FINAL_CISB2_DRAWINGS_7-25-19.pdf

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Craney Isalnd Dredged Material Management Area Spillbox #2
Solicitation number
W9123619B0027
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Spillbox_2_Abstract_1.pdf PDF
Spillbox2_Abstract__2.pdf PDF
A.07.24_Solicitation_Spillbox2_Amendment_3.pdf PDF
Spillboxxx__2_-_Amendment__2_--_3_revised_or_new_drawings__8-13-19.pdf PDF
A.07.24_Solicitation_Spillbox2_Amendment_2.pdf PDF
A.01.25_Craney_Island_Spillbox_2_Site_Visit_Sign_In_Roster.pdf PDF
A.01.24_Spillbox2_Solicitation_Amendment_1.pdf PDF
A.04.21_Solicitation_Spillbox___2.pdf PDF
A.01.13_FINAL_CISB2_SPECIFICATIONS_5-30-19.pdf PDF
A.01.13_FINAL_CISB2_DRAWINGS_5-30-19.pdf PDF

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CRANEY ISLAND DREDGE MATERIAL MANAGEMENT AREA

REPLACE SPILLBOX #2

PORTSMOUTH, VIRGINIA

US Army Corps of Engineers

Norfolk District

Sheet List Table

Sheet

Number

Sheet Title

S-101 PLAN & ELEVATIONS

S-501 SECTIONS & DETAILS

S-502 GRATING PLAN & MISC DETAILS

SD101

EXISTING SPILLBOX (REFERENCE ONLY)

SD501

EXISTING SPILLBOX (REFERENCE ONLY)

Sheet index

COVER SHEET

LOCATION MAP

GENERAL NOTES

DEMOLITION OF EXISTING SPILLBOX

EXCAVATION & BACKFILL OF EXST PIPELINE FOR SPILLBOX

DEMOLITION PLAN - SPILLBOX STRUCTURE

DEMOLITION PLAN - SPILLBOX STRUCTURE (CONT'D)

INSTALLATION OF NEW SPILLBOX

SPILLBOX BOX NO. 2 PLAN & PROFILE

PERIMETER ROAD OVER NEW OUTFALL PIPES

PERIMETER ROAD DETAILS & EC NOTES

OUTFALL PIPE PROFILES

DISCHARGE PIPE EXCAVATION AND FILL DETAILS

SPILLBOX FOUNDATION & ACCESS ROAD DETAIL

MARINE MATTRESS DETAIL

MARINE MATTRESS DETAIL (CONT'D)

SD100

EXISTING SPILLBOX (REFERENCE ONLY)

5A

DETAILS FOR EXCAVATION & BACKFILL OF EXISTING SB#2 PIPELINE

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NORFOLK, VIRGINIA

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CORPS OF ENGINEERS

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NORFOLK DISTRICT FILE NO.:

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DESCRIPTION

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CRA.2018-05-22.PS

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JOSEPH MOORE

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22 APR 2019

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AutoCAD SHX Text SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION AND APPROVAL OF ALL DRAWINGS IN THIS SET AS INDICATED ON INDEX TO DRAWINGS.

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NORFOLK, VIRGINIA

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DEPARTMENT OF THE ARMY

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NORFOLK DISTRICT, CORPS OF ENGINEERS

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CHIEF, WATER RESOURCES DIVISION

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CHIEF, DESIGN SECTION

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CHIEF, OPERATIONS BRANCH

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CHIEF, NAVIGATION SUPPORT AND SURVEY SECTION

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VIRGINIA

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CRANEY ISLAND

USACE OFFICE

4599 RIVER SHORE ROAD

PORTSMOUTH, VA 23703

757 484-1021

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WESTERN FREEWAY (EBL) HWY 164

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RIVER SHORE LANE

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TWIN PINES ROAD

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HEDGEROW LANE

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TO MIDTOWN TUNNEL

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TO I-664

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NORFOLK HARBOR CHANNEL

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%%ULOCATION MAP

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US HWY 13

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CHESAPEAKE BAY

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ATLANTIC OCEAN

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(HWY 13)

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US HWY

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SCALE IN MILES

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VIRGINIA

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NORTH CAROLINA

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NORFOLK DISTRICT FILE NO.:

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DESCRIPTION

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CRA.2018-05-22.PS

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JOSEPH MOORE

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22 APR 2019

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ABBREVIATIONS

GENERAL NOTES:

