HomeMy WebLinkAboutDrainage Report V1 Approvedkimley-horn.com 950 W Bannock St., Suite #1100 | Boise, Idaho 83702 801-915-7842
Oakwind Estates
Subdivision
Meridian, ID
Prepared By:
Kimley-Horn Associates
950 W Bannock St
Suite 1100
Boise, ID 83702
Contact: Brandon McDougald, P.E.
(801) 915-7842
Job No. 093893000
February 04, 2022
05/12/22
FP-2022-0006
kimley-horn.com 950 W Bannock St., Suite #1100 | Boise, Idaho 83702 801-915-7842
I. GENERAL LOCATION AND DESCRIPTION
This drainage study is being prepared for both Phase 1 and Phase 2 of the Oakwind Estates
Subdivision in Meridian, Idaho. The site is located to the northeast of the intersection of
McDermott Road and McMillan Road. It is bound to the north by a commercial development,
east by Phases 1 and 2 of the Oaks North Subdivision, west by McDermott Road, and south by
McMillan Road. This project consists of approximately 24.36 acres and 185 lots. The site is
located within section 28, Township 4 North, Range 1 West Meridian, Ada County, Idaho.
The proposed development will consist of approximately 212 residential and common lots with
the associated roadways and utilities.
The site currently slopes mostly to the west at a grade of ±0.25-1%. The site is currently a
portion of an undeveloped field used historically for agricultural purposes. The site is in zone
“X”, an area determined to be outside the 0.2% annual chance floodplain, according to the
Flood Insurance Rate Map, Map Number 16001C0140J, which bears an effective date of June
19, 2020.
II. HISTORIC DRAINAGE
Currently, the site is undeveloped, and is bounded by McDermott Rd to the west and McMillan,
to the south. This site generally slopes from the east to the west at a rate of approximately
0.25-1°%. In the existing condition it appears that storm water runoff will mostly infiltrate into
the undeveloped ground. Any runoff appears to drain to ditches along McMillan or McDermott
where it is eventually conveyed by a culvert under McDermott to the west. No
detention/retention was found to be existing on the current site.
III. DRAINAGE DESIGN CRITERIA
Ada County Highway District (ACHD) requires that new developments provide primary
conveyance for the 100-yr storm event and retention for the 100-yr storm event. The site has
been designed to these standards with detention volumes being determined for the 1-hr 100-yr
event per the ACHD Calculation Sheet for Finding Peak Discharge/Volume Spreadsheet. This
volume was used to design the infiltration beds. The infiltration rate and high groundwater
elevation for this design were taken from the geotechnical reports BI80977g (July 20, 2018) and
B210822g. (April 16, 2021) prepared by Materials Testing and Inspection, Inc.
The Rational Method was used in calculating the required retention volume for the site. The
site was delineated into drainage areas based upon the proposed grading and drainage design.
The C-factor was taken to be 0.5 which is the higher end for single family residential listed in
the ACHD “Estimated Runoff Coefficients for Various Surfaces” table. Along the McDermott
05/12/22
FP-2022-0006
kimley-horn.com 950 W Bannock St., Suite #1100 | Boise, Idaho 83702 801-915-7842
frontage where the residential C-factor did not apply, a composite C-factor was determined
using 0.9 for the roadway and 0.35 for the planted areas.
The required volume and the provided volume of retention for each drainage area has been
calculated and is shown in the appendixes along with all design assumptions.
III. PROPOSED DRAINAGE
The proposed drainage infrastructure will consist of an on-site storm drain system discharging
into an underground infiltration bed for each of the drainage areas.
Prior to releasing water into the on-site underground infiltration beds, the water will be treated
by a sand/oil separator unit per ISPWC SD-606. This treatment unit will be capable of treating
the 25-year event. Since the seepage beds are located in common lots, no silt factor was used
in sizing the infiltration beds per the requirements of the ACHD design requirements.
The design infiltration rates were taken to be between 1-8in/hr per the geotechnical report No.
BI80822g prepared by Materials Testing & Inspection, Inc prepared April 16
th
2021. Each bed
was assigned an infiltration rate in this 1-8in/hr range based upon its location on site in relation
to the closest infiltration test. Given this infiltration rate each infiltration bed will drain in under
the required 48 hrs.
