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�1-�s113 <br /> c mpe.Uee,I t ,,.at.rLa J,ca gvje-,d.ed-i f ,r ri IYWSAeLlFt 0770 igLIF - � 4i x� �P�r <br /> Fie FSR Go To Fauwias Help ._ <br /> y}Favwte, e4 deskop.n V.Free Hotmail g sugg%,Jed=,ae.• g,WeeSk'Gdpafv <br /> - <br /> �M[pz(Igeobacker.wa[erbwrds.ca.gpv(asVuploads(g...I I _ <br /> cross-gradient (MW-9 and MW-10), and down-gradient (MW-6) of the treatment area and were <br /> analyzed to determine if dissolved manganese concentrations are continuing to decrease in <br /> groundwater. Dissolved-phase manganese concentrations during the Second Quarter 2013 <br /> were generally observed to either remain steady at or near concentrations similar to those <br /> detected in the baseline samples. <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Cardno recommends continued quarterly groundwater monitoring and sampling activities be <br /> performed at the site and the site be reviewed for low-risk closure because the site has been <br /> remediated to the extent practicable and the concentrations appear to meet the low-threat <br /> closure guidelines. Upon concurrence of low-risk closure, Cardno will prepare a formal closure <br /> request. <br /> WASTE DISPOSAL <br /> Purge water generated during semi-annual monitoring and sampling is temporarily stored on <br /> site in labeled 55-gallon drums, and will be removed by an approved waste hauler and disposed <br /> of at the Crosby and Overton disposal facility in Long Beach, California. <br /> RECENT SUBMITTALS/CORRESPONDENCE <br /> • Cardno Submitted— Quarterly Status Summary Report—First Quarter 2013, dated April <br /> 30, 2013 <br /> Work Completed (Second Quarter 2013) <br /> • Cardno performed groundwater monitoring and sampling activities. <br /> • Cardno submitted a groundwater status summary report. <br /> s <br /> Work Planned (Third Quart <br /> rgge �����f��w„pwgzw,a J sa.. I .S I I .v ... Q 0%, 1�® 8:93 M1 <br /> Oar[ D lr,boc-HKwI@s¢and.c. CIRCLE -Mlvo,.. Welcome to Geohacker... htt ps,/1/g ootracker.w <br /> Monday,Sep 23,2013 08:43 AM <br />