Table 2: Nitrogen loading according to land use in the Town of Huntington

Land Use

Synthetic Fertilizer

Manure or Septic System Nitrogen

Total Nitrate-Nitrogen

Synthetic Fertilizer

Units

(lbs./acre/yr.) (lbs./acre/yr.) (mg/l) (%)

Modern Agriculture

50

NA

9.6

100%

1929 Agriculture

25

21

8.6

54%

LD Residential

34

13

6.2

72%

MD Residential

35

27-53

8.2-11.7

40-56%

INT Residential

31

62-125

12.5-20.7

20-32%

Golf Course

91

NA

17.4

100%

Sources: Koppelman, 1978; Miller, 1980; Koppelman et al., 1984; Peterson, 1987; SCDHS, 1987; Aravena et al., 1993. LD = 1 or fewer houses/acre; MD = 2-4 houses/acre; INT = 5-10 houses/acre. The average household size in Suffolk County is 3.25 persons.