2023 08 15 City Council Packet

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to replace and upsize  the pipe. Based on current RCP unit pricing,  we estimate  
approximately $67,000 in material (48” concrete pipe to match the upstream condition) 
plus equipment /labor. Realistically, that only addresses the immediate pipe size 
constraint.  The pipe could be marginally larger for future capacity. If we go up to 60” RCP, 
we estimate $107,200 in material plus equipment/labor.  
 
4. If this work was completed,  the bottleneck is then moved down to the railroad culvert, 
where it will back up during extreme rain events, but will not directly impact these two 
homes. Additionally, there is an excellent opportunity in this heavily vegetated area to 
construct green s tormwater infrastr ucture, such as a detention pond,  to further 
attenuate peak discharges downstream .  There have been extensive stormwater 
complaints downstream of this area, and doing so would also provide relief to them. The 
City has approached the Leverett’s about purchasing a portion of the undeveloped  
property to do so, but they have declined doing so. 
 
 
Figure 1 Aerial view of the project area 
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