HomeMy WebLinkAboutWPO201700076 VSMP - SWPPP 2018-03-12Al
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, North Wing
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Charlottesville, Virginia 22902-45%
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Tel. (434) 296-5832 • Fax (434) 972-4126
Stormwater Pollution Prevention Plan (SWPPP)
For Construction Activities At:
Project Name: UVAF Temporary Golf Course Connector Road, WP0201700076
Address:
410 Golf Course Drive
Charlottesville, VA 22903
Prepared by:
N'3T„ Dewberry Engineers, Inc.
Prepared for:
n h«,c: Chris Schooley c/o University of Virginia Foundation
SWPPP Preparation Date: March 12, 2018
(This document is to be made publicly available according to 9VAC25-880-70, Part II, section D)
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Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
CONTENTS: (from Albemarle County Code Sec. 17-405)
1. Registration statement
2. Notice of general permit coverage
3. Nature of activity
4. Erosion and Sediment Control Plan.
5. Stormwater Management Plan
6. Pollution Prevention Plan.
7. Discharges to impaired waters, surface waters within an applicable TMDL
wasteload allocation, and exceptional waters.
8. Qualified personnel
9. Signed Certification
10. Delegation of authority.
11. General permit copy
12. Inspection logs
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
Section 1. Registration statement
(Provide a signed completed copy of the DEQ registration statement)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
Registration Statement
General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10)
(Please Type or Print All Information)
1. Construction Activity Operator: (General permit coverage will be issued to this operator. The Certification in Item #12 must be
signed by the appropriate person associated with this operator.)
Name: University of Virginia Foundation
Contact: Chris Schooley
Mailing Address: PO BOX 400218
city: Charlottesville State:VA zip: 22904 Phone: (434)-989.9752
Email address (if available): cds7c@virginia.edu
Indicate if DEQ may transmit general permit correspondence electronically: Yes ® No ❑
2. Existing General Permit Registration Number (for renewals only):
3. Name and Location of the Construction Activity:
Name: Temporary Golf Course Connector Road
Address (if available): From Golf Course Drive to Berwick Drive
City: State: VA Zip: 22903
County (if not located within a city)Albemarle Count
Latitude (decimal degrees): 38.0467 Longitude (decimal degrees): -78.5381
Name and Location of all Off-site Support Activities to be covered under the general permit:
Name:
Address (if available):
City: State: zip:
County (if not located within a City):
Latitude (decimal degrees): Longitude (decimal degrees):
4. Status of the Construction Activity (check only one): Federal ❑ State ❑ Public ❑ Private
5. Nature of the Construction Activity (e.g., commercial, industrial, residential, agricultural, oil and gas, etc.):
Commercial
6. Name of the Receiving Water(s) and Hydrologic Unit Code (HUC):
Name:MOOreS Creek Name:
HUC: JR15 HUC:
7. If the discharge is through a Municipal Separate Storm Sewer System (MS4), the name of the MS4 operator:
& Estimated Project Start and Completion Date:
Start Date (mm/dd/yyyy): 04/01 /2018 Completion Date (mm/dd/yyyy): 07/31/2018
9. Total Land Area of Development (to the nearest one-hundredth acre): 2.10 acres
Estimated Area to be Disturbed (to the nearest one-hundredth acre): 2.10 acres
10. Is the area to be disturbed part of a larger common plan of development or sale? Yes ❑ NoFX]
11. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General
VPDES Permit for Discharges of Stormwater from Construction Activitiesrip or to submitting this Registration Statement.
By signing this Registration Statement the operator is certifying that the SWPPP has been prepared.
12. Certification: "I certify under penalty of law that I have read and understand this Registration Statement and that this document
and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and
evaluated the information ibmi d. i3ased on my inquiry of the person or persons who manage the system or those persons
directly responsibleforor
eri theinformation, the information submitted is to the best of my knowledge and belief true,
accurate, and complet are that t ere re significant penalties for submitting false information including the possibility of
fine and imprisonmentno n iolatio s." 'd-'
Printed Name: Title: U WX I
AA_
Signature: D ✓t Ci "eo Date: (t
(Please sign in INK. This Certification must be igned by the appropriate person associated with i6e operator identified in
Item #1.)
07/2014 Page 1 of 1
Instructions for Completing the Registration Statement
General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10)
GENERAL
A. Coverage Under this General Permit.
Any operator applying for coverage under this general permit who is
required to submit a Registration Statement (see Section B below)
must submit a complete Registration Statement to the Department.
The Registration Statement serves as a Notice of Intent for coverage
under the General VPDES Permit for Discharges of Stormwater from
Construction Activities (VAR10).
B. Single-family Detached Residential Structures.
Operators with an existing stormwater discharge or proposing a new
stormwator discharge associated with the construction of a single-
family detached residential structure are not required to submit a
Registration Statement or the Department of Environmental Quality
(DEQ) portion of the general permit fee.
Operators of these types of discharges are authorized to discharge
under this general permit immediately upon the general permit's
effective date of July 1, 2014.
C. To Apply for Permit Coverage.
I. New Construction Activities. Any operator proposing a new
stormwater discharge from construction activities shall submit a
complete Registration Statement to the Department prior to the
commencement of land disturbance, unless exempted by Section B
above. Any operator proposing a new stormwater discharge from
construction activities in response to a public emergency where the
related work requires immediate authorization to avoid imminent
.endangerment to.human health or the _environment.is immediately
authorized to discharge under this general permit and must submit a
complete Registration Statement to the Department no later than 30
days after commencing land disturbance; documentation to
substantiate the occurrence of the public emergency must
accompany the Registration Statement.
2. Existing Construction Activities. Any operator that was
authorized to discharge under the general permit issued in 2009,
and who intends to continue coverage under this general permit,
shall submit a complete Registration Statement to the Department
on or before June 1, 2014, unless exempted by Section B above.
D. Where to Submit Registration Statements.
All Registration Statements should be submitted to:
Department of Environmental Quality
Office of Stormwater Management, 10"' Floor
P.O. Box 1105
Richmond, VA 23218
LINE -BY-LINE INSTRUCTIONS
Item 1: Construction Activity Operator Information.
"Operator" means the owner or operator of any facility or activity
subject to the Stormwater Management Act and regulations. In the
context of stormwater associated with a large or small construction
activity, operator means any person associated with a construction
project that meets either of the following two criteria: (i) the person has
direct operational control over construction plans and specifications,
including the ability to make modifications to those plans and
specifications or (ii) the person has day-to-day operational control of
those activities at a project that are necessary to ensure compliance
with a stormwater pollution prevention plan for the site or other state
permit or VSMP authority permit conditions (i.e., they are authorized to
direct workers at a site to carry out activities required by the
stormwater pollution prevention plan or comply with other permit
conditions).
The entities that are considered operators will commonly consist of the
owner or developer of a project (the party with control of project plans
and specifications) or the general contractor (the party with day to day
operational control of the activities at the project site which are
necessary to ensure compliance with the general permit).
Provide the legal name (do not use a colloquial name), contact, mailing
address, telephone number, and email address (if available) of the
construction activity operator; general permit coverage will be issued to
this operator. Indicate if the Department may transmit general permit
correspondence electronically.
Item 2: Existing General Permit Registration Number.
For reapplicalions only, provide the existing general permit registration
number for the construction activity. This item does not need to be
completed for new construction activities applying for general permit
coverage.
Item 3: Name and Location of the Construction Activity
Information.
Provide the official name, street address (if available), city or county (if
not located within a City) of the construction activity. Also, provide the
latitude and longitude in decimal degrees of the approximate center of
the construction activity (e.g., N 37.5000, W 77.5000).
Name and Location of Off-site Support Activity Information.
This general permit also authorizes stormwater discharges from
support activities (e.g., concrete or asphalt batch plants, equipment
staging yards, material storage areas, excavated material disposal
.areas,. borrow -areas) located on-site or.off-site provided that (i) the
support activity is directly related to a construction activity that is
required to have general permit coverage; (ii) the support activity is not
a commercial operation, nor does it serve multiple unrelated
construction activities by different operators; (iii) the support activity
does not operate beyond the completion of the construction activity it
supports; (iv) the support activity is identified in the registration
statement at the time of general permit coverage; (v) appropriate
control measures are identified in a SWPPP and implemented to
address the discharges from the support activity areas; and (vi) all
applicable state, federal, and local approvals are obtained for the
support activity.
Provide the official name, street address (if available), City and County
(if not located within a City) of all off-site support activities to be
covered under this general permit. Also, provide the latitude and
longitude in decimal degrees of the approximate center of the off-site
support activities (e.g., N 37.5000, W 77.5000). Also, if an off-site
support activity is going to be covered under this general permit the
total land area of the off-site support activity and the estimated area to
be disturbed by the off-site support activity need to be included in Item
#9.
Item 4: Status of the Construction Activity.
Indicate the appropriate status (Federal, State, Public, or Private) of
the construction activity.
Item 5: Nature of the Construction Activity.
Provide a brief description of the construction activity, such as
commercial, residential, agricultural, oil and gas, etc. This list is not all
inclusive.
Item 6: Receiving Waters(s) and HUC Information.
Provide the name of the receiving water(s) and corresponding HUC for
all stormwater discharges including any stormwater discharges from
off-site support activities to be covered under this general permit.
Hydrologic Unit Code or HUC is a watershed unit established in the
most recent version of Virginia's tar' order national watershed boundary
dataset.
0712014 Page 1 of 2
Item 7: MS4 Information.
If stormwater is discharged through a municipal separate storm sewer
system (MS4), provide the name of the MS4 operator. The name of the
MS4 operator is generally the Town, City, County, institute or Federal
facility where the construction activity is located.
Item 8: Construction Activity Start and Completion Date
Information.
Provide the estimated start date (month/day/year) of the construction
activity. Provide the estimated completion date (month/day/year) of
the construction activity.
Item 9: Construction Activity Area Information.
Provide the total area (to the nearest one-hundredth acre) of the
development (i.e.., the total acreage of the larger common plan of
development or sale). Include the total acreage of any off-site support
activity to be covered under this general permit.
Provide the estimated area (to the nearest one-hundredth acre) to be
disturbed by the construction activity. Include the estimated area of
land disturbance that will occur at any off-site support activity to be
covered under this general permit.
Item 10: Common Plan of Development or Sale Information
Indicate if the area to be disturbed by the construction activity is part of
a larger common plan of development or sale. Larger common plan of
development or sale is defined as a contiguous area where separate
and distinct construction may be taking place at different times on
different schedules. Plan is broadly defined as any announcement or
documentation, including a sign, public notice or hearing, sales pitch,
advertisement, drawing, permit application, zoning request, etc., or
physical. demarcation. such as. boundary signs, tot stakes, or surveyor
markings indicating that construction activities may occur.
Item 11: Stormwater Pollution Prevention Plan (SWPPP).
A Stormwater Pollution Prevention Plan (SWPPP) must be prepared in
accordance with the requirements of the General VPDES Permit for
Discharges of Stormwater from Construction Activities (VAR10) prior to
submitting this Registration Statement. By signing this Registration
Statement the operator is certifying that the SWPPP has been
prepared.
Item 12: Certification.
A properly authorized individual associated with the operator identified
in Item 1 of the Registration Statement is responsible for certifying and
signing the Registration Statement. Please sign the Registration
Statement in INK.
State statutes provide for severe penalties for submitting false
information on the Registration Statement. State regulations require
that the Registration Statement be signed as follows:
a. For a corporation: by a responsible corporate officer. For the
purpose of this part, a responsible corporate officer means:
(i) A president, secretary, treasurer, or vice-president of the
corporation in charge of a principal business function, or any other
person who performs similar policy-making or decision-making
functions for the corporation, or
(ii) the manager of one or more manufacturing, production, or
operating facilities, provided the manager is authorized to make
management decisions that govern the operation of the regulated
facility including having the explicit or implicit duty of making major
capital investment recommendations, and initiating and directing
other comprehensive measures to assure long-term compliance
with environmental laws and regulations; the manager can ensure
that the necessary systems are established or actions taken to
gather complete and accurate information for permit application
requirements; and where authority to sign documents has been
assigned or delegated to the manager in accordance with
corporate procedures.
b. For a partnership or sole proprietorship: by a general partner or
the proprietor, respectively.
c. For a municipality, state, federal, or other public agency: by either
a principal executive officer or ranking elected official. For purposes
of this part, a principal executive officer of a public agency includes:
(t) The chief executive officer of the agency, or
(ii) A senior executive officer having responsibility for the overall
operations of a principal geographic unit of the agency.
07/2014
Page 2 of 2
Section 2. Notice of general permit coverage
(This notice is to be posted near the main entrance according to 9VAC25-880-70, Part 11, section
C.) (Provide a copy of the DEQ coverage letter when obtained)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
Section 3. Nature of activity
(Provide a detailed narrative of the construction activities. Include or reference a construction schedule and
sequence. Include any phasing.)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
Section 4. Erosion and Sediment Control Plan.
(Provide a reduced, I Ix17 copy of the latest Erosion and Sediment Control Plan. Do not reference only.)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
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EROSION & SEDIMENT CONTROL NARRATIVE
PROJECT DESCRIPTION
THIS PROJECT INCLUDES ROADWAY CONSTRUCTION TO CONNECT GOLF COURSE DRIVE TO BERWICK DRIVE TO PROVIDE ACCESS BETWEEN THE
BIRDWOOD GOLF COURSE AND THE BOARS HEAD INN. CONSTRUCTIONA ACTIVITIES INCLUDE EARTHWORK, PAVEMENT, STROMWATER MANAGEMENT,
CULVERT AND STORM SEWER INSTALLATION.
THE PROJECT AREA IS APPROXIMATELY 2.10 ACRES AND WILL DISTURB APPROXIMATELY 2.10 ACRES. 0.22 ACRES OF IMPERVIOUS AREA IS
BEING ADDED.
EXISTING SITE CONDITIONS
THE EXISTING SITE CONSISTS OF BERWICK ROAD, GOLF COURSE DRIVE, GOLF CART PATHS AND THE BIROWOOD GOLF COURSE. THE EXISTING
SITE ALSO CONSISTS OF TREES AND GRASSY AREAS.
SOILS
SEE SHEET C2.03 FOR SOILS MAP. CONTRACTOR SHALL BE RESPONSIBLE FOR TESTING, EROSION AND SEDIMENT CONTROL, MAINTENANCE, AND
STABILIZATION OF SOILS DURING CONSTRUCTION.
ADJACENT PROPERTY
THE EXISTING SITE IS SOUTH OF ROUTE 250, EAST OF EDNAM VILLAGE ST, AND NORTH OF THE UVA SQUASH FACILITY. NO WORK WILL BE
DONE ON ADJACENT PROPERTIES.
OFFSITE ACTIVITIES
ALL OFFSITE ACTIVITIES NEED TO BE ADDRESSED BY THE VSMP PERMIT HOLDER AND APPROPRIATE INFORMATION CONTAINED IN THE SWPPP.
CONTRACTOR SHALL ONLY PERFORM OFFSITE ACTIVITIES THAT ARE COVERED UNDER THE PERMIT HOLDER FOR THIS PROJECT OR COVERED
UNDER THE PERMIT OF ANOTHER PROJECT.
STORMWATER RUNOFF CONSIDERATIONS
THIS PROJECT WILL INCREASE IMPERVIOUS AREA AND STORMWATER RUNOFF. STORMWATER CALCULATIONS CAN BE FOUND IN THE STORM WATER
PLANS, SHEETS C9.01-129.10.
CRITICAL AREAS
THERE ARE EXISTING AREAS OF STEEP SLOPES ON SITE. PLEASE REFER TO THE EXISTING SITE CONDITIONS (C1.01) FOR LOCATIONS OF STEEP
SLOPES. THE PLAN HAS BEEN DEVELOPED TO MINIMIZE LAND DISTURBANCE. WHERE GRADING IS NECESSARY, ADEQUATE PRECAUTIONS SHALL
BE TAKEN TO MINIMIZE EROSION AND TO CONTAIN SILT THROUGH PROPER EROSION AND SEDIMENT CONTROL PRACTICES.
THE INTENT OF THIS EROSION AND SEDIMENT CONTROL PLAN IS TO GUIDE THE CONTRACTOR IN IMPLEMENTING ACCEPTABLE MEASURES,
INFRASTRUCTURE, AND MAINTENANCE PROGRAMS THAT WILL MINIMIZE THE AMOUNT OF EROSION AND RESULTING SEDIMENT THAT WILL TAKE
PLACE DURING THE CONSTRUCTION OF THIS PROJECT. ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE
CONSTRUCTED AND MAINTAINED ACCORDING TO THE MINIMUM STANDARDS AND SPECIFICATIONS OF THE VA EROSION & SEDIMENT CONTROL
HANDBOOK.
EROSION AND SEDIMENT CONTROL MEASURES
STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES
SAFETY FENCE (VESCH STD. & SPEC. 3.01):
A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. SAFETY
FENCE PROHIBITS THE UNDESIREABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC. FOR USE
IN AREAS POTENTIALY UNSAFE FOR THE PUBLIC.
CONSTRUCTION ENTRANCE (VESCH STD. & SPEC. 3.02):
STABILIZED STONE PAD WITH A FILTER FABRIC UNDERLINER LOCATED AT POINTS OF VEHICULAR INGRESS
AND EGRESS. CONSTRUCTION ENTRANCES REDUCE THE AMOUNT OF MUD TRANSPORT ONTO PAVED PUBLIC
ROADS BY VEHICLES OR RUNOFF. CONSTRUCTION ENTRANCES SHALL BE LIMITED TO THOSE SHOWN ON
THE PLANS OR OTHERWISE APPROVED BY THE SOIL EROSION OFFICER. SUPPLEMENTAL DRAWINGS SHALL
BE PROVIDED BY THE CONTRACTOR FOR APPROVAL IF ADDITIONAL ENTRANCES ARE REQUIRED.
SILT FENCE (VESCH STD. & SPEC. 3.05):
A TEMPORARY SEDIMENT BARRIER CONSISTING OF A FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO
SUPPORTING POSTS AND ENTRENCHED. SILT FENCE IS INSTALLED TO INTERCEPT AND DETAIN SMALL
AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION IN ORDER TO PREVENT SEDIMENT
FROM LEAVING THE SITE AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOw-TO-MODERATE
CHANNEL FLOWS.
STORM DRAIN INLET PROTECTION (VESCH STD. & SPEC. 3.07):
A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB
INLET. STORM DRAIN INLET PROTECTION PREVENTS SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS
PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA FOR USE WHERE STORM DRAIN INLETS ARE
TO BE MADE OPERATIONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DISTURBED
DRAINAGE AREA. DIFFERENT TYPES OF STRUCTURES ARE APPLICABLE TO DIFFERENT CONDITIONS.
TEMPORARY SEEDING (VESCH STD. & SPEC. 3.31):
THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING WITH
APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TEMPORARY SEEDING REDUCES EROSION AND
SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A
PERIOD OF MORE THAN 14 DAYS. TEMPORARY SEEDING REDUCES DAMAGE FROM SEDIMENT AND RUNOFF
TO DOWNSTREAM OR OFF-SITE AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS EXPOSED DURING
CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL MEASURES CAN BE
ESTABLISHED. FOR USE WHERE EXPOSED SOIL SURFACES ARE NOT TO BE FINE -GRADED FOR PERIODS OF
LONGER THAN 14 DAYS. SUCH AREAS INCLUDED DENUDED AREAS, SOIL STOCKPILES, DIKES, DAMS, SIDES
OF SEDIMENT BASINS, TEMPORARY ROADBANKS, ETC. (SEE MSNI AND MSN2). A PERMANENT VEGETATIVE
COVER SHALL BE APPLIED TO AREAS THAT WILL BE LEFT DORMANT FOR A PERIOD OF MORE THAN ONE
(1) YEAR.
PERMANENT SEEDING (VESCH STD. & SPEC. 3.32):
THE ESTABLISHMENT OF A PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING SEED.
PERMANENT SEEDING REDUCES EROSION AND DECREASES SEDIMENT YIELD FROM DISTURBED AREAS.
PERMANENT SEEDING STABILIZES DISTURBED AREAS IN A MANNER THAT IS ECONOMICAL, ADAPTABLE TO
SITE CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT MATERIAL. PERMANENT
SEEDING ALSO IMPROVES WILDLIFE HABITAT AND ENHANCES NATURAL BEAUTY. FOR USE IN DISTURBED
AREAS WHERE PERMANENT, LONG -LVED VEGETATIVE COVER IS NEEDED TO STABILIZE THE SOIL. FOR USE
WHERE ROUGH -GRADED AREAS WHICH WILL NOT BE BROUGHT TO FINAL GRADE FOR A YEAR OR MORE.
MULCHING (VESCH STD. & SPEC. 3.35):
APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE. MULCHING
PREVENTS EROSION BY PROTECTING THE SOIL SURFACE FROM RAINDROP IMPACT AND REDUCING THE
VELOCITY OF OVERLAND FLOW. MULCHING FOSTERS THE GROWTH OF VEGETATION BY INCREASING AVAILABLE
MOISTURE AND PROVIDING INSULATION AGAINST EXTREME HEAT AND COLD. FOR USE IN AREAS WHICH HAVE
BEEN PERMANENTLY SEEDED. MULCHING SHOULD OCCUR IMMEDIATELY FOLLOWING SEEDING. AREAS THAT
CANNOT BE SEEDED BECAUSE OF THE SEASON SHOULD BE MULCHED WITH AN ORGANIC MULCH.
DUST CONTROL (VESCH STD. & SPEC. 3.39)
APPLICATION OF TEMPORARY SEEDING (VESCH & SPEC. 3.31), MULCHING (VESCH STD. & SPEC. 3.35),
IRRIGATION, SPRAY -ON ADHESIVES OR BARRIERS TO PREVENT SURFACE AND AIR MOVEMENT OF DUST
FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY
PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE DURING LAND
DISTURBING, DEMOLITION AND CONSTRUCTION ACTIVITIES.
TEMPORARY ANQ PERMANENT STABILIZATION
TEMPORARY SEEDING SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE, BUT WILL REMAIN
DORMANT FOR LONGER THAN 14 DAYS AND LESS THAN ONE YEAR. THIS INCLUDES, BUT IS NOT LIMITED TO, STOCKPILES AND BORROW
AREAS.
PERMANENT SEEDING SHALL BE APPLIED AND A PERENNIAL VEGETATIVE COVERING SHALL BE ESTABLISHED ON DISTURBED AREAS WITHIN SEVEN
DAYS OF BEING BROUGHT TO FINAL GRADE ON AREAS NOT OTHERWISE PROTECTED. SELECTION OF THE SEED MIXTURE SHALL DEPEND ON
THE TIME OF YEAR IT IS TO BE APPLIED.
MULCHING SHALL BE APPLIED TO ALL PERMANENT SEEDING IMMEDIATELY UPON COMPLETION OF SEED APPLICATION. MULCH LIBERALLY DURING
THE MID -SUMMER AND WINTER SEASONS.
SEE VIRGINIA EROSION AND SEDIMENT CONTROL TECHNICAL BULLETIN NO. 4, NUTRIENT MANAGEMENT FOR DEVELOPMENT SITES, FOR UPDATED
SEED MI FURIES AND SCHEDULES AS WELL AS UPDATED LIMING, MULCHING, AND FERTILIZING REQUIREMENTS. SEE VIRGINIA EROSION AND
SEDIMENT CONTROL HANDBOOK STD. AND SPEC. 3.35 FOR MULCHING SPECIFICATIONS.
PERMIT
PROJECT DISTURBANCE IS MORE THAN 1 ACRE. THEREFORE, THE CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING A VIRGINIA STORMWATER
MANAGEMENT PROGRAM (VSMP) PERMIT AND MAINTAINING A STORMWATER POLLUTION PREVENTION PLAN (SWPPP).
THE PROJECT IS MORE THAN 10,000 SF AND WILL REQUIRE EROSION AND SEDIMENT REVIEW APPROVAL
EROSION & SEDIMENT CONTROL MAINTENANCE
IN GENERAL, THE PROJECT AREA SHALL BE CHECKED WITHIN 24 HOURS OF EACH RAINFALL EVENT OR WEEKLY IF NO RAINFALL EVENT HAS OCCURED, WHICH
EVER IS MORE FREQUENT TO ENSURE THAT ALL EROSION AND SEDIMENT CONTROL DEVICES ARE IN WORKING ORDER. EROSION CONTROL DEVICES SHALL BE
MAINTAINED ACCORDING TO THE FOLLOWING SCHEDULE:
1. SAFETY FENCE
SAFETY FENCE SHALL BE CHECKED REGULARLY FOR WEATHER-RELATED OR OTHER DAMAGE. ANY NECESSARY REPAIRS MUST BE MADE
IMMEDIATELY. CARE SHOULD BE TAKEN TO SECURE ALL ACCESS POINTS (GATES) AT THE END OF EACH WORK DAY. ALL LOCKING DEVICES
MUST BE REPAIRED OR REPLACED AS NECESSARY.
