Independent Clearance Testing

Independent verification after mold remediation

After mold remediation, you need an independent check. ESG evaluates the designated remediation area against applicable visual, moisture, odor, particle, and laboratory clearance criteria at the time of inspection, with accredited lab results and a clear written report.

CIEC Certified Independent since 2002 ANSI/IICRC S520 Serving NC, VA, SC & TN
ESG technician in a full Tyvek suit and respirator with air sampling equipment

Comprehensive clearance testing

Every PRV follows ANSI/IICRC S520 standards and includes the inspection and sampling used to evaluate the remediated area against clearance criteria.

Visual inspection of remediated areas and containment
Air sampling inside and outside the work area
Surface sampling of cleaned materials
Accredited laboratory analysis of all samples
Moisture readings to confirm dry conditions
Pass/fail determination with independently reviewed report
Consultation to walk through results
ESG technician in a protective suit working a sampling device in a remediated area
Sterile swab drawn across a mold-affected surface for laboratory analysis
Illustration of an ESG clearance report: the cover page beside a recommendations page
Spore trap cassettes prepared for accredited laboratory analysis
Why it matters

Why your PRV tester must be independent

If the same company that did the remediation also does the clearance testing, there's a built-in conflict of interest. They profit from passing themselves.

ESG has never offered remediation services and never will. Our only job is to give you an honest answer: did the remediation work, or didn't it?

That independence is why our documentation is built to stand up to scrutiny, and why homeowners, property managers, and attorneys rely on our results.

We serve remediation contractors too. Independent clearance testing documents quality work, and our Verified Remediator program recognizes contractors whose work consistently passes PRV.

Schedule independent PRV
23+
Years independent testing
0
Remediation conflicts
CIEC
Certified consultants
2
Certified professionals review every report

Four steps to clearance

From scheduling to your final report, here's what to expect.

ESG professional reviewing property documents while scheduling a verification visit
1

Schedule your PRV

Call us after your remediator says the work is done. We'll coordinate timing to ensure containment is still in place.

ESG technician in a full suit and respirator operating the air sampling pump during clearance sampling
2

Onsite inspection & sampling

We visually inspect the work area, check containment, take air and surface samples, and measure moisture levels.

Seal stating that samples are analyzed by an accredited third-party laboratory
3

Lab analysis

Samples go to an accredited laboratory for analysis. Results are reviewed by a certified CIEC consultant.

Seal stating that clearance verification is carried out independently of the remediation contractor
4

Report & clearance

You receive a pass/fail determination with full documentation. We walk you through findings on a consultation call.

What causes a pass or fail?

What a passing PRV looks like

A pass means the remediated area meets acceptable conditions for reoccupation.

  • Indoor spore counts at or below outdoor baseline
  • No visible mold on remediated surfaces
  • Moisture levels within acceptable range
  • Containment properly maintained throughout work
  • Surface samples show no abnormal growth

Common reasons for a failing PRV

A fail means additional work is needed before the area can be cleared.

  • Indoor spore counts significantly exceed outdoor levels
  • Visible mold remaining on surfaces
  • Elevated moisture still present
  • Containment breached during remediation
  • Debris or contaminated material left behind

What our clients say

We are so grateful for the entire team at Environmental Solutions Group. ESG has come to our rescue multiple times over the years and saved us potentially devastating home damage and health consequences. Dan has extensive knowledge that he is generous to share with clients.
Homeowner · Repeat client
The 32-page report they provided has proven to be invaluable! From the moment they stepped into our home, the team provided a thorough and comprehensive report covering all areas with the utmost professionalism. Their attention to detail and expertise were immediately evident.
Homeowner

Common questions about clearance testing

When should I schedule PRV testing?

Schedule your PRV after the remediator tells you the work is complete but before containment is removed. This is critical: we need to test while the work area is still isolated.

How long does PRV testing take?

Most residential PRV inspections take 1 to 2 hours onsite. Lab results and your independently reviewed report are typically delivered within a few business days.

What happens if my PRV fails?

We'll document exactly what failed and why, then provide the remediator with specific guidance on what needs to be corrected. Once they complete additional work, we'll retest.

Is the remediator required to have PRV done?

ANSI/IICRC S520 standards call for independent PRV testing after professional remediation. Many insurance carriers also expect independent clearance documentation before closing a claim.

How much does PRV testing cost?

PRV pricing depends on the size of the remediated area and number of samples needed. Call 336-373-1538 for a free quote, and we'll give you a clear price before scheduling.

Can my remediator do the clearance testing?

They can, but they shouldn't. Independent third-party testing eliminates the conflict of interest and produces documentation built to stand up to scrutiny from insurers, courts, and future buyers.

ESG vehicles parked outside the company office in Greensboro, NC
Independent environmental testing across NC, VA, SC & TN.

Need independent clearance testing?

Schedule your PRV or call us for a free consultation. We'll walk you through exactly what to expect.

Call 336-373-1538 · Environmental@go-esg.com