VA DEQ ESC INSPECTOR EXAM
QUESTIONS AND ANSWERS
VESCP0-0ans✔Virginia0Erosion0and0Sediment0Control0Program
-0Administered0by0counties/cities0(must),0towns0(may)
-0MUST0BE0APPROVED
Minimum0Standard010-0ans✔Stabilization
permanent0or0temporary0soil0stabilization0shall0be0applied0to0denuded0areas0within0se
ven0days0after0final0grade0is0reached0on0any0portion0of0the0site;0temporary0soil0stabiliz
ation0shall0be0applied0within0seven0days0to0denuded0areas0that0may0not0be0at0final0gr
ade0but0will0remain0dormant0for0longer0than0140days;0permanent0stabilization0shall0be0
applied0to0areas0that0are0to0be0left0dormant0for0more0than0one0year
Site0NOT0at0Final0Grade0-0ans✔-0stabilize0in0140days
-0temporarily0seed
-0mulch
-0permanently0stabilize0if0dormant0>010year
Site0at0Final0Grade0-0ans✔-0stabilize0in070days0(recommended0immediately)
-0permanently0or0temporarily0seed0and0mulch
-0mulch/matting/straw
Minimum0Standard020-0ans✔Stock0Piles,0Waste0and0Borrow0Areas
during0construction,0soil0stock0piles0and0borrow0areas0shall0be0stabilized0or0protected0
with0sediment0trapping0measures
mulch0prevents0erosion0by0protecting0the0surface0from0raindrop0impact0and0silt0fence0i
ntercepts0and0detains0from0disturbed0areas
Minimum0Standard030-0ans✔Permanent0Vegetation
permanent0vegetation0cover0shall0be0established0on0denuded0areas0not0otherwise0per
manently0stabilized0(permanent0vegetation0shall0not0be0considered0established0until0a0
,ground0cover0is0achieved0that0is0uniform,0mature0enough0to0survive,0and0will0inhibit0er
osion0*there0is0no0%0associated0with0this*)0
reduce0erosion0and0decrease0sediment0yield0from0disturbed0area
this0is0the0standard0used0to0verify0that0a0site0is0ready0for0release0of0bonds0or0surety
Minimum0Standard040-0ans✔First-Step0Measures
Sediment0basins0and0traps,0perimeter0dikes,0sediment0barriers0and0other0measures0in
tended0to0trap0sediment0shall0be0constructed0as0a0first0step0in0any0land-
disturbing0activity0and0shall0be0made0functional0before0upslope0land0disturbance0takes
0place
a0certain0amount0of0initial0land0disturbance0may0be0required0to0provide0access0for0eq
uipment0to0install0the0perimeter0controls,0but0site0clearing0and0grading0should0be0kept0
to0a0minimum0until0the0perimeter0controls0are0in0place
intercepts0and0detains0small0amounts0of0sediment0from0disturbed0areas0during0constr
uction0operation0to0prevent0sediment0from0leaving0the0site0and0decrease0velocity0of0s
heet0flows0and0low-to-moderate0level0channel0flow
Perimeter0Controls0-
0ans✔assures0that0sediment0does0not0leave0the0perimeter0of0the0land-
disturbing0area0once0site0clearing,0grading,0and0construction0commences
Examples:0silt0fences,0sediment0traps,0sediment0basins,0construction0entrance,0tempor
ary0diversions,0diversions
Minimum0Standard050-0ans✔Earthen0Structure0Stabilization
stabilization0measures0shall0be0applied0to0earthen0structures0such0as0dams,0dikes,0an
d0diversions0immediately0after0installation
reduce0erosion0and0sedimentation0and0reduce0damage0from0sediment0and0runoff0to0d
ownstream0or0off-site0areas
Minimum0Standard060-0ans✔Traps0and0Basins
sediment0traps0and0basins0shall0be0designed0and0constructed0based0upon0the0total0dr
ainage0area0(not0just0disturbed0area)0to0be0served0by0the0trap0or0basin
Sediment0Traps0-
0ans✔minimum0storage0capacity0shall0be01340cubic0yards0per0acre0of0drainage0area0
and0shall0only0control0drainage0areas0less0than030acres
, *stone0outlet0=0trap*
Sediment0Basins0-
0ans✔surface0runoff0from0disturbed0areas0that0is0comprised0of0flow0from0drainage0are
as0greater0than0or0equal0to030acres0shall0be0controlled0by0a0basin;0minimum0storage0c
apacity0of0a0sediment0basin0shall0be01340cubic0yards0per0acre0of0drainage0area;0the0o
utfall0system0shall,0at0a0minimum,0maintain0the0structural0integrity0of0the0basin0during0
a025-year0storm0of024-
hour0duration;0runoff0coefficients0used0in0runoff0calculations0shall0correspond0to0a0bar
e0earth0condition0or0those0conditions0expected0to0exist0while0the0sediment0basin0is0util
ized.
