REMOVE ROOF EQUIPMENT SHOWN

REMOVE PIPING, METER, AND VENT

REMOVE CENTRIFUGE EQUIPMENT

REMOVE THICKENED SLUDGE

PUMP AND CONC EQUIPMENT PAD

REMOVE STEEL MONORAIL FRAME AND ANCHORS

REMOVE MANUAL MONORAIL HOIST AND FRAME

REMOVE EXISTING DUCTS, DOORS, ROLL-

UP DOOR AND FRAMES AS INDICATED

PHOTO

NO SCALE

M502

PHOTO

NO SCALE

M500

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :5

A

M

M505

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

DEMOLITION PHOTOS

1. CONTRACTOR TO COORDINATE ALL DEMOLITION

WORK WITH THE OWNER.

2. CONTRACTOR SHALL VERIFY LOCATIONS OF ALL

EQUIPMENT PIPING AND ACCESSORIES PRIOR TO

DEMOLITION.

3. PATCH OPENINGS IN SURFACES DUE TO REMOVAL OF

EQUIPMENT, ANCHOR BOLTS, CONDUITS, OR PIPE PER

SPECIFICATION. PREPARE SURFACE AND PAINT TO

MATCH SURROUNDING SURFACE.

4. PROTECT IN PLACE ALL PIPING, SUPPORT VALVES,

INSTRUMENTS, ELECTRICAL CONDUITS, OR

APPURTENANCES NOT DESIGNATED FOR DEMOLITION.

REPLACE IN KIND ALL ITEMS DAMAGED DURING

DEMOLITION AT NO COST TO THE OWNER.

5. THE DEMOLITION DRAWINGS ARE BASED ON RECORD

DRAWINGS "WATER POLLUTION CONTROL FACILITY

UPGRADE AND EXPANSION: VOLUME 3" DATED 1992,

REVISED 1995. NEITHER THE OWNER NOR ENGINEER

ASSUME RESPONSIBILITY FOR THE ACCURACY OF

RECORD DRAWINGS.

6. REMOVE ALL ITEMS DESIGNATED FOR DEMOLITION

INCLUDING ANCILLARY ITEMS SUCH AS INSULATION,

JACKETING, SUPPORTS, ANCHORS, INSTRUMENTS

AND APPURTENANCES.

7. CONTRACTOR SHALL TAKE BEFORE AND AFTER

PHOTOS OF ALL DEMOLITION ACTIVITIES.

CONTRACTOR SHALL ENSURE PHOTOS ARE TAKEN

BEFORE ANY BACKFILLING. PHOTOS SHALL BE

TURNED OVER TO OWNER AFTER DEMOLITION

ACTIVITIES ARE COMPLETE.

GENERAL DEMOLITION NOTES:

PHOTO

NO SCALE

M500

1 BID SET 05/2026 JTH

5/15/2026

DIGESTER A DIGESTER B

DIGESTER C DIGESTER D

STORAGE

CENTRIFUGE

SUBMERSIBLE MIXER

POLYMER SKID

SEE PARTIAL BASEMENT

PLAN AT EL 266.33 -

NORTH/M509

SEE PARTIAL BASEMENT

PLAN AT EL 266.33 -

SOUTH/M511

SEE PARTIAL BASEMENT

PLAN AT EL 270.25 -

NORTH/M510

SEE PARTIAL BASEMENT

PLAN AT EL 270.25 -

SOUTH/M512

SEE CIVIL DWGS FOR CONTINUATION

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :0

A

M

M506

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

OVERALL BASEMENT PLAN

3/16" = 1'-0"

OVERALL BASEMENT PLAN

N

DIGESTER A DIGESTER B

DIGESTER C

DIGESTER D

HEAT EXCHANGER

ROOM

BOILER ROOM

LABORATORY

SUBMERSIBLE MIXER SHAFT, TYP

SAMPLE ROOM

AIRLOCK

CONTINUATION ON C032

CONTINUATION OF

PIPE WORK ON

SHEET C022

SEE ENLARGED MAIN FLOOR

PLAN/M513

SEE SECT D/M519

3' - 0" 3' - 0"

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :0

A

M

M507

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

OVERALL MAIN FLOOR PLAN

3/16" = 1'-0"

OVERALL MAIN FLOOR

N

DIGESTER A COVER, SEE NOTE 1

DIGESTER B COVER, SEE NOTE 1

DIGESTER C COVER, SEE NOTE 1 DIGESTER D COVER, SEE NOTE 1

EX CANOPY

EX CANOPY

S L O

P E

S L O

P E

S L O

P E

S

LO

P E

S L O

P E

4" DG

6" DG, SEE NOTE 4, TYP

SEE ENLARGED DIGESTER A

AND B ROOF PLAN/M514

SEE ENLARGED DIGESTER C

AND D ROOF PLAN/M515

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :0

A

M

M508

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

OVERALL ROOF PLAN

3/16" = 1'-0"

OVERALL ROOF PLAN

NOTES:

1. REPLACEMENT DIGESTER ROOF SHALL BE FURNISHED

BY THE ORIGINAL MANUFACTURER AND INSTALLED BY

THE CONTRACTOR

2. ALL EXPOSED GAS PIPING CONNECTIONS SHALL BE

GROOVED COUPLINGS UNLESS OTHERWISE SHOWN

ON THE DRAWINGS.

3. ALL GAS PIPING REDUCERS SHALL BE ECCENTRIC

WITH THE FLAT PART ON THE BOTTOM.

4. ALL EXPOSED GAS PIPING SHALL HAVE A MINIMUM

SLOPE OF 0.5% AND SLOPE TOWARDS DRIP TRAPS.

N

M516

A_______

M516

A_______

DIGESTER A DIGESTER B

THICKENED DIGESTED

SLUDGE PUMP

RECIRCULATION PUMP

6" RSD, CL 263.10±

6" RSD, CL 262.77±

6" DS, CL 260.29

6" RSD, CL 265.82

CENTRIFUGE

4" CV

HOPPER

6" RSD, CL 265.86

33-127-1

33-127-2

33-131-3

33-131-4

THICKENED DIGESTED

SLUDGE PUMP

RECIRCULATION PUMP

6" RSD, CL 263.67

6" RSD, CL 263.67

MATCHLINE - SEE DRAWING M511

PIPE GALLERY

EQUIPMENT PAD FOR MIXER, TYP

6" RSD, CL 263.74

6" RSD, CL 263.74

6" DS, CL 260.31

6" RSD, CL 263.74

6" DS, CL 265.90±

6" RSD, CL 263.67

6" DS, CL 260.50

6" RSD, CL 262.77±

CENTRIFUGE FEED

PUMP NO.1

CENTRIFUGE FEED

PUMP NO.2

33-126-2 33-126-1

6" PV

4" PV

4" TDS, CL 266.42±

4" PV

6" RSD, CL 263.67±

4" WAS, CL 262.31

6" RSD, CL 262.90±

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :0

A

M

M509

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

PARTIAL BASEMENT PLAN AT EL 266.33 - NORTH

N

3/8" = 1'-0"

PARTIAL BASEMENT PLAN AT EL 266.33 - NORTH

M516

M516

A_______

DIGESTER A DIGESTER B

RECIRCULATION PUMP, TYP

2" W1, CL 269.61±

2" W1, CL 270.25±

6" RSD, CL 269.17±

6" V, CL 269.75±

6" RSD, CL 269.17±

6" SU, CL 269.25±

6" DF, CL 269.42±

33-131-3

33-131-4

RECIRCULATION PUMP

MATCHLINE

SEE DRAWING M512

SUBMERSIBLE MIXER

6" SU, CL 269.25±

6" SU, CL 269.25±

6" SU, CL 269.25±

2" SA, CL 270.55

6" TDS, CL 268.08±

4" WAS, CL 268.13±

2" W1, CL 269.61±

6" RSD, CL 269.42±

6" RSD, CL 269.50±

4" WAS, CL 268.92±

3" HSR, CL 269.69

3" SL, CL 269.35

2" W1, CL 269.75±

2" W1, CL 270.33±

2" W1, CL 269.42±

2" W1, CL 270.25±

6" TDS, CL 267.54±

4" V, CL 270.75±

2" W1, CL 267.94±

6" RSD, CL 269.17±

6" SU, CL 269.25±

6" SU, CL 269.25

6" PV

6" RSD

6" RSD

6" TDS, CL 267.00

6" PV

4" TDS, CL 266.42±

4" PV

4" FM

FE-32A-130

6" x 4" RED, TYP

4" TDS, CL 268.08

2" SA, CL 270.30±

2" SA, CL 270.30±

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :0

A

M

M510

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

PARTIAL BASEMENT PLAN AT EL 270.25 - NORTH

N

3/8" = 1'-0"

