HomeMy WebLinkAboutpitkin.eh.273504300008 (2009)Pithin
Environmenlat Health and Natural Resources
ONSITE WASTEWATER TREATMENT SYSTEM (OWTS)
NO PERMIT REQUIRED FORM
Date:
Owner(s) Name(s): NoYjr► u ti k
Project Name:
Address of Property: '9' - ! s 0-'-l)
Building Permit Number: ODg2- 1-nos-
Parcel
-noS_Parcel ID # 73 5 .b q -3 —17L7-- 0o
Description of Project: 1706 sel 44,
0.314 ,6cc
Remodel does not increase the bedroom/potential bedroom count
Existing OWTS is sized for this project dakd l/l2/d 9.
Proposed buildings do not need an OWTS (i.e., garage, shed, barn, etc.)
Project is not located in the area of the existing OWTS
No OWTS Construction Permit is required for this project. No further review
is required by Environmental Health & Natural Resources.
FOOD SERVICE FACILITY
This facility contains a retail food establishment. Environmental Health & Natural Resources has
reviewed and approved the plans.
Office Use Only:
Annroved bv: / rA/) 1.(4 0 ZX -k-'-o Date: 2
0405 Castle Creek Road, Suite 10 Aspen, Colorado 81611
Phone: (970) 920-5070 Fax: (970) 920-5077 www.aspenpitkin.com/ehnr
o�35- 043-00-oos
0
CHURCH OWC, LLC
Onsite Wastewater Consultants
January 12, 2009
William H. Baker Construction
ATTN: Bill Baker
210 AABC, Suite MM
Aspen, Colorado 81611
Subject: OWS Analysis for Finishing Upper Level
Crown Kunkler Residence
2298 Owl Creek Road
Pitkin County, Colorado
Job No. 9085W
Mr. Baker,
As requested, CHURCH Onsite Wastewater Consultants, LLC (COWC) performed a site visit to
observe the onsite wastewater system (OWS) at the subject site. Church & Associates Inc. prepared
OWS design documents under Job No. 9085W dated August 28, 2002 which was revised July 22,
2003 and December 3, 2004. The system was installed in 2005.
The OWS design was for on a 5 -bedroom residence of greater than 6000 SF. The design was based
on an average design flow of 1560 -gallons per day (GPD) and 2730 -GPD for peak loading, using a
1.75 peaking factor. The design resulted in the installation of 1766.4 SF of infiltrative area.
The upper level of the residence is being finished with three rooms, a sitting room, yoga room, and
exercise room. Due to the proximity of the sitting room to a 3/4 bathroom, the sitting room will be
considered a bedroom. The OWS design for the 6 -bedroom residence, under the current OWTS
regulations would be based on an average design flow of 1200 -GPD and 2250 -GPD peak loading
using a 1.5 peaking factor. The required infiltrative area is 1895 SF. The new area is a difference
of 119 SF greater from what is installed and what would be required with the additional bedroom
under the current OWTS regulation.
A site visit was performed on December 16, 2008. At the time of the site visit, the elapsed time
meter (ETM) for the pump discharging effluent to the mounded drainfield was read and recorded.
The ETM reading was 133.67 hours. The residence has been using an average of 416 GPD for the
last three years. An ETM reading of 136.39 hours was taken again on January 6, 2009. The
residence has been using 389 GPD for the 3 week period over the holidays. As actual flows over the
last 3 years represent 25% of the average design flow, COWC believes the existing system is
adequate to serve the residence including the finishing of the upper level.
COWC believes that there will not be an increase in wastewater generation resulting from the
finishing of the upper level of the residence. If there was an increase in the wastewater generation,
the wastewater flow would still be less than the original design flow and no additional infiltrative
9590 West 14th Avenue Ste. 100, Lakewood, CO 80215 Voice 720-898-3434 FAX: 720-898-3455
OWS Analysis, 9085W
January 12, 2009, Page 2
area would be necessary. This variance from the regulations should not be assumed to be a
precedent for sizing OWTS in Pitkin County in the future.
If there are questions, please call.
Sincerely,
CHURCH Onsite Wastewater Consultants, LLC
Kathryn Kangas
Principal
EOC/kek
2 copies sent
G
E
Copy to: Pitkin County EH/NR, ATTN: Carla Ostberg, 0405 Castle Creek Rd, Ste 10, Aspen, CO
81611
P.O. BOX 527, Wheat Ridge, CO 80034-0567 Voice: 720-898-3434 FAX: 720-898-3455
W'd -MlOi
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