Harbor Generating Station

Appendix A

Field Sampling and

Sample Processing

Procedures

A1. Entrainment Field Sampling

A2. Entrainment Sample Sorting

A3. Entrainment Sample Identification

A4. Impingement Field Sampling
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A1-2

APPENDIX A1: PROCEDURE FOR COLLECTING PLANKTON SAMPLES

FOR ENTRAINMENT STUDIES

1.0 PURPOSE

The purpose of this document is to define the steps and equipment necessary to accurately collect plankton

samples using a wheeled bongo frame near the Harbor Generating Station (HGS).

2.0 RESPONSIBILITIES

2.1 Task/Field leader:

 Notify the station of the proposed sampling dates.

 Schedule and coordinate sampling surveys and notifying the U.S. Coast Guard prior to sampling.

 Verify that all investigating biologists conducting the sampling have read and understand these

procedures.

 Verify that procedures have been followed during sample collection and that the sampling has been

conducted safely.

 Verify that information on data sheets have been reviewed and properly recorded.

2.2 Investigating biologist:

 Conduct sampling using the following procedures.

3.0 HGS CONTACT INFORMATION

Name Cell/Outside Line E-mail Information

Mostafa Haji (310) 522-1316 Mostafa.Haji@ladwp.com

James Graden (310) 522-1752 James.Graden@ladwp.com

On-Site Emergency

Number

20300

4.0 PROCEDURES

4.1 Mobilization

a. Notify plant personnel of the dates of field sampling prior to the sampling day.

b. Ensure there are enough jars, labels, and preservative (formalin) for the sample collection. Print the

required number of blank field data sheets on waterproof paper.

c. Inspect the wheeled bongo frame, nets and codends for any damage. If damaged, repairs must be

made before sampling begins. Ensure that the flowmeters have been calibrated within the past 90

days and that they are operational. Attach a flowmeter in approximately the center of each frame

mouth.

d. Ensure that all additional equipment (Table A1-1) is in good operating condition. Make repairs if

necessary.

4.2 Sample Collection

a. Samples will be collected every six hours in a 24-hr period (four cycles) according to the schedule

developed by the Task Leader. A survey team consists of at least a boat driver and two investigating

biologists to conduct the sampling.
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b. Locate the station using the latitude/longitude coordinates. Determine the water depth with the

fathometer and record the water depth on the field data sheet.

c. Ensure that the winch line and a weight (15-20 lb salmon ball) are securely attached to the center of

the bongo frame. Ensure that the nets, codends and flowmeters are securely attached. The nets

should be 333-μm mesh.

d. Recordeachflowmeter’sserialnumberonthefielddatasheet(AttachmentA1-1). Record the

number from the flowmeter counter spins on the field data sheet prior to lowering the frame into the

water. Record the start time (local time) on the field data sheet.

e. Using the measured marks on the winch cable, lower the frame and nets through the water column

until the wheels on the sides of the frame are on the bottom. When the cable starts to slack, the boat

is motored forward and the cable is retrieved trying to maintain a 45-degree tow angle. When the

frame reaches the surface, carefully pull it into the boat. Verify that the nets have not picked up any

sediment from the bottom. If there is any sediment in the nets or codends, discard both samples by

detaching the codends and rinsing the nets of collected material and then reattach the codends.

Repeat the sample collection at that station.

f. Check that the number of spins on each flowmeter counter to verify that the target volume of 15-20

m3 has been collected (number of spins should be about 2,000). If the target volume has not been

met with one tow, subsequent tows will be performed at the station until the target volume has been

collected.

g. If the correct volume has been collected record the end number of spins from each flowmeter on the

field data sheet. Subtract the initial number of spins from the end number and record the total on the

field data sheet. If the integrity of either or both flowmeter readings is questionable (e.g., seaweed

wrapped around the propellers), discard both samples by detaching the codends and rinsing the nets

of collected material and then reattach the codends. Repeat the sample collection at that station.

h. Record the end time (local time) on the field data sheet.

i. Beginning at the top of the net, rinse the collected material down into the codend. Since the wash

water is not filtered and may contain plankton, rinse the net from the outside ensuring that unfiltered

water does not contaminate the sample. Inspect the net to ensure that it has been thoroughly rinsed.

Samples will then be carefully transferred to prelabeled jars with preprinted internal labels. The

sample from each net will be placed in separate labeled jars.

j. Detach the codend from net #1 and rinse the sample from the codend into a labeled sample jar using

a squirt bottle containing seawater. Then, using a graduated cylinder or other measuring device, add

enough formalin to make a 10%-formalin seawater solution. Rinse and inspect the codend of net #1

before reattaching to the net. Follow the same procedure for net #2. Sample preservation should be

completed soon after collection.

k. If the collected material will fill over 1⁄2 of the sample jar, split the sample into at least two labeled

jars so that there is enough ethanol for proper preservation.

l. Ensure that the sample jar contains both an inner label and an exterior label.

m. The following is an explanation of the coding for the field datasheet survey and station numbers and

jar labels:

n. Each survey number on the data sheet consists of a series of 5 letters followed by 2 numbers

(HGSEA##).Thefirstthreelettersare“HGS”referstoHarborGeneratingStation,andthe“EA”

refers to entrainment abundance. The two numbers refer to the survey number with the first survey

being 01. The survey number increases by one for each new 24-hour sampling effort.

o. The station designation consists of a letter-number-letter-number combination. The first letter refers

to the station being a Harbor or Entrainment station (see map in Attachment A1-1). The first number

refers to the number of the station that links to the station letter. The second letter designates the

replicate,either“A”or“B”.Thesourcewaterstationsonlyhaveonesamplesowillalwaysusethe
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A1-4

letter“A”.Therearetwosamplescollectedattheentrainmentlocationsotheletters“A”and“B”

will be used to separate these two replicates. The second number designates the net number, either

“1”or“2.”Forexample,H3A1meansthatthesamplewascollected from Station H3, Sample A,

and Net 1.

p. The date of sampling will correspond to the actual start date of each sample. At the start of a new

day (midnight), use a new field data sheet.

q. Deliver the samples to the laboratory at the completion of the sampling effort.

4.3 Sample Voiding in the Field

a. Samples should be voided if any of the following occurs: 1) possible flowmeter obstruction due to

kelp or other debris on the propeller, 2) obviously malfunctioning or damaged flowmeters; 3)

damaged (torn) nets found after a sample is collected; 4) large quantities of sediment in the net that

were collected when the wheeled bongo frame was on the bottom; 5) gear failure which prevents

completion of any tows/hauls; 6) an incident or situation which may prevent reliable data collection;

7) an incident or situation which may jeopardize the safety of sampling personnel.

b. If a hole or tear is found in the net mesh, mark the damaged area and either repair or replace the net.

Discard both samples and repeat the sample collection. Record this on the data sheet.

c. The number of flowmeter spins from the paired bongo nets needs to be checked in the field to

confirm that the measured volumes were similar.
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Table A1-1. Equipment List.

1. Wheeled bongo net frame, attached 333/335 micron mesh nets, codends, and calibrated

flowmeters (include at least 1 back up net and flowmeter)

2. Winch (davits) and line for net deployment and retrieval

3. Stock solution of formalin

4. Squeeze bottles

5. Labeled jars for sample storage

6. Data sheets, pencils, permanent markers, and labels

7. Wash-down pump

8. Watch

9. Fathometer

10. GPS
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IM&E Final Report Appendix A1: Entrainment Field Sampling Procedure

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Attachment A1-1. Example field datasheet for HGS station sampling.

Harbor Generating Station (HGS) Entrainment Abundance Field Data Sheet

Sheet #: Date: Mesh: Flowmeter 1: Conversion 1:

Survey #: H G S E A Crew: Net Dia.: Flowmeter 2: Conversion 2:

Station

Flowmeter

Start

Flowmeter

End

1

2

1

2

1

2

1

2

1

2

1

2

1

2

1

2

Survey: HGSEA## (Harbor Generating Station Entrainment Abundance) NOTES:

Date: MM/DD/YY

Station: A#A#

A#: (Station Designation - Harbor 1-6, or Entrainment 1)

A (Replicate A or B - Only Entrainment samples have two replicates)

#: (Net 1 or 2)

Tide: Ebb, Flood, High Slack (HS), or Low Slack (LS)

Reviewed By / Date: Entered By / Date: Copied By / Date:

(ft) (PST)

Station

Depth

(min)

Start

Time

(PST)

Total

End

Time

(E, F, HS, LS)

Cycle Temp Tide

(A#A#) (ppt)

0.335 mm

0.60 m

Sample

Number Salinity

Total

Flow

(cu. m)

Volume

o

(1-4) C
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IM&E Final Report Appendix A1: Entrainment Field Sampling Procedure

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Attachment A1-2. Map of HGS entrainment (E1) and source water (H16) sampling stations.
Harbor Generating Station

IM&E Final Report Appendix A2: Entrainment Sample Sorting Procedure

A2-1

APPENDIX A2: PROCEDURE FOR SORTING PLANKTON SAMPLES IN THE

LABORATORY

1.0 PURPOSE

The purpose of this procedure is to define the steps for sorting target organisms from plankton samples

collected at Harbor Generating Station, and to describe the Quality Control Program (QC) used to monitor

the sorting accuracy of individual sorters.

2.0 RESPONSIBILITIES

 Laboratory Supervisor is responsible for assuring that plankton sample sorting is in accordance with

written procedures.

 The Quality Control Supervisor is responsible for implementing the Quality Control Program, which

monitors sorting accuracy in accordance with written procedures.

 Investigating biologists are responsible for sorting samples in accordance with written procedures.

3.0 INSTRUCTIONS

3.1 Sorting Procedures

3.1.1 Sample Processing

a. Ensure that the proper equipment necessary for sample processing is available (Table A2-

1).

b. Samples that were originally fixed in formaldehyde after collection must be transferred to

70% ethanol before laboratory processing. This is done outside to lessen the exposure to

formaldehyde fumes. Only qualified personnel who have read and signed the information

about the hazards of working with formaldehyde may transfer samples.

1. A funnel with the appropriate mesh size attached to its bottom opening is placed into

a jar or can. The mesh must not be larger than that used during sample collection.

Place the jar and funnel in a tray so the sample can be retrieved if spillage occurs.

2. Pour the sample carefully into the canning funnel. The sample jar and jar lid are

rinsed with water, directing the water and organisms into the funnel. Rinse the sample

with water to flush the formaldehyde from the sample.

3. Rinse the sample into a labeled jar with 70% ethanol from a squeeze bottle. Make

certain that the jar has both an inner label and a jar top label. Additional ethanol is

added to the sample jar to cover the sample.

4. The waste formaldehyde and rinse water is then discarded into the appropriate

hazardous waste container.

c. Consult the sorting schedule posted in the processing laboratory to determine sorting

priorities.

d. Sign out the sample in the Laboratory Tracking MS Excel file and the Laboratory Sample

Tracking Sheet (Attachment A2-1)bywritingyourinitialsunderthe‘sorter’column.

TranscribeinformationfromthesamplelabelintotheSorter’sLogBook(AttachmentA2-

2) and into the sorter's notebook (each sorter has separate log sheets and a notebook for

this purpose).
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e. Take two clean canning funnels with attached meshnetting,onelabeled‘sorted’andthe

otherlabeled‘unsorted’.Themeshsizeshouldbenolargerthanthatusedtocollectthe

samples.

f. Placethe‘unsorted’canningfunneloverthe‘usedalcohol’bottleandfunnel,whichis

located in a dish so samples can be retrieved if a spill occurs. Pour the sample into the

canning funnel. The canning funnel will contain the material to be sorted, while the

ethanolwilldrainintothe‘usedalcohol’bottle.

g. Using 70% ethanol or 70% used alcohol in a squeeze bottle, rinse any remaining sample

from the sample jar, the jar lid and inner sample label into the canning funnel containing

the unsorted sample.

h. Placethe‘unsorted’funnelcontainingthesampleandtheempty‘sorted’funnelinto

individual glass bowls in a tray. Make sure the sample is covered with water so it will not

dehydrate during processing.

i. Usingforceps,transferasmallamountofthesamplefromthe‘unsorted’funneltothe

sorting tray. Add enough water to cover the sample. Distribute the sample in the sorting

tray.

j. Place the sorting tray on the base of the dissecting microscope. Adjust the magnification

so that the field of view is slightly larger than the width of an individual marked grid.

k. Arrange the light source to provide adequate illumination.

l. Carefully scan the entire sorting tray using the grids for orientation. Remove the target

organism with forceps and place them either into a shell vial containing 70% ethanol or

into a small dish containing water. Count the organisms as they are removed. A list of

what target organisms and when to pull them is posted in the lab.

m. Log the number of organisms removed from the sample in the sorter notebook.

n. Scan the tray a second time. If target organisms are found on the second pass, repeat a

third time. Continue this process until a scan does not produce any additional target

organisms.

o. Oncesorted,pourthesortedsampleintothe‘sorted’funnelandrinsewithasmallamount

ofwater.Takeasecondaliquotfromthe‘unsorted’funnelasdescribedabove.Repeat the

above steps until the entire sample has been sorted.

p. If the sorter thinks there will be more than 500 fish eggs in a sample then the sample may

be“subsampled”foreggs.When“subsampling”thesampleshouldbeprocessedfirstfor

fish larvae andselectedinvertebratelarvae.Whenreadyto“subsample”putthesorted

sample back in the original sample jar and fill the jar with 70% ethanol up to the lip of the

jar. Jar size varies, but they will typically be 500 ml (if sizes varies there will be a posting

inthelab).A‘subsample’shouldbe10percentofthesamplevolumesothesorterwill

use the aliquot transfer pipette with the 10 ml attachment and take 5 aliquots. The sample

should be stirred up in order to get a fair amount of sample in the aliquot. Once the aliquot

is processed for fish eggs it may be returned to the original sample jar with the rest of the

sorted sample. Make sure it is noted in the logbook and record the total volume of the

sample and the volume of the sub sample. There will be an extra data sheet in the

laboratory tracking sheets and a column in the MS Excel tracking sheets to record the sub

sample information. On top of the sample jar put a white dot with survey number, sample

number, sorters initials, sub sample date, and“SS”.

q. When the sorting has been completed, the sorted organisms should be placed into a shell

vial containing 70% ethanol. Fill the shell vial completely with clean 70% ethanol then

place cotton into the top end of the vial to keep the organisms inside. Place the vial into a

labeled snap cap containing 70% ethanol. Make sure the shell vial and cotton are

completely covered with 70% ethanol.
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IM&E Final Report Appendix A2: Entrainment Sample Sorting Procedure

A2-3

r. Label each jar lid with the appropriate colored dot label. Prepare a waterproof inner label

for the jar containing the shell vial. Both labels should contain the following information:

1. Survey number

2. Collection date

3. Station, cycle and sample number

4. Collection start time

5. Jar number (if more than one jar)

6. Sorter’sinitials

7. Number of organisms in shell vial

s. The total number of sorted organisms and the total time required to process the sample is

recorded in the sorter's notebook.

t. Put the sorted sample back into the original sample jar. Used alcohol may be used to fill

sample jar to at least 3⁄4 full. Rinse any remaining sample from the funnel into the jar using

a squirt bottle containing ethanol. Make sure the inner waterproof label is in the sample

jar. Thoroughly clean the funnels of all remaining sample.

u. If a sample must be stored before completion:

1. Put the sorted portion of the sample back into the original sample jar. Rinse any

remaining material from the funnel into the jar using a squirt bottle containing

ethanol. Make sure that the sample is adequately covered with ethanol.

2. Put the unsorted sample into a second jar.Rinseanysamplefromthe‘unsorted’

funnel into the jar using a squirt bottle containing ethanol. Using a dot label, label the

jarlidwiththesampleidentificationinformation,sorter’sinitials,andtheword

“unsorted”.Makeanadditionalinnerlabel with the sample identification information

andmarked‘unsorted’.Placethelabelinsidethejarwiththe‘unsorted’sample.

Ensurethatthe‘unsorted’sampleisadequatelycoveredwithethanol.

3. The sorted and unsorted portion of the sample should be stored until sorting can

continue.

3.1.2 Once the sample is completed, place an appropriately colored dot label on the jar top with the

sorter's initials and date of sorting. Return the jar to the box from which it was originally

removed.

a. Transcribe the information recorded in the sorter's notebook to the computer on the

Laboratory Tracking Sheets and the Quality Control log and on the Laboratory Sample

Tracking Sheet (Attachment A2-1), and to the Sorter's Log (Attachment A2-2).

3.2 Sorting Quality Control Program

3.2.1 QC Sorting Criteria

a. The first ten samples that are sorted by an individual are completely resorted by a

designated QC sorter. A sorter is allowed to miss one target organism when the original

sorted count is 119. For original counts above 20 a sorter must maintain a sorting

accuracy of 90%.

b. Afterthesorterhaspassed10consecutivesorts,theprogramisswitchedtoa‘1samplein

10’QCprogramforthatsorter.Afterthesorterhascompletedanother10samples,one

sample is randomly selected by the designated QC sorter for a QC resort.

c. If the sorter maintains the 90% accuracy sorting rate for this sample, then the sorter

continuesinthe‘1samplein10’QCmode.

d. If a sample does not meet the 90% accuracy rate their subsequent samples will be resorted

until 10 consecutive samples meet the criteria.
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3.2.2 QC Resorting

a. Sorting procedures used during the QC resort are the same as the sorting procedures

described in Section 3.1.

b. All fish and selected invertebrate larvae that were missed by the sorter are removed during

the QC resort.

c. For the QC process, a larval fish is defined as having a head plus at least 50% of the body.

Any parts without a head and/or less than 50% of the body will be considered fragments

and will not be counted against the original sorter as a missed fish. However, it is

important for each sorter to remove all fish and fragments from each sample that is sorted

andcorrectlyrecordthemas#fish/#fragmentsinthesorter’snotebookandonthe

tracking sheet.

d. Any vials of fish larvae or selected invertebrate larvae generated from the resort are

labeled with an orange dot label, and labeled as described in the sorting procedures with

theadditionof“QC”addedtothelabel.

e. An orange dot label should also be placed on the top of the jar of the sample that was

resortedandlabeledwiththeQCperson’sinitials,surveynumber,samplenumber,and

date the resort was completed.

f. The vials are stored in the appropriate location.

3.3 Waste Disposal

3.3.1 No formaldehyde or water contaminated with formaldehyde should be disposed of into the

sewage system. Dispose of any water contaminated with this chemical in the designated

waste water container to be disposed of at a local hazardous materials waste depository.

4.0 RECORDS

4.1 All data sheets are later reviewed by the Lab Manager or designated staff.

4.2 Original data sheets are permanently stored.
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Table A2-1. Equipment List

1. Tray or dish

2. Bowls

3. Sample jars

4. Two canning funnels with attached plankton mesh

netting,labeledwithmeshsize,andlabeled‘sorted’

and‘unsorted’

5. Squeeze bottle containing 70 percent ethanol

(denatured)

6. Squeeze bottle containing fresh water

7. Sorting tray or petri dish marked with a sorting grid

8. Dissecting microscope with light source

9. Glass shell vials and cotton

10. Jar/vials with lids

11. Forceps

12. Waterproof labels

13. Dot labels

14. Sorter's notebook

15. Plankton splitter
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HARBOR GENERATING STATION (HGS) –Lab Tracking Sheet

Survey:

Sample Information Sort Information QC Information

Project #

Sample

Date Station Cycle Sample

Start

Time # Jars Sorter

Date

Sorted

Time

(hrs) # Fish Fish Eggs # Megs

# Lobster/

Squid QC’dBy

QC

Date

QC

Fish

QC

Other

*

*specify which (fish eggs(E), megs(M), lobster(L), or squid(S))

Attachment A2-1. Lab Tracking Sheet
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A2-7

Harbor Generating Station-Sorter's Log

(HGSEA)

Name:

Sample Information Sort Information Quality Control

Sort

Time

Survey

Number Station Cycle Sample

Collection

Time

Date

Sorted

# of

Fish

# of

Fish

Eggs

# of

Megs

Lobster/

Squid

QC'ed

By

QC'ed

Date

QC

Fish

Fish

P / F

QC

Other

*

Other

P / F

*specify which (fish eggs(E), megs(M), lobster(L), or squid(S))

Attachment A2-2 Sorter’sLogSheet
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IM&E Final Report Appendix A3: Entrainment Sample Identification Procedure

A3-1

APPENDIX A3: PROCEDURES FOR THE IDENTIFICATION OF

LARVAL FISHES and TARGET INVERTEBRATES

1.0 PURPOSE

The purpose of these procedures is to define the steps for identifying planktonic organisms, and to describe the

QualityControl(QC)Programusedtomonitortheaccuracyofeachindividual’sidentification performance.

2.0 RESPONSIBILITIES

 The Lead Taxonomist is responsible for assuring that plankton identifications are performed in

accordance with written procedures and for implementing the Quality Control Program.

 Investigating biologists are responsible for plankton identifications and for monitoring accuracy in

accordance with written procedures.

3.0 INSTRUCTIONS

3.1 Identification procedures for larval fishes, Cancer spp. crab and Panulirus lobsters.

a. Ensure that the proper equipment necessary for the identification of target organisms is

available (Table A3-1).

b. The fish and target invertebrates from each sample are kept in separate containers and

processed following this procedure in essentially the same manner.

c. The container of target organisms to be identified is carefully emptied into a dish. The dish is

placed on the microscope stage and the lighting adjusted to provide adequate illumination.

d. Each target organism is identified to the lowest taxonomic classification possible. The total

number of each taxon is recorded on the Entrainment /Source Water Plankton Tow Lab Data

Sheet (Attachment A3-1).

e. All individuals of each identified taxon of larvae from a sample should be put into a shell vial

containing 100% ethanol. Each vial should contain a label with the taxon name and sample

number. Cotton should be pushed into the upper end of the vial to keep the label and

organisms enclosed.

f. Mutilated larvae (partial organisms that are missing body parts and are unable to be

identified) are placed in a separate labeled vial. Whole larvae that are unidentified, are placed

in a separate labeled vial.

g. All vials containing target organisms from an individual sample should be put into a labeled

jar containing enough ethanol to cover the vials. The jar should contain both an inside label

and a label attached to the outside of the lid denoting the sample number, date and time

collected,andidentifier’sinitials.Tightenthejarlidtopreventevaporationofthe

preservative. Samples with many different fish taxa may require more than one labeled jar.

h. OntheLaboratorySampleTrackingSheet,recordtheidentifier’sinitialsanddatesamplewas

loggedin.Theidentifier’slogwillcontainthetotalnumberoflarvaeidentifiedandthedate

identified. If more than one day was needed to complete the identification, record the date the

sample identification was completed.

i. Place the jar into the appropriate box containing identified samples.

j. Dispose of any liquids containing ethanol into the appropriate waste container.

3.2 Identification Quality Control (QC) Program
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3.1.2 Fishes

a. The first ten samples of larval fishes that are identified by an individual identifying biologist

will be completely re-identified by a designated identification QC biologist. A total of at least

50 individuals from at least 5 taxa (50/5 criteria) must be present in these first ten samples. If

the first 10 consecutive samples do not pass the 50/5 criteria, additional samples must be reidentified until this criteria is met.

b. The identifying biologist must maintain a 95% identification accuracy level in these first 10

samples. For all samples, if a sample contains between 119 larvae, one larvae can be

misidentified and the sample will not fail the QC check.

c. If the identifying biologist identifies a larval fish to a certain family or genus and

subsequently the identification QC biologist is able to refine the identification to a lower

taxonomic level, this will not be considered a misidentification pertaining to the 95%

identification accuracy level. A misidentification will be one in which the identifying

biologist identifies the fish as belonging to a certain family, genus or species, and then the

identification QC biologist determines that the initial identification was incorrect and changes

the identification to a different family, genus or species or changes it to a higher taxonomic

group.

d. After the identifying biologist has passed 10 consecutive samples, the program is switched to

a“1samplein10”QCprogram.Aftertheidentifyingbiologisthascompletedanother 10

samples, one sample is randomly selected by the designated identification QC biologist for a

QC review.

e. If this sample maintains the 95% accuracy level as determined by the identification QC

biologist, then the identifying biologist continues in the“1samplein10”QCmode.Ifa

sample does not meet the 95% accuracy level, their subsequent samples will be re-identified

until 10 consecutive samples meet this level of accuracy.

f. Any misidentified fish found by the identification QC biologist, will be placed into the

appropriate labeled vial for that sample. This information will be recorded on the Fish

Identification Data Sheet.

3.1.3 Cancer spp. and Panulirus spp.

a. The first ten samples identified by an individual identifying biologist will be completely reidentified by a designated identification QC biologist.

b. The identifying biologist must maintain a 95% accuracy level in these first 10 samples. For all

samples, if a sample contains between 1-19 larvae, one larvae can be misidentified and the

sample will not fail the QC check.

c. After the identifying biologist has passed 10 consecutive samples, the program is switched to

a“1samplein10”QCprogram.Aftertheidentifyingbiologisthascompletedanother10

samples, one sample is randomly selected by the designated identification QC biologist for a

QC review.

d. If this sample maintains the 95% accuracy level as determined by the identification QC

biologist,thentheidentifyingbiologistcontinuesinthe“1samplein10”QCmode.

e. Ifanidentifier’ssampledoes not meet the 95% accuracy level, their subsequent samples will

be re-identified until 10 consecutive samples meet this level.

f. Any misidentified larva found by the identification QC biologist, will be placed into the

appropriate labeled vial for that sample and recorded on the appropriate laboratory

identification data sheet.
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3.2 Larval Fish Measuring

3.2.1. Larval Fish Measuring Procedure

g. Turn on the computer, camera, and light source at the measuring station.

h. Consult the measuring schedule near the measuring station to determine measuring priorities

and retrieve the binder containing the appropriate data sheets.

i. Locate the box containing the fish to be measured and place it in a easily accessible area close

to the measuring station.

j. Open the Optimas Image Analysis or ImageJ software by clicking with the mouse on the

appropriate software icon.

k. Open the Larval Fish Measuring macro in Optimas, or the FishMeasure2 macro in ImageJ and

followthemacros’directions.

l. Select the jar of fish to be measured and consult the jar label. Compare data on the jar label

with the inner label and the data sheet for this sample. Consult an identifier regarding

discrepancies between labels.

m. Enter the data queried for by the macro including the last five digits of the serial number, the

measurer’sinitials,thedatasheetsequencenumberandthespeciescode.

n. Open the jar and remove the vials for the target taxa to be measured as per the posted list.

