RFB951900-01 - Addendum #1.pdf

Addendum 1 for RFB951900-01

Project Name: IMHI Infirmary Building Roof Replacement

DAS RFB #: 951900-01

DAS Project #: 9519.00 Date: 8/18/2026

Questions Due: August 20, 2026, at 10:00am

Bids Due: August 27, 2026, at 2:00pm

TO: PROSPECTIVE BIDDERS:

THIS ADDENDUM FORMS A PART OF THE BIDDING AND CONTRACT DOCUMENTS AND MODIFIES THE BIDDING DOCUMENTS DATED 07-31-2026, WITH AMENDMENTS AND ADDITIONS NOTED BELOW. THIS

ADDENDUM SUPERSEDES AND SUPPLEMENTS ALL PORTIONS OF THE ORIGINAL BIDDING AND

CONTRACT DOCUMENTS WITH WHICH IT CONFLICTS. ACKNOWLEDGE RECEIPT OF THIS ADDENDUM

IN THE IMPACS ELECTRONIC PROCUREMENT SYSTEM. FAILURE TO DO SO MAY DISQUALIFY THE

BIDDER.

QUESTIONS AND ANSWERS FROM PRE-BID MEETING

Q1. Do the entries/exits need to have a temporary canopy installed over the top for protection?

A1. No, per the documents these locations will be locked from the inside and staff will need to use different doors for entry and exit. These closures will need to be coordinated with Story and IMHI ahead of time.

CHANGES TO SPECIFICATIONS AND DRAWINGS

SPECIFICATIONS:

• SECTION 07 01 50 – PREPARATION FOR REROOF – 1.03 SUBMITTALS

o ADD Sentence to paragraph A. For Review (Shop Drawings):

“3. Provide drawing with notes indicating method for working with and temporarily removing existing gutter strap hangers with installation of new drip flashing and reinstallation.”

• SECTION 07 30 70 – STEEP SLOPE ROOFING UNDERLAYMENT – 1.01 SUMMARY

o ADD Sentence to paragraph A. Section Includes:

“3. Specification section 07 30 70 for underlayment at metal flashing with front elevation cornices. See D1/A3.0 with construction drawings (Keynote 29). For underlayment under asphalt shingles see section 07 31 13 Asphalt Shingles, 2.03 Sheet

Materials.”

ATTACHMENTS

1. Pre-Bid Meeting Sign in Sheet held on 08/13/2026.

2. Asbestos Inspection Report from Advanced Environmental dated 8/3/2026.

END OF ADDENDUM

ASBESTOS INSPECTION

REPORT

Inspection Address:

Independence Mental Health Institute Infirmary Roof 2277 Iowa Ave

Independence, IA 50644

Project #: 26-31029

Prepared for:

Sam Vorrie

2810 Wakefield Circle Ames, IA 50010

Prepared by:

Thomas Brent Schreibel

8/3/2026 Date

26-15006 Inspector #

4/21/2027 License Expiration date

TABLE OF CONTENT

1. INTRODUCTION

2. DEFINITIONS

3. GENERAL BUILDING OBSERVATIONS

4. REPORT DATA

a. METHOD

b. REPORT DATA

5. PROJECT SUMMARY

a. POSITIVE ASBESTOS SAMPLE LIST

b. CONCLUSIONS AND RECOMMENDATIONS

LIST OF APPENDICES

APPENDIX A - SAMPLE INVENTORY LIST & LAB ANALYSIS

APPENDIX B - INSPECTOR LICENSE AND CERTIFICATION

APPENDIX C - PICTURES

SECTION 1

INTRODUCTION

For each area of the building, the inspector performing the inspection did the following:

1. Visually inspected the area(s) to identify the locations of all suspected

Asbestos Containing Building Materials.

2. Identify all homogeneous areas of friable and non-friable suspected asbestos.

3. Assume, if necessary, that some or all of the homogeneous area(s) are Asbestos Containing Material (ACM), and for each homogeneous area that is not assumed to be ACM, collect and submit bulk samples for analysis.

SECTION 2

DEFINITIONS:

HOMOGENEOUS AREA

An area which appears similar throughout in terms of color, texture, and date of material application.

