A22 - Attachment J-7 - Statement of Work Appendix 2 - ESA Abatement Documents - 25 Oct. 2023.pdf

SECTION 01 10 00.00 20

STATEMENT OF WORK – PROJECT SPECIFIC REQUIREMENTS

APPENDIX 2 – ESA/ABATEMENT DATA DOCUMENTS

25 October 2023

Approved by:

Technical Manager Roshanak Kalantari

Report for:

Chad Siems Shive-Hattery 2839 Northgate Dr.

Iowa City, IA 52245

Regarding:

Eurofins EPK Built Environment Testing, LLC Project: ESA; Coralville Reservoir

EML ID: 3341868

All samples were received in acceptable condition unless noted in the Report Comments portion in the body of the report. Due to the nature of the analyses performed, field blank correction of results is not applied. The results relate only to the samples as received and tested. Information supplied by the client which can affect the validity of results: sample air volume.

Eurofins EPK Built Environment Testing, LLC ("the Company"), a member of the Eurofins Built Environment Testing group of companies, shall have no liability to the client or the client's customer with respect to decisions or recommendations made, actions taken or courses of conduct implemented by either the client or the client's customer as a result of or based upon the Test Results.

In no event shall the Company be liable to the client with respect to the Test Results except for the Company's own willful misconduct or gross negligence nor shall the Company be liable for incidental or consequential damages or lost profits or revenues to the fullest extent such liability may be disclaimed by law, even if the Company has been advised of the possibility of such damages, lost profits or lost revenues. In no event shall the Company's liability with respect to the Test Results exceed the amount paid to the Company by the client therefor.

Dates of Analysis:

Spore trap analysis: 08-04-2023

Service SOPs: Spore trap analysis (EM-MY-S-1038) AIHA-LAP, LLC accredited service, Lab ID #173068

Eurofins EPK Built Environment Testing, LLC's LabServe® reporting system includes automated fail-safes to ensure that all AIHA- LAP, LLC quality requirements are met and notifications are added to reports when any quality steps remain pending.

EMLab ID: 3341868, Page 1 of 3Eurofins EPK Built Environment Testing, LLC

Eurofins EPK Built Environment Testing, LLC 1010 N Central Avenue, Suite 460, Glendale, CA 91202

(800) 651-4802 www.eurofinsus.com/Built Client: Shive-Hattery C/O: Chad Siems Re: ESA; Coralville Reservoir

Date of Sampling: 08-03-2023 Date of Receipt: 08-04-2023 Date of Report: 08-04-2023

SPORE TRAP REPORT: NON-VIABLE METHODOLOGY

Location: 1:

Old visitors ctr 35794644 2:

Comer rm 35794652 3:

2nd Floor 35794656 Comments (see below) None None A Lab ID-Version‡: 16241343-1 16241344-1 16241345-1 Analysis Date: 08/04/2023 08/04/2023 08/04/2023 Sample volume (liters) 75 75 75 Background debris (1-4+)†† 2+ 2+ 2+ raw ct. Count/m3 DL/m3* % raw ct. Count/m3 DL/m3* % raw ct. Count/m3 DL/m3* %

Hyphal fragments 2 27 13 n/a 1 13 13 n/a Pollen 1 13 13 n/a § TOTAL FUNGAL SPORES 8 350 n/a 100 5 230 n/a 100 40 930 n/a 100 Alternaria 3 40 13 4 Ascospores 1 13 13 4 1 13 13 1 Basidiospores 1 13 13 4 1 13 13 6 3 40 13 4 Botrytis Cercospora Chaetomium Cladosporium 6 320 53 92 4 210 53 94 31 810 26 87 Epicoccum 1 13 13 1 Fusarium Oidium Penicillium/Aspergillus types Smuts, Periconia, Myxomycetes 1 13 13 1 Stachybotrys Comments:A) 21 of the raw count Cladosporium spores were present as a single clump.

EMLab ID: 3341868, Page 2 of 3Eurofins EPK Built Environment Testing, LLC

Spore types listed without a count or data entry were not detected during the course of the analysis for the respective sample, indicating a raw count of <1 spore.

The analytical sensitivity is the spores/m^3 divided by the raw count, expressed in spores/m^3, per spore and per sample.

*The detection limit/limit of detection (DL) per cubic meter (m3) has been rounded to two significant figures to reflect analytical precision.

††Background debris indicates the amount of non-biological particulate matter present on the trace (dust in the air) and the resulting visibility for the analyst. It is rated from 1+ (low) to 4+ (high). Counts from areas with 4+ background debris should be regarded as minimal counts and may be higher than reported. It is important to account for samples volumes when evaluating dust levels.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x".

§ Total Fungal Spores has been rounded to two significant figures to reflect analytical precision.

(800) 651-4802 www.eurofinsus.com/Built Client: Shive-Hattery C/O: Chad Siems Re: ESA; Coralville Reservoir

Date of Sampling: 08-03-2023 Date of Receipt: 08-04-2023 Date of Report: 08-04-2023

SPORE TRAP REPORT: NON-VIABLE METHODOLOGY

Location: 4:

Basement 35794649 5:

Outside 35794659 Comments (see below) B C Lab ID-Version‡: 16241346-1 16241347-1 Analysis Date: 08/04/2023 08/04/2023 Sample volume (liters) 75 75 Background debris (1-4+)†† 2+ 2+ raw ct. Count/m3 DL/m3* % raw ct. Count/m3 DL/m3* %

Hyphal fragments 2 27 13 n/a 2 27 13 n/a Pollen § TOTAL FUNGAL SPORES 22 650 n/a 100 160 4,500 n/a 100 Alternaria 3 40 13 6 11 150 13 3 Ascospores 3 40 13 1 Basidiospores 7 93 13 2 Botrytis 1 13 13 < 1 Cercospora 2 27 13 1 Chaetomium Cladosporium 19 610 32 94 130 4,100 31 91 Epicoccum Fusarium 2 27 13 1 Oidium 4 53 13 1 Penicillium/Aspergillus types Stachybotrys Comments:B) 10 of the raw count Cladosporium spores were present as a single clump. C) 71 of the raw count Cladosporium spores were present as a single clump.