Place the vials in a rack designed to allow the vials to maintain an upright posture so as to

reduce spillage.

o. Select the first vial to be measured. Remove the cotton and the label. Compare the label with

the data sheet for confirmation.

p. Empty the vial into a shallow dish. Remove any fish that have adhered to the vial, cotton, the

label, or any tools used in the transferring process and place the fish in the dish. Add alcohol

to the dish if necessary to prevent desiccation.

q. If the number of larval fish in the vial exceeds what can be reasonably measured on a single

image capture, transfer some of the fish to another glass dish and immerse them in alcohol.

r. Place the dish on the stage of the microscope. Arrange the fish so that all fish appear on the

screen. Adjust the zoom, focus, and lighting for the best possible image. If this is the first

group of larval fish being measured, or if the magnification has been changed, it is necessary

to re-calibrate. Place the micrometer on the stage of the microscope and re-calibrate by

drawing a line from one of the micrometers millimeter marks to another, noting the distance

between the two marks, and entering that value when queried. Replace the dish containing the

larval fish to be measured.

s. Measure larval fish by drawing a line from the pre-maxillary to the end of the notochord,

being careful to follow the contours of the fish. If the fish is too damaged to find either the

pre-maxillary or to estimate the path taken by the notochord, do not measure, and proceed to

the next larval fish. If the line does not adequately approximate the larval fish’slengthitmust

be re-measured.

t. Notetheprogram’sdisplayofthemeasurement,checkthatitseemsreasonable.Ifitdoesnot

seem reasonable, it may be necessary to re-calibrate and re-measure. If the problem persists,

contact an identifier. Make note of any problems in measuring and post near the measuring

station.

u. The macro will store the measurement in separate data files along with the necessary sample

information.

v. Repeat the above steps for all fish in the dish.
Harbor Generating Station

IM&E Final Report Appendix A3: Entrainment Sample Identification Procedure

A3-4

w. When all larval fish in the dish have been measured, fill the vial that originally contained the

fish with alcohol and transfer the measured fish to the vial.

x. If the larval fish from this vial have been segregated into two or more groups, place another

group into the dish, being careful to submerse them in alcohol, and measure as above. Do not

measure more than fifty larval fish of any one taxon from each survey.

4.0 RECORDS

4.1 All data sheets are later reviewed by the Lab Manager or designated staff.

4.2 Original data sheets are permanently stored.
Harbor Generating Station

IM&E Final Report Appendix A3: Entrainment Sample Identification Procedure

A3-5

Table A3-1. Equipment List

1. Dissecting microscope, with camera attachment connected to computer

equipped with Optimas 6.2 or ImageJ if measuring larvae

2. Light source

3. Micrometer

4. Sorting tray or petri dish

5. Squeeze bottle containing 70% ethanol (denatured)

6. Glass shell vials

7. Holder for shell vials

8. Jar containing target organisms to be identified

9. Cotton

10. Forceps

11. Waterproof labels

12. Dot labels

13. Data sheets

14. Identifier’slogsheet

15. Taxonomic references
Harbor Generating Station

IM&E Final Report Appendix A3: Entrainment Sample Identification Procedure

A3-6

Attachment A3-1. Entrainment /Source Water Plankton Tow Lab Data Sheet

HARBOR GENERATING STATION (HGS) - Lab Data Sheet Sheet:

Start Time: Cycle: Station:

Taxon

NOTES: Total:

Count Count

Survey: Date:

Species

Code Comments

Entered By / Date

Stage

Entrainable

Fish

Eggs

Inverts

QC Resort

Additional Total

ID'ed By / Date ID QC By / Date QC Resort By / Date

Count
Harbor Generating Station

IM&E Draft Report Appendix A4: Impingement Field Sampling Procedure

A4-1

APPENDIX A4: IMPINGEMENT FIELD SAMPLING PROCEDURES

1.0 PURPOSE

The purpose of this document is to identify the procedures and equipment necessary to accurately collect

and process impingement samples at the Harbor Generating Station (HGS).

2.0 RESPONSIBILITIES

2.1 Task/Field leader:

 Contact plant to obtain clearance for personnel that will be conducting the sampling.

 Verify that all investigating biologists conducting the sampling have read and understand these

procedures.

 Verify that procedures have been followed during sample collection and that the sampling has been

conducted safely.

2.2 Investigating biologist:

 Conduct sampling using the following procedures.

3.0 HGS CONTACT INFORMATION

Name Cell/Outside

Line

E-mail Information

Mostafa Haji (310) 522-1316 Mostafa.Haji@ladwp.com

James Graden (310) 522-1752 James.Graden@ladwp.com

On-Site Emergency

Number

20300

4.0 PROCEDURES

Impingement sampling will only be undertaken when there is water passing through the traveling screens

for Unit 5. If only one pump is in operation, proceed with sample collection using the following

procedures. Each normal operation impingement survey consists of an initial cleaning period followed by

four 6-hr sampling cycles. Table A4-1 presents the proposed schedule for each survey.

4.1 Mobilization

a. Notify plant personnel of the dates, times, and names of the biologists that will be onsite during each

survey.Allpersonnelwillrequireaphotoidentification(driver’slicense,passport,etc.)toobtain

access to the plant site.

b. The equipment listed in Table A4-2 is required for sampling and should be checked before leaving

for the plant. Verify that any scales used for the sampling have been calibrated within the previous

three months.
Harbor Generating Station

IM&E Draft Report Appendix A4: Impingement Field Sampling Procedure

A4-2

4.2 Traveling Screen Sample Collection

Material impinged at Unit 5 is rinsed from the traveling screens into a metal collection basket placed in the

rectangular sump. Figure A4-1 shows the traveling screens (TS) area of Unit 5 and Figure A4-2 shows the

rectangular sump where impinged materials accumulate.

a. Make sure that the collection basket has been emptied prior to the survey. If there is any debris in it,

contact an operator to have them remove the basket using a crane so that it can be emptied.

b. The initial screenwash is for cleaning purposes only; do not process any materials from the sump

after the cleaning rinse. The time at the end of the initial TS rinse is the beginning of Cycle 1.

Record this on the appropriate datasheet.

c. The mesh in the collection basket has a larger mesh than the mesh of the TS. Secure a mesh

net/vexar basket (with mesh of the same size or smaller than the TS mesh) inside of the metal basket

so that impinged materials can easily be removed. If the debris load is too heavy for the mesh

net/vexar basket or it is damaged and materials accumulate in the metal basket, make sure an

operator is available to use a crane to pull the metal basket out for sample collection.

d. Have plant personnel activate the TS wash system thirty minutes prior to the end of each cycle so

that all impinged material is rinsed from the screens into the collection basket.

e. Remove all impinged fish and invertebrates from the impinged debris.

f. Replace the mesh net/vexar basket in the rectangular sump before initiation of the screenwash for the

next cycle.

g. All collected impinged material will be processed using the procedures in following section.

4.3 Sample Processing

a. Remove all fishes and invertebrates from the impinged debris. Record the volume of the debris

(gallons) on the datasheet. Also record the composition and percentage of the debris.

b. All fishes, crabs, shrimps and prawns, and cephalopod mollusks are identified, counted, measured

(see measurement criteria below), and weighed. This information is recorded on the appropriate

datasheet.Allotherinvertebratesareidentifiedandrecordedaspresentbyenteringa“P”inthe

count box.

Organism Group Length Measuring Criteria

Fishes Total body length for sharks, disc width for skates and rays and

standard lengths for bony fishes

Crabs Maximum carapace width

Spiny lobster and

Shrimps

Carapace length, measured from the anterior margin of carapace

between the eyes to the posterior margin of the carapace

Octopus Maximum“arm”spread,measuredfromthetipofonetentacletothe

tip of the opposite tentacle

Squid Dorsal mantle length, measured from the edge of the mantle to the

posterior end of the body

c. Record all organism names on the appropriate datasheet, using their scientific names whenever

possible. The taxa codes are recorded after the datasheets are returned to the office.

d. Make certain of all identifications before recording the name on the datasheets. If an organism

cannot be positively identified it should be saved. The voucher specimen should be placed in a

plastic bag with a waterproof label indicating the location, cycle, date, time, and the initials of the

collector.Ifpersonnelonthenextcyclecanpositivelyidentifytheorganismrecordtheorganism’s

name on the datasheet. If positive identification cannot be made the organism is returned to the

laboratory for identification.
Harbor Generating Station

IM&E Draft Report Appendix A4: Impingement Field Sampling Procedure

A4-3

e. If a large number (more than 30) of any individual countable species is collected during a cycle,

individually measure and weigh 30 randomly selected individuals of this species and then count and

measure the remaining individuals and record this information on a separate line on the datasheet.

For example: if 198 deepbody anchovies were collected, randomly select 30 individuals and record

on the first row Anchoa compressa, count = 1, Length = standard length (the distance from the tip of

the snout to the posterior vertical margin of the hypural plate) to the nearest mm, weight = weight to

nearestgram,sex=“-“(ifthesexcannotbedeterminedwithoutdissection,recorda“-“),and

condition = alive (A), dead (D), or mutilated (M). Continue this procedure for the other 29 randomly

chosen deepbody anchovies. Then batch weigh the remaining individual. If all of the individuals are

alive,putan“A”intheCond.box.Ifsomearedeadandsomemutilated,use additional rows to fill

in the appropriate information in the corresponding row(s).

f. Determine the sex of the countable organisms to the extent possible without dissection. Assign the

letter M to refer to males, F for females, J for juveniles, G for gravid.Puta“-“ifthesexcannotbe

determined without dissection.

g. Record the condition of each countable organisms: A for alive; D for dead; M for mutilated. If an

individual is mutilated, do not measure the length. If there are more than 30 non-mutilated

individuals, the mutilated individual(s) can be weighed with the batch weight of the additional

individuals. If there are less than 30 non-mutilated individuals, record the weight of the mutilated

individual(s) but not their lengths.

h. Record any anomalies or other notes (encountered in each cycle) in the notes section on the

datasheet.

i. At the end of each cycle verify that: a) the sampling procedures have been followed correctly, b) the

data has been recorded correctly and legibly, and then c) sign and datethe“Reviewedby/Date”

section at the bottom of the datasheet.

j. Put all dead animals and discarded debris in trash dumpsters. Make sure to double bag the material

as collection of the trash may not occur for several days.

k. Quality control (QC) checks will be preformed on at least a quarterly basis to verify all organisms

are being removed from the debris and that the correct identification, enumeration, length and weight

measurements of the organisms are being recorded on the datasheet. The QC team will randomly

choose the actual impingement cycles that will be checked and will resort the debris for any missed

organisms. All organisms will then be identified, re-measured and re-weighed by the QC team to

ensure that the data is being recorded correctly. If a sampling team fails a QC check, they will be

retrained on fish identification and sample collection. QC checks will be performed on the sampling

team until they pass the QC requirements. The QC checks will be fully documented and reported to

the Project Manager.

4.4 General

a. All information recorded on the datasheets must be written legibly with a pencil.

b. Keep information separate for each cycle

c. The survey number will be determined based on the week corresponding to that survey (e g., week 1

= survey 1). Make sure the correct survey number is recorded.

d. Make certain that the unit #s and cycle numbers are correct on the datasheet you are using. Record

the date and time for the start and end of each screen wash (generally 15 to 20 minutes) and cycle

duration times (generally 6 hours). Each 24-hr survey is divided into 4 six-hour cycles.

e. Record the names of all personnel present during each cycle.

f. Use military time (0000 –2400) to record every cycle collected. Record all times as local time

(Pacific Standard Time or Pacific Daylight Time).
Harbor Generating Station

IM&E Draft Report Appendix A4: Impingement Field Sampling Procedure

A4-4

g. During each screen wash, verify that the screens are operating properly (the screens should be

moving and the water should be spraying). Check with the operator to find out how many circulating

water pumps are operating.

h. If a survey cannot be completed or is cancelled, make a note on the appropriate data sheet explaining

the reason for the cancellation. Write the survey number that corresponds to that week, date and sign

the datasheet.

i. At the end of each screen wash, record the relevant meteorological data.

j. If the traveling screens trip before the 6-hour cycle is over, collect all material and process it as part

of the upcoming cycle. If possible, have the screen wash system run at the scheduled times.

4.5 Heat Treatments

During heat treatments follow the same procedures as during normal impingement sampling. Use a separate

data sheet for each species collected. A single data sheet can be used for several species if low numbers of

these species are collected.

If an extremely large amount of material is collected in the sump basket, sub-sampling of the most

abundant fishes/shellfishes should occur to minimize the time taken to process the sample. Sub-sampling

procedures are as follows:

a. Remove the less abundant fishes/shellfishes from the impinged material; and record as individuals

on the datasheets.

b. Collect a sub-sample (for example, two 3-gallon sub-samples) from the pile of impinged material.

Make sure to randomly sample the pile by collecting organisms from different areas of the pile.

Discard the remaining material and record the volume discarded on the data sheets.

c. The number and weight of the organisms collected from each sub-sample should not be recorded

with the other data. Record the sub-sample data on a separate datasheet. Make certain that record of

the organisms from the sub-samples can be linked back to the quantity of material discarded and not

sampled.
Harbor Generating Station

IM&E Draft Report Appendix A4: Impingement Field Sampling Procedure

A4-5

Table A4-1. Target schedule for 24-hour impingement sampling effort (schedule

assumes that at least one circulating water pump is in operation). Based on 30

minutes for complete rotation of travel screens at each unit.

Time Unit 5

8:00 Rinse and Clean

8:30 Start Cycle 1

9:00

9:30

10:00

10:30

11:00

11:30

12:00

12:30

13:00

13:30

14:00 Rinse Cycle 1

14:30 Start Cycle 2

15:00 Process Cycle 1

15:30

16:00

16:30

17:00

17:30

18:00

18:30

19:00

19:30

20:00 Rinse Cycle 2

20:30 Start Cycle 3

21:00 Process Cycle 2

21:30

22:00

22:30

23:00

23:30

0:00

0:30

1:00

1:30

2:00 Rinse Cycle 3

2:30 Start Cycle 4

3:00 Process Cycle 3

3:30

4:00

4:30

5:00

5:30

6:00

6:30

7:00

7:30

8:00 Rinse Cycle 4

8:30 Process Cycle 4

9:00

Note: Schedule is separated into 30-minute increments to show activities associated

with each cleaning and collection cycle at the two sets of traveling screens.
Harbor Generating Station

IM&E Draft Report Appendix A4: Impingement Field Sampling Procedure

A4-6

Table A4-2. Equipment List.

1. Datasheets printed on waterproof paper

2. Pencils

3. Scales (Electronic and spring)

4. Measuring boards

5. Fish and invertebrate identification keys

6. Buckets and plastic totes

7. Floodlights and extension cords

8. Calipers

9. Calculator

10. Hardhats

11. Safety Glasses

12. Rubber/latex gloves

13. Clipboard
Harbor Generating Station

IM&E Draft Report Appendix A4: Impingement Field Sampling Procedure

A4-7

Figure A4-1. Unit 5 traveling screens.
Harbor Generating Station

IM&E Draft Report Appendix A4: Impingement Field Sampling Procedure

A4-8

Figure A4-2. Unit 5 traveling screen collection basket.
Harbor Generating Station

Appendix B

Model Parameterization

B1. Estimating Total Entrainment

B2. Estimating Proportional Entrainment

and the ETM Calculations

B3. Demographic Model Calculations
Harbor Generating Station

IM&E Final Report Appendix B1: Estimating Total Entrainment

B1-1

Appendix B1

Estimating Total Entrainment

The following section describes calculations used for assessing entrainment effects at the Harbor

Generating Station (HGS). The equations are presented in a general form that is applicable to

sample designs that may have differing numbers of stations, sampling periods, or replicates. The

HGS entrainment study will sample only one station. While the summation signs over stations

are presented in the equations they will be summing over an n of one in the actual calculations

and therefore will drop out of the formulas.

A general form can be written for summing entrainment over stations at an intake or entrainment

site using cycles within a day and days within time periods. Let

i = period i N 1, ,  ;

j = day within period j N 1, ,  i;

k = cycle within day k N 1, ,  ij;

l = station l N 1, ,  ijk ;

m = volume at station within cyclem N 1, ,  ijkl.

The total larval entrainment at an intake source can be expressed as

1 1 1 1

N Ni

N N ij ijk

T ijkl ijkl

i j k l

E V 

   



(A1)

where

ijkl = density of larvae at the lth station within the kth cycle on the jth day in the ith time

period;

Vijkl = volume of water passing the at the lth station within the kth cycle on the jth day in

the ith time period.

This summation assumes that stations represent the total intake volume of the power plant. It also

assumes that the larval density in the volume of water passing a station is constant over time and
Harbor Generating Station

IM&E Final Report Appendix B1: Estimating Total Entrainment

B1-2

space over any cycle. An estimate of the total larval entrainment can be made by taking ijkl n

samples of the Nijkl volumes passing a station as

1 1 1 1 1

ˆ

N N N n N ij ijk ijkl i

ijkl

T ijklm

i j k l m ijkl

V

E

n



    

 

(A2)

If we also assume that entrainment volume is constant and the same at all stations then

1 1 1 1 1

ˆ 1

N N N n N ij ijk ijkl i

T ijkl ijklm

i j k l m ijkl

E V

n



    

  

(A3)

Strata will be defined as the stations and cycles with constant Nij and Nijk . In addition, we

sample i

n days of the Ni

possible during a period so that

1 1 1 1 1

1 1 1 1 1

ˆ 1 1

1 1

n N N n N ij ijk ijkl i

T i ij ijk ijkl ijklm

i j k l m i ij ijk ijkl

n N N n N ij ijk ijkl i

i ijklm

i j k l m i ij ijk ijkl

E N N N V

n N N n

V

n N N n





    

    

 

    

 

    

  

  

(A4)

where

1 1 1

Ni

N N ij ijk

i ijkl

j l k

V V

  



If only one day per period is sampled Equation A4 can be expressed as



1 1 1 1

1 1 1

ˆ 1

1

N N n N ij ijk ijkl

T i ijklm

i k l m ij ijk ijkl

N N N ij ijk

i ijkl

i k l ij ijk

E V

N N n

V

N N





   

  

 

    

 

    

  

 

(A5)

with estimated variance

  

   2

2

1 1 1

ˆ 1

1

N N N ij ijk

ijkl ijkl

T i

i k l ij ijk ijkl ijkl

n Var

Var E V

N N N n



  

  

      

 

(A6)

where
Harbor Generating Station

IM&E Final Report Appendix B1: Estimating Total Entrainment

B1-3

  

  

 



2

1

1

;

1

.

ijkl

ijkl

n

ijklm ijkl

m

ijkl

ijkl

n

ijklm

m

ijkl

ijkl

Var

n

n

 























Estimates of ETbased on Equation A5 will be used in FH and AEL calculations to estimate

annual effects of entrainment on fishes and invertebrates. Equation A6 will underestimate the

true variance because it does not include within-period variance. In practice, we ignore the finite

population correction, 1

ijkl

ijkl

n

N

 



   

because Nijkl is large. Estimators similar to Equation A5 and

Equation A6 are used for calculating survey period estimates of intake and source populations

for use in ETM calculations.
Harbor Generating Station Appendix B2: Estimating Proportional

IM&E Final Report Entrainment and the ETM Calculations

B2-1

Appendix B2

Estimating Proportional Entrainment

and the ETM Calculations

The empirical transport model (ETM) is used to estimate the total mortality probability for larvae

from power plant entrainment. The estimate is based on periodic estimates of the probability of

entrainment mortality based on daily samples. In the following calculations we assume all larvae

entrained die. Generally, sampling takes place over the course of a year so that larval mortality of

various species is estimated.

The daily probability of entrainment can be defined as

 

i

i

abundance of entrained larvae

abundance of larvae in source population

probability of entrainment in th time period 1, , .

PEi

i i N



  

In turn, the daily probability can be estimated and expressed as





i

i

i

E

PE

R



(B1)

where

Ei = estimated abundance of larvae entrained in the ith time period i N 1, ,  ;

Ri = estimated abundance of larvae at risk of entrainment from the source

population in the ith time period i N 1, ,  .

Estimating Daily Entrainment

The estimate of total Harbor Generating Station (HGS) entrainment on day j in period i can be

expressed from equation (A4) as
Harbor Generating Station Appendix B2: Estimating Proportional

IM&E Final Report Entrainment and the ETM Calculations

B2-2



4 1 3

1 1 1

4 1 3

1 1 1

1

3

1

12

ij ijkl ijklm

k l m

ij ijklm

k l m

E V

V





  

  



      

 

 

(B2)

with associated variance

 

2 4 1

2 2

1 1

1 3 1

12 ijkl ij ij ij

k l ijkl

Var E E V S

N



 

  

 





   



(B3)

which can be estimated by

  

2 4 1

2 2

1 1

1 3 1 .

12 ijkl ij ij

k l ijkl

Var E V s

N



 

  

 





   



(B4)

The finite population correction [i.e., 3

1

Nijk

 



   

] can be ignored because Nijkl is exceedingly

large. Only one day is sampled per period. The period estimated entrainment and variance are



4 1 3

1 1 1

1

12 i i ijklm

k l m

E V 

  

      

(B5)

 

2 4 1

2 2

1 1

1

.

12 ijkl i i

k l

Var E V s

 

      

(B6)

Estimating Numbers of Larvae at Risk

With the defined and agreed-upon sources of Los Angeles Harbor (S) larvae, the daily

abundance of larvae at risk can be estimated by

  ij S Sij

R V  (B7)

where VSdenotes daily exchanged and static volumes at Los Angeles Harbor (S), and  denotes

an estimate of average density in each respective source water bodies. The variance of

Expression B7 can be written as

Var R R V Var ij ij S S S | |  2  

ij ij   (B8)

The individual variances within Formula B8 describe temporal-spatial variance in density within

the source population during the day of sampling. Six source water locations are sampled in Los

Angeles Harbor. Ideally, tow samples would be collected randomly through time and space

during a sampling day over a potential source population. However, practical limitations due to

sampling a large area required a directed and fixed time and location sampling scheme. Our
Harbor Generating Station Appendix B2: Estimating Proportional

IM&E Final Report Entrainment and the ETM Calculations

B2-3

source water estimates of population and variance are made for each period using only one day,

i.e.   R R i ij  and Var R Var R R  i ij ij   | .

Period Entrainment and ETM Calculations

By dividing estimated period entrainment (B5) by the corresponding source population (B7) an

estimate of entrainment mortality can be written as







i

i

i

E

PE

R

 (B9)

Variance for the Estimate of PEi

The variance for the period estimate of PEican be expressed as

 





,

i

i i i i

ij

E

Var PE PE Var E R

R

 

  

   

.

Assuming zero covariance between the entrainment and source and using the delta method

(Seber 1982), the variance of an estimator formed from a quotient (like PEi) can be effectively

approximated by

2 2

( ) ( ) .

A A

A B B Var Var A Var B

B A B

     

     

       

       

       

The delta method approximation of ( )  Var PEiis shown as

 



i

i

i

S S

E

Var PE Var

V 

 

       

where by the Delta method can be approximated by

       



 

2

2

2

1

i

i

i

i

i i S S

S S S S

E

Var PE Var E Var V

V V



 

   

        

   

      

(B10)

and is equivalent to
Harbor Generating Station Appendix B2: Estimating Proportional

IM&E Final Report Entrainment and the ETM Calculations

B2-4

   

2 2

2

i PE CV E CV V i i S S

   

 

where

  i S Sij

R V  and



  2

.

Var

CV









Regardless of whether the species has a single spawning period per year or multiple overlapping

spawnings the estimate of total larval entrainment mortality can be expressed by

    1

1 1

N q

M i i

i

P f PE



  

(B11)

where

q = number of days of larval life, and

ˆi

f = estimated annual fraction of total larvae hatched during the ith survey period.

Formula (B11) is based on the total probability law where

    

1

.

N

i i

i

P A P A B P B



 

In the above example, the event A is larval survival and event B is hatching with P B

estimated by if where







i

i

T

E

f

E

 ,

where Ei = estimated entrainment for the ith survey period. Then based on the Delta method
Harbor Generating Station Appendix B2: Estimating Proportional

IM&E Final Report Entrainment and the ETM Calculations

B2-5

  









 

 

 



 



2

2

2 2

( )

( ) ( ) (1 ) .

i

i

T

i

N

i j

j i

i T

i i

i T

E

Var f Var

E

E

Var

E E

Var E Var E f f

E E



 

  

 

 

 

  

 

    

 

    

 



The estimates of PEiand i

f and their respective variance estimates can be combined in an

estimate of the variance for PMfollowing the Delta method (Seber 1982) for variance and

covariance as follows:

    

  

 

  

    

   



1

1

2

1

1 2

1

1

2

( ) 1 (1 )

(1 )

( )(1 )

( )( (1 ) )

2 cov , (1 ) (1 ) where

1

cov ,

N

q

M i i

i

N

q

i i

i

N

q

i i

i

N

q

i

i i

i

N N

q q

i j j i

i j i

i j i j

T

Var P Var f PE

Var f PE

Var f PE

Var PE f q PE

f f PE PE

f f f f Var E

E











 

       

       

     

     

  

 

   











      

,

1 1 .