Sediment0Trapping0Devises0-
0ans✔1.0place0near0the0lowest0drainage0points0of0a0project
2.0install0as0a0first-step0measure0[MS-4]
3.0stabilize0immediately0[MS-5]
4.0must0include0outlet0protection0for0basins0[MS-11]
Minimum0Standard070-0ans✔Cut0and0Fill0Slopes
roughening0the0surface0of0the0slope0decreases0runoff,0lowers0the0velocity0runoff,0incre
ases0water0retention,0and0leads0to0better0seed0germination
slopes0that0are0found0to0be0eroding0excessively0within0on0year0of0permanent0stabilizat
ion0shall0be0provided0with0additional0slop0stabilizing0measures0until0the0problem0is0cor
rected
Minimum0Standard080-0ans✔Concentrated0Runoff
shall0not0flow0down0cut0or0fill0slopes0unless0contained0within0an0adequate0temporary0
or0permanent0channel,0flume0or0slope0drain0structure
outlets0of0these0drains0need0outlet0protection0to0prevent0erosion0from0the0concentrate
d0flow
size0of0pipe0depends0on0drainage0area
temporarily0conduct0concentrated0stormwater0runoff0safely0down0the0face0of0a0cut0or0fi
ll0slope0without0causing0erosion0on0or0below0the0slope
Minimum0Standard090-0ans✔Water0Seeps
QUESTIONS AND ANSWERS
VESCP0-0ans✔Virginia0Erosion0and0Sediment0Control0Program
-0Administered0by0counties/cities0(must),0towns0(may)
-0MUST0BE0APPROVED
Minimum0Standard010-0ans✔Stabilization
permanent0or0temporary0soil0stabilization0shall0be0applied0to0denuded0areas0within0se
ven0days0after0final0grade0is0reached0on0any0portion0of0the0site;0temporary0soil0stabiliz
ation0shall0be0applied0within0seven0days0to0denuded0areas0that0may0not0be0at0final0gr
ade0but0will0remain0dormant0for0longer0than0140days;0permanent0stabilization0shall0be0
applied0to0areas0that0are0to0be0left0dormant0for0more0than0one0year
Site0NOT0at0Final0Grade0-0ans✔-0stabilize0in0140days
-0temporarily0seed
-0mulch
-0permanently0stabilize0if0dormant0>010year
Site0at0Final0Grade0-0ans✔-0stabilize0in070days0(recommended0immediately)
-0permanently0or0temporarily0seed0and0mulch
-0mulch/matting/straw
Minimum0Standard020-0ans✔Stock0Piles,0Waste0and0Borrow0Areas
during0construction,0soil0stock0piles0and0borrow0areas0shall0be0stabilized0or0protected0
with0sediment0trapping0measures
mulch0prevents0erosion0by0protecting0the0surface0from0raindrop0impact0and0silt0fence0i
ntercepts0and0detains0from0disturbed0areas
Minimum0Standard030-0ans✔Permanent0Vegetation
permanent0vegetation0cover0shall0be0established0on0denuded0areas0not0otherwise0per
manently0stabilized0(permanent0vegetation0shall0not0be0considered0established0until0a0
,ground0cover0is0achieved0that0is0uniform,0mature0enough0to0survive,0and0will0inhibit0er
osion0*there0is0no0%0associated0with0this*)0
reduce0erosion0and0decrease0sediment0yield0from0disturbed0area
this0is0the0standard0used0to0verify0that0a0site0is0ready0for0release0of0bonds0or0surety
Minimum0Standard040-0ans✔First-Step0Measures
Sediment0basins0and0traps,0perimeter0dikes,0sediment0barriers0and0other0measures0in
tended0to0trap0sediment0shall0be0constructed0as0a0first0step0in0any0land-
disturbing0activity0and0shall0be0made0functional0before0upslope0land0disturbance0takes
