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PART 3 - EXECUTION <br />3.1 Limits of Exposure. <br />A. After construction begins, soil surface stabilization shall be applied with fourteen (14) <br />days to all disturbed areas that may or may not be at final grade but will remain <br />undisturbed for periods longer than thirty (30) calendar days or for an indeterminate <br />length of time. The maximum time limit of land exposure for the following erosion <br />control measures is shown by the following table: <br />Erosion Control Method <br />Maximum Allowable <br />Period of Exposure <br />(months) <br />Surface Roughening <br />1 <br />Mulching <br />12 <br />Temporary Reve etation <br />6-12 <br />Permanent Reve etation <br />12 or more <br />Soil Stockpile Reve etation <br />2 <br />Early Application of Road Base <br />1 <br />Modified from Urban Drainage and Flood Control District Urban Storm <br />Drainage Criteria Manual Volume 3 - Best Management Practices <br />3.2 Site Preparation. <br />A. Clearing and Grubbing: All damaged native shrubbery and trees adjacent to the <br />disturbed areas must be correctively pruned or removed. All large rocks, boulders, <br />and construction debris must be removed from the site by the CONTRACTOR. <br />B. Grading: The disturbed area must be fine graded to allow for tractor - driven mowing <br />machinery. Transition from the disturbed areas to the original grade must have an <br />even, natural, and maintainable appearance. <br />3.3 Soil Preparation, <br />A. If needed prior to seeding, spray all areas that are to be seeded with "Roundup" <br />herbicide or approved equal using a one percent (1 %) solution as directed on <br />packaging. Do not contaminate surface waters during application(s) and leave <br />adequate residual time for the chemicals prior to seeding. <br />B. Thoroughly till all areas which are to be seeded and are 3:1 or flatter; areas that <br />previously supported vehicular traffic shall be tilled to a depth of twelve (12) inches, <br />till all remaining areas to a depth of four (4) inches. Slopes which are steeper than <br />3:1 shall be raked so that the top one - quarter ('/4) inches of soil are loose and friable <br />before seeding. Work the soil only when moisture conditions are suitable. Remove <br />rocks and other objects two (2) inches or greater in any dimension. <br />CITY OF GOLDEN <br />REVEGETATION REQUIREMENTS <br />