HomeMy WebLinkAboutWPO201300029 Plan - Stormwater 2016-02-04 STORMWATER POLLUTION PROTECTION PLAN
1'' ECI-IT PLACE
CHARLOTTESVILLE, VIRGINIA
18 JUNE 2014
Prepared by:
TERRA CONCEPTS, PC
2046 Rock Quarry Road
Louisa, Virginia 23093
(434) 531-3600
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TA LSE OF CONTENTS
I. GENERAL PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION
ACTIVITIES
1. Section 1: Discharge Authorization and Special Conditions
2. Section 2: Stormwater Pollution Prevention Plan (Requirements)
3. Section 3: Conditions Applicable to All VSMP Permits
II. PROJECT CHECKLIST
III. DCR/VSMP PERMIT FORMS
• DCR Permit Fee Form (DCR 199-145)
• VSMP General Permit for Discharges of Stormwater from Construction Activities (VAR10)
Registration Statement (DCR 199-146)
• VSMP General Permit Notice of Termination — Construction Activity Stormwater Discharges
(VAR10) (DCR 199-147)
• Supplemental Information
• Vicinity Map
IV. ADDENDA
1. Areas of Final Stabilization
2. Major Grading Activities
3. Scope of Inspection
4. Erosion and Sediment Control Narrative
5. Stormwater Management Calculations
6. Erosion & Sediment Control Plan Set
7. PPP
SECTION II OF GENERAL PERMIT NO. DCRO1
STORMWATER POLLUTION PREVENTION PLAN
A stormwater pollution prevention plan(SWPPP) shall be developed and implemented for the construction
activity covered by this permit. SWPPPs shall be prepared in accordance with good engineering practices. The
SWPPP shall identify potential sources of pollution which may reasonably be expected to affect the quality of
stormwater discharges from the construction site. In addition, the SWPPP shall describe and ensure the
implementation of practices which will be used to reduce pollutants in stormwater discharges from the
construction site, and to assure compliance with the terms and conditions of this permit.
The SWPPP requirements of this general permit may be fulfilled by incorporating by reference other state,
tribal or local plans such as an erosion and sediment control (ESC)plan, 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 Section II D. If an erosion and sediment control plan for the
construction activity is being incorporated by reference,the referenced plan must be approved by the locality in
which the construction activity is to occur or by another appropriate plan approving authority authorized under
the Erosion and Sediment Control Regulations (4 VAC 50-30)prior to the commencement of construction. All
plans incorporated by reference into the SWPPP become enforceable under this permit. If a plan incorporated
+ ,,,by reference does not contain all of the required elements of the
SWPPP of Section II D, the permittee must develop the missing elements and include them in the required
SWPPP.
Once a definable area has been finally stabilized,the operator may mark this on the
SWPPP and no further SWPPP or inspection requirements apply to that portion of the site
(e.g., earth disturbing activities around one of three buildings in a complex are done and the area is finally
stabilized; one mile of a roadway or pipeline project is done and finally stabilized, etc.).
Pursuant to the requirements set forth in General Permit No. DCR01 under Section III K.4 "I certify
fir, 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
impris•nm nt f. knowing violations."
Signature Date
GENERA L ]PERMIT FOR t ISCHARGES OF
STORMWATER FROM CONSTRUCTION ACTIVITIES
General Permit No.: VAR10
'vire Effective Date: July 1, 2009
Expiration Date: June 30,2014
GENERAL 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 attendant regulations, operators of construction activities covered by this
permit with stormwater discharges are authorized to discharge to state waters, including discharges to a
regulated MS4 system, within the boundaries of the Commonwealth of Virginia, except those specifically
named in State Water Control Board and Virginia Soil and Water Conservation Board regulations that prohibit
such discharges.
The authorized discharge shall be in accordance with this cover page, Section I—Discharge Authorization
and Special Conditions, Section II—Stormwater Pollution Prevention Plan, and Section III—Conditions
Applicable To All VSMP Permits as set forth herein.
SECTION I-DISCHARGE AUTHORIZATION AND SPECIAL CONDITIONS
A. Coverage under this permit.
1. During the period beginning with the date of coverage under this general permit and lasting until the
'r✓ permit's expiration date, the operator is authorized to discharge stormwater from construction activities.
2. This permit may also authorize 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 site that is required to have VSMP
permit coverage for discharges of stormwater associated with construction activity;
b. The support activity is not a commercial operation serving multiple unrelated construction
projects by different operators, and does not operate beyond the completion of the construction
activity at the last construction project it supports; and
c. Appropriate control measures are identified in a stormwater pollution prevention plan and
implemented to address the discharges from the support activity areas.
3. There shall be no discharge of floating solids or visible foam that contravenes established standards or
interferes directly or indirectly with designated uses of surface waters.
B. Limitation on coverage.
1. Post-construction discharges. This permit does not authorize stormwater discharges that originate
from the site after construction activities have been completed and the site, including any temporary
support activity site, 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 permit does not authorize discharges that are mixed with
.., sources of nonstormwater, other than those discharges that are identified in Section I D 2 (Exceptions to
prohibition of nonstormwater discharges) and are in compliance with Section II D 5 (Nonstormwater
discharge management).
3. Discharges covered by another permit. This permit does not authorize stormwater discharges
associated with construction activity that have been covered under an individual permit or required to
obtain coverage under an alternative general permit.
4. TMDL limitation. Discharges to waters for which a wasteload allocation (WLA) for a pollutant has
been established in a "total maximum daily load" (TMDL) approved by the State Water Control Board
that would apply to stormwater discharges from a construction activity are not eligible for coverage
under this permit unless the stormwater pollution prevention plan (SWPPP) developed by the operator is
consistent with the requirements related to TMDLs contained in Section II D 6.
5. Impaired waters limitation. Discharges to waters that have been identified as impaired in the 2008 §
305(b)/303(d) Water Quality Assessment Integrated Report are not eligible for coverage under this
permit unless the operator implements strategies and control measures consistent with Sections I H and
IID 7.
C. Commingled discharges. Any discharge authorized by a different VSMP or VPDES permit may be
commingled with discharges authorized by this permit.
D. Prohibition of nonstormwater discharges.
1. Except as provided in Sections I A 2, I C and I D 2, all discharges covered by this permit shall be
composed entirely of stormwater associated with construction*oairro 2. The following nonstormwater discharges from active construction sites are authorized by this permit
provided the nonstormwater component of the discharge is in compliance with Section II D 5
(Nonstormwater discharges):
a. Discharges from fire fighting activities;
b. Fire hydrant flushings;
c. Waters used to wash vehicles where detergents are not used;
d. Water used to control dust;
e. Potable water sources, including uncontaminated waterline flushings;
f. Routine external building wash down which does not use detergents;
g. Pavement washwaters where spills or leaks of toxic or hazardous materials have not occurred
(unless all spilled material has been removed) and where detergents are not used;
h. Uncontaminated air conditioning or compressor condensate;
i. Uncontaminated ground water or spring water;
j. Foundation or footing drains where flows are not contaminated with process materials such as
solvents;
k. Uncontaminated excavation dewatering, and
1. Landscape irrigation.
E. Releases of hazardous substances or oil in excess of reportable quantities. The discharge of hazardous
substances or oil in the stormwater discharges from the construction site shall be prevented or minimized in
accordance with the stormwater pollution prevention plan for the site. This permit does not relieve the permittee
'Si„'of the reporting requirements of 40 CFR Part 110 (2002), 40 CFR Part 117 (2002) and 40 CFR Part 302 (2002)
or § 62.1-44.34:19 of the Code of Virginia.
sow, Where a release containing a hazardous substance or oil in an amount equal to or in excess of a reportable
quantity established under either 40 CFR Part 110 (2002), 40 CFR Part 117 (2002), 40 CFR Part 302 (2002), or
§ 62.1-44.34.19 of the Code of Virginia occurs during a 24-hour period:
1. The operator is required to notify the Department of Environmental Quality and the permit-issuing
authority in accordance with the requirements of Section III G as soon as he has knowledge of the
discharge;
2. Where a release enters a municipal separate storm sewer system (MS4), the operator shall also notify
the operator of the MS4; and
3. The stormwater pollution prevention plan required under Section II D of this permit must be reviewed
by the operator to identify measures to prevent the reoccurrence of such releases and to respond to such
releases, and the plan must be modified where appropriate within seven calendar days of knowledge of a
release.
F. Spills. This permit does not authorize the discharge of hazardous substances or oil resulting from an on-
site spill.
G. Termination of permit coverage. Coverage under this permit may be terminated in accordance with
4VAC50-60-1160.
H. Water quality protection.
Vrr 1. The operator must select, install, implement and maintain control measures 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 standards.
2. If it is determined by the permit-issuing authority in consultation with the State Water Control Board
at any time that the operator's stormwater discharges have reasonable potential to cause or contribute to
an excursion above any applicable water quality standard, the permit-issuing authority shall require the
operator to:
a. Modify control measures in accordance with Section II C to adequately address the identified
water quality concerns;
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. Cease discharges of pollutants from construction activity and submit an individual permit
application according to 4VAC50-60-410 B 3.
All written responses required under this part must include a signed certification consistent with Section
III K.
SECTION II - STORMWATER POLLUTION PREVENTION PLAN
A. Stormwater Pollution Prevention Plan Framework.
Star 1. A stormwater pollution prevention plan (SWPPP) shall be developed prior to submission of a
registration statement and implemented for the construction activity covered by this permit. SWPPPs
b44.0. shall be prepared in accordance with good engineering practices.
2. The SWPPP shall:
a. Identify potential sources of pollutants that may reasonably be expected to affect the quality of
stormwater discharges from the construction site;
b. Describe control measures that will be used to minimize pollutants in stormwater discharges from
the construction site; and
c. Comply with the terms and conditions of this permit.
3. The SWPPP requirements of this general permit may be fulfilled by incorporating by reference other
state or local plans such as (i) an erosion and sediment control (ESC) plan, (ii) an agreement in lieu of a
plan as defined in 4VAC50-30-10, (iii) a stormwater management plan, (iv) a spill prevention control
and countermeasure (SPCC) plan developed for the site under § 311 of the federal Clean Water Act or
(v) best management practices (BMP) programs otherwise required for the facility provided that the
incorporated plan meets or exceeds the SWPPP requirements of Section II D. If an erosion and sediment
control plan for the land-disturbing activity is being incorporated by reference, the referenced plan must
be approved by the locality in which the construction activity is to occur or by another appropriate plan
approving authority authorized under the Virginia Erosion and Sediment Control Regulations (4VAC50-
30)prior to the commencement of land disturbance.
4. All plans incorporated by reference into the SWPPP become enforceable under this permit. If a plan
incorporated by reference does not contain all of the required elements of the SWPPP of Section II D,
the operator must develop the missing elements and include them in the required SWPPP.
5. Once a definable area has been finally stabilized, the operator may mark this on the SWPPP and no
Sow." further SWPPP or inspection requirements apply to that portion of the site (e.g., earth-disturbing
activities around one of three buildings in a complex are done and the area is finally stabilized; one mile
of a roadway or pipeline project is done and finally stabilized, etc.).
6. The SWPPP shall identify all properties that are no longer under the control of the operator and the
dates on which the operator no longer had control over each property.
7. The operator must implement the SWPPP as written and updated in accordance with Section II C
from commencement of construction activity until final stabilization is complete.
B. Signature, SWPPP review and making SWPPPs available.
1. The SWPPP shall be signed in accordance with Section III K.
2. The SWPPP shall be retained, along with a copy of this permit, registration statement, and
acknowledgement letter from the permit-issuing authority, at the construction site or other location
easily accessible during normal business hours from the date of commencement of construction activity
to the date of final stabilization. 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 the use of all
operators and those identified as having responsibilities under the SWPPP whenever they are on the
construction site. The SWPPP must be made available, in its entirety, to the department, the permit-
issuing authority, and the operator of a municipal separate storm sewer system receiving discharges
from the site for review at the time of an on-site inspection. 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 at the construction site.
3. The operator shall make SWPPPs and all updates available upon request to the department; the
permit-issuing authority; EPA; a state or local agency approving erosion and sediment control plans,
grading plans, or stormwater management plans; local government officials; or the operator of a
municipal separate storm sewer system receiving discharges from the site.
