HomeMy WebLinkAboutWPO201500106 VSMP -SWPPP Stormwater Management Plan 2016-01-01 -4., COUNTY OF ALBEMARLE
! f 1 ll Department of CommunityDevelopment
�� P
:~ � 401 McIntire Road,North Wing
r ?* c` Charlottesville,Virginia 22902-4596
�tly�. Tel.(434)296-5832 • Fax(434)972-4126
Stormwater Pollution Prevention Plan (SWPPP)
For Construction Activities At:
Dunlora Interconnect Project
(ACSA Project No. 2010-06)
Address: Near Dunlora Drive at Town Branch, across the Rivanna River,
and through the Key West Swim and Tennis Club at 393 Key West Drive
Hydrologic Unit Code(HUC)020802040401 —JR14
Receiving Waters: Rivanna River—Meadow Creek
WPO# 201500106
40.
Prepared by:
Michael Baker International, Inc.
Prepared for:
Albemarle County Service Authority (ACSA)
SWPPP Preparation Date: January 2016
(This document is to be made publicly available according to 9VAC25-880-70, Part II, section D)
Dunlora Interconnect Project Page 1
OWN Storm Water Pollution Prevention Plan—January 2016
Table of Contents
SECTION 1: REGISTRATION STATEMENT& NOTICE OF GENERAL PERMIT COVERAGE 3
SECTION 2: DEQ GUIDANCE MEMO 15-2003 4
SECTION 3: NATURE OF ACTIVITY 5
3.1 OVERVIEW 5
3.2 PROJECT DESCRIPTION 7
3.3 SITE CHARACTERIZATIONS 8
•• 3.3.1 EXISTING SITE CONDITIONS 8
3.3.2 SOILS 8
3.3.3 ROCK 9
r.. 3.3.4 CRITICAL AREAS 9
3.4 ESTIMATED AREA OF DISTURBANCE 9
3.5 INTENDED SEQUENCE OF CONSTRUCTION 9
SECTION 4: EROSION AND SEDIMENT CONTROL PLAN 10
4.1 EROSION CONTROL MEASURES 10
4.2 TEMPORARY STRUCTURAL PRACTICES 10
eft 4.3 TEMPORARY AND PERMANENT SEEDING 10
SECTION 5: STORMWATER MANAGEMENT PLAN 11
5.1 NEAREST RECEIVING WATERS 1 1
arr
SECTION 6: POLLUTION PREVENTION PLAN 12
6.1 SPILL PREVENTION AND CONTROL 12
6.2 CONSTRUCTION DEBRIS AND DISPOSAL 13
6.3 CONCRETE TRUCK WASHOUT 13
6.4 SANITARY FACILITIES 13
.r, 6.5 MUD,DEBRIS AND DUST CONTROL 13
6.6 STOCK PILES AND STAGING AREA 13
6.7 EFFLUENT FROM DE-WATERING ACTIVITIES 14
6.8 SOURCES OF POLLUTION 14
6.9 RESPONSE AND REPORTING 15
6.10 POLLUTION PREVENTION AWARENESS 15
SECTION 7: DISCHARGE TO IMPAIRED WATERS 16
SECTION 8: MAINTENACE OF SWPPP/QUALIFIED PERSONNEL 16
8.1 TRANSFER AGREEMENT 17
SECTION 9: CERTIFICATION 17
SECTION 10: DESIGNATION OF AUTHORITY 18
". SECTION 11: EROSION AND SEDIMENT CONTROL PLAN 19
SECTION 12: INSPECTION REPORT 20
.. SECTION 13: CONSTRUCTION GENERAL PERMIT(VAR10) 23
OW
Dunlora Interconnect Project Page 2
•. Storm Water Pollution Prevention Plan—January 2016
NW
.. SECTION 1: REGISTRATION STATEMENT & NOTICE OF GENERAL PERMIT COVERAGE
Not Applicable.
"` Coverage under the General VDPES Permit is not required per comments received from the Albemarle
County Department of Community Development review comments dated January 7, 2016 provided the
work is performed in accordance with the Commonwealth of Virginia, Department of Environmental
I'"' Quality, Water Division's Guidance Memo No. 15-2003 entitled "Postdevelopment Stormwater
Management Implementation Guidance for Linear Utility Projects under the Virginia Stormwater
Management Program Regulation, 9VAC25-870", dated April 23, 2015.
ggio
Refer to Section 2 for a complete copy of the referenced Guidance Memo.
I.
g.
OW
MS
NM
WO
MO
UN
liii
IOW
SIM
MO
Dunlora Interconnect Project Page 3
g. Storm Water Pollution Prevention Plan—January 2016
NNW
SECTION 2: DEQ GUIDANCE MEMO 15-2003
OWN
rir
NNW
Ole
Nal
r.�
OWN
IMO
Dunlora Interconnect Project Page 4
••. Storm Water Pollution Prevention Plan—January 2016
COMMONWEALTH OF VIRGINIA
DEPARTMENT OF ENVIRONMENTAL QUALITY
WATER DIVISION
Subject: Guidance Memo No. 15-2003
Postdevelopment Stormwater Management Implementation Guidance for Linear Utility
�• Projects under the Virginia Stormwater Management Program Regulation, 9VAC25-870
To: Regional Directors and Local VSMP Administrators
From: Melanie D. Davenport, Director WM,
Date: April 23, 2015
Copies: James Golden,Jeff Steers, Fred Cunningham, Joan Salvati, Allan Brockenbrough,
Jerome Brooks, Regional Stormwater Compliance Managers
Summary:
Section 76(Linear Development Projects)of the Virginia Stormwater Management Program(VSMP)
Regulation,9VAC25-870, sets forth the postdevelopment stormwater management requirements for
linear development projects. The purpose of this guidance document is to clarify the implementation of
�.. Section 76 with regards to the construction of linear utilities(e.g., waterlines, sewer lines, electric lines,
telephone lines,oil and gas distribution pipelines, etc.)and was developed for use by the Department and
local VSMP Authorities.
soy
Electronic Copy:
.. An electronic copy of this guidance document in PDF format is available for staff internally on DEQNET,
and for the general public on DEQ's website at:
http://www.deq.virginia.gov/Programs/Water/Laws,Regulations,Guidance/Guidance/WaterPermitGuidan
ce.aspx.
