Addendum _1.pdf
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- Attached to
- McDuffie Place STEM Center Renovations
- Solicitation number
- PE-69710-NONST-2026-000000005
- Issued by
- Miller County, Georgia
About this file
This Addendum #1 document pertains to the McDuffie Place STEM Center Renovations project administered by the McDuffie County School District in Thomson, Georgia, with 2KM Architects serving as the architect of record. The project scope includes converting two existing bedrooms to ADA-compliant toilet rooms, converting two existing toilet rooms with showers into storage and janitor storage, developing a storage room in the existing kitchen area, installing new ADA-accessible handicap parking and building access/egress, upgrading architectural finishes (flooring, wall base, lighting, painting, and door hardware), raising the deck level in the screened porch with new stairs and landing, and constructing a new 36-foot open pavilion structure as an add alternate. The pre-bid conference was held on November 21, 2025, at the McDuffie County School District offices at 716 N. Lee Street, Thomson, Georgia. The deadline for submitting questions was November 26, 2025, at 3:00 PM, with responses provided by December 4, 2025, at 4:00 PM. Sealed bid packages are due December 15, 2025, at 10:00 AM at the McDuffie County Board of Education office. The project construction timeline is 120 days, with the building to remain unoccupied during construction.
The addendum clarifies specifications and drawings, including adding ASI American Specialties as an approved manufacturer under Division 10 Specialties, replacing civil drawing Sheet 4 for E, S & PC Notes and Details (dated 11/24/2025), and clarifying architectural note 4.401 regarding repointing and sealing masonry mortar joints. Two allowances are included in the base bid: Allowance No. 1 for Digital Drawing Files (CAD & BIM) at $150.00 per discipline at the contractor's discretion, and Allowance No. 2 for Unforeseen Conditions in the amount of $20,000.00. Overhead and profit must be included in the base bid for allowances. The project is being driven by Corps of Engineers requirements to achieve ADA compliance, and the existing septic tank is adequate for new low-flow plumbing fixtures. The facility is a masonry and wood structure originally built in the 1960s by the Thomson High FFA club, and VCT flooring replacement has been completed, indicating asbestos should not be present. All contractors, subcontractors, and workers are required to carry valid government-issued photo identification on-site and maintain proper behavior, language, and attire.
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24-09.01 McDuffie Place STEM Center ADDENDUM # 1
MP Z:\Active_Projects\2024 Projects\24-09 MCSD\24-09.01 McDuffie Place STEM Center\ADMINISTRATION\(BD) Bid Documents\4 - Addenda\#01\Backup\Addendum #1.doc
ADDENDUM #1
Part 1 – Specifications:
1.101 Reference Bid Requirements, Invitation to Bid, fourth paragraph, Pre-Bid Conference.
A. The following are made a part of the Contract Documents:
1. See attached “Pre-bid Conference Agenda.”
2. See attached “Sign-in Log” for attendance at Pre-Bid Conference.
3. See attached “Meeting Notes” from Pre-Bid Conference.
1.104 Reference Division 10, Specialties:
A. ADD the following items to Part 2, Item 2.1:
1. “ASI American Specialties” as an approved manufacturer.
Part 2 – Drawings:
1.201 Reference Civil Drawings:
A. REPLACE the following drawing having an issue date of 11/24/2025 and a revision listed as Revised Permanent Cover Species:
1. Sheet 4 – E, S & PC Notes and Details.
1.202 Reference Architectural Drawings:
A. CLARIFY the following on A2.1 – Exterior Elevations:
1. Note 4.401 to read “Repoint and seal open masonry mortar joints. Match color, texture, and mortar strength. Clean after repointing and sealing. Applies to entire façade.
