**November 21, 1997**

**Contract \# TW-0928**

**SPECIAL SPECIFICATION**

**SECTION 02950-S**

**[TREES, PLANTS, AND GROUND COVERS]{.underline}**

[PART 1 - GENERAL]{.underline} Page

1.01 Description of Work 2

1.02 References 2

1.03 Quality Assurance 3

1.04 Submittals 4

1.05 Delivery, Storage and Handling 5

1.06 Job Conditions
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1.07 Warranty
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[PART 2 - PRODUCTS]{.underline}

2.01 Plant Materials
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2.02 Soil Amendments and Surfacings
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2.03 Planting Backfill Mixture
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2.04 Miscellaneous Landscaping Materials
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[PART 3 - EXECUTION]{.underline}

3.01 Examination
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3.02 Preparation
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3.03 Installation
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3.04 Field Quality Control
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3.05 Maintenance
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3.06 Cleanup and Protection
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3.07 Inspection and Acceptance
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**SPECIAL SPECIFICATION**

**SECTION 02950**

**[TREES, PLANTS, AND GROUND COVERS]{.underline}**

[PART 1 - GENERAL]{.underline}

1.01 [DESCRIPTION OF WORK]{.underline}

> A. This Section includes provisions for the following items:
>
> 1\. Trees.
>
> 2\. Shrubs.
>
> 3\. Plants.
>
> 4\. Ground cover.
>
> 5\. Soil amendments.
>
> 6\. Initial maintenance of landscape materials.
>
> B. Related Sections: The following sections contain requirements that
> relate to this Section.
>
> 1\. Underground irrigation system is specified in Division 2 Section,
> \"Underground Irrigation System\".
>
> 2\. Excavation, filling, and rough grading required to establish
> elevations shown on drawings are specified in Division 2 Section
> \"Earthwork\".

1.02 [REFERENCES]{.underline}

> A. The following publications are referenced in this Section:
>
> 1\. Dirr, Michael A. 1983. Manual of Woody Landscape Plants Stipes
> Publishing Co., Champaign, IL.
>
> 2\. Krussmann, G. 1976 Manual of Cultivated Broad Leafed Trees and
> Shrus, Vol I, II and II. Timber Press, Beaverton, OR.
>
> 3\. Krussmann, G. 1985. Manual of Cultivated Conifers. Timber Press,
> Beaverton, OR.
>
> 4\. Brenzel, K. 1995. Western Garden Book. Sunset Publishing Corp.,
> Menlo Park, CA.
>
> 5\. American National Standards Institute (ANSI), American Standard
> for Nursery Stock; American Association of Nurserymen, Inc., ANSI Z60,
> 1-1980.
>
> 6\. ANSI, Safety Requirements for Tree Pruning, Trimming, Repairing or
> Removal, ANSI Z133, 1-72.
>
> 1.03 [QUALITY ASSURANCE]{.underline}
>
> A. Installer Qualifications: Licensed landscape contracting firm with
> not less than 5 years experience in the type and amount of work
> required in the Section.
>
> B. Source Quality Control:
>
> 1\. General: Ship landscape materials with certificates of inspection
> required by governing authorities. Comply with regulations applicable
> to landscape materials.
>
> 2\. Do not make substitutions. If specified landscape material is not
> obtainable, submit to the SDR proof of nonavailability and proposal
> for use of equivalent material.
>
> 3\. Analysis and Standards: Package standard products with
> manufacturer\'s certified analysis. For other materials, provide
> analysis by recognized laboratory made in accordance with methods
> established by the Association of Official Agricultural Chemists,
> wherever applicable.
>
> 4\. Trees and Shrubs:
>
> a\. Label each tree, shrub and ground cover with securely attached
> waterproof tag bearing legible designation of botanical or common
> name.
>
> b\. Grade plant material in accordance with the codes and standards of
> American Association of Nurserymen. Use nomenclature conforming to
> References above. If names are not present in these listings, conform
> to accepted botanical nomenclature in the nursery trade.
>
> 5\. Planting Backfill Mixture: Test organic portion of the planting
> backfill mixture at an approved soil testing laboratory. Test to
> verify characteristics listed under \"Products\" portion of this
> specification and include recommendations from the testing laboratory.
> The SDR may also test the final product as delivered or installed to
> verify the mixture matches the listed characteristics and the
> submitted soil report. Test data may up to one year old.
>
> a\. Acceptable Backfill Testing Laboratories:
>
> \(1\) IAS (Inter Ag Services)
>
> 2643 East University Drive
>
> Station 113
>
> Phoenix, AZ 85034
>
> \(602\) 273-7248
>
> \(2\) ASSAGAI Labs
>
> P. O. Box 90430
>
> Albuquerque, NM 87199-0430
>
> \(505\) 345-8964
>
> 6\. Inspection: The SDR may inspect trees, shrubs and ground covers
> either at place of growth or at site before planting, for compliance
> with requirements for genus, species, variety, size and quality. The
> SDR retains right to further inspect plant material for size and
> condition of balls and root systems, insects, injuries and latent
> defects, and to reject unsatisfactory or defective material at any
> time during progress of work. Remove rejected trees or shrubs
> immediately from project site.

