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STORMWATER POLLUTION CONTROL PLAN
United Technologies Corporation Pratt & Whitney
Middletown, Connecticut
December 2015
Prepared for
United Technologies Corporation; Pratt & Whitney One Aircraft Road
Middletown, CT 06457
Prepared by
LOUREIRO ENGINEERING ASSOCIATES, INC. 100 Northwest Drive
Plainville, Connecticut 06062
An Employee Owned Company
Comm. No. 88UT245
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Table of Contents
Page
1. INTRODUCTION 1-1
1.1 Site Description/Existing Conditions 1-1
1.2 Proposed Drainage Pattern 1-2
1.3 Modification to the Plan 1-2
2. DESCRIPTION OF ACTIVITIES 2-1
2.1 Nature of the Construction Activity 2-1
2.2 Estimates of Areas to be Disturbed 2-1
2.3 Post Construction Runoff 2-2
2.4 Receiving Waters 2-2
3. CONSTRUCTION SEQUENCING AND CONTROLS 3-1
3.1 Site Disturbance 3-1
3.1.1 Initial Erosion Control Installation 3-2
3.1.2 Clearing and Grubbing 3-3
3.2 Site Restoration 3-3
3.3 Specific Operating Conditions 3-3
3.3.1 Erosion Controls 3-3
3.3.2 Dust Controls 3-3
3.3.3 Anti-Tracking 3-4
3.3.4 Washout Areas 3-4
3.3.5 Waste Disposal 3-4
3.3.6 Secondary Containment 3-4
4. POST CONSTRUCTION STORMWATER MANAGEMENT 4-1
5. INSPECTIONS, MONITORING, MAINTENANCE AND RECORDS 5-1
5.1 Weekly Inspections 5-3
5.2 Post-Rainfall Inspections 5-4
5.3 Post Construction Inspections 5-4
5.4 Monitoring 5-4
5.5 Maintenance 5-5
5.6 Reporting and Record Retention 5-6
5.6.1 Stormwater Monitoring Reports 5-6
6. TERMINATION REQUIREMENTS 6-1
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7. CERTIFICATIONS 7-1
7.1 Document Certification 7-1
7.2 Contractor Certifications 7-1
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FIGURES Figure 1 Site Location Map DRAWINGS Drawing 1 Construction Work Areas SWPCP Drawing 2 Construction Work Areas Drawing 3 Building 410 B410-PRA-1 (SWMU #6) Drawing 4 Building 410 B410-PRA-2 (SWMU #14) Drawing 5 SE & SC Details APPENDICIES Appendix A General Permit for the Discharge of Stormwater and Dewatering
Wastewaters Associated with Construction Activities Appendix B General Permit Registration Form Appendix C Inspection Logs and Summary Report Forms Appendix D Executed Certifications (Field Copy Only) Appendix E Stormwater Monitoring Report Appendix F Notice of Termination
ACRONYMS CFR Code of Federal Regulations DEEP State of Connecticut Department of Energy and Environmental Protection ETPH Extractable Total Petroleum Hydrocarbons GP General Permit PCB Polychlorinated Biphenyls RCRA Resource Conservation and Recovery Act RCSA Regulations of Connecticut State Agencies RSR Remediation Standard Regulation SMR Stormwater Monitoring Report SVOCs Semi-Volatile Organic Compounds SWMU Solid Waste Management Unit SWPCP Stormwater Pollution Control Plan SWPPP Stormwater Pollution Prevention Plan USGS United States Geological Survey VOCs Volatile Organic Compounds
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1. INTRODUCTION
Loureiro Engineering Associates, Inc. (Loureiro) has been retained by United Technologies
Corporation / Pratt & Whitney Division (UTC/Pratt & Whitney) to prepare a Stormwater
Pollution Control Plan (SWPCP) for its facility located at One Aircraft Road Middletown,
Connecticut (hereinafter referred to as “the Site”). This SWPCP has been prepared to provide
information and guidance on the management of stormwater discharges, associated with
construction activities conducted at the Site, in compliance with the Connecticut Department of
Energy and Environmental Protection (DEEP) General Permit for the Discharge of Stormwater
and Dewatering Wastewaters Associated with Construction (GP), reissued August 21, 2013. A
copy of the GP containing various conditions applicable to UTC/Pratt & Whitney is included as
Appendix A. A copy of the facility’s GP Registration Form is provided in Appendix B.
This document has been prepared using sound engineering practices and is consistent with the
2002 Connecticut Guidelines for Soil Erosion and Sediment Control and the 2004 Connecticut
Stormwater Quality Manual. This document will be maintained on-site for the duration of the
construction activity and will be used to minimize pollution caused by soil erosion and
sedimentation during and after construction and stormwater pollution caused by used of the Site
after construction is complete.
Remediation of the Site is required by the Resource Conservation and Recovery Act (RCRA)
Corrective Action Program, Section 22a-449c-105(h) of the Regulations of Connecticut State
Agencies (RCSA). Contamination at the Site includes volatile organic compounds (VOCs),
semi-volatile organic compounds (SVOCs), extractable total petroleum hydrocarbons (ETPH),
polychlorinated biphenyls (PCBs), and metals. Construction activities include excavation of
contaminated soil, off-Site shipment of soil contaminated with PCBs, consolidation of non-PCB
impacted soil beneath a DEEP-approved engineered control at solid waste management unit
(SWMU)-14, restoration of excavation areas to existing conditions, and capping SWMU-14 and
SWMU-6 with DEEP-approved engineered controls.
1.1 Site Description/Existing Conditions
The Site is owned by UTC/ Pratt & Whitney and is approximately 1,100 acres located on
Aircraft Road in Middletown, Connecticut. Approximately half of the Site is developed for
industrial purposes while the remaining portion of the Site is undeveloped. Figure 1 depicts the
topographic contours, major access routes, watercourses, and other relevant features in the
vicinity of the Site. As shown on Figure 1, the Site is located on the western bank of the
Connecticut River in Middletown, Connecticut. A broad bend in the Connecticut River forms
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the northern and eastern boundaries of the Site. There are several major ravines located at the
Site, including Dart Brook which is a small tributary to the Connecticut River. The Dart Brook
channel originates in the central portion of the Site and flows north and then east in a ravine on
the north side of SWMU-14. The Site contains approximately 53 acres of wetlands.
1.2 Proposed Drainage Pattern
The Site drainage areas are depicted on Drawing 1, SWPCP Site Plan. The facility contains eight
drainage areas associated with industrial activity. No changes to these drainage areas are
proposed or anticipated. The drainage pattern on the Site should remain the same once the
remediation project is complete.
Changes in grade will not occur between existing and proposed conditions in remedial
excavation areas. Changes in grade are proposed for SWMU-6 and SWMU-14 which are
associated with capping of the landfills. Although local drainage in the immediate vicinity of the
SWMU’s will change, drainage from both SWMU-6 and SWMU-14 will continue to discharge
to Dart Brook in Drainage Area 7.
1.3 Modification to the Plan
It is anticipated that the SWPCP may be modified to address future construction activities
outside the scope described in Section 1.1 above. In addition, the SWPCP shall be revised as
soon as practicable when:
• There is a change in a contractor or sub-contractor;
• There is a change in design, construction, operation, or maintenance at the Site which has
potential to discharge pollution to the waters of the state and which has not otherwise
been addressed in the plan; or
• If during any inspection, measures identified in the Plan to prevent pollution fail to
operate properly.
The commissioner may notify the permittee at any time that the Plan and/or the Site do not meet
one or more of the minimum requirements of this general permit. Within 7 days of such notice,
or such other time as the commissioner may allow, the permittee shall make the required changes
to the Plan and perform all actions required by such revised Plan. Within 15 days of such notice,
or such other time as the commissioner may allow, the permittee shall submit to the
commissioner a written certification that the requested changes have been made and
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implemented and such other information as the commissioner requires. Such information shall
be filed in accordance with the certification requirements prescribed in Section 7 of this SWPCP.
