Term
| Construction site erosion factors (4): |
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Definition
-rainfall energy
-soil erodibility
-site topography
-surface cover |
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Term
| NEPA mandates that all federal agencies must complete a(n) ______ or ______ on their activities. |
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Definition
| environmental assessment / environmental impact statement |
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Term
| CWA (1972) classifies sediment releases as ________. |
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Definition
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Term
| Construction activities must comply with state regulations and programs addressing ________. |
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Definition
| non-point source pollution |
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Term
| In the CWA, Federal Enforcement is Section ___ and NPDES is Section ___. |
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Definition
Federal Enforcement: 309
NPDES: 402 |
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Term
| MS4 stands for _____________. |
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Definition
| Municipal Separate Stormwater Sewer System |
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Term
| A notice of intent (NoI) includes (4): |
|
Definition
-BMPs
-measurable goals
-implementation schedule
-responsible persons |
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Term
| Non-numeric limitations of the ELG apply to sites greater than or equal to _____. |
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Definition
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Term
| Principles of NPDES qualifying programs (5): |
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Definition
1. good site planning
2. minimize soil movement
3. capture sediment
4. good housekeeping
5. mitigation of post-construction SW discharges |
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Term
| State NPDES programs include (4): |
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Definition
-SWPPPs
-inspections by site operators
-E&SC
-post-construction soil stabilization |
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Term
| General requirements for Construction General Permits (3): |
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Definition
|
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Term
|
Definition
| -potential SW pollution sources -lists and describes E&S controls -operator procedures for CGP compliance |
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Term
| Design objectives of SWPPP (7): |
|
Definition
-stablilize site ASAP
- protect channels & slopes
-reduce impervious surfaces
-control site perimeter
-protect receiving waters
-follow PP measures
-minimize duration & area of exposed soils |
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Term
| ADEM qualifying storm (inches): |
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Definition
|
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Term
| ADEM water quality based effluent limitations: less than ____ below background |
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Definition
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Term
| ADEM maintenance requirements for major repairs (days): |
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Definition
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Term
| Additional protections applies within ____ feet of a surface water. |
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Definition
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Term
| E/S control design requirements are for a __yr,__hr storm event |
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Definition
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Term
| If within 50ft of a surface water, must provide a natural buffer; otherwise achieve an equivalent ____________. |
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Definition
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Term
| For perimeter controls, sediment must be removed prior to ____ of the above ground height. |
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Definition
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Term
| ADEM stabilization requirements after earth-disturbing activities cease (days): |
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Definition
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|
Term
ADEM vegetative cover density:
EPA vegetative cover density: |
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Definition
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Term
| Sites discharging into Tier 2/2.5/3 waters must stabilize soils within __ days. |
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Definition
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Term
| Sediment basins must be able to store for a _______ storm event. |
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Definition
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Term
| Site inspections must be once a month or after a qualifying event of ___ inches. |
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Definition
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|
Term
| If substantial work is needed, ADEM requires work completed in _ days. |
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Definition
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Term
| SWPPP modification and corrective action must take place in _ days. |
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Definition
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|
Term
| NOT is submitted after (3): |
|
Definition
-all earth disturbing activities completed
-uniform perennial veg. cover established
-permanent stabilization measures used |
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Term
| Groups who use SWPPPs (4): |
|
Definition
-owner
-designer
-subcontractors
-inspectors |
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Term
| Records must be retained for ___ years from the termination date. |
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Definition
|
|
Term
| Before starting work (3): |
|
Definition
- submit NOI
- obtain NPDES permit
- make a SWPPP |
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|
Term
| Hydrological cycle components (5) |
|
Definition
-precipitation
-infiltration
-runoff
-evaporation/transpiration
-GW & stream flow |
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|
Term
| Typical USGS topo map scale is _:_____ |
|
Definition
|
|
Term
| Two main factors affecting peak rate of runoff: |
|
Definition
| - duration & intensity of a storm |
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Term
| Storms are described by IDF curves, which stands for: |
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Definition
| intensity, duration, & frequency |
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Term
| Time of concentration (Tc) is time for runoff to travel to a pt of interest from _______. |
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Definition
| the hydraulically most distant point |
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Term
| When channels are straightened, Tc ______. |
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Definition
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|
Term
| When overland flow is diverted, Tc ______. |
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Definition
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|
Term
| Design storm duration must equal ___. |
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Definition
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|
Term
| 50% of annual erosion potential in Alabama ranges from __ to __ (inches). |
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Definition
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|
Term
| What size storm events are used in E&SC plans? |
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Definition
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|
Term
| Rainfall Distribution Type for most of Alabama (Roman Numeral): |
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Definition
|
|
Term
| Two types of reaches (WinTR-55): |
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Definition
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Term
| Rills are generally less than __ inches deep. |
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Definition
|
|
Term
| Different erosion types (6): |
|
Definition
-splash
-sheet flow
-rill
-gully
-stream banks
-shoreline |
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|
Term
| The most important rain parameter in erosion is: |
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Definition
|
|
Term
| The most important soil parameter in erosion is: |
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Definition
|
|
Term
| The RUSLE equation can be used to predict rill erosion, but not _________. |
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Definition
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|
Term
| K factor is dependent upon (3): |
|
Definition
| texture, structure, & permeability |
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Term
| Erosion rate is directly proportional to _____&_____ of cover. |
|
Definition
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