GC-601.pdf
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- Solicitation number
- W912DS24B0015
About this file
This is a construction sequence sheet for the Spring Creek North Ecosystem Restoration Project in Brooklyn and Queens, New York, managed by the US Army Corps of Engineers. The document details timing restrictions and a comprehensive construction schedule spanning 548 days from notice to proceed.
The sheet outlines specific timing restrictions for water-based and land-based work activities, accounting for diamondback terrapin overwintering/nesting periods and essential fish habitat constraints. The construction sequence includes nine major phases: USACE bid process (1 day), site preparation and mobilization (25 days), invasive species management/demolition/access (136 days), upland to wetland conversion areas (both west and east, 39 and 80 days respectively), channel modifications (40 days), wetland restoration areas (154 days), upland placement areas (195 days), and project closeout (50 days). Key activities include wetland planting, upland seeding, tree clearing/grubbing, invasive species removal, and thin layer placement on existing tidal wetland. The project requires permanent stabilization with 80% vegetative cover for pervious surfaces and 85% vegetation survival within a 5-year monitoring period for tidal areas.
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GC-601
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LOCATION TYPE
WINTER SPRING SUMMER AUTUMN
NOTES
DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV
WATER-BASED
RESTRICTIONS
DIAMONDBACK TERRAPINS OVERWINTERING NO IN-CHANNEL WORK MAY OCCUR.
ESSENTIAL FISH HABITAT NO IN-CHANNEL WORK MAY OCCUR.
LAND BASED
RESTRICTIONS
DIAMONDBACK TERRAPINS NESTING TERRAPIN NESTING HABITAT PROXIMAL TO MARSHES AND OPEN WATER AREAS
TO BE FENCED OFF TO PREVENT TERRAPIN ACCESS.
MIGRATORY BIRD NESTING NO VEGETATION CLEARING ACTIVITIES MAY OCCUR.
WORK TYPE
WINTER SPRING SUMMER AUTUMN
NOTES
DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV
IN-CHANNEL X X X X X X X X X X X X X X X X X X X X X X X X X X
TREE CLEARING/GRUBBING X X X X X X X X X X X X X X X X X X X X X X X X
THIN LAYER PLACEMENT ON EXISTING TIDAL WETLAND BIOLOGIST OVERSIGHT REQUIRED OUTSIDE OF TERRAPIN OVERWINTERING
PERIOD. NO ACCESS THROUGH CHANNELS DURING OVERWINTERING PERIOD.
EXCAVATION OF UPLAND AREAS TERRAPIN NESTING HABITAT TO BE FENCED OFF BEFORE NESTING SEASON
BEGINS.
UPLAND FILL PLACEMENT
INVASIVE SPECIES REMOVAL-MOWING INITIAL MOWING CANNOT OCCUR DURING THE MIGRATORY BIRD NESTING
PERIOD; ONCE THE SITE IS DISTURBED MOWING IS ALLOWED YEAR-ROUND.
INVASIVE SPECIES REMOVAL-FIRST HERBICIDE APPLICATION X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
INVASIVE SPECIES REMOVAL- FOLLOW UP HERBICIDE APPLICATION X X X X X X X X X X X X X X X X X X X X X
INVASIVE SPECIES REMOVAL- CUT STUMP METHOD X X X X X X X X X X X X X X X X X X X X X X X X X X X
WETLAND PLANTING X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
UPLAND SEEDING X X X X X X X X X X X X X X X X X X X X X X X X X X SEE LP-501. MATTING REQUIRED ON SLOPES 3:1 OR GREATER.
