ACPh1RTAPlansVol120171109_-_Part_10_of_17.pdf

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PROPERTY OF UNITED STATES GOVERNMENT, FOR OFFICIAL USE ONLY (FOUO). COPYING, DISSEMINATION, AND DISTRIBUTION TO UNAUTHORIZED INDIVIDUALS PROHIBITED.

CG501

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NOT TO SCALE

FLARED END-SECTION FOR CONCRETE PIPE CULVERTS

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NOT TO SCALE

FLARED END SECTION FOR ELLIPTICAL PIPE

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NOTES:

1. SHAPING OF MANHOLE AND INLET INVERTS IN ACCORDANCE WITH THIS

DRAWING IS TO APPLY TO THOSE STRUCTURES SPECIFIED ON PLANS OR

WHERE INVERT OF PIPE IS ABOVE INVERT OF STRUCTURE.

2. MANHOLE OR DROP INLET IS TO BE FORMED AND CONSTRUCTED IN

ACCORDANCE WITH APPLICABLE STANDARD OR SPECIAL DRAWING.

CAST-IN-PLACE CONCRETE PER SECTION 03 30 00.00 10. THE

SURFACE SHALL BE LEFT SMOOTH BY MEANS OF HAND TROWELLING.

NONE OF THE COARSE AGGREGATE SHALL REMAIN EXPOSED.

3. DETAILS OF INVERT SHAPING AS SHOWN HEREON ARE FOR EXAMPLE

PURPOSES ONLY. EACH MANHOLE OR DROP INLET IS TO BE SHAPED

INDIVIDUALLY TO BEST FIT THE PARTICULAR INLET AND OUTLET

CONFIGURATION AND FLOW LINES.

US Army Corps of Engineers ®

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PROPERTY OF UNITED STATES GOVERNMENT, FOR OFFICIAL USE ONLY (FOUO). COPYING, DISSEMINATION, AND DISTRIBUTION TO UNAUTHORIZED INDIVIDUALS PROHIBITED.

NOT TO SCALE

METHOD OF SHAPING MANHOLE AND INLET INVERTS

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NOTES:

1. THE "H" DIMENSION SHOWN ON THE STANDARDS AND

SPECIFIED ON THE PLANS WILL BE MEASURED FROM THE

INVERT OF THE OUTFALL PIPE TO THE TOP OF THE

STRUCTURE. PLAN "H" DIMENSIONS ARE APPROXIMATE

ONLY FOR ESTIMATING PURPOSES AND THE ACTUAL

DIMENSIONS SHALL BE DETERMINED BY THE CONTRACTOR

FROM FIELD CONDITIONS.

2. WHEN SPECIFIED ON THE PLANS THE INVERT IS TO BE

SHAPED IN ACCORDANCE WITH STANDARD AS SHOWN

ON SHEET CG502.

3. IN THE EVENT THE INVERT OF THE OUTFALL PIPE IS HIGHER

THAN THE BOTTOM OF THE STRUCTURE, THE INVERT OF

THE STRUCTURE SHALL BE SHAPED WITH CEMENT MORTAR

TO PREVENT STANDING OR PONDING OF WATER IN THE

STRUCTURE.

4. STEPS ARE TO BE PROVIDED WHEN H IS 4'-0" OR GREATER.

FOR DETAILS SEE SHEET CG501.

5. THIS ITEM MAY BE PRECAST OR CAST-IN-PLACE.

6. CAST-IN-PLACE CONCRETE PER SECTION 03 30 00.00 10 IS

TO BE USED. PRECAST CONCRETE IS TO BE 4000 PSI.

7. ANY ALTERNATE METHODS OF ANCHORAGE MEETING

THE APPROVAL OF THE CONTRACTING OFFICER'S

REPRESENTATIVE MAY BE SUBSTITUTED

FOR THE CAST IRON LUGS AS SHOWN HEREON.

8. 3" DIAMETER WEEP HOLE WITH 12"x12" PLASTIC HARDWARE

CLOTH

" MESH OR GALVANIZED STEEL WIRE, MINIMUM WIRE

DIAMETER 0.03", NUMBER 4 MESH HARDWARE CLOTH

ANCHORED FIRMLY TO THE OUTSIDE OF THE STRUCTURE.

9. DUMP NO WASTE DRAINS TO WATERWAY LETTERING IS

REQUIRED ON ALL GRATES. LOCATION OF LETTERING

MAY VARY BY MANUFACTURER.

CENTER POINT OF STRUCTURE

SEE SHEET CG601 FOR

COORDINATES AND GRATE ELEVATION

NOT TO SCALE

DROP INLET

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STORM

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PRECAST CONCRETE MANHOLE DETAIL

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MANHOLE FRAME AND COVER

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MANHOLE FRAME

AND COVER

CLASS B CONCRETE

CAST IN PLACE

PRECAST

REINFORCED

CONCRETE BASE

COARSE AGGREGATE SIZE #57

8"

5"

2" (TYP.)

6"

6"

3" MINIMUM7"

REINFORCING STEEL AS

PER AASHTO M199

PRECAST REINFORCED CONCRETE MANHOLE

SECTIONS SHALL CONFORM TO AASHTO M199

3 FOOT

PRECAST REINF.

CONC.

MANHOLE

CONICAL TOP

PRECAST REINF. CONCRETE

MANHOLE RISERS - 1 FOOT,

2 FEET, 3 FEET, OR 4 FEET

LENGTHS AS REQUIRED

RISER HEIGHT

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"O" RING RUBBER

GASKET

EXTERIOR

WALL

3"

1"

1/4"

6"

PRECAST MANHOLE RISER JOINT

5"

2 3/4" (TYP.)

2 3/4" (TYP.)

3"

30"

30"

OPENING

6"

52 1/4"

52 3/4"

58"

PLAN

48" PRECAST REINFORCED

NOTE:

USE IN LIEU OF CONICAL SECTION WHEN

HEIGHT OF MANHOLE IS LESS THAN 4 FEET

GROOVE FOR "O" RING

RUBBER GASKET

4"

4"

CONCRETE MANHOLE FLAT TOP

A1

A2

1. STEPS WILL BE REQUIRED IN ALL STRUCTURES WITH A DEPTH OF

4'-0" OR GREATER UNLESS OTHERWISE NOTED ON THE PLANS.

2. ALL STEPS SHALL PROTRUDE 4

" FROM INSIDE FACE OF

STRUCTURE WALL.

3. IF THERE IS A NEED TO CHANGE STEP SPACING, MAXIMUM STEP

SPACING TO BE 16" C-C.

4. STEPS SHALL WITHSTAND A MINIMUM FORCE OF 300 POUNDS

WHEN EXTENDED 4

" FROM THE FACE OF THE SUPPORT.

5. STEPS ARE TO BE VERTICALLY ALIGNED AND UNIFORMLY SPACED

FOR THE ENTIRE DEPTH OF ANY STRUCTURE.

6. STEPS MAY BE CAST IN PLACE, MORTARED INTO HOLES

PROVIDED BY THE FABRICATOR, OR DRIVEN.

7. ALL STEPS INSTALLED SHALL BE PROVIDED WITH SLIP-RESISTANT

SURFACES SUCH AS BUT NOT LIMITED TO, CORRUGATED

KNURLED, OR DIMPLED SURFACES.

NOT TO SCALE

SECTION

A1

NOT TO SCALE

SECTION

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FOUNDATION OF PIPE SHALL BE FREE OF PROTRUDING ROCK. IF

ROCK IS ENCOUNTERED, THE TRENCH SHALL BE OVER-EXCAVATED A

MINIMUM OF 6" AND BACKFILLED WITH COMPACTED, SUITABLE

MATERIAL.

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0.10 x O.D.

OF PIPE

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SUITABLE BACKFILL

MATERIAL (SEE SPECS. FOR

COMPACTION REQUIREMENTS)

MAXIMUM

SLOPE PER

OSHA STANDARDS

PIPE O.D. + (3'-0")

NOT TO SCALE

TRENCH DETAIL

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NOTE:

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NOTES:

STEPS

SEE NOTES BELOW

AutoCAD SHX Text 4'-0"

AutoCAD SHX Text 24"

AutoCAD SHX Text 5"

AutoCAD SHX Text 6"

AutoCAD SHX Text

12" (TYP.)

AutoCAD SHX Text 1"

AutoCAD SHX Text 1"

AutoCAD SHX Text 1/4"

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NARRATIVE

THE PURPOSE OF THE PROJECT IS TO CONSTRUCT AN AVIATION COMPLEX WITH ASSOCIATED ACCESS ROAD, ELEVATED TAXIWAY, PARKING AREA, AIRCRAFT PARKING APRON, MAINTENANCE HANGAR AND UTILITY

STRUCTURES. THE PROJECT SITE AREA IS SURROUNDED BY RIPARIAN AND TIDAL WETLANDS AND LOCATED

SOUTH OF THE EXISTING RUNWAY IN FELKER ARMY FIELD, NEWPORT NEWS CITY, VIRGINIA. TOTAL 46 ACRES

(APPROXIMATELY) LAND WILL BE DISTURBED DURING CONSTRUCTION PERIOD AND SUBJECT TO EROSION AND

SEDIMENT CONTROL REGULATIONS. THE LAND DISTURBED TEMPORARILY WILL BE RESTORED TO ITS ORIGINAL

CONDITION OR BETTER AT THE END OF THE PROJECT. PRIMARY DEVELOPMENT SITE, APPROXIMATELY 27 ACRE

AREA WILL BE DISTURBED PERMANENTLY. PERMANENT BMPS ARE PROPOSED TO ADDRESS WATER QUALITY AND

QUANTITY REQUIREMENTS FOR THE PRIMARY DEVELOPMENT SITE ONLY.

