HomeMy WebLinkAboutNC0001422_LVSuttonSARP_Rev0_AppendixG_20161201Appendix G
Technical Specifications
TECHNICAL SPECIFICATIONS
L.V. SUTTON ENERGY COMPLEX
SITE ANALYSIS AND REMOVAL PLAN
December 2016
Revision 0
Prepared for
Duke Energy Progress, LLC
526 South Church Street
Charlotte, North Carolina 28202
Prepared by
Geosyntec Consultants of NC, PC
1300 South Mint Street, Suite 300
Charlotte, North Carolina 28203
License No. C-3500
TECHNICAL SPECIFICATIONS
SITE ANALYSIS AND REMOVAL PLAN
L.V. SUTTON ENERGY COMPLEX
WILMINGTON, NORTH CAROLINA
Section 02 21 00 Surveying
Section 31 00 00 Earthwork
Section 31 02 19.13 Geotextiles
Section 31 05 16 Granular Drainage Material
Section 31 11 00 Clearing, Grubbing, and/or Stripping
Section 31 23 33 Trenching and Backfilling
Section 31 25 00 Sediment and Erosion Control
Section 31 31 19 Vegetation
Section 31 37 00 Riprap
Section 32 92 19 Seeding
Section 33 42 13 Pipe Culverts
Section 33 49 00 Storm Water Structures and Swales
Section 34 71 00 Road Construction
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SECTION 02 21 00
SURVEYING
PART 1 GENERAL
1.01 SCOPE
A. This section describes the requirements for surveying during construction,
production of “as-built” documents, and computation of quantities for payment
purposes. Survey work will be required to delineate areas for stripping;
perform earthwork for general fill and CCR; and to perform other work, as
needed, to complete various construction activities.
1.02 RELATED SECTIONS AND PLANS
A. Section 31 11 00 - Clearing, Grubbing, and/or Stripping
B. Section 31 00 00 - Earthwork
C. Section 31 23 33 - Trenching and Backfilling
D. Section 31 05 16 - Granular Drainage Material
E. Section 31 31 19 - Vegetation
F. Construction Quality Assurance (CQA) Plan.
1.03 REFERENCES
A. National Geodetic Survey Standards.
1.04 SUBMITTALS
A. Upon request, interim surveys performed shall be submitted to the OWNER
with each payment request to substantiate the quantities claimed.
B. CONTRACTOR will be required to submit survey notes during construction
upon request by the ENGINEER.
1.05 PROJECT RECORD DOCUMENTS
A. CONTRACTOR shall maintain on-site, a complete and accurate survey log
documenting the survey work performed.
B. CONTRACTOR shall maintain on-site, a plan clearly showing all site
reference points, survey control points, and benchmarks.
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C. CONTRACTOR shall maintain on-site an accurate and current set of marked-
up drawings indicating the as-built conditions.
D. As-built surveys, stamped and signed, by a State of North Carolina
Licensed/Registered Land Surveyor or Professional Engineer shall be
submitted immediately following the completion of any applicable construction
activity. Complete as-built surveys shall be submitted upon substantial
completion of each phase of construction and are a prerequisite for contract
closeout.
E. Upon completion of each work item, the CONTRACTOR shall prepare and/or
update the as-built drawings.
PART 2 PRODUCTS
2.01 MATERIALS AND SURVEY EQUIPMENT
A. Provide materials and survey equipment as required to properly perform the
surveys, including, but not limited to, instruments, tapes, rods, measures,
mounts, and tripods, stakes and hubs, nails, ribbons, other reference
markers, and all else as required.
B. The survey instruments used for this work shall be precise and accurate to
meet the needs of the work described. All survey instruments should be
capable of reading to a precision of 0.001 ft and with a setting accuracy of ±
0.8 seconds.
PART 3 EXECUTION
3.01 GENERAL
A. Maintain accurate and complete notes of surveys:
1. Handwritten survey notes and information shall be written with lead
pencil(s) and entered in "write in rain" notebooks. A copy of the
numbered, dated, and signed field book pages shall be provided to the
ENGINEER upon request for use in checking the work.
2. Electronic field survey information shall be collected and backup
equipment shall be available in the event of equipment malfunction.
a. Electronic format for printed output of data collector field survey notes
shall be compatible with the approved field book notation format.
b. Electronic format for printed output of data collector field work shall be
compatible with the CONTRACTOR's and ENGINEER's computer
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equipment and software for verifying and checking the work. A copy of
the data disk shall be submitted to the ENGINEER upon request.
B. During construction, survey notes shall be retained by the CONTRACTOR
and shall be submitted to the ENGINEER for review upon request. Prior to
the placement of successive soil layer, the CONTRACTOR shall submit a
written statement certifying compliance of the preceding layer thickness and
grades to the ENGINEER. Surveys will be required from the CONTRACTOR
prior to approval by the ENGINEER for the placement of overlying materials.
C. Conformance check surveys for elevation and for horizontal coordinates shall
be to the nearest 0.01 ft and for angles shall be to the nearest 20 seconds.
D. Measurement and payment surveys for elevation and for horizontal distances
shall be to the nearest 0.1 ft ± 0.05 ft.
E. Perform construction layout surveys in advance of scheduled construction
activities. At completion of a survey, provide a copy of the field notes,
drawings, or sketches to the ENGINEER for review. The CONTRACTOR
shall allow the CQA Consultant and/or ENGINEER three business days for
review. The CONTRACTOR is responsible for rework and/or construction
delays caused by survey or staking errors.
F. Set slope stakes in accordance with accepted surveying practices.
G. Set grade stakes required for construction activities as the work progresses.
Grade stakes shall be set regardless of whether GPS equipped grading
equipment is used. The grade stakes are required to allow the OWNER,
ENGINEER, and CQA personnel to readily field verify elevations and grades.
Set fine grade stakes on all items for which the Construction Drawings specify
a definite grade line.
H. Upon completion of the work, the CONTRACTOR shall provide the
ENGINEER with all original surveying field notes, layouts, computations, and
electronic files in standard bound survey notebooks. Electronic file
information shall be compatible with the ENGINEER's computer equipment
and software as requested.
I. Protect survey control points and replace disturbed survey control points at no
additional cost to the Owner.
3.02 SPECIFIC FIELD REQUIREMENTS
A. Establish temporary control points, as necessary, to support construction
activities.
B. Survey Documentation:
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1. Record the following information in survey notebooks for each control
point established and for all other surveying:
a. control point designation;
b. northing and easting in State Plane North American Datum (NAD83);
c. elevation in North American Vertical Datum (NAVD88);
d. date of establishment;
e. description and sketch of the control point location; and
f. a minimum of three reference features that can be seen from the
control point.
2. Document survey work in the field notebooks using the format and
procedures described below:
a. title and consecutive number on the front cover;
b. consecutively numbered pages;
c. table of contents, indicated by survey task, on the first numbered page;
d. legend indicating symbols used in survey notes;
e. names of survey team for each task;
f. notes on weather and equipment;
g. date and time on each page to indicate when work was recorded;
h. notes in a uniform character such that they can be interpreted and
used by anyone with survey knowledge; and
i. description and/or sketches of the survey control used.
C. Preliminary Surveys:
1. Earthwork Staking: Stakes for cut and fill limits shall establish the exterior
limits of excavations and berms. The maximum staking interval shall be
50 feet. Stakes shall be prominently noted with description of point,
vertical distance to design elevation, and offset distance as applicable.
2. Structures: Stake structure centerlines so that the orientation, position,
limits, and foundation elevation(s) are positively identified. Mark stakes to
reflect the design elevation and offset distance as applicable.
3. Ditches and Channels: Stake ditches and channels such that the layout
remains undisturbed during construction.
4. Pipes and Culverts: Stake pipes and culverts on 50-ft maximum
stationing. Place offset stakes beyond excavation limits and material
stockpiles. Continuously check invert elevation during placement.
D. Final Surveys:
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1. Final topography shall be staked at nominal 50-foot intervals. Additionally,
the following points shall be staked and noted as applicable.
a. Grade breaks.
b. Mid-point of slopes less than 50 ft.
c. Points of horizontal curvature and tangency.
d. Points of stationing equation.
2. Pipes and culverts: Survey alignment and elevations of the top of all pipes
at each change in direction, change in grade, all fittings (i.e., couplers,
reducers, blind flanges, repairs, elbows, etc.), and at every 50 feet
between fittings or changes in grade and direction. Survey inlet and outlet
inverts of all pipes, culverts, and structures.
3. Survey other features including: buried electrical, manholes, leachate
piping, pipe penetrations, and edge of liner markers.
3.03 SURVEYS FOR MEASUREMENT AND PAYMENT
A. Perform surveys to evaluate quantities of work performed and percent of
completed work.
B. Calculate and certify quantities and submit survey results, calculations, and
certification to the OWNER and ENGINEER for review and evaluation.
3.04 SURVEYS FOR CONFORMANCE CHECKS AND AS-BUILT
DOCUMENTS
A. Survey the following surfaces to verify the lines and grades achieved during
construction:
1. For berms, ditches, drainage swales, roads, and other earthwork:
a. original grade surface;
b. compacted surface of cut slopes;
c. top of general fill; and
d. finished grade surface.
B. Perform earthwork conformance checks and as-built surveying immediately
upon completion of a given installation to verify compliance with the
Construction Drawings, facilitate progress, and avoid delaying
commencement of the next installation. Provide the following minimum
spacing and locations for survey points:
1. surfaces with gradients less than 10 percent, survey on a square grid
spaced not wider than 50 ft;
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2. on slopes greater than 10 percent, a square grid spaced not wider than 50
ft shall be used, but in all cases, a line at the crest, midpoint, and toe of
the slope shall be taken;
3. a line of survey points spaced not more than 50 ft apart shall be taken
along any slope break (this will include the inside edge and outside edge
of any bench on a slope); and
4. a line of survey points spaced not more than 50 ft apart and at each end
shall be taken at the top of any pipes, culverts, discharge structures, or
other appurtenances.
3.05 PROJECT AS-BUILT DOCUMENTS
A. The CONTRACTOR shall provide partially-complete or finalized as-built
survey information at any stage of the work to the Project Manager,
ENGINEER, or OWNER within 24 hours of being requested. These interim
submittals may be in the form of as-built drawings or in the form of tabulated
coordinates of verified construction control points, as requested. This
information may be used to verify proper layout and layer thicknesses as the
work progresses, to calculate material quantities, and to perform other
activities deemed necessary by the Project Manager to check the
CONTRACTOR's work.
B. Within 7 days of construction completion, the contractor shall submit finalized
as-built survey documents. Finalized as-built survey documents shall meet
the following requirements:
1. Four (4) copies of as-built drawings shall be provided on D-size (24” x 36”)
sheets with a north arrow, and a standard scale noted (e.g., 1”=50’,
1”=100’, etc.), unless otherwise approved by the ENGINEER. In addition,
two CDs containing AutoCAD compatible versions of the as-built drawings
shall be provided.
