ML20042C426
| ML20042C426 | |
| Person / Time | |
|---|---|
| Issue date: | 01/28/2020 |
| From: | Hans A Division of Decommissioning, Uranium Recovery and Waste Programs |
| To: | Priya Yadav Division of Decommissioning, Uranium Recovery and Waste Programs |
| Yadav P | |
| Shared Package | |
| ML20042C425 | List: |
| References | |
| Download: ML20042C426 (2) | |
Text
From: Arlt, Hans To: Yadav, Priya
Subject:
FW: Information request on consistency between CPGWM and the local-scale PA model Date: Tuesday, January 28, 2020 10:02:26 AM Attachments: CPGWM_LocalScale_PA_Comparisons_12192019.pptx Priya, Id like to reference this in the TER. Could you put this in ADAMS?
Thanks, Hans From: Bergeron, Marcel P <marcel_p_bergeron@rl.gov>
Sent: Monday, December 23, 2019 3:09 PM To: Arlt, Hans <Hans.Arlt@nrc.gov>; Esh, David <David.Esh@nrc.gov>; Gladney, Robert
<Robert.Gladney@nrc.gov>
Cc: Ross, Sherri R. (HQ) <sherri.ross@em.doe.gov>; Lobos, Rodrigo A
<rodrigo_a_lobos@orp.doe.gov>; DeFord, Douglas K <douglas_k_deford@rl.gov>; Mehta, Sunil
<sunil_mehta@rl.gov>; Mike Connelly (m.connelly@icloud.com) <m.connelly@icloud.com>; "Matt Kozak" <mkozak@intera.com>; Mcmahon, William J <william_j_mcmahon@rl.gov>
Subject:
[External_Sender] Information request on consistency between CPGWM and the local-scale PA model Hans & Dave, Please find some plots that provide information on the consistency between Central Plateau Groundwater Model (CPGWM) and the local-scale WMA C PA model in their representation of general groundwater flow conditions, the top of basalt, and overall saturated thicknesses.
The first four slides in this PowerPoint file show the overall direction of groundwater flow from tank C-105 inferred from particle tracking in the vicinity of the WMA C in the CPGWM for a time period extending from 2010 to 2013. The overall direction of flow inferred from the particle tracking in the CPGWM is consistent with NW to SE flow direction assumed in the local-scale STOMP-based PA model. Slide 5 shows the direction of groundwater flow inferred from particle tracking from tank C-105 in the local-scale WMA C PA model. This overall direction of flow in CPGWM is similar when it reaches steady state but with a slightly lower water table elevation and associated saturated thickness. The tightly-spaced particle tracking pattern exhibited in the local-scale WMA C PA model reflects the effect of the fine grid spacing used in the interior of the WMA C PA model.
The next two slides show the top of basalt and overall saturated thickness of the aquifer represented with the 100 m by 100 m grid spacing used in the CPGWM.
The remaining two slides show a comparison of the top of basalt and saturated thicknesses of the unconfined aquifer in both the CPGWM. The local scale top of basalt surface is taken the Central Plateau-scale LeapFrog model of the geology interpolated onto a fine grid used to build the local-scale STOMP based models, In general, these comparison show an overall consistency in the top of basalt and saturated thickness of the unconfined aquifer between the two models. Deviations between the two models
are largely attributable to the grid resolution of the two models.
Please dont hesitate to give me a call if you have questions.
Marcel Marcel P. Bergeron Staff Scientist, Closure and Interim Measures marcel_p_bergeron@rl.gov Office: (509) 376-4935 Cell: (509) 554-4924 contractor to the United States Department of Energy