1.04 [SUBMITTALS]{.underline}

> A. Samples:
>
> 1\. Submit a one-eighth cubic foot sample of each type of mulch for
> approval.
>
> B. Plant and Material Certifications:
>
> 1\. Manufacturer\'s or vendor\'s certified analysis and material
> safety data sheets for soil amendments, herbicides, and fertilizer
> materials.
>
> 2\. Planting Backfill Mixture: Submit test results to the SDR prior to
> delivery.
>
> C. Maintenance Manuals:
>
> 1\. Submit two copies of typewritten instructions recommending
> landscape maintenance procedures to be followed by the SDR for one
> full year. Write instructions specifically for this project and note
> tasks by site area. Submit prior to expiration of required maintenance
> period.
>
> 2\. Record Drawings: Submit record prints with any variations from the
> plans clearly and professionally marked in red pencil.
>
> D. Submit all of the above in accordance with Specification 1300.

1.05 [DELIVERY, STORAGE AND HANDLING]{.underline}

> A. Delivery and Storage of Materials:
>
> 1\. The SDR will inspect and accept plant materials prior to delivery
> to site and incorporation into the work.
>
> 2\. Packaged Materials: Deliver packaged materials in containers
> showing weight, analysis and name of manufacturer. Protect materials
> from deterioration during delivery and while stored at site.
>
> 3\. Plant Backfill Materials: Collect and provide load tickets to the
> SDR for each delivery. List the following information on the ticket:
>
> a\. Source of material.
>
> b\. Approximate volume of load.
>
> c\. Date of delivery or loading.
>
> d\. Typed name of individual representing the source.
>
> e\. Inked original signature of individual representing the source.
>
> f\. Area of site of the product delivery.
>
> 4\. Trees and Shrubs: Provide freshly dug or containerized trees and
> shrubs. Do not prune prior to delivery. Do not bend or bind-tie trees
> or shrubs in such manner as to damage bark, break branches or destroy
> natural shape. Provide protective covering during delivery. Do not
> drop balled and burlapped stock during delivery. Handle
> container-grown materials by container only.
>
> 5\. Deliver trees and shrubs after preparations for planting have been
> completed and plant immediately. If planting is delayed more than 6
> hours after delivery, set trees and shrubs in shade, protect from
> weather and mechanical damage, and keep roots moist.
>
> B. Handling Materials
>
> 1\. Lift trees only by methods that will not damage bark. Lift trees 3
> inches in caliper and larger with chains triangulated around the
> rootball. Do not lift trees 3 inches in caliper or larger by straps
> around the trunk.
>
> 2\. Do not remove container-grown stock from containers until planting
> time.

