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EAC Agenda 06/01/1988 ENVIRONMENTAL ADVISORY COUNCIL AGENDA June 1, 1988 8:45 A.M. I. ROLL CALL II. APPROVAL OF MINUTES: III. ADDENDA IV. STAFF REPORTS A. PETITIONS ADMINISTRATIVELY APPROVED BY NRMD 1. Petition PDA-88-4C; Thomas T. Crandall, of Collier County Utilities Division, representing the Board of County Commissioners, EX-Officio the Governing Board of Collier County Water-Sewer District; requesting a PUD Amendment to "Foxfire" PUD, Section VI, Tract D, Fire Station site. V. OLD BUSINESS A. R-87-23C; Dr. Neno J. Spagna of Florida Urban Institute, Inc. , representing Hubschman Associates; requesting a zoning change from E to PUD Edenwood. Continued at petitioner's request. VI. PUBLIC HEARINGS A. PU-88-9C; Q. Grady Minor of Q. Grady Minor & Associates. , P.A. , representing Hubschman & Associates; requesting a provisional use "b" of A-2 for Earth mining. B. PDA-88-5C; Alan D. Reynolds, AICP, of Wilson, Miller, Barton Soll, & Peek, Inc. , representing Leisure Technology of Florida, Inc. ; requesting a PUD amendment to Bretonne Park. C. PDA-87-11C; Charles E. Turner of Westinghouse Communities of Naples, Inc. , representing Westinghouse Communities of Naples, Inc. , requesting a PUD Amendment to Pelican Bay PUD. D. STD-88-12C; Shell Western E & P Inc. ; requesting a special treatment permit for 40. 2 miles of seismic lines through various unnamed wetlands in the Area of Critical State Concern just North of Big Cypress National Preserve. VII. NEW BUSINESS VIII. DISCUSSION OF ADDENDA IX. ADJOURNMENT X. WORKSHOP ************************************************************************ NOTES: A. Notify the Natural Resources Management Department (774-8454) no later than 5 P.M. on Monday, May 30, 1988, if you cannot attend this meeting or if you will have conflict and thus will abstain from voting on a particular petition. B. Please refer to notice on first floor, Building F, for the location of the E.A.C. meeting. C. Items added after agenda was sent out. D. No action since last Council meeting. E. On January 7, 1987 the E.A.C. adopted a policy that any person addressing the E.A.C. on behalf of any organization must present a letter from said organization acknowledging them as a representative empowered to make policy related comments on that subject. ********** ********** ********** ********** ********** ANY PERSON WHO DECIDES TO APPEAL A DECISION OF THIS BOARD WILL NEED A RECORD OF THE PROCEEDINGS PERTAINING THERETO, AND THEREFORE MAY NEED TO ENSURE THAT A VERBATIM RECORD OF THE PROCEEDINGS IS MADE, WHICH RECORD INCLUDES THE TESTIMONY AND EVIDENCE UPON WHICH THE APPEAL IS TO BE BASED. ********** ********** ********** ********** ********** ************************************** :********************************* EAC Agenda Form MINUTES OF THE ENVIRONMENTAL ADVISORY COUNCIL DATE: May 18 , 1988 TIME: 8 : 45 A.M. PLACE: 3rd Floor Boardroom, Building "F" , Collier County Government Center, Naples, Florida EAC STAFF PRESENT CARDILLO X PROFFITT X BELOW ABS STEVENS X BENEDICT X EDWARDS X KURGIS X SCHEFF X SNYDER ABS. MINUTES BY: Maureen Kenyon, Deputy Clerk CALLED TO ORDER AT: 8 : 45 A.M. ADJOURNED: 9: 10 A.M PRESIDING: John P. Cardillo, Chairman ADDENDA TO THE AGENDA: 1 . Key Island Boat Dock Petition 2 . Sea Turtle Ordinance 1 Page 1 ENVIRONMENTAL ADVISORY COUNCIL AGENDA May 18, 1988 8:45 A.M. I. ROLL CALL II. APPROVAL OF MINUTES: III. ADDENDA IV. STAFF REPORTS A. PETITIONS ADMINISTRATIVELY APPROVED BY NRMD V. OLD BUSINESS A. R-87-23C; Dr. Neno J. Spagna of Florida Urban Institute, Inc. , representing Hubschman Associates; requesting a zoning change from E to PUD Edenwood. Continued at petitioner's request. VI. PUBLIC HEARINGS A. R-88-7C: Alan D. Reynolds, of Wilson, Miller, Barton, Soll & Peek, Inc. , representing Stefan P. Galazzi, owner and agent for, owners; Joseph A. Galazzi, Earl G. Hodges, and Thelma T. Hodges; requesting a zoning change from RMF-6 to C-6. B. R-88-8C/PU-88-10C: David Evans and Robert Stowers; requesting a zoning change from A-2 to RSF-4 for mixed single family cluster housing. A provisional use "g" of RSF-4 is requested for the cluster housing (duplex) . VII. NEW BUSINESS VIII. DISCUSSION OF ADDENDA IX. ADJOURNMENT X. WORKSHOP Presentation by Shell Western E & P Inc. , on their proposed seismic activity northeast of Big Cypress National Preserve and documentation of the impacts of their ,earlier work in the same area. �...