P1102_GC101 - CONSTRUCTION PHASING PLAN - PHASE 1.pdf
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- Solicitation number
- N4008526R0004
About this file
This is a Construction Phasing Plan drawing for a Weapons Magazine & Ordnance Operations Facility at Naval Submarine Base New London in Groton, Connecticut. The project, designated P-1102, is being executed by NAVFAC Mid-Atlantic and is managed by contractor Jacobs Engineering.
Phase 1 construction is divided into three subphases (1A, 1B, and 1C) and includes multiple critical activities: Phase 1A involves constructing north and south wetland mitigation areas, establishing temporary security fencing around existing magazines (A94-A97, A100-A109, A113, A114) to remain operational, demolishing four existing magazines (A98, A99, A110, A111) with associated utilities and pavements, performing rock blasting and excavation for the operations building, constructing a permanent stormwater facility east of existing structure A114, and completing the operations building with site preparation, drainage infrastructure, utility installation, access roads, and parking. Phase 1B includes installing temporary sediment traps, rerouting and demolishing existing utilities, and constructing a Type H magazine structure. Phase 1C involves demolition of existing Building 524 and associated utilities and pavements. Critical restrictions include that contractor employees must complete explosive safety training prior to site access, equipment fueling is prohibited within the munitions compound, contractors must submit spark-producing equipment for approval, all construction activities must cease immediately upon request by security forces or the contracting officer, active magazine access remains under government control, and temporary security fencing must be installed and fully grounded before existing perimeter fence demolition. The drawing was approved on May 27, 2025, with revisions noted for Amendments 1 and 2 dated May 19, 2026, and June 26, 2026, respectively.
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Text version
5 110
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GENERAL SHEET NOTES
GRAPHIC SCALE
PHASING NOTES
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GC101
OPERATIONS
BUILDING
EXST-001
(A114)TYPE H-001
PHASE 1A
1. CONSTRUCT NORTH AND SOUTH WETLAND MITIGATION AREAS.
2. PROVIDE TEMPORARY CONSTRUCTION ACCESS AND SECURITY FENCING
TO ENSURE A SECURE PERIMETER AROUND EXISTING MAGAZINES TO
REMAIN IN PLACE DURING PHASE 1 OPERATIONS (MAGAZINES A94-A97,
A-100-A104, A105-A109, A113, AND A114). REFER TO CIVIL DETAIL A1/CS504
FOR SECURITY FENCING INFORMATION.
3. DEMOLISH EXISTING MAGAZINES A98, A99, A110, AND A111 INCLUDING
ASSOCIATED PAVEMENTS AND UTILITIES. INSTALL TEMPORARY
SEDIMENT TRAPS 1 AND 3
4. ROCK BLASTING AND EXCAVATION FOR OPERATIONS BUILDING AND
NEAR MAGAZINES A98, A99, A110, AND A111.
5. CONSTRUCT PERMANENT STORM WATER FACILITY A EAST OF EXST-001
(A114). MAINTAIN TREATMENT CHAMBERS OFFLINE UNTIL FINAL SITE
STABILIZATION.
6. OPERATIONS BUILDING CONSTRUCTION INCLUDING SITE PREPARATION,
DRAINAGE INFRASTRUCTURE, UTILITY INSTALLATION, ACCESS ROAD, AND
PARKING LOT. CONVERT TEMPORARY SEDIMENT TRAP 1 TO PERMANENT
STORM WATER FACILITY. MAINTAIN TREATMENT CHAMBERS OFFLINE
UNTIL FINAL SITE STABILIZATION.
7. TRANSFER OF PERSONNEL TO OPERATIONS BUILDING.
PHASE 1B
1. INSTALL TEMPORARY SEDIMENT TRAP 2. REROUTE AND DEMOLISH
EXISTING UTILITIES NECESSARY TO CONSTRUCT TYPE H MAGAZINE.
2. SITE PREPARATION, UTILITY INSTALLATION, AND CONSTRUCTION OF
TYPE H MAGAZINE. CONVERT TEMPORARY SEDIMENT TRAP 2 TO
PERMANENT STORM WATER FACILITY. MAINTAIN TREATMENT
CHAMBERS OFFLINE UNTIL FINAL SITE STABILIZATION.
PHASE 1C
1. DEMOLITION OF EXISTING BUILDING 524, UTILITIES, AND PAVEMENTS.
A1 CONSTRUCTION PHASING PLAN - PHASE 1
1" = 100'
ROCK BLASTING AND
EXCAVATION AREA (PHASE 1A)
A99 A110
A111A98
STORM WATER
FACILITY A
ROCK BLASTING AND
EXCAVATION
EXISTING
BUILDING 524
1. REFER TO SHEETS C-001 TO C-004 FOR ADDITIONAL NOTES, EROSION
CONTROL SEQUENCING, CONTRACTOR LAY DOWN AREA, AND SITE
ACCESS.
2. REFER TO SHEETS CD100 TO CD103 FOR SITE DEMOLITION
INFORMATION.
