2.3 Mold Report - USDA Final.pdf

701 East Pratt Street 667.239.1007

Baltimore, Maryland 21202 EHCIMPACT.COM

January 4, 2023

SERVPRO of Hunt Valley and Harford County 15 Loveton Circle Sparks, Maryland 21152

Attention: Bruce Carey

Ref: Limited Assessment for Water Damage and Mold Growth

Property Inspected: USDA Building 7: 003 Circle Rd. Beltsville, MD 20705

Inspection Date: 12/30/2022

Environmental Health Consultants, LLC (EHC) was requested by Servpro of Hunt Valley to assess the extent of mold and water damage following multiple water leaks on the fourth floor of Building 7 which reportedly occurred around December 22, 2022. The initial assessment was performed on December 30, 2022. The assessment was limited to rooms that were unlocked at the time of the assessment.

EHC collected moisture readings of representative materials in accessible areas. Materials including drywall, plaster, carpeting and furniture were noted as having elevated moisture throughout impacted areas.

Locations of impacted materials are noted in the attached sketch.

EHC collected air samples for mold spores in 18 locations throughout the building, as well as one outdoor sample for comparison. Samples were collected on Allergenco-D cassettes through which air was pulled at a calibrated flow rate of 15 liters per minute for five minutes. The samples were sent to Hayes Microbial Consulting in Midlothian, VA for analysis for molds spores by direct microscopy. The analytical results are attached.

Mold-in-air samples are interpreted by comparing concentrations of mold spores found indoors with those found outdoors. If the analysis of indoor samples indicates elevated concentrations of any types of mold relative to outdoors, it is an indication of an indoor source of mold spores.

Samples collected in four of the 18 locations indicated elevated concentrations of spores relative to the outdoors. These locations were first floor east hallway, the third-floor women’s room, Lab 304, and the wall chase in the third-floor east hallway.

Discussion and Recommendations:

Materials in a significant portion of the building were found to have elevated moisture at the time of the inspection. Porous materials that remain wet for longer than 72 hours are at significant risk of mold growth.

Mold will continue to grow as long as moisture and nutrients are present.

EHC recommends the following:

• Use desiccants and/or dehumidifiers to increase the speed of drying.

• Inspect contents in impacted areas. Porous contents such as paper, cloth or furniture with upholstery or particle board with visible mold should be disposed of. If employees’ personal property is found to be mold-impacted, the employees should be advised to dispose of it, and the items should not be brought back into the building if employees choose to keep them. Non-porous items such as hard

Mold and Water Damage Assessment Report January 4, 2023 USDA Building 7: 003 Circle Rd. Beltsville, MD 20705 Page 2 of 2

Environmental Health Consultants, LLC wood, finished furniture and metal furniture should be cleaned using HEPA vacuums and/or by wiping with an antimicrobial solution.

• Remove all porous materials, including paper, drywall, carpeting, particle board cabinets and ceiling tiles that were found to have elevated moisture as of December 30.

• Remove covebase from plaster walls in impacted areas.

• Inspect remaining surfaces in impacted areas for additional mold growth.

• Inspect HVAC systems for mold growth following remediation and clean HVAC components with visible mold growth.

A draft mold remediation protocol is attached. EHC will refine the scope of work and protocol once the contents have been removed.

Our professional services were performed in accordance with customary principles and practices in the field of industrial hygiene. If you have any questions, please contact us at contact@ehcimpact.com.

