Publication Summary

This document is one in a series describing the results of groundwater and surface water monitoring at the American Crossarm and Conduit (ACC) site. Samples were collected on June 22, 1999 from two of the four downgradient monitoring wells and two on-site surface water stations. All samples were analyzed for polynuclear aromatic hydrocarbons (PAHs) and chlorinated phenolics.

This document is one in a series describing the results of groundwater and surface water monitoring at the American Crossarm and Conduit (ACC) site. Samples were collected on June 22, 1999 from two of the four downgradient monitoring wells (MW-24 and MW-25) and two on-site surface water stations (ACCSW1 and ACCSW2).

Monitoring wells MW-22 and MW-23, which were part of the original monitoring network, are no longer sampled because they have been damaged. In 1998, well MW-23 was decommissioned. The well casing of MW-22 is bending under the weight of the protective casing and concrete pad due to the uneven subsidence of the surrounding ground. Since the well casing may be cracked, samples collected from this well are no longer considered reliable.

All samples collected for this project were analyzed for polynuclear aromatic hydrocarbons (PAHs) and chlorinated phenolics.

In June, acenaphthene was detected in well MW-25 at an estimated concentration of 0.00014 mg/L. This is the only PAH detected in either of the sampled wells. Acenaphthene is not classified as a carcinogen and therefore does not exceed any of the cleanup standards that are applicable to this project. Chlorinated phenolics were not detected in either of the wells during this round of sampling.

Most of the PAHs analyzed for were detected at both surface water stations. All detected analytes in the surface water samples were far below established water quality criteria for fresh water (EPA, 1992).

Link to EIM data for User Study ID CROSSARM