HomeMy WebLinkAboutRESOLUTIONS - 03272001 - 2001-133 (2) 1
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CON'T'RA COSTA COUNTY FLOOD
CONTROL AND WAFER
CONSERVATION DISTRICT
ENGINEER'S REPORT FOR
UPDATING DR.A►INAGE FEE
ORDINANCE AND PLAN AMENDMENT
No. 2
FOR DRAINAGE AREA 52C
Prepared by Kevin Emigh
Contra Costa Flood Control District
255 Glacier Drive
Martinez, California 94553
March, 2001
Resolution 2001 / 133
Engineer's Report
Drainage Area 52C
March, 2001 Page 1
I RECOMMENDATION
It is recommended that:
A. The existing Drainage Fee Ordinance (No. 90-39) for Drainage Area 52C be
repealed.
B. A new drainage fee ordinance, updated to reflect the cost of the Drainage Area 52C
Improvements and a three-eighths contribution to the Marsh Creek Improvements,
be adopted in the amount of$0.80 per square foot of impervious area.
C. Adopt a new drainage plan (Plan Amendment No. 2) reflecting the relocation and
amendment of some of the drainage lines and detention basins and modifying the
Drainage Area Boundary.
II DRAINAGE AREA LOCATION AND DESCRIPTION
Drainage Area 52C is located in eastern Contra Costa County in the Brentwood Area. It
is generally south of Marsh Creek and east of State Route 4. A more specific location is
shown on Contra Costa County Flood Control and Water Conservation District drawing
FDA 3077.
The Drainage Area lies within the City limits of Brentwood. Drainage Area 52C
encompasses approximately 1500 acres. The terrain is very level. One-third of the
drainage area has already been developed. The remainder is currently being planned
for development.
Most of the drainage area is designated for single family residential development.
Commercial and high-density residential areas are designated along State Route 4 and
the railroad right of way. Liberty High School and half of the downtown area are also
within the drainage area.
Resolution2001 / 133
Engineer's Report
Drainage Area 52C
March, 2001 Page 2
III REASONS FOR CHANGE IN PLAN AND DRAINAGE FEE
The change in fee amount is due to several factors. The plan itself is being amended to
reflect changes in the City General Plan that have occurred subsequent to the last plan
amendment. This included changes in development density, as well as expansion of
infrastructure at both the southerly and northerly portions on the Drainage Area
boundary to accommodate properties within the urban limit line and within the City of
Brentwood which otherwise would be without drainage facilities. In addition, future road
extensions and provisions for school and parklands within portions of the drainage area
required relocation of some storm drain lines and detention basins to conform to the
new general plans.
Much development has already occurred in the southerly portion of the drainage area.
The plan revision accounts for the "as-built" storm drain system, rather than the
schematic system on the currently adopted plan.
The fee changes are necessary to account for not only the physical amendments to the
facilities included within the drainage plan, but also for inflation which has occurred in
the ten years since the previous fee amendment.
The basis for the impervious surface fee ordinance is the report of December 1981 and
revised in January 1982 entitled "Report on Impervious Surface Drainage Fee
Ordinance" on file at the Clerk of the Board of Supervisors.
The proposed fee for Drainage Area 52C is $0.88 per square foot of impervious surface.
This fee includes a $0.06 per square foot of impervious surface contribution to Marsh
Creek Regional Improvements.
Resolution 2001 / 133
Engineer's Report
Drainage Area 52C
March, 2001 Page 3
IV FEE COLLECTION AND REIMBURSEMENT
The total fee of $0.80 per square foot of impervious surface created will be collected at
one time and $0.74 will be deposited in the Drainage Area 52C Fund. Improvements
that are part of the Drainage Area 52C plan will be eligible for credit and reimbursement
from the Drainage Area 52C Fund. The balance $0.06 per square foot of impervious
surface credited will be deposited into Flood Control Zone 1 for improvements to the
Marsh Creek System.
V COST ESTIMATE
A detailed engineer's estimate is attached as Appendix "A". The cost estimate is based
on year 2001 prices. The total cost of improvements and necessary rights-of-way is
$9,500,000.
VI UPDATING THE EXISTING FEE
The existing drainage fee ordinance (No. 90-39) specifies a fee of$0.35 per square foot
of impervious area. The new fee of$0.74 was determined by dividing the total project
costs of$9,500,000 by the estimated remaining impervious surfaces to be created in
the watershed, 12,800,000 square feet, and adding $0.06 for the Marsh Creek system.
VII FUTURE UPDATING OF PROPOSED FEES
The standard impervious surface drainage fee ordinance has been modified to include a
paragraph that authorizes annual fee updates using the Engineering News Record
Construction Cost Index. The updates will occur annually on January 1. The new
paragraph is Section X, Review of Fees.
Resolution 2001 / 133
Engineer's Report
Drainage Area 52C
March, 2001 Page 4
VIII CALIFORNIA ENVIRONMENTAL QUALITY ACT
The proposed action of amending the plan for Drainage Area 52C and adopting a new
drainage fee ordinance does not constitute a project under California Environmental
Quality Act pursuant to Article 5, Section 15061(b)(3)of the Act's guidelines and these
activities are not a project as defined in Section 20, 15378(b)(4) of the CEQA
Guidelines.
G:\GrpData\FIdCd\Administration\DA 52C Package.doc
Resolution 2001 / 133
APPENDIX A
Cost Estimate
Resolution 2001 / 133