LAND USE IN THE VICINITY IS A TRAINING AREA WHICH INVOLVES HEAVY VEHICLE AND AS A RESULT , THE AREA IS

HEAVILY COMPACTED, DESCRIBED BY NRCS AS MOSTLY URBAN LAND. THE UPPER SOIL IN THE PROJECT AREA IS

MAPPED AS SANDY CLAY (CL) WITH VARYING AMOUNT OF SILT AND TRACE OF ORGANICS. THE UPPER SOILS ARE

CONSIDERED MODERATELY LOW TO SOMEWHAT POORLY DRAINED WITH PERMEABILITY RATES RANGES

BETWEEN 0.008 INCHES/HOUR TO 0.083 INCHES/HOUR.

EROSION AND SEDIMENT CONTROL PLAN WILL BE IMPLEMENTED IN MULTIPLE STAGES FOLLOWING

CONSTRUCTION SEQUENCES. AT THE BEGINNING OF THE PROJECT THE PERIMETER CONTROLS I.E.

CONSTRUCTION ENTRANCE (#3.02)*, SILT FENCE WITH WIRE SUPPORT (#3.05)*, AND DIVERSIONS (#3.12)* WILL BE

INSTALLED. DURING CONSTRUCTION, IN ADDITION TO PERIMETER CONTROL OTHER ESC ITEMS I.E. STORMDRAIN

INLET PROTECTION (#3.07)*, ROCK CHECK DAMS(#3.20)*, GRADING STABILIZATION BY VEGETATION (#3.31, #3.32, #3.33, #3.34) * AND MULCH (#3.35) * WILL BE INSTALLED AS SOON AS THE FINISHED GRADE IS REACHED. ROCK

CHECK DAMS (#3.20)*, TEMPORARY DIVERSION DIKE (#3.09)* AND TEMPORARY SEDIMENT TRAP(#3.13)* WILL BE

USED LOCALLY AS REQUIRED BY THE ACTUAL SITE CONDITIONS DURING CONSTRUCTION.

THE SITE IS RELATIVELY FLAT AND CURRENTLY AT A LOWER ELEVATION ON AVERAGE THAN THE BASE FLOOD

ELEVATION. AS A RESULT, A CONSIDERABLE AMOUNT OF FILL WILL NEED TO BE BROUGHT INTO THE SITE TO

BRING THE ELEVATION UP FOR PROPER DRAINAGE. FILL WILL BE PLACED IN LAYERS NOT TO EXCEED 9 INCHES IN

DEPTH AND COMPACTED. TEMPORARY DIVERSIONS WILL BE MAINTAINED AT THE TOP OF THE FILL NOT TO

DESTABILIZE THE SLOPE .

MULTIPLE STAGES OF CONSTRUCTION ARE RECOMMENDED TO MINIMIZE LAND DISTURBANCE AT ONCE AND

DURATION WITHOUT GROUND COVER. MULTIPLE TEMPORARY SEDIMENT TRAPS AND SILT FENCE WITH WIRE

SUPPORT ARE THE PRIMARY SEDIMENT AND EROSION CONTROL MEASURE USED IN THIS PROJECT SINCE

CENTRALIZED SEDIMENT BASINS ARE NOT FEASIBLE DUE TO SITE CONSTRAINTS (LARGE FLAT SITE AREA, DIFFICULT TO CONVEY SEDIMENT LADEN RUNOFF TO THE BASINS DUE LACK OF AVAILABLE HEAD DURING FILLING

ETC.) PERMANENT BMP SAND FILTER/DETENTION BASIN WITHOUT FOREBAY AND RISER STRUCTURE MAY BE USED

AS A TEMPORARY SEDIMENT TRAP FOR THE APRON AREA ONCE THE STORMDRAIN SYSTEM IS IN PLACE. A

STONE SECTION OF THE EMBANKMENT WILL BE USED AS OUTLET FOR THE SEDIMENT TRAP. THE CREST OF THE

STONE OUTLET MUST BE AT LEAST 1.0 FOOT BELOW THE TOP OF THE EARTH EMBANKMENT. THIS PROPOSED

BMP CAN BE USED SUBJECT TO VDEQ APPROVAL SINCE CONTRIBUTING DRAINAGE AREA EXCEEDS THE 3-ACRE

LIMIT. SILT FENCE WITH WIRE SUPPORT WILL BE INSTALLED DOWN GRADIENT OF GRADING AND CLEARING

ACTIVITIES FOR THE ENTIRE SITE ALONG THE SITE PERIMETER AND REMAIN IN PLACE THROUGHOUT THE

CONSTRUCTION.

ADDITIONAL ROWS OF SILT FENCE WILL BE NECESSARY ALONG THE GABION WALL AND/OR VEGETATIVE FILTER

STRIPS AS THE FILL GETS PROGRESSED. THESE ADDITIONAL SILT FENCES WILL BE MOVED/REMOVED AND RESET

AS THE EMBANKMENT IS PLACED. THE RECOMMENDED SEQUENCE IS SHOWN ON THE SKETCH.

INSTALL MULTIPLE ROWS OF SILT FENCE ON LONG SLOPES 150 TO 325 FEET APART TO BREAK UP FLOW.

CONTRACTOR MAY NEED TO MAINTAIN MULTIPLE TEMPORARY SEDIMENT TRAPS IF HEAVY CONCENTRATED FLOW

IS UNAVOIDABLE, ONE AT EACH PHASE OF SITE GRADING. TEMPORARY COLLECTOR CHANNELS SHOULD BE

PROVIDED TO DIRECT THE MUDDY RUNOFF TO ENTER A TRAP. MAXIMUM ALLOWABLE CONTRIBUTING DRAINAGE

AREA TO EACH TRAP SHALL BE LESS THAN 3 ACRES.

1. ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE

CHECKED FOR STABILITY AND OPERATION FOLLOWING EVERY

RUNOFF-PRODUCING RAINFALL BUT IN NO CASE LESS THAN ONCE

EVERY WEEK. ANY NEEDED REPAIRS WILL BE MADE IMMEDIATELY TO

MAINTAIN ALL PRACTICES AS DESIGNED AND INSTALLED FOR THEIR

APPROPRIATE PHASE OF THE PROJECT.

2. TEMPORARY SEDIMENT TRAP , IF USED, WILL BE CLEANED OUT WHEN

THE LEVEL OF SEDIMENT ACCUMULATES TO ONE HALF OF THE WET

VOLUME. FILTER STONE CHOKED WITH SEDIMENT SHALL BE

REMOVED AND CLEANED OR REPLACED.

3. SEDIMENT WILL BE REMOVED FROM INLET PROTECTION DEVICE

WHEN STORAGE CAPACITY HAS BEEN APPROXIMATELY 50% FILLED.

GRAVEL WILL BE CLEANED OR REPLACED WHEN THE SEDIMENT POOL

NO LONGER DRAINS PROPERLY.

4. SEDIMENT WILL BE REMOVED FROM BEHIND THE SUPER SILT FENCE

WHEN IT BECOMES ABOUT 0.5 FT DEEP AT THE FENCE. THE

SEDIMENT FENCE WILL BE REPAIRED AS NECESSARY TO MAINTAIN A

BARRIER.

5. ALL SEEDED AREAS WILL BE FERTILIZED, RESEEDED AS NECESSARY,

AND MULCHED ACCORDING TO SPECIFICATIONS IN THE VEGETATIVE

PLAN TO MAINTAIN A VIGOROUS, DENSE VEGETATIVE COVER.

CONSTRUCTION SCHEDULE

MAINTENANCE PLAN

1. STAKE OUT LIMITS OF DISTURBANCE AND NOTIFY VIRGINIA DEQ AND USACE STAFF AT LEAST 7 DAYS PRIOR

TO COMMENCING ANY LAND DISTURBING ACTIVITY.

2. INSTALL SILT FENCE (WITH WIRE SUPPORT) ALONG THE PERIMETER AS SHOWN ON THE PLAN. INSTALL ALL

TEMPORARY SEDIMENT TRAPS AS SHOWN ON THE PLAN. THE LARGEST SEDIMENT TRAP CAN ONLY BE USED

IF VDEQ APPROVE THE WAIVER REQUEST OF MAXIMUM DRAINAGE AREA LIMIT (< 3.0 ACRE). INSTALL BOTH

STABILIZED CONSTRUCTION ENTRANCES AS SHOWN ON THE PLAN. IT WILL REDUCE THE AMOUNT OF MUD

TRANSPORTED BY THE CONSTRUCTION VEHICLES.

3. COMPLETE SITE CLEARING AND GRUBBING AND DEMOLITION AS NEEDED WITHIN CONSTRUCTION AREA.

4. INSTALL SILT FENCE (WITH WIRE SUPPORT) ALONG THE TOE OF THE TEMPORARY CAUSEWAYS AND PROVIDE

CULVERTS TO MAINTAIN CROSS DRAINAGE. PROVIDE CULVERT INLET PROTECTION.

