Attachment_2_Specs_Gambrill_House_Rev_1_(07-10-2024)_0001.pdf

Gambrill House Three Porches & Balcony Preservation: Project Specifications

Revision 1 dated 07/10/2024

Cover sheet

SUBMITTALS

01330-1

SECTION 01330 SUBMITTALS

PART 1 – GENERAL

1.1 DESCRIPTION

A. The work of this section consists of submittal requirements before and during construction.

1.2 RELATED REQUIREMENTS

A. Section 01770, “Project Closeout”.

1.3 SUBMITTAL AND APPROVAL PROCEDURES

A. All material submittals shall be transmitted using National Park Service form CM-16, dated 4/00. (A copy of the form is included at the end of this section.) No action will be taken on a material submittal item unless accompanied by the transmittal form.

B. Submittals will be a topic of the Pre-Construction Meeting. The terms and conditions of the contract require you to satisfy the requirements of the individual specification sections regardless of what is discussed. Forward submittals to Contracting Officer at least fourteen

(14) days before need for approval. Unless a different number is specified, submit four (4) copies of each shop drawing, four (4) copies of manufacturer's catalog sheets (cut sheets), four (4) specimens of each sample, and four (4) copies of all other submittals requested.

1. Shop Drawings: Include the following information with each copy of shop drawings:

a) Date.

b) Date of revisions (when applicable).

c) Contractor's certification that shop drawing has been checked for compliance with contract documents.

d) Details of fabrication, assembly and erection including connections and engagement to contiguous work.

e) Materials used.

f) All required dimensions.

g) The term "by others" shall not be used. All work to be performed by others shall be identified by Contractor or subcontractor name, discipline, or trade.

2. Samples and Mock-Ups: Submit full-size, fully fabricated Samples and Mock-ups cured and finished, as specified, and physically identical with the material or product proposed. Samples include partial sections of manufactured or fabricated components, cuts or containers of materials, color range sets, and swatches showing color, texture, and pattern.

a) Mount or display samples and Mock-ups in the manner to facilitate review of qualities indicated. Prepare Samples to match NPS’ sample. Include the following:

1) Specification Section numbers and reference.

2) Generic description of the Sample or Mock-up.

3) Sample or Mock-up source.

4) Product name or name of the manufacturer.

5) Compliance with recognized standards.

6) Availability and delivery time.

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b) Submit Samples and Mock-ups for review of size, kind, color, pattern, and texture. Submit samples for a final check of these characteristics with other elements and comparison of these characteristics between the final submittal and the actual component as delivered and installed.

1) Where variation in color, pattern, texture, or other characteristic is inherent in the material or product represented, submit at least 3 multiple units that show approximate limits of the variations.

2) Samples and Mock-ups shall illustrate workmanship, fabrication techniques, and details of assemble, connections, operation, and similar construction characteristics.

3) On the transmittal, indicate special requests regarding disposition of Sample submittals. Samples not incorporated into the Work, or otherwise designated as National Park Service property, are the property of the Contractor and shall be removed form the site prior to substantial completion.

c) Maintain sets of Samples and Mock-ups, as returned at the Project Site, for quality comparisons throughout the course of construction.

3. Manufacturers' Catalog Sheets: Submit only pertinent pages; mark each copy of standard printed data to identify specific products proposed for use.

4. Manufacturer's Installation Instructions: When contract documents require compliance with manufacturer's printed instructions, provide one complete set of instructions for Contracting Officer and keep another complete set of instructions at the project site until substantial completion.

C. Contracting Officer reserves the right to require submittals in addition to those called for in individual sections. If the contractor intends on supplying materials that differ from the salient characteristics specified in the individual sections, than a submittal will be required.

D. Approved Equals:

1. For each item proposed as an "approved equal," submit supporting data, including:

a) Drawings and samples as appropriate.

b) Comparison of the characteristics of the proposed item with that specified.

c) Changes required in other elements of the work because of the substitution.

d) Name, address, and telephone number of vendor.

e) Manufacturer's literature regarding installation, operation, and maintenance, including schematics for electrical and hydraulic systems, lubrication requirements, and parts lists. Describe availability of maintenance service, and state source of replacement materials.

2. A request for approval constitutes a representation that Contractor:

a) Has investigated the proposed item and determined that it is equal or superior in all respects to that specified.

b) Will provide the same warranties for the proposed item as for the item specified.

c) Has determined that the proposed item is compatible with interfacing items.

d) Will coordinate the installation of an approved item and make all changes required in other elements of the work because of the substitution.

e) Waives all claims for additional expenses that may be incurred as a result of the substitution.

3. Construction Materials: The Contractor is encouraged to submit for approval products made out of recycled or environmentally responsible material. Every effort will be made by the National Park Service to approve these materials.

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E. Coordinate all submittals and review them for legibility, accuracy, completeness, and compliance with contract requirements. Forward submittals that are related to or affect one another as a package to facilitate coordinated review. Each transmittal shall contain only data specific to that individual submittal.

F. Documents required in division 1 are to be delivered under separate cover letter. Do not use the

CM-16 Transmittal form for these documents.

G. Submittal Identification:

1. Identification shall include the park name-package number, project title, contract number, and transmittal number.

2. All sets of shop drawings, manufacturer's catalog sheets, samples, and other documents submitted to the Contracting Officer must have the identification information on the submittal. If the material is bound it will not be necessary to identify every page, but the cover page shall be clearly identified.

3. Identification information shall be applied to the bottom right margin on each page.

Identification information on samples shall be applied to the most readily visible area on the sample or on tags attached to sample.

