Citation
Performance of the midtown Palm Beach P. E. P. reef installation

Material Information

Title:
Performance of the midtown Palm Beach P. E. P. reef installation seventeen months results, August 1993 to December 1994
Series Title:
UFLCOEL-95004
Alternate title:
Performance of the midtown Palm Beach Prefabricated Erosion Prevention reef installation
Creator:
Dean, Robert G ( Robert George ), 1930-
Chen, Renjie
University of Florida -- Coastal and Oceanographic Engineering Dept
Place of Publication:
Gainesville Fla
Publisher:
University of Florida, Coastal & Oceanographic Engineering Dept.
Publication Date:
Language:
English
Physical Description:
1 v. (various pagings) : ill. ; 28 cm.

Subjects

Subjects / Keywords:
Artificial reefs -- Florida -- Palm Beach ( lcsh )
Shore protection -- Florida -- Palm Beach ( lcsh )
Genre:
bibliography ( marcgt )
non-fiction ( marcgt )

Notes

Bibliography:
Includes bibliographical references.
General Note:
"February 1995."
Statement of Responsibility:
Robert G. Dean and Renjie Chen.

Record Information

Source Institution:
University of Florida
Holding Location:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
33325057 ( oclc )

Full Text






UFL/COEL-95/004

PERFORMANCE OF THE MIDTOWN PALM BEACH P.E.P. REEF INSTALLATION SEVENTEEN MONTHS RESULTS AUGUST 1993 TO DECEMBER 1994
by
Robert G. Dean and
Renjie Chen

February, 1995




PERFORMANCE OF THE MIDTOWN PALM BEACH P.E.P. REEF INSTALLATION SEVENTEEN MONTHS RESULTS AUGUST 1993 TO DECEMBER 1994 February 1995
Robert G. Dean and
Renjie Chen
University of Florida Coastal & Oceanographic Engineering Department Gainesville, Florida




TABLE OF CONTENTS
PAGE
A D V AN CE SU M M A R Y ...................................................................................................................................... 1
INTRODUCTION ...................................................................................................................................... I
W AVE TRANSM ISSION ..... ; .................................................................................................................... I
SEDIM ENT VOLUM E CHANGES ......................................................................................................... 2
SETTLEM ENT OF UNITS ....................................................................................................................... 2
SCOUR ........................................................................................................................................................ 2
CONTING ENCY PLAN ............................................................................................................................ 3
SUM M ARY STATEM ENT ....................................................................................................................... 3
ACKNOW LEDGM ENTS .......................................................................................................................... 3
IN TR O D U CTIO N ................................................................................................................................................. 4
W A VE D A TA A N A LY SIS .................................................................................................................................. 4
W AVE H EIGHT REDUCTION ............................................................................................................... 4
SED IM EN T CO N SIDER ATIO N S .................................................................................................................... 5
LONGSHORE SHORELINE CHANGE DISTRIBUTIONS ................................................................. 7
LONGSHORE VOLUME CHANGE DISTRIBUTION ......................................................................... 8
ELEVATION CHANGES .......................................................................................................................... 9
PROFILE CHANGES .............................................................................................................................. 13
VOLUM E CHANGES BY ZONES ......................................................................................................... 17
VOLUM ETRIC CHANGES OVER TIM E ............................................................................................ 19
SETTLEM EN T CO N SIDER ATIO N S ........................................................................................................... 21
SCO UR R O D RESU LTS .................................................................................................................................. 22
CO N TIN G EN CY PLA N S .................................................................................................................................. 23
SUM M A R Y A N D CO N CLU SIO N S ................................................................................................................ 25
REFER EN CES .................................................................................................................................................... 26
A PPEN D IX I W ave Gage Data (July Septem ber, 1994) ............................................................................ 1-1
APPEN D IX 11 P.E.P. Reef Top of Structure Elevation Data ....................................................................... 11-2
APPENDIX III a). Tabulation of Volumetric Changes on Survey Profiles ............................................... III-1
b). Tabulation of Volume Changes Between Survey Profiles .......................................... III-1
c). Tabulation of Elevation Changes between Survey Profiles ........................................ 111-1




ADVANCE SITMMARV

INTRODUCTION
This report presents the performance results of the Midtown Palm Beach Prefabricated Erosion Prevention (PEP) Reef monitoring program extending from July 1992 through December 1994, including the effects of Tropical Storm Gordon. Construction of the Reef began in July 1992 and installation of the first 57 units was completed in August 1992. Installation of the remaining 273 units was completed in August 1993. This report extends, through December 1994, the analysis and interpretation presented in the First Six Months Report (Dean et al., (1994a)) and Twelve Months Report (Browder et al., (1994b)). Two recent profile and offshore surveys are available for November 1994 and December 1994, the latter encompassing the effects of Tropical Storm Gordon which affected the Palm Beach area on November 14 and 15, 1994. Wave gages are located landward and seaward of the Reef in water depths of approximately 6 and 13 feet, respectively, and have provided complete data from October 1993 through September 1994. Various data analysis methods were applied herein to further quantify the Reef performance.
WAVE TRANSMISSION
During the period which is the focus of this report, a study was initiated to quantify more completely the wave height reduction characteristics caused by the Reef. First, from September 20 through October 7, two additional gages were installed adjacent to the longer tenu gages which are located landward and seaward of the Reef. From October 7 through October 23, the gages were relocated to approximately 500 feet south of the Reef in approximately the same water depths and at approximately the same separation distance as the longer-term wave gages. The results of analyzing these data indicate that the transmission coefficients resulting from the presence of the Reef are in the range: 85% to 95%, considerably larger than determined from analysis of the two longer term gages alone (65% to 85%) as shown in Figure 1. The latter values indicate greater energy reduction than predicted by laboratory tests. Apparently wave energy dissipation occurs between the locations of the two gages even in the absence of the Reef. The transmission coefficients for August and September 1994 are 0.97 and 0.99, respectively (Table 1). It is believed that these anomalously high values of transmission coefficients are due to one of the gages losing calibration. The longer term




gages were damaged by Tropical Storm Gordon and are now being refurbished.
SEDIMENT VOLUME CHANGES
Sediment continues to be eroded from within the 4,000 feet confines landward of the Reef. The losses landward of the Reef were: 88,000 yds' from July 1992 through December 1994, and 67,000 cubic yards from August 1993 through December 1994 amounting to average scour depths of approximately 30 inches and 22 inches, respectively. The additional volumetric losses during the two most recent intersurvey periods were: 19,300 yds' (July to November 1994) and 10,000 yds3 (November to December 1994). The segment 2,000 feet south and landward of the Reef consistently gained material from July 1992 to July 1994, but experienced losses from July 1994 to December 1994. Losses have generally occur-red seaward of the Reef both within the 4,000 foot Reef confines and 2,000 feet north and south of the Reef, although during some intersurvey periods, deposition has occurred. These overall losses seaward of the Reef are approximately one-half those that have occurred landward of the Reef alignment.
SETTLEMENT OF UNITS
The average settlement has been updated with the November and December 1994 surveys (Figure 19). The first 57 units have settled an average of 2.71 feet and the remaining 273 units have settled an average of 1.87 feet. The slight increase (0.02 feet) in average elevation of the 57 units relative to the July 1994 value is believed to be due to either incomplete removal of biological growth for purposes of the surveys or to small survey errors. The decrease (0.27 feet) in elevation of the remaining 273 units occurred during Tropical Storm Gordon and is primarily a result of settlement of the 15 southerly units that were placed last. The maximum settlement experienced by a single unit during Tropical Storm Gordon was 2.07 feet. This unit is the third from the south end of the Reef system.
SCOUR
The scour rods indicate scour depths ranging from 0.0 feet to 1.4 feet over the period June 3, 1994 to September 9, 1994, a period of 110 days (Figure 20).




CONTINGENCY PLAN
To provide a basis for assessing the performance of the P.E.P. Reef installation, conditions were established on various parameters prior to installation of the Reef, which if not met, could occasion consideration by DEP and/or the Town of Palm Beach to modify or remove the installation. These conditions, termed "performance criteria", herein are presented in Table 3 where the established and measured performance criteria are compared. Of the nine parameters, five are found to meet the performance criteria, three do not and one is not relevant (Table 3). The five meeting the performance criteria are: (1) Wave height reduction, (2) alignment of units, (3) Increase in longshore current, (4) Increase in rip current, and (5) Biological impacts. The three parameters not meeting the performance criteria are: (1) Sediment accumulation, (2) Shoreline change, and (3) Settling of units.
SUMMARY STATEMENT
The results and interpretation presented herein are based on surveys in the period July 1992, to December 1994 and on data reported previously. Analysis of results from future planned monitoring will continue to contribute to the overall understanding of the Reef performance.
ACKNOWLEDGMENTS
The authors appreciate the sponsorship of this study supported by the Department of Environmental Protection and the Town of Palm Beach. Sea Systems, Inc., of Pompano Beach, FL., carried out the surveys in a responsive and professional manner.




INTRODUCTION
This report updates the performance of the Midtown Palm Beach Prefabricated Erosion Prevention (PEP) Reef for the five month period from July 1994 to December 1994. Two additional surveys are included. These were conducted by Sea Systems, Inc., in November and December 1994. The first survey was completed a few days prior to Tropical Storm Gordon and the second survey was commenced a few days after the passage of Gordon. This report follows the format of the First Six and Twelve Months Reports, and the reader is referred to these reports for more information and description of the Reef monitoring program. This report is organized as follows. The first five sections present results from analysis of the wave data, profile surveys, settlement and scour surveys, and evaluation of contingency plans. The final section provides a summary and preliminary interpretations from the data available to date. The appendices include raw data from the wave analysis and profile measurements.
WAVE DATA ANALYSIS
The full installation of the PEP Reef structure was completed in August 1993. The wave data landward and seaward of the Reef have been collected by wave gages hourly since midOctober, 1993. Those data have been analyzed in the Florida Coastal Data Network (FCDN) format and stored in the Coastal & Oceanographic Engineering Laboratory (COEL) database. This section abstracts the wave data and displays wave transmission coefficient data.
WAVE HEIGHT REDUCTION
One of the main objectives of a submerged breakwater is to reduce wave height (wave energy) transmitted over the structure. In order to quantity the reduction of wave height, the transmission coefficients were determined as follows:
Kt = Hs nearshore
Hs offshore shoa led (
Where Kt = transmission coefficient, Hs nearshore = nearshore significant wave height, and




Hs offshore shoaled = the offshore significant wave height shoaled in accordance with linear wave theory. Table 1 lists the average significant wave height and transmission coefficient for the period December 1993 through September 1994. Figure 1 and 2 present the transmission coefficients for the nine month period of January to September 1994.

Table 1

Monthly Averaged significant wave height Wave Data in Feet

Month JiHs Offshore H Nearshore IF HI Shoaled II Kt
December 932.10 1.84 2.43 0.76
January 94 2.30 2.07 2.66 0.78
February 94 1.97 1.77 2.26 0.78
March 94 1.67 1.51 1.94 0.78
April 94 1.84 1.67 2.00 0.84
May 94 1.28 1.12 1.44 0.78
June 94 0.79 0.69 0.85 0.81
July 94 0.98 0.89 1.02 0.87
August 94 1.05 1.08 1.11 0.97
September 94 1.12 1.21 1.18 0.99 1
For December 1993 through July 1994, the monthly average K, for each month varies over a fairly small range, from 0.78 to 0.87. The transmission coefficients for August and September 1994 are significantly higher than for previous months. It is believed that the explanation for this is that one of the gages has lost calibration. The raw wave data for July through September 1994 are presented in Appendix I.
SEDIMENT CONSIDERATIONS
This section discusses shoreline changes, elevation changes, profile changes and zone volume changes within the study areas. Tropical Storm Gordon impacted the P.E.P. study areas in mid-November 1994; the purpose of the survey carried out in late November and




0.8
0.6
0.4 0.2 0.0
Figure 1
1.0 0.8 0.6 0.4 0.2

0 20 40 60 80Datet10 121 141 161 181
Wave Transmission Coefficients Based on Significant Waves Height January-June 1994

0 .0 1 '- 1 r' I I- I I _-7 I -I- I I 1 I
183 193 203 214 224 234 244 255 265 Date
Figure 2 Wave Transmission Coefficients Based on Significant Waves Height July 1994 -September 1994

275




early December 1994 was mainly to document the particular effects of that storm. As mentioned before, construction of the Reef commenced in July 1992 and 57 units had been placed by mid-August 1992 when Hurricane Andrew affected the area. The remaining 273 units were installed by August 1993. Therefore, the comparisons in this section are for four periods as follows: July 1994 to November 1994; November 1994 to December 1994; July 1992 to December 1994 (Total period during which any units were installed); and August 1993 to December 1994 (Period during which all units were installed).
LONGSHORE SHORELINE CHANGE DISTRIBUTIONS The changes in Mean High Water (MHW) shoreline positions are illustrated in Figure 3. Table 2 presents the average shoreline changes for the intersurvey periods and the cumulative shoreline changes for the 4,000 feet landward of the Reef and for the 2,000 foot segments north and south of the Reef. The elevation of MHW is +1.87 feet NGVD. For the two most recent intersurvey periods, the shoreline changes are reasonably small within the Reef confines. The largest changes are in the 2,000 foot segment south of the Reef where a considerable recession occurs. The overall changes
S 150 i :
Reef
1 0 0 .. .. ..
50
S-50
.... 07 /94-11/94
bO -- - 11/94 12/94
f" -100 .-".- i / 92 1294
09/93-12/94
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
-Distance from monument 92F (ft)
Figure 3 Longshore Distribution of Mean High Water shoreline changes




from July 1992 to December 1994 and August 1993 to December 1994 are recessional landward of the Reef. From July 1992 to December 1994, there has been a net shoreline advancement in the 2,000 feet south of the Reef; however, from March 1994 to December 1994, this segment has experienced a net recession. Referring to Table 2, the average shoreline changes for the two most recent intersurvey periods are relatively small except in the south segment where the changes are relatively large. It is important to note that of the 4,000 foot shoreline segment immediately landward of the Reef, at least 2,000 feet has receded back to the seawalls and thus cannot recede farther.

Table 2

Landward of Reef Alignment Average Shoreline Changes in feet

LONGSHORE VOLUME CHANGE DISTRIBUTION
This section presents the distribution of volume changes per lineal foot (yds3lf) both landward and seaward of the Reef along the 9,800 feet of monitored shoreline. These results are based on the volume changes occurring for each of the profile lines between monitoring surveys. Appendix III-a presents a tabulation of the volume changes on profile line for inner and outer profile sections; Appendix III-b represents a tabulation of volume changes between profile lines for inner and outer cells. A tabulation of the mean elevation changes between profile lines is also included in Appendix III-C.

North 2000 ft Reef 4000 ft South 2000 ft
Survey T '
Months Intersurvey J Cumulative Intersurvey I Cumulative Intersurvey I Cumulative
Periods 11
change change change I change change I change
07/92-04/93 9 -18.91 -18.19 -9.79 -9.79 38.11 38.11
I + i
04/93-08/93 13 4.18 -14.72 6.87 1 -2.92 0.08 1 38.19
I + I
08/93-12/93 17 13.38 -1.34 -0.76 1 -3.68 14.82 I 53.01
F + I
12/93-03/94 20 -18.68 -20.02 -5.41 1 -9.09 8.9 61.91
F + I
03/94-07/94 24 -2.41 1-22.43 -11.13 -20.22 -11.31 50.60
F + I
07/94-11/94 28 3.03 1 -19.40 4.40 1 -15.82 -14.26 1 36.34
I I I
11/94-12/94 29 -5.93 [-25.33 -3.94 -19.76 -7.02 29.32




Figure 4 depicts the volumetric changes per lineal foot for the inner regions (landward of the Reef alignment) for the periods noted earlier. The period July 1994 to November 1994 shows areas of gains and losses, with the greatest fluctuations at the Clark Avenue beach and near the northern end of the monitored region. The greatest overall changes during these periods are the gains near the northern end of the monitored region and the consistent losses near the south end of the Reef. From July 1992 to December 1994 and August 1993 to December 1994, the greatest changes have been the erosion occurring landward of the Reef reaching losses of 45 ydS3 in the Clark Avenue area for the (July 1992 to December 1994) period.
Figure 5 shows the volume changes per linear foot for the outer region (seaward of Reef). The volume changes in this region fluctuate and are relatively small compared to the inner region, varying between -25 yds'/If and +20 ydS3/lf. The greatest change is erosional and occurred immediately south of the Reef.
ELEVATION CHANGES
The elevation changes both landward, seaward and adjacent to the Reef will be presented in a quantitative and also in a qualitative manner, as illustrated in Figures 6 through 9. The two dimensional contour plots represent the changes (in feet) that occurred between monitoring surveys in which the areas of accretion (solid lines) and erosion (dashed lines) are indicated.
July 1994 to November 1994
Figure 6 shows the elevation changes that occurred between the quarterly surveys of July 1994 and November 1994. This figure indicates that material has accreted up to 4.0 feet at the 500 foot location. The Twelve Month Report found that this area lost up to 4.0 feet elevation for the December 1993 to March 1994 intersurvey period. Another noticeable characteristic change is the accumulation of material at the Clarke Avenue pocket beach with a peak gain of 3.0 feet. As seen in Figure 3, the shoreline had advanced seaward to a maximum change of 27 feet at this location for the July 1994 to November 1994 period. From the AT&T gap south extending to 6,000 feet, elevation decreases up to 2.0 feet have occurred. To the north of the study area, the elevation changes fluctuate, but are predominantly negative. This period shows large overall changes, reflecting the strong wave climate during this period. The area immediately south and landward of the Reef experienced elevation decreases of up to 2 feet.




