Attachment A- Drawings.pdf

PDF 26 MB Posted Sep 23, 2020

Attached to: W912DR20B0020 Dalecarlia Clearwells Maintenance
Solicitation number: W912DR20B0020
Issued by: Department of the Army Corps of Engineers Engineering District Baltimore

About this file

Written by GovTribe AI · Dec 28, 2023

This solicitation is for the rehabilitation and maintenance of two clearwells and associated infrastructure at the Dalecarlia Water Treatment Plant. The Washington Aqueduct seeks upgrades to drain lines, replacement of large sluice gates, installation of new flow meters and induction mixers, improvements to the clearwell overflow structure, re-routing of chemical analyzer drain pipes, and soil drainage improvements. Mold remediation and HVAC upgrades are also required in a building near the 15 million gallon clearwell. Both clearwells are critical assets for water supply and outages must be coordinated with lower seasonal demand, sequencing work so only one clearwell is out of service at a time. The Department of the Army Corps of Engineers Engineering District Baltimore is the contracting agency.

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Other files

File	Type	Posted
Copy of C.04.01 Abstract of Bids - W912DR20B0020 Page 1.xlsx	XLSX spreadsheet	Oct 23, 2020
Abstract of Bids - W912DR20B0020 Page 2.pdf	PDF	Oct 23, 2020
W912DR20B0020 amendment 3.pdf	PDF	Oct 21, 2020
Amendment No. 0002 08Oct2020SiteVisit.pdf	PDF	Oct 16, 2020
Amendment No. 0002 RFI Questions and Answers.pdf	PDF	Oct 16, 2020
W912DR20B0020 A0002.pdf	PDF	Oct 16, 2020
Amendment No. 0002 Continuation page.pdf	PDF	Oct 16, 2020
01Oct2020SiteVisit.pdf	PDF	Oct 5, 2020
Amendment No. 0001.pdf	PDF	Oct 5, 2020
W912DR20B0020 amendment 1.pdf	PDF	Oct 5, 2020
W912DR20B0020.pdf	PDF	Sep 24, 2020
Attachment B - Specifications.pdf	PDF	Sep 23, 2020
Attachment E - Certificate of Corporate Authority Form.PDF	PDF	Sep 23, 2020
Attachment C - Standard Form LLL.PDF	PDF	Sep 23, 2020
Attachment D- EFT FORM.PDF	PDF	Sep 23, 2020
W912DR20B0020.pdf	PDF	Sep 23, 2020

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VICINITY MAP

CONDITION IS SHOWN

SHEET ON WHICH THE

CONDITION IS DRAWN

OR SECTION OF THE

SHEET ON WHICH DETAIL

IDENTIFICATION NUMBER

DETAIL OR SECTION

DETAIL SYMBOLS

WASHINGTON AQUEDUCT

DALECARLIA WATER

TREATMENT PLANT

McMILLAN WATER

TREATMENT PLANT

LOCATION MAP

DALECARLIA WATER TREATMENT PLANT

WASHINGTON AQUEDUCT DIVISION NAME:

WASHINGTON AQUEDUCT

DALECARLIA WATER TREATMENT PLANT, WASHINGTON, DC

CLEARWELLS MAINTENANCE & IMPROVEMENTS

A B B R E V I A T I O N S

ACB

ACST

ADJ

ALTN

APPROX

ARCH

ARR

ASPH

AWG

ASBESTOS CEMENT, ALTERNATING CURRENT

AIR CIRCUIT BREAKER

ACOUSTIC

AREA DRAIN

ADJUSTABLE, ADJACENT

ALUMINUM

ALTERNATE

ACCESS PANEL

APPROXIMATE

ARCHITECTURAL

ARRESTER

ASPHALT

AMERICAN WIRE GAGE

ANCHOR BOLT

A, AMP

BARR

BITUM

BLDG

BLK

BSMT

BTU

BASE

BARRIER

BOARD

BITUMINOUS

BASELINE

BUILDING

BLOCK

BEAM, BENCH MARK

BASEMENT

BRITISH THERMAL UNIT

CAP

C TO C

CEM

CFM

CIP

CIR

CKT

CELSIUS

CAPACITY

CENTER TO CENTER

CEMENT

CUBIC FEET PER MINUTE

CAST IRON

CAST IRON PIPE

CIRCULATING

CONTROL JOINT

CIRCUIT

CLG

CMP

CND

CLEAR, CLEARANCE, CENTERLINE

CEILING

CORRUGATED METAL PIPE

CONDUIT

CLEANOUT

CRS

CSK

CTR

CWB

CAST STEEL, CAST STONE, CARBON STEEL

COLD-ROLLED STEEL

COUNTERSINK

CERAMIC TILE, CURRENT TRANSFORMER

CENTER

COLD WATER

CAPILLARY WATER BARRIER

DBL

DET

DIA

DIM

DPNL

DWG

DEEP, DEGREE

DRY BULB, DECIBEL, DIRECT BURIAL

DOUBLE

DETAIL

DIAMETER

DIMENSION

DEAD LOAD

DOWN

DITTO

DISTRIBUTION PANEL

DOWNSPOUT

DRAWING

ELEC

EMER

EMT

EQL

EQPT

EWC

EXST

EXP

EXPJT

EXT

EAST

EACH

EMPTY CONDUIT

EACH FACE

ELEVATION

ELECTRIC

EMERGENCY

ELECTRICAL METALLIC TUBING

EQUAL

EQUIPMENT

EACH WAY

ELECTRIC WATER COOLER

EXISTING

EXPANSION, EXPOSED

EXPANSION JOINT

EXTERIOR

FTG

FOOT, FEET

FOOTING, FITTING

GALV

GOVT

GPM

GND

GYP

GAGE

GALVANIZED

GLASS

GOVERNMENT

GALLONS PER MINUTE

GRADE

GROUND

GROUND WATER

GYPSUM

HDW

HGT

HORIZ

HWL

HIGH, HATCH

HEAVY DUTY, HARD

HARDWARE

HEIGHT

HORIZONTAL

HORSEPOWER, HIGH PRESSURE

HOUR

HOT WATER, HEADWALL

HIGH WATER LEVEL

HERTZ

INL

INLET

INSIDE DIAMETER, INSIDE DIMENSION

INCH

LVR

LOUVER

MACH

MSNRY

MATL

MAX

MECH

MET

MIN

MISC

MON

MPH

MTD

MTG

MWP

MACHINE

MASONRY

MATERIAL

MAXIMUM

MECHANICAL

METAL

MANHOLE

MINIMUM

MISCELLANEOUS

MASONRY OPENING, MOTOR OPERATED

MEDIUM PRESSURE

MILES PER HOUR

MOUNTED

MOUNTING

MEMBRANE WATERPROOFING

PVC POLYVINYL CHLORIDE

POINT OF VERTICAL INTERSECTION

RAD

RCP

RCPT

RADIUS, RISER, RUBBER SHEATH

RADIUS, RADIO

REINFORCED CONCRETE PIPE

RECEPTACLE

TAN

TANGENT

TOP AND BOTTOM, TILE BASE

TOP OF CURB, TOP CHORD, TERRA COTTA

TEL

TEMP

TERM

3/C

3/P

3WAY

THK

THR

THRU

TYP

TELEPHONE

TEMPORARY, TEMPERATURE

TERMINAL

TOP OF FOOTING, TILE FLOOR

THREE CONDUCTOR

THREE POLE

THREE WAY

THICK

THRESHOLD, THRUST

THROUGH

TEST POINT

TOP OF STEEL, TOP OF SLAB

TOP OF WALL, TILE WAINSCOT

TYPICAL

UGND

UNO

UNDERGROUND

UNLESS NOTED OTHERWISE

VAC

VAR

VCP

VEH

VERT

VEST

VOL

VOLT, VALVE

VACUUM

VARIOUS, VARIABLE, VARIES

VALVE BOX

VARNISH CAMBRIC, VITRIFIED CLAY

VITRIFIED CLAY PIPE

VEHICLE

VERTICAL

VESTIBULE

VOLUME

W/O

WWM

WIDE, WASTE, WATT, WEST

WITH

WITHOUT

WET BULB, WOOD BASE, WIDE BAND

WATER CLOSET

WIDTH, WINDOW DIMENSION, WOOD DOOR

WATER LINE, WAVELENGTH, WORK LINE

WEATHERPROOF, WASTE PIPE

WASTE STACK, WATER SURFACE, WATERSTOP

WEIGHT

WELDED WIRE MESH

XFMR

X-STR

TRANSFORMER

EXTRA-STRENGTH

2:1 SLOPE 2 HORIZONTAL TO 1 VERTICAL

1 ON 2

1 VERTICAL ON 2 HORIZONTAL SLOPE

DEFLECTION ANGLE

QT QUARRY TILE, QUART

CONDITION IS SHOWN

SHEET ON WHICH THE

CONDITION IS DRAWN

OR SECTION OF THE

SHEET ON WHICH DETAIL

IDENTIFICATION NUMBER

DETAIL OR SECTION

DETAIL SYMBOLS

EXISTING MATERIAL

EXISTING CONCRETE

WOOD FINISH

WOOD IN SECTION

METAL IN SECTION

PLAS. CEM. & GROUT

MATERIALS

CONCRETE

GSU & CT

C M U/DEMOLTION

BRICK

ROCK

EARTH

ADH ADHESIVE

ASB ASBESTOS

CATCH BASIN

CONCRETE MASONRY UNITSCMU

CUBIC

DR DRAIN, DRIVE, DRILL

GUT GUTTER

HPT

HIGH POINT

HNDRL HANDRAIL

MEMB

MEMBRANE

MONUMENT

QTY QUANTITY

UPR UPPER

UV ULTRAVIOLET

VEL VELOCITY

WTR WATER

YEARYR

YD YARD

PVI

BC BOTTOM OF CURB, BOTTOM CHORD

AMPERE

INDEX OF DRAWINGS

MILLION GALLON

PLATE

NO.

TITLE

DRAWING

NO.

SHEET

NO.