Contact Information:
Please contact Drew Hammond, Office of Stormwater Management, at(804)698-4037 or
Andrew.HammondWdeq.virginia.gov with any questions regarding the application of this guidance.
.. Disclaimer:
This document is provided as guidance and,as such,sets forth standard operating procedures for
the agency. However,it does not mandate or prohibit any particular action not otherwise required
or prohibited by law or regulation. If alternative proposals are made,such proposals will be
reviewed and accepted or denied based on their technical adequacy and compliance with
appropriate laws and regulations.
011111
1
rrf
Postdevelopment Stormwater Management Implementation Guidance
for Linear Utility Projects under the
Virginia Stormwater Management Program Regulation, 9VAC25-870
Definitions:
"Land disturbance" or"land-disturbing activity" means a manmade change to the land surface that
potentially changes its runoff characteristics including clearing, grading, or excavation, except that the rri
term shall not include those exemptions specified in § 62.1-44.15:34 of the Code of Virginia.
"Linear development project" means a land-disturbing activity that is linear in nature such as, but not
limited to,(i)the construction of electric and telephone utility lines, and natural gas pipelines;(ii)
construction of tracks, rights-of-way,bridges, communication facilities and other related structures of a
railroad company; (iii)highway construction projects; (iv)construction of stormwater channels and
stream restoration activities; and(v)water and sewer lines. Private subdivision roads or streets shall not
be considered linear development projects.
oda
"Postdevelopment" refers to conditions that reasonably may be expected or anticipated to exist after
completion of the land development activity on a specific site.
"Predevelopment" refers to the conditions that exist at the time that plans for the land development of a
tract of land are submitted to the VSMP authority. Where phased development or plan approval occurs
(preliminary grading,demolition of existing structures,roads and utilities,etc.),the existing conditions at
the time prior to the first item being submitted shall establish predevelopment conditions. nr
"Stabilized"means land that has been treated to withstand normal exposure to natural forces without
incurring erosion damage.
"Stormwater management plan"means a document(s)containing material for describing methods for
complying with the requirements of the VSMP Regulation,9VAC25-870. el
"Virginia Stormwater Management Program(VSMP)authority"means an authority approved by the
Board after September 13,2011 to operate a Virginia Stormwater Management Program or the
Department.
Regulatory Text:
.ri
9VAC25-870-76. Linear development projects.
Linear development projects shall control postdevelopment stormwater runoff in accordance with a site-
specific stormwater management plan or a comprehensive watershed stormwater management plan
developed in accordance with these regulations.
lig
2
Guidance:
.00
Section 76 of the VSMP Regulation, 9VAC25-870, establishes the requirement that linear development
projects control postdevelopment stormwater runoff in accordance with a site-specific stormwater
... management plan or a comprehensive watershed stormwater management plan. The purpose of this
guidance document is to clarify the implementation of Section 76 with regard to the construction of linear
utilities(e.g.,waterlines, sewer lines, electric lines,telephone lines, oil and gas distribution pipelines, etc.)
and was developed for use by the Department and local VSMP Authorities.
The VSMP Regulation does not distinguish between various types of linear development projects such as
aboveground or underground utilities,highway construction,rights-of-way,bridges,tracks and related
structures of a railroad company. The Department of Environmental Quality(DEQ)recognizes that the
construction of aboveground or underground linear utilities may not result in changes to the
predevelopment runoff characteristics of the land surface after the completion of construction and final
stabilization. Also,the application of the postdevelopment water quantity and water quality controls to
these types of projects and the preparation and implementation of a stormwater management plan may
provide minimum water quality benefit. Examples of such projects include:
• The installation of underground utilities(e.g., waterlines, sewer lines, oil and gas distribution
pipelines)beneath existing impervious cover(e.g., asphalt pavement, concrete pavement)that
- will be returned to its predevelopment condition after the completion of construction and final
stabilization;
• The installation of underground utilities(e.g.,waterlines, sewer lines, oil and gas distribution
pipelines)beneath existing pervious cover(e.g., forest/open space, managed turf)that will be
returned to its predevelopment condition after the completion of construction and final
stabilization; or
• The installation of aboveground(i.e., overhead)utility lines.
11011
DEQ staff or the local VSMP authority should utilize their best professional judgment when evaluating
aboveground or underground linear utility projects. If the project will not result in significant changes to
the predevelopment runoff characteristics of the land surface after the completion of construction and
final stabilization,then DEQ or the local VSMP authority, at their discretion,may waive the requirement
for the preparation and implementation of a stormwater management plan. DEQ recognizes that on a site
specific basis a stormwater management plan may be required especially if the linear utility project will
significantly alter the predevelopment runoff characteristics of the land surface.
In addition,the construction of aboveground or underground linear utilities may be conducted without
+.� requiring coverage under the General VPDES Permit for Discharges of Stormwater from Construction
Activities(Construction General Permit)provided that:
,.. • The project does not significantly alter the predevelopment runoff characteristics of the land
surface after the completion of construction and final stabilization;
• The project is managed so that less than one(1)acre of land disturbance occurs on a daily basis;
• The disturbed land where work has been completed is adequately stabilized on a daily basis;
• The environment is protected from erosion and sedimentation damage associated with the land-
disturbing activity;
3
• The owner and/or construction activity operator designs, installs, implements, and maintains
pollution prevention measures to:
D Minimize the discharge of pollutants from equipment and vehicle washing, wheel wash di
water, and other wash waters;
D Minimize the exposure of building materials,building products,construction wastes, rad
trash, landscape materials, fertilizers, pesticides, herbicides,detergents, sanitary waste,
and other materials present on-site to precipitation and to stormwater;
D. Minimize the discharge of pollutants from spills and leaks and implement chemical spill
and leak prevention and response procedures;
D Prohibit the discharge of wastewater from the washout of concrete;
D Prohibit the discharge of wastewater from the washout and cleanout of stucco, paint,
form release oils, curing compounds, and other construction materials;and rad
D Prohibit the discharge of fuels, oils,or other pollutants used in vehicle and equipment
operation and maintenance. erai
• The owner and/or construction activity operator provides reasonable assurance to DEQ or the
local VSMP Authority that all of the above conditions will be satisfied. This may be rr
accomplished by incorporating these conditions into an erosion and sediment control plan
developed for the project.
