PLANTINGS SECTION 911 620 SECTION 911 — PLANTINGS
911.1Description.
This work consists of providing and planting specified plants, shrubs, and trees and the replacement and cultural care of the material.
911.2Materials.
911.2.1 Plant Material.
variety. The plants shall have a normal habit of growth with well -developed branch systems and vigorous root systems. Provide sound, healthy, and vigorous plants, free from defects, disfiguration, injury, disease of any kind, insect eggs, borers, and any infestation. The plants shall have been growing under similar climatic conditions to those of the locality of the project for at least 2 years before planting. Prov ide plant material grown in a soil similar to the area where the plants are designed to be installed . Do not provide plants grown in a muck type soil or other foreign type.
requirements. Provide freshly dug plants. The Department will not accept heeled -in or cold storage plants with the exception of plant material delivered before planting as outlined in
Provide plants conforming to all sizes and measurements specified in the plant list provided with the contract. The Department will not accept plants that do not have a normal balance between height and spread. When the contract does not contain any requir ement or exact measurement, provide plants normal for the species and variety as listed in "American Standard for Nursery Stock" (ANSI Z60.1). Match plants as closely as possible where the contract requires symmetry. Measure plants for height and spread with the branches in the normal position. Measure the trunk diameter of all trees up to and including 4 -inches in diameter sizes at a point 6 -inches above the ground. Measure from 12 -inches above the ground level for larger sizes. If the tree branches are not in accordance with the required height, prune the lower branches, without leaving unsightly scars and damaging the trunk to ob tain the correct height. Do not prune branches for this effect before delivery to the site unless approved. The contractor may use plants larger in size than specified. For larger plants, provide with an earth ball or root spread proportionate to the incre ased size.
Provide certificates of inspection of plant materials required by federal, state, or other authorities with the shipment of plants. Provide complete information as to the location of all plants intended to supply and use. The Department reserves the right to inspect, tag, and approve all plants at the source of supply. This inspection and tagging shall not in any way eliminate the right of rejection at the project site. The engineer will inspect and approve plants before planting. The engineer may reject pl ants placed without prior inspection. Protect the plant materials according to best horticultural practices while in transit in to prevent drying or possible desiccation of plant tissue. PLANTINGS SECTION 911 621 The engineer will not accept plant material arriving at the site with broken or loose balls, or dry or insufficiently developed roots, and weak or thin plants that are damaged or defective, or do not comply with the contract. The engineer reserves the righ t to reject all unsatisfactory stock. Remove plant material the engineer deems unsatisfactory.
Plants shall conform to the nomenclature of "Standardized Plant Names" as accepted by the American Joint Committee on Horticulture Nomenclature, 1942 Edition. Names of varieties not included shall conform to names accepted in the nursery trade. Size and gr ading shall conform to those listed in AAN's American Standards for Nursery Stock. No substitutions are allowed except by written permission of the engineer .
The engineer, after receiving a written request from the contractor for substitution, will review and verify the non -availability of the specified plant and size. The engineer will direct the contractor to provide certification in the form of 5 letters fro m 5 independent growers who list the specified plant form in their most current catalog, stating that the item in question is not available. Upon receipt of the letters substantiating that a substitution is justified, the engineer will approve the contract or’s substitution request.
“The mitigation and post -planting monitoring plans shall be developed and implemented by a firm with demonstrated expertise in wetland creation activities.”
successful wetland woody and wetland herbaceous and seeding programs that have received final approval by the USACOE, or have on -site staff personnel who have managed successful wetland woody and herbaceous planting and seeding programs that have received final approval by the USACOE. Within 14 -days of a request from the Department, forward information indicating compliance with the experience requirement. 911.2.2 Trees. Provide trees with straight trunks according to their habit of growth and well branched and rooted. Shade trees of standard variety shall have a single leader and branched at 6 -feet to 8-feet height unless otherwise directed. 911.2.3 Shrubs.
systems capable of sustaining vigorous plant growth.
have a living terminal bud. Before installation, keep the cutting cool and moist to prevent desiccation. The engineer will not accept degraded, rotting, or dr ied out material. 911.2.4 Ground Cover and Herbaceous Perennials.
container size for a minimum of 6 -months unless otherwise approved or specified in the contract. PLANTINGS SECTION 911 622 B. Provide herbaceous plant material within containers a minimum of 6 -months old and that have grown within the specified container size for a minimum of 3 -months unless otherwise approved or specified in the contract. 911.2.5 Soil Mix.
of twigs, stones, hard lumps, roots, or any other undesirable materials. Moisten peat moss before use, but do not water to a saturated or puddled, unworkable cond ition. Peat moss shall show an acid reaction of 3.5 to 5.5 pH. Provide written certification from the manufacturer that the peat moss originates from sphagnum peat bogs.