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%%ULEGEND

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EXISTING

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MAJOR CONTOUR

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DRAINAGE PIPES

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SHORELINE

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PERIMETER ROAD

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LIMITS OF CONSTRUCTION

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FEDERAL NAVIGATION CHANNEL

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BENCHMARK

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PROFILE SURFACE

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NORFOLK DISTRICT FILE NO.:

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DESCRIPTION

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CRA.2018-05-22.PS

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JOSEPH MOORE

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BENCHMARKS

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ELEVATIONS

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BENCHMARKS

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AutoCAD SHX Text Elevations are relative to NOS MLLW, 1983-2001 NTDE

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CE "AR-2 RESET, 1975"

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2.58' RANGE

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DATUM DIAGRAM CRANEY ISLAND 1983-2001 NTDE (SCALE 1"-1')

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NOS MLLW, 1983-2001 TIDAL EPOCH

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PREVIOUS USED NOS MLLW, 1960-1978 TIDAL EPOCH

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NOS MLW, 1983-2001 TIDAL EPOCH

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NOS MHW, 1983-2001 TIDAL EPOCH

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NAVD 88

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- NOTES -

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CE "NICO, 1993"

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"REHANDLING, 2015" OPUS

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1. THE COORDINATES ARE IN FEET AND REFERRED TO THE VIRGINIA GRID (SOUTH ZONE). THE COORDINATES ARE IN FEET AND REFERRED TO THE VIRGINIA GRID (SOUTH ZONE). 2. PROJECT BENCH MARK IS BRASS DISK SET FLUSH WITH GROUND ON THE SOUTH SIDE OF THE ASPHALT PROJECT BENCH MARK IS BRASS DISK SET FLUSH WITH GROUND ON THE SOUTH SIDE OF THE ASPHALT ROAD AT SOUTHWEST CORNER OF CRANEY ISLAND AND IS DESIGNATED AS C.E. "AR-2", ELEV. = 17.01 FEET ABOVE NATIONAL OCEAN SERVICE, MEAN LOWER LOW WATER, (NOS MLLW) 1983-2001 NTDE. 3. EXCESS EXCAVATED MATERIAL SHALL BE DISPOSED OF WITHIN THE CRANEY ISLAND DISPOSAL AREA AT A EXCESS EXCAVATED MATERIAL SHALL BE DISPOSED OF WITHIN THE CRANEY ISLAND DISPOSAL AREA AT A LOCATION AS DIRECTED BY THE CONTRACTING OFFICER. 4. BORROW MATERIALS OTHER THAN STONE AND GRAVEL SHALL COME FROM CRANEY ISLAND FACILITY AS BORROW MATERIALS OTHER THAN STONE AND GRAVEL SHALL COME FROM CRANEY ISLAND FACILITY AS DIRECTED BY THE CONTRACTING OFFICER. IMPERVIOUS FILL AND SELECT FILL SHALL BE EXCAVATED FROM BORROW AREA. BORROWING LOCATION SHALL BE COORDINATED WITH THE FACILITY MANAGER. 5. THE CONTRACTOR SHALL BE RESPONSIBLE FOR WIDENING OF THE EXISTING CONSTRUCTION PAD TO THE THE CONTRACTOR SHALL BE RESPONSIBLE FOR WIDENING OF THE EXISTING CONSTRUCTION PAD TO THE LIMITS SHOWN ON SHEET 9. 