HomeMy WebLinkAboutWPO202000004 Plan - VSMP 2020-08-17GENERAL NOTES
0 ViNFR5:
TMP 04600-oo-oo-oigB4
CROCKETT CORPORATION
GO HAUGH & HELVIN
435 PARK ST
CHARLOTTESVILLE, VA 22901
DEVELOPER:
RIVERBEND DEVELOPMENT, INC.
455 SECOND STREET SE, SUITE 400
CHARLOTTESVILLE, VA 22903
ENGINEER:
COLLINS ENGINEERING
zoo GARRETT ST, SUITE K
CHARLOTTESVILLE, VA 22902
TAX MAP:
D4600-00-Do-02984
D.B. 5011, PG.17o
162.75 ACRES
ZONING:
NEIGHBORHOOD MODEL DEVELOPMENT DISTRICT (ZMA2o1800011 WITH
PROFFERS - APPROVED BY THE BOARD OF SUPERVISORS ON JULY 27, 2o39)
THE CODE OF DEVELOPMENT AND AND APPLICATION PLAN FROM ZMA201500007
ARE STILL VALID AND STILL APPLY TO THE BROOKHILL PROJECT.
ENTRANCE CORRIDOR OVERLAY (EC), AIRPORT IMPACT OVERLAY (AIA), MANAGED
AND PRESERVED SLOPES OVERLAY DISTRICT, AND FLOOD HAZARD OVERLAY (FH)
ZONING DISTRICT.
NOTE: A SPECIAL USE PERMIT APPLICATION (SP2o3500025) WAS APPROVED TO
ALLOW THE GRADING ACTIVITIES IN THE FLOOD HAZARD OVERLAY DISTRICT (FH).
THE SP WAS APPROVED ON NOVEMBER 9, 2o16 BY BOS WITH CONDITIONS.
TOTAL PROJECT AREA:
04600-00-00-019B4-162.75AC. (PORTION OF)
BLOCK 9 -io.99 AC
BLOCK iD - 9.66 AC
BLOCK ii -13.92 AC
TOTAL = 34.56 AC
PROPOSED USE:
BS TOWNHOUSE (VILLA) UNITS
ALLOWABLE DENSITY:
BLOCK 9: 19 UNITS (MIN.) TO 57 UNITS (MAX.)
BLOCK 1D: 9 UNITS (MIN.) TO 27 UNITS (MAX.)
BLOCK n: n UNITS (MIN.) TO 53 UNITS (MAX.)
PROPOSED DENSITY:
BLOCK g: 33 UNITS
BLOCK 1D: 24 UNITS
BLOCK 11: 28 UNITS
REQUIRED SPACE:
Bg
Bio
1321
OPEN SPACE PROVIDED:
CIVICIPARK
GREENWAY
OPEN SPACE
BUFFERS
TOTAL GREEN SPACE
0
1.BACRE5
o
1.8ACRE5
.6 ACRES
o
.6ACRES
3.DACRES
o.z ACRES
.ACRES
1.2A RE
.z ACRES
1.3 ACRES
o
to.7 ACRES
CIVICIPARK
GREENWAY
OPEN SPACE
BUFFERS
TOTAL GREEN SPACE
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z. ACRES
o. ACRES
z. ACRE$
tACRES
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ACRES
0.92 ACRES
o. oACRES
a6 ACRES
t.to A RES
8.66 ACRE$
0.54 ACRE$
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to.3o ACRE$
BBB
Bat
BUILDING HEIGHTS:
NO MINIMUM HEIGHT REQUIREMENT.
MAXIMUM - 3 STORIES 14o FEET
SETBACKS:
NEIGHBORHOOD DENSITY RESIDENTIAL- BLOCK STO BLOCK 1g
FRONT SETBACK: W MIN.& 25' MAX.
PORCH SETBACK: 5' MIN & 25' MAX.
SIDE SETBACK: 5' MIN & NO MAX.
SIDE, CORNER LOT SETBACK: 5' MIN. & NO MAX.
REAR SETBACK: w' MIN. & NO MAX.
GARAGE SETBACKS: 18' MIN.
SUBDIVISION STREETS:
CURB & GUTTER
WATERSHED:
SOUTH FORK RIVANNA RIVER
AGRICULTURALIFORESTALDISTRICT:
NONE
TOPOGRAPHY & SURVEY:
TOPOGRAPHY WAS COMPILED FROM SURVEY BY LINCOLN
SURVEYING AND BELL LAND SURVEYS, JANUARY 2015.
BOUNDARY INFORMATION WAS COMPILED BY LINCOLN
SURVEYING ON MARCH 7, 2015. FIELD VERIFIED BY COLLINS
ENGINEERING IN NOVEMBER OF 2oig.
DATUM:
NAVD 2983
EXISTING VEGETATION:
MOSTLY WOODED.
PRESERVED/MANAGED SLOPES: PRESERVED AND MANAGED STEEP SLOPES ARE SHOWN WITHIN THE LIMITS
OFTHE PROPERTY. SEE EXISTING CONDITIONS SHEET FOR LOCATIONS.
LIGHTING:
NO LIGHTING IS PROPOSED.
PHASING:
THESE (3) BLOCKS SHALL BE DEVELOPED AS ONE PROJECT WITH (3) LAND
DISTURBANCE PERMIT AND(3)LAND DISTURBING ACTIVITY. THETOTALACREAGE
OF THE LAND DISTURBANCE WITHIN THIS PHASE IS 18.85 ACRES.
RECREATION:
UPLAND PARK (CIVIC SPACE #2)
3. OUTDOOR PLAZA AND MEETING AREA
2. TOT LOT PLAYGROUND AREA
3. OPEN RECREATIONAL AREA
4. HARD SURFACE PLAY COURT SUCH AS A BASKETBALL COURT,
TENNIS COURT, OR SPORT COURT
5. MINIMUMS SPACES FOR PARKING
6. TRAIL CONNECTION TO THE GREENWAY TRAILS
PARKING:
TWO (2) OFFSTREET PARKING SPACES ARE PROVIDED PER TOWNHOUSE UNIT.
ONE (1) ON STREETPARKING SPACE PER EVERY 4 UNITS IS REQUIRED.
B5 UNITS 14 = 22 PARKING SPACES REQUIRED
22 ON STREET PARKING SPACES PROVIDED
BUILDING SITES:
EACH LOT CONTAINS A BUILDING SITE THAT COMPLIES WITH THE REQUIREMENTS
OF SECTION 4.2.2 OF THE ALBEMARLE COUNTY ZONING ORDINANCE.
BURIAL SITES:
NO CEMETERIES WERE FOUND DURING FIELD INVESTIGATION OF THESE (3) BLOCK
AREAS.
FLOODPLAIN:
THERE IS A FLOODPLAIN LOCATED ON THIS SITE. FEMA MAP ID 51DD3Co28oD
DATED FEBRUARY 4, 2005. IN ADDITION, A DAM BREACH INUNDATION ZONE
EXISTS ON THE PROPERTY FOR THE SOUTH RIVANNA DAM, WHICH IS A FEDERAL
DAM LOCATED UPSTREAM OF THE PROPERTY.
LANDSCAPING:
A LANDSCAPING PLAN IS PROVIDED WITH THE FINAL SITE PLAN IN ACCORDANCE
WITH ALBEMARLE COUNTY ORDINANCE SECTION 32.7.9. STREET TREES ARE
INCLUDED WITH THE LANDSCAPING DESIGN TO INCORPORATE STREET TREES
EVERY 4o' ALONG THE ROADWAYS.
LAND AREAS:
OPEN SPACE: 3B.27 ACRES (54.6%)
LOTS: 7.66 ACRES (22.9%)
ROW DEDICATION: 7.51 ACRES (22.5%)
PROPOSED IMPERVIOUS AREAS: ROADS & SIDEWALK: 17o,625SF
BUILDINGS, PATIOS/DECKS: 95,76DSF
DRIVEWAYS: 37,800 SF
AMENITIES: 7,35o SF
TOTAL IMPERVIOUS AREAS: 3n,335SF (7.15ACRES)
RETAINING WALLS:
RETAINING WALLS ARE PROPOSED WITH THIS PROJECT. SEE GRADING &
DRAINAGE PLAN FOR WALL LOCATIONS.
TRASH:
EACH LOT SHALL HAVE AN INDIVIDUAL TRASH CONTAINER.
UTILITIES:
ALBEMARLE COUNTY WATER & SEWER
AFFORDABLE HOUSING:
AFFORDABLE HOUSING TO BE PROVIDED IN ACCORDANCE WITH THEAPPROVED
BROOKHILL PROFFERS. SEE SHEET16.
TOTAL PROPOSED UNITS: 85
TOTAL PROPOSED AFFORDABLE UNITS: 23 UNITS OR CASH IN -LIEU
OF AFFORDABLE UNITS
NOTE: LOCATION OF AFFORDABLE UNITS TO BE DETERMINED WITH
THE FINAL SITE PLAN OR CASH IN -LIEU OPTION.
BROOKHILL -BLOCKS 9, 10, & 11
VSMP PLAN - WP020200004
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RIVANNA MAGISTERIAL DISTRICT
ALBEMARLE COUNTY, VIRGINIA
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PRO ED ROUTE29 BL s:t''
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EXTENSION OF ARCHER AVENUE TO ASHWOOD ��: •�
BOULEVARD TO BE COMPLETED (UNDER A� \ %'
- - - - \ EPARATE SET OF PLANS) IN ACCORDANCE
I I \ \WITH THE APPROVED BROOKHILL PROFFERS. -- \
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LOT.
LOT z LOT 3 LOT y \ \
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POLO GROUN�
VICINITY MAP:
SCALE: 1" = 2000'
Sheet List Table
Sheet Number
Sheet Title
1
COVER
2
EXISTING CONDITIONS
3
EROSION & SEDIMENT CONTROL NOTES, NARRATIVE & DETAILS
4
EROSION & SEDIMENT CONTROL PLAN - OVERVIEW OF PERIMETER MEASURES
5
PHASE I EROSION & SEDIMENT CONTROL PLAN
6
PHASE I EROSION & SEDIMENT CONTROL PLAN
7
PHASE I EROSION & SEDIMENT CONTROL PLAN
8
PHASE II EROSION & SEDIMENT CONTROL PLAN
9
PHASE II EROSION & SEDIMENT CONTROL PLAN
10
PHASE II EROSION & SEDIMENT CONTROL PLAN
11
PHASE III EROSION & SEDIMENT CONTROL PLAN
12
PHASE III EROSION & SEDIMENT CONTROL PLAN
13
PHASE III EROSION & SEDIMENT CONTROL PLAN
14
EROSION & SEDIMENT CONTROL DETAILS
15
BOX CULVERT PLAN
16
BOX CULVERT DETAILS
17
STORMWATER MANAGEMENT PLAN
18
STORMWATER MANAGEMENT DETAILS
19
STORMWATER MANAGEMENT DETAILS
zo
MANUFACTURER STANDARD NOTES & DETAILS
21
SUBAREA 2 ONE PERCENT PLAN
22
OVERALL BROOKHILL WATER QUALITY COMPLIANCE TABLE & AERATOR DETAILS
Lic. No. 035791�:%
t 8/04/20 /
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I / PROPOSED GREENWAY
` OPEN SPACE \ \ \\ _ \ 22 TOTAL SHEETS
♦ � " LOTS I - ` �' - J� ` _ _ - , \ \ EROSION CON TROL HANDBOOK 0901V 7,, EDI ENT CONTROL
♦ ' `
LOT 6 LOT 34 Loris LOT 36 I \ SA �--�� SAFETY FENCE 3.01
( ' LOT37 \ \ _ \ \
LOT38 CONSTRUC770N ENTRANCE 3.02
LOT 39 \ \ \ \
-- C LOT 33 ' LOT B III ,II CONSTRUC77ON ROAD 3.03
wryo ` ` 1 \ \ STABILIZATION
LOR7C LA / ♦ \ \' \
yPROFOSEDPUBUCRDO / LOTyx \ Sr SILT FENCE 3.05
\ Lorpt \\ \ lP STORM DRAIN INLET PROTECTION 3.07
a , FUTURE ROAD EXTENSION
LOT 43 � _
+ I \ (UNDER DIFFERENT SET OF PLANS)
Lor 30 I r- I Lor n I ' \ LOT yp ♦ \ \ \ \ DD---�-�- TEMPORARY DIVERSION DIKE 3.09
1
{ _ _ `' 1 1 t L0T56 1 OPEN6PAC LOT4S \ �-►► TEMPORARY ROW DIVERSION 3.11
LOT to \ .OUR7YARD \ ♦ \,` \
I LOrty LOT
\ \\ ST SEDIMENT TRAP 3.13
I � � 1 .._� LOT 46 ♦ ♦ � _ A
POSEO Q LOT p7 1
LOTza g LOTSq Pay R7 \ �. SB SEDIMENT BASIN 3.14
` Lor:7 Q A\ 4` II / \ \ \ I \ OP OUTLET PROTECTION 3.18
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1 \ 3 Lorit , LOTpB \ PROPOSED GREENWAYLOT O
I - / LOT Si L0T49 `♦ / LOT 58 \ '
L I LTLOT25
Loru LOT SP CD �UTILITY STREAM CROSING 3.25
- \ Lor6o
Lor:S �\ TS TS TEMPORARY SEEDING 3.31
- JI _ / LDT61 / -
I I _ - - ` \ OPEN SPACE .// /\ / - \ \ PS PS PERMANENT SEEDING 3.32
LOT 63
1 Lor \ TP TREE PROTECTION 3.38
IN-
.\ \
Lort: LOT
Lor By O' / DC DC DUST CONTROL 3.39
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APPROVED
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by the Albemarle County
1 \i Community DevelopPment Department \
r?l ! Date 08/17/2020 \
\ File WP0202000004 �*
_ SHEET LAYOUT
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ACREAGE: 4.12AC
- - - : 1973/473
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N84°47'23�'M' 3992e' �_ A h \ �� /// • �..r, 1 1. NO FLOODPLAIN EXISTS ON THE SUBJECT SITE PER FEMA V ' �� /1 �0
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2. A PROPOSED GREENWAY IS SHOWN ON THE SUBJECT PROPERTY. w w
3. BEFORE BEGINNING SITE WORK, THE CONTRACTOR SHALL 11
INVESTIGATE AND VERIFY THE EXISTENCE AND LOCATION OF 1 1 C 0 0
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/ EXISTING SANITARY SEWER AND I
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K. BEFORE
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45° oe \ IUNDERGROUND ELECTRICAL SERVICES AND OTHER UTILITIES. THE I ��� �_ \ r\ ao N
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i CONTRACTOR SHALL FURNISH LOCATION DATA FOR WORK RELATED
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ACREAGE: 4.75AC
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�ULJJ 2 j o'UNDIS-TURBED
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1992 3.38
EROSION �&� SEDIMENT CONTROL EROSION CONTROL NOTES
MEASURES: : 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE
PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND
STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE /N DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION.
ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND
STRUCTURAL PRACTICES USED /N THIS SECTION CONSIST OF THE FOLLOWING MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF 774E WRG/N/A
EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR
3.01 SAFETY FENCE 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS
A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. 3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR
TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC. AS THE FIRST STEP IN CLEARING.
APPLICABLE TO ANY CON7ROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY VIRTUE OF P07EN77AL ACCESS BY THE PUBLIC. 4• A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE
MAINTAINED THE S17E AT ALL TIMES.
3.02 CONSTRUCTION ENTRANCE 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN
A STABILIZED CONSTRUCTION ENTRANCE LOCATED AT POINTS OF VEHICULAR INGRESS AND INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR
EGRESS ON A CONSTRUCTION SITE TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION
PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONSTRUCTION ENTRANCES SHALL CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY 774E PLAN APPROVING
BE INSTALLED AS SHOWIH ON 774E PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED AUTHORITY.
ONTO PUBLIC ROADWAYS. 6. THE CONTACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION
3.03 CONS7RUCTION ROAD STABILIZATION: CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS
THE TEMPORARY STABILIZATION OF ACCESS ROADS, SUBDIWS/ON ROADS, PARKING AREAS, DETERMINED BY THE PLAN APPROVING AUTHORITY.
AND OTHER SITE VEHICLE TRANSPORTATION ROUTES NTH STONE IMMEDIATELY AFTER 7 ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES
GRADING. TO REDUCE EROSION OF TEMPORARY ROADBEDS BY CONSTRUCTION 7RAFFIC AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING S17F DEVELOPMENT
DURING WET WEATHER AND TO REDUCE EROSION AND SUBSEQUENT REGARDING OF UNTIL FINAL STABILIZATION IS ACHIEVED.
PERMANENT ROADBEDS BETWEEN THE TIME OF INITIAL GRADING AND FINAL STABILIZATION. 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED
USE WHEREVER STONE -BASE ROADS OR PARKING AREAS ARE CONSTRUCTED, WHETHER FILTERING DEVICE.
PERMANENT OR TEMPORARY, FOR USE BY CONSTRUCTION ]RAMC. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY
305 SILT FENCE: CLEANUP
AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR
CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL
A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED BE MADE IMMEDIATELY.
ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED, TO INTERCEPT AND 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA.
DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION i1 ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL
OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING 774E S17E, AND TO DECREASE
THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND
FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS A1774 MINIMAL GRADES TO 07HER DEBRIS.
FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION
INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE PER ZONING ORDINANCE SECTION 5.1.28.
V/RGIN/A EROSION & SEDIMENT CONTROL HANDBOOK (VESCH). 13. ALL INERT MATERIALS SHALL BE TRANSPORTED /N COMPLIANCE WITH SECTION 13-JOI
307 STORM DRAW INLET PROTECTION. OF THE CODE OF ALBEMARLE.
A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT
INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS SHALL BE LIMITED TO THE HOURS OF 7: 00 AM TO 9: 00 PM.
15. BORROW FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT
PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PRO7ECTON APPLIES
WHERE STORM DRAIN INLETS ARE TO BE MADE OPERATIONAL BEFORE PERMANENT MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS,
STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE AREA. PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY
PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE.
3.09 TEMPORARY DIVERSION DIKE 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR
A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A CONVERT TO PERMANENT STORMIll MANAGEMENT FACILITIES WHERE APPLICABLE
SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS ALL EROSION CON7ROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE
AWAY FROM UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO SALE OF ANY LOT, UNIT BUILDING OR OTHER PORTION OF THE PROPERTY.
DIVERT SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -]RAPPING 1Z TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING
FACILITY SUCH AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORMWATER /S 70 BE AT 75 LBS ACRE, AND IN THE MONTHS OF SEP TEMBER 70 FEBRUARY TO
RUNOFF MUST BE TEMPORARILY DIVERTED TO PR07ECT DISTURBED AREAS AND SLOPES OR
RETAIN SEDIMENT ON S17E DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A CONSIST A 50150 MIX OF ANNUAL RYGRASS AND CEREAL WINTER RYE, OR IN MARCH
LIFE EXPECTANCY OF 18 MONTHS OR LESS, WHICH CAN BE PROLONGED WITH PROPER AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF
MAINTENANCE. GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES
ARE SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR.
3.11 TEMPORARY RIGHT-OF-WAY DIVERSION: 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND
A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED ACROSS MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS 1000SF,
DISTURBED SLOPIRIGHTNG
RIGHT-OF-WAY
AND S/THERE SLOPING AREAS 70 SHORTEN THE FLOW LENGTH INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL E APPLIED AT
WITHIN A SLOP/TUG RIGHT-OF-WAY, THEREBY REDUCING THE EROSION POTENTIAL BY
DIVER77NG STORM RUNOFF TO A STABILIZED OUTLET. GENERALLY, EARTHEN DIVERSIONS ARE 1000LBSIACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING
APPLICABLE WHERE THERE WILL BE LITRE OR NO CONSTRUCTION TRAFFIC WITHIN THE SHALL BE APPLIED AT 180LBSIACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL
RIGHT-OF-WAY. GRAVEL STRUCTURES ARE MORE APPLICABLE TO ROADS AND OTHER FESCUE AND 0-5% PERENNIAL RYGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS
RIGHTS -OF -WAY WHICH ACCOMMODATE VEHICULAR 7RAFFIC. TO BE APPLIED AT BOLBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE
3.13 TEMPORARY SEDIMENT TRAP: EROSION CONTROL INSPECTOR.
A TEMPORARY PONO/NG AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT IITH A 19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH
STONE OUTLET. TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED
ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT 70 .SETTLE OUT. USE BELOW
IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 507 OF THE WET STORAGE
DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA /S LESS THAN 3 ACRES, VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN
WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN 18 MONTHS, AND IT MAY BE NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION
CONS7RUCTED E17HER INDEPENDENTLY OR IN CONJUNCTION WITH A TEMPORARY DIVERSION DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED
DIKE.
AND REPAIRED IMMEDIATELY.
20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED
314 TEMPORARY SEDIMENT BASIN: WITHIN 30 DAYS OF FINAL S17F STABILIZATION, WHEN MEASURES ARE NO LONGER
A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWA7ER RELEASE STRUCTURE NEEDED, SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR.
FORMED BY CONSTRUC7NG AN EMBANKMENT OF COMPACTED SOIL ACROSS A
DRAINAGEWAY. TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS 21. THE E&S INSPECTOR HAS THE AUTHORITY TO ADD OR DELETE E&S CONTROLS AS
NECESSARY IN THE FIELD AS SITE COND/TIONS CHANGE. IN ADDITION NO SEDIMENT
IN "WET" AND "DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO
SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTNG DRAINAGE BASIN OR TRAP CAN BE REMOVED WITHOUT WRITTEN AUTHORIZATION.
AREA IS EQUAL TO OR GREATER THAN THREE ACRES THERE MUST BE SUFFICIENT SPACE
AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUCTION OF A TEMPORARY IMPOUNDMENT.
3.18 OUTLET PROTECTION: SOIL DESCRIPTION
STRUCTURALLY LINED APRONS OR 07HER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED
AT THE OU7L£TS OF PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT SCOUR AT 27B-ELIOAK LOAM-.2 TO 77 SLOPES. SOIL IS WELL DRAINED WITH A MEDIUM RUNOFF
STORMW47ER OUTLETS TO PROTECT THE OUTLET STRUCTURE AND TO MINIMIZE THE - - CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0 8" THICK. THE
P07EN77AL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND ENERGY OF DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80".
CONCENTRATED STORMWA7ER FLOWS. APPLICABLE TO THE OUTLETS OF ALL PIPES AND 27C-ELIOAK LOAM-7 TO 15% SLOPES. SOIL IS WELL DRAINED WITH A MEDIUM RUNOFF
ENGINEERED CHANNEL SEC77ONS. CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-8" THICK. THE
3.19 RIPRAP: DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80".
A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH 34C-GLENELG LOAM-7 TO 759 SLOPES, SOIL IS WELL DRAINED WITH A MEDIUM RUNOFF
FILTER FABRIC OR GRANULAR UNDERLINING TO PROTECT THE SOIL FROM THE EROSIVE CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-8" THICK. THE
FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80".
ENHANCING THE POTENTIAL FOR INFILTRATION AND TO STABILIZE SLOPES WITH SEEPAGE
340-GLENELG LOAM-15 TO 259 SLOPES. SOIL IS WELL DRAINED WITH A HIGH RUNOFF
PROBLEMS, AND/OR NON -COHESIVE SOILS USE WHEREVER SOIL AND WATER INTERFACE CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-6" THICK. THE
AND THE SOIL CONDITIONS, WATER TURBULENCE AND VELOCITY, EXPECTED VEGETATIVE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80".
COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS. 39D-HAZEL LOAM-15 TO 257 SLOPES. SOIL IS EXCESSIVELY DRAINED WITH A MEDIUM
3.25 UTILITY STREAM CROSSING.- RUNOFF CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-10"
A STRATEGY FOR CROSSING SMALL WATERWAYS WHEN IN -STREAM UTILITY CONSTRUCTION IS THICK THE DEPTH 0 THE WA TER TABLE IS GENERALLY MORE THAN 80".
C T H W
INVOLVED. TO HELP PR07ECT SEDIMENT FROM ENTERING THE STREAM FROM CONSTRUCTION - -
95 WEHADKEE SILT LOAM-0 70 29 SLOPES, SOIL IS POORLY DRAINED WITH A VERY
WITHIN APPROACH AREAS. TO MINIMIZE THE AMOUNT OF DISTURBANCE M774IN THE STREAM
HIGH RUNOFF CLASSIFICATION. SURFACE LAYER IS TYPICALLY SILT LOAM AND
ITSELF. GENERALLY APPLICABLE TO FLOWING STREAMS WITH DRAINAGE AREAS LESS THAN
ONE SQUARE MILE ABOUT 0-10" THICK. THE DEPTH TO THE WATER TABLE IS GENERALLY 0-30".
331 TEMPORARY SEEDING: REFERENCE: WEB SOIL SURVEY ONLINE DATABASE, FOUND AT
THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING http://websoilsurveynres.usdo.gov/opp/Websoi/Surveyospx
WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND
SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL
GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND EROSION CONTROL NOTES
RUNOFF TO DOWNSTREAM OR OFF-S/TIE AREAS, AND TO PROVIDE PR07EC77ON TO BARE
SOILS EXPOSED DURING CONSMUCTON UNTIL PERMANENT VEGETATION OR OTHER EROSION ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION
CONTROL MEASURES CAN BE ESTABLISHED. AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED
ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA
3.32 PERMANENT STABILIZATION: EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR
THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS.
SEED. TO REDUCE EROSION AND DECREASE SEDIMENT WELD FROM DISTURBED AREAS. TO ES-2. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO
PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER 7HAT /S ECONOMICAL ADAPTABLE
TO S17F CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT MATERIALS CO PRE COMMENCEMENT
T OF LAN CONFERENCE, ONE TY A PRIOR TO 774E
TO IMPROVE WILDLIFE HAB/TAT. TO ENHANCE NAVIRAL BEAUTY. UPON COMPLETION OF COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO
CONSTRUCTION ACTN77ES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER. THE FINAL INSPECTION.
ES-3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR
3.38 TREE PRESERVATION AND PROTECTION:
TO OR AS THE FIRST STEP IN CLEARING.
PROTECTION OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND ES-4: A COPY OF THE APPROVED ERGS/ON AND SEDIMENT CONTROL PLAN SHALL
DISTURBING AND CONSTRUCTION ACTIVITY. TO ENSURE THE SURVIVAL OF DESIRABLE TREES
BE MAINTAINED ON THE SITE AT ALL TIMES.
ES-5:PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN
WHERE THEY WILL BE EFFECTIVE FOR EROSION AND SEDIMENT CONTROL WATERSHED
PROTECTION, LANDSCAPE BEAUTFTCATON, DUST AND POLLUTION CONTROL, NOISE REDUCTION, INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF -SITE
SHADE AND 07HER ENVIRONMENTAL BENEFITS WHILE THE LAND IS BEING CONVERTED FROM BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A
FOREST TO URBAN -TYPE USES. APPLIES IN TREE -INHABITED AREAS SUBJECT TO LAND SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND
DISTURBING ACTVITES.
APPROVAL BY THE PLAN APPROVING AUTHORITY.
3.39 DUST CONTROL., ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL
REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOL/TON AND EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND
CONSTRUCTION ACTIVITIES. TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY.
EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH ES -TALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL
MAY PRESENT HEALTH HAZARDS TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING
LIFE DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR S17E DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.
MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE /N ES-8: DURING DEWA TERING OPERATIONS WATER WILL BE PUMPED INTO AN _
ACCORDANCE WITH THE VESCH. APPROVED WATER FILTERING DEVICE. C
ES-9• THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES
DESCRIPTION OF EROSION & SEDIMENT
EROSION CONTROL NOTES dt: NARRATIVE
CONTROL MEASURES:
PROJECT DESCRIPTION:
EROSION AND SEDIMENT CONTROL MEASURES*
THE PURPOSE OF THIS LAND DISTURBANCE ACTIVITY /S TO CONSTRUCT RESIDENTIAL HOMES AND THEIR CORRESPONDING INFRASTRUCTURE
THIS PROJECT PROPOSES TO DISTURB 18.85 cc. OF LAND. THE PROJECT WILL BEGIN ITS CONSTRUCTION WITH THE PROPOSED ESC
IT IS ANTICIPATED TO USE A CONSTRUCTION ENTRANCE, RIPRAP, OUTLET PROTECTION,
MEASURES IMMEDIATELY FOLLOWING PLAN APPROVAL, WHICH IS ANTICIPATED TO BE /N THE WINTER OF 2020. THE WORK /S ANTICIPATED
DIVERSIONS, SEDIMENT TRAPS, SEDIMENT BASINS, A UTILITY STREAM CROSSING AND SILT
TO BE COMPLETED WITHIN 18 MONTHS AND TO CONCLUDE /N THE SUMMER OF 2021.
FENCES TO CONTROL SURFACE DRAINAGE TEMPORARY SEEDING WILL BE USED IMMEDIATELY
EXISTING SITE CONDIAONS:
FOLLOWING ALL LAND DISTURBANCE ACTIVITIES. TEMPORARY STOCKPILE AREAS ARE NOT BE
THE AREA OF THE PROPOSED DEVELOPMENT IS LARGELY WOODED AREAS WITH OPEN SPACES AND LIGHT UNDERBRUSH. THIS S17E
REQUIRED WITH THIS PROPOSED DESIGN. SHOULD FIELD ADJUSTMENTS NECESSITATE A SMALL
GENERALLY SLOPES FROM THE WEST TO THE EAST AND FROM THE NORTH TO THE SOUTH. THE SITE /S GENERALLY STEEP AND /S WELL
DRAINED.
STOCKPILE AREA, IT SHALL BE DISCUSSED W/TH THE ESC INSPECTOR AHEAD OF TIME. THE
ADJACENT AREAS:
STOCKPILE WILL NEED TO BE MAINTAINED AND STORED FOR LATER SPREADING. STOCKPILE
THIS S17E /S BORDERED ON THE EAST BY A STREAM PROPOSED TO BE PRESERVED. NORTH OF THE PROPOSED S17E /S ROUTE 29. WEST
LOCATIONS SHALL BE ON SITE AND SHALL BE STABILIZED WITH A TEMPORARY VEGETATIVE
OF THE DEVELOPMENT /S A SITE CURRENTLY UNDER RENEW UNDER A DIFFERENT SET OF PLANS. THUS AREA IS SERVED BY STELLA ROAD
COVER. PERMANENT SEEDING WILL BE PERFORMED FOR ALL AREAS WHICH WILL NO LONGER BE
UNDER SDP 201700117. STELLA ROAD IS PROPOSED TO BE EXTENDED WI774 THIS PLAN. TO THE SOUTH OF 774E PROPOSED DISTURBANCES
EXCAVATED AND WHERE CONSTRUCTION ACTIVITIES HAVE CEASED. PERMANENT SEEDING SHALL
/S THE STREAM REFERENCED ABOVE. THE STREAM WRAPS AROUND THE PROPOSED DISTURBANCES. ALL OF THE AFOREMENTIONED AREAS
ARE CURRENTLY VACANT. SILT FENCE WITH WIRE BACKING, DIVERSIONS, SEDIMENT TRAPS & BASINS INLET CONTROLS A UTILITY STREAM
ALSO BE PERFORMED FOR ALL DENUDED AREAS WHICH W/LL BE LEFT DORMANT FOR A YEAR OR
CROSSING AND VARIOUS OTHER ESC MEASURES ARE PROPOSED TO LIMIT THE P07EN77AL FOR CONTAMINATION OF THESE ADJACENT
MORE. SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. TEMPORARY
PROPERTIES AND WATERWAYS.
SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR
OFFS17E LAND DISTURBANCE,
MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH FAST GERMINATING
OFFSITE LAND DISTURBANCE /S LIMITED TO PUBLIC RIGHT-OF-WAY AND AREAS LOCATED WITHIN THE OVERALL BROOKH/LL DEVELOPMENT
VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. SELECTION OF SEED MIXTURE
BOUNDARY.
WILL DEPEND ON 1774E TIME OF YEAR APPLIED.
