The minimum moisture content, expressed as a percentage of the oven dry soil weight, at which the soil will begin to flow when subjected to a small shearing force. The _____ is determined using a standard _____ device.

(a)  

A soil that displays a good representation of all particle sizes. For instance, (a)   sand will contain a fairly even distribution of coarse, medium, and fine sand.

A number that indicates the portion of rainwater that will be discharged by a particular surface.

(a)  

Incapable of being penetrated. 

(a)  

Entrance or means to enter.

(a)  

A pond that collects storm water, temporarily stores, and then slowly releases the water into the municipal storm water system.

(a)  

The maximum angle of a stable slope of a granular material determined by friction, cohesion, and the shapes of the soil particles.

(a)  

The period of time over which rain is measured. For example in the case of annual rainfall measurements, the (a)   is one year.

Exit or a way out.

(a)  

The minimum moisture content at which the soil can be rolled into a thread one-eighth of an inch in diameter without crumbling and is determined by trial and error.

(a)  

Soil in which 50 percent or more, by weight, of the soil is retained on the Number 200 sieve. In other words, 50 percent or more of the sample is composed of sand and/or gravel.

(a)  

A permanent shallow pool of diverted rainwater that incorporates wetland plants. Pollutants are removed through settling and biological activity.

(a)  

A selected storm event, described in terms of the probability of occurring once within a given number of years, for which drainage or flood control improvements are designed and built.

(a)  

The difference between the liquid limit and the plastic limit.

(a)  

A soil that does not contain a good representation of all particle sizes. A (a)   soil may contain a narrow range of particle sizes (uniformly graded) or may not contain one or more ranges of particle sizes (gap graded).

The length of time, on average, over which an event (or an event of greater magnitude) is expected to occur not more than one time. For example, a Category 3 hurricane may have a (a)   of 100 years, which means that a Category 3 hurricane (or stronger) is expected to occur no more than one time, on average, within one hundred years.

A pond that collects storm water, temporarily stores, and then slowly releases the water into the municipal storm water system.

(a)  

A permanent on-site pond used to manage storm water in which pollutants are allowed to settle out or be removed by biological activity.

(a)  

A storm water management approach that uses green space, native landscaping, and techniques that mimic a site’s pre-development water cycle.

(a)