HomeMy WebLinkAboutSDP202100038 Plan - Revision 2021-07-12RIVANNA WATER &SEWER AUTHORITY
CHARLOTTESVILLE, VIRGINIA
WATER & SEWER AUTHORITY
MOORES CREEK ADVANCED WATER RESOURCE RECOVERY FACILITY
IN -PLANT CLARIFIERS AND LIME SILO DEMOLITION
CIVIL
C01 - GENERAL NOTES AND LEGEND
CO2 - EROSION AND SEDIMENT CONTROL NOTES
CO3 - LOCATION INFORMATION
C10 - OVERALL SITE PLAN
C11 - EXISTING SITE AND YARD PIPING PLAN
C12 - EROSION AND SEDIMENT CONTROL PLAN
C13 - DEMOLITION PLAN
C14 - FINAL SITE PLAN
C15 - FINAL YARD PIPING PLAN
C16
- STORMWATER
CALCULATIONS
- VRRM
C17
- STORMWATER
CALCULATIONS
-
PEAK
FLOWS
CD1 - EROSION AND SEDIMENT CONTROL DETAILS
CD2 - STANDARD DETAILS
TOTAL SHEETS: 14
ISSUED FOR CONSTRUCTION
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LOCATION MAP
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Hazen
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 500
RALEIGH, NORTH CAROLINA 27607
LICENSE NO.: C-0381
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Monticello
MOORES CREEK ADVANCED
WATER RESOURCE
RECOVERY FACILITY
ALBEMARLE COUNTY CDD
PROJECT #: SDP202100038
WP0202100027
DATE
REVISION SET
7/12/2021
REVISION PER COUNTY COMMENTS
APPROVALS
DATE
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNING
ENGINEER
INSPECTIONS
ARB
DEPARTMENT OF FIRE RESCUE
ALBEMARLE COUNTY SERVICE AUTHORITY
VIRGINIA DEPARTMENT OF TRANSPORTATION
GENERAL NOTES:
SITE INFORMATION
SITE SEEDING SCHEDULE AND NOTES
1. SITE INFORMATION HAS BEEN TAKEN FROM HAZEN AND SAWYER RECORD DRAWINGS
FROM PROJECT #31037-039 TITLED "MOORES CREEK WASTEWATER TREATMENT PLANT
NUTRIENT REMOVAL IMPROVEMENTS", DATED SEPTEMBER, 2014.
2. HORIZONTAL CONTROL IS REFERENCED TO NAD 83, VIRGINIA SOUTH ZONE, AND
VERTICAL CONTROL IS REFERENCED TO NAVD 88.
3. FLOOD PLAIN ELEVATIONS FROM FEDERAL EMERGENCY MANAGEMENT AGENCY (FEMA)
FLOOD INSURANCE RATE MAP FIRM PANEL 0289D
MAP NUMBER 51003CO289D DATED FEBRUARY 04, 2005
THE PROJECT IS LOCATED IN ZONE X, AREA OF MINIMAL FLOOD HAZARD.
4. CONTRACTOR SHALL VERIFY FIELD CONDITIONS BEFORE COMMENCEMENT OF ANY
CONSTRUCTION ACTIVITIES. CONTRACTOR SHALL VERIFY EXISTING ELEVATIONS AND
DIMENSIONS WHERE NEW WORK WILL MATCH EXISTING. DISCREPANCIES SHALL BE
BROUGHT TO THE ATTENTION OF THE ENGINEER FOR RESOLUTION PRIOR TO THE
COMMENCEMENT OF WORK.
5. CONTRACTOR SHALL OBTAIN ALL THE NECESSARY CONSTRUCTION PERMITS FROM THE
APPROPRIATE AUTHORITIES, DEPARTMENTS, AND/OR AGENCIES HAVING JURISDICTION
PRIOR TO COMMENCING WORK. OWNER AND ENGINEER HAVE OBTAINED DESIGN
PERMITS TO COMPLETE WORK INCLUDING A MINOR SITE PLAN AMENDMENT AND A
WATER PROTECTION ORDIANCE (WPONSMP) FROM ALBEMARLE COUNTY.
6. CONTRACTOR SHALL TAKE CARE TO AVOID DAMAGE TO EXISTING PAVEMENT, TREES,
VEGETATION, STRUCTURES, AND UTILITIES THAT ARE NOT INDICATED TO BE
DEMOLISHED OR REMOVED. ANY DAMAGE TO EXISTING PAVEMENT, TREES,
VEGETATION, STRUCTURES, AND UTILITIES NOT INDICATED TO BE DEMOLISHED OR
REMOVED SHALL BE REPAIRED AT THE CONTRACTOR'S EXPENSE.
7. UTILITIES HAVE BEEN PLOTTED FROM AVAILABLE RECORD INFORMATION. IT IS THE
CONTRACTOR'S RESPONSIBILITY TO VERIFY THEIR EXACT LOCATION AND TO AVOID
DAMAGE TO THEM. THE CONTRACTOR SHALL CONTACT VIRGINIA 811 AT PHONE
NUMBER 811 OR 1-800-552-7001 TO REQUEST UNDERGROUND UTILITY LOCATION
MARK -OUT AT LEAST THREE (3) WORKING DAYS BUT NO MORE THAN TEN (10) WORKING
DAYS PRIOR TO BEGINNING EXCAVATION, INCLUDING SOIL DRILLING. THE CONTRACTOR
SHALL ALSO CONTACT AND REQUEST UTILITY LOCATION MARK -OUT FROM BURIED
UTILITY OWNERS WITH UTILITIES ON THE PROJECT SITE THAT ARE NOT PARTICIPANTS
OF VIRGINIA 811.
8. WHERE PROPOSED WORK IS IN THE VICINITY OF UTILITY POLES, SUCH THAT SUPPORT
OF THE POLE(S) WILL BE REQUIRED, THE CONTRACTOR SHALL BE RESPONSIBLE FOR
NOTIFYING THE UTILITY OF THE WORK. IT WILL BE THE RESPONSIBILITY OF THE
CONTRACTOR TO COORDINATE WITH THE UTILITY FOR SUPPORT OF THE POLE. ALL
PAYMENTS ASSOCIATED SHALL BE INCLUDED IN CONTRACTORS LUMP SUM BID.
9. WHERE OVERHEAD POWER LINES ARE PRESENT, CONTRACTOR MUST CONTACT THE
UTILITY PRIOR TO CONSTRUCTION ACTIVITIES TO DETERMINE THE MINIMUM REQUIRED
EQUIPMENT CLEARANCE (MEC) DISTANCE BASED UPON LINE STRENGTH.
10. DURING EXCAVATION AND PLACEMENT OF UTILITIES THE CONTRACTOR SHALL COMPLY
WITH ALL APPLICABLE SAFETY REGULATIONS AND SHALL SUBMIT TO THE ENGINEER
FOR REVIEW SHEET PILING, SHORING AND/OR BRACING DESIGNS AS MAY BE
NECESSARY TO COMPLY WITH THESE REGULATIONS.
11. CONTRACTOR SHALL BE SOLELY RESPONSIBLE FOR DESIGN AND INSTALLATION OF ALL
EXCAVATION SUPPORT AT LOCATIONS AS MAY BE SUGGESTED ON CONTRACT
DRAWINGS OR FOR THEIR OWN CONVENIENCE. CONTRACTOR SHALL SUBMIT ALL
NECESSARY CALCULATIONS, DRAWINGS, ETC. PREPARED BY A PROFESSIONAL
ENGINEER REGISTERED IN THE COMMONWEALTH OF VIRGINIA AS NECESSARY FOR
REVIEW BY THE ENGINEER PRIOR TO INSTALLATION. REQUIREMENTS FOR EXCAVATION
SUPPORT DESIGN MAY BE FOUND IN SPECIFICATION SECTION 31 00 01 EARTHWORK.
12. GROUNDWATER FROM ALL DEWATERING OPERATIONS SHALL BE DISCHARGED TO AN
ENVIRONMENTALLY ACCEPTABLE LOCATION IN ACCORDANCE WITH THE CONTRACT
DOCUMENTS, OR AS DIRECTED BY THE ENGINEER.
13. ALL TEMPORARY FACILITIES ARE SUBJECT TO THE SAME HEALTH AND SAFETY
REQUIREMENTS AS PERMANENT FACILITIES, AS SPECIFIED IN THE CONTRACT
DOCUMENTS AND HEALTH SAFETY PLAN (HASP).
14. THE CONTRACTOR SHALL REMOVE AND DISPOSE OF ALL DEBRIS GENERATED DURING
THE PROJECT OFF SITE AT A PROPERLY PERMITTED DISPOSAL FACILITY. IF REQUIRED
BY DISPOSAL FACILITY, CONTRACT OR SHALL OBTAIN CHAIN OF CUSTODY FORMS TO
BE SIGNED BY ALL PARTIES.
15. CONTRACTOR SHALL BE ADVISED THAT ALL WORK WILL TAKE PLACE ON AN ACTIVE
WASTEWATER TREATMENT PLANT, AND OPERATIONS SHALL BE MAINTAINED
THROUGHOUT WORK. ALL PRESSES SHALL BE MAINTAINED AND CONTRACTOR SHALL
COORDINATE ALL PROPOSES SHUTDOWNS OR UTILITY DISTURBANCES WITH OWNER A
MINIMUM OF 2 WEEKS PRIOR.
LEGEND
STRUCTURES/SURFACES
PROJECT DESCRIPTION:
THE RIVANNA WATER AND SEWER AUTHORITY IS PROPOSING DEMOLITION OF THE
TWO IN -PLANT CLAIFIERS AND LIME SILO AND OTHER RELATED STRUCTURES. ALL
YARD PIPING ASSOCIATED WITH THE CLARIFIERS WILL BE DEMOLISHED AND
CAPPED AND FILLED AS SHOWN ON THE DRAWINGS. THERE WILL BE REROUTING OF
EXISTING YARD PIPING WHERE APPROPRIATE. WHERE SHOWN, EXISTING SIDEWALK
WILL BE REPLACED, AND ASPHALT WILL BE MILLED AND OVERLAID WITH SURFACE
COURSE. THIS PROJECT WILL RESULT IN APPROXIMATELY 57500 SF OF LAND
DISTURBANCE.
EXISTING SITE CONDITIONS:
THE PROJECT IS AT THE MOORES CREEK ADVANCED WATER RESOURCE RECOVERY
FACILITY (MCAWRRF) LOCATED AT 695 MOORES CREEK LANE, CHARLOTTESVILLE VA
22902. THE PROPERTY IS LOCATED IN UNINCORPORATED ALBEMARLE COUNTY. THE
PROPOSED DISTURBANCE WILL BE LOCATED ADJACENT TO THE PRIMARY
DIGESTERS AND THE SOLIDS HANDLING BUILDING. TOPOGRAPHY IN THESE THREE
AREAS ARE GENTLY SLOPED ALONG THE EXISTING INFRASTRUCTURE, RANGING IN
ELEVATIONS FROM 325 FT TO 355 FT.
THE NEAREST BODY OF WATER IS MOORES CREEK, WHICH IS APPROXIMATELY 500
FT DOWNSTREAM FROM THE NEAREST GROUND DISTURBING ACTIVITY. NO LAND
DISTURBANCE WILL TAKE PLACE IN THE FEMA FLOODPLAIN OR 100' MOORES CREEK
STREAM BUFFER. MOORES CREEK ULTIMATELY DISCHARGES TO THE RIVANNA
RIVER. ACCORDING TO THE 2016 TMDL REPORT, MOORES CREEK STREAM SEGMENT
IS SEVERELY IMPACTED FOR ITS AQUATIC LIFE USE. SEDIMENT WAS SELECTED AS
THE MOST PROBABLE STRESSOR. THE PROJECT IS LOCATED IN ZONE X, AREA OF
MINIMAL FLOOD HAZARD.
THE COMBINED MCAWRRF PARCELS ARE BOUND TO THE SOUTH BY THE 1-64
CORRIDOR. TO THE WEST AND NORTH ARE MULTIPLE OPEN PARCELS, ZONED
RURAL AND LIGHT INDUSTRIAL.
