Stichting Steunfonds Kyoga
Depth (m
bgl)
Design
Yield
(l/hr)
WSL (m
bgl)
Aquifer
type
Borehole completion report for 2 boreholes
at Wiggins primary school, Kumi town
council, Kumi district
Details /
Rem arks
Sanitary seal
5'' plain casings
Back fill material
13.69 End of 10" hole
18.70 End of 6½'' hole
20.67 End of 6'' hole
Cement grout
F
24.00
746
F
24.75
246
Yield
Main w ater
strike:
1,000
24 m
40.71 End of 4½'' hole
BOREHOLE COMPLETION REPORT
November
2013
TGS 201328
Borehole Drilling and Water Supplies
Osman Road, plot 12, Lira Municipality- Chwa II road, plot 40, Mbuya
 P.O.Box 37461, Kampala-Uganda
 0772-222049/10, 0312-265130
E-mail:uganda@tgswater.info
Stichting Steunfonds Kyoga
Borehole completion report for 2 boreholes
at Wiggins primary school, Kumi town
council, Kumi district
Prepared by:
OMO
Quality Control:
VBA
BOREHOLE COMPLETION REPORT
November 2013
TGS 201328
Borehole Drilling and Water Supplies
Osman Road, plot 12, Lira Municipality- Chwa II road, plot 40 Mbuya
 P.O.Box 37461, Kampala-Uganda
 0772-222049/10, 0312-265130
E-mail: uganda@tgswater.info
TABLE OF CONTENTS
TABLE OF CONTENTS ..................................................................................... III
LIST OF ACRIMONY ........................................................................................ II
1
INTRODUCTION ............................................................................................1
2
STAFF AND EQUIPMENT DEPLOYED .................................................................1
2.1 Staff Drilling Contractor............................................................................1
2.2 Equipment and Drilling methods used ........................................................2
3
LOGISTICS AND COMMUNICATION .................................................................2
4
RESULTS OF THE DRILLING PROGRAMME ........................................................2
4.1 Drilling ...................................................................................................2
4.2 Test Pumping Results ...............................................................................3
4.3 Water Quality Analysis Reports .................................................................3
4.4 Platform Construction ..............................................................................4
4.5 Hand pump Installation ............................................................................4
5
CONCLUSION AND RECOMMENDATIONS ..........................................................4
5.1 General Conclusion and discussions ...........................................................4
5.2 Recommendations ...................................................................................5
List of Annexes
Annex 1 Results of the drilling programme................................................................ 6
Annex 2 Test pumping results ................................................................................. 7
Annex 3 Water quality analysis results ..................................................................... 8
Annex 4 Hand pump installation certificates .............................................................. 9
List of Tables
Table 1 Location of boreholes in Wiggins Primary School Boundaries ............................ 1
Table 2 Staff deployed ........................................................................................... 2
Table 3 Summary of drilling results .......................................................................... 3
Table 4 Summary of test pumping results ................................................................. 3
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
LIST OF ACRIMONY
Acronym
Psi
Description
Inches
Drilled depth
Depth to Bedrock
Down the hole
Directorate of Water Development of Ministry of Water and Environment
Dynamic Water Level
Depth to Weathered Rock
Liters per hour
meters
Meters below ground level
Main Water Strike Levels
Promotion of Appropriate Technology
Pump installation depth
Primary School
Pounds per square inch
Qair
Air lift yield or Drillers yield estimate at end of drilling
Qtest
SWL
Tested yield during well test
Static Water Level
TGS
The Good Shepherd
"
DD
DTB
DTH
DWD
DWL
DWR
l/hr
M
M bgl
MWS
PAT
PIP
PS
UTM X,Y
WSL1,2,3
SSK
Universal Transverse Mercator for X axis and Y axis
Water Strike Levels 1, 2, 3, etc
Stichting Steunfonds Kyoga
Borehole Completion report, SSK in Kumi district, Uganda
ii
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
1 Introduction
TGS Water Ltd was commissioned by Stiching Steunfonds Kyoga (SSK), a NonGovernmental Organisation (NGO) to carry out drilling, test pumping and casting of
platforms for a maximum of two (02) boreholes at Wiggins primary school, Kumi town
council, Kumi District. The geophysical borehole site investigations were done by WE
Consult and the results were presented in a WE Consult report 201328. Siting was done
at various points in the school; in the end, two points were successfully drilled and
installed with hand pumps and are serving the school. The contractual arrangement was
such that if the first drilling attempt yielded more than 1,000 litres per hour, then only
one borehole would be drilled. However, if the first drilling attempt yielded less than
1,000 litres per hour, a second borehole would be drilled. The first drilling attempt
yielded 400 litres per hour, prompting the contractor to drill a 2 nd attempt which
fortunately yielded just the minimum of 1,000 litres per hour. This in the end translated
to the client having 2 boreholes, as it was later agreed that that both wells be installed
with hand pumps.
