2016-04-25_Proj_002-490_Bridge_Asbestos_Inspection_Report_wAtts.pdf

Mold ♦ Indoor Air Quality ♦ Asbestos ♦ Environmental Consulting

INDOOR/OUTDOOR

ENVIRONMENTAL, LLC

1632 Colorado Gulch Helena, Montana 59601

Phone: 406/439-1247 Fax: 406/442-6335

Email: frantz.rp@gmail.com April 25, 2016

Seth English-Young Environmental Specialist Federal Highway Administration Western Federal Lands 610 East Fifth Street Vancouver, WA 98661 Tel: 360-619-7803

RE: Asbestos Inspection Report

FHWA-WFLHD Projects: MT PHILLIPS 201(1), MT SWEETGRASS 210(1), MT STILLWATER 207(1), MT DOT 569(3)

Indoor/Outdoor Environmental Project No. 002-490

Dear Mr. English-Young:

This report transmits the findings from asbestos inspections performed by Indoor/Outdoor Environmental’s (henceforth, “I/O’s”) Environmental Scientist and Accredited Asbestos Inspector Robert Frantz for the above-referenced sites on April 13, 14, and 15, 2016.

The inspections were asbestos surveys of materials to be impacted by demolition activities in the structure listed below. I/O collected samples of suspect asbestos-containing materials (ACM) in exposed components of the structures. The asbestos inspection was requested by Mr. English- Young, with the Federal Highway Administration, Western Federal Lands based in Vancouver, WA.

The inspection was conducted, and this report was produced, in accordance with applicable requirements of NESHAP and the Administrative Rules of Montana (ARM 17.74.354).

The sample descriptions, locations and laboratory analytical results are summarized in Tables 1- 5, the laboratory report and sample chain of custody are in Attachment 1, and sample locations are listed in the Chain of Custody. Site and sample photographs are in Attachment 2.

FINDINGS AND CONCLUSIONS

� I/O concludes that No Asbestos was detected in samples of materials suspected to contain asbestos in any of the following structures, thus, no Asbestos-Containing Materials are present in the structures, and no asbestos abatement activities are required to remove or otherwise impact the subject bridges, which include:

o MT Phillips 201(1), Dodson South Canal Bridge;

o MT Sweetgrass 910(1) Miller Creek Bridge;

o MT Sweetgrass 910(1) Two Mile Creek Bridge;

Asbestos Inspection Report FHWA-WFLHD Projects: MT PHILLIPS 201(1), MT SWEETGRASS 210(1), MT

STILLWATER 207(1), MT DOT 569(3)

Indoor/Outdoor Environmental, LLC o MT Stillwater 207(1) Allen Grade Creek Bridge; and o MT DOT 569(3) California Creek Bridge.

FHWA-WFLHD Project No: MT Phillips 201(1), Dodson South Canal Bridge Indoor/Outdoor Environmental Project No. 002-490.1

NON-ASBESTOS-CONTAINING MATERIALS

� The subject structure is a wood timber bridge with wooden piers and abutments, asphalt over a wooden deck, and a galvanized steel guard rail with wood posts (Photographs 1 and 2).

� No Asbestos was detected in samples of the following homogeneous materials suspected to contain asbestos in the structure, thus, the Following Materials Are Not Asbestos-Containing Materials and No asbestos abatement activities are required to remove or otherwise impact the following materials (see summary Table 1):

o M18.1: Asphalt on Bridge Deck: This material was located on the Bridge Deck

(Photograph 3).

o M18.2: Asphalt Patch Material (fine grained, light grey): This material is located in patches on the Bridge Deck (Photograph 4).

� Possible hidden suspect asbestos-containing materials that was not encountered during the inspection but might be encountered during demolition include:

o Felt (Tar paper), which might be between components such as under the deck over timbers or piers.

� Note that none of this material was encountered on the structure.

� Asbestos sample locations and results summarized in Table 1, the sample laboratory analysis report and chain of custody are in Attachment 1, and sample locations are listed in the chain of custody.

FHWA-WFLHD Project No: MT Sweetgrass 910(1) Miller Creek Bridge Indoor/Outdoor Environmental Project No. 002-490.2

NON-ASBESTOS-CONTAINING MATERIALS

� The subject structure is a wood timber framed bridge with wood piers and abutments, with a gravel road surface over a wooden deck with intermittent steel plates, wood rails and posts (Photographs 5 and 6).

Materials and No asbestos abatement activities are required to remove or otherwise impact the following materials (see summary Table 2):

o M22.1: Coating (black): This material was located on rail posts and galvanized caps and posts around the abutment (Photograph 7).

STILLWATER 207(1), MT DOT 569(3)

o Felt (Tar paper), which might be between components such as under the deck over

� Asbestos sample locations and results summarized in Table 2, the sample laboratory analysis

FHWA-WFLHD Project No: MT Sweetgrass 910(1) Two Mile Creek Bridge Indoor/Outdoor Environmental Project No. 002-490.3 � The subject structure is a steel truss bridge for the main truss span supported by 2 concrete pedestal abutments at each end, with two wood timber framed ramps at each end, abutments under the ramps consisting of concrete piers (6) against wood timbers, with exposed wood under intermittent steel plates, wooded rails and posts (Photographs 8 and 9).