OFF -SITE AREAS:
CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING SELECT BACKFILL FROM AN
OFFSITE LOCATION. ANY VPDES PERMIT REQUIRED IN SUPPORT OF OFFSITE
ACTIVITIES SHALL BE OBTAINED BY THE CONTRACTOR
SOILS:
SOIL TYPES FOUND AT THE MCAWRRF SITE WERE IDENTIFIED BASED ON
INFORMATION OBTAINED FROM THE UNITED STATES DEPARTMENT OF
AGRICULTURE (USDA), NATURAL RESOURCE CONSERVATION SERVICE (NRCS). THE
PROJECTS LIMITS OF DISTURBANCE IS COMPOSED SOLELY OF RABUN CLAY LOAM,
15 TO 25 PERCENT SLOPES. RABUN CLAY LOAM IS IN HYDROLOGIC SOIL GROUP
(HSG) A. ADJACENT SOIL TYPES ARE SHOWN ON THE LEGEND BELOW AND ON C12
FOR BOUNDARY CLARIFICATION ONLY.
SOIL UNIT LEGEND
MAP UNIT
SYMBOL
MAP UNIT NAME
HSG
SITE AREA
71D
RABUN CLAY LOAM,
B
100%
15 TO 25% SLOPES
71C
RABUM CLAY LOAM,
B
0%
7 TO 15% SLOPES
83
COLVARD FINE SANDY LOAM,
A
0%
0 TO 2% SLOPES,
OCCASIONALLY FLOODED
23B
YADKIN CLAY LOAM,
B
0%
2 TO 7% SLOPES
23C
YADKIN CLAY LOAM,
B
0%
7 TO 15% SLOPES
12E
CATOCTIN SILT LOAM, 15 TO
B
0%
25% SLOPES, VERY STONY
NEW/OTHER
EXISTING
STORMWATER RUNOFF CONSIDERATIONS:
QUALITY
THE VIRGINIA RUNOFF REDUCTION METHOD (VRRM) SPREADSHEET FOR
RE -DEVELOPMENT WAS USED TO DETERMINE THE NUTRIENT REDUCTION
REQUIREMENTS. BECAUSE OF THE REMOVAL OF IMPERVIOUS SURFACES, THE
PROPOSED PROJECT IS EXCEEDING THE PHOSPHORUS LOAD REDUCTION BY 0.04
LBS/YR.
QUANTITY
THE PRE -DEVELOPMENT PEAK FLOWS FOR THE 2-YR AND 10-YR 24-HR STORMS
FOR EACH DRAINAGE AREA (DA) ARE AS FOLLOWS:
2-YR, 24-HR
10-YR, 24-HR
DA1
0.1 CFS
0.4 CFS
DA2
1.0 CFS
2.1 CFS
DA3
0.9 CFS
1.9 CFS
DA4
0.2 CFS
0.5 CFS
THE POST -DEVELOPMENT PEAK FLOWS FOR THE 2-YR AND 10-YR 24-H5 STORMS
FOR EACH DRAINAGE AREA ARE AS FOLLOWS:
2-YR, 24-HR
10-YR, 24-HR
DA1
0.1 CFS
0.4 CFS
DA2
0.6 CFS
1.5 CFS
DA3
0.7 CFS
1.6 CFS
DA4
0.2 CFS
0.5 CFS
UNDER PRE -DEVELOPMENT CONDITIONS, RUNOFF FROM THE PROJECT AREA
SHEET FLOWS DOWNHILL AWAY FROM THE CLARIFIERS, DOWN A STEEP HILL AND
INTO THE NEAREST STORMWATER INLET. NO CHANGE IN OVERALL DRAINAGE
PATTERNS IS PROPOSED POST -DEVELOPMENT. EACH DRAINAGE AREA EITHER
EXPERIENCES NO CHANGE OR A DECREASE IN PEAK FLOW. AT THE POINT OF
OUTFALL THE DRAINAGE AREA OF MOORES CREEK IS APPROCIAMTELY 35.1
SQUARE MILES. THERE WILL BE NO CHANGE IN PRE AND POST RUNOFF
CONDITIONS AS A RESULT OF THIS PROJECT AS ALL EXISTING DRAINAGE
PATTERNS WILL REMAIN. DUE TO PROJECT DEMOTION, THERE WILL BE A
DECREASE IN PEAK FLOW FOR THE PROJECTS AFFECTED DRAINAGE AREAS AND
AS SUCH NO IMPACT ON MOORES CREEK AS IT RELATES TO EROSION OR
FLOODING.
ABBREVIATIONS
NEW DEMO EXISTING
300 CONTOUR
300�
CONTOUR
EDP
EDGE OF PAVEMENT
G
GAS
n n
x
FENCE
BUILDING/STRUCTURE
III�III YARD INLET
LOD
LIMITS OF DISTURBANCE
SS
SANITARY SEWER
--
PROPERTY LINE
CONCRETE CURB
OHE
OVERHEAD ELECTRIC
W
WATER
�r AND GUTTER
EASEMENT
EXCAVATION SUPPORT
�a
.............................
STORM DRAIN LINE
FOC
FIBER OPTIC CABLE
R
PROPERTY LINE
.. CONCRETE PAD/SIDEWALK
77777777
A e
SOIL TYPE BOUNDARY
QO
MANHOLE
LP
LIGHT POLE
rt
CENTER LINE
- - - - - - YARD PIPING
co
YARD INLET
UGE
UNDERGROUND
MILL AND OVERLAY
+ + + +
POWER POLE
ELECTRIC
PP
POWER POLE
PROJECT
ENGINEER:
DESIGNED BY:
DRAWN BY:
CHECKED BY:
1 CONSTRUCTION 06/2021 gyp M THIS BAR DOES NOT
MEASURE 1"THEN DRAWING
REV ISSUED FOR DATE BY IS NOT TO FULL SCALE
:m1•l:armt
A. MARCH
A. MARCH
B.EDWARDS
0 1/2" 1"
ISSUED FOR
CONSTRUCTION
Hazen
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 500
RALEIGH, NORTH CAROLINA 27607
LICENSE NO.: C-0381
APPLICATION RATES IN POUNDS/ACRE
SEED
PLANTING
STRAW
MIXTURE
SEASON
SEED
LIME*
FERTILIZER**
MULCH***
COMMENTS
PREFERED SEASONS:
P
FEB 15 - APR 30
200
4000
1000
4000
SEPT 1 - SEPT 30
SEPT 1 - OCT 31
FEB 15 - MARCH 30
OVERSEED WITH TYPE P
TW
SEPT 1 - FEB 15
100
*
600
4000
SEED MIXTURE DURING
NEXT PLANTING SEASON
OVERSEED WITH TYPE P
TSP
FEB 16 - APR 30
100
*
600
4000
SEED MIXTURE DURING
NEXT PLANTING SEASON
OVERSEED WITH TYPE P
TSU
MAY 1 - AUG 31
50
*
600
4000
SEED MIXTURE DURING
NEXT PLANTING SEASON
RIVANNA WATER & SEWER AUTHORITY
CHARLOTTESVILLE, VIRGINA
P - 190 LB/AC KENTUCKY 31 TALL FESCUE
5 LB/AC PERENNIAL RYEGRASS
5 LB/AC KENTUCKY BLUEGRASS
TW - 50 LB/AC ANNUAL RYEGRASS
50 LB/AC CEREAL (WINTER) RYE
TSP - 100 LB/AC ANNUAL RYEGRASS
TSU - 50 LB/AC GERMAN MILLET
SEED MIXTURES TO BE USED ON THE PROJECT FOR PERMANENT (P), TEMPORARY WINTER (TW), TEMPORARY SPRING (TSP)
AND TEMPORARY SUMMER (TSU) SHALL BE AS FOLLOWS (ACCEPTABLE SUBSTITUTES PER SECTION 6.24 OF THE NC
EROSION AND SEDIMENTATION CONTROL PLANNING AND DESIGN MANUAL MUST BE APPROVED BY ENGINEER)
SEEDBED PREPARATION NOTES:
1. SCARIFY 2" DEPTH OF SUBGRADE PRIOR TO PLACING TOPSOIL.
2. TOPSOIL SHALL BE SPREAD AT 4" INCH CONSOLIDATED DEPTH
3. APPLY SEED UNIFORMLY WITH A CYCLONE SEEDER, DROP -TYPE SPREADER, OF HYDROSEEDER ON A FIRM, FRIABLE
SEEDBED. IN FINE SOILS, SEEDS SHOULD BE DRILLED 1/4 -1/2 INCH. IN COARSE, SANDY SOILS, SEEDS SHALL BE
PLANTED NO DEEPER THAN 3/4 INCH. COVER BROADCAST SEED BY LIGHTLY RAKING OR CHAIN DRAGGING; THEN FIRM
SURFACE WITH A ROLLER OR CULTIPACKER TO PROVIDE GOOD SEED CONTACT.
4. ON CUT AND FILL SLOPES 2:1 OR STEEPER ADD 20 LBS/AC OF WEEPING LOVEGRASS TO THE P SEED MIXTURE IN THE
SPRING AND ADD 20 LBS/AC ANNUAL RYEGRASS IN FALL AND WINTER.
* LIME SHALL BE APPLIED AT A MINIMUM OF 2 TONS PER ACRE WITH 3 TONS PER ACRE IN CLAY SOILS. APPLICATION
RATES AND/OR CHEMICAL ANALYSIS SHALL BE CONFIRMED OR ESTABLISHED BY SOIL TEST. TACK MULCH BY
APPLYING AT 0.10 GAL/YD2. RATE REQUIREMENTS FOR TEMPORARY SEEDING SHALL BE BASED UPON A pH TEST AS
SUCH:
<4.2 3 TONS/ACRE
4.2-5.2 2 TONS/ACRE
5.2-6.0 1 TON/ACRE
** FERTILIZER SHALL BE 10-20-10 MIX OR EQUIVALENT NUTRIENTS.
*** ALTERNATIVE METHODS OF MULCHING MAYBE UTILIZED. ALTERNATIVE METHODS SHALL CONFORM TO REQUIREMENTS IN
THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
TEMPORARY SEEDING:
1. LIMING: AN EVALUATION SHOULD BE CONDUCTED TO DETERMINE IF LIME IS NECESSARY FOR TEMPORARY SEEDING. SEE ABOVE NOTES TO
DETERMINE THE NEED AND APPLICATION OF LIME FOR TEMPORARY SEEDING.
2. FERTILIZER: SHALL BE APPLIED AT 600 LBS/AC OF 10-20-10 OR EQUIVALENT NUTRIENTS. LIME AND FERTILIZER SHALL BE INCORPORATED INTO
THE TOP 2 TO 4 INCHES OF THE SOIL.
3. SEEDING: SEEDING SHALL BE APPLIED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER OR HYDROSEEDER. SMALL GRAINS SHALL
BE PLANTED NO MORE THAN ONE INCH DEEP. GRASSES AND LEGUMES SHALL BE PLANTED WITH NO LESS THAN 1/4" SOIL COVER. FOR SEED
SELECTION AND RATES SEE TABLE 3.31-B (THIS SHEET).
4. MULCHING: SEEDING MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS SHALL BE MULCHED ACCORDING TO
MULCHING STD. & SPEC 3.35 (TABLE 3.35-A PROVIDED THIS SHEET), EXCEPT THAT HYDROMULCHES (FIBER MULCH) WILL NOT BE CONSIDERED
ADEQUATE. STRAW MULCH SHOULD BE USED DURING THESE PERIODS. TEMPORARY SEEDING MADE UNDER FAVORABLE SOIL AND SITE
CONDITIONS DURING OPTIMUM SPRING AND FALL SEEDING DATES MAY NOT REQUIRE MULCH.
PERMANENT SEEDING:
1. LIMING & FERTILIZER: LIME AND FERTILIZER SHALL BE APPLIED PER SOIL TESTS. SOIL TEST MAY BE PREFORMED BY THE COOPERATIVE
EXTENSION SERVICE SOIL TESTING LABORATORY AT VPI&SU, OR BY A REPUTABLE COMMERCIAL LABORATORY. INFORMATION CONCERNING THE
STATE SOIL TESTING LABORATORY IS AVAILABLE FROM COUNTY EXTENSION AGENTS. IF SOIL TESTS ARE NOT POSSIBLE, DUE TO UNUSUAL
CONDITIONS, SEE THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK SECTION 3.32 FOR LIMING AND FERTILIZER NEEDS.
2. SEEDING: SEEDING SHALL BE APPLIED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER, OR HYDROSEEDER ON A FIRM, FRIABLE
SEEDBED. SEED DEPTH SHOULD BE 1/4 TO 1/2 INCH. FOR SEED SELECTION AND RATES SEE TABLE 3.32-D (THIS SHEET).
3. MULCHING: ALL PERMANENT SEEDING SHALL BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION. REFER TO MULCHING, STD.
& SPEC. 3.35 (TABLE 3.35-A PROVIDED THIS SHEET).
MOORES CREEK ADVANCED WATER RESOURCE
RECOVERY FACILITY
IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
NOTES
CIVIL
GENERAL NOTES AND LEGEND
FITTWE
HAZEN NO.
