How to Get a Suspect Material Tested Without Becoming the Sampler

Why this matters

Once a suspect material sits in the path of the work, only a lab result settles it. The shop's job is to get that result into the customer's hands and back into the scope without the shop's own techs cutting a piece off and mailing it in. That shortcut feels efficient and carries everything wrong with it: the cut is the disturbance, the tech may not be allowed to take it, a single grab of the top layer can return a clean result over a dirty layer, and the shop ends up owning a sample it had no business collecting. The better path takes a phone call and a few business days, and it produces a report everyone can rely on.

This card covers who samples, who analyzes, how the customer arranges it, and how the result changes your scope. Recognizing the material and photographing it are owned by sibling cards; abatement itself belongs to licensed contractors.

Who samples

Asbestos. The person who takes the sample should be a trained, accredited asbestos inspector, and in many states a state-licensed one. The federal accreditation scheme (EPA's Model Accreditation Plan, 40 CFR Part 763, Subpart E) is required for inspections in schools and in public and commercial buildings; single-family homes are generally outside that federal requirement, and the state layer decides the rest. States run from requiring a state-licensed inspector to survey before renovation in a wide range of buildings, to leaving a single-family owner free to sample their own home while barring a contractor from doing it for them. Check your state's asbestos program before advising a customer; this is not legal advice, and where the rule is unclear the state program's office answers the question in one call.

Lead paint. Lead inspections and risk assessments are done by inspectors and risk assessors certified under 40 CFR Part 745, Subpart L, or by an EPA-authorized state program, usually with an XRF analyzer that reads lead in paint without removing it, or with paint-chip samples sent to a lab. The one place a contractor legitimately tests is narrower: under the RRP rule, an RRP-certified renovator may use an EPA-recognized test kit or collect paint-chip samples to determine whether the components being worked on are lead-free. That is a certified renovator acting under the rule, not a tech improvising. The EPA RRP card in this library owns the detail.

Vermiculite. EPA's guidance for vermiculite attic insulation is to assume it may contain asbestos and leave it undisturbed. Sampling it is less straightforward than sampling a uniform material, because fibers are not spread evenly, and the sibling vermiculite card owns that question.

Who analyzes, and how

Asbestos bulk samples go to a lab accredited for bulk asbestos analysis, typically through the NIST National Voluntary Laboratory Accreditation Program (NVLAP) or the AIHA laboratory accreditation program. The standard method is polarized light microscopy (PLM), under EPA's bulk-sample method (EPA/600/R-93/116): an analyst identifies fibers by their optical properties and estimates the percentage of each asbestos type. Federal rules define asbestos-containing material as more than 1 percent asbestos; some states draw the line lower for some purposes (Cal/OSHA, for example, regulates construction materials above 0.1 percent). Two refinements come up often:

• Point counting. For a result visually estimated under 10 percent, the inspector may ask the lab to point count, a more precise counting method that can move a low result to either side of 1 percent.
• TEM for floor tile and mastic. Vinyl floor tile, mastics and similar binders can hide fine fibers from PLM and return a false negative. Some states require a negative PLM result on these materials to be confirmed by transmission electron microscopy (New York is one).

Lead paint chips go to a lab recognized under EPA's National Lead Laboratory Accreditation Program (NLLAP).

You do not choose any of this. The inspector does. What you need to know is enough to read the report and to recognize when a result is weaker than it looks.

The steps

1. Stop the part of the work that touches it. Before anything else, the work that would disturb the material comes off today's list, as set out in the sibling card on planning around a suspect material. Skip it and the test result arrives after the cut.

2. Hand the customer the photo record and a short scope note. The photos and measurements from your record, plus one paragraph naming the material, where it is, and what your work needs to do to it (cut six openings, remove 9 feet of wrap, drill through it). The inspector uses that to decide what to sample. Skip it and the inspector samples the wrong area, or the right material in the wrong layer.

3. Tell the customer how to find an inspector. The state's asbestos or lead program publishes a list of licensed or accredited inspectors; the lab's own online directory lists accredited labs. The customer hires the inspector, not the shop. Many shops keep two or three local inspectors' names on file; give names, not a referral fee arrangement. Why the customer hires: the inspector's duty runs to their client, and the report should not look like it was bought to clear your job. Skip it and a disputed result lands on the shop.

