21-101296 -Certificate of Water Availability-04-02-2021-V11321039008 wtr swr.docx (Form Update 3/13/20) Page 1 of 4
WATER 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, 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): 1321039008 Site Address: 2626 SW 327th St LWSD GIS Grid: E-09
Ex. Bldg. Area to Remain: N/A sf New Bldg. Area Proposed: 64,000+/- sf
WATER SYSTEM INFORMATION
1. Water service can be provided by service connection to an existing ” diameter water main that is approximately
feet from the site.
2. To achieve an onsite fire flow supply of a minimum of 2,750 GPM, water service for the site will require an improvement to
LWSD’s water distribution system of:
a. 135+/- feet of 8” diameter water main to reach the site, plus other offsite system improvements; 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.
5. Water service is subject to:
a. Payment of connection charges (to be determined by LWSD, for any new/modified service connection);
b. Proof or reservation of easement(s) as required by LWSD;
c. Other: LWSD Service Connection applications required, subject to completion of associated LWSD DE Agreement
project.
Comments/special conditions: Service pressure(s) greater than 80 psi indicated, Pressure Reducing Valve(s) indicated, contact local
building official for requirements &/or additional information.
The nearest fire hydrants will be on the Property (number & locations TBD by fire marshal).
System hydraulic model results (FF #417, copy attached), at no less than 20 psi, indicate that LWSD’s standard maximum allowable
liquid velocity of 10 ft/s would be exceeded at a fire flow rate above 2,800 GPM for two (2) hours or more, provided onsite & offsite
system improvements were constructed as indicated in the hydraulic model results. 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: 290+/- Est. Pressure Range at Meter(s) (psi): 98-107
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: Brian Asbury (e-signed) Date: 3/5/21
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SEWER CERTIFICATE OF AVAILABILITY
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): 1321039008 Site Address: 2626 SW 327th St LWSD GIS Grid: E-09
Ex. Bldg. Area to Remain: N/A sf New Bldg. Area Proposed: 64,000+/- sf
SEWER SYSTEM INFORMATION
1. Sewer service can be provided by service connection to an existing 10” diameter sewer main that is approximately 10+/-
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.
5. Sewer service is subject to:
a. Payment of connection charges (to be determined by LWSD, for any new/modified service connection);
b. Proof or reservation of easement(s) as required by LWSD;
c. Other: LWSD Service Connection applications required, for disconnect of existing sewer service connection &
reconnection to new school building.
Comments/special conditions: Finish floor elevation(s) potentially less than one-foot (1’) above nearest upstream manhole indicated,
Backwater Check Valve(s) potentially indicated, contact local building official for requirements &/or additional information.
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: Brian Asbury (e-signed) Date: 3/5/21
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