How does soil testing for septic systems work?
There are two parts to soil testing for a septic system. A deep pit test is performed to determine any boundary conditions such as groundwater, bedrock, or an impermeable surface. A percolation test is performed to determine the percolation rate of the soil. This, combined with the daily water usage, is used to determine the required capacity of the septic system. During this site visit, measurements will be obtained to ensure that the septic system can fit on the site and meet all applicable setback requirements.
A backhoe or excavator is necessary to perform the deep pit test. It is the responsibility of the client to arrange for a machine and operator to be on-site for the test. Either the client will hire a contractor to bring and operate the machine, or the client will rent a machine and operate it themselves.
For sites located in Albany, Columbia, Rensselaer, Schenectady, or Ulster counties, a county representative must be on-site to witness the tests. This requires that an application form and fee be submitted to the county. Please find the form for your county below. We can assist in filling out the form and scheduling the appointment with the county.
If there is a water source on-site, such as a hose bib, please ensure that it is usable for the test. If water is not available on-site, please notify the office.
What if I already had the necessary soil testing performed?
Please let us know, and provide the results so we can review them to determine if any additional testing is required. If additional testing is not required, then we may still need to perform a site visit to take measurements.
Do you deduct the site visit fee from the drawing fee?
No, the fee for the site visit is separate from the fee/cost for the drawings.
How do you determine the cost of the drawings?
The fee for design of a septic system is determined by the type of system required (conventional or non-conventional), and/or the size and complexity of the site and system.
Hourly Rates:
Perc test fee is $800
What forms of payment do you accept?
For non-conventional systems, is a percolation test required on the fill once it is placed?
Percolation testing of fill is required in some towns or counties, and we recommend it in areas where it is not required. Please call the office to schedule.
What is an as-built inspection?
An as-built inspection is performed to certify that the system was installed in accordance with the issued construction drawings and all applicable codes. Upon substantial completion of the system, but prior to backfilling, call the office to schedule the inspection.
For systems installed in counties that require a county representative to witness the initial percolation test, typically they will also witness the as-built inspection.
All tank lids and distribution boxes must be visible. All 4 corners of the absorption field, as well as one complete lateral must also be visible. All system components will be inspected to ensure quality, and compliance with the issued construction drawings, and all applicable codes.
Triangulated measurements of all system components will be obtained.
Should the system pass inspection, as-built drawings, and a certification letter will be provided.
