Attachment A-Bunker Renovation Specs.pdf

SPECIFICATIONS

CHERAW STATE PARK GOLF COURSE RENOVATION

1. BUNKER RENOVATION MATERIALS

1.1. Contractor Provided Golf Course Drain Pipe and Drain Inlets - As manufactured by

Advanced Drainage System, Inc.

1.2. Pea Gravel(3/8” washed) – As manufactured by Vulcan Materials Company and approved by a Turf Soils Lab

1.3. Bunker Sand (G-Angle from Marston, NC) – As manufactured by Golf Agronomics and approved by Turf Soils Lab

1.4. Contractor Provided Sod for Renovation and Repair work – Turf Connections

1.5. Bunker Liner ST410 Polymer

INSPECTION AND ACCEPTANCE

All material of whatever nature used in the reconstruction of the bunkers shall be subject to inspection for workmanship, quality, flow grades, and satisfactory demonstration of flow into all inlets and through all pipes with no damage at exit point before approval by the OWNER or AGENT. All materials shall be subject to rejection for failure to conform to any specification requirements. OWNER or AGENT shall plainly mark rejected material and the Contractor shall replace rejected material with material that meets the requirements of these specifications, and remove rejected material immediately from the work site.

2. SCOPE OF WORK

Work to be performed by Contractor at Cheraw State Park Golf Course will be the renovation of all bunker cavities on holes #5. #6, and #7 including, but not limited to the following:

2.1 BUNKER RENOVATION/SAND REPLACEMENT

The work consists of furnishing all equipment and materials and performing all work in connection with the removal and dispose of existing sand, salvaging of the existing sub-surface drainage pipe, reconstitution of bunker cavity to ensure no slopes are greater than 35 degrees, (less than or equal to the soil lab’s reported angle of repose of said bunker sand) installation of salvaged drainage pipe and fittings, installation of approved pea gravel, installation of lining material, installation of approved bunker sand to a compacted depth and finished grading and soding of all disturbed areas outside of bunker cavity.

2.2 Time frame for work completion is two months, project must be completed by August 16, 2021..

2.3 Contractor will work with OWNER/AGENT on work decisions. The work consists of one hole at a time. After all required bunkers are completed on one hole, work will progress to the next required hole.

3. AREA OF DISTURBANCE

All excavation areas shall be marked out in advance of excavation by OWNER or AGENT.

All sod within the delineated area will be removed and stockpiled in the event OWNER or AGENT elects to salvage the disturbed sod. If OWNER or AGENT elects not to salvage the sod Contractor will be required to dispose the unwanted sod per the specifications.

4. EXCAVATION OF EXISTING SAND

Prior to sand excavation, Contractor will salvage all existing drainage pipe and associated fittings. All sand and drainage materials shall be excavated and buried in the same bunker cavity and resulting excavated native soil will be stocked piled and used in the reconstitution of the bunker edges and slopes to a maximum of 35 degrees. Contractor will perform the drainage pipe/fittings salvaging and excavation and burying sand process in a manner to minimize equipment damage to the bunker complex and surrounding area. Any damage resulting from the salvaging of drainage materials or excavation/burying of sand will be repaired by Contractor to the approval of OWNER or AGENT.

5. DEWATERING

The Contractor shall remove all water from any source that accumulates during the excavation process and prior to the installation of specified drainage pipe. The embedment or pipe shall not be installed in water.

6. BUNKER CAVITY PREPARATION

Remove all sand, gravel and loose material to a compacted base. Sand bunker edges will be marked for trimming by OWNER or AGENT. The cavity edges shall be excavated vertically to a depth of eight (8”) inches. All bunker slopes will not exceed 35 degrees and will be check by a digital level to the satisfaction of OWNER or AGENT and Contractor will not be allowed to reconstruct any slopes in excess of 35 degrees. Where soil material prevents proper foundation preparation at the proposed elevation, the Contractor shall deepen excavation to level where a proper foundation can be prepared. Any materials removed shall be replaced with acceptable fill until stable at proposed grade. Sand limits will be painted in the field by OWNER or AGENT. In general it is OWNER or AGENT’s intent to maintain the existing sand lines, however in a few cases the sand lines will be modified by OWNER or AGENT to aid in the establishment of an acceptable slope.

