water

MS4 General Permit Webinar

storm drain with bricks around the edge and water in the bottomOur UConn Center for Land Use Education and Research (CLEAR) is presenting on webinar on Tuesday, June 26th at 2 PM on the Year 2 Task List for MS4 General Permits.

Connecticut’s updated MS4 permit begins its second year on July 1st. Now that a year has passed, MS4 towns and institutions may be getting the hang of things but with a new year comes at least a few new tasks. 

This webinar will cover the permit tasks that recur each year, highlight the new tasks due over the next year and provide an update on upcoming workshops and new tools.
Presenters:

Amanda Ryan, Municipal Stormwater Educator & Dave Dickson, NEMO Co-Director
 

 

Is there any hope to fix our salt problem? Perhaps…

Another winter has finally ended, and messy roads and salty cars are quickly becoming a distant memory. Where did all that salt go? The millions of tons of deicing salts that get applied to our roads either wash off into local streams, or move into the local groundwater. Yet another research study has recently come out documenting the harmful effects this salt is having in the environment (see UConn Today article). Salt impacts aquatic life in streams, vegetation, and drinking water wells, creating a human health concern. Unfortunately there is no good cost-effective alternative available at this point.

Faced with this situation, New Hampshire decided to attack this problem at the source: reduce how much salt is being applied to the landscape. The Green SnowPro certification program provides municipal public works staff and private contractors with training on how to more efficiently apply deicing salts while still keeping the roads safe for travel. Information is provided on how salt actually works, what the impacts are on the environment, how to calibrate equipment, how much salt to apply given the weather conditions, and how to use anti-icing strategies. Another benefit of the program is that businesses who hire certified applicators receive reduced liability from damages arising from snow and ice conditions, creating an incentive for businesses to hire trained contractors. The New Hampshire Department of Environmental Services has reported that the program is helping to reduce salt application across the state.

Given the recent success of the program in New Hampshire, the program is being adapted here in Connecticut. UConn’s Tech Transfer Center has partnered with CT DOT, DEEP, and UConn CLEAR to pilot the program for municipal public works staff. The pilot session will be later this summer- check the T2 website for details. The goal is to expand the program to private contractors, just as New Hampshire has done.

Although our salt problem will not be fixed overnight, programs like this offer the best hope to tackle this very serious problem.

By Mike Dietz

Originally posted on CLEAR.UConn.edu

Reducing Costs and Improving Water

UConn campus in the snow
A snowy view of North Eagleville Road on Jan. 30, 2018 showing renovovations including a new median, expanded sidewalk and stone wall. (Peter Morenus/UConn Photo)

Michael Dietz from UConn Extension/CLEAR worked with the Tech Transfer Center at UConn to provide a winter operations training for UConn facilities staff. As a result of the training, salt applications were reduced by 3,600,000 pounds, improving water quality, and saving UConn roughly $200,000. Thanks to the UConn winter operations staff and the Tech Transfer Center for helping to make this happen.

Can I Water Vegetables with my Rain Barrel Water?

By Joan Allen

Originally published by the UConn Home & Garden Education Center

rain barrel against side of house in with shrubs
Photo credit: CT DEEP

Collection of rain water from roofs using rain barrels is growing in popularity because of its many environmental and practical benefits. It can help the environment by diverting water that might contain contaminants away from storm drains and the natural bodies of water that those empty into.  Depletion of well water can be a benefit when this non-potable water is used instead of the tap for things like washing cars, irrigation of plants, and flushing toilets. If you’re on a city/public water system, it can save money to use rain water where you can, too. But is using rain water to irrigate vegetables and fruits safe? Are there contaminants in it that could make people sick? Let’s take a look at what’s been studied.

A few universities in the U.S and abroad have done some work to look at potential contaminants in roof run-off water including heavy metals like zinc, copper, lead and others as well as bacteria such as E. coli and other pathogens. Testing done so far has shown low risk from these, but there is some. And of course, it depends on the type of roofing material, the environment (ie acid rain, urban vs. rural, etc) and possibly other factors. In one study, most of the metals tested the same in rain barrel water as in rain water before it hit the roofs, so little to no concern there. One exception was zinc, and elevated levels could lead to build up of this element in soils. At high enough levels, this can cause injury to plants and those plants should not be consumed (1). Monitor for this by having the soil tested.

