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 61 of 167. I I I I I I I I I I I I I I I I I I , I I I ! H1l4/1-HRS Nov 26, 1983 36 _ ------~--------------I In ~ddition to those areas nominated, there is also scope for further exploration within the Burrell Creek Formation ~jaccnt to the contact with the Cullen Granite. Prospective areas exist both south and east of t...'l1.e mille site, although distance and cost become a consideration. In the first instance any augmentation of water supply is likely to involve an extension of the existing borefields ir. order to minimize costs a..!".d make use of existing infrastructure. Barefield Operation and Management Studies by the DTW have sho'wn that water quality in a !l1..1.wcr of bores in the Kybrook Farm area is prone to high drsc"!1ic ,)nd zinc levels which render the' 'dter generally \.,msIJ~tdblc fQ:;o:" dOr.lestic use. Based on these considerations it is proposed that the mine 'process water requiremcnts be drawn from AREJI.. 2 (Kybrook Farm _]rtJ-Zl) and !)otablc requirements [rom AREA 3 nea:::- the Francis Creek rowe. This ~r~roach me~ns : {d} Thp pot,J}.)lc borcfield m-1n,c'-plunt arca. is locat.ed well al,<;ay from the (b) 'Thf) process watc~ Source is located c.irectly south of th0 mine area, and p:J.rt of the borefield is sit.uatec. down stream of the cdili!1gs dispos;::.l area and proces'",; 'N'J, tc'r reservoir. 1 t is a(.:knowlcdgcd tha t some high arsenic levels have ~een dc-tec'ted in Area 3 (Bore ~<]18), however the option of loca-:.ing the Sou~ce of potdble -"'ater well clear of the mine waste d~sposal areas is favoured. ".~'. 1 Operational Aspects A number of operational considerations arise in connection with the safe operation and management of the boreields and thes~ arc likely to have some bearing in fo~ulating the overall mine water management strategy. ( 1 ) ( 2 ) The aquifers arc characterized by low porosity and permeability which results in localized a:1c:l s~qf'llfic<J.nt depletioil. of storage during pumping. This depletion of storage is compounded by a large s~asonal water table recession due to natural discharge. 'rhe saturated aquife::::- thickness is generally less than 15 metres and available drawdown is often less than 10 metres. This creates problems in obtaining ddC't'IUil tc ~ump submergence.