April 26, 2017 DTC File No: J Re: Sewage Dispersal Inspection/Assessment and Filing for 7110 Westside Road, Kelowna, B.C.

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1 DeansTech Consulting Ltd. April 26, 2017 DTC File No: J Interior Health Authority 1340 Ellis Street Kelowna, BC V1Y 9N1 Attention: Dear Sir: Public Health Inspection Re: Sewage Dispersal Inspection/Assessment and Filing for 7110 Westside Road, Kelowna, B.C. DeansTech Consulting Ltd. (DTC) was retained by Mr. Dan Gould, P. Eng. for CH2M, to assess the above noted property. DTC understands that the Ministry of Highways is widening Westside Road and has acquired a portion of the subject property. DTC s scope of work was to review the new property boundaries, cut slope areas and provide feedback on potential impacts to the existing dispersal system and mitigations to reduce the potential for effluent breakout on the cut slope. DTC visited the site on March 22, 2017 to locate the septic tank and dispersal laterals. A camera/transmitter was inserted into the distribution box to locate the dispersal area. Once DTC confirmed the dispersal lateral locations, testpits were excavated to observe the condition of the dispersal system and to record soil descriptions. The existing sewage system consists of a 900 Ig two chamber plastic septic tank and a seepage bed that measures approximately 10 by 43 feet. Two testpits were excavated adjacent to the seepage bed to examine the condition of the drain rock and surrounding soil. The seepage bed appears to be in good functioning order. The drain rock and surrounding soils were clean and there was no visible biomat in the drain field. Based on information received from Interior Health regarding the sewage system permit, the system was installed in May Based on the location of survey stakes on the property, the proposed cut slope line will run through the centre of the existing dispersal system seepage bed, therefore the dispersal field will have to be relocated on the adjacent property to the south. The existing septic tank will also have to be replaced or relocated if possible. The tank can remain in place during construction of the roadway and it will have to be pumped of contents on a regular basis so that effluent does not enter the existing seepage bed. A high water level alarm should be installed in the existing tank to warn of the need for pumping. Alarm level should be set at 12 below the outlet level. The outlet pipe should be capped during this time period. An additional testpit was excavated on the property to the south and within the proposed new dispersal area. A new sewage system is necessary, the remainder of this report contains the required information for filing an application for a sewage dispersal system DTC Okanagan Centre Road West, Lake Country, B.C. V4V 2H8 Phone: (250) þ Fax: (250) þ Cell: (250) þ deans1@shaw.ca

2 April 26, J on the above noted property. It appears feasible that a gravity sewage system could be installed on the adjacent property to the south which would implement the use of a new septic tank, an Ecoflo treatment unit and a deep installation seepage bed. This would allow for the proposed road cut to be constructed without a retaining wall adjacent to the roadway. Type 2 effluent is required and a deep seepage bed to help reduce the potential for effluent breakout on the cut slope. By installing the bed deeper in the ground the horizontal distance to the road cut is increased thus reducing the risk of breakout. The underlying soil consists of clean sand with some gravel allowing the treated effluent to move in a downward direction, which also reduces the risk of effluent breakout on the slope. We estimate the cost to replace the sewage system to be in the order of $30,000. This includes reporting, design and permit from Interior Health and installation of the new system. Pumping of the existing septic tank during construction of the roadway would likely be in the range of $2000 to $5,000 depending on the number of times the tank needs to be pumped. We suggest the new sewage system be installed after the road cut has been completed to avoid potential damage to the system from working in the area. New Sewage System Design Information The existing house has 2 bedrooms and is 1500 ft 2 or 140 m 2. The anticipated total daily effluent flow for this application based on Table II-8 of the Standard Practice Manual (Version 3) is 220 Igpd (1000 Lpd) for the two bedroom home. The field assessment was carried out during the week of March 20, Property Size: 0.12 hectares Legal Description: Lot 17, Plan KAP16594, DL3842, ODYD Folio: # General Property Description The property is currently developed with a house at the northwest side of the lot. The lot slopes down moderately to the east & south and based on the existing site topography and house location, the new dispersal field will be located at the southeast portion of the new lot. Geology According to the British Columbia Ministry of Energy, Mines, and Petroleum Resources publication, Bulletin 46, Late Glacial History and Surficial Deposits of the Okanagan Valley, the site is outside the mapping area, however based on DTC s experience, the property has likely been formed of Kame terraces and meltwater channels, which consist of glacial outwash and till deposits. Based on subsurface investigations conducted in the area by DTC, soils encountered typically consist of loamy sand & sand and gravel deposits. DTC Okanagan Centre Road West, Lake Country, B.C. V4V 2H8 Phone: (250) þ Fax: (250) þ Cell: (250) þ deans1@shaw.ca