While risk appears to be low, there were a few samples in studies (1, 2) where E. coli or total coliform bacterial levels exceeded official standards for some uses. Rain barrel water should NEVER be used for potable purposes such as drinking water, cooking or washing. Where do the bacteria in run-off come from? The main sources would be fecal matter from animals such as squirrels and birds that land and move around on the roof.

But if you’d like to water your vegetable garden with rain barrel water, are there ways to do it safely?

Dr. Mike Dietz, Assistant Extension Educator at UConn with expertise in water management recommends “not using roof water on anything leafy that you are going to eat directly. It would be OK to water soil/plants where there is no direct contact”. This is consistent with recommendations from other experts who suggest applying the water directly to the soil and avoiding contact with above-ground plant parts. An ideal set-up would be to hook up a drip irrigation system to your rain barrel(s). Pressure will be improved when they are full and if they are elevated. A full rain barrel can be pretty heavy, at about 500 lbs. for a 55 gallon unit, so make sure they are on a solid and stable base such as concrete blocks.

If possible, and this is done in larger collection systems automatically, don’t collect the ‘first flush’ of water off the roof. This would be the first few gallons. In a ¼” rainfall as much as 150 gallons can be collected from a 1000 ft2 roof surface (3). The first water to run off tends to have higher concentrations of any contaminants because of them building up on the roof since the previous rainfall event.

Another more practical way to minimize risk of pathogen/bacterial contamination is to treat the collected water with bleach. Rutgers University recommends treating 55 gallons of water by adding one ounce of unscented household chlorine bleach to the barrel once a month (or more often if rain is frequent). Allow this to stand for 24 hours before using the water for irrigation so the bleach can dissipate.

Apply collected water in the morning. Wait until leaves dry in the sun before harvesting. Ultraviolet light from the sun will have some disinfecting effect.

It is recommended to have the rain barrel water tested for E. coli. Be sure to follow the testing lab’s instructions for collection, storage and time sensitivity of the samples.

Thoroughly wash all harvested produce. In addition, you should always thoroughly wash your hands with warm, soapy water after they are in contact with collected water.

In summary, there are risks to using collected rain water for irrigation of food crops. In most cases, the risk appears to be low, and using the above sanitation practices can reduce risk.

References:

  1. DeBusk, K., W. Hunt, D. Osmond and G. Cope. 2009. Water quality of rooftop runoff: implications for residential water harvesting systems. North Carolina State University Cooperative Extension.
  2. Bakacs, M., M. Haberland and S. Yergeau. 2017. Rain barrels part IV: testing and applying harvested water to irrigate a vegetable garden. Rutgers New Jersey Agricultural Experiment Station. Fact Sheet FS1218.
  3. Rainfall as a resource. A resident’s guide to rain barrels in Connecticut. CT DEEP.

What Do You Do After You Scoop?

By David Dickson

Originally published by the UConn Center for Land Use Education and Research

cartoon of lady and dog scooping poop and not placing it in stormwater drain
Image courtesy of Rhode Island Stormwater Solutions

On my drive home last week I saw two of my neighbors walking their dogs. One of the dogs had just done his business and the owner dutifully scooped it up with a doggy doodie bag dangling from the dog’s leash. Excellent, I thought, he knows that dog poop left on the street can be carried by stormwater into our storm drain and then pollute our waterways with bacteria. As a water quality educator, I was pleased to see the “scoop the poop” message was getting out.

However, my neighbor then proceeded to drop the doodie bag directly into the storm drain! So, there is still work to do. Once you scoop it, you need dispose of it properly – either in the garbage or flushed down the toilet (minus the plastic bag). Not carry it directly to the storm drain.

This has gotten me to think more about how we educate the public about the impacts of common everyday activities on our lakes, streams and rivers. Under our new state stormwater management regulations (a.k.a, the MS4 permit) towns are required to educate their citizens on the impacts things like pet waste and fertilizer have on our waters when transported to our storm drain system. However, if towns are going to invest/spend their limited time and resources on public outreach, it makes sense that they ensure they are as effective as possible at conveying the whole message, while also keeping it simple.