50 40 30 20 10
0
-10
-20
-30
-40
-50

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 100
--*-- North Distance from monument 92F (ft)
Figure 4 Longshore Distribution of the Volume Change for the Inshore Region

50 40 30 20 10
0
-10
-20
-30
-40
-50

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 1000(
-..- North Distance from monument 92F (ft)
Figure 5 Longshore Distribution of the Volume Change for the Offshore Region




0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
--- North Distance from monument 92F (ft)
Isolines of Elevation Change (ft), July 1994 to November 1994. Contours in 0.5 foot Intervals

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
--- North Distance from monument 92F (ft)
Isolines of Elevation Change (ft), November 1994 to December 1994. Contours in 0.5 foot Intervals

250 200 0 150 100
S50
0
;o-50
-100 r-150
u)-200
-250

Figure 6

250
4-" 200 Q) 150
Q)
0 100 S50 so
0
- 50 0-100 r-150 .W-200
-250
Figure 7




November 1994 to December 1994 Figure 7 displays the elevation changes for November through December 1994 which includes the effect of Tropical Storm Gordon. This figure shows areas of alternating erosion and deposition. Substantial erosion occurred in the Clark Avenue beach area and at approximately the 1000 foot location.
A' ,- B -1- E C -0-1 D' -,250
~200 ~ l
150
soo
-50
2-50 .A/
~~1 L: ..' E
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 A -.Q B -,-] E C -*J D -,-J
North Distance from monument 92F (ft) Figure 8 Isolines of Elevation Change (ft), July 1992 to December 1994.
Contours in 0.5 foot Intervals
July 1992 to December 1994 Figure 8 represents the cumulative elevation changes from July 1992 to December 1994, a period of 29 months. Several features are noteworthy. First, in the region to the north of the Reef, variable changes have occurred with some areas losing up to 2.0 feet in elevation, also seen during individual intersuvey periods. Structures may affect this area. Secondly, the area landward of the Reef is almost entirely scoured with elevation reductions up to 5 feet in the Clark Avenue beach area. South of the Reef and landward of its alignment, there have been elevation increases of up to 2 feet and elevation decreases up to 3 feet.




August 1993 to December 1994
The net elevation changes are shown for this period in Figure 9. As noted previously, during this period, all 330 units were in place. The most significant elevation changes are: (1) decreases of up to 3 feet landward of the Reef, (2) no consistent patterns evident seaward of the Reef, (3) small changes south of the Reef, and (4) increases of up to 3 feet north of the Reef and landward of its alignment.

250
4)
" 200 Q) 150 100 S50 so
0
-50 .-100
r-150
u)-200 a-250

Figure 9

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
-4- North Distance from monument 92F (ft) Isolines of Elevation Change (ft), August 1993 to November 1994.
Contours in 0.5 foot Intervals

PROFILE CHANGES
Four profile lines (at Monuments 94D, 96F, 99B and 100B) were examined in the First Six Months Report. These profile lines are illustrated in Figure 8 as A-A', B-B', C-C' and D-D'.
Section A-A' (Figure 10) is located approximately 1,500 feet north of the Reef. The nearshore region has experienced a loss of sand, with the dry beach receding roughly 25 feet from July 1992 to December 1994.




15 10
5 0
-5
-10
-15

0 100 200 300 400 500 600
Distance from monument 94D (ft)

700 800
Seaward

Figure 10. Section A-A'. Profile 1,500 Feet North of Reef. Monument R09489D

0 100 200 300 400 500 600 700 800

Distance from monument 96F (ft)

Seaward --

Figure 11. Section B-B'. Profile 1,000 Feet South of North Reef End. Monument R09689D
14

15 10
5 0
-5
-10
-15

-20

I I I I
Section B-B' ....... July 1992
August 1993 .............. November 1994
December 1994
-2 :,:. i Reefi:
Seawall.
SI I iI I I i




-10
-15

- 2 0 I I I I I I I I I
0 100 200 300 400 500 600 700 800

Distance from monument 99B (ft)

Figure 12. Section C-C'. Profile at South End of Reef. Monument R09974B

-10
-15

Seaward

- 2 0 I I I I I I I I
0 100 200 300 400 500 600 700 800
Distance from monument 1OOB (ft) Seaward-Figure 13. Section D-D'. Profile 1,200 Feet South of Reef. Monument R10074B




Section B-B' (Figure 11) is approximately 1000 feet south of the north end of the Reef. The inner region indicates large losses of material relative to the July 1992 survey. The erosion continued until November 1994 with a maximum loss of 34.3 yds3/lf. The recent surveys show a small recovery. The December 1994 surveys show there is still 31.3 yds3/lf of cumulative erosion, with a shoreline recession of about 40.9 feet (back to the seawall). The outer region has experienced a small loss of material compared with the inner region.
Section C-C' (Figure 12) is located at the south end of the Reef. The profile shows accretion landward of the Reef for the July 1992 to August 1993 period. However, erosion occurred subsequently. Changes seaward of the Reef have been small after August 1993.
Section D-D' (Figure 13) is representative of the profile lines south of the Reef. The offshore area experienced slight fluctuations. The nearshore area has gained approximately 26.9 yds3/lf of sand from pre-construction till July 1994. From July 1994 to December 1994, this area lost about 15.7 yds3/lf of material.

10
5 0
-5
-10
-15
-20

0 150 300 450 600 750 900 1050 1200 1350 1500
Distance from monument 97C (ft) Seaward Figure 14. Section E-E'. Profile at Approximate Mid-Length of the Reef.




An additional profile line is illustrated on Figure 8 as section E-E' (Monument 97c) which is approximately at the mid-length of the Reef. Figure 14 presents the profiles at this line. The horizontal scale in this figure is compressed to show the presence of the offshore natural reef. The region landward of the PEP Reef experienced a loss of material. This figure emphasizes the relative locations and dimensions of the PEP Reef and the natural reef.
VOLUME CHANGES BY ZONES 94A Zone location
As described in the First Six Month Report, the volume changes per zone 1 zone 2 2000' lineal foot are converted into volume change (yds3) by the "average 95E .Reef end area method". A slightly modified calculation procedure has z 3
.-..e 3 zone 4 4000'
been applied that resulted in minor changes in the previous results. Appendix III contains the tables of the volume changes. The study 99B zone 5 zone 6 2000'
areas are divided into six zones as shown in Figure 15. 101A
240' +/--1-- 24o' +/--q
July 1994 to November 1994 Figure 15 Zone locations
Figure 16a shows the volume changes in the six zones for the period between July 1994 and November 1994. All six zones have experienced erosion with a total loss of 48,100 yds3 of material. The three inner zones and the three outer zones lost a subtotal of 34,900 yds3 and 13,200 yds3 respectively. Of the six zones, the smallest erosion occurred in zones one and two, whereas zones three and five experienced the greatest erosion, amounting to more than 67% of the total erosion of 48,100 yds3. A significant characteristic change from previous patterns is the erosion of 12,900 yds3 of material from zone five during these four months. However, from July 1992 to July 1994, this region had gained continuously, totaling 41,400 yds3.
November 1994 to December 1994
Figure 16b presents the volumetric changes occurring over the period encompassing Tropical Storm Gordon. Zone one shows a small gain of 200 yds3. Zone two shows a small erosion, about 2,200 yds3. Zone three and zone five continue to show substantial losses of 10,000 yds3 and 12,800 yds3 with average shoreline recessions of 3.9 and 7.0 feet (Table 2), respectively. Again Zone four experienced erosion, losing 7,700 yds3, whereas zone six experienced a relatively small gain of 1,200 yds3.




July 1994 to November 1994

-2700
-19300
-12900

-3700 Reef
-7300
-2200

- 240'+/--- 240'+/-(a)

2000'
2000' 4000' 2000'

94A 95E
0
99B 101A

July 1992 to December 1994
-17800 -4600
Reef
-88300 -16100
16300 -19700
240' +/-- 240'+/-

August 1993 to December 1994

-0
2000' 4000' 2000'

101A

- 240'+/---- 240'+/-"
(d)

Figure 16 (a,b,c,d) Volumetric Changes in Various Zones

101A

94A 95E
0
z
99B IO1A

-8000 -4000
Reef
-66600 -11300
-8100 -6700

2000' 4000' 2000'

November 1994 to December 1994




July 1992 to December 1994
Figure 16c illustrates the cumulative volume changes occurring during the total twenty-nine month period between July 1992 and December 1994. Five of the six regions have experienced negative changes. The total change for the three outer zones is -40,400 yds', and the total for the three inner zones is -89,800 yds'. The smallest negative change occurred in zone two with erosion of 4,600 yds'. The only positive change is in zone five with an accumulation of 16,300 yds 3 although substantial losses have occurred during the last six months. Most of the loss was confined to zone three, in the lee of the Reef, where the average loss of material over the 4,000 foot shoreline is approximately 22.1 yds3/lf, and the average MHW shoreline has retreated roughly 19.8 feet in this region. Overall during this twenty-nine month period, the six regions lost a total of 130,200 yds3 Of material. More than 67% of this total loss occurred in the lee of the Reef.
August 1993 to December 1994
These results, presented in Figure 16d encompass the seventeen month period during which all 330 Reef units have been in place. All six zones experienced net erosion during this period with the greatest loss (-66,600 yds3) occurring landward of the Reef. The second greatest loss (-11,300 yds3) occurred seaward of the Reef. The erosion for the remaining four zones varied between -4,000 yds3 and -8, 100 yds3.
VOLUMETRIC CHANGES OVER TIME
Figure 17 presents the variations over time of the sediment volume changes in the various zones landward of the Reef alignment. It is seen that the trends of volumetric loss immediately landward of the Reef have continued with a total loss from July 1992 to December 1994 of 88,300 yds'- A change is that the area south of the Reef which had been characterized by accretion until July 1994, has experienced erosion over the last two intersurvey periods.
Figure 18 presents the variations over time of the sediment volume changes in the various zones seaward of the Reef alignment. The overall changes are less than one-half those occurring landward of the Reef. However, all net changes are erosional.




100000 80000
60000

Landward of Reef Alignment
-0-. 2000' N and S of Reef
--- within Reef confines (zone 3)
- -- Net
2000'N (zone 1) 2000'S (zone 5)

S. ,+-2 0,

40000 F

, ...... (M o t ,
-: =." 7-. .-' "--Ti e.(Months) . ,

---- -- ------- 20 30
04/93 08/93 12/93 03/94 07/94 11/94 12/94

20000
-20000
-40000
-60000
-80000
-100000

Figure 17 Cumulative Volume Changes Landward of Reef Alignment
Following Installation

Seaward of Reef Alignment

2000' N and S of Reef within Reef confines (zon Net
2000'N (zone 2) 2000'S (zone 6)

Time (Months)

e 4) 0
2
20 30

.... -.- .11 _. -. ."" U.....
- T I I TI I IT
4/93 8/93 12/9 3/04 7/94 11/94 12//94

Cumulative Volume Changes Seaward (240 feet) of Reef Alignment Following Installation

--0-
.. .. .

70000 50000 30000

10000
-10000
-30000
-50000
-70000

Figure 18




SETTLEMENT CONSIDERATIONS

Figure 19 shows the history of average settlement of the original 57 units and the remaining 273 units with standard derivations ( error bars). The settlement history has been updated to include the surveys of November and December 1994. From July 1992 to July 1994, the average settlement for the original units and the remaining units are 2.73 and 1.60 feet respectively, (Brower et al, (1994b)). The recent surveys found the total settlement of the original 57 units is 2.71 feet relative to their estimated design depth in July 1992 and the remaining units have settled an average of 1.87 feet. From July 1994 to December 1994, the data indicate that the original units have actually risen by 0.02 feet. This is believed to be due to either incomplete removal of biological growth during surveying or small survey errors or a combination of the two. The average decrease in elevation of the remaining 273 units over the two recent Intersurvey periods is 0.27 feet. These data suggest that the original 57 units have reached a condition of equilibrium or near equilibrium settlement whereas the 273 units installed between July and August 1993 may settle a small additional amount in future storms. The individual survey elevations are plotted in Appendix 11 for all 330 units.
4
3
2
SIV
--Original 57 Units 1 u
W. Remaining Units (273) 1 (T
0 I I I
0 6 12 18 24 30
t (months after installation
Figure 19 Updated History of Average Settlement of Units Relative to Estimated Design
Depth (original 57 Units) and Field Inspection Depth (remaining 273 Units)




SCOUR ROD RESULTS

The twenty-eight scour rods were installed in July of 1993. The individual locations and other information pertaining to the design details of the scour rods are presented in the First Six Months Report. The scour rod results for five periods are illustrated in Figure 20. The fifth period is a 110 day period between June 3, 1994 and September 21, 1994. The largest changes of scour depth are found at rod 4 and rod 5 which are adjacent to the south end of the Reef, (approximately 16 inches). Secondly, at the AT&T gap, two disks (rod 18,19) scoured roughly 6 inches. To the north of the Reef, the changes in scour ranged between 0.2 and 7.5 inches. The scour at rods 10, 11 and 12 which are located at the centerline of the Reef, were found to be less than 1.0 inch. Generally, the scour changes for this period are relatively small, averaging 3.6 inches.

-5
-10
-15
-20

-30

-35
-40 Figure 20 S

00
0 0 O O] O00
0% 0
SV 0
0
.........-V .................... o I u......0 .... .... ....
V []
V
V
V
- I .... ....... ... 9 3 .... o ..+ 2 d ay s. .... .... .. .V . . .
O 07/29/93 to 08/14/93(20 days) ...V
V 08/14/93 to 12/15/93 123 days)
12/15/93 to 03/07/94(77 days)
03/07//94 to 06/03/94(88 days) 06/03/94 to 09/21/94(110 -days)
SI I I I I I I I I I I
D 5 10 15 20 25 31
Scour rod number

cour Rod Results For Five Periods




CONTINGENCY PLANS

To provide a basis for assessing the performance of the PEP Reef installation, conditions were established on various parameters prior to installation of the Reef, which if not met, could result in consideration by DEP and/or the Town of Palm Beach to modify or remove the PEP installation. These conditions, termed "performance criteria", herein are presented in Table 3 where the established and measured performance criteria are compared. It is seen that of the nine parameters established, five of the criteria are met, three are not and one is not applicable due to the lack of sediment accumulation. An additional complicating factor in the volumetric change is undoubtedly due to the sediment deficient conditions in this area.
The following parameters are within the requirements:
(1) Wave Height Reduction
(2) Alignment of Units,
(3) Increase in Longshore Current,
(4) Increase in Rip Current, and
(5) Biological Impacts.
and the following parameters are not within the performance criteria:
(1) Sediment Accumulation
(2) Shoreline Change, and
(3) Settling Units.
The "Source of Accumulation" parameter is not addressed here since there has been a net erosion in the lee of the structure.




Table 3 Comparison of Established and Measured Performance Criteria

Measured Results for Period
Parameter Criterion
Parameter Criterion July 1992-December 1994 August 1993-December 1994
Wave Height Greater Than 10% Meets This Criterion Within Meets This Criterion Within Reduction Ability to Measure Measurement Capability
Sediment Greater Than In Lee of Reef, Sand Has In Lee of Reef, sand Has Been
Accumulation 10,000 yds3 per Been Lost at a Rate of Lost at a Rate of 44,400 yds3 per
Year 36,500 yds3 per Year Year
Source of Less Than 30% This Criterion Not Relevant, This Criterion Not Relevant,
Accumulation Should be From Since There Has Been No Since There Has Been No
Alongshore Accumulation Accumulation
Sources
Shoreline Advancement Recession of 1.05 feet per Recession of 0.68 feet per Year
Change Greater Than 5 feet Year
per Year
Settling of Less Than 1 foot 2.02 feet 1.63 feet
Units
Alignment of Less Than 1 foot Nil Nil
Units
Increase in Less Than 1 foot No Significant Effect No Significant Effect
Longshore per second Documented Documented
Current
Increase in Less Than 1 foot No Significant Effect No Significant Effect
Rip Current per second Documented Documented
Biological Should not No Significant Effect No Significant Effect
Impacts Interfere with the Documented Documented
Activity of Sea
Turtle
Nesting/Hatchlings




SUMMARY AND INTERPRETATION

In general the trends identified in previous monitoring reports have continued. A difference is that the area south of the Reef and landward of its alignment has experienced erosion for the two most recent intersurvey periods.
The patterns of shoreline and volumetric: changes are consistent with the mechanism identified earlier in the Six Months Report and also found in laboratory studies. Water is transported landward over the Reef and because of the presence of the Reef over a portion of the water column does not return seaward as readily as would otherwise occur. Some of this water is "ponded" landward where it is redirected in a longshore direction acting as an additional sediment transport agent. Some of the overall erosion experienced is believed to be due to the general sediment deficient conditions in the area.
Studies conducted to quantify better the transmission coefficient due to the Reef have established a range of 85% to 95%, considerably higher than the range 65% to 85% reported earlier. Apparently some of the energy losses interpreted in earlier analyses were due to causes other than the presence of the Reef.
Of the nine performance criteria established in the contingency plan, five of the criteria are met, three are not and one is not applicable.




REFERENCES

Dean, R.G., Dombrowski, M.R., and Browder, A.E., 1994a. "Performance of the P.E.P. Reef
Installation, Town of Palm Beach, First Six Months Results." UFLICOEL-94/002, Coastal and Oceanographic Engineering Department, University of Florida, Gainesville, Florida, 34
pp. plus 5 appendices.
Browder, A.E., Dombrowski, M.R., Dean, R.G., and Chen, R., 1994b. ""Performance of the
P.E.P. Reef Installation, Twelve Months Results." UFL/COEL-94/017, Coastal and Oceanographic Engineering Department, University of Florida, Gainesville, Florida, 26
pp. plus 3 appendices.
Sea Systems Corporation, 1994c. "Monitoring and Evaluation of Submerged Offshore Breakwater
in the Town of Palm Beach, Second Annual Survey, November 1994. Pompano Beach,
Florida.
Sea Systems Corporation, 1994d. "Monitoring and Evaluation of Submerged Offshore Breakwater
in the Town of Palm Beach, Post-Storm (Gordon) Survey, December 1994. Pompano Beach,
Florida.




APPENDIX I

P.E.P. Reef Offshore & Nearshore Wave Gage Data July September, 1994
(Consistent with FCDN, units are given in meters. 1 m = 3.2808 ft)




September 1994

1.0

-++

Th4
+
-+

....... l f, r, ..... . ............. I -, , ,, , , ,, I , ..... ................ . .
13 26 39 53 66 79
date

Figure I-1 Offshore Gage Significant Wave Height, July September, 1994.

