HomeMy WebLinkAboutMINUTES - 06061986 - 2.3 Z-003
TO: BOARD OF SUPERVISORS
FROM: J. MICHAEL WALFORD, PUBLIC WORKS DIRECTOR
DATE: June 6, 1989
SUBJECT: MODIFY CONDITIONS OF APPROVAL FOR SUBDIVISION 7075
Specific Request(s) or Recommendation(s) & Background
Justification
I. RECOMMENDATION
Modify conditions of approval 14-A3B, 14-B, and 14-C to
allow the drainage from the back slope of lot 12 to drain to
the Sans Crainte watershed in the same manner as lots 8, 9,
10, and 11.
II. FINANCIAL IMPACT
None
III. REASONS FOR RECOMMENDATION/BACKGROUND
On August 2, 1988 this Board approved the tentative map for
Subdivision 7075 with conditions. The conditions of
approval specifically allowed the back slopes of lots -8,, 9,
10, and 11 to drain through the Boyland property into the
Sans Crainte watershed. The back slopes of lots 8, 9, 10,
and 11, together with portions of the neighboring properties
that also drain to the Boyland property, total 1.29 acres in
area. Prior to the subdivision, 5.19 acres of land drained
through the Boyland property into the Sans Crainte
watershed. The subdivision, as approved, reduces the area
draining to the Boyland property by 3.90 acres, or 75%.
The tentative map for Subdivision 7075 showed the drainage
from the subdivision street, Poppy Court, being collected in
a storm drain line between lots 11 and 12 which then ran
along the back of lots 12, 13, and 14 to Mountain View
Boulevard. After the subdivision was approved, the drainage
plans were finalized and reviewed by Public Works. During
this process it was decided the storm drain line should not
be installed between lots 11 and 12 and along the back of
lots 12, 13, and 14 to Mountain View Boulevard. Instead,
.the storm drain line should remain in Poppy Court and drain
.directly to Mountain View Boulevard.
There were three reasons for changing the location of the
storm drain line. First, it would be very difficult to
construct the storm drain along the back of lots 12, 13, and
14 which is at the toe of the graded slopes; second, there
are many trees located on the common property line with the
Graves property, opposite lot 14, which would be damaged by
the installation of the storm drain line; third, Public
Works policy dictates that all storm drain lines should be
located in the street area, to the greatest extent possible,
for ease of maintenance and ease of repair or replacement.
A storm drain line along the back of lots 121 13, and 14
would be very difficult for County forces to maintain and
very expensive to repair.
The result, however, of changing the storm drain line from
the back of lots 12, 13, and 14 to Poppy Court, is that the
surface flows from the back slope of lot 12 would be added
to the ditch collecting the drainage from the back slope of
lots 8, 9, 10, and 11. The back slope of lot 12 is . 11
acres in area. This would slightly increase the area
draining to the Boyland property from 1.29 acres to 1.40
acres, but would still be a 3.79 acre, or 73% reduction from
the previously undeveloped drainage pattern. The Public
Works Department recommends the conditions of approval be
modified to allow the back slope of lot 12 to also drain to
the Sans Crainte watershed as a result of the redesign of
the subdivision storm drainage system.
Continued on attachment: X yes Signature: �/���/J
Action of Board on: June 6, 1989
Approved as Recommended_ Other
Michael Walford, Director of Public Works, presented the staff
report on the recommendation to modify conditions of approval for
Subdivision 7075, explaining the need for the changes.
Mr. Robert W. Jardine, 2042 Hermine Avenue, Walnut Creek,
commented on a written statement which he requested be a part of the
record expressing his concerns and opposition to amend any condition
of approval without sufficient assurances that the rights for his
property which were achieved through the due process of approval are
not diminished by this action.
Supervisor Schroder recommended deferring action on the matter to
later in the afternoon to allow for himself, Mr. Jardine and Mr.
Walford to meet and confer on the various concerns expressed by Mr.
Jardine.
Later that afternoon after meeting with the involved parties,
Karl Wandry, Community Development Department, advised that staff
would attempt to resolve Mr. Jardine' s concerns and recommended
approval of the modifications to the conditions of approval.
Therefore, IT IS BY THE BOARD ORDERED that the above
recommendation is APPROVED; and the conditions of approval for
Subdivision 7075 in the Walnut Creek area are MODIFIED as listed in
the recommendation.
Vote of Supervisors I HEREBY CERTIFY THAT THIS IS
A TRUE AND CORRECT COPY -OF AN
X Unanimous (Absent ) ACTION TAKEN AND ENTERED ON
Ayes: Noes: THE MINUTES OF THE BOARD OF
Absent: Abstain: SUPERVISORS ON DATE SHOWN.
Attested June 6, 1989
PHIL BATCHELOR,
CLERK OF THE BOARD
OF SUPERVISORS AND
COUNTY ADMINISTRATOR
BY
DE Y CLEJRK
ORIG. DEPT: PUBLIC WORKS (ES)
CC:' Community Development Department
Flood Control
Carmen Boyland/Rob Jardine
2042 Hermine Ave.
Walnut Creek, CA 94596
Aliquot Associates
1499 Danville Blvd.
Alamo, CA, 94507
BO:'6.t6