4. A sign or other notice must be posted conspicuously near the main entrance of the construction site.
The sign or other notice must contain the following information:
a. A copy of the permit coverage letter than includes the registration number for the construction
activity; and
b. The internet address at which a copy of the SWPPP may be found or the location of a hard copy of
the SWPPP and name and telephone number of a contact person for scheduling viewing times.
For linear projects, the sign or other notice must be posted at a publicly accessible location near an
active part of the construction project(e.g., where a pipeline project crosses a public road).
5. For discharges that commence on or after July 1, 2009 that have not previously held coverage under a
VSMP or VPDES permit, the operator shall make the SWPPP available to the public for review. A copy
of the SWPPP for each site shall be made available on the internet or in hard copy. The website address
or contact person for access to the SWPPP shall be posted on the sign required by subdivision B 4 of this
section. If not provided electronically, 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. If a reproduced copy of the SWPPP is provided to
the requestor, the requestor shall be responsible for the costs of reproduction. Information excluded from
disclosure under applicable law shall not be required to be released Information not required to be
contained within the SWPPP by this permit is not required to be released.]
C. Maintaining an updated SWPPP.
1. The operator shall amend the SWPPP whenever there is a change in design, construction, operation,
or maintenance that has a significant effect on the discharge of pollutants to state 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 stormwater discharges from the construction site. Revisions to
the SWPPP shall include additional or modified control measures designed to correct problems
identified. If approval by a plan-approving authority is necessary for the control measure, revisions to
the SWPPP shall be completed within seven calendar days of approval. Implementation of these
additional or modified control measures must be accomplished as described in Section II D 3 b.
3. Revisions to the SWPPP must be dated and signed in accordance with Section III K 2, but are not
required to be certified in accordance with Section III K 4.
4. The SWPPP must clearly identify the contractor(s) or subcontractor(s) that will implement and
maintain each measure identified in the SWPPP. The SWPPP shall be revised to identify any new
contractor that will implement a measure.
D. Stormwater pollution prevention plan contents. The SWPPP shall include the registration statement, this
permit, and the following items:
1. Site and activity description. Each SWPPP shall provide the following information:
a. 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.);
b. The intended sequence and timing of activities that disturb soils at the site (e.g., grubbing,
excavation, grading,utilities and infrastructure installation);
c. A record of the dates when major grading activities occur, when construction activities
temporarily or permanently cease on a portion of the site, and when stabilization measures are
initiated;
d. Estimates of the total area expected to be disturbed by excavation, grading, or other construction
activities including off-site borrow and fill areas;
e. A description of any other potential pollutant sources, such as vehicle fueling, storage of fertilizers
or chemicals, sanitary waste facilities, etc.;
f. Identification of the nearest receiving waters at or near the construction site that will receive
discharges from disturbed areas of the project;
g. The location and description of any discharge associated with industrial activity other than
construction at the site. This includes stormwater discharges from dedicated asphalt plants and
dedicated concrete plants that are covered by this permit;
h. A legible general location map (e.g., USGS quadrangle map, a portion of a city or county map, or
other map) with sufficient detail to identify the location of the construction activity and surface
waters within one mile of the construction activity; and
i. A legible site map identifying:
(1) Directions of stormwater flow and approximate slopes anticipated after major grading activities;
'i`,,,, (2) Areas of soil disturbance and areas of the site which will not be disturbed;
(3) Locations of major structural and nonstructural control measures identified in the SWPPP,
including those that will be permanent after construction activities have been completed;
(4) Locations where stabilization practices are expected to occur;
(5) Locations of surface waters;
(6) Locations where concentrated stormwater discharges;
(7) Locations of off-site material, waste,borrow or equipment storage areas covered by the SWPPP;
(8) Locations of other potential pollutant sources, such as vehicle fueling, storage of chemicals,
concrete wash-out areas, sanitary waste facilities, including those temporarily placed on the
construction site, etc.; and
(9)Areas where final stabilization has been accomplished.
2. Controls to minimize pollutants. The SWPPP shall include a description of all control measures that
will be implemented as part of the construction activity to minimize pollutants in stormwater discharges.
For each major activity identified in the project description, the SWPPP shall clearly describe
appropriate control measures, the general sequencing during the construction process in which the
control measures will be implemented, and which operator is responsible for the control measure's
implementation.
a. Erosion and sediment controls.
(1) An erosion and sediment control plan or an agreement in lieu of a plan shall be approved by the
appropriate plan-approving authority for the land-disturbing activity in accordance with the Virginia
'fir.►, Erosion and Sediment Control Law (§ 10.1-560 et seq.) and regulations (4VAC50-30). Where
applicable, a plan shall be developed in accordance with board-approved annual general erosion and
sediment control specifications.
(2) All control measures required by the plan shall be designed, installed, and maintained in
accordance with good engineering practices and the minimum standards of the Virginia Erosion and
Sediment Control Law(§ 10.1-560 et seq. of the Code of Virginia) and regulations (4VAC50-30).
b. Management practices.
(1) Plans should ensure that existing vegetation is preserved where possible and that disturbed
portions of the site are stabilized.
(2) All control measures must be properly selected, installed, and maintained in accordance with
good engineering practices and, where applicable, manufacturer specifications. If periodic
inspections or other information indicates a control has been used inappropriately or incorrectly, the
operator must replace or modify the control for site situations as soon as practicable and update the
SWPPP in accordance with Section II C.
(3) If sediment escapes the construction site, off-site accumulations of sediment must be removed as
soon as practicable to minimize off-site impacts. If approval by a plan-approving authority is
necessary, control measures shall be implemented to minimize pollutants in stormwater discharges
until such approvals can be obtained.
(4) Construction debris and construction chemicals exposed to stormwater shall be prevented from
becoming a pollutant source in stormwater discharges.
(5) Litter exposed to stormwater shall be prevented from becoming a pollutant source in stormwater
discharges and the construction site shall be policed daily to control litter.
c. Stormwater management.
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(1) The operator shall ensure compliance with the requirements of 4VAC50-60-1180 through
4VAC50-60-1190 of the Virginia Stormwater Management Regulations, including but not limited to
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 local, state, and federal requirements, and any necessary permits must be obtained.
(2) Control measures contained in Part II of the Virginia Stormwater Management Regulations,
4VAC50-60-1184, or on the Virginia BMP Clearinghouse may be utilized. Innovative or alternate
control measures may be allowed by the department provided such measures effectively address
water quality and quantity in accordance with the requirements of 4VAC50-60-1180 through
4VAC50-60-1190 and are not restricted by the locality.
(3) Where applicable, the SWPPP shall contain additional information related to participation in a
regional stormwater management plan, including:
a. Type of regional facility or facilities to which the site contributes;
b. Geographic location of any regional facility to which the site contributes (county or city and
Hydrologic Unit Code);
c. Geographic location of the site (county or city and Hydrologic Unit Code). Latitude and longitude
may additionally be included if available; and
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d. Number of acres treated by a regional facility.
(4) Where applicable, the SWPPP shall contain additional information related to nutrient offsets to
..►, be acquired in accordance with § 10.1-603.8:1 of the Code of Virginia, including:
a.Name of the broker from which offsets will be acquired;
b. Geographic location (county or city and Hydrologic Unit Code) of the broker's offset generating
facility;
c. Number of nutrient offsets to be acquired (lbs. per acre per year); and
d. Nutrient reductions to be achieved on site (lbs. per acre per year).
(5) Outflows from a stormwater management facility or stormwater conveyance system shall be
discharged to an adequate channel as defined in the Virginia Erosion and Sediment Control
Regulations (4VAC50-30). In addition, all control measures shall be employed in a manner that
minimizes impacts on the physical, chemical and biological integrity of rivers, streams, and other
state waters, is protective of water quality standards, and is consistent with Section II D 6 and D 7
and other applicable provisions of this permit.
d. Other controls.
(1) The SWPPP shall describe measures to prevent the discharge of solid materials, including
building materials, garbage, and debris to state waters, except as authorized by a Clean Water Act §
404 permit.
(2) The SWPPP shall describe control measures used to comply with applicable state or local waste
disposal, sanitary sewer or septic system regulations.
(3) The SWPPP shall include a description of construction and waste materials expected to be stored
on-site with updates as appropriate. The SWPPP shall also include a description of controls
including storage practices, to minimize exposure of the materials to stormwater, and for spill
prevention and response.
(4) The SWPPP shall include a description of pollutant sources from off-site areas (including
stormwater discharges from dedicated asphalt plants and dedicated concrete plants), and a
description of control measures that will be implemented at those sites to minimize pollutant
discharges.
e. Applicable state or local programs. The control measures implemented at the site shall be
consistent with all applicable federal, state, or local requirements for erosion and sediment control
and stormwater management. The SWPPP shall be updated as necessary to reflect any revisions to
applicable federal, state or local requirements that affect the control measures implemented at the
site.
3. Maintenance of controls.
a. All control measures must be properly maintained in effective operating condition in accordance
with good engineering practices and, where applicable, manufacturer specifications. If site
inspections required by Section II D 4 identify control measures that are not operating effectively,
maintenance shall be performed as soon as practicable to maintain the continued effectiveness of
stormwater controls.
b. If site inspections required by Section II D 4 identify existing control measures that need to be
modified or if additional control measures are necessary for any reason, implementation shall be
completed before the next anticipated storm event. If implementation before the next anticipated
storm event is impracticable, the situation shall be documented in the SWPPP and alternative control
measures shall be implemented as soon as practicable.
4. Inspections. The name and phone number of qualified personnel conducting inspections shall be
included in the SWPPP.
a. Inspections shall be conducted (i) at least every seven calendar days; or (ii) at least once every 14
calendar days and within 48 hours following any runoff producing storm event. Where areas have
been temporarily stabilized or runoff is unlikely due to winter conditions (e.g., the site is covered
with snow or ice, or frozen ground exists) such inspections shall be conducted at least once every
month.
b. Inspections must include all areas of the site disturbed by construction activity, off-site areas
covered by the permit, and areas used for storage of materials that are exposed to precipitation, but
does not need to include areas identified pursuant to Section II A 5. Inspectors must look for
evidence of, or the potential for, pollutants entering a stormwater conveyance system. Control
measures identified in the SWPPP shall be inspected for proper installation, maintenance, and
operation. Discharge locations, where accessible, shall be inspected to ascertain whether control
measures are effective in minimizing impacts to receiving waters. Where discharge locations are
inaccessible, nearby downstream locations shall be inspected to the extent that such inspections are
practicable. Locations where vehicles enter or exit the site shall be inspected for evidence of off-site
sediment tracking.
c. Utility line installation, pipeline construction, and other examples of long, narrow, linear
construction activities may limit the access of inspection personnel to the areas described in Section
II D 4 b. Inspection of these areas could require that vehicles compromise temporarily or even
permanently stabilized areas, cause additional disturbance of soils, and increase the potential for
erosion. In these circumstances, controls must be inspected on the same frequencies as other
construction projects, but representative inspections may be performed. For representative
inspections, personnel must inspect controls along the construction site for 0.25 miles above and
below each access point where a roadway, undisturbed right-of-way, or other similar feature
intersects the construction site and allows access to the areas described above. The conditions of the
controls along each inspected 0.25-mile segment may be considered as representative of the
condition of controls along that reach extending from the end of the 0.25-mile segment to either the
end of the next 0.25-mile segment, or to the end of the project, whichever occurs first. Inspection
locations must be listed in the report required by Section II D 4 d.
d. A report summarizing the scope of the inspection, names and qualifications of personnel making
the inspection, the dates of the inspection, major observations relating to the implementation of the
SWPPP, and actions taken in accordance with Section II D 4 d of the permit shall be made and
retained as part of the SWPPP in accordance with Section III B of this permit. Major observations
should include:
(1) The location(s) of discharges of sediment or other pollutants from the site;
(2) Location(s) of control measures that need to be maintained;
(3) Location(s) of control measures that failed to operate as designed or proved inadequate for a
particular location;
(4) Location(s) where additional control measures are needed that did not exist at the time of
inspection;
(5) Corrective action required including any changes to the SWPPP that are necessary and
implementation dates;
(6) An estimate of the amount of rainfall at the construction site (in inches) from the runoff
producing storm event requiring the inspection, or if inspecting on a seven-day schedule, the amount
`fire of rainfall (in inches) since the previous inspection; and
(7) Weather information and a description of any discharges occurring at the time of inspection.