PARTIAL BASEMENT PLAN AT EL 270.25 - NORTH

M519

D_______

M519

D_______

M517

B_______

M517

B_______

M518

C_______

M518

C_______

1" PRESSURE GAUGE WITH

DIAPHRAGM SEAL AND BALL

VALVE, TYP

TAPPING, TYP

3" D, CL 261.67±

6" RSD, CL 263.10±

3" RPZ ASSEMBLY

SLUDGE TRANSFER

PUMP

33-140-2

33-140-1

DIGESTER C DIGESTER D

MATCHLINE - SEE DRAWING M509

STORAGE

EQUIPMENT PAD FOR MIXER, TYP

6" PV, TYP

SLUDGE TRANSFER PUMP

6" TDS, CL 264.33±

4" W3, CL 265.01±

6" RSD, CL 262.82±

RECIRCULATION PUMP

RECIRCULATION PUMP

6" RSD, CL 263.67

6" RSD, CL 265.82

6" DS, CL 260.29

6" RSD, CL 263.67

3" W1, CL 265.63±

33-131-2

6" RSD, CL 265.91

6" RSD, CL 263.83

6" RSD, CL 263.83

6" RSD, CL 263.83

6" DS, CL 260.29

6" DS, CL 260.50

6" HARNESSED FLANGED

COUPLING ADAPTER

3" W1, CL 265.33±

2" SA, CL 266.05

STEEL TRUNK PIPE

6" DS, CL 260.50

POLYMER TOTE, TYP

6" TPS, CL 265.21

M-40-0111

FLUSHING

CONNECTION

M-40-0705

3" HSR, CL 266.04

6" BLIND FLANGE

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :0

A

M

M511

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

PARTIAL BASEMENT PLAN AT EL 266.33 - SOUTH

N

3/8" = 1'-0"

PARTIAL BASEMENT PLAN AT EL 266.33 - SOUTH

D_______

M519

D_______

M517

B_______

M518

C_______

M518

C_______

4" HARNESSED FLANGED

COUPLING ADAPTER, TYP

4" V, CL 269.58± 2" W1, CL 269.42±

3" W1, CL 267.25±

6" RSD, CL 269.25±

6" RSD, CL 268.50±

6" TDS, CL 269.25±

4" W1, CL 270.65±

2" SA, CL 268.32±

4" DS, CL 271.01±

6" RSD, CL 269.33±

4" V, CL 269.58±

6" SU, CL 269.25

3" HSR, CL 267.50

4" W3, CL 269.08±

DIGESTER C DIGESTER D

STORAGE

MATCHLINE - SEE DRAWING M510

2" SA, CL 270.15±

2" SA, CL 270.63±

33-131-1

6" SU, CL 269.25±

6" SU, CL 269.25±

6" SU, CL 269.25±

2" SA, CL 268.60

4" WAS, CL 268.13±

4" WAS, CL 268.75±

4" DS, CL 271.01±

2" W1, CL 269.42±

4" V, CL 270.75±

SUBMERSIBLE MIXER

3" W1, CL 270.38±

6" RSD, CL 267.42±

2" W1, CL 270.58±

2" W1, CL 269.42±

4" WAS, CL 268.75±

3" HSR, CL 269.69

6" PV

4" PV

6" PV

2" W1, CL 270.63±

RECIRCULATION PUMP, TYP

33-131-2

6" DS, CL 269.33±

6" DS, CL 267.83±

2" W1, CL 269.42±

6" RSD 6" RSD

SUBMERSIBLE MIXER

4" PV

3" SL, CL 268.78

4" WAS, CL 6.80

M517

B_______

6" TPS, CL 268.08

6" PV, TYP

6" SU, CL 269.25

4" WAS, CL 269.33

2" SA, CL 269.11±

2" SA, CL 270.30±

2" W3, CL 269.08±

2" SOLENOID VALVE

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :0

A

M

M512

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

PARTIAL BASEMENT PLAN AT EL 270.25 - SOUTH

N

3/8" = 1'-0"

PARTIAL BASEMENT PLAN AT EL 270.25 - SOUTH

E_______

M519

E_______

M519

D_______

M519

D_______

M516

A_______

M516

A_______

M517

B_______

M517

B_______

M518

C_______

M518

C_______

DIGESTER A

DIGESTER C

DIGESTER B

DIGESTER D

3" HSR, CL 279.00

2" SA, CL 276.88

2" SA, CL 272.28

BOILER NO. 1

BOILER NO. 2

6" SU, CL 270.05

6" SU, CL 270.05

6" SU, CL 270.05

6" SU, CL 270.05

6" SU, CL 270.05

6" SU, CL 270.05

6" RSD, CL 266.62

6" SU, CL 270.05 6" SU, CL 270.05

6" SU, CL 270.05

6" SU, CL 270.05±

6" RSD, CL 266.71

33-134-2

33-134-1

SAMPLE PUMP NO. 1

SAMPLE PUMP NO.2

33-135-1

33-135-2

2" SA, CL 272.48

2" BLV

SPIRAL HEAT

EXCHANGER A

SPIRAL HEAT

EXCHANGER C

SPIRAL HEAT

EXCHANGER B

SPIRAL HEAT

EXCHANGER D

33-132-1

33-132-3

33-132-3

33-132-1

3" SL, CL 278.00

3" HSR, CL 279.50

M520

G_______

3" HXS, CL 279.50

3" HXR, CL 279.50

3" HXR, CL 280.00

3" HXR, CL 280.00

3" HXS, CL 279.50

3" HWR, CL 280.59 3" HWS, CL 281.12

3" HWS, CL 281.12

3" HWR, CL 280.72

SUBMERSIBLE MIXER, TYP

MIXER POWDER AND

CONTROL PANEL, TYP OF 4

TYPM-40-0114

3" HXS, CL 280.50

M520

F_______

3" HXS, CL 280.50

BOILER MASTER

CONTROL PANEL

3" HXS, CL 280.50

3" HXR, CL 279.50

4" HWS, CL 281.12

10" EXHAUST STACK,

SEE NOTE 1, TYP

3" CV

TO W3

TO HVAC

M520

F_______

GAS TRAIN

GAS TRAIN

6" DG, CL 279.50

3" DG, CL 279.50

3" DG, CL 279.50

2" SA, CL 2.11

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :1

A

M

M513

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED MAIN FLOOR PLAN

N

3/8" = 1'-0"

ENLARGED MAIN FLOOR PLAN

1. BOILER EXHAUST VENT TO BE LOCATED A MINIMUM OF

10' FROM DIGESTER WALL. CONTRACTOR TO BE

RESPONSIBLE FOR EQUIPMENT AND PIPING

MODIFICATIONS NECESSARY TO ACCOMODATE

ALTERNATIVE BOILER SYSTEM EQUIPMENT.