05/12/22
FP-2022-0006
kimley-horn.com 950 W Bannock St., Suite #1100 | Boise, Idaho 83702 801-915-7842
IV. APPENDIX
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 1.17 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 2,022 2,022 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 19.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 8.00 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 35.6 35.6 ft3/ft
15 Calculate Design Length L 57 57 ft 56.79775281
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 57 57.0 ft
17 Variable Infiltration Window W SWW 19.0 19.0 ft
18 Time to Drain 2.5 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 57 57 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP01.1.xlsm
Version 10.0, May 2018
2/3/2022, 4:18 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 1.75 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 3,024 3,024 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 13.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 8.00 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 24.4 24.4 ft3/ft
15 Calculate Design Length L 124 124 ft 123.9344262
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 124 124.0 ft
17 Variable Infiltration Window W SWW 13.0 13.0 ft
18 Time to Drain 2.5 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 124 124 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP01.2.xlsm
Version 10.0, May 2018
2/3/2022, 4:19 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 5.99 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 10,351 10,351 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 60.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 5.50 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 99.7 99.7 ft3/ft
15 Calculate Design Length L 104 104 ft 103.8214644
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 104 104.0 ft
17 Variable Infiltration Window W SWW 60.0 60.0 ft
18 Time to Drain 3.3 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 104 208 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP02.xlsm
Version 10.0, May 2018
2/3/2022, 4:22 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 1.93 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 3,335 3,335 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 17.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 1.00 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 22.0 22.0 ft3/ft
15 Calculate Design Length L 152 152 ft 151.5909091
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 152 152.0 ft
17 Variable Infiltration Window W SWW 17.0 17.0 ft
18 Time to Drain 13.9 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 152 100 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP03.xlsm
Version 10.0, May 2018
2/3/2022, 4:24 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 2.19 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 3,784 3,784 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 25.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 6.50 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 43.7 43.7 ft3/ft
15 Calculate Design Length L 87 87 ft 86.59038902
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 87 87.0 ft
17 Variable Infiltration Window W SWW 25.0 25.0 ft
18 Time to Drain 2.9 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 87 87 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP04.xlsm
Version 10.0, May 2018
2/3/2022, 4:27 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 0.93 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 1,607 1,607 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 10.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 6.50 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 17.6 17.6 ft3/ft
15 Calculate Design Length L 91 92 ft 91.30681818
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 92 92.0 ft
17 Variable Infiltration Window W SWW 10.0 10.0 ft
18 Time to Drain 2.9 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 92 92 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP05.xlsm
Version 10.0, May 2018
2/3/2022, 4:29 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 3
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 1.51 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 2,609 2,609 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 20.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 7.50 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 36.7 36.7 ft3/ft
15 Calculate Design Length L 71 72 ft 71.08991826
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 72 72.0 ft
17 Variable Infiltration Window W SWW 20.0 20.0 ft
18 Time to Drain 2.6 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 72 72 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP06.xlsm
Version 10.0, May 2018
2/3/2022, 4:30 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.65 Link to:
5 Area A (Acres) 0.63 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 1,415 1,415 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 10.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 1.00 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 13.0 13.0 ft3/ft
15 Calculate Design Length L 109 109 ft 108.8461538
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 109 109.0 ft
17 Variable Infiltration Window W SWW 10.0 10.0 ft
18 Time to Drain 14.0 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 109 109 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP07.xlsm
Version 10.0, May 2018
2/3/2022, 4:32 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.65 Link to:
5 Area A (Acres) 0.26 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 584 584 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 10.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 8.00 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 18.8 18.8 ft3/ft
15 Calculate Design Length L 31 32 ft 31.06382979
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 32 32.0 ft
17 Variable Infiltration Window W SWW 10.0 10.0 ft
18 Time to Drain 2.5 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 32 32 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP08.xlsm
Version 10.0, May 2018
2/3/2022, 4:33 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.65 Link to:
5 Area A (Acres) 0.84 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 1,887 1,887 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 10.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 3.00 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 14.7 14.7 ft3/ft
15 Calculate Design Length L 128 129 ft 128.3673469
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 129 101.0 ft
17 Variable Infiltration Window W SWW 10.0 10.0 ft
18 Time to Drain 6.7 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 129 101 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_SP09.xlsm
Version 10.0, May 2018
2/3/2022, 4:35 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 2.02 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 3,491 3,491 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 39.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 3.00 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 56.7 56.7 ft3/ft
15 Calculate Design Length L 62 62 ft 61.5696649
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 62 62.0 ft
17 Variable Infiltration Window W SWW 39.0 39.0 ft
18 Time to Drain 5.2 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 62 62 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_PH2_SP1.xlsm
Version 10.0, May 2018
2/3/2022, 4:37 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 1.75 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 3,024 3,024 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 17.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 3.30 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 25.3 25.3 ft3/ft
15 Calculate Design Length L 120 120 ft 119.5256917
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 120 120.0 ft
17 Variable Infiltration Window W SWW 17.0 17.0 ft
18 Time to Drain 4.9 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 120 120 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_PH2_SP2.xlsm
Version 10.0, May 2018
2/3/2022, 4:39 PM
05/12/22
FP-2022-0006
Steps for Seepage Beds
Calculate Post-Development Flows (for pre-development flows, increase number of storage facilities to create new tab)
User input in yellow cells.
