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PROVINCE OF BRITISH COLUMBIA MINISTRY OF ENVIRONMENT WATER MANAGEMENT BRANCH

CONTRACT NO. 75

D r i l l i n g , Construction and Test ing o f Observation Wells a t

Coombs and Hornby Is land, B.C.

Observation Well No . 's 287 and 288

M. Wei Geol ogical Engineer Groundwater Section

Water Management Branch

V i c t o r i a , B.C. February, 1985

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TABLE OF CONTENTS

Page

TABLE OF CONTENTS ................................................. i LIST OF FIGURES ....................................................... i LIST OF TABLES ...................................................... ii LIST OF PICTURES .................................................... ii LIST OF APPENDICES ................................................ ii

1. INTRODUCTION ...................................................... 1

2. WELL DRILLING ..................................................... 1 2.1 Observation Well No. 287 ................................... 2 2.2 Observation Well No. 288 ................................... 3

3. WATER CHEMISTRY ................................................... 4

4. DISCUSSION .................................................... 5

5. CONCLUSIONS AND RECOMMENDATIONS ................................... 6

6. .REFERENCES ........................................................ 6

7. APPENDICES . ...................................................... 27

LIST OF FIGURES

Figure 1

Figure 2

F igure 3

F igure 4

F igure 5

F igure 6

F igure 7

F igure 8

Location Map ............................................. 8

Location o f Observation Well No. 287, Coombs, B.C. ....... 9

S i t e Plan, Observation Well No. 287, Coombs, B.C. ........ 10

Geologic Descr ip t ion and Well Completion, Observation Well No. 287, Coombs, B.C. ................... 11

Location o f Observation Well No. 288, Hornby Island, B.C.. 12

S i t e Plan, Observation Well No. 288, Hornby Island, B.C... 13

Geologic Descr ip t ion and Well Completion, Observation Well No. 288, Hornby Island, B.C. ............ 14

General Water Chemistry Presented on Schoel ler Diagram ... 15

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Table 1

Table 2

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Page

LIST OF TABLES

Well D r i l l i n g Summary .................................... 16

Water Chemistry Summary .................................. 17

LIST OF PICTURES

P i c t u r e 1 ................................................ P i c t u r e 2 ................................................ P i c t u r e 3 ................................................ P i c t u r e 4 ................................................ P i c t u r e 5 ................................................ P i c t u r e 6 ................................................ P i c t u r e 7 ................................................ P i c t u r e 8 ................................................ P i c t u r e 9 ................................................ P i c t u r e 10 ............................................... P i c t u r e 11 ............................................... P i c t u r e 12 ............................................... P i c t u r e 13 ............................................... P i c t u r e 14 ............................................... P i c t u r e 15 ............................................... P i c t u r e 16 ............................................... P i c t u r e 17 ...............................................

18 19 19 20 20 2 1 2 1 22 22 23 23 24 24 25 25 26 26

LIST OF APPENDICES

Appendix A Well Logs F i l e s .......................................... 27

Appendix B Contract Costs ........................................... 30

Appendix C Water Chemistry Reports .................................. 32

Appendix D Water Level Recorder I n s t a l l a t i o n Spec i f ica t ions ......... 37

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D r i l l i n g , Cons t ruc t ion and Tes t ing o f Observation Wells a t

Coombs and Hornby I s l and , B. C. Observation We1 1 No. ' s 287 and 288

CONTRACT NO. 75

1. INTRODUCTION

Establ ishment of observa t ion wells a t Coombs and Hornby Is land was

recommended by Zubel (1982) and \lei (1983). Coombs and Hornby Is land l i e along t h e east coast of Vancouver I s l a n d between Courtenay and Nanaimo ( F i g u r e 1). Both a r e a s depend on groundwater as the m a i n source of water supply and have a high concen t r a t ion of wells. Many wells are open holes d r i l l e d i n t o bedrock intercepting water-bearing zones. Water quan t i ty and q u a l i t y a r e repor ted problems. Observation wells i n these a r e a s would al low c o l l e c t i o n of groundwater da t a f o r a s ses s ing a q u i f e r behaviour to loca l pumping, na tura l recharge and p o l l u t i o n over a period of time. A f i e l d survey by D. Kalyn, groundwater t echn ic i an , i n the winter of 1983 t o l o c a t e sui t a b l e abandoned we1 1 s f o r use a s observa t ion we1 1s was unsuccessful. Consequently, d r i l l i ng was required t o e s t a b l i s h these observa t ion we1 1 s.

2. WELL DRILLING

Well d r i l l i n g was c a r r i e d o u t by Island Well D r i l l i n g Ltd. of Ladysmith. In t o t a l , Wo observa t ion wells (152 mm 0) were established, one each a t Coombs and Hornby Is land (Appendix A ) .