Materials and No asbestos abatement activities are required to remove or otherwise impact the following materials: See summary Table 3):

o M16.1: Concrete (grey): This material was located in pedestal-like concrete abutments at each end of the main truss span (Photographs 9 and 10).

o M16.2: Concrete (grey): This material is located in concrete piles supporting wood timber abutments under the ramps at each end of the structure (Photograph 11).

o M22.1: Coating (black): This material was located on rail posts (Photograph 12).

o Felt (Tar paper), which might be between components such as under the deck over

� Asbestos sample locations and results summarized in Table 3, the sample laboratory analysis

FHWA-WFLHD Project No: MT Stillwater 207(1) Allen Grade Creek Bridge Indoor/Outdoor Environmental Project No. 002-490.4 � The subject structure is a wood timber framed bridge with wood piers, concrete abutments, with a gravel road surface over a wooden deck with an intermittent thin layer of asphaltic material, steel guard rails and steel posts (Photograph 13).

STILLWATER 207(1), MT DOT 569(3)

Materials and No asbestos abatement activities are required to remove or otherwise impact the following materials (see summary Table 4):

o M15.1: Felt (black tarpaper): This material was located between different components, including between wood timbers and the concrete abutments, and above timbers below the deck (Photograph 14).

o M16.1: Concrete (grey): This material was located on the west abutment.

o M16.2: Concrete (grey): This material is located on patch on top run of west abutment.

o M16.3: Concrete (grey): This material was located on east abutment (Photograph 14).

o M16.4: Concrete Blocks: This material was located on retaining wings North and South of East Abutment (Photograph 14).

o M18.1: Asphaltic Residue (black): This material was in an intermittent thin layer scattered on the deck (Photograph 16).

� Asbestos sample locations and results summarized in Table 4, the sample laboratory analysis

FHWA-WFLHD Project No: MT DOT 569(3) California Creek Bridge Indoor/Outdoor Environmental Project No. 002-490.5 � The subject structure is a wood timber framed bridge with wood piers and abutments, with an asphalt road surface over a wooden deck, wood rails and posts (Photograph 17).

� No Asbestos was detected in samples of the following homogeneous materials suspected to contain asbestos in the structure, thus, the Following Materials Are Not Asbestos-Containing Materials and No asbestos abatement activities are required to remove or otherwise impact the following materials (see summary Table 5):

o M18.1: Asphalt (black-course grain): This material is an old coarser asphalt on the road bed in contact with the wood deck (Photograph 18).

o M18.2: Asphalt (black – smaller grain): This material is newer smaller grain asphalt on the surface of the bridge (Photograph 18).

o M18.3: Road Tar: This material was material dripping from timbers under the bridge (Photograph 19).

STILLWATER 207(1), MT DOT 569(3)

o Felt (Tar paper), which might be between components such as under the deck over

� Asbestos sample locations and results summarized in Table 5, the sample laboratory analysis

ASBESTOS SURVEY METHODS

� For worker and occupant protection, and clean up and disposal requirements, I/O collected bulk samples of suspect asbestos-containing materials to establish asbestos content in materials to be impacted by the proposed renovation, demolition or other project.

� Bulk material samples were collected from locations that represented typical configurations of each of several homogeneous materials observed in the structure that was suspected to contain asbestos. The samples were submitted for asbestos analysis to an accredited asbestos analytical laboratory. Some homogeneous materials might have consisted of multiple layers that were themselves suspect ACMs, such as gypsum wallboard with suspected ACM tape, joint compound, and texture. As a consequence, each layer was analyzed by the laboratory separately (additionally, composite analysis was performed on any positive gypsum wallboard, tape and/or joint compound). Homogeneous material identifications, descriptions, locations and the number of samples collected are shown in the Chain of Custody in the sample laboratory report (Attachment 1), which also contains detailed, layer-by-layer sample analytical results.

� Pursuant to MDEQ requirements, the samples were analyzed by a NVLAP certified laboratory. Material sample descriptions, locations, laboratory results are summarized in Table 1.

o The asbestos analytical laboratory was:

SanAir Technologies Laboratory, Inc.

1551 Oakbridge Drive Suite B Powhatan, VA 23139 804-897-1177, 888-895-1177 www.sanair.com

� Mr. Frantz, a Montana Department of Environmental Quality (MDEQ) accredited asbestos inspector, performed the following activities, as applicable, when he conducted the inspection, pursuant to US EPA and MDEQ guidelines:

1. Visually inspect the areas to be impacted by the project to identify the locations of all suspect ACM.

2. Touch all suspected ACM to determine whether they were friable.

STILLWATER 207(1), MT DOT 569(3)

3. Collect at least three (3) bulk samples from each suspected ACM that was not assumed to be ACM in a statistically random manner that was representative of the material.