Sincerely, Josh Julius Certified Industrial Hygienist

Attachments: Sketch, Draft Protocol, Laboratory Results

U.S. Department of Agriculture Building 7 – Basement Floor Plan

003 Circle Rd. Beltsville, Maryland 20705

Date of Inspection: 12/30/2022 Drawing # M01

Floor plan not to scale To be used for reference purposes only

Drawing Key:

Blue indicates carpet Red indicates drywall wall Green indicates no visible evidence of mold/moisture

Building 7 – First Floor Plan

003 Circle Rd. Beltsville, Maryland 20705

Date of Inspection: 12/30/2022 Drawing # M02

Floor plan not to scale To be used for reference purposes only

Drawing Key:

Blue indicates carpet

Building 7 – Second Floor Plan

003 Circle Rd. Beltsville, Maryland 20705

Date of Inspection: 12/30/2022 Drawing # M03

Floor plan not to scale To be used for reference purposes only

Drawing Key:

Blue indicates carpet

Building 7 – Third Floor Plan

003 Circle Rd. Beltsville, Maryland 20705

Date of Inspection: 12/30/2022 Drawing # M04

Floor plan not to scale To be used for reference purposes only

Drawing Key:

Blue indicates carpet

Building 7 – Fourth Floor Plan

003 Circle Rd. Beltsville, Maryland 20705

Date of Inspection: 12/30/2022 Drawing # M05

Floor plan not to scale To be used for reference purposes only

Drawing Key:

Blue indicates carpet

701 East Pratt Street 667.239.1007 Baltimore, Maryland 21202 EHCIMPACT.COM

Mold Remediation Protocol

USDA Building 007 003 Circle Road, Beltsville Maryland

January 3, 2023

077-A Prepared for ServPro of Hunt Valley and Harford County

1. Background

a. Environmental Health Consultants inspected the property on December 30, 2022 and identified visible mold. This protocol is designed to remediate mold identified during the inspection on December 30, 2022. This protocol should be updated if dehumidification and mold remediation is not performed before January 7th, 2023.

b. Reportedly the building has a history of water loss events and HVAC deficiencies.

The most recent water event occurred on or around December 22nd in multiple locations on the 4th floor. All floors were impacted by the most recent water event.

Approximately 25% of the rooms throughout the building were not accessible on the date of the inspection.

2. Scope of Work

a. Dehumidification and drying on plaster walls with elevated moisture content (primarily the east side of the building)

b. Clean personal property and remove from work area or seal in a plastic cover.

c. Remove and dispose the following materials:

i. Water damaged ceiling tiles and ceiling tile debris (approximately 70 offices). Some offices have water damaged 1’ x 1’ ceiling tile glued to the concrete deck above water damaged 2’ x 4’ drop in ceiling tile.

ii. Carpet in all rooms with evidence of water damage (approximately 50 rooms).

iii. Covebase on all drywall walls. If evidence of suspect mold growth is identified, remove the lower 2 feet of drywall (approximately 30 walls).

iv. Wood base cabinets in rooms 305.

v. Miscellaneous water damaged cellulose-based materials (ex. cardboard boxes).

vi. Insulation inside of wall chases on the east side of the building (quantity

TBD).

d. Clean the following materials:

i. Non-porous furniture including but not limited to metal/wood cabinets, countertops, desks and chairs.

ii. Ceiling tile grid, duct insulation and pipe insulation with evidence of water damage/staining.

USDA Building 007 Mold Protocol January 3, 2023 ServPro of Hunt Valley / Harford County Page 2

iii. Supply and return grills/diffusers in every room with visible evidence of particulate/mold (approximately 300 diffusers).

A drawing with the approximate locations of mold contaminated drywall and carpet is attached to this protocol. Hidden mold may be present outside of the areas depicted on the drawing. Representative photos of water-damaged and mold-contaminated materials are included below.

3. General Conditions

a. Utilities including water and electric are available on site.

b. EHC has sampled water damaged building materials for asbestos and lead-based paint. The asbestos and lead-based paint screening report is attached.

i. The black flooring mastic is an asbestos containing building material

ii. No lead-based paint was identified on the water damaged building materials.

4. Worker Protection

a. Respiratory Protection – Half face respirator with P-100 cartridges

b. Other PPE

i. Full-body coveralls

ii. Gloves

iii. Steel-toe boots

iv. Hard hat

v. Knee pads

vi. Eye Protection

c. Decontamination Procedures

i. Remove full-body coveralls at exit from containment

ii. Proceed to wash station to wash hands, face, and respirator.