Part 3 – Project Clarifications:
N/A
END OF ADDENDUM #1
SIGNED BY:
Robert L. Mauldin, NCARB, AIA Principal Architect, GA-RA-005958
Enclosed: Pre Bid Conference Agenda Pre Bid Sign in Sheet Pre Bid Meeting Notes Sheet 4 – E,S & PC Notes & Details
DATE: November 24, 2025
PROJECT: McDuffie Place STEM Center Renovations 6440 Lincolnton Highway Thomson, GA 30824
2KM PROJECT NUMBER: 24-09.01
MCSD PROJECT NUMBER: 25-001
2KM Architects, Inc.
529 Greene Street
Augusta, GA 30901
ph. 706.736-3333
fx. 706.736-7100
PRE-BID CONFERENCE AGENDA
MCDUFFIE COUNTY SCHOOL DISTRICT
MCDUFFIE PLACE STEM CENTER RENOVATIONS
2KM# 24-09.01; MCSD# 25-001
Date: 11/21/2025 Location: McDuffie County School District
716 N. Lee Street, Thomson, GA 30824 Time: 10:00 AM
Z:\Active_Projects\2024 Projects\24-09 MCSD\24-09.01 McDuffie Place STEM Center\ADMINISTRATION\(BD) Bid Documents\3 - Pre-Bid\Pre-Bid Agenda.doc
1. Sign-in:
a. Sign and provide complete contact information.
b. Request all parties sign-in with Full Name, Title, Company Name, Phone Number, Fax
Number and E-mail.
2. Introductions:
a. A/E and Owner.
b. Facility Representatives.
3. General Project Overview:
a. Building & use.
1) Convert (2) existing bedrooms to ADA Toilet Rooms.
2) Convert (2) existing toilet rooms with showers into storage and janitor storage.
3) Develop storage room in existing kitchen area.
4) Install new ADA Handicap parking & building access & egress.
5) Construct new free-standing covered open pavilion (Add Alternate #1).
6) Upgrade Architectural finishes:
a) Flooring and wall base.
b) Lighting.
c) Painting.
d) Door Hardware.
7) Raise deck level in screened porch & develop new stairs & landing.
b. Schedule:
1) Cut-off date for prior approvals and questions is November 26, 2025 by 3:00
PM.
2) Answers to questions will be returned via email by Thursday, December 4, 2026 at 4:00 PM.
3) Bid date: December 15, 2025 @ 10:00 AM, completed and sealed bid packages are to be sent to McDuffie Co. BOE office at 716 N. Lee Street, Thomson, GA
30824.
4) Construction Days: 120.
c. Review unique conditions and constraints of the project, site, and specifications:
1) This will be an unoccupied building and site.
a) Construction paths to be defined by Owner/Contractor.
b) Protect public from work hazards.
c) Provide temporary barriers and protection for material storage/laydown areas and areas of work.
2) Conduct on Site:
a) Identification: all workers to have a valid Government issued Photo I.D.
at all times.
b) Proper behaviour/language & Attire is required from all suppliers, subcontractors and general contractor’s workmen.
Z:\Active_Projects\2024 Projects\24-09 MCSD\24-09.01 McDuffie Place STEM Center\ADMINISTRATION\(BD) Bid Documents\3 - Pre-Bid\Pre-Bid Agenda.doc
4. Allowances:
The following Allowances shall be included in the Base Bid. Work shall be performed and approved by the Architect and Owner based on unit prices; time & materials; or lump sum proposals with detailed itemized pricing for the work to be performed. The Allowances are scheduled as follows:
a. ALLOWANCE NO. 1: Digital Drawing Files (CAD & BIM). There will be a service fee of $150.00 per discipline (per building as applicable) for the A/E team to modify & issue digital files for use in submittals. This is at the Contractor’s discretion – if no electronic files will be requested, this allowance amount will be $0.00.
b. ALLOWANCE NO. 2: Unforeseen Conditions
Allowance Amount: $ 20,000.00
5. Add Alternates:
State in proposal the amount to be added or deducted from the Base Bid for each of the Alternates described below. Upon execution of the Contract, implement work and modify work as established under various Alternates as accepted or rejected by the Owner. Clarifications of
Alternates shall be as follows:
a. ADD ALTERNATE #1:
Install new 36’-0” open pavilion structure on the west side of the property per
A4.1.