4. Collect bulk samples from each Surfacing Material that was not assumed to be ACM in a statistically random manner that was representative of the surfacing material as follows:

a. At least three bulk samples were collected from each surfacing material area that was 1,000 ft2 or less.

b. At least five bulk samples were collected from each surfacing material area that was greater than 1,000 ft2 but less than or equal to 5,000 ft2.

c. At least seven bulk samples were collected from each surfacing material area that was greater than 5,000 ft2.

ASBESTOS REGULATION OVERVIEW

� Construction activities (e.g., demolition, renovation) involving the disturbance of asbestos-containing materials are regulated by at least three jurisdictions:

o EPA and MDEQ: The U.S. Environmental Protection Agency (EPA) and the Montana

Department of Environmental Quality (MDEQ) define an asbestos-containing material (ACM) as a material containing greater than 1.0% (>1%) asbestos by weight, that is, EPA and MDEQ do not consider a material to be an ACM if it only contains one percent or less (<1%) asbestos by weight. In most situations, MDEQ administers the EPA’s National Emission Standards for Hazardous Air Pollutants (NESHAP) (40 CFR Part 61, Subpart M) in Montana, Administrative Rules of Montana (ARM 17.74 Subchapter 3), which regulates certain activities including but not limited to inspection for Asbestos, and the transportation, removal and disposal of ACM.

o OSHA: Any construction-type activity that may disturb a material with detectable asbestos (at any concentration) must be performed in accordance with applicable provisions of the (U.S. Department of Labor) Occupational Safety and Health Administration (OSHA) Asbestos in Construction Standard (29 CFR 1926.1101). While some provisions of the OSHA Asbestos in Construction Standard apply only to materials >1% asbestos, some provisions apply to activities impacting materials that contain any amount of asbestos, even trace amounts (<1%), including construction, alteration, repair, maintenance, or renovation of structures, substrates, or portions thereof, that contain asbestos.

o EPA, MDEQ and OSHA require asbestos inspections prior to disturbing materials suspected to contain asbestos.

LIMITATIONS

This report was prepared at the request of the client, and is based on site observations, interviews, reports, laboratory results of samples collected during this survey, and professional experience. The conclusions and recommendations in this report are professional opinions based

STILLWATER 207(1), MT DOT 569(3)

solely upon said observations, gathered historical information, experience, and interpretations of laboratory analyses as described in this report.

This report has been prepared to provide information concerning the potential for exposures to the specific materials, or information about site environmental parameters described in this report, and includes observations of activities or processes that were observed during site visits, or gathered from other sources. As such, it is not possible to identify or quantify exposures or environmental parameters other than those specifically addressed during the assessment.

The opinions and recommendations I/O has presented herein are for the exclusive use of the client. The scope of services performed by Indoor/Outdoor Environmental, LLC may not be appropriate to satisfy the needs of other users, and any use or re-use of this document, or the findings presented herein, is at the sole risk of the user.

The opinions presented herein apply to the site conditions existing at the time of the investigation.

Therefore, opinions and recommendations may not apply to future conditions that may exist at the site, which we have not had the opportunity to evaluate. New information, including new information about past conditions, could change the interpretations, conclusions and recommendations presented herein.

The conclusions and recommendations in this report do not carry the weight of law, and are freely offered to the client as professional advice. The client may choose to form other conclusions, or follow courses of action other than those recommended in this report. I/O is not responsible for actions or inactions that result from clients either following or not following recommendations in this report.

I/O did not conduct intrusive or destructive inspecting or sampling at the site, and therefore, I/O cannot draw any firm conclusions regarding the presence, absence, or magnitude of hazardous materials, mold growth, or other risk factors in areas that could not be observed. I/O has made every effort to communicate with clients during the investigation, discuss investigative options, and explain limitations in data or observations in the report. I/O invites clients to provide any information that might assist in better understanding conditions at the site.

UNCONDITIONAL RELEASE AND LIMITATION OF LIABILITY

The client understands that I/O and the laboratory that analyzed samples are not insurers, and that the inspection and this report shall not be construed as a guarantee or warranty of the adequacy, performance, or condition of any structure, item, or system at the subject property.

The client thereby releases and exempts I/O, the laboratory, and our respective agents and employees of and from all liability and responsibility for the cost of repairing or replacing any unreported defect or deficiency, and for any consequential damage, property damage or personal injury of any nature. In the event that I/O, the laboratory, or our respective agents or employees are found liable due to breach of contract, breach of warranty, negligent misrepresentation, negligent hiring or any other theory of liability, then the cumulative

STILLWATER 207(1), MT DOT 569(3)

aggregate total liability of us, the laboratory, and our respective agents and employees shall be limited to a sum equal to the amount of the fee paid by you for the inspection and report.

We trust this report meets your requirements at this time. Please feel free to contact us to discuss this report, or if we can be of further assistance. We would be happy to assist you further on this project, at your request.