UPLAND PLANTING SHRUBS/TREES X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
X =WORK NOT ALLOWED =WORK ALLOWED =WORK ALLOWED WITH RESTRICTIONS
TIME PERIODS WHEN WORK IS ALLOWED:
=WATER-BASED RESTRICTION =LAND-BASED RESTRICTION
TIMING RESTRICTIONS:
GENERAL NOTES
1. IN AREAS WHERE SOIL DISTURBANCE ACTIVITY HAS TEMPORARILY OR PERMANENTLY CEASED, THE APPLICATION OF SOIL STABILIZATION MEASURES MUST BE INITIATED BY THE END
OF THE NEXT BUSINESS DAY AND COMPLETED WITHIN FOURTEEN (14) DAYS FROM THE DATE THE CURRENT SOIL DISTURBANCE ACTIVITY CEASED.
2. ALL AREAS LIMITED BY TIMING RESTRICTIONS SHALL HAVE STABILIZATION MEASURES APPLIED PRIOR TO RESTRICTING ACCESS TO THOSE AREAS.
3. PERMANENT STABILIZATION IS DEFINED AS "A MINIMUM UNIFORM, PERENNIAL 80% VEGETATIVE COVER OVER THE ENTIRE PERVIOUS SURFACE OR OTHER PERMANENT
NON-VEGETATIVE COVER WITH A DENSITY SUFFICIENT TO RESIST ACCELERATED EROSION. CUT AND FILL SLOPES SHALL BE CAPABLE OF RESISITNG FAILURE DUE TO SLUMPING, SLIDING, OR MOVEMENTS." PERMANENT STABILIZATION SHALL BE ACHIEVED ON ALL DISTURBED AREAS NOT SUBJECT TO TIDAL INUNDATION PRIOR TO FINAL SITE INSPECTION AND CERTIFICATION. FINAL STABILIZATION OF TIDAL AREAS SHALL BE DEFINED BY A MINIMUM 85% VEGETATION SURVIVAL WITHIN THE 5 YEAR MONITORING PERIOD.
CONSTRUCTION SCHEDULE:
TASK NAME DURATION (DAYS) START (DAYS FROM
NOTICE TO PROCEED)
FINISH (DAYS FROM
NOTICE TO PROCEED)
1. USACE BID PROCESS 1 0 0
1.1. CONSTRUCTION START DATE 1 0 0
2. SITE PREPARATION AND MOBILIZATION 25 0 36
2.1. INSTALL SITE SAFETY AND SECURITY MEASURES 5 0 7
2.2. COMPLETE MOBILIZATION INCLUDING INSTALLATION OF TEMPORARY FACILITIES
AND ESTABLISHMENT OF CONSTRUCTION ACCESS, STAGING AREAS, AND STOCKPILE
LOCATIONS. PROTECT EXISTING UNDERGROUND UTILITIES.
20 9 36
3. INVASIVE SPECIES MANAGEMENT, DEMOLITION, AND ACCESS 136 9 202
3.1. CLEAR AND GRUB AS NECESSARY FOR THE INSTALLATION OF PERIMETER
CONTROLS 5 9 15
3.2. INSTALL PERIMETER SOIL EROSION AND SEDIMENT CONTROLS 10 14 27
3.3. INSTALL TEMPORARY CROSSING OVER SPRING CREEK 15 28 48
3.4. WETLAND RESTORATION AREA ADJACENT TO THE BELT PARKWAY (CD-106 TO 108) 110 28 182
3.4.1. FIRST MOW 2 28 29
3.4.2. FIRST HERBICIDE TREATMENT 2 83 84
3.4.3. SECOND MOW 2 115 118
3.4.4. SECOND HERBICIDE TREATMENT 2 181 182
3.5. UPLAND ENHANCEMENT AREAS DEFINED ON G-402 108 49 202
3.5.1. FIRST MOW 10 49 62
3.5.2. TREE REMOVAL AND STUMP TREATMENT 30 49 90
3.5.3. FIRST HERBICIDE TREATMENT 5 85 91
3.5.4. SECOND MOW 10 122 135
3.5.5. SECOND HERBICIDE TREATMENT 5 196 202
3.6. UPLAND TO WETLAND CONVERSION AREA (WEST) DEFINED ON G-402 4 28 31
3.6.1. CLEAR AND GRUB 4 28 31
3.7. UPLAND TO WETLAND CONVERSION AREA (EAST) DEFINED ON G-402 8 49 58
3.7.1. CLEAR AND GRUB 8 49 58
3.8. UPLAND PLACEMENT AREAS DEFINED ON G-402 4 28 31