1.06 [JOB CONDITIONS]{.underline}

> A. Existing Conditions:
>
> 1\. Utilities: Determine location of underground utilities and perform
> work in manner which will avoid possible damage. Hand excavate as
> required. Maintain grade stakes set by others until removal is
> mutually agreed upon by parties concerned.
>
> 2\. Excavation: When conditions detrimental to plant growth are
> encountered, such as rubble fill, adverse drainage conditions, or
> obstructions, notify the SDR before planting.
>
> B. Sequencing and Scheduling:
>
> 1\. Planting Time: Proceed with and complete landscape work as rapidly
> as portions of site become available, working within seasonal
> limitations for each kind of landscape work required.
>
> 2\. Plant or install material during normal planting seasons for each
> type of landscape work required. Correlate planting with specified
> maintenance periods to provide maintenance from date of substantial
> completion until final acceptance.
>
> 3\. Determine the acceptability of subgrade preparation prior to the
> start of landscaping work. Protect all existing items to remain and
> new work of other trades to ensure proper timing of each phase of
> work.

1.07 [WARRANTY]{.underline}

> A. Warranty trees, shrubs and ground cover through specified
> maintenance period and until final acceptance.
>
> B. Warranty trees, shrubs and ground cover for a period of one year
> after date of final completion, against defects including death and
> unsatisfactory growth as determined by the SDR, unless defects are due
> to SNL\'s negligence in following the Contractor\'s recommended
> maintenance procedure.
>
> C. Remove and replace trees, shrubs or other plants found to be dead
> or in unhealthy condition during warranty period. Replace plant
> materials during the dormant season following the end of warranty
> period or as directed by the SDR. The dormant season is defined as
> September 30 through May 1. Replace trees and shrubs which are in
> doubtful condition at the end of the warranty period; unless, in
> opinion of the SDR, it is advisable to extend warranty period for a
> full-growing season.

[PART 2 - PRODUCTS]{.underline}

2.01 [PLANT MATERIALS]{.underline}

> A. General:
>
> 1\. Provide trees, shrubs and plants of quantity, size, genus,
> species, and variety shown and scheduled for landscape work and
> complying with recommendations and requirements of ANSI Z60.1
> \"American Standard for Nursery Stock\" unless specific approval is
> obtained for particular plant material.
>
> 2\. Provide healthy, vigorous stock, grown in recognized nursery in
> accordance with good horticultural practice and free of disease,
> insects, egg, larvae, and defects such as knots, girdling roots,
> sun-scald, injuries, abrasions, or disfigurement.
>
> 3\. Size: Equal to or greater than the minimum size indicated. Remove
> undersized plants prior to substantial completion.
>
> 4\. Container and Boxed Stock: Grown in its delivery container for not
> less than six months for shrubs and one year for trees, but for not
> more than two years. Rootbound material is unacceptable.
>
> B. Trees: Provide container or nursery grown (not collected or
> plantation grown) trees 2-inch caliper and larger from an approved
> nursery. The SDR will tag trees at the nursery unless otherwise
> indicated. Provide trees that are first-class representatives of their
> species, well-shaped and full, with straight and plumb trunks. Trees
> with irregular branching patterns or with branching patterns more
> highly developed on one side than on the other sides shall not be
> accepted. **[Trees with double leaders or trees that have been
> \"headed back\" or \"topped\" are unacceptable.]{.underline}** The SDR
> reserves the right to reject any trees not meeting these criteria.
> Balled and burlapped (B&B) material wrapped with plastic burlap or
> plastic twine is unacceptable. Properly root prune B&B material.
> Acceptance at nursery does [not]{.underline} preclude the possibility
> of rejection of material on site.
>
> C. Deciduous Shrubs: Provide shrubs as scheduled, with not less than
> the minimum number of canes required by ANSI Z60.1 for the type and
> size of shrub required. Provide container grown deciduous shrubs.
>
> D. Coniferous and Broadleafed Evergreens: Provide evergreens of sizes
> shown or listed, nursery grown except for Ponderosa and Pinon pines.
> Provide Grade XX evergreen trees. Provide container grown or balled
> and burlapped evergreen shrubs.
>
> E. Ground Cover: Provide plants established and well rooted in
> removable containers or integral peat pots, with not less than minimum
> number and length of runners required by ANSI Z60.1 for the pot size
> shown or listed.

