02-24-2020 Council Packet - Laserfiche WebLink

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AGENDA ITEM Prepared By: LLO Reviewed By: Jeremy Barnhart Approved By DJR 1. Purpose. Consider a lot area variance for 200 Bederwood. 2. Background. The City Council originally reviewed this application during their meeting on February 10, 2020. After hearing concerns from the neighbor, the Council wanted additional information regarding the depth of the service line, which the proposed driveway easement would cross. Council directed staff to determine the depth of the line. Mr. Azad owns 200 Bederwood Road (LR-1A, 2 Acres) and an existing 2.08 acre lot to the east (PID 05- 117-23-13-0055, “Lot A”); this lot, considered a lot of record, does not have frontage or access to a public or private road. Mr. Azad proposes to establish a driveway easement through his current lot at 200 Bederwood to provide access to Lot A. 200 Bederwood is requesting a lot area variance to accommodate the proposed driveway easement. 3. City Engineer Analysis: I reanalyzed the information on the sanitary sewer connection to 222 Bederwood as it pertains to a proposed driveway running north of the shared property line with 200 Bederwood. The analysis is based on the Stubbs Bay Sanitary Sewer Improvements Record Plan, February 1992 (Exhibit B). 222 Bederwood is served by a gravity sewer main that runs east-west within 200 Bederwood. That sewer system is PVC and installed in the early 1990s. In conjunction with the sewer main, a sewer stub was installed to serve 222 Bederwood. The stub connects to the sewer main at an elevation of ~940.35. The ground surface at that location at the time of installation was ~951 which indicates 10- 11 feet of soil cover at the connection. A typical stub is brought up to 10 feet below surface immediately next to the main (to get it out of the main trench) placing the stub at about 941. The stub is 42 feet long and it is 28 Feet from the main to the property line. Assuming a slope of 2% (standard for sewer services) the stub at the property line is at 941.6. The surface elevation at the property line is ~ 951 which indicates there is 9.4 feet of soil cover at that location. If for some reason the stub came up at the maximum allowable slope of 12.5%, the service would be at 6.5 feet below the surface, (at the property line). Based on the depths either side of the proposed driveway, there is between 6.5 and 10 feet of cover over the stub. At such depths, the sewer stub should be adequately protected. Should the applicant propose a grading cut over the service line or main, then additional protective measures would be prudent to consider and would be reviewed as part of the building permit grading plan review. The City Engineer has prepared the following recommendations: 1. The homeowner at 222 Bederwood obtain an easement the service line. This would provide the residents at 222 a level of assurance of continued access to the sewer system via this connection. 2. The sewer main, manholes and service line locations along with associated easements be shown on the grading plan submitted as part of the permit review. 3. That a condition of the variance be the applicant provide to the City a utility easement over the sewer main as it crosses the applicant’s property. 4. Staff analysis. The practical difficulties for the variance are supported by staff. The applicant did not create the conditions on either lots located at 200 Bederwood or the rear lot (Lot A). The applicant is Item No.: 9 Date: February 24, 2020 Item Description: LA19-000101, Al Azad, 200 Bederwood Road, Lot Area – Resolution Presenter: Laura Oakden Planner Agenda Section: Planning Department Report