Home made or "site built" septic tanks, often using dry-stacked concrete blocks or even stone can collapse, a fatal hazard if someone falls in. The septic tank shown in the PHOTO at the top of this page had a concrete cover but when the cover was removed we found that the tank was ...
ofsoil), it may still be polluted by dissolved chemicals and bybacteriaandviruses. Sources of chemical contaminants include poorly designed or poorly maintained subsurface sewage-disposal systems (e.g.,septic tanks), industrial wastes disposed of in improperly lined or unlined landfills orlagoons,...
waste disposal, the collection, processing, andrecyclingordepositionof the waste materials of human society. Waste is classified by source andcomposition. Broadly speaking, waste materials are either liquid or solid in form, and their components may be either hazardous or inert in their effects onhe...
C40 concrete is a strong commercial grade concrete mix most commonly used in the construction of structural and support beams, footings and foundations, roadworks, and in agricultural use. Ideal for: Foundations for septic tanks, paving HGV parks and agricultural yards. Strength: 40 Newton/28 day...