EMLab ID: 3341868, Page 3 of 3Eurofins EPK Built Environment Testing, LLC

Spore types listed without a count or data entry were not detected during the course of the analysis for the respective sample, indicating a raw count of <1 spore.

The analytical sensitivity is the spores/m^3 divided by the raw count, expressed in spores/m^3, per spore and per sample.

*The detection limit/limit of detection (DL) per cubic meter (m3) has been rounded to two significant figures to reflect analytical precision.

††Background debris indicates the amount of non-biological particulate matter present on the trace (dust in the air) and the resulting visibility for the analyst. It is rated from 1+ (low) to 4+ (high). Counts from areas with 4+ background debris should be regarded as minimal counts and may be higher than reported. It is important to account for samples volumes when evaluating dust levels.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x".

§ Total Fungal Spores has been rounded to two significant figures to reflect analytical precision.

www.emlabpk.com • info@emlabpk.com Page 1 of 6 EM-MY-R-8485, Rev03, 07.09.2018

Introduction

Molds are a natural and important part of our environment. They are ubiquitous and are found virtually everywhere. Molds produce tiny spores to reproduce. These spores can be found in both indoor and outdoor air and on indoor and outdoor surfaces. When mold spores land on a damp spot, they may begin growing and digesting whatever they are growing on in order to survive, leading to adverse conditions. In response to increasing public concern, a number of government authorities, including the United States EPA, California Department of Health Services and New York City Department of Health, have developed recommendations and guidelines for assessment and remediation of mold. Websites for these organizations can be found at the end of this report.

While it is generally accepted that molds can be allergenic and can lead to adverse health conditions in susceptible people, unfortunately there are no widely accepted or regulated interpretive standards or numerical guidelines for the interpretation of microbial data. The absence of standards often makes interpretation of microbial data difficult and controversial. This report has been designed to provide some basic interpretive information using certain assumptions and facts that have been extracted from a number of peer reviewed texts, such as the American Conference of Governmental Industrial Hygienists (ACGIH). In the absence of standards, the user must determine the appropriateness and applicability of this report to any given situation. Identification of the presence of a particular fungus in an indoor environment does not necessarily mean that the building occupants are or are not being exposed to antigenic or toxic agents.

None of the information contained herein should be construed as medical advice or a call to action for evacuation or remediation. Only a qualified physician should make any decision relative to medical significance.

EMLab P&K did not conduct the site investigation, provide consulting or collect the samples referenced in this report. EMLab P&K’s primary involvement in this project is to provide analytical results for the samples submitted. The data presented in this report are based on the samples and accompanying information provided and represents concentrations at a point in time under the conditions sampled.

EMLab P&K’s standard terms and conditions govern all aspects of this report.

Materials

Please refer to the chain of custody included with this report.

Methods

1. Surface Samples – Swab, Dust, Tape and Bulk Samples Swab, Dust and Tape samples are mounted on a glass slide and observed under a bright field microscope for either Qualitative or Quantitative Examination. A bulk sample is also simultaneously observed under a stereomicroscope to look for signs of any visible discoloration or fungal growth, which is then mounted and observed under a bright field microscope for either Qualitative or Quantitative Examination. The samples are analyzed at a minimum of 200X magnification and up to a 1000X magnification. In the qualitative

Page 2 of 6 EM-MY-R-8485, Rev03, 07.09.2018 examination, the prepared samples are observed for the presence of any structures or skewing of spore distribution that may indicate growth in the sample being analyzed. In the quantitative examination, the mold spores detected in the sample are counted and reported as spores per cm2, spores per gram (or 1000mg), or spores per swab/wipe, etc depending on the sample type. These methodologies do not differentiate between viable and non-viable fungal spores.

2. Air Samples- Spore Trap Device Spore traps are a unique sampling device designed for the rapid collection and analysis of a wide range of airborne particulates, including fungal spores. While analyzing the sample, the analyst takes a number of variables into account to select the proper analytical method to accurately determine the densities of the various spores on the trace. The densities of the debris and the spores on the trace will determine the approach to analyzing the sample. In general, the sample is directly mounted under the microscope and the various airborne particles detected are counted at a minimum of 200X magnification and up to 1000X magnification, with the entire trace (100% of the sample) being analyzed at 200X or 600X.

This method does not differentiate between viable and non-viable fungal spores. This technique does not allow for the differentiation between Aspergillus and Penicillium spores.

Additionally, depending on morphology, other non-distinctive spores are reported in categories such as ascospores or basidiospores. All slides are graded with the following debris scale for data qualification.

Debris Rating Description Interpretation

None No particles detected.

No particulates on slide. The absence of particulates could indicate improper sampling as most air samples typically capture some particles.

<1+ Good visibility. A few particles detected. Reported values are not affected by debris.

1+ Good visibility. No crowding of particles.

2+ Decent visibility. Particles beginning to crowd.

Non-microbial particulates can mask the presence of fungal spores. As a result, actual values could be higher than the numbers reported. Higher debris ratings increase the probability of this bias. 3+ Decent visibility. Particles beginning to crowd.

4+ Poor visibility. Particles beginning to overlap.

Excessive debris detected in the sample. Counts reported may vary drastically and actual values could be higher than the numbers reported. The sample should be collected at a shorter time interval, or other measures taken to reduce the collection of non-microbial debris. In addition, a >4+ rating will only allow for a count from the perimeter of the slide.

>4+ Poor visibility. Particles overlapping.

3. Comments Comments identify issues or events that are relevant to your analytical results. A comment includes information about any peculiar observation or situation encountered while analyzing the sample. In each case, the comments provide significant information vital to the interpretation of the laboratory data.

4. Data Interpretation

Page 3 of 6 EM-MY-R-8485, Rev03, 07.09.2018

According to ACGIH, "Data from individual sampling episodes is often interpreted with respect to baseline data from other environments or the same environment under anticipated low exposure conditions." In the absence of established acceptable exposure limits, it is often necessary to use a comparison standard when interpreting data. In this instance, it will be necessary to sample the suspect area as well as a non-suspect area.

According to ACGIH, “...active fungal growth in indoor environments is inappropriate and may lead to exposure and adverse health effects.”

a. Total Fungal Spores According to ACGIH, “.... differences that can detected with manageable sample sizes are likely to be in 10- fold multiplicative steps (e.g., 100 versus 1000...)”.