SURFACING MATERIAL

Material in a building that is sprayed-on, troweled-on, or otherwise applied to surfaces, such as acoustical plaster on ceilings and fireproofing materials on structural members, or other materials on surfaces for acoustical, fireproofing, or other purposes.

THERMAL SYSTEM INSULATION

Means material applied to pipes, fittings, boilers breeching, tanks ducts, or other interior structural components to prevent heat loss or gain, or water condensation, or other purposes.

MISCELLANEOUS MATERIAL

Interior building material on structural components, structural members or fixtures, such as floor and ceiling tiles, and does not include surfacing material or thermal system insulation.

SAMPLING AND ANALYSIS

All samples to be analyzed by Polarized Light Microscopy (PLM). Analysis was performed in accordance with EPA 40 CFR, Part 763, Appendix A to Subpart F.

A homogeneous area was considered not to contain Asbestos Containing Material (ACM) only if the results of all samples collected from the area showed asbestos in the amounts of one (l) percent (%) or less (_1%). A homogeneous area contains ACM when one or more samples collected from that area shows greater than one (1) percent (%) asbestos (>1%).

FRIABLE

Any material containing more than one (1) percent (%) asbestos that, when dry can be crumbled, pulverized, or reduced to a powder by hand pressure.

NON-FRIABLE (CATEGORY I)

Asbestos containing packaging, gaskets, resilient floor covering, and asphalt roofing products, containing more than one (1) percent (%) asbestos.

NON-FRIABLE (CATEGORY II)

Any excluding Non-Friable (Category I) Asbestos Containing Material, containing more than one (1) percent (%) asbestos.

SECTION 3

General Building Inspection Observations

The building inspection is conducted by a qualified and State of Iowa licensed Asbestos Inspector. The purpose of a building inspection is to identify existing building materials that are asbestos containing materials (ACM). If the inspection is conducted in an occupied building, the Inspector is sometimes denied accessibility to building areas and materials, i.e., the Inspector may not be allowed to cut through floor coverings or walls, remove quarry tiles, etc. There are many situations where ACM are concealed in wall cavities and other non-accessible areas, such as tunnels, crawl spaces, above ceilings, pipe chases, behind wall coverings, beneath debris piles, under various floor coverings, etc. When these situations occur in construction, renovation, and/or demolition, etc., materials in these areas shall be treated as ACM and handled as such by qualified and licensed asbestos personnel. If suspected asbestos containing material is discovered or damaged during the course of any activities, the material shall be considered and treated as ACM to diminish further fiber release. In addition, the Inspector uses an independent laboratory that analyzes the bulk building material samples using Polarized Light Microscopy (PLM). PLM analysis technique may not be as accurate as more expensive analysis techniques for certain building materials. It remains the Building Owner and/or Representative(s)’ responsibility to address this issue and consider analyzing suspect building material using different analysis techniques prior to disturbing the material(s). The following are areas that may not be inspected.

1. Tunnels and Crawl Spaces: During the inspection process, the Inspector attempts to check tunnels and crawl spaces for ACM and the degree of damage to the materials. In most cases, quantification of ACM in these areas is impossible due to the inaccessibility of these areas. In addition, these areas may fall under: "Confined Space Regulations". Due to the congestion in tunnels and crawl spaces, obtaining an accurate quantification for mudded joints, pipe wrap, etc. is almost impossible. The Inspector will quantify ACM only in accessible tunnels and crawl spaces and estimate the quantities in the inaccessible areas.

Some reasons for inaccessibility are as follows: flooded areas, pipe congestion, asbestos and other debris, electrical hazards, confined spaces, unknown gas emissions, low ceilings, etc.

2. Boilers and Thermal System Insulation: Interior portions of boilers, heaters, storage tanks, etc. are not always accessible. Materials in these areas will be treated as ACM. Areas of concern are packing inside boiler doors and liners.

Use extreme care and properly trained personnel when handling these types of materials. Some boilers have insulated metal jackets over fiberglass or ACM.

Thermal system insulation can be found in many different forms, i.e., air cell, preformed magnesium block, millboard, etc. All fiberglass materials are excluded as suspected ACM.

3. Debris: In areas where damaged ACM may be found there may and usually will be ACM debris in the general area of the damaged material. These areas shall be treated with the utmost care even during the inspection and quantification process. The Inspector considers any exposure to this type of material as a health threat.