0place
a0certain0amount0of0initial0land0disturbance0may0be0required0to0provide0access0for0eq
uipment0to0install0the0perimeter0controls,0but0site0clearing0and0grading0should0be0kept0
to0a0minimum0until0the0perimeter0controls0are0in0place
intercepts0and0detains0small0amounts0of0sediment0from0disturbed0areas0during0constr
uction0operation0to0prevent0sediment0from0leaving0the0site0and0decrease0velocity0of0s
heet0flows0and0low-to-moderate0level0channel0flow
Perimeter0Controls0-
0ans✔assures0that0sediment0does0not0leave0the0perimeter0of0the0land-
disturbing0area0once0site0clearing,0grading,0and0construction0commences
Examples:0silt0fences,0sediment0traps,0sediment0basins,0construction0entrance,0tempor
ary0diversions,0diversions
Minimum0Standard050-0ans✔Earthen0Structure0Stabilization
stabilization0measures0shall0be0applied0to0earthen0structures0such0as0dams,0dikes,0an
d0diversions0immediately0after0installation
reduce0erosion0and0sedimentation0and0reduce0damage0from0sediment0and0runoff0to0d
ownstream0or0off-site0areas
Minimum0Standard060-0ans✔Traps0and0Basins
sediment0traps0and0basins0shall0be0designed0and0constructed0based0upon0the0total0dr
ainage0area0(not0just0disturbed0area)0to0be0served0by0the0trap0or0basin
Sediment0Traps0-
0ans✔minimum0storage0capacity0shall0be01340cubic0yards0per0acre0of0drainage0area0
and0shall0only0control0drainage0areas0less0than030acres
, *stone0outlet0=0trap*
Sediment0Basins0-
0ans✔surface0runoff0from0disturbed0areas0that0is0comprised0of0flow0from0drainage0are
as0greater0than0or0equal0to030acres0shall0be0controlled0by0a0basin;0minimum0storage0c
apacity0of0a0sediment0basin0shall0be01340cubic0yards0per0acre0of0drainage0area;0the0o
utfall0system0shall,0at0a0minimum,0maintain0the0structural0integrity0of0the0basin0during0
a025-year0storm0of024-
hour0duration;0runoff0coefficients0used0in0runoff0calculations0shall0correspond0to0a0bar
e0earth0condition0or0those0conditions0expected0to0exist0while0the0sediment0basin0is0util
ized.
Sediment0Trapping0Devises0-
0ans✔1.0place0near0the0lowest0drainage0points0of0a0project
2.0install0as0a0first-step0measure0[MS-4]
3.0stabilize0immediately0[MS-5]
4.0must0include0outlet0protection0for0basins0[MS-11]
Minimum0Standard070-0ans✔Cut0and0Fill0Slopes
roughening0the0surface0of0the0slope0decreases0runoff,0lowers0the0velocity0runoff,0incre
ases0water0retention,0and0leads0to0better0seed0germination
slopes0that0are0found0to0be0eroding0excessively0within0on0year0of0permanent0stabilizat
ion0shall0be0provided0with0additional0slop0stabilizing0measures0until0the0problem0is0cor
rected
Minimum0Standard080-0ans✔Concentrated0Runoff
shall0not0flow0down0cut0or0fill0slopes0unless0contained0within0an0adequate0temporary0
or0permanent0channel,0flume0or0slope0drain0structure
outlets0of0these0drains0need0outlet0protection0to0prevent0erosion0from0the0concentrate
d0flow
size0of0pipe0depends0on0drainage0area
temporarily0conduct0concentrated0stormwater0runoff0safely0down0the0face0of0a0cut0or0fi
ll0slope0without0causing0erosion0on0or0below0the0slope
Minimum0Standard090-0ans✔Water0Seeps
