Repealed by Ord. 10-2001.
(Formerly 13.06.160; Ord. 14-1996; Ord. 4-1998; Ord. 14-2000 § 4)
Table 1: Assessment Criteria | |
|---|---|
Location Criteria | Groundwater Criteria |
1. Within 1,000 feet of the shoreline, or 2. Within 1,000 feet of wells with chloride levels greater than 160 ppm, or 3. Within 1,000 feet of wells with changes in chloride levels greater than 20 ppm. | 1. Wells completed in unconsolidated material: water level elevations less than 8 feet above sea level (based on NAVD 88), or 2. Wells completed in bedrock: pumping water level below sea level, or 3. Well tests 100 ppm or greater for chloride; or changes in chloride levels greater than 20 ppm, or 4. Well chemical analysis confirms chloride from seawater intrusion. |
Table 2: Initial Submittal Requirements | |||
|---|---|---|---|
Water Availability Applications – Individual Wells | |||
> 5 Acres | < 5 Acres | Land Division Applications | New and/or Expanding Group A and B Water System Sources |
Exempt – No requirements for seawater intrusion review | 1. Well log 2. Chloride and conductivity analysis 3. Surveyed wellhead elevation | 1. Well log 2. Complete inorganic chemical analysis 3. Surveyed wellhead elevation 4. Location coordinates 5. Proposed use 6. Pump test results | 1. Well log 2. Complete inorganic chemical analysis 3. Surveyed wellhead elevation 4. Location coordinates 5. Proposed use 6. Pump test results |
Table 3 Primary Inorganic Chemical Contaminants | |
|---|---|
Substance | MCL (mg/L) |
Antimony (Sb) | 0.006 |
Arsenic (As) | 0.010 |
Barium (Ba) | 2.0 |
Beryllium (Be) | 0.004 |
Cadmium (Cd) | 0.005 |
Chromium (Cr) | 0.1 |
Cyanide (HCN) | 0.2 |
Fluoride (F) | 4.0 |
Mercury (Hg) | 0.002 |
Nitrate (as N) | 10.0 |
Nitrite (as N) | 1.0 |
Selenium (Se) | 0.05 |
Thallium (Tl) | 0.002 |
Table 4 Secondary Inorganic Chemical Contaminants | |
|---|---|
Substance | MCL (mg/L) |
Chloride (Cl) | 250.0 |
Fluoride (F) | 2.0 |
Iron (Fe) | 0.3 |
Manganese (Mn) | 0.05 |
Silver (Ag) | 0.1 |
Sulfate (SO4) | 250.0 |
Zinc (Zn) | 5.0 |
Table 5 Secondary Physical Characteristics | |
|---|---|
Substance | MCL |
Color | 15 color units |
Specific conductivity | 700 umhos/cm |
Total dissolved solids (TDS) | 500 mg/L |