CONTRACT NO.:
DRAWING
NUMBER:
1111011=1l060
31442-008
1
C01
1
9VAC25-840-40. MINIMUM STANDARDS.
A VESCP MUST BE CONSISTENT WITH THE FOLLOWING CRITERIA,
TECHNIQUES AND METHODS:
1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO
DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON
ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE
APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT
FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS.
PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE
LEFT DORMANT FOR MORE THAN ONE YEAR.
2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCK PILES AND
BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT
TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY
PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON
SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED
FROM THE PROJECT SITE.
3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON
DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT
VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND
COVER IS ACHIEVED THAT IS UNIFORM, MATURE ENOUGH TO SURVIVE AND
WILL INHIBIT EROSION.
4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS
AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE
CONSTRUCTED AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND
SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES
PLACE.
5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN
STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER
INSTALLATION.
6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND
CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY
THE TRAP OR BASIN.
a. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134
CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY
CONTROL DRAINAGE AREAS LESS THAN THREE ACRES.
b. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF
FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES
SHALL BE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE
CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF
DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN THE
STRUCTURAL INTEGRITY OF THE BASIN DURING A 25-YEAR STORM OF
24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS
SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE CONDITIONS
EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED.
7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A
MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE
ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION
SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL
THE PROBLEM IS CORRECTED.
8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES
UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT
CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE.
9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE
OR OTHER PROTECTION SHALL BE PROVIDED.
10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING
CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER
CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED
OR OTHERWISE TREATED TO REMOVE SEDIMENT.
11. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS
OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY
REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE
INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL.
12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS
SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT
TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT
POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED
FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL
MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER
MATERIALS.
13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION
VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY
VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIAL
SHALL BE PROVIDED.
14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REQUIREMENTS
PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE
MET.
15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED
IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED.
16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE
WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE
CRITERIA:
a. NO MORE THAN 300 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE
TIME.
b. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF
TRENCHES.
C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR
PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH,
AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT
FLOWING STREAMS OR OFF -SITE PROPERTY.
d. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY
COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION.
e. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH
PROJECT
ENGINEER:
DESIGNED BY:
DRAWN BY:
CHECKED BY:
CONSTRUCTION 06/2021 gyp IF THIS BAR DOES NOT
MEASURE 1" THEN DRAWING
ISSUED FOR DATE gY IS NOT TO FULL SCALE
THIS CHAPTER.
f. APPLICABLE SAFETY REQUIREMENTS SHALL BE COMPLIED WITH
17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR
PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT
OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE
SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE
ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY.
SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR
SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA.
STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN
THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT
LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES.
18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL
BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER
THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE
AUTHORIZED BY THE VESCP AUTHORITY. TRAPPED SEDIMENT AND THE
DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY
MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER
EROSION AND SEDIMENTATION.
19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT
SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND
DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF
STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR
DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND
CRITERIA. STREAM RESTORATION AND RELOCATION PROJECTS THAT
INCORPORATE NATURAL CHANNEL DESIGN CONCEPTS ARE NOT MAN-MADE
CHANNELS AND SHALL BE EXEMPT FROM ANY FLOW RATE CAPACITY AND
VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS:
a. CONCENTRATED STORMWATER RUNOFF LEAVING A DEVELOPMENT SITE
SHALL BE DISCHARGED DIRECTLY INTO AN ADEQUATE NATURAL OR
MAN-MADE RECEIVING CHANNEL, PIPE OR STORM SEWER SYSTEM. FOR
THOSE SITES WHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE SYSTEM,
DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL OF THE PIPE OR PIPE
SYSTEM SHALL BE PERFORMED.
b. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED IN THE
FOLLOWING MANNER:
(1) THE APPLICANT SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE AREA
TO THE POINT OF ANALYSIS WITHIN THE CHANNEL IS ONE HUNDRED TIMES
GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF THE PROJECT IN
QUESTION; OR
(2) (A) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF A
TWO-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP
CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANKS.
(b) ALL PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS SHALL BE
ANALYZED BY THE USE OF A TEN-YEAR STORM TO VERIFY THAT STORMWATER
WILL NOT OVERTOP ITS BANKS AND BY THE USE OF A TWO-YEAR STORM TO
DEMONSTRATE THAT STORMWATER WILL NOT CAUSE EROSION OF CHANNEL
BED OR BANKS; AND
(c) PIPES AND STORM SEWER SYSTEMS SHALL BE ANALYZED BY THE USE OF
A TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL BE CONTAINED
WITHIN THE PIPE OR SYSTEM.
C. IF EXISTING NATURAL RECEIVING CHANNELS OR PREVIOUSLY
CONSTRUCTED MAN-MADE CHANNELS OR PIPES ARE NOT ADEQUATE, THE
APPLICANT SHALL:
(1) IMPROVE THE CHANNELS TO A CONDITION WHERE A TEN-YEAR STORM
WILL NOT OVERTOP THE BANKS AND A TWO-YEAR STORM WILL NOT CAUSE
EROSION TO THE CHANNEL, THE BED, OR THE BANKS; OR
(2) IMPROVE THE PIPE OR PIPE SYSTEM TO A CONDITION WHERE THE
TEN-YEAR STORM IS CONTAINED WITHIN THE APPURTENANCES;
(3) DEVELOP A SITE DESIGN THAT WILL NOT CAUSE THE PRE -DEVELOPMENT
PEAK RUNOFF RATE FROM A TWO-YEAR STORM TO INCREASE WHEN RUNOFF
OUTFALLS INTO A NATURAL CHANNEL OR WILL NOT CAUSE THE
PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TEN-YEAR STORM TO
INCREASE WHEN RUNOFF OUTFALLS INTO A MAN-MADE CHANNEL; OR
(4) PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT, STORMWATER
DETENTION OR OTHER MEASURES WHICH IS SATISFACTORY TO THE VESCP
AUTHORITY TO PREVENT DOWNSTREAM EROSION.
d. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE
THEIMPROVEMENTS.
e. ALL HYDROLOGIC ANALYSES SHALL BE BASED ON THE EXISTING
WATERSHED CHARACTERISTICS AND THE ULTIMATE DEVELOPMENT
CONDITION OF THE SUBJECT PROJECT.
f. IF THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER
DETENTION, HE SHALL OBTAIN APPROVAL FROM THE VESCP OF A PLAN FOR
MAINTENANCE OF THE DETENTION FACILITIES. THE PLAN SHALL SET FORTH
THE MAINTENANCE REQUIREMENTS OF THE FACILITY AND THE PERSON
RESPONSIBLE FOR PERFORMING THE MAINTENANCE.
g. OUTFALL FROM A DETENTION FACILITY SHALL BE DISCHARGED TO A
RECEIVING CHANNEL, AND ENERGY DISSIPATORS SHALL BE PLACED AT THE
OUTFALL OF ALL DETENTION FACILITIES AS NECESSARY TO PROVIDE A
STABILIZED TRANSITION FROM THE FACILITY TO THE RECEIVING CHANNEL.
h. ALL ON -SITE CHANNELS MUST BE VERIFIED TO BE ADEQUATE.
I. INCREASED VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR
SEDIMENTATION ON ADJACENT PROPERTY SHALL BE DIVERTED TO A STABLE
OUTLET, ADEQUATE CHANNEL, PIPE OR PIPE SYSTEM, OR TO A DETENTION
FACILITY.
j. IN APPLYING THESE STORMWATER MANAGEMENT CRITERIA, INDIVIDUAL
LOTS OR PARCELS IN A RESIDENTIAL, COMMERCIAL OR INDUSTRIAL
DEVELOPMENT SHALL NOT BE CONSIDERED TO BE SEPARATE DEVELOPMENT
PROJECTS. INSTEAD, THE DEVELOPMENT, AS A WHOLE, SHALL BE
CONSIDERED TO BE A SINGLE DEVELOPMENT PROJECT. HYDROLOGIC
PARAMETERS THAT REFLECT THE ULTIMATE DEVELOPMENT CONDITION SHALL
BE USED IN ALL ENGINEERING CALCULATIONS.
rA1•l:ar11111:4
A. MARCH ISSUED FOR
CONSTRUCTION
B.EDWARDS
0 1/2" 1"
k. ALL MEASURES USED TO PROTECT PROPERTIES AND WATERWAYS SHALL
BE EMPLOYED IN A MANNER WHICH MINIMIZES IMPACTS ON THE PHYSICAL,
CHEMICAL AND BIOLOGICAL INTEGRITY OF RIVERS, STREAMS AND OTHER
WATERS OF THE STATE.
I. ANY PLAN APPROVED PRIOR TO JULY 1, 2014, THAT PROVIDES FOR
STORMWATER MANAGEMENT THAT ADDRESSES ANY FLOW RATE CAPACITY
AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS
SHALL SATISFY THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR
NATURAL OR MAN-MADE CHANNELS IF THE PRACTICES ARE DESIGNED TO (I)
DETAIN THE WATER QUALITY VOLUME AND TO RELEASE IT OVER 48 HOURS;
(II) DETAIN AND RELEASE OVER A 24-HOUR PERIOD THE EXPECTED RAINFALL
RESULTING FROM THE ONE YEAR, 24-HOUR STORM; AND (III) REDUCE THE
ALLOWABLE PEAK FLOW RATE RESULTING FROM THE 1.5, 2, AND 10-YEAR,
24-HOUR STORMS TO A LEVEL THAT IS LESS THAN OR EQUAL TO THE PEAK
FLOW RATE FROM THE SITE ASSUMING IT WAS IN A GOOD FORESTED
CONDITION, ACHIEVED THROUGH MULTIPLICATION OF THE FORESTED PEAK
FLOW RATE BY A REDUCTION FACTOR THAT IS EQUAL TO THE RUNOFF
VOLUME FROM THE SITE WHEN IT WAS IN A GOOD FORESTED CONDITION
DIVIDED BY THE RUNOFF VOLUME FROM THE SITE IN ITS PROPOSED
CONDITION, AND SHALL BE EXEMPT FROM ANY FLOW RATE CAPACITY AND
VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS AS
DEFINED IN ANY REGULATIONS PROMULGATED PURSUANT TO § 62.1-44.15:54
OR 62.1-44.15:65 OF THE ACT.
M. FOR PLANS APPROVED ON AND AFTER JULY 1, 2014, THE FLOW RATE
CAPACITY AND VELOCITY REQUIREMENTS OF § 62.1-44.15:52 A OF THE ACT
AND THIS SUBSECTION SHALL BE SATISFIED BY COMPLIANCE WITH WATER
QUANTITY REQUIREMENTS IN THE STORMWATER MANAGEMENT ACT
(§ 62.1-44.15:24 ET SEQ. OF THE CODE OF VIRGINIA) AND ATTENDANT
REGULATIONS, UNLESS SUCH LAND -DISTURBING ACTIVITIES ARE IN
ACCORDANCE WITH 9VAC25-870-48 OF THE VIRGINIA STORMWATER
MANAGEMENT PROGRAM (VSMP) REGULATIONS.
n. COMPLIANCE WITH THE WATER QUANTITY MINIMUM STANDARDS SET
OUT IN 9VAC25-870-66 OF THE VIRGINIA STORMWATER MANAGEMENT
PROGRAM (VSMP) REGULATIONS SHALL BE DEEMED TO SATISFY THE
REQUIREMENTS OF SUBDIVISION 19 OF THIS SUBSECTION.
STATUTORY AUTHORITY
§ 62.1-44.15:52 OF THE CODE OF VIRGINIA.
HISTORICAL NOTES
FORMER 4VAC50-30-40, DERIVED FROM VR625-02-00 § 4; EFF SEPTEMBER 13,
1990; AMENDED, VIRGINIA REGISTER VOLUME 11, ISSUE 11, EFF. MARCH 22,
1995; VOLUME 29, ISSUE 4, EFF. NOVEMBER 21, 2012; AMENDED AND
RENUMBERED, VIRGINIA REGISTER VOLUME 30, ISSUE 2, EFF. OCTOBER 23,
2013.
