W912HN-22-B-4010_DRAWINGS_VOL1.pdf

PDF 35 MB Posted Aug 10, 2022

Attached to: W912HN22B4010 - Project Number PN95667-Repair Hunter Airfield Infrastructure
Solicitation number: W912HN22B4010
Issued by: Department of the Army Corps of Engineers Engineering District Savannah

About this file

Written by GovTribe AI · Dec 27, 2023

This solicitation provides details for a construction project to repair infrastructure at Hunter Army Airfield in Savannah, Georgia. The U.S. Army Corps of Engineers Savannah District is seeking a firm-fixed price contract for runway, taxiway, and apron reconstruction and repairs. Work includes full depth pavement removal and replacement in portions of the airfield, storm sewer repairs, and will be phased to prevent airfield delays. The project magnitude is estimated between $25-100 million. The performance period is 245 calendar days from notice to proceed. The acquisition is set aside as 100% small business and NAICS code 237310 applies with a size standard of $39.5 million. The solicitation is available on SAM.gov and bids must be submitted electronically through PIEE by September 9, 2022. An organized site visit will be held on August 23 and the points of contact are provided.

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Other files

File	Type	Posted
C.04 - Abstract-Construction - W912HN22B4010 (1).pdf	PDF	Sep 13, 2022
B.08 - Solicitation - W912HN22B4010 - Specifications-AMD3.pdf	PDF	Sep 7, 2022
B.08 - Solicitation - W912HN22B4010 - Amendment 0003.pdf	PDF	Sep 7, 2022
B.08 - Solicitation - W912HN22B4010 - Amendment 0003 - Conformed Copy.pdf	PDF	Sep 7, 2022
B.08 - Solicitation - W912HN22B4010 - Amendment 0002 - Conformed Copy.pdf	PDF	Sep 2, 2022
B.08 - Solicitation - W912HN22B4010 - Specifications-AMD2.pdf	PDF	Sep 2, 2022
B.08 - Solicitation - W912HN22B4010 - Drawings - Volume 3-AMD2.pdf	PDF	Sep 2, 2022
B.08 - Solicitation - W912HN22B4010 - Amendment 0002.pdf	PDF	Sep 2, 2022
B.08 - Solicitation - W912HN22B4010 - Drawings - Volume 2-AMD2.pdf	PDF	Sep 2, 2022
B.08 - Solicitation - W912HN22B4010 - Drawings - Volume 1-AMD2.pdf	PDF	Sep 2, 2022
B.08 - Solicitation AMD 0001 (Conformed) - W912HN22B4010 - PN95667 Repair Airfield infrastructure HAAF GA.pdf	PDF	Aug 31, 2022
Site Visit Minutes Sign in Roster - W912HN22B4010 - HAAF Airfield infrastructure Repair.pdf	PDF	Aug 31, 2022
B.08 - Solicitation AMD 0001 (SF30) - W912HN22B4010 - PN95667 Repair Airfield infrastructure HAAF GA.pdf	PDF	Aug 31, 2022
B.08 W912HN-22-B-4010 Solicitation (95667) 20220810.pdf	PDF	Aug 10, 2022
B.08 Site Visit Map 20220624.pdf	PDF	Aug 10, 2022
B.08 W912HN-22-B-4010_SPECS.pdf	PDF	Aug 10, 2022
W912HN-22-B-4010_DRAWINGS_VOL2.pdf	PDF	Aug 10, 2022
W912HN-22-B-4010_DRAWINGS_VOL3.pdf	PDF	Aug 10, 2022

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CONTRACT NO.:

SOLICITATION NO.: W912HN-22-B-4010

ISSUE DATE: JUNE 2022

HUNTER ARMY AIRFIELD, SAVANNAH, GEORGIA

REPAIR AIRFIELD INFRASTRUCTURE, AIRFIELD STORM SEWER SYSTEM REPAIRS

FY20, PN95667

US Army Corps of Engineers ®

SAVANNAH DISTRICT

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VOLUME 1

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LEGEND:

STORM SEWER

DITCH LINE

SANITARY SEWER

FIRE LINE

WATER LINE

FUEL LINE

COMMUNICATION LINE

ELECTRICAL (PRIMARY)

ELECTRICAL (SECONDARY)

GAS LINE

CONTAMINATION PLUME

MONITORING WELL

STORM JUNCTION

STORM INLET

STORM SEWER ENDWALL

WATER VALVE

FIRE HYDRANT

WATER FITTING

SANITARY MANHOLE

POLE MOUNT LIGHT

FUEL TANK

FUEL PUMP STATION

FUEL HYDRANT FILL POINT

CANOOCHEE LIGHT

CANOOCHEE POLE

GUY WIRE

COMMUNICATION MANHOLE

COMMUNICATION TRANSFORMER BANK PAD MOUNT

COMMUNICATION TRANSFORMER BANK POLE MOUNT

CLEANOUT

WATER METER

UNDERGROUND STORAGE TANK

AIRFIELD LIGHTING

CONTROL POINT

CULVERT PIPE

ESTIMATED QUANTITIES

ITEM DESCRIPTION UNIT QUANTITY REMARKS

CLEAN DEBRIS LF 6535

CIPP LF 22 500

PIPE REPLACEMENT LF 535 RCP SIZES INCLUDE: 30".

CLEAR AND GRUB SY 980

ABBREVIATIONS:

ADR AREA DRAIN ROUND

ADS AREA DRAIN SQUARE

BTTM BOTTOM OF STRUCTURE

G GROUND

HW HEADWALL

IE OR INV INVERT ELEVATION

ME MATCH EXISTING

OUT OUTFALL

P PAVEMENT

RCP REINFORCED CONCRETE PIPE

STMH STORM MANHOLE

SW SIDEWALK

TOP TOP OF STRUCTURE

TP TOP OF PAD

CIPP CURED IN PLACE PIPE

TW TOP OF WALL

BW BOTTOM OF WALL

SAN

LPG

COMM

ESES

XXXX

12.3

FENCE LINE

EXISTING CONTOUR

EXISTING SPOT ELEVATION

BUILDING NUMBER

ITEM TO BE REMOVED

SILT FENCE

INLET PROTECTION

CONTRACTOR STAGING AREA

X X X X X X X X X

Sd1-NS

INDEX OF DRAWINGS

SHEET NUMBER SHEET TITLE

G-001 COVER SHEET

GI001 LEGEND, ABBREVIATIONS AND QUANTITIES

GC100 HAUL ROUTE

C-001 GENERAL NOTES

C-002 GENERAL NOTES

C-003 GENERAL NOTES

C-100 OVERALL KEY MAP

CU101 UTILITY PLAN 1

CU102 UTILITY PLAN 2

CU103 UTILITY PLAN 3

CU104 UTILITY PLAN 4

CU105 UTILITY PLAN 5

CU106 UTILITY PLAN 6

CU107 UTILITY PLAN 7

CU108 UTILITY PLAN 8

CU109 UTILITY PLAN 9

CU110 UTILITY PLAN 10

CU111 UTILITY PLAN 11

CU112 UTILITY PLAN 12

CU113 UTILITY PLAN 13

CU114 UTILITY PLAN 14

CU115 UTILITY PLAN 15

CU116 UTILITY PLAN 16

CU117 UTILITY PLAN 17

CU118 UTILITY PLAN 18

CU119 UTILITY PLAN 19

CU120 UTILITY PLAN 20

CU121 UTILITY PLAN 21

CU122 UTILITY PLAN 22

CU123 UTILITY PLAN 23

CU124 UTILITY PLAN24

CU125 UTILITY PLAN 25

C-501 DETAILS

CONTROL POINTS

POINT

NUMBER NORTHING EASTING ELEVATION DESCRIPTION

2 733719.084 977107.851 37.32 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

69 733787.396 976838.113 37.63 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

70 732491.396 978315.122 24.64 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

71 732629.025 978280.001 21.83 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

72 735787.673 973793.083 35.27 TOP OF HELICOPTER TIE DOWN ANCHOR BOLT IN CONCRETE

73 735856.366 973880.637 35.40 TOP OF HELICOPTER TIE DOWN ANCHOR BOLT IN CONCRETE

74 730567.927 964396.145 17.19 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

75 730699.772 964475.179 17.47 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

76 731006.920 966932.470 11.92 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

77 731141.316 966941.577 11.29 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

78 734458.533 975841.936 37.37 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

79 734402.155 975697.887 36.25 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

80 731669.800 965857.569 12.09 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

81 731811.423 966005.454 10.36 MAG NAIL IN GRASS AREA; MARKED WITH STAKE AND FLAGGED

HAUL ROUTE

SCALE: 1"=750'1

GC100

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HAUL ROUTE

LEGEND

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CONTRACTOR STAGING AREA

SEE SHEET CU107

MONTGOMERY GATE IS OPEN 24/7. CHECK ONLINE FOR ALL OTHER GATE HOURS AND UPDATES.

ALTERNATIVE HAUL ROUTE

DURING PT ACTIVITIES

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CIVIL GENERAL NOTES:

1. CONTRACTOR MUST COORDINATE ALL WORK WITH THE CONTRACTING OFFICER. THE

CONTRACTOR MUST REFER TO THE PROJECT SPECIFICATIONS, HOWEVER IF CONFLICTS ARISE,

THE CONTRACTOR MUST BRING IT TO THE ATTENTION OF THE CONTRACTING OFFICER AND

ENGINEER FOR RESOLUTION. ALL MATERIALS AND WORKMANSHIP WILL CONFORM TO THE

PROJECT SPECIFICATIONS.

2. EXISTING UTILITY INFORMATION IS NOT TO BE RELIED ON AS BEING EXACT OR COMPLETE. THE

CONTRACTOR MUST BE RESPONSIBLE FOR LOCATION, VERIFICATION, SUPPORT AND

PROTECTION OF ALL ABOVEGROUND AND UNDERGROUND UTILITIES TO REMAIN IN PLACE,

INCLUDING ANY UTILITIES NOT INDICATED ON CONTRACT DRAWINGS. ANY CONFLICTS OR

DISCREPANCIES SHALL BE BROUGHT TO THE CONTRACTING OFFICER'S AND ENGINEER'S

ATTENTION IMMEDIATELY.

