i mud tank -mining water supply · the mud tank gemfield is located approximately 160 kill...
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Technical Report WRD95036
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I I I I I I I I I I I I I I I I I I I I
Report No: 36/1995A
E.ROOKE
Mud Tank - Mining Water Supply
Bore Completion Report
RN 16676 AND 16677
SUPERVISING HYDROGEOLOGIST SOUTH
WATER RESOURCES BRANCH, ALICE SPRINGS
August 1995
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SYNOPSIS
Two mining water supply bores, RN 16676 and RN 16677 have been
constructed for Australian Vermiculite Industries Ltd. on land
portion PL 3790 which encompasses Mud Tank Mineral Lease (MLS 165).
Bore RN 16676 has a recommended maximum yield of 0.5 Lis. RN 16677
has not been tested; however it should be capable of producing 1 Lis.
RN 16676 intercepts water of potable quality. RN 16677 yields very
saline "l1later suitable only for industrial use.
RN 16676 yields water from a sedimentary rock aquifer of Cainozoic
age, "l'lhilst RN 16677 draws water from a fault zone in Arunta Block
metamorphic rocks.
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I I I I I I I I I I I I I I I I I I I I
SUBJECT
GEOLOGY
LOCl'.TION
KEYWORDS
Mining water supply
Mineral Lease
sedL~entary rock (sandstone)
Cainozoic
Waite Basin
metamorphic rock (gneiss/granulite)
Strangways Metamorphic Complex
Arunta Block
fault zone
Mud Tank Gemfield
Plenty Highway
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I I I I I I I I I I I I I I I I I I I I
1.
2 .
3 .
4.
5.
6.
7.
8 .
1.
1.
2.
3 .
4.
A.
B.
C.
INTRODUCTION
B."I.CKGROUND
PHYSIOGRAPHY AJ.'ID GEOLOGY
h-WROGEOLOGY
DRILLING AND TESTING
CONCLUSIONS
RECOMMENDATIONS
REFERENCES
\'lATER QUALITY DATA
LOCATION MAP
LOCALITY MAP
GEOLOGY MAP
BORE LOCATION ~~
COMPOSITE LOGS - RN 16675
- RN 16676
- RN 16677
- RN 16678
CONTENTS
TABLES
FIGURES
APPENDICES
LOG GRAPH OF 100 MINUTES' DRA~IDOWN VERSUS DISCHF~GE - RN 16676
TEST REPORT - RN 16676
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I I I I I I I I I I I I I I I I I I I I
bgl
EC
ID
kID
Lis
m mg/L
OD
Ern
SWL
TD
TDS
f.LS/cm
below ground level
electrical conductivity
inside diameter
kilometres
litres per second
metres
milligrams per litre
outside diameter
registered number
standing water level
total depth
total dissolved solids (in mg/L)
microsiemens per centimetre
AUSTRALI&~ VE~~CULITE INDUSTRIES Ltd
DEPARTMENT OF MINES Al.~ ENERGY (through
WATER RESOURCES LIBRARY, ALICE SPRINGS
WATER RESOURCES LIBRARY, DARWIN
PAWA LIBRARY, DARWIN
PRINCIPAL ENGINEER GROUNDWATER
AUTHOR
ABBREVIATIONS
DISTRIBUTION
2
REGIONAL DIRECTOR SOUTE) 1
3
1
1
1
1
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1. INTRODUCTION
The Mud Tank Gemfield is located approximately 160 kill north-east of
Alice Springs (Figure 1). Access is via 8 kill of public graded road,
southwards from Mud Tank Bore which is situated beside the Plenty
Highway (Figure 2). The mineral deposit of economic interest,
vermiculite, is planned to be won by Australian Vermiculite
Industries Ltd (AVI) from Mineral Lease MLS 165 which covers Zircon
Hill (see Figure 2).
Portion PL 3790 (which includes MLS 165) was surveyed in the interest
of mineral deposits (vermiculite and zircon) and its title is vested
in the N"T Land Corporation. The area is surrounded by l'~coota
Pastoral Lease. Blue Circle Southern Ca'llent Ltd' held an exploration
title (AS81) for an area previously reserved by Depar~-nent of
Minerals and Energy (DME) , RO 303, for its mineral potential. Our
services were retained by AVI, hereinafter referred to as the client,
to drill mining water supply boreholes. Upon advice from the
Registrar of the DME, DarN'in, the search for water bore sites 'tlaS
restricted to PL 3790. Initially more favourable sites had been
selected for drilling within RO 303 but outside PL 3790. Furthermore,
as we underst~"d it, a company geologist had selected ~~d pegged a
site within MLS 165, which we were instructed by the client to drill
first.