The wells were dr i l led by the air r o t a r y method w i t h a Shram R o t a d r i l l r i g . Cont rac t c o s t t o t a l l e d $7,996.17 (Appendix B).

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7

0.0 m t o 3.0 m ( 10 ' ) 3.0 m t o 8.2 m ( 27 ' ) 8.2 m to 92.4 m (303')

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~ ~ -~

Brown till Grey sandy till So f t black shale

2.1 Observation Well No. 287

. Work began on March 5, 1984, a t Coombs along the Burgoyne Road r i g h t - of-way (F igures 2 and 3). An i n i t i a l hole, Testhole #1, was d r i l l e d i n

the wrong l o c a t i o n due to mis loca t ing a survey pin, t o a depth o f 8.8 m (29 f e e t ) and was subsequently b a c k f i l l e d and abandoned.

The r i g was moved 12.1 m (39.7 f e e t ) west o f Testhole #1 and a second

ho le was d r i l l e d f o r completion as an observat ion well (P i c tu re 1). Surface casing 254 mm (10 inches) i n diameter was f i r s t i n s t a l l e d to 8.8 m (29 fee t ) . Bedrock was encountered a t 8.2 m (27 fee t ) . A 152 mm (6-inch)

diameter overlap casing was placed ins ide the surface casing and d r i l l i n g

was then continued w i t h a 152 mm (6-inch) open hole to a depth o f 92.4 m (303 f e e t ) . Geologic samples co l l ec ted a t regu la r i n t e r v a l s showed

d r i 11 i ng encountered the fo l low ing :

1 Depth I Mater ia l I

Water was f i r s t d e t e c t e d ' a t about 24 m (80 f e e t ) f low ing i n t o the we l l a t a r a t e o f roughly 3(10-2) L/s (1/2 gpm). No other water-bearing zones were detected below t h i s depth. The s t a t i c water l e v e l upon

completion was 2.74 m (9.0 feet ) below the t o p of the 152 mm casing. A f t e r d r i l l i n g , the we l l was developed by f l ush ing w i t h a i r . A surface

seal was then constructed by f i l l i n g the annular space between the 254 mm and 152 mm casings w i t h cement and cut t ings, and p u l l i n g out the 254 mm

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Depth

0.0 m t o 0.8 m (2.5') 0.8 m t o 1.8 m ( 6 ' ) 1.8 m t o 48.8 m (160')

48.8 m t o 67.1 m (220')

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Materi a1

Topsoil Conglomerate Grey sandstone w i t h some

l i g h t grey sandstone Black shale

casing. A we l l l i d was attached t o the wel l head t o complete the we l l (F igure 4 and P ic tu res 2, 3, 4, 5, 6 and 7). A pump t e s t was not

performed because o f the low y i e l d .

2.2 Observation Well No. 288

Work on Hornby Is land began March 7, 1984, along the Central Road

r ight-of-way w i t h Testhole #1 a t S i t e #1 (Figure 5 and P i c t u r e 8 ) . This

152 mm diameter hole was d r i l l e d to 67.1 m (220 f e e t ) and encountered the fo l l ow ing geologic mater ia ls :

The hole was dry and subsequently b a c k f i l l e d and abandoned (Pic tures 9 and 10).

Another ho le (Observation Well No. 288) was d r i l l e d a t S i t e #2 275 m (900 f e e t ) south of Testhole #1 (Figures 5 and 6 and P i c t u r e 11). A 254 mm surface casing was i n s t a l l e d t o 6.1 m (20 f e e t ) . A 152 mm over lap

casing was then placed i n s i d e the surface hole and d r i l l i n g continued with a 152 mm open hole to 77.1 m (253 fee t ) . Geologic samples co l l ec ted

showed d r i 11 i ng encountered the f o l l owi ng:

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Depth

0.0 m to 3.0 m (10 ' ) 3.1 m t o 4.6 m (15 ' ) 4.6 m to 5.2 m (17 ' ) 5.2 m t o 16.8 m ( 5 5 ' )

16.8 m t o 38.1 m (125 ' ) 38.1 m to 39.6 m (130') 39.6 m t o 42.7 m (140') 42.7 m to 45.7 m (150') 45.7 m t o 51.8 m (170 ' ) 51.8 m to 62.5 m (205') 62.5 m t o 77.1 m (253')