6. Addendum #1:
a. Clarifications.
b. Pre-Bid Agenda and Sign-In Sheet.
7. Open for questions.
2KM Architects, Inc. 529 Greene Street Phone: 706-736-3333 1 Email: mail@2kmarchitects.com Augusta, Georgia 30901
Z:\Active_Projects\2024 Projects\24-09 MCSD\24-09.01 McDuffie Place STEM Center\ADMINISTRATION\(BD) Bid Documents\3 - Pre-Bid\24-09.01 Pre-Bid Meeting Minutes.docx
Project Name: McDuffie Place STEM Center Renovations Project No.: 2KM# 24-09.01
MCSD# 25-001
Meeting Location: McDuffie County School District
716 N. Lee Street, Thomson, GA 30824 Date: November 21, 2025
Purpose: Pre-Bid Conference Time: 10:00 AM
ATTENDEES
NAME
FIRM PHONE
See Sign-in Log See Attached.
ITEM DISCUSSION COMMENT
A. Reviewed Agenda in detail (See attached Agenda)
1. Neal Tam, McDuffie County School District, introduced Owner personnel.
2. Rob Mauldin and Megan Poston, 2KM Architects, were introduced as A/E Team.
3. All parties signed in.
4. Architect of Record: 2KM Architects, Inc., Robert Mauldin, Principal Architect.
5. R. Mauldin outlined the building scope of work:
a. Building and Use:
1) Convert (2) existing bedrooms to ADA Toilet Rooms.
2) Convert (2) existing toilet rooms with showers into storage and janitor storage.
3) Develop storage room in existing kitchen area.
4) Install new ADA Handicap parking & building access & egress.
5) Construct new free-standing covered open pavilion (Add Alternate #1).
6) Upgrade Architectural finishes:
a) Flooring and wall base.
b) Lighting.
c) Painting.
d) Doors and Hardware.
7) Raise deck level in screened porch to finish floor level & develop new screened door, stairs, landing & concrete sidewalk.
B. Schedule:
1. Bid date December 15, 2025, at 10:00 AM.
2. Bid date: December 15, 2025 @ 10:00 AM, completed and sealed bid packages are to be sent to McDuffie Co. BOE office at 716 N. Lee Street, Thomson, GA 30824.
3. Construction Days: 120 days.
4. Contractors to read Bid Requirements very carefully and submit all required documents per the MCSD Bid Submittal Process.
5. All prior approvals and questions must be submitted prior to Wednesday, November 26, 2025 by 3:00 PM.
2. Include Project Name
& Number on sealed bid package.
3. Add Alternate may increase days, if taken.
C.
Jobsite:
1. This will be an unoccupied building and site.
a. Construction paths to be defined by Owner/Contractor.
b. Protect public from work hazards.
c. Provide temporary barriers and protection for material storage/laydown areas and areas of work.
PRE-BID MEETING NOTES
mailto:mail@2kmarchitects.com
2KM Architects, Inc. 529 Greene Street Phone: 706-736-3333 2 Email: mail@2kmarchitects.com Augusta, Georgia 30901
Z:\Active_Projects\2024 Projects\24-09 MCSD\24-09.01 McDuffie Place STEM Center\ADMINISTRATION\(BD) Bid Documents\3 - Pre-Bid\24-09.01 Pre-Bid Meeting Minutes.docx
D. Site tour was conducted with contractors in attendance.
E. Miscellaneous Discussion:
1. The building was built by the Thomson High FFA club in the 1960s as the FFA cabin. The structure is masonry and wood. The VCT flooring has been replaced since original construction, so asbestos should not be present.
2. Overhead and profit is to be included in the base bid for allowances.
3. The Corps of Engineers pushed this project to make the facility ADA Handicap
Accessible compliant.
4. The sceptic tank is adequate size for new low-flow plumbing fixtures. Information on the drain field reports and pumping will be issued via Addendum when received.