3 April 26, J Hydrogeology Based on the topography of the area, the property, and local knowledge, the interpreted direction of regional groundwater flow is likely to the east towards Okanagan Lake, which is approximately 325 m east of the proposed sewage system location. Based on the location of the site the groundwater level is likely 10 s of feet below grade. A water well search of the BC Groundwater Data Base was carried out and the nearest offsite well appears to be approximately 400 metres from the proposed dispersal field area. A copy of the well map is attached for reference. Field Results Three testpits were excavated for this assessment in and around the proposed dispersal field area. The soils were logged by DTC on March 22, The soil observed in the testpits excavated in the proposed new sewage dispersal area typically consisted of a sandy loam to 0.5 feet overlying sand to 8.0 feet. The underlying sand was medium grained, with trace silt, loose and medium yellowish brown. The slope in the proposed dispersal area was measured to be 30%. Three percolation tests at 2 feet below grade produced results of 2.0 & 2.5 min/inch. Based on these results and the soil type a soil hydraulic loading rate of 1.02 Ig/ft 2 /day (50 litres/m 2 /day) for Type 2 effluent has been implemented. The attached Figure 1 shows the testpit and percolation test locations and results, and Figure 2 outlines the proposed sewage dispersal field layout. Site Investigation Summary: Soil Texture sand, Soil Structure single grain, Percolation Rate 2 minutes/inch (average), Slope down gradient 30%, Depth of porous soil 96, Coarse gravel content < 20 % Site Capability and System Type The results of the field investigation were compared to Tables II-10 to II-21 of the SPM Version 3, Volume II to identify soil type, constraining factor and system solution. Based on the information from these tables, the soil type category is sand having a good permeability. The recommended system solution for the site is gravity distribution. DTC proposes a gravity distribution system to a deep seepage bed using Type 2 effluent. During the design stage for any sewage disposal system, the determination of a linear hydraulic loading rate (LLR) is necessary in order to determine the minimum system DTC Okanagan Centre Road West, Lake Country, B.C. V4V 2H8 Phone: (250) þ Fax: (250) þ Cell: (250) þ deans1@shaw.ca

4 April 26, J length along a contour. Based on the calculations, a minimum length of 12 ft would be required and will be met. System Design DTC proposes the installation of a gravity system using Type 2 effluent to a deep seepage bed. DDF (Daily design flow): DDF is selected as per SPM table II- 8 for a 2 bedroom residence with 140 m 2 living area, a house size of up to 240 m 2 is allowed for maximum floor area: 1000 L DDF Tank Size 1000 L x 3 = 3000 L or 660 Ig minimum, 900 Ig recommended. HLR (Hydraulic loading rate selected for design): The infiltrative surface is sized based on an HLR of 50 L/day/m 2 for type 2 effluent to sand as per SPM Table II- 22. AIS (Calculation of minimum area of infiltrative surface): 1000 L/day 50 L/day/m 2 = 20 m 2 LLR (Linear loading rate and calculation of minimum system length): The minimum system length on contour, based on a LLR of 250 L/m for a 0 < 5% slope, > 90 cm depth of sand with favourable structure category as per SPM Table II- 27 is, 1000 L DDF 250 L/m = 4 m minimum system length System Size: AIS minimum system width is, 20 m m = 10.9 m Configuration of Dispersal System: 1.83 m x 10.9 m seepage bed providing 20 m 2 AIS and an effective LLR of 90L/m that exceeds minimum SPM LLR standard of 250 L/m. With six laterals, 5.45 m long. Summary: The system will include a deep seepage bed with an overall size of 6 feet by 36 feet or 216 ft 2 with 6 laterals of 18 feet for a total drain field pipe length of 108 feet. DTC Okanagan Centre Road West, Lake Country, B.C. V4V 2H8 Phone: (250) þ Fax: (250) þ Cell: (250) þ deans1@shaw.ca

