Prepared for RICHARD CHAPMAN & ASSOCIATES 264 Westminster Avenue West PENTICTON, B.C. V2A 1J9

Transcription

1 Prepared for RCHARD CHAPMAN & ASSOCATES 264 Westminster Avenue West PENTCTON, B.C. V2A J9 Prepared by PACFC HYDROLOGY CONSULTANTS LTD West Broadway VANCOUVER, B.C. V6J 23 MARCH 26, 993

2 i E. LVNGSTON. P. EN. A. BADRY PACFC HYDROLOGY CONSULTANTS LTD. CONSULTNG GROUNDWATER GEOLOGSTS March 26, 993 Richard Chapman & Associates 264 Westminster Avenue West PENTCTON, B.C. V2A J9 Attention: Subject: Dear Si rs : Mr. Richard Chapman WEST BROADWAY VANCOUVER, B.C. V6J 23 TELEPHONE: (604) Proof of Water for a Proposed Subdivision of Part of the Basil Property East of the City of Penticton Richard Chapman & Associates File 528 Thi s etter i s further to recent telephone di scussi ons between Mr. Richard Chapman of Richard Chapman & Associates and Ann Badry, P. Geo., Hydrogeologist of Pacific Hydrology Consultants Ltd., and it is in reply to your (Richard Chapman) letter of November 27, 992 concerning the above-mentioned proposed subdivision of part of the Basil Property east of Penticton..O NTRODUCTON From the aforementioned communication, we understand that the present subdivision proposal calls for creating a 44.5 hectare (0* acre). parcel consisting of that block of land comprising the northwest part of the Residue of Sub Lot 7, D.L. 270, Plan 89, S.D.Y.D., of the Basil Property east of the City of Penticton. The boundary of the subject parcel is shown on Figures _, 2 and 3 in Appendix A.

3 Richard Chapman & Associates Proof of Water for a Proposed Subdivision of Part of the Basil Property East of the City of Penticton March 26, Page 2 The proposed source of water for the subject lot to be created by the subdivision is a well. R.D.O.S. Bylaw No. 300 defines "Proof of Water'' for groundwater suppl i es as fol ows : (b) Groundwater Supplies ( i) For any proposed subdivision dependent upon individual groundwater sources of water for each parcel, the developer shall provide, on each. parcel, prior to registration of the subdivision: in Electoral Areas A, E, C, D, E, F and G, a well capable of providing a minimum yield of three (3) gallons (23.5 L) per minute for each proposed parcel; and in Electoral Area H, a well capable of providing,000 gallons (4545 L) per proposed parcel per day; O R a detailed investigation report of groundwater conditions sufficient to evaluate water quality and the chances of constructing successful wells, which meet the above yield requirements, on all the parcels within the subdivision. This letter-report has been prepared to fulfil the alternative of ''a detai ed investigation report...'. Background i nformati on concerning previous subdi vi si ons i n the subject area is contained in the following: i. A letter-report dated December 30, 98, from Pacific Hydrology to Pinewynds Development, on the subject "Groundwater Supply for Subdivision Residue S.L. 7, D.L. 270, SDYD, Plan 89". 2. A letter dated October 20, 98, from Pacific Hydrology to Pinewynds Development, on the subject "Groundwater Supply for Subdivision".

4 Richard Chapman & Associates Proof of Water for a Proposed Subdivision of Part of the Basil Property East of the City of Penticton March 26, Page 3 3. A letter-report dated September 25, 990, from Pacific Hydrology to Realty World - Locations West Realty nc., on the subject "Proof of Water for the Proposed Basil Subdivision of Sublot 7, D.L. 270, Plan 89, S.D.Y.D., Except Plans 2329, 26390, 28957, 3444, 3786 and 32942". 4. A letter-report dated April 26, 99, from Pacific Hydrology to Richard Chapman & Associates, on the subject "Proof of Water Concerning the Proposed Subdivision for Lot 6, D.L. 270, Plan KAP44266, S.D.Y.D.". 5. A letter-report dated July 4, 992, from Pacific Hydrology to Richard Chapman & Associates, on the subject "Proof of Water Concerning Two Proposed Subdivision on Sub-Lot 7 of D.L. 270, East of the City of Penticton". 6. A letter-report dated March 26, 993 from Pacific Hydrology to Richard Chapman & Associates, on the subject "Proof of Water for a Proposed Subdivision of Part of the Basil Property East of the City of Penticton". The di scussion contained in thi s etter-report does not repeat general comments about groundwater geology and groundwater supply in the subject area, as these issues have previously been thoroughly discussed in the reports listed above. 2.0 GROUNDWATER GEOLOGY AND GROUNDWATER SUPPLY One new additional well record in the area has been added to the summary table contained in our most recent letter-report of July 4, 992; this table, which has been updated, is included, for easy reference, with this letter-report as Appendix B. The record of the new well (No. 5 in Table ; Page B - 4, is for that of a well drilled at the Basil Residence in August/September 992; the informati-on provided by the driller for this, >

