RATIONALES
LDP - (ANSWER)Land Developing Projects - altering landscape for projects such as agriculture or
housing ect.
NPDES - (ANSWER)National Pollutant Discharge Elimination System
- section of the CWA (Clean Water Act) to permit stormwater discharges associated w industrial
activities PER permit
CWA Penalty Types - (ANSWER)Adminstrative
Class I. Neglegent
Class II. Knowlingly = greater fines
What documents are required on site? - (ANSWER)- SWPPP
- CGP
- Site Map
- Drawings and Key
- All inspection reports
- Any amendments to SWPPP
Who is the "operator"? Also the LRP. - (ANSWER)Usually the OWNER of the site, not the contractor,
unless authorized by the owner to general contractor to have day-to-day operational control!
When do you need permit coverage? - (ANSWER)Required from start to end of project. "End" being
the final vegetative/non-vegetative (concrete) stabilization occuring.
For any project one acre or greater.
,Large Land Development - (ANSWER)-strips off all existing vegetation a.k.a site carving
-usually on hillsides and steep slopes
-installation of untilities that tear up large areas of land
Vertical Projects - (ANSWER)- Homebuilding, smaller residence construction projects
-usually multiple subcontractors
-requires lots of housekeeping = mass choas
Bix Box Projects - (ANSWER)-commercial buildings
-mass grading and mass choas
-highly visible w/ fairly large footprint
Linear Projects - (ANSWER)-roadways, utilities, and stream corridors
-long narrow sites and mass choas
-limites site access and continually changing (high activity)
What is erosion? - (ANSWER)The process by which soil particle get displaced by the act of wind of
water.
What are the three types of Wind Erosion? - (ANSWER)1. Creep - causes sand dunes
<10%
-large particle that roll across a terrain
2. Saltation - bouncing particles that DISLODGE more particles, then fall back down
~50-80%
- stay relatively close to ground
3. Suspesion - suspended way up into the atmosphere
, ~ 5-25%
-light weight soil particles dusted in the air
Which method of wind erosion moves the most soil? - (ANSWER)Saltation
What are the types of water erosion? - (ANSWER)Raindrop erosion
Sheet erosion
Rill and Gully erosion
Stream and Channel erosion
Shoreline erosion - by the act of waves
Landslides - difficult to prevent
Raindrop Erosion - (ANSWER)dislodges many soil particles
Sheet Erosion - (ANSWER)stripping away a thin sheet of topsoil from the surface of the land
-flat lands where water flows ontop due to runoff
-can transport large amounts of soil
-causes additional erosion
Rill and Gully Erosion - (ANSWER)If the runoff is allowed to concentrate and gain velocity or energy, it
will cut rills and gullies as it detaches more soil particles
Rills: < or = to 3in. deep
Gullies: Three of more rills that convered to greater than 3in. deep
What factors impact rainfall erosion? - (ANSWER)-Climate events
-Soil erodibility
-The length of flow over a distance/ How Far