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2. DESCRIPTION OF ACTIVITIES
This section presents a description of the activities proposed at the Site. The proposed Site
conditions are depicted on Drawing 2.
2.1 Nature of the Construction Activity
The following activities will be performed during the proposed construction of the Site:
• Clearing and grubbing of the excavation areas and solid waste management units
• Creation of the contractor staging areas.
• Installation of soil erosion and sediment controls which will be maintained until construction
at each remediation area location is complete (see Section 3.1.1).
• Excavation of impacted soils to a depth of approximately two to ten feet.
• Off-Site shipment of PCB-impacted soil.
• Consolidation of non-PCB soil within an engineered control (SWMU-14).
• Placement of clean fill to restore excavation areas to existing grade as soon as confirmatory
sampling is complete.
• Restoration of excavation areas to pre-excavation conditions.
• Installation of engineered control and capping of SWMU-14 and SWMU-6.
• Restoration of areas affected by construction
2.2 Estimates of Areas to be Disturbed
Based on initial estimates, construction activities will result in disturbance of approximately 8.29
acres. However, this value may change slightly due to field conditions and/or confirmatory
sampling results.
Release Area Area (ft2)
B150-PRA-25 120
B220-PRA-40 18,750
B330-PRA-10 240
B330-PRA-19 512
B330-PRA-20 240
B330-PRA-27 6,160
B330-PRA-41A 2,147
B330-PRA-41B 4,115
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B330-PRA-42A 400
B330-PRA-42B 400
B330-PRA-42C 400
B330-PRA-47 15,411
B330-PRA-6 300
B330-PRA-8 2,700
B330-PRA-9 1,400
B440-PRA-21 400
B440-PRA-28 3,000
B440-PRA-29 5,975
B440-PRA-30 650
B450-PRA-7A 530
B450-PRA-8A 5,800
B450-PRA-8B 1,200
B450-PRA-9B 400
ECM-PRA-6 1,173
UND-PRA-1 1,100
SWMU-14 151,153
SWMU-6 136,778
2.3 Post Construction Runoff
The proposed excavations will be returned to current grade; no change in the drainage areas is
anticipated.
Although grading will change in the immediate vicinity of SWMU-6 and SWMU-14, both solid
waste management units will continue to discharge to Dart Brook within Drainage Area 007.
Runoff coefficients for each drainage area are provided on Drawing 1.
2.4 Receiving Waters
Under existing conditions, stormwater runoff generated at the Site generally flows into Dart
Brook, an unnamed tributary to the Connecticut River, and the Connecticut River as shown on
Drawing 1. There are no anticipated changes to drainage areas.
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3. CONSTRUCTION SEQUENCING AND CONTROLS
Soil will be excavated from numerous locations on the Site as depicted on Drawing 2. Excavated
soil will be placed in SWMU-14 for consolidation. The construction schedule and sequencing of
specific construction activities will be determined by the contractor responsible for implementing
the requirements of the general permit. The exact sequencing of construction activities will be
dependent on Pratt & Whitney facility operations. Confirmatory sampling will be conducted at
each excavation area to confirm that contaminated soil exceeding RSR criteria was removed at
each location. Clean fill will be used to restore excavated areas back to their initial grade. The
SWMU’s on the Site will be capped and graded in accordance with engineering specifications.
The sequence of excavations will be determined by the contractors.
Loureiro will be the construction manager on the Site and will oversee construction operation.
UTC/Pratt & Whitney will provide contractors with copies of permits, plans and approvals with
conditions containing limitations on how work is to be performed. AECOM will be the
contractor for the Site. It will be the responsibility of the contractor to independently review
each permit, plan and/or approval and address the conditions for performing the work. It will be
the responsibility of the contractor to provide continuous supervision of their respective work
and to ensure the supervision is well versed in the conditions of each permit, plan and/or
approval. It will be the responsibility of the contractor to comply with the conditions of each
permit, plan or approval as it relates to their work. It will be the responsibility of the owner, as
the registrant, to provide adequate resources to periodically visit the Site to verify conformance
with conditions as well as to periodically audit the records of the contractor to ensure adequacy.
During construction activities, discharge shall not cause pollution due to acute or chronic toxicity
to aquatic and marine life, impair the biological integrity of aquatic or marine ecosystems, or
result in an unacceptable risk to human health. The stormwater discharge shall also not cause or
contribute to an exceedance of the applicable Water Quality Standards in the receiving water.
3.1 Site Disturbance
This section presents a summary description of the planned activities that will result in
disturbance of the Site. While it is the responsibility of each contractor performing duties related
to stormwater, and soil erosion and sediment control as part of the Site remediation project to
comply with the terms and conditions of the General Permit for the Discharge of Stormwater
and Dewatering Wastewaters from Construction Activities, each contractor should take particular
notice of provisions related to stabilization of disturbed surfaces. Specifically:
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• Perimeter controls around remediation areas will be actively maintained until final
stabilization of the areas have been established;
• Excavations areas will be filled as soon as practicable after satisfactory confirmatory samples
have been obtained.
• Stabilization measures shall be implemented as soon as possible in accordance with the
current State of Connecticut Soil Erosion and Sediment Control Guidelines.
• Where construction activities have permanently ceased or when final grades are reached in
any portion of the Site, stabilization practices shall be implemented within seven days;
• Areas that will remain disturbed but inactive for at least thirty days shall receive temporary
seeding within seven days in accordance with the current State of Connecticut Soil Erosion
and Sediment Control Guidelines; and
• Areas that will remain disturbed beyond the planting season, shall receive long-term, non-
vegetative stabilization sufficient to protect the Site through the winter.
3.1.1 Initial Erosion Control Installation
The initial activities to be performed at the Site include the establishment of Contractor Staging
Areas and the installation of erosion controls around the perimeter of SWMU-14.
The construction activities will be initiated by the creation of the Contractor Staging Areas. The
Contractor Staging Areas will be constructed above the 500-year flood elevation. The location of
soil erosion and sediment control measures are illustrated on Drawings 3 and 4. Although the
exact locations have not been shown for the excavations they will consist of a combination of silt
fences and staked hay bales and will be installed and maintained in accordance with the
provisions of this Plan and other approvals of the Town of Middletown.
Erosion controls around individual remediation areas and disturbed areas outside remediation
areas will be installed prior to work being conducted in that specific area. Catch basins that are
located down gradient of remediation areas will have inlet sediment control devices (silt sack),
be covered with mats or surrounded by silt fence and hay bales to prevent sediment from
entering the catch basin.
The existing roadways will be used as transport roads during the transport of soil from the
remediation excavation areas to SWMU-14. The existing roadways will remain open and
available to Pratt & Whitney staff. The construction equipment will be decontaminated prior to
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movement over roads to prevent sediment accumulation on roadways. Vehicles leaving the work
area shall be inspected by the Contractor to check that no soil adheres to its wheels or
undercarriage. Such material shall be removed at the work area or decontaminated pad before
the truck is allowed to leave the Site. The detail for the construction of the decontamination pad
is depicted on Drawing 5.
3.1.2 Clearing and Grubbing
Excavation areas that are unpaved, including SWMU-14, and SWMU-6, will be cleared and
grubbed prior to construction activities. Plantings from the excavation areas may be removed as
living plants and stored within the staging area for reuse, if practical.
3.2 Site Restoration
As remediation of the Site progresses, temporary and final restoration activities will occur.
Excavation areas will be returned to initial pre-remediation conditions. Areas that were
previously vegetated will be re-vegetated and areas that were previously paved will be repaved.
The landfill locations, SWMU-6 and SWMU-14, will be capped and graded in accordance with
the DEEP-approved engineering specifications. Soil erosion and sediment controls will be
maintained as described above and will not be removed until such a time as disturbed areas are
paved or a suitable vegetative cover has been established.