EROSION AND SEDIMENT CONTROL
- LOD- LOD-
LIMITS OF DISTURBANCE
®
IP
INLET PROTECTION
SCE
GRAVEL CONSTRUCTION
ENTRANCE
SF
SF
SILT FENCE
B/M
SOIL STABILIZATION BLANKETS
TS
TEMPORARY SEEDING
PS
PERMANENT SEEDING
DC
DUST CONTROL
Hazen
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 500
RALEIGH, NORTH CAROLINA 27607
LICENSE NO.: C-0381
RIVANNA WATER & SEWER AUTHORITY
CHARLOTTESVILLE, VIRGINA
MOORES CREEK ADVANCED WATER RESOURCE
RECOVERY FACILITY
IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
OVERALL EROSION & SEDIMENTATION CONTROL NOTES
1. THE CONTRACTOR IS ENCOURAGED TO PHASE CONSTRUCTION TO MINIMIZE EXPOSED SOIL AREAS
THROUGHOUT THE PROJECT.
2. ALL ONSITE ACTIVITIES SHALL BE MANAGED TO INSURE NO ADVERSE IMPACTS TO WATER QUALITY
OCCUR DURING AND AFTER CONSTRUCTION. THE ACTIVITIES, AS DESCRIBED IN SPECIFICATION
SECTION 31 25 00, AND OTHERS, REQUIRE OVERSIGHT THROUGHOUT THE CONSTRUCTION AND
DEVELOPMENT PROCESS TO ASSURE THAT ALL WATER QUALITY STANDARDS ARE PROTECTED. SEE
SPECIFICATION SECTION 31 25 00 FOR FURTHER REQUIREMENTS.
3. THE CONTRACTOR SHALL FURNISH AND INSTALL ALL NECESSARY EROSION CONTROL MEASURES
WHETHER OR NOT SHOWN ON THE PLANS TO PROTECT ADJACENT CREEKS, RIVERS, ROADWAYS, ETC.
FROM SILTATION AND EROSION.
4. EACH EROSION AND SEDIMENTATION CONTROL MEASURE SHALL BE INSPECTED AT LEAST ONCE
EVERY FOUR BUSINESS DAYS OR AT LEAST ONCE EVERY FIVE BUSINESS DAYS AND NO LATER THAN 48
HOURS FOLLOWING A MEASURABLE STORM EVENT. IN THE EVENT THAT A MEASURABLE STORM EVENT
OCCURS WHEN THERE ARE MORE THAN 48 HOURS BETWEEN BUSINESS DAYS, THE INSPECTION SHALL
BE CONDUCTED ON THE NEXT BUSINESS DAY.
5. ALL PIPE WORK SHALL BE INSTALLED IN ACCORDANCE WITH STANDARD CONSTRUCTION TECHNIQUES.
ONLY THE LENGTH OF TRENCH IN WHICH PIPE CAN BE INSTALLED IN ONE DAYS TIME SHALL BE OPEN
AT ANY TIME, WITH SPOIL MATERIAL PLACED ON THE UPHILL SIDE OF THE TRENCH. PIPING SHALL BE
CAPPED AT THE END OF EACH WORK DAY TO PREVENT SEDIMENT FROM ENTERING PIPE. TRENCH
SHALL BE BACKFILLED AT END OF EACH WORKDAY AND DISTURBED AREA SEEDED WITH TEMPORARY
SEEDING MEASURES, AS APPROPRIATE.
6. ALL EROSION CONTROL MEASURES SHALL REMAIN IN PLACE UNTIL CONSTRUCTION IS COMPLETE,
PERMANENT VEGETATION IS ESTABLISHED ON ALL DISTURBED AREAS, AND APPROVAL BY THE
ENGINEER IS GIVEN. AREAS WHERE EROSION AND SEDIMENTATION CONTROL MEASURES ARE
REMOVED SHALL BE REGRADED AND SEEDED TO MATCH ORIGINAL SITE CONDITIONS.
EROSION & SEDIMENTATION CONTROL CONSTRUCTION SEQUENCING
1. NO CONSTRUCTION OR LAND DISTURBANCE ACTIVITIES SHALL BEGIN UNTIL TEMPORARY
SEDIMENT AND EROSION CONTROL MEASURES HAVE BEEN INSTALLED. CONTRACTOR SHALL
INSTALL SILT FENCE AS SHOWN ON THE DRAWING FOR TEMPORARY PERIMETER EROSION
CONTROL.
2. ONCE THE SITE HAS BEEN CLEARED AND GRUBBED, AND ALL SILT FENCE HAS BEEN INSTALLED,
ALL APPROPRIATE UTILITY REROUTING SHALL COMMENCE. ONCE ALL PERMANENT UTILITIES HAVE
BEEN ROUTED, THE EXCAVATION SUPPORT SYSTEM MAY BE FURBISHED. ALL MAJOR EXCAVATION
AND DEMOLITION ACTIVITIES MAY OCCUR AFTER SUPPORT SYSTEM HAS BEEN VERIFIED BY THE
ENGINEER.
3. TEMPORARY SEEDING MEASURES SHALL BE EMPLOYED THROUGHOUT THE DURATION OF
CONSTRUCTION ACTIVITIES ON ANY AREA WHICH WILL REMAIN UNDISTURBED FOR MORE THAN 7
WORKING DAYS OR 14 CALENDAR DAYS, WHICHEVER IS SHORTER. ALL SLOPES STEEPER THAN
3HA V SHALL BE PLANTED OR OTHERWISE PROVIDED WITH TEMPORARY OR PERMANENT GROUND
COVER, DEVICES, OR STRUCTURES SUFFICIENT TO RESTRAIN EROSION WITHIN 7 CALENDAR DAYS.
ALL OTHER SLOPES OF 3HAV OR FLATTER, EXCEPT THOSE GREATER THAN 50 FT IN LENGTH,
SHALL BE PROVIDED WITH TEMPORARY OR PERMANENT GROUND COVER, DEVICES, OR OTHER
STRUCTURES SUFFICIENT TO RESTRAIN EROSION WITHIN 14 CALENDAR DAYS.
4. PERMANENT SEEDING SHALL BE INSTALLED, IN THE PROPER PLANTING SEASON, FOR ALL AREAS
REACHING FINAL GRADE WHICH WILL NOT BE DISTURBED AGAIN. IF PLANTING SEASON IS NOT
APPROPRIATE FOR PERMANENT SEEDING CONTRACTOR SHALL RE -SEED AREA WITH PERMANENT
SEEDING WHEN SEASON ALLOWS.
5. UPON COMPLETION OF FINAL GRADING, PERMANENT STRUCTURAL OR VEGETATIVE STABILIZATION
SHALL BE ESTABLISHED.
6. ALL EROSION AND SEDIMENTATION CONTROL MEASURES SHALL BE MAINTAINED THROUGHOUT
THE DURATION OF CONSTRUCTION ACTIVITIES AND THE SITE HAS BEEN PERMANENTLY
STABILIZED WITH STRUCTURAL AND/OR PERMANENT VEGETATIVE MEASURES.
7. CONTRACTOR SHALL PERFORM SITE INSPECTION AND MAINTENANCE ONCE EVERY5 BUSINESS
DAYS AND WITHIN 48 HOURS AFTER MEASURABLE STORM EVENT.
8. ONCE PERMANENT STABILIZATION HAS OCCURRED, TEMPORARY SEDIMENT CONTROL MEASURES
MAY BE REMOVED UPON APPROVAL FROM THE ENGINEER AND ALBEMARLE COUNTY. ANY AREAS
DISTURBED BY THE REMOVAL OF EROSION CONTROL MEASURES SHALL BE RETURNED TO THE
ORIGINAL, OR BETTER, CONDITION BEFORE SEEDED, MULCHED, AND FERTILIZED.
EROSION AND SEDIMENT CONTROL MEASURES:
TEMPORARY MEASURES:
• CONSTRUCTION ENTRANCE PER STD 3.02
• SILT FENCE PER STD 3.05
• GRAVEL DROP INLET SEDIMENT FILTER PER STD 3.07-2
• CURB INLET SEDIMENT FILTER PER STD 3.07-6
• TEMPORARY SEEDING PER STD 3.31
PERMANENT MEASURES:
• SOIL STABILIZATION BLANKETS PER STD 3.36
• PERMANENT STABILIZATION: AREAS OF THE SITE THAT WILL NOT BE PAVED
WILL BE SEEDED AND MULCHED ACCORDING TO THE VIRGINIA EROSION AND
SEDIMENT CONTROL HANDBOOK REQUIREMENTS PER STD 3.32
EROSION AND SEDIMENT CONTROL MAINTENANCE NOTES:
IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE
CHECKED AFTER EACH RAINFALL OR WEEKLY, WHICHEVER IS MORE FREQUENT,
AND SHOULD BE CLEANED AND REPAIRED ACCORDING TO THE FOLLOWING
SCHEDULE:
1. EROSION AND SEDIMENT CONTROLS WILL BE CHECKED REGULARLY FOR
UNDERMINING OR DETERIORATION AND BUILDUP OR CLOGGING WITH
SEDIMENT. CORRECTIVE ACTION SHALL BE TAKEN IMMEDIATELY.
2. FREQUENT INSPECTIONS AND CLEANING OF MUD AND DEBRIS FOUND
OUTSIDE OF THE LIMITS OF DISTURBANCE IS REQUIRED, ALONG WITH ANY
OTHER REMEDIES REQUIRED BY THE COUNTY.
3. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD
STAND OF GRASS IS MAINTAINED. AREAS SHALL BE RESEEDED AS NEEDED.
TEMPORARY STABILIZATION WILL BE USED AS REQUIRED BY THE COUNTY.
r.JTWE
HAZEN NO.
CIVIL CONTRACT NO.
EROSION AND SEDIMENT CONTROL NOTES DRAWING
NUMBER:
JUNE 2021
31442-008
1
CO2
REV
MAIN PLANT ENTRANCE
PROPERTY LINE, TYP. -
CITY OF CHARLOTTESVILLE LIMITS
100 YEAR FLOODPLAIN, TYP.
1 �OpyR
FLOODWAY. TYP.
100' STREAM BUFFER, TYP.
i
: ............
o....�t..........'
.Cp..................
g
PROPOSED USE: INDUSTRIAL (UTILITY)
OWNER: RIVANNA WATER & SEWER AUTHORITY
PROPERTY: MOORES CREEK ADVANCED WATER
RESOURCE RECOVERY FACILITY
TOTAL PROPERTY SIZE: 89.46 ACRES
TAX MAP/PARCEL: 077-40A
ZONING: LI (LIGHT INDUSTRIAL); ENTRANCE CORRIDOR (EC)
MAGISTERIAL: SCOTTSVILLE
COUNTY: ALBEMARLE
STATE: VIRGINIA
ENGINEER: HAZEN AND SAWYER
4011 WESTCHASE BLVD
SUITE 500
RALEIGH NC 27607
NO SURVEY CONDUCTED FOR THIS PROJECT; SITE TOPOGRAPHY IS FROM
BASE FILES FROM PREVIOUS PLANT IMPROVEMENT SURVEYS.
DATUM: HORZ: NAD83 VIRGINIA SOUTH ZONE
VERT: NAVD88
THIS SITE IS SUBJECT TO THE ALBEMARLE COUNTY FLOOD HAZARD OVERLAY
DISTRICT. THIS SITE IS NOT LOCATED WITHIN THE WATERSHED OF A PUBLIC
WATER SUPPLY RESERVOIR.
100 YEAR FLOODPLAIN ELEVATION: 324.00'
REFERENCE: FEMA MAP # 51003CO289D, EFFECTIVE 2/4/2005 AND LOMR
16-03-1107P, EFFECTIVE 2/6/2017.
WAIVERS FOR DETENTION, TRAVELWAY WIDTH AND LANDSCAPE PLAN
REQUIREMENTS HAVE BEEN GRANTED UNDER THE MAJOR AMENDMENT
REVIEW OF SDP200800100.
SETBACKS (MET OR N/A)
FRONT MINIMUM: 10' FROM THE R-O-W OR EXTERIOR EDGE OF
SIDEWALK IF SIDEWALK IS OUTSIDE OF R-O-W
FRONT MAXIMUM: NONE
SIDE AND REAR MINIMUM: 50' BETWEEN PUBLIC R-O-W, RURAL AREAS, OR
THE MONTICELLO HISTORIC DISTRICT AND
STRUCTURE; 30' BETWEEN OFF-STREET PARKING
AND THE DISTRICT BOUNDARY.
SIDE AND REAR MAXIMUM: NONE
l 100`fR
�.
