DIVISION 14
LANDSCAPE SPECIFICATIONS
14.1
Irrigation - General
14.1.1
Permits and Fees
The Contractor shall obtain and pay for any and all building permits, as required.
14.1.2
Manufacturer's Directions
Manufacturer's directions and detailed Drawings shall be followed in all cases where the
manufacturer of articles used furnishes directions covering points not shown in the Drawings and
Specifications.
14.1.3
Ordinances and Regulations
All local, municipal, and state laws, and rules and regulations governing or relating to any portion of
irrigation work, are hereby incorporated into and made a part of these Specifications, and their
provisions shall be carried out by the Contractor. Anything contained in these Specifications shall
not be construed to conflict with any of the above rules and regulations or requirements of the same.
However, when these Specifications call for or describe materials, workmanship, or construction of
a better quality, higher standard, or larger size than is required by the above rules and regulations,
the provisions of these Specifications and Drawings shall take precedence.
14.1.4
Explanation of Drawings
Due to the scale of Drawings, it is not possible to indicate all offsets, fittings, sleeves, etc., which
may be required. The Contractor shall carefully investigate the structural and finished conditions
affecting all of his work and plan his work accordingly, furnishing such fittings, etc., as may be
required to meet such conditions.
Drawings are generally diagrammatic and indicative of the work to be installed. The Work shall be
installed in such a manner as to avoid conflict between irrigation systems, planting, and architectural
features.
The Contractor shall not willfully install the irrigation system as shown on the Drawings when it is
obvious in the field that unknown obstructions, grade differences, or discrepancies in area
dimensions exist that might not have been considered in engineering. Such obstructions or
differences should be brought to the attention of the Inspector as soon as possible. In the event this
notification is not performed, the Irrigation Contractor shall assume full responsibility for any
revision necessary.
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14.2
Submittals
14.2.1
Materials List
14.2.1.1
The Contractor shall furnish the articles, equipment, materials, or processes specified by name in the
Drawings and Specifications. No substitution will be allowed without prior written approval of
District.
14.2.1.2
Equipment or materials installed or furnished without prior approval of the Inspector may be
rejected and the Contractor required to remove such materials from the site at his own expense.
14.2.1.3
Manufacturer's warranties shall not relieve the Contractor of his liability under the guarantee. Such
warranties shall only supplement the guarantee.
14.2.2
Record and As-Built Drawings
14.2.2.1
The Contractor shall provide and keep up-to-date complete "as-built" drawings indicating locations,
sizes and kinds of equipment installed. Prints for this purpose may be obtained from RCWD at no
cost. This set of Drawings shall be kept on the site and shall be used only as a record set.
14.2.2.2
These Drawings shall also serve as work progress sheets, and the Contractor shall make neat and
legible notations thereon daily as the Work proceeds, showing the Work as actually installed. These
Drawings shall be available at all times for review and shall be kept in a location designated by the
Inspector.
14.2.2.3
Before the date of the final site observation, the Contractor shall transfer all information from the
"as-built" prints to a blueline procured from RCWD. All work shall be neat, in ink, and subject to
the approval of the District.
14.2.2.4
The Contractor shall dimension from two permanent points of reference, building corners, sidewalk
or road intersections, etc., the location of the following items:
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a.
Connection to existing water lines;
b.
Connection to existing electrical power;
c.
Gate valves;
d.
Routing of sprinkler pressure lines (dimension max. 100 feet along routing);
e.
Sprinkler control valves;
f.
Routing of control wiring;
g.
Quick coupling valves; and,
h.
Other related equipment as directed by the Owner.
14.2.2.5
On or before the date of the final approval, the Contractor shall deliver one set of bluelines of
as-built plans to the Owner. Delivery of the bluelines will not relieve the Contractor of the
responsibility of furnishing required information that may be omitted from the prints.
14.2.3
Controller Charts
14.2.3.1
As-built Drawings shall be approved by the Inspector before controller charts are prepared.
14.2.3.2
Provide one controller chart for each controller supplied.
14.2.3.3
The chart shall show the area controlled by the automatic controller and shall be the maximum size
that the controller door will allow.
14.2.3.4
The chart is to be a reduced drawing of the actual as-built system. However, in the event the
controller sequence is not legible when the drawing is reduced, it shall be enlarged to a size that will
be readable when reduced.
14.2.3.5
The chart shall be a blackline or blueline print and a different color shall be used to indicate the area
of coverage for each station.
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14.2.3.6
When completed and approved, the chart shall be hermetically sealed between two pieces of plastic,
each piece being a minimum 10 mil.
14.2.3.7
These charts shall be completed and approved prior to final field observation of the irrigation
system.
14.2.4
Operation and Maintenance Manuals
14.2.4.1
Prepare and deliver to the Inspector within ten calendar days prior to completion of construction,
two hard cover binders with three rings containing the following information:
a.
Index sheet stating Contractor's address and telephone number, list of equipment
with name and addresses of local manufacturer's representatives.
b.
Catalog and parts sheets on every type of material and equipment installed.
c.
Guarantee statement.
d.
Complete operating and maintenance instruction on all major equipment.
14.2.4.2
In addition to the above-mentioned maintenance manuals, provide the appropriate maintenance
personnel with instructions for major equipment.
14.2.5
Equipment to be Furnished
14.2.5.1
Supply the appropriate maintenance personnel with the following tools:
a.
Two sets of special tools required for removing, disassembling, and adjusting each
type of sprinkler and valve supplied.
b.
Two five-foot valve keys for operation of gate valves.
c.
Two keys for each automatic controller installed.
d.
One quick coupler key and matching hose swivel for every five (5) quick coupling
valves installed.
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14.2.5.2
The above-mentioned equipment shall be turned over to the Inspector at the conclusion of the
project. Before final site observation can occur, evidence that the Inspector has received this
material must be shown to the Maintenance Department representative.
14.2.6
Guarantee
14.2.6.1
The guarantee for the sprinkler irrigation system shall be made in accordance with the attached form.
14.2.6.2
A copy of the guarantee form shall be included in the operations and maintenance manual.
14.2.6.3
The guarantee form shall be retyped onto the Contractor's letterhead and contain the following
information:
GUARANTEE FOR SPRINKLER IRRIGATION SYSTEM
We hereby guarantee that the sprinkler irrigation system we have furnished and installed is free from defects in materials
and workmanship, and the work has been completed in accordance with the Drawings and Specifications, ordinary wear
and tear and unusual abuse or neglect excepted. We agree to repair or replace any defects in material or workmanship,
including settling of backfilled areas below grade, which may develop during the period of (1) one year from date of
acceptance and also to repair or replace any damage resulting from the repairing or replacing of such defects, to the
satisfaction of the Inspector, at no additional cost to the Owner. We shall make such repairs or replacements within 72
hours of notification that repair work is necessary. In the event of our failure to make such repairs or replacements within
a reasonable time after receipt of written notice from the Owner, we authorize the Owner to proceed to have said repairs
or replacements made at our expense and we will pay the costs and charges, therefore, upon demand.
SIGNED:
___________________________________________
PROJECT:
___________________________________________
ADDRESS:
___________________________________________
___________________________________________
LOCATION:
___________________________________________
___________________________________________
TELEPHONE:
___________________________________________
___________________________________________
___________________________________________
DATE OF ACCEPTANCE: _____________________
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14.3
Materials
14.3.1
General
Use only new materials of brands and types noted on Drawings, specified herein, or approved.
14.3.2
PVC Pressure Main Line Pipe and Fittings
14.3.2.1
Rubber gasket-type pressure main line piping for sizes 2½-inch and larger, shall be Ring-Tite PVC
Class 160.
