Executive Summary
Alternative 2b
This alternative would be implemented at the same receiver sites and using the same borrow sites as
described for Alternative 2a; however, adherence to applicable, local noise ordinances would limit the
hours and number of days per week that beach replenishment could occur. The construction schedules
and associated sand quantities associated with variations 2a and 2b are shown in Table ES-6. The overall
quantity of sand would be 1.25 million cy under Alternative 2b versus 2.04 million cy under Alternative 2a.
Table ES-6
Alternative 2 Schedule and Production
Alternative 2a
Alternative 2b
(Assumes 7-day/24-hour work schedule)
(Adheres to Noise Ordinances)(3)
Duration of
Duration of
Replenishment
Pipeline
Replenishment
Pipeline
Site
Activity(2)
Site
Activity(2)
Applicable
Borrow
Receiver
Quantity
Construction(1)
(estimated
Quantity
Construction(1)
(estimated
Noise
Site
Site
(cy)
(estimated days)
days)
(cy)
(estimated days)
days)
Ordinance?
S. Oceanside
570,000
42
285,000
63
Yes
SO-9
42
63
N. Carlsbad
0
0
0
0
N/A
S. Carlsbad N.
218,000
19
218,000
19
No
32
32
S. Carlsbad S.
142,000
13
142,000
13
No
SO-7
Batiquitos
0
0
0
0
N/A
Leucadia
0
0
0
0
0
0
N/A
Moonlight
0
0
0
0
N/A
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
44
64
Yes(4)
Torrey Pines
360,000
28
180,000
40
Mission
MB-1
150,000
14
14
75,000
21
21
Yes
Beach
Imperial
SS-1
180,000
16
16
90,000
24
24
Yes
Beach
Total
2,044,000
172
172
1,254,000.00
233
233
Average Production Rate
15,000 cy/day
5,000 cy/day
Assumptions: Noise limits would allow only one shift of production per day with no construction on Sundays or holidays. This would
limit volume by 50 percent due to cost constraints and production to 1/3 (3 times longer). Production rates are average and similar for
either hopper or cutterhead dredge.
(1)
Includes 2 to 4 days for mobilization prior to sand placement and 2 to 4 days for demobilization post placement, depending on 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)
(3)
Assumes a working schedule from 7:00 a.m. to 7:00 p.m. Monday through Friday, limited working hours on Saturday, and no working
hours on Sundays and holidays.
The Torrey Pines conveyance plan includes use of Del Mar's beach for pipeline conveyance of sand. The use of the City of Del Mar's
(4)
beach for this purpose may necessitate conformance with the noise ordinance.
Regional Beach Sand Project EIR/EA
Page ES-15
99-69\SANDAG EIREA es.wpd 7/17/00
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