H. Submittal Numbering:

1. Number each submittal consecutively.

2. For re-submittals use the original submittal number, plus a letter suffix beginning with A.

3. Additional re-submittals of the same item shall contain the original number with the next consecutive letter.

I. Contracting Officer's Review:

1. Submittals will be returned disapproved without technical review if identification information is missing, not filled in, or if placed on the back of the submittal; an incorrect number or format of submittals is provided; the transmittal form is incorrectly filled out; submittals are not coordinated; or submittals do not show evidence of Contractor's approval.

2. Any work done or orders for materials or services placed before approval shall be at the Contractor's own risk.

3. After reviewing submittals, the Contracting Officer will return one copy of form CM-16 and one copy of applicable (marked up) submittal sheets to the Contractor. Shop drawing review notations will be returned on the reproducible original shop drawing. All other submitted items will be retained. The Contractor is responsible for producing additional copies for his/her own use.

4. The returned submittal will be marked in one of three ways as defined below:

a) APPROVED: Acceptable with no corrections.

b) APPROVED WITH NOTATIONS: Minor corrections or clarifications required. All comments are clear and no further review is required. The Contractor shall address all review comments when proceeding with the work.

c) DISAPPROVED - RESUBMIT: Rejected as not in accordance with the contract or as requiring major corrections or clarifications. The Contracting Officer will identify the reasons for disapproval. The Contractor shall revise and resubmit with changes clearly identified.

PART 2 – PRODUCTS

NOT USED

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PART 3 – EXECUTION

NOT USED

END OF SECTION 01330

02090 - 1

REMOVAL AND DISPOSAL OF

LEAD BASED PAINT

REMOVAL AND DISPOSAL

SECTION 02090 OF LEAD-BASED PAINT

PART 1: GENERAL

1 .1 DESCRIPTION

A. Lead-based paint is presumed to be present at the Gambrill House. Work includes removal of deteriorated, alligatoring, flaking, peeling, and chipping paint sufficiently to produce bare surfaces on all work surfaces in preparation for painting. Verify with COR level of abatement required prior to starting any work.

B. The work of this section requires the Contractor to develop and implement a written Work Compliance Program describing the operations involving the handling of lead-based paint and the demolition, construction and repair of structures where lead is present. The written Work Compliance Program shall include engineering controls, work practice controls, and any administrative controls to reduce and maintain worker exposure to lead, at or below the permissible exposure limit (PEL). Work also includes the disposal of any lead-based paint or materials containing lead paint generated by the work.

C. Contractor has full responsibility for protecting the environment, the health of workers, park staff, and the public from spent material resulting from removal and demolition operations. The Contractor is responsible for meeting or exceeding the minimum requirements called for in these specifications and in applicable governmental regulations.

D. Means and methods to remove lead containing paint, materials with lead containing paint, protection of adjacent areas from contamination and assurance of compliance with all regulations are solely the responsibility of the Contractor.

1 .2 RELATED WORK

A. Section 02226 - Minor Demolition of Historic Fabric.

B. Section 09901 - Painting.

1 .3 DEFINITIONS

A. Competent Person (CP): One who is capable of identifying existing and predictable lead hazards in the surroundings or working conditions and who has authorization to take prompt corrective measures to eliminate them. One who has required certification and training.

B. Deteriorated Lead-Based Paint: Paint that is peeling, chipping, blistering, flaking, worn, chalking, alligatoring, cracking, or otherwise becoming separated from the substrate; or lead-based paint on a damaged or deteriorated surface.

C. Eight-Hour Time Weighted Average (TWA): Airborne concentration of lead averaged over an 8 hour workday to which an employee is exposed.

D. Engineering Controls: Methods to keep hazardous air levels down so that a minimum reliance is placed on respirators to protect workers, such as the use of wet methods, HEPA vacuums, prompt clean-up.

E. High Efficiency Particulate Air (HEPA) Filter Equipment: Vacuuming equipment with a UL 586 filter system capable of collecting and retaining lead-contaminated paint dust. A filter capable of removing particles of 0.3 micron or larger in size from air at 99.97 percent or greater efficiency.

02090 - 2

F. Lead-Based Paint: The lead content of any paint, varnish, shellac, or other coating shall be considered hazardous when it is equal to or greater than 0.5% by weight or 1.0 mg/cm2 (milligrams per square centimeter).

G. Lead-Based Paint Hazard: A condition in which exposure to lead from lead-contaminated dust, lead-contaminated soil, or from lead-based paint that has deteriorated or is contained on accessible, friction, or impact surfaces would result in adverse human health effects, as established by the EPA Administrator under Title IV of the Toxic Substances Control Act.

H. Permissible Exposure Limit (PEL): The Employer shall assure that no employee is exposed to lead at concentrations greater than fifty (50) micrograms of lead per cubic meter of air averaged over an 8-hour workday (TWA).

I. Regulated Area: Where the possibility of generating airborne lead dust during construction or operation and maintenance activities, the area shall be demarcated as a regulated area. Only authorized personnel may enter the area. All persons entering a regulated area must wear a NIOSH approved respirator equipped with high efficiency particulate air filters unless personal air monitoring indicated the lead levels are below and will remain below the PEL.

1 .4 CODES AND REGULATIONS

A. In addition to the requirements of this specification, comply with those applicable laws, ordinances, criteria, rules, and regulations of Federal, State, and Local authorities regarding removing, handling, storing, transporting, and disposing of lead waste materials. Where documents vary, the most stringent requirements shall apply.

