Groundwater Monitoring and Tritium-Tracking Plan for the 200 Area State-Approved Land Disposal Site

Barnett, D. Brent

Pacific Northwest National Laboratory (U.S.)

关键词: Monitoring;    Tritium;    Ground Water;    Ground Disposal;    Groundwater;   

DOI  :  10.2172/965183
RP-ID  :  PNNL-13121
RP-ID  :  AC05-76RL01830
RP-ID  :  965183

美国|英语

来源: UNT Digital Library

【 摘 要 】

The 200 Area State-Approved Land Disposal Site (SALDS) is a drainfield which receives treated wastewater, occasionally containing high levels of tritium from treatment of Hanford Site liquid wastes. Only the SALDS proximal wells (699-48-77A, 699-48-77C, and 699-48-77D) have been affected by tritium from the facility thus far; the highest activity observed (2.1E+6 pCi/L) occurred in well 699-48-77D in February 1998. Analytical results of groundwater geochemistry since groundwater monitoring began at the SALDS indicate that all constituents with permit enforcement limits have been below those limits with the exception of one measurement of total dissolved solids (TDS) in 1996. The revised groundwater monitoring sampling and analysis plan eliminates chloroform, acetone, tetrahydrofuran, benzene, and ammonia as constituents. Replicate field measurements will replace laboratory measurements of pH for compliance purposes. A deep companion well to well 699-51-75 will be monitored for tritium deeper in the uppermost aquifer.