Source of Contamination
|
Minimum Lateral Distance
| ||
---|---|---|---|
1.
|
Subsurface sewage disposal field, cesspool,
seepage pit, in use, abandoned or reserved area
|
Where topography gradient is 1% or less or slopes
away from well site, or percolation rate is greater than 8 minutes
per inch, the minimum required distances shall comply with 310 CMR
15.00. Required distances shall be increased 50% when percolation
rate is less than 8 minutes per inch and gradient is more than 1%
and slopes toward well site.
| |
2.
|
Septic tank
|
Minimum required by 310 CMR 15.00
| |
3.
|
Building sewer/sewer lines
|
Minimum required by 310 CMR 15.03 Note 3
| |
4.
|
Property line
|
50% of minimum distance required in #1 above
| |
5.
|
Public way
|
50% of minimum distance required in #1 above
when topography gradient is 1% or less or slope is upward toward well
site. When lot slopes from public way downward to well site, distance
shall be equal to minimum required in 310 CMR 15.00
| |
6.
|
Private driveway
|
15 feet
| |
7.
|
Underground storage tanks, all uses
|
Tanks and piping shall conform to 527 CMR 9.00--
25 feet
| |
8.
|
Rights-of-way controlled by herbicides or pesticides
|
50 feet from edge of right-of-way. Owner shall
post and maintain a sign at edge of right-of-way as required in 333
CMR 11
|
Depths of Water in Well
(feet)
|
Gallons Per Minute for Four Hours
| |
---|---|---|
0 - 150
|
5
| |
150 - 200
|
4
| |
200 - 250
|
3
| |
250 - 300
|
1 1/2
| |
300 and deeper
|
1/2
|
Constituent
|
Maximum acceptable standards
| |
---|---|---|
Coliform bacteria
|
None detected
| |
Sodium (Na)
|
20 mg/l
| |
Chloride (Cl)
|
250 mg/l
| |
Nitrate nitrogen (NO3)
|
10 mg/l
| |
Nitrite nitrogen
|
0.001 mg/l
| |
Iron (Fe)
|
0.3 mg/l
| |
Manganese (Mn)
|
0.05 mg/l
| |
pH
|
6.0 - 9.0
| |
Total hardness
|
150 mg/l
|