3.8.4. SCARIFY PAVEMENT 4 28 31
3.9. IMPROVE ACCESS ROADS & INTERIOR FENCE REMOVAL 108 27 178
3.9.1. START FOLLOWING E&S INSTALLATION 0 27 27
3.9.2. ALL VEGETATION REMOVAL ACTIVITIES COMPLETE 0 171 171
3.9.3. END ACCESS ROADS INSTALLATION 5 174 178
4. UPLAND TO WETLAND CONVERSION AREA (WEST) DEFINED ON G-402 39 34 86
4.1. INSTALL SILT FENCE FOR E&S CONTROL AND TURTLE EXCLUSION 2 34 35
4.2. EXCAVATE AND HAUL MATERIAL TO UPLAND PLACEMENT AREAS 16 36 57
4.3. PLACE CLEAN CAP 7 58 66
4.4. REMOVE SILT FENCE 1 69 69
4.5. PLANT WETLAND VEGETATION 13 70 86
5. UPLAND TO WETLAND CONVERSION AREA (EAST) DEFINED ON G-402 80 59 171
5.1. INSTALL SILT FENCE FOR E&S CONTROL AND TURTLE EXCLUSION 2 59 62
5.2. EXCAVATE AND HAUL MATERIAL TO UPLAND PLACEMENT AREAS (LEAVE ACCESS
ROAD FOR CHANNEL MODIFICATION, IF NECESSARY) 31 63 105
5.3. PLACE CLEAN CAP 14 106 125
5.4. REMOVE SILT FENCE 1 126 126
5.5. PLANT WETLAND VEGETATION 32 127 171
6. CHANNEL MODIFICATIONS DEFINED ON G-402 40 160 216
6.1. CLEAR AND EXCAVATE AS NECESSARY TO INSTALL ACCESS ROAD AND RAMP 5 160 164
6.2. INSTALL THE WATER CONTROL STRUCTURE AND ROCK CHECK DAM 2 167 168
6.3. INSTALL THE ACCESS ROAD WITHIN RALPH’S CREEK. 2 169 170
6.4. COMPLETE EARTHWORK FOR CHANNEL MODIFICATION/FILL 15 171 191
6.5. INSTALL COIR LOGS ALONG THE EDGE OF ADJACENT MARSH PLATFORM, WHERE
PRACTICAL 10 195 206
6.6. REMOVE ACCESS ROAD, WATER CONTROL STRUCTURE, AND ROCK CHECK DAM 4 209 212
6.7. RESTORE CHANNEL BANKS AND MARSH PLATFORM, AS NECESSARY 2 213 216
7. WETLAND RESTORATION AREAS DEFINED ON G-402 154 260 478
7.1. INSTALL CONSTRUCTION ENTRANCE OFF OF THE BELT PARKWAY AND ACCESS
MATS, AS NECESSARY 5 260 267
7.2. INSTALL COIR LOGS AND MUDFLAT STABILIZATION MEASURES 15 267 288
7.3. CONSTRUCT PIPE SYSTEM 25 288 323
7.4. PLACE SAND ON THE MARSH PLATFORM 70 323 426
7.5. REMOVE PIPE SYSTEM AND ACCESS MATS 5 426 433
7.6. PLANT WETLAND VEGETATION 34 433 478
8. UPLAND PLACEMENT AREAS DEFINED ON G-402 195 63 342
8.1. SCREEN AND PLACE EXCAVATED MATERIAL 41 63 119
8.2. INSTALL STORMWATER INFRASTRUCTURE 15 120 140
8.3. INSTALL CLEAN CAP 35 141 190
8.4. PLANT UPLAND VEGETATION 41 281 337
8.5. REMOVE EARTH DIKES AND INSTALL COMPOST FILTER SOCK AT ACCESS
LOCATIONS FOR THE UPLAND PLACEMENT AREAS 1 342 342
9. PROJECT CLOSEOUT 50 479 548
9.1. SITE WALK THROUGH & PUNCH LIST 5 479 485
9.2. CONTRACTOR ADDRESSES PUNCH LIST 30 486 527
9.3. FINAL SITE WALK THROUGH 5 528 534
9.4. DEMOBILIZATION 10 535 548
CONSTRUCTION DURATION 384 0 548
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LOCATION TYPE
WINTER SPRING SUMMER AUTUMN
NOTES
DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV
WATER-BASED
RESTRICTIONS
DIAMONDBACK TERRAPINS OVERWINTERING NO IN-CHANNEL WORK MAY OCCUR.
