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I I I I I I I I I I I I I I I I I I I August 8, 1995 Honorable Mayor Rippy and Board of Trustees Town of New Castle Page 4 III. EaR DEMAND AND PHYSICAL WATER SUPPLY Following the water rights worksheet, are attached worksheets which identify the Town of New Castle water treatment capacity as of August 1, 1995. In-recent discussions with Skip Marino, the plant capacity when the water diverted from East Elk Creek is in a turbid (high runoff) condition, the maximum capacity or production of water from the water treatment plant is 360 GPM. Based upon this scenario, this 360 GPM capacity (which typically occurs from mid-May through June) is equated to 661 EaR's. This 'can be directly related back to the previous, tables in which the compilation of EaR's in New Castle were made. More specifically, the EOR'~s that the plant can produce under turbid conditions is 661 EaR's. In relating-this'backto Table' 3'otthe'compilation'of~EQR'sin'New Castle, the-current demand on the system is 665 EaR's. Under this scenario, the demand on the system is exceeding the supply. Again, this scenario would occur between the period of mid-May through the month of June. The second worksheet identifies the,better news, which is the'water treatment plant capacity under 'ideal conditions" or when the turbidity is I'OW on East Elk Creek. This typically is occurring from July through May. However, during certain times of the.year"high intensity rainfall events do create high turbidity waters whic.h would reclassify .plant production back into the previous capacities discussed. Under the ideal conditions, the'plantcan produce'522 GPM. Under this scenario, the plant capacity will support 958 EaR's. Relating this back to the compilation of EaR's in New Castle (partrcularly Table 3) identifies that in this scenario, the plant is able to produc'e more waterthan demand on 'the system. IV . IMMEDIATE NEEDS FOR THE TOWN ,OF NEW CASTLE As can be interpreted from the previous discussion regarding the EaR demand and physical water supply, the water treatment facilities for the Town of New Castle are under capacity when flow in East Elk Creek has a high turbidity. In fact, in recent discussions with Skip Marino, water usage this month alone has shown that the plant has not been able to meet the demands for water production that the Town has been placing upon it. Therefore, we would recommend immediate action be taken to begin implementation of the Phase I treatment facility expansions. Inclusive in the Phase I treatment facility expansions are the addition of two more filter units to the water treatment plantas well as the final line replacements of the raw water line to the water treatment plant. This Phase I expansion of the treatment facilities as outlined in the attached Dean Gordon letter (of October 31, 1994) would b(ing the plant capacity up to 1200 GPM. This, in turn, would provide a capacity of 140,0 EaR und.er a peak irrigation day. C:CHMUESER GORDON MEYER, INC.