HomeMy WebLinkAboutOWTS Installation Observations 09.18.19
September 18, 2019 Project No. C1410
Katie Jones
jonesy.kate81@gmail.com
Onsite Wastewater Treatment System (OWTS) Installation Observations
7004 CR 312
Garfield County, Colorado
Permit Number SEPT-07-18-5377
Katie,
ALL SERVICE septic, LLC observed the installation of the onsite wastewater treatment system (OWTS)
on April 12 and May 6, 2019 for the subject property. Hammerhead Operations installed the system.
The house location changed from what was originally provided to us at the time of the initial design. No
updated plan was provided to this office prior to construction of the OWTS or for our record drawing. The
location of the residence on our record drawing has been approximated.
At the time of our visit on April 12, 2019, we discovered the location of the soil treatment area (STA)
encroached on the 100-foot setback to the well located on the adjacent property to the west. We worked
with the installer to identify an alternate location for the STA.
We inspected the installation of the OWTS on May 6, 2019 after relocation of the STA. The system
installation included a 2000-gallon, two-compartment Valley Precast concrete septic tank with an
Orenco® ProPak pumping system and PF3005 pump in the second compartment of the septic tank. The
floats were set to dose approximately 80 gallons each pump cycle, allowing approximate 8 gallons of
drain back.
Risers were installed on the septic tank manholes to bring access to grade. The control panel is
mounted on the west side of the residence. Valley Precast personnel out of Buena Vista performed start
up on the pumping system on September 12, 2019. We recommend making an appointment with our
office to review the system components together.
A 1.5-inch diameter Schedule 40 pump line was installed from the pump to an Orenco® automatic
distributing valve (ADV), model 6606. The ADV was placed a high point in the system in an insulated riser
with access from grade.
Effluent is pressure dosed through 1.5-inch diameter pipes to six trenches, each with 16 ‘Quick 4’
Standard Plus Infiltrator® chambers, for a total of 96 chambers and 1152 square feet of infiltrative area.
There was at least 6-feet of undisturbed soil between each trench.
Effluent is pressure dosed to 1.5-inch diameter laterals, which were hung with zip ties from the underside
of the chambers. Laterals have 5/32-inch diameter orifices facing up, with the exception of the first and
last holes facing down for drainage. The orifices were drilled 3-feet on center. Each lateral must end in a
90 degree ell facing up with a ball valve for flushing. Valves may be placed in a valve box, accessible
from grade, for access. Inspection ports have been placed at the beginning and end of each trench. Ports
may be cut to grade and covered with a valve box for access.
We verified the setback from the STA to the well to the southwest at 120-feet. We also verified the
distance from the STA to Garfield Creek was greater than 50-feet.
The ditch located south of the development on the property over-flowed during construction, making the
management of water moving toward the house difficult. While this ditch is greater than the required 50-
feet from the OWTS components, management of the ditch is imperative. Overflow of the ditch that
results in running water or ground saturation in the area of the OWTS could lead to malfunctioning of the
OWTS.
The OWTS was generally installed according to specifications. This observation is not a guarantee of
workmanship and/or parts and materials. ALL SERVICE septic, LLC should be notified if changes are
made to the OWTS in the future. Any additional OWTS construction must be according to the county
regulations.
LIMITS:
Observations are limited to components that are visible at the time of the inspection. The installer must
have documented and demonstrated knowledge of the requirements and regulations of the county in
which they are working. The quality of the installation is dependent of the expertise of the installer, soil
type, and weather conditions.
Please call with questions.
Sincerely,
ALL SERVICE septic, LLC Reviewed By:
Carla Ostberg, MPH, REHS Richard H. Petz,
Photos taken April 11, 2019
Septic tank / inlet tee
9/18/19
Sewer line to septic tank
Photos taken May 6, 2019
Septic tank with risers pump line from tank to ADV
ADV trenches
trenches
Cleanout near house
PERMIT
KEEP AVAILABLE AT PROJECT SITE
Project Address ____________________________________________ Parcel No. ________________________
Subdivision _________________________________ Lot _______ Section-Township-Range ____________
Owner Name ______________________________________________ Owner Phone _____________________
Owner Mailing Address _______________________________________________________________________
Contractor(s) ______________________________________________ Contractor Phone _________________
Work Description:
Valuation _________________________________
Square Feet _______________________________
IMPORTANT: APPLICATION IS HEREBY MADE TO THE BUILDING OFFICIAL FOR A PERMIT SUBJECT TO THE CONDITIONS AND
RESTRICTIONS SET FORTH ON THIS APPLICATION. PLEASE NOTE: Final inspection of the work authorized by this permit is required. A
Certificate of Occupancy must be obtained prior to use and occupancy of new buildings and structures. A Building Permit becomes null and
void if the authorized work is not commenced within 180 days of the date of issuance and if work is suspended or abandoned for a period of
180 days after commencement.
Permit Type ____________________________________
Work Classification _____________________________
Issue Date ___________ Expiration Date ___________
PERMIT #
Community Development Department
108 8th Street, Suite 401
Glenwood Springs, CO 81601
Phone (970) 945-8212
3/10/2019
30-06-90
Septic - New
303-941-0740
ORR-SMITH SUBDIVISION EXEMPTION
PO Box 2183, Vail, CO 81658
New septic for residential home
SEPT-07-18-5377
218330402003
New
9/11/2018
Katherine Jones
7004 CR 312
832‐R‐13‐002