EROSION AND SEDIMENT POLLUTION CONTROL NARRATIVE
For
Licking Creek Bridge
State Route 58 / Section 355
Bridge Replacement Project
in
Sligo Borough
Clarion County, Pennsylvania
Prepared by:
Pennsylvania Department of Transportation
Engineering District 10-0
Indiana, Pennsylvania
D:\687301902.doc
2/6/2016
TABLE OF CONTENTS
CHAPTER 102
SECTIONS
-----
ITEM
PAGE
PROJECT DESCRIPTION
1
102.4(b)(3)
EXPERIENCE OF PLAN PREPARER
1
102.4(b)(5)
EROSION AND SEDIMENT POLLUTION CONTROL
PLAN CONTENT
102.4(b)(5)(i)
LOCATION MAP
2
102.4(b)(5)(ii)
SOILS INFORMATION
4
-----
CHARACTERISTICS OF EARTH DISTURBANCE
ACTIVITY
RUNOFF FROM PROJECT AREA AND ITS UPSTREAM
WATERSHED
RECEIVING WATERS of the COMMONWEALTH
CHAPTER 93 CLASSIFICATION
10
102.4(b)(5)(vi)
PROPOSED BMP’s
12
102.4(b)(5)(vii)
SEQUENCE OF BMP INSTALLATION
13
102.4(b)(5)(viii)
DESIGN CALCULATION SUMMARIES
15
102.4(b)(5)(ix)
PLAN DRAWINGS
17
102.4(b)(5)(x)
BMP MAINTENANCE PROGRAM
18
102.4(b)(5)(xi)
RECYCLING/DISPOSAL OF MATERIALS
20
102.4(b)(5)(iii)
102.4(b)(5)(iv)
102.4(b)(5)(v)
9
11
APPENDICES
A
DETAILS
B
SEEDING SPECIFICATIONS
C
PENNDOT SPECIFICATION SECTION 806
WATER COURSE AND SLOPE EROSION PROTECTION
D
PENNDOT SPECIFICATION SECTION 845
UNFORESEEN WATER POLLUTION CONTROL
E
WETLAND DELINEATION INFORMATION
D:\687301902.doc
2/6/2016
i
PROJECT DESCRIPTION
The following narrative describes an Erosion and Sediment Pollution Control Plan for the bridge
replacement over Licking Creek on State Route 58 Section 355. The limits of work in Sligo Borough
begin at station 574+75 and end at station 586+00. The project will include widening the approach
roadway, upgrading drainage facilities, and a complete replacement of the bridge structure. The
proposed structure centerline will be shifted 9’ – 0” to the right (downstream) to accommodate
phase construction and reduce impact to the upstream pedestrian bridge. This project is located in
Sligo Borough, Clarion County, PA with the project limits shown on the Location Map included in
this narrative.
This bridge replacement project consists of the following:







Realignment, rehabilitation and resurfacing the approach roadway.
Tie into existing roadway at stations 575+75 and 585+00.
Approach roadway lanes will be 11 feet wide with shoulders 3 feet wide.
Bridge lanes will be 12 feet wide with shoulders 6 feet wide.
Smooth transition from approach roadway width to bridge roadway width.
Upgrade/replace drainage facilities.
Temporary stream diversion (cofferdam at each abutment)
Earth disturbances will occur where the approach roadway will be widened, around the abutments
and wingwalls, where the temporary stream diversion will be located, and where cut and fill slopes
are necessary. Disturbance will also occur where drainage structures such as ditches will be cleaned
and where parallel pipes will be installed, replaced or extended. All earth disturbances will occur
within public right-of-way and within permanent and temporary easements.
The project area is approximately 3.0 acres and is defined by the boundary shown on the Location
Map and the Erosion and Sediment Pollution Control Plans. Of this area, approximately 0.85 acres
will be disturbed. No earth disturbance will be permitted outside the right-of-way and easements
during construction.
This project will require the following permits for construction:
 GP-11
102.4(b)(3)
Experience of Plan Preparer
John L. McCombie has 1 year, 9 months of experience preparing Erosion and Sedimentation Control
Plans for land development projects, highway construction projects and bridge construction projects
throughout several counties in Pennsylvania.
