HomeMy WebLinkAbout15. Sopris Engineering Expanded Response Letter 2021-01-11January 11, 2021
Jack Albright
402 Park Ave
Unit A
Basalt, CO 81621
Re: Limited Impact Review Professional Office -Garfield County File Number: LIPA-12-20-8818
Sopris Engineering # 30201
Dear Mr. Albright,
Sopris Engineering has review the NTP letter from the Garfield County Planner, Angie Martell, dated
December 30th, 2020. We have made the following responses to the requested items in the letter.
4. Expand response and provide demonstration of compliance with Article 7 Standards to fully address
Section 7-107 and Section 7-302.N as related to Access Driveways for Commercial Uses.
Addressing Section 7-107, Sopris Engineering has made several site visits and has reviewed surveyed
information. The article states the follow:
A. The lot must have legal and physical access to the public row, the subject property does have
physical access to the CDOT ROW and is in currently acquiring a CDOT Access Permit, from the
state. We do not expect any improvements to be required by the access permit, but if any
conditions of approval are required a NTP will be obtained and the work will be completed.
B. Safe Access- SE has reviewed the site lines for the property and the corresponding speed limit of
45 MPH and has confirmed that the driveway access is adequate. In addition, the proposed
increase in traffic will not trigger a requirement for the construction of an acceleration lane,
deceleration lane or turning lane to enter or exit the property. The professional office is for an
Architectural firm and will not be adding heavy equipment, heavy hauling, or commercial
trucking to the access. Thus, SE believes that there is safe access to the subject property per
County, State and Federal access regulations.
C. Adequate Capacity- We understand that the proposed office conversion will increase traffic, as
stated in our Engineering Report dated December 8th, 2020, although the increase in traffic is
not significant enough to cause traffic congestion of unsafe traffic conditions.
D. Road Dedications- This section does not apply to the subject property, the access to the
property is CDOT ROW and no additional ROW is proposed.
E. Impacts Mitigated- The proposed conversion from a residential home to an office will not
generate hauling, truck traffic or equipment use.
F. Design Standards- Sopris Engineering previously addressed this in our Engineering report. The
current average daily trips is 17, and the proposed ADT will be increased to 54. The current
standard for the driveway is Primitive and will move to the Semi Primitive Design Standards. Per
502 Main Street 0 Suite A3 0 Carbondale, CO 81623 0 (970) 704-0311 0 Fax (970) 704-0313
SOPRIS ENCINEERINC • LLC
civil consultants
January 11, 2021
our site visits and review of the surveyed information we confirm that the driveway is in
compliance with these standards.
Addressing Section 7-302.N
N. Access Driveways
1. Minimum width of the access driveway for a commercial or industrial use shall be 12
feet for a 1-way drive and 24 feet for a 2-way day.
- On Site Plan dated December 9th, 2020, it was proposed to have a 23' driveway. We
have updated the site plan to reflect a 24' driveway entrance to be in compliance with
the commercial requirements of this section
2. The access driveway for residential use shall be 10 feet for 1-way drive and 20 feet
for a 2-way drive.
- Since the driveway is 24 feet per the commercial drive standards the standards are met
for the residential section.
7. Please provide information for all required sections identified in Section 4-203(E) for Grading and
Drainage Plan or Provide a waiver request which includes specific responses in accordance with
section 4-202 Waiver of Submission Requirements.
We have reviewed all the required sections of Section 4-203 (E), and by doing so we have
determined that we will submit a wavier, in accordance to section 4-202. That wavier is attached to this
letter.
If you have any questions or need additional information, please call.
Sincerely,
SOPRIS ENGINEERING, LLC
///2'
Yancy Nichol, PE, Principle
502 Main Street 0 Suite A3 0 Carbondale, CO 81623 0 (970) 704-0311 0 Fax (970) 704-0313
SOPRIS ENCINEERINC • LLC
civil consultants