HomeMy WebLinkAbout97-57 - Adopting General Plan Amendment GP-97-01ARESOLUTION NO. q
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
COSTA MESA, CALIFORNIA, ADOPTING GENERAL PLAN
AMENDMENT GP -97-01A, AMENDING THE GENERAL
PLAN OF THE CITY OF COSTA MESA.
THE CITY COUNCIL OF THE CITY OF COSTA MESA DOES HEREBY RESOLVE
AS FOLLOWS:
WHEREAS, the General Plan was adopted by the City Council of the City of
Costa Mesa by Resolution No. 92-27 on March 16, 1992; and
WHEREAS, the General Plan is a long-range comprehensive document which
serves as a guide for the orderly development of Costa Mesa; and
WHEREAS, by its very nature, the General Plan needs to be updated and refined
to account for new information and passage of new State mandates; and
WHEREAS, General Plan Amendment GP -97-01 A amends the Environmental
Resources Element, Geology Subelement, by adding a discussion of the State Seismic
Hazard Map Act and a map delineating its application; and
WHEREAS, a public hearing was held by the Planning Commission on
June 9, 1997, and by the City Council on July 7, 1997, in accordance with Section
65355 of the Government Code of the State of California, all persons having been
given the opportunity to be heard both for and against said amendment GP -97-01 A
to the General Plan; and
WHEREAS, this Council deems it to be in the best interest of the City that said
amendment to the General Plan be adopted;
NOW, THEREFORE, BE IT RESOLVED by the Costa Mesa City Council that the
General Plan is hereby amended by the adoption of General Plan Amendment
GP -97-01A, amending the Geology Subelement to establish a discussion of the
Seismic Hazard Map Act and a map delineating its application as shown on Exhibit A.
BE IT FURTHER RESOLVED that the amendment is categorically exempt from
the requirements of the California Environmental Quality Act (CEQA) in that it is not
considered a project.
PASSED AND ADOPTED this 7th day of July, 1997.
Mayor of the City of t Mesa
ATTEST:
Deputy Ci1N Clerk of the City of Costa Mesa
STATE OF CALIFORNIA )
COUNTY OF ORANGE ) ss
CITY OF COSTA MESA )
R VED AS TO F RM
CITY ATTORNEY
I, MARY T. ELLIOTT, Deputy City Clerk and ex -officio Clerk of the City Council
of the City of Costa Mesa, hereby certify that the above and foregoing
Resolution No. 97_5� was duly and regularly passed and adopted by the said City
Council at a regular meeting thereof held on the 7th day of July, 1997.
IN WITNESS WHEREOF, I have hereunto set my hand and affixed the Seal of
the City of Costa Mesa this 8th day of July, 1997.
7.
Deputy City Jerk and ex -officio Clerk of
the City Co ncil of the City of Costa Mesa
EXHIBIT "A"
Amend page 97 and add page 97.1 of the Geology Subelement by inserting the highlighted
paragraphs and map:
TABLE 22: SELECTED HISTORIC EARTHQUAKES
ON THE SAN ANDREAS FAULT
Date Name
1857 Fort Tejon
1868 Imperial County
1916 Kern County
Magnitude
8.3± (Estimated)
5.5 (estimated)
6.0 (Estimated)
Documentation
Surface faulting,
strong shaking
Surface faulting,
strong shaking
Poorly
documented,
surface faulting
The effects of the above events on Costa Mesa are unknown, but it is
estimated that the area was probably subjected to shaking equal in
intensity to IV (1916) and to VI (1857) on the Modified Mercalli Scale.
San Jacinto Fault Zone
The San Jacinto fault zone extends over 180 miles from its junction with
the San Andreas fault (Figure 23), southeast of Palmdale, to the
Colorado River delta. The closest approach of this fault to Costa Mesa
is 44 miles. Several damaging historic events have occurred along the
San Jacinto fault, the most notable being the Imperial County earthquake
of 1940, which generated surface faulting. Although the San Jacinto
fault zone is slightly closer to Costa Mesa, the potential levels of
ground shaking from the San Andreas =ault are higher because of its
larger maximum credible earthquake.
SEISMIC HAZARDS
The seismic safety of Costa Mesa bears directly upon the geologic and
seismic conditions within the City and surrounding areas as presented in
the previous section. The potential seismic hazards which will be
considered in this section include: surface faulting, ground shaking,
the various types of ground failure, and seismically induced water waves
(tsunamis and seiches).
SeismicZHazard Map Act �,-,
Tlie Se 5mic '¢Hazard�`�'Map� -� Act was passed by t'iie I,e islature ten: 1990
'+t'cr
folloWan� >t�e Zo a P,rieta kear��hquake in= an �e�f�r� to .:further a.clenti�y.�anc3
�^ :�t`e,,, t�.s` Pw°�*°.' :^4Ph '++i awAG +,ss+�•.c ie,. 's �,, ♦ * 'v�, ^fin v» s.
mticrar..sejml
The Seismic:
Generally, t
ali
Earthquake Potential
one, J 41i-: Costa
eludes the same'"
W11.111Yth 4 .'J C1JUlll: naL.aru
L' study ' �> Detailed ''info:
S ;Development se-rvi.ces`
shown on `- iguMre
of the' City that -are ,also
nynew project „`(with some
ane �=is `;subject :+oto a` -site-
tion ` regarding rYie Act' is
,atment,
The earthquake potential for Costa Mesa can be expressed in terms of the
maximum credible earthquake and the likely earthquake occurrence.
97
SEISMIC HAZARD ZONE AND AREAS SUBJECT TO THE
SEISMIC HAZARD MAP ACT
97.1
RM
FIGURE 23.5