D:\687301902.doc
2/6/2016
1
102.4(b)(5)(i)
LOCATION MAP
D:\687301902.doc
2/6/2016
2
D:\687301902.doc
2/6/2016
3
102.4(b)(5)(ii)
SOILS INFORMATION
D:\687301902.doc
2/6/2016
4
SOILS - GENERAL
The limits of disturbance are shown on the Soils Map on the following page. The soil description for
the soil within the limits of disturbance is detailed on Page 7. Table I on Page 8 lists soil
characteristics for the soil found within the limits of disturbance. Table II on Page 8 lists the
limitations for roadway construction for the soil present at the site. All soil information is based on
the Soil Survey of Clarion County, Issued July 1958, and reissued October 1991.
D:\687301902.doc
2/6/2016
5
D:\687301902.doc
2/6/2016
6
Philo Series
The Philo series is made up of moderately well drained and somewhat poorly drained
soils of the flood plains. These soils occur as small strips along streams in all parts of the
county. There are only two types mapped in Clarion County. The Philo fine sandy loam, 0 to 6
percent slopes, is mostly in the northeastern part of the county where the Dekalb and Clymer are
the dominant upland soils. It occurs locally in other places where there is considerable
sandstone. The Philo silt loam, 0 to 6 percent slopes, occurs along streams in areas where Gilpin
and Cavode soils on the uplands. The Philo soils are associated with the well drained Pope and
the poorly drained Atkins soils of the flood plains.
The Philo soils consist of alluvium washed from upland soils that are underlain
predominantly by acid sandstones and shales. Philo soils are subject to flooding and in most
places still receive some deposits. In a few places they are being damaged and cut down by
scouring and stream erosion. Frequency of overflow varies with the height of the soil above the
stream and with the rate of flow in the stream. In some places flooding is too frequent for
cropping. Along other streams, floods are most likely early in the spring before the growing
season and damage to summer-grown crops is rare.
The native vegetation was forest and stands for mixed hardwoods still occupy about twothirds of the total area. The principal trees on Philo soils are hickory, ash, black cherry, wild
cherry, elm, willow, birch, sycamore, hornbeam, crabapple and thornapple. Basswood, butternut
and oaks are also present. On the fine sandy loam there are many hemlocks. Alder, spicebrush,
elderberry and blackberry make thick underbrush where there is an opening in the tree canopy.
The water table in these soils varies with stream levels but is usually at moderate depths.
The fairly large amounts of the total acreage in permanent pasture reflects the availability of
water for stock and the good water supply during summer months, which keeps grasses growing
when most upland pastures are not producing.
Philo silt loam, 0 to 6 percent slopes (Pb) – Most of this soil is level, but about 3
percent of it is on moderately sloping fans of recent alluvium. Individual areas on these fans are
small. The entire soil is friable and permeable to water along with being acid throughout.
The texture of this soil varies considerably and some loamy spots and a few small areas
of silty clay loam are included with the silt loam. In places the soil is underlain by gravel and
sand at depths of 3 or 4 feet. There are some areas with gravel and stone fragments on the
surface. Depth to the mottling that indicates the location of the poorly drained layer varies from
12 to 30 inches. In some areas this soil is strongly acid because sulfur water drains from the
adjacent upland where mining or coal stripping are extensive. In some watersheds where liming
has been heavy, the natural acidity has been partly neutralized by lime washed from the uplands.
As a whole, the deposits outweigh the soil losses through erosion. Some spots show
erosion caused by flooding when the soils was not covered by vegetation and was easily moved
erosion caused by diversion of strong flow from the main stream channel. (Capability unit IIw-2)
D:\687301902.doc
2/6/2016
7
TABLE I
SOIL CHARACTERISTICS
DEPTH TO
MAPPING
SLOPE
SEASONAL
SOIL NAME
UNIT
(%)
HIGH WATER
TABLE (FT)
Pb
Philo silt loam
0–6
1.5 – 3.0
DEPTH
TO
BEDROCK
(FT)
3.5 +
NOTES
1&2
NOTES:
1. Map units with INCLUSIONS OF HYDRIC COMPONENTS.
2. Map units that qualify as PRIME FARMLAND.
TABLE II
SOIL LIMITATIONS
MAPPING
UNIT
Pb
SOIL NAME
Philo silt loam
SOIL
LIMITATION
Seasonal high water table
D:\687301902.doc
RESOLUTION
TO
LIMITATION
Proper pumping practices from
excavations
2/6/2016
8
102.4(b)(5)(iii)
CHARACTERISTICS OF EARTH DISTURBANCE ACTIVITY
This project involves the replacement of Licking Creek Bridge on SR 58, Section 355 in Sligo
Borough, Clarion County, PA. Minimal approach work including widening will be completed to
accommodate the new bridge width. Runoff from this site will discharge into Licking Creek.
Permanent structures such as inlets, storm sewers and rock protection will be built at the project site.