1 Project Name
2 Enter number of Seepage Beds (25 max) 1
3 Design Storm 100 'Q,V'
4 Weighted Runoff Coefficient C 0.50 Link to:
5 Area A (Acres) 2.69 acres
6 Approved discharge rate (if applicable) 0.00 cfs
7 Is Seepage Bed in Common Lot? Yes V 4,648 4,648 ft3
0% Sediment
8 Set Total Design Width of All Drain Rock W 22.0 ft
9 Set Total Design Depth of All Drain Rock D 3.0 ft
Rock Only, Do Not Include Filter Sand Depth or Cover
10 Void Ratio of Drain Rock Voids 0.4
0.4 for 1.5"-2" drain rock and 3/4" Chips
11 Design Infiltration Rate (8 in/hr max) Perc 3.40 in/hr
12 Size of WQ Perf Pipe (Perf 180⁰) Dia pipe 18 in 1.8
13 Size of Overflow Perf Pipe (Perfs 360⁰), REQD if Q100>3.3 cfs in 0.0
14 Calculate Total Storage per Foot Spf 32.8 32.8 ft3/ft
15 Calculate Design Length L 142 142 ft 141.7073171
Override Value Required for Chambers
16 Variable Infiltration Window L SWL 142 142.0 ft
17 Variable Infiltration Window W SWW 22.0 22.0 ft
18 Time to Drain 4.7 hours
90% volume in 48-hours minimum OK
19 Length of WQ & Overflow Perf Pipes 142 142 ft
20 Perf Pipe Checks. Qperf >= Qpeak; OK
where Qperf=CdxAx√(2xgxH) d 0.0313 ft
Optional Storage Chambers
Note: This assumes chambers are organized in a rectangular layout.
1 Type of Chambers
1-StormTech,
SC740
2 Volume to Store V 0 ft3
3 Installed Chamber Width Cw 4.25 ft
Installed Chamber Depth Cd 2.50 ft
Installed Chamber Height Ch 7.12 ft
4 Chamber Void Factor
5 Chamber Storage Volume, Without Rock, Per Manuf 45.90 ft3/Unit
6 Chamber Storage Volume, With Rock, Per Manuf 74.90 ft3/Unit
7 Total Number of Units Required 0 ea
8 Area of Infiltration Aperc ft2
9 Volume Infiltration Vperc 0 ft3/hr
10 Time to Drain #DIV/0! hours
90% volume in 48-hours minimum #DIV/0!
ACHD Calculation Sheet for Sizing Seepage Bed With Optional Chambers
Note this spreadsheet pulls information from the "Peak Q,V" tab
Oakwind Estates
NOTE: This worksheet is intended to be a guideline to standardize ACHD checking of drainage calculations and shall not replace the
Engineer's calculation methodology. These calculations shall establish a minimum requirement. The Engineer’s methodology must result in
facilities that meet or exceed these calculations in order to be accepted.
