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z Cn PETRALOGIX ENGINEERING 1 M PROPERTY LINE - 550.00' O _ Septic Engineering ---- Design 26675 Bruella Road — Galt — California — 95632 LEACH FIELD 209.400.5729 EMAIL: dlramer®petralogix.com SEE S1 FOR LAYOUT _ _� KEY NOTES REVISIONS BY SITE 0 C 0 � �. z z 0 MINI-MART DD O FAST FOOD z 4100 SF 0 ` D 4 DEMO(E)LEECH FIELD WEST WALNUT GROVE ROAD ��cPWEST WALNUT G V ROAD F_ T-1 s s ' DEMO(E)HOUSE 2 I/ � PROPERTY LINE - 430.00 I 0 Jnr hAnKULUMNE AVE WEST WALNUT GROVE ROAD :Ei Q im 'CoQ CO 0 � M QGVICINITY MAP SITE LOCATION SCALE NTS G SCALE:NTS -_ � O U LU F_ (� a= 0 F-- 0 F-- CL = Z Project:Thornton Plaza Septic Design 1. General Notes 3. Septic Tank 6. Special Inspections w 11-00 Address: 26440, 8874&8925 Thornton Road,Thornton, California Excavation Inspection U) Lo 0 APN: 002-200-02, -77 &-78 A. All plan dimensions must be verified prior to start of work in accordance with A. Septic tanks must be installed on a level,stable base of%"clean crushed rock. -Septic Tanks Install Z � ® 00 = architect drawings. Any discrepancies must be reported to the engineer and B. Septic tanks located in high groundwater areas must incorporate available -Filter Bed Install architect. anti-buoyancy measures to prevent flotation. -Pressurized Squirt Test Prior to Burial 0 Designer: Petralogix Engineering, Inc. B. An changes or unclear portions of this Ian must be brought to the attention of Address: 26675 Bruella Road, Galt, California Y g p p g C. All septic tanks must be installed with watertight risers extending to finished z the engineer before proceeding. grade. Grading of the surrounding soil must facilitate drainage away from the riser. Client: Ramos Oil Company C. This plan set is designed to current codes and is valid for a period not more than D. Septic tank risers must not be located within expected wheel path for vehicle Address: 1515 South River Road, West Sacramento,California three years. traffic. 0 D. All applicable state and local laws and codes must be followed. E. Septic tanks must be installed in a location that provides access for servicing and Architect: K12 Architects, Inc. E. Cleanouts shown on the plans are the minimum number of cleanouts required to pumping. Address: 3090 Fite Circle,#104,Sacramento,California allow for proper maintenance.The contractor/architect may add additional F. Systems must not be installed when moist or wet conditions cause excavation cleanouts as deemed necessary upon approval from the project civil engineer. sidewall or bottom area degradation of soil structure and porosity(appears as Design Basis F. All gravity-fed pipes must be 4-inch Schedule 40 PVC with a minimum 2%slope to smearing and collapse). 2019 California Building Code drain. (2)45-degree fittings and a cleanout must be installed when a step-down is G. Alarms must be installed to indicate sewage backups. 2019 California Electrical Code necessary. PVC primer and cement to be used in accordance with guidelines. 2019 California Plumbing Code G. 90-degree pipe fittings are not allowed from the restaurant to the septic tanks to 4. AX MAX W San Joaquin County Onsite Wastewater Treatment Standards (Jan, 2017) reduce blockages. Petralogix Nitrate Loading Study, dated December 1, 2017 H. Grease trap design to be performed by others. A. Orenco AX Max to be installed per manufacturers recommendations. O Petralogix Septic Permit Review, dated December 1, 2017 I. Backflow preventer must be installed between the junction of the kitchen and restroom connection and before the first septic tank. 5. Sand Mound Z Design Parameters J. Anti-siphons must be installed on backside of the last tank between the last septic Soil Type:Silt/Clay (ML/CL) tank and the Orenco AXMAX. A. Bottom of excavation must be scarified 8 inches in depth prior to backfill San Joaquin County Soil Factor:0.225 K. Maintenance of the system to be performed in accordance with SJC OWTS§1.12. operations. Of Min. Percolation: 27.8 min/in based on P2 Percolation Test Data Maintenance schedule may need to be adjusted to shorter time intervals B. Backfill must be carefully placed to prevent damage to the system or movement of w t depending on actual site usage. the lateral pipes. Approximate Ground Surface Elevation: +12' NAVD88 C. Fasten leach lines with J-hooks or equivalent in a way that the lines do not move z L. Risers must be installed at the end of each lateral to allow for monitoring of each q Y Approximate Groundwater Elevation: +2' NAVD88, as observed December 15, 2017 w High Groundwater Elevation Estimate:+7' NAVD88 line. Caps must be placed on top of each riser. during berm fill placement. ( n Target Retention Time: 1.25 day M. If groundwater is encountered during excavations,contact engineer.Contractor D. All distribution boxes must be bedded on a level concrete base. v must be prepared to install dewatering wells if groundwater is encountered during E. Filter Bed and backfill must consist of poorly graded sand with less than 5%fines Site Use construction. as measured by passing the No. 200 sieve. Average Daily Flow: 6,089 gallons N. Primary septic area designed in accordance with San Joaquin County standards. F. The upper 6 inches sand mound must be capped with 6 inches of silt or clay to Minimum Calculated Tank Capacity: 5,691 gallons per SJC OWTS§4.1.12 0. 100% Potential replacement area defined in plan set in the event additional area is prevent acting as a conduit for rainfall or surface groundwater. Filter fabric such as Actual Design Tank Capacity:8,000 gallons needed. Mirafi 180N or equivalent must be placed between the sand filter and silt/clay Assumed Traffic Load: H-20 or lighter capping layer. Nearest Domestic Well: Unable to Determine 2. Site Preparation G. Observation ports,as approved by the Department, must be installed at the end Domestic Water Supply: City of Thornton of each sand mound laterals. DRAFT Min. Setbacks per SJC OWTS Table 1.5 A. The entire site must be razed of existing site features including structures, H. Perforated disposal field laterals must be flatter than 1 inch of drop per 10 feet. An flatwork,foundations,pipes,dump pits,and all existing septic system features. end cap must be installed on each lateral. Lateral pipe will be rotated so that Equipment B. All rubble and trash must be disposed of offsite. perforations are vertical and discharging towards the infiltrator chamber. (2) Jensen TY4000-EE-ST-6D4W Septic Tanks C. Backfill not within the drainage field must be performed in accordance with the I. Vegetate slopes with drought-tolerant grasses and other BMP's to prevent erosion Orenco AXMAX275 project geotechnical engineer's recommendations. In the absence of of the sand bed filter. SHEET No. (2)PF14520 Recirculation Pumps recommendations, disturbed soil must be scarified, moisture conditioned,and J. Trees are not allowed on the berm or within 10 feet of the footprint. If potential GN(2) PF5007 Discharge Pumps compacted to no less than 90%relative compaction in accordance with ASTM replacement area is implemented,trees must also be removed from the area. Grease Trap design by others D1557.Backfill recommendations for the drainage field area can be made upon K. Disposal field sand mound must be protected from vehicle traffic with secure request. fencing or other equivalent. DATE Anti-Siphon and Backflow Preventer 9/2/2020 SCALE AS NOTED DRAWN DD i JOB 2020-00028