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>American Recovery and Reinvestment Act > CHPRC-0900540.6 Attachment 1 Photo 9 SGRP 100-NR-2 drilling prep.JPG

Gallery: American Recovery and Reinvestment Act
Title: Drilling Treatment Wells at 100N
Drilling Treatment Wells at 100N
Name: Drilling Treatment Wells at 100N
Document Date: 10/16/2009
Keywords: recovery, drilling, wells, groundwater, treatment, 100-NR-2, apatite, barrier, strontium-90
Area: 100N
Description:
Using Recovery Act funding, contractors are drilling more than 250 wells to support groundwater treatment and monitoring systems. In this photo, workers begin drilling operations at the 100-NR-2 Operable Unit, where 171 new wells will be drilled to expand an apatite barrier in the soil to prevent radioactive strontium-90 from moving torward the Columbia River. The apatite binds to the strontium-90, locking it into place while allowing water to pass through.
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