VA DEQ ESC INSPECTOR EXAM

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VA DEQ ESC INSPECTOR EXAM

UPDATED ACTUAL EXAM WITH

CORRECT SOLUTIONS.

VESCP - correct answer- Virginia Erosion and Sediment Control Program

• Administered by counties/cities (must), towns (may)

- MUST BE APPROVED

Minimum Standard 1 - correct answer- Stabilization

permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade but will remain dormant for longer than 14 days; permanent stabilization shall be applied to areas that are to be left dormant for more than one year

Site NOT at Final Grade - correct answer- - stabilize in 14 days

• temporarily seed
• mulch
• permanently stabilize if dormant > 1 year 1 / 4

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Site at Final Grade - correct answer- - stabilize in 7 days (recommended immediately)

• permanently or temporarily seed and mulch
• mulch/matting/straw

Minimum Standard 2 - correct answer- Stock Piles, Waste and Borrow Areas

during construction, soil stock piles and borrow areas shall be stabilized or protected with sediment trapping measures

mulch prevents erosion by protecting the surface from raindrop impact and silt fence intercepts and detains from disturbed areas

Minimum Standard 3 - correct answer- Permanent Vegetation

permanent vegetation cover shall be established on denuded areas not otherwise permanently stabilized (permanent vegetation shall not be considered established until a ground cover is achieved that is uniform, mature enough to survive, and will inhibit erosion *there is no % associated with this*)

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reduce erosion and decrease sediment yield from disturbed area

this is the standard used to verify that a site is ready for release of bonds or surety

Minimum Standard 4 - correct answer- First-Step Measures

Sediment basins and traps, perimeter dikes, sediment barriers and other measures intended to trap sediment shall be constructed as a first step in any land-disturbing activity and shall be made functional before upslope land disturbance takes place

a certain amount of initial land disturbance may be required to provide access for equipment to install the perimeter controls, but site clearing and grading should be kept to a minimum until the perimeter controls are in place

intercepts and detains small amounts of sediment from disturbed areas during construction operation to prevent sediment from leaving the site and decrease velocity of sheet flows and low-to-moderate level channel flow

Perimeter Controls - correct answer- assures that sediment does not leave the perimeter of the land-disturbing area once site clearing, grading, and construction commences 3 / 4

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Examples: silt fences, sediment traps, sediment basins,

construction entrance, temporary diversions, diversions

Minimum Standard 5 - correct answer- Earthen Structure Stabilization

stabilization measures shall be applied to earthen structures such as dams, dikes, and diversions immediately after installation

reduce erosion and sedimentation and reduce damage from sediment and runoff to downstream or off-site areas

Minimum Standard 6 - correct answer- Traps and Basins

sediment traps and basins shall be designed and constructed based upon the total drainage area (not just disturbed area) to be served by the trap or basin

Sediment Traps - correct answer- minimum storage capacity shall be 134 cubic yards per acre of drainage area and shall only control drainage areas less than 3 acres

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