Opinion ID: 408243
Heading Depth: 1
Heading Rank: 2

Heading: Restore the pond area to an acceptable state of natural vegetation.

Text: 58 (d) Permittee shall conduct studies to assure that thermal discharges will have minimal impact on striped bass (Morone saxtilis ) during extended periods of zero flow as described in Section 4.1.2 of the Update to the CRBRP Alternative Siting Analysis Within the TVA Power Service Area (dated May 28, 1982). 59 Permittee shall not start construction of the plant discharge structure prior to submittal of reports on these studies and receiving approval by the Director, Water Management Division to start such construction. Such studies and reports shall include (1) coordination with TVA studies on lethal temperatures for adult and juvenile striped bass, (2) statistical analysis of streamflow during the months of July through September, (3) reevaluation of the thermal plume dispersion, and if necessary, (4) a review of alternative diffuser designs and thermal modeling. In the event that the above studies fail to demonstrate that the CRBRP thermal discharge will have no significant impact on the striped bass thermal refuge, the NPDES permit shall be modified to impose more stringent thermal limitations on plant discharges. 60 (e) Permittee shall implement an approved preoperational non-radiological aquatic monitoring program to reestablish baseline data on water quality and biotic conditions in the Clinch River not less than two years prior to the scheduled date for fuel loading. Not less than six months prior to the scheduled date for implementation, the permittee shall submit to the Director, Water Management Division, EPA, Region IV, for review and approval, a detailed monitoring plan. Reports shall be submitted annually, not more than three months following completion of the reporting period with the first report due 15 months after implementation of the program. The program shall continue for a period of not less than two years, unless mutually agreed to by EPA and CRBRP. 61 (f) Permittee shall implement an approved operational non-radiological aquatic monitoring program on the first day of operation. Not less than six months prior to scheduled implementation date, the permittee shall submit to the Director, Water Management Division, EPA, Region IV, for review and approval, a detailed monitoring plan. Reports shall be submitted annually, not more than three months following completion of the reporting period with the first report due 15 months after implementation of the program. The program shall continue for a period of not less than two years, unless mutually agreed to by EPA and CRBRP. 62 (g) Effluent limitations and monitoring requirements: 63 During the period beginning on start of discharge and lasting through expiration the permittee is authorized to discharge from outfall(s) serial number(s) 003 through 008-Point source runoff from areas of construction and yard drainage to unnamed ditches to the Clinch River. (003, 004 and 008 may also receive dewatering waste and/or other small sources and 007 may also receive overflow from the Concrete Wash Settling Pond and the Aggregate Washing Settling Pond during abnormal rainfall periods.) 64 Such discharges shall be limited and monitored by the permittee as specified below: 65 Effluent Discharge Monitoring Characteristics Limitations Requirements --------------- ----------- ------------ Instantaneous Measurement Sample Maximum Frequency Type Flow - m 3/ Day (MGD) N/A 1/week 1/ Grab Total Suspended Solids (mg/1) 2/ 1/week 1/, 3/ Grab Oil and Grease (mg/1) 5/ 5 5/ 1/week 1/, 5/ Grab 5/ Detention Volume See Below 1/six months Calculation(s) 66 The runoff treatment ponds shall be capable of processing the 10-year, 24-hour rainfall event plus all accumulated silt without overflow of the standpipe. Not less than once each six months for the first year, permittee shall ascertain that available settling volume meets with this requirement and shall report this finding when submitting Discharge Monitoring Reports. Frequency during subsequent years shall be determined based on assessment of the information for the first year. 67 Permittee shall maintain or obtain records of rainfall representative of site conditions. All periods of rainfall which exceed the 10-year, 24-hour event or cause discharge from any overflow shall be reported to EPA. 68 (Note: No discharge from temporary ponds T1, T2 or T3 is permitted by this Authorization to Discharge. Any such discharge to Waters of the U.S. shall be reported in accordance with requirements of Part II.A.3.b. of the permit, except that the report shall be required within five days. Twice daily monitoring by grab sample with analyses to include TSS, pH and flow shall be required of any such discharge.) 69 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored once per week. 1, 4 70 There shall be no discharge of floating solids or visible foam in other than trace amounts. 71 Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location(s): points of discharge from treatment ponds A, B, C, D, E, and the quarry pond respectively, prior to mixing with any other waste stream. 3 72 5. CRBRP further agrees to immediately cease all construction activities, and to restore the plant site as described in Chapter 5.0 of the CRBRP Site Preparation Activities Report-June 1982 if the application for NPDES Permit No. TN0028801 is denied. 73 6. This agreement expires upon issuance of NPDES Permit No. TN0028801 or when site restoration under paragraph 5 is complete. Aug. 5, 1982 DATE 74 /s/ Howard D. Zeller HOWARD D. ZELLER Assistant Administrator for Policy 75 and Management 76 /s/ Percy Brewington, Jr. 77 PERCY BREWINGTON, JR. Acting Project Director Clinch River Breeder Reactor Plant Project