TWRA_Woody_Vegetation_Mulching_Specifications_.pdf
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- Attached to
- TWRA Woody Vegetation Mulching - UPDATED
- Solicitation number
- Event 32801-13636
- Issued by
- Dickson County, Tennessee
About this file
This is an Invitation to Bid (ITB 32801-13636) issued by the Tennessee Wildlife Resources Agency (TWRA) for woody vegetation mulching services at two Wildlife Management Areas (WMAs): Thorny Cypress and Tumbleweed. The project involves cutting and mulching woody vegetation in early successional habitat areas, specifically targeting Cottonwood, Sweet Gum, Willow, and Hackberry trees (excluding Oak species) with diameters up to 12 inches. The total project area is approximately 307 acres, comprising 131 acres at Thorny Cypress WMA in Dyer County and 176 acres at Tumbleweed WMA in Lake County. The contractor must complete all mulching activities by June 28, 2025, using skid steer machines with drum mulching heads, and must have a minimum of 2 years experience in similar large-scale mulching projects.
The bid specifications require the contractor to have a machine with at least 74 horsepower, equipped with a high-flow hydraulic system and forestry shields, and capable of thoroughly grinding woody vegetation debris. The contractor must provide references from at least three governmental agencies or non-governmental organizations where similar work has been performed. TWRA is seeking bids on a per-acre basis and reserves the right to reduce the total acreage. The project contact is Josh Emerson, Wetlands Manager for Lower Obion River Units, who can be reached at 731-571-2184 or Josh.Emerson@tn.gov. The areas to be mulched are not in a continuous block but are scattered throughout the two WMAs, with tree heights ranging from 5 to 30 feet and stem densities varying from 4 inches to a few feet apart.
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Specifications for Tennessee Wildlife Resources Agency (TWRA) for Woody Vegetation Mulching
ITB 32801- 13636
This solicitation is for the procurement of a service to cut and mulch all woody vegetation from designated early successional areas on the WMA: (Thorny Cypress, and Tumbleweed).
A. Location of Area Information - Services shall be provided at the following locations:
1. Thorny Cypress and Tumbleweed Wildlife Management Area (WMA).
a. Location: Thorny Cypress WMA is in Dyer County, near Dyersburg, Tennessee.
b. The Early Successional sites on Thorny Cypress WMA shall consist of approximately 131 acres in size.
2. Tumbleweed WMA
a. Location: Lake County, near Ridgely, Tennessee.
b. The Early successional sites on Tumbleweed WMA shall consist of approximately 176 acres in size.
B. Additional Information:
1. These areas shall be cut and mulched with various types of skid steer machines with drum mulching heads, to cut and mulch woody vegetation ion 12" DBH (Diameter at Breast Height) and below. Acreage figures are approximate and TWRA shall not be responsible for any discrepancies with actual acreage.
2. TWRA is seeking bids of dollars per acre to mulch the properties listed in A.1. and A.2., with approximate total acreage of 307 acres.
3. Site visits are available upon request by contacting the on-site supervisor listed below, in accordance with Terms and Conditions 1.2.
4. Contractor shall complete all mulching activities no later than June 28, 2025.
5. Protection: Contractor shall remove all bottles, cans, paper, and other litter from the work area daily.
6. Project Contact/On-Site Supervisor:
Josh Emerson Wetlands Manager Lower Obion River Units 355 Menzies Rd.
Dyersburg, TN. 38024 Cell: 731-571-2184 E-mail: Josh.Emerson@tn.gov
C. Required Experience:
1. The contractor shall have a minimum of 2 years experience mulching in tracts of 25 acres or more, using Various types of Skid steers with Drum mulching heads
2. Contractor shall provide references for a minimum of three Governmental Agencies and/or Non-Governmental Organizations (foundations, non-profits, etc.) for which this type of mulching work has been performed.
mailto:Josh.Emerson@tn.gov
D. Woody Vegetation Mulching
1. Species that shall be treated: Cottonwood trees, Sweet
Gum trees, Willow trees, Hackberry trees (Everything except Oak species)
2. These areas are early successional habitat areas that are being taken over by saplings and small trees. These sapling trees are mostly composed of the species listed above and range in size from ½"' in diameter to roughly 12" in diameter at breast height (DBH). Stem density will vary widely from 4" apart to a few feet apart each site will be different. Tree height will range anywhere from 5 feet to 30 feet high.
3. The OPS coordinates for the Thorny South site staging g area are (36.05 750 ° N, 89.57 167 ° W)
4. The OPS coordinates for the Thorny South site staging area are (36.10 2 44 ° N, 89.55840°W)
5. The OPS coordinates for the Tumbleweed site staging area are (36.1982 1° N, 89.52988°W)
E. Grinding and Mulching
1. All woody vegetation (Trees and Saplings Except for Oak Species) shall be Cut and Mulched thoroughly.
2. The contractor shall have a Drum mulcher style head for their cutting machine, no bush hog type cutters shall be considered for this project.
3. The Contractor's machine shall have a minimum HP requirement of 74 HP and shall be equipped with a High Flow Hydraulic system to run the Drum mulching head.
4. Contractor' s machine shall be equipped with forestry shields to protect the operator.
5. The contractor shall be required to cut all Woody Vegetation except for oak species and trees with a DBH greater than 12 inches and grind up debris thoroughly.
6. The contractor shall need a means of transportation for their machine to move around on the WMA's. The acreage for this project is not in one continuous block, it is scattered throughout the two WMA's; some areas are a few miles apart. The total Acreage for this project is estimated to be 307 acres.
7. TWRA reserves the right to lessen the acreage.
8. The Contractor shall be required to maintain their equipment in a safe, well-maintained, good working condition on.
9. Once starting this project, the Contractor shall stay on site until the completion of this project.
10. All equipment shall be removed from the project upon completion.
Thorny North
112.6 ac to be grinded to remove the woody vegetation to improve early successional habitat and reset succession
Legend () Thorny
Thorny South
18.5 ac to be grinded to remove the woody vegetation to improve early successional habitat and reset succession.
c) Thorny
Tumbleweed WMA consist of approximately 176 acres in size.
| Specifications |
| D. Woody Vegetation Mulching |
| E. Grinding and Mulching |
| Legend |
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