kala ground water consulting ltd

.

, KALA GROUND WATER CONSULTING LTD.

#3 - 3107A - 31st Ave. 208 - 220 4th Avenue 0 Vernon, B.C. - V1T 2G9

Tel (250) 545-1720 17 Kamloops, B.C. - V2C 3N6

Tel (250) 372-9194

October 16, 1997

Regional District of 101 Martin Street Penticton, B.C. V2A 5 J9

Fax

' Okanagan-Similkameen

372-93 98

> 17 i ~ ~ --.,7$ Y Attention: Mr. G.A Davidson

Dear Sirs: _- Senior Planning Technician > ,

Re: Water Supply Evaluation - Proposed Subdivision of Part of the SE %, Sec. 5 Tp. 51, S.D. Y.D. -

1.0 Introduction

The present investigation has been conducted at the request of to assess the capacity and

water quality of two existing water wells as a source of potable water for the proposed subdivision

described herein, and to and also to establish possible effects by utilizing the available groundwater

resources to neighboring water wells. It is currently proposed to subdivide one parcel of land from the

parent property as shown on the attached subdivision plan (Figure 1). Our investigation has been carried

out in pursuant to the RDOS's Subdivision Bylaw .No. 300.

The investigation carried out by Kala Groundwater Consulting Ltd. (Kala) has involved a site inspection,

accompanied by pumping tests with each of the water wells and the collection of water samples for a water

quality analysis. In addition a review of existing available information has been made. Sources of existing

information have included a surficial geology report, a topographic map and reports on existing water wells

available from the B.C. Ministry of Environment. I . I . , . . , l , , i . * L I . L . . * . % c i * . . * . . . - . . I , : ~ , , ~ ~ . , ~ . , , , ~ ' , , ~ , . , , . , , .

Kulu Groundwater Consulting Ltd.

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Alan Kohut

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\ REM. SOUTH EAST 1/4 SECTION 5

rowIvsHIp 51

i EuBwuFrFFIOCES5I0YU

LM wsrm M. Box wo 0SOKU.S B.C. . mi fV0 hWlW2 49S - 7f27. FAX 4% - 6676. (XR FZLE No. N O O J t - f . h € L PLAN 34724

Alan Kohut

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2.0 Site Description

The proposed subdivision is located approximately 7 kdometers northwest of Osoyoos along Highway 3,

opposite the Old Richter Pass junction. It is situated along the bedrock upland area which overlooks the

Okanagan River valley and Osoyoos Lake.

On a more site specific basis the topographc expression for the property can be divided into two fairly

distinct landforms. The southern part (proposed Lot 1 and Well No. 1) is situated along a bedrock ridge or

knoll which rises to an elevation of 500 plus metres above mean sea level. The northern portion

(Remainder parcel and Well No. 2) is situated along a bedrock gully which extends westward along Richter

Pass. Well No. 2 has been drilled within a closed depression which shows evidence of a seasonally high

water table on the basis of the wet marshy soils contained within. .

Based on a report by Hugh Nasmith (198 1) the surficial materials in the local area are comprised of a thin

mantle of glacial moraine overlying bedrock. Bedrock is exposed at several locations throughout the

property. The bedrock strata occurring in the local area has been mapped as Fairview granodiorite and

associated rock types of Jurassic age and/or younger.

3.0 Existing Water Wells

Existing water wells in the local area are generally completed in the bedrock strata to depths ranging

anywhere between 140 and 460 feet. Reported well yields range between 2 and 30 gpm with a median well

yield of 2.5 gpm. Based on a study conducted by the B.C. Ministry of Environment, the bedrock aquifer is

generally low with respect to vulnerability and there have been few concerns expressed with respect to

water quality or quantity.

Existing wells on the proposed subdivision are summarized in Table 1 below.

Kala Groundwater Consulting Ltd. Page 2

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Regional District of Okanagan-Sb.dkameen/G.A. Davidsodl6 October, 1997 Water Supply Evaluation - Proposed Subdivision of SE %, Sec. 5, Tp. 5 1, S.D.Y.D.