14.3.2.2
Pipe shall be made from an NSF approved Type I, Grade I PVC compound conforming to ASTM
Resin Specification D1784. All pipe must meet requirements as set forth in Federal Specifications
PS-22-70, with an appropriate standard dimension (SDR) for ring-tite PVC Pipe.
14.3.2.3
Ring-Tite PVC fittings shall be fabricated from Schedule 40, 1-2, II-I NSF solvent weld PVC fittings
conforming to ASTM Testing Procedure D-2466 and PVC ring-tite bell adapter using solvent and
solvent welding procedures recommended by the manufacturer.
14.3.2.4
Fabrication shall be performed at the manufacturer's plant location or at an authorized distributor
shop location. Field fabrication of ring-tite fittings will not be allowed.
14.3.2.5
Solvent welded type pressure main line piping for sizes 2-inch and larger shall be PVC Class 315.
14.3.2.6
Pipe shall be made from an NSF approved Type I, Grade I PVC compound conforming to ASTM
Resin Specification D-1784. All pipe must meet requirements as set forth in Federal Specification
PS-22-70, with an appropriate standard dimension (SDR) for solvent-weld pipe.
14.3.2.7
Pressure main line piping for sizes 1½-inch and smaller shall be PVC Schedule 40 with solvent
welded joints.
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14.3.2.8
Pipe shall be made from NSF-approved Type I, Grade I PVC compound conforming to ASTM
Resin Specification 1785. All pipe must meet requirements as set forth in Federal Specifications
PS-21-70. (Solvent-weld pipe.)
14.3.2.9
PVC solvent-weld fittings shall be Schedule 40, 1-2, II-I NSF approved, conforming to ASTM Test
Procedure D-2466.
14.3.2.10
Solvent cement and primer for PVC solvent-weld pipe and fittings shall be of type and installation
methods prescribed by the manufacturer.
14.3.2.11
All PVC pipe must bear the following markings:
a.
Manufacturer's name.
b.
Nominal pipe size.
c.
Schedule or class.
d.
Pressure rating in P.S.I.
e.
NSF (National Sanitation Foundation) approval.
f.
Date of extrusion.
g.
U.P.C. Shield Logo (IAPMO Approval).
14.3.2.12
All fittings shall bear the manufacturer's name or trademark, material designation, size, applicable
I.P.S. schedule, and NSF seal of approval.
14.3.3
PVC Non-Pressure Lateral line Piping
14.3.3.1
Non-pressure buried lateral line piping shall be PVC Class 200 with solvent-weld joints.
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14.3.3.2
Pipe shall be made from NSF-approved, Type I, Grade II PVC compound conforming to ASTM
Resin Specification D-1784. All pipe must meet requirements set forth in Federal Specifications
PS-22-70 with an appropriate standard dimension ratio.
14.3.3.3
Except as noted in Paragraphs 1 and 2 of Section 14.3.2, all requirements for non-pressure lateral
line pipe and fittings shall be the same as for solvent-weld pressure main line pipe and fittings as set
forth in Section 14.3.2.
14.3.3.4
Non-pressure lateral line piping installed on slope surface shall be UVR-PVC Schedule 40. Pipe
shall be PVC 1120, Type I, Grade I, manufactured in accordance with ASTM Designation D-1785.
14.3.3.5
Fittings shall be UVR-PVC 1120, Type I, Grade I manufactured in accordance with ASTM
Designation D-2246. Fittings shall be Schedule 40.
14.3.3.6
Solvent cement shall be Brownline Bond-Tite Cement conforming to the requirements of ASTM
Designation D-2564. Apply an approved primer prior to the application of Brownline Bond-Tite
Solvent Cement when joining UVR-PVC pipe and fitting connections.
14.3.3.7
Riser stabilizers shall be of UVR-PVC material with cocking screws and shall be Brownline No.
SRS-1120 with ½-inch square steel tubing stakes.
14.3.3.8
Pipe stabilizer shall be of UVR-PVC material with cocking screws and shall be Brownline No.
SRS-1120 with ½-inch square steel tubing stakes.
14.3.3.9
Riser adapters shall be of UVR-PVC material with cocking screws and shall be Brownline No.
SHR-550, SRA-500 or SRA-700.
14.3.4
Brass Pipe Fittings
14.3.4.1
Where indicated on the Drawings, use red brass screwed pipe conforming to Federal Specification
No. WW-P-351.
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14.3.4.2
Fittings shall be red brass conforming to Federal Specification No. WW-P-460.
14.3.5
Copper Pipe Fittings
14.3.5.1
Copper pipe shall be Type "K" hard-tempered ASTM B88 and fittings shall be wrought solder joint
type in accordance with ANSI B16.22.
14.3.5.2
Joints shall be soldered with silver solder: 45% silver, 15% copper, 16% zinc; 24-inch cadmium and
solidus at 1,125 degrees F and liquids at 1,145 degrees F, conforming to ASTM B-206 and Federal
Specification QQB 00655.
14.3.6
Thrust Blocks
14.3.6.1
Thrust blocks for ring-tite pipe shall be of size and type required by the manufacturer's installation
guide.
14.3.6.2
Form thrust blocks in such a manner to prevent any concrete from coming in contact with the pipe.
Thrust blocks shall be between solid soil and the fitting.
14.3.7
Quick Coupling Valves
14.3.7.1
Quick coupling valves shall have a one- or two-piece body designed for working pressure of 150 psi
operable with quick coupler.
14.3.7.2
Quick coupling valves shall be one (1) inch in size and shall be equipped with a locking vinyl cover,
yellow in color.
14.3.8
Backflow Prevention Units
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14.3.8.1
Backflow preventors and/or vacuum breakers shall be of size and type as indicated on the Drawings.
All sprinkler irrigation systems that are using water from the potable water system shall require
backflow prevention. All backflow prevention units shall be installed in accordance with
requirements set for by local codes and the County Health Department.
14.3.8.2
Wye strainers at backflow prevention units shall have a bronzed screwed body for sizes 2-inch and
smaller and 125-lb. cast iron flanged body for sizes 2½-inch and larger. All wye strainers shall have
a minimum 30-mesh movel screen and shall be similar to Bailey No. 100B or approved equal.
14.3.9
Check Valves
14.3.9.1
Swing check valves 2-inch and small shall be 200-lb. W.O.G. bronze construction with replaceable
composition, neoprene or rubber disc and shall meet or exceed Federal Specification WW-V-51d,
Class A, Type IV.
14.3.9.2
Anti-drain valves shall be of heavy-duty virgin PVC construction with F.I.P. thread inlet and outlet.
Internal parts shall be stainless steel and neoprene. Anti-drain valves shall be field adjusted against
drawout from five (5) to forty (40) feet of head. Anti-drain and excess flow valve shall be similar to
the Valcon "ADV" or approved equal.
14.3.10
Gate Valves
14.3.10.1
Gate valves 3-inch and smaller shall be 125-lb. SWP bronze gate valve with screw-in bonnet, nonrising stem and solid wedge disc, and shall conform to Federal Specification WW-V-54, Type I,
Class A.
14.3.10.2
Gate valves 3-inch and smaller shall have threaded ends and shall be equipped with a bronze
handwheel.
14.3.10.3
Gate valves 3-inch and smaller shall be similar to those manufactured by Hammond (609 Series) or
approved equal.
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14.3.11
Control Wiring
14.3.11.1
The electrical system shall be installed in accordance with the National Electrical Code most
recently adopted by the County. Connections between the automatic controllers and the electric
control valves shall be made with direct burial copper wire AWG-U.F. 600 volt. Pilot wires shall be
a different color wire for each automatic controller. Common wires shall be white with a different
color stripe for each automatic controller. Installation shall be in accordance with the valve
manufacturer's specifications and the wire chart. In no case shall wire size be less than No. 14.
