Attachment_1a_Amendment_to_Specifications.pdf

140P8319Q0051, Upgrade water system Nez Perce NHP Attachment 1a, Amendment to Specifications and Drawings

BIHO 205745 Specification Amendment

Amendment to Specifications & Drawings

The following specifications are revised as indicated. All other specifications not called out in this amendment are unchanged.

Summary of Changes in this amendment

1. Delete Notes 11 & 13 from Sheet G02.

2. Add 01 31 00 Paragraph 1.3.C.10d -- requires Contractor to submit stamped as-built drawings to Idaho DEQ.

3. Add 01 50 00 Paragraph 3.4.H.9 -- requires Contractor to submit Hot Work Permit.

4. Add Section 01 57 19.11 – Indoor Air Quality.

BIHO 205745 Specification Amendment

1. Delete Notes 11 & 13 from Sheet G02

Traffic control is not necessary for this project and a stormwater pollution prevention plan and temporary erosion and sedimentation control plan are not necessary.

2. Section 01 31 00 Paragraph 1.3.C.10

Current specification:

Project Permit

a. The Idaho State Department of Environmental Quality (DEQ) is responsible for approving projects that impact public water systems.

b. The Idaho DEQ approved the water system treatment modifications, under

Equipment Modifications; Spalding Nez Perce National Historic Park, DEQ File: 2018AGD8398. A copy of the permit is provided at the end of this section.

c. The Idaho DEQ Approval Conditions are listed on the provided permit.

Add Paragraph 1.3.C.10.d:

10. Project Permit

a. The Idaho State Department of Environmental Quality (DEQ) is responsible for approving projects that impact public water systems.

b. The Idaho DEQ approved the water system treatment modifications, under

Equipment Modifications; Spalding Nez Perce National Historic Park, DEQ File: 2018AGD8398. A copy of the permit is provided at the end of this section.

c. The Idaho DEQ Approval Conditions are listed on the provided permit.

d. Contractor shall submit as-built drawings to DEQ verified and stamped by an engineer licensed in the State of Idaho.

3. Section 01 50 00 Paragraph 3.4.H

Add Paragraph 3.4.H.9

Prior to conducting work that involves an open flame, the Contractor will complete a Hot Work Permit (Form HW-1) and submit to the Contracting Officer Representative for approval and coordination.

BIHO 205745 Specification Amendment SECTION 01 57 19.11 –

INDOOR AIR QUALITY

4. Add Section 01 57 19.11 – Indoor Air Quality Management

SECTION 01 57 19.11 – INDOOR AIR QUALITY

MANAGEMENT PART 1 - GENERAL

1.1 SUMMARY

A. Section includes:

1. Special requirements for Indoor Air Quality (IAQ) management during construction operations.

a. Control of emissions during construction.

b. Moisture control during construction.

2. Procedures for testing baseline IAQ. Baseline IAQ requirements specify maximum indoor pollutant concentrations for acceptance of the facility.

1.2 DEFINITIONS

A. Definitions pertaining to sustainable development: As defined in ASTM E2114.

B. Adequate ventilation: Ventilation, including air circulation and air changes, required to cure materials, dissipate humidity, and prevent accumulation of particulates, dust, fumes, vapors, or gases.

C. Hazardous Materials: Any material that is regulated as a hazardous material in accordance with 49 CFR 173, requires a Material Safety Data Sheet (MSDS) in accordance with 29 CFR 1910.1200, or which during end use, treatment, handling, storage, transportation or disposal meets or has components which meet or have the potential to meet the definition of a Hazardous Waste in accordance with 40 CFR 261. Throughout this specification, hazardous material includes hazardous chemicals.

1. Hazardous materials include: pesticides, biocides, and carcinogens as listed by recognized authorities, such as the Environmental Protection Agency (EPA) and the International Agency for Research on Cancer

(IARC).