3.3 Specific Operating Conditions
The contractor shall ensure that grading and related earthwork activities are conducted in
accordance with the following specific operating conditions.
3.3.1 Erosion Controls
The contractor shall install erosion controls as depicted on the drawings. Additional erosion
controls may be required based upon the stage of construction and the conditions of surface
stabilization. The contractor shall install additional erosion controls as needed to mitigate soil
erosion and to control sedimentation. Run-on/run-off controls shall be consistent with the 2002
Connecticut Guidelines for Soil Erosion and Sediment Control. Details of the soil erosion and
sediment control measures to be installed are depicted on Drawing 5.
3.3.2 Dust Controls
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The contractor shall minimize wind erosion and dust transport by ensuring that necessary dust
controls (watering, salts, mulch woodchips, etc.) are implemented and maintained during periods
of construction and operation.
3.3.3 Anti-Tracking
The contractor shall employ anti-tracking measures such as anti-tracking pads as depicted on the
drawings and as needed. The anti-tracking pads shall be constructed in a manner that is
consistent with the 2002 Connecticut Guidelines for Soil Erosion and Sediment Control.
3.3.4 Washout Areas
Washout of applicators, containers, vehicles and equipment shall be conducted in a designated
washout area. There shall be no surface discharge of washout wastewaters from this area. Such
washout shall be conducted outside of any buffers and at least 50 feet from any stream, wetland
or other sensitive resource; or in an entirely self-contained washout system. The permittee shall
clearly flag off and designate areas to be used for washing and conduct such activities only in
these areas. The permittee shall direct all wash water into a container or pit designed such that no
overflows can occur during rainfall or after snowmelt.
In addition, dumping of liquid waste in storm sewers is prohibited. At least once per week, the
permittee must inspect any containers or pits used for washout to ensure structural integrity,
adequate holding capacity, and to check for leaks or overflows. If there are signs of leaks, holes
or overflows in the containers or pits that could lead to a discharge, the permittee shall repair
them prior to further use. For concrete washout areas, the permittee shall remove hardened
concrete waste whenever the hardened concrete has accumulated to a height of ½ of the
container or pit or as necessary to avoid overflows.
3.3.5 Waste Disposal
Good housekeeping practices shall be implemented to minimize the discharge of litter, debris,
building materials, hardened concrete waste, or similar materials to waters of the State. The
contractor will be responsible for ensuring the areas are maintained properly.
3.3.6 Secondary Containment
All chemical and petroleum product containers stored on the Site (excluding those contained
within vehicles and equipment) shall be provided with impermeable containment which will hold
at least 110% of the volume of the largest container, or 10% of the total volume of all containers
in the area, whichever is larger, without overflow from the containment area. All chemicals and
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their containers shall be stored under a roofed area except for those chemicals stored in
containers of 100 gallon capacity or more, in which case a roof is not required. Double-walled
tanks satisfy this requirement.
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4. POST CONSTRUCTION STORMWATER MANAGEMENT
Post-construction stormwater management will be performed in a manner consistent with the
requirements of the General Permit for the Discharge of Stormwater Associated with Industrial
Activity. Pratt & Whitney Middletown is registered and maintains a Stormwater Pollution
Prevention Plan (SWPPP) consistent with the requirements of the general permit.
The proposed excavations will be returned to current grade; no change in the drainage areas is
anticipated. Although grading will change within the footprint of SWMU-6 and SWMU-14,
both solid waste management units will continue to discharge to Dart Brook within Drainage
Area 007. There is not anticipated increase in runoff velocity or sediment or floatable loading to
receiving watercourses. Therefore, velocity dissipation devices or sediment and floatable
removal controls are not warranted.
If velocity dissipation devices or sediment and floatable removal controls are deemed necessary
during or after construction, calculations supporting these designs will be added to the Plan and
the Plan will be updated accordingly.
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5. INSPECTIONS, MONITORING, MAINTENANCE AND RECORDS
This section details the minimum soil erosion and sediment control inspections to be performed
during and following construction. The Site contractor will be responsible for maintenance and
integrity of soil erosion and sediment controls during the entire duration of the construction
activities. The contractor shall also be responsible for completing the inspections noted below.
The following is a description of the inspection procedures to be followed at the Site. These
requirements must be met for inspections.
• Inspections by a Professional Engineer will be implemented in accordance with the General
Permit for the Discharge of Stormwater and Dewatering Wastewaters Associated with
Construction. Within the first 30 days following commencement of the construction activity
on the site, the permittee shall contact a Professional Engineer to inspect the Site. The Site
shall be inspected at least once and no more than three times during the first 90 days to
confirm compliance with the general permit and proper initial implementation of all controls
measures designated in the SWPCP for the Site for the initial phase of construction.
• The permittee shall maintain a rain gauge on-site to document rainfall amounts. Qualified
personnel shall inspect disturbed areas of the construction activity that have not been finally
stabilized; all erosion and sedimentation control measures; all structural control measures;
soil stockpile areas; washout areas and locations where vehicles enter or exit the Site at least
once every seven calendar days or within 24 hours of the end of a storm that generates a
discharge. See Section 5.4 for details on post-rainfall inspection instructions. Where areas
have been temporarily or finally stabilized, such inspection shall be conducted at least once
every month for three months.
• On a weekly basis, disturbed areas and areas used for storage of materials that are exposed to
precipitation shall be inspected for evidence of, or the potential for, soil erosion and
sedimentation. Erosion and sediment control measures shall be observed to ensure that they
are operating correctly. Where discharge locations or points are assessable, they shall be
inspected to ascertain whether erosion control measures are effective in preventing
significant impacts to receiving waters. Locations where vehicles enter or exit the Site shall
be inspected for evidence of off- Site sediment tracking.
• After each inspection, a Weekly Inspection Log will be filled out and shall summarize: the
scope of the inspection; name(s) and qualifications of personnel making the inspection; the
date(s) of the inspection; weather conditions including precipitation information; major
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observations relating to erosion and sediment controls and the implementation of this
SWPCP; a description of the stormwater discharge(s) from the Site; and any water quality
monitoring performed during the inspection. The report shall be signed by the permittee or
his/her authorized representative in accordance with the Section 7 of this SWPCP. The form
shall be retained as part of this Plan. The Weekly Inspection Log is attached as Appendix C.
• Based on the results of the inspection, the description of potential sources and pollution
prevention measures identified in this Plan shall be revised as appropriate as soon as
practicable after such inspection. Non-engineered corrective actions shall be implemented on
Site within 24 hours and incorporated into a revised Plan within three (3) calendar days of the
date of inspection. Engineered corrective actions shall be implemented on Site within seven
(7) days and incorporated into a revised Plan within ten (10) days of the date of inspection.
This Plan shall be revised and the Site controls updated in accordance with sound
engineering practices, the Guidelines, and Section 5(b)(4) of the general permit. During the
period in which any corrective actions are being developed and have not yet been fully
implemented, interim measures shall be implemented to minimize the potential for the
discharge of pollutants from the Site.
• A report summarizing the scope of the inspection, name(s) and qualifications of personnel
making the inspection, the date(s) of the inspection, major observations relating to the
implementation of this plan, and actions taken shall be made and retained as part of the
SWPCP for at least five years after the date of inspection. The report shall be signed by the
permittee or his/her authorized representative in accordance with the requirements of Section
7 of this SWPCP.
• This Plan shall be amended whenever there is a change in contractors or subcontractors at the
Site, or a change in design, construction, operation, or maintenance at the Site which has the
potential for the discharge of pollutants to the waters of the state and which has not otherwise
been addressed in this Plan.
• This Plan shall also be modified if the actions required by the Plan fail to prevent pollution.
• Inspectors from the DEEP and the Town of Middletown may inspect the Site for compliance
with this general permit at any time construction activities are ongoing and upon completion
of construction activities to verify the final stabilization of the Site and/or the installation of
post-construction stormwater management measures pursuant to Section 6(a) of the general
permit.
