Laserfiche WebLink
31 August 2000 <br /> AGE Project No 96-0232 <br /> Page 20 of 25 <br /> 5 6 TREATMENT SYSTEM <br /> One 750-gallon poly tank will be used to temporarily store extracted water prior to processing As <br /> indicated above, this tank is equipped with various level control switches which serve to control the <br /> rate at which extracted water is introduced into the treatment vessels, to provide safety shutoff <br /> capabilities and to allow coarser sediment to settle out prior to treatment The process pump is <br /> located directly behind the holding tank <br /> The first three stages of treatment media are contained in three 2,000-pound GAC absorption vessels, <br /> the final three stages of treatment media are contained in three 2,500-pound SunSolve absorption <br /> vessels The first three vessels will be designed to adsorb TPH-g,TPH-d and BTEX compounds The <br /> final three vessels will contain SunSolve, a liquid phase filtration media specifically designed to <br /> adsorb MTBE and TBA Sample ports are located between all vessels to allow detection of potential <br /> media break through and to obtain final discharge samples The system layout is depicted in Figure <br /> lie 5 7 REMEDIATION SYSTEM START-UP PERIOD <br /> Prior to the pump and treat start up period, treated water will be pumped into a holding tank and <br /> composite grab ground water samples collected for treatment verification <br /> During the pump and treat start-up period(first two weeks of operation), ground water influent and <br />' effluent of the treatment system, depth to ground water measurements and operational parameters <br /> (ground water flow meters, fluid level sensors, total flow indicators)will be monitored daily during <br /> the start-up period to ensure optimal removal of dissolved hydrocarbons and dissolved MTBE <br /> 5 8 MONITORING AND MAINTENANCE ACTIVITIES , <br /> Ground water samples from the pump and treats stem influent, effluent and intermediate stages will <br /> be collected on a bi-weekly basis and submitted to a State of California Department of Health <br /> Services (DHS)-certified laboratory for analysis of the following constituents <br /> • TPH-g and TPH-d in accordance with EPA Method 8015 Modified, <br /> r • BTEX and MTBE in accordance with EPA Method $020, and <br /> • MTBE, ETBE, TAME, D1PE and TBA in accordance with EPA 8260 <br /> Laboratory reports for ground water analysis, testing methods, laboratory quality assurance/quality <br /> Advanced GeoEnvironrnentai,Inc <br />