BROAD BEACH RESTORATION PROJECT California State Lands ... · proposed grade (foreground) proposed...

DUNE RESTORATION

PLANT LEGEND & DUNE PROTOTYPES

AS SHOWN 11/7/12

1DUNE HUMMOCK PROTOTYPES

2DUNE RESTORATION KEYPLAN FOR ZONES A-K

SCALE: 1 " = 10 '

0 10

SCALE: 1" = 10'-0"

DUNE RESTORATION NOTES:

1) SEE SHEETS L-2 TO L-4 FOR TYPICAL DUNE RESTORATION SECTIONS AND SHEETS L-5 TOL-10 FOR THE ENTIRE BEACH.

2) ALL PROPOSED PLANTING WILL BE IRRIGATED WITH A TEMPORARY IRRIGATION SYSTEM THEIRRIGATION SYSTEM WILL PROVIDE THE MINIMUM AMOUNT OF WATER REQUIRED TOSUSTAIN GOOD PLANT HEALTH DURING THE PLANT ESTABLISHMENT PERIOD, AND ISEXPECTED TO BE DISCONTINUED APPROXIMATELY 2-3 YEARS AFTER INSTALLATION.

3) THE EXISTING ROCK REVETMENT DEPICTED ON THE DUNE PROTOTYPE SECTIONS ONSHEETS L-2 AND L-3 IS NOT PRESENT IN ALL LOCATIONS ALONG THE BEACH. SEEENGINEERING PLANS FOR THE LIMITS OF THE EXISTING ROCK REVETMENT.

4) THE DUNE PROTOTYPE SECTIONS ON SHEETS L-1 ARE INTENDED TO DEPICT THEAPPROXIMATE RELATIONSHIPS BETWEEN THE PROPOSED DUNE HUMMOCKS AND THEEXISTING ROCK REVETMENT, AND THE ACTUAL ELEVATIONS AND EXTENT OF ROCK MAYVARY. AS SHOWN, A 2' MINIMUM BASE LAYER OF SAND WILL BE PLACED OVER THEREVETMENT WHERE IT EXISTS, AND 2-3.3' HIGH DUNE HUMMOCKS WILL BE CREATED OVERTHIS BASE LAYER OF SAND. 3

PLANT LEGEND

SCALE: 1 " = 500 '

0 500

SCALE: 1" = 500'

N

PACIFIC OCEAN

POINT LECHUZA

BROAD BEACH ROAD

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

L-1

20 of 42

B

C

D

E

F

GH

IJK

A

SHEET INDEXL-1: NOTES & LEGENDSL-2: TYPICAL SECTIONSL-3: TYPICAL SECTIONSL-4: TYPICAL SECTIONSL-5: GRADING & PLANTING ZONES A-BL-6: GRADING & PLANTING ZONES C-DL-7: GRADING & PLANTING ZONES E-FL-8: GRADING & PLANTING ZONES G-HL-9: GRADING & PLANTING ZONES I-JL-10: GRADING & PLANTING ZONES K

LOT 30760 TO LOT 31016 (DOUBLE ROW, WITH REVETMENT)

RESTORE EXISTING DUNE HUMMOCKS, CREATE SECOND SEAWARD ROW

-30

-20

-10

0

10

20

30

40

-30

-20

-10

0

10

20

30

40

0 50 100 150 200 3000-50

RESTORE EXISTING

DUNE

+12

1

10

EXISTING ROCK

REVETMENT

EL

EV

AT

IO

N (M

LL

W)

250

POST NOURISHMENT TOE

+17 MLLW DUNE FOUNDATION

JOIN EXISTING DUNES

NOURISHMENT VOLUME BELOW +17 MLLW:

APPROX. 92 CY/FT

-100-150

HIGH TIDE

LOW TIDE

DUNE VEGETATION (APPROX. 40% COVERAGE)

LOT 30708 TO LOT 30756 (DOUBLE ROW, WITHOUT REVETMENT)

RESTORE EXISTING DUNE HUMMOCKS, CREATE SECOND SEAWARD ROW

-30

-20

-10

0

10

20

30

40

-30

-20

-10

0

10

20

30

40

0 50 100 150 200 3000-50

RESTORE EXISTING

DUNE

+12

1

10

EL

EV

AT

IO

N (M

LL

W)

250

POST NOURISHMENT TOE

+17 MLLW DUNE FOUNDATION

JOIN EXISTING DUNES

NOURISHMENT VOLUME BELOW +17 MLLW:

APPROX. 92 CY/FT

-100-150

HIGH TIDE

LOW TIDE

DUNE VEGETATION (APPROX. 40% COVERAGE)