Figure 3 - Water Damaged 1' x 1' Ceiling Tile

Figure 1 - Water Damaged Ceiling Tile & Carpet

Figure 2 - Water Damaged Insulation

Figure 4 - Mold on drywall behind vinyl covebase

ServPro of Hunt Valley / Harford County Page 3

d. Safety

i. Contractor shall comply with all OSHA regulations and best industry practices for safety. The list below is a partial list of additional hazards.

Contractor shall protect employees from these hazards and other hazards on the job site that are not listed.

1. Mold Exposure

2. Asbestos

3. Lead

4. Crystalline silica

5. Sharp Tools

6. Power Tools

7. Ladders

8. Slips and Trips

9. Lifting Heavy Objects

10. Electricity

5. Engineering Controls

a. HEPA Vacuums and Wet Methods during removal and cleanup operations.

b. Critical Barriers

i. Seal HVAC Vents/returns

ii. Use 6-mil polyethylene sheeting (6-mil poly) to construct critical barriers around work area. Seal all entries to the floor above.

iii. Install 6-mil poly drop cloth on floor.

c. Negative Air Machines

i. Operate a negative air machine rated to exhaust 2000 CFM or more.

Direct exhaust to outdoors.

d. Work Area Access

i. Construct a one-stage air lock for entering work area.

e. Air Management During Non-Work Hours

i. At the end of the shift, allow negative air machine to operate in negative pressure mode for 15 to 30 minutes after work stops. Then turn off the negative air machine and seal entrance to air lock.

6. Work Procedures

a. Turn off and lockout/tagout the air handling unit if site is unoccupied.

b. Set up negative pressure containment.

c. Clean and remove personal property identified in section 2.

d. Dispose of personal property identified in section 2.

e. Pre-clean floors with HEPA vacuum.

f. Complete installation of floor or wall coverings.

g. Remove and dispose building materials identified in section 2. Dispose of debris promptly after removal.

h. Inspect adjacent areas for additional visible mold or water damage

i. Clean building materials identified in paragraph 2 and any surfaces exposed by removal of building materials.

ServPro of Hunt Valley / Harford County Page 4

j. If it appears that mold may extend behind wall studs or under baseplates, remove the framing. If exposed wall framing is mold impacted, sand down the framing to solid wood.

k. Operate dehumidifier until building materials are completely dry.

l. Treat wood framing or concrete surfaces in wall cavities with a sanitizing agent with an EPA approved label indicating effectiveness against bacteria and fungi.

m. Fine clean work area, removing all visible dust and debris. Wet wipe or HEPA vac all surfaces not covered by poly.

n. Paint wood framing that had visible mold and/or water damage with an anti-fungal paint.

o. Obtain a final clearance inspection.

p. Remove all poly and clean floors with HEPA vacuum or by wiping with anti-microbial solution.

7. Waste Management

a. Waste will be packaged in plastic bags or wrapped in plastic prior to removal from containment. Wood framing members may be wet wiped in lieu of packaging. Waste should be immediately removed to outdoors.

b. Waste will be disposed in a landfill approved to accept general construction debris.

8. Final Clearance

a. Allow negative pressure to operate 4 to 24 hours after completion of remediation.

b. After 8.a is complete, turn off negative air machine and allow area to sit for 24 hours.

c. Independent industrial hygienist is to perform a visual inspection to verify that work from this protocol is complete.

d. Collect air samples from in the containment, outside of the containment, and outdoors. Submit to laboratory for analysis. Remediation is complete when air samples do not indicate an indoor source for mold spores.

9. Limitations

a. This protocol was designed to comply with US EPA guidelines for the removal of mold impacted materials from buildings. The purpose of the protocol is to protect the workers and the environment during mold remediation and to define the scope of services being performed.

b. Other mold may exist in or near the work area that was not discovered during the inspection. This protocol does not include previously undiscovered mold.

c. Mold will return to the area if water intrusion issues are not alleviated.

