Environmental Testing

Our NELAP-accredited environmental laboratory offers reliable sample analysis of air, soil, water, wastewater, hazardous waste, and other matrices for determining organic, inorganic, and industrial chemicals.


We provide analytical support for programs such as:

  • Resource Conservation and Recovery Act (RCRA)
  • Clean Water Act (CWA)
  • Safe Drinking Water Program (SDWP)
  • Underground Storage Tank Program (USTP)

To learn more about these programs, visit the EPA website.

Volatile Organic Compounds (VOCs)

Volatile organic compounds (VOCs) are organic compounds that vaporize at normal temperature and pressure. VOCs are released into the air by everyday products and during common manufacturing processes. Common household sources include: paints; paint strippers; aerosol sprays; wood preservatives; cleaning products; and disinfectants.

Analytical methods for liquids and solids use methanol preparations and purge and trap GC-PID/FID or GC/MS systems. Air samples use alternative cryogenic sample introduction to GC/MS systems.

LEGEND uses EPA methods 624, 8260B, and TO-15 for VOC analysis.

Semi-Volatile Organic Compounds (SVOCs)

Semi-volatile organic compounds (SVOCs) are organic compounds frequently found in liquids, soil, and other materials. Common types of SVOCs include: polynuclear aromatic hydrocarbons (PAHs); chlorinated hydrocarbons; pesticides; phthalate esters; aldehydes; ethers; ketones; phenols; and nitrophenols.

Analytical methods generally use dichloromethane (methylene chloride) preparations and GC/MS systems.

LEGEND uses EPA methods 625 and 8270D for SVOC analysis.

Non-Volatile Organic Compounds

Common non-volatile organic compounds include: acrylamide; nonyl phenol ethoxylates (NPEs); per- and polyfluoroalkyl substances (PFAS); and polydiallyldimethylammonium chloride (polyDADMAC or polyDDA). Non-volatile organic contaminants were used for many industrial applications, such as: non-stick surface coatings for cookware (PFAS); fire-fighting foam (PFAS); fracking (acrylamide/polyDADMAC); and surfactants (NPEs).

Preparation methods for liquids and solids use solid-phase extraction (SPE) and dispersive solid-phase extraction (dSPE) with direct injection. Analytical methods use UPLC-TOF (Time of Flight MS) and UPLC-TQD, allowing for detection levels ranging from low ppm to high ppt.

Residual Nonylphenol Ethoxylate

Nonylphenol Ethoxylate (NPE) and Alcohol Ethoxylate (AOE) surfactants are determined in milk and other matrices by Liquid Chromatography High Resolution Mass Spectrometry (LC-HRMS) to part per million (ppm) levels.

1,4-Dioxane Analysis

1,4-Dioxane is a synthetic chemical used as a stabilizer for chlorinated solvents. The chemical moves through water easily and does not readily biodegrade. As a result, it has been detected in groundwater throughout the United States.

The analytical method uses solid-phase extraction via GC-HRMS.

LEGEND uses a modified EPA method 522 for 1,4-Dioxane analysis; our current limit of detection is 0.10 µg/L.


Pesticides are substances used to control pests. Common pesticides include: herbicides (plants); insecticides (insects); fungicides (molds/mildews); and disinfectants (bacteria/viruses).

Preparation methods for liquids and solids use solid-phase extraction (SPE), automated solvent extraction (ASE), and liquid-liquid extraction. Analytical methods use GC-ECD, GC/MS, UPLC-TOF (Time of Flight MS), and UPLC-TQD.


Anions by Ion Chromatography (IC) for F, Cl, NO2, NO3, Br, PO4 and SO4 in both drinking water and wastewater/soil.

Halogens are determined by Ion Chromatography (IC) (F, Cl, Br, and I) in oils/solids with Parr bomb preparations.

LEGEND uses EPA method 300 for drinking water and EPA method 9056A for wastewater/soil.