14.3.11.2
Wiring shall occupy the same trench and shall be installed along the same route as pressure supply
or lateral lines wherever possible.
14.3.11.3
Where more than one wire is placed in a trench, the wiring shall be taped together at intervals of ten
(10) feet.
14.3.11.4
An expansion curl should be provided within three (3) feet of each wire connection and at each
change in direction. Expansion curls shall be formed by wrapping at least five (5) turns of wire
around a 1-inch diameter pipe, then withdrawing the pipe.
14.3.11.5
All splices shall be made with Scotch-Lok No. 3576 Connector Sealing Packs, Pen-Tite wire
connector or approved equal. Use one splice per connector sealing pack.
14.3.11.6
Field splices between the automatic controller and electrical control valves will not be allowed
without prior approval of Inspector.
14.3.12
Automatic Controller
14.3.12.1
The automatic controller shall have the minimum number of stations as indicated on the Drawings
and shall be completely automatic in operation. It shall electronically start the sprinkler cycle and
electronically time the individual stations. Controller and valves shall be by the same manufacturer.
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14.3.12.2
The controller shall have a standard 117-volt, 60-cycle power input and 26.5-volt, 2.2-amp output.
14.3.12.3
The controller shall have a 14-day programming and be capable of automatically starting a watering
cycle at any time on the hour for 23 hours per day.
14.3.12.4
Each station shall have an off switch for zero time and individual timing control for two (2) to sixty
(60) minutes for each station.
14.3.12.5
Each station shall have an off switch for eliminating one or more stations from the automatic timing
sequence or for initiating a repeat cycle on any or all stations after the normal watering cycle has
been completed.
14.3.12.6
It shall be possible to operate the controller manually and to select and operate manually any station.
14.3.12.7
Controller shall be equipped with a reset circuit breaker, and shall be housed in a locking,
weatherproof cabinet with a pedestal mount.
14.3.12.8
The controller shall have as standard built-in features an electrical circuit for booster pump operation
and an electrical circuit for master valve operation.
14.3.12.9
Automatic controllers shall be as called out on the Drawings.
14.3.13
Outdoor Automatic Controller Enclosures
14.3.13.1
All automatic sprinkler controllers installed outside of a building shall be wall-mounted within a
vandal-resistant automatic controller enclosure.
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14.3.13.2
The outdoor controller enclosure shall be either Type "A," or Type "B," made of vandal-resistant
3/16-inch steel plate and 10-gauge sheet metal as manufactured by Le Meur Welding and Mfg. Co.,
R.A. Campbell Co., or approved equal. Enclosures shall be equipped with sliding doors.
14.3.13.3
Paint controller enclosure with two coats of rust-resistant paint prior to installation of automatic
controller. Color and type to be selected by Inspector.
14.3.14
Control Valve Boxes
14.3.14.1
Use 9-inch x 24-inch round box for all gate valves, Brooks No. 9, or approved equal.
14.3.14.2
Use 9½-inch x 16-inch x 11-inch rectangular box with green bolt-down cover for all electrical
control valves, Carson Industries 1419-12B, or approved equal.
14.3.15
Sprinkler Heads
14.3.15.1
General
14.3.16
a.
All sprinkler heads shall be of the same size and type, and shall deliver the same rate
of precipitation with the diameter (or radius) of throw, pressure, and discharge as
shown on the plans.
b.
Spray heads shall have a screw adjustment.
c.
Riser units shall be fabricated in accordance with the details shown on the plans.
d.
Riser nipples for all sprinkler heads shall be the same size as the riser opening in the
sprinkler body.
e.
All sprinkler heads of the same type shall be of the same manufacturer.
Flexible Polyethylene Pipe
All PE pipe shall be EHD Series 1350 for ½-inch lines and EHD Series 2057 for ¾-inch lines as
manufactured by Hardie Irrigation, Laguna Niguel, California, or approved equal.
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14.3.17
Emitter Distribution Tubing
All tubing shall be EHD Series 0437 polyethylene tubing as manufactured by Hardie Irrigation,
Laguna Niguel, California, or approved equal.
14.3.18
Fittings for Polyethylene Pipe
All fittings shall be combination PVC/Compression Type Fittings.
14.3.19
Mini-Spray Heads
All mini-spray heads shall be Maxijet .05 orifice for all tree species and Maxijet .03 orifice for all
shrub species and shall be attached to Maxijet 8EXA riser tubing as manufactured by Maxijet,
Dundee, Florida, or approved equal.
14.3.20
Filters
Filters to remove sediment and physical impurities from sprinkler systems shall be as shown on the
plans.
14.3.21
Automatic End-Flush Cap
End-flush caps shall be Agricultural Products Corp., No. 700 CE-FCH, or approved equal.
14.3.22
Soil Moisture Sensing Devices
Soil moisture sensing devices shall be of the type and quantity as shown on the plans.
14.4
Irrigation Installation Procedures
14.4.1
Site Conditions
14.4.1.1
Exercise extreme care in excavating and working near existing utilities. Contractor shall be
responsible for damages to utilities which are caused by his operations or neglect. Check existing
utility drawings for existing utility locations.
14.4.1.2
Coordinate installation of sprinkler irrigation materials, including pipe, so there shall be no
interference with utilities or other construction or difficulty in planting trees, shrubs and ground
covers.
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14.4.1.3
The Contractor shall carefully check all grades to satisfy himself that he may safely proceed before
starting work on the sprinkler irrigation system.
14.4.2
Water Supply
14.4.2.1
Sprinkler irrigation system shall be connected to water supply points of connection, as indicated on
the drawings.
14.4.2.2
Connections shall be made at approximate locations as shown on Drawings.
responsible for minor changes caused by actual site conditions.
14.4.3
Contractor is
Electrical Supply
14.4.3.1
Electrical connections for automatic controller shall be made to electrical points of connection as
indicated on the Drawings.
14.4.3.2
Connections shall be made at approximate locations as shown on Drawings.
responsible for minor changes caused by actual site conditions.
14.4.4
Contractor is
Trenching
14.4.4.1
Dig trenches straight and support pipe continuously on bottom of trench. Lay pipe to an even grade.
Trenching excavation shall follow layout indicated on drawings and as noted.
14.4.4.2
Provide a minimum of 24 inches of cover for all pressure supply lines 3-inch and 4-inch in size.
14.4.4.3
Provide for a minimum of 18 inches of cover for all pressure supply lines 2½ inches and smaller.
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14.4.4.4
Provide for a minimum cover of 12 inches for all non-pressure lines.
14.4.4.5
Provide for a minimum cover of 18 inches for all control wiring in conduit, and 24 inches for direct
burial cables.
14.4.4.6
Polyethylene tubing and emitter distribution tubing shall be installed in a narrow-type trench a
minimum of two (2) inches below the finish soil grade. In placing the pipe in the trench, the bottom
of the trench need not be graded, but shall be free from sharp rocks or clods of dirt. Backfill shall be
compacted to 90% of natural soil relative compaction.
14.4.4.7
All plastic pipe sections and lines shall be placed accurately to line and grade in prepared trenches.
The inside of all pipe shall be clean and free of foreign matter, including burrs from cutting of pipe.
All adjustments to grade shall be made by scraping away or filling in with clean earth backfill
material, well compacted under the body of the pipe. Installation of plastic pipe shall be done in
strict accordance with manufacturer's recommendations. The alignment of pipe shall be correct
before joint connections are made.
14.4.5
Backfilling
14.4.5.1
The trenches shall not be backfilled until all required tests are performed. Trenches shall be
carefully backfilled with the excavated materials approved for backfilling, consisting of earth, loam,
sandy clay, sand, or other approved materials, free from large clods of earth or stones. Backfill shall
be mechanically compacted in landscaped areas to a dry density equal to adjacent undisturbed soil in
planting areas. Backfill will conform to adjacent grades without dips, sunken areas, humps, or other
surface irregularities.