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5.1 Weekly Inspections
Qualified personnel shall conduct weekly inspections. In general, these inspections shall be
completed until final stabilization has been achieved and shall address disturbed areas that have
not been stabilized, structural control measurers, vehicle exit and entrance areas, and material
storage areas.
Items to be inspected include (at a minimum):
1. Walk open excavation areas and soil stockpile areas on the Site to determine if there are any
disturbed areas not protected by soil erosion or sediment control measures.
2. Check open excavation areas and soil stockpile areas on the Site for wastes resulting from
equipment maintenance, personnel, and construction activities – these wastes will not be
discarded on the Site.
3. Soil erosion and sediment controls located throughout the Site at open excavation areas and
soil stockpile areas, including hay bales, and silt fencing.
4. Accumulated silt and sediment will be removed from silt fences and hay bales when silt
exceeds 1/3 the height of the control.
5. Disturbed soil areas – check for erosion rills; check protective dams and silt barriers.
6. Restored landscaped areas, mulch, mats, checks and siltation barriers – check measures
necessary to enhance growth of stabilizing vegetation; check mulch; check barriers.
7. Observe the entrance and exit point from the construction areas. Check for signs of excessive
off-Site sediment and/or soil tracking.
8. The contractor parking and staging areas shall be maintained.
9. Anti-tracking pads shall be replaced when void spaces are full or structures are breeched, as
applicable.
10. Supplies - a minimum of 100 feet of silt fence shall be stored at the Site for emergency use.
11. Dust Suppression – a means of dust suppression (water or calcium chloride) must be
maintained on-site.
12. Any containers or pits used for washout for structural integrity, adequate holding capacity
and signs of leaks or overflows.
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5.2 Post-Rainfall Inspections
In addition to those inspections listed above, qualified personnel shall perform an inspection of
areas identified for weekly inspection within 24 hours of the end of a storm that generates a
discharge. For storms that end on a weekend, holiday or other time after which normal working
hours will not commence within 24 hours, an inspection is required within 24 hours only for
storms that equal or exceed 0.5 inches. For storms of less than 0.5 inches, an inspection shall
occur immediately upon the start of the subsequent normal working hours.
These inspections need only be conducted until the area has been temporarily or finally
stabilized, such inspection shall then be conducted at least once every month for three months.
5.3 Post Construction Inspections
Qualified personnel shall perform post-construction inspections based on the above criteria until
stabilization of the entire Site is documented. Post construction inspections shall, at a minimum,
be conducted at least monthly for a three-month period after temporary or final stabilization has
been achieved.
5.4 Monitoring
Stormwater discharge samples will be collected for turbidity analysis in accordance with 40
Code of Federal Regulations (CFR) Part 136 at least once every month when there is a discharge
of stormwater from the Site during construction, and until final stabilization of the drainage area
associated with each discharge point is achieved. Stormwater samples will be collected from
sampling points SW002, SW004, and SW007 shown on Drawing 1. All sampling locations will
be clearly marked with a flag, stake and/or other visible marker. Sampling points SW002 and
SW004 are representative sample location for the Site since the planned remediation work
conducted in areas outside the areas of these sampling points is similar in nature. Sampling point
SW007 will be used to monitor stormwater discharge in the area of SWMU-6 and SWMU-14
since the planned remediation work in the two areas differ from the work in other locations.
Samples are only required to be collected during normal working hours (Monday through Friday,
between the hours of 6:00 am and 6:00 pm). Sampling may be temporarily suspended any time
conditions exist that may reasonably pose a threat to the safety of the person taking the sample.
If sampling is discontinued due to the end of normal working hours, the permittee shall resume
sampling the following morning or the morning of the next working day following a weekend or
holiday, as long as the discharge continues. If there is no discharge, no sample shall be
collected.
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All samples shall be collected from discharges resulting from a storm event that occurs at least
24 hours after any previous storm event generating a stormwater discharge. Any sample
containing snow or ice melt must be identified on the Stormwater Monitoring Report (SMR)
form attached as Appendix E. Sampling of snow or ice melt in the absence of a storm event is
not a valid sample. Samples shall be grab samples taken at least three separate times during a
storm event and shall be representative of the flow and characteristics of the discharge. The first
sample shall be taken manually within the first hour of stormwater discharge from the Site. If the
discharge begins outside of normal working hours, the first sample shall be collected at the start
of normal working hours. If there is no discharge, no sample shall be collected.
The stormwater discharge turbidity value for each sampling point shall be determined by taking
the average of the turbidity values of all samples taken at that sampling point during a given
storm. If the defined sampling point or points do not manifest into a discharge, sampling cannot
be performed and the field conditions shall be recorded indicating such condition. Monitoring
results and observations for each outfall shall be recorded on the SMR form provided as
Appendix E.
5.5 Maintenance
Maintenance will be necessary throughout the construction project to mitigate potential soil
erosion and sedimentation. Maintenance activities shall be performed on aspects of the work as
needed to maintain the soil erosion and sedimentation controls as defined herein and as added
throughout the project due to needs as they arise. Maintenance will entail replacing or repairing
the controls designated in this Plan to their original function. Maintenance may also include the
installation of additional erosion control measures as needed to adequately mitigate potentially
erosion or sedimentation.
At a minimum, the following controls will require regular maintenance:
• Slopes - Slope erosion control blankets and vegetation shall be inspected twice a year and
after significant rainfall events. Additional maintenance, beyond schedule maintenance,
may be required based upon inspections. Any rills or channeling shall be repaired
immediately. Sediment deposits, trash and debris shall be removed to a location off-site
and disposed of in an environmentally acceptable manner.
• Anti-tracking controls including the cobble pad and paved roadway providing Site access.
• Silt fencing and hay bales located throughout the Site. Replacement may be required if
hay bales become loose or silt fence torn.
• Landscaped areas, mulch, checks and siltation barriers throughout the Site. It is
anticipated that the majority of the Site proper will be finished with woodchips, mulch or
5-6
other Site manufactured stabilization product. Other areas will be seeded and stabilized
via vegetation.
5.6 Reporting and Record Retention
Upon the completion of a weekly, post rainfall, or post construction inspection, a brief report
shall be prepared detailing the scope of the inspection, the name of the inspector(s), the date of
the inspection, observations effecting the SWPCP, and corrective actions required to ensure
proper operation of erosion and pollution control measures. Qualified personnel must sign this
report. Copies of these reports must be retained for a period five years from the date of
construction completion.
Copies of blank inspection report forms identified above are included in Appendix C. The
completed records of inspection must be maintained as part of the Plan for a period of at least
five years.
Upon learning of a violation of a condition of this general permit, a contractor shall immediately
take reasonable action to determine the cause of such violation, correct and mitigate the results of
such violation, prevent further such violation, and report in writing such violation and such
corrective action to the commissioner within five days of the contractor’s learning of such
violation. Such information shall be filed in accordance with the certification requirements
prescribed in Section 7 of this SWPCP.
If the permittee becomes aware of a change in any information in any material submitted
pursuant to this general permit, or becomes aware that any such information is inaccurate or
misleading or that any relevant information has been omitted, permittee shall correct the
inaccurate or misleading information or supply the omitted information in writing to the
commissioner within fifteen (15) days. Such information shall be filed in accordance with the
certification requirements prescribed in Section 7 of this SWPCP.
The Site contractor shall retain an updated copy of this Plan at the Site from the date construction
is initiated at the Site until the date construction at the Site is completed.
Upon completion of construction for areas authorized by the General Permit for the Discharge of
Stormwater Associated with Industrial Activity, this Plan shall be kept as an appendix to the
SWPPP for a period of at least three years from the date of completion of construction.
5.6.1 Stormwater Monitoring Reports
5-7
Within thirty (30) days following the end of each month, permittees shall enter the stormwater
sampling result(s) submit the SMR form in accordance with the general permit.
