966 Unless otherwise specified in the Special Provisions, Class III seeded areas shall not be watered after planting. 805- 3.03 Preservation of Seeded Areas: The contractor shall protect seeded areas from damage by traffic or construction equipment. Surfaces which are eroded or otherwise damaged following seeding and prior to final acceptance shall be repaired by regrading , reseeding and remulching as directed by the Engineer. 805- 4 Method of Measurement: Seeding (Class I) will be measured by the square foot of ground surface measured to the nearest 1,000 square feet seeded or as a single complete unit of work. Seeding (Class II) and Seeding (Class III) will be measured by the acre of ground surface seeded or as a single complete unit of work. 805- 5 Basis of Payment: The accepted quantities of seeding, measured as provided above, will be paid for at the contract price for the pay unit specified in the bidding schedule, complete in place. No direct measurement or payment will be made for the preservation or repairs of seeded areas. 806- 1 Description: The work under this section shall consist of furnishing and planting trees, palms, shrubs, vines, cacti and other plants (nursery stock) and transplanting trees, palms, shrubs, vines, cacti and other plants (collected stock and/or local stock), all as designated on the project plans. The work shall also include the layout and preparation of planting pits, trenches and beds, including excavating and backfilling; the storage and protection of all planted and unplanted stock and other materials; amendments, all mulching, fertilizing, watering, staking, guying, pruning and wrapping; the cleanup of the area; application of pre-emergent herbicide; rem oval of grass, weed and undesirable vegetation; application of rodent repellent; disposal of unwanted and deleterious materials; and the care and maintenance; all in accordance with the details shown on the project plans and the requirements of these speci fications. TABLE OF CONTENTS INDEX 967 806- 2 Materials: Certificates of Compliance conforming to the requirements of Subsection
106.05of the specifications shall be submitted to the Engineer for all
contractor furnished materials, unless otherwise specified. 806- 2.01 Nursery Stock: All plants shall be grown in a nursery and shall conform to the applicable requirements specified in the current edition of "American Standard for Nursery Stock" as approved by the American National Standards Institute, Inc., and sponsored by the American Association of Nurserymen, Inc., subject to certain variations in size and measurement when specified on the project plans or in the Special Provisions. Botanical plant names shall be in accordance with the current edition of "Standar dized Plant Names" prepared by the American Joint Committee on Horticultural Nomenclature. All plants shall be true to type and species shown on the project plans and at least one plant in each group of plants of the same species delivered to the projects hall be tagged with a weatherproof label stating both the botanical and common name of the plants in that group. Within thirty calendar days after the preconstruction conference, the contractor shall supply the Engineer with written verification that it has located and reserved all the plant material necessary to complete the work as specified. This verification will serve as proof of availability for all plant material required. All plants shall be in a healthy condition with normal symmetrical form, well -developed foliage, branches and cane systems at the time of delivery to the project. Plants shall be free of disease, insect eggs or infestations, disfiguring knots, bark abrasions, broken tops, branches or canes, damaged roots, sun, wind or frost injury, or other objectionable features. Plants pruned from larger sizes to meet specified sizes will not be accepted. Plants which are furnished in containers shall have been growing in the containers for a sufficient period of time for uniform root development throughout the plants' ball, but the roots shall show no evidence of having been restricted or deformed. The presence of grass, weeds, or any undesirable organism in the soil surrounding the plants, or any of the previously listed conditions, may be cause for rejection of the plants. No substitution of species and/or sizes of specified plants shall be made unless evidence is submitted in writing to the Engineer showing that plants in the species, quantity and/or sizes specified are not available during the contract period. The substitution of species and/or sizes shall TABLE OF CONTENTS INDEX 968 be made only with the written approval of the Engineer prior to making said substitution. Substitution of a larger size of the same species may be made by the contractor without written approval. However, the contractor shall be responsible for any additional cost of the plants or for any additional planting costs. All plants shall comply with Federal and State laws requiring inspection for diseases and infestations. All shipments or deliveries of plant material grown within the State will be inspected at the nursery or growing site by the authorized State of Arizona authorities prior to delivery to the project. A copy of the state inspection record shall accompany all plant material which is grown out of state and shall show that the plant material has been inspected for plant diseases and insects. All rejected plants shall be removed from the project immediately upon rejection by the Engineer. 