HomeMy WebLinkAboutWPO201300007 Plan - Approved 2013-01-25 th tre et Fill
Erosion and Sediment Control Plan
Tax Map and Parcel 07600-00-054IA
APPROVED
by theAlbemarle County
Community y Development Department
Fit
FILE COPY
This copy of the approved plan is
reserved for the official files of
Albemarle County. Please do not
remove this plan from the file.
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Narrative
Project Description
An area of approximately 2.5 acres will be utilized as a fill site for a future project. The area will hold 40-
44,000 yards of soil (approximately 110,000 yds. will be needed for anticipated site). Soil will be
imported from several local project sites, including Oakhurst, Meadowbrook Parkway and/or
Fontana. Only good soil will be imported.
EXISTING SITE CONDITIONS
The site consist of trees and vines on sloped terrain. Many of the trees in the area have sprouted from
damaged roots removed in 2005. Many of the trees are covered with vines and are dying as
evidenced by the dead limbs/branches and rot, as noted by a certified arborist.
ADJACENT AREAS
Most of the adjacent area is made up of the same trees and vines and includes some healthy trees.
These areas will not be disturbed.
OFF-SITE AREA
Fill material is being imported from sites including Oakhurst, Fontana and the Meadowbrook Parkway,
and will only be brought to the site from other sites where adequate E&S measures have been
implemented and meet local, state and federal requirements known.
SOILS
According to the USDA SCS Soil Mapping, the project site lies on soil types: Elioak Loam-27B and Hazel
Loam-39D.
CRITICAL AREAS
The limits of disturbance area do not include any area deemed"critical slope"according to the Albemarle
County GIS.
EROSION AND SEDIMENT CONTROL MEASURES
The area will include 450 LF of well-defined diversion ditch or dike(seeded and strawed)to the west from
5th street to trap, 600 feet of silt fence to the east/north east from the north side of the demoed
house to the trap.A silt trap is located where the silt fence and diversion ditch/dike meet to the
north. The silt trap is designed for a 2.5 acre area. The rock weir is to be constructed using
concrete foundation of demoed house broken into Class 1 size pieces to be used along with#3
VDOT stone for filter with fabric underlayment. The entrance to the area includes over 70 feet of
existing pavement and an additional 30 feet of paving with#3 stone and fabric added to one side
for wide truck traffic.
PERMANENT STABILIZATION
See General Notes for Erosion and Sediment Control Plans
STORMWATER RUNOFF CONSIDERATIONS
Contractor to monitor stormwater channels and any potential for future flooding and potential downstream
channel degradation.
CALCULATIONS
-Per sketch
Note:
• Limts of disturabance-backside of erosion control measures
• Stockpile slope no greater than 2:1
Sequence of construction
• Contractor/owner shall provide and post bond estimate to County of
Albemarle and schedule preconstruction meeting.
• Contractor shall install all perimeter controls, construction entrance,
silt fence, rliversinn ditch and silt trap. Trees within limits of
construction that are to remain shall have proper tree protection as
part of E&S measures.
• With perimeter controls installed, stabilized, and functioning,
contractor can begin to stockpile. Contractor shall stabilize per
temporary seeding requirements.
• Once the site is deemed stabilized by the county of Albemarle, the
temporary erosion and sediment controls devices can be removed
and disturbed areas permanently stabilized.
General Notes for Erosion and Sediment Control Plans
1.The plan approving authority must be notified one week prior to the pre-construction conference,
one week prior to the commencement of land disturbing activity, and one week prior to the final
inspection.
2.All erosion and sediment control measures will be constructed and maintained according to minimum
standards and specifications of the Virginia Erosion and Sediment Control Handbook and Virginia
Regulations VR 625-02-00 Erosion and Sediment Control Regulations.
3.All erosion and sediment control measures are to be placed prior to or as the first step in clearing.
4. A copy of the approved erosion and sediment control plan shall be maintained on the site at all times.
5. Prior to commencing land disturbing activities in areas other than indicated on these plans (including,
but not limited to,off-site borrow or waste areas),the contractor shall submit a supplementary erosion
control plan to the owner for review and approval by the plan approving authority.
