ML052150033
| ML052150033 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 07/22/2005 |
| From: | Eiford B Tennessee Valley Authority |
| To: | Polk E Office of Nuclear Reactor Regulation, State of TN, Dept of Environment & Conservation |
| References | |
| Download: ML052150033 (33) | |
Text
Tennessee Valley Authority. Post Office Box 2000. Spring City, Tennessee 37381-2000 July 22, 2005 Mr. Ed Polk, P.E., Manager Permit Section Tennessee Department of Environment and Conservation Division of Water Pollution Control 6th Floor, L&C Annex 401 Church Street Nashville, Tennessee 37243-1534
Dear Mr. Polk:
TENNESSEE VALLEY AUTHORITY (TVA) - WATTS BAR NUCLEAR PLANT (WBN) - NPDES PERMIT NO. TN0020168 - PHASE 11 316(b) RULE FOR EXISTING FACILITIES - PROPOSAL FOR INFORMATION COLLECTION FOR SUPPLEMENTAL CONDENSER COOLING WATER (SCCW) SYSTEM Pursuant to 40 CFR § 125.95(b)(1) of the Phase II rule for Cooling Water Intake Structures at Existing Facilities, TVA is submitting for your review this Proposal for Information Collection (PIC) for the SCCW at WBN. The rule, published in the Federal Register on July 9, 2004, requires the PIC to be submitted prior to start of information collection activities, but allows facilities to initiate such activities prior to receiving comment from the permitting agency. See 69 Fed. Reg. 41575,
- p. 41687, (July 9, 2004). The preamble to the rule encourages the Director of the permitting agency to provide comments expeditiously (i.e., within 60 days) so that the permit applicant can make responsive modifications to its information gathering activities. See 69 Fed. Reg. 41575, p. 41635, (July 9, 2004). Your expeditious review of the PIC is particularly important in view of an impending August 1, 2005, start date for impingement monitoring at WBN.
TVA plans to collect weekly impingement mortality samples for a minimum period of one year for the SCCW only. (A longer monitoring period may be utilized after assessing time constraints imposed by the rule for submitting the Comprehensive Demonstration Study (CDS), and after evaluating the costs of collecting additional data versus the greater uncertainties introduced by the absence of such data.) TVA does not intend to collect data for the intake pumping station that was placed in service at the time WBN went into operation because the flow at this intake is on a different water body and this flow is commensurate with 0C0\
Rol ce. eon*
hapan
closed cycle cooling. TVA WBN utilizes the SCCW to improve cooling tower performance.
The following sections address the requirements for the PIC as spelled out in the Phase II rule. Several of the items below refer to components of the CDS that are due at a future date. The preamble to the Phase II rule recognizes that collection and analysis of information is an iterative process and plans for information gathering may change as information is gathered and new data needs are identified. Accordingly, TVA will periodically review the PIC in light of new information as it becomes available and provide updates as necessary.
§125.95(b)(1)(i): A description of the proposed and/or implemented technologies, operational measures, and/or restoration measures to be evaluated in the [Comprehensive Demonstration] Study [to be provided later]:
TVA will assess the current impingement levels at WBN's Supplemental Condenser Cooling Water (SCCW) and determine the appropriate baseline in order to evaluate the status of compliance with EPA's national performance standards. The performance standards for impingement mortality (IM) require a reduction of 80-95% from the calculation baseline. Comparison of the current impingement mortality to the calculation baseline will provide an indication of the effectiveness of the following technologies and intake features already in use at WBN SCCW:
- Submerged plant intake SCCW at Watts Bar Dam to withdraw cold water at approximate Tennessee River Mile 530.
- Other site-specific characteristics that may reduce IM.
TVA will conduct preliminary evaluations of the following technologies for WBN as appropriate for compliance with the rule (impingement mortality only). It may be determined that the IM performance standard is already being met at WBN which would impact the technologies to be evaluated.
Impingement Mortality Standard Measures
- Restoration or protection
- Operational modifications (e.g., intake screen operational changes)
- Barrier nets or structures
- Fish handling and return systems
- Fish avoidance technology (e.g., louvers, sound, light, etc.)
- Replacement or modification of existing traveling screens
§125.95(b)(1)(ii): A list and description of any historical studies characterizing impingement mortality and entrainment and/or the physical and biological conditions in the vicinity of the cooling water intake structures and their relevance to this [Comprehensive Demonstration]
Study....:
The following reports describe historical levels of impingement, entrainment and biological conditions occurring at WBN SCCW. Since the SCCW draws water 2
from the old Watts Bar Steam Plant intake, historical reports pertaining to that intake are included.
Tennessee Valley Authority 1976. Impingement at Watts Bar Steam Plant. Norris, Tennessee; Division of Forestry, Fisheries and Wildlife Development. 10 pages.
Tennessee Valley Authority. 1976. Estimates of entrainment of fish eggs and larvae by Watts Bar Steam Plant, 1975, and assessment of the impact on the fisheries resource of Watts Bar Reservoir. Norris, Tennessee; Division of Forestry, Fisheries and Wildlife Development. 21 pages Tennessee Valley Authority. 1986b. Preoperational assessment of water quality and biological resources of Chickamauga Reservoir, Watts Bar Nuclear Plant, 1973-85. Knoxville, Tennessee; Division of Air and Water Resources. TVANONRED/WRF-87/1(a).
