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DUNKEengineering BBR � , � � H I I T � � ' � � Indian River County January 25 , 2008 1801 271h Street Project No . 07- 10-2558 Vero Beach, Florida 32960 (BG 10 .2) Attention: Mr. Mike Nixon, P.E. . . . via etnail (ninixon@(rcgov. coin) Subject: Budget Estimate - Construction Materials Testing Services CR 512 Corridor Improvements — Phase 4 Indian River County, Florida Dear Mr. Nixon: INTRODUCTION As requested, Dunkleberger Engineering & Testing, Inc. (Dunkelberger) is pleased to submit this proposal for Construction Materials Testing Services during construction activities for the CR 512 Corridor Improvements - Phase 4 in Indian River County, Florida. The project will involve the re-construction and widening of approximately 2.2 miles of the existing two-lane highway into a divided highway with two lanes in each direction. We understand the project construction schedule is approximately 12 months. SCOPE OF SERVICES The scope of work described in this proposal is based on our review of civil engineering drawings prepared by Masteller & Moler, Inc . , dated January 2007, and our experience with similar projects. We envision the specific scope of our services to entail the following: Field Observations & Testh • Earthwork observations by a senior technician during the removal of AASHTO A-2-4 and A-2-6 (plastic) type soils from the roadway alignment as outlined in the project plans and specifications. Also, proof-rolling of the roadway subgrade to identify unstable soils prior to the placement of fill and/or base course. • In-place density testing during placement of the roadway embankment fill . Density testing will be performed at a frequency of at least one ( 1 ) test every 200 lineal feet of roadway, within the proposed alignment, for each 1 -foot of embankment fill placed during construction. 607 NW Commodity Cove, Port St. Lucie, Florida 34986 • Phone (772) 343-9787 9 Fax (772) 343-9404