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Mike Infuma [EH] <br /> ` From: Mike Infuma[EHJ <br /> Sent: Thursday, September 15,2011 9:17 AM <br /> To: 'Scott Bittinger' <br /> Subject: RE: 2705 Country Club Boulevard <br /> Scott, <br /> thanks for clearing that up. NO need for access agreements for my work. Each entity is an <br /> RP, and as such, access to the site is inferred. <br /> your choice on Pressure Grouting (PG) or o/bore. it's a toss up for the most part when the <br /> wells have been air-knifed first. Big expense and time to air knife and a big labor problem too <br /> if you must manually remove the dirt for the mushroom cap. There are some local drillers that <br /> have addressed this adequately with the EHD. They have a 20-24" solid core auger. after the <br /> UNDISTURBED well is pressure grouted and has stabilized, they simply auger down 30" with <br /> this large bit. they remove the bit then post hole/vac out the last six inch depth to 36" bgs <br /> leaving the PVC casing exposed. then they top the bottom 18" with grout to form the <br /> 'mushroom' head and then cover it with any material the landowner wishes. Grout can also be <br /> brought to the surface (or near) allowing for just a patch to match surrounding. <br /> this process saves time and labor. but i understand large oil companies feel the need to clear <br /> the hole first. their choice, not the EHDs. <br /> even if the well has been air knifed, I strongly recommend they do it to dimensions that provide <br /> the "12-inches larger than the original borehole" at that time. just be sure ALL work at the well <br /> head on wells destined for PG is NOT to disturb/obstruct the casing. Before the well can be <br /> pressure grouted it MUST be unobstructed and open to full depth of construction. if they block <br /> the well, it MUST be o/bored. <br /> but if they manage NOT to mess up the casing, then at PG time, after the grout stabilizes, the <br /> sand can be removed and the original hardened grout and PVC casing must be cut off at 30" <br /> bgs and grout added to overflow down the 6" and then fill the hole to at least 18" bgs with neat <br /> grout. <br /> your choice of PG or o/bore..just decide and let me know. no dif in permit fees, but chances <br /> are I'll be sending out someone else from here to monitor/inspect the work...he/she must be <br /> briefed and aware of the plan before it happens. <br /> also, any PG that fails to accomplish the goal must be followed up with the o/bore....and don't <br /> worry about the cross-contamination concern. THe drilling process is required to be <br /> continuous and grouting will occur thru the augers as soon as TD + 1 foot is reached. An <br /> acceptable condition even with conductor cased wells going thru drill out. <br /> mike <br /> From: Scott Bittinger[mailto:sbittinger@stratusinc.net] <br /> Sent:Thursday, September 15, 20118:36 AM <br /> To: Mike Infurna [EH] <br /> 9/15/2011 <br />