Tennessee Valley Authority. 1997. Watts Bar Nuclear Plant Supplemental Condenser Cooling Water Project, Draft Environmental Assessment. 53 pages.
Tennessee Valley Authority. 1998. Watts Bar Nuclear Plant Supplemental Condenser Cooling Water Project, Revised Draft Environmental Assessment. 89 pages.
Baxter, D.S., et al. 1998. Aquatic environmental conditions in the vicinity of Watts Bar Nuclear Plant during two years of operation, 1996-1997. 259 pages.
Baxter, D. S., K. D. Gardner and G. D. Hickman. 2001. Watts Bar Nuclear Plant Supplemental Condenser Cooling Water System Fish Monitoring Program. Tennessee Valley Authority, Water Management, Norris, Tennessee. 33 pages.
Baxter, D. S. and D. L. Lowery. 2005. Biological Monitoring of the Tennessee River Near Watts Bar Nuclear Plant Discharge, 2004. Tennessee Valley Authority, River System Operations and Environment, Knoxville, Tennessee. 32pages.
§125.95(b)(1)(ii): ... If you propose to use existing data, you must demonstrate the extent to which the data are representative of current conditions and that the data were collected using appropriate quality assurance/quality control procedures; 3
TVA will be evaluating data collected in accordance with this PIC and comparing the results with previously collected data to ascertain if historic data are still representative of current levels of impingement. TVA is assessing historic data and records to verify that data were collected in accordance with a valid Quality Assurance Procedure for impingement mortality; it is believed that is the case.
Additional information may be provided later, as appropriate, in support of using historic data.
§125.95(b)(1)(iii): A summary of any past or ongoing consultations with appropriate Federal, State, and Tribal fish and wildlife agencies that are relevant to this [Comprehensive Demonstration] Study and a copy of written comments received as a result of such consultations During review of TVA's Environmental Assessment for the SCCW, Tennessee Wildlife Resources Agency personnel requested additional biological monitoring in the area of the SCCW to assess 316(b) impacts. This request for additional monitoring was ultimately included in the revised NPDES permit for the SCCW discharge.
§125.95(b)(1)(iv): A sampling plan for any new field studies you propose to conduct in order to ensure that you have sufficient data to develop a scientifically valid estimate of impingement mortality and entrainment at your site. The sampling plan must document all methods and quality assurancelquality control procedures for sampling and data analysis.
Proposed methods must be appropriate for a quantitative survey including consideration of methods used in other studies performed in the source water body. The sampling plan must include a description of the study area including the area of influence of the cooling water intake structure(s),
and provide a taxonomic identification of the sampled biological assemblages (including all life stages of fish and shellfish).
Plant Description Watts Bar Nuclear Plant (WBN) is located on the west bank of upper Chickamauga Reservoir near Tennessee River Mile (TRM) 528. This one-unit nuclear generating plant is designed for an electrical output of about 1270 megawatts (MW). WBN is situated approximately two miles downstream of Watts Bar Dam (WBH) (TRM 529.9) and one mile downstream of the four-unit Watts Bar Fossil Plant (WBF) that is not currently generating that is also on the west bank of Chickamauga Reservoir (TRM 529).
WBN went into commercial operation on May 27,1996. The plant uses one of the two cooling towers for heat dissipation. Blow-down from the cooling tower is discharged through multi-port diffusers located in the main river channel at TRM 527.8. Makeup water and other water supply requirements are obtained from an intake channel and pumping station at TRM 528.
Supplemental Condenser Coolinq Water (SCCW) System Description The installation of the WBN SCCW system was completed and became operational in July 1999. The SCCW is designed to provide between 115,000 and 135,000 gallons of water per minute (gpm) from Watts Bar Reservoir to 4
WBN, depending on the pool elevation, to supplement the cooling capacity of the existing cooling tower.
Water from the reservoir flows through the WBF intake screen house that is adjacent to the west upstream side of Watts Bar Dam. The water for the SCCW enters the screen house through three intake sluice gates with bottoms at elevation 710, fitted with trash racks and traveling water screens. The gates tend to act as water skimmers since the tops of the sluice gates are at elevation 718 feet and the normal summer headwater is at elevation 740.5. The trash racks have bars to prevent the entry of large debris. These are 5 inches wide by 3/8 inches thick and spaced 3 inches apart on centers. The intakes also have traveling screens that utilize a 3/8 inch screen mesh.
The water flows approximately 3,200 feet to the fossil plant through two 78-inch diameter concrete pipes. A new 90-inch diameter reinforced concrete pipe was tied into the existing 78-inch pipes and traverses the northeast portion of the WBN site to a new inlet structure at the Unit 2 cooling tower. A motor operated valve, located in the pipeline, is utilized to stop the flow to the tower basin whenever cooling tower blow-down is suspended during periodic chemical treatment of the Condenser Cooling Water (CCW).
The SCCW is conveyed through the Unit 2 tower basin to the Unit 1 tower discharge flume. Here it mixes with the warmer cold water from the Unit 1 tower prior to being pumped to the inlet of the Unit 1 main condenser.
To maintain the level and volume of the CCW system and to take advantage of the cooling effect provided by the SCCW, warm water is discharged at the same flow rate as the supplemental supply. To accomplish this, an overflow weir structure is provided on the side of the Unit 1 cooling tower basin. A 60 to 72-inch diameter reinforced pipe conveys the discharge flow by gravity from the tower to the former WBF discharge canal. Water from the SCCW system is discharged through the old WBF discharge structure located on the Tennessee River approximately 1.1 miles upstream of the nuclear plant intake.
