Soil Observation Log
Soil Texture Chart
Profile Hole Criteria
- Acceptable location of a pump or dosing siphon.
- Design of unlined sand filters - revised November 2015.
- Design using chambers.
- Infiltrative surface.
- Replacement/added soils.
- Required Setback from OWTS to a Well or Cistern.
- Vertical Isolation and Media Depth Chart and Explanation.
2012 Mound Component Manual for Private OWTS (provided as reference, county regulations should be followed)
Siphon Sizing Worksheet provided by OSI, Inc.
CPOW Guidance Document for NDDS-Final Revised September, 2016
Soil Hand Texturing
NDDS Installation Video
CPOW Logo for Member Use