GENERAL

VICINITY AND LOCATION MAP, INDEX AND ABBREVIATIONS

40.34-01-G-000 G-000

2 GENERAL NOTES & SYMBOLS LEGEND 40.34-01-G-001 G-001

CIVIL

3 OVERALL SITE PLAN 40.34-01-C-101 C-101

4 30 MG CLEARWELL GRADING PLAN 40.34-01-C-102 C-102

5 15 MG CLEARWELL GRADING PLAN 40.34-01-C-103 C-103

6 CIVIL DETAILS 40.34-01-C-104 C-104

7 EROSION CONTROL PLAN COVER 40.34-01-CE-101 CE-101

8 EROSION CONTROL PLAN MARYLAND NOTES 40.34-01-CE-102 CE-102

9 EROSION CONTROL PLAN DISTRICT OF COLUMBIA NOTES 40.34-01-CE-103 CE-103

10 30 MG CLEARWELL EROSION CONTROL PLAN PHASE 1 40.34-01-CE-104 CE-104

11 30 MG CLEARWELL EROSION CONTROL PLAN PHASE 2 40.34-01-CE-105 CE-105

12 30 MG CLEARWELL EROSION CONTROL PLAN PHASE 3 40.34-01-CE-106 CE-106

13 15 MG CLEARWELL EROSION CONTROL PLAN PHASE 1 40.34-01-CE-107 CE-107

14 15 MG CLEARWELL EROSION CONTROL PLAN PHASE 2 40.34-01-CE-108 CE-108

15 15 MG CLEARWELL EROSION CONTROL PLAN PHASE 3 40.34-01-CE-109 CE-109

16 EROSION CONTROL DETAILS 40.34-01-CE-110 CE-110

17 EROSION CONTROL DETAILS 40.34-01-CE-111 CE-111

PROCESS

18 CLEARWELLS - GATE PLAN 40.34-01-M-101 M-101

19 15 MG CLEARWELL DRAINAGE CHAMBER DEMOLITION SECTION 40.34-01-M-102 M-102

20 15 MG CLEARWELL DRAINAGE CHAMBER MODIFICATIONS 40.34-01-M-103 M-103

21 30 MG CLEARWELL DRAINAGE CHAMBER ENLARGED PLANS 40.34-01-M-104 M-104

22 30 MG CLEARWELL DRAINAGE CHAMBER SECTIONS 40.34-01-M-105 M-105

23 30 MG CLEARWELL MIXING CHAMBER DEMOLITION PLANS 40.34-01-M-106 M-106

PLATE

NO.

TITLE

DRAWING

NO.

SHEET

NO.

24 30 MG CLEARWELL MIXING CHAMBER ENLARGED PLANS 40.34-01-M-107 M-107

25 30 MG CLEARWELL MIXING CHAMBER SECTIONS 40.34-01-M-108 M-108

26 VENTURI VAULT FLOW METER ENLARGED PLANS & SECTIONS 40.34-01-M-109 M-109

27 VENTURI VAULT FLOW METER SECTIONS 40.34-01-M-110 M-110

28 GATE HOUSE DEMO - PLAN AND SECTIONS 40.34-01-M-111 M-111

29 GATE HOUSE NEW - PLAN AND SECTIONS 40.34-01-M-112 M-112

30 SAMPLE DRAIN TO DALECARLIA PUMP STATION 40.34-01-M-113 M-113

31 SLUICE GATE REHABILITATION SUMMARY 40.34-01-M-201 M-201

32 DETAILS 40.34-01-M-901 M-901

STRUCTURAL

33 STRUCTURAL GENERAL NOTES 40.34-01-S-001 S-001

34 STRUCTURAL GENERAL NOTES 40.34-01-S-002 S-002

35 15 MG CLEARWELL DRAINAGE CHAMBER PLANS & SECTIONS 40.34-01-S-101 S-101

36 15 MG CLEARWELL DRAINAGE CHAMBER DETAILS 40.34-01-S-102 S-102

37 15 MG CLEARWELL NEW OUTLET GATE PLANS 40.34-01-S-103 S-103

38 15 MG CLEARWELL NEW OUTLET GATE SECTIONS AND DETAILS 40.34-01-S-104 S-104

39 15 MG CLEARWELL NEW OUTLET GATE SECTIONS AND DETAILS 40.34-01-S-105 S-105

40 30 MG CLEARWELL MIXING CHAMBER VAULT PLANS & SECTIONS 40.34-01-S-111 S-111

41 30 MG DRAINAGE CHAMBER PIPE CONNECTION FOR 36" GATE VALVE 40.34-01-S-112 S-112

30 MG CLEARWELL BAFFLE WALL PLAN, SECTIONS AND DETAILS

40.34-01-S-113 S-113

43 30 MG OVERFLOW STRUCTURE RODENT & INSECT SCREENS 40.34-01-S-114 S-114

44 VISITOR'S CENTER BASEMENT PLAN 40.34-01-S-121 S-121

45 VISITOR'S CENTER BASEMENT SECTIONS AND DETAILS 40.34-01-S-122 S-122

46 STRUCTURAL STANDARD DETAILS 40.34-01-S-901 S-901

47 STRUCTURAL STANDARD DETAILS 40.34-01-S-902 S-902

PLATE

NO.

TITLE

DRAWING

NO.

SHEET

NO.

BUILDING MECHANICAL

VISITOR'S CENTER NOTES, LEGEND AND EQUIPMENT SCHEDULES

40.34-01-H-101 H-101

49 VISITOR'S CENTER BASEMENT PLAN 40.34-01-H-102 H-102

50 HVAC DETAILS 40.34-01-H-501 H-501

ELECTRICAL

51 ELECTRICAL LEGEND AND NOTES 40.34-01-E-001 E-001

52 30 MG CLEARWELL ONE LINE DIAGRAMS 40.34-01-E-101 E-101

53 15 MG CLEARWELL ONE LINE DIAGRAMS 40.34-01-E-102 E-102

54 OVERALL ELECTRICAL SITE PLAN 40.34-01-E-201 E-201

55 30 MG CLEARWELL PARTIAL ELECTRICAL PLAN 40.34-01-E-210 E-210

56 30 MG CLEARWELL GATE HOUSE ELECTRICAL PLAN 40.34-01-E-211 E-211

57 30 MG CLEARWELL MIXING CHAMBER ELECTRICAL PLAN 40.34-01-E-212 E-212

58 VENTURI VAULT ELECTRICAL PLAN 40.34-01-E-213 E-213

59 FINISHED WATER PUMP STATION ELECTRICAL PLAN 40.34-01-E-214 E-214

60 15 MG CLEARWELL PARTIAL ELECTRICAL PLAN 40.34-01-E-220 E-220

61 15 MG CLEARWELL DRAINAGE CHAMBER ELECTRICAL PLAN 40.34-01-E-221 E-221

62 VISITOR'S CENTER BASEMENT ELECTRICAL PLAN 40.34-01-E-222 E-222

63 CHEMICAL BUILDING FIRST FLOOR ELECTRICAL PLAN 40.34-01-E-223 E-223

64 CHEMICAL BUILDING SECOND FLOOR ELECTRICAL PLAN 40.34-01-E-224 E-224

65 30 MG GATE HOUSE EQUIPMENT SCHEMATIC DIAGRAMS 40.34-01-E-301 E-301

66 30 MG CLEARWELL MIXING CHAMBER EQUIPMENT SCHEMATIC DIAGRAM 40.34-01-E-302 E-302

67 VENTURI VAULT FLOW TRANSMITTER SCHEMATIC DIAGRAM 40.34-01-E-303 E-303

68 15 MG CLEARWELL LEAK DETECTION SYSTEM SCHEMATIC DIAGRAMS 40.34-01-E-304 E-304

69 VISITOR'S CENTER DUCT SMOKE DETECTOR SCHEMATIC DIAGRAM 40.34-01-E-305 E-305

70 ELECTRICAL INSTALLATION DETAILS 40.34-01-E-901 E-901

COL

CONC

COND

CONN

CONST

CONT

CONTR

CONV

COLUMN

CONCRETE

CONDITION, CONDUCTOR

CONNECTION

CONSTRUCTION

CONTINUOUS, CONTROL

CONVERTER

CONTRACTION, CONTRACTOR

COP

COPPER

FABX

FDN

FDR

FHY

FHC

FIG

FIN

FLG

FLUOR

4WAY

FPM

FAHRENHEIT, FIRE

FIRE ALARM BOX

FLOOR DRAIN

FOUNDATION

FEEDER

FINISHED FLOOR

FIRE HYDRANT

FIRE HOSE CABINET

FIGURE

FINISH

FLANGE, FLOORING

FLUORESCENT

FOUR WAY

FEET PER MINUTE

FRAME

FULL SIZE, FAR SIDE

FLOOR, FLOOR LINE, FLASHING, FLUSH

INSUL

INTR

INVT

INSULATION, INSULATE

INTERIOR

INVERT

JCT

JKT

JUNCTION BOX

JANITOR CLOSET, JOINT COMPOUND

JUNCTION

JACKET

JOINT

KCP

KVA

KIPS (1000 LBS)

KEENE'S CEMENT PLASTER

KNOCK OUT

KILOVOLT

KILOVOLT-AMPERE

KILOWATT

LAV

LLH

LLV

LAVATORY

POUND

LENGTH OF CHORD, LOW CARBON

LIVE LOAD

LONG LEG HORIZONTAL

LONG LEG VERTICAL

LIGHT

LENGTH

LOW POINT, LOW PRESSURE

NEC

NEUT

NIC

NOM

NTS

NORTH

NECESSARY

NEUTRAL

NOT IN CONTRACT

NUMBER

NOMINAL

NOT TO SCALE

OCB

OPNG

OPP

OVHD

OUTSIDE AIR, OVERALL

ON CENTER

OIL CIRCUIT BREAKER

OUTSIDE DIAMETER

OPENING

OPPOSITE

OVERHEAD

PIV

PLAS

PLYWD

PNL

POV

PRELIM

PRI

PSF

PSI

PILASTER, PITCH

PULL BOX, PUSH BUTTON

POINT OF CURVE, PIECE

PROFILE, POWER FACTOR

POINT OF INTERSECTION

POST INDICATOR VALVE

PLACE, PLATE, PROPERTY LINE

PLASTER

PLYWOOD

PANEL

PRIVATELY OWNED VEHICLE

PRELIMINARY

PRIMARY

PULL SWITCH, POLYSTYRENE

POUNDS PER SQUARE FOOT

POUNDS PER SQUARE INCH

POINT, POINT OF TANGENCY

NEAR SIDE

PREMOLDED EXPANSION JOINTPEJ

PIPE RAILPR

PRMLD PREMOLDED

RDCR

REG

REINF

RELOC

REPL

REQD

REV

RMV

ROOF DRAIN, ROAD

REDUCER

REGULATOR, REGISTER

REINFORCEMENT

RELOCATED

REPLACE

REQUIRED

REVISION

ROOF

ROOF LEADER

ROOM

REMOVE

RIGHT OF WAY

SAN

SCHED

SECT

SERV

1PH

SKCP

SPC

SPDT

SPEC

SPST

SST

STA

STD

STL

STR

SPRT

SUSP

SWBD

SWGR

SOUTH, SECTION MODULUS

SANITARY

SCHEDULE

STORM DRAIN

SECTION

SERVICE

SHEET

SINGLE PHASE

SUSPENDED KEENE'S CEMENT PLASTER

SLOPE, SEA LEVEL

SINGLE POLE

SUSPENDED PLASTER CEILING

SINGLE POLE DOUBLE THROW

SPECIFICATION

SINGLE POLE SINGLE THROW

SQUARE

STAINLESS STEEL

STREAM, SINGLE THROW, STREET

STATION

STANDARD

STEEL

STREAM, STRENGTH, STRAIGHT

SUPPORT

SUSPENDED

SWITCH

SWITCHBOARD

SWITCHGEAR

RPM REVOLUTIONS PER MINUTE

RR REMOVE AND REPLACE, RAILROAD

SEW

SEWER, SEWERAGE

STRL

STRUCTURAL

SYMM

SYMMETRICAL

SUBMITTED:

