents, return vents, and air handling units in the project area using two layers of 6 mil poly (IHFOM, CH 13, Sec. 3).

c. Protect materials to remain in work area. Where possible, clean all materials to be salvaged in place to prevent possible cross-contamination created by moving materials through non-remediation areas.

d. Remove undamaged items and materials to be cleaned and salvaged from the work area. Store materials in an area with relative humidity maintained below 60

Attachment B percent and where temperatures will not damage the material. Notify Contracting Officer of existing damage to items prior to removal.

e. Set up containments, including protection of materials remaining within the containment and AFUs. Notify Contracting Officer that the area is prepared for remediation activities.

f. Pre-demolition inspection by the Contracting Officer.

g. Demolition and removal / cleaning of contaminated materials.

h. Post-remediation inspection by the Contracting Officer.

i. Perform final cleaning in the containment.

j. Clean carpet in the containment if salvageable.

k. Clearance inspection by the Contracting Officer.

l. Duct and HVAC cleaning, if necessary.

m. Deconstruction of containment, removal of AFUs.

n. Return previously items that were removed and cleaned to the occupied area.

3.3.3 Remediation Procedures

3.3.3.1 Remediation of Non-Porous Materials

Method of remediating non-porous items:

a. HEPA vacuum all surfaces.

b. Damp wipe all surfaces using clean water or a detergent solution.

c. Ensure all cleaned surfaces are dried thoroughly.

3.3.3.2 Semi-Porous Materials (Unfinished Wood)

Use this method for remediating unfinished wood-based items, including wood and wood framing in wall cavities:

a. Cleaning

(1) HEPA vacuum all surfaces.

(2) Scrub surfaces with a brush and detergent to remove mold.

(3) Ensure all cleaned surfaces are dried thoroughly.

(4) HEPA vacuum all surfaces to remove dust.

(5) Repair finishes as required to match original.

b. Removal

Where unfinished wood product has been structurally damaged, remove and replace with an equivalent product. This includes wall studs and sheathing, such as OSB used in flooring, wall, or roof construction. Lightly mist mold contaminated material before removal.

3.3.3.3 Semi-Porous Materials

Use this method for surface cleaning semi-porous materials such as concrete, vinyl wall covering, linoleum, leather furniture, and finished wood products:

a. HEPA vacuum all surfaces.

b. Damp wipe surfaces using clean water or a detergent solution. Avoid over-wetting the material. Ensure all materials are dried thoroughly

3.4 DETAILED SEQUENCE OF WORK FOR MOLD REMOVAL UNDER CONTAINMENT

3.4.1 Preparation for Remediation Work

a. Provide level of containment and PPE required for the remediation based on the Microbial Remediation Plan.

b. Disable all HVAC units and exhaust fans in the area to be remediated.

c. Remove undamaged materials from the work area if they are to be salvaged but cannot be cleaned in place. Store materials in an area with relative humidity maintained below 60 percent (IHFOM, CH 13, Sec. 3) and where temperatures will not damage the material. Notify Contracting Officer of existing damage to items prior to removal. Clean materials using procedures detailed in Remediation Procedures.

d. Remove supply diffusers, return grilles and exhaust grilles. Clean diffusers and grilles using procedures detailed in Remediation Procedures.

e. Construct containment barriers. Existing walls can be used as a portion of the containment barriers if existing openings in walls (such as doors, wall openings, vents) are sealed using 6 mil polyethylene.

f. Install the AFUs and dehumidifiers.

g. Seal supply, return, and exhaust openings with 6 mil polyethylene sheeting and protect intakes to air handling units. Air handling units are to remain off.

h. Install all equipment needed for removal work in the containment area to minimize egress during demolition.

i. The Contracting Officer will inspect the containment to verify that the containment is properly constructed and the containment area has an overall negative pressure of 0.02 to 0.04 inch water column AIHA IMOM08-679 relative to the outside and adjacent work areas not undergoing active remediation, prior to beginning demolition work.

3.4.2 Demolition

a. Remove mold contaminated materials to be discarded, such as paper, and furniture. Double bag material in 6 mil (IHFOM, CH 13, Sec. 3) poly bags. Seal poly bags using duct tape inside the containment. HEPA vacuum bags before removing them from the containment or airlock.