The contractor carried out the drilling, design installation and well development between
11th and 23rd October 2013. Test pumping and platform casting was done on two
separate occasions for the two boreholes; long duration test pump of 4 steps and 12
hour constant test on the 2nd borehole DWD 41415 was done between 23rd and 24th
October 2013, while short constant rate test on the 1st borehole DWD 47551 was done on
31st October 2013. On discussion with the client, both wells were considered for
installation of a hand pump. Although both wells did not post excellent yields, they all
have water able to sustain a hand pump. Moreover, in this area, available data did not
indicate high chances of achieving better higher yielding boreholes.
Table 1 Location of boreholes in Wiggins Primary School Boundaries
DWD
S.N No.
UTMx
UTMy
Source name
Drill Date
start
Drill date
end
DD
Qair
(l/hr)
1 47551 603608 164246 Wiggins P/S-01 10/11/2013 10/15/2013 51.68
DTBR
(m)
DTWR MWS WSL1 WSL2
(m)
(mbgl) (mbgl) (mbgl)
220
16.61 10.99
18
11
18
2 41415 603528 164161 Wiggins P/S-02 10/16/2013 10/21/2013 40.71 1,000
14.71 12.31
24
24
25
610 15.66 11.65
21
17
21
Avarage of Parameters
46.2
S/N: Serial Number, DWD No.: Directorate of Water Dev elopment Number f or deep wells, UTM X, Y: Univ ersal Transv erse Marcator f or X axis and Y axis, DD: Drilled
Depth, Qair: Air lif t y ield, DTBR: Depth To Bed Rock, DTWR: Depth To Weathered Rock, m: Meters, MWS-Main Water Strike lev el, WSL1,2,3 -Water Strike Lev el 1,2,3
2 Staff and Equipment Deployed
2.1
Staff Drilling Contractor
TGS Water Ltd deployed Mr Byarugaba Vincent Akiiki, as the technical manager of the
project. Vincent was assisted by Mr. Opuru Moses to manage day to day operations of
the project.
The logistics of the field drilling crew were handled by Mr Okuma David. Well logging was
done by Mr Shaban Onweng, while the rig was operated by Mr Okello Moses, assisted by
Mr Okwil Tony. Test pumping, platform construction and hand pump installation were
carried out under supervision of Mr. Okuma David assisted by Mr. Obua Boniface and
Anyii Elvis as indicated in Table 2.
Borehole Completion report, SSK in Kumi district, Uganda
1
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
Table 2 Staff deployed
Name
Position
Task Assignment
General & Technical
Manager
Coordinate all the operations and providing
technical support to the field teams,
quality assurance and final reporting.
Opuru Ojulo Moses
Operations Manager
Coordinate with team leaders, logistics and
drafting final report.
Okuma David
Field logistics
manager
Writing borehole logs and keeping daily
records, logistics, & representing
contractor on site
Onweng Shaban
Field well logging
Writing well logs in the field
Okello Moses
Driller
Responsible for machine operation
Okwir Tony
Ass Driller
Assists in machine operation/drilling
Obua Boniface
Test pumping,
casting and
installation crew
Assisting in Test pumping, casting and
Installation
Anyii Elvis
Test pumping,
casting and
installation crew
Assisting in Test pumping, casting
Byarugaba
Akiiki
Vincent
2.2 Equipment and Drilling methods used
TGS Water Ltd deployed PAT 401 drilling rig with a mast of 3 m long to drill the 2
boreholes.
