W 3', 6', OR 9' O GENERAL NOTES FOR PERMANENT EROSION CONTROL L . F N GALVANIZED STEEL WIRE MESH I SEDIMENT TRAP BASIN M ' 1. USE PERMANENT EROSION CONTROL DEVICES STANDARD . 3 C N { DRAWINGS IN CONJUNCTION WITH THE STANDARD I SPECIFICATIONS FOR HIGHWAY CONSTRUCTION AND THE ITD M ' 3 BEST MANAGEMENT PRACTICES MANUAL. GABIONS GABIONS 2' MIN. TOP WIDTH 2. SEE PLANS FOR SITE DIMENSIONS. 3. THE PLACEMENT OF PERMANENT EROSION CONTROL SACK MEASURES IS SITE SPECIFIC. OBTAIN THE ENGINEER'S GABIONS APPROVAL OF THE PERMANENT EROSION CONTROL MEASURES .

N PRIOR TO INSTALLATION. I C M

' 4. PERMANENT EROSION CONTROL DEVICES ARE INTENDED TO 1' TO 2' 3 SACK GABION LAST MORE THAN 6 MONTHS AND SHOULD BE INTEGRATED THE COMPACTED B B FINAL EROSION CONTROL PLAN.

EMBANKMENT 3' MIN. 3' MIN. N GALVANIZED STEEL O W 3' MIN. 4" MIN. (SEE NOTE NO. 4) I WIRE MESH O T L VARIABLE WIDTH FOR OUTLET C F E .

R WEIR (SEE NOTE NO. 7) A I I F

' D O D 3

MINIMUM DIMENSIONS SHOWN. SITE CONDITIONS . R

WILL DETERMINE ACTUAL DIMENSIONS. N O I

. M Q GABION OUTLET WEIR GABION CHECK DAM S NOTES SECTION C-C 1. OBTAIN APPROPRIATE PERMITS BEFORE EROSION DEVICES ARE PLACED REVET MATTRESS IN STREAMS AND, CHANNELS, OR BOTH. CONSTRUCT SMALL EARTH BERM METAL STAKES DAMS TO SEAL GABION ENDS 2. GABIONS AND REVET MATTRESSES MAY BE USED FOR PERMANENT EROSION CONTROL, TEMPORARY EROSION CONTROL, OR BOTH. GABION OR POSTS (TYP.) 3. THE DISCHARGE THROUGH OR OVER REVET MATTRESSES, GABIONS, OR BOTH SHOULD BE DIRECTED ONTO STABILIZED AREA SUCH AS VEGETATION, RIPRAP, OR BOTH. 4. GABIONS AND REVET MATTRESSES SHOULD BE EMBEDDED A MINIMUM BOTTOM OF OF 4" INTO THE EXISTING GROUND. 4" MIN. (SEE NOTE NO. 4) SACK GABION S SECTION B-B E S 5. ALL SACK GABIONS SHOULD BE SECURED WITH 6' x 3/4" METAL STAKES T R OR 6' STEEL POSTS. A T U M M M D N I 6. ENSURE THAT THE WIDTH OF THE GABION OUTLET WEIR IS MATTRESSES WIDTH 3'. B E M I REVET MATTRESSES WITH GABIONS M " CONSTRUCTED AS SHOWN ON THE PLANS OR AS DIRECTED BY THE MATCH LENGTH WITH E 4 ENGINEER. SACK GABION LENGTH. 7. GABIONS MAY BE USED WITH REVET MATTRESSES TO FORM SEDIMENT REVET MATTRESSES CONTROL DAMS AND SHOULD BE INSTALLED SO THAT THE CHANNEL CAPACITY IS NOT RESTRICTED SHOULD THE DEVICE TOTALLY SILT-UP. CONSTRUCT SMALL EARTH BERM DAMS SACK GABION(S) E REVET MATTRESSES MAY BE USED AS A CHANNEL LINER TO PREVENT TO SEAL GABION ENDS (TYPICAL) OR GABION O P EROSION AND TO INTERCEPT SEDIMENT LADEN RUNOFF. L 9 BASKETS : 1 S " EXISTING GROUND OR FILL 1 . 5 8. 6" REVET MATTRESSES WILL USUALLY PROMOTE VEGETATION FOR SIDE MIN. A X . SLOPES THAT ARE NOT CONTINUALLY SUBMERGED IN WATER. 9" REVET GABION REVET MATTRESS THICKNESS 3' M RIPRAP OR EROSION MATTRESSES MAY BE USED TO LINE LARGE CHANNELS OR STREAMS (6", 9", OR 12") CONTROL GEOTEXTILE WITH GREATER FLOW RATES OR IN SOILS THAT ERODE EASILY. 12" • HEIGHT . REVET MATTRESSES MAY BE USED TO LINE LARGE STREAMS AND ' N 1 OF GABION I

3 2 RIVERS.

M " SECURE MATTRESSES 3 : 1 3 : 1 WITH 6' METAL 9. SECURE REVET MATTRESSES USED FOR SLOPE REVETMENT WITH METAL BOTTOM OF STAKES OR POSTS POSTS OR STAKES TO PREVENT SLIDING OR SHIFTING. REVET MATTRESSES 10. NOT TO SCALE. 6' 6' 3' MIN. TYPICAL SLOPE SECTION SECTION A-A SLOPE REVETMENT

ORIGINAL STORED AT: ITD, O Headquarters R 3311 West State D I G A J I N Boise, Idaho T A E . C L F A E O L S B R E REVISIONS DA STANDARD DRAWING R I B I G SCALES SHOWN I HO U G N IDAHO A I N L E NO. DATE BY NO. DATE BY NO. DATE BY ARE FOR 11" X 17" R A A D T

T ORIGINAL SIGNED BY: LOREN THOMAS R * * PERMANENT EROSION AND STANDARD DRAWING NO. Y L K N MSM A E B 1 02-96 E PRINTS ONLY TRANSPORTATION N S Y Y S M 1 P T HIGHWAYS PROGRAM OVERSIGHT ENGINEER , I G : O R SEDIMENT CONTROL 2 2 10-10 KEH A N R T P 0 CADD FILE NAME: DEPARTMENT A DE 212-10 1 E 3 10-11 KEH 212-10_0213.dgn T ION ORIGINAL SIGNED BY: TOM COLE GABION AND REVET MATTRESS 3 D : 4 01-13 RDL DRAWING DATE: CHIEF ENGINEER JANUARY, 1994 BOISE IDAHO SHEET 1 OF 1