16
bd g2940, 8'2L ol'3244 ???- . ICLI..L>" ..._ . . ij .~ Gyvzi i I 1 < * y, Ground Water International Consullbrg Hydq?Sq;sls MINISTRY OF WATER U N O AND AIR PROTECTION GWI 087104 September 20,2004 DeansTech Consulting 10553 Okanagan Centre Road West Lake Country, B.C. V4V 2H8 Attn: Rich Deans. C.Tech. Re: Well Test - Lot 15, Plan 23583, Charolaise Road, Lake Country, B.C. DeansTech File No: J04-00095 Dear Mr. Deans: This letter confirms that I have reviewed the above-captioned report, and am in general agreement with the findings and conclusions presented therein. Yours truly, Ground Water International SAC Todd Hamilton, M.App.Sc., P.Geo. Senior Hydrogeologist APEG No23013 I_ -l^-ll^-ll_l_~ .-I__- B Calle Eduardo de Habich 180 - Miraflores * F3 241-3041 & 226-1758

bd Gyvzi g2940, - a100.gov.bc.caa100.gov.bc.ca/appsdata/acat/documents/r7867/OK178_115713063… · drilled to 18 feet in 1965 had a static level of 7 feet below ground, and the

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Page 1: bd Gyvzi g2940, - a100.gov.bc.caa100.gov.bc.ca/appsdata/acat/documents/r7867/OK178_115713063… · drilled to 18 feet in 1965 had a static level of 7 feet below ground, and the

b d g2940, 8'2L o l '3244 ???- . I C L I . . L > " ..._ . .

ij .~ Gyvzi i I 1

< * y, Ground Water International

Consullbrg Hydq?Sq;sls

MINISTRY OF WATER U N O AND AIR PROTECTION

GWI 087104

September 20,2004

DeansTech Consulting 10553 Okanagan Centre Road West Lake Country, B.C. V4V 2H8

Attn: Rich Deans. C.Tech.

Re: Well Test - Lot 15, Plan 23583, Charolaise Road, Lake Country, B.C.

DeansTech File No: J04-00095

Dear Mr. Deans:

This letter confirms that I have reviewed the above-captioned report, and am in general agreement with the findings and conclusions presented therein.

Yours truly,

Ground Water International SAC

Todd Hamilton, M.App.Sc., P.Geo. Senior Hydrogeologist APEG No 23013

I_ - l^- l l^- l l_l_~ .-I__- B Calle Eduardo de Habich 180 - Miraflores * F3 241-3041 & 226-1758

Page 2: bd Gyvzi g2940, - a100.gov.bc.caa100.gov.bc.ca/appsdata/acat/documents/r7867/OK178_115713063… · drilled to 18 feet in 1965 had a static level of 7 feet below ground, and the

1 , DeansTech Consulting

August 10,2004 DeansTech File No: J04-00095

I t o l a i s e Drive Lake Country, BC V4V 1B6

Dear Sir:

Re: Well Test - Lot 15, Plan 23583, Charolaise Road, Lake Country, B.C.

1.0 INTRODUCTION

DeansTech Consulting (DeansTech) has been retained by owner of the above noted property, to assess well yield and water qua!-ell located on - -

the above-captioned property. Lot 15 is an irregularly-shaped lot located along the north side of Charolaise Road in the Carr’s Landing area of Lake Country. The property is situated in the uplands area of Carr’s Landing in a low density rural setting and is presently undeveloped.

2.0 FIELD ASSESSMENT

2.1 Background

The legal description of the property is Lot 15, Plan 23583, O.D.Y.D. The property is 3.5 hectares (8.74 acres) in area and gently sloping to the southwest, towards Charolaise Road, which forms the south property boundary. The property is bounded on the east by Herford Road and on the north and west by rural residential properties of similar topography. The relative location of the property is presented at a 1:50,000 scale on the attached Figure 1.

DeansTech understands that the property owner intends to build a single family dwelling on the property and that the present well is to supply the domestic water for that house. Mr. Haase engaged DeansTech to assist with the assessment of the well capabilities and to determine if the well supply meets the District of Lake Country requirements for by- law 97-139 for water supplies from wells.

