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CALIFORNIA STANDARD SPECIFICFIONS <br />TO REDUCE NOISE IMPACTS <br />Section 7 -1.01N Sound Control Requirements <br />The Contractor shall comply with all local sound control and <br />noise level rules, regulations and ordinances which apply to any <br />work performed pursuant to the contract. <br />Each internal combustion engine , used for any purpose on the job <br />or related to the job, shall be equipped with a muffler of a type <br />recommended by the manufacturer. No internal combustion engine <br />shall be operated on the project without said muffler. <br />Section 42 -2.02 Construction <br />The noise level created by the combined grooving operation shall <br />` not exceed 86 dBA at a distance of 50 feet at right angles to the <br />l direction of travel. <br />Section 42 -2.02 Construction <br />The noise level created by the combined grinding operation shall <br />not exceed 86 dBA at a distance of 50 feet at right angles to the <br />direction of travel. <br />1. Source: Caltrans, "Standard Specifications "; January, 1981. <br />17 <br />