ATTACHMENT_02_-_140P8625Q0074_-_SOW.pdf

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Golden Gate National Recreation Area Environmental Programs Office

Site Specific Metals-Contaminated Items Cleaning and Specification Package

Building T-1111, Fort Cronkhite

Statement of Work

RFQ 140P8625Q0074

PART ONE – GENERAL

1.0 PROJECT OVERVIEW, BACKGROUND and OBJECTIVES

1.1 Project Overview

Golden Gate National Recreation Area (GOGA), a unit of the National Park Service (NPS), issues this Statement of Work (SOW) and Request for Quotation (RFQ) for the cleaning of metals-contaminated items within, and the interior of, Building T-1111 at Fort Cronkhite in the GOGA in Sausalito, California.

1.2 Site Background

Building T-1111 has served as a storage and supply warehouse for National Park Service (NPS) employees for many years. It has recently been assessed and found to have lead-based paint on its exterior walls and stairs, etc. Building materials, paper products and equipment are stored at Building T-1111. Recent assessment activities have also shown that metals (chromium, lead and mercury) are present in dust inside the building.

1.3 Scope of Services

The Contractor shall provide a work plan and a health and safety plan (HASP) submittal and services necessary to conduct cleaning/work activities (i.e. sweeping, bagging items, wiping items, HEPA-vacuuming items, going up/down ladders) that would typically be used by contractors and/or NPS employees within Building T-1111. The Contractor shall clean high-priority non-porous items and high-touch interior building components for one 4-hour shift sufficient for the independent oversight Industrial Hygienist Consultant contractor (‘consultant’) to determine exposure concentrations (extrapolated to an 8-hour shift for each of the identified cleaning/work activities).

A separate NPS contractor will conduct air monitoring for metals for each of the typical cleaning/work tasks mentioned above. Analyses of the associated air cassettes will be done on a rush basis. If it is determined that the reported concentrations are below associated Action Levels (ALs) and/or Permissible Exposure Limits (PELs) for each of the identified activities, no further exposure assessment of the identified cleaning/work activities is required. For those activities that exceed the ALs or PELs the Contractor shall continue cleaning until a second verification round of assessment is completed. After the second cleaning round and assessment the NPS Contracting Officer, at their discretion, may elect to direct the Contractor to continue cleaning the building per the Option Item unit rates (both above and below ALs and PELs).

The Contractor shall provide the Contracting Officer (CO) a letter response to this Request for Quotation including an estimate of costs, supplies and services necessary to complete RFQ e2

Task Items listed in Section 2.0. This letter response to the RFQ establishes and documents that the Contractor understands task intent, elements, and schedule for completing each task item.

The Contractor shall state in the Proposal all Technical Assumptions underlying the Contractor’s submitted Technical Proposal and Cost Estimate.

Contractor shall use employees who have Hazardous Waste Operations and Emergency Response (HAZWOPER) training [per 29 CFR Part 1910.120(e)(4), with annual updates] and who are respirator-trained. The park requires a site and task-specific work and safety plan for NPS comment, review and final acceptance. The Contractor shall then conduct the planned cleaning/work activities in accordance with the approved work plan (and accepted HASP) following notice to proceed. Contractor shall provide a summary of the work activities/tasks and corresponding analytical data to the NPS (and associated contractors) for analysis and review.

1.4 Summary of Work

The final product per this Purchase Order is a complete summary report. The submittal shall include results of all worker exposure assessments, results, description of activities undertaken including major variations from the work plan and pictures documenting activities conducted.

It is the Contractor’s responsibility to visit the site and evaluate conditions/quantities prior to bidding and removal activities.

1.5 Site and Project-Specific Requirements

1.5.1 Building Entry

Building T-1111 has one main entry on its central-south side along Bunker Road. Entry shall be accomplished in coordination with NPS employees.

1.6 Existing Hazardous Materials Reports

The NPS has one environmental report conducted at Building T-1111:

• “Limited Asbestos Sampling, Paint Chip Sampling and Dust Wipe Sampling for Metals, Building T-1111, Bunker Road, Golden Gate National Recreation Area, Sausalito, California, United States National Park Service, 201 Fort Mason, San Francisco, California. Ninyo & Moore. April 2022. (ATTACHMENT 05).

The 2022 Ninyo and Moore report sampled Building T-1111 and found lead-in-dust concentrations at greater than the 10 micrograms per square foot (>10 µg/ft2) EPA/HUD Action Level for floors in all 19 wipe samples collected. Chromium and mercury were also detected above reporting limits.

• The NPS developed a photo package showing pictures of the buliding interior and stored contents. This photo package is representative but not complete or definitive.

(ATTACHMENT 06 – available upon request).

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1.7 Applicability

Since protection against lead exposure during the planned cleaning/remediation activities is expected to adequately protect against all contaminants potentially present, the Contractor will primarily comply with the requirements of the “Lead in Construction Standard”, Title 8 CCR, Section 1532.1 in all work areas.

1.8 Definitions

• “Contractor” refers to the contractor responsible for interior surface dust contamination cleaning/remediation.

• “Consultant” refers to an independent, third-party retained by the National Park Service (NPS) to provide consultation and supervision services for the cleaning/remediation oversight activities.

