RE Salmon Run Apartments - Updates Questions 3IPM.Note
RE: Salmon Run Apartments - Updates / Questions
RE:
Karen Bennett
Tami Merriman
Karen Bennett
EX
/O=CITYOFYELM/OU=FIRST ADMINISTRATIVE GROUP/CN=RECIPIENTS/CN=TAMI
Salmon Run Apartments - Updates / Questions
EX
/O=CITYOFYELM/OU=FIRST ADMINISTRATIVE GROUP/CN=RECIPIENTS/CN=KARENB
EX
/O=CITYOFYELM/OU=FIRST ADMINISTRATIVE GROUP/CN=RECIPIENTS/CN=KARENB
Tami Merriman
EX
/O=CITYOFYELM/OU=FIRST ADMINISTRATIVE GROUP/CN=RECIPIENTS/CN=TAMI
Karen Bennett; Rod Butler; timberriverdev@hotmail.com; Mark King; Chuck Lie; Arnold, Tom; Matlack, Rebecca; cschepper@terra-associates.com; Amy Head
Heimbigner, Chad
Salmon Run Apartments - Updates / Questions
Chad
The stormwater system proposed for this development will be reviewed by
our peer review engineer. That peer reviewer will provide guidance to us
on what is acceptable for approving your civil plans.
Tami Merriman
Associate Planner
City of Yelm
105 Yelm Ave. W
Yelm, WA 98597
360.458.8496
tamim@ci.yelm.wa.us <mailto:tamim@ci.yelm.wa.us>
From: Heimbigner, Chad [mailto:Heimbigner@coffman.com]
Sent: Tuesday, May 10, 2011 1:49 PM
To: Tami Merriman
Cc: Karen Bennett; Rod Butler; timberriverdev@hotmail.com; Mark King;
Chuck Lie; Arnold, Tom; Matlack, Rebecca;
cschepper@terra-associates.com; Amy Head
Subject: RE: Salmon Run Apartments - Updates / Questions
Good afternoon Tami.
Thank you for your feedback noted below. We haven't made any changes to
the site plan layout since our previous submittal. Our understanding is
that the setback criteria provided in the 2005 DOE Manual (SSC-1) are
provided as guidance (not requirements). Based on the email you
previously sent dated November 1, 2010, we understand the City has
allowed the 20 foot setback to be reduced to 10 feet. This early input
from the City regarding the allowable 10 foot setback was instrumental
to the layout of the proposed site components, buildings, and storm
water management improvements for the Salmon Run development. We will
obtain input from the geotechnical engineer (Terra Associates) regarding
the 10 foot setback as part of their overall analysis of the Salmon Run
site and their determination of the project meeting the appropriate Site
Suitability Criteria. If the geotechnical engineer determines the 10
foot setback is acceptable based on their analysis, we understand the
City will support this same setback based on our reasons noted above.
Please let me know if you have any comments or questions. Thank you.
Chad
Chad Heimbigner, P.E., LEED AP
Senior Civil Engineer
Coffman Engineers, Inc.
p 509.328.2994 | f 509.328.2999 www.coffman.com
<http://www.coffman.com/>
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________________________________
From: Tami Merriman [mailto:tamim@ci.yelm.wa.us]
Sent: Monday, May 09, 2011 4:57 PM
To: Heimbigner, Chad
Cc: Karen Bennett; Rod Butler; timberriverdev@hotmail.com; Mark King;
Chuck Lie; Arnold, Tom; Matlack, Rebecca;
cschepper@terra-associates.com; Amy Head
Subject: RE: Salmon Run Apartments - Updates / Questions
Chad
I am not an engineer, and without knowing what changes have occurred in
your site plan, I would defer your question back to our peer review
engineer.
The way I believe it works is the 92 DOE manual allows us to reduce the
20-foot setback under certain circumstances, but I could not tell you
the circumstances.
Tami Merriman
Associate Planner
City of Yelm
105 Yelm Ave. W
Yelm, WA 98597
360.458.8496
tamim@ci.yelm.wa.us <mailto:tamim@ci.yelm.wa.us>
From: Heimbigner, Chad [mailto:Heimbigner@coffman.com]
Sent: Monday, May 09, 2011 3:50 PM
To: Tami Merriman
Cc: Karen Bennett; Rod Butler; timberriverdev@hotmail.com; Mark King;
Chuck Lie; Arnold, Tom; Matlack, Rebecca;
cschepper@terra-associates.com; Amy Head
Subject: RE: Salmon Run Apartments - Updates / Questions
Good afternoon Tami.
Have you had a chance to review my email below? At your convenience,
can you please provide me with an update or an approximate timeframe of
when you'll be able to respond to our request? Thank you.
I appreciate your help.
Chad
Chad Heimbigner, P.E., LEED AP
Senior Civil Engineer
Coffman Engineers, Inc.
p 509.328.2994 | f 509.328.2999 www.coffman.com
<http://www.coffman.com/>
LASTING creativity | results | relationships
Please consider the environment before printing this email.
________________________________
From: Heimbigner, Chad
Sent: Wednesday, May 04, 2011 9:26 AM
To: Amy Head; Tami Merriman
Cc: karenb@ci.yelm.wa.us; Rod Butler; timberriverdev@hotmail.com; Mark
King; Chuck Lie; Arnold, Tom; Matlack, Rebecca;
cschepper@terra-associates.com
Subject: RE: Salmon Run Apartments - Updates / Questions
Thank you for your input Amy.