7. DRAINAGE INSTALLATION

The entire foundation area in the bottom of all trench excavation and bunker cavity shall be smooth, firm, stable, and at uniform density and completed immediately prior to the placing of pipe or materials. Drainage of sand bunkers shall be accommodated by a drainage trench or multiple trenches connecting to each other, each trench measuring eight (8”) inches wide and twelve (12”) inches deep connecting into an acceptable and functional outfall pipe. Contractor is responsible for ensuring outfall pipe exiting the bunker cavity is not restricted and functioning properly to allow the bunker cavity to drain.

The locations of trenches will be as determined and subsequently painted out in the cavity by OWNER or AGENT. Each sand bunker is to be drained with drainage trenches in a herringbone pattern with no distance between trenches or un-drained area in excess of twenty feet, unless approved by OWNER or AGENT. The top of the pipe shall be set no higher than two (2”) inches below the top surface of the trench, and centered within the eight (8”) inch width of the trench. Each drainage trench shall slope a minimum of one-half percent (.5%) and shall terminate to the low point (or points) of the sand bunker where drainage will be collected and exit via the outfall pipe. Drainage from the bunker floor shall continue downgrade at a greater depth, if necessary, to the edge of the sand bunker where OWNER or AGENT has designated the drainage exiting the sand bunker.

The minimum rate of fall shall not be less than one-half percent (.5%) at any point within the drainage trenches. At the edge of the sand bunker where drainage exits, the perforated pipe shall connect to the existing outfall pipe. All areas of the sand bunkers are to be built with adequate drainage. No water will be permitted to stand in any portion of any bunker. This is to be accomplished by sub-grades draining to the herring-bone drainage system and exiting the bunker via the “outfall” connection point.

Prior to placement of the pea gravel blanket Contractor will provide OWNER or AGENT with a record drawing (As-built) of the installed drainage showing the percentages of fall. In addition to the record drawing Contractor will provide to OWNER or AGENT digital photos, on CD Media, showing the complete drainage system. CONTRACTOR WILL NOT BE

GRANTED APPROVAL TO INSTALL THE GRAVEL LAYER UNTIL AS-BUILT

DOCUMENTS HAVE BEEN REVIEWED AND APPROVED BY OWNER OR

AGENT. OWNER or AGENT will visually inspect all drainage installation, with written sign-off required before Contractor is authorized to install the pea gravel layer in bunker cavity.

Installation of new drainage lines may not require flush-out lines. However, if needed and determined by OWNER or AGENT, a flush-out line may be required for some sand bunkers.

In general, flush-out lines shall extend from the top side of the main drainage line of the sand bunker and terminate to the point where it will connects to a riser and trimmed and finished as specified by OWNER or AGENT. Single flush outs will be contained in a 6” diameter irrigation valve box. In instances where two flush outs are next to each other, the risers will be contained in a single 10” irrigation diameter valve box.

8. BUNKER LINER INSTALLATION

Contractor will not be allowed to deviate from the specifications and must not cause any portion of the product warranty to be voided or disallowed due to construction means and methods utilized by the Contractor.

8.1. BUNKER CAVITY PREPERATION

The product must be installed in an approved bunker cavity. The area to be covered with the specified liner shall be water settled and mechanically compacted with a hand operated compacting machine to a minimum dry density of ninety-five percent (95%). Absolutely no loose soil shall remain in the bunker cavity prior to liner placement. No liner material will be placed in bunker until OWNER or AGENT has approved the bunker shape, depth and compaction of the bunker cavity.

8.2. GRAVEL LAYER BLANKET

A layer of approved pea gravel (3/16”-1/4”) (4.5mm-6mm) shall be placed over the entire floor of the bunker at a depth of 2” (51mm) deep. This gravel shall be brought up to the edge of the bunker. Contractor will not be allowed to use any machines of any type to spread the gravel within the bunker cavity. Gravel must be spread by hand to ensure no damage occurs to the prepared cavity or bunker edges. Contractor must protect the vertical bunker edges at all times when dumping gravel along the bunker edges. The gravel selected will be sent by the Contractor approved lab for testing of the sand and gravel to ensure both materials meet the minimum “bridging” standard. This common standard is based on engineering principles that rely on the largest 15% of the sand particles "bridging" with the smallest 15% of the gravel particles. The gravel must be placed evenly and raked smooth.