4.0 Description of Studv Program

A site inspection was made of the property on September 15, 1997. At the time of the site visit, brief

pumping tests were conducted with each of the existing wells to confirm reported yield information

contained in the water well records (see attached). In the case of Well No. 1, the well seal was designed in

a fashion which would not allow drawdown measurements. Consequently the well was pumped at a rate of

6 Igpm for 3.5 hours and a water sample was obtained. This well has been used by the owner for the past

seven years with a reported yield of 5 USgpm. Well No. 2 located on the remainder parcel was pumped at

a rate of 15 Igpm initially and drawdown was observed. After one hour the rate was decreased to 4 gpm

and water level measurements were obtained for an additional one hour period. Near the end of pumping, a

water sample was also obtained and both samples were forwarded to Car0 Environmental Services for a

water quality analysis.

5.0 Results of Investigation

Based on the results of the present investigation, it is the opinion of Kala that each of the existing wells is

capable of providing the minimum yield requirement of 3 gallons per minute (RDOS's) Subdivision Bylaw

300 - Proof of Water). An estimate of the sustained yield for each well is as follows:

Well No. 1 - 5 Igpm

Well No. 2 - 6 Igpm

Further it is Kala's opinion that pumping from each of the existing water wells will have minimal effects to

surrounding neighboring wells providing the wells are used for domestic purposes only and not large scale

irrigation watering.

With respect to water quality a summary of the water analysis for each well is shown in Table 2 on the

following page. . . ~ . , 1 I , . . . . , , , 1 . , . , , ~ ~ . , , . I . l , . . l , . . . . l . , . , . . l ~ ~ . ~ . . . , . . . l . l ~ . r . . . , . l l I . . ~ I . . . I


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Alan Kohut

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Regional District of Okanagan-SL.,lkameedG/G.A. Davidsodl6 October, 1997 Water Supply Evaluation - Proposed Subdivision of SE %, Sec. 5, Tp. 51, S.D.Y.D. -

Alkalinity (Total) mg/L as CaC03 Chloride mgL Coliform (Fecal) colonies/lOOml Coliform (Total) colonies/lOOml