NOTES:

M522

K_______

M522

K_______

M524

N_______

M524

N_______

M521

H_______

M521

H_______

M521

J_______

M521

J_______

M523

M_______

M523

M_______

M523

L_______

M523

L_______

DIGESTER A COVER, SEE NOTE 1

DIGESTER B COVER, SEE NOTE 1

EX CANOPY

DRIP TRAP

SEE NOTE 2

SEDIMENT TRAP

S L O

P E

S

LO

P E

4" PV

4" DG

6" PV, TYP

6" DG, SEE NOTE 4, TYP

4" PV

4" DG

6" CV

MXR-32A-130-1

LE/LT-32A-130-2

MXR-32B-130-1

LE/LT-32B-130-2

4" DG, CL 282.02

, SEE NOTE 4, TYP

6" PV

6" DG, CL 290.36

6" DG, CL 281.97

6" DG, CL 282.02

EMERGENCY VENT, TYP

2" D, CL 287.92

FOAM SEPARATOR

6" DG, CL 280.27

MATCHLINE - SEE DRAWING M515

SEDIMENT TRAP

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :1

A

M

M514

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED DIGESTER A AND B ROOF PLAN

NOTES:

1. REPLACEMENT DIGESTER ROOF SHALL BE FURNISHED

BY THE ORIGINAL MANUFACTURER AND INSTALLED BY

THE CONTRACTOR

2. ALL EXPOSED GAS PIPING CONNECTIONS SHALL BE

GROOVED COUPLINGS UNLESS OTHERWISE SHOWN

ON THE DRAWINGS.

3. ALL GAS PIPING REDUCERS SHALL BE ECCENTRIC

WITH THE FLAT PART ON THE BOTTOM.

4. ALL EXPOSED GAS PIPING SHALL HAVE A MINIMUM

SLOPE OF 0.5% AND SLOPE TOWARDS DRIP TRAPS.

N

1/4" = 1'-0"

ENLARGED DIGESTER A AND B ROOF PLAN

M525

Q_______

M525

Q_______

M522

K_______

M522

K_______

M521

H_______

M521

H_______

M521

J_______

M521

J_______

M524

P_______

M524

P_______

DIGESTER C COVER, SEE NOTE 1 DIGESTER D COVER, SEE NOTE 1

EX CANOPY

TO BOILER ROOM

GAS COLLECTION PIPING,

HIGH POINT

DUAL PRESSURE

VACUUM RELIEF VALVE

AND FLAME TRAP

ASSEMBLY WITH SAFETY

SELECTOR VALVE, TYP

VIEW PORT

INSPECTION COVER,

TYP

MANHOLE COVER, TYP

SAMPLE PORT, TYP

S L O

P E

FOAM SEPARATOR

S L O

P E

S L O

P E

6" PV, TYP

GAS COLLECTION PIPING,

HIGHPOINT

4" PV

6" DG, CL 290.36

6" PV, TYP

4" DG, CL 287.47

4" PV

RADAR LEVEL SENSOR, TYP

PRESSURE REDUCING VALVE

MXR-32D-130-1

LE/LT-32D-130-2

MXR-32C-130-1

LE/LT-32C-130-2

4" DG, CL 282.02

, SEE NOTE 4, TYP

6" DG, CL 281.97

EMERGENCY VENT, TYP

MATCHLINE - SEE DRAWING M514

6" DG, CL 284.66

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :1

A

M

M515

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED DIGESTER C AND D ROOF PLAN

NOTES:

1. DIGESTER ROOF SHALL BE SUPPLIED BY

MANUFACTURER.

2. ALL EXPOSED GAS PIPING CONNECTIONS SHALL BE

GROOVED COUPLINGS UNLESS OTHERWISE SHOWN

ON THE DRAWINGS.

3. ALL GAS PIPING REDUCERS SHALL BE ECCENTRIC

WITH THE FLAT PART ON THE BOTTOM.

4. ALL EXPOSED GAS PIPING SHALL HAVE A MINIMUM

SLOPE OF 0.5% AND SLOPE TOWARDS DRIP TRAPS.

N

1/4" = 1'-0"

