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Special Conditions for -2- <br />ENCROACHMENT PERMIT <br />and plating plan suitable for traffic loadings shall be prepared by a registered civil engineer and <br />submitted for prior approval by the County. <br />13. The contractor shall use San Joaquin County Improvement Standard R-29 when backfilling <br />trenches/bell holes within the County right-of-way. Where the existing road structural section is <br />below standard, a minimum section of 3 inches of asphalt concrete over 6 inches of aggregate <br />base shall be required. <br />14. Class II Aggregate Base shoulder backing is required from the edge of pavement, a minimum of <br />4 -inches thick by 4 -feet wide. <br />15. 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 />16. 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 />17. The contractor shall not conduct construction operations in rain or heavy fog conditions. <br />