SESDIL OIL DESCRIPTIONS ON THIS PAGE AND THE PHASE / EROSION & SEDIMENT CONTROL PLAN FOR BOUNDARIES, SOIL TYPES AND SOIL
DESCRIPTIONS.
301 SAFETY FENCE- TO DISCOURAGE ACCESS TO A PARTICULAR AREA.
CRITICAL AREAS:
3.02 CONSTRUCTION ENTRANCE - TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED
EXIS77NG WETLANDS AND INTERMITTENT STREAMS ARE LOCATED ON THE PROPERTY DOWWGRAD/ENT FROM THE PROPOSED DEVELOPMENT
PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF.
THESE AREAS /N ADDITION TO THE MANAGED AND PRESERVED STEEP SLOPES ARE CONSIDERED TO BE CRITICAL AREAS. THE
303 CONSTRUCTION ROAD STABILIZAT70N - TO REDUCE THE EROSION OF TEMPORARY
CONTRACTOR SHALL GIVE EXTRA ATTENTION AND CAUTION IN AND AROUND THESE AREAS TO ENSURE SEDIMENT IS NOT DEPOS17ED ON
THEM OUTSIDE 7HE SCOPE OF THE PROPOSED PLAN. TREE PROTECTION FENCING, SILT FENCING, DIVERSIONS AND SEDIMENT TRAPPING
ROADBEDS BY CONSTRUCTION TRAFFIC AND TO REDUCE THE EROSION AND SUBSEQUENT
DEVICES SHALL ALSO BE INSTALLED AS A FIRST STEP /N LAND DISTURBANCE TO ENSURE THESE CRITICAL AREAS ARE MAINTAINED.
REGARDING OF PERMANENT ROADBEDS BETWEEN THE TIME OF INITIAL GRADING AND FINAL
SEQUENCE OF CONSTRUCTION:
STABILIZATION. CONSTRUCTION ROAD STABILIZATION WILL BE APPLIED TO THE CONTRACTOR
1. CONTRACTOR SHALL NOTIFY THE ALBEMARLE COUNTY COMMUNITY DEVELOPMENT ENGINEERING DEPARTMENT TO SCHEDULE A
PARKING &STAGING AREAS AS NEEDED.
PRE -CONSTRUCTION MEETING.
305 SILT FENCE- SILT FENCE IS PROPOSED, WHERE SHOWN ON THE PLANS.
2. PRIOR TO DISTURBANCES, THE LIMITS OF DISTURBANCE AND PRESERVED SLOPES SHALL BE FLAGGED AND THE TREE PROTECTION
FENCING SHALL BE INSTALLED. NO GRADING MAY BEGIN UNTIL THE LIMITS OF DISTURBANCE AND PRESERVED SLOPES HAVE BEEN
307 STORM GRAIN INLET PROTECTION- INLET PR07ECTlON IS PROPOSED ON INLETS WHERE
FLAGGED AND THE TREE PR07EC77ON HAS BEEN INSTALLED.
SHOWN ON THE PLANS.
J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE APPROVAL FROM THE
3.09 DIVERSION- PERIMETER DIVERSIONS ARE PROPOSED WHERE SHOWN ON THE PLANS TO
INSPECTOR ON THE PROJECT.
DIRECT RUNOFF INTO A SEDIMENT TRAPPING DEVICE.
4. INSTALLATION OF THE PROPOSED CONSTRUCTION ENTRANCE SHALL OCCUR NEXT THE CONTRACTOR SHALL APPLY CONSTRUCTION
ROAD STABILIZATION AS NEEDED. CONTRACTOR SHALL ENSURE THE CONSTRUCTION ENTRANCE DRAINS TO AN ADEQUATE E&S
313 SEDIMENT TRAP- SEDIMENT TRAPS ARE PROPOSED WHERE SHOWN ON THE PLANS
MEASURE THE CONTRACTOR SHALL INSTALL SEDIMENT TRAP #5 FOR VEHICULAR WASH OFF, ALONG WITH THE ASSOCIATED DIVERS/ON
314 SEDIMENT BASIN- SEDIMENT BASINS ARE PROPOSED WHERE SHOWN ON THE PLANS
BERMS AND RIGHT OF WAY DIVERSION BERM. CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES
3.18 OUTLET PROTECTION -OUTLET PROTECTION IS PROPOSED AT THE OUTLET OF PIPES 319
INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING
RIPRAP- RIPRAP /S PROPOSED AT THE OUTLET OF PIPES.
ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED
325 UTILITY STREAM CROSSING -A UTILITY STREAM CROSSING /S PROPOSED FOR THE
THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND
TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED
CONSTRUCTION OF STELLA LANE'S EXTENSION.
IN THIS MANNER. SEDIMENT LADEN RUN-OFF FROM THE CONSTRUCTION EN7RANCE AND DISTURBED AREA WITHIN THE DRAINAGE
332 PERMANENT SEEDING -PERMANENT SEEDING /S REQUIRED AND PROPOSED WITH THIS PLAN. AREA TO SEDIMENT TRAP #5 SHALL BE ROUTED TO THE TRAP WITH THE INSTALLATION OF THE DIVERS/ON BERMS AND ROW
338 TREE PRESERVATION AND PROTECTION- TREE PROTECTION IS PROPOSED WITH THIS PLAN. DIVERSION BERM.
SEE THE ESC PLAN FOR THE REQUIRED LOCATIONS. 5. ONCE THE CONS7RUCTION ENTRANCE HAS BEEN INSTALLED ALONG WITH SEDIMENT TRAP 0 AND ITS ASSOCIATED DIVERSION BERMS Source: Va. DSWC
339 DUST CONTROL,DUST CONTROL IS REQUIRED AND PROPOSED WITH THIS PLAN. AND RIGHT OF WAY DIVERSION BERM, THE CONTRACTOR SHALL INSTALL THE UTILITY STREAM CROSSING (PROPOSED CULVERT
CROSSING.)
MAINTENA6. THE CONTRACTOR SHALL INSTALL THE 6' WIDE 2: 1 SIDE SLOPE TYPE B UTILITY STREAM CROSSING AS SHOWN AND NOTED ON PHASE Payed construction entrance For crinion control plans
NCE•
•
I OF THE EROSION AND SEDIMENT CONTROL PLANS. THIS SHALL INCLUDE THE STREAM DIVERSION AND THE INSTALLATION OF THE
IN GENERAL, DURING CONSTRUCTION THE RLD OR CONTRACTOR ON -SITE WILL CHECK ALL EROSION
CULVERT. ONCE THE COUNTY AND VDOT INSPECTORS HAVE APPROVED THE CULVERT INSTALLATION, THE CONTRACTOR MAY INSTALL
AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH SIGNIFICANT RAINFALL. MONITORING
THE FILL MATERIAL OVERALL THE CULVERT. THE DOWNSTREAM EROSION CONTROL MEASURES SHALL BE INSTALLED PRIOR TO THE
REPORTS WILL BE REQUIRED FROM THE RLD IF NEEDED. SPECIFIC ATTENTION WILL BE GIVEN TO
/NSTALLATON OF THE FILL MATERIAL, INCLUDING THE WIRE SILT FENCE. THE CONTRACTOR SHALL ONLY INSTALL ENOUGH FILL
THE FOLLOWING ITEMS.,
MATERIAL OVER THE CULVERT PIPE TO ACCESS THE AREAS ON THE NORTH SIDE OF THE CULVERT PIPE.
o.SED/MENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN ACCORDANCE WITH
7 ONCE ENOUGH FILL MATERIAL HAS BEEN INSTALLED FOR A STREAM CROSSING WITH THE EARTH MOVING EQUIPMENT, THE
THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK.
CONTRACTOR SHALL CONTINUE TO INSTALL THE REMAINING ESC CONSTRUCTION MEASURES, AS SHOWN ON THE PHASE I EROSION &
b.ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT WILL
SEDIMENT CONTROL PLAN. THE MEASURES INCLUDE INSTALLING THE PER/METER SILT FENCE AND PERIMETER DIVERSION BERMS
PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT, THE GRAVEL WILL BE
PERIMETER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE
REMOVED AND CLEANED, OR IT WILL BE REPLACED.
ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
c.ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETER/ORATION
8. ONCE THE PERIMETER EROSION CONTROL MEASURES HAVE BEEN INSTALLED AND THE COUNTY INSPECTOR HAS APPROVED THESE
OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL
MEASURES THE CONTRACTOR MAY PROCEED WITH THE LAND CLEARING OPERATIONS FOR THE INSTALLATION OF 774E SEDIMENT TRAPS
OF SEDIMENT DE/TON REACHED HALF WAY TO THE TOP THE BARRIER.
AND SEDIMENT BASINS. THE CON7RACTOR SHALL BEGIN BY CLEARING THE AREAS REQUIRED TO ACCESS THE LOCATIONS OF SEDIMENT
d.SEEDED AREAS WILL CHECKED REGULARLY TO SEE THHAA T A GOOD STAND IS
BASINS 1 & 2, SEDIMENT TRAPS 1, 2, 3, & 4 AND THE AREAS DESIGNATED AND OR APPROVED BY THE INSPECTOR FOR CUT
AIBE FERTILIZED AND RESEEDED AS NEEDED.
MAINTAINED. AREAS SHOULD
Q RE UIRED FOR 174E EMBANKMENT CONSTRUCTION.. INSTALLATION OF SEDIMENT BASIN 1 SEDIMENT BASIN 2 SEDIMENT TRAP 1 2
IN CASE OF EMERGENCY. THE PRIMARY CONTACT FOR THE PROJECT WILL BE THE RLD OR
3 & SHALL IMMEDIATELY FOLLOW THE SELECTIVE CLEARING. SEDIMENT BASIN 2 SHALL INCLUDE THE INSTALLATION OF TWO 6'
# . #4 #
CONTRACTOR ON -SITE. THE CONTRACTOR AT THIS TIME IS DIGS. BROOK WOOD lI7H DIGS MAY
WALLS TO PR07ECT THE BUFFER ADJACENT TO ROUTE 29. FOLLOWING THE INSTALLATION OF 774ESE MEASURES THE CONTRACTOR
BE REACHED AT (434) 978-4435. IN ADDITION THE OWNER MAY BE CONTACTED. UPON
SHALL INSTALL THE DIVERSIONS ANY REMAINING EROSION CONTROL 17EMS AS SHOWN ON THE PHASE I EROSION CONTROL PLAN
COMPLETION OF THE PROJECT, THE OWNER W/LL BE RESPONSIBLE FOR S17F MAINTENANCE.
SHALL ALSO BE CONSTRUCTED AT THIS TIME.
9 ONCE ALL THE PHASE / EROSION CONTROL I7EMS HAVE BEEN INSTALLED & ARE OPERATIONAL DRAINAGE IS PROPERLY CONVEYED TO
THESE MEASURES, AND THE ESC INSPECTOR HAS GRANTED APPROVAL, 774E CONTRACTOR CAN BEGIN CLEARING THE REMAINDER OF
THE SITE TEMPORARY SEEDING, PERMANENT SEEDING AND DUST CONTROL SHALL BE IMPLEMENTED AS REQUIRED.
10. AFTER CLEARING THE PROPOSED AREAS, THE CONTRACTOR CAN PROCEED TO PHASE /I OF THE EROSION & SEDIMENT CON7ROL PLAN.
THE CON7RACTOR SHALL BEGIN ROUGH GRADING THE SITE TO THE CONTOURS SHOWN ON THE PHASE ll EROSION & SEDIMENT
CONTROL PLAN. UPON INSPECTOR APPROVAL, THE CONTRACTOR SHALL REMOVE SEDIMENT TRAP 3 AND 4. MEASURES INTENDED TO
TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL
BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
11. THE CONTRACTOR SHALL INSTALL ANY REMAINING EROSION CONTROL I7EMS AS SHOWN ON THE PHASE lI EROSION CONTROL PLAN.
TEMPORARY SEEDING, PERMANENT SEEDING AND DUST CONTROL SHALL BE IMPLEMENTED AS REQUIRED.
12. 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 UNDISTURBED FOR LONGER THAN 30 DAYS PERMANENT
STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR.
13. ONCE THE S17E IS ROUGH GRADED, THE CONTRACTOR SHALL BEGIN PHASE 111 OF 774E EROSION & SEDIMENT CONTROL PLAN. THE
CONTRACTOR CAN BEGIN INSTALLATION OF THE UTILITIES, CURB AND GUTTER AND ROADS. INSTALL SEDIMENT TRAP 6. INLET
PROTECTION SHALL ALSO INSTALLED AS THE STORM SEWER IS CONSTRUCTED. INLET PROTECTION SHALL BE INSPECTED AFTER EACH
RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF THE STONE FILTER BECOMES CLOGGED WITH SEDIMENT SO THAT IT
NO LONGER ADEQUATELY PERFORMS ITS FUNCTION, THE STONE MUST BE PULLED AWAY AND CLEANED AND/OR REPLACED.
14. THE CONTRACTOR SHALL ALSO WORK WITH THE ESC INSPECTOR ON THE TIMING OF THE REMOVAL OF SEDIMENT TRAP #2. SEDIMENT
TRAP #2 SHALL BE REMOVED AFTER THE STORM SEWER AND INLET PROTECTION IMMEDIATELY ABOVE IT AND BELOW ARE INSTALLED
AND ARE MADE OPERATIONAL. THE CONTRACTOR SHALL FILL SEDIMENT TRAP #2 AT THE SAME TIME THIS AREA IS BROUGHT UP TO
FINISHED GRADE AND /S SEEDED. THE CONTRACTOR SHALL PAY SPECIAL ATTENTION TO THE SILT FENCE BENEATH THIS AREA AT THIS
TIME AND ENSURE IT CONTINUES TO BE EFFECTIVE.
15. ONCE PHASE N/ OF CONSTRUCTION IS COMPLETE THE S17F IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE
CONTRACTOR CAN THEN CONVERT SEDIMENT BASIN #2 INTO THE PROPOSED SWM FACILITY. AT THIS TIME, THE CONTRACTOR CAN
REMOVE THE REMAINDER OF THE EROSION & SEDIMENT CONTROL MEASURES INCLUDING SEDIMENT TRAP #6 AND INSTALL THE
UNDERGROUND DETENTION FACILITY NO ITEM SHALL BE REMOVED, THROUGHOUT ALL PHASES OF CONSTRUCTION, UNLESS THE
UPSTREAM AREAS ARE STABILIZED AND 7HE INSPECTOR GIVES PERMISSION.
16. THE CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE ORG/NIA EROSION AND SEDIMENT
CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE K17 H THE VIRGINIA
EROSION AND SEDIMENT CONTROL HANDBOOK.
17. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL S17E STAB/LIZA77ON
Source: Va. DSWC OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHOR/ZED BY THE LOCAL PROGRAM I
ADM1NI57RATOR. ]RAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES
RMA:VArc-��i NT �,..,,,,,,,, ,,,,,,,,,�.,�,.,..,,
1992m 1
L... l..,
ENTRENCHED 8"
COMPACTED S � 3 MINDEUN -�
'I
UIN- _ _ -
LA -
_�� ' f I I I ____
-nl III ,I-L_lu._I
Ali 11 II IIHII Ir 'L, -
-_ 8 TUNTN(Ta
DD TEMPORARY 18" DIVERSION BERM
1. SET POSTS AND EXCAVATE A 4'X4"
TRENCH UPSLOPE ALONG THE LINE
OF POSTS
PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY 1 I /
NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE -t TIif
EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. I /
i-
GENERAL SLOPE (3i1 OR LESS) PER ACRE
TOTAL LBS I I I-: I
KENTUCKY 31 FESCUE 128 LBS. FLOW I 1�4HEIILL
RED TOP GRASS 2 LBS.
SEASONAL NURSE CROP 20 LBS. 4
J. ATTACH THE FILTER FABRIC TO
SEASONAL NURSE CROP 150 LBS THE WIRE FENCE AND EXTEND
IT INTO THE TRENCH.
FEBRUARY 16 THROUGH APRIL ANNUAL RYE
MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET
AUGUST 16 THROUGH OCTOBER ANNUAL RYE
NOVEMBER THROUGH FEBRUARY 15 WINTER RYE
NOTES: M4�4_
1,LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL
TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. �/
2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION �
5
__/
2. STAPLE WIRE FENCING TO
THE POSTS.
4. BACKFILL AND COMPACT THE
EXCAVATED SOIL.
J
, _
OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. / II'`1I1 I FLOW / Y
- / I IIIII�II - � -I -
Acrylic Emulsion I PS PERMANENT SEEDING SCHEDULE
(Traffic) 3.5:1 Coarse Spray 350 NO SCAL
(STD. & SPEC. 3.32 OF VIRGINIA EROSION &
Source: Va. DSWC SEDIMENT CONTROL HANDBOOK, 3RD ED.)
I_ _II
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
Ull SILT FENC,5
ssF WITH WIRE -BACK QEE2
NO SCALE
1
Paso DRAINAG
•LR � Ter- F MOTH I A
NE E
VINE EXTEND uEG D L--�j TO SEDIMENT
r IN
GRESS NGRESS ANO EGRESS
DEVICE
FTC
OPERATION TRAPPI
PIM
r T2• 11i
Plate 3.38-2
F.
F
51174E DBNIMCI
SEDIME
NT
WRING DEMCL
SECTION A -A
A luuwu■uu wale tap of 1 such uvuM be moaned With a Hamill 1 Inch balk ocF
KI 1�0 l'a '! NI l a 1CA ONt N a / N 0 CIItK O ad ILFh 1 H h 4TI guar dl h 7W (18111 a f t w f 1 ey
c01E`LtaW plessl■t. WaA Wale nail be caused awxv hour due enhance to all
appl os'ed sett41Tg s ea to I ew %,e sedaEmo All snWueut shall be pi eveded L ow
aSThimm doETu (hams. (htcht 01 natacolkl
PAVED WASH RACK
3. 992
25
ROCK CHUCK DAM
VDOT E1
COARSE AGGREGATE
now
Source: Va. DSWC
I
+.- ;%Zo
(DOWNR-TRFAV1 VIEW)
CLASS I RIPRAP
DIVERSION CHANNEL CROSSING
FLOW
FORMER LOGigN I
aF rlyW iRARalR 1 Iy
SET FENCE
--a
( • FaaN!N,
A-A�j-jig
�•''' t'' :.0 .
r r "I -
UIOSSING.
ORIl STREAM DC \%
a a
C;:)
`. �, -a-
. ., I -
Plate 3.20-I Source: Va. DSWC
V DI ERSION CHANNEL CROSSING
ACCEPTABLE LININGS
(CROSS SECTION A -A OF PLATE 3.25-1)
SILT FENCE POST POST SILT FENCE
TYPE A DIVERSION
16 kill POLYETHYLENE I6 NIL. MIN.)
OR
CRASS LNER
EkSTNG GROUND �, 'V EXISTING GROUND
TYPE B DIVERSION
'JPFPP FIL;P C.p_N
,
EXIFfl O GROUND 13,4 1.* E l51 ,.' .,'
TYPE C DIVERSION
RIPRAP FILTER-7- QOIN
ROCK OR SMOBAG UNER
EXISTING GROUND 7'F 1` EXISTING GROUND
• 6• MINIMUM OR MDTH OF EXISTING STREAM WH� S
•• ENTRENCH SILT FENCE AND FILLER CLOTH N SWE ERENCN
Plate 3.25-1 Source: Adapted from VDOT Standard Sheets
3.25
Plate 3.25.2
Lic. No. 035791 Aa
8/04/20 �A
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Lic. No. 035791,a
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IN FEET
1 inch = 80 ft.
,
LEGEND LEGEND
SAFETY FENCE PER VESCH r 3.01
LIMITS OF LAND DISTURBANCE
/
i CE CONSTRUCTION ENTRANCE PER VESCH 3.02
SBi � � �� / _ i � , y t � 4 d 4 DIVERSION DIKE
SF SUPER SILT FENCE PER VESCH 3.05 BOUNDARY LINE
IP INLET PROTECTION PER VESCH 3.07 X—X—X—X— SILT FENCE
DIRECTION OF FLOW
DD DIVERSION DIKE PER VESCH 3.09
653.75 PROPOSED CONTOUR
W RIGHT OF WAY DIVERSION PER VESCH 3. 11 ________,
-- DRAINAGE DIVIDE
SB SEDIMENT BASIN PER VESCH 3.14 SOILS LINE
OP OUTLET PROTECTION PER VESCH 3.18 WATER WAY
TS TEMPORARY SEEDING PER VESCH 3.31 TREELINE
I` C3 7 i it PRESERVED SLOPES
�` �o ib CO, i� / -- - --- _-- - 1 / PS PERMANENT SEEDING PER VESCH 3.32 MANAGED SLOPES
ply / - _ _ - - f �. ` _ _ _ - -F - / , / TP TREE PROTECTION TAPE PER VESCH 3.38
\ I o0 ,' / / - - - - / / \ - SWM FOREST &
1 1 1 OO ,1 a OO OO / - DUST CONTROL PER VESCH 3.39 ____ ______i OPEN SPACE EASEMENT
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SHEET NO.
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„> - - ♦ PROPOSED LIMITS OF DISTURBANCE. - ♦.. _ -
ur ■ur■ ■rpr■ - - - ♦ PROPOSED LIMITS OF . '. - -
■uu■ ----- r■ ■uuu aura ■ rr•r.■ ,�♦ IS CONCURRENT WITH AND DOES
rauurrr ■■ p 447TW
.a SOIL TYPE ■rrrrrp.. 1 NOT THE70' WIpE 'TREE - - ♦♦1 T�i �F
- STORBANCE, TYP. 447 BW.. h��
soa TYPE - ♦ 30' PLANTED/REFORESTED
• ■rrrr ♦ BUFFER,AS SHOWN. PROTECTION TP - - ♦♦v '”
`T� srI - - ■rppr■ rapt■ - �® 454 TW CJ 39D •v BUFF R `-------------------' ----- - --;- ---- a a4B BW ♦+♦ B
------------- ---- rw
♦ BW a52. BW.
---- ♦ asa rw ' �SCOTT R. LLINS'Z,
------ -
448 TW 48'450 BW', 454 TW U L1C. No. 035791
-----'---v/+lJIR£� ---- ----- - -- MANAGED STEEP
BACKING SF SLOPES (TYP.) �4 W ♦ 454 BW $ 04 20
PROPOSED 18 DIVERSION. ♦ i
CONTRACTOR SHALL ENSURE j ---------------------_ 9 _ ` S�,I
SOIL BOUNDARY, -----
Np_ DO POSITIVE SLOPE IS MAINTAINED. o - - - - - ♦ ONAL
ST3 c BERM SHALL BE STABILIZED AS ♦ y____.___.__________________________ ♦♦is
O ST # 3 A FIRST STEP IN DISTURBANCE. ■ .Q --- - - -is
PROPOSED LIMITS OF DISTURBANCE COINCIDES _ - ----
;- WITH THE WESTERN PROPERTY LIRE 70' BUFFER. _._------_ _--_
1 18 ac. THE TREE PROTECTION, TREELIAE, LIMITS OF ♦♦
„ DISTURBANCE LINE AND DRAIIGE DIVIDE ARE
AF
ALL OFFSET FOR GRAPHICAL PURPOSES. ■ \
■
■
■
\ W W W
♦♦♦ I ♦ \ F
ilim
D O 0 0
♦.rr■ ■ru■rpprprrr•r••rr•• 1 I II =_ z U
♦r♦r♦ ♦ _
�� 506E TYP� * ~ � � ~
■ r••#1♦•�■rra�rurrrrruur�ruuuurruurrrruru�urrraaa♦ SB2 1 PROPOSED Q 0
■ •■ ■rub ♦� II I i39D GREENWAY (TYP.) = U OU o 0 0
■ prrrp rrrruurrrarprrapu ® I _
-1 ■-._ N m
♦ ■ G Z W W N m
00
—
im-
(D W W W
I ■ ■ —
■
■�■ > m 0_
if ■ I ♦ w/ WIRE � z
1 0 ♦ ■
�I ■ ! _ ■ BACKIN SF z 5 5 5 5
'PROPOSED ■ TREE ♦ ■
TP
GREENWAY (TYP.) r■ PROTECTION ST #' 1 Asw w w
lim
■ TS ♦ ■ SB #2 cY r
♦ Ilk-
■ 58 a
PROPOSED LIMITS OF � ♦`"'
• DISTURBANCE, TYP. - - ♦ W —
DC i SOiLTY^I- - (DCI - see ♦ L F-
♦ TS
z
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PI2 POSED SAFETY FENCE, ♦♦ CC
li INSTALL SIGNS"WARNING 1♦ ♦ r00 U o
QUICK SAND, KEEP OUT" ♦♦ 1� - \ \
SOILTYPE ♦ ♦ r Q~ w '-'I IN N 2
.I /. ■ 27B ♦� _ !S '- - �♦ PROPOSED SAFETY FENCE, Q IN ON o "'
IN r♦- - i ♦ ,i ♦♦♦ INSTALL SIGNS WARNING �i N M ko 00 o
■ ♦♦ ; ♦♦ ♦ r♦♦r -- _ QUICK SAND, KEEP OUT"
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■ ♦ ♦ r
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♦♦ PROPOSED 18 DIVERSION. --
` ■ ♦♦1 ♦• a j~.: ♦♦ �
CONTRACTOR SHALL ENSURE DO ♦ 0* E
! ♦ - ■ ♦ POSITIVE SLOPE IS MAINTAINED.
♦ •
i O' o ■
` ♦♦♦♦ ° Are BERM SHALL BE STABILIZED AS
♦ SOIL BOUNDARY, A FIRST STEP IN DISTURBANCE. ♦� '
♦♦O s ♦♦ 0 TYP.
♦♦ • as TS 1 ` ♦♦ L
♦♦♦ ♦ ♦ ♦ - 0 L9
♦ ♦-■
r♦O ♦ ♦♦ I / ` k % m
S
h ♦ r • I k
♦rrrr♦♦♦r i� ♦♦♦♦♦♦1 ®♦♦♦ 100' / k
1♦♦ ♦r♦♦sr♦♦♦•rr♦ �k: 1 -- p♦ ♦ ♦♦♦♦ ♦♦�♦ ♦ �00 I��� �k�kkkk kk �_ ^
.I ♦ see ■ ♦ a
s ♦♦ TS ♦ ■
■ r♦r ♦ ■ _ STREAM,,,k./..
TYR
■ ♦ ♦♦♦rsee
♦♦ ■ � N V 1 Z PRESERVED STEEP J i r♦♦ ♦ I ♦ ■ y ._ C)
` SLOPES P. ■ ■ra ■ 1/ _ - �_ - �(
I ) ♦rr♦♦r PROPOSED 18" DIVERSION. DC ♦♦♦♦ ■ % 4% : / / r- �`_ --
q i ♦ CONTRACTOR SHALL ENSURE ' ♦ ■ ■ <� / / CV —I
/✓/ : ♦r♦♦♦♦ DO POSITIVE
SLOPE
BERM BE STABILIZED AS _ ♦♦♦ • POTENTIAL LOCATION FOR ESC PHASE I EXCAVATION. ■
® ♦ A FIRST STEP IN DISTURBANCE. of FINAL FINAL GRADES IN THIS VICINITY ARE APPROXIMATELY r j �THE`UND. ESC PHASE Ik / - \� ' J
♦♦♦♦♦♦♦♦♦'\ rr♦a♦♦♦a♦rra♦♦♦• CONSTRUCTION OF ESC FACILITI10'-18' BELOW EXISTING OES EXCAVATION CAN BE UTILIZED FOR FILL N SHALL / ■ / / %/ - /
♦♦ - ♦rrr " • - ONLY OCCUR AFTER INITIAL ESC MEASURES ARE `/ ' Tell
a♦♦r♦ _ ra♦♦rp i S GRANTED J � s♦s sa♦♦r
■rrurrrr■■:a ♦♦r♦♦♦♦r♦ •o 'DC INSTALLED &AFTERT APPROVAL.
HAS / : i,, _ _ — / °. J Z
® `�'
.o•
GRAPHIC SCALE u
-- -----
LIJ
30 0 15 30 60 120r z .
■ I � °y ♦ ♦♦ TS r:.�- � ■: I
f � PROPOSEDL9
\k/ WPROPOSED OGREENWAY, TYP. ♦♦ GREENWAY (TYP) IN FEET
♦♦
■ ` Fr 'i / 1 inFh_ = ' 30 Ft.
■_. ■ k k k c
LL
=,L ■ ' ■ PROPOSED SWIM FOREST & OPEN ` k. k. k, k k, k k k < F/ i , J t'` �� i. ®� �00 -
(L ■ i SPACE EASEMENT (TYPICAL) t k ` Li
W
_■ _ PROPOSED 1 DIVERSION.■ - '\ a e k k . 6 k k �-� / -
/ U
co
W ,,,✓ CONTRACTOR SHALL ENSURE ■ / PROPOSED WALL. A DIVERSION SHALL k kkk k kk kk
■ DO POSITIVE SLOPE IS MAINTAINED ■ i
♦.. i BE INSTALLED UPHILL OF THE WALL TO a k k / 1 - �' Y i
Z
1 :� AFIRSTHSTEP BND DISTURBANCE. �■ i TP DIVERT RUNOFF TO SEDIMENT BASIN1 k�k- k k -� / k .1� / /� r!'� ', #0 w `/ O
Z L TREE � V
W
/ '
• PROTECTION �k y�� O O
i s♦ .•00
/ I Cn
-.0 00 ul —i
■Q
I i
t` _ / '.,®4♦ PROPOSED STOCKPILEi �II.
♦ SURROUNDED 8Y W i ♦ �, G / - — ILL
'■ SILT FENCE \ ♦ \ - )i • - 00 a W W W
#♦ PROPOSED LIMITS OF DISTURBANCE. THE TREE - / ■ V) ♦_ U ,
♦ PROTECTION FENCING SHALL BE PLACED ON THE \ - �,� / '� = Z = <
® • I , LIMIT OF DISTURBANCE LINE, WITH THE SILT !\ - F
I� FENCE INSTALLED IMMEDIATELY ADJACENT TO J LO U) J
SOILTYPE
THE TREE PROTECTION FENCING. THE / is (n
• ! DIVERSION, DRAINAGE DIVIDE, SILT FENCE, TREE Ile
ST #4 2 B ® 0 PROTECTION LINE, LIMITS OF DISTURBANCE, AND I / ' Q ♦•
STy I • i TREELINE ARE ALL OFFSET FOR GRAPHICAL
0 1.28 ac. oc, ♦ W
♦ PURPOSES.. i �
1 ST # 2 ® j , SF w/ WIRE I �' / ! t PROPOSED
♦ - • PROPOSED 16 DIVERSION. I BACKING ,
♦ ♦ - _ CONTRACTOR SHALL ENSURE Dp GREENWAY (NP.)
♦♦ , 2.5 2 a c. / • POSITIVE SLOPE IS MAINTAINED. �QI�
9 ♦♦ 1 BERM SHALL BE STABILIZED AS j / (D O
aarrruuurrrprr•r•• ♦ i� : A FIRST STEP IN DISTURBANCE. is
�\. 0
♦ •• 1 _ PROPOSED RIPRAP �. O O
r DC �.� - - I w/ WIRE SF LINED OUTLET
i BACKIN PROTECTION. SEE' / y
EXISTING SWIM PLAN SHEETS M
/ ■ ■ 1
I VEGETATION DETAILS
W -
L FOR DETA U
- 1
*4� 0 W
♦i♦♦♦ TS �I / i I �l j aIV)
♦ P JOB NO.
t ■ ♦♦♦ f EROSION & SEDIMENT CONTROL NOTES / g 182150
t ♦♦♦ �, i. THE LIMITS OF DISTURBANCE SHALL NOT ENCROACH INTO 0 \
i ♦♦ ♦♦♦ �' THE WESTERN PROPERTY LIMIT'S 70' BUFFER, AS SHOWN. yF, SCALE
♦♦ 2. THE PROPOSED SWM FOREST & OPEN SPACE EASEMENT 1 11=30'
♦♦♦ SHALL BE FIELD SURVEYED AND ENCOMPASSED WITH
♦♦♦ ; ORANGE PLASTIC SAFETY FENCE. / SHEET N0.
r♦ ♦ MATCHLINE, SEE SHEET 6 ♦� / ♦ 3. NO CONSTRUCTION TRAFFIC SHALL ACCESS THE
♦ 1111111s11m11m11m11m11m11m11o11I �00 PROPERTY FROM MONTGOMERY RIDGE OR FOREST LAKES. / - - - - - 5
♦ �II�II�II �IIIIl�1
I ♦♦ ♦
RR
�.• •'� MATCHLINE, SEE SHEETS
�'� �� ,� ,� a ♦•� 1Ilffillmll llmlloll olloll olloll mlIN11olloll olloll 0 ♦ �f�
,'/ \ /', II ♦ - PROPOSED 18" DIVERSION. ST 2 �! r , ♦ CONTRACTOR SHALL ENSURE ♦ I
DO POSITIVE SLOPE IS MAINTAINED. 2. 52 ac. - BERM SHALL BE STABILIZED AS
_ < p A FIRST STEP IN DISTURBANCE. ♦®® \
bbO i
00
PROPOSED SAFETY FENCE, / it ®,0,6,
INSTALL SIGNAND, K KEEP
OUT' ;,. �.
