FMPLT_PLANS_11x17_121611.pdf

SOLICITATION: W912ES-12-B-0004

BEST MANAGEMENT PRACTICES

02-04-94

FOR EROSION AND SEDIMENT CONTROL

JIVL

STRAW BAIL BARRIERS SHOULD BE INSTALLED PRIOR TO MAJOR SOIL

DISTURBANCE IN THE DRAINAGE AREA. THE BARRIERS SHOULD BE

PLACED PERPENDICULAR TO THE FLOW, ACROSS THE BOTTOM OF A

SLOPE OR MINOR DRAINAGEWAY. IT CAN ALSO BE USED AT THE

PERIMETER OF THE WORK AREA. THE BAILS MUST BE FIRMLY STAKED

AND PLACED END TO END. THERE CAN BE NO GAPS BETWEEN THE BAILS.

SURFACE ROUGHENING, USING HEAVY EQUIPMENT TO CREATE GROOVES

IN THE SOIL PERPENDICULAR TO THE DIRECTION OF WATER FLOW, IS

APPROPRIATE FOR SLOPES OF 3:1 OR FLATTER. IT SHOULD BE DONE AS

SOON AS POSSIBLE AFTER THE VEGETATION HAS BEEN REMOVED FROM

THE SLOPE. SLOPES STEEPER THAN 3:1 BUT LESS THAN 2:1 SHOULD

BE GROOVED WITH DISKS OR SPRING HARROWS. STEEPER SLOPES

SHOULD BE STAIR-STEPPED.

HORIZONTAL SLOPE GRADING

DRAINAGEWAY RUNOFF CONTROL

stgip000.dgn

STORM SEWER INLET CONTROL

FLO

W

F

LO

W

FLO

W

F

LO

W

STORM SEWER PIPE OUTLET ENERGY DISSIPATION

BA

B

SECTION

A

SECTION

PLAN PLAN

FILTER

BLANKET

FILTER

BLANKET

PIPE OUTLET TO WELL-

DEFINED CHANNEL

PIPE OUTLET TO FLAT AREA -

NO WELL DEFINED CHANNEL

TEMPORARY SEDIMENT TRAP

A

A

PLAN

6’

6’

L=2W

SECTION

D

W FLOW

GEOTEXTILE FABRIC

FLOW

TEMPORARY FENCING

COMPLETELY AROUND TRAP

RIPRAP

RIPRAP

D = 3’ MIN., 6’ MAX.

TEMPORARY SEDIMENT TRAPS CAN BE CONSTRUCTED EITHER BY

EXCAVATION OR BY PLACING AN EMBANKMENT ACROSS A DRAINAGEWAY.

THE SEDIMENT BASIN SHOULD BE DESIGNED WITH SUFFICIENT DETENTION

TIME FOR SEDIMENT TO SETTLE OUT OF THE STORM WATER.

5’ MIN. LENGTH POST

AT 8’ MAX. SPACING

WIRE MESH REINFORCEMENT

GEOTEXTILE FABRIC

FABRIC ANCHORAGE TRENCH,

BACKFILL WITH TAMPED

NATURAL SOIL

EXTEND WIRE MESH

INTO TRENCH

OVERLAP GEOTEXTILE

FABRIC 6" AND FASTEN

AT 2’ INTERVALS

M I N

6"

MIN.2

M I N

P O

S T

E M

B E

D M

E N

T

I N

W I R

S

H

FLOW

SILT FENCE SHOULD BE INSTALLED PRIOR TO MAJOR SOIL DISTURBANCE

IN THE DRAINAGE AREA. SILT FENCE SHOULD BE PLACED AT THE

BOTTOM OF A SLOPE OR MINOR DRAINAGEWAY, PERPENDICULAR TO

THE DIRECTION OF WATER FLOW. IT CAN ALSO BE PLACED AT THE

PERIMETER OF THE WORK AREA.

PERIMETER SEDIMENT CONTROL

STABILIZED VEHICLE ENTRANCE

PAVED

ROAD

6"

36’ MIN. 4’ 10’

2%

2"-3" WASHED STONE

6"

ALL STORM SEWER PIPE OUTLETS SHALL HAVE RIPRAP APRONS, DESIGNED

TO PREVENT SCOUR.

BLOCK AND GRAVEL INLET PROTECTION

WI. D.O.T. #57 WASHED STONE

INLET OPENING TO BE

AT LEAST 32" SQUARE

32"

32"

GRAVEL TO BE NO

CLOSER THAN 3"

FROM TOP OF BLOCK.

PLACE 2 COURSES OF

BLOCK AROUND INLET.

PLACE AT LEAST ONE BLOCK ON ITS SIDE

IN EACH BOTTOM ROW FOR DRAINAGE.

2H:

1V

STORM DRAIN INLETS SHALL BE PROTECTED FROM SEDIMENT LADEN

RUNOFF UNTIL SOIL IN THE DRAINAGE AREA IS STABILIZED. SILT FENCE

(SEE PERIMETER SEDIMENT CONTROL), STRAW BAIL BARRIERS (SEE

DRAINAGEWAY RUNOFF CONTROL) OR CONCRETE BLOCK WITH GRAVEL

FILTER (SEE BLOCK AND GRAVEL INLET PROTECTION) MAY BE USED.

STABILIZED VEHICLE ENTRANCE(S) SHALL BE MAINTAINED IN A CONDITION

TO PREVENT MUD OR SEDIMENT FROM LEAVING THE SITE. SHOULD MUD

BE TRACKED OR WASHED ONTO THE PAVED ROAD, IT MUST BE REMOVED

IMMEDIATELY. ENTRANCE SHALL BE SLOPED TO DIVERT RUNOFF TO A

SEDIMENT TRAP OR CONTROLLED STORM SEWER INLET.

STORM DRAIN INLETS CAN BE PROTECTED FROM SEDIMENT LADEN

RUNOFF USING A DRY BLOCK AND GRAVEL FILTER. LAY CONCRETE

BLOCKS ON FIRM, SMOOTH FOUNDATION EXCAVATED BELOW STORM

DRAIN TOP. PLACE AT LEAST ONE CONCRETE BLOCK ON ITS SIDE

IN EACH BOTTOM ROW. PLACE WIRE MESH WITH �" OPENINGS

OVER ALL BLOCK OPENINGS USED FOR DRAINAGE.

STAKED AND ENTRENCHED

STRAW BALE

SEDIMENT LADEN

RUNOFF

BINDING WIRE

OR TWINE

FILTERED

RUNOFF

TWO 2" X 2" WOOD STAKES OR

REINFORCING BARS IN EACH BALE

AND EMBEDDED IN THE GROUND

10" MINIMUM.

Z2 - 22

REFERENCE DRAWING

NPDES/EROSION CONTROL

STANDARD PLATES - DESIGN/CIVIL

DISTRICT OFFICE ST. PAUL, MINNESOTA

AE APPROVING OFFICIAL:

CAD FILE NAME: SHT

OFDATE:

P E D

DRAWING NUMBER:

SYMBOL DESCRIPTION DATE APPROVAL

DESIGNED:

CHECKED:

DRAWN:

DESIGNED:

CHECKED:

SOL. NO:

P E H

St. Paul District

A

B C D E F G

EDCBA