GRIT REMOVAL FACILITY
IMPROVEMENTS, SDP2015-145
CLARIFIER COVER
CONSTRUCTION, SDP2015-145
�� WTERSTATE 64 CORRIDOR
ADJACENT PARCELS
NO. OWNER TAX MAP PARCEL NO I DB-PG ZONING USE
1
RIVANNA WATER AND SEWER AUTHORITY
77
38B
5111 - 166
LIGHT INDUSTRY
INDUSTRIAL
2
RIVANNA WATER AND SEWER AUTHORITY
78
22A
5125-573
LIGHT INDUSTRY
INDUSTRIAL
3
ELEMENTAL ECOTECH LLC
77
40B
495-325
LIGHT INDUSTRY
OPEN
4
TREM COMMERICAL RENTALS LLC
77
40N
2893-653
LIGHT INDUSTRY
WAREHOUSE
5
LACY MECHANICAL INC
77
40P
3655-442
LIGHT INDUSTRY
GARAGE
6
BROADWAY CENTER LLC
77
40P1
4436-471
LIGHT INDUSTRY
WAREHOUSE
7
WOOLEN MILLS
78
21B
639-193
C1 COMMERCIAL
COMMERCIAL
LIMITS OF DISTURBANCE:57500 SF (1.32 AC)
150' 75' 0 150'
SCALE: 1" = 150'
CIATED SITE PLANS:
SDP20800100 (APPROVED JAN 2009)
SITE PLAN SUBMITTAL FOR THE EXPANSION OF MOORES CREEK WWTP WITH REGARDS TO
THE NUTRIENT REMOVAL IMPROVEMENT PROJECT.
ASSOCIATED SITE PLAN REVISIONS:
SDP2010-82 (APPROVED JAN 2011)
SITE PLAN SUBMITTAL FOR IMPROVEMENTS TO THE EXISTING MOORES CREEK
PUMP STATION AND ITS ASSOCIATED PROPOSED FORCE MAIN.
SDP2012-40 (APPROVED OCT 2012)
ir
SITE PLAN SUBMITTAL FOR DIGESTER IMPROVEMENTS AT THE EXISTING
MOORES CREEK WWTP
SDP2013-33 (APPROVED SEPT 2013)
SITE PLAN FOR CONSTRUCTION OF NEW RIVANNA PUMP STATION AND
INTERCEPTOR TUNNEL.
SDP 2015-145 (APPROVED SEPT 2015)
MINOR SITE PLAN AMENDMENT FOR ODOR CONTROL IMPROVEMENTS.
SDP 2020-015 (APPROVED OCT 2020)
MINOR SITE PLAN AMENDMENT FOR ENGINEERING TRAILER ADDITION AND
PARKING LOT EXPANSION
PROJECT
ENGINEER: B. PORTER
ISSUED FOR
CONSTRUCTION
-
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 500
RALEIGH, NORTH CAROLINA 27607
LICENSE NO.: C-0381
RIVANNA WATER & SEWER AUTHORITY
CHARLOTTESVILLE, VIRGINA
NOTES
CIVIL
LOCATION INFORMATION
DATE: JUNE 2021
DESIGNED BY: A. MARCH
HAZEN NO.: 31442-008
DRAWN BY: A. MARCH
CONTRACT NO.: 1
MOORES CREEK ADVANCED WATER RESOURCE
RECOVERY FACILITY
IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
CHECKED BY: B. EDWARDS
DRAWING
NUMBER:
CO3
MIF THISBARDOESNOT 0 1 "
MEASURE 1" THEN DRAWING
IS NOT TO FULL SCALE
1
CONSTRUCTION
06/2021
gyp
REV
ISSUED FOR
DATE
BY
000
MAIN PLANT ENTRANCE
PROPERTY LINE, TYP.
dQ` /
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8
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ABANDONED CONIDITONING TANK TO BE DEMOLISHED /
IN -PLANT CLARIFIERS TO BE DEMOLISHED
1
LIME SILO AND ELECTRICAL SHED
TO BE DEMOLISHED
LIMITS OF DISTURBANCE, TYP.
/ VA001
2" MILL AND OVERLAY, TYP. t1A001 sF\
IF
}
1 / �
-
i/ 00
LIMITS OF DISTURBANCE:57500 SF (1.32 AC)
g
g4 CORRIDOR �_ -- TERS TE — --_
�i IOW TA _—_
CONSTRUCTION
ISSUED FOR
PROJECT
ENGINEER: B. PORTER
DESIGNED BY: A. MARCH
DRAWN BY: A. MARCH
CHECKED BY: B. EDWARDS
IF THIS BAR DOES NOT 0 1/2" 1"
MEASURE 1" THEN DRAWING
IS NOT TO FULL SCALE
06/2021
BYP
DATE
BY
-/- PLAN
�— SCALE: 1" = 150'
ISSUED FOR
CONSTRUCTION
Hazen
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 500
RALEIGH, NORTH CAROLINA 27607
LICENSE NO.: C-0381
RIVANNA WATER & SEWER AUTHORITY
CHARLOTTESVILLE, VIRGINA
MOORES CREEK ADVANCED WATER RESOURCE
RECOVERY FACILITY
IN -PLANT CLARIFIER AND LIME SILO DEMOLITION
SITE
CIVIL
OVERALL SITE PLAN
DATE: JUNE 2021
HAZEN NO.: 31442-008
CONTRACT NO.: 1
C10
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ni 1 I I — _ 1L'_Pw ---- JJ I ------- ❑ r:------. � . — -- }rP ------ ----
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rn
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yy1AREA fy 1 1 1 1 111 CONDITIONING I CLARIFIER CLARIFIER 1 I FILTERS
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\\ O\\ \ 100YEAR FLOODPLAIN Ii i I �� �� • �� I I I I --------------- I I 1 3" EW ��_—�
❑p�t3 \\ `r \ / — ---------18' PE ----- —��---------------- _=------------------------- L==_____________ —= r
EW
---- II_ ! �p --—-------------- — �s----------------- r
-----\�-- --- EW 1—--------------- -- — ——----------------- 3„ EW —_ 2„ Pw� 1 1 1
\�\ 100' STREAM BUFFER r //Q II 3 EW—_—_—__ _— _--=_1=A@APdB(�P�=_ _�� _———______2ABJ>l9AI-- __ 1$'�YPASS ABANDON —_—_—_—__ I I 1 I 1
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\ \ \ \\ � 1--.':.. is 'i'. '.'� .r +,.{ 1: ?t 'i ter: J:' r-. _yy: 'Z:i. i'J:�•.f•..: .iY..•.�:: Y:. ..�:. :, a•. ..t :�•. . ..y.:.. C/IN ''.''' 's i�;,� 1
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\\ \ \ I FLOOD WAY ]�_ = i 1 \� I V) ' r:' 1 I ° 4 III 1 � N1 — BACKWASH WASTE
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- 1 1
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15 1
ASPHALT PAVEMENT ytA
�9 \ �_ — \ \\\ / ❑ III o ^ -— .
�. \ �==ate ------ - ��� � ❑ � -
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\\\ 1 \\ '-E�------------�---- ------ ^ --- 4 ��P--------
PLAN 20 10 0 20'
SCALE: 1" = 20' SCALE: 1" = 20'
PROJECT
ENGINEER: B. PORTER DATE:
RIVANNA WATER & SEWER AUTHORITY
DESIGNED BY: A. MARCH CHARLOTTESVILLEaze7 SITE VIRGINA HAZENNO.: 31442-008
DRAWN BY: A. MARCH ISSUED FOR CONTRACT NO.: 1
CONSTRUCTION - MOORES CREEK ADVANCED WATER RESOURCE CIVILDRAWING
EXISTING SITE AND YARD PIPING PLAN NUMBER:
CHECKED BY: B. EDWARDS HAZEN AND SAWYER
IF THIS BAR DOES NOT 0 1/2" 11. 4011 WESTCHASE BOULEVARD, SUITE 500 RECOVERY FACILITY
1 CONSTRUCTION 06/2021 BYP MEASURE 1" THEN DRAWING RALEIGH, NORTH CAROLINA27607 IN -PLANT CLARIFIER AND LIME SILO DEMOLTION C11
REV ISSUED FOR DATE BY IS NOT TO FULL SCALE LICENSE NO.: C-0381
SECONDARY _
DIGESTER
wwmw� � � � � � �
— PRIMARY
PRIMARY PRIMARY
DIGESTER NO. 1
DIGESTER NO. 2 DIGESTER NO. 3
NOTES:
1. SEE DRAWING CO2 FOR EROSION AND SEDIMENT
CONTROL NOTES, AND STANDARD SYMBOLS.
^s
T
10
ik
IP
9M9=!—mmmwk1 Mime 10
SLUDGE
STORAGE
LOD
SOIL TYPE BOUNDARY, TYP.
SEE SOIL CHART. C01 «.oj+Nr
EXCAVATION SUPPORT SYSTEM BY ASPHALT PAVEMENT
CONTRACTOR, SEE NOTE 1, DRAWING C13
LOD LOD
r
O
0
t
r
O
0
METHANE SCRUB
BOXES
BOILER FACILITY
GENERATORS 1 }ti
I7
ASPHALT PAVEMENT
A
D LOD LOD LOD
r
' y rn
CURB INLET PROTECTION, I IN -PLANT IN -PLANT 0 TERTIARY
55 AREA rnn SEE DETAIL 3.07-6, CDI I III "' I CLARIFIER CLARIFIER FILTERS
I LIMITS OF DISTURBANCE
CONDITIONING
' TANK STRUCTURE
rV
(ABANDONED) I g
' I STOCKPILE/CONTRACTOR 0
SILT FENCE, I CONTROL LAYDOWN AREA
IP \ SEE DETAIL 3.05, CD1 !�
HN
QSOIL STABILIZATION BLANKETS
�i O
0
GRAVEL CONSTRUCTION ENTRANCE,Cwc.PAD �� 4 PS SEE DETAIL 3.02, CD1
11
TS r LOD L
DC �
O
CE o 0
ZZ
,F1A1A+ o SF o
100YEAR FLOODPLAIN SF SF SF SF SF SF — SF SF SF SF SF SF SF —
pB-13 DROP INLET PROTECTION, Ol OOl OOl OOl OOl r OOl OOl OOl OOl OOl
SEE DETAIL 3.06-2, CD1 r0
'
I-'lew_13 O 00 �
C
100' STREAM BUFFER Wet I
(10-1l "A CCONC. SWALE TA CONC. SWALE
lip
N Qy� - F. ... JG "� PLATFORM
[_ \'„/IIt.i .'�.•. .t' is♦, Y: .l 'i ter: J: .. 'i :` :i v,•,f. .lY...i�: Y:. ..�.:�.. ..F. - ', �i/�'a• .s ram'. 1OOY I
YR
A4 : A 100)R - IUUTK
. I 1 J
as A e 100)R
a 100
LIMO SILO Q 1� 100
4 Q A . �.
,a 4 . e ; A , , . ccc
I I
FLOODWAY . t.,�: A ' , 4 A CONCRETE PLATPoRM a I BACKWASH WASTE
CONCRETE 4 SOLIDS HANDLING RECLAIM BASIN
_ >.. 4 PLATFORM a LECTRICAAL SHED BUILDING
4 A ° 4
Al A 4 4/ f.
\ ; �.. e 4 A
\ 4 a A ASPHALT PAVEMENT
\ No , A A
a 4 I I
\ I I
0� \ 100\R
71t)I /
\ 83 \ \ ASPHALT PAVEMENT py.15 �- Q
CCc I I '� C)
PLAN 20 10 0 20'
SCALE: 1" = 20' SCALE: 1" = 20'
PROJECT
ENGINEER: B. PORTER DATE:
RIVANNA WATER & SEWER AUTHORITY
DESIGNED BY: A. MARCH HazeCHARLOTTESVILLE, VIRGINA SITE HAZENNO.: 31442-008
DRAWN BY: A. MARCH ISSUED FOR CONTRACT NO.: 1
CONSTRUCTION _ CIVIL
CHECKED BY: B. EDWARDS HAZEN AND SAWYER MOORES CREEK ADVANCED WATER RESOURCE EROSION AND SEDIMENT CONTROL PLAN NDRAWING
UMBER:
IF THIS BAR DOES NOT 0 1/2" ill 4011 WESTCHASE BOULEVARD, SUITE 500 RECOVERY FACILITY
1 CONSTRUCTION 06/2021 BYP MEASURE 1 "THEN DRAWING RALEIGH, NORTH CAROLINA27607 IN -PLANT CLARIFIER AND LIME SILO DEMOLTION C12
REV ISSUED FOR DATE BY IS NOT TO FULL SCALE LICENSE NO.: C-0381
I o
RET.