} QUICK SAND, KEEP OUT ,'/ O 1 ® �` /
k7
SCOTT/R.ICI!�LLINS-
Lic. No. 035791 1:,
p 3/12/20�4
�S'IOrrei. E�G�
Ln
i ♦ \L '� PROPOSED SWIM FOREST &OPEN ' g
�♦ \ r-%,� SPACE EASEMENT (TYPICAL) I - ' O U U
PROPOSED LIMITS OF i STz ♦ % U O O
\ DISTURBANCE, TYP. i / O j �� i z r r r
PROPOSED 1 i ♦ DC / O w z Z Z
GREENWAY (TYP.) \ / ♦
PROPOSED LIMITS OF DISTURBANCE COINCIDES I / K I U
/. �' ♦♦ " ,�' ® WITH. SEDIMENT BASIN #1'S PARALLELING SILT ro m N N
'/ / ♦ , ,� FENCE. THE TREE PROTECTION, TREELIKE, LIMITS " Z w N
�\ \ /' 1♦ '' / OF. DISTURBANCE LINE AND DRAINAGE DIVIDE / ,' O Ln
' ♦♦♦ ,' ARE ALL OFFSET FOR GRAPHICALLY PURPOSES. `'
I \ ✓' 1♦♦ " ,' �40p TP TREE / /� / i'/ //� w ~ z U7 Ln
V/ Z
\ ti ' - ♦ ' PROTECTION j 'k , Q Q
r - PROPOSED SWM FOREST.&OPEN- /pp® O. y4 aci 1 �.- /�
SPACE EASEMENT (TYPICAL) i N / PROPOSED / /. k k_ k / ',' (n Ln
/ GREENWAY TYP. / i
( W >>
� ♦ . w
/ I f1 ♦ SOIL-D ♦ y k t_ , , ' w w
I
® '` 0 k
,
k E
J *
n
, ••♦ �
PROPOSED 18" DIVERSION. ♦S �♦
TP ,i CONTRACTOR SHALL ENSURE i ♦ I , - '
/ TREE / d
DO POSITIVE SLOPE IS MAINTAINED ♦ ♦ , / ;' i / i
{\ PROTECTION. BERM SHALL BE STABILIZED AS ♦♦♦ 1♦ y o m o 0
\ _ , A FIRST STEP IN DISTURBANCE. ♦♦♦ ♦♦ yt 00 ®�
00
I W/ WIRE ,' ® ♦♦1 ♦1 PROPOSED 18 DIVERSION. �` ( 'i ,' i i / ` -`� O ti N m �
BACKING F / DC ♦♦♦ B ♦ CONTRACTOR SHALL ENSURE DO ,')i
} 1♦♦ ♦♦ POSITIVE SLOPE IS MAINTAINED. / op ,'_ - ,/ 00
/ ® ♦1♦ ♦ BERM SHALL BE STABILIZED AS / op ' --ss--00
i I ♦♦•w♦ A FIRST STEP IN DISTURBANCE.
/// i ' / ✓ _ i ♦'f.� vim.,('(,
If
40,
PRESERVED STEEP
1 - / - ',', �' ®® I ,' y li II .. I. ✓" , / / .. SLOPES (TYP.) � �
L9
Ch J °
. _ �� � • i /
1�\\ S B # 1 /
SOIL BOUNDARY \\ J
�1 `PROJECT LIMITS /'9 TYP. /
41 5.90 ac.
I (TYP.) ;, a - , l /' EXISTING
VEGETATION
41,
PROPOSED LIMITS OF DISTURBANCE COINCIDES it
WITH THE TREE PROTECTION. THE SILT. FENCE, i �� Y�j/ ♦ / - - I _
TREELINE, LIMITS OF DISTURBANCE LINE, ,f ♦♦ _
DIVERSION AND DRAINAGE DIVIDE ARE ALL ' -/ ♦♦ / - "�
OFFSET FOR GRAPHICALLY PURPOSES. ,
/
PROPOSED SOILTYPE
r
/ ®. ♦ F ® J I 84C
PROPOSED i ® ♦ ,/ ��--- GREENWAY (TYP'.) - ,
GREENWAY (TYP.) / , tf ♦♦ ,r
TS ♦♦♦ 00
®` .. s , Y
1
1010
00
♦ TP
i
00
�
TREE �\ y? 0
♦ �- ,' PROTECT -ION.
PROPOSED 18" DIVERSION.
u CONTRACTOR SHALL ENSURE:\
DD POSITIVE SLOPE IS MAINTAINED. ' I
BERM SHALL BE STABILIZED AS '
, p A FIRST STEP IN DISTURBANCE.
/
- i hh� I ♦ ' w/ WIRE /
SOILTYPE ♦ ,/ SF BACKING
•
/
PROPOSED LIMITS OF i �� Y -
DISTURBANCE, TYP..
/
'��
i
PROPOSED LIMITS OF DISTURBANCE
COINCIDES WITH THE TREE PROTECTION.
THE SILT FENCETREELIKE, LIMITS OF
® -- ♦ i DISTURBANCE LINE DIVERSION AND
DRAINAGE DHIALL AL OFFSET FOR
DIVIDE ARE AL
, , ', � �, ,I \ T5 ♦®♦ /, 'GRAPHICALLY PURPOSES. / �� �� a0 0 15 GRAPHIC SCALE ,zo
,t LIMITS OF DISTURBANCERE A MINIMUM
A ` �i A { / OF 5 FROM THE PRESERVED SLOPES.
� 7� E� I �' �� ®♦ � '� MATCHLINE, SEE SHEET 7
tiOILTYOE
®..
34 C s
� ` F � / 'I i � 4#* ( IN FEET )
1 inch = 30 ft.
Zcyi
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CM 3
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JOB NO.
182150
°
SCALE °
1 "=30' °
°
c
0
SHEET NO. a
6
I _ '
r I.
I �I
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I - I
I,
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/I I
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✓ I
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LOCATION OF PROPOSED LIMITS OF
G RTA-!`0 IiLo DISTURBANC TYP.
PROPOS ONE
CE ENTRANCE (12'x70
■■E --- RACK & DOWN GRADIENT
& SEDIMENT TRAPPIN(
I
\ ` ` •♦O/[
CONTRACTOR
PARKING &
STAGING AREA
LOCATION OF 15cy
DUMPSTER
THE FUELING TANK SHALL BE COMPLETELY SURROUNDED BY A 2'
DEEP, 2' WIDE EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE
LINING, OR BE PLACED IN AN IMPERVIOUS OPEN -TOP DUMPSTER.
THE PROPOSED BERM OR DUMPSTER SHALL CONTAIN FUEL IN THE
EVENT OF A SPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY
IS 10% LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL.
ST # 5
2.42 ac.
e,
WON
,! STREAM,
GRAP C SCALE N TYP
0 ,o� Y _ so tzo \ MI PROPOSED FLOW BARRIER (SANDBAGS,
/ PLYWOOD, JERSEY BARRIERS OR
EQUIVALENT). SEE SHEET 3 FOR 1
\I ADDITIONAL STREAM CROSSING
IN FEET) „�
DETAILS.
1 inch = 30 ft. CONTRACTOR SHALL REMOVE
/ PROPOSED FLOW BARRIER & STREAM
DIVERSION ONLY AFTER THE CULVERT RR
EXISTING INSTALLATION HAS BEEN COMPLETED,
/ VEGETATION ACCEPTED BY VDOT AND THE ESC "I
INSPECTOR GRANTS APPROVAL.
PROPOSED '
GREENWAY (TYP.) -�,
PRESE RV D STEEP 411
/ SLOP S (TYP.) TREE PROTECTION TP I I
w/ WIRE I
/ BACKING. SF ,
�S
.I N / 1 /
A. H / 1 PROPOSED ALIGNMENT OF
' STREAM DIVERSION WHILE USC
CE CULVERT IS INSTALLED-
�
■
DD 1
LOCATION OF
FUELING AREA
PROPOSED CONC. PROJECT LIMITS
WASHOUT AREA (TYP.)
SOIL TYPE
27C
SEDIMENT TRAP #4 TO BE UTILIZED FOR
CONSTRUCTION ENTRANCE WASHOFF / RUNOFF.
N
1
1
i
1
I
1
1
1
1
I
1
1
1
1
1
PRESERVED STEEP
SLOPES (TYP.)
DC
'
CONTRACTOR SHALL INSTAL A
- R/W DIVERSION ACROSS THE
■
WD 1'
CONSTRUCTION ENTRANCE,
�1? NN
•
�
■1
SOIL BOUNDARY,
_. TYP.
■
■
■
SUILTVPL
w/
r
BA(
1�
/
1
I
I
F `
r
SOIL TYPE
34C
t
ROPOSED RIPRAP
AT TRANSITION
0-
SOIL TYPE
34C
{
i
.1 PROPOSED`%
RIPRAP AT tK,
I
1
LLl �
1
1
Q w
1 !gam
t
16'
rn STy
�s
T
Sediment Trap design #4
drainage area (acres) (<3)
1.28
trap volumes:
elevation (R) area (sf) volume(co
volume(cy)
406 552
0
0.0
408 1004
1,534
56.8
410 1556
4,074
150.9
412 2209
7,820
289.6
wet storage
wet storage required Icy) (67'DA)
85.8
bottom of stone weir (ft)
409.0
wet storage provided at this elevation (cy)
98.8
slope of wet storage sides
21
dry storage:
dry storage required Icy) (67'DA)
85.8
crest of stone weir
411.0
dry storage provided at this elevation (cy)
115.4
slope of dry storage sides
2:1
JV
a.' w■ri1'
weir length (ft) (6xDA)
7.7
bottom of trap elevation (ft)
406
bottom trap dimensions:
16'1
top of dam elevation (ft)
412
top width of dam (ft)
10,
top trap dimensions
41"T
Sediment Trap design #5
drainage area (acres) (<3)
2.42
'• """"■'E
trap Volumes:
U1ESi IK STO■WE■
yp,,aF•
elevation (ft) area (sf) volume(cf)
volume(cy)
u
438 1303 0
0.0
kil
440 2595 3,825
141.7
DW STORAGE
N N ••»ws
442 4163 10,521
389.7
444 5685 20,330
752.9
446 7370 33,348
1235.1
AFT STORAGE
loti'E�IDI
rir[a amu pncw[
rnanrn
REV
1
wet storage:
.SEE WJIL 311-1
CRAM[ aaa[GR� cuss [ nww
wet storage required (cy) (67'DA)
162.1
bottom of stone weir (ft)
441.0
wet storage provided at this elevation (cy)
260.5
slope of wet storage sides
21
weir length (ft) (6x DA)
14.5
dry storage:
bottom of trap elevation (ft)
438
dry storage required (cy) (67'DA)
162.1
bottom trap dimensions:
16k 78'
crest of stone weir
444.0
top of dam elevation (ft)
446
dry storage provided at this elevation (cy)
492.4
top width of dam (ft)
6'
slope of dry storage sides
2:1
top trap dimensions
58'x 116'
\, r
CULVERT INSTALLATION NOTES:
'
1. CONTRACTOR SHALL INSTALL AND MAINTAIN A 6' WIDE WITH 2:1 SIDE SLOPES
TYPE B STREAM FLOW DIVERSION PER DIVERSION CHANNEL CROSSING VESCH
' DETAIL 3.25-1 AND 3.25-2 DURING ENTIRE CULVERT CONSTRUCTION
/
OPERATION.
i
2. SILT FENCE SHALL BE INSTALLED ON BOTH SIDES OF THE PROPOSED STREAM
n'-
DIVERSION CHANNEL. THE CONTRACTOR SHALL INSTALL AND ADJUST SILT
FENCE AS NECESSARY TO PREVENT SOIL FROM ENTERING STREAM. RIPRAP
SHALL BE PROVIDED WITHIN THE EXISTING STREAM BED AT THE TRANSITION
'
FROM THE EXISTING STREAMBED TO THE PROPOSED DIVERSION CHANNEL, AND
' \
AT THE TRANSITION BACK FROM THE DIVERSION CHANNEL TO THE EXISTING
i \\
STREAMBED. AN APPROVED FLOW BARRIER (SANDBAGS, PLYWOOD, JERSEY
II
BARRIER, OR EQUIVALENT) WILL BE INSTALLED BEHIND THE RIPRAP TRANSITION.
I 3. THE DIVERSION CHANNEL CROSSING MUST BE OPERATIONAL BEFORE WORK IS
PERFORMED IN THE STREAM (CONSTRUCTION OF DIVERSION SHALL BE
PERFORMED "IN THE DRY").
'
4. UPON COMPLETION OF THE CULVERT CONSTRUCTION AND WITH INSPECTOR
/
APPROVAL, THE CONTRACTOR SHALL REMOVE THE STREAM DIVERSION AND
ALLOW STREAM FLOW TO RESUME THROUGH THE CULVERT.
WORK IN THE STREAM COVERED UNDER VIRGINIA WATER PROTECTION (VWP)
' -
INDIVIDUAL PERMIT NUMBER 16-1133 FOR THE BROOKHILL PROJECT. �
DC ♦♦' /'
//�,
�11�41�IL�II�II�II�II�H�IV�II�II�II�II�II�II�II�IIf j.
MATCHLINE,
�I
SEE SHEET 6
\
\
\
'SOILBOUNDI_ACV
Typ
I
■ \ \. /
�, ■
1 f PROPOSED 18" DIVERSION DC i - - - \ �` / ' .._
SCOTT/R. C!ILLINS'Z
Lie. No. 035791/1
p 8/04/20
&IONeT.
i-
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CONTRACTOR SHALL ENSURE �♦ Fi. / "' ` I
POSITIVE SLOPE IS MAINTAINED. DD ♦ i ;>� f� �.1�111111�11�1 II�I�I -II i' - = u
/ PROPOSED LIMITS OF DISTURBANCE COINCIDES ♦♦ BERM SHALL BE STABILIZED AS i - - '� �� - /' � - - - L
PROJECT / I 1 MATCHLI E U
BOUNDARY I - WITH SEDIMENT BASIN #I''s-PARALLELING TREE �` i - / I II °
/ A FIRST STEP IN DISTURBANCE. �` 1 , `� `\ / ♦ , SEE THIS SHEET °' PROPOSED C °
1 PROTECTION. THE TREE PROTECTION, TREELIKE, ♦ W r
(TYP') SILT FENCE, LIMITS OF DIS,fURBANCE LINE AND / - - ` _ �� /' / / �� I o �6REENWAY (TYP.)
DRAINAGE DIVIDE ARE ALL OFFSET FOR - - /' �� / �I I o I S(::, Y
GRAPHICALLT''PURPOSES.. W O
/J , ♦ / I.
Ln-
/ / �/
' O
/
_ _- 1
I °
� O O E
♦ ,<: A / / 1 v j U LL o
PROPOSED I / .♦♦ ,/ _ EXISTING j �� +�. / / LU U / GREENWAY (TYP.) ♦ - VEGETATION /'
(TYP.) . / OOI LULU
W
--
\ ■ / - TREE i _- / - I ,
Iv ♦ ♦ - PROTECTION LNu o
.• �♦
�r�V
PROPOSE °
D LIMITS OF 1 ".:, ♦♦♦♦♦ �� �/', r / � I >
/
DISTURBANCE, TYP. ■.■► PROPOSED SAFETY FENCE,
`` oo •■■■■■■■ �� INSTALL SIGNS"WARNING / / / / \ i i PROPOSED / C O x
1 e\'/^W' - - QUYCK, SAND, KEEP OUT" I / i
_ ,'I I JI OUTFALL, SEE
bWM SHEETSFO r
�, _ / : �' , DETAILS _~ //_i PROPOSED SWMFOREST&OPEN'TP<:. �- SPACE.EASEMENT (TYPICAL)/U
U F
TREE
'II PROTECTION N-- / // I/I O 2 0
\` Ca,• I \ __ pjyP i /' JOB NO.
0.
GRAIC SCALE 182150 0
�\ C �' �r I I. '�i SCALE °
�� v �,. /�so o is ao so tzo I EXISTING
STREAM i r; 1 n=30' o
MATCHLINE,�� / 7 / n
SEE THIS SHIEET / e / i'/ SHEET NO, n
,'
/ I /.
I_
IN FEET) - I '
��l �II�IIIII'�II�II�II II�II�II 1 �II�II■ V �� I - �j ] m
z ' 30 1 inch - ft. '1
', _ - .�. ,-7�Y�1. PROPOSED LIMITS.OFDISTURBANCE . - , -. , . , . -, ', _ ', ', - -, . ♦ , ',
- - �15 CONCURRENT WITH AND DOES PROPOSED LIMITS OF - - - . �♦
. .436 TW ' , . - _., NOT ENCROACH INTO THE 70' WIDE DISTURBANCE, TYP. ', ', - . ♦♦ 'ySy
442 EG ;446 TW 446 TW 446 TW ♦♦ ._N BUFFER, SHOWN. .TREE - 447 TW' - ♦♦♦ TH OF
446 TW 1442 BW 444 BW 445 BW -
441 TW 440 BW 446 TW 42 EG 444 EG 445 EG ♦ 'PROTECTION Tp _ 460 TW 447 BW -- - ♦♦ f
458 TW ♦ 448 TW. 454 TW
435 BW 460 BW 452 BW.. . 456 TW ♦ 452 BW
448 BW aa8 Tw♦♦ 4s0 BW
o'SCOTT R. LINS'z
435 EG 442 BW� : ♦, 450-BW. 454 TW - ��♦BW 454 TW
■ - -
-----
-
---' ------ -T------
------ ------
�
aaz BW ♦♦♦ as4TW
U L1c. No. 03 91
SF
446 TW
1
-- ----
45 B
ACKING
6 BW
■
0. 18ac. ■
♦
■
_ -.
'w
„off �4.
8/ / 0
446 TW
446 TW
♦♦
��ION
/ 443 BW
'
■
TW=462 BW=y6D
--
-
AL vo%l
0.14ac.
■
470 TW
466 TW 468 TW
-------- ..
-- -- ----
- ♦♦♦
lLl Wmw
'
■
♦
♦
■
460
464 BW
464 BW 464 BW PROPOSED LIMITS OF DISTURBANCE COINCIDES
460 4fi4 BW
-- __ i _
462 TVI - - _ -- _
- -
Z �
J
442 BW
�
■
1♦♦
460 �W
BW WITH THE WESTERN PROPERTY LINE 70' BUFFER.
462 TW 462 BW 466 TW 462 TW -- -
464 TW _.---------
_-______-
�
+
■
THE TREE PROTECTION, TREELINE, LIMITS OF
460 BW ,168 TW 462 BW 462 BW 462 BW
1
■
■
DISTURBANCE LINE AND DRAINAGE DIVIDE ARE
462 BW'
1
♦ 40
43 W
■
i
ALL OFFSET FOR GRAPHICAL PURPOSES.
470 TW
PROPOSED WALL (TYP.) --
W
DC ■
464 BW -
■
�
t
■
PROPOSED WALL (TYP.)
TS
PS
__ _____
■
■
_
; or
,S ■ ■■■ WE
■
-
■
PROPOSED WALL (TYP.)
WALL\(TYP.)
-... \. .=
i
in
in
in
1♦
I
`r�
\\
•:1
■
:
,.
_ /+
PROPOSED WALL (TYP.) / --
j
'
w
w
w
w
•
ED WALL
i
PROPO (TYP.)
-�
TW
■'
444 TW
438 BW
in
4 BWI
�
N
I
■
■
'
ST #1
■
■
'
1.93 ac.
PROPOSED
TREE
TP PROTECTION
GREENWAY (TYP.)
V452 TW
■
■
TS ■
.I 446 BW�
■
I
•
■'',
SEDIMENT TRAP #1 SHALL REMAIN FUNCTIONAL AS
■
444 TW
i
PROPOSED LIMITS OF
LONG AS POSSIBLE, AS DESIGNED & SHOWN.
%
438 BW
DISTURBANCE, TYP.
SEDIMENT TRAP #1 SHALL NOT BE REMOVED UNTIL
■
THE UPLAND STORM SEWER & YARD DRAINS ARE
THE
I
I
•
\
I
445 TW
■
■
439 BW
PROPOSED SAFETY FENCE,
439 EG
INSTALL SIGNS "WARNING
P:
QUICK SAND, KEEP OUT"
1 N
1 452 TW
447 B g
I 1
I �
�
445 TW
■
■
439 BW
439 EG
i
r ♦
r
448 TW
r
446 BW
444 TW
-
438 BW
♦
'I 438 EG
♦♦♦ ST1
4427W
447 TW
436 BW
444 BW
♦♦
436 EG
�♦
440 TW
area*
434 BW
447 TW
- 434 EG
444 BW
•
lil 438 TW
;r
434 BW
r
-' 434 EG 4
47 TW
I
446 BW. i
434 TW
434 BW
434 EG
PROPOSED
EENWAY, TYP.
i
OPERATIONAL & CONVEY RUNOFF TO SEDIMENT
BASIN #2. ST #1 SHALL NOT BE REMOVED UNTIL
THE ESC INSPECTOR APPROVES. ITS REMOVAL
VE SLOPE IS MAINTAINED.
SHALL BE STABILIZED AS
STEP IN DISTURBANCE.�
DD
- - - -- Air \
_ PROPOSED WALL (TYP.) -
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i - BE INSTALLED UPHILL OF THE WALL TO
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1.1 _
LIMIT OF DISTURBANCE LINE', WITH THE, SILT - ■ Z � i �� I Q
♦♦♦♦ I®� FENCE INSTALLED IMMEDIATELY ADJACENT TO ■ "' J_
THE TREE PROTECTION FENCING THE �Ln ' U `� W
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PROTECTION LINE LIMITS OF DISTURBANCE AND I + Q m \ T
♦ ® TREELINE ARE ALL OFFSET FOR GRAPHICAL W ly
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�� BACKING - - -in
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182150
HIn
. I ��""' ,,. , SCALE
�Ali 1 "=30'
SHEET NO.
8
Ali
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A ♦♦ +♦ ' �` PROPOSED SWM FOREST & OPEN '
-/ ♦♦ ♦♦ �' - - - SPACE EASEMENT (TYPICAL)
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PROPOSED LIMITS OF•®DISTURBANCE, TYP.PROPOSED'LIMITS OF DISTURBANCE COINCIDESWITH SEDIMENT BASIN #1's PARALLELING SILTFENCE. THETREE PROT CTION TREELINE LIMITS
OF. DISTURBANCE LINE AND DRAINAGE DIVIDEARE ALL OFFSET FOR GRAPHICALLY PURPOSES.``TP.TREE PROTECTIONED SWM FOREST & OPEN / '� 0.1.4 ac. ♦ O� - - - - �' ' r
\� -/ SPACE EASEMENT (TYPICAL) - 'i A / O♦♦ ®♦ / PROPOSED
% \ / ♦ 00 00♦ �\\d GREENWAY (TYP.) - /
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DIVERSION AND, DRAINAGE DIVIDE ARE ALL o
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♦ , THE SILT FENCE, TREELINE; LIMITS OF
/ DISTURBANCE LINE, DIVERSION AND
,< DRAINAGE DIVIDE ARE ALL OFFSET FOR GRAPHICALLY PURPOSES. "_i I GRAPHIC SCALE
LIMITS OF DISTURBANCE ARE A MINIMUM , /
,r OF S' FROM THE PRESERVED SLOPES. / / / 30 0 Is a0' 60 120
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MATCHLINE, SEE SHEET IO ' / ( IN FEET )
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>COTT/R. CDLLINS�Z_
Lie. No. 035791lh
3/12/20
F
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182150
SCALE
1"=30'
SHEET NO.
9
--- ------ '
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r I _
I 30 ,tf 1
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it
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PROPOS ONSTR CTI N
ENTRANCE (12'x70 / WA H
'r •■,'l�N�■■ CK & N GRADIENT DIVER
r -�& SEDIMENT TRAPPING DEVICE
LOCATION OF 15cy
DUMPSTER
THE FUELING TANK SHALL BE COMPLETELY SURROUNDED BY A 2'
DEEP, 2' WIDE EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE
LINING, OR BE PLACED IN AN IMPERVIOUS OPEN -TOP DUMPSTER.
THE PROPOSED BERM OR DUMPSTER SHALL CONTAIN FUEL IN THE
EVENT OF A SPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY
IS 10% LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL.
..............
SCALE j
( INI FEET )
1 inchL= 30 ft.
0
120
7 / - EXISTING /
VEGETATION
(TYP.)
�
PROPOSED
GREENWAY (TYP.)---�
PRE ER D STEEP /
SLOPS (TYP;) `
TREE PROTECTION TP I
WIRE
BACKING SF
BA ,
� PS
�5Q
ST #4
1.02 ac.
.CONTRACTOR SHALL INSTALL A
R/W DIVERSION ACROSS THE WD
CONSTRUCTION ENTRANCE.
I
LOCATION OF
-FUELINGAREA J
PROPOSED CONC. PROJECT LIMITS
WASHOUT AREA (TYP.)
SEDIMENT TRAP #4 TO BE UTILIZED FOR
CONSTRUCTION ENTRANCE WASHOFF/RUNOFF.
I
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TYP. ----- /� i
434 TW
434 BW
434 EG
•1A � A.
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AS ROADWAY IS BROUGHT TO GRADE, CROWN(
TOWARD EMBANKMENT TOP OF BANK TO ALLOW
SILT FENCE TO TREAT THIS AREA UNTIL PHASE III
STORM SEWER IS INSTALLED \\
I " 0
♦♦ // Imo' �� ♦
♦♦♦• �� i
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WITH SEDIMENT BASIN #Ls DISTURBANCE COINCIDES
PROJECT _ PROPROTEECTION. OSED THE TREEITS OF IPROT�ECTILLELING TREE 9 �
BOUNDARY -- •
(TYP) ON, TREELINE,
j I SILT FENCE, LIMITS. OF DISTURBANCE LINE AND
DRAINAGE DIVIDEAREALL OFFSET FOR j
GRAPHICALLY/PURPOSES, ;
PRESERVED STEEP-
SLOPES (TYP.)
PROPOSED q
lGREENWAY (TYP.)-
-----�
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I � ■
1
J
� PROPOSED LIMITS OFF 1 .* ♦♦
DISTURBANCE, TYP. 41"r■■■■■■■•
I oov�
40,
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TREE ^�
I� 'I PROTECTION00
t7
SCOTT /R. 'SLLINS Z
Uc. No. 035791,a
p 8/04/20 �4
o�S'tnAiA7.
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VEGETATION
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r
/
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/ PROTECTION
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PROPOSED SAFETY FENCE,-
00, INSTALL SIGNS "WARNING
QUYCK SAND', KEEP OUT"00
If
i - PROPOSED SWIM FOREST & OPEN / / I /
j SPACE EASEMENT (TYPICAL) / /� / - t4
.0
'
/
GR W11C SCALE
MATCH'LINE,
SEE SHEET 7 IN FEET )
�, III■II�JI■II�II�II�II�II�II z 0 �II�II■ '� �Y / ;. 0 1 inch = 30 ft.
m o 0 0
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JOB NO.
182150
SCALE
1 11=30'
SHEET NO.
10
PROPOSED LIMITS. OF DISTURBANCE ', ♦♦
�.
. LIMITS OF - - -
. 436 TW � :, , I$ CONCURRENT WITH AND DOES �. � PROPOSED , --- ♦ - -
436 BW ♦ 480 NOT ENCROACH. INTO THE '70' WIDE DISTURBANCE, TYP.. TR E 447. TW' ♦♦♦ - Q�+
442 EG 446 TW .446 TW 445 TW ♦ BUFFER, AS SHOWN C ♦ _ I r'yjv
446 TW 442 BW 444 BW 445 EBW G I 46 �4i0 ,PROTECTION TP ',45 - 447 BW - ♦♦♦ 454 TW
441 TW 440 BW 442 EG 444 EG 445 _ 460 TW -
., 450 BW 448 ♦448 TW.
435 BW 446 TW i I, � 460 BW .452 BW 4Sfi TW 454 TW -- -. - � - _ ._ �i BW 452 BW414
�
435 EG �o� aa2 BW e 48 ew 448 Tw♦♦ 4s0 BW SCOTT R. LINS Z
44 _ _ — _ 442 BW ♦ 454 Tw O --------
-
�vi+t.IRE- ---- " ( 474 4 - - ♦♦ 454 BW ' U Lic. No. 035791,a
BACKING SF 6 B 46 TW ■ IP 1 - 470 .0 Q'
446 TW 446 T _ 1 g /I"(�O I ! I 1 _ I -_47Z_ - W Q��
443 BW�/ / _ 0 ♦.. _ ESL ONAL SAGS
D IN
-- -- - -_ - 470 TW �- _ 6 _
----1 _ _ 466 TW 468 TW ----47 - -
/ _ I 4 1 � 1
_ 4 I - � _ ----- 464 ♦ L�
1 'I_- 11 1 462 TW 464 BW 464 BW 1 464 BW _ __ 46 45 ♦ W W i
I
S PROTECTION IN ET --- 1 I I 6 I
- -I ■ IONI i I - - � - I
_ I-
I 464 T �_
448 TW - -HALL HAVE C^, PROPOSED LIM OF OIS7URBA7VCE 0_II4C_IDES -_ _._ _ V
462 TW — - _ _ _ _ - ti442 BW I
■■if■ --_-- 460 BW WITH TH.E WEST RN PROPERTY LINE BUFFER.462 TW 462 BW 466 TW 464 TW 462 TW - - ��460 T 464 8Vv1 THE TREE PRO CTION,TREELINE, MITT OF 460 BWI 462 BW 462 BW54_____U /460 BW ia
♦ III4 ________■■ ■ I uuuuu ■uuuu� ■uuu■■ ♦ --- iI DISALL OFFSET OR GRADHINAGE VIDEARE I - - ---- - - - - - - -- Q
III III 462 ew- / -- --- ------
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36�� I � I 464 BW � ('
I I I I
PROPOSED WALL (TYP.) � TS i,. i i I PS I, i `�: �' I _ - --- � ■ I� � � ,
_ I
PROPOSED ALL P. w n I I _ 1 I i _ -
--_ " ROPOSED WALL (TYP.) �,\ - a �� pI E- h- I�-
1 ■ __ _ l` III __ �.. _. I J II I _ _ 1 I_ _-. II ___'' i PROPOSED WALL (TYP.) r ♦ lu w w w
i u I -
N 7.55lac. Z z Z
I I PROPOSED WALL TYP. �\ �,� 1 _ �.. �� -_!I I ,,.I .\.\ to I ♦ r � f F
— - 1
( )_� � 'c PROPOSED WALL (TYP.) I I - - - � O O O -
_� I)
--.... I ._
444 TW i-_-s--I /
sI 11
-.j V �A 1 PROPOSED
445BWa� aV O O 0438 BW GREENWAY (TYP.) U U U
47
_ - - -
—177
If
7f
■ - �. �� a — �� $60 � � � 41 o a w w w
s INLET PROTECTION a "
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{ / / I.--- V. w-t-� w�w-.� wow _ _ - ♦ BAGKIN SF z Z Z Z
p,
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PROPOSED TREE w � �.
