HomeMy WebLinkAboutMINUTES - 08031993 - IO.3 D'
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I .O. -3
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TO: BOARD OF SUPERVISORS Costa
FROM: Internal Operations Committee
County
DATE: July 26 , 1993 .
SUBJECT: LARGE LOT REZONING
SPECIFIC REQUEST(S) OR RECOMMENDATIONS) & BACKGROUND AND JUSTIFICATION
RECOMMENDATIONS
Inform the Board of the large lot rezoning options presented by the
Director of Community Development so that Board members can advise
the Committee of their thoughts on this measure. Hold the issue in
I.O. for action on September 27 , 1993 .
FISCAL IMPACT
Will vary depending on direction given to staff.
BACKGROUND/REASONS FOR RECOMMENDATIONS
On July 20, 1993,; the Director of Community Development forwarded
a report to I.O. on options for large lot rezoning actions (copy
attached) . The Committee discussed this item but decided to
forward the report to the Board for information and to reconsider
the item at the September 27 , 1993 I.O. meeting. Any feedback to
I.O. committee members would be appreciated.
The Briones Hills,Agricultural Preservation Agreement was discussed
where 5-acre zoning was committed to by Supervisor Fanden and if
this was going to be reconsidered that those participants need to
be notified.
The issue of insuring assignment of one staff to do all these
actions was discussed so that staff continuity on these various
zoning approaches might yield cost savings:
CONTINUED ON ATTACHMENT:
YES SIGNATURE
RECOMMENDATION OF COUNTY ADMINISTRATOR RECOMMENDATION OF ?ARD COMMITTEE
APPROVE OTHER
SIGNATURE(S) : SUNNE WRIGHT McPEAK E SMITH
ACTION OF BOARD ON Allgllst 3, 1993 APPROVED AS RECOMMENDED OTHER
The Board APPROVED 'the above recommendation and requested that Community Development
Department to send copies of this report to all the cities in Contra Costa, the
Citizens Land Alliance, East County Board of Realtors, Contra Costa Board of Realtors,
Building Industries' Association, the Sierra Club, Mt. Diablo Audoban, Cattlemen's
Association, the Farm Bureau and other environmental groups.
VOTE OF SUPERVISORS
I HEREBY CERTIFY THAT THIS IS A
UNANIMOUS (ABSENT TRUE AND CORRECT COPY OF AN
AYES: ' NOES: ACTION TAKEN AND ENTERED ON THE
ABSENT: ABSTAIN: MINUTES OF THE BOARD OF
SUPERVISORS ON THE DATE SHOWN.
Orig: Jim Cutler (646-2035) ATTESTED 3 /9 r1 3
cc: Community Development Department PHIL BATCHELOR, CLERK OF
CAO THE BOARD OF SUPERVISORS
County Counsel AND COUNTY ADMINISTRATOR
Public Works
BY , DEPUTY
MsIdArgelot.bo
CONTRA COSTA COUNTY
COMMUNITY DEVELOPMENT DEPARTMENT
DATE: July 20, 1993
TO: Internal'Operations C m ee
FROM: Harvey E. Bragdo , t unity Development
SUBJECT: LARGE LOT LTU LANDS REZONING
RECOMMENDATIONS
Provide direction on whether the Board wishes staff to proceed with additional large
lot rezoning efforts. Costs would be $5,000 to $10,000, depending on what effort
is needed.
FISCAL IMPACT
Staff time to do the studies and publication and notification costs to bring the
rezoning efforts to hearing.
BACKGROUND/REASONS FOR RECOMMENDATIONS
On June 22, 1993, the Board acted on the Internal Operations Committee (IOC) report
of June 14, 1993 which acknowledged the A-40 Ag Core rezoning effort in process,
the Agricultural Task Force work program, requested the Community Development
Department to rezone major publicly owned lands as staff time became available, and
determined the County Planning Commission should be the hearing body for rezoning
actions which flow from the Countywide review of open space zoning practices.
The IOC continued the discussion on subject of possible other rezoning actions which
the Board of Supervisors may wish to initiate until additional studies are completed.
As part of considering current and possible future rezoning actions,the Board directed
staff to study subdivision and rezoning activities outside the Urban Limit Line (ULL),
since January 1991 when the new County General Plan was adopted.