• High-efficiency particulate air (HEPA) filter refers to a filter capable of filtering out mono-dispersive particles of 0.3 microns or greater diameter from a body of air at 99.97 percent efficiency or greater.

• “Project” refers to any cleaning/remediation activity to be carried out as part of the activities described in this specification.

1.9 Compliance

The NPS is responsible for conducting National Environmental Policy Act compliance review and providing project stipulations. The Contractor is responsible for ensuring its work plan comports with all governing federal, state andlocal laws, regulations and decision rules and implementing project stipulations. The Contractor shall consider in project design all requirements necessary to conduct work and execute all work in accordance with accepted final work plan.

Contractor will follow substantive provision of all governing and remaining sustainability

Executive Orders when implementing this Statement of Work by including applicable sustainability language in the work plan.

PART TWO – PROCEDURES

2.0 TASKS

TASK A - Review Existing Documentation and Data, Site Visit and Project Management

1. Subtask 1: Review NPS-supplied documents Evaluate NPS-supplied documents (attachments). Determine and acquire additional information required to complete the planned cleaning/work activities.

2. Subtask 2: Site Visit e4

The Contractor will attend a site visit. Consider everything necessary to enter, work in and exit Building T-1111 and necessary to complete the planned cleaning/work activities. All visitors attending the site visit must have Hazwoper and Respiratory Protection training in order to conduct site walk.

3. Subtask 3: Project Management Contractor will attend a post-award meeting; lead conference calls sufficient to develop the work plan and HASP for submittal (as needed); comment resolutions meetings and convene meetings necessary to develop and facilitate site field work. Contractor will design, plan and execute all project tasks necessary to complete the planned cleaning/work activities.

Submittals: Meeting Notes (following each meeting within 5 business days)

TASK B: Develop Cleaning/Work Activities Work Plan and Health and Safety Plan

The Contractor shall provide a work plan and a site and task-specific HASP for NPS review and acceptance.

The NPS will review the work plan and HASP at the 80% milestone. The Contractor will incorporate all NPS comments and update the work plan and HASP, accordingly.

1. Subtask 1: Develop 80% draft and 100% Final Work Plan and HASP.

1.1) Work Plan and HASP: Within 15 working days of the Contract’s award date, the

Contractor shall submit a draft work plan and HASP for NPS review. The Plan submitted shall be in both digital (text file format [Word]) and hard copy format.

1.2) Work plan requirements. The work plan shall contain the following information:

1) Background, Purpose and Need, Regulatory Issues,

2) Scope of Work including specifics of cleaning/work activities.

3) Field Design, Field Schedule and Means, Methods. Work Practices.

4) Proposed project management, and other sections common to reports of this nature per regulatory requirements.

A. Project Boundaries Identification The Contractor shall use Computer Aided Design (CAD) or line floor plans in order to identify and record all lead/asbestos samples and other hazardous materials and debris.

1.3) HASP requirements: The task- and site-specific Health and Safety Plan must contain all information sufficient to demonstrate the Contractor has completely designed field work to incorporate all tasks and procedures necessary to conduct work called forth in this SOW and contains all mitigation measures, safety standard operating procedures, job hazard analyses and similar necessary to demonstrate tasks and hazard risks are identified and mitigated.

Submittals: 80% and 100% Work plan and HASP e5

TASK C: Conduct Field Work

The Contractor shall include all items and costs necessary to conduct field work (cleaning/work activities) in one mobilization to reduce costs, project complexity and environmental impacts.

1. Subtask 1: Complete Field Work at Building T-1111.

1.1) Conduct Identified Cleaning/Work Tasks

The Contractor shall utilize HAZWOPER-certified and respirator-trained personnel.

These personnel will conduct the identified cleaning/work tasks identified in section

1.2 within Building T-1111 to approximate regular cleaning/working activities. If/when it is determined that there are no potential exposures over the ALs/PELs, respirator-trained personnel will no longer be required.

1.2) Worker Exposure Assessments

The Industrial Hygienist Consultant, using the data gathered from general worker protection measures employed by cleaning Contractor in addition to all other sample collection and design executed by Industrial Hygienist Consultant, will develop worker exposure assessments for these tasks:

1. Equipment and material handling (pre-cleaning)

2. Cleaning equipment and materials in building

3. Cleaning building vertical and horizontal surfaces

4. Dry sweeping of material on floor

5. Supervisor oversight (e.g. someone in the building interior bay but not handling materials)

6. Collection of building perimeter soil samples

1.3) Protective Procedures

The following sections describe the minimum required worker protections.

1.3.1 Supervision

The Contractor shall provide one site Supervisor - Certified by the California Department of Public Health (CDPH) - whose responsibilities include coordination, safety, security, and execution of all phases of the metals clean-up related tasks. The Supervisor will oversee all metals clean-up/remediation activities, supervise the CDPH lead workers, and ensure compliance with these cleaning/remediation specifications and Contractor work plan and HASP. The Supervisor shall be fully-qualified in all aspects of lead abatement practices and procedures, as well as training in relevant federal, state, and local regulatory requirements, procedures and standards, supervisory techniques, reading and interpreting lead inspection reports, interpretation of lead in air data (exposure assessments and perimeter monitoring) and proper disposal procedures.

The Contractor shall ensure that all workers are familiar with all aspects of the planned cleaning/remediation activities during the performance of the work (i.e., workers are trained e6 and prepared to do a good and careful job, and to protect themselves and the surrounding work environment).

