Laserfiche WebLink
Project 113-13, Work Plan Page 4 <br /> 40, TASK 3 -GROUNDWATER PURGING AND SAMPLING <br /> Pnor to groundwater sampling, water level measurement data will be collected from <br /> all groundwater monitoring wells on site Monitor well MW-4 will be purged by <br /> evacuating a minimum of three well-casing volumes of groundwater and will be <br /> sampled after allowing the discharge water temperature, specific conductivity, and pH <br /> to stabilize The Parker standard operating procedures for groundwater purging and <br /> sampling are included in the Attachments Monitor well MW-4 will be sampled with <br /> pre-cleaned teflon, stainless steel, or disposable bailers The sample will be sent under <br /> chain-of-custody to a state-certified laboratory The purged water will be stored on-site <br /> in 55-gallon DOT drums pending laboratory analysis for appropriate disposal <br /> TASK 4 -LABORATORY ANALYSIS <br /> Soil and groundwater samples will be sent to a state-certified hazardous materials <br /> testing laboratory All soil samples selected from the boring and groundwater samples <br /> from the monitor well will be analyzed for TPH-g by modified EPA Method 8015 and <br /> BTEX by EPA Method 8020. <br /> TASK 5 -ANALYZE DATA <br /> After the soil and groundwater laboratory data is available, the vertical and lateral <br /> extent of subsurface soil contamination and lateral extent of groundwater <br /> contamination will be evaluated Based on this data, a remediation work plan can be <br /> developed, if necessary <br /> TASK 6-PREPARE REPORT <br /> Following completion of the field work and receipt of analytical data, a summary <br /> report documenting the field work, presenting analytical data and outlining the <br /> findings and conclusions will be submitted to the appropriate agencies <br /> Parker Environmental Services, 4185 Rialto Court, Pittsburg, CA 94565-6116 <br /> Phone (510) 439-1024 Fax (510) 439-2566 <br />