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1 v <br /> ATC <br /> A S s d c I A T E S I N C , <br /> 4.2 General C-SpargeTM Remediation System Description <br /> ' 4.2.1 C-SpargeTM System Equipment Description <br /> The C-SpargeTM system became operational on June 17, 2004. Figure 11 shows the remediation <br /> 1 system compound location as well as the injection and groundwater monitoring well network for <br /> the Jamar property. <br /> 1 The C SpargeTM remediation system at the Jamar property consists of a KVA C-SpargeTM System <br /> Series 5030 model. This includes a small profile Master Unit (43"w x 29.5"h x 12"d, 120 lbs) <br /> which has a capacity of serving up to twelve (12) Spargepoints® sequentially but is currently <br /> ' serving 10 Spargepoints® (Attachment 4). Figure 12 is a general process and instrumentation <br /> (P&ID) diagram for the Jamar property remediation system. <br /> 1 Two sparge points are installed in each of five injection wells (IWI through IW5) at the Jamar <br /> property. Each of the eight-sparge points in IWI through IW4 are on separate injection intervals, <br /> The two-sparge points in IW5 are combined together. 03 is injected sequentially in each of the 8 <br /> 1 separate sparge points at eight-minute intervals and for 16 minutes at the combined sparge point <br /> in IW5. This is 80-minutes for all sparge points combined with one shut-off period for 10 <br /> minutes after all intervals are completed or ninety minutes for a complete cycle including the <br /> shut off period. If the system is fully operational (i.e., no unscheduled down time) each sparge <br /> point is operated 16 cycles per day. This is a total of 128 minutes per day for injection at each of <br /> the eight separate sparge points (for IWI through IW4) and 256 minutes for the combined sparge <br /> points at IW5 or a total system operation of 1280 minutes per day (Table 3). <br /> The maximum delivery rate for 03 from the C-SpargeTM system at the Jamar property is 4 grams <br /> per hour. This equates to 0.002204622 pounds per hour. The injection rates for the system range <br /> between 2.0 and 3.0 standard cubic feet per minute (SCFM) based on the manufacturers <br /> 1 specifications. <br /> Attachment 4 also contains the manufacturer's description. <br /> 4.2.2 Remediation Well Description <br /> Table 4 includes a summary of the injection well completion data for the Jamar site. Figure 13 is <br /> a general well completion diagram for the injection wells. The general construction of the C- <br /> SpargeTM wells consisted of a 314" inside diameter (ID) blank casing coupled to a 1" ID - 30" <br /> long ozone diffuser. Within each injection well, two sparge points were set. The tops of the <br /> sparge points in all injection wells (IWI-IW5) were set at approximately 71.5 and 105.2 feet <br /> below ground surface (bgs). The isolated Spargepoints® are separated by approximately 31.2 feet <br /> in each injection well. The base of the shallow ozone diffuser is at approximately 74.0 feet bgs <br /> and the top of the lower ozone diffuser is at approximately 105.2 feet bgs. These ozone diffusers <br /> were placed in an eight-inch diameter hole. <br /> ' S:U68231QM repom\2005 I stQR.doc 6 <br />