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Mate r i a1

Conglomerate So f t b lack shale L i g h t grey sandstone Greenish grey sandstonel

conglomerate Black shale Grey sandstone Black shale L i g h t grey sandstone Black shale L i g h t grey sandstone B1 ack s i 1 ts tone gradi ng

down to black shale

( 17

Some water was f i r s t detected between 4.6 m (15 f e e t ) and 5.2 rn f e e t ) . No major water-bearing zones were encountered below that,

however, small quan t i t i es o f water were being cont r ibu ted to the wel l a t

depth. Upon completion the t o t a l y i e l d was estimated a t 6(10-3) L/s (5 gph) and the s t a t i c water l e v e l was 15.03 m (49.3 f e e t ) below the top o f the 152 mm casing. The we l l was developed by f l ush ing w i t h a i r . A surface seal was constructed by f i l l i n g the annular space between the

254 mm and 152 mm casings w i t h cement and cut t ings, and p u l l i n g out the

254 mm casing. A wel l l i d was attached to the wel l head to complete the

w e l l (F igure 7 and P ic tu res 12, 13, 14 and 15). A pump t e s t was not performed because o f the low y i e l d . A summary o f the wel l d r i l l i n g i s

presented i n Table 1.

3. WATER CHEMISTRY

Water chemistry was tested i n the f i e l d w i t h a conduc t i v i t y meter and

Hach K i t from a i r f lushed samples. Fol lowing d r i l l i n g bu t before recorder

i n s t a l l a t i o n , a sample was co l l ec ted from each we l l w i t h a tube sampler, and

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m

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sent to the Environmental Laboratory i n Vancouver f o r chemical analysis.

Chemistry resu1,ts are shown i n F igure 8, Table 2 and Appendix C.

Water q u a l i t y from both observation we l ls i s very s o f t and r e l a t i v e l y

h igh i n pH, d isso lved minera l i za t ion , f luor ide , boron and aluminum. PH, TDS and f luor ide exceed those l i m i t s se t i n B.C. Dr ink ing Q u a l i t y Standards,

1982. I n addi t ion, water from Observation Well No. 287 appears to conta in

excessively high amounts of i r o n (Fe diss. = 0.57 mg/L). The waters can be character ized as Na-HC03 type water w i th corroding tendency (moderately h igh

Ryznar Index) and no t idea l fo r i r r i g a t i o n (h igh SAR index).

4. DISCUSSION

The Coombs Observation Well No. 287 appears t o be completed i n t o shales o f the Haslam Formation. The Hornby Is land Observation Well No. 288 appears t o be completed i n t o conglomerates, sandstones and shales o f the Geoffrey

Formation. Both formations belong to the Nanaimo Group, a sequence o f sedi-

mentary rocks formed dur ing the Mesozoic Era. Most we l ls i n both areas are completed i n t o bedrock. However, overburden i n both areas, comprising most- l y till up to several metres th ick , ove r l i es bedrock and some we l ls i n

Coombs are dug i n t o t h i s overburden to tap shal low groundwater. No high

capaci ty we l ls are known to e x i s t i n e i t h e r area - the bedrock aqui fers

appear to have very l i m i t e d y ie ld . Although Observation Well No. 288 penetrated several bedding plane f ractures, none proved productive. The

water chemistry suggests some s a l t y and/or brackish water may be seeping

i n t o the lower p o r t i o n o f both observat ion wel ls .

Water q u a l i t y from both observat ion wel'ls i s s i m i l a r even though the

we1 1 s are compl eted i n t o d i f f e r e n t fl ow systems. Hydro1 ogica l ly , Hornby

I s l a n d can be regarded as a freshwater mound atop a seawater basement w i t h

the mound con t inua l l y being recharged by p r e c i p i t a t i o n and discharging t o the sea, and i s separate from the f low systems o f Vancouver Is land. The

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r e l a t i v e l y high concentrat ions o f boron and f l o u r i d e may r e f l e c t the presence of some brackish groundwater seeping i n t o the wells. The aluminum

content may be n a t u r a l l y occurr ing o r may be from contamination during

sampl i n g - t h i s i s not c lear .

A more complete assessment o f the hydrogeology can be made through

continued monitor ing o f the bedrock aqui fers i n both these areas.

5. CONCLUSIONS AND RECOMMENDATIONS

Two 152 mm diameter observation wel ls were established: one each a t

Coombs and Hornby Island. Observation Well No. 287 a t Coombs was completed to 92 m i n s o f t black shales. Observation Well No. 288 a t

Hornby I s land was completed to 77 m i n i n te r l aye red conglomerates,

sandstonesand shales. Both wel ls have very low capaci t ies. The wel ls

are adequate however t o monitor water l e v e l response.

Cost f o r the d r i l l i n g con t rac t t o t a l l e d $7,996.17.