N

g i j i j j i

g i j

f f E f f E



   

      

   


Harbor Generating Station

IM&E Final Report Appendix B3: Demographic Model Calculations

B3-1

Appendix B3

Demographic Model Calculations

Fecundity Hindcasting (FH)

The estimated total larval entrainment for a species ( ET) was used to estimate the number of

breeding females needed to produce the number of larvae entrained. The estimated number of

breeding females ( FH ) whose fecundity was equal to the estimated total loss of entrained larvae

is calculated as follows:







1

T

n

i

i

E

FH

TLF S





 (C1)

where





number of larval stages vulnerable to entrainment,

estimated total entrainment,

survival rate from eggs to larvae of the th stage, and

estimated total life time fecundity for females, e

T

i

n

E

S i

TLF







 quivalent to the average number of

eggs spawned per female over their reproductive years.

Equation C1 is based on the simplified case of a single synchronized spawning by a species. For

species with overlapping or continuous spawning, larval abundance would have to be specified

by week and age class (i.e., Eij ). However, we used the mean size of all larvae entrained to

estimate a representative age of larvae, and then estimated a survival rate to this representative

age. Two input parameters in Equation C1 that may not be available for many species, and thus

may limit the method, are lifetime fecundity (TLF ) and survival rates ( Si) from spawning to

entrainment.

In practice, survival was estimated by either one or several age classes, depending on the data

source, to the estimated age at entrainment. The expected total lifetime fecundity E TLF ( ) was

approximated by modeling a linear survivorship for a female once she reached the age of

maturity, and using a constant number of eggs produced per year.
Harbor Generating Station

IM&E Final Report Appendix B3: Demographic Model Calculations

B3-2

The number of eggs produced per year was approximated as the average number of eggs per

year. Thus

 ( )

2

L

M

L

M

A

A

A

L

A L M

L M

TLF F A s A dA

A A F dA

A A

A A F



 



       





where

s A= survivorship of a female;

F A= eggs produced;

AM = age of maturity; and

AL = age at death.

In other words,

0

0.5

1

0 1 2 3 4 5 6 7

A (Age)

S

urviv

ors

hip

s(A)

AM AL
Harbor Generating Station

IM&E Final Report Appendix B3: Demographic Model Calculations

B3-3

 Estimated Total Lifetime Fecundity

= Average eggs/year Average number of years of reproductive life

Longevity - Age at maturation Average eggs/year .

2

TLF 



      

(C2)

The expected length of reproductive life was approximated as the midpoint between the times of

maturation and longevity. The approximation of linear survivorship between these events implies

uniform survival. For exploited species such as northern anchovy and sardine, the expected

number of years of reproductive life may be much less than predicted using this assumption.

Simulation, comparing exponential survival, shows that the calculation of TLF  will be

negatively biased for species with short reproductive lifespans, and positively biased for those

with longer durations.

The variance of FH was approximated by the Delta method (Seber 1982):

   2 2 2 2  

      2

1

( ) ( ) ( ) ( ) ( ) ˆ

( )

n

L M

T j

j L m

Var A Var A

Var FH FH CV E CV S CV F

 A A

   

     



  



where





CV( )= CV of estimated entrainment (estim ˆ ated by CV(I) when available),

CV( ) = CV of estimated survival of eggs and larvae up to entrainment,

CV( ) = CV of estimated average annual fecundity,

= a

T

j

M

E

S

F

A



ge at maturation, and

= age at maturity. AL

The behavior of the estimator for FH appears log-linear, suggesting that an approximate

confidence interval can be based on the assumptions that ln( FH ) is normally distributed and

uses the pivotal quantity



 

 2

ln ln

.

( )

FH FH Z

Var FH

FH

 
Harbor Generating Station

IM&E Final Report Appendix B3: Demographic Model Calculations

B3-4

A 90% confidence interval for FH was estimated by solving for FH and setting Z equal to

+/-1.645, i.e.



 

 

 

2 2 

( ) ( ) 1.645 1.645

to .

Var FH Var FH

FH FH FH e FH e

 

 

Adult Equivalent Loss (AEL)

The AEL approach uses estimates of the abundance of entrained or impinged organisms to

forecast the loss of equivalent numbers of adults. Starting with the number of age class j larvae

entrained ( Ej), it is conceptually easy to convert these numbers to an equivalent number of

adults lost ( AEL  ) at some specified age class from the formula:

  

1

n

j j

j

AEL E S



 (C3)

where





number of age classes,

estimated number of larvae lost in age class , and

survival rate for the th age class to adulthood (Goodyear 1978).

j

j

n

E j

S j







Age-specific survival rates from larval stage to recruitment into the fishery (through juvenile and

early adult stages) must be included in this assessment method. For some commercial species,

survival rates are known for adults in the fishery; but for most species, age-specific larval

survivorship has not been well described.

When age-specific survival rates from larval stage to recruitment into the fishery were available,

AEL was calculated using survival from a representative age of the entrained larvae at HGS. This

age was calculated by dividing the average larval length at entrainment (minus hatch length) by a

literature-based growth rate. Age-specific survivorship for any interval of time (t) was then

calculated following the formula (Ricker 1975)

0

Nt Zt

e

N

 

where
Harbor Generating Station

IM&E Final Report Appendix B3: Demographic Model Calculations

B3-5

0

0

number of animals in the population at time ,

number of animals in the population at time 0,

(finite survivorship to time ),

2.71828...(base of the natural log), and

instantaneou

t

t

N t

N t

N

S t

N

e

Z



 





 s mortality rate.

Survivorship to recruitment, to an adult age, was apportioned into several age stages, and AEL

was calculated using the total entrainment as

 

1

ˆ

n

T j

j

AEL E S



  (C4)

where



number of age classes from entrainment to recruitment and

survival rate from the beginning to end of the th age class. j

n

S j





The variance of AEL  can be estimated using a Taylor series approximation (Delta method of

Seber 1982) as

   2

2 2 

1

( ) ( ) ( ) ˆ

n

T j

j

Var AEL AEL CV E CV S



     

 

 . (C5)

An alternative analysis would be to compare AEL  with the size of the adult population of

interest or with fishery harvest data. This method converts numbers of adult losses into fractional

loss of the population of interest (e.g., stock assessment). However, information describing adult

stocks is limited for many species, and independent field estimates of survival from time of

entrainment to adulthood are not available for some species. For some species where such

information is unavailable, we can estimate this parameter by assuming a stationary population

where an adult female must produce two adults (i.e., one male and one female). Overall survival

( ) TS can then be estimated from total lifetime fecundity (TLF ) by the quantity





2 ˆ ˆ ˆ ,

T egg larvae adult S S S S

TLF

   

which leads to



ˆ 2

.

adult ˆ ˆ egg larvae

S

TLF S S



  (C6)

Substituting Equation 11 into the overall form of the AEL equation where
Harbor Generating Station

IM&E Final Report Appendix B3: Demographic Model Calculations

B3-6

 ˆ ˆ AEL E S  T adult  (C7)

yields



  

2( ) ˆT

egg larva

E

AEL

S S TLF



 

where

AEL FH  2 .

(C8)

Without independent adult survival rates and assuming a 50:50 sex ratio, AEL  and FH are

deterministically related according to Equation 13, with an associated standard error of

SE AEL SE FH  ( ) 2 ( ).     Equation 13 should be aligned so that the average female age is also the

age of recruitment used in computing AEL  . This alignment is accomplished by solving the

simple exponential survival equation (Ricker 1975)

0

( )

0

Z t t N N e t   

by substituting numbers of either equivalent adults or hindcast females, their associated ages, and

mortality rates into the equation where,

0 0

number of adults at time ,

number of adults at time ,

instantaneous rate of natural mortality, and

age of hindcast animals ( ) or extrapolated age of animals ( ).

N t t

N t

Z

t FH AEL









This allows for the alignment of ages in either direction such that 2FH AEL  since they are

either hindcast or extrapolated to the same age.

The estimates of mortality calculated from the AEL and FH approaches can be compared for the

same time periods for taxa where independent estimates are available for (1) survival from

entrainment to recruitment into the fishery and (2) entrainment back to hatching. These

comparisons serve as a method of cross-validation for the demographic approaches to impact

assessment.
Harbor Generating Station

IM&E Final Report Appendix B3: Demographic Model Calculations

B3-7

Literature Cited

Goodyear, C. P. 1978. Entrainment impact estimates using the equivalent adult approach. United

States Fish and Wildlife Service, FWS/OBS-78/65, Ann Arbor, MI.

Ricker, W. E. 1975. Computation and interpretation of biological statistics of fish populations.

Fish. Res. Board of Canada Bull. 91. 382 pp.

Seber, G. A. F. 1982. The Estimation of Animal Abundance and Related Parameters. McMillan.

London. 654 p.
Harbor Generating Station

Appendix C

Entrainment Data

C1. Entrainment Data by Survey

C2. Calculated Total Annual Entrainment and Standard

Error Data
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-1

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA01

Start Date: 1/10/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 244 390.33

Acanthogobius flavimanus yellowfin goby 130 204.34

Genyonemus lineatus white croaker 104 171.09

Lepidogobius lepidus bay goby 18 28.33

Sciaenidae unid. croakers 16 25.83

larval fish fragment unidentified larval fishes 12 19.76

Gillichthys mirabilis longjaw mudsucker 11 18.57

Clinocottus analis wooly sculpin 9 15.22

Paralichthys californicus California halibut 2 3.40

Pleuronichthys guttulatus diamond turbot 2 3.35

Hypsoblennius spp. combtooth blennies 2 2.90

Gibbonsia spp. clinid kelpfishes 1 2.05

Leptocottus armatus Pacific staghorn sculpin 1 1.92

larval/post-larval fish unid. larval fishes 1 1.71

Gobiesox spp. clingfishes 1 1.68

Gobiesocidae unid. clingfishes 1 1.48

Total Fishes: 555

Eggs

Genyonemus lineatus (eggs) white croaker eggs 262 447.99

Citharichthys spp. (eggs) sanddab eggs 71 111.95

Paralichthys californicus (eggs) California halibut eggs 37 60.27

fish eggs unid. unidentified fish eggs 15 26.08

Pleuronichthys spp. (eggs) turbot eggs 10 17.14

Total Eggs: 395

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 15 24.73

Pinnixa spp. (megalops) pea crabs megalops 3 4.45

Grapsidae unid. (megalops) shore crab megalops 1 1.75

Total Target Invertebrates: 19
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-2

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA02

Start Date: 1/23/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 154 368.16

Acanthogobius flavimanus yellowfin goby 144 342.99

Genyonemus lineatus white croaker 19 46.96

Lepidogobius lepidus bay goby 8 20.70

Sciaenidae unid. croakers 2 5.16

Gobiesox spp. clingfishes 1 3.14

larval/post-larval fish unid. larval fishes 1 3.14

larval fish fragment unidentified larval fishes 1 3.05

Paralichthys californicus California halibut 1 2.58

Pleuronichthys guttulatus diamond turbot 1 2.58

Ruscarius creaseri roughcheek sculpin 1 2.58

Total Fishes: 333

Eggs

Genyonemus lineatus (eggs) white croaker eggs 498 1,306.88

fish eggs unid. unidentified fish eggs 128 324.39

Paralichthys californicus (eggs) California halibut eggs 25 59.09

Pleuronichthys spp. (eggs) turbot eggs 12 28.85

Paralichthyidae unid. (eggs) sand flounder eggs 8 20.68

Citharichthys spp. (eggs) sanddab eggs 7 15.85

Total Eggs: 678

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 7 18.51

unidentified crab (megalops) unidentified crab megalops 4 8.87

Pinnixa spp. (megalops) pea crabs megalops 1 2.86

Total Target Invertebrates: 12
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-3

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA02

Start Date: 1/23/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 83 145.43

Genyonemus lineatus white croaker 88 138.63

Acanthogobius flavimanus yellowfin goby 77 119.88

Lepidogobius lepidus bay goby 74 117.32

Sciaenidae unid. croakers 7 9.51

Ruscarius creaseri roughcheek sculpin 5 8.66

Clinocottus analis wooly sculpin 4 6.51

larval/post-larval fish unid. larval fishes 3 5.51

Icelinus spp. sculpins 3 4.69

Myctophidae unid. lanternfishes 2 3.79

Hypsoblennius spp. combtooth blennies 2 3.26

larval fish fragment unidentified larval fishes 2 3.12

Pleuronichthys guttulatus diamond turbot 1 1.89

Sebastes spp. rockfishes 1 1.89

Merluccius productus Pacific hake 1 1.41

Engraulis mordax northern anchovy 1 1.36

Paralichthys californicus California halibut 1 1.36

Gibbonsia spp. clinid kelpfishes 1 1.32

Total Fishes: 356

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 95 150.17

Pinnixa spp. (megalops) pea crabs megalops 9 13.57

unidentified crab (megalops) unidentified crab megalops 8 12.80

Hemigrapsus spp. (megalops) shore crab megalops 1 1.41

Loligo opalescens market squid 1 1.36

Grapsidae unid. (megalops) shore crab megalops 1 1.32

Total Target Invertebrates: 115
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-4

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA02

Start Date: 1/23/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 37 195.04

Gobiidae unid. gobies 9 46.05

Ruscarius creaseri roughcheek sculpin 3 18.06

Atherinopsis californiensis jacksmelt 3 12.94

Acanthogobius flavimanus yellowfin goby 2 12.48

Pleuronichthys guttulatus diamond turbot 2 8.98

Lepidogobius lepidus bay goby 1 7.86

Paralichthys californicus California halibut 1 7.86

Clinocottus analis wooly sculpin 1 6.24

Orthonopias triacis snubnose sculpin 1 5.02

Stenobrachius leucopsarus northern lampfish 1 5.02

Atherinops affinis topsmelt 1 3.96

Sciaenidae unid. croakers 1 3.96

Total Fishes: 63

Target Invertebrates

Loligo opalescens market squid 12 62.89

Pugettia spp. (megalops) kelp crabs megalops 5 32.56

Total Target Invertebrates: 17
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-5

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA02

Start Date: 1/23/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 163 408.08

Gobiidae unid. gobies 19 42.83

Lepidogobius lepidus bay goby 18 42.56

Sciaenidae unid. croakers 13 27.77

Paralichthys californicus California halibut 8 23.90

Ruscarius creaseri roughcheek sculpin 6 14.61

larval fish fragment unidentified larval fishes 5 13.41

Stichaeidae unid. pricklebacks 2 5.33

Clinocottus analis wooly sculpin 1 3.35

Gibbonsia spp. clinid kelpfishes 1 3.35

Scorpaenichthys marmoratus cabezon 1 3.35

Rhinogobiops nicholsi blackeye goby 1 3.06

Atherinopsis californiensis jacksmelt 1 2.43

Pleuronichthys guttulatus diamond turbot 1 2.43

Stenobrachius leucopsarus northern lampfish 1 2.43

Hypsoblennius spp. combtooth blennies 1 2.27

Gobiesox spp. clingfishes 1 2.17

Zaniolepis spp. combfishes 1 2.17

Citharichthys sordidus Pacific sanddab 1 1.80

larval/post-larval fish unid. larval fishes 1 1.80

Total Fishes: 246

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 57 124.15

Loligo opalescens market squid 14 36.75

unidentified crab (megalops) unidentified crab megalops 8 17.35

Pinnixa spp. (megalops) pea crabs megalops 7 17.03

Paguridae unid. (megalops) hermit crab megalops 1 2.27

Porcellanidae unid. (megalops) porcelain crab megalops 1 2.27

Total Target Invertebrates: 88
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-6

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA03

Start Date: 2/7/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Acanthogobius flavimanus yellowfin goby 376 1,022.76

Gobiidae unid. gobies 308 841.71

Genyonemus lineatus white croaker 161 448.72

Lepidogobius lepidus bay goby 35 95.48

Paralichthys californicus California halibut 7 18.13

Gillichthys mirabilis longjaw mudsucker 5 13.84

Paraclinus spp. clinid 3 8.94

Gobiesox spp. clingfishes 3 7.99

Sciaenidae unid. croakers 1 2.98

Citharichthys sordidus Pacific sanddab 1 2.88

Hypsoblennius spp. combtooth blennies 1 2.78

larval fish fragment unidentified larval fishes 1 2.66

larval/post-larval fish unid. larval fishes 1 2.55

Clinocottus analis wooly sculpin 1 2.30

Total Fishes: 904

Eggs

Genyonemus lineatus (eggs) white croaker eggs 532 1,492.88

fish eggs unid. unidentified fish eggs 117 318.61

Paralichthys californicus (eggs) California halibut eggs 77 223.82

Pleuronichthys spp. (eggs) turbot eggs 20 54.95

Citharichthys spp. (eggs) sanddab eggs 7 19.61

Paralichthyidae unid. (eggs) sand flounder eggs 5 17.08

Total Eggs: 758

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 115 326.08

Pinnixa spp. (megalops) pea crabs megalops 6 17.25

Majidae unid. (megalops) spider crab megalops 5 14.80

unidentified crab (megalops) unidentified crab megalops 5 12.80

Paguridae unid. (megalops) hermit crab megalops 1 3.12

Total Target Invertebrates: 132
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-7

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA04

Start Date: 2/21/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Acanthogobius flavimanus yellowfin goby 125 360.91

Genyonemus lineatus white croaker 92 284.52

Gobiidae unid. gobies 31 101.10

Lepidogobius lepidus bay goby 10 30.39

larvae, unidentified yolksac unidentified yolksac larvae 7 25.00

larval fish fragment unidentified larval fishes 6 20.31

Citharichthys stigmaeus speckled sanddab 2 7.42

Sciaenidae unid. croakers 2 7.42

Rhinogobiops nicholsi blackeye goby 2 6.69

Pleuronectiformes unid. flatfishes 2 6.60

Paralichthys californicus California halibut 2 6.50

Ruscarius creaseri roughcheek sculpin 2 5.79

Gobiesox spp. clingfishes 1 5.48

Total Fishes: 284

Eggs

fish eggs unid. unidentified fish eggs 1,263 3,764.61

Genyonemus lineatus (eggs) white croaker eggs 975 3,137.41

Paralichthyidae unid. (eggs) sand flounder eggs 82 266.29

Citharichthys spp. (eggs) sanddab eggs 29 98.06

Pleuronichthys spp. (eggs) turbot eggs 7 24.55

Engraulidae unid. (eggs) anchovy eggs 6 17.36

Total Eggs: 2,362

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 55 183.51

Majidae unid. (megalops) spider crab megalops 5 16.01

Pinnixa spp. (megalops) pea crabs megalops 5 13.88

unidentified crab (megalops) unidentified crab megalops 2 6.93

Grapsidae unid. (megalops) shore crab megalops 1 3.71

Total Target Invertebrates: 68
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-8

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA04

Start Date: 2/21/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 206 338.62

Acanthogobius flavimanus yellowfin goby 216 316.14

Gobiidae unid. gobies 55 91.04

larval fish fragment unidentified larval fishes 31 51.83

Lepidogobius lepidus bay goby 27 43.32

larvae, unidentified yolksac unidentified yolksac larvae 13 22.39

Sciaenidae unid. croakers 12 20.84

Hypsoblennius spp. combtooth blennies 7 12.24

Ruscarius creaseri roughcheek sculpin 4 6.83

Cottidae unid. sculpins 4 6.37

Paralichthys californicus California halibut 3 4.88

Bathymasteridae unid. ronquils 2 3.38

larval/post-larval fish unid. larval fishes 1 1.70

Atherinops affinis topsmelt 1 1.63

Citharichthys sordidus Pacific sanddab 1 1.63

Pleuronichthys guttulatus diamond turbot 1 1.63

Stenobrachius leucopsarus northern lampfish 1 1.63

Merluccius productus Pacific hake 1 1.51

Rhinogobiops nicholsi blackeye goby 1 1.51

Total Fishes: 587

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 92 150.82

Pinnixa spp. (megalops) pea crabs megalops 10 17.19

Hemigrapsus spp. (megalops) shore crab megalops 8 13.97

Majidae unid. (megalops) spider crab megalops 5 8.29

unidentified crab (megalops) unidentified crab megalops 4 5.53

Total Target Invertebrates: 119
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-9

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA04

Start Date: 2/21/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 107 497.93

Gobiidae unid. gobies 14 61.98

larval fish fragment unidentified larval fishes 7 32.53

larvae, unidentified yolksac unidentified yolksac larvae 4 23.35

Acanthogobius flavimanus yellowfin goby 4 11.06

Bathymasteridae unid. ronquils 2 9.50

Clinocottus analis wooly sculpin 1 6.73

larval fish - damaged unidentified larval fishes 1 6.73

Rhinogobiops nicholsi blackeye goby 1 5.84

Cottidae unid. sculpins 1 5.11

Paralichthys californicus California halibut 1 5.11

Sciaenidae unid. croakers 1 5.11

Artedius lateralis smoothhead sculpin 1 2.76

Chaenopsidae unid. tube blennies 1 2.76

Total Fishes: 146

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 14 59.07

Pinnixa spp. (megalops) pea crabs megalops 10 39.36

Majidae unid. (megalops) spider crab megalops 4 11.06

Total Target Invertebrates: 28
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-10

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA04

Start Date: 2/21/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 162 448.08

larval fish fragment unidentified larval fishes 42 120.28

Ruscarius creaseri roughcheek sculpin 10 26.89

Lepidogobius lepidus bay goby 11 25.04

Gobiidae unid. gobies 9 24.15

larvae, unidentified yolksac unidentified yolksac larvae 8 21.33

Rhinogobiops nicholsi blackeye goby 7 19.82

Bathymasteridae unid. ronquils 6 16.26

Cottidae unid. sculpins 6 15.68

Zaniolepis frenata shortspine combfish 4 11.93

Labrisomidae unid. labrisomid blennies 2 5.74

Sebastes spp. rockfishes 2 5.09

Hypsoblennius spp. combtooth blennies 2 4.97

Sciaenidae unid. croakers 2 4.39

Artedius harringtoni scalyhead sculpin 1 4.04

Seriphus politus queenfish 1 4.04

Orthonopias triacis snubnose sculpin 1 2.99

Acanthogobius flavimanus yellowfin goby 1 2.92

Gillichthys mirabilis longjaw mudsucker 1 2.75

Oligocottus spp. sculpins 1 2.75

Stenobrachius leucopsarus northern lampfish 1 2.75

Chaenopsidae unid. tube blennies 1 2.48

Gobiesox spp. clingfishes 1 2.48

Pleuronichthys guttulatus diamond turbot 1 2.48

larval/post-larval fish unid. larval fishes 1 2.17

Clinocottus analis wooly sculpin 1 1.91

Total Fishes: 285

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 24 69.16

Pinnixa spp. (megalops) pea crabs megalops 8 17.22

unidentified crab (megalops) unidentified crab megalops 5 13.57

Paguridae unid. (megalops) hermit crab megalops 3 8.76

Majidae unid. (megalops) spider crab megalops 2 4.39

Total Target Invertebrates: 42
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-11

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA05

Start Date: 3/8/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Acanthogobius flavimanus yellowfin goby 1,121 4,384.63

Gobiidae unid. gobies 321 1,145.63

Genyonemus lineatus white croaker 83 316.93

Lepidogobius lepidus bay goby 11 37.82

larval fish fragment unidentified larval fishes 6 16.34

Gobiesox spp. clingfishes 3 13.03

Gillichthys mirabilis longjaw mudsucker 4 10.59

Gibbonsia spp. clinid kelpfishes 1 7.50

Leptocottus armatus Pacific staghorn sculpin 1 7.50

larval fish - damaged unidentified larval fishes 2 6.78

larvae, unidentified yolksac unidentified yolksac larvae 2 5.82

Bathymasteridae unid. ronquils 1 2.73

Paralichthys californicus California halibut 1 2.65

Total Fishes: 1,557

Eggs

Sciaenidae unid. (eggs) croaker eggs 680 2,057.21

fish eggs unid. unidentified fish eggs 531 1,538.01

Genyonemus lineatus (eggs) white croaker eggs 293 925.62

Paralichthyidae unid. (eggs) sand flounder eggs 214 612.63

Citharichthys spp. (eggs) sanddab eggs 80 240.99

Pleuronichthys spp. (eggs) turbot eggs 19 59.95

Engraulidae unid. (eggs) anchovy eggs 3 10.22

Total Eggs: 1,820

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 57 169.02

Pinnixa spp. (megalops) pea crabs megalops 7 19.59

unidentified crab (megalops) unidentified crab megalops 7 19.16

Majidae unid. (megalops) spider crab megalops 3 9.50

Pachygrapsus crassipes (megalops) striped shore crab megalops 1 2.91

Hemigrapsus nudus (megalops) purple shore crab megalops 1 2.88

Total Target Invertebrates: 76
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-12

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA06

Start Date: 3/20/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 199 630.28

