AQR ® Color-Tec Field-Based Analysis of Chlorinated Volatil Organic Halocarbons http: //www. aqrcolortec. com
® What is AQR Color-Tec? u u u u Field test kit for chlorinated solvents Detects total chlorinated halocarbons (CVOHs) in soil and water samples to less than 3 µg/L or µg/kg Provides qualitative data and estimated concentrations Results in 3 minutes per sample Over 20, 000 samples analyzed Initially developed in 1997 Tested and verified at EPA, DOD, DOE and state chlorinated solvent site investigations Commercial production began 2007
® AQR Color-Tec Method Detection Limits ® AQR Color-Tec detects all CVOHs to less than 3µg/L Statistical Comparison of Split-Sample CG/MS Results to AQR Color-Tec® Zero Values Only (non-detections) (typical chlorinated solvent site data set N = 42) Parameter Mean Range Standard Deviation 95% UCL of the mean 90 th Percentile Value 95 th Percentile Value Concentration (µg/L) 0. 362 0 to 2. 55 0. 736 0. 857 1. 626 2. 370
® AQR Color-Tec Comparison to GC/MS data AQR Color-Tec® results consistently indicate a relative correlation to split sample laboratory GC/MS (EPA 8260 B) comparison data. This graph shows the relative correlation by plotting AQR Color-Tec readings with the split sample GC/MS concentrations of total CVOHs detected in 61 groundwater samples from a chlorinated solvent site.
® AQR Color-Tec Open-Loop Stripping Analysis Procedure Ambient air enters through carbon filter Tygon Tubing Carbon Filter Colorimetric Tube Hand-Operated Vacuum Pump (100 cc) Air Flow Purge Needle (long) Headspace (~30%) Water Sample Pre-filtered ambient air is purged through the sample, stripping the volatile compounds into the headspace Air Bubbles Pump Stand 40 ml VOA Vial Pump Handle
® AQR Color-Tec Open-Loop Stripping Analysis Procedure Ambient air enters through carbon filter Tygon Tubing Carbon Filter Colorimetric Tube Hand-Operated Vacuum Pump (100 cc) Air Flow Purge Needle (long) Headspace (~30%) Water Sample Purged volatile compounds pass through the headspace, needle, and tubing into the colorimetric tube where they react and cause a distinct color change Air Bubbles Pump Stand 40 ml VOA Vial Pump Handle
® AQR Color-Tec Sampling Media Samples. Analyze liquid or solid samples. Analysis and tubes are heated before Headspace Added Water (de-ionized) Water Sample Soil Sample Water Set-up Soil Set-up
® AQR Color-Tec Conversion Table u Converts AQR Color-Tec® tube readings to µg/L or µg/kg u Based on comparison of Color-Tec data to GC/MS data using over 5000 water samples collected from 152 chlorinated solvent sites. u A “Median” estimated value for each Color-Tec reading was obtained using statistical comparison of Color -Tec data and GC/MS (EPA Method 8260 B) data. u The “Range” value reflects the potential deviation from the Median value based on the Color-Tec and EPA Method 8260 B comparison results.
® AQR Color-Tec Increases Sampling Coverage Laboratory Sampling Only ® AQR Color-Tec with Laboratory sampling The low per-sample cost of AQR Color-Tec® allows for more samples, resulting in increased coverage and reduced uncertainty. 24 Samples @ $100 each The AQR Color-Tec® data is used to focus definitive analysis sampling onto 48 Color-Tec Samples @ $25 each critical areas. Definitive analysis provides high analytical accuracy, but sampling quantity is often limited to control costs, resulting in data gaps, sampling uncertainty, and low overall data quality Total Cost = $2, 400 Combining AQR Color-Tec® with laboratory sampling increases overall data quality at a lower cost by providing improved sampling coverage with high analytical accuracy. 6 Laboratory Samples @ $100 each Total Cost = $1, 800
® AQR Color-Tec Comprehensive Instructions u Detailed Procedures Manual l l l l Kit Set-up Method principles Sample Collection Reading the tubes QA/QC procedures Trouble shooting guide Conversion Table References Method Applications
EPA Guidance Featuring ® AQR Color-Tec u Using Dynamic Field Activities for On-Site Decision Making May 2003; OSWER No. 9200. 1 -40 EPA/540/R 03/002; Chapter 5, http: //www. epa. gov/superfund/programs/dfa/download/guidance/40 r 03002. pdf u Site Characterization Technologies for DNAPL Investigations September 2004; EPA 542 -R-04 -017; in. org/download/char/542 r 04017. pdf u http: //www. clu- Understanding Procurement for Sampling and Analytical Services under a Triad Approach June 2005, EPA 542 -R-05 -022 http: //www. epa. gov/swertio 1/download/char/procurement. pdf u Conducting Contamination Assessments at Drycleaning Sites EPA Technology Innovation Program; State Coalition for Remediation of Drycleaners http: //www. drycleancoalition. org/download/assessment. pdf
State Guidance Featuring ® AQR Color-Tec u D H E C Colorado Department of Public Health and Environment Drycleaner Remediation Guidance Document 2004 http: //www. cdphe. state. co. us/HM/drycleanerguidance. pdf u South Carolina Department of Health and Environmental Control; Field Inspection Guidance http: //www. schouse. org/reports/dhec/scdcrtfprogramstatusreport 2007. doc u North Carolina Dry-Cleaning Solvent Cleanup Program Guidance for Conducting Drycleaner Facility Prioritization Assessments http: //wastenot. enr. state. nc. us/SFHOME/Dry. Clean/Download/PAR%20 guidance. doc
EPA Triad Implementations ® Case Studies Using AQR Color-Tec u Using AQR Color-Tec for Source Identification and Delineation Naval Construction Battalion Center Davisville North Kingstown, RI - 2008 Triad Conference http: //www. umass. edu/tei/conferences/Triad_PDF/Anderson. pdf u Fast Track to Reducing Conceptual Site Model Uncertainty CH 2 MHill; Storage Tank Site ST-123 POL Fuel Yard http: //www. Triadcentral. org/user/includes/dsp_profile. cfm? Project_ID=25 u Best Practices in Triad Approach to Characterize TCE National Laboratory Environmental Sciences Division Argonne, IL http: //www. triadcentral. org/user/doc/TPP-Hurlburt-Best. Practices. pdf u Adaptations to Triad as a Basis for Exit Strategy Development Decision Logic Flow Chart 2006 Triad Poster Session; CH 2 MHill http: //www. triadcentral. org/user/doc/TPP-Hurlburt-Triad. Adaptations. pdf u Successful Triad Implementations at Federal Sites AQR Color-Tec Method locates source areas at Calloway Drum Recycling Site, Auburndale, Florida http: //www. triadcentral. org/user/doc/TPP-Callaway-Field_Based_Decision_Approach. pdf
® AQR Color-Tec Featured On EPA CLU-IN Technology Page EPA CLU-IN web page provides information about treatment and characterization technologies. AQR Color-Tec is featured with other test kits in the technology descriptions and selection tools section
® AQR Color-Tec Equipment and Expendables u u u Cost per sample is $19. 95 (Basic QA/QC included) Provided in 20 -sample kits with all required expendables Hardware kit includes piston pump, pump stand, heating equipment, and carrying case Professional technical support is included with any purchase Customized comprehensive training courses are available Hardware Kit = $1, 195 20 Sample Pack = $395
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