ML20088A560
| ML20088A560 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 03/28/1984 |
| From: | Public Service Enterprise Group |
| To: | |
| Shared Package | |
| ML20088A557 | List: |
| References | |
| NUDOCS 8404120212 | |
| Download: ML20088A560 (6) | |
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_ HOPE CREEK GENERATING STATION PREOPERATIONAL AND OPERATIONAL SALT DRIFT MONITORING PROGRAM j 1.1 GENERAL A monitoring program to evaluate the ef fects of a salt
- water, natural-draf t cooling tower on the environment will be conducted in the vicinity of the Hope Creek Generating Station. This monitoring program will satisfy requirements of the NRC Construction Permit granted to PSE&G for construction of the Hope Creek Generating Station.
The data collection program will identify all major vegetation types in the surrounding area; measure salt deposition from the cooling tower; and' determine the preoperational concentrations of salt in leaves of native trees surrounding Hope Creek Generating Station.
1.2 VEGETATION SURVEY 1.2.1 Survey Requirements A complete vegetation survey will be conducted in the vicinity of the Hope Creek Generating Station. This survey will be designed to iden-tify all major vegetation types and determine the acreage of each type for an evaluation of the possible ef fects of salt drif t. It will name the dominant native and agricultural species and identify the species found in the adjacent salt marshes. Aerial photography at an appropriate scale in combination with ground-l truthing will be used.
i 1.2.2 Survey Area and Schedule The vegetation survey will cover the Delaware River estuary area in the vicinity of Hope Creek-2 Generating Station. The area contained within a circle of 10 km radius centered over the cooling tower at the Hope Creek Generating Station will be included in the survey. This survey must be completed by sprirg of 1984 in order for preoperational monitoring to proceed.
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1.2.3 Vegetation Survey Report Requirements A report will be prepared within six weeks af ter completion of the survey. The report will include a cover map of the survey area and pro-vide a summary of the acreages of each vegeta-tion type. It will also include a description of the area's salt marshes and a discussion of salt tolerance in the species that are present.
In addition, the salt tolerance of upland and agricultural species will be discussed.
1.3 NATIVE VEGETATION STUDIES 1.3.1 Data Requirements A summer foliage sampling program will be con-ducted in the vicinity of Hope Creek Generating Station to determine preoperational concentra-tions of Na+ and Cl in native vegetation. A minimum of eight sampling locations will be selected where woody species are present. From each site, approximately 10 grams of leaf mate-rial will be collected from each of ten trees, on ce per month. These trees will be marked for future reference. Concentrations of Na+ and Cl-in washed leaf samples and in the water from the washings will be determined to an accuracy of parts-per-million through absorption spectropho-tometry and titration, respectively. Field col-lection and laboratory procedures will follow those used in the Chalk Point Power Plant studies.
1.3.2 Sampling Locations The sampling locations will be selected based on the availability of salt-sensitive woody species' material for long-term sampling , site accessibility, and the predicted salt deposi-tion areas and rates. Because the immed ia te area surrounding Hope Creek Generating Station is predominantly salt marsh, site accessibility and the availability of woody species will be a problem.
M P84 47/11-cag Based on the results of the vegetation survey described in Section 1.2, three or four common woody species will be selected for foliage sam-pling. The selected species will be salt sensi-tive or easily damaged by salt deposition. Tree spe cies, such as dogwood, will be chosen if available. Five sampling locations where some or all of these species occur will be selected east of the Hope Creek Generating Station.
. Ideally, these locations would be situated at approximately 0.5 km, 2 km, 4 km, 6 km, and 8 km dis tance from the cooling tower. Two similar sampling locations approximately 0.5 km and 2 km north northeast of the station will also be selected. One additional sampling location outside the study area will be chosen to act as an overall control. This location should be j'
approximately 20 miles inland and removed from natural background salt drif t blowing off the 4 Delaware Bay.
1.3.3 Sampling Schedule In order to obtain at least two full years of preoperational data, the foliage sampling pro-
! gram will begin in 1984. Leaf samples will be taken once a month during the growing season (May tg September) at each sampling location.
l The Na and Cl concentration in leaves is affected by precipitation, so foliage samples will not be taken during the first two or three days following rain and sampling will be com-pleted within a three day period.