� ************************************************************************ • NOTES: A. Notify the Natural Resources Management Department (774-8454) no later than 5 P.M. on Monday, May 16, 1988, if you cannot attend this meeting or if you will have conflict and thus will abstain from voting on a particular petition. B. Please refer to notice on first floor, Building F, for the location of the E.A.C. meeting. C.. Items added after agenda was sent out. D. No action since last Council meeting. E. On January 7, 1987 the E.A.C. adopted a policy that any person addressing the E.A.C. on behalf of any organization must present a letter from said organization acknowledging them as a representative empowered to make policy related comments on that subject. ********** ********** ********** ********** ********** ANY PERSON WHO DECIDES TO APPEAL A DECISION OF THIS BOARD WILL NEED TO RECORD OF THE PROCEEDINGS PERTAINING THERETO, AND THEREFORE MAY NEED TO ENSURE THAT A VERBATIM RECORD OF THE PROCEEDINGS IS MADE, WHICH RECORD INCLUDES THE TESTIMONY AND EVIDENCE UPON WHICH THE APPEAL IS TO BE BASED. ********** ********** ********** ********** ********** ************************************************************************ EAC Agenda Form J ENVIRONMENTAL ADVISORY COUNCIL MAY 18, 1988 ITEM: MINUTES OF MAY 4, 1988 APPROVED MOTION: Dr. Benedict moved, seconded by Ms. Kurgis and carried unanimously, that the minutes of May 4, 1988, be approved with the following corrections: 1. Page 7, second paragraph, extensive should be intensive. 2. Page 13, second line, word "permit" should be placed after "ST" . ***** PETITION NO. R-88-7C FILED BY/FOR: Alan D. Reynolds of Wilson, Miller, Barton, Soll & Peek, Inc. , representing Stefan P. Galazzi, owner and agent for owners; Joseph A. Galazzi , Earl G. Hodges, and Thelma T. Hodges. REQUESTING: A zoning change from RMF-6 to C-6 REPRESENTED BY: Mrs. Nora Peek of Wilson, Miller, Barton, Soll & n Peek, Inc . COMMENTS: Mrs. Peek stated that this property consists of two small parcels on North 10th Street behind Hodges Funeral Home. She stated that each por- tion is 9/10th of an acre and she is requesting a zoning change from RMF-6 to C-6 that is a new zoning district that will soon be implemented. She stated that she agrees with the staff report and stipulations. Mr . Cardillo asked what borders this property, to which Mrs. Peek stated that there is a Wags Restaurant and a commercial area. Dr. Edwards stated that both parcels have been disturbed in the past as evidenced by the pre- sence of Brazilian Pepper, adding that Block "B" parcel has been disturbed the greatest . He indi- cated that the only structure in either parcel is in the southern part of Block "B" which is a two story apartment building and it has several trees on site which is the seagrape, citrus, fig tree and two mahogany trees. He noted that Block "A" has the small low to medium quality scrub oak Page 2 ENVIRONMENTAL ADVISORY COUNCIL MAY 18 , 1988 area, several slash pines and the ground cover consists of palmetto and prickly pear cactus. He noted that there are several areas of open sand and the southern portion is basically an open graminoid area. He noted that staff recommends approval with the stipulations as contained in the staff report . In answer to Ms. Kurgis, Planner Nadeau stated that the C-6 district does not exist at the pre- sent time, but staff is in the process of writing an ordinance to amend the zoning ordinance for incorporation of this district . He stated that this petition was accepted for review purposes even though there is not standards at this time to review it by, adding that he does not have any concerns regarding this petition. He noted that an in-fill zoning is to place a commercial zone as an in-fill between a more intensive commercial zone and residential districts . MOTION: Made by Dr. Benedict to recommend approval of Petition R-88-7C, subject to the following sti- pulations. Seconded by Ms. Kurgis. Carried unanimously. STIPULATIONS• 1 . Petitioner shall be subject to Ordinance 75-21 (or the tree/vegetation removal ordinance in existence at the time of permitting) , requiring the acquisition of a tree removal per- mit prior to any land clearing. A