Characterization and monitoring of 300 Area facility liquid waste streams: 1994 Annual report

Riley, R. G.; Ballinger, Mark; Damberg, E. G.; Evans, J. C.; Julya, J. L.; Olsen, K. B.; Ozanich, Richard M.; Thompson, C. J.; Vogel, H. R.

doi:10.2172/52809

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“…Characterization data were needed to determine how well the 300 Area facilities could meet TEDF's planned WAC and to assess the effectiveness of facility administrative controls(a) on releases to the process sewers. In response to this need, Pacific Northwest National Laboratory conducted characterization and routine monitoring of the liquid waste streams from eight hcilities in the 300 Area from March 1994 through September 1995 (Riley et al 1994; Riley et al 1995). The monitoring was done using liquid effluent monitoring stations installed at each facility and at the confluence of all 300 Area process sewer streams (end-of-pipe).…”

Section: Introductionmentioning

confidence: 99%

Pacific Northwest National Laboratory 300 area facility liquid effluent monitoring: 1994 and 1995 field tests

Riley¹,

Thompson²,

Damberg³

et al. 1997

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Pacific Northwest National Laboratory Effluent Management Services manages liquid waste streams from some of the 300 Area buildings on the Hanford Site near Richland, Washington, to ensure liquid discharges to the Columbia River are in compliance with permit requirements. The buildings are owned by the U.S. Department of Energy and operated by Pacific Norihwest National Laboratory. In fiscal year (FY) 1994 and FY 1995, three field tests were conducted to gather information that could be used to 1) increase the understanding of 300 Area building liquid waste streams based on the characterization and monitoring data collected during calendar year (CY) 1994 and CY 1995 and 2) establish imprwed methods for evaluating facility releases. The three field tests were 1) an evaluation of a continuous monitoring/event-triggered sampling system, 2) a volatile organic compound hold-time study, and 3) an investigation of the dilution and retention properties of the 300 Area process sewer. The results from the first field test showed that future characterization and monitoring of 300 Area facility liquid waste streams could benefit significantly from augmenting continuous monitoring with event-triggered sampling. Current continuousmonitoring practices &e., monitoring of pH, conductivity, and flow) cannot detect discharges of organic pollutants. Effluent control effectiveness would be enhanced by incorporating a continuous total organic carbon analyzer in the system to detect events involving releases of organic compounds. V waste stream when the dye was detected. Subsequently, the samples were analyzed by gas chromatography/mass spectrometry. Results from these tests were used to establish relationships among the chemistry of facility effluents, the physical properties of facility waste streams, and the chemistry of the waste stream at encl-of-pipe. Almost all events detected by colntinuous monitoring of pH, conductivity, and flow at 331 Buildiig occurred during regular work hours. R o patterns of waste stream events that appeared to occur on a frequent basis were identified. One pattern appeared to have a chemistry consistent with cage and glass washing activities, while the other may be associated with ongoing life sciences research. Event samples often contained con taminanit levels one to two orders of magnitude above levels observed hi CY 1994 and CY 1995 routine-monkoring samples. However, these elevated concentrations were predlicted to be less than Treated Effluent Disposal Facility waste acceptance criteria or U.S. Environmental Protection Agency maximum contaminant levels at end-of-pipe. The CY 1994 and CY 1995 routine monitoring at end-of-pipe indicated occasional releases of contaminants (e.g., nitrate) at levels significantly above their maximum con taminant levels. These levels likely resulted from releases containing contaminant levels significantly above those observed in the field test (i.e., from concentrated releases from one or more 300 Area facilities). Events resulting in releases of organic compounds may ...

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Section: Introductionmentioning

confidence: 99%