Changes

==Rehabilitation & Repair==

==Rehabilitation & Repair==

Table below provides guidance on rehabilitation and repair work specific to underground infiltration systems organized according to BMP component.  

Table below provides guidance on rehabilitation and repair work specific to underground infiltration systems organized according to BMP component.<br>

[[File:Lifting paver to clean.JPG|thumb|340px|Removign a section of pavers (where infiltration has decreased markedly, or all pavers (if necessary) should occur if surface drainage performance remains unacceptable. Joint fill and bedding layer will need be replaced at this point with new materials to help obtain initial design specifications (Photo Source: Western Interlock Inc., 2020)<ref>Western Interlock Inc. 2020.How to Remove Pavers and Replace Them. Repair & Maintenance. Authored June 2020. Accessed: 21 July 2022. https://westerninterlock.com/how-to-remove-and-replace-a-paver/</ref>]]

[[File:Underdrain clogded underground.PNG|thumb|340px|The manhole sump is becoming filled with sediment, trash and excess and debris, which is beginning to impair flow of stormwater into the [[perforated pipe]] of the [[exfiltration trench|exfiltration storm sewer system.]]]]

{|{| class="wikitable" style="width: 900px;"

{|{| class="wikitable" style="width: 900px;"

!Rehabilitation Tasks

!Rehabilitation Tasks

|-

|-

| rowspan="3"|'''[[Underdrains|Sub-drain/Underdrain]]'''

| rowspan="2"|'''[[Underdrains|Sub-drain/Underdrain]]'''

|Sub-drain perforated pipe is obstructed by trash, debris, sediment or roots

|Sub-drain perforated pipe is obstructed by trash, debris, sediment or roots

|

|

*Schedule maintenance work; First remove floating trash and debris by bucket strainer, then oil and grease by petroleum absorbing sponge. Then fully drain the row or unit by gravity, pumping or vacuuming, and remove accumulated sediment through use of a hydro-vac truck equipped with JetVac nozzle.

*Schedule maintenance work; First remove floating trash and debris by bucket strainer, then oil and grease by petroleum absorbing sponge. Then fully drain the row or unit by gravity, pumping or vacuuming, and remove accumulated sediment through use of a hydro-vac truck equipped with JetVac nozzle.

|-

|-

|'''[[Manhole control structure]]'''

|'''Manhole control structure'''

|

|

Structure or pipe connection is leaking and impairing the water storage capacity or function of the BMP

Structure or pipe connection is leaking and impairing the water storage capacity or function of the BMP