SubPart 128-10 - Appendices

Effective Date: 
Wednesday, July 8, 1998
Doc Status: 
Complete

Section 128-10.1 - Watershed Maps

Section 128-10.1 Watershed maps.

(a) The watershed area for the New York City water supply
lies in the parts of the following counties and towns that are delineated
on Map 128-A.1:

(1) Delaware County: In the towns of Andes, Bovina,
Colchester, Delhi, Deposit, Franklin, Hamden, Harpersfield, Kortright,
Masonville, Meredith, Middletown, Roxbury, Sidney, Stamford, Tompkins,
Walton.

(2) Dutchess County: In the towns of Beekman, East
Fishkill, Pawling.

(3) Fairfield County (Connecticut): In the towns of
Danbury, Greenwich, New Fairfield, Ridgefield, Sherman.

(4) Greene County: In the towns of Ashland, Halcott,
Hunter, Jewett, Lexington, Prattsville, Windham.

(5) Putnam County: In the towns of Carmel, Kent, Patterson,
Putnam Valley, Southeast.

(6) Schoharie County: In the towns of Broome, Conesville,
Gilboa, Jefferson.

(7) Sullivan County: In the towns of Fallsburg, Liberty,
Neversink.

(8) Ulster County: In the towns of Denning, Hardenburgh,
Hurley, Kingston, Marbletown, Olive, Rochester, Shandaken, Wawarsing,
Woodstock.

(9) Westchester County: In the towns of Bedford, Cortlandt,
Harrison, Lewisboro, Mount Kisco, Mount Pleasant, New Castle, North Castle,
North Salem, Pound Ridge, Somers, Yorktown.

(b) The watershed areas for the New York City water supply
that lie within the 60 day travel time to intake are delineated on Map
128-A.2

(1) In the East-of-Hudson System, the entire reservoir and
controlled lake drainage basins of Boyds Corner, Croton, Kensico, Lake
Gleneida, Muscoot, West Branch, and parts of the reservoir drainage basins
of Amawalk, Cross River, Croton Falls, and Titicus are within the 60 day
travel time to intake.

(2) In the West-of-Hudson System, the entire reservoir
drainage basin of Rondout, and parts of the reservoir drainage basins of
Ashokan, Cannonsville, Neversink and Pepacton are within the 60 day travel
time to intake.

(c) The reservoir drainage basins for each reservoir are
delineated on Map 128-A.3.

(d) Detailed maps of each area within the 60 day travel
time to intake are available at the New York State Department of Health and
the regional offices listed in section 128-1.5 of Subpart 128-1.

Effective Date: 
Wednesday, July 8, 1998
Doc Status: 
Complete

Section 128-10.2 - System Specific Water Quality Characteristics

Section 128-10.2 System Specific Water Quality Characteristics

The system specific water quality characteristics of the reservoirs and reservoir stems, as of September 1990, are set forth in Tables 1 and 2 of this Appendix. It is the intention of the Department that the system specific characteristics be maintained at the stated levels by implementation and enforcement of these rules and regulations.

 

TABLE 1

 

System Specific Characteristics: Reservoir Standards (mg/L)
 
 
      Catskill/Delaware
      System
  Croton System (including Kensico)
  Annual   Annual  
  Mean S/S/M* Mean S/S/M*
         
Alkalinity        
(mg CaCo(3)/L) ≥40.00   ≥10.00  
Ammonia Nitrogen 0.05 0.10 0.05 0.10
Chloride 30.00 40.00 8.00 12.00
Nitrite+        
Nitrite - N 0.30 0.50 0.30 0.50
Organic Nitrogen 0.50 0.70 0.50 0.70
Sodium 15.00 20.00 3.00 16.00
Sulfate 15.00 25.00 10.00 15.00
Total Diss. Solids 150.00 175.00 40.00 50.00
Total Organic Carbon 6.00 7.00 3.00 4.00
Total Susp. Solids 5.00 8.00 5.00 8.00
Chlorophyll-a 0.01 0.015 0.007 0.012
*S/S/M means Single Sample Maximum