ESSENTIAL FISH HABITAT NO IN-CHANNEL WORK MAY OCCUR.
LAND BASED
RESTRICTIONS
DIAMONDBACK TERRAPINS NESTING TERRAPIN NESTING HABITAT PROXIMAL TO MARSHES AND OPEN WATER AREAS
TO BE FENCED OFF TO PREVENT TERRAPIN ACCESS.
MIGRATORY BIRD NESTING NO VEGETATION CLEARING ACTIVITIES MAY OCCUR.
WORK TYPE
WINTER SPRING SUMMER AUTUMN
NOTES
DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV
IN-CHANNEL X X X X X X X X X X X X X X X X X X X X X X X X X X
TREE CLEARING/GRUBBING X X X X X X X X X X X X X X X X X X X X X X X X
THIN LAYER PLACEMENT ON EXISTING TIDAL WETLAND BIOLOGIST OVERSIGHT REQUIRED OUTSIDE OF TERRAPIN OVERWINTERING
PERIOD. NO ACCESS THROUGH CHANNELS DURING OVERWINTERING PERIOD.
EXCAVATION OF UPLAND AREAS TERRAPIN NESTING HABITAT TO BE FENCED OFF BEFORE NESTING SEASON
BEGINS.
UPLAND FILL PLACEMENT
INVASIVE SPECIES REMOVAL-MOWING INITIAL MOWING CANNOT OCCUR DURING THE MIGRATORY BIRD NESTING
PERIOD; ONCE THE SITE IS DISTURBED MOWING IS ALLOWED YEAR-ROUND.
INVASIVE SPECIES REMOVAL-FIRST HERBICIDE APPLICATION X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
INVASIVE SPECIES REMOVAL- FOLLOW UP HERBICIDE APPLICATION X X X X X X X X X X X X X X X X X X X X X
INVASIVE SPECIES REMOVAL- CUT STUMP METHOD X X X X X X X X X X X X X X X X X X X X X X X X X X X
WETLAND PLANTING X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
UPLAND SEEDING X X X X X X X X X X X X X X X X X X X X X X X X X X SEE LP-501. MATTING REQUIRED ON SLOPES 3:1 OR GREATER.
UPLAND PLANTING SHRUBS/TREES X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
X =WORK NOT ALLOWED =WORK ALLOWED =WORK ALLOWED WITH RESTRICTIONS
TIME PERIODS WHEN WORK IS ALLOWED:
=WATER-BASED RESTRICTION =LAND-BASED RESTRICTION
TIMING RESTRICTIONS:
GENERAL NOTES
1. IN AREAS WHERE SOIL DISTURBANCE ACTIVITY HAS TEMPORARILY OR PERMANENTLY CEASED, THE APPLICATION OF SOIL STABILIZATION MEASURES MUST BE INITIATED BY THE END
OF THE NEXT BUSINESS DAY AND COMPLETED WITHIN FOURTEEN (14) DAYS FROM THE DATE THE CURRENT SOIL DISTURBANCE ACTIVITY CEASED.
2. ALL AREAS LIMITED BY TIMING RESTRICTIONS SHALL HAVE STABILIZATION MEASURES APPLIED PRIOR TO RESTRICTING ACCESS TO THOSE AREAS.