3. REFER TO SHEETS CS100 TO CS103 FOR SITE LAYOUT INFORMATION.
4. REFER TO SHEETS CG100 TO CG103 FOR SITE GRADING AND
DRAINAGE INFORMATION.
5. REFER TO SHEETS CU100 TO CU103 FOR SITE UTILITY INFORMATION.
6. REFER TO SHEET CE001 TO CE502 FOR WETLAND MITIGATION
INFORMATION.
7. MAINTAIN ACCESS AND FUNCTIONALITY OF MAGAZINES TO REMAIN
DURING PHASE 1 OPERATIONS INCLUDING POWER, SECURITY
FEATURES, GROUNDING GRID, AND INTRUSION DETECTION SYSTEM.
8. TEMPORARY SECURITY FENCE MUST BE INSTALLED PRIOR TO
DEMOLITION OF EXISTING PERIMETER FENCE AND BE FULLY
GROUNDED AND BONDED.
9. CONTRACTOR MUST IMMEDIATELY CEASE BLASTING, EXCAVATION,
DEMOLITION, CONSTRUCTION ACTIVITIES, AND VACATE THE SITE AT
THE REQUEST OF SECURITY FORCES, MUNITIONS STAFF, OR
CONTRACTING OFFICER TO FACILITATE NORMAL OPERATIONS AND
SECURITY DRILLS ON SITE. CONSTRUCTION AND DEMOLITION
ACTIVITIES, INCLUDING SITE ACCESS, WILL ONLY BE ALLOWED TO
RESUME UPON VERBAL APPROVAL OF SECURITY FORCES, MUNITIONS
STAFF, OR THE CONTRACTING OFFICER.
10. THE GOVERNMENT WILL MAINTAIN ACCESS CONTROL TO ACTIVE
MAGAZINES (MAGAZINES NOT SCHEDULED FOR DEMOLITION DURING
PHASE 1). DO NOT BLOCK THE ENTRANCE TO OR OTHERWISE IMPEDE
GOVERNMENT ACCESS TO ACTIVE MAGAZINES. THE CONTRACTOR
WILL NOT HAVE FREE ACCESS TO ACTIVE MAGAZINES FOR THE
DURATION OF CONSTRUCTION.
11. CONTRACTOR EMPLOYEES, INCLUDING SUBCONTRACTORS, MUST
COMPLETE EXPLOSIVE SAFETY TRAINING PRIOR TO SITE ACCESS.
12. EQUIPMENT FUELING WITHIN THE MUNITIONS COMPOUND IS STRICTLY
PROHIBITED, FUELING MUST ONLY OCCUR WITHIN THE CONTRACTOR
LAY DOWN AND STAGING AREA.
13. SUBMIT LIST OF SPARK PRODUCING EQUIPMENT, OR EQUIPMENT
UTILIZING PROPANE GAS, TO THE CONTRACTING OFFICER FOR
APPROVAL PRIOR TO USE ON SITE.
TEMPORARY SEDIMENT TRAP 1
(PHASE 1A) & PERMANENT STORM
WATER FACILITY C (PHASE 1A)
ROCK BLASTING AND
EXCAVATION AREA (PHASE 1A)
EXST-002
(A113)
TEMPORARY SEDIMENT TRAP 2 (PHASE 1B)
& PERMANENT STORM WATER
MANAGEMENT FACILITY B (PHASE 1B)
PHASE 1A
PHASE 1B
DEMOLITION OF
BUILDING 524 (PHASE 1C)
CONTRACTOR
TRAILER LOCATION
EXISTING MAGAZINE
COMPOUND ENTRY GATE
EXISTING
BLDG 393
TEMPORARY SECURITY FENCE
SECURITY FENCE
EXISTING MUNITIONS
COMPOUND ENTRY GATE,
CONTRACTOR ACCESS POINT
FAX: 571.218.1600
1100 NORTH GLEBE ROAD
SUITE 500
ARLINGTON, VIRGINIA 22201
571.218.1000
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1667770
APPROVED BY LCDR ELIZABETH
OLOKODE NAVFAC NLOD FEAD
DIRECTOR NEW LONDON, GROTEN, CT
05/27/2025
TEMPORARY SEDIMENT
TRAP 3 (PHASE 1A)
A94
A95
A96
A97
A100 A109
A101 A108
A102 A107
A103 A106
A104 A105
CONSTRUCTION OF
OPERATIONS BUILDING (PHASE 1A)
PHASE 1A PHASE 1A
NORTH WETLAND
MITIGATION AREA
SOUTH WETLAND
MITIGATION AREA
| Sheets and Views |
| GC101 - CONSTRUCTION PHASING PLAN - PHASE 1 |
| 2026-06-25T11:14:16-0400 | |
| Joshua D Corum | |
| I am approving this document |
| 2026-06-29T13:56:40-0400 | |
| Norfolk, VA | |
| James E. Donahue, R.A. | |
| I, James E. Donahue, R.A., am signing this document to confirm that it has been reviewed. |
2026-06-29T13:57:13-0400
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