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4-25-202 4:02PM FRC ' ''LARK WELL. INC_ 2094625597 P- 3 <br /> Apr 23 02 09: 56a *4%Wl .e P. 1 <br /> Water Well Technology, Inc. <br /> License No.C57-73i t33 <br /> P-0. Box 519 Fair Oaks,Ca 95628 <br /> (800}951-VIZ L (916)961-9355 Fax (916) 961-1773 <br /> April 23, 2002 <br /> Clark Well, Inc. <br /> Blast Perforating & Casing Ripping <br /> for <br /> Well Abandonment <br /> _Q�LSCBP71DNQF5j V " <br /> for 4 . & 6 Ac.h PV <br /> Explosive charges (plasticized rubbery tubus of 8 gms PSTN with a detonation velocity of approximately 24,000 fps) are <br /> placed at l0 foot intervals along Detonating Cord ( round flexible non electric cord/uses a core load of 50 grains of <br /> PETN per foot and has detonation velocity of approximately 22,000 fps ). The high velocity boosters blast through the <br /> PVC casing and the cord rips the casing between the boosters. The charges are placed down the well, then the <br /> well is filled with sealing material (cement). When detonated stemming (cement) stops any upward movement <br /> and directs the energy of the blast out to the casing walls. When the walls break up the explosive energy pushes <br /> the scaling material out into the formation filling any hidden voids or cavities. After detonation any drop in <br /> sealing material is simply replaced by refilling the well with the sealing material. The advantage of this <br /> system is; The well can be destroyed with the safely of the sealing material in the well to insure proper <br /> bonding of the sealing material to the formation. <br /> FWate.r�al U <br /> Initiating Device <br /> Non-alectricai fining mev^ anism used to initiate the snook Cuba. <br /> $hock Tubs; <br /> Nciseles5 tn;nk fine coated on the inside with HMX mixed Witt aluminum Sends anergy to fire the detonator. <br /> Me onaioc <br /> Non-electric blasting cap/uses 12 grains PSTN as a base charge. <br /> De;or4s'�ng Cn�d' <br /> Round flexible ncn electric cord/uses a core load of 50 grains of PETN per foo'.and has detonation velocity of approximately 22.000 <br /> fps. <br /> Boosters: <br /> Plasticized ruobery tubes of 6 gms PcTN with a detonation velocity of approximately 24,000 fps, <br /> �ternmina- <br /> CEment rr,;x from neat(27 sack per yard)to 9 sack per yard <br /> Water Well Technology.Inc. <br /> Robert J-Guarding <br /> If you have any questions please call <br /> 916 961.9355 <br />