A pump test was conducted to determine potential drawdowns & well interferences from a new irrigation well installed in a farming area with significant groundwater withdrawals. Three wells, the pumping well and two observation wells $($previously installed livestock wells$),$ were monitored via manual and instrument measurements during the course of the test. Use radial distances of $2700$ ft for observation well A and $2550$ ft for observation well B $.$ Test Timeline: A $4$ hour pre test starting at $5/1$at $8$:$38$ am and ending at $12$:$35$ pm was conducted in order to determine a pumping rate the well could be sustained for a $72$ hour pump test. The pumping rate varied between $1200-1300$ gpm during the test. Water levels were still recovering when the $72-$hour test began at $11$:$30$ am on $\frac{5}{2}\frac{?}{2008}$ with a pumping rate of $1000$ gpm $.$ The pump was shut off on $5/5/2008$ at $11$:$30$ am$.$ Though there are considerable differences in depths $($the area is in a basin surrounded by hills$),$ all three wells are screened in sands underlying a thick unit of clay. Determine the storativity and transmissivity of the aquifer $($to two

$\backslash$table$[[$Material$,$from,fo$],[$DARK TOP SOH.,$0,2],[$SILTY BROWN CIAY,$2,6],[$BROWN COARSE SAND,$6,10],[$BROWN BURNT CLAY,$10,14],[$SAND & SMALL GRAVEL,$14,22],[$BROWN CLAY,$22,32],[$BROWN SLITYCLAY,$32,50],[$BROWN CLAY WISM SAND STREAKS,$50,67],[$HINE BRN SAND,$67,72],[$GREYSTICKY CLAY,$72,85],[$GREY STICKY CLAY SOFT SANDSTONE FING,$85,92],[$SICKYBLLECIAY$,92,105],[$GREEN SANDY CIAY,$105,108],[$BROWNCLAY$,108,114],[$FINE SAND, SOFI SANDSTONE,$114,116],[$GreyclaY$,116,122],[$COARSE GREY SAND,$122,132],[$TANSTICKYCIAY$,132,134],[$BROWN COARSE SAND WISM CLAY LAYER,$134,165]]$

significant figures$)$ using the Cooper$-$Jacob straightline method. If you run into a "data glitch" $...$deal with it$!$ Comment on any differences you find and any potential impacts from well construction$/$ configuration. Pumping Well. Borehole diameter: $26".$ Steel casing diameter: $18",$ with slotted screen from $124$ to $164$ ft $.$ Bentonite surface seal from $0$ to $12$ ft ; cement grout, $12$ to $100$ ft $.$

Observation Well A$.({10}^{\text{'}\text{'}}$ hole drilled to $18ft$;$6^{\text{'}\text{'}}$ casing driven to $78$ ft $,$ with bentonite surface seal to $18$ ft ; nominal $6^{\text{'}\text{'}}$ hole dritled to $140$ ft $,$ but collapsed sand to $80ft$; well test indicated $100gpm$ deliver after collapse$).-$