Community Based Watershed Planning Ryan Chapman & Many Others - PowerPoint PPT Presentation

Community Based Watershed Planning Ryan Chapman & Many Others

 1989 – Bazile Triangle GW Study Began Gosselin, D. C. – Gosselin, D. C. – UNL Conservation & Survey UNL Conservation & Survey Div Div • 125 wells sampled • Ogallala is still relatively uncontaminated • Glacial till inhibits vertical migration • “… source of GW contamination is most likely related to fertilizer application practices.” • Creighton PWS predicted to reach 30 mg/l

 2000 – Evaluation & Assessment of Ag Contaminants in Creighton, NE  2011 – NRD hosted meeting with residents of BGMA and formally requested assistance from NDEQ 5

Lower Niobrara NRD Lewis and Clark NRD 60 60 50 50 40 40 Concentration Concentration 30 30 20 20 10 10 0 0 1980 1985 1990 1995 2000 2005 2010 1980 1985 1990 1995 2000 2005 2010 DateSampled DateSampled Upper Elkhorn NRD Lower Elkhorn NRD 60 60 50 50 40 40 Concentration Concentration 30 30 20 20 10 10 0 0 1980 1985 1990 1995 2000 2005 2010 1980 1985 1990 1995 2000 2005 2010 DateSampled DateSampled

NO3 ‐ N mg/l 20 10 12 14 16 18 0 2 4 6 8 27N2W 27N3W 27N4W 27N5W 27N6W 27N7W 27N8W 28N2W 28N3W 28N4W 28N5W 28N6W 28N7W 28N8W 29N2W 29N3W 29N4W 29N5W 29N6W 29N7W 29N8W Average Last Sample Average First Sample

Popula ‐ PWS tion AO Treatment Cost Original RO Plant (excludes engineering Creighton 1250 and equipment) 1993 USDA Loan $606,507 ” “ RO Plant rehab Current SRF Loan $1,173,790 O&M including annual depreciation ” “ over 20 years Estimated Cost $3,492,820 Brunswick 179 Replace wells, mains, and meters SRF 2014 Request $ 594,839 Place "Bad well" (9.83 ppm) on Orchard 391 AO emergency use near Osmond 796 AO Replace wells, mains, tower, and meters SRF 2014 Request $1,682,309 Plainview 1157 Replace wells and mains SRF 2014 Request $1269,667 Domestic POU Treatment Systems ($1,187.25 Wells 248 each ) Estimated Costs $294,438 TOTAL 4021 Total Cost $9,114,370 Bazile 2 –year Bazile GWMA Coordinator to 319, NET, & NRD Funding = GWMA 7,159 carry out plan objectives and implement $286,550 Plan BMPs

District Phase I Phase II Phase III Lower 50% of wells > 7.5 after 4 yrs in Phase II, 50% Nitrates 0 ‐ 7.5 ppm Niobrara ppm of wells > 9.5 ppm Upper Nitrates 0 ‐ 7.5 ppm > 7.5 ‐ 9.5 ppm > 9.5 ppm Elkhorn Lower Nitrates 0 ‐ 5.0 ppm 5.0 ‐ 9.0 ppm > 9 ppm Elkhorn Lewis & after 3 yrs 50% of wells > Nitrates 0 ‐ 5.0 ppm 5.0 ppm for 2 yrs Clark 9 ppm

Currently in Phase I  Nitrogen Management once every four years  Fall applications discouraged  Water analysis every four years  Permit for wells > 50 gpm  Deep soil sampling encouraged

Currently in Phase II  Nitrogen applicator education every four years  Deep soil sampling  Annual Report: nutrient, pest and irrigation mgmt  Encourage manure credit  No application before 11/1  Encourage monitoring equipment

Currently in Phase II  Mandatory Certification  Deep soil testing for corn ‐ corn, water  Annual fertilizer report

Currently in Phase III  Nitrogen Applicator Education (every 4 years)  Deep Soil testing ‐ Annual corn ‐ corn, biannual bean ‐ corn  Water analysis changes to every two years  No fall/winter application  Spring application >100 lbs/acre encouraged to split

 Central Platte NRD  Areas along the Platte River  Phase III

 In July 2013, NDEQ was successful in petitioning EPA Headquarters to allow planning and project implementation for groundwater areas when One or More Public Water Supplies in the area are :  Treating for Nitrates  Under Administrative Order for Nitrates  Required to conduct quarterly sampling for Nitrates.

Form a Technical Advisory Group Identify Stakeholders Conduct Public Meetings Formulate Acceptable Alternatives Develop the Implementation Plan

SHORT TERM – 5 YEARS LONG TERM – 20 YEARS  Educate 100%  Reduce average BGMA stakeholders in the nitrate concentration to area below 10 mg/l  Reduce BGMA  Maintain an adequate and Nitrate Concentration sustainable supply of GW by 3.2 mg/l for all beneficial uses  Reduce nitrate concentrations below  Ensure GW contamination 10 mg/l in community doesn’t impair surface wellhead protection water beneficial uses areas

BGMA Mean Groundwater Nitrate Concentration 18 16 20 Year Goal Nitrate Concentration (mg/l) 14 12 10 10 ppm 8 6 4 2 0 1970 1980 1990 2000 2010 2020 2030 2040

 Education  mailings, new releases, meetings, workshops, demonstration plots, WHP, 1 on 1 discussions, etc.  Monitoring  Irrigation water, soil, crop tissue and residue, flow meters, soil moisture sensors, vadose zone sampling  Nitrogen Management  Documentation and decision making with: application timing, split applications, fertigation, nitrification inhibitors, variable application, nitrogen budgeting, subsurface irrigation & well rehabilitation

 Bazile GWMA Plan has been adopted by all four NRD Boards and is approved by NDEQ, EPA ‐ 319 Hdqtrs, & EPA Region 7.  319 grant and NET grant application to hire a coordinator and implement BMPs  NRDs have pledged funds to match grants