6.The contractor is responsible for installation of any additional erosion control measures necessary to
prevent erosion and sedimentation as determined by the plan approving authority.
7.All disturbed areas are to drain to approved sediment control measures at all times during land
disturbing activities and during site development until final stabilization is achieved.
8. During dewatering operations,water will be pumped into an approved filtering device.
9.The contractor shall inspect all erosion control measures periodically and after each runoff-producing
rainfall event.Any necessary repairs or cleanup to maintain the effectiveness of the erosion control
devices shall be made immediately.
10.All fill material to be taken from an approved,designated borrow area.
11.All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only,
free of roots, stumps,wood, rubbish, and other debris.
12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section
5.1.28.
13.All inert materials shall be transported in compliance with section 13-301 of the Code of Albemarle.
14. Borrow, fill or waste activity involving industrial-type power equipment shall be limited to the hours
of 7:00am to 9:00pm.
15. Borrow, fill or waste activity shall be conducted in a safe manner than maintains lateral support,or
order to minimize any hazard to persons, physical damage to adjacent land and improvements, and
damage to any public street because o slides, sinking,or collapse.
16.The developer shall reserve the right to install, maintain, remove or convert to permanent
stormwater management facilities where applicable all erosion control measures required by this plan
regardless of the sale of any lot, unit, building or other portion of the property.
17.Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 lbs/acre,
and in the months of September to February to consist a 50/50 mix of Annual Ryegrass and Cereal
Winter Rye, or in March and April to consist of Annual Rye,or May through August to consist of German
Millet. Straw mulch is to be applied at 80Ibs/100sf.Alternatives are subject to approved by the County
erosion control inspector.
18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch.Agricultural
grade limestone shall be applied at 90Ibs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer
shall be applied at 1000Ibs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be
applied at 180Ibs/acre and consist of 95%Kentucky 31 or Tall Fescue and 0-5%Perennial Ryegrass or
Kentucky Bluegrass. Straw mulch is to be applied at 801bs/100sf.Alternatives are subject to approved by
the County erosion control inspector.
19. Maintenance:All measures are to be inspected weekly and after each rainfall.Any damage or
clogging to structural measures is to be repair immediately.Silt traps are to be cleaned when 50%of the
wet storage volume is filled with sediment.All seeded areas are to be reseeded when necessary to
achieve a good stand of grass.Silt fence and diversion dykes which are collecting sediment to half their
height must be cleaned and repaired immediately.
20.All temporary erosion and sediment control measures are to be removed within 30 days of final site
stabilization, when measures are no longer needed, subject to approval by the County erosion control
inspector.
21.This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval.
(Water Protection Ordinance section 17-204G.)
22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date
the land disturbing activity commenced. (Water Protection Ordinance section 17-207B)
1992 3.13
•
TEMPORARY SEDIMENT TRAP
1* VARIABLE I
ORIGINAL VARIABLE*
GROUND
ELEV. ::71'
t1/r01114k
r
1:‘,70 Iallpiedisie
ift 67 Cu. YD./ACRE s Iv
`'���~' L VARIABLE*
67 CU. YD./ACRE
ir,,lir
(EXCAVATED) 4.
MAX.
FILTER CLOTH ORIGINAL
GROUND
ELEV.
•SEE PLATE 3.13-1 COARSE AGGREGATE CLASS I RIPRAP
CROSS SECTION OF OUTLET
CLASS I RIPRAP
LENGTH (IN FEET) _
8 X DRAINAGE AREA
*J (IN AC.)
