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® SVERDRUP & PWAND ASSOCIATES, INC. <br />AND <br />BEINDORF AND ASSOCIATES, INC. <br />(A JOINT VENTURE) <br />Mr. Jack G. Jennings <br />County Administrator <br />Indian River County <br />County Courthouse, Room 115 <br />Vero Beach, Florida 32960 <br />April 15, 1980 <br />Project No. 6674 <br />Subject: Engineer's Job No. 6674 <br />Additional Services - Indian River County South County <br />Water System Improvements - Test Well Program <br />Dear Mr. Jennings: <br />We have reviewed the data submitted by Mr. Tom Tessier, Geraghty & <br />Miller, Inc., and presented at the Commission Meeting on April 9, <br />1980. We have reduced the data to a summary form and are presenting <br />our recommendations below. <br />Please note that three production water supply wells with 12 inches <br />diameter casing are required for the Phase I Water System Improve- <br />ments. <br />SUMMARY <br />1. We concur that the designated Type I (production well <br />with monitory tube) is too costly and required complex construction <br />requirements. Therefore, should not be considered. <br />2. We concur that since no existing well is located in the <br />vicinity of the prospective well sites, Geraghty & Miller's "Scenario <br />I - using an existing well to serve as an observation well" should <br />not be considered. <br />3. Based on the best up-to-date estimates of various types <br />of well construction presented by Geraghty & Miller, the following <br />cost evaluations are presented (based on the median estimated cost). <br />Alternative No. 1 Alternative No. 2 <br />(G&M Scenario II) (G&M Scenario III) <br />Items <br />1. Type II -Production <br />Well (12") <br />2: Type III -Observation <br />Well (4") <br />3. Type IV -Monitoring <br />Well (2") <br />4. Test Pumping <br />Subtotal - Complete <br />Test Well Program <br />5. Addition Two - Type <br />II Production Well <br />@ $50,000 Each <br />Estimated Estimated <br />Cost Items Cost <br />1. Type II -Production $ 53,500 <br />$ 53,500 Well (12") <br />2. Type II -Production <br />19,500 Well (12") used as <br />Observation Well 4 <br />32,100 <br />6,000 <br />$111,100 <br />100,000* <br />3. Type IV -Monitoring <br />Well (2") <br />4. Test Pumping <br />53,500 <br />32,100 <br />6,000 <br />Subtotal - Complete <br />Test Well Program $145,000 <br />5. Addition One - Type <br />II Production Well 501000* <br />Total Test Well Pro- Total Test Well Pro- <br />gram and Three Pro- gram and Three Pro- <br />duction Wells $211,100 duction Wells $195,000 <br />*Additional well(s) to meet total of three required. <br />319 �� ono " Fac . <br />nn <br />APR 2 0, <br />LZ <br />