227 274 - 3.1 191 250 0 0 0 0 0 <IO

Color (True) Color Units Conductivitv umhos/cm

I I I

Cadmium I <0.0002 I <0.0002 I 0.005

~~~

<5 <5 < 15 570 1910 -

Calcium Chromium

. . l . . . , . . . . . \ . , . l . . " . l . " .

Results of the water analysis show a fairly significant difference between the two sources. In the case of

73.5 191 - <0.01 <0.01 0.05

Kala Groundwater Consulting Ltd Page 4

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Regional District of Okanagan-SL..lkameedG.A. Davidsodl6 October, 1997 Water Supply Evaluation - Proposed Subdivision of SE %, Sec. 5, Tp. 51, S.D.Y.D.

Total dissolved solids Flouride Sulfate

Well No. 1, all parameters for which an analysis was performed, meet the ‘‘Guidelines for Canadian

Drinlnng Water Quality” for both health related and aesthetic parameters. The same criteria however

does not apply for Well No. 2, as a number of parameters exceed the acceptable or recommended limits for

health and aesthetic related parameters. A summary of these parameters is as follows:

<500

G O O 1.5

I Manganese

I Turbiditv I I <5 I

<0.05 I Iron I I <0.3 I

Results of the water quality analysis show that use of Well No. 2 as a source of potable water must be

accompanied with some form of water quality treatment such as reverse osmosis. It is our current

understanding that Well No. 2 has not been pumped to any great extent and therefore it is recommend that

the well be chlorinated (background coliform was fairly high) and pumped at a constant rate for at least a

24-hour period. This should reduce the turbidity and possibly the concentration of some of the other

parameters included in Table 3 .

We trust this meets your present requirements and if there are any questions, please do not hesitate to

contact the undersigned.

Yours truly,

Kala Groundwater Consulting Ltd.

Hydrogeologist

. . . . . . . . . ~ C ~ / i t . . . . , . , . . , . . . . , . . . . , . , . . , . . . . . . . . , . . . . , . . . . . . , , , . . . , , , . . . . . , , . , , .


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oc t:ol:>er 3, 3.99'7

Kala Groundwater Consul 1. irig L t d . S i 1 i 1 c? 3 , 3 1 0 7 A - 31 :;I-, R V C ~ I I J C ? V f-:RTION, RC V I T 3G9

A t I;n : L a r r y Topp

:;;imp Led: Sept 15 , 199.7, 3 : 3Opm

AJ k a L i n i ty ( 'ToLaI) Aluminum Rr-sen ic Barium t3oron C a dm i u m Ca I c i u m C h l oride C h r o m i u m Color (True) Conductiv i ty C oppe E Cya ti i de Dissolved Sol i d s (Tots 1 ) k'luori d e Hardness ( T o L a l ) I ron JEdd Magries i urn Ma n gnn c 9 e Mercirr y P?o 1 yb de n u m Ni LI ate

liece i.ved :

22'7 ( 0 . 2 (0. 01.

0 . 0 3 < o . 1 < 0 . 0 0 0 2 7 3 . 5 3.1

< o . 01 <5

5 '7 0 < o . 01 ( 0 . 03.0

0 . 6

0 . 0 8 < o . 001 2 3 . 8

0.029 ( 0 . 00005 <O. 03 <0.03.

386

2132

Sept. 1 6 , 1.997

.....--__ . I . . I . . l . . . . , . ~ r . . . . , , .

THE INFORMATION CONTAINED IN

THIS REPORT IS THE CONFIDEN'I-IAL

PROPERTY OF THE CLIENT. P,NY

LIABILITY ATTACHED THERETG iS

LIMITED TO THE FEE CHARGED.

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Alan Kohut

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K n l n Groundwater Con s u J . t i n q act:. 3 / 9 7 ( c m n t )

PII Po t a S Y i urn :;odium Su Lphate T u lrbidi Ly [Jraii i i i m

