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Ted Tasiopoulos [EH] <br /> From: Cort Abney <cort@h2oengr.com> <br /> Sent: Tuesday, May 09, 2017 1:16 PM <br /> To: Ted Tasiopoulos [EH] <br /> Subject: LBA OWTS Proposed Design Changes <br /> Hi Ted, <br /> We have coordinated with LBA and aske�ey refine their employee numbers and activities. According to the <br /> owner, the maximum employee count i 45 sons per day at the facility. We have also been informed that facility <br /> operations will be no more than 12 hours per day, thus effectively allowing system cycling without active dosing. <br /> As such we are updating our proposed design and calculations, as follows: 3 ZOU <br /> (i) The proposed sy.Uam will be an in-ground, gravity filter bed desi of 40'W0' L,a suming a Filter Bed <br /> Soil Factor .75; <br /> (ii) Distribution pipe spacing of 8'o.c.; and <br /> (iii) Septic tank capacity of at lea ,0 0 gprrf. <br /> The 40'width provides 5'setback from both the property line (east) and pavement(west). <br /> We would also like to request that the bottom of the bed (filter media) be located at 48" -52" depth from ground <br /> surface, as the soil at this depth has less silts and clays than at 42", as tndicated by the field data (23.1 minutes per inch <br /> vs 34.7 minutes per inch). It is possible to cut down the ground surface, but we don't want to create a low area that <br /> may collect runoff. <br /> If these design criteria are acceptable, we will proceed with the design and submit for your review. <br /> Cort Abney, P.E. <br /> SHORELINE Environmental Engineering <br /> 4120 Cameron Park Drive, Ste. 100-A <br /> Cameron Park, Ca 95682 <br /> (916)806-3970 <br /> cort@h2oengr.com <br /> t <br />