Respectfully Submitted, Robert P. Frantz Accredited Asbestos Inspector, Contractor-Supervisor, Project Designer and Management Planner State of Montana ID# MTA2640-IN, CS, PD and MP Expiration Dates: January 5-7, 2017

Tables 1 - 5: Sample List, Locations, and Sample Results

Attachment 1: Asbestos Sample Laboratory Reports

Attachment 2: Site Photographs

Table 1: Sample List, Locations, and Sample Results MT Phillips 201(1) Dodson South Canal Bridge

April 13, 2016 Samples Project # 002-490.1

Photo Number

M18.1 A-C Asphalt (Black) On Bridge Deck 2,3

M18.2 A-C Asphalt Patch Material (Light Grey-Black, Finer Grained)

On Bridge Deck 4None Detected

Sample ID MATERIAL LOCATION/NOTES Asbestos

Percentage

None Detected

Table 2: Sample List, Locations, and Sample Results MT Sweetgrass 910(1) Miller Creek Bridge

April 14, 2016 Samples Project # 002-490.2

Photo Number Class2

M22.1 A-C Coating (black) On rail posts, galvanized post caps and posts around abutment

6, 7

Sample ID MATERIAL LOCATION/NOTES Asbestos

Table 3: Sample List, Locations, and Sample Results MT Sweetgrass 910(1) Two Mile Creek Bridge April 14, 2016 Samples

Project # 002-490.3

Photo Number Class2

M16.1 A-C Concrete (grey) Concrete Pedestal Abutments (2) under main span

9, 10

M16.2 A-C Concrete (grey) Concrete Piles in Ramp Abutments, supporting timber retaining walls (6)

M22.1 A-C Coating (black) On rail posts 12None Detected

None Detected

Sample ID MATERIAL LOCATION/NOTES Asbestos

Table 4: Sample List, Locations, and Sample Results MT Stillwater 207(1) Allen Grade Creek Bridge

April 14, 2016 Samples Project # 002-490.4

Photo Number Class2

M15.1 A-C Felt (Black tarpaper) Between Timbers, Concrete and Deck

M16.1 A-C Concrete (grey) West Abutment

M16.2 A-C Concrete (grey) Patch on top of West Abutment Face

M16.3 A-C Concrete East Abutment 15

M16.4 A-C Concrete Blocks Retaining Wall Wings North and South of East Abutment

M18.1 A-C Asphalt Residue on Deck (Black)

Scattered on the Deck 16

Sample ID MATERIAL LOCATION/NOTES Asbestos

Percentage

None Detected

None Detected

None Detected

None Detected

Table 5: Sample List, Locations, and Sample Results MT DOT 569(3) California Creek Bridge April 15, 2016 Samples

Project # 002-490.5

Photo Number Class2

M18.1 A-C Asphalt (Black - coarse grain) Old Basal Layer of Asphalt on Bridge Deck 18

M18.2 A-C Asphalt (Black -smaller grain) Surface Layer of Asphalt 18

M18.3 A-C Road Tar (Black) Accumulation on Timbers 19

None Detected

None Detected

Sample ID MATERIAL LOCATION/NOTES Asbestos

ATTACHMENT 1: ASBESTOS SAMPLE LABORATORY REPORTS

SanAir Technologies LaboratorySanAir Technologies Laboratory

Analysis Report prepared for

Indoor Outdoor Environmental, LLC

Report Date: 4/19/2016 Project Name: MT Phillips 201 (1) Project #: 002- 490.1 SanAir ID#: 16012793

804.897.1177 www.sanair.com804.897.1177 www.sanair.com

SanAir Technologies Laboratory, Inc.

1551 Oakbridge Drive, Suite B, Powhatan, VA 23139

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

April 19, 2016

SanAir ID # 16012793 Project Name: MT Phillips 201 (1) Project Number: 002- 490.1

Dear Robert Frantz, We at SanAir would like to thank you for the work you recently submitted. The 6 sample(s) were received on Monday, April 18, 2016 via FedEx. The final report(s) is enclosed for the following sample(s): M18.1A, M18.1B, M18.1C, M18.2A, M18.2B, M18.2C.

These results only pertain to this job and should not be used in the interpretation of any other job.

This report is only complete in its entirety. Refer to the listing below of the pages included in a complete final report.