2.02 [SOIL AMENDMENTS AND SURFACINGS]{.underline}

> A. Commercial Fertilizers: Subject to compliance with State and
> Federal regulations, the following fertilizers shall be used:
>
> 1\. Actual Nitrogen: 2 pounds per 1000 square feet.
>
> 2\. Actual Phosphate: 2 pounds per 1000 square feet.
>
> 3\. Actual Potassium: 2 pounds per 1000 square feet.
>
> 4\. Agricultural Sulfur: 4 pounds per 1000 square feet.
>
> 5\. Root Stimulant: \"Superthrive\"; available from Southwest Seabeach
> Inc.
>
> B. Enzymes: Subject to compliance with State and Federal regulations,
> EPA-NCP (National Contingency Program) and NM Environmental Department
> groundwater discharge acceptance of approved live organisms/enzymes,
> manufacturers offering products which may be incorporated in the work
> include, but are not limited to, the following:
>
> 1\. SuperBio as provided by Organic Technology Inc., 12017 Skyline NE,
> Suite B, Albuquerque, New Mexico 87123, (505) 291-1100, or 291-1400,
> or facsimile at 271-1600 is considered approved. Apply at a rate of
> 1/2 gallon per 1000 square feet of Planting Backfill Area. Mix into
> subgrade and loosened soil. Provide with a 20% solution of humic acid
> integral with the SuperBio.
>
> C. Super Absorber: Provide and install a super absorber. Super
> absorber shall be a cross linked polyacrylamide. Polyacrylate
> materials are not acceptable. Apply at a rate of 5 pounds per 1000
> square feet of planting backfill mix. The following is considered
> approved:
>
> 1\. Stockosorb : Organic Technology, Inc.
>
> 12017 Skyline NE, Suite B
>
> Albuquerque, New Mexico 87123
>
> \(505\) 291-1100, or 291-1400, or facsimile at 271-1600
>
> 2\. Polyacrylamide : Western Polyacrylamide, Inc.
>
> P.O. Box 790
>
> Castle Rock, Colorado 80104
>
> \(303\) 688-3814
>
> 3\. Terra-Sorb HB : American Excelsior Co.,
>
> 4018 Edith Boulevard., NE
>
> Albuquerque, New Mexico 87107
>
> \(505\) 345-7807
>
> D. Mulch: Provide mulch material as indicated on the drawings.
>
> 1\. Gravel: Clean, fractured, and ¾" in diameter. Material to be Santa
> Ana Tan as sold by Western Mobile Inc. or an approved equivalent brown
> aggregate.
>
> 2\. Crusher Fines: Greyish-brown crushed stone ranging from dust to
> 3/8" diameter. Material to be Santa Ana Tan Crusher Fines as sold by
> Western Mobile Inc. or an approved equivalent brown crusher fine.
>
> 3\. Cobble: Stones not less than 4 inches in any direction and not
> more than 8 inches in any direction with less than 15% broken
> fragments. Color to be gray with tan colors. Material shall be from
> the Santa Ana pit and as sold by Western Mobile Inc. or an approved
> equivalent cobble.
>
> 4\. Bark: Shredded ground fir, hemlock or ponderosa bark of uniform
> color and free of weeds, seed, sawdust, wood splinters, resin tannin,
> wood fiber, or other compounds detrimental to plant life. Provide bark
> mulch consisting of long shredded pieces that interlock and resist
> erosion. Screen bark mulch to eliminate particles less than 1/8 inch
> and pieces greater than 3 inches across.
>
> E. Anti-Desiccant: Emulsion-type, film-forming agent designed to
> permit transpiration but retard excessive loss of moisture from
> plants. Deliver in manufacturer\'s fully identified containers and mix
> in accordance with manufacturer\'s instructions.
>
> 1\. Acceptable Product: \"Wilt-Pruf\" or approved substitute.
>
> F. Inorganic Amendment: Provide zeolite material as sold by Western
> Organics Inc. or an approved equivalent product.

