OUTFALL MONITORING. FSA Seminar 2017

Transcription

1 FSA Seminar 2017

2 OVERVIEW Outfall Selection Equipment Needs Drainage Easements Lessons Learned

3 SELECTION

4 SELECTION Identify all outfalls entering waterbody Determine drainage patterns discharging into each outfall via pipe inverts and/or contours Incorporate GIS and land uses for each sub-basin Calculate pollutant loads discharging from each outfall Per NPDES permit requirements, obtain permission from Florida Department of Environmental Protection (DEP) to monitor specific outfall

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8 To Lake Daniel

9 Lake Silver TMDL Pollutant Loading BASIN Outfall Location Acres Outfall Size TN (lbs/yr) TP (lbs/yr) Treatment Type TN with Treatmt (lbs/yr) TP with Treatmt (lbs/yr) 1 Westmoreland '' baffle box Northumberland '' na Bryn Mawr/ Western '' na Bryn Mawr/ Eastern '' na Clayton '' na Silver Dr '' na Edgewater HS '' pond Par St '' pond Alexander Ct '' pond Ardsley/ Knollwood '' baffle box Ardsley/ Roosevelt '' baffle box Ardsley/ Bryn Mawr '' baffle box TOTAL

10 EQUIPMENT NEEDS & COSTS

11 EQUIPMENT NEEDS Parameter selection Autosampler Electric Source or Solar Panels with 4 marine batteries Traffic & NEMA boxes Flow sensor Data logger Telemetry Antenna Server or desktop machine to store raw data Software to analyze flow Rain sensor (optional) Either, or both Lightning dissipator & surge protector (optional)

12 PARAMETERS Department of Environmental Protection Standard Operating Procedures for Field Activities DEP-SOP-001/01 TMDL impairments = TN & TP Current edition of DEP SOP for Field Sampling Activities Bottle type Preservation Hold times **No deviations allowed**

13 AUTOSAMPLER QCEC (not ISCO) Model: QLS * EPA-recommended * Vacuum (200 ft w/ 25 ft head) * Purge cycle No float switch Synch with flow sensor or data logger SAMPLE TAKEN EVERY 100,000 gallons

14 TRAFFIC & NEMA BOXES Both need to be vented Fiberglass cooler for electronics * Fan installed in traffic box to prevent sampler from seizing up Grounded Vandalism-free

15 FLOW SENSOR SONTEK Model: IQ PIPE Matched conditions of pipe Synch with autosampler or data logger * Used by USGS * Pitch and roll functions for sensor/data integrity

16 DATA LOGGER CAMPBELL SCIENTIFIC Model: CR6 Multi-tool for data acquisition (input & output) Synch with flow sensor and autosampler Data storage Provides details on sample events Generates alarms/alerts Valuable tool for troubleshooting

17 TELEMETRY & SOFTWARE Purchased server to store data Temporarily, used secure City Wastewater server Cellular (Verizon) Modem Omni antenna Records flow every 15 minutes Sends data every hour Purchased AQUARIUS * Used by USGS

18 RAIN SENSOR TEXAS ELECTRONICS Model: 525S Synch with autosampler or data logger Tip bucket * 1 % accuracy up to 12 inch/hour intensity Valuable for troubleshooting and evaluating flow values

19 Cost Equipment Item $5,500 Autosampler $1,000 - $13,300 Electric Installation or Solar Panel & 4 marine batteries $4,500 Traffic and NEMA boxes $8,800 Flow sensor $855 Data Logger $1,230 Telemetry & Antenna $11,500 Server $30,000 - $88,000 Software (Start-up fee. Annual renewal fees similar) $800 Rain sensor (optional) $190 Lightning dissipator & surge protection (optional) $130,675 PARTIAL TOTAL

20 SPECIAL & CONTINUAL COSTS $??? Installation $??? Consultant(s) $5,400 Parameters - TN/TP ($50 per sample x 3 samples per week x 36 weeks) $??? Electric $15 Telemetry (monthly cellular data package) $30,000 - $75,000 Software (Annual renewal fees)

21 DRAINAGE EASEMENTS

22 DRAINAGE EASEMENTS Typical drainage easements = 5 20 Practical placement of sampling equipment may exceed easement boundary Option #1 > Temporary Construction Easement Sketch & Description Dialogue between: Property Owner City Real Estate City Legal Owner may want lease & compensation

23 DRAINAGE EASEMENTS Typical drainage easements = 5 20 Practical placement of sampling equipment may exceed easement boundary Option #1 > Temporary Construction Easement Sketch & Description Dialogue between: Property Owner City Real Estate City Legal Owner may want lease & compensation Option #2 > Permanent Easement Same as above, plus + Recorded at Comptroller s Office (extra time & fee)

24 LESSONS LEARNED

25 LESSONS LEARNED 1. Pre-existing conditions Intact or damaged Weirs upstream? BMP s upstream? Volume of debris in system? Last time maintained?

26 LESSONS LEARNED 1. Pre-existing conditions 2. Avoid surcharged system Data sloshy Must hire a diver to install equipment and perform troubleshooting & maintenance Luckily, able to piggyback contract from SJRWMD Make sure divers do not arrive with HAZ MAT truck > causes panic in neighborhood

27 LESSONS LEARNED 1. Pre-existing conditions 2. Avoid surcharged system 3. Silty conditions & flushing mechanism Interferes with sensors on flow meter Installed 18 riser, but still inherited problems Divers installed plug to clean lines; however, caused fish kill within stormline and caused bad odors in immediate vicinity. Divers had to remove dead fish, as well as sediment and debris. Before install sensor, devise mechanism to flush, wipe or clean sensors on routine basis.