If there was no discharge during any given monitoring period, the permittee shall submit the
form as required with the words “no discharge” entered in place of the monitoring results. If the
permittee monitors any discharge more frequently than required by this general permit, the
results of this monitoring shall be included in additional SMRs for the month in which the
samples were collected. If sampling protocols are modified due to the limitations of normal
working hours or unsafe conditions, a description of and reason for the modifications shall be
included with the SMR. If the permittee samples a discharge that is representative of two or more
substantially identical discharge points, the permittee shall include the names or locations of the
other discharge points.
6-1
6. TERMINATION REQUIREMENTS
At the completion of the construction project, a Notice of Termination must be filed with the
commissioner. A copy of the Notice of Termination is attached as Appendix F. The project shall
be considered complete after all post-construction measures are installed, cleaned and
functioning and the Site has been stabilized for at least three months following the cessation of
construction activities. The Site will be considered stabilized when there is no active erosion or
sedimentation present and no disturbed areas remain exposed for all phases.
Once the Site has been stabilized for at least three months, the registrant shall have the Site
inspected by a qualified inspector to confirm final stabilization. The registrant shall indicate
compliance with this requirement on the Notice of Termination form.
7-1
7. CERTIFICATIONS
This section describes the necessary certifications for this Plan.
7.1 Document Certification
Any document, including but not limited to any notice, information or report, which is submitted
to the commissioner under this general permit shall be signed by the permittee, or a duly
authorized representative of the permittee, and by the individual or individuals responsible for
actually preparing such document, each of whom shall certify in writing as follows:
“I have personally examined and am familiar with the information submitted in this document
and all attachments thereto, and I certify that, based on reasonable investigation, including my
inquiry of those individuals responsible for obtaining the information, the submitted information
is true, accurate and complete to the best of my knowledge and belief. I understand that a false
statement made in this document or its attachments may be punishable as a criminal offense, in
accordance with Section 22a-6 of the Connecticut General Statutes, pursuant to Section 53a-
157b of the Connecticut General Statutes, and in accordance with any other applicable statute.”
7.2 Contractor Certifications
Loureiro is the Contract Manager and will oversee the subcontractors to be chosen. Each
individual employee of any contractor performing duties related to stormwater, and soil erosion
and sediment control as part of the Site remediation project must sign the following certification.
"I certify under penalty of the law that I have read and understand the terms and conditions of
the General Permit for the Discharge of Stormwater Associated with Construction Activities. I
understand that as a contractor or subcontractor at the site, I am covered by this general permit,
and must comply with the terms and conditions of this general permit, including but not limited
to the requirements of the Stormwater Pollution Control Plan prepared for the site."
The certification shall include the name and title of the person providing the signature; the name,
address and telephone number of the contracting firm; the name and address for the Site; and the
date the certification is made. A blank certification statement to be signed by each individual
employee of any contractor performing duties related to stormwater, and soil erosion and
sediment control as part of the Site remediation project is included as Appendix D to this
SWPCP.
FIGURES
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GENERAL PERMIT REGISTRATION FORM FOR THE DISCHARGE OF STORMWATER
PRATT & WHITNEY, MIDDLETOWN, CONNECTICUTAND DEWATERING WASTEWATERS FROM CONSTRUCTION ACTIVITIES
ATTACHMENT A
FIGURE 1
DRAWINGS
B150-PRA-25:
ELECTRICAL SUBSTATION
ECM-PRA-6:
FORMER SAND
AND GRAVEL PITS
B440-PRA-30:
FORMER TEST CELL BLAST DOOR
BUILDING 10
BUILDING 110
BUILDING 150
WASTE TREATMENTBUILDING 330
BUILDING 220
BUILDING 450
BUILDING 440
ECMLANDFILL
UNDEVELOPED
BUILDING 410
BUILDING 330FORMER
BULK FUELFARM
B450-PRA-7A:
FORMER OUTDOOR STORAGE AREA EAST
B450-PRA-8A:
ABOVE GROUND STEAM LINES
B330-PRA-41A:
WATER TANK #283
B330-PRA-20:
FORMER 20,000 GAL. JET FUEL UST AREA
B330-PRA-41B:
WATER TANK #320
B330-PRA-10:
FORMER TRANSFORMER
WEST OF BUILDING 340
B330-PRA-47:
POLLUTED FILL
WEST OF BUILDINGS
290 & 295
B330-PRA-27:
BUILDING 330
EXHAUST STACKS
B330-PRA-6:
FORMER BUILDING 310
TRANSFORMER
B330-PRA-19:
FORMER BUILDING 310
BULK FUEL STORAGE AREA
UND-PRA-1
B330-PRA-42A:
ABOVE-GROUND STEAM LINES
B440-PRA-21:
EXTERIOR AREA
B220-PRA-40:
FORMER RADIATOR LABORATORY
(BUILDING 270)
B330-PRA-8 AND 9:
FORMER STORAGE TANKS/
CATCH BASINS WITH
CONTAINMENT BERMS
B410-PRA-1:
SWMU #6
B440-PRA-29:
BUILDING EXTERIOR PERIMETER
B410-PRA-2:
SWMU #14
B410-PRA-13:
FILL AREA
B330-PRA-42B:
ABOVE-GROUND STEAM LINES
B330-PRA-42C:
ABOVE-GROUND STEAM LINES
B450-PRA-8B:
ABOVE GROUND STEAM LINES
B450-PRA-9B:
FILL AREA EAST OF BUILDING 450
B440-PRA-28:
STEAM LINES
SAMPLE
POINT
SW005
SAMPLE
POINT
SW006
SAMPLE
POINT
SW007
SAMPLE
POINT
SW008
SAMPLE
POINT
SW002
SAMPLE
POINT
SW003
SAMPLE
POINT
SW004
SAMPLE
POINT
SW001
B440-PRA-28:
STEAM LINES
BUILDING 96
P&W Proprietary - “These documents are the property of United Technologies Corporation (UTC). You may not possess, use,copy or disclose these documents or any information in them, for any purpose, including without limitation to design,manufacture, or repair parts, or obtain FAA or other government approval to do so, without UTC's express written permission.Neither receipt nor possession of these documents alone, from any source, constitutes such permission. Possession, use,copying or disclosure by anyone without UTC's express written permission is not authorized and may result in criminal and/orcivil liability.” This document contains no technical data subject to the EAR or the ITAR.
LEGEND
WETLAND
WATERBODY/MARSH AREA
EXCAVATION AREA REMEDIATIONPROPERTY LINE (APPROX.)
DRAWING
DR
AW
N B
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AP
PR
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BY
CO
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. N
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SHEETNO.
NO. OFSHEETS
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PR
.
LoureiroEngineering · Construction · EH&S · Energy · Waste
Loureiro Engineering Associates, Inc.
