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Original Articles

Residual Methamphetamine in Decontaminated Clandestine Drug Laboratories

, &
Pages 151-156 | Published online: 23 Jan 2009
 

Abstract

This pilot cross-sectional study examined three previously decontaminated residential clandestine drug laboratories (CDLs) in Washington State to determine the distribution and magnitude of residual methamphetamine concentrations relative to the state decontamination standard. A total of 159 discrete random methamphetamine wipe samples were collected from the three CDLs, focusing on the master bedroom, bathroom, living room, and kitchen at each site. Additional samples were collected from specific non-random locations likely to be contacted by future residents (e.g., door knobs and light switches). Samples were analyzed for methamphetamine by EPA method 8270 for semivolatile organic chemicals. Overall, 59% of random samples and 75% of contact point samples contained methamphetamine in excess of the state decontamination standard (0.1 μ g/100 cm 2 ). At each site, methamphetamine concentrations were generally higher and more variable in rooms where methamphetamine was prepared and used. Even compared with the less stringent standard adopted in Colorado (0.5 μ g/100cm 2 ), a substantial number of samples at each site still demonstrated excessive residual methamphetamine (random samples, 25%; contact samples, 44%). Independent oversight of CDL decontamination in residential structures is warranted to protect public health. Further research on the efficacy of CDL decontamination procedures and subsequent verification of methods is needed.

Acknowledgments

The contents of this manuscript are solely the responsibility of the authors and do not necessarily represent the official views or policies of the Washington State Department of Health or the University of Washington.

Notes

A Based on health department and/or law enforcement assessment.

B Anhydrous ammonia methamphetamine manufacturing method.

C Based on health department assessment.

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