#23000160

Analysis Report prepared for

Environmental Health Consultants, LLC

701 E. Pratt Street, Hall 3A Baltimore, MD 21202

Phone: (740) 274-1222

007-A USDA Building 007

Collected: December 30, 2022 Received: January 4, 2023 Reported: January 4, 2023

We would like to thank you for trusting Hayes Microbial for your analytical needs!

We received 24 samples by FedEx in good condition for this project on January 4th, 2023.

The results in this analysis pertain only to this job, collected on the stated date, and should not be used in the interpretation of any other job. Information supplied by the customer can affect the validity of results. These results apply only to the samples as received. This report may not be duplicated, except in full, without the written consent of Hayes Microbial Consulting, LLC.

All information provided to Hayes Microbial is confidential information relating to our customers and their clients. We will not disclose, copy, or distribute any information verbally or written, except to those designated by the customer(s). We take confidentiality very seriously. No changes to the distribution list will be made without the express consent of the customer.

This laboratory bears no responsibility for sample collection activities, analytical method limitations, or your use of the test results. Interpretation and use of test results are your responsibility. Any reference to health effects or interpretation of mold levels is strictly the opinion of Hayes Microbial. In no event, shall Hayes Microbial or any of its employees be liable for lost profits or any special, incidental or consequential damages arising out of the use of these test results.

Steve Hayes, BSMT(ASCP) Laboratory Director Hayes Microbial Consulting, LLC.

EPA Laboratory ID: VA01419

Lab ID: #188863

DPH License: #PH-0198

Hayes Microbial Consulting, LLC. 3005 East Boundary Terrace, Suite F. Midlothian, VA. 23112 (804) 562-3435 contact@hayesmicrobial.com Page: 1 of 10

Sample Number Sample Name

Sample Volume Reporting Limit

Background Fragments

Organism

Alternaria Ascospores

Aspergillus|Penicillium Basidiospores

Bipolaris|Drechslera Chaetomium

Cladosporium Curvularia

Epicoccum Fusarium

Memnoniella Myxomycetes

Pithomyces Stachybotrys Stemphylium

Torula Ulocladium

Total

1 4905337 3rd Floor - Hallway East

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 50.0%

1 13 50.0%

2 26 100%

2 4905216 3rd Floor - 306 Lab

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 100.0%

1 13 100%

3 4905586 3rd Floor - 307 Lab

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 100.0%

1 13 100%

4 4905418 3rd Floor - Hallway Wall

Chase 75 liter

13 spores/m³

ND

Raw Count Count / m3 % of Total

256 3413 86.5%

40 533 13.5%

296 3946 100%

Kamau McAbee Environmental Health Consultants, LLC 701 E. Pratt Street, Hall 3A Baltimore, MD 21202

(740) 274-1222

007-A USDA Building 007

#23000160

Spore Trap

SOP - HMC#101

Water Damage Indicator Common Allergen Slightly Higher than Baseline Significantly Higher than Baseline Ratio Abnormality

Project Analyst:

Ramesh Poluri, PhD

Date:

01 - 04 - 2023 Reviewed By:

Steve Hayes, BSMT

Collected:Dec 30, 2022 Received: Jan 4, 2023 Reported: Jan 4, 2023 Revision: 2

3005 East Boundary Terrace, Suite F. Midlothian, VA. 23112 (804) 562-3435 contact@hayesmicrobial.com Page: 2 of 10

Sample Name

Sample Volume Reporting Limit

Background Fragments

Organism

Alternaria Ascospores

Aspergillus|Penicillium Basidiospores

Bipolaris|Drechslera Chaetomium

Cladosporium Curvularia

Epicoccum Fusarium

Memnoniella Myxomycetes

Pithomyces Stachybotrys Stemphylium

Torula Ulocladium

Total

5 4905476 3rd Floor - Hallway West

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 100.0%

1 13 100%

6 4905289 3rd Floor - 304 Lab

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

7 93 100.0%

7 93 100%

7 4905512 3rd Floor - 311 Lab

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

2 27 100.0%

2 27 100%

8 4905562 3rd Floor - Womens Restroom

75 liter 13 spores/m³

13/m³

Raw Count Count / m3 % of Total

240 3200 29.1%

584 7787 70.9%

824 10987 100%

Kamau McAbee Environmental Health Consultants, LLC 701 E. Pratt Street, Hall 3A Baltimore, MD 21202