Stormwater conveyance facilities consisting of inlets and pipe culverts will be utilized on this
project. Ditches disturbed during construction that are to remain will be reconstructed to match
existing conditions and will be immediately stabilized using erosion control mulch blanket or other
stabilization measure approved by the Engineer.
Temporary structures will include inlet protection, sediment filter bags, stream diversion devices,
and silt fence. These structures will be removed once the area is stabilized and no longer necessary,
according to the Pennsylvania Department of Environmental Protection.
Construction of the bridge and approach roadway will require extensive amounts of excavation and
embankment activities. If additional fill is necessary, it will be transported from an offsite location
to be determined by the contractor. The contractor will be required to verify with PennDOT and the
Pennsylvania Department of Environmental Protection whether the source material location is
acceptable prior to beginning removal of the material.
D:\687301902.doc
2/6/2016
9
102.4(b)(5)(iv)
RUNOFF FROM PROJECT AREA AND ITS UPSTREAM WATERSHED
Runoff from the bridge replacement project is conveyed to Licking Creek. Sediment laden runoff
will be treated by silt fence, sediment filter bags, vegetated buffer areas, inlet protection and rock
outlet protection. Runoff will be conveyed to Licking Creek through storm sewer pipes, a vegetated
ditch, and sheet flow. Permanent rock outlet protection will utilized in accordance with the
appropriate rock protection required for the wingwalls and abutments. Sediment laden water will be
pumped through the sediment filter bags from the dewatering areas inside the cofferdams prior to
being discharged into Licking Creek.
D:\687301902.doc
2/6/2016
10
102.4(b)(5)(v)
RECEIVING WATERS OF THE COMMONWEALTH
CHAPTER 93 CLASSIFICATION
One (1) watershed has been designated within the project area: Licking Creek. Licking Creek is
considered a named tributary to the Clarion River. The Licking Creek watershed within the project
limits is designated as a Cold Water Fishery (CWF) according to the Pennsylvania Code, Title 25,
Chapter 93, Water Quality Standards.
D:\687301902.doc
2/6/2016
11
102.4(b)(5)(vi)
PROPOSED BMP’s
The following is a list of Best Management Practices (BMP’s) incorporated into the design plans and
specifications and to be installed and maintained during construction:
Silt Fence
Vegetated Buffer Areas
Inlet Protection
Temporary Stream Diversion
Sediment Filter Bags
Rock Outlet Protection
Stream Bank Stabilization
Temporary Seeding
Permanent Seeding
Erosion Control Mat/Mulch Blanket
D:\687301902.doc
2/6/2016
12
102.4(b)(5)(vii)
SEQUENCE OF BMP INSTALLATION
GENERAL
The erosion and sedimentation pollution control measures and facilities shown on the plans and
described in the project narrative must be installed properly and be operational prior to any
earthmoving beginning within the project area and the up-gradient drainage areas.
The following items must be complied with under all conditions:
1. The contractor is to follow PENNDOT 408/2007 Specifications and details contained in
Standard Detail RC-70 unless otherwise instructed by the project engineer.
2. The project engineer is permitted to remedy any unanticipated erosion under the Unforeseen
Project Water Pollution Control item that is included in the contract and in accordance with
Publication 408, Section 845.
3. Temporary and permanent seeding shall be used as specified in Publication 408/2007 and as
described on Page 13-3 of Design Manual Part 2, Publication 13M.
4. No disturbed surface will be left unstabilized for more than 20 days.
5. Any slope steeper than 3:1 will be stabilized with approved erosion control matting.
6. After seed has germinated and is at least 70% uniform according to the Pennsylvania Department
of Environmental Protection, perennial ground cover is achieved, remove temporary erosion and
sediment pollution control measures.
7. Provide seed, mulch, lime, and fertilizer in accordance with PENNDOT Publication 408, Section
804. Also refer to Appendix B for detailed information on seed, lime, and fertilizer. Use the
following seed formulas where required:
a. Lawn Seeding – PENNDOT Formula B
b. Slope Seeding – PENNDOT Formula D on slopes less than 3:1 and erosion control
mat on slopes 3:1 or steeper.
c. Ditch Seeding – PENNDOT Formula B and D
d. Temporary Seeding – PENNDOT Formula E
8. The use of lime or fertilizer in wetlands is not permitted.
SR 58 CONSTRUCTION
Construction will begin at station 575+75 and end at station 585+00. Phase construction will be
performed instead of total roadway closure.
1. Install temporary erosion and sediment pollution control measures such as silt fence and stream
diversions as shown on the plans before work begins in those areas.