sedge, sphagnum, or reed peat and be of such physical condition that it passes through a 2 -inch sieve. Provide humus free from sticks, stones, roots, and other objectionable materials. Samples taken at the source of supply shall have the following analysis: Table 911.2 -1. Soil Analysis Requirements Acidity Range 4.0 to 7.5 pH Minimum Water Absorbing Ability 200% by weight on oven -dry basis Minimum Organic Content 60% when dried at 221 EF (105 EC)
wood , metallic substances, glass, or other undesirable materials. 911.2.6 Fertilizer.
minimum guaranteed analysis. Table 911.2 -2. Fertilizer Analysis Requirements Total Nitrogen (N) Derived from urea -formaldehyde 7.0% water soluble nitrogen 13.0% water insoluble nitrogen 20.00% Available Phosphoric Acid (P2O5) Derived from calcium phosphate 10.0% Soluble Potash (K2O) Derived from potassium phosphate 5.00% PLANTINGS SECTION 911 623 Combined Calcium (Ca) Derived from calcium phosphate 2.60% Combined Sulfur Derived from ferrous and potassium sulfates 1.60% Iron Derived from ferrous sulfate 0.35%
label from the vendor or a testing laboratory as to the available nutrients contained in the fertilizer.
may allow use of fertilizer failing to meet the specified analysis if the contractor applies sufficient materials to comply with the specified nutrients per unit of measure. 911.2.7 Mulch.
engineer. The engineer may visually inspect mulching materials before delivery at the planting site. Mulch shall conform to the following requirements:
maximum size of 6 -inches. Ensure that the bark is relatively free of bark fines dust and undesirable materials.
Department's inspection representative. Do not provide wood chips that contain leaves, twigs, wood shavings, and sawdust, or other undesirable materials. Apply non -pelletized fertilizer, with analysis in accordance with Section 911.2.6.A, at the rate of 0.5 -pounds per square yard before wood chip placement.
certification for the chosen mulch. 911.2.8 Stakes, Guys, and Related Materials.
method approved by the engineer.
Provide stakes free from knots, rot, or other defects that impair strength.
911.2.9 Water. PLANTINGS SECTION 911 624 A. Provide clean water free of oil, salts, acids, alkalis, sugars, organics, or other undesirable materials. Where water is drawn from a surface source, enclose the intake to exclude silt, mud, organics, trash, or other foreign materials.
911.3Construction.
911.3.1 Planting Periods.
and from September 1 to November 30.
recommended by the manufacturer. The engineer will provide written approval for moving plants within this time period.
between March 1 and April 1.
depending on weather and soil conditions at the time and upon approval of the engineer after a written request. Planting outside the planting window does not relieve t he contractor of the guarantee. 911.3.2 Soil Mixture.
For each cubic yard of baled peat moss, or approved equal, add between 43 and 54 cubic yards, of planting topsoil for all plants except ericaceous material.
For each cubic yard of baled peat moss, or approved equal, add between 36 and 45 cubic yards, of planting topsoil for ericaceous plants. If providing peat humus instead of peat moss in the above mix, proportion the mixture with 1.8 cubic yards of peat humus for each cubic yard bale of peat moss specified for the above soil mix. Mix other approved equal materials, in accordance with the manufacturer’s recommendations, and upon written approval of the engineer.
advance notice to the engineer before preparing any soil mixture. For areas that will contain ground covers or herbaceous perennials, mix the soil in place, providing the existing topsoil is in accordance with Section 908.
PLANTINGS SECTION 911 625 1. For balled and burlapped, or container stock, position the plant in the hole, and backfill halfway up the root ball. Place the recommended number of fertilizer tablets evenly around the perimeter and adjacent to the root ball. Backfill, tamp, and water.
backfill halfway up the root medium. Place the recommended number of fertilizer tablets evenly around the perimeter and adjacent to the root medium. Backfill, t amp, and water.
specified for planting.
specified for planting.
the excavation.
911.3.3 Digging and Handling. Provide balled and burlapped plants with firm, natural balls of earth of ample proportions and diameters in accordance with in AAN's “USA Standards for Nursery Stock .” The engineer will reject plants with root balls cracked, broken, or crushed before or during planting operations. Keep roots constantly moist. Protect all plants by covering with canvas, wet straw, burlap, moss, or other material. Keep covered until ready for planting. Do not plant trees with frozen earth balls. Provide plant materials grown in containers for at least 6 months. Ensure that there are no signs of root bound or insufficient ratio of planting medium versus root mass. 911.3.4 Plant Locations. Place plants in accordance with the contract. Shift plant locations to avoid utilities, with the engineer’s approval. 911.3.5 Planting.
sides. Ensure that pits are deep enough that, when planted and settled, the root collar of the plant is at the same relation to finished grade as it w as to the soil surface where the plant was grown. With the approval of the engineer, the contractor may elect to plant wetland grown containerized shrubs on small mounds, raised no more than 2 -inches above the final grading elevation as shown in the contra ct.
location where the engineer determines an open pit will pose a potential hazard to pedestrians or traffic.