A water well search of the BC Ministry of Water Land and Air Protection (MWLAP) water well database was carried out for the area around the site. Only two water wells were listed for the immediate area, for which the well records are not complete. One well drilled to 18 feet in 1965 had a static level of 7 feet below ground, and the other well was drilled in 1987 to 260 feet in bedrock.

DTC - 10553 Okanagan Centre Road Wesf-EC. V4V 2H8

Phone: (250) 766-0533 p Fax: (250) 766-0513 h Cell: (250) 3 17-6728 e-mail: [email protected]

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, August 10, 2004 Page 3 JO4-00095

No other groundwater or well information is available from the well logs. A copy of a plan showing the well locations is attached for reference. Based on our experience in this area of Lake Country, there are several (13) existing homes in this 39 lot subdivision and each home likely has its own water well. Bedrock is quite shallow in this area, so it is also likely that most of the wells are bedrock wells. However, we understand that some of the wells in this subdivision are shallow overburden wells situated in the ditch along Commonage Road.

The water well search indicated the area has an aquifer rating as a low producer, medium user demand, and low vulnerability with regards to environmental impacts.

2.2 District of Lake Country Requirements

The water well requirements for the District of Lake Country, as laid out in Subdivision and Development Servicing Bylaw No. 97-139, Section 3.01, Requirements for Wells are as follows:

0 All wells must be drilled and cased.

0 All wells must be capable of delivering water at a rate of not less than 20 litres per minute (lpm) per well over a one hour period to a minimum of 2,300 litres per day (lpd) per dwelling unit.

Wells must be restricted to supplying water to only one parcel for which the well is the water source, the well, water mains, and all other appurtenances must be protected by an easement.

0 All quantity and quality testing must be verified by an Engineer specializing in groundwater hydrology.

0 A water sample taken from the well must be tested to determine conformity to potable drinking water standards. The test results must be submitted to the District Engineer and the Ministry of Health. The test results are to be registered in Land Title Office against the title of the parcel as a restrictive covenant as prescribed in Schedule A.5 of this bylaw.

0 A map prepared by a surveyor must be provided indicating the location of all wells.

DTC

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, , August 10, 2004 Page 3 J04-00095

2.3

3.0

3.1

Well Construction

A plan of the property showing the well location and the property boundaries is presented in the attached Figure 2. According to the well log prepared by Cascade Drilling Ltd., the well was drilled with a 15 cm (6”) diameter drill to 171 m (560 feet) depth with 16.8 cm (6 5/8/”) diameter steel casing installed from the ground surface to 3.6 m (12’) on July 12, 2004. The well was installed in fractured bedrock.

According to the well driller’s soil log, the overburden soils consisted of thin topsoil over sand and gravel to 3.6 m (127, weathered bedrock to 5.5 m (18’) and unweathered bedrock to 171 m (560 feet). The main water bearing fractures were encountered below 158 m (520 feet). Visual observations of drill cuttings at the site confirmed the above- mentioned soil types were encountered, with pinkish coloured granite cuttings on the top of the drill cutting spill pile. The well log indicates the static water level was at 33.5 m (1 10 feet) below the top of the casing upon completion of drilling.

A short duration air-lift well production test was carried out by the driller upon completion of the drilling. The drill stem was placed near the bottom of the well while air was injected into the well for a period of approximately one hour. The well water was forced to the surface at a rate measured to be approximately 27 lpm (6 igpm). The driller recommended a pump setting of 158 m (520’) with a maximum pumping rate of 27 lpm (6 gpm). By the end of the air-lift test, the water was described as clear, as indicated on the drill log. The entire depth of the well was lined with a slotted schedule 40 PVC liner to prevent rocks from falling into the well.

WELL TESTING

A minimum of 24 hours of pumping was required to adequately assess the capability of the well and to meet the Lake Country requirements in Bylaw No. 97-139, Section 3.01.