�= f` i
DIVERSION
DIKE\ _ � `� = � , -�e•
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COARSE AGGREGATE // \<..N_.-__- `'
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EXCAVATED
/ /r FILTER CLOTH / ��-••^�
•r
COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5
OUTLET (PERSPECTIVE VIEW)
Source: Va. DSWC Plate 3.13-2
III - 76
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1992 3.12
DIVERSIONS
10% SETTLEMENT
0.3' FREE BOARD- I
l- hI' u.,. I
I��I 10111 DESIGN FLOW mPTh _t11� 11JJ 1 —�= 'JO
°I I -XII=IIIIIIIh�IIIIII°- _
=1111 11111-11111 IIIII=
TYPICAL PARABOLIC DIVERSION
10% SETTLEMENT
0.3' FREE BOARD
1111111. DESIGN FLOW DEPTH L o I
°I
11111 11111= =-11711 = ='1 -�IIIf1''11111°i1l1I11_111111-111111 'IfIIlI 1111111
TYPICAL TRAPEZOIDAL DIVERSION
10% SETTLEMENT
0.3' FREE BOARDS
III II -IIIII DESIGN Ff w DEPTH _=�1WI
—111lII- = �
111111 11111=I I- =111
TYPICAL VEE-SHAPED DIVERSION
Source: Va. DSWC Plate 3.12-1
III - 67
1992 3.09
Height
The minimum allowable height measured from the upslope side of the dike is 18 inches(see
Plate 3.09-1).
TEMPORARY DI VF'RSION DIKE
Compacted Soil
18" min.
E Flow
ll t lilll- . I rI '1 Ilrlll—tllltl
=I = _ _ 111111 111111
F4.5' min. *I
Source: Va. DSWC Plate 3.09-1
Side Slopes
11/2:1 or flatter, along with a minimum base width of 4.5 feet (see Plate 3.09-1).
Grade
The channel behind the dike shall have a positive grade to a stabilized outlet. If the
channel slope is less than or equal to 2%, no stabilization is required. If the slope is greater
than 2%, the channel shall be stabilized in accordance with Std. & Spec. 3.17,
STORMWATER CONVEYANCE CHANNEL.
Outlet
1. The diverted runoff, if free of sediment, must be released through a stabilized outlet
or channel.
III - 54
vt6
Professional Tree Care Post Office Box 748
0 I Crozet, VA 22932
Telephone 434-823-4021
of CHARLOTTESVILLE Fax 434-823-1239
SS'
, Staunton:540-885-5566
�5— Waynesboro: 540-949-5566
July 24, 2012
Digs, Inc.
c/o Mac Vanderploeg
PO Box 31
Charlottesville VA 22902
Re: This letter is in reference to the project located just south of 64 at the 5th St exit.
Dear Mac:
There are several trees that should not be taken down. The majority of these trees are
located on the south end of the designated area close to 5th Street and in areas
parallel to 5th Street, approximately 400 ft. to the west.
For most of the site, it was my observation that the trees partially covered in vines are
dying. This was evident by the number of dead limbs/branches visible. Much damage
has already occurred to trees in the vined areas. This damage is also evidenced by rot
located at the base of the trees. These trees are not salvageable and, for safety
reasons, should be removed as these areas are approached.
It should be noted that the majority of the trees in this area were cut down in 2005 and
many of the trees in this area have sprouted from the roots systems damaged during
the first removal. These root systems are usually deficient and should be removed for
safety reasons. Care should be taken when removing these trees. This includes the
sycamore trees
,
-tip-7 .A:h/
Roger L. Bober
Certified Arborist MA-4044
Digslnc07242012
1992 3.02
STONE CONSTRUCTION ENTR AI NCE'
. ,I 70' MIN. 1E
A PAVEMENT
.--ice ,u ri - -,,•' ,1b.. ;.••..�.S`l •..::• 4.5 :.. ,�.! . • 5.
III l� 11—Ilfll=l�' :^i��,/w`.:' :^a-.r.Grr +',�y..,i.�rid:,�}-a.•r •�?i ':•
FILTER CLOTH 6" MIN A MOUNTABLE BERM
(OPTIONAL)
SIDE ELEVATION
EXISTING GROUND
70' MIN.
.,I1
B •a�'� 10' MIN.
WASHRACK c,•r{;1
(OPTIONAL) '�'�•1'
=11-eIIFII=ini1{'Vt{ 1 �Il�'r l►�t r' r'r
•11 ,.:r.•� .•oaiii�•�••rl�: {ri
11=;Ittr`' » 10 MIN.