4. Set the expectation on time. Standard lab turnaround is usually a few business days after the samples arrive; most labs offer rush service in a day or less at a higher fee. Add the inspector's scheduling. Put the deferred piece of your job on a tentative date after that.

5. Read the report against your scope. The report lists each sample by ID, its location, its homogeneous area (a stretch of material that looks and was installed the same way) and each layer separately, with a result such as "none detected" or a percentage and fiber type. Match each sample location to your photo record. Then read the rule that matters most: if any sample in a homogeneous area is positive, the inspector will normally treat the whole area as positive. Skip it and you read "two of three none detected" as a pass.

6. Turn the result into a scope decision. All layers none detected in every area your work touches: the deferred work goes back on the schedule, and the report goes in the job record. Any positive layer your work cuts through: the disturbing part goes to a licensed abatement contractor, who removes or controls the material, and your work resumes only after their clearance. The resume step carries its check: before your crew returns, the written clearance (the abatement contractor's completion record, and an air clearance result where the state or the project requires one) is in hand and names the area your work touches.

Worked example: recessed lights in a textured ceiling

An electrician is asked to add six recessed lights to the living room ceiling of a 1972 house. The ceiling has a sprayed texture over drywall. The electrician photographs it, records it as suspect texture over joint compound, and defers the cutouts. See related: Textured Ceilings and Old Joint Compound.

The customer calls the office.

CUSTOMER: Can't your guy just scrape a bit and
  send it to a lab? It's six little holes.
OFFICE: He could make the holes in an hour. The
  scraping is the part we don't do. It's the
  same dust the test is about, and in our state
  it's an inspector's job, not ours.
CUSTOMER: So who do I call?
OFFICE: I'll email you the state's list of
  inspectors and two we've worked with, plus his
  photos so they know where to sample. You hire
  them. The lab usually turns it around in a few
  business days.
CUSTOMER: And if it comes back bad?
OFFICE: Then we talk about who cuts the holes and
  whether you'd rather go with surface lights.
  You won't be stuck either way.

The inspection. The inspector treats the living room ceiling as one homogeneous area and takes three samples, each analyzed by PLM in two layers: the texture and the joint compound underneath.

The report.

• Texture: none detected in all three samples.
• Joint compound: none detected in two samples; 2 percent chrysotile in the third.

Reading it. The top layer is clean. A tech who had scraped a little texture into a bag would have sent in exactly that layer and called the ceiling clear. But every cutout goes through both layers, and the joint compound layer has one positive sample at 2 percent, above the federal 1 percent line. The inspector reports the joint compound in that ceiling as asbestos-containing; one positive in the homogeneous area carries the area. The inspector notes that point counting could refine a result this low and recommends treating it as positive for planning, which the customer accepts rather than paying for more lab time.

The scope decision. Two options go back to the customer in writing. Option one: a licensed abatement contractor makes the six cutouts under their controls, and the electrician installs the cans after the contractor's completion record and clearance. Option two: surface-mounted low-profile fixtures on existing boxes or new ones fed from the attic above, with no cut through the ceiling, which changes the electrician's scope and must itself be checked against whatever is in the attic. The customer picks option one. The electrician's labor stays as quoted; the abatement is priced and contracted by the customer directly.

What would have changed the call. All six samples none detected, and the cutouts go back on the calendar at the original scope, report attached to the job. A state that requires TEM confirmation for this kind of material, or a lab note that the joint compound had too little material to analyze, means "none detected" is not yet the answer, and the inspector decides what follows.

References

• See related: How to Photograph and Record a Suspect Material; How to Plan Work Around a Suspect Material You Cannot Test Today
• See related: EPA Lead RRP Rule for Contractors; Vermiculite Attic Insulation and the Do-Not-Disturb Rule
• EPA Method EPA/600/R-93/116 (bulk asbestos by PLM); NIST NVLAP bulk asbestos accreditation
• 40 CFR Part 763, Subpart E (asbestos accreditation) and 40 CFR Part 745, Subparts E and L (RRP; lead inspectors and risk assessors)