4. State of Quantification: As a general rule, individual rooms or areas of estimation contain inherently more probability of an error than those groups of rooms or areas or an entire building. In other words, the aggregate tends to be more accurate than the sums of the individual parts. Therefore, when designing response actions (measurements, air samples, etc.), the project designer and the asbestos abatement contractor’s attention shall be given to ensure that quantification of materials and proper methods are followed through careful analysis of the site. If materials are quantified, the asbestos abatement contractor or owner, owner representatives or third parties are responsible for verifying the quantities.

5. The Inspector may take some latitude in the presentation of the Inspection

Report. When the Inspector has found floor tiles, linoleum, and/or carpeting listed he/she may or may not have adhesives listed. Adhesives have been known to contain asbestos and therefore, although not mentioned, it may be presumed to be ACM, listed or not. Testing of the adhesive prior to disturbing is recommended. The same is true for adhesives or mastics used to adhere linoleum to floors or counter tops. All toweled-on and/or sprayed-on surfacing materials; i.e., floor mastics, wall and ceiling surfacing, etc. are either suspected or presumed ACM unless sampled and analyzed to indicate that they are not

ACM.

6. In the Inspection Report, certain items such as mudded joints (MJ) or metal doors (MD), etc. are listed as units or number of units, i.e. 10 MJ, 3 Damaged, which is an indication of count rather than square feet or linear feet. Most materials listed in the assessment are either listed as square feet or linear feet with these noted exceptions.

7. In the Assessment Process, there are additional codes such as ME and MG;

ME representing miscellaneous electrical and MG representing miscellaneous gasket materials. Both codes are used to indicate materials that are unusual to the normal course of an assessment of the building. Miscellaneous electrical materials include old electrical wiring, switchboards, transite panels, etc.

Miscellaneous gasket materials can be found between (thermal) valves, on boiler doors, between fittings, between molds, etc. These codes give the Inspector the ability to qualify materials, which sometimes may not be considered as ACM.

8. An Asbestos Code Sheet is included with the Inspector's inspection report, which informs the client as to the Homogeneous Codes used during the inspection process.

9. Caution- Regarding Inspection results- Floor tiles, adhesives, and drywall (mud) found to not contain asbestos should be re-analyzed under the “Chatfield Method” of TEM analysis. Many times, the results from having these materials analyzed under PLM result in false positives or false negatives. After reviewing your report, please notify the inspector if you want these samples analyzed under the “Chatfield Method”.

10. Any sample less than 10% asbestos may be Point Counted. Point counting is a more accurate method of analyzing bulk samples. The results of the point counting are the results that will determine if the material will be treated as asbestos.

11. Asbestos inspections are performed based on current understanding of the regulations. As new interpretations of the regulations are made aware of by the EPA, DNR, and Iowa Division of Labor. Advanced Environmental Testing and Abatement Inc. will adapt their inspections to comply with these new procedures.

If additional sampling is required by the different agencies, Advanced Environmental will do the additional sampling. The owner is responsible for the additional cost for these samples as well as labor.

12. Advanced Environmental shall not be responsible for any cost of abating any additional asbestos discovered in any renovation or demolition activities. Any additional items discovered shall be tested when they become accessible. For example, old adhesives may be under new floor tiles and adhesives. Additional materials may be concealed in walls, under multi layers of flooring, etc.

13. All amounts listed are estimates. It is up to other contractors to field verify any amounts that are listed within this report.

14. All material that looks similar should be treated as asbestos containing materials.

15. Asbestos Material containing <1%. Some material tested for asbestos may contain trace amounts of asbestos and be below the threshold for asbestos contain material according to both the Iowa DNR and Iowa State Code. However, the Federal Occupational Safety and Health Administration still have some regulations that contractors must follow under 29 CFR 1926.1101. Contractors working with asbestos material with <1% asbestos must still produce a negative and initial exposure assessment, completed by a “competent person”.

Contractors must follow 29 CFR 1926. 1101 (g)(1)(ii) and (iii) and 29 CFR 1926.

1101(g)(3)(i), (ii), and (iv). Please contact Advanced Environmental Testing and Abatement, Inc. for consultation on how to handle material with <1% asbestos.

