Best Management Practices and Discharge Monitoring

Transcription

1 Best Management Practices and Discharge Monitoring Dr. William C. Donovan, Senior Scientist Jane Wilson, Scientist 2 Bureau of Everglades Regulation South Florida Water Management District IFAS BMP Training September 26, 2013

2 Goal Successful BMP Implementation 2

3 Outline Topics Everglades Works of the District Permit Best Management Practices (BMP) Documentation Discharge Monitoring Plans Documentation Water Quality Data Summary Questions 3

4 Everglades Works of the District Permit Administrative Information BMP Plan Discharge Monitoring Plan Permit Conditions 4

5 On-site Field Visit (District Actions) Prior Review BMP Annual Report Contact and send Site Verification Checklist During Review documentation Make field observations After Follow up information Provide Report with recommendations as applicable 5

6 Site Verification Sample Checklist 6

7 BMP Plan and Documentation Permitted 25-point BMP Plan Nutrient management Particulate matter and sediment controls Water management Documentation Maps with locations and dates Receipts or invoices Photographs Maintenance records Training 7

8 BMP Plan and Documentation continued Documentation provided during site verification can be designated as a Trade Secret by permittee Filed in a separate file folder (not in report or Site Verification folder), Withheld from public inspection requests, and Redacted in epermitting (can not be viewed). 8

9 BMP Categories Nutrient Management Minimizes P movement off-site Particulate Matter and Sediment Controls Minimizes P movement off-site Water Management Practices Minimizes volume of off-site discharge Other BMPs 9

10 Nutrient Management Nutrient Application Control Review and observe fertilizer application methods Operator is responsible for providing documentation for all crops, BMPs, and lessees. Nutrient Spill Prevention Spill prevention documentation: plan and spill record Training In-house or IFAS Operator is responsible for providing documentation for all crops, BMPs, and lessees. 10

11 Nutrient Management continued Soil Test Results P Fertilizer Recommendations and Applications Application rate same or less than recommended rate No documentation needed. Application rate greater than recommended rate: Provide documentation for actual rates used, and Show application rates followed consistently. Operator is responsible for providing documentation for all crops, BMPs, and lessees. 11

12 Nutrient Management Field Observations 12

13 Particulate Matter and Sediment Controls Review sediment controls implemented Observed - Permanent Site Visit Documented - Implemented As Needed Maps with Locations and Date Receipts or Invoices Photographs Operator is responsible for providing documentation for lessees 13

14 Particulate Matter and Sediment Controls Observed and Documented BMP Vegetation on ditch and canal banks How it is Verified Observing that banks are consistently vegetated. No dead vegetation because of overuse of herbicides. Ditch bank berms Slow field ditch drainage Canal cleaning Laser leveling Aquatic vegetation Observing berms along canals and ditches, including high traffic areas. Observing risers are in place at the wiered culverts near the discharge pump. Reviewing receipts for canal cleaning or maps indicating segments cleaned and dates. Established criteria and appropriate methods (no pumping and cleaning). Reviewing receipts for laser leveling or observing the activity in the field Mechanical removal of infestation and spot spraying for maintenance. Barriers are used at discharge locations. There are no infestations at the time of visit. 14

15 Observed Sediment Controls 15

16 Documented Sediment Controls 16 16

17 Water Management Based on Criteria in Permit Compare start/stop and deviations Rainfall Water Detention (0.5, 1, and 1.5 inches) Identify periods to request Follow up pump logs Pump Logs Complete 17

18 Water Detention BMP 18

19 Water Management File Documentation Pump Logs Staff gauge readings indicating start and stop elevation Rain gauge readings Pumping events and continuous pumping over multiple days (rpm, date, time; twice/day readings) Notes explaining special pumping events, maintenance activities, etc. Identify operator 19

20 Sample Field Log Comments Critical Start/Stop Pump Elevations Not Met Planting or harvesting Weed cultivation or ground spraying operations Land prep or laser plane operations Other reasons on/off criteria not followed 20

21 Pump Log Example 21

22 Water Management Structure Field Observations Staff Gauges Rain Gauge 22

23 Discharge Monitoring Plan and Data Verify equipment, flow events, and data accuracy Evaluate Farm Level Monitoring Total P concentration RAUAL Make relative comparisons Discuss how water quality relates to on-site activities 23

24 Discharge Monitoring Plan Verification Verify Equipment Verify Accuracy of Structure Staff Gauge Readings Record structure upstream and downstream staff gauge elevations Measure upstream and downstream staff gauge elevations Compare recorded vs. measured elevations Acceptable if within 0.1 ft. Verify pump diameter, sheave ratio, and discharge pipe elevation 24

25 Verify Accuracy of Structure Staff Gauge Readings 25

26 Flow Verification Compare flow data submitted by permittee (through EWOD system) with flow data computed using requested pump logs Issues commonly encountered Missing data Discrepancies (>10%) Potential causes Process error Use of incorrect pump calibration equation 26

27 Flow Verification Example 27

28 Water Quality Data Graphs P Concentration Summary Graph Rainfall Adjusted Unit Area P Load Summary Graph P Concentration (ppm) XX-XXX-01 XX-XXX-02 Rainfall Adjusted Unit Area P Load (lb/acre) XX-XXX-01 XX-XXX Water Year Water Year 28

29 Summary During the Visit Review implementation of best management practices Discuss ways to improve Discuss current or proposed land use changes After the Visit Provide a Site Verification Report 29

30 Who to Contact Carlos Adorisio, Engineer Supervisor Bureau of Everglades Regulation Phone: (561) Dr. William C. Donovan, Senior Scientist Bureau of Everglades Regulation Phone: (561) Jane Wilson, Scientist 2 Bureau of Everglades Regulation sjwilson@sfwmd.gov Phone: (561)