2.03 [PLANTING BACKFILL MIXTURE]{.underline}

> A. Provide a premixed, homogenous soil consisting of native soil,
> organic matter and soil amendments and fertilizers as noted above,
> meeting the following performance characteristics.
>
> 1\. Native Soil: 80% by volume of clean native soil from the SNL fill
> area or a non-sterilized area of the site.
>
> 2\. Inorganic Amendment: 10% by volume of inorganic amendment.
>
> 3\. Organic Matter: 10% by volume of compost material and as follows:
>
> a\. Compost or Mulch: A combination of organic carbon sources such as
> straw, hay, bark, sawdust, or wood shavings and nitrogen sources such
> as manure, blood meal, or chemical fertilizers. Add nitrogen sources
> prior to composting. Aerobically compost mixture at temperatures
> between 120 degrees F and 160 degrees F for a period of not less than
> 100 days. Destroy weed seeds during composting and minimize urea
> ammonia from nitrogen. Screen finished compost to provide less than 2%
> remaining on a 1/2\" screen. Provide a carbon-to-nitrogen ratio of
> less than 50 parts carbon to one part nitrogen.
>
> b\. Miscellaneous Characteristics of the Organic Matter:
>
> \(1\) Potash (potassium) present at a rate of at least 200 parts per
> million of exchangeable potassium.
>
> \(2\) Salinity (EGXK) not to exceed 3 MNHOS/CM.
>
> \(3\) Nitrate nitrogen (NO3-N) present at a rate of at least 30 parts
> per million.
>
> \(4\) Phosphorous as measured by Olson sodium bicarbonate measurement
> method not less than 15 parts per million.
>
> \(5\) PH shall be between 6.0 and 7.5.
>
> \(6\) TKN2 or Total Kjeldahlnitrogen 250 ppm or greater.
>
> \(7\) NH4 25 ppm or less.
>
> c\. Potential Sources of the Organic Matter.
>
> \(1\) Western Organics Inc.
>
> RR 9, Box 862
>
> 2nd and Bates Rd. SW
>
> Albuquerque, NM 87105
>
> \(505\) 877-8670
>
> \(2\) New Mexico Compost Products
>
> From Soilutions
>
> 9008 Bates Rd. SE
>
> Albuquerque, NM 87105
>
> \(505\) 877-0220

2.04 [MISCELLANEOUS LANDSCAPING MATERIALS]{.underline}

> A. Filter Fabric: Non-woven polypropylene or polyester material,
> meeting the following requirements.
>
> 1\. Tensile strength per ASTM D1682: 90 lbs. minimum
>
> 2\. Elongation percent per ASTM D1682: 65% maximum
>
> 3\. Equivalent open size (US Sieve NO.): 50-100
>
> 4\. Permeability coefficient (CM/SEC): .05 minimum
>
> 5\. Flow in gallons per square feet per minute per ASTM D-4491: 80
> minimum
>
> 6\. Weight in ounces per square yard: 3.0 minimum
>
> 7\. Acceptable Products:
>
> a\. Soil-Check, manufactured by Brighton By-Products Company, Inc.,
> P.O. Box 23, New Brighton, PA 15066; 1-800-245-3502.
>
> b\. Propex 4545, manufactured by Amoco Fabric Co., 550 Interstate
> North Parkway, Suite 150, Atlanta, GA 30099; (404) 955-0935.
>
> c\. Mirafi Miriscape II, manufactured by Celanese Fibers Marketing
> Co., 1211 Avenue of the Americas, New York, NY 10036; (212) 764-7640;
> or Box 32414, Charlotte, NC 28232; (704) 554-2000.
>
> d\. Warren\'s Terrabond, sold by Warren\'s Seed and Special Products
> Division, P.O. Box 459, Suisun City, CA 94585.
>
> e\. DUON by Phillips Petroleum, available from Blunk\'s Wholesale
> Supply, Inc.
>
> B. Staking Materials (required only when indicated on drawings and for
> evergreens):
>
> 1\. Tree Support Stakes: #5 reinforcing rod, 10\'-0\" long, or as
> indicated on drawings.
>
> 2\. Wire: 12 gauge annealed galvanized steel.
>
> 3\. Chafing Guards: New or used 2-ply reinforced rubber hose.
>
> C. Tree Wrap: Two thicknesses of crinkled paper cemented together with
> a layer of bituminous material. Provide wrapping material a minimum of
> 4 inches wide, with a stretch factor of 33-1/3 percent. Provide a
> lightly tarred medium or coarse sisal twine for tying tree wrap to
> tree. Wrap trees if planted between September 1 and February 1.