B. The publications listed below form a part of this specification. All work shall conform to the following regulations/guidelines. Submit matters of interpretation of standards to appropriate administrative agencies for resolution before starting the work.

1. Maryland’s Department of the Environment, Code of Maryland Annotated Regulations (COMAR) Title 26, Subtitle 02, Chapter 07: Procedures For Abating Lead Containing Substances From Buildings, latest edition (contact phone number: 410-631-3859).

2. Department of Housing and Urban Development (HUD) Guidelines for the Evaluation and Control of Lead- Based Paint Hazards in Housing, June 1995 or latest edition.

3. Codes of Federal Regulations:

a. 29 CFR 1926.62 Lead

b. 29 CFR 1910.134 Respiratory Protection

c. 29 CFR 1910.1200 Hazard Communication

d. 29 CFR 1926.55 Gases, Vapors, Fumes, Dust, and Mists

e. 40 CFR 260 Hazardous Waste Management Systems

f. 40 CFR 261 Identification and Listing of Hazardous Waste

g. 40 CFR 262 Generators of Hazardous Waste

h. 40 CFR 263 Transporters of Hazardous Waste

i. 49 CFR 178 Shipping Container Specification

4. Underwriters Laboratories (UL): UL 586 High-efficiency Particulate Air (HEPA) Filter Unit.

5. Occupational Safety and Health Administration (OSHA 3142), Lead in Construction regulations, latest edition.

6. National Institute of Occupational Safety and Health (NIOSH).

7. American National Standards Institute (ANSI): ANSI Z88.2 Respiratory Protection (1992).

1 .5 SUBMITTALS AND REQUIREMENTS

02090 - 3

A. As specified in Section 01330.

B. Exposure Assessment: Perform and document an employee exposure assessment as required by 29 CFR

1926.62. Submit results for approval to COR.

C. The Contractor, COR, and CP shall meet prior to beginning work to discuss in Work Compliance Program.

Once approved by the COR, the plan will be enforced as if an addition to the specification. The programs must be approved by the COR in writing prior to starting any lead work.

D. Work Compliance Program: Develop and implement a written Work Compliance Program prior to the commencement of any work where worker exposure to lead may reach the PEL as an 8-hour TWA.

1. Submit the job-specific, Methods of Work Compliance Program detailing engineering controls, work procedures, including any administrative controls, safety precautions and removal techniques to be used in the abatement/removal of lead-based paint or materials where lead is present, to the extent feasible to reduce worker exposure to lead. Where such controls are feasible, but not adequate to reduce exposures below the PEL, they must be used nonetheless to reduce exposure to the lowest level that can be accomplished by these means and then supplemented with appropriate respiratory protection.

2. The program shall include elements identified in 29 CFR 1926.62 (e)(2) and specify the means that will be used to achieve compliance. Provide a description of operations in which lead is emitted, detail type of equipment and tools, type of material involved, employee job responsibilities, operating procedures and maintenance practices.

3. The program shall detail housekeeping and hygiene practices, the type of protective clothing, equipment and respirators to be used. The also include a sketch showing the location, size, and details of the lead control areas, change areas, and the shower/wash area. Detail interface of trades, sequencing of lead related work, collected wastewater and lead paint debris disposal plan, and a detailed description of the method of containment of the operation to ensure that airborne lead concentrations of 30 micrograms per cubic meter of air are not exceeded in the regulated area.

4. Include air sampling, frequency, duration of sampling and qualifications of air monitoring personnel.

E. Laboratory Testing Qualifications:

1. Submit name, address and telephone number of the testing laboratory selected to perform the monitoring, testing and reporting of airborne concentrations of lead. Provide proper documentation that persons performing the analysis have been judged proficient by successful participation within the last year in the NIOSH Proficiency Analytical Testing (PAT) Program. The laboratory shall be accredited by the American Industrial Hygiene Association (AIHA). Provide AIHA documentation along with date of accreditation/reaccreditation.

2. Submit monitoring results to COR within 24 hours of test, signed by the testing laboratory employee performing the air monitoring and the employee that analyzed the sample.

F. Rental Equipment Notification: If rental equipment is to be used during lead-based paint handling and disposal, notify rental agency in writing concerning the intended use of the equipment. Furnish a copy of written notification, signed by the rental company, to COR.

G. Licensing and Employee Training: All personnel involved in the project are required to be trained and licensed in the state in which the project is to take place.

1. Contractor must be OSHA certified to perform work specified herein. Provide evidence of certification.

2. Submit employee training certification signed and dated by both the approved lead paint training facility and each employee stating the employee has received required training.

H. Respiratory Protection Program:

02090 - 4

1. Establish and implement a respiratory protection program as required by ANSI Z88.2, 29 CFR 1910.134, 29 CFR 1926.62 and 29 CFR 1926.55. Submit a written program detailing operating procedures and methods of compliance with regulatory statutes. Include a detailed equipment list.

2. Contractor shall perform a worker exposure assessment as required by 29 CFR 1926.62 paragraph (d) and determines actual worker exposure. The Contractor shall provide to workers performing the work, protection as detailed in the approved Work Compliance Program and Respiratory Protection Program.

I. Hazardous Waste Management Plan: Submit plan outlining methods and schedule for waste containment, removal, disposal and final clean-up procedures. The plan shall comply with applicable Federal, State and Local hazardous waste regulations and shall include:

1. Identification of hazardous wastes associated with the work.

2. Estimated quantities of waste to be generated and disposed of.

3. Names and qualifications of each Contractor that will be transporting, storing, treating, and disposing of the waste generated.