2. Each page of the as-built drawings shall bear a title block that includes: (i)
the name and address of the general contractor responsible for the work;
(ii) the name, date, address, and original signature and seal of the
registered land surveyor who prepared the as-built drawing; and (iii) the
facility / project name and location. The signatures included in the title
block shall certify that the as-built drawings do, in fact, reflect the true as-
built conditions as located under the direct supervision of the registered
surveyor and/or professional engineer. The OWNER or ENGINEER will
review and approve a preliminary set of finalized as-built drawings. The
registered land surveyor shall make all appropriate changes to the as-built
drawings to incorporate any OWNER or ENGINEER comments and to
comply with these requirements.
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3. As-built drawings shall be clearly legible (e.g., no overlapping text) and
include a legend/key that identifies points, series of points, and symbols
shown on the sheet.
4. Fonts on all as-built drawings shall be black (i.e., not screened or
grayscale), clear, and a minimum of 1/8 inch in height.
[END OF SECTION]
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SECTION 31 00 00
EARTHWORK
PART 1 GENERAL
1.01 SCOPE
A. This section includes the requirements for site preparation, excavation,
surface water control, excavation dewatering, stockpiling, subgrade
preparation, general fill, subbase preparation, and earthwork materials.
1.02 RELATED SECTIONS AND PLANS
A. Section 02 21 00 - Surveying
B. Section 31 11 00 - Clearing, Grubbing, and/or Stripping
C. Section 31 23 33 - Trenching and Backfilling
D. Section 31 25 00 - Sediment and Erosion Control
E. Construction Quality Assurance (CQA) Plan
1.03 REFERENCES
A. Latest version of American Society of Testing and Materials (ASTM)
standards and other standards noted in this specification.
1.04 SUBMITTALS
A. Within 15 calendar days from Notice to Proceed, submit to the ENGINEER for
review an Earthwork Work Plan. The Earthwork Work Plan shall include, at a
minimum:
1. list of equipment proposed for the construction activities including
earthwork and other scope of work specified described in the contract
documents;
2. construction methods for each construction activity;
3. dewatering methods and techniques;
4. coordination of survey requirements for the earthwork;
5. proposed locations of temporary soil stockpile areas;
6. coordination of earthwork activities with surface water management and
erosion and sediment control measures;
7. schedule for earthwork activities; and
8. dust control measures.
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1.05 CONSTRUCTION QUALITY ASSURANCE
A. The earthwork will be monitored and tested by the CQA Consultant as
required in the CQA Plan.
B. The CQA Consultant will perform soil conformance testing on general fill to
establish compliance with this section. Provide equipment and labor to assist
the CQA Consultant in obtaining conformance samples from excavations and
stockpiles.
C. The CQA Consultant will perform soil performance testing on the subgrade
surface and general fill lifts to evaluate compliance with this section. The
CQA Consultant will indicate any portion of the earthwork that does not meet
the requirements of this section and will delineate the extent of the
nonconforming area.
D. The CONTRACTOR shall correct all deficiencies and non-conformances
identified by the CQA Consultant at no additional cost to the OWNER.
E. The CONTRACTOR shall be aware of the activities required of the CQA
Consultant by the CQA Plan and shall account for these activities in the
construction schedule.
1.06 EXISTING CONDITIONS
A. Existing site surface and subsurface conditions, based on available site data,
are indicated on the Construction Drawings.
B. CONTRACTOR shall verify existing conditions as indicated in Section 02 21
00.
PART 2 PRODUCTS
2.01 MATERIALS
A. Obtain material for general fill from borrow sources designated or approved
by the ENGINEER.
B. General fill material shall be free of debris, foreign objects, large rock
fragments, organics, and other deleterious materials. General fill material
shall classify as SW, SP, SW-SM, SW-SC, SP-SM, SP-SC, SM, or SC
according to the Unified Soil Classification System (per ASTM D 2487).
General fill material having the indicated classification is expected to be
available from designated or approved borrow sources. Soils having other
classifications may be acceptable as general fill, if approved by the
ENGINEER.
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2.02 EQUIPMENT
A. Furnish compaction equipment to achieve the required minimum soil dry
density within the range of acceptable moisture contents.
B. Furnish hand compaction equipment, such as a walk-behind compactor, hand
tampers, or vibratory plate compactor, for compaction in areas inaccessible to
large compaction equipment.
C. Furnish water trucks, pressure distributors, or other equipment designed to
apply water uniformly and in controlled quantities to variable surface widths
for required in-place moisture adjustment, to prevent drying of soil surfaces,
and for dust control.
D. Furnish equipment such as excavators, scrapers, compactors, loaders,
dozers, earth hauling equipment and all other equipment, as required for
earthwork construction.
PART 3 EXECUTION
3.01 GENERAL
A. All general fill material to be compacted shall be at a moisture content that will
readily facilitate effective compaction.
B. General fill material placed wet that exhibits pumping shall not be accepted
regardless of the in-place density or percent compaction. Wet materials shall
not be placed and compacted. Wet materials, if used, shall be allowed to dry
in place, if feasible, or removed and replaced with suitable materials as
directed by the ENGINEER.
3.02 SITE PREPARATION
A. Install construction fence and barricades around open trenches and
excavated areas.
B. Install erosion and sediment controls in relevant areas of construction as
indicated on the Construction Drawings and as required by Section 31 25 00.
Maintain the erosion and sediment controls for the duration of the Contract
and until the contained areas are vegetated in accordance with Section 31 31
19. Accumulated sediment behind silt fences and from drainage swales and
structures shall be removed as required or as directed by the ENGINEER.
C. Prior to any earthwork activity, perform clearing, grubbing, and/or stripping as
indicated on the Construction Drawings and in accordance with Section 31 11
00.
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3.03 SURFACE WATER CONTROL
A. Installation of surface water and erosion controls shall be in accordance with
Section 31 25 00.
B. Install surface water and erosion controls in and around work areas to control
runoff and erosion and to prevent surface water run-on into excavations.
Perimeter controls may include shallow ditches, berms, or localized
regrading.
3.04 EXCAVATION
A. Excavate designated areas to the subgrade elevations or excavation limits
indicated on the Construction Drawings. Stockpile excavated material in
areas designated by the Project Manager for use in subsequent construction.
3.05 EXCAVATION DEWATERING
A. Anticipate seepage of groundwater into, and accumulation of surface water
runoff in excavations. Manage groundwater and surface water in excavations
in accordance with this section.
B. Prevent surface water run-on from adjacent areas from entering the
excavation.
C. All fill operations, except hydraulic filling, shall be performed in the dry.
CONTRACTOR shall expect that groundwater is at or near the existing
ground surface and shall be prepared to lower the groundwater in local areas
as required. CONTRACTOR shall expect that work areas may be inundated
with water and be prepared to dewater as required to perform work.
3.06 STOCKPILING
A. Separate stockpiles by material type.
B. Stockpile excavated soils at the areas indicated on the Construction Drawings
or as designated by the ENGINEER.
C. Construct stockpiles no steeper than 3H:1V (horizontal:vertical), grade to
drain, seal by tracking perpendicular to the slope contours with a dozer, and
dress daily during periods when fill is taken from the stockpile.
D. Silt fence or berms shall be constructed at the base of stockpiles that will not
be immediately used.
E. Restore all areas used for stockpiling when stockpiles are removed as
directed by the OWNER.
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3.07 SUBGRADE PREPARATION
A. Subgrade material shall consist of soil relatively free of debris, foreign objects,
organics and other deleterious materials.
B. Compact all subgrade to a minimum 95 percent of the standard Proctor
(ASTM D 698) maximum dry density at a moisture content as required to
attain the specified density or as approved by the ENGINEER.
C. In the presence of the CQA Consultant, perform subgrade proof rolling by
driving a loaded dump truck (minimum weight of 10 tons per axle and
minimum loaded weight of 20 tons) or other pneumatic-tired vehicle, back and
forth across the area to confirm the firmness of subgrade surface. Overlap
the passes such that one set of tires on each pass runs between the two sets
of tire tracks from the previous pass. Soils shall not exhibit pumping or
develop ruts more than two inches in depth. Minor rutting, defined as less
than two inches in depth, shall be regraded or covered with general fill to
match finish grade.
D. Subgrade for general fill shall be scarified to a depth of 2 inches using
equipment identified in this section.
E. Unsuitable soils shall be removed and replaced with general fill to a minimum
depth of 2 feet below the proposed subgrade elevation. Suitable soil
exhibiting pumping or developing ruts more than two inches in depth will be
removed to a minimum depth of 1 foot or dried in place, if feasible. Compact
the general fill materials to a minimum 95 percent of standard Proctor (ASTM
D 698) maximum dry density at a moisture content as required to attain the
specified density or as approved by the ENGINEER.
F. In excavations or other areas where water accumulates, implement measures
to remove the water in accordance with this section. Maintain the subgrade
surface free of standing water and in firm condition to meet proof rolling
requirements of this section. Maintain dewatered areas until overlying
construction is complete.
G. Manage surface water as described in Section 31 25 00.
3.08 GENERAL FILL
A. Use fill that meets the requirements of this section. Place fill to the limits and
grades shown on the Construction Drawings.
B. Place general fill material on surfaces that are free of debris, vegetation, or
other deleterious material.
C. Place general fill material in loose lifts with a thickness of 12 inches ± 1 inch.
In areas where compaction is to be performed using hand operated
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equipment, place the fill material in loose lifts with a loose thickness of 6
inches ± 1 inch.
D. Prior to placing a succeeding lift of material over a previously compacted lift,
thoroughly scarify the previous lift to a depth of 2 inches by discing, raking, or
tracking with a dozer. Moisture condition the preceding lift if not within the
acceptable moisture range.
E. The trafficking of scarified surfaces by trucks or other equipment, except
compaction equipment, is not permitted.
F. Except as specified in this section, compact general fill in each lift to at least
95 percent of its standard Proctor maximum dry density (ASTM D 698).
Compact general fill at moisture content as required to attain the specified
density or as approved by the ENGINEER.
G. Do not place fill during periods of precipitation. Placement may occur during
periods of misting or drizzle, but only as authorized by the ENGINEER.
H. Dust shall be controlled by the application of water to the general fill surfaces.
3.09 SURVEY CONTROL
A. Survey limits and elevations of excavations, subgrade, and top of general fill
in accordance with Section 02 21 00.
3.10 TOLERANCES
A. Perform the earthwork construction related to the berms, and composite liner
system to within ±0.1 ft. of the elevations and within 10 percent of the slopes
indicated on the Construction Drawings.
