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CTL I THOMPSON <br />~~ - ~ a~ ~~ <br />June 1, 2006 <br />• <br /> <br />Everist Materials <br />PO BOX 1150 <br />Silverthorne, Colorado 80498 <br />Attention: Mr. Nate Thomas <br />Subject: Physical Properties Testing <br />Fine Aggregate, Empire Pit <br />Project No. CT13,613-400 <br />Dear Mr. Thomas: <br />This report presents results of physical properties tests performed on material <br />delivered to our laboratory in May, 2006. Representative samples delivered were identified <br />as Fine Aggregate from the Empire Pit. Testing was performed to determine the materials <br />compliance with Colorado Department of Transportation (CDOT) specifications. Testing was <br />performed in general conformance with the applicable AASHTO and ASTM test methods. A <br />summary of test results is presented below. Complete test results are presented in <br />Attachment A. <br />Summary Table <br />Fine Aggregate, Empire Pit <br />q CDOT <br />~I Fine ASTM C 33 <br /> <br />Test <br />~ Specifications <br /> Aggregate Specifications <br />!~ <br />~~ (AASHTO M 80) <br />Sieve Analysis See Table 1 See Table 1 See Table 1 <br />ASTM C 33, AASHTO M 43 <br />Passing No. 200 Sieve 1.1% 1% max 1% max <br />ASTM C 117, AASHTO T 11 <br />Specific Gravity (SSD) <br />Fine Fraction 2.62 NA NA <br />ASTM C 127, AASHTO T 85 <br /> <br />Absorption 1.2% NA NA <br />(ASTM C 127, AASHTO T 85) <br />Sand Equivalent gg% NA 80% min <br />(ASTM D 2419, AASHTO T 176) <br />Sodium Soundness <br />Fine Fraction 3.5% 12.0% max 12.0% max <br />(ASTM C 88, AASHTO T 104) <br />Wei hted Loss <br />Clay Lumps and Friable Particles <br />Fine Fraction 0.2% 2% max 2% max <br />(ASTM C 142, AASHTO T 112) <br />Wei hted Avera e <br />22 Lipan Street I Denver, Colorado 80223 I Telephone: 303-825-0777 Fax: 303-893-1568 <br />