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 49 of 167. I I I I I I I I I I I I I I I I I I I H1l4/1-MRS Nov 26, 1983 27. .---~-------------------------------------I In general Lore yields are limited by : the presence of strong impermeable boundary canci t j,ons which increase thr drawdow"TI gradient (b) limited available dra,,.,down or pump submergence T0ble 11 provides reco~uended pumping rates for various bures tested during the field proga~. The yields have been deterr.tined by a linear f.t""ojection of the drawdoirm data to 550 days. This assumes : (b) (c ) the cone of drawdown created by pumping does not lncerccpt further bounc~ry conditions ti1.J.t ufter 550 days the system will be recha~ged via rainfall infiltration the aquifer has sufficient ae~ial extent tn sustain rroductio:1 through depletion of storage. '1'i.is aspect. 15 ex~mined in more detail in Sectiun 6. vl;:ter level data from al.l bores were reduced to .a.ust.:::-al":"an H~ight Datum, and are presented as a ~...rater level contour p1nn (Figure 15). AHD cO:1trol wC.s provided from 2. survey conducted by G,d-_ter idge Haskins and DrJvey (Nov 1983 - see Append ix 5). It should be noted that survey cont~ol for existing DTW b(1r "5 relates to the Pine Crf'"'ek to'ilffisite datum whe:::-e AHD = RL - 2.984 m. Figure 15 illustrates the regional water table configuration from wh ich the direction of ~jrDundwiJtcr movemBnt has been assessed~ Groundwater movement across AREA 1 is to the east-n.ort~-east under u gradient of 0.009-0.014. The direction of movement is in sympathy with the topography and surface dr<J.inage. AREA 2 W,'1 f cr levels in AREA 2 v;' .. ry between 165 and 180 m AHD and ~ndicate movement to the south east under a gradient which vd=ies between 0.008 and 3.6 x 10- 3 . The shape of the contours sugg~sts that in one form or another Copperfield ,-... QQ. Lza! .