CHIEF, ENGINEERING & PLANNING BRANCH

CHIEF, WASHINGTON AQUEDUCT DIVISION

APPROVED:

RECOMMENDED:

COLONEL, C. OF E. DISTRICT ENGINEER

APPROVED FOR:

DATE:

REV DATE DESCRIPTION BY

DRAWING NUMBER PLATE

SCALE:

DATE:

CAD BY:

CHECKED BY:

U.S. ARMY ENGINEER DISTRICT, BALTIMORE

CORPS OF ENGINEERS

BALTIMORE, MARYLAND

US Army Corps of Engineers

SHEET:

GENERAL

WASHINGTON AQUEDUCT

DALECARLIA WATER TREATMENT PLANT, WASHINGTON, D.C.

G-000

40.34-01-G-000

JULY 2020AS SHOWN

G.A.

O.G.

S.S.

VICINITY AND LOCATION MAPS,

INDEX AND ABBREVIATIONS

0 07/10/20 ORIGINAL DOCUMENTS, ISSUED FOR CONSTRUCTION O.G.

CLEARWELLS MAINTENANCE AND

IMPROVEMENTS

P:\01 Active Projects\M001-USACE_Baltimore\M001000102-Dalecarlia Clearwells\31 Authoring Cad Files\GENERAL\G-000.dwg, 7/10/2020 10:28:26 AM, ARCH full bleed E1 (30.00 x 42.00 Inches)

This document was originally issued and sealed by George Ajy, DC PE No. 922227, on

07/10/2020. This document shall not be considered a certified document.

REV DATE DESCRIPTION BY

DRAWING NUMBER PLATE

SCALE:

DATE:

CAD BY:

CHECKED BY:

U.S. ARMY ENGINEER DISTRICT, BALTIMORE

CORPS OF ENGINEERS

BALTIMORE, MARYLAND

US Army Corps of Engineers

SHEET:

G-001

40.34-01-G-001

NONE

G.A.

O.G.

S.S

GENERAL

WASHINGTON AQUEDUCT

DALECARLIA WATER TREATMENT PLANT, WASHINGTON, D.C.

GENERAL NOTES & SYMBOLS

LEGEND

CLEARWELLS MAINTENANCE AND

IMPROVEMENTS

MANHOLE

STORM INLET

STORM PIPE - 'U' TYPE ENDWALL

BRIDGE

MATCH LINE

UNDERGROUND CABLE

WATER SERVICE

UNDER GROUND ELECTRIC

PVC PIPING

OVERHEAD ELECTRIC

WS WS

PVC PVC

UNDER GROUND TELEPHONE

SANITARY SEWER LATERAL (SINGLE SERVICE)

SANITARY SEWER LATERAL (DOUBLE SERVICE)

WATER METER (SINGLE SERVICE)

WATER METER (DOUBLE SERVICE)

GATE VALVE

CHECK VALVE

FIRE HYDRANT

F.F. XX.XX

X.00 (EDGE OF PVMT)

X.50 (TOP OF CURB)

SPOT ELEVATION

CONCRETE

EARTH

GRAVEL/RIP-RAP

SAND

DRAINAGE FLOW ARROW (IMPERVIOUS AREA)

DRAINAGE FLOW ARROW (PERVIOUS AREA)

RESIDENTIAL STREET LIGHT

SIGN

AREA TO BE MULCHED

SOD

PROPOSED PAVEMENT

CHAIN LINK FENCE

STORM MANHOLE

PROPOSED OVERLAY

TREE REMOVAL/DEMOLITION

SILT FENCE

AREA TO BE SAW CUT & REMOVED

1. UNDERGROUND UTILITIES ARE SHOWN FOR THE CONVENIENCE OF THE

CONTRACTOR ONLY.

THE CONTRACTOR SHALL COORDINATE WITH WASHINGTON AQUEDUCT

AND SHALL ACCURATELY LOCATE AND UNCOVER ALL EXISTING UTILITIES

BEFORE BEGINNING CONSTRUCTION.

ANY DAMAGE RESULTING FROM THE CONTRACTOR'S OPERATIONS SHALL BE

REPAIRED AT THE CONTRACTOR'S EXPENSE.

WHERE CROSSING OF EXISTING UTILITIES OCCUR, PROVIDE 12" MINIMUM

CLEARANCE EXCEPT WATER MAINS SHALL BE 18".

2. SEWER AND WATER SERVICE SHALL BE MAINTAINED DURING ENTIRE

CONSTRUCTION PERIOD OR TEMPORARY FACILITIES PROVIDED.

3. MINIMUM COVER OVER PIPING SHALL BE 48", BELOW FINISHED GRADE

UNLESS OTHERWISE SHOWN OR SPECIFIED.

4. IF UNSATISFACTORY MATERIAL FOR ADEQUATE BEARING IS

ENCOUNTERED AT THE NORMAL SUBGRADE, THE UNSATISFACTORY

MATERIAL SHALL BE REMOVED AND REPLACED WITH SUITABLE

FOUNDATION STABILIZATION MATERIAL AS SPECIFIED.

5. THE CONTRACTOR SHALL NOT DISTURB AREAS OUTSIDE THE IDENTIFIED

LIMITS OF DISTURBANCE.

6. REFER TO SPECIFICATION 01 14 00, WORK RESTRICTIONS, FOR DETAILED

INFORMATION ON SEQUENCING AND MAXIMUM OUTAGE DURATIONS.

GENERAL NOTES:

CONSTRUCTION NOTES:

1. LAY PIPE TO UNIFORM GRADE BETWEEN INDICATED ELEVATION POINTS.

2. SIZE OF FITTINGS SHOWN ON PLANS SHALL CORRESPOND TO ADJACENT

STRAIGHT RUN OF PIPE, UNLESS OTHERWISE INDICATED. TYPE OF JOINT

AND FITTING MATERIAL SHALL BE THE SAME AS SHOWN FOR ADJACENT

STRAIGHT RUN OF PIPE.

3. LOCATION AND NUMBER OF PIPE HANGERS AND PIPE SUPPORTS SHOWN

IS ONLY APPROXIMATE. FINAL SUPPORT REQUIREMENTS SHALL BE

DETERMINED BY THE CONTRACTOR.

4. ALL JOINTS SHALL BE WATERTIGHT. WALL PIPES SHALL BE USED

WHEREVER PIPING PASSES FROM A STRUCTURE TO BACKFILL.

5. ALL FLEXIBLE CONNECTORS OR FLANGED COUPLING ADAPTERS SHALL BE

PROVIDED WITH THRUST TIES, OR ANCHORS, UNLESS OTHERWISE NOTED.

6. SYMBOLS, LEGENDS, AND PIPE USE IDENTIFICATIONS SHOWN SHALL BE

FOLLOWED THROUGHOUT THE PLANS, WHEREVER APPLICABLE.

NOT ALL OF THE VARIOUS PIPING COMPONENTS ARE NECESSARILY

USED IN THE PROJECT.

1. ALL DIMENSIONS FOR EQUIPMENT PROVIDED IN THIS CONTRACT TO

BE VERIFIED BY CONTRACTOR.

2. REFER TO STRUCTURAL, MECHANICAL, ELECTRICAL AND OTHER DISCIPLINES

OF DRAWINGS FOR ADDITIONAL NOTES.

GENERAL PIPING NOTES:

CIVIL LEGEND

THIS IS A STANDARD SYMBOLS & LEGEND SHEET,

THEREFORE SOME SYMBOLS MAY NOT APPEAR ON

THIS SHEET AND NOT ON THE DRAWINGS.

NOTES:

PROPOSED FINISH

FLOOR ELEVATION

BUILDING

CURB AND GUTTER

EDGE OF PAVEMENT

EXISTING CONTOURS

WASHINGTON AQUEDUCT DIVISION NAME:

O.G.

SUPER SILT FENCESSF

LIMITS OF CLEARWELL

LIMITS OF DISTURBANCE

LOD

STATE BOUNDARY

PROPOSED CONTOURS

PUBLIC TELEPHONE BOOTH

KM ID

TRAFFIC LIGHT BOX

CONCRETE LIGHT POLE

UTILITY POLE

SPOT ELEVATIONS

PROPERTY POINT

WATER MANHOLE

WATER METER

CONTROL STATION

ELECTRIC UTILITY MANHOLE

TELEPHONE MANHOLE

STORM SEWER MANHOLE

CATCH BASINS

SANITARY SEWER MANHOLE

TELEPHONE POLE

CONCRETE POWER POLE

WOODEN POWER POLE

WOODEN LIGHT POLE

STORM SEWER LINE

WATER VALVE

STM

TEL

FIRE HYDRANT

CURB INLET

SANITARY CLEAN OUT

TELEPHONE LINE

POWER LINE

SANITARY SEWER LINE

EXISTING PALM TREE

EXISTING TREE

GUY CABLE

SIGN

CONCRETE GUTTER

TEL/E TELEPHONE/ELECTRIC LINE

B.S. BUS STOP

GAS VALVE

GAS MANHOLE

C.TV

CABLE TV BOX

PROPERTY LINE

CHAIN LINK FENCE WITH CONC. BASE

CENTER LINE

ELECTRIC BOX

METAL FENCE

EXISTING STRUCTURES

WATER EDGE

1. THE HORIZONTAL CONTROL USED ON THIS PLAN ARE MD1900 AND ELEV.

ARE REFERRED TO ORTHOMETRIC HEIGHT (GEOID 2012B).