2 • BACKGROUND
Following an exploration programme, initiated by Blue Circle Southern
Cement Ltd at Mud T~"k, exploitable reserves of vermiculite (a type
of mica) have been identified (Clutha Minerals Ltd, 1993). The
development is in an area recognised as a source of gam quali ty
zircon where fossicking is active.
1 We understand that AVI have bought out Blue Circle Southern Cement held vermiculite deposit.
the interest that in the Mud Tank
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Water Resources Bra..ch, PAWAwas requested verbally by DME to provide
a professional opinion concerning the prospects of finding
groundwater at the Mud Tank Gemfield (Re. 480.1C, Internal liRE file,
May 1995). The prospect was rated as fair; furthe.!.,nore it was
emphasised any water strikes made would almost certainly yield poor
quality water.
At the request of the Regional Director South, PAWA, Water Resources
Branch had telephone discussions with the client in June 1995. It was
agreed that WRB would proceed to drill a bore(s) and complete one for
production purposes if successful. The client forwarded $10,000-
based on our estilnate of operational costs and the drilling rig
arrived on site on 13th June 1995.
Several environmental issues impact upon the results of the drilling
works. According to an envirop~ental management statement (Clutna
Minerals Ltd, 1993), the client will negotiate with the gemstone
community the possibility of making available a supply of water to
fossickers at Mud T~~k from the company's bore. Water will not be
used in the mining and ore processing plant, i.e. it is a dry process
(ibid, 1993). Concerning potential pollution hazards, it is stated
(ibid, 1993) that no chemicals will be used either during mining or
for ore processing which otherwise might locally contfu~inate
groundwater. Water will be required for dust suppression along mine
haulage tracks.
An accommodation block at the minesite will house five persons (only
three persons are needed per production shift), (Clutha Minerals,
1993). Based on a generous per capita usage of 1 kl/head/day, then
5 kl/day maximu.rn (or 0.06 Lis) of water should satisfy domestic
requirements. An unspecified quantity of water will be needed for
other uses, such as construction works, dust suppression and
fossickers' supply.
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3. PHYSIOGRAPHY AND GEOLOGY
Zircon and Specimen Hills rise to about 10m above alluvial flats
along and to the north of Marktree Creek. Marktree Creek drains into
Waite Creek; all form part of the major drainage basin of the
Sandover River. A dissected hill range occurs immediately south of
the area of interest and trends east-west.
On a regional scale, Mud Tank lies within the Joker Flat Structural
Block of the Strangways Metamorphic Complex. This complex forms part
of the Proterozoic - aged Arunta Block (BMR, 1984). Rock types
consist of granulites and gneiss. An amphibolite facies schist zone,
the West Bore Schist Zone, cross-cuts the gr~~ulite 1 km south of the
area of interest. Tr~ee km to the south west, Heavitree Quartzite
crops out in narrow ridges; it has been deformed and uplifted against
the country rock. One km west, Cainozoic, white chalcedonic
calcareous s~~dstone occurs as an inlier surrounded by Quaternary '1 . a_ UV~u.ln.
The v,oolanga Lineament was the locus for intrusion of igneous rocks,
including the Mud Tank Carbonatite (with which zircon gemstones are
associated). It intrudes granulite in a north-east trending fault
zone approximately 7 km east of and conjugate to the major lineament.
The carbonatite underwent faulting and weak metamorphism during the
Alice Springs Orogeny. various types of mica mineral, including
commercially valuable vermiculite, are zoned around the carbonatite
and result from alteration of mafic igneous rocks by hydrothel"tal
activity.
The regional geology is shown on Figure 3.
Eluvial deposits of zircon, apatite ~~d haematite/magnetite occur on
the fla.~ks of Zircon and Specimen Hills and the area is cut by q~artz
and magnetite dykes. Alluvium occurs within the area of interest and
becomes extensive to the north (i.e. downstream of Marktree Creek
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northwards to Mud Tank Bore and beyond into the Cainozoic Waite Basin
described by Shaw et aI, 1975 and Senior et aI, 1995).