Acanthogobius flavimanus yellowfin goby 76 246.51

Genyonemus lineatus white croaker 21 71.36

Engraulis mordax northern anchovy 9 28.23

Lepidogobius lepidus bay goby 9 25.18

Leptocottus armatus Pacific staghorn sculpin 5 16.17

Sciaenidae unid. croakers 2 6.76

Orthonopias triacis snubnose sculpin 2 6.09

Gillichthys mirabilis longjaw mudsucker 2 5.96

Icelinus spp. sculpins 2 5.96

Merluccius productus Pacific hake 1 3.71

Gobiesox spp. clingfishes 1 3.59

larvae, unidentified yolksac unidentified yolksac larvae 1 3.17

Cottidae unid. sculpins 1 2.38

Total Fishes: 331

Eggs

fish eggs unid. unidentified fish eggs 686 2,244.82

Sciaen. / Paralich. / Labridae (eggs) fish eggs 220 699.98

Sciaenidae unid. (eggs) croaker eggs 47 175.54

Pleuronichthys spp. (eggs) turbot eggs 8 25.40

Paralichthyidae unid. (eggs) sand flounder eggs 5 18.61

Engraulidae unid. (eggs) anchovy eggs 2 6.60

Total Eggs: 968

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 38 129.42

Majidae unid. (megalops) spider crab megalops 6 20.43

Pinnixa spp. (megalops) pea crabs megalops 5 17.99

Hemigrapsus spp. (megalops) shore crab megalops 1 3.59

Loligo opalescens market squid 1 3.59

Total Target Invertebrates: 51
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-13

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA06

Start Date: 3/20/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 114 246.36

Genyonemus lineatus white croaker 64 132.25

Acanthogobius flavimanus yellowfin goby 45 97.88

Lepidogobius lepidus bay goby 23 44.95

larval fish - damaged unidentified larval fishes 8 17.61

Engraulis mordax northern anchovy 6 13.42

Sciaenidae unid. croakers 5 10.73

Gobiesox spp. clingfishes 4 8.62

Engraulidae unid. anchovies 4 7.64

Icelinus spp. sculpins 3 7.13

Stenobrachius leucopsarus northern lampfish 3 6.66

larval fish fragment unidentified larval fishes 3 5.67

Cottidae unid. sculpins 3 5.62

Bathymasteridae unid. ronquils 2 3.62

Clinocottus analis wooly sculpin 2 3.11

Bathylagus ochotensis popeye blacksmelt 1 2.37

Sebastes spp. rockfishes 1 2.37

Myctophidae unid. lanternfishes 1 2.34

Parophrys vetulus English sole 1 2.26

Ruscarius creaseri roughcheek sculpin 1 2.26

Chaenopsidae unid. tube blennies 1 2.10

Pleuronectiformes unid. flatfishes 1 2.05

Atherinopsidae unid. silversides 1 1.52

larvae, unidentified yolksac unidentified yolksac larvae 1 1.52

Typhlogobius californiensis blind goby 1 1.52

Total Fishes: 299

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 66 135.94

Majidae unid. (megalops) spider crab megalops 28 56.55

Pinnixa spp. (megalops) pea crabs megalops 14 26.64

unidentified crab (megalops) unidentified crab megalops 5 10.23

Paguridae unid. (megalops) hermit crab megalops 3 6.19

Hemigrapsus spp. (megalops) shore crab megalops 2 3.88

Cancer gracilis (megalops) slender crab megalops 1 2.10

Diogenidae (megalops) left-handed hermit crabs 1 2.10

Loligo opalescens market squid 1 2.02

Total Target Invertebrates: 121
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-14

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA06

Start Date: 3/20/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 14 71.03

Genyonemus lineatus white croaker 13 68.95

Gobiesox spp. clingfishes 4 23.19

Icelinus spp. sculpins 3 17.36

Sciaenidae unid. croakers 3 13.76

Artedius lateralis smoothhead sculpin 2 13.40

Bathylagus ochotensis popeye blacksmelt 2 13.39

Pleuronectidae unid. righteye flounders 2 9.80

Lepidogobius lepidus bay goby 1 6.70

Parophrys vetulus English sole 1 6.70

Zaniolepis frenata shortspine combfish 1 6.70

Leuroglossus stilbius California smoothtongue 1 6.69

Clinocottus analis wooly sculpin 1 5.84

Gibbonsia spp. clinid kelpfishes 1 5.84

Orthonopias triacis snubnose sculpin 1 5.84

Acanthogobius flavimanus yellowfin goby 1 3.96

Engraulis mordax northern anchovy 1 3.96

Merluccius productus Pacific hake 1 3.96

Paralichthys californicus California halibut 1 3.96

Rhinogobiops nicholsi blackeye goby 1 3.96

Total Fishes: 55

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 14 79.52

Majidae unid. (megalops) spider crab megalops 10 45.25

Paguridae unid. (megalops) hermit crab megalops 3 17.35

Pinnixa spp. (megalops) pea crabs megalops 3 11.89

unidentified crab (megalops) unidentified crab megalops 1 6.70

Hemigrapsus spp. (megalops) shore crab megalops 1 3.96

Total Target Invertebrates: 32
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-15

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA06

Start Date: 3/20/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 185 544.92

Sciaenidae unid. croakers 50 147.45

Gobiidae unid. gobies 22 74.11

Stenobrachius leucopsarus northern lampfish 18 51.71

Sebastes spp. rockfishes 10 31.22

larval fish fragment unidentified larval fishes 11 30.44

Rhinogobiops nicholsi blackeye goby 7 22.37

larval fish - damaged unidentified larval fishes 7 19.39

Orthonopias triacis snubnose sculpin 5 16.11

Oxylebius pictus painted greenling 5 14.97

Lepidogobius lepidus bay goby 5 14.46

larvae, unidentified yolksac unidentified yolksac larvae 5 14.36

Pleuronectidae unid. righteye flounders 4 13.76

Artedius lateralis smoothhead sculpin 4 13.38

Ruscarius creaseri roughcheek sculpin 5 12.66

Cottidae unid. sculpins 4 12.48

Engraulis mordax northern anchovy 4 11.79

Hypsoblennius spp. combtooth blennies 3 10.62

Acanthogobius flavimanus yellowfin goby 3 10.10

Bathymasteridae unid. ronquils 3 9.20

Typhlogobius californiensis blind goby 3 8.82

Leuroglossus stilbius California smoothtongue 3 8.20

Clinocottus analis wooly sculpin 3 7.68

Parophrys vetulus English sole 2 7.67

Gibbonsia spp. clinid kelpfishes 2 6.84

Atherinopsis californiensis jacksmelt 3 6.77

Gobiesox spp. clingfishes 3 6.65

Icelinus spp. sculpins 2 6.33

Paralichthyidae unid. sand flounders 2 6.15

Labrisomidae unid. labrisomid blennies 1 3.84

Scorpaenichthys marmoratus cabezon 1 3.77

Diaphus theta California headlight fish 1 3.01

Zaniolepis frenata shortspine combfish 1 3.01

Citharichthys spp. sanddabs 1 2.56

larval/post-larval fish unid. larval fishes 1 2.56

Leuroglossus spp. smoothtongues 1 2.56

Paralichthys californicus California halibut 1 2.56

Bathylagus ochotensis popeye blacksmelt 1 2.43

Hexagrammidae unid. greenlings 1 2.43

Merluccius productus Pacific hake 1 1.66

Total Fishes: 394

(continued)
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-16

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA06

Start Date: 3/20/2006

Stations: H5-H6 (continued) Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 51 139.63

Majidae unid. (megalops) spider crab megalops 27 68.63

Paguridae unid. (megalops) hermit crab megalops 10 25.72

Pinnixa spp. (megalops) pea crabs megalops 3 8.84

Hemigrapsus spp. (megalops) shore crab megalops 3 7.81

Diogenidae (megalops) left-handed hermit crabs 2 4.74

Loligo opalescens market squid 1 2.43

Cancer productus (megalops) red rock crab megalops 1 1.66

Cancer spp. (megalops) cancer crabs megalops 1 1.66

Total Target Invertebrates: 99
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-17

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA07

Start Date: 4/3/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 583 1,752.83

Genyonemus lineatus white croaker 271 813.48

Acanthogobius flavimanus yellowfin goby 76 215.63

Sciaenidae unid. croakers 25 76.62

Lepidogobius lepidus bay goby 11 32.91

larval fish fragment unidentified larval fishes 9 29.32

larvae, unidentified yolksac unidentified yolksac larvae 7 20.44

larval fish - damaged unidentified larval fishes 3 10.56

Gibbonsia spp. clinid kelpfishes 2 6.24

Sardinops sagax Pacific sardine 2 5.23

Gillichthys mirabilis longjaw mudsucker 2 5.10

Girella nigricans opaleye 1 3.49

Icelinus spp. sculpins 1 3.48

Clupeidae unid. herrings 1 3.12

Hypsoblennius spp. combtooth blennies 1 3.12

Engraulidae unid. anchovies 1 2.11

Engraulis mordax northern anchovy 1 2.11

Gobiesox spp. clingfishes 1 2.11

Total Fishes: 998

Eggs

fish eggs unid. unidentified fish eggs 782 2,335.47

Paralichthyidae unid. (eggs) sand flounder eggs 581 1,779.17

Sciaenidae unid. (eggs) croaker eggs 519 1,600.91

Pleuronichthys spp. (eggs) turbot eggs 24 73.85

Citharichthys spp. (eggs) sanddab eggs 5 15.77

Engraulidae unid. (eggs) anchovy eggs 5 15.48

Total Eggs: 1,916

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 34 103.22

Pinnixa spp. (megalops) pea crabs megalops 22 51.77

Paguridae unid. (megalops) hermit crab megalops 6 20.64

Hemigrapsus spp. (megalops) shore crab megalops 6 18.75

Pinnotheres spp. (megalops) pea crab megalops 3 8.43

Majidae unid. (megalops) spider crab megalops 2 6.69

Diogenidae (megalops) left-handed hermit crabs 1 3.49

unidentified crab (megalops) unidentified crab megalops 1 3.49

Loligo opalescens market squid 1 2.11

Total Target Invertebrates: 76
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-18

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA08

Start Date: 4/17/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m

3

)

Fishes

Gobiidae unid. gobies 346 1,057.06

Genyonemus lineatus white croaker 114 342.73

Lepidogobius lepidus bay goby 23 69.22

Engraulis mordax northern anchovy 15 44.21

Sciaenidae unid. croakers 10 32.48

Gillichthys mirabilis longjaw mudsucker 5 14.47

Icelinus spp. sculpins 5 13.25

Icelinus quadriseriatus yellowchin sculpin 4 11.08

larval fish fragment unidentified larval fishes 3 9.46

Hypsoblennius spp. combtooth blennies 3 7.83

Gobiesox spp. clingfishes 2 6.24

larval fish - damaged unidentified larval fishes 2 6.03

Paralichthys californicus California halibut 2 5.89

larvae, unidentified yolksac unidentified yolksac larvae 2 5.63

Leptocottus armatus Pacific staghorn sculpin 1 3.81

Pleuronichthys verticalis hornyhead turbot 1 3.42

Acanthogobius flavimanus yellowfin goby 1 3.05

Pleuronectidae unid. righteye flounders 1 3.05

Bathylagus ochotensis popeye blacksmelt 1 2.61

Total Fishes: 541

Eggs

fish eggs unid. unidentified fish eggs 751 2,262.31

Sciaenidae unid. (eggs) croaker eggs 632 1,901.23

Paralichthyidae unid. (eggs) sand flounder eggs 154 457.96

Pleuronichthys spp. (eggs) turbot eggs 8 22.14

Engraulidae unid. (eggs) anchovy eggs 3 8.26

Citharichthys spp. (eggs) sanddab eggs 2 5.89

Total Eggs: 1,550

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 90 261.39

Pinnixa spp. (megalops) pea crabs megalops 40 116.01

Majidae unid. (megalops) spider crab megalops 21 61.93

Paguridae unid. (megalops) hermit crab megalops 8 24.25

Grapsidae unid. (megalops) shore crab megalops 2 6.42

Cancer antennarius (megalops) brown rock crab megalops 2 6.15

Loligo opalescens market squid 2 5.42

Hemigrapsus spp. (megalops) shore crab megalops 1 2.82

unidentified crab (megalops) unidentified crab megalops 1 2.61

Total Target Invertebrates: 167
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-19

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA08

Start Date: 4/17/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 560 1,006.34

Gobiidae unid. gobies 167 318.25

Engraulidae unid. anchovies 27 52.48

Sciaenidae unid. croakers 20 36.32

Engraulis mordax northern anchovy 19 36.01

Gillichthys mirabilis longjaw mudsucker 16 30.94

Hypsoblennius spp. combtooth blennies 14 21.64

Chitonotus / Icelinus sculpins 9 18.17

Gobiesox spp. clingfishes 10 16.24

Bathymasteridae unid. ronquils 4 8.72

Parophrys vetulus English sole 4 8.45

Atherinopsidae unid. silversides 3 6.01

Icelinus quadriseriatus yellowchin sculpin 3 5.29

Seriphus politus queenfish 2 3.17

Paralichthys californicus California halibut 1 2.37

Pleuronectidae unid. righteye flounders 1 2.37

Merluccius productus Pacific hake 1 1.97

Pleuronectiformes unid. flatfishes 1 1.92

Pleuronichthys spp. turbots 1 1.82

Lyopsetta exilis slender sole 1 1.66

Orthonopias triacis snubnose sculpin 1 1.66

Chitonotus pugetensis roughback sculpin 1 1.54

Sebastes spp. rockfishes 1 1.21

Total Fishes: 867

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 180 310.24

Pinnixa spp. (megalops) pea crabs megalops 106 171.38

Majidae unid. (megalops) spider crab megalops 43 76.85

Paguridae unid. (megalops) hermit crab megalops 18 29.93

Grapsidae unid. (megalops) shore crab megalops 15 25.62

Cancer antennarius (megalops) brown rock crab megalops 11 23.11

unidentified crab (megalops) unidentified crab megalops 9 17.66

Pinnotheres spp. (megalops) pea crab megalops 8 13.45

Loligo opalescens market squid 6 11.03

Lophopanopeus spp. (megalops) black-clawed crab megalops 2 4.73

Brachyura unid. (megalops) unidentified crab megalops 1 1.92

Hemigrapsus spp. (megalops) shore crab megalops 1 1.92

Cancer anthonyi (megalops) yellow crab megalops 1 1.55

Cancer spp. (megalops) cancer crabs megalops 1 1.54

Total Target Invertebrates: 402
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-20

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA08

Start Date: 4/17/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 242 1,445.78

Gobiidae unid. gobies 32 193.23

Engraulidae unid. anchovies 20 117.94

Engraulis mordax northern anchovy 6 38.41

Sciaenidae unid. croakers 5 31.72

Parophrys vetulus English sole 3 20.41

Artedius lateralis smoothhead sculpin 2 13.72

Cottidae unid. sculpins 2 12.37

Stenobrachius leucopsarus northern lampfish 2 11.36

Lyopsetta exilis slender sole 1 7.03

Atherinops affinis topsmelt 1 5.68

Bathymasteridae unid. ronquils 1 5.68

Hypsoblennius spp. combtooth blennies 1 5.68

Merluccius productus Pacific hake 1 4.62

Total Fishes: 319

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 145 874.41

Pinnixa spp. (megalops) pea crabs megalops 51 278.59

Cancer antennarius (megalops) brown rock crab megalops 36 232.16

Majidae unid. (megalops) spider crab megalops 20 131.31

Grapsidae unid. (megalops) shore crab megalops 11 70.47

unidentified crab (megalops) unidentified crab megalops 9 48.49

Brachyura unid. (megalops) unidentified crab megalops 7 34.43

Loligo opalescens market squid 6 33.94

Paguridae unid. (megalops) hermit crab megalops 5 28.99

Cancer anthonyi (megalops) yellow crab megalops 3 13.87

Hemigrapsus spp. (megalops) shore crab megalops 2 13.72

Pinnotheres spp. (megalops) pea crab megalops 2 11.65

Lophopanopeus spp. (megalops) black-clawed crab megalops 2 9.25

Diogenidae (megalops) left-handed hermit crabs 1 6.69

Pachycheles rudis (megalops) thickclaw porcelain crab 1 4.62

Total Target Invertebrates: 301
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-21

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA08

Start Date: 4/17/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 1,165 2,619.09

Engraulidae unid. anchovies 220 385.41

Sciaenidae unid. croakers 62 166.12

Gobiidae unid. gobies 42 97.23

Orthonopias triacis snubnose sculpin 26 73.81

Engraulis mordax northern anchovy 21 53.38

Parophrys vetulus English sole 16 40.66

Ruscarius creaseri roughcheek sculpin 14 33.10

Hypsoblennius spp. combtooth blennies 14 29.92

Artedius lateralis smoothhead sculpin 9 26.01

Bathymasteridae unid. ronquils 10 23.49

larval fish - damaged unidentified larval fishes 9 23.33

Gillichthys mirabilis longjaw mudsucker 8 15.37

Seriphus politus queenfish 6 14.31

Paralichthys californicus California halibut 5 13.67

larval fish fragment unidentified larval fishes 7 13.05

Merluccius productus Pacific hake 4 10.80

Clinocottus analis wooly sculpin 4 10.44

Gobiesox spp. clingfishes 4 9.87

Pleuronichthys verticalis hornyhead turbot 4 9.31

Pleuronichthys spp. turbots 4 9.29

Stenobrachius leucopsarus northern lampfish 4 8.87

larvae, unidentified yolksac unidentified yolksac larvae 3 8.68

Oligocottus / Clinocottus sculpins 3 8.59

Leuroglossus stilbius California smoothtongue 3 8.45

Chitonotus / Icelinus sculpins 3 8.11

Cottidae unid. sculpins 3 6.83

Labrisomidae unid. labrisomid blennies 3 6.54

Zaniolepis spp. combfishes 2 5.76

Rhinogobiops nicholsi blackeye goby 2 5.27

Isopsetta isolepis butter sole 2 5.01

Sardinops sagax Pacific sardine 2 5.01

Icelinus quadriseriatus yellowchin sculpin 2 4.70

Pleuronectiformes unid. flatfishes 2 4.70

Lyopsetta exilis slender sole 2 4.58

Pleuronectidae unid. righteye flounders 2 3.12

Sebastes spp. rockfishes 1 2.88

Oxylebius pictus painted greenling 1 2.63

Gibbonsia spp. clinid kelpfishes 1 2.51

Pleuronichthys guttulatus diamond turbot 1 2.51

Pleuronichthys ritteri spotted turbot 1 2.51

Total Fishes: 1,697

(continued)
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-22

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA08

Start Date: 4/17/2006

Stations: H5-H6 (continued) Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 582 1,213.76

Cancer antennarius (megalops) brown rock crab megalops 215 539.41

Majidae unid. (megalops) spider crab megalops 153 358.43

Pinnixa spp. (megalops) pea crabs megalops 162 333.91

unidentified crab (megalops) unidentified crab megalops 49 140.10

Paguridae unid. (megalops) hermit crab megalops 56 137.18

Pinnotheres spp. (megalops) pea crab megalops 55 128.46

Grapsidae unid. (megalops) shore crab megalops 40 88.15

Pachycheles rudis (megalops) thickclaw porcelain crab 12 28.38

Cancer spp. (megalops) cancer crabs megalops 13 27.84

Cancer anthonyi (megalops) yellow crab megalops 11 27.08

Diogenidae (megalops) left-handed hermit crabs 8 22.04

Porcellanidae unid. (megalops) porcelain crab megalops 8 21.85

Loligo opalescens market squid 9 20.69

Brachyura unid. (megalops) unidentified crab megalops 8 19.86

Pachycheles pubescens (megalops) pubescent porcelain crab 6 15.80

Lophopanopeus spp. (megalops) black-clawed crab megalops 4 8.67

Cancer gracilis (megalops) slender crab megalops 4 8.35

Petrolisthes cinctipes (megalops) flat porcelain crab megalops 1 2.63

Petrolisthes eriomerus (megalops) flattop crab megalops 1 2.63

Total Target Invertebrates: 1,397
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-23

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA09

Start Date: 5/1/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 117 411.67

Gobiidae unid. gobies 77 259.33

Sciaenidae unid. croakers 39 141.83

larval fish - damaged unidentified larval fishes 7 25.93

Hypsoblennius spp. combtooth blennies 6 21.90

Engraulis mordax northern anchovy 5 17.34

Lepidogobius lepidus bay goby 4 14.49

Icelinus quadriseriatus yellowchin sculpin 4 12.40

Paralichthys californicus California halibut 3 11.12

larval fish fragment unidentified larval fishes 2 7.16

Pleuronichthys guttulatus diamond turbot 1 3.79

Paralichthyidae unid. sand flounders 1 3.57

larvae, unidentified yolksac unidentified yolksac larvae 1 3.37

Chitonotus / Icelinus sculpins 1 3.34

Citharichthys stigmaeus speckled sanddab 1 3.34

Clupeidae unid. herrings 1 3.34

Atherinopsidae unid. silversides 1 2.64

Total Fishes: 271

Eggs

fish eggs unid. unidentified fish eggs 1,297 4,334.55

Paralichthyidae unid. (eggs) sand flounder eggs 611 2,063.10

Sciaenidae unid. (eggs) croaker eggs 420 1,425.92

Citharichthys spp. (eggs) sanddab eggs 115 409.21

Pleuronichthys spp. (eggs) turbot eggs 42 134.90

Engraulidae unid. (eggs) anchovy eggs 16 53.91

Total Eggs: 2,501

Target Invertebrates

Pinnixa spp. (megalops) pea crabs megalops 46 133.21

Pugettia spp. (megalops) kelp crabs megalops 20 65.31

Majidae unid. (megalops) spider crab megalops 5 17.41

Paguridae unid. (megalops) hermit crab megalops 3 9.76

unidentified crab (megalops) unidentified crab megalops 1 3.37

Total Target Invertebrates: 75
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-24

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA10

Start Date: 5/15/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 130 429.83

Genyonemus lineatus white croaker 28 89.20

Lepidogobius lepidus bay goby 19 62.26

Engraulis mordax northern anchovy 16 54.36

Acanthogobius flavimanus yellowfin goby 15 50.50

Hypsoblennius spp. combtooth blennies 11 36.83

Icelinus spp. sculpins 9 30.03

larval fish - damaged unidentified larval fishes 4 14.53

Gobiesox spp. clingfishes 3 10.13

larval fish fragment unidentified larval fishes 1 3.49

Gillichthys mirabilis longjaw mudsucker 1 3.28

Cottidae unid. sculpins 1 3.10

Sciaenidae unid. croakers 1 3.10

Total Fishes: 239

Eggs

fish eggs unid. unidentified fish eggs 269 903.97

Sciaen. / Paralich. / Labridae (eggs) fish eggs 29 95.32

Engraulidae unid. (eggs) anchovy eggs 8 25.98

Pleuronichthys spp. (eggs) turbot eggs 2 6.76

Total Eggs: 308

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 253 832.72

Majidae unid. (megalops) spider crab megalops 119 400.71

unidentified crab (megalops) unidentified crab megalops 15 49.14

Pinnixa spp. (megalops) pea crabs megalops 12 38.97

Hemigrapsus spp. (megalops) shore crab megalops 3 10.32

Grapsidae unid. (megalops) shore crab megalops 3 9.10

Grapsidae / Canceridae (megalops) unidentified crab megalops 1 3.59

Paguridae unid. (megalops) hermit crab megalops 1 3.59

Hemigrapsus oregonensis (megs.) yellow shore crab megalops 1 3.49

Pinnotheridae (megalops) pea crab megalops 1 2.91

Total Target Invertebrates: 409
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-25

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA10

Start Date: 5/15/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 276 564.33

Hypsoblennius spp. combtooth blennies 224 434.26

Genyonemus lineatus white croaker 201 397.62

Lepidogobius lepidus bay goby 49 99.19

Engraulis mordax northern anchovy 31 64.30

Icelinus spp. sculpins 26 52.38

Gobiesox spp. clingfishes 10 19.79

larval fish fragment unidentified larval fishes 6 11.54

Gillichthys mirabilis longjaw mudsucker 4 7.93

Sebastes spp. rockfishes 2 4.15

Atherinopsis californiensis jacksmelt 2 3.92

unidentified fish, damaged unidentified damaged fish 2 3.83

Bathymasteridae unid. ronquils 2 3.76

larvae, unidentified yolksac unidentified yolksac larvae 1 2.16

Ruscarius creaseri roughcheek sculpin 1 2.16

Typhlogobius californiensis blind goby 1 2.13

Paralichthys californicus California halibut 1 2.09

Rhinogobiops nicholsi blackeye goby 1 2.08

Seriphus politus queenfish 1 2.02

Chitonotus pugetensis roughback sculpin 1 1.82

Sciaenidae unid. croakers 1 1.70

Total Fishes: 843

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 526 1,059.29

unidentified crab (megalops) unidentified crab megalops 153 311.46

Pinnixa spp. (megalops) pea crabs megalops 56 116.60

Grapsidae unid. (megalops) shore crab megalops 12 24.15

Paguridae unid. (megalops) hermit crab megalops 11 22.49

Cancer antennarius (megalops) brown rock crab megalops 9 18.83

Majidae unid. (megalops) spider crab megalops 3 5.53

Cancer anthonyi (megalops) yellow crab megalops 2 4.17

Lophopanopeus spp. (megalops) black-clawed crab megalops 1 2.23

Pinnotheres spp. (megalops) pea crab megalops 1 1.90

Total Target Invertebrates: 774
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-26

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA10

Start Date: 5/15/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 129 633.22

Gobiidae unid. gobies 47 234.23

Genyonemus lineatus white croaker 33 180.52

Engraulis mordax northern anchovy 18 82.19

Rhinogobiops nicholsi blackeye goby 3 14.73

unidentified fish, damaged unidentified damaged fish 2 11.93

Gibbonsia spp. clinid kelpfishes 2 11.39

Lepidogobius lepidus bay goby 2 10.38

Icelinus spp. sculpins 2 8.93

Orthonopias triacis snubnose sculpin 1 6.24

Gillichthys mirabilis longjaw mudsucker 1 4.68

Paralichthys californicus California halibut 1 4.68

Seriphus politus queenfish 1 4.68

Atherinopsidae unid. silversides 1 4.25

Cottidae unid. sculpins 1 4.25

larval fish fragment unidentified larval fishes 1 4.25

Ruscarius creaseri roughcheek sculpin 1 4.25

Total Fishes: 246

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 208 1,052.34

Pinnixa spp. (megalops) pea crabs megalops 91 402.23

unidentified crab (megalops) unidentified crab megalops 58 283.79

Grapsidae unid. (megalops) shore crab megalops 18 84.36

Paguridae unid. (megalops) hermit crab megalops 7 31.46

Cancer anthonyi (megalops) yellow crab megalops 5 23.98

Cancer antennarius (megalops) brown rock crab megalops 3 14.04

Total Target Invertebrates: 390
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-27