F. All questions should be issued in writing via email to: tamw@mcduffie.k12.ga.us. Call to verify receipt.
G. Meeting Adjourned.
Please notify the recorder of these minutes of corrections within 10 days of receipt.
Meeting minutes Submitted by: Megan R. Poston
Megan R. Poston
Project Manager
Meeting minutes approved by: Robert L. Mauldin
Robert L. Mauldin NCARB, AIA
Principal Architect, GA-RA-005958
Encl: Agenda
SIS
cc: N. Tam, 2KM, Attendees mailto:mail@2kmarchitects.com mailto:tamw@mcduffie.k12.ga.us
Z:\Active_Projects\2024 Projects\24-09 MCSD\24-09.01 McDuffie Place STEM Center\ADMINISTRATION\(BD) Bid Documents\3 - Pre-Bid\Pre-Bid Agenda.doc
1. Sign-in:
a. Sign and provide complete contact information.
b. Request all parties sign-in with Full Name, Title, Company Name, Phone Number, Fax
Number and E-mail.
2. Introductions:
a. A/E and Owner.
b. Facility Representatives.
3. General Project Overview:
a. Building & use.
1) Convert (2) existing bedrooms to ADA Toilet Rooms.
2) Convert (2) existing toilet rooms with showers into storage and janitor storage.
3) Develop storage room in existing kitchen area.
4) Install new ADA Handicap parking & building access & egress.
5) Construct new free-standing covered open pavilion (Add Alternate #1).
6) Upgrade Architectural finishes:
a) Flooring and wall base.
b) Lighting.
c) Painting.
d) Door Hardware.
7) Raise deck level in screened porch & develop new stairs & landing.
b. Schedule:
1) Cut-off date for prior approvals and questions is November 26, 2025 by 3:00
PM.
2) Answers to questions will be returned via email by Thursday, December 4, 2026 at 4:00 PM.
3) Bid date: December 15, 2025 @ 10:00 AM, completed and sealed bid packages are to be sent to McDuffie Co. BOE office at 716 N. Lee Street, Thomson, GA
30824.
4) Construction Days: 120.
c. Review unique conditions and constraints of the project, site, and specifications:
1) This will be an unoccupied building and site.
a) Construction paths to be defined by Owner/Contractor.
b) Protect public from work hazards.
c) Provide temporary barriers and protection for material storage/laydown areas and areas of work.
2) Conduct on Site:
a) Identification: all workers to have a valid Government issued Photo I.D.
at all times.
b) Proper behaviour/language & Attire is required from all suppliers, subcontractors and general contractor’s workmen.
Z:\Active_Projects\2024 Projects\24-09 MCSD\24-09.01 McDuffie Place STEM Center\ADMINISTRATION\(BD) Bid Documents\3 - Pre-Bid\Pre-Bid Agenda.doc
4. Allowances:
The following Allowances shall be included in the Base Bid. Work shall be performed and approved by the Architect and Owner based on unit prices; time & materials; or lump sum proposals with detailed itemized pricing for the work to be performed. The Allowances are scheduled as follows:
a. ALLOWANCE NO. 1: Digital Drawing Files (CAD & BIM). There will be a service fee of $150.00 per discipline (per building as applicable) for the A/E team to modify & issue digital files for use in submittals. This is at the Contractor’s discretion – if no electronic files will be requested, this allowance amount will be $0.00.
b. ALLOWANCE NO. 2: Unforeseen Conditions
Allowance Amount: $ 20,000.00
5. Add Alternates:
State in proposal the amount to be added or deducted from the Base Bid for each of the Alternates described below. Upon execution of the Contract, implement work and modify work as established under various Alternates as accepted or rejected by the Owner. Clarifications of
Alternates shall be as follows:
a. ADD ALTERNATE #1:
Install new 36’-0” open pavilion structure on the west side of the property per
A4.1.
6. Addendum #1:
a. Clarifications.
b. Pre-Bid Agenda and Sign-In Sheet.
