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2020.03.12 Residential Fertilizer Ordinance Update: 2020 · 2020-03-12 · •Trademark Nitrogen...
Transcript of 2020.03.12 Residential Fertilizer Ordinance Update: 2020 · 2020-03-12 · •Trademark Nitrogen...
2020.03.12
Residential Fertilizer Ordinance Update: 2020
Agency on Bay Management
Ed Sherwood
Executive Director
Tampa Bay Estuary Program
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Partnership for a Healthy Bay
Major nitrogen load sources to Tampa Bay have changed significantly from the 1970s - Present
TBEP’s Focus on Nutrients
Partnership for a Healthy Bay
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Nitrogen Load Responsibility Fully Allocated & Capped in the Tampa Bay Watershed
Public Partners:• Hillsborough County• Manatee County• Pinellas County• Pasco County• Polk County• Sarasota County• City of Tampa• City of St. Petersburg• City of Clearwater• City of Palmetto• City of Bradenton• City of Largo• City of Lakeland• City of Oldsmar• City of Gulfport• City of Mulberry• City of Plant City• City of Safety Harbor• SWFWMD• US EPA• FDEP• FDACS• FDOH• FDOT• MacDill AFB• TBRPC• Tampa Bay Water• Tampa Port Authority• EPC of Hillsborough
County
• AEDC of Hills. County
Private Partners:• Busch Entertainment• Lowry Park Zoo
• Mosaic Co.• CSX Transportation• Florida Power &
Light• Tampa Electric Co.• Kinder Morgan Bulk
Term., Inc.• Duke Energy• Tropicana Products,
Inc.• Kerry I&F• Trademark Nitrogen• Yara N.A.• Alafia Preserve, LLC• Eagle Ridge, LLC• LDC Donaldson Knoll
Investments, LLC
<1%5%
11%
17%
66%
1%
Fertilizer Losses
Industrial Point Sources
Domestic Point Sources
Atmospheric Deposition
Nonpoint Sources
GW & Springs
MS4 Permits
NPDES Permits
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Partnership for a Healthy Bay
• From 1992-2017, >$2.5 Billion has been invested by partners in 470+ projects reducing/precluding TN loads by 530+ tons/yr to Tampa Bay • Port Fertilizer Losses: Covered conveyor belts to load product on ships
• Atmospheric Deposition: Natural gas conversion/scrubber installations
• Industrial Point Sources: Reduced discharges through water recycling/reclaimed water use
• Domestic Point Sources: Reduced discharges through reclaimed applications/Increased treatment
• Non-Point Sources (Stormwater): • Micro-irrigation/fertilization practices, tailwater recovery on agricultural lands
• Various structural and non-structural BMPs in urban/suburban
• Capturing and removing Nitrogen in traditional stormwater BMPs is Expensive & Not Very Efficient• $20 - $400+ per lb of TN removed (or about $40-800K+ per ton)
• Stormwater detention/retention typically ≤45% nitrogen removal efficiency
Addressing All Nitrogen Sources in the Watershed
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Partnership for a Healthy Bay
2008-2020: A Shift Towards Community Stewardship
•Policy Driver to Reduce Nitrogen Loads from Residential Stormwater (~40% sub/urban in 2017)
•Social Marketing Campaignto Foster Behavior Change
•Education to Reinforce and Encourage Behavior Change
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Partnership for a Healthy Bay
• Adopted by TBEP Policy Board on November 14, 2008
• TBEP Tech. Pub. #06-08
• Implemented TBEP Model Ordinance language to various degrees in Pinellas (2010) and Manatee (2014) counties, City of Tampa (2011)
Hillsborough County (2010) implemented FDEP Model Ordinance language
Policy Recommendation: TBEP Model Fertilizer Ordinance
• No use or sale of lawn/landscape
fertilizers containing Nitrogen from June 1
– September 30 (rainy season).
• All lawn/landscape fertilizers used from
Oct. - May must be ≥50% slow-release
Nitrogen.
• No application of Phosphorous at any
time unless soil test shows deficiency (P
rarely needed in Tampa Bay watershed).