++
+

+ +
+ +
+
+m
* + +
-4 + 0+

July 1994

+
-+ -+
+R+

+ + +
+

-+ -

+++ + + I*+ 4+4 I-F + +H +
+ +
+ +
+ ++

August 1994

+++
+ + S +

September 1994

date

Figure I-2 Offshore Gage Modal Period, July September, 1994.

0.5 0.0

+,
-I-

10o

. . . . . . . . . . . . . . ... I . . . . . . . . . - 1 . . I.. . . . . .

I l l l l l i l I ~ l l l i l I . . W . . . . . . . .....l l l ~ l l l l l . . . . . . .

August 1994

July 1994

+4 f f
+ +




+ + ++ +
+j +I+
July 1994

+ + +
+ ++~
+
August 1994 September I

1994

date

Figure 1-3 Offshore Gage Modal Wave Direction, July September, 1994.

13 26 39 53 66 79 92
date

Figure 1-4 Offshore Gage Mean Current, July September, 1994.

0.5 0.4 0.3 0.2 0.1 0.0




July 1994
+ += I4+~+

September 1994

++i- + + -f ++
+ ++4 +4

S+1
+ + +H 4 4 441

4: +
+4 +
+

date

Figure I-5 Offshore Gage Mean Current Direction, July September, 1994.
1 5 . . . . . . . . . . . . . . . ., . . . . . . . . . . .

July 1994

1.0

August 1994
+

, 4& + *
+ + +
+ -# T +

September 1994

T +
++
+ + -I

S 13 26 39 53 66 79

date
Figure I-6 Nearshore Gage Significant Wave Height, July September, 1994.

+ 4

+H

0.5 0.0

IllllllIPlllll .......................

August 1994




10 + +
1+ + + + -

+ +

+ +
+4

+ +
+ : 44*
-- -1M-h-f
: + +
+
+

++ ++: + + + +-Iff H+III H I- +
+ -E + +

+ +ll+ -HH+ +4* + + -if +

4
+ +
~~4g44 V 4%Q

+i

+4 ~

August 1994

September 1994

date

Figure I-7 Nearshore Gage Modal Period, July September, 1994.
N ..................... ........................

4 + ++
+ + + -4
* July 1994

August 1994

September 1994

date

Figure I-8 Nearshore Gage Modal Wave Direction, July September, 1994.

+ ++ T
*W t + +

July 1994

+
+ +4

. I . . . . . 1 1 1 . . . . . . . . . I I l.. . . . . . . . . . . . . .




0.5 0.4 0.3 0.2 0.1 0.0

0 13 26 39 53 66 79
date
Figure I-9 Nearshore Gage Mean Current, July September, 1994.

+ +~ "!K+W+
++ +-+-4 + + 4 +

4 + ++

July 1994

* +
* ++

-M + 4T
++17 +t

t+ ~Ii++ 4-F
-F-F
+

August1994

4

+
-FI

September 1994
i , ,. . .

0 13 26 39 53 66 79
date
Figure 1-10 Nearshore Gage Mean Current Direction, July September, 1994.

+

. LL i




APPENDIX II

P.E.P. Reef
Top of Structure Elevation Data




- 2 I I I I 1 I
+++ + +++ + +
-14+H + ++ + 1+
++ ++ ++ +
-4
0
o 08 93
o 06 94 x< 11/94
' 00 0 0 0000 0 0
000
- 6 0000 ......
7 0 08Z93
06BZ94
1 1Z94 0N 12/94
- 1 11 1. I I I I I I l l I
0 10 20 30 40 50 60
unit #
Figure II-1 Top of Structure Elevations Original 57 Units.

11-2




OCF it % LE

D]J
Ell~EIIWJ

-4
-5
-6

60

70

80

unit #

Figure II-2 Top of Structure Elevations Units 50-100.

--3

. -0 r
LI LI0 [ZtjL LI L
LI L

00 o 0
ova

0 0.
-]
o.. O

]-

0000
0 0 oo
0 O 0 O CDOI
Voo vv00000Ow
as -uit 8/93 .C

V 12 93
o 3/94 + 6/94 x 11/94 I .. .1 9 /iQAzt

110

120
unit #

130

140

150

Figure II-3 Top of Structure Elevations Units 100-150.

1-3

-3

0
e [0 as-built
o 81/93
0 3/94 + 6/94
, 11/94

-7
-8
50

SIN

90

100

E] C
F1 I

-4

-6

-7

-8
10

0

I I I I

, 1 2/,94 .

-- W ,,

-- -ID- N

I ,




160

170

I

unit #

80

Figure II-4 Top of Structure Elevations Units 150-200.

-3

-4
-5
-6

-7

-8 1 200

210 220 230 240
unit #

Figure II-5 Top of Structure Elevations Units 200-250.

11-4

-3

-4
-5
-6

-7
--8
1 5

I I I I I I I I I a I s I I I I I I
O
-
ErJEPW EUE
nT-1 Ej= 0Z~ [
- 00 0C0000 00000 O O0
0 0000 0 V7 00000 0
A .. 0 .- 0 0 V .- ,V .. .. .. .. .A C A -O -- .0 0
7 vVV7 V7V V 000 00
VV 7 17 V V1
V V
v17 V
V '7VY W.. v
0 as-built an 000 0 0
a 81/93 .v .12 -93
0 3/94 + 6/94
x 11/94
--N 12/94

190

200

250

I i I i I I I I I I I i i

0




-3

-4

-6

-- '7 . . . @ . @ . . . . . . . . . . . .. . . .
-- I r I n I
250 260 270 280 290
unit #
Figure II-6 Top of Structure Elevations Units 250-300.

-3

-4
-5
-6

-7

-8300
300

310 320 330 340
unit #

Figure II-7 Top of Structure Elevations Units 300-330.

300

350




APPENDIX III

a). Tabulation of Volumetric Changes On Survey Profiles b). Tabulation of Volume Changes Between Survey Profiles c). Tabulation of Elevation Changes between Survey Profiles

M-1




Table Ill-la

P.E.P. Reef Monitoring Volumetric changes ON survey line dated July 1994 and November 1994 Profile Dist. to Length ol Volume Change (cu. yards/linear foot) Inner IOuter
Line Reef (ft) ICells (ft) -Cell 1 Cell 21 Cell 31 Cell41 Cell 51 Cell 61 Cell 71 Cell 81 Subtotal ISubtotal Total

92F
93B 93C 93D 93E
94A 948 940 94D 94F 94G 94H 94J 95A 95B 950 950 95E 95E1 95F 95F1 96A 96A1 96B 961 960 9601
960 96E 96F 96G 979 97A 97B 970 97D 97E 97F 98A 98B 98C 98E 98G 98H 981 98J 99A 99A1
998 9981 990 9901
99D 99E 99F 1 OQA
1008 1 000 1000D 100OE
1OOF 101 A
1018 1010

60 60 60 60
60 60
60 60 60 60
60 60 60 60 60
60 60 20 80
00 70
20 70
00 75
60 60 60
80 70
40 35
60 42
08 50
40 60
00 57
12 54
28 60
24 58
12 53
12 53
08 52
84 47
84 47
00 52
12 52
16 55
28 54
28 57
40 60
60 65
76 68
88 71
'00 75 ;06 77
60 60 60 60 60 60
60 60
60 60 60
60 60 60 60

0.69
0.22 0.31
0.22 0.00 0.68
-0.63
2.09
2.74
-1.95
-0.08
-0.02
-0.07
-4.66
-1.19
0.96 0.92
1.34 2.08 1.96
2.12 0.88
-0.03
0.85
4.86
-1.17
-1.63
-2.20
-1.55
-4.12
-2.70
-0.11
0.41 2.63 1.99
1.34
-0.05
0.28
-0.66
1.18
-1.71
-2.72
-2.33
-3.72
-4.06
-4.71
-3.54
-4.30
-2.58
-2.60
-1.16
-1.47
-0.24
0.10
-0.02
-0.74
0.30
-0.11
0.26
0.20 0.77
-0.95
-0.41
-0.42

-0.82 -0.04 4.04 4.67 1.82 10.89 7.65 13.43 0.93 -4.28 3.73 4.80
-3.04 -1.64
-1.98 0.17 0.35 -0.63
-1.18 1.10
-2.53 -0.95
-0.91 -4.67 0.07 3.73
-2.19 0.15
-0.07 0.50 0.62 0.37 1.17 -1.27
-6.21 -6.22
-5.58 -4.30
-4.47 -2.76
-1.61 -4.04 1.97 -2.52 3.87 -0.51 7.97 0.29 6.39 1.17
-1.47 -0.91
-2.44 -1.48
-2.47 -0.44
-0.58 -0.41
-4.33 -2.53
-3.38 -1.64
-4.75 -3.29
-4.13 -2.87
-0.51 -2.04
-0.57 -0.56
-1.58 0.22
-2.36 -1.66
-1.81 -1.67
-2.11 -0.41
-0.77 -0.79
-2.66 -0.99
-4.46 -2.92
-3.18 -3.01
-2.96 -2.61
-1.86 -1.77
-1.28 -1.83 0.02 -0.18
-2.68 -2.81 0.68 1.94
-4.18 0.75
-5.15 -1.30
-6.28 -6.46
-4.92 -5.55
-4.48 -1.12
-5.22 -3.04
-4.71 -2.14
-3.96 -3.14
-1.88 -2.99
-0.99 1.20
-0.39 0.34 1.30 2.26
-2.34 -1.02 1.76 1.54
-0.12 -1.29

Total -28.23 -83.21 -49.18 -38.33 -27.68 -16.67 -22.81 -34.19 -199.03 -101.32 -300.36
Vertical double lines indicate location of reef structure at time of monitoring survey.

111-1

-0.66 -0.82 0.29 0.41 0.95 0.97 4.16 3.64 0.13 3.19 -0.81 0.03
-3.47 -3.24 -2.25 2.97 0.97 -0.41
-1.02 0.07 0.61
-1.92 -1.61 -0.25
-1.09 -0.02 -0.57 1.94 -0.07 -2.94
-1.38 -0.98 -0.83
-3.88 -3.59 -1.98 0.60 0.20 0.82 0.76 0.82 0.78 0.52 -0.30 -0.07 0.77 -1.64 -1.29 2.151 0.99 0.72
-3.27 023 -1.06
-1.501 0.11 -0.70
-1.071 -0.64 -0.31 0.451 -0.44 -0.20
-2.69 -1.45 -0.37
-1.20 -0.15 -0.32
-0.05 0.16 -0.59 0.57 -0.09 -0.36
-0.87 -0.50 -0.11 0.00 -0.28 -0.49 0.76 0.45 0.66 2.17 -0.29 -1.44
-0.45 0.40 0.66 0.17 0.64 1.48
-1.13 -0.22 0.52
-0.45 -0.41 -1.46
-0.70 0.09 -1.49
-0.59 -1.09 -1.79 1.81 1.73 -0.03 0.06 -0.27 0.41
-0.50 -1.04 -0.46 0.74 0.96 0.67 1.16 2.12 0.39
-0.04 1.44 0.62
-0.93 -0.70 -0.87
-1.59 -0.85 -0.70
-0.55 -0.65 -0.64
-1.95 -0.12 0.00
-2.23 -0.40 0.93
-2.20 0.13 -1.44
-1.53 -2.22 -1.77
-0.38, -1.89 -0.08 0.78 1.19 0.63
-0.30 -0.55 -0.46
-7.22 -3.35 -0.68
-3.71 -1.60 -1.31 0.79 -1.19 2.16
-3.57 -1.51 0.92
-1.07 -0.98 0.87
-3.40 -2.49 -0.72
-2.42 -1.60 -0.02 0.56 -0.81 -0.59
-3.08 -2.86 -1.78
-0.12 1.02 0.22
-2.74 -1.07 1.46 2.70 -0.43 -2.03
-1.60 -0.77 1.24

2.16 0.17
-1.12 -3.52
-3.42 -1.19
-0.31 -0.86 1.02 1.76
-3.31 -1.37 2.26 -0.13
-0.38 -0.15 0.90 1.55
-2.06 -1.37
-0.79 0.28
-0.07 -0.26
-0.13 -1.50 0.57 -2.10 1.12 1.31
-1.26 -1.16
-2.94 -3.62
-0.23 0.21
-0.41 -0.28
-1.10 -0.40
-0.99 -0.12 0.18 -0.16
-1.53 -0.85
-0.44 -0.58
-0.69 -0.59 0.00 -0.19
-0.47 -1.29 0.26 -0.15
-2.37 -0.71 0.82 1.04
-1.34 -0.62
-0.64 -0.79
-1.64 -3.27
-0.19 -0.74
-0.99 -0.38
-0.52 -0.82
-0.64 -0.10
-0.72 -0.46 0.42 -1.57
-0.99 -0.50 0.45 -0.17
-2.99 -4.52 0.59 0.75
-0.91 -0.67 0.67 -1.02 0.73 -2.06
-0.37 -0.57
-0.86 -1.66
-0.54 -0.32
-1.17 -0.86
-1.07 0.28 0.30 0.85
-0.03 0.00
-0.49 0.53
-0.75 -0.68 0.64 0.09
-0.77 -0.03
-0.38 -0.67
-0.80 -0.48 2.71 0.11 2.15 -0.01 0.83 1.42
-0.18 0.25 1.41 0.73

-0.83 1.80 9.34 -2.72 17.18 -0.85
24.48 -1.94
-6.82 -2.70 12.18 -4.12
-6.32 2.82
-1.64 -2.40 1.37 1.86
-0.09 -6.44
-4.93 -2.32
-9.48 -5.90 4.33 -0.61
-5.94 0.08
-0.24 2.06 2.72 -5.34 2.97 -4.86
-14.37 -0.85
-9.31 -1.27
-6.34 -2.46
-3.09 -1.75
-2.37 -1.81
2.14 -2.84 9.07 -1.45 12.99 -1.74
-4.42 -0.79
-5.56 -2.53
-4.35 1.22
-0.37 -4.81 11.43 2.93
-7.54 0.16
-9.28 -1.14
-7.04 -6.78
-0.62 -2.32 0.26 -4.25 1.78 0.37
-4.02 -0.59
-3.71 -2.68
-2.44 0.48 0.77 1.01
-5.40 2.34
-11.03 -9.09
-10.11 -0.211
-9.83 -2.88
-9.64 -0.46
-10.05 -0.80
-5.91 -2.24
-11.32 -6.50
-0.34 -2.83
-5.25 -0.22
-7.91 -1.81
-21.43 -2.88
-14.42 -2.94
-4.71 1.01
-11.85 -2.02
-8.66 0.62
-10.20 -4.02
-7.41 -2.66 1.03 -2.68
-2.93 -1.82 4.21 3.38
-7.06 2.64 5.59 -2.39
-3.43 2.61

0.97 6.61 16.33
22.54
-9.52
8.06
-3.51
-4.04
3.22
-6.53
-7.26
-15.38 3.72
-5.87
1.82
-2.62
-1.89
-15.22
-10.58
-8.80
-4.83
-4.17
-0.70
7.62 11.25
-5.21
-8.09
-3.13
-5.19
-8.50
-7.38
-10.42
-13.82
-2.94
-3.99
2.15
-4.61
-6.39
-1.96
1.79
-3.06
-20.12
-10.32
-12.71
-10.10
-10.85
-8.15
-17.82
-3.16
-5.47
-9.72
-24.30
-17.36
-3.70
-13.87
-8.04
-14.22
-10.06
-1.65
-4.75
7.59
-4.42
3.19
-0.82




Table III-lb

P.E.P. Reef Monitoring Volume changes BETWEEN survey lines dated July 1994 and November 1994
Profile Dist. b/ Dist. to Area of cel Volume Change (cubic yards) Inner I Outer Inner Cun] Outer Cu
Lines lines(ft) Reef (ft) (sq.yards) Cell1 Cell 2 Cell 3 Cell 4 Cell 5 Cell 6 Cell 7 Cell 8 Chg(cyds Chg(cyds Chg(cyds) Chgs(yads

92F-93B 400 93B-93C 200 93C-93D 200 93D-93E 200 93E-94A 200 94A-94B 200 94B-94C 200 94C-94D 200 94D-94F 300 94F-94G 150 94G-94H 150 94H-94J 200 94J-95A 200 95A-95B 100 95B-95C 100 95C-95D 100 95D-95E 100 95E-95E1 75 95E1-95F 75 95F-95F1 75 95F1-96A 75 96A-96A1 75 96A1-96B 75 96B-96B1 75 96B1-96C 75 96C-96C1 100 96C1-96D 100 96D-96E 200 96E-96F 200 96F-96G 200 96G-979 228 979-97A 200 97A-97B 200 97B-97C 200 97C-97D 200 97D-97E 200 97E-97F 150 97F-98A 150 98A-98B 150 98B-98C 150 98C-98E 200 98E-98G 200 98G-98H 100 98H-981 100 981-98J 100 98J-98A 100 99A-99A1 75 99A1-99B 75 99B-99B1 75 99B1-99C 75 99C-99C1 75 99C1-99D 75 99D-99E 150 99E-99F 200 99F-100A 200 100A-100B 200 100B-100C 200 100C-100D 200 100D-100E 200 100E-100F 200 100F-101A 200 101A-101B 200 101B-101C 200

2667 1333 1333 1333
1333 1333 1333 1333
2000 1000 1000 1333 1333
667 667 667
778 120 646 100 646 120 646 100 562
500 500 542 !80 438 40 417
60 511
!08 1244
!40 1222 !00 1144 112 1222 !28 1256 224 1211 12 1178
212 1167 '08 1089 84 767
84 800
!00 858 !12 892 !16 1233 228 1267 !28 650 !40 694 !60 744 !76 783 !88 612 100 631 106 569
500 500 500 1000 1333 1333 1333 1333 1333 1333 1333 1333 1333 1333

