Consolidated SPDES Renewals
Proposed Technical Amendment to the LIS TMDL
In January 2001, the New York State Department of Environmental Conservation ("Department") submitted A Total Maximum Daily Load Analysis to Achieve Water Quality Standards for Dissolved Oxygen in Long Island Sound (hereafter the "LIS TMDL") to the U.S. Environmental Protection Agency.
Table 6 of the LIS TMDL identifies the sum of the New York and Connecticut Waste Load Allocations ("WLAs") from each of 11 management zones. Table 7 of the LIS TMDL contains equivalency factors that identify the relative impact of nitrogen from each zone on dissolved oxygen ("DO") conditions in Long Island Sound. Compliance with the LIS TMDL can be achieved through meeting the WLAs or through new allocations resulting in equal or greater water quality improvements, as defined by the Table 7 equivalency factors. The equivalency factors comprise river delivery factors (the amount of nitrogen discharged to a river segment that makes it the mouth of the river) and Long Island Sound transport efficiencies (the relative impact of nitrogen discharged from a management zone on the hypoxic hotspots). In other words, allocations among facility-specific WLAs can be modified without resubmitting a revised LIS TMDL as long as the new allocations resulted in equal or greater water quality improvements, as determined by the use of the exchange ratios identified in Table 7 of the LIS TMDL document.
The Table 7 transport efficiencies were established from predictions of the "LIS 3.0" water quality model developed in the 1990s. A new model, called the Systemwide Eutrophication Model ("SWEM") has subsequently been developed. The Department recognized early on that SWEM had certain advantages over LIS 3.0 and that the SWEM should be used in the future, once accepted. See Department Response to Public Comments on the LIS TMDL, Modeling Tools on pg 10-11 and Recent/Future Monitoring on pg 24 (January 2001),
In light of its subsequent approval by the Long Island Sound Study and after consultation with and without objection from Connecticut DEP, the Department hereby proposes a limited amendment to the LIS TMDL to incorporate the insights from SWEM predictions of the relationship between the DO response to nitrogen discharges from zone 8 (the upper East River Management Zone) and zone 9 (the lower East River Management Zone). This limited technical amendment would support the New York City Department of Environmental Protection's ("New York City DEP") development of a long-term nitrogen control program to attain its WLAs for zone 8 and zone 9 discharges, without compromising water quality. The technical amendment would formalize the use of SWEM ratios in meeting the allocations to those zones in advance of a more comprehensive revision of the LIS TMDL. The Department is soliciting public comment on the proposed amendment before submitting it to the EPA for review and approval.
SWEM predicts a greater overall DO response from achieving the zone 8 and zone 9 WLAs than LIS 3.0. SWEM also predicts that the ratio of the transport efficiencies (the relative impact of nitrogen discharged from a management zone on the hypoxic hotspots) between zone 8 and zone 9 is 4:1, compared to the LIS 3.0 transport ratio of 2:1. Therefore, the Department proposes to modify the LIS TMDL Table 7 transport efficiencies for zone 8 and zone 9 to a 4:1 ratio from a 2:1 ratio. New York City DEP would comply with the LIS TMDL through meeting the WLAs or through new allocations using the updates to the Table 7 equivalency factors. This revision to the equivalency factors would only apply to reallocations between zone 8 and zone 9. Because SWEM predicts a greater overall DO response from achieving the zone 8 and zone 9 WLAs than LIS 3.0, this change places no additional burden on discharges from other zones to achieve water quality standards. The timeframe for using this amendment based on a combination of SWEM and LIS 3.0 ratios would be until the anticipated full SWEM technical update (and other technical updates) are incorporated into a complete LIS TMDL revision.
Public comment on the proposed amendment will be accepted for 30 days, through April 7, 2006. Comments should be submitted in writing to Philip O’Brien of Division of Water, 625 Broadway, Albany, NY 12233-3502, or by email at firstname.lastname@example.org.
Pursuant to the Environmental Conservation Law Sections 11-1303, 13-0105, 13-0335, 13-0338, 13-0339-a, 13-0340, 13-0340-b, 13-0340-c,13-0340-e, 13-0340-f, 13-0342, and 13-0347. The Department of Environmental Conservation hereby gives notice of the following:
Notice of Proposed Rule Making of Part 40 of Title 6 NYCRR relating to marine fish. This notice will be published in issue 11 of the State Register, dated 3/15/2006.
For further information contact:
205 N. Belle Mead Rd, Suite 1
E. Setauket, NY 11733
Pursuant to the Environmental Conservation Law Sections 13-0329 and 13-0331, the Department of Environmental Conservation hereby gives notice of the following:
Notice of Proposed Rulemaking for 6NYCRR Part 44 relating to lobsters and crabs. This notice will be published in issue 12 of the State Register, dated 3/22/2006.
For further information contact:
Department of Environmental Conservation
205 North Bellemeade Road
East Setauket, NY 11733
Phone: (631) 444-0454
Suffolk County - The Planning Board of the Village of Sag Harbor, as lead agency, has determined that the proposed Site Plan Application for Denop, LLC may have a significant adverse impact on the environment and a Draft Environmental Impact Statement must be prepared. The action involves an application for site plan approval to demolish an existing 792 square foot retail/office building and construction of a 4,000 square foot building, accommodating two retail establishments on the ground floor and two residential apartments on the second floor. The project is located on the east side of Main Street, 284.7 feet south of Washington Street, in the Village of Sag Harbor.
Contact: Planning Board, Village of Sag Harbor, Village Hall, 55 Main Street, P. O. Box 660, Sag Harbor, NY 11963-0015, phone: (631) 725-0222.