Lakehaven Certificate of Water and Sewer Availability issued October 26, 2018RECEIVED
NOV 0 8 2018
Lakehaven CITY OF FEDERAL WAY
COMMUNITY DEYELOPMEP+f'
WATER & SEWER DISTRICT
Lakehaven Water & Sewer District — Development Engineering Section
31623 — 1st Ave S * PO Box 4249 * Federal Way, WA 98063-4249
Telephone: 253-945-1581 or 253-945-1580 * Email: DE@Lakehaven.org
This certificate is intended to provide the applicant, land use agencies &/or public health departments with
information necessary to evaluate development proposals. Lakehaven Water & Sewer District, at its sole
discretion, reserves the right to delay, or deny, water service based upon capacity &/or supply limitations
in Lakehaven's or Other Purveyor's system facilities.
Proposed Land Use: ❑ Building Permit-SFR ❑ Building Permit-MFR ❑ Building Permit -Other
❑ Subdivision ❑ Short Subdivision ❑ Binding Site Plan
❑ Rezone ❑ Boundary Line Adjustment
® Other (specify/describe) Land Use Review
Tax Parcel Number(s): !Qz_!Q49[)1.1 ;i(.) lU�i91.r1(� Site Address: 2nd Ave SW & SW 35611' St Lakehaven GIS Grid: H-13
Ex. Bldg. Area to Remain: Unknown sf New Bldg. Area Proposed: 26R.000 +/- sf, 21 blda5242 units
Applicant's Name: Villaae Green of Federal_ffi2
WATER SYSTEM INFORMATION
1. ® Water service can be provided by service connection to an existing 8" diameter water main onsite.
2. ® If an additional fire hydrant is required, water service for the site will require an improvement to Lakehaven's water
distribution system of:
❑ a. feet of " diameter water main to reach the site; and/or
❑ b. The construction of a water distribution system on the site; and/or
❑ c. A major portion of Lakehaven's comprehensive water system plan would need to be implemented and/or
constructed; and/or
® d. Other (describe):.I, k.e.l.i v._Eri_Qe�elf it xkensiori Ameentent reatilred.
3. N a. The existing water system is in conformance with Lakehaven's Comprehensive Water System Plan.
❑ b. The existing water system is not in conformance with Lakehaven's Comprehensive Water System Plan and an
Amendment to this Plan will be required. This may cause a delay in issuance of land use approvals or permits.
4. N a. The subject property is within the corporate limits of Lakehaven Water & Sewer District, or has been granted
Boundary Review Board approval for extension of water service outside of Lakehaven's water service area.
❑ b. Annexation or Boundary Review Board approval will be necessary to provide service.
5. Water service Is subject to:
N a. Payment of connection charges (to be determined by Lakehaven);
N b. Proof or reservation of easement(s) as required by Lakehaven;
N c. Other: Water Service Connection Application required, new/modified r e
Comments/special conditions: Service pressure(sj greater than 80 nsl Is a potential. Pressure Reducing VatveCa are a_potential.
Contact local building official for reauirements and/or additional Information.
The nearest fire hydrant is on the Property (as marked on map on the back of this page).
System hydraulic model results (FF #348), at no less than 20 psi, indicate that Lakehaven's standard maximum allowable liquid
velocity of 10 ft/s Is exceeded at a fire flow rate above 2500 GPM (approximate). This flow figure depicts the theoretical performance
of the water distribution system under high demand conditions. Fire flow rates greater than this may be accommodated through
water distribution system improvements, contact Lakehaven for additional information.
538 Pressure Zone Est. Meter Elevation(s)-GIS: High 282+/-, Low 242+/-
Est. Pressure Range at Meter(s) (psi): Min. 102, Max. 128
I hereby certify that the above water system information is true. This certification shall be valid for one (1) year from the date of
signature.
Name: BRIAN ASBURY
Signature:
Date: '0 ' I'
3021049017 3021049146 wtr (Form Update 1/3/17) Page 1 of 2
3021049017 3021049146 wtr (Form Update 1/3/17) Page 2 of 2
Lakehaven
WATER & SEWER DISTRICT
Hydraulic Model Fire Flow Estimate
Request/Reporting Form
Requested By:
Shawna Upton
Date:
10/22/18
Location to be Modeled: Hydrants near Village Green
Lakehaven %a Section Grid:
11/13
[ntersection:
S 356t' St & 2nd Ave SW
Add. Description:
See attached map
Pressure Zone: 538
Results By:
John Bowma.l
1z:k, j
Date:
10/23/18
Model Run No.:
Master Water System Model2007.net
FF #348-A
Condition
Pressure (psi)
Flow (gpm)
Static
96
0
Fire Flow
20
9200
Results By:
John Bowmat 1-*
Date:
10/23/18
Model Run No.:
Master Water System Model 2007.net
FF #348-B _j
Condition
Pressure (psi)
Flow (gpm)
Static
95
0
Fire Flow
20
6800
Results By:
Date:
Model Run No.:
John Bowman-
10/23/18
Master Water System Model 2007.net
FF #348-C
Condition
Pressure (psi)
Flow (gpm)
Static
101
0
Fire Flow
20
7000
NOTES:
Lakehaven's adopted level of service goals for fire flow rates are 1000 gpm within single
family residential areas (including duplexes) and 2500 gpm for multi -family, commercial,
industrial areas.
