1 – Introduction Presentation - This power point consists of 12 frames, the purpose of which are to establish the justification for and general focus of the septic tank drainfield site suitability and evaluation workshop. Reports results of studies in Montana identifying principal causes of drainfield failure – related to soil properties and site assessments.
1 - Introduction Narrative – frame by frame narration accompanying Introduction Presentation power point.
2 – Drainfield Function Presentation – A brief (7-frame) presentation addressing the functioning of septic systems – primarily with attention to the function of the drain field. Topics addressed in a cursory manner include: 1) what goes into the drain field; 2) how does the drain field properly function; and 3) what causes the drain field to fail.
2 - Drainfield Function Narrative - frame by frame narration accompanying Drainfield Function Presentation.
3 - Basics of Wastewater Treatment Presentation – A 12-frame presentation which goes through the biological and chemical processes occurring within septic tank x drainfields and addressing attenuation primarily of organic materials, nitrogen, and phosphorus. Attention is given to the connectivity between properly functioning drain fields, soil properties and nitrogen and phosphorus attenuation/treatment. Presentation addresses BOD, total suspended solids, nitrification, and denitrification. Excerpted from: http://www.barnstablecountyhealth.org/AlternativeWebpage/Basics/Basics.htm.
3 - Basics of Wastewater Treatment Narrative – A frame by frame narration accompanying Basics of Wastewater Treatment Presentation. Source and complete document available at: http://www.barnstablecountyhealth.org/AlternativeWebpage/Basics/Basics.htm. Used with permission.
4 – Introduction to Soils Presentation - This 22-frame training sessions is about soil assessments, in the context of septic tank and on-site drain field site assessment. The presentation begins with an overview of some key concepts about soil, specifically as these concepts relate to septic tank drain fields. Explained are pedons, soil horizons, soil profiles and series, soil colors, and the factors and processes of soil formation.
4 - Introduction to Soils Narrative - A frame by frame narration accompanying Introduction to Soils Presentation.
5 – Soil Color Presentation This power point provides an introduction to the subject of soil physical properties, followed by an in-depth focus on soil color. In-depth information is provided on soil color as an indicator of drainage, redoximorphic features, gleying, waterlogging, and soil formation and development. The focus of the presentation is on soil color – as an indicator and diagnostic tool. Key concepts are supported by visuals and examples.
5 - Soil Color Narrative - A frame by frame narration accompanying Soil Color Presentation.
6 – Soil Texture and Structure Presentation – This 19-frame power point provides in-depth information about soil texture, particle size analyses, and soil structure. The focus of the presentation is on soil texture and structure – as indicators, as diagnostics, as factors affecting water movement in soil. Use of a textural triangle is also explained. Visual examples of structure and texture, texturing by feel are included. It is essential that evaluators have a working knowledge of the soil properties most directly associated with the hydraulic characteristics. Those properties are: texture, structure, porosity, water transmission and storage capacity.
6 - Soil Texture and Structure Narrative - A frame by frame narration accompanying the Soil Texture and Structure Presentation.
7 – Coarse Fragment Reaction Presentation – This 10-frame power point provides in-depth information about soil coarse fragments and soil reaction, i.e., acidity or alkalinity.
7 - Coarse Fragment Reaction Narrative - A frame by frame narration accompanying the Coarse Fragment and Reaction Presentation.
8 – Landscapes and Site Evaluation Presentation – This 28-frame power point addresses key points of landscape assessments, land forms, and topographic influences on septic drain field assessments and suitability. Some of the topics addressed are toposequences, aspect, slope.
8 - Landscapes and Site Evaluation Narrative - A frame by frame narration accompanying the Landscapes and Site Evaluation Presentation.
9 – Percolation Presentation - This power point consists of 8 frames, the purpose of which are to explain percolation, permeability, infiltration, followed by specific examples and details of measurement. The primary focus is on use of texture, structure, and the textural triangle to approximate or estimate percolation and permeability ranges. Permeability ranges for 12 textural classes identified on the textural triangle are given, based on two published sources of information.
9 - Percolation Narrative - A frame by frame narration accompanying the Percolation Presentation.
10 – Web Soil Survey Presentation – This 30-frame power point presentation provides a step-by-step walk through of resources available via the NRCS Web Soil Survey tool. An example is given of use of the search materials, report preparations, and comparison with images available from Google Earth. Discussion also addresses information available via Web Soil Survey and distinctions between percolation and drainage class.
10 - Web Soil Survey Narrative - A frame by frame narration accompanying the Web Soil Survey Presentation.
Soil Structure Images Presentation - Selected images of soil profiles, with emphasis on soil structure, textural discontinuities, redoximorphic features. Images sourced primarily from MSU LRES teaching lab monoliths
Soil Structure Images Narrative – A post-evaluation questionnaire specific to images presented in the Soil Structure Images Presentation.