 

TABLE 2

 

System specific characteristics: Reservoir Stem Standards (mg/L)
 
 
      Catskill/Delaware
      System
  Croton System (including Kensico)
  Annual   Annual  
  Mean S/S/M* Mean S/S/M*
         
Alkalinity        
(mg CaC03/L) ≥40.00   ≥10.00  
Ammonia Nitrogen 0.10 0.2 0.05 0.25
Chloride 35.00 100.00 10.00 50.00
Nitrite +        
Nitrate - N 0.35 1.50 0.40 1.50
Organic Nitrogen 0.50 1.50 0.50 1.50
Sodium 15.00 20.00 5.00 10.00
Sulfate 15.00 25.00 10.00 15.00
Total Diss. Solids 150.00 175.00 40.00 50.00
Total Organic Carbon 9.00 25.00 9.00 25.00
Total Susp. Solids 5.00 8.0 5.00 8.00
*S/S/M means Single Sample Maximum

 

Effective Date: 
Wednesday, July 8, 1998
Doc Status: 
Complete

Section 128-10.3 - Tests for Analytical Determination of Concentrations of Elements

Section 128-10.3 Tests for Analytical Determination of Concentrations of Elements.

The following tests and methods are used by the Department in assessing the impacts of a regulated activity on a reservoir, reservoir stem or controlled lake. An applicant may conduct sampling in waters owned by the City as set forth herein with prior authorization by the Department.

(a) Collection of Samples and Assessment of Impacts (1) In conducting tests or making analytical determinations to ascertain conformity or nonconformity with the standards set forth in Subpart 128-4, samples should be collected from locations which are representative of the general quality of water in the watercourse, reservoir, reservoir stem or controlled lake.

(2) In assessing the impact of a proposed regulated activity on a watercourse, reservoir, reservoir stem, or controlled lake, or in determining compliance with the standards set forth in Subpart 128-4, the Department will examine the impacts of the proposed activity throughout the year and the impacts on the photic, metalimnion and hypolimnion zones of the reservoir, reservoir stem or controlled lake.

(3) Impacts on reservoirs will be determined on the basis of samples taken on a schedule which is sufficient to reflect temporal variability and to meet regulatory requirements.

(4) Sampling locations in reservoirs will include: dams, intakes, mid-pool stations, and main tributaries into each reservoir. At every station, an integrated sample of the photic zone shall be taken. At deeper stations, samples will be collected from the metalimnion and hypolimnion.

(5) Reservoir stem samples should be collected in the section of the reservoir stem that is free-flowing and unimpeded by the reservoir when the impoundment is at full pool elevation.

(b) Tests and Analytical Determinations. Tests or analytical determinations to determine compliance or noncompliance with the water quality standards in Subpart 128-4 should be made in accordance with:

(1) Standard Methods for the Examination of Water and Wastewater, 12th edition, l965, Table 18, Qualitative Description of Odors, page 306. American Public Health Association , American Water Works Association, and Water Pollution Control Federation, 2626 Pennsylvania Avenue NW, Washington, D.C. 20037.

(2) Standard Methods for the Examination of Water and Wastewater, 18th edition, 1992, American Public Health Association, American Water Works Association, and Water Environment Federation, 2626 Pennsylvania Avenue NW, Washington, D.C. 20037.

(3) Methods for Chemical Analysis of Water and Wastes, 1979, Environmental Protection Agency (EPA), Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402; and (4) By other methods approved by the Commissioner as giving results equal or superior to methods listed in any of the above documents.

(c) All materials referenced in this Appendix are available for inspection and copying at the New York State Department of Health, Office of Regulatory Affairs, Tower Building, Room 2415, Empire State Plaza, Albany, New York, 12237, and the Department of Environmental Protection, 465 Columbus Avenue, Valhalla, N.Y.

Effective Date: 
Wednesday, July 8, 1998
Doc Status: 
Complete