Water q u a l i t y from both wel ls i s s im i l a r : very s o f t and r e l a t i v e l y

h igh i n pH, dissolved minera l izat ion, f luor ide, boron and aluminum.

The waters can be character ized as Na-HC03 type water.

Water samples should be co l l ec ted a t l e a s t twice a year.

Water l e v e l should be monitored w i t h an automatic recorder f o r a minimum o f 10 years (P ic tures 16 and 17 and Appendix 0) .

6. REFERENCES

Wei , M. 1983. Groundwater Observation We1 1 Network Expansion Program

Proposal , 1983-84 F i scal Year. M i n i s t r y o f Environment, Groundwater

Section, V ic tor ia , B.C., F i l e 0183613-6.

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Zubel , M. 1982. Groundwater Observation We1 1 Network Expansion Program

Proposal, 1982-83 F isca l Year. M i n i s t r y o f Environment, Groundwater

. Section, V i c t o r i a , B.C., F i l e 0183613-8. I

M. Wei Geological Engineer Groundwater Section Water Management Branch

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- 14 -

hvince of British Columbia Ministry of Environment WATER MANAGEMENT BRANCH

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Ministry of Environment WATER MANAGEMENT BRANCH PFZ~ESUJTED oh) SWOEUSR OUGRAH.

yIll Location

Testhole #1

Obs. Well No. 287

Testhole #1

Obs. Well No. 288

Coombs

Coombs

Hornby Is1 and

Hornby Is land

2 54

152

152

152

TABLE 1

We1 1 Drll 1 f ng Summary

-

Depth (m)

8.84 -

92.35

67.06

77.11

7

[stimated del l Head 3 evat ion

( m )

-

103

-

42

E s t i mated Y i e l d (L/s) Status

~~

back f i 1 1 ed & abandoned

i n use

b a c k f i l l e d & abandoned

i n use

Estimated Je l l Bottom Elevat ion

( m )

11

-3 5

Estimated Sate r Level E levat ion

( m )

-

100

-

27

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m I

4

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Lhemi c a1 Parameters

Temperature ("C) Spec. Conductance

PH TDS Hardness Ca+2 Mgt2 Na+ + K+

( mhos/cm)

c1-

HCO3- Fe Mn F > B Ryznar Index SAR Index

so4-2

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TABLE 2

Water Chmi stry Sumnary

COOMBS

Observation Well No. 287

V e l d Analysis

9.5 7 10

10

42.8

6 1

>5.0

Lab Analysi!

970

9.2 584

9.78 2.83 0.66

228 + 1.1 33.7

1.2 465.8

0.57 0.02 1.65 0.79 7.7

32

HORNBY ISLAND

Observation Well No. 288 ~~

'i e l d Anal ys i s

10 1,600

10

576

3.5

.ab Analysis

1,210

710 9.1

7.27 2.22 0.42

268 + 1.4 164

1.6 375.0

0.16 0.01 1.93 1.46 8.3

43

*All parameters are i n mg/L except Temperature, Spec i f ic Conductance, pH, Ryznar Index and SAR index.

P i c t u r e 1. Looking nor th a t s i t e #1 (abandoned TH # 1 ) and 2 (Obs. Well no. 287) w i t h respect t o A l l a n S t r e e t r ight-of-way

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._ . ..

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Picture 2. Drilling Obs. Well no. 287 at s i te #2, Coombs

P i c t u r e 3. Estimating y i e l d

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Picture 4. Grouting the surface seal

Picture 5. Pulling out the 254 mm (10") 0 surface casing

. . ,_. . ._ . . ., . ._ -. . .. . _w - .

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Picture 6. Constructing the well lid

Picture 7. The completed Obs. Well no. 287

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Picture 8. Looking south at site #1, Hornby Island

Picture 9. Drilling testhole #1 at site #1

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Picture 10. Pulling out 152 mm (6") 0 surface casing and abandoning testhole #1

Picture 11. Looking south at site #2, Hornby Island

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Picture 12. Drilling Obs. Well no. 288 at site #2, Hornhy Island

Picture 13. Mixing ceme for grouting surface sear

__

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- Picture 14. Grouting surface seal

Picture 15. Constructing the well lid

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P i c t u r e 16. Obs. Well no. 287, Coombs

Picture 17. Obs. Well no. 288, Hornby Island

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Appendix A

Well Log F i l e s

WELL = = NO. 1- WATER W E L L RECORD

DEPT. OF ENVIRONMENT, WATER RESOURCES SERVICE, WATER INVESTIGATIONS BRANCH VICTORIA, BRITISH COLUMBIA aesvx--r

L E G A L D E s C R ~ P T ~ O N . L O T rq SEC. TP. - R. - D.L. ___ LAND DISTRICTAWGQSE P L A N

' E L €VAT I 0 N U E S T I M A T E O 0 SURVEYED C A S I N G D 1 A M . L L E N G T H z?'