6. THE WATER TABLE WITHIN THE DISPOSAL AREA VARIES DEPENDING ON THE TIME OF THE SEASON, THE WATER TABLE WITHIN THE DISPOSAL AREA VARIES DEPENDING ON THE TIME OF THE SEASON, PRECIPITATION AND AMOUNT OF DREDGE MATERIAL BEING PUMPED INTO THE DISPOSAL AREA. DUE TO A 5 TO 6 FEET DROP IN DISPOSAL AREA SURFACE ELEVATION FROM EAST TO WEST, PONDING OF WATER TO DEPTHS OF 0.5 TO 3.0 FEET AT THE WEST DIKE CAN OCCUR DUE TO EXCESS PRECIPITATION. DREDGE MATERIAL PUMPING OPERATIONS CAN ALSO CAUSE SIMILAR "PONDING" CONDITIONS. NORMALLY, DURING THE DISPOSAL AREA'S INACTIVE PERIOD, THE WATER TABLE DEPTH RANGES FROM 0.5 TO 6 FEET BELOW THE DREDGE MATERIAL SURFACE. DEWATERING SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR. 7. ALL FEATURES THAT MAY HAVE BEEN BUILT BY THE CONTRACTOR TO FACILITATE THE CONSTRUCTION OF A ALL FEATURES THAT MAY HAVE BEEN BUILT BY THE CONTRACTOR TO FACILITATE THE CONSTRUCTION OF A NEW SPILLBOX BUT NOT INDICATED ON THE CONTRACT DRAWINGS, INCLUDING TEMPORARY EARTH BERMS AND STOCKPILES OF MATERIAL, SHALL BE REMOVED BY THE CONTRACTOR PRIOR TO COMPLETION OF THE PROJECT. 8. ANY MOUNDING OF MATERIAL AROUND THE NEW SPILLBOX DUE TO THE MUDWAVE EFFECT SHALL BE ANY MOUNDING OF MATERIAL AROUND THE NEW SPILLBOX DUE TO THE MUDWAVE EFFECT SHALL BE REMOVED BY THE CONTRACTOR AFTER COMPLETING THE CONSTRUCTION OF SPILLBOX BY CUTTING A 60-FT WIDE CHANNEL TO ALLOW WATER FLOW TOWARDS THE NEW SPILLBOX. 9. WHERE NEW 36" PIPES CROSS EXISTING ROAD AND THEIR ELEVATION REQUIRES IT, A MINIMUM 3.0 FEET OF WHERE NEW 36" PIPES CROSS EXISTING ROAD AND THEIR ELEVATION REQUIRES IT, A MINIMUM 3.0 FEET OF COVER OF EARTH AND 8 INCHES OF CRUSHED STONE SHALL BE PROVIDED FOR ROAD OVER PIPES. THE RAMP GRADES SHALL NOT EXCEED 2.0% AND THE WIDTH SHALL MATCH THE EXISTING ROAD. IF NECESSARY, A TEMPORARY ROAD CAN BE BUILT. 10. THE CONTRACTOR SHALL COORDINATE OPEN EXCAVATIONS WITHIN THE VICINITY OF THE ROAD WITH THE THE CONTRACTOR SHALL COORDINATE OPEN EXCAVATIONS WITHIN THE VICINITY OF THE ROAD WITH THE CONTRACTING OFFICER, AND SHALL BACKFILL AS SOON AS PRACTICAL. 11. THERE WILL BE A GOVERNMENT LED SITE VISIT DURING THE SOLICITATION PERIOD AND, PRIOR TO THERE WILL BE A GOVERNMENT LED SITE VISIT DURING THE SOLICITATION PERIOD AND, PRIOR TO SUBMITTING A BID, ALL THE CONTRACTORS ARE HIGHLY ENCOURAGED TO ATTEND IT TO BECOME AWARE OF ACTUAL SITE CONDITIONS. TO ARRANGE A SITE VISIT OUTSIDE OF GOVERNMENT LED VISIT, CALL CRANEY ISLAND DURING NORMAL BUSINESS HOURS AT (757) 484-1021. 12. CRANEY ISLAND IS DIVIDED INTO THREE SUBCONTAINMENT AREAS WITH TWO SPILLBOXES PER CRANEY ISLAND IS DIVIDED INTO THREE SUBCONTAINMENT AREAS WITH TWO SPILLBOXES PER SUBCONTAINMENT AREA. 13. CONTRACTOR SHALL COORDINATE ALL WORK WITH OTHER CONTRACTORS' ONGOING WORK AT THE CRANEY CONTRACTOR SHALL COORDINATE ALL WORK WITH OTHER CONTRACTORS' ONGOING WORK AT THE CRANEY ISLAND FACILITY. 14. UNSATISFACTORY MATERIALS MAY BE MIXED AND BLENDED BY THE CONTRACTOR SUCH THAT THE RESULTANT UNSATISFACTORY MATERIALS MAY BE MIXED AND BLENDED BY THE CONTRACTOR SUCH THAT THE RESULTANT MIXTURE MEETS THE CLASSIFICATION REQUIREMENTS FOR A SPECIFIC BACKFILL MATERIAL. 15. DEMOLITION OF THE EXISTING SPILLBOX #2 SHALL NOT BEGIN UNTIL THE NEW SPILLBOX #2 IS FULLY DEMOLITION OF THE EXISTING SPILLBOX #2 SHALL NOT BEGIN UNTIL THE NEW SPILLBOX #2 IS FULLY OPERATIONAL.

