2818 HOYT AVE FRATERNAL ORDER OF EAGLES 2022-05-23

Observations: A) Is it prudent for the Eagles(which probably utilize their kitchen 10%of the time of a typical commercial kitchen),or the City of Everett to intentionally compromise the structural integrity of the existing 18"+concrete slab to facilitate installation of a subsurface grease trap, in lieu of utilizing your proposed grease trap which has twice the capacity and is superior to the grease trap the Eagles have used successfully for decades? For me,there are two main perspectives to focus on: 1)We don't know what we don't know about the history of the tunnel and in particular,details of the BNSF fix to their self-imposed structural collapse of the Everett tunnel. It is apparent they ultimately threw millions of dollars at the problem. Was the surface slab in question in any way,part of their fix? I think that during the concrete slurry pumping process,the grout followed the path of least resistance and some of the grout ultimately found its way to the surface around the tunnel. Is this one of those vents? If so, it could vary dramatically in thickness and be much thicker than 18". If it is part of the 1980's structural fix,and much thicker than anticipated, removing enough of it to install the grease tank and piping may require a large excavator,equipped with a hydraulic impact concrete breaker(hoeram) and during the demolition process,induce significant dynamic energy into the concrete mass and surrounding soil. The vibrations resonating through the concrete could create unintended damage to the concrete mass as well as any utility,water or sewer lines in close proximity to it. 2) Whatever the BNSF railroad did back in the 1980's to stabilize their self-imposed,collapse of the Everett tunnel and the differential settlement of the earth&structures above the tunnel has sufficed for 4 decades.Anything either the Eagles,the city of Everett or any other party does which marginalizes any of the repair work done by the BNSF, regardless of how seemingly insignificant,could create unending future liabilities for the parties involved. Back in the 1990's, I consulted to a client who performed emergency repair work on BNSF projects throughout Western Washington.We were involved with BNSF projects throughout Washington state which varied from a major mudslide stabilization project in the vicinity of Ridgefield, Washington to subsurface drainage improvements and sitework restoration required for the resurrection of the Stampede Pass rail line, located adjacent to Seattle International Raceways in Kent, Washington.The common thread among all of these projects was the problem created by saturated, unstable soils which was a direct result of uncontrolled water intrusion into the soils. In light of this, I am acutely aware of the impact of something as seemingly innocuous as differential soil settlement of a fill section or a leaking or broken water line which ultimately saturates fills. In closing, considering the unending array of possible liabilities you may inherit, I strongly urge all parties involved to avoid altering or removing the slab in question. If the slab is any part of the concrete slurry operation of the BNSF tunnel repair,anyone who alters it will likely be defending themselves any time there is a future issue with the Everett tunnel. If the concrete is not a remnant of the concrete slurry operation but some sort of past stabilization method for the adjacent Eagles building,you may be creating a self-induced problem regarding the stability of both the building as well as the surrounding properties. In the future, if a waterline encased within the tunnel backfill zone starts leaking or is severed(which is not uncommon for a waterline installed decades ago which is now in a compromised fill section),you will likely be defending yourself from significant structural damages to the tunnel and 3is