GREENWAY (TYP.) .,.■, TP PROTECFION —v:� 'a.) - - - s6• -1 _ I -1 w 5 >
452 TW ■, �w� - I TS 1 - f -; li
446 BW -�. I —w I, - I 1 h� -°' 1 \ -._.
w
I / • SEDIMENT TRAP #1 SHALL REMAIN FUNCTIONAL AS - i', � • _
444 TW PROPOSED LIMITS OF -� LONG AS POSSIBLE, AS DESIGNED & SHOWN. N I �I ` III I �I - -' h - ail ■ \�~+ `"`w�
I 438 BW � - � I ', SEDIMENT TRAP #1 SHALL NOT BE REMOVED UNTIL i I _ DC ,�. I I � / � - -
■ 7 TE UPLAND STORM SEWER & YARD DRAINS ARE L--- II _
■ DISTURBANCE, TYP. OPERATIONAL & CONVEY RUNOFF TO SEDIMENT �� I EI I�� TS ♦♦♦♦ i
- II I' •
I '' •_ - BASIN #2. ST #1 SHALL NOT BE REMOVED UNTIL ';. I I . • `- - - _ __ -6 �462 I
445 TW PROPOSED SAFETY FENCE, �/ INSPECTOR APPROVES ITS REMOVAL. N �hti
■
I I
I ESC IN
INSTALL SIGNS WARNING /[
I
lil 439 BW ■ �".� :. - � I THE --== � I 4 \
439 EG ■ I _ 'I ♦ - w N N N
D, KEEP OUT "� w�I
I 452 TW a ry i QUICK SAND, - If-'_r ,,. 1. II - I ', I - . / 1�454 �� ,' / ♦♦♦♦ _ PROPOSED SAFETY FENCE, ¢ ti .N-i N o
F-.--, I I. -. I I 'I� �: ,�h _ - / ♦♦ _ --- " INSTALL SIGNS "WARNING �\-� N m ko m
- I I ) (Id p
447 BW I r / " ♦ - - _ - QUICK SAND, KEEP OUT"
'ICI _' �� - _ � - -
'_ PROPOSED 18 DIVERSION. _ - ---= - 1 45 ♦ - - i-
4 8 -� - - -�� �_-
_ -- _
445 TW- CONTRACTOR ALL ENSURE :462 ��
439 BW _ -- -i I POSITIVE SLOPE MAINTAINED. _ .------- _
I 439 EG �- '� II - _,. - _ IZED AS 1 �, _ � - - - - � 454 _ --' ■
__
'' _ A FIRST STEP IN IS-TURSAN I +
I .I ■ I - - BERM SHALL 8E ABIL - b0 _ I — 462
6 45
I WITHIN THE
446 BW i s r 0
�� S�OTPRINOF IMENT TRAP �- T --��- � \ \--_- - � -
444TW ■ 4 - _ TS
_I. #i SHALL BE INS ALLED UPON T .. •° � �_�. _- ■
448 TW '�I �,
I -
.I I■ �� 'i'I THE TRAP' Attu
438 BW I■ p 1
�■ /
-- - _ w 438 EG 7 w ` STi -,-- - w ,
I I ..
436 BVII BW
'.�� • / k� / C� �
- _
w /
442 TW �
. II 43 I !♦ ___' ` I ; - - -'-- - -- � w w w w. w w w w wow F i � (V
440 TW
44
k
s
434. BW 447 TW
434 EG I 444 BW
I " . ; w = -'__ - TS - - w ,\-- °' I Q♦ STREAM,
i
438 TW I ♦ -
434 EG II 447 TW ♦ ��// / w -_ •• ♦♦,, P7,♦ - S` = -
446 BVy �" / - ♦♦♦♦♦ %i D�.
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V
w ♦ �� --- -
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434 TW 1 w ♦♦♦ r -ice a■■■■■ u■■I■■ ■■♦♦S 1
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�34 BW .' w N/ ♦♦♦♦♦ � � ♦ ..�:., � 454 4 ♦ '' l � ♦ I I I � i TI
_ FI /
434E t% :`- • /. / ♦♦♦♦♦ f�� i♦♦♦♦♦♦ _ _ - - -♦♦ f u+ III♦��j -7 twn
r / � _ r
:gypov
/
w .w �'"� /'�i ♦♦♦ . - — 4p48
W447
GRAPHIC SCALE 30 1530 60 120
U
Y y/
♦♦ ♦ . /"" %' / / ♦♦♦ ♦♦ � I H �� ' ■■ F fl. I __ �k .■, it I
`
- -- ~J
TMMMjJ w GREENWAY (TYP.)
PROPOSED IN FEETTW=448
—
♦♦ f ■ BW-446 /k 1 inch 30' ft.- - ✓ ® < `
. ,%-�,/ 1♦ i / \ i' I � I ■ � ... - L� , k e xF k t k I/ - - _" � �'
PRO '(., "/ •♦ b, --_.-_ i Ii POSEDSWM FOREST &OPEN. , k. '' ` k �I - ®.. LLJ
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w ■
ST #
I
j _ - - SPACE EASEMENT (TYPICAL) U
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e ■ -
i r
• 441 .. •.:�'" � %" 1.63 � � ,•' '� ) f -'_-i `- --'0 '�- ' '- �■ _-.=.-, � IN ET � �' � I� � ,' � � � - ..: ., .I- _e k .. .: - - I � / ` � _.74 1
w/ ■ ,�� ♦ / 1� I .. P OTECTION IF _.� / �. PROPOSED WALL. ADIVERSION SHALL k 'k k/// /. - �" 111, /^, Z
V
l - LLM l 'u f IXP ♦• � , � • ♦1♦ \ "P. �. \ I I I N __ r ■ I BE INSTALLED UPHILL OF THE WALL TO ' � `. k:. ' , k ` / I, - Z _ Y
' mJ �/ ,, �\ �--___ �_1 ,II ,- / \ ♦6 a ( - - : i. .TP - DIVERT RUNOFF TO SEDIMENT BASIN. 1. E.Y. -� / O
1 - = i f .. ♦ / . r s.,.. I_ '`- --` I ) / .;, i ■ t - TREE - � - k , <. y, / ui
■ ♦1
■ ti ♦ / \ r ■ aaa��■__ PROTECTION �O
- Q W ♦ ♦1-
■ O
- � � \. x ; .. ♦ 1♦h'L ALLOW PROPOSED STORM SEWER ,: '` ,��-. �/ :e•,. F � � . `� N I • I 'I ' TW=450-
' ■ ,y TO OUTFALL INTO SEDIMENT �' �. ` II �'r. - --=_ / ..■ 454 L BW=446
ul J uj
� • TRAP #6. UTILIZE STR 410 � d' "�,.:.. ��.,� � I /�' � `, -.- �- / � ..� ♦♦
(RIM-440.90) AND OUTFACE \ �' / -� � � I ✓. � w/w� / ♦ /- � / / \� `. u'♦� � � _ �� ', � � dj /,.,// = rl �\ � f d F = i
-- -- - + • PIPES TO OUTFALL SEDIMENT % %,%' " / 11 i; ° - r ♦♦ - \ _ i ,: W r /
TRAP. SEDIMENTTRAP STONE v �I i w/ ♦ ♦♦♦y - - �_ `� .� LL°I W
- -440_v • WEIR SHALL OUTFALL INTO THE / Y % ♦ . j ♦a PROPOSED LIMITS OF DISTURBANCE. THE TREE _ - ; / NN c
' ��\.,.' �\ ■ / a `{ i / / /♦ '�:�... h, ♦ �'e.. y I . PROTECTION FENCING SHALL BE PLACED ON THE. - '. t. ;' / - -.� . � = z L.L -
i
r STR 410 UNTIL POND MAY BE Ye„ /" / /♦ /`; ♦ ,V I : - - f / i - W s. - i
\'. '" �, ■ REMOVED AND UGD INSTALLED ry,.\.. -<.., \'.,. w i - - i ♦ # / /� 9 ♦ �� I LIMIT OF DISTURBANCE LINE, WITH THE SILT - / � I, Q
\ / +�- �� ♦ - �` > ♦♦ c I., -FENCE INSTALLED IMMEDIATELY ADJACENT TO � \ � ' � �' � �
i UPON INSPECTOR APPROVAL;;, > / /; ^ 6 ♦ °� I� - 2
■ - h ♦ THE TREE PROTECTIONfENCING. THE. _■ '�
_\ .,. ■ i SEE SWM PLAN FOR OUTFACE �' ` -
/ 'a. o ♦P -DIVERSION, DRAINAGE DIVIDE, SILT FENCE, TREE. U ?< i' -- ---- ----
Wit. ♦ ,/ ' ` ■ DETAILS. ;z ✓ ,!'� / -.- - / / ♦ ° I.� I ♦• Z i _ t
/; ♦... �, ■ I T' " L / ��- °a, •+ / ��' ♦ ,P �I PROTECTION LINE, LIMITS OF DISTURBANCE,, AN-
. J �.-: �� 4 \ ♦ �' I TREELINE ARE ALL OFFSET FOR GRAPHICAL
./ >� - t f
,' � �'...� .. ♦ �., - -PURPOSES..
1• 4 // , SF�I W/ WIRE _ �� ♦ ,� I -
Y®... ♦ / • / - �/ y / / - ♦1 ®:. f/ BACKING
�"- � ♦ STR 410 (RIM=440.90) V ♦ � ' �, ��-
TO BE INSTALLED WITHOUT �;, ♦ ♦ f� / -,; �/ //1• f II Q
v � I
TOP IN PHASE III TO OUTFALC �.A ♦ ♦ ■♦■■�7■• V -. 7/ �. / 11 e� �� - - :__. ___ __ �- ---.---,_.-----.-.--
BED IMENTTRAP #6 ...� ■■ I '< s / - -
♦rt.A �f " /,� / �♦ • /.. , , ,y' 1 PROPOSED �
♦ A ,� , l I /.. 7 / - ♦ GREENWAY (TYP.) - N
° I - sy EXISTING
VEGETATION
�� �\ �\ `,,,\ � .\\ � �- I �' � vy / _ / �/ •;'� "tea, ♦♦1 ppq % � / (TYP.)
` \ ♦
�,.. �.;:r, �, \/� I.. ,I I�_ // // h ��� ♦♦♦ a 1 �C ®�/ BA KIN SF - 0 2
_
�� ♦ / �V _ °, .yam '.e ♦ `, ♦ U)
� JOB N0.
�� ♦� \ \� �� :��� 5 PROTE P _ �� _ , �� I - 182150
/4 \�
SCALE
- 30'
" _ _
I
��� ♦♦ • ♦ ��, �v P �\ �. A A� MATCHLINE, j q
- ♦♦ L �. �, / A ; SHEET NO.
SEE SHEET 12
lm1 I■II■ ■'II■ I0 Rl I ,r
�"/ �� _
I, Iyy
• \\ MATCHLINE, SEE SHEET 11
f � I �..N„ � o' , . _ � ti u N n � li Il�ll�n�l III■ ■II■ II Fl 11 � ,� �
o z� p
� � �SCOTT R. LINS'�
440 �, "V �v s /� U Lic. No. 035791
8/04/20��
r
�\
0.21 ac. �� v� � �V A / � ilr .'ice ���1, / `t, / I ', ' � ', � _ _ � i'g�,jONAL
I `
i
\ • \
/ ; � ♦��, � °_g 1P. ��'\�.�� � T's
1 `
' / ♦ ♦ � � /` - -G op
40,
U) V) V) to
PROPOSED SWM FOREST .&OPEN �� / � � z z
♦ti .. ♦1 _ a r .; / ,� ®� SPACE EASEMENT (TYPICAL) - / O O O
%/ PROPOSED LIMITS OF 6 ♦ ♦♦♦ \��.'�(—
/ PROPOSED A DISTURBANCE, TYP. i ♦ d ♦♦°'.. /'\/\ h. _'. C / ;�: / 0 Z
GREENWAY TYP. r ♦ vs, p \ .\ / B �_ / F Q �
/ / 1, /7 ♦ / -'� P �� �/ 5 \ i ,� PROPOSED LIMITS OF DISTURBANCE COINCIDES / U U U V
_ �' p � ;' � ♦♦ q' �kgo t WITH. SEDIMENT BASIN #1's PARALLELING SILT / V f M 0 o 0
/ hi .� ♦i /r' / r ,'/ ®. FENCE.THE TREE PROTECTION, TREELINE, LIMITS
/ � - /' -:� ♦ _ �- o� ' / � OF DISTURBANCE LINE AND DRAINAGE DIVIDE
\� // r N ♦♦ , _ I ARE ALL OFFSET FOR GRAPHICALLY PURPOSES.
/ yu K K of
��\ i r ♦♦ 5 ,.' / /'' TP .TREE _/. /A W U) m cn to
�. /,4I { rr. ♦♦. /f` . - ,i �,�Ix �� /'. ®. PROTECTION v' a' QJ g z z
/PROPOSED SWM FOREST.& OPEN Z 0. ac. ♦♦ 43$ i�/ /
7 O O O O
� SPACE EASEMENT (TYPICAL) i � G ♦♦ ' �� ' S V I� PROPOSED �� � /, � � �
/
/ / ; ♦ r ♦♦ / '� \ `I\ .GREENWAY (TYP.) / W w > > >
E
V
`
J
/ I w -
w I
/ as T / � /'� :• ✓ I \ /" � �' �J I TREE ® _ '
PROTECTION / / of / / .0I - / . N� 1 w rn
o 0 0
' W000000 40
W N N N
_ w WIRE
Ftea,,
BACKING . �'I O DC
i Int0 co
20
Alos
v✓ .l P -"
INLET / /' 'I v, _ PRESERVED
SLOPES (TYP.)
PRF}T
a fI \STEEP—
,ECTIOiV, �
- - _ -
PROJECT LIMITS
1
y' a
' (TYP.) // ® '' �' ! / // 'II \ I./ / / EXISTING
VEGETATION ('7
I�i (TYP.)
i
/ I
n /
/
/ � V 1
', �'`- — _ d Mtn / ..� Q
I4/ N
PROPOSED LIMITS OF DISTURBANCE COINCIDES / �� 't // / /. /
WITH THE TREE PROTECTION. THE SILT. FENCE, / '/r _ / A
TREELINE, LIMITS OF DISTURBANCE LINE, / j /\ / ® �T' �% /
DIVERSION AND DRAINAGE DIVIDE ARE ALL '� '� F / / �^ya /� I - / Y / / I-Ll I > O
OFFSET FOR GRAPHICALLY PURPOSES: /
' a
p r r
I
i I� �"..� ' ! ,,7.24Y al.• n*,... /__� PROPOSED i r/ �� I J Z
PROPOSED �� r ��� Ili' /� ':� Y - 1 I O
/ y,✓ c. // s GREENINA TYP. -
GREENWAY (TYP.) CW =0.56 >~ / �./ v U) ���//V //
/ ® k//
J
TS - % �' /
5 i
s r
/ ® `� r =6.6 min. � � � , ,
Z
LLJ
® �'
TP
00
ti
?`
r ff
�7 '�/ l.. .yJ / .PROTECTION v_ % // j-.if ) A Cx
:( TSLu
( 1 —
cn J
Lu
INLET SF W/ WIRE '
IfI e co/ PROTECTION, ' _/' y Y /. BACKING. - �� \-'. I r'/ /%/ , ui W
W W
/ TYP, / /
h /
Ld
CD 0
ti
l JJJ
grr.
I /
PROPOSED LIMITS OF/ I ' •, /'' f ' I O
DISTURBANCE, TYP. / ® <' — -// I N
/
/ / I
r
PROPOSED LIMITS OF DISTURBANCE / " / /f
COINCIDES WITH THE TREE' PROTECTION. / - f )F"� .
' / ,�! � � / � JOB NO.
0� /� THE SILT FENCE,TREELINE; LIMITS OFDISTURBANCE LINE,
/, DRAINAGE DIVIDE ARE AL OFFS AND ,' ,'' I 182150
® Ts PURPOSES. GRAPHIC /- / % i GRAPHIC SCALE
/ ( /1 -'��, A ! /! LIMITS DISTURBANCE ARE A MINIMUM �'
1 SCALE
ji / �I - 30 0 15 30 60 120 1 "=30'
0 OF 5' FROM THE PRESERVED SLOPES.
® � 111011 N11011 NJ 1111NJ 10 110 110 11 N11011011011011011 NJ I I I SHEET NO. N
MATCHLINE, SEE SHEET 13 ( IN FEET )
1i 12
/ 1 inch = 30 ft.
i ♦r'„'�i♦I�JiK� ;1
C SCALE
,♦ wa.`�' ���
I �
I' I
�� \. �i �,�1,► D �,
=i
oil
IAFEET
30 ft.
•
MITT/R. Cb'LLINS
Lie. No. 035791 n
8/04/20 rA.
z - - I / y - - 01
EXISTING I < �, , w_
.� ,.:
VEGETATION
TYP. R
I ILk
�
THE 6 MOST DOWNSTREAM INLETS ALONG STELLA LANE LOCATED PROPOSED •■� .� -
UNTIL THEIR UPSLOPS (TYP.) GREENWAY TYP. y m _ i
AT THE LOW POINT SHALL REMAIN BOARDED UP & WA TIGHT (TYP.)
LAND AREAS ARE STABILIZED & THE ESC --'�
PRESERV D STEEP
INSPECTOR APPROVES THEIR OPENING. SEDIMENT TRAP #3 S TREE PROTECTION TP
DESIGNED TO ACCEPT RUNOFF FROM THESE AREAS & THIS W LL / ■ �' ./� ��//.-
' REDUCE THE RISK OF SHORT CIRCUITING DIRTY RUNOFF. w/ WIRE SF - PROPOSED SAF
FENCE,. 442 / ' 14 rn ar
- - / �� �_ INSTALL SIGNS 1.63 ♦ I- H- H- I--'
LOCATION OF„ PROPOSED LIMITS OF �� y`�. �- " w I < g "WARNING ��� ♦♦♦ Lu
TTIES DISTURBAN TYP. / ♦ , \ QUICK SAND, KEEP i - ♦♦ � � �
PORTA-PO - / I ,..i OUT" � � ♦ f
t 1 = La�y ♦♦♦ O O O O
PROPOS ONST C-1 N
y}
—I CE ENTRANCE (12'x70 / WA H / / +''' U a AL O O O
RACK &DOWN GRADIENT DIVER- �%� 43 - � ,�i W ,, ♦ �v` o� U
& SEDIMENT TRAPPING DEVICE /� . '. / U E rn o 0 0
ii ,
♦ _ •�� �• _
44p
/ ♦ Z N O
• - /
i
i
Lu
�. -'-_-- O - jai - ■■■ ''
J N a0 oD
•' � 44o-u � r F w w w w
sa Rif■ ea■■�■■■ r1■, _ -�.�. vi.
T
H
� :..• �� n
--�. �. -- - — .LTD -- _ — - - — '� 1 d / � � '' ■
r/
♦ �_—PROPOBE w w w w __ - _ _ • L.., �` \v . ' i ( 1
45 (i W w > 5 5
w � ■ w �
— w - ■
♦ 1 w 4y
� ♦ CPARKING & � `" w \\ �p " �♦ ■ � �
`�
STAGING AREA ----- _ - _ _ _- _ - = -. ■. - - - - -- - - ♦�STR4 0 RIM=440.9\ ♦ ■
�Y ♦, 1,)
♦ �-� _ � --� — _ '` � TO BE INSTALLED WITHOUT \ ,.. \ �■■ ■ � II - --
i ♦ -- D C
■
TOP IN PHASE III TO OUTFALC �� \ � ■■� I
Lk
_ _-----__ --- NTRACTORSHALLINSTACLA
P
■ 1! - k4p ♦��DI PROPOSED
\\
COA � � SEDIMENT TRAP
R/W DIVERSE ION ACROSS THE �D ■ I _� -ice.•. ♦�� v RIPRAP LIN
ONSTRUCTION ENTRANCE. s = ; P S. LLVAYC RE
t 5. \ -
Sediment Trap design #6
-- — � -- - ` 'f � � � � drainage area (acres) (<3) 1.63
0 0 0
♦ - '•. °- ... ... �, •\.. a uesrasTarewrw _
♦t - 45 ro ..: , „ .. _ ♦♦ _ .... / -� �m 1 i. ` \G\ I vabon (ft) area (sq wlume(cQ volume(cy) ° o. r,�' n�i o
O L .w.ac J
♦♦ . ° /i`� s • ' _ \ i 436 80 0 0.0 r_1 O .� n�i CD
--LOC�7ION.OF 15cy ,._ ■■ 2p !/ Np Aa 438 361 407 15.1
♦ k - onr stance - r
LOCATION 0 454 ♦ DUMPSTER ---- -- > J-, ♦ / +�
1 FUELING AREA ♦ Ir3o / �� I �� 440 902 1,630 60.4 "
♦♦♦♦♦ _ ' • i s ♦ - `� : 442 1614 4,111 152.3
♦♦♦♦♦♦1♦♦♦♦ PROJECT LIMITS ;'_ �r� DD �`"�,��. 41p �. i" ��y vo ♦\�V 'v� �� 444 2427 8.125 300.9
y
i, c v `� "� rtrol aarx
♦♦♦♦ BACKING SF w/ WIRE wet storage: s¢ run 3.13-1 �.w.wii cws r R~
♦♦ ■ '� k ; ` ♦', A wet storage required (cy) (67'DA) 109.2
♦♦♦ - i / i v ♦ ♦ ♦ L�.. bottom of stone weir (ft) 441.1
♦♦ ♦ ♦♦■•
THE FUELING TANK SHALL BE COMPLETELY SURROUNDED BY A 2�♦ 1 � Opp a �' � � , � �\ wet storage provided at this elevation (cy) 109.2 �
DEEP, 2' WIDE EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE ♦ o� '� o' ,' Avv slope of wet storage sides 2:1
L9 <
LINING, OR BE PLACED IN AN IMPERVIOUS OPEN -TOP DUMPSTER.. ♦♦♦ ° o ,� �� \: \ weir length (ft) (6x DA) 9.8 (�
THE PROPOSED BERM OR DUMPSTER SHALL CONTAIN FUEL IN THE
♦♦ ♦ / /' - '� \— dry storage: bottom of trap elevation (ft) 436
EVENT OF A SPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY ♦ ♦♦ \ 1 / i1 ��� \ I M
IS 10% LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL, dry storage required (cy) (67'DA) 109.2 bottom trap dimensions: 12X15' M
♦♦ ♦♦ / - \� 440 crest of stone weir 443.0 top of dam elevation (ft) 444 IN
♦♦ ��1�141♦♦ /' - dry storage proNded at this elevation (cy) 110.0 top width of dam (ft) 6' 4
0
♦♦ /' - - , slope of dry storage sides 2-1 top trap dimensions 45)03' co
' � � � ' �II�II�II�II�II�II�II�!I�II�II�ll�ll■Il�ll�ll�ll�llf N
MATGHLINE, / O Q
SEE SHEET 12 CnN
J
s
TS o W
/ PS
ry
1 PROPOSED LIMITS OF DISTURBANCE COINCIDES PROJECT (/ .WITH SEDIMENT BASIN #1's PARALLELING TREE / i - - \` s �` - '/ 06
BOUNDARY PROTECTION. THE TREE PROTkCTION, TREELINE,
(TYP') .SILT FENCE, LIMITS OF DISTURBANCE LINE AND
DRAINAGE DIVIDE ARE ALL OFFSET FOR
GRAPHICALLY/PURPOSES.
1 W ( ) —
v
PRESERVED STEEP ,' O
SLOPES (TYP.)40,
s
\
y
-/ -- PROPOSED /f EXISTING _ ' w
Ul
GREENWAY (TYP.) I , i _ _ _ VEGETATION - ' W
,I
® >�, _ U J =
TREE _ , /
\TP
PROTECTION w
J
\ III PROPOSED LIMITS OF _ O
I
DISTURBANCE, TYP. /�`
00, PROPOSED SAFETY FENCE, � F/ , []
INSTALL SIGNS "WARNING � � - � .�, � �./ / I � N
400
ny ~ �® i PROPOSED SWM FOREST &OPEN r F
SPACE .EASEMENT (TYPICAL) .4f
U H
-li TREE I ti / ' rw-, w
I I PROTECTION - O
Ln
_ �\ I? * \. - ,, / ✓ � � JOB NO.
400 s 000' / '10# 182150
! I
GR �PR�TC SCALE SCALE
V - . - v�� 30 0 15 4030 B0 120 { I,_30'
SHEET N0.
( IN FEET) 13
LII�'ILl17ILlI'� II�II�I�II z ■II�II■ w 1 inch'= 30 ft.
\
% q • PROPOSED SAFETY FENCE, SEDIMENT BASIN #1 DETAIL
/ q j INSTALL SIGNS "WARNING SCALE 1 "=30' Sediment Trap / Basin Subarea Summary
QUICK SAND, KEEP OUT" _
♦ _ � r® ; Phase Phasell Phase
♦ PROPOSED �♦ N
i r ♦j .TEMPORARY
DIVERSION, ♦ /
TYP. - - • ;
PROPOSED 30' WIDE GRASS
LIN�D EMERGENCY SPILLWAY \
i CREST EL€V.=383.00'
r
racnity
Area, aG.
Area, aG.
Area, aG.
Sediment Basin #1
5.90
5.26
7.22
' Sediment Basin #2
3.06
4.31
7.55
Sediment Trap #1
1.58
1.93
1.93
Sediment Trap #2
2.52
2.91
-
Sediment Trap #3
1.18
-
Sediment Trap #4
1.28
-
Sediment Trap #5
-
1.63
'Sediment Basin #2 is designed fora 7.55 ac. subarea. This
subarea takes into account the removal of sediment trap #1 &
® y ♦♦ matches the final SWM design acreage.
40
q s`o �..■■■.■■ •
i
h � 40
q PROPOSED
®� .BAFFLES -
^ ® PROPOSED 048" CL. III RCP STANDPIPE TO -
%� •,�- / - SERVE AS RISER. RISER RIM ELEV.=382.00'
IV I j w/ 6" DEWATERING ORIFICE INVERT AT
379.63. TRASH RACK REQUIRED AND SHALL _
INCLUDE ANTI -VORTEX DEVICE. /
p'
4 / Sediment Basin Design #1
`� drainage area (acres) 7.22
\� basin volumes: (using T contour intervals)
�� elevation (ft) contour areas volume c volume(cy)
- 'FLOODPLAIN, ' ��, � �, O (so (00.0
PROPOSED TYP. O 376.75 3730.0 0
GREENWAY O / 378.00 4362.0 5,052 187.1
n i (TYP.) 0 380.00 5456.0 14.850 550.0
4 382.00 6650.0 26936 997.6
y` l
` 384.00 7944.0 41 it l 1637.4
1 k
w 1I1I
STREAM LIMITS, j/ e tt�� /E / - wet storage:
•. - - TYP. V)I, / ` k / wet storage required (cy) (67'DA)
oil,
I �\ �Ik' ,� / r wet storage
orifice elevation (ft) 37
) o � \11 � �� wet storage provided at this elevation (cy)
- �' / 1 available volume before cleanout (cy) (34'DA)
PROPOSED RIPRAP LINED. - -!� j; � ,� � /�� cleanout elevation (ft) 37
OUTLET PROTECTION. SEE SWM -� ,' / / / ( distance from cleanout to orifice (ft) (> 1')
DETAILS SHEET FORDES)
i INFORMATION d storage:
ge
dry storage required (cy) (67'DA)
principle spillway crest (ft) 38
dry storage provided at this elevation (cy)
diameter of dewatering orifice (in)
diameter offlexibletubing (in)(onfice+2")
r / �
/ / , runoff
i r
C (use 0.45 for bare earth)
� � � tc (min)
; 1 2yr 4.8 Q 2yr
1 25yr 7.0 Q 25yr
�' principle spillway:
�� I available head (ft)
I - �^ ♦ diameter riser (in)
i
spillway capacity, Qp (cfs)
00 00 diameter trash rack (in)
barrel length (1) 1
head on barrel through embankment (ft) 1
; 4 diameter of barrel (in)
mmmmmmm
r448 Rim
I
PROPOSED 048" CMP TO
SERVEAS RISER. RISER -
RIM ELEV,=437.25' w/ 5"
_ DEWATERING ORIFICE
INVERT AT 415.82'.
BAFFLES
I
SEDIMENT BASIN #2 DETAIL
-'s SCALE 1 "=30'
1 i
AT
• 1 �
1♦ \
A -� PROPOSED SAFETY FENCE,
INSTALL SIGNS "WARNING
QUICK SAND, KEEP OUT"
PROPOSED
GREENWAY
♦♦♦♦♦♦♦ PROPOSED 141,83' OF 024"
III
♦♦♦♦♦♦♦♦♦♦♦♦♦ PERMANENT
IOL 416R )P
♦ f/
PROPOSED -25' WIDE GRASS
♦ POS EMP RY LINED EMERGENCY SPILLWAY STREAM
ERS , TYP. - -- ---. CREST ELEV.=438.25.. LIMITS, TYP.
SPILLWAY SHALL HAVE 4:1
00 00 00 SIDE SLOPES
DESIGN NIGH WATER
�+•1 IZS-YR STORY arv.)
03'
uw. T.a^
DRY • STORAGE T
WEf STORAGE _.
sEOINon Clrw MW
( TO M CYOAAC EDUCED
NM rWSAALWAT CREST OF EMERGErKY'
Z"T1RNT gILLWAY
wuR cREsr
o �a N0
484
design high water
383.00
9.63
top of dam (ft)
384.00
484
top width of dam (ft)
10.0
245
bottom of basin (ft)
376.8
8.30
approx. bottom dimensions.
71'x75'
1.3
upstream face slope:
21
downstream face slope:
3-1
484
baffles.
YES
2.00
length of flow, L (ft)
85
514
effective width, We (ft)
78
6.0
L / We (baffles required if < 2)
1.1
8.0
collars:
YES
depth of water at spillway crest (ft)
5.25
0.56
slope of upstream face (Z1)
2
6.6
slope of barrel (Sb)
5.75%
19.4
length of barrel in saturated zone (Ls)
40.91
31.1
number collars required
2
dimension of permanent collars
4.0'x4.0'
1.00
emergency spillway:
YES
48
required capacity (Q25-Cp) (cfs)
0.0
40.0
bottom width (ft)
30
72
slope of exist channel (ft/ft)
5%
21.7
minimun length of exit channel (ft)
15
2.00
crest of spillway (ft)
383
24
Sediment Basin Design #2
drainage area (acres)
7.55
basin volumes: (using 2' contour intervals)
elevation (ft) contour area (s0 volume(cf)
volume(cy)
434.00 6600.0 0
0.0
436.00 10163.0 16.635
616.1
438.00 14375.0 41,052
1520.4
440.00 19443-0 74,743
2768.2
wet storage:
wet storage required Icy) (67'DA)
dewatering orifice elevation (ft)
43,1
wet storage provided at this elevation (cy)
available volume before cleanout (cy) (34'DA)
cleanout elevation (ft)
43�
distance from cleanout to orifice (ft) (> 1')
dry storage:
dry storage required (cy) (67'DA)
principle spillway crest (ft)
431
dry storage provided at this elevation (cy)
diameter of dewatering orifice (in)
diameter of flexible tubing (in) (orifice+2")
runoff.
C (use 0.45 for bare earth)
tc (min)
12yr 4.6 Q 2yr
1
125yr 6.7 Q 25yr
principle spillway:
available head (ft)
1
diameter riser (in)
spillway capacity, Qp (cfs)
diameter trash rack (in)
barrel length (ft)
141
head on barrel through embankment (ft)
2:
diameter of barrel (in)
NOTE: ALL TRASH RACKS REQUIRED ON ALL ORIFICES. ALL TRASH RACKS SHALL BE PROVIDED AN
ANTI -VORTEX DEVICE.
