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611212018 The Troyer Group Mail - RE: East Race LaSalle sink hole <br />Appendix A2 <br />(-rogor grct..p Chrls Waldner <ctw@troyergroup.corn> <br />RE: East Race LaSalle sink hole <br />1 message <br />Bryan Benn <bbenn@seepipe.com> <br />To: Chris Weidner ¢clw@troyergroup.com> <br />Chris, <br />Mon, Jun 11, 2018 at 10:10 AM <br />Thanks for the opportunity to provide a cost estimate for the structure inspection and potential line inspection for the <br />LaSalle Street Sink Hale. Per our conversation the subsurface conditions are unknown and are expected to be In poor <br />condition at best. <br />I propose using Panoramo Sl to create a Virtual Viewer of the inside of the structure(similar to Google Street View). The <br />scan will also create a geometric model of the structure and unfolded view. Please see Figure 1 below. Panoramo SI will <br />fit through a 12"x 12" opening. My main concern is being able to lower the camera into the hole from directly above. <br />Figure 1 — Manhole Inspection Screenshot (Geometric data, Unfolded View, 360 Viewer) <br />If conditions allow, a CCTV Inspection camera can be lowered into the hole and inspect as far as possible. <br />Debris is expected to be in the line so total inspection distance is unknown and expected to be minimal. <br />The CCTV inspection camera has a zoom function which will be useful to capture as much information as <br />possible given the expected conditions. <br />Inspection Cost Estimate <br />MH Inspection <br />CCTV Inspection <br />$1,500.00 <br />$1,080.00 <br />https:#mall.google.com/mail/u101?u1=2&lk=c9c6e75a2a&jsver-k8XTJOJl kuE.en.&cbl=g mail_fe_180606.07_j4&vievw--pt&q=from%3A%20bbenn°/u40seepipe-com&qsl <br />