5 April 26, J Construction Details The dispersal field shall be constructed as follows: Please note that this design does not incorporate the use of a garburator or reverse osmosis water filter. No water softener backwash, pool or hot tub drains or roof drains can enter the septic system. No condensate from furnaces, appliances, compressors or any other mechanical device can enter the sewage system. The owner and installer must confirm that the septic tank and dispersal area will be a minimum of 3 metres away from property line and underground utilities. The existing tank must be decommissioned as per the SPM guidelines. The system will include the use of a new 900 Ig two chamber septic tank with an effluent filter (polylok PL122) on the outlet T. Install a high level alarm in the filter of the septic tank outlet. The effluent filter must be fitted with an extension that comes within 1 foot of the access lid. The access lids for the tank must come up to final landscaping grade Install safety screens under the tank lids. The effluent will then flow to an Ecoflo EC P-G Treatment unit. The effluent will then flow to a 6 outlet distribution box located in the centre of the dispersal bed. Speedy levellers must be placed on each outlet line inside the distribution box. Insulate the top of all tanks with 1.5 of expanded polystyrene. Insulate the underside of all lids, risers and irrigation boxes. Excavate the seepage bed 6 ft wide and 36 ft in length as per Figure 2 until the clean sand is exposed on the entire base to a minimum depth of 5 ft. The final depth of the seepage bed will be determined based on the invert elevation of the outlet of the Ecoflo EC unit. The drainrock and piping will be approximately 5 feet below final landscape grade therefore, DTC proposes to add an air venting system to promote oxygen flow through the drain rock (See Figure 3 & 4 for details). Install 2 monitoring wells that extend to the base of the bed. DTC must inspect the base of the bed prior to any backfilling activities. Once the base of the bed has been excavated and has been inspected and approved by DTC, place 6 of clean washed drain rock on the sand. Place laterals of 3 perforated pipe system with a maximum fall of 1 in 50. Install a cleanout riser at the end of each lateral and cover with an irrigation box. Place drain rock over pipe to cover by 2. Place filter cloth over entire drain rock area. DTC recommends Mirafi 135 or 140NL nonwoven geotextile filter cloth. Backfill with excavated soil to final landscaping grade. Slope the soil around the sewage system including the tanks with a minimum of 2% grade to promote stormwater runoff. DTC Okanagan Centre Road West, Lake Country, B.C. V4V 2H8 Phone: (250) þ Fax: (250) þ Cell: (250) þ deans1@shaw.ca

6 April 26, J We recommend the installation of a water meter to assist with determining the daily flow rates and development of a proper long term maintenance plan. 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. Should you have any questions or comments, please contact the undersigned. Please contact the Planner, Rich Deans, before starting construction, to schedule a preconstruction meeting, and to make arrangements for construction oversight, final inspection and system commissioning. In order to obtain a letter of certification, DTC is required to carry out inspections during the installation of the system and can be contacted at to arrange for inspection times. Upon completion of inspections and satisfactory installation, DTC will provide a letter of certification which includes as-built plans and a maintenance program. This portion of the project is charged at an hourly rate. Furthermore, this sewage system must be installed by a registered onsite wastewater practitioner with their installer s certificate. DTC Okanagan Centre Road West, Lake Country, B.C. V4V 2H8 Phone: (250) þ Fax: (250) þ Cell: (250) þ deans1@shaw.ca

7 April 26, J Yours truly, DEANSTECH CONSULTING LTD. Prepared by, Rich Deans, ROWP # 0340 Groundwater Technician Attachments: Figure 1, Overall Site Layout & Testing Location Plan Figures 2 & 3, Dispersal System Layout Plan Figures 3, 4 & 5, Dispersal System Cross Section Testpit Table Waterwell Map Copy of Septic Tank Specifications Copy of Treatment Plan Specifications Owner Location Report General Conditions C: Dan Gould, P.Eng. Project Manager CH2M Dan.Gould@ch2m.com Phone: , Ext DTC Okanagan Centre Road West, Lake Country, B.C. V4V 2H8 Phone: (250) þ Fax: (250) þ Cell: (250) þ deans1@shaw.ca

8 510 TO VERNON - WESTSIDE ROAD No. 138

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13 March 22, J Testpit # Depth (feet) Location North side adjacent to septic field South side adjacent to septic field On adjacent lot to south Percolation Test Result Min/inch TABLE 1 SOIL DESCRIPTION 7110 Westside Road Marzec, Vernon, BC Slope Soil Description, depth in inches Angle (%) % FILL sandy, trace silt, trace organics, damp, loose, medium to dark yellowish brown SAND medium grain, trace silt, trace to some gravel, loose, damp, medium yellowish brown. No groundwater, no bedrock, some minor sand slough % FILL sandy, trace silt, trace organics, damp, loose, medium to dark yellowish brown SAND medium grain, trace silt, trace to some gravel, loose, damp, medium yellowish brown. No groundwater, no bedrock, some minor sand slough % ORGANICS sandy, trace silt, damp, loose, dark yellowish brown SAND medium grain, trace silt, trace to some gravel, loose, damp, medium yellowish brown. No groundwater, no bedrock, some minor sand slough. DTC Okanagan Centre Road West, Lake Country, B.C. V4V 2H8 Phone: (250) þ Fax: (250) þ Cell: (250) þ deans1@shaw.ca

14 Water Resources Atlas Legend Water Wells - All Integrated Cadastral Fabric - TileCache km 1: 4,614 Copyright/Disclaimer The material contained in this web site is owned by the Government of British Columbia and protected by copyright law. It may not be reproduced or redistributed without the prior written permission of the Province of British Columbia. To request permission to reproduce all or part of the material on this web site please complete the Copyright Permission Request Form which can be accessed through the Copyright Information Page. CAUTION: Maps obtained using this site are not designed to assist in navigation. These maps may be generalized and may not reflect current conditions. Uncharted hazards may exist. DO NOT USE THESE MAPS FOR NAVIGATIONAL PURPOSES. Datum: NAD83 Projection: BC Albers Key Map of British Columbia