METHOD OF CONSTRUCTION &QrARy CASING D I A M LENGTH - SCREEN LOCATION SCREEN 0 S I Z E LENGTH TYPE S A N I T A R Y SEAL Y E S 0 N O 0 S C R E E N O S I Z E L E N G T H T Y P E

PERFORATED CASING 0 LENGTH- PERFORATIONS FROM TO

GRAVEL PACK 0 LENGTH, DIAM SIZE CRAVEL.ETC.

FROM-L U M E A ~ U R E O ELEVATION ARTESIAN PRESSURE -- DISTANCE TO WATER 9 0 ESTIMATED WATER L E V E L

D A T E OF wATEP L E V E L MEASUREMENTJIALJL~H WATER USE 08 SER4A-r IOQ M P L L , (*287\

C H E M I S T R Y

T E S T B Y & W ~ A ? f ~ NrAL l a m A 7 o h V - d c o J v €.A D A T E

TOTAL D I S S O L V E D SOLIDS mgA TEMPERATURE - -c pH S I L I C A ('SlOz) mg/ I

CONDUCTANCE AT 25.C TOTAL IRON (Fe) mg/l T O T A L HARDNESS (COCO,) m g/I

TOTAL A L K A L I N I T Y (COCO,) mg/I P H E N A L K A L I N I T Y (Co COS) mq/1 MANGANESE(Mn1 mg/I

COLOUR O D O U R T U R B I D I T Y

pmhosfcm

A N I O N S mg/l pm . moll p m CAT I O N S

C A R B O N A T E (COS) C A L C I U M ( C d

MAGNESIUM (Ma)

S O D I U M I N o ) P O f A S S I U M I K )

I RON (DI SSOLVED) 33 ElCA R BON A T E (HCO,)

S U L P H A T E (SO,) C H L O R I D E t C l )

NO) NO) (NITROGEN!

0 TKN. (NITROGEN)

PHOSPHORUS ( P I

rn TKN T O T A L KJELDAHL'NITROGEN C H E M I S T R Y S I T E NO.

NO) N I T R I T E NOS m NITRATE

C H E M I S T R Y F I E L D T E S T S

T E S T B Y D A T E EOUIPMENT U S E D I I

-- -- CONTENTS OF FO-R

O D R l L L LOG 0 PUMP TEST DATA O C H E M I C A L ANALYSIS OSIEVE ANALYSIS 0 GEOPHYSICAL LOGS 0 REPORT

OTHER - .

PRO~UCTION TEST SUMMARY

lEST BY- 3AIL T E S T 0 PUMP T E S T 0

DRAWDOWN ?ATE ~

MATER L E V E L AT COMPLETION OF TEST PVAILABLE DRAWDOWN SPECIFIC CAPACITY 'ERME AB1 Ll TY STORAGE COEFF. rRANSMlSS lV lTY

DURATION OF TEST

SECOMMENDED PUMPING RATE RECOMMENDED PUMP SETTING

FROM I TO 1 D E S C R I P T I O N

I I

I I

I I

~

I

WATER W E L L RECORD VICTORIA, BRITISH COLUMBIA DEPT OF ENVIRONMEN r, WATER RESOURCES SERVICE, WATER INVESTIGATIONS BRANCH

U a a c c J r To 0 P L A N L E G A L D E S C R I P T I O N LOT.>- SEC 1 TP. - R - D L ___ L A N D DISTRICT-I f l

OESC RI P T I v E LOC A T I o N CE~JVU L - ~ P ,-R /WL=-JWW W . . . - - X S L A N I ? ~ LICENCE NO -DATE-

8 ELEVATION O E S T I M A T E D DEPTH- OF- 0 SURVEYED C A S I N G OIAM. 6' L E N G T H =lo' M E T H O O OF CONSTRUCTION A ~ ~ ' Q Z H K Y CASING OIAM - LENGTH

SCREEN LOCATION SCREEN 0 S I Z E LENGTH T Y P E S A N I T A R Y SEAL Y E S 0 N O D S C R E E N O S I Z E - L E N G T H T Y P E

PERFORATED CASING 0 1-ENGTH PERFORATIONS F R O M - TO

GRAVEL PACK 0 L E N G T H - DIAM SIZE GRAVEL, ETC.

