Riparia vs Blue Mountain

Different scopes of work;

Riparia Environmental is a specialized environmental contractor, while NWPW (NW Porter Works) is coordinating the project with a general contractor. 

Pricing Comparison

Item	Riparia Environmental Price (per year)	NWPW Coordinated Price (per year)
Stormwater Facility Maintenance	$7,300.00	Included in the combined price
Open Tract Space Maintenance	$5,400.00	Included in the combined price
Total Annual Cost	$12,700.00	$12,700.00
Total 2-Year Cost (2026 & 2027)	$25,400.00	$25,400.00

The total costs for the two years are identical at $25,400.00 USD from both providers. The annual breakdown is also the same.

Scope of Work Differences

The primary differences appear in the detailed description of maintenance frequency and activities:

Activity/Frequency	Riparia Environmental (Image Quote Notes)	NWPW Coordinated (User Text)
Facility Visits	Maintained 4 times per year (between April and December)	Maintained 9 times per year (between April and December)
Annual Inspection	Included as "A. Annual Inspection"	Included, with report, pictures, and recommendations
Vegetation Control	Scope is general	Specific: Nuisance vegetation removed; Invasive weeds removed/treated 4 times a year
Slope Maintenance	Scope is general	Specific: Mowed/trimmed as needed; All trash removed
Inlet/Outlet Maint.	Scope is general	Specific: Cleared regularly to maintain flow; Inspected every visit
Coordination	Mentions compliance with local regulations	Specific: Works directly with regulatory bodies on behalf of the HOA

The NWPW-coordinated bid includes a s higher frequency of visits and a more detailed, specific scope of work for the same price as the Riparia Environmental quote. Riparia Environmental specializes in environmental services and compliance, offering tailored maintenance plans and expert response to storm

Both quotes cover the same total square footage of approximately 155,000 SF in cumulative area. The line items are priced identically by year for each contractor.

Detailed Annual Line Item Comparison

Service	Riparia Environmental Annual Price	NWPW Annual Price
Stormwater Facility Maintenance	$7,300.00	$7,300.00
Open Tract Space Maintenance	$5,400.00	$5,400.00
Total Annual Price	$12,700.00	$12,700.00

The pricing structure is a direct match, item for item. The primary distinction remains the level of service provided within each line item, with the NWPW-coordinated bid offering significantly more frequent visits (9 times annually versus 4).

Routine Maintenance Activities

The scope specifies that the stormwater facilities will be visited and maintained 9 times per year between April and December. These activities are included on every visit where applicable:

A. Annual Inspection

• All stormwater infrastructure within the facilities will undergo an annual visual inspection.
• An inspection report with findings, pictures, and recommendations will be submitted to the HOA.

B. Vegetation Control

• Nuisance vegetation and trees (<12" DBH) around stormwater infrastructure will be controlled and removed as needed.
• Invasive weeds within the facilities will be removed and treated 4 times a year.

C. Slope Maintenance

• Vegetation along the side slopes and bottom of the facilities will be mowed or trimmed back as needed to maintain plant health and keep the facility in code compliance.
• All blown-in trash will be removed from within the facilities.

D. Inlet and Outlet Maintenance

• Inlets and outlets will be mowed and cleared regularly to maintain proper water flow.
• Trash, vegetation, and sediment/debris will be cleared from within 10' of the structure.
• Inlets and outlets will be inspected on every visit to ensure they remain clear and functional.

E. Collaboration with Local Authorities

• NWPW will work directly with regulatory bodies on behalf of the HOA to address any stormwater concerns or requirements.