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For most lead, asbestos, and mold inspections, residents can safely remain in the home while testing is performed. McConnell Environmental Consulting (MEC) takes precautions to minimize disturbance and prevent occupants from coming into contact with the materials being sampled.
For asbestos testing, only a small amount of material is typically needed for laboratory analysis. MEC uses controlled sampling techniques designed to minimize the potential release of asbestos fibers and seals or otherwise stabilizes the sampled location when appropriate. As an added precaution, residents, children, and pets are asked to remain away from the immediate sampling area while the sample is being collected.
For lead testing, MEC minimizes disturbance of painted surfaces and takes precautions to prevent paint chips or dust from spreading into occupied areas. Residents should avoid the immediate sampling location during collection, and particular care is taken when children or pets are present because they are more likely to come into contact with floors, windowsills, and other surfaces where lead-containing dust can accumulate.
For mold testing, air and surface sampling is generally minimally invasive and does not require residents to leave the property. MEC avoids unnecessarily disturbing visible mold growth, which can release additional spores into the air. Residents may be asked to stay out of a particular room temporarily if conditions warrant additional precautions.
In most cases, you do not need to vacate your home for routine environmental testing. MEC will explain any precautions that should be taken before beginning the inspection. If conditions are encountered that could present an increased risk to occupants, we will stop or modify the work and discuss the appropriate next steps with you before proceeding.
Our goal is to obtain accurate results while keeping you, your family, your pets, and your property safe throughout the inspection and sampling process.
For detailed information regarding pricing, payment options, laboratory fees, and expedited services, please visit our payment and costs page.
If your renovation or demolition project will disturb building materials that could contain asbestos, testing may be necessary or strongly recommended before work begins.
Asbestos can be present in many common building materials, including drywall joint compound, plaster, flooring, floor mastics, ceiling textures, roofing materials, pipe insulation, HVAC materials, caulking, and other construction products.
The age of a building alone should not be used to determine whether a material contains asbestos. Even newer buildings can contain asbestos-containing materials.
Testing before construction can help identify asbestos-containing materials before they are disturbed, allowing the project team to plan appropriately and avoid unexpected delays, contamination, or regulatory issues.
MEC provides asbestos surveys and bulk material sampling throughout the San Francisco Bay Area and Northern California
A J Report, sometimes referred to as an Asbestos Survey Report or Form J, is documentation used in the San Francisco Bay Area to report the results of an asbestos survey performed before certain renovation or demolition activities. It is commonly requested by contractors, building departments, and other parties to document whether asbestos-containing materials are present in areas that will be disturbed.
The report identifies the materials inspected and sampled, summarizes laboratory results, and documents whether asbestos-containing material (ACM) was identified. Depending on the project and applicable regulatory requirements, the report may need to be prepared or signed by a qualified individual.
J Reports are particularly common for renovation and demolition projects within the jurisdiction of the Bay Area Air District (BAAD; formerly known as the Bay Area Air Quality Management district [BAAQMD]) , where asbestos requirements may apply before building materials are disturbed.
McConnell Environmental Consulting (MEC) can perform asbestos inspections and sampling, coordinate accredited laboratory analysis, and provide the appropriate documentation for your project.
Not sure whether your project requires a J Report? Contact MEC with your project location and a brief description of the planned renovation or demolition, and we can help determine what type of asbestos inspection and documentation may be appropriate.
Point counting is a more quantitative analytical technique that may be used to obtain a more precise estimate of the percentage of asbestos within certain bulk building-material samples.
Standard Polarized Light Microscopy (PLM) analysis may initially identify a material as containing a relatively low concentration of asbestos. When the reported concentration is near an important regulatory threshold, additional analysis may be appropriate.
Point counting involves evaluating a larger number of systematically selected points within the prepared sample to develop a more refined estimate of asbestos concentration.
Depending on the project and applicable requirements, point counting can be particularly useful when an initial PLM result is close to 1% asbestos or another concentration that may affect how a material is classified or managed.
However, point counting is significantly more expensive than the more commonly used PLM method. For this reason, PLM is typically performed as the initial analytical method. If PLM results identify asbestos at a low concentration near an important regulatory threshold, point counting may then be performed to provide a more precise quantitative estimate of the asbestos content and determine whether the material falls above or below the applicable threshold.
During an asbestos inspection, representative samples of suspect building materials are carefully collected from the areas relevant to the proposed work or investigation.
Unfortunately, bulk sampling requires the physical removal of a small portion of the suspect material for laboratory analysis, which may result in minor, localized damage. MEC makes every effort to collect samples from inconspicuous or minimally disruptive locations whenever possible, such as corners, edges, closets, or areas that are already damaged or scheduled for renovation. While some disturbance is unavoidable with bulk sampling, MEC strives to minimize the visual and physical impact of each sample location.
Samples are labeled, documented, and submitted to a qualified laboratory for analysis, commonly using Polarized Light Microscopy (PLM).
The number of samples required depends on the materials present, their locations, whether materials are homogeneous, the size of the affected areas, and applicable sampling requirements.