7. Open for questions.
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Soil erosion control measures must be in place prior to any land disturbing activity
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DISTURBED AREA STABILIZATION (W/PERMANENT SEEDING)
DISTURBED AREA STABILIZATION (W/MULCH ONLY)Ds1
CONSTRUCTION SPECIFICATIONS
Grading and Shaping
Grading and shaping may not be required where hydraulic seeding and fertilizing equipment is to be used. Vertical banks shall be sloped to enable plant establishment.
When conventional seeding and fertilizing are to be done, grade and shape where feasible and practical, so that equipment can be used safely and efficiently during seedbed preparation, seeding, mulching and maintenance of the vegetation.
Concentrations of water that will cause excessive soil erosion shall be diverted to a safe outlet. Diversions and other treatment practices shall conform with the appropriate standards and specifications.
Lime and Fertilizer Rates and Analysis Agricultural lime is required at the rate of one to two tons per acre unless soil tests indicate otherwise. Graded areas require lime application. If lime is applied within six months of planting permanent perennial vegetation, additional lime is not required. Agricultural lime shall be within the specifications of the Georgia Department of Agriculture.
Lime spread by conventional equipment shall be “ground limestone.” Ground limestone is calcitic or dolomitic limestone ground so that 90 percent of the material will pass through a 10-mesh sieve, not less than 50 percent will pass through a 50-mesh sieve and not less than 25 percent will pass through a 100-mesh sieve.
Fast-acting lime spread by hydraulic seeding equipment should be “finely ground limestone” spanning from the 180 micron size to the 5 micron size. Finely ground limestone is calcitic or dolomitic limestone ground so that 95 percent of the material will pass through a 100-mesh sieve.
It is desirable to use dolomitic limestone in the Sand Hills, Southern Coastal Plain and Atlantic Coast Flatwoods MLRAs. (See Figure 6-4.1) Agricultural lime is generally not required where only trees are planted.
Initial fertilization, nitrogen, topdressing, and maintenance fertilizer requirements for each spe- cies or combination of species are listed in Table 6-5.1.
Lime and Fertilizer Application When hydraulic seeding equipment is used, the initial fertilizer shall be mixed with seed, innoculant (if needed), and wood cellulose or wood pulp fiber mulch and applied in a slurry. The innoculant, if needed, shall be mixed with the seed prior to being placed into the hydraulic seeder. The slurry mixture will be agitated during application to keep the ingredients thoroughly mixed. The mixture will be spread uniformly over the area within one hour after being placed in the hydroseeder.
Finely ground limestone can be applied in the mulch slurry or in combination with the top dressing.
When conventional planting is to be done, lime and fertilizer shall be applied uniformly in one of the following ways:
1. Apply before land preparation so that it will be mixed with the soil during seedbed preparation.
2. Mix with the soil used to fill the holes, distribute in furrows.
3. Broadcast after steep surfaces are scarified, pitted or trenched.
4. A fertilizer pellet shall be placed at root depth in the closing hole beside each pine tree seedling.
Plant Selection
Refer to Tables 6-4.1, 6-5.2, 6-5.3 and 6-5.4 for approved species. Species not listed shall be approved by the State Resource Conservationist of the Natural Resources Conservation Service before they are used.
Plants shall be selected on the basis of species characteristics, site and soil conditions, planned use and maintenance of the area; time of year of planting, method of planting; and the needs and desires of the land user.
Some perennial species are easily established and can be planted alone. Examples of these are Common Bermuda, Tall Fescue, and Weeping Lovegrass.
Other perennials, such as Bahia Grass and Sericea Lespedeza, are slow to become established and should be planted with another perennial species. The additional species will provide quick cover and ample soil protection until the target perennial species become established. For example, Common seeding combinations are 1) Weeping Loveg- rass with Sericea Lespedeza (scarified) and 2) Tall Fescue with Sericea Lespedeza (unscarified).
