ARCHIVED REPORTS XR0011102 - Laserfiche WebLink

Home Browse Search

+� C3eofogicaf7echnics Inc. Page 5 City of Escalon Project No. 750.3 October 31,2000 L� Quarterly Chemical Testing The groundwater sample analysis protocol outlined in the work plan for Additional Site Characterization dated June 29, 2000 will be used during this remedial project. 4.2.2 Soil Vapor Influent and Emission Monitoring Weekl Monitorin Vapor influent and air emissions will adhere to the AtoC permit and should be monitored weekly for the first month and twice a month thereafter for the duration of the remedial +— project using field instrumentation - PID or FID. The resulting data will be used to optimize the extraction process and to estimate rates of contaminant removal. Monthly Testing Influent vapor analyses from each vapor extraction we11f shall be accomplished monthly. The resulting data will be used to optimize the extraction process and to estimate rates of contaminant removal. Field Monitoring The proposed monitoring schedule is as follows: w.• • Weekly for the first month with monitoring of the influent and effluent by a hand held Organic Vapor Meter (OVM) & samples for laboratory analysis. • After the first month, monitoring of influent and effluent by a field portable OVM on a Lo twice-monthly basis and monthly for laboratory analysis • The samples collected from the influent and effluent ports will be submitted to the laboratory for analysis. Note: This monitoring schedule may be adjusted according to requirements of the SJVUAPCD permit. �. Ihspection events will include monitoring of the following parameters: • All performance functions of the treatment system Measuring and recording air flow& temperature * Screening the influent vapor concentration with an organic vapor meter (Thermo Environmental Instruments Model 580B with a 10.2 eV photoionization lamp, calibrated to factory specification with a 100 ppm concentration of isobutylene gas) 4.0 A log will be maintained on site that will list cumulative operating hours, OVM monitoring data, regeneration events, and an estimate of the amount of hydrocarbons removed per day. Laboratory Testing Once a month, samples will be collected for influent and effluent samples for laboratory analytical evaluation. Monthly samples will be submitted for testing of BTEX, TPH-G and OFCs (the 4 oxygenated fuel compounds). A vacuum pump will be used to collect an air sample from each sample port. The air sample will be collected in a one-liter capacity Tedlar bag and submitted the same day to Air-Toxics +� in Sacramento for BTEX, TPH-G and OFC analysis. The detection limits are listed below. etectionLimits: I HTEX Ethers-8260 - tr �Lg r a..