Following this logic, if total fungal spores are ten (10) times greater in the sample from a suspect area than in the negative control sample collected from a non-suspect area, then that sample area may be a fungal amplification site.

b. Mycelial Fragments Mycelium is a fungal mass that constitutes the vegetative or living body of a fungus.

Following the same logic above, if total mycelial fragments are ten (10) times greater in the suspect sample than in the negative control, then the sample area is considered to be a fungal amplification site. The presence of mycelial fragments provides evidence of microbial growth.

c. Mycotoxins Molds can produce toxic substances called mycotoxins. More than 200 mycotoxins have been identified from common molds, and many more remain to be identified.

Some of the molds that are known to produce mycotoxins are commonly found in moisture-damaged buildings. Exposure pathways for mycotoxins can include inhalation, ingestion, or skin contact. Although some mycotoxins are well known to affect humans and have been shown to be responsible for human health effects, for many mycotoxins, little information is available, and in some cases research is ongoing. Some molds can produce several toxins, and some molds produce mycotoxins only under certain environmental conditions. The presence of mold in a building does not necessarily mean that mycotoxins are present or that they are present in large quantities.

d. Water Indicator Molds Certain authorities identify certain molds whose presence indicates excessive moisture. The presence of a few spores of indicator mold should be interpreted with caution. Additionally, it should be recognized that these named molds are not necessarily the only ones of potential significance.

e. Mold Glossary Specific characteristics of the individual molds listed in the report are presented in Table 1.

f. Useful Resources

i. Guidelines on Assessment and Remediation of Fungi in Indoor Environments, New York City Department of Health.

www1.nyc.gov/assets/doh/downloads/pdf/epi/epi-mold-guidelines.pdf

ii. Facts about Mold, New York City Department of Health.www1.nyc.gov/assets/doh/downloads/pdf/epi/mo ld-brochure.pdf

Page 4 of 6 EM-MY-R-8485, Rev03, 07.09.2018

iii. Mold Resources, United States Environmental Protection Agency.

http://www.epa.gov/mold/moldresources.html

iv. Mold in My Home, What do I do? California Department of Health Services.

http://www.lapublichealth.org/eh/docs/housing/brochure/moldhome.pdf

Table 1: Summary of Specific Mold Characteristics

Fungi Environmental Indicator Typically Found

Alternaria Alternaria is one of the more common fungi found in nature. It is found growing indoors on a variety of substrates including wallboards, painted walls, etc.

Arthrinium Arthrinium is a saprobe and is found on plants. It is rarely found growing indoors.

Ascospores

Ascospores are ubiquitous in nature and are commonly found in the outdoor environment. Some fungi that belong to the ascomycete family include the sexual forms of Penicillium/ Aspergillus, Chaetomium, etc that may be frequently found growing on damp substrates.

Aureobasidium

Aureobasidium is commonly found in a variety of soils. Indoors, it is commonly found where moisture accumulates, especially bathrooms, and kitchens, on shower curtains, tile grout, windowsills, textiles, and liquid waste materials.

Basidiospores

Basidiospores are Saprophytes and plant pathogens and are commonly found in gardens, forests, and woodlands. They also include organisms that are the agent of "dry rot," and other fungi that cause white and brown wood rot, which may grow and destroy the structural wood of buildings.

Bipolaris/ Dreschlera

Bipolaris and Dreschlera are usually found associated with plant debris, and soil. They are plant pathogens of numerous plants, particularly grasses. Bipolaris and Dreschlera can grow indoors on a variety of substrates.

Botrytis Botrytis is commonly found in tropical and temperate climates growing on vegetative matter. They may be found indoors in conjugation with indoor plants, fruits and vegetables.

Chaetomium Chaetomium is often found on materials containing cellulose such as sheetrock paper, or other wet materials.

Cladosporium

Cladosporium is a common outdoor mold. They are commonly found on dead plants, food, textiles, and a variety of other surfaces. Indoors, they can grow on a variety of substrates including textiles, wood, moist windowsills, etc. It can grow at 0°C and is associated with refrigerated foods.

Curvularia Curvularia is found on plant materials and is considered a saprobe.

Indoors, they can grow on a variety of substrates.

Epicoccum Epicoccum is a saprophyte and considered a weekly parasitic secondary invader of plants. They tend to colonize continuously damp materials such as damp wallboard and fabrics.

Fusarium Fusarium requires very wet conditions and is frequently isolated from plants and grains. They colonize continuously damp materials such as damp wallboard and water reservoirs for humidifiers and drip pans.

Page 5 of 6 EM-MY-R-8485, Rev03, 07.09.2018

Memnoniella Memnoniella can be found growing on a variety of cellulose-containing materials.

Nigrospora Nigrospora is especially abundant in warm climates and is rarely found growing indoors.

Oidium/ Peronospora

Oidium and Peronospora are plant pathogens and are not found growing indoors.

Penicillium/ Aspergillus

Penicillium and Aspergillus are ubiquitous in environment. Aspergillus tends to colonize continuously damp materials such as damp wallboard and fabrics. Penicillium is commonly found in house dusts, wallpaper, decaying fabrics, moist clipboards, etc.

Pithomyces/ Ulocladium

Pithomyces is commonly found on grass and decaying plant material and are rarely found growing indoors. Ulocladium has a high water requirement and therefore colonizes continuously damp materials such as damp wallboard and fabrics.

Rusts Rusts are plant pathogens and only grow on host plants.

Smuts/ Periconia/

Myxomycetes

Smuts and Myxomycetes are parasitic plant pathogens that require a living host. Smuts do not usually grow indoors. Periconia are rarely found growing indoors. Myxomycetes are occasionally found indoors, but rarely growing.

Stachybotrys Stachybotrys are commonly found indoors on wet materials containing cellulose, such as wallboard, jute, wicker, straw baskets, and other paper materials.

Stemphylium Stemphylium is either parasitic or saprophytic and is rarely found growing indoors.

Torula Torula can grow indoors on cellulose containing materials such as wallboard, jute, wicker, straw baskets, and other paper materials.

Other brown/ colorless

An uncharacteristic fungal spore that does not lend itself to classification via direct microscopy.