2. Place sediment filter bags at specified discharge locations and install pumps in dewatering area.
3. Pump any water from inside cofferdams to sediment filter bags.
4. Clear and grub areas to be disturbed in association with the construction.
5. Install temporary shoring and traffic control devices.
D:\687301902.doc
2/6/2016
13
6. Phase 1 – remove part of the superstructure and excavate the approach roadways. Place rock
construction entrances at end of excavated approach roadways. Remove the portion of the
abutments. Construct the portion of abutments and backfill.
7. Phase 2 – repeat Phase 1 construction.
8. When final grade is achieved or when earthmoving activities have been idle more than 20 days,
stabilize slopes with permanent seed and mulch. Stabilize slopes steeper than 3H:1V with
erosion control matting.
9. Excavate for combined storm sewer and inlets. Place inlets beginning at the downstream end and
immediately install inlet protection once inlets have been placed.
10. Construct bridge approaches, roadway, shoulders and guide rail.
11. Provide final stabilization measures such as permanent seeding and erosion control mat for steep
slopes that have been disturbed.
12. Remove temporary sediment pollution control measures when at least 70% uniform, perennial
ground cover is achieved, according to the Pennsylvania Department of Environmental
Protection. Seed and mulch all areas that were disturbed during construction.
POST CONSTRUCTION STORM WATER MANAGEMENT
The following is a schedule of activities for conversion to post-construction storm water
management facilities for the proposed project:
1. Once construction is completed and the site is stabilized, remove all temporary BMP’s such as
temporary stream diversion, sediment filter bags, silt fence and inlet protection.
2. For post-construction storm water management purposes, the following BMP’s will remain in
place: rock outlet protection, stabilized streambank protection, vegetated ditch, and vegetated
buffer areas.
D:\687301902.doc
2/6/2016
14
102.4(b)(5)(viii)
DESIGN CALCULATION SUMMARIES
D:\687301902.doc
2/6/2016
15
102.4(b)(5)(viii)
DESIGN CALCULATION SUMMARIES
The existing ditch at the project site will remain in place after construction has completed. This
ditch will convey water upgradient of the project in Licking Creek. No additional runoff will be
introduced to the ditch after construction is completed; therefore no calculations have been
completed for this ditch.
A stormwater pipe and inlet system will be replaced along both approach roadways at the project.
The first pipe system discharges into the aforementioned ditch. R-4 rock will be provided at the end
section of the 18” pipe to prevent erosion of the ditch. The second pipe system will discharge
upstream of the right wingwall into the rip rap provided for scour protection of the wingwall and
abutments. According to the Hydrologic and Hydraulic Report, R-8 chocked with R-4 will be
required due to the high stream velocities. Refer to the attached details and the Construction plans
for specific information on the storm water system.
D:\687301902.doc
2/6/2016
16
102.4(b)(5)(ix)
PLAN DRAWINGS
The construction drawings are separate from this Narrative but are considered
an integral part of the Erosion and Sedimentation Control Plan package.
D:\687301902.doc
2/6/2016
17
102.4(b)(5)(x)
BMP MAINTENANCE PROGRAM
MAINTENANCE DURING CONSTRUCTION
The contractor will be responsible for maintenance of both temporary and permanent control
facilities for the duration of the construction project. The contractor will also be responsible for
maintenance of all control facilities until stabilization has occurred and is verified by the
Pennsylvania Department of Environmental Protection and PennDOT.
Upon stabilization, the contractor will be responsible for removal of all temporary control facilities.
Before any temporary erosion control structures are removed, however, a vegetative coverage with a
uniform, perennial density of 70% across the disturbed areas must be achieved. Once the uniform,
perennial 70% density is achieved and approved by the Pennsylvania Department of Environmental
Protection, the Pennsylvania Department of Transportation will become responsible for maintenance
of the permanent control facilities.
The contractor is required to inspect both the temporary and permanent facilities on a weekly basis
until stabilization is achieved at which point, PennDOT will commence periodic inspections of the
permanent facilities. In addition to the weekly inspection schedule, each facility will be inspected
after each measurable runoff event. A time limit of one working day is permitted for making repairs
to erosion and sediment pollution controls that require repairs/maintenance.
If areas require additional seeding during and after construction, refer to Publication 408M, Section
804 and Section 102.4(b)(5)(vii) of this narrative for required seeding applications.
