Laserfiche WebLink
commercial hot asphalt concrete suppliers. The Standard <br /> Specifications of both the U.S. Forest Service and the State of <br /> Nevada are presented in Appendix B of this report. It is <br /> recommended that mixing of the impacted soils and SS--1H be made <br /> on the ISC Winery site as a safeguard against the possiblity of <br /> untreated material being misplaced to other locations. There is <br /> ample area on the ISC Winery site to use either the stationary <br /> mixing method or the travel mixing method. An emulsion asphalt <br /> proporti(an of 4%-5% of SS-1H is recommended for both mixing <br /> 9 <br /> methods. The mixture can be stockpiled for a maximum of two <br /> weeks or may be placed and compacted on the streets directly from <br /> the mixer. If the mixed material is placed directly on the <br /> street from the miner, no traffic should be allowed on the fresh <br /> pavement for five days. After 30 days of open traffic an the <br /> cured pavement, it is recommended that a Fog Seal of .05 gal/s.y. <br /> of SS-1H be applied. <br /> CONCLUSIONS <br /> The hydrocarbon impacted soils of the ISC Winery site are typical <br /> silty sands found in the Mokelumne River Fan of the Lodi area. <br /> • . Historically, these soils have been used by local agencies for <br /> road construction materials, and have served the purpose well. <br /> Samples taken from the ISC Winery site contain small amounts of <br /> fuel oil . This fuel oil residue may have the effect of slowing <br /> down the emulusion curing of cold mix asphalt paving mixtures. <br /> Stabilometer tests showed poor results after only two days of <br /> cure time. Additional curing time of 14 days greatly improved <br /> the stabilometer value and the pavement strength. Fully cured <br /> emulsion asphalt pavement mixtures produced from the ISC Winery <br /> impacted soils are superior in strength to standard commerically <br /> supplied pavement materials of the area. Fully cured samples of <br /> emulsion mixed pavements incapsvlate any hydrocarbons in the <br /> original soils. Due to the high strength produced from these <br /> samples, it is suspected that these hydrocarbons may in fact be a <br /> positive factor in the unusally high pavement strength of these <br /> test mixtures. It is the opinaan of Foothill Engineering that <br /> these impacted soils would be best utilized in asphaltpavements. <br /> w.` <br /> 6 <br />