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- •fir a ,R �.g r.$'���T .w...r+f'•.,a . .rte .� v�- ��-.$ - ' <br /> t <br /> I.a <br /> ! CrO'UNDWATER TECHNOLOGY <br /> STANDARDOpEMT1NG PROCEDURE ION <br /> i CONCERNING 1014I^aORItiG WELL <br /> ;x Sop 13 wells shall be drilled <br /> The boreholes for the mounted hollowed <br /> rstem auger drill rig• <br /> using a truck of the auger should be a minimuhe <br /> m r <br /> outside diameter (O.D.) 4-inch well screen• <br /> pf eight inches when installing tion of drill- <br /> hollow stem auger provides minimal attsp oific intervals' <br /> soil sampling the by hammering <br /> ing while Permittbe taken at desired depths recleaned <br /> F les can be ler containing P <br /> 5ai1 samp lit barrel same <br /> a conventional sple tubas• <br /> 2 inch grass samp thea' <br /> wells to be <br /> 3graphictheally depicted in the Well <br /> The construction details tail of tionitoring <br /> drilled at thresite all "Typical De <br /> * attached figure <br /> Figure 1) • The wells should be cons <br /> Corsstructi .020 inch machine sl -he <br /> trusted of 4 inch PVC, screened portion of <br /> feet below the present water <br /> ,., and blank casing• ra.ir. <br /> extend 5 feet above and 10 pack as determined acegb(itween <br /> table. An appropriate sand P the annular space <br /> rize analysis shall be placed in i�round <br /> the casing and drill . ealeto instalhl.ediabovesiltthelSneat ask <br /> the well- An annular ,lets overlain by <br /> rout to the surface. Ths wellhead shall <br /> should consist of benxonite P traffic rated street box. <br /> dement or cement grout <br /> within a <br /> attached 1) WelliNation <br /> �er, <br /> bit Protected below grade <br /> well shall have a information (1) <br /> Each the following in of Well, (4) Screened <br /> 4 , plate containing 3 Dep <br /> (2) taellhead Elevation, ( } <br /> oped <br /> Interval. devel <br /> 11 Wells <br /> perrmance. she well <br /> i= ent to installations• walls shall be the water <br /> F fi <br /> toremovesilts andimprove. <br /> by air lifting from the wells <br /> developm <br /> ent shall b roundwater purped <br /> ka within the well until g <br /> is silt free. not occur between <br /> To assure that on does <br /> crass contmentnofisuccessiVer undsall <br /> water <br /> and develop <br /> the drilling subsurface soils or g <br /> a equipment contacting The ss,eam cleaned equipment1 Dril- <br /> to tt1e f(3)oGroundwater <br /> shall be steam cleaned. Sampler went <br /> should includebutEarreld t (4) Well Develop <br /> ling Augers, ( ) ling Equipmen , <br /> Monitoring and samp Equipment. <br /> I piping and Spa <br /> rging equip ' <br /> } <br /> tt <br /> _ s <br />