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New Concepts in Soil Survey Interpretations for On‐Site Disposal of Septic Tank Effluent
Author(s) -
Bouma J.
Publication year - 1974
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1974.03615995003800060029x
Subject(s) - extrapolation , environmental science , soil survey , soil water , effluent , septic tank , soil science , environmental engineering , mathematics , statistics
Soil survey interpretations for on‐site disposal of septic tank effluent are made in terms of soil limitations using existing technology. New technology, based on a detailed analysis of liquid movement and associated purification, can be used to overcome severe and very severe limitations and to reduce slight and moderate limitations. Experimental data obtained and technology derived from single experimental innovative disposal systems are relevant only if extrapolations can be made to other soils shown to be identical. Three procedures of extrapolation are discussed: (i) detailed on‐site spot checks of key properties; (ii) on‐site taxonomic soil classifications and (iii) taxonomic soil classifications at the experimental site followed by extrapolation to mapping units named after the same soil series. Largely unknown variability of key properties for liquid waste disposal in soil series or in mapping units may reduce the practical value of the latter two procedures but potential advantages are (i) reductions of expensive on‐site inspections and (ii) use of soil maps for showing potential changes in land‐use patterns following introduction of innovative technology. This approach emphasizes soil potential rather than soil limitations.