D. Indoor Air Quality (IAQ): The composition and characteristics of the air in an enclosed space that affect the occupants of that space. The indoor air quality of a space refers to the relative quality of air in a building with respect to contaminants and hazards and is determined by the level of indoor air pollution and other characteristics of the air, including those that impact

BIHO 205745 Specification Amendment SECTION 01 57 19.11 – thermal comfort such as air temperature, relative humidity and air speed.

E. Interior final finishes: Materials and products that will be exposed to interior occupied spaces; including flooring, wall covering, finish carpentry, and ceilings.

F. Packaged dry products: Materials and products that are installed in dry form and are delivered to the site in manufacturer's packaging; including carpets, resilient flooring, ceiling tiles, and insulation.

G. Wet products: Materials and products installed in wet form, including paints, sealants, adhesives, special coatings, and other materials which require curing.

1.3 QUALITY ASSURANCE

A. Inspection and Testing Lab Qualifications: Minimum of 5 years’ experience in performing the types of testing specified herein.

1.4 SUBMITTALS

A. Indoor Air Quality (IAQ) Management Plan: After award and before the Pre-construction conference, prepare and submit an IAQ Management Plan including, but not limited to, the following:

1. Procedures for control of emissions during construction.

a. Identify schedule for application of interior finishes: Identify each interior finish that either generates odors, moisture, or vapors or is susceptible to adsorption of odors and vapors, and indicate air handling zone, sequence of application, and curing times.

b. Identify potential sources of odor and dust.

c. Identify construction activities likely to produce odor or dust.

d. Identify areas of project potentially affected, especially occupied areas.

e. Evaluate potential problems by severity and describe methods of control.

f. Describe construction ventilation to be provided, including type and duration of ventilation, use of permanent HVAC systems, types of filters and schedule for replacement of filters.

g. Describe cleaning and dust control procedures.

h. Describe coordination with commissioning procedures.

2. Procedures for moisture control during construction.

a. Identify porous materials and absorptive materials.

b. Identify schedule for inspection of stored and installed porous and absorptive materials.

3. Revise and resubmit Plan as required by Contracting Officer.

a. Approval of Contractor’s Plan will not relieve the Contractor of responsibility for compliance with applicable environmental regulations.

BIHO 205745 Specification Amendment SECTION 01 57 19.11 –

B. Product Data:

1. Submit product data for filtration media used during construction and during operation. Include Minimum Efficiency Reporting Value

(MERV).

2. Material Safety Data Sheets: Submit MSDSs for inclusion in Operation and Maintenance Manual for the following products.

a. Adhesives.

b. Floor and wall patching/leveling materials.

c. Caulking and sealants.

d. Paint.

e. Clear finish for wood surfaces.

f. Lubricants.

g. Cleaning products.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1 IAQ MANAGEMENT - EMISSIONS CONTROL

A. During construction operations, follow the recommendations in SMACNA IAQ Guidelines for Occupied Buildings under Construction.

B. HVAC Protection:

1. Seal return registers during construction operations.

2. Provide temporary exhaust during construction operations

3. To the greatest extent possible, isolate and/or shut down the return side of the HVAC system during construction. When ventilation system must be operational during construction activities, provide temporary filters at all air inlets (returns) and at all locations for filters prescribed in the design.

4. Contractor shall bear the cost of cleaning required due to failure to protect ducts and equipment from construction dust.

C. Source Control: Provide low and zero VOC materials as specified.

D. Pathway Interruption: Isolate areas of work as necessary to prevent contamination of clean or occupied spaces. Provide pressure differentials and/or physical barriers to protect clean or occupied spaces.

E. Housekeeping: During construction, maintain project and building products and systems to prevent contamination of building spaces.

F. Temporary Ventilation: For materials/products that generally require ventilation for off gassing, provide an ACH (air changes per hour) of 1.5 or more and as follows:

1. Provide minimum 48 hour pre-ventilation of packaged dry products prior to

BIHO 205745 Specification Amendment SECTION 01 57 19.11 –

INDOOR AIR QUALITY

installation. Remove from packaging and ventilate in a secure, dry, well-ventilated space free from strong contaminant sources and residues. Provide a temperature range of 60 degrees F minimum to 90 degree F maximum continuously during the ventilation period. Do not ventilate within limits of Work unless otherwise approved by Contracting Officer.

