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Photo credit Mary Ann Frazier, Penn State Extension.
Who are Our Pollinators? - Articles Articles

Who are Our Pollinators?

Christina Grozinger, Ph.D., Shelby Fleischer, Ph.D., Krishona Martinson

Approximately three quarters of our major food crops are pollinated. Here we will look at how wild bees provide insurance against ongoing honey bee losses. More
Small Striped Bee (Halictus). Photo USGS Bee Inventory.
What Can We Do to Encourage Native Bees? - Articles Articles

What Can We Do to Encourage Native Bees?

Christina Grozinger, Ph.D., Shelby Fleischer, Ph.D., Tianna DuPont

Pollinators need a diverse, abundant food source and a place to build their nests and rear their young. If we keep these two elements in mind we can encourage native bee populations. More
Varroa mite parasitizing bee. Thought to be one of the major factors contributing to hive losses. Photo Alex Wild.
Pollinator Declines - Articles Articles

Pollinator Declines

Christina Grozinger, Ph.D., Shelby Fleischer, Ph.D., Tianna DuPont

Domestic honey bees hives are down by 59% compared to 60 years ago with rapid declines over the last forty years. The populations of some native bee species may also be declining. More
Helping Realtors Understand On-Lot Wastewater Inspections
Helping Realtors Understand On-Lot Wastewater Inspections - Articles Articles
As part of the “home inspection” process, realtors need to understand who should conduct on-lot disposal system inspections and what outcomes to expect. More
Figure 1. Typical bioretention cell.
Rain Gardens (BioRetention Cells) - a Stormwater BMP - Articles Articles
Design guidance provided for engineers and planners on how to properly develop a bioretention cell. More
Infiltrating Stormwater
Infiltrating Stormwater - Articles Articles

Infiltrating Stormwater

Albert Jarrett, Ph.D.

Guidance to stormwater designers about assessing a potential stormwater infiltration site to determine the rate and volume of stormwater that can be expected to infiltrate into the soil. More
Rainwater Cistern (image credit - Ecology Center on flickr.com CC BY 2.0)
Cisterns for Capturing and Reusing Stormwater - Articles Articles
Guidance provided on how to develop effective runoff capture and reuse systems as part of a stormwater management plan. More
Selecting a Faircloth Skimmer
Selecting a Faircloth Skimmer - Articles Articles

Selecting a Faircloth Skimmer

Albert Jarrett, Ph.D.

A skimmer is a basin dewatering control device that withdraws water from near the basin’s water surface, removing the highest quality water from the basin for delivery to the uncontrolled environment. More
Creating an Infiltration Surface
Creating an Infiltration Surface - Articles Articles

Creating an Infiltration Surface

Albert Jarrett, Ph.D.

Information for contractors to properly build an infiltration surface; the soil surface where stormwater or wastewater is expected to enter the soil profile. More
Controlling the Dewatering of Sedimentation Basins
Controlling the Dewatering of Sedimentation Basins - Articles Articles
Design criterion provided that can be used by engineers to properly size various dewatering control features used as part of the basin’s principal spillway. More
Rock Swale
Improving Stormwater Quality - Articles Articles

Improving Stormwater Quality

Albert Jarrett, Ph.D.

Various low impact development (LIDs) practices and how effective they are at reducing pollutants in stormwater. More
Figure 1. Green roof profile schematic including materials typically included in construction.
Green Roofs for Stormwater - Articles Articles

Green Roofs for Stormwater

Albert Jarrett, Ph.D.

Guidance on how green roofs can be constructed and how they can be expected to contribute to solving stormwater problems. More
Wet Basements
Wet Basements - Articles Articles

Wet Basements

Albert Jarrett, Ph.D.

Understanding and correcting wet basements is a key topic for homeowners. More
Riego por goteo de pimientos.
Riego por Goteo para la Producción Vegetal - Articles Articles

Riego por Goteo para la Producción Vegetal

Jayson K. Harper, Ph.D., Lynn Kime, Albert Jarrett, Ph.D., Michael Orzolek, Ph.D.

La irrigación o riego por goteo o chorreo es un método muy eficiente para la aplicación de agua y nutrientes para los cultivos. More
Drip irrigation of bell peppers
Drip Irrigation for Vegetable Production - Articles Articles

Drip Irrigation for Vegetable Production

Jayson K. Harper, Ph.D., Albert Jarrett, Ph.D., Michael Orzolek, Ph.D.

Drip or trickle irrigation is a very efficient method of applying water and nutrients to crops. More
Bombus in pollinator cover crop plots. Photo credit Tianna DuPont.
Pesticides and Pollinators - Articles Articles

Pesticides and Pollinators

Christina Grozinger, Ph.D., Shelby Fleischer, Ph.D., Tianna DuPont

Researchers believe that long term honey bee declines are a result of a complex set of factors. More
Septic Tank Exit Filters Septic Tank Exit Filters - Articles

Septic Tank Exit Filters

Albert Jarrett, Ph.D.

Adding a filter to the exit baffle of a septic tank serves as the final opportunity to capture and remove partially settled particles in the wastewater. More
Hydraulic Load Test Hydraulic Load Test - Articles

Hydraulic Load Test

Albert Jarrett, Ph.D.

The Hydraulic Load Test is included as a component of the PSMA On-Lot Wastewater Inspection. More
On-Lot Filtration and Advanced Treatment Units
On-Lot Filtration and Advanced Treatment Units - Articles Articles
There are many Filtration and Advanced treatment units (FATU's) approved for use in On-Lot Wastewater Systems in Pennsylvania. More
Figure 1. Cross-section through a Micro-Mound
Drip-Irrigation Micro-Mound - Articles Articles

Drip-Irrigation Micro-Mound

Albert Jarrett, Ph.D.

The Drip-Irrigation Micro-Mound On-Lot Wastewater System is a method of distributing treatment tank (septic or aerobic) effluent to the natural soil. More
Geotextile Sand Filter (GSF) On-Lot Systems
Geotextile Sand Filter (GSF) On-Lot Systems - Articles Articles
The Geotextile Sand Filter (GSF) on-lot sewage disposal system can be designed and installed on sites with restrictive soil conditions. More
Agricultural Water Needs and Sources Water Supply
Agricultural Water Needs and Sources Water Supply - Articles Articles
Information on the volume of water needed for various agricultural purposes. More
Unused and unwanted medicines being collected.
Pharmaceutical Disposal and Water Quality - Articles Articles
This article explains the issue of pharmaceuticals in water and how to properly dispose of these products to prevent water quality contamination. More
Aerobic Treatment Units Aerobic Treatment Units - Articles

Aerobic Treatment Units

Albert Jarrett, Ph.D.

Aerobic treatment units, also called activated sludge tanks, are a common method of biological treatment used in municipal wastewater treatment facilities. More
Before You Drill A Well
Before You Drill A Well - Articles Articles

Before You Drill A Well

Albert Jarrett, Ph.D.

It is important that certain procedures be followed to ensure a clean, reliable, productive well. More
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