REROUTE 2 4 PW
SEE NOTE 3
REROUTE 1 4" EW 'I r
II SEE NOTE 3
DEMOLISH ABANDONED CONDITIONING
TANK IN ITS ENTIRETY
I �
I I DEMOLISH AND CAP 16" FM
DEMOLISH AND CAP 24" RAS
I �
DEMOLISH AND CAP MS
I 1�
I
REROUTE 8" TS, SEE NOTE 3
\ I I REROUTE 8" IDS, SEE NOTE 3
\J i DEMOLISH AND CAP 8" HWS
----- DEMOLISH AND CAP 8" HWR
DEMOLISH AND CAP 6" A
�I DEMOLISH AND CAP (2) 8" PS
--- \\� —-DEMOLISH SIDEWALK ------
I\ �
1 1 CONSTRUCTION
REV ISSUED FOR
SECONDARY
DIGESTER
SLUDGE
STORAGE
47— LOD
PROJECT
ENGINEER: B. PORTER
DESIGNED BY: A. MARCH
DRAWN BY: A. MARCH ISSUED FOR
CONSTRUCTION
CHECKED BY: B. EDWARDS
IF THIS BAR DOES NOT 0 1/2" 1"
06/2021 BYP MEASURE 1" THEN DRAWING
DATE BY IS NOT TO FULL SCALE
PRIMARY
DIGESTER NO. 1
PRIMARY
DIGESTER NO. 2
0
—
IE
:.: I I I
PRIMARY
DIGESTER NO. 3
DEMOLISH 12" SD
SEE NOTE 2
4'a
\
1
REROUTE 4" / 1 a EW, SEE NOTE 3
I
\\
PLUG SS MANHOLE ASPHALT PAVEMENT ----
ALT PA 7- DEMOLISH 1 4" EW--------�---I
I ------_
_--------
— — — — — — —
—,I �
-----------
------------�---
--- DEMOLISH SIDEWALK,TYP.
I I
_
I
ID = DEMOLISH 12" SS,
LOD
—
SEE NOTE 4
�—
-�
----
--
—
—
—
o
-------------------
-------------------
I--01
BOILER FACILITY
DEMOLISH (2) 24" PE
_ t I SEE NOTE 4 {
\ I II _RA }ti
PLLSGtAULT ENETORS
II
\ —-----------__—_—_— _ fl
DEMOLISH IN -PLANT CLARIFIERS IN THEIR ENTIRETY I I
I` ILOD LOD —L LOD LOD
II
III I L--------------- --- ------
EXCAVATION SUPPORT SYSTEM I i
SEE NOTE 1 O I I
r
R �I p II
cow
DEMOLIS " D
° II
DE ISH 8" SD
LIMITS OF DISTURBANCE, TYP. p
I I
DEMOLISH (3) 24" ML l
Zma 01:1
DEMOLISH 18" BYPASS
�;\������� I f •1 DEMOLISH SIDEWALK AND STAIRS I I I i —LOD—
DEMOLISH SD MH l DEMOLISH AND CAP 12" FM
DEMOLISH AND CAP 2" EW
I
II
•PLUG
SS MANHOLE
••
••
•• I ••
•• ••
••
■
..t'
i., ".
.1. .. .
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as
sa : .. n
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}.;
a
a
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a
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/
a 6 /
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4
CONCRETE
F
a PLATFORM
a
it
II
a
III
41
A
/ /
c
I
III
/
I
a
a
a e
a
a q a
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a
- DEMOLISH LIME SILO,'OON'R
SEE NOTE 5
- DEMOLISH ELECTRICAL SHED
SOLIDS HANDLING
BUILDING
- DEMOLISH ABOVE GRADE
OUTFALL PIPE, SEE NOTE 5
�f-----------------------------:_ -_
% / ❑�•.
ASPHALT PAVEMENT � a
COG
-—`— — — — — — — — — — ---
SCALE: 1" = 20'
Hazen
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 500
RALEIGH, NORTH CAROLINA 27607
LICENSE NO.: C-0381
A/C
RIVANNA WATER & SEWER AUTHORITY
CHARLOTTESVILLE, VIRGINA
MOORES CREEK ADVANCED WATER RESOURCE
RECOVERY FACILITY
IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
--------- /_—_NOTES:
LOD
T
/ 1.
EXCAVATION SUPPORT SYSTEM IS SHOWN
/
PICTORIALLY ONLY FOR CONTRACTOR REFERENCE
/
AND SHALL NOT BE CONSIDERED TO INCLUDED
ALL REQUIRED EXCAVATION SUPPORT TO PERFORM
THE REQUIRED WORK. CONTRACTOR SHALL BE
/
EXCLUSIVELY RESPONSIBLE FOR EXCAVATION
/
SUPPORT SYSTEM DESIGN AND INSTALLATION
/
INCLUDING VIBRATION MONITORING AND A
VIBRATION MONITORING PLAN. CONTRACTOR
SHALL SUBMIT DRAWINGS AND DESIGN
CALCULATIONS FOR PROPOSED EXCAVATION
SUPPORT SYSTEM SEALED BY A CURRENTLY
REGISTERED PROFESSIONAL ENGINEER IN THE
COMMONWEALTH OF VIRGINIA. CONTRACTOR
SHALL REFERENCE CONTRACT SPECIFICATION
SECTION 31 00 01 - EARTHWORK. EXCAVATION
io
SUPPORT SYSTEM SHALL BE REMOVED IN IT'S
ENTIRETY AT COMPLETION OF CONSTRUCTION
ACTIVITIES.
_-----_-- _= 2.
CONTRACTOR SHALL BE RESPONSIBLE FOR
TEMPORARILY REROUTING STORMWATER FROM 12"
SD DURING EXCAVATION ACTIVITIES. SEE C15
�\
FOR RECONNECTION DETAILS OF 15" SD AFTER
DEMOLITION ACTIVITIES ARE COMPLETE. FOR
—
\�\
CONTRACTOR INFORMATION, THE 2 YEAR STORM
FOR THIS 12" SD IS 1.0 CFS.
3.
EXISTING 212" PW, 1 4" EW, 8" TS, AND 8" IDS
�.r
SHALL BE REROUTED BEFORE EXCAVATION
ACTIVITIES, AS SHOWN ON C15. CONTRACTOR
SHALL EXERCISE EXTREME CAUTION AROUND THE
REROUTED PIPES DURING EXCAVATION.
CONTRACTOR SHALL COORDINATE WITH OWNER
FOR ANY REROUTING THAT WILL CAUSE A
PROCESS DISTURBANCE TO THE PLANT. THE 8" TS
AND 8" IDS LINES WILL ONLY BE ALLOWED OUT OF
SERVICE FOR A MAXIMUM DURATION OF 24
HOURS. CONTRACTOR SHALL SUBMIT DETAILED
PLAN TO OWNER AND ENGINEER FOR REVIEW
PRIOR TO PROCEEDING WITH WORK.
4.
(2) 24" PE AND 12" SS LINES SHALL BE
DEMOLISHED PRIOR TO MAJOR EXCAVATION
ACTIVITIES TO AVOID CONFLICT WITH
EXCAVATION SUPPORT.
5.
DEMOLITION OF LIME SILO SHALL INCLUDE
REMOVAL OF ALL STRUCTURES AND ASSOCIATED
EQUIPMENT ABOVE CONCRETE PAD, CONTRACTOR
SHALL RESTORE AND FILL ANY DAMAGES OR
HOLES LEFT BY DEMOLITION ACTIVITIES. SEE
DRAWINGS S20-S23 FOR STRUCTURAL DETAILS OF
LIME SILO.
6.
CONTRACTOR SHALL LIMIT ALL VEHICULAR
TRAFFIC A MINIMUM OF 10 FEET FROM RETAINING
WALL. CONTRACTOR SHALL BE RESPONSIBLE FOR
— LOD LOD —
PROVIDING ANY TEMPORARY SHORING OF
RETAINING WALL AS REQUIRED TO COMPLETE
WORK.
OOl OOl OOl OOl OOl
------------------
-------------------III
II
!M
II
A" I I
AlT PAYE]AENT
------------------------��
II
BACKWASH WASTE
RECLAIM BASIN
\ 100)7�
_______________________� x _II_____________
________________________ — ZZ------------
------------
I �
20 10 0 20'
SCALE: 1" = 20'
DATE: JUNE 2021
HAZEN NO.: 31442-008
SITE CONTRACT NO.: 1
CIVIL
DRAWING
DEMOLITION PLAN NUMBER:
C13
x
In55 AREA
IA
O
1 CONSTRUCTION
REV ISSUED FOR
SECONDARY
DIGESTER
SLUDGE
STORAGE
#?�0 LOD i '� . LOD
\ 356 DROP INLET,
SEE C15 �®
100 YEAR FLOODPLAIN -
340
100'STREAM BUFFER
\ FLOODWAY
1
-'�}-100YR /
M
M
I
PROJECT
ENGINEER: B. PORTER
DESIGNED BY: A. MARCH
DRAWN BY: A. MARCH ISSUED FOR
CONSTRUCTION
CHECKED BY: B. EDWARDS
IF THIS BAR DOES NOT 0 1/2" 1"
06/2021 BYP MEASURE 1" THEN DRAWING
DATE BY IS NOT TO FULL SCALE
PRIMARY
DIGESTER NO. 1
354 �
358
1
360
PRIMARY
DIGESTER NO. 2
ASPHALT PAVEMENT
9D LOD -
LOD
r
0
0 A
REPLACE 4' SIDEWALK, TYP.
C-32-0520
ICJ
�s
/ CONTROL 34B
Ill
V
- REPLACE 4' CONC. STAIR /
C-32-0521
OOl
'35n_
PRIMARY
DIGESTER NO. 3
0
BOILER FACILITY
LOD LOD
OOl 0Ol
LOD
GENERATORS
r
0
0
OOI� r OOl
C7
RESTORE CURB AND GUTTER AS
NECESSARY TO MATCH EXISTING -
TL
LL LOD
OOl OOl
OOl
NOTES:
1. CONTRACTOR SHALL MATCH THE EXISTING GRADE
AND DRAINAGE PATTERNS OF THE ASPHALT
PAVEMENT. SEE C10 FOR FULL EXTENT OF 2" MILL
AND OVERLAY.
0
TERTIARY
FILTERS
TYPICAL PAVEMENT
JUNCTION
as
Aa : °
A.
°•
100YR
IFIRAW
p�0
hP\
100YR�toorR
9
100
a a A
,
A. 4 'a
, 4 a CONCRETE ,•""_
4.
i
I BACKWASH WASTE
r.
PLATFORM
326
SOLIDS HANDLING
RECLAIM BASIN
�:a: '.•
.a
A °
BUILDING
a
°a .
A
a
I
2" MILL AND OVERLAY, TYP.
001jP
� . °
.
I
SEE NOTE 1
41
/ e
- ° 4 A
6
•. 4
+ 324 +
+
+
+ +
+
+ + +
+
+ + + O+
+
+ + +
+ +
+ + + + +
+ +
+ + ®+
TYPICAL PAVEMENT
JUNCTION
+
+
+
+ � +� +—
�+
+ + +
+.
+ + + + +
+
+ + +
C-32-0555R
+
n+�+ •
1£,S_y T +
+
+ + + + + +
+ +
+ + +
+
+ -+yy� ' ' + +
+ +
+ + + I
\
+
+
+
+ + + + + +
+ +
+ +
+I
(�%�
+ + "T + + '+
+
+
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+
I ryl pg-14'�
+ + +
+
+ + + + + +
+ +
+ + +
+ +
+ + Q ` + +
+ +
+ +
x 322 X I + + + + + +
+ + + +�
SCALE: 1 = 20
ALL VALVES AND BOXES SHALL MATCH
NEW PAVEMENT ELEVATION, TYP. SCALE: 1" = 20'
RIVANNA WATER & SEWER AUTHORITY
Haze
CHARLOTTESVILLE, VIRGINA
HAZEN AND SAWYER MOORES CREEK ADVANCED WATER RESOURCE
4011 WESTCHASE BOULEVARD, SUITE 500 RECOVERY FACILITY
RALEIGH, NORTH CAROLINA27607 IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
LICENSE NO.: C-0381
SITE
CIVIL
FINAL SITE PLAN
20 10 0 20'
DATE: J U N E 2021
HAZEN NO.: 31442-008
CONTRACT NO.: 1
Li
1 1 CONSTRUCTION
REV ISSUED FOR
RET.