2. CONSTRUCTION ENTRANCE
THE ENTRANCE SHALL BE MAINTAINED IN CONDITION WHICH WILL PREVENT TRACKING OR FLOW OF MUD ONTO PUBLIC RIGHT-OF-WAY. THIS
MAY REQUIRE PERIODIC TOP DRESSING WITH ADDITIONAL STONE DR THE WASHING AND REWORKING OF EXISTING STONE AS CONDITIONS
DEMAND AND REPAIR AND/OR CLEANOUT OF ANY STRUCTURES USED TO TRAP SEDIMENT. ALL MATERIALS SPILLED. DROPPED. WASHED
OR TRACKED FROM VEHICLES ONTO ROADWAYS OR INTO STORM DRAINS MUST BE REMOVED IMMEDIATELY. THE USE OF WATER TRUCKS TO
REMOVE MATERIALS DROPPED, WASHED OR TRACKED ONTO ROADWAYS WILL NOT BE PERMITTED UNDER ANY CIRCUMSTANCES.
3. SILT FENCE
A SEDIMENT DEPOSITS SHALL BE REMOVED WHEN DEPOSITS REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE BARRIER.
B. FABRIC SHALL BE REPLACED IF IT HAS DECOMPOSED OR BECOME INEFFECTIVE.
4. SEEDING
THE SEEDED AREAS SHALL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND
RESEEDED AS NEEDED.
5. STORM DRAIN INLET PROTECTION
SEDIMENT DEPOSITS SHALL BE REMOVED WHEN DEPOSITS REACH APPROXIMATELY ONE-HALF THE DESIGN DEPTH OF THE TRAP.
6. TEMPORARY SEDIMENT TRAP
A. SEDIMENT SHALL BE REMOVED AND THE TRAP RESTORED TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE
HALF THE DESIGN VOLUME OF THE WET STORAGE. SEDIMENT REMOVAL FROM THE BASIN SHALL BE DEPOSITED IN A
SUITABLE AREA AND IN SUCH A MANNER THAT IT WILL NOT ERODE AND CAUSE SEDIMENTATION PROBLEMS.
B. FILTER STONE SHALL BE REGULARLY CHECKED TO ENSURE THAT FILTRATION PERFORMANCE IS MAINTAINED. STONE CHOKED WITH SEDIMENT
SHALL BE REMOVED AND CLEANED OR REPLACED.
C. THE STRUCTURE SHOULD BE CHECKED REGULARLY TD ENSURE THAT IT IS STRUCTURALLY SOUND AND HAS NOT BEEN DAMAGED BY
EROSION OR CONSTRUCTION EQUIPMENT. THE HEIGHT OF THE STONE OUTLET SHOULD BE CHECKED TO ENSURE THAT ITS
CENTER IS AT LEAST I FOOT BELOW THE TOP OF THE EMBANKMENT.
7. DUST CONTROL
IN PLANNING AND MAINTENANCE FOR DUST CONTROL, LIMITING THE AMOUNT OF SOIL DISTURBANCE AT ANY ONE TIME SHOULD BE A KEY
OBJECTIVE. TEMPORARY STABILIZATION MEASURES SHALL BE CHECKED REGULARLY AND RE-APPLIED AS NECESSERY TO REDUCE DUST
EMISSIONS.
THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING AN EMPLOYEE WHO WILL BE RESPONSIBLE OF THE EROSION AND SEDIMENT CONTROL PLAN AND
REQUIREMENTS FOR THE PROJECT THAT IS CERTIFIED BY THE VIRGINIA DEPARTMENT OF CONSERVATION OR THE VIRGINIA DEPARTMENT OF
ENVIRONMENTAL QUALITY AND RECREATION AS A RESPONSIBLE LAND DISTURBER (RED). THE NAME OF THE CONTRACTORS RED AND COPY OF
HIS CURRENT CERTIFICATION SHALL BE PROVIDED TO THE OWNER, ENGINEER AND EROSION & SEDIMENT CONTROL PLAN APPROVING
AUTHORITY PRIOR TO ISSUANCE TO THE NOTICE TO PROCEED FOR THE PROJECT.
GENERAL EROSION & SEDIMENT CONTROL NOTES
ES -1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND
MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND THE
VIRGINIA EROSION AND SEDIMENT CONTROL REGULATIONS (9VAC25-840).
ES -2: THE PLAN -APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE-CONSTRUCTIDN CONFERENCE, ONE WEEK PRIOR TO THE
COMMENCEMENT OF LAND DISTURBING ACTIVITYAND ONE WEEK PRIOR TO THE FINAL INSPECTION. THE NAME OF THE RESPONSIBLE LAND DISTURBER
MUST BE PROVIDED TO THE PLAN -APPROVING AUTHORITY PRIOR TO ACTUAL ENGAGEMENT IN THE LANG -DISTURBING ACTIVITY SHOWN ON THE
APPROVED PLAN. IF THE NAME IS NOT PROVIDED PRIOR TO ENGAGING IN THE LAND -DISTURBING ACTIVITY, THE PLAN'S APPROVAL WILL BE REVOKED.
ES -3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING.
ES -4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES.
ES -5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF-SITE
BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND
APPROVAL BY THE PLAN -APPROVING AUTHORITY.
ES -6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND
SEDIMENTATION AS DETERMINED BY THE PLAN -APPROVING AUTHORITY.
ES -7: ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING
SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED, AFTER WHICH, UPON APPROVAL OF THE PLAN -APPROVING AUTHORITY, THE CONTROLS
SHALL BE REMOVED. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE REMOVAL OF TEMPORARY MEASURES SHALL BE
PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION.
ES -8: DURING DEWATERING OPERATIONS, WATER SHALL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
ES -9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES AT LEAST AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT OR WEEKLY. ANY
NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY.
ES -10: THE CONTRACTOR IS RESPONSIBLE FOR THE DAILY REMOVAL OF SEDIMENT THAT HAS BEEN TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE.
ES -11: SEEDING OPERATIONS SHALL BE INITIATED WITHIN 7 DAYS AFTER REACHING FINAL GRADE OR UPON SUSPENSION OF GRADING OPERATIONS FOR
ANTICIPATED DURATION OF GREATER THAN 14 DAYS OR UPON COMPLETION OF GRADING OPERATIONS FOR A SPECIFIC AREA
ES -12: THE CONTRACTOR SHALL BE RESPONSIBLE FOR PREVENTING SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOILS WHICH MAY PRESENT
HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS, OR HARM ANIMAL OR PLANT LIFE.
ES -13: A VIRGINIA STORMWATER MANAGEMENT PROGRAM PERMIT (VSMPP) FOR THE DISCHARGE OF STORMWATER FROM CONSTRUCTION ACTIVITIES IS REQUIRED
FOR PROJECTS DISTURBING I ACRE OR GREATER. VISIT THE VIRGINIA STORMWATER MANAGEMENT PROGRAM PERMITTING WEB PAGE AT
HTTP- //WWW.DEO.STATE.VAUS /PROGRAMS /WATER /STORMWATERMANAGEMENT/VSMPPERMITS/CONSTRUCTIONGENERALPERMIT.ASPX FOR MORE INFORMATION.
EROSION AND SEDIMENT MINIMUM STANDARDS
I. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY
PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL
GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT
DORMANT FOR MORE THAN ONE YEAR. SPECIFIC FERTILIZER, NUTRIENT, & SEED APPLICATION MUST MEET EROSION AND SEDIMENT CONTROL (ESC)
TECHNICAL BULLETIN NO. 4 NUTRIENT MANAGEMENT FOR DEVELOPMENT PROJECTS. DOWNLOAD AT
http://www.deq.vi,gi,io.gov/P,og,o,s/Water/Sto,,wote,Management/P,blicotio,s.osp.l. MULCHING REQUIREMENTS MUST MEET VESC HANDBOOK
MULCHING TABLE 3.35A.
2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING
MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS
WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. ANY BORROW, FILL, OR WASTE SUCH AS DEMOLITION MATERIAL
MUST BE PROVIDED FROM OR HAULED TO A PERMITTED, APPROVED, SUPPLY OR WASTE AREA. ALL OFFSITE ACTIVITY IS NOT PART OF THIS PERMIT/ PLAN
SET AND IS ADDRESSED UNDER SEPARATE COVER. SOIL STOCKPILES ARE NOT ANTICIPATED ONSITE.
3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL
NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION.
4, SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS
A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION.
6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP
OR BASIN.
A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY
CONTROL DRAINAGE AREAS LESS THAN THREE ACRES.
B. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES
SHALL BE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF
DRAINAGE AREA THE OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A 25 -YEAR STORM OF
24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE
CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED.
7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING
EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS
CORRECTED.
A
EROSION AND SEDIMENT MINIMUM STANDARDS
8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL,
FLUME OR SLOPE DRAIN STRUCTURE.
9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED.
10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER
THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT.
11. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY
REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL.
12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND
STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION
DF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE
13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY VEHICULAR
STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIAL SHALL BE PROVIDED.
14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET.
15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED.
16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA-
A,
RITERIAA NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME.
B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES.
C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND
DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF-SITE PROPERTY.
D. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION.
E.RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS.
F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH.
17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF
SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ROAD
SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING
AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER.
THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES.
18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE
TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE REGULATORY AUTHORITY. TRAPPED SEDIMENT AND THE
DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION
AND SEDIMENTATION.
19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO
INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN
ACCORDANCE WITH THE STANDARDS AND CRITERIA FOUND IN VESC REGULATION 94VAC25-840-40 MS -19 PARTS A -N FOUND AT WEBPAGE
HTTP I VIRGIN
+R + V 4 4
EROSION AND SEDIMENT CONTROL SEQUENCE
1. CONTRACTOR TO INSTALL EROSION AND SEDIMENT PHASE I CONTROLS.
2. CONTRACTOR TO COMPLETE DEMOLITION.
3. CONTRACTOR TO COMPLETE SITE IMPROVEMENTS.
4. CONTRACTOR TO REMOVE APPROPRIATE TEMPORARY EROSION AND SEDIMENT PHASE I CONTROLS.
5. CONTRACTOR TO INSTALL EROSION AND SEDIMENT PHASE II CONTROLS.
6. CONTRACTOR TO STABILIZE SITE.
7. CONTRACTOR TO REMOVE ALL TEMPORARY EROSION AND SEDIMENT CONTROLS.
8. ALL BIORETENTION AREAS SHALL BE PROTECTED FROM SOIL LADEN RUNOFF. CONTRACTOR SHALL BEGIN CONSTRUCTION OF THE
BIORETENTION AREAS ONLY ONCE ALL UPSTREAM AREAS OF THE SITE HAVE BEEN FULLY STABILIZED.
BIORETENTION INSTALLATION NOTES:
1. STABILIZE ENTIRE CONTRIBUTING DRAINAGE AREA WITH VEGETATION. BLOCK INLETS AS NECESSARY. ENSURE NO UTILITIES SHALL
INTERFERE WITH THE INSTALLATION.
2. HOLD A PRECONSTRUCTION MEETING WITH THE ENGINEER, OWNER AND CONTRACTOR. ANY CHANGES DURING THIS MEETING SHALL BE
DOCUMENTED AS PART OF THE AS -BUILT SUBMISSION OF THE FACILITY.
3. EMPLOY EROSION AND SEDIMENT CONTROLS AS NECESSARY TO DIVERT STORMWATER AWAY FROM THE BIORETENETION FACILITY UNTIL
INSTALLATION IS COMPLETE.
4. EXCAVATE PRE-TREATMENT CELLS FIRST, AND SEAL THEM TO TRAP SEDIMENT.
5. WHEN POSSIBLE, UTILIZE EXCAVATORS AND BACKHOES FROM THE SIDES OF THE BIORETENTION AREA TO AVOID COMPACTING OF
SUBGRADE AND TO ENSURE APPROPRIATE DESIGN DEPTH AND DIMENSIONS.
6. RIP THE SUBGRADE SOILS 6"-12" TO PROMOTE GREATER INFILTRATION.
7. PLACE A GEOTEXTILE FABRIC ON THE VERTICAL SIDES OF THE BIORETENTION CELL WITH A 6" OVERLAP BETWEEN FABRIC EDGES.
PLACE THE BOTTOM STORAGE LAYER. INSTALL THE UNDERDRAIN. PACK THE STONE. ADD CHOKER LAYER ABOVE.
8. APPLY THE BIOFILTER SOIL MEDIA FROM A QUALIFIED VENDOR IN 12" LIFTS TO THE DESIRED ELEVATION OF THE BIORETENTION.
ALLOW FOR A FEW DAYS OF SETTLEMENT, THEN ADD ADDITIONAL SOIL MEDIA TO DESIRED ELEVATION. ENSURE SOIL MEDIA IS KEPT AWAY
FROM POTENTIAL POLLUTANTS INCLUDING SEDIMENT.
9. PREPARE PLANTING HOLES AND WATER ACCORDINGLY.
10. PLACE THE SURFACE COVER OF THE CELLS PER THE DESIGN.
11. INSTALL THE PLANT MATERIAL AND WATER PER THE LANDSCAPING PLAN.
BMP INSTALLATION AND AS -BUILT NOTES
1. CONTRACTOR TO PROVIDE DETAILED INFORMATION ON ANY INSTALLED STORMWATER BMP. THIS INFORMATION SHALL INCLUDE A TOPOGRAPHIC
SURVEY OF THE INSTALLATION, GPS COORDINATES FOR EACH FACILITY, PHOTOGRAPHS OF THE PROGRESS THROUGHOUT CONSTRUCTION
INCLUDING EACH MILESTONE, CONSTRUCTION LOGS, GEOTECHNICAL TESTING REPORTS, AND SOIL REPORT CERTIFICATIONS. THIS INFORMATION
TO BE TURNED OVER TO THE OWNER AS A SUBMITTAL FOLLOWING CONSTRUCTION OF THE PROJECT.
2. THE ENGINEER SHALL BE NOTIFIED OF ANY DEVIATIONS FROM THE PLANS IMMEDIATELY. IF A DEVIATION IS REQUIRED, CONTRACTOR AND
ENGINEER SHALL COORDINATE A SOLUTION THAT IS ACCEPTABLE WITHIN THE DED REGULATIONS.
3. CONTRACTOR SHALL PROTECT BMP FROM ANY DUST OR DEBRIS THROUGHOUT CONSTRUCTION, INCLUDING UNTIL THE OWNER HAS SIGNED
OFF ON THE TURNOVER OF THE FACILITY.
�;�� Dewberrys
All:
Dewberry Engineers Inc.
40D5 LAKE BROOK DRIVE
SUITE 20D
GLEN ALLEN, VP 23060
104 200 7957 (PHONE)
804 290 '928 ( FAX)
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Na I DATE I BY I Descr7pNm
REVISIONS
DRAWN BY TYR
APPROVED BY DNK
CHECKED BY MCT
DATE ND✓ENBER 2011
TITLE
EROSION &
SEDIMENT
CONTROL NOTES
PROJECT NO. 50097555
C8.05
SHEET NO. OF
Section 5. Stormwater Management Plan
(Provide a reduced 11x17 copy of the latest stormwater management plan. Do not reference only.)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
9
STORMWATER SUMMARY
PROJECT DESCRIPTION
THIS PROJECT /5 LOCATED AT B/RDWOOD (ALF COURSE IN THE COUNTY OF ABERMMLE.VIRGINIATHE PROJECT INCLUDES
THE CONSTRUCTION OF A 2 LANE ROAD TO CONNECT GOLF COURSE DRIVE AND BERWICK ORNE.THE SITE IS LOCATED
NORTHEAST OF THE BOAR'S HEM SPORTS CLUB AND SOUTH OF THE BIRLWOUD MANDR.THE PROJECT AREA WILL
DISTURB APPROXIMATELY 2.0 ACRES ABO WILL INCREASE THE IMEPRVIOUS SURFACE WITHIN THE PROJECT AREA BY 022
ACRES.THE SITE AREA DRAINS INTO MOORE'S CREEK AND THEN INTO THE RAANNA RHER.THE SOILS WITHIN THE
PROJECT AREA ARE HSG B AND C.THE PROJECT IS LOCATED IN THE NOORE'S CREEK HUC 6 WATERSHED,
STORMWATER MANAGEMENT METHODS (DUALITY)
THE VIRGINIA RUNOFF REDUCTION MET IAD WATER DUALITY CALCULATIONS IN SHEET CSD3 INDICATE A REOUIRED
PHOSPHORUS REMOVAL OF OB4 LB/YR.THIS REMOVAL IS MET THROUGH THE USE OF A BAORETENTION LEVEL 2.WHCH
REMOVES OB5 LB/YR.THIS BMP WAS DESIGNED USING THE VA DEB CLEMINGNOUSE SPECIFICATION NO. RBMP INFORMATION
CAN BE FOUND ON SHEETS C903
STORMWATER MANAGEMENT METHODS (OUANTITY)
THE CALCULATIONS COMPLETED FDIC THIS REPORT ANALYZED THE IYEM,2-YEM.AND IPYEM STORM EVENTS.IN ORDER
TO MEET CHANNEL PROTECTION (ENERGY BALANCEI AND FLOOD PROTECTION.WATER OUANTITY ANALYSIS INCLUDED ROUTING
THE STORMS THROUGH THE PROPOSED BARETENTAN AND A PROPOSED DETENTION DEPRESSION LOCATED ON THE
SOUTHEAST SIDE OF THE PROJECT.
ENERGY BALANCE IS MET BECAUSE THE PROPOSED I -YEAR DISCHARGE /S LESS THAN THE ALLOWABLE DISCHARGE AT
THE WrFALTHE TABLE BELOW SUMMMIZES THE FYEM FLOWS.SEE SHEET C9D4-C9D5 FOR MAPS AND ROUTINGS.
PRE-OEVEIDPYEMf ALLOWABLE Po57.0.ElYELAPYENr
WFS1 DISCHARGE AMPS) PCFSJ
FYEM STORY 730 600 432
FLOW PROTECTION IS MET BECAUSE THE A YEAR DISCHARGE FOR THE TOTAL OUTFALL DRAINAGE AREA DECREASES
BETWEEN PRE AND POST DEVELOPMENT CONOTIONS.THE TABLE BELOW SUMMARIZES THE *YEAR FLOWS.SEE SHEET
CSDS - C%B7 FOR MAPS AND ROUTINGS.
PRE -DEVELOPMENT POST-DEVEL 7Nr
lCFSI fCF51
*YEAR STOAV 8636 6627
14
PRE -DEVELOPMENT DRAINAGE CRITERIA
! Dewberry
Figure 2.1 - Pre -Development Curve Number Value Calculation
TR -SS rllrvP Numhar Valnac f— I Irhan 0raac
CN'S FOR RUNOFF IN
URBAN AREAS
COVER DESCRIPTION
AVG. PERCENT IMPERV
AREA
ON
__T
FOR SOIL GROUP:
_B C
D
AREA
COVER TYPE
C
D
COVER TYPE
OPEN SPACE: (LAWNS. PARKS. ECT.)
GRASS COVER <50%
68
79 86
89
GRASS COVER 50% TO 75%
GRASS COVER<50%
49
69 79
84
GRASS COVER >75%
89
39
61 74
80
IMPERVIOUS AREAS:
79
84
GRASS COVER>75%
PAVED PARKING LOTS, ROOFS, DRIVEWAYS, ECT.
61
98
98 98
98
STREETS AND ROADS:
PAVED; CURBS AND STORN SEWERS
98
98 98
98
PAVED; OPEN DITCHES
STREETS AND ROADS:
83
89 92
93
GRAVEL
76
85 89
91
DIRT
98
1 72
82 87
89
URBAN DISTRICTS:
89
92
93
GRAVEL
COMMERCIALAND BUSINESS85%
76
89
92 94
95
INDUSTRIAL
72%
81
88 91
93
AREA A
AREAS
POST- DEVELOPMENT DRAINAGE CRITERIA
® Dewberry
Figure 2.2 - Post -Development Curve Number Value Calculation
TR -55 Curve Number Values for Urban Meas
CNS FOR RUNOFF IN URBAN AREAS
COVER DESCRIPTION
AVG. PERCENT IMPERVCN
FOR SOIL GROUP:
AREA
_7__B
C
D
COVER TYPE
OPEN SPACE: (LAWNS. PARKS. ECT.)
GRASS COVER<50%
68
79
86
89
GRASS COVER 50% TO 75%
49
69
79
84
GRASS COVER>75%
39
61
74
80
IMPERVIOUS AREAS:
PAVED PARKING LOTS, ROCFS, DRIVEWAYS, ECT.
98
98
98
98
STREETS AND ROADS:
PAVED; CURBS AND STORN SEWERS
98
98
98
98
PAVED; OPEN DITCHES
83
89
92
93
GRAVEL
76
85
89
91
72
62
07
OD
URBAN DISTRICTS:
COMMERCIAL AND BUSINBS
85%89
92
94
95
INDUSTRIAL
72%
81
88
91
93
A
r
VIRGINIA RUNOFF REDUCTION METHOD CALCULATIONS
DEDwiRmORU.WRedun Mamoe RPDeeemxa.lc.oim..<SPreaemeel-V... 3.0
BMPc.,w�wxrT�no�, u,l� mL3 ro. eB3Pxa
Site Summary - Linear Development Project-
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Site Compliance Summary- Y}eUrear Development Project
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Drainage Area Summary
ARGE) TP REDOR ON EX EEDED BY DD2 EB[YEAR
Drainage Area A Summary
and Cover Bummary
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Dewberry®
Dewberry Engineers Inc.
480.5 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23080
004.290.]98] (PHONE)
804.290.]928( FAX)
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SCALE
REVISIONS
DRAWN BY TMR
APPROVED BY DANK
CHECKED BY MCT
DATE NOVEMBER 2017
TITLE
SWM NARRATIVE
AND
CALCULATIONS
PROJECT NO. 5009/555
C9.01
E
C
C
B
P
19
PRE -DEVELOPED LAND COVER MAP
TOTAL AREA • 2JO ACRES
A
POST -DEVELOPED LAND COVER MAP
r
F
TOTAL AREA • 2JO ACRES
Dewberry®
Dewberry Engineers Inc.
4805 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23080
804.290.]85] (PHONE)
806.290.]92B(FAX)
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SCALE
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0 SO' 100'
REVISIONS
DRAWN BY TMR
APPROVED BY OMK
CHECKED BY MCT
DATE NOVEMBER 2017
TITLE
PRE AND POST
DEVELOPED
LAND COVER
AREA
PROJECT NO. 5009/555
C9.02
SHEET NO. OF
E
OR
C
B
P
WATER QUALITY NARRATIVE
TMS PROTECT WAS ANALYZED USING THE REDEVELOPMENT VIRGINIA RUNOFF REDUCTION METHOD THIS PROJECT
DISTURBS A TOTAL OF 2XO ACRES AND REDORIES A PHOSPHORUS REMOVAL OF 0B4 LB/YR. THE PROPOSED BOR£TENTION
TREATS O6rAC OF SITE AREA AND HAS A TOTAL DRAINAGE AREA OF 160 ACRES. THE BIORETENTION REMOVES 0296 LB/YR
AND THEREFORE THE PR0.IECT MEETS WATER QUALITY.
81ORETENTION 8AS/N */
BIORETENTION BASIN •IWAS DESIGNED TO BE A LEVEL 2 SYSTEM WITH A REQUIRED TREATMENT VOLUME OF DOW AC -FT.
THE BASIN WAS DESIGNED WITH A TREATMENT VOLUME OF w3 AC-FT.THE TWO FORMS OF PRETREATMENT HIVE BEEN
PROVIDED THROUGH A GRAVEL DIAPHRAGM AND A PRE-TREATMENT CELL
9 DoWbany
BIO 1- Bioretention Sizing
Sizing R=_quired for Bioretention Basin (Per VA DCR Stormwater Design Specification No. 9)
Treatment volume (Tv):
TuBMP=Ij(1)(12)U'J+ anyremaining vo1wne Jrom upstream B tp
Rv l 1 0.46
Are.