100 N
orthw
est D
rive · Plainville, Connecticut 06062
Phone: 860-747-6181 · Fax: 860-747-8822
An Em
ployee O
wned Com
pany · w
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.Loureiro.com
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EH
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Waste
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SOLID WASTE MANAGEMENT UNITS TO BE CAPPED
DRAINAGE DIVIDE
B150-PRA-25:
ELECTRICAL SUBSTATION
ECM-PRA-6:
FORMER SAND
AND GRAVEL PITS
B440-PRA-30:
FORMER TEST CELL BLAST DOOR
BUILDING 10
BUILDING 110
BUILDING 150
WASTE TREATMENTBUILDING 330
BUILDING 220
BUILDING 450
BUILDING 440
ECMLANDFILL
UNDEVELOPED
BUILDING 410
BUILDING 330FORMER
BULK FUELFARM
B450-PRA-7A:
FORMER OUTDOOR STORAGE AREA EAST
B450-PRA-8A:
ABOVE GROUND STEAM LINES
B330-PRA-41A:
WATER TANK #283
B330-PRA-20:
FORMER 20,000 GAL. JET FUEL UST AREA
B330-PRA-41B:
WATER TANK #320
B330-PRA-10:
FORMER TRANSFORMER
WEST OF BUILDING 340
B330-PRA-47:
POLLUTED FILL
WEST OF BUILDINGS
290 & 295
B330-PRA-27:
BUILDING 330
EXHAUST STACKS
B330-PRA-6:
FORMER BUILDING 310
TRANSFORMER
B330-PRA-19:
FORMER BUILDING 310
BULK FUEL STORAGE AREA
UND-PRA-1
B330-PRA-42A:
ABOVE-GROUND STEAM LINES
B440-PRA-21:
EXTERIOR AREA
B220-PRA-40:
FORMER RADIATOR LABORATORY
(BUILDING 270)
B330-PRA-8 AND 9:
FORMER STORAGE TANKS/
CATCH BASINS WITH
CONTAINMENT BERMS
B410-PRA-1:
SWMU #6
B440-PRA-29:
BUILDING EXTERIOR PERIMETER
B410-PRA-2:
SWMU #14
B410-PRA-13:
FILL AREA
B330-PRA-42B:
ABOVE-GROUND STEAM LINES
B330-PRA-42C:
ABOVE-GROUND STEAM LINES
B450-PRA-8B:
ABOVE GROUND STEAM LINES
B450-PRA-9B:
FILL AREA EAST OF BUILDING 450
B440-PRA-28:
STEAM LINES
B440-PRA-28:
STEAM LINES
LEGEND
P&W Proprietary - “These documents are the property of United Technologies Corporation (UTC). You may not possess, use,copy or disclose these documents or any information in them, for any purpose, including without limitation to design,manufacture, or repair parts, or obtain FAA or other government approval to do so, without UTC's express written permission.Neither receipt nor possession of these documents alone, from any source, constitutes such permission. Possession, use,copying or disclosure by anyone without UTC's express written permission is not authorized and may result in criminal and/orcivil liability.” This document contains no technical data subject to the EAR or the ITAR.
PROPERTY LINE (APPROX.)
DRAWING
DR
AW
N B
Y
AP
PR
OV
ED
BY
CO
MM
. N
O.
DA
TE
DA
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DE
SC
RIP
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N O
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ISIO
NR
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SHEETNO.
NO. OFSHEETS
SC
AL
E
DA
TE
AP
PR
.
LoureiroEngineering · Construction · EH&S · Energy · Waste
Loureiro Engineering Associates, Inc.
100 N
orthw
est D
rive · Plainville, Connecticut 06062
Phone: 860-747-6181 · Fax: 860-747-8822
An Em
ployee O
wned Com
pany · w
ww
.Loureiro.com
Lou
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oEngineering ·
Construction ·
EH
&S ·
Energy ·
Waste
©L
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En
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WETLAND
WATERBODY/MARSH AREA
EXCAVATION AREA REMEDIATION
SOLID WASTE MANAGEMENT UNITS TO BE CAPPED
B410-PRA-1:
SWMU #6
115.0 x
SWALE AND 4" ∅ PERFORATED
UNDERDRAIN WITH FILTER FABRIC
@ 1.0%±
4" ∅ PERFORATED
UNDERDRAIN WITH
FILTER FABRIC TYP.
@ 1.0%±
5' x 30' x 1' THICK
MODIFIED RIPRAP
LEVEL SPREADER
(END OF SWALE)
20' x 40' x 1' THICK
MODIFIED RIPRAP
APRON (END OF SWALE)
4" ∅ PERFORATED
UNDERDRAIN WITH
FILTER FABRIC
@ 1.0%
5
2
GEOWEB SLOPE COVER
118
120
1
3
0
1
3
2
134
130
128
126
124
122
120
118
116
1
3
6
1
3
6
1
3
4
1
3
4
1
3
2
130
128
126
124
1
2
21
2
0
1
1
6
1
1
4
1
1
2
1
1
0
1
0
8
1
0
6
1
0
4
1
0
2
1
0
0
98
M
A
X
.
4
H
:
1
V
98
1
0
0
1
0
2
1
0
4
1
0
6
1
0
8
1
1
0
1
1
2
1
1
4
116
115.5 x
115.5 x
115
1
1
8
120
130
1
2
2
1
2
4
1
2
6
1
3
6
1
3
4
1
3
2
1
3
0
1
2
8
M
A
X
.
3
H
:
1
V
1
3
4
1
3
8
130
132
134
1
3
2
1
1
4
1
1
6
1
1
0
1
0
0
1
1
2
1
0
2
1
0
4
1
0
6
1
0
8
9
8
1
4
0
5
0
4
8
5
8
5
6
5
4
4
2
4
4
4
6
3
6
3
8
4
0
B410-PRA-13
FILL AREA
(SEE DWG. C-17)
CLEAR AND GRUB AREA
AS REQUIRED FOR NEW WORK
CLEAR AND
GRUB AREA
AS REQUIRED
FOR EXCAVATION
DRAWING
DR
AW
N B
Y
AP
PR
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ED
BY
CO
MM
. N
O.
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.
LoureiroEngineering · Construction · EH&S · Energy · Waste
Loureiro Engineering Associates, Inc.
100 N
orthw
est D
rive · Plainville, Connecticut 06062
Phone: 860-747-6181 · Fax: 860-747-8822
An Em
ployee O
wned Com
pany · w
ww
.Loureiro.com
Lou
reir
oEngineering ·
Construction ·
EH
&S ·
Energy ·
Waste
©L
ou
reiro
En
gin
ee
rin
g A
sso
cia
tes,
In
c.
All
rig
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re
serv
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20
15
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UT
24
5
3 5
1"
= 3
0'
SITE
LEGEND
CHAIN LINK FENCE
TREELINE
RAILROAD
PROPERTY BOUNDARY
TOPOGRAPHIC CONTOURS (2' INTERVAL)
BUILDING/STRUCTURE
ROAD
WATERBODY/MARSH AREA
POTENTIAL RELEASE AREAPRA
ACRONYMS
SOIL EROSION & SEDIMENT CONTROLSSE&SC
SOLID WASTE MANAGEMENT UNITSWMU
TOXIC SUBSTANCE CONTROL ACTTSCA
FEET BELOW GRADEFBG
100-YEAR FLOOD LIMIT LINE
P&W Proprietary - “These documents are the property of United Technologies Corporation (UTC). You may not possess, use,copy or disclose these documents or any information in them, for any purpose, including without limitation to design,manufacture, or repair parts, or obtain FAA or other government approval to do so, without UTC's express written permission.Neither receipt nor possession of these documents alone, from any source, constitutes such permission. Possession, use,copying or disclosure by anyone without UTC's express written permission is not authorized and may result in criminal and/orcivil liability.” This document contains no technical data subject to the EAR or the ITAR.
·
·
B410-PRA-1 (SWMU 6)
121
LIMITS OF PROPOSED ENGINEERED CONTROL
PROPOSED CONTOUR (2 FOOT INTERVAL)
STATE & FEDERAL WETLAND BOUNDARY (SRC)
PROPOSED SE&SC SILT FENCING
PROPOSED GEOWEB SLOPE COVER
STUDY AREA BOUNDARY
PROPOSED EXCAVATION AREA
WETLAND 100-FOOT BOUNDARY (SRC)
GENERAL NOTES:
1. All excavations must be performed in accordance with the contract specifications, the 2013
Remedial Action Plan (RAP) and the to-be-completed in 2015 TSCA RAWP for PCB
contaminated soils. The specifications and requirement of the RAWP are part of the contract
documents.
2. In general, soil excavated from the site will contain contaminants at concentrations exceeded
the Connecticut Remediation Standard Regulations (RSR's).
3. Areas identified as B220-PRA-40, B330-PRA-8 & 9, B330-PRA-42A/B/C, B440-PRA-21,
B440-PRA-29, B440-PRA-30 and B450-PRA-9B contain PCBs.
4. All PCBs at concentrations greater than or equal to 1 mg/kg and less than 50 mg/kg must be
segregated and stockpiled onsite for proper offsite disposal at a Subtitle D landfill.
