6.6. SR 03-15-2010 - Laserfiche WebLink

Home Browse Search

(~< R~ ver ~.andfi 11 r ~uppl emental Phase zII H~drageal ogi c Eva1 uati on work Plan MSw Expansion Area. t~ Frain: Matthew Ledvi na ~ml 1 ~dvi na~n rg7 n c . comb sent: Thursday, August ~.9, ~~0~ x:31 PM Tor Johnson, Terry; 5rohlfC~ci ,e1k--river,mn,us ec. dave,l ucasC~co. sherburne.mn, us; j ei demC~gearnatrix, coin; john. e1 ksL~pca, state.mn. us Subs act r Elk River Landf ~ 11 -~ supplemental Phase III Nyd rogeol ogi c Eva? uati on work Plan, MSW Expansion Area . Ali terry and Steve: As requested , I have camel eted a nevi ew of the ~l k River ~andf i 11 -supplemental Phase III Hydrogeal ogi c Eva1 uati on Work Plan, MSW Expans~i on Area. This work p1 an was level o ed i n res once to M c a d Ci t of Elk Ri v r ca the p p P A n y e mments concern7ng March ~~Q~ ~yd rogeol age c Eval uat~ on Report . In general , the work plan wi 11 provide important supplemental i nformati an for the need ~a level op a component of the moni tari ng system targets ng ~ the 1 aver outwash depas~t, Figure ~ presents the proposed 1acat~ons for deep so71 boring and p~ ezometer construct? on . To prav7 de compl eke areal coverage of the expansion area, i t i $ suggested that an additional nested p~ ezometer be constructed at the 1 oast? on of -~~,6 OwA. Thi s wi 11 provide better elevation control on the pi e~ometri c surface and enabl e a more comprehensive flow interpretation for the 1 over outwash . With the additional gaol ogi c information co11 acted at the X16 owA 1 acati on wi 11 al sa rovi de information on the thickness of the ti 11 1 ayer, the soi 1 boring at the s~~1 ocati on would not be required (i n my opi ni one . Add scent borings ~s~~ and se~~ have tagged the top of ti 11 i n this area and the on1 y additional information for the s~~~. 1 acati an would be the ti 11 thickness. I want to state that discussions relating to the spaci ng ~ of groundwater moni tors ng wel 1 s a1 ong the camel i ante boundary and the need for adds t~ anal we11 s along an .interim development boundary have not been completed. these discussions are deferred at this time and addit~ oral we11 s may need to be constructed ~ n the future for the implementation of a camel ate and acceptable groundwater monitoring system i"or the MSW expansion area, x have contacted john E1 ks at the MPCA to discuss my review of the wank Plan. john indicated that he wi 11. forward comments next week. I am open to di scu,~si on on the detai 1 s cancerni ng the scope of the war~~ Plan . P1 ease gi ve a cal 1 with questi ans , Regards, Matt. -___-__-__-w-M Matt L~edvi na m11 edvi naC~n rgi nc, tom G~Z, X39. ~~~6 Qi reef ~~~,~zS,~~~9 cell 6~~,~~~,~780 Fax Page ~,