Air and mud rotary drilling methods were used to drill the boreholes with the help of an
ELGI 450cfm, 150 Psi capacity compressor and the mud pump. The same compressor
was used to carry out well development. The rig was equipped with drag bits, DTH
hammers, and button bits of different sizes. The drill rods used were 3” in diameter and
average lengths of 2m. Drilling in the overburden was achieved using a 10” and an 8”
drag bit. Drilling was accomplished by use of either 6.5” button bit reamer or 4.5” drill bit
in the hard rock. In highly collapsing overburden formation, the mud rotary drilling
method was adapted using a mud pump mounted on the PAT drilling rig, while in other
cases, temporary casings were used to enable clean drilling below the collapsing
formation.
3 Logistics and Communication
The drilling team lodged in Kumi town council, which is very near to the site. This
ensured that work commenced very early. Contact between the field and office was
through mobile telephones using the MTN, UTL, WARID and Airtel networks, whereas
contact between the contractor and the client was through e-mails and phone calls.
4 Results of the drilling programme
4.1 Drilling
The drilling team mobilized the drilling equipment and materials on 10th October 2013
and drilling commenced the next day and ended on 23rd October 2013. Table 3 presents
the summary of the drilling program.
Borehole Completion report, SSK in Kumi district, Uganda
2
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
Table 3 Summary of drilling results
DWD
S.N No.
UTMx
UTMy
Source name
Drill Date
start
Drill date
end
DD
1 47551 603608 164246 Wiggins P/S-01 10/11/2013 10/15/2013 51.68
Qair
(l/hr)
DTBR
(m)
DTWR MWS WSL1 WSL2
(m)
(mbgl) (mbgl) (mbgl)
220
16.61 10.99
2 41415 603528 164161 Wiggins P/S-02 10/16/2013 10/21/2013 40.71 1,000
14.71 12.31
24
24
25
610 15.66 11.65
21
17
21
46.2
Avarage of Parameters
18
11
18
S/N: Serial Number, DWD No.: Directorate of Water Dev elopment Number f or deep wells, UTM X, Y: Univ ersal Transv erse Marcator f or X axis and Y axis, DD: Drilled
Depth, Qair: Air lif t y ield, DTBR: Depth To Bed Rock, DTWR: Depth To Weathered Rock, m: Meters, MWS-Main Water Strike lev el, WSL1,2,3 -Water Strike Lev el 1,2,3
From table 3, the average drilled depth is 46.2 m bgl while the average drillers’ yield is
610 l/hr. The average depth to bedrock is 15.66 m bgl and the average depth to
weathered rock is 11.65 m. The average main water strike for the 2 boreholes is 20.81
m. Wiggins P/S-01(DWD 47551) borehole was low yielding, with an airlift yield of 220
l/hr, after well development the yield enormously increased to even sustain test pumping
yield of 500 l/hr. Wiggins P/S-02 (DWD 41415) borehole had a higher yield of 1,000 l/hr.
4.2 Test Pumping Results
For this particular project, the main objective of test pumping was to determine the safe
yield and optimum installation depth of the pump (hand pump or motorized pump).
Four to five step tests (4 hours for 4 steps and 16 minutes for the 5th step) followed by
recovery monitoring before a 12 hour constant rate test were carried for Wiggins P/S-02
borehole, while Wiggins P/S-01 was test pumped for a short constant rate test of 3
hours. Both tests were followed by recovery monitoring till a minimum of 90% of the
created drawdown was recovered. At the end of test-pumping, a water sample was
collected and taken to the laboratory of National Water and Sewerage Corporation
(NWSC), Bugolobi, Kampala, for Physical-chemical quality analysis. The data collected
from test pumping has been analysed and is presented in Annex 2, while a summary is
presented in Table 4.