3. CONTRACTOR MUST PROTECT ALL EXISTING STRUCTURES, TREES, PAVEMENT, UTILITIES, AND

OTHER PROPERTY UNLESS THEY ARE TO BE DEMOLISHED. ANY PROPERTY NOT AUTHORIZED

FOR REMOVAL, BUT DAMAGED BY THE CONTRACTOR MUST BE RESTORED BY THE

CONTRACTOR TO THE CONTRACTING OFFICER'S SATISFACTION AT NO ADDITIONAL EXPENSE TO

THE OWNER.

4. CONTRACTOR MUST MAKE EVERY EFFORT TO SAVE PROPERTY IRONS, MONUMENTS, OTHER

PERMANENT POINTS AND LINES OF REFERENCE AND CONSTRUCTION STAKES. PROPERTY

IRONS, MONUMENTS, AND OTHER PERMANENT POINTS OF REFERENCE DESTROYED BY THE

CONTRACTOR MUST BE REPLACED BY A GEORGIA LICENSED LAND SURVEYOR AT THE

CONTRACTOR'S EXPENSE.

5. THE CONTRACTOR MUST MAKE SURE THAT WORK PERFORMED UNDER THIS CONTRACT SHALL

NOT IMPACT THE OPERATION OF ANY ADJACENT PROPERTIES.

6. CONTRACTOR MUST SEQUENCE WORK AS NECESSARY TO ENSURE THAT ALL UTILITY

SERVICES, INCLUDING FIRE HYDRANTS, REMAIN OPERATIONAL DURING CONSTRUCTION.

7. THE CONTRACTOR MUST RESTORE ANY ACCESS ROADS AND STAGING AREAS USED BACK TO

THEIR ORIGINAL STABILIZED CONDITION OR BETTER. ALL DISTURBED AREAS SHALL BE

VEGETATED IN ACCORDANCE WITH THE PROJECT SPECIFICATIONS.

8. THE CONTRACTOR MUST TAKE ADEQUATE PROTECTIVE MEASURES TO ENSURE THAT EXISTING

PAVEMENT SURFACES ARE NOT DAMAGED FROM TRACKED CONSTRUCTION EQUIPMENT OR

ANY OTHER POSSIBLE SOURCE WHEN EQUIPMENT IS BEING MOVED DURING AND AFTER WORK

HAS BEING CONDUCTED. CONTRACTOR MUST REPAIR ANY PAVED AREAS DAMAGED DURING

CONSTRUCTION TO THE SATISFACTION OF THE CONTRACTING OFFICER.

9. EXISTING PAVEMENTS AND ALL OTHER AREAS ADJACENT TO THE SITE SHALL BE KEPT CLEAN

AT ALL TIMES. DO NOT ALLOW BUILD UP OF SOIL, MUD, DUST OR OTHER DEBRIS.

10. CONTRACTOR IS RESPONSIBLE FOR ALL SURVEYING AND STAKING TO COMPLETE THE WORK.

11. ANY AND ALL MATERIAL QUANTITIES INDICATED ON THIS PLAN SET ARE FOR REFERENCE ONLY.

CONTRACTOR MUST VERIFY ALL MATERIAL QUANTITIES SHOWN.

12. CONTRACTOR MUST MAINTAIN A 50-FOOT PROTECTIVE BUFFER AROUND ALL WETLAND AREAS

TO THE MAXIMUM EXTENT POSSIBLE. IN NO CASE SHALL CONTRACTOR ENCROACH CLOSER

THAN SHOWN WITHOUT PRIOR APPROVAL.

13. CONTRACTOR MUST BE AWARE OF ONGOING CONSTRUCTION ON ADJACENT SITES AND

COORDINATE WHEN NEEDED WITH OTHER CONTRACTORS.

14. ALL EXCAVATIONS MUST BE PERFORMED SO THAT THE SITE AND THE AREA IMMEDIATELY

SURROUNDING THE SITE WHICH AFFECTS CONSTRUCTION OPERATIONS WILL BE CONTINUALLY

AND EFFECTIVELY DRAINED. THE CONTRACTOR MUST PROVIDE DRAINAGE AND DEWATERING

AS REQUIRED TO ENSURE THAT ALL FOOTING EXCAVATIONS ARE ACCOMPLISHED WITH THE

SUBGRADE SOILS REMAINING DRY AND FIRM UNTIL AFTER FOOTINGS ARE PLACED AND

BACKFILLED. REMOVAL OF SURFACE WATER, GROUNDWATER, AND ANY PERCHED WATER

CONDITIONS, WHICH MIGHT BE ENCOUNTERED DURING EXCAVATIONS, SHALL BE

ACCOMPLISHED BY APPROVED MEANS. REFER TO SPECIFICATION 31 00 00 EARTHWORK FOR

ADDITIONAL REQUIREMENTS.

15. SOME OF THE PROPOSED WORK WILL BE IN AREAS LOCATED WITHIN OR ADJACENT TO

REMEDIATION SITES CONTAINING GROUNDWATER MONITORING WELLS (GWM). THOSE SHALL

BE PROTECTED DURING CONSTRUCTION OPERATIONS. IF DISTURBED THEY SHALL BE

REESTABLISHED, BY A CERTIFIED PERSONNEL, TO FULL FUNCTIONALITY BASED ON HAAF

RESTORATION DEPARTMENT REQUIREMENTS AT NO ADDITIONAL COST TO THE GOVERNMENT.

16. IF ANY SOIL CONTAMINATION IS ENCOUNTERED DURING CONSTRUCTION OPERATIONS (ODORS

AND/OR STAINED SOILS), WORK SHALL BE HALTED AND THE CONTRACTOR SHALL CONTACT THE

RESTORATION POC (ALGEANA STEVENSON - 912.215.5144) IMMEDIATELY.

17. IF ANY EQUIPMENT AND/OR MATERIALS SHALL BE ALLOWED TO BE LEFT ON THE AIRFIELD OVERNIGHT, IT SHALL BE COVERED AND TIED DOWN, TO MINIMIZE THE POTENTIAL OF FOREIGN

OBJECT DAMAGE (FOD) TO AIRCRAFTS. ADDITIONAL REQUIREMENTS CAN BE FOUND IN

PROJECT SPECIFICATION 02 41 00 DEMOLITION.

18. NO WORK IS ALLOWED TO BE CONDUCTED ON THE AIRFIELD WITHOUT PRIOR AUTHORIZATION

FROM THE AIRFIELD OPERATIONS MANAGEMENT. CONTACT BASE OPS (IN BLDG #1252) PRIOR

TO ANY AIRFIELD WORK.

19. A REPRESENTATIVE FROM THE GENERAL CONTRACTOR WILL HAVE TO ATTEND A MANDATORY

MEETING AT BASE OPS (BUILDING #1252) EVERY MONDAY 0900.

20. FOREIGN OBJECT DAMAGE (FOD) INSPECTION CHECKS MUST BE PROVIDED TO PROTECT AIR

TRAFFIC. COORDINATE LOCATIONS WITH AIRFIELD MANAGEMENT BASED ON CONSTRUCTION

SEQUENCE.

EXISTING CONDITION NOTES:

1. THE SURVEYOR MAKES NO GUARANTEE THAT THE UTILITIES AND SITE FEATURES SHOWN

COMPRISE ALL UTILITIES AND SITE FEATURES IN THE AREA EITHER IN SERVICE OR ABANDONED.

2. TOPOGRAPHIC SURVEY WAS COMPLETED BY BARGE DESIGN SOLUTIONS. SURVEY IS DATED 10

DECEMBER, 2018. FOR SURVEYING, BARGE DESIGN SOLUTIONS USED NAD 1983 (2011),

GEORGIA EAST ZONE, STATE PLANE COORDINATES SYSTEM FOR HORIZONTAL CONTROLS AND

NAVD 1988 FOR VERTICAL CONTROLS, WITH A GRID TO GROUND SCALE FACTOR OF 110 FOOT

FOR NATURAL GROUND AND 1100 FOOT FOR HARD SURFACES. '

3. THE SURVEYED SITE IS LOCATED IN ZONE "X", AREAS DETERMINED TO BE OUTSIDE THE 0.2%

ANNUAL CHANCE FLOODPLAIN PER THE FEMA FLOOD INSURANCE RATE MAP (FIRM) FOR

CHATHAM COUNTY, GEORGIA AND INCORPORATED AREAS, PANEL 145 OF 455, MAP NUMBER

13051C0145 F, EFFECTIVE DATE: SEPTEMBER 26, 2008.

BORROW AREA NOTES

1. CONTRACTOR MUST OBTAIN BORROW MATERIAL FROM APPROVED PRIVATE SOURCES.

2. CONTRACTOR IS RESPONSIBLE TO ENSURE BORROW AREA HAS AN APPROVED EROSION

CONTROL PERMIT AND APPROPRIATE MEASURES IN PLACE PRIOR TO ANY LAND DISTURBING

ACTIVITY.

DEMOLITION PLAN NOTES:

1. ALL RECYCLABLE MATERIALS (LISTED IN THE RECYCLING STANDARD OPERATING PROCEDURES)

GENERATED DURING THE ENTIRE TERM OF ANY CONSTRUCTION AND DEMOLITION WILL BE

TURNED OVER TO THE FORT STEWART OR HAAF RECYCLING PROGRAM. CONTRACTORS MUST

CONTACT THE COR WHO WILL COORDINATE WITH THE DPW ENVIRONMENTAL WASTE

MANAGEMENT SECTION (912-767-2010) TO ARRANGE FOR TURN-IN OF

RECYCLABLE/SALVAGEABLE MATERIALS.