AutoCAD SHX Text FEDERAL PROJECT: Construct a new SPILLBOX #2 as shown on plans and partially demolishing the existing spillbox. MEAN LOWER LOW WATER, 1983-2001 National Tidal Datum Epoch, was determined by using the National Ocean Service (NOS) VDATUM program, based on USACE digital leveling of the NAVD88 elevation established on CE"AR-2 Reset, 1975", CE "NICO 1993" and CE "REHANDLING, 2015", near the bulkhead at the Craney Island Rehandling Basin, Hampton Roads Va. The NAVD88 to NOS MLLW 83-01 separation values are shown to be the 0.01' different between all 3 sites. North American Vertical Datum of 1988, was determined by USACE digital leveling from City of Portsmouth BM " 166" off Craney Island to CE" AR-2 Reset,1975" then to CE "REHANDLING, 2015" near the bulkhead at Craney Island Dredged Material Management Area. MEAN RANGE OF TIDE is 2.58 feet at Craney Island Bulkhead, Hampton Roads Va, based on NOS VDATUM Program. TOPOGRAPHIC SURVEY are in feet referred to NOS MLLW and were MLLW and were and were taken on APRIL 6, 9, 10, 11, 18, 2018 and January 28, 2019. APRIL 6, 9, 10, 11, 18, 2018 and January 28, 2019. COORDINATES are referred to the Virginia State Plane Coordinate Virginia State Plane Coordinate System, South Zone, in U.S. survey feet, and are based on the and are based on the North American Datum of 1983.

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SB

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SPILLBOX

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BEGINNING OF PIPE

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ELEVATION

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MEAN HIGH WATER

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NATIONAL OCEAN SERVICE

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DEMOLITION OF EXISTING SPILLBOX #2

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CRA.2018-05-22.PS

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WETLAND DELINEATION

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ACTUAL INVERT ELEVATION UNKNOWN

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RE-ESTABLISH THE SHORELINE. SEE DETAIL 1 ON SHEET 5A.

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RE-ESTABLISH PERIMETER ROAD. SEE DETAIL 2 ON SHEET 5A.

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APPROX. LOCATION LOCATION APPROY. OF EXISTING RIP-RAPOF EXISTING RIP-RAP

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DESCRIPTION

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CRA.2018-05-22.PS

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JOSEPH MOORE

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22 APR 2019

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4 - 36" CMP PIPES TO BE REMOVED

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EXISTING SPILLBOX #2 TO BE PARTIALLY DISASSEMBLED. SEE SHEET 6 FOR DETAILS.

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AVOID WETLANDS AREA (SEE SPECIFICATIONS 01 57 19 AND 01 57 19.01 20)

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PERIMETER ROAD

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AVERAGE LENGTH OF EXISTING 36" CMP PIPES TO BE REMOVED AND BACKFILLED.

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RAMP

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COMPACTED 8" STONE BASE COURSE VDOT 21A

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COMPACTED FILL

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GEOTEXTILE IN ACCORDANCE WITH SPEC SECTION 31 05 22, TABLE 1

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EXISTING 36" PIPES TO BE REMOVED.

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6" OF VDOT #3 STONE

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SEE NOTES 1 AND 2 ON THIS SHEET

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VDOT #3 STONE

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3' THICKNESS VDOT CLASS II ARMOR STONE

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#3 VDOT STONE

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#3 VDOT STONE IN ANCHOR TRENCH

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DESCRIPTION

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CRA.2018-05-22.PS

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22 APR 2019

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1. INSTALL VDOT CLASS II RIPRAP TO THE LIMITS SHOWN. REUSE THE INSTALL VDOT CLASS II RIPRAP TO THE LIMITS SHOWN. REUSE THE EXISTING RIPRAP AS AVAILABLE. 2. THE WIDTH OF RE-ESTABLISHED RIPRAP APRON SHALL EXTEND TO THE THE WIDTH OF RE-ESTABLISHED RIPRAP APRON SHALL EXTEND TO THE LIMITS OF EXCAVATION REQUIRED FOR REMOVAL OF THE IN-PLACE SPILLWAY PIPES AND, AT MINIMUM, SHALL NOT BE LESS THAN THE WIDTH OF THE EXISTING RIP RAP APRON (APPROXIMATELY 30 FEET). 3. RECONSTRUCT ROAD ONLY WHERE EXCAVATION FOR REMOVAL OF PIPE HAS RECONSTRUCT ROAD ONLY WHERE EXCAVATION FOR REMOVAL OF PIPE HAS DISTURBED THE ROAD SURFACE. RE-ESTABLISH ROAD LIMITS AND GRADES TO MATCH PRE-CONSTRUCTION CONDITIONS.