24 Hour Constant-Discharge Pumping Test

A 24 hour constant-discharge pumping test was carried out by Aquatech Services Ltd., starting July 14, 2004, at 10:07 AM. Prior to the pump test setup, the static water level was measured to be 29.7 m (97.6 feet) below the top of the casing. The pumping rate was set at 15 lpm (3.3 Igpm, 4 USgpm) and was monitored periodically throughout the pumping test, by Aquatech and DeansTech, to confirm a consistent rate of pumping. A copy of the recorded pump test data is presented on the attached Figure 3 and a plot showing the projected drawdown after 100 days of pumping is presented on Figure 4. Photographs of the pumping test and sampling are also presented as attachments.

DeansTech reviewed the pump test procedures and assisted with water level recording at the start of the pump test. AquaTech monitored the water level during the pump test. The water level recovery for the well was initially monitored by Aquatech and later by DeansTech with indications of good recovery levels.

DTC

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. August 10, 2004 Page 4 J04-00095

The discharged water produced during the pumping process was directed away from the wellhead and down slope of the well to avoid infiltration around the well casing annulus or into the aquifer close to the well. During the initial part of the pump test, the water appeared quite murky, although near the end of the pump test, the water was relatively clear.

Near the completion of the 24 hour pumping period, a water sample was collected by DTC directly from the pump discharge line and into sterile containers provided by the laboratory. Clean latex gloves were worn to help minimize the potential for introduced contamination. The sample was immediately placed in an ice-packed cooler and transported to Nonvest Labs for chemical analysis.

The pump was shut down after 24 hours and the water level recovery in the well was monitored for a 24 hour period. The water level in the well recovered to 91% after 24 hours with indications, based on the recovery plot presented on Figure 3, that the water level in the well would completely recover. The recovery data is presented on Table 3, and a plot of the data showing the recovery curve is presented on Figure 3.

3.2 Pumping Test Analysis

The B.C. MWLAP produced a guidance document in 1999 entitled “Evaluating Long Term Well Capacity for a Certificate of Public Convenience and Necessity (CPCN)”.

When evaluating long-term well capacity MWLAP suggests the following four factors be considered:

1. adequacy of pump test procedures; 2. drawdown behavior of the well over 100 days of continuous pumping (as

reflected by the specific capacity at 100 days); 3. available drawdown in the well; and 4. other factors (e.g. well interference, aquifer mining, water quality).

MWLAP suggests extrapolation of drawdown to 100 days because recharge of the aquifer is assumed to occur annually after 100 days, with winter rains or spring snow melt (Kohut’). The 100 day drawdown is estimated by projecting the drawdown from the pump test data to 100 days on the logarithmic scale. The 100-day drawdown projection is presented on Figure 4.

Kohut- Kohut, A.P., Hodge, W.S., Johanson, D.A. and D. Kalyn, 1984. Natural Seasonal Response of Groundwater Levels in Fractured Bedrock Aquifers of the Southern Coastal Region of British Columbia. International Groundwater Symposium on Groundwater Resources Utilization and Contaminant Hydrogeology, International Association of Hydrogeologists, Canadian National Chapter,Montreal, Quebec, p. 97 - 107.

1

DTC

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. August 10, 3004 Page 5 JO4-00095

The available drawdown is considered to be the height of water between the static (non- pumping level) and the dominant water bearing zones. The available drawdown for the Haase well was calculated fiom the static level of 29.7 m (97.6’) to the water-bearing fractures at 158 m (520’); therefore the available drawdown is considered to be approximately 129 m (422’).

For estimated long-term yield, the maximum drawdown recommended by MWLAP is 70% of the available drawdown or about 90 m (295’) for this well. Therefore 70% of the available drawdown is equal to 120 m (393 feet) below the top of casing. The pump should not be set in the well lower than approximately 122m (400’) below the top of casing, nor should the water level be pumped down below 70% of the available drawdown.

3.5 Results of Pump Test

The discharge rate for the 24 hour pump test was approximately 15 lpm, (3.3 Igpm, 4 USgpm), which is slightly lower than, but very close to the District of Lake Country bylaw of 20 lpm (4.4 Igpm) for a one hour period and significantly higher than the District’s requirement of 2300 litres per day or 1.6 Ipm, (0.35 Igpm) per dwelling unit.