(740) 274-1222

007-A USDA Building 007

#23000160

Spore Trap

SOP - HMC#101

Water Damage Indicator Common Allergen Slightly Higher than Baseline Significantly Higher than Baseline Ratio Abnormality

3005 East Boundary Terrace, Suite F. Midlothian, VA. 23112 (804) 562-3435 contact@hayesmicrobial.com Page: 3 of 10

Sample Name

Sample Volume Reporting Limit

Background Fragments

Organism

Alternaria Ascospores

Aspergillus|Penicillium Basidiospores

Bipolaris|Drechslera Chaetomium

Cladosporium Curvularia

Epicoccum Fusarium

Memnoniella Myxomycetes

Pithomyces Stachybotrys Stemphylium

Torula Ulocladium

Total

9 4905524 2nd Floor - Hallway West

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 100.0%

1 13 100%

10 4905440 2nd Floor - Hallway East

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 100.0%

1 13 100%

11 4905334 2nd Floor - 205 Lab

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 100.0%

1 13 100%

12 4905506 First Floor - Hallway West

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 50.0%

1 13 50.0%

2 26 100%

Kamau McAbee Environmental Health Consultants, LLC 701 E. Pratt Street, Hall 3A Baltimore, MD 21202

(740) 274-1222

007-A USDA Building 007

#23000160

Spore Trap

SOP - HMC#101

Water Damage Indicator Common Allergen Slightly Higher than Baseline Significantly Higher than Baseline Ratio Abnormality

3005 East Boundary Terrace, Suite F. Midlothian, VA. 23112 (804) 562-3435 contact@hayesmicrobial.com Page: 4 of 10

Sample Name

Sample Volume Reporting Limit

Background Fragments

Organism

Alternaria Ascospores

Aspergillus|Penicillium Basidiospores

Bipolaris|Drechslera Chaetomium

Cladosporium Curvularia

Epicoccum Fusarium

Memnoniella Myxomycetes

Pithomyces Stachybotrys Stemphylium

Torula Ulocladium

Total

13 4905441 Hallway East

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

5 67 100.0%

5 67 100%

14 4905627 1st Floor Suite 110 Office

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

2 27 100.0%

2 27 100%

15 4905487 1st Floor 109 Office

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 100.0%

1 13 100%

16 4905515 Basement Hallway West

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

2 27 66.7%

1 13 33.3%

3 40 100%

Kamau McAbee Environmental Health Consultants, LLC 701 E. Pratt Street, Hall 3A Baltimore, MD 21202

(740) 274-1222

007-A USDA Building 007

#23000160

Spore Trap

SOP - HMC#101

Water Damage Indicator Common Allergen Slightly Higher than Baseline Significantly Higher than Baseline Ratio Abnormality

