Lakehave Water & Sewer Avail.4 41 t Lakehaven
WATER & SEWER DISTRICT
Lakehaven Water &Sewer District —Development Engineering Section
31623 — 1st Ave S * PO Box 4249 Federal Way, WA 98063-4249
Email: DE@Lakehaven.org * Telephone: 253-945-1581 or 253-9454580
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
❑ Boundary Line Adjustment ❑ Other (specify/describe)
Tax Parcel Number(s): 6142600005, 6142600200 Site Address: 337XX Weyerhaeuser Way S LWSD GIS Grid: L-11
Ex. Bldg. Area to Remain: N/A
sf
WATER SYSTEM INFORMATION
New Bldg. Area Proposed: 226,092 sf
1. ❑ Water service can be provided by service connection to an existing "diameter water main that is approximately
feet from the site.
2. ® Water service for the site will require an improvement to LWSD's water distribution system of:
❑ a. feet of " diameter water main to reach the site; and/or
® b. The construction of a 12" diameter water distribution system on the site; and/or
❑ c. A major portion of LWSD's comprehensive water system plan would need to be implemented and/or
constructed; and/or
® d. Other (describe): LWSD Developer Extension (DE) Agreement required.
3. ® a. The existing water system is in conformance with LWSD's Comprehensive Water System Plan.
❑ b. The existing water system is not in conformance with LWSD'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. ® 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 LWSD's water service area.
❑ b. Annexation or Boundary Review Board approval will be necessary to provide service.
S. Water service is subject to:
® a. Payment of connection charges (to be determined by LWSD);
® b. Proof or reservation of easement(s) as required by LWSD;
® c. Other: LWSD Water Service Connection applications required. LWSD DE Agreement (#2 above) project must be
accepted by LWSD, prior to domestic or irrigation service connection activations.
Comments/special conditions: Care shall be taken to avoid encroachment upon existing LWSD water and/or sewer mains, and/or
associated easementls), on the site.
The nearest fire hydrants will be on the Property number &locations TBD by fire marshal).
System hydraulic model results (FF #324, copy attached), at no less than 20 psi, indicate that LWSD's standard maximum allowable
liquid velocity of 10 ft/s is exceeded at a fire flow rate above 4,100 GPM for two (2) hours or more. 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 LWSD for additional information.
538 Pressure Zone Est. Meter Elevations) -GIS: 400+/- Est. Pressure Range at Meter(s)
(psi): 51-59
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
ure:
Title: DEVELOPMENT ENGINEERING SUPERVISOR
Signat
614260005 6142600200 wtr.docx (Form Update 4/2/19) Page 1 of 2
614260005 6142600200 wtr.docx (Form Update 4/2/19) Page 2 of 2
LAKEHAVEIN UTILITY I)ISTKIUT
Hydraulic Model Fire Flow )Jstimate
Request/Reporting Form
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 multifamily, commercial,
and 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.
The calculated fire flow capacity in the above table is based on a curr
ently available residual
system pr•essur•e of 20 psi at the location modeled and with a proposed new 12" diameter
pipe loop. An 8" diameter pipe loop exceeded Lakehaven's standard maximum allowable
velocity of 8 $/s for new pipe at a fire flow rate above 2100 gpm.
0�1916pp32a- Preferred Freezer�ornnRev.tz/6ns)
Results By;
John Bowman..,
Requested By:
BrianAsbury
Date:
07/1/16
Location to be Modeled: Proposed "Preferred Freezer" Site (APN 6142600005/6142600200)
Lakehaven'/, Section Grid:
L/11
Flow (gpm)
intersection:
West of S 339d' St & Weyerhaeuser Way S
0
Add. Description:
See attached map; Hyd #3
pressure Zone: 538
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 multifamily, commercial,
and 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.
The calculated fire flow capacity in the above table is based on a curr
ently available residual
system pr•essur•e of 20 psi at the location modeled and with a proposed new 12" diameter
pipe loop. An 8" diameter pipe loop exceeded Lakehaven's standard maximum allowable
velocity of 8 $/s for new pipe at a fire flow rate above 2100 gpm.
0�1916pp32a- Preferred Freezer�ornnRev.tz/6ns)
Results By;
John Bowman..,
Date:
7/19/16
Model Run No.:
Master Water System Model 2007.net
FF #324
Condition
Pressure (psi)
Flow (gpm)
Static
40
0
Fire Flow
20
4100
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 multifamily, commercial,
and 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.
The calculated fire flow capacity in the above table is based on a curr
ently available residual
system pr•essur•e of 20 psi at the location modeled and with a proposed new 12" diameter
pipe loop. An 8" diameter pipe loop exceeded Lakehaven's standard maximum allowable
velocity of 8 $/s for new pipe at a fire flow rate above 2100 gpm.
0�1916pp32a- Preferred Freezer�ornnRev.tz/6ns)
(NOTE; Lalcohaven Ullllly District
noithor warrants nor tluaranloss the
accuracy of any facility Information
proY UM Facility locations and
conditions aro subject to field
PREFERRED FREEZER / ORCA BAY
16.102265 -00 -UP
0 300 600
Feet 5/13/2016 BTA
Lakehaven
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, 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
❑ Boundary Line Adjustment ❑ Other (specify/describe)
Tax Parcel Number(s): 6142600005, 6142600200 Site Address: 337XX Weyerhaeuser Way S LWSD GIS Grid: L-11
Ex. Bldg. Area to Remain: N/A
sf
New Bldg. Area Proposed: 226,092 sf
SEWER SYSTEM INFORMATION
1. ❑ Sewer service can be provided by service connection to an existing " diameter sewer main that is
approximately feet from the 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 LWSD'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 LWSD's comprehensive wastewater system plan would need to be implemented and/or
constructed; and/or
® d. Other (describe): LWSD Developer Extension (DE) Agreement required.
3. ® a. The existing sewer system is in conformance with LWSD's Comprehensive Wastewater System Plan.
❑ b. The existing sewer system is not in conformance with LWSD'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 LWSD'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 LWSD);
® b. Proof or reservation of easement(s) as required by LWSD;
® c. Other: LWSD Sewer Service Connection Permits) required. LWSD DE Agreement (#2 above) project must be
accepted by LWSD, prior to service connection activation(s).
Comments/special conditions: Care shall be taken to avoid encroachment upon existing LWSD water and/or sewer mains, and/or
associated easement(s), on the site.
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:
614260005 6142600200 swr.docx (Form Update 4/2/19) Page 1 of 2
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