B11_Q_A_LO7_KIDS_OHV_TRAIL_4.pdf

BLM-CO WRFO LO7 KIDS OHV TRAIL

Q&A

1. In the downloadable documents on www.sam.gov for Notice Id 140L1725R0005 the scope of work talks about two trails – the Kids Trail and the Beginners Plus Trail – however the specifications pages (8-18) only address the Kids Trail , it would appear there is more comprehensive documents that may be missing from the posting.

These are both Kids trails, they just have different names.

2. The document says the estimated length of the trail is ~1 mile – however on page 8 it says one trail is 1,025 Ft (approx. .20 Miles) and the second trail is 1120 Ft (approx.. .21 Miles) so the total length between the details on the map (page 8) would only equal .41 Miles or just under ½ a mile – how is the other ½ mile accounted for (Page 5 – Under Project Description Item 1 says “the resulting trail shall be approximately 1-mile in length”)

Apologies for the inconsistencies, the trail outlines mapped are not exact, thereby we have given a generous estimate of 1 mile to account for the design of the trail which will have small turns and berms in order to complete the required features section of the specifications.

3. Can you please obtain the specifications for the “Beginner Plus” trail. It appears that pages 8-18 only speak to the Kids Trail details.

These are the same general design specs, the names are specific to each trail, but they both must meet the outlined design features.

4. On page 5 – under “Project Description” –

a. Item #2 “The Contractor may use any on site natural elements to achieve the goals set forth in this SOW” and on Page 12 it states “The trail shall be classified as one lane Class 4 Trail, characterized by a highly developed design featuring a native surface. No additional materials shall be introduced to the site” However the Grid for Trail Class 4 in section Design Surface states “Native, with extensive gravel, pavers, or other Imported Materials – Firm and Stable “and obstacles “Smooth , with Few obstacles exceeding 1 to 3 inches however, on page 17 it states a 8” horizontal log obstacle should be used; and 12” Tall & 4” W min rock rout crops should be used.

The feature described on page 17 is not mandatory. Follow Class 4 requirements, drawings were standardized, and all measurements have been removed. However, if such features are present, please adjust the heights to comply with Class 4 trail requirements while ensuring that drainage is optimized. Defining a Class 4 trail can be complex; therefore, it is important to note that no imported materials will be permitted. Please adhere to the maximum grades and sloping requirements associated with Class 4 trails, minimizing obstacles where possible, while ensuring that no materials are brought in from external sources.

b. On page 5 – under “Project Description” – Item # 5 it states, “may want to use stares is certain circumstances, this is allowed but must be approved by the BLM COR”. What is this referring to when it says “Stares”?

Apologies for the error, this statement has been removed.

https://gcc02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.sam.gov%2F&data=05%7C02%7Cc1strickland%40blm.gov%7Cbcb283602d764f5fa73c08ddbccd290e%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638874311515388949%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=DVzdeVRP3PlngfRJSURA7sziWki%2Bfdi%2F3SGxUbic6Hs%3D&reserved=0

c. Is there an expectation of any signage postings for this trail – calling out Required Safety Equipment or Laws or Regulations for this site? Or 4WD Required? Or OHV Education Courses required or under 18-having OHV education certificates on person, etc.?

Signage is not included in the SOW and is the responsibility of the Field Office.

5. Page 12 “Design Tread Width” – how frequently should there be passing spots made available? The general cross section drawings indicate “Classified as a one-lane Class 4 Trail” – however the design details indicate a Class 4 is more commonly two-lane travel – so given this would only be one-lane of travel - depending on the location and grade of that location can you give more specifics of passing spot expectations? Should there be posted signage indicating “one way” only?

To increase safety measures for children and beginner OHV enthusiasts?

This will be a one-way travel as designated by the field office.