2. THE CONTRACTOR AND THEIR ON-SITE WORKERS MUST COMPLETE THE SUSTAINABILITY

MANAGEMENT SYSTEM (SMS) GENERAL AWARENESS TRAINING PRIOR TO CONTRACT KICK-OFF

MEETING. CONTACT DPW ENVIRONMENTAL FOR TRAINING (912-767-2010).

3. ALL CONSTRUCTION DEBRIS NOT WANTED BY THE GOVERNMENT SHALL BECOME THE

PROPERTY OF THE CONTRACTOR.

4. THE CONTRACTOR MUST LOCATE UNDERGROUND UTILITIES AND COORDINATE DEMOLITION

AND / OR RELOCATION WORK. THE CONTRACTOR MUST TAKE EXTRA PRECAUTIONARY

MEASURES TO AVOID DAMAGE TO THE HIGH PRESSURE GAS LINE IN THE PROJECT AREA. ONCE

LOCATED IN THE FIELD, POSITIVE VERIFICATION BY POTHOLING IS REQUIRED FOR THE HIGH

PRESSURE GAS LINE AND ALL OTHER UTILITIES. REPORT ANY CONFLICTS OR DISCREPANCIES

TO ENGINEER IMMEDIATELY.

5. AT THE END OF EACH DAY'S WORK, REMOVE ANY DEBRIS RESULTING FROM CONTRACTOR'S

DEMOLITION OPERATIONS THAT IS NOT WITHIN THE CONTRACTOR'S CONSTRUCTION FENCING.

6. CONTRACTOR MUST MINIMIZE THE IMPACT OF TEMPORARY STORAGE OF EXCAVATED SOILS.

7. CONTRACTOR MUST PROVIDE TEMPORARY FENCING AT THE BOUNDARY OF WORK ACTIVITIES

TO KEEP NON-CONTRACTOR PERSONNEL OUT OF THE WORK AREAS. TEMPORARY FENCING

SHALL BE PER PROJECT SPECIFICATIONS, AND SUPPORTED AT INTERVALS SUFFICIENT TO

RESIST AT LEAST 250 POUNDS OF FORCE APPLIED AGAINST THE FENCE.

8. CONTRACTOR MUST PROVIDE WARNING SIGNS AT THE PERIMETER OF WORK ACTIVITIES THAT

DESIGNATE THE PRESENCE OF CONSTRUCTION HAZARDS AND REQUIRE UNAUTHORIZED

PERSONS TO KEEP OUT. SIGNS MUST BE PLACED ON ALL SIDES OF THE PROJECT ACTIVITIES, WITH AT LEAST ONE SIGN EVERY 300 FEET. ALL POINTS OF ENTRY SHALL HAVE SIGNS

DESIGNATING THE CONSTRUCTION SITE AS A HARD HAT AREA.

9. DIMENSIONS SHOWN ARE FOR GENERAL REFERENCE. CONTRACTOR MUST BE RESPONSIBLE

FOR REMOVAL OF ALL ITEMS, INCLUDING ALL EXCAVATED MATERIALS NECESSARY TO

COMPLETE WORK WITHIN THIS CONTRACT.

10. WHERE ASPHALT OR CONCRETE DEMOLITION IS REQUIRED, CONTRACTOR MUST USE A SAW

CUT AT THE LIMITS OF DEMOLITION OR NEAREST JOINT TO OBTAIN A CLEAN VERTICAL EDGE.

11. WHERE UTILITIES TO BE REMOVED IMPACT THE FOOTPRINT OF THE NEW BUILDINGS, AND SOILS

ARE UNSUITABLE, CONTRACTOR MUST EXCAVATE AND REMOVE AN ADDITIONAL 2-FEET OF

SOILS TO EITHER SIDE OF PIPE AND 1 FOOT BELOW BOTTOM OF PIPE TO REMOVE UNSUITABLE

SOILS. SUITABLE SOILS SHALL BE UTILIZED FOR BACKFILL. CONFIRM SUITABILITY WITH

CONTRACTOR'S GEOTECHNICAL ENGINEER.

12. DEMOLITION AND SUBSEQUENT CONSTRUCTION OF STORMDRAIN FACILITIES SHALL BE

PERFORMED IN SUCH A MANNER THAT THE OLD PIPE AND STRUCTURES ARE REMOVED AND

NEW STRUCTURES AND PIPING ARE IMMEDIATELY PUT INTO SERVICE. CONTRACTOR MUST

ENSURE THAT STORMDRAIN DOES NOT REMAIN OUT OF SERVICE FOR LONGER THAN 12-HOURS

AT A TIME. CONTRACTOR MUST MAKE NECESSARY PROVISIONS TO MAINTAIN PROPER

STORMDRAINAGE DURING CONSTRUCTION.

13. DEDICATED DEMOLITION AND OTHER WASTE AREAS/EARTHEN MATERIAL STOCKPILES MUST BE

LOCATED AT LEAST 50' FROM STORMDRAINS, WETLANDS OR STREAMS.

14. REMOVE AND DISPOSE OF ALL STUMPS AND ROOT MAT AS REQUIRED FOR PROJECT

CONSTRUCTION IN ACCORDANCE WITH PROJECT SPECIFICATIONS.

15. ALL PIPING INDICATED FOR DEMOLITION SHALL BE REMOVED UNLESS CONTRACTING OFFICER

APPROVES FOR ABANDONMENT IN PLACE. PIPING ABANDONED IN PLACE SHALL HAVE A

MINIMUM 24 INCHES LENGTH PLUGGED WITH GROUT AT STRUCTURES. PIPING ABANDONED IN

PLACE UNDER PAVEMENTS SUBJECT TO POTENTIAL VEHICLE LOADINGS SHALL BE FILLED WITH

FLOWABLE FILL.

16. REMOVE EXISTING UTILITY STRUCTURES TO 3 FEET BELOW EXISTING OR NEW ADJACENT

GRADE, WHICHEVER IS GREATER. BREAK UP BASES TO PERMIT DRAINAGE. FILL WITH CLEAN

SAND.

17. UTILITIES SHALL NOT BE ABANDONED IN PLACE UNDERNEATH OR WITHIN 10 FEET OF ANY NEW

FACILITIES.

18. DO NOT STOCK PILE MATERIAL OVER EXISTING OR NEWLY INSTALLED UTILITIES.

19. THE DEMOLITION OF ANY ELECTRICAL PRIMARY OR SECONDARY SERVICES, TRANSFORMERS, OR EXTERIOR SITE LIGHTING SHALL BE COORDINATED WITH THE UTILITY PROVIDER.

20. THE CONTRACTOR MUST OBTAIN A DIG PERMIT THROUGH THE COR FROM THE HUNTER ARMY

AIRFIELD DPW PRIOR TO ANY CONSTRUCTION OPERATION.

GENERAL UTILITY NOTES:

1. SURVEYS AND CONSTRUCTION DOCUMENTS RELATED TO THE LOCATION OF UTILITIES MAY NOT

REPRESENT ACTUAL INSTALLED CONDITIONS. THE CONTRACTOR MUST VERIFY ACTUAL

LOCATIONS OF ALL PLACED UTILITIES, AND HAVE SITE UTILITIES LOCATED AND SHALL

COORDINATE WITH THE UTILITY OWNERS AND GOVERNMENT REGARDING ANY FUTURE

PLANNED UTILITY INSTALLATIONS THAT AFFECT WORK. NO UTILITIES SHALL BE ALLOWED

BENEATH THE PROPOSED BUILDING.

2. CONTRACTOR MUST CONTACT 811 FOR ALL UTILITY LOCATES AND COORDINATION.

3. THE MINIMUM SEPARATION BETWEEN ELECTRIC OR COMMUNICATION LINES AND OTHER UTILITY

LINES SHALL BE 36 INCHES VERTICALLY AND 36 INCHES HORIZONTALLY WHEN RUNNING

ADJACENT. WHERE UTILITIES CROSS, THE MINIMUM SEPARATION SHALL BE 12 INCHES

VERTICALLY. IN THE CASE OF CONCRETE ENCASEMENT, THE CLEARANCES SHALL BE

MEASURED FROM THE OUTERMOST DIMENSION OF THE UTILITY LINE AND SHALL HAVE

SUITABLE SUPPORTS ON EACH SIDE OF THE UPPER LINE TO PREVENT TRANSFERRING ANY

DIRECT LOAD ONTO THE LOWER LINE. OPEN UTILITY TRENCHES SHALL BE MATTED.

STORMWATER AND GRADING NOTES:

1. CONTRACTOR MUST COORDINATE ANY DISCREPANCIES WITH THE LOCATIONS OF UTILITIES

WITH THE COR.

2. ALL CUT OR FILL SLOPES SHALL BE 3:1 OR FLATTER UNLESS OTHERWISE NOTED.

3. DURING CONSTRUCTION, CONTRACTOR MUST PERFORM GRADING IN A MANNER AND

SEQUENCE THAT WILL PROVIDE PROPER DRAINAGE AT ALL TIMES.

4. CONTRACTOR MUST ADJUST AND/OR CUT EXISTING PAVEMENT AS NECESSARY TO ASSURE A

SMOOTH FIT AND CONTINUOUS GRADE.

5. ALL PROPOSED STRUCTURES SHALL BE PRECAST UNLESS SPECIFICALLY APPROVED BY THE

PROJECT ENGINEER.

6. STORM PIPE SHALL BE ALL CLASS III REINFORCED CONCRETE PIPE (RCP) UNLESS OTHERWISE

NOTED.

7. UPON THE COMPLETION OF CONSTRUCTION AND SITE STABILIZATION, ALL PROPOSED AND

EXISTING PIPES SHALL BE CLEANED OUT TO REMOVE ALL ACCUMULATED SILT AND DEBRIS.

8. ALL STORM PIPE ENTERING STRUCTURES SHALL BE CUT FLUSH TO INSIDE OF BOX AND

GROUTED TO ASSURE CONNECTION AT STRUCTURE IS WATERTIGHT. MAXIMUM PIPE

PROTRUSION INTO STRUCTURE SHALL BE 6-INCHES.