Potential Water Intrusion/Indicator Mold Capable of Mycotoxin Production

Potential Water Intrusion/Indicator Mold

Quality Programs

The EMLab P&K’s laboratory network is staffed with highly trained analysts, the majority of which hold advanced degrees. The reliability of test results depends on many factors such as the personnel performing the tests, environmental conditions, selection and validation of test methods, equipment functioning, as well as the sampling, storage and handling of test items, all of which are a reflection of the overall quality system of the laboratory.

EMLab P&K has modeled its quality system after ISO 17025, General Requirements for the Competence of Testing and Calibration Laboratories, one of the most stringent sets of standards in the industry, to ensure that its customers receive the highest standard of accuracy, reliability, and impartiality that they have come to expect from the leader in the environmental industry. EMLab P&K’s laboratories adherence to the standards set forth in ISO 17025 has been validated and formally recognized through accreditations granted by an independent outside agency, American Industrial Hygiene Association Laboratory Accreditation Program, LLC (AIHA-LAP, LLC), on a site by site basis. As an additional measure to demonstrate its competency to perform the analyses it offers to its clients, EMLab P&K laboratories

Page 6 of 6 EM-MY-R-8485, Rev03, 07.09.2018 also participate in a variety of different proficiency testing programs, including the Environmental Microbiology Proficiency Analytical Testing Program (EMPAT) sponsored by the American Industrial Hygiene Association Proficiency Analytical Testing Programs.

As part of our continuous commitment to excellence, EMLab P&K laboratories are also inspected, licensed and/or accredited by a number of governmental agencies and independent associations in addition to those already mentioned above. The scope of services, accreditation certificates, and proficiency results can all be accessed at www.emlabpk.com.

References

1. Bioaerosols: Assessment and Control. Janet Macher, Ed., American Conference of Government Industrial Hygienists, Cincinnati, OH (1999).

2. EPA: The Inside Story. A Guide to Indoor Air Quality, United States Environmental Protection Agency and the United States Consumer Product Safety Commission, Washington

DC (1995).

3. Health Canada: Exposure Guidelines for Residential Indoor Air Quality. Environmental Health Directorate. Health Protection Branch, Health Canada, Ottawa, Ontario (1989).

4. IIRC: Standard and Reference Guide for Professional Water Damage Restoration, 2nd Ed.

Institute of Inspection, Cleaning and Restoration, Vancouver, WA (1999).

5. Field Guide for the Determination of Bio logical Contaminants in Environmental Samples.

American Industrial Hygiene Association, Fairfax, VA (1996).

6. Standards of Practice for the Assessment of Indoor Environmental Quality, Volume I: Mold Sampling, Assessment of Mold Contamination. Indoor Environmental Standards Organization (2002).

(800) 651-4802 www.eurofinsus.com/Built Client: Shive-Hattery C/O: Chad Siems Re: ESA; Coralville Reservoir

Date of Sampling: 08-03-2023 Date of Receipt: 08-04-2023 Date of Report: 08-04-2023

MoldRANGE™, Local Climate; Extended Outdoor Comparison

U.S. Patent No. 10,387,458

Outdoor Location: 5, Outside 35794659 Fungi Identified Outdoor Typical Outdoor Data for: Typical Outdoor Data for:

data August in East North Central† EMLab Regional Climate code¹

A Annual Temp, B Elev., A Rain, B Temp. Range (n‡=143)

The entire year in East North Central† EMLab Regional Climate code¹

A Annual Temp, B Elev., A Rain, B Temp. Range (n‡=1363)

Project zip code 52245 spores/m3 very low low med high very high freq % very low low med high very high freq %

Generally able to grow indoors* Alternaria 150 24 40 93 230 330 89 13 20 60 170 290 60 Bipolaris/Drechslera group - - - - - - 10 7 7 13 27 44 8 Chaetomium - - - - - - 6 7 13 21 22 40 6 Cladosporium 4,100 560 820 2,100 6,800 11,000 99 53 130 640 2,800 5,700 89 Curvularia - 10 13 13 53 130 25 7 13 13 27 42 11 Epicoccum - 12 13 27 120 160 71 7 13 33 110 200 46 Fusarium 27 - - - - - 8 10 13 27 80 110 2 Nigrospora - 13 13 27 40 71 40 7 13 20 53 110 22 Penicillium/Aspergillus types - 53 53 220 530 780 54 27 53 160 440 590 49 Stachybotrys - - - - - - 2 - - - - - < 1 Torula - 9 13 27 40 63 20 7 13 22 110 200 12 Seldom found growing indoors** Ascospores 40 270 390 910 2,400 3,700 99 53 110 440 1,700 3,500 79 Basidiospores 93 590 1,100 3,100 7,700 11,000 > 99 72 180 1,300 3,900 6,700 90 Botrytis 13 - - - - - 2 22 22 22 22 24 3 Cercospora 27 13 27 53 170 280 57 13 20 60 210 530 21 Oidium 53 - - - - - 13 7 13 22 27 47 10 Rusts - 13 13 27 71 130 62 7 13 27 67 130 31 Smuts, Periconia, Myxomycetes - 13 13 27 110 160 73 13 13 40 110 180 60 § TOTAL SPORES/m3 4,500

¹EMLab Regional Climate codes are a climate classification scheme for regional geographic areas containing multiple states. The MoldRANGE™ Local Climate report uses the sampling location zip code to identify the EMLab Regional Climate code in that area. Using information available from the NOAA weather database, the EMLab Regional Climate code sharpens the precision of the MoldRANGE™reporting system, providing more reliable estimates of the range and average concentrations of the different airborne fungal spore types for each region. Additional information on the EMLab Regional Climate code system can be found on the last page of this report.

†The Typical Outdoor Data represents the typical outdoor spore levels across the region's group of states for the time period and EMLab Regional Climate code indicated. The last column represents the frequency of occurrence. The very low, low, med, high, and very high values represent the 10, 20, 50, 80, and 90 percentile values of the spore type when it is detected. For example, if the frequency of occurrence is 63% and the low value is 53, it would mean that the given spore type is detected 63% of the time and, when detected, 20% of the time it is present in levels above the detection limit and below 53 spores/m3. These values are updated periodically and if not enough data is available to make a statistically meaningful assessment, it is indicated with a dash.