Model results depict the theoretical performance of the water system under high demand
conditions and are not guaranteed to represent actual system performance. A design
professional should be consulted for site specific design purposes.
Location A
The calculated fire flow capacity in the above table is based on a currently available residual
system pressure of 20 psi at the location modeled. The model indicates that Lakehaven's
maximum allowable velocity of 10 Ws is exceeded at a fire flow rate above 6400 gpm. Fire
flow capacities greater than 6400 gpm may be accommodated through water system
improvements.
Location B
The calculated fire flow capacity in the above table is based on a currently available residual
system pressure of 20 psi at the location modeled. The model indicates that Lakehaven's
maximum allowable velocity of 10 fl/s is exceeded at a fire flow rate above 2600 gpm. Fire
flow capacities greater than 2600 gpm may be accommodated through water system
improvements.
Location C
The calculated fire flow capacity in the above table is based on a currently available residual
system pressure of 20 psi at the location modeled. The model indicates that Lakehaven's
maximum allowable velocity of 10 ft/s is exceeded at a fire flow rate above 2500 gpm. Fire
flow capacities greater than 2500 gpm may be accommodated through water system
improvements.
t) Lakehaven
WATER & SEWER DISTRICT
T'
Lakehaven Water & Sewer District — Development Engineering Section
31623 — 1st Ave S * PO Box 4249 * Federal Way, WA 98063-4249
Telephone: 253-945-1581 or 253-945-1580 * Email: DE@Lakehaven.org
This certificate is intended to provide the applicant, land use agencies &/or public health departments with
information necessary to evaluate development proposals. Lakehaven Water & Sewer District, at its sole
discretion, reserves the right to delay, or deny, sewer service based upon capacity &/or supply limitations
in Lakehaven's or Other Purveyor's system facilities.
Proposed Land Use: ❑ Building Permit-SFR ❑ Building Permit-MFR ❑ Building Permit -Other
❑ Subdivision ❑ Short Subdivision ❑ Binding Site Plan
❑ Rezone ❑ Boundary Line Adjustment
® Other (specify/describe) Land Use Review
Tax Parcel Number(s): 3021049017, 3021049146 Site Address: 2n° Ave SW & 5W 356th St Lakehaven GIs Grid: H-13
Ex. Bldg. Area to Remain: Unknowns New Bldg. Area Proposed; 260,000 -
Applicant's Name: villa e Green of Federal Wa
SEWER SYSTEM INFORMATIQN-
1. ® Sewer service can be provided by service connection to an existing 8"" diameter sewer main on site and the sewer system
has the capacity to serve the proposed land use.
2. ❑
Sewer
service for the site will require an improvement to Lakehaven's sanitary sewer system of:
❑
a.
feet of " diameter sewer main or trunk to reach the site; and/or
❑
b.
The construction of a sanitary sewer collection system on the site; and/or
❑
c.
A major portion of Lakehaven's comprehensive wastewater system plan would need to be implemented and/or
constructed; and/or
❑
d.
Other (describe):
3. ®
a.
The existing sewer system is In conformance with Lakehaven's Comprehensive Wastewater System Plan.
❑
b.
The existing sewer system Is not in conformance with Lakehaven's Comprehensive Wastewater System Plan and an
Amendment to this Plan will be required. This may cause a delay in issuance of land use approvals or permits.
4. ®
a.
The proposed site land use Is within the corporate limits of Lakehaven Water & Sewer District, or has been granted
Boundary Review Board approval for extension of sewer service outside of Lakehaven's sewer service area.
❑
b.
Annexation or Boundary Review Board approval will be necessary to provide service.
S. Sewer service is subject to:
®
a.
Payment of connection charges (to be determined by Lakehaven);
®
b.
Proof or reservation of easement(s) as required by Lakehaven;
®
c.
Other: 5ewer Service Connection Permits) reaulre (Iibuilding).
Comments/special conditions:
I hereby certify that the above sewer system information is true. This certification shall be valid for one (1) year from the date of
signature.
Name: BRIAN ASBURY Title: DEVELOPMENT ENGINEERING SUPERVISOR
Signature: 15?
_Jf —it '6��
6�
Date:
3021049017 3021049146 swr (Form Update 1/3/17) Page 1 of 2
3021049017 3021049146 swr (Form Update 1/3/17) Page 2 of 2