Presentation is loading. Please wait.

Presentation is loading. Please wait.

Indian Ponds Association “To preserve and protect the natural environment and ecological systems of the Indian Ponds and to participate in studies and.

Similar presentations


Presentation on theme: "Indian Ponds Association “To preserve and protect the natural environment and ecological systems of the Indian Ponds and to participate in studies and."— Presentation transcript:

1

2 Indian Ponds Association “To preserve and protect the natural environment and ecological systems of the Indian Ponds and to participate in studies and work with other agencies to educate the public, serve the community, and promote and preserve the Indian Ponds and surrounding areas”

3 Indian Ponds Association (IPA) History 1958IPA founded 1961One-acre zoning around ponds acre conservation area hp. maximum for motors 1981Prevented draining of ponds 2001Newsletter and website 2003First edition of A Resident’s Guide to the Indian Ponds nd edition of A Resident’s Guide

4 Indian Ponds, Marstons Mills MA Mystic Lake Middle Pond Hamblin Pond

5 Mystic Lake (top), Middle Pond, Hamblin Pond (bottom)

6 Chain Pickerel Largemouth Bass Brown Bullhead Pumpkinseed Sunfish Yellow Perch Smallmouth Bass Fishes of Mystic Lake

7 New England Bluet Damselfly Comet Darner Dragonfly Eastern Pondmussel Tidewater Mucket Triangle Floater Species “of Special Concern” – Mystic Lake

8 First Pond Study,

9 Pond Study Findings for Mystic Lake Lost 10 vertical feet of oxygenated water in prior 50 years Impacted by high levels of phosphorus (P) –16 ppb in summer –10 ppb is acceptable Principal source of P was regeneration from sediments in summer conditions of low O 2 Watershed sources of P found to be insignificant Recommendations for Mystic Lake: –Remediation of P (alum, aeration, etc.) –Continued testing –Address watershed sources of P, review of regulations

10

11 Septic System Study Average age of residences within 300’ is 35 years Average distance of leachfields is 196’ from Mystic Lake P travels in ground water at rate of 1 m/yr Average time to reach lake ~ 60 years

12

13 Obtaining Funding June, 2006 – Design and Permitting funded - $80K Spring, 2007 – Remediation project approved for inclusion in TOB capital budget - $275K Promoted by campaign of letters and s and IPA presentations to Town Manager and Council

14 Design and Permitting Phase Performed by ENSR (now AECOM) ENSR performed on-site sampling and testing in summer, 2007 –sampled substrate, vegetation, mussels –mapped mussel habitat by video and GPS Recommended alum treatment to inactivate P in the sediments Prepared a report making the case for permitting

15 Natural Heritage (NHESP) Administers the Massachusetts Endangered Species Act (MESA) Receives ~3,000 Notices of Intent (NOI) per year Approves Mystic Lake alum treatment NOI was presented by ENSR

16 NHESP Denied Approval Notice of Intent (NOI) for Nutrient Inactivation of Mystic Lake presented to NHESP October, 2008 NHESP, in November, 2008, declined to issue an approval Reasons: –Harm to threatened mussels from alum –Harm to pond’s primary productivity; mussel nutrition –No scientific evidence provided IPA and Town formed an Alum Working Group to address the permitting challenge.

17 First Meeting: NHESP’s Position Questioned validity of CCC Pond Study Pond was in better condition than we said it was and would be fine for many more years Even if pond were dying, there was nothing they could do Evidence presented wasn’t good enough to convince them that using alum would benefit the mussels Presence of so many mussels was evidence that pond was OK

18 Second Meeting with NHESP IPA and Town returned to NHESP in June, 2009, with a proposal for a reduced dose of alum and monitoring of mussels before, during and after treatment. NHESP said they would consider it.

19 Catastrophe On August 16, 2009, Mystic Lake turned green Tens of thousands of mussels died

20

21 IPA Activities During Algae Bloom Tested transparency, DO, and temperature every 2 days Searched for live mussels; found very few Made video recording of mussel carnage underwater

22 NHESP Turnaround On August 30, NHESP sent a draft letter approving an alum treatment with conditions attached –reduced dosage (25 g/m 2 ) –professional surveys of mussels before, during, after treatment –caged mussel observations –fall application

23 New Bathymetric Chart of Mystic Lake, 2009

24 Third Meeting with NHESP March, 2010 NHESP agreed to include northern basins in treatment footprint NHESP agreed to variable alum dosages depending on amount of P found in sediment sample, up to 50 mg/m 2

25 Success Factors Strong pond organization –scientists, engineers on Board –communication with members via Newsletter. website, s –communication with people in government

26 Success Factors Science based approach –quantitative –based on peer-reviewed research Pond testing –at least once each summer; more is better –record results systematically; keep in a safe place –build a historic data base –train volunteers for backup

27 Success Factors Building a network –with key people in government –with scientists –with other pond organizations –with our local constituency Building a strong organization –ongoing recruitment –sharing of responsibility –communication Persistence

28 Never lose hope!

29 For More Information To obtain: –A copy of this presentation –A Resident’s Guide to the Indian Ponds –IPA Newsletter subscription Website:


Download ppt "Indian Ponds Association “To preserve and protect the natural environment and ecological systems of the Indian Ponds and to participate in studies and."

Similar presentations


Ads by Google