Table 4 Summary of test pumping results
SN DWD No. UTMx UTMy
Source name
Tet pump
date
1 47551 603608 164246 Wiggins P/S-01 31/10/2013
2 41415 603528 164161 Wiggins P/S-02 23/10/2013
Avarage recorded parameters
Constant SWL (m DWL (m
%age
Recovery
pumping bmp)
bmp) Recovery
Time
time (hrs)
(minutes)
3
12
7.5
6.40
6.48
6.44
37.00
33.25
35.13
82%
93%
88%
70
60
65
S/N: Serial Number, DWD No.: Directorate of Water Dev elopment Identif ication number, l/hr: Litre per hour, Q test: Y ield during testpumping, SWL: Static
Water Lev el, DWL: Dy namic Water Lev el, hrs: Hours, m bmp: meters below measuring point.
The average static water level (SWL) is 6.44 m bmp, while the average dynamic water
level (DWL) of combined 16 hours and 3 hours of pumping was 35.13 m bgl. The
recovery of the low yielding well is lower than the other borehole
The analysed results of test pumping are given in details in Annex 2.
4.3 Water Quality Analysis Reports
One of the main objectives of any water supply project is to provide the community with
water of a good quality, which should be colourless, odourless and pleasant to taste. At
the end of the test-pumping, a water sample was collected by the contractor for analysis
of physio-chemical parameters for the water of each of the 2 boreholes. Water quality
analysis was done at National Water and Sewerage Corporation, Bugolobi, Kampala. The
results of the water quality analysis are presented in Annex 3
Borehole Completion report, SSK in Kumi district, Uganda
3
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
From the analysed samples, it’s indicative that all the samples showed satisfactory
physio-chemical characteristics, although apparent colour and total suspended solids
were slightly higher than national permissible standards for potable water. These two
parameters are however not disease causing but may have some impact on source
acceptability. The contractor suspects that, the apparent colour are a characteristic of the
water bearing rocks in the area rather than a construction problem as all efforts were
made to ensure proper well construction was achieved. According to the water quality
analysis certificates, the water is fit for both domestic and livestock usage.
4.4
Platform Construction
After successfully drilling and test pumping the boreholes, a concrete platform was cast
with a platform ring of 1.6m diameter and a drainage channel of 6m long. Platform
construction of the 1st borehole DWD 47551 was done later on 31st October 2013, due to
a delayed decision making from the client on whether this borehole would be installed or
be left as a monitoring borehole as had been suggested by the contractor since it was a
low yielding borehole. Table 4 presents a summary of a schedule for platform
construction.
Table 4 Summary of Casting and installation results
SN DWD No. UTMx UTMy Source name Cast date Install date PID
1
47551 603608 164246 Wiggins P/S-01 10/31/2013 11/1/2013 42
2
41415 603528 164161 Wiggins P/S-02 10/24/2013 10/25/2013 24
Avarage recorded parameters
33
S/N: Serial Number, l/hr: Litre per hour, Q test: Y ield during testpumping, PID-Pump Installation Depth
4.5 Hand pump Installation
The boreholes were installed at a minimum depth of 24 m for Wiggins P/S-02 and a
maximum depth of 42 m bgl for Wiggins P/S-01. Averagely the hand pump installation
depth was 33 m.
Both boreholes were installed with UII Indian Mark hand pumps of AJAY MAKE. The client
plans to monitor the working of the wells as fundraising for a solar pumped system is
done, based on Wiggins P/S-02 borehole.
5 Conclusion and Recommendations
5.1
General Conclusion and discussions
The project had technical and project success rates of 100 %. TGS Water ltd defines a
100% project success as one where the whole target of the client has been achieved,
irrespective of how many drilling attempts or how much it cost the client. We also
consider a 100% technical success rate for a project when all the drilling attempts made
have a yield acceptable for a hand pump. In Uganda, 500 litres per hour is the national
acceptable minimum yield for a borehole to be installed with a hand pump. However,
there are even individual districts that have lowered this threshold to 300 litres per hour
due to an extreme low ground water potential in such specific areas within districts. In
this particular project, all the two boreholes drilled have a sustainable yield equal to or
above 500 litres per hour, translating to a technical & project success rate of 100%.