As previously noted, DEQ staff or the local VSMP authority should utilize their best professional
judgment when evaluating aboveground or underground linear utility projects. If the owner and/or
construction activity operator provides reasonable assurance to DEQ or the local VSMP Authority that all
of the aforementioned conditions will be satisfied,then the linear utility project may be conducted without
requiring coverage under the Construction General Permit. Please note that this does not relieve the
owner and/or construction activity operator from complying with any and all other applicable federal,
state, and local requirements. DEQ or the local VSMP Authority reserves the right to require a
registration statement for Construction General Permit coverage if the aforementioned conditions are not
satisfied.
dl
If the linear utility project will significantly alter the predevelopment runoff characteristics of the land
surface requiring postdevelopment stormwater management or if other site specific conditions warrant
Construction General Permit coverage, DEQ or the local VSMP authority may require a registration dra
statement for permit coverage.
dip
4
SECTION 3: NATURE OF ACTIVITY
3.1 Overview
The SWPPP has been prepared for land disturbing activities directly associated with the
construction of the Dunlora Interconnect Project, which is located in Albemarle County, Virginia.
Included in this SWPPP are the elements necessary to comply with the General Permit issued by
the Virginia Department of Environmental Quality (VDEQ) under the Virginia Stormwater
Management Program(VSMP). Omissions from this SWPPP do not relieve the Operator of his/her
responsibility for compliance with the regulations contained in 9VAC25-870 et seq. and 9VAC25-
- 880 et seq., of the Virginia Administrative Code.
The project requirements include all labor, materials, equipment, incidentals and other means of
.. temporary and/or permanent construction necessary or proper for performing and completing the
work as shown in the Contract Documents. These requirements include erosion and sediment
control measures, as well as the control of stormwater runoff and discharges from construction
.�. activities. No site development activities will occur as a result of this project.
Key elements of this project include:
• Temporary land disturbances will be kept to the minimum required in order to facilitate
construction activities;
NINO
• High-definition preconstruction site photography shall be performed, clearly documenting
the existing site and structure conditions within the work limits, easement areas, staging
areas and access routes for this Contract;
• Trenching operations will be performed using both rubber-tire and track-mounted
equipment. All excavated areas will be secured using trench boxes, steel plating, or other
shoring mechanisms;
• Trench excavations will be limited to a distance of not more than one hundred (100) feet
along streets and highways and two hundred (200) feet at other locations ahead of pipe
laying at any time,unless specifically authorized by the Engineer;
— • The total estimated land, disturbance at the ground surface level is estimated to be
approximately 3.96 acres.
• Only suitable, unfrozen material excavated during construction (free from cinders, ashes,
refuse,organic material or other deleterious material)will be used for backfill;
• Backfill material will be compacted in lifts to prevent subsequent settlement;
• All surplus material excavated from the trench will be removed from the site and disposed
of in a proper and legal manner;
NO
• Source control methods will be provided at the project site to reduce the amount of
pollutants entering stormwater runoff;
VIM
Dunlora Interconnect Project Page 5
MIN Storm Water Pollution Prevention Plan–January 2016
rr�
• Establishment of a dense permanent cover of grass by seeding for all areas disturbed by „,d
construction operations. In areas where sod may be used,sod shall be well rooted,healthy,
pasture type sod, reasonably free from weeds.
imi
• Restoration efforts will be performed to match pre-construction conditions,with no
changes in grading,or stormwater runoff quality, quantity or velocity. toi
It is the policy of the Albemarle County Service Authority (Owner)to ensure compliance with the
Commonwealth of Virginia's regulations regarding the discharge of stormwater from construction
and land disturbing activities associated with the construction of linear pipe and appurtenances, or
other facilities, as part of all Authority-owned construction projects.
The Operator is required to conform to all aspects of the VSMP regulations, as contained in
9VAC25-870 et seq. and 9VAC25-880 et seq., of the Virginia Administrative Code. Full .rt
conformance with the VSMP General Permit regulations will be required for all portions and/or
phases of the work.
rr
The prime Operator, its subcontractors, or any other parties involved with any activity that disturb
soils, or who implement a pollutant control measure identified in the Storm Water Pollution
Prevention Plan(SWPPP), as part of this project,must comply with the requirements of:
• Virginia Stormwater Management Program (VSMP)Regulation;
Nei
• VSMP General Permit for Discharges of Stormwater from Construction Activities;
• Virginia Erosion and Sediment Control Handbook(current edition);
tei
• Albemarle County Service Authority (ACSA)Construction Specifications, latest edition;
io
• Albemarle County Design Standards Manual, latest edition; "'
• Albemarle County Code of Ordinance; and,
• other documents which may be incorporated in this SWPPP by reference.
The Operator must comply with the VSMP General Permit (VAR10) notification and •w
SWPPP accessibility requirements in accordance with Part II C and Part II D of the General
Permit,respectively.A copy of the SWPPP document shall be kept on site at all times,and be
available to the general public. The Operator shall maintain the posted information until .,
termination of general permit coverage as specified in Part I F of the General Permit.
The Operator shall be responsible for all aspects of erosion and sediment control by, as required by
the General Permit, including but not limited to:
• Performing the required routine inspections of control measures;
irr
• Participating in any required site inspections by DEQ,the local program authority,or other
agencies;
Dunlora Interconnect Project Page 6
Storm Water Pollution Prevention Plan—January 2016
NNW • Repairing, replacing or installing additional erosion measures, as required to mitigate
deficiencies;
• Provide required revisions, additions and/or deletions to sub-sections of the SWPPP as
110
required or at the direction of DEQ,the local program authority or other agencies;
• Incorporation of additional sub sections to the SWPPP as required or at the direction of
•" DEQ,the local program authority or other agencies;and,
• Payment of any and all fees,fines, or penalties, as a result of noted deficiencies, bypass or
upsets.
3.2 Project Description
NNW
The Dunlora Interconnect project includes the construction of: approximately 3,870 linear feet of
12-inch diameter water main. Approximately 3,256 linear feet of ductile iron(DI)water main will
be installed by open-trench methods; and, approximately 614 linear feet of fusible poly-vinyl
chloride (FPVC) pipe being installed by horizontal directional drill methods. Associated
appurtenance installations include: water supply stations; hydrants; bollards; air releases; blow-
offs; valves and valve/access boxes; flow meter manhole; concrete thrust anchors and blocking;
NNW
erosion and sediment control;surface and site restoration;and all other labor,materials,equipment,
incidentals and other means of temporary and/or permanent construction necessary or proper for
performing and completing the Work as shown in the Contract Documents.