181 645 925 -51 53 586 1555 457 53 947 2431 736 22 858 914 -28 68 466 51 -50
5 69 316 195
146 -502 -147 -294 483 -163 -46 -301 118 -126 71 128
-152 -278 11 42
-7 -258 -422 -394 -9 -84 -94 -328
-473 -212 389 135
-292 -113 33 64
-11 27 44 64
94 90 -45 146
113 -252 -375 -56 128 -442 -395 -179 151 -377 -265 -96 153 -228 -255 -23
112 13 -246 -84
32 219 -114 -146 31 444 -8 -47
214 539 55 20
139 185 10 -11
-140 -196 -120 -44
-192 -246 -96 38
-376 -305 -85 293
-567 -491 -294 172
-683 -771 -417 -27
-281 -812 -493 -96 30 -888 -616 -158 304 -464 -491 -114 462 -108 -261 -129 333 -215 -35 121
129 -394 -145 186 17 -313 -250 -33
-29 -294 -156 18
39 -216 -90 142
-40 -257 -134 84
-443 -711 -392 -97
-506 -764 -593 -251
-303 -307 -281 -107
-389 -241 -219 -125
-439 -157 -180 -209
-413 -63 -101 -221
-294 -100 -112 -140
-258 -75 -33 -71
-194 -131 101 15
-141 -350 -21 18
-99 -428 -291 -282
-64 -420 -450 -410
-10 -704 -500 -219 8 -970 -416 -278
-77 -993 -518 -464
-44 -867 -529 -447 19 -584 -614 -581 15 -287 -179 -186 46 -138 154 -252 97 91 260 -320
-18 -104 124 -286
-136 -58 51 -5
-84 164 25 110

250 209 -670 109 -454 -472 16 -372 -205
-221 72 90
-266 -229 39 20 -105 -150 36 188 -28
-83 51 140
-527 -174 28
-283 -214 -81
-211 -64 2
-117 -20 -175 160 44 -360
36 85 -40
-68 -7 7
-29 -210 -239
-17 -158 -171
-66 -24 -3
-38 -57 -25
-19 -79 -19
-22 -30 -10
-26 -51 -38
-34 -74 -53
-36 -43 -44
-18 -26 -29
-30 -23 -74 9 -10 -72
-78 -211 -86
-77 -155 33 215 -52 42
200 -198 -141
-95 -228 -406
-295 -183 -400
-328 -118 -112
-182 -151 -120 38 -116 -91
-4 -101 -42 16 -22 -153 80 -43 -156 76 -41 -50
-25 -254 -469
-157 -241 -377
-67 -16 4
-32 -12 -84 47 70 -154
-25 18 -132
-120 -46 -84
-69 -52 -74 21 -64 -44 6 -84 -22
-43 -29 42
-74 10 32
64 -39 39
308 -124 -15 179 -11 -59 15 -13 6
-74 -115 -69
-61 -118 -114
-237 191 -36
-155 486 11
168 298 141
-58 64 167
-79 123 98

1700 -184 2651 -357 4166 -279 1766 -464 536 -682 586 -131
-796 42
-28 -54 191 -688
-377 -657
-1081 -617
-515 -651
-161 -53
-309 107 124 -164 284 -510
-570 -285
-888 -80
-587 -140
-354 -158
-205 -133
-9 -174 420 -161 827 -119 321 -95
-499 -166
-496 -65
-472 -359
-1180 -188
-1897 309
-1682 -98
-1632 -792
-765 -910
-35 -657 204 -389
-224 -23
-580 -246
-461 -165
-125 112
-347 252
-1643 -675
-2114 -930
-997 -155
-974 -167
-985 -63
-798 -152
-646 -328
-437 -350
-210 -114
-493 -76
-1100 -176
-1344 -218
-1434 -145
-1656 -101
-2051 -139
-1886 -339
-1761 -667
-637 -534
-189 -450 128 157
-285 602
-147 24
216 22

1700 -184 4352 -541
8518 -820 10284 -1284 10820 -1966 11405 -2097 10609 -2055 10581 -2109 10772 -2797 10396 -3454 9314 -4070 8799 -4721 8638 -4775 8329 -4668 8453 -4832 8737 -5342 8167 -5627 7279 -5707 6692 -5847 6339 -6005 6134 -6138 6126 -6312 6546 -6473 7373 -6592 7694 -6687 7195 -6852 6699 -6918 6227 -7276 5047 -7465 3149 -7156 1467 -7254
-165 -8046 -930 -8957 -966 -9614 -762 -10003 -985 -10025
-1565 -10271
-2026 -10437
-2152 -10325
-2499 -10073
-4142 -10748
-6256 -11678
-7253 -11832
-8227 -11999
-9212 -12062
-10010 -12214
-10655 -12542
-11092 -12892
-11302 -13006
-11796 -13082
-12896 -13258
-14240 -13476
-15674 -13620
-17330 -13722
-19382 -13861
-21268 -14200
-23029 -14868
-23666 -15402
-23855 -15852
-23727 -15695
-24012 -15093
-24159 -15069
-23943 -15047

Total 63914 -3369 -12114 -4004 -4456 -3794 -2377 -3352 -5527 -23942 -15046
Vertical double lines indicate location of reef structure at time of monitoring survey.




Table IIl-ic

P.E.P. Reef Monitoring Elevation changes BETWEEN survey lines dated July 1994 and November 1994 Profile Dist. b/ Dist. to Area of cell Elevation Change (feet) Inner Outer Total
Line lines(ft) Reef (ft) (sq.yards) CellI Cell2 Cell3j Cell 4 Cell51 Cell 6 Cell 7 Cell 81 Chg(ft) Chg(ft) Chg(ft)

92F-931 93B-93C 93C-93D 93D-93E 93E-94A 94A-94B 94B-94C 94C-94D 94D-94F 94F-94G 94G-94H 94H-94J 94J-95A 95A-95B 95B-95C 95C-95D 95D-95E 95E-95E1 95E1-95F 95F-95F1 95F1-96A 96A-96A1 96A1-968 968-9681 96B1-96C 96C-96C1 96C1-96D 96D-96E 96E-96F 96F-96G 96G-979 979-97A 97A-97B 97B-97C 97C-97D 97D-97E 97E-97F 97F-98A 98A-98B 98B-98C 98C-98E 98E-98G 98G-98H 98H-981 981-98J 98J-98A 99A-99A1 99A1-998 99B-99B1 99B1-99C 99C-99C1 99C1-99D 99D-99E 99E-99F 99F-100A 10OA- 00B
100B-100C 10OC-100D
100D-100E 100E-100F 10OF-101A
101A-1 01B 101B-101C

63914 -13.12 -38.22 -21.70 -15.72 -11.64

-7.64 -11.24 -15.93 -88.73 -46.36 -135.15

Vertical double lines indicate location of reef structure at time of monitoring survey.

2667 1333 1333 1333 1333 1333 1333 1333 2000 1000 1000 1333 1333 667 667 667 778
320 646
300 646
320 646
300 562
500
500
542
280 438
140 417 160 511 208 1244 240 1222 200 1144 212 1222 228 1256 224 1211 212 1178 212 1167 208 1089 184 767 184 800 200 858
212 892
216 1233 228 1267 228 650
240 694
260 744
276 783
288 612
300 631
306 569
500 50O 5O0
1000 1333 1333 1333 1333 1333 1333 1333 1333 1333 1333

0.20 0.12 0.12 0.05 0.15 0.01 0.33 1.09 0.18
-0.46
-0.02
-0.02
-1.07
-1.32
-0.05
0.42 0.43 0.59 0.70 0.71 0.60 0.19 0.19 1.19 0.95
-1.01
-1.13
-0.91
-1.39
-1.79
-0.69
0.07 0.75 1.18 0.86 0.35 0.06
-0.11
0.14
-0.13
-1.08
-1.20
-1.40
-1.68
-1.77
-1.58
-1.44
-1.23
-1.02
-0.85
-0.59
-0.38
-0.03
0.02
-0.17
-0.10
0.04 0.03 0.10 0.22
-0.04
-0.31
-0.19

0.73 1.32 2.13 1.93 1.05 0.16
-1.13
-0.37
-0.19
-0.84
-0.77
-0.19
-0.48
-0.51
0.12 0.40
-0.97
-2.05
-1.75
-1.06
0.07 1.32 2.67 2.98 1.27
-1.41
-1.44
-0.74
-1.21
-2.02
-1.99
-2.12
-1.15
-0.27
-0.55
-1.09
-1.22
-1.10
-0.76
-0.86
-1.73
-1.81
-1.42
-1.04
-0.63
-0.24
-0.49
-0.36
-0.69
-2.10
-2.57
-2.52
-2.11
-2.18
-2.23
-1.95
-1.31
-0.65
-0.31
0.20
-0.23
-0.13
0.37

1.04 -0.06 0.03 3.50 1.03 1.03 5.47 1.65 0.64 2.06 -0.06 -0.91 0.12 -0.11 -0.51 0.71 0.44 0.24
-0.33 -0.66 -0.35
-0.10 -0.68 -0.37 0.11 0.19 -0.02 0.03 0.13 -0.24
-1.27 -1.18 -1.03
-0.21 -0.74 -0.76 0.87 0.30 0.23 0.15 0.29 0.12 0.20 0.29 -0.44
-0.20 0.66 -0.15
-1.45 -0.22 0.23
-1.83 -0.83 0.06
-1.23 -0.45 -0.09
-1.19 -0.11 -0.19
-1.31 -0.45 -0.38
-0.68 -0.88 -0.36
-0.05 -0.28 0.00 0.30 0.11 0.01 0.07 -0.08 -0.15
-0.86 -0.31 -0.28
-0.57 0.22 0.05
-0.21 0.71 0.04
-0.72 0.42 0.03
-1.09 -0.07 0.27
-1.21 -0.24 0.10
-1.47 -0.38 -0.15
-1.22 -0.28 -0.08
-0.66 -0.33 -0.25
-0.09 0.31 0.17
-0.40 0.51 0.40
-0.98 -0.13 -0.39
-0.58 0.07 -0.02
-0.32 0.50 0.81
-0.45 0.28 0.90
-0.95 -0.24 0.18
-1.41 -0.60 -0.37
-1.30 -0.49 -0.35
-0.95 -0.54 -0.17
-0.73 -0.84 -0.10
-0.38 -0.85 -0.05
-0.55 -0.68 -0.38
-0.16 -0.34 -0.73 0.53 0.08 -0.14
-0.12 0.11 0.14
-1.75 -1.69 -0.88
-2.70 -2.46 -1.12
-1.50 -0.66 -0.63
-0.94 -0.63 -0.61
-1.17 -1.04 -0.56
-1.19 -1.01 -0.78
-1.38 -1.31 -0.92
-0.40 -0.42 -0.54 0.35 -0.57 -0.83 0.59 -0.72 -0.42 0.28 -0.64 -0.01 0.12 -0.01 -0.34 0.06 0.25 -0.27

0.28 0.25 0.04
-0.50
-0.60
0.05 0.08
-0.19
-0.79
-0.85
-0.63
-0.26
0.36 0.16
-0.31
-0.13
-0.07
-0.31
-0.18
-0.09
-0.12
-0.16
-0.20
-0.20
-0.12
-0.21
0.05
-0.19
-0.19
0.56 0.49
-0.23
-0.73
-0.84
-0.47
0.10
-0.01
0.06 0.28 0.26
-0.06
-0.37
-0.31
-0.14
0.19
-0.10
-0.59
-0.33
0.11 0.04
-0.26
-0.45
0.19 0.69 0.40 0.03
-0.17
-0.14
-0.53
-0.35
0.38
-0.13
-0.18

0.23
-1.02
-0.84
0.16
-0.51
-0.24
0.42 0.12
-0.26
-0.64
-0.19
-0.05
0.10 0.38
-0.03
-0.94
-0.61
-0.11
-0.26
-0.36
-0.16
-0.30
-0.44
-0.24
-0.18
-0.17
-0.06
-0.51
-0.38
-0.14
-0.49
-0.54
-0.45
-0.30
-0.39
-0.32
-0.40
-0.08
-0.15
-0.14
-0.62
-0.57
-0.08
-0.05
0.28 0.07
-0.22
-0.25
-0.34
-0.50
-0.17
0.06
-0.12
-0.28
-0.02
-0.03
-0.26
-0.27
0.43 1.09 0.67 0.15 0.28

1.91 -0.21
5.97 -0.80 9.37 -0.63 3.97 -1.04 1.21 -1.54 1.32 -0.29
-1.79 0.09
-0.06 -0.12 0.29 -1.03
-1.13 -1.97
-3.24 -1.85
-1.16 -1.46
-0.36 -0.12
-1.39 0.48 0.56 -0.74 1.28 -2.29
-2.20 -1.10
-4.12 -0.37
-2.73 -0.65
-1.64 -0.73
-1.09 -0.71
-0.05 -1.04 2.52 -0.96 4.58 -0.66 2.20 -0.65
-3.59 -1.19
-2.91 -0.38
-1.14 -0.87
-2.90 -0.46
-4.97 0.81
-4.13 -0.24
-3.90 -1.89
-1.90 -2.25
-0.09 -1.67 0.53 -1.00
-0.62 -0.06
-2.27 -0.96
-1.73 -0.62
-0.44 0.39
-1.17 0.85
-4.00 -1.64
-5.01 -2.20
-4.60 -0.71
-4.21 -0.72
-3.97 -0.25
-3.06 -0.58
-3.16 -1.61
-2.08 -1.66
-1.11 -0.60
-2.96 -0.46
-6.60 -1.05
-8.06 -1.31
-4.30 -0.43
-3.73 -0.23
-4.62 -0.31
-4.24 -0.76
-3.96 -1.50
-1.43 -1.20
-0.43 -1.01 0.29 0.35
-0.64 1.35
-0.33 0.05 0.49 0.05

1.71 5.16 8.75 2.93
-0.33
1.02
-1.70
-0.18
-0.74
-3.10
-5.09
-2.62
-0.48
-0.91
-0.18
-1.01
-3.30
-4.49
-3.38
-2.38
-1.80
-1.10
1.56 3.92 1.55
-4.79
-3.29
-2.00
-3.36
-4.16
-4.37
-5.79
-4.15
-1.76
-0.47
-0.68
-3.23
-2.35
-0.05
-0.32
-5.64
-7.21
-5.32
-4.93
-4.22
-3.64
-4.77
-3.74
-1.71
-3.42
-7.65
-9.37
-4.74
-3.95
-4.93
-5.01
-5.46
-2.64
-1.44
0.64
0.71
-0.28
0.53