CLEAR’s NEMO program is helping communities to identify ways to get these messages out. Our online MS4 Guide has examples of public outreach materials towns can use, but there are other resources as well. URI’s Stormwater Solutions program has some great public outreach materials on scooping and trashing pet waste, including cartoons like the one above. The EPA has a nice stormwater outreach”toolbox” with examples from around the country searchable by topic or media type.

Still, many of these focusing on the scooping, which at least in my neighborhood (and I’m guessing in yours) is only half the battle. So choose carefully.

Maybe someone will come up with a cute phrase that tells people what to do AFTER they scoop. “Scoop the poop and then place it in the proper receptacle” doesn’t exactly roll off the tongue.

Stormwater Research from Extension

stormwater running into a street drain

Our UConn Extension educators working in land use, and the environment have recently published two articles:

Extension Educators Mike Dietz and Chet Arnold have an article, Can Green Infrastructure Provide Both Water Quality and Flood Reduction Benefits?, in the May issue of the Journal of Sustainable Water in the Built Environment. You can read the article online at: http://s.uconn.edu/476

The UConn CLEAR NEMO team recently wrote an article on our State of LID in Connecticut study that was published in the Watershed Science Bulletin. The study looked at what is being required for stormwater management practices by Connecticut municipal land use plans and regulations. Much of the leg work for the study was carried out by our Extension intern a few years ago. The article can be read online at: http://s.uconn.edu/477.

New Rules for Corralling Runoff Require Local Actions

By JUDY BENSON

Haddam – As the state gets wetter, Connecticut cities and towns have little choice but to take better control of the water that flows over streets, parking lots and fields from rainfall and snowmelt.

“There are two drivers related to stormwater,” said David Dickson, faculty member of the UConn Center for Land Use Education and Research (CLEAR). “One is climate change. New England is seeing more rain and more intense rainfall events. The other is the MS4 general permit, which became effective in 2017.”

Dickson, speaking at a March 22 symposium sponsored by the UConn Climate Adaptation Academy, explained that MS4 — the shorthand term for the new state regulation for how municipal stormwater is managed — now requires cities and towns to reduce nonporous pavement on streets, sidewalks and parking lots. It also requires they establish “low impact development” practices as the standard for new construction. The state regulation is the result of a federal mandate under provisions of the Clean Water Act requiring gradually stricter rules to curb pollution.

“Towns have to enter into a retrofit program to reduce impervious surface areas by two percent by 2022,” Dickson said. “LID now has to be the standard for development. You can’t just say it’s too costly. This is going to change how we think about site development in this state.”

The third workshop in a series on the impacts of changing weather patterns on local land-use practices, the symposium drew about 50 municipal officials from around the state. It was presented at the Middlesex County Extension Center by the Climate Adaptation Academy, a partnership of CT Sea Grant, CLEAR and the UConn College of Agriculture, Health and Natural Resources. The Rockfall Foundation co-sponsored the event.

Overall, the purpose of the session was to educate local officials about “what works and what to watch out for to ensure success” when it comes to implementing low impact development, said Tony Marino, executive director of the Rockfall Foundation.

Dickson, the first of the four presenters, explained that with increasing amounts and intensity of precipitation, the impacts of unmanaged stormwater carrying road and agricultural pollutants into the environment are increasing.

“Stormwater is the top source of water pollution into Long Island Sound,” he said.

An illustration of a bioswale is shown during one of the presentations.
An illustration of a bioswale is shown during one of the presentations.

In the 1990s, low-impact development techniques emerged including “green roofs” covered with planted beds to absorb rainfall, grass swales to replace curbs and gutters, rain gardens and bio-retention areas with trees and shrubs situated to absorb runoff, and permeable pavement that allows water to infiltrate into the soil. That allows the soil to capture pollutants and groundwater to be recharged.

Since then, LID designs have been used at several sites on UConn’s main campus and in the Jordan Cove housing development in Waterford, among other locations around the state. While at least one-third of towns in Connecticut have adopted LID techniques at various levels, Dickson said, the new regulation means all towns will have to commit to making them the standard practice because it’s an economical and effective way to comply with the requirement to curtail stormwater runoff.