4. HYDROGEOLOGY
Previous drilling has met with mixed success in this region and water
strikes have invariably yielded small supplies «1 to 5 LIs) of poo~
quali ty ',.;ater, unacceptable for potable use (TDS values 2, 500 to
7,900 mg/L). Furthermore, yields and quality appear to ch~~ge over
distances of only tens of metres indicating isolated aquifers of
limited storage which may be subject to dewatering. Most drillholes
have targeted both the granulite/gneiss and schist 'tlith greater
success in the fOL,ner with water strikes occurring at shallow depths
(typically 16 m). Those penetrating schist have had to be drilled
deeper with less confidence of striking supplies due to their
tightness when fresh and transformation to clays when '."eathered.
The record of a roads bore (RN 13904) which has been geologically
logged' by the author (originally logged by the driller) indicates
that it intercepted sedi.'llentary rocks, Drilled in 1984, despite
yielding 0.6 L/s of TDS 2,500 mglL, it was deemed a dud and
backfilled. It was drilled adjacent to RN 1673, "Mud Ta;'lk Bore"
(neither soil cuttings nor log available). The latter had a Sw~ of
30.5 m bgl measured in January 1994.
5. DRILLING AND TESTING
Sites originally identified within RO 303 as prospective for
groundwater (Re. 480.lc, May 1995) were ruled out upon later
receiving advice from DME concerning land ownership that drilling
should be restricted to PL 3790, The first site, south-'."est of Zircon
Hill had targeted a fault zone within the metamorphic rocks, whilst
the second, 6 KID due south of Mud Tank Bore on the alluvial flats,
was anticipated to penetrate sedimentary rocks.
2 copy on Bore file RN 13904 held at ~ffiB, Alice Springs.
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Sites that were drilled are sho~n on Figure 4. Composite logs of the
boreholes are included as Appendix A. Drilling took place between
13th and 20th June 1995.
Acting on instruction from the client, Bore RN 16675 was drilled at
a pre-defined site identified by independent advisers to the client.
A seepage was struck at 23.5m with an EC reading of 8,150 ~S/m. The
hole was drilled down to 55 m with no increase in yield in a unifoL'"
rock type (slightly weathered to fresh gneiss) . It was backfilled and
abandoned. During the drilling of this site three other sites were
selected by the author.
RN 16676 was drilled 800 NNE of ~~ 16675 on a floodplain near the
confluence of several creeks. Adjacent to the site to the east,
running north -south was a low but pronounced "terrace" of quartz
gravel. &'\f 16676 struck 0.2 Lis of potable quality water at 55 m in
sandstone which increased as drilling continued to 0.5 Lis. Drilling
was terminated at 67 m. The hole was lined with 150 rom NB steel
casing to 66.6 m with perforations made from 53.9 to 60.2 m.
(The sedimentary rock aquifer penetrated by &~ 16676 is probably the
same one intercepted by RN 13904 (see above). Locallv, it probably
delineates the southern-most margin of the Waite Basin) .
RN 16677 was sited Lrrnnediately south of a quartz "dyke" striking
eastwards where it was cross-cut by a magnetite-rich vein running 11 , t "he t ., • S . F.. " , D '1" d' 9t· para_ e_ 0 _ s r~Ke o~ pec~men "~~_. r~ _~ng commence on _ n
June. Rock type encountered was a calcareous schist with quartz
veining. A seepage was struck at 18.5 m which increased to 0.1 Lis
at 30.5 m with an EC of more th~~ 10,000 uS/em. The hole was left ,
open and the rig moved to the next site (see below). The rig was
moved back over this hole on 20th J~~e and it was drilled on to a
total depth of 57.5 m. A supply of 1 Lis was encountered between 44
m and 47 m. A production string of 150 rom NB steel casing ,.;as run . h hi· h 9 '" b 45 d -1 - . 1 ~nto t e .0 e w~t mm per.l.orat~ons set etween. m an ::>_.:0 m og .
RN 16678 I.;as drilled 700 m west of RN 16677 and 100 m north of the
sal'!!e fault targeted by &~ 16677. It ',,·as sited on a creek bank along
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~
strike from a quartz dyke which terminated abruptly against the
opposite ba.."lk. After penetrating highly to extremely weathered gneiss
the rock became harder with depth and drilling was abandoned at 40
m after hitting fresh gaL~let-rich gneiss at 36 m. This dry hole was
backfilled.