Wet Chemistry Analyses

Common tests performed in our wet chemistry laboratory include:

  • (pH) (acidity, alkalinity)
  • Conductivity
  • Hardness
  • Solids or dissolved solids

Metals determination in Drinking Water per Safe Drinking Water Act (SDWA)

LEGEND is an accredited laboratory approved for analysis of heavy metals and inorganic compounds including chloride, fluoride, nitrate, Orthophosphate as P and sulfate in drinking water.

LEGEND uses EPA method 300.0 for these analyses.

Metals determination of Acid Mine Drainage

Analysis of mine tailings for heavy metals such as arsenic, copper, lead, and mercury.

Metals determination of Resource Conservation and Recovery Act (8)

The eight Resource Conservation and Recovery Act (RCRA) metals are arsenic, barium, cadmium, chromium, lead, mercury, selenium, silver.

Metals preparation and digestion may include TCLP, TCLP/ZHE, or filtration.

LEGEND uses EPA methods 6010D and 6010A for soil and aqueous samples.

Metals determination of Priority Pollutants (13)

The 13 Priority Pollutant (PP) metals are antimony, arsenic, beryllium, cadmium, chromium, copper, lead, mercury, nickel, selenium, silver, thallium, zinc.

LEGEND uses EPA methods 6010D and 6010A for soil and aqueous samples.

Metals determination of Target Analytes List (23)

The 23 Target Analytes List (TAL) metals are silver, aluminum, arsenic, barium, beryllium, calcium, cadmium, cobalt, chromium, copper, iron, mercury, potassium, magnesium, manganese, sodium, nickel, lead, antimony, selenium, thallium, vanadium, zinc.

LEGEND uses EPA methods 6010D for soil and aqueous samples.


LEGEND has built its reputation by providing high quality, reliable data combined with responsive customer service. Our staff of consulting chemists and analysts provides client services from initial sampling methodologies to in-depth data interpretation. Whether your analytical needs require routine analyses or complex method development, our analytical staff is ready to assist you.

The St. Paul, MN location is open 8:00 a.m. to 5:00 p.m. CST, Monday through Friday. This location may close during major holidays.

Sample receipt and analyses outside these hours can be arranged with prior notice.

We offer discounted pricing to clients who have the need for long-term analytical services or who have projects with substantial sample volume.  For a specific price quotation, please contact our Sales Department at (651) 221-4064, or your assigned Project Manager.

Our payment terms are net 30 days.  VISA and Mastercard are accepted.

All sample containers, preservatives, coolers, custody seals, and chain-of-custody (standard or pre-printed) forms will be provided when a bottle order is approved by the assigned Project Manager.

These items can be ordered through your assigned Project Manager.  Twenty-four hour advanced notice is requested.

Current standard turnaround time (TAT) is 7 working days for most analyses based on laboratory sample load.

Rush TATs are applicable to routine analyses only. Rush TAT availability is dependent on laboratory capacity. Please contact your assigned Project Manager for laboratory approval. Rush surcharges are dependent on the TAT that is provided:

Business Days
1 Day = 3.0 X List Price
2 Day = 2.0 X List Price
3 Day = 1.75 X List Price
4 Day = 1.5 X List Price
5 Day = 1.25 X List Price
7-10 Days = Standard Turnaround Time

Analytical reports and electronic data deliverables (EDDs) may be accessed online (ClientConnect) through our secure data access portal.  Reports and quality control data can be provided in various formats, including Microsoft Excel, Adobe Acrobat PDF, and Microsoft Access. Customized EDDs can be provided for a fee, depending on the specifications.

Sample receiving is open Monday through Friday, 8 a.m. to 5 p.m., and closed on Saturday and Sunday. Packages delivered on Saturday or Sunday will be received the following business day.

Shipping Address
Legend Technical Services, Inc.
Attn: Sample Receiving
88 Empire Drive
St. Paul, MN 55103

Have more questions?

Whether you have questions about our services, need assistance, or have regulatory concerns, we can help.
Contact any of our locations.