A record of each inspection and of any actions taken in accordance with Section II must be retained by
the operator as part of the SWPPP for at least three years from the date that permit coverage expires or is
terminated. The inspection reports shall identify any incidents of noncompliance. Where a report does
not identify any incidents of noncompliance, the report shall contain a certification that the facility is in
compliance with the SWPPP and this permit. The report shall be signed in accordance with Section III K
of this permit.
5. Nonstormwater discharge management. The SWPPP shall identify all allowable sources of
nonstormwater discharges listed in Section I D 2 of this permit that are combined with stormwater
discharges from the construction activity at the site, except for flows from fire fighting activities. The
SWPPP shall identify and require the implementation of appropriate control measures for the
nonstormwater components of the discharge.
6. Total maximum daily loads. A total maximum daily load (TMDL) approved by the State Water
Control Board may include a wasteload allocation to the regulated construction activity that identifies
the pollutant for which stormwater control measures are necessary for the surface waters to meet water
quality standards. The pollutant identified in a wasteload allocation as of the effective date of this permit
must be specified in the SWPPP. The SWPPP shall include strategies and control measures to ensure
consistency with the assumptions and requirements of the TMDL WLA that apply to the operator's
discharge. In a situation where a TMDL has specified a general wasteload allocation applicable to
construction stormwater discharges, but no specific requirements for construction sites have been
identified in the TMDL, the operator shall consult with the state or federal TMDL authority to confirm
that meeting permit requirements will be consistent with the approved TMDL. If the TMDL specifically
precludes such discharges, the operator is not eligible for coverage under the general permit.
7. Impaired waters. In accordance with Section I H, control measures shall be protective of water quality
standards for impaired waters identified as having impairments for pollutants that may be discharged
from the construction activity in the 2008 § 305(b)/303(d)Water Quality Assessment Integrated Report .
SECTION III-CONDITIONS APPLICABLE TO ALL VSMP PERMITS
NOTE: Discharge monitoring is not required for this 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 (2001) or
alternative methods approved by the U.S. Environmental Protection Agency, unless other procedures
have been specified in this permit.
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 permit, and records of all data used to complete the registration
statement for this 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 permit,unless another reporting schedule is specified elsewhere in this 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 permit more frequently than
required by this permit using test procedures approved under 40 CFR Part 136 (2001) or using other test
procedures approved by the U.S. Environmental Protection Agency or using procedures specified in this
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 permit.
D. Duty to provide information. The operator shall furnish, within a reasonable time, any information which
the board, department, or other permit-issuing authority may request to determine whether cause exists for
modifying, revoking and reissuing, or terminating this permit or to determine compliance with this permit. The
board, department, or other permit-issuing 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 state 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, or other permit-issuing authority, upon request, copies of records required to be kept by this
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 permit shall be submitted no later
than 14 days following each schedule date.
F. Unauthorized stormwater discharges. Pursuant to § 10.1-603.2:2 A of the Code of Virginia, except in
compliance with a permit issued by the permit-issuing authority, 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 (2002), 40
CFR Part 117 (2002), or 40 CFR Part 302 (2002) that occurs during a 24-hour period into or upon state waters
or who discharges or causes or allows a discharge that may reasonably be expected to enter state 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, the Department of Environmental Quality, and the permit-issuing
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 permit.
Discharges reportable to the department, the Department of Environmental Quality, and the permit-
issuing 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 state waters, the operator shall promptly notify, in no case later than within 24 hours, the
department, the Department of Environmental Quality, and the permit-issuing 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, the Department of Environmental Quality, and the permit-issuing
authority within five days of discovery of the discharge in accordance with Section III I 2. 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 state
waters or may endanger public health.
1. An oral report to the department, the Department of Environmental Quality, and the permit-issuing
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:
a. Any unanticipated bypass; and
b. Any upset that causes a discharge to state 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 permit-issuing authority may waive the written report on a case-by-case basis for reports of
noncompliance under Section III I if the oral report has been received within 24 hours and no
adverse impact on state waters has been reported.
3. The operator shall report all instances of noncompliance not reported under Section III I 1 or 2 in
writing as part of the SWPPP. The reports shall contain the information listed in Section III I 2.
NOTE: The reports required in Section III G, H and I shall be made to the department's Stormwater
Program Section of the Division of Soil and Water Conservation, appropriate Department of
Environmental Quality's Regional Office Pollution Response Program, and the permit-issuing authority.
Sumo Reports may be made by telephone 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 permit-issuing
authority, the operator shall promptly submit such facts or correct information.
J.Notice of planned changes.
1. The operator shall give notice to the permit-issuing 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 4VAC50-60-420;
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 permit; or
2. The operator shall give advance notice to the permit-issuing authority of any planned changes in the
permitted facility or activity, which may result in noncompliance with 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 part, a responsible
corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in
Stave 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; 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 part, 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 permits, including SWPPPs, and other information requested by
the board, the department, or the permit-issuing authority shall be signed by a person described in
Section 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 Section 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
*tow 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 permit-issuing authority, if requested.
3. Changes to authorization. If an authorization under Section 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 Section III K 2 shall be submitted to the permit-issuing
authority prior to or together with any reports or information to be signed by an authorized
representative.
4. Certification. Any person signing a document under Section 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 permit. Any permit noncompliance
constitutes a violation of the Virginia Stormwater Management Act and the Clean Water Act, except that
noncompliance with certain provisions of this 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
permit termination, revocation and reissuance, or modification; or denial of a 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 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 permit after the
expiration date of this permit, the operator shall submit a new registration statement at least 90 days before the
expiration date of the existing 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 permit.
N. Effect of a permit. This 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 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
44141.r law or regulation or under authority preserved by § 510 of the Clean Water Act. Except as provided in permit
conditions on "bypassing" (Section III U) and "upset" (Section III V), nothing in this permit shall be construed
to relieve the operator from civil and criminal penalties for noncompliance.
P. Oil and hazardous substance liability. Nothing in this 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 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 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 state waters and in compliance with all applicable state and federal laws and regulations.
fir.+
S. Duty to mitigate. The operator shall take all reasonable steps to minimize or prevent any discharge in
violation of this 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 permit.
U. Bypass.
1. "Bypass", as defined in 4VAC50-60-10, 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 essential maintenance to ensure efficient operation.
These bypasses are not subject to the provisions of Section III U 2 and 3 herein.
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
Section III I herein.
3. Prohibition of bypass.
a. Except as provided in Section III U 1, bypass is prohibited, and the permit-issuing authority 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 Section III U 2.
b. The permit-issuing authority may approve an anticipated bypass, after considering its adverse
effects, if the permit-issuing authority determines that it will meet the three conditions listed in
Section III U 3 a.
V. Upset.
1. An upset, as defined in 4VAC50-60-10, means an exceptional incident in which there is unintentional
and temporary noncompliance with technology based 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 permit effluent limitations if the requirements of Section III V 2 herein 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;
c. The operator submitted notice of the upset as required in Section III I herein; and
d. The operator complied with any remedial measures required under Section III S herein.
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 permit-issuing
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 permit;
2. Have access to and copy, at reasonable times, any records that must be kept under the conditions of
this permit;
3. Inspect and photograph at reasonable times any facilities, equipment (including monitoring and
control equipment),practices, or operations regulated or required under this permit; and
4. Sample or monitor at reasonable times, for the purposes of ensuring 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. Permit actions. Permits may be modified, revoked and reissued, or terminated for cause. The filing of a
request by the operator for a permit modification, revocation and reissuance, or termination, or a notification of
planned changes or anticipated noncompliance does not stay any permit condition.
Y. Transfer of permits.
1. Permits are not transferable to any person except after notice to the permit-issuing authority. Except
as provided in Section III Y 2, a permit may be transferred by the operator to a new operator only if the
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 Section III Y 1, this permit may be automatically transferred to a
Sire new operator if:
a. The current operator notifies the permit-issuing authority 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 permit responsibility, coverage, and liability between them; and
c. The permit-issuing authority does not notify the existing operator and the proposed new operator
of its intent to modify or revoke and reissue the permit. If this notice is not received, the transfer is
effective on the date specified in the agreement mentioned in Section 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.
Z. Severability. The provisions of this permit are severable, and if any provision of this permit or the
application of any provision of this permit to any circumstance, is held invalid, the application of such provision
to other circumstances and the remainder of this permit shall not be affected thereby.
4VAC50-60-1180.Applicability.
Operators receiving coverage under this general permit shall remain subject to the water quality and
quantity criteria set forth in 4VAC50-60-1182 through 4VAC50-60-1190, which specify technical criteria tot., every land-disturbing activity regulated by this general permit.
4VAC50-60-1182. General.
A. Determination of flooding and channel erosion impacts to receiving streams due to land-disturbing
activities shall be measured at each point of discharge from the land disturbance and such determination shall
include any runoff from the balance of the watershed that also contributes to that point of discharge.
B. The specified design storms shall be defined as either a 24-hour storm using the rainfall distribution
recommended by the U.S. Department of Agriculture's Natural Resources Conservation Service (NRCS) when
using NRCS methods or as the storm of critical duration that produces the greatest required storage volume at
the site when using a design method such as the Modified Rational Method.
C. For purposes of computing runoff, all pervious lands in the site shall be assumed prior to development to
be in good condition (if the lands are pastures, lawns, or parks), with good cover (if the lands are woods), or
with conservation treatment (if the lands are cultivated); regardless of conditions existing at the time of
computation.
D. Construction of stormwater management facilities or modifications to channels shall comply with all
applicable laws and regulations. Evidence of approval of all necessary permits shall be presented.
Sore
E. Impounding structures that are not covered by the Impounding Structure Regulations (4VAC50-20) shall
sow be engineered for structural integrity during the 100-year storm event.
F. Predevelopment and postdevelopment runoff rates shall be verified by calculations that are consistent
with good engineering practices.
G. Outflows from a stormwater management facility or stormwater conveyance system, shall be discharged
to an adequate channel.
H. Proposed residential, commercial, or industrial subdivisions shall apply these stormwater management
criteria to the land disturbance as a whole. Individual lots in new subdivisions shall not be considered separate
land-disturbing activities, but rather the entire subdivision shall be considered a single land development
project. Hydrologic parameters shall reflect the ultimate land disturbance and shall be used in all engineering
calculations.
I. All stormwater management facilities shall have an inspection and maintenance plan that identifies the
owner and the responsible party for carrying out the inspection and maintenance plan.
J. Construction of stormwater management impoundment structures within a Federal Emergency
Management Agency (FEMA) designated 100-year floodplain shall be avoided to the extent possible. When
this is unavoidable, all stormwater management facility construction shall be in compliance with all applicable
regulations under the National Flood Insurance Program, 44 CFR Part 59.
K. Natural channel characteristics shall be preserved to the maximum extent practicable.
L. Land-disturbing activities shall comply with the Virginia Erosion and Sediment Control Law (§ 10.1-560
et seq. of the Code of Virginia) and attendant regulations.
M. Flood control and stormwater management facilities that drain or treat water from multiple development
projects or from a significant portion of a watershed may be allowed in Resource Protection Areas defined in
the Chesapeake Bay Preservation Act, provided that (i) the local government has conclusively established that
the location of the facility within the Resource Protection Area is the optimum location; (ii) the size of the
facility is the minimum necessary to provide necessary flood control, stormwater treatment, or both; and (iii) the
facility must be consistent with a stormwater management program that has been approved by the board, the
Chesapeake Bay Local Assistance Board,or the Board of Conservation and Recreation.
4VAC50-60-1184.Water quality.
A. Compliance with the water quality criteria may be achieved by applying the performance-based criteria
or the technology-based criteria to either the site or a planning area.
Si,,, B. Performance-based criteria. For land-disturbing activities, the calculated postdevelopment nonpoint
source pollutant runoff load shall be compared to the calculated predevelopment load based upon the average
sr land cover condition or the existing site condition. A BMP shall be located, designed, and maintained to achieve
the target pollutant removal efficiencies specified in Table 1 of this section to effectively reduce the pollutant
load to the required level based upon the following four applicable land development situations for which the
performance criteria apply:
1. Situation 1 consists of land-disturbing activities where the existing percent impervious cover is less
than or equal to the average land cover condition and the proposed improvements will create a total
percent impervious cover that is less than the average land cover condition.
Requirement: No reduction in the after disturbance pollutant discharge is required.
2. Situation 2 consists of land-disturbing activities where the existing percent impervious cover is less
than or equal to the average land cover condition and the proposed improvements will create a total
percent impervious cover that is greater than the average land cover condition.
