Territory Stories

Renison Goldfields Consolidated Limited, Pine Creek Project. Groundwater Investigation Stage 2, Establishment of Borefield and Management Studies. Report H114/3-AA.

Details:

Title

Renison Goldfields Consolidated Limited, Pine Creek Project. Groundwater Investigation Stage 2, Establishment of Borefield and Management Studies. Report H114/3-AA.

Creator

Coffey & Partners Pty Ltd

Collection

E-Publications; E-Books; PublicationNT; Report no. 87/1984

Date

1983-11-01

Notes

Date:1983-11

Language

English

Publisher name

Northern Territory Government

Place of publication

Darwin

Series

Report no. 87/1984

File type

application/pdf

Use

Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government

License

https://creativecommons.org/licenses/by/4.0/

Parent handle

https://hdl.handle.net/10070/228435

Citation address

https://hdl.handle.net/10070/674167

Page content

Technical Report WRD84087 Viewed at 14:07:14 on 29/07/2010 Page 10 of 167. I t j I L -~ I I ! I I I I I .,.. .a. I I I I I I I I j' , I I I , ~ ;zc Coffey & Partne~$ ?tv, Ltd. H1l4/1-MRS Nov 26, 1983. Water levels in one or two bores adjacent to the mine are expected to decline by 2 to 3 metres, and this may result in loss of supply during the period prior to break of the wet season. This loss of supply may amount to 2.0 litres/sec 1 although the eL ts will be progressive, and monitoring \"i11 provide ample time to instigate re~edial measures. Current mine planning allows for disposal of tailings wlste and 2. dumping of wasterock in an a:!'ea immediately to the south of the mine. .~ \"..-""""~ '_ Seepage of tailings water and leaching of overburden material.is l~kely to result in t.."1e formation of ,..,,.aters with low pH, .high sulphate and higher concentrations of selective :.0avy metals,.....-.,..-p.:i:.t;.icular:y i arsenic. TCltal seepage losses in the order of 24 11L/ap.nurn will move 03 L S', to Lhe water table by the process of infiltration and pen;91ation. Under current planning the waste water will flow to the e&~, be recovered in the process borefield and returned to the process water reservoir . A monitoring program has been formulated to observe the effects of mining on the groundwater regime. This includes a detailed prograw of water level monitoring and water sampling. As part of t~e.basellne, pre-mining studies, a 30 day continuous automatic water level recorder hdS been insta.lled on existing bore R'1' 1878~ This will allow t..i'J.e Bffects of mine dewatering on the town borefield to be documented, and will provide new i:1formation on the ,.;:tent of aquifer recharge., which will assist in water resource evaluation~ , - 55 fl-"