The depth to water at the end of the pumping test was 11 1.2 m (364.98,) below the top of the casing. The drawdown at the end of the pumping test was 81.5 m (267.38’), and approximately 86% of the available drawdown. The projected drawdown at 100 days at the 15 Ipm pumping rate is approximately 120 m (394’). A drawdown of 86% suggests that a 15 lpm pumping rate is higher than the maximum recommended pumping rate for this well.

For the first hour of the pumping test, approximately 900 litres (198 Ig) was pumped from the well with a drawdown of approximately 26.8 m (88’), therefore approximately 63 m (207’) of water remained in the well to 70% available drawdown. This correlates to a volume of approximately 1130 litres (248 Ig) for a potential total of 2030 litres (446 Ig). This volume of water correlates to a potential pumping rate of approximately 34 lpm (7.4 Igpm) for a one hour period, therefore meeting the District of Lake Country requirement of 20 lpm (4.4 Igpm) for a one hour period.

For the duration of the 24 hour pump test, a total volume of approximately 21,600 litres (4,754 Ig) was pumped from the well. This is approximately 9 times greater than the District of Lake Country requirement of 2300 litres for one day production per dwelling unit, therefore meeting the second requirement of the District by-law.

Based on the pumping test results, the well currently meets the District of Lake Country bylaw requirement of 20 lpm for a one-hour period and 2,300 litres per day per dwelling unit.

DTC

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. August 10, 2004 Page 6 J04-00095

Although this well presently meets the District’s requirements for water wells, groundwater resources in the Okanagan region are relatively scarce and should be conserved and protected wherever possible. This well supply should only be used for domestic purposes and consideration should be given to alternative sources for irrigation. We suggest the collection of rainwater for use with yard irrigation. Promoting the infiltration of storm water and surface water runoff into the ground should be considered. Low-flow water fixtures should be considered for use in the house.

Irresponsible use of groundwater such as washing a paved driveway or watering during the hottest part of the day, or leaving a hose run needlessly for extended periods must be avoided. Over-pumping of the well may result in damage to the pump and well and a subsequent reduction in well yield.

4.0 WATER QUALITY

As noted above, a water sample was obtained and submitted to Nonvest Labs for chemical analysis to confirm potability of the well water. A duplicate sample for bacteria analysis was submitted to Car0 Environmental Services in Kelowna. The samples were submitted on July 15, 2004, as indicated on the attached chain of custody, and received at Nonvest Labs in good order in the morning of July 16, 2004, within the recommended maximum holding time of 36 hours for coliform bacteria and other parameters. The results of the analysis were compared to the British Columbia Approved Water Quality Guidelines (BCAWQ) and the Canadian Drinking Water Quality Guidelines (CDWQ).

4.1 Water Quality Results

The chemical analysis results are presented on the attached Table 1, and a copy of the laboratory certificates are attached for reference.

According to the laboratory analysis, the water is of neutral pH, is slightly to moderately mineralised and soft. Manganese slightly exceeded the aesthetic objectives of the BCAWQ and CDWQ. Fluoride and Uranium exceeded the BCAWQ and the CDWQ health-related guidelines. Uranium was reported to be 0.0404 mgL which is twice the recommended limit of 0.02 mg/L in the guidelines. Fluoride was reported to be 6.35 ppm, which is about 5 times greater than 1.5 m g L in the guidelines. Elevated uranium may cause nephritis and other conditions. Elevated fluoride levels may cause dental or skeletal fluorosis. Water treatment (eg. reverse osmosis, distillation) is required to reduce the concentrations of these health-related parameters to acceptable levels, and most methods of treatment will also reduce manganese concentrations, which can cause staining of fixtures and impart an unpleasant taste to water. All other parameters analysed met the BCAWQ and the CDWQ guidelines.