2. ALL HORIZONTAL MEASUREMENTS ARE IN US FEET UNLESS OTHERWISE

SPECIFIED.

2. COORDINATE SYSTEM WAS ESTABLISHED BY GNSS OBSERVATIONS USING

TRIMBLE DOUBLE FREQUENCY RECEIVERS AND NGS/NOAA OPUS FOR

POST PROCESSING.

4. THE INFORMATION DEPICTED ON THIS PLAN REPRESENTS THE

RESULTS OF THE SURVEY PERFORMED ON THE DATE INDICATED ON C-101.

5. THE INFORMATION PROVIDED ON THIS PLAN SHOW ALL CURRENTLY

EXISTING STRUCTURES, PROPERTIES AND UTILITIES ABOVE OR BELOW

THE GROUND AS REVEALED BY OBSERVABLE EVIDENCE OVER GROUND

INSPECTION.

6. VERTICAL CONTROL IS BASED ON NAVD 88 DATUM. ELEVATIONS WITHIN

EXISTING BUILDINGS USED WAD DATUM. ALL TOPO AND ELEVATIONS

OUTSIDE OF EXISTING BUILDINGS USE NAVD 88. THE DIFFERENCE IN

DATUMS DOES NOT AFFECT THE PROJECT DESIGN. TO CONVERT NAVD

ELEVATIONS TO WASHINGTON AQUEDUCT DATUM SUBTRACT 0.15 FEET.

I.E.: 139.95 (NAVD) - 0.15 = 139.80 (WAD)

SURVEYORS NOTE:

LEGEND

JULY 2020

0 07/10/20 ORIGINAL DOCUMENTS, ISSUED FOR CONSTRUCTION

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This document was originally issued and sealed by George Ajy, DC PE No. 922227, on

07/10/2020. This document shall not be

I N

PARKING AREA

E W

A L K

I D

E W

A L K

I D

CHLORINE

BUILDING

HYPO-

CHLORITE &

CAUSTIC

SODA

FACILITY

SUPER STRUCTURE

GATEHOUSE

DALECARLIA PUMPING

STATION

D-10 PUMP

STA.

D-54

GUARD

GOUSE

AREA

A/C

GATE

DALECARLIA

MAINTENANCE

BUILDING

WAREHOUSE

BUILDING

DALECARLIA

VISITOR CENTER

(OLD PUMP STA.)

DISPATCH

BUILDING

D-51

WASH

WATER

TANK

L B

FILTERS

BUILDING

I T

I L

I N

PLANTING

DALECARLIA

CHEMICAL

BUILDING

PLANTING

GATE

EXHAUST

VENT

EXHAUST

VENT

BRIDGE

SUPPORT

BRIDGE

SUPPORT

ELECTRICAL

TRANSFORMER

ELECTRICAL

TRANSFORMER

ELECTRICAL

TRANSFORMER

ELECTRICAL

TRANSFORMER

ELECTRICAL

TRANSFORMER

POND

GATE

I D

RAIN

METER

PLANTING

PARKING

AREA

P L A

N T

I N

PLANTING

GATE

VALVE

GATE

VALVE

GATE

VALVE

GATE

VALVE

GRAVEL

I N

PULLBOX 8-538

WATER

VALVE

30" WASH WATER

MH 8-471

MH 8-470

GATE VALVE

4-194

FH 8-540A

8-537

8-450

V-8-2-DC

V130

FILTERED WATER

RESERVOIR

I L

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

S T

RAIN

METER

CAMERA POLE

S T

TRAFFIC LIGHT

E L E

C . P

A N

E L

GATE

VALVE 4-250

PULL BOX

CARPENTER

SHOP

AUTOMOTIVE

SHOP

STORE ROOM

GATE

PLANTING

WASHINGTON/MARYLAND

CONCRETE MONUMENT

BOUNDARY LINE

GAS PUMPS

INTERCEPTION

ELEC.

PANEL

GATES

GATE

VALVE

ELEC.

BUILDING D-23

TRAFFIC LIGHT

GATE

VALVE

ELEC. PANEL

ELEC.

UNDERGROUND

HIGH

VOLTAGE MH

EX.BY-PASS

CHAMBER NO. 1

EX.BY-PASS

CHAMBER NO. 2

I N

STM

S T

STAIR

S I D

E W

A L K

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

DALECARLIA

RESERVOIR

I S

WATER

EDGE

M ac A

U R

B O

V A

R D

N W

M ac A

U R

LEVAR

N W

D L

L O

D L

L O

O.G.

M a c

T H

L E

C-101

30 MG CLEARWELL

15 MG

CLEARWELL

OVERFLOW OUTLET

IMPROVEMENTS AND

ACCESS ROAD

30 MG CHEMICAL MIXING

CHAMBER

30 MG CLEARWELL

DRAINAGE CHAMBER

MODIFICATIONS

15 MG CLEARWELL

DRAINAGE CHAMBER

MODIFICATIONS

SEE DRAWING C-102

FOR GRADING PLAN

REV DATE DESCRIPTION BY

DRAWING NUMBER PLATE

SCALE:

DATE:

CAD BY:

CHECKED BY:

U.S. ARMY ENGINEER DISTRICT, BALTIMORE

CORPS OF ENGINEERS

BALTIMORE, MARYLAND

US Army Corps of Engineers

SHEET:

CIVIL

WASHINGTON AQUEDUCT

DALECARLIA WATER TREATMENT PLANT, WASHINGTON, D.C.

40.34-01-C-101

AS SHOWN

G.A.

O.G.

S.S.

OVERALL SITE PLAN

CLEARWELLS MAINTENANCE AND

IMPROVEMENTS

LIMITS OF DISTURBANCE

LIMITS OF 30 MG

CLEARWELL

(NOTE 1)

LIMITS OF 15 MG

CLEARWELL (NOTE 1)

1. ALL CONSTRUCTION EQUIPMENT AND LOADING MUST

NOT EXCEED THE ALLOWED 60 PSF (MAXIMUM) LIVE

LOADING. FOR SPECIFIC CRITERIA OF EACH

CLEARWELL, SEE NOTES ON SHEETS C-102 AND C-103.

2. LIMITS OF DISTURBED AREA:

TOTAL PROJECT DISTURBED AREA = 6.4 ACRES

MARYLAND = 4.6 ACRES

DISTRICT OF COLUMBIA = 1.8 ACRES

3. SEE SPECIFICATION 01 14 00 (WORK RESTRICTIONS)

FOR SEQUENCE OF CONSTRUCTION.

4. CONTRACTOR TO INSTALL REMAINDER OF MEMBRANE

DURING RE-GRADING ACTIVITIES. APPROXIMATE AREA

AND LOCATION SHOWN. LIMIT BOTH MEMBRANE AND

LOD TO EDGE OF CURB, SEE C-103.

5. CONTRACTOR TO COORDINATE VOLUME OF SOIL

ON SITE AND ON STOCKPILE AREA. SOIL WITHIN

STOCKPILE AREA MUST NOT EXCEED 500 CU YARDS.

NOTES

BAFFLE WALL REPAIRS (TYP.)

SEE DETAIL ON SHEET S-113

SLUICE GATE MODIFICATIONS (TYP)

CONDUIT FLOW METER

VISITOR'S CENTER

BASEMENT IMPROVEMENTS

WASHINGTON AQUEDUCT DIVISION NAME:

80' X 20' STAGING AND TRAILER AREA

LIMIT OF DISTURBANCE

MEMBRANE COVERING (SEE NOTE 4)

ADAPTED FROM BASE PLANS PREPARED BY:

Fss LAND SURVEYORS AND SONSULANTS

P.O.BOX 2075, AIBONITO, P.R. 00705

(F)787-746-5039

AUGUST 6, 2018

REPLACE AND RE-ROUTE

GATE HOUSE INSTRUMENT

CLUSTER DRAIN LINE

STOCKPILE AND

LAYDOWN AREA

SLUICE GATE ADDITION

LIMITS OF DISTURBANCE

SEE DRAWING C-103

FOR GRADING PLAN

JULY 2020

0 07/10/20 ORIGINAL DOCUMENTS, ISSUED FOR CONSTRUCTION

P:\01 Active Projects\M001-USACE_Baltimore\M001000102-Dalecarlia Clearwells\31 Authoring Cad Files\CIVIL\C-101 - key plan.dwg, 7/10/2020 9:53:04 AM, ARCH full bleed E1 (30.00 x 42.00 Inches)

This document was originally issued and sealed by George Ajy, DC PE No. 922227, on

07/10/2020. This document shall not be

I N

PARKING AREA

CHLORINE

BUILDING

HYPO-

CHLORITE &

CAUSTIC

SODA

FACILITY

SUPER STRUCTURE

GATEHOUSE

DALECARLIA PUMPING

STATION

PLANTING

EXHAUST

VENT

EXHAUST

VENT

ELECTRICAL

TRANSFORMER

ELECTRICAL

TRANSFORMER

ELECTRICAL

TRANSFORMER

ELECTRICAL

TRANSFORMER

ELECTRICAL

TRANSFORMER

POND

GATE

I D

GATE

VALVE

GATE

VALVE

GATE

VALVE

GATE

VALVE

GRAVEL

I N

FH 8-540A

GATE

VALVE 4-250

GATE

VALVE

EX.BY-PASS

CHAMBER NO. 1

EX.BY-PASS

CHAMBER NO. 2

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

T E

L E

M ac A

U R

LEVAR

N W

REV DATE DESCRIPTION BY

DRAWING NUMBER PLATE

SCALE:

DATE:

CAD BY:

CHECKED BY:

U.S. ARMY ENGINEER DISTRICT, BALTIMORE

CORPS OF ENGINEERS

BALTIMORE, MARYLAND

US Army Corps of Engineers

SHEET:

CIVIL

WASHINGTON AQUEDUCT

DALECARLIA WATER TREATMENT PLANT, WASHINGTON, D.C.

40.34-01-C-102

AS SHOWN

G.A.

Y.Z.

S.S.

30 MG CLEARWELL

GRADING PLAN

CLEARWELLS MAINTENANCE AND

IMPROVEMENTS

C-102

LIMITS OF

DISTURBANCE

30 MG CLEARWELL CUT AND FILL VOLUMES (CU. YDS)

CUT FILL NET

329 479

150(FILL)

J.M.

