April 25, ADDENDUM NO. 2 This Addendum and attachments consists of: 17-Pages. ITB Turnagain Elementary School Interior Upgrades

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1 Anchorage School District Purchasing Warehouse 4919 Van Buren Street Anchorage, Alaska Phone (907) April 25, 2018 ADDENDUM NO. 2 This Addendum and attachments consists of: 17-Pages TO: SUBJECT: All ASD Plan Holders ITB Turnagain Elementary School Interior Upgrades DUE DATE: Prior to 2:00 p.m., Local Time May 2, 2018 The following additions, corrections and changes are hereby made to the subject Invitation to Bid 1. ADD the attached Supplemental Hazardous Material Results, completed in 2016, consisting of 12 pages. 2. REPLACE Section Sound Absorbing Wall Units in its entirety with the attached Section Sound Absorbing Wall Units consisting of three (3) pages. The following clarifications, questions and answers are provided for use in responding to the subject Invitation to Bid: Q1: Section Sound Absorbing wall Units 2.02 B3 States Edge profile as indicated on drawings can t find detail Supplier needs fabric type and color before they can quote product A1: See the attached document as noted in Item 2 above. Q2: The specifications have deleted the requirement for a builders risk policy. Is the Anchorage School District responsible for the coverage should there be an occurrence that would cause damage to the project in the course of the work? Why has this requirement been deleted from the scope of the work? This project is bid on May 2, A2: Bid the documents as specified. Q3: Has an Hazardous Building Material survey been completed for work to be performed? Other projects at Turnagain ES have contained asbestos and lead. Can you supply information the absence of these materials? Please let me know. A3: An additional hazmat survey of the work area has been completed and determined that the analysis of all materials collected detected no asbestos containing materials. The work area under this project is of newer construction then the rest of the school. Please reference attached Supplemental Hazmat Report and Results.

2 TURNAGAIN ES INTERIOR UPGRADES ITB Q4: In section Sound Absorbing Wall Units describes the product requested. The section refers to the print (A3.2) for the beveled edge detail. We haven t been able to find a detail on the panels in question. Could we get the edge detail for pricing. A4: See the attached document as noted in Item 2 above. All other terms and conditions remain the same. Note to Bidders: This Addendum must be signed and returned with your bid or acknowledged where indicated in Section Failure to do so may cause your bid to be non-responsive. Contractor Name: Authorized Representative Signature: Name and Title (please print): END OF ADDENDUM Page 2 of 2

3 383 Industry Way, Ste Anchorage, AK Phone (907) Fax (907) November 17 th, 2016 Nvision Architecture 1231 Gambell Street Suite: 400 Anchorage AK Attn: Paul Baril RE: Turnagain Elementary School Multi-Purpose Room and Gymnasium Suspect/Presumed Asbestos Containing Materials On 10/31/16 and 11/01/16 White Environmental Consultants Inc. (WEC) conducted an inspection concerning the possibility of suspect/presumed asbestos containing materials from the interior of the Multi-Purpose Room and Gymnasium of Turnagain Elementary School located in Anchorage, Alaska. The sampling was done specifically to address materials that would be disturbed during the proposed ceiling lighting upgrade within both areas. Microvac sampling (dust) was conducted above the ceiling in both the Multi-Purpose Room and Gymnasium. WEC also collected suspect materials from the ceilings of both the project areas, Bulk samples consisted of the following materials: Joint Compound Ceiling Tiles Ceiling Tile mastic Bulk samples were analyzed at WEC s AIHA and NVLAP accredited laboratory located in Anchorage, Alaska. Analysis was performed utilizing EPA Method 600/R-93/116. Laboratory analysis of all materials found no asbestos detected (see attached report), the materials should be considered non-hazardous and may be disposed of as general construction debris and does not pose an occupational health hazard. Dust samples were collected at above ceiling locations and sent to AMA Analytical Services AIHA and NVLAP accredited laboratory located in Lanham, Maryland. Samples were analyzed by ASTM Method D (2014). Four samples were collected in the Multi-Purpose Room and two above ceiling in the Gymnasium at accessible locations, sampling area consisted 100 square centimeters. Upon laboratory analysis (see attached report) no asbestos structures were detected in any of the samples collected. Proposed work in both areas in relation to the proposed ceiling lighting upgrade can be considered part of the general construction as no hazardous material in relation to asbestos were detected. 1 P a g e

4 Respectfully, Brett O Bray - CMC (Board Certified Microbial Consultant) Vice President White Environmental Consultants Inc 2 P a g e