A three by 100 minutes step-test (at 0.2; 0.4 and 0.6 Lis) ''''as
carried out on RN 16675 on 16th June 1995. SWL prior to co~~encing
pumping was 45.3 m bgl. After allowing 18 hours recovery, a second
step- test was done commencing at a rate of 0.6 LIs; increased to 0.8
Lis for the last 100 minutes. The pump used was a "640 Mono" powered
by a 3 cylinder Lister diesel engine. It was installed at 54 rn bgl,
that is at the top of the perforated casing. At 0.6 Lis a maximum
drawdown of 5.3 m occurred which, ostensibly, had levelled out. At
0.8 Lis there was 8.2 m of drawdown which continued to accelerate
until the bore was on the verge of forking. Pn analysis of the tests
is given as Appendix B. Care should be taken in any interpretation
of this graph as steady-state conditions were not attained.
Based on short duration test pumping, the recommended pumping rate
for RN 16676 should not exceed 0.5 Lis continuous discharge. The pump
should be set at 54 m bgl; this provides 8 m available drawdown at
present water table conditions. It is understood that the client is
installing a header tank; this should allow for 24 hours' storage in
case of pump failure or maintenance. Ideally, an air-line (in the
bore) and a meter (delivery main) should be installed to measure
pumping water levels and abstraction, respectively.
EC readings remained consistent for the duration of test :;H.l-,uping
(range of l360 I.lS/c.'Il to 1480 I.lS/cm), indicating chemically good
quali ty water, sui table for drinking. Turbidity was high for the
first hour of pumping with a yellow discolouration; thereafter
becoming clean with no suspended solids. Bacteriological testing was
not done.
The client was satisfied with the level of testing on fu~ 16676. He
did not require bore RN 16677 to be tested ("hich will not be
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equipped for now). Ideally, because of the saline water, the bore
casing in RJ."'J 16677 should be lined with an inert material or
withdrawn and replaced likewise. Severe corrosion of the presently
installed mild steel casing should be anticipated, especially if the
bore is p~~ped. Should water from RN 16677 be used in the future; for
example ~n dust suppression, DME should be consulted beforehand for
comment on the possible damaging environmental impact of very saline
water dispersion on soils and surrounding vegetation.
6. CONCLUSIONS
A small supply requirement of 0.1 Lis continuous yield, mainly for
domestic use by the mine caup and for secondary purposes such as
construction has been satisfied by the completion of Bore RJ."'J 16676.
RN 16676 was finished as a production bore ~~d draws water from a
thin, sandstone aquifer believed to be of Cainozoic age.
Short duration test pumping performed on Rl"'J 16676 indicated a ~ximum
sustainable yield of 0.5 Lis of potable water.
Bore R.."l 16677, drilled into a fault zone in metamorphic rocks,
although cased was not test pumped. It yielded 1 Lis of very saline
water during drilling.
7 • RECOMMENDATIONS
1. Rl"'J 16676 should be pumped at a maxL~um continuous rate of 0.5
Lis with the pump set at 54 m bgl. This will allow 8 m available
drawdown, based on present S'fu. (Note that "Territory Pastoral
Services" were hired by the client to equip the bore. They have
installed a "Mono B Mk.3 320" submersible pu.,.-np (rated at a
maximum discharge of 0.6 Lis at 90 m total head) (Pers. Corrm.,
June 1995). A header tank should be constructed near the
accommodation block with sufficient storage volume for a 24
hours' supply, to secure against p~~p down-time.
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3 .
4.
5.
6.
R-~ 16677 should remain not equipped until such time as the mine
commences operation. Subj ect to an environ.-nenta1 statement
addressing salinity impact on soil I vegetation, this bore could
then be used for dust suppression.
The client might consider re-1ining RN 16677 with inert casing
such as PVC to protect the bore from corrosion. This step ~s
reco~-nended especially if the bore is to be equipped.
Means to monitor water levels and a water meter should be fitted
to the bore(s), during equipping. The client should measure and
report on groundwater drawdown levels.
The SI'/L and total depth should be noted each time p\L'1lping
equipment is removed from Bore 16676.
7. To minimise risk of aquifer conta..-nination, no development should
occur within a 200 m radius of Bore 16676, which is used to
obtain drinking water.
8. Bacteriological and chemical analysis may be carried out on the
production bore &"\f 16676 on a 6 monthly basis, to ensure 'Mater
quality remains wholesome.