Requirement: The pollutant discharge after disturbance shall not exceed the existing pollutant discharge
based on the average land cover condition.
3. Situation 3 consists of land-disturbing activities where the existing percent impervious cover is
greater than the average land cover condition.
Requirement: The pollutant discharge after disturbance shall not exceed (i)the pollutant discharge based
on existing conditions less 10% or(ii) the pollutant discharge based on the average land cover condition,
whichever is greater.
4. Situation 4 consists of land-disturbing activities where the existing percent impervious cover is served
by an existing stormwater management BMP that addresses water quality.
Requirement: The pollutant discharge after disturbance shall not exceed the existing pollutant discharge
based on the existing percent impervious cover while served by the existing BMP. The existing BMP
shall be shown to have been designed and constructed in accordance with proper design standards and
specifications, and to be in proper functioning condition.
C. Technology-based criteria. For land-disturbing activities, the postdeveloped stormwater runoff from the
impervious cover shall be treated by an appropriate BMP as required by the postdeveloped condition percent
impervious cover as specified in Table 1 of this section. The selected BMP shall be located, designed, and
maintained to perform at the target pollutant removal efficiency specified in Table 1. Design standards and
specifications for the BMPs in Table 1 that meet the required target pollutant removal efficiency will be
available at the department.
Table 1*
Water Quality BMP* Target Phosphorus Percent Impervious
Removal Efficiency Cover
Vegetated filter strip 10% 16-21%
Grassed Swale 15%
Constructed wetlands 20% 22-37%
Extended detention(2 x WQ Vol) 35%
Retention basin I (3 x WQ Vol) 40%
Bioretention basin 50% 38-66%
Stowe Bioretention filter 50%
Extended detention-enhanced 50%
Retention basin II (4 x WQ Vol) 50%
Infiltration(1 x WQ Vol) 50%
Sand filter 65% 67-100%
Infiltration (2 x WQ Vol) 65%
Retention basin III (4 x WQ Vol 65%
with aquatic bench)
*Innovative or alternate BMPs not included in this table may be allowed at the discretion of the local program
administrator or the department. Innovative or alternate BMPs not included in this table that target appropriate
nonpoint source pollution other than phosphorous may be allowed at the discretion of the local program
administrator or the department.
4VAC50-60-1186. Stream channel erosion.
loose A. Properties and receiving waterways downstream of any land-disturbing activity shall be protected from
erosion and damage due to changes in runoff rate of flow and hydrologic characteristics, including but not
limited to, changes in volume, velocity, frequency, duration, and peak flow rate of stormwater runoff in
accordance with the minimum design standards set out in this section.
B. The permit-issuing authority shall require compliance with subdivision 19 of 4VAC50-30-40 of the
Erosion and Sediment Control Regulations, promulgated pursuant to Article 4 (§ 10.1-560 et seq.) of Chapter 5
of Title 10.1 of the Code of Virginia.
C. The permit-issuing authority may determine that some watersheds or receiving stream systems require
enhanced criteria in order to address the increased frequency of bankfull flow conditions (top of bank) brought
on by land-disturbing activities. Therefore, in lieu of the reduction of the two-year post-developed peak rate of
runoff as required in subsection B of this section, the land development project being considered shall provide
24-hour extended detention of the runoff generated by the one-year, 24-hour duration storm.
D. In addition to subsections B and C of this section, permit-issuing authorities, by local ordinance may, or
the board by state regulation may, adopt more stringent channel analysis criteria or design standards to ensure
that the natural level of channel erosion, to the maximum extent practicable, will not increase due to the land-
disturbing activities. These criteria may include,but are not limited to, the following:
1. Criteria and procedures for channel analysis and classification.
2. Procedures for channel data collection.
3. Criteria and procedures for the determination of the magnitude and frequency of natural sediment
Skive transport loads.
4. Criteria for the selection of proposed natural or manmade channel linings.
4VAC50-60-1188. Flooding.
A. Downstream properties and waterways shall be protected from damages from localized flooding due to
changes in runoff rate of flow and hydrologic characteristics, including but not limited to, changes in volume,
velocity, frequency, duration, and peak flow rate of stormwater runoff in accordance with the minimum design
standards set out in this section.
B. The 10-year post-developed peak rate of runoff from the development site shall not exceed the 10-year
pre-developed peak rate of runoff.
C. In lieu of subsection B of this section, localities may, by ordinance, adopt alternate design criteria based
upon geographic, land use, topographic, geologic factors or other downstream conveyance factors as
appropriate.
D. Linear development projects shall not be required to control post-developed stormwater runoff for
1 flooding, except in accordance with a watershed or regional stormwater management plan.
4VAC50-60-1190. Regional (watershed-wide) stormwater management plans.
This section enables localities to develop regional stormwater management plans. State agencies intending
to develop large tracts of land such as campuses or prison compounds are encouraged to develop regional plans
where practical.
The objective of a regional stormwater management plan is to address the stormwater management concerns
in a given watershed with greater economy and efficiency by installing regional stormwater management
facilities versus individual, site-specific facilities. The result will be fewer stormwater management facilities to
design, build and maintain in the affected watershed. It is also anticipated that regional stormwater management
facilities will not only help mitigate the impacts of new development, but may also provide for the remediation
of erosion, flooding or water quality problems caused by existing development within the given watershed.
If developed, a regional plan shall, at a minimum, address the following:
1. The specific stormwater management issues within the targeted watersheds.
2. The technical criteria in 4VAC50-60-1180 through 4VAC50-60-1188 as needed based on subdivision
1 of this section.
3. The implications of any local comprehensive plans, zoning requirements, local ordinances pursuant to
the Chesapeake Bay Preservation Area Designation and Management Regulations adopted pursuant to
the Chesapeake Bay Preservation Act, and other planning documents.
4. Opportunities for financing a watershed plan through cost sharing with neighboring agencies or
` ✓ localities, implementation of regional stormwater utility fees, etc.
5. Maintenance of the selected stormwater management facilities.
Stave 6. Future expansion of the selected stormwater management facilities in the event that development
exceeds the anticipated level.
`446.
PROJECT CHECKLIST
APPLICABLE PROJECT CHECKLIST
NOTE-
The operator must implement the SWPPP as written from commencement of construction activity until
fmal stabilization is complete.
A. Deadlines for SWPPP preparation and compliance.
1. The SWPPP shall be prepared prior to submittal of the registration statement and provide for compliance with
the terms and schedule of the plan beginning with the initiation of construction activities.
• Acknowledged.
2. 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.
• Acknowledged
B. Signature,plan review and making plans available.
1. The SWPPP shall be signed in accordance with Section III K.
• This report has been signed.
2. The SWPPP shall be retained, along with a copy of this permit at the construction site from the date of
commencement of construction activity to the date of final stabilization. Permittees with day-to-day
ice,, operation control over SWPPP implementation shall have a copy of the plan available at a central location
on-site for the use of all operators and those identified as having responsibilities under the plan whenever
they are on the construction site. The SWPPP must be made available, in its entirety, to the department and
the permitting issuing authority for review at the time of an on-site inspection.
• Acknowledged.
3. The permittee shall make SWPPP's available upon request to the department; the permit issuing authority; a
state or local agency approving erosion and sediment plans, grading plans, or stormwater management
plans; local government officials; or the operator of a municipal separate storm sewer system receiving
discharges from the site.
• Acknowledged.
C. Maintaining an updated SWPPP.
1. The permittee shall amend the SWPPP whenever there is a change in 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.
• Acknowledged.
2. The SWPPP must be amended if during inspections or investigations by site staff, or by local, state or federal
officials, it is determined that the discharges are causing water quality exceedances, or the SWPPP is
ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the
construction site.
• Acknowledged.
3. Based on the results of an inspection,the SWPPP must be modified as necessary to include additional or
modified BMP's designed to correct problems identified. Revisions to the SWPPP must be completed
within seven calendar days following the inspection. Implementation of these additional or modified BMP's
must be accomplished as described in Section II D 3 b.
• Acknowledged.
4. The SWPPP must clearly identify for each measure identified in the plan, the contractor(s) or
subcontractor(s)that will implement the measure. The SWPPP shall be amended to identify any new
contractor that will implement a measure of the plan.
• The landowner is currently the administrator of this project.A site contractor has not been
selected. They shall eventually take ownership of this document and responsibility for the proper
execution of the work.As site planner,Mark E. Keller, CLA is currently satisfying the role of
Responsible Land Disturber until such time as actual land disturbance is to take place.
D. Stormwater pollution prevention plan contents.
The SWPPP shall include the following items:
ik,,,,, 1. Site and activity description. Each SWPPP shall provide the following information:
a. A description of the nature of the construction activity, including the function of the project(e.g., low
density residential, shopping mall, highway, etc.);
• The project involves the construction of a shopping center addition.
b. The intended sequence and timing of activities that disturb soils at the site(e.g., grubbing, excavation,
grading, utilities and infrastructure installation).
• Noted on plans.
c. Estimates of the total area expected to be disturbed by excavation, grading, or other construction activities
including off-site borrow and fill areas;
• Noted on plans.
d. A description of any other potential pollution sources, such as vehicle fueling, storage of fertilizers or
chemicals, sanitary waste facilities, etc.
• N/A
e. Identification of the nearest receiving waters at or near the construction site that will receive discharges
from disturbed areas of the project;
• Nearest receiving waters has been noted on DCR form.
f. The location and description on any discharge associated with industrial activity other than construction at
the site. This includes stormwater discharges from dedicated asphalt plants and dedicated concrete plants
that are covered by this permit.
• N/A
g. A site map indicating:
(1) Directions of stormwater flow and approximate slopes anticipated after major grading activities;
• Noted on plans.
(2)Areas of soil disturbance and areas of the site which will not be disturbed;
• Noted on plans.
(3) Locations of major structural and nonstructural controls identified in the SWPPP, including those that will
‘1610. be permanent controls that will remain after construction activities have been completed;
• Noted on plans.
(4) Locations where stabilization practices are expected to occur;
• Noted on plans.
(5) Surface water bodies (including wetlands);
• Noted on plans.
(6) Locations where stormwater discharges to a surface water;
• Noted on plans.
(7) Locations of off-site material, waste,borrow or equipment storage areas covered by the plan;
• N/A
(8) Locations of other potential pollution sources, such as vehicle fueling, storage of chemicals, sanitary waste
facilities, etc.; and
• N/A
(9) Areas where final stabilization has been accomplished and no further construction-phase permit
requirements apply.
• N/A
2. Controls to reduce pollutants. The SWPPP shall include a description of all pollution control measures that
will be implemented as part of the construction activity to control pollutants in stormwater discharges. For
each major activity identified in the project description,the SWPPP shall clearly describe appropriate
control measures, the general sequencing during the construction process in which the measures will be
implemented, and which operator is responsible for the control measure's implementation.
a. Erosion and sediment controls.
(1) Stabilization practices. The SWPPP shall include a description of interim and permanent stabilization
practices for the site. Site plans should ensure that existing vegetation is preserved where attainable and that
disturbed portions of the site are stabilized. Stabilization practices may include,but are not limited to:
temporary seeding,permanent seeding,mulching, geotextiles, sod stabilization, vegetative buffer strips,
protection of trees,preservation of mature vegetation,riprap, gabions, facines,biologs and other appropriate
measures. Use of impervious surfaces for stabilization should be avoided.
(a)A record of the dates when major grading activities occur,when construction activities temporarily or
permanently cease on a portion of the site, and when stabilization measures are initiated shall be maintained
and included in the SWPPP.
• See Addendum 2.
(b) Except as provided in Section II D 2 a(1) (c), (d) and(e), stabilization measures shall be initiated as soon as
practicable in portions of the site where construction activities have temporarily or permanently ceased,but
in no case more than seven days after the construction activity in that portion of the site has temporarily or
permanently ceased.
• Acknowledged.
(c)Where the initiation of stabilization measures by the seventh day after construction activity temporary or
permanently ceased is precluded by snow cover or frozen ground conditions, stabilization measures shall be
initiated as soon as practicable.
• Acknowledged.
(d) Where construction activity on a portion of the site is temporarily ceased, and earth disturbing activities will
be resumed within 30 days, temporary stabilization measures do not have to be initiated on that portion of
the site.
• Acknowledged.
(e) In drought-stricken areas where initiating perennial vegetative stabilization measures is not possible
within seven days after construction activity has temporarily or permanently ceased, final vegetative
stabilization measures shall be initiated as soon as practicable.