3005 East Boundary Terrace, Suite F. Midlothian, VA. 23112 (804) 562-3435 contact@hayesmicrobial.com Page: 5 of 10

Sample Name

Sample Volume Reporting Limit

Background Fragments

Organism

Alternaria Ascospores

Aspergillus|Penicillium Basidiospores

Bipolaris|Drechslera Chaetomium

Cladosporium Curvularia

Epicoccum Fusarium

Memnoniella Myxomycetes

Pithomyces Stachybotrys Stemphylium

Torula Ulocladium

Total

17 4905526 Basement - Hallway East

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 100.0%

1 13 100%

18 4905319 4th Floor - Office 405

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

1 13 50.0%

1 13 50.0%

2 26 100%

19 4905576 Outside Control

75 liter 13 spores/m³

ND

Raw Count Count / m3 % of Total

9 120 75.0%

2 27 16.7%

1 13 8.3%

12 160 100%

Kamau McAbee

701 E. Pratt Street, Hall 3A Baltimore, MD 21202

(740) 274-1222

007-A USDA Building 007

#23000160

Spore Trap

SOP - HMC#101

Water Damage Indicator Common Allergen Slightly Higher than Baseline Significantly Higher than Baseline Ratio Abnormality

3005 East Boundary Terrace, Suite F. Midlothian, VA. 23112 (804) 562-3435 contact@hayesmicrobial.com Page: 6 of 10

#20 Swab (1.00 cm2)

S1 - Duct Insulation

Reporting Limit: 1 spore/cm2

Organism Spore Estimate Mycelial Estimate Raw Count % Total

No Fungi Detected

#21 Swab (1.00 cm2)

S2 - Supply Diffuser

Reporting Limit: 1 spore/cm2

Organism Spore Estimate Mycelial Estimate Raw Count % Total

Cladosporium Very Heavy Many 88000 100%

#22 Swab (1.00 cm2)

S3 - Plaster Behind Cove Base - Lab 304

Reporting Limit: 1 spore/cm2

Organism Spore Estimate Mycelial Estimate Raw Count % Total

No Fungi Detected

#23 Bulk Direct (1.00 cm2)

B4 - Drywall Behind Cove Base - 304A

Organism Spore Estimate Mycelial Estimate

No Fungi Detected

#24 Swab (1.00 cm2)

S5 - Plaster Behind Cover Base 110C

Organism Spore Estimate Mycelial Estimate

No Fungi Detected

Kamau McAbee Environmental Health Consultants, LLC 701 E. Pratt Street, Hall 3A Baltimore, MD 21202

(740) 274-1222

007-A USDA Building 007

#23000160

Direct Analysis +, Direct Analysis

SOP - HMC#102

3005 East Boundary Terrace, Suite F. Midlothian, VA. 23112 (804) 562-3435 contact@hayesmicrobial.com Page: 7 of 10

Reporting Limit The Reporting Limit is the lowest number of spores that can be detected based on the total volume of the sample collected and the percentage of the slide that is counted. At Hayes Microbial, 100% of the slide is read so the LOD is based solely on the total volume. Raw spore counts that exceed 500 spores will be estimated.

Blanks Results have not been corrected for field or laboratory blanks.

Background The Background is the amount of debris that is present in the sample. This debris consists of skin cells, dirt, dust, pollen, drywall dust and other organic and non-organic matter. As the background density increases, the likelihood of spores, especially small spores such as those of Aspergillus and Penicillium may be obscured. The background is rated on a scale of 1 to 5 and each level is determined as follows:

NBD: No background detected due to possible pump or cassette malfunction. Recollect sample. (Field Blanks will display NBD) 1 : <5% of field occluded. No spores will be uncountable.

2 : 5-25% of field occluded.

3 : 25-75% of field occluded.

4 : 75-90% of field occluded.

5 : >90% of field occluded. Suggested recollection of sample.

Fragments Fragments are small pieces of fungal mycelium or spores. They are not identifiable as to type and when present in very large numbers, may indicate the presence of mold amplification.

Control Comparisons There are no national standards for the numbers of fungal spores that may be present in the indoor environment. As a general rule and guideline that is widely accepted in the indoor air quality field, the numbers and types of spores that are present in the indoor environment should not exceed those that are present outdoors at any given time. There will always be some mold spores present in "normal" indoor environments. The purpose of sampling and counting spores is to help determine whether an abnormal condition exists within the indoor environment and if it does, to help pinpoint the area of contamination.

Spore counts should not be used as the sole determining factor of mold contamination. There are many factors that can cause anomalies in the comparison of indoor and outdoor samples due to the dynamic nature of both of those environments.