Aerial Photographs
CAG4094, 1975
Clutha Minerals Ltd, 1993
8. REFERENCES
Alice Springs F53-14. Run 1
Nos. 0139-0143. Scale 1,75000
The Mud Ta..'1k Vermiculite Project
Mud Tank, Northern Territory.
Preliminary Environmental Report
to Accompany Mineral Lease
Application No. MLS 165
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I I I I I I I I I I I I I I I I I I I I
])J'"T Department of Mines and
Energy - Environment Div.,
1994
Shaw, R.D. and Langworthy,
A.P., 1984
Shaw R.D. et al, 1975
Senior, B.R. et al, 1995
Assessment
Recommendations
Supplement for
Report &
on PER &
The Mud Tank
vermiculite Project
1:100000 Geological Map
Commentary. Stran~Nays Range
Region I NT. Bureau of Mineral
Resources (BMR) , Canberra.
Geology of the Alcoota 1:250000
Sheet, NT. BMR Record 1975/100
Cainozoic Sedimentary Basins in
the eastern Fxunta Block, Alice
Springs Region.
AGSO Jo Aus Geol & Geophys. 15
(4), pp 421-444.
Technical R
eport WR
D95036
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- - - - - - - - - - - - - - - - - - - -~ In ITIIiJroms per 111m -lII\)l ~ "'_ olalOd) -- --- - - ,
IJORE DAlE SPECIFIC TOTAL SOOlUM POTASS- CALCiUM IlAGlIES- IfION TOTAL TOTAL SIOCA CHLORIDE SULPHATE I!I11lATE DiCARD- Al!OIlIDE ICAlC COWEJITS REGiSTEnED OF COIIOOCT- OISSOLVED II!W IUIII (TOTAl) lIARD- ALKA- ONATE FROM
}lUI1lBER SAUPlJIlG ANCE SOUOS NESS UliIlY CULOR·OEJ
RII _'" IDS pI/ lis K C. If!} Fo c.co, CaCa, SIO, CI SO, /I(J, Ilea, F HaCI
16675 14/6195 8200 5960 7.9 1400 45 220 352 4.7 2000 349 13 1680 2040 59 425 1.2
16676 11l/6/95 1465 884 7.6 183 8 39 36 uts 254 340 43 238 105 <1 414 0.9
16676 17/6/95 1566 925 7.8 189 7 85 59 ut6 455 390 61 235 102 7 476 0.6
16Bn 20/6/95 211/JO U/S 7.B 4010 U/S U/S uts UlS UlS 467 UlS 6190 Uts U/S 569 U/S
-
NHMRC GUIDELINES ... 1600 6.5- 0.3 600 400 400 100 1.7 Maxim •• xceptpll range S.5
.
WATER QUALITY DATA
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I I I I I Figures
I I I I I I I I I I I I I I I
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I I I I I I I I I I I I I I I I I I I I
:l> r- KALTUKA T JAHA -
~ILLOliRA
Pi'PIJNYA
liAASTS DlUfT ............... GLEN HELEN
K]NG CANYON ~REYONGA
;:1 I . WRUNG
BARROW (REEK
~" AMMAROO
<I': DERRY WiNS
HARTS RP.NGE
.-oROSS RIVE? ALICE SPRINGS
SANTA TERESA
I AKF NASH
TOBERHOREY '" :z: <!:
-l
en :z: w w ::> o
CURTIN '---__ -'y,UlAHA orR INGS r---:";:",,,_-.¢ ERLDUNOA
LASS£il3l LOCALITY PLAN MUle" PARK
./
TENNANT CREEK
• MUD TANK ALICE SPRINGS
KULGERA NOT 10 SCALE
LOCATION MAP MUD TANK
FIGURE 1
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~oo'
I 134.020'
\
) ,
New Well
a 5 '-0 kms '~== __ == __ C= __ ~ __ ~'
MUD TANK - MINING WATER SUPPLY Locality Map
from Clutha Minerals Ltd, 1993 FIGURE 2
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, I
I I I I I I I
Scale 1 : 100 000
D Alluvium
" , ,
~ Other Quaternary deposits
Cainozoic Sandstone
E ~- c .1 Weathered rock
[=::J Heavitree Quartzite
LJ Schist
[I Carbonatlte "
C:=J Gneiss, Granulite
~ Gneiss, Amphibolite!
