Action Plan for the Town of Chatham Ponds
rev 3a report.pdf - Town to Chatham
rev 3a report.pdf - Town to Chatham
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Appendix C. Recommended Water Quality Monitoring Program<br />
The existing water quality monitoring program provides an excellent foundation <strong>for</strong> tracking<br />
baseline water quality conditions. We recommend certain modifications, as outlined below.<br />
Program<br />
element<br />
Parameters<br />
measured<br />
<strong>Ponds</strong><br />
monitored<br />
by <strong>Town</strong><br />
Current Program Recommended Program Rationale<br />
Secchi disk<br />
transparency, total P,<br />
total N, chlorophyll-a,<br />
phaeophytin, total<br />
alkalinity, field<br />
parameters (pr<strong>of</strong>ile DO,<br />
pH, temperature at<br />
deepest point); Bacteria<br />
sampling at public<br />
beaches to assess<br />
suitability <strong>for</strong> water<br />
contact recreation.<br />
17 ponds Add Fox<br />
Delete Perch<br />
Same, consider if <strong>the</strong>re is a<br />
cost savings associated with<br />
dropping total N (although<br />
data consistency may be<br />
important to SMAST<br />
program)<br />
Data indicate that ponds<br />
are P limited (N:P ratio<br />
is high)<br />
(Fox) Provide guidance<br />
to homeowners<br />
regarding potential<br />
benefits <strong>of</strong> mixing.<br />
(Perch) Problematic<br />
access, natural<br />
progression to wetland<br />
well underway<br />
Frequency Variable At least monthly (May –<br />
October) <strong>for</strong> all ponds.<br />
Biweekly pr<strong>of</strong>ile and water<br />
quality sampling<br />
recommended <strong>for</strong> Stillwater<br />
and Lovers (to support<br />
alum assessment), and o<strong>the</strong>r<br />
deep ponds (Goose, White,<br />
Schoolhouse, Barclays).<br />
Matrix Water column Water column, add limited<br />
sediment testing in ponds<br />
considered <strong>for</strong> alum<br />
treatment to quantify labile<br />
phosphorus.<br />
Increased frequency will<br />
support more robust<br />
averages and better<br />
comparisons to<br />
ecoregional criteria.<br />
Need to evaluate<br />
sediment phosphorus<br />
flux<br />
EcoLogic LLC and 27<br />
November 20, 2003 Rev. 3<br />
Stearns & Wheler LLC
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