5. Remediation of PCB areas identified as B330-PRA-8 & 9, B330-PRA-42A/B/C, B440-PRA-21,
B440-PRA-29 and B440-PRA-30 must be completed in accordance with an EPA approved PCB
RAWP.
6. Refer to contract specifications, RAWPs, and Soil Management Plan (SMP) for soil handling
requirements.
7. The owner's construction manager shall test the soil excavation onsite and provide the
contractor with analytical results for disposal authorization.
8. Remedial excavation limits may increase depending on post-excavation confirmatory sample
analytical results collected by the owner's construction manager.
9. Underground and aboveground features have been compiled, in part, based upon information
furnished by others. This information is considered to be approximate and Loureiro
Engineering Associates, Inc. does not take responsibility for subsequent errors or omissions
that may have been incorporated into this plan as a result. The contractor is responsible for
locating all aboveground and belowground features and utilities prior to construction and
utilizing the “Call Before You Dig” phone number (811), and private utility markout contractor.
10. The RAWPs require restrictions on stockpiling; refer to the Contract Specifications for further
information.
11.Contractor shall coordinate placement of work zones and decontamination pad with owner's
construction manager prior to start of work.
12.Saw cut pavement within limits of remedial excavation (as applicable).
B410-PRA-2:
SWMU #14
ENGINEERED CONTROL
5' x 30' x 1' THICK
MODIFIED RIPRAP
LEVEL SPREADER
(END OF SWALE)
5
2
x
5
9
.
6
4" ∅ PERFORATED
UNDERDRAIN WITH
FILTER FABRIC
TYPICAL @ 1.0%± MIN.
5' x 30' x 1' THICK
MODIFIED RIPRAP
LEVEL SPREADER
4" ∅ PERFORATED
UNDERDRAIN WITH
FILTER FABRIC
TYPICAL @ 1.0%± MIN.
GEOWEB SLOPE COVER
4" ∅ PERFORATED
UNDERDRAIN WITH
FILTER FABRIC
TYPICAL @ 1.0%± MIN.
4" ∅ PERFORATED
UNDERDRAIN WITH
FILTER FABRIC
TYPICAL @ 1.0%± MIN.
EXCAVATION TO 4 FBG
EXCAVATION TO 2 FBG
4" ∅ PERFORATED
UNDERDRAIN WITH
FILTER FABRIC
TYPICAL @ 1.0%± MIN.
116
1
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B410-PRA-13
FILL AREA
(SEE DWG. C-17)
CLEAR AND
GRUB AREA
AS REQUIRED
FOR NEW WORK
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LoureiroEngineering · Construction · EH&S · Energy · Waste
Loureiro Engineering Associates, Inc.
100 N
orthw
est D
rive · Plainville, Connecticut 06062
Phone: 860-747-6181 · Fax: 860-747-8822
An Em
ployee O
wned Com
pany · w
ww
.Loureiro.com
Lou
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oEngineering ·
Construction ·
EH
&S ·
Energy ·
Waste
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P&W Proprietary - “These documents are the property of United Technologies Corporation (UTC). You may not possess, use,copy or disclose these documents or any information in them, for any purpose, including without limitation to design,manufacture, or repair parts, or obtain FAA or other government approval to do so, without UTC's express written permission.Neither receipt nor possession of these documents alone, from any source, constitutes such permission. Possession, use,copying or disclosure by anyone without UTC's express written permission is not authorized and may result in criminal and/orcivil liability.” This document contains no technical data subject to the EAR or the ITAR.
·
·
SITE
LEGEND
CHAIN LINK FENCE
TREELINE
RAILROAD
PROPERTY BOUNDARY
TOPOGRAPHIC CONTOURS (2' INTERVAL)
BUILDING/STRUCTURE
ROAD
WATERBODY/MARSH AREA
POTENTIAL RELEASE AREAPRA
ACRONYMS
SOIL EROSION & SEDIMENT CONTROLSSE&SC
SOLID WASTE MANAGEMENT UNITSWMU
TOXIC SUBSTANCE CONTROL ACTTSCA
FEET BELOW GRADEFBG
100-YEAR FLOOD LIMIT LINE
B410-PRA-2 (SWMU 14)
121
LIMITS OF PROPOSED ENGINEERED CONTROL
PROPOSED CONTOUR (2 FOOT INTERVAL)
STATE & FEDERAL WETLAND BOUNDARY (SRC)
PROPOSED SE&SC SILT FENCING
PROPOSED GEOWEB SLOPE COVER
STUDY AREA BOUNDARY
PROPOSED EXCAVATION AREA
WETLAND 100-FOOT BOUNDARY (SRC)
GENERAL NOTES:
1. All excavations must be performed in accordance with the contract specifications, the 2013
Remedial Action Plan (RAP) and the to-be-completed in 2015 TSCA RAWP for PCB
contaminated soils. The specifications and requirement of the RAWP are part of the contract
documents.
2. In general, soil excavated from the site will contain contaminants at concentrations exceeded
the Connecticut Remediation Standard Regulations (RSR's).
3. Areas identified as B220-PRA-40, B330-PRA-8 & 9, B330-PRA-42A/B/C, B440-PRA-21,
B440-PRA-29, B440-PRA-30 and B450-PRA-9B contain PCBs.
4. All PCBs at concentrations greater than or equal to 1 mg/kg and less than 50 mg/kg must be
segregated and stockpiled onsite for proper offsite disposal at a Subtitle D landfill.
5. Remediation of PCB areas identified as B330-PRA-8 & 9, B330-PRA-42A/B/C, B440-PRA-21,
B440-PRA-29 and B440-PRA-30 must be completed in accordance with an EPA approved PCB
RAWP.
6. Refer to contract specifications, RAWPs, and Soil Management Plan (SMP) for soil handling
requirements.
7. The owner's construction manager shall test the soil excavation onsite and provide the
contractor with analytical results for disposal authorization.
8. Remedial excavation limits may increase depending on post-excavation confirmatory sample
analytical results collected by the owner's construction manager.
9. Underground and aboveground features have been compiled, in part, based upon information
furnished by others. This information is considered to be approximate and Loureiro
Engineering Associates, Inc. does not take responsibility for subsequent errors or omissions
that may have been incorporated into this plan as a result. The contractor is responsible for
locating all aboveground and belowground features and utilities prior to construction and
utilizing the “Call Before You Dig” phone number (811), and private utility markout contractor.
10. The RAWPs require restrictions on stockpiling; refer to the Contract Specifications for further
information.
11.Contractor shall coordinate placement of work zones and decontamination pad with owner's
construction manager prior to start of work.
12.Saw cut pavement within limits of remedial excavation (as applicable).
SEDIMENT CONTROLBAG "SILTSACK" OREQUAL
DUMP STRAP
DUMP STRAP1" REBAR FORBAG REMOVALFROM INLET
BAG DEPTH TOTOP OF PIPE
2 EACHDUMP STRAPS
EXPANSION RESTRAINT(1/4" NYLON ROPE,2" FLAT WASHERS)
WIDTHLENGTH
DE
PT
H
CB STYLE LENGTH
TYPE 1 CB
TYPE 1 CCI
USA G2
WIDTH DEPTH
24" 20" VARIES
29.5" 24"
32.5" 27.5"
VARIES
VARIES
NOTES:
1. THE DIMENSION CHART ABOVE IS FOR STANDARD CATCH BASINS AND INLETS ONLY. THE CONTRACTOR IS RESPONSIBLE FORPROVIDING THE CORRECT SIZE DEVICE FOR EACH INLET.
2. FOR NON-STANDARD CATCH BASINS AND INLETS, THE CONTRACTOR SHALL MEASURE DIMENSIONS IN THE FIELD AND ORDERTHE APPROPRIATE SIZE(S).