MUD TANK REGIONAL GEOLOGY
,,/
\ \ ,
)
(after Geology of the Strangways Range Region 100 000 Special, 1984)
FIGURE 3
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.fIore .IM'!~S O:~G 7i1'.o.O:S IN THE ZRC"JN 1«..1. • SPE0191 l1l.t JoOl:'EA /lOT $HOInI.
• mERE )lAS !fEN SOME RE_Au~en OF nil!. EXlSTltG "CC;;SS ':10 ... 0 SiNe! SURYl;YS FOA !KlS 11 .... "
0
!"5:GsNO -~ --~ -,-",="""" II1U1 '5j
" +
2 ,
Mi: fUOCOClC.
?ll>51'ORIU .. i_E(I,S~
3
approxImate scale
\ .e.u.a ..... n'f[
~IU'U~C
tx'~T'N<I ~ .. eK
1'VICli:l,JNIt
~~QI'Q~~!I 1.Cd:~5 1IC40
M~~lt.l~ 1.Un: ..... ~u:....II) ..
CAStO SOI'IES
lltJD 110M:!:
MUD TANK - MINING WATER SUPPLY Bore Location Map
from Clutha Minerals Ltd. 1993 FIGURE 4
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I I I I I Appendices I I I I I I I I I I I I I I I
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DEPTH BORE GR.APHIC (m) CONSTRUCTlON LOG
0 1 1- 3 ,4m f'---~
r f'--- , _ "-- 1'--/
0> L-c: Backfilled f'---L-~ 10 - en
0 I'--L-L u f'---L.. - en f'---L.. L
;::;E f'---L.. ~
Cl f'---L.. 20 - 0 I'-- - "-
L-
EO f'---~-'-
- EO 1'--/-"-
O'J ~
'--, "-N -"-
30 - . .
'--L-"-
L.. - '--~L
'-- -"-, "-,
40- L-
'--"--~ '--<-'--~L -~~~
50 - '--'":" L '--=L '--/-L
- EOH 55.7m /
60 -
-
70 -
-
-
-
WATER RESOURCES COMPOSITE LOG OF BORE
STRATA AQUIFERS DESCRIPTION (Water Struck)
Mrlift Yield EO Mr Hammer Drilled 200mm dio (Us) (uS/em)
Grey, micaceous HW GNEISS
Grey, clayey micaceous .. SWL 12.9 SW GNEISS 16/06/95
~ SEEP
As above, very clqyey HW
Pink, grey feldspathic GRANULITE I GNEISS
SW
Dark grey fresh micaceous GNEISS
~ < 0.1 8,150
DATE OF BORE COMPLETlON 14106/95
0
f-
f- 10
f-
f- 20
-
- 30
f-
f-40
f-
f-50
f-
f- 60
f-
f- 70
f-
f-
f-
IMUD TANK - Abandoned Dud RN 16675 APPENDIX A1
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I I I I I I I I I I I I I I I I I I I I
POWER~/;-'; ~\ ~NO - _ """
WATER \'~ .. AUTHORITY ~~
WATER RESOURCES COMPOSITt. LOG OF BORE
DEPTH BORE GRAPHIC STRATA DESCRIPTION
AQUIFERS (Water Struck) (m) CONSTRUCTION LOG
D
-~ 10 -
cr> c: en o '-'
-~ Cl
20 _ 0
E - Ji
30 -
-
40-
~
N
Cl' .S
- en o '-'
50 - (/) o
- E E
N 60 - l!)
~
o _ 0
E 70 - J3
co ~
-
-
-
II 304m
en c o
:;:; o 'o -..... '" a.. o
-0
E E
Ol
Airuft 'field EC fJJr Hammer Drilled 200mm dia
, Pink cream CALCRETE , I interbedded clay and quartz , breccia
Pink ochre clay-coated rounded sub-angular coarse SAND - fine GRAVEL. Clasts of gneissic quartz /clay with brown clay/silt coating Some grains polished. Porous
Orange - colourless sub-angular - angular fine SAND to rounded coarse GRAVEL grading down in to rounded, friable medium SANDSTONE. Grains coated with orange clay. Porous
k, above; sandy 8< micaceous Very porous
(LIs) (uSI em)
... SWl 45.3m
16/06/95
~ < 0.1 ~ 0.2 1340
~ 0.5 - light pink yellow, micaceous
quartz, feldspathic very silty EW GRANULITE. HW and white below 63m
Bedrock . "
-'-. '
b=:::l TD 66m """-'
EOH 66.6m
DATE OF BORE COMPLETION 16/06/95
o
~ 10
I-
I- 20
I- 30
I- 40
1-50
I-
I- 60
I- 70
~
MUD TANK - Production Bore RN 16676 APPENDIX A2
Technical Report WRD95036
Viewed at 20:02:23 on 17/02/2010 Page 24 of 28.