Sediment Trap design #1
drainage area (acres) (<3) 1.93
trap volumes:
elevation (ft) area (so volume(cf) volume(cy)
442 1789 0 0.0
444 2576 4,341 160.8
446 3463 10,358 383.6
wet storage
wet storage required (cy) (67'DA)
129.3
bottom of stone weir (ft)
443.7
wet storage provided at this elevation (cy)
130.1
slope of wet storage sides
2:1
dry storage:
dry storage required Icy) (67'DA)
129.3
crest of stone weir
445.0
dry storage provided at this elevation (cy)
134.0
slope of dry storage sides
21
Sediment Trap design #2
drainage area (acres)(<3) 2.91
trap volumes:
elevation (t) area (so volume(cf) volume(cy)
420 3234 0 0.0
422 4324 7,532 279.0
424 5515 17,347 642.5
1' vAAVBIE
MST" STOW WEIR
.yyNt
ORMN4
DwuxD
LP
DRY STORAGE
AM__
+
vwntA[•
GE
WET STORAMM
A, IIAv.
(IXEAVY(D)
"M\
ORK,.,
nc.
•SU Purr 3.13-1
COLIR S"■RAR"
CUSS S It~
weir length (ft) (6xDA)
bottom of trap elevation (ft)
bottom trap dimensions:
top of dam elevation (ft)
top width of dam (ft)
top trap dimensions
OMmA.
DAWN"
Era.
wet storage: �rr D 1A_1
wet storage required (cy) (67'DA) 195.0
bottom of stone weir (ft) 421.5
wet storage provided at this elevation (cy) 201.7
slope of wet storage sides 2:1
11.6
442
26'x79'
446
6'
42'x95'
weir length (ft) (6xDA)
dry storage:
bottom of trap elevation (ft)
dry storage required (cy) (67'DA) 195.0
bottom trap dimensions:
crest of stone weir 423.0
top of dam elevation (ft)
dry storage provided at this elevation (cy) 248.3
top width of dam (ft)
slope of dry storage sides 2:1
top trap dimensions
MN, 1'W1 SPAlWAY
r W HOOT
CREST Or ENEAOENCY
WUNAY
DESIGN NIGH WATER
(RS-YR. STORM ELEV)
".s
um. Tv
----
PoSEA CREST
DRY • STORmN
DEW'TOmma
Dena
WET • srBtux
SFLYNFNt CLFN1cw PONT
(• PORNZ REDUCED
TuET O ]• RE
design high water
438.25
top of dam (ft)
440.00
top width of dam (ft)
10.0
bottom of basin (ft)
434.0
approx. bottom dimensions:
76k85'
upstream face slope:
5:1
downstream face slope:
3:1
baffles:
YES
length of flow, L (ft)
96
effective width, We (ft)
133
L / We (baffles required if < 2)
0.7
collars:
YES
depth of water at spillway crest (ft)
3.25
slope of upstream face (Z1)
2
slope of barrel (Sb)
8.46%
length of barrel in saturated zone (Ls)
29.48
number collars required
2
dimension of permanent collars
3.5x3.5'
emergency spillway:
YES
required capacity (Q25-Qp) (cfs)
0.0
bottom width (ft)
25
slope of exist channel (ft/ft)
33%
minimun length of exit channel (ft)
48
crest of spillway (ft)
438.25
Sediment Trap design #3
drainage area (acres) (<3)
1.18
trap volumes:
elevation (ft) area (so volume(cf)
volume(cy)
434 1084 0
0.0
436 1810 2,863
106.0
438 2636 7,283
269.8
wet storage
wet storage required (cy) (67'DA)
79.1
bottom of stone weir (ft)
435.6
wet storage provided at this elevation (cy)
80.6
slope of wet storage sides
21
dry storage:
dry storage required (cy) (67'DA)
79.1
crest of stone weir
437.0
dry storage provided at this elevation (cy)
99.8
slope of dry storage sides
21
weir length (fl) (6xDA)
bottom of trap elevation (ft)
bottom trap dimensions:
top of dam elevation (ft)
top width of dam (ft)
top trap dimensions
17.5
420
44'x 109'
424
10,
59'x 125'
�■ZNT�T.T.!
7.1
434
16k 77'
434
10,
33'A 93'
■
■ SEDIMENT TRAP #1 DETAIL
■
■ SCALE 1 "=30'
IF
PROPOSED SAFETY FENCE,
■
4 ■
■
N ■
■
� • I
■
■
0 ■ INSTALL SIGNS WARNING
®\ QUICK SAND, KEEP OUT"
,
PROPOSED
GREENWAY
(TYP-)
94
PROPOSED
,
GREENWAY
IP
jY
. D . D R 17.51
���kkkrE
LINEDRIPRAP
SPILLWAY CREST
a
� F
r
0
TEMPORARY
DIVERSION,
TYP.
PROPOSED 11.61
RIPRAP LINED
SPILLWAY CREST
ELEV.=445'
TEMPORARY
DIVERSION,
TYP.
SEDIMENT TRAP #2 DETAIL
SCALE 1 "=30'
PROPOSED SAFETY FENCE,
INSTALL SIGNS"WARNING
QUICK SAND, KEEP OUT"
SEDIMENT TRAP #3 DETAIL
i SCALE 1 "=30'
PROPOSED. -
GREENWAY-
(TYP.).! PROPOSED 7.11
RIPRAP LINED
SPILLWAY CREST -
�, ELEV.=437' -
PROPOSED SAFETY FENCE,
INSTALL SIGNS "WARNING
QUICK SAND, KEEP OUT"
/
■�MANG���■�'■■�■■■�:.
iCOTT /R. 05LLINS'Z
Lic. No. 035791 ,'n
3/12/20 "44j
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30B NO.
182150
SCALE
1"=30'
SHEET NO.
14
`,I 1 BOX CULVERT DRAINAGE PLAN
%T
\
1
♦ �_ ���--�- / /���� i� III �� �I� L� _�, (
- - /// �� i/ / / // // v� ♦ �� vil�llL
♦ - / / / CULVERT 1A ; ' � � � �4P �
60.50 ac.
CN=57 ��� /■■��■��
Tc=0.32 hrs. ' /f\
FINAL To 0.32 hrs./
700' OF OF wl A FLOW @2' (Tc-oit/s(.04 Tc 0r09ILs)
a �1 I ��
I
�>
WATERSHED SUMMARY
f 1 III,.
Area, 10-year Flow, 25-year Flow, 100-year Flow,
CN ac. cfs cfs cfs // 711///
Culvert N1 57 60.50 74.42 121.15 219.74 / ✓ 17\y
f/. 1/,
SCALE 1'=200'
�f1\ II IC\
��♦ PROPOSED \\..
CULVERT �
������♦
CROSSING
tM-M
I!� ■ 450- °
■
■
\- AREA ROUTED THROUGH WET y
- POND IN WPO 201800051 A
(THIS AJNALYS,IS_CQI�ERVATIVELY
ASSUI ZERO ATTENUATION) ■
- ■
i �■
c
I I
BOX CULVERT DETAIL
Cc m
O rt - SCALE 1'=30'
�a
010 / \
E ✓ / \ - __ _ _ LIMITS OF PROPOSED VDOT CL. AI RIPRAP LINED DOWNSTREAM
GREENWAY, TYP. ---- - OUTLET PROTECTION, WITH FILTER FABRIC
UNDERLAYMENT. FILTER FABRIC TO BE KEYED INTO THE
EXISTING GROUND A MINIMUM OF 9" AT THE ENDS AND
'�- ALONG THE PERIMETER, AND THE STRIPS OF FABRIC
SHALL OVERLAP A MINIMUM OF 12". ENERGY DISSIPATER
\ - DIMENSIONS: 16' LONG, 15' WIDE AT THE CULVERT AND
`• - --_ - 21' WIDE AT THE END. STONE THICKNESS=18"
3+16
ONE (1) PROPOSED 5'x5'
REINFORCED CONCRETE --
BOX CULVERT
I /
PROPOSED VDOT STD.
CONCRETE HEADWALL
WITHOUT WING WALLS
/ I
PROPOSED VDOT STD. CONCRETE
HEADWALL WITH 450 WING WALLS
0+00
\ \
/ q
BLOCK
LIMITS, TYP. \ \ \ PROPOSED CULVERT DIMENSIONS:
\\
250.00 LF @ 3.04%, INV. IN=403:10;
INV. OUT=395.50
PROPOSED VDOT CL. Al RIPRAP LINED UPSTREAM
--
DISSIPATER, WITH FILTER FABRIC UNDERLAYMENT. FILTER---
_ - FABRIC TO BE KEYED INTO THE EXISTING GROUND A
MINIMUM OF 9" AT THE ENDS AND ALONG THE PERIMETER, \ \�
AND THE STRIPS OF FABRIC SHALL OVERLAP A MINIMUM OF
12". ENERGY DISSIPATER DIMENSIONS: 10' LONG, 10' .\ -
- - - WIDE ATTHE CULVERT AND 18' WIDE ATTHE END. STONE , \
- - - - THICKNESS=18"/
I
PROPOSED VDOT
CONCRETE HEAD
WITHOUT WING %
PROPOSED VDOT CL. AI RIPR/
LINED UPSTREAM ENERGY
DISSIPATER, WITH FILTER FAB
UNDERLAYMENT. FILTER FABRIC
BE KEYED INTO THE EXISTIN
GROUND A MINIMUM OF 9" AT
ENDS AND ALONG THE PERIMEI
AND THE STRIPS OF FABRIC SH
OVERLAP A MINIMUM OF 12
ENERGY DISSIPATER DIMENSIO
10' LONG, 10' WIDE AT THE
CULVERT AND I WIDE AT TF
END. STONE THICKNESS=18
CULVERT NOTES:
1. CONTRACTOR SHALL ENSURE THE PROPOSED CULVERT #1 IS COUNTERSUNK A MINIMUM OF
6" INTO THE STREAM WHEN IT IS INSTALLED, ON BOTH ENDS OF THE CULVERT.
2. INSTALLATION OF PROPOSED CULVERT #1 SHALL MEET ALL CURRENT VDOT STANDARDS
AND SPECIFICATIONS. SEE THE NEXT SHEET FOR DETAILS.
440
440
=35
435
A-30
430
425
425
ROPOSED
GRADE
-0
420
415
-i ,i 0
410
D
TxT REINFORCED
STD.
CONCRETE BOX
PROPOSED
VDCT
STD
NALL
CULVERT,
CONCRETE
EN
WALL
JALLS
WITH
5° WING
WALLS
405
XISTING
405
GRADE
tT�
- \_ \�
i
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nSO
'HE
-,, (�
- IN>4p �Q LF @ \'
400
ER,
ALL
\UT;395 \\
so
NS:
E
- -' D
PROPOSED VDOT CL AI RI IRAP LINED DOW STREAM
395
OUTLET PROTECTION, WITH FILTER FABRIC
UNDERLAYMENT. FILTER FABRIC TO BE KEYED INTO THE
EXISTING GROUND A MINIMUM OF 9" AT THEENDS AND
ALONG THE PERIMETER, AND THE STRIPS OF FABRIC
SHALL OVERLAP A MINIMUM OF 12". ENERGY DISSIPATER
DIMENSIONS: 16' LONG, 1T WIDE AT THE CULVERT AND
390
21' WIDE AT THE END. STONE THICKNESS=18"
390
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KWOL
0
0�
0. o�
m�
M
4-
d-
0+50 1+00 1+50 2+00 2+50 3+00 3+25
BOX CULVERT PROFILE
CULVERT NO. 1 SCALE 1'=5' (V)
SCALE 1'=r5O'(H)
Project Brookhill Neighborhood Blocks 9-11
Plan Sheet No.
Designer FGM, PE
Sheet 1 of 1
Rev. Dale
Data 2/7/20
STATION:
AHW Controls
CROSSING 111
HYDROLOGICAL DATA
100 yr. Flood plain elev.
D.A. = 60.5 ac., CN - 57, TC -0.32 hrs.
Design AHW depth elev.
Structures elev. freq. - TWelev.
Shoulder _
elev. 440 _
CL elev. 440.4
DISCHARGES USED
RISKA E MENT
AUI
Skew ° Cover
0 25 = 121.15 CFS
Detours Available
Length
Q Design = 135 CFS
Overtopping Stage
0 = CFS
Flood Plain Management
Inv. El. 403.10 So= 3.04% Inv. EL 395.50
0 = CFS
Criteria and Significant Impact
Qrlg. Gr. Elev. 403.6 L= 250 Ong. Gr. Elev. 396
0 = CFS
CULVERT TYPE & SIZE
Q
Q/B
HEADWATER COM PUTATIONS
CONT.
HW.
ELEV.
OUTLET
VELOCITY
End
Treat.
COMMENTS
INLET CONT,
OUTLET CONTROL
HW/D
HW
Ke
do
(dc+D)12
ho
H
LSo
HW
C.M.
Smooth
(1) - 5'x5' Box Culvert w/ 45, wingwalls
135
135
1
4.5
0.5
8.3
6.4
6.4
3.2
7.6
2.0
400.00
12.65
YES
Inlet Controlled
Note: Design assumes lower 6" is submerged
Design Flood Exceed. Prob. Elev.
Overtop Flood Exceed. Prob. Elev.
SU M M ARY & RECOM M EN DAT IONS:
Base Flood s%Exceed. Prob. Elev,
SCOTT/R. 0t -LLINS Z
Lic. No. 035791 ,�
po 8/04/20��
\LISIONnI,
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JOB NO.
182150
SCALE
AS SHOWN
SHEET NO.
15
2016 ROAD & BRIDGE STANDARDS
BCS-OT
Span-8112
I IN
�I
Lill
(Span-B)/2J top and cot.
TYPICAL SECTION
GENERAL NOTES:
Capacity: AASHTO HL-93 Loading
Specifications:
Construction: Virginia Department of Transportation Rood and Bridge Specificotlons.
Design AASHTO LRFO BrtdV Desiw Sooc6cal;ors, Sth Edition 2010: 2011 Interim
Specification: and DOT 410WacOtvOns.
Nlcmcrele ahall be Class A4.
Deformed Nnfwlsr% bars shut conform to ASTM A615, Grade 6M All Ionic, �nq bar dlm.r,I -
the detailed drawings areto Canters of bars except wfine otherwise Acted and are subject 10
fabrication and construction tolerances.
Ite BH3
BHrs
Construction joints shall be constructed and ounces In accordance with the current VDOT Road
rnate with
H1 n.te
and Bridge Specifications.
hen required
Barrels more than 351in length shop be poured in sections by providing vertical construction i.inls
not exceeding 251 between joints nor more than 30'from ends of barrels.
L1 ollcorners
U• Hors BHI and 8113 shop have a Pin diameter of 24 bar diameters.
Dimensions on bar diogroms are ou. to-oul of bars. Bars we str6ght unless otherwise anow-
h n r l , r h n h n r l h w T e umb2 e L and BLy of s shown A the table is l e number ir Io"91 and boas s o n It
lire typical section and may not equal ,the total numLr of bo75 .saunas. placed
one BL2 lows shall
have o lap or 30y bar diameters at splices. Al construction j mts. brzl INocetl bore e. n t inject 3O
the G1uaw'ete Ioralopsdothe in Fatima led (3UAN./LF shown gor reinforcing Elea does not induce
T]BL2 lows. The additionol wet hl Par Ion tudi al lop is shown in the
able -
The oo pp /
lert, under Ovlo 21 food fillsandsnap be 2�alrom t a [ace ofhthelaco•nc. the concrete for
ace for concrete
stirsf
.op BHI ..Wells.
reinforcing f r a r n r I fills n r n/ hr mI m reinforcing
NIllle O M culverts under D l0 2 OOl 9 f Ctl OO IOW ao OO c o Y
.
t nl rmn a AO3 steel <o 0 0 t ASTM 5.
At the Contractor's a tioo BVI bars may be spliced at the permissible construction joint in order
to facilitate conslruc Pion. TVa additional compensation shall be provided for the increase in
reinforcing steel quantity due to the splices.
Headwall qumltitks shown assume wingii are to be bulls at a 45° angle to the headwall.
Permisnbk
The &si are applicable to the Id "eight ant other conditions indicated. M thane in 11
construction cbntlTwnsn nvaidotethese designs. g y g
Joint typ.
Nd`t0ls refe,NN,cea oy letter apply, when the acceptable foundation level is the some for both x,
and wings. I foundation levels we dlffereft the height of the winopwoll'ahull be adjusted by s°I=r'i,-
o( another tittered ingaoll of the appropncte height. For wingwalf data4s, rate, to s.ara_l a s 11..
BCW far the appropriate f0 slope.
For details of extending existing boxes. refer to standard BCE-01.
For modification of details for skewed culverts. see the skewed box details included Ir t r.u_
plans.
This standard shot] be Used with the BCS standard series.
A COPY OF THE ORIGINAL SEALED AND SIGNED DRAWING IS ON FILE IN THE CENTRAL OFFICE.
\VDOT SINGLE BOX CULVERTS SPECIFICATION
ROW MA BRIDGE STANDARDS RET-EREf9CE
:HEST I OF 2 REVISION DATE STANDARD DETAILS
1002.01 07/12 VIRGINIA DEPARTMENT OF TRANSPORTATION
A x (- n
2016 ROAD & BRIDGE STANDARDS
BCW-21
GENERAL NOTES
Soea1flc.11mu:
AA 0 L 0. lade Diiu S ovfacii Sul Edxtaon 2010,201Laui Revaeaona and
6H RF 9 w
VOGT Modific ton a�
Llmtta of validity o Standard WlngwcP sea 0^
The standard wing.all designs are Dosed on the fallowing assumptlona:
iteT%ic euri�ge uraloodl ca wine loge between the wall am the box Culver+
Backft
I
H er rn rf m ri t I fr 1 e' Back p all c s put be ate 0 wi m enrol he on a e ld a set a 0 9 t 9 r,��{{ h . I ne 1
Cahesly backfl Mt,l of De rmlttad. Cam stitch a4 the BI matrlal wfT In o distance o
4
tie D
one-M1N� lira h• fit of the Oral shall be horM tom actors aN . a r a r
Or 1n a o qe
Tire Contractor Anal D vlains drainage system InalaaTed On Sheet I.
far in On In r fl (m -rl I I Ttro cost 1 Oral o f s ncl d o oust D k o b r clarets, non C Tub n and
M system 0 9 0 0
her f ms re Iredi n I i a a e a o f oncrete. oT Te a SI lea n[I ental' in t� [ sT g g w C W
Concrete
AN cmu rat. anal oil Class A4.
Ralniar[emen+
iwaamm•eStBtdpp efnforcing Oars hapll c nfwm Ta AST. d61 .�ratle 6 A ralnfarcing Our d1manslons on
fobrlcciiObdardrrowud .lAt ur .ell oo rrf Its . arc xcaa nerd o rierrlsa nuts. and ors bublact to
Dlmenslora on oar diagrams we out-to-mt of adi Hers are shalghT Unlesa otherwise shown.
The concrete over to the Outermost relnfwcement pars and) be o. folMra:
Was foo+In at faced u 3" minfnm scorer
Yell sum �� races) 2%• mu.amYry c v
AT Can ac4Or's Option WV Series bars ma oes cetl at t f the foot, In Order to
a tr p r WI too r'0
f n I I n in c n wf u
cl ate co atruct 5 e la ens De [was ce Tgoa C Street No
9th
�n R 4 !r 9 nrSf In i c al comae. sat o s ar(ce O ov add o the nwease I e me steel slant sue to a pn a ri
Yha 6 Iltas.
p
Mlacollaneous
WoD"011 shall be placed at The lowest Dotnt feasible for free wafroge away from The wing.
m Four • Wings w• O 09 Y6ed 0 8tra nt VOSaIn 9 Orla SA•M6 V t0 20'. TWO a and
Yp 9 t g P Type T n I k r fr C 1' k 4' i Y o T De II Wt w To e u a w s o s (Ion, 25' t 5 Far s era above 5. peclal des a
YY r oa p
rl. s ors re ulnas. yne win ray tlo De used far eOCN cupver 19 Morn m he BC eariea BneO s.
rq c I g 1 f I + t +
The d•sfpna Mown are sap cable far G 45' side• wttn The roused wed other conditions
Indlcotad- Any chm0e in see coral far. Ihvallda+oa those designs.
Quantities anown are for offs wing.
WINO
Wolf Oumtitras
w-sm
kef
Huai,
End
alma
ker
L°.
End
Conw•Te
CY
Relniwcemmi
LB
A
2.3
204
691
0.46
B
2.8
245
LOS
2.46
C
3.2
273
121
0.49
0
Am
306
L49
0.52
E
4.4
346
1.49
0.52
F
4.11
376
1.71
1 0.52
G
5.6
134
Ln
0.55
H
61
6 4 3
2.03
2.55
I
Tf
55 2
21B
am
J
7.7
Serf2.36
6.60
x
B S
6 72
2.43
0.65
L
4.3
738
2.70
0.65
M
10.3
879
2.76
0.71
N
10.7
-00
3.05
OAS
0
11.7
1814
3.10
1 6.85
P
13.2
1172
3.17
0.88
9
Me
1337
3.45
0.88
N
15.3
1444
3.51
@.95
S
16.5
1591
O58
0.95
T
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1695
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�VDC3T SPECIFICATION
ROAD AND BRIDGE STANDARDS WING DETAIL REFERENCE
SHEET 1 OF B REVISION DATE 2: 1 FILL SLOPE - TYPE I
1007.01 07/12 VRGNIA DEPARTMENT OF TRANSPORTATION
2016 ROAD & BRIDGE STANDARDS
2016 ROAD & BRIDGE STANDARDS
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ROAD AND BRIDGE STANDARDS
STANDARD DETAILS REVISION GATE SHEET 2 OF 2
VIRGINIA DEPARTMENT OF TRANSPORTATION 07/11 1002.02
2016 ROAD & BRIDGE STANDARDS 2016 ROAD & BRIDGE STANDARDS
2016 ROAD & BRIDGE STANDARDS
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SPECIFICATION XVDOT
REFERENGE WING DETAIL
ROW AND BRIDGE STANDARDS
2: 1 FILL SLOPE - TYPE I REVISION DATE SHEE7 2 OF 0
VIRGINIA DEPARTMENT OF TRANSPORTATION 07/16 1007,02
A COPY OF THE ORIGINAL SEALED AND SIGNED DRAWING IS ON FILE IN THE CENTRAL OFFICE
\VDaT FE WING DETAILS SREFE)IENCE
fOW AND BRIDGE STANDARDS
-HEET 5 OF 8 REVISION DATE 21 1 FILL SLOPE - TYPE I
1007.05 01I12 VIRGINIA DEPARTMENT OF TRANSPORTATION
3'-
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A COPY OF THE ORIGINAL SEALED AND SIGNED DRAWING 15 ON FILE IN THE CENTRAL OFFICE
SINGLE BOX CULVERTS
30 TO 40 FT. FILLS
VIRGINIA DEPARTMENT OF TRANSPORTATION
BCS-40
ROAD AND BRIDGE STANDARDS
:VISION DATE SHEET 2 OF 2
07/11 1007,7
HC'W-71
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A COPY OF THE ORIGINAL SEALED AND SIGNED DRAWING IS ON FILE IN THE CENTRAL OFFICE
A COPY OF THE ORIGINAL SEALED AND SIGNED DRAWING IS ON FILE IN THE CENTRAL OFFICE
XVDDT
a AND
WING DETAILS
2 1 FILL SLOPE -TYPE I
VIRGINIA DEPARTMENT OF TRANSPORTATION
SPECIFICATION
REFERENCE
SPECIFICATION
REFERENCE
WING DETAILS
2: 1 FILL SLOPE -TYPE I
VIRGINIA DEPARTMENT OF TRANSPORTATION
✓DDT
X
ROAD AND BRIDGE STANDAI .
SHEET 3 OF 8
REVISION DATE
07/12
EvISION DATE
07/12
SECT a F
7007.03
007.04
STEM BAR SPACINGS
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SHEET NO.
16
PRE- AND POST -DEVELOPMENT SUBAREA AND OUTFALL SUMMARIES STORMWATER MANAGEMENT NARRATIVE:. WATERSHED SUMMARY FOR SUBAREA 1
OVERVIEW Area,
THIS PROJECT IS PART OF THE BROOKHILL DEVELOPMENT, AND STORMWATER
CN
Pre-Dev. Subarea Post-Dev. Subarea Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 TREATMENT IS PROVIDED TO MITIGATE THE IMPACTS FROM THE PROPOSED ac.
(Point of Interest) (Point of Interest) Channel Protection Compliance Limits of Analysis for Channel Protection Flood Protection Compliance Limits of Analysis for Flood Protection IMPROVEMENTS. THIS STORMWATER MANAGEMENT PLAN COMPLIES WITH PART IIB
SWM REQUIREMENTS. DA 1 (Pre-Dev.) 60 5.93
< < DA 1 Post-Dev. 88 2,05
1 1 Section 6.3.a (Energy Balance) N/A (Energy Balance Satisified) Section C.2.6 (10 yr. Post Flow_ Pre Flow) N/A (10 yr. Post Flow _Pre Flow Satisified) (. )
WATER QUALITY SUMMARY
2 2 Section B.1.a (2-yr Peak Flow is nonerosive in Pipes and OP) Section B.4.a (Subarea < 1% of Overall Watershed) Section C.2.a (10-yr Peak Flow is Confined within pipes and outfall channel) Section C.3.c (Outfalls to mapped Floodplain) THE STORMWATER QUALITY REQUIREMENTS FOR THIS DEVELOPMENT ARE MET
3 3 Section B.3.a (Energy Balance) N/A (Energy Balance Satisified) Section C.2.b (10-yr. Post Flow < Pre Flow) N/A (10-yr. Post Flow < Pre Flow Satisified) THROUGH MULTIPLE BEST MANAGEMENT PRACTICES, THE BEST MANAGEMENT WATERSHED SUMMARY FOR SUBAREA 2
Total Phosphorous Removal Required for Blocks 9-11 13.Ibs/yr PRACTICE OF PRESERVING OPEN SPACES IS IMPLEMENTED. A RECORDED EASEMENT
\ - Pre -Development ImpeIVIOUS Area Summary WILL BE PROVIDED PROTECTING THESE AREAS FROM DISTURBANCES. AFTER THE CN Area,
Phosphorous Removal Achieved from the Level II Wet Pond BMP 5.87 87 Ibs/yr - \ Subarea 1 APPLICATION OF THIS BMP, A MINIMUM PHOSPHOROUS REMOVAL RATE OF 10.05 ac
Phosphorous Removal Achieved from the BMP of the SWM Forest &Open Space Easements 3.87 Ibs/yr \ \ Existing Impervious Areas 19,275 sf Ibs/yr IS REQUIRED. A LEVEL II WET POND TREATS SUBAREA 3 AND REMOVES 5.87
Ibs/yr OF PHOSPHOROUS. ALSO, A 2.08 Ibs/yr PHOSPHOROUS CREDIT FORTHE WET DA 2 (Pre-Dev.) 57 5.27
Phosphorous Removal Credit from immidately adjacent Wet Pond B (Amendment #2 to WP0201700037) 2.08 Ibs/yr \ / ' POND B (WPO 201700037 AMENDMENT #2) LOCATED IMMEDIATELY ADJACENT TO DA 2 (Post-Dev.) 80 5.59
Remaining Phosphorous Removal Required to be Purchased 2.10 Ibs/yr BLOCK 11 IS APPLIED. AFTER THE IMPLEMENTATION OF THESE BMPs, THE DEVELOPER
_ WILL PURCHASE NUTRIENT CREDITS FOR THE REMAINING PHOSPHOROUS BALANCE. A
SWM FOREST &OPEN SPACE EASEMENT NOTES: / / / \ ' MINIMUM PHOSPHOROUS REMOVAL RATE PURCHASE OF 2.10 Ibs/yr IS REQUIRED
�i. NUTRIENT CREDITS WILL BE REQUIRED TO BE PURCHASED FORTHIS DEVELOPMENT PRIOR / /� - \ \ / / WATERSHED SUMMARY FOR SUBAREA3
TO THE ISSUANCE OF ALAND DISTURBANCE PERM IT.'SWM'IS AN ACRONYM FOR
STORMWATER MANAGEMENT. j� / / / WATER QUANTITY SUMMARY ELN Area,
z. THE SWM FOREST AND OPEN SPACE EASEMENT IS SUBJECTTO THE GUIDANCE SET FORTH / THE PROPOSED DEVELOPMENT HAS THREE CONCENTRATED OUTFALLS. ALL THREE OF ac.
BY DEQ IN THE VIRGINIA STORMWATER MANAGEMENT PROGRAM. THE AREAS WILL REMAIN -/ - - / / I THESE OUTFALLS MEET MINIMUM CHANNEL AND FLOOD PROTECTION REQUIREMENTS
UNDISTURBED IN A NATURAL VEGETATED STATE EXCEPT FOR ACTIVITIES AS APPROVED BY � - -
DA 3 (Pre-Dev.) 57 3.99
/ / / � SET FORTH IN 9 VAC 25 870 66. SUBAREA 1 RECEIVES ATTENUATION VIA AN
THE LOCAL PROGRAM AUTHORITY, SUCH AS FOREST MANAGEMENT, CONTROL OF INVASIVE i -' \ \ / UNDERGROUND DETENTION SYSTEM. SUBAREA 2 ADEQUATELY CONVEYS ITS RUNOFF DA 3 (Post-Dev.) 74 7.55
SPECIES, REPLANTING AND REVEGETATING, PASSIVE RECREATION (e.g. TRAILS), AND % \ ( THROUGH MANMADE PIPES AND A RIPRAP LINED CHANNEL AND OUTLET PROTECTION
LIMITED BUSH HOGGING TO MAINTAIN DESIRED VEGETATIVE COMMUNITY (BUT NO MORE -D L TO A MAPPED FLOODPLAIN WHERE THE SITE's SUBAREA IS LESS THAN OR EQUAL TO
THAN RFOUR ESA YEAR). / \• / / 1% OF THE RECEIVING CHANNEL's TOTAL WATERSHED, AND SUBAREA 3 RECEIVES
3. THE PROPOSED POSEDESC LIMITS OF DISTURBANCE BOUNDARY (18.85 ac.)+THE PROPOSED v i / i ATTENUATION VIA A LEVEL II WET POND, PLEASE SEE THE SUMMARIES ON THIS /
SWM FOREST & OPEN SPACE EASEMENTS' BOUNDARY (11.34 ac.) ARE USED TO DEFINE - \ ` \ / / SHEET, AND THE ATTACHED CALCULATIONS PACKET, FOR ADDITIONAL DETAILS. /
THE VRRM WATER QUALITY BOUNDARY (30.19 ac.).
Overall Acreage Summary IF
Pre -Development
Post -Development
Area, ac.
Area, ac.