Water Quality analyses’ results for the two successful villages indicate that, although the
apparent colour and total suspended solids are slightly higher than the maximum
Borehole Completion report, SSK in Kumi district, Uganda
4
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
permissible limits for potable water in Uganda, in general, the water was fit for domestic
and livestock consumption.
5.2
1.
2.
3.
Recommendations
Based on analysis of test pumping data, it was recommended to install the hand
pump in Borehole 1 at 42 and borehole 2 at 24 m below ground level respectively.
In future, an electric pump of 1,000 liters per hour operating at a maximum of 10
hours a day can be installed at 30m below ground level in DWD 41415.
TGS to re-sample and re-analyse the water quality.
Borehole Completion report, SSK in Kumi district, Uganda
5
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
Annex 1 Results of the drilling programme
Borehole Completion report, SSK in Kumi district, Uganda
6
Borehole completion data
Drilling Unit
15/10/2013
Geology
Details / Remarks
Sanitary seal
laterites
laterites
Clay & sand
Clay & sand
Back fill material
Clay & sand
weathered rock
F
10.99
50
cement grout
weathered rock
Gravel
weathered rock
5" plain casings
Granite
F
17.61
200
5'' screen
Granite
18.46m
End of 8'' hole
Granite
20.67m
End of 6'' hole
Qty est.
Qty. act.
Granite
Granite
Granite
Granite
F
50.70
50
Granite
Granite
Granite
Granite
Granite
Granite
Granite
Granite
Granite
Granite
Granite
220
17.6
Materials used
Approximate penetration rate (per drill pipe)
Rate (min/m)
m amsl
UTM Grid
36N
VES
top soils
Total airlift yield:
Main water strike:
material
cement
gravel pack
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0
1162
164246
603608
Depth (m bgl)
Penetration
time (min)
3
2
1
2
2
6
42
27
50
24
14
27
29
34
34
29
32
34
31
18
25
45
31
27
29
31
19
Altitude
GPS E
GPS N
401
Design
Depth (m bgl)
1.81
3.81
4.31
6.31
8.31
10.31
10.99
12.31
14.31
16.71
18.71
20.71
22.71
24.71
26.71
28.71
30.71
32.71
34.71
36.71
38.71
40.71
42.71
44.71
46.71
48.71
51.68
Company reference number:
Kumi
Kumi Town Council
Tank Ward
District
Sub-County
Parish
Date completed
Yield (l/hr)
Drill pipe
1
2
2
3
4
5
6
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26
Wiggins PS
47551
51.68
0.22
10.99
11/10/2013
WSL (m bgl)
DWD
Aquifer type
DWD ref. no.
Final Depth (m)
Airlift yield (m3/hr)
SWL (m bgl)
Date started
201328
Drilling Contract No.:
5
10
15
20
25
30
35
40
45
50
Depth (m bgl)
55
gravel pack
backfill
screen
screen total length
screen
casing
casing total length
casing
bottom plugs
seal material
development
unit
50 kg bags
100 kg bags
liters
liters
lengths (nrs)
meters
broken pieces
lengths (nrs)
meters
broken pieces
material
Cement
hours
remarks
1.00
28.00
28.00
360.00
318.00
1,400.00
318
1.0
2.95
7.0
19.18
Cement
0.0416667
INSTALLATION DATA
Drilling
Depth
0.00
BHD
Drilling method
14.52
254
Mud drilling
14.52
18.46
203.2
Air rotary
18.46
20.67
152.4
Air rotary
20.67
51.68
114.3
Air rotary
Equipment
ID
Depth
Diameter and type
OD
0.00
16.36
127
139.7
5'' PVC Plain casings
16.36
19.1
127
139.7
5'' PVC Ribbed Screening
19.10
20.67
127
139.7
5'' PVC Plain casing
Annular space
Volume (l)
Depth
GENERAL REMARKS:
The borehole was drilled to a depth of 51.68m. An open hole design was
adopted with 5" ID Pvc casings and screens sitting at 20.67 m below ground
level in the 10 5/8", 8" and 6" hole at 14.52 m, 18.46 m and 20.65m
respectively. The airlift yield was 220 l/hr at the end of development.
