broad beach restoration project california state lands ... · proposed grade (foreground) proposed...
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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