• Approved Subdivision Activity
Staff has compiled a list of approved subdivisions in areas which are designated
for agricultural;use. Since January 29, 1991, 39 subdivision applications have
received approval. Table 1 shows the "Subdivision Approved in Agricultural
Designations Since Adoption of the County General Plan." These applications
will relate to a, display graphic which will be available at the IOC meeting. It
shows the distribution of subdivisions across the County both inside and
outside of the ULL. Significantly, it includes major subdivisions,of agricultural
Internal Operations Co. nittee Date: July 20, 1993
Large Lot Rezoning -2-
lands, which include from five to nine lots. A total of 39 subdivision
applications received approval. These applications affected over 2,500 acres
and resulted in 139 parcels. Of this total, minor subdivision activity affected
nearly 90% (2,285 acres) of the acreage and created over 70% (102 parcels)
of all lots. Two hundred sixty-two (262) acres were affected through major
subdivision activity and created 37 lots.
As Table 1 indicates, many of the subdivisions yield acreage of less than one
unit/ten acres, especially within East County where most of the remaining
active farmingi land exists.
• Pending Applications
A survey of pending subdivision applications. reveal that 29 applications are
being processed in areas designated for agricultural use. Subdivision
applications which have pending general plan amendments were not included,
since the requested land use changes would result in urban densities.
Subdivision applications which are located in the Bethel Island - Off Island
Bonus Area were also not included in this list because a bonus density —
allowing urban densities — has been or may be awarded in these cases.
Of the 29 pending subdivisions, 27 represent minor subdivisions and affect a
total of 2,043 acres. These subdivisions, if approved, could result in a total of
88 parcels. Two major subdivisions affect 1,094 acres and would result in 124
total lots. The total acreage affected by all pending subdivision applications is
3,137 acres and could result up to 212 total lots.
• Large Lot Rezoning
The issue before the IOC and ambiguity to staff is that the Board on differing
occasions gave different direction to staff on moving ahead with large lot
rezoning efforts for the agricultural areas of the County.
Rezoning efforts within the Agricultural Core are pending before the County
Planning Commission and will be further discussed as a separate issue before
IOC at a later date.
The direction to initiate rezoning of major publicly held land to A-80 was
authorized based on the June 16, 1993 IOC report and was accepted by the
Board on June 22, 1993.
The Board needs to give further direction to staff on what additional actions it
Internal Operations Co. ,nittee Date: July 20, 1993
Large Lot Rezoning -3-
wishes staff to Initiate on this subject. The alternatives range from a
Countywide rezoning of the remaining agriculturally designated lands
(Agricultural Lands, Delta Recreation and Resources categories),to breaking the
issue into smaller parts or areas of the County. For example, the Board could
direct staff to consider rezoning:
■ The Delta Recreation and Resources area lands which are within the
Federal Emergency Management Agency designated 100-year flood
plain. These areas are susceptible to flooding due to levee failure and
includes only "island" areas as defined by the General Plan Congress
(other mainland areas have similar flood hazards but are designated as
Agricultural Lands). The General Plan requires a minimum 20 lot size.-
our
ize;our staff, recommendation urges up to 80-acre minimum depending on
the existing parcel sizes.
■ The Board has established a firm policy of not granting exceptions to the
collect and convey ordinance. This is discussed in the attached
memorandum from Mitch Avalon of the Public Works Department.
Rezoning to 10-acre minimum parcel size or larger would resolve this
issue for areas located east of Marsh.Creek or in the Byron area.
■ Lands within the ULL designated as Agricultural Lands. These lands
could be protected from pre-mature ranchette subdivisions in order to
prevent;fragmentation that would preclude orderly urban development at
some future time. These areas could be rezoned to very large sizes --•20
to 80 acres -- to preserve the future long range planning options.
■ Separate rezoning efforts could be considered on an area by area basis
and have an individualized review of the appropriate agricultural zoning
done 'for each (e.g., the Morgan Territory area of southeast County,
etc.).
■ Conformity with General Plan policies of adjacent cities is another
choice. Clayton, for example, has urged a 20-acre minimum for
agricultural lands east of the city within their planning area.
Staff needs clear direction from the Board on which of these options, if any, that the
they wish staff to pursue over the next year.