Table 111-2a

P.E.P. Reef Monitoring Volumetric changes ON survey line dated November 1994 and December 1994
Profile Dist. to Length of Volume Change (cu. yards/linear foot) Iinner Outer
Line IReef (ft) Cells (ft) FCell 17Cell 21 Cell 31 Cell 41 Cell 51 Cell 61 Cell 71 Cell 81 Subtotal Subtotal Total
92F 60 -7.42 1.83 2.64 2.94 -0.48 -3.68 -3.27 -2.24 -0.01 -9.66 -9.67
93B 60 -2.10 -6.74 1.23 2.55 2.66 1.00 0.76 3.22 -5.06 7.64 2.58
930C 60 0.05 -4.62 -2.11 1.38 3.58 5.86 7.34 3.50 -5.30 20.28 14.98
93D 60 -0.09 -3.59 -2.16 0.72 1.72 2.98 2.67 0.69 -5.11 8.06 2.95
93E 60 -0.35 -2.18 -0.30 3.33 3.56 0.92 -1.61 -2.11 0.51 0.75 1.26
94A 60 -1.62 -4.95 -1.61 -1.03 -0.51 2.70 4.03 0.78 -9.21 6.99 -2.22
94B 60 0.00 2.23 2.77 1.59 0.14 -1.29 -2.93 -0.38 6.60 -4.46 2.14
940 60 -0.72 2.76 1.57 -0.60 -4.01 -3.43 -2.51 -2.56 3.02 -12.51 -9.49
94D 60 -1.77 0.35 0.95 0.90 -1.76 -1.50 -0.19 0.90 0.43 -2.55 -2.12
94F 60 -1.29 -0.46 -0.82 -0.84 2.85 3.00 1.36 -0.44 -3.40 6.77 3.37
94G 60 -2.03 -0.87 0.96 0.68 -1.73 -2.67 -1.58 -1.20 -1.26 -7.19 -8.45
94H 60 -0.18 -1.27 0.65 3.24 3.28 0.69 -0.11 -0.22 2.44 3.63 6.07
94J 60 0.00 -3.50 -2.98 -0.46 -1.20 -1.31 -0.10 1.20 -6.94 -1.40 -8.34
95A 60 2.81 1.45 -0.25 0.79 0.36 1.16 -0.43 -1.56 4.80 -0.47 4.33
95B 60 2.23 0.88 -0.20 0.39 1.43 1.23 1.75 1.21 3.30 5.62 8.92
950 60 -0.26 -0.49 -0.14 -0.94 -0.77 -0.63 -1.20 0.58 -1.83 -2.02 -3.85
95D 60 0.61 -0.01 0.60 -0.71 1.54 2.62 3.18 -0.60 0.49 6.73 7.22
95E 320 80 -4.78 2.37 2.94 0.57 -2.63 -3.17 -4.36 -2.93 1.10 -13.09 -11.99
95E1 300 70 -4.62 0.64 0.99 -0.21 -1.14 -0.34 -0.35 -0.29 -3.19 -2.12 -5.31
95F 320 70 -5.54 0.22 -0.72 -1.58 0.22 -0.08 -0.33 0.71 -7.62 0.53 -7.09
95F1 300 75 -1.53 -1.78 -0.93 -2.43 -1.03 0.59 2.52 1.31 -6.67 3.39 -3.28
96A 60 -1.26 -4.03 0.07 -0.85 -0.40 -0.35 0.24 0.97 -6.08 0.46 -5.61
96A1 60 -0.61 -5.34 -1.65 -1.52 -0.68 0.02 0.02 -0.61 -9.12 -1.25 -10.37
96B 60 -2.84 -7.42 -2.23 -2.11 -1.79 0.12 -2.23 -1.74 -14.61 -5.64 -20.25
96131 280 70 -5.68 -6.45 -3.60 -2.88 -2.43 -1.94 -0.48 -0.60 -18.60 -5.45 -24.04
960 140 35 -1.26 -0.46 -0.13 0.33 0.35 0.19 -0.37 0.28 -1.52 0.45 -1.07
9601 160 42 0.09 0.66 0.21 -0.48 0.21 0.07 -0.78 -1.05 0.48 -1.55 -1.07
96D 208 50 -0.20 0.28 -0.67 -1.14 -2.09 -1.91 -1.27 0.32 -1.74 -4.95 -6.69
96E 240 60 1.16 0.28 -0.28 0.18 -2.27 -0.47 -0.14 -1.85 1.34 -4.72 -3.38
96F 200 57 1.10 1.37 0.34 -1.21 -0.47 -0.75 -0.79 0.53 1.60 -1.48 0.11
96G 212 54 0.58 -0.63 -2.02 -1.42 -1.18 -2.09 -0.39 -1.65 -3.49 -5.31 -8.80
979 228 60 -0.93 1.86 1.33 0.10 -1.63 -1.75 0.57 1.97 2.36 -0.84 1.51
97A 224 58 -0.33 1.49 2.34 1.01 -0.38 -1.42 -0.51 -0.08 4.51 -2.39 2.12
97B 212 53 -1.03 -1.40 -0.45 -0.35 -0.22 -0.41 -2.91 -2.33 -3.23 -5.89 -9.12
970 212 53 -1.79 -0.83 -0.51 0.90 -0.33 0.50 0.33 -0.30 -2.24 0.20 -2.04
970 208 52 -1.99 -0.31 -0.79 -0.61 -2.37 -1.38 -0.04 -0.50 -3.69 -4.29 -7.98
97E 184 47 -1.14 0.31 0.30 -1.26 0.00 -0.50 0.25 0.85 -1.79 0.60 -1.19
97F 184 47 -1.07 0.37 1.90 0.41 0.57 0.43 0.06 -0.37 1.61 0.69 2.30
98A 200 52 -1.29 0.97 0.68 -0.23 -0.57 -0.94 -1.37 1.04 0.13 -1.83 -1.70
986 212 52 -0.39 0.41 0.75 -0.43 -2.70 -0.53 0.40 0.09 0.34 -2.74 -2.40
980 216 55 -0.49 2.44 1.30 -0.20 -1.77 -1.50 -1.23 0.65 3.04 -3.85 -0.80
98E 228 54 -2.14 1.18 -1.91 -2.17 0.26 1.32 -0.20 2.21 -5.05 3.60 -1.45
98G 228 57 0.54 0.58 1.08 -0.38 -0.80 0.82 -1.04 -0.33 1.82 -1.35 0.47
9~8H 240 60 -0.90 -0.13 0.41 -1.88 -1.73 -0.60 -0.46 -0.63 -2.51 -3.42 -5.93
981 260 65 -3.84 -1.29 -1.32 -0.23 -0.65 -2.50 -0.37 0.81 -6.69 -2.70 -9.39
98J 276 68 -5.56 -2.30 -0.76 0.79 -0.28 0.91 1.38 0.11 -7.83 2.12 -5.72
99A 288 71 -6.44 -2.52 -1.70 -0.88 -1.73 2.32 2.15 -1.53 -11.53 1.22 -10.31
99A1 300 75 -6.44 -2.50 -1.78 -1.38 -0.81 1.16 2.44 2.34 -12.11 5.13 -6.98
99B 306 77 -4.74 -1.87 -2.18 0.29, -0.39 0.35 -1.62 0.13 -8.50 -1.54 -10.04
99131 60 -0.57 -0.46 -0.98 -0.74 -2.18 -2.02 1.25 -0.01 -2.76 -2.96 -5.72
990 60 -2.09 1.36 -0.50 0.29 -3.75 1.26 1.55 -0.23 -0.94 -1.17 -2.11
9901 60 -1.99 -0.08 2.06 2.28 -0.14 0.05 0.31 -0.72 2.25 -0.50 1.76
990D 60 -3.66 -2.13 0.55 -0.48 -2.11 0.83 1.04 0.01 -5.72 -0.22 -5.94
99E 60 -3.08 -0.26 -0.35 0.25 1.80 1.19 1.47 -0.65 -3.44 3.81 0.37
99F 60 -2.53 -1.12 -1.59 -0.83 -1.15 -1.12 0.21 -0.35 -6.07 -2.42 -8.49
1lOQA 60 -4.60 -3.03 -1.38 -1.22 1.17 2.28 1.29 0.13 -10.23 4.87 -5.36
1006 60 -2.59 -2.61 -0.64 0.35 -0.62 -0.43 -1.12 -0.93 -5.50 -3.10 -8.60
1 000 60 -2.09 -3.04 -1.59 0.48 1.35 1.20 1.12 0.13 -6.24 3i.80 -2.45
1000D 60 -2.85 -2.64 -1.18 -0.09 -0.21 0.98 -0.47 -1.74 -6.76 -1.44 -8.20
100E 60 -4.06 -4.54 -1.60 -0.72 -0.77 1.64 -0.44 0.65 -10.92 1.07 -9.85
10OF 60 -2.97 -3.52 -1.66 -0.74 -0.68 1.63 0.89 0.82 -8.89 2.67 -6.22
101A 60 -1.03 -2.24 -0.28 1.83 1.40 -0.23 -0.81 -1.87 -1.72 -1.51 -3.23
1016 60 -3.62 -4.55 -3.08 -6.14 -3.24 -0.74 -0.57 -1.14 -17.41 -5.69 -23.09
1010 60 -3.06 -0.82 0.68 -1.02 0.82 2.06 -1.36 -0.42 -4.23 1.091 -3.13,
Total -118.28 -72.69 -19.73 -13.82 -28.51 2.40 0.64 -8.02 -224.59 -33.50 -258.07
Vertical double lines indicate location of reef structure at time of monitoring survey.




Table 1ll1-2b

P.E.P. Reef Monitoring Volume changes BETWEEN survey lines dated November 1994 and December 1994
Profile Dist. b/ Dist. to Area ofcel Volume Change (cubic yards) Inner Outer Inner Cu Outer Cum
Lines lines(ft) Reef (ft) (sq.yards) CellI Cell 2 Cell 3 Cell 4 Cell 5 Cell 6 Cell 7 Cell 8 Chg(cyds Chg(cyds Chg(cyds) Chgs(yads)

92F-93B 400 93B-93C 200 93C-93D 200 93D-93E 200 93E-94A 200 94A-94B 200 94B-94C 200 94C-94D 200 94D-94F 300 94F-94G 150 94G-94H 150 94H-94J 200 94J-95A 200 95A-95B 100 95B-95C 100 95C-95D 100 95D-95E 100 95E-95E1 75 95E1-95F 75 95F-95F1 75 95F1-96A 75 96A-96A1 75 96A1-96B 75 96B-96B1 75 96B1-96C 75 96C-96C1 100 96C1-96D 100 96D-96E 200 96E-96F 200 96F-96G 200 96G-979 228 979-97A 200 97A-97B 200 97B-97C 200 97C-97D 200 97D-97E 200 97E-97F 150 97F-98A 150 98A-98B 150 98B-98C 150 98C-98E 200 98E-98G 200 98G-98H 100
98H-981 100 981-98J 100 98J-98A 100 99A-99A1 75 99A1-99B 75 99B-99B1 75 99B1-99C 75 99C-99C1 75 99C1-99D 75
99D-99E 150 99E-99F 200 99F-100A 200 100A-100B 200 100B-100C 200 100C-100D 200 100D-100E 200 100E-100F 200 100F-101A 200 101A-101B 200 101B-101C 200

2667 1333 1333 1333 1333 1333 1333 1333 2000 1000 1000 1333 1333 667 667 667 778 320 646
300 646
320 646
300 562
500
500 542 280 438
140 417
160 511
208 1244
240 1222
200 1144
212 1222
228 1256
224 1211 212 1178
212 1167
208 1089
184 767
184 800
200 858
212 892
216 1233
228 1267
228 650
240 694
260 744
276 783
288 612
300 631
306 569
500
500 500 1000 1333 1333 1333 1333 1333 1333 1333 1333 1333 1333

-1903 -982 773
-205 -1136 -88
-4 -821 -427
-43 -577 -246
-197 -713 -191
-162 -272 116
-71 499 434
-249 311 252
-459 -17 20
-249 -100 11
-166 -161 121
-18 -477 -233 281 -204 -324 252 117 -23 99 20 -17
18 -25 23
-209 118 177
-352 113 148
-381 32 10
-265 -59 -62
-105 -218 -32
-70 -351 -59
-130 -479 -145
-319 -520 -218
-260 -259 -140
-58 10 4
-5 47 -23
96 56 -95
226 165 7
168 74 -167
-35 123 -69
-126 335 366
-136 9 189
-282 -223 -96
-378 -114 -130
-312 0 -48
-166 51 165
-177 100 193
-126 104 107
-67 214 154
-264 362 -61
-160 176 -84
-18 22 74
-237 -71 -46
-470 -179 -104
-600 -241 -123
-483 -188 -130
-419 -164 -149
-199 -88 -118
-100 34 -56
-153 48 58
-212 -83 98
-506 -179 16
-561 -139 -193
-712 -416 -297
-719 -565 -203
-468 -566 -223
-495 -568 -277
-691 -718 -278
-703 -806 -326
-400 -577 -194
-465 -680 -336
-669 -538 -240

1099 436 -537 -502 393 624 686 811
210 530 884 1001
405 528 390 105
230 305 362 241
56 -37 140 110
100 -387 -472 -543 30 -577 -493 -270 10 164 225 176
-12 84 24 -17
294 116 -149 -127 278 208 -61 -21
33 -84 -14 -53
59 90 120 66
-28 33 30 27
-83 38 100 99
-7 -55 -28 -59
141 -142 -132 -176
-67 -34 -16 -25
-150 -30 19 82
-123 -54 9 103
-89 -41 -12 10
-136 -93 6 -83
-187 -158 -68 -102
-96 -78 -65 -32
-7 28 13 -57
-81 -94 -92 -103
-97 -436 -238 -141
-103 -274 -122 -93
-263 -166 -284 -118
-132 -282 -384 18
111 -202 -316 6
66 -61 -183 -342 54 -56 8 -258
29 -270 -88 30
-188 -237 -188 21
-64 42 -5 23
14 0 -38 -98
-49 -245 -110 -73
-47 -335 -152 -62
-237 -151 -18 -143
-255 -54 214 -123
-113 -127 11 -75
-106 -119 -155 -42
28 -46 -79 50
-4 -100 162 177
-85 -95 131 172
-41 -45 57 31
-17 -97 -62 -14
-17 -222 -29 105
96 -146 49 70
67 -84 33 51
-17 -23 152 188
-58 65 7 168
-206 1 116 150
-87 55 185 17
83 74 77 0
39 114 217 65
-81 -98 261 -92
-146 -144 327 45
109 73 140 8
-432 -184 -97 -139
-717 -242 132 -193

-1014 -405
-1036 2792
-1041 2834
-461 881
-870 774
-261 253 962 -1697 345 -1506
-446 633
-350 -31
88 -267
-450 223
-214 -187 405 258
74 180
-67 235 79 -318 -78 -571
-405 -60
-536 147
-478 145
-570 -29
-890 -258
-1245 -416
-754 -187
-52 -55
-63 -325 -39 -967 294 -620
-189 -680
-113 -616 687 -323 128 -828
-547 -569
-593 -409
-549 -369
-14 97
131 -85
35 -343 254 -494
-200 -25
-323 225
-35 -238
-460 -306
-726 -29
-968 167
-886 238
-773 135
-422 -168
-139 -155 49 -62
-130 -27
-687 269
-951 139
-1630 245
-1573 177
-1175 70
-1300 235
-1768 -37
-1981 374
-1061 116
-1913 -720
-2164 -459

-1014 -405
-2050 2387
-3091 5221
-3551 6102
-4421 6876
-4682 7129
-3721 5432
-3376 3926
-3822 4560
-4172 4528
-4083 4262
-4533 4485
-4748 4298
-4343 4555
-4270 4735
-4337 4971
-4257 4652
-4336 4082
-4741 4022
-5277 4169
-5755 4313
-6325 4284
-7215 4026
-8460 3610
-9214 3423
-9266 3367
-9329 3042
-9368 2075
-9074 1455
-9263 775
-9376 160
-8690 -164
-8562 -991
-9109 -1560
-9702 -1969
-10250 -2339
-10264 -2242
-10133 -2327
-10098 -2670
-9844 -3164
-10045 -3189
-10368 -2964
-10402 -3203
-10862 -3509
-11588 -3538
-12556 -3371
-13443 -3133
-14216 -2999
-14638 -3167
-14777 -3322
-14727 -3384
-14858 -3411
-15545 -3142
-16496 -3002
-18126 -2757
-19699 -2580
-20874 -2510
-22174 -2274
-23942 -2312
-25923 -1938
-26984 -1822
-28896 -2542
-31060 -3001

-16249 -11334 -2755

-721 -2797 600

Vertical double lines indicate location of reef structure at time of monitoring survey.
Ill-5

63914

50 -853 -31u59 -2999




Table 111-2c

P.E.P. Reef Monitoring Elevation changes BETWEEN survey lines dated November 1994 and December 1994 Profile Dist. b/ Dist. to Area of cell Elevation Change (feet) Inner Outer Total
Line lines(ft) Reef (ft) (sq.yards)I Cell 1 Cell 2 Cell 31 Cell 41 Cell 5 Cell 6 Cell 7 Cell 8 Chg(ft) Chg(ft) Chg(ft)

92F-93B 400 93B-93C 200 93C-93D 200 93D-93E 200 93E-94A 200 94A-94B 200 94B-94C 200 94C-94D 200 94D-94F 300 94F-94G 150 94G-94H 150
94H-94J 200 94J-95A 200 95A-95B 100 95B-95C 100 95C-95D 100 95D-95E 100 95E-95E1 75 95E1-95F 75 95F-95F1 75 95F1-96A 75 96A-96A1 75 96A1-968 75 96B-96B1 75 96B1-96C 75 96C-96C1 100 96C1-96D 100 96D-96E 200 96E-96F 200 96F-96G 200 96G-979 228 979-97A 200 97A-97B 200 97B-97C 200 97C-97D 200 97D-97E 200 97E-97F 150 97F-98A 150 98A-98B 150 98B-98C 150 98C-98E 200 98E-98G 200 98G-98H 100
98H-981 100 981-98J 100 98J-98A 100 99A-99A1 75 99A1-99B 75 998-9981 75 99B1-99C 75 99C-99C1 75 99C1-99D 75 99D-99E 150 99E-99F 200 99F-100A 200 IOOA-100B 200 100B-100C 200 100C-100D 200 100D-100E 200 100E-100F 200 10OF-101A 200 101A-101B 200 101B-101C 200

2667 1333 1333 1333 1333 1333 1333 1333 2000 1000 1000 1333 1333 667 667 667 778 320 646
300 646
320 646
300 562
500 500 542 280 438
140 417
160 511
208 1244 240 1222 200 1144 212 1222 228 1256 224 1211 212 1178 212 1167 208 1089 184 767
184 800
200 858
212 892
216 1233 228 1267 228 650
240 694
260 744
276 783
288 612
300 631
306 569
500 500 500 1000 1333 1333 1333 1333 1333 1333 1333 1333 1333 1333

-2.14
-0.46
-0.01
-0.10
-0.44
-0.36
-0.16
-0.56
-0.69
-0.75
-0.50
-0.04
0.63 1.13 0.44 0.08
-0.80
-1.64
-1.77
-1.23
-0.56
-0.42
-0.78
-1.77
-1.78
-0.42
-0.03
0.23 0.55 0.44
-0.09
-0.30
-0.34
-0.72
-0.97
-0.86
-0.65
-0.66
-0.44
-0.22
-0.64
-0.38
-0.08
-1.03
-1.90
-2.30
-2.37
-1.99
-1.05
-0.60
-0.92
-1.27
-1.52
-1.26
-1.60
-1.62
-1.05
-1.11
-1.56
-1.58
-0.90
-1.05
-1.51

-1.10
-2.56
-1.85
-1.30
-1.60
-0.61
1.12 0.70
-0.03
-0.30
-0.48
-1.07
-0.46
0.52 0.09
-0.11
0.46 0.52 0.15
-0.27
-1.16
-2.11
-2.87
-2.88
-1.78
0.07 0.27 0.14 0.41 0.19 0.30 0.80 0.02
-0.57
-0.29
0.00 0.20 0.38 0.36 0.72 0.88 0.42 0.10
-0.31
-0.72
-0.92
-0.92
-0.78
-0.46
0.20 0.29
-0.50
-0.54
-0.31
-0.94
-1.27
-1.27
-1.28
-1.61
-1.81
-1.30
-1.53
-1.21

0.87
-0.20
-0.96
-0.55
-0.43
0.26 0.98 0.57 0.03 0.03 0.36
-0.52
-0.73
-0.10
-0.08
0.10 0.68 0.69 0.05
-0.29
-0.17
-0.36
-0.87
-1.21
-0.96
0.03
-0.14
-0.23
0.02
-0.44
-0.17
0.88 0.47
-0.25
-0.33
-0.13
0.65 0.73 0.37 0.52
-0.15
-0.20
0.34
-0.20
-0.42
-0.47
-0.64
-0.71
-0.62
-0.33
0.35 0.59 0.05
-0.43
-0.67
-0.46
-0.50
-0.62
-0.62
-0.73
-0.44
-0.76
-0.54

1.24 0.88 0.47 0.91 0.52 0.13 0.22 0.07 0.01
-0.04
0.88 0.63 0.07 0.26
-0.12
-0.37
-0.03
0.06
-0.31
-0.70
-0.66
-0.54
-0.82
-1.04
-0.66
-0.05
-0.48
-0.23
-0.25
-0.69
-0.32
0.26 0.16 0.14 0.07
-0.52
-0.25
0.05
-0.17
-0.16
-0.58
-0.60
-0.52
-0.46
0.11
-0.02
-0.41
-0.19
-0.09
-0.10
0.58 0.40
-0.05
-0.13
-0.46
-0.20
0.19 0.09
-0.18
-0.33
0.25
-0.97
-1.61

