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Table 4—Oil Containers (continued) Fresh product; 55 each Misc. Gear Single-wall Maintenance Shop AGT 8 max 3 & Lube Oil w/20° basin Area Waste product; 55 each Single-wall Maintenance Shop AGT 9 max 3 Used Filters w/2nd basin Area Mobile Diesel Supply; Single-wall stored Maintenance AGT 10 75 Diesel w/2nd basin Shop Area Underground Storage Tanks There are no underground storage tanks present at this facility. Total Storage capacity: 17 500 gallons. See Figures 1 and 2 for the location of the storage tanks and general arrangements of the facility. Also provided on these figures are storm water drain inlets and flow (slope) directions of rain water(and spilled oil paths). 3.2 Drainage Pathways and Distance to Navigable Waters The Facility is located approximately 6,800 feet east of the San Joaquin River, a navigable water of the state. Water in the river flows to the southwest and west as part of the Sacramento-San Joaquin Delta and ultimately discharges into San Francisco Bay and the Pacific Ocean. Interstate 5 is located between the Facility and the San Joaquin River and any potential releases at the facility would not drain to this water body. Stormwater generated on-site flows with gently sloped grading toward curb cut spillways leading to three separate storm water retention ponds(Figure 2). Drain inlets are located at the low points of Retention Ponds 1 and 2 (Pond 3 drains to Pond 1). Isolation valves are located at the existing drain inlets to control stormwater flow to the City of Lathrop Stormwater Drainage System. Antonini Enterprises, LLC does not have a valve key for the storm drain valves and must contact the City of Lathrop to operate the valves. Floor drains located within the Wash Rack Area drain to an oil/water separator (on the south side of facility). The separator is cleaned out periodically to remove oil/grease and sediment. The water from the separator is discharged to the City of Lathrop Sanitary Sewer System under a separate industrial wastewater use permit(Wastewater Discharge Permit#2012-1). 3.3 Discharge History (40 CFR 112.7(a)) There have been no known spill events at this facility. Antonini Enterprises has not discharged a reportable quantity of oil in an amount considered harmful(more than 1,000 gallons of oil in a single discharge or more than 42 gallons in each of two discharges in any 12-month period). -9-