23-100364 water&sewer availability 02.28.2023Lakehaven
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 253-945-1580
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 (2) ❑ Binding Site Plan
❑ Boundary Line Adjustment ❑ Other (specify/describe)
Parcel Number(s): 3021049155 Site Address: 365XX — 6th Ave SW LWSD GIs Grid: H-14
Ex. Bldg. Area to Remain: N/A sf New Bldg. Area Proposed: UNKNOWN sf
WATER SYSTEM INFORMATION
1. ® Water service can be provided by service connection to existing 12" diameter water mains that are approximately 50+ - &
5+ -
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 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):
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: All water service connection stubs (all components except the service meter) must be installed & approved
by LWSD, prior to subdivision approval & recording. LWSD Service Connection Applications required.
Comments/special conditions:
The nearest fire hydrant is approximately 65+ - feet from the Property (as marked on map on the back of this page).
System hydraulic model results (FF #127, 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 3,400 GPM. 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 Elevation(s)-GIS: 385+/- Est. Pressure Range at Meter(s) (psi): 57-66
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 Title: DEVELOPMENT ENGINEERING SUPERVISOR
Signature: 3higa ffi#M 1C1 fe-signed)
Date: 1126123
3021049155 wtr swr.docx (Form Update 1/20/22)
of 4
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MOTE: Lakehaven Water and Sewer
District neither warrants nor guarantees
the accuracy of any facility information
provided. Facility lcoati onsand conditions
are subject to fiel d verificatiarl
Water C ertificate of Ava i la b i I i ty
4 Parcel 30211-049155 17 3
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3021049155 wtr swr.docx (Form Update 1/20/22)
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Page 2
Lakehaven
WATER & SEWER DISTRICT
SEWER CERTIFICATE OF AVAILABILITY
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 253-945-1580
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 (2) ❑ Binding Site Plan
❑ Boundary Line Adjustment ❑ Other (specify/describe)
Parcel Number(s): 3021049155 Site Address: 365XX — 6th Ave SW LWSD GIs Grid: H-14
Ex. Bldg. Area to Remain: N/A sf New Bldg. Area Proposed: UNKNOWN sf
SEWER SYSTEM INFORMATION
1. ® Sewer service can be provided by service connection to new 4" or 2" diameter low-pressure sewer mains that are
approximately 15+ - 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):
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: All sewer service connection stubs (main -to -lot) must be installed & approved by LWSD, prior to subdivision
approval & recording. LWSD Service Connection application required, subiect to completion of adiacent LWSD DE
Agreement project(s). Private Grinder Pump Agreements required.
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: Bs6 = ffi#U 6[L fe-signed)
Date: 1126123
3021049155 wtr swr.docx (Form Update 1/20/22)
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Page 3
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NOTE: Lakehaven Water and Sewer
District neither warrants nor guarantees
the accuracy of any facility information
provided. Facility locations and conditions
3rE subject to field verification_
Sewer C ertificate of Avail abil ity
Parcel3021049155 1130
3021049154
1f2EJ23
3021049155 wtr swr.docx (Form Update 1/20/22)
of 4
Page 4
LAKEHAVEN UTILITY DISTRICT
Hydraulic Model Fire Flow Estimate
Request/Reporting Form
Requested By:
Kathy Brown
Date:
08/17/99
Location to be Modeled:
Lakebaven'/a Section Grid:
H-14
Intersection:
SW 361st St & 6' Ave SW - Approx.
Add. Description:
See attached map
Pressure Zone:
Results By:
John Bowman
Date:
08/19/99
Model Run No.:
95 LUDSFF.INP FF#127
Condition
Pressure (psi)
Flow (gpm)
Static
71
0
Fire Flow
20
3500
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.
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
standard maximum allowable velocity of 10 ft/s is exceeded at a fire flow rate above 3400
gpm. Fire flow capacities greater than 2500 gpm may be accommodated through water
system improvements.
Form Rev. 5/30/08