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Percolation test results table

Percolation test results sheet 2026

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The document outlines the procedures and requirements for conducting percolation tests for septic systems in LaSalle County, Illinois. It specifies that tests cannot be performed in frozen ground or recently filled areas, and details the necessary steps for digging test holes, preparing them, and measuring water percolation rates. Additionally, it includes a worksheet for recording test results and certifying the absence of limiting layers in the soil.

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Click ‘Get Form’ to open the percolation test results sheet in the editor.
Begin by entering the property owner's name and address in the designated fields at the top of the form. This information is crucial for identifying the location of the tests.
Fill in details about the subdivision, lot number, township, and section. These fields help categorize your property within local regulations.
Record the state water level in inches, followed by documenting time intervals and water levels for each of the four test holes. Ensure you measure accurately at 30-minute intervals as specified.
Complete the certification section by signing and dating it after confirming that no limiting layer exists within five feet of the ground surface.
Finally, review all entries for accuracy before saving or printing your report using our platform's convenient features.

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2013	4.7 Satisfied (43 Votes)

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How to read percolation test results?

If the Percolation Value (Vp) exceeds 140 seconds, the soil is not suitable for drain fields. If the value is between 100 and 140 seconds (about 7-10 hours to fall 250mm), under drains are desirable. should be given to an alternative system, which may be more economic.