Our Investigative Approach
Environmental assessment is a comprehensive, evidence-based process — not simply mold testing.
A Comprehensive, Evidence-Based Approach
Every building tells a story. Understanding that story requires more than a visual inspection or a collection of laboratory samples.
Our investigations follow a systematic, hypothesis-driven methodology that integrates building history, construction characteristics, moisture dynamics, HVAC conditions, targeted environmental testing, and laboratory findings.
The process is not always linear. New findings may lead to additional investigation, revised hypotheses, or changes in remediation recommendations. Each phase builds on the available evidence, helping us develop a more complete understanding of the building and the conditions affecting its indoor environment.
Our commitment extends beyond identifying problems. We provide guidance throughout the investigative and corrective process, from the initial assessment through remediation and post-remediation verification.
Phase 01
Building History & Background
Understanding the building's story.
Every investigation begins with understanding the property's history, construction, and known environmental concerns.
We review the age of the building, construction methods and materials, previous water intrusion, plumbing failures, renovations, additions, past environmental testing, and prior remediation.
We also consider the occupants' concerns, including the timeline of reported health symptoms in relation to occupancy, building events, or changes in the indoor environment.
This information helps identify potential areas of concern, establish investigative priorities, and guide the initial assessment.
Phase 02
Hypothesis Development
Asking the right questions before choosing the tests.
Based on the building's history, available information, and preliminary observations, we develop working hypotheses about potential moisture sources, concealed contamination, and pathways through which contaminants may affect occupied spaces.
These hypotheses guide the investigation, helping determine where to inspect, what to measure, and which diagnostic methods or laboratory tests may provide meaningful information.
Rather than collecting samples without a defined objective, we use testing strategically to evaluate specific investigative questions.
Importantly, hypotheses are not conclusions. They are working explanations that must be evaluated against the available evidence and revised when findings warrant.
Phase 03
Moisture & Building Envelope Investigation
Identifying moisture sources and concealed building conditions.
Moisture intrusion and excessive moisture accumulation are fundamental contributors to microbial growth and building-material deterioration.
We evaluate potential moisture sources, water-intrusion pathways, condensation, and conditions that may allow moisture to accumulate within building assemblies.
Our investigations may include visual assessment, moisture measurements, infrared thermography, evaluation of exterior building-envelope details, and examination of accessible attics, crawlspaces, wall cavities, and flooring assemblies.
When conditions suggest concealed damage, additional investigation may be necessary. This can include selective exploratory openings, diagnostic water testing, plumbing investigations, or coordination with qualified specialists.
Our objective is not simply to identify where moisture is present, but to understand where it originates, how it travels through the building, and which materials may have been affected.
Phase 04
HVAC System Evaluation
Understanding the HVAC system's influence on indoor environmental quality.
Heating, ventilation, and air-conditioning systems can influence the indoor environment through air movement, filtration, moisture accumulation, and the potential distribution of contaminants.
We evaluate accessible HVAC components, including air-handling equipment, evaporator coils, supply and return plenums, ductwork, filtration systems, and associated materials.
Particular attention is given to evidence of condensation, water damage, suspected microbial growth, accumulated debris, air leakage, and conditions that may contribute to contamination or its distribution.
When indicated, targeted environmental sampling may be performed to help characterize suspected contamination. Mechanical performance concerns are referred to qualified HVAC professionals for additional evaluation.
Phase 05
Targeted Environmental Sampling
Collecting meaningful evidence—not simply more samples.
Environmental sampling is a tool used to investigate specific questions, evaluate suspected contamination, and better characterize conditions within the building.
Our sampling strategies are developed based on the building's history, onsite observations, investigative hypotheses, and the client's particular concerns.
Depending on the circumstances, methods may include fungal DNA analysis (MSqPCR), settled-dust sampling, air and surface sampling, viable microbial sampling, Mycometer analysis, and specialized testing for other environmental contaminants.
We explain the purpose and limitations of recommended testing, allowing clients to make informed decisions before samples are collected.
Our objective is to collect sufficient, appropriately selected samples to support meaningful conclusions—not to rely on predetermined testing packages or unnecessary sampling.
