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� <br /> �ent uy: tartn Gonsultants 425 746 OB�O; OB/19/02 4:57Pld�JC[Fex q563;Page 2 <br /> Earth Cons��ltarrts lnc. <br /> ! � � fa+>icclnicWing4wx�n.c'wk�Isie6131�iruntriiwltitYrnui�n <br /> � <br /> June 19, 2002 E-10134 <br /> Panattoni Development <br /> 1400 Southwest 5'" Avenue, Suite 810 <br /> Portland, Oregon 97201 <br /> Attention: Mr. Patrick Gemma <br /> Subject: Preliminary Infiltration Evaluation <br /> Seaway Center, Lot 8 <br /> Merrill Creek PArkwAy and Hardeson Road <br /> Everet't, 411ashington <br /> Dear Mr. Gemmar <br /> In accordance with your request, ECI is pleased to present tha results of the <br /> infiltratiun evaluation for the proposed site. Based on the results of the field <br /> ( exploration and laboratory analyses, infiltration of stormwater collected in the <br /> vicinity ot Test Pits TP-1 through TP-6 should be feasible. Based on the soil <br /> c:onditions encountered at the time of our field exploration and textural analyses, <br /> i�itiltration in the vicinity of 1'est Pits TP-7 and TP-8 wil� not be feasible. <br /> Project Description <br /> The subject cite is planned to be developed with up to seven commercial buildings. <br /> Roof downspout runoff will he infiltrated at each building location. <br /> Sno�a of Services <br /> An ECI representative performed a site visit on .1une 4, 2002 to perform an <br /> infiltration evaluation within the proposed infiltraticn areas. This consi�ted of <br /> excavating eight test pits within the proposed fnfiltration areas to a maximum <br /> depth of seventeen {17? feet below existing grade, and representative soil samples <br /> were collected from each test pit ai variable depths for laborator�� analyses. <br /> 7extural ana�yses were pertormed on representative soil samples collected at the <br /> various test depths to identify the best cnndidato depth for infiltration ar,d to <br /> determine infiltretion ratss. <br /> 1n��5 13G!h Flece'�[,Surte 2nt,8ellevue,Wshinglon 98P)5 Bellevue(425)643-3780 FAX(42b)746-0860 Toll Free(888)739-66; <br /> SF <br />