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA10

Start Date: 5/15/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 205 553.83

Genyonemus lineatus white croaker 83 185.46

Engraulis mordax northern anchovy 57 155.26

Gobiidae unid. gobies 55 140.06

Leuresthes tenuis California grunion 30 110.80

Engraulidae unid. anchovies 22 68.21

Gobiesox spp. clingfishes 13 34.65

Rhinogobiops nicholsi blackeye goby 10 24.95

larval fish fragment unidentified larval fishes 9 24.39

Typhlogobius californiensis blind goby 9 19.54

Lepidogobius lepidus bay goby 7 16.30

Ruscarius creaseri roughcheek sculpin 2 6.70

Icelinus spp. sculpins 2 3.87

Chitonotus pugetensis roughback sculpin 1 3.83

Clinocottus analis wooly sculpin 1 3.83

Citharichthys stigmaeus speckled sanddab 1 3.69

Cottidae unid. sculpins 1 3.69

Bathymasteridae unid. ronquils 1 2.39

Atherinopsidae unid. silversides 1 2.33

Atherinopsis californiensis jacksmelt 1 2.15

Labrisomidae unid. labrisomid blennies 1 1.71

Paralichthys californicus California halibut 1 1.71

unidentified fish, damaged unidentified damaged fish 1 1.71

Total Fishes: 514

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 239 582.66

unidentified crab (megalops) unidentified crab megalops 69 180.96

Pinnixa spp. (megalops) pea crabs megalops 25 58.33

Grapsidae unid. (megalops) shore crab megalops 10 25.03

Paguridae unid. (megalops) hermit crab megalops 5 10.51

Pinnotheres spp. (megalops) pea crab megalops 4 9.39

Cancer anthonyi (megalops) yellow crab megalops 3 7.69

Panulirus interruptus (phyllosome) California spiny lobster 3 6.87

Cancer antennarius (megalops) brown rock crab megalops 2 4.49

Lophopanopeus spp. (megalops) black-clawed crab megalops 2 4.31

Cancer spp. (megalops) cancer crabs megalops 1 2.39

Total Target Invertebrates: 363
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-28

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA11

Start Date: 5/30/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 262 767.36

Hypsoblennius spp. combtooth blennies 25 72.48

Sciaenidae unid. croakers 17 51.54

Engraulis mordax northern anchovy 16 47.63

Lepidogobius lepidus bay goby 16 45.27

Genyonemus lineatus white croaker 9 30.41

Engraulidae unid. anchovies 9 26.92

Paralichthys californicus California halibut 5 15.63

Gillichthys mirabilis longjaw mudsucker 5 15.34

Seriphus politus queenfish 3 10.71

larval fish fragment unidentified larval fishes 3 10.30

larval/post-larval fish unid. larval fishes 3 9.87

Acanthogobius flavimanus yellowfin goby 3 7.65

larval fish - damaged unidentified larval fishes 3 7.38

Pleuronichthys spp. turbots 2 6.73

Gibbonsia spp. clinid kelpfishes 2 5.29

Oxyjulis californica senorita 1 3.40

Rhinogobiops nicholsi blackeye goby 1 3.32

Semicossyphus pulcher California sheephead 1 2.88

Total Fishes: 386

Eggs

fish eggs unid. unidentified fish eggs 293 920.33

Sciaen. / Paralich. / Labridae (eggs) fish eggs 107 320.61

Engraulidae unid. (eggs) anchovy eggs 42 130.46

Pleuronichthys spp. (eggs) turbot eggs 4 11.90

Total Eggs: 446

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 76 229.36

Majidae unid. (megalops) spider crab megalops 34 104.14

unidentified crab (megalops) unidentified crab megalops 23 68.09

Pinnixa spp. (megalops) pea crabs megalops 18 45.38

Paguridae unid. (megalops) hermit crab megalops 2 6.05

Lophopanopeus spp. (megalops) black-clawed crab megalops 1 2.41

Total Target Invertebrates: 154
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-29

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA12

Start Date: 6/12/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 360 1,198.79

Hypsoblennius spp. combtooth blennies 50 169.93

Sciaenidae unid. croakers 35 113.72

Lepidogobius lepidus bay goby 23 77.56

Paralabrax spp. sand bass 16 51.03

Cheilotrema saturnum black croaker 12 34.56

Engraulidae unid. anchovies 11 33.37

larvae, unidentified yolksac unidentified yolksac larvae 9 29.86

Semicossyphus pulcher California sheephead 7 23.50

larval fish - damaged unidentified larval fishes 7 22.85

Gobiesox spp. clingfishes 5 16.53

Seriphus politus queenfish 5 15.28

Genyonemus lineatus white croaker 5 14.80

Engraulis mordax northern anchovy 4 13.52

larval fish fragment unidentified larval fishes 4 12.20

Oxyjulis californica senorita 2 6.24

Paralichthys californicus California halibut 1 4.05

Gillichthys mirabilis longjaw mudsucker 1 3.60

Pleuronectidae unid. righteye flounders 1 3.52

Citharichthys sordidus Pacific sanddab 1 2.72

Pleuronichthys spp. turbots 1 2.72

Rhinogobiops nicholsi blackeye goby 1 2.72

Total Fishes: 561

Eggs

fish eggs unid. unidentified fish eggs 221 722.29

Sciaen. / Paralich. / Labridae (eggs) fish eggs 209 685.25

Engraulidae unid. (eggs) anchovy eggs 19 61.27

Total Eggs: 449

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 37 129.28

Majidae unid. (megalops) spider crab megalops 19 65.31

unidentified crab (megalops) unidentified crab megalops 12 36.81

Pinnixa spp. (megalops) pea crabs megalops 5 13.07

Lophopanopeus spp. (megalops) black-clawed crab megalops 1 3.31

Total Target Invertebrates: 74
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-30

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA12

Start Date: 6/12/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 701 1,343.54

Gobiidae unid. gobies 214 445.95

Sciaenidae unid. croakers 75 148.62

Lepidogobius lepidus bay goby 53 103.37

Seriphus politus queenfish 52 100.83

larvae, unidentified yolksac unidentified yolksac larvae 30 61.91

Engraulis mordax northern anchovy 29 59.87

Cheilotrema saturnum black croaker 21 40.49

Engraulidae unid. anchovies 21 39.56

larval fish fragment unidentified larval fishes 17 35.63

larval fish - damaged unidentified larval fishes 12 23.62

Semicossyphus pulcher California sheephead 11 22.37

Paralichthys californicus California halibut 11 21.07

Genyonemus lineatus white croaker 8 16.13

Gobiesox spp. clingfishes 6 11.22

Paralabrax spp. sand bass 5 10.39

Sphyraena argentea Pacific barracuda 5 9.17

Roncador stearnsi spotfin croaker 4 7.53

Icelinus spp. sculpins 3 6.56

Hypsypops rubicundus garibaldi 3 5.85

Oxyjulis californica senorita 3 5.76

Labrisomidae unid. labrisomid blennies 3 4.83

Ruscarius creaseri roughcheek sculpin 2 4.24

Peprilus simillimus Pacific butterfish 2 3.52

Umbrina roncador yellowfin croaker 2 3.52

Artedius lateralis smoothhead sculpin 1 2.36

Clinocottus analis wooly sculpin 1 2.36

Pleuronectidae unid. righteye flounders 1 2.30

Pleuronectiformes unid. flatfishes 1 2.20

Citharichthys spp. sanddabs 1 1.96

Cottidae unid. sculpins 1 1.92

larval/post-larval fish unid. larval fishes 1 1.92

Pleuronichthys guttulatus diamond turbot 1 1.92

Gibbonsia spp. clinid kelpfishes 1 1.76

, Atherinopsidae unid. silversides 1 1.61

Labridae unid. wrasses 1 1.61

Leuresthes tenuis California grunion 1 1.61

Total Fishes: 1,305

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 85 173.87

Majidae unid. (megalops) spider crab megalops 30 60.29

Pinnixa spp. (megalops) pea crabs megalops 15 29.64

Diogenidae (megalops) left-handed hermit crabs 3 5.94

(continued)
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-31

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA12

Start Date: 6/12/2006

Stations: H1-H3 (continued) Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Target Invertebrates (continued)

Paguridae unid. (megalops) hermit crab megalops 3 5.94

Grapsidae unid. (megalops) shore crab megalops 3 5.67

Lophopanopeus spp. (megalops) black-clawed crab megalops 2 4.59

Panulirus interruptus (phyllosome) California spiny lobster 1 2.04

Cancer anthonyi (megalops) yellow crab megalops 1 1.80

Total Target Invertebrates: 143
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-32

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA12

Start Date: 6/12/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 82 497.47

Gobiidae unid. gobies 53 328.31

Engraulis mordax northern anchovy 17 100.47

Sciaenidae unid. croakers 15 94.32

Seriphus politus queenfish 10 62.21

Engraulidae unid. anchovies 8 49.17

larval fish - damaged unidentified larval fishes 7 43.13

larvae, unidentified yolksac unidentified yolksac larvae 6 36.47

Oxyjulis californica senorita 4 24.24

larval fish fragment unidentified larval fishes 4 23.50

Cheilotrema saturnum black croaker 3 18.23

Labrisomidae unid. labrisomid blennies 2 13.01

Clinocottus analis wooly sculpin 2 12.97

Paralichthys californicus California halibut 2 12.41

Paralabrax spp. sand bass 2 11.75

Syngnathus spp. pipefishes 2 11.75

Paralichthyidae unid. sand flounders 1 6.52

Artedius lateralis smoothhead sculpin 1 6.49

Ruscarius creaseri roughcheek sculpin 1 6.49

Semicossyphus pulcher California sheephead 1 6.49

Hypsypops rubicundus garibaldi 1 5.92

Oligocottus / Clinocottus sculpins 1 5.92

Rhinogobiops nicholsi blackeye goby 1 5.92

Zaniolepis spp. combfishes 1 5.92

Gibbonsia spp. clinid kelpfishes 1 5.87

Lepidogobius lepidus bay goby 1 5.87

Pleuronichthys verticalis hornyhead turbot 1 5.87

Sphyraena argentea Pacific barracuda 1 5.87

Total Fishes: 231

Target Invertebrates

Pinnixa spp. (megalops) pea crabs megalops 14 82.85

Pugettia spp. (megalops) kelp crabs megalops 11 69.67

unidentified crab (megalops) unidentified crab megalops 9 56.78

Majidae unid. (megalops) spider crab megalops 6 37.13

Grapsidae unid. (megalops) shore crab megalops 3 18.89

Lophopanopeus spp. (megalops) black-clawed crab megalops 2 12.97

Diogenidae (megalops) left-handed hermit crabs 1 6.52

Pinnotheres spp. (megalops) pea crab megalops 1 6.49

Cancer anthonyi (megalops) yellow crab megalops 1 5.92

Total Target Invertebrates: 48
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-33

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA12

Start Date: 6/12/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 273 789.40

Sciaenidae unid. croakers 86 251.74

Seriphus politus queenfish 89 239.33

Engraulis mordax northern anchovy 56 155.88

Gobiidae unid. gobies 41 129.67

Engraulidae unid. anchovies 34 108.12

larvae, unidentified yolksac unidentified yolksac larvae 35 94.08

Gobiesox spp. clingfishes 20 67.99

larval fish - damaged unidentified larval fishes 22 59.30

Genyonemus lineatus white croaker 25 56.09

larval fish fragment unidentified larval fishes 19 48.15

Paralichthys californicus California halibut 17 47.16

Oxyjulis californica senorita 13 35.96

Rhinogobiops nicholsi blackeye goby 11 35.61

Semicossyphus pulcher California sheephead 11 35.53

Sphyraena argentea Pacific barracuda 11 29.94

Paralabrax spp. sand bass 11 29.39

Labrisomidae unid. labrisomid blennies 7 21.21

Pleuronichthys verticalis hornyhead turbot 7 18.44

Hypsypops rubicundus garibaldi 6 17.95

Pleuronichthys ritteri spotted turbot 4 13.75

Lepidogobius lepidus bay goby 4 11.29

Cheilotrema saturnum black croaker 3 8.23

Roncador stearnsi spotfin croaker 3 7.61

Atherinopsidae unid. silversides 3 6.73

Umbrina roncador yellowfin croaker 2 6.46

Ruscarius creaseri roughcheek sculpin 2 5.88

Pleuronectidae unid. righteye flounders 2 5.64

Zaniolepis frenata shortspine combfish 2 4.94

Menticirrhus undulatus California corbina 1 4.01

Syngnathus spp. pipefishes 1 4.01

Citharichthys sordidus Pacific sanddab 1 3.86

larval/post-larval fish unid. larval fishes 1 3.86

Zaniolepis spp. combfishes 1 3.52

Hypsoblennius jenkinsi mussel blenny 1 2.94

Citharichthys stigmaeus speckled sanddab 1 2.24

Halichoeres semicinctus rock wrasse 1 2.24

Leuresthes tenuis California grunion 1 2.24

Pleuronectiformes unid. flatfishes 1 2.24

Pomacentridae unid. damselfishes 1 2.24

Total Fishes: 830

(continued)
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-34

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA12

Start Date: 6/12/2006

Stations: H5-H6 (continued) Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 70 202.42

Pinnixa spp. (megalops) pea crabs megalops 29 80.07

Majidae unid. (megalops) spider crab megalops 20 54.21

Lophopanopeus spp. (megalops) black-clawed crab megalops 5 15.66

Diogenidae (megalops) left-handed hermit crabs 5 14.40

unidentified crab (megalops) unidentified crab megalops 4 13.48

Paguridae unid. (megalops) hermit crab megalops 3 11.73

Petrolisthes spp. (megalops) porcelain crab megalops 3 8.35

Grapsidae unid. (megalops) shore crab megalops 3 8.23

Pinnotheres spp. (megalops) pea crab megalops 1 3.86

Porcellanidae unid. (megalops) porcelain crab megalops 1 3.86

Cancer anthonyi (megalops) yellow crab megalops 1 2.54

Panulirus interruptus (phyllosome) California spiny lobster 1 2.24

Total Target Invertebrates: 146
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-35

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA13

Start Date: 6/26/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 157 524.47

Hypsoblennius spp. combtooth blennies 27 91.31

Lepidogobius lepidus bay goby 13 43.87

Genyonemus lineatus white croaker 4 13.24

Engraulidae unid. anchovies 2 6.73

Artedius harringtoni scalyhead sculpin 1 3.13

larval fish fragment unidentified larval fishes 1 3.13

Gibbonsia spp. clinid kelpfishes 1 2.91

Total Fishes: 206

Eggs

fish eggs unid. unidentified fish eggs 79 263.49

Sciaen. / Paralich. / Labridae (eggs) fish eggs 34 113.22

Pleuronichthys spp. (eggs) turbot eggs 3 10.69

Engraulidae unid. (eggs) anchovy eggs 1 3.13

Total Eggs: 117

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 18 60.91

Pinnixa spp. (megalops) pea crabs megalops 15 51.95

Majidae unid. (megalops) spider crab megalops 11 37.53

unidentified crab (megalops) unidentified crab megalops 5 17.45

Lophopanopeus spp. (megalops) black-clawed crab megalops 1 3.60

Total Target Invertebrates: 50
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-36

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA14

Start Date: 7/10/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 63 191.84

Hypsoblennius spp. combtooth blennies 29 85.70

Lepidogobius lepidus bay goby 22 65.70

larval fish fragment unidentified larval fishes 3 9.14

Gobiesox spp. clingfishes 3 9.04

larval/post-larval fish unid. larval fishes 1 3.37

Seriphus politus queenfish 1 2.89

Total Fishes: 122

Eggs

fish eggs unid. unidentified fish eggs 27 168.68

Total Eggs: 27

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 27 80.41

unidentified crab (megalops) unidentified crab megalops 10 30.00

Pinnixa spp. (megalops) pea crabs megalops 9 27.93

Panulirus interruptus (phyllosome) California spiny lobster 4 12.27

Brachyura unid. (megalops) unidentified crab megalops 3 9.47

Pinnotheres spp. (megalops) pea crab megalops 2 6.27

Majidae unid. (megalops) spider crab megalops 2 5.87

Grapsidae unid. (megalops) shore crab megalops 1 3.37

Total Target Invertebrates: 58
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-37

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA14

Start Date: 7/10/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 173 313.17

Gobiidae unid. gobies 112 206.53

Lepidogobius lepidus bay goby 27 48.53

Engraulis mordax northern anchovy 8 14.33

larval fish fragment unidentified larval fishes 3 5.23

Sciaenidae unid. croakers 2 3.55

Syngnathus spp. pipefishes 1 1.87

Icelinus spp. sculpins 1 1.77

Gobiesox spp. clingfishes 1 1.72

Total Fishes: 328

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 49 86.60

Panulirus interruptus (phyllosome) California spiny lobster 20 35.99

Pinnixa spp. (megalops) pea crabs megalops 17 30.32

unidentified crab (megalops) unidentified crab megalops 12 20.35

Brachyura unid. (megalops) unidentified crab megalops 2 3.31

Grapsidae unid. (megalops) shore crab megalops 1 1.77

Cancer anthonyi (megalops) yellow crab megalops 1 1.68

Majidae unid. (megalops) spider crab megalops 1 1.65

Pinnotheres spp. (megalops) pea crab megalops 1 1.65

Total Target Invertebrates: 104
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-38

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA14

Start Date: 7/10/2006

Stations: H4 Mean

Sample Count: 4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 31 182.44

Gobiidae unid. gobies 18 100.32

Gobiesox spp. clingfishes 2 11.76

Lepidogobius lepidus bay goby 2 9.57

Total Fishes: 53

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 7 39.96

Pinnixa spp. (megalops) pea crabs megalops 6 39.79

Panulirus interruptus (phyllosome) California spiny lobster 4 24.68

unidentified crab (megalops) unidentified crab megalops 2 10.66

Brachyura unid. (megalops) unidentified crab megalops 1 6.63

Grapsidae unid. (megalops) shore crab megalops 1 6.63

Majidae unid. (megalops) spider crab megalops 1 5.86

Pinnotheres spp. (megalops) pea crab megalops 1 4.78

Total Target Invertebrates: 23
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-39

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA14

Start Date: 7/10/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 130 351.98

Gobiidae unid. gobies 24 68.70

Lepidogobius lepidus bay goby 20 47.19

Engraulis mordax northern anchovy 11 24.28

Gobiesox spp. clingfishes 5 12.15

Labrisomidae unid. labrisomid blennies 3 9.61

larval fish - damaged unidentified larval fishes 3 9.50

Zaniolepis frenata shortspine combfish 3 7.68

Icelinus spp. sculpins 2 5.24

Sciaenidae unid. croakers 2 4.18

Pomacentridae unid. damselfishes 1 3.50

larval fish fragment unidentified larval fishes 1 3.26

Pleuronichthys spp. turbots 1 2.50

Typhlogobius californiensis blind goby 1 2.50

Cheilotrema saturnum black croaker 1 2.09

Gibbonsia spp. clinid kelpfishes 1 2.09

Total Fishes: 209

Target Invertebrates

Panulirus interruptus (phyllosome) California spiny lobster 234 553.29

Pugettia spp. (megalops) kelp crabs megalops 24 69.29

Pinnixa spp. (megalops) pea crabs megalops 16 37.31

unidentified crab (megalops) unidentified crab megalops 6 17.84

Majidae unid. (megalops) spider crab megalops 4 12.39

Lophopanopeus spp. (megalops) black-clawed crab megalops 5 12.03

Cancer anthonyi (megalops) yellow crab megalops 2 4.59

Grapsidae unid. (megalops) shore crab megalops 1 2.50

Diogenidae (megalops) left-handed hermit crabs 1 2.09

Porcellanidae unid. (megalops) porcelain crab megalops 1 2.09

Total Target Invertebrates: 294
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-40

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA15

Start Date: 7/24/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 33 107.50

Gobiidae unid. gobies 29 100.14

Lepidogobius lepidus bay goby 10 32.66

Engraulidae unid. anchovies 1 3.63

larvae, unidentified yolksac unidentified yolksac larvae 1 3.63

Sciaenidae unid. croakers 1 3.63

Syngnathus spp. pipefishes 1 3.63

Rhinogobiops nicholsi blackeye goby 1 3.38

Cheilotrema saturnum black croaker 1 3.03

larval fish - damaged unidentified larval fishes 1 3.03

Total Fishes: 79

Eggs

fish eggs unid. unidentified fish eggs 22 145.68

Sciaen. / Paralich. / Labridae (eggs) fish eggs 7 44.47

Total Eggs: 29

Target Invertebrates

Panulirus interruptus (phyllosome) California spiny lobster 7 25.51

Pinnixa spp. (megalops) pea crabs megalops 3 10.29

Majidae unid. (megalops) spider crab megalops 1 3.27

Total Target Invertebrates: 11
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-41

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA16

Start Date: 8/7/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 90 261.40

Lepidogobius lepidus bay goby 18 51.80

Hypsoblennius spp. combtooth blennies 8 25.07

Rhinogobiops nicholsi blackeye goby 2 5.43

Acanthogobius flavimanus yellowfin goby 1 3.35

larvae, unidentified yolksac unidentified yolksac larvae 1 3.13

Lythrypnus spp. gobies 1 2.01

Sciaenidae unid. croakers 1 2.01

Total Fishes: 122

Eggs

fish eggs unid. unidentified fish eggs 207 1,024.20

Atherinopsidae unid. (eggs) silverside eggs 1 7.11

Total Eggs: 208

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 16 50.00

Majidae unid. (megalops) spider crab megalops 9 28.38

Panulirus interruptus (phyllosome) California spiny lobster 9 25.27

Pinnixa spp. (megalops) pea crabs megalops 7 16.74

Total Target Invertebrates: 41
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-42

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA16

Start Date: 8/7/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 128 273.94

Gobiidae unid. gobies 114 249.19

Lepidogobius lepidus bay goby 73 148.93

Rhinogobiops nicholsi blackeye goby 5 10.93

larval fish fragment unidentified larval fishes 4 9.04

Engraulis mordax northern anchovy 4 8.67

Lythrypnus spp. gobies 3 7.43

Acanthogobius flavimanus yellowfin goby 3 6.34

Labrisomidae unid. labrisomid blennies 2 4.26

larvae, unidentified yolksac unidentified yolksac larvae 1 2.37

Genyonemus lineatus white croaker 1 2.21

Icelinus spp. sculpins 1 2.14

Ilypnus gilberti cheekspot goby 1 2.12

Gobiesox spp. clingfishes 1 2.11

Pleuronichthys spp. turbots 1 1.95

larval/post-larval fish unid. larval fishes 1 1.80

Total Fishes: 343

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 43 92.67

Panulirus interruptus (phyllosome) California spiny lobster 33 74.73

Majidae unid. (megalops) spider crab megalops 21 45.66

Pinnixa spp. (megalops) pea crabs megalops 11 24.84

Diogenidae (megalops) left-handed hermit crabs 1 2.12

Total Target Invertebrates: 109
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-43

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA16

Start Date: 8/7/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 41 256.97

Hypsoblennius spp. combtooth blennies 35 219.13

Lepidogobius lepidus bay goby 7 40.99

Rhinogobiops nicholsi blackeye goby 2 13.29

Pleuronichthys spp. turbots 2 12.67

Gobiesox spp. clingfishes 1 6.78

Labrisomidae unid. labrisomid blennies 1 6.65

Lythrypnus spp. gobies 1 6.65

Sciaenidae unid. croakers 1 6.65

Genyonemus lineatus white croaker 1 6.02

Icelinus spp. sculpins 1 6.02

Syngnathus leptorhynchus bay pipefish 1 6.02

Gobiesocidae unid. clingfishes 1 5.45

Total Fishes: 95

Target Invertebrates

Panulirus interruptus (phyllosome) California spiny lobster 11 66.40

Majidae unid. (megalops) spider crab megalops 10 58.58

Pugettia spp. (megalops) kelp crabs megalops 6 37.50

Pinnixa spp. (megalops) pea crabs megalops 4 23.51

Total Target Invertebrates: 31
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-44

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA16

Start Date: 8/7/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 130 387.88

Gobiidae unid. gobies 48 136.03

Lepidogobius lepidus bay goby 9 25.30

Gobiesox spp. clingfishes 5 13.67

Syngnathus spp. pipefishes 3 10.80

Hypsypops rubicundus garibaldi 3 8.81

Seriphus politus queenfish 2 6.00

Lythrypnus spp. gobies 2 5.56

Paralichthyidae unid. sand flounders 1 3.41

Engraulidae unid. anchovies 1 3.00

Pleuronichthys ritteri spotted turbot 1 3.00

Gibbonsia spp. clinid kelpfishes 1 2.89

Citharichthys stigmaeus speckled sanddab 1 2.82

Rhinogobiops nicholsi blackeye goby 1 2.82

Acanthogobius flavimanus yellowfin goby 1 2.70

Genyonemus lineatus white croaker 1 2.70

larval fish fragment unidentified larval fishes 1 2.70

Paralichthys californicus California halibut 1 2.70

Sciaenidae unid. croakers 1 2.70

Hypsoblennius jenkinsi mussel blenny 1 2.57

Labrisomidae unid. labrisomid blennies 1 2.52

Pleuronectidae unid. righteye flounders 1 2.52

Total Fishes: 216

Target Invertebrates

Panulirus interruptus (phyllosome) California spiny lobster 30 81.35

Pugettia spp. (megalops) kelp crabs megalops 29 79.69

Majidae unid. (megalops) spider crab megalops 17 49.27

Pinnixa spp. (megalops) pea crabs megalops 11 31.22

Diogenidae (megalops) left-handed hermit crabs 2 5.59

Total Target Invertebrates: 89
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-45