(A)_ 0.91 acres
Remaining Volume= Oacre-ft
TVBMP= 0.035 acre -ft
BioRltel Sizing Required (SA):
Surface Area Computation (Equation 9.4: Bioretention Level Design Surface Area)
SA(sq. ftj _ (1.25 • T BAI - [Ne vatume reduced by ent upsnewtht BMP
1.65(t
TVBMP= 1528.59
Volume Reduced= =sq.ft.
SA= 1158.03 sq.ft.
Aran chnwn nnI 1536 cn it
Area left untreated by b'oretention: -377975 sq.ft.
Shortest Flow Path Ratio Length (Equation 9.5):
Level 2 Ratio must be 0.8 or greater
SPP
Ratio= L
Shortest Flow Path (I = 160 ft.
Length (L)= 160 ft.
Ratio= 1
4
BIORETENTION DRAINAGE AREA
A
SWM DA • l5 AC
SITE AREA • 09l AC
IMPERVIOUS TREATED • 031 AC ') r r I v _ L, �� / '
'
PERVIOUS TREATED • 0.60 AC
'�
I_-_- __
ETE�IQ�LLM��'VVB�/
�
AREA51AR6,ACE i
/5361 S
I \fir )I PRETREATMENT 1 I
GRAVEL DIAPHRAGM.
'PRETREATMENT
SAIL 143 5E3 sE
x
1 r
6" DIA. PVC CLEAN-OUT
BMP SURFACE WITH THREADED CAPS
2" HARDWOOD MULCH
a., (VA CLEARING HOUSE
MIN. T FILTER MEDIA
TVA CLEARING HOUSE
SPEC. NO. 9 TABLE 9.6)
6"
RV CALCULATIONS:
F.uenc
• Mowin of Hass fuer stri s arc bioretenlion tart cover
At least 4 times a ear
• S O weedin ,erosion re air, tush removal, and mulch rakn
Land Cwer (HSG C Soils)
• Adc reinforcement planting to maintain desired the vegetati3n
1
dereily
Calvet-Orcobr
ITPervtous=
As needed
0.31
ac
GEOTEXTILE FILTER FABRIC
0.008
• Supplement mulch to maintain a 3 inch layer
Managed Turf=
• Pruie bees and shrubs
0.57
P.
ac
Once eve : to 3 ears
Kb
6" DIA. PERFORATED PVC
Forested=
Rectangular War
WI 1
ac
Tw
552.00
@ 0.5% MIN
Form 1
K
BIORETENTION
DETAIL -
LEVEL 2
Land Cwer RV
NIA)
(NA)
N.T.S.
Tl ratio 111
Impervious=
0.95
1.193
9bpe Cure- Fac[w
-0.500
Managed Turf=
0.22
SHEET
Fnre•rorr=
nna
FLOW
2"-4"1ROP
�2' MIN 2' MI
Rv= ((0.31.0.95+(0.57.0.22)+(0.03.0.04))/(0.31+0.57+0.03
BOTTOM OF
Rv=
BAG
E ORETENTION
0 37
GEOTEXTILE
VDOT CLASS
FILTER FABRIC
1 RIPRAP
V MIN WITH 1:1
SIDE SLOPES
PRETREATMENT - GRAVEL DIAPHRAGM DETAIL
FOR SHEET FLOW FROM IMPERVIOUS OR PREVIOUS
N.T.S.
4' WIDE STRIP GEOTEXTILE FILTER
FABRIC
LAID ON CENTER LINEARLY OVER
UNDERDRAIN
6" DIA. NON -PERFORATED PVC OUTLET
PIPE CONNECTED TO OUTLET
STRUCTURE (SEE DETAIL FOR VDOT
SWM -1 OUTLET STRUCTURE)
MINIMUM 12"#57 STONE BELOW PIPE
F
BIORETENTION MAINTENANCE REQUIREMENTS
A
SECTION 4 VAC 5060.124 OF THE REGULATIONS SPEFIOYES THE CIRCUMSTANCES UNDER WHICH A MAINTENANCE
AGREEMENT MUST BE EXECUTED BETWEEN THE OWNER AND THE LOCAL PROGRAM THIS SECTION SETS FORTH
INSPECTION REONREMEMS.COMPLIANCE PROCEDURES IF MNNENTANCE IS NEGLECTED.NOTIF)CATIONS OF THE LOCAL
PROGRAM UPON TRANSFER OF ONNERSHIRAND 1434aTOF4AY ENTRY FOR LOCAL PROGRAM PERSONNEL
FOR BIGRETENTXN MAINTENANCE AGREEMENTS MUST CONTAIN RECOMMENDED MAINENTANCE TASKS AND A COPY OF AN
ANNUAL INSPECTION CHECKLIST.A DEED RESTACTION.ORAINAGE EASEMENT OR OTHER MECHANISM ENFORCEABLE BY THE
OVAL/FYINO LOCAL PNCRAM MUST BE IN PLACE TO HELP ENSURE THAT RAIN GARDENS AND BIORETENTAON FILTERS ARE
MAINTAINED AND NOT CONVERTED OR DISTURSEDAS WELL AS TO PASS THE KNOWLEDGE ALONG TO ANY SUBSEQUENT
ONNERS.THE MECHANISM SHONLUF POSSIBLE. GRANT AUTHORITY FOR LOCAL AGENCIES TO ACCESS THE PROPERTY FOR
INSPECTION OR CORRECTIVE ACTION
Table 9.7. Suggested Annual Maintenance Activities for Bioretention
Maintenance Tasks
F.uenc
• Mowin of Hass fuer stri s arc bioretenlion tart cover
At least 4 times a ear
• S O weedin ,erosion re air, tush removal, and mulch rakn
Twice aurin Owin season
• Adc reinforcement planting to maintain desired the vegetati3n
1
dereily
Calvet-Orcobr
• Renove invasive plants using racommended control methads
As needed
• Stabilize the contributin drain a area to revent erosion
547.50
• Spring inspection and cleanup
0.008
• Supplement mulch to maintain a 3 inch layer
Annually
• Pruie bees and shrubs
RarIr an!
• Renove sediment in re -treatment cells and inflow points
Once eve : to 3 ears
I • rcepace me mulcn layer
BIORETENTION OUTLET STRUCTURE
I r=very syears I
BIORETENTION OUTLET STRUCTURE
Return Event: 1 years
Label: Proposed Outlet Strudure Storm Event: I Year
Requested Pond Water Surface Elevations
ay
Incremert (Heatlwater) 0.50 R
MaKlmurn (Headwater) 553.00 ft
Outlet Connectivity
Structure Type pAktlD Direction Utah El E2
(R) (R)
U -, ,-I merged inlet control equation below Tt
elevator.
Use submerged inlet control 0 equation above T2 elevation
In transition zone between unsubmeried and submerged
inlet control,
interpolate between lbws at Tl & T2..
Inlet Bac
Rirer - I
Forwarsre +
Culvert- 1
551.90
553.00
1
Diameter
Calvet-Orcobr
Q)vat-i
dab+
TW
547.50
553.00
0.008
Outlet Carrot Data
0.600
Manning'.n
RarIr an!
Ke
0.200
Kb
0.023
Kr
Rectangular War
WI 1
0.00 ft
Tw
552.00
553.00
Form 1
K
TailwaterSeton s
T2lwater
2.0000
C
NIA)
(NA)
0.6900
U -, ,-I merged inlet control equation below Tt
elevator.
Use submerged inlet control 0 equation above T2 elevation
In transition zone between unsubmeried and submerged
inlet control,
interpolate between lbws at Tl & T2..
Structure ID: Culvert -1
480 Rs/s
Structure Type: Culvert -Circular
IN/
Number d Bartels
1
Diameter
15.0 in
Length
It
.m
_0- (1-r-e•rrN)1.
rt
Sope(Computed)
0.008
Outlet Carrot Data
0.600
Manning'.n
0.013
Ke
0.200
Kb
0.023
Kr
0.000
Cawergence Tolerance
0.00 ft
Inlot C•nrol Da<a
Fake
Equation Farm
Form 1
K
05
I.04
M
2.0000
C
0.0317
y
0.6900
Tl ratio 111
1.091
T2 rata, HW/D)
1.193
9bpe Cure- Fac[w
-0.500
U -, ,-I merged inlet control equation below Tt
elevator.
Use submerged inlet control 0 equation above T2 elevation
In transition zone between unsubmeried and submerged
inlet control,
interpolate between lbws at Tl & T2..
TI Elwedm 54&86 R TI Flow
480 Rs/s
T2 ted
54&99 R T2 I-549
IN/
Structure ID: Riser -1
Structure7ype: Inlet Box
Number d Openings
1
Elevatlan
551.90 ft
Orifice Area
9.0 W
Onfice CaeI ficier t
0.600
Weir Length
12.00 ft
Weir 0ce91clent
3.00(ft-0.5)/s
K Reverse
1.000
Manning': In
0.000
Kev, Chage) Riser
0.000
Weir 5 I nergence
Fake
Orifice Hto vest
Fake
Structure ID: Weir- 1
Structure Type: Rectangular Weir
Number d Openings
1
ELaa[bn
552.00 ft
Weir Lan"
20.00 ft
Wei Coef-Ort
3.00(R^0.5)/s
Dewberry®
Dewberry Engineers Inc.
4905 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23080
804.290.]95] (PHONE)
804.290.]928(FAX)
C)
NN 0
�U)LL �0
L00 0o
0UU LL
Lu_j LU LLJ
OZ Om
CD0 Z 00
U LL
SEAL °�,LggALTROPL .
gg CMOMAS
0.4611
10 L
SCALE
SCALE: 1" = 50'
0 50' 100'
REVISIONS
DRAWN BY TMR
APPROVED BY DANK
CHECKED BY MCT
DATE NOVEMBER 2017
TITLE
WATER QUALITY
NARRATIVE &
CALCULATIONS
PROJECT NO. 5709/555
C9.03
E
E
C
B
9
CHANNEL PROTECTION ANALYSIS
THIS PROJECT OUTFALLS INTO A NATURAL CHANNEL DOWNSTREAM OF THE EXISTING GOLF COURSE POND.ENERGY
BALANCE WAS ANALYZED AT THIS POINT TO MEET CHANNEL PROTECTION CRITERI/LTHE PROPOSED BIORETENTION
BASIN AND PROPOSED DETENTION BASIN WERE UTILIZED WITHIN THE OUTFALL'S DRAINAGE AREADUE TO THE LARGE
AMOUNT OF OFFSITE THAT THE DETENTION BASIN RECIEVES IN BOTH EXISTING AND PROPOSED CONDITIONS.THAT
ADDITIONAL AREA AND FLOW WAS ROUTED IN EXISTING AND PROPOSED CONDITIONS.SEE PONDPACK SCHEMATICS ON
THIS SHEET.
FOR THE OUTFALL•THE MAXIMUM ALLOWABLE I -YEAR DISCHARGE PER THE ENERGY BALANCE £OVATION IS 6.00 CFS.
THE PROPOSED I -YEAR DISCHARGE IS 4J2 CFS.S£E THIS SHEET FOR ENERGY BALANCE CALCULATIONS.
SEE SHEET C9J25 FOR THE I -YEAR ROUTINGS.
PRE—DEVELOPED DRAINAGE AREA MAP
OUTFALL I DRAINAGE AREA (AC) ITC PATH (MIN)WEIGHTED CN
SITE AREA 195 7.4 791
OFFSITE AREA 250 By 76b
DETAINED
!v—
xl e
ml'/E1
POST—DEVELOPED DRAINAGE AREA MAP
OUTFALL
DRAINAGE AREA (AC) TC PATH (MIN)WEIGHTEI
BIORETENTION
1.60 510 80
SITE AREA
e.�
POST—DEVELOPED DRAINAGE AREA MAP
OUTFALL
DRAINAGE AREA (AC) TC PATH (MIN)WEIGHTEI
BIORETENTION
1.60 510 80
SITE AREA
077 7.4 83.6
(BYPASS)
DETENTION
BASIN
286 89 77.4
♦
SITE! AREA
'DRAINING TO OUFALL
UENT/BN-B ;DA�e
A
MIN
r
ENERGY BALANCE CALCULATIONS
A
UVA Boar Head's Road
Pr�aeQ:
VLA
aeml
��
STFP I: Dalermine 110 Pre OwWpN. Wmn
Pre Developed Ct,.m as Forested C-dtli—
Post Developed C-dii Offsite Coodbioos
we=11N= =
ily�a�J �•
nre.laW_ l re.r �_
.a.( �_
1.
P(Ii SM P@y= 3.
r
ENERGY BALANCE CALCULATIONS
A
UVA Boar Head's Road
Pr�aeQ:
Ib --- &Coanry
Cnannel type. rvvmeW endm� etT
Dewberry
STFP I: Dalermine 110 Pre OwWpN. Wmn
Pre Developed Ct,.m as Forested C-dtli—
Post Developed C-dii Offsite Coodbioos
we=11N= =
ld=1N= w.igxtm cN=
nre.laW_ l re.r �_
.a.( �_
1.
P(Ii SM P@y= 3.
POn.1= P(Ii 3.W
P.e m..Wep.dm.emree a-re..md e-nd�n�D.w �.
6S 14
--. .Di g offwre cmwf�a u�narxx
S 2 1 3.0
Q 0.) 1.3 j. Q0.) 0.7 j.
Q0.) 1.5 Q(In)
(Prom -d—)
Pandvaok) '.'a ••
R-
�ae
Qp-wwi�-maR=
Qpo=Iwi RR _ 15
STEP 4: CWc W ace Qaa.en wring be energy balance eyaan--. On ly apply de
impmrement facmr to Ilse tliawNed area
emm�IP,m U.g
Q.—, IToml mdwH-moan Diubmgo(i-1v-lume. Unpmvmmm
rworx -- -d -lame)/(Par-nevWoemwl v-lamevo0ailev-lu,,.:
Q—'. 6.00 cfs
$TFP S. CWCWacetl Maximum Nowable Peak Disebarg.
um ae oQ• �.J
(Q
je
mumu dvl PgeGl x (PortA V-loma • Olrm�e V-lamayryal
Dervdopmenl V-lume+O!lrila Volmre)
kD� r8e r
b.W cfs
eTFP e: Pmaore.Q a i .MI—NA—
I-d
-dPaek) aia
PRE PONDPACK SCHEMATIC
SITE .SREA
POST PONDPACK SCHEMATIC
SITE AREA
AINED
o l Site rea B SITE AREA
O BYPASS DA
DA
IORLTENTIO DETENTION
BASINDETENTION
OUI'A" %DEI EN'1.11 BASIN
DUTLETSTR
4q. Dewberry®
Dewberry Engineers Inc.
4 N LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23080
804.210.]'11] (PHONE)
806.290928(FAX)
C) Il
Lu LLI
>— U)� CI)0
Q�� 0
X00 000
0UU J�
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SEAL °�,ty1=11- pL .
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ht
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Lic. 0.4611 ,�
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°NAL
/.
SCALE
SCALE: 1" - 100'
0 100' 200'
REVISIONS
DRAWN BY TMR
APPROVED BY DMK
CHECKED BY MCT
DATE NOVEMBER 2017
TITLE
CHANNEL
PROTECTION
MAPS AND
CALCULATIONS
PROJECT NO. 5009/555
C9.04
SHEET NO. OF
E
C
C
B
P
I
I
PONDPACK l -YEAR ROUTINGS
I
1
7,196.
11.950
CHANNEL PROTECTION
Project Summary
Pe -Development Iyear
71d.
BOWS HEAD
11.950
CONNECrOR ROAD
15'.-
Pa[ Development 1 year
Campam
4,323.000
Data
u/20/20r7
Notes
Port Development 1 year
Catchments Summar
Label 8oenario Return Hydrogaph Volume Tme to ieak Peak Fbw
Event (fts) (hour) (ft -/s)
Do DA
P0# Development 1 year
1
7,196.
11.950
3.24
AO 19. Area Bypass
Pe -Development Iyear
1
qWM
11.950
3.59
AD 1 Site Area Bypass
Pa[ Development 1 year
1
4,323.000
11.950
1.74
per BASIN DA
Port Development 1 year
1
11,3B0.000
12.000
4.34
Debit offsite DA
Pn-Development 1 year
1
9,"7.000
12.800
3.80
Node Summary
Post
Development)
1
],196.000
11.950
label
Scenario Rdurn
Hydrogaph Volume Time to 'oak
Peak Flow
year
Even[
(fts)
(hour)
(ft -/s)
o-1
PRDevelopment I year
1
I8,%1.
12.000
7.30
PI
Fol, Development 1 year
1
:,810.
12.100
1.32
Pond Summary
2,125.000
12.100
0.94
551.
Libal Stereo. Return Nydrograph
Tme to Peak
Peak Row Madmum
Maximum Pond
0.10
Event voume
(hours)
(fv/s) Vater Sunaoe
Storwe
0.19
(years) (ft.)
4.000
Elevafion
(fts)
D.IS
0.16
0.16
(ft)
Development)
Bio_Pro(IN)
Post
Development)
1
],196.000
11.950
3.24
(N/A
(N/A)
0.02
year
0.03
0.03
1.000
0.03
0.09
0.09
0.04
Post
1.500
0.05
0.05
0.06
0.05
0.06
Eio_Pro(OUT)
Development]
1
2,125.000
12.100
0.94
551.
3,291.000
0.09
yea,
0.10
0.10
3.500
0.13
O.13
0.13
0.19
Post
4.000
0.15
0.15
D.IS
0.16
0.16
Da Basln(IN)
Development)
1
11,380.000
12.000
4.34
(N/A
(N/A)
0.20
yea,
0.21
0.21
5.500
0.22
0.22
0.23
0.23
0.24
6.000
0.29
0.25
0.25
0.26
0.27
0.tBasin(OUT)1�
bpmeatl
1 11
11,362.0001
12.1001
2.531
546.99(
1,822.0001
Return Event: I years
Label: Time -Depth - 1 Stoma Event: 1 Year
Time -Depth curve: 1 Year
Ute ] Year
Sart Time 0.000 Hours
Iacenaa O.too hours
Ed Tme 24.0001 -ours
R INm Event 1 years
CUMULATIVE RAINFALL (in)
Output Time Increment =0.100 hours
Time on left reoresents time for Rnt value in each row.
Time,Depth Deptli Or Depth teeth
0.000
0.00
0.00
0.01
0.01
0.01
0.500
0.02
0.02
0.02
0.03
0.03
1.000
0.03
0.09
0.09
0.04
0.05
1.500
0.05
0.05
0.06
0.05
0.06
2.000
0.07
0.070.0]
0.
0.08
0.08
2.500
0.00
0.09
0.09
0.10
0.10
3.500
0.13
O.13
0.13
0.19
0.14
4.000
0.15
0.15
D.IS
0.16
0.16
4.500
0.17
O.11
0.18
0.18
0.19
5000
0.19
0.20
0.20
0.21
0.21
5.500
0.22
0.22
0.23
0.23
0.24
6.000
0.29
0.25
0.25
0.26
0.27
6.500
0.21
0.28
0.28
0.29
0.29
7.000
0.30
0.31
0.31
0.32
0.33
7.500
0.33
0.34
0.35
0.35
0.36
8.000
0.36
0.37
0.38
0.39
039
9.000
0.95
0.46
0.9]
008
0.99
9.500
0.50
0.51
0.52
0.53
0.59
10.000
0.55
0.56
0.58
0.59
0.60
10.500
0.62
0.69
0.65
0.67
0.69
11.000
0.]1
0.74
0.76
0.19
OJU
11.500
0.86
0.93
1.08
1.31
1.73
12.000
2.02
2.0]
1l2
2.17
220
12.500
2.23
126
2.28
2.31
233
13.000
2.35
2.36
2.38
2.40
2.91
13.500
2.43
149
2.46
2.47
2.98
14.500
2.55
2.56
2.5]
2.58
2S9
15.000
2.59
2.60
2.61
2.62
2.63
15.500
2.64
2.65
2.65
2.66
2.67
Ifi.000
2.68
1:6
2.fi9
2.]0
2.70
16.500
2.11
2.72
2.72
2.23
ZJ4
17.000
2.74
2.75
2.75
2.]6
2.11
:.500
2.71
2.18
2.18
2.79
2.A
18.000
2.60
2.81
2.81
2.82
2.82
18.500
2.83
2.83
2.84
2.84
2.85
19.000
2.85
2.86
2.86
2.16
2.82
20.000
2.89
2.90
2.90
2.91
2.9]
20.500
2.91
2.92
2.92
2.93
2.93
21.000
2.93
199
2.99
2.99
2.95
21.500
2.95
2.%
2.%
2.96
2.97
22000
2.97
2.97
2.%
2.98
2.98
n500
2.99
2.99
3.DO
3.00
3.00
23000
3.01
3.01
3.01
3.02
3.02
23.500
3.02
3.03
3.03
3.03
3.04
24000
3.04
(N/A)
(N/A)
(N/A)
WA
14
A
Return Event: 1 years
laud: AO 1 Slle Aea typ - -- -1-01-
Runoff
1-01 [MRunoff Curve Number Data
Soil/Surtace Description 0, Area C UC Adjusted CN
% %
Inyervlous Ness - Pared; mrbs am cram
ewes - Sall C
98.000
0.33
0.
0.0
18.000
Open space (lawns,paks etc) - Good condition;
gess cover > 75%- SNI A
61.000
0.
0.0
0.0
41.000
OPen space (lawru,paks eft.) - Good mndidon;
%- Stil r
74.000
0.100
0.0
0.0
19.000
COMPOSTS AREA&WDGHED CN->
(N/A)
on
(N/A)
(N/A)
0.630
Return Event: 1 years
Label: AO 1 Site Area Bypass - PRE DEVELOPMENT Storm Event: 1 Year
Runoff Curve Number Data
Soil/surface Desr+ipdon (4 Area C Uc fdjustd CN
Wood, good -SoilC
70.000
0.200
00
0.0
'0.000
rmpervious,veas- race0; cams ono suxm
rs - Sail B
98.000
0.03
0.
0.0
00.000
Impervious Neas - Pane; curbs and searm
74.000
0.
0.
0.0
'9.000
rs-S011C
98.000
0.
010
0.0
19.000
Open space (lawns,pats eta) - Good condition;
70.000
O.TI
0.
0.0
5.000
gass mver> 75%- SNI B
61.000
0.0,10
0.0
0.0
51.000
Open space (Larvre,paks etc) - Goad mndifion;
gas, mver> 25%- SNI C
79.000
1.200
0.0
0.0
'4.000
COMPOSITE AREA & WEIGHTED CN ->
(N/A)
1.9
(N/A)
(N/A)
5.600
Subsection: Runoff CN -Area Return Event: 1 years
Label: Bio DA Storm Even 1 Year
Runoff Curve Number Data
Soil/Surtare Description P4 Area C UC fdjustel CN
% %
Impervious Meas - Pa ed; mrbs and storm
sewers - Soil C
%.000
0.52
0.
0.0
18.000
woods- good -SoilC
70.0.0
0.l
0.
0.0
'0.000
Open space (I in,.j aks etc) - Good mndluon;
gass mver> 75%- Sil C
74.000
0.
0.
0.0
'9.000
Open space (Lawrss,paks eb.) - Good! mndifiai;
gass mver> 75% -Sia C
74.000
1.310
0.0
0.0
N.000
Return Even: 1 years
Label: DET BASIN DA Stam Event: 1 Year
Runoff Curve Number Data
Soil/Surface Desaipdon 0, Area CUC AO)ustd CN
% %
Impervious Ness - Paced; alts and scam
Soil C
%.000
0.110
0.0
0.0
MM
Open space (Lawm,paks en-) - COW mrdidai;
gass mver> 75%- SNI C
74.000
0.2SO
0.0
0.0
!4.000
Impervious Naas- Para; mHn and sbXm
sews - S011 C
96.000
0.42
0.
0.0
18.000
Open space (Lawrss,paks eb.) - Good! mndifiai;
gass mver> 75% -Sia C
74.000
1.310
0.0
0.0
N.000
woods-gme-Solt
70.000
O.TI
0.
0.0
5.000
COMPOSITE AREA & WDIinED fl4 ->
(N/A)
2.W
WA)
(N/A)
Return Even: 1 years
Label: Detained (Hsite DA Storm Event: 1 Year
Runoff Curve Number Data
Soil/Suffare Description 0 Area C Uc Adjusted O4
Impervious Neal - Pane; abs and arm
rs - Sail C
%.000
0,42
0.
