HomeMy WebLinkAbout3180-9All work shall be performed by a contractor with a C-27 license or greater. Work shall consist of furnishing
all materials, set -vices, and equipment necessary to completely install all landscape work as indicated on
the drawings and herein specified.
1.02 CITY INSPECTIONS & REQUIREMENTS
A. Inspections shall be performed by a City or County Representative at the following
tests. A 48 hour notice shall be given prior to anticipated inspections, Notify City or County of
commencement of landscaping - give anticipated timeline from start to finish.
Inspections shall be as follows:
1) Upon completion of finished grade, soil preparation
and final rake out
2) When trees and shrubs are spotted for planting, with the example of planting hole
for trees and one for shrubs.
3) Final hispection when planting and all other specified work has been completed.
B. All landscaping, irrigation and street trees shall be installed and maintained in accordance with City
County Codes, Ordinances, and Standard Requirements,
C. Material requirement for all plant material shall be #I grade of the California Nursery Industry
Certificate as issued by the agricultural commissioner of the county of origin.
1.03 GUARANTEE
A. All plant materials installed and workmanship performed under the contract shall be guaranteed
against any and all poor, inadequate or inferior materials and/or workmanship for a period of 365
days from the date of written final acceptance by City or County.
B. During the guarantee period, any material found to be dead, missing, or in poor condition shall be
replaced by the Contractor within ten (10) days of written notification.
C. Replacement shall be made in accordance with the original contract drawings and specifications.
D. Material and labor involved in replacing plant material shall be provided by the Contractor at no
additional cost to the City or County.
Contractor shall obtain agronomic soils tests covering all planting areas after completion of finish grading
and prior to start of soil preparation work.. Tests shall be perfanned by an approved agronomic soils testing
laboratory and shalt include a fertility and suitability analysis with written recommendations for soil
preparation and planting backfill mix. The soils report recommendations shall take precedence over the
minimum amendment and fertilizer application rates specified herein only when they exceed the specified
minimums.
Fertilizers and soil amendments may include any or all of the specific materials specified herein and shall
be applied at the rates indicated on the plans or in Part 2.06, BACKFILL MATERIAL and Part 3.02, SOIL
PREPARATION, herein.
A. Fertilizer: Shall be'Gro-Power Plus' and 'Gro -Power' 20 gr. planting tablets as manufactured by
Southern California Organic Fertilizer Co., Inc., telephone: (714) 750-3830. Or equal.
B. Organic Soil Amendment: Shall be nitrogen fortified redwood or cedar wood shavings and shall
contain a minimum of I % available nitrogen. Material containing manure or pine is unacceptable.
C. Inorganic Soil Amendment: Shall be agricultural grade iron sulfate.
All soil imported for backfill or as fill soil (if required) shall meet the following requirements: Backfill or fill
soil shall be from a source outside the limits of the project, selected by the Contractor and in compliance
with the requirements specified herein. The Conti -actor shall coordinate with the grading or general
contractor in the case of fill soil and submit a written report of a testing agency, per 1.04 Soil Test,
registered by the State prior to movement of soil. Soil shall have the same relative composition and
structure, a friable sandy loam character, and be free of roots, clods, and stones larger than 1 -inch in
greatest dimension, packets of coarse sand, noxious weeds, sticks, brush and other litter. It shall not be
infested with nematodes or other undesirable insects and plant disease organisms. Soil shall meet the
following additional requirements:
A. Gradation Limits. Sand - - 65 %, silt = 25 %, clay 10%, maximurn. The sand, silt and clay
gradation firnits shall be as defined in ASTM D422.
B. Permeability Rate. Not less thart 0.5 inches (13mm.) per hour nor more than 2 inches (51inni) per
hour when tested in accordance with ASTM D2434 or other approved methods.
C. Agricultural Suitability. The topsoil shall be suitable to sustain the growth of plants specified.
2,03 SEED (if applicable,_ see legend)
All seed used for lawn and/or ground cover plantings shall be labeled and shall be furnished in sealed
standard. containers. Seed which has become wet, moldy or otherwise damaged in transit or storage will
not be accepted.
A. Lawn: Seed rnix shall be per plan
Note: Thoroughly blend seed varieties prior to application.