Z i n c Tot:nl Col i f o r m Fecal C o l i i r o r m

'1 . 6 3 . 0

22.4 9 3

0 . 4 0 0 . 0 0 I, 'I 5

( 0 . 005 0 0

p H Uni ts my / T., mg/L m g / 1, N . T . U . m c j / I, m g / I l colonies/ I OOmT, col .on i es/l.Ooml,

E r i c I os u r e

\

...--. . . * , , - THE INkOdMATiON' COlhkINkD 'IN

THIS REPORT IS THE CONFICEiUIAL

1 PROPERT?' OF THE CLIENT. ANY

LIABILITY ATTACHED THEFETO Is LIMITED TO THE FEE CHARGED.

% .

s33

0c.tok:er 3, 1.99'7

At. l.n : 1,arry Topp

S a m p I . e c l : Sep t . 15, 1.997, 2 : O O p m

AI k a l i n i L y ('I'oLal) Aluminum A c se n i c L3a r i um Boron Cadmi u m C 1 c, i um C h l o r i d e C h r o m i urn Colo1 ( l ' r u e ) Conduc,l.i vj ty Copper Cya TI i de JJi s so l v e d S o l i d s ( T n t n l ) F'I uori de €Llrdne3:3 (To t -c l l ) 7 ron Lead M a q r i e s i u m Md ri LJ d n e !3 e M e II c u ry Mo 1 ybdeniim Ni I.ral.e

R e c e i vcd :

27 4 c o . 2 < O . O I

0 . 0 2 <O. 3. (0. 01102

1.9 3. 193 < 0 . 0 1. < !j

1.910 < 0 . 0 :I. < 0 . 0 3 .0

3.5 0 0

1318 3 . 7

1. . 3 7 0 * 0 3 . 3

0 . 3 1. 5 < o . 00005 < o . 03 0 . I 2

3 0 7

. . . 2

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Alan Kohut

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We]. 1 If2 (con t- )

7 . 5 p H I J n i t-s P H 1.0 L a s s i u m 9 . 7 mg / 1, S o d i u m 1 0 6 mq / 1, S u 7 phate 5 90 mg / L ‘hrb i d i ty IJron i iini mg/ Ll Z i n c 0 . 0 0 8 mg/L Total. C o l . i f o r m * 0 co 1 o n i e s / I 0 OmI, * also u n i d e n t i f i e d bacterial bnckyrour td greater t h a n 2000 c o l / 1 O O m J , Fecal. C o l i f o r m 0 col onies /200rnL

3 4 N . T . U . 0 . 0 0 ‘7 8 7

li’lu( ( 2 S U ) 545-1.720

-. I THE INFQRklhTIQN $OYTP$NED, IN,

THIS REPORT IS THE CONFIDENTIAL

PROPERTY OF THE CLIENT. ANY

LIABILITY ATTACHED THERETO Is LIMITED TO THE FEE CHARGED.

1 I

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Alan Kohut

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Province of British Columbia M y of Environment and Parks Water Managen BrTch

W A T E R W E L L , R E C O R D Oote w E L E V U

we(l N T S MAP 111111111111 WELL N 0 . f I I I :m I I i 1 I I I E ] I I / 1 I ] I N 1 Owners Nome Ei Address

& Dote 19- ~ y p e ~ .-*

' Thickness1

OF WORK 3 0 Deepened 4 0 Abandoned

I ins

1 0 Gable tool 2 0 Bored 3 0 Jetted 4 m o t o r y a O m u d b LKd c Oreverse

3. WATER 1 ILX'omestic 2 0 Municipal 3 0 I r r igat ion

4. D R I L L I N G ADDITIVES

5. MEASUREMENTS from 1 O g r o 6 d level 2 0 top of cosing

*' 0 Other

W E L L USE4 0 Comm 8 I n d 0 Other

Weight 1

d s c r i p t i v e LoSot ion ,d

I. TYPE 1 d N e w Well 2 0 Reconditioned 9. CASING: 1 O S t e e l 2 OGolvonized 3 OWood Materials 4 d s t i c 5 Concrete

0 Other units

Diometer

f rom t o f t

I I b / f t

casing height above ground level

*. I n I I

n. SWL

f t '",'I :: I 6 . W E L L LOG DESCRIPTION

Length Diom I D

/ . r ) . i f t ? .1 ,f n ins

I .

0 DRAWDOWN in f t

Z CONSULTANT Address ____

0 RECOVERY in f t

8. WELL LOCATION SKETCH

i 1 7 1

Pitless u n i t f t 1 0 obove 2 0 below ground level l o Welded 2 OCemented 3 OThreoded I 1 ONew 2 OUsed Perforotions :

Shoe ( 5 ) :

Open hole, from ~ to ~ f t Diometer ~ ins

Grout :

IO. SCREEN: 1 ONominal (Telescope) 2 O P i p e Size

Type 1 0 Continuous Slot 2 OPerforoted 3 0 Louvre