1.3.2 Personal Protective Equipment (PPE)

• Personal protection, in the form of disposable coveralls and NIOSH-approved respirators, is required for all workers, supervisors, and authorized visitors entering the work area during all surface cleaning and/or lead related removal tasks.

• Each worker shall be supplied with disposable suits every day. Suits will be containerized daily, and disposed along with other waste contaminated with lead and/or other metals.

• Under no circumstances will anyone entering the removal area be allowed to re-use a contaminated suit. In addition to disposable suits for the workers, the Cleaning/Remediation Contractor shall also supply suits for the Consultant and other personnel who are authorized to inspect the worksite. Disposable suits, such as TYVEK™ suits, and other PPE must be donned prior to entering the work area. The Contractor must provide and maintain a clean area for workers to put on suits and other PPE and to store their street clothes.

• Work clothes shall consist of disposable full-body suits, head covers, gloves with cuffs extending outside the sleeves of the protective suit, boot or shoe covers, and other protection as needed. Hard hats shall be worn, as required.

• Contractor shall furnish eye protection to personnel engaged in remediation operations when the use of a full-face respirator is not required.

• Goggles with side shields will be supplied by Contractor and worn by personnel when working with a material that may splash or fragment, or if protective eye wear is specified on the Safety Data Sheet for that product.

• All used coveralls and disposal PPE will be disposed of as a Resource Conservation and Recovery Act (RCRA) waste along with all cleaning-related waste emanating from these cleaning/remediation activities.

1.3.3 Respirators

The Contractor shall provide workers with personally-issued and marked respiratory equipment approved by National Institute for Occupational Safety and Health (NIOSH) and meeting the specifications of Cal-OSHA. This respiratory equipment shall be suitable for the lead exposure level in the work area according to CCR Title 8, Section 1532.1.

Lead is the prominent contaminant of concern and protection against lead exposure including engineering and/or administrative controls and personal protective equipment is expected to adequately protect against all other metals potentially present. The Contractor shall provide disposable HEPA (P100) cartridges as required, with sufficient replacement cartridges. All workers and supervisors will comply with the contractor-submitted respiratory protection program.

Mercury was detected in nearly all surface samples during preliminary investigations at this site. Mercury vapor concentrations will be evaluated by Consultant in the work areas while performing cleaning/remediation activities under this specification. At this time, Ninyo & Moore (the consulting firm that developed this specification) believes that special e7 protection from mercury vapor will not be needed. However, if measured levels of mercury vapor indicate the need, cartridges approved by NIOSH for both mercury vapor and particulate contaminants (HEPA P100L) will be mandated for site workers during cleaning/remediation activities.

1.3.4 Personal Air Sampling

The following sections describe the minimum level of personal air sampling that is required for the planned cleaning/remediation activities.

1.3.5 General

The Cleaning/Remediation Contractor is required to perform the personal air sampling activities for his employees performing cleaning activities. The results of such sampling shall be posted, provided to individual workers, and submitted to the NPS and Consultant as described herein. These results (along with any perimeter air sampling results) will be used to determine potential exposures (8-hour time-weighted averages, etc.) of workers conducting the cleaning as well as NPS contractors and employees working at Building T-1111.

1.3.6 Personal Air Sampling Details

The Contractor is responsible for personal air sampling. Personal air samples shall be collected in accordance with CCR Title 8, Section 1532.1 (lead). Samples will be collected for each cleaning/remediation task (as applicable). This sampling will be used to determine eight-hour time weighted averages (TWAs). Sampling will be required daily in order to get as much analytical data as possible for exposure modeling.

1.3.7 Sampling Results

Air sampling results shall be transmitted and provided to the NPS, Consultant and individual workers in written form no more than 48 hours after the completion of a sampling cycle. The reporting document shall list each sample’s sampling time and date, personnel monitored, flow rate, sample duration, sample yield, cassette size, and analysts’ name and company, and shall include an interpretation of the results. Air sample analysis results will be reported in micrograms per cubic meter (µg/m3).

1.3.8 Air Monitoring Frequency

The air monitoring frequency for Contractor operations will be established in accordance with the requirements set forth in CCR Title 8, Section 1532.1. Personal air samples will be collected every day (per work task and material).

1.4) Codes and Standards

All work shall conform to the standards set by applicable federal, state, and local laws, regulations, ordinances, and guidelines as may be required by subsequent regulations.

While many of the following standards were written for residential housing, it has become standard industry practice to apply the following standards to schools, commercial buildings and industrial settings. The following is a partial list:

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• The Contractor shall comply with the requirements of the California General Industry Safety and Health Standards, and the Safety and Health Regulations for Construction, Title 8, CCR, including, but not limited to the following sections:

o Section 5144: Respiratory Protection o Section 2405.4: Electrical o Section 1637, 1640, 1658: Scaffolding o Section 1513: Housekeeping o Section 5194: Hazard Communication o Section 1675: Ladders o Section 3215 and 3220: Egress and Emergency Plans o Section 1514: Personal Protective Equipment (PPE) o Section 1519 and 3360: Sanitation o Section 1684, 3555, and 3556: Powered Hand Tools o Section 1502: Contractors Responsibilities o Section 1511: General Safety and Health Provisions o Section 1510: Safety Training and Education o Section 1527 and 3366: Washing Facilities o Section 1528: Gases, Vapors, Fumes, Dusts and Mists o Section 1531 and 5143: Ventilation o Section 3203: Injury and Illness Prevention Program o Section 3204: Access to Employee’s Exposure and Medical Records o Section 6003: Accident Prevention Signs o Section 3221: Fire Prevention Plan o Section 1532.1: Construction Safety Orders, Lead

• The Contractor shall comply with the EPA Regulations pertaining to handling and disposal of lead-containing materials (and/or other metals), as well as the State of California and any local agencies, which have delegated responsibility for the administration and enforcement of federal regulations.

o 22 CCR, Section 66261 e9 o 10 CFR, Part 261

• The Contractor shall comply with all requirements for disposal at an EPA-approved disposal site.