4. Written evidence that the disposal facility is approved for lead disposal by the United States Environmental

Protection Agency (EPA), state and local regulatory agencies. Include the facility location and a 24-hour point of contact.

5. Waste shipment records and hazardous waste manifest signed and dated by an agent of the EPA licensed hazardous waste disposal facility, certifying the amount of lead materials delivered to the landfill, within 7 days after delivery. Submit Certificate of Disposal.

6. Provide spill prevention, containment, and cleanup contingency plans and equipment to be implemented if necessary.

J. Permits and Notification:

1. Obtain necessary permits in conjunction with lead removal, hauling, and disposal, and furnish timely notification of such actions as required by Federal, State, regional, and local authorities. Notify the Regional Office of the EPA and the District of Columbia Lead Poisoning and Prevention Program prior to the start of work.

2. Furnish two copies of the EPA and local hazardous waste permits, include the EPA identification numbers.

3. Notify the COR and appropriate government agencies in writing prior to the start of lead work as indicated in applicable laws, ordinances, criteria, rules, and regulations.

K. Hazard Communication: Adhere to all parts of 29 CFR 1926.59 and provide the COR with copies of the Material Safety Data Sheets (MSDS) and Catalog Data for all materials, clean products, tools and equipment proposed for use in Contractor’s Work Compliance Program.

L. Medical Requirements:

1. Provide a written certification of medical examinations signed by a licensed physician indicating that each worker and supervisor has met or exceeded all of the medical prerequisites specified herein and in 29 CFR

1926.62 and 29 CFR 1910.134.

2. Submit test result of blood lead level screening for each worker prior to start of work and again at the end of the lead abatement/removal work.

M. References: Submit references demonstrating previous success of Lead Abatement Contractor (LAC) in abating similar types of structures (completed for over a year) and in utilizing techniques allowed in these specifications and proposed for use by Contractor on this job. Include names and phone numbers of owners, architects, or maintenance personnel having knowledge of and are satisfied with the performance of the LAC.

1 .6 PROJECT CONDITIONS

02090 - 5

A. Lead-based paint shall not be removed from exterior surfaces on days wind speed exceeds 15 MPH.

1 .7 SCHEDULING

A. Coordinate work schedule with COR and park personnel.

PART 2: PRODUCTS

2 .1 EQUIPMENT

A. Respirators, Protective Clothing, Tools and Equipment: Provide as required by 29 CFR 1926.62 and 29 CFR

1910.134 to perform the work.

2 .2 SIGNS AND LABELS

A. Sign and label format shall conform to 29 CFR 1926.62 of sufficient size to be clearly legible.

1. Provide warning signs at approaches to lead control area. Locate signs at such a distance that individuals may read the sign and take the necessary precautions. Signs shall warn about the lead hazard and prohibits eating and drinking in the area.

2. Provide labels and affix to all lead materials, scrap, waste, debris, and other products contaminated with lead.

2 .3 ENVIRONMENTAL PROTECTION AND CLEANING PRODUCTS

A. Contractor is responsible for supplying all material for proper environmental protection and clean-up of lead paint. Unless covered by more stringent requirements in regulations referenced above, materials include, but are not limited to, the following:

1. Polyethylene sheeting, 6 mil thick.

2. Duct tape, industrial grade.

3. Garden sprayers or misters.

4. Wet cleaning materials: mops, sponges, buckets, etc.

5. All-purpose cleaner.

6. Polyethylene bags, 6 mil thick.

7. HEPA vacuum

8. 55-gallon drums, corrosion resistant, Department of Transportation (DOT) approved.

PART 3: EXECUTION

3 .1 PROTECTION: GENERAL REQUIREMENTS

A. Perform lead related work in accordance with COMAR 26 and 29 CFR 1926.62 and as specified herein. Use work procedures as specified in the approved Work Compliance Program.

1. In order to minimize the amount of lead dust generated prior to and during the scraping/surface preparation of any component, the component must be lightly misted with water.

2. Lead containing debris and dust shall be removed daily by spray misting of dry debris before sweeping.

B. The Contractor shall be represented on site by a competent person certified, trained, and capable of identifying existing and predictable lead hazards, who has authorization to take prompt corrective measure to eliminate them.

02090 - 6

C. Contractor shall protect the environment, workers, and public from spent material resulting from the lead paint removal and paint preparation operations. Depositing or dropping spent materials onto the ground below/around the structure will not be permitted. Before beginning any activity which may generate lead-containing dust or debris, use plastic sheeting and, as necessary, vertical shrouds to contain all visible debris within the work area.

D. Boundary Requirements: Provide physical boundaries around the regulated area by roping off the area. Refer to SECTION 2.2.

3 .2 PERSONAL PROTECTION

A. Workers shall wear and utilize protective clothing and equipment as required by 29 CFR 1926.62 and as outlined in the Contractor submitted and approved Respiratory Protection Program and Work Compliance Program.

B. There shall be no eating, drinking, smoking or applying of cosmetics in the regulated work area. Contractor shall provide a clean space, separated from the lead control area, for these activities.

C. Personnel of other trades not engaged in the removal of lead-based paint or materials containing lead shall not be exposed at any time to airborne concentrations of lead unless the personal protection and training provisions of this specifications are complied with the trade personnel.

D. Personnel Exiting Procedures: Whenever personnel exit the lead control areas, they shall perform exiting procedures according to 29 CFR 1926.62 and as outlined in the approved Work Compliance Program.

3 .3 AIR MONITORING

A. Monitoring of airborne concentrations of lead shall be in accordance with 29 CFR 1926.62 and as specified herein. Submit results of air monitoring to the COR within three working days after the air samples are taken.

