In-Depth Review 2022 Section 220 156 SECTION 220
220.01 Description
This work consists of preparing or restoring a stockpile site for materials other than topsoil.
220.02 Equipment
Reserved.
220.03 Material
Use granular material with less than 30 percent passing the No. 200 sieve.
220.04 Construction Requirements
A.Prepare Stockpile Site. Strip all existing topsoil from stockpile area, up to a maximum of 1 foot. Shape and compact the site so water drains away from the stockpiled material. Place and compact 6 inches of granular material on the stockpile site.
B.Erosion Control.
1.General. Install erosion control items as specified in the appropriate section of the specifications.
2.Department Designated Stockpile Site. If the Department designates a stockpile site, include the erosion control measures in the SWPPP submitted to the Engineer as specified in Section 107.02 C, “Storm Water Permits” .
3.Contractor Obtained Stockpile Site. If using a Contractor obtained stockpile site, obtain the applicable permits as specified in Section 107.02, “Permits, Licenses, and Taxes” . These permits will be separate from the permits obtained for Department designated areas. Before work begins on the site, furnish the names of the legal owners and the names of other parties having a legal interest in the borrow areas. Submit a copy of the site agreement. After the site has been restored to satisfactory condition, obtain a release and receipt of paym ent from the legal owners, and furnish copies to the Engineer.
C.Restore Stockpile Site.
1.Department Designated Stockpile Site. Restore the stockpile site upon completion of the project. Dispose of the unused or waste material and granular material at locations acceptable to the Engineer. In-Depth Review 2022 Section 220 157 Restore the site to its original condition replacing topsoil and seeding. Use seed as specified in the plans, if no seed is specified use Class II seed mixture as specified in Section 251.02, “Equipment”, 251.03, “Materials ”, and 251.04, “Construction Requirements”. Place mulch as specified in Section 253.02, “Equipment”; 253.03, “Materials” ; and 253.04, “Construction Requirements”. Submit a copy of the landowner's release, receipt of payment, and a statement that the stockpile site has been restored to a satisfactory condition.
2.Contractor Obtained Stockpile Site. Restore the stockpile site as required within the site agreement upon completion of the project.
220.05 Method of Measurement
The Engineer will measure as specified in Section 109.01, “Measurement of Quantities” and as follows: Erosion control items for Department designated stockpile sites will be measured as specified in the “Method of Measurement” portion of the appropriate section of the specification. Seeding and mulching will not be measured. Erosion control items for Contractor obtained stockpile sites will not be measured.
220.06 Basis of Payment
Pay Item Pay Unit Prepare Stockpile Site Lump Sum Restore Stockpile Site Lump Sum Erosion control items for Department designated stockpile sites will be paid as specified in the “Basis of Payment” portion of the appropriate section of the specification. Include the costs for all removing and stockpiling topsoil, shaping and compactin g subgrade, furnishing, placing, shaping, and compacting granular material in the contract unit price “Prepare Stockpile Site”. Include the costs for all disposal of wastes, spreading topsoil, compaction, blading, water, seed, fertilizer, and mulching in the contract unit price “Restore Stockpile Site”. Such payment is full compensation for furnishing all materials, equipment, labor, and incidentals to complete the work as specified. In-Depth Review 2022 Section 230 158 SECTION 230 RESHAPING ROADWAY AND SUBGRADE PREPARATION
230.01 Description
This work consists of scarifying, shaping, compacting, and maintaining the subgrade, or reshaping an existing roadway before constructing a base, or surface course.
230.02 Equipment
Equipment Section Roadbed Planer 153.02 Provide a general purpose moldboard plow capable of plowing to a depth of 12 inches or more that will completely lift, invert, and throw the soil to the side. Provide a heavy duty disk capable of breaking up and evening out the plowed surface.
230.03 Materials
Reserved.
230.04 Construction Requirements
A.Reshaping Roadway. Reshape roadway, ditches, and slopes. Remove and dispose of the following: − Rocks larger than 4 inches in their longest dimension; − Roots; and − Deleterious material. Fill and compact holes and depressions with approved material. Compact the soil as specified in Section 203.04 G.2, “Compaction Control, Type A.”
B.Shoulder Preparation. Spray herbicide to kill all vegetation and roots on the pavement slough and within 2 feet of the outside edge of the slough. Mix and apply the herbicide according to the manufactur e's recommendations. Spray the herbicide in two applications that are three weeks apart. Complete spraying no more than 30 days before starting paving operations. Take precautionary measures to prevent any damage to adjacent vegetation caused by the sprayi ng operation. Till or disk the area beginning at the bottom of the existing pavement slough to a distance between 2 and 4 feet down the foreslope. Move the disturbed material away from the pavement slough before placing the overlay. Replace the disturbed material within 14 days of initial. Provide a smooth transition between the top of the pavement slough and the existing inslope. Remove all materials that will interfere with a smooth transition.
Source: North Dakota Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 191–192 of 550.