3. PERMANENT STABILIZATION IS DEFINED AS "A MINIMUM UNIFORM, PERENNIAL 80% VEGETATIVE COVER OVER THE ENTIRE PERVIOUS SURFACE OR OTHER PERMANENT
NON-VEGETATIVE COVER WITH A DENSITY SUFFICIENT TO RESIST ACCELERATED EROSION. CUT AND FILL SLOPES SHALL BE CAPABLE OF RESISITNG FAILURE DUE TO SLUMPING, SLIDING, OR MOVEMENTS." PERMANENT STABILIZATION SHALL BE ACHIEVED ON ALL DISTURBED AREAS NOT SUBJECT TO TIDAL INUNDATION PRIOR TO FINAL SITE INSPECTION AND CERTIFICATION. FINAL STABILIZATION OF TIDAL AREAS SHALL BE DEFINED BY A MINIMUM 85% VEGETATION SURVIVAL WITHIN THE 5 YEAR MONITORING PERIOD.
CONSTRUCTION SCHEDULE:
TASK NAME DURATION (DAYS) START (DAYS FROM
NOTICE TO PROCEED)
FINISH (DAYS FROM
NOTICE TO PROCEED)
1. USACE BID PROCESS 1 0 0
1.1. CONSTRUCTION START DATE 1 0 0
2. SITE PREPARATION AND MOBILIZATION 25 0 36
2.1. INSTALL SITE SAFETY AND SECURITY MEASURES 5 0 7
2.2. COMPLETE MOBILIZATION INCLUDING INSTALLATION OF TEMPORARY FACILITIES
AND ESTABLISHMENT OF CONSTRUCTION ACCESS, STAGING AREAS, AND STOCKPILE
LOCATIONS. PROTECT EXISTING UNDERGROUND UTILITIES.
20 9 36
3. INVASIVE SPECIES MANAGEMENT, DEMOLITION, AND ACCESS 136 9 202
3.1. CLEAR AND GRUB AS NECESSARY FOR THE INSTALLATION OF PERIMETER
CONTROLS 5 9 15
3.2. INSTALL PERIMETER SOIL EROSION AND SEDIMENT CONTROLS 10 14 27
3.3. INSTALL TEMPORARY CROSSING OVER SPRING CREEK 15 28 48
3.4. WETLAND RESTORATION AREA ADJACENT TO THE BELT PARKWAY (CD-106 TO 108) 110 28 182
3.4.1. FIRST MOW 2 28 29
3.4.2. FIRST HERBICIDE TREATMENT 2 83 84
3.4.3. SECOND MOW 2 115 118
3.4.4. SECOND HERBICIDE TREATMENT 2 181 182
3.5. UPLAND ENHANCEMENT AREAS DEFINED ON G-402 108 49 202
3.5.1. FIRST MOW 10 49 62
3.5.2. TREE REMOVAL AND STUMP TREATMENT 30 49 90
3.5.3. FIRST HERBICIDE TREATMENT 5 85 91
3.5.4. SECOND MOW 10 122 135
3.5.5. SECOND HERBICIDE TREATMENT 5 196 202
3.6. UPLAND TO WETLAND CONVERSION AREA (WEST) DEFINED ON G-402 4 28 31
3.6.1. CLEAR AND GRUB 4 28 31
3.7. UPLAND TO WETLAND CONVERSION AREA (EAST) DEFINED ON G-402 8 49 58
3.7.1. CLEAR AND GRUB 8 49 58
3.8. UPLAND PLACEMENT AREAS DEFINED ON G-402 4 28 31
3.8.4. SCARIFY PAVEMENT 4 28 31
3.9. IMPROVE ACCESS ROADS & INTERIOR FENCE REMOVAL 108 27 178
3.9.1. START FOLLOWING E&S INSTALLATION 0 27 27
3.9.2. ALL VEGETATION REMOVAL ACTIVITIES COMPLETE 0 171 171