1. CONTRACTOR TO RE-GRADE OVER THE CLEARWELL TO

THE CONTOURS AND DRAINAGE PATTERNS INDICATED ON

THIS SHEET. THE OBJECTIVE IS TO RE-GRADE AND DRAIN

AWAY ALL WATER TO CATCH BASINS ON THE SOUTH AND

WEST SIDES AND NATURAL SWALES ON THE NORTH AND

EAST SIDES .

2. EXISTING STRUCTURES TO REMAIN AND NOT BE DISTURBED

DURING RE-GRADING. RE-GRADING AROUND THESE AND NEW

STRUCTURES SHALL DRAIN WATER AWAY FROM EXISTING

STRUCTURES.

3. CONTRACTOR TO RETAIN EXISTING CATCH BASINS

UNLESS GRADING PLANS REQUIRE REPLACEMENT.

4. CONTRACTOR TO VERIFY EXISTING STORM WATER

NETWORK AT SOUTH SIDE OF 30MG CLEARWELL AND

AND CCTV AND CLEAN INDICATED STORM SEWER LINES

(APPROXIMATELY 256 L.F. 12" STORM SEWER).

5. THE TOTAL ROOF LOAD SHALL NOT EXCEED 300 PSF

UNIFORM LOAD. UNDER NO CIRCUMSTANCES SHALL

THE BALANCED LIVE LOADING EXCEED 60 PSF. THE

COMBINED UNIFORM ROOF LOADING SHALL CONSISTS

OF ONE OF THE FOLLOWING COMBINATIONS

a. A MAXIMUM EARTH FILL HEIGHT OF 2'-0” AND 60 PSF

(MAXIMUM) LIVE LOADING.

b. A MAXIMUM EARTH FILL HEIGHT OF 2'-9” AND 20 PSF

(MAXIMUM) LIVE LOADING.

c. AN INTERPOLATION BETWEEN OPTIONS A AND B NOT

EXCEEDING 300 PSF COMBINED LOADING.

6. ALL CONSTRUCTION EQUIPMENT AND LOADING MUST

NOT EXCEED THE ALLOWED 60 PSF (MAXIMUM) LIVE

7. CONTRACTOR TO VERIFY EXISTING UTILITIES FOR

INSTALLATION OF 2" PVC SAMPLE DRAIN. CONTRACTOR

TO VERIFY AND MAINTAIN MIN 3' COVER FOR SAMPLE DRAIN

OUTSIDE OF CLEARWELL. 2" PVC SAMPLE DRAIN SHOWN IS A

CONTINUATION OF THAT SHOWN IN GATE HOUSE ON M-112

AND IS TERMINATED ON M-113.

8. CONTRACTOR TO RESTORE SITE AND ESTABLISH

VEGETATIVE STABILIZATION AFTER RE-GRADING.

9. FUEL STORAGE AND OTHER POSSIBLE CONTAMINATION

RISKS TO FINISHED WATER STORAGE DURING

CONSTRUCTION MUST BE KEPT AT MINIMUM 50 FEET FROM

THE BOUNDARIES OF EACH CLEARWELL. ADDITIONALLY

RE-FUELING OF ALL EQUIPMENT DURING CONSTRUCTION

SHALL BE DONE IN VICINITY OF LAYDOWN AREA AND/OR AT

LEAST 200 FEET FROM THE LIMITS OF CLEARWELL.

10.CONTRACTOR TO PREVENT ANY SOIL OR OTHER FOREIGN

MATTER POLLUTION INTO CLEARWELL.

11. CONTRACTOR TO WRAP 2" SAMPLE LINE IN

" FOAM PIPE

INSULATION TO PREVENT FREEZING.

NOTES

EL 139.57

LIMITS OF DISTURBANCE

LIMITS OF GRADING

INSTALL NEW WINGWALL

AND FLAP VALVE ON 48"

OVERFLOW LINE

TEMPORARY

CONSTRUCTION

ACCESS ROAD TO

HEADWALL

EXIST.12"

STORM SEWER

CCTV AND CLEAN

EXIST. STORM SEWER

SEE NOTE 4

TRAILER AND LAYDOWN AREA

SLOPE GRADING TO TOP OF

EXIST. GRATE ELEVATION

SLOPE GRADING TO TOP OF

EXIST. GRATE ELEVATION

EL. 140.68

EL. 140.48

EL. 140.54

EL. 140.59

EL. 140.64

EL. 140.1

SLOPE GRADING TO TOP OF

EXIST. GRATE ELEVATION

EL 139.95

EL. 139.7

EL. 137.5

EL. 137.0

HORIZONTAL DIRECTIONAL DRILL

2" PIPE FOR ROAD CROSSING

SEE NOTE 7

2" PVC SAMPLE DRAIN

APPROX. LENGTH: 140'

EXISTING

GATE HOUSE

NOTE 2

(TYP.)

OVERFLOW INLET

SCREEN INSTALLATION

WASHINGTON AQUEDUCT DIVISION NAME:

JULY 2020

0 07/10/20 ORIGINAL DOCUMENTS, ISSUED FOR CONSTRUCTION

SEE M-113 FOR

CONTINUATION

This document was originally issued and sealed by George Ajy, DC PE No. 922227, on

07/10/2020. This document shall not be

E W

A L K

I D

E W

A L K

I D

D-10 PUMP

STA.

D-54

GUARD

GOUSE

DALECARLIA

ADMINISTRATION

BUILDING

VISITOR CENTER

(OLD PUMP STA.)

FILTERS

BUILDING

I N

PLANTING

DALECARLIA

CHEMICAL

BUILDING

PLANTING

RAIN

METER

PLANTING

PULLBOX 8-538

WATER

VALVE

30" WASH WATER

MH 8-471

MH 8-470

GATE VALVE

4-194

8-537

8-450

FILTERED WATER

RESERVOIR

I L

S T

RAIN

METER

S T

PULL BOX

TRAFFIC LIGHT

GATE

VALVE

ELEC. PANEL

ELEC.

UNDERGROUND

HIGH

VOLTAGE MH

T E

L E

T E

L E

T E

L E

T E

L E

M ac A

U R

LEVAR

N W

L O

REV DATE DESCRIPTION BY

DRAWING NUMBER PLATE

SCALE:

DATE:

CAD BY:

CHECKED BY:

U.S. ARMY ENGINEER DISTRICT, BALTIMORE

CORPS OF ENGINEERS

BALTIMORE, MARYLAND

US Army Corps of Engineers

SHEET:

CIVIL

WASHINGTON AQUEDUCT

DALECARLIA WATER TREATMENT PLANT, WASHINGTON, D.C.

40.34-01-C-103

AS SHOWN

G.A.

J.M.

S.S.

15 MG CLEARWELL

GRADING PLAN

CLEARWELLS MAINTENANCE AND

IMPROVEMENTS

C-103

CCTV AND CLEAN

EXIST. STORM SEWER

NOTE 2

12" RCP

15 MG CLEARWELL CUT AND FILL VOLUMES (CU. YDS)

CUT FILL NET

116 236

120 (FILL)

J.M.

WASHINGTON AQUEDUCT DIVISION NAME:

1. CONTRACTOR TO RETAIN EXISTING CATCH BASINS.

2. CONTRACTOR TO CCTV AND CLEAN INDICATED STORM

SEWER LINES. APPROXIMATE LENGTH IS 320 L.F.

3. CONTRACTOR TO INSTALL REMAINDER OF

WATERPROOF MEMBRANE; APPROXIMATE AREA AND

ESTIMATED AREA OF INSTALLATION IS 500 SF

LOCATION SHOWN.

4. THE TOTAL ROOF LOAD OVER CLEARWELL SHALL NOT

EXCEED 300 PSF UNIFORM LOAD. THIS UNIFORM LOAD

CONSISTS OF A MAXIMUM EARTH FILL HEIGHT OF 2'-0”

AND 60 PSF (MAXIMUM) LIVE LOADING.

5. ALL CONSTRUCTION EQUIPMENT AND LOADING MUST

NOT EXCEED THE ALLOWED 60 PSF (MAXIMUM) LIVE

6. CONTRACTOR TO REPLACE AND RESTORE IF EXISTING

MEMBRANE IS DAMAGED DURING CONSTRUCTION.

7. CONTRACTOR TO RESTORE SITE AND ESTABLISH

VEGETATIVE STABILIZATION AFTER RE-GRADING.

8. FUEL STORAGE AND OTHER POSSIBLE CONTAMINATION

RISKS TO FINISHED WATER STORAGE DURING

CONSTRUCTION MUST BE KEPT AT MINIMUM 50 FEET

FROM THE BOUNDARIES OF EACH CLEARWELL.

NOTES

MEMBRANE COVERING

NOTE 3, NOTE 6

LIMITS OF

DISTURBANCE

LIMITS OF

GRADING

SLOPE GRADING TO TOP OF

EXIST. GRATE ELEVATION

SLOPE GRADING TO TOP OF

EXIST. GRATE ELEVATION

EL. 148.33

EL. 147.64

EL. 147.52

15 MG CLEARWELL

DRAINAGE CHAMBER

MODIFICATIONS

CONTRACTOR TO DEMO AND

RE-PAVE THE SIDEWALK AS

NEEDED

JULY 2020

0 07/10/20 ORIGINAL DOCUMENTS, ISSUED FOR CONSTRUCTION

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This document was originally issued and sealed by George Ajy, DC PE No. 922227, on

07/10/2020. This document shall not be

C-104

C GRAVEL ACCESS ROAD

4" CR-6 STONE

12" AGGREGATE AASHTO NO. 1

2% SLOPE

COMPACTED SUBGRADE (95% OF MAXIMUM DENSITY ASTM D1557)

6'-0"

12'-0" DRIVE AISLE

NONWOVEN GEOTEXTILE

MEETING AASHTO M-288 FOR

STABLIZATION FABRIC

12' TEMPORARY ACCESS ROAD

SCALE: NONE

CONSTRUCTION SPECIFICATIONS

1. PREPARE SUBGRADE AND PLACE NONWOVEN GEOTEXTILE.

2. MAINTAIN ACCESS ROAD IN A CONDITION THAT MINIMIZES TRACKING OF SEDIMENT.

ADD STONE OR MAKE OTHER REPAIRS AS CONDITIONS DEMAND TO MAINTAIN

CLEAN SURFACE, MOUNTABLE BERM, AND SPECIFIED DIMENSIONS.

3. IMMEDIATELY REMOVE STONE AND/OR SEDIMENT SPILLED, DROPPED, OR

TRACKED ONTO ADJACENT ROADWAY.