JWC:gms
nw1 U.rgLotRZ Jwc
Table 1 - Subdivisions Approve,-.a Agrticultural Areas since 1/29x91
A B C D E F G H JI
»otle'>
::::X.: :�1.....:.:...::...:...:..................::.::::::::::::::::::.::.;:
3:>E1'::':Epd.t1
2 .::::::.:. if.::.:.:::,::::.::,.:::i,1Fhi,....::..::.:::.,,.,,:::Arse:..:,.......................... .........................,.:..::.:...... ...... .:............................
..........
3
4 MS900076 267110005 ORNDA 113 14 28.25 A2 JAL YES
5 MS900079 007090033 BRTWD 16 13 5.33 A2 JAL YES
6 MS900080 007090032 BRTWD 15 3 5.00 A2 AL YES
7 MS900084 365040003 MRTNZ 165 3 55.00 A4 AL YES
8 MS900095 362140012 MRTNZ 102 3 34.00 A2 AL YES
9 MS900114 208210004 SNRMN 52 2 26.00 A4 AL YES
10 MS900122 007020013 BRTWD 221 4 55.25 A2 AL YES
11 MS900145 362110004 MRTNZ 162 4 40.50 A2 AL YES
12 MS900148 011150003 BYRON 50 4 12.50 A3 AC YES
13 MS900149 015040013 BRTWD 67 4 16.75 A3 AC YES
14 MS900151 080160016 CLYTN 15 3 5.00 A2 AL YES
15 MS900152 368010024 MRTNZ 16 3 5.33 A2 AL YES
16 MS900159 032290001 OKLY 11 2 5.50 A2 AL NO
17 MS900160 7090022 BRTWD 25 4 6.25 A2 AL NO
18 MS900164 020200029 OKLY 24 3 18.00 A2 AL YES
19 MS900165 020200030 OKLY 13 2 6.50 A2 AL YES
20 MS900166 020200027 OKLY 16 3 5.33 A2 AL YES
21 MS900167 020200028 OKLY 17 3 5.67 A2 AL YES
22 MS900170 015110018 KNTSN 10 2 5.00 A2 AL YES
23 MS900172 015110008 KNTSN 10 2 5.00 A3 AL YES
24 MS900175 2040047 BYRON 38 3 12.67 A2 AL YES
25 MS900180 362180001 MRTNZ 75 4 18.75 A2 AL YES
26 MS900182 007020024 BRTW 15 3 5.00 A2 AL YES
27 MS900190 020030005 KNTSN 11 2 5.50 A2 AL YES
28 MS900191 006150003 LIVAL 322 4 80.50 A80 AL YES
29 MS910003 011041001 BYRON 60 2 30.00 A3 AC YES
30 MS910006 006140008 LIVAL 153 2 76.50 A80 AL YES
31 MS910008 007140014 BRTWD 45 2 22.50 A4 AL YES
32 MS910009 201090040 KNTSN 53 4 13.25 A3 AL YES
33 MS910018 365030068 MRTNZ 268 2 134.00 A2 AL YES
34 MS910023 078140021 CLYTN 43 4 10.75 A2 AL YES
35 MS910033 002020003 BYRON 40 3 13.33 A3 AL YES
36 MS910044 033130057 OKLY 11 2 5.50 A2 AL NO
37 MS900157 078320001 CLYTN 32 4 8.00 A2 AL YES
36 Minor Sub Totals 2286 102
39
40 S1391 7641 015090001 KNTSN 92 9 A3 AL YES
41 SD907529 365030076 MRTNZ 63 6 A2 AL YES
42 SD907591 020140004 KNTSN 20 5 A3 AC YES
43 SD907595 011180051 BYRON 47 9 A2 AC YES
44 SD907615 007030050 JBRTWD 40 8 A2 AL YES
45 Major Sub Totals 262 37
46 ITOTALS 2548 139
47
Source: Contra Costa County
Table 2-Pending Subdivisions In....,ricuttural Areas
A B c D E F G H 1
1 A:.. :Aetbsf:::.::::........:...:.:.::.::::::::::.::,:::::::::::::...:::::::::.;;:
:......:....::.>:.>;;;:.>•.;;:.;:.;:.;;:.;;;:.;:.;:.;:.;:;.:;»:.;;:<.>:.;;;;;;::.:.::.;;;:.;;:.;:.;:.z;::;:.<::::z:a:>::>:>;::;::><>:<:>'::i»:<::::;>r>�«.:»::;:i:;`::::>.:»::>r:;.;:
..... ::.: <>::>::>r :.;::.::«:.: . :;::<::>::>::>::::> trill ::>::>:iz pd. .........ULL?......