9. ALL STORMWATER STRUCTURES IN PAVED AREAS SHALL BE FLUSH WITH PAVEMENT AND

SHALL BE HEAVY-DUTY TRAFFIC RATED.

10. CONTRACTOR MUST ASSURE POSITIVE DRAINAGE AWAY FROM BUILDINGS AND ALL NATURAL

AND PAVED AREAS.

11. CONTRACTOR MUST PROVIDE A MINIMUM OF 5% SLOPE AWAY FROM THE FACILITY FOR THE

FIRST 5 FEET AGAINST THE BUILDINGS AND SHALL ASSURE THAT THE FINISHED FLOOR

ELEVATIONS ARE A MINIMUM OF 6 INCHES ABOVE THE FINISHED GRADE AROUND BUILDINGS IN

UNPAVED AREAS PER UFC.

12. ALL STORMDRAIN TRENCHING, BEDDING, AND BACKFILL SHALL BE IN ACCORDANCE WITH

SPECIFICATIONS.

13. THE CONTRACTOR MUST VERIFY AND COORDINATE ALL DIMENSIONS SHOWN, INCLUDING THE

HORIZONTAL AND VERTICAL LOCATION OF CURB INLETS AND ALL UTILITIES CROSSING THE

STORM SEWER.

14. THE LOCATIONS OF STORM SEWER STRUCTURES SHOWN ON THESE PLANS ARE APPROXIMATE.

THE CONTRACTOR MUST STAKE ALL INLET STRUCTURES SUCH THAT INLET TOPS ALIGN

HORIZONTALLY WITH PROPOSED PAVEMENT SWALE LOCATIONS. WHERE PROPOSED STORM

SEWERS TIE TO EXISTING STRUCTURES, PIPES, ETC., THE CONTRACTOR MUST FIELD ADJUST

PROPOSED STORM SEWERS TO MATCH THE LOCATIONS OF THESE EXISTING FEATURES.

15. ALL ROOF LEADER DRAIN LINES ARE TO BE INSTALLED AT A MINIMUM OF 1% SLOPE.

16. CONTOURS AND GUTTER GRADIENTS ARE APPROXIMATE. SPOT ELEVATIONS ARE TO BE USED

IN CASE OF DISCREPANCY.

17. TOP OF WALL ("TW") AND BOTTOM OF WALL ("BW") GRADES SHOWN ON THESE PLANS

REPRESENT FINISHED GROUND ADJACENT TO WALL.

EXCAVATION NOTES

EXCAVATION REQUIREMENTS

1. EXCAVATE TO CONTOURS, ELEVATIONS, AND DIMENSIONS INDICATED. REUSE EXCAVATED

MATERIALS THAT MEET THE SPECIFIED REQUIREMENTS.

2. EXCAVATIONS SHALL EXTEND SUFFICIENT DISTANCE FROM WALLS AND FOOTINGS TO ALLOW

FOR PLACING AND REMOVING FORMS.

3. EXCAVATION BELOW INDICATED DEPTHS SHALL NOT BE PERMITTED EXCEPT TO REMOVE

UNSATISFACTORY MATERIAL.

4. UNSATISFACTORY MATERIAL REMOVED BELOW DEPTHS INDICATED SHALL BE REPLACED WITH

SATISFACTORY MATERIAL AT NO ADDITIONAL COST TO THE GOVERNMENT.

5. EXCAVATION SHALL BE PERFORMED SO THAT THE AREA WILL BE CONTINUALLY AND

EFFECTIVELY DEWATERED TO ELIMINATE ANY GROUND WATER IN THE EXCAVATION AS WELL

AS GRADED TO DRAIN TO ELIMINATE ANY PONDING SURFACE WATER. WATER FROM ANY

SOURCE SHALL NOT BE PERMITTED TO ACCUMULATE IN THE EXCAVATION. THE EXCAVATION

SHALL BE DRAINED BY PUMPING OR OTHER SATISFACTORY METHODS TO PREVENT SOFTENING

OF THE FOUNDATION BOTTOM, UNDERCUTTING OF FOOTINGS, OR OTHER ACTIONS

DETRIMENTAL TO PROPER CONSTRUCTION.

6. SHORING INCLUDING SHEET PILING SHALL BE FURNISHED AND INSTALLED AS NECESSARY TO

PROTECT WORKMEN, BANKS, ADJACENT PAVING, STRUCTURES, AND UTILITIES.

FILL REQUIREMENTS

1. TYPE OF MATERIALS PERMITTED IN FILL INCLUDE GW, GM, GC, GP, SW, SP, SM, AND SC OF THE UNIFIED SOIL CLASSIFICATION SYSTEM. THE PLASTICITY INDEX SHOULD BE LESS THAN 25 AND

CONTAIN NO MORE THAN 15% FINES (MATERIAL PASSING THE NO. 200 SIEVE).

2. WHEN SUBGRADE SURFACES ARE LESS THAN THE SPECIFIED DENSITY, THE SURFACE SHALL BE

BROKEN UP TO A MINIMUM DEPTH OF 6 INCHES, PULVERIZED AND COMPACTED TO THE

SPECIFIED DENSITY. SLOPED SURFACES STEEPER THAN 1 VERTICAL to 4 HORIZONTAL SHALL BE

PLOWED, STEPPED, BENCHED, OR BROKEN UP SO THAT THE FILL MATERIAL WILL BOND WITH

THE EXISTING MATERIAL.

3. THE EXCAVATED SURFACE SHALL BE SCARIFIED TO A DEPTH OF 6 INCHES BEFORE FILL

PLACEMENT IS BEGUN.

4. SATISFACTORY MATERIAL SHALL BE PLACED IN HORIZONTAL LAYERS NOT EXCEEDING 8 INCHES

IN LOOSE DEPTH AND THEN COMPACTED IN GRASSED AREAS AND NOT EXCEEDING 6 INCHES IN

LOOSE DEPTH IN PAVED AREAS.

5. MATERIALS SHALL NOT BE PLACED ON SURFACES THAT ARE MUDDY.

6. COMPACTION SHALL BE ACCOMPLISHED BY SHEEPSFOOT ROLLERS, PNEUMATIC-TIRED

ROLLERS, STEEL-WHEELED ROLLERS, OR OTHER APPROVED EQUIPMENT WELL SUITED TO THE

SOIL BEING PREPARED.

7. MATERIALS SHALL BE MOISTENED OR AERATED AS NECESSARY TO PROVIDE PROPER WATER

CONTENT THAT WILL READILY FACILITATE OBTAINING THE SPECIFIED COMPACTION WITH

EQUIPMENT USED.

8. FILL MATERIALS SHALL BE COMPACTED TO DENSITIES AFTER ASTM STANDARD D 1557 TO 95%

UNDER STRUCTURES & 90% UNDER SIDEWALKS/GRASSED AREAS FOR COHESIONLESS FILLS.

COMPACT TOP 24 INCHES BELOW FINISHED PAVEMENT OR TOP 12 INCHES OF SUBGRADE,

WHICHEVER IS GREATER TO 100%.

SIDEWALK, PAVING, AND CURBING NOTES:

1. WHERE NEW CURB AND GUTTER TIES TO EXISTING CURB OR CURB AND GUTTER, A TRANSITION

OF 10' SHALL BE MADE TO CONFORM TO THE EXISTING HEIGHTS, WIDTHS, AND SHAPES.

2. SLOPE OF HANDICAPPED PARKING SPACES AND ACCESS AISLES SHALL NOT EXCEED 2% IN ANY

DIRECTION.

3. SIDEWALK CROSS-SLOPE MUST NOT EXCEED 2%.

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EROSION CONTROL NOTES:

1. AT A MINIMUM, A LEVEL 1A E&S CONTROL CERTIFIED INDIVIDUAL MUST BE ON THE SITE DURING

ANY LAND DISTURBANCE ACTIVITY.

2. THE CONTRACTOR MUST NOTIFY THE COE ENVIRONMENTAL SPECIALIST SEVEN (7) DAYS BEFORE

COMMENCING ANY LAND DISTURBING ACTIVITY AND, UNLESS WAIVED BY THE COE, SHALL BE

REQUIRED TO HOLD A PRE-CONSTRUCTION MEETING BETWEEN PROJECT REPRESENTATIVES

AND A REPRESENTATIVE OF COE.

3. THE CONTRACTOR MUST NOTIFY COE IN WRITING AND BY TELEPHONE AT THE FOLLOWING

POINTS:

A. THE REQUIRED PRE-CONSTRUCTION MEETING.

B. FOLLOWING INSTALLATION OF SEDIMENT CONTROL MEASURES.

C. DURING THE INSTALLATION OF SEDIMENT BASINS AT THE REQUIRED INSPECTION POINTS (SEE

INSPECTION CHECKLIST ON PLAN) NOTIFICATION PRIOR TO COMMENCING CONSTRUCTION OF

EACH STEP IS MANDATORY.

D. PRIOR TO REMOVAL OR MODIFICATION OF ANY SEDIMENT CONTROL STRUCTURE(S).

E. PRIOR TO REMOVAL OF ALL SEDIMENT CONTROL DEVICES.

F. PRIOR TO FINAL ACCEPTANCE.

4. THE CONTRACTOR MUST CONSTRUCT ALL EROSION AND SEDIMENT CONTROL MEASURES PER

THE APPROVED PLAN AND CONSTRUCTION SEQUENCE AND SHALL HAVE THEM INSPECTED AND

APPROVED BY THE WATER MANAGEMENT BRANCH (WMB) INSPECTOR OR COE INSPECTOR PRIOR

TO BEGINNING ANY OTHER LAND DISTURBANCES. MINOR SEDIMENT CONTROL DEVICE LOCATION

ADJUSTMENTS MAY BE MADE IN THE FIELD WITH THE APPROVAL OF THE COE INSPECTOR. THE

CONTRACTOR MUST ENSURE THAT ALL RUNOFF FROM DISTURBED AREAS IS DIRECTED TO THE

SEDIMENT CONTROL DEVICES AND SHALL NOT REMOVE ANY EROSION OR SEDIMENT CONTROL

MEASURE WITHOUT PRIOR PERMISSION FROM COE INSPECTOR. THE CONTRACTOR MUST OBTAIN

PRIOR COE APPROVAL FOR CHANGES TO THE SEDIMENT CONTROL PLAN AND/OR SEQUENCE OF

CONSTRUCTION.