Plant selection may also include annual companion crops. Annual companion crops should be used only when the perennial species are not planted during their optimum planting period. A common mixture is Brown Top Millet with Common Bermuda in mid-summer. Care should be taken in select- ing companion crop species and seeding rates because annual crops will compete with perennial species for water, nutrients, and growing space. A high seeding rate of the companion crop may prevent the establishment of perennial species.
Ryegrass shall not be used in any seeding mixtures containing perennial species due to its ability to out-compete desired species chosen for permanent perennial cover.
Seed Quality
The term “pure live seed” is used to express the quality of seed and is not shown on the label. Pure live seed, PLS, is expressed as a percentage of the seeds that are pure and will germinate. Information on percent germination and purity can be found on seed tags. PLS is deter- mined by multiplying the percent of pure seed with the percent of germination; i.e., (PLS = % germination x % purity)
EXAMPLE:
Common Bermuda seed 70% germination, 80% purity PLS = 70% germination x 80% purity PLS = 56% The percent of PLS helps you determine the amount of seed you need. If the seeding rate is 10 pounds PLS and the bulk seed is 56 % PLS, the bulk seeding rate is:
10 lbs. PLS/acre = 17.9 lbs/acre
56% PLS
You would need to plant 17.9 lbs/acre to provide 10 lbs/acre of pure live seed.
Seedbed Preparation Seedbed preparation may not be required where hydraulic seeding and fertilizing equipment is to be used (but is strongly recommended for any seeding process, when possible). When conventional seeding is to be used, seedbed preparation will be done as follows:
Broadcast plantings
1. Tillage, at a minimum, shall adequately loosen the soil to a depth of 4 to 6 inches; alleviate compaction; incorporate lime and fertilizer; smooth and firm the soil; allow for the proper placement of seed, sprigs, or plants;
and allow for the anchoring of straw or hay mulch if a disk is to be used.
2. Tillage may be done with any suitable equipment.
3. Tillage should be done on the contour where feasible.
4. On slopes too steep for the safe operation of tillage equipment, the soil surface shall be pitted or trenched across the slope with appropriate hand tools to provide two places 6 to 8 inches apart in which seed may lodge and germinate. Hydraulic seeding may also be used.
Individual Plants
1. Where individual plants are to be set, the soil shall be prepared by excavating holes, opening furrows, or dibble planting.
2. For nursery stock plants, holes shall be large enough to accommodate roots without crowding.
3. Where pine seedlings are to be planted, subsoil under the row 36 inches deep on the contour four to six months prior to planting. Subsoiling should be done when the soil is dry, preferably in August or September.
Inoculants
All legume seed shall be inoculated with appropriate nitrogen-fixing bacteria. The inoculant shall be a pure culture prepared specifically for the seed species and used within the dates on the container.
A mixing medium recommended by the manufacturer shall be used to bond the inoculant to the seed. For conventional seeding, use twice the amount of inoculant recommended by the manufacturer. For hydraulic seeding, four times the amount of inoculant recommended by the manufacturer shall be used.
All inoculated seed shall be protected from the sun and high temperatures and shall be planted the same day inoculated. No inoculated seed shall remain in the hydroseeder longer than one hour.
Planting Hydraulic Seeding
Mix the seed (inoculated if needed), fertilizer, and wood cellulose or wood pulp fiber mulch with water and apply in a slurry uniformly over the area to be treated. Apply within one hour after the mixture is made.
Conventional Seeding
Seeding will be done on a freshly prepared and firmed seedbed. For broadcast planting, use a culti-packer-seeder, drill, rotary seeder, other mechanical seeder, or hand seeding to distribute the seed uniformly over the area to be treated.
Cover the seed lightly with 1/8 to 1/4 inch of soil for small seed and 1/2 to 1 inch for large seed when using a cultipacker or other suitable equip- ment.
No-Till Seeding No-till seeding is permissible into annual cov- er crops when planting is done following maturity of the cover crop or if the temporary cover stand is sparse enough to allow adequate growth of the permanent (perennial) species. No-till seed- ing shall be done with appropriate no-till seeding equipment. The seed must be uniformly distrib- uted and planted at the proper depth.