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PERIMETER ROAD DETAIL

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SHORELINE RESTORATION AFTER PIPE REMOVAL

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FABRIC ANCHOR DETAIL (OVER EXISTING SURFACE)

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CRA.2018-05-22.PS

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22 APR 2019

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AutoCAD SHX Text REMOVE BOLTED-ON GRATED STEEL WALKWAYS (3 LEVELS AND LADDERS); PLACE WOOD WEIR BOARD IN FRONT FRAMES TO TOP OF STEEL AND THEN ADD FILL UP TO TOP OF STEEL WITH AVAILABLE IMPERVIOUS ON-SITE MATERIAL.

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DIKE FACE ELEVATION VIEW OF EXISTING SPILLBOX #2

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SIDE ELEVATION VIEW OF EXISTING SPILLBOX #2

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EXTERIOR DIKE

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APPROXIMATE EXISTING SURFACE. ACTUAL CONDITIONS MAY VARY.

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1. SHEET SD101 DEPICT THE ORIGINAL CONSTRUCTION OF THE EXISTING SPILLBOX 2 IN 2004, AND ARE INCLUDED FOR REFERENCE ONLY IN ORDER TO CLARIFY PARTIAL DEMOLITION REQUIREMENTS. EXISTING SPILLBOX SHALL BE PARTIALLY DEMOLISHED, FILLED, AND ABANDONED IN PLACE IN ACCORDANCE WITH THESE NOTES. IT SHALL BE NOTED THAT THE STRUCTURE SHOWN ON SHEET SD-101 WAS RAISED BY APPROXIMATELY 12 FEET IN THE PAST BY ADDING TWO 6-FT EXTENSIONS AND NOW IS APPROXIMATELY 33-34' TALL. 2. REMOVE ALL EXISTING CMP FROM REAR FACE OF SPILLBOX STEM WALL TO REMOVE ALL EXISTING CMP FROM REAR FACE OF SPILLBOX STEM WALL TO OUTFALL. REMOVE ALL HANDRAILS AND WALKWAY GRATINGS. REMOVE ALL LADDERS. INSTALL ALL WEIR BOARDS TO A LEVEL EQUAL TO THE TOP OF STEEL. 3. FORM AND FILL CMP OPENINGS THROUGH STEM WALL WITH SELF CONSOLIDATING FORM AND FILL CMP OPENINGS THROUGH STEM WALL WITH SELF CONSOLIDATING CONCRETE IN ACCORDANCE WITH SPECIFICATIONS. FILL INTERIOR OF SPILLBOX WITH IMPERVIOUS FILL TO AN ELEVATION LEVEL WITH TOP OF STEEL AND WEIR BOARDS. ALL FILL TO BE IN ACCORDANCE WITH SPECIFICATION SECTION 31 00 01. 4. COMPACTION OF FILL MATERIAL IS NOT REQUIRED DURING THE FILLING OF COMPACTION OF FILL MATERIAL IS NOT REQUIRED DURING THE FILLING OF SPILLBOX. 5. THE CONTRACTOR SHALL FOLLOW EM 385-1-1 "SAFETY AND HEALTH THE CONTRACTOR SHALL FOLLOW EM 385-1-1 "SAFETY AND HEALTH REQUIREMENTS" FOR EXCAVATION AND TRENCH SLOPES. 6. THE EXISTING IN-SITU MATERIAL (SOFT DREDGE SPOILS) SHALL BE EXCAVATED THE EXISTING IN-SITU MATERIAL (SOFT DREDGE SPOILS) SHALL BE EXCAVATED AWAY FROM THE FACE OF SPILLBOX PRIOR TO BEGINNING OF EXCAVATION FOR PIPE REMOVAL ON THE BACK SIDE OF SPILLBOX. 7. WHEN BACKFILLING THE EXCAVATION, MAINTAIN A MAXIMUM OF 12' OF DIFFERENTIAL WHEN BACKFILLING THE EXCAVATION, MAINTAIN A MAXIMUM OF 12' OF DIFFERENTIAL SOIL HEIGHT ON EITHER SIDE OF THE SPILLBOX.

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12" MIN TYP.

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36" PIPE OPENINGS IN CONCRETE WALL (4) - FILL OPENINGS WITH CONCRETE.

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ELEV. 41.2'

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IN-SITU DREDGE SPOILS DURING DEMOLITION. SEE NOTES 5 AND 6 ON THIS SHEET

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BACKFILL WITH IMPERVIOUS MATERIAL, SEE NOTE 3 ON THIS SHEET

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APPROXIMATE WATER LEVEL

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EXISTING SPILLBOX STRUCTURE, SEE NOTE 1 ON THIS SHEET

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4 -36" CMP PIPES TO BE REMOVED AND EXCAVATION BACKFILLED.