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA17

Start Date: 8/21/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 40 128.16

Lepidogobius lepidus bay goby 23 73.41

Hypsoblennius spp. combtooth blennies 11 35.09

Labrisomidae unid. labrisomid blennies 1 3.33

Rhinogobiops nicholsi blackeye goby 1 3.33

Gobiesox spp. clingfishes 1 3.05

Sciaenidae unid. croakers 1 3.05

Lythrypnus zebra zebra goby 1 2.92

Total Fishes: 79

Eggs

fish eggs unid. unidentified fish eggs 22 124.28

Paralichthyidae unid. (eggs) sand flounder eggs 1 6.01

Total Eggs: 23

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 3 9.71

Pinnixa spp. (megalops) pea crabs megalops 2 6.61

Total Target Invertebrates: 5

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA18

Start Date: 9/5/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 36 122.67

Hypsoblennius spp. combtooth blennies 12 42.13

Gobiesox spp. clingfishes 1 3.79

Pleuronichthys guttulatus diamond turbot 1 3.51

Pleuronichthys spp. turbots 1 3.51

Total Fishes: 51

Eggs

fish eggs unid. unidentified fish eggs 39 267.10

Sciaen. / Paralich. / Labridae (eggs) fish eggs 2 14.71

Paralichthyidae unid. (eggs) sand flounder eggs 1 7.56

Total Eggs: 42

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 11 40.11

Pinnixa spp. (megalops) pea crabs megalops 7 22.12

Majidae unid. (megalops) spider crab megalops 6 21.32

Total Target Invertebrates: 24
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-46

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA18

Start Date: 9/5/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 133 282.36

Hypsoblennius spp. combtooth blennies 123 253.69

Lepidogobius lepidus bay goby 50 104.05

Seriphus politus queenfish 22 45.56

Engraulidae unid. anchovies 5 10.27

Pleuronichthys ritteri spotted turbot 3 5.99

larval fish - damaged unidentified larval fishes 1 2.34

Roncador stearnsi spotfin croaker 1 2.34

Artedius lateralis smoothhead sculpin 1 2.18

Syngnathus spp. pipefishes 1 2.13

larval fish fragment unidentified larval fishes 1 2.12

Genyonemus lineatus white croaker 1 2.00

Gobiesox spp. clingfishes 1 1.90

Total Fishes: 343

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 60 120.38

Majidae unid. (megalops) spider crab megalops 33 69.79

Pinnixa spp. (megalops) pea crabs megalops 18 37.45

Diogenidae (megalops) left-handed hermit crabs 1 2.13

Total Target Invertebrates: 112
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-47

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA18

Start Date: 9/5/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Hypsoblennius spp. combtooth blennies 20 153.81

Gobiidae unid. gobies 4 31.84

Genyonemus lineatus white croaker 2 19.95

Lepidogobius lepidus bay goby 2 19.95

Pleuronichthys ritteri spotted turbot 2 11.94

Paralichthyidae unid. sand flounders 1 6.40

Pleuronichthys guttulatus diamond turbot 1 6.40

Pleuronichthys spp. turbots 1 6.40

Citharichthys sordidus Pacific sanddab 1 5.92

Paralichthys californicus California halibut 1 5.92

Syngnathus spp. pipefishes 1 5.92

Total Fishes: 36

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 5 39.16

Pinnixa spp. (megalops) pea crabs megalops 2 27.96

Majidae unid. (megalops) spider crab megalops 1 13.98

Total Target Invertebrates: 8
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-48

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA18

Start Date: 9/5/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 63 218.53

Hypsoblennius spp. combtooth blennies 52 178.26

Seriphus politus queenfish 30 102.49

Pleuronichthys ritteri spotted turbot 16 44.39

Lepidogobius lepidus bay goby 11 37.78

Genyonemus lineatus white croaker 7 19.12

Engraulidae unid. anchovies 5 17.26

Sciaenidae unid. croakers 2 8.92

Paralichthys californicus California halibut 3 7.99

Gobiesox spp. clingfishes 1 6.31

Pleuronichthys spp. turbots 2 5.74

larval fish - damaged unidentified larval fishes 2 5.65

Cheilotrema saturnum black croaker 1 3.48

Menticirrhus undulatus California corbina 1 2.69

Total Fishes: 196

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 49 156.86

Pinnixa spp. (megalops) pea crabs megalops 21 100.94

Majidae unid. (megalops) spider crab megalops 21 75.30

Panulirus interruptus (phyllosome) California spiny lobster 9 30.35

Petrolisthes spp. (megalops) porcelain crab megalops 3 15.67

Diogenidae (megalops) left-handed hermit crabs 1 3.05

Grapsidae unid. (megalops) shore crab megalops 1 3.05

Lophopanopeus spp. (megalops) black-clawed crab megalops 1 2.69

Total Target Invertebrates: 106
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-49

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA19

Start Date: 9/18/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 57 209.68

Lepidogobius lepidus bay goby 14 49.88

Hypsoblennius spp. combtooth blennies 8 28.23

larval fish fragment unidentified larval fishes 1 3.86

larval fish - damaged unidentified larval fishes 1 3.67

Lythrypnus zebra zebra goby 1 3.11

Pleuronichthys guttulatus diamond turbot 1 2.74

Total Fishes: 83

Eggs

fish eggs unid. unidentified fish eggs 17 114.89

Paralichthyidae unid. (eggs) sand flounder eggs 2 13.70

Total Eggs: 19

Target Invertebrates

Pinnixa spp. (megalops) pea crabs megalops 8 26.74

Pugettia spp. (megalops) kelp crabs megalops 5 17.54

Majidae unid. (megalops) spider crab megalops 2 6.48

Grapsidae unid. (megalops) shore crab megalops 1 3.38

Total Target Invertebrates: 16
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-50

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA20

Start Date: 10/2/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 275 904.86

Hypsoblennius spp. combtooth blennies 2 6.28

Lepidogobius lepidus bay goby 1 3.76

Roncador stearnsi spotfin croaker 1 3.76

Hypsoblennius gilberti rockpool blenny 1 3.48

larval fish - damaged unidentified larval fishes 1 2.64

Sciaenidae unid. croakers 1 2.64

Total Fishes: 282

Eggs

fish eggs unid. unidentified fish eggs 5 33.62

Citharichthys spp. (eggs) sanddab eggs 1 6.33

Total Eggs: 6

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 34 117.62

Majidae unid. (megalops) spider crab megalops 9 30.39

Pinnixa spp. (megalops) pea crabs megalops 5 15.71

Grapsidae unid. (megalops) shore crab megalops 2 6.16

Brachyura unid. (megalops) unidentified crab megalops 1 3.77

Total Target Invertebrates: 51
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-51

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA21

Start Date: 10/16/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 90 312.39

Hypsoblennius spp. combtooth blennies 3 9.25

Engraulidae unid. anchovies 2 7.20

Engraulis mordax northern anchovy 2 6.84

Citharichthys stigmaeus speckled sanddab 1 3.48

Gibbonsia spp. clinid kelpfishes 1 3.45

Gobiesox spp. clingfishes 1 3.44

Genyonemus lineatus white croaker 1 3.25

larval fish fragment unidentified larval fishes 1 3.09

Lepidogobius lepidus bay goby 1 3.09

Total Fishes: 103

Eggs

fish eggs unid. unidentified fish eggs 12 78.79

Paralichthyidae unid. (eggs) sand flounder eggs 2 13.64

Pleuronichthys spp. (eggs) turbot eggs 1 5.91

Total Eggs: 15

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 70 232.92

Majidae unid. (megalops) spider crab megalops 15 50.95

Pinnixa spp. (megalops) pea crabs megalops 6 21.90

Total Target Invertebrates: 91
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-52

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA21

Start Date: 10/16/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 77 182.09

Hypsoblennius spp. combtooth blennies 49 113.02

Genyonemus lineatus white croaker 11 26.06

Lepidogobius lepidus bay goby 8 18.45

Paralichthyidae unid. sand flounders 1 2.33

Seriphus politus queenfish 1 2.28

Sciaenidae unid. croakers 1 2.26

Syngnathus spp. pipefishes 1 2.22

larval fish - damaged unidentified larval fishes 1 1.83

Total Fishes: 150

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 128 300.75

Majidae unid. (megalops) spider crab megalops 38 89.64

Pinnixa spp. (megalops) pea crabs megalops 17 41.54

Grapsidae unid. (megalops) shore crab megalops 2 4.80

Lophopanopeus spp. (megalops) black-clawed crab megalops 1 2.65

Panulirus interruptus (phyllosome) California spiny lobster 1 2.22

Total Target Invertebrates: 187
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-53

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA21

Start Date: 10/16/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 35 226.92

Genyonemus lineatus white croaker 20 136.02

Hypsoblennius spp. combtooth blennies 10 63.77

larval fish fragment unidentified larval fishes 3 16.87

Pleuronichthys ritteri spotted turbot 2 13.92

Lepidogobius lepidus bay goby 1 7.20

Clinocottus analis wooly sculpin 1 6.72

larvae, unidentified yolksac unidentified yolksac larvae 1 6.72

Engraulidae unid. anchovies 1 5.14

Total Fishes: 74

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 17 112.82

Majidae unid. (megalops) spider crab megalops 16 105.75

Pinnixa spp. (megalops) pea crabs megalops 10 61.22

Panulirus interruptus (phyllosome) California spiny lobster 2 13.92

Total Target Invertebrates: 45
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-54

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA21

Start Date: 10/16/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 59 182.73

Gobiidae unid. gobies 43 126.79

Hypsoblennius spp. combtooth blennies 35 101.92

larvae, unidentified yolksac unidentified yolksac larvae 24 75.98

Engraulidae unid. anchovies 17 50.20

Lepidogobius lepidus bay goby 8 22.69

Paralichthys californicus California halibut 5 15.64

Pleuronichthys ritteri spotted turbot 3 8.81

Pleuronichthys guttulatus diamond turbot 3 8.77

larval fish - damaged unidentified larval fishes 2 5.89

Paralichthyidae unid. sand flounders 2 5.81

larval fish fragment unidentified larval fishes 2 5.56

Citharichthys stigmaeus speckled sanddab 1 3.66

Pleuronectiformes unid. flatfishes 1 3.10

Engraulis mordax northern anchovy 1 3.04

Pleuronichthys verticalis hornyhead turbot 1 3.04

Sciaenidae unid. croakers 1 2.85

Seriphus politus queenfish 1 2.85

unidentified fish, damaged unidentified damaged fish 1 2.75

Total Fishes: 210

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 86 245.67

Majidae unid. (megalops) spider crab megalops 45 129.84

Pinnixa spp. (megalops) pea crabs megalops 11 31.16

Panulirus interruptus (phyllosome) California spiny lobster 2 5.79

Brachyura unid. (megalops) unidentified crab megalops 2 5.50

Porcellanidae unid. (megalops) porcelain crab megalops 1 3.66

Paguridae unid. (megalops) hermit crab megalops 1 2.85

Total Target Invertebrates: 148
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-55

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA22

Start Date: 10/30/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 57 189.98

Genyonemus lineatus white croaker 5 16.72

Hypsoblennius spp. combtooth blennies 1 3.68

Lepidogobius lepidus bay goby 1 3.51

Engraulidae unid. anchovies 1 3.32

Engraulis mordax northern anchovy 1 2.95

larval fish fragment unidentified larval fishes 1 2.95

Sciaenidae unid. croakers 1 2.95

Total Fishes: 68

Eggs

fish eggs unid. unidentified fish eggs 12 81.36

Paralichthyidae unid. (eggs) sand flounder eggs 2 14.56

Engraulidae unid. (eggs) anchovy eggs 1 7.47

Pleuronichthys spp. (eggs) turbot eggs 1 6.74

Total Eggs: 16

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 129 449.67

Majidae unid. (megalops) spider crab megalops 31 105.05

Pinnixa spp. (megalops) pea crabs megalops 5 17.19

Grapsidae unid. (megalops) shore crab megalops 1 3.57

Paguridae unid. (megalops) hermit crab megalops 1 3.56

Total Target Invertebrates: 167
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-56

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA23

Start Date: 11/13/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m

3

)

Fishes

Gobiidae unid. gobies 34 113.64

Genyonemus lineatus white croaker 12 40.96

larvae, unidentified yolksac unidentified yolksac larvae 2 6.88

larval fish fragment unidentified larval fishes 2 6.63

Hypsoblennius spp. combtooth blennies 2 6.26

Sciaenidae unid. croakers 1 3.52

Engraulidae unid. anchovies 1 3.19

Engraulis mordax northern anchovy 1 3.19

Total Fishes: 55

Eggs

fish eggs unid. unidentified fish eggs 16 107.58

Paralichthyidae unid. (eggs) sand flounder eggs 4 24.50

Sciaen. / Paralich. / Labridae (eggs) fish eggs 2 13.15

Sciaenidae unid. (eggs) croaker eggs 1 6.98

Pleuronichthys spp. (eggs) turbot eggs 1 6.44

Total Eggs: 24

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 36 118.46

Majidae unid. (megalops) spider crab megalops 17 55.94

Pinnixa spp. (megalops) pea crabs megalops 3 10.00

Brachyura unid. (megalops) unidentified crab megalops 2 6.95

Total Target Invertebrates: 58
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-57

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA23

Start Date: 11/13/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 105 194.57

Genyonemus lineatus white croaker 76 152.40

Hypsoblennius spp. combtooth blennies 17 35.16

Lepidogobius lepidus bay goby 9 16.67

larvae, unidentified yolksac unidentified yolksac larvae 6 12.15

Engraulis mordax northern anchovy 6 11.41

Pleuronichthys guttulatus diamond turbot 5 9.89

Engraulidae unid. anchovies 3 6.57

larval fish fragment unidentified larval fishes 3 6.26

Seriphus politus queenfish 2 4.13

Pleuronichthys spp. turbots 1 2.25

Gillichthys mirabilis longjaw mudsucker 1 1.97

Clinocottus analis wooly sculpin 1 1.84

Citharichthys stigmaeus speckled sanddab 1 1.78

Sciaenidae unid. croakers 1 1.55

Total Fishes: 237

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 111 217.96

Majidae unid. (megalops) spider crab megalops 40 81.15

Pinnixa spp. (megalops) pea crabs megalops 8 15.58

Brachyura unid. (megalops) unidentified crab megalops 3 5.65

Grapsidae unid. (megalops) shore crab megalops 1 1.55

Total Target Invertebrates: 163
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-58

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA23

Start Date: 11/13/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 273 1,625.77

Gobiidae unid. gobies 100 558.53

larvae, unidentified yolksac unidentified yolksac larvae 12 68.50

larval fish fragment unidentified larval fishes 8 49.65

Sciaenidae unid. croakers 6 37.15

Engraulidae unid. anchovies 1 6.24

Hypsoblennius spp. combtooth blennies 1 6.17

larval fish - damaged unidentified larval fishes 1 6.17

Total Fishes: 402

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 50 289.75

Majidae unid. (megalops) spider crab megalops 29 174.13

Pinnixa spp. (megalops) pea crabs megalops 5 26.76

Grapsidae unid. (megalops) shore crab megalops 2 10.95

Total Target Invertebrates: 86
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-59

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA23

Start Date: 11/13/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 542 1,512.22

larvae, unidentified yolksac unidentified yolksac larvae 60 171.68

Gobiidae unid. gobies 47 132.68

Engraulis mordax northern anchovy 35 99.31

Pleuronichthys guttulatus diamond turbot 22 63.10

Paralichthys californicus California halibut 17 48.66

Hypsoblennius spp. combtooth blennies 12 33.36

Lepidogobius lepidus bay goby 11 29.25

larval fish fragment unidentified larval fishes 7 19.76

Citharichthys stigmaeus speckled sanddab 5 13.69

Pleuronichthys ritteri spotted turbot 4 11.58

Paralichthyidae unid. sand flounders 2 5.97

Clinocottus analis wooly sculpin 2 5.60

Sciaenidae unid. croakers 2 5.38

Engraulidae unid. anchovies 1 3.14

Xystreurys liolepis fantail sole 1 3.14

Pleuronichthys verticalis hornyhead turbot 1 2.98

Pleuronichthys spp. turbots 1 2.69

Triphoturus mexicanus Mexican lampfish 1 2.69

Total Fishes: 773

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 70 191.62

Majidae unid. (megalops) spider crab megalops 25 72.95

Pinnixa spp. (megalops) pea crabs megalops 12 34.30

Brachyura unid. (megalops) unidentified crab megalops 2 5.26

Cancer anthonyi (megalops) yellow crab megalops 1 3.14

Paguridae unid. (megalops) hermit crab megalops 1 2.63

Total Target Invertebrates: 111
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-60

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA24

Start Date: 11/29/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 38 119.26

Genyonemus lineatus white croaker 4 12.55

Sciaenidae unid. croakers 2 6.33

Hypsoblennius spp. combtooth blennies 2 5.57

larval fish fragment unidentified larval fishes 1 3.77

Paralichthys californicus California halibut 1 3.77

Lepidogobius lepidus bay goby 1 3.67

larval fish - damaged unidentified larval fishes 1 3.17

Gillichthys mirabilis longjaw mudsucker 1 2.89

Engraulis mordax northern anchovy 1 2.86

larvae, unidentified yolksac unidentified yolksac larvae 1 2.86

Pleuronectidae unid. righteye flounders 1 2.86

Total Fishes: 54

Eggs

fish eggs unid. unidentified fish eggs 19 118.35

Paralichthyidae unid. (eggs) sand flounder eggs 5 26.71

Sciaenidae unid. (eggs) croaker eggs 4 21.53

Sciaen. / Paralich. / Labridae (eggs) fish eggs 3 20.67

Pleuronichthys spp. (eggs) turbot eggs 2 13.74

Total Eggs: 33

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 136 411.98

Majidae unid. (megalops) spider crab megalops 29 92.35

Pinnixa spp. (megalops) pea crabs megalops 8 23.68

Grapsidae unid. (megalops) shore crab megalops 4 11.31

Brachyura unid. (megalops) unidentified crab megalops 1 2.78

Total Target Invertebrates: 178
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-61

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA25

Start Date: 12/11/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 248 816.74

Genyonemus lineatus white croaker 36 111.05

Engraulis mordax northern anchovy 13 44.24

larvae, unidentified yolksac unidentified yolksac larvae 3 9.33

Hypsoblennius spp. combtooth blennies 1 3.05

Sciaenidae unid. croakers 1 3.05

Seriphus politus queenfish 1 3.05

Gibbonsia spp. clinid kelpfishes 1 3.04

Gillichthys mirabilis longjaw mudsucker 1 2.56

Total Fishes: 305

Eggs

fish eggs unid. unidentified fish eggs 79 517.41

Sciaenidae unid. (eggs) croaker eggs 31 194.43

Sciaen. / Paralich. / Labridae (eggs) fish eggs 3 20.64

Pleuronichthys spp. (eggs) turbot eggs 3 18.98

Paralichthyidae unid. (eggs) sand flounder eggs 2 14.11

Total Eggs: 118

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 145 462.71

Majidae unid. (megalops) spider crab megalops 27 83.62

Pinnixa spp. (megalops) pea crabs megalops 15 46.96

Paguridae unid. (megalops) hermit crab megalops 1 2.56

Total Target Invertebrates: 188
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-62

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA25

Start Date: 12/11/2006

Stations: H1-H3 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 197 348.46

Gobiidae unid. gobies 154 279.52

Engraulis mordax northern anchovy 27 50.15

Lepidogobius lepidus bay goby 14 26.93

larvae, unidentified yolksac unidentified yolksac larvae 8 14.65

larval fish fragment unidentified larval fishes 4 7.05

Hypsoblennius spp. combtooth blennies 3 6.19

Paralichthys californicus California halibut 3 4.96

larval fish - damaged unidentified larval fishes 2 3.63

Pleuronichthys ritteri spotted turbot 1 1.80

Citharichthys stigmaeus speckled sanddab 1 1.72

Pleuronichthys guttulatus diamond turbot 1 1.46

Total Fishes: 415

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 243 444.14

Pinnixa spp. (megalops) pea crabs megalops 44 78.78

Majidae unid. (megalops) spider crab megalops 23 42.16

Pinnotheridae (megalops) pea crab megalops 18 33.30

Brachyura unid. (megalops) unidentified crab megalops 7 12.35

Cancer anthonyi (megalops) yellow crab megalops 2 3.39

Grapsidae unid. (megalops) shore crab megalops 1 2.42

Total Target Invertebrates: 338
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-63

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA25

Start Date: 12/11/2006

Stations: H4 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 149 752.62

Gobiidae unid. gobies 49 244.49

Engraulis mordax northern anchovy 5 26.79

larvae, unidentified yolksac unidentified yolksac larvae 5 23.99

Paralichthys californicus California halibut 3 13.91

larval fish - damaged unidentified larval fishes 1 4.84

Pleuronichthys guttulatus diamond turbot 1 4.84

Clinocottus analis wooly sculpin 1 4.64

Engraulidae unid. anchovies 1 4.64

Total Fishes: 215

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 142 707.01

Pinnixa spp. (megalops) pea crabs megalops 15 72.16

Majidae unid. (megalops) spider crab megalops 11 58.90

Grapsidae unid. (megalops) shore crab megalops 5 25.52

Pinnotheridae (megalops) pea crab megalops 2 9.47

Total Target Invertebrates: 175
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-64

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA25

Start Date: 12/11/2006

Stations: H5-H6 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Genyonemus lineatus white croaker 340 935.02

Gobiidae unid. gobies 59 166.88

Engraulis mordax northern anchovy 11 31.86

larvae, unidentified yolksac unidentified yolksac larvae 9 27.55

Paralichthys californicus California halibut 6 16.85

Hypsoblennius spp. combtooth blennies 5 14.11

Pleuronichthys guttulatus diamond turbot 4 9.93

Lepidogobius lepidus bay goby 3 8.45

larval fish - damaged unidentified larval fishes 3 8.32

larval fish fragment unidentified larval fishes 2 5.83

Citharichthys stigmaeus speckled sanddab 1 3.35

Ruscarius creaseri roughcheek sculpin 1 3.13

Atherinopsidae unid. silversides 1 2.91

Pleuronichthys ritteri spotted turbot 1 2.82

Seriphus politus queenfish 1 2.05

Total Fishes: 447

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 125 352.15

Pinnixa spp. (megalops) pea crabs megalops 31 79.30

Majidae unid. (megalops) spider crab megalops 18 54.02

Brachyura unid. (megalops) unidentified crab megalops 11 33.88

Pinnotheridae (megalops) pea crab megalops 3 7.11

Total Target Invertebrates: 188
Harbor Generating Station

IM&E Final Report Appendix C1: Entrainment Data

C1-65

Harbor Generating Station

Entrainment Study - Fish and Invertebrate Abundances

Survey: HGSEA26

Start Date: 12/26/2006

Stations: E1 Mean

Concentration

Taxon Common Name Count (#/1,000m3)

Fishes

Gobiidae unid. gobies 111 480.84

Genyonemus lineatus white croaker 4 17.10

Lepidogobius lepidus bay goby 3 13.52

Engraulis mordax northern anchovy 2 9.25

Sciaenidae unid. croakers 2 8.87

Typhlogobius californiensis blind goby 1 4.98

Total Fishes: 123

Eggs

fish eggs unid. unidentified fish eggs 13 113.01

Paralichthyidae unid. (eggs) sand flounder eggs 4 31.97

Total Eggs: 17

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 7 29.14

Majidae unid. (megalops) spider crab megalops 2 8.94

Pinnixa spp. (megalops) pea crabs megalops 2 8.94

Total Target Invertebrates: 11
Harbor Generating Station Appendix C2: Calculated Annual

IM&E Final Report Entrainment and Standard Error Data

C2-1

Appendix D2. Calculated Annual Entrainment and Standard Error Data

Table D2-1. Calculated total annual entrainment and standard error of larval fish and eggs at HGS in 2006 based on actual and design

cooling water intake flow volumes.