site clearing plan shall be submitted to the Natural Resources Management Department for their review and sub- ject to approval prior to any work on the site. This plan may be submitted in phases to coincide with the development schedule. The site clearing plan shall clearly depict how the final site layout incorporates retained native vegetation to the maximum extent possible and how roads, buildings, lakes, parking lots, and other facili- ties have been oriented to accommodate this goal. 2 . Native species shall be utilized, where available, to the maximum extent possible in the site landscaping design. A landscaping plan will be submitted to the Natural Resources Management Department and the Community Development Division for their review and subject to their approval. Page 3 ENVIRONMENTAL ADVISORY COUNCIL MAY 18, 1988 This plan will depict the incorporation of native species and their mix with other species, if any. The goal of site landscaping shall be the recreation of native vegetation and habitat characteristics lost on the site during construc- tion or due to past activities. 3. All exotic plants, as defined in the County Code, shall be removed during each phase of construction from development areas, open space areas, and preserve areas. Following site deve- lopment, a maintenance program shall be imple- mented to prevent reinvasion of the site by such exotic species. This plan, which will describe control techniques and inspection intervals, shall be filed with and subject to approval by the Natural Resources Management Department and the Community Development Division. 4. If, during the course of site clearing, exca- vation, or other constructional activities, an archaeological or historical site, artifact, or other indicator is discovered, all development at that location shall be immediately stopped and the Natural Resources Management Department notified. Development will be suspended for a sufficient length of time to enable the Natural Resources Management Department or a designated consultant to assess the find and determine the proper course of action in regard to its salva- geability. The Natural Resources Management Department will respond to any such notification in a timely and efficient manner so as to provide only a minimal interruption to any constructional activities. 5. Petitioner shall, at the time of development in Block "A" , incorporate the scrub oaks into the landscape plan. If the scrub oaks lie in the development path, petitioner shall, where possible and practical, save them for transplant as landscape components on site. ***** PETITION NO. R-88-8C/PU-88-1OC FILED BY/FOR: David Evans and Robert Stowers Page 4 ENVIRONMENTAL ADVISORY COUNCIL MAY 18, 1988 REQUESTING: A zoning change from A-2 to RSF-4 for mixed single family cluster housing and a provisional use "g" of RSF-4 for cluster housing (duplex) . REPRESENTED BY: David Evans COMMENTS : Mr. Evans stated that he has read the staff report and has fully agree with the report and the stipulations. He stated that it is his intent to maintain the canopy as much as he can and keep as many trees as possible. He indicated that the property is located on the south side of Bailey Lane, 1/4 mile west of Airport Road. Ms. Stevens stated that the parcel supports a pine palmetto community with slash pines, adding that an open canopy allows for an understory of cabbage palms, strangler fig, hogplum, myrsine and wax myrtle. She stated that burn scars were noted on pines and remnant cypress stumps. She stated that there are several exotic species are found throughout the parcel . She noted that staff recommends approval subject to the stipula- tions in the staff report . Dr. Benedict questioned what kind of detention area it would be, to which Mr. Evans stated that there would be retention ponds, and the ponds will consist of 2 acres out of the total 9.6 acres. MOTION: Made by Ms. Kurgis to recommend approval of Petition R-88-8C/PU-88-10C subject to staff sti- pulations. Seconded by Dr. Benedict. Carried unanimously. STIPULATIONS: 1. Petitioner shall be subject to Ordinance 75-21 (or the tree/vegetation removal ordinance in existence at the time of permitting) , requiring the acquisition of a tree removal per- mit prior to any land clearing. A site clearing plan shall be submitted to the Natural