Implementation of Cleanup Activities. 1. The CAR shall ensure the adequacy of each cleanup in protecting human health and the environment as it is implemented.
Implementation of Cleanup Activities. It is anticipated that the soil removed from the designated excavation areas will be directly loaded and transported offsite for disposal. Composite waste characterization samples will be collected prior to initiating the excavation to expedite the remedial process. Non-hazardous soil will be transported to a Subtitle D landfill. The backfill will be sampled at the source prior to initiating excavation to document no environmental impacts have been added to the site. The clean fill will be added to the excavation areas and compacted to a condition similar to that encountered prior to excavation. Excavation, Disposal, and Backfill (Removal) of Soil: This cleanup alternative includes the excavation, stockpiling, off-site disposal of impacted soils, and backfilling with clean soils. Additional sampling may be required to confirm that the lateral and vertical depths of impacted soil has been determined. This alternative is an effective way to eliminate risk at the site since contamination and the exposure pathways would be removed. This alternative would comply with the Xxxxxxx Xxxxxxxxxx Act and would reduce future risk and expenditure during redevelopment of the property. Additionally, this alternative would remove the source material contributing to the groundwater impact at the site. Further, source soil removal combined with delineation of groundwater impacts would facilitate regulatory closure through both the Xxxxxxx Xxxxxxxxxx and Response and Remediation Hazardous Site Inventory programs. Removal of contaminated materials from the site is typically the most effective type of remediation, regardless of contaminant type. Many factors affect the implementability of an excavation project. Generally, excavation is limited to materials that are unconsolidated and can be removed using backhoes, excavators, and similar equipment. Source removal of the impacted soils is proposed by excavating vertically and horizontally based on delineation sampling. Access must be available to bench, remove, and stockpile the impacted soils. Once removed, the impacted soils will be properly disposed, and the excavation will be backfilled with clean soil. Given the limited areas and depths of impact, undeveloped nature of the site, and accessibility, soil removal would be readily implementable. The primary cleanup objective is the protection of human health and the environment. This objective will be completed by removing the impacted soils located throughout the site. The sit...