Taxon Common Name

Calculated Annual

Entrainment

(Actual Flows) Standard Error

Calculated Annual

Entrainment

(Design Flows) Standard Error

Larval Fish

Gobiidae unid. gobies 33,290,815 869,904 75,938,007 1,933,837

Acanthogobius flavimanus yellowfin goby 15,407,999 1,744,298 37,604,336 4,325,986

Genyonemus lineatus white croaker 7,164,843 154,612 18,777,752 401,199

Lepidogobius lepidus bay goby 2,376,260 66,436 5,070,071 138,207

Hypsoblennius spp. combtooth blennies 2,255,907 55,768 4,362,576 100,491

Sciaenidae unid. croakers 995,438 43,751 2,856,932 173,898

Engraulidae unid. anchovies 940,784 54,597 2,068,979 105,000

unidentified fish, damaged unidentified damaged fish 646,175 25,303 1,571,226 58,358

larvae, unidentified yolksac unidentified yolksac larvae 288,308 22,120 679,015 48,803

Gillichthys mirabilis longjaw mudsucker 254,865 12,241 558,887 27,666

Gobiesocidae unid. clingfishes 236,654 16,157 515,917 35,120

Icelinus spp. sculpins 190,484 16,231 446,021 33,925

Paralichthys californicus California halibut 165,782 10,324 424,529 24,336

Paralabrax spp. sand bass 122,010 26,030 271,192 56,085

Cheilotrema saturnum black croaker 94,525 16,173 200,992 34,434

Seriphus politus queenfish 83,731 7,804 176,487 15,642

Gibbonsia spp. clinid kelpfishes 77,308 7,719 173,122 17,783

Rhinogobiops nicholsi blackeye goby 71,631 6,642 145,314 12,681

Leptocottus armatus Pacific staghorn sculpin 68,768 6,698 160,195 15,742

Semicossyphus pulcher California sheephead 64,438 6,322 141,346 13,412

larval/post-larval fish unid. larval fishes 58,152 6,794 119,578 13,236

Clinocottus spp. sculpins 55,826 6,271 112,731 12,202

Citharichthys spp. sanddabs 41,222 5,876 115,405 15,092

Pleuronichthys spp. turbots 36,951 4,803 73,078 9,001

Pleuronichthys guttulatus diamond turbot 36,799 4,992 93,021 11,151

(table continued)
Harbor Generating Station Appendix C2: Calculated Annual

IM&E Final Report Entrainment and Standard Error Data

C2-2

Table D2-1 (continued). Calculated total annual entrainment and standard error of larval fish and eggs at HGS in 2006 based on actual

and design cooling water intake flow volumes.

Taxon Common Name

Calculated Annual

Entrainment

(Actual Flows) Standard Error

Calculated Annual

Entrainment

(Design Flows) Standard Error

Labrisomidae unid. labrisomid blennies 29,483 5,990 71,609 14,662

Oxyjulis californica senorita 24,673 3,716 52,620 7,495

Pleuronectidae unid. righteye flounders 23,120 3,732 52,521 8,234

Ruscarius creaseri roughcheek sculpin 20,616 4,081 50,242 9,975

Pleuronectiformes unid. flatfishes 16,347 2,475 40,493 6,128

Cottidae unid. sculpins 15,756 3,158 31,607 6,023

Lythrypnus zebra zebra goby 14,795 2,839 34,416 6,507

Syngnathus spp. pipefishes 14,250 3,935 20,766 5,550

Orthonopias triacis snubnose sculpin 13,806 2,341 32,367 5,428

Sardinops sagax Pacific sardine 11,836 1,898 29,933 4,789

Artedius spp. sculpins 10,653 2,986 17,916 4,788

Typhlogobius californiensis blind goby 10,523 2,919 26,455 7,337

Clupeidae unid. herrings 8,864 2,121 36,966 6,990

Roncador stearnsi spotfin croaker 8,735 2,336 21,531 5,754

Pleuronichthys verticalis hornyhead turbot 8,693 2,398 19,596 5,237

Merluccius productus Pacific hake 8,421 2,362 19,741 5,475

Girella nigricans opaleye 7,894 2,114 19,963 5,335

Bathylagidae unid. blacksmelt 6,622 1,827 14,928 3,990

Lythrypnus spp. gobies 6,249 1,733 11,481 3,069

Bathymasteridae unid. ronquils 5,843 1,621 14,511 4,025

Paralichthyidae unid. sand flounders 1,926 1,024 20,449 5,465

Chitonotus / Icelinus sculpins 1,798 957 19,097 5,104

Atherinopsidae unid. silversides 1,422 756 15,096 4,035

Total Larval Fish 65,297,999 153,331,011

Fish Eggs

fish eggs unid. unidentified fish eggs 49,261,253 2,104,741 130,894,994 5,066,941

Genyonemus lineatus white croaker eggs 17,867,461 901,215 43,114,182 2,226,295

Sciaenidae unid. croaker eggs 14,562,519 607,258 41,351,239 1,519,856

(table continued)
Harbor Generating Station Appendix C2: Calculated Annual

IM&E Final Report Entrainment and Standard Error Data

C2-3

Table D2-1 (continued). Calculated total annual entrainment and standard error of larval fish and eggs at HGS in 2006 based on actual

and design cooling water intake flow volumes.

Taxon Common Name

Calculated Annual

Entrainment

(Actual Flows) Standard Error

Calculated Annual

Entrainment

(Design Flows) Standard Error

Fish Eggs

Paralichthyidae unid. sand flounder eggs 8,780,223 214,000 30,684,631 563,025

Sciaenidae/Paralichthyidae/Labridae SPL fish eggs 5,208,682 159,806 11,085,521 362,938

Citharichthys spp. sanddab eggs 1,499,868 124,838 5,319,639 589,511

Pleuronichthys spp. turbot eggs 1,018,933 29,538 2,987,271 72,517

Paralichthys californicus California halibut eggs 860,518 39,298 2,013,440 92,977

Engraulidae unid. anchovy eggs 803,290 23,311 1,932,617 58,079

Atherinopsidae unid. silverside eggs 22,147 6,143 40,690 10,875

Total Fish Eggs 99,884,894 269,424,225
Harbor Generating Station Appendix C2: Calculated Annual

IM&E Final Report Entrainment and Standard Error Data

C2-4

Table D2-2. Calculated total annual entrainment and standard error of target shellfishes at HGS in 2006 based on actual and design

cooling water intake flow volumes.

Taxon Common Name

Calculated Annual

Entrainment

(Actual Flows) Standard Error

Calculated Annual

Entrainment

(Design Flows) Standard Error

Target Invertebrates

Pugettia spp. (megalops) kelp crabs megalops 12,009,598 285,695 26,357,647 608,953

Majidae unid. (megalops) spider crab megalops 3,520,320 149,419 7,285,587 275,123

Pinnixa spp. (megalops) pea crabs megalops 1,810,300 106,592 4,467,908 287,416

unidentified crab (megalops) unidentified crab megalops 727,346 40,778 1,480,727 75,784

Grapsidae unid. (megalops) shore crab megalops 241,523 12,455 526,881 26,937

Panulirus interruptus (phyllosome) California spiny lobster (larval) 217,477 16,512 360,853 25,703

Paguridae unid. (megalops) hermit crab megalops 165,787 12,935 422,270 31,713

Brachyura unid. (megalops) unidentified crab megalops 64,917 7,928 134,388 15,948

Pinnotheres spp. (megalops) pea crab megalops 38,804 4,466 84,172 9,695

Lophopanopeus spp. (megalops) black-clawed crab megalops 27,081 4,549 51,987 8,228

Loligo opalescens market squid 26,676 4,612 62,179 10,354

Cancer spp. (megalops) cancer crabs megalops 15,625 2,506 35,225 5,474

Grapsidae / Cancridae (megalops) unidentified crab megalops 12,015 3,213 21,990 5,678

Pinnotheridae (megalops) pea crab megalops 9,749 2,607 17,843 4,607

Diogenidae (megalops) left-handed hermit crabs megalops 7,894 2,114 19,963 5,335

Pachygrapsus crassipes (megalops) striped shore crab megalops 6,224 1,727 15,456 4,287

Total 18,901,336 41,345,075
Harbor Generating Station

Appendix D

Impingement Data
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-2

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI1

Start Date: January 5, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 2 0.014

Embiotoca jacksoni black perch 2 0.029

Heterostichus rostratus giant kelpfish 3 0.497

Tridentiger trigonocephalus chameleon goby 1 0.002

Acanthogobius flavimanus yellowfin goby 1 0.014

9 0.556

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Pyromaia tuberculata tuberculate pear crab 2 0.003

Octopus bimaculatus/bimaculoides California two-spot octopus 6 1.268

Heptacarpus paludicola California coastal shrimp 2 0.002

Panulirus interruptus California spiny lobster 2 0.312

13 1.586
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-3

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI2

Start Date: January 12, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 2 0.011

Embiotoca jacksoni black perch 2 0.030

Gibbonsia elegans spotted kelpfish 1 0.008

Heterostichus rostratus giant kelpfish 2 0.370

Urobatis halleri round stingray 1 0.165

Acanthogobius flavimanus yellowfin goby 1 0.029

Rhacochilus vacca pile perch 1 0.024

10 0.637

Shellfish

Heptacarpus palpator intertidal coastal shrimp 3 0.003

Octopus bimaculatus/bimaculoides California two-spot octopus 2 0.237

5 0.240

Non-Shellfish

Cnidaria sea jelly, unid. 1 0.001

Parastichopus parvimensis warty sea cucumber 1 0.027

2 0.028
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-4

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI3

Start Date: January 19, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 1 0.023

Gibbonsia elegans spotted kelpfish 1 0.010

Urobatis halleri round stingray 1 0.181

Tridentiger trigonocephalus chameleon goby 1 0.005

Paralabrax nebulifer barred sand bass 1 0.004

5 0.223

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Pyromaia tuberculata tuberculate pear crab 1 0.003

Octopus bimaculatus/bimaculoides California two-spot octopus 1 0.249

Heptacarpus paludicola California coastal shrimp 5 0.003

8 0.256
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-5

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI4

Start Date: January 26, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 2 0.025

Phanerodon furcatus white seaperch 1 0.028

Urobatis halleri round stingray 2 0.659

Acanthogobius flavimanus yellowfin goby 1 0.018

6 0.730

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Octopus bimaculatus/bimaculoides California two-spot octopus 1 0.240

Heptacarpus paludicola California coastal shrimp 1 0.001

Panulirus interruptus California spiny lobster 1 0.199

4 0.441

Non-Shellfish

Archidoris montereyensis Monterey sea-lemon 1 0.012

Parastichopus californicus California sea cucumber 1 0.013

Cuthona lagunae orange-faced nudibranch 1 0.001

3 0.026
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-6

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI5

Start Date: February 2, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 4 0.076

Gibbonsia elegans spotted kelpfish 1 0.004

Heterostichus rostratus giant kelpfish 1 0.011

Tridentiger trigonocephalus chameleon goby 1 0.008

Acanthogobius flavimanus yellowfin goby 6 0.122

13 0.221

Shellfish

Octopus bimaculatus/bimaculoides California two-spot octopus 1 0.152

Heptacarpus paludicola California coastal shrimp 1 0.001

Lysmata californica red rock shrimp 2 0.002

Panulirus interruptus California spiny lobster 3 2.129

7 2.284

Non-Shellfish

Triopha maculata spotted triopha 1 0.001

1 0.001
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-7

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI6

Start Date: February 9, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

None

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Hemigrapsus oregonensis yellow shore crab 1 0.002

Pyromaia tuberculata tuberculate pear crab 1 0.003

3 0.006

Non-Shellfish

Diaulula sandiegensis ring-spotted dorid 1 0.002

Pisaster sp sea star, unid. 1 0.143

Parastichopus parvimensis warty sea cucumber 1 0.133

3 0.278
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-8

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI7

Start Date: February 16, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 1 0.007

Embiotoca jacksoni black perch 1 0.023

Gibbonsia elegans spotted kelpfish 1 0.006

Heterostichus rostratus giant kelpfish 2 0.037

Urobatis halleri round stingray 1 0.137

Acanthogobius flavimanus yellowfin goby 1 0.017

7 0.227

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Pyromaia tuberculata tuberculate pear crab 1 0.001

Octopus bimaculatus/bimaculoides California two-spot octopus 4 1.023

6 1.025

Non-Shellfish

Hermissenda crassicornis hermissenda 1 0.001

Pycnogonida sea spider, unid. 1 0.001

2 0.002
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-9

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI8

Start Date: February 23, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 1 0.003

Embiotoca jacksoni black perch 1 0.024

Heterostichus rostratus giant kelpfish 1 0.025

Urobatis halleri round stingray 1 0.348

Acanthogobius flavimanus yellowfin goby 2 0.032

6 0.432

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.002

Pyromaia tuberculata tuberculate pear crab 2 0.002

Heptacarpus paludicola California coastal shrimp 1 0.001

Panulirus interruptus California spiny lobster 1 0.432

6 0.437

Non-Shellfish

Cnidaria sea jelly, unid. 1 0.028

Holothuroidea sea cucumber, unid. 1 0.001

Pleurobranchaea californica California sea slug 1 1.778

3 1.807
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-10

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI9

Start Date: March 2, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Gibbonsia elegans spotted kelpfish 1 0.013

Urobatis halleri round stingray 1 0.217

2 0.230

Shellfish

Heptacarpus palpator intertidal coastal shrimp 3 0.005

Pyromaia tuberculata tuberculate pear crab 2 0.002

Octopus bimaculatus/bimaculoides California two-spot octopus 1 0.313

Heptacarpus paludicola California coastal shrimp 1 0.001

Cancer antennarius Pacific rock crab 1 0.335

Heptacarpus sp coastal shrimp, unid. 2 0.002

10 0.658

Non-Shellfish

Hermissenda crassicornis hermissenda 1 0.001

Diaulula sandiegensis ring-spotted dorid 1 0.003

2 0.004
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-11

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI10

Start Date: March 9, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Urobatis halleri round stingray 3 0.739

Tridentiger trigonocephalus chameleon goby 1 0.006

Acanthogobius flavimanus yellowfin goby 1 0.019

5 0.764

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.001

Pyromaia tuberculata tuberculate pear crab 2 0.005

Octopus bimaculatus/bimaculoides California two-spot octopus 2 0.419

Heptacarpus sp coastal shrimp, unid. 1 0.001

7 0.426

Non-Shellfish

Navanax inermis California aglaja 1 0.031

1 0.031
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-12

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI11

Start Date: March 16, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Acanthogobius flavimanus yellowfin goby 1 0.026

1 0.026

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Hemigrapsus oregonensis yellow shore crab 1 0.005

Pyromaia tuberculata tuberculate pear crab 2 0.003

Heptacarpus paludicola California coastal shrimp 2 0.002

Heptacarpus sp coastal shrimp, unid. 1 0.001

7 0.012

Non-Shellfish

Pisaster sp sea star, unid. 1 1.194

Discodorididae nudibranch, unid. 1 0.002

Anisodoris nobilis Pacific sea-lemon 1 0.001

3 1.197
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-13

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI12

Start Date: March 23, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Genyonemus lineatus white croaker 1 0.022

Gibbonsia elegans spotted kelpfish 1 0.010

Porichthys notatus plainfin midshipman 1 0.003

3 0.035

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.002

Pyromaia tuberculata tuberculate pear crab 1 0.001

Panulirus interruptus California spiny lobster 1 0.772

4 0.775

Non-Shellfish

Dendronotus iris giant-frond-aeolis 1 0.019

Parastichopus parvimensis warty sea cucumber 1 0.047

Ammothea hilgendorfi sea spider 3 0.002

Scrippsia pacifica giant bell jelly 1 0.044

Ctenophora comb jelly, unid. 1 0.006

7 0.118
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-14

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI13

Start Date: March 30, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 1 0.126

Heterostichus rostratus giant kelpfish 1 0.118

Urobatis halleri round stingray 2 0.587

Acanthogobius flavimanus yellowfin goby 2 0.019

Icelinus quadriseriatus yellowchin sculpin 1 0.005

7 0.855

Shellfish

Portunus xantusii Xantus swimming crab 1 0.035

Pyromaia tuberculata tuberculate pear crab 1 0.003

Octopus bimaculatus/bimaculoides California two-spot octopus 2 0.334

Panulirus interruptus California spiny lobster 1 0.345

5 0.717

Non-Shellfish

Hermissenda crassicornis hermissenda 2 0.001

Anisodoris nobilis Pacific sea-lemon 1 0.009

3 0.010
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-15

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI14

Start Date: April 6, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 1 0.005

Porichthys notatus plainfin midshipman 1 0.001

Embiotocidae surfperch, unid. 1 0.004

3 0.010

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Pyromaia tuberculata tuberculate pear crab 2 0.007

3 0.008

Non-Shellfish

Hermissenda crassicornis hermissenda 1 0.001

Aplysia californica California seahare 1 0.118

Anisodoris nobilis Pacific sea-lemon 1 0.012

3 0.131
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-16

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI15

Start Date: April 13, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 1 0.025

Embiotoca jacksoni black perch 7 0.049

Pleuronichthys verticalis hornyhead turbot 1 0.089

Porichthys myriaster specklefin midshipman 1 0.003

Acanthogobius flavimanus yellowfin goby 2 0.039

Rhacochilus vacca pile perch 1 0.059

13 0.264

Shellfish

Pyromaia tuberculata tuberculate pear crab 3 0.005

Heptacarpus paludicola California coastal shrimp 1 0.001

4 0.006

Non-Shellfish

Hermissenda crassicornis hermissenda 4 0.002

Pycnogonida sea spider, unid. 1 0.001

Parastichopus parvimensis warty sea cucumber 1 0.007

Parastichopus sp sea cucumber, unid. 1 0.001

7 0.011
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-17

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI16

Start Date: April 20, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Atherinops affinis topsmelt 1 0.029

Embiotoca jacksoni black perch 1 0.005

2 0.034

Shellfish

Pyromaia tuberculata tuberculate pear crab 1 0.003

Octopus bimaculatus/bimaculoides California two-spot octopus 2 0.287

Heptacarpus paludicola California coastal shrimp 1 0.001

4 0.291

Non-Shellfish

Hermissenda crassicornis hermissenda 5 0.002

Polycera hedgpethi Hedgpeth's polycera 1 0.001

Leptopecten sp scallop, unid. 4 0.001

Pycnogonida sea spider, unid. 1 0.001

Parastichopus sp sea cucumber, unid. 1 0.001

12 0.006
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-18

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI19

Start Date: May 11, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 5 0.072

Embiotoca jacksoni black perch 8 0.041

Gibbonsia elegans spotted kelpfish 2 0.013

Heterostichus rostratus giant kelpfish 1 0.024

Pleuronichthys verticalis hornyhead turbot 1 0.079

Porichthys myriaster specklefin midshipman 60 0.521

Porichthys notatus plainfin midshipman 6 0.023

Syngnathus leptorhynchus bay pipefish 1 0.006

Urobatis halleri round stingray 1 0.625

Tridentiger trigonocephalus chameleon goby 1 0.007

Acanthogobius flavimanus yellowfin goby 3 0.036

Paralabrax nebulifer barred sand bass 1 0.007

90 1.454

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Pyromaia tuberculata tuberculate pear crab 2 0.004

Heptacarpus paludicola California coastal shrimp 1 0.001

4 0.006

Non-Shellfish

Aplysia californica California seahare 1 0.177

Diaulula sandiegensis ring-spotted dorid 1 0.001

Ammothea hilgendorfi sea spider 2 0.001

4 0.179
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-19

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI20

Start Date: May 18, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 4 0.039

Embiotoca jacksoni black perch 16 0.083

Heterostichus rostratus giant kelpfish 1 0.039

Porichthys myriaster specklefin midshipman 5 0.033

Paralabrax nebulifer barred sand bass 2 0.017

28 0.211

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.002

Hemigrapsus oregonensis yellow shore crab 1 0.008

Pyromaia tuberculata tuberculate pear crab 4 0.006

Heptacarpus paludicola California coastal shrimp 2 0.002

Pandalus danae dock shrimp 1 0.006

10 0.024

Non-Shellfish

Hermissenda crassicornis hermissenda 2 0.002

Parastichopus parvimensis warty sea cucumber 1 0.012

3 0.014
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-20

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI21

Start Date: May 25, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 1 0.007

Heterostichus rostratus giant kelpfish 1 0.024

Phanerodon furcatus white seaperch 3 0.027

Pleuronichthys verticalis hornyhead turbot 1 0.077

Porichthys notatus plainfin midshipman 1 0.007

Paralabrax nebulifer barred sand bass 1 0.139

8 0.281

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.002

Panulirus interruptus California spiny lobster 1 0.149

3 0.151

Non-Shellfish

Hermissenda crassicornis hermissenda 3 0.002

Parastichopus sp sea cucumber, unid. 1 0.001

4 0.003
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-21

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI22

Start Date: June 1, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 20 0.256

Embiotoca jacksoni black perch 18 0.235

Gibbonsia elegans spotted kelpfish 1 0.010

Leptocottus armatus Pacific staghorn sculpin 2 0.013

Phanerodon furcatus white seaperch 8 0.183

Porichthys myriaster specklefin midshipman 3 0.203

Urobatis halleri round stingray 1 0.672

Paralabrax nebulifer barred sand bass 1 0.005

54 1.577

Shellfish

Pyromaia tuberculata tuberculate pear crab 2 0.004

2 0.004

Non-Shellfish

Hermissenda crassicornis hermissenda 22 0.005

Polycera atra orange-spike polycera 1 0.001

Pycnogonida sea spider, unid. 5 0.002

Parastichopus californicus California sea cucumber 1 0.018

29 0.026
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-22

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI23

Start Date: June 8, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 3 0.033

Embiotoca jacksoni black perch 3 0.011

Heterostichus rostratus giant kelpfish 2 0.104

Phanerodon furcatus white seaperch 1 0.002

Paralabrax nebulifer barred sand bass 1 0.016

10 0.166

Shellfish

Heptacarpus palpator intertidal coastal shrimp 3 0.003

Panulirus interruptus California spiny lobster 2 0.496

5 0.499

Non-Shellfish

Hermissenda crassicornis hermissenda 32 0.008

Polycera atra orange-spike polycera 2 0.001

Flabellina trilineata threeline aeolis 1 0.001

Dendronotus frondosus leafy dendronotid 2 0.001

Triopha maculata spotted triopha 1 0.002

Parastichopus parvimensis warty sea cucumber 2 0.345

40 0.358
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-23

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI24

Start Date: June 15, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 5 0.017

Gibbonsia elegans spotted kelpfish 3 0.025

Hyperprosopon argenteum walleye surfperch 1 0.006

Phanerodon furcatus white seaperch 1 0.117

Porichthys myriaster specklefin midshipman 2 0.173

12 0.338

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Pyromaia tuberculata tuberculate pear crab 2 0.005

Cancer antennarius Pacific rock crab 1 0.324

Pandalus danae dock shrimp 1 0.001

5 0.331

Non-Shellfish

Hermissenda crassicornis hermissenda 52 0.015

Polycera hedgpethi Hedgpeth's polycera 2 0.001

Polycera atra orange-spike polycera 10 0.004

Flabellina trilineata threeline aeolis 1 0.001

Dirona picta spotted dirona 6 0.002

Triopha maculata spotted triopha 5 0.002

76 0.025
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-24

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI25

Start Date: June 22, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Heterostichus rostratus giant kelpfish 1 0.084

Pleuronichthys verticalis hornyhead turbot 1 0.220

Urobatis halleri round stingray 1 0.347

Tridentiger trigonocephalus chameleon goby 1 0.007

4 0.658

Shellfish

Crangon nigromaculata blackspotted bay shrimp 1 0.001

Heptacarpus palpator intertidal coastal shrimp 4 0.003

Pyromaia tuberculata tuberculate pear crab 5 0.010

Panulirus interruptus California spiny lobster 1 0.238

11 0.252

Non-Shellfish

Hermissenda crassicornis hermissenda 36 0.012

Polycera atra orange-spike polycera 1 0.001

Leptopecten sp scallop, unid. 1 0.001

Pycnogonida sea spider, unid. 6 0.002

44 0.016
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-25

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI26

Start Date: June 29, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 15 0.021

Embiotoca jacksoni black perch 6 0.027

Engraulis mordax northern anchovy 1 0.001

Genyonemus lineatus white croaker 1 0.001

Heterostichus rostratus giant kelpfish 1 0.056

Phanerodon furcatus white seaperch 3 0.033

Pleuronichthys verticalis hornyhead turbot 1 0.116

28 0.255

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.002

Pyromaia tuberculata tuberculate pear crab 13 0.007

Cancer antennarius Pacific rock crab 1 0.416

Panulirus interruptus California spiny lobster 1 0.112

17 0.537

Non-Shellfish

Hermissenda crassicornis hermissenda 45 0.014

Leptopecten sp scallop, unid. 2 0.001

Flabellina trilineata threeline aeolis 1 0.001

Dirona picta spotted dirona 1 0.001

Pycnogonida sea spider, unid. 14 0.002

Parastichopus parvimensis warty sea cucumber 1 0.042

Parastichopus californicus California sea cucumber 1 0.035

65 0.096
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-26

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI27

Start Date: July 6, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 5 0.130

Genyonemus lineatus white croaker 2 0.003

Gibbonsia elegans spotted kelpfish 1 0.009

Syngnathus leptorhynchus bay pipefish 1 0.002

Urobatis halleri round stingray 4 0.797

13 0.941

Shellfish

Portunus xantusii Xantus swimming crab 1 0.040

Pyromaia tuberculata tuberculate pear crab 5 0.006

Heptacarpus paludicola California coastal shrimp 1 0.001

Panulirus interruptus California spiny lobster 1 0.343

8 0.390

Non-Shellfish

Hermissenda crassicornis hermissenda 18 0.006

Leptopecten sp scallop, unid. 1 0.005

Aplysia sp seahare, unid. 1 0.310

Pycnogonida sea spider, unid. 3 0.002

23 0.323
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-27

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI28

Start Date: July 13, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 1 0.001

Embiotoca jacksoni black perch 2 0.007

Engraulis mordax northern anchovy 2 0.001

Phanerodon furcatus white seaperch 1 0.001

Porichthys myriaster specklefin midshipman 1 0.444

Urobatis halleri round stingray 2 0.708

Paralabrax nebulifer barred sand bass 1 0.012

10 1.174

Shellfish

Heptacarpus palpator intertidal coastal shrimp 3 0.002

Pyromaia tuberculata tuberculate pear crab 4 0.002

Cancer antennarius Pacific rock crab 1 0.295

Panulirus interruptus California spiny lobster 1 0.249

9 0.548

Non-Shellfish

Hermissenda crassicornis hermissenda 5 0.003

Leptopecten sp scallop, unid. 1 0.001

Diaulula sandiegensis ring-spotted dorid 1 0.003

Pycnogonida sea spider, unid. 1 0.001

Parastichopus parvimensis warty sea cucumber 3 0.318

11 0.326
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-28

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI29

Start Date: July 20, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 4 0.007