Resources Management Department for their review and sub- ject to approval prior to any work on the site. This plan may be submitted in phases to coincide with the development schedule. The site clearing plan shall clearly depict how the final site Page 5 ENVIRONMENTAL ADVISORY COUNCIL MAY 18, 1988 layout incorporates retained native vegetation to the maximum extent possible and how roads, buildings, lakes, parking lots, and other facili- ties have been oriented to accommodate this goal. 2. Native species shall be utilized, where available, to the maximum extent possible in the site landscaping design. A landscaping plan will be submitted to the Natural Resources Management Department and the Community Development Division for their review and subject to their approval. This plan will depict the incorporation of native species and their mix with other species, if any. The goal of site landscaping shall be the re- creation of native vegetation and habitat charac- teristics lost on the site during construction or due to past activities. 3. All exotic plants, as defined in the County Code, shall be removed during each phase of construction from development areas, open space areas, and preserve areas. Following site deve- lopment, a maintenance program shall be imple- mented to prevent reinvasion of the site by such exotic species. This plan, which will describe control techniques and inspection intervals, shall be filed with and subject to approval by the Natural Resources Management Department and the Community Development Division. 4. If, during the course of site clearing, exca- vation, or other constructional activities, an archaeological or historical site, artifact, or other indicator is discovered, all development at that location shall be immediately stopped and the Natural Resources Management Department notified. Development will be suspended for a sufficient length of time to enable the Natural Resources Management Department or a designated consultant to assess the find and determine the proper course of action in regard to its salva- geability. The Natural Resources Management Department will respond to any such notification in a timely and efficient manner so as to provide only a minimal interruption to any constructional activities. 5. The site clearing plan for the residential community shall incorporate as much of the existing native habitat as feasible into the development. Page 6 ENVIRONMENTAL ADVISORY COUNCIL MAY 18, 1988 sssss ADDENDA COMMENTS: Dr. Benedict stated that there is a petition on the CCPC agenda for May 20, 1988, with regards to a 71 foot boat dock extension and questioned if staff has reviewed this, to which Planner Nadeau stated that this boat dock extension is con- sistent with other docks in the area, adding that this is on the southern tip of Keewaydin Island. He noted that the dock will probably accommodate a 44 foot boat and the depth of the water is about 3 to 4 feet . He noted that staff has no problems with it. Ms. Stevens indicated that she looked at the vegetation and the areas and gave her comments to Mr. Nadeau and she has no problem with it either. Dr . Proffitt stated that for information purposes only, the Sea Turtle Ordinance will be presented to the BCC next week and the Conservation and Coastal Management Element will be heard by the CCPC on May 19, 1988 . There being no further business, the meeting was adjourned by Order of the Chair - Time: 9: 10 A.M. ENVIRONMENTAL ADVISORY COUNCIL John P. Cardillo, Chairman Page 7 �� MEMORANDUM TO: Dr. Edward Proffitt Director, Natural Resources Management Department FROM: Andrea Stevens Natural Resources Technician DATE: May 25, 1988 RE: Petition PDA-88-4C: Thomas T. Crandall , of Collier County Utilities Division, representing Board of County Commissioners, Ex-Officio the Governing Board of Collier County Water-Sewer District; requesting a PUD Amendment to "Foxfire" PUD, Section VI , Tract D, Fire Station site. _________________________________________________________________ The petitioner is requesting an amendment to the Foxfire PUD by changing the use of the northeast corner of the property from a Fire Station to a Pump Station and Effluent Storage Tank site. Collier County acquired the 1 . 