0.0
18.000
Open space (lawrrs,paics etc) - Good condNon;
gass aver > ]5%- SNI C
]4.000
1.31
0.
0.0
'9,000
woods-good-SAIC
70.000
O.T7
0.
0.0
M. 000
COMPOSM AREA&WEIED ON
GH
(NIA)
2.
(WA)
(N/A)
16.800
r
A
Dewberry®
Dewberry Engineers Inc.
4905 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23060
804.290.]95] (PHONE)
804.2%.]928 (FAX)
C) I1
< 0
LU LLI
O
X00 oou
dLL J�
LU LLJ
w0z ()Do
�__ z �
C�0 0�
U LL
SEAL °�,(ygA11_.
° 1_
C THOMAS
Lic. 0.4611 ,�
SCALE
REVISIONS
DRAWN BY TMR
APPROVED BY DMK
CHECKED BY MCT
DATE NOVEMBER 20/7
TITLE
CHANNEL
PROTECTION
PONDPACK
ROUTINGS
PROJECT NO. 5009/555
C9.05
SHEET NO. OF
E
E
C
B
P
1
9
FLOOD PROTECTION ANALYSIS
THIS OUTFALL UTILIZES THE PROPOSED BIORETENTON AND DETENTION BASIN TO MEET FLOOD PROTECTION. THE ENTIRE
DRAINAGE AREA TO THE OUTFALL WAS ROUTED.FLOOD PROTECTION IS MET FOR THIS PROJECT BECAUSE THE IO -YEAR POST
DISCHARGE OF 8627 CFS IS LESS THAN THE 10 -YEAR PRE DISCHARGE OF 86.36.SEE SHEET C9,07 FOR THE PONFACK
SCHEMATICS AND ROUTINGS.
PRE -DEVELOPED DRAINAGE AREA MAP
q
A
POST -DEVELOPED DRAINAGE AREA MAP
r
IFAI
Wvt
DRAWN BY
I
II€T
DUK
APPROVED BY
W" i q
'14
NOVEMBER 2017
DATE
-41 /
111
q
A
POST -DEVELOPED DRAINAGE AREA MAP
r
\TOTAL OUTFALL DRAINAGE AREA
(OFFSITE AREA)
as
IFAI
Wvt
DRAWN BY
I
II€T
DUK
APPROVED BY
W" i q
'14
NOVEMBER 2017
DATE
-41 /
\TOTAL OUTFALL DRAINAGE AREA
(OFFSITE AREA)
as
off-- m.
fflum
M
Dewberry®
Dewberry Engineers Inc.
4805 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23060
804.290.]85] (PHONE)
2.,
C) �
< 0
LU o LLI <
U) C/)
0
00 0 (-)
0 LL
LL -j
Lu 0 LLJ
Luo_jz ()Do
�--(Dz :Eo
0 0�-
LL
SEAL
ht
4911
SCALE
SCALE: 1" - 100'
now
0 100, 200'
REVISIONS
IFAI
Wvt
DRAWN BY
I
II€T
DUK
APPROVED BY
S,3C!m
CHECKED BY
NOVEMBER 2017
DATE
off-- m.
fflum
M
Dewberry®
Dewberry Engineers Inc.
4805 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23060
804.290.]85] (PHONE)
2.,
C) �
< 0
LU o LLI <
U) C/)
0
00 0 (-)
0 LL
LL -j
Lu 0 LLJ
Luo_jz ()Do
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0 0�-
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SCALE
SCALE: 1" - 100'
now
0 100, 200'
REVISIONS
TITLE
FLOOD
PROTECTION
MAPS
PROJECT NO. 50097555
C9.06
SHEET NO. OF
TYR
DRAWN BY
DUK
APPROVED BY
RCT
CHECKED BY
NOVEMBER 2017
DATE
TITLE
FLOOD
PROTECTION
MAPS
PROJECT NO. 50097555
C9.06
SHEET NO. OF
E
E
C
B
P
I
I
PRE PONDPACK SCHEMATIC
OFFCT9'F DA
OUTFALL
POST PONDPACK SCHEMATIC
BIORETEP
11
TI
DETENTION
BIORETENTION
BASIN DA
/
l7
11.9
F
AO 1 51� Anns Bypass
lost -10 yssr
11
10,568.000
11.9
UpP h
DETENTION
2
BASIN
23,936.000
��DETENTION
9.58
AO 1 Offsite Neo
OUTFALL
BASIN
202,591.000
OUTLET STIR
PONDPACK 10 -YEAR ROUTINGS
DET BASIN DA
Post - 10 year
11
10 -YEAR ROUTINGS
Project Summary
12.24
Title BOAR'S HEAD
CONNECTOR ROAD
4,559.000
Engineer
CanPdny
0.21
Date 11/20/2017
Notes
Label Scenarb
Catchments Summary
Label Scenario Reban Hydrogmph Volume Time I. Peak Peak Fbw
Event (R3) (no.,) (R -/s)
1-1
Bb DA
Post -10 year
11
20,218.000
11.9
8.43
AO 1 51� Anns Bypass
lost -10 yssr
11
10,568.000
11.9
4.18
AO 1 Ste Oiea Bypass
Re - 10 year
11
23,936.000
11.9
9.58
AO 1 Offsite Neo
Re - l0 year
11
202,591.000
12.0
76.83
DET BASIN DA
Post - 10 year
11
32,099.0
12.0
12.24
Node Summary
Post - (Oyer
10
20,218.000
11.900
6.43
Label
Scenario
Return
Hyd ograph Volume Time b Peak
Peak Flow
13,796.000
11.950
Event
(773)
(hors)
(ft -10
0.1
Post -f0 year
11
225J99.0
12.0
86.27
o-1
Re -10 year
11
226,526.0
11.9
86.36
Pond Summary
547.92
4,559.000
0.20
0.21
0.21
Label Scenarb
Ream
Hydrdgeph
Tlme to Peak Peak Flow
Maximum
Maximum Pond
0.26
Event
Volume
(haus) (&3/s)
Water Surface
Storage
0.30
(yean)
(R3)
032
Elevation
(R3)
039
5.000
0.35
036
(ft)
0.38
BKi_Pro(IN)
Post - (Oyer
10
20,218.000
11.900
6.43
(N/A)
(NIA)
Bb_Pno(OUT)
Post -10 Year
10
13,796.000
11.950
8.45
552.12
3,701000
een3 ON)
r ten
L500
0.09
sa.
sa
(N/A)
0.12
Det BaLOUT)sin
Post -10 y®r
Io
32,058.000
12.050
11.34
547.92
4,559.000
A
r
A
I I I
PONDPACK 10 -YEAR ROUTINGS !CONT) PONDPACK 10 -YEAR ROUTINGS (CONT)
Renm Evert: 10 years
Label: Time -Depth - 1 St- Event: 10 Year Subsection: Rmoff CN -Area Retim Even: 10 years
Label: AO 1 Sit Area Bypass - PRE DEVELOPMENT Storm Evert: SO Year
Time -Depth Curve: 10 Year
Label t0 War Runoff Curve Number Data
Sanrme 0.100hwrs soil/surtareD-prion ON Aren c Uc AdiMedON
% %
lnvement 0.:00 hats
End Time 24.000 hoofs
Realm Event 10 years
CUMU.ATIVE RAINFALL (in)
Output Title Increment = 0.100 hours
Time on left represents time for first value ie each row.
Time DMd, @Pah Depth Depth De,
Ictus In 'In In In In
0.000
0.00
0.01
0.01
0.02
0.oz
0.500
0.03
0.03
0.04
0.05
0.05
1.000
0.06
0.06
0.07
0.08
0.08
L500
0.09
0.10
0.10
0.11
0.12
2.000
0.12
0.13
0.14
0.14
0.15
3.000
0.19
0.20
0.21
0.21
0.22
3.500
0.23
024
0.24
0.25
0.26
4.000
0.27
027
0.28
0.29
0.30
4.500
0.31
032
0.32
0.33
039
5.000
0.35
036
0.37
0.38
0.39
5.500
0.90
0.91
0.42
0.43
0.43
6.000
0.49
0.45
0.47
0.48
0.49
6.500
0.50
0.51
0.52
0.53
0.54
].000
0.55
0.56
0.57
10.60
7.500
0.61162
0.63
0.64
0.66
8.500
0.74
0.75
0.]7
0.78
0.80
9.000
0.82
0.84
0.85
0.87
0.89
9.500
0.91
0.92
0.99
0.%
0.98
10.000
1101
1.03
1.05
1.08
1.11
18.500
1.13
1.16
1.20
1.23
1.27
11.000
1.31
135
1.40
1.45
1.51
11.500
1.57
1.71
1.97
2.40
3.16
12.000
3.69
3.79
3.88
3.%
4.03
12.500
4.09
4.13
4.18
4.22
426
13.000
4.29
433
4.36
4.39
4.42
19.0009.56
4.58
9.60
4.62
4.69
14.500
9.66
408
4.69
421
4.73
15.000
4.75
4.76
4.78
4.79
4.81
15.500
9.82
4.89
4.85
4.87
4.88
16.000
9.89
4.91
4.92
4.93
9.99
16.500
4.%
4.97
9.98
4.99
5.00
1].000
5.01
5103
-5.05
5.06
1].500
s.D7
5108
5.09
5.10
5.11
18.000
s.12
5.13
5.19
5.15
5.16
18.500
5.17
5.18
5.19
5.20
5.21
19.500
5.26
526
5.2]
528
5.29
20.000
5.29
530
5.31
5.31
5.32
20.500
5.33
534
5.39
5.35
5.36
21.000
5.36
537
5.38
538
5.39
21.500
SAO
SAL
5.41
5.42
5.93
22.000
5.43
5.44
SAS
5.45
5.96
22.500
5.47
5.47
5.48
5.48
5.99
23.000
5.50
5.50
S.S1
5.52
S.52
23.500
5.53
5.59
5.54
5.55
5.55
24.000
5.56
(N/A)
N/A
(NIA)
WA)
Wands - good - Sal C
70.000
0.200
0.0
0.0
70.000
Impervious Areas Paved; orbs am storm
s-SolB
98,000
0.030
0.0
0.0
90.000
rs.ShcC i -ane w
98.000
0.480
0.0
0.0
98.000
Open spaa(Lawns,parks"I-Good
mrdhion; grass cover > 75%- Sol B
61.000
0.040
0.0
0.0
61.000
Open space (Lawm,parks ex%) - Good
74.000
1.200
0.0
0.0
79.000
cgMition; grass aver > 75%- SOI C
70.000
0.670
0.0
(.0
]0.000
COMPOSITE AREA&WQGHTED CN-->
(WA)
L950
(WAJ
TWA)
79.600
Rehm Event: 10 years
Label: AO 1 Offske Area - POST DEVELOPMENT Storm Event: 10 Year
Runofl Curve Number Data
Shc/Surface Description OR Area C OC Adjusted ON
Impervious Ars az - Paved; arts and slam
sewvs - 9011 C
98,000
1.:60
0.0
Realm Even: SO years
Label: Blo DA
Open Noce (Lawm,parks etc.) - Good
43_
3-
Storm Emit: 10 Year
Runoff Curve Number Data
43_
condition grass aver> 75%-So,I5
55.000
0.030
sousrfaa pe crPtion
ON
Area
C
UC Adjlsted ON
0.030
OA
CO
%
96
79.000
2.:80
0.0
f.0
]4.000
Wads - goad-SolC
70.000
0.670
0.0
(.0
]0.000
Rasidenrhl Dlstrims -1/3 ave - 501 C
81.000
7.990
0.0
CO
81.000
COMPOSITE AREA & WEIGHTED ON --->
(N/A)
13.800
(N/A)
INA)
79.T76
Ream Evert: 10 years
Label: DET BASIN DA
Stomy Evert: SO Year
Runoff Curve Number Data
SoIUSurfa a Description
ON
Arra
C
lK Adasted ON
Rehm Event: 10 years
Label: AO 1 Offske Area - POST DEVELOPMENT Storm Event: 10 Year
Runofl Curve Number Data
Shc/Surface Description OR Area C OC Adjusted ON
Impervious Ars az - Paved; arts and slam
sewvs - 9011 C
98,000
1.:60
0.0
Co
98.000
Open Noce (Lawm,parks etc.) - Good
43_
3-
0.0
Go
43_
condition grass aver> 75%-So,I5
55.000
0.030
0.0
DO
55.000
Woods -good -$016
55.000
0.030
OA
CO
55.000
Open spare (lavn a,Parks eco.) - Goatl
cordRbn grass cover > 75%- Soil C
79.000
2.:80
0.0
f.0
]4.000
Wads - goad-SolC
70.000
0.670
0.0
(.0
]0.000
Rasidenrhl Dlstrims -1/3 ave - 501 C
81.000
7.990
0.0
CO
81.000
COMPOSITE AREA & WEIGHTED ON --->
(N/A)
13.800
(N/A)
INA)
79.T76
Return Event: 10 years
Label: AO 1 Offsite Area - PRE DEVELOPMENT Storm Event: SO Year
RunoN Curve Number Data
Shc/Surface Description CN Area C UC Adjusted ON
Imam .Areas- Paved; orbs and storm
sewers mil C
%000
2.600
0.0
CO
%.000
Open spae(lawn'Paro eK.)-Gootl
mditlon', grass cover > 75%- Soll8
61.000
1:70
0.0
Go
61.000
Woods -good-Sd18
55.000
0.030
0.0
DO
55.000
Open spax(lawra'parks ek.)-Good
anditon', grass aver > 75%- Soil C
74.000
3.900
0.0
DO
74.000
Woods - good --,
2V.W0
I,-
0.0
f.0
]0.000
Resklentbl DlstrlRs-1/3 ave -SoilC
81.000
7.990
0.0
CID
81.000
COMPOSITE AREA & WEIGHTED ON -->
N/A
17.000
WA
INA)
79.395
Return Event: 10 years
Label: AO 1 Site Area Bypass - POST )EVELOPMENT St- Event: SO Year
Runoff Curve Number Data
Shc/5urface Desorption ON Aran C UC Adjusted CN
]mgw 7 Areas - Paved; arts and storm
sewers -500
913.000
0.330
0.0
f.0
98.000
Open spae(Lawre,Psrks etc.)- Good
ovdidan grass [aver > 75%- Soil B
61.000
0.M0
0.0
CO
6).000
Open spae(lawns'Parks eel.) - Good
condttbn grass cover > 75%- Sod C
74.000
0.00
0.0
GO
74.000
COMPOSITE AREA & WEIGHTED ON -->
(N/A)
0.70
(WA)
(N/a)
83.610
Impervias Areas Paved; orbs orb storm
- Sol C
98.000
0.520
0.0
0.0
98.000
Woods -good - Shc C
]0.000
0.140
0.0
0.0
]0.000
Open space (Lawn:,parks ek.)-Goad
mMi[ion; grass aver 175% -Sol C
]4.000
0.990
0.0
0.0
]4.000
COMPOSITE AREA& WEIGHTED ON --->
WA
1.600
WA
WA
81.450
Impervious Areas Paved; Barbs and storm
S01C
98,000
0.110
0.0
0.0
98.000
Open space(1awm,parks etc) -Goad
ardkb�g� aver>75%SollC
74.000
0250
0.0
0.0
74.000
rs - SOI C a 3m„o
98.000
0.420
0.0
0.0
98.000
Open space(lawns,parks M) - Goad
ardabn; grass mer > 75%. Sol C
74.000
1310
0.0
0.0
74.000
Woods - good -SOIC
70.000
0.770
0.0
0.0
70.000
COMPOSITE AREA&WEIGHTED CN-->
(WA)
2350
(N/A)
(WA)
77.371
Dewberry®
DewberrLL
LL CTHOMAS
AL
y Engineers Inc.
480
5 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23080
804.290.]95] (PHONE)
804.290.]928(FAX)
Il
NN
X00 0�
dUU J�
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SEAL 0�,2tgALTX°pL .
= Lic. 0.4611
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SCALE
REVISIONS
DRAWN BY TMR
APPROVED BY OMK
CHECKED BY MCT
DATE NOVEMBER 20/7
TITLE
FLOOD
PROTECTION
PONDPACK
ROUTINGS
PROJECT NO. 500
9/555
C9.07
SHEET NO. OF
E
r•
C
B
11
STORMSEWER DRAINAGE AREA MAPS
------------------------
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14
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STORMSEWER CALCULATIONS
Dewberry° SomSewerDe gpDpryut Haze
ILL Tl'
11 Dewberry, KydapBCGradeNne gmppta�p
Dewberry®
Dewberry Engineers Inc.
4805 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23080
804.290.]95] (PHONE)
806.290.] 928( FAX)
0
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ANAL
SCALE
SCALE: 1" - 50'
0 50' 00'
REVISIONS
DRAWN BY TMR
APPROVED BY OMK
CHECKED BY MCT
DATE NOVEMBER 20/7
TITLE
STORMSEWER
MAPS AND
CALCULATIONS
PROJECT NO. 5009/555
C9.08
E
EF1
C
B
11
DITCH DRAINAGE AREA MAPS
ltg A
10.15
1 ,%0-
s, % 0 -
,
M-5momw
V ROSE,
I . , edit -L' � �,� �
DITCH CALCULATIONS
Dewberry
19 Dewberry
Dewberry -
14
A
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Dewberry"
Dewberry Engineers Inc.
4805 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23060
�2804.290.]95] (PHONE)
2. -)
SCALE
SCALE: 1" - 50'
0 50, lbo.
REVISIONS
DRAWN BY TYR
APPROVED BY DUK
CHECKED BY RCT
DATE NOVEMBER 2017
TITLE
DITCH MAPS
AND
CALCULATIONS
PROJECT NO. 50097555
C9.09
SHEET NO. OF
E
C
C
B
P
1
CULVERT DRAINAGE AREA MAPS
CULVERT FORM
II D -bel
11
Culvert Computations
PROJECT: ---of
U
GATE: Il Oct -1)
DESIGNER: iGG
559.OT ELN-
STATON: I.+50
r �\
STRUCTURE: 19
LOT --
�_ D Bm
ELL
Mdhpd: 11TIONALMETHOD
Oreinage Area: 0.58 Acres �Strean Slope:
Chanml Snap,:
Routing: OMer
558.0 L ,g [lo
025
557.9
5 =DOW rU1l
DESIGN '-a TMLWATE :
R.I. (y n, "low (cts) _(ft)
o.8
muqm
o.,
020-0.30
0.30 0.01
CULVERT DESCIIPTION: Row PV,
HEADWATERCALCUU ONS WTLET
O.d00.]0
Banti
INLET CONTROL OUTLET CONTROL Control VELOCIT"
5. shoulder and Ditch Areas
Total:- ON fIW,/D
Meletin( -S five - EnIr,1Ke ds (1-) 2
IHV FALL ELa TW d, Id,+DIl2 H Ela, Heedwebr
3 4. 5 s a Elevallon
0.15
RCP
RGP
Llrc 12' EE51 21 2 0.93
Girc ES-.] 2. 109
OB] 558.5 Ci 0.2: 558.9 OUTLET 2.9
106 559. 0.6 03! 559. OUTLET 601
1. Bulsness: Indusldal and Corno-ill
0.80-0.80
BAD
0.93
2. Aparhned and Townhomes
0.65U.T5
a01w.m
0.75
u.eu
1.09
-4 Re kl nbel
TECHNICAL FOOTNOTES:
11,1 Usc DlNafm boa culvmx
Dischalea
SUBSCRIPT DEFINITIONS:
MDn�lm Fradwa�c,
CULVERT BARRELSELECTED:
SIZE 12'
12.1 HWi/D=HW/DorHWI/O Ummdeggn saueU
0.50
M Headwwm in Nle(uovool
SHAPF Cile ar
M.1 FAIL=HWi-(FIAd-FLsO: FAllis zoo fmcslnns on pads
lel nr Vnvenol,etrrcoewl aeon(
0.40
M Headwmerin aml<lcmwl
d+al,oe
MATERIAL Concrete f'
1
151 TVI Luedmdmmatream mnlmlm Um.deplM1in cM1annel
BAD
Owlmre
DOTTOMT'0.013
161 'mmue+D/2)(whicM1 erxrss pr<wcn
0.40
. erNm lxe
BARRELNI
IT.1 Hwll.ke T(29n2LI.I.13)IIV2ngrnrlm 1a ,gacho,
8.1 t
0.35
hz Tillw
6. Agno,R,ow
(9.) VIA�s81n.x
C 11N,bd Areas
COMMENTS: Ulcpnpulatbns have poen perbmed udnO HY-8. TM1is loon is brinlomaional purposes only and aY values mach lM1ese calculaleO.n HV -8.
0.50
Pasture
085-0.45
0.35
CULVERT FORM
II D -bel
11
Culvert Computations
PROJECT: ---of
TDP a RDAD _
�,lcE ETevarrox sm.o ""r•,�"
GATE: Il Oct -1)
DESIGNER: iGG
559.OT ELN-
STATON: I.+50
Ola' rwceaaaap .L
STRUCTURE: 19
LOT --
�_ D Bm
ELL
Mdhpd: 11TIONALMETHOD
Oreinage Area: 0.58 Acres �Strean Slope:
Chanml Snap,:
Routing: OMer
558.0 L ,g [lo
025
557.9
5 =DOW rU1l
DESIGN '-a TMLWATE :
R.I. (y n, "low (cts) _(ft)
o.8
o.,
020-0.30
0.30 0.01
CULVERT DESCIIPTION: Row PV,
HEADWATERCALCUU ONS WTLET
O.d00.]0
Banti
INLET CONTROL OUTLET CONTROL Control VELOCIT"
5. shoulder and Ditch Areas
Total:- ON fIW,/D
Meletin( -S five - EnIr,1Ke ds (1-) 2
IHV FALL ELa TW d, Id,+DIl2 H Ela, Heedwebr
3 4. 5 s a Elevallon
0.15
RCP
RGP
Llrc 12' EE51 21 2 0.93
Girc ES-.] 2. 109
OB] 558.5 Ci 0.2: 558.9 OUTLET 2.9
106 559. 0.6 03! 559. OUTLET 601
1. Bulsness: Indusldal and Corno-ill
0.80-0.80
BAD
0.93
2. Aparhned and Townhomes
0.65U.T5
a01w.m
0.75
u.eu
1.09
-4 Re kl nbel
TECHNICAL FOOTNOTES:
11,1 Usc DlNafm boa culvmx
Dischalea
SUBSCRIPT DEFINITIONS:
MDn�lm Fradwa�c,
CULVERT BARRELSELECTED:
SIZE 12'
12.1 HWi/D=HW/DorHWI/O Ummdeggn saueU
0.50
M Headwwm in Nle(uovool
SHAPF Cile ar
M.1 FAIL=HWi-(FIAd-FLsO: FAllis zoo fmcslnns on pads
lel nr Vnvenol,etrrcoewl aeon(
0.40
M Headwmerin aml<lcmwl
d+al,oe
MATERIAL Concrete f'
1
151 TVI Luedmdmmatream mnlmlm Um.deplM1in cM1annel
BAD
Owlmre
DOTTOMT'0.013
161 'mmue+D/2)(whicM1 erxrss pr<wcn
0.40
. erNm lxe
BARRELNI
IT.1 Hwll.ke T(29n2LI.I.13)IIV2ngrnrlm 1a ,gacho,
8.1 t
0.35
hz Tillw
6. Agno,R,ow
(9.) VIA�s81n.x
C 11N,bd Areas
COMMENTS: Ulcpnpulatbns have poen perbmed udnO HY-8. TM1is loon is brinlomaional purposes only and aY values mach lM1ese calculaleO.n HV -8.
A
CULVERT WEIGHTED C CALCULATIONS
Boar's Head Connector Road
A ... County
BE Derry
alter Resources En9lneedn9
Append x 6E.1 of the V rgmre Department of Tranap Mb.. Dramage Manual
Rational Hethod Values I., Varlou. Selected Land Use.