‡ n is the sample size used to calculate the MoldRANGE™ Local Climate data summarized in the table.

* The spores in this category are generally capable of growing on wet building materials in addition to growing outdoors. Building related growth is dependent upon the fungal type, moisture level, type of material, and other factors. Cladosporium is one of the predominant spore types worldwide and is frequently present in high numbers. Penicillium/Aspergillus species colonize both outdoor and indoor wet surfaces rapidly and are very easily dispersed. Other genera are usually present in lesser numbers.

** These fungi are generally not found growing on wet building materials. For example, the rusts and smuts are obligate plant pathogens.

However, in each group there are notable exceptions. For example, agents of wood decay are members of the basidiomycetes and high counts of a single morphological type of basidiospore on an inside sample should be considered significant.

§ Total Spores/m3 has been rounded to two significant figures to reflect analytical precision.

EMLab ID: 3341868, Page 1 of 2Eurofins EPK Built Environment Testing, LLC

U.S. Patent No. 10,387,458

1010 N Central Avenue, Suite 460, Glendale, CA 91202

(800) 651-4802 www.eurofinsus.com/Built Client: Shive-Hattery C/O: Chad Siems Re: ESA; Coralville Reservoir

Date of Sampling: 08-03-2023 Date of Receipt: 08-04-2023 Date of Report: 08-04-2023

Understanding EMLab Regional Climate Codes Outdoor airborne spore concentrations are strongly influenced by climate and weather patterns, often resulting in pronounced seasonal and diurnal cycles (Burge 1995). The seasonal climatic changes directly affect the growth cycle of plants, thereby influencing fungal growth, spore maturation, and release cycles. By evaluating outdoor spore concentrations across similar climatic zones rather than for the state as a whole, it is possible to provide a more representative estimate of typical outdoor spore levels and frequency of occurrence for different airborne fungal spore types in a given area.

The EMLab Regional Climate code system is a novel classification system that uses data from the NOAA - National Oceanic and Atmospheric Administration database to define unique climate zones. The following climate variables, for each regional zip code, are obtained from NOAA and assigned a letter code of A (above the regional average for that variable) or B (below the regional average for that variable):

1. Annual High Temperature

2. Elevation

3. Rainfall/Precipitation

4. Monthly Temperature Range

The result is a 4-character code assigned to each statewide zip code, referred to as the Regional Climate Code. Below are some examples of decoded Regional Climate Codes:

AAAA = Above avg. Annual High Temperature, Above avg. Elevation, Above avg. Rainfall/Precipitation, Above avg. Monthly Temperature Range

AABB = Above avg. Annual High Temperature, Above avg. Elevation, Below avg. Rainfall/Precipitation, Below avg. Monthly Temperature Range

BBAA = Below avg. Annual High Temperature, Below avg. Elevation, Above avg. Rainfall/Precipitation, Above avg. Monthly Temperature Range

The actual outdoor air sample data from matching regional climate codes in each group of states are then compiled in a manner relating typical spore concentrations and frequency of occurrence.

The data presented in this report is from the East North Central Region which includes the states of: IA, MI, MN, and WI

The NOAA regional climate variables were selected by mapping data points from a subset of approximately 145,000 weather and geographic database entries to over 80,000 outdoor spore trap samples with known zip codes and assessing them using orthogonal array experimental design techniques. The results were then compared to the typical ranges of spore types found when grouping zip codes using the Koppen-Geiger climatic classification system; a commonly used climatic system that provides an objective numerical definition in terms of climatic elements such as temperature, rainfall, and other seasonal characteristics .

The EMLab Regional Climate codes showed improved granularity and refinement of the zip code groupings, implying a better representation of the expected range of spore types to be found within an individual zip code.

The values on this report were calculated by obtaining the four variables listed above from the over 585 million data points of weather and geographic information available in the NOAA database, and determining the frequencies and percentile values of spore types by utilizing over 180,000 Eurofins EMLab P&K outdoor spore trap samples with known zip codes.

This report groups regional zip codes in relation to these EMLab Regional Climate codes and summarizes MoldRANGE™ data by month and year within each EMLab Regional Climate code.

References:

Burge, Harriet, A. Bioaerosols: Boca Raton: Lewis Publishers, pp. 163-171, 1995.

Interpretation of the data contained in this report is left to the client or the persons who conducted the field work. This report is provided for informational and comparative purposes only and should not be relied upon for any other purpose. "Typical outdoor data" are based on the results of the analysis of samples delivered to and analyzed by Eurofins EMLab P&K and assumptions regarding the origins of those samples.

Sampling techniques, contaminants infecting samples, unrepresentative samples and other similar or dissimilar factors may affect these results.

In addition, Eurofins EMLab P&K may not have received and tested a representative number of samples for every region or time period.

Eurofins EMLab P&K hereby disclaims any liability for any and all direct, indirect, punitive, incidental, special or consequential damages arising out of the use or interpretation of the data contained in, or any actions taken or omitted in reliance upon, this report.

EMLab ID: 3341868, Page 2 of 2Eurofins EPK Built Environment Testing, LLC

(800) 651-4802 www.eurofinsus.com/Built Client: Shive-Hattery C/O: Chad Siems Re: ESA; Coralville Reservoir

Date of Sampling: 08-03-2023 Date of Receipt: 08-04-2023 Date of Report: 08-04-2023

MoldSTAT™: Supplementary Statistical Spore Trap Report Outdoor Summary: 5: Outside 35794659

Species detected Outdoor sample spores/m3 Typical outdoor ranges Freq.

<100 1K 10K >100K (North America) %

Alternaria 150 7 - 27 - 390 38 Ascospores 40 13 - 210 - 5,800 74

Basidiospores 93 13 - 430 - 24,000 89 Botrytis 13 7 - 27 - 270 4

Cercospora 27 7 - 33 - 510 12 Cladosporium 4,100 27 - 430 - 7,500 87

Fusarium 27 7 - 27 - 290 3 Oidium 53 7 - 22 - 230 10

Penicillium/Aspergillus types < 13 17 - 190 - 2,700 61 Smuts, Periconia, Myxomycetes < 13 7 - 53 - 810 63

Total 4,500 The "Typical outdoor ranges" and "Freq. %" columns show the typical low, medium, and high spore counts per cubic meter and the frequency of occurrence for the given spore type. The low, medium, and high values represent the 2.5, 50, and 97.5 percentile values when the spore type is detected. For example, if the low value is 53 and the frequency of occurence is 63%, it would mean that we typically detect the given spore type on 63 percent of all outdoor samples and, when detected, 2.5% of the time it is present in levels below 53 spores/m3.