806- 2.02 Collected Stock: Collected stock shall be secured from sources outside the project limits for transplanting, and shall comply with the size, type and species requirements designated on the project plans or in the Special Provisions. When sources for collected stock are not designated, th e contractor shall furnish the source. Collected stock shall be healthy and free of weeds, grasses, insects, disease, defects and disfigurements, and shall be as approved by the Engineer before transplanting operations are begun. Palm trees shall be free of scars and damage considered unsightly or unhealthy as determined by the Engineer. The contractor shall comply with all State and Federal laws regarding the removal, sale and transporting of native plants. 806- 2.03 Local Stock: Local stock shall be secured from within the project limits for transplanting and will be designated on the project plans, in the Special Provisions or by the Engineer. All plants sh all be as approved by the Engineer before transplanting operations are begun. 806- 2.04 Prepared Topsoil: Prepared topsoil shall consist of prepared soil mixed as specified under Subsection 806- 2.05 of the specifications, except the existing soil shall be r eplaced with topsoil. The existing soil excavated from the planting TABLE OF CONTENTS INDEX 969 pits shall be removed and disposed of by the contractor. Soil conditioner shall be as specified under Subsection 806- 2.05 of the specifications. Topsoil shall conform to the requirements of Subsection 804- 2 of the specifications. Soil excavated from existing planting pits, trenches and beds which meet the requirements of Subsection 804- 2 of the specifications may be used as topsoil. 806- 2.05 Prepared Soil: Prepared soil shall consist of a uniform mixture of existing soil, peat humus, manure, chemical fertilizer, soil conditioners and/or other needed amendments conforming to the specifications contained herein for the respective items and proportioned as specified in the Special Provisions. Soil conditioner shall consist of composted, ground or shredded fir, redwood, ponderosa bark or shavings, and shall have a pH not exceeding 7.5, a minimum total nitrogen content of 0.5 percent, an organic matter content of not less than 85 percent, and shall contain a wetting agent or be hygroscopic. The soil conditioner shall be graded so that a minimum of 85 percent of the material will pass a 1/4- inch sieve. Prepared soil shall be produced prior to use in the planting pits, by combining the approved component materials into a homogeneous uniform mixture. The Engineer shall be notified and shall approve the components and the method of mixing prior to the production of the prepared soil. 806- 2.06 Mulch: Mulch shall conform to the requirements of Subsection 805- 2.03 of the specifications. 806- 2.07 Water: Water shall conform to the requirements of Subsection 805- 2.04 of the specifications. 806- 2.08 Chemical Fertilizer: Chemical fertilizer shall conform to the requirements of Subsection 805 - 2.06 of the specifications . 806- 2.09 Lumber and Tree -Stakes: Tree -stakes, supports and braces shall be sound, straight construction grade treated Douglas fir, lodge pole pine, heart redwood or other species approved by the Engineer. Douglas fir stakes and braces shall have nominal dimensions of 2 by 2 inches and lodge pole pine stakes TABLE OF CONTENTS INDEX 970 shall have a diameter of 2 inches or greater. Tree -stakes and braces may be furnished either rough or dressed. Lumber stored at the project site shall be neatly stacked on skids a minimum of 12 inches above the ground and shall be protected from the elements to prevent damage or warping. 806- 2.10 Hardware: Nails, lag screws, staples and other hardware shall be galvanized and of commercial quality. All bolts and lag screws shall be furnished with galvanized malleable washers. Wire shall be new soft annealed galvanized steel wire of the size detai led on the project plans. Covers for guying wires shall be new, 1/2- inch minimum diameter, vinyl or two -ply fabric- bearing rubber hose. 806- 2.11 Existing Plant Material: The contractor shall be responsible for maintaining all existing plants and providing an adequate water supply to any existing plants affected by construction activities. Existing plants that are removed, damaged or destroyed during construction shall be replaced with trees and shrubs of the same species at no additional cost to the Department. Existing plants removed, damaged, or destroyed shall be replaced with plants of a similar size as directed by the Engineer. 806- 3 Construction Requirements: 806- 3.01 General: By the time of the preconstruction conference, the contractor shall submit a list of all materials and equipment that it proposes to incorporate into the work to the Engineer electronically. In addition to the electronic submi ssion, the Engineer may request up to three hard copies. The contractor shall have materials and equipment correctly marked on the list. The list shall show the catalog number, manufacturer's name, model numbers, sizes, complete specifications, instructions, design data and/or drawings, to determine whether or not each piece of material or equipment is acceptable and to assure that all such materials and equipment, when incorporated into the work, is in accordance with the requirements of the project plans and these specifications. Plant material shall be approved as specified under Subsection 806- 3.03 of the specifications. The contractor's failure to comply with these material submittal instructions will not constitute time extensio ns. TABLE OF CONTENTS INDEX 971 No material or equipment shall be ordered and work shall not begin until the material and equipment has been approved, in writing, by the Engineer. All planting shall be done during the times and/or temperatures specified in the Special Provisions. 