Document ID: EPA-HQ-OW-2008-0667-2749
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2012-06-11T04:00Z

Table 1

Cooling Water Volumes for Bay Shore Power Plant

 (April 2005 – December 2006)

Table 1 (cont’d)

Cooling Water Volumes for Bay Shore Power Plant

 (April 2005 – December 2006)

Table 1 (cont’d)

Cooling Water Volumes for Bay Shore Power Plant

 (April 2005 – December 2006)

Table 1 (cont’d)

Cooling Water Volumes for Bay Shore Power Plant

 (April 2005 – December 2006)

Table 1 (cont’d)

Cooling Water Volumes for Bay Shore Power Plant

 (April 2005 – December 2006)

Table 1 (cont’d)

Cooling Water Volumes for Bay Shore Power Plant

 (April 2005 – December 2006)

Table 1 (cont’d)

Cooling Water Volumes for Bay Shore Power Plant

 (April 2005 – December 2006)

Table 2.  Estimated Source of Cooling Water for Bay Shore Plant

Table 3

Water Quality and Meteorological Data Collected During Impingement &
Entrainment Sampling 

at Bay Shore Power Plant (May 2005 – December 2006) 

Table 3 (cont’d)

Water Quality and Meteorological Data Collected During Impingement &
Entrainment Sampling 

at Bay Shore Power Plant (May 2005 – December 2006) 

Table 3 (cont’d)

Water Quality and Meteorological Data Collected During Impingement &
Entrainment Sampling 

at Bay Shore Power Plant (May 2005 – December 2006) 

Table 3 (cont’d)

Water Quality and Meteorological Data Collected During Impingement &
Entrainment Sampling 

at Bay Shore Power Plant (May 2005 – December 2006) 

Table 3 (cont’d)

Water Quality and Meteorological Data Collected During Impingement &
Entrainment Sampling 

at Bay Shore Power Plant (May 2005 – December 2006) 

 

Diel Distribution of Entrained Specimens

The diel distribution of larval and juvenile fish was recorded as part
of the entrainment abundance study.  The majority (99%) of these fish
were larvae. A detailed summary of entrainment densities is presented in
Table 4.  A peak density of 171 specimens per m3 was observed during the
night sampling event of June 13, 2005.  The majority of larvae collected
on this date (66%) were identified as freshwater drum.  Mean monthly
densities of larval and juvenile fish, are presented in Figure 1.

	Table 4	

Diel Distribution of Larval and Entrainable Juvenile Fish Entrained at 

Bay Shore Power Plant (May 2005 – May 2006)



Figure 1

Diel Distribution of Larval and Entrainable Juvenile Fish Entrained at 

Bay Shore Power Plant (May 2005 – May 2005)

Long-Term Survival Studies

A total of six long-term survival studies were conducted over the
duration of the impingement abundance study:

The first long-term survival study was initiated on August 24, 2005.  
The holding tanks for this study were split into two sections with wire
mesh to create 4 separate holding areas.  A total of 345 fish (12
species) were collected and evaluated for this study.  Immediately upon
collection, 199 fish (58%) were categorized as dead and 146 fish (42%)
were categorized as live. Of the 146 live fish evaluated for long-term
survival, only 4 fish (3%) survived 48-hours after being impinged at Bay
Shore.  Details of this survival study are summarized in Table 5.

The second long-term survival study was initiated on October 30, 2005. A
total of 1,324 fish (11 species) were collected and evaluated for this
study.  Immediately upon collection, 721 fish (54%) were categorized as
dead and 603 fish (46%) were categorized as live. These fish were split
among 3 different holding tanks.  Of the 603 live fish evaluated for
long-term survival, a total of 29 fish (5%) survived 48-hours after
being impinged at Bay Shore.  Details of this survival study are
summarized in Table 6.

The third long-term survival study was initiated on February 24, 2006. A
total of 250 emerald shiners were collected and evaluated for this
study.  Immediately upon collection, 90 fish (36%) were categorized as
dead and 160 fish (64%) were categorized as live. These fish were split
among 5 different holding tanks.  Of the 160 live fish evaluated for
long-term survival, a total of 53 fish (33%) survived 48-hours after
being impinged at Bay Shore.  Details of this survival study are
summarized in Table 7.