Test pumping was done and the borehole was able to stand pumping at 500
l/hr for 3 hours with a draw down of 30m. Platform construction, and
installation of an India Mark II hand pump was completed, and the school
community is currently using the borehole.
Fill type
0.00
2.00
34
backfill
DRILLING COMPANY
2.00
3.00
17
cement
DRILLER
3.00
11.00
119
backfill
CONSULTANT
11.00
12.00
17
cement
12.00
20.67
153
gravel
TGS Water Ltd
Okello Moses
We Consult
SUPERVISOR
BHD, ID, OD, size are diameters in mm, depths in meters
DWD 47551 Wiggins PS Att 1 Success _001VB
Byarugaba Vincent Akiiki
Borehole completion data
Drilling Unit
21/10/2013
Geology
m amsl
UTM Grid
36N
VES
top soils
Details / Remarks
Sanitary seal
laterites
Clay
5'' plain casings
Clay
course sand
Back fill material
weathered rock
weathered rock
13.69 End of 10" hole
Granite
18.70 End of 6½'' hole
Granite
Granite
Granite
20.67 End of 6'' hole
Granite
Cement grout
Granite
F
24.00
746
Granite
F
24.75
246
Granite
Granite
Granite
Granite
Granite
Granite
40.71 End of 4½'' hole
Granite
Yield
Main water strike:
1,000
24.0
Materials used
Approximate penetration rate (per drill pipe)
Rate (min/m)
1156
164161
603528
Depth (m bgl)
Penetration
time (min)
3
3
5
4
4
7
30
17
19
21
20
26
26
29
31
63
50
40
48
73
52
Altitude
GPS E
GPS N
401 OLD
Design
Depth (m bgl)
2.31
4.31
6.31
8.31
10.31
12.31
13.69
14.71
16.71
18.71
20.71
22.71
24.71
26.71
28.71
30.71
32.71
34.71
36.71
38.71
40.71
Kumi
Kumi Town Council
Tank Ward
District
Sub-County
Parish
16/10/2013 Date completed
Aquifer type
Drill pipe
1
2
3
4
5
6
7
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Wiggins PS
41415
40.71
1.00
Yield (l/hr)
DWD
Final Depth (m)
Airlift yield (m3/hr)
SWL (m bgl)
Date started
201327
Drilling Contract No.:
Company reference number:
WSL (m bgl)
DWD ref. no.
material
cement
gravel pack
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
0
5
10
15
20
25
Depth (m bgl)
30
35
40
45
gravel pack
backfill
screen
screen total length
screen
casing
casing total length
casing
bottom plugs
seal material
development
unit
50 kg bags
100 kg bags
liters
liters
lengths (nrs)
meters
broken pieces
lengths (nrs)
meters
broken pieces
material
Cement
hours
Qty est.
Qty. act.
remarks
1.00
28.00
360.00
318.00
908
1.0
2.73
7.0
19.18
Cement
0.0833333
INSTALLATION DATA
Drilling
Depth
BHD
Drilling method
13.69
254
Mud drilling
13.69
18.7
165.1
Mud drilling
18.7
20.67
152.4
Air rotary
20.67
40.71
114.3
Air rotary
0.00
Equipment
Depth
0.00
20.67
ID
OD
Diameter and type
127
139.7
5'' PVC Plain casings
GENERAL REMARKS:
The borehole was drilled to a depth of 40.71 m. An open hole design was
adopted with 5" ID Pvc casings and screens sitting at 20.67 m below ground
level in the 10" , 6½" and eventually 6" hole at respective depths below
ground level of 13.69 m , 18.7 m and 20.67 m. The airlift yield was 1,000
l/hr at the end of development.