806- 3.02 Excavation: The contractor shall be responsible for laying out all planting areas and staking all plant locations in reasonably close conformity to the dimensions and locations shown on the project plans. The Engineer's approval of all planting areas and locations shall be obtained prior to any excavating of planting pits, trenches or beds. In the event that existi ng field conditions such as subsurface utilities, pipes, structures, impervious materials or inadequate drainage necessitate relocation of planting areas, the Engineer will designate new locations. Prior to excavating planting pits or trenches or beds for plants, these areas shall be graded to the lines and grades designated on the project plans or as approved by the Engineer. Planting pits and trenches shall be excavated to the dimensions indicated on the project plans or in the Special Provisions and shal l have vertical sides and horizontal bottoms. When dimensions are not specified, the pits and trenches shall be excavated to a depth 12 inches below the bottom of the root system and to a width twice the root system diameter. When excavation of any planti ng pit is difficult and the Engineer determines that poor drainage may result, the pit shall be filled with water twice in order to check the drainage. Any pit which has not fully drained after each filling within a twelve- hour period shall be deepened until proper drainage is achieved. If proper drainage cannot be achieved, the pit shall be moved or deleted, as determined by the Engineer. If required, this work shall be paid for in accordance with Subsection 104.02 of the specifications. Excavation of planting pits, trenches and beds shall not be done when, in the opinion of the Engineer, the moisture content of the soil is excessive with respect to accepted horticultural practice. 806- 3.03 Shipping and Handling Plants: Prior to shipping, all plants shall be dug, handled, prepared and packed for shipment with care and skill, in accordance with recognized standard practice for the kind of plant involved. The root systems of all plants shall not be permitted to dry out at any time. While in transit, plants shall be protected at all times against freezing temperatures, the sun, TABLE OF CONTENTS INDEX 972 the wind and other adverse weather conditions. During transportation in closed vehicles, plants shall receive adequate ventilation to prevent "sweating.” Plants delivered in a wilted condition will be rejected. The contractor shall notify the Engineer at least 24 hours prior to the date for inspection of plants at any Arizona plant source or at the project site. The Engineer will inspect all plants for conformity with the specifications and, upon the Engineer's acceptance, planting may begin. The Engineer may select at random no more than three container -grown plants of each species in every delivery to the site for root development inspection. Plants of the same species from diff erent growers shall be considered as separate shipments. If upon inspection of root development of plants so selected the Engineer determines the roots have become restricted or deformed in their containers, all plants of that species in that shipment, including the inspected plants, will be rejected and shall be removed from the site. The contractor's project supervisor shall attend all plant inspections. Deciduous plants may be furnished bare- root, and evergreen plants and conifers shall be furnished balled and burlapped or in containers, as specified in the Special Provisions or on the project plans. The balling and burlapping of trees and shrubs shall conform to the recommended specifications set forth in the "American Standard for Nursery Stock." All plant balls shall be firm and intact. Plants whose stems are loose in the ball will be rejected. All balled or burlapped plants shall at all times be handled by the ball and not by the top, leaders or canes. All bare -root plants delivered in bundles shall have the bundles broken and the plants placed separately prior to being temporarily "heeled- in.” Care shall be taken so that all plants removed from bundles will have an identifying label. Bare- root plants shall be stored with roots completely covere d with damp sawdust, soil or other suitable moisture- retaining material. Plants delivered, inspected and found acceptable for planting shall normally be planted within 24 hours after delivery to the project site. Plants which cannot be planted within 24 hours after delivery shall be stored as specified herein. Balled and burlapped plants shall have the root ball protected by moist sawdust, earth or other acceptable material. All temporarily stored plants shall be protected from extreme weather conditions and the roots shall be kept moist. 806- 3.04 Planting:
On landscaping projects with irrigation systems, no planting shall be done until installation and acceptance of the irrigation system in total or TABLE OF CONTENTS INDEX 973 in increments. The initial watering and all subsequent watering of the planting shall be done using the newly constructed irrigation system. The plant material may need temporary irrigation systems acceptable to the Engineer for the initial watering of large plant material over and above the designed irrigation system.