B. Positively draining slopes shall be maintained during all construction.
[END OF SECTION]
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SECTION 31 02 19.13
GEOTEXTILES
PART 1 GENERAL
1.01 SCOPE
A. This section includes the requirements for geotextile products and installation.
1.02 RELATED SECTIONS AND PLANS
A. Section 31 23 33 - Trenching and Backfilling
B. Section 31 05 16 - Granular Drainage Material
C. Construction Quality Assurance (CQA) Plan
1.03 REFERENCES
A. Latest version of American Society of Testing and Materials (ASTM)
standards and other standards noted in this specification.
B. Federal Standard No. 751a - Stitches, Seams, and Stitching.
1.04 SUBMITTALS
A. Submit the following to the ENGINEER for review not less than 21 calendar
days prior to use:
1. geotextile Manufacturer and product name;
2. certification of minimum average roll values and the corresponding test
procedures for all geotextile properties listed in Tables 31 02 19.13-1 and
31 02 19.13-2; and
3. projected geotextile delivery dates.
B. Submit to the ENGINEER for review at least 14 calendar days prior to
geotextile placement, manufacturing quality control certificates for each roll of
geotextile as specified in this section.
1.05 CONSTRUCTION QUALITY ASSURANCE
A. The installation of geotextiles will be monitored by the CQA Consultant as
required in the CQA Plan.
B. The CQA Consultant will perform material conformance testing of the
geotextiles as required in the CQA Plan.
C. The CONTRACTOR shall be aware of the activities required of the CQA
Consultant by the CQA Plan and shall account for these activities in the
construction schedule.
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D. The CONTRACTOR shall correct all deficiencies and nonconformances
identified by the CQA Consultant at no additional cost to the OWNER.
PART 2 PRODUCTS
2.01 GEOTEXTILE
A. Furnish geotextile products with minimum average roll values (95 percent
lower confidence limit) meeting or exceeding the required property values in
Tables 31 02 19.13-1 (for geotextile filters) and 31 02 19.13-2 (for geotextile
separators).
B. Furnish geotextiles that are stock products.
C. Furnish geotextiles that are manufactured from first quality polymers, with no
more than 20 percent reclaimed polymer used in production.
D. Furnish polymeric threads for stitching that are ultra-violet (UV) light stabilized
to at least the same requirements as the geotextile to be sewn. Furnish
polyester or polypropylene threads that have a minimum size of 2,000 denier.
2.02 MANUFACTURING QUALITY CONTROL
A. Sample and test the geotextile to demonstrate that the material conforms to
the requirements of this section.
B. Perform manufacturing quality control tests to demonstrate that the
geotextiles properties conform to the values specified in Tables 31 02 19.13-1
and 31 02 19.13-2. Perform as a minimum, the following manufacturing
quality control tests at a minimum frequency of once per 50,000 square feet
with minimum of 1 test per resin lot:
Test Procedure
Mass per unit area ASTM D 5261
Grab strength ASTM D 4632
Tear strength ASTM D 4533
Static puncture strength ASTM D 6241
C. Perform additional manufacturing quality control tests on the geotextile filter at
a minimum frequency of once per 100,000 square feet with minimum of 1 test
per resin lot, to demonstrate that the apparent opening size (ASTM D 4751)
and permittivity (ASTM D 4491) of the geotextile conform to the values
specified in Table 31 02 19.13-1.
D. Submit quality control certificates signed by the geotextile manufacturer
quality control manager. The certificates shall state that the geotextiles are
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continuously inspected and are needle-free. The quality control certificates
shall also include: lot, batch, and roll number and identification; and results of
manufacturing quality control tests including description of test methods used.
E. Do not supply any geotextile roll that does not comply with the manufacturing
quality control requirements.
F. If a geotextile sample fails to meet the quality control requirements of this
section, sample and test rolls manufactured at the same time or in the same
lot as the failing roll. Continue to sample and test the rolls until the extent of
the failing rolls are bracketed by passing rolls. Do not supply failing rolls.
2.03 PACKAGING AND LABELING
A. Supply geotextiles in rolls wrapped in relatively impermeable and opaque
protective wrapping. Wrapping which becomes torn or damaged shall be
repaired with similar materials.
B. Mark or tag geotextile rolls in accordance with ASTM D 4873 with the
following information:
1. manufacturer's name;
2. product identification;
3. lot or batch number;
4. roll number; and
5. roll dimensions.
C. Geotextile rolls not labeled in accordance with this section or on which labels
are illegible upon delivery to the site shall be rejected and replaced at no
expense to the OWNER.
2.04 TRANSPORTATION
A. Deliver geotextiles to the site at least 14 calendar days prior to the planned
deployment date to allow the CQA Consultant adequate time to perform
conformance testing on the geotextile samples as described in the CQA Plan.
2.05 HANDLING AND STORAGE
A. Protect geotextiles from sunlight, moisture, excessive heat or cold, puncture,
mud, dirt, and dust or other damaging or deleterious conditions. Follow all
geotextile manufacturer recommendations for handling and storage.
Geotextile rolls shall be covered with additional tarp cover (in addition to the
roll cover) to prevent damage to the rolls.
B. Store geotextile rolls on palates or other elevated structures. Do not store
geotextile rolls directly on the ground.
Section 31 02 19.13: Geotextiles
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C. Outdoor storage of geotextile rolls shall not exceed the manufacturer's
recommendation or longer than 6 months, whichever is less.
PART 3 EXECUTION
3.01 PLACEMENT
A. Do not commence geotextile installation until the CQA Consultant completes
conformance evaluation of the geotextiles and performance evaluation of
previous work, including evaluation of CONTRACTOR's survey results for
previous work.
B. Handle geotextiles so as to ensure they are not damaged in any way.
C. Take necessary precautions to prevent damage to underlying layers including
rutting during placement of the geotextiles.
D. After unwrapping the geotextiles from its opaque cover, do not leave them
exposed for a period in excess of 30 calendar days.
E. If white colored geotextiles are used, take precautions against "snow
blindness" of personnel.
F. Examine the geotextile surface after installation to ensure that no potentially
harmful foreign objects are present. Remove any such objects and replace
any damaged geotextiles.
3.02 SEAMS AND OVERLAPS
A. Continuously overlap a minimum of 6 inches and sew filter geotextiles (i.e.,
spot sewing is not allowed) using a "single prayer" seam. Sew seams using
Stitch Type 401 as per Federal Standard No. 751a. In lieu of sewing,
geotextile filters may be overlapped a minimum of two feet.
B. Do not install horizontal seams on slopes that are steeper than 10 horizontal
to 1 vertical. Seams shall be along, not across, the slopes.
C. Overlap separator geotextiles a minimum of 12 inches and ensure that the
overlap is maintained.
3.03 REPAIR
A. Repair any holes or tears in the geotextiles using a patch made from the
same geotextile material. Extend geotextile patches a minimum of 1 foot
beyond the damaged area. Sew geotextile patches into place no closer than
1 inch from any panel edge. Should any tear exceed 50 percent of the width
of the roll, remove and replace that roll.
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B. Remove any soil or other material that may have penetrated the torn
geotextiles.
3.04 PLACEMENT OF SOIL MATERIALS
A. Place soil materials on top of geotextiles in such a manner as to ensure that:
1. the geotextiles and the underlying materials are not damaged; and
2. slippage does not occur between the geotextile and the underlying layers
during placement.
B. Spread soil on top of the geotextile to cause the soil to cascade over the
geotextile rather than be shoved across the geotextile.
C. Place aggregate over geotextile separators as indicated on the Construction
Drawings prior to trafficking.
D. Place soil over geotextile filters as indicated on the Construction Drawings
prior to trafficking.
Section 31 02 19.13: Geotextiles
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TABLE 31 02 19.13-1
REQUIRED PROPERTY VALUES FOR GEOTEXTILE FILTER
Properties (6) Qualifier Units (5) Specified
Values(1) Test method
Product
Requirements
Type -- -- Nonwoven
needle-punched --
Polymer composition Minimum %
95
polypropylene
or polyester by
wt
--
Mass per unit area Minimum oz/yd2 8 ASTM D 5261
Filter Requirements
Apparent opening
size Maximum mm O95 ≤ 0.21 ASTM D 4751
Permittivity Minimum sec-1 0.5 ASTM D 4491
Mechanical
Requirements
Grab strength Minimum lb 200 ASTM D 4632(2)
Tear strength Minimum lb 75 ASTM D 4533(3)
Static puncture
strength Minimum psi 500 ASTM D 6241
Durability
Requirements
Ultraviolet Resistance Minimum % 70 ASTM D 4355
Notes:
1. All values represent minimum average roll values.
2. Minimum of values measured in machine and cross machine directions with 1 inch
clamp on Constant Rate of Extension (CRE) machine.
3. Minimum value measured in machine and cross machine direction.
4. Not Used.
5. mm = millimeter % = percent
oz/yd2 = ounce per square yard sec = second
lb = pound psi = pound per square inch
6. See Paragraph 2.02 for required MQC test frequencies.
Section 31 02 19.13: Geotextiles
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TABLE 31 02 19.13-2
REQUIRED PROPERTY VALUES FOR GEOTEXTILE SEPARATOR
Properties (6) Qualifier Units (5) Specified
Values (1) Test method
Product Requirements
Type -- --
Nonwoven
needle-
punched
--
Polymer composition Minimum %
95
polypropylen
e or polyester
--
Mass per unit area Minimum oz/yd2 8 ASTM D 5261
Mechanical
Requirements
Grab strength Minimum lb 200 ASTM D 4632(2)
Tear strength Minimum lb 75 ASTM D 4533(3)
Static puncture
strength Minimum psi 500 ASTM D 6241
Durability
Requirements
Ultraviolet Resistance Minimum % 70 ASTM D 4355
Notes:
1. All values represent minimum average roll values.
2. Minimum of values measured in machine and cross machine directions with 1 inch
clamp on Constant Rate of Extension (CRE) machine.
3. Minimum value measured in machine and cross machine direction.
4. Not Used
5. % = percent
oz/yd2 = ounce per square yard
lb = pound
psi = pound per square inch
6. See Paragraph 2.02 for required MQC test frequencies.
[END OF SECTION]
Section 31 05 16: Granular Drainage Material
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GC5770\31 05 16 Granular Drainage Material.docx 31 05 16-1 December 2015
SECTION 31 05 16
GRANULAR DRAINAGE MATERIAL
PART 1 GENERAL
1.01 SECTION INCLUDES
A. This section includes the requirements for granular drainage material.
1.02 RELATED SECTIONS AND PLANS
A. Section 02 21 00 - Surveying
B. Section 31 02 19.13 - Geotextiles
C. Construction Quality Assurance (CQA) Plan
1.03 REFERENCES
A. Latest version of American Society of Testing and Materials (ASTM)
standards and other standards noted in this specification.
