Laserfiche WebLink
Metadata
Document management portal powered by Laserfiche WebLink 9 © 1998-2015 Laserfiche. All rights reserved.
Former Valley Water Treatment Page 4 <br /> Quarterly Groundwater Monitoring Report <br /> Project No. 480.2 <br />' May 16, 2006 <br /> Gasoline contaminated purge & rinseate water generated during the activities <br /> described above was stored in poly drums located on the site. <br />'. 2.2 Groundwater Sample Analyses <br /> Groundwater samples were analyzed as follows: <br />' • Total Petroleum Hydrocarbons as GasolineTPH-G EPA method <br /> ( ) b Y <br /> 8015(m). <br /> • Benzene, Toluene, Ethylbenzene, and Xylene (BTEX) by EPA method 602. <br /> The detection limits are included in the summary analytical data table (Table 1). <br />' Detectable levels of gasoline range petroleum hydrocarbons g p y s and/ar BTEX <br /> compounds were found in the water sample from only one well, MW-1. <br />' 2.3 Field e d Data <br />' The field data for this groundwater monitoring event are summarized in Table <br /> 1. The level of groundwater has risen about 3 feet since the time of the initial <br /> sampling event on December 16, 2005. The following table summarizes the <br /> historical monitoring information from the existing wells. <br /> Date Bearing of Flow Gradient <br /> 12/16/05 N30W 0.0383 Ft/Ft <br /> 3/21/06 N21OW 0.0041 Ft/Ft <br /> I <br /> 2.4 Waste Disposal <br />' Purge water from this monitoringevent was temporarily stored a - <br /> p y 55 gallon <br /> drum on the site pending collection for recycling. <br /> I <br /> 2937 Veneman Ave.,#B240 Geo-Phase Environmental Inc. Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0293 <br />