Art. 253.15 Planting Perennial Plants manner that plant holes are uniformly saturated without allowing the water to flow beyond the periphery of the bed. The plants to be watered and the method of application shall be approved by the Engineer. The Contractor shall not be relieved in any way from the responsibility for unsatisfactory plants due to the amount of watering.
b.During the period of establishment, weeds and grass growth shall be removed from within the earthen saucer of individual trees and from the area within the mulched plant beds. This weeding shall be performed twice during each of the months of May through September. The Contractor shall not be relieved in any way from the responsibility for unsatisfactory plants due to the extent of weeding. The weeding may be performed in any manner, provided the weed and grass growth, including their roots and stems, are removed from the area specified. Mulch disturbed by the weeding operation shall be replaced to its original condition. Debris which results from this operation shall be removed from the right-of-way at the end of each day.
253.16 Method of Measurement. This work will be measured for final
payment, in place, after the period of establishment. Trees, shrubs, evergreens, and vines will be measured as each individual plant. Seedlings will be measured in units of 100 plants.
253.17 Basis of Payment. This work will be paid for at the contract unit price
per each for TREES, SHRUBS, EVERGREENS, or VINES, of the species, root type, and plant size specified; and per unit for SEEDLINGS. Payment will be made according to the following schedule.
a.Initial Payment. Upon completion of planting, mulch covering, wrapping, and bracing, 90 percent of the pay item(s) will be paid.
b.Final Payment. Upon inspection and acceptance of the plant material, the remaining ten percent of the pay item(s) will be paid. SECTION 254. PLANTING PERENNIAL PLANTS
254.01 Description. This work shall consist of furnishing, transporting, and
planting perennial plants.
254.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Bulb Type ...................................................................................... 1081.02(a)
b.Ornamental Type ........................................................................... 1081.02(b)
c.Prairie Type ................................................................................... 1081.02(b)
d.Wetland Emergent Type ................................................................ 1081.02(b)
e.Sedge Meadow Type ..................................................................... 1081.02(b)
f.Woodland Type .............................................................................. 1081.02(b)
g.Mulch ............................................................................................. 1081.06(b) Planting Perennial Plants Art. 254.06
254.03 Planting Time. Planting times for the various types of perennial plants
shall be as follows.
a.Bulb Type. Bulb type plants shall be planted between October 15 and November 15.
b.Ornamental Type, Prairie Type, Wetland Emergent Type, and Sedge Meadow Type plants shall be planted between May 1 and June 15 or between August 15 and September 15.
c.Woodland Type plants shall be planted between April 1 and May 15.
254.04 Transporting and Storing Plants. The Engineer will inspect the
plants at the work site at the beginning of each planting day and reject any material that is not properly packaged (including clear labeling by species) or that is not in a firm, moist, or viable condition. Any plants remaining at the end of the day shall be removed from the work site and properly stored by the Contractor. Before planting, sufficient water shall be added to potted plants to ensure that the soil around the roots is not dry and crumbly when the plants are removed from the pots.
254.05 Layout of Planting. When plants are specified to be planted in
prepared soil planting beds, the planting bed shall be approved by the Engineer prior to planting. If no prepared soil planting bed is specified, the plants shall be planted in areas that have existing cover or have been seeded and mulched or sodded. Where perennial plants, except bulb type plants, shall be planted, the planting beds shall be delineated with selective mowing stakes. Selective mowing stakes shall be according to Article 250.08.
254.06 Planting Procedures. The spacing of the plants shall be as shown on
the plans, or as directed by the Engineer, to uniformly fill the planting beds. Individual plants within the beds shall be planted as follows.
a.Bulb Type. Bulb type plants shall be planted to a depth of 6 in. (150 mm) in turf areas or prepared beds.
b.Ornamental Type, Prairie Type, Wetland Emergent Type, Sedge Meadow Type, and Woodland Type. When planted in prepared soil planting beds, these plants shall be planted by a hand method approved by the Engineer. When planted in existing turf, the planting area shall be mowed to a maximum height of 2 in. (50 mm). In existing cover, or seeded and mulched or sodded planting areas, a 12 in. (300 mm) diameter planting area for individual plants shall be prepared. The existing cover, or seed and mulch shall be cut and removed from the 12 in. (300 mm) diameter planting area and the soil within the planting area loosened to a depth of 6 in. (150 mm). The plants shall be planted within the planting area and immediately watered with at least 1 gal (5 L) of water per plant. Art. 254.07 Planting Perennial Plants
254.07 Mulching. Within 24 hours, the plants shall be mulched with 2 in.
(50 mm) of a fine grade mulch meeting the approval of the Engineer. Care shall be taken to place the mulch in a way that does not smother the plants. When plants are planted in prepared soil planting beds, the entire bed shall be mulched. Bulb type plants planted in existing turf need not be mulched.
