DOE/ORO/2327 Oak Ridge Reservation Annual Site Environmental ...

Table 3.6. Group IV Storm Water Outfalls a,b
Annual Site Environmental Report
Parameter Method Frequency Sample type Minimum Maximum
Screening
level
Flow (MGD) Estimated c Weekly NA NA NA NA
pH (standard units) d EPA-150.1 Weekly Grab 6.0 9.0 8.4
Total suspended solids
SM-2540 D Quarterly Grab NA NA 70
(TSS) (mg/L)
Oil and Grease (mg/L) EPA-1664A Quarterly Grab NA NA 8.0
a
Detailed results can be found in Table 1.1 of Environmental Monitoring on the Oak Ridge Reservation:
2008 Results, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 2009. The DOE document reference is to
be determined.
b
Storm water outfall 100 shall be sampled as being representative of Group IV. The following Group IV
storm water outfalls will not be sampled: 128 and 130.
c
Technical Report 55 method with rainfall data will be used by the Environmental Compliance and
Protection Organization to estimate flows. Flow will be reported in millions of gallons per day (mgd) as
estimated daily maximum values. No flow field measurements are required.
d
The pH analyses shall be performed within 15 min of sample collection.
Parameter Method Frequency
Table 3.7. Group III Storm Water Outfalls a,b
Sample
type
Minimum Maximum
Screening
level
Flow (MGD) Estimated c Monthly NA NA NA NA
pH (standard units) d EPA-150.1 Monthly Grab 4.0 9.0 8.4
Total suspended solids
SM-2540 D Quarterly Grab NA NA 70
(TSS) (mg/L)
Oil and Grease (mg/L) EPA-1664A Quarterly Grab NA NA 8.0
a
Detailed results can be found in Table 1.1 of Environmental Monitoring on the Oak Ridge Reservation:
2008 Results, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 2009. The DOE document reference is to
be determined.
b
The following storm water outfalls shall be sampled as being representative of Group III: 05A, 154, 158,
170, 180, 190, 195, 210, 230, 280, 294, 340, 350, 360, 382, 390, 430, 490, 710, 724/760, and 992. The
following Group III storm water outfalls will not be sampled: 156, 160, 162, 168, 200, 240, 270, 292, 330, 362,
387, 440, 700, 720, 730, 740, 750, 770 and 970. Outfall 724 will be sampled as being representative of this
group, if possible. However, if seasonal fluctuations in the depth of the Clinch River cause this storm water
outfall to become flooded, which will preclude sample collection efforts, storm water outfall 760 will be
sampled instead.
c
Technical Report 55 method with rainfall data will be used by the Environmental Compliance and
Protection Organization to estimate flows. Flow will be reported in millions of gallons per day (mgd) as
estimated daily maximum values. No flow field measurements are required.
d
The pH analyses shall be performed within 15 min of sample collection.
• Group I storm water outfalls—Group I outfalls flow intermittently. They receive flow from remote
areas of the site, from administrative and other nonindustrial operation areas, and from site roads and
railways. They may discharge storm water runoff, groundwater infiltration, and groundwater from
sumps. These outfalls pose little or no threat of discharging significant amounts of contaminants. The
representative outfalls in this group must be monitored semiannually for flow and pH (Table 3.9).
The development of the ETTP Storm Water Pollution Prevention Program (SWP3) is required by
Part IV of the ETTP NPDES Permit No. TN0002950. The program is in place to minimize the discharge
of pollutants in storm water runoff from ETTP and to assess the quality of storm water discharges from
ETTP, determine potential sources of pollutants affecting storm water, and provide effective controls to
reduce or eliminate the pollutant sources. SWP3 provides a means whereby sources of pollutants that are
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