1.04 SUBMITTALS
A. For each source of granular drainage material, submit the following to the
ENGINEER for review not less than 21 calendar days prior to use:
1. source of the material;
2. test results conducted on each material such that the material is fully
represented in accordance with ASTM C 136, ASTM D 2434, and ASTM
D 3042; and
3. a 50-pound representative sample of the material.
1.05 CONSTRUCTION QUALITY ASSURANCE
A. The installation of the granular drainage material will be monitored by the
CQA Consultant as required in the CQA Plan.
B. The CQA Consultant will perform material conformance testing and
installation quality control testing on the granular drainage materials as
required in the CQA Plan.
C. The CONTRACTOR shall be aware of the activities required of the CQA
Consultant by the CQA Plan and shall account for these activities in the
construction schedule.
D. The CONTRACTOR shall correct all deficiencies and nonconformances
identified by the CQA Consultant at no additional cost to the OWNER.
Section 31 05 16: Granular Drainage Material
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GC5770\31 05 16 Granular Drainage Material.docx 31 05 16-2 December 2015
PART 2 PRODUCTS
2.01 MATERIALS
A. Furnish granular drainage materials consisting of homogeneous crushed or
natural stones that is free of materials that, due to their nature or size, are
deleterious to the intended use as determined by the ENGINEER.
B. Granular drainage material shall be rounded or subrounded (as defined by
ASTM D 2488), shall have a gradation (per ASTM C 136) that meets the
requirements for a No. 57 stone in ASTM D 448, and shall have a minimum
hydraulic conductivity of 1 cm/sec based on laboratory permeability testing
conducted in accordance with the ASTM D 2434.
C. Furnish granular drainage material having less than 5 percent loss by weight
when tested in accordance with ASTM D 3042.
2.02 EQUIPMENT
A. Furnish, operate, and maintain equipment necessary to transport, place, and
spread the granular drainage materials without damage to adjacent
geosynthetics.
PART 3 EXECUTION
3.01 MATERIAL PLACEMENT
A. Do not commence placement of the granular drainage material until the CQA
Consultant has completed conformance evaluation of the material and
evaluation of previous work, including evaluation of the CONTRACTOR's
survey results for previous work.
B. Place the granular drainage material to the minimum thicknesses and limits
indicated on the Construction Drawings.
C. Surround granular drainage material with geosynthetic material as indicated
on the Construction Drawings. Care shall be taken to avoid damage to
geosynthetics during granular drainage material placement.
3.02 SURVEY CONTROL
A. Survey the limits and elevations of the top of the granular drainage material in
accordance with Section 02 21 00.
3.03 TOLERANCES
A. Construct the granular drainage material to the minimum thicknesses indicated
on the Construction Drawings.
Section 31 05 16: Granular Drainage Material
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GC5770\31 05 16 Granular Drainage Material.docx 31 05 16-3 December 2015
[END OF SECTION]
Section 31 11 00: Clearing, Grubbing, and Stripping
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GC5770\31 11 00 Clearing, Grubbing, and Stripping.docx 31 11 00-1 December 2016
SECTION 31 11 00
CLEARING, GRUBBING, AND/OR STRIPPING
PART 1 GENERAL
1.01 SCOPE
A. This section describes the requirements for clearing, grubbing, and/or stripping
activities. Clearing, grubbing, and/or stripping activities will be required to
perform the earthwork, and to perform other work, as needed, to complete
various construction activities.
1.02 RELATED SECTIONS AND PLANS
A. Section 02 21 00 - Surveying
B. Section 31 00 00 - Earthwork
C. Section 31 25 00 - Sediment and Erosion Control
D. Section 31 31 19 - Vegetation
E. Construction Quality Assurance (CQA) Plan
1.03 COMPLIANCE WITH REGULATIONS
A. It is the sole responsibility of the CONTRACTOR to be completely familiar with
and to follow all local, state, and federal regulations pertaining to the work
required in this section.
1.04 CONSTRUCTION QUALITY ASSURANCE
A. Clearing, grubbing, and/or stripping operations shall be monitored by the CQA
Consultant as outlined in the CQA Plan.
B. The CONTRACTOR shall be aware of the activities set forth in the CQA Plan
and shall account for these activities in the construction schedule.
C. The CONTRACTOR shall assist CQA personnel in every manner necessary
for the proper performance of activities set forth in the CQA Plan.
D. CQA testing or inspections in no manner relieves the CONTRACTOR of the
responsibility to perform all work in conformance with the Construction
Drawings and Specifications.
E. If quality control or quality assurance tests indicate work does not meet
specified requirements, the CONTRACTOR shall perform the work as directed
by the CQA Consultant at no additional cost to the OWNER.
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1.05 EXISTING CONDITIONS
A. The CONTRACTOR shall comply with applicable regulations in locating and
providing clearance for all underground and above ground utilities, if applicable,
prior to beginning construction activities. The CONTRACTOR shall
immediately notify the OWNER and the ENGINEER if utility lines or structures
not shown on the Construction Drawings are encountered. Repair of damage
and all restitution for liabilities resulting from damage to existing facilities due
to activities by the CONTRACTOR shall be at the CONTRACTOR’s expense.
PART 2 PRODUCTS
2.01 MATERIALS
A. Materials to be cleared, grubbed, and/or stripped include trees, shrubs, debris,
muck, or other foreign matter, as needed, to develop the work area and enable
construction activities.
B. Vegetative stabilization and erosion control of stripped soil stockpiles shall be
as specified in Section 31 25 00.
PART 3 EXECUTION
3.01 FAMILIARIZATION
A. Prior to implementing any of the work described in this section, the
CONTRACTOR shall become thoroughly familiar with the site, the site
conditions, and all portions of the work described in this section.
B. CONTRACTOR shall note that the elevation of groundwater is at or near the
existing ground surface for areas covered under this Contract. Some areas
may also be inundated with water at the start of construction. CONTRACTOR
is responsible for any dewatering required to execute the required work.
C. Inspection:
1. Prior to implementing any of the work in this section, the CONTRACTOR
shall carefully inspect and verify that related work required by other sections
is complete to the point where the work described in this section may
properly commence without adverse impact.
2. If the CONTRACTOR has any concerns regarding the related work required
by other sections, he shall notify the ENGINEER in writing prior to the
commencement of operations. Failure to notify the ENGINEER will be
construed as CONTRACTOR acceptance of the related work of all other
sections.
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3.02 SEDIMENT AND EROSION CONTROL
A. Prior to implementing any work described in this section, the CONTRACTOR
shall install all sediment and erosion controls in the relevant area(s) of
construction.
B. CONTRACTOR is solely responsible for selecting, implementing, and
maintaining proper and fully adequate sediment and erosion controls at all
times during construction.
3.03 CLEARING AND GRUBBING
A. Clearing and/or grubbing shall be performed in areas identified in the contract
documents or as directed by the ENGINEER. All sediment and erosion
controls, as described in Section 31 25 00 of the Specifications or as indicated
on the Construction Drawings, shall be in place before the start of clearing.
B. If weather conditions are unsuitable for clearing and/or grubbing, as determined
by the ENGINEER, the CONTRACTOR shall cease operations until permission
to resume operations is obtained from the ENGINEER.
C. Clearing shall consist of removing trees, undergrowth, and deadwood. Trees
shall be cut level with the adjacent ground surface. Grubbing shall consist of
removing stumps, roots, and surficial debris from the areas identified in this
section or as directed by the ENGINEER.
D. Clearing and/or grubbing activities shall be performed in a manner so as to
minimize disturbance to the surrounding areas.
E. All cleared and/or grubbed materials shall be reduced to mulch and stockpiled
as directed by the OWNER.
3.04 STRIPPING
A. Stripping shall be performed in areas identified in this section or as directed by
the ENGINEER. All sediment and erosion controls shall be in place before the
start of stripping. Stripping shall include all vegetation, organics, and other
deleterious materials as required by the ENGINEER. Stripping depth shall be
a minimum of 6 inches. However, overstripping shall be avoided.
B. If soil or weather conditions are unsuitable for stripping, as determined by the
ENGINEER, the CONTRACTOR shall cease stripping activities until
permission to resume work is obtained from the ENGINEER.
C. Equipment and methods of operation shall be selected by the CONTRACTOR
to minimize disturbance to the surrounding areas.
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D. All stripped material shall be stockpiled in the areas designated by the OWNER.
Stockpiled material shall be sloped and grassed as required in the
Specifications or as directed by the ENGINEER.
3.05 SURVEYING AND CONSTRUCTION TOLERANCES
A. The CONTRACTOR shall retain a Surveyor who shall be responsible for
providing survey control for the work. The areas to be cleared, grubbed, and/or
stripped shall be surveyed prior to performing the work for the purpose of
measurement and payment. All surveying shall be performed in accordance
with Section 02 21 00 of the Specifications.
3.06 PROTECTION OF WORK
A. The CONTRACTOR shall protect all prior work, including all materials and
related work of other sections.
B. In the event of damage, the CONTRACTOR shall immediately make all
necessary repairs and replacements necessary, as directed and approved by
the ENGINEER, at no additional cost to the OWNER.
[END OF SECTION]
Section 31 23 33: Trenching and Backfilling
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GC5770\31 23 33 Trenching and Backfilling.docx 31 22 33-1 December 2015
SECTION 31 23 33
TRENCHING AND BACKFILLING
PART 1 GENERAL
1.01 SCOPE
A. This section describes the requirements for trenching, backfilling, placing, and
compacting materials, and for performing other work as directed by the
ENGINEER.
1.02 RELATED SECTIONS AND PLANS
A. Section 02 21 00 - Surveying
B. Section 31 00 00 - Earthwork
C. Construction Quality Assurance (CQA) Plan
1.03 REFERENCES
A. Latest version of American Society of Testing and Materials (ASTM)
standards and other standards noted in this specification.
B. Latest version of Occupational Safety and Health Administration (OSHA)
Construction Standards.
1.04 SUBMITTALS
A. Submit a list of equipment for trenching and backfilling to the ENGINEER no
less than 15 calendar days prior to construction/installation.
B. If the embedment fill material is obtained from a source different than the
source of general fill, submit the source of the embedment fill, a
representative sample, and results of tests conducted on the embedment fill
samples in accordance with ASTM D 422 and ASTM D 2487.
1.05 CONSTRUCTION QUALITY ASSURANCE
A. The trenching and backfilling will be monitored by the CQA Consultant as
required in the CQA Plan.
B. The CONTRACTOR shall be aware of the activities required of the CQA
Consultant in the CQA Plan and shall account for these activities in the
construction schedule.
C. The CONTRACTOR shall correct all deficiencies and non-conformances
identified by the CQA Consultant at no additional cost to the OWNER.