Currently,the Key West subdivision is connected to the public water supply through a water main
located along Stony Point Road (Route 20). The new main will serve as a redundant feed to the
Key West subdivision, in order to enhance overall system reliability and operational flexibility, as
well as provide increased fire protection to residences within the Key West subdivision.
Additionally,this water main may be used, in times of emergency,to back feed and provide water
service to the Pantops area.
The project will consist of the following basic activities:
• Site grading(minor,as part of restoration efforts and abandonment)
�.. • Paving work
• Installation of utilities
• Other activities(erosion and sediment control;temporary traffic control;and,and all other labor,
materials,equipment, incidentals and other means of temporary and/or permanent construction
necessary or proper for performing and completing the Work as shown in the documents)
Without adequate control, there is the potential for pollutants to be transported by storm water.
Construction phase pollutant sources anticipated at the site are:
• Disturbed(bare)soil
WWI
• Vehicle fuels and lubricants
low
Dunlora Interconnect Project Page 7
Storm Water Pollution Prevention Plan—January 2016
• Chemicals associated with building construction,and building materials
• Asphalt and asphalt pavement waste
ai
• Chlorine for water line flushing
1
• Other pollutants(including but not limited to: uncontaminated effluent(groundwater)from
trench de-watering activities; dust; construction debris; litter; recyclable materials; on-site
sanitary facilities; dumpsters; waste piles; stockpiles; vehicle wash and/or concrete truck
washout locations; paints; stains; soaps; solvents; detergents; mulches; fertilizers; or other
caustic materials and petroleum-based products.)
3.3 Site Characterizations
rrt
3.3.1 Existing Site Conditions
Prior to commencing construction digital photography shall be performed by the Operator rri
clearly documenting the existing site and structure conditions within the work limits and
access routes for this Contract.
This project alignment is located in mix of grassed,treed and paved areas,with its segments
being generally described as follows:
• On the west side of the Rivanna River, the project is located within the Dunlora
subdivision. The project alignment is located predominantly across open land,and
parallel to and on the south side of ACSA's existing gravity sewer line through
property owned by Club Dunlora,LLC. With the exception of the downslope area
between Dunlora Drive and Dunlora Farm Road, the area is used for agricultural
purposes. Open cut trench installations will be performed across this area.
wt
• A sub-aqueous crossing of the Rivanna River channel bottom will be achieved
using horizontal directional drilling techniques, with entry and exit points being
located beyond the top of bank on both sides. •�
• On the west side of the Rivanna River, the project is located within the Key West
Swim and Tennis Club. The project alignment is across vegetated and open lands, art
and will be offset from and parallel to the existing gravel access way. A portion
of this area is utilized for recreational purposes, with the other portion being
utilized for agricultural purposes. Open cut trench installations will be performed
across this area.
3.3.2 Soils ea
The Natural Resources Conservation Service's Web Soil Survey indicates the following
soils which may be present with the project limits:
eta
Dunlora Interconnect Project Page 8
Storm Water Pollution Prevention Plan—January 2016
�.. Map Unit Symbol Map Unit Name
2C Albemarle fine sandy loam, 7 to 15 percent slopes
10 Buncombe loamy sand
12D Catoctin silt loam, 15 to 25 percent slopes
16 Chewacla silt loam
21D Culpeper fine sandy loam, 15 to 25 percent slopes
39D Hazel loam, 15 to 25 percent slopes
39E Hazel loam,25 to 45 percent slopes
48D Louisburg very stony sandy loam, 15 to 25 percent slopes
76 Riverview loam
W Water
Source: Natural Resources Conservation Service Soil Survey Area: Albemarle County, Virginia
Web Soil Survey: http://websoilsurvey.nrcs.usda.gov Survey Area Data: Version 10, Dec 11, 2013
3.3.3 Rock
40.
No representation is provided regarding the presence or nature of rock within the project
limits. The Contract Documents state that all excavations are unclassified. It shall be the
Operator's responsibility to determine the nature and extent of rock presence
3.3.4 Critical Areas
ENV
Disturbances in steep slope areas will be kept to the minimum required for construction in
accordance with Chapter 17 of the Albemarle County Code. These areas are anticipated
between Dunlora Drive and Dunlora Farm Road. In accordance with Section 02920 of the
Project Manual, the Contractor will be required to utilize soil stabilization blankets (or
other methods, if approved)to prevent erosion in areas of steep slope.
"O 3.4 Estimated Area of Disturbance
The estimated total area of land disturbance equals approximately 172,341 square feet(3.96 acres),
"" and includes areas of clearing or excavation, as identified on the plans. The horizontal directional
drill across the Rivanna River will not cause any surface disturbance, except at the entry and exit
pits, which are included in the estimated area of disturbance. No additional off-site staging and/or
storage areas are anticipated, or included in the Contract Documents.
3.5 Intended Sequence of Construction
ION
All construction methods and materials will conform to the project documents and applicable
regulatory requirements including Albemarle County Service Authority standards and/or
preferences,City and/or County ordinances, state codes, amendments, and laws.
Erosion and sediment control measures shall be placed prior to, or as the first step in construction.
The Operator shall be responsible for maintaining these measures throughout the life of the project.
INV
In accordance with the Contract Documents, it shall be Operator's responsibility to propose a
%r
Dunlora Interconnect Project Page 9
�"'" Storm Water Pollution Prevention Plan—January 2016
w
construction schedule to complete all work in the specified contract completion time period, and esi
the Operator shall be responsible for the sequencing, means and methods, scheduling and
coordinating the Work, for monitoring the progress of the Work, and for taking appropriate action
to keep the Work on schedule.
The actual schedule for implementing pollutant control measures will be determined by project
construction progress. Down slope protective measures must always be in place before soil is
disturbed.
Upon re-establishment of seeded areas, and when authorized by Owner or its duly appointed
representative(s),after final inspection,the Operator will remove all erosion and sediment controls.