25 acre site (Section VI , Tract D, of Foxfire PUD) by eminent domain proceedings, and the proposed facilities will be included as part of the South County Regional Wastewater System project. /-*N Facilities and structures proposed for the site include a stormwater retention area, a 1 . 1 million gallon effluent storage tank, a wastewater pump station constructed below grade, a control building, a chainlink fence around the perimeter of the site, and a driveway from Radio Road. I have spoken with Mac Hatcher (ESPCD) regarding this PUD Amendment request, and he had two concerns with the petition: 1 . that a mechanism is provided to monitor storage tank levels to prevent overflow; 2. that adequate vegetative buffers are incorporated into the site planning to minimize noise levels. Craig Pager, of Hole, Montes, and Associates, an engineer for the project, has indicated that an altitude control valve and a computer system will provide the necessary emergency relief and monitoring requirements for the storage tank. Mr. Pager also mentioned that landscaping on the site will provide adequate noise buffers. The NRMD administratively approves petition PDA 88-4C, subject to the 4 Standard Stipulations (adopted by the EAC on 4/1/87) , and any relevant stipulations originally approved in the °~~� PUD document. cc: Thomas T. Crandall , Collier County Utilities Division t"—"N NATURAL RESOURCES MANAGEMENT DEPARTMENT STAFF REPORT FOR EAC MEETING 6/01 /88 Petition: PU-88-9C; Q. Grady Minor , representing Hubschman and Associates; requesting a provisional use (b ) of the A2 zoning for earth mining and related activities. Considerations: The area proposed for provisional use is a 141 acre, rhomboid-shaped parcel located north of U.S. Route 41 and west of State Route 951 . The parcel is bordered to the east by the Lely PUD project , to the south and southwest by U.S. Route 41 , to the west by A2 zoned land , to the northwest by Naples Manor , and to the north by PUD zoned land (R26E, T5OS, S33) (7.0 ' NGVD) . The /"'N site was first visited by Mr . Jim Burch (NRMD) in 1987 in regards to a notice of commencement for tree clearing as an agricultural exemption to Ordinance 75-21 . A second site visit , in regards to this petition, was conducted on 24 May 1988 by Mr . Keith Edwards (NRMD) . The parcel contains an existing 55 acre farm field , which was part of a larger , 123 acre field . The remaining 68 acres is situated in the PUD land to the east . The field has been cleared of vegetation in the past due to agricultural activity. The remaining 86 acres of the site is dominated by a slash pine (Pinus elliotti var , densa) and cajeput ( Melaleuca quinquenervia ) canopy. The cajeput is quite dense in areas, forming several /—"N monocultural stands. The understory is dominated by brazilian pepper (Schinus terebinthifolius) and wax myrtle (Myrica 1 Staff Report EAC Meeting 6/01 /88 Page 2 cerifera) . Scattered individuals of salt bush ( Baccharis halimifolia) and remnant bald cypress ( Taxodium distichum ) are part of the understory layer . Sedge and graminoid species are the dominant ground cover species, with scattered individuals of yellow-eyed grass (Xyris spp . ) , blechnum fern ( Blechnum serrulatum) , and dog fennel (Eupatorium capillifolium) . Several areas in the western portion of the site contain large patches of grape vine ( Vitis rotundifolia) . The large number of cajeput observed on site is indicative of past disturbance caused by the draining of the site by construction of farm ditches and drainage canals. Two small areas (0.41 and 0.49 acres, respectively) of /'\ denser cypress growth , and containing more hydrophytic vegetation than in the rest of the site, occur north of the existing farm field . Prior to issuance of the notice of commencement (NC-87- 229) for tree clearing , NRMD will survey the areas and , if the areas are deemed to be viable wetland areas, shall mark these areas prior to any clearing activity. These two areas would thus be preserved and could be incorporated into the water management plan for the site as dry retention areas. The irrigation pond and detention lake are located mostly within the existing farm field . The 5.4 acre detention lake, part of an 8.8 acre detention area, is located in the southeast corner of the site, entirely within the farm field . In order for a lake of this size to be constructed , it has been estimated that 98,243 cubic yards of