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10/12/1999 16:09 9165350207 APEX ENVIRLTECH -PAGE 07 <br /> Workplan tar Not Test and Feaslbili ty Analysis <br /> Colberg BM Works„401 N Stocktm Sty,swjdon aljf0TWa <br /> 0 <br /> Np 3. <br /> TASK 1. PILOT TESTING <br /> The primary purpose ofthis task is to determine the effectiveness of using an oxygen release <br /> compound(ORC to remediate to petroleum hydrocarbon-impacted groundwater at the site to <br /> closure levels. When hydrated,the ORCtl°;vleases high levels of oxygen into the groundwater <br /> over a period of roughly six,months, The elevated levels of oxygen degrade the petroleum <br /> hydrocarbons compounds in two ways: 1. through direct chemical oxidation,of the petroleum <br /> 4 hydrocarbon compounds;and 2.)through stimulation ofnatural microorganism which have the <br /> capability to degrade petroleum hydrocarbons. The aerobic conditions enhanced by the()RC <br /> appliccattion`'acr�elerate the,degradation of the petroleum hydrocarbon compounds by several orders <br /> ofmagnstude. Background information on QRC*is included in Appendix B. ,Information on <br /> fiy <br /> ORC ,effectiveness for; mediation 0fMTBE is included in AppendixC. A,Material Safety Data <br /> Sheet(MSPS)for t3RC is included in Appendix D. References on the use of )RCare <br /> included in i Appendix E <br /> Apex pre►pcises installing'ORC"'SOcW in monitoring well MW-3--the only impacted well at the <br /> site. It is a petted that the ORC O-application will result in a substantial:decrease in petroleum � - `i Y#`r <br /> hydrocarbon concentrations in the well within six months Depending on the concentrations <br /> J <br /> obtained within the six i h cid,Apex may elected to replace the spent ORC*with a new <br /> application and continue the pilot test foranother sur months. ? <br /> TASK 2. uARTERLY GR4UN W 1�ER.MONITORINfi � <br /> It is assuumd that twc to thy► uarters fmozutonn we sam to 11 be required to dn l 1 <br /> the effectiveness the C>RC�'applScation an reducing the cencerttratiort of petroleum <br /> hydrocarbons in monitoring well�-3. The Erest way to det+�nrisne the efrOctiv+eness of the <br /> ORC°°will'be trressurennent of the concentrations ttf th+e petroteurn hydr carbon compounds and <br /> dissolved oa,jrgen levels in the three monitoring wells(MW_I,MW-2 anti Nf -3). All three <br /> rnon toiingg veils will be monitoted for Total Petroleum Hydrocarbons,as gasoline(TPHS)using <br /> EPA Method 8015 Modified,benzene,toluene,etbylbenzen and total xylenes(BTEX)avid <br /> methyl tertiary butyl ether( 'TBE)using EFA.M' 4102 The we is �I t��Snntlp��nd a <br /> nev+r hid a tc tent be calculated. Samples will be submitted,under chain-of-custody <br /> documentation,to a state certified analytical laboratory. The data for the quarterly monitoring <br /> It `'�' ; <br /> well sampling will be <br /> P.ng presented in a Quarterly Monitoring Report: <br /> TASK 3. PILOT TEST EVALUATION <br /> Based on the"data collected from the quarterly <br /> �,,; +� y groundwater monitoring activities at the site,Apex <br /> 'Will assess the effectiveness of CIRC+°in reducing the petroleum hydrocarbons in groundwater <br /> y, <br /> to closure'leveIs. To further verify the reductions in petroleum hydrocarbons, Apex proposes to <br /> use tt_Geoprobeto test soil and groundwater in a maximunn <br /> of three locations. Out soil sample <br /> TB.,D to clrmjcctstl j"iaCOL01.0017cm-ityWodW amdoc <br /> k <br />