6. Page 12- “Water Control”

a. A Type 4 Trail should have Dip Drains – I want to be sure the expectation would be digging a broad, shallow depression, usually 15-30 feet long and 8-12 inches deep. Then using, the excavated soil its mounded and compacted on the down-slope side of the dip, effectively creating a barrier to direct water flow. Because these will range in location to help collect and direct water to stable outlets, preventing water from pooling on the trail or road – are there preferred or known drainage pathways that BLM recommends the Dip Drains being located?

These will need to be field identified and confirmed with the inspector or Contracting Officer Representative. The trail does not have a specific design, hence the requirement for past experience.

b. For any water crossings – what is the max depth expectation for this trail system? I.e., Up to Hub Depth? 12”? 18”? etc.

There are no water crossings.

c. How frequent does the BLM want the grade reversals and out sloping of the entire tread and are there problem areas that can be called out to ensure water continues sheeting across the trail—not down it? I.e., are there natural dips in the terrain? Our understanding is the grade of the trail is reversed for about 3 to 5 meters (10 to 15 feet), then "rolled" back over to resume the descent. The specifications don’t call out how frequently this water control feature should be used, we are assuming about every 6 to 15 meters (20 to 50 feet). A trail that lies lightly on the land will take advantage of natural dips and draws for grade reversals. This would enhance the trail user's experience by providing an up-and-down motion as the trail curves up and around large obstacles like trees or boulders.

The terrain contains natural dips, again this will require some in field design, there are no specific requirements for distance between grade reversals, though drainage flowing down the middle of the trail shall be prevented by cross slopes and grade reversals, as necessary.

d. Is there a known source or direction of water where there is the path of least resistance for the natural sheeting to occur?

There is no specified stream, but when rain does occur it will run down slope, by using common drainage methods as given in example drawings in the specs, allowing for a downslope flow, natural sheeting can occur.

e. Is the use of “Knick Drains” allowed on this project where water may build up in low laying or flat areas? This is where there would be a shaved down semicircle about 3 meters (10 feet) long that is out sloped about 15 percent in the center and would be smooth and subtle and should be unnoticeable to users.

Knick drains are acceptable.

7. Page 12 “Sustainable Trail Design”

a. When stating “integrated drainage” does this allow for the use of lateral drainage pipe to direct the water to discharge directly into a channel bank?

There will be no imported material, so thereby no drainage pipe should be used.

b. “Controlled Grade” – can the specification provide more detailed instructions on the grading requirements According to Page 12, grade shall be more than 3% and less than 10% with a short pitch maximum of 15%. Maximum cross-slope can be 8%, with a target range of 3-5%.

8. Page 12 “Design Clearing” states the maximum height should be 10’ minimum – but the drawing on page 13 reflects 6’. It also states the clearing outside of tread edge should be more than 18”- 24”but the drawing on page 13 only shows a 12” clearing from tread edge.

Follow Class 4 requirements, drawings were standardized, and all measurements have been removed.

9. Page 14 it reflects desired drawings for a curve – it also refers to an item called “Section X-X” which I assume refers to the “Plan” drawing on the top of the page which shows the width between both points of the curve should be a total of 16’ min (8’ from center to both edges of trail) however, the specs on page 12 for “Design Turns” state it should be a minimum of 20’.

Follow Class 4 requirements, drawings were standardized, and all measurements have been removed.

10. Page 14 It reflects “Elevation”, but I do not see any unit of measure that identifies the change of elevation .

Follow Class 4 requirements, drawings were standardized, and all measurements have been removed. The contractor shall identify as described if they plan to include a climbing turn or other features on the course layout, the only requirement is to provide a course that helps riders learn uphill and downhill maneuvers.

11. Page 18- it states, “Integrate straightforward obstacles, such as small hills, rocks, and ramps, to enhance riders' skills and promote adaptability.” – but if following the Design Surface Specs – these should not exceed 1 to 3 inches which I get the feel is not the intended size of the obstacles. On page 15 it talks about variable slopes ranging from less than 30% tread width to >50%. But on page 12- it says the Design Tread Cross Slope should not exceed 8% with a target range of 3% to 5% Follow Class 4 requirements, drawings were standardized, and all measurements have been removed.