11 il�a. 12' MIN.shy f iteSt.' EXISTING
II {I Wit{ 1111111DPWI
Of:n .74A: dil PAVEMENT
I1Vr�:!i: Quit:��il�i •Vii: .>rt;
1�C•r:
••`. •
VDOT #1 .1--\ POSITIVE DRAINAGE ':;I 10' MIN.
COURSE AGGREGATE I TO SEDIMENT •,1 _i___. •
B . TRAPPING DEVICE
S
• MUST EXTEND FULL WIDTH
OF INGRESS AND EGRESS
OPERATION PLAN VIEW ) -
AVE. um I► Ay ix 1
•
f-beficklay mod be&meS
12' MIN. /55VEi A,..i.-1.
—"— {r 114' *.elf �s�!♦
T7----MC I -- -J1.�A:�Ow 3' MIN.
i— �-.. 1 �..!!��i��-aw��!"_..�.I�t:.�r
FILTER CLOTH SECTION A—A
6'-7''
1111101121P si..,............,/,..,..,.,:ii:-:.:".:„...,.11-i.,:.. swum
- elillIP4
REINFORCED CONCRETE DRAIN SPACE
SECTION B-B
Source: Adapted from 1983 Maryland Standards for Soil Plate 3.02-1
Erosion and Sediment Control, and Va. DSWC
III - 9
Albemarle County
Engineering Review Reference Details
Page 3 of 4
Paved construction entrance for erosion control plans
CONSTTUCTION
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PROFILE
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TO Si7. VEN
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SECTION A—A
A minimum water tap of 1 inch nmst be installed with a nmmnum 1 inch hallcocic
shutoff valve supplvi ngg a wash hose with a diameter of 1.5 inches for adequate
constant pressure. Wash water mist he earned away front the entrance to an
approved settling area to remove sediment. All sediment shall be prevented from
entering storm drains, ditches or watercourses.
PAVED WASH RACK
NO SOA_E
1992
TABLE 6-1
GENERAL EROSION AND SEDIMENT CONTROL NOTES
ES-1: Unless otherwise indicated, all vegetative and structural erosion and
sediment control practices will be constructed and maintained according
to minimum standards and specifications of the Virginia Erosion and
Sediment Control Handbook and Virginia Regulations 4VAC50-30
Erosion and Sediment Control Regulations.
ES-2: The plan approving authority must be notified one week prior to the pre-
construction conference, one week prior to the commencement of land
disturbing activity, and one week prior to the final inspection.
ES-3: All erosion and sediment control measures are to be placed prior to or as
the first step in clearing.
ES-4: A copy of the approved erosion and sediment control plan shall be
maintained on the site at all times.
ES-5: Prior to commencing land disturbing activities in areas other than
indicated on these plans (including, but not limited to, off-site borrow or
waste areas), the contractor shall submit a supplementary erosion control
plan to the owner for review and approval by the plan approving authority.
ES-6: The contractor is responsible for installation of any additional erosion
control measures necessary to prevent erosion and sedimentation as
determined by the plan approving authority.
ES-7: All disturbed areas are to drain to approved sediment control measures at
all times during land disturbing activities and during site development until
final stabilization is achieved.
ES-8: During dewatering operations, water will be pumped into an approved
filtering device.
ES-9: The contractor shall inspect all erosion control measures periodically and
after each runoff-producing rainfall event. Any necessary repairs or
cleanup to maintain the effectiveness of the erosion control devices shall
be made immediately.
VI - 15
Select Minimum Standards
(1) SOIL STABILIZATION-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, BUT LESS THAN ONE YEAR.
PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT
DORMANT FOR MORE THAN ONE YEAR
(2) SOIL STOCKPILE STABILIZATION. DURING CONSTRUCTION, SOIL STOCKPILES AND
BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING
MEASURES.TEMPORARY PROTECTION AND PERMANENT STABILIZATION SHALL BE
APPLIED TO ALL SOIL STOCKPILES ON SITE AND BORROW AREAS OR SOIL
INTENTIONALLY TRANSFERRED OFF SITE.