0.49 1.40 1.19 1.19 0.69
-0.08
-0.87
-1.30
0.25 0.25 0.35 0.47
-0.19
0.40 0.15 0.17
-0.21
-0.66
-0.16
-0.14
-0.29
-0.24
-0.56
-0.88
-0.54
0.20
-0.55
-1.05
-0.67
-0.43
-0.69
-0.48
-0.15
-0.14
-0.70
-0.65
0.17 0.00
-0.86
-1.13
-0.37
-0.13
-0.58
-0.51
-0.19
-0.38
-0.47
-0.21
-0.51
-1.33
-0.88
-0.51
-0.07
0.15 0.00 0.12 0.17 0.26
-0.22
-0.33
0.16
-0.41
-0.55

-0.60
1.54 1.99 0.88 0.81 0.32
-1.06
-1.11
0.34 0.07
-0.45
-0.14
-0.03
0.54 0.14 0.45
-0.11
-0.61
-0.07
0.09 0.05
-0.07
0.03
-0.38
-0.45
0.09
-0.54
-0.57
-0.30
-0.75
-0.94
-0.76
-0.45
0.02
-0.23
-0.52
-0.02
-0.14
-0.38
-0.51
-0.04
0.51 0.05
-0.67
-0.32
0.62 0.64 0.27
-0.33
-0.17
0.29 0.20 0.46 0.02 0.26 0.42 0.17 0.49 0.59 0.74 0.32
-0.22
0.30

-0.57
1.82 2.25 0.24 0.54 0.25
-1.22
-0.61
0.26
-0.05
-0.38
-0.05
-0.12
0.30 0.12 0.44
-0.23
-0.82
-0.12
0.38 0.55 0.06
-0.50
-0.56
-0.22
-0.41
-0.60
-0.34
-0.23
-0.31
0.04 0.01
-0.85
-0.66
0.08 0.06 0.09
-0.37
-0.25
-0.21
-0.35
-0.29
-0.34
-0.18
0.20 0.68 0.84 0.15
-0.07
0.63 0.42 0.30 0.57 0.38
0.34 0.04 0.00 0.15
-0.21
0.10 0.02
-0.31
-0.43

0.22 1.51 0.94
-0.32
-0.30
0.09
-0.66
-0.37
0.10
-0.37
-0.32
0.22
-0.08
-0.08
0.40
-0.01
-0.68
-0.56
0.07 0.35 0.46 0.08
-0.53
-0.49
-0.08
-0.28
-0.21
-0.37
-0.32
-0.29
0.08 0.45
-0.60
-0.67
-0.21
0.10 0.14 0.19 0.30 0.19 0.70 0.45
-0.22
0.04 0.19
-0.27
0.15 0.44 0.02
-0.05
-0.21
-0.16
-0.14
-0.22
-0.05
-0.18
-0.18
-0.36
-0.25
0.33
-0.24
-0.68
-0.35

-1.14 -0.46
-2.33 6.28
-2.34 6.38
-1.04 1.98
-1.96 1.74
-0.59 0.57 2.16 -3.82 0.78 -3.39
-0.67 0.95
-1.05 -0.09
0.27 -0.80
-1.01 0.50
-0.48 -0.42 1.82 1.16 0.33 0.81
-0.30 1.06 0.31 -1.23
-0.36 -2.65
-1.88 -0.28
-2.49 0.68
-2.55 0.77
-3.42 -0.18
-5.34 -1.55
-6.90 -2.30
-5.17 -1.29
-0.37 -0.40
-0.37 -1.91
-0.09 -2.33 0.72 -1.52
-0.50 -1.78
-0.28 -1.51 1.64 -0.77 0.32 -2.05
-1.39 -1.45
-1.52 -1.05
-1.51 -1.02
-0.05 0.38 0.49 -0.32
0.12 -1.20 0.85 -1.66
-0.49 -0.06
-0.76 0.53
-0.16 -1.10
-1.99 -1.32
-2.93 -0.12
-3.71 0.64
-4.34 1.17
-3.67 0.64
-2.23 -0.89
-0.83 -0.93 0.30 -0.37
-0.78 -0.16
-2.06 0.81
-2.14 0.31
-3.67 0.55
-3.54 0.40
-2.64 0.16
-2.93 0.53
-3.98 -0.08
-4.46 0.84
-2.39 0.26
-4.30 -1.62
-4.87 -1.03

-1.60
3.95 4.03 0.95
-0.22
-0.02
-1.66
-2.61
0.28
-1.14
-0.53
-0.51
-0.90
2.98 1.14 0.76
-0.92
-3.01
-2.16
-1.81
-1.78
-3.60
-6.89
-9.20
-6.46
-0.77
-2.28
-2.43
-0.80
-2.28
-1.79
0.87
-1.73
-2.84
-2.58
-2.53
0.32 0.17
-1.08
-0.81
-0.55
-0.23
-1.26
-3.31
-3.04
-3.07
-3.18
-3.03
-3.12
-1.76
-0.08
-0.94
-1.25
-1.83
-3.12
-3.14
-2.49
-2.40
-4.06
-3.62
-2.13
-5.92
-5.90

63914 -48.45 -31.77

-9.01 -6.66 -13.04 0.77 0.45 -3.15 -95.86 -15.01 -110.92

Vertical double lines indicate location of reef structure at time of monitoring survey.




Table 111-3a

P.E.P. Reef Monitoring Volumetric changes on survey line dated July 1992 and December 1994 Profile Dist. to Length of Volume Chan e (Cu. yards/linear foot) 1 1SInner Outer
Line Reef (ft) ICells (ft) ellI Cell 21 Cell 31 Cell 4 Cell 51 Cell 61 Cell 71 Cell 8ubtotal ISubtotal Total

12.94 -3.51 1.60 1.08 -2.98
-0.41 -11.32 -0.27 1.57 2.29 2.65 -6.47 1.45 1.77 2.55 1.42 -4.80 3.85 1.89 0.65 1.05 -4.62 -6.44 -0.65 1.66 0.12 -5.71 -0.54 0.59 1.22
-4.52 -2.53 -0.21 0.04 0.82
-3.12 3.23 0.72 -0.06 -2.74
-3.85 -1.03 -1.12 -1.13 -1.22
-8.57 -2.63 0.33 0.79 1.74
-3.50 -0.47 -3.32 -2.47 -3.39 0.84 -5.57 -8.53 -3.35 -0.78 1.13 -5.40 -6.07 -1.73 -2.03
-5.71 -2.73 0.63 1.28 2.57
-4.78 -2.69 -0.18 0.20 0.62
-4.26 -2.76 0.07 -0.26 -1.59
-1.68 -0.52 -0.15 0.09 1.08
-4.70 -11.02 -9.23 -6.96 -3.53
-9.44 -16.08 -12.03 -8.60 -1.97 0.07 -9.65 -13.00 -11.01 -8.55

92F
93B 93C 93D 93E
94A 94B 940 940 94F 94G 94H 94J 95A 95B 950 95D 95E 95F 96A 96B 96C 960 96E 96F 96G 97A 97B 970 97D 97E 97F 98A 98B 98C 98E 98G 98H 981 98J 99A
99B 990 99D 99E 99F 1 OQA
100OB 1 000 1000D 1 OQE
1QOF 101 A
101B 1010

60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 320 80
320 70
60 60 140 35
208 50
240 60
200 57
212 54
224 58
212 53
212 53
208 52
184 47
184 47
200 52
212 52
216 55
228 54
228 57
240 60
260 65
276 68
288 71
306 77
60 60 60 60 60 60 60 60 60 60 60 60 60

-4.73
-4.08
-8.73
-6.76
-8.82
-7.48
-7.60
-5.06
-4.59
-4.22
-3.73
-3.75
-3.38
-2.88
-4.44
-1.41
-0.29
-1.10
-0.37
0.01 2.91
4.53 3.27 7.32 0.09 1.07 5.33 6.66 7.67
4.71 9.29 5.73 5.72 3.69

-11.81
-4.15
-2.82
-7.81
-6.00
-8.85
-7.60
-9.04
-7.85
-5.80
-5.21
-3.68
-3.84
-3.98
-4.40
-8.25
-3.21
-2.05
-4.39
-5.23
-6.38
-5.74
0.14
-0.74
1.89
-1.98
-0.86
2.75 2.38
4.35 3.75
4.01 1.41
-0.09
1.54

-9.92 -8.04
-3.40 -1.95
-3.70 -3.38
-3.93 -0.68
-4.99 -3.21
-4.96 -1.12
-5.40 -1.01
-7.00 -0.99
-5.24 -4.02
-4.49 -2.45
-4.11 -2.15
-3.55 -1.87
-2.18 0.07
-2.55 -3.33
-3.62 -3.93
-6.76 3.20
-2.08 0.01
-3.09 -1.51
-2.59 2.32
-4.16 3.09
-5.74 0.86
-4.34 -4.73
-2.25 -11.07
-4.96 -8.13
-2.66 -4.45
-2.06 -4.71
-3.32 -3.65 0.17 -3.18
-0.01 -1.69
-0.61 -5.73
-0.80 -1.42
-0.24 -0.77 0.42 -0.82
-4.84 -6.52
-2.10 -1.45

-3.46
2.34 4.23 4.36 0.03
2.10 2.40
-2.66
-1.51
-1.72
-3.65
-0.75
-0.89
4.20 0.78
-1.62
0.81
-5.00
1.23
-3.40
-4.16
-1.08
-2.60
-0.25
-2.52
-2.05
0.29
-1.88
-1.63
-3.29
-0.59
0.05
-0.73
-1.65
-2.85
4.30
-1.82
-3.72
-0.77
6.10
4.40
-3.95
-6.86
-7.56
-4.08
-5.84
-0.90
-2.78
-0.16
-2.92
-2.19
-1.44
0.03
-5.79
0.21

-0.33
1.99
4.48 5.62
0.44 1.42 3.03
-2.17
-1.14
-2.99
-2.32
-0.28
-2.13
3.49 2.87
-2.87
-2.96
-5.46
1.74 0.83
-3.38
-1.17
-2.76
0.14
-2.92
-1.86
1.63
-0.87
0.11
-2.39
-1.75
0.48
-0.26
0.20
-1.03
-1.10
-2.19
-1.38
5.47 2.15 0.98
-3.34
-2.13
-5.51
-5.19
-5.39
3.27
-2.19
1.87
-1.42
-1.41
-0.29
-0.53
-4.42
-2.92

0.13 3.29
4.10 1.87 0.83 1.05 3.79
-1.60
-0.06
-3.80
-0.43
0.45
-0.35
2.13 3.60
-2.67
-7.33
-5.69
4.42 0.82
-1.81
-0.20
-2.58
-1.77
-0.90
-3.82
-0.02
0.32
-0.89
-2.12
-0.28
0.28
-0.01
-0.21
1.69
-1.31
-1.14
-0.90
4.44 0.81
-0.12
2.48 0.47
-4.27
-5.25
-2.93
3.95
-0.46
2.18
-2.55
1.48
-0.24
-0.09
-0.79
-1.49

-13.78 -6.63
-10.43 9.91
-0.60 15.36 2.35 12.50
-10.66 2.95
-5.53 5.78
-7.21 10.03 0.78 -9.17
-7.13 -3.92
-10.09 -6.78
-9.76 -9.79
-16.61 -1.37
-12.07 -5.39
-6.54 12.40
-7.46 7.86
-7.20 -8.75
-2.26 -8.40
-31.90 -19.69
-46.15 5.42
-33.58 -10.31
-32.80 -17.39
-17.68 -4.42
-15.08 -11.33
-28.56 -2.57
-31.34 -9.55
-32.86 -8.84
-27.12 0.88
-28.16 -3.41
-22.25 -6.44
-16.'51 -10.25
-14.32 -4.77
-12.01 -1.07
-12.15 -0.93
-9.70 -4.99
-12.12 -6.12
-24.13 5.09
-4.92 -5.14
-3.20 -7.51
-7.45 11.46
-9.62 12.16
-11.26 6.12
-2.07 -9.54 4.75 -19.58
-1.74 -25.48 7.76 -18.98
-1.79 -18.86
-1.31 2.68 11.22 -8.62 14.32 2.19 14.30 -12.63 10.40 -3.53 17.64 -2.74 14.05 -1.41 4.80 -17.51 4.32 -5.65

Total -80.41 -122.02 -161.98 -147.98 -101.99 -62.86 -38.24 -13.50 -512.42 -216.67 -729.07
Vertical double lines indicate location of reef structure at time of monitoring survey.

-0.76 -10.32

-5.39
-4.48
-8.09
-13.59
-10.23
-6.64
-4.52
-4.09
-1.63
-0.79
-1.04
-2.38
0.21
-1.22
-4.69
1.79 2.23 0.63
0.14 0.85 5.09 2.32 0.70
1.22 2.16 1.80 2.98 5.29 2.89
2.74 4.58 6.50
4.02 1.19

-20.42
-0.52
14.76 14.85
-7.71
0.25 2.82
-8.40
-11.05
-16.86
-19.55
-17.98
-17.47 5.86
0.40
-15.95
-10.66
-51.59
-40.73
-43.89
-50.20
-22.09
-26.41
-31.13
-40.89
-41.70
-26.24
-31.56
-28.69
-26.76
-19.09
-13.08
-13.07
-14.69
-18.24
-19.04
-10.06
-10.72
4.01 2.54
-5.13
-11.61
-14.83
-27.21
-11.22
-20.65 1.37 2.61 16.52 1.68 6.86
14.89 12.64
-12.71
-1.33




Table 111-3b

P.E.P. Reef Monitoring Elevation changes between survey lines dated July 1992 and December 1994

Profile Dist. b/ Dist. to Area of cel Volume Change (cubic yards) Inner Outer Inner Cum Outer Cum
Lines lines(ft) Reef (ft) (sqyards) I Celll I Cell 2 Cell 3 Cell 4 Cell 5 Cell 6 Cell 7 Cell 8 Chg(cyds) Chg(cyds) Chg(cyds) IChgs(yads)

92F-93B 400 93B-93C 200 93C-93D 200 93D-93E 200 93E-94A 200 94A-94B 200 94B-94C 200 94C-94D 200 94D-94F 300 94F-94G 150 94G-94H 150 94H-94J 200 94J-95A 200 95A-95B 100 95B-95C 100 95C-95D 100 95D-95E 100 95E-95F 75 95F-96A 75 96A-96B 75 96B-96C 75 96C-96D 100 96D-96E 200 96E-96F 200 96F-96G 200 96G-97A 228 97A-97B 200 97B-97C 200 97C-97D 200 97D-97E 200 97E-97F 150 97F-98A 150 98A-98B 150 98B-98C 150 98C-98E 200 98E-98G 200 98G-98H 100 98H-981 100 981-98J 100 98J-98A 100 99A-99B 75 99B-99C 75 99C-99D 75 99D-99E 150 99E-99F 200 99F-100A 200 100A-100B 200 100B-100C 200 100C-100D 200 100D-100E 200 100E-100F 200 100F-101A 200 101A-101B 200 101B-101C 200

2667 1333 1333 1333 1333 1333
1333 1333
2000 1000 1000 1333 1333
667 667 667 778
320 646
320 646
500 542 140 417
208 1244
240 1222
200 1144
212 1222 224 1211 212 1178
212 1167
208 1089
184 767
184 800
200 858
212 892
216 1233 228 1267 228 650
240 694
260 744
276 783
288 612
306 569
500 1000 1333 1333 1333 1333 1333
1333 1333 1333
1333 1333

-2670 -2967 265 529 -137 -224 331 224 -1779 118 334 484 657 647 406 -1127 530 366 320 859 1010 247 -942 -259 124 231 439 606 117 -1032 -698 -6 288 213 186
-440 -823 -74 64 204 449 445
-764 70 52 -1 -192 -26 86
-697 220 -40 -118 -396 -417 -330
-1863 -549 -119 -51 78 -485 -619
-905 -233 -224 -126 -124 -403 -398
-199 -453 -889 -437 -313 -330 -195 198 -1097 -1461 -508 -281 -164 -241
-458 -813 -544 -46 55 331 136
-525 -271 22 74 160 249 318
-452 -272 -5 -3 -49 -42 0
-297 -164 -4 -8 -25 -40 -292
-319 -577 -469 -343 -122 -210 -421
-1061 -2032 -1594 -1167 -412 -283 -279
-703 -1930 -1877 -1471 -789 -163 193
-51 -1498 -1860 -1569 -1244 -568 -192
-461 -1129 -1197 -999 -750 -394 -342
-987 -881 -697 -710 -534 -369 -393
-1257 -1281 -1062 -763 -406 -285 -262
-2168 -1549 -1381 -892 -389 -277 -278
-2382 -1557 -1485 -995 -432 -457 -477
-3375 -3259 -3290 -2072 -424 -353 -46
-1117 -1508 -1664 -1240 -199 -159 76
-862 -1266 -1689 -1224 -501 -351 -76
-572 -965 -1365 -973 -648 -492 -228
-242 -881 -1101 -860 -461 -388 -414
-138 -596 -667 -575 -302 -41 -95
-257 -561 -564 -430 -135 -51 17
-163 -535 -587 -355 -245 -178 -4
-76 -470 -628 -463 -545 -337 -62
-591 -732 -1265 -1038 -73 145 -213
-290 -585 -1146 -884 321 248 -329 201 -85 -263 -258 -75 -277 -178 143 -70 -322 -284 40 -224 204 39 -74 -481 -338 271 266 381 50 -18 -580 -495 198 525 157 446 219 -909 -756 -290 34 -177 556 559 -420 -494 -1185 -810 -410 227 585 -45 -540 -1440 -1081 -573 144 794 86 -572 -944 -873 -803 337 741 -9 -472 -916 -992 -1058
395 117 -284 -538 -836 -674 -211 477 640 189 -315 -683 -369 108 827 1199 513 16 -487 -295 -33
818 1434 673 -62 -742 -308 44 563 1238 810 -142 -715 -511 -283 732 1400 776 -105 -219 -363 -170 1107 1502 543 17 -160 -141 -82
1052 1144 132 -442 -734 -576 -494 521 941 145 -694 -797 -558 -733

-4843
-1103 175 -831
-1619
-1274
-643 -635
-2582
-1489
-1978
-2868
-1861
-700 -733 -473
-1708
-5854
-5980
-4979
-3786
-3276
-4364
-5991
-6420
-11996
-5528
-5041
-3876
-3083
-1975
-1812
-1639
-1637
-3625
-2905
-406 -533 -853
-1044
-999 201 226 452 598 -310 991 2555 2863 2470 2804 3169 1886 913

-4843 655
-5946 3182 -5771 5968
-6602 7514 -8221 8387 -9495 9969
-10139 10055
-10774 8746
-13357 7141
-14845 5899
-16823 5063
-19691 4387
-21552 5088
-22252 6100
-22985 6056
-23458 5198
-25166 3794
-31020 2724
-37000 2357
-41979 280
-45765 -1356
-49041 -2930
-53405 -4320
-59395 -5531
-65815 -7370
-77811 -8962
-83339 -9214
-88380 -10198
-92256 -11867
-95339 -13369
-97314 -13807
-99126 -13957
-100764 -14400
-102401 -15233
-106027 -15336
-108931 -15341
-109338 -15973
-109870 -15776
-110724 -14595
-111767 -13681
-112767 -13937
-112566 -16122
-112340 -19501
-111888 -22835
-111290 -26619
-111600 -28237
-110609 -28831
-108054 -29473
-105192 -30516
-102722 -32132
-99918 -32760
-96749 -33175
-94864 -35067
-93951 -37383

Total 58370 -16515 -23758 -28364 -25310 -17701 -11124 -6446 -2109 -93949 -37386
Vertical double lines indicate location of reef structure at time of monitoring survey.