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12' MAX

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A SMALL SOIL BARRIER SHOULD BE CONSTRUCTED TO MINIMIZE WATER FLOW INTO THE SPILLBOX DURING DEMOLITION PHASE

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DISCHARGE PIPE SELECT FILL SECTION SECTION 1

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DISCHARGE PIPE IMPERVIOUS FILL SECTION SECTION 2

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FOR EXCAVATION AND SLOPE REQUIREMENTS SEE NOTES 2 AND 3

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CRA.2018-05-22.PS

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22 APR 2019

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1. PARTIAL DEMOLITION OF EXISTING SPILLBOX SHALL NOT COMMENCE UNTIL AFTER THE PARTIAL DEMOLITION OF EXISTING SPILLBOX SHALL NOT COMMENCE UNTIL AFTER THE NEW SPILLBOX IS FULLY FUNCTIONAL AND HAS BEEN APPROVED AND ACCEPTED BY THE GOVERNMENT. 2. BACKFILLING AND COMPACTION SHALL BE COMPLETED IN ACCORDANCE WITH SECTION BACKFILLING AND COMPACTION SHALL BE COMPLETED IN ACCORDANCE WITH SECTION 31 00 02 OF THE CONTRACT SPECIFICATIONS. 3. THE CONTRACTOR SHALL FOLLOW EM 385-1-1 "SAFETY AND HEALTH REQUIREMENTS" THE CONTRACTOR SHALL FOLLOW EM 385-1-1 "SAFETY AND HEALTH REQUIREMENTS" FOR EXCAVATION AND TRENCH SLOPES. 4. AT CONTRACTOR'S OPTION, SHEETING AND SHORING FOR EXCAVATION SUPPORT MAY BE AT CONTRACTOR'S OPTION, SHEETING AND SHORING FOR EXCAVATION SUPPORT MAY BE UTILIZED. IF SHEETING AND SHORING IS USED, THE CONTRACTOR IS SOLELY RESPONSIBLE FOR DESIGNING AND CONSTRUCTING A STABLE, TEMPORARY EXCAVATION. REFER TO SECTIONS 31 00 01 AND 31 00 02 OF CONTRACT SPECIFICATIONS. 5. SEE REFERENCE SHEETS 20 & 21 FOR EXISTING SPILLBOX DETAILS. SEE REFERENCE SHEETS 20 & 21 FOR EXISTING SPILLBOX DETAILS. 6. THE CONTRACTOR MAY REUSE THE EXCAVATED MATERIAL AS BACKFILL MATERIAL IN THE CONTRACTOR MAY REUSE THE EXCAVATED MATERIAL AS BACKFILL MATERIAL IN APPROPRIATE DIKE SECTIONS IF THE EXCAVATED MATERIAL COMPLIES WITH THE PROJECT REQUIREMENTS FOR BACKFILL MATERIAL IN ACCORDANCE WITH SPECIFICATIONS SECTION 31 00 02 HOWEVER, IT SHOULD BE NOTED THAT THE CONTRACTOR SHALL BE EXPECTING TO OBTAIN THE IMPERVIOUS FILL MATERIAL FOR BACKFILLING FROM OTHER GOVERNMENT FURNISHED BORROW AREAS AS THE EXCAVATED SOIL IS NOT LIKELY TO MEET THE PROJECT REQUIREMENTS FOR IMPERVIOUS FILL.

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NEW 30FT ACCESS ROAD - TO BE BUILT BY CONTRACTOR

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BACKFILL TO APPROX. EXISTING GROUND ELEVATION

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3 FT MINIMUM COVER

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INV.=7.50'

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STA: 7+75.0 INV.=29.62' END BEND HERE

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STA: 2+75.0 INV.=8.79' BEGIN BEND HERE

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COMPACTED FILL

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CREST

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LF EDGE

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35.FT

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MINIMUM EXCAVATION LIMITS. SEE SHEET 14.

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MAINTAIN MINIMUM 3' COVER OVER PIPES

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CRA.2018-05-22.PS

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JOSEPH MOORE

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STONE MATTRESS TOPPED BY RIPRAP SEE SHEET 12 FOR OUTLET STRUCTURE DETAIL.