(3) PERMANENT STABILIZATION. 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 &TRAPS. SEDIMENT BASINS, SEDIMENT 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 OF EARTHEN STRUCTURES. STABILIZATION MEASURES SHALL BE APPLIED
TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES, AND DIVERSIONS IMMEDIATELY
AFTER INSTALLATION.
(6) SEDIMENT TRAPS&SEDIMENT BASINS. SEDIMENT TRAPS AND BASINS SHALL BE
DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE
SERVED BY THE TRAP OR BASIN AS FOLLOWS: SEDIMENT TRAPS-ONLY CONTROL
DRAINAGE AREAS LESS THAN THREE ACRES; MINIMUM STORAGE CAPACITY OF 134
CUBIC YARDS PER ACRE OF DRAINAGE AREA; SEDIMENT BASINS-CONTROL DRAINAGE
AREAS GREATER THAN OR EQUAL TO THREE ACRES; MINIMUM STORAGE CAPACITY OF
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
(7) CUT AND FILL SLOPES DESIGN & CONSTRUCTION-CUT AND FILL SLOPES SHALL BE
DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES
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 DOWN SLOPES. 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) SLOPE MAINTENANCE. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE
DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED.
(10) STORM SEWER INLET PROTECTION.ALL STORM SEWER INLETS MADE OPERABLE DURING
CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT-LADEN WATER CANNOT
ENTER THE STORMWATER CONVEYANCE SYSTEM WITHOUT FIRST BEING
FILTERED/TREATED TO REMOVE SEDIMENT.
(11) STORMWATER CONVEYANCE PROTECTION-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 THE
RECEIVING CHANNEL.
(12)WORK IN LIVE WATERCOURSE. 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
(13) CROSSING LIVE WATERCOURSE. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY
CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A
TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE
MATERIAL SHALL BE PROVIDED.
(14) REGULATION OF WATERCOURSE CROSSING. ALL APPLICABLE FEDERAL, SKATE AND
LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE
WATERCOURSES SHALL BE MET.
(15) STABILIZATION OF WATERCOURSE. THE BED AND BANKS OF A WATERCOURSE SHALL BE
STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED.
(16) UNDERGROUND UTILITY LINE INSTALLATION. UNDERGROUND UTILITY LINES SHALL BE
INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO
OTHER APPLICABLE CRITERIA: NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE
OPENED AT ONE TIME; EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE
OF TRENCHES; EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR
PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH,AND
DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS
OR OFF-SITE PROPERTY; MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE
PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE
STABILIZATION; RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH
THESE REGULATIONS; COMPLY WITH APPLICABLE SAFETY REGULATIONS
(17)VEHICULAR SEDIMENT TRACKING. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES
INTERSECT PAVED OR PUBLIC ROADS: PROVISIONS SHALL BE MADE TO MINIMIZE THE
TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE;
WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE
ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY;
SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND
TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL
BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER
(18) REMOVAL OF TEMPORARY MEASURES.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 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) STORMWATER MANAGEMENT. 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. 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. IF EXISTING
NATURAL RECEIVING CHANNELS OR PREVIOUSLY CONSTRUCTED MAN-MADE
CHANNELS OR PIPES ARE NOT ADEQUATE, THE APPLICANT SHALL PROVIDE CHANNEL,
PIPE, OR PIPE SYSTEM IMPROVEMENT OR PROVIDE A COMBINATION OF CHANNEL
IMPROVEMENT, SITE DESIGN, STORMWATER DETENTION, OR OTHER MEASURES THAT
IS SATISFACTORY TO THE PROGRAM AUTHORITY TO PREVENT DOWNSTREAM
EROSION. ALL MEASURES USED TO PROTECT PROPERTIES AND WATERWAYS SHALL
BE EMPLOYED IN A MANNER THAT MINIMIZES IMPACTS ON THE PHYSICAL, CHEMICAL
AND BIOLOGICAL INTEGRITY OF RIVERS, STREAMS AND OTHER WATERS OF THE
STATE.