• The Contractor shall comply with California Title 17, Section 8 including California Air Resources Board, Statewide Portable Equipment Registration Program (PERP) (https://www.arb.ca.gov/portable/portable.htm).

• CDPH Certification of Lead-Related Construction Activities, personnel and work practices.

• The following may also apply to this project:

o 24 CFR Parts 35, 36, 37: United States Department of Housing and Urban Development (HUD) Guidelines for the Evaluation and Control of Lead-Based Paint Hazards and Housing o American Society for Testing Materials o American National Standards Institute (ANSI) o ANSI Z228.2-8: Practices

• The Contractor shall at their cost and expense comply with all laws, ordinances, rules, regulations, and guidelines of federal, state, regional, and local authorities regarding green procurement, waste minimization, recycling, sustainability and other applicable and similar requirements as demonstrated in the work plan.

• In addition to any detailed requirements of the Specification, the Contractor shall at his own cost and expense comply with all laws, ordinances, rules, regulations, and guidelines of federal, state, regional, and local authorities regarding handling and storing of lead and other hazardous waste material.

• All regulations by the above and other governing agencies in their most current version are applicable throughout this project. Where there is a conflict between this Specification and the cited federal, state, or local regulations or guidelines, the more restrictive or stringent requirements shall prevail. This Section refers to many requirements found in these references, but in no way is it intended to cite or reiterate all provisions therein or elsewhere. It is the Contractor’s responsibility to know, understand, and abide by all such regulations, guidelines, and common practices.

TASK D: Final Submittals and Reporting The Contractor shall provide the CO with a report submittal which documents all work conducted on predecessor tasks. The NPS will review the report at the 80% milestone.

Contractor will incorporate comments and update accordingly for NPS acceptance.

1. Subtask 1: Develop 80% draft and 100% Summary Report https://www.arb.ca.gov/portable/portable.htm

1.1) Summary Report: The Contractor shall ensure the building survey/report represents work conducted.

The Contractor shall provide, at a minimum, in the report:

A) A Site Background and Brief History of Events to Date.

B) A Description of Activities Section Including but Not Limited to:

• Site Description;

• Copies of pictures taken of field activities, including mobilization, demobilization, and equipment operations.

• A written log of site activities

• Description of any site spills and corrective measures taken

• Tabulated data and sampling results

• Markup of building diagram showing plotted locations of sample data and areas cleaned

Report must be submitted in hard copy and electronically.

Submittal: Final Summary Report

2. Subtask 2: Compile letter response to NPS comments and Finalize Submittal The Contractor shall develop a Response to NPS Comments document that incorporates NPS comments on draft report and meeting notes, provides resolution for all comments and documents changes made between the draft and final reports.

Submittal: Comment Response Document

PART 3 - EXECUTION

The following sections describe the minimum expected materials, equipment, and procedures for execution of the cleaning/remediation activities.

1.1 Materials and Equipment

The work of this Section includes the furnishing of labor, materials, tools, equipment, services and incidentals necessary to complete all planned cleaning/remediation activities in accordance with the plans and specifications. These plans and specifications are intended to describe and provide for a finished and complete piece of work. Work which is described by any portion of these documents shall be complete in every detail and in accordance with established trade practice.

1.2 Approvals and Inspections

All temporary facilities, work procedures, equipment, materials, services, and agreements must strictly adhere to and meet the requirements of this Section along with EPA, OSHA, Cal-OSHA, NIOSH, HUD regulations, recommendations, and guidelines, as well as any other applicable federal, state, and local regulations. Where there exists an overlap of these regulations and guidelines, the most stringent one applies. All work performed by the Contractor is subject to approval of the NPS and the Consultant.

1.3 Work Area Set Up

The following sections describe the minimum requirements for the work area.

1.3.1 Site Safety

The Contractor is responsible for all safety at the work site. This includes, but is not limited to electrical, mechanical (tool), fire, and personnel protective safety. Safety requirements are, for the most part, common sense and sound business practice; however, the Contractor is advised that federal, state, and local regulations exist that govern safety on the work site.

Therefore, in addition to the following, the Contractor is responsible for adhering to the most stringent requirements in affect by any of the following entities or these Specifications.

A primary concern in this type of work is to ensure that adequate exits exist in the event of an emergency and conversely, that adequate entrances exist for emergency personnel. The nature of this work may require sealing entrances and the extensive use of 6-millimeter(mil) polyethylene sheeting; however, the Contractor shall never permanently seal (e.g., nail, bolt, hard cover) any potential escape exits and shall take extra care to clearly identify potential exits and inform the workers.