DTC

Page 8: bd Gyvzi g2940, - a100.gov.bc.caa100.gov.bc.ca/appsdata/acat/documents/r7867/OK178_115713063… · drilled to 18 feet in 1965 had a static level of 7 feet below ground, and the

August 10, 2004 Page 7 J04-00095

The turbidity level was reported to be 3.7 NTU, with an aesthetic guideline limit of 5 NTU and a health related limit of 1 NTU. This level indicates the presence of minor suspended solids in the water sample. The turbidity level normally drops with use and a high turbidity is generally associated with higher concentrations of other parameter such as uranium and manganese. Therefore, after the well has been used for an extended period (say 3 months), the turbidity level should drop, as well as the concentrations of dissolved minerals.

Without use of a water softener, long term use of this water could cause some minor manganese scaling on plumbing fixtures.

5.0 CONCLUSIONS AND RECOMMENDATIONS

Based on the results of the pumping test, the well on Lot 15, Plan B-1187, located on Charolaise Drive in Carr’s Landing meets the requirements of the District of Lake Country Subdivision and Development Servicing Bylaw No. 97-139, Section 3.01, Requirements for Wells.

Based on the pump testing information, the well is currently capable of delivering approximately 15 lpm (3.3 Igpm). However, it is recommended that the well not be pumped at a rate greater than 11 lpm (2.5 Igpm) on a long-term basis. This well supply should only be used for domestic purposes and consideration for alternative methods for irrigating should be undertaken. We suggest the collection of rainwater for use in the yard. Promoting the infiltration of storm water and surface water runoff into the ground should be considered. Low-flow fixtures should be considered for use in the house. Irresponsible use of groundwater such as washing a paved driveway, filling a pool, watering during the hottest part of the day, or leaving a hose run needlessly for extended periods must be avoided.

If the well is pumped at a rate beyond its capacity, the long term capacity of the well can be greatly reduced through oxidation of dissolved minerals in the bedrock fractures. The pump can also be damaged if the water level in the well drops to the level of the pump. We recommend a pump setting no deeper than 122 m (400’) below ground to ensure that the well is not pumped below the water-bearing zone and 70% of the available drawdown.

The well water currently does not meet the British Columbia Approved Water Quality Guidelines or the Canadian Drinking Water Quality Guidelines due to elevated concentrations of fluoride, manganese, and uranium. The objectives for fluoride and uranium are health-related, and water treatment is required to reduce these parameters.

The use of a water softener may be required to remove the manganese if the concentration does not decrease after an extended use period. Long term exposure to manganese will cause scaling on plumbing fixtures. A water treatment system (i.e. reverse osmosis, distillation) should be installed for any water used for human consumption.

DTC

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. ~ August 10, 2004 Page 8 JO4-00095

The well should be shock-chlorinated prior to being put into production for domestic use.

We recommend that the well be re-sampled after approximately 3 months of being in production to determine if the turbidity and the concentration other parameters has been reduced in the source water.

6.0 CLOSURE

This report has been preparet, for the exclusive use of Mr. Edgar Haase and is intended to be used by Mr. Haase as part of his submission to the District of Lake Country for a building permit. A copy of this report has been submitted directly to the District of Lake Country office. Use of this report is subject to the attached General Conditions. The reader's attention is specifically drawn to these conditions, as it is essential that they be followed for the proper use and interpretation of this report.

We trust this report meets with your approval. comments, please contact the undersigned.

Should you have any questions or

Yours truly, DEANSTECH CONSULTING

Rich Deans, C.Tech. Groundwater Technologist

DTC

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August 10, 3004 Page 9 J04-00095

Attachments: Figure 1, Site Location Plan Figure 2, Property Plan Figure 3, 100 Day Drawdown Plot Figure 4, Recovery Plot Table 1, Chemical Analysis Results Table 2, Drawdown Data Table 3, Recovery Data Drillers Well Log Plan of Water Well Search and Well Logs Laboratory Certificates of Analysis Site Photographs General Conditions

c: District of Lake Country 10150 Bottom Wood Lake Road Lake Country, BC V4V 2M1

Attention: Ms. Sheila Bridge, AScT.