3. THE INLET SEDIMENT CONTROL DEVICE SHALL BE OF HIGH FLOW DESIGN (200 GAL/MIN/FT), AS PER THE MANUFACTURER'SSPECS.
4. THE SEDIMENT CONTROL DEVICE SHALL BE INSPECTED DAILY BY THE CONTRACTOR AND MAINTAINED A MINIMUM ONCE PERMONTH OR WITHIN THE 48 HOURS FOLLOWING A STORM EVENT. FILTER SHALL BE CLEANED IN A MANNER WHICH ENSURESTHAT ALL SEDIMENT REMAINS ON SITE.
5. SUBSTITUTION OF A SHEET OF FILTER FABRIC PLACED OVER THE OPENING OF THE INLET IS NOT APPROVED.
6. RECESSED CURB INLET CATCH BASINS MUST BE BLOCKED WHEN USING FILTER FABRIC INLET SACKS, SIZE OF FILTER INLETSACK TO BE DETERMINED BY MANUFACTURER.
7. THE FILTER SHALL BE REPLACED OR CLEANED WHEN THE BAG BECOMES HALF FULL.
8. SEE INLET PROTECTION NOTES STD. DETAIL E3.
BAG DETAIL
SCALE: NONE
INLET SEDIMENT CONTROL DEVICE (SILT SACK)
INSTALLATION DETAIL
NOTE:CATCH BASIN GRATES TO BE WRAPPED W/MARAFI 500 FILTER CLOTH OR APPROVEDEQUAL AND BULKHEADED WITH HAYBALES IMMEDIATELY PRIOR TO CONSTRUCTION.
SCALE: NONE
SEDIMENT BARRIER AT CATCH BASIN
HAYBALES W/STAKES
JOINTS OFHAYBALES TO BECLOSED TIGHT
FRAME AND GRATE
FINISH GRADE
SILT FENCE
WOOD POST
12"
6"
36"
FLOW
OR
SCALE: NONE
TYPICAL SEDIMENT BARRIER DETAIL
HAYBALESW/ 2-2" X 2" X 36"WOOD STAKES EACH
(POST TO BEANGLED 10°UPSLOPE FORSTABILITY &SELFCLEANING)
COMPACTEDBACKFILL
COMPACTEDBACKFILL
4" MIN.
HIGHER THAN POINTS BPOINTS A SHALL BE
B
BA
FLOW
SCALE: NONE
SWALE SEDIMENT BARRIER DETAIL
WEDGE LOOSE STRAWBETWEEN BALES TOCREATE A CONTINUOUSBARRIER
BOTTOMOF
DRAINAGECHANNEL
PLAN
SCALE: NONE
ANTI-TRACKING PAD DETAIL
FABRICFILTER
CT-DOT 2" STONE4" MIN. DEPTH
30' LONG x 12' WIDE
GRADEEXISTING
SECTION
(15 LF MIN.)
SECTION B-B
WIDTH VARIES
PLAN
FILTER FABRIC FENCEOR HAY/STRAW BALES
DIRECTIONOF FLOW
B ABOVE LOW POINTELEV. 1.0 FT.
IN SWALEB
SCALE: NONE
FILTER FABRIC OR HAY/STRAW BALESCHECK DAM
TYP. SPACING ASDIRECTED BY THE
ENGINEER (100 LF MAX.)
NOTE
CRUSHED STONE12" HIGH
FLOW
FLOW
SCALE: NONE
SEDIMENT CHECK & CHANNEL DISSIPATER
MAY BE FLATTENED FOR VEHICULAR TRAFFIC
STONE CHECK DAM -
#4 REBAR DRILLED INTOBITUMINOUS PAVINGOREXISTING GRADE
HAY BALESWITH EXPOSED TWINE
PROPOSEDEXCAVATED
CONTAMINATEDSOIL STOCKPILE
CONTAMINATED SOIL STOCKPILE
SCALE: NONE
SEDIMENTATION CONTROL DETAIL
#4 REBAR DRILLED INTOBITUMINOUS PAVINGOREXISTING GRADE
HAY BALESWITH EXPOSED TWINE
PROPOSEDEXCAVATED
CONTAMINATEDSOIL STOCKPILE
CLEAN SOIL STOCKPILE
SCALE: NONE
SEDIMENTATION CONTROL DETAIL
10 MIL HDPE
10 MIL HDPE
20 MIL HDPELINER
INTERMITTENTSAND BAGS
SCALE: NONE
EROSION CONTROL BLANKETDRAWING
DR
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PR
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. N
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SHEETNO.
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.
LoureiroEngineering · Construction · EH&S · Energy · Waste
Loureiro Engineering Associates, Inc.
100 N
orthw
est D
rive · Plainville, Connecticut 06062
Phone: 860-747-6181 · Fax: 860-747-8822
An Em
ployee O
wned Com
pany · w
ww
.Loureiro.com
Lou
reir
oEngineering ·
Construction ·
EH
&S ·
Energy ·
Waste
©L
ou
reiro
En
gin
ee
rin
g A
sso
cia
tes,
In
c.
All
rig
hts
re
serv
ed
20
15
5
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SCALE: NONE
ENTRANCE/EXIT SCHEMATICTYPICAL EXCLUSION ZONE
DECONTAMINATIONZONE OR NOWORK ZONE
EQUIPMENTDECONTAMINATION
ZONE WITHDECONTAMINATION
PAD
CONSTRUCTION FENCE
EXCLUSIONZONE SIGN
ALL VEHICLES EXITINGEXCLUSION ZONE MUST
PASS THROUGH EQUIPMENTDECONTAMINATION
EXCLUSIONZONE SIGN
EXCLUSION ZONE
SUPPORT ZONE
PERSONNELDECONTAMINATION
ZONE
ALL PERSONNEL EXITINGEXCLUSION ZONE MUST
PASS THROUGHPERSONNEL
DECONTAMINATION
X XX X X X
X XX X X X
EXCLUSIONZONE SIGN
EXCLUSIONZONE
ENTRANCE
X X
X X
EXCLUSIONZONE SIGN
WARNINGSOIL REMEDIATIONEXCLUSION ZONE
EXCLUSION ZONEFENCE SIGN DETAIL
12" MIN.
14" MIN.
NOTES:
· THE RAWP REQUIRES RESTRICTIONS ON STOCKPILES. REFER TO CONTRACT SPECIFICATIONS FOR FURTHER INFORMATION.
· MATERIAL AND SOIL MANAGEMENT STOCKPILE SITES TO BE DETERMINED BY THE OWNER.
· MATERIAL AND SOIL MANAGEMENT STOCKPILE HEIGHTS SHALL NOT EXCEED 35 FEET.
· RESTORE MATERIAL AND SOIL MANAGEMENT STOCKPILE SITES TO PRE-EXISTING PROJECT CONDITION.
MATERIALS STOCKPILE DETAIL
SCALE: NONE
SEDIMENTATION CONTROL DETAIL
TYPICAL MATERIALAND SOIL
MANAGEMENTSTOCKPILE
DIRECTIONOF RUN-OFFFLOW(TYPICAL)
SOILEROSION &
SEDIMENTATIONCONTROLBARRIER
(TYPICAL)
SCALE: NONE
EQUIPMENT DECONTAMINATION PAD DETAIL
2-INCH MINIMUMMOUNTABLE CURB
ASPHALT WITH 20 MIL. HDPELINER, 3-INCH MINIMUMTHICKNESS
CATCH BASIN WITHSEALED SUMP
6-INCH MINIMUMBARRIER CURB,BITUMINOUS ORCONCRETE
DIRECTION OFDRAINAGE
2-INCH MINIMUMMOUNTABLE CURB
A A'
SECTION A-A'PLAN
2.00% MINIMUM SLOPE
6-INCH MINIMUMBARRIER CURB,BITUMINOUS ORCONCRETE6"
NOTE: RESTORE EQUIPMENT DECONTAMINATION PAD SITE TO PRE-EXISTING PROJECT CONDITIONS.