Impingement Sampling Methods Samples will be collected according to TVA's Quality Assurance Procedure (NR OPS-FO-OBR-23.1 1) for Impingement Counts (TVA 1983a or later). A copy of this procedure is enclosed. Weekly counts of fish impinged during a 24-hour period on the SCCW intake traveling screens at WBN will be collected beginning in August 2005 and continue for at least one year. Prior to conducting the sampling, Operations personnel will be notified in time to ensure that all available traveling screens for units in operation are washed 24-hours prior to the scheduled sampling event. These washings, occurring 24-hours in advance of the sampling, will be conducted concurrently if possible. At the time of the scheduled sample collection, available screens will be rotated and back-washed individually or in groups. During periods of heavy debris load, it may become necessary for Operations personnel to wash more frequently than once per 24-hours; if this proves to be true, daily counts of fish impinged will be adjusted to account for the actual time between screen backwash operations.
5
After each available screen (or groups of available screens) is washed, all fish (and debris) will be removed from the collection basket or nets. The zone of influence for impingement monitoring is being defined in front of and at the intake structure.
Fish will be sorted by species in 25-mm total length (TL) groups, then counted, weighed and recorded. Any fish that cannot be positively field-identified will be preserved in 10% formalin and taken to the TVA Aquatic Biology Laboratory, 2547 Walnut Orchard in Norris, Tennessee, for identification or verification.
At times when it is determined that a complete count of all fish impinged during the sample cannot be made during the working day with the available field personnel, the crew leader may elect transport the specimens to the lab or other suitable location to process, or may subsample as described below:
- All fish of a species over 300-mm TL will be sorted into size classes, weighed and recorded.
- Only size classes containing large numbers of individuals will be subsampled by mixing them and scooping approximately 2.5 kg as a subsample from the pile.
- Fish from the subsample will then be separated into length classes and the number and weight for each size class recorded.
- All remaining fish from which the subsample was taken are then weighed and that total weight recorded.
Moribund/Dead Fish Fish collected from a 24-hour screen wash will usually all be dead when processed. Incidental numbers of fish which appear to have been dead for more than 24-hours will not be included in the sample. Determinations of previously dead fish will be made using Best Professional Judgment based on observations of condition of fish.
Also, during winter, species of fish such as shad occasionally suffer die-offs and could be impinged after death or in a moribund state. In that case, field personnel would document that due to ambient temperatures, either all, or a portion of impinged species of fish were due to cold-shock and would not have been impinged otherwise. Additionally, if species of fish were observed dying in the reservoir from cold-shock, this would be documented and presented in the records and report to indicate cold-shock as the primary cause of unusually high impingement of this species.
Records and Recordkeeninp Data collection forms will be completed with the counts and weights of species.
These forms will include the date, time, facility name and location of the sample (i.e., at intake screen backwash), and the person collecting data.
For quality control and assurance, voucher specimens will be sent to the TVA Aquatic Biology Laboratory for verification. Completed data forms will be submitted to the project leader for technical review and signoff. Once the data have been verified and the project leader has signed the forms, copies of all forms will be provided to Site Environmental. Site Environmental may replace 6
the draft form with the signed official record. Records will be maintained on site per requirements of TVA's Environmental Records Management Process (currently 10 years). Data will then be entered by TVA's Resource Stewardship into the TVA Dazzler database (or equivalent) for subsequent analysis and reporting. In addition, during the sample year, a minimum of two sampling audits will be conducted to ensure proper standard procedures are followed.
A list of species identified from historical impingement monitoring at WBN is in Tables 1 and 2 below.
7
Table 1. Total Number of Each Species Impinged on the Intake Screens of Watts Bar Steam Plant in 33 Samples Collected between August 8, 1974, and May 29, 1975.
Scientific Name Common Name Total Number Alosa chrysochloris Skipjack herring 187 Dorosoma cepediamun Gizzard shad 36 D. petenense Threadfin shad 1,333 Hiodon tergisus Mooneye 13 Notropis antherinoides Emerald shiner 1 N. whipplei Steelcolor shiner 3 Pimephales vigilax Bullhead minnow 1 Ictiobus bubalus Smallmouth buffalo 1 Ictalurus furcatus Blue catfish 8 1.punctatus Channel catfish 17 Pylodictis olivaris Flathead catfish 3 Morone chrysops White bass 25 M. mississippiensis Yellow bass 1 M. saxitilis Striped bass 1 Lepomis macrochirus Bluegill 235 Micropterus dolomieui Smallmouth bass 5 Pomoxis annularis White crappie 19 Apoldinotus grunniens Freshwater drum 232 Percina caprodes Logperch 9 Total 2,130 8
Table 2. Total and estimated numbers of fish impinged at Watts Bar Nuclear Plant SCCW intake during two sample periods, August 31, 1999 through September 29,1999 and March 7, 2000 through April 26, 2000.