Section 31 23 33: Trenching and Backfilling
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GC5770\31 23 33 Trenching and Backfilling.docx 31 22 33-2 December 2015
1.06 EXISTING CONDITIONS
A. In advance of trenching in an area, verify the accuracy of existing conditions
indicated on the Construction Drawings. Immediately notify the ENGINEER
in writing of deviations from the existing conditions indicated on the
Construction Drawings.
B. The approximate locations of all known underground utilities, above ground
utilities, and other structures, if any, are indicated on the Construction
Drawings.
PART 2 PRODUCTS
2.01 MATERIALS
A. Embedment material and backfill material shall be obtained from the
designated or other borrow area and shall meet the material requirements for
general fill as specified in Section 31 00 00.
2.02 EQUIPMENT
A. Provide, operate, and maintain all equipment necessary to perform the work
described in this section.
PART 3 EXECUTION
3.01 GENERAL
A. In areas of trenching and backfilling, maintain and protect existing
underground utilities, above ground utilities, and other structures, if any.
B. Do not damage or disturb, if possible, the existing work/systems that must
remain after trenching and backfilling is completed. If damaged or disturbed,
these systems shall be restored to the condition existing prior to the trenching
and backfilling operations.
3.02 TRENCHING
A. Use sheeting and bracing where and whenever necessary to maintain the
safety and stability of all slopes, trenches, and adjacent structures, if any.
Satisfy all applicable local, state, and federal requirements for slope and
trench sheeting and bracing, including requirements of the Occupational
Safety and Health Administration (OSHA) construction standards. Provide
required sheeting and bracing materials on site prior to start of trenching.
Adjust spacing and arrangement of sheeting and bracing as required by
conditions encountered. Remove sheeting and bracing as backfill
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progresses. Fill any voids left from sheeting or bracing withdrawal with
general fill or other approved materials.
B. Trench soils for pipes, culverts, storm water structures and/or to perform other
work to depths and minimum dimensions indicated on the Construction
Drawings. Fill material shall be placed and compacted with a hand tamper so
as not to damage the geosynthetics, structures, or displace the pipes.
C. Protect and maintain the trench bottom. Remove rock fragments or raveled
materials that collect on the trench bottom. Backfill excess excavation with
general fill or other approved materials. Excavate any soft subgrade soils
encountered at the trench bottom and backfill and compact general fill to
subgrade elevation.
D. Dewater trenches and excavations as needed. Perform dewatering in
accordance with Section 31 00 00.
E. Stockpile excess material from trenching in accordance with Section 31 00
00.
3.03 BACKFILLING
A. General:
1. do not backfill with saturated material;
2. do not backfill over wet or soft subgrade;
3. do not disturb or damage the installed pipes during backfilling; and
4. do not use heavy compaction equipment which exerts greater than 5
pounds per square inch ground pressure over pipes that are covered by
less than 12 inches of backfill material.
B. Placement of backfill material:
1. place the first lift of backfill material in a 12-inch loose lift. Place
subsequent lifts of trench backfill material in 8-inch ±1-inch loose lifts; and
2. compact each lift to 95 percent of the maximum standard Proctor dry unit
weight at a moisture content generally within ±3 percent of the optimum
moisture content as determined by ASTM D 698, or as directed by the
ENGINEER.
C. Placement of embedment fill:
1. place embedment fill in 7-inch ±1-inch thick loose lifts to the elevation of
the bottom of the pipe;
2. compact embedment fill with a minimum of 4 passes of a vibratory plate
compactor prior to placing pipe;
Section 31 23 33: Trenching and Backfilling
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3. place pipe on top of the compacted embedment fill;
4. for pipes 12 inches in diameter or less, place additional pipe embedment
fill on the sides and hand tamp the fill around the sides as needed to
insure intimate contact between the pipe and the embedment fill below the
spring line. Continue placing embedment fill until it is even with the top of
the pipe. Compact the embedment fill with a minimum of 4 passes of a
vibratory plate compactor. Do not compact on top of the pipe unless a
minimum of 12 inches of trench backfill separates the compactor from the
top of the pipe; and
5. for pipes greater than 12 inches in diameter, place embedment fill in 7-
inch ±1-inch thick loose lifts to the limits shown on the Construction
Drawings. Compact each lift with a minimum of 4 passes of a vibratory
plate compactor.
3.04 SURVEY CONTROL
A. Survey the limits and invert elevations of all pipes, culverts, and structures in
accordance with Section 02 21 00.
B. Survey the alignment and elevations of the top of all pipes at each change in
grade and every 50 feet between changes in grades in accordance with
Section 02 21 00.
3.05 TOLERANCES
A. Install pipes to within ±0.1 ft of the elevations and within 10 percent of the
slopes indicated on the Construction Drawings.
B. Excavate anchor trenches within 0 to +0.2 feet of the depth indicated on the
Construction Drawings.
[END OF SECTION]
Section 31 25 00: Sediment and Erosion Control
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GC5770\31 25 00 Sediment and Erosion Control.docx 31 25 00-1 December 2015
SECTION 31 25 00
SEDIMENT AND EROSION CONTROL
PART 1 GENERAL
1.01 SCOPE
A. Due to the nature of the work, site soils, and location with respect to active
disposal cells and operation, the CONTRACTOR shall implement strict
erosion and sedimentation control measures throughout the duration of the
work. A preventative approach to sedimentation control shall be implemented
by the CONTRACTOR in that multiple measures shall be installed and
maintained to prevent sedimentation and/or erosion of exposed soils. The
CONTRACTOR shall furnish all labor, materials, tools, and incidentals
required to install and maintain the temporary sediment and erosion control
measures and structures including, but not limited to, silt fence, straw bales,
check dams, temporary diversion berms, and sediment traps, throughout the
duration of the construction work. Such controls shall be implemented and
maintained throughout the construction until the stabilization of permanent
erosion control devices. The CONTRACTOR shall also be responsible for
removing the temporary sediment and erosion control measures and
structures after the construction work is completed.
B. The CONTRACTOR shall contain all storm water discharges within the
property boundary. No discharge shall be allowed off of property.
C. The CONTRACTOR shall protect all existing storm water structures and
ponds. Sediment deposits shall be removed and damaged vegetation shall
be repaired. The CONTRACTOR shall maintain all existing storm water
features including, but not limited to berms, swales, and culverts. Any
disturbed storm water features shall be repaired by the CONTRACTOR.
D. Regardless of any minimum requirements set forth in this section, it is the
CONTRACTOR’S sole responsibility to select, implement, and maintain
proper and fully adequate erosion and sediment controls at all times (24
hours a day on all days) throughout the duration of the project. Repair of any
damage and all restitution for liabilities resulting from inadequate erosion and
sediment control shall be at the CONTRACTOR’S expense.
1.02 RELATED SECTIONS AND PLANS
A. Section 02 21 00 - Surveying
B. Section 31 11 00 - Clearing, Grubbing and/or Stripping
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C. Section 31 00 00 - Earthwork
D. Construction Quality Assurance (CQA) Plan
1.03 REFERENCES
A. NCDENR Stormwater BMP Manual, May 2012.
1.04 COMPLIANCE WITH REGULATIONS
A. It is the sole responsibility of the CONTRACTOR to be completely familiar
and comply with all local, state, and federal regulations pertaining to the work
required in this section.
1.05 CONSTRUCTION QUALITY ASSURANCE
A. Sediment and erosion control activities shall be monitored as outlined in the
CQA Plan.
B. The CONTRACTOR shall be aware of the activities set forth in the CQA Plan
and shall account for these activities in the construction schedule.
C. The CONTRACTOR shall assist the CQA Consultant in every manner
necessary for the proper performance of activities set forth in the CQA Plan.
D. CQA testing or inspections does not relieve the CONTRACTOR of the
responsibility to construct all work in conformance with the Construction
Drawings and Specifications.
E. If quality control or quality assurance tests indicate work does not meet
specified requirements, the CONTRACTOR shall remove, replace, and retest
the work at no additional cost to the OWNER.
1.06 SUBMITTALS
A. The CONTRACTOR shall submit samples and manufacturer's product data
sheets and recommended methods of installation for the proposed silt fence
to the ENGINEER at least 14 days prior to starting installation. The
manufacturer's product data sheets shall provide documentation and
certification that the silt fence products meet or exceed the requirements
specified in Part 2.01 of this section.
PART 2 PRODUCTS
2.01 SILT FENCE
A. Furnish silt fence with either woven or nonwoven fabric. Silt fence shall:
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1. be woven fabric consisting of slit films of polypropylene treated with
ultraviolet light stabilizers or nonwoven fabric consisting of long chain
polymeric filaments or polyester yarns;
2. be inert to hydrocarbons and chemicals commonly found in soils;
3. be resistant to mildew, rot, insects, and rodent attack;
4. have fence post of minimum 2” x 2” lumber and with minimum length of 36
inches spaced a maximum distance of 6 ft along fabric; and
5. have minimum fabric width of 36 inches.
2.02 STRAW BALES
A. Furnish rectangular shaped bales of hay weighing at least 40 pounds per
bale. Straw bales shall be free of primary noxious weed seeds and shall be
staked in place.
2.03 VEGETATION
A. Vegetation shall be as specified in Section 31 31 19 of these Specifications.
PART 3 EXECUTION
3.01 INSTALLATION
A. Silt fence shall be installed in accordance with the manufacturer’s
recommendations as needed or as directed by the ENGINEER, prior to any
construction activities. Minimum fabric burial depth shall be 6 inches or as
recommended by the manufacturer, whichever is greater.
B. Temporary diversions shall be provided as needed to prevent run-on of storm
water from outside the limits of work from entering the work area. Temporary
diversions shall not result in erosion or sedimentation, or cause flooding
outside the limits of work. Temporary diversions intended for use longer than
30 days shall be established with vegetation in accordance with Section 31 31
19 of these Specifications.
C. The exterior slopes of road shoulders (if applicable) shall be grassed
immediately after final grading and shaping.
D. The CONTRACTOR shall use straw bales to contain sediment and water
from dewatering operations and promote infiltration. Accumulated sediment
shall be removed and stockpiled for reuse in an area designated by the
ENGINEER.
Section 31 25 00: Sediment and Erosion Control
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3.02 PROTECTION OF WORK
A. The CONTRACTOR shall protect all prior work, including materials and
related work of other sections.
B. In the event of damage, the CONTRACTOR shall immediately make all repairs and replacements necessary, as directed and approved by the
ENGINEER, at no additional cost to the OWNER.
[END OF SECTION]
Section 31 31 19: Vegetation
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SECTION 31 31 19
VEGETATION
PART 1 GENERAL
1.01 SCOPE
A. This section includes the requirements for sodding, seeding, liming, fertilizing,
and maintaining vegetation until established and accepted. Areas to be
vegetated include areas noted on the Construction Drawings and any other
areas as directed by the ENGINEER.