Indoor Samples

Location: 1: Old visitors ctr 35794644 % of outdoor total spores/m3 Friedman chi-square* (indoor variation)

Agreement ratio** (indoor/outdoor)

Spearman rank correlation***

(indoor/outdoor)

MoldSCORE**** (indoor/outdoor)

Result: 7% dF: 3 Result: 9.0500

Critical value: 7.8147 Inside Similar: No

Result: 0.5455 dF: 8 Result: 0.6310

Critical value: 0.6190 Outside Similar: Yes

Score: 101 Result: Low

Species Detected Spores/m3 <100 1K 10K >100K

Ascospores 13 Basidiospores 13 Cladosporium 320

Total 350

EMLab ID: 3341868, Page 1 of 3Eurofins EPK Built Environment Testing, LLC

(800) 651-4802 www.eurofinsus.com/Built Client: Shive-Hattery C/O: Chad Siems Re: ESA; Coralville Reservoir

Date of Sampling: 08-03-2023 Date of Receipt: 08-04-2023 Date of Report: 08-04-2023

MoldSTAT™: Supplementary Statistical Spore Trap Report Location: 2: Comer rm 35794652 % of outdoor total spores/m3 Friedman chi-square* (indoor variation)

Agreement ratio** (indoor/outdoor)

Spearman rank correlation***

(indoor/outdoor)

MoldSCORE**** (indoor/outdoor)

Result: 4% dF: 3 Result: 9.0500

Critical value: 7.8147 Inside Similar: No

Result: 0.4000 dF: 8 Result: 0.7143

Critical value: 0.6190 Outside Similar: Yes

Score: 101 Result: Low

Species Detected Spores/m3 <100 1K 10K >100K

Basidiospores 13 Cladosporium 210

Total 230

Location: 3: 2nd Floor 35794656 % of outdoor total spores/m3 Friedman chi-square* (indoor variation)

Agreement ratio** (indoor/outdoor)

Spearman rank correlation***

(indoor/outdoor)

MoldSCORE**** (indoor/outdoor)

Result: 20% dF: 3 Result: 9.0500

Critical value: 7.8147 Inside Similar: No

Result: 0.5714 dF: 10 Result: 0.5788

Critical value: 0.5515 Outside Similar: Yes

Score: 111 Result: Low

Species Detected Spores/m3 <100 1K 10K >100K

Alternaria 40 Ascospores 13

Basidiospores 40 Cladosporium 810

Epicoccum 13 Smuts, Periconia, Myxomycetes 13

Total 930

Location: 4: Basement 35794649 % of outdoor total spores/m3 Friedman chi-square* (indoor variation)

Agreement ratio** (indoor/outdoor)

Spearman rank correlation***

(indoor/outdoor)

MoldSCORE**** (indoor/outdoor)

Result: 14% dF: 3 Result: 9.0500

Critical value: 7.8147 Inside Similar: No

Result: 0.4000 dF: 8 Result: 0.7976

Critical value: 0.6190 Outside Similar: Yes

Score: 107 Result: Low

Species Detected Spores/m3 <100 1K 10K >100K

Alternaria 40 Cladosporium 610

Total 650

EMLab ID: 3341868, Page 2 of 3Eurofins EPK Built Environment Testing, LLC

(800) 651-4802 www.eurofinsus.com/Built Client: Shive-Hattery C/O: Chad Siems Re: ESA; Coralville Reservoir

Date of Sampling: 08-03-2023 Date of Receipt: 08-04-2023 Date of Report: 08-04-2023

MoldSTAT™: Supplementary Statistical Spore Trap Report

* The Friedman chi-square statistic is a non-parametric test that examines variation in a set of data (in this case, all indoor spore counts). The null hypothesis (H0) being tested is that there is no meaningful difference in the data for all indoor locations. The alternative hypothesis (used if the test disproves the null hypothesis) is that there is a difference between the indoor locations.

The null hypothesis is rejected when the result of the test is greater than the critical value. The critical value that is displayed is based on the degrees of freedom (dF) of the test and a significance level of 0.05.

** An agreement ratio is a simple method for assessing the similarity of two samples (in this case the indoor sample and the outdoor summary) based on the spore types present. A score of one indicates that the types detected in one location are the same as that in the other. A score of zero indicates that none of the types detected indoors are present outdoors. Typically, an agreement of 0.8 or higher is considered high.

*** The Spearman rank correlation is a non-parametric test that examines correlation between two sets of data (in this case the indoor location and the outdoor summary). The null hypothesis (H0) being tested is that the indoor and outdoor samples are unrelated. The alternative hypothesis (used if the test disproves the null hypothesis) is that the samples are similar. The null hypothesis is rejected when the result of the test is greater than the critical value. The critical value that is displayed is based on the degrees of freedom (dF) of the test and a significance level of 0.05.

**** MoldSCORE™ is a specialized method for examining air sampling data. It is a score between 100 and 300, with 100 indicating a greater likelihood that the airborne indoor spores originated from the outside, and 300 indicating a greater likelihood that they originated from an inside source. The Result displayed is based on the numeric score given and will be either Low, Medium, or High, indicating a low, medium, or high likelihood that the spores detected originated from an indoor source.

Eurofins EMLab P&Kreserves the right to, and may at anytime, modify or change the MoldScore algorithm without notice.

Interpretation of the data contained in this report is left to the client or the persons who conducted the field work. This report is provided for informational and comparative purposes only and should not be relied upon for any other purpose. "Typical outdoor ranges" are based on the results of the analysis of samples delivered to and analyzed by Eurofins EMLab P&K and assumptions regarding the origins of those samples. Sampling techniques, contaminants infecting samples, unrepresentative samples and other similar or dissimilar factors may affect these results. With the statistical analysis provided, as with all statistical comparisons and analyses, false-positive and false-negative results can and do occur. Eurofins EMLab P&K hereby disclaims any liability for any and all direct, indirect, punitive, incidental, special or consequential damages arising out of the data contained in, or any actions taken or omitted in reliance upon, this report.