2.04 HYPROM.ULCH MATEIUALS, (if applicable, see legend)
Water: General precautions should be observed when drawing water from sources other than pressure
main. Such water must be free of impurities.
Seed: Seed as specified in 2.03 above.
Mulch: Fiber shall be produced from cellulose such as wood pulp or similar organic material and shall be of
such character that it will disperse into a uniform slurry when mixed with `eater. Materials which inhibit
germination or growth shall not be present in the mixture.
Fertilizer: 'Gro -Power' organic fertilizer per 2.01 -A, above. Or equal.
Binding Agent: Dry powder organic concentrate, Ecology Controls M -Binder or equal. Available from
Robinson Fertilizer Co. (714) 538-3575.
2,05 PLANTS
All plants shall be true to name, and one of each bundle or tot shalt be tagged with the name and size of
plants in accordance with the standards of practice recommended by the American Association of
Nurserymen, and be No. I grade, healthy, disease free and have no physical damage.
Plant ground cover in areas as shown on plans, Ground cover plants (rooted cuttings) shall have been
grown in flats, and remain in those flats until transplanting.
All trees and shrubs supplied by Contractor shall be of the specified standard height and diameter set by
the American Standard for Nursery Stock. The height of the trees shalt be measured from the root crown to
the last division of the terminal leader and the diameter shall be measured six (6) inches above the crown
roots. The trees shalt stand erect without support. Root bound material is not acceptable. All plants of like
species shall be of uniform height, spread, and forrii.
2.06 BACKFILL MATERIAL
A. Topsoil used in the backfill material shall be a loamy, fertile, and friable soil and shall be free of
weeds and seed. Topsoil shall conform to Section 2.02, TOPSOIL, of these specifications.
B. Backfill material shall be prepared by blending the following materials and shall be used during
planting as shown in the planting details:
(1) 75% approved topsoil
(2) 25% organic soil amendment, nitrogen stabilized (woodshaviligs)
(3) 15 pounds 'Gro -Power Plus' organic fertilizer per cubic yard
(4) 2 pounds It -on sulfate
(5)'Gro-Power'planting tablets per manufactures specifications
C. All backfill material shall be bulk mixed, not individually mixed at each plant pit,
2.07 HEADERS, STAKES, AND TIES
A. Tree stakes shall be 2" dia. x 10 foot long straight grained treated lodgepole pine.
B. Tree ties shall be "Cinch Ties" manufactured by V,I.T. Co., Cerritos, California. (714) 871-2309,
or equal.
C. Root barriers shall be'Root Booster manufactured by Showtowri Ind., Inc., or equal.
D. Arbor guards shall be 'Trunk Cover - TP 128' manufactured by Showtown Ind,, Inc., at- equal.
tienw.3011RIN In,
The Contractor shall bring all planting areas to finished grades, filling as needed or removing surplus dirt,
removing rocks and debris over I inch in diameter, and floating to a smooth uniform grade.1 All areas shall
slope to drain. Flow lines shall be established to existing road curbs and/or a sidewalk as shown on the
plans and as directed. Final grade of all turf and ground cover areas shall be 1/2" inch below adjacent
surfaces after establishment,
3.02 SOIL PREPARATION
A, All landscape mounding, rough grading, land finished grading shall be completed prior to beginning
soil preparation.
B. Soil preparation shall begin with rototilling of all planting areas under grades of 2:1 to a minimum
depth of 8" prior to distributing soil amendments. Remove all rocks from top 4" of soil with size 3 4" or smaller.
C. The following soil amendments shall be added per 1,000 square feet to all planting areas under
grades of 2:1:
3 cu. yds. nitrogen stabilized organic arnendfinent derived from redwood shavings, fir,
or cedar shavings
200 tbs. organic soil amendment: 'Gro -Power Plus' (5-3-1) organic fertilizer (to be
incorporated to a minimum 9" depth following leaching)
3.03 PLANTING
A, Planting is not recommended from December through February in all areas and also is not
recommended from July through August. The Contractor assumes all responsibility for planting at
these times.
B. Trees and Shrubs:
Plant holes shall be dug to size as indicated in the detail drawings, Before trees are set in the
holes, a water test should be made as follows: All plant holes shall be filled to the brim with water
and allowed to drain before any planting is done. If water does not drain out of hole within 24
hours, conduct soil test..