material would have to be excavated 2 Staff Report EAC Meeting 6/01/88 Page 3 (numbers are derived from the surface water management report for the project by Howard L. Searcy, P.E. , February 1988) . South Florida Water Management District has stipulated that an area along the eastern border of the detention area be planted with native, littoral species as a mitigative procedure if the two cypress areas are cleared . Roughly three-quarters of the irrigation pond , located about 300 feet north of the detention area, would occur in the existing farm field . The remaining northern quarter would be located in an area of pine- melaleuca- graminoid vegetation, the vegetation type that comprises most of the vegetation on site. Construction of the pond would require the excavation of 95,254 cubic yards of material . The site is underlain by Arzell Fine Sand with small pockets of Immokalee Fine Sand . Recommendations: The area has been disturbed in the past due to draining of the area because of the construction of nearby agricultural ditches and drainage canals. The areas proposed for the detention lake and irrigation pond lie mostly within the cleared , existing farm field . The two , small cypress areas will be surveyed and , if deemed worthy , flagged and preserved prior to issuance of a notice of commencement for tree clearing . /""N 3 ` . r-~ Staff Report EAC Meeting 6/01/88 Page 4 Considering the above stated points, NRMD recommends approval of PU-88-9C with the following stipulations: 1 , 4. Standard stipulations 1 and 4, as adopted by EAC on 4/1/87. 5. The two cypress areas will be surveyed by NRMD, prior to issuance of a notice of commencement . If deemed preservable, the areas shall be preserved and incorporated into the water management system. If, however , NRMD allows the two areas to be cleared , petitioner shall mitigate for the loss of the areas by planting an equal sized area in the detention area . Native /"'"N littoral species shall be planted and a proper maintenance program ( removal of invading exotics) instituted . Prepared by: /F^�~ x�� /. Date: :5 A‘ /' �,?" Reviewed by:1�_ 2~� /71 )7Date: A7/42", / �•• 4 MEMORANDUM TO: EAC members FROM: Dr. Edward Proffitt Director, NRMD DATE: May 27, 1988 RE: EAC Agenda for June 1, 1988 The staff report for petition PDA-87-11C; requesting a PUD Amendment to Pelican Bay PUD, will be distributed on Tuesday, May 31, 1988. If you have any questions call 774-8454. EP/emw N1158 NATURAL RESOURCES MANAGEMENT DEPARTMENT ,••••••.- STAFF REPORT FOR THE ENVIRONMENTAL ADVISORY COUNCIL MEETING OF 01 June 1988 PETITION PDA-88-11C WESTINGHOUSE COMMUNITIES OF NAPLES, INC. REQUESTING AN AMMENDMENT TO THE PELICAN BAY PUD TO ALLOW NINE ADDITIONAL HOLES OF GOLF INTRODUCTION 1 . The PDA is a request to add nine additional holes of golf course in approved, but as yet unbuilt, residential areas. The additional golf acerage would not impact unique habitats such as the xeric live oak and turkey oak areas; nor would wetlands be affected. 2. In the Pelican Bay PUD and DRI processes, commitments for surface water quality monitoring were made. Therefore, a significant amount of data exist to address a question that the NRMD and EAC often have about golf course lakes, and water management lakes in general : Do the heavy applications of, fertilizer and pesticides used to keep golf courses looking manicured have adverse impacts on the lakes and ponds of the system. 3. The NRMD requested that Westinghouse have the existing water quality data compiled, analyzed, and summarized for their Environmental Impact Statement requirement. Westinghouse had Dr. Marty Roessler of Tropical Bioindustries analyze the data. His report is included as Attachment A, and his significant findings are presented below. The NRMD acknowledges the significant public service provided by Westinghouse in the presentation and analysis of these data. 4. PELICAN BAY WATER QUALITY SUMMARY A. Parameters monitored: Nutrients, pH, conductivity, temperature, dissolved oxygen (DO) , and biological oxygen demand (BOD) . Pesticides and metals were not monitored. B. Stations: See map Attachment B. 1 . Stations include: a. Golf course lakes b. a natural pond that is now part of the water management system ( IF-3) , although it has been significantly enlarged. c. other man-made lakes d. Berm stations ( inland side where seasonal Cat ,0•"%e, least] flooding occurs) e. Clam Bay estuarine stations. 