SECTION 4: EROSION AND SEDIMENT CONTROL PLAN
4.1 Erosion Control Measures
Erosion and sediment control shall be in accordance with the Minimum Standards, as set forth
under 9VAC25-840-40 of the Virginia Administrative Code. Unless otherwise indicated, all
vegetative and structural erosion and sediment control structural practices shall be constructed and
maintained according to minimum Standards and Specifications of the Virginia Erosion and
ad
Sediment Control Handbook, latest edition.
The Operator shall be required to provide erosion and sediment control measures during all phases
of the work. All erosion and sediment control measures shall be installed and maintained in "'r`
accordance with the Contract Documents. The erosion and sediment controls shown on the plans
represent the minimum required.
The Operator may be required to provide additional controls as necessary to prevent erosion and
sedimentation at the direction of the Owner or its duly appointed representative,or in the event that
site conditions require additional controls in order to effectively control erosion and sedimentation. rri
All temporary erosion and sediment control measures shall be removed within thirty(30)days after
final site stabilization or after the temporary measures are no longer needed, unless otherwise
authorized by the Owner or its duly appointed representative. Trapped sediment and the disturbed
soil areas resulting from the disposition of temporary measures shall be permanently stabilized to
prevent further erosion and sedimentation.
4.2 Temporary Structural Practices
Some controls are intended to function temporarily, and will be used for erosion and sediment "d
control during the construction period. These include: Standard Erosion and Sediment Control
Notes; Temporary Silt Fence, denoted as "SF" on the plans; Tree Protection, denoted as "TP" on
the plans; and Inlet Protection, denoted as "IP" on the plans Reference is made to Straw Bale
Barriers as an additional practice to be utilized if field conditions warrant.
Erosion and sediment control measures shall be in accordance with Section 02370 (Erosion and .r
Sediment Control)of the Contract Documents.
4.3 Temporary and Permanent Seeding ,rr
Seeding and mulching procedures shall conform to the applicable provisions of the Virginia
a
Dunlora Interconnect Project Page 10
Storm Water Pollution Prevention Plan—January 2016
Erosion and Sediment Control Handbook. Vegetated/grassed areas will be temporarily and
permanently stabilized by seeding.
Permanent or temporary soil stabilization shall be applied to denuded areas within seven (7) days
after final grade is reached on any portion of the site. Temporary soil stabilization shall be applied
within seven (7) days to denuded areas that may not be at final grade but will remain dormant for
longer than fourteen(14)days. Permanent stabilization shall be applied to areas that are to be left
tam, dormant for more than one (1) year. Soil stabilization measures shall include (but not limited to)
vegetative establishment,mulching,and the early application of gravel base material on areas to be
paved.
law
At the beginning of the next planting season, following that in which the permanent grass was
sown, the stand will be inspected. Grassed areas will be accepted if a ninety-five percent (95%)
cover by permanent grasses has been established and weeds are not excessive. Re-grade, fertilize
and reseed any areas not acceptably covered with dense grass or containing significant stands of
weeks. Continue to water, weed, fertilize and otherwise maintain the entire stand until the end of
that planting season,when another inspection will be made. Only when a dense stand of weed-free
grass is established will the planting be accepted.
SECTION 5: STORMWATER MANAGEMENT PLAN
Neither modifications to the current drainage pattern,nor changes in stormwater runoff quantity or
quality will result from this project. No additional impervious area will be generated as a result of
this linear development project; and,there will be no changes in volume/velocity of runoff caused
by this project.
v. Temporary erosion and sediment control measures will be utilized to control stormwater runoff
during construction,while permanent seeding measures will control post-development stormwater
runoff in the same manner as pre-development conditions. As this project will not result in
significant changes to the pre-development runoff characteristics of the land surface upon
completion of construction and final stabilization, it is our understanding the preparation and
implementation of a separate stormwater management plan will not be required, as such a plan
would provide minimum water quality benefit. (Interpreted from Guidance Memo No. 15-2003,
Postdevelopment Stormwater Management Implementation Guidance for Linear Utility Projects
under the Virginia Stormwater Management Program Regulation, 9VAC25-870, dated April 23,
2015.)
wor
The Operator shall maintain proper drainage at all times during construction to prevent localized
flooding or other detrimental stormwater management conditions. The Operator is required to
strengthen, augment, or provide other erosion control measures as required, in order to control
erosion. The Operator shall restore drainage patterns and ground cover conditions to be consistent
with original materials and conditions.
5.1 Nearest Receiving Waters
two The project site is located within Hydrologic Unit Code (HUC) 020802040401-JR14, with the
nearest receiving waters to the project site being: 1)Town Branch,a tributary to the Rivanna River;
2) the main channel of the Rivanna River; and, 3) an unnamed tributary to the Rivanna River,
„r„ stemming from the outfall of Bailey's Dam. All water bodies are adjacent to the project site.
..r
Dunlora Interconnect Project Page 11
..p Storm Water Pollution Prevention Plan—January 2016
wt
SECTION 6: POLLUTION PREVENTION PLAN
A variety of temporary stormwater pollution controls or Best Management Practices(BMPs)have
been included in the construction plans for this project. These controls are reflected in the erosion
and sediment controls notes and details, as shown in the Erosion and Sediment Control plan. Such "d
control measures are considered part of this SWPPP and are to be installed and maintained as a
condition of the VSMP General / Stormwater Management Permit issued for this project and
Virginia Erosion and Sediment Control Law.
Note: There are no permanent BMPs to be constructed as a part of this project.
wi
Vegetated/grassed areas will be permanently stabilized by seeding. Seeding and mulching
procedures shall conform to the applicable provisions of the Virginia Erosion and Sediment Control
Handbook.
The Operator shall be responsible for prevention of discharge of solid materials and wastes to the
surface waters adjacent to the site. Water used for construction, which discharges from the site,
rig
must originate from a public water supply or private well approved by the Virginia Department of
Health. Water used for construction that does not originate from an approved public supply must
not discharge from the site, and it to be retained in ponds until it infiltrates and/or evaporates.
The Operator must update the plan to reflect its operation and to identify and
maintain current descriptions and storage/locations of all potential pollutant sources.
Potential sources of pollution include, but are not limited to: litter, construction
debris, recyclable materials, on-site sanitary facilities, dumpsters, waste piles,
stockpiles, vehicle wash and concrete truck washout locations, fuels, oils, greases,
hydraulic fluids, lubricants, paints, stains, soaps, solvents, detergents, chemicals,
fertilizers,or other caustic materials.