ScientificName - Common Total.Number : Estimated Annual
....... Naeof F..is mp..ged.m mepi..ef F Alosa chrysochloris Skipjack herring 1 36.5 Dorosoma cepediamun Gizzard shad 147* 5365.5 D.petenense Threadfin shad 40* 1460 Cyprinella sp. Unidentified 1 36.5 Cyprinella sp.*
Notropis sp. Unidentified 3 109.5 Notropis sp.*
Ictalurus punctatus Channel catfish 4 146 M. mississippiensis Yellow bass 1 36.5 M. saxitilis Striped bass 2 73 Lepomis macrochirus Bluegill 44 1606 Apoldinotus grunniens Freshwater drum 7 255.5
_:;: _ . Total 250 9125
- Minnows that were moribund-on-arrival and too decomposed to identify to species.
Extrapolation of Impingement Losses to Equivalent Adult and Production Foregone.
To facilitate the implementation of and compliance with EPA's regulations for Section 316(b) of the Clean Water Act (Federal Register Vol. 69, No. 131; July 9, 2004), impingement losses of juvenile and adult stages of fish will be evaluated by extrapolating the losses to equivalent reductions of adult fish, or of biomass production available to predators. EPRI (formerly the Electric Power Research Institute) has identified two models for extrapolating losses of juvenile and adult stages at intake structures to numbers or production of older fish. Equivalent Adult (EA) models quantify impingement losses in terms of the number of fish that would have survived to a given future age. Production Foregone (PF) models are applied to forage fish species and quantify the loss from impingement in terms of potential available forage for consumption by predators.
Requirements of the models are site-specific data on the distribution and abundance of fish populations vulnerable to impingement. TVA will be using these models to determine the "biological liability" of the intake structure.
TVA sincerely appreciates your expeditious review of this PIC so that your comments may be appropriately incorporated into the impingement sampling methods.
9
If you need additional information, or would like to schedule a meeting to discuss this document please contact me at (423) 365-3364.
Sincerely, Betsy ord-Lee Chemistry/Environmental Support Manager Watts Bar Nuclear Plant Enclosure cc (Enclosure):
Dr. Richard Urban, PhD Chattanooga Environmental Assistance Center Division of Water Pollution Control State Office Building, Suite 550 540 McCallie Avenue Chattanooga, Tennessee 37402-2013 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 cc(w/o Enclosure):
L. P. Johnson, LP 5D-C D. E. Pittman, BR 4T-C J. W. Shipp Jr., MR 2T-C J. F. Tortora, ADMIN 1V-WBN B. B. Walton, ET 11 A-K J. R. Wright, WT 9B-K EDM, WT CA-K 10
I Copy No. __
TENNESSEE VALLEY AUTHORITY NATURAL RESOURCE OPERATIONS FIELD) OP'ERATIONS QUALITY ASSURANCE PROCEDURE No. NR OP'S-FO-BR-23. l1 -_- Rev. °
Title:
JIMPTI:GM MT. COUNI. ___S Revision: RI0 RI R2 R3 . R4 Date: 1/31183
.urt'd..b) .. _ C. 'M. Alexander Z- _"'.- i.-
Prpprn rpri hy Recobmiiended by:
Stuiv. BR, __ . A.Y Technical Reviewer:
Concurred hy:
OAC, FO Ap)1rovtdl by: X I Approved by: Zcee, Jinagr ,.'WIES Concurred by: . _ ___
Chief. FAEB, A&WR B._B. Carroll ._ ._
Concurred by: * -
.Chief, DSR &fEb ~bt___ . ___ ...... ____
___ I TVA 30025 (N ROPS -8U)
NlR 0I'S-F(-
Title:
]tIPINGEflENT CoUNJ'S No. 1iU-.)? 11 Rev. n 1.0 OBJECTiVE To presteribe Lthe standard method used ly Field Operations (F0) for determining tve nuuiber of fish impinged on traveling screens in the intakes of TVA steam-ejectric plants. A schematic diagram of a typical intake system is shown in a;L t einciatn 1 . ThIne nimet iod i nvy l ves periodically wasiing the screens, with any t i sh impiniiged beliizg ideilLiLfitd, counted, weigined, and measured. These data arl'e rovido l.. lito Iii viision of Air and WaLer Ntesources, which prepares reports on plant imuingeient. rates for EPA review.
2.( SCM(:PE1 Thn is procedure applies lo inpi nagement. countIS at al.l steam-electric plants, Witil Iinor vr ialjuions necessary to accomitotlatL.e itidividual plant design seatures. 'I'lhe unit superv:isor must Lailor tie procedures for the planit tu he sanmpiled. Imnpijigement rates can be est imatted through extrapolation of imtpingement counts provided a large nimbinher of counts are takein over a period ol time suffiviitnit to reflectL short-ter vzriaLionis ia ninnibers ol fish Va1 il lipi nged.
3.0 REFERENCES
None 4.0 ABBREVIATIONS ANt) DEFINITIONS 4.1 DSII--IIat-a Services Branch 4.2 FO--Field 01perations 4.3 TI.--ota.l length 5.0 RESPONSIBIILITIES 5.1 The Sitpervisor, biological Resources, is responsible for coordinating with
(-I ient or'galnlia.;t ionus aind assigining specifi c pru.tIcts Lo inniL supervisors.
5.2 The unit supervisor is responsible for developing a workplan defining the sampling program, overall scheduling of Lhe work, and the technical adequacy of tlhe work. The unit supervisor selects thne crew leader.
5.3 The crew leader is responsible for supervising fieldwork, daily coordination of activities with plant personnel, assuring that all applicable procedures are followed, reviewing data for accuracy and completeness, and reporting problems to Oile unit supervisor.