Individual Plants Shrubs, vines and sprigs may be planted with appropriate planters or hand tools. Pine trees shall be planted manually in the subsoil furrow. Each plant shall be set in a manner that will avoid crowding the roots.
Nursery stock plants shall be planted at the same depth or slightly deeper than they grew at the nursery. The tips of vines and sprigs must be at or slightly above the ground surface. Where individual holes are dug, fertilizer shall be placed in the bottom of the hole, two inches of soil shall be added and the plant shall be set in the hole.
Mulching
Mulch is required for all permanent vegeta- tion applications. Mulch applied to seeded areas shall achieve 75% to 100% soil cover. When selecting a mulch, design professionals should consider the mulch's functional longevity, vegetation establishment enhancement, and erosion control effectiveness. Select the mulching mate- rial from the following and apply as indicated:
1. Dry straw or dry hay of good quality and free of weed seeds can be used. Dry straw shall be applied at the rate of 2 tons per acre. Dry hay shall be applied at a rate of 2 1/2 tons per acre.
2. Wood cellulose mulch or wood pulp fiber shall be used with hydraulic seeding. It shall be applied at the rate of 500 pounds per acre. Dry straw or dry hay shall be applied (at the rate indicated above) after hydraulic seeding.
3. One thousand pounds of wood cellulose or wood pulp fiber, which includes a tackifier, shall be used with hydraulic seeding on slopes 3/4:1 or steeper.
4. Sericea Lespedeza hay containing mature seed shall be applied at a rate of three tons per acre.
5. Pine straw or pine bark shall be applied at a thickness of 3 inches for bedding purposes. Other suitable materials in sufficient quantity may be used where ornamentals or other ground covers are planted. This is not ap-propriate for seeded areas.
6. When using temporary erosion control blan- kets or block sod, mulch is not required.
7. Bituminous treated roving may be applied on planted areas, slopes, in ditches or dry water- ways to prevent erosion. Bituminous treated roving shall be applied within 24 hours after an area has been planted.
Application rates and materials must meet Georgia Depart- ment of Transportation specifications.
Wood cellulose and wood pulp fibers shall not contain germination or growth inhibiting factors. They shall be evenly dispersed when agitated in water. The fibers shall contain a dye to allow visual metering and aid in uniform application during seeding.
Applying Mulch Straw or hay mulch will be spread uniformly within 24 hours after seeding and/or planting. The mulch may be spread by blower-type spreading equipment, other spreading equipment or by hand. Mulch shall be applied to cover 75% of the soil surface.
Wood cellulose or wood fiber mulch shall be applied uniformly with hydraulic seeding equipment.
Anchoring Mulch Anchor straw or hay mulch immediately after application by one of the following methods:
1. Hay and straw mulch shall be pressed into the soil immediately after the mulch is spread. A special “packer disk”' or disk har- row with the disks set straight may be used. The disks may be smooth or serrated and should be 20 inches or more in diameter and 8 to 12 inches apart. The edges of the disks shall be dull enough to press the mulch into the ground without cutting it, leaving much of it in an erect position. Mulch shall not be plowed into the soil.
2. Synthetic tackifiers, binders or hydraulic mulch specifically designed to tack straw, shall be applied in conjunction with or im- mediately after the mulch is spread. Syn- thetic tackifiers shall be mixed and applied according to manufacturer's specifications. All tackifiers, binders or hydraulic mulch specifically designed to tack straw should be verified nontoxic through EPA 2021.0 testing. Refer to Tackifiers-Tac
3. Rye or wheat can be included with Fall and Winter plantings to stabilize the mulch. They shall be applied at a rate of one-quarter to one-half bushel per acre.
4. Plastic mesh or netting with mesh no larger than one inch by one inch may be needed to anchor straw or hay mulch on unstable soils and concentrated flow areas. These materials shall be installed and anchored according to manufacturer's specifications.