K:\BOI_Civil\093893000 Oakwind BB Living\_Project Files\Eng\Drainage\ACHD Calcs\ACHD_SD_CALCS_PH2_SP3.xlsm
Version 10.0, May 2018
2/3/2022, 4:40 PM
05/12/22
FP-2022-0006
BLOCK 1
BLOCK 2
BLOCK 9
BLOCK 9
BLOCK 4
13
2
4
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7
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14
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10
9
5
6
51
51
52
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4
1
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1
1
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1
1
1
1
BLOCK 1
BLOCK 1
BLOCK 3
BLOCK 2
3
2
2
9
1
26
16 15 14 12
13
8 7 6 5 4 3 2
11 10
23
24 31
25 32
33
18
34
19
27
35
20
21 28
22 29
30
National Flood Hazard Layer FIRMette
0 250 500 1,000 1,500 2,000
Feet
Ü
SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT
SPECIAL FLOOD
HAZARD AREAS
Without Base Flood Elevation (BFE)
Zone A, V, A99
With BFE or Depth Zone AE, AO, AH, VE, AR
Regulatory Floodway
0.2% Annual Chance Flood Hazard, Areas
of 1% annual chance flood with average
depth less than one foot or with drainage
areas of less than one square mile Zone X
Future Conditions 1% Annual
Chance Flood Hazard Zone X
Area with Reduced Flood Risk due to
Levee. See Notes. Zone X
Area with Flood Risk due to LeveeZone D
NO SCREEN Area of Minimal Flood Hazard Zone X
Area of Undetermined Flood Hazard Zone D
Channel, Culvert, or Storm Sewer
Levee, Dike, or Floodwall
Cross Sections with 1% Annual Chance
17.5 Water Surface Elevation
Coastal Transect
Coastal Transect Baseline
Profile Baseline
Hydrographic Feature
Base Flood Elevation Line (BFE)
Effective LOMRs
Limit of Study
Jurisdiction Boundary
Digital Data Available
No Digital Data Available
Unmapped
This map complies with FEMA's standards for the use of
digital flood maps if it is not void as described below.
The basemap shown complies with FEMA's basemap
accuracy standards
The flood hazard information is derived directly from the
authoritative NFHL web services provided by FEMA. This map
was exported on 1/11/2022 at 10:34 AM and does not
reflect changes or amendments subsequent to this date and
time. The NFHL and effective information may change or
become superseded by new data over time.
This map image is void if the one or more of the following map
elements do not appear: basemap imagery, flood zone labels,
legend, scale bar, map creation date, community identifiers,
FIRM panel number, and FIRM effective date. Map images for
unmapped and unmodernized areas cannot be used for
regulatory purposes.
Legend
OTHER AREAS OF
FLOOD HAZARD
OTHER AREAS
GENERAL
STRUCTURES
OTHER
FEATURES
MAP PANELS
8
B
20.2
The pin displayed on the map is an approximate
point selected by the user and does not represent
an authoritative property location.
1:6,000
116°28'38"W 43°39'13"N
116°28'1"W 43°38'47"N
Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020
05/12/22
FP-2022-0006
17
BLOCK 4
BLOCK 6
BLOCK 7
BLOCK 8
14
13 6
12 5
11 4
10 3
2
17
9
1
15 8
7
3 2 1
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34 33 32 31 30 29
28 27 26 25 24 23 22 21 20 19
18 17 16 15
14 13 12
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1
52
51
36
BLOCK 5
1
N DELPHI AVE
W RIVA CAPRI ST
W APGAR CREEK ST
W DAPHNE ST
W DAPHNE ST
N PALUSTRIS WAY
N PALUSTRIS WAY
N PALUSTRIS WAY
BLOCK 8
BLOCK 8
BLOCK 5
BLOCK 6
BLOCK 7
7
8
9
6
3
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21 22
7 6 5 4
20
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13 12
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6 5 4
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7
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12 11 10 9 8
14
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10 9
6 5 4
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15 14
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BLOCK 4
BLOCK 8
W MILANO ST
W SOPRANO ST
W AVILLA ST
N DELPHI AVE
N PATIMOS AVE
W RIVA CAPRI ST
N DELPHI AVE
APN:
S0429440000
APN:
S0428325610
APN:
S0428325460
EXISTING OAKS NORTH
SUBDIVISION NO. 1
(NOT A PART)
EXISTING OAKS NORTH
SUBDIVISION NO. 2
(NOT A PART)
EXISTING OAKS WEST SUBDIVISION NO. 1 (NOT A PART)
N TRIDENT WAY
W MILANO DRIVE
16
7
OAKWIND ESTATES
MERIDIAN, ID
CALL 2 BUSINESS DAYS
IN ADVANCE BEFORE
YOU DIG, GRADE, OR
EXCAVATE FOR THE
MARKING OF
UNDERGROUND
MEMBER UTILITIES
Call beofre you dgi.
Know whas't below .
R
FOR REVIEW ONLY
NOT FOR
CONSTRUCTION
PROPOSED DRAINAGE AREA MAP
1
1
NORTH
05/12/22
FP-2022-0006