DA 1
5.93
2.05
DA 2
5.27
5.59
DA 3
3.99
7.55
Post -Development Impervious Area Summary
1-year Flow, 2-year Flow, 10-year Flow, Subarea 1 C8/O4/20
�Roads & Sidewalks 45 825 sf
cfs cfs cfs f1.66 3.58 11.95Existing Impervious Areas 19,275 sf65,100 sfNS�0.23 2.19 9.01 Subarea 291 InRoads & Sidewalks 63,000 sf
Buildings & Patios/Decks 39,330 sf Z41-year Flow, 2-year Flow, 10-year Flow, Driveways 19,800 sf
cfs cfS cfS 122,130 sf \
0.80 2.25 8.90 Subarea 3
10.14 14.48 27.80 Roads & Sidewalks 61,800 sf
Buildings & Patios/Decks 39,900 sf
Driveways 18,450 sf
1-year Flow, 2-year Flow, 10-year Flow, 120,150 sf
cfs cfs cfS Uncaptured Overland Runoff
0.58 1.66 6.62 Buildings & Patios/Decks 17,670 sf Ln (A Ln Ln
0.12 0.60 4.16 RecreationalAmenities 7,150 sf z Z z Z
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� 40
\ \
/ ♦ '� - ♦ �� �-�-_..-, ■ 1/♦ ' OF OVE ND FLOW \
J
I 1,600' OF CHANNEL FLOW
�� 1 ♦♦.♦ ♦� �1 /" ■ _ SUBAREA �� .�. ♦♦�. \..� '� Me
c v \
to
to ♦♦•■■■ ■■■•■■•■•�� ♦i♦� 1 jcNS�a (♦�� A 1
�• ■ - - -- _. 1� ♦ A _ Tc 0.12 hrs.r f 11 A
• ♦ 1�■� ��
• - • L - AREAS PROPOSED TO BE DEVEL)PED ARE 0 ♦ I \\\V' �I /\)
i • _/ ANALYZED FOR STORMWATER QUANTITY ■ \ � I � \ / � • � ♦ � i ` �� ♦ \ � \ � N
COMPLIANCE ON AN OUTLET Y OUTLET ■ ♦ � - ` V � '� / � It
S
\ • / BASIS. THE DEVELOPED ARE. WHICH 0 ♦ ',� / A < • I C `�y -
i ♦ --- --ARE AREAS APPROXIMATELY UPLAND OF ■ • \ / , • ! ��
■ A \ Q
�♦ ! • �/ •
THE GREENWAY, ESTABLISH THE
• DRAINAGE DIVIDES. ! I • . {' - ( ■ r
_
' 1
♦♦,■•_ •••
♦♦♦•_••� �A� it �i �_i __ _ - - tYi �- - •■�■ A A
Ld
I
-I
PRE-DEV. SUBAREA •1 ♦ iIN 0♦
V���
W
CN=6o U
•
Tc=0.16 hrs. ■ - • \ x `\ - - - I x I_LI
\♦ ♦ � �, � � \ 45' OF OVERLAND FLOW AW
\ \ • • ♦♦�► \ \ \ w A ELEV. 8' &♦
> 55 �
F CONC. FLOW w -
/ A _ A• •
�;oo' OF OVERLAND Flow �� \ y \ / \ � I ♦ _ _--� �_ ��� A \ J Q
375' OF CONC. FLOW w ♦ -
\ / �`
\ / w A ELEV.-6' & ♦ ELEV.=2' - -
ft i \ 40' OF GHA�N1�Et FLOW ��' A \ \ _ Q
\ -� ■ ■■!!■ ♦ ♦\
/� \ _ �� ■ ♦♦ : \ /I / PROPOSED SWM FOREST & OPEN SPACE PROPOSED SWM FOREST & OPEN SPACE
�\ . -' \ ! : ♦ ♦ I EASEMENT, TYPICAL. THE TOTAL ACREAGE \ SUBAREA 2 \ I I(iI EASEMENT, TYPICAL. THE TOTAL ACREAGE I v J w
;� ♦ ♦ II OF THESE EASEMENTS (11.34 ac.) IS ♦ 5.59 ac. �I OF THESE EASEMENTS (11.34 ac.) IS
,;� �` T `! \ - ! ♦ ♦ OUTSIDE THE PROPOSED LIMITS OF �' W
♦ - \ PROPOSED CN=80 i. \ OUTSIDE THE PROPOSED LIMITS OF Y
♦ DISTURBANCE. SEE 'SWM FOREST&OPEN DISTURBANCE. SEE FOREST `� _ \ ! -- - '! -- \I) ♦ - CONCENTRATED Tc=0.11 hrs.
y ! _ .:�_1.. ♦ PRE-DEV. ♦ SPACE EASEMENT NOTES' ON THIS SHEET. - ♦ J SPACE EASEMENT NOTES' ON THIS SHEET. w
1 \ ■ ♦ ♦ - OUTFACE #i F / A H
SUBAREA 2�� (TO POI #1) �
I - \ ■ ♦♦ ♦ - "'!- PROPOSED CULVERT. \ ♦ _
Tc50 I6 hrs. ♦ ROPOSED ESC LIMITS OF I) t - %" ROPOSED ES
% / -- -- ' I ■ --' CN-57 ♦♦ ` f��'x_-_ CULVERT DRAINAGE � ♦ � � \ \ _'-._ - � o
_ �' . ■ ■ _ / AREA=60.5 ac. SUBAREA 1 C LIMITS OF U)
_ • I --, ♦ ♦\ \ DISTURBANCE BOUNDARY, / - " 2,05 ac. _ ♦ r\ - - DISTURBANCE BOUNDARY, in J o
• _ ♦ , .- \ CN 10 PO #1 TYPICAL. THE TOTAL LIMITS OF
/ ! i • \ � POI # 1 J; � \ TYPICAL. THE TOTAL LIMITS OF L ' Tc=o.10 hrs. 1 -
/ ■ i', ♦ ♦ DISTURBANCE ACREAGE IS (- '� DISTURBANCE ACREAGE IS
-AREA T9EAT D,UNC, 4 <,... : \ - ,J� ♦♦ \ ': 18.85 ac. SEE'SWM FOREST & /: \ -., AREA TREA , _UNDER � i i�' {,., �' � \ � > G♦ \, \ � 18.85 ac. SEE 'SWM FOREST & w W
i PO-20 ND, VD I (\ , - _ ♦ \ OPEN SPACE EASEMENT NOTES' A A- WPO 20180 VIA. i �� - • ( ♦* ,� � �- OPEN SPACE EASEMENT NOTES' U..l Ln
- --'POIPD I ♦ \ - ♦♦ - ON THIS SHEET. / / POND 4B / ',- V .i ♦ - i \ ON THIS SHEET.
•
II,
I
�.
♦ , ^" r � i LIMIT59EFEMA -
4
y = ♦ y
- .> , / ♦ ♦ . GREENWAY, TYP. - ♦ / ,� l ♦ ♦ , GREENWAY, TYP. APPROVED_100 YR
1 1 �f�
. � ♦ ♦ 1 � ♦ ♦ �� � � ��� ' 1 ♦ �'� �, � FLOODPLAIN / V
v 1♦♦ 4 A �� ♦♦ ♦♦♦♦ \ \ v O
�., �CN
♦♦,1;-�.♦••♦ ♦•♦� ♦♦A - PROPOSEDEDL.
A ,,� 1 ♦ A ..._� `� 1 1 \ ,.. -��CONCENTRAT
\ _� ♦ _ A \� • _ OUT #2 \ w
`� •-�� �� AA • - 1 '� ,D�. 1 �� V����� ' 1 1 TO.POI #2 -�
-®
1 . A¢� \ �� \ ® ®� \ b
♦ \ V �, ♦ ♦ \ ® =� \ w
♦ ♦'
00 n�. t/I
" � 1• � . 1 v a�=z. � 1
�•� ■ 1 �'� - 1� A ® ® / JOB NO.
PROPOSED SLOPEDV
. ,':- tl♦♦�� V A� ® i is / �_ �w -.... ♦♦ DOTCLASS II RIPRAP LINED ®- ®5 p
General Construction notes for stormwater Management Plans /�'�., 1\ �I ,�,\_ �„ CHANNELw/GEOTEXTILEFILTERFABRIC 1821SO
1. All dams and constructed fill to be within 95% of maximum dry \ !,' \\ ® -� - - UNDERLAYMENT. FABRICTO BE KEYED INTO EX. - - ®®
density and 2% of optimum moisture content. All fill material to \ \\� �- - - ti GROUND 9"MIN. AT ENDS &ALONG PERIMETER. \RISWAAE
' be approved by a geotechnical engineer. A. geotechnical engineer is \ \\ ® "<<,` = 'r:Qscace _ .� ®.® SCALE
to be present during construction of dams. \ \ ® % `". - - - - ® ®® 1 n_ 120 '
2. Pipe and riser joints are to be watertight within stormwater ® oo \ \ -
management facilities. \ _:; POI #2 \ `V PROPOSED FLATVDOT CLASS II COARSE AGGREGATE OUTLET ®V t: •`" ®� POI #2"
'3. For temporary sediment traps Or basins which are t0 be converted --- \ -; _ - _ - `..\ { PROTECTION w/GEOTEXTILE FILTER FABRIC UNDERLAYM ENT. ® SHEET NO.
to permanent stormwater management facilities; conversion is not PRE-DEV SWM PLAN: \ _- ,, - - �, ..j �� / FABRIC TO BE KEYED INTO EX. GROUND 9"MIN. AT ENDS
\ - POST-DEV. SWM PLAN:-� 17
to take place until the site is stabilized, and permission has been \ _ - - ALONG PERIMETER, FABRIC TO OVERLAPAMIN. OF 9"
obtained from the Count erosion control inspector. SCACEZ"=120' - \ \ __-- \ .r h� SCALE 1"=110' �!
Y P \ g �-�� p (L=24', W1=6', W2=12', D=30" MIN.)
PROPOSED
CONCENTRATED
I --
3
/ __--_ )
_ � TO POI #3
I _
% 1 POI #3
-
/�Ep
WET POND DESIGN & REQUIREMENTS: STORMWATER MANAGEMENT FACILITY GRADING
WET POND CONSTRUCTION NOTES:
Treatment Volume, Tv (VRRM)
12,473 cf
FACILITY PLANTING SPECIFICATIONS:
Minimum Treatment Volume Required for Level II Basin
q
18 710 cf
'
1. THE CONTRACTOR SHALL ESTABLISH AND MAINTAIN A VEGETATIVE COVERAGE IN THE POND AND ITS BUFFER.
Treatment Volume Provided at MWSE
15,320 cf
2. THE CONTRACTOR SHALL ALSO INSTALLTHE WETLAND SHELF AND AQUATIC BENCH PLANTINGS AS REQUIRED, AND USE NUTRIENT RICH SOIL IN
4 Q
Minimum Percentage of Tv Provide at MWSE
u g d 5
0
5 0 �
THESE AREAS TO PROMOTE HEALTHY GROWTH AND ROOT DEVELOPMENT.
Percentage Of TV Provided at MWSE
82
3. PLANT SELECTION SHALL PROMOTE DIVERSE WILDLIFE AND WATERFOWL USE WITHIN THE STORMWATER WETLAND, AQUATIC BENCH AND
BUFFERS.
Ponding Depth Corresponding to Minimum Tv Required
0.4 ft
4. WOODY VEGETATION MAY NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET
Maximum Ponding Depth allowed for Minimum Tv
4 ft
FROM THE PRINCIPAL SPILLWAY STRUCTURE.
5. A VEGETATED BUFFER SHALL BE PROVIDED THAT EXTENDS AT LEAST 25 FEET OUTWARD FROM THE MAXIMUM WATER SURFACE ELEVATION OF THE
Maximum Percentage of Tv Provided above MWSE
50 %
WET POND. PERMANENT STRUCTURES (E.G., BUILDINGS) SHALL NOT BE CONSTRUCTED WITHIN THE BUFFER AREA. EXISTING TREES SHALL BE
Percentage of Tv Provided above MWSE
18 %
PRESERVED IN THE BUFFER AREA DURING CONSTRUCTION IF POSSIBLE.
6. THE SOILS IN THE STORMWATER BUFFER AREA ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS TO ENSURE STABILITY.
THE DENSITY OF THESE COMPACTED SOILS CAN BE SO GREAT THAT IT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, MAY LEAD TO
Minimum Forebay Volume Required (15% of Tv) 2,806 cf
PREMATURE MORTALITY OR LOSS OF VIGOR. AS A RULE OF THUMB, PLANTING HOLES SHALL BE THREE TIMES DEEPER AND WIDER THAN THE
DIAMETER OF THE ROOT BALL FOR BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK.
Forebay Volume Provided 4,616 cf
7. AVOID SPECIES THAT REQUIRE FULL SHADE, OR ARE PRONE TO WIND DAMAGE. EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS
Minimum Upper Wetland Shelf Area (10% of Pond Area) 654 sf
STRONGLY RECOMMENDED AS A MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS,
Upper Wetland Shelf Provided 655 sf
CONTRACTOR REQUIREMENTS:
Notes:
1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS.
1 A minimum forebaY p volume depth of 4' with an aquatic bench 4' wide 2'
2. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL
deep has been provided.
INFORMATION. THE CONTRACTOR SHALL ABIDE BY ITS CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE
THOSE OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE AVAILABLE FOR A FEE FROM THE VIRGINIA CHAPTER OF THE AMERICAN SOCIETY
2 A minimum forebay volume of 15% of the total Tv has been provided.
OF LANDSCAPE ARCHITECTS, VIRGINIA NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE DESIGNERS),
3 A 10' wide aquatic bench ranging from 12"-18" in depth has been provided.
3. ALL PLANT MATERIAL SHALL MEET THE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN
4 Side slopes of 5:1 have been provided.
STANDARD FOR NURSERY STOCK, PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERYMEN, 1250 STREET, NW; SUITE 500, WASHINGTON, DC
20005
5 The minimum treatment volume required has been provided.
Elevation
(ft)
Area of Forebay
Cell Contours (sf)
Volume
(cf)
428
399
0
430
622
1,013
432
880
2,507
433
1,018
3,456
434
1,309
4,616
436
-
-
438
440
Elevation
(ft)
Area of Main Cell
Contours (sf)
Volume
(cf)
428
180
0
430
923
1,007
432
2,068
3,922
433
2,780
6,337
434
4,573
9,977
436
-
-
438
440
4. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN.
5. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-7001
BEFORE ANY EXCAVATION). 2Q"
6. REFER TO THE APPROVED CONSTRUCTION PLANS FOR ANY DETAILED SITE INFORMATION.
7. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES.
LOW -FLOW WEIR 36" MIN.
8. PLANTS WILL BE PREPARED FOR SHIPMENT IN A MANNER THAT WILL NOT CAUSE DAMAGE TO THE BARK, BUDS, BRANCHES, STEMS, OR OVERALL
SHAPE OF THE STOCK. CONTAINER GROWN PLANTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE BEEN GROWN. PROJECTION
9. ALL PLANT MATERIAL UNLESS OTHERWISE SPECIFIED SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL
SHALL BE HEALTHY, VIGOROUS, AND FREE FROM DEFECTS, DECAY, DISEASES, INSECT PEST EGGS, AND ALL FORMS OF INFESTATION. ALL PLANT HIGH -FLOW WEIR r ,
MATERIAL SHALL BE FRESH FREE FROM TRANSPLANT SHOCK OR VISIBLE WILT. PLANTS DEEMED UNHEALTHY WILL BE REJECTED.
10.ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH. FOR. THE ROOT SYSTEM TO HAVE DEVELOPED
SUFFICIENTLY TO HOLD ITS SOIL. CONTAINER STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED.
11.PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL _
BE SHADED AND PROTECTED FROM THE WIND AND SUN. PLANTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING ATALLTIMES BY 6"
COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST, WET BURLAP; WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING EDIMENT FOREBAY L
12 THE OWNER RESERVES THE RIGHT TO SUBSTITUTE PLANT MATERIAL TYPE, SIZE AND/OR QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY
`G
THE DESIGNER.
C! W��n
13.MINOR FIELD ADJUSTMENTS MAY BE NECESSARY DUE TO SITE CONDITIONS (EX: ROOTBALL AND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST
BE APPROVED BY THE DESIGNER.
14.NO PLANTING SHALL OCCUR WHEN THE SOIL 15 FROZEN.
r �'
15.PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENT TO CONTAIN THE ENTIRE ROOT
1'cr PRIMARY POND
BALL OR ROOT MASS, WITHOUT CRAMPING ROOTSTOCK.
16.THE CONTRACTOR SHALL MAINTAIN A ONE (1) CALENDAR YEAR 90% CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF
1
CARE AND REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR
ONE CALENDAR YEAR.
i I
17,THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS.
18.THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES
I 'NOTE: WEIR LENGTH -5'
I -
BEYOND THE CONTRACTOR'S CONTROL.
I
FACILITY CONSTRUCTION:
1 I GABION BASKETS FILLED WITH STONE TO SERVE AS THE
1. THE CONTRACTOR SHALL USE THE WET POND AS AN E&S CONTROL STRUCTURE, IF SHOWN IN THIS MANNER ON THE APPROVED ESC PLANS. IF
I INTERNAL DAMS. BASKETS TO BE ANCHORED BELOW GRADE.
APPLICABLE, THE WET POND SHALL SERVE AS A SEDIMENT BASIN DURING PROJECT CONSTRUCTION. IF THIS IS DONE, THE VOLUME SHALL BE BASED
ON THE MORE STRINGENT SIZING RULE (EROSION AND SEDIMENT CONTROL REQUIREMENT VS. WATER QUALITY TREATMENT REQUIREMENT).
INSTALLATION OF THE PERMANENT RISER SHALL BE INITIATED DURING THE CONSTRUCTION PHASE, AND DESIGN ELEVATIONS SHALL BE SET WITH
FINAL CLEANOUT OF THE SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION WET POND IN MIND. THE BOTTOM ELEVATION OF THE
WET POND SHALL BE LOWER THAN THE BOTTOM ELEVATION OF THE TEMPORARY SEDIMENT BASIN. APPROPRIATE PROCEDURES SHALL BE
IMPLEMENTED TO PREVENT DISCHARGE OF TURBID WATERS WHEN THE BASIN IS BEING CONVERTED INTO A WET POND.
2. WET PONDS SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE POND IS COMPLETELY STABILIZED. IFTHE
L
PROPOSED POND SITE WILL BE USED AS A SEDIMENTTRAP OR BASIN DURING THE CONSTRUCTION PHASE, THE CONTRACTOR SHALL DE -WATER,
DREDGE AND RE -GRADE THE SEDIMENT CONTROL FACILITYTO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE.
3. THE CONTRACTOR SHALL ASSEMBLE CONSTRUCTION MATERIALS ON -SITE, MAKING SURETHEY MEET DESIGN SPECIFICATIONS AND ARE PREPARED
AT STAGING AREAS WHEN POSSIBLE.
4. THE CONTRACTOR SHALL CLEAR AND STRIP THE PROJECTAREA IF REQUIRED TO THE DESIRED SUB -GRADE. Q
GENERAL SWM NOTES:
5. THE CONTRACTOR SHALL INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION, INCLUDING TEMPORARY DE -WATERING DEVICES AND STORMWATER
1.. STATE APPROVED TRASH RACKS AND ORIFICES SHALL BE INSTALLED ON ALL ORIFICE
DIVERSION PRACTICES. ALL AREAS SURROUNDING THE POND THAT ARE GRADED OR DENUDED DURING CONSTRUCTION MUST BE PLANTED WITH
OPENINGS.: SEE DETAILS ON THIS SHEET, OR EQUIVALENT, FOR INSTALLATION.
TURF GRASS NATIVE PLANTINGS OR OTHER APPROVED METHODS OF SOIL STABILIZATION.
z.. CONCRETE FOUNDATIONS SHALL BE INSTALLED ON ALL RISER STRUCTURES MEETING
6. THE CONTRACTOR SHALL ALSO EXCAVATE THE CORE TRENCH AND INSTALLTHE SPILLWAY PIPE.
MINIMUM VESCH 3.14 SPECIFICATIONS..
7. THE RISER AND APPLICABLE OUTFLOW STRUCTURES SHALL BE INSTALLED, AND THE CONTRACTOR SHALL ENSURE THE TOP INVERT OF THE
3. CONTRACTOR SHALL HIRE A THIRD PARTY GEOTECHNICAL ENGINEER TO ENSURETHE
OVERFLOW WEIR IS CONSTRUCTED LEVEL ATTHE DESIGN ELEVATION.
EMBANKMENTS ARE STRUCTURALLY SOUND.THE EMBANKMENTS SHALL HAVEA COMPACTED
8 THE CONTRACTOR SHALL CONSTRUCT THE EMBANKMENT AND ANY INTERNAL BERMS IN 8-TO 12-INCH LIFTS COMPACTION SHALL BE COMPLETED
Elevation
(ft)
Area of Wetland
Cell Contours (sf)
Volume
(cf)
428
430
432
-
-
433
377
0
434
655
510
436
-
-
438
440
Elevation
(ft)
Total Facility Area
Contours (sf)
Volume
(cf)
428
579
0
430
1,545
2,047
432
2,948
6,465
433
4175
10,008
434
6,537
15,320
436
10,163
31,888
438
14,374
56,303
440
19,395
89,947
PROPOSED
GREENWAY, TYP.
_ PROPOSED VARIABLE WIDTH / \
SWM & ACCESS EASEMENT / \
/ COINCIDES WITH SWM FOREST. \
& OPEN SPACE EASEMENT.
10' WIDE, 12" DEEP \
FLOW PATH >3:1 AQUATIC BENCH
= \
FLOW LENGTH-z W DTH- 8'
( 45l 7 )
z
a
o /
m
u .
- .CONTRACTOR SHALL USE OQ
X
_ NUTRIENT RICH TOPSOIL FOR THE
AQUATIC BENCH & SHALL ENSURE
i . HEALTHY GROWTH OF PLANTINGS j..
DURING THE FIRST YEAR (TYP.)
BLOCKAND 1 q,-0
PROPERTY LIMITS
Q
S
STR 30
O
TR 30
TOP OF DAM ELEV.=433.5o' ADJACENT i ,;� PRQPOSE TR 04
TO THE WETLANDS CELLTHE
WETLANDS CELL's LOWER TOP OF DAM%
v
ELEVATION CONVEYS FLOWS FROM
/ WET POND DETAIL:pNo.
3+88SCALE I"=30'I-IMITS OFSTREAM, TYP.PROPOSED FLATVDOT CLASS AI COARSE AGGREGATE OUTLETPROTECTIONw/GEOTEXTILEFILTER
FABRIC UNDERLAYMENT FABRIC TO BE "oru 8/04/20
KEYED INTO EX. GROUND 9" MIN. AT 0
ENDS &ALONG PERIMETER. FABRIC TO
S
OVERLAP MIN. OF 9" \, S70NAL t7i�G
(L=10', W1=6', W2-6, D=18" MIN.)
PROPOSED SWM
FACILITY & ACCESS
.EASEMENT COUNTY DEFINED
f-MANAGED STEEP
SLOPES, TYP.
in to
z (Al z
Z
w w w
w
I.
g
0 f 0
PROPOSED z ' WIDE VDOT CL. At RIPRAP S O O O O
LINED EMERGENCY SPILLWAY CREST- - U
ELEV.-.8.z'. SPILLWAY TO HAVE :1 SIDE Z
43 5 4 LL
SLOPES FOR VEHICULAR TRANSITIONS. O E J Z z z z
\ O= O
\ Q " I F- O
\_ a r U U U U U G U
U g o 0 0
THE WETLAND CELL TO THE MAIN CELL j� W W W Z Lu CO N M
C, to
a0' WIDE TOP OF DAM O Z Q '" N
SEE THIS SHEET �" - / I �LEVATION=44o' i o-'
FOR SCALED y8 Im. l - " ( H z w
Ww w w w
a
> d a d
Y Lu �. to
PROFILES OF THE N V7 LA
3 1 Iljyy y w w Z
ALIGNMENTS (TYP.) WETLAND CELL �W I � y I �// � S Z Z Z
PROPOSED z'WIDE 18" TALL DIVERSION a
g g 5
1 00
F' `
I.. H
D a a
�O,PF I CONSTRUCTED OF GABION BASKETS 7 p O O O
.� � Y FILLED WITH STONE. DIVERSION TOP TO 6 Cto / 26Sf ��<< �;:: ' EXTEND MWSE. SEE GENERAL to
z 1 W w Lu Lu Lu
SWM NOTE #50N THIS SHEET. w w w
C � K
N 3 OF c
PROPOSED VARIABLE WIDTH \ : � I - / kNTY DEFINED '
SWM& ACCESS EASEMENT / \ ��' ( (PRESERVED STEEP
COINCIDES WITH LOT LINES \ j /h' , 5 77 0� `' SL PES, TYP. (IMPACTS\
SHORTEST FLOW PATH (106') /
8'WIDE FOREBAY RE FOR EXTENSION
LENGTH ALL R G H 8 (Si > 08 SPILLWAY CREST OVERALL
- OF STELLA LN.)
ELEV.=433.$'
DAM LOCATED BETWEEN THE FOREBAY AND WETLAND CELLS TO HAVE A TOP
/ ELEVATION OF 434.00' WITH AN 8' WIDE WEIR (CREST ELEV.=433.50'). WEIR Y I
TO CONVEY FLOWS FROM FOREBAY CELL TO WETLANDS CELL. \ \
/ TOP OF DAM ELEVATION ADJACENT TO FOREBAY CELL - \
1SHALL BE 434.00'. DAM TO CONVEY FLOWS FROM THE o' WIDE GRADED, GRASS LINED ACCESS ROAD
\ _ TO RISER FOR POTENTIAL MAINTENANCE
FOREBAY CELL TO THE MAIN CELL VIA OVERTOPPING, r` \
2' WIDE INTERIOR DAM CONSTRUCTED OF GABION BASKETS FILLED WITH STONE. GABION = \ PROPOSED & DEEP FOREBAYTO PROVIDE \
BASKETS FILLED WITH STONE TO EXTEND 3'' BEYOND THE EDGE OF THE POND's PERIMETER _ "P' PRETREATMENT UPLAND OF MAIN CELL &
AND BE ANCHORED 2' BELOW POND WITH A BOTTOM ELEV.=326.00. TYP. - I 1'. WETLAND CELL. FOREBAY HELPS FURTHER REDUCE
PROPOSED 2'DEEP VDOT CL. - f THE RISK OF CLOGGING IN THE LOW -FLOW ORIFICE.
h At V-NOTCHED RIPRAP LINED SEE GENERAL SWM NOTE ON THIS SHEET.
5
/ ✓CHANNELw :1 SIDE SLOPES
1 ] I
AQUATIC BENCH (ZONE 1) PLANTING SCHEDULE FOR SWM FACILITY
F�7
BOTANICAL
COMMON NAME
SIZE
SWM FACILITY
ZONE I PLANTINGS
PROPOSED
COVERAGE (sf) - /GREENWAY,TYP. I
I
EC
PONTEDERIA PECTINATUS
POND WEED
600
VA
VALISNERIAAMERICANA
WILD CELERY
375
EC
ELODEACANADENSIS
WATERWEED
1,076
CLAY CORE E WITH A CUTOFFTRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON THIS - - --- - - - --
R
460 460
018" ADS HDPE DRAIN BASIN WITH DOME GRATE TO SERVE AS THE SWM RISER
IN LIFTS WITH APPROPRIATE EQUIPMENT. THE CONTRACTOR SHALL ALSO ADHERE TO THE CLAY LINER SPECIFICATIONS OUTLINED IN TABLE 14.4 SHEET. ALL EXISTING AND PROPOSED FILL MATERIAL AND PROPOSED CONSTRUCTION SHALL
BELOW: BE APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION
TO REMAIN COVERED DURING CONSTRUCTION TO MINIMIZE DISTURBANCES PROPOSED STR. oz
Table 14.4. Clay Liner Speci(carions OF THE EMBANKMENTS AND FILL AREAS, AND PRESENT DURING THE CORE SAMPLING. TO THE EMBANKMENT. AT THET ME OF THE FACILITY's CONVERSION FROMA ESC RISER(RIM=437.z5') TO BE MODIFIED.
Property
Test Method
Unit
S ciPka13on
Permeability
ASTM D-2434
CmJsec
1 x 10
Plasticity Index of Clay
ASTM D4231424
%
Not less than 15
Liquid Limit of Clay
ASTM D-2216
%
Not less than 30
Clay Particles Passing
ASTM D-422
%
Not less than 30
Clay CQmPacton
ASTM D-2216
%
95% of standard prWor density
4. THE DOWNSTREAM EMBANKMENT SIDE SLOPES. OF ALL PERMANENT FACILITIES SHALL HAVE
MAXIMUM 3:1 SLOPE.
S. STONE DIVERSION TO SLOW THE INFLOW OF WATER TO THE RISER, AND TO PROVIDE FURTHER
SEDIMENT FILTRATION. IN ADDITION TO THE LOW -FLOW ORIFICE's TRASHRACK, THE STONE
DIVERSION RING. SURROUNDING THE RISER PROVIDES A zND LAYER OF PROTECTION TO
REDUCE THE RISK OF CLOGGING IN THE LOW -FLOW ORIFICE.
6. THE PROPOSED. LEVEL II WET POND SHALL INCLUDE AN AERATOR. SEE DETAIL ON SHEET 22.
Source: Virginia Stormwater Management Handbook (19N)
9. EXCAVATION AND GRADING TO THE APPROPRIATE ELEVATIONS AND DESIRED CONTOURS SHALL BE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES
OF THE POND.
VA DEQ STORMWATER DESIGN SPECIFICATION NO.'14
10.THE EMERGENCY SPILLWAY SHALL BE CONSTRUCTED IN CUT WHERE POSSIBLE OR IN STRUCTURALLY STABILIZED SOILS,
11THE OUTLET PIPES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION, SHALL BE INSTALLED.
12,EXPOSED SOILS SHALL BE STABILIZED WITH TEMPORARY SEED MIXTURES APPROPRIATE FOR THE POND BUFFER. ALL AREAS ABOVE THE NORMAL
POOL ELEVATION SHALL BE PERMANENTLY STABILIZED BY HYDROSEEDING OR SEEDING OVER STRAW.
SECTION 4: TY-PIC.0 DETAMS
11THE POND BUFFER AREA SHALL BE PLANTED WITH A VEGETATIVE GROUND COVER AND THE CONTRACTOR SHALLTHEN INSTALLTHE APPROPRIATE
BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS.
wPER SHELF WETLAND ILEVEL 2t
14.ALL CONSTRUCTION SHALL ADHERE TO THE VIRGINIA DEQ POST CONSTRUCTION BMP CLEARINGHOUSE REQUIREMENTS SET FORTH IN DESIGN
WETLAND CE.L NFrOWFRCMFORESAY
MAX TV DEPTH - 12'
SPECIFICATION NUMBER 14.
FOREELAY OVEAFLOW ZFER TO TABLE 142FCMVOLUW
IPIEFER TO TABLE REOUIREbtENT51 g,AFET�. 9E^!CH
-
FACILITY MAINTENANCE:
14.2 FOR VOLUME
REOLrREMEN13)
MAINTENANCE OF THE WET POND(S) IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE POND.
su cry+
DURING THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND
�}
THE OWNER THEREAFTER:
1. MEASURE SEDIMENT ACCUMULATION LEVELS IN THE FOREBAY.
_
1. MONITOR THE GROWTH OF WETLANDS, TREES AND SHRUBS PLANTED, AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE„
Lr tI I/:J
AND NOTE THE PRESENCE OF ANY INVASIVE PLANT SPECIES, AS APPLICABLE.
L -"
2. INSPECT THE CONDITION OF STORMWATER INLETS TO THE POND FOR MATERIAL DAMAGE EROSION OR UNDERCUTTING.
L(NV FLOW
-
3. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY
GROWTH, OR GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY.
«
ISER
4. INSPECT POND OUTFALL CHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, ETC.
5. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING., JOINT FAILURE LEAKAGE CORROSION OR OTHER FAILURES.
6. INSPECT CONDITION OF ALLTRASH RACKS OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION OR OTHER
FAILURES.
'` - -- .,-
HIGH PLOW
WET POND
7. INSPECT MAINTENANCE ACCESS TO ENSURE IT 15 FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND LOCKS P,DNI> AERATION FLOW PATH ANOPOOL GEOMETRY
1iND'cATAB'2 C-FER TO TABLE 14 2 FOw LI AND
CAN BE OPENED AND OPERATED. anEFER To LE IS
8. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE POND FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING, AND MAKE FOR L- AND L2 `w1°0 BENCH L2 REOLaREMENTS)
NEEDED REPAIRS IMMEDIATELY. REOLXOEMENTS) SAFETY BF`Nrx
9.. REPAIR AND REPLACE AS NECESSARY. SAFET'v.AwATIc
Rill
10.PLEASE SEE THE TABLE BELOW FOR ADDITIONAL MAINTENANCE MEASURES ABOVE AND BEYOND THOSE OUTLINED ABOVE:
Table 14.6. Typical Wet Pond Maintenance Tasks and Fi"Itericy PLANMEW
Maintenance Rems
Frequency
«
Mowing -twice a year
Quarterly or after major stomis
•
Remove debris and blockages
(>7 inch of rainfall)
It
Repair undercut eroded, and bare soil areas
•
Mowing
Twice a year
•
Shoreline cleanup to remove trash, debris and
floatables
•
Afull mamtena nce inspection
Annually
•
Open up the riser to access and test the valves
•
Repair broken mechanical components, d needed
One time during the
•
5r19s
Pond buffer and aquatic bench reinforcement plantings
second ar ldbwi onsiuclach
•
Forebary Sediment Removal
Every 5 to 7 years
•
Repair pipes,the riser and spit "y as needed
From 5 to 25 years
FACILITY INSPECTION:
MULTIPLE INSPECTIONS ARE CRITICAL TO ENSURE THE BASINS ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS
DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO
INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER AND
INSPECTOR, DURING THE FOLLOWING STAGES OF THE EXTENDED DETENTION BASIN'S CONSTRUCTION PROCESS:
1. PRE -CONSTRUCTION MEETING
2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS)
3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS)
4. WET POND INSTALLATION (E.G., INTERIM AND FINAL ELEVATIONS)
S. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(S).