1.3.2 Signage

Prior to the preparation of Building T-1111 for the planned cleaning/remediation activities, the Contractor shall place warning signs immediately outside all entrances and exits to the building, warning that the cleaning/remediation work is being conducted in the vicinity. The signs shall be in English and Spanish, and be at least 20 inches by 14 inches with bold lettering, not smaller than 2 inches tall, and read:

WARNING:

LEAD CLEANING/REMEDIATION HAZARD

UNAUTHORIZED ENTRY PROHIBITED

NO SMOKING, EATING OR DRINKING

ALLOWED IN THE WORK AREA

Contractor shall also provide signage designating all work areas as “clean”;

“decontaminated”; or “contaminated”.

1.4 Work Procedures

In order to avoid possible exposure to dangerous levels of lead or other metals (and to prevent possible contamination of areas outside the demarcated work area), work shall follow the general guidelines listed below:

1.4.1 Personal Protective Equipment (PPE)

All persons leaving the work area must remove their PPE (except respirators) before leaving.

Suits shall be removed “inside out” to minimize the dispersal of lead dust.

1.4.2 Equipment

All equipment used by the workers inside the work area shall be either left in the work area or thoroughly decontaminated before being removed from the area. Extra work clothing (in addition to the disposable suits supplied by the Contractor) shall be left in the Contractor-provided and designated clean area. The clean area shall be cleaned of all visible debris and disposable materials daily.

1.4.3 Prohibited Activities

Under no circumstances shall workers or supervisory personnel eat, drink, smoke, use vape devices, chew gum, chew tobacco, or remove their respirators in the work area. To do so shall be grounds for the NPS to stop all cleaning/remediation activities. Only in the case of a life-threatening emergency shall workers or supervisory personnel be allowed to remove their protective respirators while in the work area. In this situation, respirators are to be removed for as short a duration as possible.

1.4.4 Footwear

As with additional clothing, footwear not being used beneath the suit shall be left inside the designated clean area. Footwear will be fully-covered by the disposable suit while workers are in containment locations. If tears to the disposable suit occur at the foot location during work activities, the footwear will be HEPA-vacuumed and wet-wiped prior to exiting the decontamination entry/exit locations.

1.4.5 Shock Hazards

• The Contractor is responsible for using safe procedures to avoid electrical hazards.

Contractor shall shut off power and check and/or lockout tagout before work begins when an electrical hazard exists.

• All extension cords and power tools used within the work area shall be attached to Ground Fault Circuit Interrupters (GFCIs).

1.5 Notifications

The Contractor is responsible for notifying all applicable/pertinent oversight agencies as indicated by federal, state, or local law.

1.6 Access to Work Areas

The NPS will provide specific access as required during the project to the Contractor and personnel assigned to the project. The Contractor will be responsible for the security of each and every work area (or portion thereof) involved in the cleaning/remediation project. It will also be the

Contractor’s responsibility to allow only authorized personnel into the work area, and to secure all assigned entrances and exits at the end of the workday so as to prevent unauthorized entry.

The Contractor shall maintain a bound logbook in which any person entering or leaving the work areas must sign and enter the dates and times of entry and departure.

Use of waste containers on-site shall be controlled under the following requirements:

• Location of waste containers onsite shall be coordinated with the NPS.

• The waste containers shall be solid enclosed containers, lined with two layers of 6-mil polyethylene sheeting locked and secured at all times, when not in immediate use.

• The Contractor shall comply with all federal, state, and local regulations and ordinances regarding lead waste storage.

1.7 Containment

Prior to the start of any cleaning/remediation-related work, containment set up will be approved by the Consultant. The Contractor shall establish “containment” as specified in Tables 8.1, 8.2, and 8.3 (as applicable per location) of the HUD guidelines, as applicable per these specifications, and as per the following: Table 1 – Interior Worksite Preparation Levels (not including windows).

Table 1 – Interior Worksite Preparation Levels (not including windows)

Description Level 1 Level 2 Level 3 Level 4

Containment and Barrier System

Not applicable to this project.

Two layers of plastic on entire floor. Plastic sheet with primitive airlock flap on all doorways. Door secured from inside the work area need not be sealed.

Children should not have access to plastic sheeting (suffocation hazard).

Two layers of plastic on entire floor.

Plastic sheet with primitive airlock flap on all doorways to work areas. Doors secured from inside the work area need not be sealed. Overnight barrier should be locked or firmly secured.

Two layers of plastic on entire floor. If entire unit is being treated, cleaned, and cleared, individual room doorways need not be sealed. Doors secured from inside the work area need not be sealed.

Warning Signs Not applicable to this project.

Required at entry to room but not on building (unless exterior work is also under way).

Posted at main and secondary entryways, since occupant will not be present to answer the door.

Posted at building exterior near main and secondary entryways.

Ventilation System Not applicable to this project.

Turned off and all vents in work areas sealed with plastic.

Negative pressure zones (with negative air machines) are required, with a negative pressure differential of -0.02 inches of water.

Same as Level 2. Same as Level 2.

Furniture Not applicable to this project.

Removed from work area. Large items that cannot be moved can be sealed with a single layer of plastic sheeting and left in work area (as needed).

