A06_Detailed_Specs.docx

DETAILED SPECIFICATIONS

HERBICIDE APPLICATION

2023 HD and Bishop Creek Herbicide Weed Treatment

1. Target Species: Scotch thistle.

Additional noxious weed species found within the designated contract boundary, and susceptible to chemical intended for use, will also be treated.

2. Treatment Area: 838 acres including up to approximately 14 acres of streams/have the potential for water present and will require the use of both aquatic herbicide and adjuvant. Treatment areas vary in the density of noxious weeds that are within the polygon. Actual weed treatments will be less than that of the treatment area itself.

3. Location of Work Site: The Bishop Creek project area is located approximately 8.5 miles north of Wells, NV. The Legal Description for the treatment area is: T39N R62E. The HD project area is located approximately 15 miles northeast of Wells, NV. The Legal Description for the treatment area is: T40N R64E & T40N R65E. See Attached Location Maps.

4. Access to Work Site: Public or private access roads damaged by the Contractor shall be restored, at the Contractor’s expense, to the same condition they were in at the commencement of work.

5. Approximate Performance Period: Period of performance is estimated, and timing of treatments will need to be flexible to maximize the effects on target weed species. The anticipated treatment window for this project is May 22nd to June 30th

6. Requirements of Equipment to be supplied by the Contractor: Sufficient to meet specifications of the contract.

7. Loading Facilities: Use of any loading area on federal or private land, shall be arranged by and at the discretion and risk of the Applicator.

8. Work Crew Requirements: Work crew for handling and mixing of chemical and loading equipment shall be furnished by the Applicator.

9. Requirements of Chemical to be supplied by the Contractor: Herbicide, surfactant, and dye shall be used and selected from the attached lists of Approved Herbicide Formulations and Approved Adjuvants for use on BLM land. Colorant/dye must be visible for 3 days after application.

10. Kind of Chemical: Clopyralid + Metsulfuron methyl + Surfactant + Dye OR Chlorsulfuron + 2,4-D + Surfactant + Dye AND Aquatic 2,4-D + Aquatic Surfactant + Dye

11. Rate of Application:

HD:

· Terrestrial Tank Mix: Clopyralid (Transline or equivalent) at 16 ounces/acre (0.25 lb A.E./acre) + Metsulfuron methyl (Escort, MSM60, or equivalent) at 1 ounces/acre (0.0375lb AI/acre) + surfactant (Rate as specified on label and compatible with herbicide) + Dye

· Terrestrial Tank Mix Alternative: Chlorsulfuron (Telar XP or equivalent) at 1.0 ounces/acre (0.047 lb AI/acre) + 2,4-D (Alligare 2,4-D or equivalent) at 32 ounces/acre (0.95 lb ae/acre) + surfactant (Rate as specified on label and compatible with herbicide) + Dye

· Aquatic Mix: Aquatically approved 2,4-D (Alligare 2,4-D or equivalent) at 64 ounces/acre (1.9 lb ae/acre) + Aquatically approved surfactant (Rate as specified on label and compatible with herbicide) + Dye.

Bishop Creek:

· Terrestrial & Aquatic Tank Mix: Aquatically approved 2,4-D (Alligare 2,4-D or equivalent) at 48 ounces/acre (1.425 lb ae/acre) + Aquatically approved surfactant (Rate as specified on label and compatible with herbicide) + Dye

11. Remarks and Other Requirements: Apply the spray solution in properly maintained and calibrated equipment capable of delivering the desired volume. Controlling drift is the responsibility of the Applicator. If there is potential for harm to non-target native species due to broadcast spraying certain areas the contractor MUST spot spray the target species in those given areas.

HD: The HD herbicide weed treatment area consists of roadside and upland terrestrial application. To the best of the Government’s knowledge known access issues related to private landowner permissions or washed-out roads were avoided. However, the Government cannot guarantee additional issues may not arise due to previously undocumented or changing conditions (i.e. fire activity, previously unreported washouts, or overgrown roads) and access restrictions (i.e. locked gates), especially in the “checkerboard ownership” areas. Even if access is limited, contractor is expected to travel these areas for treatment. Terrain varies from relatively flat 2-5% slope to rolling hills ranging from 10-30% slope. Soils are loamy. Elevation ranges from 5800 to 6600 feet. Vegetation consists of dense patches of Utah Juniper and Wyoming sage. Mixed perennial bunchgrasses, native forbs, annual invasive grasses and forbs are widespread throughout. Portions of the contract area have recent burned so dense patches of downed/burnt Utah Juniper are also present.

Bishop Creek: The Bishop Creek herbicide weed treatment area consists of roadside and upland terrestrial application. To the best of the Government’s knowledge known access issues related to private landowner permissions or washed-out roads were avoided. However, the Government cannot guarantee additional issues may not arise due to previously undocumented or changing conditions (i.e. fire activity, previously unreported washouts, or overgrown roads) and access restrictions (i.e. locked gates), especially in the “checkerboard ownership” areas. Even if access is limited, contractor is expected to travel these areas for treatment. Terrain varies from relatively flat 2-5% slope drainages to rolling hills ranging from 10-30% slope. Soils are loamy on the slopes and clay in the drainages. Elevation ranges from 5600 to 6200 feet. Vegetation consists of riparian margins and dense patches of Utah Juniper and Wyoming sage. Mixed perennial bunchgrasses, native forbs, annual invasive grasses and forbs are widespread throughout. Portions of the contract area have burned, so dense patches of downed/burnt Utah Juniper are also present.

For areas where water is present during the time of application, the buffers for non-aquatically formulated herbicides will be maintained at 10 feet for application by handgun and 25 feet for application with boom equipment. Spraying up to the water’s edge (within the buffer) will require use of aquatic formulated herbicide and surfactant.