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Special Conditions for <br />ENCROACHMENT PERMIT <br />-2- <br />11. The contractor shall use San Joaquin County Improvement Standard R-29 when backfilling <br />trenches within the County right-of-way. Where the existing road structural section is below <br />standard, a minimum section of 3 inches of asphalt concrete over 8 inches of aggregate base <br />shall be required. <br />12. Class II Aggregate Base shoulder backing is required from the edge of pavement, a minimum of <br />4 -inches thick by 44eet wide. <br />13. Contractor shall establish existing roadway and drainage grades within the construction area. <br />Any repair to roadways and adjacent areas shall match existing grades. Any proposed grade <br />changes shall receive prior approval from County. <br />14. Above ground vaults, panels and/or other similar facilities will be allowed within the right-of-way if <br />located as far to the outside edge as possible. Utility vaults shall be located a minimum of 4)41 <br />from edge of pavement. <br />15. County roads shall be kept clean from mud and debris at all times along the access points and <br />work zone areas during entire project. All standard roadway striping and signage shall be clearly <br />visible, maintained and restored throughout the construction zone during and after the project. <br />16. In addition to standard dust control measures, streets shall be maintained in a clean condition, <br />free of dirt, mud and debris during construction activities. The contractor shall provide daily, and <br />as determined to be necessary by County inspectors, street sweeping using a modern <br />mechanical or vacuum -assisted street sweeper. <br />17. The contractor shall not conduct construction operations in rain or heavy fog conditions. <br />