Same as Level 2. Same as Level 2

Table 1 – Interior Worksite Preparation Levels (not including windows)

Description Level 1 Level 2 Level 3 Level 4

Cleanup (See Section 4 for further details)

Not applicable to this project.

HEPA vacuum, wet wash and HEPA vacuum all surfaces in building. Also wet wash and

HEPA vacuum floor in adjacent area(s) used as pathway to work area. Do not store debris inside building overnight; use a secure locked area.

Remove top layer of plastic from floor and discard. Keep bottom layer of plastic on floor for use on the next day. HEPA vacuum, wet wash and HEPA vacuum all surfaces in room.

Also wet wash and HEPA vacuum floor in adjacent area(s) used as pathway to work area. Do not store debris inside building overnight; use a secure locked area.

Full HEPA vacuum, wet wash and HEPA vacuum cycle, as detailed in Section 4.

Dust Sampling Not applicable to this project.

Clearance only. Clearance only. Clearance only.

There are four worksite preparation levels discussed in Table 1. The lowest levels are primarily for interim control activities, while the highest levels are designed for the dustiest areas observed and the associated clean-up/remediation methods.

1.7.1 Decontamination Unit

At a minimum, the Contractor shall construct a two-stage de-contamination unit. This unit shall be connected to the work area for the decontamination of workers contaminated with lead or other metals. The decontamination unit shall consist of an equipment room, dirty room, and wash area in series. The Contractor shall ensure that employees enter and exit the work area through this unit.

• The decontamination unit shall be constructed with 6-mil polyethylene sheeting on floors, walls, and ceiling. Doors through this unit shall be constructed as described in Table 1 above.

1.7.2 Clean Area

The Contractor shall designate a clean area outside the work area(s) for the workers to change into protective equipment. This area shall contain hand-washing facilities, workers’ clean clothes, storage for a HEPA vacuum, and respirator storage space. Contaminated equipment or personnel shall not be permitted in this area. The floors and walls of this area shall be covered with 6-mil polyethylene sheeting. Locations of areas will be coordinated with the NPS and Consultant.

1.7.3 Clean-up/Remediation Area

The Contractor shall pre-clean all surfaces with a HEPA vacuum and remove any furniture, or other movable objects as practical. All debris gathered during this clean-up shall be disposed of properly according to data-dependent waste characterization.

Based upon a NPS assessment of the condition of the non-porous (cloth and paper etc.)

materials within Building T-1111, and a determination as to what materials will be kept/salvaged, the Contractor shall segregate porous and non-porous (metal, plastic, rubber, materials, etc.) items within the work areas of Building T-1111. This shall be done after the set-up of the work area containments, but prior to the initiation of cleaning/remediation activities. Non-porous materials to be salvaged by the Client shall be cleaned and placed in an area to be determined by NPS. Non-porous materials deemed as waste by the Client will be sampled and characterized to determine if it is hazardous or non-hazardous (see Section 5.3, below). Salvaged and cleaned porous and non-porous materials will be stored in an interim clean area to be determined by the Contractor and the Consultant. All non-waste material shall be cleaned by HEPA-vacuuming and/or wet-wiping.

1.8 Abatement Procedures

The following sections describe the minimum requirements for the clean-up/remediation activities.

1.8.1 Overview

The information contained in this Section indicates specific clean-up/remediation procedures for designated components and general cleaning/remediation procedures for non-specific components.

1.8.2 Workmanship

All clean-up/remediation activities shall be conducted in a professional workman-like manner.

The Contractor must realize that any clean-up/remediation procedure may cause damage to the substrate and/or adjacent surface if performed improperly; therefore, strict work controls are required.

1.8.3 Approval

The Contractor must provide a list of materials and equipment proposed for use prior to mobilization to the site for approval from the NPS. No methods involving dry sweeping shall be used.

1.8.4 Disposal

All observed architectural components (floors, walls, rafters, window/door frames and casings) must be cleaned/remediated in accordance with regulations and guidelines of EPA, state and local regulations and ordinances, and all other applicable agencies. All disposal costs associated with the work (including spent PPE) are the responsibility of the Contractor and should be included in their initial bid.

All waste materials shall be wrapped in 6-mil plastic sheeting with all edges and seams sealed or placed in 6-mil plastic bags with the top of the bags twisted so as to form a loop (goose-necked). The loop shall then be sealed. The bags of residue/debris shall then be further containerized in an additional 6-mil plastic bag.

• The sealing process shall include the use of a waterproof tape of sufficient strength so as to maintain the integrity of the seal.

• The residue/debris shall be lightly-misted prior to placement for disposal.

• The residue/debris shall be carefully handled so as to prevent rupture, or in any way diminishing container integrity.

• If wastewater or other metals-related debris is generated during the cleaning/remediation activities (and previously not waste characterized), it shall be collected and containerized in preparation for disposal characterization. Specific laboratory waste disposal requirements are described in Section 3. All sample collection for waste characterization shall be observed by the Consultant

• Results of all laboratory waste disposal testing must be provided to the NPS and the Consultant for review and approval in order to generate appropriate manifests prior to disposal of any wastewater or lead debris. (Consultant will supervise and observe the collection and chain-of-custody documentation for any and all samples collected). Split samples may be collected by the Consultant for QA/QC purposes at the Consultant’s discretion.

