Exam (elaborations)
CISEC Exam (3).
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- Be The Business Challenge C954
Exam of 6 pages for the course Be the business challenge C954 at Be the business challenge C954 (CISEC Exam (3).)
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CISEC ExamStormwater control design goal - ANS-Minimize the discharge of pollutants in
stormwater.
SW control design factors - ANS-Expected amount and frequency of precipitation, soil
type and range, flow from impervious surfaces, slopes, and BMPs to control flow rates.
Erosion and sediment control requirements - ANS-Provide and maintain natural buffers
and/or equivalent erosion and sediment controls for discharges to any receiving waters
located within 50 feet of the site's earth disturbances.
Directing stormwater - ANS-Towards vegetated areas, maximize infiltration and filtering
to minimize pollutant discharges unless unadvisable due to geological factors (GW
contamination, karst geography, etc.)
Installing perimeter controls - ANS-Must be installed upgradient of any natural buffers,
extend on the contour of a slope with ends curved upwards.
Maintaining perimeter controls - ANS-Remove sediment before it has accumulated to
1/2 the height of the control, and if it is ineffective following a precipitation event: extend
or repair controls.
Minimizing sediment track-out - ANS-Restricting vehicle use to designated points and
installing tracking controls like wheel washing, rumble plates, and 3-inch gravel.
Managing stockpiles - ANS-Away from inlets or concentrated flow areas, install a
sediment barrier along downgradient areas, and if unused for 14+ days provide cover.
Minimizing dust - ANS-On areas of exposed soil, apply water or other suppression
techniques.
Soil health factors - ANS-Minimize steep slope disturbances, preserve native topsoil
unless infeasible, and minimize soil compaction.
Inlet protection - ANS-Install protection measures that remove sediment from
discharges prior to entry (not required for sites with a sediment trap system); and clean
or replace protections as sediment accumulates.
, Chemical use and storage - ANS-Must be appropriately suited for soil type and treated
discharges. Must be stored in leak-proof containers under storm-resistant covers and
surrounded by secondary containment.
Exposed soil - ANS-Must be stabilized and resistant to erosion.
Timeline:
5 acres or less--begin stabilizing where activity stops permanently or for more than 14
days immediately, no more than 14 days.
More than 5 acres--begin stabilizing where activity stops permanently or for more than
14 days immediately, no more than 7 days.
Turbidity monitoring--dewatering - ANS-Must collect a sample from dewatering
discharge each day a discharge occurs, and after it has been treated.
Turbidity benchmark - ANS-50 NTUs
Inspection frequency - ANS-At least once every 7 days; or once every 14 days AND
within 24 hours of a storm event that produces 0.25 inches or more precipitation in a 24
hour period.
General inspection requirements - ANS-- Check whether all stormwater controls are
properly installed and working as intended.
- Check for the presence of conditions that could lead to spills, leaks, or other
accumulations of pollutants in the site.
- Identify any locations where new or modified stormwater controls are necessary.
- Check for visual sedimentation and erosion at points of discharge.
Corrective action - ANS-Triggered when:
- A stormwater control needs a significant repair or replacement.
- A stormwater control necessary to comply with the permit was improperly or never
installed.
- Discharges are not meeting water quality standards.
- Contamination is evident.
- Etc.
Parts of SWPPP - ANS-Stormwater team, nature of construction activities, site map,
non-stormwater discharges, description of stormwater controls, procedures for
inspection maintenance and corrective action, procedures for turbidity monitoring from
dewatering, compliance with other requirements (endangered species, historic sites,
EPA water stuff, etc.).
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