Moteriol 1 0 Stainless Steel 2 0 Plostic oOther-.--.-- Set from-to-ft below ground level

0 Other

RISER, SCREEN 8 BLANKS I units

F i t t i ngs , top [AWL <J=$.-,-bottom

Grovel Pock

I I. DEVELOPED BY: 1 OSurging- 2 D J e t t i n g 3 Bd 4 0 Bo i l i ng 5 0 Pumping 0 Other

12. TEST 1 fl Pump 2 O B o i l 3 n & r Dote Rote$-USgpm Temp*C SWL before t e s t z f t

Water Level e f t ofter test o f e h r s

RECCUMENDED PUMP TYPE

USPP 13.

14.WATER TYPE: 1 M s h 2 Osolty 3 Ocleor 4 Ocloudy colour smell ; gas 1 Oyes 2 On0

15. WATER ANALYSIS: 1 H o r d n e s s l m I m g ! L

2 l r o n u mgiL

4 PH Field Date 1-1 3 Chloride= mg/L

" SITE I D No f i 1 Lob Dote-

16. F INAL WELL COMPLETION DATA Well Depth I m f t Static Water Level1 I ~ P j i - I f t ~CYU ~ ~ g p m F E F L L U ~ ~ Back f i l l e d

Well Yield d USgpm

Member, B C W W D A & u n o ; c;

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BCH @ Province of British Columbia iironment Water Management Divis

W A T E R W E L L . R E C O R D Dote K4l / o Lo ' I :? '

Owners Name tl Address ~ s ~ ~ f

Legal Descr ipt ion B Address s d-nQf/ sovn Descriptive Loca t ion /?c 5 HY d U r' ,-% 0 I? 2 5 ~ ~ L 5 7 9 7 5 s flW 3. OJO'JOO 1 ~_

I TYPE 1 &New Well 2 Reconditioned 9 CASING 1 d S t e e l 2 OGolvanized 3 OWood

2. W ~ ~ K 1 &Cable tool 2 0 Bored 3 0 Jetted

OF WORK 3 0 Deepened 4 Abandoned Mo+er,ols 4 t j 6 l o s t i c 5 O c o n c r e t e

4 0 Rotary a O m u d b O a i r C Oreverse 0 Other

3. WATER 1 &Domestic 2 OMun ic ipo l 3 0 l r r igot ion 1

4. D R I L L I N G ADDITIVES

5. MEASUREMENTS from 1 Oground level 2 0 top of casing

W E L L USE4 0 Comrn 8 I n d 0 Other - --.t i __-

Pitless unit-ft 1 0 obove 2 0 below ground level 1 @Welded 2 HCemented 3 OThreaded I 1 d N e w 2 OUsed casing height above ground level

IF?PMI T? 16 WELL LOG DESCRIPTION I S!L I S h o e ( s ) : b " b > L J d i y .+) 26-9 L ih- Open hole, from 9 5' ' to / R b f t Diameter-ins

I I I 1 I I .

I I I I

IO. SCREEN: 1 ONominal (Telescope) 2 O P i p e Size

Type 1 OContinuous Slot 2 OPerforated 3 O L o u v r e

Moteriol 1 0 Stainless Steel 2 0 Plostic ODther- Set from-to-ft below ground level

0 Other

I RISER. SCREEN 8 BLANKS I " " i + S l

Length f t Diorn. I D ins Slot Size i ns

from I I f t to I 1 I f t

.. F i t t i n g s , top bottom

Grovel Pock _ _ ~ 1 1 . DEVELOPED BY: 1 U s u r g i n g 2 OJe t t i ng 3 O A i r

1 2 . T E S T l O P u m p 2&Boi l 3 0 A l r Dotel';411a4i

4 d o l l i n g 5 O P u m p i n g 0 Other

R a t e x S pm T e m p L O C SWL before t e T / . Z C f t Water Level a f t ofter test o f a h r s

- -

I II I I L I II I , I

RECMMENOED PUMP TYPE RECOMMENDED PUMP SETTING RECOMMENDED wMmm MTE I 2

t . I I I 1 1 I

Z CONSULTANT

8. WELL LOCATION SKETCH

I d . 1 fi U5gP

14.WATER TYPE: 1 d e s h 2 Osolty 3 M o r 4 Ocloudy colour smell ; 1 Oyes 2 On0

15. WATER ANALYSIS: 1 Hordnessl I 1 1 I lmg/L

2 l r o n u mg/L 3 C h l o r i d e L u mg/L

. f , 4 p H Field Date Address

Lob Dote L-+i&-+

I

16. F INAL WELL COMPLETION DATA Well Depth I / I Mal Iff Well Yield USgpm

Stotic Water L e v e J A K L J A f t t F u US gpm E r U f t

. Member, B C W W D A a y e s u n a ;

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kala ground water consulting ltd

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