1.8.5 Material and Equipment

The work of this Section includes the furnishing of labor, materials, tools, equipment, services, and incidentals necessary to complete the planned cleaning/remediation activities in accordance with the Plans and Specifications that are intended to describe, and provide for, a finished piece of work. What is mentioned by any portion of these documents shall be complete in every detail. The following materials shall be used (at a minimum):

• Flame-resistant Polyethylene sheeting (minimum thickness of 6-mil),

• Plastic bags (minimum thickness of 6-mil),

• Waterproof tape,

• Lead Warning Signs (as required),

• Flexible duct for ventilation units (if required),

• Spray adhesive (fire retardant),

• PPE (NIOSH approved respirators, eyewash stations),

• Ventilation units and exhaust fans,

• HEPA vacuums,

• Polyethylene sealer (concrete compatible),

• Fire extinguishers,

• Portable eye washes,

• All products required to perform the cleaning/remediation activities as specified,

• Other materials, tools, and equipment necessary for the cleaning/remediation activities,

• SDS for all products used (kept on site at all times).

1.8.6 Responsibilities and Supervision

The Contractor will be required to use specific cleaning/remediation methodologies during the course of the planned work. It will be the responsibility of the Contractor to abide by all of the worker protection and safety specifications as outlined. The Contractor will be required to provide backup/emergency electrical service sufficient for the equipment to be used during the cleaning/remediation activities should primary power be shut off. Plumbing shall also be provided by the Contractor so that adequate services are available for washing down the work area(s) after cleaning/remediation and for personal hygiene. The Contractor will be required to have an on-site Supervisor present during all phases of cleaning/remediation and will be required to have all employees trained that perform the actual work.

2.0 CLEANING, INSPECTIONS, AND CLEARANCE

The following sections describe the minimum cleaning, inspections, and clearance requirements.

2.1 End of Day Cleaning

At least thirty minutes prior to the end of each workday, the cleaning/remediation work area must be cleaned of all debris (as needed). Under no circumstances will clean-up be permitted when active cleaning/remediation work is proceeding. All waste materials generated during this daily clean-up shall be disposed of as hazardous waste, unless analytical testing proves otherwise.

2.2 Equipment Cleaning

Non-disposable equipment, such as power and hand tools, generators, and/or vehicles shall be cleaned prior to removal from the area(s) undergoing cleaning/remediation at the site. All equipment shall be cleaned by HEPA-vacuuming and wet-washing.

2.3 High-Efficiency Particulate Air Vacuum

The Contractor will obtain training in the use of HEPA vacuums from the manufacturer prior to use. The Contractor shall obtain HEPA vacuum attachments, such as various size brushes, crevice tools, and angular tools to be used for varied applications and service the HEPA vacuum routinely to assure proper operation. Caution shall be used any time the HEPA vacuum is opened for filter replacement or debris removal. Operators shall wear a full set of protective clothing and equipment, including respirators, when using the HEPA vacuuming equipment or removing/replacing used filters.

2.4 Clean-Up Activities

This clean-up includes removal of any contaminated material, equipment or debris including polyethylene sheeting from the work area. The polyethylene sheeting shall first be sprayed or misted with water for dust control, the resulting cleaning/remediation debris removed, and then the sheeting shall be folded in upon itself.

A) Large Debris

Large debris from cleaning/remediation activities shall be wrapped in polyethylene sheeting at least 6 millimeters thick, sealed with heavy duty duct tape, and stored in an area designated by the Consultant until proper disposal.

B) Small Debris

Prior to picking up or collecting small debris, the surfaces of this debris will be sprayed with a fine mist of water. The debris will be picked up, collected and placed into a single plastic bag, at least 6-mil thick. The bags shall not be overloaded, shall be securely sealed, and shall be stored in an area designated by the Consultant

C) Sheeting

Removal of surface 6-mil polyethylene sheeting shall begin from upper levels. Removal of polyethylene sheeting from floors shall begin at the corners and shall be folded in toward the middle to contain any dust and/or residue. All collected polyethylene sheeting shall be placed in 6-mil polyethylene bags for proper disposal as described in this specification.

D) High-Efficiency Particulate Air Vacuuming

Once the 6-mil polyethylene sheeting is removed from the work area, cleaning shall begin with a thorough HEPA-vacuuming of all surfaces, starting at the ceilings, proceeding down the walls and including window, door, and door/window trim and floor.

The floor shall be vacuumed last, beginning at the farthest corners from the entrance to the work area. HEPA-vacuuming shall again be performed as noted above after the following wet wash.

E) Wet Wash

The Contractor shall next wet wash or mop the same surfaces and allow surfaces to dry. Then a second HEPA-vacuuming of the surfaces will be performed by the Contractor, as described above. By the conclusion of the cleaning phase, all visible dust and debris shall have been completely removed.

F) Hygiene, Cleaning Equipment and Supplies

Special attention shall be given to personal hygiene and the cleaning of supplies and/or equipment. All mop heads, sponges and rags shall be replaced or changed daily, at a minimum. Rags, mop heads or sponges may be re-used if the Contractor has them cleaned via a washing system specially-equipped with HEPA filtration.

G) Detergents

The Contractor shall prepare and use detergents and the manufacturer’s recommended coverage will be followed. Detergent solutions should be replaced as needed and in-kind.