5. SUGGESTED CONSTRUCTION STAGING AND STORAGE AREA ON THE NORTHWEST CORNER OF THE SITE.

6. FINISH THE SLOPES (VEGETATIVE FILTER STRIP) AROUND THE SITE AND VEGETATE AND MULCH IMMEDIATELY.

INSTALL THE GABION WALL AS SHOWN ON THE PLAN. (GABION WALL WITH SILT FENCE WITH WIRE SUPPORT

INSTALLED ALONG INSIDE FACE OF THE WALL MAY BE USED AS SEDIMENT BASIN. FLOWS EXCEEDING THE

SEDIMENT STORAGE EVENT WILL OVERTOP THE SILT FENCE AND EXIT THE SITE THROUGH THE GABION WALL.

THIS METHOD IS APPLICABLE SUBJECT TO VDEQ APPROVAL). INSTALL SAND FILTER ADJACENT TO GABION

WALL AS SHOWN ON THE PLAN (BACK OF THE HANGAR BUILDING AND NORTH OF POV PARKING LOT). FILL UP

THE EASTERN HALF OF THE SITE (APRON, HANGAR, GOV PARKING LOT AND ACCESS ALLEY) ACCORDING TO

STANDARDS AND SPECIFICATIONS. MAINTAIN DIVERSIONS ALONG TOP OF FILL SLOPE DAILY.

7. CONSTRUCT STORM SEWER SYSTEM AND CONSTRUCT ALL UTILITIES. BEGIN THE INSTALLATION AT THE

DOWNSTREAM END AND WORK UPSTREAM. UPON INSTALLING STORM INLET PROVIDE INLET PROTECTION

DEVICES. BEGIN THE INSTALLATION AT THE DOWNSTREAM END AND WORK UPSTREAM.

8. COMPLETE FINAL GRADING FOR APRON PAVEMENT, HANGAR BUILDING, ACCESS ALLEY, GOV PARKING AREA.

ORGANIC MATERIALS ARE NOT DESIRED UNDER PAVED AREA. THEREFORE, ANY DEGRADABLE MULCH USED

FOR TEMPORARY SITE STABILIZATION MUST BE REMOVED BEFORE PAVING THE AREAS.

9. FOOT PRINT OF THE HANGAR AND ADMINISTRATION BUILDING WILL BE GRADED TEMPORARILY AND

VEGETATED TILL THE STARTING OF THE BUILDING CONSTRUCTION. A TEMPORARY STORM DRAIN SYSTEM

TEMPORARILY DISCHARGES TO THE PROPOSED GABION WALL VIA STORMDRAIN PIPES.

10. PROVIDE INLET PROTECTION AT THE PROPOSED INLETS THAT COLLECT ELEVATED TAXIWAY RUNOFF. ALSO

PROVIDE OUTLET PROTECTION AT THE OUTFALLS OF THE TWO STORMDRAIN PIPES.

11. FILL UP THE WESTERN HALF OF THE SITE (ENTRY POINT, POV PARKING LOT ADMINISTRATION BUILDING)

ACCORDING TO STANDARDS AND SPECIFICATIONS. MAINTAIN DIVERSIONS ALONG TOP OF FILL SLOPE DAILY.

12. CONSTRUCT STORMDRAIN SYSTEM AND INSTALL INLET PROTECTION AT THE DOCKING AREA ONCE

APPROACHING THE FINAL GRADING .

13. ANY PERMANENT SAND FILTERS RECEIVING RUNOFF PRIOR TO THE COMPLETION OF CONSTRUCTION SHALL

BE RESTORED TO ORIGINAL CONDITION.

14. REMOVE ALL SEDIMENT CONTROL MEASURES WITH THE APPROVAL OF VDEQ SITE INSPECTOR.

15. STABILIZE AREAS DISTURBED BY THE REMOVAL OF THE SEDIMENT CONTROL DEVICES.

1. UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL

PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND

SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA

ADMINISTRATIVE CODE: VAC25-840-40 SOIL EROSION AND SEDIMENT CONTROL.

2. LOCAL DEQ OFFICE MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE-CONSTRUCTION MEETING, ONE WEEK

PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL

INSPECTION.

3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN

CLEARING AND GRUBBING.

4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT

ALL TIMES

5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS

(INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A

SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY VDEQ

6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES

NECESSARY TO PREVENT EROSION SEDIMENTATION AS DETERMINED BY VDEQ

7. FILLING SHALL BE DONE IN SUCH A WAY SO THAT SITE RUNOFF IS DIRECTED AS SHEET FLOW TOWARDS THE

SILT FENCE .

8. IF SEDIMENT LADEN WATER ACCUMULATES AT SOME LOW POINTS, SUCH WATER SHALL BE PUMPED INTO A

PORTABLE SEDIMENT TANK/ FILTER BOX PRIOR TO RELEASE IT TO WETLAND AREA.

9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH

RUNOFF PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE

EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY.

GENERAL EROSION AND SEDIMENT CONTROL NOTES

STEP 1:

INSTALL SILT FENCE WITH WIRE SUPPORT ALONG

THE FACE OF THE GABION WALL. FILL AND

COMPACT THE AREA UP TO THE HEIGHT OF THE SILT

FENCE.

STEP 2:

REMOVE SILT FENCE AND PLACE FILTER FABRIC ALONG

THE FACE OF GABION WALL. FILL AND COMPACT THE

GAP AS SOON AS THE SILT FENCE IS REMOVED.

STEP 3:

INSTALL SILT FENCE ALONG THE FACE OF THE GABION

WALL AT THE COMPACTED EARTH. FILL AND COMPACT

UP TO THE NEW HEIGHT OF THE SILT FENCE.

REPEAT STEP 1 TO STEP 3 UNTIL FILL REACHES TO THE

ELEVATION OF THE BOTTOM OF PROPOSED LINEAR SAND

FILTER. BUILD THE SAND FILTER AS PER SPECIFICATIONS

AND FILL THE CORNERS TO THE FINISHED GRADE.

COMPACTED

EARTH FILL

SILT FENCE

FACE OF

GABION WALL

FILTER FABRIC

NEW LOCATION

OF SILT FENCE

A TEMPORARY STONE CONSTRUCTION ENTRANCE WILL BE INSTALLED NEAR THE INTERSECTION OF THE GRAVEL

TRAILS AT THE SOUTHWEST CORNER OF THE CONSTRUCTION SITE.

CRITICAL AREAS HAVE BEEN IDENTIFIED IN THE PLAN. THE AREA SURROUNDING THE SITE AND THE TIDAL

WETLAND HAS BEEN DESIGNATED AS CRITICAL. THIS AREA HAS VEGETATION WHICH WOULD EXPERIENCE

SERIOUS DEGRADATION IF SEDIMENT WERE TO LEAVE THE SITE. THEREFORE, CARE SHALL BE TAKEN TO AVOID

LAND DISTURBANCE IN THIS AREA, AND SEDIMENT MUST BE TRAPPED BEFORE IT LEAVES THE SITE.

ANY SAND FILTERS RECEIVING RUNOFF PRIOR TO THE COMPLETION OF CONSTRUCTION SHALL BE RESTORED TO

ORIGINAL CONDITIONS.

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SECTION I GENERAL INFORMATION

SECTION II EROSION AND SEDIMENT CONTROL

STORMWATER POLLUTION PREVENTION PLAN (SWPPP)

GENERAL INFORMATION SHEET

THE SWPPP GENERAL INFORMATION SHEETS ARE TO BE COMPLETED AND INCLUDED IN THE

CONSTRUCTION PLAN SET (OR OTHER SUCH DOCUMENTS) FOR LAND DISTURBANCE (CONSTRUCTION)

ACTIVITIES THAT DISTURB AN AREA EQUAL TO OR GREATER THAN 10,000 SQUARE FEET, OR EQUAL TO

OR GREATER THAN 2,500 SQUARE FEET IN THE AREA DEFINED AS TIDEWATER, VIRGINIA IN THE

VIRGINIA CHESAPEAKE BAY PRESERVATION ACT.

THE CONTRACTOR WILL ENSURE THAT THE INFORMATION SHOWN ON THE SWPPP GENERAL INFORMATION

SHEETS IS UPDATED/REVISED AS NECESSARY IN ORDER TO REFLECT CHANGES THAT MAY OCCUR DURING THE

CONSTRUCTION PHASE OF THE LAND DISTURBING (CONSTRUCTION) ACTIVITY. THE UPDATED/REVISED SHEETS

SHALL BE MAINTAINED WITH THE DESIGNATED RECORD SET OF PLANS (OR OTHER SUCH DOCUMENTS)FOR THE

LAND DISTURBANCE (CONSTRUCTION) ACTIVITY.

DENOTES INFORMATION THAT IS TO BE PROVIDED/COMPLETED BY THE RLD.

DENOTES INFORMATION THAT IS TO BE PROVIDED/COMPLETED BY THE CONTRACTOR.