Bedding Material
Mulch is used as a bedding material to con- serve moisture and control weeds in nurseries, ornamental beds, around shrubs, and on bare areas on lawns.
Material Depth Grain straw 4” to 6” Grass Hay 4” to 6” Pine needles 3” to 5” Wood waste 4” to 6” Irrigation
Irrigation will be applied at a rate that will not cause runoff.
Topdressing
Topdressing will be applied on all temporary and permanent (perennial) species planted alone or in mixtures with other species. Recommended rates of application are listed in Table 6-5.1.
Second Year and Maintenance Fertilization
Second year fertilizer rates and maintenance fertilizer rates are listed in Table 6-5.1.
Lime Maintenance Application
Apply one ton of agricultural lime every 4 to 6 years or as indicated by soil tests. Soil tests can be conducted to determine more accurate requirements, if desired.
Use and Management
Mow Sericea Lespedeza only after frost to ensure that the seeds are mature. Mow between November and March.
Bermudagrass, Bahiagrass and Tall Fescue may be mowed as desired. Maintain at least 6 inches of top growth under any use and management. Moderate use of top growth is beneficial after establishment.
Exclude traffic until the plants are well established. Because of the quail nesting season, mowing should not take place between May and September.
SPECIFICATIONS
Mulching Without Seeding This standard applies to graded or cleared areas were seedings may not have a suitale growing season to produce an erosion retardant cover, but can be stabilized with a mulch cover.
Site Preparation
1. Grade to permit the use of equipment for applying and anchoring mulch.
2. Install needed erosion control measures as required such as dikes, diversions, berms, terraces and sediment barriers.
3. Loosen compact soil to a minimum depth of 3 inches.
Mulching Materials Select one of the following materials and apply at the depth indicated:
1. Dry straw or hay shall be applied at a depth of 2 to 4 inches providing complete soil coverage. One advantage of this material is easy application.
2. Wood waste (chips, sawdust or bark) shall be applied at a depth of 2 to 3 inches. Organic material from the clearing stage of development should remain on site, be chipped, and applied as mulch. This method of mulching can greatly reduce erosion control costs.
3. Polyethylene film shall be secured over banks or stockpiled soil material for temporary protection. This material can be salvaged and re-used.
Applying Mulch When mulch is used without seeding, mulch shall be applied to provide full coverage of the exposed area.
1. Dry straw or hay mulch and wood chips shall be applied uniformly by hand or by mechanical equipment.
2. If the area will eventually be covered with perennial vegetation, 20-30 pounds of nitrogen per acre in addition to the normal amount shall be applied to offset the uptake of nitrogen caused by the decomposition of the organic mulches.
3. Apply polyethylene film on exposed areas.
Anchoring Mulch
1. Straw or hay mulch can be pressed into the soil with a disk harrow with the disk set straight or with a special "packer disk". Disk may be smooth or serrated and should be 20 inches or more in diameter and 8 to 12 inches apart. The edges of the disk should be dull enough not to cut the mulch but to press it into the soil leaving much of it in an erect position. Straw or hay mulch shall be anchored immediately after application. Straw or hay mulch spread with special blower-type equipment may be anchored. Tackifers, binders and hydraulic mulch with tackifier specifically designed for tacking straw can be substituted for emulsified asphalt. Please refer to specification Tac-Tackifers. Plastic mesh or netting with mesh no larger than one inch by one inch shall be installed according to manufacturer's specifications
2. Netting of the appropriate size shall be used to anchor wood waste. Openings of the netting shall not be larger than the average size of the wood waste chips.
3. Polyethylene film shall be anchor trenched at the top as well as incrementally as necessary.
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NOTE:
PERMANENT COVER SPECIES SHALL BE SELECTED FROM
THE LIST ON THE RIGHT AND APPROVED BY THE MCDUFFIE
COUNTY BOARD OF EDUCATION PRIOR TO PLANTING.
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