Vi : : .....Acxe.........:::::: :Cels:.::,.:::.:: ot.::.:::::.:..��........ .................................................
3 MS890036 078070025 CLYTN 23.20 4 5.80 A2 AL
4 MS900141 199030040 SANRM 12.30 3 4.10 A4 AL
5 MS900169 209060001 SNRMN 15.00 3 5.00 A2 AL
6 MS900176 362150017 MRTNZ 104.70 4 26.18 A2 AL
7 MS900178 258060014 MRGA 27.00 4 6.75 A2 AL
8 MS900179 258050001 MRGA 40.001 4 10.00 A2 AL
9 MS900185 258020018 MRGA 52.36 4 13.09 A2 AL
10 MS900195 362140007 MRTNZ 7.80 4 1.95 A4 AL
11 MS900198 365370007 MRTNZ 13.70 2 6.85 A2 AL
12 MS900199 365370003 MRTNZ 28.26 4 7.07 A2 AL
13 MS910007 362130013 MRTNZ 43.46 2 21.73 A2 AL
14 MS910029 002020010 BYTON 15.97 3 5.32 A2 AL
15 MS910030 078280002 CLYTN 333.55 4 83.39 A4 AL
16 MS910040 365410004 MRTNZ 15.01 3 5.00 A2 AL
17 MS910055 078340001 CLYTN 20.00 4 5.00 A2 AL
18 MS920004 015110024 KNTSN 12.00 2 6.00 A3 AL
19 MS920010 075051004 ANT 200.00 4 50.00 A4 AL
20 MS920011 118050003 CONCD 15.93 2 7.97 A2 AL
21 MS920015 027020025 BTHIS 40.00 4 10.00 A3 DR
22 MS920019 011070011 BYRON 84.60 2 42.30 A4 AC
23 MS920021 002130010 BYRON 22.301 2 11.15 A2 AL
24 MS920024 080040034 CLYTN 20.00 2 10.00 A2 AL
25 MS920025 078140020 CLYTN 41.70 4 10.43 A2 AL
26 MS930003 080150010 CLYTN 19.00 2 9.50 A2 AL
27 MS930004 023070009 KNTSN 556.00 4 139.00 A3 DR
28 MS930006 365030068 MRTNZ 238.00 4 59.50 A2 AL
29 MS930009 365050002 MRTNZ 41.00 4 10.25 A4 AL
30 Minor Sub Totals 2,043 Be
31
32
33 SD887175 099160017 CNCR 64.00 9 7.11 P1 AL
34 SD907584 078040002 CLYTN 1030.00 115 8.96 A2 AL
35 Major Sub Totals 1,094 124
36
37 Totals for All Subdivisions 3,137 212
38
1
PUBLIC WORKS DEPARTWENT G Attach int.
CONTRA COSTA COUNTY ~ `%"/'
1n
DATE:~'May,10, 1993
L Cpl.
TO: Cutler, Chief Advanced Planning, Community Development
FROM: tcb ,
AvalonSenior Civil Engineer, Engineering Services Division
SUBJECT: Correct and Convey in East County
In 1983, the Board established a firm policy for not granting exceptions to the collect and
convey provisions of the Ordinance Code. At about the same time, staff determined that
parcel sizesof 10.acres or greater that are located east of Marsh Geek or in the Byron area,
could be developed,as their incremental increase in impervious surface areas would be
insignificant in the overall watershed. However, development of parcel sizes of less than 10
acres in size was determined to have a significant cumulative impact on the watershed. In
the far east County many of the natural watercourses have been altered by man many years
ago and relocated along property lines to facilitate agricultural activities. Many of these man
made ditches are still;called creeks, but are inadequate man made facilities nonetheless.
Examples of these are Kellogg Creek and Frisk Creek. The result is that much of East
County cannot satisfy the collect and convey drainage requirements and cannot, therefore,
develop below 10 acre size parcels.
Unfortunately many parts of East County are zoned agricultural and may, under certain
agricultural zoning districts.,develop down to 5 acre parcel sizes. We have encountered
problems in the past where minor subdivisions have been processed for parcel sizes of less
than 10 acres in size. :The applicants argue that the zoning allows them to subdivide to S
acre parcels and for some reason they were not told of the tremendous cost involved to
satisfy collect and convey. If the zoning were changed to 10 acre or larger parcel sizes in
these areas, this problem would not surface and the public would be better served until the
drainage infrastructure is in place.