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GANGWAY SEE SHEET S502 FOR GANGWAY DETAIL

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EXCAVATE CHANNEL TO ALLOW FLOW TOWARDS SPILLBOX

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PERIMETER ROAD PROPOSED SURFACE

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MAKE SMOOTH TRANSITION INTO EXISTING SURFACE

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MAKE SMOOTH TRANSITION INTO EXISTING SURFACE

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NEW 36" HDPE PIPE INV. 8.05'

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MINIMUM 3.0FT FEET COVER

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22 APR 2019

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PERIMETER ROAD

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BEGINNING OF GRADING FOR PERIMETER ROAD

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EROSION AND SEDIMENT CONTROL NOTES:

UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL

EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED

AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND

SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL

HANDBOOK (3RD EDITION, 1992).

THE CONTRACTOR SHALL APPLY PERMANENT OR TEMPORARY SOIL

STABILIZATION TO ALL DENUDED OR DISTURBED AREAS WITHIN 7 DAYS

AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. SOIL

STABILIZATION MUST ALSO BE APPLIED TO DENUDED OR DISTURBED

AREAS WHICH MAY NOT BE AT FINAL GRADE BUT WHICH WILL REMAIN

UNDISTURBED FOR LONGER THAN 14 DAYS. SOIL STABILIZATION MEASURES

INCLUDE VEGETATIVE ESTABLISHMENT, MULCHING AND THE EARLY

APPLICATION OF GRAVEL BASE MATERIAL ON AREAS TO BE PAVED.

THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES

PERIODICALLY AND AFTER EACH RUNOFF PRODUCING RAINFALL EVENT.

ANY NECESSARY REPAIRS TO MAINTAIN THE EFFECTIVENESS OF THE

EROSION CONTROL DEVICES AND CLEANUP OF SEDIMENT ARE THE

RESPONSIBILITY OF THE CONTRACTOR AND SHALL BE MADE IMMEDIATELY.

STOCK PILES OF SOIL AND OTHER ERODIBLE MATERIALS SHALL BE

STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE

CONTRACTOR IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND

PERMANENT STABILIZATION STOCKPILES ON SITE AS WELL AS FOR

MATERIALS TRANSPORTED FROM THE PROJECT SITE.

EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR

PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH,

AS REQUIRED BY THE CONTRACTING OFFICER’S REPRESENTATIVE AND

DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT

OFF-SITE PROPERTY OR STORM DRAINAGE SYSTEMS.

THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION AND MAINTENANCE

OF ANY ADDITIONAL CONTROL MEASURES NECESSARY TO PREVENT EROSION

AND SEDIMENTATION AS DETERMINED NECESSARY BY THE CONTRACTING

OFFICER’S REPRESENTATIVE.

TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE NOT TO BE

REMOVED UNTIL ALL DISTURBED AREAS ARE STABILIZED. AFTER STABILIZATION

IS COMPLETE, ALL MEASURES SHALL BE REMOVED WITHIN 30 DAYS.

TRAPPED SEDIMENT SHALL BE SPREAD AND SEEDED.

ALL DISTURBED AREAS SHALL DRAIN TO APPROVED SEDIMENT CONTROL

MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING

SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.

ALL EROSION AND SEDIMENT CONTROL MEASURES INDICATED ON THIS PLAN

ARE THE MINIMUM REQUIRED. THE CONTRACTOR IS RESPONSIBLE FOR THE

INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY

TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE

CONTRACTING OFFICER’S REPRESENTATIVE.

ALL SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP

SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY

LAND-DISTURBING ACTIVITY, AND SHALL BE MADE FUNCTIONAL PRIOR TO

UPLAND LAND DISTURBANCE.

CONTRACTOR SHALL MONITOR AND TAKE PRECAUTIONS TO CONTROL DUST

INCLUDING (BUT NOT LIMITED TO) USE OF WATER, LIMITING THE NUMBER OF

VEHICLES ALLOWED ON SITE, MINIMIZING THE OPERATING SPEED OF ALL

VEHICLES, OR PROVIDING OTHER ACCEPTABLE CONTROL MEASURES.

PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL

A GROUND COVER IS ACHIEVED, THAT IN THE OPINION OF THE CONTRACTING

OFFICER, IS UNIFORM AND MATURE ENOUGH TO SURVIVE, AND WILL INHIBIT

EROSION.