Deacnetlen etArea
CVelue Ran
Area(A)
:value diel
CxA
Rlght<NW.y Lard Uaa
Culvert Calculator Report
1. Paved
0.9
0.90 028
025
2. Lawns
025-0.35
025
3. Forest
020-0.30
0.30 0.01
0.00
4. steep Grau (2:1)
O.d00.]0
0.40
5. shoulder and Ditch Areas
0850.50
Bw 0.29
0.15
UMmMe Land Use
1. Bulsness: Indusldal and Corno-ill
0.80-0.80
BAD
0.93
2. Aparhned and Townhomes
0.65U.T5
a01w.m
0.75
u.eu
1.09
-4 Re kl nbel
558es ft
Dischalea
2.00 ch
-bb 10.000 xl. It
O.d00. W
0.50
cls
4ots 12,000 sq. ft
o.ao-0.d5
0.40
558.70 fl
-lots 1],000 sq. n
0.35-0.45
BAD
5W.]0 It
lou tl2 acre or more
0.30-0.40
0.40
Outlet Control
5. P,", Cemetedes and Uninproved In,
0.201.35
0.35
W. Contrd
6. Agno,R,ow
C 11N,bd Areas
0.50470
0.50
Pasture
085-0.45
0.35
55].90 It
Upstream I -an
558.09 It
Downstream Invert
55].99 It
L..M
15.00 A
T.W. - 0.s6
0.40
C(W.ghbd)=Tmzl BE!,sl
_
DAQ -
0.1106667 Nfl
Tota Aro,
0.58
To(min)
5
P.I.
try
to -y
0.80 fl
uwnn
s.00
aw
0.80 A
o parson moor
1
f
0.61 %
O Isla)
2A
2.7
0.76 fl
CULVERT 2- YEAR AND l0- YEAR CALCULATIONS
F
A
Dewberry®
Dewberry Engineers Inc.
460.5 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23060
804.290.]95] (PHONE)
604:290.]923(FAX)
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Lic. 0.4611 ,Z
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SCALE
SCALE:1" - 50'
0 50' 100'
REVISIONS
DRAWN BY TMR
APPROVED BY OMK
CHECKED BY MCT
DATE NOVEMBER 2017
TITLE
CULVERT MAPS
AND
CALCULATIONS
PROJECT NO. 50097555
C9.10
SHEET NO. OF
Culvert Calculator Report
Culvert Calculator Report
STR. 1-9 (2 YEAR)
STR. 1-9 (10 YEAR)
SdW For: Headwater Ebvason
SONG For: Headwater Ebvati.n
Calan summary
CUN.n Summary
Alkw,bb HW Elevation
560.00 IT
Head V ft, DapthMeght
0.93
Allowabb HW ElavatloR
580.00 ft
Heacwaler DaplhMeghl
1.09
Conpubd Headwater Elevatbn
558es ft
Dischalea
2.00 ch
Computed HBa Nano, Elevation
559.08 ft
Dis s,p2.]o
cls
Inkt Conhol HW Elev.
558.87 ft
TalNvetarEkvab.n
558.70 fl
Inlot control HW El -559.06
ft
T.ter Elevation
5W.]0 It
Wal Control NVd Eley.
558.93 It
Control Trye
Outlet Control
Outlet Control HW Ebv.
Seam It
Contol Type
W. Contrd
Grdee
Grades
Up- Invert
U. fl
Downstream Inver
55].90 It
Upstream I -an
558.09 It
Downstream Invert
55].99 It
L..M
15.00 A
Constmcod Slope
0.W6667 fNt
Length
15.00 ft
Contacted Slope
0.1106667 Nfl
Hykaub Profile
Hyb,ufic Prorib
P.I.
M1
Depth, Duwnstream
0.80 fl
Profile
Ml
Depb, Downstream
0.80 A
Style Type
Mlp
Hormel 2plh
0.61 %
Slope Type
MIb
NoTral Depth
0.76 fl
Fkw Regime
Subont"I
Cntlpal Dspth
0.00 ft
Flaw Regime
SubclNcal
CrIbol Depth
0.]0 fl
Veocity Downstream
2.97 Ns
Cdcal Slope
BBISEE3 N%
Vebcfty Downstream
4.01 No
CnINa Slgpe
0.0011061 Nfl
Se;tlon Shape
Circular
Monologs Coelf iant
0.013
Sectbn Shape
Circular
Mannings Goenicient
0.013
Sxlign Matarel
Concreb
Span
1.00 fl
Sectbn Material
Concrete
Spar
1.00 %
se:0on size
121nch
Rise
1.00 fl
Sectbn Slze
12 inch
Rise
1.00 ft
N -W, S.cgon.
1
Number Sections
t
0- Control P.Pertles
Ou. Carol P.Penlee
Odat Cormol516V Ebv.
558.93 ft
Upstream Velocity Head
0.17 %
Outlet Conhol HW Ebv.
559.09 8
Upstieem Velocity Head
0.26 ft
Ke
0.20
Entrance Loss
0.03 n
Ka
0.20
Entrelce Loss
0.05 ft
Inb Contrd Prop.rtbs
Intl Coned pno,-las
Inkt Control HW E6,558B7ft
Flaw Codrol
WA
Inbt Conal HW El",
559.08%
RowConool
NA
InMTypo Beveled dnd.
45°Oeveb
Area Ful
0.8 In
Inbt Type Beveled
nine, 45°bevels
A -Full
0.6 r'
K
0.00180
HDS5CIW
3
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0.00180
HDS5Chan
3
M
250000
HDS5 Suis
A
M
2.50000
HOES Scale
A
C
0.03000
EquabonForm
1
C
0.03000
Equmon Form
1
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0.74000
Y
0.74000
A
Dewberry®
Dewberry Engineers Inc.
460.5 LAKE BROOK DRIVE
SUITE 200
GLEN ALLEN, VA 23060
804.290.]95] (PHONE)
604:290.]923(FAX)
C) Il
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I L L
X00 0o
dUU J�
2i LL LLj LLJ
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SEAL °�,t1gALTX°pL .
MCOMAS
Lic. 0.4611 ,Z
2�/�°NAL
SCALE
SCALE:1" - 50'
0 50' 100'
REVISIONS
DRAWN BY TMR
APPROVED BY OMK
CHECKED BY MCT
DATE NOVEMBER 2017
TITLE
CULVERT MAPS
AND
CALCULATIONS
PROJECT NO. 50097555
C9.10
SHEET NO. OF
Section 6. Pollution Prevention Plan.
(reference County Code 17-404 and State Regulation 9VAC25-880-70 part II section A.4)
A. Plan showing pollution activities and prevention practices
(Provide a reduced 11x17 copy of a site plan on which all of the following activity locations are clearly
marked. Keep this plan up-to-date with ongoing site changes and inspections.)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
B. Sources of Pollutants, locations, and prevention practices
Pollutant, or Pollutant
Location on site
Prevention Practices,
Generating Activity
Control Measures
C. Sources of Pollutants, continued. Common activities and minimum control and prevention
ractices
Pollutant, or Pollutant
Location on site
Prevention Practices,
Generating Activity
Control Measures
Follow Erosion and Sediment Control
Clearing, grading, excavating, and un-
Land disturbance area
Plan. Dispose of clearing debris at
stabilized areas
acceptable disposal sites. Seed and mulch,
or sod within 7 days of land clearing
Cover storm drain inlets and use drip
Paving operations
Roads and driveways
pans and absorbent/oil dry for all paving
machines to limit leaks and spills
Direct concrete wash water into a leak -
Concrete washout
Current location and detail shown
proof container or leak -proof settling
and cement waste
on plan
basin that is designed so that no overflows
can occur
Enclose or cover material storage areas.
Mix paint indoors in a containment area or
Structure construction, stucco,
Structures
in a flat unpaved area. Prevent the
painting, and cleaning
discharge of soaps, solvents, detergents
and wash water, paint, form release oils
and curing compounds.
Water shall be filtered, settled or similarly
Dewatering operations
Dewatering sites shown on plan
treated prior to discharge as shown on
plan.
Designated areas for material delivery
Material delivery and storage
Designated area shown on plan
and storage. Placed near construction
entrances, away from waterways and
drainage paths
Material use during building process
Building areas
Follow manufacturer's instructions. MSDS's attached.
waste collection area will not receive a
substantial amount of runoff from upland
Solid waste disposal
Current designated container areas
areas and does not drain directly to a
on plan
waterway. Containers have lids covered
before periods of rain, or are in a covered
area. Scheduled collection to prevent
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
Pollutant, or Pollutant
Location on site
Prevention Practices,
Generating Activity
Control Measures
overfilling. MATERIALS NOT TO BE
BURIED ON-SITE
Convenient and well-maintained
portable sanitary facilities will be
Sanitary waste
Current locations shown on plan
provided, and located away from
waterways or inlets. Such facilities shall
be regularly maintained.
Apply fertilizers in accordance with
Landscaping operations
Landscape areas shown on plan
manufacturer's recommendations and
not during rainfall events
To be treated in a sediment basin or
Wash Waters
Wash areas shown on plan
better control as specified on plan.
Minimize the discharge of pollutants
from equipment and vehicle washing
Vehicle and equipment washing
Designated areas and details shown on
Provide containment and filtering for all
plan
wash waters per the plan
Minimization of exposure to precipitation and stormwater. 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.
(Identify all non-stormwater discharges to occur on your site. Keep this plan up-to-date with ongoing site
changes and inspections. See CGP, 9VAC25-880-70 section E for examples of non-stormwater discharges.)
Q
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
E. Persons responsible for pollution prevention practices
(Provide the names and contact information for all persons responsible for prevention practices as listed above.)
F. Response and reporting practices
Minimize discharges from spills and leaks. Minimize the discharge of pollutants from spills and leaks and implement chemical
spill and leak prevention and response procedures as follows.
Respond to all spills, leaks and discharges as follows;
Report all spills, leaks and discharges as follows;
(Provide detailed response and reporting practices according to 9VAC25-880-70, Part 11, section A.4.e.)
G. Pollution Prevention Awareness
(Describe training and procedures to provide awareness and compliance for all measures in this
document; waste management, wash waters, prevention measures, etc.)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
6.0 POLLUTION PREVENTION PLAN
6.1 POTENTIAL SOURCES OF POLLUTION
Soil disturbing activities associated with the construction of the Temporary Golf Course connector
road project potentially affect the quality of stormwater runoff. Therefore, proper erosion and
sediment control measures will be installed prior to construction to manage stormwater and
sediment. The location of potential pollutant sources should be documented and updated on the
plans for the project.
The limit of disturbance is the area identified as the likely location where potential spills and leaks
may occur.
6.2 POLICIES AND PROCEDURES
The operator should assure that employees are aware of applicable wastes, including wash water,
disposal practices, and applicable disposal locations of such wastes, in order to comply with the
conditions of the Permit. Personnel should be educated in spill prevention, area of possible
pollution, and spill response procedures.
6.3 MANAGEMENT PRACTICES AND OTHER CONTROLS
6.3.1 Good Housekeeping
Good housekeeping requires all personnel to maintain cleanliness and order in areas that could
cause stormwater contamination.
The following is a list of techniques that personnel should incorporate as good housekeeping
practices on a daily basis:
• Keep outside areas neat and orderly; clean drips and/or fix leaks from on-site equipment
and inspect regularly;
• Maintain a supply of spill response equipment;
• Use watering truck to minimize dust; and,
• Pick up windblown debris.
6.3.2 Minimizing Exposure
Where practicable, protect industrial materials and activities with a storm -resistant shelter to
prevent exposure to rain, snow, snowmelt, or runoff.
6.3.3 Existing Vegetation
Preservation of existing vegetation will be practiced where possible. Areas not to be disturbed are
shown on the Major Site Development Plans set and shall be delineated and clearly marked as a
first step in construction.
6.4 SPILL PREVENTION AND RESPONSE
The following practices will be followed for spill prevention and cleanup:
• Products will be kept in original containers with the original manufacturer's label, where
possible, unless they are not re -sealable.
• Materials stored on-site will be stored in a neat, orderly manner in their appropriate
containers. Materials that have the potential for contaminating runoff during storm
events will be stored in their appropriate watertight containers, under a canopy, tarpaulin,
shrink-wrapped, or otherwise precluded from direct exposure to precipitation.
• Whenever possible, all of a product will be used before disposing of the container. If
surplus product must be disposed of, manufacturers' and/or local and State recommended
methods for proper disposal will be followed.
• Manufacturers' recommendations for proper use and disposal will be followed.
• If applicable, manufacturers' recommended methods for spill cleanup will be maintained
on-site and site personnel will be made aware of the procedures and the location of the
information and cleanup supplies.
• If applicable, Materials and equipment necessary for spill cleanup will be kept in the
material storage area on-site. Equipment and materials may include, but not be limited
to, cleanup kits, brooms, dust pans, mops, rags, gloves, goggles, dirt to contain spills,
containment boom, absorbent material (e.g., hay, kitty litter, sand, sawdust), and plastic
and metal trash containers.
• Spills will be cleaned up immediately after discovery.
• In the event of a discharge of a potential pollutant or spill of a hazardous substance, the
following steps should be taken:
1. Eliminate potential spark sources;
2. If possible and safe to do so, identify and shut down the source of the discharge to
stop the flow;
3. Contain the discharge with sorbent, berms, fences, trenches, sandbags, or other
material and ensure the area will be kept well ventilated. Personnel will wear
appropriate protective clothing to prevent injury from contact with a hazardous
substance during cleanup operations;
4. Contact the SWPPP Coordinator or his/her designee (Division Manager) or his/her
alternate;
5. Contact regulatory authorities and the response organization as required by
regulatory standards; and
6. Collect and dispose of recovered products according to applicable regulations.
• Spills of toxic or hazardous material will be reported to the appropriate State and local
government agency, as required by regulatory standards.
• The contractor or his representative will be responsible for spill prevention and
coordination.
• The spill prevention and control procedures will be implemented once construction
begins on-site.
When a spill occurs, the individuals/agencies in Table 6 shall be considered for notification.
Table 1 — Spill Notification Table
Person/Agency
Contact Information
Local MS4 (if applicable)
DEQ Central Office
629 East Main Street
Richmond, VA 23219
Statewide main office
General:
(804) 698-4000
DEQ Valley Regional Office
4411 Early Road
Albemarle, Augusta, Bath, Clarke, Fluvanna, Frederick, Greene,
Harrisonburg, VA 22801
Highland, Nelson, Page, Rockbridge, Rockingham, Shenandoah and
General:
Warren; and the cities of Buena Vista, Charlottesville, Harrisonburg,
(540) 574-7800
Lexington, Staunton, Waynesboro and Winchester.
Pollution Response Program:
(276) 676-4846
1-800-468-8892 (24 hour #)
VA Department of Emergency Management (DEM)
911 (24 hour #)
Local Emergency Response
6.5 SPILL REPORTING
6.5.1 Reports of Unauthorized Discharges
Any operator who discharges or causes or allows a discharge of sewage, industrial waste, other
wastes, or any noxious or deleterious substance or a hazardous substance or oil in an amount equal
to or in excess of a reportable quantity established under either 40 CFR Part 110 (Discharge of
Oil), 40 CFR Part 117 (Reportable Quantities of Hazardous Substances), 40 CFR Part 302
(Reporting Reportable Quantities), or § 62.1-44.34:19 (Reporting of Discharge) of the Code of
Virginia that occurs during a 24-hour period into or upon surface waters or who discharges or
causes or allows a discharge that may reasonably be expected to enter surface waters, shall notify
the DEQ of the discharge immediately upon discovery of the discharge, but in no case later than
within 24 hours after said discovery. A written report of the unauthorized discharge shall be
submitted to the DEQ and the VSMP authority within 5 days of discovery of the discharge, and
contain the information listed in Part III G (Reports of unauthorized discharges) of the Permit.
Spill notification procedures will be reviewed by all key personnel during the Project
Training/Permit Rollout process.
A Spill Report Form is provided at the end of this section.
6.5.2 Reports of Unusual or Extraordinary Discharges
If any unusual or extraordinary discharge, including a "bypass" or "upset" as defined in the permit,
should occur from a facility and the discharge enters or could be expected to enter surface waters,
the operator shall promptly notify, in no case later than within 24 hours, the DEQ and the VSMP
authority by telephone after the discovery of the discharge. This notification shall provide
available details of the incident, including any adverse effects on aquatic life and the known
number of fish killed. The operator shall reduce the report to writing and shall submit it to the
DEQ and the VSMP authority within 5 days of discovery of the discharge in accordance with Part
111 1.2 of the Permit. Unusual and extraordinary discharges include, but are not limited to, any
discharge resulting from:
a. Unusual spillage of materials resulting directly or indirectly from processing operations;
b. Breakdown of processing or accessory equipment;
c. Failure or taking out of service of some or all of the facilities; and
d. Flooding or other acts of nature.
6.5.3 Reports of Noncompliance
The operator shall report any noncompliance that may adversely affect surface waters or endanger
public health.
• An oral report to the DEQ and the VSMP authority shall be provided within 24 hours
from the time the operator becomes aware of the circumstances. The oral report shall
contain the information specified in Part 111 1. 1 of the Permit.
• A written report shall be submitted within 5 days and shall contain the information
specified in Part 111 1.2 of the Permit. The DEQ may waive the written report on a case-
by-case basis for reports of noncompliance under Part III I (Reports of Noncompliance)
of the Permit if the oral report has been received within 24 hours and no adverse impact
on surface waters has been reported.
• The operator shall report instances of noncompliance not reported under Part III I.1 or
I.2 of the Permit in writing as part of the SWPPP. The reports shall contain the
information listed in Part 111 1.2 of the Permit.
• Where the operator becomes aware of a failure to submit any relevant facts, or submittal
of incorrect information in any report, including a registration statement, to the DEQ or
the VSMP authority, the operator shall promptly submit such facts or correct information.
NOTE: The reports required in Parts III G (Reports of Unauthorized Discharges), H (Reports of
Unusual or Extraordinary Discharges), and I (Reports of Noncompliance) of the CGP shall be
made to the DEQ and the VSMP authority. Reports may be made by telephone, email, or by fax.
For reports outside normal working hours, leaving a recorded message shall fulfill the immediate
reporting requirement. For emergencies, the Virginia Department of Emergency Management
maintains a 24-hour telephone service at 1-800-468-8892.
6.6 FUELING AND MAINTENANCE OF EQUIPMENT OR VEHICLES
• The locations of all vehicle fueling areas will be documented in the SWPPP. These
locations can be identified on the E&S Plan provided in Appendix C of the SWPPP. As
the vehicle fueling facilities move throughout the project, areas need to be shown, dated,
and signed. If vehicle fueling will not be part of the project, a written statement indicating
that "no on-site vehicle fueling will be part of this project" should be added on the plans
or included in the Log of Changes in Appendix G of the SWPPP.
• On-site vehicles will be monitored for leaks and receive regular preventive maintenance
to reduce the chance of leakage.
• Refueling, repairs, and changing of equipment and vehicle fluids will be conducted in a
manner to reduce the potential for contamination of on-site resources. Care should be
taken, where feasible, to avoid activities within ±50 feet of storm drains, wetlands,
streams, water bodies, tree preservation areas, or any other environmentally sensitive
areas.
• Secondary containment and spill response kits should be provided on-site.
• These pollution prevention practices and procedures should be implemented to prevent
the discharge of spilled and leaked fuels and chemicals from vehicle fueling and
maintenance activities (e.g., providing secondary containment such as spill berms, decks,
spill containment pallets, providing cover where appropriate, and having spill kits readily
available).
• Petroleum products will be stored in tightly sealed containers that are clearly labeled.
• Any asphalt substances used on-site will be applied according to the manufacturer's
recommendations.
• The contractor will regularly inspect the site to ensure that proper disposal methods of
used antifreeze, oils, filters, and other hazardous materials are followed.
6.7 WASHING OF EQUIPMENT AND VEHICLES
• Vehicle washing should not use soaps, solvents, or detergents.
• Construction vehicle washing will only occur at approved locations in accordance with
State and local regulations. The Guidelines for Vehicle and Equipment Washing is
included in Appendix I.
• Tire washing may be necessary as part of the site's construction entrance in order to
minimize the transport of sediment by vehicular traffic onto a paved surface. If tire
washing is necessary, provisions must be made to intercept the wash water and trap the
sediment so it can be collected and stabilized. Wash water must be diverted away from
the construction entrance to an approved settling area to remove sediment.
Pollution prevention practices and procedures should be implemented that will minimize
the discharge of pollutants from vehicle and equipment washing, wheel wash water, and
other types of washing (e.g., locating activities away from surface waters and stormwater
inlets, directing wash waters to sediment basins or traps, using filtration devices such as
filter bags or sand filters, or using similarly effective controls), and the wash water should
be filtered, settled, or similarly treated prior to discharge.
• Physical separation should be provided between surface waters and inlets.
6.8 STORAGE, HANDLING, AND DISPOSAL OF CONSTRUCTION PRODUCTS,
MATERIALS, AND WASTES
In addition to the practices listed below, the practices in Section 5.4 - Spill Prevention and
Response apply to the storage, handling, and disposal of construction products, materials, and
wastes. Examples of these items include asphalt sealants, copper flashing, scrap building
materials, adhesives, concrete admixtures, pesticides, herbicides, fertilizers, landscape materials,
timber, pipe and electrical cuttings, diesel fuel, oil and hydraulic fluids, as well as paint and other
petroleum products.
• Waste materials will be collected and stored in a proper receptacle in accordance with
local and State solid waste management regulations. Trash and construction debris from
the site will be deposited in dumpsters. The locations of the dumpsters shall be
documented in the SWPPP once determined in the field. These locations will be
annotated on the E&S Plan. The trash will be hauled to an appropriate waste disposal
site. No construction waste materials shall be buried on-site. Project personnel shall be
instructed regarding the correct procedure for waste disposal.
• Chemical or petroleum products will not be mixed with one another unless recommended
by the manufacturer.
• On-site equipment shall be checked for leaks and receive regular preventive maintenance.
• Hazardous waste materials will be disposed of in the manner specified by the
manufacturer and as required by local or State regulation. Site personnel will be
instructed in these practices.
• Portable sanitary units will be utilized at various locations along the project site. The
locations of the portable sanitary units shall be documented in the SWPPP once
determined in the field. As (or if) the units move, the movement of the facilities shall be
documented in the SWPPP with initials of the individual authorizing the movement and
a corresponding date. These locations will be annotated on the E&S Plans. Sanitary
waste will be collected from the portable units as required by local and State regulation.
• Portable sanitary units shall not be located in or adjacent to streams, drop inlets,
stormwater flow paths, and floodplains.
6.9 WASHING OF CONCRETE OR OTHER MATERIALS
• Concrete trucks will only wash out or discharge surplus concrete or drum wash water at
approved locations in accordance with State and local regulations.
• The discharge of wastewater from the washout of concrete is prohibited.
• Direct concrete 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.
• See Environmental Protection Agency (EPA) Fact Sheet for concrete washout at
http://www.epa.gov/npdes/pubs/concretewashout.pdf (provided in Appendix I of the
SWPPP).
• Washout areas are expected to be at designated construction entrance locations. The
locations of the concrete washout areas shall be documented in the SWPPP once
determined in the field. These locations should be identified on the E&S Plan in
Appendix C of the SWPPP.
Project Type and Location:
Date/Time of Spill:
Virginia Spill Report Form
Time Incident Contained
Spill Location and Events Leading to Spill
Material Spilled:
Source of Spill:
Amount Spilled
Amount Spilled to Waterway
Surface Area of Impacted Media in sq. ft.:
Type of Media (Soil or Pavement):
Corrective Action Taken:
Action Take to Prevent Future Spills
Agencies Notified
Modifications to Storm Water Pollution Prevention Plan:
"I certify under penalty of law that I have read and understand this document and that this
document and all attachments were prepared in accordance with a system designed to
assure that qualified personnel properly gathered and evaluated 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."
Signature of Reporter
Print Name/Title
Date
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Spill Response Contractors Located in Virginia
The following list is not meant to be all inclusive of all Spill Response Contractors
in the state of Virginia nor is it meant to act as an endorsement of any of those
listed below, This information is meant strictly for informational purposes.
Company
Contact Information
A & A Environmental Services/Perma- Fix
(540) 288-1176
Stafford, VA 22554
(800) 404-8037
540 288-1154
fax
Accurate Marine Environmental, Inc.
(757) 393-5840
Portsmouth, VA 23704
757 393-5845
Coastal Environmental Services, Inc.
(757) 488-4244
Suffolk, VA 23435
757 488-4622
fax
Clean Harbors Environmental
(804) 452-1800
Prince George, VA 23875
(800) 645-8265
804 452-1700
fax
Clean Harbors Environmental.
(757) 543-9240
Chesapeake, VA 23324
(800) 645-8265
757 543-8486
fax
Clean Venture, Inc.
(757) 543-0614
Chesapeake, VA 23324
(757)543-0614
fax
C & M Industries
(757) 543-8775
Chesapeake, VA 23324
757 545-4386
Cliff Berry, Inc (CBI)
(757) 484-6303
Portsmouth, VA 23703
(866) 484-0500
757 484-0524
fax
E NSAT Corporation
(540) 823-9083
Culpeper, VA 22701
(800) 753-6728
540 825-9087
Environmental Options, Inc.