15 CAN. MODEL STS900D IMP GAL US MODEL STSU1000EH US GAL MAY 2015

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17 4/24/2017 sea Web Query - Owner Location Report Disclaimer Owner Location Report This information is obtained from various sources and is determined as of the specific dates set out in the Assessment Act. As a result, BC Assessment cannot warrant that it is current or accurate, and provides it for your convenience only. Use of this information without verification from original sources is at your own risk. BC Assessment 03:10:25 Report Date: Apr 24, 2017 R epor tt Ime: " PM Folio: For: PA80303 Roll Year: 2017 Roll Number: Area: 19 Jurisdiction: 723 School District: 23 Neighbourhood: WESTSIDE NORTH Property Address: 7110 WESTSIDE RD BC Owner Name: Owner Address: RENATA MARZEC/WALDEMAR # of Owners: 2 MARZEC 7110 WESTSIDE RD N KELOWNA BC ViZ 3V9 Document No: CA PID: Legal Description: Lot 17, Plan KAP16594, District Lot 3842, Osoyoos Div of Yale Land District, Except Plan EPP10332 Additional Owners: No Additional Owners Associated PIDs: hltps:llwww.bconline.gov.bc.cal 1/1

18 DEANSTECH CONSULTING Ltd. Page 1 of 1 SEWAGE DISPERSAL GENERAL CONDITIONS This report incorporates and is subject to these General Conditions. 1. USE OF REPORT AND OWNERSHIP This sewage dispersal report pertains to a specific site, a specific development and a specific scope of work. It is not applicable to any other sites nor should it be relied upon for types of development other than that to which it refers. Any variation from the site or development would necessitate a supplementary assessment. This report and the recommendations contained in it are intended for the sole use of DeansTech s client. DeansTech does not accept any responsibility for the accuracy of any of the data, the analyses or the recommendations contained or referenced in the report when the report is used or relied upon by any party other than DeansTech s client unless otherwise authorized in writing by DeansTech. Any unauthorized use of the report is at the sole risk of the user. This report is subject to copyright and shall not be reproduced either wholly or in part without the prior, written permission of DeansTech. Additional copies of the report, if required, may be obtained upon request. 2. NATURE AND EXACTNESS OF DATA Some data reviewed during this assessment was produced by others and has been relied upon by DeansTech to form opinions of the site. The accuracy of the data reviewed has not been confirmed. Some data was collected from sources readily available to the public. Other data and information was obtained from the client for use in this report. 3. LOGS OF TEST HOLES AND WATER WELL RECORDS The test hole logs are a compilation of conditions and classification of soils and rocks as obtained from field observations and laboratory testing of selected samples carried out by others. Soil and rock zones have been interpreted. Change from one geological zone to the other, indicated on the logs as a distinct line, can be, in fact, transitional. The extent of transition is interpretive. Any circumstance, which requires precise definition of soil or rock zone transition elevations, may require further investigation and review. 4. STRATIGRAPHIC AND GEOLOGICAL INFORMATION The stratigraphic and geological information indicated on drawings contained in this report are inferred from the information reviewed. Stratigraphy is known only at the location of the drill hole/testpit or other drill holes/testpits in the area. Actual geology and stratigraphy between drill holes/testpits and/or exposures may vary from that shown on these drawings. Natural variations in geological conditions are inherent and are a function of the historic environment. DeansTech does not represent the conditions illustrated as exact but recognizes that variations will exist. Where knowledge of more precise locations of geological units is necessary, additional investigation and review may be necessary. 5. SURFACE WATER AND GROUNDWATER CONDITIONS Surface and groundwater conditions mentioned in this report are those observed at the times recorded in the report. These conditions vary with geological detail between observation sites; annual, seasonal and special meteorologic conditions; and with development activity. Interpretation of water conditions from observations and records is judgmental and constitutes an evaluation of circumstances as influenced by geology, meteorology and development activity. Deviations from these observations may occur during the course of development activities. 6. WATER QUALITY Water quality information was based on the results of water samples obtained from the well(s). The chemical analysis results can very from season to season and at different depths within a well. 7. STANDARD OF CARE Services performed by DeansTech for this report have been conducted in a manner consistent with the level of skill ordinarily exercised by members of the profession currently practising under similar conditions in the jurisdiction in which the services are provided. Technical judgment has been applied in developing the conclusions and/or recommendations provided in this report. No warranty or guarantee, express or implied, is made concerning the test results, comments, recommendations, or any other portion of this report. DeansTech