2. Provide adequate ventilation during and after installation of interior wet products and interior final finishes.

3. Provide filtration media with a Minimum Efficiency Reporting Value (MERV) of 8 as determined by ASHRAE 52.2 during construction.

G. Scheduling: Schedule construction operations involving wet products prior to packaged dry products to the greatest extent possible.

H. Flush-Out: After construction ends, prior to occupancy and with all interior finishes installed, perform a building flush-out by supplying a total air volume of 14,000 cu.ft. of outdoor air per sq.ft. of floor area while maintaining an internal temperature of at least 60 degrees F and relative humidity no higher than 60%.

1. Obtain Contracting Officers concurrence that construction is complete enough before beginning flush-out.

2. If additional construction involving materials that produce particulates or any of the specified contaminants is conducted during or after flush-out then the flush-out process must be restarted.

3. Install new HVAC filtration media in all locations identified to have permanent filtration in the contract documents after completion of flush-out and before occupancy or further testing.

3.2 IAQ MANAGEMENT - MOISTURE CONTROL

A. Housekeeping:

1. Keep materials dry. Protect stored on-site and installed absorptive materials from moisture damage.

2. Verify that installed materials and products are dry prior to sealing and weatherproofing the building envelope.

3. Store interior absorptive materials only after building envelope is sealed and weatherproofed.

B. Inspections: Document and report results of inspections; state whether or not inspections indicate satisfactory conditions.

1. Examine materials for dampness as they arrive. If acceptable to Contracting Officer, dry damp materials completely prior to installation; otherwise, reject materials that arrive damp.

2. Examine materials for mold as they arrive and reject materials that arrive contaminated with mold.

3. Inspect stored and installed absorptive materials regularly for dampness and mold growth. Inspect weekly.

a. Where stored on-site or installed absorptive materials become wet, notify

BIHO 205745 Specification Amendment SECTION 01 57 19.11 –

INDOOR AIR QUALITY

Contracting Officer. Inspect for damage. If acceptable to the Contracting Officer, dry completely prior to closing in assemblies; otherwise, remove (in accordance with the Waste Management Plan) and replace with new materials.

4. Site drainage: Verify that final grades of site work and landscaping drain surface water and ground water away from the building.

5. Weather-proofing: Inspect moisture control materials as they are being installed.

Include the following:

C. Weather barrier: Verify Weather barrier is installed without punctures and/or other damage.

D. Schedule:

1. Schedule work such that absorptive materials, including but not limited to porous insulations, paper-faced gypsum board, ceiling tile, and finish flooring, are not installed until they can be protected from rain and construction-related water.

2. Weather-proof as quickly as possible. Schedule installation of moisture-control materials, including but not limited to air barriers, flashing, exterior sealants and roofing, at the earliest possible time.

E. Testing for Moisture Content: Test moisture content of porous materials and absorptive materials to ensure that they are dry before sealing them into an assembly. Document and report results of testing. Where tests are not satisfactory, dry materials and retest. If satisfactory results cannot be obtained with retest, remove and replace with new materials.

1. Wood: Moisture test as per ASTM D4444 - Standard Test Methods for Use and Calibration of Hand-Held Moisture Meters; unless otherwise indicated acceptable upper limits for wood products are < 20% at center of piece; < 15% at surface.

F. Testing for Moisture Penetration:

1. Exterior Walls:

a. Water Leakage: Review as per ASTM E2128 Standard Guide for

Evaluating Water Leakage of Building Walls.

END OF SECTION 01 57 19.11

9. Prior to conducting work that involves an open flame, the Contractor will complete a Hot Work Permit (Form HW-1) and submit to the Contracting Officer Representative for approval and coordination.