Mossdale Tract Area
Overlay Assessment District
City of Manteca City Council
May 21, 2024
ATTACHMENT 6
Recommendation
2 ➢ Consider ballots for the proposed San Joaquin Area Flood Control Agency (SJAFCA) Mossdale Tract Assessment
District formation (for City-owned properties), and authorize the City Manager or designee to execute / return completed ballots
ATTACHMENT 6
What is SJAFCA?
3 • Joint Powers Authority (1995)
• Stockton, Lathrop, Manteca
• San Joaquin County
• San Joaquin County Flood Control &
Water Conservation District
• Reduce and manage flood risk
• Plans, finances, and implements
flood risk reduction projects and
programs
• 9-member Board of Directors
ATTACHMENT 6
Mossdale Tract Area
4 • Portions of Stockton, Lathrop and Manteca
• More than 55,000 residents
• 22K properties (20K residential)
• 32 schools
• Hospital & medical centers
• Fire, police stations
• Manteca Wastewater Treatment Plant
• Correctional Facilities
• I-5 and Hwy 120
ATTACHMENT 6
Challenges
5 • State/federal regulations for flood
protection are becoming stricter
• Weather extremes are
unpredictable
• Every major storm event stresses
levee system
• Levees are the only/last defense
against flooding
• Existing level of flood protection
is not adequate
ATTACHMENT 6
Increasing Flood Risk
6 According to CA DWR:
• 3x more flood flows in SJ
River
• Additional 5’ of water at
French Camp Slough
• Estimated Annualized
Damages = $47M/year
• Life loss
ATTACHMENT 6
Problems to Avoid
7 • Physical damages from flooding
• San Joaquin River
• Tributaries (e.g. French Camp Slough)
• Economic impacts from failure to meet state/federal regulations • No allowance for changes in existing development footprint • Risk of FEMA remapping, mandatory flood insurance
ATTACHMENT 6
Cost of Flood Damage
Depth Cost
1 inch $10,819
6 inches $21,161
1 foot $29,360
2 feet $36,360
3 feet $39,831
4 feet $43,400
Source: FEMA, based on 1,000 SF home
8 ATTACHMENT 6
Cost for Flood Insurance
FEMA Special Flood Hazard Areas
✓ Mandatory insurance for properties
with mortgages/loans
✓ Costs increase 18% per year
✓ Won’t fully cover damages
✓ Slow payment of claims
Zip Code
Average
Current
Premium
Average RiskBased
Premium
Difference
95203 $ 959.13 $1,736.52 + $777.39
95204 $1,048.75 $1,655.84 + $607.10
Source: 2022 FEMA Risk Rating 2.0: Projected RENEWAL Premium Changes by Zip Code ATTACHMENT 6
Cost to the Economy
10 ATTACHMENT 6
How do we
protect lives,
property &
economy?
• Improve levees to
provide 200-Year
Flood Protection
• Maintain levees to
State & Federal
standards
11 ATTACHMENT 6
12 200-Year Levee
Improvement
Project
• $472.9 million over 10-Years
• Levees along San Joaquin River
& tributaries, extension of
Manteca dryland levee
• Project includes:
• Levee raises
• Cutoff Walls
• Seepage berms
• Erosion protection
• Extension of dryland levee
ATTACHMENT 6
Mossdale Tract Urban Flood Risk Reduction Project - Cost Share 13 State/Federal = $362.6 million
Local = $110.3 million
Based on updated cost estimate prepared by LWA for SJAFCA’s 2023 Annual Adequate Progress Report State
24.1%
Federal
52.6%
SJAFCA
23.3%
ATTACHMENT 6
Total Local Funding = $132.5 Million
• Development Impact Fees = $70.9 Million
• Enhanced Infrastructure Financing District = $21.7 Million • Overlay Assessment = $39.9 Million*
Mossdale Tract Urban Flood Risk Reduction Project – Local Funding *OAD reflects annual revenues and bond financing net of debt service during project implementation.
EIFD
16.3%
Development
Impact Fees
53.5%
OAD
30.1%
• Local Funding sources used to pay early
planning a design costs ($11.5 million) as
well as cash flow / finance the project
14 ATTACHMENT 6
Overlay Assessment District
➢ Assessment District covers approx. 22,500
Parcels.
➢ Services – 200-Year Project and its ongoing
maintenance
➢ Would raise approx. $2,625,000 / Yr (FY
2024/25 Budget)
➢ Subject to escalation based annual approval
by SJAFCA Board limited to CPI with 4%
cap.
➢ Term - for 30-years from the issuance of
bonds secured by the Assessments
➢ Bond issuance in late 2025/early 2026
ATTACHMENT 6
Assessment Weight by Land Use
16 Proposed FY 2024/25
Average 90th Percentile Assessment
Single Family Residential 18,285 $78 $124 $1,420,403 54.4% Industrial 244 $1,899 $6,563 $463,382 17.8%
Planned Commercial 86 $2,736 $4,444 $235,334 9.0%
Commercial 227 $896 $2,322 $203,330 7.8%
Vacant 3,209 $39 $39 $125,220 4.8%
Public 69 $1,634 $8,464 $112,753 4.3%
Planned Residential 91 $194 $617 $17,691 0.7%
Multifamily Residential 86 $131 $300 $11,255 0.4%
Agricultural 139 $70 $103 $9,789 0.4%
Mobile Homes 32 $173 $590 $5,550 0.2%
Planned Industrial 86 $50 $155 $4,305 0.2%
Total 22,554 $116 $2,609,012 100.0%
Land Use Category Parcel Count Proposed Assessment Rates / Parcel Share of Total Assessment
ATTACHMENT 6
Assessment Ranges (All Land Use)
17 94% will pay less than $12.50 per month ($150/year)
5,898
882
4,653
5,873
4,007
486
755
0 1,000
2,000
3,000
4,000
5,000
6,000
7,000
Parcel Count
Parcel Count by Assessment Range
All Land Uses - Parcel Counts
OAD Assessment Rates
ATTACHMENT 6
Prop 218 Process
18 ⮚ Only property owners vote, including
public agencies
⮚ Weighted vote ($1 assessment = 1 vote)
⮚ Ballots mailed to property owners - May
4 ⮚ Public Hearing at SJAFCA Special
Meeting – June 20
⮚ Ballot Tabulation (commencing June 21
until complete)
⮚ SJAFCA Board meeting/Balloting Results
– July 18
⮚ Majority Protest
⮚ Weight of ballots opposed exceed weight of
ballots in favor
ATTACHMENT 6
More Information
19 • Hotline: (209) 475-7009
• Email: [email protected]
• www.sjafca.org/OAD
• Frequently Asked Questions
• Boundary maps
• Preliminary Engineer’s Report
• Assessment calculator
ATTACHMENT 6
32 City Owned Parcels
➢ Includes Parks, FEZ parcels, water
infrastructure, and open space parcels.
➢ Combined Assessments for 2024-25 is
$16,462.
➢ Request City Council authority and
direction to complete and return ballots
ATTACHMENT 6
Questions &
Discussion
21 ATTACHMENT 6