HomeMy WebLinkAboutReport C1eanWater \` Servir'' PERMIT NO. MS1-7,o oo'+y
LOT
EROSIO1
A CONTROL INSPECTION REPORT
DATE
OWNER/PF INSPECTOR G4s'S sJ.sS— SUBDIVISION fl.k-cs TesIUw Cco55c^5
SITE AT'2RMITEE _ r_ t I. .f*,.._ h
JDRESS
APPROVED
FOR THIS SITE TO REMAIN IN COMPLIANCE WITH CLEAN
WATER SERVICES EXISTING RESOLUTION AND ORDER FOR
DURATION OF CONSTRUCTION, THE OWNER/PERMITEE MUST:
• MAINTAIN CLEAN STREET (S) - FREE OF ANY VISIBLE OR MEASURABLE AMOUNT OF DIRT,
GRAVEL OR DEBRIS. GRAVEL ACCESS RAMPS STRICTLY PROHIBITED.
• TO PREVENT TRACKING, RESTRICT ALL CONSTRUCTION VEHICLE TRAFFIC TO GRAVEL
CONSTRUCTION ENTRANCE OR STREET ONLY.
• MAINTAIN ALL EROSION CONTROL MEASURES TO CLEAN WATER SERVICES INSTALLATION
STANDARDS.
• PROVIDE MAINTENANCE OF ANY SEDIMENTATION BARRIERS/FILTERS AT STORM DRAIN
STRUCTURES OR DRAINAGE AREAS WHICH ARE SITE SPECIFIC.
• PROVIDE ADDITIONAL EROSION CONTROL MEASURES AT ANY TIME DURING CONSTRUCTION
WHEN SITE CONDITIONS CHANGE.
• OTHER
NOTE: FAILURE OF THIS SITE TO REMAIN IN COMPLIANCE WITH
CLEAN WATER SERVICES RESOLUTION AND ORDER CAN RESULT IN THE
ISSUANCE OF A CIVIL CITATION, STOP WORK, OR SUSPENSION OF PERMITS AS
DEFINED IN CLEAN WATER SERVICES RESOLUTION AND ORDER 90-63 AS AMENDED.
INSPECTOR PHONE S ` `I 0-7$3
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GEOPACIFIC
Real-World Geotechnical Solutions
Investigation• Design •Construction Support
October 10, 2023
Project No. 16-4108
Stonebridge Job No. 3285 /14 572_o z3 -- as
Attention: Andy Thomas 4!- s
Stonebridge Homes NW LLC
4230 SW Galewood St., Ste. 100
Lake Oswego, OR 97035
Fax 503-387-7615
Email Andvastonebridgehomesnw.com; JimD(a,stonebridgehomesnw.com;
kristen(a�dmhholdingsco.com
FOUNDATION SUBGRADE REVIEW
LOT 198 RIVER TERRACE CROSSING
15673 S.W. EVERGLADE AVENUE
WASHINGTON COUNTY, OREGON
GeoPacific Engineering Inc. visited the site today to review the single-family home foundation
subgrade at the above address. We understand that the proposed building is a two-story home. In
our opinion, the observed subgrade is adequate for support to an allowable bearing pressure of
1,500 psf.
At the time of our site visit, the excavation was complete and soils exposed in foundation excavation
consisted of predominantly medium stiff to stiff native rocky soils that could be probed about 1/2 to 4
inches with moderate pressure using a steel "T" bar probe. The expected maximum anticipated total
and differential footing movements (generally from soil expansion and/or settlement) are 1 inch and
3/ inch, respectively, over a span of 20 feet. The lot is gently sloped with a short, sidestepped
excavation. Footing-to-wall and footing-to-slope setbacks were not an issue.
Due to relatively impervious silty and clayey soils encountered throughout the site, all foundations
should incorporate appropriate drainage measures in accordance with the International Residential
Code. Adequate crawlspace drainage is not something that geotechnical consultants can verify; the
purpose of our visit is for observations of foundation bearing conditions only.
Our work scope pertains to a geotechnical engineer's foundation excavation review only and the
conditions existing and exposed at the time of our site visit. Within the limitations of scope, schedule
and budget, GeoPacific attempted to execute these services in accordance with generally accepted
professional principles and practices in the fields of geotechnical engineering and engineering
geology at the time the report was prepared. No warranty, express or implied, is made. If you have
any questions, please call.
14835 SW 72"d Avenue Tel(503)598-8445
Portland,Oregon 97224 Fax(503)941-9281
GEOPRCIFIC
Job No. 16-4108
Lot 198 River Terrace Crossing
Sincerely,
GeoPacific Engineering, Inc.
��RED PROFESS
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EXPIRES:06!3012t ZGi
James D. Imbrie, G.E.
Geotechnical Engineer