Cost estimates that site planners can use to compare the relative construction and maintenance costs for structural best management practices are excellent for purposes of comparison. However, it is recommended that construction and maintenance budgets should be based on site specific information. Utilizing the table below and cost estimation worksheets for either bioretention or surface sand filter will allow designers to more accurately estimate the cost of a filtration BMP.
Surface sand filter cost estimate worksheet.
Link to this table
| Description | Units | Quantity | Unit Cost | Total Estimated Price |
|---|---|---|---|---|
| Site Preparation | ||||
| Site Formation | ||||
| Structural Components | ||||
| Site Restoration | ||||
| Annual Operation and Maintenance | ||||
| Project Title | ||||
| Owner | ||||
| Location | ||||
| Project Number | ||||
| Date | ||||
| Tree removal - up to 12" diameter | each | $350.00 | $0.00 | |
| Clear and grub brush | square yard | $1.50 | $0.00 | |
| Tree protection - temp. fence | lineal foot | $3.00 | $0.00 | |
| Topsoil - 6" depth, salvage on site | square yard | $4.50 | $0.00 | |
| Excavation - 6' depth | square yard | $8.00 | $0.00 | |
| Grading | square yard | $1.50 | $0.00 | |
| Hauling off-site - 6' depth | square yard | $10.00 | $0.00 | |
| Underdrain - with pea gravel and geotextile | lineal foot | $400.00 | $0.00 | |
| Inlet structure | each | $1,500.00 | $0.00 | |
| Sand filter media - 18" depth | square yard | $15.00 | $0.00 | |
| Outlet structure | each | $3,000.00 | $0.00 | |
| Sod filter strip | lineal foot | $1.50 | $0.00 | |
| Soil preparation | square yard | $5.00 | $0.00 | |
| Seeding - above outlet elevation | square yard | $0.50 | $0.00 | |
| Subtotal | $0.00 | |||
| 10% Contingencies | $0.00 | |||
| Subtotal | $0.00 | |||
| Apply MN Location Factor | $0.00 | |||
| TAL CONSTRUCTION COST | $0.00 | |||
| Debris removal | per visit | $50.00 | $0.00 | |
| Mowing | per visit | $150.00 | $0.00 | |
| Sediment removal | per yeart | $500.00 | $0.00 | |
| Gate / valve operation | per visiit | $125.00 | $0.00 | |
| Erosion repair | square yard | $75.00 | $0.00 | |
| Inspection | pper visitt | $125.00 | $0.00 | |
| Subtotal | $0.00 | |||
| Apply MN Location Factor | $0.00 | |||
| TOTAL ANNUAL O&M COST | $0.00 | |||
| Minnesota Location Factors | ||||
| Bemidji | 0.963 | |||
| Brainerd | 1.003 | |||
| Detroit Lakes | 0.962 | |||
| Duluth | 0.991 | |||
| Mankato | 0.990 | |||
| Bemidji | 0.963 | |||
| Minneapolis | 1.035 | |||
| Rochester | 0.983 | |||
| St. Paul | 1.000 | |||
| St. Cloud | 1.002 | |||
| Thief River Falls | 1.042 | |||
| Willmar | 0.961 | |||
| Windom | 0.935 | |||
Note: Suggested unit costs are based on RS Means prices for Spring, 2005, then factored into an area basis based on typical design features for Constructed Wetlands BMPs. To be used for preliminary cost estimation
Related pages
- Overview for sand (media) filters
- Types of sand (media) filters
- Design criteria for filtration
- Construction specifications for sand (media) filters
- Assessing the performance of sand (media) filters
- Operation and maintenance of filtration
- Calculating credits for sand (media) filters
- Cost-benefit considerations for sand (media) filters