3. THIS PROPOSED ACTIVITY DISTURBS ONE ACRE OR GREATER AND REQUIRES COVERAGE UNDER THE

VPDES GENERAL PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION ACTIVITIES

(THE VPDES CONSTRUCTION PERMIT) AS ISSUED BY THE DEQ. A COPY OF THE VPDES CONSTRUCTION

PERMIT (VAR10), THE REGISTRATION INFORMATION AND THE PERMIT COVERAGE LETTER RECEIVED FROM

DEQ SHALL BE MAINTAINED WITH OTHER SWPPP DOCUMENTS FOR THIS LAND DISTURBING

(CONSTRUCTION) ACTIVITY.

2. THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY SITE IS LOCATED IN NEWPORT NEWS, VIRGINIA AND

APPROXIMATELY 46.5 ACRES WILL BE DISTURBED BY EXCAVATION, GRADING OR OTHER CONSTRUCTION

ACTIVITIES.

4. THE ESC AND SWM PLANS (WHERE APPLICABLE) FOR THIS LAND DISTURBANCE (CONSTRUCTION)

ACTIVITY HAVE BEEN DEVELOPED IN ACCORDANCE WITH EROSION AND SEDIMENT CONTROL AND

STORMWATER MANAGEMENT STANDARDS AND SPECIFICATIONS AS APPROVED BY VIRGINIA DEQ.

5. THE CONTRACTOR IS DESIGNATED AS THE RLD FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY.

6. THE LOCATION OF ON-SITE SUPPORT FACILITIES THAT WILL BE COVERED UNDER THE VPDES CONSTRUCTION

PERMIT COVERAGE FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY SHALL BE PROVIDED BY THE

CONTRACTOR AND IDENTIFIED ON THE RECORD SET OF PLANS OR IN OTHER APPROPRIATE CONTRACT

DOCUMENTS. SUPPORT FACILITIES SHALL INCLUDE, BUT NOT BE LIMITED TO, BORROW AND DISPOSAL AREAS, CONSTRUCTION AND WASTE MATERIAL STORAGE AREAS, EQUIPMENT AND VEHICLE WASHING, MAINTENANCE, STORAGE AND FUELING AREAS, STORAGE AREAS FOR FERTILIZERS, FUELS OR CHEMICALS, CONCRETE WASH OUT

AREAS, SANITARY WASTE FACILITIES AND ANY OTHER AREAS THAT MAY GENERATE A STORMWATER OR

NON-STORMWATER DISCHARGE DIRECTLY RELATED TO THE CONSTRUCTION SITE.

1. THE INTENDED SEQUENCE AND TIMING OF ACTIVITIES THAT DISTURB SOILS AT THE SITE

(E.G., GRUBBING, EXCAVATION, GRADING, UTILITIES AND INFRASTRUCTURE INSTALLATION, ETC.)

SHALL BE PROVIDED BY THE CONTRACTOR AND SHALL BE INCLUDED WITH THE OTHER SWPPP

DOCUMENTS FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY.

2. DIRECTIONS OF STORMWATER FLOW AND APPROXIMATE SLOPES ANTICIPATED AFTER MAJOR

GRADING ACTIVITIES ARE IDENTIFIED IN THE CONSTRUCTION PLAN SET (OR OTHER SUCH

DOCUMENTS) FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY.

3. AREAS OF SOIL DISTURBANCE AND AREAS OF THE SITE WHICH WILL NOT BE DISTURBED ARE

IDENTIFIED IN THE CONSTRUCTION PLAN SET (OR OTHER SUCH DOCUMENTS) FOR THIS LAND

DISTURBANCE (CONSTRUCTION) ACTIVITY.

4. LOCATIONS OF MAJOR STRUCTURAL AND NONSTRUCTURAL ESC MEASURES INTENDED TO

FILTER, SETTLE OR SIMILARLY REMOVE SEDIMENT ARE IDENTIFIED IN THE CONSTRUCTION PLAN

SET (OR OTHER SUCH DOCUMENTS) FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY.

5. LOCATIONS WHERE VEGETATIVE STABILIZATION PRACTICES ARE EXPECTED TO OCCUR ARE

IDENTIFIED IN THE CONSTRUCTION PLAN SET (OR OTHER SUCH DOCUMENTS) FOR THIS LAND

DISTURBANCE (CONSTRUCTION) ACTIVITY.

6. A DESCRIPTION OF INTERIM AND PERMANENT STABILIZATION PRACTICES FOR THE SITE ARE

IDENTIFIED IN THE APPLICABLE SECTIONS OF THE DOCUMENTS IDENTIFIED IN THE NOTE 1 OF

SECTION III.

7. A RECORD OF THE DATES WHEN MAJOR GRADING ACTIVITIES OCCUR, WHEN CONSTRUCTION

ACTIVITIES TEMPORARILY OR PERMANENTLY CEASE ON A PORTION OF THE SITE, AND WHEN

STABILIZATION MEASURES ARE INITIATED WILL BE PROVIDED BY THE CONTRACTOR AND

MAINTAINED WITH THE RECORD SET OF PLANS OR OTHER SWPPP DOCUMENTS FOR THIS LAND

DISTURBANCE (CONSTRUCTION) ACTIVITY.

8. A DESCRIPTION AND SCHEDULE OF PROCEDURES TO MAINTAIN VEGETATION, EROSION AND

SEDIMENT CONTROL MEASURES AND OTHER PROTECTIVE MEASURES IN GOOD AND EFFECTIVE

OPERATING CONDITIONS ARE IDENTIFIED IN THE DEQ'S EROSION AND SEDIMENT CONTROL

HANDBOOK

9. NUTRIENTS SHALL NOT BE APPLIED DURING RAINFALL EVENTS.

11. THE TEMPORARY EROSION AND SILTATION CONTROL ITEMS SHOWN ON THE ESC PLAN FOR

THIS LAND DISTURBING (CONSTRUCTION) ACTIVITY ARE INTENDED TO PROVIDE A GENERAL PLAN

FOR CONTROLLING EROSION AND SEDIMENT WITHIN THE PROJECT LIMITS. THE ESC PLAN IS BASED

ON FIELD CONDITIONS AT THE TIME OF PLAN DEVELOPMENT AND AN ASSUMED SEQUENCE OF

CONSTRUCTION FOR THE PROJECT. THE CONTRACTOR, IN CONJUNCTION WITH USACE AND/OR THE ESC

INSPECTOR, SHALL ADJUST THE LOCATION, QUANTITY AND TYPE OF EROSION AND SEDIMENT CONTROL

ITEMS REQUIRED BASED ON THE ACTUAL FIELD CONDITIONS ENCOUNTERED AT THE TIME OF CONSTRUCTION

AND THE ACTUAL SCHEDULING AND SEQUENCING OF THE CONSTRUCTION ACTIVITIES. SIGNIFICANT CHANGES

TO THE PROPOSED ESC PLAN (E.G., THOSE THAT REQUIRE AN ENGINEERING ANALYSIS) SHALL BE SUBMITTED

TO USACE FOR REVIEW AND APPROVAL. ANY CHANGES TO THE PROPOSED ESC PLAN MUST BE NOTED ON THE

DESIGNATED RECORD SET OF PLANS WHICH SHALL BE RETAINED ON THE PROJECT SITE AND MADE AVAILABLE

UPON REQUEST DURING NORMAL BUSINESS HOURS.

12. THE AREAS BEYOND THE PROJECT'S CONSTRUCTION AREA ARE TO BE PROTECTED FROM SILTATION.

PERIMETER CONTROLS SUCH AS SILT FENCE, DIVERSION DIKES, TURBIDITY CURTAINS, ETC. SHALL BE

INSTALLED PRIOR TO ANY GRUBBING OPERATIONS OR OTHER EARTH MOVING ACTIVITIES.

13. TEMPORARY EARTHEN STRUCTURES SUCH AS DIKES AND BERMS ARE TO BE STABILIZED IMMEDIATELY

UPON INSTALLATION. STABILIZATION MAY INCLUDE TEMPORARY OR PERMANENT SEEDING, RIPRAP, AGGREGATE, SOD, MULCHING, AND/OR SOIL STABILIZATION BLANKETS AND MATTING IN CONJUNCTION WITH SEEDING.

14. THE CONTRACTOR SHALL PLAN AND IMPLEMENT HIS LAND DISTURBANCE OPERATIONS IN ORDER TO:

A. CONTROL THE VOLUME AND VELOCITY OF STORMWATER RUNOFF WITHIN THE SITE TO MINIMIZE EROSION.

B. CONTROL THE PEAK FLOW RATES, VOLUME AND VELOCITY OF STORMWATER DISCHARGES

TO MINIMIZE EROSION AT OUTLETS AND IN DOWNSTREAM CHANNELS.

C. MINIMIZE THE AMOUNT OF SOIL EXPOSED.

D. MINIMIZE THE DISTURBANCE OF STEEP SLOPES.

E. MINIMIZE SEDIMENT DISCHARGE FROM THE SITE.

F. PROVIDE AND MAINTAIN NATURAL BUFFERS AROUND SURFACE WATERS, DIRECT STORMWATER RUNOFF TO

VEGETATED AREAS AND MAXIMIZE STORMWATER INFILTRATION, UNLESS INFEASIBLE.

G. MINIMIZE SOIL COMPACTION (EXCEPT IN THOSE AREAS WHERE COMPACTION IS REQUIRED BY THE CONTRACT

DOCUMENTS) AND PRESERVE TOPSOIL WHERE FEASIBLE.

