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Welborn Sullivan Meck&Tooley&Leadville Sanitation 11 June 9,2023 activities. The procedure utilizes a reference distance of 25 feet (distance from the source of vibration that the original data was collected) and involves the following three steps: 1. Select the type of construction equipment and associated vibration source levels from a table in the FTA manual(reproduced as Table 1 in Appendix D). 2. Use the following formula to make the propagation adjustment (based on point sources with normal propagation): PPVequip =PPVref(25/D)" Where: • PPVeq ;P is the peak particle velocity (in/sec) of the equipment adjusted for distance • PPVref is the reference peak particle velocity (in/sec) at 25 feet from the FTA table (refer to Appendix D, Table 1) • D is the distance from the equipment to the receiver From Appendix D, Table 1 referenced above (and shown in Table 3), A vibratory roller with a PPV of 0.210 in/sec was selected to approximate the crusher. This is considered conservative as compared to a vibratory roller since, (1) the crusher is lower energy — 22Hp vs over 120Hp for a vibratory roller and (2) that the roller runs on the ground and is designed to vibrate the ground vs. the crusher which will be mounted mounted in a fixed location. Table 3 Vibration Source Levels for Construction Equipment from the FTA.2006 Manual on Transit Noise and Vibration Assessment Equipment ('PV i in sec.).at 25 fLet thle dnaetlimWli u111"I i ui c 9 Pile Dever Isomcl - ran c - 0.734 teal ._0,1 r0 Clam shoarl drop Islutrs%all 0-20 fivdtomtOlslumwalll in soil 0.00N in cool 0.017 Hot Ram OAW9 targa 1+uI IJt icti O.M 19 C'ata+m di I II m o 0.089 Losaled I to i 0.076 Jaclhun i,o 0,035 Small bulkhve n+�' -- —- _ Sawtcc.Intoi matron from 4'tbtatton Source Lc•scl.&,t t onsuuttton Lququnem.Federal Transit dmmtsralnon.20%,Transit neisr and Mwariaror inywt i assessment.FTANA-90.1003-06.Office of Planning and 1-imtortment_Washingtom D.C..Pn4ured by Hams Miller&Hamvon.Inc..BurUnguwi,MA Vibrations arc mc�uted data from the foliowing sources: PPVs are calculated for the sewer, which is about 125ft from the crusher and the closest building at the WWTF, about 1,265ft from the crusher as shown in the Figure 4.