Sincerely, Sandra Sobrino Asbestos & Materials Laboratory Manager SanAir Technologies Laboratory

Final Report Includes:

- Cover Letter

- Analysis Pages

- Disclaimers and Additional Information sample conditions:

6 sample(s) in Good condition

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Name:

Address:

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

Project Number:

P.O. Number:

Project Name:

002- 490.1

MT Phillips 201 (1)

Collected Date:

Received Date:

Report Date:

Analyst:

4/13/2016

4/18/2016 8:50:00 AM

4/19/2016 9:52:01 AM

Tallert, Jonathan

Asbestos Bulk PLM EPA 600/R-93/116 Stereoscopic Components Asbestos

SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.1A / 16012793-001 Black 100% Other None Detected Asphalt On Bridge Deck Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.1B / 16012793-002 Black 100% Other None Detected Asphalt On Bridge Deck Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.1C / 16012793-003 Black 100% Other None Detected Asphalt On Bridge Deck Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.2A / 16012793-004 Black 100% Other None Detected Asphalt Patch Material Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.2B / 16012793-005 Black 100% Other None Detected Asphalt Patch Material Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.2C / 16012793-006 Black 100% Other None Detected Asphalt Patch Material Non-Fibrous

Heterogeneous

16012793 SanAir ID Number

FINAL REPORT

Certification

Analyst: Approved Signatory:

Analysis Date: 4/19/2016 Date: 4/19/2016 Page 1 of 1

Disclaimer

The final report cannot be reproduced, except in full, without written authorization from SanAir.

Fibers smaller than 5 microns cannot be seen with this method due to scope limitations. The accuracy of the results is dependent upon the client’s sampling procedure and information provided to the laboratory by the client. SanAir assumes no responsibility for the sampling procedure and will provide evaluation reports based solely on the sample and information provided by the client. This report may not be used by the client to claim product endorsement by NVLAP or any other agency of the U.S. government.

For NY state samples, method EPA 600/M4-82-020 is performed.

Polarized- light microscopy is not consistently reliable in detecting asbestos in floor covering and similar non-friable organically bound materials. Quantitative transmission electron microscopy is currently the only method that can be used to determine if this material can be considered or treated as non-asbestos containing.

NY ELAP lab ID 11983 prepared for

Indoor Outdoor Environmental, LLC

Report Date: 4/19/2016 Project Name: Miller CK Bridge Project #: 002-490.2 SanAir ID#: 16012804

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

April 19, 2016

SanAir ID # 16012804 Project Name: Miller CK Bridge Project Number: 002-490.2

Dear Robert Frantz, We at SanAir would like to thank you for the work you recently submitted. The 3 sample(s) were received on Monday, April 18, 2016 via FedEx. The final report(s) is enclosed for the following sample(s): M22.1A, M22.1B, M22.1C.

These results only pertain to this job and should not be used in the interpretation of any other job.

This report is only complete in its entirety. Refer to the listing below of the pages included in a complete final report.

Sincerely, Sandra Sobrino Asbestos & Materials Laboratory Manager SanAir Technologies Laboratory

Final Report Includes:

- Cover Letter

- Analysis Pages

- Disclaimers and Additional Information

3 sample(s) in Good condition

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Name:

Address:

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

Project Number:

P.O. Number:

Project Name:

002-490.2

Miller CK Bridge

Collected Date:

Received Date:

Report Date:

Analyst:

4/14/2016

4/18/2016 8:50:00 AM

4/19/2016 9:37:57 AM

Tallert, Jonathan

Asbestos Bulk PLM EPA 600/R-93/116 Stereoscopic Components Asbestos

SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M22.1A / 16012804-001 Black 100% Other None Detected Coating On Rail Posts, 12"x12" Non-Fibrous Posts Around Abutment Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M22.1B / 16012804-002 Black 100% Other None Detected Coating On Rail Posts, 12"x12" Non-Fibrous Posts Around Abutment Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M22.1C / 16012804-003 Black 100% Other None Detected Coating On Rail Posts, 12"x12" Non-Fibrous Posts Around Abutment Homogeneous

16012804 SanAir ID Number

FINAL REPORT

Certification

Analysis Date: 4/19/2016 Date: 4/19/2016 Page 1 of 1 accuracy of the results is dependent upon the client’s sampling procedure and information provided to the laboratory by the client. SanAir assumes no responsibility for the sampling procedure and will provide evaluation reports based solely on the sample and information provided by the client. This report may not be used by the client to claim product endorsement by NVLAP or any other agency of the U.S. government.

For NY state samples, method EPA 600/M4-82-020 is performed.

Polarized- light microscopy is not consistently reliable in detecting asbestos in floor covering and similar non-friable organically bound materials. Quantitative transmission electron microscopy is currently the only method that can be used to determine if this material can be considered or prepared for

Indoor Outdoor Environmental, LLC

Report Date: 4/19/2016 Project Name: Two Mile CK Bridge Project #: 002-490.3 SanAir ID#: 16012801

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

April 19, 2016

SanAir ID # 16012801 Project Name: Two Mile CK Bridge Project Number: 002-490.3

Dear Robert Frantz, We at SanAir would like to thank you for the work you recently submitted. The 9 sample(s) were received on Monday, April 18, 2016 via FedEx. The final report(s) is enclosed for the following sample(s): 16.1A, 16.1B, 16.1C, 16.2A, 16.2B, 16.2C, M22.1A, M22.1B, M22.1C.

These results only pertain to this job and should not be used in the interpretation of any other job.

This report is only complete in its entirety. Refer to the listing below of the pages included in a complete final report.