6. PLANTING AND VEGETATIVE STABILIZATION PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT)
7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE)
NO REFER IC TABLE 1A 2 4 DESIGN OPEC NO .3 OOrATRJI:Tp D
TE WEl AN
F3ECTIDAl6 FOR L1 AND L2 V0.UME MID &T[YTAGE DEPTH CRITERIA M WETLAND CELL
OVERFLryN TO WEi POND NOHIAN
PCCJL 6CFET'9ENCu
CNANtJEL PROTECTON AQUATIC S ENOH
TV, NOFII,AAL FCX1L
_ ` r
FQI>6BAY
--i
-OW FLOW TO UPPER SHELF WF':.:a D - - ar.- 7 ,-1Trr II- - r-
,C-•EVERSE 9LCPE LOW FLOW
W'PWE -
PROFILE iV: 17-1 ,;PPEF SHELF t1-;ETLAh;D
B.AFETY 9ENR::H
AQIIATY: HFNC:H
C,HAIWJEL FROTEQTION
N
NOFM.IAL POOL
HIGH FLCW TO WET POND NORMAL I IIHI IF=rr�Hf ) I1�Will
1- I-
-'�IIF 1II i�rl i� II�-� FtbE 3LtmN�E LOW FLOW
NOTE HEITTI TO 9EGTION n FOR Ll AND L2 NORIMAIL POOL VOLUME
4NE-SEPIH ANo Tv C� RiDTECTgN=RtADE D ,*
PROFILE (W(TNOUT UPPER SHELF WETLAND)
Figure 14.1. Wet Pond Design Schematics
STONE
TEMP. SEDIMENT
BASIN TO A PERMANENT SWM FACILITY, THE SWMIRISER's
CONTRACTOR SHALL INSTALL A VDOT STD.MH-1
TOP AND ORIFICES SHALL BECOME OPERATIONAL.
_
TOP ON THE 048" CONCRETE BASE / RISER AT THE
SWM RISER RIM ELEVATION=437.25.
TIME OF THE FACILITY's CONVERSION. STR. 302
ONE (1) 01-',-g" LOW FLOW ORIFICE (INV=434,00')
SHALL REMAIN TO RECEIVE RUNOFF FROM STR. 304. 4 c cJ
FIVE (5)-0€" MID FLOW ORIFICES (INV=436.50')
EXISTING
GRADE.
450
PROPOSED z'WIDE, 18" TALL
\
DIVERSION CONSTRUCTED OF
GABION BASKETS FILLED WITH
/
ROPOSED
445
.
ABOVE
DIVERSION
THE MWSE.
TOP TO EXTEND
SEE GENERAL,
GRADE 445
TOP OF DAM ELEV.=433-So'ADJACENT
SWM
NOTE'
SON THIS SHEET.
TO THE WETLANDS CELLTHE
WETLANDS CELL's LOWER TOP OF DAM
CONTRACTOR SHALL INSTALL
ELEVATION CONVEYS FLOWS FROM
THE WETLAND CELL TO THE MAIN CELL.
_ _ \
EMBANKMENT IN ACCORDANCE
w/ THE DESIGN SHOWN ON
440
THESE PLANS. 440
100-yr PEAK WSE=438.90
T
- - 8' WIDE FO
10 yr PEAK WSE-438.16
EBAY
10' WIDE 1z" DEEP
2-yr PEAK WSE=436.67 SPILLWAY CREST
AQUATIC BENCH
� O-
\
1-yr PEAK WSE=436.22 ELEV.-43
.5'
Una
Q
35
I
435
oQ
PROPOSE 1
STR 303
\
_
WSE=4.'
.
8.00 LF OF 08"
HDPE @ 11.50%
_
(INV IN=42
PROPOSED 6' DEEP FOREBAY
INN OUT=42.10)
8.10
(FLOOR ELEV=428')TO PROVIDE
PRETREATMENT UPLAND OF MAIN
STR 301 \ 430
445
CELL & WETLAND CELL. FOREBAY
- 141.83 LF OF 024" -
HELPS FURTHER REDUCE THE RISK
CL. III RCP @ 8.46% PROPOSED 25' WIDE VDOT CL, AI
OF CLOGGING IN THE LOW -FLOW
(INV IN=428,00; RIPRAP LINED EMERGENCY
ORIFICE. SEE GENERAL SWM NOTE
INV OUT=416.00) SPILLWAY CREST ELEV,=438.25'..
PERMANENT
DEP
#5 ON THIS SHEET.
425
\ SPILLWAY TO HAVE 4:2 SIDE SLOPES
FOR VEHICULAR TRANSITIONS.
POOL 425
H=6'(FLOOR
440
EL
DAM LOCATED BETWEEN THE FOREBAY AND
EV.=428.0')
WETLAND CELLS TO HAVE A TOP ELEVATION
OF 434.00' WITH AN 8' WIDE WEIR (CREST
TO PREVENT FLOTATION THE RISER BASE PROFILE SCALES
AND BARREL CONNECTIONS SHALL BE \ 1"=5' (V)
/
PROP.
ELEV.=433.50
). WEIR TO CONVEY FLOWS
FIRMLY EMBEDDED 6" INTO THEIR 18"
FROM FOREBAY
CELL TO WETLANDS CELL..
THICK REINFORCED CONCRETE
420
FOUNDATIONS. THE CONC. FOUNDATIONS
SHALL BE BURIED -BELOW -GROUND. STR.
2' WIDE INTERIOR DAMS 304's CONC. FOUNDATION SHALL BE
CONSTRUCTED OF GABION BASKETS 3'1_x3'Wx18"D AND STR 306's CONC.
ILLED WITH STONE SHALL EXTEND 3' FOUNDATION SHALL BE 8'Lx8'Wx18"D
BEYOND THE EDGE OF THE POND's -
PERIMETER AND BE ANCHORED 2' PROPOSED RIPRAP TO EXTEND TO STREAM -
BELOW POND BOTTOM AT BANKS AS SHOWN. CONTRACTOR SHALL
- NOT DISTURB THE STREAM AND WETLANDS
ELEV..00. TYP.
PROPOSED FLAT VDOT CLASS At COARSE -
AGGREGATE OUTLET PROTECTION w/ GEOTEXTILE
FILTER FABRIC UNDERLAYMENT. FABRIC TO BE KEYED
INTO EX. GROUND 9" MIN. AT ENDS &ALONG
PERIMETER. FABRIC TO OVERLAP A MIN. OF 9"
410
WET POND SECTION (L=10', W1=6', W2=6', D=18" MIN.)
> >
J LB
O N
00 '�
00 Ln
N
W W
00
p O
O
Ln
oC
I,r)
d-
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W
�
�
lOi
n-L. 1_Lnn o-Lnn ')lain 'K_Lnn 'K_L
i
IPROPOSED
OS EDSWM O
I ! FACILITY &ACCESS
EASEMENT
SECTION A-9: TITICAL GRAPffiCAL DETAILS
Homogeneous fill
I
"\
I (At off trench-4' below salable,
nq enal
Shcamck L----------- i
TYPICAL HOMOGENEOUS E EOUS
EMBANKMENT
TroraiGan fill
ock or gravel
-Pile WW Coarseh r •.. .. .
Perforated collector orauW sets
ourdation dmin Blanket drain
FOUNDATION DRAIN BLANKET DRAIN
4run
aaet
Rock aralel
9r
e«i Lac drain
•°R
�,TmnsiUon filter Tmneition finer
CHIMNEY DRAIN TOE DRAIN
Figure A-Ia. 6omogeneom Embankments w Seepage Controls
445
io' WIDETOI
OF DAM
ELEV.=440'
1 =50 (H) GRAD1- -,' 2rJ
420 435 435
PROPOSED VDOT I
STD. EW-1
ING
G-
415 430
410
425
WET
SPILLWAY
POND
425
O
O r
E�uu0jiLo
Nt
�
�
nisn
EMBANKMENT NOTES:
AFTER AN INVESTIGATION OF THE SITE's SOILS, SITE VISITS, AN
ANALYSIS OF THE SURVEYED TOPOGRAPHY AND AN EXAMINATION OF
VA DEQ APPENDIX A: EARTHEN EMBANKMENT, THE APPLICANT HAS
PROVIDED A COMPREHENSIVE EMBANKMENT DESIGN THAT DOES NOT
NEED A GEOTECHNICAL STUDY AT THIS TIME. SUCH IS THE CASE DUE TO
THE PRECAUTIONARY EMBANKMENT DESIGNS PROPOSED. A
SUMMARY OF THE EMBANKMENT DESIGN REQUIREMENTS ARE LISTED
BELOW, MANDATING THE CONTRACTOR MEETTHESE REQUIREMENTS
AT A MINIMUM.
THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A
CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON
IN THIS PLAN. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC-3
MATTING & THE REMAINING DISTURBED SLOPES SHALL BE STABILIZED
WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML,
CL, SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER
NON COMPACTING SOIL. COMPACTED FILLSHALL BE PROCTOR
MAXIMUM DRY DENSITY ASTM D698 AND HAVE A MINIMUM OF 95%
OF MAXIMUM DRY DENSITY AND 2%OF OPTIMUM MOISTURE
CONTENT. ALL FILL MATERIAL AND CONSTRUCTION SHALL BE
APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING
THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS.
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SHEET NO. ❑
18
N
41
s
y. COUNTY OF ALBEMARLE
` Department of Community Development
- � ildf t�•tf'
Construction Record Drawings (As -built) for VSMP
The following is a list of information required on construction record drawings for
stormwater facilities (reference Water Protection Ordinance 17-422). It is preferable that the
construction record drawing be prepared by someone other than the designer. Please do not
provide design drawings as construction record drawings.
A. A signed and dated professional seal of the preparing engineer or surveyor.
B. The name and address of the firm and individual preparing the drawings on the title sheet.
C. The constructed location of all items associated with each facility, and the inspection records to verify
proper dimensions, materials and installation. The items include, but are not limited to the following:
1. Inspection Records and photographs for pipe trenches and bedding, including underdrains.
2. Video Pipe Inspection for any pipes which are not accessible or viewable.
3. Updated Location with geo-coordinates of all facilities.
4. Verified Drainage _Area maps for the drainage area treated, and for drainage to the facilities.
5. Current physical and topographic survey for all earthen structures. Ponds should include a survey
of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required
for alterations from the design.
6. Plants, location and type.
7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the
installed type of drainage structures, culvert/pipe size, weirs, materials, inlets or end treatment(s),
inlet and outlet protection, alignment and invert elevations compared to design.
8. Computations: For significant deviations from design, provide sealed computations verifying that
the as -built condition is equivalent or better than design.
9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical
sections and linings.
10. Easements - Show all platted easements with dead book references labeled. Facilities and drainage
must be within platted easements. Provide copies of recorded documents.
11. Guardrail, fences or other safety provisions - Display the constructed location of all safety
provisions; fences, guardrail, including the type, length and applied end treatments, compared to
design.
12. Material layers - biofilter media, stone layers, sand layers, keyways and cores must be verified as to
material types and depths. Include inspection reports, boring or test pit reports and materials
certifications. Biofilter media must be an approved state mix.
13. Access roads - show location of access roads, surface treatment, drainage, etc, as applicable.
14. Compaction reports are required to verify fill compaction in dams.
15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning.
DRAINAGE DESCRIPTIONS
STR.
NO.
PIPE INFORMATION
INLET INFORMATION
COMMENTS
DIA.
in.
LENGTH*
ft.
SLOPE
o/a
INVERT
IN
INVERT
OUT
MATERIAL
INLET
TYPE
SLOT
LENGTH
RIM*
ELEVATION
304
SWM Riser
18"
437.25
303
8
8.00
11.50%
429.02
428.10
HDPE
302
ESC Riser
48"
437.25
VDOTSTO. IS-1 REaD
301
1 24
141.83
8.46%
428.00
416.00
RCP3
-
UGD
Contech MH
442.50
VDOTSTD. IS-1 REaD
412
18
5.00
1 4.00a/o
430.98
430.78
HDPE
405
MH-1
441.50
VDOT STD. IS-1 REQ'D
407
24
65.33
11.43%
430.68
423.21
RCP3
406
MH-1
-
437.33
VDOT STD. IS-1 REQ'D
405
24
31.20
16.00%
419.21
414.22
RCP3
404
MH-1
-
425.65
VDOTSTD. IS-1 REaD
405
24
61.00
16.00%
410.22
400.46
RCP3
402
MH-1
-
406.50
VDOTSTD. IS-1 REaD
401
24
48.00
2.00%
396.96
396.00
RCP3
Bypass
-
443.16
VDOT STD. IS-1 REQ'D
411
12
5.00
16.00%fl436.70
438.20
HOPE
410
MH-1
440.90
MODIFIED MH-1
405
12
46.05
1.78%
435.88
HOPE
TRASHRACKS SHALL BE INSTALLED ON ALL ORIFICES, INCLUDING THOSE LOCATED ALONG THE
WEIR PLATE WITHIN THE UNDERGROUND DETENTION SYSTEM, IN ACCORDANCE w/ THE DETAILS
SHOWN IN THIS PLAN (OR EQUIVALENT).
DETENTION SYSTEM's WEIR PLATE TO BE PRE -MANUFACTURED AND DELIVERED TO THE SITE.
WEIR PLATE SHALL BE SECURELY AFFIXED TO THE PIPE.
3. ANY RETAINING WALLS AND FOUNDATIONS CONSTRUCTED IN THE VICINITY OF THE
UNDERGROUND DETENTION SYSTEM SHALL BE REVIEWED AND APPROVED BY THE ARCHITECT
AND A GEOTECHNICAL ENGINEER. UNDER NO CIRCUMSTANCES SHALL ANY PORTION OF THE
UNDERGROUND DETENTION SYSTEM BE INSTALLED BENEATH PROPOSED STRUCTURES OR WITHIN
PUBLIC RIGHT-OF-WAY.
THE PROPOSED PUBLIC RIGHT-OF-WAY AND ROAD SHALL SERVE, IN CONJUNCTION WITH THE
PROPOSED SWM EASEMENT, AS THE MEANS TO ACCESS THE UNDERGROUND DETENTION
SYSTEM.
5. CONTACT COLLINS ENGINEERING (434.293.3719) REGARDING ANY QUESTIONS CONCERNING THE
UNDERGROUND DETENTION SYSTEM.
5. ALL FILL EMBANKMENT MATERIAL SHALL CONSIST PREDOMINANTLY OF SOIL AND BE PLACED IN
SUCCESSIVE UNIFORM LAYERS NOT MORE THAN 8 INCHES IN THICKNESS BEFORE COMPACTION
OVER THE ENTIRE AREA IN ACCORDANCE WITH CURRENT VDOT ROAD AND BRIDGE
SPECIFICATIONS.
7. ALL FILL SHALL BE PLACED AT 95% COMPACTION AND TESTED BY A GEOTECHNIGAL ENGINEER
TO ENSURE COMPACTION IS REACHED AND MAINTAINED.
PRIOR TO CONSTRUCTION THE CONTRACTOR SHALL TEST -DIG AT THE INLETS & OUTFALLS TO
CONFIRM THE INVERTS AND TO ENSURE THE PROPOSED GRADES CAN BE ACHIEVED.
CONTRACTOR SHALL CONTACT COLLINS ENGINEERING OF ANY DISCREPANCIES IN THE
HORIZONTAL OR VERTICAL ALIGNMENT PRIOR TO ORDERING AND CONSTRUCTION.
9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS
FOR CONSTRUCTION INDUSTRY (29 CFR PART 1926),
0. PENDING PRIOR APPROVAL BY COLLINS ENGINEERING, THE PIPE MATERIALS MAY BE
SUBSTITUTED. ANY PIPE LOCATED WITHIN PUBLIC RIGHT-OF-WAY MAY NOT BE SUBSTITUTED
AND MUST BE CL. III RCP.
1. SEE NOTES ON THE NEXT SHEET FOR ADDITIONAL BACKFILL REQUIREMENTS.
FACILITY INSPECTIONS DURING CONSTRUCTION:
CONSTRUCTION INSPECTIONS ARE CRITICAL TO ENSURE THE UNDERGROUND DETENTION
SYSTEM IS PROPERLY BUILT. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY
THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE
ENGINEER, COUNTY INSPECTOR AND CONTECH REPRESENTATIVE PRIOR TO INSTALLATION
CONTECH, OR AN EQUIVALENT PIPE MANUFACTURER, SHALL BE CONTACTED WELL AHEAD
OF THE CONSTRUCTION START DATE TO ENSURE ADEQUATE LEAD TIME FOR MATERIALS
AND DELIVERY, MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED
BY THE CONTRACTOR, WITH THE ENGINEER, COUNTY INSPECTOR & PIPE MANUFACTURER,
DURING THE FOLLOWING STAGES OF THE UNDERGROUND DETENTION SYSTEM
CONSTRUCTION PROCESS:
i. PRE -CONSTRUCTION MEETING
2.. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS)
3. EXCAVATION/GRADING(E.G., INTERIM/FINAL ELEVATIONS).
4.. WHEN THE DETENTION PIPE SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT
BEFORE STONE BEDDING IS INSTALLED.
5. AFTER STONE BEDDING IS PLACED AND COMPACTED, BUT PRIOR TO PIPE
INSTALLATION.
6. ATTHE TIME OFTHE PIPE INSTALLATION.
7. AFTER PIPE INSTALLATION, BUT PRIOR TO PLACING BACKFILL& FILL OVER THE SYSTEM.
8. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE)
PLEASE ALSO SEE BELOW, UNDER FACILITY MAINTENANCE, FOR REQUIRED INSPECTIONS
AFTER INSTALLATION IS COMPLETE.
FACILITY INSPECTIONS & MAINTENANCE AFTER
CONSTRUCTION:
THE FOLLOWING MAINTENANCE TASKS SHALL BE PERFORMED BYTHE CONTRACTOR IN
THE FIRST YEAR FOLLOWING THE INSTALLATION OF THE UNDERGROUND DETENTION
SYSTEM.
1. FOR THE FIRST YEAR FOLLOWING CONSTRUCTION, THE SITE SHALL BE INSPECTED BY
THE CONTRACTOR QUARTERLY AND AFTER STORM EVENTS THAT EXCEED 1//21NCH OF
RAINFALL.
2.. THE CONTRACTOR SHALL LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING
DRAINAGE AREA AND AROUND THE UNDERGROUND DETENTION SYSTEM AND MAKE
SURE THEY ARE IMMEDIATELY STABILIZED. CONTRACTOR SHALL SPOT RESEED AS
NECESSARY AND ENSURE ADEQUATE SITE COVERAGE IS PROVIDED WITHIN THE FIRST
YEAR. ATTHE QUARTERLY INSPECTIONS, AND AFTER EACH RAINFALL EVENT IN EXCESS
OF;", THE CONTRACTOR SHALL PERFORM THE ANNUAL MAINTENANCE TASKS
DESCRIBED BELOW IN #3..
AFTER THE FIRSTYEAR THE OWNER SHALL PERFORM FOLLOW-UP INSPECTIONS
ANNUALLY, AND AFTER EACH SIGNIFICANT RAINFALL EVENT:
3. ASPIRING MAINTENANCE INSPECTION AND CLEANUP SHALL BE CONDUCTED
ANNUALLY, THE MAINTENANCE PROGRAM FOR THE UNDERGROUND DETENTION
SYSTEM SHALL INCLUDE CLEANING ITANNUALLY OF TRASH, DEBRIS & SEDIMENTAND
ENSURING THE INTEGRITY OFTHE WEIR PLATE, TRASH RACK AND OUTFALL & INFLOW
PIPES.. THE OWNER SHALL ENSURE THE SYSTEM IS OPERATING AS INTENDED AND IS
NOT CLOGGED OR DAMAGED.. THE OWNER SHALL IMMEDIATELY CLEAN & REPAIR THE
FACILITY AS NECESSARY AND SHALL PAY SPECIAL ATTENTION TO THE INLETAND
OUTLET LOCATIONS. THE ACCESS MANHOLES SHALL BE USED FOR INSPECTION AND
MAINTENANCE.
Oizo" WEIR PLATE DETAIL
SCALE: D."=5'
OVERFLOW WEIR IS HYDRAULICALLY
EQU IVALENT TO AN ORIFICE WITH AN
APPROX. DIAMETER OF 013.69"
MANUFACTURE / INSTALL TWO (2) 06" HIGH-FLOW-�
ORIFICES IN THE STEEL PLATE (INVERT ELEVATIONS 438.751
MANUFACTURE / INSTALL THREE (3) 06" MID -FLOW
ORIFICES IN THE STEEL PLATE (INVERT ELEVATIONS 438,00')
INSTALL TRASH RACKS ON ALL
ORIFICES, TYP. SEE THIS PLAN
FOR DETAIL, OR EQUIVALENT.
MANUFACTURE INSTALL ONE 1. 02"LOW-FLOW-
ORIFICE IN THE STEEL PLATE ATTHE LOW POINT OFTHE
DETENTION SYSTEM (INVERT ELEVATION 431.001
1/2" zinc plated :nook
attached With 9JB- faltoner
118" dim, hales
Isometric
Ir41' HOPE plate (optional)
all c.IrvuLlL3n
awl%tea
DEBRIS DEBRIS CAGE
ELEV.=441.00'
IN ADDITION TO THE STATE -APPROVED TRASHRACK, THE CONTRACTOR SHALL AL
INSTALL A SECONDARY PROTECTION MEASURE TO REDUCE THE RISK OF CLOGGIN
THE LOW -FLOW ORIFICE.. THE CONTRACTOR SHALL ALSO INSTALL A METAL SCREE
SURROUNDING THE LOW -FLOW ORIFICE AND TRASHRACK.THE METAL SCREEN SH
INSTALLED WITH A MINIMUM SEPARATION OF12" (MAXIMUM SEPARATION OF36")
BETWEEN THE SCREEN AND THE LOW -FLOW ORIFICE's TRASHRACK.
NYLOPLAST DRAIN BASIN WITH DOME GRATE
(FOR STR. 304- SWM RISER)
(1,2) INTEGRATED DUCTILE IRON
GRATE TO MATCH BASIN O.D.
s
MINIMUM PIPE BURIAL
DEPTH PER PIPE
MANUFACTURER
(3) VARIABLE INVERT HEIGHTS RECOMMENDATION
AVAILABLE (ACCORDING TO (MIN. MANUFACTURING
PLANSRAKE OFF) REQ. SAME AS MIN. SUMP)
(4) VARIOUS TYPES OF INLET 8 OUTLET ADAPTERS
AVAILABLE: 4' -36' FOR CORRUGATED HOPE
(ADS 14-121HANCOR DUAL WALL, ADSMANCOR
SINGLE WALL), N-12 HP, PVC SEWER (EX: SDR 35).
PVC DWV(EX: SCH 40), PVC 0900IC905,
CORRUGATED & RIBBED PVC
WATERTIGHT JOINT
(CORRUGATED HOPE SHOWN)
f\I \
1 - r - 30' DOME GRATES SHALL BE DUCTILE IRON PER ASTUAS36
GRADE 70-SU5.
2 - 4' & 10' DOME GRATES FIT ONTO THE DRAW BASINS WITH THE USE
OFA PVC BODY TOP. SEE DRAWING NO.7001-110-M.
3 • DRAIN BASIN TO BE CUSTOM MANUFACTUFEDACCORDWGTO PLAN
DETAILS. RISERS ARE NEEDED FOR BASINS OVER 04' DUE TO SHIPPING
RESTRICTIONS. SEE DRAWING N0. 7001-11D-M,
4 - DRAINAGE CONNECTION STUB JOINT TIGHTNESS SHALL CONFORMTO
ASTM 03212 FOR CORRUGATED HOPE (ADS N42MANCOR DUAL WALL),
N-12 HP, & PVC SEWER (4'-3r)
5-ADAPTERS CAN BE MOLRITED ON ANY ANGLE (r TO 36V TO DETERMINE
MINIMUM ANGLE BETWEEN ADAPTERS SEE DRAWING 1+0. 7001-110-012.
6 - r - 30' DOME CRATES HAVE NO LOAD RATING.
(5) ADAPTM ANGLES VARIABLE
0' - 36V ACCORDING TO PLANS
4"MIN ON 8' 24'
6'MIN ON 30'&W
(3) VARIABLE SUMP DEPTH
ACCORDING TO PLANS
167 MIN ON 8" - 24', 10- MIN. ON 30'
& IT MIN- ON 36'
BASED ON MANUFACTURING REQ.)
THE BACKFILL MATERIAL SHIALL BE CRUSHED STONE OR OTHER.
GRANULAR MATER AL MEETING THE REQUIREMENTS OF CLASS I,
CLASS II, OR CLASS III MATERIAL AS DEFINED IN ASTM D2321,
BEDDING & BACKFILL FOR SURFACE DRAINAGE INLETS SHALL BE
_"
PLACED & COMPACTED UNIFORMLY IN ACCORDANCE WITH R^TM D21-
HDPP, dructu"I plastic with
2-1/8' holes and 1/4" plate
monulocLurcd by Plastic
Solutions Inc. or equal
• shown with optional plate
HOPE struclurnl plastic with
'/8" holes and 114- plate
.ufactured by Plastic
+tsons Inc or equal
PLASTIC
SOLUTIONS
INC.
445
P.O. Box 4386
Wincaester VA 22M
877-877-5727
min
18" MIN.
COVER
OVER
VDOT STD. MH-1
UGD SYSTEM,
YP.
RIM=441.50'
_ INV IN=430.78
INV IN=435.88
INV OUT=430.68
1
440
STR 411
440
(INV.
.00)
STR. 406
VDOTSTD.
MH-1
r,-,,
RI
=437.33
50
INV I
=423.21
FUTURE
G IN
INV 0
=419,21
W/L
N
435
435
ALL BE
z
o
INV=43098'
430
STR. 404
4
T_
430
VDOT ETD.
MH-1
RI
=425.62
12
LF OF 0120'
CMP
0.50%
INV I
=414.22
C?'
UPLAND
OF
PROPOSED
WEIR
INV 0
_
DO
.Ia 10
PLATE
TO PROVIDE
DETENTION
@
q�
CI
RESTRICTIVE
STEELWEIR
P
TE
425
INV=43
.00 .. SEE
THIS SHEET
FOR DETAIL.
PROPOSED
/
RADE
/
STR. 412.
/
5.00 LF OF 018"
HDPE @ 4.00%
1-0
420
XISTIN'
GRADE
Ov
0
`
b
p0
415
415
ti Q-
41 0
STR. 402
410
VDOT
TD. MH-1
RIM=406.50
INV IN=400.46
INV 0
=396.96
Pam.
r\b p0
1"'
405
0
PROPOSED VDOT
STD. EW-1
400
400
395
395
STR.401
IN
=396.00
48,OOLFOF024°
UNDERGRO
-
ND
CL. III R'
P @ 2.001%
-
D
TEN
IONS
STE IVI
PROPOSED
FLATVDOTCLASS
ICOARSE
AGGREGAI
E OUTL
PROTECT
ON w/ GE
TEXTILE F
LTER FABRIC UNDERIAYMENT.
FABRIC
0 BE KEY
D INTO EX
GROUND 9" MIN. AT
ENDS &
Q O
ALON
PERIM
ER. FABRI
TO OVERLAP A MIN
OF 9"
39 0
L=10'
W1=6' W
=G' D=181MIN.
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10-yr PEAK WSE=440.98
2-yr PEAK WSE 438.86
1-yr PEAK WSE 437.97
PROFILE SCALES
1"=50'(H)
BYPASS SYSTEM
450
450
445MODIFIED
445
VSTR
40
DOT MHlI
RIM=440.9
INV IN=438.2
INV OL
T=436.70
44077�-440
435
435
STR, 409
46•OFOl: s^/
430
430
-STR. 4�8
VDOT STD. MH-1
RIM=441.50'
INV IN 430.78
'.INV IN=435.88
INV OUT=430.68
425
/
425
420
420
>LLI >
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Lic. No. 035791
5 8/04/20
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STR. 411
(BYPASS PIPE)
5.00 LF OF 012"
HDPE @ 16.00%
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SCALE
AS SHOWN
SHEET NO.
19
0+50 1+00 1+50 2+00 2+50 3+00 3+50 3+75
0+50 0+75
HUGGER
SINGLE BAR, BAND FLAT GASKET
BOLT AND STRAP (SBBS)
7
FLAT GASKET
CONNECTION DETAIL
(SBBS)
2 2/3"xl/2" RE -ROLLED END HEL-COR PIPE
GENERAL NOTES:
1. JOINT IS TO BE ASSEMBLED PER AASHTO BRIDGE CONSTRUCTION SPECIFICATION SEC 26.4.2.4.
2. BAND MATERIALS AND/OR COATING CAN VARY BY LOCATION. CONTACT YOUR CONTECH REPRESENTATIVE FOR AVAILABILITY.
3. BANDS ARE SHAPED TO MATCH THE PIPE -ARCH WHEN APPLICABLE.
4. BANDS ARE NORMALLY FURNISHED AS FOLLOWS:
• 12" THRU 48" 1-PIECE
• 54" THRU 96" 2-PIECES
• 102" THRU 144" 3-PIECES
5. BAND FASTENERS ARE ATTACHED WITH SPOT WELDS, RIVETS OR HAND WELDS.
6. ALL CMP IS REROLLED TO HAVE ANNULAR END CORRUGATIONS OF 2 2/3"x1/2"
7. DIMENSIONS ARE SUBJECT TO MANUFACTURING TOLERANCES.
8. ORDER SHALL DESIGNATE GASKET OPTION, IF REQUIRED (SEE DETAILS ABOVE).
H-12 HUGGER BAND DETAIL
w
w
0
Lu
m
ui
w
w
a
a-
u
7
5a
5
BEDDING 3
FOUNDATION 2
PLAN
FRONT
48"0 to 90"0 FITTING REINFORCEMENT
MAY BE REQUIRED BASED ON HEIGHT OF
COVER AND LIVE LOAD CONDITION
TYPICAL MANWAY DETAIL
NOT TO SCALE
TEMPORARY COVER FOR
CONSTRUCTION LOADS
HEIGHT OF
COVER
CONSTRUCTION LOADS
FINISHED
GRADE
FOR TEMPORARY CONSTRUCTION VEHICLE LOADS, AN EXTRA AMOUNT OF COMPACTED COVER MAY BE REQUIRED OVER
THE TOP OF THE PIPE. THE HEIGHT -OF -COVER SHALL MEET THE MINIMUM REQUIREMENTS SHOWN IN THE TABLE BELOW.
THE USE OF HEAVY CONSTRUCTION EQUIPMENT NECESSITATES GREATER PROTECTION FOR THE PIPE THAN FINISHED
GRADE COVER MINIMUMS FOR NORMAL HIGHWAY TRAFFIC.
AXLE LOADS
PIPE SPAN,
INCHES
(kips)
1850 1 50-75 1 75-110 1 110-150
MINIMUM COVER
(FT)
2.0
2.5
3.0
3.0
12-42
48-72
3.0
3.0
3.5
4.0
78-120
3.0
3.6
4.0
4.0
126-144
3.6
4.0
4.5
4.5
"MINIMUM COVER MAY VARY, DEPENDING ON LOCAL CONDITIONS. THE CONTRACTOR MUST PROVIDE THE ADDITIONAL
COVER REQUIRED TO AVOID DAMAGE TO THE PIPE. MINIMUM COVER IS MEASURED FROM THE TOP OF THE PIPE TO
THE TOP OF THE MAINTAINED CONSTRUCTION ROADWAY SURFACE.
