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970625913? APIERALIA,INC PAGE 05 AmerAlia Inc. slg rattgbwbaugh Bt~d. Rifle, Co. 81650 July 10, 2000 Mr. James Cagaoy Burma of Land Mattagement 73344 Hwy 64 Mooker CO 81641 Mr. D. Edwin Hogle Director, t3roundwater Program UIC Implementation Program U.S. EPA 999 18m Street. Suite 800 Dwyer CO 80202 Mr. Allw C. Sorenson Reelamadon Spetaalist Division of Minerals and Geology 1313 Shermmr St, Room 213 Dwvar CO 80203 Subject: AmerAlia Rock School Project Bedrock Aquifor Monitoring W=Ils lone 28, 2000 Pinging and Sampling Report Dear Sirs: AmerAlia submits the following Jtmo 28, 2000 Seld activity report to provide a better understanding ofdte monitoring well purging and sampling procedoro. Roger Day, Arnold Markley and George Scffirow purged the wells. Gerry Daub colloaod the samples. MWA-Z An Izuzu 55 hp compressor was connected to the 1.9" slxxl tubing with and point depth at 475 fast at 1 L• 14 am. A 68" die by 24"tell stock tank was used to measure well discharged water. The calculated teak volume ww 16 geltons per inch. The initial well flow rate filled die tack in S minutes err 77gpm. (24"'16g/R=384 gallons in 5 minutes) 'Ibe comprcasor was shut dowv at 5:35 pm after 6.35 how of continuous well pumping. 3ust prior to shutdown, the flow rate measured 35 gpm (15.3 inches'16ga1/i~h=245ga1 in 7.1 mittutes) Initial pre-pumping wire`line depth to water from top of the wellhead out, was measured at 187.8 feet. During final flow rate test, the 1/2" pvc pipe static gas ptaseore was 210 psi or 483 fee of submergence in water. The pvc pipe is net m a depth of 81 S foci The depth to water at the cad of the pump test was 333 feet. (818'- 485') The draw down was 145 feet (333-187.9) Assmning a 56 gpm ((77+35y2) average discharge rato, the 6.25 hour pump tos<producod 21,000 gallons. The capacity of 7 S/8" casing is 2 gaVR. There is 1,516 gallons contained in dre 756 feet of cased hole below the water loveL Tho 230-foot opw hok blow the casing contains about