2020.08.07 Boundary SheetG1_SheetC1 - Notes Shown_0004.pdf

PAW PAW TUNNEL

PARKING LOT

(SEE INSET THIS SHEET)

TOWN OF PAW PAW,

WEST VIRGINIA

POTOMAC RIVER

PAW PAW TUNNEL

PROJECT SITE

ROUTE 51

CONSTRUCTION

ACCESS ROUTE 3

D

AV

ID

T

H O

M

AS

R D

S E

O

LD

TO

W

N O

R

LE

A N

S R

D S

E

MERTENS AVE

CHOH TOW

PATH

M A

LC

O

LM

R

D S

E

TUNNEL HILL RD

CONSTRUCTION

ACCESS ROUTE 2

CONSTRUCTION

ACCESS ROUTE 1

TUNNEL HILL TRAIL

24 MILES ± TO

CUMBERLAND, MD

40 MILES ± TO

WINCHESTER, VA

APPROXIMATE LOCATION OF

DOWNSTREAM SPOIL AREA

(SEE NOTE 8)

APPROXIMATE

LOCATION OF

WASTE WEIR

MM 154.25

APPROXIMATE

LOCATION OF

WASTE

WEIRMM 153

EXISTING ACCESS RAMP

OUT OF CANAL PRISM

OUTDOOR

CLUB ROAD

TWIGG

HOLLOW

CULVERT 210

MM 153.46

HISTORIC OUTFALL OF TWIGG

HOLLOW INTO CULVERT 210

(CURRENTLY FLOW IS

DIRECTED INTO CANAL)

SEE NOTE 9

LOCK 61

MM 153.10

LOCK 62

MM 154.16

LOCK 63 1/3

MM 154.48

LOCK 64 2/3

MM 154.60

LOCK 66

MM 154.70

CURRENT OUTFALL TO

TWIGG HOLLOW INTO CANAL

APPROXIMATE PARK

BOUNDARY (TYP)

APPROXIMATE PARK

BOUNDARY (TYP)

APPROXIMATE PARK

BOUNDARY (TYP)

MD ROUTE 51

POTENTIAL

EXPANSION OF

PARKING AREA

FOR STAGING

(SEE NOTE 4)

SEE NOTE 5

POTENTIAL EXPANSION

OF ENTRANCE ROAD TO

PAW PAW CAMPGROUND

PARKING AREA

CHOH

TOWPATH

SCHEMATIC DESIGN

PAW PAW TUNNEL TRAILHEAD PARKING LOT

1. CONSTRUCTION ACCESS ROUTE 1: THRU PAW PAW TUNNEL

· APPROXIMATE DISTANCE FROM PARKING LOT TO PROJECT SITE: 1.1

MILES ± (INCLUDING 3120 LINEAR FEET OF TUNNEL)

2. CONSTRUCTION ACCESS ROUTE 2: VIA TUNNEL HILL TRAIL

· APPROXIMATE DISTANCE FROM PARKING LOT TO PROJECT SITE: 3.2

MILES ±

3. CONSTRUCTION ACCESS ROUTE 3: ACCESS VIA CHESAPEAKE AND OHIO CANAL

(CHOH) TOWPATH, NORTH OF PROJECT SITE

· APPROXIMATE DISTANCE FROM PARKING LOT TO PROJECT SITE: 10.2

MILES ±

4. PLACE GRAVEL ON TOP OF FILTER FABRIC WITHIN EXISTING GRASS AREA IF

USED FOR LAYDOWN/STAGING AREA. THICKNESS OF GRAVEL TO BE

DETERMINED BY THE CONTRACTOR TO AVOID RUTTING. EXCAVATION SHALL BE

LIMITED TO MINOR GRADING - NOT TO EXCEED 6-INCHES. LIMITS AND EXTENT

OF LAYDOWN/STAGING AREA ON EXISTING AND EXPANDED PARKING AREA

DURING CONSTRUCTION SHALL BE COORDINATED WITH THE CONTRACTING

OFFICER. SOME PORTION OF THE PARKING AREA SHALL REMAIN OPEN FOR

TURNAROUND AND PARKING.

5. CONTRACTOR SHALL REPLACE EXISTING GRAVEL TO PRE-CONSTRUCTION

CONDITION AT END OF THE PROJECT. AMOUNT OF AREA TO BE USED FOR

LAYDOWN/STAGING AREA TO BE APPROVED BY THE CONTRACTING OFFICER.

6. PRIOR TO NOTICE TO PROCEED, THE CONTRACTOR SHALL SUBMIT A STAGING PLAN

INDICATING LOCATIONS OF STRUCTURES AND LAY DOWN AREAS. THE PLAN SHALL

INCLUDE ALL POTENTIAL GROUND DISTURBING WORK. CONTRACTOR SHALL

COORDINATE WITH THE CONTRACTING OFFICER REGARDING GOVERNMENT

PROVIDED ARCHEOLOGICAL MONITOR.