4. WASHING ROADWAY TO REMOVE MUD TRACKED ONTO PAVEMENT IS NOT ACCEPTABLE

UNLESS WASH WATER IS DIRECTED TO AN APPROVED SEDIMENT CONTROL TREATMENT STRUCTURE.

5. AFTER CONSTRUCTION, REMOVE TEMPORARY ACCESS ROAD AND RESTORE TO ORIGINAL

CONDITION WITH SEED OR SOD.

MEMBRANE TERMINATION

SCALE: NONE

3/8" X 3" S. STL.

CONCRETE

EXPANSION

ANCHORS @ 6" O.C.

60 MIL HDPE

WATERPROOF

MEMBRANE TO

MATCH EXISTING

EXIST. CONC. ROOF SLAB

1/4" x 2" S. STL. BATTEN BAR

1/4" x 2" NEOPRENE GASKET

I N

WASHINGTON AQUEDUCT DIVISION NAME:

Y.Z.

REV DATE DESCRIPTION BY

DRAWING NUMBER PLATE

SCALE:

DATE:

CAD BY:

CHECKED BY:

U.S. ARMY ENGINEER DISTRICT, BALTIMORE

CORPS OF ENGINEERS

BALTIMORE, MARYLAND

US Army Corps of Engineers

SHEET:

CIVIL

WASHINGTON AQUEDUCT

DALECARLIA WATER TREATMENT PLANT, WASHINGTON, D.C.

40.34-01-C-104

AS SHOWN

G.A.

Y.Z.

S.S.

CIVIL DETAILS

CLEARWELLS MAINTENANCE AND

IMPROVEMENTS

CONCRETE HEADWALL WITH FLAP VALVE

NTS

1. CONTRACTOR TO INSTALL FLAP GATE ON EXISTING

OVERFLOW PIPE.

2. RESTORE FINISHED GRADES TO EXISTING CONDITIONS

AFTER EXCAVATION AND BACKFILL.

3. INVERT ELEVATION BASED ON RECORD DRAWING USING WAD COORDINATE

SYSTEM. CONTRACTOR TO VERIFY IN FIELD.

NOTES

EXIST. CONC WALL

EXIST. MEMBRANE

CONTINUOUS EXTRUSION WELD NEW

AND EXISTING MEMBRANE LAYERS

TOGETHER. LAP PER MFR'S

RECOMMENDATIONS.

DEMOLITION

RECONSTRUCTION

REMOVE EXISTING RACK

REMOVE PORTION OF

EXISTING CONCRETE

CONTRACTOR TO PROVIDE BRACING

AS REQUIRED TO ENSURE HEADWALL

DOES NOT MOVE UNTIL NEW CONCRETE

SLAB HAS ATTAINED ITS 28-DAY DESIGN

COMPRESSIVE STRENGTH

FLAP GATE MOUNTED

TO EXISTING CONCRETE

TOC EL 112.00

(WAD DATUM)

NEW 8" THICK CONCRETE SLAB. MATCH

ORIGINAL WIDTH

#4X3'-0" ADHESIVE DOWEL

WITH 6" EMBED AT 12",

EACH END CENTERED

IN SLAB DEPTH

#4@12" EW. 2" CLEAR

FROM TOP

9'-0"

JUTE & ASPHALT

JOINT

TAMPED EARTH

1'-0"

JUTE & ASPHALT

JOINT

TAMPED EARTH

48" CONCRETE CULVERT FROM

EXISTING 30 MG CLEARWELL

OVERFLOW PIPE

9'-0"

1'-0"

TOC EL 146.5

EXISTING GRADE EL ±148.5

48" CONCRETE CULVERT FROM

EXISTING 30 MG CLEARWELL

OVERFLOW PIPE

APPROX 4-FT - SEE NOTE 1

NOTES:

1. CONTRACTOR TO VERIFY THE DEPTH OF EXCAVATION AND

BACKFILL REQUIRED FOR MEMBRANE TERMINATION.

2. FOR GENERAL STRUCTURAL NOTES, SEE SHEET S-001 AND S-002.

JULY 2020

0 07/10/20 ORIGINAL DOCUMENTS, ISSUED FOR CONSTRUCTION

1/4" R

SEE PLAN FOR WIDTH

SLOPE TO DRAIN 1/4": 1' - 0"

FINISHED GRADE, SLOPE

AWAY FROM SIDEWALK (TYP.)

X X

6 X 6- W1.4 X W1.4 WWF

BROOM FINISH

COMPACTED

SUBGRADE

CONCRETE SIDEWALK DETAILS

NTS

C-104C-102

C-104C-103

C-104C-101

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This document was originally issued and sealed by George Ajy, DC PE No. 922227, on

07/10/2020. This document shall not be

CE-101

EROSION CONTROL PLAN

COVER

WASHINGTON AQUEDUCT

DALECARLIA WATER TREATMENT PLANT, WASHINGTON, DC

CLEARWELLS MAINTENANCE & IMPROVEMENTS

VICINITY MAPLOCATION MAP

WASHINGTON AQUEDUCT

DALECARLIA WATER

TREATMENT PLANT

McMILLAN WATER

TREATMENT PLANT

DALECARLIA WATER TREATMENT PLANT

SHEET INDEX

SHEET NAME DWG NUMBER

EROSION CONTROL COVER SHEET CE-101

EROSION CONTROL PLAN MARYLAND NOTES CE-102

EROSION CONTROL PLAN DISTRICT OF COLUMBIA NOTES CE-103

30 MG CLEARWELL EROSION CONTROL PLAN PHASE 1 CE-104

30 MG CLEARWELL EROSION CONTROL PLAN PHASE 2 CE-105

30 MG CLEARWELL EROSION CONTROL PLAN PHASE 3 CE-106

15 MG CLEARWELL EROSION CONTROL PLAN PHASE 1 CE-107

15 MG CLEARWELL EROSION CONTROL PLAN PHASE 2 CE-108

15 MG CLEARWELL EROSION CONTROL PLAN PHASE 3 CE-109

EROSION CONTROL STANDARD DETAILS CE-110

EROSION CONTROL STANDARD DETAILS CE-111

FEMA FLOODPLAIN MAP

DATE: 07/10/20

EROSION SEDIMENTATION & POLLUTION CONTROL PLANS

DALECARLIA WATER TREATMENT PLANT

WASHINGTON DC, 20016

SITE DATA:

DISTURBED ACREAGE = ±6.4 ACRES

DISTURBED ACERAGE (MARYLAND) = ±4.6 ACRES

DISTURBED ACERAGE (DISTRICT OF COLUMBIA) = ±1.8 ACRES

LAND DISTURBANCE CONSTRUCTION ACTIVITY SEQUENCE

THE FOLLOWING SEQUENCES ARE TO BE IMPLEMENTED IN THE ORDER SHOWN UNLESS INCLEMENT WEATHER, SITE CONDITIONS, REVISIONS, PRE-CONSTRUCTION CONFERENCE, ETC, DICTATES A DEVIATION FROM THIS

SCHEDULE. IF A DEVIATION IS UNDERTAKEN OR ANTICIPATED. THE ENGINEER SHALL BE NOTIFIED AND THE

CHANGE OF SEQUENCE SHALL BE RECORDED IN THE DAILY LOG.

PHASE 2 - INTERMEDIATE

CONSTRUCTION

PHASE 2 - INTERMEDIATE

OPERATE, MAINTAIN, AND

MONITOR SEDIMENT &

EROSION CONTROLS

PHASE 1 - INITIAL

INSTALL E&S CONTROLS

* SEDIMENT AND EROSION CONTROL MEASURES TO BE INSPECTED DAILY. MAINTAIN BMP'S THROUGHOUT LAND DISTURBANCE ACTIVITY.

(SEE SPECIFIC PHASE SCHEDULES ON INITIAL, INTERMEDIATE AND FINAL ESC PLANS)

PHASE 3 - FINAL

REMOVE E&S CONTROLS

HYDROSEED DISTURBED AREA

AFTER DEMOBILIZATION

GENERAL CONSTRUCTION SCHEDULE

BEGIN CONSTRUCTION

2 4 6 8 10 12

Y.Z.

40.34-01-CE-101

REV DATE DESCRIPTION BY

DRAWING NUMBER PLATE

SCALE:

DATE:

CAD BY:

CHECKED BY:

U.S. ARMY ENGINEER DISTRICT, BALTIMORE

CORPS OF ENGINEERS

BALTIMORE, MARYLAND

US Army Corps of Engineers

SHEET:

CIVIL

WASHINGTON AQUEDUCT

DALECARLIA WATER TREATMENT PLANT, WASHINGTON, D.C.

AS SHOWN

G.A.

Y.Z.

CLEARWELLS MAINTENANCE AND

IMPROVEMENTS

14 16

MONTHS AFTER BEGINNING CONSTRUCTION

WASHINGTON AQUEDUCT DIVISION NAME:

JULY 2020

0 07/10/20 ORIGINAL DOCUMENTS, ISSUED FOR CONSTRUCTION

P:\01 Active Projects\M001-USACE_Baltimore\M001000102-Dalecarlia Clearwells\31 Authoring Cad Files\CIVIL\CE-101-103 Erosion Control Notes.dwg, 7/10/2020 10:10:04 AM, ARCH full bleed E1 (30.00 x 42.00 Inches)

This document was originally issued and sealed by George Ajy, DC PE No. 922227, on

07/10/2020. This document shall not be

CE-102

MARYLAND NOTES

MDE EROSION, SEDIMENTATION, AND POLLUTION CONTROL GENERAL NOTES

THE REQUIREMENT OF ANY OF THE FOLLOWING INDIVIDUAL NOTES NOT APPLICABLE TO THE SUBJECT

PROJECT IS NOT BINDING UPON THE APPLICANT OR THE APPLICANT'S CONTRACTOR.

1. THE CONTRACTOR SHALL NOTIFY THE MARYLAND DEPARTMENT OF THE ENVIRONMENT (MDE) SEDIMENT CONTROL INSPECTOR AT 410-901-4020 AT LEAST 48 HOURS PRIOR TO COMMENCING ANY LAND DISTURBING ACTIVITIES AND, UNLESS WAIVED BY THE SEDIMENT CONTROL INSPECTOR, SHALL BE REQUIRED TO HOLD A PRE-CONSTRUCTION MEETING AT THE PROJECT SITE. THE CONTRACTOR MUST PROVIDE THE NAME OF THE PERSON ON THE SITE WHO IS RESPONSIBLE FOR INSPECTION AND MAINTENANCE OF EROSION AND SEDIMENT CONTROL MEASURES AND A COPY OF THEIR GREEN CARD TO THE SEDIMENT CONTROL INSPECTOR.