I I I I I I I I I I I I I I I I I I I I
WATER RESOURCES COMPOSITE LOG OF BORE
DEPTH BORE GRAPHIC (m) CON$TRUCT~N LOG
STRATA DESCRIPTION
AQUIFERS (Wqt'l'" ~~r\l<;k)
"'rlift Yield EC (Us) (uSI em) "'r Hemmer Drilled 200mm die
O~----n---,,----~~'---------------------------.-----------+ 0 ~ ! '::;;~O. Brown schisty rounded GRAVEL
-
10-
-
20 -
-
30 -
-
-
50 -
-
$0-
-
70 -
-
-
-
r-I - 3.2m ",.~ (Eluvium)
0> c:
'" o '-'
U1 ::::!: o o
C1' .S co o '-'
U1
o
o o
EO EO
co to ~
L-'"
'" L-",
"'''--'" '" L-",
"'L-
co I k-,,-, c:
.0 ~
o 'o ..... 'Q)
0..
EO EO
en
1----1 551]m
EOH 57.5m
White-grey-black calcareous gneissic SCHIST Quartz veining
As above; clayey HW
Grey, Qrange, cQ!oIJrles.s. qnglliqr fine sand to fine gravel BRECCIA of quartz/schist in a micaceous silty matrix. Some grains ore smooth textured.
As above; less clayey. Porous
DATE OF BORE COMPLETION 20/06/95
MUD TANK - Non-Potable Production Bore
I-
I- 10
... SWL 14.2m
21106/95 I-
fool SEEP I- 20
I-
~ 0.1 >10,000 F- 30
I-
I- 40
':j ~ 1.0 >10,000 I
~ ~ 1.0 >10,000
I- 50
I-
I- 60
I-
1-70
I-
I-
I-
RN 16677 APPENDIX AS
Technical Report WRD95036
Viewed at 20:02:23 on 17/02/2010 Page 25 of 28.
I I I I I I I I I I I I I I I I I I I I
WATER RESOURCES COMPOSITE LOG OF BORE
DEPTH SORE GRAPHIC STAAT A (m) CONSTRUCTION LOG DESCRIPTION
AQUIFERS (Water Struck)
Airlift Yield EC /lir Hommer Drilled 200mm die (LIs) (uSI em)
O~----~-.-----r..~ .. ~.~.-------------------------.--------~ 0
- I 0> C
-6.5m
10 - ~ Backfilled ()
_ U1 :::;:
Cl 20 _ 0
E _ E 0) ~
N
30 -
-
+0 - EOH +Om
-
50 -
-
60-
-
70 -
-
-
-
......... .. . .. .. ........ ....... . .. .. .. ......... .. .. .. .. .. Brown fine-coarse SAND
="-~ Greenish white orange grey _<-L HW-EW GNEISS "-"---
=<= -:-L Grey HW GNEISS _ L
=~~ -"-"-.
L...
L...L As above, SW
-~ ":- HW GNEISS I GRANULITE _";-L As above, SW
=";-~ Grey, fresh garnet-rich GNEISS
DATE OF SORE COMPLETION 20/06/95
!MUD TANK - Abandoned Dud
I-
Dry I- 10
1-
I- 20
f- 30
I- 40
f-50
I- 60
I-
1-70
1-
I-
I-
RN 16678 APPENDIX A4
Technical R
eport WR
D95036
View
ed at 20:02:23 on 17/02/2010P
age 26 of 28.
--------------------
> "U "U m z o >< OJ
~
E ~
8 ~
(j)
z ~ CI
~ a: CI
Limit of available drawdown (pump set at 54m bgl)
10 1
\ ~
, (
V ----j ,- - V I- -
7 ~ -
V ! ,
T - - i , /
/ -
V ..
V /
10° / 0.1 0.25
SWL = 45.3m bgl on 16/6/95
- -
- --
,
._-- -- - - - - I-j
--
. --0.5 1.0 2.5 5.0 10 1
DISCHARGE (LIs)
LOG GRAPH OF MAXIMUM 100 MINUTES'
DRAWDOWN (S100) VERSUS DISCHARGE (LIs)
RN 16676 APPENDIX B
Technical Report WRD95036
Viewed at 20:02:23 on 17/02/2010 Page 27 of 28.
