Georgia Pacific (formerly Grow Group) Corrective Action Completion

Georgia Pacific (formerly Grow Group) Corrective Action Completion

DTSC has reviewed the RCRA facility investigation reports. Twenty-eight of the twenty nine SWMUs were found to be either non-detect or below regional background levels. Therefore, these units contain no contamination requiring action. The final unit (SWMU #3) contained minor residual levels of Total Petroleum Hydrocarbons, Volatile Organic Compounds, and Polychlorinated Biphenyls. Metals detected included tin and hexavalent chromium. A risk evaluation concurred with by DTSC's toxicologist found that these levels in soil and soil gas were below health based unrestricted use levels. The groundwater pathway was found to be incomplete and not a source of risk. Detected compounds were all at shallow depths of less than 10 feet. These detections were sporadic and at low concentrations. Groundwater at the site is documented at approximately 100 feet below ground surface (bgs), which provides adequate separation to preclude contamination with the current site conditions. These cumulative lines of evidence strongly indicate that groundwater was not, and will not be impacted. This project is a corrective action completion. This means that the facility has conducted investigations on and around all of the identified SWMUs. DTSC concurs with the investigation findings that no significant residual contamination is present at this facility. Therefore, no further investigation or corrective action is required at the facility.

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