• Applies to homeowners and lawn care
professionals (reciprocal BMP training,
licensing and certification).
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Partnership for a Healthy Bay
• Focus Groups Guide Campaign• Know Your Audience, Focus Messaging
Accordingly
• Fun is better than Fear!
• Engage People Where They Are • Traditional mediums + new technologies
• Retail stores/Garden centers
• 2012 & 2015 Surveys Showed an Increased Intent to Act• 47% → 63% less likely to summertime fertilize
• 29% → 70% replace all/part of lawn
• 52% → 86% plant natives & FL-friendlies
Social Marketing for Change
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Partnership for a Healthy Bay
Consistent Messaging = Reinforced Community Knowledge & Behaviors
TBEP Residential Stormwater Quality Study (2011-2013): TBEP Tech. Pub. #02-15
• Social Surveys
• Countywide Phone (n = 835)
• Targeted Residents (n = 81 in 4 neighborhoods)
• Targeted Professionals (n = 6 of 31 attempted)
• Stormwater Quality in 4 neighborhoods
• Sampling too limited to fully understand initial ordinance effects
• At least 7 years of monitoring needed to find statistically significant trends in stormwater quality that may be a result of ordinances
• Pinellas County residents were significantly more aware of fertilizer ordinances and they were significantly more likely to cite specific details prescribed by the ordinance.
• Ordinances may affect resident behavior and lead to reduced application rates (93 lb N/acre in Hillsborough vs. 38-44 lb N/acre in Pinellas/Manatee)
Example Survey Questions Hillsborough Pinellas Manatee
Have you heard about residential
fertilizer restrictions in your area?*26% 44% 24%
Do the ordinances…
Restrict the use of lawn fertilizer
during the rainy season?75% 75% 66%
Restrict the sale of lawn fertilizer
during certain months?*62% 79% 51%
Reduce the amount of phosphorous
(“P”) allowed in lawn fertilizer?*65% 77% 69%
Reduce the amount of nitrogen (“N”)
allowed in lawn fertilizer?58% 62% 66%
Require training for professional
landscaping companies?57% 52% 45%
TBEP Tech. Pub. #02-15; Souto et al. 2019
Additional Observations: Pinellas County Water Quality Trends
• Residential fertilizer ordinance with enforced use and point
of sale restrictions (Summers 2010-Present)
• Be Floridian campaign (2010-Present)
• No trend in atmospheric deposition TN rates
• Neighboring counties have not shown as widespread
decreases in TN concentrations through 2018
Data: PCDEM
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Partnership for a Healthy Bay
More Recent Research:Refining Sources of Nutrients in Residential Stormwater
• UF IFAS Research: Yang & Toor, 2016 & 2017
• Hillsborough (5) & Manatee County (1) Communities
• Atmospheric sources & fertilizers contributing a large proportion of nutrients to residential landscape stormwater
• 1-39% contribution of Nitrogen in stormwater from fertilizers
Yang & Toor 2017
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Partnership for a Healthy Bay
2020 & Beyond: Maintaining TB’s Recovery in an Urban Estuary
• Reducing Nutrient Inputs to Tampa Bay from All Sources Paramount
• Addressing Stormwater Nutrient Reductions is Challenging
• Sources of nutrients in stormwater include “fertilizers … atmospheric deposition, decaying plant material such as grass clippings left on streets, pet waste, sewage waste from leaky pipes & septic tanks, reclaimed water, and soil.”
• Increasing Suburban/Urban Impervious Areas Will Likely Increase the Delivery of Nutrients to Waterbodies, if multiple reduction strategies are not implemented
https://edis.ifas.ufl.edu/ae534
THANK YOU!www.tbep.org
Want to learn more about the State of Tampa Bay? → http://stateofthebay.tbep.org
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pinterest.com/tampabayestuary
baysoundings.com
Water Quality Has Improved
Stormwater Regulations
Enacted
TBEP Partner & NMC Actions Implemented
Power Plant Upgrades
Port Facility Upgrades
Fertilizer Restrictions
AWT & Reuse Standards
Implemented
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