MR. & MRS. HERBERT DAY 5595 Hartnell Road Site 7A - 5, R.R. 8 VERNON, B.C. V1T 8L6

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1 EVALUATION OF WATER SUPPLY FOR A PkOPOSED SUBDIVISION LOCATED NORTHWEST OF THE INTERSECTION OF HARTNELL ROAD AND DAY ROAD, AT VERNON, B.C. Prepared for MR. & MRS. HERBERT DAY 5595 Hartnell Road Site 7A - 5, R.R. 8 VERNON, B.C. V1T 8L6 Prepared by PACIFIC HYDROLOGY CONSULTANTS LTD Boundary Road BURNABY, B.C. V5M 323 JULY 16, 1993

2 EVALUATION OF WATER SUPPLY FOR A PROPOSED SUBDIVISION LOCATED NORTHWEST OF THE INTERSECTION OF HARTNELL ROAD AND DAY ROAD, AT VERNON, B.C. Prepared for MR. & MRS. HERBERT DAY 5595 Hartnell Road Site 7A - 5, R.R. 8 VERNON, B.C. V1T 8L6 Prepared by PACIFIC HYDROLOGY CONSULTANTS LTD Boundary Road BURNABY, B.C. V5M 323 JULY 16, 1993

3 PACIFIC HYDROLOGY CONSULTANTS LTD. Consulting Hydrogeologists Suite 115,2550 Boundary Road, Burnaby. B C Canada V5M 323 Phone (604) Fax (604) July 16, 1993 Mr. & Mrs. Herbert Day 5595 Hartnell Road Site 7A - 5, R.R. 8 VERNON, B.C. V1T 8L6 Subject : Eva1 uati on of Water Supply for A Proposed Subdi vi si on Located Northwest of the Intersection of Hartnell Road and Day Road, at Vernon, B.C. Dear Si rs : This letter is further to telephone discussions between Mr. Klaus Fischer, NRS Block Bros. Realty Ltd. agent for Mr. Herbert Day, and either Ed Livingston, P. Eng., or Ann Badry, P. Geo., Hydrogeologist, of Pacific Hydrology Consultants Ltd., concerning water supply for the proposed Day Subdivision of a parcel of land located northwest of the intersection of Hartnell Road and Day Road near the base of southwest slope of Vernon Hill, at Vernon, B.C. 1.0 INTRODUCTION The purpose of this letter is to present our assessment as to whether a well on the proposed subdivision will provide an adequate water supply that fulfils the requirements of Regional District of North Okanagan Bylaw 726 which states I t...water of sufficient quantity and quality is available year round on or to the proposed lot(s) to satisfy the requirements of this section, and that the extraction of water from the proposed water supply will not deplete the water supply of neighbouring wells and surface water sources.".../2 A member of the STEFFEN ROBERTSON AND KIRSTEN Group of Companies. Olher offices in Canada, U.S.A., United Kingdom and Africa.

4 Mr. & Mrs. Herbert Day Evaluation of Water Supply for A Proposed Subdivision Located Northwest of the Intersection of Hartnell Road and Day Road, at Vernon, B.C July 16, Page 2 The subject Day Property proposed for subdivision comprises approximately five acres (two ha) and is legally described as Section 7, Township 5, Osoyoos District, Plan B1674, Except Plan 16558, Fraction Lots 85 and 86. The area location, regional topographic setting and well locations are shown on Figure 1, in Appendix A; the subdivision layout is shown on Figure 2. Six wells are located in the immediate area; three of these are dug and three are drilled. Records for three of the wells are on file with B.C. Environment; the records for two recently drilled wells were supplied by Dan-Gare Drilling Ltd. The record for one of the drilled wells located 107 m (350 ft) west of the Day Property is not available. Well locations are shown on Figure GEOLOGY AND HYDROGEOLOGY The bedrock geology of the Vernon area is described by Jones (19591, in Geological Survey of Canada Memoir 296, Vernon Map-Area British Columbia. The surficial geology is described by Fulton (1975) in Geological Survey of Canada Memoir 390, Quaternary Geology and Geomorphology, Nicola-Vernon Area, British Columbia. The former indicates that the area of the Day Property is underlain by crystalline rocks of the Monashee Group of the Shusyap Terrain which are transected by a north-northwest trending fault. Fulton's work (GSC Memoir 390) indicates that bedrock in the vicinity of the Property is overlain by unconsolidated gravel deposits, glacial moraine, till and other undifferentiated glacial, fluvial and lacustrine sediments. In general, these units tend to occupy valleys and sl opes whereas bedrock i s more widespread a1 ong ridges and topographic highs. Table 1 (Appendix B) summarizes details of five water wells in the area of the subject Property for which records are available. The locations of the wells (Figure 1) are taken from water well records as well as information provided by the proponent. The two drilled wells indicate.../3

