HomeMy WebLinkAboutFile Documents.630 W Hopkins Ave.0052-2020-BRES (44) I( -A
Komar
&Associates,I
eotec ni al and Materials Engineers 5020 County Road 154
and Environmental Scientists Glenwood Springs, CO 81601
phone: (970)945-7988
fax: (970)945-8454
email: kaglenwood@kumarusa.com
An Employee Owned Company www.kumarusa.com
Office Locations: Denver(HQ),Parker,Colorado Springs, Fort Collins,Glenwood Springs,and Summit County,Colorado
March 4, 2020
S2 Architects
Attn: Joseph Spears
215 South Monarch Street, Suite G-102
Aspen, Colorado 81611
joseph@s2architects.com
Project No. 20-7-128
Subject: Proposed Drywell Location Review, 630 West Hopkins Avenue, Aspen, Colorado
Gentlemen:
As requested, we are providing review comments of the proposed drywell location at the subject
site. We previously conducted a percolation test for the drywell design and presented our
findings in a report dated February 13, 2020, Project No. 20-7-128.
The drywell casing will be 6 feet in diameter and located about 4 feet from the north side of the
building about 35 feet east of where we drilled the exploratory boring and conducted the
percolation test. The soils encountered consist of sandy gravel, cobbles and boulders to the
drilled depth of 11 feet. The measured percolation rate of about 2 minute per inch indicates a
relatively free draining soil.
In our opinion, the flow from the drywell will be radially out and down and not affect the dense,
coarse granular soils assumed as the foundation support material. The drywell should be
carefully built and backfilled to not undermine the footing bearing soils.
If you have any questions or need further assistance,please call our office.
Sincerely,
Kumar& Associates, Inc.
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RECEIVED
06/30/2020
ASPEN
BUILDING DEPARTMENT