Prior to placement of the pea gravel blanket Contractor will provide OWNER or AGENT with a record drawing (As-built) of the installed drainage showing the percentages of fall.

In addition to the record drawing Contractor will provide to OWNER or AGENT digital photos, on CD Media, showing the complete drainage system. CONTRACTOR WILL

NOT BE GRANTED APPROVAL TO INSTALL THE GRAVEL LAYER UNTIL

AS-BUILT DOCUMENTS HAVE BEEN REVIEWED AND APPROVED BY

OWNER OR AGENT.

8.3. ST410 POLYMER BINDER APPLICATION

ST410 POLYMER shall be sprayed by a certified and trained installer. Using proper pressure spray equipment, a uniform layer of ST410 POLYMER shall be applied to the gravel in the bunker at a rate 1 gallon of ST410 POLYMER per 30-35 square feet. The gravel must be dry (less than 15% as tested by the certified installer) at application time.

The treated bunker shall be allowed to cure for approximately 24 hours prior to sand installation. NOTE: ST410 POLYMER will penetrate approximately ½ - 1” (12mm - 25mm) depth of the gravel. A sturdy pliable layer of glued gravel will be the result.

8.4. INSPECTION AND QUALITY CONTROL

After 12-24 hours, the initial ST410 POLYMER application will have cured. Contractor will walk and inspect every square foot (meter) of each bunker at the end of the curing process. Any areas not to have received the specified rate of polymer will be marked with turf paint and re-sprayed prior to calling for a final inspection by OWNER or AGENT.

Improper application or omitting the inspection process and follow up polymer application will leave areas weak and the pea gravel loose. It is installer’s responsibility to inspect and maintain the highest standards on when installing the product.

9. RE-SODING OF DISTRUBED AREAS

All sand bunker banks and slopes leading away from edges that have been damaged during the bunker work shall be sodded as directed by OWNER or AGENT. If slopes are greater than 3:1, Contractor shall use wooden stakes to hold the sod in place until established.

Wooden stakes must be of sufficient length to provide firm bearing.

9.1. SURFACE PREPERATION

All surfaces within the areas of disturbance to be re-sodded, which are slicked or glazed shall be scarified, amended and smoothed by floating or hand raking prior to planting. All areas to be sodded shall be floated in two directions to eliminate water holding depressions and pockets. All lumps and soil clods shall be eliminated.

9.2. SOD QUALITY

Sod will be cut in a uniform thickness width and length. Sod shall be delivered to the job site within twenty-four hours after being harvested. Any sod permitted to dry out or rot maybe rejected if, in the judgment of OWNER or AGENT, its survival after placement is doubtful, and shall be replaced at the sole cost of the Contractor.

9.3. INSTALLATION PROCEEDURES

Sod shall be placed by hand with close joints and no overlapping. All spaces between sections of sod, openings at angles, and similar gaps shall be plugged with sod. After laying, the sod shall be thoroughly watered and then tamped with an approved sod tamper or rolled sufficiently to incorporate the sod with the sod bed and insure tight joints between the sections of strips. Rolling shall not be done to the extent that it causes excessive compaction. Any voids, openings, or crevices before and after tamping or rolling shall be filled with topsoil. Upon completion of the above work, the surface of the sodded area shall coincide with the finish grade, and shall be flush with other grassed areas.

9.4. PROTECTION OF SOD PRIOR TO HANDOVER

It will be the responsibility of the Contractor to repair any damage, to newly sodded and established grass areas, at the sole cost to the Contractor until the work area has been turned over to OWNER or AGENT.

Following the sodding operations within an area of disturbance and after the planted area(s) has been accepted by OWNER or AGENT, the maintenance and watering of these areas will be the responsibility of OWNER or AGENT.

The Contractor accepts responsibility for repairing any damage caused by drainage problems, irrigation breaks and run-off, as result to the construction means and methods of the Contractor until the area has been accepted by OWNER or AGENT. Contractor will be required to repair damaged areas so the repaired area(s) match the surrounding turf conditions in terms of both plant population and quality of turf. Contractor may be required to install sod within the damaged areas.

