TABLE 7.5 Groundwater Standards Applicable in the Commonwealth of Virginia by Physiographic Province

Concentration

Piedmont &

Cumberland

Constituent

Coastal Plain

Blue Ridge

Valley and Ridge

Plateau

pH

6.5-9

5.5-8.5

6-9

5-8.5

Ammonia nitrogen

0.025 mg/L

0.025 mg/L

0.025 mg/L

0.025 mg/L

Nitrite nitrogen

0.025 mg/L

0.025 mg/L

0.025 mg/L

0.025 mg/L

Nitrate nitrogen

5 mg/L

5 mg/L

5 mg/L

5 mg/L

SOURCE: 9 VAC 25-280-50.

TABLE 7.6 Groundwater Criteria

Groundwater Criteria by Physiographic Province (mg/L)

Piedmont &

Cumberland

Constituent

Coastal Plain

Blue Ridge

Valley and Ridge

Plateau

Alkalinity

30-500

10-200

30-500

30-200

Total dissolved solids

1,000

250

500

500

Chloride

50"

25

25

25

Sulfate

50

25

100

150

Total organic carbon

10

10

10

10

Color

15

15

15

15

Iron

0.3

0.3

0.3

0.01-10

Manganese

0.05

0.05

0.05

0.01-0.5

Sodium

100a

25

25

100

Fluoride

1.4b

1.4

1.4

1.4

Hardness

120

120

300

180

NOTE: Because natural groundwater quality can vary greatly from area to area for these constituents, enforceable standards were not adopted. These criteria are intended to provide guidance in preventing groundwater pollution. Groundwater criteria are not mandatory.

aIt is recognized that naturally occurring concentrations will exceed this limit in the eastern part of the Coastal Plain, especially toward the shoreline and with increased depth.

bExcept within the Cretaceous aquifer, concentration up to 5 mg/L and higher.
SOURCE: 9 VAC 25-280-70.

Regulatory Program Funding and Resources

Regulatory programs at the state level are supported by fees that are assessed on regulated industries. The fee structure is created to recover the cost of resources expended for implementing a regulatory agency’s responsibilities, including staffing, training, and equipment. Since regulations must be developed prior to collecting fees, the initial development of regulations is usually not covered by fees, and if the uranium mining moratorium were to be lifted, then



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement