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TABLE 8
<br />Stormwater Drainage Systems Development Charge Analysis
<br />1. Existing Stormwater Drainage System Value 8r SDC- Eligible Costs (Reimbursement Fee)
<br />Total Replacement Cost - Existing Pipe System
<br />$316,829,595
<br />Total Replacement Cost - Existing Open Channel Systems
<br />$90,563,950
<br />Total Replacement Cost, Existing (Replacement Cost New)
<br />$407,393,544
<br />Percent of Existing Pipe System to be Used by New Development
<br />4.27%
<br />Percent of Existing Open Channels stem to Used by New Development
<br />2.34%
<br />Total SDC-Eligible Cost - Existing Pipe*
<br />$13,528,625
<br />Total SDC - Eligible Cost- Existing Open Channel Systems*
<br />$2,119,197
<br />Total SDC - Eligible Cost, Existing System
<br />* Based on percent available capacity per hydraulic model
<br />$15,647,821
<br />2. Future Stormwater System SDC - Eligible Project Costs (Improvement Fee)
<br />Total Est. Cost, Future System (SDC - Eligible Projects) (From Table 9)
<br />- $38,629,337
<br />SDC - Eligible Portion of Project Cost, Future System (excluding LID capacity) (From Table 9)
<br />$17,230,331
<br />SDC - Eligible Portion of Project Cost for Future System LID Capacity (From Table 9)
<br />$7,802,525
<br />3. Stormwater System Calculation Details
<br />Single-Family Dwelling SFD), estimated average impervious surface area
<br />Small Residential (building footprint < 1,000 sq. ft.)
<br />1,800 sq. ft.
<br />Medium Residential (building footprint >1,000 sq. ft. and <3,000 sq.ft.)
<br />2,900 sq. ft.
<br />Mfg. Home Park Space, estimated average impervious surface area
<br />1,780 sq. ft.
<br />Total Additional Impervious Surface Area within UGB (build -out)
<br />155,770,560 sq. ft.
<br />Total Additional Impervious Surface Area within UGB (build -out) requiring LID capacity
<br />4,650,000 sq. ft.
<br />4. Calculation of SDC*
<br />Unit Cost per Square Foot, Improvement Fee
<br />[$17,230,331 / 155,770,5601
<br />$0.1106
<br />Unit Cost per Square Foot, Improvement Fee for LID capacity component
<br />[$7,802,525 /4,650,000]
<br />$1.6780
<br />Unit Cost per Square Foot, Reimbursement Fee
<br />[$15,647,821 / 155,770,560]
<br />$0.1005
<br />Total Unit Cost per Square Foot for General Capacity [Improvement+ Reimbursement]
<br />$0.2100
<br />Total Unit Cost per Square Foot with LID component [Improvement + LID + Reimbursement]
<br />$1.888
<br />Small Residential SDC (building footprint < 1,000 sq. ft.)
<br />1,800 sq. ft. x $0.2100]
<br />$378.00
<br />Medium Residential SDC (building footprint >1,000 sq. ft. and <3,000 sq.ft.)
<br />[2,900 sq.ft x$0.2100]
<br />$609.00
<br />Small Duplex SDC (unit building footprints < 1,000 sq. ft.)
<br />[$378.00 x 21
<br />$756.00
<br />Medium Duplex SDC (unit building footprints >1,000 sq. ft. and < 3,000 sq.ft.)
<br />[$609 x 2]
<br />$1,218.00
<br />Mfg. Home Park SDC per Space (portion of total charge)
<br />[1,684 sq. ft. x $0.21001
<br />$353.64
<br />Small Residential SDC with LID (building footprint < 1,000 sq. ft.)
<br />[1,800 sq. ft. x $1.888]
<br />$3,398.40
<br />Medium Residential SDC with LIC (building footprint >1,000 sq. ft. and < 3,000 sq.ft.)
<br />[2,900 sq.ft x $1.888]
<br />$5,475.20
<br />Small Duplex SDC with LID (unit building footprints < 1,000 sq. ft.)
<br />[$3,398.00 x 2]
<br />$6,796.80
<br />Medium Duplex SDC with LID (unit building footprints >1,000 sq. ft. and < 3,000 sq.ft.)
<br />[$5,475.20 x 2]
<br />$10,950.40
<br />Mfg. Home Park SDC per Space (portion of total charge) with LID
<br />[1,684 sq. ft. x $1.8881
<br />$3,179.39
<br />*See Appendix F for complete rate schedule.
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