“Towns will have to start thinking about where impervious cover drains directly into their stormwater system, and enter into retrofit programs to reduce impervious areas,” he said.

Michael Dietz, water resources educator with CLEAR, said that more than 20 years after they were built, the LID features in the Jordan Cove development are still working. Research shows significantly less runoff coming from the portion of the development with LID compared to the control section built with traditional design features, he said. The LID structures continued to function even when the homeowners failed to maintain the areas correctly, he noted.

“The take-home message is that LID mostly still works, in spite of what people do,” he said.

At the main UConn campus, Dietz said, LID has “become part of the fabric of the design” for all new construction since it was first used in the early 2000s. But over those years, there have been mistakes and lessons learned, he added. In one case, curbs were installed where they weren’t supposed to be so runoff ended up being directed away from a bio-retention area. In another case, the bio-retention area was poorly located on the way students took to a dining hall, creating a compacted path that reduced its effectiveness.

“We failed to factor in people,” Dietz said.

The area, he said, was redesigned with a footpath through the middle that still allowed for runoff capture.

Some of the 50 municipal officials who attended the UConn Climate Adaptation Academy about low impact development listen during one of the presentations.
Some of the 50 municipal officials who attended the UConn Climate Adaptation Academy about low impact development listen during one of the presentations.

In another example, a parking lot next to the field house covered with permeable concrete “totally failed” last year and was allowing for “zero infiltration.” The concrete was not mixed and handled properly, he said, and curing time was insufficient, among other problems. It has been replaced with pre-cast pervious concrete blocks. Other challenges include the need for regular cleaning of pervious pavement to unclog porous spaces.

“You neglect it, it costs you down the road,” Dietz said.

Giovanni Zinn, city engineer for New Haven, said the dozens of bio-retention areas, rain gardens, swales and pervious pavement areas installed around the city do require more planning and attention.

“But if you simplify your designs, the construction will be less costly and they’ll be easier to maintain,” he said. Overall, he added, maintenance costs are less costly than for traditional infrastructure.

He advised choosing low-maintenance plantings and involving local residents and community groups in the projects. Looking ahead, New Haven is planning to build 200 more planted swales to capture runoff in the downtown area and another 75 in other parts of town.

“The bio-swales are the first step in dealing with our flash flooding issues in the downtown,” he said.

David Sousa, the final speaker, is a senior planner and landscape architect with CDM Smith, which has its headquarters in Boston and an office in East Hartford. Instead of talking about development practices to minimize runoff, Sousa focused on “how to avoid it altogether.”

He advocated for compact urban redevelopment over “big box” stores with large parking lots. Not only does this give residents stores and restaurants they can get to on foot, by bicycle or mass transportation, “it also saves acres of green fields.”

“It’s being done in our communities,” he said, citing examples in Mansfield, Stamford and Middletown. “But it’s not being done enough.”

Redevelopment of urban areas, he said, creates communities that use fewer resources, which in turn is better for the environment.

“The carbon footprint of people in cities is so much less than those with suburban lifestyles,” he said. “With less vehicle miles traveled, there is less need for impervious parking surfaces, less stormwater flooding and less emissions. We need to think about ways to avoid using LID in the first place.”

Judy Benson is the communications coordinator at Connecticut Sea Grant. She can be reached at:judy.benson@uconn.edu

Install a Rain Garden This Spring

rain garden appWhat is a Rain Garden?

A rain garden is a depression (about 6 inches deep) that collects stormwater runoff from a roof, driveway or yard and allows it to infiltrate into the ground. Rain gardens are typically planted with shrubs and perennials (natives are ideal), and can be colorful, landscaped areas in your yard.

Why a Rain Garden?

Every time it rains, water runs off impervious surfaces such as roofs, driveways, roads and parking lots, collecting pollutants along the way. This runoff has been cited by the United States Environmental Protection Agency as a major source of pollution to our nation’s waterways. By building a rain garden at your home, you can reduce the amount of pollutants that leave your yard and enter nearby lakes, streams and ponds.

Learn more, and use our app or resources to install a rain garden on your property.