5 Richard Chapman & Associates Proof of Water for a Proposed Subdivision of Part of the Basil Property East of the City of Penticton March 26, Page 4 well is consistent with the results expected, in that the overburden is thin and the aquifer underlying the site is bedrock. The very high estimated capacity of the we by the dri i ng contractor confirms earl i er conclusions that the bedrock aquifer is locally capable of yielding quite high capacities to individual wells. Again, as has been previously discussed, an occasional we may not i ntersect suff i ci ent water-beari ng fractures at a particular location to provide an adequate domestic water supply. However, under the prevailing condition and very large lot size, it is a simple matter to drill a second well, if required. At this time, no unsuccessful wells are known in the area but future drilling may show that conditions are not everywhere suitable for an adequate domestic well. 3.0 SUMMARY The proposed new large lot to be created by the subject subdivision is located in an area where the gneisses and schists of the Shuswap Group of Rocks have been shown by the drilling of at least fifteen water wells to contain intense fracture networks that result in wells of more than adequate capacity as domestic water sources. All things considered, we are confident that a well of suitable capacity can be developed on the lot to be created by the proposed subdivision. As has been previously di scussed, groundwater from rock we s i n the subject area can be expected to be fairly hard and moderately mineralized but generally acceptable for domestic uses. Since elevated fluoride is known to occur in the same sequence of rocks further north, it is probably advisable, before consuming the water, to confirm that the fluoride from any particular well is not excessive. Slightly elevated fluoride content in water is not of particular concern to healthy adults but it should be taken into account if the water is to be consumed by infants and small children.

6 Richard Chapman & Associates Proof of Water for a Proposed Subdivision of Part of the Basil Property East of the City of Penticton March 26, Page 5 We trust that this letter contains the information you require. However, please do not hesitate to call if you wish to further discuss any aspect of the contents of the letter-report or attachments or if we can be of further assistance with subdivision approval. Yours truly, PACFC HYDROLOGY CONSULTANTS LTD. b Ann Badry, P. Geo. Hydrogeol ogi st At t ac hmen t s

7 APPENDX A AREA AND WATER WELL LOCATON MAPS AND SUBDVSON LAYOUT PLAN

8 ..: l a FGURE Votes: AREA LOCATON MAP - S.L. 7 OF D.L. 270 EAST OF PENTCTON. B.C.

9 FGURE 2 WATER WELL LOCATON MAP - S.L. 7 OF D.L. 270 EAST OF PENTCTON, B.C. 8' jr - rlotes: '. outlines the subject Basil Subdivision; scale of base map " :7,000.

10 FGURE 3 BASL SUBDVSON LOT LAYOUT 35: Plkn provided by Richard Chapman and Associates (528). reduced from ~0000 to a scale of approximately 4 )) outlines the subject lot. *3000.

11 APPENDX B SUMMARY OF DRLLED WATER WELLS N THE AREA OF SUB LOT 7, D.L. 270, S.D.Y.D..i,

12 . Sumnary of Details Abwt Water Wells in the Area of the Basil Property East of Pentictm Static Water Driller s Estimate mpowner's Name Year of Well Depth Level or [Tested] Capacity Remarks NO, (Location) Completion m (ft) m (ft) L/sec (igpm) \) Pinewynds (Lot 7, Plan 3)2&) h4ci4s3 3aw2 2) Pinewynds (Lot 6, Plan 4l766) w,/3sr 7a (380) 6.59 (2.62) [0.3+] [(4.2+)] (240) 6.48 (2.25) [0.6+] [ (8.3+)].8. m (6 ft) of till over bedrock; 6. m (20 ft) of 50 mm (6!') diameter casing into solid bedrock; lined with 00 mn (4") diameter slotted PVC casing. 6. m (20 ft) of till over bedrock; 6. m (20 ft) of 50 mm (6") diameter casing; lined with 00 mm (4") diameter slotted PVC casing. 33 T. Booth (Lot 3, Plan 3786) rn ss (390) 73.5 (24) 0.95 to (2.5 to.4 5) 3.35 m ( ft) of till over bedrock 4.9 m (6 ft) of 50 mm (6" diameter casing; perforated liner. 4) R. Hamilton (?) (Lot 7, Plan 32942) bjw5/8?2 3 0.J. Martin (Lot 2, Plan 26390) rnbs (64) 30.5 (00) 0.6 to (8 to O) m (2 ft) of soil over bedrock 3.35 m ( ft) of 50 mn (6" diameter casing seated in the bedrock; lined with 00 mn (4") diameter slotted PVC casing (80) 4.0 (6) m (40 ft) of till (?) over bedrock; 2.2 m of 50 mn (6") diameter casing to bedrock; lined with 00 mm (4") slotted PVC casing.

13 :Lot 0, Plan =7? (29) 35. (5)

14 !?&nary of Details About Water Wells in the Area of the hw Owner s Name Year of Well Depth P*tLoca tion) Completion m (ft) ti. Wankel (200),ot 8, Plan 32942) bfl 63q 6)C. Clubine (332) -ot 3, Plan 32942) 83is- y?,b. Byard (20) -ot 2, Plan 32942) L-J-w kr349 4.& A. martin? 93.0 (305) -oc O, Plan 32942) l-/w g3ss Sharp (202),ot, Plan KAP 46 9 ) dl (28)? Flowing

15 -- -- simm ary of Deb s About Water Als in -8 Area of the Basil Property East of Penticton (cont'd) Owner's Name Year of Well Depth (Location) Completion m (ft) Static Water Driller's Estimate Level or [Tested] Capacity m (ft), L/sec (igpm) 4 L. Murray (Lot 2, Plan 32942)./-M U3Yl (00)? (0.3 (<3) (Residue Sub Lot 7, Plan 89) b32r (320) 67.7 (222) 2.27 (30)