21-100325-Water Certificate of Availability-01-29-2021-V16142600200 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) Spec. Warehouse
Tax Parcel Number(s): 6142600200 Site Address: 3120 Weyerhaeuser Way S LWSD GIS Grid: L-11
Ex. Bldg. Area to Remain: N/A sf New Bldg. Area Proposed: 215,726 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. Water service for the site will require an improvement to LWSD’s water distribution system of:
a. 115+/- 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; 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. Additional offsite easement required on
parcel 2121049002. Must inter-connect existing 12” water mains east & west of the subject property.
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 DE Agreement (#2 above) project must be accepted by LWSD, prior to service connection activation.
.
Comments/special conditions: Care shall be taken to avoid encroachment upon existing LWSD sewer mains, and/or associated
easement(s), 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. This flow figure depicts the theoretical performance of the
water distribution system under high demand conditions, presuming an onsite 12” diameter water distribution is constructed as
indicated above. 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 425+/-, Low 365+/- Est. Pressure Range at Meter(s) (psi): 40-74
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: 1/25/21
6142600200 wtr swr.docx (Form Update 3/13/20) Page 2 of 4