Changes

====Design verification and site walk-through====

====Design verification and site walk-through====

In preparation for finalizing the designs the project manager (PM) should conduct a walk-through of the site to verify that the designs match site conditions. This site walk-through is a critical step in the transition from design to construction and aids future pre-bid or pre-construction meetings. The PM should think carefully about how a contractor will be able to build the LID practice, determine if the design drawings and construction notes address specific LID construction requirements, and whether they contain inaccuracies or are missing detail. When field verifying the drawing set, Table X identifies details key points and considerations.  

When the design is 90 % complete, the project manager (PM) should conduct a walk-through of the site to verify that the designs match site conditions. This site walk-through is a critical step in the transition from design to construction and helps the project manager plan for future pre-bid or pre-construction meetings. The PM should think carefully about how a contractor will be able to build the LID practice, determine if the design drawings and construction notes address specific LID construction requirements, and whether they contain inaccuracies or are missing detail. Table X identifies details key points and considerations for the walk-through.

{|class="wikitable"

{|class="wikitable"

!Key considerations

!Key considerations

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|Adjacent land uses||- Have land uses changed while the design was in progress? Are there any planned land-use changes on adjacent properties and is their drainage connected to the site soon to be under construction?

|Adjacent land uses||- Have land uses changed while the design was in progress? Are there any planned land-use changes on adjacent properties and is their drainage connected to the site?

- Will it create dirty runoff that may flow onto the construction site or into the LID feature?

- Will it create dirty runoff that may flow onto the construction site or into the LID feature?

- Are any environmentally sensitive areas downstream?  

- Are any environmentally sensitive areas downstream?  

- Are there any apparent changes while the design was in progress?  If so, should these changes necessitate modifications to the design, particular ESC measures, etc.?

- Are there any apparent changes while the design was in progress?  If so, should these changes motivate modifications to the design, particular ESC measures, etc.?

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|Seasonal maintenance operations||- Will winter snow storage and salt application impact the functionality of the LID feature?

|Seasonal maintenance operations||- Will winter snow storage and salt or sand application impact the LID feature?

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|Location of LID features||- Do the proposed LID locations match the site?  

|Location of LID features||- Do the proposed LID locations match the site?  

-Does the footprint of the LID fit within the site constraints?

-Does the footprint of the LID fit within the site's constraints?

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|Existing and planned infrastructure / utilities||- Confirm accuracy of design drawings  

|Existing and planned infrastructure/utilities||- Confirm accuracy of design drawings.

- Are there any unmarked utilities not detailed within drawing set?

- Are there any unmarked utilities not detailed within the drawing set?

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|Property boundaries and building foundations||- Confirm accuracy of design drawings

|Property boundaries and building foundations||- Confirm accuracy of design drawings.

- Do fence lines align with property boundaries?  

- Do fence lines align with property boundaries?  

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|Natural heritage features and existing vegetation || - Do the designs accurately capture existing natural heritage features? Which areas on the site should be protected during construction, and will these exclusion areas make the LID facility more difficult to construct? Where are the tree drip lines?

|Natural heritage features and existing vegetation || - Do the designs accurately capture existing natural heritage features? Which areas on the site should be protected during construction, and will these exclusion areas make the LID facility more difficult to construct? Where are the drip lines of the site's trees?

- Are there any invasive species on the site which could colonize the LID practice?

- Are there any invasive species on the site which could colonize the LID practice?

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|Access, sequencing, staging, and constructability ||- Where will the contractor access the site?  

|Access, sequencing, staging, and constructability ||- Where will the contractor access the site?  

- What is the ideal construction sequence, and where could materials and supplies be stored during construction?

- What is the ideal construction sequence, and where could materials and supplies be stored during construction?

- Do site characteristics constrain standard construction practices? Will it be a difficult job?  

- Do site characteristics constrain standard construction practices? Will it be a difficult job?  

- Do constructability issues require a field change or amendment to the tender?  

- Do constructability issues require a field change or amendment to the design or project tender?  

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