803LANDSCAPE PLATING MATERIALS

954 802- 2 Blank : 802- 3 Construction Requirements: Roadway shoulders and soil areas left exposed after planting shall be graded as required to leave a generally smooth appearance conforming to the general shape and cross section indicated on the project plans. The final surfaces shall be raked smooth. Al l objectionable material, trash, brush, weeds and stones larger than 2 inches in diameter shall be removed from the site and disposed of in a manner acceptable to the Engineer. 802- 4 Method of Measurement: Landscape grading will be measured either by the square yard of area actually graded or as a single complete unit of work. 802- 5 Basis of Payment: The accepted quantities of landscape grading, measured as provided above, will be paid for at the contract unit price per square yard or per lump sum for the p ay unit designated in the bidding schedule. When landscape grading is not included as a contract item, full compensation for any landscape grading necessary to perform the construction operations specified on the project plans and in the Special Provisions will be considered as included in the unit price paid for contract items. 803- 1 Description: The work under this section shall consist of grading surfaces, eradicating grasses, weeds and undesirable vegetation, furnishing, hauling, placing and compacting imported materials for plating embankment slopes, dikes and other designated areas, all in accordance with the details shown on the proj ect plans and the requirements of these specifications. 803- 2 Materials: 803- 2.01 Soil Backfill and Plating Material: Soil backfill and plating material shall be secured from commercial sources or from contractor furnished sources unless otherwise designated in the Special Provisions. The material shall conform to the requirements of Subsection 804- 2 of the specifications. TABLE OF CONTENTS INDEX 955 803- 2.02 Decomposed Granite and Granite Mulch : Dec omposed granite and granite mulch shall be free of lumps or balls of clay and shall not contain calcareous coatings, caliche, organic matter or foreign substances. All material shall be from a single production source and shall present a uniform appearance throughout the project. The gradation of the decomposed granite shall be as specified in the Special Provisions. 803- 2.03 Rock Mulch: Rock mulch shall be free of calcareous coating, caliche, organic matter or other foreign substances. 803- 3 Construction Requirements: 803- 3.01 Soil Backfill and Plating Material: Areas to receive soil backfill and plating material shall be cleared of all undesirable vegetation, brush, trash, or rock which is 2 inches in diameter or larger, and other objectionable material as directed by the Engineer. Undesirable vegetation, grasses and weeds shall be eradicated with an approved herbicide and by mechanical methods. The soil backfill and plating material shall be spread and shaped to conform to the lines, grades and cross sections shown on the project plans or as established by the E ngineer. The material shall be watered and compacted as specified in the Special Provisions. 803- 3.02 Decomposed Granite and Granite Mulch : Decomposed granite or granite mulch shall not be placed until the require d water distribution systems, acceptable finished grading, and planting operations have been completed within the area. The surfaces and planting areas upon which decomposed granite or granite mulch is to be placed shall be graded and compacted to a densit y of 85 percent of the maximum density as determined in accordance with the requirements of the applicable test methods of the ADOT Materials Testing Manual, as directed and approved by the Engineer. Areas which shall not be compacted will be designated by the Engineer. The areas on which decomposed granite or granite mulch is to be placed shall be reasonably smooth and firm and all deleterious material and rocks larger than 1- 1/4 inches in diameter shall be removed and disposed of by the contractor. Decom posed granite or granite mulch shall be evenly distributed over the designated areas. The depth of the decomposed granite or granite mulch shall be within 1/2 inch of the depth shown on the project plans. TABLE OF CONTENTS INDEX 956 All areas to receive decomposed granite or grani te mulch shall be as approved by the Engineer prior to placement of the decomposed granite or granite mulch. All vehicles used for spreading, grading, and raking the granite mulch and decomposed granite shall have one set of wheels with floatation tires ha ving a minimum width of 18 inches to allow equal compaction of the granite mulch and decomposed granite. After rough spreading and rough grading of the granite mulch and decomposed granite within the designated areas, the granite mulch and decomposed grani te shall be raked to evenly blend the different gradation sizes. Following approval by the Engineer, the granite mulch and decomposed granite shall be saturated with water to optimum moisture level. The Engineer will approve the amount of water necessary to aid in the compaction of the granite mulch and decomposed granite. Where granite mulch and decomposed granite are within the planting pits, the maximum depth shall be 1 inch. During the final spreading and final grading operations, all surfaces within the granite mulch and decomposed granite areas shall be passed over by the spreading and grading equipment a minimum of two times. All equipment operations for spreading and grading, raking, chemical application, water settling, and any other operations shall be done in a manner that uniformly maximizes the vehicles' wheel compaction over the surface. The contractor shall apply one application of an approved pre- emergent herbicide on all granite areas following placement of the granite. Water to activate the pre- emergent herbicide shall be applied to the areas of the herbicide application as recommended by the manufacturer's label. The amount of water specified by the manufacturer may be adjusted due to rainfall, if approved by the Engineer. The contractor shall notify the Engineer and obtain prior approval for the use of any herbicides for weed eradication. The contractor shall keep a record of all applications; the type of herbicides used; the rate and method of application; and the date and location of such applications. A copy of this record shall be submitted to the Engineer after each application. After placing, spreading and grading the granite, the contractor shall water settle the total thickness of the granite to remove the fine material from th e surface. Any erosion which occurs within the decomposed granite and granite mulch areas shall be corrected by the contractor and approved by the Engineer prior to final acceptance. TABLE OF CONTENTS INDEX 957 803- 3.03 Rock Mulch: The surfaces upon which the rock mulch is to be placed shall be fine graded and compacted to 90 percent of the maximum density as determined in accordance with the requirements of the applicable test methods of the ADOT Materials Testing Manual, as directed and approved by the Engineer. All deleterious material shall be removed and disposed of by the contractor. The areas shall be totally free of grasses, weeds and undesirable vegetation, using herbicides in accordance with Subsection 803 -3.02 of the specifications. All dead grass and weeds shall be removed and disposed of by the contractor as approved by the Engineer. The contractor shall repair eroded areas and compact soil as approved by the Engineer. Prior to placement of rock mulch, the contractor shall stake out al l areas to receive rock mulch and a pre- emergent herbicide shall be applied to the staked areas in accordance with the manufacturer's printed instructions and as approved by the Engineer. Water shall be applied to the areas of the herbicide application as required by the manufacturer's label. This water may be supplemented by rainfall as determined by the Engineer. The rock shall be placed in an even application, tightly packed, to provide complete coverage of the area shown on the project plans so that soil will not be visible between rocks. After placing and grading the rock mulch, the contractor shall water the mulch with a light spray to remove fine material from the surface as approved by the Engineer. Any regrading that is necessary after placement of the rock mulch shall be at no additional cost to the Department. Care shall be taken in the placement of the rock mulch so as not to disturb or damage any plant material, adjacent surfaces or irrigation equipment. 803- 4 Method of Measurement: Decomposed granite and granite mulch will be measured by the square yard, or by the cubic yard, of material in place at the specified thickness. The quantity for this item, as shown on the bidding schedule, will be used for payment of this item unless the contractor and the Engineer agree that there is a variation in excess of 10 percent. The Engineer will determine the new quantities for variations in excess of 10 percent. Rock mulch will be measured by the cubic yard of material in place at the specified thickness. The quantity for this item, as shown on the bidding schedule, will be used for payment of this item unless the contractor and the Engineer agree that there is a variation in excess of 10 percent. The Engineer will determine the new quantities for variations in excess of 10 percent. TABLE OF CONTENTS INDEX