16. Flat roofs: If any layer of a flat roof tests positive for asbestos, all layers should be considered asbestos and removed as such. Advanced Environmental makes every effort to core roof samples through all layers. If flashing is identified as asbestos containing, all tar on walls and adjacent roof decks shall be bid as and treated as asbestos containing unless separately and disproved by the abatement contractor.

17. Prior to the start of any demolition, have the demolition contractor review the asbestos inspection report, do a building walk through and sign that he agrees with the report and sees no questionable items. If any suspect material is discovered during the demolition, the demolition contractor shall stop immediately and inform the building owner of the suspect materials.

18. If asbestos containing materials are found during demolition:

1: Stop demolition 2: Call inspector 3: Notify DNR of change through notification and phone call:

515-725-9576

Options for handling found asbestos during demolition activities:

1: Have the inspector stay on site and direct what ACM (RACM) should go as RACM or what they want to go as regular construction waste.

2: Least logical: Most Expensive: Treat all waste as RACM. This isn’t necessary in most cases. Demolition contractors have the most to gain in this option.

19. The inspector shall not be responsible for the cost of abating any “found” asbestos after the original inspection. The inspector did not create them just aided in identifying them. The owner pays for all abatement and RACM found or made on the site. Payment for the inspection means acceptance of the conditions herein – no exceptions.

ASBESTOS CODES

A = Assumed MJ = Mudded Joint ADH = Adhesive NC = Nose Cap APW = Air Cell Pipe Wrap NF = Non-friable BP = Boiler Plaster NSM = Not Suspect Material C = Ceiling P or PH = Previous History CAPS = Stair Treads PP = Patched Plaster/Drywall CQ = Can’t Quantify PSA = Sand Plaster CT = Ceiling Tiles PSM = Smooth Plaster CT/12 = 12” Ceiling Tiles S = Sample/Samples/Sampled DAM. = Damaged SCT = Suspended Ceiling Tile DEB = Debris SR = Sample Result DW = Drywall ST = Storage Tank

F = Friable SUR = Surfacing FE = Furnace Exhaust T = Thermal FT = Floor Tiles Thermal Pipe Measurement = Linear Ft GASK = Gaskets TR = Transite

GYM = Gypsum TSI = Thermal System Insulation HOMO = Homogeneous VC = Vibration Cloth LINO = Linoleum VDW = Vinyl Covered Drywall MISC = Miscellaneous Non-Friable W = Walls MAC = Metal Asbestos Chimney WD = Wood Door MATL DESC = Material Description N = North MD = Metal Door S = South ME = Miscellaneous Electrical E = East MF = Miscellaneous Friable W = West

1. All Metal Doors are listed by quantities, example 3 = 3 metal doors.

2. All Mudded Joints are listed by quantities of MJ, not sizes.

3. All Pipe Wrap materials are listed in linear feet.

4. All other measurements are square feet unless stated elsewhere.

5. Sample Results: N = Not Considered Asbestos Containing Material

Y = Considered Asbestos Containing Material P or PH = Previous History N/A = Not Analyzed <1% = Contains less than 1% Asbestos Containing Material

>1% = Contains more than 1% Asbestos Containing Material

6. All Adhesives are considered Asbestos Containing Material (ACM) which can’t be quantified - Non-Friable ACM.

7. All Seals and Gaskets are considered Asbestos Containing Material (ACM) which can’t be quantified – Non-Friable ACM.

SECTION 4

ASBESTOS INSPECTION REPORT SUMMARY

METHOD:

All collected samples were submitted to EMC LABS, INC., located in Phoenix, Arizona.

EMC LABS is accredited by the National Institute for Standards and Technology (NIST) under the National Voluntary Laboratory Accreditation Program (NVLAP #101926-0) for Polarized Light Microscopy (PLM) analysis. The sampling was conducted by a State of Iowa licensed asbestos inspector and followed the National Emission Standards for Hazardous Air Pollutants (NESHAPS) protocols. Bulk samples of suspect asbestos-containing materials (ACMs) were analyzed using EPA Method 600-R93-116 via PLM.

OVERVIEW:

Advanced Environmental Testing and Abatement, Inc. performed an Asbestos Containing Materials (ACM) Inspection on July 28th 2026. The purpose of this inspection was to identify the presence of asbestos-containing materials prior to the future restoration of the basement after flooding.