5. THE CONTRACTOR MUST PROTECT ALL POINTS OF CONSTRUCTION INGRESS AND EGRESS TO

PREVENT THE DEPOSITION OF MATERIALS ONTO PUBLIC ROADS. ALL MATERIAL DEPOSITED

ONTO PUBLIC ROADS SHALL BE REMOVED IMMEDIATELY.

6. THE CONTRACTOR MUST INSPECT DAILY AND MAINTAIN CONTINUOUSLY IN AN EFFECTIVE

OPERATION CONDITION ALL EROSION AND SEDIMENT CONTROL MEASURES UNTIL SUCH TIMES

AS THEY ARE REMOVED WITH PRIOR PERMISSION FROM COE INSPECTOR.

7. ALL SEDIMENT BASINS, TRAP EMBANKMENTS AND SLOPES, PERIMETER DIKES, SWALES AND ALL DISTURBED SLOPES STEEPER OR EQUAL TO 3:1 SHALL BE STABILIZED WITH SOD OR SEED AND

ANCHORED STRAW MUCH, OR OTHER APPROVED STABILIZATION MEASURES, AS SOON AS

POSSIBLE BUT NO LATER THAN SEVEN (7) CALENDAR DAYS AFTER ESTABLISHMENT FOR SLOPES

STEEPER THAN 3:1 AND FOURTEEN (14) DAYS FOR OTHER AREAS. ALL AREAS DISTURBED

OUTSIDE OF THE PERIMETER SEDIMENT CONTROL SYSTEM MUST BE MINIMIZED. MAINTENANCE

MUST BE PERFORMED AS NECESSARY TO ENSURE CONTINUED STABILIZATION. (REQUIREMENT

FOR STABILIZATION MAY BE REDUCED TO THREE (3) DAYS FOR SENSITIVE AREAS.)

8. THE CONTRACTOR MUST APPLY SOD OR SEED AND ANCHORED STRAW MULCH, OR OTHER

APPROVED STABILIZATION MEASURES TO ALL DISTURBED AREAS AND STOCKPILES WITHIN

FOURTEEN (14) CALENDAR DAYS AFTER STRIPPING AND GRADING ACTIVITIES HAVE CEASED IN

THE AREA. MAINTENANCE SHALL BE PERFORMED AS NECESSARY TO ENSURE CONTINUED

STABILIZATION. (REQUIREMENT MAY BE REDUCED TO SEVEN (7) DAYS FOR SENSITIVE AREAS.)

9. PRIOR TO REMOVAL OF SEDIMENT CONTROL MEASURES, THE CONTRACTOR MUST STABILIZE

AND HAVE ESTABLISHED PERMANENT STABILIZATION FOR ALL CONTRIBUTORY DISTURBED

AREAS USING SOD OR AN APPROVED PERMANENT SEED MIXTURE WITH REQUIRED SOIL

AMENDMENTS AND AN APPROVED ANCHORED MULCH. WOOD FIBER MULCH MAY ONLY BE USED

IN SEEDING SEASON WHERE THE SLOPE DOES NOT EXCEED 10% AND GRADING HAS BEEN DONE

TO PROMOTE SHEET FLOW DRAINAGE. AREAS BROUGHT TO FINISHED GRADE DURING THE

SEEDING SEASON SHALL BE PERMANENTLY STABILIZED AS SOON AS POSSIBLE, BUT NOT LATER

THAN FOURTEEN (14) CALENDAR DAYS AFTER ESTABLISHMENT. DPW WATER MANAGEMENT

BRANCH HUNTER ARMY AIRFIELD SEEDING SPECS SHALL BE USED FOR ALL TEMPORARY AND

PERMANENT SEEDING WITH THE EXCEPTION OF ANY DISTURBANCE IN WETLAND AREAS. FOR

WETLAND AREAS THE ENDANGERED SPECIES BRANCH WILL GIVE GUIDANCE AND HAS THEIR

OWN SEED SPECS TO BE USED IN WETLAND AREAS.

10. THE SITE'S APPROVAL LETTER, APPROVED EROSION AND SEDIMENT CONTROL PLANS, DAILY LOG

BOOKS, AND TEST REPORTS SHALL BE AVAILABLE AT THE SITE FOR INSPECTION BY DULY

AUTHORIZED OFFICIALS OF COE AND THE WMB RESPONSIBLE FOR PROJECT.

11. SURFACE DRAINAGE FLOWS OVER UNSTABILIZED CUT AND FILL SLOPES SHALL BE CONTROLLED

BY EITHER PREVENTING DRAINAGE FLOWS FROM TRAVERSING THE SLOPES OR BY INSTALLING

PROTECTIVE DEVICES TO CONVEY THE WATER DOWNSLOPE WITHOUT CAUSING EROSION. DIKES

SHALL BE INSTALLED AND MAINTAINED AT THE TOP OF A CUT OR FILL SLOPE UNTIL THE SLOPE AND DRAINAGE AREA TO IT ARE FULLY STABILIZED, AT WHICH TIME THEY MUST BE REMOVED AND

FINAL GRADING DONE TO PROMOTE SHEET FLOW DRAINAGE. PROTECTIVE METHODS MUST BE

PROVIDED AT POINTS OF CONCENTRATED FLOW WHERE EROSION IS LIKELY TO OCCUR.

12. PERMANENT SWALES OR OTHER POINTS OF CONCENTRATED WATER FLOW SHALL BE

STABILIZED WITH SOD OR SEED WITH AN APPROVED EROSION CONTROL MATTING, RIP-RAP, OR

BY OTHER APPROVED STABILIZATION MEASURES. TEMPORARY SEDIMENT CONTROL DEVICES

MAY BE REMOVED, WITH PERMISSION OF COE INSPECTOR AND WMB INSPECTORS, WITHIN

THIRTY (30) CALENDAR DAYS FOLLOWING ESTABLISHMENT OF PERMANENT STABILIZATION IN ALL

CONTRIBUTORY DRAINAGE AREAS. STORMWATER MANAGEMENT STRUCTURES USED

TEMPORARILY FOR SEDIMENT CONTROL SHALL BE CONVERTED TO THE PERMANENT

CONFIGURATION WITHIN THIS TIME PERIOD AS WELL.

13. NO PERMANENT CUT OR FILL SLOPE WITH GRADIENT STEEPER THAN 3:1 WILL BE PERMITTED IN

LAWN MAINTENANCE AREAS. A SLOPE GRADIENT OF UP TO 2:1 WILL BE PERMITTED IN

NON-MAINTENANCE AREAS PROVIDED THAT THOSE AREAS ARE INDICATED ON THE EROSION AND

SEDIMENT CONTROL PLAN WITH A LOW-MAINTENANCE GROUND COVER SPECIFIED FOR

PERMANENT STABILIZATION. SLOPE GRADIENT STEEPER THAN 2:1 WILL NOT BE PERMITTED WITH

VEGETATIVE STABILIZATION.

EROSION CONTROL NOTES (CONTINUED):

14. FOR FINISHED GRADING, THE CONTRACTOR MUST PROVIDE ADEQUATE GRADIENTS TO PREVENT

WATER FROM PONDING FOR MORE THAN TWENTY-FOUR (24) HOURS AFTER THE END OF A

RAINFALL EVENT. DRAINAGE COURSES AND SWALE FLOW AREAS MAY TAKE AS LONG AS

FOURTY-EIGHT (48) HOURS AFTER THE END OF A RAINFALL EVENT TO DRAIN. AREAS DESIGNED

TO HAVE STANDING WATER SHALL NOT BE REQUIRED TO MEET THIS REQUIREMENT.

15. SEDIMENT TRAPS OR BASINS ARE NOT PERMITTED WITHIN 20 FEET OF A FOUNDATION THAT

EXISTS OR IS UNDER CONSTRUCTION. NO STRUCTURE MAY BE CONSTRUCTED WITHIN 20 FEET

OF AN ACTIVE SEDIMENT TRAP OR BASIN.

16. THE COE INSPECTOR HAS THE OPTION OF REQUIRING ADDITIONAL SAFETY OR SEDIMENT

CONTROL MEASURES, IF DEEMED NECESSARY.

17. VEGETATIVE STABILIZATION SHALL BE PERFORMED IN ACCORDANCE WITH THE STANDARDS AND SPECIFICATIONS FOR SOIL EROSION AND SEDIMENT CONTROL. REFER TO APPROPRIATE HUNTER

ARMY AIRFIELD SPECIFICATIONS FOR TEMPORARY SEEDING, PERMANENT SEEDING, MULCHING,

SODDING, AND GROUND COVERS.

18. SEDIMENT SHALL BE REMOVED AND THE TRAP OR BASIN RESTORED TO ITS ORIGINAL

DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE QUARTER OF THE TOTAL DEPTH

OF THE TRAP OR BASIN. TOTAL DEPTH SHALL BE MEASURES FROM THE TRAP OR BASIN TO THE

CREST OF THE OUTLET.

