WORK PLANS - Laserfiche WebLink

Home Browse Search

28 June 2001 AGE-NC Project No. 95-0103 Page 5 of 9 3.7. REMEDIATION SYSTEM START-UP PERIOD Prior to the pump and treat start up period, treated water will sampled and a 4:1 composite ground water sample collected for treatment verification. The system will be activated after treatment verification for discharging the treated ground water. During the pump and treat start-up period (first two weeks of operation), ground water influent and effluent of the treatment system, depth to ground water measurements and operational parameters (ground water flow meters, fluid level sensors, total flow indicators, LEL indicators) will be monitored daily to ensure optimal removal of dissolved hydrocarbons. 3.8. MONITORING AND MAINTENANCE ACTIVITIES Ground water flow totalizers, fluid level sensors, total flow indicators, LEL indicators will be continually monitoring the ground water extraction system. Ground water samples from the pump and treat system influent, effluent and intermediate treatment stages will be collected on a weekly basis for the first month and monthly thereafter and submitted to DHS-certified laboratory for analysis of the following constituents: • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA Method 8015 Modified; • Volatile aromatic hydrocarbons -benzene, toluene, ethylbenzene and total xylenes (BTEX) in accordance with EPA Method 8020; • Oxygenated compounds - di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), MTBE, tertiary-amyl methyl ether(TAME) and tertiary butanol (TBA) in accordance with 8260, respectively; • Five metals: Cd, Cr, Cu, Pb, Ni and Zn in accordance with EPA Method 200 Modified and • pH in accordance with EPA Method 150.1. Laboratory reports for ground water analysis, testing methods, laboratory quality assurance/quality control (QA/QC) reports, and sample chain of custody documentation will be presented in quarterly reports. Ground water treatment operational parameters will be monitored at a minimum of once a week to monitor cleanup progress and adherence to discharge requirements. The ground water treatment system will be maintained on a weekly basis according to manufacturers recommendations.