Laserfiche WebLink
Mr.Mike Huggins <br /> Page 2 <br /> August 25,2003 <br /> t the well due to high transpiration requirements of the plants. For this situation, the result of monitoring <br /> would be 0 or no impact. During the winter months however,transpiration from plants will be greatly <br /> reduced; therefore,daily waste water flow may cause excess moisture in the ground and may yield a <br /> sample which would be used in the calculation. The average annual concentration of waste water will be <br /> the basis of evaluation. The water quality monitoring program should begin two(2)months after initial <br /> startup of the system. This time is needed to promote microbe colonies in the treatment pods, grow the <br /> orchard grasses,and tune the settings of the system. Our office and Orenco System will provide service <br /> to tune the system to its optimum performance. Should the disposal field monitoring fail to achieve an <br /> average concentration under 45 mg/L-NO3(or 10 mg/L-N) for a period of two (2)years, an additional <br /> treatment module would be added as needed. This is considered a back up measure. Orenco requires four <br /> (4) service inspections per year of the AdvanTex®Treatment System which is described in the attached <br /> AdvanTex'O&M Manual. <br /> 1 <br /> j The analytical monitoring plan is as follows: <br /> Table 1. <br /> Analytical Tests and Locations. <br /> Inflow AdvanTex Outflow Drip Field Shallow Monitoring Wells <br /> Buried 24 Inches Below the Ground Surface <br /> TN test --- --- <br /> Nitrate --- test test* <br /> Nitrite --- test --- <br /> Ammonia test --- <br /> TKN — test -- <br /> BOD test <br /> TSS --- test --- <br /> pH --- test --- <br /> COD --- test --- <br /> Notes: <br /> t *This test will be the basis of for determining the concentration of nitrate in the effluent. <br /> Monitoring Frequency: <br /> First year monthly monitoring,twelve(12)total. <br /> Second year reduction as warrented,probably no less than four(4)times per year. <br /> jThe drip field details are contained in the attached drawings. The size calculations are attached to this <br /> letter. The system is pressure regulated(between 15 and 45 psi) so the drip emitters will flow 1 gallon <br /> per hour each. There will be 1,321 emitters which will require the disposal field to be"on"for about 20 <br /> minutes per day. During the hot summer months, the grasses over the disposal field may require <br /> supplemental irrigation. All the system settings will be provided in a construction completion letter. <br /> System maintenance and monitoring will be provide by Neil O.Anderson&Associates, Inc,for an initial <br /> 'vEQs a <br /> s <br /> x w <br /> o � <br /> �ssot� <br />