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LAW ENGINEERING June lB, 1988. GEOTECH~CAL. EN~RO~UENTAL & CO~STRUC~I~ ~A~ER~AL5 HDR Engineering, Inc. P. O. Box 11257 Charlotte, NC 28220 Attention: Mr. Paul C. Watson. Jr., P. E. Project Manager Subject: Proposal for Laboratory Testing Roller Compacted Concrete Trial Mix Coddle Creek Dam Caberrus County, North Carolina Law Proposal No. 132M8 Oentlemea: Law Engineering is pleased to submit this proposal for providing laboratory testing of a trial mix for roller compacted concrete for the subject project. Included in this proposal is an outline of our understanding of the project information, proposed scope of services, fee estimate and schedule. Law Engineerin~ has conducted geotechnical explorations for the proposed Coddle Creek Dam and relocation of m portion of N. C. Highway 73. ~ro~ect Information The Coddle Creek Dam site is located approximately 700 Ct north of where N.C. Highway 73 crosses Coddle Creek in western CabarrusCounty, North Carolina. The proposed dam will be an earth embankment about 2800 Ct long with a crest elevation of 660 feet. A 500 ft wide spillway is planned around the east abutment and a 225 Ct wide principal spillway is planned to be incorporated into the embankment on the easb abutment together with a 300 ft wide secondary spillway to be constructed of roller compected concrete (RFC). Our understanding o£ the above information has been obtained from conversations and correspondence with HDR. Proposed Scope of Services As requested in a telecopied transmittal dated June 10, 1988, from Mr. 0ary Lake of HDR, Law Engineering proposes to conduct a laboratory trial mix for roller compacted concrete to be used in the principal spillway.of the proposed dam. We propose to explore five local aggregate sources; HDR prefers pit run materials. This exploration will consist of sampling the material an~ performing I P.O. 80X CHARLOT rE, NC 50~ MINUET LANE CHARLOTTE~ NC (~ 704-5~-2022