SECONDARY
DIGESTER
SLUDGE
STORAGE
' PLUG MANHOLE
CAP 8" HWR
CAP 8" HWS
4" EW
2 4' PW
8" DS
8" TS
CAP 16" FM
CAP 6"A
CAP (2) 8" PS
PRIMARY / \PRIMARY PRIMARY
DIGESTER NO. 1 DIGESTER NO. 2 / \ DIGESTER NO. 3
ElEC7J BOX \\\
\�\
_-- _ EX. DROP INLET III \\\
TOP: 355.00' 1 I I I \\\\
INV OUT:352.15' }�
30 LF, 12" DIP SD @ 6.83%
--- - - - - - -------------�---I
---- ASPHALT PAVEMENT--------�--- __---- — _ --
DROP INLET ..--�IIE
TOP: 353.80' /`ll
INV IN: 350.10'
INV OUT: 349.07' I r I BOILER FACILITY {
C-22-0302 PLUG VAULT I I I GENERATORS T�
I I I
—1—_— _—L------- -- — I I
—�— ---- — f— — — — — — — ---
141 LF, 15" DIP SD @ 13.4%
I� II I I I
�` IIII I L----------------
I IIII -
L-------------------------
PROJECT
ENGINEER: B. PORTER
DESIGNED BY: A. MARCH
DRAWN BY: A. MARCH ISSUED FOR
CONSTRUCTION
CHECKED BY: B. EDWARDS
IF THIS BAR DOES NOT 0 1/2" 1"
06/2021 BYP MEASURE 1" THEN DRAWING
DATE BY IS NOT TO FULL SCALE
PLUG MANHOLE
CAP 6" A
CAP 6" DISCHARGE
CAP 2" EW
---------------
=_�
-- _=______====ter
EX. DROP INLET
C
II TOP:333.55' O
INV IN: 330.15' ,RET. WALL
INV OUT: 329.65'
---------------------
------------
A`o1�iLi}lj'^,�
_r= - mill m
CAP 18" FM
== - -----------
..: •.,: ..
{ � .M. .� t < .%!'. +.: ��( i - v4r :r': , .; -.L". ���.'�. -'•' : •.t, :: '.t �•� � �-• :.,y .:1. : �y.:: '•.. y: .5 9y.•
44
A Aa . A a '. r —1o0YR — p�C
0°)R ��tooYR
a
'a I .
A a Q A
,A ... a. - -
A .. a
CONCRETE a { SOLIDS HANDLING
a PLATFORM a A ' A I BUILDING
A _ Aa a'
a�
f.
a ,. -.'a A A -
A a A. A -
A a
A
—77
f---// /�/------- - - - - - - - - - - - - - - --
- --
\\\ /� ASPHALT PAVEMENT �14
Hazen
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 50
RALEIGH, NORTH CAROLINA 27607
LICENSE NO.: C-0381
NOTES:
1. CONTRACTOR SHALL FILL LINES WITH FLOWABLE
FILL TO EXTENT POSSIBLE PRIOR TO
INSTALLATION OF CAPS. FLOWABLE FILL SHALL BE
PROVIDED IN LINES WHICH REMAIN UNDER
ROADWAYS OR OTHER AREAS WHERE COLLAPSE
OF LINE WILL IMPACT PLANT OPERATIONS.
----- —�— ------------------------
I
04
1 r �--
�L_____ ___________ }
-------------------n j
_ I
100
I
I
4W 100YR
IIII1 �I � 'I I
I
III
IIII I I I I I
I
IIII IIII I I I
�IIuI II IIII I I I
RIB--------------------------�� I I I I
III IIII I I
IL--------------------------� II I I
II� �Q��•. j I I
PLAN
SCALE: 1" = 20'
RIVANNA WATER & SEWER AUTHORITY
CHARLOTTESVILLE, VIRGINA
MOORES CREEK ADVANCED WATER RESOURCE
o RECOVERY FACILITY
IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
SITE
CIVIL
FINAL YARD PIPING PLAN
TERTIARY
FILTERS
BACKWASH WASTE I
RECLAIM BASIN
20 10 0 20'
SCALE: 1" = 20'
DATE: J U N E 2021
HAZEN NO.: 31442-008
CONTRACT NO.: 1
DRAWING
NUMBER:
Li
Virginia Runoff Reduction Method Worasheet
NOTES:
a:
DEQVlrglnla Runoff Reducdon Method Rai -Development Compliance Spreadsheet - Version 3.0
aMP Design SpeclJicodons list: 2013 Draft Stds & Specs
Site Summary
Project Title: MCAW RRF IN -PLANT CLARIFIER AND LIME SILO DEMOLITION
Date: 44308 Total Rainfall (in): 43
Total Disturbed Acreage: 1.32
Site Land Cover Summary
Pre-ReDevelopment Land Cover (acresl
Asolls
Bsolls
CSolls
DSolls
Totals
%of Total
Forest/Open(acres)
0.00
0.00
0.00
0.00
0.00
0
Managed Turt (acres)1
0.00
1.03
0.00
0.00
1.03
78
Impervious Cover (acres)
1 0.00
0.29
0.00
0.00
0.29
22
1.32
100
Post-ReDevelopment Land Cover (acres)
Asoils
Bsolls
CSolls
DSoils
Totals
%of Total
Forest/Open(acres)
0.00
0.00
0.1
0.00
0.00
0
Managed Turf (acres)
0.00
1 1.18
0.00
0.00
1.18
89
Impervious Cover (acres)
0.00
0.14
0.00
0.00
0.14
21
1.32
100
Site Tv and Land Cover Nutrient Loads
Final Post -Development
Post-
Adjusted Pre-
(Post-ReDevelopment
Post-ReDevelopment
ReDevelopment
Development
ReDevelopment
& New Impervious)
p )
(New Impervious)
Site Rv
0.28
0.28
--
0.36
Treatment Volume(ff)
1,339
1,339
--
1,748
TP Load (lb/yr)
0.84
0.84
-
1.10
Total TP Load Reduction Required (lb/yr) -0.04 -0.04 0
Final Post -Development Load
(Post-ReDevelopment & New Impervious)
Pre-
ReDevelopment
TN Load (lb/yr) 1
6.02
7.86
----------------------------------------------------------------------------------------
Site Compliance Summary
Maximum% Reduction Required Below 20%
Pre-ReDevelopment Load
Total Runoff Volume Reduction (ft)
0
Total TP Load Reduction Achieved(lb/yr)
0.00
Total TN Load Reduction Achieved (lb/yr)
0.00
Remaining Post Development TP Load
(lb/yr)
0.84
Remaining TP Load Reduction (lb/yrl
Required
0.00
" TARGET TP REDUCTION EXCEEDED BY 0.04 LB/YEAR •a
--------------------------------------------------------------------------------------
Drainage Area Summary
D.A. A
D.A. B
D.A. C
DA. D
DA. E
Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
1 0.00
Managed Turf (acres)
0.23
0.49
0.41
0.05
0.00
1 1.28
Impervious Cover (acres)
0.01
0.02
0.11
0.00
0.00
0.14
Total Area (acres)
0.24
0.51
OS2
0.05
0.00
1.31
Drainage Area Compliance Summary
DA. A
D.A. B
D.A. C
DA. D
DA. E
Total
TP Load Reduced tlblwl
1 0.00
1 0.00
0.00
1 0.00
0.00
1 0.00
TN Load Reduced (lb/yr)
1 0.00
1 0.00
0.00
1 0.00
0.00
1 0.00
Pre
Final Post -Development
Post-ReDevelopment TP
ReDevelopment
TP Load per acre
Load per acre
TP Wad per acre
(lb/acre/yr)
(lb/acre/yr)
h acre r
0.83
0.64
0.64
_-----------------_-._.-------------------_.-_--_-._-._.._.-_--_-._.----_ --_-._.-_--_-._.----
Runoff Volume and CN Calculations
arstorm z-yearstorm 10-year sl
3.03 3.66 5.54
Drainage Areas
RV&CN
Drainage Arl
Drainage AreaB
Drainage AreaC
Drainage Area
Drainage Am
CN
62
62
69
61
0
RR (ft)
0
0
0
0
0
1-year return period
Be wo RR(.4n)
0.41
0.41
0.69
0.38
0.00
RV w Rut (.-in)
0.41
0.41
0.69
0.38
0.00
(yadju,ned
62
62
69
61
0
2-year return period
RVwo Rith,e4n)
0.69
0.69
1.05
0.0
0.00
RV RR Iwo-Inl
0.69
0.69
1.05
0.65
0.00
Ulad)usted
62
62
69
fil
0
10-year return period
RVwo RR(ws-In)
1.78
1.78
2.36
1.70
0.00
RV w RR(ws-Inl
1.]8
1.78
2.36
1.M
0.W
CNadjusted
62
62
69
61
0
NALT
SCALE: 1" = 50'
LEGEND
® IMPERVIOUS AREA (EXISTING)
® IMPERVIOUS AREA (REMOVED)
OPEN SPACE
DIRECTION OF SURFACE FLOW
SCALE: 1" = 50'
1 1 /
PROJECT
ENGINEER: B. PORTER
ISSUED FOR
CONSTRUCTION
HazeCHARLOTTESVILLE,
_
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 500
RALEIGH, NORTH CAROLINA27607
LICENSE NO.: C-0381
RIVANNA WATER & SEWER AUTHORITY
VIRGINA
SITE
CIVIL
STORMWATER CALCULATIONS - VRRM
DATE:
DESIGNED BY: A. MARCH
HAZENNO.: 31442-008
DRAWN BY: A. MARCH
CONTRACT NO.: 1
MOORES CREEK ADVANCED WATER RESOURCE
RECOVERY FACILITY
IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
CHECKED BY: B. EDWARDS
NDRAWING
UMBER:
C16
IF THIS BAR DOES NOT 0 1/2" ill
MEASURE 1 "THEN DRAWING
IS NOT TO FULL SCALE
1
LREV
CONSTRUCTION
06/2021
BYP
ISSUED FOR
DATE
BY
PRE -DEVELOPMENT: DA-1
=114a]a19mlts]ilddml Ykm Ld
1
REV
COVER DESCRIPTION
HSG
CN
Area
CN x Area
IMPERVIOUS
A
98
0.00
0.0
B
98
0.01
1.0
LAWN
A
39
0.00
0.0
B
61
0.23
14.0
TOTALS
0.2
15
COMPOSITE CN
63
TIME OF CONCENTRATION, tc (HOURS)
STORM FREQUENCY (YR)
RAINFALL (IN)
RUNOFF,Q
PEAK FLOW (CFS)
2 10
3.66
5.54
0.72
1.82
0.1
0.4
POST -DEVELOPMENT: DA-1
0.04
COVER DESCRIPTION
HSG
CN
Area
CN x Area
IMPERVIOUS
A
98
0.00
0.0
B
98
0.01
0.5
LAWN
A
39
0.00
0.0
B
61
0.24
14.6
TOTALS
0.2
15
COMPOSITE CN
62
TIME OF CONCENTRATION, t. (HOURS)
STORM FREQUENCY (YR)
RAINFALL (IN)
RUNOFF,Q
PEAK FLOW (CFS)
2 10
3.66
5.54
0.68
1.76
0.1
0.4
PRE -DEVELOPMENT: DA-3
m
COVER DESCRIPTION
HSG
CN
Area
CN x Area
IMPERVIOUS
A
98
0.00
0.0
B
98
0.41
40.2
LAWN
A
39
0.00
0.0
B
61
0.70
42.7
TOTALS
1.1
83
COMPOSITE CN
75
TIME OF CONCENTRATION, t. (HOURS)
STORM FREQUENCY (YR)
RAINFALL (IN)
RUNOFF, Q
PEAK FLOW (CFS)
2
10
3.66
5.54
1.39
2.86
0.9
1.9
POST -DEVELOPMENT: DA-3
COVER DESCRIPTION
HSG
CN
Area
CN x Area
IMPERVIOUS
A
98
0.00
0.0
B
98
0.30
29.4
LAWN
A
39
0.00
0.0
B
61
0.81
49.4
TOTALS
1.1
79
COMPOSITE CN
71
TIME OF CONCENTRATION, t. (HOURS)
STORM FREQUENCY (YR)
RAINFALL (IN)
RUNOFF, Q
PEAK FLOW (CFS)
2
10
3.66
5.54
1.17
2.53
0.7
1.6
PROJECT
ENGINEER:
DESIGNED BY:
DRAWN BY:
CHECKED BY:
IF THIS BAR DOES NOT
CONSTRUCTION 06/2021 BYP MEASURE 1" THEN DRAWING
ISSUED FOR DATE BY IS NOT TO FULL SCALE
COVER DESCRIPTION
HSG
CN
Area
CN x Area
IMPERVIOUS
A
98
0.00
0.0
B
98
0.32
31.4
LAWN
A
39
0.00
0.0
B
61
0.39
23.8
TOTALS
0.7
55
COMPOSITE CN
78
TIME OF CONCENTRATION, t, (HOURS)
STORM FREQUENCY (YR)
RAINFALL (IN)
RUNOFF, Q
PEAK FLOW (CFS)
2 10
3.66
5.54
1.60
3.14
1.0
2.1
POST -DEVELOPMENT: DA-2
0.04
COVER DESCRIPTION
HSG
CN
Area
CN x Area
IMPERVIOUS
A
98
0.00
0.0
B
98
0.17
16.7
LAWN
A
39
0.00
0.0
B
61
0.54
32.9
TOTALS
0.7
50
COMPOSITE CN
70
TIME OF CONCENTRATION, L, (HOURS)
STORM FREQUENCY (YR)
RAINFALL (IN)
RUNOFF,Q
PEAK FLOW (CFS)
2 10
3.66
5.54
1.10
2.43
0.6
1.5
PRE-DEVELOPMENT: DA-4
m
COVER DESCRIPTION
HSG
CN
Area
CN x Area
IMPERVIOUS
A
98
0.00
0.0
B
98
0.05
4.9
LAWN
A
39
0.00
0.0
B
61
0.41
25.0
TOTALS
0.5
30
COMPOSITE CN
I65
TIME OF CONCENTRATION, tc (HOURS)
STORM FREQUENCY (YR)
RAINFALL (IN)
RUNOFF,Q
PEAK FLOW (CFS)
2 10
3.66
5.54
0.84
2.02
0.2
0.5
POST -DEVELOPMENT: DA-4
COVER DESCRIPTION
HSG
CN
Area
CN x Area
IMPERVIOUS
A
98
0.00
0.0
B
98
0.05
4.9
LAWN
A
39
0.00
0.0
B
61
0.41
25.0
TOTALS
0.5
30
COMPOSITE CN
65
TIME OF CONCENTRATION, t, (HOURS)
STORM FREQUENCY (YR)
RAINFALL (IN)
RUNOFF, Q
PEAK FLOW (CFS)
B. PORTER
A. MARCH
A. MARCH
B. EDWARDS
0 1/2" 1"
2 10
3.66
5.54
0.84
2.02
0.2
0.5
ISSUED FOR
CONSTRUCTION
M
Hazen
PLAN
SCALE: 1" = 50'
RIVANNA WATER & SEWER AUTHORITY
CHARLOTTESVILLE, VIRGINA
HAZEN AND SAWYER MOORES CREEK ADVANCED WATER RESOURCE
4011 WESTCHASE BOULEVARD, SUITE 500 RECOVERY FACILITY
RALEIGH, NORTH CAROLINA27607 IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
LICENSE NO.: C-0381
LEGEND
IMPERVIOUS AREA (EXISTING)
IMPERVIOUS AREA (REMOVED)
OPEN SPACE
DIRECTION OF SURFACE FLOW
SCALE: 1" = 50,
SITE
CIVIL
STORMWATER CALCULATIONS - PEAK FLOWS
oarE: JUNE 2021
HAZEN NO.: 31442-008
CONTRACT NO.: 1
DRAWING
NUMBER:
C17
1992 3.02
STONE CONSTRUCTION ENTRANCE
70' MIN. EXISTBIG
GROUND
RE.n. ue�w w.uauc ......�. ... ..•..