The Operator shall submit a detailed dewatering plan to the Albemarle County Service Authority,
or its duly appointed representative, prior to initiating any excavation or dewatering, in
accordance with the plan set.
6.1 Spill Prevention and Control
Substances that have the potential for polluting surface and/or groundwater must be controlled by
any means necessary to ensure there is no discharge from the project area. The Operator shall
provide proper storage,handling, and use of all potential pollutant sources. Such measures will be
provided to control drips, leaks or spills, and may include (but not be limited to) secondary
containment, such as portable dikes, berms, spill containment pallets, drip pans and spill recovery
and cleanup kits.
to
All drips, leaks or spills shall be cleaned in a manner consistent with the magnitude of the impact
they represent, and be disposed of in accordance with all local, state and/or Federal regulations.
This includes the removal, treatment and disposal of affected soil, to prevent impacts to
groundwater.
All storage containers, regardless of their contents, shall have approved spill containment where
required,be in sound condition, and free of rust, cracks or other damage which might compromise tor
Dunlora Interconnect Project Page 12
Storm Water Pollution Prevention Plan—January 2016
the containment. Hoses, valves, fittings, caps, filler nozzles and associated hardware shall be
maintained in proper working condition at all times.
To notify DEQ Valley Regional Office of a spill during normal business hours of 8:30 a.m.to 4:30
p.m., Monday through Friday, call the Pollution Reporting and Environmental Response (PREP)
Coordinator, Jennifer Welcher at (540) 574-7854 or (540) 574-7800. Alternatively, citizens and
permittees may report pollution events online at:
%Er http://www.deq.state.va.us/Programs/PollutionResponsePreparedness/PollutionReportingForm.aspx
Nights,holidays,and weekends,call the Department of Emergency Management's(DEM)24 hour
�• reporting number at(800)468-8892(in-state calls only)or(804)674-2400(out-of-state calls). The
DEM staff will relay the information to on-call DEQ personnel.
... 6.2 Construction Debris and Disposal
No solid materials (including building materials, cartons, containers or other packaging) are
allowed to be discharged from the site with storm water. All solid waste, including disposable
materials incidental to the major construction activities, must be collected, removed from the site
and disposed of in a legal manner.
6.3 Concrete Truck Washout
Direct all concrete truck wash water into a leak-proof container or leak-proof settling basin. The
container or basin shall be designed so that no overflows can occur due to inadequate sizing or
precipitation. Hardened concrete wastes shall be removed and disposed of in a manner consistent
with the handling of other construction wastes. Liquid concrete wastes shall be removed and
disposed of in a manner consistent with the handling of other construction wash waters and shall
not be discharged to surface waters.
o.. 6.4 Sanitary Facilities
All personnel involved with construction activities must comply with state and local sanitary or
septic system regulations, and be serviced regularly. Temporary sanitary facilities provided at the
site shall be serviced by a commercial operator, and shall comply with state and local sanitary or
septic system regulations. In accordance with OSHA regulations, hand washing facilities must be
provided.
6.5 Mud,Debris and Dust Control
The Operator shall clean streets of mud and dust and take whatever measures necessary to insure
that the streets are kept in a clean and dust free condition at all times.
Dust control shall be provided by the Operator to a degree that is acceptable to the Owner, and in
compliance with applicable local and state dust control regulations.After construction,the site will
be stabilized(as described elsewhere),which will reduce the potential for dust generation.
leo
6.6 Stock Piles and Staging Area
*1. Stock piles of soil and other erodible materials shall be stabilized or protected with sediment
trapping measures. The Operator is responsible for the temporary protection and permanent
stabilization for stockpiles onsite as well as for materials transported from the project site. As a
t..
Dunlora Interconnect Project Page 13
"' Storm Water Pollution Prevention Plan—January 2016
result of the project being a linear water main installation project,the staging area will be constantly „ei
moving with the trench,except in the area of the horizontal direction drill which will be a stationary
operation. No off-site staging/storage areas have been identified in the Contract Documents. If
additional stockpiling or staging areas are required, it is the responsibility of the Operator to legally
odi
obtain these areas.
6.7 Effluent from De-watering Activities
ri
Uncontaminated effluent from dewatering operations shall be filtered through a VDOT-approved
sediment dewatering system, and discharged in a manner that does not adversely affect adjacent
properties,wetlands,waterways,or the storm drainage system.Approved systems include;Dirtbag
55 by ACF Environmental,Filter Bag by GeoProducts LLC, Ultra-Dewatering Bag by UltraTech,
and FB1, FB3, and FB4 by Frank Roberts & Sons, Inc. The dewatering system shall be in
accordance with VDOT Standard Detail EC-8 of the VDOT Road and Bridge Standards. ,.;,
No contaminated effluent or groundwater may be discharged without a separate
Virginia Pollutant Discharge Elimination System (VPDES) discharge permit. reit
6.8 Sources of Pollution
rot
The operator shall note the following potential sources of pollution and implement appropriate
pollution prevention practices or control measures.
Pollutant,or Pollutant Prevention Practices,
Generating Activity Location on site Control Measures
Follow Erosion and Sediment
Control Plan. Dispose of
Clearing,grading,excavating, Land disturbance area clearing debris at acceptable
and un-stabilized areas disposal sites. Seed and mulch,
or sod within 7 days of land
clearing.
Cover storm drain inlets and use
Paving operations Driveway and Paved drip pans and absorbent/oil dry +ot
Construction Entrances for all paving machines to limit
leaks and spills.
Direct concrete wash water into
Concrete washout and a leak-proof container or leak-
cement waste Current location shown on plan proof settling basin that is
designed so that no overflows
can occur.
Enclose or cover material
storage areas. Mix paint indoors
Structure construction,water in a containment area or in a flat
unpaved area.Prevent the
main construction,stucco, Structures discharge of soaps, solvents,
painting, and cleaning detergents and wash water,
paint,form release oils and
curing compounds.
Water shall be filtered,settled or
Dewatering operations Dewatering sites shown on plan similarly treated prior to
discharge as shown on plan.