1.02 RELATED SECTIONS AND PLANS
A. Section 02 21 00 - Surveying
B. Section 31 00 00 - Earthwork
C. Construction Quality Assurance (CQA) Plan
1.03 SUBMITTALS
A. Submit the following to the ENGINEER not less than 30 calendar days prior to
use for review:
1. proposed type and source of sod and seed; and
2. Manufacturer's product data for commercial fertilizer and lime and the
recommended methods of application.
B. Submit a plan for handling and storage of materials to prevent damage by
moisture, heat, or exposure. Include all recommendations of Manufacturers
and Suppliers.
PART 2 PRODUCTS
2.01 MATERIALS
A. Sod shall be live, thriving, and meet the requirements of North Carolina
Department of Agriculture and Consumer Services.
B. Seeds shall be live seed and meet the requirements of North Carolina
Department of Agriculture and Consumer Services.
C. The seeds should have been harvested from the previous year’s crop.
D. All seed bags shall have a label attached stating the date of harvest, LOT
number, percent purity, percent germination, noxious weed certification, and
date of test.
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E. Use fertilizer that is dry or liquid commercial grade fertilizer uniform in
composition that meets the requirements of all State and Federal regulations
and standards of the Association of Agricultural Chemists. Deliver fertilizer to
the site in original, properly labeled, unopened, clean, containers each
showing the Manufacturer's guaranteed analysis conforming to applicable
fertilizer regulations and standards. Use fertilizer that is 16-4-8 or as modified
by the ENGINEER based on testing of the topsoil by the CONTRACTOR.
Apply fertilizer to all sodded areas.
F. Use lime that is agricultural ground limestone with a minimum total
neutralizing power of 90 percent. The lime shall have a gradation of at least
40 percent passing the U.S. Standard Number 100 sieve, and at least 95
percent passing the U.S. Standard Number 8 sieve.
PART 3 EXECUTION
3.01 PLANTING AND APPLICATION OF FERTILIZER
A. Do not commence vegetation until the ENGINEER reviews the results of soil
analyses.
3.02 NOTIFY THE ENGINEER 24 HOURS PRIOR TO LAYING SOD,
SEEDING, OR FERTILIZING.
A. The seed and fertilizer shall be placed by hydro seeding, or other method
approved by the ENGINEER.
B. The underlying soil layer should be graded to the lines and limits as indicated
on the Construction Drawings. The soil layer surface shall be scarified and
damp immediately prior to the seed or sod placement.
C. Repair all gullies, washes, or disturbed areas that develop subsequent to final
dressing of the prepared surface.
D. Seeded areas shall be watered after germination as necessary until the
vegetation is well established.
E. Apply fertilizer and lime to all vegetated areas unless otherwise indicated by
the ENGINEER.
F. Apply fertilizer and lime at the specified rates. If not applied hydraulically,
thoroughly rake the fertilizer and lime into the prepared surface to a minimum
depth of 2 inches.
G. Application rates:
1. Application rates for seeding shall be according to Manufacture/Supplier
recommendations or as directed by the ENGINEER.
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2. Application rates for fertilizer and lime in this section may be adjusted after
the results of the site soil test results performed by the CONTRACTOR
are available.
3. Base contract price on application rates for fertilizer and lime specified in
this section. Contract price will be adjusted for any variations either due to
decreasing or increasing the application rates.
H. For areas to be covered with seed or sod:
1. Apply fertilizer at a uniform rate of 1,200 pounds per acre or as otherwise
directed by the ENGINEER.
2. Apply agricultural lime at a rate of two tons per acre or as otherwise
directed by the ENGINEER.
3.03 MAINTENANCE
A. Maintain seeded and sodded areas immediately after placement until
vegetation is well established and exhibits a vigorous growing condition.
B. The CONTRACTOR shall supply and apply supplemental irrigation for the
maintenance period following the placement of the seed or sod. All seeded
and sodded areas should receive a minimum of 1½ inches of water per week
either by precipitation or supplemental irrigation.
C. Maintain the seeded and sodded areas in satisfactory condition.
Maintenance of the seeded and sodded areas includes repairing eroded
areas, revegetating, watering, and mowing (if applicable). A satisfactory
condition of a seeded or sodded area is defined as a 10,000 square feet
section of turf that has no bare spots larger than three square feet.
D. The inspection will be performed by the ENGINEER, who will determine
whether repair of sodded areas or revegetation is required.
3.04 ACCEPTANCE
A. The vegetated areas shall be accepted at the end of the warranty period if a
satisfactory condition as defined in this section exists.
3.05 WARRANTY PERIOD
A. Vegetated areas shall be subject to a warranty period of not less than 60 days
from the issuance of the ENGINEER’s final completion notice to the
CONTRACTOR for the Contract over 100 percent of the areas seeded and
sodded.
B. At the end of the warranty period, the ENGINEER will perform an inspection
upon written request by the CONTRACTOR. Vegetated areas not
demonstrating satisfactory condition of vegetation as outlined above, shall be
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repaired, resodded, and maintained to meet all requirements as specified
herein at the CONTRACTOR's expense. All unaccepted areas requiring
repair, replacement of sod and/or reseeding shall be subject to a 60 day
warranty period commencing at the completion of the reworking.
C. After all necessary corrective work has been completed, the ENGINEER will
certify in writing the final acceptance of the vegetated areas.
[END OF SECTION]
Section 31 37 00: Riprap
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GC5770\31 37 00 Riprap.docx 31 37 00-1 December 2015
SECTION 31 37 00
RIPRAP
PART 1 GENERAL
1.01 SCOPE
A. This section includes the requirements of riprap products and placement that
will need to be installed at the location of the storm water drainage structures.
1.02 RELATED SECTIONS AND PLANS
A. Section 33 49 00 - Storm Water Drainage Structures
B. Section 31 02 19.13 - Geotextiles
C. Construction Quality Assurance (CQA) Plan
1.03 SUBMITTALS
A. Submit the following to the ENGINEER for review no less than 30 calendar
days prior to riprap use.
1. source of the riprap; and
2. certification from the supplier that the riprap meets the material
requirements of this Section.
1.04 CONSTRUCTION QUALITY ASSURANCE
A. The placement of riprap will be monitored by the CQA Consultant as required
by the CQA Plan.
B. The CQA Consultant will perform material conformance testing as required by
the CQA Plan.
C. The CONTRACTOR shall be aware of the activities required of the CQA
Consultant by the CQA Plan and account for these activities in the
construction schedule.
D. The CONTRACTOR shall correct all deficiencies and non-conformances
identified by the CQA Consultant at no additional cost to the Owner.
PART 2 PRODUCTS
2.01 MATERIALS
A. Riprap shall consist of hard, durable, angular field or quarry stone.
B. Riprap shall conform to NCDOT Class 1 riprap Specifications.
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PART 3 EXECUTION
3.01 PLACEMENT
A. Place riprap to the thickness, elevations, and locations indicated on the
Construction Drawings.
B. Place riprap upon geotextile separator meeting requirements of Section 31 02
19.13 and over prepared layers as indicated on the Construction Drawings.
C. Carefully place riprap to avoid segregation or disturbance or damage of the
underlying material. Place the material in a manner to produce a well graded
mass of riprap with the minimum practicable percentage of voids. Distribute
the larger pieces throughout the entire mass such that the finished riprap is
free from objectionable pockets of small or large pieces.
D. Do not place riprap by dumping into chutes or by similar methods likely to
cause segregation of various sizes.
E. Do not place riprap in a manner that causes damage to an underlying
geotextile separator or geocomposite. Repair damaged geotextile as directed
by the ENGINEER and in accordance with Section 31 02 19.13.
3.02 SURVEY CONTROL
A. Survey the location of riprap placement in accordance with Section 02 21 00.
3.03 TOLERANCES
A. Place the riprap to the minimum thicknesses as indicated on the Construction
Drawings.
[END OF SECTION]
Section 32 92 19: Seeding
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SECTION 32 92 19
SEEDING
PART 1 GENERAL
1.01 SUMMARY
A. The CONTRACTOR shall furnish all labor, materials, and equipment required
to complete seeding and establish vegetation in disturbed areas at the Site in
accordance with this Section.
B. The seeding activities relating to erosion and sediment control vegetation shall
include, but not be limited to, the following:
1. determining herbicides, fertilizer, ratios, times of application, and
schedules;
2. seeding of sediment and erosion control vegetation;
3. applying fertilizer and soil amendments;
4. installing, maintaining, replacing, and removing mulch;
5. soil tests to determine the required soil additives for all stabilized areas;
and
6. mowing and other vegetation maintenance practices.
1.02 RELATED SECTIONS AND PLANS
A. Section 01 00 00 – General Requirements
B. Section 31 25 00 – Erosion and Sediment Control
C. Section 31 11 00 – Clearing, Grubbing, and Stripping
1.03 REFERENCES
A. Latest version of North Carolina Department of Environment and Natural
Resources Manual (NCDENR), Practice Standards and Specifications, Chapter
6.11 Permanent Seeding
B. Latest version of North Caroline Department of Transportation Standard
Specifications for Roads and Structures (NCDOT), Section 1060.
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1.04 SUBMITTALS
A. At least 30 calendar days prior to implementing permanent vegetative
stabilization activities, the CONTRACTOR shall provide the Construction
Manager with the following:
1. soil test results per NCDENR Chapter 6.11;
2. the seed mixture, quantity, and application rate proposed for use;
3. the mulch type and application rate proposed for use;
4. the fertilizer type and application rate proposed for use; and
5. the seed bed preparation process proposed for use.
1.05 PERFORMANCE REQUIREMENTS
A. Project work shall conform to erosion and sediment control measures
requirements of the NCDENR.
B. Before proceeding with seeding activities, the CONTRACTOR shall carefully
check and verify dimensions and quantities and shall immediately inform the
Construction Manager of any discrepancies between the Drawings and actual
conditions. No work shall be performed in an area where a discrepancy has
been identified until approval has been provided by the Construction Manager.
C. The CONTRACTOR shall be required to obtain all required permits, including
the Land Disturbance Permit, upon contract award.
1.06 SAFETY
A. The CONTRACTOR shall be familiar with, and shall at all times conform to, the
regulations promulgated by the Occupational Safety and Health Administration
(“OSHA”) and set forth in “General Industry Occupational Safety and Health
Standards”, 29 C.F.R. Part 1910, and “Safety and Health Regulations for
Construction,” 29 C.F.R. Part 1926, and other applicable state and local
standards and regulations.
B. The CONTRACTOR shall comply with all provisions of the OWNER’s safety
policies.
