When a homeowner in Biddeford, Maine, noticed a persistent musty odor and worsening allergy symptoms, they reached out to Evergreen Air Quality Services for help. What began as a simple concern quickly revealed a more serious issue—hidden mold growth behind walls and under flooring due to long-term moisture buildup. This case study details how Evergreen’s team identified the source, coordinated the residential mold remediation process with an IIRC certified remediator, and restored safe, breathable air to the home.
The Problem: Health Concerns Trigger a Mold Investigation
In April 2024, a concerned homeowner in Biddeford, ME, contacted Evergreen Air Quality Services after a family member developed respiratory symptoms while sleeping in a basement bedroom. Suspecting indoor mold growth, the homeowner requested a professional inspection to assess potential risks.
Our team conducted a full evaluation and discovered elevated airborne mold spore levels on both the basement and main floor, with Aspergillus/Penicillium species dominating the samples. These findings indicated an urgent need to begin a structured mold remediation process to protect the health of the occupants.
Initial Testing Results: High Mold Spore Counts
Air and surface samples were collected using Allergenco D spore trap cassettes and sent to EMSL Analytical for evaluation. The lab results confirmed high levels of indoor mold:
- Basement Right (A1): 32,100 spores/m³ Aspergillus/Penicillium (99.1%)
- Basement Left (A2): 26,500 spores/m³ Aspergillus/Penicillium (99.8%)
- Main Floor (A3): 1,400 spores/m³ Aspergillus/Penicillium (78.2%)
- Outdoor Control (A4): 40 spores/m³ Aspergillus/Penicillium (1%)
A surface sample (T1) taken from under the basement stairs revealed significant mold colonization, including Chaetomium, Cladosporium, and Ophiostoma, along with visible fungal structures, further supporting the need for remediation.
The Mold Remediation Process: Evergreen’s Step-by-Step Recommendation
Once testing confirmed widespread contamination, Evergreen recommended a comprehensive mold remediation process. This action plan was performed by an IIRC certified remediator that included:
- Isolation of affected areas using containment barriers
- Installation of negative air pressure machines to prevent cross-contamination
- Full removal of mold-contaminated drywall, insulation, and organic materials
- Decontamination of the basement and attic using HEPA vacuuming, antimicrobial treatments, and fogging
- Deployment of air scrubbers and dehumidifiers to control indoor moisture levels
- Strict adherence to safety protocols, including personal protective equipment for all technicians
This methodical approach ensured that all mold sources were eliminated, not just treated on the surface.
Post-Remediation Testing and Final Verification
After initial cleanup, a post-remediation inspection was performed. While mold spore levels had dropped significantly, trace amounts were still detected in the basement. As part of Evergreen’s quality assurance, a second round of cleaning and containment was carried out, focusing on the basement bedroom and attic.
Final Testing Results
Following the second phase of the mold remediation process, Evergreen conducted comprehensive testing:
- Indoor air spore levels were now at or below the outdoor baseline
- No toxigenic or pathogenic mold species were present
- Surface samples tested clean, with no fungal structures detected
- Moisture readings in all affected areas measured below 15%, indicating dry, stable conditions
- No musty odors or visible mold were observed
Clearance documentation was issued, certifying the home as safe for occupancy.
Outcome: Safe, Restored Living Environment
This case demonstrates how Evergreen’s thorough mold remediation process restores indoor air quality and protects occupant health. Thanks to our comprehensive testing, proven remediation recommendations, and commitment to excellence, the Biddeford homeowner was able to reoccupy their home with peace of mind.
Schedule Your Mold Assessment Today
Mold issues are more than cosmetic—they’re a serious health and structural concern. Our residential mold remediation services ensure your home is not only clean, but also safe and compliant. Whether you’re dealing with visible mold, musty odors, or unexplained health symptoms, Evergreen Air Quality Services is here to help.
If you suspect mold in your home, don’t wait. Contact Evergreen Air Quality Services for a certified inspection and customized mold remediation process plan.