19. SEDIMENT REMOVED FROM TRAPS (AND BASINS) SHALL BE PLACED AND STABILIZED IN

APPROVED AREAS, BUT NOT WITHIN A FLOODPLAIN, WETLAND OR TREE-SAVE AREA. WHEN

PUMPING SEDIMENT-LADEN WATER, THE DISCHARGE MUST BE DIRECTED TO A SEDIMENT

TRAPPING DEVICE PRIOR TO RELEASE FROM THE SITE. A SUMP PIT MAY BE USED IF SEDIMENT

TRAPS THEMSELVES ARE BEING PUMPED OUT. ALL WATER REMOVED FROM EXCAVATED AREAS

(E.G. UTILITY TRENCHES) SHALL BE PASSED THROUGH AN APPROVED DEWATERING PRACTICE

OR PUMPED TO A SEDIMENT TRAP OR BASIN PRIOR TO DISCHARGE FROM THE SITE (I.E. VIA

FUNCTIONAL STORM DRAIN SYSTEM OR TO STABLE GROUND SURFACE).

21. FOR SEDIMENT CONTROL FOR UTILITY CONSTRUCTION FOR AREAS OUTSIDE OF DESIGNED

CONTROLS OR AS DIRECTED BY ENGINEER OR COE INSPECTOR:

A. CALL " GEORGIA ONE CALL" 48 HOURS PRIOR TO THE START OF WORK.

B. EXCAVATED TRENCH MATERIAL SHALL BE PLACED ON THE HIGH SIDE OF THE TRENCH.

C. TRENCHES FOR UTILITY INSTALLATION SHALL BE BACKFILLED, COMPACTED, AND STABILIZED

AT THE END OF EACH WORKING DAY. NO MORE TRENCHES SHALL BE OPENED THAN CAN BE

COMPLETED THE SAME DAY.

D. TEMPORARY SILT FENCE SHALL BE PLACED IMMEDIATELY DOWNSTREAM OF ANY DISTURBED

AREA INTENDED TO REMAIN DISTURBED FOR MORE THAN ONE DAY.

22.WHERE DEEMED APPROPRIATE BY THE ENGINEER OR INSPECTOR, SEDIMENT BASINS AND TRAPS

MAY NEED TO BE SURROUNDED WITH AN APPROVED SAFETY FENCE. THE FENCE MUST

CONFORM TO LOCAL ORDINANCES AND REGULATIONS. THE CONTRACTOR MUST CHECK WITH

LOCAL BUILDING OFFICIALS ON APPLICABLE SAFETY REQUIREMENTS. WHERE SAFETY FENCE IS

DEEMED APPROPRIATE AND LOCAL ORDINANCES DO NOT SPECIFY FENCING SIZES AND TYPES,

THE FOLLOWING SHALL BE USED AS A MINIMUM STANDARD: THE SAFETY FENCE MUST BE MADE

OF WELDED WIRE AND AT LEAST 42 INCHES HIGH, HAVE POSTS SPACED NO FARTHER APART

THAN 8 FEET, HAVE MESH OPENINGS NO GREATER THAN 2 INCHES IN WIDTH AND 4 INCHES IN HEIGHT WITH A MINIMUM OF 14 GAUGE WIRE. SAFETY FENCE MUST BE MAINTAINED AND IN GOOD

CONDITION AT ALL TIMES.

23.OFF-SITE SPOIL OR BORROW AREAS ON STATE OR FEDERAL PROPERTY MUST HAVE PRIOR

APPROVAL BY COE AND OTHER APPLICABLE STATE, FEDERAL, AND LOCAL AGENCIES;

OTHERWISE APPROVAL MUST BE GRANTED BY THE LOCAL AUTHORITIES. ALL WASTE AND

BORROW AREAS OFF-SITE MUST BE PROTECTED BY SEDIMENT CONTROL MEASURES AND

STABILIZED.

24.FOR SITES WHERE INFILTRATION DEVICES ARE USED FOR THE CONTROL OF STORMWATER,

EXTREME CARE MUST BE TAKEN TO PREVENT RUNOFF FROM UN-STABILIZED AREAS FROM

ENTERING THE STRUCTURE DURING CONSTRUCTION. SEDIMENT CONTROL DEVICES PLACED IN

INFILTRATION AREAS MUST HAVE BOTTOM ELEVATIONS AT LEAST TWO (2) FEET HIGHER THAN

THE FINISH GRADE BOTTOM ELEVATION OF THE INFILTRATION PRACTICE. WHEN CONVERTING A SEDIMENT TRAP TO AN INFILTRATION DEVICE, ALL ACCUMULATED SEDIMENT MUST BE REMOVED

AND DISPOSED OF PRIOR TO FINAL GRADING OF INFILTRATION DEVICE.

25.WHEN A STORM DRAIN SYSTEM OUTFALL IS DIRECTED TO A SEDIMENT TRAP OR SEDIMENT BASIN

AND THE SYSTEM IS TO BE USED FOR TEMPORARILY CONVEYING SEDIMENT LADEN WATER, ALL

STORM DRAIN INLETS IN NON-SUMP AREAS SHALL HAVE TEMPORARY ASPHALT BERMS

CONSTRUCTED AT THE TIME OF BASE PAVING TO DIRECT GUTTER FLOW INTO THE INLETS TO

AVOID SURCHARGING AND OVERFLOW OF INLETS IN SUMP AREAS.

26.THE ANGLE FOR GRADED SLOPES AND FILLS SHALL BE NO GREATER THAN THE ANGLE THAT CAN

BE RETAINED BY VEGETATIVE COVER OR OTHER ADEQUATE EROSION DEVICES OR STRUCTURES.

IN ANY EVENT, SLOPES LEFT EXPOSED WILL, WITHIN 7 CALENDAR DAYS OF COMPLETION OF ANY

PHASE OF GRADING FOR SLOPES STEEPER THAN 3:1 AND 14 DAYS FOR ALL OTHER AREAS, BE

PLANTED OR OTHERWISE PROVIDED WITH TEMPORARY OR PERMANENT GROUNDCOVER,

DEVICES, OR STRUCTURES SUFFICIENT TO RESTRAIN EROSION.

27.PROVISIONS FOR PERMANENT GROUNDCOVER SUFFICIENT TO RESTRAIN EROSION MUST BE

ACCOMPLISHED FOR ALL DISTURBED AREAS WITHIN 15 WORKING DAYS OR 90 CALENDAR DAYS

(WHICHEVER IS SHORTER) FOLLOWING COMPLETION OF CONSTRUCTION OR DEVELOPMENT.

28.CONSTRUCTION, MAINTENANCE AND REMOVAL OF ALL EROSION CONTROL DEVICES ARE THE

RESPONSIBILITY OF THE CONTRACTOR. ALL EROSION CONTROL DEVICES MUST CONFORM TO

THE STANDARDS SET FORTH BY THE GEORGIA DEPARTMENT OF ENVIRONMENTAL QUALITY.

SEQUENCE OF LAND DISTURBANCE:

1. PRECONSTRUCTION CONFERENCE TO BE HELD PRIOR TO THE BEGINNING OF WORK.

2. DETERMINE AND MARK LIMITS OF DISTURBANCE. INSTALL FOD INSPECTION CHECK POINTS, TREE

PROTECTION FENCING, SILT FENCE, AND SILT FENCE OUTLETS.

3. INSTALL PRINCIPAL SEDIMENT BASINS AND TRAPS BEFORE ANY OTHER SIGNIFICANT SITE

GRADING OCCURS. ERECT ADDITIONAL SEDIMENT TRAPS AND SEDIMENT FENCES AS GRADING

TAKES PLACE TO KEEP SEDIMENT CONTAINED ONSITE AT APPROPRIATE LOCATIONS.

4. INSTALL TEMPORARY DIVERSION SWALES TO COLLECT AND CONVEY RUNOFF TO THE SEDIMENT

BASINS AND TRAPS. CONSTRUCT ADDITIONAL DIVERSION SWALES AS NEEDED TO ENSURE

MAXIMUM COLLECTION OF RUNOFF AND TO PREVENT CONCENTRATED UN-TREATED RUNOFF

FROM LEAVING THE SITE. ALL TEMPORARY DIVERSION SWALES SHALL REMAIN IN PLACE UNTIL

THE FINAL STORMDRAIN SYSTEM OR OTHER INTERIM COLLECTION MEASURES ARE INSTALLED.

5. INSTALL KEY RUNOFF CONTROL MEASURES IN CONJUNCTION WITH SEDIMENT BASINS AND

SEDIMENT TRAPS TO DIVERT WATER FROM PLANNED UNDISTURBED AREAS OUT OF THE TRAPS

AND SEDIMENT-LADEN WATER INTO THE BASINS/TRAPS. INSTALL DIVERSIONS ABOVE AREAS TO

BE DISTURBED PRIOR TO GRADING. PLACE NECESSARY PERIMETER DIKES WITH STABLE

OUTLETS BEFORE OPENING MAJOR AREAS FOR DEVELOPMENT. INSTALL ADDITIONAL NEEDED

RUNOFF-CONTROL MEASURES AS GRADING TAKES PLACE.

6. INSTALL THE MAJOR RUNOFF CONVEYANCE SYSTEM WITH INLET AND OUTLET PROTECTION

DEVICES EARLY, AND USE IT TO CONVEY STORM RUNOFF THROUGH THE DEVELOPMENT SITE

WITHOUT CREATING GULLIES AND WASHES. INSTALL INLET PROTECTION FOR STORMDRAINS AS

SOON AS THE DRAIN IS FUNCTIONAL TO TRAP SEDIMENT ON-SITE IN SHALLOW POOLS AND TO

ALLOW FLOOD FLOWS TO SAFELY ENTER THE STORM DRAINAGE SYSTEM. INSTALL OUTLET

PROTECTION AT THE SAME TIME AS THE CONVEYANCE SYSTEM TO PREVENT DAMAGE TO THE

RECEIVING STREAM.

7. STORMWATER PIPING AND ASSOCIATED INLET PROTECTION SHALL BE INSTALLED PRIOR TO

BEGINNING ANY ROADWORK.

8. BEGIN LAND CLEARING AND GRADING AS SOON AS KEY EROSION AND SEDIMENT CONTROL

MEASURES ARE IN PLACE. TOP SOIL SHALL BE REMOVED AND STOCKPILED FOR FUTURE USE.