• Acknowledged.
(2) Structural practices. The SWPPP shall include a description of structural practices to divert flows from
exposed soils,retain/detain flows or otherwise limit runoff and the discharge of pollutants from exposed
areas of the site. Such practices may include,but are not limited to: silt fences, earth dikes, drainage swales,
sediment traps, check dams, subsurface drains,pipe slope drains, level spreaders, storm drain inlet
protection,rock outlet protection,reinforced soil retaining systems, gabions, and temporary or permanent
sediment basins. Structural practices should be located on upland soils to the degree attainable. The
sr department and the permit issuing authority encourage the use of a combination of erosion and sediment
control measures in order to achieve maximum pollutant removal.
(a) Sediment basins: For common drainage locations that serve an area with three or more acres disturbed at one
time, a temporary(or permanent) sediment basin providing 3,618 cubic feet of storage per acre drained, or
equivalent control measures, shall be provided where attainable until final stabilization of the site. The 3,618
cubic feet of storage area per acre drained does not apply to flows from off-site areas and flows from on-site
areas that are either undisturbed or have undergone final stabilization where such flows are diverted around
both the disturbed area and the sediment basin. In determining whether installing a sediment basin is
attainable,the permittee may consider factors such as site soils, slope, available area on site, etc. In any
event,the permittee must consider public safety, especially as it relates to children, as a design factor for the
sediment basin and alternative sediment controls shall be used where site limitations would preclude a safe
design.
• Noted on plans.
(b) For drainage locations which serve three or more acres at one time and where a temporary sediment
basin or equivalent controls is not attainable, smaller sediment basins and/or sediment traps should be used.
At a minimum, silt fences, vegetative buffer strips, or equivalent sediment controls are required for all down
slope boundaries, and for those side slope boundaries deemed appropriate as dictated by individual site
conditions.
• Noted on plans.
`,,(c) For drainage locations serving less than three acres, smaller sediment basins or sediment traps or both should
be used. At a minimum, silt fences, vegetative buffer strips or equivalent sediment controls are required for
all down-slope boundaries, and for those side slope boundaries deemed appropriate as dictated by individual
site conditions, of the construction area unless a sediment basin providing storage for 3,618 cubic feet of
storage per acre drained is provided.
• Noted on plans.
b. Management practices.
(1)All control measures must be properly selected, installed, and maintained in accordance with manufacturer
specifications and good engineering practices. If periodic inspections or other information indicates a
control has been used inappropriately,or incorrectly, the permittee must replace or modify the control for
site situations as soon as practicable.
• Acknowledged.
(2) If sediment escapes the construction site, off-site accumulations of sediment must be removed at a frequency
sufficient to minimize off-site impacts.
• Acknowledged.
(3) Litter, construction debris, and construction chemicals exposed to stormwater shall be prevented from
becoming a pollutant source in stormwater discharges.
• Acknowledged.
c. Stormwater management.
(1) The SWPPP shall include a description of, and all necessary calculations supporting, all post-construction
stormwater management measures that will be installed during 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 attainable. Such measures must be designed and installed in accordance
with applicable local and/or state requirements.
• Noted on plans.
(2) Such measures may include,but are not limited to: stormwater detention structures (including dry ponds);
stormwater retention structures; flow attenuation by use of open vegetated swales and natural depressions;
infiltration of runoff on-site; stormwater wetlands; sand filters;bio-retention systems; water quality
structures; and sequential systems (which combine several practices). The SWPPP shall include an
explanation of the technical basis used to select the practices to control pollution and flows that exceed
predevelopment levels.
• Noted on plans.
(3) Outflows from a stormwater management facility or stormwater conveyance system shall be discharged to
an adequate channel. In addition,the natural, physical, chemical, and biological characteristics and functions
of the receiving waters must be maintained and protected (e.g.,no significant changes in the hydrological
regime of the receiving water).
• Noted on plans.
,,,d. Other controls.
(1) The SWPPP shall describe measures to prevent the discharge of solid materials, including building
materials, garbage, and debris to surface waters of the state, except as authorized by a Clean Water Act §
404 permit.
• Solid waste in the form of cleared trees,grubbed stumps, cut pavement sections and other inert
materials are to be exported to the Van der Linde recycling center in Zion Crossroads,VA.
• The site will be enclosed within safety fencing and diversion berms to prevent migration of debris
as well as control access to the site during construction.
(2) Where construction vehicle access routes intersect paved 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
public road surface,the road 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.
• Noted on plans.
(3) The SWPPP shall ensure and demonstrate compliance with applicable state or local waste disposal, sanitary
sewer or septic system regulations.
• The proposed facility will be connected to public water and sewer infrastructure.All work will be
performed in accordance with state and local design and installation regulations and guidelines
and inspected by the Albemarle County Service Authority. The contractor shall post all required
bonds and will have a permit in place prior to commencement of work.
, (4) The SWPPP shall include a description of construction and waste materials expected to be stored on-site
with updates as appropriate. The plan shall also include a description of controls to reduce pollutants from
these materials, including storage practices to minimize exposure of the materials to stormwater, and for
spill prevention and response.
• All construction waste materials are to be stored in waste containers provided by the recycling
facility and emptied regularly.
(5) The SWPPP shall include a description of pollutant sources from areas other than construction (including
stormwater discharges from dedicated asphalt plants and dedicated concrete plants), and a description of
controls and measures that will be implemented at those sites to minimize pollutant discharges.
• N/A
e. Applicable state or local programs.
The SWPPP shall be consistent with all applicable state or local requirements for erosion and sediment
control and stormwater management including updates to the SWPPP as necessary to reflect any revisions
to applicable state or local requirements for erosion and sediment control and stormwater management.
• The Erosion & Sediment Control Plan has been submitted,reviewed and approved by the local
Engineering Department.Approval of the overall site plan is pending due to legal matters
associated with easements.All required bonds shall be posted and a permit in place prior to
commencement of work.
totowe,3. Maintenance of controls.
a. The SWPPP must include a description and schedule of procedures to maintain in good and effective
operating conditions vegetation, erosion and sediment control measures and other protective measures
during construction identified in the site plan. If site inspections required by Section II D 4 identify BMP's
that are not operating effectively, maintenance shall be performed before the next anticipated storm event,
or as soon as practicable to maintain the continued effectiveness of stormwater controls.
• Noted on plans.
b. If existing BMP's need to be modified or if additional BMP's are necessary for any reason, implementation
shall be completed before the next anticipated storm event. If implementation before the next anticipated
storm event is impracticable, the situation shall be documented in the SWPPP and alternative BMP's shall
be implemented as soon as practicable.
• Acknowledged.
4. Inspections. Inspections by qualified personnel must be conducted of all areas of the site disturbed by
construction activity, and areas used for storage of materials that are exposed to stormwater. "Qualified
personnel"means a licensed professional engineer,responsible land disturber(RLD), or other
knowledgeable person who (i)holds a certificate of competence from the board in the area of project
inspection; or(ii) is enrolled in the board's training program for project inspection or combined
administrator and successfully completes such program within one year of enrollment.
a. Inspections shall be conducted at least once every 14 calendar days and within 48 hours of the end of any
`rr runoff producing storm event. Where areas have been finally or temporarily stabilized or runoff is unlikely
due to winter conditions (e.g., the site is covered with snow or ice, or frozen ground exists) such inspections
shall be conducted at least once every month.
• Acknowledged.
b. Inspectors must look for evidence of, or the potential for,pollutants entering the stormwater conveyance
system. Erosion and sediment control measures identified in the SWPPP shall be observed to ensure proper
operation. Discharge locations where accessible shall be inspected to ascertain whether erosion and
sediment control measures are effective in preventing significant impacts to receiving waters. Where
discharge locations are inaccessible, nearby downstream locations shall be inspected to the extent that such
inspections are practicable. Locations where vehicles enter or exit the site shall be inspected for evidence of
off-site sediment tracking.
• Acknowledged.
c. Utility line installation,pipeline construction, and other examples of long, narrow, linear construction
activities may limit the access of inspection personnel to the areas described in Section II D 4 b. Inspection
of these areas could require that vehicles compromise temporarily or even permanently stabilized areas,
cause additional disturbance of soils, and increase the potential for erosion. In these circumstances, controls
must be inspected on the same frequencies as other construction projects,but representative inspections may
be performed. For representative inspections,personnel must inspect controls along the construction site for
0.25 miles above and below each access point where a roadway,undisturbed right-of-way, or other similar
feature intersects the construction site and allows access to the areas described above. The conditions of the
slime controls along each inspected 0.25-mile segment may be considered as representative of the condition of
controls along that reach extending from the end of the 0.25-mile segment to either the end of the next 0.25-
mile segment, or to the end of the project, whichever occurs first. Inspection locations must be listed in the
report required by Section II D 4 e.
• Acknowledged; See 4.e.
d. Based on the results of the inspection, the site and activity description identified in the plan in accordance
with Section II D 1 of this permit and pollution prevention measures identified in the SWPPP in accordance
with Section II D 2 of this permit shall be revised as appropriate within seven calendar days following the
inspection.
• Acknowledged.
e. A report summarizing the scope of the inspection,names and qualifications of personnel making the
inspection,the dates of the inspection,major observations relating to the implementation of the SWPPP, and
actions taken in accordance with Section II D 4 d of the permit shall be made and retained as part of the
SWPPP in accordance with Section III B of this permit. Major observations should include:
• See Addendum 3.
(1) The location(s) of discharges of sediment or other pollutants from the site;
(2) Location(s) of BMP's that need to be maintained;
(3) Location(s) of BMP's that failed to operate as designed or proved inadequate for a particular location;
(4) Location(s)where additional BMP's are needed that did not exist at the time of inspection; and
(5) Corrective action required including any changes to the SWPPP that are necessary and implementation
dates.
The reports shall identify any incidents of noncompliance. Where a report does not identify any incidents of
noncompliance, the report shall contain a certification that the facility is in compliance with the stormwater
pollution prevention plan and this permit.
The report shall be signed in accordance with Section III K of this permit.
5. Non-stormwater discharge management. The SWPPP shall identify all allowable sources of nonstormwater
discharges listed in Section I D 2 of this permit that are combined with stormwater discharges from the
construction activity at the site, except for flows from fire fighting activities. The SWPPP shall identify and
ensure the implementation of appropriate pollution prevention measures for the non-stormwater components
of the discharge.
• Please reference Section I D 2 of this permit for all allowable sources of non-stormwater
discharges.
DCR / VSMP PERMIT FORMS
THIS PROJECT IS NEARLY READY TO BREAK GROUND
AND I HAVE SPENT CONSIDERABLE TIME AND MONEY
TO ENGINEER THE SITE PLAN. I WISH TO HAVE THIS
PROJECT PERMITTED UNDER THE REGULATIONS
THAT WERE IN PLACE AT THE TIME OF SITE
PLANNING, WHICH, AS I UNDERSTAND, ARE STILL
CURRENT AS OF THIS DATE. LACKING ANY CLEAR
DIRECTION FROM THOSE IN CHARGE OF
ADMINSTERING THIS PROGRAM AT THE LOCAL LEVEL,
I AM PROVIDING BOTH THE OLD AND NEW FORMS
ASSOCIATED WITH FILING, AS WELL AS CHECKS TO
COVER THE DIFFERENT FEE AMOUNTS THAT APPLY IN
EACH APPLICATION. I AM ASKING THAT THE DEQ
QUICKLY ISSUE THE PERMIT UNDER WHATEVER
VERSION OF THE REGULATIONS IS IN FORCE AT THIS
TIME. IF A RENEWAL OF THE PERMIT IS REQUIRED
ALMOST IMMEDIATELY DUE TO THE SWITCH-OVER
FROM ONE SET OF REGULATIONS TO ANOTHER, I
ALSO ASK TO BE NOTIFIED IMMEDIATELY SO THAT MY
REGISTRATION DOES NOT LAPSE IN ANY WAY.
THA K YO .