EMLab ID: 3341868, Page 3 of 3Eurofins EPK Built Environment Testing, LLC

10544 Justin Dr | Urbandale IA 50323 | 515.401.6977 | AllianceEnv.com

8/25/23

Dee Howard

Coralville Dam Ranger Garage

2850 Prairie Du Chien Rd NE

Iowa City, IA 52240

Asbestos Testing Report

Date of Sampling: 8/22/23

Date of Reporting: 8/25/23

Address of Sampling: 2850 Prairie Du Chien Rd NE- Iowa City

Property Type – Residential / Commercial: Commercial

Total Number of Field Samples Collected: 19

Total Number of Lab Analysis Performed: 25

Number of Samples NO ASBESTOS Detected: 25

Number of Samples containing <1% (trace) ASBESTOS 0

Number of Samples CONTAINING >1% ASBESTOS 0

Sample Location Sample Description % Asbestos

General Summary

The information in this report represents only the sampled areas.

The purpose of this testing was to determine the presence of and identify quantities and locations of asbestos containing building materials that may be disturbed prior to planned renovation/demolition of the structure. Representative samples were taken from the affected area(s).

This property was inspected in accordance with NESHAP (National Emission Standards for Hazardous Air Pollutants) regulations prior to scheduled renovation/demolition activities which may disturb asbestos containing building materials. Additionally, testing was also performed in compliance with the OSHA Construction Standard: 29 CFR 1926.1101(k)(5)(i-iii).

Field sampling methods were based on NESHAP protocols. Representative samples of suspect building materials were taken from Homogeneous Areas (HA−defined as similar in age, appearance and function).

The purpose of this inspection was to identify quantities and locations of asbestos containing building materials prior to restoration/demolition of the structures. Bulk samples of suspect asbestos containing materials (ACM) were analyzed by Polarized Light Microscopy (PLM) with dispersion staining, as described in 40 CFR Part 763 and AHERA. Each sample was analyzed for the six different types of fibrous asbestos forms, of which a percentage, by volume, is estimated and summarized. If further analysis and quantification is warranted, this analysis is performed by EPA 600ƒR−93/116 with 400- or 600-Point Count Procedure. Further analysis of samples may also be performed at your request using Transmission Electron Microscopy (TEM).

Sample analysis was performed by: EuroFins CEI, 730 SE Maynard Rd, Cary NC. EuroFins CEI is accredited by the National Institute for Standards and Technology for Polarized Light Microscopy analysis under their NVLAP (National Voluntary Lab Accreditation Program).

REGULATORY INFOMATION

It is the responsibility of the remediation company/contractor to follow all regulatory requirements when asbestos containing materials are present, including, but not limited to, OSHA, EPA, and State agencies.

Asbestos Containing Building Materials (ACBM) and their control during renovation or demolition activities is regulated in lowa by the lowa Department of Natural Resources. Specific questions about testing or abatement activities may be directed to: Mr Tom Wuehr, Iowa DNR-Air Quality Division, 515-725-8200 or Tom.Wuehr@DNR.Iowa.gov.

Please feel free to contact me at 515-401-6977 with any questions.

Thank you, Jamie Papian Certified Indoor Environmental Consultant Iowa Asbestos Building Inspector, License # IA: 23-9495

Alliance Environmental Services | 10544 Justin Dr | Urbandale IA 50323 | 515.401.6977 | AllianceEnv.com

August 25, 2023

Alliance Environmental Services 10544 Justin Dr Urbandale, IA 50322

CLIENT PROJECT: Ranger Garage, Coralville Park Ranger Garage

CEI LAB CODE: B2318296

Dear Customer:

Enclosed are asbestos analysis results for PLM Bulk samples received at our laboratory on August 25, 2023. The samples were analyzed for asbestos using polarizing light microscopy (PLM) per the EPA 600 Method.

Sample results containing >1% asbestos are considered asbestos-containing materials (ACMs) per EPA regulatory requirements. The detection limit for the EPA 600 Method is <1% asbestos by weight as determined by visual estimation.

Thank you for your business and we look forward to continuing good relations.

730 SE Maynard Road • Cary, NC 27511 • 919.481.1413

Tianbao Bai, Ph.D., CIH Laboratory Director

Kind Regards, ASBESTOS ANALYTICAL REPORT

By: Polarized Light Microscopy

Prepared for

Alliance Environmental Services

CLIENT PROJECT:

LAB CODE:

TEST METHOD: EPA 600 / R93 / 116 and EPA 600 / M4-82 / 020

REPORT DATE:

TOTAL SAMPLES ANALYZED:

# SAMPLES >1% ASBESTOS:

Ranger Garage, Coralville Park Ranger Garage

08/25/23

B2318296

730 SE Maynard Road • Cary, NC 27511 • 919.481.1413

Asbestos Report Summary By: POLARIZING LIGHT MICROSCOPY

PROJECT: Ranger Garage, Coralville Park Ranger Garage

LAB CODE: B2318296

Client ID Lab ID Color Sample Description

ASBESTOS

%Layer

METHOD: EPA 600 / R93 / 116 and EPA 600 / M4-82 / 020

1 B2318296.01 White Popcorn Texture None Detected1

2 B2318296.02 White Popcorn Texture None Detected2

3 B2318296.03 White Popcorn Texture None Detected3

4 B2318296.04 White Popcorn Texture None Detected4

5 Layer 1 B2318296.05 White Joint Compound None Detected5

Layer 2 B2318296.05 Beige Tape None Detected

Layer 3 B2318296.05 White,Tan Drywall None Detected

6 Layer 1 B2318296.06 White Joint Compound None Detected6

Layer 2 B2318296.06 Beige Tape None Detected

Layer 3 B2318296.06 White,Tan Drywall None Detected

7 Layer 1 B2318296.07 White Joint Compound None Detected7

Layer 2 B2318296.07 Beige Tape None Detected

Layer 3 B2318296.07 White,Tan Drywall None Detected

8 B2318296.08 Yellow Carpet Mastic None Detected8

Page 1 of 1730 SE Maynard Road • Cary, NC 27511 • 919.481.1413

ASBESTOS BULK ANALYSIS

Lab Code: B2318296 Date Received: 08-25-23 Date Analyzed: 08-25-23 Date Reported: 08-25-23

