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<br />UOl()88 <br /> <br />Mr. leon A. Wurl <br />Page Fou r <br /> <br />The City had two samples taken May 29, 1980 and June la, 1980 (see <br />Attachment "B") by Industrial laboratories Co., and Rinehart labora- <br />tories, Inc., respectively, at the locations shown in Figure 3. <br />These tests show that the influent ammonia-nitrogen levels were 12.9 <br />and 23.33 mg/I. I t was assumed that the winter influent ammonia <br />parameter would be 25.0 mg/I at 50oF. <br /> <br />(B) Effluent Standard <br /> <br />Any ammonia level established for Coal Creek would have to relate to <br />low flows in the channel. Additionally, the temperature, pH and flows <br />from the City's discharge would mix with the same parameters in the <br />Creek to reach a mix of allowable in-stream total ammonia nitrogen <br />concentration. Since none of the aforementioned parameters were known <br />for Coal Creek, an assumed discharge of 3 mg/I of total ammonia was <br />considered adequate. <br /> <br />(C) Plant layout <br /> <br />Since so much speculation is involved with the influent and effluent <br />parameters, a specific plant layout could not be determined. Waste- <br />water mayor may not have to be ) ifted on the site to provide for the <br />ultimate treatment train. Cost estimates are, therefore, preliminary <br />in nature but should provide a reasonable means of comparison. <br /> <br />(D) Plant Staging <br /> <br />The existing louisvi lie Wastewater Treatment Plant has a capacity of <br />1.0 MGD. A proposed addition, currently in the prel iminary design <br />stage, is sized at 0.34 MGD, at which point the plant wi 11 be at <br />50 percent of its ul timate requi rement. I f ammonia removal is <br />required, it will have to be added to the following capacities: <br /> <br />Existing Plant <br />Current Addition <br />Remaining Capacity Required <br /> <br />Total <br /> <br />I .00 MG 0 <br />.34 MGD <br />~MGD <br /> <br />2.68 MGD <br /> <br />Based upon the above, ammonia removal would require the fol lowing <br />capital expenditures: <br />