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CPESC EXAMS 2024 WITH ACTUAL CORRECT QUESTIONS AND VERIFIED DETAILED ANSWERS BY EXPERTS |FREQUENTLY TESTED QUESTIONS AND SOLUTIONS |ALREADY GRADED A+ | NEWEST |LATEST UPDATE |GUARANTEED PASS$12.49
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1 | P a g e CPESC EXAMS 2024 WITH ACTUAL CORRECT QUEST IONS AND VERIF IED DETAILED ANSWERS BY EXPERTS |FREQUENTLY TESTED QUESTIONS AND SOLUTIONS |ALREADY GRADED A+ | NEWEST |LATEST UPDATE |GUARANTEED PASS What are the 5 factors that influence erosion? Soil erodibility, topography, vegetative cover, season, climate (rainfall) What influences soil erodibility? Soil texture, structure and % of OM How does vegetative cover influence erodibility? Top growth reduces raindrop impact, filters sediment and slows down runoff velocity; roots hold mass particles together How can you decrease erodibility in relation to topography? Increase slope roughness What climate characteristics affect erodibility? Rainfall intensity, duration and frequency Why does frequent rai nfall increase erodibility? The soil becomes saturated and no more water can infiltrate which increases runoff volume Why is erosion potential high in the spring if it rains? Water can't infiltrate the frozen subsoil which increases runoff volume What are some ways urban development impacts erosion hazards? Changes hydrology (GW flow, drainage), disturbs large amounts of soil, removes plant cover BMP considerations for clearing and grubbing? 2 | P a g e Preserve existing vegetation; clear only what is required for imme diate construction activity BMP considerations for mass grading? Create principle basins, traps, barriers, diversions and channels; temporary stabilization; manage concentrated runon and runoff (water bars) BMP considerations for site access & off -hauling? Stabilize with gravel and temporary vegetation; limit ingress and egress points What are the 3 stages of inlet construction? Pipe installation, inlet construction, inlet backfill BMP considerations of channel construction? Monitor weather, install grade c ontrols, stabilize streambanks early; consider time of year (weather) to start construction (phasing) BMP considerations of final stabilization? Immediately apply temp or permanent stabilization of disturbed areas; don't allow surface area to dry out for a few days before seeding (affects germination) BMP considerations of vertical construction? Protect inlets; modify plan to show new conditions an d updated measures What would have to be updated as construction progressed on the SWPPP? Installation and removal dates, changes in plan designs, and changes in BMPs When are outlet protectors used? Examples? To control runoff; wattles, check dams (energy dissipaters) or thick/matted veg, riprap (ground cover) What is the RUSLE equation? A = R K L S C P What are the units for A in RUSLE? Ton/ha/year What kind of erosion does RUSLE cover? Sheet and rill erosion only Define soil erodibility The ease with which soil is detached by splash during rainfall Why is sediment yield different from erosion rate?
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