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 57 of 167. , I /,I H1l4/1-MRS 1I~~~~~~~No~v~26~'~19~8~3~. ____ ~ ____________________ _ 33. 'I , I I I I I I I I I I I j I , , I ~ I 1 The following general assumptions have been applied in estimatIng corrunandable storage within AP..EJ!I. 2! as defined. Areal Extent Satur~ted Thickness 1 Storage coeffLcient 2 Performunce Factor <')mmandable SLor<J.ge 6 5.610 x 10 ~ (see Fig. 16) 10 rn 0.01 0.75 = 5.610 x 10 6 x 10 x .01 x 0.75 = 420200 m' )\t a d~scharge 0f say 9 l/sec the I aC!uifer r could pot.e:1tially sust,l '.~ pumping vi.]. storage depletion f,,1:." a period of 540 d,zI.Ys ~l. 5 y""'ars} 'without ~cchD.rge. These calculations neglect any contribution "Ilia grcundwater throughflow, J..e. it aSSl..':mes thot all water is derived by depIction of storage alone. From these figures it is fairly cle~lr tht~t, in the longer term the ability of the aquife:::. depend on periodic recha:::.-ge. tcntiJl is examined in mo~e detuil in Section 6.3. j\REJ"\ 3 The D0UtH1aries to AREA 3 are illustrated in Figure 16. The wesf"cr:1 boundJ.:::-Y is defir:ed by the 180 metre 'date:::.- table c:onb.~Ju.r~ West of that line t the contours rapidly fall to l()Or.1 aove AHD. The eastern and northern boundaries are def lned In p<J.rt by geology and topograp:-ty. There may be some scope for extending the area to the no:::.-th t beyond WIS, although additional drilLing is required to confirm this. C'nnm<lncable Storage is estimntec. as :ollows ArGo 1 Exten t 1 So;1 turn ted thickness 2 Storage Coefficient Performance Factor Cornmandable Stor[l.fle 6 2.495 x 10 m2 10 m 0.01 = 2.495 x 10 6 x 10 x 0.01 x O~75 = 187125 ro' Allows for 1 eakage from outside the area under consideration. Assumes the bores can extract 75% of available groundwater by depletion of storage~