Engraulis mordax northern anchovy 1 0.001

Urobatis halleri round stingray 8 1.599

Rhacochilus vacca pile perch 2 0.339

15 1.946

Shellfish

Portunus xantusii Xantus swimming crab 1 0.024

Pyromaia tuberculata tuberculate pear crab 20 0.013

Farfantepenaeus californiensis yellowleg shrimp 1 0.006

Panulirus interruptus California spiny lobster 2 0.422

24 0.465

Non-Shellfish

Hermissenda crassicornis hermissenda 10 0.002

Triopha maculata spotted triopha 2 0.001

Pycnogonida sea spider, unid. 28 0.002

Parastichopus parvimensis warty sea cucumber 2 0.154

Parastichopus californicus California sea cucumber 1 0.026

43 0.185
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-29

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI30

Start Date: July 27, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Gibbonsia elegans spotted kelpfish 1 0.014

Heterostichus rostratus giant kelpfish 3 0.195

Urobatis halleri round stingray 11 2.052

Paralabrax nebulifer barred sand bass 3 0.024

18 2.285

Shellfish

Heptacarpus palpator intertidal coastal shrimp 4 0.002

Pyromaia tuberculata tuberculate pear crab 8 0.007

Panulirus interruptus California spiny lobster 2 0.379

14 0.388

Non-Shellfish

Hermissenda crassicornis hermissenda 14 0.005

Aplysia californica California seahare 1 0.563

Triopha maculata spotted triopha 1 0.001

Diaulula sandiegensis ring-spotted dorid 4 0.002

Pycnogonida sea spider, unid. 25 0.003

45 0.574
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-30

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI31

Start Date: August 3, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Heterostichus rostratus giant kelpfish 1 0.098

Porichthys myriaster specklefin midshipman 1 0.327

Urobatis halleri round stingray 45 9.318

Paralabrax nebulifer barred sand bass 1 0.301

48 10.044

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.001

Pyromaia tuberculata tuberculate pear crab 7 0.013

Panulirus interruptus California spiny lobster 5 0.924

14 0.938

Non-Shellfish

Hermissenda crassicornis hermissenda 6 0.002

Triopha maculata spotted triopha 1 0.001

Diaulula sandiegensis ring-spotted dorid 1 0.002

Pycnogonida sea spider, unid. 26 0.002

Holothuroidea sea cucumber, unid. 1 0.003

35 0.010
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-31

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI32

Start Date: August 10, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 3 0.017

Embiotoca jacksoni black perch 1 0.340

Gibbonsia elegans spotted kelpfish 1 0.009

Urobatis halleri round stingray 48 9.878

Paralabrax nebulifer barred sand bass 2 0.035

55 10.279

Shellfish

Pyromaia tuberculata tuberculate pear crab 11 0.015

Panulirus interruptus California spiny lobster 7 1.113

Pandalus stenolepis roughpatch shrimp 1 0.002

19 1.130

Non-Shellfish

Hermissenda crassicornis hermissenda 3 0.002

Aurelia aurita moon jelly 1 0.010

Leptopecten sp scallop, unid. 2 0.002

Triopha maculata spotted triopha 1 0.001

Diaulula sandiegensis ring-spotted dorid 1 0.001

Pycnogonida sea spider, unid. 100 0.002

Parastichopus parvimensis warty sea cucumber 1 0.046

109 0.064
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-32

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI33

Start Date: August 17, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Heterostichus rostratus giant kelpfish 1 0.008

Urobatis halleri round stingray 21 4.670

22 4.678

Shellfish

Crangon nigromaculata blackspotted bay shrimp 1 0.001

Heptacarpus palpator intertidal coastal shrimp 2 0.001

Pyromaia tuberculata tuberculate pear crab 2 0.001

Panulirus interruptus California spiny lobster 5 0.971

Pinnixa sp pea crab, unid. 1 0.001

11 0.975

Non-Shellfish

Hermissenda crassicornis hermissenda 1 0.001

Triopha maculata spotted triopha 3 0.002

Diaulula sandiegensis ring-spotted dorid 5 0.004

Parastichopus californicus California sea cucumber 1 0.133

10 0.140
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-33

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI34

Start Date: August 24, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 1 0.002

Gibbonsia elegans spotted kelpfish 1 0.017

Heterostichus rostratus giant kelpfish 1 0.025

Urobatis halleri round stingray 45 9.163

Paralabrax nebulifer barred sand bass 2 0.030

50 9.237

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.002

Pyromaia tuberculata tuberculate pear crab 1 0.001

Panulirus interruptus California spiny lobster 11 2.301

14 2.304

Non-Shellfish

Hermissenda crassicornis hermissenda 2 0.001

2 0.001
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-34

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI35

Start Date: August 31, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Gibbonsia elegans spotted kelpfish 1 0.021

Heterostichus rostratus giant kelpfish 1 0.420

Urobatis halleri round stingray 34 7.159

Paralabrax nebulifer barred sand bass 3 0.036

39 7.636

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Pyromaia tuberculata tuberculate pear crab 2 0.004

Panulirus interruptus California spiny lobster 18 4.036

Heptacarpus sp coastal shrimp, unid. 1 0.001

Heptacarpus stimpsoni Stimpson coastal shrimp 1 0.001

23 4.043

Non-Shellfish

Hermissenda crassicornis hermissenda 4 0.002

Triopha maculata spotted triopha 1 0.001

Pycnogonida sea spider, unid. 2 0.001

Parastichopus californicus California sea cucumber 1 0.007

Mopalia muscosa mossy chiton 1 0.001

9 0.012
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-35

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI36

Start Date: September 7, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 1 0.043

Embiotoca jacksoni black perch 1 0.006

Phanerodon furcatus white seaperch 1 0.174

Urobatis halleri round stingray 36 7.360

39 7.583

Shellfish

Heptacarpus palpator intertidal coastal shrimp 3 0.002

Pyromaia tuberculata tuberculate pear crab 1 0.001

Octopus bimaculatus/bimaculoides California two-spot octopus 1 0.082

Panulirus interruptus California spiny lobster 6 1.328

11 1.413

Non-Shellfish

Diaulula sandiegensis ring-spotted dorid 1 0.001

1 0.001
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-36

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI37

Start Date: September 14, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Porichthys myriaster specklefin midshipman 1 0.209

Urobatis halleri round stingray 53 11.127

Paralabrax nebulifer barred sand bass 1 0.183

55 11.519

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.002

Panulirus interruptus California spiny lobster 4 0.875

Pandalus danae dock shrimp 1 0.001

7 0.878

Non-Shellfish

Diaulula sandiegensis ring-spotted dorid 2 0.002

2 0.002
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-37

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI38

Start Date: September 21, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Gibbonsia elegans spotted kelpfish 1 0.002

Urobatis halleri round stingray 31 6.234

32 6.236

Shellfish

Heptacarpus palpator intertidal coastal shrimp 5 0.002

Pyromaia tuberculata tuberculate pear crab 1 0.001

Panulirus interruptus California spiny lobster 3 0.465

9 0.468

Non-Shellfish

Hermissenda crassicornis hermissenda 1 0.001

1 0.001
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-38

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI39

Start Date: September 28, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 2 0.142

Gibbonsia elegans spotted kelpfish 1 0.022

Heterostichus rostratus giant kelpfish 1 0.013

Urobatis halleri round stingray 50 9.400

Rhacochilus vacca pile perch 1 0.287

Paralabrax nebulifer barred sand bass 2 0.040

57 9.904

Shellfish

Heptacarpus palpator intertidal coastal shrimp 3 0.001

Lysmata californica red rock shrimp 1 0.001

Panulirus interruptus California spiny lobster 8 1.817

12 1.819
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-39

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI40

Start Date: October 5, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Gibbonsia elegans spotted kelpfish 2 0.010

Urobatis halleri round stingray 52 9.482

54 9.492

Shellfish

Portunus xantusii Xantus swimming crab 1 0.043

Heptacarpus palpator intertidal coastal shrimp 3 0.002

Cancer anthonyi yellow crab 1 0.039

Panulirus interruptus California spiny lobster 1 0.180

6 0.264
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-40

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI41

Start Date: October 12, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 1 0.119

Gibbonsia elegans spotted kelpfish 1 0.008

Urobatis halleri round stingray 73 13.478

Paralabrax nebulifer barred sand bass 1 0.018

76 13.623

Shellfish

Heptacarpus palpator intertidal coastal shrimp 2 0.001

Pyromaia tuberculata tuberculate pear crab 1 0.001

Panulirus interruptus California spiny lobster 2 0.439

5 0.441
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-41

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI42

Start Date: October 19, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Heterostichus rostratus giant kelpfish 1 0.055

Syngnathus leptorhynchus bay pipefish 1 0.003

Urobatis halleri round stingray 65 12.647

Paralabrax nebulifer barred sand bass 1 0.014

68 12.719

Shellfish

Heptacarpus palpator intertidal coastal shrimp 3 0.002

Pyromaia tuberculata tuberculate pear crab 1 0.001

Panulirus interruptus California spiny lobster 2 0.322

6 0.325

Non-Shellfish

Hermissenda crassicornis hermissenda 1 0.001

Gastropoda gastropod, unid. 1 0.007

2 0.008
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-42

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI43

Start Date: October 26, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 1 0.211

Paralichthys californicus California halibut 1 0.145

Urobatis halleri round stingray 31 5.989

Rhacochilus vacca pile perch 1 0.178

Paralabrax nebulifer barred sand bass 1 0.009

35 6.532

Shellfish

Pyromaia tuberculata tuberculate pear crab 2 0.004

Panulirus interruptus California spiny lobster 2 0.712

4 0.716
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-43

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI44

Start Date: November 2, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Gobiesox rhessodon California clingfish 1 0.001

Urobatis halleri round stingray 89 16.259

Acanthogobius flavimanus yellowfin goby 2 0.071

Paralabrax nebulifer barred sand bass 3 0.099

95 16.430

Shellfish

Heptacarpus palpator intertidal coastal shrimp 5 0.002

Pyromaia tuberculata tuberculate pear crab 3 0.009

Cancer antennarius Pacific rock crab 1 0.098

Panulirus interruptus California spiny lobster 4 0.949

13 1.058
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-44

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI45

Start Date: November 9, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Heterostichus rostratus giant kelpfish 1 0.001

Paralichthys californicus California halibut 1 0.680

Urobatis halleri round stingray 18 3.018

Paralabrax nebulifer barred sand bass 1 0.078

21 3.777

Shellfish

Heptacarpus palpator intertidal coastal shrimp 3 0.003

3 0.003
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-45

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI46

Start Date: November 16, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Paralichthys californicus California halibut 1 0.060

Urobatis halleri round stingray 28 5.858

29 5.918

Shellfish

Heptacarpus palpator intertidal coastal shrimp 10 0.005

Pyromaia tuberculata tuberculate pear crab 1 0.001

11 0.006
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-46

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI47

Start Date: November 21, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 1 0.187

Urobatis halleri round stingray 28 6.199

Paralabrax nebulifer barred sand bass 1 0.038

30 6.424

Shellfish

Octopus bimaculatus/bimaculoides California two-spot octopus 1 0.186

1 0.186
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-47

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI48

Start Date: November 30, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 1 0.017

Urobatis halleri round stingray 42 10.070

43 10.087

Shellfish

Portunus xantusii Xantus swimming crab 1 0.008

Heptacarpus palpator intertidal coastal shrimp 4 0.002

Pyromaia tuberculata tuberculate pear crab 3 0.005

Panulirus interruptus California spiny lobster 4 0.732

12 0.747
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-48

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI49

Start Date: December 7, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Cymatogaster aggregata shiner perch 1 0.008

Embiotoca jacksoni black perch 2 0.208

Urobatis halleri round stingray 8 1.770

11 1.986

Shellfish

Heptacarpus palpator intertidal coastal shrimp 3 0.001

3 0.001
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-49

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI50

Start Date: December 14, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 1 0.024

Gillichthys mirabilis longjaw mudsucker 1 0.001

Urobatis halleri round stingray 12 2.588

Paralabrax nebulifer barred sand bass 1 0.008

15 2.621

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

Pyromaia tuberculata tuberculate pear crab 2 0.004

Panulirus interruptus California spiny lobster 2 0.473

5 0.478
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-50

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI51

Start Date: December 21, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 2 0.362

Urobatis halleri round stingray 16 3.085

Paralabrax maculatofasciatus spotted sand bass 1 0.022

19 3.469

Shellfish

Heptacarpus palpator intertidal coastal shrimp 5 0.002

Panulirus interruptus California spiny lobster 1 0.333

6 0.335
Harbor Generating Station

IM&E Final Report Appendix D: Impingement Data

D-51

Harbor Generating Station - Normal Operation Impingement Data - Fish

Survey: HGSFI52

Start Date: December 28, 2006

Survey Totals

Taxon Common Name Abundance Biomass (kg)

Fish

Embiotoca jacksoni black perch 2 0.129

Urobatis halleri round stingray 12 1.992

Tridentiger trigonocephalus chameleon goby 1 0.003

15 2.124

Shellfish

Heptacarpus palpator intertidal coastal shrimp 1 0.001

1 0.001
Harbor Generating Station

Appendix E

Master Species List

E1. Entrainment Master Species List

E2. Impingement Master Species List –Invertebrates

E3. Impingement Master Species List - Fishes
Harbor Generating Station

IM&E Final Report Appendix E1: Entrainment Species List

E1-1

Appendix E1

Master Species List of organisms identified in the

entrainment samples.

Group Taxon Common Name

Cephalopoda Loligo opalescens market squid

Decapoda unidentified crab (megalops) unid. crab megalops

Palinuridae Panulirus interruptus (phyllosome) California spiny lobster (larval)

Paguridae Paguridae unid. (megalops) hermit crab megalops

Porcellanidae Pachycheles pubescens (megalops) pubescent porcelain crab megalops

Pachycheles rudis (megalops) thickclaw porcelain crab megalops

Petrolisthes cinctipes (megalops) flat porcelain crab megalops

Petrolisthes eriomerus (megalops) flattop crab megalops

Petrolisthes spp. (megalops) porcelain crab megalops

Porcellanidae unid. (megalops) porcelain crab megalops

Diogenidae Diogenidae (megalops) left-handed hermit crabs megalops

Brachyura Brachyura unid. (megalops) unidentified crab megalops

Grapsidae / Cancridae (megalops) unidentified crab megalops

Majidae Majidae unid. (megalops) spider crab megalops

Pugettia spp. (megalops) kelp crabs megalops

Cancridae Cancer antennarius (megalops) brown rock crab megalops

Cancer anthonyi (megalops) yellow crab megalops

Cancer gracilis (megalops) slender crab megalops

Cancer productus (megalops) red rock crab megalops

Cancer spp. (megalops) cancer crabs megalops

Xanthidae Lophopanopeus spp. (megalops) black-clawed crab megalops

Pinnotheridae Pinnixa spp. (megalops) pea crabs megalops

Pinnotheres spp. (megalops) pea crab megalops

Pinnotheridae (megalops) pea crab megalops

Grapsidae Grapsidae unid. (megalops) shore crab megalops

Hemigrapsus nudus (megalops) purple shore crab megalops

Hemigrapsus oregonensis (megalops) yellow shore crab megalops

Hemigrapsus spp. (megalops) shore crab megalops

Pachygrapsus crassipes (megalops) striped shore crab megalops

Actinopterygii fish eggs unid. unidentified fish eggs

larvae, unidentified yolksac unidentified yolksac larvae

larval fish - damaged unidentified larval fishes

larval fish fragment unidentified larval fishes

larval/post-larval fish unid. larval fishes

unidentified fish, damaged unidentified damaged fish

Acanthopterygii Sciaenidae / Paralichthyidae / Labridae (eggs) fish eggs

(table continued)
Harbor Generating Station

IM&E Final Report Appendix E1: Entrainment Species List

E1-2

Appendix E1 (continued). Master Species List of organisms identified in the entrainment samples.

Group Taxon Common Name

Clupeidae Clupeidae unid. herrings

Sardinops sagax Pacific sardine

Engraulidae Engraulidae unid. anchovies

Engraulidae unid. (eggs) anchovy eggs

Engraulis mordax northern anchovy

Bathylagidae Bathylagus ochotensis popeye blacksmelt

Leuroglossus spp. smoothtongues

Leuroglossus stilbius California smoothtongue

Myctophidae Diaphus theta California headlight fish

Myctophidae unid. lanternfishes

Stenobrachius leucopsarus northern lampfish

Triphoturus mexicanus Mexican lampfish

Gobiesocidae Gobiesocidae unid. clingfishes

Gobiesocidae Gobiesox spp. clingfishes

Merlucciidae Merluccius productus Pacific hake

Atherinopsidae Atherinops affinis topsmelt

Atherinopsidae unid. silversides

Atherinopsidae unid. (eggs) silverside eggs

Atherinopsis californiensis jacksmelt

Leuresthes tenuis California grunion

Syngnathidae Syngnathus leptorhynchus bay pipefish

Syngnathus spp. pipefishes

Scorpaenidae Sebastes spp. rockfishes

Hexagrammidae Hexagrammidae unid. greenlings

Oxylebius pictus painted greenling

Zaniolepis frenata shortspine combfish

Zaniolepis spp. combfishes

Artedius harringtoni scalyhead sculpin

Cottidae Artedius lateralis smoothhead sculpin

Chitonotus / Icelinus sculpins

Chitonotus pugetensis roughback sculpin

Clinocottus analis wooly sculpin

Cottidae unid. sculpins

Icelinus quadriseriatus yellowchin sculpin

Icelinus spp. sculpins

Leptocottus armatus Pacific staghorn sculpin

Oligocottus / Clinocottus sculpins

Oligocottus spp. sculpins

Orthonopias triacis snubnose sculpin

Ruscarius creaseri roughcheek sculpin

Scorpaenichthys marmoratus cabezon

Scorpaenidae Sebastes spp. rockfishes

(table continued)
Harbor Generating Station

IM&E Final Report Appendix E1: Entrainment Species List

E1-3

Appendix E1 (continued). Master Species List of organisms identified in the entrainment samples.

Group Taxon Common Name

Serranidae Paralabrax spp. sand bass

Sciaenidae Cheilotrema saturnum black croaker

Genyonemus lineatus white croaker

Genyonemus lineatus (eggs) white croaker eggs

Menticirrhus undulatus California corbina

Roncador stearnsii spotfin croaker

Sciaenidae unid. croakers

Sciaenidae unid. (eggs) croaker eggs

Seriphus politus queenfish

Umbrina roncador yellowfin croaker

Kyphosidae Girella nigricans opaleye

Pomacentridae Hypsypops rubicundus garibaldi

Pomacentridae unid. damselfishes

Sphyraenidae Sphyraena argentea Pacific barracuda

Labridae Halichoeres semicinctus rock wrasse

Labridae unid. wrasses

Oxyjulis californica senorita

Semicossyphus pulcher California sheephead

Bathymasteridae Bathymasteridae unid. ronquils

Blenniidae Hypsoblennius gilberti rockpool blenny

Hypsoblennius jenkinsi mussel blenny

Hypsoblennius spp. combtooth blennies

Clinidae Gibbonsia spp. clinid kelpfishes

Paraclinus spp. clinid

Chaenopsidae Chaenopsidae unid. tube blennies

Stichaeidae Stichaeidae unid. pricklebacks

Labrisomidae Labrisomidae unid. labrisomid blennies

Gobiidae Acanthogobius flavimanus yellowfin goby

Gillichthys mirabilis longjaw mudsucker

Gobiidae unid. gobies

Ilypnus gilberti cheekspot goby

Lepidogobius lepidus bay goby

Lythrypnus spp. gobies

Lythrypnus zebra zebra goby

Rhinogobiops nicholsii blackeye goby

Typhlogobius californiensis blind goby

Stromateidae Peprilus simillimus Pacific butterfish

Pleuronectiformes Pleuronectiformes unid. flatfishes

Pleuronectidae Isopsetta isolepis butter sole

Lyopsetta exilis slender sole

Parophrys vetulus English sole

Pleuronectidae unid. righteye flounders

(table continued)
Harbor Generating Station

IM&E Final Report Appendix E1: Entrainment Species List

E1-4

Appendix E1 (continued). Master Species List of organisms identified in the entrainment samples.

Group Taxon Common Name

Pleuronectidae Pleuronichthys guttulatus diamond turbot

Pleuronichthys ritteri spotted turbot

Pleuronichthys spp. turbots

Pleuronichthys spp. (eggs) turbot eggs

Pleuronichthys verticalis hornyhead turbot

Paralichthyidae Citharichthys sordidus Pacific sanddab

Citharichthys spp. sanddabs

Citharichthys spp. (eggs) sanddab eggs

Citharichthys stigmaeus speckled sanddab

Paralichthyidae unid. sand flounders

Paralichthyidae unid. (eggs) sand flounder eggs

Paralichthys californicus California halibut

Paralichthys californicus (eggs) California halibut eggs

Xystreurys liolepis fantail sole
Harbor Generating Station

IM&E Draft Report Appendix E2: Impingement Species List - Invertebrates

E2-1

Appendix E2

Master Species List of Invertebrates Identified in

Impingement Samples

Group Taxon Common Name

Cnidaria Cnidaria sea jelly, unid.

Polyorchidae Scrippsia pacifica giant bell jelly

Ulmaridae Aurelia aurita moon jelly

Ctenophora Ctenonophora comb jelly, unid.

Gastropoda Gastropoda gastropod, unid.

Aplysiidae Aplysia californica California seahare

Aplysia spp. seahare, unid.

Aglajidae Navanax inermis California aglaja

Pleurobranchidae Pleurobranchaea californica California sea slug

Archidorididae Archidoris montereyensis Monterey sea-lemon

Discodorididae Anisodoris nobilis Pacific sea-lemon

Diaulula sandiegensis ring-spotted dorid

Discodorididae nudibranch, unid.

Polyceratidae Triopha maculata spotted triopha

Polyceridae Polycera atra orange-spike polycera

Polycera hedgpethi Hedgpeth's polycera

Dendronotidae Dendronotus frondosus leafy dendronotid

Dendronotus iris giant-frond-aeolis

Dironidae Dirona picta spotted dirona

Flabellinidae Flabellina trilineata threeline aeolis

Tergipedidae Cuthona lagunae orange-faced nudibranch

Facelinidae Hermissenda crassicornis hermissenda

Pectindae Leptopecten spp. scallop, unid.

Octopodidae Octopus bimaculatus/bimaculoides California two-spot octopus

Pycnogonida Pycnogonida sea spider, unid.

Ammotheaidae Ammothea hilgendorfi sea spider

Penaeidae Farfantepenaeus californiensis yellowleg shrimp

Pandalidae Pandalus danae dock shrimp

Pandalus stenolepis roughpatch shrimp

Hippolytidae Heptacarpus palpator intertidal coastal shrimp

Heptacarpus paludicola California coastal shrimp

Heptacarpus spp. coastal shrimp, unid.

Heptacarpus stimpsoni Stimpson coastal shrimp

Lysmata californica red rock shrimp

Crangonidae Crangon nigromaculata blackspotted bay shrimp

Palinuridae Panulirus interruptus California spiny lobster

Majidae Pyromaia tuberculata tuberculate pear crab

(table continued)
Harbor Generating Station

IM&E Draft Report Appendix E2: Impingement Species List - Invertebrates

E2-2

Appendix E1 (continued). Master Species List of invertebrates identified in the impingement samples.

Group Taxon Common Name

Cancridae Cancer antennarius Pacific rock crab

Cancer anthonyi yellow crab

Portunidae Portunus xantusii Xantus swimming crab

Grapsidae Hemigrapsus oregonensis yellow shore crab

Pinnotheridae Pinnixa spp. pea crab, unid.

Asteriidae Pisaster spp. sea star, unid.

Holothuroidea Holothuroidea sea cucumber, unid.

Stichipodidae Parastichopus californicus California sea cucumber

Parastichopus parvimensis warty sea cucumber

Parastichopus spp. sea cucumber, unid.

Molpadiidae Molpadia muscosa mossy chiton
Harbor Generating Station

IM&E Draft Report Appendix E3: Impingement Species List - Fishes

E3-1

Appendix E3

Master Species List of fishes identified in the impingement

samples.

Group Taxon Common Name

(Chondrichthyes) cartilaginous fishes

Urolophidae Urobatis halleri round stingray

(Actinopeterygii) ray-finned fishes

Engraulidae Engraulis mordax northern anchovy

Batrachoididae Porichthys myriaster specklefin midshipman

Porichthys notatus plainfin midshipman

Atherinopsidae Atherinops affinis topsmelt

Syngnathidae Syngnathus leptorhynchus bay pipefish

Cottidae Icelinus quadriseriatus yellowchin sculpin

Leptocottus armatus Pacific staghorn sculpin

Serranidae Paralabrax maculatofasciatus spotted sand bass

Paralabrax nebulifer barred sand bass

Sciaenidae Genyonemus lineatus white croaker

Embiotocidae Cymatogaster aggregata shiner perch

Embiotoca jacksoni black perch

Embiotocidae surfperch, unid.

Hyperprosopon argenteum walleye surfperch

Phanerodon furcatus white seaperch

Rhacochilus vacca pile perch

Clinidae Gibbonsia elegans spotted kelpfish

Heterostichus rostratus giant kelpfish

Gobiesocidae Gobiesox rhessodon California clingfish

Gobiidae Acanthogobius flavimanus yellowfin goby

Gillichthys mirabilis longjaw mudsucker

Tridentiger trigonocephalus chameleon goby

Paralichthyidae Paralichthys californicus California halibut

Pleuronectidae Pleuronichthys verticalis hornyhead turbot