When possible, pass the bags directly from the containment or airlock to the outside. Transport bags to a dumpster. Do not leave the bags at the building / house.

b. Lightly mist all contaminated materials that are being discarded to minimize generation of airborne mold spores during demolition/removal.

c. Remove contaminated gypsum wallboard (GWB) at the preliminary limits of demolition specified in the Microbial Remediation Plan. Inspect back side of removed GWB. If mold is observed on the back side of the GWB, report this condition to the Contracting Officer. After obtaining Contracting Officer approval, continue removing GWB until no mold is observed. If hidden mold is discovered that will extend past the extents of the containment, stop work immediately and reconstruct the containment to extend past the suspected contamination. Re-evaluate level of containment and PPE. Continue to operate AFUs during reconfiguring of containment.

d. Remove drywall by cutting in pieces as large as possible to minimize aerosolization of fungal spores. Drywall screws can either be backed out during removal or later during cleanup.

e. Use dust collection attachments on all power tools, such as sanders, saws, to capture dust created when using the tools. Outlet of dust collector should discharge into inlet of AFU.

f. Remove fiberglass insulation behind removed gypsum board.

g. If wood studs are contaminated, HEPA vacuum all surfaces, scrub them with a brush and detergent to remove mold. After scrubbing studs, HEPA

Attachment B vacuum again to remove any remaining dust. Replace wood studs with damage severe enough to reduce the structural capacity of the member.

Prior to removal of any structural member consult with the Contracting Officer.

h. Clean all metal framing with a dilute detergent solution. Clean metal framing with light rust using steel wool and coat with a rust inhibiting paint. Replace metal framing with rust damage severe enough to reduce the structural capacity of the member. Prior to removal of any structural material, consult with the Contracting Officer.

i. Remove contaminated carpet scheduled for removal.

j. Place removed gypsum board, insulation, carpet and remaining debris in two layers of 6 mil (IHFOM, CH 13, Sec. 3) poly bags. Seal poly bags using duct tape inside the containment. HEPA vacuum bags before removing them from the containment or airlock. When possible pass the bags directly from the containment or airlock to the outside. Transport bags to a dumpster. Do not leave the bags at the building / house.

k. Remediation workers must HEPA vacuum their PPE, then remove their PPE within the airlock chamber. Discard disposable coverall suits into a 6 mil (IHFOM, CH 13, Sec. 3) poly bag.

3.4.3 Post-Demolition Inspection

a. The Contracting Officer will inspect the containment area to verify that all contaminated materials have been removed.

b. Allow a minimum of 12-hours after completion of removal work, with AFUs operating, for airborne dust in the containment to settle or be removed by the AFUs.

3.4.4 Cleaning after Demolition, and Cleaning of Settled Spores from Porous / Non- Porous Materials

a. Continue to operate AFUs during cleaning.

b. Clean exposed surfaces.

(1) HEPA vacuum all surfaces.

(2) Damp wipe all non-porous exposed surfaces including polyethylene sheets used to protect materials, external surfaces of ductwork, studs, and floors with clean rag and clean potable water or detergent solution.

(3) Remove poly sheeting inside the containment.

(4) HEPA vacuum all surfaces protected by poly sheeting.

(5) Damp wipe non-porous surfaces protected by poly sheeting with clean water or a detergent solution.

(6) Clean carpet using procedures previously specified in paragraph POROUS MATERIALS above.

c. Final clearance inspection will be conducted by Contracting Officer.

Clearance inspections will be performed using the procedures detailed in Post-Remediation Inspection. If areas fail final clearance inspections, additional corrective actions taken by the contractor will be at no additional cost to the Government. Maintain containments in place until spaces are inspected and accepted by the Government as being fully remediated. The Government will determine whether additional cleaning is required by the Contractor and whether the clearance process will be repeated.

3.5 DUCT AND HVAC SYSTEM CLEANING

3.5.1 Contractor Qualifications

a. The HVAC cleaning contractor must be a certified member of NADCA.

b. The HVAC cleaning contractor must have at least one individual with Ventilation System Mold Remediator Qualifications certified by NADCA onsite during duct and HVAC system cleaning.

3.5.2 Inspection

IH must visually inspect the HVAC system serving all work areas, and determine if additional remediation is needed to clean the HVAC system, thus preventing re-contamination. Coordinate inspection with the contracting officer. Notify the Contracting Officer of the inspection results before proceeding with HVAC microbial remediation.

3.5.3 HVAC Microbial Remediation

Conduct the following actions:

a. Follow requirements of the NADCA ACR "Standard for Assessment, Cleaning, and Restoration of HVAC Systems".

b. Using a "gassing" or "fogging" method of cleaning with gaseous chlorine dioxide or ozone is not allowed.

c. Disable all HVAC equipment prior to cleaning any component of the system.

d. Use this method for cleaning the air handling units, terminal units, blowers and exhaust fans:

(1) Construct a limited containment around equipment to be cleaned. Provide appropriate PPE for workers.

