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Ms. Vicki McCartney,SJCEHD August 29,2008 <br /> 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 8 <br /> Task 21): Surveying <br /> A California licensed land surveyor will be retained to survey the latitude, longitude, and <br /> elevation (to 0.01 foot vertical accuracy) of newly installed wells IW-1 and IW-2. The survey <br /> will be tied to the previous survey conducted at the site in March 2008. Survey data will be <br /> submitted to the SWRCB's GeoTracker database. <br /> Task 2E: Soil Sample Laboratory Analyses <br /> Soil samples collected during this investigation will be forwarded to Alpha Analytical, Inc., a <br /> California, state-certified analytical laboratory (ELAP #2019), for chemical analyses under <br /> chain-of-custody procedures. The-Vamples will be analyzed for GRO using USEPA Method <br /> 8015 DHS LUFT, and for BTEX, MTBE, TBA, TAME, ethyl tertiary butyl ether (ETBE), di- <br /> isopropyl ether (DIPE), dibromoethane (EDB), and 1,2-dichlo�oethane (1,2-DCA) using USEPA <br /> Method 8260B. <br /> Task 3: 03/1-12O2 Bench-Scale Testing <br /> Stratus will retain the services of Prima Environmental Inc. (Prima), of El Dorado Hills, <br /> California to perform the bench-scale testing. During the advancement of soil borings IW-1 and <br /> IW-2 (see task 2), Stratus will collect approximately 10 pounds (4.5 kilograms) of soil and <br /> forward it to Prima. In addition, approximately 15 liters of groundwater will be bailed from <br /> monitoring wells MW-1 and MW-2 (combined) and also forwarded to Prima. Testing and <br /> monitoring protocol are provided below. <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 the presence of soil and groundwater will be estimated by <br /> combining the soil, groundwater, and H2O2 in a 2:1 soil to liquid ratio, then measuring the rate at <br /> which off-gasses are generated. The test will be repeated for a minimum of three ranges of H2O2 <br /> concentrations. A third test will be performed in 5 reactors containing soil and groundwater <br /> mixture from the site. Two of the reactors will be mixed for 20 minutes and analyzed for <br /> petroleum hydrocarbons. The next two reactors will each be dosed with a predetermined <br /> quantity of 03 (40 milligrams [mg] 03/liter oxygen) at a flow rate of 50 milliliters per minute <br /> (mL/min) for 24 hours. Off-gasses will be collected in a tedlar bag. At the end of the test, the-- <br /> reactors and periodic off-gasses in tedlar bags will be analyzed for petroleum hydrocarbons-,The <br /> last two reactors will be used as controls. These will also be tested for petroleum hydrocarbons. <br /> This reactor test will be used to identify if 03+H2O2 will reduce petroleum hydrocarbons. The <br /> aqueous samples from the reactors will also be analyzed for secondary water quality parameters <br /> such as metals (Al, As/, Ba, Ca, Cr, Crvi, Cu, K, Mg, Mil, and Ni), ammonia, nitrogen, bromate, L� <br /> Aisso)v4 I'r <br /> �i{V <br /> 1 <br /> K:\Parkinsons Hammer I-5 Arco\Work Plans\Work Plan for Ozone Bench Scale Test.doc �1, j �.y+►� <br />