Isn’t the TCE plume emanating from the former ETMCAS changing its shape?
Yes. The objective of the TCE plume clean-up program is to reduce the size and concentration of the plume. Because of the groundwater tends to move “down-gradient” (toward lower pressures), the size, shape, depth and location of a plume will change over time. Since the clean-up of the TCE plume at the former ETMCAS began, moderate changes in the shape and location of the plume were expected and have been observed. The shape and location of the TCE plume is based on data obtained from wells monitored by OCWD and the Navy. Water samples from these wells are tested on a quarterly basis and, from these tests, the lateral and vertical dimensions of the plume are calculated using proven scientific methods. The dimensions of the plume are included in updated maps of the TCE plume which are available for public viewing in groundwater monitoring reports at the Heritage Park Library. The most current map shows the leading edge of the plume (where TCE has been detected) is located approximately t
Related Questions
- Hasn’t there been an on-going effort to communicate information about the ETMCAS TCE plume to homeowners and the public in the Woodbridge area and throughout IRWD’s service area?
- Is there a risk of TCE vapors rising out of the TCE plume from the former ETMCAS base and contaminating homes and businesses over the plume?
- Isn’t the TCE plume emanating from the former ETMCAS changing its shape?