14.4.5.2
A fine granular material backfill will be initially placed on all lines. No foreign matter larger than
½-inch in size will be permitted in the initial backfill.
14.4.5.3
Flooding of trenches will be permitted only with approval of the Inspector.
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14.4.5.4
If settlement occurs and subsequent adjustments in pipe, valves, sprinkler heads, lawn or planting, or
other construction are necessary, the Contractor shall make all required adjustments without cost to
the District.
14.4.6
Trenching and Backfill Under Paving
14.4.6.1
Trenches located under areas where paving, asphaltic concrete, or concrete will be installed shall be
backfilled with sand (a layer 6 inches below the pipe and 3 inches above the pipe) and compacted to
equal the compaction of the existing adjacent undisturbed soil and shall be left in a firm, unyielding
condition. All trenches shall be left flush with the adjoining grade. The Irrigation Contractor shall
set in place, cap, and pressure test all piping under paving prior to the paving work.
14.4.6.2
Generally, the piping under existing walks is done by jacking, boring, or hydraulic driving; but
where any cutting or breaking of sidewalks and/or concrete is necessary, it shall be done and
replaced by the Contractor as part of the contract cost. Permission to cut or break sidewalks and/or
concrete shall be obtained from the Inspector. No hydraulic driving will be permitted under concrete
paving or A.C. paving.
14.4.6.3
Provide for a minimum 18-inch cover between the top of the pipe and the bottom of the aggregate
base for all pressure and non-pressure piping installed under asphaltic concrete paving. All sleeves
under paving shall be Schedule 40 PVC.
14.4.7
Non-Threaded Connections
The surfaces of the pipes and fittings to be joined shall be free from any dirt, moisture, or dust and
only the solvent recommended by the manufacturer shall be used. When cutting of pipe is
necessary, the Contractor shall remove any rough edges from the cut end of the pipe before coupling
the sections together.
With a non-synthetic bristle brush, apply a generous coat of primer then solvent to the fitting and to
the pipe; be certain solvent is applied to the entire circumference. Press the fittings and pipe firmly
together, and turn approximately one-quarter turn to evenly distribute the solvent. The joint should
be held a minimum of fifteen (15) seconds until curing has started. Check the position of all fittings
immediately before solvent weld sets. Excess solvent shall be wiped from the pipe before it sets.
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14.4.8
Mini-Spray Heads and Risers
Mini-spray heads and risers shall be as indicated on the Drawings and installed per manufacturer's
instructions.
14.4.9
Valve Installation
14.4.9.1
Screw valves onto main water line fittings according to "Flow" direction arrow on valve body.
Prevent dirt or rocks from entering pipe, valve body, or valve cover chamber.
14.4.9.2
Tighten all connections and check for leaks. Perform static tests for inspection.
14.4.9.3
Valve wire size shall be in accordance with the manufacturer's recommendations per distance of
valve from controller.
14.4.9.4
The Contractor shall furnish all necessary materials and do all work necessary to effect a complete
unit installation.
14.4.10
Assemblies
14.4.10.1
Routing of sprinkler irrigation lines as indicted on the Drawings is diagrammatic. Install lines (and
various assemblies) in such a manner as to conform with the details per plans.
14.4.10.2
Install no multiple assemblies on plastic lines. Provide each assembly with its own outlet.
14.4.10.3
Install all assemblies specified herein in accordance with respective detail. In absence of detail
drawings for specifications pertaining to specific items required to complete work, perform such
work in accordance with best standard practice with prior approval of the District.
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14.4.10.4
PVC pipe and fittings shall be thoroughly cleaned of dirt, dust, and moisture before installation.
Installation and solvent welding methods shall be as recommended by the pipe and fitting
manufacturer.
14.4.10.5
On PVC to metal connections, the Contractor shall work the metal connections first. Teflon tape, or
approved equal, shall be used on all threaded PVC to PVC and on all threaded PVC to metal joints.
Light wrench pressure is all that is required. Where threaded PVC connections are required, use
threaded PVC adapters into which the pipe may be solvent-welded.
14.4.11
Line Clearance
All lines shall have a minimum clearance of six (6) inches from each other and from lines of other
trades. Parallel lines shall not be installed directly over one another.
14.4.12
Automatic Controller
Install as per manufacturer's instructions. Remote control valves shall be connected to controller in
numerical sequence as shown on the Drawings. Shall be located as shown on the Drawings and
installed on pedestal mount. 110V electrical service shall be provided at controller location, as
shown on the Drawings.
14.4.13
High Voltage Wiring for Automatic Controller
14.4.13.1
120-volt power connection to the automatic controller shall be provided by the Irrigation Contractor.
14.4.13.2
All electrical work shall conform to local codes, ordinances, and union authorities having
jurisdiction.
14.4.14
Remote Control Valves
Install where shown on Drawings and Details. When grouped together, allow at least 12 inches
between valves. Install each remote control valve in a separate valve box.
14.4.15
Flushing of System
14.4.15.1
After all new sprinkler pipe lines and risers are in place and connected, all necessary diversion work
has been completed, and prior to installation of sprinkler heads, the control valves shall be opened
and a full head of water used to flush out the system.
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14.4.15.2
Sprinkler heads shall be installed only after flushing of the system has been accomplished to the
complete satisfaction of the Owner.
14.4.16
Sprinkler Heads
14.4.16.1
Install the sprinkler heads as designated on the Drawings. Sprinkler heads to be installed shall be
equivalent in all aspects to those itemized on Plans and in Details.
14.4.16.2
Spacing of heads shall not exceed the maximum indicated on the Drawings. In no case shall the
spacing exceed the maximum recommended by the manufacturer.
14.4.17
Existing Trees
Where it is necessary to excavate adjacent to existing trees, the Contractor shall use all possible care
to avoid injury to trees and tree roots. Excavation in areas where 2-inch and larger roots occur shall
be done by hand. All roots two (2) inches and larger in diameter, except directly in the path of pipe
or conduit, shall be tunneled under and shall be heavily wrapped with burlap to prevent scarring or
excessive drying. Where a ditching machine is run close to trees having roots smaller than two (2)
inches in diameter, the wall of the trench adjacent to the tree shall be hand-trimmed, making clean
cuts through. Roots 1-inch and larger in diameter shall be painted with two coats of Tree Seal or
equal. Trenches adjacent to trees should be closed within 24 hours; and where this is not possible,
the side of the trench adjacent to the tree shall be kept shaded with burlap or canvas.
14.4.18
Field Quality Control
14.4.18.1
Adjustment of the System
a.
The Contractor shall flush and adjust all sprinkler heads for optimum performance
and to prevent overspray onto walks, roadways, and buildings as much as possible.
b.
If it is determined that adjustments in the irrigation equipment will provide proper
and more adequate coverage, the Contractor shall make such adjustments prior to
planting. Adjustments may also include changes in nozzle sizes and degrees of arc,
as required.
c.
Lowering raised sprinkler heads by the Contractor shall be accomplished within ten
(10) days after notification by Owner.
d.
All sprinkler heads shall be set perpendicular to finished grades unless otherwise
designated on the plans.
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14.4.18.2
Testing of High Pressure Irrigation System
a.
The Contractor shall request the presence of the Owner at least 48 hours (two
working days) in advance of testing.
b.
Test all pressure lines under hydrostatic pressure of 150 lbs. per square inch and
prove watertight.
Note: Testing of pressure main lines shall occur prior to installation to electric control valves.
c.
All piping under paved areas shall be tested under hydrostatic pressure of 150 lbs.
per square inch and proved watertight prior to paving.
d.