5.4 FO employees involved in impingement counts are responsible for performing work iu atcodalnce with Lhis procedure and all other applicable procedures, keupitig pr-oper records, and reporting problems to the crew leader.
TVA 17140 (DOH&S-2-80) Page 1 of 6 Date 1/31/8.3
NR OPS-FO-
Title:
IMPINGEMIENTIouJNrI's No.1-ag12. Rev. n 5.5 The plailt Mianager or shilt engineer is responsible for assuring that all screens are slimul:taneously washed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to the impingement count.
6.0 PIOCEI)tJRE/fEQUl] Jlt1ENTS 6.1iL ti lhllt Atpl S IpjL) ies.
6.1.1 Pl atlfuoir sca.le, 1100-g cazpaciLy, I-g incremenits 6.1.2 Blanginug scale, I 0-k. capac ity, 2 -g illcrenuelx(s 6.1.3 Fish sorting table with 25-nmm incremeuuLs marked 6.1.4 Two hanid tubs 6.1.5 four wash tilbs, numiuber 4 6.1.6 Two dip nets 6.1.7 Formnalil (1 J.)
6.1.8 One-gallon sample jars and Jabels (stick-on ouLside labels and waterproof iriterinal labels) 6.1.9 Subsample scoop 6.2 Preparqti on 6.2.1 Prior to the counft the plant manager or shift engineer shall be notified of the impeniding count; adequate Lime shall be given such that all screens are simultaneously washed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to the count.
6.2.2 Before leaving ior Lhe field, check to see that all equipment is packed and operating properly. The number of fish expected will determine the size of the field crew and the quantities of each of the items listed in section 6.1.
6.2.3 Enter preliminary information for each screen on Impingement Data Forms (form TVA 2(J006, attachments 2 and 3) such as plant identification and name, test date, screen number, and screen identification.
6.2.4 Upon arrival at the plant the crew leader shall make necessary contacts with, planit security and then with the shift engineer to coordinate screen washings.
6.2.5 The crew leader shall discuss screen wash procedures and wash sequence with the pump station operator.
TVA 17140 (DOH&S-2-80) Page 2 of 6 Date 1/31/83
NlR OPS-FO-
Title:
IIMPINCEMENI COUNIS No.BI?-23.1'I Rev. 0 6.3 Procedure 6.3.1 Standard procedure shall he for screens which lhave been operational during the previous 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> Lo he either rotated individually or in groups (usually in pairs but not more than three screens except when excessive pressure differential develops across the screens and they must all be washed simultaneously). Screens shall be washed as directed below.
6.3.1.1 Proceed to catch basket.
6.3.1.2 Signal operator to initiate washing of the first. screen. Wash thle screen for one complete rotation or turn (usually about 10 minutes).
6.3.1.3 Remove fish from basket and close gate. Record time of washing onl front of thle data form.
6.3.1.4 Signal operator to wash second screen.
6.3.1.5 Place fish from first screen onl sorting table and begin processing.
6.3.1.6 When second screen is washed, remove fish from basket, close gate, record time of washing, and signal operator to wash third screen.
6.3.1.7 Continue sequenice until all screens are washed.
6.4 Field Processing 6.4.] SortL eacl species into 25-nnlm total length (IL) classes. Record the common name (if not. a]lready entered ozl form) and tile number in each length class by species on the front of the data form (attachment 2).
6.4.2 tleasure tlhe weight of all fish iii each length class using a platform scale, weighing t.o tile nearest g. Record tlhe tot.al weight, in g, o1 Lthe front of th datLa torim. The minimum weight. of any length class shall be I g. Do not ent.er "Lrace.1" 6.4.3 Whun it has been deLeriiiinled that a complete counL of all imipinged fish cannot be made during the working day with the available manpower, the crew leader way elect to subsaumple as direcLed below.
6.4.3.1 Remove all individuals of a species over 300-mm 1I., separate into appropriate size classes, arid record on the front side of the data form the total number and weight (irn g) of fish for each size class.
6.4.3.2 Subsample all remaining individuals of the species or conduct a direct count of one or more of Lthe remaining size classes before subsampling. For example, if there are a large number of 51- Lo 75-nmm (3-inch) and 76- to 100-nui (4-inich) threadfin shad, but only a few 101- to 125-nim (5-inch) and 126- to 150-mm (6-inch) threadfin shad, process all of the larger fish and record thle data on the front side of thle data form. Subsample thle remaining threadfini as directed below.
TVA 17140 (DOH&S-2-80) Page 3 of 6 Date 1/31/83
NH Ol'S-FO-
Title:
IMPINGEIMENT COUNTS No.BR-23.I1 Rev. 0 6.4.3.3 Record all stubsampling data o1 Lthe back of the data form (attacmunent 3).
6.4.3.4 Place tLhe fish to be subsampled on the sorting table. If the fish have been size classed, mix them sufficiently to create a random distribution.
6.4.3.5 Scoop approximatlely 2.5 kg ol fish Ollt of the pile.
6.4.3.6 Separate tlhe lislh iin this subsample into 25-iwii leugLlh classes and record the nuiiitier and *otal weight for each size class.