] MIN.
0 .,.oUo..w 10, MIN.
SECTION A —A
SECTION B—B
Source: Adapted from 1983 Maryland Standards for Soil
Erosion and Sediment Control, and Va. DSWC
III - 9
BERM
Plate 3.02-1
1992 3,07
Source: Va. DSWC
III - 36
Plate 3.07-2
1992 3.05
CONSTRUCTION OF A SILT FENCE
(WITH WIRE SUPPORT)
1. SET POSTS AND EXCAVATE A rXr 2. STAPLE WIRE FENCING TO THE POSTS.
TRENCH UPSLOPE ALONG THE LINE
OF POSTS.
� I f
FLOW III
3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE
FENCE AND EXTEND R INTO THE TRENCH. EXCAVATED SOIL
FLO
W
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
FILTER
FABRIC
III IliWI
RE
ffrJR
I
Source: Adapted from Installation of Straw and Fabric Filter
Barriers for Sediment Control, Sherwood and Wyant
III - 24
Plate 3.05-1
1992 3.07
GRAVEL CURB INLET SEDIMENT
FILTER
1 /
GRAVEL FILTER
� T�¢at�
r4*
° -••N1, _
llllliu���� S+.i�L! -
-
' _ _IIII��IIII� IIII�
1
THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS
WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE
INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED
AREAS.
' GRAVEL SHALL BE VDOT g3, #357 OR 5 COARSE AGGREGATE.
Source: Va. DSWC
III-41
Plate 3.07-6
T YPI CAL TREA TMENT - 2
SOIL STABILIZATION MATTING
SLOPE INSTALLATION
FILL SLOPE SECTION
SOIL STABILIZATION MATS SHOULD /
BE INSTALLED VERTICALLY
DOWNSLOPE FOR BEST RESULTS.
TOE
MAINTAIN SLOPE ANGLE
SLOPE LINING
(WET SLOPE
TREATMENT - 2
POLYPROPELYENE
NON -WOVEN
(NEEDLE PUNCHED)
GEOTEXTILE FILTER Ftl R C
CLOTH (BEHIND 4'TP 0`1
TREATMENT - 2) r 0
SOIL Ag�E
BOTTOM OF CUT SLOPE
5'
r�
OTE: SLOPE SURFACE
SHALL BE SMOOTH
AND FREE OF
ROCKS, LUMPS OF
DIRT, GRASS AND
STICKS. MAT SHALL
BE PLACED FLAT
ON SURFACE FOR
PROPER SOIL
CONTACT.
f 2
DIRT SHALL BE
TAMPERED PRIOR
TO LAYING TOP
LAP OVER
BERM
TRENCH INTO BERM AND
PROGRESS DOWNSLOPE
SLOPE LINING TOP OF
CUT. SLOPE
(DRY SLOPE)OF
TREATMENT - 2
BOTTOM OF FILL SLOPE
BOTTOM OF CUT SLOPE
SOURCE: VDOT ROAD AND BRIDGE STANDARDS
DETAIL 1
SCALE: N.T.S. CD1
21
- OR SHOULDER
BREAK POINT
PLATE: 3.36-5
PROJECT
ENGINEER: B. PORTER
ISSUED FOR
CONSTRUCTION
HazeCHARLOTTESVILLE,
_
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 500
RALEIGH, NORTH CAROLINA27607
LICENSE NO.: C-0381
RIVANNA WATER & SEWER AUTHORITY
VIRGINA
DETAILS
CIVIL
EROSION AND SEDIMENT CONTROL DETAILS
DATE:
DESIGNED BY: A. MARCH
HAZENNo.: 31442-008
DRAWN BY: A. MARCH
CONTRACT NO.: 1
MOORES CREEK ADVANCED WATER RESOURCE
RECOVERY FACILITY
IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
CHECKED BY: B. EDWARDS
NDRAWING
UMBER:
CD1
FTHISBARDOESNOT o 1 2..
MEASURE 1" THEN DRAWING
IS NOT TO FULL SCALE
1
CONSTRUCTION
06/2021
BYP
REV
ISSUED FOR
DATE
BY
NOTES:
1. CONTRACTOR SHALL REFERENCE SPECIFICATIONS
FOR SUBGRADE PREPARATION REQUIREMENTS.
V
X
T
cs
W
COMPACTED
BACKFILL
SELECT BACKFILL
MATERIAL (NO
MATERIAL LARGER
THAN 2")
TYPE A
IN EARTH
C-01-0100
in
TYPE A
IN ROCK
C-01-0101
CTED BACKFILL
ROCK
BACKFILL
AL OR CRUSHED
1/8 PIPE OD BELOW
IN 6") AND MIN OF
R TOP OF PIPE
la
FINISHED GRADE
W
TYPE B
C-01-0102
SLOPE VARIES
11" #4 NOSING BAR, TYP
1" 9" WIDE SIDEWALLS CUT EXISTING SURFACE COURSE
COMPACTED 11" TREAD
BACKFILL SIDEWALK "v w 244 IN SIDEWALLS
cl) ASPHALT SURFACE
2-#4 DOWELS @ COURSE, 2" MIN
18" OC IN SIDEWALLS TACK COAT
z
SELECT BACKFILL #4 BARS TO EXTEND ti v
MATERIAL (NO INTO SIDEWALLS, P SIDEWALK N
MATERIAL LARGER SPACED AT 12" OC
THAN 2")
#4 BARS @ 12"
12"
NOTE:
CRUSHED STONE - 1/8 YARD STEPS HAVING MORE THAN THREE RISERS
PIPE OD BELOW PIPE SHALL HAVE HANDRAILS IN THE SIDEWALLS. THE
(MIN 6") AND UP TO WIDTH OF THE YARD STEPS TREAD SHALL BE THE
PIPE MIDPOINT SAME AS THE ADJACENT SIDEWALK.
EXISTING SURFACE COURSE;
WHERE VERTICAL DIFFERENCE BETWEEN SIDEWALK REPAIR HOLES, CRACKS, ETC.
ELEVATIONS IS GREATER THAN 12'-0", AN INTERMEDIATE BEFORE APPLYING TACK COAT
LANDING IS REQUIRED, SEE DETAIL AND NEW ASPHALT
FRAME AND GRATE, EAST JORDAN
IRON WORKS V5660, NEENAH
R-1878-137G, OR EQUAL
CONCRETE YARD STEPS
C-32-0521
BACK OF CURB
EXIST BASE COURSE
2" MILL AND OVERLAY OF EXISTING
PAVEMENT
C-32-0555R
12"
2,-6„
X\
FINISHED
MIN
GRADE
6„
CONCRETE CURB
#4 BARS CONTINUOUS WITH
Z
g
AN D GUTTER
ASPHALT
18" LAP AT CORNERS
N
PAVEMENT-
1 1/2"
SLOPE
TYPICAL CONTRACTION JOINT
CLASS A CONCRETE
co
)v
48' MAX SPACING BETWEEN
0
1/2" EXPANSION JOINTS
41
8" CONCRETE BLOCK
OR BRICK WALL
fO
�O %0 Q
#4 DOWELS
��
4" THICK CONCRETE WALK
@ 16" OC7
w
0
PIPE SIZE VARIES
FILL WITH
VARIES, SEE
NON -SHRINK
CONCRETE
Rz
PLAN FOR
WIDTH
GROUT
1'-6'MIN
1/2" EXPANSION JOINT MATL
WHEN WIDTH OF SIDEWALK, PAD, ETC
NOTES:
REQUIRED WHEN WALK ABUTS
EXCEEDS 6', LONGITUDINAL CONTRACTION
PIPE JOINT
24"
1. CONTRACTION JOINTS SHALL BE PLACED AT 10 FOOT INTERVALS, OR 15
RIGID STRUCTURES
JOINTS SHALL BE PLACED AS REQUIRED
MAX
FOOT INTERVALS WHEN A MACHINE IS USED TO PLACE THE CURB.
2. EXPANSION JOINTS SHALL BE PLACED AT 90 FOOT INTERVALS AND
„
ADJACENT TO ALL RIGID OBJECTS.
TYPICAL CONCRETE
WALKWAY
VT'yP
CURB AND GUTTER
C-32-0520
BEND AS NECESSARY
"
co
C-32-0530
TO CLEAR PIPE
PROJECT
ENGINEER: B. PORTER
DESIGNED BY: A. MARCH
DRAWN BY: A. MARCH
CHECKED BY: B. EDWARDS
IF THIS BAR DOES NOT 0 1/2" 1"
1 CONSTRUCTION 06/2021 BYP MEASURE 1" THEN DRAWING
REV ISSUED FOR DATE BY IS NOT TO FULL SCALE
ISSUED FOR
CONSTRUCTION
CLASS A CONCRETE
FLOOR SLAB
GROUT CATCH BASIN
INVERT TO ELEV OF
EFFLUENT PIPE INVERT
Hazen
a
'�--#4@12" EW
NOTE:
YARD INLET YARD INLET MAY BE PRECAST
CONCRETE - SEE SPECIFICATIONS
C-22-0302
HAZEN AND SAWYER
4011 WESTCHASE BOULEVARD, SUITE 500
RALEIGH, NORTH CAROLINA 27607
LICENSE NO.: C-0381
RIVANNA WATER & SEWER AUTHORITY
CHARLOTTESVILLE, VIRGINA
MOORES CREEK ADVANCED WATER RESOURCE
RECOVERY FACILITY
IN -PLANT CLARIFIER AND LIME SILO DEMOLTION
DETAILS
CIVIL
STANDARD DETAILS
DATE: JUNE 2021
HAZEN NO.: 31442-008
CONTRACT NO.: 1
CD2