SUE ALBRECHT
k, JUNE 16, 2014
General Permit for Discharges of Stormwater from Construction Activities(VAR10)
Registration Statement
(Please Type or Print All Information)
1. Construction Activity Operator(The permit will be issued to this operator,and the Certification in Item#13 must be signed by the
appropriat�,,ge; salp,igJ Kd�y/th is erator�[s_ dee/the instruction*
Name: ��,,'(�Il�l ',�`my v��C7
Mailin Addre s:���! (
City: ((A _ State: Zip:'Z Z 0i Phone:421.4°. °*1 • . 1 ' c
Email address(if available): e t � �w '. r`
Indicate if DEQ may transmit the permit electron y: Yes X.. No
2. (Must be included for renewals of coverage only)Existing Permit Coverage#:
3. Location •f Construction Act ity:
Name: tl'1'G
or
Address: s_%u ►1► _ism, AA; I iell • IL`% i \ " .%iiii&la•
City: .c' Alt,..4:-.... tate: „' • Zip: o 0
County: ' f ••• 'i- ► • t 1(
DMS to the nearest 15 seconds: Latitude ill 7V u''• 44 Longitude-0.147.1.2
Location of all Offsite Support Activities to be Covered Under the Permit:
Name:
Address:
City: State: Zip:
County: -
If street address unavailable: Latitude Longitude
4. Status of Activity:Federal❑ State❑ Public❑ Private Check one only)
5. The Na ur of the Construction Activity(e.g.,commercial,industrial,residential,agricultural,oil and gas,etc.):
6. Name of the Receiving Water(s): I Cl � " �1r, ���"„m i ►
Hydrologic Unit Code(HUC): 02.0e71921
(Receiving waters identified as impaired on the 2008 305(b)/303(d)Water Quality Assessment Integrated Report or for which a
TMDL WLA has been established for stormwater discharges from a construction site shall be noted in an attached list.)
7. If the discharge is through a Municipal Separate Storm Sewer System(MS4),the name of the municipal operator of the
storm sewer:
8. Estimated Project Start Date(mm/dd/yyyy): `0(Of 14'.4r)_...„,
Estimated Project Completion Date(mm/dd/yyyy): 0 -01 jwt�
9. Total Land Area of Development(to the nearest one-tenth a re): 3�
Estimated Area to be Disturbed(to the nearest one-tenth acre): ' .
10. Is the area to be disturbed by the construction activity part of a larger common plan of development or sale?YesO Nor+
11. Are nutrient offsets intended to be acquired for this activity?Yes❑ No _'}Under considerationD
12. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General
Permit for Discharges of Stormwater from Construction Activities prior to submitting this Registration Statement. By
signing this Registration Statement the operator is certifying that the SWPPP has been prepared.
13. 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." �..-
Print Name: L % %.V5 .. t WV Title:</ i[.USICO
Signat `-- — -+�z
_ ��.����i�,iw--_..__ Date: toti/lei/y
Nirre (PIe- e sign in INK.The person signing this form must be associated with the operator identified in Item#1 above.)
Mail to: Department of Environmental Quality, Office of Stormwater Management, 10th Floor, P.O. Box 1105, Richmond,VA 23218
(DEQ 199-146)(08/13)
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 littg 1riri a erson a sowit/eisoerator.)
Name: .A ;LAI&
Contact: C,�/Vv r � �
Mailin• Addre -: r :Pa '
City: ,oirii �iTd � State:,ttZip!2( Phone' t'
Email address(if available): 0. kigivvi n i ` com
Indicate if DEQ may transmit general permit correspondence electronical . 71 N
j IN-
2. Existing General Permit Registration Number(for renewals only):
3. Name and Location Construction Activity:
Name:
Address(if available): vt��i b,.., rAlfi t_:m �dt�i tk.! C • :'!�� • .�1� •
City: ..r4 �. .ilI�4..0 ..: State: it Zip:T:240
County(if not located within • City): ,:•k 111[7,. t
.r. P
Latitude(decimal degrees): ► ii ' • ��'� Longitude(decimal degrees): Li j�
-- 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):
„r 4. Status of the Construction Activity(check only one): Federal ❑ State❑ Public❑ Private
5. NIre of the Construction Activity(e.g.,commercial,industrial,residential,agricultural,oil and gas,etc.):
til
6. Namethe -ecei ing ater( and Hydro gic Unit Code(HUC):
Name:-2)4 1 .' r Name:
HUC: OVO is SP ' 1 t HUC:
7. If the discharge is through a Municipal Separate Storm Sewer System(MS4),the name of the MS4 operator:
8. Estimated Project Start aid /m a ate: (0 �O
Start Date(mm/dd/yyyy): 10 0( Completion D to(mm/dd/yyyy):
9. Total Land Area of Development(to the nearest one-hundredth acre): y
Estimated Area to be Disturbed(to the nearest one-hundredth acre): .i�0 -
10. Is the area to be disturbed part of a larger common plan of development or sale? Yes❑ No7g.
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 Activities prior 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 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.” ....�
Printed Nam • V A. L (d. wr- Title: / iC,v$rGC
Signature: - Date: (p// 61/1y
( ease sign in INK. This Certification must be signed by the appropriate person associated with the operator identified in
Item#1.)
01/2014 Page 1 of 1
DEPARTMENT OF ENVIRONMENTAL QUALITY
CONSTRUCTION ACTIVITY OPERATOR PERMIT FEE FORM
(Please Type or Print All Information)'
,
Instructions: Applicants for a Construction Activity Individual Permit are required to pay permit application fees.
Fees are also required for registration for coverage under a Construction Activity General Permit. Fees must be
paid when applications for state permit issuance or modification are submitted. Applications will be considered
incomplete if the proper fee is not paid and will not be processed until the fee is received.
The fee schedule for state permits is included with this form. Fees for state permit issuance, reissuance,
modification, maintenance, and reinspection are included. Once you have determined the fee for the type of
application you are submitting, complete this form. The original copy of the form and your check or money order
payable to"Treasurer of Virginia"should be mailed to:
Department of Environmental Quality
Receipts Control
P.O. Box 1104
Richmond,VA 23218
A copy of this form and a copy of your check or money order should accompany the permit application (or
registration statement). You should retain a copy for your records.
Construction Activity 0 erator: U.v
Name: –N1 \1,I SF.8: 28t{a 41$.goLZ
Mailing Address: cc 117AINC1140G"
City: l.140it1U ;1T)`11J'v State: kik Zip: Z.i4c I
Phone: i'V/A)t-'• .G.1/1 • 24IK
Name and Location Construction�� � Activity: t-� ` ,(�Yy /+Name: AtftrItW— �V 1p1� 1 ! 5ittMikn l9 .— 2711
City: C UO State: h r Zip:2.0-40 I
County: AtSitA,MtW' .,
Type of State Permit: ❑ Construction Activity Individual Permit Mconstruction Activity General Permit
(from Fee Schedule)
Type of Action: -New Issuance ❑ Reissuance ❑ Modification
0 Maintenance ❑ R inspection
Amount of Fee Submitted (from Fee Schedule): 4(9°---""
•
Existing Permit Number(if applicable):
FOR DEQ USE ONLY
Date:
DC#:
(DEQ 199-213)(08/13)
44.011111
d3 `�
c ANVINCE LAND TRUST 5169
: .SUE A ALBRECHT-TRUSTEE 68-54/514 20407
255FIPSWICH PLACE 1010138187509
CHARLOTTESVILLE VA 22901 1' 1i
Date
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DEPARTMENT OF ENVIRONMENTAL QUALITY .
CONSTRUCTION ACTIVITY OPERATOR PERMIT FEE FORM
(Please Type or Print All Information).
Instructions: Applicants for a Construction Activity Individual Permit are required to pay permit application fees. Fees are
also required for registration for coverage under a Construction Activity General Permit. Fees must be paid when
applications for state permit issuance, reissuance, modification or transfer are submitted. Applications will be considered
incomplete if the proper fee is not paid and will not be processed until the fee is received.
The fee schedule for state permits is included with this form. Fees for state permit issuance, reissuance, maintenance,
modification and transfer are included. Once you have determined the fee for the type of application you are submitting,
complete this form. The original copy of the form and your check or money order•payable to "Treasurer of Virginia"
should be mailed to:
Department of Environmental Quality
Receipts Control
P.O..Box 1104
Richmond,VA 23218
A copy of this form and a copy of your check or money order should accompany the permit application (or registration
statement). You should retain a copy for your records.
•
Construction Activity Operator: t
Name: . V1� 4c4 Ur i IT2'YM1 ili
Contact: 1—
,. t�, �
*ire Mailing Address:� ZA �/ [790(144
n /�
City: \ , 4;. )1k,t/ State: WV Zip: 2401Phone:444•5 .1 'ZA�.�J
Email address(if available): .t @ 8661816YINAircil .COM
Name and Location of the Construction> Activity:
Name:— �T�iT fi •
City: l (tJIJC> State: \fiWk" Zip: 2'14e2 I
County: mak
Type of State Permit: ❑ Construction Activity Individual Permit ,(Construction Activity General Permit
(from Fee Schedule)
Type of Action: XiNew Issuance ❑ Reissuance ❑ Maintenance
❑ Modification ❑Transfer
Amount of Fee Submitted (from Fee Schedule): v/2 •
Existing General Permit Registration Number(if applicable): 1-1:401 147
FOR DEQ USE ONLY
fir►' Date: DC#:
01/2014 Page 1 of 1
Nkire
ANVINCE LAND TRUST 5170
SUE A ALBRECHT-TRUSTEE 68-54/514 2040
255 IPSWICH PLACE C/Il j� 1010138187509
CHARLOTTESVILLE,VA 22901 /
Date
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AL 1 ' ECHT PLACE
Albemarle County, Virginia
Supplement to:
VSMP General Permit for Discharges of Stormwater
from Construction Activities - Registration Statement
Off-Site Activities
There are no land disturbing activities prescribed beyond the limits of work. The limits
of work extend just beyond the property limits exclusively for the work required to
connect to adjacent infrastructure.
Permanent BMP's
There is a permanent BMP in the form of a permanent bio-retention pond proposed
on this project.
Site Location
The subject property is located behind what is now referred to as Twentyninth slaw (formerly Shopper's World Shopping Center, on the west side of Route 29 north of
Charlottesville. Access to the site is from Berkmar Drive and through the shopping
center A vicinity map is attached on the next page.
VICINITY MAP
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ADDENDA
1. AREAS OF FINAL STABILIZATION
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4. EROSION AND SEDIMENT CONTROL NARRATIVE
EROSION & SEDIMENT CONTROL NA RATIVE
Albrecht Place
Albemarle County, Virginia
April 12, 2013
Revised:
November 15, 2013
February 10, 2014
Prepared by:
TERRA CONCEPTS, PC.
2046 Rock Quarry Road
Louisa, Virginia 23093
(434) 5313600
ft•ie
Project Description
Skis?. The purpose of this application is to permit commercial development of a previously disturbed
property that has grown up in volunteer deciduous trees over the past thirty-five years. There is
a pending application for clearing and grubbing of a portion of this site that may be approved
prior to review and approval of this application. The plan previously submitted is included in this
plan submittal package. Implementation of this plan is intended to preclude sediment from
entering adjacent stormwater conveyance systems via runoff and adjacent properties and
streets by way of vehicular traffic.
The property is zoned PDSC, Planned Development Shopping Center, and a Preliminary Site
Development Plan has been approved for this property's development. This application is to
accompany the final site development plan documents submitted to Albemarle County on this
same date.
Existing Site Conditions
The 3-acre site lies just north of(behind)the Stein Mart located in the former Shopper's World
shopping center. The land was part of the original shopping center parcel, prior to a subdivision
of the tract into numerous commercial lots. Each parcel has easements across the others to
provide for access, infrastructure and utility service. The first phase of the shopping center was
developed in the mid-1970's and the subject property was used as a borrow site for soil needed
to level out other areas of the development closer to Route 29.
A steep slope exists along portions of the far northern limits of the subject parcel; evidence of
the excavation and soil removal that took place decades ago. A portion of this slope adjacent to
the property boundary supports semi-mature trees and has been set aside as a 20'-wide buffer
between the subject site and the terminus of a residential subdivision just beyond the northern
boundary line. Vegetation on the steep slopes will not be removed at this time in order to
maintain the integrity of the slope until such time as the final site plan documents are approved
and the retaining wall construction is ready to commence.
A limited analysis of the site's soils was professionally rendered in 1996. In that study it was
found that questionable soils may exist on the east(Berkmar Drive) side of the property. If poor
soils are encountered during the future grading process, the Developer will want to export this
material and utilize acceptable on-site soils as replacement. This effort would constitute a
different level of activity on site and a more robust Erosion & Sediment Control program. For this
reason, and the fact that the soils residing on the steep slopes would be subject to severe
erosion, mass grading of the site is not being proposed at this time.