Simply collecting one sample from an entire building is generally not sufficient to characterize all potentially different materials.
No.
An asbestos survey or sampling investigation applies to the materials and areas included within the scope of the inspection. A negative laboratory result for one material does not establish that every material throughout a property is asbestos-free.
Materials that were inaccessible, concealed, outside the project area, or otherwise not sampled may require additional evaluation before they are disturbed.
These terms are often confused.
A laboratory may detect lead in a painted surface even when the concentration does not meet the regulatory definition of lead-based paint applicable (often 5,000 parts per million [ppm]) to a particular program. This distinction can be important during property evaluations, renovation planning, and construction projects.
A laboratory may detect lead in a painted surface even when the concentration does not meet the regulatory definition of lead-based paint applicable (often 5,000 parts per million [ppm]) to a particular program. This distinction can be important during property evaluations, renovation planning, and construction projects.
A result showing detectable lead should therefore not automatically be described as "lead-based paint." Laboratory concentrations should be compared with the appropriate regulatory criteria and evaluated in the context of the project.
Not necessarily.
A paint sample that does not meet a particular regulatory definition of lead-based paint can still contain measurable lead.
Construction activities such as sanding, grinding, demolition, cutting, or abrasive preparation can generate lead-containing dust even when the original coating contains relatively low concentrations.
The applicable requirements depend on the type of project, workers involved, building use, and lead concentration.
MEC can collect representative paint-chip samples from painted surfaces and submit them to a qualified laboratory for quantitative lead analysis.
Sampling locations are selected based on factors such as substrate, paint color, component type, condition, location, and apparent construction history.
Depending on the investigation, lead evaluation may also include dust-wipe sampling, soil sampling, or other testing.
An Air-O-Cell cassette is commonly used to collect airborne particles, including fungal spores, from indoor and outdoor air.
A calibrated sampling pump draws a known volume of air through the cassette. Airborne particles impact onto a collection surface inside the cassette, which is then examined by a laboratory.
The laboratory identifies and quantifies various fungal structures observed in the sample.
Indoor samples can then be evaluated alongside outdoor/background samples and observations made during the inspection.
Air sampling is one tool used during a mold investigation, but results should not generally be interpreted by themselves.
Mold investigations may consider:
A professional interpretation considers the laboratory data together with conditions observed at the property.
A tape-lift sample is a surface sampling method used to evaluate suspected fungal growth.
A specialized adhesive sampling medium is applied to the surface of interest and then submitted to a laboratory for microscopic examination.
Tape samples can be particularly useful when discoloration or suspected fungal growth is visible because they allow the laboratory to directly examine material present on that surface.
Not necessarily.
There is no single universal indoor mold concentration that determines whether every building is "safe" or "unsafe."
Results should be interpreted based on the fungal types identified, indoor/outdoor relationships, individual sampling locations, visible conditions, moisture sources, and other site-specific information.
MEC evaluates laboratory findings in conjunction with observations from the property rather than relying solely on a single numerical result.
Radon is a naturally occurring radioactive gas produced by the decay of uranium in soil and rock.
Because radon is colorless and odorless, testing is the only practical way to determine the concentration within a building.
Radon concentrations can vary significantly between neighboring properties, which means the result from one home should not be assumed to represent another.
Indoor air quality testing can involve many different parameters depending on the concern.
An investigation may include evaluation or sampling for contaminants such as:
There is no single test that evaluates every aspect of indoor air quality. MEC works with clients to determine which testing methods are appropriate for their particular concerns.
McConnell Environmental Consulting (MEC) works with established environmental analytical laboratories selected based on the type of testing required, project location, analytical method, turnaround time, and specific needs of each investigation.
When required, MEC uses laboratories that hold the appropriate certifications and accreditations for the requested analytical method, including California Environmental Laboratory Accreditation Program (ELAP) accreditation where applicable.
Using independent third-party laboratories allows MEC to provide clients with objective analytical results while selecting the laboratory and analytical method best suited to each project.
For specialized analyses, MEC may also utilize other qualified laboratories when their capabilities, certifications, location, or turnaround times are better suited to the particular investigation.
Contact McConnell Environmental Consulting (MEC) by phone, email, or yelp and provide a brief description of the property, location, environmental concern,.
If you have photographs, construction plans, contractor scopes, previous environmental reports, or laboratory results, providing those documents can also help MEC determine the appropriate scope of work
Turnaround time depends on the type of analysis and laboratory availability.
Standard laboratory turnaround is commonly approximately 5–10 business days, although certain analyses may take longer.
For many analytical methods, expedited options may also be available, including approximately:
Rush laboratory analysis involves additional costs, with faster turnaround generally resulting in higher laboratory fees.
Availability must be confirmed with the laboratory.
MEC's standard report preparation time is approximately 5 business days after all applicable laboratory results have been received.
Clients who require a completed report within approximately 1–2 business days following receipt of the laboratory results may request expedited reporting for an additional $75 fee, subject to availability.
Laboratory rush fees and MEC expedited report fees are separate.