ENLARGED DIGESTER C AND D ROOF PLAN

CENTRIFUGE

RECIRCULATION PUMP, TYP

THICKENED DIGESTED

SLUDGE PUMP, TYP

6" RSD

CL 269.50±

6" V

CL 269.75±

6" RSD

CL 269.17±

4" TDS

CL 262.30

EL 261.50

2" SA

CL 271.71

2" SA

CL 274.80

2" SA

CL 275.98

2" SA

CL 276.38

4" GV-SK, TYP

6" DF

CL 269.42±

6" TDS

CL 267.54±

6" RSD

CL 269.17±

6" RSD

CL 260.50±

3" HXR

CL 280.00

CENTRIFUGE FEED

PUMP NO.2

33-126-2

AIRLOCK

HEAT EXCHANGER

ROOM

SAMPLE ROOM

PIPE GALLERY

2" SA

CL 274.01

3" CV, TYP

SPIRAL HEAT

EXCHANGER, SPIRAL

HEAT EXCHANGER A

33-132-1

3" HXS

3" SL

CL 278.00

SPIRAL HEAT

EXCHANGER, SPIRAL

HEAT EXCHANGER B

3" CV, TYP

33-132-1

SAMPLE PUMP NO. 1

33-135-1

6" TDS

CL 267.00 4" TDS

CL 266.42

CENTRIFUGE FEED

PUMP NO.2

33-126-2

4" PV

6" PV

4" PV

3" HXR

3" HXS

3" HSR

3" HSR

3" SL

3" HSR

CL 269.69

33-127-2

33-131-4

33-131-3

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :1

A

M

M516

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

OVERALL SECTIONS - SHEET 1

SECTION

1/2" = 1'-0" M509

A

6" RSD

CL 268.50±

6" RSD

CL 267.42±

EL 258.50

EL 271.50

6" TDS

CL 267.54±

6" RSD

CL 269.42±

6" TDS

CL 264.33±

3" SL

CL 278.00

4" WAS

CL 268.75±

6" RSD

CL 269.50±

4" RSD

CL 263.83±

4" RSD

CL 263.83±

3" D

CL 261.67±

6" RSD

CL 260.50±

6" RSD

CL 262.82±

6" RSD

CL 269.25±

HEAT EXCHANGER

ROOM

PIPE GALLERY

33-131-1 33-131-2

3" CV

EL 261.50

CENTRIFUGE FEED

PUMP NO.1

33-126-1

SPIRAL HEAT

EXCHANGER A SPIRAL HEAT

EXCHANGER C

33-132-1

33-132-3

3" HXS

CL 279.50

3" HXR

CL 280.00

3" HXR

CL 280.00

6" TDS

CL 267.00

6" PV 4" PV

6" TPS

CL 265.21

M-40-0111

FLUSHING

CONNECTION

M-40-0705

6" TPS

CL 268.08

3" HSR

CL 267.50

6" BLIND FLANGE, TYP

ELECTRICAL EQUIPMENT,

SEE ELEC DWGS

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :1

A

M

M517

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

OVERALL SECTIONS - SHEET 2

SECTION

1/2" = 1'-0" M511

B

CL 260.50±

6" RSD

CL 267.42±

6" RSD

CL 268.50±

6" RSD

CL 269.25±

6" RSD

CL 262.82±

3" W1

CL 265.63±

EL 261.50

4" PV, TYP

4" PV, TYP

3" RPZ

3" HSR

CL 267.50

6" RSD

CL 262.82±

3" W1

CL 267.25±

3" W1

CL 264.75±

4" FM, TYP

4" RSD

CL 263.83±

EL 260.00

6" BF

33-131-2 33-131-1

6" TPS

CL 268.08

3" SL

CL 268.78

3" HSR

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :1

A

M

M518

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

OVERALL SECTIONS - SHEET 3

SECTION

1" = 1'-0" M511

C

GROUND EL 270.00 ± CONTINUATION TO

FLARE

GROUND EL 268.50 ±

PRESSURE AND VACUUM RELIEF

VALVE C/W FLAME TRAP AND SAFETY

SELECTOR VALVE ASSEMBLY, TYP

4" PV

CENTRIFUGE

6" PV, TYP

THERMAL MASS

FLOW METER, TYP

6" PV, TYP

FOAM SEPARATOR

DRIP TRAP

6" CV, TYP

6" CV, TYP

TO PLANT DRAIN

6" DG

CL 282.02

2" D

CL 273.12

6" DG

CL 290.36

4" D

CL 287.92

4" DG

CL 282.02

MIXER SERVICE BOX

EL 258.50

6" DG

CL 285.75

MXR-32A-130-1

_M526

HEAT EXCHANGER

ROOM

AIRLOCK SAMPLE ROOM

PIPE GALLERY

2" GAS

CL 265.40±

EL 283.50

SPIRAL HEAT

EXCHANGER D

SPIRAL HEAT

EXCHANGER C

33-132-333-132-3

CENTRIFUGE FEED

PUMP NO.1

CENTRIFUGE FEED

PUMP NO.2

33-126-2

33-126-1

_M527

2" D

CL 260.20±

PRESSURE AND VACUUM RELIEF

VALVE C/W FLAME TRAP AND SAFETY

SELECTOR VALVE ASSEMBLY, TYP

EX GROUND EL 269.00 ±

EL 258.50

MIXER SERVICE BOX

4" DG

CL 287.47±

DIGESTER A COVERDIGESTER C COVER

6" DG

CL 275.40±

6" PV, TYP

1" BV

2" BV

2" D

CL 272.15

4" DG

CL 282.02±

2" D

CL 277.84±

6" DG

CL 280.27±

2" CV

DRIP TRAP

EX GROUND EL 270.00 ±

_M528

LOCKER ROOM

HEAT EXCHANGER

ROOM

PIPE GALLERY

PIPE GALLERY

MXR-32A-130-1

MXR-32C-130-1

MIXER SERVICE BOX

EL 283.50

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :2

A

M

M519

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

OVERALL SECTIONS - SHEET 4

1. CONTRACTOR SHALL INSTALL MICROBIOLOGICALLY

INDUCED CORROSION (MIC) EPOXY COATING SYSTEM

ON INTERIOR CONCRETE WALLS SURFACES WITHIN

THE DIGESTERS. REFERENCE CONTRACT

SPECIFICATION SECTION 09 96 59 FOR MIC COATING

REQUIREMENTS. MIC COATING SYSTEM SHALL BE

INSTALLED FROM 12 INCHES BELOW THE MINIMUM

OPERATING LEVEL TO THE TOP OF THE DIGESTER

WALLS AT ELEVATION 283.50 INCLUDING CONCRETE

CORBELS TO REMAIN.

NOTES:

SECTION

1/4" = 1'-0" M511

D

SECTION

1/4" = 1'-0" M513

E

EL 271.50

3" HXS

CL 280.50

2" CV-PB, TYP

2" BLV, TYP

1" BLV, TYP

DIGESTER HEATING

WATER PUMP NO. 4

33-248-6

DIGESTER HEATING

WATER PUMP NO. 3

33-1248-5

3-WAY MIXING VAVLE

DIGESTER HEATING

WATER PUMP NO. 1

DIGESTER HEATING

WATER PUMP NO. 2

33-248-4

2" HWS

CL 273.30

2" HWS

CL 276.34

33-248-3

HOT WATER

RECIRCULATING

PUMP NO. 1

HOT WATER

RECIRCULATING

PUMP NO. 2

33-248-2

33-248-1

3" CV-PB, TYP

3" BLV, TYP

1" BLV, TYP

3" HWS

CL 277.14

3" HWS

CL 273.30

3" HWS

CL 281.12

3" HWR

CL 280.72

3" HWR

CL 279.92

3" HXR

CL 279.50

2" HXS

CL 273.30

2" HXS

CL 276.34

3" HWS

CL 277.75

TO W3

NOTE 1, TYP

EQUIPMENT PAD,

SEE DETAIL

S-03-0507, TYP

BOILER ROOM

3" HWS

CL 277.75

3" HXS

CL 280.50

EL 271.50

BOILER NO. 2

33-134-2

3-WAY MIXING VAVLE

3" HWS

3" HWR

CL 280.72

1" BLV, TYP2" BLV, TYP

2" CV-PB, TYP

3" HXS

DIGESTER HEATING

WATER PUMP NO. 1

DIGESTER HEATING

WATER PUMP NO. 2

33-248-4

33-248-3

2" HXS

CL 273.20

2" HWS

CL 276.34

2" HWS

CL 273.20

HOT WATER RECIRCULATING

PUMP NO. 2

33-248-2

HOT WATER RECIRCULATING

PUMP NO. 1

33-248-1

2" HXS

CL 276.34

3" HWS

CL 281.12

3" HWR

CL 280.59

3" HXR

3" HWS

TYPM-40-0114

3" HWS

CL 278.50

3" HWR

2 1/2" HWS

3" DG

CL 279.50

GAS TRAIN

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :2

A

M

M520

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 1

SECTION

3/4" = 1'-0" M513

F

SECTION

3/4" = 1'-0" M513

G

1. PROVIDE WALL MOUNTED BRACKET SUPPORT OR

FABRICATED FLOOR STAND FOR PUMPS WITH A

CENTERLINE GREATER THAN 3' OFF THE FLOOR.

NOTES:

TO PLANT DRAIN

6" PV, TYP

FOAM SEPARATOR

DRIP TRAP

4" DG

CL 287.474" DG

CL 287.47

4" DG

CL 282.02

MANHOLE COVER, TYP

VIEW PORT INSPECTION COVER, TYP

EMERGENCY VENT AND

MANHOLE COVER, TYP

MIXER SERVICE BOX

SAMPLE PORT, TYP

DIGESTER C COVER

RADAR LEVEL SENSOR, TYP

DIGESTER A COVER

6" DG

CL 280.27

MXR-32C-130-1

MXR-32A-130-1

MIXER SERVICE BOX

EX GROUND EL 269.00 ±

EX GROUND EL 270.00 ±

6" DG

CL 275.40

EL 283.50

DUAL PRESSURE VACUUM RELIEF

VALVE AND FLAME TRAP ASSEMBLY

WITH SAFETY SELECTOR VALVE, TYP

CENTRIFUGE

EL 261.50

EL 258.50

EX GROUND EL EL 267.00 ±

EX GROUND EL 266.00 ±

_M529

EL 271.50

HEAT EXCHANGER

ROOM

LABORATORY BOILER ROOM

STORAGEPIPE GALLERY

POLYMER TOTE, TYP

EL 255.25

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :2

A

M

M521

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 2

SECTION

1/4" = 1'-0" M514

H

SECTION

1/4" = 1'-0" M514

J

CONTINUATION

TO FLARE

GROUND EL 269.00 ±

GROUND EL 266.00 ±

6" PV, TYP

THERMAL MASS FLOW

METER, TYP

6" PV, TYP

6" CV, TYP

6" DG

CL 282.02

6" DG

CL 290.36

4" DG

CL 287.47

TO PLANT DRAIN

EMERGENCY VENT AND

MANHOLE COVER, TYP

SAMPLE PORT, TYP

DIGESTER B COVER

RADAR LEVEL SENSOR, TYP

6" DG

CL 282.02

DIGESTER D COVER

6" DG

2" D

2" PV

FE/FIT-33-474-1

FE/FIT-33-474-3

MXR-32B-130-1MXR-32D-130-1

2" D

CL 273.12

MIXER SERVICE BOXMIXER SERVICE BOX

EL 283.50

DUAL PRESSURE VACUUM RELIEF

VALVE AND FLAME TRAP ASSEMBLY

WITH SAFETY SELECTOR VALVE, TYP

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :3

A

M

M522

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 3

SECTION

3/8" = 1'-0" M514

K

6" DG

CL 290.36

MANHOLE COVER, TYP

SAMPLE PORT, TYP

RADAR LEVEL METER, TYP

VIEW PORT

INSPECTION COVER,

TYP

DIGESTER B COVER

MIXER SERVICE BOX

6" DG

CL 282.02

FOAM SEPARATOR

MXR-32B-130-1

4" PV, TYP

4" D

CL 287.92

GROUND EL 267.00 ±

6" PV, TYP

DUAL PRESSURE VACUUM RELIEF

VALVE AND FLAME TRAP ASSEMBLY

WITH SAFETY SELECTOR VALVE, TYP

4" DG

CL 282.02

4" DG

CL 287.47

FOAM SEPARATOR

SEDIMENT TRAP

6" PV, TYP

DIGESTER A COVER

CONTINUATION ON C032

MXR-32A-130-1

2" D

CL 272.15

2" D

CL 270.24

MIXER SERVICE BOX

GROUND EL 270.00 ±

6" DG

CL 280.27

4" PV, TYP

EL 283.50

DUAL PRESSURE VACUUM RELIEF

VALVE AND FLAME TRAP ASSEMBLY

WITH SAFETY SELECTOR VALVE, TYP

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :3

A

M

M523

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 4

SECTION

3/8" = 1'-0" M514

M SECTION

3/8" = 1'-0" M514

L

SUBMERSIBLE MIXER SHAFT

HOUSING SERVICEBOX

VIEW WINDOW

OPENING FOR MIXER POWER

AND CONTROL CORD

HEIGHT ADJUSTMENT

REMOVABLE FLOOR PANEL

SAMPLE PORT

HANDLES

OPTIONAL GAS CONNECTION

DIGESTER B COVER

EQUIPMENT PAD

4" DG

CL 287.47

6" DG

CL 281.97

GROUND EL 269.00 ±

EL 258.50

EL 271.92

EL 279.26

6" RSD

CL 265.82

6" RSD

CL 263.67

SUBMERSIBLE MIXER

MIXER SERVICE BOX

MXR-32C-130-1

4" PV, TYP

PRESSURE AND VACUUM

RELIEF VALVE C/W FLAME

TRAP AND SAFETY

SELECTOR VALVE ASSEMBLY

LE/LT-32C-130-2

RADAR LEVEL

SENSOR

MANHOLE COVER, TYP

DIGESTER C

EL 270.30

MINIMUN OPERATING WATER LEVEL

EL 277.42

NORMAL OPERATING WATER LEVEL

EL 277.92

EL 274.92

DIGESTER OVERFLOW

DIGESTER INFLUENT

SLUDGE WITHDRAW LINE

EL 281.00

HIGH WATER LEVEL

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :3

A

M

M524

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 5

SECTION

1/2" = 1'-0" M514

N

SECTION

1/2" = 1'-0" M515

P

EL 258.50

EL 271.92

EL 278.45

6" RSD

CL 263.67

EL 278.45EL 278.25

6" RSD

CL 263.83

SEE STRUCTURAL DETAIL

S-03-0507

TYP OF ALL DIGESTERS

GROUND EL 269.00 ±

MXR-32C-130-1

PRESSURE AND VACUUM RELIEF

VALVE C/W FLAME TRAP AND SAFETY

SELECTOR VALVE ASSEMBLY, TYP

MIXER SERVICE BOX

RADAR LEVEL SENSOR

LE/LT-32C-130-2

MXR-32D-130-1

MIXER SERVICE BOX, TYP

3" W1

CL 270.38±

3" HSR

CL 267.50

RECIRCULATION PUMP, TYP

6" RSD

CL 262.82±

SUBMERSIBLE MIXER,

TYP

GROUND EL 266.00 ±

DIGESTER D

BOILER ROOM

DIGESTER C

STORAGE

HEAT EXCHANGER

ROOM

PIPE GALLERY

4" PLUG VALVE

4" PLUG VALVE

EL 283.50

MIC COATING,

SEE NOTE 1, TYP

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :3

A

M

M525

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 6

SECTION

1/4" = 1'-0" M515

Q

EL 258.50

2" SA

CL 280.96

6" TDS

CL 267.54±

6" RSD

CL 269.33±

4" WAS

CL 268.75±

6" RSD

CL 269.25±

4" V

CL 270.75±

4" V

CL 269.58±

3" W1

CL 267.25±

6" RSD

CL 263.67±

2" W1

CL 269.42±

2" W1

CL 270.58±

2" W1

CL 270.25±

M A

T C

H L

IN

E

S

E E

D R

A W

IN

G

M

6" HARNESSED

FLANGED COUPLING

ADAPTER

3" HXS

CL 280.50

2" SA

CL 280.96

3" CV, TYP

2" W1

CL 270.33±

4" WAS

CL 268.75±

2" SA

CL 266.05

8" SU

CL 259.67±

HEAT EXCHANGER

ROOM

PIPE GALLERY

3" CV, TYP

TYPM-40-0100

SPIRAL HEAT

EXCHANGER C

33-132-3

SPIRAL HEAT

EXCHANGER D

33-132-3

CENTRIFUGE FEED PUMP NO.1

4" PV

4" PV

6" PV

CENTRIFUGE FEED PUMP NO.2

33-126-2

33-126-1

4" TDS

CL 266.42

6" TDS

CL 267.00

6" TDS

6" PV

6" RSD

CL 260.50±

6" RSD

CL 260.88±

3" HXR

CL 279.503" HXS

CL 279.50

3" HXR

CL 280.00

3" HSR

CL 272.83

6" PV-MOV

2" SA

CL 264.87

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :3

A

M

M526

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 7

DETAIL

NTS M519

M A

T C

H L

IN

E

S

E E

D R

A W

IN

G

M

CONTINUATION TO

FLARE

SAMPLE SINK

6" PV, TYP

THERMAL MASS

FLOW METER, TYP

6" CV, TYP

TO PLANT DRAIN

6" DG

CL 282.02±

2" D

CL 273.12

2" SA

CL 269.13±

2" SA

CL 268.32±

4" V

CL 270.75±

2" W1

CL 269.42±

6" RSD

CL 259.50±

4" WAS

CL 260.60±

EL 258.50

2" SA

CL 276.38

2" SA

CL 275.59

2" SA

CL 274.80

2" SA

CL 271.71

SAMPLE PUMP NO.2

2" W1

CL 270.33±

6" DS

CL 269.33±

6" PV

4" WAS

CL 267.83±

4" TDS

CL 262.30

3" FM

2" SA

CL 280.96

2"