Adjacent Property
The property is bound on the north by the Berkeley subdivision, to the east by three commercial
properties fronting Berkmar Drive, two of which are owned by the Applicant, to the south by the
former Shopper's World shopping center and to the west by several single-family residential
parcels that front on Dominion Drive.
Across the rear limits of the Dominion Drive residential lots resides a sizeable manmade
stormwater conveyance channel constructed as a regional facility and underwritten by
Albemarle County. Portions of the subject site currently drain to this swale and site plans call for
the contributions of runoff to continue once stormwater management facilities are installed and
.•► the post-development site stabilized.
2
Sore. The commercial properties fronting Berkmar Drive have a large stormwater pipe residing on
them, running parallel and just inside their rear property boundaries. A former creek was
covered over many years ago and this system now conveys both the small amount of base flow
as well as the rain event runoff.
The adjacent portion of Berkeley subdivision to the north is served by Williamsburg Road; a
long, straight public street that terminates in a cul-de-sac twenty or so feet from the northern
boundary line. Runoff from the lots goes to the east and west, away from the subject property.
However, some street runoff likely escapes catchment and enters the subject site mid-point
along its northern boundary and is immediately directed east, parallel to the boundary line within
a manmade swale that leads to the above-mentioned Berkmar creek/ pipe system.
The shopping center property is, for all intents and purposes, paved to the property line it shares
with the subject site. Roughly 40' of pavement resides between the property limits and the rear
of the buildings. This is the service area of the development. The pavement has been graded
such that a linear swale directs rainwater and roof runoff down the middle of the paved strip
toward storm sewerage improvements located in the northwest quadrant of the shopping center.
Off-Site Areas
Several small areas immediately off-site are proposed to be disturbed. Small sections of paving
will cross over property limits in an effort to tie into existing sidewalks and travelways on
adjacent properties. To the southeast, an existing drainage inlet will serve as a tie-in point for a
portion of the proposed storm sewerage on the subject site. At the southwest corner an outfall
Sore pipe from a proposed bio-dentention basin will impact a neighboring property. This same
property will be temporarily impacted while sanitary sewerage and water supply lines are
brought to the subject site. Diligence will be necessary to ensure that the paved accessways on
the shopping center property are kept clean and accessible and that all existing storm sewerage
systems are protected from sediment. Waste materials associated with the site's development
shall be disposed of in accordance with local regulations.
Soils
According to the soils survey of Albemarle County, the soil types on the subject site include 27C
— Elioak loam on 2 to 7 percent slopes, 88— Udorthents loamy and 91 — Urban Land.
Soils of the 27C - Elioak series are deep, strongly sloping and well-drained with moderate
permeability. Runoff is typically rapid resulting in a severe erosion risk.
Soils classified as 88— Udorthents are typically found in areas where earthwork activity has
profoundly altered the native soil strata. Both cutting and filling of areas usually occur in a single
area and steep cut and fill banks can reside adjacent to exceedingly flat areas. Exposed
bedrock is often evident. Permeability ranges from moderately rapid to slow and standing water
can occur. Runoff can be rapid. Therefore, erosion potential is moderate to severe. No subclass
assigned.
Soils falling under the category of 91 - Urban Land typically consist of areas where more than
80% of the surface is covered by buildings or paving of one form or another. Slopes usually
range between 0 and 10%. No subclass assigned.
err
3
Critical Erosion Areas
The slopes on the northernmost limits of the disturbed area are classified as critical. Clearing,
grubbing and open cuts will be made within a well-defined portion of these slopes to enable
installation of a retaining wall. Wall construction will be modular and, therefore, able to be
completed in a brief timeframe. Once backfilled, the hazard level for erosion will be minimal. The
only ongoing critical area will be the point where access to the site is focused. Daily
maintenance of this area will be important as it is a key travelway for trucks serving the existing
shopping center.
Erosion &Sediment Control Measures
Unless otherwise indicated, all erosion and sediment control practices will be constructed and
maintained according to minimum standards and specifications of the Virginia Erosion and
Sediment Control Handbook (1992).
Safety Fence - E&S Std. & Spec. 3.01
Safety fencing to be placed along limits of work parallel to northern boundary to prevent people
from walking toward dangerous grades and work area prior to installation of permanent fencing.
Temporary Construction Entrance- E&S Std. & Spec. 3.02
Temporary Construction Entrance is proposed to define the entry and exit point to the
construction site and to provide the platform to clean construction vehicles before leaving the
site. A Temporary Construction Entrance shall be installed where indicated.
,, Silt Fence with Wire Support- E&S Std. & Spec. 3.05-1
ir Silt Fence is proposed to capture the sediments in the sheet flow. Silt Fence with wire support
shall be installed in a sequenced manner as shown on the plan.
Storm Drain Inlet Protection and Culvert Inlet Protection - E&S Stds. & Specs. 3.07 & 3.08
Drop inlet protection is proposed to prevent sediment from entering storm drainage systems
prior to permanent stabilization of disturbed areas. Inlet protection shall be installed in locations
as shown on the plan.
Temporary Diversion Dike - E&S Std. & Spec. 3.09
A ridge of compacted soil constructed at the top or base of a sloping disturbed area which
diverts off-site runoff away from unprotected slopes and to a stabilized outlet, or to divert
sediment-laden runoff to a sediment trapping structure.
Temporary Sediment Basin— E&S Std. & Spec. 3.14
A Temporary Sediment Basin shall be installed where indicated on the plans. See attached
calculations for sizing and the table on the plans for dimension specifications. It will eventually
be converted to a permanent bio-detention facility as the project winds down.
Outlet Protection— E&S Std. & Spec. 3.18
Outlet Protection shall be installed where proposed culverts or pipes outfall onto grade as
indicated on the plans.
Riprap— E&S Std. & Spec. 3.19
Riprap shall be installed in an improved drainage ditch running the entire length of property
Stir along the eastern boundary as indicated on the plans.
4
Topsoilinq— E&S Std. & Spec. 3.30
Topsoiling shall be installed wherever landscaping, sod or permanent seeding is proposed as
indicated on the plans.
Temporary Seeding — E&S Std. & Spec. 3.31
In Stage 1 of the site's development temporary seeding is proposed as indicated on the plans to
establish cover over cleared and graded areas of the site that may lay dormant while collateral
construction activities, such as retaining wall construction, take place.
Permanent Seeding: E&S Std. & Spec. 3.32
All areas temporary disturbed by construction and not scheduled to be placed in building,
parking lot, paving, landscape mulch or sod shall be stabilized with permanent seeding
immediately following establishment of final grades. Unless otherwise specified, permanent
seeding will be done with a seed mix approved by the Owner prior to application in accordance
to E&S Std. and Spec. 3.31 of the 1992 Virginia Erosion and Sediment Control Handbook.
Sodding — E&S Std. & Spec. 3.33
Sodding shall be installed where indicated on the plans.
Mulching — E&S Std. & Spec. 3.35
Mulching shall be installed in limited areas where landscaping occurs or where maintenance of
proposed grass stands would be preclusive. See plans.
Soil Stabilization Blankets/Mattinq - E&S Std. & Spec. 3.36
The EC-2 matting shall be placed where indicated on Erosion & Sediment Control Plan.
41''" Dust Control — E&S Std. & Spec. 3.39
Dust Control will be important when natural weather conditions, combined with site activity, tend
to generate airborne particulates.
5
Management Strategies
1. Construction will be sequenced so that grading operations can begin and end as quickly as
possible.
2. Areas which are outside the construction limits and not to be disturbed shall be clearly
marked.
3. Tree protection shall be installed before any grading activities commence and before
equipment and material storage areas are established.
4. Sediment trapping measures shall be installed as a first step in grading and will be seeded
and mulched immediately following installation.
5. Matting and seeding, whether temporary or permanent, will follow immediately after grading.
6. The site contractor shall be responsible for the installation and maintenance of all erosion
and sediment control practices.
7. After achieving adequate stabilization, the temporary erosion and sediment controls will be
cleaned up and removed and final grades established according to the grading plan for the
project.
Stormwater Management
The pre-development site is a vacant parcel surrounded by moderately dense commercial and
residential development. The surrounding development was constructed over 30 years ago so
the parcel has become primarily vegetated with volunteer tree species. The terrain of the parcel
is moderately sloping for most of the site with steep slopes around its perimeter. The parcel's
soils and topography have been altered from its original state at some point in the past. The pre-
development site has within it two small sub-watersheds. The Pre-Development East watershed
is 1.39 acres. This watershed drains to an existing 48" storm pipe system along the eastern
property line adjacent commercial development. The Pre-Development West watershed is 1.85
acres. This watershed drains to an existing large channel which runs parallel to the western
property boundary behind adjacent residential development. The pre-development watershed
maps, runoff calculations, and rates are shown on the WPO plan sheets and in the appendix of
the E&S Narrative.
The stormwater management plan for the post-development site is to modify the grades of the
site, shifting a majority of the Pre-Development East watershed into the Post-Development West
watershed and constructing a large bio-retention basin with internal water storage to manage
stormwater runoff quantity and quality to the pre-development rates calculated for the Pre-
Development West watershed. Additionally, permeable interlocking concrete pavers will be
utilized in the parking areas of this watershed to reduce the amount of impervious area on the
post-development site. Since a majority of the site will drain to the proposed bio-retention basin
in the Post-Development West watershed, the post-development rates for the Post-
Development East watershed are reduced below the pre-development runoff rates. Permeable
interlocking concrete pavers are proposed in the parking areas of this watershed to address
water quality concerns. The post-development watershed maps, runoff calculations, rates, and
stormwater modeling reports are shown on the WPO plan sheets and in the appendix of the
E&S Narrative.
The drainage infrastructure surrounding this site is quite robust and it is our opinion that the
proposed stormwater management plan addresses any downstream channel concerns for this
development.
''4460e
6
Sequence of Construction
1. BEGIN STAGE 1 OF THE EROSION AND SEDIMENT CONTROL PLAN BY CLEARLY
MARKING ALL OF LIMITS OF WORK AND "NO DISTURB" BUFFERS ON NORTH AND
WEST SIDE OF PROPERTY.
2. INSTALL CONSTRUCTION ENTRANCE, ALL PERIMETER SILT FENCE AND INSTALL
INLET PROTECTION AROUND ALL EXISTING INLETS.
3. SEDIMENT TRAPS AND ASSOCIATED DIVERSION DIKES. MATT DIVERSION DIKE
SLOPES ADJACENT TO PAVED AREAS IF INSTRUCTED BY EROSION CONTROL
INSPECTOR.
4. COMMENCE CLEARING AND GRUBBING ACTIVITY. DISPOSE OF DEBRIS
APPROPRIATELY. APPLY TEMPORARY SEEDING IF MASS GRADING DOES NOT
BEGIN WITHIN 30 DAYS.
5. INSTALL RETAINING WALL A.
6. CONTINUE SITE MASS GRADING TO ESTABLISH BUILDING PAD AND AS MUCH OF
THE PARKING LOT PAD AS POSSIBLE WHILE MAINTAINING WATERSHEDS TO BOTH
SEDIMENT TRAPS.
7. INSTALL PROPOSED WATER, SEWER AND OTHER UNDERGROUND UTILITIES
AND/OR CONDUITS. MARK CLEARLY.
8. INSTALL BASE GRAVEL FOR BUILDING PAD AND BASE GRAVEL, CONCRETE
CURBING AND STORM DRAINS FOR PARKING LOT AREAS, REMOVING SEDIMENT
TRAP#1 WHEN APPROVED BY THE EROSION CONTROL INSPECTOR. — PROCEED
TO STAGE 2 OF THE EROSION AND SEDIMENT CONTROL PLAN.
9. BEGIN STAGE 2 OF THE SEDIMENT AND EROSION CONTROL PLAN BY
CONSTRUCTING RETAINING WALLS B & C. COMPLETE SITE FILL AND WALL
BACKFILL
10. INSTALL TEMPORARY SAFETY FENCING.
11. INSTALL ANY REMAINING STORM SEWERAGE, INCLUDING PIPES RELATED TO
FUTURE POROUS PAVING INSTALLATIONS. POUR CONCRETE DITCH SYSTEM
BEHIND TOP OF NORTH WALL AND CONCRETE CHANNEL DRAIN ALONG SOUTH
PROPERTY LINE. ADD INLET PROTECTION, OUTLET PROTECTION AND MATTING AS
SHOWN.
