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Laboratory Services

Accreditation and Qualifications

JLM Environmental laboratory services currently specializes in asbestos, lead, mold, and radon analysis.  We follow EPA methods to meet our individual clients' needs with accurate and reliable results. We are accredited by the National Voluntary Laboratory Asbestos Program (NVLAP) for bulk asbestos samples (NVLAP number). 

QUICK FACT: Asbestos can only be detected with laboratory testing. Contrary to common belief, it cannot be identified with plain sight.

Asbestos Building Materials Identification (PLM Analysis Method)

Polarized Light Microscopy (PLM) is a technique used for the analysis of bulk building materials. This technique utilizes polarized light to observe specific optical properties.  Our PLM analyst will distinguish asbestos from non-asbestos fibers and further classify and quantify the various species that compose the asbestos mineral family. Depending on the analytical results, if asbestos is detected, this would trigger certain regulatory requirements or laws that must be implemented during the handling, work practices and disposal of the material. Additionally, our analyst records the identity of the non-asbestos fibrous component of each bulk building material sample. PLM analysis, including PLM Point Count and PLM Gravimetric, are the most common EPA approved test methods for asbestos identification in bulk materials. 

  • PLM BULK EPA 600 Method
  • PLM Point Count EPA 600 Method
  • PLM Gravimetric & Point Count EPA 600 Method

Asbestos & Fiberglass Air Sampling (PCM Analysis Method)

PCM airborne fiber counting is widely used to meet contractor OSHA requirements, risk assessments, and final air clearances. The method gives an index of airborne fibers and is primarily used for estimating asbestos concentrations; this method may be used for other materials such as fiberglass.

  • PCM NIOSH 7400 Method
  • PCM NIOSH 7400 Method (Rule B)

Lead Building Materials (XRF Analysis Method)

X-ray Fluorescence (XRF) is used to determine the lead content in building materials. This method provides immediate results for

  • Paint
  • Dust
  • Soil
  • Air

Radon Air Sampling

Please see the Radon section in regards to the inspection and testing methods utilized by JLM Environmental. Our devices are considered to be much more reliable than store bought testing kits as our CRMs will provide accurate measurements of the temperature, barometric pressure, and radon levels every 30 minutes for the 48 hour duration as well as an overall average; the other methods will only give you an overall average. In addition, the CRMs are equipped with anti-tampering motion sensors which can detect if the machines have been moved (intentionally or accidentally).

  • Electronic Continuous Radon Monitor (CRM)

Mold Analysis (Non-Viable Direct Examination Method)

Non-viable samples refer to samples that are examined directly under a microscope (fungal direct examination) for enumeration and identification of mold spores and hyphal fragments without culturing. In other words, the samples are taken for analysis by direct microscopic examination. The results include spore counts for each category of spores and the grand total spore count. Currently, JLM Environmental subcontracts this service through an NVLAP accredited laboratory.

JLM Environmental offers the following methods of non-viable analysis:

  • Air Sampling
  • Bulk samples (e.g., drywall material, wallpaper, pieces of carpet, etc). 
  • Surface swabs
  • Tape-lift samples

Sample Submittal Options/Conditions

Samples can be hand delivered to JLM Environmental at our field office located at 15200 Grevillea Avenue, Suite B, Lawndale, CA 90260. Walk-ins are welcome between 9 AM and 5 PM, Monday through Friday. To ensure sample integrity and analytical quality, clients are advised to follow the guidelines below when submitting samples. Please feel free to call us at (310) 978-8281 for additional information.

  1. Please note, samples may only be dropped off with prior authorization before or after business hours; please contact us at (310) 978-8281 or email to schedule a drop-off.
  2. All samples must be accompanied by proper documentation. Please download the appropriate JLM Environmental Chain of Custody form by clicking one of the links below. If you are unable to download the form, please contact our office for assistance.
    JLM Environmental Chain of Custody Forms:
    Asbestos Bulk
    Asbestos Air
  3. All samples shall be no larger than 1"x1" or the size of a U.S. Silver Dollar coin.
  4. All samples must be clearly labeled and identifiable with the information provided on the Chain of Custody form. Please specify sample type, sample location, analysis requested and preference for reporting.
  5. Customers can choose Same Business Day (if submitted before 11 AM), Next Business Day and Two Business Days turnaround times for the analysis of their samples. Please inform our office staff when calling for drop-off authorization of the quantity of samples so we can ensure that we can meet your needs.
  6. Samples should be individually sealed and properly separated to avoid mixing or cross-contamination of samples.
  7. Samples should be adequately packaged to avoid physical damage to the contents.
  8. Payment is DUE at time of analysis. In order to avoid any unnecessary delays, please include check with samples at time of submittal. Please make all checks out to JLM Environmental and hand deliver to our field office located at 15200 Grevillea Avenue, Lawndale, CA 90260. JLM Environmental also accepts Visa and Master Cards as form of payment; please note, a 3% credit card processing fee will be charged for credit card payments. Please include this information on the chain of custody form or you can call and process credit card information over the phone.
  9. Note: In the event JLM Environmental representatives are out of the office during normal business hours, or after hours and on weekends, samples or packages can be placed into sample drop box at exterior south front door (below the JLM Environmental sign). Please ensure that samples are placed in the appropriate slot labeled, "JLM Environmental After Hours Sample Drop Box"
  10. All samples will be analyzed within 1-2 business days depending on the turnaround time requested; if no turnaround time is selected on the Chain of Custody, JLM Environmental will proceed to analyze the sample(s) at a Two Business Day turnaround.
  11. Clients are encouraged to contact JLM Environmental to discuss any special issues regarding sampling or sample submission procedures.

If you think your home or property may contain asbestos, call us today to receive professional and reliable instructions on what you can do to keep you, your family and anyone who works on your home safe. Consultants are available to speak with on the most appropriate test methods to use for your samples, or what samples may be appropriate for a given investigation. Inappropriate test methods or samples cost more money and give results that may be difficult to interpret or defend and subsequently a waste of resources.

Meet Our Laboratory Manager:

Steve Vaughn - Laboratory Manager

  • Asbestos Identification & Analysis by PLM (Certificate #67387)
  • Air Sampling & Analysis of Airborne Asbestos, NIOSH 582 Equivalent (Certificate #80080)
  • Lead Sampling Technician (CDPH Certificate #27797)
  • Radon Measurement Specialist (NRSB Certificate #15SS050)
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