New Year Resolution: Take the 40-Gallon Challenge

What are you going to do differently in 2018? How about conserving water with UConn Extension.

dripping tapUConn Extension is inviting all Connecticut residents to join the 40 Gallon Challenge and take on new practices to increase water conservation. The 40 Gallon Challenge is a national call for residents and businesses to reduce water use on average by 40 gallons per person, per day. The challenge began in 2011 as a campaign funded by the Southern Region Water Program and coordinated by the Georgia Center for Urban Agriculture and the Southern Region Drinking Water and Rural-Urban Interface Education Program Team.

As a participant in the challenge, one commits to taking on additional indoor and outdoor water savings activities. The top three most pledged commitments are: reducing irrigation station runtimes by 2 minutes, using a broom instead of a hose to clean driveways and sidewalks, and fixing a leaky toilet. There are many other commitments to choose from and each has a daily gallon savings equivalency. Some of the most impactful actions include: installing a “smart irrigation controller” that adjusts for temperature and precipitation (40 gallons daily savings), replacing an old, non-efficient showerhead with low flow showerhead (20 gallons daily savings), and fixing a leaky toilet and faucet (45 gallons daily savings). Participants are encouraged to commit to actions adding up to 40 gallons or more of daily savings.40 gallon challenge logo

This year, UConn Extension is on a mission to spread the word about the challenge and increase Connecticut’s participation. To date, the number of pledges in Connecticut is 25, compared to around 2,000 in Georgia and 4,000 in Texas, states where this program is rooted. We want to increase that number many times over, and demonstrate our commitment to preserving this critical and limited natural resource.

Participation is open to residents of all states and counties. Farmers, gardeners, business owners, homeowners, school children, and all others interested are encouraged to participate and begin the conversation in their communities about why water conservation matters.

To sign up, visit http://www.40gallonchallenge.org/ and fill out a pledge card. To learn more about what UConn Extension is doing about water quality and quantity issues in our state and region, visit http://water.extension.uconn.edu.

UConn Extension Encourages Water Conservation with the 40 Gallon Challenge

By Angie Harris

dripping tapUConn Extension is inviting all Connecticut residents to join the 40 Gallon Challenge and take on new practices to increase water conservation. The 40 Gallon Challenge is a national call for residents and businesses to reduce water use on average by 40 gallons per person, per day. The challenge began in 2011 as a campaign funded by the Southern Region Water Program and coordinated by the Georgia Center for Urban Agriculture and the Southern Region Drinking Water and Rural-Urban Interface Education Program Team.

As a participant in the challenge, one commits to taking on additional indoor and outdoor water savings activities. The top three most pledged commitments are: reducing irrigation station runtimes by 2 minutes, using a broom instead of a hose to clean driveways and sidewalks, and fixing a leaky toilet. There are many other commitments to choose from and each has a daily gallon savings equivalency. Some of the most impactful actions include: installing a “smart irrigation controller” that adjusts for temperature and precipitation (40 gallons daily savings), replacing an old, non-efficient showerhead with low flow showerhead (20 gallons daily savings), and fixing a leaky toilet and faucet (45 gallons daily savings). Participants are encouraged to commit to actions adding up to 40 gallons or more of daily savings.40 gallon challenge logo

This year, UConn Extension is on a mission to spread the word about the challenge and increase Connecticut’s participation. To date, the number of pledges in Connecticut is 10, compared to around 2,000 in Georgia and 4,000 in Texas, states where this program is rooted. We want to increase that number many times over, and demonstrate our commitment to preserving this critical and limited natural resource.

On September 15, 2017, UConn Extension will launch their outreach efforts at the Big E in Springfield, MA with pledge forms and water savings materials available to encourage Northeast residents to take the challenge. The Big E, also known as The Eastern States Exposition, is billed as “New England’s Great State Fair”. It is the largest agricultural event on the eastern seaboard and the seventh-largest fair in the nation. Participation is open to residents of all states and counties. Farmers, gardeners, business owners, homeowners, school children, and all others interested are encouraged to participate and begin the conversation in their communities about why water conservation matters.

To sign up, visit http://www.40gallonchallenge.org/ and fill out a pledge card. To learn more about what UConn Extension is doing about water quality and quantity issues in our state and region, visit http://water.extension.uconn.edu.