DISTANCE TO WATER 15.03 Id O E S T I M A T E D WATER L E V E L

F R O M ~ L c O M E A S U R E D E L E V A T I O N ___ ARTESIAN PRESSURE -- D A T E OF WATER L E V E L M E A S U R E M E N T WATER USE S R V A T I O M w u 0.B

1-1 WELL NO. [T KuZLru -

2 X Y NO.

C H E M I S T R Y

T E S T B Y E d V m TAL b b A m v - D A T E ,&w% T O T A L D I S S O L V E D SOLIDS mgA TEMPERATURE - .C pH S I L I C A (SlOr) mg/ I

CONDUCTANCE AT 2s.c TOTAL IRON ( fc) mg/l T O T A L HARDNESS (COCO,) m p/l

T O T A L A L K A L I N I T Y (COCOS) mQ/I PHEN. A L K A L I N I T Y (Co COS) mq/\ MANGANESE(Mn) mg/l

COLOUR O D O U R T U R B l D l T Y

Brnhoskrn

A N I O N S mg/1 egm CATIONS mg/I * p m

C A R B O N A T E (CO,) C A L C I U M (Co)

MAGNESIUM (Mg)

S O D I U M ( N a ) P O T A S S I U M (K)

IRON(DISSOLVE0)

B ICARBONATE (HCO,)

S U L P H A T E (SO,) C H L O R I D E ( C I 1 NO8 NO3 (NITROGEN)

TKN. (NITROGEN)

PHOSPHORUS ( P I

e TKN T O T A L KJELDAHL N I T R O G E N

NO8 N I T R I T E NOS NITRATE

C H E M I S T R Y F I E L D T E S T S

TEST B Y D A T E EOUIPMENT U S E D

CONTENTS OF FOLDEJ

U O R l L L LOG O P U M P TEST DATA l3 CHEMICAL ANALYSIS O S I E V E ANALYSIS 0 GEOPHYSICAL LOGS 0 REPORT

n T u r o

FROM I TO

0 I 1 0 ,

ATE -thQ2.%L8 4-- EST BY -AIR: ebtPa9- IAIL T E S T O PUMP T E S T O IATE rJ 5 6.p. H- DRAWDOWN UATER L E V E L AT COMPLETION OF TEST IVAILABLE DRAWDOWN S P E C I F IC C APACl TY 'E R M E AB I LI T Y STORAGE COEFF.

DURATION OF TZT-

RANSMISS~V~TY

IECOMMENDED PUMPING RATE IECOMMENOED PUMP SETTING

D E S C R I P T I O N

coDJ&bc&mmY

I I -

I I I I I I I I I I I I I I I I I 1 I

- 30 -

Appendix B

Contract Costs

/' i

,,mephone: 245-2078 - 31 -

ISLAND WELL DRILLING Water M7cll Drilling Contractor '-1

W. J. W I L L I A M S , OWNER-OPERATOR - G R O U H E L ROAD, R.R. 1, L A D Y S M I T H , B.C. I I I I

Erovince of B.C., Nater Banagernent branch, 1,:inistry of Enviroment , Parl iament Bui ld ings , V i c t o r i a , B.C. V 8 V 1x5

3etCont rac t No. 75

tiarch 14, 1984

F i l e 92, F/B 1 0

Unit P r i c e Quani ty I t e m s

3 I A. ILob .& bemob. $200.00

2.

3 . I 1 4.

13 I 6.

b;ove Etwn s i t e s a t Coorr.bs Ilove Coombs t o

- - Hornby Is.

10" Cased a r i l l i n g 3O.Qo/ft.

10" re fund cas ing l'5.00/ft.

80.00/hr

6" Overlap e a s i n g 7. oo/f t.

1

1

1 82 '

82

57 5' 723 ' 3.5hrs.

15. 6" Aefundcasing S.OO/ft. 7 .5f t .

17. Standby 50. co/hr . 1.1 hr.

I 16. 6" Cap 6: F i t t i n g s 2O.OO/cap 2 ,I I

lu 5bags Cement €. OG/bag 5

F R E E ESTIMATES

c o s t

$ 200.00 J

- 2460.00 J

-1230.00 J

/ 402.50 j784.00 J

ir n-

I

$ 9261.50 57,2 C- 3.63. T o t a l of Items 1,4,6,7,12,16,17 &Cement --------- :.inus T o t a l of Items 1 3 tc 15 .................... &),2 67 e s@ 1268.50

11 Amount Due $ 7993- 00 4 3 1 q76.13

WATER MANAGEMENT BRANCH P* GOODS/SERVICES RECEIVED - - -

ON /??&& 9, /92+ L L

-. 4

3 2 - 48- Zlf -OS43/-zCY)/ 1

CHARGE TO 1 * - Y

I' ' ./ SIGNATURE r/Jd LA2 * - . I - 1 " - ,

DATE /it?acc/, 2 7 , /9$+ - I

I --- . -. ,

I I 1 1 I I I I I I I I I I I I I I I

- 32 -

Appendix C

Water Chemistry Reports

r I'

i

t

. --

2;8S 3550214 M G / L

CHROHf UM TOTAL

. _ _ _

I I

I I:

L 0.1 2S90211 M A G N E S I U M WG/L- - TOTAL-

2601413 Y A N C A Y E S E @ I S S C L v E D

OD36 2h60214 COBALT V G / L - ?OTAL

.............. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... .. . .... I - .- ._ .-

I I I

I c - . I ., .