1.4 SALT DEPOSITION STUDIES 1.4.1 Data Requirements Salt deposition studies will be conducted in the l vicinity of Hope Creek Generating Station to monitor-atmospheric salt loadings. The near-ground level deposition flux (kg/km 2/mo) will be measured using a' deposition sampler. The dust-fall collector used will be similar to Model 190, Research ' Appliance Company, Gibsonia, Pennsylvania and consist of a stand, dustfall jar, and bird ring.
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I Field collection and laboratory procedures to monitor atmospheric salt loadings will follow those used in the Crystal River Units 4 and 5 monitoring grogram. Samples will be analyzed l for Cl , Na , and soluble and insoluble dust-fall. By measuring both tne preoperational and operational atmospheric salt loadings, any significant increase in the salt deposition rate due to the Hope Creek Generating Station cooling tower can be estimated.
1.4.2 Sampling Locations A series of deposition sampling stations will be established in the vicinity of the Hope Creek Generating Station. These sampling stations will be located in close proximity to the native vegetation sampling cites. Five locations will be selected along a transect to the east of the cooling tower at distances of approximately 0.5 km, 2 km, 4 km, 6 km. and 8 km. Two more sam-pling locations will be chosen approximately 0.5 km and 2 km north northeast of the cooling tower. In addition, one replicate monitor will be placed at the 0.5 and 2 kilometer locations on the eastern transect to measure sampling variance.
To act as an overall control, a sample station consisting of one deposition monitor will also be established outside the salt deposition study area. The chosen location should be approxi-mately 20 miles inland and removed from the natural background salt drift blowing off the Delaware Bay.
1.4.3 Sampling Schedule In order for atmospheric salt monitoring to begin in the spring of 1984, all necessary equipment must be procured and the sampling locations selected as soon as possible.
Dustfall collectors can then be erected at the eight selected locations in early spring. After installation, collectors will be serviced year-round following a monthly schedule.
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f 1.5 PREOPERATIONAL REPORT REQUIREMENTS 1.5.1 Quarterly Reports Quarterly status reports will be prepared during preoperational monitoring. These reports will contain all basic data collected during that period, a summary of sampling activities, and a discussion of any problems encountered. During the growing season, these reports will include data from the native vegetation sampling; salt deposition data will be included in all reports. Quarterly reports will be submi'tted during the second week of the following quarter.
1.5.2 Annual Summaries Annual summary reports will be prepared within four weeks af ter the completion of all preopera-tional field and laboratory work on native vege-tation and atmospheric salt loading during each year. These reports will include all data col-lected during that year, a summary of results, and a discussion of any problems encountered.
1.5.3 Preoperational Summary Report At the end of preoperational monitoring, a sum-mary report compiling all years of data on salt concentration in native vegetation and atmos-pheric salt loading will be prepared. The summary report, to be prepared within six weeks of the completion of all preoperational monitor-ing will include:
(a) A summary of background concentrations of Na* and Cl in native vegetation.
(b) A discussion of differences between species and locations as related to background con-centrations of salt in leaves.
(c) The salt deposition (kg/km 2/mo) will be determined for each sampling location along with the sampling variance.
(d) The soluble and insoluble dustfall will be calculated along with sampling variances.
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1.6 OPERATIONAL REPORT REQUIREMENTS 1.6.1 Quarterly Reports Quarterly reports will be prepared during opera-tional monitoring. These reports will contain all basic data collected that period, a summary of sampling activities, and a discussion of any problems encountered. During the growing sea-son, the repcrts will include data from the native vegetation sampling; salt deposition data will be included in all reports. Quarterly reports will be prepared during the second week of the following quarter.
1.6.2 Annual Summary Reports An annual summary report will be prepared within four weeks af ter each complete year of operation at Hope Creek Generating Station. The annual operational reports will include results of the native vegetation and salt deposition studies.
Each of these reports will include all data col-lected during that year, a summary of results, and a discussion of any problems encountered.
1.6.3 Final Report Preoperational and operational reports will be combined into a final report summarizing all Hope Creek Generating Station cooling tower s tud ie s. This final report will contain the re-sults from at least two years of preoperational, one year of low-power testing, and two years of operational data. This report will be prepared within three months af ter the completion of operational monitoring and will include the following:
- 1. Discussion of salt deposition data.
- 2. Discussion of native vegetation studies.
- 3. Comparison of estimated salt drift and depo-sition with actual data.
- 4. Discussion of environmental ef fects of salt drift as related to salt sensitive species and the vegetation survey.
- 5. Pre-and post-operational data comparison.
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