rhoeq & ^MES, Inc. a * ft LltlCOLTl, IOIDA UECORD OF WELL Started the Well - July 24, Finished the Well - August 7, 1946.

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1 rhoeq & ^MES, Inc. WELL CONTRACTORS WELL SUPPLIES a * ft MEMBER Phone GR LltlCOLTl, IOIDA f, I ljj tf UECORD OF WELL Owner - Town of Union, Iowa. Address - Union, Iowa. Location - In the town of Union, Iowa. A/uj *^r ~ 2)- d-/fkj Started the Well - July 24, 946. Finished the Well - August 7, 946. Size of..ell - 0". Depth of Well - 90 feet. Static Water Level - 23 feet. Draw-down 5 ft., pumping 300 gallons per minute. Pipe installed - 39 ft. of 8" pipe/ 83'5" of 0" pipe, 20'6" of 8" pipe. Driller - Homer Rhodes* for iloes & Ames, Inc. Remarks: 8" bottom 02 ft. Rock broken from 5 ft. toloo ft. Rock from 00 feet to,90 feet..'..::-.-.'fion. 0' to 5' - Drift. 5» to 90' - Rock. Total Depth - 90 feet fv l l t &?< > **/* /V)^ y f?tt Wwogr 7J?j '* \** IA/4TSM-

2 . IOWA GEOLOGICAL SURVEY Iowa City, Iowa Well Log Record Owner of well T^vw J //Uw^v^.. County_ Tenant Location Curb elevation sec, ft. Town, T. N., R... Present depth Static level: (Depth to water "JJJJJJJ curb) ft. level "if ft. at^pd gpm. Contractor (\U^, $ktjlfi/> Date drilled,/xw' A^ 7 E. final _ft. depth /?0 Pumping Description* FEET Description* FEET Thick From To Thick From ' To 0 "/ /r ih-,aa ^ _Twp. ft. > i *Abbreviate descriptionsj use one line for each formation. Remarks on water zones and casings - < / «it't" t iff* L 6& //*w/#-<', rt Temperature: Air_ 'F., Water F. at A.M. P.M. 9 Record obtained from_ Recorded by_

3 " June. 946 Mr. Sam Sorensen, Mayor Union, Iowa Dear Mr, torensent In response to your request we have assembled our information concerning ground water condition;; ir. the vicinity of Union. The town of Union is built on a terrace about 20 feet below the upland and 0 to 5 feet above the flood plain of the Iowa River. The town water supply is now derived from wells drilled into _ sand and gravel bed beneath the terrace. These wells were put in about 25 yean- ago and are reported to have been very ;,atir;factory» The water is of good lijbaeral&gioal quality, and It Is reported that ^ g,p,, is pumped froa then ai the present time* Bedroc«is limestone of [Mississippi'_ a>;e reported to occur at a depth of about 50 feet beneath the terrace and 30 to 35 feet beneath the flood plain. It is over lain by a mantle of blue elay, apparently thicker under the i\ t _ under the flood plain* The flood plain is repartee. _o be composed, mainly 00 sand. 80 large wells are known to be finished la thir ct.drrial, bat iaany sand-point wells obtain a good supply of water. There appear to be threw rather good prospective sources for increasing the town water supply: ) the Bands and mve under a a xorrace (the source <» present supply) 2) the sand and gravel beneath the flood plain and I:) the S_#_i_sippian limestones. Before a final well car be decided upon from ravel sources it would be necessary to undertake a testing program. Since- the terrace sands and gravels have yielded such a satisfactory supply and are ailll produsing an adequate quantity of water, it would appear desirable to attempt to develop more' water from them. Two test holes have already been drilled near resent 'veils. These showed excellent sands and gravels, but no water was reported by the driller. Nevertheless, water is being produced from this horizon, and it mo;- be that further testing will encounter a satisfactory supply. The sands underlying the floodplain is second possibility, yarshalltown and many other towns in Iowa obtain abundant supplies from such a source. Relatively little is known about the water-bearing potentialities of these deposits at Union. It would be necessary to put down some test wells to determine the" character of the sand and gravel, particularly its coarseness and its ability to yield water. The Mississippian limestones are the third likely source for water. These rocks are expected to occur from 50 to 200 feet in depth. The entire section is