EXISTING GRADE

PROPOSED GRADE (FOREGROUND)

PROPOSED GRADE (BACKGROUND)

LEGEND

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

1" = 20' 11/7/12

DUNE RESTORATION:

TYPICAL SECTIONS

NOTE: SEE SHEET L-4 FOR DUNE RESTORATION KEY MAP AND NOTES, DUNE

HUMMOCK PROTOTYPES, AND PLANT LEGENDS. SEE SHEETS L-5 TO L-7 FOR

TYPICAL DUNE HUMMOCK GRADING AND PLANTING PLANS.SCALE: 1 " = 20 '

0 20

L-2

21 of 42

LOT 31020 TO LOT 31220 (DOUBLE ROW)

CREATE TWO ROWS OF DUNE HUMMOCKS (NO REMNANT DUNE EXISTS)

-30

-20

-10

0

10

20

30

40

-30

-20

-10

0

10

20

30

40

0 50 100 150 200 3000-50

EXISTING GROUND

(APPROX)

+12

1

10

EXISTING ROCK

REVETMENT

EL

EV

AT

IO

N (M

LL

W)

250

POST NOURISHMENT TOE

+17 MLLW DUNE FOUNDATION

50 FT OR WIDER, LANDWARD OF REVETMENT

NOURISHMENT VOLUME BELOW +17 MLLW:

APPROX. 92 CY/FT

-100-150

LOT 31224 TO LOT 31346 (DOUBLE ROW)

CREATE ONE ROW OF DUNE HUMMOCKS LANDWARD OF REVETMENT AND ONE ROW SEAWARD OF THE REVETMENT.

-30

-20

-10

0

10

20

30

40

-30

-20

-10

0

10

20

30

40

0 50 100 150 200 3000-50

EXISTING GROUND

(APPROX)

+12

1

10

EXISTING ROCK

REVETMENT

EL

EV

AT

IO

N (M

LL

W)

250

POST NOURISHMENT TOE

+17 MLLW DUNE FOUNDATION

50 FT WIDE, CENTERED OVER REVETMENT

NOURISHMENT VOLUME BELOW +17 MLLW:

APPROX. 92 CY/FT

-100-150

HIGH TIDE

LOW TIDE

HIGH TIDE

LOW TIDE

DUNE VEGETATION (APPROX. 40% COVERAGE)

DUNE VEGETATION (APPROX. 40% COVERAGE)

EXISTING GRADE

PROPOSED GRADE (FOREGROUND)

PROPOSED GRADE (BACKGROUND)

LEGEND

1" = 20' 11/7/12

DUNE RESTORATION:

TYPICAL SECTIONS

SCALE: 1 " = 20 '

0 20

NOTE: SEE SHEET L-4 FOR DUNE RESTORATION KEY MAP AND

NOTES, DUNE HUMMOCK PROTOTYPES, AND PLANT LEGENDS. SEE

SHEETS L-5 TO L-7 FOR TYPICAL DUNE HUMMOCK GRADING AND

PLANTING PLANS.

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

L-3

22 of 42

LOT 31350 TO 31412 (UNPROTECTED DUNES)

CREATE TWO ROWS OF DUNE HUMMOCKS ADJACENT TO EXISTING SEAWALL AND/OR FACE OF BLUFF.

-30

-20

-10

0

10

20

30

40

-30

-20

-10

0

10

20

30

40

0 50 100 150 200 3000-50

+12

1

VARIES

EXISTING SEAWALL

(TYPICAL ALONG REACH)

EL

EV

AT

IO

N (M

LL

W)

250

POST NOURISHMENT TOE

+17 MLLW DUNE FOUNDATION

50 FT WIDE IN FRONT OF EXISTING SEAWALLS

NOURISHMENT VOLUME BELOW +17 MLLW:

APPROX. 80 CY/FT

-100

TW VARIES +17

TO +20 MLLW

-30

-20

-10

0

10

20

30

40

-30

-20

-10

0

10

20

30

40

0 50 100 150 200 2500-50

EXISTING GROUND (APPROX)

+14

1

3

PROPOSED NOURISHMENT PROFILE

APPROX. 85 CY/FT

+17

EXISTING PILE FOUNDATIONS

EL

EV

AT

IO

N (M

LL

W)

POST NOURISHMENT TOE

LOT 31418 TO POINT LECHUZA (UNPROTECTED DUNES)

CREATE TWO OR THREE ROWS OF DUNE HUMMOCKS ADJACENT TO EXISTING PILE FOUNDATIONS.