(2) Remove filters. Seal filters in 6 mil (IHFOM, CH 13, Sec. 3) poly bags for disposal.

(3) Disassemble units as necessary to clean components.

Contractor is responsible for correctly reassembling equipment after cleaning.

(4) Clean disassembled components within the containment or in a separate two chamber cleaning containment. Seal disassembled components in 6 mil (IHFOM, CH 13, Sec. 3) poly bags for transport out of building / house. HEPA vacuum bags before removing them from the containment or airlock.

(5) HEPA vacuum all surfaces.

(6) Damp wipe all non-porous surfaces and components with clean water or a detergent solution.

e. Use this method for cleaning HVAC coils:

(1) Clean coils using a method which will render the coil visibly clean. Coil cleaners must be non-acidic / alkaline, detergent based.

Clean condensate drain pans. The drain for the condensate drain pan must be operational during the cleaning.

(2) Rinse coils and drain pans with clean water to remove any latent residues.

(3) Cleaning methods must not cause damage to the coil surface or fins.

(4) Cleaning must restore the coil pressure drop to within 10 percent of the pressure drop measured when the coil was first installed. If the original pressure drop is not known, the coil is considered clean only if the coil is free of foreign matter and chemical residue.

f. Use this method for cleaning the duct system:

(1) During cleaning, connect a vacuum collection system to the downstream end of the section being cleaned. The vacuum collection device must be of sufficient power to render all areas of duct being cleaned under negative pressure relative to rooms and

Attachment B areas of duct not being cleaned. Negative pressure must be verified at the furthest point from the collection system with a micromanometer and verification measurements included in the IH Daily Report.

(2) Equip the vacuum collection systems with HEPA filters.

Exhaust the vacuum collection systems directly to the outside.

(3) Use mechanical agitation devices to dislodge debris adhered to the ductwork, such that debris may be safely conveyed to vacuum collection devices. Cleaning methods must not damage the integrity of the ductwork, nor damage porous surface materials such as liners inside the ductwork.

(4) HEPA vacuum duct surfaces.

(5) When possible, damp wipe metal duct surfaces with clean water or detergent solution. Do not wet fibrous glass thermal or acoustical insulation.

(6) Identify areas where there is evidence of damage to or uncleanable mold in duct insulation. The Contracting Officer will make the decision to discard the insulation, if necessary.

g. Final clearance of HVAC and duct system will be based on a visual assessment (no visible dust, no visible mold) by Contracting Officer. If HVAC fails final clearance inspection, additional corrective actions taken by the contractor will be at no additional cost to the Government.

3.6 FIRE PROTECTION

Provide portable fire extinguishers within the containment area and outside the decontamination unit. Fire extinguishers Must be rated for the class of fire hazards in the work area and must be sized for coverage of the areas within the containment. At a minimum, one 10 pound ABC fire extinguisher for every 1,000 square feet must be strategically placed around the containment. Personnel must be trained for emergency egress and the use of fire extinguishers. Notify fire officials of work activities as required.

IICRC S500

3.7 CONSTRUCTION BARRIERS

a. Provide interior shoring, bracing, or support to prevent movement, settlement, or collapse of structure or element to be demolished and adjacent facilities or work to remain. Shoring, bracing or support will be necessary when structural wood studs or metal framing need to be removed and replaced when they cannot be cleaned.

b. Do not disturb microbial-contaminated building materials while isolating work areas. This precaution prevents the release of microbial spores.

c. Workers must wear respirators and other PPE as outlined in the microbial remediation plan when installing critical barriers where microbial contaminated surfaces (walls or surfaces with visible settled dusts) are likely to be disturbed. Operate an AFU if disturbance is likely during setup.

d. Monitor the air pressure differential across work area containments. The monitoring system must be in place before the start of remedial activities.

Verification by the Industrial Hygienist is required prior to the start of the microbial remediation.

3.8 QUALITY ASSURANCE / QUALITY CONTROL REQUIREMENTS

3.8.1 Contractor Qualifications

Work must be performed by a qualified remediation contractor. Contractor must carry insurance that specifically covers mold remediation.

a. Remediation contractor's on-site supervisor must have one of the following certifications: Certified Microbial Remediator (CMR), Certified Microbial Remediation Supervisor (CMRS), or Applied Microbial Remediation Specialist (AMRS). Qualified supervisor must be onsite whenever active remediation is being performed. Set-up activities may be performed without supervisor present; qualified supervisor must review set-up prior to start of work.

b. Mold remediation workers must be given training in PPE and mold remediation activities as required for their particular job. Microbial remediation plan must provide details of worker training.

