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Soil Suitability / Nitrate Loading Study 1�erracon Ripon Winery Proposed Warehouse ■ Ripon, CA January 20, 2017 ■ Terracon Project No. NA167059 Leach Leach Seepage Address Date Permit Tank Size Line Line Pits/Sumps (Gallons) Quantity Length (Quantity, (Feet) Size) Wine Tasting Room 1965 19833 800 2 50 --- Residence 1968 68-69 --- ----- --- 1-48"x25' Residence 1968 68-375 800 1 30 1-48"x25' Scale house 1969 69-562 800 1 80 --- --I-----.---- -– – ---.. -- Admin office expansion 1971 71-902 1,600 2 100 -- Scale house 1972 72-156 1,200 1 80 G -- _ ------ –— — -- - ra P e Test Station 1972 72-158 1,200 1 80 -- Winery Office 1972 72-449 1,800 2 100 Winery Warehouse 1972 72-454 1,200 1 80 Shop 1972 72-605 1,200 1 100 – Trailer Court 1973 73-724 1,200 2 80 Trailer Court Court 1973 73-876 1,200 3 80 --- Winery Bottling Room 1974 74-124 1,200 3 70 --- Trailer Court 1974 74-295 1,800 2 100 --- Office 1978 78-656 2,400 3 60 3-2'x10'x10' SR003999_7 _ Lab Office 1998 SR0042574 31000 2 40 4-25'x5'x5' SR0016886 17000 E Highway 120 2002 SR0032110 2-2,000, 8 80 1-1.200 Based on a review of the EHD permits, the septic systems in the area appear to utilize standard leach lines, and/or seepage pits. Leach lines are between 40 and 100 feet in length and seepage pits are between 10 and 25 feet in depth. 1.3.6 Septic Repair Permit History in the Vicinity Based on the EHD file review, septic repairs in the vicinity appear to be for replacement of septic tanks and the addition of leach lines and/or sumps. The septic repair permits can be found in Appendix C of this report. 1.3.7 Expected On-Site Maximum Septic Tank Usage In response to a SSNLS Questionnaire, Mr. Kevin Baskin indicated the proposed new building restroom will be open 5 days per week; 24 hours per day year round. There will be up to 30 permanent employees working three eight hour shifts per day (10 employees per shift) and up to 16 visitors daily anticipated. The restrooms will consist of six sinks and six low-flow toilets. The septic system design should be based on the San Joaquin County On-Site Wastewater Disposal Standards or other engineering recommendations. Based on a useage of 15 gallons per person per 8 hour shift as specified in San Joaquin County EHD Onsite Wastewater Disposal Standards and the proposed usage, the facility can have a maximum daily usage of 378 gallons per day(15 Responsive■ Resourceful ■ Reliable 6 ,