15. THE NAME OF THE INDIVIDUAL(S) OR CONTRACTOR(S) RESPONSIBLE FOR THE INSTALLATION AND

MAINTENANCE OF THE EROSION AND SEDIMENT CONTROL MEASURES SHALL BE SUPPLIED BY THE

CONTRACTOR AND MAINTAINED WITH THE OTHER SWPPP DOCUMENTS FOR THIS LAND DISTURBANCE

(CONSTRUCTION) ACTIVITY.

16. SOIL STOCKPILES TEMPORARILY PLACED WITHIN THE PROJECT AREA OR ON RIGHT OF WAY

OR EASEMENT SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES.

7. THE LOCATION OF THE ON-SITE RAIN GAGE THAT WILL BE USED TO DETERMINE THE OCCURRENCE OF A MEASURABLE

STORM EVENT FOR

THE PURPOSES OF ESC AND POLLUTION PREVENTION INSPECTIONS WILL BE PROVIDED BY THE CONTRACTOR AND

IDENTIFIED ON THE RECORD

SET OF PLANS OR IN OTHER APPROPRIATE SWPPP DOCUMENTS FOR THIS LAND DISTURBANCE (CONSTRUCTION)

ACTIVITY.

THE RAIN GAGE SHALL BE OBSERVED DAILY AT (INSERT TIME) TO DETERMINE THE OCCURRENCE OF A MEASURABLE

STORM EVENT (I.E., 0.25 INCHES OF RAINFALL OR GREATER IN A 24 HOUR PERIOD). A LOGBOOK SHALL BE MAINTAINED

TO RECORD OBSERVATION INFORMATION WHICH SHALL INCLUDE:

(1) THE DATE, (2) THE TIME, (3) WHETHER OR NOT RAINFALL IS OCCURRING AT THE TIME OF THE OBSERVATION,

(4) THE AMOUNT OF ACCUMULATED RAINFALL IN THE GAGE, IF ANY, AND (5) WHETHER OR NOT AN INSPECTION IS

REQUIRED BASED ON THE AMOUNT OF ACCUMULATED RAINFALL IN THE GAGE.

IF THERE IS NO RAINFALL OCCURRING AT THE TIME OF THE OBSERVATION, THE OBSERVATION INFORMATION SHALL BE

NOTED IN THE LOG BOOK AND THE RAIN GAGE EMPTIED AND REPLACED. AN INSPECTION IS REQUIRED IF THERE IS 0.25

INCHES OR MORE ACCUMULATION NOTED IN THE RAIN GAGE.

IF THERE IS RAINFALL OCCURRING AT THE TIME OF THE OBSERVATION, THE OBSERVATION INFORMATION IS TO BE

NOTED IN THE LOG BOOK. THE RAIN GAGE IS NOT TO BE EMPTIED BUT LEFT TO ACCUMULATE ADDITIONAL RAINFALL

UNTIL THE CONCLUSION OF THE RAINFALL EVENT. AT THE CONCLUSION OF THE RAINFALL EVENT, AN OBSERVATION OF

THE RAIN GAGE SHALL BE MADE AND THE OBSERVATION INFORMATION SHALL BE NOTED IN THE LOG BOOK AND THE

RAIN GAGE EMPTIED AND REPLACED. AN INSPECTION IS REQUIRED IF THERE IS 0.25 INCHES OR MORE ACCUMULATION

NOTED IN THE RAIN GAGE.

10. ALL ENGINEERING CALCULATIONS SUPPORTING THE DESIGN OF EROSION AND SEDIMENT

CONTROL MEASURES PROPOSED FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY ARE

CONTAINED IN THE PROJECT DRAINAGE FILE LOCATED IN THE OFFICE AND WILL BE MADE AVAILABLE

FOR REVIEW UPON REQUEST DURING NORMAL BUSINESS HOURS.

THE INFORMATION CONTAINED IN THE SWPPP GENERAL INFORMATION SHEETS IS INTENDED TO

COMPLY WITH THE REQUIREMENTS OF THE VPDES GENERAL PERMIT FOR DISCHARGES OF

STORMWATER FROM CONSTRUCTION ACTIVITIES (THE VPDES CONSTRUCTION PERMIT) ISSUED

JULY 1, 2014.

17. A CONSTRUCTION ENTRANCE OR OTHER APPROVED MEASURE SHALL BE INSTALLED AT ALL

LOCATIONS WHERECONSTRUCTION VEHICULAR TRAFFIC ACCESS ROUTES INTERSECT A PAVED

OR A PUBLIC ROAD IN ORDER TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING

ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR A PUBLIC ROAD

SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH WORK DAY BY SHOVELING

OR SWEEPING. REMOVED SEDIMENT SHALL BE DISPOSED OF IN ACCORDANCE WITH DEQ'S STORMWATER

POLLUTION PREVENTION PLAN REQUIREMENTS.

8. THE NAME OF THE CONTRACTOR INDIVIDUAL(S) RESPONSIBLE FOR THE INSPECTION OF THE EROSION AND SEDIMENT

CONTROL AND POLLUTION PREVENTION MEASURES ON THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY IS

IDENTIFIED AND MAINTAINED WITH THE OTHER SWPPP DOCUMENTS FOR THIS LAND DISTURBANCE (CONSTRUCTION)

ACTIVITY (NOTE: INDIVIDUAL(S) SHALL BE CERTIFIED THROUGH THE DEQ ESC INSPECTOR CERTIFICATION PROGRAM AND

SHALL BE KNOWLEDGEABLE IN THE AREA OF POLLUTION PREVENTION AT CONSTRUCTION SITES).

1. ACTIVITY DESCRIPTION - THIS PROJECT CONSISTS OF BUILDING A NEW AVIATION COMPLEX WHICH

INCLUDES CONSTRUCTION OF APRON AREA, HANGAR , ADMINISTRATIVE BUILDING, PARKING LOTS, ACCESS

ALLEY AND ELEVATED TAXIWAY.

Sheet 1 of 3

Revised 10/21/15

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SECTION III SWPPP

STORMWATER POLLUTION PREVENTION PLAN (SWPPP)

GENERAL INFORMATION SHEET

THE SWPPP GENERAL INFORMATION SHEETS ARE TO BE COMPLETED AND INCLUDED IN THE

CONSTRUCTION PLAN SET (OR OTHER SUCH DOCUMENTS) FOR LAND DISTURBANCE (CONSTRUCTION)

ACTIVITIES THAT DISTURB AN AREA EQUAL TO OR GREATER THAN 10,000 SQUARE FEET, OR EQUAL TO

OR GREATER THAN 2,500 SQUARE FEET IN THE AREA DEFINED AS TIDEWATER, VIRGINIA IN THE

VIRGINIA CHESAPEAKE BAY PRESERVATION ACT.

THE CONTRACTOR ENSURE THAT THE INFORMATION SHOWN ON THE SWPPP GENERAL INFORMATION

SHEETS IS UPDATED/REVISED AS NECESSARY IN ORDER TO REFLECT CHANGES THAT MAY OCCUR DURING THE

CONSTRUCTION PHASE OF THE LAND DISTURBING (CONSTRUCTION) ACTIVITY. THE UPDATED/REVISED SHEETS

SHALL BE MAINTAINED WITH THE DESIGNATED RECORD SET OF PLANS (OR OTHER SUCH DOCUMENTS)FOR THE

LAND DISTURBANCE (CONSTRUCTION) ACTIVITY.

DENOTES INFORMATION THAT IS TO BE PROVIDED/COMPLETED BY THE RLD (CONTRACTOR).

DENOTES INFORMATION THAT IS TO BE PROVIDED/COMPLETED BY THE CONTRACTOR.

1. ALL DOCUMENTS RELATED TO THE SWPPP FOR THIS LAND DISTURBANCE (CONSTRUCTION)

ACTIVITY SHALL BE MAINTAINED AT THE ACTIVITY SITE AND SHALL BE READILY AVAILABLE FOR

REVIEW UPON REQUEST DURING NORMAL BUSINESS HOURS. SUCH DOCUMENTS INCLUDE, BUT

ARE NOT LIMITED TO, THE CONSTRUCTION PLANS (OR OTHER SUCH DOCUMENTS), THE ESC PLAN, THE POLLUTION PREVENTION PLAN, THE POST CONSTRUCTION SWM PLAN (IF APPLICABLE), THE

STANDARDS AND SPECIFICATIONS, SUPPLEMENTAL SPECIFICATIONS, SPECIAL

PROVISIONS AND SPECIAL PROVISION COPIED NOTES. DOCUMENTS RELATED TO STORMWATER

POLLUTION PREVENTION WHICH ARE NOT A PART OF THOSE DOCUMENTS REFERENCED ABOVE,

SUCH AS A COPIES OF THE VPDES CONSTRUCTION PERMIT COVERAGE LETTER (WHEN

APPLICABLE) AND THE VPDES GENERAL PERMIT FOR DISCHARGES OF STORMWATER FROM

CONSTRUCTION ACTIVITIES (WHEN APPLICABLE) AND THOSE REQUIRED TO BE DEVELOPED BY

THE CONTRACTOR FOR POLLUTION PREVENTION ASSOCIATED WITH ANY ON-SITE SUPPORT

FACILITIES BEING INCLUDED IN THE VPDES CONSTRUCTION PERMIT COVERAGE FOR THIS LAND

DISTURBANCE (CONSTRUCTION) ACTIVITY ARE TO BE MAINTAINED AT THE ACTIVITY SITE WITH THE

OTHER SWPPP DOCUMENTS FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY. WHERE

NO FACILITIES ARE AVAILABLE AT THE ACTIVITY SITE TO MAINTAIN THE SWPPP DOCUMENTS, THEY ARE TO BE KEPT BY OR WITH THE DESIGNATED RLD AT A LOCATION CONVENIENT TO THE

ACTIVITY SITE WHERE THEY WOULD BE MADE AVAILABLE FOR REVIEW UPON REQUEST DURING

NORMAL BUSINESS HOURS.