3.8.2 Waste Management and Removal

Keep the site and work area free from accumulations of dust, waste materials, or rubbish caused by Contractor operations and free from any flammable materials or other sources of fire hazard. Remove all waste materials and rubbish from and about the work site in strict accordance with the specifications and applicable codes and regulations.

3.8.3 Post-Remediation Inspection

Clean up all debris and dust in interior spaces outside the work area resulting from the Contractor's remediation work.

After all visible accumulations of material and debris are removed from the containment, provide the Contracting Officer a 24-hour notice for a final clearance visual inspection.

The Contracting Officer and Contractor's Industrial Hygienist must conduct a thorough

Attachment B visual inspection of the work area. If during this inspection any visible debris or microbial contamination are observed, the Contractor must re-clean the work area without additional cost to the Government.

3.8.3.1 Clearance

a. Clearance Criteria Clearance will be based on visual assessment (all visible mold removed, all visible dust removed, based on a "white glove" test) by Contracting Officer. "White glove" test will consist of wiping the surface with a clean cloth of color suitable to reveal expected type of dust. For most surfaces, a white cloth is suitable. For GWB dust, a dark cloth may be more appropriate.

b. Failed remediation areas will be recleaned at no additional cost to the Government and the AFUs kept in operation another 12-hours, followed by another visual assessment. Subsequent failures will follow the same routine until a pass condition is secured.

3.9 CLEAN-UP AND DISPOSAL

3.9.1 Disposal of Material

Dispose of contaminated bagged waste materials removed during this remediation as general construction debris. Follow all applicable local, State, and Federal requirements for the disposal of this material.

3.9.2 Material Packaging

Place waste, as waste is removed, into a disposal container promptly. Disposal containers must consist of at a minimum, two layers of clear 6 mil (IHFOM, CH 13, Sec. 3) polyethylene bags. Tape bags in a gooseneck fashion to form an airtight seal and label appropriately. Bag waste from vacuums equipped with HEPA filters in 6 mil (IHFOM, CH 13, Sec. 3) polyethylene bags.

3.9.3 Building Exit (Waste Disposal)

HEPA vacuum and damp wipe bags of contaminated waste material prior to removal from the building.. When possible pass the bags directly from the containment or airlock to the outside. Transport bags to a dumpster.

3.9.4 Hazardous Material

Should the Contractor encounter any hazardous materials, notify the Contracting Officer immediately for direction.

DIVISION 6

SECTION 06 10 00

ROUGH CARPENTRY

PART 1 - GENERAL

A. WORK INCLUDED: roof decking, structure wall and floor repair

B. Grading and Standards

1. All plywood shall conform to PS-1-74 and to the latest standards of the

American Plywood Association or Hardwood Plywood Institute. All plywood shall be certified by the appropriate grade trademark of the Association.

2. ALSC PS 20 (2015) American Softwood Lumber Standard

3. AWC NDS (2015) National Design Specifications (NDS) for Wood

Construction

4. AWC WFCM (2012) Wood Frame Construction Manual for One- and Two-

Family Dwellings

PART 2 - PRODUCTS

A. PLYWOOD Roof Sheathing shall be exterior type "C-D" EXT APA or better, as defined by the American Plywood Association. Thickness shall be the same as what is on the existing roof.

B. Floor Joists: Nominal 2 in x 8 in #2 Southern Yellow Pine or approved substitute.

C. Exterior wall sheathing: Southern Pine 23/32 in plywood or approved substitute

(no OSB, MDF or similar)

D. Exterior wall wrap: DuPont Tyvek or approved equivalent.

E. Nails ASTM F547, size and type best suited for purpose. For sheathing length of nails must be sufficient to extend 1 inch into supports. In general, 8-penny or larger nails must be used for nailing through 1 inch thick lumber and for toe nailing 2 inch thick lumber; 16-penny or larger nails must be used for nailing through 2 inch thick lumber. Nails used with treated lumber and sheathing must be hot-dipped galvanized in accordance with ASTM A153/A153M. Nailing must be in accordance with the recommended nailing schedule contained in AWC WFCM. Where detailed nailing requirements are not specified, nail size and spacing must be sufficient to develop an adequate strength for the connection.

