| Issue |
Source |
PMR Approach |
| 2. |
Available groundwater chemistry and isotopic data for the whole Yucca Mountain-Fortymile Wash flow system to its discharge area in the Amargosa Desert should be mapped in detail. The southern end of this system was last examined by Claassen (1983). This task might lead to conclusions regarding amounts of possible mixing of volcanic, carbonate, and alluvial groundwaters in southern Fortymile Wash. |
|
CRWMS M&O 1998b
[summaries, Langmuir] |
Maps have been done. CRWMS M&O (2000m) and Section 3.1.3 discuss hydrochemical data and provide detailed maps. Section 3.1.1.1.3 discusses the hydrochemistry of regional system. Section 3.1.1.2.3 discusses the hydrochemistry of site system.
Section 3.4.4 discusses comparison of hydrochemical data with calculated flow pathways. |
| 3. |
Delta carbon-14 groundwater data from the literature should be corrected using the NETPATH code approach presented to us by Kwicklis in a SZ Expert Elicitation Workshop (CRWMS M&O 1998b). This would provide an internally consistent delta carbon-14 data set for the general area, including the complete Yucca Mountain groundwater flow system. Such data might be useful for computing groundwater travel times and matrix versus fracture flow. |
|
CRWMS M&O 1998b
[summaries, Langmuir] |
CRWMS M&O (2000m, Table 8) document results of the NETPATH code corrections to groundwater carbon-14 ages; Section 3.1.3 discusses hydrochemical data; Section 3.1.1.1.3 discusses the hydrochemistry of regional system; Section 3.1.1.2.3 discusses the hydrochemistry of site system. Section 3.4.2 discusses calibration of model to hydrochemical observations. |
| 4. |
Interpreting and modeling the groundwater geochemical data in the vicinity of Yucca Mountain in the context of the geology and groundwater hydrology should be emphasized. Groundwater chemistry should be related to sampling depths, water levels and transmissivity, fracture zones, specific formations and their mineralogy, and rock matrix versus fracture flow properties. Such an analysis could help explain much of the water chemistry information, which in turn should help us resolve ambiguous interpretations of the groundwater hydrology. |
|
CRWMS M&O 1998b
[summaries, Langmuir] |
Extensive interpretation of groundwater geochemical data done and documented in CRWMS M&O (2000m). Section 3.1.3 discusses hydrochemical data. Section 3.1.1.1.3 discusses the hydrochemistry of regional system. Section 3.1.1.2.3 discusses the hydro-chemistry of site system.
Section 3.4.4 discusses comparison of hydrochemical data with calculated flow pathways. |
| 5. |
Geochemical and hydrologic data and models should be used to evaluate the relative contributions of infiltrating surface runoff and groundwater from under Yucca Mountain to the volume of groundwater flow in Fortymile Wash east and southeast of Yucca Mountain. Runoff infiltration in Fortymile Wash may be the chief dilutent for radionuclides released from the repository. |
|
CRWMS M&O 1998b
[summaries, Langmuir] |
Section 3.1.3 discusses hydrochemical data; Section 3.1.1.1.3 discusses the hydrochemistry of regional system; Section 3.1.1.2.3 discusses the hydro-chemistry of site system; Section 3.4.4 discusses comparison of hydrochemical data with calculated flow pathways. |