Notify COR immediately of exposure to lead in excess of 30 mg/m3.

3 .4 PREPARATION

A. Sample Areas: Prior to commencement of work, workmanship samples on each typical surface or component must be approved by the COR to serve as standard of comparison for approval of subsequent work.

B. Verify with COR level of abatement required prior to starting any work.

3 .5 PAINT REMOVAL

A. Use gentlest method possible to remove lead-based paint or to clean surfaces. Target paint removal in areas where deteriorated lead-based paint is present.

B. Remove all deteriorated, alligatoring, flaking, peeling, and chipping paint sufficiently to produce bare surfaces on all work surfaces to remain, in preparation to receive new prime coat.

C. Acceptable Paint Removal Techniques: Contractor shall use procedures and equipment required to limit occupational and environmental exposure to lead. The following methods/combinations of methods are acceptable for removal of lead-based paint:

1. Hand sanding and scraping with mist for dust control to remove loose and flaking paint to feather edges in preparation for applying coat of paint.

2. HEPA equipped power sanders.

3. Flameless heat gun, heat grid, etc., with maximum setting of 1,100 degrees F to separate paint from substrate.

02090 - 7

4. Peel-away chemicals.

5. Non-methylene chloride based chemical paint stripper in paste or gel form, solvent or caustic, to be used according to manufacturer’s instructions. Surfaces where caustic strippers have been used must be carefully neutralized and thoroughly cleaned of all evidence of alkali neutralizer, lead residue, and cleaning solution, before COR will give approval for painting.

a. Glacial acetic acid (mixed 50/50 with water) should be used for neutralization of previous caustics in according to manufacturer’s instructions.

D. Unacceptable Paint Removal Techniques: The following methods for removing lead-based paint are prohibited under the work of this contract:

1. Open flame burning.

2. Dry sanding and scraping.

3. Sandblasting or other open abrasive blasting.

4. Uncontained water blasting

5. Chemical strippers containing methylene chloride.

6. Chemical dipping of materials.

3 .6 CLEANING OF WORK AREA

A. Cleanup at the end of each workday. All bulk debris shall be bagged in 6 mil plastic bags or wrapped in 6 mil plastic, sealed, labeled and disposed of in a legal manner off of Park Property.

B. At the end of the project, the work area shall be cleaned of all visible dust and debris.

1. Collect all lead waste including, but not limited to, paint chips, sealing tape, plastic sheeting, filters, mop heads, stripper and neutralizer waste, and disposable clothing. Contain, store, seal and label lead-contaminated waste material according to regulations specified herein.

2. HEPA vacuum clean as required, sponge wash all surfaces in the work area. Use a solution containing at least 1 ounce of 5 % TSP to each gallon of water to wash all surfaces. Use a fresh bucket of phosphate wash per 100 SF. All liquid waste generated during this process shall be collected, tested and disposed of accordingly. After washing, HEPA vacuum clean all surfaces again after they have dried until no visible residue remains.

3. Dry sweeping and other methods which generate substantial levels of airborne dust may not be used for cleaning.

C. Prior to any repainting, the COR shall visually inspect the surfaces for signs of dust or debris. Only when the COR finds that there are no significant lead residues will approval for painting/whitewashing be given.

3 .7 TESTING OF LEAD WASTE

A. Test all liquid waste generated for total lead content. Any such waste with a lead content greater than or equal to 5 (five) parts per million (ppm) shall be considered hazardous and treated accordingly. Submit results to

COR.

B. A representative sample of each type of solid waste shall be taken and analyzed by a Toxic Characteristic Leaching Procedure Test (TCLP) to determine if the waste is hazardous. Any waste which results in a lead content in the leachate of greater than or equal to 5 (five) ppm shall be considered hazardous and treated accordingly. Results shall be submitted to COR.

3 .8 DISPOSAL OF WASTE

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A. Non-hazardous Waste: Place all waste and debris in 6 mil thick plastic bags and seal the bags. Large pieces of debris must be wrapped in 6 mil plastic and sealed. Place solvent and caustic residues in corrosion-resistant drums. Immediately prior to being taken out of the work area, the container/plastic shall be re-bagged or wrapped, or wet wiped to remove residual contamination. All lead contaminated waste, even if non-hazardous, shall be transported in covered vehicles to an appropriate landfill. Dispose of non-hazardous liquid waste via the sanitary sewer system, not by pouring it onto the ground or down a storm drain. Solid waste which is not classified as hazardous waste shall be secured at the work site and transported to a permitted lined sanitary landfill within 48 hours of completion of the project.

B. Hazardous Waste:

1. Handle, store, transport and dispose of lead contaminated waste in accordance with all applicable Local, State, and Federal regulations. All waste materials shall become the property of the Contractor and shall be disposed of off Government property. Dispose of in an approved and licensed hazardous waste landfill.

Comply with land disposal restriction notification requirements as required by 40 CFR 268.

2. Place all liquid or solid hazardous wastes in DOT-approved containers. Clearly label the containers with the words “Hazardous Waste” and date once full. Keep containers closed except when they are being filled or emptied. Inspect the container for leaks or corrosion every week.

3. Provide COR with one copy of transport manifest for material to be disposed of when material is ready to be loaded and transported to approved disposal facility in accordance with 40 CFR 262. Material shall not be removed from the job site until COR approval is given.

4. Provide COR with Certificate of Disposal and manifest signed by the agent accepting the material at the approved disposal facility upon its delivery. Properly executed manifest shall be received by the COR no later than 7 calendar days after material is transported from the job site.

