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1 TOWN MEETING <br /> • 2 JANUARY 28 , 1992 <br /> 3 PAGE 3 <br /> 4 <br /> 5 <br /> 6 should be given an opportunity to become informed as to what is <br /> 7 going to happen with regard to this project . Another Town Meeting <br /> 8 may be held in two or three months . <br /> 9 <br /> 10 Dennis Palmer of Barr Engineering described the study strategies so <br /> 11 the affected property owners will be familiar with the options and <br /> 12 what is being recommended. <br /> 13 <br /> . 14 He reviewed the historical data regarding this problem area which <br /> 15 was gathered from St . Anthony staff and staff from Roseville and <br /> 16 Minneapolis . <br /> 17 <br /> 18 He noted that to divert water into Minneapolis would not be , a <br /> 19 dependable solution. To make the outflow pipe larger would simply <br /> 20 move the problem around to another area in the City. The real <br /> 21 problem was that the present storm system is not totally adequate. <br /> 22 <br /> 23 The outlet capacity at County Road #88 and Lowry Avenue is too <br /> 24 small . Additional capacity is needed to be provided to solve the <br /> 25 problems . <br /> 26 <br /> 27 With the use of an overhead projector and slides, Palmer presented <br /> 88 the following options : <br /> 29 <br /> 30 "plumbing option" : This option would provide additional capacity, <br /> 31 but the peak flow from St . Anthony was at the identical time as the <br /> 32 peak flow from other areas in the Watershed District . So, although <br /> 33 the additional capacity would be there with this option, it would <br /> 34 not really solve the problem. <br /> 35 <br /> 36 Palmer noted that to increase the capacity by increasing the size <br /> 37 of the pipe was not realistic as upgrading the entire pipe all the <br /> 38 way to its final outlet into the Mississippi River would be very <br /> 39 costly. To install a pipe large enough to carry the water the pipe <br /> 40 would be too large for the shaft . <br /> 41 <br /> 42 The "plumbing option" would cost approximately twelve million <br /> 43 dollars . <br /> 44 <br /> 45 <br /> 46 ."ponding areas option" : This option would store water in ponding <br /> 47 areas around the City until the pipe capacity was available and <br /> 48 then release it . <br /> 49 <br /> 50 Using a topographical map, this option was explored on computer <br /> 51 models called "hydrographs . " Data to compute these models , the <br /> 52 engineering firm used comparisons of storms in the history of the <br /> 03 City, flood levels and flood areas , changing of pipe size and <br /> 1 diversion of water into certain areas . <br />