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Rainfall in the U.S.:

According to the U.S. E.P.A. Ninety percent of rain events in the U.S. never exceed ½ inch of rain per hour. A permeable pavement would capture this...


Stormwater Runoff:

According to the U.S. EPA, 40 percent of the U.S. rivers, lakes and estuaries are pollution-impaired and almost half of this problem is due to stormwater runoff. A permeable pavement would help to solve this...


Stormwater Pollution:

The three largest sources of stormwater pollution are: agriculture, urban runoff and sediment from construction sites. A permeable paving surface would fix urban runoff...


Soil and Silt:

When stormwater runoff contains soil and silt, the temperature increases and changes occur in the aquatic habitat and food supply. A permeable paving surface would lower the temperature...


Untreated Stormwater:

Untreated stormwater runoff may contain decaying leaves and other organic materials that increase bacteria and mosquito production and decrease oxygen essential for fish life. A permeable paving surface may solve this...


Where Storm Drains Lead:

The U.S. EPA estimates that approximately 70 percent of all storm drains lead directly to rivers, lakes and estuaries. This contaminated stormwater is never treated. A permeable paving surface would treat this stormwater runoff.


Stormwater Pollution:

Stormwater pollution is the largest cause of pollution in the U.S. A permeable paving surface would solve this...


Paved Parking vs Meadow:

According to one site study conducted by the U.S. EPA, the total volume of stormwater runoff from a 1-inch of rain event was 16 times GREATER for a 1 acre paved parking lot than that generated from a 1-acre meadow.

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PaveDrain Projects

February 2017

Mahtomedi Elementary School and District Office


Mahtomedi - Tractor Installing PavedrainIn August 2016 the Mahtomedi School District began a pavement reconstruction process of their existing parking lots and driveways at O.H. Anderson Elementary School and District Office. The existing pavement surface was in need of replacement, which also provided an opportunity to improve parking lot drainage and water quality discharge from both properties.


David Rey, Civil Engineer with Anderson-Johnson, worked with the school district to identify permeable pavement options and determined PaveDrain® as the best long-term solution. The PaveDrain system is designed as an open joint concept and does NOT require aggregate between the joints. Although the initial construction cost was more than traditional permeable systems, this open joint feature provided district officials a cost effective long-term maintenance plan.



Similar to many construction projects, weather related issues caused delays and the project was in jeopardy of not being ready when school started. Unlike traditional pavements, PaveDrain's open graded base aggregate allowed installation regardless of rain events or saturated soils. Structures Inc from Shakopee, MN installed the PaveDrain system using a PaverMAX Probst 301 and a Mini Excavator with a Probst Clamp. It was the first mechanical installation of PaveDrain in MN. The PaveDrain system came palletized with 11 square foot layers and was easy to install. Structures Inc installed all 35,000 square feet in just 7 days!


Owner & Engineer: Mahtomedi School District & Anderson-Johnson Engineering
Distributor: Brock White Company
St. Paul, MN
Manufacturer: Rochester Concrete Products
Rochester, MN
Installation Contractor: Structures Inc (Shakopee, MN)
Application: Parking Lot Construction with the PaveDrain System
PaveDrain Quantity: 35,000 Square Feet

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