Hanford Site Groundwater Monitoring for Fiscal Year 2002

Hartman, Mary J.; Morasch, Launa F.; Webber, William D.

doi:10.2172/15010110

Cited by 59 publications

(150 citation statements)

References 0 publications

Supporting

Mentioning

144

Contrasting

Order By: Relevance

“…For a more complete discussion of the goals of the Groundwater Performance Assessment Project, see the overall work plan, Hanford Site Groundwater Monitoring for Fiscal Year 2003 (Hartman et al 2004). …”

Section: Introductionmentioning

confidence: 99%

Investigation of Accelerated Casing Corrosion in Two Wells at Waste Management Area A-AX

Brown¹,

Serne²,

Schaef³

et al. 2005

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Investigation of Accelerated Casing Corrosion in Two Wells at Waste Management Area A-AX

Brown¹,

Serne²,

Schaef³

et al. 2005

View full text Add to dashboard Cite

“…Williams et al (2002) provides an updated reinterpretation of the hydrogeology in the 200 West Area and vicinity that includes characterization of the entire suprabasalt aquifer system. The most recent description of the groundwater contamination in the region of the Hanford Site surrounding the 216-U-12 crib is presented in Section 2.8 of Hartman et al (2003).…”

Section: Part II 2 Hydrogeology and Conceptual Modelmentioning

confidence: 99%

“…Most known contaminant plumes that emanate from the 200 West Area migrate 2.8 through Unit 5 toward the east. The groundwater flow direction is approximately toward the southeast and is estimated based on water-level measurements taken in network and surrounding wells (e.g., Figure 2.1-1 in Hartman et al 2003).…”

Section: Hydrogeology Beneath the 216-u-12 Cribmentioning

confidence: 99%

“…These data reflect averages of data collected from wells throughout the Central Plateau. Based on these values and parameters listed in Hartman et al (2003 , Table A.2), the groundwater flow rate (Darcy velocity) ranges from 0.02 to 0.08 m (0.1 to 0.3 ft) per day. Thorne and Newcomer (1992) Unit 8 (Ringold Formation Lower Mud Unit) 0.0003 to 0.09 Wurstner et al (1995); Thorne and Newcomer (1992) Unit 9 undifferentiated Ringold Formation Unit A 0.1 to 200 Wurstner et al (1995); Thorne and Newcomer (1992) Note: This table is modified from Cole et al (1997).…”

Section: Hydrogeology Beneath the 216-u-12 Cribmentioning

confidence: 99%

See 1 more Smart Citation

Monitoring Plan for RCRA Groundwater Assessment at the 216-U-12 Crib

Williams¹,

Chou²

2005

View full text Add to dashboard Cite

show abstract

“…Moreover, ground water flow directions have changed, leaving gaps in the current monitoring networks for a number of facilities and waste sites. In some areas of the 200 East Area, a large number of the monitoring wells have gone dry and cannot be deepened because there is no saturated sediment above the underlying basalt bedrock (Hartman et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Identifying the Potential Loss of Monitoring Wells Using an Uncertainty Analysis

Freedman

Waichler²,

Cole³

et al. 2005

Groundwater

View full text Add to dashboard Cite

From the mid-1940s through the 1980s, large volumes of waste water were discharged at the Hanford Site in southeastern Washington State, causing a large-scale rise (>20 m) in the water table. When waste water discharges ceased in 1988, ground water mounds began to dissipate. This caused a large number of wells to go dry and has made it difficult to monitor contaminant plume migration. To identify monitoring wells that will need replacement, a methodology has been developed using a first-order uncertainty analysis with UCODE, a nonlinear parameter estimation code. Using a three-dimensional, finite-element ground water flow code, key parameters were identified by calibrating to historical hydraulic head data. Results from the calibration period were then used to check model predictions by comparing monitoring wells' wet/dry status with field data. This status was analyzed using a methodology that incorporated the 0.3 cumulative probability derived from the confidence and prediction intervals. For comparison, a nonphysically based trend model was also used as a predictor of wells' wet/dry status. Although the numerical model outperformed the trend model, for both models, the central value of the intervals was a better predictor of a wet well status. The prediction interval, however, was more successful at identifying dry wells. Predictions made through the year 2048 indicated that 46% of the wells in the monitoring well network are likely to go dry in areas near the river and where the ground water mound is dissipating.

show abstract

Hanford Site Groundwater Monitoring for Fiscal Year 2002

Cited by 59 publications

References 0 publications

Investigation of Accelerated Casing Corrosion in Two Wells at Waste Management Area A-AX

Investigation of Accelerated Casing Corrosion in Two Wells at Waste Management Area A-AX

Monitoring Plan for RCRA Groundwater Assessment at the 216-U-12 Crib

Identifying the Potential Loss of Monitoring Wells Using an Uncertainty Analysis

Contact Info

Product

Resources

About