Sincerely, Sandra Sobrino Asbestos & Materials Laboratory Manager SanAir Technologies Laboratory

Final Report Includes:

- Cover Letter

- Analysis Pages

- Disclaimers and Additional Information

9 sample(s) in Good condition

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Name:

Address:

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

Project Number:

P.O. Number:

Project Name:

002-490.3

Two Mile CK Bridge

Collected Date:

Received Date:

Report Date:

Analyst:

4/14/2016

4/18/2016 8:50:00 AM

4/19/2016 12:31:21 PM

Fleming, Christopher

Asbestos Bulk PLM EPA 600/R-93/116 Stereoscopic Components Asbestos

SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers 16.1A / 16012801-001 Grey 100% Other None Detected Concrete Pedistals East- S. Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers 16.1B / 16012801-002 Grey 100% Other None Detected Concrete Pedistals East- N. Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers 16.1C / 16012801-003 Grey 100% Other None Detected Concrete Pedistals West- S. Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers 16.2A / 16012801-004 Grey 100% Other None Detected Concrete Piles In Abatement Non-Fibrous Retaining Treated Pillars East-S Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers 16.2B / 16012801-005 Grey 100% Other None Detected Concrete Piles In Abaitment Non-Fibrous Retaining Treated Pillars East-C Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers 16.2C / 16012801-006 Grey 100% Other None Detected Concrete Piles In Abaitment Non-Fibrous Retaining Treated Pillars West-N Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M22.1A / 16012801-007 Black 100% Other None Detected Coating On Rail Posts Non-Fibrous

Homogeneous

16012801 SanAir ID Number

FINAL REPORT

Certification

Analysis Date: 4/19/2016 Date: 4/19/2016 Page 1 of 2

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Name:

Address:

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

Project Number:

P.O. Number:

Project Name:

002-490.3

Two Mile CK Bridge

Collected Date:

Received Date:

Report Date:

Analyst:

4/14/2016

4/18/2016 8:50:00 AM

4/19/2016 12:31:21 PM

Fleming, Christopher

Asbestos Bulk PLM EPA 600/R-93/116 Stereoscopic Components Asbestos

SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M22.1B / 16012801-008 Black 100% Other None Detected Coating On Rail Posts Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M22.1C / 16012801-009 Black 100% Other None Detected Coating On Rail Posts Non-Fibrous

Homogeneous

16012801 SanAir ID Number

FINAL REPORT

Certification

Analysis Date: 4/19/2016 Date: 4/19/2016 Page 2 of 2 accuracy of the results is dependent upon the client’s sampling procedure and information provided to the laboratory by the client. SanAir assumes no responsibility for the sampling procedure and will provide evaluation reports based solely on the sample and information provided by the client. This report may not be used by the client to claim product endorsement by NVLAP or any other agency of the U.S. government.

For NY state samples, method EPA 600/M4-82-020 is performed.

Polarized- light microscopy is not consistently reliable in detecting asbestos in floor covering and similar non-friable organically bound materials. Quantitative transmission electron microscopy is currently the only method that can be used to determine if this material can be considered or prepared for

Indoor Outdoor Environmental, LLC

Report Date: 4/19/2016 Project Name: Allen Grade Bridge Project #: 002-490.4 SanAir ID#: 16012798

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

April 19, 2016

SanAir ID # 16012798 Project Name: Allen Grade Bridge Project Number: 002-490.4

Dear Robert Frantz, We at SanAir would like to thank you for the work you recently submitted. The 18 sample(s) were received on Monday, April 18, 2016 via FedEx. The final report(s) is enclosed for the following sample(s): M16.1A, M16.1B, M16.1C, M16.2A, M16.2B, M16.2C, M16.3A, M16.3B, M16.3C, M16.4A, M16.4B, M16.4C, M15.1A, M15.1B, M15.1C, M18.1A, M18.1B, M18.1C.

These results only pertain to this job and should not be used in the interpretation of any other job.

This report is only complete in its entirety. Refer to the listing below of the pages included in a complete final report.

Sincerely, Sandra Sobrino Asbestos & Materials Laboratory Manager SanAir Technologies Laboratory

Final Report Includes:

- Cover Letter

- Analysis Pages

- Disclaimers and Additional Information

18 sample(s) in Good condition

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Name:

Address:

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

Project Number:

P.O. Number:

Project Name:

002-490.4

Allen Grade Bridge

Collected Date:

Received Date:

Report Date:

Analyst:

4/14/2016

4/18/2016 8:50:00 AM

4/19/2016 1:24:40 PM

Rutter, Amber

Asbestos Bulk PLM EPA 600/R-93/116 Stereoscopic Components Asbestos

SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.1A / 16012798-001 Grey 100% Other None Detected Concrete West Abaitment S Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.1B / 16012798-002 Grey 100% Other None Detected Concrete West Abaitment Cen Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.1C / 16012798-003 Grey 100% Other None Detected Concrete West Abaitment N Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.2A / 16012798-004 Grey 100% Other None Detected Concrete- Patch On Top Few Non-Fibrous Inches Of West Abaintment S Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.2B / 16012798-005 Grey 100% Other None Detected Concrete- Patch On Top Few Non-Fibrous Inches Of West Abaintment Cen Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.2C / 16012798-006 Grey 100% Other None Detected Concrete- Patch On Top Few Non-Fibrous Inches Of West Abaintment N Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.3A / 16012798-007 Grey 100% Other None Detected East Abaitment SW Non-Fibrous