After the planting pits are refilled with amended soil, and the irrigation system has been installed and accepted, the planting pits shall be pre- watered by the irrigation system for a mini mum duration of twelve hours. Planting shall be accomplished during a three- day period starting two days following the prewetting as specified. Areas not planted during the three- day period shall be re- watered and allowed to dry as specified above. Planting shall not be done in soil that is excessively moist or otherwise in a condition not satisfactory for planting in accordance with accepted horticultural practice. Plants which are in containers, bare root, or balled and burlapped shall be planted and watered the same day the container, wrap, or moisture protection is cut. The contractor shall adequately water plants to maintain a healthy and vigorous growing condition during the planting period. Plants shall be removed from containers such that the root ball is not broken. Plants with broken root balls or with root balls that fall apart while being planted will be rejected. Plants shall be planted plumb and shall be centered in the planting pit or trench. All planting pits shall have vertical sides and flat bottoms. Backfill material shall be prepared soil conforming to the requirements of Subsection 806- 2.05 of the specifications or prepared topsoil conforming to the requirements of Subsection 806- 2.04 of the specifications. Backfill shall be carefully firmed around the roots or the ball of the plant so as to eliminate all air pockets and shall not be compacted around the roots or ball of the plants during or after planting operations. Clods or stones exceeding 2 inches in diameter and foreign matter deemed objectionable by the Engineer will not be allowed. All excess soil that has objectionable stones shall be disposed of off the project site in a manner acceptable to the Engineer. No additional payment will be made for the removal and disposal of objectionable stone, or soil containing foreign matter. Any excess soil which is not used to backfill the planting pits may be evenly distributed in the landscape areas if it will not interfe re with the TABLE OF CONTENTS INDEX 974 final grading of any landscape areas. All planting areas shall be graded as specified to facilitate proper watering of all material, and leave a generally smooth appearance after completion of planting. Plants shall be set to a depth such that , after backfilling and watering, the top of the root ball and the level of the backfill will match the surrounding grade as shown on the project plans. Any plant that settles more than 1- 1/2 inches below the specified grade shall be reset or replaced. A ny additional backfill material required shall be as specified in the Special Provisions and on the project plans. Immediately after planting, all plants shall be thoroughly irrigated until the backfill soil around and below the roots or the root ball of e ach plant is saturated.
If slings or cables are used to support stock during transporting and planting, the plant trunk shall be protected at the poi nts of contact with slings and cables with burlap, canvas, sections of automobile tire casing, or other suitable protective material. Cables shall be placed to maintain proper support and balance at all times. A tree spade may be used for digging and movi ng the stock. A thin layer of soil conditioner shall be placed in the planting hole before planting the stock with a tree spade. Dead fronds, certain live fronds, flower stalks and seed pods shall be removed from palm trees, leaving a minimum crown of six to eight tiers of live fronds on each tree. Crown fronds shall be pulled together and loosely, but securely, tied in an upward position to protect the heart of the tree. Fronds shall be tied with light manila rope or multiple strands of binder twine. F rond ties shall remain in place for a minimum of 60 days after planting. The contractor shall be responsible for preventing damage or death of the stock during moving operations and after planting is completed. Damaged stock shall be replaced with stock of the same species and of equal size. After planting, the contractor shall maintain all collected stock and local stock in established positions during construction and landscaping establishment periods. The contractor shall ensure that palms have been chemically sprayed with an approved preventative treatment to inhibit development of bud rot during the planting operation and during periods of high humidity and warm temperatures. The treatment shall be applied to allow deep penetration into the palm tree hearts. TABLE OF CONTENTS INDEX 975 Care shall be taken such that no palm tree is dropped or mishandled during the planting operations. Bending the palm tree trunk or causing uneven contact of the tree trunk with another surface may damage the palm tree heart and eventually kill the tree. 806- 3.05 Pruning and Staking: All plants shall be pruned in accordance with accepted horticultural practices. All dead and damaged twigs and branches shal l