6.4.3.7 Weigh: the remailLillg fish from which Lhe subsample was taken and record the weight(s) in Hlie cells ialbeled "Remaining Sample Weights" on the back of the data lLrmu. Often thile remaining fish will f111 several hand tubs. In such a case, enter individual weights of each hand tub full (minus the tub weight) in the cells vath.er Lthan adding them together and entering the total of all Lubs; each weight must 1lot exceed five digits.
6.4.4 Separate allI fish thaL cannot be field identified], place them in gallon
- jars. Add Il pier-cent fur-malin in to preserve the fish and take thien to the Fislheies Laboratory iii Norris for identification or verification.
6.4.5 I.abLel each jar (insid(I andtl outs.i de) witIh methodi of collectioui ( impiniglement),
locality (p lant, State, county), date, and crew meiiibers.
6.4.6 After the impingement count is completed, deposit the impinged fish in a sanitary landfill or dispose of them with the screen wash water.
6.4.7 Check out of thie plaLt.
6.5 Quality Control 6.5.1 All fish of questionable identity shall be preserved and taken or sent to the Fisheries Laboratory in Norris for identification.
6.6 Recording Data 6.6.1 The crew leader shall complete, sign, and date the data forms, including tile date and timle tile screens were last washed (informaLion obtained from plant personnel ).
6.7 Packing and Shipping Samples 6.7.1 Pack the samp]e jars in shipping boxes provided by the Fisheries Laboratory in Norris, Tennessee.
6.7.2 Prepare a Transport Invoice (form 23015, attachment 4) and ship the boxes (incluiding copy of field forms) through a TVA Office Service Warehouse to tile Fisheries Laboratory, Norris, Tennessee.
6.7.3 Time and place arrangements should be made by phone with Fisheries Laboratory personnel for receiving samples.
TVA 17140 (DOH&S2-80) Page 4 of 6 Date 1/31/83
NiR OPS-FO-
Title:
ItMPINGEMiENT COUJNT'S No.BR-23. 11 Rev. ()
7.O RECOI)S 7.1 Comiplet-ed data forms are sulbm itted Lip Lle uniLI supervisor for technical review and signoff.
7.2 Tbe origiinal forms are senl Lo 1)SI for data processing.
7.3 After data processing is complete, DSB sends the forms to M1apping Services Branch for microfilming. The microfilm (two copies) and the forms are returned Lo 1SB1 for verification.
7.4 The miicrofi~ln is permanenlly sLored by DSB and, after microfilm verification, the forms are reLained hy DS} for one year antd Lhen destroyed.
TVA 17140 (DOH&S-2-80) Page 5 of 6 Date 1/31/83
ATTACIRlENTS
- 1. Schematic Diagramti of a Typical Steam-Electric Intake System
- 2. Impingement Data Form (form TVA 20006)
- 3. TransjorL Invoire I-VA 17140 (DOH&S-2-80) Page 6 of 6 Ddte 1/31/83
NR OI'S-E'O-
Title:
IMPINGEMENT COUNTS No. BR-Z2L j Rev. Q ATTACtlMENT 1 SCHEMATIC DIAGRAM OF A TYPICAL STEAM-ELECTRIC INTAKE SYSTEM k( ( C PL.ANT WASEI' t flTA1:E SCRMzr: IIDENT. B 4A 3P 3A 2l' 2A 31' 11C-FF.E'-S IA SCRUN1E?0~. 7 6 5 2 l, ,
5 5
i -I \
FLAwr runri niv 3TATI ON LI I 0000] L x
( 2 Or, ~! 7.!:
WX111 !ASVIT KAf1 MM=UI II' '.!I COURf,711011 :A, K TVA 17140 (DOH&S-2-80) Page I of 1 Date 1/31/83
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-I ATTACHMENT 2 F 0
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- a. I ATTACHMENT 3 TRANSPORT INVOICE THtAtM:M(UT' ltNVOWYt SITE ICXED IN l)ulI ___ _
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I-TVA 17140 (DOH&S-2-80) Page i of I Date 1/31/83
i Copy No. __
- TENNESSEE VALLEY AUTHORITY NATURAL RESOURCE OPERATIONS FIELD) P1'ERATIONS QUALITY ASSURANCE PROCEDURE No. NR OIS-FO-B11-23.1 l___ Iiev.0
Title:
IMPT I2EMT. COfUN S Revision: _ R0 R1_ R2 R3 __ 4-Date: 1/31/83 2uaxed .. y. .' ______ C:.M. Alexander _____
Recobinnended by: - _____V Con c, Brr 10: __ s-.__
TecArnica Reviewer: _i J/
Concurred by:
OAC. FO - - :rffn G_. Y4_............__...__..___ ...
_bnin~r 1'x p'A< .7~ . is. __.. _ .
Approvef by: arl Concurred by:
Chvief. FAE, A&WR -ir'ol_ B. B.
Concurred lby:; e Ch-!(f, nTiR _£ t'i or __ __ _ ._r_ _
TVA 30025 (NROPS 8-BI)
Title:
- HtPINGEtIENT CoUNTS I No. .iijjj201'S-F(-
NK iz Rev. Q 1.0 (13.ECTIVE 1o prestcribe Lite standard method used by Field Operations (FO) for determining thlfe ntuiber of tish impinged on traveling screens in the intakes of TVA steam-electric pxlants. A schematic diagram of a typical intake system is shown in aLlamzent 1. Thme etihod involves pleriodically washing the screens, with any fish finpi iiged beiiig .idenLified, counted, weighed, and meastired. These data arre provided Lo Hiti Iivision of Air aild Water Utesources, whichi prepares repIorts on plant imipingement rates for EPA review.