Plants shall be planted at such a depth that the crown roots bear the same relative position to finish
grade as they did to the soils where they were grown, When Maintenance Period ends and
watering basin's earth berms are removed, wider no circumstances level dirt so that it buries crown
roots.
Backfill after planting shall be compacted carefully into place without injuring the roots of the tree or
breaking up the ball of earth surrounding tile roots.
C. Ground Cover:
Ground cover plants shall be planted in staggered rows, evenly spaced and at intervals called out
on the drawings, Each plant shall be planted with its proportionate amount of the flat soil in a
.manner that will insure a minimum disturbance to the root systen-ts, The cuttings shall be planted
sufficiently deep to cover all roots. Root crown should bear the same relationship to soil as it did in
the flat. Immediately sprii-Ade after each planting until entire area is soaked to the full depth of each
hole.
D. Mulch: Ground Cover & Shrub Areas
Apply mulch in all ground cover & shrub areas after planting to I inch depth ofinediuni barkchips or
shavings of sufficient size not to be effected by wind.
3.04 TREE STAKING
Stake trees as per planting details. No metal wire shall circle any part of any tree.
3.05 WEED ERADICATION
A. Weed Eradication Procedures Prior to Hydrosceding new areas and Planting of Ground Cover
are -as infested with bermuda grass or other weed infestations:
(1) Manually remove all existing vegetation completely (grub out roots) unless otherwise
shown on the plans and legally dispose of it off-site.
(2) Fertilize all planting areas with urea 35-0-0 commercial fertilizer at the rate of .5 lbs. (1 /2
lb.) per 1,000 square feet,
(3) Water all planting areas thoroughly to a minimum depth of 6" for a period of two (2)
consecutive weeks to germinate all residual weed seeds.
(4) Discontinue watering for two (2) consecutive days., Then apply a non-selective broad
spectrum systemic herbicide per manufacturer's directions. No water shall be applied for a
minimum of four (4) days following application of contact weed killer.
(5) Allow a sufficient period of time to insure that all weeds are dead and remove.
(6) Begin the hydroseeding operations or planting on all areas as specified herein.
All specified materials shall be delivered to the site in the supplier's original unopened containers hearing
proper and accurate labeling.
3.06 HYDROSEEDING
A. Mixing of hydroseed:
Mixing of hydroseed slurry: Mixing shall be performed in a tank, with a built-in continuous agitation
and recirculation system of sufficient operation capacity to produce a homogenous slurry of fiber,
M -Binder, seed, fertilizer, and water in the designated unit proportions.
Fiber 1,800 tbs. per acre
Ecology M -Binder 100 tbs. per acre
Seed (see plant legend) (see plant legend) lbs. per acre
Water 3,000 gal. per acre
'Gro -Power' organic fertilizer 1,000 tbs. per acre
With agitation system operation at part speed, water shall be added to the tank, good recirculation
shall be established, Materials shall be added in such a manner that they are uniformly blended
into the mixture in the following sequence.
When tank is 1/3 filled with water:
Add binding agent - 1/2 acre requirement
Add 3 - 50 lb, bales of fiber
Add seed - 1/2 acre requirement
Add'Gro-Power' - 1/2 acre requirement
Agitate mixture at full speed when the tank is half-filled with water.
Add remainder fiber requirement before, tank is 3/4 full, and add remainder seed, M -Binder, and
'Gro -Power' per amounts listed above. Slurry distribution should begin immediately.
Area to be bydroseeded shall be moistened to a depth of six inches just prior to application.
B. Application:
Hydroseed slurry shall be applied wider high pressure evenly and result in a uniform coat on all
areas to be treated. Care shall be exercised to assure that plants in place are not subjected to the
direct force of an application.
Slurry shall be immediately removed from walks, pavement, structures, and ground cover areas
that are inadvertently sprayed,
All bare spots shall be reseeded by the Contractor within 15 days. The Contractor will be
responsible for all reseeded areas for as long after seeding as necessary until acceptable
germination and establishment is realized.
3.07 WATERING
A. It shall be the Contractor's responsibility to maintain a balance watering program to ensure proper
growth until final acceptance of the work.
B. Immediately after planting, apply water to each tree, shrub at- vine. Apply water in a moderate
stream in the planting hole until the material about the roots is completely saturated from the
bottom of the hole to the top of the ground.