111-8




Table 111-3c

P.E.P. Reef Monitoring Elevation changes between survey lines dated July 1992 and December 1994 Profile Dist. b/I Dist. to Area of cel Elevation Change (feet) Inner Outer Total
Line lines(ft) Reef (ft) (sq.yards) CelllI Cell 2 Cell 3 Cell 41 Cell 5 Cell 6 Cell 7 Cell 8 Chg(ft) Chg(ft) Chg(ft)

92F-93B 400 938-93C 200 93C-93D 200 93D-93E 200 93E-94A 200 94A-94B 200 94B-94C 200 94C-94D 200 94D-94F 300 94F-94G 150 94G-94H 150 94H-94J 200 94J-95A 200 95A-95B 100 958-95C 100 95C-95D 100 95D-95E 100 95E-95F 75
95F-96A 75
96A-96B 75
96B-96C 75
96C-96D 100 96D-96E 200 96E-96F 200 96F-96G 200 96G-97A 228 97A-97B 200 976-97C 200 97C-97D 200 97D-97E 200 97E-97F 150 97F-98A 150 98A-98B 150 98B-98C 150 98C-98E 200 98E-98G 200 98G-98H 100 98H-981 100 981-98J 100 98J-98A 100 99A-99B 75
99B-99C 75
99C-99D 75
99D-99E 150 99E-99F 200 99F-100A 200 1OA-1 008 200 10OB-100C 200 100C-100D 200 100D-100E 200 100E-100F 200 10OF-101A 200 101A-101B 200 1018-101C 200

2667 1333 1333 1333
1333 1333 1333 1333 2000 1000 1000
1333 1333 667 667 667 778 320 1333 320 1167
1000
792 140 967
208 1244 240 1222 200 1144
212 2422 224 1211 212 1178 212 1167
208 1089 184 767
184 800
200 858
212 892
216 1233 228 1267 228 650
240 694
260 744
276 783
288 1238 306 1138
1000 1000
1333 1333 1333 1333 1333 1333
1333 1333 1333 1333

-3.00
0.50 0.91
0.56 0.26
-0.99
-1.72
-1.57
-2.79
-2.72
-0.60
0.44
-1.03
-2.36
-2.04
-1.34
-1.23
-2.39
-1.81
-0.15
-1.75
-3.06
-3.03
-5.32
-6.24
-4.18
-2.77
-2.19
-1.47
-0.67
-0.54
-0.96
-0.57
-0.26
-1.44
-0.69
0.93 0.62 0.16 0.19 1.08 1.47 0.68 0.43
0.76 0.89 1.07 1.86 1.84 1.27 1.65 2.49 2.37 1.17

-3.34
-4.00
-2.54
-2.12
-2.32
-1.85
0.16 0.50
-0.82
-0.70
-1.36
-2.47
-1.83
-1.22
-1.23
-0.74
-2.23
-4.57
-4.96
-4.49
-4.28
-2.73
-3.09
-3.80
-4.08
-4.04
-3.73
-3.23
-2.48
-2.43
-2.33
-2.10
-1.87
-1.58
-1.78
-1.39
-0.39
-0.30
-0.30
-0.07
0.53 1.47
1.76 2.38 1.67 0.26
1.44 2.70 3.23 2.79 3.15 3.38 2.57 2.12

0.30
0.26 1.19
-0.58
-1.57
-0.17
0.12
-0.09
-0.18
-0.67
-2.67
-3.29
-1.22
0.10
-0.02
-0.02
-1.81
-3.59
-4.83
-5.58
-4.54
-2.16
-2.56
-3.39
-3.89
-4.08
-4.12
-4.30
-3.51
-3.03
-2.61
-2.12
-2.05
-2.11
-3.08
-2.71
-1.21
-1.39
-1.94
-2.22
-2.20
-1.11
-0.14
0.26
-0.02
-0.64
0.42 1.15 1.51
1.82 1.75 1.22 0.30 0.33

0.60 -0.15
0.75 1.09
0.82 0.72
0.28 0.52
-0.01 0.65
0.14 0.46
0.00 -0.43
-0.27 -0.89
-0.08 0.12
-0.38 -0.37
-1.31 -0.94
-1.14 -0.63
-0.10 0.12
0.33 0.72
-0.01 -0.22
-0.04 -0.11
-1.32 -0.47
-2.631 -0.93
-3.78 -2.03
-4.71 -3.73
-3.78 -2.84
-2.20 -1.66
-1.84 -0.98
-2.19 -0.95
-2.61 -1.13
-2.57 -0.53
-3.07 -0.49
-3.12 -1.28
-2.50 -1.67
-2.37 -1.27
-2.25 -1.18
-1.61 -0.51
-1.24 -0.86
-1.56 -1.83
-2.52 -0.18
-2.09 0.76
-1.19 -0.35
-1.23 0.17
-1.36 1.09
-1.90 0.76
-1.83 -0.70
-1.30 -3.12
-1.62 -4.32
-1.72 -2.83
-1.06 -2.06
-1.21 -1.88
-0.71 -1.54 0.04 -1.10
-0.14 -1.67
-0.32 -1.61
-0.24 -0.49 0.04 -0.36
-1.00 -1.65
-1.56 -1.79

-0.25
1.48
1.93 0.99 0.48 1.01
-0.06
-0.94
-0.73
-1.21
-0.99
-0.37
0.75 1.12
-0.19
-0.18
-0.81
-0.64
-0.42
-1.70
-1.49
-1.14
-0.69
-0.68
-1.20
-0.44
-0.39
-0.89
-1.26
-1.07
-0.16
-0.19
-0.62
-1.13
0.35 0.59
-1.28
-0.97
1.07 2.01 0.08
-2.14
-3.24
-2.62
-2.23
-1.52
-0.83
-0.66
-0.69
-1.15
-0.82
-0.32
-1.30
-1.26

0.37 1.46
2.27 1.36 0.42 1.00
0.19
-0.74
-0.93
-1.19
-0.59
-0.54
0.31 1.43 0.00
-1.31
-1.63
-0.63
0.50
-0.58
-1.29
-1.22
-0.63
-0.68
-1.25
-0.06
0.19
-0.19
-0.59
-1.14
-0.37
0.06
-0.02
-0.21
-0.52
-0.78
-0.82
0.88 1.54
0.60
-0.43
-1.08
-1.72
-2.41
-2.38
-0.48
0.24
-0.07
0.10
-0.64
-0.38
-0.18
-1.11
-1.65

0.77 1.66 1.34 0.61 0.42 1.09
0.49
-0.37
-0.87
-0.95
0.01 0.02 0.40
1.29 0.21
-2.25
-2.51
-0.22
1.01
-0.22
-0.57
-0.86
-1.05
-0.66
-1.24
-0.95
0.07
-0.14
-0.77
-0.66
0.00 0.07
-0.06
0.37 0.09
-0.58
-0.47
0.76 1.06 0.13 0.43
0.58
-0.86
-2.14
-1.84
0.23 0.79 0.39
-0.08
-0.24
0.28
-0.07
-0.20

-5.45 0.74
-2.48 5.69
0.39 6.27
-1.87 3.48
-3.64 1.97
-2.87 3.56
-1.45 0.19
-1.43 -2.95
-3.87 -2.41
-4.47 -3.73
-5.93 -2.51
-6.45 -1.52
-4.19 1.58
-3.15 4.56
-3.30 -0.20
-2.13 -3.86
-6.59 -5.42
-13.17 -2.41
-15.38 -0.94
-14.94 -6.23
-14.35 -6.20
-10.17 -4.89
-10.52 -3.35
-14.70 -2.97
-16.83 -4.82
-14.86 -1.97
-13.69 -0.62
-12.84 -2.51
-9.97 -4.29
-8.49 -4.14
-7.73 -1.71
-6.79 -0.56
-5.73 -1.55
-5.51 -2.80
-8.82 -0.25
-6.88 -0.01
-1.87 -2.92
-2.30 0.85
-3.44 4.76
-4.00 3.50
-2.42 -0.62
0.53 -5.76
0.68 -10.14 1.36 -10.00 1.34 -8.51
-0.70 -3.64
2.23 -1.34
5.75 -1.45
6.44 -2.35
5.56 -3.64
6.31 -1.41
7.13 -0.93
4.24 -4.26

-0.511 2.05 -5.211 -3.16

63773 -37.28 -58.68 -76.69 -68.69 -46.55 -29.01 -17.52

-6.77 -241.36 -99.85 -341.21

Vertical double lines indicate location of reef structure at time of monitoring survey.

-4.71
3.20 6.66 1.61
-1.68
0.69
-1.25
-4.38
-6.28
-8.19
-8.44
-7.97
-2.61
1.41
-3.50
-5.99
-12.01
-15.58
-16.32
-21.17
-20.54
-15.05
-13.87
-17.68
-21.65
-16.83
-14.32
-15.35
-14.26
-12.63
-9.44
-7.35
-7.28
-8.31
-9.07
-6.89
-4.79
-1.45
1.32
-0.50
-3.04
-5.23
-9.46
-8.65
-7.17
-4.34
0.89 4.30 4.09 1.92 4.90 6.20
-0.01




Table 111-4a

P.E.P. Reef Monitoring Volumetric changes on survey line dated August 1993 and December 1994
Profile Dist. to Length o Volume Chae (u 'ards/linear foot) Iinner IOuter
Line Reef (ft) Cells (ft) Cell II Cell 21 Cell 31 Cel 4 UCll 51 Cell 61 Cell 71 Cell 81 Subtotal ISubtotal Total

92F
93B 93C 93D 93E
94A 94B 94C 94D 94F 94G 94H 94J 95A 95B 95C 95D 95E 95E1 95F 951 96A 96A1 96B 96B1 960 9601 960 96E 96F 96G 97A 97B 970 970 97E 97F 98A 98B 980 98E 98G 98H 981 98.J 99A
99B 990 990 99E 99F 1 OOA
100OB 1 000 1000 100QE 1 OQE 101A
1018 1010

60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 320 80
300 70
320 70
300 75
60 60 60 280 70
140 35
160 42
208 50
240 60
200 57
212 54
224 58
212 53
212 53
208 52
184 47
184 47
200 52
212 52
216 55
228 54
228 57
240 60
260 65
276 68
288 71
306 77
60 60 60 60 60 60 60 60 60 60 60 60 60

-7.08 1.84
-0.33 1.37 1.38 5.27 0.34 7.57 0.79 -1.83
-0.14 -0.04
-0.8 1.45
-0.41 2.91
-2.73 -1.49
-6.93 -4.14
-2.36 -2.44 0.53 -3.18 1.58 -0.94 0.58 -0.65
-1.39 -2.26
-3.01 -1.77
-0.7 0.02
-3.68 -2.82
-2.92 -4.4
-3.82 -3.27
-1.44 -3.7 2.27 -2.73 0.55 -3.25 0.69 -2.22 0.77 -1.94
-2.39 -2.84
-1.67 -2.15
-2.22 -2.97
-4.53 -2.86
-7.89 -4.19
-7.6 -5.74
-2.34 -2.42
-1.32 -2.95
-1.87 -2.77
-1.93 -3
-2.59 -2.76
-2.86 -1.88
-2.92 -2
-2 -2.43
-3.7 -2.17
-9.88 -4.45
-7.25 -3.88
-8.9 -3.94
-10.23 -5.05
-10.82 -4.89
-8.92 -4.73
-4.25 -0.48
-1.67 -0.71
-2.38 -4.33
-1.53 -2.29
-0.69 -5.26
-2.79 -4.04
-1.48 -2.79
-0.87 -2.76
-0.67 -0.5
-1.68 -2.35
-0.19 -1.55
-0.63 -3.24
-3.09 -1.09
-2.73 -1.03

2.75 2.25 -0.94 -1.4 8.12 5.02 4.89 3.14 9.63 4.88 4.65 4.22 8.49 3 1.25 2.19
-2.6 0.62 1.45 0.65 0.38 0.43 0.,86 0.99 0.06 -0.81 0.83 1.62 2.65 0.04 -3.15 -2.86
-0.57 -0.85 -2.25 -0.48
-2.87 -0.29 0.68 -0.54
-3.26 -2.25 -2.76 -3.51
-2.76 -0.52 -2.71 -3.06
-0.94 -2 -3.58 -1.02
-0.13 -0.42 0.35 1.62 0.07 1.14 1.05 1.02 0.09 -0.08 -0.98 -1.12 0.49 1.59 1.66 0.77
-4.23 -6.08 -0.37 -3.13
-8.28 -4.18 -0.48 -1.28
-7.58 -4.87 1.01 -0.31
-8.81 -6.24 0.86 0.08
-1.63 -5.73 -4.35 -1.28
-2.68 -5.92 -4.1 -1.52
-2.02 -3.71 -2.87 -3.06
-3.08 -4.67 -4.58 -1.13
-2.39 -1.6 0.6 1.41
-2.2 -1.67 -0.69 0.7
-1.18 -0.49 -1.98 -2.29
-3.87 -2.18 -0.95 -1.22
-4.1 -3.6 -0.89 0.05
-7.09 -2.7 -0.45 -1.55
-3.05 -2.36 -0.94 -0.18
-5.98 -2.52 1.28 -2
-5.11 -2.61 -1.94 -1.26
-4.14 -3.08 -2.24 -4.01
-4.74 -3.77 0.4 1.06
-2.68 -2.14 -0.58 0.26
-3 -1.73 0.05 -0.13
-3.58 -2.73 -1.75 0.22
-4.46 -2.8 -1.61 -1.07
-9.02 -8.36 -1.47 1.48
-5.45 -6.55 -5.78 -2.32
-5.34 -7.-26 -5.41 -1.54
-7.07 -6.13 -4.34 -2.67
-6.22 -6.37 -2.83 1.97
-5.47 -6.06 -1.68 1.14
-2.92 -1.44 0.86 -0.22 0.96 -0.84 -7.91 -5.26
-0.55 -3.24 -5.12 -3.09 0.68 -1.28 -2.49 -1.27
-2.34 -2.75 -4.23 -2.18 0.77 -2.38 -4.16 0.23 1.63 -0.08 -1.91 -0.1
-0.13 -0.09 -2.63 0.72 3.03 1.08 -2.64 -0.75 2.82 -0.39 -2.55 -0.44 2.84 -0.09 0.52 0.7 1.01 0.52 1.04 3.31 1.03 -4.76 -4.52 -2.38 1.27 -0.37 -0.72 0.01

-156.74 -125.13 -104.75 -122.47 -83.24 -32.07

-6.03 4.72 -509.08 -116.69 -625.76

Vertical double lines indicate location of reef structure at time of monitoring survey.