I I I f I I

r H E A P P R O X I M A T E COST OF THE A B W E TESTS 13 S 187.20 -_ -

..- - -

I I I I I I I I 1 I I I I I 1 I I I I

- 37 -

Appendix D

Water Level Recorder Installation Specifications

W.S. tiodge

Groundwater Section Water Management Branch

T' Senior Technician

Re: Establishment of Observation Well #287, Coornbs

I n t r o d u c t i o n

April 1 2 , 1984 Date:

File: 0183613-8-287

On Monday, March 12 , 1984 an automatic water level recorder was ins ta l led on the recently dr i l led observation well i n Coornbs. This well along with another observation well on Hornby Island was dr i l led under Governnent Contract No. 75 - "Dril l ing, Construction and Testing of Groundwater Observation Wells a t Coombs a n d Hornby Island, B.C."

The purpose of establishing th i s observat ion well was t o monitor long- term water level f luctuations i n the aquifer. Most dr i l led wells i n t h i s area report low well yields and poor water quality (mainly hydrogen sulphide problems). Coombs area residents rely solely on groundwater for the i r water requirements.

We1 1 Location

T h e well i s located w i t h i n the Burgoyne Road right-of-way adjacent to Lot 1 4 , Block 5 , Plan 1939 (Figures 1 and 2 ) . Attached to this memorandum i s a copy of "Permission t o Construct Works Within Crown Lands" which has been approved by the Ministry of Transportation and Hi ghways.

Well Dri l l ina a n d Testinc Details

Date Drilled llarch 5-6, 1984 DeDth of Well 92.3 metres (303 f e e t ) Di aneter of We1 1 152 m (6-inch) Aquifer Material S h a l e Stat ic Water Level 2.77 m (March 12 , 1984) Yell Yield Approx. 1 /2 gpm Dril l ing Cont rac tor Island Well Dril l ing - Red Williams

Equipment on S i t e

1 steel recorder housing 1 152 mm diameter steel casing extension (1.2 rn length) 1 101 mm diameter weight drive p ipe 1 wood recorder s t a n d w i t h painter 1 8 k g lead clock dr ive weight 1 127 mn diameter f loa t 1 1 2 metre graduated f loa t tape

I I 1

I I I I I I I I I I I I I I

lI I

- 39 -

W.3, Hodae Anr i l 12. 1984

1 met r i c Stevens water l e v e l recorder (RG 30) w i t h Chelsea c lock (C6

1 6 ounce counterweight 2 c l i p s 1 V i r 0 lock

'59) w i t h 2 : l gage scale

The recorder housing and standpipes were painted dark preen and a M i n i s t r y o f Environnent i d e n t i f i c a t i o n l abe l and number (287) was attached t o the housing.

Ground Level Datum Eeasurenents

S t a t i c w a t e r l e v e l t o p o i n t e r .................. 4.279 metres Ground l e v e l (concrete pad) t o p o i n t e r ......... 1.510 metres Tape reading ................................... 1.956 metres

The c o r r e c t i o n f a c t o r t o be app l ied t o the tape reading i s t he re fo re t0.813 netres.

Ob server

Frs. Sharon Etty Highways f l a i ntenance Yard Box 249 P a r k s v i l l e , B.C. VOR ?SO Telephone: 248-6212

r lrs. Et ty w o r k s f o r the K i n i s t r y o f TransDortat ion and Highways i n P a r k s v i l l e and has aareed t o change the recorder char ts nonth ly and send then d i r e c t l y t o the M i n i s t r y o f Environnent rea ional o f f i c e i n Idanairno. There w i l l be - 110 charge f o r t h i s service.

D3ve Kalyn Techni c i an Grou ndwa t e r Sect i on Water Planagement Branch 387-1 115

DK / dma

i ............. ._ ._ -- -. - .... .... __ I

DAIE SCALE: WM.. ... .I..: 50 ,000 . . . . . . .