RMAd
craxer w
.cc: B. Murphy, Englonring Services
P. Harrington, Flood Control
S Wrigh4 Engineering Services
i 5 I.0. - �/�"
G�1 3
—C � -
- _contra
TO: BOARD OF SUPERVISORS _
^ .� Costa
FROM: Internal Operations Committee
County
DATE: July 26 , 1993
SUBJECT: LARGE LOT REZONING
SPECIFIC REQUEST(S) OR RECOMMENDATIONS) & BACKGROUND AND JUSTIFICATION
RECOMMENDATIONS
Inform the Board of the large-1 rezoning options presented by the
Director of Community Deve+lopmen so that Board members can advise
the Committee of their thoughts on: this measure. Hold the issue in
I.O. for action on SeptembLk. 27-; 1 93 .
FISCAL IMPACT
Will vary depending on direction given to staff.
BACKGROUND/REASONS FOR RECOMMENDATIONS
On July 20, 1993, the Director of Community Development forwarded
a report to I.O. on options for large lot rezoning actions (copy
attached) . The ' Committee discussed this item but decided to
forward the report to the Board for information and to reconsider
the item at the September 27, 1993 I.O. meeting. Any feedback to
I.O. committee members would be appreciated.
The Briones Hills Agricultural Preservation Agreement was discussed
where 5-acre zoning was committed to by Supervisor Fanden and if
this was going to be reconsidered that those participants need to
be notified.
The issue of insuring assignment of one staff to do all these
actions was discussed so that staff continuity on these various
zoning approaches might yield cost savings'.
CONTINUED ON ATTACHMENT: YES SIGNATURE
RECOMMENDATION OF COUNTY ADMINISTRATOR RECOMMENDATION OF BOARD COMMITTEE
APPROVE OTHER
SIGNATURE(S) : SUNNE WRIGHT McPEAK JEFF SMITH
ACTION OF BOARD ON AuguGt 3, 1993 APPROVED AS RECOMMENDED OTHER
VOTE OF SUPERVISORS
I HEREBY CERTIFY. THAT THIS IS A
UNANIMOUS (ABSENT TRUE AND CORRECT COPY OF AN
AYES: NOES: ACTION TAKEN AND ENTERED ON THE
ABSENT: ABSTAIN: MINUTES OF THE BOARD OF
SUPERVISORS ON THE DATE SHOWN.
Orig: Jim Cutler (646-2035) ATTESTED v
Cc: Community Development Department PHIL BATCHELOR, CLERK OF
CAO THE BOARD OF SUPERVISORS
County Counsel AND COUNTY ADMINISTRATOR
Public Works
BY , DEPUTY
Ms11Large1ot.bo
CONTRA COSTA COUNTY
COMMUNITY DEVELOPMENT DEPARTMENT
DATE: July 20, 1993
TO: Internal Operations C m ee
FROM: Harvey E. Bragdo t unity Development
SUBJECT: LARGE LOT LTU LANDS REZONING
RECOMMENDATIONS
Provide direction on whether the Board wishes staff to proceed with additional large
lot rezoning efforts. Costs would be $5,000 to $10,000, depending on what effort
is needed.
FISCAL IMPACT
Staff time to do the studies and publication and notification costs to bring the
rezoning efforts to hearing.
BACKGROUND/REASONS FOR RECOMMENDATIONS
On June 22, 1993,,the Board acted on the Internal Operations Committee (IOC) report
of June 14, 1993 which acknowledged the A-40 Ag Core rezoning effort in process,
the Agricultural Task Force work program, requested the Community Development
Department to rezone major publicly owned lands as staff time became available, and
determined the County Planning Commission should be the hearing body for rezoning
actions which flow from the Countywide review of open space zoning practices.
The IOC continued'the discussion on subject of possible other rezoning actions which
the Board of Supervisors may wish to initiate until additional studies are completed.
As part of considering current and possible future rezoning actions, the Board directed
staff to study subdivision and rezoning activities outside the Urban Limit Line (ULL),
since January 1991 when the new County General Plan was adopted.
