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SOBIE AND ASSOCIATES, INC. PAGE 3 Paulson And Sons Inc . January 26 , 1993 Attention: Mr. Bill Paulson Re : Bill Paulson Quarry Blasting In the study of blast vibration effects , the two factors above are , at times , combined in a mathematical form called Scaled Distance (S .D) . Scaled Distance = S .D. = Distance-ftA/Max. expl . per delay-lbs EXISTING REGULATION AND CONTROL MECHANISM The following specific limiting criteria, which could most influence your quarry blasting vibration effects upon the pipeline, are referred to below. The reference is followed by our COMMENTS . It should be understood that your quarry blasting operations should conform to all Local , State , and Federal regulations regarding the use of explosives . 1 . TCG ORDINANCE Specific most influencing is " . . .no permitee shall place or explode any explosive within 200 feet of any public road or any structure not owned by permitee . . . . SAS COMMENT • The AOI SITE PLAN, indicates that the quarry operation will not be conducted within 200 ft of any public road or KPI easement. A bermed area is proposed. for An area along a major portion of the west and south property line . The quarry development plan indicated will insure a separation distance to the pipeline of of at least 200 feet . This distance will effectively result in reduced vibration intensity at the site of the pipeline . 2 . ILHR7 Page 43 , 44 , 44-1 , 2 , 3 , Subchapter VII , Blasting Resultants No specific limits are defined relating to ground vibration standards pertaining to pipelines and other utilities . Paragraph ( 4 ) , Section 2 , states " . . . . the Operator shall establish the limit after consulting with the owner of the structure . . . " . SAS COMMENT ILHR7 standards define specific vibration limits for both public and private buildings and structures . Such buildings are protected by generally very restrictive vibration limits because of the structural nature of what may be older, poorly designed and built , prestressed- buildings ( re : usually but not always residential type buildings ) . It is to be recognized that engineered structures , which were built utilizing better design, control , and construction practices , can withstand greater inten- sity of vibration than older prestressed residential type structures .