ALL ROOTS, STUMPS, OR OTHER DEBRIS SHALL BE REMOVED FROM TOPSOIL PRIOR TO

STOCKPILING. ALL STOCKPILES SHALL BE IMMEDIATELY SEEDED PER THE PROJECT

SPECIFICATIONS.

9. ONCE A SCHEDULED DEVELOPMENT AREA IS CLEARED, GRADING SHOULD FOLLOW IMMEDIATELY

SO THAT PROTECTIVE GROUND COVER CAN BE RE-ESTABLISHED QUICKLY. DO NOT LEAVE ANY

AREA BARE OR EXPOSED FOR LONG PERIODS. LEAVE ADJOINING AREAS PLANNED FOR

DEVELOPMENT, OR TO BE USED FOR BORROW AND DISPOSAL, UNDISTURBED AS LONG AS

POSSIBLE TO SERVE AS NATURAL BUFFER ZONES.

10.PERIMETER SLOPE DRAINS SHALL NOT BE INSTALLED UNTIL THE SITE IS STABILIZED UNLESS A

SEDIMENT TRAP IS DESIGNED AND INSTALLED AT THE SLOPE DRAIN OUTLET LOCATION OR

UNLESS A TEMPORARY DIVERSION MEASURE IS INSTALLED TO CONVEY DISCHARGE FROM THE

SLOPE DRAIN OUTLET TO ANOTHER SEDIMENT BASIN OR TRAP ONSITE.

11.RUNOFF CONTROL IS ESSENTIAL DURING THE GRADING OPERATION. TEMPORARY DIVERSIONS, SLOPE DRAINS, AND INLET AND OUTLET PROTECTION SHALL BE INSTALLED AS NEEDED TO

EFFECTIVELY CONTROL EROSION ONSITE DURING GRADING.

12.IMMEDIATELY AFTER LAND CLEARING AND GRADING, SPREAD STOCKPILED TOPSOIL OVER

DISTURBED AREAS AND APPLY SURFACE STABILIZATION ON GRADED AREAS, CHANNELS, DIKES, AND OTHER DISTURBED AREAS. PLACE TEMPORARY SEEDING, INCLUDING MULCHING AND

CRIMPING, ON ALL PERIMETER SWALES AND ALL AREAS WITH SLOPES GREATER THAN 3:1 THAT

ARE TO BE LEFT IDLE FOR MORE THAN 7 DAYS. PLACE TEMPORARY SEEDING, INCLUDING

MULCHING AND CRIMPING, ON ALL OTHER DISTURBED AREAS THAT ARE TO BE LEFT IDLE FOR

MORE THAN 14 DAYS.

13.COORDINATE BUILDING CONSTRUCTION WITH OTHER DEVELOPMENT ACTIVITIES SO THAT ALL

WORK CAN TAKE PLACE IN AN ORDERLY MANNER AND ON SCHEDULE.

14.LANDSCAPING AND FINAL STABILIZATION IS ONE OF THE LAST MAJOR CONSTRUCTION PHASES.

PERMANENT GRASS SHALL BE INSTALLED PER PROJECT SPECIFICATIONS FOR ALL AREAS AT

FINAL GRADE AND IN SEASON. FERTILIZE, WATER AND REPLACE AS REQUIRED TO ESTABLISH A VIGOROUS STAND OF GRASS. TEMPORARY IRRIGATION MAY BE REQUIRED UNTIL GRASS IS FULLY

ESTABLISHED.

15.INSPECT AND MAINTAIN ALL EROSION CONTROL DEVICES EVERY 7 DAYS AND AFTER EACH

SIGNIFICANT RAINFALL EVENT (0.5" OR GREATER).

16.CONTRACTOR MUST MAINTAIN GRASS AS REQUIRED PER PROJECT SPECIFICATIONS. THIS

INCLUDES BUT IS NOT LIMITED TO IRRIGATING AND MOWING GRASS AND RE-SEEDING /

RE-SODDING BARE OR ERODED AREAS.

17. AFTER COMPLETION OF CONSTRUCTION AND THE SITE IS STABILIZED, REMOVE ALL

ACCUMULATED SEDIMENT FROM SILT FENCE AND OTHER EROSION CONTROL MEASURES AND

SPREAD EVENLY ACROSS THE SITE. GRASS THESE AREAS IMMEDIATELY AND REMOVE ALL

EROSION CONTROL MEASURES.

18.SINCE UNDERGROUND STORM PIPE WILL BE USED TO CONVEY SEDIMENT-LADEN WATER DURING

CONSTRUCTION, THE PIPES SHOULD BE CLEANED USING HIGH PRESSURE WATER AND

DISCHARGED THROUGH A FILTER BAG ONCE THE SITE IS FULLY STABILIZED.

19.IF SEDIMENT CAN NOT BE SPREAD EVENLY ACROSS THE SITE OR STOCKPILED IN PERMANENT

SPOIL STORAGE AREAS BECAUSE THE SITE HAS ALREADY BEEN STABILIZED / VEGETATED,

CONTRACTOR MUST BE RESPONSIBLE FOR TRANSPORTING SEDIMENT OFFSITE AND DISPOSING

OF SEDIMENT IN ACCORDANCE WITH ALL LOCAL, STATE, AND FEDERAL REGULATIONS.

TEMPORARY SEEDING:

CONSTRUCTION SPECIFICATIONS

COMPLETE GRADING BEFORE PREPARING SEEDBEDS AND INSTALL ALL NECESSARY EROSION

CONTROL PRACTICES SUCH AS DIKES, WATERWAYS, AND BASINS. MINIMIZE STEEP SLOPES

BECAUSE THEY MAKE SEEDBED PREPARATION DIFFICULT AND INCREASE THE EROSION HAZARD. IF SOILS BECOME COMPACTED DURING GRADING, LOOSEN THEM TO A DEPTH OF 6-8 INCHES USING A

RIPPER, HARROW, OR CHISEL PLOW.

SEEDBED PREPARATION

GOOD SEEDBED PREPARATION IS ESSENTIAL TO SUCCESSFUL PLANT ESTABLISHMENT. A GOOD

SEEDBED IS WELL-PULVERIZED, LOOSE, AND UNIFORM. WHERE HYDROSEEDING METHODS ARE

USED, THE SURFACE MAY BE LEFT WITH A MORE IRREGULAR SURFACE OF LARGE CLODS AND

STONES.

LIMING

APPLY LIMESTONE ACCORDING TO SOIL TEST REQUIREMENTS. IF THE PH (ACIDITY) OF THE SOIL IS NOT KNOWN, AN APPLICATION OF GROUND AGRICULTURAL LIMESTONE AT THE RATE OF 1 TO 1-1/2

TONS/ACRE ON COARSE-TEXTURE SOILS AND 2 TO 3 TONS/ACRE ON FINE-TEXTURED SOILS IS

USUALLY SUFFICIENT. APPLY LIMESTONE UNIFORMLY AND INCORPORATE INTO THE TOP 4-6 INCHES

OF SOIL. SOILS WITH A PH OF 6 OR HIGHER NEED NOT BE LIMED.

FERTILIZER

BASE APPLICATION RATES ON SOILS TESTS. WHEN THESE ARE NOT POSSIBLE, APPLY A 10-10-10 GRADE FERTILIZER AT 700-1,000 LB/ACRE. BOTH FERTILIZER AND LIME SHOULD BE INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. IF A HYDRAULIC SEEDER IS USED, DO NOT MIX SEED AND

FERTILIZER MORE THAN 30 MINUTES BEFORE APPLICATION.

SURFACE ROUGHENING

IF RECENT TILLAGE OPERATIONS HAVE RESULTED IN A LOOSE SURFACE, ADDITIONAL ROUGHENING MAY NOT BE REQUIRED, EXCEPT TO BREAK UP LARGE CLODS. IF RAINFALL CAUSES THE SURFACE

TO BECOME SEALED OR CRUSTED, LOOSEN IT JUST PRIOR TO SEEDING BY DISKING, RAKING,

HARROWING, OR OTHER SUITABLE METHODS. GROOVE OR FURROW SLOPES STEEPER THAN 3:1 ON

THE CONTOUR BEFORE SEEDING.

PLANT SELECTION

SELECT AN APPROPRIATE SPECIES FROM THE SEEDING DETAILS BASED ON THE TIME OF YEAR AND

HUNTER ARMY AIRFIELD SEEDING SPECIFICATION.

SEEDING

EVENLY APPLY SEED USING A CYCLONE SEEDER (BROADCAST), DRILL, CULTIPACKER SEEDER, OR

HYDROSEEDER. USE SEEDING RATES FROM THE SEEDING DETAILS. BROADCAST SEEDING AND

HYDROSEEDING ARE APPROPRIATE FOR STEEP SLOPES WHERE EQUIPMENT CANNOT BE DRIVEN.

HAND BROADCASTING IS NOT RECOMMENDED BECAUSE OF THE DIFFICULTY IN ACHIEVING A

UNIFORM DISTRIBUTION.

SMALL GRAINS SHOULD BE PLANTED NO MORE THAN 1 INCH DEEP, AND GRASSES AND LEGUMES NO MORE THAN 1/2 INCH. BROADCAST SEED MUST BE COVERED BY RAKING OR CHAIN DRAGGING, AND

THEN LIGHTLY FIRMED WITH A ROLLER OR A CULTIPACKER. HYDROSEEDING MIXTURES SHOULD

INCLUDE A WOOD FIBER (CELLULOSE) MULCH

MULCHING

THE USE OF AN APPROPRIATE MULCH WILL HELP ENSURE ESTABLISHMENT UNDER NORMAL

CONDITIONS, AND IS ESSENTIAL TO SEEDING SUCCESS UNDER HARSH SITE CONDITIONS. HARSH

SITE CONDITIONS INCLUDE:

1. SEEDING IN FALL FOR WINTER COVER (WOOD FIBER MULCHES ARE NOT CONSIDERED

ADEQUATE)

2. SLOPES STEEPER THAN 3:1

3. EXCESSIVELY HOT OR DRY WEATHER

4. ADVERSE SOILS (SHALLOW, ROCKY, OR HIGH IN CLAY OR SAND)

5. AREAS RECEIVING CONCENTRATED FLOW

IF THE AREA TO BE MULCHED IS SUBJECT TO CONCENTRATED WATER FLOW, AS IN CHANNELS,

ANCHOR MULCH WITH NETTING.