[PART 3 - EXECUTION]{.underline}

3.01 [EXAMINATION]{.underline}

> A. Obtain approval of grading from the SDR prior to plant and mulch
> placement, excavation, or filter fabric installation.

3.02 [PREPARATION]{.underline}

> A. Measurements and Plant Material Locations: Tree and shrub locations
> shown on the planting plan are approximate. Stake all plant material
> locations shown on the planting plan, and, as directed by the SDR,
> adjust the position and orientation of trees. Obtain approval of final
> positions of plant material from the SDR.
>
> B. Preparation of Ground Surface: Remove rocks, stones greater than
> one inch across, trash and other debris from areas to be planted or
> mulched. Grade areas smooth, to the appropriate subgrade. See planting
> installation notes for soil modifications near trees and shrubs.

3.03 [INSTALLATION]{.underline}

> A. Trees: Excavate tree pits 6 [feet]{.underline} beyond the spread of
> the root ball or box or to the edge of adjacent paving for a depth of
> one foot. Excavate for a depth of 10\". Backfill entirely with
> Planting Backfill Material as noted above. Planting Backfill Material
> will include enzymes, fertilizer, humates, superabsorber, organic and
> inorganic components and native soil. When soil conditions detrimental
> to plant growth are encountered, such as rubble fill, adverse drainage
> conditions or obstructions, notify the SDR before planting. Place
> backfill in pit to proper depth so top of root ball will be one inch
> below adjacent soil grade (on slopes, one inch shall be the depth
> below surrounding grade on the downhill side). Set root ball in center
> of pit with top of ball one inch lower than surrounding grade. Align
> trunks where trees are in rows on the plan. Remove burlap from the top
> one-third of root ball. Remove [all]{.underline} wire from the top
> one-third of root ball. Remove all mesh smaller than a 3" square from
> the entire root ball. Backfill in carefully tamped layers. Continue
> backfilling and flood with water after two-third backfilled. After
> water is absorbed, continue backfilling and tamping to grade, leaving
> no voids or air pockets. Water again after placing final layer on
> backfill. All tree pits are to form a depression (one inch below
> adjacent grade or turf) with sides neatly sloped inward to top of
> ball. Fill depressions with mulch and wrap trees. Stake and/or guy
> evergreen trees and other trees as indicated on drawings and as shown
> in details. Apply antidesiccant to all leafed out trees and
> evergreens.
>
> B. Shrub Planting: Cut all circling or potentially girdling roots.
> Place individual shrubs in pits a minimum of 6 inches deeper and 12
> inches wider in diameter than the container or ball size. Excavate for
> a distance of 2 feet from the center of the shrub and backfill with
> Planting Backfill Mixture as noted above. Place planting backfill
> material to finish grade level and thoroughly soak. Apply
> antidesiccant to all leafed out shrubs and evergreen material.
>
> C. Mulch and Filter Fabric: Spread a uniform layer of mulch as
> specified, on all planting beds as noted and detailed on drawings.
> Maintain a smooth and consistent subgrade under the entire mulch area.
> Obtain SDR approval of mulch area subgrades prior to mulch and/or
> filter fabric installation. Install filter fabric only under gravel or
> cobble mulched areas.
>
> D. Tree Wrapping: The SDR will inspect the trunks of the trees for
> physical damage or insect infestation to determine the required
> treatment or rejection prior to the wrapping operation. For trees
> planted between September 1 and February 1, wrap all deciduous trees
> spirally from bottom to top with specified tree wrap, or first quality
> burlap not less than six inches nor more than ten inches wide and of
> suitable strength. Wrap tree to overlay and entirely cover the trunk
> from the ground to the height of the second branches and shall be neat
> and snug. Overlap approximately two inches.
>
> E. Staking and Guying:
>
> 1\. Guy and stake for plantings if indicated on the drawings and as
> noted above. Stake all evergreens. If no staking is noted, staking is
> a contractor option. The trees shall be reviewed at the end of the
> warranty period to see if the trunks are out of plumb. If trunks are
> out of plumb, corrective actions acceptable to the SNL Delegated
> Representative shall be taken by the contractor.
>
> 2\. Drive standard stakes vertically into the ground to a depth in
> such a manner as not to injure the ball or roots.
>
> 3\. Hold plants firmly between the stakes with a double strand of 12
> gauge wire. Use hose chafing guards, as specified, where wire will
> contact the plant. Twist hose and wire assembly between tree and stake
> as required to hold tree securely yet allow some movement.

