2.0 Alternatives Considered
Table 2-2
Alternative 1 Schedule and Production
Alternative 1a
Alternative 1b
(Assumes 7-day/24-hour work schedule)
(Adheres to Noise Ordinances)(3)
Replenishment
Duration of
Duration of
Site
Pipeline
Replenishment
Pipeline
Construction(1)
Activity(2)
Site
Activity(2)
Applicable
Borrow
Receiver
Quantity
(estimated
(estimated
Quantity
Construction(1)
(estimated
Noise
Site
Site
(cy)
days)
days)
(cy)
(estimated days)
days)
Ordinance?
S. Oceanside
380,000
30
190,000
44
Yes
SO-9
50
74
N. Carlsbad
240,000
20
120,000
30
Yes
S. Carlsbad N.
160,000
15
160,000
15
No
15
15
S. Carlsbad S.
0
0
0
0
No
SO-7
Batiquitos
118,000
12
118,000
12
No
Leucadia
130,000
13
35
130,000
13
35
No
Moonlight
88,000
10
88,000
10
No
SO-6
Cardiff
104,000
11
11
104,000
11
11
No
Solana Beach
140,000
13
13
70,000
18
18
Yes
SO-5
Del Mar
180,000
16
90,000
24
Yes
36
52
Yes(4)
Torrey Pines
240,000
20
120,000
28
MB-1
Mission Beach
100,000
11
11
50,000
16
16
Yes
Imperial
SS-1
120,000
12
12
60,000
18
18
Yes
Beach
Total
2,000,000
183
183
1,300,000
239
239
Average Production Rate
15,000 cy/day
5,000 cy/day
Assumptions: Noise limits would allow only one shift of production per day (instead of three) with no construction on Sundays or
holidays. Production would take three times longer. Production rates are average and similar for any type of dredge equipment.
Includes 2 to 4 days for mobilization prior to sand placement and 2 to 4 days for demobilization post placement, depending on
(1)
borrow source.
Maximum number of working days pipeline would be on the beach where a single borrow site serves more than one receiver site.
(2)
Assumes a working schedule from 7:00 a.m. to 7:00 p.m. Monday through Friday, limited working hours on Saturday, and no
(3)
working hours on Sundays and holidays.
(4)
The Torrey Pines conveyance plan includes use of Del Mar's beach for pipeline conveyance of sand and a booster pump would be
necessary. The use of the City of Del Mar's beach for this purpose may necessitate conformance with the City of Del Mar noise
ordinance even though the Torrey Pines receiver site is within State Park's jurisdiction.
Beach replenishment at the South Carlsbad North site would consist of the placement of dredged sediment
near the Palomar Airport Road intersection with Carlsbad Boulevard, stretching to the south for 2,100 feet
(0.4 mile) near the Encinas Creek outlet (Figure 2-5). A berm would be constructed to an elevation of
approximately 12 feet above MLLW. The beach fill would be flat with a width of approximately 170 feet.
The beach fill would then slope seaward approximately 100 feet at a slope of 10:1.
Regional Beach Sand Project EIR/EA
Page 2-19
99-69\SANDAG EIREA 3.4.wpd 7/17/00
Previous Page