be removed in order to form each type of plant to the standard shape for its species. Trees shall be supported as shown on the project plans or as specified in the Special Provisions. Tree -stakes shall be driven vertically at least 6 inches into firm, undisturbed ground at the bottom of the planting pit or trench. Stakes shall be positioned to clear the root system without disturbing the integrity of the roots. Guying shall be as shown on the project plans or as directed by the Engineer. Tree ties and guy wires shall be periodically inspected and adjusted as necessary to prevent "girdling" or injury to tree trunks or branches. Trees shall be secured to the stakes with tree ties, after backfilling and prior to irrigating, as shown on the project plans and/ or as specified in the Special Provisions. 806- 3.06 Care and Protection of Trees, Shrubs and Plants: Prior to beginning work under Section 807 of the specifications, the contractor shall be responsible for maintaining and protecting all planting areas, as specified in Subsection 807- 3.02 of the specifications, including the care and protection of trees, shrubs and plants planted under this section. Such care and protection shall include, but not be limited to, the watering of stock; removal of construction trash and debris; eradicating and removing all weeds and undesirable vegetation as specified in the Special Provisions; repairing, adjusting or replacing stakes and guying; repairing weather damage or damage caused by the public; furnishing and applying sprays, dust and/or cages to combat vandalism, disease, insects and pests; and taking all precautions necessary to prevent damage from cold, frost, sunburn or other hazards. All existing undesirable grasses and weeds shall be eradicated with herbicides or manual methods during the construction phase, and disposed of by the contractor in accordance with Subsection 807- 3.02 of the specifications. The contractor shall remove and replace, at no additional cost to the Department, all dead plants and all plants that show signs of failure to grow or which are injured or damaged so as to render them unsuitable TABLE OF CONTENTS INDEX 976 for the purpose intended, as determined by the Engineer. The contractor may, with the approval of the Engineer, delay replacement of plants killed by frost until such time that frost is not imminent. Plants shall be staked as detailed on the project plans. All wire ties used on plant staking shall be stapled to stakes in a manner acceptable to the Engineer. Staking shall be driven into undisturbed soil below the planting pit bottom as detailed on the project plans. Rubber hoses on tree ties shall be a minimum of 6 inches in length at each wire loop. All tie wire exposed to tree trunks shall be covered with hose or other material approved by the Engineer. Any person or persons applying pesticides will be considered as doing so for hire and shall be licensed in accordance with the requirements of A.R.S. Title 3, Chapter 2, Article 6, Section 3- 377. The contractor shall notify the Engineer and obtain prior approval of the use of any chemi cals for weed eradication or control. The types of herbicide to be used and the methods of application shall conform to Environmental Protection Agency requirements, the labeling instructions, and shall be as approved by the Engineer. The contractor shal l keep a record of all applications, types of herbicide used such as pre- or post -emergent, rates and methods of application, and the dates and locations of such applications on forms supplied by the Engineer. A copy of this record shall be submitted to t he Engineer after each application. Pre-emergent herbicides or manual weed control shall be used on noxious weeds in planting areas located within the project limits; but noxious weed control within granite mulch, decomposed granite or rock mulch shall be as specified under those items of work. All areas shall be kept free of noxious weeds. All planting areas within the project limits shall receive an approved pre- emergent herbicide, as specified under Subsection 803- 3.02 of the specifications. The appli cation of herbicide shall include all areas not covered under other items of the specifications. The contractor shall pay special attention to the infestation of nut and bermuda grasses. Either of these items found in the planting pits of that material shall be grounds for immediate removal, disposal, and replacement of that item. The planting pit shall be excavated and inspected to assure complete eradication of any roots or rhizomes which may have grown into the area. All this work and material shall be the responsibility of the contractor, at no additional cost to the Department. 806- 4 Method of Measurement: Planting trees, shrubs and plants, and transplanting trees, shrubs and plants will be measured on a lump sum basis, except that when the bidding schedule sets forth specific items under this section on a unit basis, measurement will be made by the unit for each item designated in the bidding schedule. TABLE OF CONTENTS INDEX