Laserfiche WebLink
(YVATt <br /> `0*4 <br /> A S S O C I A 7 E S I N C . <br /> Drilling will be conducted by a State-licensed (C57) drilling company. A field geologist will be <br /> present to log drill cuttings and soil samples. Descriptions of soil types encountered and sample <br /> collection intervals will be recorded on the boring log. Soil samples will be collected at five-foot <br /> intervals and at least two soil samples from the boring will be submitted for laboratory analysis. <br /> In addition, a groundwater sample will be collected from 30 feet bgs and 50 feet bgs in the <br /> boring utilizing a Simulprobe sampling device. The soil boring will be grouted to surface after <br /> samples are collected. All drill cuttings will be stored on site in 55-gallon steel drums pending <br /> laboratory results. <br /> Sample Analysis <br /> The selected soil and groundwater samples will be immediately placed in a cooler with ice and <br /> delivered under chain-of-custody documentation to a State-certified analytical laboratory. <br /> Samples will be analyzed for total petroleum hydrocarbons as gasoline (TPHg) and TPHd by <br /> EPA Method 8015 modified, benzene, toluene, ethylbenzene, and xylenes (BTEX) by EPA <br /> Method 8020, and methyl tertiary butyl ether (MTBE) by EPA Method 8020. If MTBE is <br /> detected by EPA Method 8020, the sample will be analyzed for oxygenate fuel additives by EPA <br /> Method 8260. <br /> Well Survey <br /> ATC will perform a well survey for the site. ATC will review Department of Water Resources <br /> (D WR) and PHS/EHD groundwater well construction logs and permits to identify any <br /> groundwater wells located within a 2,000-foot radius of the site. ATC will also visually inspect <br /> adjacent properties for any groundwater wells. Any wells discovered during the well survey will <br /> be plotted onto a site vicinity map and construction details for the wells, if available, will be <br /> included in the summary report. <br /> Report Preparation <br /> Upon completion of all field activities, a summary report will be prepared for submittal to <br /> PHS/EHD. ATC will prepare a report that will include a description of all field activities, <br /> laboratory analytical results, boring logs, and recommendations. <br /> All work described in this workplan will be performed under the direction of a California <br /> Registered Professional Engineer. A completed Site Safety Plan and Quality Control/Quality <br /> Assurance Plan are already on file with PHS/EHD for this site. All field work will be completed <br /> in accordance with these plans. <br /> PROJECT SCHEDULE <br /> Due to strict timeline requirements for this project and congested schedules for the contracted <br /> State-certified drillers, drilling dates have already been scheduled. The deep on-site soil boring <br /> w:1625Wreportslwkpiiadd.doc 2 <br />