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JUL. 15, 2005 4: 18PM CONDOR EARTH TECH N0. 2117 P. 3 <br /> Addendum to Work Plan <br /> July 8,2005 <br /> Page 2 <br /> Fremont Street approximately 25 feet east and west of boring GP-5. The proposed boring locations are <br /> shown on Figure 2, attached. All of the borings will be advanced to a maximum depth of 20 feet below <br /> ground surface (bgs).Temporary PVC well screen will be placed in each boring to allow groundwater to <br /> flow into the boring. One groundwater grab sample will be collected for laboratory analyses from each <br /> boring in which groundwater is encountered. The samples will be transported under chain-of-custody <br /> procedures to a California certified laboratory for analyses. All of the groundwater samples collected <br /> from the borings will be analyzed for total petroleum hydrocarbons quantified as gasoline (Tf2-G); <br /> benzene, toluene, ethyl benzene, and total xylenes (BTEX); and gasoline oxygenates/additives. The <br /> borings will be backfilled with neat cement. <br /> Condor respectfully requests approval of this work plan addendum. The fieldwork portion of the <br /> additional Phase H investigation is scheduled to occur on July 26, 2005.A report describing the results of <br /> the additional Phase 11 can be submitted by August 30,2005. <br /> Respectfully submitted, <br /> CONDOR EARTH TECHNOLOGIES,INC. <br /> Lee H.Morse,p.G. / eff Willett,P.E. <br /> Associate Geologist Engineering Services Manager <br /> Attachments: � <br /> Figure 1 Vicinity Mapp`��r ' �? <br /> � fESS�Fi e 2 Site Map Proposed Boris Locations � <br /> UtE <br /> cc, Michael Conrad.KSNjt"i445$8 vr'l 5! � � �'�� 41 <br /> lw <br /> Fri <br /> OWN <br /> C � <br /> = C � m <br /> EXP 03M <br /> OF Cll-� <br /> or <br /> Al-� <br /> P:\4000_prj\4038 KSN-San Juan&Fremon[\4038D KSN Additional Phase IlMork Plans\WP Addendum 408P-doc <br /> 4M <br /> %41 CONDOR <br />