CL 271.82

EL 261.50

EL 271.50

M-40-0111

6" PV

33-135-1

2" BLV

2" SA

CL 275.98

2" SA

CL 274.40

SAMPLE PUMP NO.2

33-135-2

SAMPLE ROOM

HEAT EXCHANGER

ROOM

PIPE GALLERY

EX GROUND EL 267.00 ±

AIRLOCK

CENTRIFUGE

6" DS

CL 260.94±

6" DS

CL 260.93±

FE-33-125

2" D

CL 260.20

CONTINUATION ON C032

SA

2" SA

CL 277.77

6" SU

CL 269.25

2" SA

CL 278.28

2" SA

CL 270.30±

2" SA

CL 270.83± 2" SA

CL 270.30±

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :4

A

M

M527

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 8

DETAIL

NTS M519

CL 269.25±

6" DF

CL 269.42±

6" TDS

CL 268.16±

2" SA

CL 268.60

6" RSD

CL 263.67±

6" RSD

CL 260.55±

6" DS

CL 260.50

3" RPZ ASSEMBLY

3" PRESSURE GAUGE WITH

DIAPHRAGM SEAL AND BALL

VALVE

CENTRIFUGE FEED PUMP NO.2

3" CV, TYP

3" CV, TYP

EL 271.50

EL 261.50

33-126-2

33-132-1 33-132-3

SPIRAL HEAT

EXCHANGER C SPIRAL HEAT

EXCHANGER A

3" HXS

CL 279.50

3" HXR

3" SL

3" SL

3" HXS

6" PV, TYP

4" TDS

6" TDS

TYPM-40-0100

6" x 4" RED

6" TDS

CL 267.00

6" PV

4" PV

2" SA

3" HSR

CL 267.50

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :4

A

M

M528

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 9

DETAIL

NTS M519

CENTRIFUGE

3" FM

6" PV

6" PV, TYP

THICKENED DIGESTED

SLUDGE PUMP

3" HSR

CL 269.69

6" RSD

CL 269.17±

6" RSD

CL 265.48±

2" W1

CL 270.63±

6" DS

CL 269.33±

2" W1

CL 269.42±

6" DS

CL 267.83±

SLUDGE TRANSFER PUMP

33-127-1

3" SL

CL 269.35

4" PV

33-140-2

6" HFCA

6" RSD

CL 262.77±

RECIRCULATION PUMP, TYP

33-131-3 33-131-4

EL 261.50

EL 271.50

6" PV

4" WAS

CL 268.30

FE-33-125

8" SU

CL 259.67±

6" RSD

CL 260.50±

6" RSD

CL 259.50±

6" RSD

CL 259.37±

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W

P C

F S o lid s P ro c e s s in g I m p P h I /3

-0

-5

-D G

B -M

.r v t

/8

/2

:4 :4

A

M

M529

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE

DIGESTER BUILDING AND DIGESTERS

MECHANICAL

ENLARGED SECTIONS - SHEET 10

DETAIL

NTS M521

PHOTO 1

M550

PHOTO 3

M550

PHOTO 2

M550

PHOTO 3

M550

PHOTO 1

M550

PHOTO 2

M550

PHOTO 2

M550

WASTE GAS BURNER

WASTE GAS BURNER

FOUNDATION

WASTE GAS BURNER

WASTE GAS BURNER

FOUNDATION

BELOW GRADE PIPING, TYP

CAP AND PROTECT PIPING

AND DRIP TRAP INSIDE VAULT

WITH BLIND FLANGE

CAP AND PROTECT PIPING AND

DRIP TRAP INSIDE VAULT WITH

BLIND FLANGE

ACCESS HATCH AND VAULT TO

REMAIN

REMOVE WASTE GAS BURNER

REMOVE WASTE GAS BURNER FOUNDATION

REMOVE PIPING AND EQUIPMENT

INSIDE OF VAULT IN ACCORDANCE

WITH THE EXTENTS SHOWN

CAP AND PROTECT PIPING AND DRIP

TRAP INSIDE VAULT WITH BLIND

FLANGE

VAULT TO REMAIN

REMOVE WASTE GAS BURNER

VAULT AND ACCESS HATCH TO REMAIN

REMOVE CONTROL PANEL AND

SUPPORT STRUCTURE

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

Au to de sk

D oc s:

//3

-0

_W

PC

F So lid s

Pr oc es si ng Im p Ph

I/

1-

8-

0-

W G

F- M

.rv t

5/

/2

:2 3:

P

M

M550

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE DIGESTER BUILDING AND DIGESTERS WASTE GAS

FLARE

CIVIL

DEMOLITION - PLAN, SECTION, AND PHOTOS

NOT TO SCALE

WASTE GAS BURNER DEMOLITION

PHOTO

NO SCALE

M550

PHOTO

NO SCALE

M550

PHOTO

NO SCALE

M550

GENERAL DEMOLITION NOTES:

1.

2.

3.

4.

5.

6.

7.

CONTRACTOR TO COORDINATE ALL DEMOLITION

WORK WITH THE OWNER.

CONTRACTOR SHALL VERIFY LOCATIONS OF ALL

EQUIPMENT PIPING AND ACCESSORIES PRIOR TO

DEMOLITION.

PATCH OPENINGS IN SURFACES DUE TO REMOVAL OF

EQUIPMENT, ANCHOR BOLTS, CONDUITS, OR PIPE PER

SPECIFICATION. PREPARE SURFACE AND PAINT TO

MATCH SURROUNDING SURFACE.

PROTECT IN PLACE ALL PIPING, SUPPORT VALVES,

INSTRUMENTS, ELECTRICAL CONDUITS, OR

APPURTENANCES NOT DESIGNATED FOR DEMOLITION.

REPLACE IN KIND ALL ITEMS DAMAGED DURING

DEMOLITION AT NO COST TO THE OWNER.

THE DEMOLITIONS DRAWINGS ARE BASED ON A

RECORD DRAWINGS "WATER POLLUTION CONTROL

FACILITY UPGRADE AND EXPANSION: VOLUME 3"

DATED 1992, REVISED 1995. NEITHER THE OWNER NOR

ENGINEER ASSUME RESPONSIBILITY FOR THE

ACCURACY OF RECORD DRAWINGS.

REMOVE ALL ITEMS DESIGNATED FOR DEMOLITION

INCLUDING ANCILLARY ITEMS SUCH AS INSULATION,

JACKETING, SUPPORTS, ANCHORS, INSTRUMENTS

AND APPURTENANCES.

CONTRACTOR SHALL TAKE BEFORE AND AFTER

PHOTOS OF ALL DEMOLITION ACTIVITIES.

CONTRACTOR SHALL ENSURE PHOTOS ARE TAKEN

BEFORE ANY BACKFILLING. PHOTOS SHALL BE

TURNED OVER TO OWNER AFTER DEMOLITION

ACTIVITIES ARE COMPLETE.

1 BID SET 05/2026 JTH

112 342

BOLLARD, TYP.

SEE CIVIL DWG

DETAILS

FENCE, TYP

FLARE MAINFOLD

VALVE AND REGULATOR

PACKAGE

FLAME TRAP ASSEMBLY

DRAIN CONNECTIONS TO VAULT

8'

0"

18' - 2"

EQUIPMENT SKID TO SIT

ON TOP OF EQUIPMENT

PAD, SEE NOTE 1

WASTE GAS BURNER

4' - 6"

4'

6" 4'

6"

4' - 6"

M551

A_______ M551

A_______

FENCE GATE

DRIP TRAP, BELOW

S-03-0508

DRIP TRAP

37-133

27' - 2"

ELEC EQPT, SEE ELEC DWGS

WASTE GAS BURNER

SEE NOTE 1

VALVE & REGULATOR PACKAGE

DRAIN CONNECTION

FLAME TRAP

TRAP

ASSEMBLY

FLARE MAINFOLD

PILOT, PROCESS, AND

DRAIN PIPING

DRIP TRAP

EL 290.05290.00

DRIP TRAP

EQUIPMENT SKID TO SIT

ON TOP OF EQUIPMENT

PAD, SEE NOTE 1

CLEAN OUT PIPE

2'

0"

EL 268.50

HDPE FLANGE SS

BACKING RING

SS

HDPE

6" DG, CL 262.00

SEE CON'T ON DWG C022

1" GAS, CL 261.78

SEE CON'T ON DWG C022

2" D, CL 261.50

CONT. ON DWG C022

37-133

S-03-0508

6" DG, CL 262.00

SEE CON'T ON DWG C022

1" GAS, CL 261.78

SEE CON'T ON DWG C022

2" D, CL 261.50

CONT. ON DWG C022

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

Au to de sk

D oc s:

//3

-0

_W

PC

F So lid s

Pr oc es si ng Im p Ph

I/

1-

8-

0-

W G

F- M

.rv t

5/

/2

:2 3:

P

M

M551

J. ALIANGAN

M. MAZZOCHETTE

P. VAVONESE DIGESTER BUILDING AND DIGESTERS WASTE GAS

FLARE

MECHANICAL

PLAN AND SECTION

NOTES:

1.

2.

WASTE GAS FLARE AND APPURTENANCES TOP BE

PROVIDED AS A PACKAGE. REFER TO SPECIFICATIONS

FOR LIMITS OF SUPPLY SYSTEM SUPPLIER.

CONTRACTORS TO COORDINATE WITH THE SUPPLIER

AND MODIFY ARRANGEMENT AS NECESSARY FOR THE

APPROVED SYSTEM AND SUBMIT CHANGES FOR

REVIEW.