5 Mr. & Mrs. Herbert Day Evaluation of Water Supply for A Proposed Subdivision Located Northwest of the Intersection of Hartnell Road and Day Road, at Vernon, B.C July 16, Page 3 overburden thickness of up to 21.3 m (70 ft) but the wells are completed in fractured bedrock at depths of to m (360 to 365 ft), whereas the three dug wells of depths ranging from 3 to 10.7 m (10 ft to 35 ft) obtain water from a water table aquifer consisting of permeable sand and/or gravel. The Day Property lies along the flank of a west-facing slope which likely serves as a recharge area for the local water table aquifer. Recharge to the deeper bedrock aquifer is from Vernon Hill and other uplands to the east. Regional discharge would be to the west toward Swan Lake and ultimately, Okanagan Lake. 3.0 WATER QUANTITY We1 1 records indicate that the potenti a1 for constructing we1 1 s which are capable of yielding sufficient water for an individual domestic supply are good. Although capacities for the dug wells are not available, they have been supplying water for both domestic and livestock consumption. Drilled Wells 4 and 5 of Figure 1 (and Table 1 ) report capacities of 30 to 38 L/rnin (8 to 10 USgpm) and 2.8 L/min (0.75 USgpm), respectively. These rates will provide sufficient supply for daily consumption; however, bedrock wells with low capacities may require storage to meet peak demand. In the ca.se of low capacity wells, hydrofracturing to extend existing local fractures and to open new fractures can also be considered. On the basis of the foregoing, we conclude that the chance of obtaining a groundwater supply sufficient to meet the daily domestic requirement of at least 5,000 litres (1100 imperial gallons) is good. The nearest well to the subject Property is a dug well at a distance of 90 m (300 ft); this distance is sufficient to preclude interference. Aquifer interference will be minimal owing to the small withdrawal in comparison to recharge for both the water table and bedrock aquifers..../4

6 Mr. & Mrs. Herbert Day Evaluation of Water Supply for A Proposed Subdivision Located Northwest of the Intersection of Hartnell Road and Day Road, at Vernon, B.C July 16, Page WATER QUALITY Well records from the two drilled wells indicate that potable water can be obtained from the bedrock aquifer. Our experience from other bedrock we1 1 s in the region i ndi cates Provi nci a1 dri nki ng water standards for health-related parameters can be met, but that aesthetic parameters may occasionally be exceeded. However, the latter can usually be readily treated with domestic-size treatment units. Water which contains high mineral content is often associated with bedrock wells but experience shows that the B.C. Ministry of Health potability requirements can usually be met. 5.0 CONCLUSIONS ' 1. On the basis of a review of area water wells, in addition to our experience in the area of the subject Day Property located northwest of Day Road and Hartnell Road at Vernon, we conclude there is good potential to develop a well in either the water table or bedrock aquifer which will meet the required daily domestic consumption requirements of Regional District, of North Okanagan Bylaw In the event of a low capacity well, provision of storage capacity may be advisable to provide satisfactory peak demand. 3. Wells in the area produce good quality, potable water. Non-health related parameters such as iron, are occasionally encountered; however, domestic-size treatment systems are available. 4. There will be little or no interference in existing wells from a new well provided that normal domestic consumption prevails. 5. Local and regional recharge to the supply aquifer will be sufficient to meet an incremental increase in withdrawal represented by a new well..../5

7 Mr. & Mrs. Herbert Day Evaluation of Water Supply for A Proposed Subdivision Located Northwest of the Intersection of Hartnell Road and Day Road, at Vernon, 6.C July 16, Page 5 We trust that this letter is adequate to satisfy requirements of Regional District of North Okanagan with respect to water supply requirements for the subject proposed Day Subdivision. However, please do not hesitate to call if you wish to further discuss the contents of this letter or if we can be of further assistance with subdivision approval. Yours truly, PACIFIC HYDROLOGY CONSULTANTS LTD. Hydrogeol ogi st Attachments

8 APPENDIX A AREA LOCATION MAP AND SUBDIVISION SITE PLAN

9 FIGURE 1 AREA AND WATER WELL LOCATION MAP AND REGIONAL TOPOGRAPHY FOR IN AREA OF DAY SUBDIVISION Notes: 1. This base map is prepared from NTS 82 U6. Vernon. at a scale of 1 :50.000: contour interval is 50 feet. 2. C3 - outlines Day Property proposed for subdivision denotes the approximate location of a water well described in Table 1. A - 1

10 FIGURE 2 LAYOUT OF PROPOSED DAY SUBDIVISION ON DAY ROAD AT VERNON. B.C. D I N Notes: 1. Revised from a plan provided by NRS Block Bros. Ltd. and reduced from a scale of 1 :1200 to a scale of about 1 : defines proposed Subdivision. 3. Legal properly descriptmn: Part of Sec. 7, Tp. 5, Osoyoos District, Plan B 1674: except Plan 16558, Fraction Lots 85 and 86.

11 APPENDIX B WATER WELL SUMMARY

12 Table 1. Summary of Existing Water Supply Wells in the Area of the Proposed Day Subdivision Northwest of Day Road and Hartnell Road at Vernon. B.C. Static Well Type Well Depth Water Level Driller's Litholog in (ft) in (ft) Comments (29-35) - A note on water well record states that water has an odour (35) 6.1 (20) 0-35 ft gravel, blue clay, Water available year round rock. for livestock. 3.0 (10) ft gravel. Near creek. 4 Drilled (360) +3 (+lo) 0-54 ft clay and rocks Recommended capacity of 30 to ft bedrock. 38 L/min (8 to 10 USgpm). 5 Drilled (365) ft till Tested by air lift at a rate ft bedrock. of 2.8 L/min (0.75 USgpm). 6 Drilled