ML20125B838

Const Effects Monitoring Program

ML20125B838
Person / Time
Site:	Hartsville
Issue date:	12/19/1979
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20125B835	List: ML20125B833 ML20125B838
References
NUDOCS 7912280613
Download: ML20125B838 (2)

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. 1 Hartsville Nuclear Plant NPDES Permit No. TN0027700 Construction Effects Monitoring Pregram The Construction Effects Monitoring Program for Hartsville Nuclear Plant is unchanged from the one described in the "Hartsville Nuclear Plants,  ;

Special Construction Effects Monitoring Study, Report for the Second {

Year of Constructicn, January 1979." The program is summari:cd below. l

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A. Primary Water Quality Monitoring Primary water quality surveys during the construction period are conducted on a quarterly basis and includes mid-channel sampling stations at Cumberland River miles (CRM) 292.6, 284.5, 282.0, and 27S.6. Analvsis l

of water samples includes, but is not limited to, the following parameters: I rH, temperature, dissolved exvgen, conductivity, alkalinity, coliforms (tota' and recall, aclids (suspended and dissolved), turbidity, nitrager.

(organic, ammonia. and nitrite plun nitrate), phosphorus (soluble and total), BCD, and an arrav of metals (see ER .\mendment 1. Table 2.5-U.

5. dpecial Ccnstruction Effs ts Menitorine Peripheral runcif monitorinc is eenducted it least monthlf at ecr n r':c -

tion zones and adjacent drainageways and streats. /Jditienui s' pin are collected during and/or irmediately fellewinn selected pried, of specified heavy rainfall (i.e., 0.3 inch or more per hour or 1.0 inch or more over a 24-heur peried). Itere samples are analyzed f ar parc-meters dirnetly affected by censtructicn activities and runcfr  :"n the construction areas (i.e., pH and total suspended solids). This aspect of constructicn monitering bepan trior to the start of ensite censtruction activity (preconstruction phase) and will centinue threughout the construction period (constructicn phase).

The specific tetal suspended solids concentratien criterien for determining the need for mitigation of erosion is two standard deviations gteater than the ccmbined mean total suspended solids concentration cbserved during the preconstruction peripheral monitor-ing program. This is 160 mg/l suspended solids. This criterion is not applicable wher. the rainfall exceeds the 10-year. 24-hour rainfall event.

Periodic revisiens to the samnling locations are made to reflect changes in the stage of constructicn activities which may resu:t in the initiatien or termination of runoff discharge at a particular  ;

sampline location. The present sampling locations are: '

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1. Corley Branch mile 0.03 (mouth of creek)

2. l Mouth of unnamed tributary at Cumberland River mile 383.52 (will receive discharge from Borrow Area No. 13 settling pond)

3. West Construction Holding Pond Discharge (sampled once per discharge) 4 East Construction Holding Pond Discharge (sampled ence per  !

discharge)

5. Mouth of Dixon Creek There have been no recent amendments to the above program by NRC.

Also, no additions to the program were necessitated by :he discharge from Sorrow Area No. 13, since the unnamed tributary at CRM 2S0.52, which receives this discharge, was aircady included in the program.

The only recent SRC amendments were in relation to the special dischar;:e diffuser construction monitoring plan fer mussels.

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