1/2" = 1'-0"

WASTE GAS BURNER PLAN

N

SECTION

1/2" = 1'-0" M551

A

1 BID SET 05/2026 JTH

113 342

M600

M600

A_______

CLASS I, DIV 1

CLASS I, DIV 2

LEGEND:

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

Au to de sk

D oc s:

//3

-0

_W

PC

F So lid s

Pr oc es si ng Im p Ph

I/

1-

8-

0-

D

ST

A- M

.rv t

5/

/2

4:

:5

PM

M600

J. ALIANGAN

M. MAZZOCHETTE

M. MAZZOCHETTE

DIGESTED SLUDGE STORAGE TANK A

MECHANICAL

AREA CLASSIFICATION PLAN AND SECTION

N

1/4" = 1'-0" 1 1 3 7'0 2

1/4" = 1'-0"

CLASSIFICATION PLAN

SECTION

1/4" = 1'-0" M600

A

SPACE CLASSIFIED PER NFPA-820-2024

EDITION AS FOLLOWS:

CLASS I, DIVISION 1 AREAS:

1. SLUDGE-BLENDING TANKS AND HOLDING WELLS

TABLE 6.2.2(a), ROW 11, LINE a

ENCLOSED - ENTIRE SPACE

HAZARDOUS AREAS:

1 BID SET 05/2026 JTH

114 342

M602

B_______

M602

B_______

M602

C_______

M602

C_______

EX 42' Ø STEEL TANK

NOZZLE ASSEMBLIES, TYP

SEE NOTE 1

SLOPE

SLOPE

SL

O

PE

8" DS, CL 260.25, SEE CIVIL

FOR CONTINUATION

10" DS, CL 260.25, SEE CIVIL

FOR CONTINUATION

.8

SL

O

PE

.8

TYP

5' - 8"

EX LADDER W/ SAFETY

CAGE, SEE NOTE 3, TYP

EX INTERMEDIATE PLATFORM

FOR PIPE

PENETRATION,

SEE NOTE 5 AND

DETAIL 1/M601, TYP

8" DS, CL 270.13

8" DS, CL 266.83

4' - 0"

5°

2'

2'

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

Au to de sk

D oc s:

//3

-0

_W

PC

F So lid s

Pr oc es si ng Im p Ph

I/

1-

8-

0-

D

ST

A- M

.rv t

5/

/2

4:

:5

PM

M601

J. ALIANGAN

M. MAZZOCHETTE

M. MAZZOCHETTE

DIGESTED SLUDGE STORAGE TANK A

MECHANICAL

PLAN

1/4" = 1'-0"

PLAN

N

1/4" = 1'-0" 1 1 3 7'0 2

NOTES:

1.

2.

3.

4.

5.

NOZZLE ASSEMBLIES DESIGNED AND SUPPLIED BY

PUMP MIXING SYSTEM MANUFACTURER.

EXISTING TANK FILL, DRAW, OVERFLOW, AND

DRAINAGE PIPING IS NOT SHOWN FOR CLARITY.

PROVIDE EACH TANK ROOF ACCESS LADDER WITH A

LADDER SAFETY SYSTEM IN ACCORDANCE WITH

SPECIFICATION 05 51 33.

ALL EXPOSED SLUDGE PIPING SHALL BE INSULATED

AND HEAT TRACED ACCORDING TO SPECIFICATION 40

41 13 - HEAT TRACING SYSTEMS.

CONTRACTOR SHALL FIELD LOCATE PIPE

PENETRATIONS TO ENSURE DS PIPES PENETRATING

TANK WALL CENTERED BETWEEN TANK PANEL

SEAMS. ONE TANK TALL PENETRATION SHALL BE

PERMITTED PER TANK WALL.

1 BID SET 05/2026 JTH

115 342

EL 265.75

EL 259.50 EL 260.00

NOZZLE ASSEMBLIES, TYP

SEE NOTE 1

42' DIA. STEEL TANK

TYP

5' - 6 1/2"

EL 295.75

EL 265.75

EX LADDER W/ SAFETY

CAGE, SEE NOTE 3/M600, TYP

EX INTERMEDIATE PLATFORM

EL 265.75

NOZZLE

ASSEMBLIES, TYP

SEE NOTE 1

EX 42' Ø STEEL TANK, SEE NOTE 4

EL 298.75

EL 295.75

EL 259.50

EL 260.00

10"

8" DS, CL 260.25

SEE CIVIL FOR CONTINUATION

10" DS, CL 260.25

SEE CIVIL FOR CONTINUATION

8" DS

CL 270.13

PIPE PENETRATION, SEE NOTE

5 AND DETAIL 1, TYP

4'

0"

10" DS

CL 270.21

8" DS

INV 266.50

M602

1A_______

M602

1A_______

EQ 2' - 4" EQ

2'

4"

14" 14"

EX STEEL TANK

WALL PANEL,

SEE NOTE 3

EX STEEL TANK WALL

PANEL SEAM, TYP

CONNECTION BY TANK

MFR, SEE NOTES 3 AND 4

COVER PL1/4" A36 STEEL,

ROLLED TO MATCH TANK DIA,

SEE NOTES 3 AND 4

8"/10" DS

CL, SEE PLAN

CL PIPE

C L

PI

PE

FLANGE GASKET

BETWEEN FLANGE AND

COVER PL, EA SIDE

CONTINUOUS GASKET

BY TANK MFR

8"/10" DS

CL, SEE PLAN

CONNECTION BY TANK

MFR, SEE NOTES 3 AND 4

COVER PL1/4" A36 STEEL,

ROLLED TO MATCH TANK DIA,

SEE NOTES 3 AND 4

EX STEEL TANK WALL

PANEL, SEE NOTE 3

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

Au to de sk

D oc s:

//3

-0

_W

PC

F So lid s

Pr oc es si ng Im p Ph

I/

1-

8-

0-

D

ST

A- M

.rv t

5/

/2

4:

:5

PM

M602

J. ALIANGAN

M. MAZZOCHETTE

M. MAZZOCHETTE

DIGESTED SLUDGE STORAGE TANK A

MECHANICAL

SECTIONS AND DETAILS

SECTION

3/16" = 1'-0" M601

B SECTION

3/16" = 1'-0" M601

C

NOTES:

3/16" = 1'-0" 5'0246

DETAIL

1" = 1'-0"

M601

SECTION

1" = 1'-0" M602

1A

1.

2.

3.

4.

5.

NOZZLE ASSEMBLIES DESIGNED AND SUPPLIED BY

PUMP MIXING SYSTEM MANUFACTURER.

EXISTING TANK FILL, DRAW, OVERFLOW, AND

DRAINAGE PIPING IS NOT SHOWN FOR CLARITY.

EXISTING DIGESTED SLUDGE TANK IS AN EPOXY

COATED, BOLTED STEEL PEABODY TECTANK LIQUID

STORAGE TANK. MODIFICATIONS TO THE TANK SHELL

SHALL BE COORDINATED WITH AND DESIGNED BY THE

TANK MANUFACTURER. LAPPED AND BOLTED COVER

PLATE CONNECTION AND SEALING DETAILS SHALL BE

PROVIDED BY THE MANUFACTURER PRIOR TO

FABRICATION.

METAL COATING SYSTEM TO BE APPLIED TO THE

COVER PLATE SHALL MATCH THE EXISTING DIGESTED

SLUDGE TANK COATING SYSTEM, REFER TO SECTION

09 90 00. REPAIR EXISTING COATING SYSTEM AT

DRILLED BOLT AND/OR WELDED CONNECTIONS.

ALL EXPOSED SLUDGE PIPING SHALL BE INSULATED

AND HEAT TRACED ACCORDING TO SPECIFICATION 40

41 13 - HEAT TRACING SYSTEMS.

1 BID SET 05/2026 JTH

116 342

M620

M620

A_______

M622

C_______

M622

C_______

M622

B_______

M622

B_______

CLASS I, DIV 1

CLASS I, DIV 2

LEGEND:

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W P

C F

S o lid s P ro c e s s in g I m p P h I /3

-0

-6

-D

S T

B -M

.r v t

/1

/2

:4 :4

P

M

M620

J. ALIANGAN

M. MAZZOCHETTE

A. PRABAKARAN

DIGESTED SLUDGE STORAGE TANK B

MECHANICAL

AREA CLASSIFICATION PLAN AND SECTION

NOTES:

N

1. NOZZLE ASSEMBLIES DESIGNED AND SUPPLIED BY

PUMP MIXING SYSTEM MANUFACTURER.

2. EXISTING TANK FILL, DRAW, OVERFLOW, AND

DRAINAGE PIPING IS NOT SHOWN FOR CLARITY.

3. PROVIDE EACH TANK ROOF ACCESS LADDER WITH A

LADDER SAFETY SYSTEM IN ACCORDANCE WITH

SECTION 05 51 33.