MAINTENANCE

RESEED AND MULCH WHERE SEEDLING EMERGENCE IS POOR, OR WHERE EROSION OCCURS, AS

SOON AS POSSIBLE. DO NOT MOW. PROTECT FROM TRAFFIC AS MUCH AS POSSIBLE.

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HARDWARE CLOTH AND GRAVEL INLET PROTECTION

CONSTRUCTION SPECIFICATIONS

1. UNIFORMLY GRADE A SHALLOW DEPRESSION APPROACHING THE INLET.

2. DRIVE 5-FOOT STEEL POSTS 2 FEET DEEP INTO THE GROUND SURROUNDING THE INLET.

SPACE POSTS EVENLY AROUND THE PERIMETER OF THE INLET, A MAXIMUM OF 4 FEET APART.

3. SURROUND THE POSTS WITH WIRE MESH HARDWARE CLOTH. SECURE THE WIRE MESH TO

THE STEEL POSTS AT THE TOP, MIDDLE, AND BOTTOM. PLACING A 2-FOOT FLAP OF THE WIRE

MESH UNDER THE GRAVEL FOR ANCHORING IS RECOMMENDED.

4. PLACE CLEAN GRAVEL (DOT #57 STONE) ON A 2:1 SLOPE WITH A HEIGHT OF 16 INCHES

AROUND THE WIRE, AND SMOOTH TO AN EVEN GRADE.

5. ONCE THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE ACCUMULATED

SEDIMENT, AND ESTABLISH FINAL GRADING ELEVATIONS.

6. COMPACT THE AREA PROPERLY AND STABILIZE IT WITH GROUND COVER.

MAINTENANCE

1. INSPECT INLETS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT (1/2 INCH OR GREATER)

RAINFALL EVENT. CLEAR THE MESH WIRE OF ANY DEBRIS OR OTHER OBJECTS TO PROVIDE

ADEQUATE FLOW FOR SUBSEQUENT RAINS. TAKE CARE NOT TO DAMAGE OR UNDERCUT THE

WIRE MESH DURING SEDIMENT REMOVAL. REPLACE STONE AS NEEDED.

ROCK PIPE INLET PROTECTION:

CONSTRUCTION SPECIFICATIONS

1. CLEAR THE AREA OF ALL DEBRIS THAT MIGHT HINDER EXCAVATION AND DISPOSAL OF SPOIL.

2. INSTALL THE CLASS B OR CLASS 1 RIPRAP IN A SEMI-CIRCLE AROUND THE PIPE INLET. THE

STONE SHOULD BE BUILT HIGHER ON EACH END WHERE IT TIES TO THE EMBANKMENT. THE

MINIMUM CREST WIDTH OF THE RIPRAP SHOULD BE 3 FEET, WITH A MINIMUM BOTTOM WIDTH

OF 11 FEET. THE MINIMUM HEIGHT SHOULD BE 2 FEET, BUT ALSO 1 FOOT LOWER THAN THE

SHOULDER OF THE EMBANKMENT OR DIVERSIONS.

3. A 1 FOOT THICK LAYER OF DOT #57 STONE SHOULD BE PLACED ON THE OUTSIDE SLOPE OF

THE RIPRAP.

4. THE SEDIMENT STORAGE AREA SHOULD BE EXCAVATED AROUND THE OUTSIDE OF THE STONE

HORSESHOE 18 INCHES BELOW NATURAL GRADE.

5. WHEN THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, FILL DEPRESSION AND

ESTABLISH FINAL GRADING ELEVATIONS, COMPACT AREA PROPERLY, AND STABILIZE WITH

GROUND COVER.

MAINTENANCE

1. INSPECT ROCK PIPE INLET PROTECTION AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT (1/2

INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. REMOVE SEDIMENT AND

RESTORE THE SEDIMENT STORAGE AREA TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT

HAS ACCUMULATED TO ONE-HALF THE DESIGN DEPTH OF THE TRAP. PLACE THE SEDIMENT

THAT IS REMOVED IN THE DESIGNATED DISPOSAL AREA AND REPLACE THE CONTAMINATED

PART OF THE GRAVEL FACING.

2. CHECK THE STRUCTURE FOR DAMAGE. ANY RIP-RAP DISPLACED FROM THE STONE

HORSESHOE MUST BE REPLACED IMMEDIATELY.

3. AFTER ALL THE SEDIMENT-PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED,

REMOVE THE STRUCTURE AND ALL THE UNSTABLE SEDIMENT. SMOOTH THE AREA TO BLEND

WITH THE ADJOINING AREAS AND PROVIDE PERMANENT GROUND COVER.

TEMPORARY SILT FENCE:

CONSTRUCTION SPECIFICATIONS

MATERIALS:

1. USE A SYNTHETIC FILTER FABRIC OF AT LEAST 95% BY WEIGHT OF POLYOLEFIN OR

POLYESTER, WHICH IS CERTIFIED BY THE MANUFACTURER OR SUPPLIER AS CONFORMING TO

THE REQUIREMENTS OF ASTM D 6461. SYNTHETIC FILTER FABRIC SHOULD CONTAIN

ULTRAVIOLET RAY INHIBITORS AND STABILIZERS TO PROVIDE A MINIMUM OF 6 MONTHS OF

EXPECTED USABLE CONSTRUCTION LIFE AT AT TEMPERATURE RANGE OF 0 TO 120° F.

2. ENSURE THE POSTS FOR SEDIMENT FENCES ARE WOOD, OR 1.25 LB/LINEAR FT STEEL WITH A MINIMUM LENGTH OF 4 FT. MAKE SURE THAT STEEL POSTS HAVE PROJECTIONS TO FACILITATE

FASTENING THE FABRIC.

3. FOR REINFORCEMENT OF STANDARD STRENGTH FILTER FABRIC, USE WIRE FENCE WITH A

MINIMUM 14 GAUGE AND A MAXIMUM MESH SPACING OF 6-INCHES.

CONSTRUCTION:

1. CONSTRUCT THE SEDIMENT BARRIER OF STANDARD STRENGTH OR EXTRA STRENGTH

SYNTHETIC FILTER FABRICS.

2. ENSURE THAT THE HEIGHT OF THE SEDIMENT FENCE DOES NOT EXCEED 30-INCHES ABOVE

THE GROUND SURFACE. (HIGHER FENCES MAY IMPOUND VOLUMES OF WATER SUFFICIENT TO

CAUSE FAILURE OF THE STRUCTURE.)

3. CONSTRUCT THE FILTER FABRIC FROM A CONTINUOUS ROLL CUT TO THE LENGTH OF THE

BARRIER TO AVOID JOINTS. WHEN JOINTS ARE NECESSARY, SECURELY FASTEN THE FILTER

CLOTH ONLY AT A SUPPORTED POST WITH A MINIMUM 4-FT OF OVERLAP TO THE NEXT POST.

4. IF REQUIRED IN THE EROSION, SEDIMENTATION AND POLLUTION CONTROL PLAN, SUPPORT

STANDARD STRENGTH FILTER FABRIC BY WIRE MESH FASTENED SECURELY TO THE UPSLOPE

SIDE OF THE POSTS. EXTEND THE WIRE MESH SUPPORT TO THE BOTTOM OF THE TRENCH.

FASTEN THE WIRE REINFORCEMENT, THEN FABRIC ON THE UPSLOPE SIDE OF THE FENCE

POST. WIRE OR PLASTIC ZIP TIES SHOULD HAVE A MINIMUM 50 POUND TENSILE STRENGTH.

5. WHEN A WIRE MESH SUPPORT FENCE IS USED, SPACE POSTS AT A MAXIMUM OF 8 FEET

APART. SUPPORT POSTS SHOULD BE DRIVEN SECURELY INTO THE GROUND A MINIMUM OF

24-INCHES.

6. EXTRA STRENGTH FILTER FABRIC WITH 6 FEET POST SPACING DOES NOT REQUIRE WIRE

MESH SUPPORT FENCE. SECURELY FASTEN THE FILTER FABRIC DIRECTLY TO THE POSTS.

WIRE OR PLASTIC ZIP TIES SHOULD HAVE A MINIMUM 50 POUND TENSILE STRENGTH.

7. EXCAVATE A TRENCH APPROXIMATELY 4 INCHES WIDE AND 6 INCHES DEEP ALONG THE

PROPOSED LINE OF POSTS AND UPSLOPE FROM THE BARRIER.

8. PLACE 8 INCHES OF THE FABRIC ALONG THE BOTTOM AND SIDE OF THE TRENCH.

9. BACKFILL THE TRENCH WITH SOIL PLACED OVER THE FILTER FABRIC AND COMPACT.

THOROUGH COMPACTION OF THE BACKFILL IS CRITICAL TO SILT FENCE PERFORMANCE.

10. DO NOT ATTACH FILTER FABRIC TO EXISTING TREES.

MAINTENANCE

1. INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY

REQUIRED REPAIRS IMMEDIATELY.

2. SHOULD THE FABRIC OF THE SILT FENCE COLLAPSE, TEAR, DECOMPOSE, OR BECOME

INEFFECTIVE, REPLACE IT PROMPTLY.

3. REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME

FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE FENCE. TAKE CARE TO AVOID

UNDERMINING THE FENCE DURING CLEANOUT.

4. REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE AREA

TO GRADE AND STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN

PROPERLY STABILIZED.

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File details come from the government source that posted it. Updated Aug 10, 2022.