+20 MLLW DUNE FOUNDATION

50 FT WIDE

EXISTING GROUND (APPROX)

HIGH TIDE

LOW TIDE

HIGH TIDE

LOW TIDE

DUNE VEGETATION (APPROX. 40% COVERAGE)

DUNE VEGETATION (APPROX. 40% COVERAGE)

1

2

EXISTING GRADE

PROPOSED GRADE (FOREGROUND)

PROPOSED GRADE (BACKGROUND)

LEGEND

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

1" = 20' 11/7/12

DUNE RESTORATION:

TYPICAL SECTIONS

SCALE: 1 " = 20 '

0 20

NOTE: SEE SHEET L-4 FOR DUNE RESTORATION KEY MAP AND NOTES, DUNE

HUMMOCK PROTOTYPES, AND PLANT LEGENDS. SEE SHEETS L-5 TO L-7 FOR

TYPICAL DUNE HUMMOCK GRADING AND PLANTING PLANS.

L-4

23 of 42

DUNE RESTORATION:

TYPICAL DUNE HUMMOCK GRADING

& PLANTING PLAN

1ZONE A

SCALE: 1 " = 20 '

0 20

1" = 20' 11/7/12

2ZONE B

N

SCALE: 1 " = 20 '

0 20

N

NOTE: SEE SHEET L-1 TO L-3 FOR TYPICAL DUNE RESTORATION SECTIONS AND

SHEET L-4 FOR DUNE RESTORATION KEY MAP AND NOTES, DUNE HUMMOCK

PROTOTYPES, AND PLANT LEGENDS.

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

L-5

24 of 42

DUNE RESTORATION:

TYPICAL DUNE HUMMOCK GRADING

& PLANTING PLAN

3ZONE C

SCALE: 1 " = 20 '

0 20

1" = 20' 11/7/12

4ZONE D

N

SCALE: 1 " = 20 '

0 20

NOTE: SEE SHEET L-1 TO L-3 FOR TYPICAL DUNE RESTORATION SECTIONS AND

SHEET L-4 FOR DUNE RESTORATION KEY MAP AND NOTES, DUNE HUMMOCK

PROTOTYPES, AND PLANT LEGENDS.

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

L-6

25 of 42

N

DUNE RESTORATION:

TYPICAL DUNE HUMMOCK GRADING

& PLANTING PLAN

5ZONE E

SCALE: 1 " = 20 '

0 20

1" = 20' 11/7/12

6ZONE F

N

SCALE: 1 " = 20 '

0 20

NOTE: SEE SHEET L-1 TO L-3 FOR TYPICAL DUNE RESTORATION SECTIONS AND

SHEET L-4 FOR DUNE RESTORATION KEY MAP AND NOTES, DUNE HUMMOCK

PROTOTYPES, AND PLANT LEGENDS.

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

L-7

26 of 42

N

DUNE RESTORATION:

TYPICAL DUNE HUMMOCK GRADING

& PLANTING PLAN

7ZONE G

SCALE: 1 " = 20 '

0 20

1" = 20' 11/7/12

8ZONE H

N

SCALE: 1 " = 20 '

0 20

N

NOTE: SEE SHEET L-1 TO L-3 FOR TYPICAL DUNE RESTORATION SECTIONS AND

SHEET L-4 FOR DUNE RESTORATION KEY MAP AND NOTES, DUNE HUMMOCK

PROTOTYPES, AND PLANT LEGENDS.

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

L-8

27 of 42

DUNE RESTORATION:

TYPICAL DUNE HUMMOCK GRADING

& PLANTING PLAN

9ZONE I

SCALE: 1 " = 20 '

0 20

1" = 20' 11/7/12

10ZONE J

SCALE: 1 " = 20 '

0 20

N

NOTE: SEE SHEET L-1 TO L-3 FOR TYPICAL DUNE RESTORATION SECTIONS AND

SHEET L-4 FOR DUNE RESTORATION KEY MAP AND NOTES, DUNE HUMMOCK

PROTOTYPES, AND PLANT LEGENDS.

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

L-9

28 of 42

N

DUNE RESTORATION:

TYPICAL DUNE HUMMOCK GRADING

& PLANTING PLAN

11ZONE K

1" = 20' 11/7/12

SCALE: 1 " = 20 '

0 20

N

NOTE: SEE SHEET L-1 TO L-3 FOR TYPICAL DUNE RESTORATION SECTIONS AND

SHEET L-4 FOR DUNE RESTORATION KEY MAP AND NOTES, DUNE HUMMOCK

PROTOTYPES, AND PLANT LEGENDS.

BROAD BEACH RESTORATION PROJECT

California State Lands Commission

60% SUBMITTAL

6935-02

L-10

29 of 42