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■ ■ SIEGFRIED ILN1rjLWjifM11K1W-jLGjVi1 To: Michael Kith, REHS From: Paul Schneider, P.E. Date: 11 /8/2020 Re: Sanitary Sewer Design and Operational Parameters (Michaels TI's, formerly E&E Trading) SR0082950, SR0080748 I. Introduction Our office has been retained by 011iix, LLC (Owner) to prepare a design report and to document the design and operational parameters for the proposed changes to the sanitary sewer system for the Michaels TI's, formerly E&E Trading. In this report, we refer to the San Joaquin County Onsite Wastewater Disposal Standards dated January 2017 (County Disposal Standards), II. Average Daily Flow (ADF) -Peak Use The Average Daily Flow was calculated as follows: Assumptions: 1. 8 hours per shift 2. 3 shifts per day (300 first shift, 300 second shift, 100 third shift) 3. 1 restroom use every 2.172 hours per employee 4. 3.683 uses per shift per employee 5. 2 gallons per use for 60% of the uses as toilets and 1.25 gallons per use for 40% of the uses as urinals Assume 60% of uses are toilet uses and 40% of uses are urinal uses yielding Where: 3.683 uses per shift per employee * 0.6 " 2.0 gal per toilet use = 4.42 gal per shift per employee (4.42 gpd) 3.683 uses per shift per employee * 0.4* 1.75 gal per urinal use = 2.58 gal per shift per employee (2.58 gpd) 4.42 gal per shift per employee + 2.58 gal per shift per employee = 7.0 gal per shift per employee (7.0 gpd) Toilet Use =Toilet and sink are considered one fixture at 2 gal/use Urinal Use =Low flow urinal and sink are considered one fixture at 1.75 gal/use Stockton San Jose Sacramento Modesto 3428 Brookside Rd., 111 N. Market St., #300 900 Howe Ave, #200 100 Sycamore Ave, #100 Stockton, CA 95219 San Jose, CA 95113 Sacramento, CA 95825 Modesto, CA 95354 t: 209.943.2021 t: 408.754.2021 t: 916.520.2777 t: 209.762.3580 F:\17projects\17017 Holly Sugar Industrial\Civil\Septic Sizing -Prelim\17017 E&E Sanitary Sewer Design Criteria Memo Ver 4.docx