Dunlora Interconnect Project Page 14
Storm Water Pollution Prevention Plan—January 2016 erg
Pollutant,or Pollutant Prevention Practices,
ActivityLocation on site
Generating Control Measures
Designated areas for material
�., delivery and storage. Placed
Material delivery and storage Designated area shown on plan near construction entrances,
away from waterways and
drainage paths.
was Material use during building Follow manufacturer's
Building areas instructions and provide all
process
MSDS sheets.
Waste collection area will not
receive a substantial amount of
runoff from upland areas and
does not drain directly to a
�.. Solid waste disposal Current designated container waterway. Containers have lids
areas on plan covered before periods of rain,
or are in a covered area.
,,,,, Scheduled collection to prevent
overfilling. MATERIALS NOT
TO BE BURIED ON-SITE.
Convenient and well-maintained
woo portable sanitary facilities will
Sanitary waste Current locations shown on plan be provided,and located away
from waterways or inlets. Such
,,,s facilities shall be regularly
maintained.
Apply fertilizers in accordance
Landscaping operations Landscaped areas with manufacturer's
i"' recommendations and not during
rainfall events.
To be treated in a sediment basin
$.0or better control as specified on
Wash Waters Wash areas shown on plan plan. Minimize the discharge of
pollutants from equipment and
vehicle washing.
"' Provide containment and
Vehicle and equipment washing Designated areas shown on plan filtering for all wash waters per
the plan.
The Operator shall minimize the exposure of building materials, building products, construction
wastes,trash, landscape materials,fertilizers,pesticides,herbicides,detergents,sanitary waste,and
other materials present on the site to precipitation and to stormwater.
6.9 Response and Reporting
Response and reporting of any leaks, spills or discharges shall be in accordance with Part III
(Conditions Applicable to All State Permits)of the General Permit.
6.10 Pollution Prevention Awareness
The SWPPP shall be kept on site an accessible at all times and the content of the SWPPP will be
.�. included as an agenda item and discussed at regularly scheduled progress meetings.
woo
Dunlora Interconnect Project Page 15
Storm Water Pollution Prevention Plan—January 2016
SECTION 7: DISCHARGE TO IMPAIRED WATERS w
Not Applicable.
SECTION 8: MAINTENACE OF SWPPP/QUALIFIED PERSONNEL
The techniques described in this SWPPP focus on providing control of pollutant discharges with
practical approaches that utilize readily available expertise, materials, and equipment.
Refer to Part II B (Stormwater Pollution Prevention Plan) of the General Permit for specific
requirements regarding amendments,modifications and updates to the SWPPP.
Unless otherwise noted in the General Permit,a complete copy of the SWPPP, including copies of
all inspection reports,plan revisions,etc.,must be retained by the Operator at the project site at all
times during working hours. Upon completion of the project, the Owner will file the Notice of
Termination form with VDEQ. The SWPPP shall be kept in the Owner's permanent project records
for at least three(3)years following submission of the Notice of Termination form. Authorization
to discharge terminates at midnight on the date that the Notice of Termination is submitted.
The Operator must provide names and addresses of all subcontractors working on this project who
will be involved with all construction activities that disturb site soil. This information must be kept rwr
with this SWPPP.
The Operator and all subcontractors involved with land disturbing for this project must maintain
updated project documentation,which will be incorporated into construction records, and retained
for at least three(3)years following expiration or termination of the permit.
As described below, the Operator shall conduct regular inspections to determine effectiveness of
the SWPPP. The SWPPP shall be modified by the Operator as needed to prevent pollutants from
discharging from the site. The Operator's inspector must be both a person familiar with the site
and the nature of the major construction activities and be qualified to evaluate both overall system
performance and individual component performance. Additionally, the Operator's qualified
representative,Jeremy Lynn, P.E.(Tele.434-977-4511 Ext.114)shall be empowered to implement
modifications to this SWPPP and the pollutant control devices, if needed, or in order to increase "'d
effectiveness to an acceptable level. If a Transfer of Ownership Agreement is completed, the
qualified representative listed above will be void and the new Operator's qualified individual shall
be listed below:
Updated Qualified Individual Telephone
This SWPPP shall be updated each time there are modifications to the pollutant prevention system
or a change of Operators working on the project that disturbs site soil. The Operator shall notify
the Owner before these modifications are implemented, unless immediate Operator action is
necessary to prevent unauthorized discharges. If immediate Operator action is needed, then the
Operator shall notify the Owner of the action as soon as possible. a
This SWPPP must be amended as necessary during the course of construction in order to keep it
a
Dunlora Interconnect Project Page 16
Storm Water Pollution Prevention Plan—January 2016
Nmt
current with the pollutant control measures utilized at the site. Amending the SWPPP does not
imply a formalized update and re-print.It is acceptable to add addenda,sketches,handwritten notes,
new sections,revised drawings, and/or other pertinent records or documentation as applicable.
If a section or phase of the project reaches final stabilization prior to the entire project reaching
final stabilization, then that section may be clearly marked on the site plans and the date of final
stabilization recorded in the SWPPP. Areas so marked are no longer required to be inspected as a
part of permit compliance.
This SWPPP is intended to control water-borne and liquid pollutant discharges by some
low combination of interception, filtration, and/or containment. The Operator and all subcontractors
implementing this SWPPP shall remain aware of the need to periodically refine and update the
SWPPP in order to accomplish the intended goals.
This SWPPP shall be amended as necessary during the course of construction in order to keep it
current with the pollutant control measures utilized at the site. Amendments to the SWPPP may
include, but are not limited to: handwritten revisions; added, deleted or modified sections as
applicable;contract Change Orders; sketches and/or revised drawings.
A review of the contents of the SWPPP shall be a standing agenda item and shall be discussed at
"`w each construction progress meeting held by the Operator/Contractor performing actual construction
activities on site.
Full compliance with the SWPPP and implementing regulations as contained in 9VAC25-870 et
seq. and 9VAC25-880 et seq. of the Virginia Administrative Code is required in order to fulfill the
Contract requirements and shall be considered incidental to the total contract value.
wow
8.1 Transfer Agreement
..� Not Applicable.
SECTION 9: CERTIFICATION
"I certify under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations."
Owner/Operator Name: Warren Wilczynski
.4110
Company: Michael Baker International, Inc.