(540) 483-3920
Rocky Mount, VA 24151
540 483-3855
fax
Gemini Oil Co.
(757) 543-5718
Norfolk, VA 23523
IMS, Inc. / Hepaco
(800) 888-7689
Chesapeake, VA 23320
(757) 436-3000
757 436-5266
fax
Company -
Contact Information
IMS, Inc./ Hepaco
(800) 888-7689
Fredericksburg, VA 22405
(540) 372-9890
540 372-9889
fax
IMS, Inc. I Hepaco
(800) 888-7689
Richmond, VA 23234
(804) 275-5380
804 275-5384
IMS, Inc. / Hepaco
(800) 888-7689
Norfolk, VA 23501
(757) 543-5718
757 543-4561
fax
LCM Corporation
(800) 774-5583
Hampton, VA 23670
(757) 3805583
757 380-9146
fax
LCM Corporation
(800) 774-5583
Roanoke, VA 24034
(540) 344-5583
540 342-9438
fax
Moran Environmental Recovery
(757) 216-8836
Norfolk, VA 23504
(866) 682-5970
757 216-8839
fax
MSRC
(703) 326-5600
Herndon, VA 20170
(800) 645-7745
703 326-5660
fax
MSRC
(757) 464-2866
Virginia Beach, VA 23455
(800) 645-7745
757 460-4586
fax
Marshall Miller & Associates, Inc.
(276) 322-5467
Bluefield, VA 24605
(800) 733-5467
276 322-1510
fax
PetroChem Recovery Services
(757) 627-8791
Norfolk, VA 23501
(800) 723-6951
757 640-1261
fax
S.C. Rossi & Co., Inc.
(540) 342-6600
Roanoke, VA 24014
540 342-6611
fax
W.E.L. Inc_
(434) 993-2210
Concord,'VA 24538
(800) 847-2455
434 993-2287
fax
W.L. Black & Assoc.
(866) 238-7839
Chesapeake, VA 23323
(757) 487-5245
757 487-7114
fax
Section 7. Discharges to impaired waters, surface waters within an applicable TMDL
wasteload allocation, and exceptional waters.
(Provide detailed measures for any applicable TMDL)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
Virginia DEQ - Water Monitoring - 2014 impaired Waters Fact Sheets Page 1 of 1
2014 Impaired Waters
Category 4 & 5 by Impaired Area ID*
��Ili[il�l � l)I.I'.11t1 �Ik �I +11
James River Basin
Cause Group Code: H28R-09-BEN - Morey Creek
Location: Morey Creek from the headwaters downstream to its confluence with Moores Creek. (Start Mile: 2.93 End
Mile: 0.00 Total Impaired Size: 2.93 Miles)
City/County Albemarle Co.
Use(s): Aquatic Life
Cause(s) / Benthic-Macroinvertebrate Bioassessments / 5A
VA Category:
This segment is impaired due to violations of the General Standard for Benthics at station: 2-MOY-MRY01-SW (Impaired for
VSCI). Initial Listing Date: 2010.
Cause Cycle TMDL
Assessment Unit Water name Location Description Category Cause Name First Schedule Size
Listed
Morey Creek from the Benthic-
VAV-H28R_MOY01A02 Morey Creek headwaters downstream to its 5A Macroinvertebrate 2010 2022 2.93
confluence with Moore's Creek. Bioassessments
Morey Creek Estuary Reservoir River
Impaired area ID: VAV-H28R-09 (sq. miles) (acres) (miles)
Benthic-Macroinvertebrate Bioassessments / 5A 2.93
Aquatic Life Total impaired size by water type:
Sources:
• Non -Point Source
Narrative descriptions, location and city/county describe the entire extent of the impairment. Sizes may not represent the total size of the
impairment.
http://www.deq.vrginia.gov/FS2014/FactSheets.aspx?id=VAV-H28R MOYOIA02&styl... 11/17/2017
Section 8. Qualified personnel
The following personnel are responsible for inspections;
(Provide the name, telephone number, and qualifications of the qualified personnel conducting inspections.)
Issued — 10/2014 Stormwater Pollution Prevention Plan (S WPPP) Albemarle County
Section 9. Signed Certification
(Provide certification according to 9VAC25-870-370)
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."
Operator Name: Chris Schooley
Company: University of Virginia Foundation
Title:ONovember2l,201, E tate Proje ana r
Signature:
Date:
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
Section 10. Delegation of authority.
(Provide the persons or positions with authority to sign inspection reports or to modify the stormwater pollution
prevention plan. A formal, signed delegation of authority is needed.)
Delegation of Authority
1, Chris Schooley (name), hereby designate the person or specifically described position below to be a duly authorized
representative for the put -pose of overseeing compliance with environmental requirements, including the Construction General Permit,
at the 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)
(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".
Operator Name: Chris Schooley
Company: Real Estate Project Manager
Title: I st to Project Magager
Signature: (i
Date: November 21, 20
7c --
Issued —10/2014 Stormwater Pollution Prevention Plan (S WPPP) Albemarle County
Section 11. General permit copy
(Provide a copy of the construction general permit, 9VAC25-880)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County
CHAPTER 880
GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION
ACTIVITIES
9VAC25-880-1. Definitions.
The words and terms used in this chapter shall have the meanings defined in the Virginia
Stormwater Management Act (Article 2.3 (§ 62.1-44.15:24 et seq.) of Chapter 3.1 of Title 62.1 of
the Code of Virginia), this chapter, and 9VAC25-870 unless the context clearly indicates
otherwise, except as otherwise specified in this section. Terms not defined in the Act, this
chapter, or 9VAC25-870 shall have the meaning attributed to them in the federal Clean Water
Act (33 USC § 1251 et seq.) (CWA). For the purposes of this chapter:
"Business day" means Monday through Friday excluding state holidays.
"Commencement of land disturbance" means the initial disturbance of soils associated with
clearing, grading, or excavating activities or other construction activities (e.g., stockpiling of fill
material).
"Construction site" means the land where any land -disturbing activity is physically located or
conducted, including any adjacent land used or preserved in connection with the land -disturbing
activity.
"Final stabilization" means that one of the following situations has occurred:
1. All soil disturbing activities at the site have been completed and a permanent
vegetative cover has been established on denuded areas not otherwise permanently
stabilized. Permanent vegetation shall not be considered established until a ground
cover is achieved that is uniform (e.g., evenly distributed), mature enough to survive,
and will inhibit erosion.
2. For individual lots in residential construction, final stabilization can occur by either:
a. The homebuilder completing final stabilization as specified in subdivision 1 of this
definition; or
b. The homebuilder establishing temporary soil stabilization, including perimeter
controls for an individual lot prior to occupation of the home by the homeowner, and
informing the homeowner of the need for, and benefits of, final stabilization.
3. For construction projects on land used for agricultural purposes , final stabilization
may be accomplished by returning the disturbed land to its preconstruction agricultural
use. Areas disturbed that were not previously used for agricultural activities, such as
buffer strips immediately adjacent to surface waters, and areas that are not being
returned to their preconstruction agricultural use must meet the final stabilization criteria
specified in subdivision 1 or 2 of this definition.
"Immediately" means as soon as practicable, but no later than the end of the next business
day, following the day when the land -disturbing activities have temporarily or permanently
ceased. In the context of this general permit, "immediately" is used to define the deadline for
initiating stabilization measures.
"Impaired waters" means surface waters identified as impaired on the 2012 § 305(b)/303(d)
Water Quality Assessment Integrated Report.
"Infeasible" means not technologically possible or not economically practicable and
achievable in light of best industry practices.
"Initiation of stabilization activities" means:
1. Prepping the soil for vegetative or nonvegetative stabilization;
Page 1 of 29
9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
2. Applying mulch or other nonvegetative product to the exposed area;
3. Seeding or planting the exposed area;
4. Starting any of the above activities on a portion of the area to be stabilized, but not on
the entire area; or
5. Finalizing arrangements to have the stabilization product fully installed in compliance
with the applicable deadline for completing stabilization.
This list is not exhaustive.
"Measurable storm event" means a rainfall event producing 0.25 inches of rain or greater
over 24 hours.
"Stabilized" means land that has been treated to withstand normal exposure to natural
forces without incurring erosion damage.
9VAC25-880-10. Purpose.
This general permit regulation governs stormwater discharges from regulated construction
activities. For the purposes of this chapter, these discharges are defined as stormwater
discharges associated with large construction activity, and stormwater discharges associated
with small construction activity. Stormwater discharges associated with other types of industrial
activity shall not have coverage under this general permit. This general permit covers only
discharges through a point source to surface waters or through a municipal or nonmunicipal
separate storm sewer system to surface waters. Stormwater discharges associated with
industrial activity that originate from construction activities that have been completed and the
site has undergone final stabilization are not authorized by this general permit.
9VAC25-880-15. Applicability of incorporated references based on the dates that they
became effective.
Except as noted, when a regulation of the United States set forth in the Code of Federal
Regulations is referenced and incorporated herein, that regulation shall be as it exists and has
been published in the July 1, 2013, update.
9VAC25-880-20. Effective date of general permit.
This general permit is effective on July 1, 2014. The general permit will expire on June 30,
2019. This general permit is effective for any covered operator upon compliance with all
provisions of 9VAC25-880-30.
9VAC25-880-30. Authorization to discharge.
A. Any operator governed by this general permit is authorized to discharge to surface waters
of the Commonwealth of Virginia provided that:
1. The operator submits a complete and accurate registration statement, if required to do
so, in accordance with 9VAC25-880-50 and receives acceptance of the registration by
the board;
2. The operator submits any permit fees, if required to do so, in accordance with
9VAC25-870-700 et seq.;
3. The operator complies with the applicable requirements of 9VAC25-880-70;
4. The operator obtains approval of:
Page 2 of 29
9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
a. An erosion and sediment control plan from the appropriate VESCP authority as
authorized under the Erosion and Sediment Control Regulations (9VAC25-840),
unless the operator receives from the VESCP an "agreement in lieu of a plan" as
defined in 9VAC25-840-10 or prepares the erosion and sediment control plan in
accordance with annual standards and specifications approved by the department.
The operator of any land -disturbing activity that is not required to obtain erosion and
sediment control plan approval from a VESCP authority or is not required to adopt
department -approved annual standards and specifications shall submit the erosion
and sediment control plan to the department for review and approval; and
b. A stormwater management plan from the appropriate VSMP authority as
authorized under the Virginia Stormwater Management Program (VSMP) Regulation
(9VAC25-870), unless the operator prepares the stormwater management plan in
accordance with annual standards and specifications approved by the department.
The operator of any land -disturbing activity that is not required to obtain stormwater
management plan approval from a VSMP authority or is not required to adopt
department -approved annual standards and specifications shall submit the
stormwater management plan to the department for review and approval; and
5. The board has not notified the operator that the discharge is not eligible for coverage
in accordance with subsection B of this section.
B. The board will notify an operator that the discharge is not eligible for coverage under this
general permit in the event of any of the following:
1. The operator is required to obtain an individual permit in accordance with 9VAC25-
870-410 B;
2. The operator is proposing discharges to surface waters specifically named in other
board regulations that prohibit such discharges;
3. The discharge causes, may reasonably be expected to cause, or contributes to a
violation of water quality standards (9VAC25-260);
4. The discharge violates or would violate the antidegradation policy in the Water Quality
Standards (9VAC25-260-30) ; or
5. The discharge is not consistent with the assumptions and requirements of an
applicable TMDL approved prior to the term of this general permit.
C. This general permit also authorizes stormwater discharges from support activities (e.g.,
concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated
material disposal areas, borrow areas) located on-site or off-site provided that:
1. The support activity is directly related to a construction activity that is required to have
general permit coverage for discharges of stormwater from construction activities;
2. The support activity is not a commercial operation , nor does it serve multiple
unrelated construction activities by different operators;
3. The support activity does not operate beyond the completion of the last construction
activity it supports;
4. The support activity is identified in the registration statement at the time of general
permit coverage;
5. Appropriate control measures are identified in a stormwater pollution prevention plan
and implemented to address the discharges from the support activity areas; and
6. All applicable, state, federal, and local approvals are obtained for the support activity.
D. Support activities located off-site are not required to be covered under this general
permit. Discharges of stormwater from off-site support activities may be authorized under
Page 3 of 29
9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
another state or VPDES permit. Where stormwater discharges from off-site support activities
are not authorized under this general permit, the land area of the off-site support activity need
not be included in determining the total land disturbance acreage of the construction activity
seeking general permit coverage.
E. Discharges authorized by this general permit may be commingled with other sources of
stormwater that are not required to be covered under a state permit, so long as the commingled
discharge is in compliance with this general permit. Discharges authorized by a separate state
or VPDES permit may be commingled with discharges authorized by this general permit so long
as all such discharges comply with all applicable state and VPDES permit requirements.
F. Authorized nonstormwater discharges. The following nonstormwater discharges from
construction activities are authorized by this general permit:
1. Discharges from firefighting activities;
2. Fire hydrant flushings;
3. Water used to wash vehicles or equipment where soaps, solvents, or detergents have
not been used and the wash water has been filtered, settled, or similarly treated prior to
discharge;
4. Water used to control dust that has been filtered, settled, or similarly treated prior to
discharge;
5. Potable water source, including uncontaminated waterline flushings;
6. Routine external building wash down where soaps, solvents, or detergents have not
been used and the wash water has been filtered, settled, or similarly treated prior to
discharge;
7. Pavement wash water where spills or leaks of toxic or hazardous materials have not
occurred (or where all spilled or leaked material has been removed prior to washing);
where soaps, solvents, or detergents have not been used; and where the wash water
has been filtered, settled, or similarly treated prior to discharge;
8. Uncontaminated air conditioning or compressor condensate;
9. Uncontaminated groundwater or spring water;
10. Foundation or footing drains where flows are not contaminated with process
materials such as solvents;
11. Uncontaminated, excavation dewatering, including dewatering of trenches and
excavations that have been filtered, settled, or similarly treated prior to discharge; and
12. Landscape irrigations.
G. Approval for coverage under this general permit does not relieve any operator of the
responsibility to comply with any other applicable federal, state or local statute, ordinance or
regulation.
H. Continuation of general permit coverage.
1. Any operator that was authorized to discharge under the general permit issued in
2009 and that submits a complete and accurate registration statement on or before June
30, 2014, is authorized to continue to discharge under the terms of the 2009 general
permit until such time as the board either:
a. Issues coverage to the operator under this general permit or
b. Notifies the operator that the discharge is not eligible for coverage under this
general permit.
2. When the operator is not in compliance with the conditions of the expiring or expired
general permit the board may choose to do any or all of the following:
Page 4 of 29
9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
a. Initiate enforcement action based upon the 2009 general permit;
b. Issue a notice of intent to deny the new general permit. If the general permit is
denied, the owner or operator would then be required to cease the activities
authorized by the continued general permit or be subject to enforcement action for
operating without a state permit;
c. Issue a new state permit with appropriate conditions; or
d. Take other actions authorized by the VSMP Regulation (9VAC25-870).
9VAC25-880-40. Delegation of authorities to state and local programs.
A board -approved VSMP authority is authorized to administer requirements of this general
permit, including but not limited to: (i) registration statement acceptance; (ii) fee collection; (iii)
stormwater management plan review and approval; and (iv) permit compliance and enforcement
dependent upon conditions established as part of the board approval.
9VAC25-880-50. General permit application (registration statement).
A. Deadlines for submitting registration statement. Any operator seeking coverage under
this general permit, and that is required to submit a registration statement, shall submit a
complete and accurate general VPDES permit registration statement in accordance with this
section, which shall serve as a notice of intent for coverage under the general VPDES permit for
discharges of stormwater from construction activities.
1. New construction activities.
a. Any operator proposing a new stormwater discharge from construction activities
shall submit a complete and accurate registration statement to the VSMP authority
prior to the commencement of land disturbance.
b. Any operator proposing a new stormwater discharge from construction activities in
response to a public emergency where the related work requires immediate
authorization to avoid imminent endangerment to human health or the environment is
authorized to discharge under this general permit, provided that:
(1) The operator submits a complete and accurate registration statement to the
VSMP authority no later than 30 days after commencing land disturbance; and
(2) Documentation to substantiate the occurrence of the public emergency is
provided with the registration statement.
c. Any operator proposing a new stormwater discharge associated with the
construction of a single-family residence separately built, disturbing less than one
acre and part of a larger common plan of development or sale, is authorized to
discharge under this general permit and is not required to submit a registration
statement or the department portion of the permit fee, provided that the stormwater
management plan for the larger common plan of development or sale provides
permanent control measures (i.e., stormwater management facilities) encompassing
the single family residence.
2. Existing construction activities.
a. Any operator that was authorized to discharge under the general permit issued in
2009 and that intends to continue coverage under this general permit shall:
(1) Submit a complete and accurate registration statement to the VSMP authority on
or before June 1, 2014; and
Page 5 of 29
9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
(2) Update its stormwater pollution prevention plan to comply with the requirements
of this general permit no later than 60 days after the date of coverage under this
general permit.
b. Any operator with an existing stormwater discharge associated with the
construction of a single-family residence separately built, disturbing less than one
acre and part of a larger common plan of development or sale, and that intends to
continue coverage under this general permit, is authorized to discharge under this
general permit and is not required to submit a registration statement or the
department portion of the permit fee, provided that:
(1) The stormwater management plan for the larger common plan of development or
sale provides permanent control measures (i.e., stormwater management facilities)
encompassing the single-family residence; and
(2) The operator updates its stormwater pollution prevention plan to comply with the
requirements of this general permit no later than 60 days after the date of coverage
under this general permit.
3. For stormwater discharges from construction activities where the operator changes,
the new operator must submit a complete and accurate registration statement or transfer
agreement form to the VSMP authority prior to assuming operational control over site
specifications or commencing work on-site.
4. Late notifications. Operators are not prohibited from submitting registration statements
after commencing land disturbance. When a late registration statement is submitted,
authorization for discharges shall not occur until coverage under the general permit is
issued. The VSMP authority, department, board, and the EPA reserve the right to take
enforcement action for any unpermitted discharges that occur between the
commencement of land disturbance and discharge authorization.
B. Registration statement. The operator shall submit a registration statement to the VSMP
authority that shall contain the following information:
1. Name, contact, mailing address, telephone number, and email address if available of
the construction activity operator. No more than one operator may receive coverage
under each registration statement.
NOTE: General permit coverage will be issued to this operator, and the certification in
subdivision 11 of this subsection must be signed by the appropriate person associated
with this operator;
2. Name and location if available of the construction activity and all off-site support
activities to be covered under this general permit, including city or county, and latitude
and longitude in decimal degrees;
3. Status of the construction activity: federal, state, public, or private;
4. Nature of the construction activity (e.g., commercial, industrial, residential, agricultural,
oil and gas, etc.);
5. Name of the receiving water(s) and HUC ;
6. If the discharge is through a municipal separate storm sewer system (MS4), the name
of the municipal separate storm sewer system operator;
7. Estimated project start date and completion date;
8. Total land area of development and estimated area to be disturbed by the
construction activity (to the nearest one-hundredth of an acre);
9. Whether the area to be disturbed by the construction activity is part of a larger
common plan of development or sale;
Page 6 of 29
9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
10. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance
with the requirements of the General VPDES Permit for Stormwater Discharges from
Construction Activities prior to submitting the registration statement. By signing the
registration statement the operator certifies that the SWPPP has been prepared ; and
11. The following certification: "I certify under penalty of law that I have read and
understand this registration statement and that this document and all attachments were
prepared in accordance with a system designed to assure that qualified personnel
properly gathered and evaluated 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."
C. The registration statement shall be signed in accordance with 9VAC25-880-70, Part III K.
9VAC25-880-60. Termination of general permit coverage.
A. Requirements. The operator of the construction activity shall submit a notice of
termination to the VSMP authority after one or more of the following conditions have been met:
1. Necessary permanent control measures included in the SWPPP for the site are in
place and functioning effectively and final stabilization has been achieved on all portions
of the site for which the operator is responsible. When applicable, long-term
responsibility and maintenance requirements for permanent control measures shall be
recorded in the local land records prior to the submission of a notice of termination;
2. Another operator has assumed control over all areas of the site that have not been
finally stabilized and obtained coverage for the ongoing discharge;
3. Coverage under an alternative VPDES or state permit has been obtained; or
4. For residential construction only, temporary soil stabilization has been completed and
the residence has been transferred to the homeowner.
The notice of termination should be submitted no later than 30 days after one of the above
conditions being met. Authorization to discharge terminates at midnight on the date that the
notice of termination is submitted for the conditions set forth in subdivisions 2 through 4 of this
subsection unless otherwise notified by the VSMP authority or the department. Termination of
authorizations to discharge for the conditions set forth in subdivision 1 of this subsection shall
be effective upon notification from the department that the provisions of subdivision 1 of this
subsection have been met or 60 days after submittal of the notice of terminations, whichever
occurs first.
B. Notice of termination. The notice of termination shall contain the following information:
1. Name, contact, mailing address, telephone number, and email address if available of
the construction activity operator.
2. Name and location if available of the construction activity covered under this general
permit, including city or county, and latitude and longitude in decimal degrees.
3. The general permit registration number.
4. The basis for submission of the notice of termination, pursuant to subsection A of this
section.
5. Where applicable, a list of the on-site and off-site permanent control measures (both
structural and nonstructural) that were installed to comply with the stormwater
Page 7 of 29
9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
management technical criteria. For each permanent control measure that was installed,
the following information shall be included:
a. The type of permanent control measure installed and the date that it became
functional as a permanent control measure;
b. The location if available of the permanent control measure, including city or
county, and latitude and longitude in decimal degrees;
c. The receiving water of the permanent control measures; and
d. The number of total and impervious acres treated by the permanent control
measure (to the nearest one-tenth of an acre).
6. Where applicable, the following information related to participation in a regional
stormwater management plan. For each regional stormwater management facility, the
following information shall be included:
a. The type of regional facility to which the site contributes;
b. The location if available of the regional facility, including city or county, and latitude
and longitude in decimal degrees; and
c. The number of total and impervious site acres treated by the regional facility (to
the nearest one-tenth of an acre).
7. Where applicable, the following information related to perpetual nutrient credits that
were acquired in accordance with § 62.1-44.15:35 of the Code of Virginia:
a. The name of the nonpoint nutrient credit generating entity from which perpetual
nutrient credits were acquired; and
b. The number of perpetual nutrient credits acquired (lbs. per acre per year).
8. The following certification: "I certify under penalty of law that I have read and
understand this notice of termination and that this document and all attachments were
prepared in accordance with a system designed to assure that qualified personnel
properly gathered and evaluated 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."
C. The notice of termination shall be signed in accordance with 9VAC25-880-70 Part III K.
D. Termination by the board. The board may terminate coverage under this general permit
during its term and require application for an individual permit or deny a general permit renewal
application on its own initiative in accordance with the Act, this chapter, and the VSMP
Regulation, 9VAC25-870.
9VAC25-880-70. General permit.
Any operator whose registration statement is accepted by the board will receive the
following general permit and shall comply with the requirements contained therein and be
subject to all requirements of 9VAC25-870.
Page 8 of 29
9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
General Permit No.: VAR10
Effective Date: July 1, 2014
Expiration Date: June 30, 2019
GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION
ACTIVITIES
AUTHORIZATION TO DISCHARGE UNDER THE VIRGINIA STORMWATER MANAGEMENT
PROGRAM AND THE VIRGINIA STORMWATER MANAGEMENT ACT
In compliance with the provisions of the Clean Water Act, as amended, and pursuant to the
Virginia Stormwater Management Act and regulations adopted pursuant thereto, operators of
construction activities are authorized to discharge to surface waters within the boundaries of the
Commonwealth of Virginia, except those specifically named in State Water Control Board
regulations that prohibit such discharges.
The authorized discharge shall be in accordance with this cover page, Part I - Discharge
Authorization and Special Conditions, Part II - Stormwater Pollution Prevention Plan, and Part III
- Conditions Applicable to All VPDES Permits as set forth herein.
PART
DISCHARGE AUTHORIZATION AND SPECIAL CONDITIONS
A. Coverage under this general permit.
1. During the period beginning with the date of coverage under this general permit and
lasting until the general permit's expiration date, the operator is authorized to discharge
stormwater from construction activities.
