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F\ZOM :CITY OF RIPON 209-599-2665 1999.03-11 06:20 UIZ41 P.02/05 <br /> V <br /> 1 C4114ornia stmet suito 504 <br /> URS Greiner Modward tYyde Un Francisco.CAW I1-4VO <br /> TelA 014siall of U)W CMWffd4ff Fa .415,3 &10a <br /> Fax;4t5,398.t9D4 <br /> Dlisces WwMuride <br /> March 10, 1499 <br /> Mr. Dale Ratney,PE <br /> City of Ripon <br /> 254 N.Wilina Avenue <br /> Ripon, CA 95366 <br /> Fau: (209)599-2695 <br /> Re: Comments an Nelson Ready-Mix Excavation and Soil Mansgement Wvrkpian <br /> Dear Mr. Ramey: <br /> c'enced doc-nment,aa <br /> am respbncling with the following comr:Iouts. <br /> 1 received your fax of the above-refe <br /> General Commestg <br /> 1. Tht, data assessinetti portions of the document are improved, especially with the a"domal soil <br /> contamination contours (Figarrs 3 to 8). Figure 9 has not been prepared with emugh cotatour <br /> detail to be vary helpful. <br /> 2. Some improvements been made is rite remediation portion of the document- ft is clear tho <br /> sections on shoring, dewat�rittg, and waste tn=agement ware only addedlexpanded after <br /> PHSIEHD reviewed the document. <br /> 3. Post-remodi�stiott aotivitics alp not afldressed, including' groundwater modeling; sertlry wells'. <br /> and abandonment of onsite xhotdtodng wells. These weassl n cruci for RWQ direction that <br /> The modeling must below th*the diesel plume is moving y ��din a <br /> does not threaten a potable viater supplY,i.e.,the City's well. <br /> 4. Many sections ale inadequate or wutdn qucstianabie approwhcas- Manz proposed approaches <br /> are not in the City's best interest. These issues raise concerns#Dver > f's cost for <br /> (see <br /> the project, and Wright Envirottmentat's experience and ability oPerform <br /> ' Specific Comments below). <br /> ttio-gar 5v/2od o>so-� tiosles>ett ds ��N��as cart=mo�� ae�5i ss-of-�Yri <br />