HomeMy WebLinkAboutStormwater Runoff Letter � ASPEN
• ENGINEERS
December 3, 2014
485 W. Main St,Suite B
PO Box 205
Steve O'Brien Kuna,Idaho 83634
City of Meridian (208)466-8181
www.Aspen Engineers.com
33 E. Broadway Ave
Meridian, ID 83642
SUBJECT: Opinion Regarding Impact of Building Addition on Stormwater Runoff for the
NEW EXPANSION FOR THE STUDIO CHIC SALON&SPA
1308 N.Meridian Rd
Meridian,Idaho
Dear Steve:
As we previously discussed on the phone, Studio Chic Salon & Spa is proposing to construct an
addition to their existing building located at 1308 N. Meridian Rd in Meridian, Idaho. This letter is
intended to address the City's requirement to evaluate the potential impact of the building expansion
and site improvements on stormwater management.
Based on the site plans provided by Jeff Hatch and Randy Haverfield of Architecture Northwest, it
appears that an expansion will be constructed on the north side of the existing building. This
expansion will be remove a small landscape island, but mainly replace one impervious surface
(pavement) with another (roof). The site plan also shows that the associated reconfiguration of the
parking lot will include the removal of pavement and construction of a landscape buffer along the
entire north boundary of the parking lot and a portion of the south boundary located east of the
existing building.
I visited the site on December 2, 2014 to look at the location of the proposed building addition and the
condition of the rear parking lot. As shown on the attached photos, the west portion of the existing
site appears to be paved with standard asphalt pavement. The east side of the site appears to be
paved with a recycled asphalt mix, except for a small area located near the northeast corner that is
occupied by a shed. The plans show that the shed will be removed and then paved to match the
surrounding area. Therefore, with the exception of the existing landscaping along Meridian Rd, nearly
the entire existing site is covered with pavement or roofs which are impervious surfaces.
It appears that the proposed conversion of asphalt paving to the landscaped areas along the north and
south boundaries of the parking lot will decrease the overall site runoff coefficient and therefore
decrease the amount of runoff generated by the site. Therefore it is my opinion that the proposed
building addition and site modifications will not significantly increase the amount of stormwater
runoff generated at the site.
Therefore we request that no modifications to the existing facilities used to manage stormwater be
required as part of the proposed building expansion and site improvements.
Feel free call me at(208)466-8181 if you have any questions or need additional information.
P:\2014\14045\Corres0Outgoing\14045-1_City 2094-12-03.doc
Mr. Steve O'Brien
ASPEN
City of Meridian
December3,2014 • ENGINEERS
Page 2 of 2
Respectfully, � �c T
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Aspen Engineers, Chartered 1 0 0 7 7 fl
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Lance Warnick, P.E. ,�` �C nc
Principal Engineer 4CF W 0\
cc: Aspen 14045
Jeff Hatch (Architecture Northwest)
Attachments
1. Site Photos showing existing pavement
P:\2014\140451CorresplOutgoing\14045-1_City_2014-12-03.doc Page 2 of 2
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