FIELD DOCUMENTS - Laserfiche WebLink

Home Browse Search

13 September 2012 AGE-NC Project No.99-0682 Page 3 of 17 • During injection event No. 1, one 200-gallon batch of 5% hydrogen peroxide solution and muriatic acid (as described above) was gravity fed into each well (MW-1A and MW-8). • During injection event No. 2, one 200-gallon batch of 5% hydrogen peroxide solution (without acid) was gravity fed into each well (MW-1A and MW-8). • During injection event No. 3, two 200-gallon batches were pressure injected into each well(MW-1A and MW-8)utilizing a sump pump and vinyl tubing;acid was only added to the first batch of solution for each well. • During injection event No. 4, two 200-gallon batches of 5% hydrogen peroxide (without acid)were pressure injected into each well (MW-1A and MW-8) utilizing a sump pump and vinyl tubing. 3.2. BACKGROUND/BASELINE MONITORING EVENT On 24 April 2012, Baseline data (field parameters and analytical data)was collected during the semi-annual groundwater monitoring event utilizing wells MW-1A, MW-6, MW-7 and MW-8 to establish background conditions prior to conducting ISCO pilot test injections. Procedures and results of the monitoring event were presented in the AGE-prepared, Semi-Annual Ground Water Monitoring Report - Second Quarter 2012, dated June 12 2012. 3.3. PROGRESS-ISCO INJECTION MONITORING EVENTS Between 29 May and 21 June 2012, selected field parameters were collected from wells MW-1A, MW-6, MW-7 and MW-8 during the ISCO pilot test. Field parameters included measurements of pH, dissolved oxygen (DO), oxygen reduction potential (ORP), salinity, total dissolved solids (TDS), temperature and electric conductivity(EC) utilizing a YS1556i multi-meter probe. The probe was placed down-hole into the water column until readings were stabilized. On 07 June and 21 June, groundwater samples were collected from wells MW-1 A, MW-6, MW-7 and MW-8 to evaluate the progress and effectiveness of the ISCO injections. Groundwater samples were collected and analyzed in accordance with the Stallworth Auto Sales Draft Monitoring and Reporting Program (MRP) Order No. R5-2008-0149 (AppendixA)and AGE's standard monitoring and sampling procedures(Appendix B). Field data and logs are provided in Appendix C. Advanced GeoEnvironmental,Inc.