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Mercury
Work Group
Other Reports >> RFP Guidelines
For more
information, contact David Eppstein by email at
deppstein@masco.harvard.edu,
or by calling 617-632-2860.
Attachment
A: 360 CMR 10 - MWRA Sewer Use Regulations
10.024: Specific Discharge Limitations/Local Limits
(1) Any discharge of the following materials is prohibited:
(a) Mercury;
(b) Polychlorinated Biphenyls (PCBs);
(c) Pesticides, including, but not limited to, Dieldrin, Chlordane,
1,1,1-Trichloro-2,2-bis(p-chlorophenyl)-ethane (4-4 DDT), Demeton, Endosulfan I,
Endosulfan II, Endrin,Guthion, Heptachlor, Malathion, Methoxychlor, Mirex, Parathion,
Acrolein, Aldrin,Tetrachlorodiphenylethane (TDE),
1,1-Dichloro-2,2-bis(p-chlorophenyl)ethene (DDE),Hexachlorocyclo- hexane, Lindane,
Benzene-cis-hexachloride and benzene-trans-hexachloride (BHC), Hexachlorocyclopentadiene,
and Toxaphene;
(d) In the Metropolitan Sewerage Service Area, Phenanthrene.
(2) No Person shall discharge, or cause or allow to be discharged, directly or
indirectly into the Authority Sewerage System waters or Waste containing concentrations of
the following materials in excess of the values shown in Table 1 below.
Table 1: Daily Maximum Limits
|
Daily Maximum Limit mg/1
Metropolitan Sewerage
Service Area |
| Antimony (total) |
10.0 |
| Arsenic (total) |
0.5 |
| Boron (total) |
20.0 |
| Cadmium (total) |
0.1 |
| Chlorinated Naphthalenes |
0.8 |
| Chromium (hexavalent) |
0.5 |
| Chromium (total) |
1.0 |
| Copper (total) |
1.5 |
| Cyanide (total) |
0.5 |
| Fluoranthene |
1.5 |
| Hexachlorobutadiene |
3.0 |
| Lead (total) |
0.2 |
| Nickel (total |
) 1.0 |
| Pentachlorophenol |
0.05 |
| Phenol |
5.0 |
| Phenolic Compounds (as defined herein) |
0.5 |
| Selenium (total) |
5.0 |
| Silver (total) |
2.0 |
Toxic Organics
Each Toxic Organic not elsewhere limited in 360 CMR 10.000 |
1.0 |
| Total Toxic Organics |
5.0 |
| Trichloroethylene |
0.07 |
| Zinc (total) |
1.0 |
|
Daily Limit mg/1
Clinton Sewerage
Service Area |
| Arsenic (total) |
1.0 |
| Cadmium (total) |
0.5 |
| Chromium (hexavalent) |
1.0 |
| Chromium (total) |
5.0 |
| Copper (total) |
1.5 |
| Cyanide (total) |
1.0 |
| Lead (total) |
0.4 |
| Nickel (total) |
4.0 |
| Selenium (total) |
1.0 |
| Silver (total) |
2.0 |
Toxic Organics
Each Toxic Organic not elsewhere limited in 360 CMR 10.000 |
1.0 |
| Total Toxic Organics |
5.0 |
| Zinc (total) |
5.0 |
(3) The Daily Maximum Limit shall be determined on the basis of a Composite Sample,
except a Grab Sample or Samples may be used in the following circumstances:
(a) for a batch discharge, when the Grab Sample would be fairly representative of the
batch as a whole;
(b) for pollutants that are not amenable to composite sampling of an industrial
wastestream by use of an automatic wastewater sampler, such as hexavalent chromium and
volatile organics; or,
(c) when the Authority determines it is not feasible or appropriate to take a Composite
Sample, such as when the discharge is of too short duration for automatic composite
sampling or the sampling location is inaccessible for an automatic wastewater sampler.
A Composite Sample shall be taken at preselected intervals throughout the time in a day
during which the wastewater is discharged, except a shorter time period may be used if
that shorter time period encompasses all or most of the wastewater discharge that day or
if a shorter period is authorized by the Authority. A batch discharge may have a Composite
Sample taken throughout the discharge of the batch. A flow proportioned Composite Sample
shall be taken, except a time interval Composite Sample may be taken when the Authority
determines it is not feasible or appropriate to take a flow proportioned Composite Sample.
If a Grab Sample may appropriately be used, and more than one grab sample of a discharge
is taken during the day, the Daily Maximum Limit shall be measured by either the
mathematical average of the analytical results of the grab samples or the analytical
result of a composite of the grab samples.
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