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15 SOUND-ABSORBING WALL UNITS DIVISION 09 Section SECTION SOUND-ABSORBING WALL UNITS PART 1 - GENERAL 1.01 SUMMARY A. Section includes shop-fabricated, sound-absorbing acoustical panel units tested for acoustical performance PREINSTALLATION MEETINGS A. Preinstallation Conference: Conduct conference at Project site ACTION SUBMITTALS A. General: Comply with the requirements of Section B. Product Data: For each type of product. C. Sustainable Design Submittals Product Data: For adhesives, indicating VOC content. D. Shop Drawings: For unit assembly and installation. E. Samples: For each exposed product and for each color and texture specified INFORMATIONAL SUBMITTALS A. Product certificates CLOSEOUT SUBMITTALS A. Maintenance data. PART 2 - PRODUCTS 2.01 PERFORMANCE REQUIREMENTS A. Wall materials shall comply with the requirements of the California Department of Public Health's "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers." B. Fire-Test-Response Characteristics: Units shall comply with "Surface-Burning Characteristics" or "Fire Growth Contribution" Subparagraph below, or both, as determined by testing identical products by UL or another testing and inspecting agency acceptable to authorities having jurisdiction: 1. Surface-Burning Characteristics: Comply with ASTM E 84; testing by a qualified testing agency. Identify products with appropriate markings of applicable testing agency. a. Flame-Spread Index: 25 or less. Turnagain ES Interior Upgrades Project Section Page 1 of 3

16 2.02 SOUND-ABSORBING WALL UNITS b. Smoke-Developed Index: 450 or less. ADDENDUM NO. 2 SOUND-ABSORBING WALL UNITS DIVISION 09 Section A. Basis of Design: Conwed Designscape Wall Technology Respond IR108 Series Acoustical Panels FABRICATION 1. Construction: Composite core of dimensionally stable rigid fiberglass, laminated with impact resistant pcf molded glass fiber. 2. Core Fiberglass Density: 6-7 pcf. 3. Cores laminated with 1/8 inch layer of pcf molded glass fiber. 4. Core Thickness: 1-5/8 inch. 5. Manufacturing Tolerances: Standard +/- 1/16 inch for width and length. 6. Width: inches and custom. 7. Length: inches and custom. 8. Corners: Square. 9. Edge Profile: Square 10. Edge Treatment: Resin Hardened 11. Fabric Finish: Manufacturer, pattern and color as selected from Manufacturers Standard Color Selection, Guilford of Maine, True Textiles, Inc. FR (Four colors to be selected during submittal process); applied directly over face and edges of panels to provide full finished edge, fully tailored corners. 12. Mounting Type: Z-Clip to Z-Bar. 13. Flammability (ASTM E84): Panel components shall have a Class A rating per ASTM E Acoustical Performance: Noise Reduction Coefficient (NRC) for 1-5/8 inch Thickness: Mounted in accordance with ASTM C423. A. Standard Construction: Use manufacturer's standard construction unless otherwise indicated; with facing material applied to face, edges, and back border of dimensionally stable core; and with rigid edges to reinforce panel perimeter against warpage and damage. B. Core-Face Layer: Evenly stretched over core face and edges and securely attached to core; free from puckers, ripples, wrinkles, or sags. Turnagain ES Interior Upgrades Project Section Page 2 of 3

17 SOUND-ABSORBING WALL UNITS DIVISION 09 Section C. Facing Material: Apply fabric facing fully covering visible surfaces of unit; with material stretched straight, on the grain, tight, square, and free from puckers, ripples, wrinkles, sags, blisters, seams, adhesive, or other visible distortions or foreign matter. 1. Fabrics with Directional or Repeating Patterns or Directional Weave: Mark fabric top and attach fabric in same direction so pattern or weave matches in adjacent units. D. Dimensional Tolerances of Finished Units: Plus or minus 1/16 inch. PART 3 - EXECUTION 3.01 INSTALLATION A. Install units in locations indicated. Unless otherwise indicated, install units with vertical surfaces and edges plumb, top edges level and in alignment with other units, faces flush, and scribed to fit adjoining work accurately at borders and at penetrations. B. Comply with manufacturer's written instructions for installation of units using type of mounting devices indicated. Mount units securely to supporting substrate. C. Align fabric pattern and grain with adjacent units CLEANING A. Clip loose threads; remove pills and extraneous materials. B. Clean panels on completion of installation to remove dust and other foreign materials according to manufacturer's written instructions. END OF SECTION Turnagain ES Interior Upgrades Project Section Page 3 of 3