4 Mr. vsam gtorensen -2- June, 94& potentially water-bearing, but generally the lower portion yields large quantities. The mineral quality of water from the limestone is not expected to be very different froa that of the water from the sands and gravels. It may be slightly harder and contain a small amount of iron. The quantity of water available cannot be forecast accurately, but it is probable that a sufficient amount for the needs of the town coal'- be obtained from a well drilled through the limestones to the top of the Maple Kill shale. As requested, the forecast of the geologic section is carried to a depth of 400 feet, the water la the limestone and dolomite which underlies a 00 foot bed of shale La likely bo be it-ton harder than the watsr in the Mississippian rocks* For this reason it would seem inadvisable to drill below the shale occurring at an approxiaata depth of 230 feet. A generalised Beetle- based -a avion of f 6 feet is given below. i^;,yyatip;;) i and ;&e;orl oi-v >n Thickness Pro;* To. PleiS'tc-eene (loess and till, sand and j-c gravel at base $$ Blssisaippian sy_te_ Burlington ferwatioa (dolord te and chert) Hampton formation (doloffidte and ehert) ^3%^ 6o 95 *" Mania Hill and Sheffield fomations (shale yg z 9 with t_m dolomite) 5S& -3r?5 29o' 3. Devoni _t«ea SfiSMi 5re_t formation (dolomite and. limestone) (shale with tame dolomite) B j trs H0H 8E»BH H. G. Hershey Associate State Geologist

5 '.- -&//^ _ 7~i l{sucn\s QoJlA HZ \4-H3'hi- O^^d^tl'Cl I0WA GEOLOGICAL SURVEY $r6~l?t>\)-3~l DA&A In Cooperation with U«S. Geological Survey Location: Town: " RECORD OE WELL ( N" E ) ( SI): ):County.' g s.ec.g T ~.l.,rt ' ' W. Twp. Well name and number ' ' : Owner 'fo; iaddress' T i "enant Address Contractor Address /_. //i/ctosaj Drillers ' ^ & fi hnri/ _. Drilling; dates ; " ' // ~ Well data: Elevations : ---Drilling curb.,.. g'gfjgjjf feet; Land surface feet Determined by f-iqut-*. <=* i ' '' sition- /-f.e<u4. Uaj UaJlfa*4 J It-u*^ tdtnrt** / * Total depth: Reported feet, Measured feel Drilling method' j f?/j/e 7O O/ - - Hole"and casing data...j /Q -//e^-w o 4> g~5 '«5. zo V '/-v - ;. 'g,v,^w r«* T<& a : '''''/</j 7 -/ 'J&^ fri/ty, &$ i ^emt. ) Original depth to water ft. above belov/ Date Original elevation, of water level ft.; Source of data Sources of water: Principal ; Others

6 Production data: Static depth to water Pumping level Date. Ac^a 7, / 94a Measuring pointat g.p.m. Specific capacity.. g.p.m. per ft. drawdown; Temperature.» Pump dataj Type pump. Cylinder or bowls: Dia«.Column Dia» Length Length. Suction pipe Power ' Airline Estimated rate of production: Use of water.g.p.m. for hrs. day Date samples Sampled by WATER AKALISES (in parts per'million) Total solids Insoluble matter. Alkalinity (Meo) Alkalinity (Phn) ph Fe203+ MngOj; +AI2O3 Alkali as Calcium Magnesium sodium Iron (unfiltered) Manganese Nitrate Fluoride Chloride Sulfate Bicarbonate Hardness Hardness Remarks (ppm) (gpg) Laboratory data: Sample range J Spls. prepared by Driller's log and cond«insoluble residues: Prepared by Microscopic study Gen. log.ho. spls< Washed range. Studied by. strip log Correl.. by_ Sample storage location- No. dupls. & cond» by -Strip log

7 V'ht,, 87. I!-. <9 f te ;tz. no - * v-d*b»*t *#*/ '%- 72C f»^ F ^

8 */'euaft'o\a _- - ; " > o _ Qllmo^.Cdu S6 &2 2.Z ' ifo ^_B ' /<^fv ft&jt - 3 <^»»* o, ^Vi. J_lt-^V(PM-' ' - ' / t?^(l^o U-^ CaUaJ^OV^^' It 7POCOO '!.-, «- _«_ /««_ ^ «~-_E5_