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7. Check the water level in the surge dosing tank. 8. If necessary, add water to the tank with a hose to ensure enough water is available above the Redundant OFF float(minimum of 6 inches)to complete the drawdown testing. (CAUTION: Do not leave the tank unattended while adding water with the switches in the OFF position. If the tank is over-filled,it could compromise the integrity of the tank.) 9. When the water level is high enough,turn the hose off and remove it from the tank. 10. Measure the water level in the tank by lowering a dry wood board(1 inch x 2 inches)down through the water to the interior bottom of the tank.Be sure to keep the board in a vertical position for accuracy. 11. Remove the board and measure the wetted length to the nearest 1/8-inch. (Conducting the test on a warm day will ensure enough heat or sunshine to dry the board between measurements.) 12. An alternate method involves using a steel tape measure to measure down to the water surface from a consistent reverence point(e.g.,top of riser). 13. Record this measurement as the"starting depth." Go to the control panel and move the switch for Pump 1 to MAN(manual or hand). 14. Use a stopwatch and run the pump for a fixed period of time(e.g., 6 minutes,0 seconds is equal to 0.1 hours on the ETM). 15. Measure the water depth in the tank and record it as the"ending depth." 16. Subtract the ending depth from the starting depth to calculate the depth of water pumped,in inches. 17. Multiply inches pumped by gallons per inch to get gallons pumped.Verify this value against the flow meter(if present)when calibrating the drainfield pumps. 18. Divide gallons pumped by minutes pumped to get gallons per minute. Gallons per minute can be multiplied by 60 minutes per hour to get gallons per hour. 19. Refill the tank as described previously and repeat for each additional pump. 20. Record raw data in the "notes" section on Form 5. 21. Record the final results in the appropriate spaces on Form 3. 22. Open the low pressure gate valve and replace and secure all lids. 23. Return all HOA switches in the panel to the AUTO position. 24. Record the meter readings at the end of the calibration testing on Form 2. 25. Compare the stopwatch times with the amount of time registered by the ETMs to check relative accuracy. 10.0 SAMPLING AND ANALYSIS The Sampling and Testing Worksheet(Form 6)is used to record laboratory results. It is recommended to collect and analyze septic system effluent samples on a regular scheduled basis as required by the permit and outlined on Table 1.A"grab" sample represents the simplest and easiest form of sampling. Sampling may be conducted by a representative from a private laboratory or by a representative from the facility. In either case,the laboratory should be notified in advance for scheduling purposes and to obtain CES-Albany,OR St.Innocent Winery and Tasting Room 0&M Manual Doc:2018240028 St.Innocent Winery OM BTR May 2018 I Page 8