2. This general permit also authorizes stormwater discharges from support activities
(e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas,
excavated material disposal areas, borrow areas) located on-site or off-site provided
that:
a. The support activity is directly related to the construction activity that is required to
have general permit coverage for discharges of stormwater from construction
activities;
b. The support activity is not a commercial operation, nor does it serve multiple
unrelated construction activities by different operators ;
c. The support activity does not operate beyond the completion of the last
construction activity it supports;
d. The support activity is identified in the registration statement at the time of general
permit coverage;
e. Appropriate control measures are identified in a stormwater pollution prevention
plan and implemented to address the discharges from the support activity areas; and
f. All applicable state, federal, and local approvals are obtained for the support
activity.
B. Limitations on coverage.
1. Post -construction discharges. This general permit does not authorize stormwater
discharges that originate from the site after construction activities have been completed
and the site, including any support activity sites covered under the general permit
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
registration, has undergone final stabilization. Post -construction industrial stormwater
discharges may need to be covered by a separate VPDES permit.
2. Discharges mixed with nonstormwater. This general permit does not authorize
discharges that are mixed with sources of nonstormwater, other than those discharges
that are identified in Part I E (Authorized nonstormwater discharges) and are in
compliance with this general permit.
3. Discharges covered by another state permit. This general permit does not authorize
discharges of stormwater from construction activities that have been covered under an
individual permit or required to obtain coverage under an alternative general permit.
4. Impaired waters and TMDL limitation. Discharges of stormwater from construction
activities to surface waters identified as impaired in the 2012 § 305(b)/303(d) Water
Quality Assessment Integrated Report or for which a TMDL wasteload allocation has
been established and approved prior to the term of this general permit for (i) sediment or
a sediment -related parameter (i.e., total suspended solids or turbidity) or (ii) nutrients
(i.e., nitrogen or phosphorus) are not eligible for coverage under this general permit
unless the operator develops, implements, and maintains a SWPPP that minimizes the
pollutants of concern and, when applicable, is consistent with the assumptions and
requirements of the approved TMDL wasteload allocations. In addition, the operator
shall implement the following items:
a. The impaired water(s), approved TMDL(s), and pollutant(s) of concern, when
applicable, shall be identified in the SWPPP;
b. Permanent or temporary soil stabilization shall be applied to denuded areas within
seven days after final grade is reached on any portion of the site;
c. Nutrients shall be applied in accordance with manufacturer's recommendations or
an approved nutrient management plan and shall not be applied during rainfall
events; and
d. The applicable SWPPP inspection requirements specified in Part II F 2 shall be
amended as follows:
(1) Inspections shall be conducted at a frequency of (i) at least once every four
business days or (ii) at least once every five business days and no later than 48
hours following a measurable storm event. In the event that a measurable storm
event occurs when there are more than 48 hours between business days, the
inspection shall be conducted on the next business day; and
(2) Representative inspections used by utility line installation, pipeline construction,
or other similar linear construction activities shall inspect all outfalls discharging to
surface waters identified as impaired or for which a TMDL wasteload allocation has
been established and approved prior to the term of this general permit.
5. Exceptional waters limitation. Discharges of stormwater from construction activities
not previously covered under the general permit issued in 2009 to exceptional waters
identified in 9VAC25-260-30 A 3 c are not eligible for coverage under this general permit
unless the operator implements the following:
a. The exceptional water(s) shall be identified in the SWPPP;
b. Permanent or temporary soil stabilization shall be applied to denuded areas within
seven days after final grade is reached on any portion of the site;
c. Nutrients shall be applied in accordance with manufacturer's recommendations or
an approved nutrient management plan and shall not be applied during rainfall
events; and
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
d. The applicable SWPPP inspection requirements specified in Part II F 2 shall be
amended as follows:
(1) Inspections shall be conducted at a frequency of (i) at least once every four
business days or (ii) at least once every five business days and no later than 48
hours following a measurable storm event. In the event that a measurable storm
event occurs when there are more than 48 hours between business days, the
inspection shall be conducted on the next business day; and
(2) Representative inspections used by utility line installation, pipeline construction,
or other similar linear construction activities shall inspect all outfalls discharging to
exceptional waters.
6. There shall be no discharge of floating solids or visible foam in other than trace
amounts.
C. Commingled discharges. Discharges authorized by this general permit may be
commingled with other sources of stormwater that are not required to be covered under a state
permit, so long as the commingled discharge is in compliance with this general permit.
Discharges authorized by a separate state or VPDES permit may be commingled with
discharges authorized by this general permit so long as all such discharges comply with all
applicable state and VPDES permit requirements.
D. Prohibition of nonstormwater discharges. Except as provided in Parts I A 2, I C and I E,
all discharges covered by this general permit shall be composed entirely of stormwater
associated with construction activities. All other discharges including the following are
prohibited:
1. Wastewater from washout of concrete;
2. Wastewater from the washout and cleanout of stucco, paint, form release of Is, curing
compounds, and other construction materials;
3. Fuels, oils, or other pollutants used in vehicle and equipment operation and
maintenance;
4. Oils, toxic substances, or hazardous substances from spills or other releases; and
5. Soaps, solvents , or detergents used in equipment and vehicle washing.
E. Authorized nonstormwater discharges. The following nonstormwater discharges from
construction activities are authorized by this general permit when discharged in compliance with
this general permit:
1. Discharges from firefighting activities;
2. Fire hydrant flushings;
3. Waters used to wash vehicles or equipment where soaps, solvents, or detergents
have not been used and the wash water has been filtered, settled, or similarly treated
prior to discharge;
4. Water used to control dust that has been filtered, settled, or similarly treated prior
to discharge;
5. Potable water sources, including uncontaminated waterline flushings;
6. Routine external building wash down where soaps, solvents or detergents have
not been used and the wash water has been filtered, settled, or similarly treated prior
to discharge;
7. Pavement wash waters where spills or leaks of toxic or hazardous materials have
not occurred (or where all spilled or leaked material has been removed prior to
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
washing); where soaps, solvents, or detergents have not been used ; and where the
wash water has been filtered, settled, or similarly treated prior to discharge;
8. Uncontaminated air conditioning or compressor condensate;
9. Uncontaminated ground water or spring water;
10. Foundation or footing drains where flows are not contaminated with process
materials such as solvents;
11. Uncontaminated excavation dewatering, including dewatering of trenches and
excavations that have been filtered, settled, or similarly treated prior to discharge;
and
12. Landscape irrigation.
F. Termination of general permit coverage.
1. The operator of the construction activity shall submit a notice of termination in
accordance with 9VAC25-880-60 to the VSMP authority after one or more of the
following conditions have been met:
a. Necessary permanent control measures included in the SWPPP for the site are in
place and functioning effectively and final stabilization has been achieved on all
portions of the site for which the operator is responsible. When applicable, long term
responsibility and maintenance requirements shall be recorded in the local land
records prior to the submission of a notice of termination;
b. Another operator has assumed control over all areas of the site that have not been
finally stabilized and obtained coverage for the ongoing discharge;
c. Coverage under an alternative VPDES or state permit has been obtained; or
d. For residential construction only, temporary soil stabilization has been completed
and the residence has been transferred to the homeowner.
2. The notice of termination should be submitted no later than 30 days after one of the
above conditions in subdivision 1 of this subsection are met. Authorization to discharge
terminates at midnight on the date that the notice of termination is submitted for the
conditions set forth in subdivisions 1 b through 1 d of this subsection. Termination of
authorizations to discharge for the conditions set forth in subdivision 1 a of this
subsection shall be effective upon notification from the department that the provisions of
subdivision 1 a of this subsection have been met or 60 days after submittal of the notice
of termination, whichever occurs first.
3. The notice of termination shall be signed in accordance with Part III K of this general
permit.
G. Water quality protection.
1. The operator must select, install, implement and maintain control measures as
identified in the SWPPP at the construction site that minimize pollutants in the discharge
as necessary to ensure that the operator's discharge does not cause or contribute to an
excursion above any applicable water quality standard.
2. If it is determined by the department that the operator's discharges are causing, have
reasonable potential to cause, or are contributing to an excursion above any applicable
water quality standard, the department, in consultation with the VSMP authority, may
take appropriate enforcement action and require the operator to:
a. Modify or implement additional control measures in accordance with Part II B to
adequately address the identified water quality concerns;
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
b. Submit valid and verifiable data and information that are representative of ambient
conditions and indicate that the receiving water is attaining water quality standards;
or
c. Submit an individual permit application in accordance with 9VAC25-870-410 B 3.
All written responses required under this chapter must include a signed certification
consistent with Part III K.
PART II
STORMWATER POLLUTION PREVENTION PLAN
A stormwater pollution prevention plan (SWPPP) shall be developed prior to the submission
of a registration statement and implemented for the construction activity, including any support
activity, covered by this general permit. SWPPPs shall be prepared in accordance with good
engineering practices. Construction activities that are part of a larger common plan of
development or sale and disturb less than one acre may utilize a SWPPP template provided by
the department and need not provide a separate stormwater management plan if one has been
prepared and implemented for the larger common plan of development or sale.
The SWPPP requirements of this general permit may be fulfilled by incorporating by
reference other plans such as a spill prevention control and countermeasure (SPCC) plan
developed for the site under § 311 of the federal Clean Water Act or best management
practices (BMP) programs otherwise required for the facility provided that the incorporated plan
meets or exceeds the SWPPP requirements of Part II A. All plans incorporated by reference into
the SWPPP become enforceable under this general permit. If a plan incorporated by reference
does not contain all of the required elements of the SWPPP, the operator must develop the
missing elements and include them in the SWPPP.
Any operator that was authorized to discharge under the general permit issued in 2009, and
that intends to continue coverage under this general permit, shall update its stormwater pollution
prevention plan to comply with the requirements of this general permit no later than 60 days
after the date of coverage under this general permit.
A. Stormwater pollution prevention plan contents. The SWPPP shall include the following
items:
1. General information.
a. A signed copy of the registration statement for coverage under the general
VPDES permit for discharges of stormwater from construction activities;
b. Upon receipt, a copy of the notice of coverage under the general VPDES permit
for discharges of stormwater from construction activities (i.e., notice of coverage
letter);
c. Upon receipt, a copy of the general VPDES permit for discharges of stormwater
from construction activities;
d. A narrative description of the nature of the construction activity, including the
function of the project (e.g., low density residential, shopping mall, highway, etc.);
e. A legible site plan identifying:
(1) Directions of stormwater flow and approximate slopes anticipated after major
grading activities;
(2) Limits of land disturbance including steep slopes and natural buffers around
surface waters that will not be disturbed;
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
(3) Locations of major structural and nonstructural control measures, including
sediment basins and traps, perimeter dikes, sediment barriers, and other measures
intended to filter, settle, or similarly treat sediment, that will be installed between
disturbed areas and the undisturbed vegetated areas in order to increase sediment
removal and maximize stormwater infiltration;
(4) Locations of surface waters;
(5) Locations where concentrated stormwater is discharged;
(6) Locations of support activities, when applicable and when required by the VSMP
authority, including but not limited to (i) areas where equipment and vehicle washing,
wheel wash water, and other wash water is to occur; (ii) storage areas for chemicals
such as acids, fuels, fertilizers, and other lawn care chemicals; (iii) concrete wash out
areas; (iv) vehicle fueling and maintenance areas; (v) sanitary waste facilities,
including those temporarily placed on the construction site; and (vi) construction
waste storage; and
(7) When applicable, the location of the on-site rain gauge or the methodology
established in consultation with the VSMP authority used to identify measurable
storm events for inspection purposes.
2. Erosion and sediment control plan.
a. An erosion and sediment control plan approved by the VESCP authority as
authorized under the Erosion and Sediment Control Regulations (9VAC25-840), an
"agreement in lieu of a plan" as defined in 9VAC25-840-10 from the VESCP
authority, or an erosion and sediment control plan prepared in accordance with
annual standards and specifications approved by the department. Any operator
proposing a new stormwater discharge from construction activities that is not
required to obtain erosion and sediment control plan approval from a VESCP
authority or does not adopt department -approved annual standards and
specifications shall submit the erosion and sediment control plan to the department
for review and approval.
b. All erosion and sediment control plans shall include a statement describing the
maintenance responsibilities required for the erosion and sediment controls used.
c. A properly implemented approved erosion and sediment control plan, "agreement
in lieu of a plan," or erosion and sediment control plan prepared in accordance with
department -approved annual standards and specifications, that adequately:
(1) Controls the volume and velocity of stormwater runoff within the site to minimize
soil erosion;
(2) Controls stormwater discharges, including peak flow rates and total stormwater
volume, to minimize erosion at outlets and to minimize downstream channel and
stream bank erosion;
(3) Minimizes the amount of soil exposed during the construction activity;
(4) Minimizes the disturbance of steep slopes;
(5) Minimizes sediment discharges from the site in a manner that addresses (i) the
amount, frequency, intensity, and duration of precipitation; (ii) the nature of resulting
stormwater runoff; and (iii) soil characteristics, including the range of soil particle
sizes present on the site;
(6) Provides and maintains natural buffers around surface waters, directs stormwater
to vegetated areas to increase sediment removal, and maximizes stormwater
infiltration, unless infeasible;
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
(7) Minimizes soil compaction and, unless infeasible, preserves topsoil;
(8) Ensures that stabilization of disturbed areas will be initiated immediately
whenever any clearing, grading, excavating, or other land -disturbing activities have
permanently ceased on any portion of the site, or temporarily ceased on any portion
of the site and will not resume for a period exceeding 14 days; and
(9) Utilizes outlet structures that withdraw stormwater from the surface (i.e., above
the permanent pool or wet storage water surface elevation), unless infeasible, when
discharging from sediment basins or sediment traps.
3. Stormwater management plan.
a. New construction activities. A stormwater management plan approved by the
VSMP authority as authorized under the Virginia Stormwater Management Program
(VSMP) Regulation (9VAC25-870), or a stormwater management plan prepared in
accordance with annual standards and specifications approved by the department.
Any operator proposing a new stormwater discharge from construction activities that
is not required to obtain stormwater management plan approval from a VSMP
authority or does not adopt department -approved annual standards and
specifications shall submit the stormwater management plan to the department for
review and approval.
b. Existing construction activities. Any operator that was authorized to discharge
under the general permit issued in 2009, and that intends to continue coverage
under this general permit, shall ensure compliance with the requirements of 9VAC25-
870-93 through 9VAC25-870-99 of the VSMP Regulation, including but not limited to
the water quality and quantity requirements. The SWPPP shall include a description
of, and all necessary calculations supporting, all post -construction stormwater
management measures that will be installed prior to the completion of the
construction process to control pollutants in stormwater discharges after construction
operations have been completed. Structural measures should be placed on upland
soils to the degree possible. Such measures must be designed and installed in
accordance with applicable VESCP authority, VSMP authority, state, and federal
requirements, and any necessary permits must be obtained.
4. Pollution prevention plan. A pollution prevention plan that addresses potential
pollutant -generating activities that may reasonably be expected to affect the quality of
stormwater discharges from the construction activity, including any support activity. The
pollution prevention plan shall:
a. Identify the potential pollutant -generating activities and the pollutant that is
expected to be exposed to stormwater;
b. Describe the location where the potential pollutant -generating activities will occur,
or if identified on the site plan, reference the site plan;
c. Identify all nonstormwater discharges, as authorized in Part I E of this general
permit, that are or will be commingled with stormwater discharges from the
construction activity, including any applicable support activity;
d. Identify the person responsible for implementing the pollution prevention practice
or practices for each pollutant -generating activity (if other than the person listed as
the qualified personnel);
e. Describe the pollution prevention practices and procedures that will be
implemented to:
(1) Prevent and respond to leaks, spills, and other releases including (i) procedures
for expeditiously stopping, containing, and cleaning up spills, leaks, and other
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
releases; and (ii) procedures for reporting leaks, spills, and other releases in
accordance with Part III G;
(2) Prevent the discharge of spilled and leaked fuels and chemicals from vehicle
fueling and maintenance activities (e.g., providing secondary containment such as
spill berms, decks, spill containment pallets, providing cover where appropriate, and
having spill kits readily available);
(3) Prevent the discharge of soaps, solvents, detergents, and wash water from
construction materials, including the clean-up of stucco, paint, form release oils, and
curing compounds (e.g., providing (i) cover (e.g., plastic sheeting or temporary roofs)
to prevent contact with stormwater; (ii) collection and proper disposal in a manner to
prevent contact with stormwater; and (iii) a similarly effective means designed to
prevent discharge of these pollutants);
(4) Minimize the discharge of pollutants from vehicle and equipment washing, wheel
wash water, and other types of washing (e.g., locating activities away from surface
waters and stormwater inlets or conveyance and directing wash waters to sediment
basins or traps, using filtration devices such as filter bags or sand filters, or using
similarly effective controls);
(5) Direct concrete 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;
(6) Minimize the discharge of pollutants from storage, handling, and disposal of
construction products, materials, and wastes including (i) building products such as
asphalt sealants, copper flashing, roofing materials, adhesives, and concrete
admixtures; (ii) pesticides, herbicides, insecticides, fertilizers, and landscape
materials; and (iii) construction and domestic wastes such as packaging materials,
scrap construction materials, masonry products, timber, pipe and electrical cuttings,
plastics, styrofoam, concrete, and other trash or building materials;
(7) Prevent the discharge of fuels, oils, and other petroleum products, hazardous or
toxic wastes, and sanitary wastes; and
(8) Address any other discharge from the potential pollutant -generating activities not
addressed above; and
f. Describe procedures for providing pollution prevention awareness of all applicable
wastes, including any wash water, disposal practices, and applicable disposal
locations of such wastes, to personnel in order to comply with the conditions of this
general permit. The operator shall implement the procedures described in the
SWPPP.
5. SWPPP requirements for discharges to impaired waters, surface waters with an
applicable TMDL wasteload allocation established and approved prior to the term of this
general permit, and exceptional waters. The SWPPP shall:
a. Identify the impaired water(s), approved TMDL(s), pollutant(s) of concern, and
exceptional waters identified in 9VAC25-260-30 A 3 c, when applicable;
b. Provide clear direction that:
(1) Permanent or temporary soil stabilization shall be applied to denuded areas
within seven days after final grade is reached on any portion of the site;
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
(2) Nutrients shall be applied in accordance with manufacturer's recommendations or
an approved nutrient management plan and shall not be applied during rainfall
events; and
(3) A modified inspection schedule shall be implemented in accordance with Part I B
4orPart IB5.
6. Qualified personnel. The name, phone number, and qualifications of the qualified
personnel conducting inspections required by this general permit.
7. Delegation of authority. The individuals or positions with delegated authority, in
accordance with Part III K, to sign inspection reports or modify the SWPPP.
8. SWPPP signature. The SWPPP shall be signed and dated in accordance with Part III
K.
B. SWPPP amendments, modification, and updates.
1. The operator shall amend the SWPPP whenever there is a change in the design,
construction, operation, or maintenance that has a significant effect on the discharge of
pollutants to surface waters and that has not been previously addressed in the SWPPP.
2. The SWPPP must be amended if, during inspections or investigations by the
operator's qualified personnel, or by local, state, or federal officials, it is determined that
the existing control measures are ineffective in minimizing pollutants in discharges from
the construction activity. Revisions to the SWPPP shall include additional or modified
control measures designed and implemented to correct problems identified. If approval
by the VESCP authority, VSMP authority, or department is necessary for the control
measure, revisions to the SWPPP shall be completed no later than seven calendar days
following approval. Implementation of these additional or modified control measures
must be accomplished as described in Part II G.
3. The SWPPP must clearly identify the contractor(s) that will implement and maintain
each control measure identified in the SWPPP. The SWPPP shall be amended to
identify any new contractor that will implement and maintain a control measure.
4. The operator shall update the SWPPP no later than seven days following any
modification to its implementation. All modifications or updates to the SWPPP shall be
noted and shall include the following items:
a. A record of dates when:
(1) Major grading activities occur;
(2) Construction activities temporarily or permanently cease on a portion of the site;
and
(3) Stabilization measures are initiated;
b. Documentation of replaced or modified controls where periodic inspections or
other information have indicated that the controls have been used inappropriately or
incorrectly and where modified as soon as possible;
c. Areas that have reached final stabilization and where no further SWPPP or
inspection requirements apply;
d. All properties that are no longer under the legal control of the operator and the
dates on which the operator no longer had legal control over each property;
e. The date of any prohibited discharges, the discharge volume released, and what
actions were taken to minimize the impact of the release;
f. Measures taken to prevent the reoccurrence of any prohibited discharge; and
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
g. Measures taken to address any evidence identified as a result of an inspection
required under Part II F.
5. Amendments, modifications, or updates to the SWPPP shall be signed in accordance
with Part III K.
C. Public Notification. Upon commencement of land disturbance, the operator shall post
conspicuously a copy of the notice of coverage letter near the main entrance of the construction
activity. For linear projects, the operator shall post the notice of coverage letter at a publicly
accessible location near an active part of the construction project (e.g., where a pipeline crosses
a public road). The operator shall maintain the posted information until termination of general
permit coverage as specified in Part I F.
D. SWPPP availability.
1. Operators with day-to-day operational control over SWPPP implementation shall have
a copy of the SWPPP available at a central location on-site for use by those identified as
having responsibilities under the SWPPP whenever they are on the construction site.
2. The operator shall make the SWPPP and all amendments, modifications, and updates
available upon request to the department, the VSMP authority, the EPA, the VESCP
authority, local government officials, or the operator of a municipal separate storm sewer
system receiving discharges from the construction activity. If an on-site location is
unavailable to store the SWPPP when no personnel are present, notice of the SWPPP's
location must be posted near the main entrance of the construction site.
3. The operator shall make the SWPPP available for public review in an electronic
format or in hard copy. Information for public access to the SWPPP shall be posted and
maintained in accordance with Part II C. If not provided electronically, public access to
the SWPPP may be arranged upon request at a time and at a publicly accessible
location convenient to the operator or his designee but shall be no less than once per
month and shall be during normal business hours. Information not required to be
contained within the SWPPP by this general permit is not required to be released.
E. SWPPP implementation. The operator shall implement the SWPPP and subsequent
amendments, modifications, and updates from commencement of land disturbance until
termination of general permit coverage as specified in Part I F.
1. All control measures must be properly maintained in effective operating condition in
accordance with good engineering practices and, where applicable, manufacturer
specifications. If a site inspection required by Part II F identifies a control measure that is
not operating effectively, corrective action(s) shall be completed as soon as practicable,
but no later than seven days after discovery or a longer period as established by the
VSMP authority, to maintain the continued effectiveness of the control measures.
2. If site inspections required by Part II F identify an existing control measure that needs
to be modified or if an additional control measure is necessary for any reason,
implementation shall be completed prior to the next anticipated measurable storm event.
If implementation prior to the next anticipated measurable storm event is impracticable,
then alternative control measures shall be implemented as soon as practicable, but no
later than seven days after discovery or a longer period as established by the VSMP
authority.
F. SWPPP Inspections.
1. Personnel responsible for on-site and off-site inspections. Inspections required by this
general permit shall be conducted by the qualified personnel identified by the operator in
the SWPPP. The operator is responsible for insuring that the qualified personnel conduct
the inspection.
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
2. Inspection schedule.
a. Inspections shall be conducted at a frequency of:
(1) At least once every five business days; or
(2) At least once every 10 business days and no later than 48 hours following a
measurable storm event. In the event that a measurable storm event occurs when
there are more than 48 hours between business days, the inspection shall be
conducted no later than the next business day.
b. Where areas have been temporarily stabilized or land -disturbing activities will be
suspended due to continuous frozen ground conditions and stormwater discharges
are unlikely, the inspection frequency may be reduced to once per month. If weather
conditions (such as above freezing temperatures or rain or snow events) make
discharges likely, the operator shall immediately resume the regular inspection
frequency.
c. Representative inspections may be utilized for utility line installation, pipeline
construction, or other similar linear construction activities provided that:
(1) Temporary or permanent soil stabilization has been installed and vehicle access
may compromise the temporary or permanent soil stabilization and potentially cause
additional land disturbance increasing the potential for erosion;
(2) Inspections occur on the same frequency as other construction activities;
(3) Control measures are inspected along the construction site 0.25 miles above and
below each access point (i.e., where a roadway, undisturbed right-of-way, or other
similar feature intersects the construction activity and access does not compromise
temporary or permanent soil stabilization); and
(4) Inspection locations are provided in the report required by Part II F.