DTC

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July 2004 Figure 3 JO4-00095

0

20

VJ 40 2

60

3 'El 0 80 3

n

.w

C

E 100

120

140

Figure 3 Well Test Drawdown Data Analysis

Haase Well, Lot 15 Charolaise Drive, Lake Country

1 10 100 I ,000 10,000 100,000 1,000,000 Elapsed Time (minutes)

Haase Well, Lot 15 Charolaise Drive DeansTech Consulting Page 1 of 1

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able 2 1 Sell Drawdown Data 'roject: Haase Well, Charolaise Drive :bent: EdgarHaase I lumping rate: 15 Lpm, 3.3 lgpm

I I I

Drawdown Data

Time Actual

I I

.. - otal pumped 1st hour 900 litres day 21600 litres

werage ratel 15 Ipm

Available ________ Time e ~~~~~ Drawdown Drawdown Drawdown

minutes (feet) (feet) (metres)

(ield requirements: __ !O Iprn over one hour Total well storage 33 Ipm for one hour 1962 litres DOOIpd I 21 600 I litres pumped + 839 litres left in storage = 22439 litres

I I I I

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t

. , DeansTech Consulting

September 14, 2004 1 DeansTech File No: JO4-00095

=e*. I

Edgar Haase i c/o 2215 Charolaise Driv Lake Country, BC V4V 186 i

t Dear Sir:

Re: Water Chemistry Results for Well Test - Lot 15, Plan 23583, Charolaise Road, Lake Country, B.C.

In response to a request by Ms. Sheila Bridge of the District of Lake Country, we are providing the following comments regarding the chemistry of the water in the well on Lot 15. As noted in our initial report dated August 10, 2004, a water sample was obtained and submitted to Norwest Labs for chemical analysis to confirm potability of the well water. The results of the analysis were compared to the British Columbia Approved Water Quality Guidelines (BCAWQ) and the Canadian Drinking Water Quality Guidelines (CDWQ). The chemical analysis results are presented on the attached Table 1.

According to the laboratory analysis, the water is slightly mineralised and is considered soft. Manganese exceeds the aesthetic objectives of the BCAWQ. Fluoride and Uranium exceed the BCAWQ and the CDWQ guidelines. Uranium was reported to be 0.0404 ppm which is twice the recommended limit of 0.02ppm in the guidelines. Fluoride was reported to be 6.35 ppm, which is about 5 times greater than 1.5ppm in the guidelines. All other parameters analysed meet the BCAWQ and the CDWQ guidelines.

The turbidity level was reported to be 3.7 NTU, with a guideline limit of 5 NTU, this indicates the presence of some suspended solids in the water sample. The turbidity level normally drops with use and a high turbidity is generally associated with higher concentrations of other parameters such as uranium, fluoride, and manganese. Therefore, after the well has been used for an extended period (say 3 months), the turbidity level should drop as well as the concentrations of other dissolved minerals.

The well water currently does not meet the British Columbia Approved Water Quality Guidelines or the Canadian Drinking Water Quality Guidelines due to elevated concentrations of fluoride, manganese, and uranium.

The use of a water softener may be required to remove the manganese if the concentration does not decrease after an extended use period. Long term exposure to manganese will cause scaling on plumbing fixtures.

DTC - 10553 Okanagan Centre Road West, Lake Country, B.C. V4V 2H8

Phone: (250) 766-0533 lp Fax: (250) 766-0513 lp Cell: (250) 317-6728 lp e-mail: [email protected]

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, , September 14, 2004 Page 2 JO4-00095

The use of a water treatment system (i.e. reverse osmosis, distilling) is recommended for the removal of uranium and fluoride and other parameters for any water used for human consumption. During discussions with the property owner, he indicated that he intends on installing a distiller to remove unwanted parameters from the drinking water.

We recommend that the well be re-sampled aRer approximately 3 months of being in production to determine if the turbidity and the concentration other parameters has been reduced.

We trust this report meets with your approval. comments, please contact the undersigned.

Should you have any questions or

Yours truly, DEANSTECH CONSULTING

Rich Deans, C.Tech. Groundwater Technologist

Attachments: Table 1, Chemical Analysis Results

c: District of Lake Country 10150 Bottom Wood Lake Road Lake Country, BC V4V 2M1

Attention: Ms. Sheila Bridge, AScT.

DTC

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, * .