2 .1 _ S(:OI'I.
Tit is lorocct lL e app lies L.u impi llgement. vzouints aLt al. steamii-electric plants, WiLbi Iilltol vjriaLions necessary to a(commodlat.c individual plant design IeaLtiresL. lThle Ulli t supervisor must tailor the! procedures for the plant tu he samlpltled. Impingecment raLes can be estimated through extrapolation of impinilgeLJIeL t'couzts provided a large numLIIber ol counts are takeni over a period ol time sutffivitent to refltecL short-tecrij varia Lions in nuimbers of fish imp i niged.
3.0 REFERENCES
Nonje 4.0 ABBREVIATIONS ANI) DEFiNITIONS 4.1 DSM--l1at.a Services Branch 4.2 FO--Field Operat.ions 4.3 TI.--ToLa.l length 5.0 RESPONS 1131LITIES 5.1 The Suipervisojr, Biological Resources, is respousible for coordinating with clieiel o0rilili zaLtiols and assiguitig specilic pro jects to iiniL suloervisors.
5.2 The unit supervisor is responsible for developing a workplan defining the sampling program, overall scheduling of the work, and the technical adequacy of the work. The unit supervisor selects the crew leader.
5.3 The crew leader is responsible for supervising fieldwork, daily coordination of activities with plant personnel, assuring that. all applicable procedures are followed, reviewing data for accuracy and completeness, and reporting problems to tHe unit supervisor.
5.4 FO employees involved in impingement counts are responsible for performing work in accordancLe with this procedure and all othler applicable procedures, ket~phiizg prolivzi records, and reporting problems to the crew leader.
TVA 17140 (DOH&S-2-80) Page 1 of 6 Date 1/31/83
NR OPS-FO- l
Title:
111PINGELM1EW ('C)lJNTS No.13R. 1j l Rev. n 5.5 The plant manager or shift engineer is responsib]e for assuring that all screens are simultaneously washed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to the impingement count.
6.0 MIROC.IMM/MREQU lREMlENTS
- 6. I lX1!4puct - And S1iapp ies 6.1. 1 P1latforim st;a.les 800-g vapacitL~y, 1-g inCreUents 6.1 .2 liniugiog s-cu Ie, 11)-kg capacity, 2-g i iicrelieil.s 6.1.3 Fish sorting able wit-it 25-nimm incremeniLs anarked 6.1.4 Two haid Ltubs 6.1.5 Four washl tLtubs, HuMber 4 6.1.6 Two diji nets 6.1.7 Fonnil in ( IJ.)
6.1.8 One-gallon sample jars antd labels (stic-on ouLsidte Jabels and wat.erproof internal labels) 6.i.9 Subsample scoop 6.2 Preparqtion 6.2.1 Prior to the counL the plant manager or shi-ft engineer shall be notified of the impending count; adequate time shall be given such that all screens are simultaneously washed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to the count.
6.2.2 Before leaving for Lhe field, check to see thaL all equipment is packed and operating properly. The number of fish expected will determine the size of the field crew and the quantities of each of the items listed in section 6.1.
6.2.3 Enter 1)reliminary information for each screen on Impingement Data Forms (form TVA 20006, attachments 2 and 3) such as plant identification and namne, test date, screen number, and screen identification.
6.2.4 Upon arrival at the plant the crew leader shall make necessary contacts with Jlazmt security and then with the shift engineer to coordinate screen was-hi nIgs.
6.2.5 The crvw leader shall discuss screen wash procedures and wash sequence with the putmp stution operator.
TVA 17140 (DOH&S-2-80) Page 2 of 6 Date 1/31/83
Nt ()IS-FO-
Title:
IMPINGEMEN' COUN'I'S No.BR?-23. 11 Rev. 0 6.3 Procedure 6.3.1 Standard procedure shall he for screens which hIave been operational during the 'previous 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to he either roLated individually or in groups (usually in pairs but not more than three screens except when excessive pressure differential develops across the screens and Lhey must all be washed simultaneously). Screens shall be washed as directed below.
6.3.1.1 Proceed to catch basket.
6.3.1.2 Signal operator to initiate washing of the first screen. Wash the screen for one complete rotation or turn (usually about 10 minutes).
6.3.1.3 Remove fish from basket and close gate. Record time of washing on front of the data form.
6.3.1.4 Signal operator to wash second screen.
6.3.1.5 Place fish from first screen on sorting table and begin processing.
6.3.1.6 Whein second screen is washed, remove fish from basket, close gate, record time of washing, and signal operator to wash third screen.
6.3.1.7 Continue sequence until all screens are washed.
6.4 1ield Processing 6.4.1 Sort c;;cl species ilito 25-mam total lengtlh ('l') classes. Record the common name (if inot. already entered oik form) and the number in each length class by s)ecies on the front of the data form (attachment 2).
6.4.2 Mleasure Lhe weight of all fish in each length class using a platform scale, weighing L.o the nearest g. IRecord the Lotal weight, in g, on the front of the 41alatormi. The minimum weight. of any length class shall be I g. Do not enter "Lrace."
