HomeMy WebLinkAboutSub Permit.440 N 5th St.0072.2019 (15).ARBK MOUNTAIN CROSS
ENGINEERING, INC.
Civil and Environmental Consulting and Design
March 05, 2019
Ms. Gretchen Greenwood
Gretchen Greenwood Architects
210 South Galena Street, Suite 30
Aspen, CO 81611
RE: 440 North 5th Street
Dear Ms. Greenwood:
The purpose of this correspondence is to evaluate the proposed construction to the residence at
440 North 5th Street. The plans provided have been reviewed and the scope of work can generally
be described as remodel of the existing deck. Based on the area calculations that were provided,
the deck will decrease in area mainly because the existing staircase will be removed. There is an
area of deck expansion proposed however this area is over a patio that is already impervious. It is
assumed that the area beneath the stairs will be returned to either turf or landscaping. If this is the
case, the remodel will slightly decrease the overall impervious area of the site and it appears that
the area needed to remove the staircase will be less than 200 square feet. This should be verified.
Concerning the existing drainage system: it was designed for a site with a larger impervious area
and the proposed runoff would only be decreased. The existing drainage system should have
adequate capacity assuming that it was installed and designed adequately.
Since the proposed construction decreases the impervious area and the area of site grading would
be less than 200 square feet,it is probable that not even a minor grading and drainage plan or report
would be required.
The conclusions and opinions that are expressed above are based on the information available at
the time of preparation of this letter. Any additional information presented afterward may require
that these opinions and recommendations be modified.
Feel free to call if you have any questions, concerns, or comments.
Sincerely,
Mountain Cross Engineeri g, Inc.
C s. ale,PE
RECEIVED
04/04/2019
8261/2 Grand Avenue, Glenwood Springs,CO 81601
P:970.945.5544 F:970.945.5558 www.mountaincross-eng.com ASPEN
BUILDING DEPARTMENT