Lichen sclerosus and lichen planus are fairly common, non cancerous skin conditions. They can affect different parts of the body, but commonly affect the vulva. When they affect the skin of the vulva, theyâre known as vulval LS or LP.
A gap-graded soil is a soil that has an excess or deficiency of certain particle sizes or a soil that has at least one particle size missing. An example of a gap-graded soil is one in which sand of the No. 10 and No. 40 sizes are missing, and all the other sizes are present.
Concrete sand is a coarse to very coarse sand with particle size ranges from 0.30 to 2.00 millimeters. It is a good choice for improving drainage in soil or installing a new septic system. Use it to improve drainage of clay soil by adding a 1 inch layer to the surface and working it in to a depth of at least 6 inches.