70 ACCOMPANY REPORT ON

+tea? .............................................. I !larch9 .J 984.., Province of British Columbia Ministry of Environment

Coombs Observation Well No. 287 ........................... . . . . . . . . . . . . . . . . . . . . . . Y t \lei. .. ENGINEER

WATER M A N A G E M E N T BRANCH FILE No. 0153613-~-!?7 owc. No. . . I . . . . . . . . . .

I

P 0 I

N

1

Province of British Columbia Ministry of the Environment ENVIRONMENTAL AND ENGINEERING SERVICE

WATER INVESTIGATIONS BRANCH

. -___.

DATE S C A I E VERI h2'/r3 7 0 ACCOMPANY REPORT ON

CoanBS - 005€R~AT\oN MJELL MOR 50' /rma9/84 NO* 207 fi!, WE/ ENGINEER

FILE No 32F d DWG N~ FGL'PE 2

I

I

4

b . j

/35. 7 ' V 4

56' b

I I C

I 1 I I I I I I I I I I I

!'-->. S. Hodge TG- 'Senior Technician

Groundwater Sect ion Water Management Branch

Apr i l 12, 1984 Date: File: 0183613-B-288

Re: Establishment of Observation Well #288, Hornby Island

Introduction

On Tuesday, March 13, 1984 an automatic water level recorder was instal led on the recently dr i l led observation well on Hornby Island. T h i s well along with another observation well i n Coombs was dr i l led under Government Contract No. 75 - "Dril l ing, Construction and Testing o f Groundwater Observation Wells a t Coombs and Hornby Island, B.C."

The purpose of establishing t h i s observation well i s to mnitor lona- term water level f luctuations i n the aquifer. Many of the nearby dr i l led wells i n this area (T- y ) report poor water qual i ty and low well yields. Some well owners have also reported s a l t water i n t he i r wells. Well density i s very h i g h i n t h i s area and residents are very concerned a b o u t the q u a l i t y and quantity o f groundwater, as i t i s the i r sole source of water.

Well Location

Observation we1 1 6288 i s located w i t h i n the Central Road right-of-way adjacent t o L o t 2 , Section 1, P l a n 26598, Hornby Island (Figures 1 and 2 ) . Attached to th i s memorandum i s a copy of "Permission to Construct Works GIithin Crown Lands" which has been approved by the Ministry o f Transportation a n d Highways.

Well Dril l inq a n d Testinq Details

Date Drilled March 8-9, 1984 Depth o f We1 1 Di aneter of We1 1 152 m (6-inch) Aqui f e r Materi a1 'I Shal e Stat ic Water Level 15.031 m (March 13, 1984) \Jell Yield Approx. 5 gallons per hour Dril l ing Contractor Island Well Dril l ing - Red Williams

77.1 metres (253 f ee t )

Eauipmont on S i t e

1 steel recorder housing 1 152 mrn diameter steel casing extension (1.2 m length) 1 101 mm diameter weight drive pipe 1 wood recorder s t a n d w i t h pointer 1 8 k g lead clock drive weight 1 127 mm diameter f l o a t 1 1 2 metre graduated f l o a t tape

I

1 I I I 1 I i I I I I I I I I I I

F** - 43 -

April 1 2 , 1984 t9 W . .,: Hodge

1 metric Stevens water level recorder ( R G 38) w i t h Chelsea clock (CG

1 .6 ounce counterweight 2 c l ip s 1 Vir0 lock

4 3 ) w i t h 2 : l gage scale

T h e recorder housing and standpipes were painted dark green and a Flinistry of Environment ident i f icat ion label and number ( 2 8 8 ) was attached to the h o u s i n g .

Ground Level D a t u m Measurements

Stat ic water level t o pointer .................. 16.681 metres Ground level* to pointer ....................... 1 .650 metres Tape r e a d i n g ................................... 3 .229 metres

*Ground level i s 0.300 rn below bottom of s l i p - o n sleeve.

The correction factor to be applied to the tape reading is therefore +ll.R02 metres.

Observer

Mr. Gordon Batement Highways Kaintenance Yard General Delivery Hornby Island, B.C. VOR 1ZO Telephone: 335-2722 (Yard)

335-0227 (Home)

t4r. Bateman works f o r the Ministry of Transportation and Highways on Hornby Island and has agreed to change the recorder charts on the Denman Island observation \!e11 ( g 2 6 8 ) . These charts will be nailed direct ly to the Hinistry o f Environment regional off ice in Nanaimo a n d there will be - 110 charge f o r th i s service.

Dave Kalyn Technician Groundwater Section k' a t e r :,la n a gem e n t B r a n c h 387- 1115

Dt:/dma

I

. -. ..

...... __- .....

. . . . . . . ....... , . . .

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Province of British Columbia Ministry of Environment WATER M A N A G E M E N T BRANCH '. .

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