6.4.3 Wlitnt i I tas teenL (h+/-LenrmiiIed (fiat a coniijleLe count of all impinged fish cannot he made during the working day with the available manpower, the crew leader mtay elect to subsaumple as direcLed below.
6.4.3.1 Remove all individuals of a species over 300-mm TI., separate into appropriate size classes, anid record on the front side of the data form the total number and weight (ira g) of fish for each size class.
6.4.3.2 Subsample all remaining individuals of Lhe species or conduct a direct couiit of one or more of tlhe remaining size classes before subsamplirig. For example, if there are a large number of 51- Lo 75-mni (3-inch) and 76- to 100-nmm (4-inch) threadfin shad, but only a few 101- to 125-nun (5-inch) and 126- to 150-mmit (6-inch) tlhreadfin shad, process all of the larger fish and record the data on Lhe front side of the data form. Subsamplr e Lhe remaining threadfin as directed bJelow.
TVA 17140 (DOH&S-2-80) Page 3 of 6 Date 1/31/83
NH Ol'S-FO-
Title:
IMPINGE!JENT COUNTS No.BR-23.11 Rev. 0 6.4.3.3 Record all stibsampling data on the back of the data form (attachment 3).
6.4.3.4 Place the fish to be subsampled on tile sorting table. If the fish have been size classed, mix tlhem sufficiently to create a random distribution.
6.4.3.5 Scoop1 atplproxinit3Le]y 2.5 kg ol fish out of the pile.
6.4.3.6 Separate the lish in this subsample ;.IILO 25-aaama lengthl classes and record the Ilulilber andt total weight for each size class.
6.4.3.7 Weight Ile remailting fish from which tile subsample was taken and record the weight.(s) in titi- cells Juaeledi "Remaiining Sample Weigllts" oil the back of the data form. Olftellj(lie remaining fish will fill several lhand tubs. III such a case, enter individual weights of each lhand tub full (minus the tub weight) in the tells rather Lthazi adding them together and entering thle total of all Lubs; each weight maust not, exceed five digits.
6.4.4 Separate all fish that cannitot be field identified, place theiii in gallon jars. Add I() 1 percent iformalin in to preserve thle fish and take thllei to tile Fisheries J.Laboratory in Norris for identification or verificatiolL.
6.4.5 Label each jar ( iJsidie alit] outside) witIh method of collecti on (impingenment),
locality (planit, State, county), date, and crew members.
6.4.6 After tlie impingement count is completed, deposit the impinged fish nll a sanitary landfill or dispose of them with the screen wash water.
6.4.7 Check out of tlhe plaut.
6.5 Quality Control 6.5.1 All fish of questionable identity shall be preserved and taken or sent to the Fisheries Laboratory in Norris for identification.
6.6 Recording Ddta 6.6.1 The crew leader shalkal complete, u sign, and date tile data forms, including thle date and time the screens were last washed (information obtained from plant personne] ).
6.7 Packing and Shipping Samples 6.7.1 Pack tile sample jars in shipping boxes provided by the Fisheries Laboratory in Norris, Tennessee.
6.7.2 Prepare a Transport Invoice (form 23015, attachment 4) and ship'the boxes (including copy of field forms) through a TVA Office Service Warehouse to thle I'ishieries Laburatory, Norris, Tennessee.
6.7.3 Time and place arrangements should be made by phone with Fisheries Laboratory personnel for receiving samples.
TVA 17140 (DOH&S2-80) Page 4 of 6 Date 1/31/83
NR OPS-FO-
Title:
IMPINGENE:NT COUNITS No.3R-23i.11 Rev.,
7.0 RECOII)S 7.1 CompSleLed data fornms are submitLed Lo the uniL surervisor for technical review and signoff.
7.2 The original forms are sent Lo 1)SB3 for dtLa pirocessillg.
7.3 After data processing is comnp]ete, DSB sends the forms to Mlapping Services Branch for microl ilmning. The microfilb (two copies) arid Lhe forms are returned Lo DSB for verification.
7.4 The microfilm is permanently stored by DSB and, after microfilm verification, the forms are ret.ained by DSIH for one year and then destroyed.
TVA 17140 (DOH&S-2-80) Page 5 of 6 Date 1/31/83
NIR OPS-FO-
Title:
IMIPINCEtiENT COUNTS No.BR-23. 11 Rev. 0 A'1'AClRIENMTS I 1. Schematic Diagram of a Typical Steam-Electric Intake System
- 2. Iiipingemeiut Data Form (form IVA 20006)
- 3. Transport llvoicee TVA 17140 (DOH&S-2-80) Page 6 of 6 Ddte 1/31/83
NR Ol'S-Fo-
Title:
IMPINGEMENT COUNTS No. BR-232. 11 Rev. 0 ATTACHIIMNT 1 SCHEMATIC DIAGRAM OF A TYPICAL STEAN-ELECTRIC INTAKE SYSTEM kA( ( (
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t-t -. I ATTACHMENT 2 I-0 IMPINGEMENT DATA FORM (FORM TVA 20006, FRONT)
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- a. I ATTACHMENT 3 TRANSPORT INVOICE THWOT~tJ;N!@ IJ lf '}'l SITE CrF.D IN IItrIU _ _
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I DATE I CATAUVIIE No. Sent I ec'dI d I mIt9.1D benti I Rcc ' d Sentl liec ' d TVA 17140 (DOH&S-2-80) Page i of I Date 1/31/83