Water Damage Indicator

Common Allergen

Slightly Higher than Baseline

Significantly Higher than Baseline

Ratio Abnormality

Blue: These molds are commonly seen in conditions of prolonged water intrusion and usually indicate a problem.

Green: Although all molds are potential allergens, these are the most common allergens that may be found indoors.

Orange: The spore count is slightly higher than the outside count and may or may not indicate a source of contamination.

Red: The spore count is significantly higher than the baseline count and probably indicates a source of contamination.

Violet: The types of spores found indoors should be similar to the ones that were identified in the baseline sample. Significant increases (more than 25%) in the ratio of a particular spore type may indicate the presence of abnormal levels of mold, even if the total number of spores of that type is lower in the indoor environment than it was outdoors.

Color Coding Fungi that are present in indoor samples at levels lower than 200 per cubic meter are not color coded on the report, unless they are one of the water damage indicators.

Kamau McAbee Environmental Health Consultants, LLC 701 E. Pratt Street, Hall 3A Baltimore, MD 21202

(740) 274-1222

007-A USDA Building 007

#23000160

Spore Trap Information

3005 East Boundary Terrace, Suite F. Midlothian, VA. 23112 (804) 562-3435 contact@hayesmicrobial.com Page: 8 of 10

Spore Estimate Percentages

ND None Detected 0%

Rare Less than 10 spores < 1%

Light 10 - 99 spores 1-10%

Moderate 100 - 999 spores 11-25%

Heavy 1000 - 9999 spores 26-50%

Very Heavy 10000 or greater spores 51-100%

Mycelial Estimate

ND None Detected No active growth at site.

Trace Very small amount of Mycelium Probably no active growth at site.

Few Some Mycelium Possible active growth at site.

Many Large amount of Mycelium Probable active growth at site.

Kamau McAbee Environmental Health Consultants, LLC 701 E. Pratt Street, Hall 3A Baltimore, MD 21202

(740) 274-1222

007-A USDA Building 007

#23000160

Direct Analysis Information

3005 East Boundary Terrace, Suite F. Midlothian, VA. 23112 (804) 562-3435 contact@hayesmicrobial.com Page: 9 of 10

Ascospores

Habitat: A large group consisting of more than 3000 species of fungi. Common plant pathogens and outdoor numbers become very high following rain. Most of the genera are indistinguishable by spore trap analysis and are combined on the report.

Effects: Health affects are poorly studied, but many are likely to be allergenic.

Aspergillus|Penicillium

Habitat: The most common fungi isolated from the environment. Very common in soil and on decaying plant material. Are able to grow well indoors on a wide variety of substrates.

Effects: This group contains common allergens and many can cause hypersensitivity pneumonitis. They may cause extrinsic asthma, and many are opportunistic pathogens. Many species produce mycotoxins which may be associated with disease in humans and other animals. Toxin production is dependent on the species, the food source, competition with other organisms, and other environmental conditions.

Basidiospores

Habitat: A common group of Fungi that includes the mushrooms and bracket fungi. They are saprophytes and plant pathogens. In wet conditions they can cause structural damage to buildings.

Effects: Common allergens and are also associated with hypersensitivity pneumonitis.

Cladosporium

Habitat: One of the most common genera worldwide. Found in soil and plant debris and on the leaf surfaces of living plants. The outdoor numbers are lower in the winter and often relatively high in the summer, especially in high humidity. The outdoor numbers often spike in the late afternoon and evening. Indoors, it can be found growing on textiles, wood, sheetrock, moist window sills and in HVAC supply ducts.

Effects: A common allergen, producing more than 10 allergenic antigens and a common cause of hypersensitivity pneumonitis.

Kamau McAbee Environmental Health Consultants, LLC 701 E. Pratt Street, Hall 3A Baltimore, MD 21202

(740) 274-1222

007-A USDA Building 007

#23000160

Organism Descriptions

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