Mostly because the slop that drips off cars get washed into the nearest waterway.
On a sloped parking lot
Rain that is not absorbed by soil is Runoff. It causes pollution by carrying loose surface soil, fertilizers and other chemicals into our natural waterways.
The Clean Water Act passed in 1972. This is a federal law about controlling the pollution of the nation's surface waters like streams, rivers and other waterways.
Quite quickly. Assuming that the parking lot was not toxic to life. Dust and vegetable debris will soon blow over the surface, and provide a toehold for mosses and algae. And from there, the whole succession cycle would continue. At Chernobyl, there are trees growing inside the buildings already.
The problem of surface soil erosion associated only during surface application method.Soil erosion are practically absent in this method.Because pipes are used to supply water to the fields.
You can still get free parking on the suns surface.
Concrete
The only time you "need" to use the parking brake is when you are parking on any kind of incline. However, even if parking on flat surface, it is good to put the parking brake on when parked.
The surface quality is called texture.
NO!
If you have just "scratched the surface" of a problem you have not understood it and got to the bottom of what the problem is.
Texture.
Generally 1 in 300 is sufficient for parking space, but it can be variable depending upon the location/conditions of site
On a sloped parking lot
It all depends on the material.
If paint is chipping, and has not been scraped. The quality of the surface that makes paint stick is "tooth". The quality of the paint that makes it sick is adhesion.
In a good-quality surface soil mineral matter and organic matter make up about half the total volume.