• Approved Subdivision Activity
Staff has compiled a list of approved subdivisions in areas which are designated
for agricultural use. Since January 29, 1991, 39 subdivision applications have
received approval. Table 1 shows the "Subdivision Approved in Agricultural
Designations Since Adoption of the County General Plan." These applications
will relate to, a display graphic which will be available at the IOC meeting. It
shows the distribution of subdivisions across the County both inside and
outside of the ULL. Significantly, it includes major subdivisions of agricultural
Table 1- Subdivisions ApproveL..a Agrticultural Areas since 1/29191
• A B; C D E F G H 1
wattle
::sssSnl
»I<: ` : : « <> ..X .
<jL >
3
4 MS900076 267110005 ORNDA 113 4 28.25 A2 AL YES
b 1 MS900079 007090033 BRTWD 16 3 5.33 A2 AL YES
6 MS900080 007090032 BRTWD 15 3 5.00 A2 AL YES
7 MS900084 365040003 MRTNZ 165 3 55.00 A4 AL YES
8 MS900095 362140012 MRTNZ 102 3 34.00 A2 AL YES
9 MS900114 208210004 SNRMN 52 2 26.00 A4 AL YES
10 MS900122 007020013 BRTWD 221 4 55.25 A2 AL YES
11 MS900145 362110004 MRTNZ 162 4 40.50 A2 AL YES
12 MS900148 011150003 BYRON 50 4 12.50 A3 AC YES
13 MS900149 015040013 BRTWD 67 4 16.75 A3 AC YES
141 MS900151 080160016 CLYTN 15 3 5.00 A2 AL YES
15 MS900152 368010024 MRTNZ 16 3 5.33 A2 AL YES
16 MS900159 032290001 OKLY 11 2 5.50 A2 AL NO
17 MS900160 7090022 BRTWD 25 4 6.25 A2 AL NO
18 MS900164 020200029 OKLY 24 3 8.00 A2 AL YES
19 MS900165 020200030 OKLY 13 2 6.50 A2 AL YES
20 MS900166 020200027 OKLY 16 3 5.33 A2 AL YES
21 MS900167 020200028 OKLY 17 3 5.67 A2 AL YES
22 MS900170 015110018 KNTSN 10 2 5.00 A2 AL YES
23 MS900172 015110008 KNTSN 10 2 5.00 A3 AL YES
24 MS900175 2040047 ' BYRON 38 3 112.67 A2 AL IYES
25 MS900180 362180001 MRTNZ 75 4 18.75 A2 AL YES
26 MS900182 007020024 BRTW 15 3 5.00 A2 AL YES
27 MS900190 020030005 KNTSN 11 2 5.50 A2 AL YES
28 MS900191 006150003 LIVAL 322 4 80.50 A80 AL YES
29 MS910003 011041001 BYRON 60 2 30.00 A3 AC YES
30 MS910006 006140008 LIVAL 153 2 76.50 A80 AL YES
31 MS910008 007140014 BRTWD 45 2 22.50 A4 AL YES
32 MS910009 201090040 KNTSN 53 4 13.25 A3 AL YES
33 MS910018 365030068 MRTNZ 268 2 134.00 A2 AL YES
34 MS910023 078140021 CLYTN 43 4 10.75 A2 AL YES
351 MS910033 002020003 BYRON 40 3 13.33 A3 AL YES
361 MS910044 033130057 OKLY 11 2 5.50 A2 AL NO
37 1 MS900157 078320001 ICLYTN 32 4 8.00 A2 AL YES
38 Minor Sub Totals 2286 102
39
40 SD917641 015090001 KNTSN 92 9 1 A3 AL YES
41 SD907529 365030076 MRTNZ 63 6 A2 AL YES
42 SD907591 020140004 KNTSN 20 5 A3 AC YES
43 SD907595 011180051 BYRON 47 9 A2 AC YES
44 SD907615 007030050 IBRTWD 40 8 A2 AL YES
45 Major Sub Totals 262 37
46 ITOTALS 2548 139
47
Source: Contra Costa County
Table 2-Pending Subdivisions in...-,,ricultural Areas
A B c D E F G H 1
' `,
1 ..:...... ............:::::: :::.::::::::::::.
IWX
2 «»::::... . :1�::>:«>;>::;:<»:::;::;::APt�.::.::::.::::::::::l►fmt.:::::::::::::::::. .....................