C. The CONTRACTOR shall perform work in a safe manner in accordance with
the accepted CONTRACTOR’s Health and Safety Plan (“CHASP”).
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PART 2 PRODUCTS
2.01 MATERIALS
A. Materials shall be checked and approved by the Construction Manager or his
designee before delivery to the Site and/or installation. Such approval shall not
relieve the CONTRACTOR of his obligations under the Construction
Documents.
B. Seeding materials under this Section 32 92 19 shall include but not be limited to
the following items:
1. Fertilizer. Fertilizer shall be commercially-prepared and granular. Fertilizer
shall be uniform in composition, dry, and free-flowing.
a. Fertilizer shall conform to all applicable state and federal
regulations.
b. Fertilizer for permanent seeding shall be of the specified organic
composition as determined by NCDOT 1060.
2. Limestone. Limestone shall be ground dolomitic limestone with 98-100
percent passing a 20 mesh sieve and 50 percent passing a 100 mesh
sieve.
3. Seed. Grass seed shall meet the requirements specified in the NCDENR
Manual. The CONTRACTOR shall use the seed mix requirements for
General Slope (3:1 or less) for the appropriate region, as outlined by the
NCDENR Manual.
4. Mulch. Oat or wheat straw shall be used. Straw shall be dry and free
from weeds, weed seeds, and foreign matter detrimental to plant life.
Mulch shall conform to NCDOT 1060-5.
PART 3 EXECUTION
3.01 GENERAL REQUIREMENTS
A. Preparation:
1. General. Rake the soil surface to remove all root clumps, stones, and
debris 1 inch or greater in size. True up all depressions and edges. Soil
in the area to be seeded shall be prepared in accordance NCDOT 1060.
2. Grading. Establish a smooth grade ready to receive seed. The finished
grade must conform to the grades and elevations as shown on the
Drawings.
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3. Topsoil. Topsoil shall be in place for areas to be permanently seeded.
B. Application:
1. General. Seeding shall conform to NCDOT 1060 and the Erosion and
Sediment Control Plan. Initial seeding shall consist of uniformly applying
seed, mulch, and water on prepared areas. Over-seeding shall consist of
applying seed, mulch, and water to areas previously seeded.
2. Lime: Apply lime uniformly at the rate of 2 tons per acre or as
recommended in the soil test report using approved application methods
listed in NCDOT 1060-3. After application, the soil shall be loosened to a
depth of 3 inches by disking, harrowing, or other approved method.
Washed and disturbed areas shall be final dressed prior to applying
fertilizer. Lime application is not required for areas to be temporarily
seeded for periods of less than 4 months.
3. Fertilizer. Incorporate fertilizer into the top 3 inches of soil by discing or
power rake.
a. For areas to be permanently seeded, apply fertilizer uniformly at the
rate of 30 pounds per 1,000 square feet.
b. For areas to be temporarily seeded, apply fertilizer uniformly at the
rate of 15 pounds per 1,000 square feet.
4. Seeding Time. Seed shall be sown during favorable weather conditions.
Seed shall not be sown when the ground is frozen or when air
temperatures are below freezing. Do not sow under windy conditions.
5. Seeding. Sow seed uniformly, dividing the selected rate in half and
sowing in cross directions using a mechanical spreader. Do not allow
seed to drift into adjacent planting beds.
6. Rolling. After machine sowing, lightly cover seed by harrowing or raking.
Compact lawn area seedbeds by rolling with a 200 pound hand roller.
7. Mulching. Mulching shall comply with the pertinent provisions NCDOT
1060-5
a. Apply mulch within 48 hours of sowing seed. Apply mulch of loose
straw uniformly at the rate of 2 tons per acre. Between October 16
and January 31, the application rate shall be increased to 3 tons per
acre. Mulch shall be anchored to the seeded surface by discing,
netting, or by other methods approved by the OWNER or
Construction Manager.
b. Areas to be temporarily seeded need be mulched only during the fall
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or during the summer when weather conditions are excessively hot
or dry.
8. Watering. Immediately after completion of mulching, apply water
thoroughly to mulch and seedbed with a fine mist spray. Water heavily
once per week during dry weather until a thick cover of grass is
established.
9. Hydroseeding. Hydroseeding may be used as an alternative application
method upon approval of the OWNER. The use of alternative soil
amendments and mulch will be considered provided the application rates
comply with the rates specified in this Section.
C. The CONTRACTOR shall provide silt fences as needed to prevent runoff from
seeded areas until vegetation has become established.
D. Upon completion of work, the CONTRACTOR shall remove from the Site cord,
wrappings, stakes, and extraneous materials. The CONTRACTOR shall
remove tools, equipment, and other materials, except those necessary for
maintenance. Litter developing by reason of the CONTRACTOR's
maintenance activities shall be removed as it accumulates.
E. The CONTRACTOR shall maintain areas until seed has germinated and
produced a thick stand of grass but for not less than one (1) year following
issuance of the notice of termination by NCDENR of the erosion and sediment
control plan for the Site.
F. During the maintenance period, the CONTRACTOR shall perform all mowing,
watering, repair of erosion areas, replacement of cover soil and topsoil,
cleaning of drainage ditches and drainage system components clogged by
eroded topsoil and cover soil, and reseeding until a thick stand of grass has
been produced as accepted by the Construction Manager and OWNER.
Maintenance shall also include visual inspection of the cover system
components for damage (e.g., penetrations of the soil cover or exposure of the
geosynthetic layer). Observed damage shall be temporarily covered with a tarp
or other impervious cover and notated within maintenance records maintained
by the CONTRACTOR. The CONTRACTOR shall report the damage to the
Construction Manager within one business day of being observed to initiate
protocols to evaluate and repair the damage, and submit notification to
NCDENR.
G. Mow areas intended for “groomed appearance” on a schedule during the
growing season and as required throughout the year to provide the desired
appearance for the particular species used for erosion control.
1. The range of turf species suggested for lawns in the three growing regions
of North Carolina vary as to optimum maintained height. The selected
species should be maintained at a height recommended by the seed
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producer. Do not cut too short and do not allow the turf to attain a height
that will cause the crop to decline or die. Consult individual seed
producers and/or packaging for recommended mowing heights.
2. Mow with a mulching mower to limit the amount of clippings removed, or
mow and blow in such a manner that clippings are not evident and not to
adversely affect the growing capacity and/or health of the existing
vegetation turf. It is important clippings are allowed to remain spread
throughout the lawn area, to the extent possible, so that they might aid in
building a more productive soil profile and root zone.
3. Mowing other stabilized areas to promote continued growth. Stabilized
areas that are not to achieve a “groomed” appearance are to be mowed to
recommended mowing heights for the particular species and as frequently
as recommended by the individual seed producer to foster erosion control
and ease of maintenance. In areas where it is desirable for woody native
volunteer vegetation to become established, the CONTRACTOR will pay
attention to mowing stakes or another indicator to protect desired woody
natives from the mowing operation
4. The CONTRACTOR shall cut the grass at least once, but not more than
twice per season, after a thick stand of grass is produced. The
CONTRACTOR shall coordinate grass cutting with the Construction
Manager or OWNER so that inspections can be conducted immediately
following cutting.
H. A satisfactory stand of vegetative cover shall be defined as a cover of living
plants, after true leaves are formed, of the required seed species designated for
use in which gaps larger than 25 square inches do not occur.
I. The CONTRACTOR shall make site observations monthly to check for the
presence of invasive species that could lead to unprotected soil and sediment
damage and, if found, treat them immediately with the appropriate cultural
practices and/or by the use of seasonally-appropriate and site appropriate
herbicides.
J. The CONTRACTOR shall commence post-construction maintenance within two
weeks of notification that maintenance is required. Maintenance will be
conducted to the satisfaction of the Construction Manager or OWNER.
3.02 ADJUSTMENT OF PRACTICES
A. If the planned measures do not result in effective control of erosion and
sediment runoff meeting the requirements of the General Permit for Discharges
of Stormwater from Construction Activities, the CONTRACTOR shall
immediately adjust his activities and/or institute additional measures so as to
eliminate erosion and sediment runoff at no additional cost to the OWNER.
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B. If the CONTRACTOR fails or refuses to comply promptly, the Construction
Manager may issue an order stopping all or part of the work until satisfactory
corrective action has been taken. No time lost due to stop orders shall be
made the subject of a claim for extension of time or for excess costs or
damages by the CONTRACTOR.
[END OF SECTION]
Section 33 42 13: Pipe Culverts
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SECTION 33 42 13
PIPE CULVERTS
PART 1 GENERAL
1.01 SUMMARY
A. This Section includes all materials, equipment, and labor necessary for the
installation of culverts and related appurtenances.
1.02 RELATED SECTIONS AND PLANS
A. Section 00 21 00 – Surveying
B. Section 31 25 00 – Sediment and Erosion Control
C. Section 31 23 33 – Trenching and Backfilling
D. Section 31 37 13 – Rip Rap
1.03 REFERENCES
A. Latest version of American Association of State Highway Transportation
Officials (AASHTO) Standards:
1. AASHTO M252 Standard Specification for Corrugated Polyethylene
Drainage Pipe
2. AASHTO M294 Standard Specification for Corrugated Polyethylene
Pipe, 300- to 1500-mm Diameter
B. Latest version of ASTM International (ASTM) Standard:
1. ASTM D2321 Standard Practice for Underground Installation of
Thermoplastic Pipe for Sewers and Other Gravity Flow
Applications.
2. ASTM D3350 Standard Specification for Polyethylene Plastics Pipe
and Fittings Materials.
3. ASTM D3212 Standard Specification for Joints for Drain and Sewer
Plastic Pipes Using Flexible Elastomeric Seals.
4. ASTM F405 Standard Specification for Corrugated Polyethylene (PE)
Pipe and Fittings.
5. ASTM F477 Standard Specification for Elastomeric Seals (Gaskets)
for Joining Plastic Pipe.
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6. ASTM F667 Standard Specification for 3 through 24 in. Corrugated
Polyethylene Pipe and Fittings.
7. ASTM F2306 Standard Specification for 12 to 60 in [300 to 1500 mm]
Annular Corrugated Profile Wall Polyethylene (PE) Pipe
and Fittings for Gravity Flow Storm Sewer and
Subsurface Drainage Applications.
1.04 SUBMITTALS
A. Submit the following to the ENGINEER for review at least 30 calendar days
prior to use:
1. culverts Manufacturer's product data and recommended methods of
storage, handling, and proposed installation;
2. shop drawings for culverts showing the layout and details of joints,
special connections, and fittings; and
3. Manufacturer's written certification that culverts and joint material meet
the material requirements of this Section.
B. Provide list of equipment, description of installation methods, and other
required information for installation of culverts.
1.05 CONSTRUCTION QUALITY ASSURANCE
A. The installation of storm water drainage structure and swale will be monitored
by the CQA Consultant as required by the CQA Plan.
