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DocuSi n Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C <br /> E tnvironmeniai 3omuons uroup <br /> Leading people,companies and communities to live, Report with Protocols for Re m e d i a t i o n <br /> work and prosper in a sustainable environment. <br /> Post Remediation Verification (PRV) <br /> All of the organizations listed previously in this document recommended that a PRV, also known as clearance testing, be <br /> conducted by a mold professional not affiliated with the remediation firm. The Texas Guidelines require that the same <br /> equipment be used during the PRV as during the pre-remediation inspection. It is highly advisable and in the best <br /> interest of the property owner to follow these recommendations. <br /> A typical PRV includes a visual inspection for dust and mold residue, confirmation that the source of the moisture has <br /> been corrected, and air sampling under normal disturbed air conditions to confirm that concentrations of airborne and <br /> surface mold spores inside the remediated area of the building envelope meet the following industry guidelines as <br /> established by the American Society of Safety Engineers' Post-Remediation Evaluation Criteria for Mold Contamination <br /> (Professional Safety, November 2004). Airborne particle mass (PMlo) readings must be below the thresholds established <br /> by the EPA for healthy indoor air. <br /> The PRV should be scheduled to occur 24 hours following mold removal and before the remediation firm has pulled <br /> equipment out of the building. The remediated area must remain off-limits to any personnel other than the <br /> remediation team and testing firm until the PRV has been completed and clearance has been achieved. <br /> The remediation contractor cannot be held responsible for future growth of fungal colonies in the remediated area as <br /> new growth can be achieved with the reintroduction of moisture. In addition, a warranty to prevent future mold growth <br /> is provided by the manufacturer of chemicals that may been used during remediation and not the remediation <br /> contractor. <br /> The US EPA and OSHA recommend a follow-up inspection be conducted at some time period after the mold remediation <br /> has been completed. <br /> Environmental Solutions Group • 1000 N. Elm St., Greensboro, NC 27401 * 336-373-1538 • www.Go-ESG.com <br />