ASSAYMolecule by molecule.
Every analyte. Every matrix.
Assay returns certified environmental reports that tell you exactly what's present and at what concentration — air, water, soil, bulk materials, or workplace air. Field collection to signed report in as little as 24 hours.
Air Quality Testing
Indoor air quality surveys, stack emission testing, ambient air monitoring, and OSHA workplace exposure assessments. We deploy integrated sampling trains, sorbent tubes, and impingers — returning certified results against EPA Methods 18, 25A, and NIOSH criteria.
Sample Requirements
Turnaround Tiers
Detection Limits & Methods
| Analyte / Parameter | Method | MDL | Unit | Matrix |
|---|---|---|---|---|
| Total VOCs (TVOC) | EPA TO-15 | 0.5 | µg/m³ | Indoor Air |
| Benzene | EPA TO-15 | 0.1 | µg/m³ | Ambient |
| Formaldehyde | NIOSH 2016 | 0.02 | ppm | Workplace |
| Respirable Silica | NIOSH 7500 | 0.01 | mg/m³ | Workplace |
| Asbestos Fibers | NIOSH 7400 | 0.01 | f/cc | Workplace |
| Carbon Monoxide | EPA 10 | 0.5 | ppm | Stack |
| Nitrogen Dioxide | EPA 7E | 1.0 | ppm | Stack |
| PM2.5 / PM10 | EPA FRM | 0.5 | µg/m³ | Ambient |
MDL = Method Detection Limit. All values represent routine laboratory conditions. Lower MDLs available upon request. Consult project manager for site-specific QC requirements.
Water Chemistry
Drinking water compliance, groundwater characterization, stormwater discharge monitoring, and PFAS screening. Our aqueous lab runs EPA-certified methods under the Safe Drinking Water Act, NPDES, and RCRA programs. Chain-of-custody from field to bench.
Sample Requirements
Turnaround Tiers
Detection Limits & Methods
| Analyte / Parameter | Method | MDL | Unit | Matrix |
|---|---|---|---|---|
| PFOA / PFOS | EPA 537.1 | 0.4 | ng/L | Drinking Water |
| Total PFAS (40-compound) | EPA 533 | 0.5 | ng/L | Groundwater |
| VOCs (65-compound) | EPA 524.2 | 0.5 | µg/L | Aqueous |
| Arsenic | EPA 200.8 | 1.0 | µg/L | Drinking Water |
| Lead | EPA 200.8 | 1.0 | µg/L | Drinking Water |
| Nitrate (as N) | SM 4500-NO3 | 0.05 | mg/L | Aqueous |
| Total Coliform | SM 9223B | Presence/Absence | — | Potable |
| Hexavalent Chromium | EPA 218.6 | 0.5 | µg/L | Groundwater |
MDL = Method Detection Limit. All values represent routine laboratory conditions. Lower MDLs available upon request. Consult project manager for site-specific QC requirements.
Soil & Sediment
Phase II ESA soil sampling, brownfield characterization, RCRA Subtitle C waste classification, and sediment toxicity testing. We process split-spoon, grab, and composite samples under ASTM D7458 QA protocols with full triplicate QC.
Sample Requirements
Turnaround Tiers
Detection Limits & Methods
| Analyte / Parameter | Method | MDL | Unit | Matrix |
|---|---|---|---|---|
| SVOCs (PAHs, 8270) | EPA 8270D | 0.033 | mg/kg | Soil |
| PCBs (Aroclors) | EPA 8082A | 0.01 | mg/kg | Soil/Sediment |
| RCRA Metals (8) | EPA 6010C | 1.0 | mg/kg | Soil |
| Total Petroleum Hydrocarbons | EPA 8015B | 1.0 | mg/kg | Soil |
| Pesticides (Chlorinated) | EPA 8081A | 0.002 | mg/kg | Soil |
| Dioxins / Furans (TEQ) | EPA 8290A | 0.1 | pg/g | Soil |
| Total Organic Carbon | EPA 9060A | 0.1 | % | Sediment |
| Grain Size Distribution | ASTM D422 | N/A | % fines | Sediment |
MDL = Method Detection Limit. All values represent routine laboratory conditions. Lower MDLs available upon request. Consult project manager for site-specific QC requirements.
Asbestos & Lead
Pre-demolition asbestos surveys, clearance air testing, lead-based paint XRF screening, TCLP leachate classification, and wipe sampling for renovation compliance. Our PLM and TEM capabilities cover both bulk and airborne fiber analysis.
Sample Requirements
Turnaround Tiers
Detection Limits & Methods
| Analyte / Parameter | Method | MDL | Unit | Matrix |
|---|---|---|---|---|
| Asbestos (Bulk PLM) | EPA PLM | 1% | % by area | Bulk Material |
| Asbestos (TEM Clearance) | AHERA TEM | 70 | s/mm² | Air |
| Asbestos (PCM Air) | NIOSH 7400 | 0.01 | f/cc | Air |
| Lead (Wipe, ICP) | EPA 7420 | 1.0 | µg/ft² | Wipe |
| Lead (Paint Chip) | EPA 3050B | 10 | mg/kg | Solid |
| Lead (XRF Screening) | HUD XRF | 0.5 | mg/cm² | Paint |
| TCLP Lead | EPA 1311 | 0.1 | mg/L | Leachate |
| Chromium (Wipe) | EPA 6020A | 1.0 | µg/ft² | Wipe |
MDL = Method Detection Limit. All values represent routine laboratory conditions. Lower MDLs available upon request. Consult project manager for site-specific QC requirements.
Industrial Hygiene
Personal exposure monitoring, area air sampling, biological monitoring, and noise dosimetry for OSHA compliance programs. We design sampling strategies for chemical, physical, and biological hazards — delivering results against current PELs, TLVs, and Action Levels.
Sample Requirements
Turnaround Tiers
Detection Limits & Methods
| Analyte / Parameter | Method | MDL | Unit | Matrix |
|---|---|---|---|---|
| Total Hydrocarbons (PID) | NIOSH 1500 | 0.5 | ppm | Personal Air |
| Hexane | NIOSH 1500 | 0.1 | ppm | Personal Air |
| Isocyanates (TDI/MDI) | OSHA 42 | 0.001 | ppm | Personal Air |
| Mold Spores (Culturable) | ASTM D7658 | 1 | CFU/m³ | Indoor Air |
| Respirable Dust | NIOSH 0600 | 0.01 | mg/m³ | Personal Air |
| Heavy Metals (Personal) | NIOSH 7300 | 0.1 | µg/m³ | Personal Air |
| Noise Dosimetry | OSHA 1910.95 | 80 | dBA TWA | Workplace |
| Biological Monitoring (BEI) | ACGIH BEI | Matrix-specific | — | Urine/Blood |
MDL = Method Detection Limit. All values represent routine laboratory conditions. Lower MDLs available upon request. Consult project manager for site-specific QC requirements.
Request a Quote
Tell us your sample matrix, target analytes, and timeline. We'll return a fixed-price quote within 2 business hours.
Full Test Menu
Download our complete 48-page capabilities binder. Every method, every matrix, every MDL. Updated quarterly.