1/4" = 1'-0"

1 1 3 7'0 2

1/4" = 1'-0"

CLASSIFICATION PLAN

SPACE CLASSIFIED PER NFPA-820-2024

EDITION AS FOLLOWS:

CLASS I, DIVISION 1 AREAS:

1. SLUDGE-BLENDING TANKS AND HOLDING WELLS

TABLE 6.2.2(a), ROW 11, LINE a

• ENCLOSED - ENTIRE SPACE

HAZARDOUS AREAS:

SECTION

1/4" = 1'-0" M620

A

1 BID SET 05/2026 JTH

117 342

NOZZLE ASSEMBLIES, TYP

SEE NOTE 1

EX 42' Ø CONCRETE TANK

SLOPE

S L O

P E

SLOPE

S L O

P E

EX LADDER W/ SAFETY

CAGE, SEE NOTE 3, TYP

EX INTERMEDIATE PLATFORM

.8

.8

8" DS, CL 266.50

10" DS, CL 257.25, SEE CIVIL

FOR CONTINUATION

8" DS, CL 257.25, SEE CIVIL

FOR CONTINUATION

M622

C_______

M622

C_______

M622

B_______

M622

B_______

30.85°

EX 42' Ø CONCRETE TANK

M620

A_______

M620

A_______

M622

C_______

M622

C_______

M622

B_______

M622

B_______

2' - 5 1/2"

10" DS, CL 257.25, SEE CIVIL

FOR CONTINUATION

8" DS, CL 257.25, SEE CIVIL

FOR CONTINUATION

10" DS, CL 260.00

8" DS, CL 260.00

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W P

C F

S o lid s P ro c e s s in g I m p P h I /3

-0

-6

-D

S T

B -M

.r v t

/1

/2

:4 :4

P

M

M621

J. ALIANGAN

M. MAZZOCHETTE

A. PRABAKARAN

DIGESTED SLUDGE STORAGE TANK B

MECHANICAL

PLANS

1/4" = 1'-0"

TANK B TOP PLAN

NOTES:

N

1/4" = 1'-0"

TANK B BOTTOM PLAN

N

1. NOZZLE ASSEMBLIES DESIGNED AND SUPPLIED BY

PUMP MIXING SYSTEM MANUFACTURER.

2. EXISTING TANK FILL, DRAW, OVERFLOW, AND

DRAINAGE PIPING IS NOT SHOWN FOR CLARITY.

3. PROVIDE EACH TANK ROOF ACCESS LADDER WITH A

LADDER SAFETY SYSTEM IN ACCORDANCE WITH

SECTION 05 51 33.

1/4" = 1'-0"

1 1 3 7'0 2

1 BID SET 05/2026 JTH

118 342

NOZZLE ASSEMBLIES, SEE

NOTE 1, TYP

8" DS

CL 266.50

EX 42' Ø

CONCRETE TANK

EL 265.75

EL 260.00

WEST SIDE TANK GRADE EL 263.90

SOUTH SIDE TANK GRADE EL 264.75

10" DS

CL 260.00

10" DS, CL 257.25, SEE CIVIL

FOR CONTINUATION

8" DS, CL 257.25, SEE CIVIL

FOR CONTINUATION

EL 265.75

EL 260.00

WEST SIDE TANK GRADE EL 263.95

EL 265.75

8" DS, CL 257.25

SEE CIVIL FOR

CONTINUATION

10" DS, CL 257.25

SEE CIVIL FOR

CONTINUATION

10' - 2 1/2"

NOZZLE ASSEMBLIES, SEE

NOTE 1, TYP

8" DS

CL 266.50

EL 259.50

10" DS

CL 260.00

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

A u to d e s k D o c s /3

-0

W P

C F

S o lid s P ro c e s s in g I m p P h I /3

-0

-6

-D

S T

B -M

.r v t

/1

/2

:4 :4

P

M

M622

J.ALIANGAN

M. MAZZOCHETTE

A. PRABAKARAN

DIGESTED SLUDGE STORAGE TANK B

MECHANICAL

SECTIONS

NOTES:

1. NOZZLE ASSEMBLIES DESIGNED AND SUPPLIED BY

PUMP MIXING SYSTEM MANUFACTURER.

2. EXISTING TANK FILL, DRAW, OVERFLOW, AND

DRAINAGE PIPING IS NOT SHOWN FOR CLARITY.

1/4" = 1'-0"

1 1 3 7'0 2

1 BID SET 05/2026 JTH

SECTION

1/4" = 1'-0" M620

C

SECTION

1/4" = 1'-0" M620

B

119 342

M651

M651

A_______

M651

B_______

M651

B_______

M652

C_______ M652

C_______

8" PV, TYP

8" FLOW METER, TYP

12"12"

3/4" SW, CL 275.13

EF-650-1

UH-650-2

2" COMBINATION AIR

VALVE SEE NOTE 1

2" COMBINATION AIR

VALVE SEE NOTE 1

8" DS, CL 266.44

2" DS, CL 270.67

8" DISMANTLING JOINT

8" SWING CHECK VALVE

MIN

2' - 0"

MIN

3' - 4"

MIN

2' - 0"

MIN

3' - 4"

FIT

34A-147-1

FIT

34B-247-2

FE

34B-247-2

FE

34A-147-1

M651

A_______

M651

A_______

M651

B_______

M651

B_______

M652

C_______ M652

C_______

8" DS, DISCHARGE

30°

29 1/2"

HORIZONTAL

CHOPPER PUMP 1

10" PV, TYP

10" PV, TYP

3/4" SW, CL 263.99, SEAL

FLUSHING CONNECTION, TYP

HORIZONTAL

CHOPPER PUMP 2

3-TON PORTABLE

ADJUSTABLE GANTRY CRANE

10" DS, CL 262.95

34B-147-2

34A-147-1

5°

10" DS, CL 262.95

10" DS, CL 262.95

10" DS, CL 257.25, FROM TANK B

10" DS, CL 262.95

10" DS, CL 256.25, FROM TANK A

8" DS, CL 256.25, TO TANK A

3' - 11"8' - 9"6' - 8"8' - 6 1/2"4' - 1 1/2"

8" DS, CL 257.25, TO TANK B

FIT

34A-147-1

FIT

34B-247-2

9'

3/

4"

DESIGNED THE SCALE BAR

SHOWN BELOW

MEASURES ONE

INCH LONG ON

THE ORIGINAL

DRAWING.

DATE:

H & S JOB

NUMBER

IFB NO.

500640-

FY27-02

DRAWING

NUMBER

PROJ.ENGR.

DRAWN

CHECKED

NO. ISSUED FOR DATE BY

HAZEN AND SAWYER

1 SOUTH STREET, SUITE 1150

BALTIMORE, MARYLAND 21202

TOWN OF LEESBURG

LEESBURG, VIRGINIA

WATER POLLUTION CONTROL FACILITY

SOLIDS PROCESSING

IMPROVEMENTS - PHASE 1

J. HISE

MAY 2026

31111-098

SHEET OF XXAPPROVED

Au to de sk

D oc s:

//3

-0

_W

PC

F So lid s

Pr oc es si ng Im p Ph

I/

1-

8-

0-

D

SM

-M .rv t 5/

/2

4:

:3

PM

M650

M. CASUCO

M. MAZZOCHETTE

M. MAZZOCHETTE

DIGESTED SLUDGE MIXING BUILDING

MECHANICAL

PLANS

3/8" = 1'-0"

TOP PLAN

3/8" = 1'-0"

BOTTOM PLAN

N

NOTES:

1.

2.

AIR RELIEF VALVE DESIGNED AND SUPPLIED BY

PUMPED MIXING SYSTEM MANUFACTURER.

HORIZONTAL CHOPPER PUMPS DESIGNED AND

SUPPLIED BY PUMP MIXING SYSTEM MANUFACTURER.

3/8" = 1'-0" 4'21012"

N

1 BID SET 05/2026 JTH

120 342

8" DS, CL 256.25

TO TANK A

10" PV, TYP

SEE NOTE 1

2"…