Client ID Lab ID

Lab Attributes

Lab Description

ASBESTOS

ASBESTOS BULK PLM, EPA 600 METHOD

NON-ASBESTOS COMPONENTS

Non-Fibrous

Client: Alliance Environmental Services 10544 Justin Dr Urbandale, IA 50322

Project: Ranger Garage, Coralville Park Ranger Garage

Fibrous

White Popcorn Texture1

B2318296.01 Heterogeneous

Non-fibrous Bound

75% 20% 5%

Binder Vermiculite Paint

None Detected

White Popcorn Texture2

B2318296.02 Heterogeneous

Non-fibrous Bound

75% 20% 5%

Binder Vermiculite Paint

None Detected

White Popcorn Texture3

B2318296.03 Heterogeneous

Non-fibrous Bound

75% 20% 5%

Binder Vermiculite Paint

None Detected

White Popcorn Texture4

B2318296.04 Heterogeneous

Non-fibrous Bound

75% 20% 5%

Binder Vermiculite Paint

None Detected

White

B2318296.05

Heterogeneous

Non-fibrous Bound

65% 30% 5%

Binder Calc Carb Paint

None Detected Layer 1

Joint Compound

Beige Tape

B2318296.05 100%Heterogeneous

Fibrous Loosely Bound

Cellulose None DetectedLayer 2

White,Tan Drywall

B2318296.05 20%Heterogeneous

Fibrous Loosely Bound

80%Cellulose Gypsum None DetectedLayer 3

Page 1 of 3730 SE Maynard Road • Cary, NC 27511 • 919.481.1413

ASBESTOS BULK ANALYSIS

Lab Code: B2318296 Date Received: 08-25-23 Date Analyzed: 08-25-23 Date Reported: 08-25-23

Client ID Lab ID

Lab Attributes

Lab Description

ASBESTOS

ASBESTOS BULK PLM, EPA 600 METHOD

NON-ASBESTOS COMPONENTS

Non-Fibrous

Client: Alliance Environmental Services 10544 Justin Dr Urbandale, IA 50322

Project: Ranger Garage, Coralville Park Ranger Garage

Fibrous

White

B2318296.06

Heterogeneous

Non-fibrous Bound

65% 30% 5%

Binder Calc Carb Paint

None Detected Layer 1

Joint Compound

Beige Tape

B2318296.06 100%Heterogeneous

Fibrous Loosely Bound

Cellulose None DetectedLayer 2

White,Tan Drywall

B2318296.06 20%Heterogeneous

Fibrous Loosely Bound

80%Cellulose Gypsum None DetectedLayer 3

White

B2318296.07

Heterogeneous

Non-fibrous Bound

65% 30% 5%

Binder Calc Carb Paint

None Detected Layer 1

Joint Compound

Beige Tape

B2318296.07 100%Heterogeneous

Fibrous Loosely Bound

Cellulose None DetectedLayer 2

White,Tan Drywall

B2318296.07 20%Heterogeneous

Fibrous Loosely Bound

80%Cellulose Gypsum None DetectedLayer 3

Yellow Carpet Mastic8

B2318296.08 Homogeneous

Non-fibrous Bound

100% Mastic None Detected

Page 2 of 3730 SE Maynard Road • Cary, NC 27511 • 919.481.1413

LEGEND: Non-Anth = Non-Asbestiform Anthophyllite Non-Trem = Non-Asbestiform Tremolite Calc Carb = Calcium Carbonate

METHOD: EPA 600 / R93 / 116 and EPA 600 / M4-82 / 020

REPORTING LIMIT: <1% by visual estimation

REPORTING LIMIT FOR POINT COUNTS: 0.25% by 400 Points or 0.1% by 1,000 Points

REGULATORY LIMIT: >1% by weight

Due to the limitations of the EPA 600 method, nonfriable organically bound materials (NOBs) such as vinyl floor tiles can be difficult to analyze via polarized light microscopy (PLM). EPA recommends that all NOBs analyzed by PLM, and found not to contain asbestos, be further analyzed by Transmission Electron Microscopy (TEM). Please note that PLM analysis of dust and soil samples for asbestos is not covered under NVLAP accreditation. Estimated measurement of uncertainty is available on request.

This report relates only to the samples tested or analyzed and may not be reproduced, except in full, without written approval by Eurofins CEI. Eurofins CEI makes no warranty representation regarding the accuracy of client submitted information in preparing and presenting analytical results.

Interpretation of the analytical results is the sole responsibility of the client. Samples were received in acceptable condition unless otherwise noted. This report may not be used by the client to claim product endorsement by NVLAP or any other agency of the U.S. Government.

Information provided by customer includes customer sample ID and sample description.

ANALYST: APPROVED BY:

Tianbao Bai, Ph.D., CIH Laboratory Director

Regan Kerns

730 SE Maynard Road • Cary, NC 27511 • 919.481.1413

Lab Report #:

Date Received: 8/23/2023

Date Analyzed: 8/23/2023

Date Reported: 8/23/2023

Sample

Layer

Description

Stereoscopic Appearance

% Non-

Fibrous % Asbestos

1 Mastic Brown, Non-Fibrous, Homogeneous 100% Non-Detected

2 Mastic Brown, Non-Fibrous, Homogeneous 100% Non-Detected

3 Caulk Tan, Non-Fibrous, Homogeneous 100% Non-Detected

4 Mastic Gray, Non-Fibrous, Homogeneous 100% Non-Detected

5 Mastic Clear, Non-Fibrous, Homogeneous 100% Non-Detected

6 Caulk Brown, Non-Fibrous, Homogeneous 100% Non-Detected

7 Shingle Red/Black, Fibrous, Heterogeneous 60% Cellulose 40% Non-Detected

8 Felt Black, Fibrous, Heterogeneous 90% Cellulose 10% Non-Detected

9 Ceiling Tile White/Yellow, Fibrous, Heterogeneous 90% Glass 10% Non-Detected

10 Caulk Gray, Non-Fibrous, Homogeneous 100% Non-Detected

11 Linoleum Brown/Red, Fibrous, Heterogeneous…