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Publication Summary

Title

Lakewood Plaza Cleaners, February and August 2002 Groundwater Monitoring Sampling Results

Month-Year PublishedFebruary 2003
Online Availability
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Short Description

This document summarizes the findings of samples collected at Lakewood/Plaza Cleaners on February 6 and August 29, 2002. Ecology has conducted groundwater monitoring at this site since 1991 to evaluate the effectiveness of Lakewood water supply wells H1/H2 to contain and remove groundwater contaminated by Plaza Cleaners.

(Also see abstract below)
Publication Number03-03-007
Author(s)Marti, P.
Print Availability
Request from the program.
Number of pages 14 pp. + app (20 total)
Keywords groundwater, model, Model Toxic Control Act, monitoring, results, sampling, toxic, water, wells
Subject Waterbodies
Clover Creek
map of Washington state showing locations of subject waterbodies
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Abstract Long Description

This progress report is one in a series describing results of long-term groundwater sampling at Lakewood Plaza Cleaners in south Tacoma. Results of volatile organics of samples collected from two municipal wells and four monitoring wells in February and August 2002 are included.

  • Monitoring wells MW-20B and MW-16A, as well as municipal wells H1 and H2, continue to have tetrachloroethene (PERC) concentrations exceeding the Model Toxic Control Act (MTCA) cleanup standard of 5.0 ug/L. PERC concentrations in these wells during the past year of sampling were MW-20B (248 and 371 ug/L), MW-16A (22 and 47 ug/L), and H1 and H2 (6.1 and 12 ug/L).

  • Trichloroethene (TCE) was detected in MW-20B in August at a concentration of 8.5 ug/L, which exceeds the MTCA cleanup standard for TCE of 5.0 ug/L. TCE was not detected in MW-20B in February due to a high quantitation limit (200 ug/L).

  • Cis-1,2-dichloroethene (cis-1,2-DCE) was detected in wells MW-20B (16 ug/L) and MW-16A (0.8 and 2.3 ug/L).

  • Well MW-20A, which is part of the long-term monitoring network, was not sampled during either round due to failure of the dedicated pump. The pump will be repaired before the next round of sampling in January 2003.

    Overall, concentrations are similar to those reported in previous sampling rounds.

    Link to EIM data for User Study ID LAKEWOOD


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