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COMPACTED 8" STONE BASE COURSE VDOT 21A

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COMPACTED FILL

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GRAVEL SURFACE FOR PERIMETER ROAD

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NORFOLK DISTRICT FILE NO.:

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DESCRIPTION

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CRA.2018-05-22.PS

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JOSEPH MOORE

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22 APR 2019

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1. RECONSTRUCT ROAD ONLY WHERE EXCAVATION FOR REMOVAL/PLACEMENT RECONSTRUCT ROAD ONLY WHERE EXCAVATION FOR REMOVAL/PLACEMENT OF PIPE HAS DISTURBED THE ROAD SURFACE (SEE SHEET 10).

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SHEET NOTES:

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2. STAPLE FENCING TO THE POSTS.

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4. BACKFILL AND COMPACT

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THE EXCAVATED SOIL.

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INTO THE TRENCH

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THE WIRE FENCE AND EXTEND IT

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3. ATTACH THE FILTER FABRIC TO

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1. SET POSTS AND EXCAVATE A

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THE LINE OF POSTS.

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SHEET FLOW INSTALLATION (PERSPECTIVE VIEW)

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EXTENSION OF FABRIC AND WIRE INTO THE TRENCH

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FILTER FABRIC

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WIRE

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FLOW

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FLOW

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6' MAX.

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SILT FENCE DETAIL

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PERIMETER ROAD DETAIL

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BEACH SIDE

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20' PERIMETER ROAD

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4-36" HDPE

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PIPE INV +7.50

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ELEV +12.5

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VDOT CLASS II RIPRAP 3' THICK

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GEOTEXTILE BENEATH THE FILTER MATTRESS, SEE SECTION 31 05 22, TABLE 1.

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6" OF VDOT #3 STONE

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4' OVERLAP OF GEOTEXTILE

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VDOT #3 STONE

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DRAINAGE GEOTEXTILE, SEE SECTION 31 05 22, TABLE 2.

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8" STONE BASE COURSE VDOT 21A

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COMPACTED SELECT FILL

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SEE SHEETS 15 & 16 FOR MARINE MATTRESS DETAILS

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1' THICK VDOT #57 STONE

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ELEV +12.5

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VDOT CLASS II RIP-RAP

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#57 STONE

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GEOTEXTILE BENEATH THE FILTER MATTRESS, SEE SECTION 31 05 22, TABLE 1.

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NORFOLK DISTRICT FILE NO.:

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CRA.2018-05-22.PS

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JOSEPH MOORE

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22 APR 2019

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%%UNOTES:

AutoCAD SHX Text PIPES SHALL BE SMOOTH WALL PE PIPES IN ACCORDANCE WITH SECTION 33 40 00 OF THE CONTRACT SPECIFICATIONS. RIPRAP SHALL CONFORM TO SECTION 35 31 19 OF THE CONTRACT SPECIFICATIONS. GEOTEXTILES SHALL BE IN ACCORDANCE WITH APPROPRIATE PARAGRAPH OF SPECS SECTION 310522. DIMENSIONS SHOWN ARE MINIMUM. ACTUAL MEASUREMENTS MAY VARY WITH MANUFACTURERS TOLERANCES.

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GEOTEXTILE (SEE NOTE 4 ON THIS SHEET)

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COMPACTED SELECT FILL

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#57 STONE

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UNDISTURBED EARTH

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GEOTEXTILE

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DISCHARGE PIPE FILTER DRAIN (SECTION 1) STA 1+80 TO 3+40

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FOR EXCAVATION AND SLOPE REQUIREMENTS SEE NOTES 2 AND 3 (TYP.)

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IMPERVIOUS FILL

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DISCHARGE PIPE IMPERVIOUS FILL (SECTION 2) STA 3+40 TO 4+90

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SELECT OR IMPERVIOUS FILL MATERIAL (SEE SPECIFICATIONS AND NOTE 7 ON THIS SHEET)

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EXISTING GRADE AND COVER

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12" VDOT NO.3 STONE

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GEOTEXTILE (SEE NOTE 4 ON THIS SHEET)

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TRENCH/BACKFILL (SECTION 3) STA 4+90 TO BASE OF SPILLBOX

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3" MIN

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VDOT #57 STONE

AutoCAD SHX Text PLACEMENT OF ADDITIONAL BRIDGING LAYER MAY BE REQUIRED PRIOR TO PLACEMENT OF GEOTEXTILE. SEE NOTE 8 ON THIS SHEET AND SPEC 31 00 02.

AutoCAD SHX Text BACKFILLING AND COMPACTION SHALL BE COMPLETED IN ACCORDANCE WITH SECTION 31 00 02 OF THE CONTRACT SPECIFICATIONS.

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