The connection's strength must be verified against the nail capacity tables in AWC NDS. Reasonable judgment backed by experience must ensure that the designed connection will not cause the wood to split. If a load situation exceeds a reasonable limit for nails, a specialized connector must be used.

Attachment B

PART 3 - EXECUTION

A. General Requirements

1. Notify COR before removing any rotten or damaged roofing decking.

2. After getting approval from the CO or COR rotten or damaged decking can be removed and replaced.

B. Install with the grain of the outer plies or long dimension at right angles to supports. Stagger end joints and locate over the centerlines of supports. Allow 1/8 inch spacing at panel ends and edges. Nail panels with 8-penny common nails or 6-penny annular rings or screw-type nails spaced 6 inches at o.c. at supported edges and 12 inches o.c. at intermediate bearings. Do not use staples in roof sheathing. Where the support spacing exceeds the maximum span for an unsupported edge, provide adequate blocking, tongue-and-groove edges, or panel edge clips, in accordance with APA E30.

C. Patch wall after chimney removal with plywood and house wrap.

SECTION 06 20 00

FINISH CARPENTRY

A. This section covers all trim and related items.

B. Deliver wood products to the jobsite in an undamaged condition. Stack materials to ensure ventilation and drainage. Protect against dampness before and after delivery.

Store materials under cover in a well-ventilated enclosure and protect against extreme changes in temperature and humidity. Keep materials wrapped and separated from off-gassing materials (such as drying paints and adhesives). Do not use materials that have visible moisture or biological growth. Do not store products in building until wet trade materials are dry and humidity of the space is within wood manufacturer's tolerance limits for storage.

PART 2 – PRODUCTS

A. Provide yard and board lumber sizes in accordance with ALSC PS 20. Provide shaped lumber and millwork in the patterns matching the existing and in standard patterns of the association covering the species. Size references, unless otherwise specified, are nominal sizes. Provide actual sizes within manufacturing tolerances allowed by the applicable standard.

B. Plywood for Soffits: Provide plywood soffits in siding grade hardboard, 7/16-inch thick; plywood, APA L870, exterior type, Grade A-C plywood panel siding 24 inches on center maximum span with all edges supported.

C. Porch columns: Gilpin Windsor steel corner columns or approved equal matching the carport columns

D. Interior trim: match existing.

E. Provide species and grades for all fascia and trim, in accordance with AWPA U1.

Provide sizes to match existing Grade B or better or clear.

F. Exterior Treated and Untreated Finish Lumber and Trim: 4 inches Nominal or Less in Thickness: maximum moisture of 19 percent. Exterior Wood Siding: maximum moisture of 15 percent.

G. Use nails of a size and type best suited for each application and in accordance with

ASTM F547. Use hot-dipped galvanized or aluminum nails for exterior applications.

For siding, provide nails of sufficient length to extend 1-1/2 inches into supports, including wood sheathing over framing. Where nailing is impractical, provide screws of a size and type best suited for each application.

A. Provide shoulder joints in flat work. Reinforce backs of wide-faced miters with metal rings and waterproof glue. Unless otherwise indicated, provide fascia and other flat members ¾-inch thick minimum. Provide braced, blocked, and rigidly anchored cornices for support and protection of vertical joints.

B. Provide panels with edges at joints spaced in accordance with manufacturer's written instructions and with all edges backed by framing members. Nail panels 3/8 inch from edges at 6 inches on center and at intermediate supports at 12 inches on center. Provide soffits in largest practical size. Align joints of plywood over centerlines of supports. Back prime all concealed surfaces of exterior trim.

C. FASCIA AND EXTERIOR TRIM Construct, caulk, and machine sand exposed surfaces and edges to exclude water. In addition to nailing, glue joints as necessary for weather resistance. Evenly distribute end joints in built-up members. Provide fascia and other flat members in maximum practicable lengths. Braced, block, and rigidly anchor cornices for support and protection of vertical joints.

D. Attic access: Patch the hole in the bathroom for the current attic access with similar material to the bathroom ceiling. Finish the joints and paint the whole ceiling so the whole ceiling has a uniform appearance. Remove the attic fan in the hallway. Install a 3-1/2 inch wide moulding with mitered corners around the opening leaving 1 in into the opening to create a lip. Glue 4 inches of foam board insulation to finished sheetrock all cut to the size of the rough opening and supported by the moulding lip.

E. Crawl space vent: insert existing removed crawl space vent on west side of the foundation and grout in place.

F. Crawl space access: Construct a crawl space access door frame with pressure treated 2 x 4s to match the opening in the foundation. Install an Acudor Universal Flush Access Door or approved equivalent.