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Ms. Vicki McCartney,SJCEHD November 17,2008
<br /> Addendum to Work Plan for Bench-Scale Test and Injection Well Installation Project No.2046-3250-01
<br /> Parkinson's I-5 ARCO Service Station,Stockton,California
<br /> Page 2
<br /> Task 3A: Test Protocol
<br /> A small amount of material (soil then groundwater) is added to 03-saturated water; the 03
<br /> concentration in the water over time is then measured using the indigo method to estimate 03
<br /> usage/demand. A control 03-saturated water (in which no material is added) is also tested over
<br /> time. The longevity of H2O2, in soil and groundwater will be estimated by combining the soil,
<br /> groundwater, and H2O2 in a 2:1 soil to liquid ratio, then measuring the rate at which off-gasses
<br /> are generated. The test will be repeated for a minimum of three ranges of H2O2 concentrations.
<br /> A third test will be performed in 5 reactors containing soil and groundwater mixture from the
<br /> site. Two of the reactors will be mixed for 20 minutes and analyzed for petroleum hydrocarbons.
<br /> The next two reactors will each be dosed with a predetermined quantity of 03 (40 milligrams
<br /> [mg] 03/liter oxygen) at a flow rate of 50 milliliters per minute (mUmin) for 24 hours. Off-
<br /> gasses will be collected in a tedlar bag. At the end of the test, the reactors and periodic off-
<br /> gasses in tedlar bags will be analyzed for petroleum hydrocarbons (GRO, BTEX, MTBE, TBA,
<br /> TAME,..ETBE, DIPE, EDB, and 1,2-DCA). The last two reactors will be-used as controls.
<br /> These will also be tested for the same suite of petroleum hydrocarbons. This reactor test will be
<br /> used to identify if 03+H2O2 will reduce petroleum hydrocarbon concentrations. The aqueous
<br /> samples from the reactors will also be analyzed for secondary water quality parameters including
<br /> Al, As, Ba, Ca, Cr, Crvl, Cu, K, Mg, Mn, Ni, ammonia, nitrogen, bromate, bromide, chemical
<br /> oxygen demand (COD), nitrite, nitrate, orthophosphate, sulfide, sulfate, dissolved and total Fe,,
<br /> Pb, Cd, Se, Cl, Fl, Sb, Be, Co, Hg, Mo, Ag, Na, Th, W, V, Zn, pH, total_dissolved solids(TDS),
<br /> oxidation-reduction potential (ORP), and total organic carbon (TOC),If Cr t is generated during
<br /> bench testing, Prima will also provide information on the attenuation of the metal back to
<br /> trivalent Cr. --J� ayn -H c ,I -�` to r o, of e, l S A/Y --� -,— a 1'1-x. rrsef-
<br /> q2�r � fr7/
<br /> Task 3B: Monitoring Protocol � (;-� ; ,, 14;
<br /> e- p4 rQ n u r AV
<br /> Prior to bench-scale testing, the soil and groundwater samples will be analyzed for GRO, BTEX, "u
<br /> MTBE, TBA, DIPE, ETBE, TAME, 1,2-DCA, EDB, acetone, Al, As, Ba, Ca, Cr, Crvl, Cu, K,
<br /> Mg, Mn, Ni, ammonia, nitrogen, bromate, bromide, COD, nitrite, nitrate, orthophosphate,
<br /> sulfide, sulfate, dissol-v-e and total Fe, Pb, Cd, Se, Cl, F1, Sb, Be, Co, Hg, Mo, Ag, Na, Th, W, V,
<br /> Zn, pH, TDS, ORP, and TOC. - -
<br /> The analytical results and observations made during the bench scale testing will be used to
<br /> evaluate the effectiveness of 03 and H2O2 injection and the geochemical changes that may occur
<br /> in soil and groundwater due to injection.
<br /> KAParkinsons Hammer I-5 Arco\Work Plans\Addendum to Work Plan for Ozone Bench Scale Test.doc
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