21-101125-UP-Water 04-27-21 V1FW Mixed Use 2020 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 (8) Building Permit-Other
Subdivision () Short Subdivision () Binding Site Plan
Boundary Line Adjustment Other (specify/describe) Land Use (UP III)
Tax Parcel Number(s): 912940-0010, -0020, -0030, -0040, -TR-A Site Address: SE Corner of S 348th St & 1st Ave S
Ex. Bldg. Area to Remain: N/A sf New Bldg. Area Proposed: 315,779 sf (total) LWSD GIS Grid: I-12
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. Water service for the site will require an improvement to LWSD’s water distribution system of:
a. 50+/- & 70+/- feet of 12” diameter water main to reach the site; and/or
b. The construction of a 12” diameter water distribution system on the site (see map on back of this page); 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);
b. Proof or reservation of easement(s) as required by LWSD;
c. Other: LWSD Service Connection Applications required, subject to completion of associated 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 #318, 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 5,000 GPM for two (2) hours or more; with aforementioned
onsite construction indicated in 2.b above. 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: High 250+/-, Low 234+/- Est. Pressure Range at Meter(s) (psi): 116-131
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 Date: 11/30/2020
FW Mixed Use 2020 wtr swr.docx (Form Update 3/13/20) Page 2 of 4