Heterogeneous

16012798 SanAir ID Number

FINAL REPORT

Certification

Analysis Date: 4/19/2016 Date: 4/19/2016 Page 1 of 3

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Name:

Address:

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

Project Number:

P.O. Number:

Project Name:

002-490.4

Allen Grade Bridge

Collected Date:

Received Date:

Report Date:

Analyst:

4/14/2016

4/18/2016 8:50:00 AM

4/19/2016 1:24:40 PM

Rutter, Amber

Asbestos Bulk PLM EPA 600/R-93/116 Stereoscopic Components Asbestos

SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.3B / 16012798-008 Grey 100% Other None Detected East Abaitment S Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.3C / 16012798-009 Grey 100% Other None Detected East Abaitment N Non-Fibrous

Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.4A / 16012798-010 Grey 100% Other None Detected Concrete Blocks- Retaining Non-Fibrous Wings N&S Of East Abatement S Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.4B / 16012798-011 Grey 100% Other None Detected Concrete Blocks- Retaining Non-Fibrous Wings N&S Of East Abatement S Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M16.4C / 16012798-012 Grey 100% Other None Detected Concrete Blocks- Retaining Non-Fibrous Wings N&S Of East Abatement N Heterogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M15.1A / 16012798-013 Black 70% Cellulose 30% Other None Detected Felt Between Timbers & Concrete Fibrous & Deck Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M15.1B / 16012798-014 Black 70% Cellulose 30% Other None Detected Felt Between Timbers & Concrete Fibrous & Deck Homogeneous

16012798 SanAir ID Number

FINAL REPORT

Certification

Analysis Date: 4/19/2016 Date: 4/19/2016 Page 2 of 3

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Name:

Address:

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

Project Number:

P.O. Number:

Project Name:

002-490.4

Allen Grade Bridge

Collected Date:

Received Date:

Report Date:

Analyst:

4/14/2016

4/18/2016 8:50:00 AM

4/19/2016 1:24:40 PM

Rutter, Amber

Asbestos Bulk PLM EPA 600/R-93/116 Stereoscopic Components Asbestos

SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M15.1C / 16012798-015 Black 70% Cellulose 30% Other None Detected Felt Between Timbers & Concrete Fibrous & Deck Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.1A / 16012798-016 Black 2% Cellulose 98% Other None Detected Asphalt Residue On Deck Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.1B / 16012798-017 Black 2% Cellulose 98% Other None Detected Asphalt Residue On Deck Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.1C / 16012798-018 Black 2% Cellulose 98% Other None Detected Asphalt Residue On Deck Non-Fibrous

Homogeneous

16012798 SanAir ID Number

FINAL REPORT

Certification

Analysis Date: 4/19/2016 Date: 4/19/2016 Page 3 of 3 accuracy of the results is dependent upon the client’s sampling procedure and information provided to the laboratory by the client. SanAir assumes no responsibility for the sampling procedure and will provide evaluation reports based solely on the sample and information provided by the client. This report may not be used by the client to claim product endorsement by NVLAP or any other agency of the U.S. government.

For NY state samples, method EPA 600/M4-82-020 is performed.

Polarized- light microscopy is not consistently reliable in detecting asbestos in floor covering and similar non-friable organically bound materials. Quantitative transmission electron microscopy is currently the only method that can be used to determine if this material can be considered or prepared for

Indoor Outdoor Environmental, LLC

Report Date: 4/19/2016 Project Name: California CK Bridge Project #: 002-490.5 SanAir ID#: 16012796

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

April 19, 2016

SanAir ID # 16012796 Project Name: California CK Bridge Project Number: 002-490.5

Dear Robert Frantz, We at SanAir would like to thank you for the work you recently submitted. The 9 sample(s) were received on Monday, April 18, 2016 via FedEx. The final report(s) is enclosed for the following sample(s): M18.1A, M18.1B, M18.1C, M18.2A, M18.2B, M18.2C, M18.3A, M18.3B, M18.3C.

These results only pertain to this job and should not be used in the interpretation of any other job.

This report is only complete in its entirety. Refer to the listing below of the pages included in a complete final report.

