HAR §11-54-6. Loa Point, South Kona District, clockwise to Malae Point, North Kona District

(2) Water areas to be protected: All marine waters and all areas from the shoreline at mean lower low water to a distance one thousand meters seaward, excluding Honokohau Harbor and Kawaihae Harbor. (3) The following criteria are specific to the Kona coast of the island of Hawaii, except for Honokohau Harbor and Kawaihae Harbor (see section 11-54-6(a)(3) for Class A embayments): (A) In areas where nearshore marine water salinity is greater than thirty-two parts per thousand the following specific criteria apply: | Parameter | Geometric mean not to exceed the given value | | --- | --- | | Total Dissolved Nitrogen (ug N/L) | 100.00 | | Nitrate + Nitrite Nitrogen (ug [NO_{3} + NO_{2}]-N/L) | 4.50 | | Ammonia Nitrogen (ug NH_{4}-N/L) | 2.50 | | Total Dissolved Phosphorus (ug P/L) | 12.50 | | Phosphate (ug PO_{4}-P/L) | 5.00 | | Chlorophyll a (ug/L) | 0.30 | | Turbidity (N.T.U.) | 0.10 | (B) If nearshore marine water salinity is less than or equal to thirty-two parts 54-47 3435 §11-54-6 per thousand the following parameters shall be related to salinity on the basis of a linear least squares regression equation: Y = MX + B where: Y = parameter concentration (in ug/L) X = salinity (in ppt) M = regression coefficient (or "slope") B = constant (or "Y intercept"). The absolute value of the upper ninety- five per cent confidence limit for the calculated sample regression coefficient (M) shall not exceed the absolute value of the following values: | Parameter | M | | --- | --- | | Total Dissolved | -40.35 | | Nitrogen (ug N/L) | | | Nitrate + Nitrite | -31.92 | | --- | --- | | Nitrogen | | | (ug [NO₃ + NO₂]-N/L) | | | Total Dissolved | -2.86 | | --- | --- | | Phosphorus (ug P/L) | | | Phosphate (ug PO₄-P/L) | -3.22 | | --- | --- | The specific criteria for ammonia nitrogen, chlorophyll a, and turbidity given in section 11-54-6(d)(3)(A) also apply. (C) Parameter concentrations shall be determined along a horizontal transect extending seaward from a shoreline sample location using the following method: water samples shall be 54-48 3435 §11-54-6 obtained at distances of one, ten, fifty, one hundred, and five hundred meters from the shoreline sampling location. Samples shall be collected within one meter of the water surface and below the air-water interface. Dissolved nutrient samples shall be filtered through media with particle size retention of 0.7 um. This sampling protocol shall be replicated not less than three times on different days over a period not to exceed fourteen days during dry weather conditions. The geometric means of sample measurements for corresponding offshore distances shall be used for regression calculations. L = liter. N.T.U. - Nephelometric Turbidity Units are used to measure changes in the intensity of light scattered by a water sample. The higher the intensity of scattered light means there is higher turbidity. ug = microgram or 0.000001 grams. pH Units - Shall not deviate more than 0.5 units from a value of 8.1, except at coastal locations where and when freshwater from stream, stormdrain or groundwater discharge may depress the pH to a minimum level of 7.0. Dissolved Oxygen - Shall not be less than seventy-five per cent saturation, determined as a function of ambient water temperature and salinity. Temperature - Shall not vary more than one degree Celsius from ambient conditions. Salinity - Shall not vary more than ten per cent from natural or seasonal changes considering hydrologic input and oceanographic factors. [Eff 11/12/82; am and comp 10/6/84; am and comp 04/14/88; am and comp 01/18/90; am and comp 10/29/92; am and comp 04/17/00; am and comp 10/2/04; comp 06/15/09; comp 10/21/12; am and comp 12/6/13; am and comp 11/15/14; am and comp 54-49 3435 1