• Property Description:

o IMHI Infirmary Roof

• Occupancy Status at Time of Inspection: Occupied

• Scope of Inspection: Tested Roofing materials for future roof replacement.

RESULTS:

• Total Bulk Samples Collected: Fifteen (15)

• Asbestos Detected: Two (2)

All building materials similar in appearance, color, and/or texture to those determined to contain asbestos must be assumed to contain asbestos throughout the building.

SECTION 5

POSITIVE MATERIALS:

The following samples tested positive (>1%) for asbestos or are assumed to contain asbestos:

Material Color Location Results Qty

Tar Black Middle Upper Roof Southern Overhang

Chrysotile 5% 20 Sq Ft.

Tar Black Seam Tar on Masonry Detail Middle Upper Roof

Chrysotile 3% 75 Linear Ft.

** Seam Caulking is assumed to be positive on both parapets with Masonry details qty reflect both sides. **

REGULATION REVIEW

The United State Environmental Protection Agency definition of asbestos containing materials (ACM) is a material with an asbestos content greater than 1%. According to Iowa Division of Labor, ACM is any material found to contain asbestos, regardless of its concentration. Materials containing asbestos containing <1% asbestos still have some Division of Labor regulations overseeing removal of the material.

CONCLUSIONS AND RECOMMENDATIONS

The results of laboratory testing during the asbestos renovations contained Two (2) positive samples out of Fifteen (15)taken for asbestos in one homogenous material.

Advanced Environmental Testing and Abatement, Inc. make the following recommendations and conclusions:

1: Removal of all asbestos containing materials prior to demolition by a Permitted asbestos company with the Iowa Department of Inspections, Appeals, and Licensing.

APPENDIX A

SAMPLE INVENTORY LIST, LAB ANALYSIS

# Sample No

Material Color Location Current Condition

Results

1 1A Hard Rubberized Coating

Black Roof Valley SW Side Good None Detected

2 1B Hard Rubberized Coating

Black Roof Valley SW Side Good None Detected

3 2A Shingle Grey-Black Middle Upper Roof SW Facing Side Good None Detected

4 3A Shingle Grey-Black- Brown

Middle Upper Roof SW Facing Side Good None Detected

5 4A Roofing Felt Blackish/Gray Middle Upper Roof NE Facing Side Good None Detected

6 5A Caulking Tan/Clear Middle Upper Roof NW Facing Side Good None Detected

7 5B Caulking Tan/Clear Middle Upper Roof NW Facing Side Good None Detected

8 6A Caulking Gray Middle Upper Roof NW Side Good None Detected

9 6B Caulking Gray Middle Upper Roof NE Side Good None Detected

10 7A Flat Roofing Core

Multi Northern Most Flat Roof Good None Detected

11 7B Flat Roofing Core

Multi Southern Most Flat Roof Good None Detected

12 8A Parapet Tar Black Southern Most Flat Roof Good None Detected

13 9A Roofing Tar Black Middle Upper Roof Southern Overhang Good Chrysotile 5%

14 10A Shingle Brown North Western, Lower Roof Patch Good None Detected

15 11A Roofing Tar Black Middle Upper Roof Northern Parapet Seam Good Chrysotile 3%

APPENDIX B

INSPECTOR LICENSE AND CERTIFICATION

APPENDIX C

PICTURES

1A-Hard Rubberized Coating, Roof Valley SW Side-None Detected 1B-Hard Rubberized Coating, Roof Valley SW Side-None Detected

2A-Shingle, Middle Upper Roof SW Facing Side-None Detected

4A-Roofing Felt, Middle Upper Roof NE Facing Side-None Detected

5A-Caulking, Middle Upper Roof NW Facing Side-None Detected

5B-Caulking, Middle Upper Roof NW Facing Side-None Detected

6A-Caulking, Middle Upper Roof NW Side-None Detected

7A-Flat Roofing Core, Northern Most Flat Roof-None Detected

7B-Flat Roofing Core, Southern Most Flat Roof-None Detected

8A-Parapet Tar, Southern Most Flat Roof-None Detected

9A-Roofing Tar, Middle Upper Roof Southern Overhang-Chrysotile 5%

10A-Shingle, North Western, Lower Roof Patch-None Detected

11A-Roofing Tar, Middle Upper Roof Northern Parapet Seam-Chrysotile 3%