Sustain pressure in lines for not less than two (2) hours. If leaks develop, replace
joints and repeat test until entire system is proven watertight.
e.
All hydrostatic tests shall be made only in the presence of the Owner. No pipe shall
be backfilled until it has been inspected, tested, and approved.
f.
Furnish necessary force pump and all other test equipment.
g.
When the sprinkler irrigation system is completed, perform a coverage test in the
presence of the Owner to determine if the water coverage for planting areas is
complete and adequate. Furnish all materials and perform all work required to
correct any inadequacies of coverage due to deviations from plans, or where the
system has been willfully installed as indicated on the Drawings when it is obviously
inadequate, without bringing this to the attention of the Inspector. This test shall be
accomplished before any plants are planted.
h.
Upon completion of each phase of Work, the entire system shall be tested and
adjusted to meet site requirements.
14.4.18.3
Testing of Low Pressure Irrigation System
All water pipes, fittings, and appurtenances, after assembly and installation, shall be flushed out and
tested to the satisfaction of the Inspector.
a.
The first test shall be made in such manner that all valves in the new water sprinkler
lines will be tested for watertight closure.
b.
Valves may be tested in groups or singly while subjected to the full static water
pressure for a period of six (6) continuous hours.
c.
The second test shall be made by forcing all air from the pipes with water and
capping or plugging pipe risers. After the pipe risers have been plugged or capped,
[4/08]
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all line valves shall be fully opened and the pipelines subjected to static water
pressure of 35 psi for one hour. There shall be no leakage.
Water lines or valves which show evidence of leakage or fail to be watertight, shall be repaired to
the satisfaction of the Inspector or be replaced. After all repairs or replacements have been made
and approved, the above required tests shall be made again. All tests shall be completed prior to
backfilling; however, sufficient backfill material may be placed in trenches between fittings or
couplings on the pipelines to insure the stability of the line under pressure. In all cases, fittings and
couplings must be open to visual inspection for the full period of the tests.
14.4.19
Field Observation Schedule
14.4.19.1
Contractor shall be responsible for notifying Inspector in advance for the following field
observations according to the time indicated.
a.
Pre-job conference: 2 days
b.
Pressure supply line installation and testing: 2 days
c.
Coverage tests: 2 days
d.
Final field observation: 2 days
14.4.19.2
No work shall be backfilled until all field observations and testing has been completed and approved
by the Owner.
14.4.20
Maintenance
14.4.20.1
The entire sprinkler irrigation system shall be under full automatic operation for a period of seven
(7) days prior to any planting.
14.4.20.2
The Inspector reserves the right to waive or shorten the operation period.
14.4.20.3
Landscape irrigation system shall be fully maintained by the Contractor for a period of sixty (60)
days prior to final acceptance by the Inspector. This period may be extended if the maintenance
provisions are not met.
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14.4.21
Clean-Up
Clean up shall be made as each portion of work progresses. Refuse and excess dirt shall be removed
from the site, all walks and paving shall be broomed or washed down, and any damage sustained on
the work of others shall be repaired to original conditions.
14.4.22
Final Field Observation Prior to Acceptance
14.4.22.1
The Contractor shall operate each system in its entirety for the Inspector at the time of final field
inspection. Any items deemed not acceptable shall be reworked to the complete satisfaction of the
Inspector.
14.4.22.2
The Contractor shall show evidence that the Inspector has received all accessories, charts, record
drawings, and equipment as required before final field observation can occur.
14.4.22.3
End of maintenance shall occur only on the written acceptance by the Inspector.
14.5
General Site Planting
14.5.1
Weed Control for Lawn, Shrub, and Ground Cover Areas (Except Slopes)
All weeds within the entire project site shall be treated and removed according to Rancho California
Water District recommendations.
The project site shall be maintained in a weed-free condition during all stages of construction and
throughout the planting maintenance period.
14.5.1.1
Remove all existing weeds from surface. Remove all roots of Bermuda-Johnson Grass, etc.
14.5.1.2
Install irrigation
14.5.1.3
Fertilize all shrub/ground cover areas. Apply 10 lbs. of 16-20-0 commercial fertilizer per 1,000
square feet.
[4/08]
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14.5.1.4
Water all shrub/ground cover areas for three weeks to germinate weed seeds. Water application
should be at a low rate to avoid erosion.
14.5.1.5
Apply contact weed killer "Round Up" to all planting areas.
14.5.1.6
Plant shrub/ground cover as soon as "Round Up" has dissipated, according to manufacturer's
specifications.
14.5.2
Soil Preparation & Finish Grading
14.5.2.1
Rough Grade
Site to be graded by Landscape Contractor to within 1/10 foot plus or minus by others based upon
District's grading plan.
14.5.2.2
Finish Grade
Finish grading to consist of grading, raking, and hand work necessary to achieve desired contour and
flow line patterns resulting in evenly finished surfaces free of debris and litter.
14.5.2.3
Spread over all lawn, shrub, and ground cover areas, except slopes, three (3) cubic yards of
nitrolized redwood or fir shavings or three (3) cubic yards of fine-screened Unimulch shredded bark
and 150 lbs. of Gro Power Plus, analysis 5-3-1, and any other specified materials found in the soil
analysis to be added per 1,000 square feet. Thoroughly mix into soil to a depth of six (6) inches and
fine grade. Shape mounds as shown on plans. Contour interval at 1'-0". Contractor to import soil
necessary to attain design grades and berms, import soil to be free of weeds, debris, and have
balanced pH. Smooth and even grading without depressions or high spots to provide smooth and
even surfaces for proper drainage. Final grade will be one (1) inch below walk/top of curb. Remove
from the site all stones and deleterious material over two (2) inches in size. All planting areas shall
be top dressed with a one (1) inch layer of Sequoia Forest Humus.
14.5.2.4
Prepared plant pit backfill shall consist of the following by volume:
Two parts native soil from pit excavation
One part redwood sawdust
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Two parts nitrohumus
One pound commercial fertilizer per 10 cubic feet
These ingredients shall be accurately proportioned and thoroughly mixed before backfilling the plant
pits.
14.5.2.5
Gro-Power planting tablets shall be placed in each plant pit as follows:
•
•
•
14.5.3
Three (3) tablets for each one gallon container plant
Six (6) tablets for each five gallon container plant
Twelve (12) tablets for each fifteen gallon container plant
General
Contractor shall furnish all labor and equipment required to perform the planting work specified
herein and shown on the Drawings.
Planting shall not be performed until all irrigation systems have been installed and tested and
planting areas have been properly prepared, and the work approved by the project Inspector.
In the event that obstructions are encountered during planting operations, alternate locations will be
selected by the Inspector.
14.5.3.1
Materials
Plant materials indicated on the Drawings shall conform to the following:
a.
Nomenclature
Plant names indicated on the plans shall conform to the standardized plant names
established by the American Joint Committee of Horticultural Nomenclature except
for names not covered herein. In the latter case, the custom of a nursery has been
adopted.
b.
Condition
All plants shall be symmetrical, typical for the variety and species, vigorous, healthy
and free from any plant disease, insect pests, their eggs or larvae, and shall have
healthy root systems, filling their containers, but shall not be rootbound. They shall
be normal in height and spread for the type and size listed.
Plants shall be first-class representatives of the normal species and varieties. They
shall have normally well-developed branch systems and vigorous and fibrous root
systems. All plants shall be free from disfiguring knots, sun-scald injuries, abrasion
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of bark, and other objectionable disfigurements. Plants not conforming to the
requirements herein specified shall be considered defective. Such defective plants,
whether in place or not, shall be marked as rejected, immediately removed from the
site of work, and replaced with new plants.
