Table 39. Conceptual Source Pathway Receptors Post Mining
Mine waste / tailings area
Main sources of sub surface and groundwater flow
Main flow pathways for sub surface and groundwater flow
Main discharge points for sub surface and groundwater flow
Conceptual source-pathway-receptor summary for preliminary mine plan (post mining) Shepherds Gully
Up gradient groundwater in shallow bedrock Remaining tailings (if of sufficient volume to facilitate storage of water)
Remaining mine waste (Shepherds Gully tailings) Shallow bedrock
Shepherds Holding sump: Shallow groundwater flow predominantly originating from up gradient groundwater with potential for minor toe seepage from remaining Shepherds Gully tailings via subsurface flow. Shepherds 2 South sump: Shallow groundwater flow predominantly originating from up gradient groundwater. Shepherds Spring: Shallow groundwater flow, predominantly originating from up gradient groundwater. Dee River: Predominantly as shallow groundwater flow. No. 2 Mill sump: Predominantly as shallow groundwater flow originating up gradient with potential for minor toe seepage from remaining tailings. Dairy Creek and Dee River: Predominantly as shallow groundwater flow. Mundic West sump: Sub surface flow and shallow groundwater flow predominantly originating from OCP / Sandstone Gully TSF. Frog Hollow sump: Up gradient shallow groundwater flow and sub surface flow including sub surface flow originating from Mundic West sump, with minor contribution from sub surface flow through mine waste and shallow groundwater flow through Linda Creek area.
(Shepherds Holding sump, Shepherds No. 2 South sump)
2 Mill (No. 2 Mill sump)
Up gradient groundwater in shallow bedrock Remaining tailings (if of sufficient volume to facilitate storage of water) Minor contribution predicted from Horse Paddock Dump (infiltrated rainfall held in mine waste) Water stored in OCP/Sandstone Gully TSF (reduced volume in comparison to pre-mining) and Upper Mundic Gully TSF Remaining Mundic Creek mine waste (infiltrated rainfall held in mine waste) Upgradient groundwater in shallow
Remaining mine waste (2 Mill tailings) and minor flow through Horse Paddock Dump Shallow bedrock
Mundic Creek inc Upper Mundic Gully
Seepage of water from OCP / Sandstone Gully TSF and Upper Mundic Gully TSF through adjacent mine waste, and through mine waste within Mundic Creek Seepage of water through shallow bedrock of Mundic Creek and Linda Creek
bedrock (reduced volume in comparison to pre-mining)
Project number: 25B061
Page 118
Powered by FlippingBook