A step test & a long duration test was done, platform construction, and
installation of an India Mark II hand pump was completed successfull. The
school community is currently using the borehole.
In future, an electric pump powered by solar energy might be installed to
replace the hand pump if funds become available. The water would be
pumped to a raised tank, from where it would flow by gravity to feed various
water collection points like tapstands.
Annular space
Volume (l)
Depth
Fill type
0.00
2.00
34
Backfill
DRILLING COMPANY
2.00
3.00
17
Cement
DRILLER
3.00
18.30
908
Backfill
CONSULTANT
18.30
19.30
17
Cement
TGS Water Ltd
Okello Moses
We Consult
SUPERVISOR
BHD, ID, OD, size are diameters in mm, depths in meters
DWD 41415 Wiggins PS Att 2 Success_002VB
Byarugaba Vincent A
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
Annex 2 Test pumping results
Borehole Completion report, SSK in Kumi district, Uganda
7
Page 1of 1
Wiggins PS
Pumping test data
Borehole No.
Company ref no.
Final Depth (m)
Date:
Time Started
Tested yield
Water sample
S.W.L at start test
WSL1
WSL2
WSL3
WSL4
WSL5
Measured by :
Company :
Contract :
DRAWDOWN
Water Level
(m bgl)
5.48
7.14
7.55
7.95
8.32
8.68
8.94
9.21
9.47
9.72
9.95
10.34
10.70
10.99
11.20
11.35
12.70
13.47
14.59
15.50
16.24
16.73
17.25
17.50
18.19
19.70
21.79
23.71
26.20
28.69
32.40
36.60
Time, t
(mins)
0
1
2
3
4
5
6
7
8
9
10
12
14
16
18
20
25
30
35
40
45
50
55
60
70
80
90
100
120
140
160
180
DWD
47551
31/10/2013
9:40am
0.50
yes
6.00
10.99
17.61
50.70
51.68
Altitude
GPS east
GPS north
m3/hr
yes/no
m bgl
m bgl
m bgl
m bgl
m bgl
m bgl
Drillers yield
Time Finished
Duration test
Duration recovery
DWL end of test
Drawdown
Recovery
Main water strike
Depth of pump
Measuring Point
OBUA BONIFACE
TGS Water Ltd
201328
Drawdown
(m)
0.52
1.14
1.55
1.95
2.32
2.68
2.94
3.21
3.47
3.72
3.95
4.34
4.70
4.99
5.20
5.35
6.70
7.47
8.59
9.50
10.24
10.73
11.25
11.50
12.19
13.70
15.79
17.71
20.20
22.69
26.40
30.60
Drilling Contract No.
Supervisor:
Client :
Contract :
Discharge, Q
(l/h)
486
450
428
428
500
1162
164246
603608
m amsl
0.22
12;40PM
180.00
60.00
36.60
30.60
82
17.61
45.00
0.40
m3/hr
201328
min
min
m bgl
m
%
m bgl
m bgl
m agl
OBUA BONIFACE
SSK
201328
Time, t
(min)
0
1
2
3
4
5
6
7
8
9
10
12
14
16
18
20
25
30
35
40
45
50
55
60
70
80
Time
(min)
180
181
182
183
184
185
186
187
188
189
190
192
194
196
198
200
205
210
215
220
225
230
235
240
250
260
RECOVERY
Water Level
(m)
36.60
36.30
35.90
35.30
34.60
34.00
33.30
31.61
32.13
31.40
30.90
29.70
28.45
27.23
25.95
24.80
21.88
19.55
17.60
16.73
15.15
13.83
12.58
11.53
11.15
Residual
Drawdown (m)
30.60
30.30
29.90
29.30
28.60
28.00
27.30
25.61
26.13
25.40
24.90
23.70
22.45
21.23
19.95
18.80
15.88
13.55
11.60
10.73
9.15
7.83
6.58
5.53
5.15
500
500
500
Water Level Vs Time
0.00
Water level (m bgl)
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
1
10
100
1000
Time (mins)
Recommended pump installation depth
42
m bgl
Comments : The borehole indicated a drawdown of 30.6 m when pumping at at 500 l/hr for three hours. The last dynamic water level was
36.6 m below measuring point. The recovery was 82 % in 60 minutes. Based on this data, we recommend to install the India Mark II hand pump at 42
mbgl.