3 MS890036 078070025 CLYTN 23.20 41 5.80 A2 AL
4 MS900141 199030040 SANRM 12.30 3 4.10 A4 AL
5 MS900169 209060001 SNRMN 15.00 3 5.00 A2 AL
6 MS900176 362150017 MRTNZ 104.70 4 26.18 A2 AL
7 MS900178 258060014 MRGA 27.00 4 6.75 A2 AL
8 MS900179 258050001 MRGA 40.00 4 10.00 A2 AL
9 MS900185 258020018 MRGA 52.36 41 13.09 A2 AL
10 MS900195 362140007; MRTNZ 7.80 4 1.95 A4 AL
11 MS900198 365370007 MRTNZ 13.70 2 6.85 A2 AL
12 MS900199 365370003 MRTNZ 28.26 4 7.07 A2 AL
131 MS910007 362130013 MRTNZ 43.46 2 21.73 A2 AL
141 MS910029 002020010 BYTON 15.971 3 5.32 A2 AL
15 MS910030 078280002 CLYTN 333.55 41 83.39 A4 AL
16 MS910040 365410004 MRTNZ 15.01 3 5.00 A2 AL
171 MS910055 078340001 CLYTN 20.00 4 5.00 A2 AL
18 MS920004 015110024 KNTSN 12.00 2 6.00 A3 AL
19 MS920010 075051004 ANT 200.00 4 50.00 A4 AL
201 MS920011 118050003 CONCD 15.931 2 7.97 A2 AL
21 MS920015 027020025 BTHIS 40.001 4 10.00 A3 DR
22 MS920019 011070011' BYRON 84.601 2 42.30 A4 AC
23 MS920021 002130010 BYRON 22.30 2 11.15 A2 AL
24 MS920024 080040034 CLYTN 20.00 2 10.00 A2 AL
25 .MS920025 078140020 CLYTN 41.70 4 10.43 A2 AL
26 MS930003 080150010 CLYTN 19.00 2 9.50 A2 AL
27 MS930004 023070009 KNTSN 556.00 4 139.00 A3 DR
28 MS930006 365030068 1MRTNZ 238.001 4 59.50 A2 AL
29 MS930009 365050002 JMRTNZ 41.00 4 10.25 A4 AL
30 Minor Sub Totals 2,043 Be
31
32
33 1 SD887175 099160017, CNCR 64.00 9 7.11 P1 AL
341 SD907584 1078040002 CLYTN 1030.00 115 8.96 A2 AL
351 Ma'or Sub Totals 1,094 124
36
37 Totals for All;Subdivisions 3,137 212
38
PUBLIC WORKS DEPART .NT t.,�-R Attach ,�M';
CONTRA COSTA COUNTY
DATE: Vay10, 1993
TO: Cutler, Chief Advanced Planning, Community Development
FROM: tch Avalon, Senior Civil Engineer, Engineering Services Division
SUBJECT: Collect and Convey in East County
In 1983, the Board established a firm policy for not granting exceptions to the collect and
convey provisions of the Ordinance Code. At about the same time, staff determined that
parcel sizes of 10 acres or greater that are located east of Marsh Creek or in the Byron area,
could be developed,as their incremental increase in impervious surface areas would be
insignificant in the overall watershed. However, development of parcel sizes of less than 10
acres in size was determined to have a significant cumulative impact on the watershed. In
the far east County many of the natural watercourses have been altered by man many years
ago and relocated along property lines to facilitate agricultural activities. Many of these man
made ditches are still called creeks, but are inadequate man made facilities ncmetheless.
Examples of these are Kellogg Creek and Frisk Creek. The result is that much of East
County cannot satisfy the collect and convey drainage requirements and cannot,therefore,
develop below 10 acre size parcels.
Unfortunately many parts -of East County are zoned agricultural and may, under certain
agricultural zoning districts.,develop down to S acre parcel sizes. We have encountered
problems in the past where minor subdivisions have been processed for parcel sizes of less
than 10 acres in size. The applicants argue that the zoning allows them to subdivide to S
acre parcels and for some reason they were not told of the tremendous cost involved to
satisfy collect and;convey. If the zoning were changed to 10 acre or larger parcel sizes in
these areas, this problem would not surface and the public would be better served until the
drainage infrastructure is in place.
RMAW
CCutlert5
.Cc. B. Murphy, Engineering Services
P. Harrington, Flood Con&W
S. Wright Engineering Services