254.08 Period of Establishment. Period of Establishment for the various
types of perennial plants shall be as follows.
a.No period of establishment will be required for bulb type plants.
b.Perennial plants must undergo a 30 day period of establishment. Additional waterings shall be performed at least once within every seven days for four weeks following installation. Water shall be applied at the rate of 2 gal/sq yd (9 L/sq m). Should excess moisture prevail, the Engineer may delete any or all of the additional watering cycles. In severe weather, the Engineer may require additional waterings. Watering of plants in beds shall be applied in such a manner that all plant holes are uniformly saturated without allowing the water to flow beyond the periphery of the bed. At the end of the period of establishment, the Contractor will be permitted to replace any unacceptable plants and shall thoroughly weed all the beds.
254.09 Method of Measurement. This work will be measured for payment in
units of 100 perennial plants of the type and size specified. Measurement for payment of this work will not be performed until at the end of the 30 day establishment period for the replacement planting. Only plants that are in place and alive at the time of measurement will be measured for payment, except that if fewer than 25 percent of the plants are acceptable, a quantity equal to 25 percent of the number of units of plants originally planted will be considered measured for payment. Selective mowing stakes will be measured for payment as each in place.
254.10 Basis of Payment. This work will be paid for at the contract unit price
per unit for PERENNIAL PLANTS, of the type and size specified. Selective mowing stakes will be paid for at the contract unit price per each for SELECTIVE MOWING STAKES. Temporary Erosion and Sediment Control Art. 280.03 EROSION CONTROL SECTION 280. TEMPORARY EROSION AND SEDIMENT CONTROL
280.01 Description. This work shall consist of constructing, maintaining,
removing, and disposing of temporary erosion control systems.
280.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Bale Stakes .................................................................................... 1081.15(a)
b.Fence Stakes .................................................................................. 1081.15(b)
c.Hay or Straw Bales ........................................................................ 1081.15(c)
d.Fence ............................................................................................. 1081.15(d)
e.Aggregate ...................................................................................... 1081.15(e)
f.Silt Filter Fence .................................................................................. 1080.02
g.Temporary Mulch Material ................................................................. 1081.06
h.Rolled Excelsior .............................................................................. 1081.15(f)
i.Temporary Erosion Control Seeding............................................... 1081.15(g)
j.Inlet Filters ...................................................................................... 1081.15(h)
k.Filter Fabric ........................................................................................ 1080.03
l.Urethane Foam/Geotextile .............................................................. 1081.15(i)
m.Above Grade Inlet Filters (Fitted) .................................................... 1081.15(j)
n.Above Grade Inlet Filters (Non-Fitted) ............................................ 1081.15(k) CONSTRUCTION REQUIREMENTS
280.03 General. The Contractor shall name a person at the preconstruction
meeting who shall be on the jobsite during construction and who shall be responsible for ensuring the erosion control work is completed in a timely manner. The Contractor and the Department shall schedule and conduct a jobsite inspection to review and designate the locations and types of erosion control systems to be placed. This inspection shall be conducted prior to beginning any work which will disturb existing drainage or require erosion control. Erosion control systems shall be installed prior to beginning any activities which will potentially create erodible conditions. Erosion control systems for areas outside the limits of construction such as storage sites, plant sites, waste sites, haul roads, and Contractor furnished borrow sites shall be installed prior to beginning soil disturbing activities at each area. These offsite systems shall be designed by the Contractor and be subject to the approval of the Engineer. The temporary erosion and sediment control systems shown on the plans represent the minimum systems anticipated for the project. Conditions created by the Contractor’s operations, or for the Contractor’s convenience, which are not covered by the plans, shall be protected as directed by the Engineer at no additional cost to the Department. Revisions or modifications of the erosion and sediment control systems shall have the Engineer’s written approval.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 141–144 of 1,217. View official source ↗