111-10

2.24 3.23 1.15 0.54 4.04 3.69 3.92 0.34 0.54 1.21 0.66 -0.35 1.99 2.72
-2.64 -1.69 2.38 3.86
-1.01 -1.5
-1.41 0.36
-1.47 -0.61
-0.66 -0.51 0.7 -0.99 2.84 3.17
-2.04 0.81
-2.09 -5.93
-4.41 -2.64
-0.73 -1
-1.83 1.28
-0.19 0.49
0 1.23
-0.1 -0.49
-2.82 -1.77 0.41 1.92 1.37 1.83 0.33 0.18
-2.39 -1.71
-2.64 -2.08 0.48 0.26
-0.7 -2.76
0.6 0.45
-3.93 -4.23
-0.19 -0.08
-1.12 -0.35
-1.03 0.56 0.45 -0.08
-0.48 -0.33 0.98 0.17 0.22 2.9
-0.69 1.18
-2.43 -1.67
-0.8 -0.53
4.21 1.91 3.3 0.67 2.19 -1.25
-0.91 -0.65 1.21 2.63
-1.55 -1.66
-3.96 -1.96
-1.37 0.58 3.54 2.89
-0.23 -0.54 2.6 1.34
-0.58 -1.53
-0.21 0.89 1.26 1.91 1.44 -1
-0.66 0.08
-3.81 -0.67

-0.24 3.14 14.19 9.73 21.17 16.59 19.41 7.71
-3.02 3.84 0.64 2.16
-0.1 7.15 5.19 -10.35
-5.65 3.5
-14.23 -2.37
-10.3 -7.32
-5.93 -7.85
-2.31 -5.76
-0.62 1.68
-2.43 8.08
-4.77 -3.35 1.39 -5.59
-16.8 -10.56
-19.78 -3.49
-19.53 0.15
-20.19 1.23
-7.82 -4.4
-11.3 -6.21
-7.26 -10.52
-8.92 -3.38
-9.22 5.22
-7.69 0.53
-6.87 -8.37
-13.44 -6.88
-19.78 -0.1
-23.13 -5.46
-10.17 -0.07
-12.78 -8.87
-12.35 -3.47
-12.16 -7.72
-13.86 0.98
-9.55 0.04
-9.65 -0.89
-10.73 -0.38
-13.13 0.44
-31.72 0.49
-23.13 -12.19
-25.43 -8.28
-28.49 -0.9
-28.3 3.11
-25.18 0.4
-9.09 -0.92
-2.27 -9.33
-10.51 -11.42
-4.43 -9.68
-11.04 -7.2
-8.44 2.49
-2.72 -2.79
-3.85 2.02 2.93 -5.5
-1.59 -2.31 1.01 4.4
-2.34 4.78
-7.9 -7.48
-2.87 -5.19

2.9 23.91 37.76 27.11
0.83 2.8 7.05
-5.15
-2.15
-16.6
-17.62
-13.78
-8.06
1.06 5.65
-8.11
-4.19
-27.36
-23.27
-19.38
-18.97
-12.23
-17.51
-17.78
-12.3
-4
-7.17
-15.24
-20.32
-19.87
-28.59
-10.25
-21.65
-15.82
-19.88
-12.88
-9.51
-10.55
-11.12
-12.69
-31.23
-35.32
-33.71
-29.38
-25.18
-24.78
-10.01
-11.6
-21.92
-14.11
-18.25
-5.95
-5.5
-1.82
-2.57
-3.9
5.4 2.44
-15.38
-8.06




Table 111-4b

P.E.P. Reef Monitoring Volume changes between survey lines dated August 1993 and December 1994 Profile Dist. b/ Dist. to Area of cel Volume Change (cubic yards) Inner Outer Inner Cu Outer Cu
Lines lines(ft) Reef (ft) (sq.yards) [ Cell Cell 2 Cell 3 Cell 4 Cell 5 Cell 6 Cell 7 Cell 8 Chg(cyds Chg(cyds Chg(cyds) Chgs(vads

92F-93B 400 93B-93C 200 93C-93D 200 93D-93E 200 93E-94A 200 94A-94B 200 94B-94C 200
94C-94D 200 94D-94F 300 94F-94G 150 94G-94H 150 94H-94J 200 94J-95A 200 95A-95B 100 95B-95C 100 95C-95D 100 95D-95E 100 95E-95E1 75 95E1-95F 75 95F-95F1 75 95F1-96A 75 96A-96A1 75 96A1-96B 75 96B-96B1 75 96B1-96C 75 96C-96C1 100 96C1-96D 100 96D-96E 200 96E-96F 200 96F-96G 200 96G-97A 228 97A-97B 200 97B-97C 200 97C-97D 200 97D-97E 200 97E-97F 150 97F-98A 150 98A-98B 150 98B-98C 150 98C-98E 200 98E-98G 200 98G-98H 100 98H-981 100 981-98J 100 98J-98A 100 99A-99AB 75 99B-99C 75 99C-99D 75 99D-99E 150 99E-99F 200 99F-100A 200 100A-100E 200 100B-100C 200 100C-100E 200 100D-100E 200 100E-100F 200 100F-101A 200 101A-101E 200 101B-101( 200

2667 1333 1333 1333 1333 1333 1333 1333 2000 1000 1000 1333 1333 667 667 667 778 320 646
300 646
320 646
300 562
500 500 542 280 438
140 417
160 511
208 1244 240 1222 200 1144
212 1222 224 1211 212 1178
212 1167
208 1089 184 767
184 800
200 858
212 892
216 1233 228 1267 228 650
240 694
260 744
276 783
288 612
306 569
500
1000 1333 1333 1333 1333 1333 1333 1333 1333 1333 1333

-1482 642 2175 1454 789 349 680 105 665 1776 990 953 737 519 172 1284 1813 788 590 642 796 113 574 589 362 270 284 446 64 -186 -222 105 232 163 120
-95 141 44 -38 169 260 265
-121 436 271 -76 -233 -124 -65
-314 141 208 -81 -541 -334 -26
-1449 -845 -517 -171 -237 -152 206
-697 -493 -460 -190 -156 -303 -181
-137 -421 -451 -208 -410 -493 -216 211 -412 -370 -252 -629 -408 -214 216 -159 -107 -242 -323 61 4
-40 -145 -3 36 70 132 177
-220 -201 8 53 3 -5 40
-186 -88 29 76 34 -18 -207
-219 -140 -187 -224 64 -118 -325
-247 -271 -469 -3851 -32 -165 -193
-252 -288 -595 -339 20 -60 -96
-197 -261 -615 -417 70 -9 -76
31 -241 -391 -449 -131 -45 -7
105 -224 -162 -437 -317 -105 -4
46 -205 -176 -361 -261 -172 -110 55 -156 -191 -314 -279 -157 -91 -61 -179 -205 -235 -149 10 67
-203 -249 -229 -164 -4 105 85
-194 -256 -169 -108 -133 -79 -103
-675 -584 -505 -267 -293 -350 -503
-1242 -705 -797 -578 -184 -117 -216
-1549 -993 -1118 -630 -135 -150 -22
-1987 -1633 -2027 -1013 -279 -346 -20
-366 -537 -903 -489 34 -218 -333
-318 -572 -1109 -513 -66 -326 -412
-380 -577 -925 -569 -418 -527 -131
-452 -576 -888 -685 -184 -296 -215
-409 -348 -556 -443 -14 98 -43
-434 -291 -425 -290 -39 9 -3
-369 -332 -493 -335 -128 6 37
-427 -345 -603 -415 -252 -64 90
-1358 -662 -1349 -1116 -308 41 -47
-1713 -833 -1447 -1492 -725 -84 -312
-807 -391 -539 -691 -559 -193 -161
-957 -450 -620 -669 -487 -211 170
-1053 -497 -664 -625 -358 -35 375
-987 -481 -584 -622 -225 156 275
-988 -391 -629 -563 -61 69 96
-445 -89 -147 -171 -529 -411 22
-304 -378 30 -306 -977 -626 -26
-293 -497 9 -339 -571 -327 -414
-222 -756 -166 -404 -672 -346 -533
-348 -930 -157 -513 -840 -196 217
-427 -682 240 -246 -608 12 330
-235 -555 150 -16 -454 61 236
-155 -326 290 99 -527 -3 202
-235 -285 585 69 -519 -119 -79
-187 -390 566 -48 -203 26 106
-82 -479 384 43 156 401 270
-372 -433 204 -423 -349 93 77
-582 -212 230 -512 -525 -237 -447

2789 2573 3535 2632 4057 2430 1639 1155
-238 601 53 932
509 -319
-46 -684
-2982 170
-1840 -727
-1217 -1138
-824 -1361
-293 -408
-153 488
-360 237
-169 -447
-771 -807
-1372 -527
-1474 -125
-1490 52
-1051 -119
-717 -398
-696 -627
-607 -521
-680 69
-845 287
-728 -392
-2031 -1525
-3322 -698
-4291 -556
-6661 -1107
-2295 -894
-2513 -1234
-2451 -1119
-2602 -674
-1756 77
-1440 -64
-1529 -96
-1790 4
-4485 93
-5485 -1170
-2428 -1024
-2696 -459
-2839 111
-2674 176
-2571 -39
-852 -769
-958 -1556
-1120 -1583
-1547 -1689
-1948 -471
-1115 -30
-656 -76
-91 -348 134 -780
-59 209
-134 918
-1024 -270
-1077 -1268

2789 6324 10381 12020 11782
11835 12344
12298 9315
7476 6258 5435 5142
4990 4630 4461 3691 2319 844
-646
-1696
-2413
-3110
-3717
-4397
-5242
-5970

2573
5205 7635
8790 9391 10322 10003 9318
9488 8762 7624 6262 5855 6343 6579 6133 5325
4799 4674
4725 4606
4208 3581 3060 3128 3416 3023

-8001 1498
-11323 801
-15614 244
-22274 -863
-24569 -1757
-27083 -2991
-29534 -4110
-32136 -4784
-33892 -4707
-35333 -4771
-36862 -4867
-38651 -4862
-43136 -4769
-48621 -5939
-51049 -6963
-53745 -7422
-56584 -7311
-59258 -7135
-61828 -7174
-62680 -7943
-63638 -9500
-64758 -11082
-66305 -12771
-68253 -13242
-69369 -13272
-70025 -13348
-70116 -13696
-69982 -14476
-70041 -14267
-70175 -13350
-71199 -13620
-72276 -14888

61027 -25354 -18747 -12569 -15599 -11870 -4214

77 1113 -72277 -14885

Vertical double lines indicate location of reef structure at time of monitoring survey.

Total




Table 111-4c

P.E.P. Reef Monitoring Elevation changes between survey lines dated August 1993 and December 1994
Profile Dist. b/ Dist. to Area of cell Elevation Change (feet) Inner Outer Total
Line lines(ft) Reef (ft) (sq.yards)I CellI Cell 2 Cell 3 Cell 41 Cell 51 Cell 61 Cell 7 Cell 8 Chg(ft) Ch (ft) Chg(ft)

92F-93B 400 93B-93C 200 93C-93D 200 93D-93E 200 93E-94A 200 94A-94B 200 94B-94C 200 94C-94D 200 94D-94F 300 94F-94G 150 94G-94H 150 94H-94J 200 94J-95A 200 95A-95B 100 95B-95C 100 95C-95D 100 95D-95E 100 95E-95E1 75 95E1-95F 75 95F-95F1 75 95F1-96A 75 96A-96A1 75 96A1-968 75 96B-96B1 75 96813-96C 75 96C-96C1 100 96C1-96D 100 96D-96E 200 96E-96F 200 96F-96G 200 96G-97A 228 97A-97B 200 97B-97C 200 97C-97D 200 97D-97E 200 97E-97F 150 97F-98A 150 98A-98B 150 98B-98C 150 98C-98E 200 98E-98G 200 98G-98H 100 98H-981 100 981-98J 100 98J-98A 100 99A-99B 75
991-99C 75
99C-99D 75
99D-99E 150 99E-99F 200 99F-100A 200 1O0A-1O0B 200 100B-100C 200 100C-100D 200 100D-100E 200 100E-100F 200 10OF-101A 200 101A-101B 200 101B-101C 200

2667 1333 1333 1333 1333 1333 1333 1333 2000 1000 1000 1333 1333 667 667 667 778 320 667
300 667
320 667
300 583
500 500 500 280 396
140 389
160 483
208 1244 240 1222 200 1144
212 2422 224 1211 212 1178
212 1167
208 1089 184 767
184 800
200 858
212 892
216 1233 228 1267 228 650
240 694
260 744
276 783
288 1238 306 1138
1000 1000 1333 1333 1333 1333 1333 1333 1333 1333 1333 1333

-1.67 0.72 0.24 1.50 0.39 2.89 0.25 1.29 0.14 -0.42
-0.21 0.32
-0.27 0.98
-0.71 0.32
-2.17 -1.27
-2.09 -1.48
-0.41 -1.26 0.47 -0.93 0.49 -0.36
-0.18 -0.65
-0.99 -0.91
-0.84 -0.39
-0.84 -0.54
-1.11 -1.22
-1.14 -1.29
-0.89 -1.18 0.16 -1.24 0.63 -1.35 0.28 -1.23 0.33 -0.94
-0.46 -1.36
-1.57 -1.92
-1.21 -1.59
-1.63 -1.41
-3.05 -1.73
-4.06 -2.60
-2.46 -2.02
-0.91 -1.33
-0.81 -1.46
-0.98 -1.48
-1.25 -1.59
-1.60 -1.36
-1.63 -1.09
-1.29 -1.16
-1.44 -1.16
-3.30 -1.61
-4.06 -1.97
-3.72 -1.80
-4.13 -1.94
-4.24 -2.00
-3.78 -1.84
-2.39 -0.95
-1.17 -0.24
-0.91 -1.14
-0.88 -1.49
-0.50 -1.70
-0.78 -2.09
-0.96 -1.54
-0.53 -1.25
-0.35 -0.73
-0.53 -0.64
-0.42 -0.88
-0.18 -1.08
-0.84 -0.97
-1.31 -0.48

2.45 1.64 0.89
4.00 2.23 2.15
4.08 1.77 1.33
1.33 0.82 0.61
-0.50 0.24 0.52 0.10 -0.08 0.38
0.61 -0.17 -0.52 0.47 -0.18 -1.22
-0.78 -0.26 -0.36
-1.38 -0.57 -0.47
-1.35 -0.62 -1.23
-0.83 -0.57 -1.41
-0.24 -0.54 -0.73
-0.01 0.16 0.31 0.04 0.24 0.02
0.13 0.34 0.15
-0.72 -0.87 0.25
-2.11 -1.731 -0.14
-2.68 -1.53 0.09
-2.77 -1.87 0.31
-2.01 -2.31 -0.67
-0.97 -2.62 -1.90
-1.06 -2.17 -1.57
-1.15 -1.89 -1.68
-1.55 -1.78 -1.13
-1.77 -1.26 -0.03
-1.05 -0.67 -0.83
-1.22 -0.64 -0.71
-1.96 -1.42 -0.45
-2.93 -1.65 -0.35
-2.51 -1.25 -0.35
-2.24 -1.21 0.08
-2.83 -1.31 -0.17
-2.38 -1.46 -1.07
-2.45 -1.89 -0.51
-2.18 -1.73 -0.05
-1.60 -1.09 -0.15
-1.72 -1.17 -0.45
-2.03 -1.40 -0.85
-3.28 -2.72 -0.75
-3.43 -3.53 -1.72
-2.49 -3.19 -2.58
-2.68 -2.89 -2.11
-2.68 -2.52 -1.44
-2.24 -2.38 -0.86
-1.52 -1.36 -0.15
-0.39 -0.45 -1.39 0.09 -0.92 -2.93 0.03 -1.02 -1.71
-0.37 -0.91 -1.51
-0.35 -1.15 -1.89 0.54 -0.55 -1.37 0.34 -0.04 -1.02 0.65 0.22 -1.19 1.32 0.15 -1.17 1.27 -0.11 -0.46 0.87 0.10 0.35
0.46 -0.95 -0.79 0.52 -1.15 -1.18

0.39 1.66 1.44 0.64 0.37 0.59
-0.28
-0.75
-0.23
-0.91
-1.48
-0.92
0.14 0.59
-0.02
-0.08
-0.45
-0.74
-0.27
-0.04
-0.23
-0.63
-1.03
-0.94
0.08 0.81
-0.49
-0.84
-0.29
-0.39
-0.43
-0.54
-0.83
-1.36
-0.81
0.39 0.03 0.02
-0.22
0.10
-0.20
-0.89
-0.91
-0.14
0.60 0.17
-1.08
-1.88
-0.98
-0.78
-0.44
0.03 0.14
-0.01
-0.27
0.06 0.90 0.21
-0.53

0.76 1.17 1.79 1.00 0.27 0.60
-0.15
-0.06
0.31
-0.54
-0.65
-0.48
0.01 0.80 0.18
-0.93
-1.25
-0.87
-0.43
-0.34
-0.04
-0.02
-0.66
-0.54
0.51 0.66
-0.64
-1.21
-0.53
-0.06
-0.02
-0.82
-1.05
-0.34
-0.59
-0.17
-0.01
0.13 0.30
-0.11
-0.74
-0.74
0.74 1.51 1.05 0.23 0.06
-0.08
-1.24
-1.20
0.49 0.74 0.53 0.45
-0.18
0.24 0.61 0.17
-1.01

0.85 0.95 0.90 0.35 0.19 0.53 0.23 0.49 0.53
-0.26
-0.06
-0.25
-0.34
0.49 0.89
-1.15
-1.65
-0.62
0.05 0.30 0.33 0.17
-0.51
0.03 1.07 0.78
-0.47
-0.91
-0.45
-0.65
-0.57
-0.94
-1.10
-0.11
0.06 0.14
-0.11
-0.04
0.77 0.99
-0.12
-0.51
0.30 0.52
-0.11
-0.35
0.39 0.22
-0.81
-0.31
0.78 0.53 0.18
-0.04
-0.14
0.63 0.20
-0.21
-0.13

3.14 2.89 7.95 5.92 9.13 5.47 3.69 2.60
-0.54 1.35 0.12 2.10 1.14 -0.72
-0.10 -1.54
-4.47 0.25
-5.52 -2.18
-3.65 -3.41
-1.85 -3.06
-0.66 -0.92
-0.69 2.20
-1.62 1.07
-0.76 -2.01
-2.97 -3.11
-6.17 -2.37
-6.63 -0.56
-6.70 0.23
-5.40 -0.61
-4.30 -2.39
-4.18 -3.76
-3.64 -3.13
-5.15 0.52
-6.52 2.22
-4.52 -2.43
-4.90 -3.68
-8.15 -1.71
-11.25 -1.46
-8.25 -1.37
-5.69 -2.21
-6.40 -3.14
-6.30 -2.88
-7.17 -1.86
-6.87 0.30
-5.40 -0.24
-5.34 -0.33
-6.02 0.01
-10.91 0.23
-12.99 -2.77
-11.21 -4.72
-11.65 -1.98
-11.44 0.45
-10.24 0.67
-6.23 -0.09
-2.25 -2.03
-2.87 -4.67
-3.36 -4.75
-3.48 -3.80
-4.38 -1.06
-2.51 -0.07
-1.48 -0.17
-0.21 -0.78 0.30 -1.76
-0.13 0.47
-0.30 2.06
-2.30 -0.61
-2.42 -2.85

63866 -69.47 -58.24 -49.11 -55.84 -3.178 -13.9b

Vertical double lines indicate location of reef structure at time of monitoring survey.
111-12

6.03 13.88 14.60 6.29 0.82 2.22 0.43
-1.64
-4.22
-7.70
-7.07
-4.92
-1.58
1.51
-0.55
-2.77
-6.09
-8.54
-7.20
-6.47
-6.02
-6.69
-7.94
-6.77
-4.63
-4.31
-6.95
-8.57
-9.87
-12.71
-9.62
-7.90
-9.54
-9.18
-9.03
-6.57
-5.64
-5.68
-6.01
-10.68
-15.76
-15.93
-13.63
-10.99
-9.57
-6.33
-4.28
-7.54
-8.11
-7.28
-5.44
-2.58
-1.65
-0.99
-1.45
0.34 1.76
-2.91
-5.27

I .~ -~d~.OI ~ 10 L0'*.O0

-2.39 1.92 -232.67 -be- I b -404-0z;