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September 30, 2019 <br /> HWA Project No. 2015-061-21 <br /> approximately 3,600,000 psi. The concrete mix design should consist of a normal weight <br /> concrete with a minimum 28-day compressive strength of 4,000 psi when tested in accordance to <br /> ASTM C39. The concrete should contain an air entraining admixture to resist the effects of <br /> freezing and thawing. The design of joints,joint spacing, doweling and steel/wire mesh <br /> reinforcement was not included in HWA's Scope-of-Services,but should conform to the <br /> applicable local or WSDOT requirements <br /> 0• <br /> If you have any questions or require additional information, please contact the undersigned at <br /> your earliest convenience at (425) 774-0106. <br /> HWA GEOSCIENCES INC. <br /> c � <br /> ..,;,r►� ,,,moo / <br /> Michael Place, P.E. <br /> Senior Geotechnical Engineer <br /> 3-Acre Park Addendum 2 HWA GeoSciences Inc. <br />