C. Irrigation:
(1) Contractor shall property and completely maintain the irrigation system. A balance water
program shall be maintained to ensure proper growth until final acceptance of the work.
Over watering is as unacceptable as under watering.
(2) All controllers are to have each station individually adjusted on a monthly basis. System
shall be set considering the application rate each area is capable of receiving. The system
shall operate on short intervals, with the cycle repeating at a later time to reduce runoff.
(3) Controller shall be programmed to operate during time of least evaporation and wind
turbulence, generally 2 a.m. to 10 a.m.
108 MAINTENANCE
All areas landscaped by the Contractor under this contract shall be maintained by him for a period of not
less than 90 days from the date of written acceptance for start of maintenance,
A. Start of maintenance criteria:
(1) Maintenance period shall not start until all elements of the project are completed in
accordance with the contract documents.
(2) Power to remote controllers shall be established prior to the beginning of the maintenance
period.
(3) Written acceptance by the City or County Representative must be obtained prior to the
beginning of the maintenance period.
B. End of Maintenance:
(1) On satisfactory completion of the 90 day (mini-inum) maintenance period, the City's or
County's Representative will inspect the project for final acceptance.
(2) Deficiencies noted during inspection shall extend the maintenance period until all are
corrected.
(3) End of maintenance shall occur only on written acceptance by the City or County.
(4) Pre -emergent herbicide should be applied at end of maintenance period after hydroseed
completes germination in all areas.
C. During the maintenance period provide all watering, weeding, fertilizing, and cultivation, and spraying
necessary to keep the plants and turf in a healthy growing condition and to keep the planted areas
neat, edged, and attractive. All trees and shrubs shall be pruned as necessary to encourage new
growth and eliminate rank sucker growth, All pruning to be per NAA Standards, Old wilted flower's
and dead foliage shall be immediately pinched or cut off. Shrubs shall not be sheared.
D. The Contractor shall retain a Certified Arborist to inspect conditions of mature trees impacted by
roadway widening. Arborist shall make monthly report to City or Comity regarding condition of
trees during maintenance period.
E. After planting and during the maintenance period, in the event that trees exhibit iron chlorosis
symptoms, apply FE 138 Geigy of equivalent at manufacturer's recommended rates.
F, Should the appearance of any plant indicate weakness, that plant shall be replaced immediately
with a new healthy plant. At the end of the maintenance period, all plant materials shall be in a
healthy, growing condition and spaced as indicated on the plans.
G. Lawns (if applicable) shall be mowed and clippings removed on a weekly basis, Cut lawns at least 2 1/2
inches during warm seasons and reduce to 2 inches during winter or cooler season. Avoid
retrieving more than 1/3 of the leaf area of blade at any one time. Alternate mowing pattern to
avoid rutting lawns,
H. Trim lawn edges (if applicable) adjacent to walks, curbs, paved areas, buildings, shrub and tree
areas every two weeks, or more often if need to maintain a neat and well defined appearance.
1. Damage to planting areas shall be repaired immediately and throughout the maintenance period.
J. Remove watering basin's earth berms. Under no circumstances, level dirt so that it buries the
plant's crown roots,
K. Miscellaneous Maintenance Items:
(1) Depressions caused by vehicles, bicycles, soil settling or foot traffic shall be filled and
leveled. Replant damaged areas.
(2) Exterminate gophers and moles, and repair damage as above.
(3) The Contractor shall apply 'Gro -Power' organic fertilizer at a rate of 25 pounds per 1,000
square feet, for a minimum of 2 applications. The first application shall be between the 25th
and 30th day of the maintenance period and the second application between the 75th and
80th day.
(4) Debris and trash shall be removed from the site weekly at a minimum.
(5) Further herbicide applications and hand weeding will be required if major weed infestation
occurs, to be at the descretion of the City or County.
3.09 DISEASE AND PEST CONTROL
Throughout the maintenance period, all plants shall be maintained in a disease and pest free condition. A
licensed peat control operator shall be retained by the Contractor to recommend and apply all pesticides,
herbicides, and fungicides.
3.10 CLEANUP
Upon completion of the work, the Contractor shall smooth all ground surfaces; remove excess materials.,
rubbish, debris, etc.; sweep adjacent streets, curbs, gutters, walkways, and trails; and remove construction
equipment from the premises.
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