HomeMy WebLinkAboutFinal OWTS Installation Observation 12.31.14
December 31, 2014 Project No. C1095
Lee Price
lprice@sopris.net
Onsite Wastewater Treatment System (OWTS) Installation Observations
1175 CR 241
Garfield County, Colorado
Garfield County Permit No. SEPT-9-14-3383
Lee,
ALL SERVICE septic, LLC observed the installation of the onsite wastewater treatment system (OWTS)
on October 24, 2014 for the subject property. Miles Rippy Excavating, Inc. installed the system.
The existing septic tank and soil treatment area (STA) were properly abandoned in-place. A new 1500-
gallon, two-compartment concrete Valley Precast septic tank was installed with an Orenco® Biotube
Pump Vault including an Orenco® PF3005 pump and effluent filter in the second compartment. This
effluent filter must be cleaned annually, or as needed. The control panel for the pump is located
within line of sight of the septic tank, mounted on the side of the residence.
Groundwater was encountered at approximately 3-feet below grade. For purposes of the OWTS design,
high seasonal groundwater was estimated at 2-feet below grade. Eighteen-inches of native topsoil was
removed from the 19’ x 62’ basal area of the new soil treatment area (STA) and replaced with the
approved fill material. Installation of the STA consisted of 2-feet of fill material, followed above by 10’ x
53’ of concrete sand, 2-feet deep. A 3:1 (horizontal:vertical) slope was maintained.
Effluent is pressure dosed to the sand filter through 1.25-inch Schedule 40 pipe, with a minimum 1%
grade for proper drain back into the septic tank. Two 1.25-inch laterals with 1/8-inch orifice holes facing
down, 3-feet on center, are connected via a level manifold. Laterals are surrounded by washed coarse
screened gravel. Each lateral ends in a 90 degree elbow facing up with a ball valve for flushing.
Geotextile fabric was placed over the pipe and gravel, followed by a minimum of one foot of topsoil.
Native vegetation will be planted over the mound to minimize erosion.
Photographs documenting the installation, provided by the installer, have been enclosed.
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 OW TS 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, P.E.
832‐R‐13‐002