3 .9 RESTORATION

A. Remove all equipment, temporary protection and barriers associated with lead removal work. Verify all debris and rubbish has been removed and legally disposed of.

PART 4: MEASUREMENT AND PAYMENT – NOT USED

END OF SECTION

02226-1

MINOR DEMOLITION FOR HISTORIC FABRIC

SECTION 02226 MINOR DEMOLITION FOR HISTORIC FABRIC

A. The work of this section consists of demolition and removal work. Work includes removing and storing salvageable items. All unsalvageable material shall be removed and disposed of properly off of Park property.

Work also includes surface preparation for whitewashing and painting. Provide all shoring and other stabilization necessary to support the existing roof and other portions of the structure to remain.

1 .2 RELATED WORK

A. Section 02090 - Removal and Disposal of Lead-Based Paint.

1 .3 DEFINATIONS

A. Deteriorated Paint: Paint that is peeling, chipping, blistering, flaking, worn, chalking, alligatoring, cracking, or otherwise becoming separated from the substrate; or paint on a damaged or deteriorated surface.

B. Lead-Based Paint: The lead content of any paint, varnish, shellac, or other coating shall be considered hazardous when it is more than 0.5% by weight or 1.0 mg/cm2 (milligrams per square centimeter).

C. Stabilize Paint: The removal of all deteriorated paint to the next sound paint layer using the “gentlest technique possible” in order to produce sound paintable surfaces.

1 .4 SUBMITTALS

A. As specified in Section 01330.

B. Submit schedule showing sequence of work and methods of removal work. Include proposed methods of building protection. Submit method for protecting ground area from demolition and construction debris.

1 .5 PROJECT CONDITIONS

A. General:

1. Keep dust and dirt pollution to a minimum.

2. Ensure safety of persons in demolition area.

3. Keep area clear of hazardous substances and debris.

4. Maintain access to exits and ladders at all times.

5. Clean masonry surfaces only when air temperature is 40 degrees F (4 degrees C) and above and will remain so until masonry has dried out, but for not less than seven days after completion of cleaning.

B. Do not proceed with surface preparation for coating application until conditions are suitable. Report all conditions that may potentially affect proper application.

C. Hazardous Materials: It is presumed that the extant exterior paint contains lead – no testing has been performed. All work involving removal of lead-based paint or materials with lead-based paint shall comply with procedures and safety requirements outlined in Section 02090.

1 .6 CONTROLS

02226-2

A. Comply with NFPA Code 241-1989, “ Building Construction and Demolition Operations,” and with safety requirements for demolition, ANSI A10.6-83 Series standards for “Safety Requirements for Construction and Demolition.”

PART 2: PRODUCTS

2 .1 RESTORATION PRODUCTS

A. Wood Fillers: a sandable material suspended in a hardening resin that will soak in and bod to the wood fibers. It should be used to fill imperfections in the wood surface prior to priming.

B. Epoxy’s: used for various purposes and applications such as adhesive bonding, fairing, gap filling, and filleting.

C. Glues: For repairing and bonding pieces together, should be a waterproof glue for this exterior application.

PART 3: EXECUTION

3 .1 PREPARATION

A. Take every precaution to prevent damage to existing structures and surrounding areas. Provide temporary weather protection to prevent damage to structure and interior area.

1. Provide temporary closures for all openings made in exterior roofs.

2. Tightly cover all openings in order to avoid water penetrating the buildings facade when cleaning. Any damage to the structure, interior or exterior of the building resulting form the Contractor’s operation shall be repaired to its original condition as directed by the COR, at no additional cost to the Government.

3. Protect building surfaces against damage from exposure to cleaning products.

4. Provide temporary protection in openings where window sash and doors are removed until permanent louvers and shutters are installed.

B. Protect ground around and adjacent to contract work area, ensuring that no construction debris, including but not limited to, paint, nails, staples, wood debris, roofing materials, etc., remains and gets embedded within the contract area. Depositing or dropping spent materials onto the ground below/around the structure will not be permitted.

C. VERIFY WITH COR LEVEL OF PAINT REMOVAL REQUIRED ON EACH TYPE OF MATERIAL

PRIOR TO STARTING ANY WORK.

3 .2 GENERAL REMOVAL

A. Carefully remove or cut fabric in presence of COR. Should accidental damage occur, promptly repair damaged area to the satisfaction of the COR at not additional cost to the Government. No flame cutting or vibrating equipment will be permitted.

B. As previously inaccessible areas are exposed, it may be necessary to halt work temporarily for architectural or archeological investigation. When possible, Contractor shall work elsewhere on the project. Maintain an artifact storage area for objects to be forwarded to the Park’s archival records.

C. Using approved methods, begin at top of wall and work down.

3 .3 NON LEAD-BASED PAINT REMOVAL

02226-3

A. Remove hazardous materials according to cited regulations and guidelines, and Section 02090.

B. Target paint removal in areas where deteriorated paint is present. Stabilize non lead-based paint by removing deteriorated paint to the next sound paint layer using the gentlest technique possible in order to produce sound paintable surfaces. Determine methods of removal in the presence of the COR by experimenting on portions of

02226-4 existing walls in approved inconspicuous area. Remove paint using gentlest specified removal techniques until the COR determines the safest and most satisfactory techniques or combination of techniques.

C. Bare wood should be primed within 48 hours. Prior to any repainting, the COR shall visually inspect all surfaces. Only when the COR finds that there are no significant paint residues will approval for painting/whitewashing be given.

