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Page 2 <br />AUGI�1,..� <br />j, <br />L <br />The Prairie du Chien aquifer supplies the 3,000 square miles seven county <br />metro area with 80% of ground water pumped for public water supply. <br />152,500,00 gallons are pumped daily from this aquifer. That Is approximately <br />1,500 times more water than we are using. These figures clearly reveal the <br />magnitude of the Jordan aquifer and the gal' as of water available. The U.S. <br />Geological Survey, titled: "Water Resources Investigations Report 83-4237", <br />talks of the "hydraulic connection" of area surface lakes and this underground <br />water supply. This "hydraulic connection" completes a cycle of water being <br />extracted for public condtimptl.on and replenished by these surface lakes. The <br />geologic cross -sectional map verifies the location of the Jordan aquifer and <br />Lake Minnetonka above, thereby allowing this hydraulic connection to occur. <br />The geoth,;rmal heating system now becomes an effective environmental heating <br />and cooling alternative by re-cyling water used. <br />4. Pump size - specs on - np: <br />Red Jacket brand,--uo... 7sIble pump. 10 horsepower. Three-phase power. <br />Pumping capacity of 150/gallons per m!nute. <br />5. Profile of discharge pipe station/elevations/percentage on grade: <br />Attached are drawings from George Sl.opr showing pipe going into the <br />lagoon. A(,,,L„*-_V <br />6. Temperature of discharge water - winter/summer: <br />Temperature of dis, large during heating season: 39-40 degrees.I�(.�.�'-K <br />Temperature of discharge during cooling season: 57-60 degrees. <br />This is explained ii the !r,ormation submitted , zrra-Therm, Inc. <br />7. Method of anchoring en': - discharge line: �-4k.(rf- YK <br />Since the discharge pipe has been re -designed to go to the lagoon, <br />anchoring to lake dr•s not apply, but a sim!lar anchor and sta-.,4 will be used <br />in the lagoon drat. 4 is included. <br />8. Depth and location of 100 'eet discharge line - lake: <br />Does not apply after re -design of discharge pipe. <br />9. Submit list of hardships since appl!rint seeks a variance from the City: <br />SURFACE DISCHARGE <br />1. Natural drainage syb,-!m " the l h property and adjoining <br />properties would be over _,tende a undue erosion of <br />said properties could.occur. <br />2. Tax hydraulic capacity of the existing pond located on <br />southeast corner of Lot 1, 1595 Bohn's Point Road. <br />3. Contamination a degradated water quality by carr,ing <br />on shore nutrients into the lake. <br />4. ^pen water may occur causing dangerous lfabllity situation. <br />