Title: Technical Specialist (RLD#36021)
Signature: G3 MGA
Date: March 8,2016
Dunlora Interconnect Project Page 17
IMP Storm Water Pollution Prevention Plan—January 2016
SECTION 10: DESIGNATION OF AUTHORITY
I, (name), hereby designate the person or
specifically described position below to be a duly authorized representative for the purpose of
overseeing compliance with environmental requirements, including the Construction General
Permit,at the DUNLORA INTERCONNECT construction site. The designee is authorized to sign
any reports, stormwater pollution prevention plans and all other documents required by the permit.
(name of person or position)
.�e
(company)
(address)
(city, state,zip)
(phone)
By signing this authorization, I confirm that I meet the requirements to make such a designation as
set forth in the Construction General Permit(CGP),and that the designee above meets the definition
of a"duly authorized representative".
Owner/Operator Name:
Company:
Title:
Signature: .rr
Date:
erli
wri
Dunlora Interconnect Project Page 18
Storm Water Pollution Prevention Plan—January 2016 +�r'
SECTION 11: EROSION AND SEDIMENT CONTROL PLAN
owe
41110
r.
sow
ems
two
ago
test
Dunlora Interconnect Project Page 19
Storm Water Pollution Prevention Plan—January 2016
SECTION 12: INSPECTION REPORT
MOW
MIS
INS
110111
woo
IMO
Dunlora Interconnect Project Page 20
Storm Water Pollution Prevention Plan—January 2016
POLLUTANT PREVENTION MEASURES
INSPECTION REPORT
Dunlora Interconnect
Project Number 2010-06
Inspection Date/Time Inspector Name
Inspecting Company Name Inspector Title
Reason for Inspection: 0 Regular Inspection ❑ Pre-Rainfall Inspection
0 Re-Inspection 0 Post-Rainfall Inspection
WIN
Has a sediment discharge occurred since the last inspection? 0 Yes 0 No
Are the pollutant control measures in compliance with E&S regulations? 0 Yes 0 No
Check only one box for each item listed below:
(Check "N/A"only if the item does not apply to this project)
Item Description In Compliance at the Time of Inspection
SWPPP located on-site ❑ Yes ❑ No ❑ N/A
(contains all E&S control updates
Construction Entrances 0 Yes 0 No 0 N/A
#4.111Sediment Barriers 0 Yes 0 No 0 N/A
.. .................................. ...............................
Storage/Disposal Areas 0 Yes 0 No 0 N/A
Sediment Traps 0 Yes 0 No 0 N/A
Check Dams 0 Yes 0 No 0 N/A
Inlet Protection 0 Yes 0 No 0 N/A
Tree Protection 0 Yes 0 No 0 N/A
Silt or Super Silt Fence 0 Yes 0 No 0 N/A
`" Diversion Dikes 0 Yes 0 No 0 N/A
Stockpile Stabilization 0 Yes 0 No 0 N/A
,.. Temporary Stabilization of Denuded ❑ yes 0 No 0 N/A
Areas
Is Temporary Stabilization Adequate 0 Yes 0 No 0 N/A
Permanent Stabilization of Denuded
0 Yes 0 No 0 N/A
Areas
Dunlora Interconnect Project Page 21
Storm Water Pollution Prevention Plan—January 2016
>i
tili
Item Description(continued) In Compliance at the Time of Inspection
1
Is Permanent Stabilization Adequate 0 Yes 0 No 0 N/Aii
................................................. ...................._......
Turbidity Curtains 0 Yes 0 No 0 N/A
Public Roads Free of Dust and Debris 0 Yes ❑ No 0 N/A
wii
Removal of Accumulated Sediment 0 Yes 0 No 0 N/A
Discharge Points Free of Sediment i
Deposits at Receiving Waters ❑ Yes 0 No 0 N/A1i
�
Site Free of Trash/Litter 0 Yes 0 No 0 N/A
Site Free of Spills, Leaks or Other ❑ yes 0 No 0 N/A ali
Harmful Materials
............................... .. ........................
Dumpsters Secured and Covered 0 Yes 0 No 0 N/A
Natural Resources Protected 0 Yes 0 No 0 N/A w
......................................... .........................
Temporary Fuel Tanks Secured and ❑ yes 0 No 0 N/A
Contained
x
Wash Facilities Maintained 0 Yes 0 No 0 N/A rri
Sanitary Facilities Maintained 0 Yes 0 No 0 N/A
Dewatering Devices 0 Yes 0 No 0 N/A r
.........................................................................................
Removal of Pollutant Control Measures ❑ yes ❑ No ❑ N/A
Which Are No Longer Required
Repair of Defective, Damaged or Failing 0 Yes 0 No 0 N/A 'I
Pollutant Control Measures
. ............................... ............
VSMP Permit Letter and SWPPP
0 Yes 0 No 0 N/A
Location Information Displayed wi:
Other:
................. . .........................
❑ Yes ❑ No ❑ N/A :
wi
❑ Yes ❑ No ❑ N/A
. ................................ ............................
❑ Yes 0 No 0 N/A
wry
Are additional sheets attached as a part of this Inspection Report? 0 Yes 0 No
(Provide additional sheets as required for documentation)
sit
CORRECTIVE ACTIONS TO BE TAKEN: 0 Yes 0 No
(Explain all Item Descriptions above checked"No", attach additional sheets as necessary) 4
Ili
I
wry
ilii
ori
alli
Dunlora Interconnect Project Page 22 `
Storm Water Pollution Prevention Plan—January 2016 viii
SECTION 13: CONSTRUCTION GENERAL PERMIT (VAR10)
um
Not Applicable.
wo
Coverage under the General VDPES Permit is not required per comments received from the Albemarle
County Department of Community Development review comments dated January 7, 2016 provided the
work is performed in accordance with the Commonwealth of Virginia, Department of Environmental
sim Quality, Water Division's Guidance Memo No. 15-2003 entitled "Postdevelopment Stormwater
Management Implementation Guidance for Linear Utility Projects under the Virginia Stormwater
Management Program Regulation,9VAC25-870", dated April 23, 2015.
449
Refer to Section 2 for a complete copy of the referenced Guidance Memo.
WM
404
1011
ION
OM
OM
OM
10101
10011
000.
Nal
404
WWI
Dunlora Interconnect Project Page 23
.NN Storm Water Pollution Prevention Plan—January 2016