A21 - 23Q0013_BEJ Tree Removal Questions.pdf

W912PM23Q0013, B. Everett Jordan Dam and Lake Spillway Tree & Vegetation Removal

Questions & Responses

1. Is herbicide still needed if we could mulch the trees down to or below ground level?

Response: It is preferred that herbicide is used on hardwood, as some species are vigorous and aggressive growers and sprouts reappear. This requirement utilizes a Performance Work Statement, as it states no growth for a 6-month period.

2. Are there any restrictions on what equipment can be used on the shoreline?

Response: Given the amount of woody growth and driftwood, some ground disturbance is expected to minimize cost. The only equipment restriction in place is the preservation of the grade and herbaceous ground cover of the spillway. It must remain intact. The Performance Work Statement states for the removal of all living and dead woody vegetation leaving only herbaceous growth and rip rap, then utilize the appropriate herbicide application to prevent regrowth of all cut vegetation without elimination the herbaceous cover assuring a 90% kill (again) without eliminating herbaceous cover. The herbaceous ground cover is essential to prevent erosion in the 100-year flood plain area of the overflow spillway.

3. Can all wooded debris be burned on site or is this at the discretion of the CO?

Response: Yes, with the proper burn permits submitted to the Government.

4. Is there a government estimate range for this project?

Response: No, there is not a government estimated range for this requirement.

5. Will herbicide only be used on fresh cut stumps?

Response: Herbicide shall be used on cut stumps to prevent growth. Also, please see the response for

Question #1.