2. THE SWPPP AND ANY SUBSEQUENT AMENDMENTS, MODIFICATIONS AND UPDATES SHALL BE

IMPLEMENTED FROM COMMENCEMENT OF LAND DISTURBANCE UNTIL TERMINATION OF VPDES

CONSTRUCTION PERMIT COVERAGE OR COMPLETION OF LAND DISTURBANCE (CONSTRUCTION)

ACTIVITIES WHERE NO VPDES CONSTRUCTION PERMIT COVERAGE IS REQUIRED.

7. THE SWPPP SHALL BE MADE AVAILABLE FOR REVIEW BY THE PUBLIC UPON REQUEST. SUCH

REVIEWS SHALL BE AT A TIME AND PUBLICLY ACCESSIBLE LOCATION AND SHALL BE SCHEDULED

DURING NORMAL BUSINESS HOURS AND NO LESS THAN ONCE PER MONTH.

1. THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY UTILIZES THE PART IIB TECHNICAL CRITERIA (I.E., RUNOFF

REDUCTION METHOD, ENERGY BALANCE EQUATION, ETC.) IN SECTION 9VAC25-870-62 ET SEQ. OF THE VSMP

REGULATIONS.

3. A DESCRIPTION OF ALL POST-CONSTRUCTION STORMWATER MANAGEMENT MEASURES THAT WILL

BE INSTALLED DURING THE CONSTRUCTION PROCESS TO CONTROL POLLUTANTS IN STORMWATER

DISCHARGES AFTER CONSTRUCTION OPERATIONS HAVE BEEN COMPLETED IS INCLUDED IN THE

CONSTRUCTION PLAN SET (OR OTHER SUCH DOCUMENTS) FOR THIS LAND DISTURBANCE

(CONSTRUCTION) ACTIVITY.

5. ALL ENGINEERING CALCULATIONS SUPPORTING THE DESIGN OF THE POST-CONSTRUCTION

STORMWATER MANAGEMENT MEASURES FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY, INCLUDING AN EXPLANATION OF THE TECHNICAL BASIS USED TO SELECT THE PRACTICES, ARE

CONTAINED IN THE PROJECT DRAINAGE FILE LOCATED IN THE FIELD OFFICE AND WILL BE MADE

AVAILABLE FOR REVIEW UPON REQUEST DURING NORMAL WORKING BUSINESS HOURS.

THE INFORMATION CONTAINED IN THE SWPPP GENERAL INFORMATION SHEETS IS INTENDED TO

COMPLY WITH THE REQUIREMENTS OF THE VPDES GENERAL PERMIT FOR DISCHARGES OF

STORMWATER FROM CONSTRUCTION ACTIVITIES (THE VPDES CONSTRUCTION PERMIT) ISSUED

JULY 1, 2014.

SECTION V - POLLUTION PREVENTION PLAN

1. THE FOLLOWING NON-STORMWATER DISCHARGES FROM THIS LAND DISTURBING (CONSTRUCTION)

ACTIVITYAND ANY ON-SITE SUPPORT FACILITIES ARE PROHIBITED:

A. WASTEWATER FROM CONCRETE WASHOUTS.

B. WASTEWATER FROM THE WASHOUT AND CLEANOUT OF STUCCO, PAINT, FORM RELEASE

OILS, CURING COMPOUNDS AND OTHER CONSTRUCTION MATERIALS.

C. FUELS, OILS OR OTHER POLLUTANTS USED IN VEHICLE AND EQUIPMENT OPERATION AND

MAINTENANCE.

D. OILS, TOXIC SUBSTANCES OR HAZARDOUS SUBSTANCES FROM SPILLS OR OTHER RELEASES.

E. SOAPS, SOLVENTS OR DETERGENTS USED IN EQUIPMENT AND VEHICLE WASHING.

F. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN

TRACE AMOUNTS

SECTION IV POST CONSTRUCTION STORMWATER MANAGEMENT

2. THE FOLLOWING NON-STORMWATER DISCHARGES FROM THIS LAND DISTURBING (CONSTRUCTION)

ACTIVITY AND ANY ON-SITE SUPPORT FACILITIES ARE ALLOWED WHEN DISCHARGED IN

COMPLIANCE WITH THE VPDES CONSTRUCTION PERMIT:

A. DISCHARGES FROM FIRE FIGHTING ACTIVITIES.

B. FIRE HYDRANT FLUSHINGS.

C. WATERS USED TO WASH VEHICLES OR EQUIPMENT WHERE SOAPS, SOLVENTS OR

DETERGENTS HAVE NOT BEEN USED AND THE WASH WATER HAS BEEN FILTERED, SETTLED

OR SIMILARLY TREATED PRIOR TO DISCHARGE.

D. WATER USED TO CONTROL DUST THAT HAS BEEN FILTERED, SETTLED OR SIMILARLY

TREATED PRIOR TO DISCHARGE.

E. POTABLE WATER SOURCES INCLUDING UNCONTAMINATED WATERLINE FLUSHINGS.

F. ROUTINE EXTERNAL BUILDING WASH DOWN WHERE SOAPS, SOLVENTS OR DETERGENTS

HAVE NOT BEEN USED AND THE WASH WATER HAS BEEN FILTERED, SETTLED OR

SIMILARLY TREATED PRIOR TO DISCHARGE.

G. PAVEMENT WASH WATERS WHERE SPILLS OR LEAKS OF TOXIC OR HAZARDOUS

MATERIALS HAVE NOT OCCURRED (OR WHERE ALL SPILLED OR LEAKED MATERIAL HAS

BEEN REMOVED PRIOR TO WASHING), WHERE SOAPS, SOLVENTS OR DETERGENTS HAVE

NOT BEEN USED AND WHERE THE WASH WATER HAS BEEN FILTERED, SETTLED OR

SIMILARLY TREATED PRIOR TO DISCHARGE.

H. UNCONTAMINATED AIR CONDITIONING OR COMPRESSOR CONDENSATE.

I. UNCONTAMINATED GROUND WATER OR SPRING WATER.

J. FOUNDATION OR FOOTING DRAINS WHERE FLOWS ARE NOT CONTAMINATED WITH

PROCESS MATERIALS SUCH AS SOLVENTS.

K. UNCONTAMINATED EXCAVATION DEWATERING, INCLUDING DEWATERING TRENCHES AND

EXCAVATIONS THAT HAVE BEEN FILTERED, SETTLED OR SIMILARLY TREATED PRIOR TO DISCHARGE.

L. LANDSCAPE IRRIGATION.

2. THE PERMANENT ONSITE SWM FACILITIES OR OFFSITE STRATEGIES PROPOSED TO MEET THE

WATER QUALITY/QUANTITY REQUIREMENTS FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY

ARE LISTED IN SECTION VI.

ACRONYMS

BMP - BEST MANAGEMENT PRACTICE

DEQ - DEPARTMENT OF ENVIRONMENTAL QUALITY

EPA - U.S. ENVIRONMENTAL PROTECTION AGENCY

ESC - EROSION AND SEDIMENT CONTROL

RLD - RESPONSIBLE LAND DISTURBER

SWM - STORMWATER MANAGEMENT

SWPPP - STORMWATER POLLUTION PREVENTION PLAN

TMDL - TOTAL MAXIMUM DAILY LOAD

VPDES - VIRGINIA POLLUTANT DISCHARGE ELIMINATION SYSTEM

VSMP - VIRGINIA STORMWATER MANAGEMENT PROGRAM

VESCP - VIRGINIA EROSION AND SEDIMENT CONTROL PROGRAM

3. FOR ALL ON-SITE SUPPORT FACILITIES THAT WILL BE INCLUDED IN THE VPDES CONSTRUCTION

PERMIT COVERAGE FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY, THE CONTRACTOR

SHALL DEVELOP A SWPPP IN ACCORDANCE WITH DEQ'S STORMWATER POLLUTION PREVENTION PLAN.

THE SWPPP FOR THE ON-SITE SUPPORT FACILITIES SHALL BE MAINTAINED WITH AND BECOME A

COMPONENT OF THE SWPPP FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY. SUPPORT

FACILITIES SHALL INCLUDE, BUT NOT BE LIMITED TO, BORROW AND DISPOSAL AREAS, CONSTRUCTION AND

WASTE MATERIAL STORAGE AREAS, EQUIPMENT AND VEHICLE WASHING, MAINTENANCE,

STORAGE AND FUELING AREAS, STORAGEAREAS FOR FERTILIZERS, FUELS OR CHEMICALS, CONCRETE

WASH OUT AREAS, SANITARY WASTE FACILITIES AND ANY OTHER AREAS THAT MAY GENERATE A

STORMWATER OR NON-STORMWATER DISCHARGE DIRECTLY RELATED TO THE CONSTRUCTION SITE.

