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<br /> <br />NUlTlNG <br />ENGINEERS <br /> <br />Geotechnical & Construction Materials <br />Engineering & Testing · Inspection <br />Environmental Services <br /> <br />OF FLORIDA, INC. <br />ESTABLISHED 1967 <br /> <br />Offices throughout the state of Florida <br />www.nuttingengineers.com.info@nuttingengineers.com <br /> <br />May I, 2007 <br /> <br />Calvin, Giordano & Associates, Inc. <br />1800 Eller Drive, Suite # 600 <br />Fort Lauderdale, Florida 33316 <br />Attn: Mr. Ronnie S, Navarro, Engineer <br />Engineering Department (Broward) <br /> <br />Phone: 954-921-7781 e-mail: mavarro@calvin-giordano.com <br /> <br />Subject: <br /> <br />Reports of Exfiltration Tests <br />Atlantic Isles Utility & Roadway Improvements <br />City of Sunny Isles Beach, Florida <br />Work Order No. 101.36 <br /> <br />Dear Mr. Navarro: <br /> <br />Nutting Engineers of Florida, Inc. has performed six exfiltration tests for the above referenced project. This report <br />presents a brief description of the field procedures, and the results of the exfiltration test. <br /> <br />Exfiltration tests were performed to a depth of twenty (20) feet below existing grade in accordance with South Florida <br />Water Management District (SFWMD) criteria for 'Usual Open-Hole' conditions. Initially, it was proposed to perform <br />the exfiltration tests to fifteen feet. However, due to the low permeability at this depth, it was decided to extend the <br />depth of the test to twenty feet. <br /> <br />Prior to starting the tests, a 6-inch diameter hole was augered to the test depth to determine the depth to groundwater <br />and to examine subgrade soils. After establishing the above parameters, the hole was stabilized by a full-length <br />perforated PVC pipe in accordance with South Florida Water Management District specifications. Water was then <br />pumped into the hole maintaining a constant water level at the ground surface, The stabilized flow rates were <br />recorded in one minute intervals for a total of 10m inutes. <br /> <br />The exfiltration tests revealed the hydraulic conductivity ('K'-value) of the soils ranged from 3.85 X 10-5 to 8.08 X <br />10-5 cubic feet per second per square foot per foot of head, Soil descriptions and flow rates for the tests are shown on <br />the attached exfiltration summary sheet. We note that the water table was encountered at depths in the range of <br />approximately 2.0 to 3.5 feet below the existing ground surface. <br /> <br />We appreciate the opportunity to provide these services for you. Should you have any questions, or if we can be of <br />further assistance, please feel free to contact us. <br /> <br />Respectfully Subl1l itted: <br />NUTTING ENGINEERS OF FLORIDA, INC. <br /> <br />/~/--- ." <br />/--"../'// <br /> <br />1-/" <br />Muhammad Irshad, E.I, B.N <br />Project Ivlanager <br /> <br />Rt~/;/07 <br /> <br />Richard \Vohlfarth, P.E, #50858 <br />Director at' Engineering <br /> <br />Calv ill Gi.lflloll1\ '_AtlillllicUlil il~ 8: l{oaJwilv Improvcmcllt E.xf-I.Cllcr. I 10 I..li> 1\ II <br /> <br />8175 WEST 32"0 AVENUE · SUITE 2 · HIALEAH, FLORIDA 33018 · (305) 557-3083 · Fax (305) 824-8827 <br />Broward (954) 941-8700' Hillsborough (813) 866-8800' Palm Beach (561) 736-4900 <br />