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[SWMU B-33 ]

SWMU B-33 Work Plan

RL17 Project, February 1996

Soils: Krum Complex and Brackett-Tarrant Association

Known: Sand and projectiles from the Building 90 test firing room were used as pipe bedding at solid waste management unit B-33 (ES, 1993b). Only the pipe and bedding constitute the unit.

Previous Investigations: SWMU located during field activities.

Data Needs: Map, geophysical survey, and analytical data of surface soils.

Closure Activities: The field team should be observant for UXO. The following field activities will be performed to gather data for TNRCC closure submittal of SWMU B-33.

SWMU B-33 Field Effort 1

  1. Review historical records as described in Section 2.4.1 of the Work Plan Overview.

  2. Field map the SWMU as described in Section 2.4.1 of the Work Plan Overview.

  3. Conduct a geophysical survey of the SWMU as described in Section 2.4.1 of the Work Plan Overview.

  4. Identify the location of the pipe. Sample and analyze surface soils from three locations in the pipe bedding near the middle section and halfway towards each end of the pipe as described in Section 2.4.1 of the Work Plan Overview. Analyze each sample for explosives and metals (as outlined in the FSP).

SWMU B-33 Field Effort 2

  1. Three soil borings will be drilled to characterize the subsurface soils.

  1. Locate, receive approval, and drill three borings to monitor potential leachate from the pipe bedding as described in Section 2.4.1 of the Work Plan Overview.

  2. Obtain two samples per boring near the middle and total depths as described in Section 2.4.1 of the Work Plan Overview.

  3. Analyze each subsurface sample for explosives and metals identified in the surface soils (as outlined in the FSP).

  1. Water is not expected to be encountered at the site. However, if water is discovered in any of the soil borings, all three borings will be sampled and potentially completed as groundwater monitor wells as detailed in Section 2.4.1 of the Work Plan Overview. Sample groundwater, where present, and analyze each sample for explosives and metals identified in the surface (as outlined in the FSP).

  2. Handle the IDW in accordance with the FSP.