28 LESSONS LEARNED 1. Pre-existing conditions 2. Avoid surcharged system 3. Silty conditions & flushing mechanism 4. Perform thorough research on equipment Step outside of comfort zone and what familiar with Call other municipalities and government agencies Look for existing contracts for piggybacking Look at GSA Schedule Contracts May save time & money in long-run

29 LESSONS LEARNED 1. Pre-existing conditions 2. Avoid surcharged system 3. Silty conditions & flushing mechanism 4. Perform thorough research on equipment 5. Allow time for land acquisition and permit approvals Arrange field meeting with adjacent property owners to discuss project & importance to them and water quality Generated letters to properties immediately impacted Involves attorneys

30 LESSONS LEARNED 1. Pre-existing conditions 2. Avoid surcharged system 3. Silty conditions & flushing mechanism 4. Perform thorough research on equipment 5. Allow time for land acquisition and permit approvals 6. Engage citizens from beginning of project Start with elected officials & Office of Communications Created newsletter for all homeowners in basin Used social media to notify citizens whenever additional activity expected in area Provided Point of Contact

31 LESSONS LEARNED 1. Pre-existing conditions 2. Avoid surcharged system 3. Silty conditions & flushing mechanism 4. Perform thorough research on equipment 5. Allow time for land acquisition and permit approvals 6. Engage citizens from beginning of project 7. Correspond with NPDES Coordinator for guidance Important to keep DEP in the loop if experiencing problems or not keeping on schedule

32 LESSONS LEARNED 1. Pre-existing conditions 2. Avoid surcharged system 3. Silty conditions & flushing mechanism 4. Perform thorough research on equipment 5. Allow time for land acquisition and permit approvals 6. Engage citizens from beginning of project 7. Correspond with NPDES Coordinator for guidance and expectations 8. Have flow-modeling software in place before project starts Ability to detect problems with sensor in timely manner if have visualization software and/or filters in place

33 LESSONS LEARNED 9. Be familiar with equipment Expand intimate knowledge to discuss with consultants Installation requirements Programming Understand data outputs

34 LESSONS LEARNED 9. Be familiar with equipment 10. Contact manufacturer shortly after setup to review data Manufacturer have technical advisors to confirm data integrity and understand sensor codes and activity Manufacturer can ensure proper programming

35 LESSONS LEARNED 9. Be familiar with equipment 10. Contact manufacturer shortly after setup to review data 11. Wash room for cleaning equipment & storing ample number of jugs, bottles and coolers. Need access to acids for pre-preserving bottles and for making cleaning solution. Follow DEP SOP s for cleaning methods Need plenty of extra jugs to swap out Safe access to sulfuric, hydrochloric and nitric acids

36 LESSONS LEARNED 9. Be familiar with equipment 10. Contact manufacturer shortly after setup to review data 11. Wash room for cleaning equipment & storing ample number of jugs, bottles and coolers. Need access to acids for prepreserving bottles and for making cleaning solution. 12. Data interpretation Multiple professionals to assist with interpretation Establish written filters for discarding outliers

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39 LESSONS LEARNED 9. Be familiar with equipment 10. Contact manufacturer shortly after setup to review data 11. Wash room for cleaning equipment & storing ample number of jugs, bottles and coolers. Need access to acids for prepreserving bottles and for making cleaning solution. 12. Data interpretation 13. Telemetry can be your best friend Saves tremendous about of time Must be maintained Status of sensor Status of battery voltage Sends out alarms/alerts Informs staff if sample taken

40 LESSONS LEARNED 9. Be familiar with equipment 10. Contact manufacturer shortly after setup to review data 11. Wash room for cleaning equipment & storing ample number of jugs, bottles and coolers. Need access to acids for prepreserving bottles and for making cleaning solution. 12. Data interpretation 13. Telemetry can be your best friend 14. Power glitches Ensure surge protections in place to prevent damage Ensure equipment maintains settings & not reset to default

41 LESSONS LEARNED 9. Be familiar with equipment 10. Contact manufacturer shortly after setup to review data 11. Wash room for cleaning equipment & storing ample number of jugs, bottles and coolers. Need access to acids for prepreserving bottles and for making cleaning solution. 12. Data interpretation 13. Telemetry can be your best friend 14. Power glitches 15. Pest maintenance & vandalism Ants like electric wiring and high/dry places Wasp nests Bird droppings on solar panels Scary stickers or fake cameras to minimize vandalism

42 LESSONS LEARNED 9. Be familiar with equipment 10. Contact manufacturer shortly after setup to review data 11. Wash room for cleaning equipment & storing ample number of jugs, bottles and coolers. Need access to acids for prepreserving bottles and for making cleaning solution. 12. Data interpretation 13. Telemetry can be your best friend 14. Power glitches 15. Pest maintenance & vandalism 16. Allow plenty of time to start data collection One decision hinges on another x infinity Data collections problems occur. More sound data over course of a year; more accurate PL; more accurate supplemental plan; improved water quality

43 Questions??