Sample Location

Deptb Parameter I T N t s IIetals Extractable

ksenic Barium Boron C:a&niunl C Z l r O m i u m Cbpper [ran Lead \ Langnnese Jodiuni mg/L t',,nium mdL Zinc mgIL \Iicrobiolo,oicnl .hairsis rota1 c o ~ ~ ~ ~ hE'N/100ml Escherichia coli nIPNl1Ooml Heterotrophic Count-Aerobic hLPN1nd Plirsical and .4Ew<gate proper tic.^ Zolou rubidit?.

colour units NTIT

remperatwe Y' Roritirrc Water ?H LMoride mgIL Fluoride mgIL Wtrr te - N mgIL

Sulphate mglL rotdl -malini* mglL Total Dissolved Solids mg/L Hardness ntglL

White - N mgIL

Notes:

TABLE 1 Chemical Analysis Results - Haase Well

Lot 15, Charolaise Drive Lake Country, BC

August, 2004 504-00095

Haase IVell -b;ll?.tical Lot 15 Detection

640 feet I Limit

0472 0.0002

0.0004 0.005 0.015

0.00007 0.00 I4 0.001 ii. 1

0.0004 0.055

135 0.0404

w------*-.

0.007

I I

90

7 3.7

0.0u5 o .inji12 o .i)oo2 o.uoi 0.002

0.00001 0 . i m j 0.00 1 0.01

0.0001 0.005 0.4

0.0005 0.001

I I I

I .o il. 1

0.5 0.05 0.1

0.05 0 .2 5.0 I .0

Concentration CDWQ Guidelines

0.1 0.2*

I 0.3

0.05 200

i

15 5

6.5 - 8.5 250

5Oil

500 -

0.006 0.025

I 5

0 .iJ05 0.05

0.01

0.02

I I

500

1.5 IO I

BC;lWQ Guidelines

9.2*

I 0.3

0.05 200 20**

i

6.5 - 8.5 250

5iJiJ

5 00 - ing L - milligrams per Litre

NTU- nephelometric turbidih unit MPN- most probable number

- less than the anal?.tical detection limit MAC- niaxhiiuni acceptable concentration

IMAC- interim rnasiiniilu acceptable concentratiou CDWQ- C'anadian D n n h g Water Quality Guidelines. Health Canada. (1996).

BCAWQG- British Columbia Appro\rd Water Quality Guidelines. 1998 Edition. updated August 24.2011 I r-*-------e----- Bold - Indicates parameter exceeds the CDWQ Guideline B o d e r -1Indicates parameter exceeds the BCAWQ Guideline

b-------*-----r-,

* - indicates objective concentration after treatment ** - indicates objective concentration for low sodium diets

0.006 0.025

I 5

0.005 0.05

0.01

0. I

1.5 I O

-

Page 16: bd Gyvzi g2940, - a100.gov.bc.caa100.gov.bc.ca/appsdata/acat/documents/r7867/OK178_115713063… · drilled to 18 feet in 1965 had a static level of 7 feet below ground, and the

y 2 in ter ior mea

September I O , 2004

Sheila Bridge, AScT District of Lake Country Engineering Department 101 50 Bottom Wood Lake Road Lake Country, B.C. V4V 1K3

Dear Ms. Bridge:

Re: Well Test - Lot 15, Plan 23583, Charolaise Road, Lake Country, B.C.

Further to your letter dated August 17, 2004, and the attached Deans Tech File Number J04-00095, dated August 10, 2004, this office has no objections to the proposal provided that:

1. An adequate water treatment system is installed and maintained in good working order and is proven to make the water potable.

2. The requirement for water treatment to make the water potable should be protected by a restrictive covenant.

Please forward a copy of the well test report to the B.C. Ministry of Water, Land and Air Protection so that this valuable information can be entered into their water well database.

Call 868-7860 for more information

Sincerely ,

Public Health Inspector

GO: cv

BUS: (250) 979-7665 Fax: (250) 868-7760 Web: interiorhealth.ca

PUBLIC HEALTH INSPECTIONS 1340 Ellis Street, 2nd Floor

Kelowna, BC, V I Y 9N1