2.5 Visual Inspections and Clearance

In addition to various daily inspections of the cleaning/remediation areas and practices, periodic inspections during the planned cleaning/remediation activities will be performed (at the Consultant’s discretion); at least one during each phase of removal (Work area preparation, Post-Cleaning Inspection, Final Clearance). Each inspection phase will be requested by the Contractor and be performed by the Consultant. The work being inspected must meet the Consultant’s satisfaction before work may begin on the next phase of work. Failure on the part of the Contractor to obtain Consultant approval before proceeding to the next scheduled phase is regarded as a violation of these Section(s). In the event of this occurring, the Consultant will request work to be stopped and the NPS will be contacted to intervene. The three inspections are as follows:

A) Work Area Preparation Completed The Contractor shall have all pre-cleaning/remediation preparations of the work area(s) complete, seek and review approval from Consultant to proceed.

B) Post Removal Inspection The Contractor shall have completed the cleaning/remediation activities and final clean-up of all visible debris, and perform final cleaning techniques of wet-washing and HEPA vacuuming. If the area does not pass a visual inspection, the Contractor shall re-clean the area at Contractor’s expense.

C) Final Clearance When all surfaces have passed visual inspection, wipe sampling will be performed and collected for analysis by Consultant. The standards for passing a wipe test are outlined in Table 3 (below). Should laboratory results indicate that the wipe test clearance level is exceeded, the Contractor shall re-clean the affected area (at no additional cost to the NPS) using the methods specified above. Re-testing will then be performed to verify compliance with the mandated levels. The Contractor shall pay for all additional testing and provide at no additional cost, a re-cleaning of an affected area until the clearance level is achieved. The Contractor is also responsible for any additional expenses (such as relocation expenses and NPS fees) due to failure of clearance testing.

2.6 Inspection/Clearance/Wipe Standards

When clean-up has been completed, a clearance inspection will be performed at the discretion of the Consultant. Wipe sampling locations will be determined by the Consultant. The following standards shall be met for all clearance requirements:

Table 2– Wipe Tests

Type of Abatement Procedure

Number and Location of Wipe Samples

Interior Treatments Two wipe samples from every treated room (up to four rooms) as follows:

- One interior window sill or window trough, alternating between rooms (one floor if window not present).

- One floor.

Other applicable areas may also have wipe samples collected, at the discretion of the Consultant in conformance with these specifications.

Clearance shall be achieved once the laboratory results of the dust wipe samples meet the clearance standards, as described in Chapter 15 of the HUD Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing and CCR, Title 17, Division1, Chapter8, and per the following table:

Table 3– Wipe Standards

Location Standards for Passing a Wipe Test

CDPH (Pb) EPA (Federal)(Pb) BNL Recommended (Cr)

Interior floors/horizontal surfaces ≤ 10 µg/ft2 ≤ 10 µg/ft2 ≤ 31 µg/ft2 Interior window sills/surfaces ≤ 100 µg/ft2 ≤ 100 µg/ft2 ≤ 31 µg/ft2 (

Notes:

CDPH – California Department of Public Health EPA – United States Environmental Protection Agency µg/ft2 – Lead concentration in micrograms per square foot Pb – Lead Cr – Chromium

2.7 Re-tests

Should laboratory results indicate that the wipe test clearance level is exceeded, the Contractor shall re-clean the affected area (at no additional cost to the NPS) using the methods specified above. Re-testing will then be performed to verify compliance with the mandated levels. The Contractor shall pay for all additional testing and fees, and provide at no additional cost a re-cleaning of an affected area until the clearance level is achieved.

3.0 DISPOSAL OF WASTE MATERIAL

The following sections describe the minimum waste disposal requirements.

3.1 Caution Note for Contractor

All materials, whether hazardous or non-hazardous, shall be disposed in accordance with all laws and the provisions of this section and all applicable federal, state, county or local regulations and guidelines. It shall be the sole responsibility of the Contractor to assure compliance with all laws and regulations relating to this disposal.

3.2 Compliance

Procedure for hauling and disposal of metals/dust waste shall comply with CCR Title 22 (DTSC). Waste characterization data will determine the required manifest needs for California Hazardous Waste or Resource Conservation and Recovery Act (RCRA) federal wastes.

3.3 Hazardous Waste Tests

If needed to determine whether the wastes are classified as non-hazardous solid or hazardous waste as defined under the Resource Conservation and Recovery Act (RCRA) (and not already characterized), the Contractor will sample and perform Total Threshold Limit Concentration (TTLC) analysis, and if necessary, based on the TTLC level, the Waste Extraction Test (WET), and Toxicity Characteristic Leaching Procedure (TCLP) and as otherwise specified by the receiving disposal facility analyses will be performed.

Representative sampling, performed by the Contractor under the supervision of the Consultant, shall be required of all material designated for disposal.

If any of these samples are above the TCLP regulatory limits, the Contractor shall dispose of all of that particular type of material as hazardous waste. The following items also apply:

• The Contractor shall further meet the requirements of the State of California, as per Title 22, CCR 66261 and other related regulations. This will include, if applicable, other waste testing, such as TTLC and Soluble Threshold Limit Concentration (STLC).

• All costs associated with disposal of all of the above materials as non-hazardous waste (general demolition), RCRA and State hazardous waste shall be included in the Contractor’s Base Bid Price.

• The Contractor shall submit a completed, written draft manifest to the NPS and the…