Sincerely, Sandra Sobrino Asbestos & Materials Laboratory Manager SanAir Technologies Laboratory

Final Report Includes:

- Cover Letter

- Analysis Pages

- Disclaimers and Additional Information

9 sample(s) in Good condition

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Name:

Address:

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

Project Number:

P.O. Number:

Project Name:

002-490.5

California CK Bridge

Collected Date:

Received Date:

Report Date:

Analyst:

4/15/2016

4/18/2016 8:50:00 AM

4/19/2016 12:20:13 PM

Toth, Elizabeth

Asbestos Bulk PLM EPA 600/R-93/116 Stereoscopic Components Asbestos

SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.1A / 16012796-001 Black 100% Other None Detected Asphalt- Asphalt In Bed Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.1B / 16012796-002 Black 100% Other None Detected Asphalt- Asphalt In Bed Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.1C / 16012796-003 Black 100% Other None Detected Asphalt- Asphalt In Bed Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.2A / 16012796-004 Black 100% Other None Detected Asphalt- Surface Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.2B / 16012796-005 Black 100% Other None Detected Asphalt- Surface Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.2C / 16012796-006 Black 100% Other None Detected Asphalt- Surface Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.3A / 16012796-007 Black 100% Other None Detected Road Tar- Accum. On Timbers Non-Fibrous

Homogeneous

16012796 SanAir ID Number

FINAL REPORT

Certification

Analysis Date: 4/19/2016 Date: 4/19/2016 Page 1 of 2

804.897.1177 Toll Free: 888.895.1177 Fax: 804.897.0070

Web: http://www.sanair.com E-mail: iaq@sanair.com

Name:

Address:

Indoor Outdoor Environmental, LLC 1632 Colorado Gulch Drive Helena, MT 59601

Project Number:

P.O. Number:

Project Name:

002-490.5

California CK Bridge

Collected Date:

Received Date:

Report Date:

Analyst:

4/15/2016

4/18/2016 8:50:00 AM

4/19/2016 12:20:13 PM

Toth, Elizabeth

Asbestos Bulk PLM EPA 600/R-93/116 Stereoscopic Components Asbestos

SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.3B / 16012796-008 Black 100% Other None Detected Road Tar- Accum. On Timbers Non-Fibrous

Homogeneous

Stereoscopic Components Asbestos SanAir ID / Description Appearance % Fibrous % Non-Fibrous Fibers M18.3C / 16012796-009 Black 100% Other None Detected Road Tar- Accum. On Timbers Non-Fibrous

Homogeneous

16012796 SanAir ID Number

FINAL REPORT

Certification

Analysis Date: 4/19/2016 Date: 4/19/2016 Page 2 of 2 accuracy of the results is dependent upon the client’s sampling procedure and information provided to the laboratory by the client. SanAir assumes no responsibility for the sampling procedure and will provide evaluation reports based solely on the sample and information provided by the client. This report may not be used by the client to claim product endorsement by NVLAP or any other agency of the U.S. government.

For NY state samples, method EPA 600/M4-82-020 is performed.

Polarized- light microscopy is not consistently reliable in detecting asbestos in floor covering and similar non-friable organically bound materials. Quantitative transmission electron microscopy is currently the only method that can be used to determine if this material can be considered or

Indoor/Outdoor Environmental, LLC Page

ATTACHMENT 2: SITE PHOTOGRAPHS

Photograph 1: View looking east at the Dodson South Canal Bridge.

Photograph 2: View of the Dodson South Canal Bridge deck, showing asphalt and patches.

Photograph 3: Dodson South Canal Bridge Asphalt material M18.1, the main asphalt on the bridge, taken from the bridge deck.

Photograph 4: Dodson South Canal Bridge Asphalt material M18.2, patch material on the bridge, taken from the bridge deck.

Photograph 5: View looking north toward the Miller Creek Bridge.

Photograph 6: View looking east toward the Miller Creek Bridge, showing suspect material M22.1, a thick black coating on the rail posts.

Photograph 7: Miller Creek Bridge suspect material M22.1, a thick black coating on the rail posts.

Photograph 8: View of the east end of the south truss on the Two Mile Creek Bridge.

Photograph 9: View of the east abutment under the center span of the Two Mile Creek Bridge.

Photograph 10: Two Mile Creek Bridge suspect material M16.1, concrete in pedestal-like abutments at each end of the main truss span.

Photograph 11: Two Mile Creek Bridge suspect material M16.2, concrete piles supporting wood timber abutments under the ramps at each end of the structure.

Photograph 12: Two Mile Creek Bridge suspect material M22.1, a black coating on rail posts.

Photograph 13: View of the Allen Grade Bridge, looking east.

Photograph 14: Allen Grade Bridge suspect material M15.1, black felt (tar paper) material between wood components and between timbers and concrete.

Photograph 15: Allen Grade Bridge suspect material M16.4, preformed concrete blocks forming retaining walls north and south of the concrete east abutment (to the right of the block), which was suspect material M16.3.

Photograph 16: Allen Grade Bridge suspect material M18.1, an intermittent this layer of asphaltic residue on the wood bridge deck.

Photograph 17: View of the California Creek Bridge looking north.

Photograph 18: California Creek Bridge suspect material M18.1, an older coarser layer of asphalt accessible along the edges, and suspect material 18.2, a newer asphalt layer on the surface.

Photograph 19: California Creek Bridge suspect material M18.3, black tar-like material dripping from timbers and the abutments.