All plant material shall meet the specifications of Federal, State, and County laws
requiring inspection for plant diseases and insect infections. Any inspection
certificates required by law shall accompany each shipment invoice or order for
stock. All plants shall be true to name and one of each lot shall be tagged with the
name and the size of the plants in accordance with the standards of practice
recommended by the American Association of Nurserymen.
The Contractor shall notify the Inspector at least 72 hours in advance of the time for
planting. Once the plants have been delivered, it will be the Contractor's
responsibility to perform all necessary operations to insure that the plants are planted
in the proper manner as described herein; such operations are to include removing
containers and trimming roots, and removing nursery stakes and ties.
14.5.3.2
Quantities and Types
All plant materials shall be furnished in the quantities, species, varieties, and sizes as noted on the
plans.
14.5.3.3
Substitutions
Substitutions for the indicated plant materials shall be permitted only if approved by the Inspector in
writing, and if providing the substituted plant or plants are of value and character equal to those
originally specified, and that substitutions are made at no additional expense.
14.5.3.4
Inspections
Inspection of plant materials shall be conducted at the following project intervals:
a.
Initial inspection and acceptance of plants at the site after being located by the
Contractor and just before planting. Root conditions of plants furnished in containers
shall be determined by the removal of earth of not less than two (2) plants of each
species or variety.
b.
After 25% completion of planting installation phase.
c.
Upon completion of all planting operations and prior to start of the maintenance
period, the Contractor or his authorized representative shall be on the site at the time
established for all inspections.
[4/08]
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14.5.3.5
General Conditions for Planting
a.
No plant material shall be planted until installation of the necessary sprinkler systems
have been completed and the soil has been prepared, as previously specified.
b.
Plants shall be located as designated on the Drawings and as herein specified.
c.
All plants shall be set in the ground so that they bear the same relation to the required
grade when settled as they bore to the natural grade before being transplanted. Each
plant shall be centered in the pit and backfill made with prepared mulch as specified.
d.
Plant material shall not be allowed to dry out prior to or during planting. Roots shall
be kept moist by means of wet sawdust, peat or burlap at all times during the
planting. During planting, roots shall not be exposed except while actually being
planted in the ground.
14.5.4
Plant Installation
14.5.4.1
Trees and shrubs shall be installed in planting pits with level bottoms. The length of the sides of the
pit shall be three times the diameter of the root ball and two and one-half times the depth of the root
ball. Compacted soil at the bottom and sides shall be loosened and scarified. Prepared mulch shall
be used for backfill and shall be placed in the bottom of each hole to such a depth that will allow the
plant to be at its normal growing depth when planted. After the plant has been set to the required
grade, the balance of the pit shall be filled with prepared mulch and thoroughly settled by tamping
and deep watering. No plants shall be planted if the root ball is broken or cracked before or during
planting.
a.
All 5- and 15-gallon trees shall be staked at the time of planting, as shown on the
plans.
b.
Watering basins shall be constructed around all trees equal to the circumference of
the plant pit and be at least four (4) inches high. Mounds may be of excavated
material if capable of retaining the water. Any settlement within the basins after
watering shall be filled with prepared soil to the required grade.
c.
Upon completion of the planting, sprinkler heads shall be checked for proper
operation and adjusted to insure proper irrigation of planted areas covered.
d.
Care shall be exercised at all times to protect all planted materials from any damage
after planting. Any plants damaged by any operation of the Contractor shall be
replaced by the Contractor at no additional expense. Any sprinklers damaged or
[4/08]
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destroyed by the Contractor's operations shall be replaced immediately at no
additional expense.
14.5.4.2
Ground Cover: Flats and/or Cuttings
All plant materials specified as rooted cuttings or flat stock on Planting Plan shall remain in the flats
until time of transplanting. The flat soil shall contain sufficient moisture so that soil does not fall
apart when lifting plant from flat. Ground cover plants shall not be allowed to dry out before or
while being planted. Roots shall not be exposed to the air except while actually being planted.
Wilted plants will not be accepted.
At the time of planting, the soil around each plant shall be firmed sufficiently to force out air
pockets. Plants to be planted in triangular spacing as specified o.c. (on center).
All cuttings shall be a minimum of six (6) inches long. Install plants in 6-inch x 6-inch planting pits.
Water immediately after each planting until one inch of water penetration is obtained. All ground
cover areas to receive a pre-emergent weed control treatment of "Betasan" or "Treflan", applied per
manufacturer's recommendation and consultation with a pest control advisor. Care shall be
exercised at all times to protect the plants after planting. Any damage to plants by trampling or other
operations of this Contract shall be repaired immediately.
14.5.4.3
Shrubs and Trees
Plant all container grown plants in planting pits, three times wider and two and one-half times deeper
than the root ball, as detailed on Planting Detail Sheet. Thoroughly mix the prepared backfill as
specified. Install Gro Power Planting tablets as specified. Basin all trees not in lawn areas; basin
shall not exceed top of root ball crown.
14.5.4.4
Top Dressing
Top dress all ground cover and shrub areas with one (1) inch thick layer of Sequoia Forest Humus or
equal.
14.5.4.5
Staking
Stake all trees as detailed on Planting Detail Sheet.
14.5.4.6
Pots and Planters
Use Kellogg's Indoor Planter Mix for backfill material. Apply Thompson's Water Seal or equal to
inside of all pots and redwood planters prior to planting. All pots shall be drilled for drainage and
furnished with saucers.
14.5.5
Sod (See Planting Detail Sheet for Type of Sod)
[4/08]
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14.5.5.1
Areas shall have a smooth and continual grade between existing or fixed controls, such as: walks,
curbs, catch basins. Roll, scarify, rake, and level as necessary to obtain true, even soil surface.
14.5.5.2
Apply fertilizers as specified on Planting Detail Sheet onto soil.
14.5.5.3
Laying
Sod shall be laid the same day it is delivered.
14.5.5.4
Unroll sod carefully and place in staggered pattern of strips. Sod shall be laid and taped against
adjacent strips to eliminate joints and edges.
14.5.5.5
Trim sod to conform to lawn shapes designated in the Planting Plan.
14.5.5.6
Watering
After sod is laid, it shall be irrigated thoroughly to provide at least a 6-inch moisture penetration.
14.5.5.7
Handling
All sod shall be handled and laid in a high-standard workmanship manner. All ends, joints, and cuts
are to fit tightly so that there are no voids and the final appearance is one of a continuous lawn.
Sections of sod less than eighteen (18) inches long or nine (9) inches wide shall not be used.
14.5.5.8
Inspection
No sod area will be acceptable until approved by the Inspector.
14.5.6
Stolonized Turf (See Planting Detail Sheet for Type of Stolon)
14.5.6.1
General Definitions
Stolon installation shall consist of the following: quality stolons, proper planting date, adequate soil
preparations, incorporation of suitable soil amendments if required, preplant fertilizers, proper stolon
storage, planting of stolons approximately 75% into damp soil and thereafter adequately irrigated.
[4/08]
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14.5.6.2
Materials and Composition of Stolons
The standard unit of measurement for stolons shall be a bushel. A bushel is defined as 1.24 cubic
feet, loose-packed, and having a minimum weight of eight (8) pounds net.
See Planting Detail Sheet for type of stolon. Minimum planting rate shall be five (5) bushels per
1,000 square feet. Stolons shall be grown from high-quality vegetative material upon soil treated
with appropriate State and Federal regulatory agency-approved pesticides for control of diseases,
insects and weeds. They shall be produced in fields periodically inspected by the California
Department of Food and Agriculture Nursery Section to insure high quality and freedom from
diseases, insects, and weeds according to the standards in effect in the current publication of "State
of California Regulations for Nursery Inspection."
