Use of Environmental Forensics In Drycleaning Investigations

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Surrogate ApproachPCE from SewersSurfactants (a) amine alkylarenesulfonates(b) Sodium alkylarenesulfonates, (c) petroleumSulfonates, (d) ethoxylated phenols and (e)ethoxylated phosphate esters. Use MBAS for presence/absence as an inexpensive surrogate for detergents.Generic Indicators (a) high TDS values, (b)presence of trihalomethanes, (c) microbiological,(d) soil gas (methane, etc).
Co-mingled PCE-SeparateSources• PCE from two sources chemically identical• May be isotopically different• Carbon and Chlorine stable isotope ratios• 13 C/ 12 C and 37 Cl/ 35 Cl• May differentiate sources prior to comingling• Effects of biodegradation need to beconsideredClClCCClCL
Page 1 and 2: Use of Environmental ForensicsIn Dr
Page 3 and 4: Presentation OutlinePCEWhere to sam
Page 5: Synonyms for PCEChemical namesCarbo
Page 8: PCE Applications (b)• Rubber diss
Page 11 and 12: PCE Enriched via Solvent Distillati
Page 13: Feedstock used for PCE Productionfo
Page 16 and 17: The presence of 1,1,2,2-TeCA and/or
Page 18 and 19: EPA Method 8270 - Substituted Pheno
Page 20 and 21: Where to Sample?Knowledge of Drycle
Page 22 and 23: Traditional v. Forensic SamplingTra
Page 24 and 25: Sources of Muck
Page 26 and 27: Surrogate Chemical Signature Associ
Page 28: Muck from Expansion Joint Material(
Page 31 and 32: Case StudyExpansion Joint SamplingE
Page 33 and 34: Sewer Videos - Sewer Sampling
Page 35 and 36: Analytical DecisionsUnderstand the
Page 37 and 38: PCE StabilizersAcid InhibitorsAcety
Page 39 and 40: TCE StabilizersMetal stabilizers us
Page 41 and 42: Manufacturers of PCE for Dry Cleani
Page 43 and 44: Distinguishing Drycleaner fromTrans
Page 45: Metal Cleaning v. Dry Cleaning (b)D
Page 49 and 50: Isotopic Analysis for Source Discri
Page 51 and 52: Degradation Rate Approach
Page 53: THANK YOU

Use of Environmental Forensics In Drycleaning Investigations

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