If, after the third mowing by OWNER or AGENT problems arise or are perceived, in any grassed areas, which are related to construction methods used on the project, the Contractor is responsible for repair of these areas.

All areas disturbed as a result of construction works shall be restored to their original condition or to the desired new appearance as directed by OWNER or AGENT.

9.5. PROTECTION OF SOD PRIOR TO HANDOVER

Each bunkers will be ringed in Cavalier Zoysiagrass approximately two and half (2.5’) feet.

The Zoysiagrass will be rolled over the edge of the bunker approximately four (4”) inches to almost touch the gravel layer. Areas for zoysiagrass will be marked by owner or architect prior to any grassing.

10. SAND PLACEMENT

After entire bunker is lined using the above procedures, sodding has been completed and written approval given, the Contractor will clean the cavity with a hand blower to remove all foreign debris. Absolutely no loose soil shall remain in the bunker cavity prior to sand placement. NO SAND WILL BE PLACED IN BUNKER UNTIL GOLF

SUPERINTENDENT HAS APPROVED IN WRITING THE SOD, BUNKER LINING

INSTALATION AND REMOVAL OF ALL DEBRIS.

After approval, the sand shall be spread evenly throughout at a compacted depth of four (4”) inches on slopes, six (6”) inches on the bottom of the cavity. Contractor will spread the sand against the bunker edges upon completing the installation of the sand in the specific bunker. Contractor will not be allowed to use any machines of any type to spread the sand within the bunker cavity. Sand must be spread by hand to ensure no damage occurs to the prepared cavity or bunker edges. Contractor must protect the vertical bunker edges at all times when dumping sand along the bunker edges. After spreading, all sand shall be water settled and compacted with a hand operated compaction machine. If any sand bunker has less than four (4) inches of sand, the Contractor shall be responsible for installing additional sand to meet specifications on sand depth.

The Contractor is responsible for controlling and removing any vegetative growth or contamination within sand bunkers during construction.

11. MATERIAL TESTING

Proposed bunker sands shall be evaluated for textural and particle size distribution, infiltration/percolation, shape, color, and resistance to fried egg lies simulating the conditions on a bunker’s slope and base. The textural and particle size distribution and infiltration rate analysis shall be conducted in the same manner required of proposed root zone materials.

Sand for the bunkers should be an unbleached silica sand of a consistency approved by the Project Agronomist’s approved testing laboratory and conforming generally to the following sieve and particle size (U.S. sieve mesh) analysis.

BUNKER SAND - SIEVE ANALYSIS

Particle Diameter in mm.

L6mesh 1.19 20 mesh .84 30 mesh .59 40 mesh .42

50 mesh .29 70 mesh .21 100 mesh .15 140 mesh .10 (3.9 1%) percent retain (5.22%) percent retain (14.59%) percent retain (26.45%) percent retain (32.50%) percent retain (14.12%) percent retain (2.86%) percent retain (.36%) percent retain

BUNKER SAND- PARTICLE SIZE ANALYSIS

USDA (mm) % .05 to 2.00 97.9 .002to.05 1.5 <.002 00.0 >2.00 00.6

NOTE: Sphericity of sand shall be sub-angular to angular

A penetrometer shall be used to evaluate the proposed bunker sand’s resistance to golf ball burying (“fried egg lie”). The selected bunker sand should have a textural/particle size distribution that would not create a layer that is a significant impediment to air/water permeability. The bunker sand should have a minimum test result of 2.6 kglcm2.

The testing laboratory’s report shall include the tested material’s resistance to fried egg lies, drainage, color, shape, and likelihood of causing a layer on the surface of a green that is capable of impeding air permeability and water penetration.

Bunker sand samples are to be sent to one of the following approved laboratories for testing:

Thomas Turf Services, Inc. New Mix Lab, LLC Attn: Mr. Jim Thomas Attn: Mr. Bob Oppold 2151 Harvey Mitchell Parkway, Suite 302 1530 East Kansas City Road, Suite 110 College Station, TX 77840 Olathe, KS 66061 Tel: 979-764-2050 Tel: 913-829-8873 Fax: 979-764-2152 Fax: 913-829-4013

The results of the bunker sand testing should be made available for the Designer and the Project Agronomist to review.