The project engineer is permitted to remedy any unanticipated erosion under the Unforeseen Project
Water Pollution Control item that is included in the contract and in accordance with Publication
408M, Section 845. Accumulated sediment removed from control structures will be redistributed
over the graded area of the project and seeded and mulched in accordance with Publication 408M,
Section 861. The contractor is responsible for providing an adequate supply of additional erosion
and sedimentation control materials to be used in the event of emergency repairs of soil erosion and
sediment controls.
EROSION AND SEDIMENT POLLUTION CONTROLS – MAINTENANCE PROCEDURES
Silt Fence
Removal of sediment from silt fences will occur when the accumulations reach one-half the above
ground height of the fence.
Sediment Filter Bags
Clean and/or replace sediment filter bags when they become one-half full. Spare bags must be kept
on the project site to replace filled or damaged bags.
D:\687301902.doc
2/6/2016
18
Inlet Filter Bags
Inspect Inlet Filter Bags weekly and after every storm event. Clean and/or replace inlet filter bags
when they become half full. Spare bags must be kept on the project site to replace bags that are filled
or damaged.
Rock Outlet Protection
Inspect Rock Outlet Protection weekly and after every storm event. Replace any riprap and/or
geotextile as needed.
Temporary Stream Diversion
Reset or replace any barriers, sandbags, liners and rock, as needed, after flood events or other
damage.
D:\687301902.doc
2/6/2016
19
102.4(b)(5)(xi)
RECYCLING/DISPOSAL OF MATERIALS
Contractor will develop and implement procedures which will ensure that the proper measures for
disposal and recycling of materials associated with or from the project site in accordance with
Department of Environmental Protection regulations. Construction wastes include, but are not
limited to, excess soil materials, building materials, concrete wash water, sanitary wastes, etc. that
could adversely impact water quality.
The contractor will inspect the project area weekly and properly dispose of all construction wastes.
Measures should be planned and implemented for housekeeping, materials management, and litter
control. Wherever possible, reusable wastes will be segregated from other waste and stored
separately for recycling.
The contractor will be responsible for submitting an Erosion and Sediment Pollution Control Plan
for any waste areas required to complete the work as required in Section 105.14, Publication 408M.
Disposal locations for excess soil/rock waste will implement appropriate BMP’s. The disposal
locations must be verified with the PA Department of Environmental Protection to ensure
compliance with wetland and floodplain regulations. These areas are to be seeded within 72 hours
after earthmoving ceases. If an offsite location is used for this disposal, the contractor is responsible
for developing and implementing an adequate Erosion and Sediment Pollution Control Plan and
submitting the plan to the PA Department of Environmental Protection and PennDOT for review and
approval.
D:\687301902.doc
2/6/2016
20
APPENDIX A
DETAILS
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
APPENDIX B
SEEDING SPECIFICATIONS
D:\687301902.doc
2/6/2016
SEEDING
A.
C.
D.
E.
PDT Formula B
1.
Species:
a.
Perennial Ryegrass
Mixture
b.
Creeping Red Fescue
or Chewings Fescue
c.
Kentucky Bluegrass
Mixture
% by weight % purity
PDT Formula D
1.
Species:
a.
Tall Fescue
b.
Creeping Red Fescue
or Chewings Fescue
% by weight % purity
PDT Formula E
1.
Species:
a.
Annual Ryegrass
% by weight % purity
Seeding rate:
1.
Formula B:
3.
Formula D:
4.
Formula E:
20
98
30
98
50
98
70
98
30
98
100
98
21 pounds per 1,000 square yards.
21 pounds per 1,000 square yards.
10 pounds per 1,000 square yards.
FERTILIZER
A.
Commercial type, conforming to the requirements of the Pennsylvania Soil
Conditioner and Plant Growth Substance Law.
1.
Use dry formulations of 10-20-20 analysis for seeded areas.
B.
Note: Fertilizer not to be used in wetland areas.
A.
Delivered to the site, stored in a dry area in the original containers which bear the
manufacturer's guaranteed statement of analysis.
1.
Lime: Raw, ground agricultural limestone containing not less than 90%
calcium carbonate and ground to such a fineness that 50% will pass through a
100 mesh sieve and 90% will pass through a 20 mesh sieve.
2.
Maintain a record of all tonnage of lime applied.
B.
Note: Lime not to be used in wetland areas.
LIME
D:\687301902.doc
2/6/2016
APPENDIX C
PENNDOT SPECIFICATION SECTION 806
WATER COURSE AND SLOPE EROSION PROTECTION
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
APPENDIX D
PENNDOT SPECIFICATION SECTION 845
UNFORESEEN WATER POLLUTION CONTROL
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
APPENDIX E
WETLAND DELINEATION
INFORMATION
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016
D:\687301902.doc
2/6/2016