7. IT IS CONTRACTOR'S RESPONSIBILITY TO KEEP THE VISITORS OUT OF THE

LAYDOWN/STAGING AREA AS WELL AS CONSTRUCTION AREA. HAULING ROUTE

AND PEDESTRIAN SHARED ACCESS SHOULD BE AVOIDED VIA USE OF THE

SHUTTLE AND/OR DETOUR.

8. STREAM CROSSING IS NECESSARY TO BE ESTABLISHED BY THE CONTRACTOR

FOR ACCESS ROAD THROUGH EXISTING SPOIL PILE. STREAM CROSSING (VIA

BRIDGE OR CAUSEWAY) AT TWIGG HOLLOW SHALL BE PERMANENTLY IMPROVED

BY THE CONTRACTOR TO SUSTAIN A MINIMUM LOADING OF HS-20.EXISTING

CAUSEWAY IS IN POOR CONDITION OVER CANAL FROM OUTDOOR CLUB ROAD

VIA ACCESS ROAD.

9. CONSIDERATION COULD ALSO BE DONE TO REALIGNING TWIGG HOLLOW TO

THE CANAL ERA STREAM BED THAT DRAINS TO CULVERT 210. THE PERMANENT

STREAM CROSSING IMPROVEMENT SHOULD REMAIN IN PLACE FOR NPS USE

AFTER COMPLETION OF THIS PROJECT.

Notes jreed Text Box

- Revision #1 - (NPS 8/7/20) ADDED PARK BOUNDARY (Accuracy sub-10 meter) jreed Text Box jreed Polygon

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F L

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K F I L L

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F L

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F L

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K F I L L

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T O

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K F I L L

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F I L L

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K F I L L

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F L

P T

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F L A

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F L

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F L A

G

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T O

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F L

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E E O

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T O

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B T M

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E O

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E E O

W

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T O

E E O

W

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F L

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BOARDWALK

BOARDWALK

BOARDWALK

P

T

U

N

N

E

L

S

T

E

P

S

BASELINE (TYP.)

BASELINE (TYP.)

C

A

N

A

L

C A

N

A

L

CANAL

CANAL

CANAL

C A

N A

L

C A

N A

L

C A

N A

L

BASELINE (TYP.)

BASELINE (TYP.)

BASELINE (TYP.)

BASELINE (TYP.)

R O

C K

S

LO

P E

C A

N A

L

C A

N A

L

33+00

34+00

35+00

36+00

38+

40+

ROCK SLOPE

ROCK SLOPE

BASELINE (TYP.)

.2

T O

E E O

W

.7

T O

E E O

W

.6

T O

E

N=692565.5793'

E=900171.9938'

ELEV=532.85'

NAIL SET

N

.7

E

.3

E L E V

.5

N

A

I L

S E T

N=693010.2916'

E=900387.6238'

ELEV=532.64'

NAIL SET IN

BOARDWALK

N=693097.8924'

E=900450.7251'

ELEV=532.65'

NAIL SET IN

BOARDWALK

N=693346.3047'

E=900640.9510'

ELEV=532.93'

NAIL SET

N=693438.3161'

E=900722.4223'

ELEV=534.24'

NAIL SET

N=693621.1687'

E=900875.8592'

ELEV=533.80'

NAIL SET

N

.1

E

.9

E L E V

.1

N

A

I L

S E T

N=692663.7304'

E=900187.3672'

ELEV=532.44'

NAIL SET IN

BOARDWALK

N=692842.2856'

E=900277.8209'

ELEV=532.46'

NAIL SET IN

BOARDWALK

N=693188.6448'

E=900513.6709'

ELEV=532.66'

NAIL SET IN

BOARDWALK

N=693512.6663'

E=900793.0085'

ELEV=534.12'

NAIL SET

D

I S K

S H

A

F T

A

L O

C

A

T I

N

I N

T U

N

N

E L

N

.0

E

.5

E L

.5

N

P S

S H

A

F T

L O

C

A

T I O

N

N

.1

E

.0

E L

.0

N

P S

S H

A

F T

L O

C

A

T I O

N

N

.9

E

.8

E L

.0

FLAG

N=692212.95

E=900096.28

EL=644.26

FLAG

N=692218.77

E=900097.09

EL=643.88

FLAG

N=692221.15

E=900099.17

EL=643.95

FLAG

N=692232.93

E=900117.01

EL=645.98

FLAG

N=692214.75

E=900140.60

EL=648.66

FLAG ORIGIN A AND B

N=692195.69

E=900124.80

EL=645.65

G

R

A

V

E

L

S

T

O

N

E

D

U

S

T

HISTORIC MASONRY

(TO BE PROTECTED

FROM FALLING DEBRIS

AND CONSTRUCTION

DEBRIS)

TO

W

P A

TH

TO

W

P A

TH

SCHEMATIC DESIGN

C5

C4

C3

C2

SCALE IN FEET

060 60 120 jreed Polygon jreed Text Box jreed Text Box

- Revision #1 - (NPS 8/7/20) ADDED PARK BOUNDARY (Accuracy sub-10 meter)