3.04 [FIELD QUALITY CONTROL]{.underline}

> A. Utility Coordination: Locate existing utilities. Repair damage to
> utilities at Contractor\'s expense as directed by the SDR.
>
> B. Pruning: Prune plant materials as directed by the SDR and in
> compliance with ANSI Z133.1. Remove dead and broken branches. Prune
> deciduous trees and shrubs to reduce total amount of branching
> structure by no more than one-third. Retain typical growth habit of
> individual plants with as much height and spread as is practicable.
> [Do not pole or remove the leader from the trees]{.underline}. Remove
> trimmings from site. Prune plant materials between October 1 and May
> 15. Trim trees near walks to 8\'-0\" height above walk, as directed by
> SDR.

3.05 [MAINTENANCE]{.underline}

> A. Begin maintenance immediately after planting.
>
> B. Maintain trees, shrubs and other plants until final acceptance of
> all planting work but in no case less than 30 days after substantial
> completion of planting.
>
> C. Maintain trees, shrubs and other plants by pruning, cultivating and
> weeding as required for healthy growth. Restore planting saucers.
> Tighten and repair stake and guy supports and reset trees and shrubs
> to proper grades or vertical position as required. Restore or replace
> damaged wrappings. Spray as required to keep trees and shrubs free of
> insects and disease. Replace dead plant material. Protect from damage
> resulting from trespass, erosion, weather, vandalism, disease, and
> other hazards.

3.06 [CLEANUP AND PROTECTION]{.underline}

> A. During landscape work and maintenance period, keep pavements clean
> and work area in an orderly condition.
>
> B. Upon completion of all planting operations, clean the portion of
> the project site used for storing materials and equipment of all
> debris, superfluous materials, and equipment. Remove materials and
> equipment from the project site. Sweep or wash clean walks and
> pavements upon completion of work in this Section.
>
> C. Protect landscape work and materials from damage due to landscape
> operations, operations by other contractors and trades, erosion and
> trespassers. Maintain protection during installation and maintenance
> periods. Treat, repair, or replace damaged landscape work as directed
> by the SDR.

3.07 [INSPECTION AND ACCEPTANCE]{.underline}

> A. When landscape work is completed, including maintenance, the SDR
> will, upon request, make an inspection to determine acceptability.
>
> B. When inspected landscape work does not comply with requirements,
> replace rejected work and continue specified maintenance until
> reinspected by the SDR and found to be acceptable. Remove rejected
> plants and materials promptly from project site.

END OF SECTION