The fourth long-term survival study was initiated on May 4, 2006. A
total of 250 emerald shiners were collected and evaluated for this
study.  Immediately upon collection, 37 fish (15%) were categorized as
dead and 213 fish (85%) were categorized as live. These fish were split
among 5 different holding tanks.  Of the 213 live fish evaluated for
long-term survival, a total of 78 fish (37%) survived 48-hours after
being impinged at Bay Shore.  Details of this survival study are
summarized in Table 8.

The fifth long-term survival study was initiated on November 15, 2006. A
total of 105 live white perch were collected and evaluated for this
study.  These fish were split among 5 different holding tanks (15-25
fish per tank).  A total of 31 fish (30%) survived 48-hours after being
impinged at Bay Shore.  Details of this survival study are summarized in
Table 9.

The sixth long-term survival study was initiated on November 29, 2006. A
total of 250 emerald shiners were collected and evaluated for this
study.  Immediately upon collection, 90 fish (36%) were categorized as
dead and 160 fish (64%) were categorized as live. These fish were split
among 5 different holding tanks.  Of the 160 live fish evaluated for
long-term survival, a total of 53 fish (33%) survived 48-hours after
being impinged at Bay Shore.  Details of this survival study are
summarized in Table 10.

Table 5

Long-Term (48-Hour) Survival Study #1

(August 24-26, 2005)



Table 6

Long-Term (48-Hour) Survival Study #2

(October 30-November 1, 2005)

Table 7

Long-Term (48-Hour) Survival Study #3

(February 24-26, 2006)

Table 8

Long-Term (48-Hour) Survival Study #4

(May 4-6, 2006)

Table 9

Long-Term (48-Hour) Survival Study #5

(November 15 – 17, 2006)



Table 10

Long-Term (48-Hour) Survival Study #6

(November 29 – December 1, 2006)

 

Entrainment Data Analysis

Entrainment data were converted to a 24-hour collection period by
adjusting for sample volumes and the corresponding volume through the
screenhouse.  To calculate the base density of entrained eggs/larval
fish ((e-base), the number entrained during each sampling period was
divided by the corresponding sampling volume.    This is expressed as:

(e-base  =     Ni / Vi

where:

(e-base  	=   Base entrainment density (#/m3)

Ni 	=   Total number of eggs/larval fish entrained (10 daily samples) 

Vi	=   Total volume of water filtered for 10 daily samples (m3).  

Base entrainment densities were multiplied by daily flow volumes to
obtain entrainment estimates for each day.  Sample calculations for
entrained fish eggs are presented in Table 11.  Monthly entrainment
estimates were calculated using the following formula:

Estimated Number	  =    Monthly Number of Organisms   x  Total Monthly
Flow

Entrained per Month		   Monthly Sample Volume

Impingement Data Analysis

Impingement data were converted to a 24-hour collection period by
adjusting for sample duration (e.g. 24/1) and the number of active
traveling screens (e.g. 9/4).   Sample calculations are presented in
Table 12.  Monthly impingement estimates were calculated using the
following formula:

Estimated Number	  =          Monthly Number of Fish    x  Total Monthly
Flow

Impinged per Month		   Monthly Sample Volume

Table 11

Estimated Daily Entrainment of Fish Eggs at Bay Shore Power Plant (May
2005 – May 2006)

Individual estimates may not add to totals due to rounding.

Table 12

Estimated Daily Impingement of Fish at Bay Shore Power Plant

 (May 2005 – December 2006)

 Individual estimates may not add to totals due to rounding.

 This approach was discontinued as it was not possible to prevent fish
from swimming through the mesh dividers into a different holding area.

 Daily cooling water flow volumes (MGD) were obtained from the Monthly
Operating Report (MOR) for Bay Shore and are summarized in Table 1.  

 While there are nine (9) functional traveling screens at Bay Shore, two
(2) screens are only turned infrequently (¼-hour to ½-hour per day). 
The traveling screen adjustment for this assessment was estimated
conservatively and assumed that all nine (9) screens were active.  

                                                                        
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