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� � wTPH��D. If r.hemical testiny d:cects hydrocarbon concentrations above Ecology's <br /> p;Tr;; cleanv� level tilling will resume. This process wil.l be repeated until <br /> hydrocac6on concentrations have been reduced to beloc Eculogy's MTCA cleanup <br /> /0 x levels. <br /> Cy � <br /> All wock will be conducted in accordance aith the Washington State Department of <br /> y �N Ecolcgy gvi�lance document "Guidance: f�r Remediation of Releases from Underground <br /> K y� Storage Tenks." Daily logs vill be maintained during the prc,ject to verify <br /> O� �,O� activities including the additSon of nutrients and innoculant and inspections of <br /> y M erosion control, bioremediation pile covers and liners. <br /> H <br /> � x <br /> O� HEALTH AND SAFETY <br /> H <br /> H �g Standard health and safety practices will be folloved throughout the project. <br /> G�� o Gonsultants and subcontractors working on the pro,ject will be reqnired to follov <br /> their established health and safety work plans. All onsite workers will meet the <br /> .�.� y requ!rements for workiug with hazardous wastes such as petroeleum hydrocarbon <br /> H contaminated soil. No unauthorized personnel vill be permitted within working <br /> g�n N areas during the remediation project. <br /> ��y <br /> t" SITE CIASURE <br /> Oy <br /> � To verify that the so11 pile has been cemediated, soil samples wi.11 be collec[ed <br /> from randomly selected locations throughout [he soil pile. The samples will be <br /> submitted for chemicel analyses of total petroleum hydrocarbons as diesel using <br /> Ecology's WTPH-D method. If chemical test results do not detect hydrocaibon <br /> concentra:ions above method detection limits or detect hydrocarbon concentrations <br /> �- that are below Ecology's MTCA cleanup levels then biocemedietion activities Mill <br /> I �� be tecminated. <br /> , Upon completion of the soil remediation project the fencing, silt fence/ctraw <br /> bails, cover and linet wi7.1 be removed and the soil will be spread out and used <br /> ' I as commercial fi11 on the Seadog Corporati.on properey. Soil samples wi.11 be <br /> �_ collected from randomly selected locations from natural onsite suil below the <br /> bioremediation site to verify that cross contamination into the natural soil did <br /> ', not occur. <br /> I �1�� A closure report will be prepered documenting bioremediaticn activities including <br /> length of the project, types and amounts of nutrients and innoculants used, <br /> sampling activities and analytical results. This report will be submitted to <br /> �� Ecology in accordance with thr_ Underground Storage Tank Reyulations, WAC 173-360. <br /> If you have any questions regarding this matter please contact Liam J. Bayly at <br /> (206) 286-4490. If I am not availabie you �nay direct yo��r questions to Kevin <br /> —— Murphy at (206) 285-2400. <br /> �� <br /> C:\W57\LJR\MAY93\01•778C.1TR <br />