Tami - Can you please clarify the setback requirement for the City?
Based on the attached email, our understanding is that the 10 foot
setback applies to structures as well as property lines based on the
statement, "the 10 foot setback that we require includes structures".
This input was critical to our layout of all of the site and building
improvements.
I look forward to receiving your input regarding the setback and if you
have any additional comments regarding our updates / questions noted
below. Thank you.
Chad
Chad Heimbigner, P.E., LEED AP
Senior Civil Engineer
Coffman Engineers, Inc.
p 509.328.2994 | f 509.328.2999 www.coffman.com
<http://www.coffman.com/>
LASTING creativity | results | relationships
Please consider the environment before printing this email.
________________________________
From: Amy Head [mailto:amy@sheacarrjewell.com]
Sent: Wednesday, May 04, 2011 9:16 AM
To: Heimbigner, Chad; Tami Merriman
Cc: karenb@ci.yelm.wa.us; Rod Butler; timberriverdev@hotmail.com; Mark
King; Chuck Lie; Arnold, Tom; Matlack, Rebecca;
cschepper@terra-associates.com
Subject: RE: Salmon Run Apartments - Updates / Questions
Contech StormFilters are allowable for treatment.
As far as the setback, I believe the 10 foot setback the City discussed
is from the property line. The infiltration setback is a different
thing and is out of the DOE manual. This is a setback from buildings
not property lines. The setback is to prevent and undermining of
building foundations due to stormwater infiltration in the immediate
vicinity.
Amy Head, PE, LEED AP
Associate Principal
From: Heimbigner, Chad [mailto:Heimbigner@coffman.com]
Sent: Wednesday, May 04, 2011 9:08 AM
To: amy@sheacarrjewell.com; Tami Merriman
Cc: karenb@ci.yelm.wa.us; Rod Butler; timberriverdev@hotmail.com; Mark
King; Chuck Lie; Arnold, Tom; Matlack, Rebecca;
cschepper@terra-associates.com
Subject: Salmon Run Apartments - Updates / Questions
Good morning Amy and Tami.
I have some updates and questions regarding the Salmon Run Apartment
project (10720 Vancil Road Southeast). Can one of you please provide me
with some input?
* In response to your initial comments, we requested the
geotechnical engineer conduct some additional testing at the subject
site. During the supplemental geotechnical explorations, groundwater
was encountered at an elevation of approximately 341.50. Test pits that
were excavated to an elevation of approximately 339.00 a year ago didn't
have any seepage. According to the geotechnical engineer, last year at
the time of test pit excavation, the rainfall for the water year to date
was about 2.5 inches more than normal. This year during the recent
explorations, the rainfall to date is about 6 inches more than normal
for the water year. We anticipate this is contributing to the elevated
groundwater level. It appears the most feasible option for utilizing
infiltration facilities for the subject site is utilizing StormFilter
units (see attached) for treating storm water runoff, with discharge to
shallow, subsurface infiltration galleries. We would not utilize swales
for treating storm water. The galleries would be similar to those
previously proposed, with the exception of using more piping (to allow
for more temporary, subsurface storage volume), having a shallower drain
rock depth (3 foot depth for drain rock, rather than 5 feet as
previously proposed), and a shallower excavation (bottom of gallery
would be installed at elevation 344.50 or higher, allowing for 3 feet of
separation from the recently encountered groundwater). We would still
have the infiltration galleries located in the areas previously shown,
with some of the galleries also expanding into the limits of the parking
area more. The geotechnical engineer is currently conducting an
analysis to determine if the revised storm water management system we
are proposing meets the Site Suitability Criteria for the subject site?
If the geotechnical engineer determines the proposed improvements meet
the Site Suitability Criteria, will the City allow a separation of 3
feet as noted in SSC-5? Is the use of StormFilter units acceptable for
treatment of storm water prior to disposal to shallow infiltration
galleries?
* We have a question regarding the following comment from the
letter dated February 25, 2011: Site suitability Criteria 1 (SSC-1
Setback Criteria) - the infiltration facilities shall be set back at
least 20 feet downslope of a building foundation and 100 feet upslope.
Most of the proposed infiltration systems do not meet this requirement.
We understand the setback criteria are provided as guidance. Based on
an email from Tami Merriman (City of Yelm) dated November 1, 2010, we
understand the City has allowed the 20 foot setback to be reduced to 10
feet. Please let us know if our understanding is correct and 10 feet is
acceptable.
I look forward to receiving your input. Please let me know if you have
any comments or questions. Thank you. I appreciate your help.
Chad
Chad Heimbigner, P.E., LEED AP
Senior Civil Engineer
Coffman Engineers, Inc.
p 509.328.2994 | f 509.328.2999 www.coffman.com
<http://www.coffman.com/>
LASTING creativity | results | relationships
Please consider the environment before printing this email.
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RE%3A Salmon Run Apartments - Updates ? Questions-6.EML
Karen Bennett
12.0
Heimbigner, Chad
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Heimbigner, Chad
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Heimbigner, Chad
Karen Bennett
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Rod Butler
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