D. Acceptable Non Lead-Based Paint Removal Techniques:

1. Hand sanding and scraping to remove loose and flaking paint to feather edges in preparation for applying coat of paint.

2. Low-pressure water wash: Garden hose or hand pump sprayer. Spray as directed with fine mist. Use filter on hose to obtain preferred degree of misting. Spray with 120-degree F maximum water, beginning with low pressure 100 psi and increasing as necessary, not exceeding 400 psi.

3. Power sanders.

4. Flameless heat gun, heat grid, etc., with maximum setting of 1,100 degrees Fahrenheit to separate paint from substrate.

5. Peel-away chemicals.

6. Non-methylene chloride based chemical paint stripper in paste or gel form, solvent or caustic, to be used according to manufacturer’s instructions. Surfaces where caustic strippers have been used must be carefully neutralized and thoroughly cleaned of all evidence of alkali neutralizer, lead residue, and TSP cleaning solution, before COR will give approval for painting. Glacial acetic acid (mixed 50/50 with water) should be used for neutralization of previous caustics in according to manufacturer’s instructions.

E. Unacceptable Paint Removal Techniques: The following methods for removing paint are prohibited under the work of this contract:

1. Open flame burning.

2. Sandblasting or other open abrasive blasting.

3. Uncontained water blasting

4. Chemical strippers containing methylene chloride.

5. Chemical dipping of materials.

3 .4 CLEANING TECHNIQUES

A. Determine methods of cleaning in the presence of the COR by experimenting on portions of existing walls in approved concealed area. Clean using gentlest techniques possible until the COR determines the safest and most satisfactory techniques or combination of techniques to produce sound surfaces for coating application.

Use water methods to soften dirt and rinse deposits from surfaces. (Do not saturate surfaces.)

B. Proceed with cleaning in an orderly manner working from top to bottom of each section width and from one end to the other. Use only those cleaning methods approved. Perform cleaning indicated in a manner that results in uniform coverage of all surfaces, including corners, moldings and interstices, and that produces an even effect without streaking or damaging masonry surfaces. Thoroughly rinse off any cleaning detergent residue and soil.

C. Remove any plant growth by completely removing the plant and moss growth from all surfaces. Obtain approval from COR prior to removal of any plant growth.

D. Acceptable Cleaning Techniques:

02226-5

1. Low-pressure water wash: Garden hose or hand pump sprayer. Spray as directed with fine mist. Use filter on hose to obtain preferred degree of misting. Spray with 120-degree F maximum water, beginning with low pressure 100 psi and increasing as necessary, not exceeding 400 psi.

2. Hand Scrubbing: Wet area to be cleaned. Scrub with a nonmetallic, soft natural bristle brush, using water that may have small amount of detergent added. Rinse thoroughly.

3. Mild non-ionic detergent with water. Brush scrub areas of more persistent grime.

E. Unacceptable Cleaning Techniques:

1. High-pressure water wash; water-blasting above 400 psi.

2. Mechanical Cleaning: abrasive blasting and grinders.

3. Chemical cleaners, such as products containing acid or alkali.

3 .5 REMOVAL WORK

A. Roofing

1. Carefully remove all existing wood shingle roofing down to existing sheathing boards. Provide weather protection until the finished roof is installed.

2. Inspect roof structure for damaged and/or deteriorated areas. Remove all deteriorated and rotten sheathing boards. Sister sagging or damaged wood structural members. If large quantities of lath or sheathing boards must be removed and replaced, the work shall be done in sections to avoid possible shifting or collapse of the roof structure. See Section 06100.

3. Remove chimney flashing and any flashing at ridge.

4. Remove or ‘drive home’ any projecting nails in sheathing and re-nail loose boards and where nails have been removed.

3 .6 CLEAN-UP OF WORK AREA

A. Repair and clean adjacent surfaces damaged or soiled by demolition work.

B. Thoroughly vacuum/sweep off sheathing to remove debris.

C. Cleanup at the end of each workday.

D. Non-hazardous Waste: Keep non-hazardous trash and debris in a dumpster, in area as specified by the COR, or other approved container, or remove daily from the site. Legally dispose of rubbish and debris off of Park Property as specified in Section 01010. Deposit all lead waste in accordance with Section 02090.

06100-1

CARPENTRY

SECTION 06100 CARPENTRY

A. The work of this section consists of furnishing and installing carpentry work, including but not limited to, the following:

1. Installation of new steps. Installation of new decking boards in those areas where existing decking boards were removed or missing due to damage or deterioration.

2. Repair of damaged / deteriorated wood surfaces in order to prepare surface for painting or as indicated on drawings.

1 .2 RELATED WORK

A. Section 02226 - Minor Demolition of Historic Fabric.

B. Section 07710 - Gutters and Downspouts.

1 .3 SUBMITTALS

A. As specified in Section 01330

B. A complete list of the materials, manufacturer, product name, product literature and the material safety data sheets for all items proposed for use. Submit to COR for approval prior to the start of work.

C. Treated Wood: Treating plant’s instructions for use, including storage, cutting, and finishing. Pressure preservative treatment: Treating plant’s certification of compliance with specified standards and stating process employed and preservative retention values.

D. Samples:

1. One of each type of fastener and metal accessory.

2. One of each size of lumber and trim showing species, grade and treatment if applicable.

E. Shop Drawings: Show framing connection details and fastener connections.

1 .4 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. Protect wood products against moisture and dimensional changes. Store materials a minimum of 6-inches above ground in area protected from weather. Protect with waterproof covering allowing adequate air circulation. Store materials where directed by the COR.