2. ALL PROJECTS WITH CONSTRUCTION ACTIVITIES DISTURBING 1 ACRE OR MORE ARE REQUIRED TO SUBMIT A GENERAL PERMIT (NOI) TO MDE TO COMPLY WITH THE GENERAL PERMIT FOR CONSTRUCTION ACTIVITY FOR STORMWATER DISCHARGES. THE GENERAL PERMIT (NOI) MUST BE APPROVED PRIOR TO DISTURBANCE ACTIVITIES. TO OBTAIN A GENERAL PERMIT (NOI) FORM, CONTACT THE PERMITS COORDINATOR AT THE MDE COMPLIANCE PROGRAM AT 410-537-3510.

3. THE LIMIT OF DISTURBANCE SHALL BE CLEARLY DELINEATED IN THE FIELD PRIOR TO THE PRE-CONSTRUCTION MEETING AND ANY GRADING ACTIVITIES TO

ENSURE COMPLIANCE WITH

THE APPROVED PLAN.

4. THE APPROVED EROSION AND SEDIMENT CONTROL PLAN MUST BE KEPT AT THE PROJECT SITE.

5. THE MDE RESERVES THE RIGHT TO MODIFY THE EROSION AND SEDIMENT CONTROL PLANS.

6. THE MDE MAY REVOKE THE APPROVAL OF THE EROSION AND SEDIMENT CONTROL PLAN IF WORK PERFORMED AT THE PROJECT SITE DOES NOT CONFORM TO THE PROVISIONS OF THE GRADING PERMIT, TO THE APPROVED PLAN OR TO ANY WRITTEN INSTRUCTIONS FROM MDE.

7. THE CONTRACTOR MUST REQUEST THAT THE SEDIMENT CONTROL INSPECTOR APPROVE WORK COMPLETED IN ACCORDANCE WITH THE APPROVED EROSION

AND SEDIMENT CONTROL PLAN, AT THE FOLLOWING POINTS OF PROJECT DEVELOPMENT:

a. UPON COMPLETION OF THE INSTALLATION OF PERIMETER EROSION AND SEDIMENT CONTROL MEASURES BUT BEFORE PROCEEDING WITH ANY OTHER EARTH DISTURBANCE OR GRADING. OTHER BUILDING OR GRADING INSPECTION APPROVALS MAY NOT BE AUTHORIZED UNTIL THIS INITIAL APPROVAL BY MDE IS MADE.

b. PRIOR TO REMOVAL OR MODIFICATION OF ANY SEDIMENT CONTROL STRUCTURE(S).

c. UPON FINAL STABILIZATION OF THE SITE AND PRIOR TO THE REMOVAL OF ANY SEDIMENT CONTROL MEASURES.

8. THE CONTRACTOR SHALL CONSTRUCT ALL EROSION AND SEDIMENT CONTROL MEASURES PER THE APPROVED PLAN AND CONSTRUCTION SEQUENCE AND SHALL HAVE THEM INSPECTED AND APPROVED BY THE SEDIMENT CONTROL INSPECTOR PRIOR TO BEGINNING ANY OTHER LAND DISTURBANCES.

9. THE CONTRACTOR SHALL ENSURE THAT ALL RUNOFF FROM DISTURBED AREAS IS DIRECTED TO THE SEDIMENT CONTROL DEVICES AND SHALL NOT REMOVE ANY EROSION OR SEDIMENT CONTROL MEASURE WITHOUT PRIOR PERMISSION FROM THE SEDIMENT CONTROL INSPECTOR.

10. THE FOLLOWING MINOR PLAN MODIFICATIONS MAY BE APPROVED BY THE SEDIMENT CONTROL INSPECTOR IN THE FIELD:

a. SEDIMENT CONTROL STRUCTURES (EXCEPT BASINS AND TRAPS) MAY BE MOVED TO MEET THE EXISTING CONTOURS AND FIELD CONDITIONS, WHEN MOVING

THESE STRUCTURES WOULD HAVE NO IMPACT ON THEIR FUNCTION OR DESIGN CRITERIA.

b. SUBSTITUTION OF PERIMETER CONTROL MEASURES MAY BE MADE PROVIDED THE MEASURE SUBSTITUTED IS EQUIVALENT (I.E., SILT FENCE FOR STRAW BALES) OR IS AN UPGRADE OF THE ORIGINAL MEASURE (I.E., SILT FENCE TO A PERIMETER BERM WITH PROPERLY SIZED OUTLET).

c. ADDITION AND EXTENSION OF PERIMETER CONTROLS (INCLUDING STONE CONSTRUCTION ENTRANCES) MAY BE MADE TO MEET FIELD CONDITIONS. ANY MODIFICATIONS TO THE PLAN WHICH ARE NOT LISTED ABOVE REQUIRE THE PLAN TO BE SUBMITTED TO THE MDE FOR REVIEW AND APPROVAL.

11. THE CONTRACTOR SHALL PROTECT ALL POINTS OF CONSTRUCTION INGRESS AND EGRESS TO PREVENT THE DEPOSITION OF MATERIALS ONTO PUBLIC ROADS.

ALL MATERIALS DEPOSITED ONTO PUBLIC ROADS SHALL BE REMOVED IMMEDIATELY.

12. ON-SITE TEMPORARY STOCKPILE AREAS MUST BE PLACED AS SHOWN ON THE APPROVED PLAN. IF THE CONSTRUCTION SCHEDULE IS TO EXCEED 3 DAYS, THE STOCKPILE AREAS MUST BE STABILIZED. STOCKPILE AREAS SHOULD NOT EXCEED FIFTEEN FEET IN HEIGHT. IF A STOCKPILE IS TO EXCEED FIFTEEN FEET IN HEIGHT, IT MUST BE SHOWN ON THE PLAN TO BE TERRACED WITH PIPE SLOPE DRAINS INSTALLED AND APPROVED BY MDE. UPON THE COMPLETION OF THE USE OF THE STOCKPILE AREA, EXISTING GROUND SURFACES SHALL BE RESTORED TO THEIR ORIGINAL CONDITIONS AND PERMANENTLY STABILIZED.

13. VARIOUS STEPS IN THE SEQUENCE OF CONSTRUCTION MAY REQUIRE THE CONTRACTOR TO REMOVE EXCESS EXCAVATED MATERIAL TO AN APPROVED LOCATION OR TO IMPORT MATERIAL FROM AN APPROVED LOCATION. FOR PURPOSES OF THIS PLAN, AN APPROVED LOCATION SHALL BE ONE WHICH IS OPERATING UNDER APPROVED EROSION AND SEDIMENT CONTROL PLAN AND AN ACTIVE GRADING PERMIT AT THE TIME OF CONSTRUCTION.

14. THE CONTRACTOR SHALL INSPECT DAILY AND MAINTAIN CONTINUOUSLY IN AN EFFECTIVE OPERATING CONDITION ALL EROSION AND SEDIMENT CONTROL MEASURES UNTIL SUCH TIME AS THEY ARE REMOVED WITH PRIOR PERMISSION FROM THE SEDIMENT CONTROL INSPECTOR.

15. FOLLOWING INITIAL SOIL DISTURBANCE OR RE-DISTURBANCE, PERMANENT OR TEMPORARY STABILIZATION SHALL BE COMPLETED WITHIN:

a. THREE (3) CALENDAR DAYS AS TO THE SURFACE OF ALL PERIMETER CONTROLS, DIKES, SWALES, DITCHES, PERIMETER SLOPES, AND ALL SLOPES EQUAL TO OR

GREATER THAN 3 HORIZONTAL TO 1 VERTICAL (3:1), AND

b. SEVEN (7) DAYS AS TO ALL OTHER DISTURBED OR GRADED AREAS ON THE PROJECT SITE. THE ABOVE REQUIREMENTS DO NOT APPLY TO THOSE AREAS WHICH ARE SHOWN ON THE PLAN AND ARE CURRENTLY BEING USED FOR MATERIAL STORAGE OR FOR THOSE AREAS ON WHICH ACTUAL CONSTRUCTION ACTIVITIES ARE CURRENTLY BEING PERFORMED OR TO INTERIOR AREAS OF A SURFACE MINE SITE WHERE THE STABILIZATION MATERIAL WOULD CONTAMINATE THE RECOVERABLE RESOURCE. MAINTENANCE SHALL BE PERFORMED AS NECESSARY TO ENSURE THAT THE STABILIZED AREAS CONTINUOUSLY MEET THE APPROPRIATE REQUIREMENTS

OF THE MOST CURRENT MARYLAND STANDARDS AND SPECIFICATIONS FOR SOIL EROSION AND

SEDIMENT CONTROL.

16. SEDIMENT CONTROL PRACTICES WILL BE MAINTAINED UNTIL THE ENTIRE CONTRIBUTING AREA TO THE PRACTICE HAS BEEN PERMANENTLY STABILIZED AND MEETS THE SATISFACTION OF THE SEDIMENT CONTROL INSPECTOR. SEDIMENT CONTROLS MAY ONLY BE REMOVED WITH THE AUTHORIZATION OF THE SEDIMENT

CONTROL INSPECTOR.

17. ALL AREAS DISTURBED BY THE REMOVAL OF SEDIMENT CONTROL DEVICES MUST BE IMMEDIATELY STABILIZED.

18. SURFACE DRAINAGE FLOWS OVER UNSTABILIZED CUT AND FILL SLOPES SHALL BE CONTROLLED BY EITHER PREVENTING DRAINAGE FLOWS FROM TRAVERSING THE SLOPES OR BY INSTALLING PROTECTIVE DEVICES TO CONVEY THE WATER DOWNSLOPE WITHOUT CAUSING EROSION. DIKES SHALL BE INSTALLED AND MAINTAINED AT THE TOP OF CUT OR FILL SLOPES UNTIL THE SLOPE AND DRAINAGE AREA TO IT ARE FULLY STABILIZED, AT WHICH TIME THE DIKES MUST BE REMOVED AND FINAL GRADING DONE TO PROMOTE SHEET FLOW DRAINAGE. EROSION CONTROL MEASURES MUST BE IMPLEMENTED AT POINTS OF CONCENTRATED FLOW

WHERE EROSION IS LIKELY TO OCCUR.

