The following procedures and specifications shall be required for all driveway construction from streets to private garages, and for all parking lot construction in areas served by streets with curb and gutter. Developments in rural areas where storm sewer is not installed may utilize rural cross section roads, and driveways may be of crushed rock, gravel, or other durable materials:
A. Procedures:
1. The driveway or parking lot shall be excavated to remove all organic or other unstable soils from the area to be surfaced.
2. The area to be surfaced shall be graded and compacted to the elevation that will permit the placement of the full pavement section.
3. The performance of the work and the quality of materials shall be in accordance with the latest revision of the City Standard Specifications and the State Department of Highways Standard Specifications for Highway Construction.
4. The Public Works Director, or designee, shall be granted access to the improvement area during all phases of construction pursuant to City Code Section 1-3-1. The contractor or owner shall arrange for inspections of the grading work, the aggregate base placement, and the bituminous course placement with the Public Works Director prior to proceeding with the subsequent work phase. Any and all stability, compaction, gradation or other material or placement tests that the Public Works Director may request shall be provided by the contractor or owner through a testing company acceptable to the City.
B. Specifications:
1. Driveways and parking lots shall be constructed so as to provide drainage from the garage to the street or storm sewer system unless an alternative method is approved by the Public Works Director.
2. Minimum pavement sections for asphalt driveways and parking lots shall be:
a. Driveways for residential buildings with four (4) units or less per building:
(1) 2360 bituminous wearing course - two inches (2").
(2) Compacted class 5 aggregate base - not less than four inches (4") compacted.
b. Parking lots and driveways for residential buildings with more than four (4) units per building, and commercial, industrial, and institutional areas:
(1) 2360 bituminous wearing course - two inches (2") compacted.
(2) 2360 bituminous non-wearing course - two inches (2") compacted class 5 aggregate base - six inches (6") compacted unless alternates are approved in writing by the City. In all cases, alternate pavement sections shall be considered only if sufficient data to justify another pavement design, based on the current Minnesota Transportation Department design procedure for flexible pavement, is submitted as part of a formal alternate request. If, based on the plan that is presented, the Public Works Director determines that the proposed driveway or parking lot construction is not deemed adequate due to traffic volumes or types of traffic, additional construction materials may be required by the City based on Minnesota Transportation Department design criteria.
(i.) Minimum pavement requirements for concrete driveways shall be:
(a) Gravel base - three inches (3") compacted.
(b) Slab - four inches (4").
(c) Reinforcement - 6 x 6 no. 10 mesh.
3. Minimum requirements for gravel driveways shall be at least six inches (6") (compacted) of class 5 gravel meeting state transportation department specification 2118.
C. Permit Fee: The permit fee for driveways and parking lots shall be in such amount as provided by ordinance of the City Council from time to time.