B. Protect preservative treated wood in accordance with AWPA M4-90.

06100-2

1 .5 QUALITY ASSURANCE

A. Identify lumber by official grade mark.

1. Lumber: Grade stamp containing, where applicable, symbol of grading agency, rules under which graded, mill number or name, grade of lumber, species or species grouping, and condition of seasoning. Grade stamps shall be on ends of boards.

2. Preservative Treated Lumber: Each piece shall be legibly marked with the AWPA Quality Mark.

3. Western Wood Products Association (WWPA).

B. Install carpentry work in accordance with IBC 2000.

C. Field Measure: Contractor shall be responsible for field measuring to verify sizes and dimensions.

1 .6 SCHEDULING

A. Coordinate with other trades so as not to hinder progress of work. Coordinate work schedule with COR and park personnel to minimize inconvenience to both staff and the public.

1 .7 WARRANTY

A. Provide manufacturer’s standard lifetime limited warranty for preservative treated wood.

1 .8 CLOSEOUT SUBMITTALS

A. Surplus Materials: Coordinate with COR quantities and types of surplus materials to be submitted.

PART 2: PRODUCTS

2 .1 LUMBER

A. All lumber shall be in accordance with Product Standard PS 20-70, as published by the Department of Commerce. Shall be free from warpage, stains, rot or other imperfections affecting durability, strength and appearance. Moisture content not to exceed 19 percent for yard lumber. Lumber two inches thick or less shall be kiln dried. For exposed work, hand selected.

B. Surfacing: S4S, surfaced four sides, unless otherwise specified.

C. Dimensions: All dimensions are nominal unless noted otherwise. Field verify all sizes prior to start of work.

D. Structural:

1. Match dimensions and species of extant members. All members in ground contact must be preservative treated per Section 2.2 Wood Treatment.

E. Non-Structural:

1. Misc. trim pieces – No. 1, clear Spanish Cedar or Sapele. Replacement porch decking and stair treads– No.

1, vertical grain Douglas Fir. Match existing size, profile

2. Stair Stringers: 2x12 and 2x10 nominal, hem fir, No. 2 and better grade, preservative treated, 19 percent maximum moisture content (S-Dry).

3. Wood Shims. Red Cedar.

06100-3

2 .2 WOOD TREATMENT

A. Wood Preservative Treatment: Arsenic and chromium free pressure-treated wood: ACQ (Alkaline Copper Quat) Type D Preserve produced in accordance with ACQ Preserve Standard ACQ-94 or approved equal.

B. Kiln dry lumber after treatment to a maximum moisture content of 19 percent.

2 .3 HARDWARE

A. Corrosion Resistant Fasteners and Connecting Hardware: Provide hot-dipped galvanized connecting hardware, nails, and fasteners when attaching to or penetrating preservative treated wood products. ASTM A276-95, Type 304 or 316, stainless steel nails and fasteners may also be used. Follow code and manufacturer fastening charts and guidelines for installation.

B. Miscellaneous Hardware: Provide nails, spikes, screws, bolts, nuts, washers, anchors, and similar items of type, size, and strength required to secure members rigidly in place.

PART 3: EXECUTION

3 .1 GENERAL INSTALLATION

A. Verify that surfaces to receive carpentry materials are prepared to exact grade and dimensions.

B. Obtain measurements and verify dimensions and details before proceeding with carpentry work. Sizes and spacing to match existing being replaced.

3 .2 CLEAN UP

A. Clean up debris and cuttings on a regular basis. Perform cleaning during installation of the work and upon completion of the work. Legally dispose of debris and other waste material off of park property.

07600-1

FLASHING AND SHEET METAL

SECTION 07600 FLASHING AND SHEET METAL

A. The work of this section includes, but is not limited to, the following:

1. Furnishing and installing new chimney flashing.

2. Furnishing and installing new ridge flashing.

3. Furnishing and installing new counter flashing.

4. Furnishing and installing sacrificial copper strips in the field of the new wood shingle roof per drawings.

1 .2 RELATED SECTIONS

A. Section 06100 Carpentry.

1 .3 SUBMITTALS

A. As specified in Section 01330.

B. Shop Drawings: Show methods of forming, jointing, nailing and securing metal to form units, including joint details and waterproof connections.

C. Samples:

1. One (1) - 12-inch by 12-inch samples of each sheet metal material. Show finish, color, and thickness.

2. Sealants: Manufacturer’s literature and color charts for selection.

3. Fasteners: Each type.

D. Manufacturer's Literature: Sheet metal manufacturer’s written instructions and recommendations for handling and installation.

E. Guarantee: upon completion of work provide 2 original copies of the guarantee for all work installed covered by this specification section. See Section 1.5 Guarantee.

1 .4 QUALITY ASSURANCE

A. Metal fabrication and installation shall be constructed according to the current recommendations of the National Roofing Contractors Association (NRCA), Sheet Metal and Air -Conditioning Contractors National Association (SMACNA) and the Copper Development Associations Copper in Architecture Installation Manual.

1 .5 GUARANTEE

A. Provide manufacturer’s warranty for Freedom Gray sheet metal.

B. The Contractor shall warrant the installation of the metal flashing to be watertight and free from leaks for a period of five years from the date of Substantial Completion. Any defects shall be repaired during the warranty period at no additional cost to the Government.

1 .6 PRODUCT DELIVERY AND PRECAUTIONS

07600-2

A. All products delivered shall be stored in a clean, dry location prior to installation.

B. Avoid damage, scars and abrasions to materials when handling.

PART 2: PRODUCTS

2 .1 SHEET METAL

A. Flat seam soldered…