9826 7TH AVE SE 2025-03-25 - Laserfiche WebLink

Table 1: Fuel Containers ID Storage Content Description Capacity 1 20,000 gallons Red Diesel Underground Storage Tank 2 20,000 gallons Red Diesel Underground Storage Tank 3 20,000 gallons Unleaded Regular Gasoline Underground Storage Tank 4 20,000 gallons Clear Diesel Underground Storage Tank 5 20,000 gallons Clear Diesel Underground Storage Tank 6 8,000 gallons Not in Use AST -Drained and Capped 7 8,000 gallons Not in Use AST - Drained and Capped 8 8,000 gallons Not in Use AST -Drained and Capped *Note:Nelson Petroleum Inc. leases the property to two delivery trucks. Both trucks are used in transportation-related activities outside the confines of the facility and generally return to the main facility empty for parking overnight. 1.6 Site Drainage Average annual rainfall at the site is approximately 38 inches. Drainage information for the facility is included in Figure 2.The site drainage includes the following infonnation: • Orientation and proximity of buildings, and fueling canopies; • Location of the catch basins; and, • Areas of potential pollutant contact including loading/unloading areas. There is.one covered collection vault(a.k.a.discharge point)located on the central western portion of the Nelson facility identified in Figure 2. The canopied fueling stations have catch basins for storm water runoff and are surrounded by 6-inch berms to direct flow to the catch basins. Surface water generally sheet flows across the sites to the storm drains. All of the catch basins on the operational portion of the property are connected to three oil/water separators, which range between 300 and 1,000-gallons in size, and are located near the southwest center of the facility. The southern located 1,000-gallon separator is connected with the storm drains associated with the Pac Pride fueling system on the eastern site. The northern located 1,000-gallon separator is connected with the storm drains associated with the storage/warehouse and driveway areas, and the 300-gallon coalescing plate separator is associated with the storm drains located in proximity to the bulk fueling area operated by Nelson on the western site. The water flow from the oil/water separators are directed to a central collection in a closed valve box. Water from the closed valve is directed to a 4,500-gallon underground vault which provides secondary containment for the fuel trucks. The water level in the containment vault is visually observed daily, and when it reaches half its capacity it will be periodically pumped manually for disposal in the sanitary sewer at the site.