B. The CQA Consultant will perform material conformance testing and installation
quality control testing during construction of drainage structure and swale as
required by the CQA Plan.
C. The CONTRACTOR shall be aware of the activities required of the CQA
Consultant by the CQA Plan and account for these activities in the construction
schedule.
D. The CONTRACTOR shall correct all deficiencies and non-conformances
identified by the CQA Consultant at no additional cost to the Owner.
PART 2 PRODUCTS
2.01 CULVERTS AND FITTINGS
A. Furnish ADS N-12 (water-tight) high density polyethylene (“HDPE”) corrugated
plastic pipe (CPP) and fittings or ENGINEER approved equivalent.
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2.02 CULVERT OUTLET AND INLET PROTECTION
A. Furnish riprap meeting the requirements of Section 31 37 00.
2.03 EQUIPMENT
A. Furnish all equipment necessary to perform the Work specified in this Section.
PART 3 EXECUTION
3.01 INSTALLATION
A. Install culverts as shown on the Construction Drawings.
B. Examine culverts and joint materials before installation for damage. Reject
damage materials. Install culverts in accordance with Manufacturer’s
installation recommendations and as approved by the ENGINEER.
C. Prior to culvert installation, complete trenching and place pipe embedment fill in
accordance with Section 31 23 33 unless otherwise shown on the Construction
Drawings.
D. Install CPP culverts to the lines and grades shown on the Construction
Drawings.
E. Install joints for CPP culverts in accordance with the Manufacturer's
recommendations.
F. After installation of the culverts, perform trench backfilling as specified in
Section 31 23 33.
G. Culvert inlet and outlet protection shall be placed as shown on the Construction
Drawings.
3.02 SURVEY CONTROL
A. Survey the final locations and invert elevations of the culverts in accordance
with Section 02 21 00.
3.03 TOLERANCE
A. Install culverts, and inlet structures within ±0.1 feet of the invert elevations
indicated on the Drawings and to provide positive drainage at all times.
[END OF SECTION]
Section 33 49 00: Storm Water Structures and Swales
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SECTION 33 49 00
STORM WATER STRUCTURES AND SWALES
PART 1 GENERAL
1.01 SCOPE
A. This section includes the requirements for products and installation of storm
water drainage structures and swales.
1.02 RELATED SECTIONS AND PLANS
A. Section 31 00 00 - Earthwork
B. Section 31 23 33 - Trenching and Backfilling
C. Section 31 05 16 - Granular Drainage Materials
D. Section 31 37 00 - Riprap
E. Construction Quality Assurance (CQA) Plan
1.03 REFERENCES
A. AASHTO M294 - Standard Specification for Corrugated Polyethylene Pipe,
300- to 900-mm (12- to 36-in.) Diameter.
B. Guidelines for Drainage Studies and Hydraulic Design, North Carolina Division
of Highways, March 1999
C. ASTM D 2412 - Test Method for Determination of External Loading
Characteristics of Plastic Pipe by Parallel-Plate Loading.
1.04 SUBMITTALS
A. Submit shop drawings for pre-cast concrete storm water drainage structures to
the ENGINEER for approval a minimum of 30 days prior to use.
B. The CONTRACTOR shall submit to the ENGINEER the Manufacturer’s
certification of compliance with these Specifications for all materials delivered
to the site and shall comply with the pipe Manufacturer’s recommendations for
handling, storing, and installing pipes and fittings.
C. Submit shop drawings for concrete headwall and thrust block to the ENGINEER
for approval a minimum of 30 days prior to construction.
1.05 CONSTRUCTION QUALITY ASSURANCE
A. The installation of storm water drainage structure and swale will be monitored
by the CQA Consultant as required by the CQA Plan.
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B. The CQA Consultant will perform material conformance testing and installation
quality control testing during construction of drainage structure and swale as
required by the CQA Plan.
C. The CONTRACTOR shall be aware of the activities required of the CQA
Consultant by the CQA Plan and account for these activities in the construction
schedule.
D. The CONTRACTOR shall correct all deficiencies and non-conformances
identified by the CQA Consultant at no additional cost to the Owner.
PART 2 PRODUCTS
2.01 MATERIALS
A. The concrete junction box shall conform to Guidelines for Drainage Studies and
Hydraulic Design (March 1999).
B. Furnish corrugated HDPE pipe with diameter as indicated on the Construction
Drawings and meeting the following requirements:
1. Pipe shall comply with AASHTO M294 Type “C” and shall be constructed
of new polyethylene compounds which meet the minimum cell classification
of 323410C or 333410B as defined and described in ASTM D 3550.
Compounds that have a higher cell classification in one or more properties
are acceptable provided the product requirements are met.
2. The minimum parallel plate stiffness values when tested in accordance with
ASTM 2412 shall be 30-psi (0.21-Mpa).
3. The pipe shall be homogeneous throughout and free of foreign inclusions
and visible defects.
C. Furnish HDPE pipe fittings, as needed, based on the CONTRACTOR’s shop
drawings that meet the following requirements:
1. Fittings shall not reduce or impair the overall integrity or function of the
pipeline.
2. Only fittings supplied or recommended by the manufacturer shall be used.
3. Fittings for corrugated HDPE pipe shall comply with material requirements
for the corrugated HDPE pipe.
4. Fittings shall be free of foreign inclusions and visible defects.
D. The concrete headwall shall conform to Index No. 250 of the Guidelines for
Drainage Studies and Hydraulic Design (March 1999).
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PART 3 PART 3 EXECUTION
3.01 PREPARATION
A. All excavation, shoring, and storm water control required for the construction of
drainage structures shall be performed in accordance with Section 31 00 00.
B. Excavation shall be to the required depth. Over-excavated areas shall be
backfilled with general fill material, properly compacted as specified in Sections
31 00 00 and Section 31 23 33.
3.02 INSTALLATION
A. Drainage Structures
1. Set drainage structures at the proper elevation with proper bearing on a
suitable foundation.
2. Pipe openings shall be neatly cut two inches larger than the outside
diameter of the pipe. Fill openings around pipe with non-shrink grout to
provide a smooth watertight joint between structure and pipe.
3. Opening for the upstream pipe shall be covered with a piece of plywood for
future use.
4. Cut pipe entering the structure to the correct length prior to installation.
Removal of excess pipe in structure after installation will not be acceptable.
5. All backfilling required for the installation of drainage structures shall be
performed in accordance with Section 31 23 33.
3.03 SURVEY CONTROL
A. Survey the location and elevation of all storm water drainage structures and the
lines, slopes, and grades in accordance with Section 02 21 00.
3.04 TOLERANCE
A. Install drainage swales and structures to within ±0.1 ft of elevations indicated
on the Construction Drawings or as directed by the ENGINEER.
[END OF SECTION]
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SECTION 34 71 00
ROAD CONSTRUCTION
PART 1 GENERAL
1.01 SCOPE
A. This section describes the requirements for constructing the roads as
indicated on the Construction Drawings.
1.02 RELATED SECTIONS AND PLANS
A. Section 02 21 00 - Surveying
B. Section 31 00 00 – Earthwork
C. Section 31 31 19 - Vegetation
D. Construction Quality Assurance (CQA) Plan
1.03 REFERENCES
A. Latest version of American Society of Testing and Materials (ASTM)
standards and other standards noted in this specification.
1.04 SUBMITTALS
A. At least 14 days prior to the start of road construction, the CONTRACTOR
shall provide for ENGINEER’s review the equipment and construction method
for placing and compacting the road materials.
B. For each source of the base material, submit the following to the ENGINEER for
review at least 21 calendar days prior to road construction:
1. source of the material;
2. test results conducted on three samples of the material which
demonstrates the material meets the requirements of the NCDOT
Specifications; and
3. a 50-pound representative sample of the proposed material.
1.05 CONSTRUCTION QUALITY ASSURANCE
A. The construction of the roads will be monitored by the ENGINEER as
required by the CQA Plan.
B. The CQA Consultant will perform material conformance testing and
installation quality control testing during road construction as required by the
CQA Plan.
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C. The CONTRACTOR shall be aware of the activities required by the CQA
Consultant in the CQA Plan and account for these activities in the
construction schedule.
D. The CONTRACTOR shall correct all deficiencies and non-conformances
identified by the CQA Consultant at no additional cost to the OWNER.
PART 2 PRODUCTS
2.01 MATERIALS
A. Furnish base material for the road and other roads meeting the requirements
of Subgrades, Bases, and Shoulders, Division 5, Section 520 of the NCDOT
Specifications. CONTRACTOR shall submit reports of testing and supplier
certifications showing that base material meets this section at least 21 days
before material is delivered to the site.
B. Furnish embankment material and prepared subbase materials for the roads
meeting the requirements of general fill material in Section 31 00 00 from
designated borrow area or other areas as directed by the ENGINEER.
2.02 EQUIPMENT
A. Furnish, operate, and maintain equipment necessary to construct roads in
accordance with the requirements of this section.
B. Use Caterpillar CS 563 or equivalent self-propelled vibratory compactor, as
approved by the ENGINEER, for compacting the subgrade, embankment, and
base materials.
PART 3 EXECUTION
3.01 ROADS
A. The roads shall be constructed to the thickness, grades, lines, and limits
indicated on the Construction Drawings.
B. The base materials shall be placed in two equal lifts and compacted to the
grades, lines, and limits indicated on the Construction Drawings and
compacted in accordance with this Section.
3.02 COMPACTION REQUIREMENTS AND TEST FREQUENCIES
A. Embankment materials for roads shall be compacted to 95 percent of
maximum dry density determined by ASTM D 698. Construction quality
control tests will be performed by the CQA Consultant at a minimum
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frequency of one test for every 200 linear feet per lift or as directed by the
ENGINEER.
B. Prepared subbase for roads shall be compacted to 98 percent of maximum
dry density determined by ASTM D 698. Construction quality control tests will
be performed by the CQA Consultant at a minimum frequency of one test for
every 200 linear feet per lift or as directed by the ENGINEER.
C. Base course materials for roads shall be compacted to 95 percent of
maximum dry density determined by ASTM D 698 or as directed by the
ENGINEER. Construction quality control tests will be performed by the CQA
Consultant at a minimum frequency of one test for every 200 linear feet per lift
or as directed by the ENGINEER.
3.03 SURVEY CONTROL
A. Survey the grades, lines, and limits of the roads construction in accordance
with Section 02 21 00 to verify compliance with the Construction Drawings.
3.04 TOLERANCES
A. Place and compact embankment materials and base materials to ± 0.1 ft of
the elevations indicated on the Construction Drawings.
B. Construct the roads to within ±0.1 ft of the final grades and slopes indicated
on the Construction Drawings.
[END OF SECTION]