3. THE CONTRACTOR SHALL DEVELOP A POLLUTION PREVENTION PLAN TO ADDRESS ANY OF HIS ON-

SITE OPERATIONS THAT HAVE A POTENTIAL TO GENERATE A POLLUTANT THAT MAY REASONABLY BE

EXPECTED TO AFFECT THE QUALITY OF STORMWATER DISCHARGES FROM THIS LAND DISTURBANCE

(CONSTRUCTION) ACTIVITY. THE POLLUTION PREVENTION PLAN SHALL BE DEVELOPED IN

ACCORDANCE WITH, BUT NOT LIMITED TO, SECTIONS 106.08, 107.02 AND 107.16 OF THE VDOT

ROAD AND BRIDGE SPECIFICATIONS AND SHALL INCLUDE A NARRATIVE WITH APPROPRIATE PLAN

DETAIL AND SHALL BE PROVIDED ON STANDARD 8.5 X 11 INCH PAPER OR LARGER AND SHALL:

A. IDENTIFY THE POTENTIAL POLLUTANT-GENERATING ACTIVITIES AND THE POLLUTANT THAT

IS EXPECTED TO BE EXPOSED TO STORMWATER.

B. DESCRIBE THE LOCATION WHERE THE POTENTIAL POLLUTANT-GENERATING ACTIVITIES

WILL OCCUR, OR IF IDENTIFIED ON THE RECORD SET OF PLANS, REFERENCE THE RECORD

SET OF PLANS.

C. IDENTIFY ALL NON-STORMWATER DISCHARGES, AS DESCRIBED IN NOTE TWO OF THIS

SECTION, THAT ARE OR WILL BE COMMINGLED WITH STORMWATER DISCHARGES FROM

THE CONSTRUCTION ACTIVITY, INCLUDING ANY ON-SITE SUPPORT ACTIVITIES.

D. IDENTIFY THE PERSON(S) OR CONTRACTOR(S) RESPONSIBLE FOR IMPLEMENTING AND

MAINTAINING THE POLLUTION PREVENTION PRACTICE OR PRACTICES FOR EACH

POLLUTANT-GENERATING ACTIVITY.

E. DESCRIBE THE POLLUTION PREVENTION PRACTICES AND PROCEDURES THAT WILL BE IMPLEMENTED TO:

1) PREVENT AND RESPOND TO LEAKS, SPILLS, AND OTHER RELEASES, INCLUDING

PROCEDURES FOR EXPEDITIOUSLY STOPPING, CONTAINING, AND CLEANING UP

SPILLS, LEAKS, AND OTHER RELEASES, AND PROCEDURES FOR REPORTING LEAKS,

SPILLS, AND OTHER RELEASES IN ACCORDANCE WITH SECTION 107.16 OF THE

VDOT ROAD AND BRIDGE SPECIFICATIONS AND THE REQUIREMENTS WITHIN

THE VPDES CONSTRUCTION PERMIT.

2) PREVENT THE DISCHARGE OF SPILLED AND LEAKED FUELS AND CHEMICALS FROM

VEHICLE FUELING AND MAINTENANCE ACTIVITIES.

3) PREVENT THE DISCHARGE OF SOAPS, SOLVENTS, DETERGENTS, AND WASH WATER

FROM CONSTRUCTION MATERIALS, INCLUDING PROCEDURES FOR THE CLEAN-UP OF

STUCCO, PAINT, FORM RELEASE OILS, AND CURING COMPOUNDS.

4) MINIMIZE THE DISCHARGE OF POLLUTANTS FROM VEHICLE AND EQUIPMENT

WASHING, WHEEL WASH WATER, AND OTHER TYPES OF WASHING.

5) DIRECT CONCRETE WASH WATER INTO A LEAK-PROOF CONTAINER OR LEAK-PROOF

SETTLING BASIN. THE CONTAINER OR BASIN SHALL BE DESIGNED SO THAT NO

OVERFLOWS CAN OCCUR DUE TO INADEQUATE SIZING OR PRECIPITATION.

HARDENED CONCRETE WASTES SHALL BE REMOVED AND DISPOSED OF IN A

MANNER CONSISTENT WITH THE HANDLING OF OTHER CONSTRUCTION WASTES.

LIQUID CONCRETE WASTES SHALL BE REMOVED AND DISPOSED OF IN A MANNER

CONSISTENT WITH THE HANDLING OF OTHER CONSTRUCTION WASH WATERS AND

SHALL NOT BE DISCHARGED TO SURFACE WATERS.

6) MINIMIZE THE DISCHARGE OF POLLUTANTS FROM STORAGE, HANDLING, AND

DISPOSAL OF CONSTRUCTION PRODUCTS, MATERIALS, AND WASTES INCLUDING

BUILDING PRODUCTS (SUCH AS ASPHALT SEALANTS, COPPER FLASHING, ROOFING

MATERIALS, ADHESIVES, AND CONCRETE ADMIXTURES), PESTICIDES, HERBICIDES,

INSECTICIDES, FERTILIZERS, LANDSCAPE MATERIALS, CONSTRUCTION AND DOMESTIC

WASTES (SUCH AS PACKAGING MATERIALS), SCRAP CONSTRUCTION MATERIALS,

MASONRY PRODUCTS, TIMBER, PIPE AND ELECTRICAL CUTTINGS, PLASTICS,

STYROFOAM, CONCRETE, AND OTHER TRASH OR BUILDING MATERIALS.

7) PREVENT THE DISCHARGE OF FUELS, OILS, AND OTHER PETROLEUM PRODUCTS,

HAZARDOUS OR TOXIC WASTES, AND SANITARY WASTES.

8) ADDRESS ANY OTHER DISCHARGE FROM ANY POTENTIAL POLLUTANT-GENERATING

ACTIVITY NOT LISTED HEREIN.

9) DESCRIBE AND IMPLEMENT PROCEDURES FOR PROVIDING POLLUTION PREVENTION

AWARENESS (INCLUDING BUT NOT LIMITED TO PREVENTION PRACTICES, DISPOSAL

PRACTICES AND APPROPRIATE DISPOSAL LOCATIONS) FOR ALL APPLICABLE WASTES

(INCLUDING ANY WASH WATER), TO APPROPRIATE PERSONNEL.

4. BY COMPLETING AND SUBMITTING THE SWPPP CERTIFICATION FORM, THE CONTRACTOR,

OR HIS AUTHORIZED REPRESENTATIVE, CERTIFIES THAT ALL DOCUMENTS IDENTIFIED HEREIN TO BE

SUPPLIED BY THE CONTRACTOR WILL BE REVIEWED, APPROVED AND INCLUDED WITH THE OTHER

SWPPP DOCUMENTS FOR THIS LAND DISTURBANCE (CONSTRUCTION) ACTIVITY PRIOR TO START

OF WORK IN THOSE AREAS IDENTIFIED BY SUCH INFORMATION.

5. FOR THOSE LAND DISTURBING (CONSTRUCTION) ACTIVITIES REQUIRING COVERAGE UNDER THE

VPDES CONSTRUCTION PERMIT, THE SWPPP SHALL BE MADE AVAILABLE FOR REVIEW UPON

THE REQUEST OF THE DEQ, THE EPA, THE VSMP AUTHORITY, THE VESCP AUTHORITY,

LOCAL GOVERNMENT OFFICIALS OR THE OPERATOR OF A MUNICIPAL SEPARATE STORM SEWER

SYSTEM (MS4) RECEIVING DISCHARGE FROM THE CONSTRUCTION SITE.

6. FOR THOSE LAND DISTURBING (CONSTRUCTION) ACTIVITIES REQUIRING COVERAGE UNDER THE

VPDES CONSTRUCTION PERMIT, THE CONTRACTOR SHALL POST, OR HAVE POSTED, A COPY

OF THE GENERAL PERMIT COVERAGE LETTER, NOTING THE NAME AND CONTACT INFORMATION

FOR THE ANC PERSON RESPONSIBLE FOR THE LAND DISTURBING (CONSTRUCTION) ACTIVITY AND

ITS SWPPP, OUTSIDE THE PROJECT'S CONSTRUCTION OFFICE ALONG WITH OTHER FEDERAL AND

STATE MANDATED INFORMATION. WHERE THERE IS NO CONSTRUCTION OFFICE (E.G., A

MAINTENANCE ACTIVITY), THE PERMIT COVERAGE LETTER IS TO BE MAINTAINED WITH THE OTHER

SWPPP DOCUMENTS FOR THE LAND DISTURBING (CONSTRUCTION) ACTIVITY.

Sheet 2 of 3

Revised 10/21/15

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PROPERTY OF UNITED STATES GOVERNMENT, FOR OFFICIAL USE ONLY (FOUO). COPYING, DISSEMINATION, AND DISTRIBUTION TO UNAUTHORIZED INDIVIDUALS PROHIBITED.