14.5.6.3
Condition of Stolons
Stolons shall be defined as fresh living sections of runners and stems having nodes (joints) which
will produce growth (may be seasonable dormant and capable of renewing growth after planting)
when properly planted and maintained.
Stolons shall be cut to between one (1) and four (4) inches in length. Chaff, soil, or inert material
shall compose no more than 8% by weight. When delivered to the job site, stolons shall be in
corrugated containers, clean burlap bags, or suitable plastic mesh bags. Stolons may be held on site
for approximately twenty-four (24) hours if kept shaded, piled no more than two (2) deep, and
continually saturated with water until planted.
14.5.6.4
Planting Date
The optimum planting period is generally between April 1 and September 30. Earlier and later
plantings can be made depending upon soil temperatures and availability of quality stolons.
Plantings made other than during the optimum period of the year require a minimum of 20%
additional bushels of stolons per 1,000 square feet.
14.5.6.5
Soil Preparation
Debris shall be removed, weeds may be removed or plowed under, the soil tilled four (4) to six (6)
inches in depth, and such soil amendments as may be required for soil fertility, drainage, and texture
shall be worked into the soil. All areas shall be rough-graded plus or minus one (1) inch, then
thoroughly irrigated to wet the soil profile to a depth of eight (8) to twelve (12) inches. Finish grade
to level, the top three (3) inches of soil must be in a loose, friable condition and free of rocks larger
than four (4) inches. Ammonium phosphate (16-20-0) (or other recommended fertilizer) shall be
broadcast on all soil surfaces at ten (10) pounds per 1,000 square feet. Soil preparation and
amendments for heavy use, such as athletic fields, may be more extensive than the foregoing.
[4/08]
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14.5.6.6
Stolon Planting
Stolons shall be planted within 24 hours of delivery to the job site. The stolons shall be pressed into
the friable damp soil in such a manner as to bury approximately 75% of the stolons to a depth of ½inch to 1½-inch; stolons thus planted shall be rolled immediately thereafter, to assure intimate
contact between soil particles and the stolons. For planting large areas in excess of 10,000 to 20,000
square feet, mechanical stolon planters such as the Cal-Turf stolon roller shall be employed. In
small residential lots, stolons may be scattered on the prepared surface and top-dressed with
approximately ¼-inch organic material, then rolled.
It is not necessary to top dress stolons which have been properly planted with suitable mechanical
equipment.
14.5.6.7
Irrigation
At no time after planting shall stolons be subjected to drying. Newly planted stolons shall be
irrigated to a depth of 8-inch immediately after planting; at 100 degrees F, fifteen (15) minutes is the
maximum interval between planting and irrigation, at 75 degrees F, one (1) hour is the maximum
interval. New stolon plantings shall be kept saturated with water at all times for the first ten (10) to
twenty (20) days after planting, or until the new turf plants are sufficiently rooted and well
established to withstand less frequent irrigation.
14.5.7
Hydroseed Turf
Hydroseed all areas designated as "Hydroseeded Turf." See Planting Detail Sheet for type and
quantity of seed mix, fertilizer, and additional amendments.
14.5.7.1
Application
a.
Equipment: Hydraulic equipment used for the application of the fertilizer, seed, and
fiber pulp, shall be of the "Super Hydro Seeder" type, as approved by the Landscape
Architect. This equipment shall have a built-in agitator system and operating
capacity sufficient to agitate, suspend, and homogeneously mix a slurry containing
not less than 40 lbs. of fiber mulch plus a combination of 7 lbs. fertilizer solids for
each 100 gallons of water. The slurry distribution lines shall be large enough to
prevent stoppage and shall be equipped with a set of hydraulic spray nozzles which
shall place the slurry tank and spray nozzle within sufficient proximity to the area to
be seeded.
b.
Preparation: The slurry preparation shall take place at the site of work and shall
begin by adding water to the tank when the engine is at half throttle. When the water
level has reached the heights of the agitator shaft, good circulation shall be
established and at this time the seed shall be added. Fertilizer shall then be added,
followed by fiber mulch. The fiber mulch shall be added to the mixture after the
seed and when the tank is at least one-third filled with water. All fiber mulch shall
be added by the time the tank is two-thirds (2/3) to three-fourths (¾) full. Spraying
shall commence immediately when the tank is full.
[4/08]
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c.
14.6
Application: Apply hydro-mulch in the form of a slurry consisting of wood cellulose
fiber, seed, chemical additives, commercial fertilizer, and water. When hydraulically
sprayed on the soil surface, the hydromulching shall form a blotter-like ground cover
impregnated uniformly with seed and fertilizer and shall allow the absorption of
moisture and rainfall and percolation to the underlying soil. Remove all fiber applied
to drain gutter, streets, walls, and other construction. Leave site broom-clean.
General Slope Planting
The Contractor shall incorporate all soil amendments and fertilizers prescribed herein. The soil
preparation specified below shall be adjusted accordingly to the analysis.
Planting Preparation
14.6.1
Slope Texturing
14.6.1.1
Cut Slopes
These surfaces shall be roughened in a horizontal direction following the contour of the slope. The
roughened texture shall be made by hand-raking or similar mechanical means.
14.6.1.2
Fill Slopes
These surfaces shall be compacted and finished and also roughened in a horizontal direction
following the contour of the slope. The roughened texture shall be made by hand-raking or similar
mechanical means.
14.6.2
Weed Eradication Procedures
14.6.2.1
Manually remove all existing vegetation and dispose of it off-site.
14.6.2.2
Fertilize all planting areas with fertilizer based on Soil Labs recommendations. (See Planting Detail
Sheet). Add any and all soil amendments as required, per the soil analysis. Begin watering process
to activate fertilizer and additive chemicals.
14.6.2.3
Water all planting areas thoroughly and continuously for a period of two (2) consecutive weeks. The
District Inspector shall approve specific watering duration and frequency program designed to
germinate all residual weed seeds.
14.6.2.4
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Discontinue watering process for two (2) days, then apply "Round-Up" if perennial weeds appear on
the slopes. If annual weeds appear, use straight contact herbicides per the Inspector's
recommendations. No water shall be applied for a minimum of four (4) days following application
of contact weed killer.
14.6.2.5
Allow sufficient period of time to insure that all weeds are dead.
14.6.2.6
Water all planting areas thoroughly and continuously for a period of three (3) weeks. A shorter
watering period may be permissible at the discretion of the Inspector. Discontinue the watering
process for one (1) day prior to the second application of the herbicide spraying. Re-apply the
spraying operation with a straight contact weed killer, as per the Inspector's recommendations.
Allow a minimum of four (4) days without irrigation, for effective final weed kill.
14.6.2.7
Clear all desiccated weeds from the slopes to the finished grade.
14.6.2.8
Water all planting areas thoroughly and continuously for three (3) consecutive days to saturate upper
layers of soil prior to the hydroseeding operation.
14.6.2.9
Then allow planting area soil surface to dry out for one (1) day only, prior to the hydroseeding
application. Care must be taken not to allow the soil surface to be super-saturated with water prior
to the hydroseeding installation. At the same time, the soil surface should not be bone dry. There
should be some residual moisture within the first ½-inch of soil surface.
14.6.2.10
Begin the hydroseeding operation on all areas, as specified.
14.6.3
Planting
Planting shall be as specified previously in these Specifications.
14.6.4
Gro-Power Planting Tablets
Gro Power Tablets shall be used as previously provided in these Specifications.
14.6.5
Hydroseeding Specifications for Slope Areas
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14.6.5.1
Hydroseed Mix
Hydroseed mix and mulch shall be amended to suit specific site conditions. Verify hydroseed mix
with the Inspector upon results of the soil analysis. The mix shall be applied to all slope areas
directly after the installation of all plant materials as final dressing. See Planting Detail Sheet for
type and quantity of seed mix, fertilizer, and additional amendments.