CONSTRUCTION LOADING DIAGRAM
NOT TO SCALE
SPECIFICATION FOR CORRUGATED STEEL PIPE -ALUMINIZED TYPE 2 STEEL
SCOPE HANDLING AND ASSEMBLY
A
36"0 MAX., HS-25 ACCESS CASTING
WITH GRADE RINGS AS REQUIRED, TO
BE PROVIDED AND INSTALLED BY
CONTRACTOR. MAY BE TOP MOUNTED
CMP (AS SHOWN) OR RECESSED. w
PROTECTION RIM/FINISHED ___ ___ p a
SLAB GRADE __� ��_=� VARIES 0
----- ---
4 N
° o - - I
`a -
Ij ,a
.1� 4
e
GASKET MATERIAL 0 CMP RISER
SUFFICIENT TO PREVENT m ---
SLAB FROM BEARING ON o
RISER TO BE PROVIDED BY IL
CONTRACTOR. OB 11" TYP., rn
SECTION VIEW
ACCESS CASTING NOT SUPPLIED BY CONTECH
2,
0 A
B
O
�A LO,P
REINFORCING TABLE
"BEARING
0 CMP
A
B O
REINFORCING
PRESSURE
RISER
(PSF)
24"
4'0
26"
#5 @ 10" OCEW
2,540
4'x4'
#5 @ 10" OCEW
1,900
30"
4'-6"0
32"
#5 @ 10" OCEW
2,260
4'-6" x 4'-6"
#5 @ 9' OCEW
1,670
36"
5'0
38"
#5 @ 9" OCEW
2,060
5' x 5'
#5 @ 8" OCEW
1,500
42
5'-6"0
44"
#5 @ 8" OCEW
1,490
5'-6" x 5'-6"
#5 @ B" OCEW
1,370
48
60
50"
#5 @ 7" OCEW
1,210
6' x IT
#5 @ 7" OCEW
1.270
J
#4 DIAGONAL TRIM
#4 DIAGONAL TRIM �-�^vim I BAR (TYP.4 PLACES),
II II I
BAR (TYP.4 PLACES), _
ISEE NOTE 7.
--� I I I----=
SEE NOTE 7rr-.
- I`----'1- --- Imo--tt
OVER E---- -- �-=C----� - --- ----- -- ----
---
r-
i
r
OPENING IN
PROTECTION
SLAB FOR
ACCESS
NOT TO SCALE
THIS SPECIFICATION COVERS THE MANUFACTURE AND
SHALL BE IN ACCORDANCE WITH RECOMMENDATIONS OF THE
20 MIL PE
INSTALLATION OF THE CORRUGATED STEEL PIPE (CSP) DETAILED IN
NATIONAL CORRUGATED STEEL PIPE ASSOCIATION (NCSPA)
IMPERMEABLE
THE PROJECT PLANS.
LINER OVER
INSTALLATION
TOP OF PIPE LIMITS OF
MATERIAL
AND AROUND REQUIRED
SHALL BE IN ACCORDANCE WITH AASHTO STANDARD
STONE
THEALUMINIZED TYPE 2 STEEL COILS SHALL CONFORM TO THE
SPECIFICATIONS FOR HIGHWAY BRIDGES, SECTION 26, DIVISION II
BACKFILL - - BACKFILL
F36"SEE
APPLICABLE REQUIREMENTS OF AASHTO M274 OR ASTM A929.
OR ASTM A798 AND IN CONFORMANCE WITH THE PROJECT PLANS
TYPICAL
AND SPECIFICATIONS. IF THERE ARE ANY INCONSISTENCIES OR
120" TYP. 36" TYP. BACKFILL DETAIL
PIPE
CONFLICTS THE CONTRACTOR SHOULD DISCUSS AND RESOLVE
NOTES
WITH THE SITE ENGINEER.
_
- -
THE CSP SHALL BE MANUFACTURED IN ACCORDANCE WITH THE
APPLICABLE REQUIREMENTS OF AASHTO M36 OR ASTM A760. THE
IT IS ALWAYS THE RESPONSIBILITY OF THE CONTRACTOR TO
PIPE SIZES, GAGES AND CORRUGATIONS SHALL BE AS SHOWN ON
FOLLOW OSHA GUIDELINES FOR SAFE PRACTICES.
TYPICAL SECTION VIEW
NOT TO SCALE
NOTE: IF SALTING AGENTS FOR SNOW AND ICE REMOVAL ARE USED ON OR NEAR THE
PROJECT, A GEOMEMBRANE BARRIER IS RECOMMENDED WITH THE SYSTEM. THE
GEOMEMBRANE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM THE
POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM A CHANGE IN THE
SURROUNDING ENVIRONMENT OVER A PERIOD OF TIME. PLEASE REFER TO THE
CORRUGATED METAL PIPE DETENTION DESIGN GUIDE FOR ADDITIONAL INFORMATION.
.TRENCH CONDITION EMBANKMENT CONDITION-
INITIAL FILL ENVELOPE_U 1t�i
DIAMETER
MIN.
COVER
CORR.
PROFILE
6"-10"
12"
1 1/2" x 1/4"
12"-48"
12"
2 2/3" x 1 /2"
54"-96"
12"
3" x 1", 5" x 1"
102"-144"
D/8
3" x 1", 5" x'I'l
BACKFILL REQUIREMENTS FOLLOW THE GUIDELINES OF AASHTO LRFD BRIDGE DESIGN (SEC 12) AND CONSTRUCTION (SEC 26)
1 MINIMUM TRENCH WIDTH MUST ALLOW ROOM FOR PROPER COMPACTION OF HAUNCH MATERIALS UNDER THE PIPE.
THE MINIMUM TRENCH WIDTH (12.6.6.1):
PIPE512":D+16"
PIPE > 12": 1.5D + 12"
1a MINIMUM EMBANKMENT WIDTH (IN FEET) FOR INITIAL FILL ENVELOPE (12.6.6.2):
PIPE < 24": 3.013
PIPE 24"- 144": D + 4'0"
PIPE > 144": D + 10'0"
2 THE FOUNDATION UNDER THE PIPE AND SIDE BACKFILL SHALL BE ADEQUATE TO SUPPORT THE LOADS ACTING UPON IT (26.5.2).
3 BEDDING MATERIAL SHALL BE A RELATIVELY LOOSE MATERIAL THAT IS ROUGHLY SHAPED TO FIT THE BOTTOM OF THE PIPE, AND A
MINIMUM OF TWICE THE CORRUGATION DEPTH IN THICKNESS, WITH THE MAXIMUM PARTICLE SIZE OF ONE-HALF OF THE CORRUGATION
DEPTH (26.3.8.1, 26.5.3).
4 CORRUGATED STEEL PIPE (CSP / HEL-COR).
5 HAUNCH ZONE MATERIAL SHALL BE HAND SHOVELED OR SHOVEL SLICED INTO PLACE TO ALLOW FOR PROPER COMPACTION (26.5.4).
5a INITIAL BACKFILL FOR PIPE EMBEDMENT TO MEET AASHTO A-1, A-2 OR A-3 CLASSIFICATION, OR APPROVED EQUAL, COMPACTED TO 90%
STANDARD PROCTOR (T 99). MAXIMUM PARTICLE SIZE NOT TO EXCEED 3" (12.4.1.2). ALL LIFTS PLACED IN A CONTROLLED MANNER. IT IS
RECOMMENDED THAT LIFTS NOT EXCEED AN 8" UNCOMPACTED LIFT HEIGHT TO PREVENT UNEVEN LOADING, AND THE LESSER OF 1/3
THE DIAMETER OR 24" AS THE MAXIMUM DIFFERENTIAL SIDE -TO -SIDE (26.5.4).
6 INITIAL BACKFILL ABOVE PIPE MAY INCLUDE ROAD BASE MATERIAL (AND RIGID PAVEMENT IF APPLICABLE). SEE TABLE ABOVE.
6a TOTAL HEIGHT OF COMPACTED COVER FOR CONVENTIONAL HIGHWAY LOADS IS MEASURED FROM TOP OF PIPE TO BOTTOM OF
FLEXIBLE PAVEMENT OR TOP OF RIGID PAVEMENT (12.6.6.3).
7 FINAL BACKFILL MATERIAL SELECTION AND COMPACTION REQUIREMENTS SHALL FOLLOW THE PROJECT PLANS AND SPECIFICATIONS
PER THE ENGINEER OF RECORD (26.5.4.1).
NOTES:
• GEOTEXTILE FABRIC SHALL BE INSTALLED TO PREVENT SOIL MIGRATION INTO VARYING SOIL TYPES (PROJECT ENGINEER).
• FOR MULTIPLE BARREL INSTALLATIONS THE RECOMMENDED STANDARD SPACING BETWEEN PARALLEL PIPE RUNS SHALL BE PIPE DIA./2
BUT NO LESS THAN 12", OR 36" FOR PIPE DIAMETERS 72" AND LARGER.
• CONTACT YOUR CONTECH REPRESENTATIVE FOR NONSTANDARD SPACING (TABLE C12.6.7-1).
TYPICAL BACKFILL DETAIL
NOT TO SCALE
THE PROJECT PLANS.
ALL FABRICATION OF THE PRODUCT SHALL OCCUR WITHIN THE
UNITED STATES.
MATERIAL SPECIFICATION
NOT TO SCALE
INTERRUPTED BAR
REPLACEMENT, SEE
NOTE 6.
(#6) REBAR CAN BE CUT FLUSH - o ALL STEEL PER
ASTM A36
TO OUTSIDE OF RAIL
(BAR LENGTH = 16Y4") OR BAR CAN R
EXTEND BEYOND RAILY"t - FABRICATION TOLERANCE: ±Y4"
o FLAT BAR AND REBAR: MILL
TOLERANCE APPLIES
TYP. 3/8"
12 TYP.
%" HOLE w/ %" REBAR RUNG,
CENTER TO CENTER
WELD REBAR TO RUNG ON
RUNG SPACING tD
0
�_j
OUTSIDE OF STEEL RAIL
2Y" x %" FLAT BAR SIDE RAIL
PLAN SIDE
NOTES:
1. LADDERS CAN BE MADE IN 20'-0" STANDARD LENGTHS AND CUT TO FIT
2. ALL MATERIAL TO MEET ASTM A36
3. LADDER TO BE HOT DIPPED GALVANIZED PER ASTM A-123 AFTER
FABRICATION IS COMPLETE
STANDARD LADDER DETAIL
NOT TO SCALE
PART NO. HALAGVLI6
PROVIDE MINIMUM OF 4 ATTACHMENT
ANGLES (2 ON EITHER SIDE OF LADDER RAIL)
TO CONNECT LADDER TO RISER EXTENSION
RISER w/ LADDER AND STEPS
IF EXTENSION IS REQUIRED
RISER w/ LADDER
AND STEPS
MAINLINE CMP
23/3xY,5x1,3x1,ETC.
NOTE:
THIS DRAWING IS INTENDED TO APPLY TO LADDERS
INSTALLED IN RISERS HAVING A DIAMETER OF 30" OR
LARGER. DUE TO SPACE CONSTRAINTS AND LIMITED
ACCESSIBILITY, THE PRACTICALITY AND SUITABILITY OF
UTILIZING RISERS SMALLER THAN 30" DIAMETER
AND/OR INCORPORATING LADDERS IN THESE SMALLER
DIAMETER RISERS SHOULD BE ADDRESSED BY THE
OWNER AND PROJECT ENGINEER
u-----CAI ----- 11
ill OJ�� I•\ ) J Q,�� pr\ )I
I I G Q I) i LI �\�i I I G Q\ I I �\ i I
>: i �� III �" �� III ��
\4 I
K I OPENING IN
_1J-I __ PROTECTION I --- _I L_ r _1 1 I
-11-� ------r%--_I-� --- SLAB FOR --- '-R��-- ---
I I I,,� I ACESS I I I
,i�\
---I c I-----i 1-Z__1 - ---- l I-----J
I I F}I
I I 1 I I I
II i II 1
STANDARD STANDARD
REINFORCING, REINFORCING, OB
SEE TABLE SEE TABLE
c
INTERRUPTED BAR
REPLACEMENT,
SEE NOTE 6.
ROUND OPTION PLAN VIEW
SQUARE OPTION PLAN VIEW
NOTES:
7. TRIM OPENING WITH DIAGONAL #4 BARS, EXTEND BARS A
MINIMUM OF 12" BEYOND OPENING, BEND BARS AS REQUIRED
1.
DESIGN IN ACCORDANCE WITH AASHTO, 17th
TO MAINTAIN BAR COVER.
EDITION AND ACI 350.
8. PROTECTION SLAB AND ALL MATERIALS TO BE PROVIDED AND
2.
DESIGN LOAD HS25.
INSTALLED BY CONTRACTOR.
3.
EARTH COVER = V MAX.
9. DETAIL DESIGN BY DELTA ENGINEERS, ARCHITECTS AND LAND
SURVEYORS, ENDWELL, NY.
4.
CONCRETE STRENGTH = 4,000 psi
5.
REINFORCING STEEL = ASTM A615, GRADE 60.
6.
PROVIDE ADDITIONAL REINFORCING AROUND
OPENINGS EQUAL TO THE BARS INTERRUPTED,
MANHOLE CAP DETAIL
HALF EACH SIDE. ADDITIONAL BARS TO BE IN THE
SAME PLANE.
NOT TO SCALE
'NOTE: WHEN RISER EXTENSIONS
ARE USED, THE PLANT SHOULD
CUT 3" FROM THE SIDE RAILS AS
SHOWN
'3" FROM BOTTOM OFLADDER
RAIL TO RISER JOINT
"3" FROM TOP OF LADDER'
RAIL TO RISER JOINT
LADDER RAILS AND RUNGS
(2)Y4" FILLET WELDS 1" LONG
ATTACHMENT AN(
L5"x3"x%4"x16"LONG ATT-0"
MINIMUM OF4ANGLES F
SPACING. LONG LEG TO
LADDER SECTION, (2 EACH SIDE
PROJECT OUT. WELD TOP
LADDER) 6' MAX. SPACI
1'-6" - AND BOTTOM OF 3" LEG TO EACH
VERTICAI
MAX. CORRUGATION CREST
7a(THESE ANGLES SHOULD BE USED
FOR LARGER DIAMETER
_
IL MAINLINES WHERE ADDITIONAL
STEPS ARE NEEDED)
I•*006 2
RISER LADDER DETAIL
NOT TO SCALE
6" FROM RUNG TO
RISER JOINT
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21
Brookhill Stormwater Quality Summary Table
Phosphorus Removal
Amount of Offsite Amount of Offsite
Percent of Total
Section
Block
Common Name
SWM Facility ID
Type of Facility
achieved w/proposed plan
Plan #
Credits Created Credits Purchased
Development
Section
Block
Common Name
(lb/yr)
(Ib/yr) (lb/yr)
Offsite Credits (%)
4
14
Apartments
Pond 11
Wet Pond
4.01
WP0201800051
5 16 TBD
1
4D
Apartments
DP-4A
Detention Pond w/ Underground Storage
-
WP0201800051
5 17 TBD
1
4D
Apartments
CDS-4A
CDS Unit (Manufactured Device)
1.60
WP0201800051
5 18 TBD
1
4D
Apartments
LS-11
Sheet flow to open space REMOVED
-
WP0201800051
0
1.27
3.7%
1
4B
Apartments
Pond 11
Wet Pond
0.18
WP0201800051
Section 5 Master Plan Comparison
1
4B
Apartments
UD-4B
Isolator Row (Manufactured Device)
3.38
WP0201800051
1
413
Apartments
Pond 413
Extended Detention Pond
0.79
WP0201800051
Section SWM Facility ID
1
4B
Apartments
LS-4B
Sheet flow to open space
0.74
WP0201800051
1
-
ROW
Pond 11
Wet Pond
0.18
WP0201800013
1
3
ROW
LS-11
Sheet flow to open space REMOVED
-
WP0201800013
0
1.09
3.2%
5 Pond 14A Treatment Total
1
3
ROW
LS-11
Sheet flow to open space REMOVED
-
WP0201800013
5 Pond 14B Treatment Total
1
2B
ROW and Block 8B
Pond 10
Wet Pond
5.91
WP0201800080
5 Pond 15A Treatment Tota I
1
ROW
LS-10
LS-10REMOVED
-
WP0201800080
0.68
1.53
2.5%
5 Pond 15BTreatment TOtaI
1
-
ROW
LS-10
LS-10 REMOVED
-
WP0201900080
5 Pond 16 Treatment Total
WP0201700037
5 Grass Channel Treatment Total
1
3
Section 1 Mass Grading
Pond 4
Wet Pond
20.56
(Amendment #2)
5 Sheet Flow to Open Space Treatment Total
0.46
0
1.4%
WP0201700037
Section 5 Treatment Total
1
3
Section 1 Mass Grading
LS-4.1
Sheet flow to open space
5.14
(Amendment #2)
WP0201700037
1
3
Section 1 Mass Grading
Wet Pond B
Wet Pond
8.53
0
0
0.0%
(Amendment #2)
Overall Treatment Total
1
1 3
Ice Rink ROW
Pond 11
Wet Pond
0.38
WP0201800050
0.08
0
0.2%
1
1 3
Ice Rink ROW
LS-11
Sheet flow to open space REMOVED
WP0201800050
1
1 3
Ice Rink ROW
Pond 4
Wet Pond
0.89
WP0201800050
0.68
0
2.0%
1
3
Ice Rink ROW
LS-4.1
Sheet flow to open space
0.67
WP0201800050
1
3
Ice Rink
Pond 4
Wet Pond
2.20
WP0201800050
1
3
Ice Rink
LS-4.1
Sheet flow to open space
1.79
WP0201800050
1
&D
Senior Living Facility
Pond 11
Wet Pond
3.70
WP0201900004
0.01
0
0.0%
1
&D
Senior Living Facility
LS-11
Sheet flow to open space REMOVED
-
WP0201900004
Section 1 Master Plan Comparison
Section
SWM Facility ID
Phosphorus
Removal proposedachieved
w/master plan
(lb/yr)
Phosphorus Removal
w/proposed plan
(Ili/yr)
Anticipated Amount of
Offsite Credits
Purchased (Ili/yr)
Anticipated Percent of
Total Development Offsite
Credits (%)
Amount of Offsite
Credits Purchased
(Ili/yr)
Percent of Total
Development
Offsite Credits (%)
4
Pond 4 Treatment Total
6.77
23.65
1
Pond 7 Treatment Total
8.11
TBD
1
Pond 10 Treatment Total
6.94
5.91
1
Pond 11 Treatment Total
9.68
8.45
1
Pond 4B Treatment Total
-
0.79
1
Manufactured Devices Treatment Total
2.62
4.98
1
Infiltration Treatment Total
21.71
0
1
Wet Pond B
-
8.53
1
Sheet Flow to Open Space Treatment Total
9.74
8.34
Section 1 BMP Treatment Total
65.57
60.65
Section l0ffsiteNutrient Credits Total
6.8
20.0%
1 3.89
11%
Section
Block
Common Name
SWM Facility ID
Type of Facility
Phosphorus Removal
achieved w/proposed plan
(lb/yr)
Plan #
Amount of Offsite
Credits Purchased
(lb/yr)
Percent of Total
Development
Offsite Credits (%)
2
9
Townhouses
Elk 9 Wet Pond
Level II Wet Pond
5.87
WP0201800086
2.10
g
6.2/d
2
1
Townhouses
Elk 10- UGD
Underground Detention (No Water Quality)
-
WP0201800086
2
11
Townhouses
_
FYI: A 2.08 Ibs/yr credit is appied to the Elks 9-11 WPO
20200004 plan from the immediately adjacent Wet Pond
B in WP0201700037 Amendment #2. This credit is
accounted for above in Section 1's Wet Pond B's 8.53
Ibs/yr removal rate and is therefore not shown in Section
2's removal rate summary.
WP0201800086
Section 2 Master Plan Comparison
Section
SWM Facility ID
Phosphorus
Removal proposedachieved
w/master plan
(lb/yr)
Phosphorus Removal
w/proposed plan
(Ili/yr)
Anticipated Amount of
Offsite Credits
Purchased (Ili/yr)
Anticipated Percent of
Total Development Offsite
Credits (%)
Amount of Offsite
Credits Purchased
(Ill
Percent of Total
Development
Offsite Credits (%)
2
Pond 12 Treatment Total
8.06
2
Sheet Flow to Open Space Treatment Total
1.67
-
2
Blk 9 Wet Pond
-
5.87
2
Elk 10- UGD
-
2
Credit Appied from WP0201700037 Amendment #2
-
-
Section 2 Treatment Total
9.73
5.87
Section 2 Nutrient Credits Totall
6.8
1 20.0%
1 2.10
6.2%
Section
Block
Common Name
SWM Facility ID
Type of Facility
Phosphorus Removal
achieved w/proposed plan
(lb/yr)
Plan #
Amount of Offsite
Credits Purchased
(lb/yr)
Percent of Total
Development
Offsite Credits (%)
3
14
TBD
TBD
TBD
TBD
TBD
TBD
TBD
4
14
TBD
TBD
TBD
TBD
TBD
TBD
TBD
3
12
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Section 1 Master Plan Comparison
Section
SWM Facility ID
Phosphorus
Removal proposedachieved
w/master plan
(lb/yr)
Phosphorus Removal
w/proposed plan
(Ili/yr)
Anticipated Amount of
Offsite Credits
Purchased (Ili/yr)
Anticipated Percent of
Total Development Offsite
Credits (%)
Amount of Offsite
Credits Purchased
(Ili/yr)
Percent of Total
Development
Offsite Credits (%)
3
Pond 13A Treatment Total
9.13
TBD
3
Sheet Flow to Open Space Treatment Total
5.95
TBD
Section 3 Treatment Totall
15.08
1 TBD
Section 3 Nutrient Credits Totall
6.8
1 20.0%
1 TBD
I
I
I TBD
Section
Block
Common Name
SWM Facility ID
Type of Facility
Phosphorus Removal
achieved w/proposed plan
(lb/yr)
Plan #
Amount of Offsite
Credits Purchased
(lb/yr)
Percent of Total
Development
Offsite Credits (%)
4
14
TBD
TED
TBD
TBD
TBD
TBD
TBD
4
14
TBD
TBD
TBD
TBD
TBD
TBD
TBD
4
14
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Section 1 Master Plan Comparison
Section
SWM Facility ID
Phosphorus
Removal proposedachieved
w/master plan
(lb/yr)
Phosphorus Removal
w/proposed plan
(IllPurchased
Anticipated Amount of
Offsite Credits
(Ili/yr)
Anticipated Percent of
Total Development Offsite
Credits (%)
Amount of Offsite
Credits Purchased
(Ili/yr)
Percent of Total
Development
Offsite Credits (%)
4
Pond 13A Treatment Total
14.05
TBD
4
Sheet Flow to Open Space Treatment Total
0.04
TBD
Section 4 Treatment Total
14.09
1 TBD
Section 4 Nutrient Credits Totall
6.8
20.0%
TBD
TBD
Notes
SWM Facility ID
Type of Facility
Phosphorus Removal
achieved w/proposed plan
(lb/yr)
Plan #
Amount of Offsite
Credits Purchased
(lb/yr)
Percent of Total
Development
Offsite Credits (%
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Phosphorus
Removal proposed
w/master plan
(Ib/yr)
Phosphorus Removal
achieved w/proposed plan
(Ili /yr)
Anticipated Amount of
Offsite Credits
Ili
Purchased ( /Yr)
Anticipated Percent of
Total Development Offsite
Credits (g)
Amount of Offsite
Credits Purchased
(lb/yr)
4.81
TBD
6.42
TBD
5.16
TBD
5.14
TBD
11.75
TBD
2.1
TBD
1.43
TBD
36.81
TBD
Section 5 Nutrient Credits Total
6.8
20.0%
TBD
141.28
66.52
Overall Nutrient Credits Purchased
34
100.0%
5.99
Treatment Total With SWM Master Plant 175.56
1. Even though we are currently only proposing to purchase 34 Ib/yr or 19.37%, the total offsite credits available for purchase are 25% of the total 175.56 Ib/yr required for the development, or 43.89 Ib/yr
2. Actual credits purchased to date are 2.36 lb/yr.
3. Credit amount approved to be purcased with Block 8E, but not yet purchased, is 1.53 Ibs/yr. of phosphorous (WPO 201800080).
4. Credit amount to be purchased (with this plan) for Blocks 9-11, but not yet purchased, is 2.10 Ibs/yr of phosphorous (WPO 20200004).
5. A nutrient credit amount of 2.08 Ibs/yr of phosphorous is to be applied to this project from Amendment #2 to WPO 201700037.
AIR FLO 3 DIFFUSED AERATION SYSTEM
SPECIFICATIONS
,( �IJg
41 r`
PURPOSE The diffused air. aeration manufacturer shall �r
provide an underwater aeration system designed to aerate,
de stratify, and circulate water without disturbing the �aL L-: si 4- .. • `
natural surroundings of the lake environment. rill
SCOPE: The diffused air, aeration package shall be
capable of being installed in lakes deeper than aft 11 m).
PACKAGE This aeration package shall include the N'
following equipment
a. Air compressor cabinet enclosure. To Include ?r --
compressor(s), circuit disconnect, and air flow
balancing valve manifolds.
To be designed to operate on either:_ _
AW-r M
I. 60Hz power, l I51208/230 volt, single phaseit. SOHz power, 220/240 volt, single phase www,olterbine,6o ntairll97 D;fABth1S
IS. Air/Oxygen disc diffuser manifolds
c. Tubing
CABINET/ENCLOSURE TUBING: fAwWbte in JOOf[(30m) innrmenisf
0 1 Compressor Total required tubing for system:
Q• 2 Compressor feet (_ m) Nonweighted polyvinyl chloride tubing
SPECIFY: its Volts 60 Hz feet (_ m) Weighted polyethylene chloride tubing
DIFFUSER MANIFOLD(S): fSi»gle or Nal Disc/ Tubing lengths per diffuser manifold:
Quantity Type
Single Disc Manifold(s) ^ _ Q feet to meters) Nonweightedtubing
! Dual Disc Manifold(s)
Q feet IQ meters) Weighted tubing
PISTON AIR COMPRESSOR: (for lakes 3h 0 m) deep or larger) The air comptessonsl shall be a 1 /2HP rocking
piston, dual frequency, permanent split capacitor (psc) electric motor with oilless lubrication, direct drive (no
belts or puIItys), desgned for field service capability. polyurethane rust protection, and to Include the followin
g
filter. T serviceable arts: piston cups. retainer
motor protection thermal overload protection, and intake air 1 to he s a p p P .
screws, cylinder o-rings, head o rings, valve and waive retainers: should last two years in continuous operation.
These maintenance parts shall be replaceable with common tools. Please consult your local distributor if you
require assistant in choosing sites, accessories, or applications.
AIR COMPRESSOR CABINET ENCLOSURE:
a. Cabinet body and cover construction shall be 18 gauge (0.048in/0.122cm) 304 stainless steel, and
include EPDM edgegnp seal
b. Cabinet cooling system to consist of two (2) axial exhaust fans and vented intake louvers on the bottom
of the cabinet to provide an air exchange rate of 410-490 CFM
e Compressor -intake au to be quick change cartridge type filters
(I. Cabinet enclosure secured by stainless steel latch to accomodate locking mechanism
Y, 11. 1 Dnreeed Ar Svslem specAca"s I Page 1 W 2
AF3-242; P/N 03-3242 OR APPROVED EQUAL
a
a
a
3
FAIR FLO 3
DIFFUSED AERATION
No electrical parts In grater, safe for recreational use.
Fktrerrlelyenerin, efficient andcost effediwe.
I -,!in 13 sDmm) discs arc coated to pro%ide non-stick
.urface and offer higher efYid�cies throughout
fifecyda
operating depths up to 40ft+ or 12:AD+.
• 2 year all-Lmlusiv-e warranty.
• Complete package includes cabinet gdth coinpressor(s).
Idler and vah a manifolds; and Wfuscr mantfuldlsh.
• solely tested and listed wth Ell. S ETL- C, conlvm3ing
to OL standards; and carries a 3rd parts' listing with CE.
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PRODUCT ILLUSTRATIONS
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APPROVED EQUAL
AIR/OXYGEN DIFFUSER MANIFOLDS The air/oxygen disc diffusers shall include, but not be Ilmted to, the
following materials of construction.
a. Disc type 12in (350mm) membrane diffusers allow for maximum 12CFM and are resistant to Ozone and W
It. Membrane material to be premium quality compression molded EPOM with an oil content of less than 12%
c. Diffuser membranes should have a minimum of 10,155 slit perforations and be at least 70%hydrophdlc,
with tensile strength at 2000 psi
d. Diffuser to consist of membrane with integral gasket, base, retaining ring, and air Row control orifice
e. Membrane shalt collapse and seal when aeration system air Is turned off
f. Sealing method of retaining device shall generate a minimum of SO pounds per inch/58 Kg/cm of
circumference of the sealing gasket to provide a long term positive seal and to prevent air escape
g. Diffuser base and retaining ring to be constructed of polypropylene with organic UV stabilizers and a tensile
strength of 5000 psi
h. Diffuser to have one 3/4in (2.5cm) connection method to manifold
i. Each diffuser shall include a manifold that will connect up to two (2) alr-discs to the air supply tubing
j. Manifold base shall be constructed of high -density polyethylene plastic and incorporate ballast channels for
level sinking of pars during installation
WEIGHTED POLYVINYL CHLORIDE TUBING: Tubing shall be constructed of heavy, negative buoyancy, polyvinyl
chloride (PVC) materal. The PVC tubing shall be 1 /2' (1 cm) with a minimum wall thickness of 1/4' (.64 cm).
Pressure rating shall be 225 list at 700 F (21 o 4. Coil lengths shall be 100' (30 m), with a weight per 100' (30 m)
f 4 I list. T 1 shall be self -sinking, lead free and contain carbon black for UV tection. Please consult
0 3 bs (20Tubing g, pro
your local distributor for additional Information.
NON -WEIGHTED POLYETHYLENE TUBING: The polyethylene tubing shall be 1/2in (I trill with a minimum wall
thickness of .06in (1-Smm). Pressure rating shall be 100 psi at 73 F(220. Coil lengths shall be 100' (30 m), wick
a weight per I OOft (30m) of 11 Ill (5 kg). Tubing shall contain 2%carbon black for long term W protection. Please
consult your local distributor for additional information.
INSERT FITTINGS Insert fittings are used to repair, adapt, or connect wrth the polyethylene tubing. Fittings
available shall Include line size couplings, male adapters, and elbows.
TESTING: A. Safety - The aerator system shall be tested and approved as a unit. Separate component testing not
allowed. Unit must be tested by ETL, ETL.C, CE- UL or other accredited testing facilities. B. Performance - Unit must
have independent performance testing provided by GSEE.
MANUFACTURER: The diffused air,
aeration system shall be Air Flo 3
Systems ____ as manufactured
by Otterbine Barebo, Inc.,3840
MAIN ROAD EAST, Emmaus, PA
18D49, USA PH. (610) 96S•6018,
or approved equal. For approved
equal status, supplier shall provide
the following Information to the
project designer, within 10 days of
the bid opening date, for written
approval.
WARRANTY: The aeration system
shall include a two year warranty on
the air compressor, air diffuser and
♦♦ ♦
SYSTEM A of Diffuser
Coin ressor(o Pads)
♦ .
A Discs
per Pad
I Disc Volt/Amp/Hz
♦lain
AF3.121
2
3
1 �
1
2
2
3 1/60
a I 23012.20R.Sy60
2 220/2.a/S0
4
AF3.131
AFY711
AF3-112
2
03.122
AF3 241
4
8
a
2 3
3
4
6
1
4
6
6 11S!!.9/60
4 270/4.2160
6 220/5.6/s0
a
12
AF3461
AF3.201
AF3.222
2
A13-232
A113442
AF3462
underwater tubing.
AF3-242; PIN 03-3242 OR APPROVED EQUAL
NI M 3 DAused M System Speclfkavhx,s I Page 2 of 2
Percent of Total
Development
Offsite Credits (%)
TBD
17.6%
f
SCUTT R. LLINS�
Lic. No. 035791,a
8/04/20 w4
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SCALE
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SHEET NO.
22