ERMI & HERTSMI-2 Dust Testing in Antioch, CA
qPCR dust analysis, collected correctly and interpreted honestly — for households in Antioch and across Contra Costa County, held to the sensitized-occupant standard and independently verified.
Why this matters in Antioch
Generic national advice breaks on local construction. This page maps the service to how Antioch homes are actually built — and to providers serving Contra Costa County who work these exact failure modes.
East delta heat with winter tule fog drifting off the San Joaquin. 1990s–2000s stucco tracts; window-flashing vintages and HVAC condensate lines account for a large share of casework.
Where the work starts in Antioch
- Fog-side and north-facing elevations for chronic condensation loading
- Stucco penetrations, weep screeds, and window-flashing terminations
- Air-handler coil, plenum interior, and condensate management
- Window and deck-to-wall waterproofing details by construction vintage
- Ground-moisture entry paths in high-water-table and flood-history sections
What's included
- Collection planning: composite versus room-specific sampling matched to the question
- Proper collection sites: undisturbed dust reservoirs, not floors or fresh surfaces
- Accredited-lab qPCR analysis of water-damage and outdoor marker species
- Species-level interpretation against building findings, not just the composite score
- Baseline documentation for valid post-remediation comparison
- A single hallway air cassette sold as a building screen
- Scores interpreted without any building context
- No documentation of collection sites and method
A defensible answer to 'is this building a problem' with species-level detail that directs the inspection — and a baseline your final clearance will be measured against.
Common questions
How does matching work for ermi & hertsmi-2 dust testing in Antioch?
Tell us about your building and situation through the intake form. We match you with providers serving Contra Costa County who have been vetted on containment discipline, fine-particle competence, written-scope transparency, and willingness to be independently verified. Matching is free for households.
Why does local building knowledge matter in Antioch?
East delta heat with winter tule fog drifting off the San Joaquin. 1990s–2000s stucco tracts; window-flashing vintages and HVAC condensate lines account for a large share of casework. Providers who work these exact failure modes find sources faster and scope work more accurately than generalists applying a national template.
What standard is the work held to?
The sensitized-occupant standard: written scopes, verified negative-pressure containment where remediation is involved, no fogging or biocide-and-leave treatments, chemical disclosure, and third-party verification as the release condition for final payment.
Get matched for ermi & hertsmi-2 dust testing in Antioch
Tell us about your house and your situation. We match you with contractors vetted on containment discipline, fine-particle competence, and willingness to be independently verified — in your area, at no cost to you.
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