CG508

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Sheet 3 of 3

State

Hydrologic

Unit Code

STORMWATER POLLUTION PREVENTION PLAN (SWPPP)

GENERAL INFORMATION SHEET

INSTALLED BMP INFORMATION

Table A

County or

City

(7)

Latitude/Longitude

(1)

LAT LONG

ALTERNATIVE BMP INFORMATION

Table B

Receiving Stream Name

(2)

BMP Type Acres Treated Per BMP

(3)

Impervious Pervious

State

Hydrologic

Unit Code

LAT

LONG

BMP Type

Impervious Pervious

(See Table 2 )

County or

City

(5)

(5) (7)

Latitude/Longitude

(1) (5)

Project Acres Treated

Per BMP (3)

Name of

Nutrient

Bank or

Broker

(6)

Nutrient Credits

(lbs./acre/year)

Acquired

(3) (6)

THE SWPPP GENERAL INFORMATION SHEETS ARE TO BE COMPLETED AND INCLUDED IN THE

CONSTRUCTION PLAN SET (OR OTHER SUCH DOCUMENTS) FOR LAND DISTURBANCE (CONSTRUCTION)

ACTIVITIES THAT DISTURB AN AREA EQUAL TO OR GREATER THAN 10,000 SQUARE FEET, OR EQUAL TO

OR GREATER THAN 2,500 SQUARE FEET IN THE AREA DEFINED AS TIDEWATER, VIRGINIA IN THE

VIRGINIA CHESAPEAKE BAY PRESERVATION ACT.

THE CONTRACTOR WILL ENSURE THAT THE INFORMATION SHOWN ON THE SWPPP GENERAL INFORMATION

SHEETS IS UPDATED/REVISED AS NECESSARY IN ORDER TO REFLECT CHANGES THAT MAY OCCUR DURING THE

CONSTRUCTION PHASE OF THE LAND DISTURBING (CONSTRUCTION) ACTIVITY. THE UPDATED/REVISED SHEETS

SHALL BE MAINTAINED WITH THE DESIGNATED RECORD SET OF PLANS (OR OTHER SUCH DOCUMENTS)FOR THE

LAND DISTURBANCE (CONSTRUCTION) ACTIVITY.

DENOTES INFORMATION THAT IS TO BE PROVIDED/COMPLETED BY THE RLD.

DENOTES INFORMATION THAT IS TO BE PROVIDED/COMPLETED BY THE CONTRACTOR.

THE INFORMATION CONTAINED IN THE SWPPP GENERAL INFORMATION SHEETS IS INTENDED TO

COMPLY WITH THE REQUIREMENTS OF THE VPDES GENERAL PERMIT FOR DISCHARGES OF

STORMWATER FROM CONSTRUCTION ACTIVITIES (THE VPDES CONSTRUCTION PERMIT) ISSUED

JULY 1, 2014.

Denotes information that is to be completed by the RLD.

( ) See note referenced by number in parentheses.

(See Table 1 and 3 )

TOTAL

TOTAL

( ) See note referenced by number in parentheses.

TABLE 1: PERMANENT BMP TYPES (BASED ON 2013 VA. SWM HANDBOOK)

BIO-RETENTION BASIN

BIO-RETENTION FILTER

CONSTRUCTED STORMWATER WETLANDS

EXTENDED DETENTION BASIN

EXTENDED DETENTION BASIN ENHANCED

GRASSED SWALE

INFILTRATION BASIN

INFILTRATION TRENCH

MANUFACTURED TREATMENT DEVICE

(MTD) (8)

RETENTION BASIN I

RETENTION BASIN II

RETENTION BASIN III

SAND FILTER

VEGETATED FILTER STRIP

OTHER APPROVED TYPES (LIST TYPE)

TABLE 2: ALTERNATIVE BMP TYPES

COMPREHENSIVE SWM PLAN (REGIONAL) FACILITY

POLLUTANT LOADING PRO RATA SHARE PROGRAM

PURCHASE OF NUTRIENTS CREDITS

OTHER APPROVED OPTIONS (LIST TYPE) (4)

TABLE 3: PERMANENT BMP TYPES (BASED ON BMP CLEARING HOUSE)

SHEET FLOW TO VEGETATED FILTER STRIP

GRASS CHANNEL

SOIL COMPOST AMENDMENT

PERMEABLE PAVEMENT

INFILTRATION PRACTICE

BIORETENTION

DRY SWALE

WET SWALE

FILTERING PRACTICE

CONSTRUCTED WETLANDS

BIORENTION CONSERVATION

EXTENDED DETENTION POND

WET POND

MANUFACTURED TREATMENT DEVICE (MTD)(8)

OTHER APPROVED TYPES (LIST TYPE) (4)

SECTION VI - PERMANENT BMP INFORMATION

ACRONYMS

BMP - BEST MANAGEMENT PRACTICE

DEQ - DEPARTMENT OF ENVIRONMENTAL QUALITY

EPA - U.S. ENVIRONMENTAL PROTECTION AGENCY

ESC - EROSION AND SEDIMENT CONTROL

RLD - RESPONSIBLE LAND DISTURBER

SWM - STORMWATER MANAGEMENT

SWPPP - STORMWATER POLLUTION PREVENTION PLAN

TMDL - TOTAL MAXIMUM DAILY LOAD

VPDES - VIRGINIA POLLUTANT DISCHARGE ELIMINATION SYSTEM

VSMP - VIRGINIA STORMWATER MANAGEMENT PROGRAM

VESCP - VIRGINIA EROSION AND SEDIMENT CONTROL PROGRAM

ANY CHANGES TO THE PROPOSED SWM PLAN OR BMPS NECESSITATED DURING THE CONSTRUCTION PHASE

OF THE PROJECT THAT AFFECTS THE PROPOSED CONSTRUCTION DETAILS OR POTENTIALLY AFFECTS THE

INFORMATION SHOWN IN THE BMP TABLES A AND/OR B SHALL BE COORDINATED BY THE RLD (CONTRACTOR) WITH

USACE. THE CONSTRUCTION PLANS AND THE BMP TABLES A AND/OR B ARE TO BE FORMALLY REVISED TO REFLECT

ANY AUTHORIZED/APPROVED CHANGES TO THE PROPOSED SWM PLAN AND/OR THE PROPOSED BMP CONSTRUCTION

DETAILS. PRIOR TO SUBMITTING FOR TERMINATION OF COVERAGE UNDER THE VPDES GENERAL PERMIT FOR THE

DISCHARGE OF STORMWATER FROM CONSTRUCTION ACTIVITIES, THE RLD SHALL HAVE THE DISTRICT MAINTENANCE

INFRASTRUCTURE MANAGER REVIEW THE BMPS INSTALLED WITH THE PROJECT (BMP TABLE A) FOR ACCEPTANCE OF

MAINTENANCE RESPONSIBILITY AND TO OBTAIN A MAINTENANCE ID NUMBER FOR EACH BMP LISTED IN BMP TABLE A.

THE RLD SHALL USE THE INFORMATION IN BMP TABLES A AND B ALONG WITH THE ASSIGNED MAINTENANCE ID NUMBER

AND THE DATE THAT THE BMP BECAME FUNCTIONAL AS A PERMANENT CONTROL MEASURE (FOR BMPS IN TABLE A

ONLY) WHEN CERTIFYING THE CONSTRUCTION OF THE BMPS AND SUBMITTING FOR TERMINATION OF COVERAGE

UNDER THE VPDES GENERAL PERMIT FOR THE DISCHARGE OF STORMWATER FROM CONSTRUCTION ACTIVITIES.

Name of Impaired

Water (9)

Revised 10/21/15

NOTES:

(1) IN DECIMAL DEGREES TO THE NEAREST ONE TEN-THOUSANDTH OF A DEGREE.

(2) FOR STREAMS WITH NO NAMES, LIST "(UNNAMED TRIBUTARY TO (CLOSEST STREAM NAME)".

(3) SHOW ACRES TREATED TO THE NEAREST ONE TENTH OR POUNDS PURCHASED TO THE NEAREST ONE

HUNDREDTH.

(4) INCLUDE AGREEMENTS WITH OFF-SITE BMP OWNERS.

(5) INFORMATION PERTAINS TO THE ALTERNATIVE BMP OPTION LOCATION, WHERE APPLICABLE.

EXCEPTION - NOT REQUIRED FOR NUTRIENT CREDIT PURCHASE OPTION.

(6) APPLIES TO THE PURCHASE OF NUTRIENT CREDITS ONLY.

(7) VIRGINIA 6TH ORDER HUC (VAHU6) EXAMPLE - YO30.

(8) FINAL APPROVED SHOP DRAWINGS OF MANUFACTURED TREATMENT DEVICES (MTDS) ARE TO BE INCLUDED

WITH THE BMP INFORMATION .

SAND FILTER\DETENTION BASIN

LINEAR SAND FILTER

VEGETATED FILTER STRIP

SAND FILTER\DETENTION BASIN NEWPORT NEWS

NEWPORT NEWS

NEWPORT NEWS

JAMES RIVER-MORRISONS CREEK

JL37

JL37

JL37

JAMES RIVER-MORRISONS CREEK

JAMES RIVER-MORRISONS CREEK

5.80 0.00 5.80

8.81 0.85 9.66

3.43 0.12 3.55

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