foundation. Set plants in the center of pits so the crown of the plant is level with the finished grade after allowing for watering and soil settlement. Fir mly tamp the soil mixture under and around the base of the ball to fill all voids. When partially backfilled and compacted, remove the burlap and any wire baskets from the sides and tops of the balls, and cut away leaving the burlap under the balls. Dispos e of burlap, wire baskets, and other containers from the jobsite at the end PLANTINGS SECTION 911 626 of each day. Fill the balance of the planting hole with the planting mixture and form a ring of earth around the plant to produce a dish for watering. Water all plants immediately after planting. For the initial watering, completely saturate the backfill i n the pits and beds on the same day as planting. Do not dump excavated material on grass without covering the grass with protection unless approved by the engineer.
inches. Mix peat moss, peat humus, or approved equal separately to obtain the proportion of ground cover or herbaceous perennial soil mixture specified in the co ntract. The root system of the plant determines the actual depth for individual plant excavation beyond the minimum excavation stated above for soil mixing. Backfill plants with the soil mixture and compact firmly around roots. Place a minimum of 2 -inches of approved mulch on a smooth and uniform grade.
Ensure that trees inspected and tagged at the nursery conform to AAN Standards, do not alter the natural habit or shape of the plant with additional pruning after inspection and tagging. Prune with sharp tools by workers skilled in this operation. Make all cuts flush, leaving no stubs. On all cuts over 3/4 -inch in diameter and on all bruises or scars on the bark, trace back and remove the injured cambium to living tissue. Smooth and shape all wounds to preserve the branch bark ridge.
as planting.
ball.
seeded areas clean. When planting in a previously planted area, clear debris, rubbish, subsoil, and remove waste materials from the site immediately upon completion. Rake ground surfaces smooth. Repair grassed areas disturbed during construction. 911.3.6 Plant Establishment.
and replacements in accordance with Section 911.3.5. The plant establishment period consists of one full growing season. Ensure that the plants remain alive and healthy during the plant establishment period. A growing season is the period from May 1 through September 30. The Department will inspect planting completed by May 1 the same year during the first week of October, weather permitting. The Department wi ll inspect any planting not completed by May 1 the following year during the first week of October, weather permitting. The engineer will direct the contractor to replace all dead or unhealthy plants identified within our inspection by December 1. The engineer’s approval of the replacements constitutes final acceptance.
use a pre - or post -emergent herbicide to control grass and broadleaf weeds. The contractor will be liable for any non -target damage resulting from a misapplication. Remove all weeds and grass , including the root, that emerge within all plant beds and within the saucer limits of individual plants, beginning 10 -days after the date of notification by the engineer. String trimmers are not considered to be an a cceptable alternative for weed removal. Prune and apply insecticides or PLANTINGS SECTION 911 627 fungicides as required, repair or replace stakes and guy straps and repair plant saucer washouts, as approved by the engineer.
appropriate planting season.
accordance with the contract.
including death and unsatisfactory growth. The Department will not require the warranty to cover defects resulting from incidents beyond the contractor’s cont rol, such as vehicular impacts or vandalism. Submit appropriate police reports, or other approved evidence verifying the cause of the damage, and the Department will take responsibility for replacement.
interruption, until completing watering of all the plants on the project. Use water in accordance with Section 911.2.9. The Department will allow use of tree waterin g bags as a part of the watering operation. Remove the tree watering bags before primary inspection .
911.4Method of Measurement.
The Department will not measure the quantity of planting. 911.4.1 Maintenance Bond.
form provided by the Department for Item 911000 - Plantings. Provide a maintenance bond that meets the following requirements:
contractor, as detailed in the breakout sheet.
completion of permanent planting work.
the State of Delaware by the Delaware Department of Insurance.
911.5Basis of Payment.
constitute full compensation for:
PLANTINGS SECTION 911 628 5. disposing of excess and waste materials;
watering as detailed on the breakout sheet, per 1,000 -gallons of water applied at each watering operation.
of water proposed for this contract. The lump sum price bid for 911000 – Plantings, is the sum of the total cost for all items listed.
for any additions or deletions.
satisfactorily completed. The Department will make no partial payment for any living plant unless the specified item is planted in accordance with these specificati ons. The Department will make no additional payment for using plants larger than specified.
engaged in actual planting and directly related work such as plant pit excavation, staking, and mulching. The Department will not charge contract time during the p lant establishment period described in Section 911.3.6.
above the desired finished grades and replacing dead or unhealthy plants, described in Section 911.3.6, as incidental to this item and will make no separate payment for that work.
the credit on the average wholesale value based on the difference between the specified size and the next smaller size. The average wholesale value needs su bstantiation with written submissions in accordance with Section 911.2.1.E. ITEM DESCRIPTION UNIT 911000 PLANTINGS LS
GENERAL SECTION 1000 629 DIVISION 1000 — MATERIALS
1000.1General .
Perform sampling, testing, and inspection of all materials included in this division in accordance with the guidelines set forth in the Department’s Materials Manual, latest edition, unless otherwise specified in the contract. Submit and track the proposed sources of all materials incorporated in the project. Material must conform as included and approved on the “source of supply.” All source approvals are conditional based on the continued production of the respective materials meeting the requirements of the contract. Refer to Sections 106.1 and 106.2 for more detailed information.