HomeMy WebLinkAboutOWTS Installation Observations 12.28.16
December 28, 2016 Project No. C1205
Betty Collins
bettyjocollins@hotmail.com
Onsite Wastewater Treatment System (OWTS) Installation Observations
5352 CR 233
Garfield County, Colorado
Permit SEPT-10-16-4468
Betty,
ALL SERVICE septic, LLC observed the installation of the onsite wastewater treatment system (OW TS)
on November 15, 2016 for the subject property. Deidrich Construction installed the system.
The existing septic tank and soil treatment area (STA) were abandoned in place. The septic tank was
pumped, collapsed and remaining void filled with on-site materials.
We verified the new septic tank is 60-feet from the existing well, which is located to the east of the
existing residence.
The new system installation included a 1250-gallon, two-compartment Precast Concepts® concrete
septic tank with an Orenco® ProPak pumping system and PF5005 pump in the second compartment.
There is filter in the second compartment of the septic tank. This must be cleaned annually, or as
needed. The control panel for the pumping system was installed within line of sight of the septic tank.
Effluent is pressure dosed through a 1.5-inch diameter pump line from the septic tank to an Orenco®
model 6402 automatic distributing valve (ADV), which was installed at the high point in an insulated riser,
and accessible is from grade.
The STA consists of two beds, each with 4 rows of 8 ‘ARC ADS’ chambers, for a total of 64 chambers
and 960 square feet of infiltrative area. The chambers were installed at native grade in order to
maintain the required 4-foot separation to high seasonal groundwater. Sand filter material was
added to level the bed, where needed. Chamber rows in each bed are connected with level, 1.5-inch
diameter manifolds.
Effluent is pressure dosed to 1.5-inch diameter laterals, which are suspended 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 placed 3-feet on center. Each lateral
ends in a 90 degree ell facing up with a ball valve for flushing. Inspection ports were placed at the
corners of each bed.
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.
View of septic tank Precast Concepts
Sewer line from house Pump line to ADV
ADV (plumbing out not yet installed)
east bed
west bed (slightly higher elevation)
Looking east
Note sand added to maintain level bed
832‐R‐13‐002