Phase 06
Laboratory Interpretation & Integration of Findings
Understanding what the results mean within the context of the building.
Laboratory results provide valuable information, but their significance depends on how they relate to the building's history, construction, moisture conditions, and other investigative findings.
We evaluate the types and concentrations of organisms or contaminants identified, their distribution throughout the building, and their relationship to potential contamination sources.
Where appropriate, we compare findings with outdoor reference samples, other areas of the building, and available historical data, while considering the limitations of each analytical method.
Results are evaluated alongside the evidence collected during the onsite investigation.
When laboratory findings do not align with initial expectations, we revisit our hypotheses and consider whether further investigation is warranted.
Our written reports explain the findings, their potential significance, investigative limitations, and recommended next steps in language clients and their healthcare providers can understand.
Phase 07
Remediation Planning & Corrective Recommendations
Developing a clear, coordinated path forward.
When environmental conditions warrant corrective action, we develop project-specific recommendations addressing the identified contamination, underlying moisture sources, and affected building materials.
Our recommendations may include additional source investigations, moisture corrections, selective or extensive material removal, cleaning procedures, containment requirements, HVAC corrective measures, and appropriate sequencing of work.
We distinguish between conditions that may be addressed through routine maintenance or qualified trade repairs and those requiring professional remediation under controlled conditions.
Remediation protocols establish the environmental objectives and criteria against which the completed work will be evaluated.
Our role is to provide independent environmental guidance while coordinating, as appropriate, with remediation contractors, building specialists, and other qualified professionals responsible for performing the work.
Phase 08
Ongoing Investigation & Remediation Guidance
Remaining involved as new information emerges.
Environmental investigations do not always end when remediation begins.
Concealed conditions may only become visible after walls are opened, flooring is removed, or other building assemblies become accessible. These discoveries may reveal additional contamination, previously unidentified moisture pathways, or conditions requiring changes to the original remediation scope.
We remain available throughout the process to evaluate newly exposed conditions, refine recommendations, coordinate with the remediation team, and help ensure that corrective efforts remain consistent with the project's environmental objectives.
This ongoing involvement is particularly important on complex projects and in homes occupied by medically sensitive individuals.
Our role is to provide continuity from the initial investigation through corrective work, rather than leaving clients to interpret new findings and navigate changes in the remediation process on their own.
Phase 09
Post-Remediation Verification (PRV)
Independently evaluating the results of remediation.
Post-Remediation Verification is an independent assessment conducted after remediation to determine whether the specified environmental objectives have been achieved.
Verification may include visual inspection, evaluation of cleanliness and moisture conditions, review of accessible source corrections, and targeted environmental sampling when appropriate.
For mold remediation, a primary objective is to evaluate whether the remediated areas have been returned to Condition 1, or normal fungal ecology, consistent with the principles of ANSI/IICRC S520.
If deficiencies or remaining concerns are identified, we document those findings and provide recommendations for additional corrective measures before subsequent verification.
PRV evaluates the conditions observed and tested at the time of assessment. It does not establish medical safety for every individual or guarantee that future contamination will not occur.
Beyond Remediation | Environmental Cleaning & Follow-Up Assessment
Supporting the transition toward a restored indoor environment.
Depending on the building's conditions, project scope, and occupant concerns, additional environmental cleaning and follow-up testing may be appropriate after remediation.
This may include guidance regarding Small Particle Cleaning (SPC), evaluation of areas outside the original remediation containments, and environmental sampling to establish updated baseline conditions.
These activities have objectives distinct from the verification of remediated areas and are recommended based on the circumstances of the individual project.
Our goal is to help clients understand their options, evaluate the available evidence, and make informed decisions as they move toward the completion of corrective work.
Every Building Is Different. Every Investigation Should Be, Too.
A comprehensive investigation is our preferred approach, particularly when working with medically sensitive individuals. However, we recognize that clients may have different objectives, priorities, and practical limitations.
When an assessment is limited or performed in phases, we explain the implications of those decisions, including what may remain unknown and how those limitations may affect the interpretation of findings.
Our commitment is to provide thoughtful, evidence-based guidance throughout the process—helping clients understand not only what we find, but what it means and what comes next.