3. Inspection requirements.
a. As part of the inspection, the qualified personnel shall:
(1) Record the date and time of the inspection and when applicable the date and
rainfall amount of the last measurable storm event;
(2) Record the information and a description of any discharges occurring at the time
of the inspection;
(3) Record any land -disturbing activities that have occurred outside of the approved
erosion and sediment control plan;
(4) Inspect the following for installation in accordance with the approved erosion and
sediment control plan, identification of any maintenance needs, and evaluation of
effectiveness in minimizing sediment discharge, including whether the control has
been inappropriately or incorrectly used:
(a) All perimeter erosion and sediment controls, such as silt fence;
(b) Soil stockpiles, when applicable, and borrow areas for stabilization or sediment
trapping measures;
(c) Completed earthen structures, such as dams, dikes, ditches, and diversions for
stabilization;
(d) Cut and fill slopes;
(e) Sediment basins and traps, sediment barriers, and other measures installed to
control sediment discharge from stormwater;
(f) Temporary or permanent channel, flume, or other slope drain structures installed
to convey concentrated runoff down cut and fill slopes;
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
(g) Storm inlets that have been made operational to ensure that sediment laden
stormwater does not enter without first being filtered or similarly treated; and
(h) Construction vehicle access routes that intersect or access paved roads for
minimizing sediment tracking;
(5) Inspect areas that have reached final grade or that will remain dormant for more
than 14 days for initiation of stabilization activities;
(6) Inspect areas that have reached final grade or that will remain dormant for more
than 14 days for completion of stabilization activities within seven days of reaching
grade or stopping work;
(7) Inspect for evidence that the approved erosion and sediment control plan,
"agreement in lieu of a plan," or erosion and sediment control plan prepared in
accordance with department -approved annual standards and specifications has not
been properly implemented. This includes but is not limited to:
(a) Concentrated flows of stormwater in conveyances such as rills, rivulets or
channels that have not been filtered, settled, or similarly treated prior to discharge ,
or evidence thereof;
(b) Sediment laden or turbid flows of stormwater that have not been filtered or settled
to remove sediments prior to discharge;
(c) Sediment deposition in areas that drain to unprotected stormwater inlets or catch
basins that discharge to surface waters. Inlets and catch basins with failing
sediments controls due to improper installation, lack of maintenance, or inadequate
design are considered unprotected;
(d) Sediment deposition on any property (including public and private streets) outside
of the construction activity covered by this general permit;
(e) Required stabilization has not been initiated or completed on portions of the site;
(f) Sediment basins without adequate wet or dry storage volume or sediment basins
that allow the discharge of stormwater from below the surface of the wet storage
portion of the basin;
(g) Sediment traps without adequate wet or dry storage or sediment traps that allow
the discharge of stormwater from below the surface of the wet storage portion of the
trap; and
(h) Land disturbance outside of the approved area to be disturbed;
(8) Inspect pollutant generating activities identified in the pollution prevention plan for
the proper implementation, maintenance and effectiveness of the procedures and
practices;
(9) Identify any pollutant generating activities not identified in the pollution prevention
plan; and
(10) Identify and document the presence of any evidence of the discharge of
pollutants prohibited by this general permit.
4. Inspection report. Each inspection report shall include the following items:
a. The date and time of the inspection and when applicable, the date and rainfall
amount of the last measurable storm event;
b. Summarized findings of the inspection;
c. The location(s) of prohibited discharges;
d. The location(s) of control measures that require maintenance;
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
e. The location(s) of control measures that failed to operate as designed or proved
inadequate or inappropriate for a particular location;
f. The location(s) where any evidence identified under Part II F 3 a (7) exists;
g. The location(s) where any additional control measure is needed that did not exist
at the time of inspection;
h. A list of corrective actions required (including any changes to the SWPPP that are
necessary ) as a result of the inspection or to maintain permit compliance;
i. Documentation of any corrective actions required from a previous inspection that
have not been implemented; and
j. The date and signature of the qualified personnel and the operator or its duly
authorized representative.
The inspection report and any actions taken in accordance with Part II must be retained
by the operator as part of the SWPPP for at least three years from the date that general
permit coverage expires or is terminated. The inspection report shall identify any
incidents of noncompliance. Where an inspection report does not identify any incidents
of noncompliance, the report shall contain a certification that the construction activity is
in compliance with the SWPPP and this general permit. The report shall be signed in
accordance with Part III K of this general permit.
G. Corrective actions.
1. The operator shall implement the corrective action(s) identified as a result of an
inspection as soon as practicable but no later than seven days after discovery or a
longer period as approved by the VSMP authority. If approval of a corrective action by a
regulatory authority (e.g., VSMP authority, VESCP authority, or the department) is
necessary, additional control measures shall be implemented to minimize pollutants in
stormwater discharges until such approvals can be obtained.
2. The operator may be required to remove accumulated sediment deposits located
outside of the construction activity covered by this general permit as soon as practicable
in order to minimize environmental impacts. The operator shall notify the VSMP authority
and the department as well as obtain all applicable federal, state, and local
authorizations, approvals, and permits prior to the removal of sediments accumulated in
surface waters including wetlands.
PART III
CONDITIONS APPLICABLE TO ALL VPDES PERMITS
NOTE: Discharge monitoring is not required for this general permit. If the operator chooses
to monitor stormwater discharges or control measures, the operator must comply with the
requirements of subsections A, B, and C, as appropriate.
A. Monitoring.
1. Samples and measurements taken for the purpose of monitoring shall be
representative of the monitoring activity.
2. Monitoring shall be conducted according to procedures approved under 40 CFR Part
136 or alternative methods approved by the U.S. Environmental Protection Agency,
unless other procedures have been specified in this general permit. Analyses performed
according to test procedures approved under 40 CFR Part 136 shall be performed by an
environmental laboratory certified under regulations adopted by the Department of
General Services (1 VAC30-45 or 1 VAC30-46).
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
3. The operator shall periodically calibrate and perform maintenance procedures on all
monitoring and analytical instrumentation at intervals that will ensure accuracy of
measurements.
B. Records.
1. Monitoring records and reports shall include:
a. The date, exact place, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The date(s) and time(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
2. The operator shall retain records of all monitoring information, including all calibration
and maintenance records and all original strip chart recordings for continuous monitoring
instrumentation, copies of all reports required by this general permit, and records of all
data used to complete the registration statement for this general permit, for a period of at
least three years from the date of the sample, measurement, report or request for
coverage. This period of retention shall be extended automatically during the course of
any unresolved litigation regarding the regulated activity or regarding control standards
applicable to the operator, or as requested by the board.
C. Reporting monitoring results.
1. The operator shall update the SWPPP to include the results of the monitoring as may
be performed in accordance with this general permit, unless another reporting schedule
is specified elsewhere in this general permit.
2. Monitoring results shall be reported on a discharge monitoring report (DMR); on forms
provided, approved or specified by the department; or in any format provided that the
date, location, parameter, method, and result of the monitoring activity are included.
3. If the operator monitors any pollutant specifically addressed by this general permit
more frequently than required by this general permit using test procedures approved
under 40 CFR Part 136 or using other test procedures approved by the U.S.
Environmental Protection Agency or using procedures specified in this general permit,
the results of this monitoring shall be included in the calculation and reporting of the data
submitted in the DMR or reporting form specified by the department.
4. Calculations for all limitations which require averaging of measurements shall utilize
an arithmetic mean unless otherwise specified in this general permit.
D. Duty to provide information. The operator shall furnish, within a reasonable time, any
information which the board may request to determine whether cause exists for modifying,
revoking and reissuing, or terminating this general permit or to determine compliance with this
general permit. The board, department, EPA, or VSMP authority may require the operator to
furnish, upon request, such plans, specifications, and other pertinent information as may be
necessary to determine the effect of the wastes from his discharge on the quality of surface
waters, or such other information as may be necessary to accomplish the purposes of the CWA
and the Virginia Stormwater Management Act. The operator shall also furnish to the board,
department, EPA, or VSMP authority, upon request, copies of records required to be kept by
this general permit.
E. Compliance schedule reports. Reports of compliance or noncompliance with, or any
progress reports on, interim and final requirements contained in any compliance schedule of this
general permit shall be submitted no later than 14 days following each schedule date.
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
F. Unauthorized stormwater discharges. Pursuant to § 62.1-44.5 of the Code of Virginia,
except in compliance with a state permit issued by the department, it shall be unlawful to cause
a stormwater discharge from a construction activity.
G. Reports of unauthorized discharges. Any operator who discharges or causes or allows a
discharge of sewage, industrial waste, other wastes or any noxious or deleterious substance or
a hazardous substance or oil in an amount equal to or in excess of a reportable quantity
established under either 40 CFR Part 110, 40 CFR Part 117, 40 CFR Part 302, or § 62.1-
44.34:19 of the Code of Virginia that occurs during a 24-hour period into or upon surface waters
or who discharges or causes or allows a discharge that may reasonably be expected to enter
surface waters, shall notify the Department of Environmental Quality of the discharge
immediately upon discovery of the discharge, but in no case later than within 24 hours after said
discovery. A written report of the unauthorized discharge shall be submitted to the department
and the VSMP authority within five days of discovery of the discharge. The written report shall
contain:
1. A description of the nature and location of the discharge;
2. The cause of the discharge;
3. The date on which the discharge occurred;
4. The length of time that the discharge continued;
5. The volume of the discharge;
6. If the discharge is continuing, how long it is expected to continue;
7. If the discharge is continuing, what the expected total volume of the discharge will be;
and
8. Any steps planned or taken to reduce, eliminate and prevent a recurrence of the
present discharge or any future discharges not authorized by this general permit.
Discharges reportable to the department and the VSMP authority under the immediate
reporting requirements of other regulations are exempted from this requirement.
H. Reports of unusual or extraordinary discharges. If any unusual or extraordinary discharge
including a "bypass" or "upset", as defined herein, should occur from a facility and the discharge
enters or could be expected to enter surface waters, the operator shall promptly notify, in no
case later than within 24 hours, the department and the VSMP authority by telephone after the
discovery of the discharge. This notification shall provide all available details of the incident,
including any adverse effects on aquatic life and the known number of fish killed. The operator
shall reduce the report to writing and shall submit it to the department and the VSMP authority
within five days of discovery of the discharge in accordance with Part III 12. Unusual and
extraordinary discharges include but are not limited to any discharge resulting from:
1. Unusual spillage of materials resulting directly or indirectly from processing
operations;
2. Breakdown of processing or accessory equipment;
3. Failure or taking out of service of some or all of the facilities; and
4. Flooding or other acts of nature.
I. Reports of noncompliance. The operator shall report any noncompliance which may
adversely affect surface waters or may endanger public health.
1. An oral report to the department and the VSMP authority shall be provided within 24
hours from the time the operator becomes aware of the circumstances. The following
shall be included as information that shall be reported within 24 hours under this
subdivision:
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
a. Any unanticipated bypass; and
b. Any upset that causes a discharge to surface waters.
2. A written report shall be submitted within five days and shall contain:
a. A description of the noncompliance and its cause;
b. The period of noncompliance, including exact dates and times, and if the
noncompliance has not been corrected, the anticipated time it is expected to
continue; and
c. Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the
noncompliance.
The department may waive the written report on a case-by-case basis for reports of
noncompliance under Part III I if the oral report has been received within 24 hours and
no adverse impact on surface waters has been reported.
3. The operator shall report all instances of noncompliance not reported under Part III 1 1
or 2 in writing as part of the SWPPP. The reports shall contain the information listed in
Part 111 12.
NOTE: The reports required in Part III G, H and I shall be made to the department and
the VSMP authority. Reports may be made by telephone, email, or by fax. For reports
outside normal working hours, leaving a recorded message shall fulfill the immediate
reporting requirement. For emergencies, the Virginia Department of Emergency
Management maintains a 24-hour telephone service at 1-800-468-8892.
4. Where the operator becomes aware of a failure to submit any relevant facts, or
submittal of incorrect information in any report, including a registration statement, to the
department or the VSMP authority, the operator shall promptly submit such facts or
correct information.
J. Notice of planned changes.
1. The operator shall give notice to the department and the VSMP authority as soon as
possible of any planned physical alterations or additions to the permitted facility or
activity. Notice is required only when:
a. The operator plans an alteration or addition to any building, structure, facility, or
installation that may meet one of the criteria for determining whether a facility is a
new source in 9VAC25-870-420;
b. The operator plans an alteration or addition that would significantly change the
nature or increase the quantity of pollutants discharged. This notification applies to
pollutants that are not subject to effluent limitations in this general permit; or
2. The operator shall give advance notice to the department and VSMP authority of any
planned changes in the permitted facility or activity, which may result in noncompliance
with state permit requirements.
K. Signatory requirements.
1. Registration statement. All registration statements shall be signed as follows:
a. For a corporation: by a responsible corporate officer. For the purpose of this
chapter, a responsible corporate officer means: (i) a president, secretary, treasurer,
or vice-president of the corporation in charge of a principal business function, or any
other person who performs similar policy-making or decision-making functions for the
corporation; or (ii) the manager of one or more manufacturing, production, or
operating facilities, provided the manager is authorized to make management
decisions that govern the operation of the regulated facility including having the
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
explicit or implicit duty of making major capital investment recommendations, and
initiating and directing other comprehensive measures to assure long-term
compliance with environmental laws and regulations; the manager can ensure that
the necessary systems are established or actions taken to gather complete and
accurate information for state permit application requirements; and where authority to
sign documents has been assigned or delegated to the manager in accordance with
corporate procedures;
b. For a partnership or sole proprietorship: by a general partner or the proprietor,
respectively; or
c. For a municipality, state, federal, or other public agency: by either a principal
executive officer or ranking elected official. For purposes of this chapter, a principal
executive officer of a public agency includes: (i) the chief executive officer of the
agency or (ii) a senior executive officer having responsibility for the overall
operations of a principal geographic unit of the agency.
2. Reports, etc. All reports required by this general permit, including SWPPPs, and other
information requested by the board or the department shall be signed by a person
described in Part III K 1 or by a duly authorized representative of that person. A person
is a duly authorized representative only if:
a. The authorization is made in writing by a person described in Part III K 1;
b. The authorization specifies either an individual or a position having responsibility
for the overall operation of the regulated facility or activity such as the position of
plant manager, operator of a well or a well field, superintendent, position of
equivalent responsibility, or an individual or position having overall responsibility for
environmental matters for the operator. (A duly authorized representative may thus
be either a named individual or any individual occupying a named position); and
c. The signed and dated written authorization is included in the SWPPP. A copy must
be provided to the department and VSMP authority, if requested.
3. Changes to authorization. If an authorization under Part III K 2 is no longer accurate
because a different individual or position has responsibility for the overall operation of
the construction activity, a new authorization satisfying the requirements of Part III K 2
shall be submitted to the VSMP authority as the administering entity for the board prior
to or together with any reports or information to be signed by an authorized
representative.
4. Certification. Any person signing a document under Part III K 1 or 2 shall make the
following certification:
"I certify under penalty of law that I have read and understand this document and that
this document and all attachments were prepared in accordance with a system designed
to assure that qualified personnel properly gathered and evaluated 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."
L. Duty to comply. The operator shall comply with all conditions of this general permit. Any
state permit noncompliance constitutes a violation of the Virginia Stormwater Management Act
and the Clean Water Act, except that noncompliance with certain provisions of this general
permit may constitute a violation of the Virginia Stormwater Management Act but not the Clean
Water Act. Permit noncompliance is grounds for enforcement action; for state permit
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
termination, revocation and reissuance, or modification; or denial of a state permit renewal
application.
The operator shall comply with effluent standards or prohibitions established under § 307(a)
of the Clean Water Act for toxic pollutants within the time provided in the regulations that
establish these standards or prohibitions or standards for sewage sludge use or disposal, even
if this general permit has not yet been modified to incorporate the requirement.
M. Duty to reapply. If the operator wishes to continue an activity regulated by this general
permit after the expiration date of this general permit, the operator shall submit a new
registration statement at least 90 days before the expiration date of the existing general permit,
unless permission for a later date has been granted by the board. The board shall not grant
permission for registration statements to be submitted later than the expiration date of the
existing general permit.
N. Effect of a state permit. This general permit does not convey any property rights in either
real or personal property or any exclusive privileges, nor does it authorize any injury to private
property or invasion of personal rights, or any infringement of federal, state or local law or
regulations.
O. State law. Nothing in this general permit shall be construed to preclude the institution of
any legal action under, or relieve the operator from any responsibilities, liabilities, or penalties
established pursuant to any other state law or regulation or under authority preserved by § 510
of the Clean Water Act. Except as provided in general permit conditions on "bypassing" (Part III
U) and "upset" (Part III V), nothing in this general permit shall be construed to relieve the
operator from civil and criminal penalties for noncompliance.
P. Oil and hazardous substance liability. Nothing in this general permit shall be construed to
preclude the institution of any legal action or relieve the operator from any responsibilities,
liabilities, or penalties to which the operator is or may be subject under §§ 62.1-44.34:14
through 62.1-44.34:23 of the State Water Control Law or § 311 of the Clean Water Act.
Q. Proper operation and maintenance. The operator shall at all times properly operate and
maintain all facilities and systems of treatment and control (and related appurtenances), which
are installed or used by the operator to achieve compliance with the conditions of this general
permit. Proper operation and maintenance also includes effective plant performance, adequate
funding, adequate staffing, and adequate laboratory and process controls, including appropriate
quality assurance procedures. This provision requires the operation of back-up or auxiliary
facilities or similar systems, which are installed by the operator only when the operation is
necessary to achieve compliance with the conditions of this general permit.
R. Disposal of solids or sludges. Solids, sludges or other pollutants removed in the course of
treatment or management of pollutants shall be disposed of in a manner so as to prevent any
pollutant from such materials from entering surface waters and in compliance with all applicable
state and federal laws and regulations.
S. Duty to mitigate. The operator shall take all steps to minimize or prevent any discharge in
violation of this general permit that has a reasonable likelihood of adversely affecting human
health or the environment.
T. Need to halt or reduce activity not a defense. It shall not be a defense for an operator in
an enforcement action that it would have been necessary to halt or reduce the permitted activity
in order to maintain compliance with the conditions of this general permit.
U. Bypass.
1. "Bypass," as defined in 9VAC25-870-10, means the intentional diversion of waste
streams from any portion of a treatment facility. The operator may allow any bypass to
occur that does not cause effluent limitations to be exceeded, but only if it also is for
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
essential maintenance to ensure efficient operation. These bypasses are not subject to
the provisions of Part III U 2 and 3.
2. Notice.
a. Anticipated bypass. If the operator knows in advance of the need for a bypass, the
operator shall submit prior notice to the department, if possible at least 10 days
before the date of the bypass.
b. Unanticipated bypass. The operator shall submit notice of an unanticipated bypass
as required in Part III I.
3. Prohibition of bypass.
a. Except as provided in Part III U 1, bypass is prohibited, and the board or
department may take enforcement action against an operator for bypass unless:
(1) Bypass was unavoidable to prevent loss of life, personal injury, or severe
property damage. Severe property damage means substantial physical damage to
property, damage to the treatment facilities that causes them to become inoperable,
or substantial and permanent loss of natural resources that can reasonably be
expected to occur in the absence of a bypass. Severe property damage does not
mean economic loss caused by delays in production;
(2) There were no feasible alternatives to the bypass, such as the use of auxiliary
treatment facilities, retention of untreated wastes, or maintenance during normal
periods of equipment downtime. This condition is not satisfied if adequate back-up
equipment should have been installed in the exercise of reasonable engineering
judgment to prevent a bypass that occurred during normal periods of equipment
downtime or preventive maintenance; and
(3) The operator submitted notices as required under Part III U 2.
b. The department may approve an anticipated bypass, after considering its adverse
effects, if the department determines that it will meet the three conditions listed in
Part III U3a.
V. Upset.
1. An "upset," as defined in 9VAC25-870-10, means an exceptional incident in which
there is unintentional and temporary noncompliance with technology-based state permit
effluent limitations because of factors beyond the reasonable control of the operator. An
upset does not include noncompliance to the extent caused by operational error,
improperly designed treatment facilities, inadequate treatment facilities, lack of
preventive maintenance, or careless or improper operation.
2. An upset constitutes an affirmative defense to an action brought for noncompliance
with technology-based state permit effluent limitations if the requirements of Part III V 4
are met. A determination made during administrative review of claims that
noncompliance was caused by upset, and before an action for noncompliance, is not a
final administrative action subject to judicial review.
3. An upset does not include noncompliance to the extent caused by operational error,
improperly designed treatment facilities, inadequate treatment facilities, lack of
preventative maintenance, or careless or improper operation.
4. An operator who wishes to establish the affirmative defense of upset shall
demonstrate, through properly signed, contemporaneous operating logs or other
relevant evidence that:
a. An upset occurred and that the operator can identify the cause(s) of the upset;
b. The permitted facility was at the time being properly operated;
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
c. The operator submitted notice of the upset as required in Part III I; and
d. The operator complied with any remedial measures required under Part III S.
5. In any enforcement proceeding, the operator seeking to establish the occurrence of
an upset has the burden of proof.
W. Inspection and entry. The operator shall allow the department as the board's designee,
the VSMP authority, EPA, or an authorized representative of either entity (including an
authorized contractor), upon presentation of credentials and other documents as may be
required by law to:
1. Enter upon the operator's premises where a regulated facility or activity is located or
conducted, or where records must be kept under the conditions of this general permit;
2. Have access to and copy, at reasonable times, any records that must be kept under
the conditions of this general permit;
3. Inspect and photograph at reasonable times any facilities, equipment (including
monitoring and control equipment), practices, or operations regulated or required under
this general permit; and
4. Sample or monitor at reasonable times, for the purposes of ensuring state permit
compliance or as otherwise authorized by the Clean Water Act or the Virginia
Stormwater Management Act, any substances or parameters at any location.
For purposes of this section, the time for inspection shall be deemed reasonable during
regular business hours, and whenever the facility is discharging. Nothing contained herein shall
make an inspection unreasonable during an emergency.
X. State permit actions. State permits may be modified, revoked and reissued, or terminated
for cause. The filing of a request by the operator for a state permit modification, revocation and
reissuance, or termination, or a notification of planned changes or anticipated noncompliance
does not stay any state permit condition.
Y. Transfer of state permits.
1. State permits are not transferable to any person except after notice to the department.
Except as provided in Part III Y 2, a state permit may be transferred by the operator to a
new operator only if the state permit has been modified or revoked and reissued, or a
minor modification made, to identify the new operator and incorporate such other
requirements as may be necessary under the Virginia Stormwater Management Act and
the Clean Water Act.
2. As an alternative to transfers under Part III Y 1, this state permit may be automatically
transferred to a new operator if:
a. The current operator notifies the department at least 30 days in advance of the
proposed transfer of the title to the facility or property;
b. The notice includes a written agreement between the existing and new operators
containing a specific date for transfer of state permit responsibility, coverage, and
liability between them; and
c. The department does not notify the existing operator and the proposed new
operator of its intent to modify or revoke and reissue the state permit. If this notice is
not received, the transfer is effective on the date specified in the agreement
mentioned in Part III Y 2 b.
3. For ongoing construction activity involving a change of operator, the new operator
shall accept and maintain the existing SWPPP, or prepare and implement a new
SWPPP prior to taking over operations at the site.
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
Z. Severability. The provisions of this general permit are severable, and if any provision of
this general permit or the application of any provision of this state permit to any circumstance, is
held invalid, the application of such provision to other circumstances and the remainder of this
general permit shall not be affected thereby.
9VAC25-880-80. (Repealed.)
9VAC25-880-82. (Repealed.)
9VAC25-880-84. (Repealed.)
9VAC25-880-86. (Repealed.)
9VAC25-880-88. (Repealed.)
9VAC25-880-90. (Repealed.)
9VAC25-880-100. Delegation of authority.
The director, or his designee, may perform any act of the board provided under this chapter,
except as limited by § 62.1-44.14 of the Code of Virginia.
FORMS (9VAC25-880)
Department of Environmental Quality Construction Activity Operator Permit Fee Form (rev.
01/2014)
Notice of Termination - General VPDES Permit for Discharges of Stormwater from
Construction Activities (VAR10) (rev. 01/2014)
Registration Statement - General VPDES Permit for Discharges of Stormwater from
Construction Activities (VAR10) (rev. 01/2014)
Transfer Agreement - General VPDES Permit for Discharges of Stormwater from
Construction Activities (VAR10) (rev. 01/2014)
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9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014)
Section 12. Inspection logs
(Provide templates for your inspections. Requirements are listed in 9VAC25-880-70, Part II, section B and F.)
Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County