I I I I I I I I I I I I I I I I I I I I
WATER RESOURCES DIVISION
TEST REPORT - BORE RN 16676
Eor .. Loc"t;ion: Mud Tank
Client: Australian Vermiculi te Industries Ltd
zntended Use: Mining & Mining Camp (Domestic) Water Supply
Map: Laughlen 1:100000 (Alice Springs)
Grid R.ferencQ, 426762E 2455388N *********************-*********************************************************** RECOIllMENIlA'l'J:ONS
PtmIpiIlg Rate, 0.5 L/s Pump Setting: 54 m below Gro~~d Level.
General recommendations are given on the reverse side. sust.ain higher pumping rates with deeper pump settings Further advice can be obtained from:
The aqtlifer and bore or for short periods.
Water Resources Branch, Nth Stuart Highway, ALICE SPRINGS, NT., 0870
(In all correspondence please refer to bore's RN n~~er) ********************************************************************************* COI>mLE'l'J:ON IlE'l'AILS
FL~ished depth: 66.6 m Completion Date: 16.06.95 Standing Water Level: 45.3 m on 16.06.95
BORE CONSTRUC'l'J:ON
:tnt .. :z:val (m)
0.0-3 0.0-53.9 53.9-60.2 60.2-66.6
WARNJ:NG: Min;,",,,,, iIltw:nal bora diameter
'l'ES'l'mG DE'l'AJ:LS
Test Date! 17.06.95 Test Rates: 0.2;0.4;0.6;0.8 Lis Test Duration: 1*300 + 1*200 mins.
Description
209 rom ID bl~Jc steel cas~ng 154 rom ID blank steel cas~ng 154 rom slotted steel casing 154 rom ID blar.k steel casing
is 154 mm
Notes: 1. Top of casing as constructed ~Jas above ground level. 2. All depths are measured from natural ground level. 3. Test rates are not necessarily indicative of sustainable long term
pumping rates.
*********************************************************************************
COMMEN'l'S
The above recommendations are based on short-duration test pumping at different rates for only 500 mins total test tLue. It assumes that hydrogeological conditions remain constant.
Provision to monitor abstraction rates l monitor ·aater levels & obtain water s~~les should be incorporated when equipping this bore. A log book should be kept on-site to note this data. It is recommended that ch~~cal ~~d bacteriological samples are forwarded to the Laboratory, WRB! Alice Springs for w~alysis.
Total depth & SWL should be recorded each tL~e the pump is remopved from the bore & results forwarded to ~ffiBl Alice Springs.
*********************************************************************************
WATER QtnU.:t'l'Y
Refer to analysis No. 95/96/0048
Prepared by: E.R. ROOKE APPENDIX C
boredata
Technical Report WRD95036
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RECOMMENDM.':tONS FOR F:tN:tSR:tNG, OPEaA~:tNG AND PRO'l1E~:tNG GROmmwA'l'ER BORES
Attention the follovnng points will ensure a long and safe life for the bore supply ~~d help prev~~t pollution of the groundwater resource.
1.
2.
3.
4.
s.
6.
Construct a concrete apron arotUld the bore head to prevent surface flow, seepage and waste from entering the bore.
Seal the space between the casing and pump equiprne.~t to prevent entry of veImini dirt and pollutants.
Maintain pumping equipment in good order to prevent pollution. spillage of fuel and oil on the ground around the bore. fertiliser and other chemicals at least SO m away.
Prevent Store
Keep stock away from the bore head. Discourage domestic activity at the bore. ~ne first tap on the pipeline should not be less than 5 m from the bore head.
Pumping the bore a higher than recommended rates may fork the bore leading to instability or pump maintenance problems. Seek the professional advice of an hydrogeologist or groundwater engineer.
If the bore is no longer required, the casing is to be ra."11oved O~ securely capped and the bore backfilled with clayey material. A cement plug may be required in some instances.
IN ADDITION, please ensure that the BORE IDENTIFIC-l\.TION TAG is retained securely at all times. The registered bore number is Water Resources Division-'s only reference to the scientific and engineering data on this bore, and hence important to :;'-1RD' s further advice to bore owners.
BORE LOCATION MlIP
boredata
I I I I I I I I I I I I I I I I I I I I
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