19. NO PERMANENT CUT OR FILL SLOPE WITH A GRADIENT STEEPER THAN 3:1 WILL BE PERMITTED IN LAWN MAINTENANCE AREAS. A SLOPE GRADIENT OF UP TO 2:1 WILL BE PERMITTED IN NON-MAINTENANCE AREAS PROVIDED THAT THOSE AREAS ARE INDICATED ON THE EROSION AND SEDIMENT CONTROL PLANS WITH A LOW-MAINTENANCEGROUND COVER SPECIFIED FOR PERMANENT STABILIZATION. SLOPE GRADIENT STEEPER THAN 2:1 WILL NOT BE PERMITTED WITH VEGETATION

STABILIZATION.

20. ALL FLOW LINES ARE TO BE STABILIZED WITH SOD OR SEED WITH EROSION CONTROL MATTING TO A DEPTH OF FLOW OF 1 FOOT.

21. SEDIMENT TRAPS OR BASINS ARE NOT PERMITTED WITHIN 20 FEET OF A FOUNDATION WHICH IS EXISTING OR UNDER CONSTRUCTION. NO STRUCTURE MAY BE

CONSTRUCTED WITHIN 20 FEET OF AN ACTIVE SEDIMENT TRAP OR BASIN.

22. TEMPORARY SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE CLEANED OUT AND RESTORED TO THE ORIGINAL DIMENSIONS WHEN SEDIMENT HAS

ACCUMULATED TO ONE HALF (1/2) THE WET STORAGE DEPTH OF THE TRAP OR BASIN.

STABLIZATION NOTES

1. SOIL PREPARATION

a) TEMPORARY STABILIZATION

i) SEEDBED PREPARATION CONSISTS OF LOOSENING SOIL TO A DEPTH OF 3 TO 5 INCHES BY MEANS OF SUITABLE AGRICULTURAL OR CONSTRUCTION EQUIPMENT, SUCH AS DISC HARROWS OR CHISEL PLOWS OR RIPPERS MOUNTED ON CONSTRUCTION EQUIPMENT. AFTER THE SOIL IS LOOSENED, IT MUST NOTBE ROLLED OR DRAGGED SMOOTH BUT LEFT IN THE ROUGHENED CONDITION. SLOPES 3:1 OR FLATTER ARE TO BE TRACKED WITH RIDGES RUNNING PARALLEL TO THE CONTOUR OF

THE SLOPE.

ii) APPLY FERTILIZER AND LIME AS PRESCRIBED ON THE PLANS.

iii) INCORPORATE LIME AND FERTILIZER INTO THE TOP 3 TO 5 INCHES OF SOIL BY DISKING OR OTHER SUITABLE MEANS.

2. PERMANENT STABILIZATION

a) A SOIL TEST IS REQUIRED FOR ANY EARTH DISTURBANCE OF 5 ACRES OR MORE. THE MINIMUM SOIL CONDITIONS REQUIRED FOR PERMANENT VEGETATIVE

ESTABLISHMENT ARE:

i) SOIL PH BETWEEN 6.0 AND 7.0.

ii) SOLUBLE SALTS LESS THAN 500 PARTS PER MILLION (PPM).

iii) SOIL CONTAINS LESS THAN 40 PERCENT CLAY BUT ENOUGH FINE GRAINED MATERIAL (GREATER THAN 30 PERCENT SILT PLUS CLAY) TO PROVIDE THE CAPACITY TO HOLD A MODERATE AMOUNT OF MOISTURE. AN EXCEPTION: F LOVEGRASS WILL BE PLANTED, THEN A SANDY SOIL (LESS THAN 30 PERCENT SILT PLUS CLAY) WOULD

BE ACCEPTABLE.

iv) SOIL CONTAINS 1.5 PERCENT MINIMUM ORGANIC MATTER BY WEIGHT.

v) SOIL CONTAINS SUFFICIENT PORE SPACE TO PERMIT ADEQUATE ROOT PENETRATION.

b) APPLICATION OF AMENDMENTS OR TOPSOIL IS REQUIRED IF ON-SITE SOILS DO NOT MEET THE ABOVE CONDITIONS.

c) GRADED AREAS MUST BE MAINTAINED IN A TRUE AND EVEN GRADE AS SPECIFIED ON THE APPROVED PLAN, THEN SCARIFIED OR OTHERWISE LOOSENED TO A

DEPTH OF 3 TO 5 INCHES.

d) APPLY SOIL AMENDMENTS AS SPECIFIED ON THE APPROVED PLAN OR AS INDICATED BY THE RESULTS OF A SOIL TEST.

e) MIX SOIL AMENDMENTS INTO THE TOP 3 TO 5 INCHES OF SOIL BY DISKING OR OTHER SUITABLE MEANS.RAKE LAWN AREAS TO SMOOTH THE SURFACE, REMOVE LARGE OBJECTS LIKE STONES AND BRANCHES,AND READY THE AREA FOR SEED APPLICATION. LOOSEN SURFACE SOIL BY DRAGGING WITH A HEAVY CHAIN OR OTHER EQUIPMENT TO ROUGHEN THE SURFACE WHERE SITE CONDITIONS WILL NOT PERMIT NORMAL SEEDBED PREPARATION. TRACK SLOPES 3:1 OR FLATTER WITH TRACKED EQUIPMENT LEAVING THE SOIL IN AN IRREGULAR CONDITION WITH RIDGES RUNNING PARALLEL TO THE CONTOUR OF THE SLOPE.LEAVE THE TOP 1 TO 3 INCHES OF SOIL LOOSE AND FRIABLE. SEEDBED LOOSENING MAY BE UNNECESSARY ON NEWLY DISTURBED AREAS.

3. TOPSOILING

a) TOPSOIL IS PLACED OVER PREPARED SUBSOIL PRIOR TO ESTABLISHMENT OF PERMANENT VEGETATION THE PURPOSE IS TO PROVIDE A SUITABLE SOIL MEDIUM FOR VEGETATIVE GROWTH. SOILS OF CONCERN HAVE LOW MOISTURE CONTENT, LOW NUTRIENT LEVELS, LOW PH, MATERIALS TOXIC TO PLANTS, AND/OR

UNACCEPTABLE SOIL GRADATION.

b) TOPSOIL SALVAGED FROM AN EXISTING SITE MAY BE USED PROVIDED IT MEETS THE STANDARDS AS SETFORTH IN THESE SPECIFICATIONS. TYPICALLY, THE DEPTH OF TOPSOIL TO BE SALVAGED FOR A GIVEN SOIL TYPE CAN BE FOUND IN THE REPRESENTATIVE SOIL PROFILE SECTION IN THE SOIL SURVEY PUBLISHED BY

USDA-NRCS.

c) TOPSOILING IS LIMITED TO AREAS HAVING 2:1 OR FLATTER SLOPES WHERE:

i) THE TEXTURE OF THE EXPOSED SUBSOIL/PARENT MATERIAL IS NOT ADEQUATE TO PRODUCE VEGETATIVE GROWTH.

ii) THE SOIL MATERIAL IS SO SHALLOW THAT THE ROOTING ZONE IS NOT DEEP ENOUGH TO SUPPORT PLANTS OR FURNISH CONTINUING SUPPLIES OF MOISTURE

AND PLANT NUTRIENTS.

iii) THE ORIGINAL SOIL TO BE VEGETATED CONTAINS MATERIAL TOXIC TO PLANT GROWTH.

iv) THE SOIL IS SO ACIDIC THAT TREATMENT WITH LIMESTONE IS NOT FEASIBLE.

d) AREAS HAVING SLOPES STEEPER THAN 2:1 REQUIRE SPECIAL CONSIDERATION AND DESIGN.

e) TOPSOIL SPECIFICATIONS: SOIL TO BE USED AS TOPSOIL MUST MEET THE FOLLOWING CRITERIA:

i) TOPSOIL MUST BE A LOAM, SANDY LOAM, CLAY LOAM, SILT LOAM, SANDY CLAY LOAM, OR LOAMY SANDS. OTHER SOILS MAY BE USED IF RECOMMENDED BY AN AGRONOMIST OR SOIL SCIENTIST AND APPROVED BY THE APPROPRIATE APPROVAL AUTHORITY. TOPSOIL MUST NOT BE A MIXTURE OF CONTRASTING TEXTURED

SUBSOILS AND MUST CONTAIN LESS THAN 5 PERCENT BY VOLUME OF

CINDERS, STONES, SLAG, COARSE FRAGMENTS, GRAVEL, STICKS, ROOTS, TRASH, OR OTHER MATERIALS LARGER THAN 1½ INCHES IN DIAMETER.

ii) TOPSOIL MUST BE FREE OF NOXIOUS PLANTS OR PLANT PARTS SUCH AS BERMUDA GRASS, QUACK GRASS, JOHNSON GRASS, NUT SEDGE, POISON IVY, THISTLE, OR OTHERS AS SPECIFIED.

iii) TOPSOIL SUBSTITUTES OR AMENDMENTS, AS RECOMMENDED BY A QUALIFIED AGRONOMIST OR SOIL SCIENTIST AND APPROVED BY THE APPROPRIATE

APPROVAL AUTHORITY, MAY BE USED IN LIE OF NATURAL TOPSOIL.

f) TOPSOIL APPLICATION

i) EROSION AND SEDIMENT CONTROL PRACTICES MUST BE MAINTAINED WHEN APPLYING TOPSOIL.

ii) UNIFORMLY DISTRIBUTE TOPSOIL IN A 5 TO 8 INCH LAYER AND LIGHTLY COMPACT TO A MINIMUM THICKNESS OF 4 INCHES. SPREADING IS TO BE PERFORMED IN

SUCH A MANNER THAT SODDING OR

SEEDING CAN PROCEED WITH A MINIMUM OF ADDITIONAL SOIL PREPARATION AND TILLAGE. ANY IRREGULARITIES IN THE SURFACE RESULTING FROM TOPSOILING OR

OTHER OPERATIONS MUST BE

CORRECTED IN ORDER TO PREVENT THE FORMATION OF DEPRESSIONS OR WATER POCKETS.

iii) TOPSOIL MUST NOT BE PLACED IF THE TOPSOIL OR SUBSOIL IS IN A FROZEN OR MUDDY CONDITION, WHEN THE SUBSOIL IS EXCESSIVELY WET OR IN A

CONDITION THAT MAY OTHERWISE BE

DETRIMENTAL TO PROPER GRADING AND SEEDBED PREPARATION.

4. SOIL AMENDMENTS (FERTILIZER AND LIME SPECIFICATIONS)

a) SOIL TESTS MUST BE PERFORMED TO DETERMINE THE EXACT RATIOS AND APPLICATION RATES FOR BOTH LIME AND FERTILIZER ON SITES HAVING DISTURBED AREAS OF 5…

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