TGS Water Ltd
DWD 47551 Wiggins PS Att 1 Success _001VB: 12/3/2013
DWD 41415 WIGGINS PS TP ANALYSIS _ 001VB
DWD 41415 BH - Step Test
5.00
0.1
10.00
Water Level (bgl)
Specific Capacity (m3/h/m)
0.1
0.1
0.0
Yield
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
15.00
20.00
25.00
30.00
0.0
35.00
0.0
0.0
0.5
1.0
1.5
2.0
40.00
0
Yield (m3/hr)
100
200
DWD 41415 BH Specific Capacity
DWD 41415 BH- Specific Capacity
Recovery
300
400
Time (min)
1.20
0.30
1.00
0.25
0.80
0.20
12 hrs test : 1.3 m3/hr
0.60
85%
14.92 m
6.08 m bgl
24 m bgl
m bgl
1.2 m3/hr
0.08 m3/hr/m
11.7 m3/day
1.2 m3/hr
1.0 m3/hr
16.0 mbgl
BH depth
step 4: 1.5 m3/h
0.10
40.70
step 5: 1.8 m3/h
0.20
0.05
0.00
0.01
0.10
1.00
10.00
100.00
0.00
0.01
0.10
Time (hrs)
DWD 41415 BH
12 hr Constant Rate Test
drawdown
1.00
Time (hrs)
Q
DWD 41415 BH
Recovery Test
0.00
1.3
0.00
1.3
1.3
15.00
1.2
20.00
1.2
25.00
1.2
30.00
1
10
Yield (m3/hr)
10.00
Residual Drawdown (m)
1.3
5.00
Drawdown (m)
step 3 : 1.2 m3/hr
step 2 : 0.8 m3/hr
0.15
0.40
available drawdown
SWL
top screen 1
top screen 2
most efficient yield
specific capacity
daily yield (average 10 hrs)
maximum sustainable yield
pump rate at
Expected DWL Max
step 1 : 0.4 m3/hr
Q/s (m3/hr/m)
Water Level
0.00
Q/s (m3/hr/m)
DWD 41415 BH- Specific Capacity
0.1
5.00
10.00
15.00
20.00
25.00
10.0
100.0
1.2
1000
100
1000.0
t/t"
Time (min)
Remarks
Transmissivity calculated over :
1
2
3
4
5
capacity recommended solar pump
daily yield with average 10 hrs of pumping (85% of sustainable yield)
daily yield with 16 hrs of pumping
expected head to pump water to surface is
install bottom of pump at
1 m3/hr
10 m3/day
m3/day
16.26 m
30 m bgl
Transmissivity calculated over :
T = 0.183 * Q / s
Q=
Q=
t1 =
t2 =
t/t''(1) =
t/t''(2) =
best fit line
70
240
19
61
1.5 m3/h
15 m3/d
s=
s per log cycle
5.01
m
s=
Constant rate test
Recovery test
DWD: Directorate of Water Development (Ministry of Water and Environment) borehole Identification number, M: Meters, M bgl: Meters below ground level, M3/hr: Yield in cubic meters per hour, M3/day:Yield in cubic meters per day
DWL: Dynamic Water Level, SWL: Static Water Level, BH: Borehole, Q: Yield
11.35
m
T=
T=
1.3 m2/d
0.6 m2/d
10.00
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
Annex 3 Water Quality Analysis Certificates
Borehole Completion report, SSK in Kumi district, Uganda
8
TGS Water Ltd – Report: 201328 SSK-Wiggins P/s Kumi
Annex 4 Borehole installation Certificates
Borehole Completion report, SSK in Kumi district, Uganda
9