HomeMy WebLinkAboutCUP 9; South Coast Asphalt; Conditional Use Permit (CUP) (13)IC
MEMORANDUM
DATE : May 14, 1979
TO : Paul Bussey, City Manager
FROM: James C. Hagaman, Planning Director
RE: BRIEF HISTORY -SOUTH COAST ASPHALT PLANT
The following is a beief history highlighting the events regard- ing operational conditions especially noises of the subject operation.
1959: CUP-9 approved for an asphalt plant.
1961: Revision CUP-9, as per Planning Commission Resolution
No. 204 to permit rock quarrying and rock crushing.
These two above permits did not establish conditions to
mitigate adverse effects of the operation such as noise or the time limits of the operation,
1975: Residents in the nearby area have complained to the City about late night operation, especially noise and have requested the City to open Conditional Use Permit’.to miti- gate these problems.
Staff could not verify noise complaints after several late night field checks.
1976: The Planning Commission discussed this matter with repre-
sentatives of South Coast Asphalt and the citizens in the area. It was decided that there was no evidence to prove that South Coast Asphalt was responsible for the late night noise. Also, the representatives of South Coast Asphalt indicated they would limit operations to within 6:OO A.M. and 7:OO P.M.; if they had to work beyond these hours for
special orders they would notify the City. The City Council agreed with the Planning Commission’s findings, however they did ask the Police Department to monitor the complaints for
a given period of time.
1978: Twice in early 1978 letters were sent to residents in the area asking them to notify the Carlsbad Police Department
at the time of noise disturbance so that such disturbance
could be investigated and verified. The only calls the department received were for operations after 6:OO A.M.
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Memorandum - Paul Bussey
May 14, 1979
Page Two
1979: Staff received numerous phone calls from various citizens
complaining of late night operations. Staff indicated that they should note the times of the operations and by letter explain the problem.
May 9, 1979: The City received letters explaining that the operation
and noise begins at 6:OO A.M. and continues through
9:00 P.M.
May, 1979: Staff monitored the noise at various times and locations
near South Coast Asphalt on May 16 and 17. The results are listed below showing the time of the test, the location, the maximum, and the average. All noise measurements are
dBA .
5:lO - 5:25 p.m. 81 maximum 65 average North Way;/Gai 1 Drive
5:30 - 5:40 75 maximum 62 average .
Haymar by South Coast Asphalt
6:30 - 6:45 78 maximum 61 average
Haymar (E of previous position)
6:50 - 6:55 84 maximum 67 average
7:lO - 7:25 77 maximum 63 average
Haymar (E of above-end of .Haymar)
College and Haymar
7:30 - 7:45
Gail Drive
76 maximum 59 average
8:OO - 8:25 78 maximum 70 average
Vista Way at Port Circle (just above freeway)
5-17: 10:25 - 10:35 a.m. 83 maximum 73 average
Vista Way at Port Circle (same as above)
The average for all times was 62.8 dBA.
During the early evening hours on May 16, the freeway constituted a large part of the noise.
above the noise from South Coast Asphalt. The noise from South
Coast Asphalt is an irregular clanking and grinding.
Later, the freeway was hardly noticable
It is much
Memorandum - Paul Bussey
May 14, 1979 Page Three
more noticable and annoying than the freeway noise. In addition, the noise "seemed" to be louder late in the evening,
The Carlsbad General Plan establishes a guideline of 60 dB(A)
during the daytime and 45 dB(A) at night. Although the residences are in Oceanside, these standards should apply to these residences also.