14.6.6
Application
14.6.6.1
Equipment
Hydraulic equipment used for the application of the fertilizer, seed, and fiber mulch shall be of the
"Super Hydro-Seeder" type, as approved by the Inspector. This equipment shall have a built-in
agitator system and operating capacity sufficient to agitate, suspend, and homogeneously mix a
slurry containing not less than 40 lbs. of fiber mulch plus a combination of 7 lbs. fertilizer solids for
each 100 gallons of water. The slurry distribution lines shall be large enough to prevent stoppage
and shall be equipped with a set of hydraulic spray nozzles which shall place the slurry tank and
spray nozzle within sufficient proximity to the areas to be seeded.
14.6.6.2
Preparation
The slurry preparation shall take place at the site of work and shall begin by adding water to the tank
when the engine is at half throttle. When the water level has reached the heights of the agitator shaft,
good circulation shall be established and at this time the seed shall be added. Fertilizer shall then be
added, followed by fiber mulch. The fiber mulch shall only be added to the mixture after the seed
and when the tank is at least one-third (1/3) filled with water. All fiber mulch shall be added by the
time the tank is two-thirds (2/3) to three-fourths (¾) full. Spraying shall commence immediately
when the tank is full.
14.6.6.3
Application
When hydraulically sprayed on the soil surface, the hydro-mulching shall form a blotter-like ground
cover impregnated uniformly with seed and fertilizer and shall allow the absorption of moisture and
rainfall percolate to the underlying soil. Remove all fiber applied to drain gutter, streets, walls, and
other construction. Leave site broom-clean.
14.7
General Notes
See Planting Detail Sheet for further notes.
14.7.1
Clean Up
14.7.1.1
After all installation operations have been completed, remove all rubbish, excess soil, empty plant
containers, and trash from the site daily. All scars, ruts, or other marks in the area caused by this
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work shall be repaired and the ground left in a neat, orderly condition. Leave site in broom-clean
condition at the end of each working day. Hose down all paved areas, including walks and patios,
upon completion of all work.
14.7.1.2
The Contractor shall protect all areas being landscaped against trespassing and from damage at all
times. All District site keys shall be returned to Rancho California Water District before final
payment will be made.
14.7.2
Maintenance
14.7.2.1
The Contractor shall maintain during installation a sufficient number of men and adequate
equipment to perform the work herein specified. Plant maintenance work shall consist of applying
water, weeding, caring of plants including ground covers, shrubs, vines, and trees, edging and
mowing lawns, fertilizing, control of pests and diseases, and maintaining walks free of debris and
dirt.
Upon completion of each area of installation, the Contractor and Inspector shall conduct an
inspection of completed area along with the District's maintenance representative. At this time a list
of corrections, if any, shall be made which are the responsibility of the Contractor.
14.7.2.2
After all work has been completed, inspected, and accepted, all areas will be maintained for a period
of sixty (60) calendar days or as long as is necessary to establish thriving trees, shrubs, turf, and
ground cover areas without bare spots.
14.7.2.3
Keep all areas weed-free, adequately watered, and neatly cultivated for the 60-day period. Remove
all debris from site and keep the entire site broom-clean. Mow turf areas weekly. Hydroseeded turf
areas shall be irrigated after the slurry mulch has been applied and allowed to set for one (1) day.
The soil surface must be kept moist at all times during the germination period to avoid desiccation of
seedlings.
14.7.2.4
Re-seed all bare spots in turf areas at 2-week intervals and maintain until an even stand of turf,
without bare spots, is obtained. Re-seed all slope areas that fail to germinate evenly. Repair all
eroded surfaces at no cost to the District.
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14.7.2.5
Damage to any planted area shall be repaired immediately. Depressions caused by vehicles or foot
traffic shall be filled with topsoil, leveled, and replanted. Exterminate gophers and moles, and repair
damage.
14.7.2.6
The project shall be so cared for that a neat and clean condition will be presented at all times to the
satisfaction of the RCWD Inspector. The Landscape Contractor shall be expected to make a
minimum of one weekly visit for maintenance purposes.
14.7.2.7
At the end of the maintenance period, all areas that have been planted shall be fertilized with
commercial fertilizer, analysis 16-8-8 at 300 lbs. per acre, and watered thoroughly.
14.7.2.8
A retention of 10% of the total value of the landscaping items, sprinkler system items, and
maintenance items will be held during the maintenance period.
14.7.2.9
Necessary cultivating and weeding shall be done at no more than two-week intervals and shall be
done a minimum of six (6) times. Just prior to the end of the maintenance period, all planting areas
shall be treated with a pre-emergent herbicide per Inspector's recommendation.
14.7.2.10
Any plant materials which are damaged or die or fail to maintain a healthy, vigorous, and thriving
condition during the 60-day maintenance period, or during the execution of this Contract, shall be
replaced immediately by the Contractor as originally specified and at no additional cost.
14.7.2.11
Upon completion of the 60-day maintenance period, all plants shall be live, healthy, and free from
infections. All ground cover areas shall be clean, and free from weeds and debris. All sprinkler
heads shall be properly adjusted for the specific planting areas.
14.7.2.12
The Contractor shall request a final inspection seven (7) days prior to the end of the maintenance
period. This request shall be written and directed to the Inspector and the District's Maintenance
representative. Upon acceptance of the project, the Contractor shall be relieved of any further
maintenance.
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14.7.3
Guarantee
All turf, hand-planted and hydro-seeded ground cover, and shrubs shall be guaranteed to live and
grow for a period of sixty (60) days after installation and acceptance by the District. Any material
that fails to grow through the specified maintenance and guarantee period shall be replaced by the
Contractor at no cost to the District.
All trees shall grow in an upright position in a normal healthy manner for a period of one year after
the completion of the specified maintenance period and/or final acceptance by the Inspector.
Within fifteen (15) days after written notice to the Contractor by the Inspector during the guarantee
period, the Contractor shall agree to remove and replace all guaranteed plant materials which fail to
meet the requirements of the guarantee for any reason. Replacement shall be of a plant material as
originally specified and shall be guaranteed as specified for the original plant materials.
14.7.4
Inspections
14.7.4.1
All inspections specified herein shall be made by the District or its Inspector. The Contractor shall
request inspection at least two (2) working days in advance of the time that the inspection is
required.
14.7.4.2
Inspections will be required for the following parts of the work:
a.
Upon completion of grading and soil conditioning prior to planting;
b.
When trees are spotted for planting, but before planting holes are excavated;
c.
When planting and all other indicated or specified work, except the maintenance
period, has been completed. Acceptance shall establish the beginning of the
maintenance period; and,
d.
Final inspection with the District or its Inspector at the end of the maintenance
period.
14.7.5
Verification of Dimensions
14.7.5.1
All scaled dimensions are approximate. Before proceeding with any work, the Contractor shall
carefully check and verify all dimensions and quantities, and shall immediately inform the District or
its Inspector of any discrepancy between the drawings and / or specifications and actual
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conditions. No work shall be done in any area where there is such a discrepancy until approval for
same has been given by the District.
14.7.6
Utilities
14.7.6.1
The Contractor shall be responsible for verifying the location of all underground utilities, electric
cables, conduits, sprinkler lines, and all utility lines prior to any construction so that proper
precautions may be taken not to damage such improvements. In the event of a conflict between such
lines and plant locations, promptly notify the District who will arrange for relocations of one or the
other. Failure to follow this procedure places upon the Contractor the full responsibility for, at his
own expense, making any and all repairs for damages resulting from his work.
14.7.7
Existing Trees
14.7.7.1
Contractor is to insure the preservation of any existing trees on the site. Damage or loss of these
trees will result in replacement of equal size by the Landscape Contractor.
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