3.9.3. END ACCESS ROADS INSTALLATION 5 174 178
4. UPLAND TO WETLAND CONVERSION AREA (WEST) DEFINED ON G-402 39 34 86
4.1. INSTALL SILT FENCE FOR E&S CONTROL AND TURTLE EXCLUSION 2 34 35
4.2. EXCAVATE AND HAUL MATERIAL TO UPLAND PLACEMENT AREAS 16 36 57
4.3. PLACE CLEAN CAP 7 58 66
4.4. REMOVE SILT FENCE 1 69 69
4.5. PLANT WETLAND VEGETATION 13 70 86
5. UPLAND TO WETLAND CONVERSION AREA (EAST) DEFINED ON G-402 80 59 171
5.1. INSTALL SILT FENCE FOR E&S CONTROL AND TURTLE EXCLUSION 2 59 62
5.2. EXCAVATE AND HAUL MATERIAL TO UPLAND PLACEMENT AREAS (LEAVE ACCESS
ROAD FOR CHANNEL MODIFICATION, IF NECESSARY) 31 63 105
5.3. PLACE CLEAN CAP 14 106 125
5.4. REMOVE SILT FENCE 1 126 126
5.5. PLANT WETLAND VEGETATION 32 127 171
6. CHANNEL MODIFICATIONS DEFINED ON G-402 40 160 216
6.1. CLEAR AND EXCAVATE AS NECESSARY TO INSTALL ACCESS ROAD AND RAMP 5 160 164
6.2. INSTALL THE WATER CONTROL STRUCTURE AND ROCK CHECK DAM 2 167 168
6.3. INSTALL THE ACCESS ROAD WITHIN RALPH’S CREEK. 2 169 170
6.4. COMPLETE EARTHWORK FOR CHANNEL MODIFICATION/FILL 15 171 191
6.5. INSTALL COIR LOGS ALONG THE EDGE OF ADJACENT MARSH PLATFORM, WHERE
PRACTICAL 10 195 206
6.6. REMOVE ACCESS ROAD, WATER CONTROL STRUCTURE, AND ROCK CHECK DAM 4 209 212
6.7. RESTORE CHANNEL BANKS AND MARSH PLATFORM, AS NECESSARY 2 213 216
7. WETLAND RESTORATION AREAS DEFINED ON G-402 154 260 478
7.1. INSTALL CONSTRUCTION ENTRANCE OFF OF THE BELT PARKWAY AND ACCESS
MATS, AS NECESSARY 5 260 267
7.2. INSTALL COIR LOGS AND MUDFLAT STABILIZATION MEASURES 15 267 288
7.3. CONSTRUCT PIPE SYSTEM 25 288 323
7.4. PLACE SAND ON THE MARSH PLATFORM 70 323 426
7.5. REMOVE PIPE SYSTEM AND ACCESS MATS 5 426 433
7.6. PLANT WETLAND VEGETATION 34 433 478
8. UPLAND PLACEMENT AREAS DEFINED ON G-402 195 63 342
8.1. SCREEN AND PLACE EXCAVATED MATERIAL 41 63 119
8.2. INSTALL STORMWATER INFRASTRUCTURE 15 120 140
8.3. INSTALL CLEAN CAP 35 141 190
8.4. PLANT UPLAND VEGETATION 41 281 337
8.5. REMOVE EARTH DIKES AND INSTALL COMPOST FILTER SOCK AT ACCESS
LOCATIONS FOR THE UPLAND PLACEMENT AREAS 1 342 342
9. PROJECT CLOSEOUT 50 479 548
9.1. SITE WALK THROUGH & PUNCH LIST 5 479 485
9.2. CONTRACTOR ADDRESSES PUNCH LIST 30 486 527
9.3. FINAL SITE WALK THROUGH 5 528 534
9.4. DEMOBILIZATION 10 535 548
CONSTRUCTION DURATION 384 0 548
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