12. REMOVE TEMPORARY CONSTRUCTION ENTRANCE AND ASSOCIATED
IMPROVEMENTS. INSTALL REMAINING CURBING ALONG PARKING LOT PERIMETER
AND INTERIOR ISLANDS, INCLUDING SMALL CONCRETE SWALES BETWEEN
BROKEN ISLANDS.
13. COMPLETE STONE BASE FOR ALL PARKING LOT AND TRAVELWAYS.
`r
7
14. AT APPROPRIATE TIME DURING BUILDING CONSTRUCTION REMOVE ALL
COMPROMISED BASE STONE AND STONE FROM AREAS WHERE POROUS PAVING
IS SPECIFIED. INSTALL NEW STONE ACCORDING TO DETAILS IN THESE AREAS.
INSTALL CURB EDGING WHERE ASPHALT PAVING WILL INTERFACE WITH POROUS
PAVING INSTALLATIONS.
15. PLACE ASPHALT BASE COURSE AND POROUS PAVING WHERE SHOWN. REMOVE
INLET PROTECTION SITE-WIDE.
16. CONSTRUCT ALL SIDEWALKS, STAIRS, CHEEK WALLS, TERRACES AND
ASSOCIATED WALLS, RAMPS AND HANDRAILS THAT ARE ADJACENT TO THE
BUILDING ON THE WEST, NORTH AND EAST SIDES OF THE BUILDING. INSTALL
CONCRETE DUMPSTER AND UTILITY PADS ALONG SOUTH SIDE OF BUILDING.
17. REMOVE SAFETY FENCE AND INSTALL GUARDRAIL, SCREEN FENCING, LIGHTING,
SIGNING, MAILBOXES AS WELL AS SCREEN WALL AT SOUTHEAST CORNER OF
BUILDING.
18. CLEAN OUT AND CONVERT SEDIMENT BASIN #2 TO BIO-DETENTION BASIN
(INSTALL MEDIA MIX). REMOVE ANY OLDER E&S MEASURES AS DIRECTED AND
PERMITTED BY THE EROSION CONTROL INSPECTOR. PERFORM FINAL TOPSOILING
AND INSTALL LANDSCAPING, SEEDING, SOD AND MULCH AS SPECIFIED.
19. PLACE FINAL LIFT OF ASPHALT PAVING WHEN HEAVY EQUIPMENT OPERATION
AND MATERIAL STAGING ON SITE ARE COMPLETE. ADD PAINT-STRIPING AND
SIGNING.
8
Maintenance
In general, all erosion and sediment control measures will be checked daily and after each
significant rainfall. The following items will be checked in particular:
1. The inlet protection will be checked each morning for sediment and debris. All locations are
to be kept tight, clean and fully operational.
2. Each evening the paved surface beyond the construction entrance shall be washed down or
swept clean.
3. The construction entrance will be checked regularly. If the stone becomes clogged by mud
or sediment it shall be removed and cleaned or replaced.
4. The temporary diversion dikes and sediment trap will be checked regularly for deterioration
and sediment deposition and maintained if necessary.
5. Seeded areas will be checked regularly to ensure that a good stand is established. Areas
shall be retreated if so determined by erosion Inspector in accordance with the Virginia
Erosion & Sediment Control Handbook.
The contractor shall be responsible for the installation and maintenance of all erosion and
sediment control practices and restoration of any damaged areas during construction and for
any warranty period prior to transfer of responsibility to Owner.
, Vegetative Practices
Permanent seeding, sodding and considerable landscape installations are part of the
development proposal.
Permanent Stabilization
The site is to be permanently stabilized early in the construction process.
Stormwater Considerations
Stormwater management is important on this project and a series of measures are proposed, all
of which are reflected on the plan set.
State Minimum Standards
An erosion and sediment control program adopted by a district or locality must be consistent
with the following criteria, techniques and methods:
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. 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 30 days. Permanent stabilization shall be applied to areas that are
to be left dormant for more than one year.
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
9
protection and permanent stabilization of all soil stockpiles on site as well as borrow areas
Somme and soil intentionally transported from the project site.
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 twenty-five 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.
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 of
causeways and cofferdams. Earthen fill may be used for these structures if armored by
nonerodible cover materials.
10
13. When a live watercourse must be crossed by construction vehicles more than twice in any
Sire 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. 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 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
Sir 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 local program 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 following standards and criteria:
a. Concentrated stormwater runoff leaving a development site shall be discharged directly
into an adequate natural or man-made receiving channel, pipe or storm sewer system.
For those sites where runoff is discharged into a pipe or pipe system, downstream
stability analyses at the outfall of the pipe or pipe system shall be performed.
b. Adequacy of all channels and pipes shall be verified in the following manner:
(1) The applicant shall demonstrate that the total drainage area to the point of analysis
within the channel is one hundred times greater than the contributing drainage area
of the project in question; or
'` ✓ (2)
11
a. Natural channels shall be analyzed by the use of a two-year storm to verify that
,, stormwater will not overtop channel banks nor cause erosion of channel bed or
banks; and
b. All previously constructed man-made channels shall be analyzed by the use of a
ten-year storm to verify that stormwater will not overtop its banks and by the use
of a two-year storm to demonstrate that stormwater will not cause erosion of
channel bed or banks; and
c. Pipes and storm sewer systems shall be analyzed by the use of a ten-year storm
to verify that stormwater will be contained within the pipe or system.
c. If existing natural receiving channels or previously constructed man-made channels or
pipes are not adequate, the applicant shall:
(1) Improve the channel to a condition where a ten-year storm will not overtop the banks
and a two-year storm will not cause erosion to the channel bed or banks; or
(2) Improve the pipe or pipe system to a condition where the ten-year storm is contained
within the appurtenances; or
(3) Develop a site design that will not cause the pre-development peak runoff rate from a
two-year storm to increase when runoff outfalls into a natural channel or will not
cause the pre-development peak runoff rate from a ten-year storm to increase when
runoff outfalls into a man-made channel; or
(4) Provide a combination of channel improvement, stormwater detention or other
measures which is satisfactory to the plan-approving authority to prevent
downstream erosion.
fire d. The applicant shall provide evidence of permission to make the improvements.
e. All hydrologic analyses shall be based on the existing watershed characteristics and the
ultimate development of the subject project.
f. If the applicant chooses an option that includes stormwater detention he shall obtain
approval from the locality of a plan for maintenance of the detention facilities. The plan
shall set forth the maintenance requirements of the facility and the person responsible
for performing the maintenance.
g. Outfall from a detention facility shall be discharged to a receiving channel, and energy
dissipators shall be placed at the outfall of all detention facilities as necessary to provide
a stabilized transition from the facility to the receiving channel.
h. All on-site channels must be verified to be adequate.
i. Increased volumes of sheet flows that may cause erosion or sedimentation on adjacent
property shall be diverted to a stable outlet, adequate channel, pipe or pipe system, or to
a detention facility.
j. In applying these stormwater runoff criteria, individual lots or parcels in a residential,
commercial or industrial development shall not be considered to be separate
development projects. Instead, the development, as a whole, shall be considered to be a
single development project. Hydrologic parameters that reflect the ultimate development
fir✓ condition shall be used in all engineering calculations.
12
fir. k. All measures used to protect properties and waterways shall be employed in a manner
which minimizes impacts on the physical, chemical and biological integrity of rivers,
streams and other waters of the state.
13
Certified Responsible Land Disturber(RLD) Statement
%sr A certified RLD is required during all stages of construction, from the initial land disturbance
through final stabilization. The name of the project RLD must be provided to the County
before any land disturbance may begin. Notify the office in a timely manner if the RLD
changes during the course of the project.
444k..
14
Appendix
5. STORMWATER MANAGEMENT CALCULATIONS
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6.> ALBEMARLE COUNTY,VIRGINIA
STORM MANAGEMENT PLAN , - n
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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
Sheets 3 and 4 of the WPO/EROSION & SEDIMENT CONTROL PLAN shall guide the installation,
implementation,monitoring and maintenance of the pollution prevention plan. These sheets are attached for
reference.
Ay.or
Issued— 10/2014 Stormwater Pollution Prevention Plan(SWPPP)Albemarle County
B. Sources of Pollutants,locations, and prevention practices
Pollutant,or pollutant prevention Practices,
Location on site
Generating Activity Control Measures
Spill Prevention and Response
Slime
The contractor shall maintain a supply of emergency response/clean-up (HAZMAT) supplies on site-see
below.
2. Fueling and Maintenance of Equipment or Vehicles
Fueling of vehicles and equipment shall take place adjacent to the sediment trap just beyond the
construction entrance. No bulk storage of fuels or similar liquids shall be maintained on site. Fuel shall be
imported as needed by separate vehicle.
3. Diesel Fuel, Oil, Hydraulic Fluids, Other Petroleum Products, and Other Chemicals
No fuel, oil, hydraulic fluids or other petroleum products shall be stored on-site.They shall be brought to
the site on an as-needed basis and applied as required.Spills shall be handled according to HAZMAT
protocol by the contractor. HAZMAT supplies appropriate to this category of products shall be kept on
site.
4. Hazardous or Toxic Waste
Srunused solvents and other potentially hazardous or toxic waste shall be containerized and taken to a
proper facility that accepts such material.Spills shall be handled according to HAZMAT protocol by the
contractor. HAZMAT supplies appropriate to this category of products shall be kept on site.
C. Sources of Pollutants, continued. Common activities and minimum control and prevention
Practices
Pollutant,or Pollutant Prevention Practices,
Location on site
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-
proof container or leak-proof settling
basin that is designed so that no overflows
Concrete washout Current location and detail shown can occur.Contractor also has the
and cement waste on plan authority to require all applicators,
containers or related equipment to be
washed/cleaned at the applicators facility.
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,
storage and staging have been designated
adjacent to a sediment trap that is near the
Material delivery and storage Designated area shown on plan construction entrance.Use this area as
long as possible.It is away from
waterways and drainage paths
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Follow manufacturer's instructions.
Contractor to maintain on site
Material used during building process Building areas MSDS's for all construction
materials.
Waste collection is to be established
Srr✓ adjacent to or as part of the staging area
and material stockpile zone.This area will
not receive a substantial amount of runoff
Current designated container areas from upland areas and does not drain
Solid waste disposal on plan directly to a waterway.Containers have
lids covered before periods of rain,or are
in a covered area.Scheduled collection to
prevent overfilling.MATERIALS NOT
TO BE BURIED ON-SITE
Pollutant,or Pollutant Prevention Practices,
Generating Activity Location on site
nControl Measures
Convenient and well-maintained
portable sanitary facilities will be
provided within the staging area or
adjacent to any construction trailer,and
Sanitary waste Current locations shown on plan located away from waterways or inlets.
Portable sanitary facilities shall be
secured to the ground to prevent
displacement and shall be regularly
maintained.
Apply fertilizers in accordance with
manufacturer's recommendations and
not during rainfall events.Because of the
L,'--Iscaping operations Landscape areas shown on plan hidden nature of the site and the
. 161110 difficulty in securing it from trespass,no
landscape chemicals or fertilizers shall
be stored on site.
.d
Wash water shall be treated in a sediment
Wash area shall be at the inboard end of trap adjacent to the construction entrance.
the construction entrance and water Minimise the discharge of pollutants
Wash Watersstorage for wash application developed from equipment and vehicle washing
Sire
or maintained on site by the contractor.
Vehicles and equipment shall be
washed at the inboard end of the
Designated areas and details shown on construction entrance so that the
plan. diversion dike can direct wash water to
Vehicle and equipment washing the adjacent sediment trap.
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.)
D. Non-stormwater discharges
Discharge
Pollutants or Pollutant Location on Site
Constituents
Issued— 10/2014 Stormwater Pollution Prevention Plan(SWPPP)Albemarle County
E. Persons responsible for pollution prevention practices
The general contractor shall be responsible for installation, implementation,monitoring and maintenance
of the pollution prevention practices. The landowner may designate an agent to oversee construction on
site. The contractor shall report any discharges or leaks tolnot only the local authorities,but also the
landowner and their agent.
Sur
F. Pollution Prevention Awareness
The general contractor shall assign to the project a person who is trained in the installation,
implementation,monitoring and maintenance of pollution prevention practices.
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Issued— 10/2014 Stonnwater Pollution Prevention Plan(SWPPP)Albemarle County