1 C. Methods and NRMD Comment on Methods: 1 . The length of time that data were gathered, and the frequenty of collection, vary from station to station. Sampling is over several years and so the mathematical technique of "obtaining overall station means" confounds seasonal and annual variation, as well as the variation attributable to differences in lengths of time stations were sampled. In addition, tests of "significant difference" between stations is probably not very meaningful . However, the overall analyses are useful and provide insight to the question of water quality in Pelican Bay. 2. Probably a more significant mathematical manipulation of the data would be to compare water quality before and after construction of the golf course ( 1979) , various single and multi-family housing units, etc. This could not be done in the short time between NRMD request and the data analysis, however, Westinghouse has provided the summary of dates of when various phases of the development began and were completed. NRMD will use this information to provide the analysis alluded to, and will, report back to the EAC when this is completed. D. Significant Results Summary: 1 . Attachment C is a description of the stations provided by Mr . Petty of the PBID who conducts the actual sampling. 2. The following stations occasionally showed excess nutrients as indicated by the upper end of their ranges, and the by high SOD. The data are summarized from Figs. 2, 3, & 4 in Dr . Roessler ' s report. Station total phos. total N. SOD Lagoon very high very high high golf course, sewage effluent very high high high golf course lake DC-13 high high low swale at berm, seasonally inundated by water from Mgmt. System II . E high low moderate swale at driving range, seasonally flooded, Mgmt system III waters .0"•%, PB-13 moderate low moderate berm swale, seasonally flooded Mgmt sys III 2 ' ^ , ~ �.4ti NATURAL RESOURCES MANAGEMENT DEPARTMENT STAFF REPORT FOR EAC MEETING 6/01/88 petitigm: STD-88-12C; T. A. Herbert and Associates, as agents for Shell Western E & P, Inc. , requesting permission for about 40 miles of seismic lines through various wetlands in Collier County and in the Big Cypress Area of Critical State Concern. INTRODUCTION 1 . The petitioners are requesting to conduct seismic testing for oil along roughly 40 miles of seismic lines in Collier County. 2. The work (known as the G-89 program) is to be conducted along three seismic lines. These lines will act to "infill " the G-81 /~ program established under STD-87-2C. 3. The three seismic lines are to be located to the north- northeast of the Big Cypress National Preserve (BCNP) in the Area of Critical State Concern (portions of R32E-R34E, T49S-T51S) . Aerial photographs will be brought to the EAC meeting. Only one set was provided so, consequently, NRMD cannot provide the EAC members with their own copies of the aerials. 4. Shot point centers will be located approximately every 180 feet along each seismic line. Each center will consist of three shot holes, spaced thirty feet apart. 5. Since the work will be performed during the wet season, to prevent environmental degradation, it will be necessary for different vehicles and tactics to be employed than those used during the G-81 program. a) Petitioner has proposed to exclusively use a small drill mounted onto a Chikazu track vehicle. The complete set-up weighs approximately 1300 pounds and has a psi of 1 . 0-1 . 4. This set-up is most effective in soft soil conditions, where standing water reaches 18" , and where the space between trees is greater than four feet. 1 . "Chikazu tracked vehicle" is defined as a 500 pound /-"' | rubber tracked vehicle with dimensions of 42" x 100" . ^^ The size and maneuverability (maximum speed of 5 mph) of this vehicle allows its use in areas where trees are greater than four feet apart. 1 . . ' . /'''‘ Staff Report EAC Meeting 6/01/8B Page 2 2. "Small drill " is defined as a Geo-Rex portable drill , with a total weight of 800 pounds. The drill is capable of being dismantled into 5-10 pieces, weighing 100-1'00 pounds each, and hand- carried into highly sensitive areas. b) Petitioners propose that, for wet season work, the use of helicopters to ferry personnel and material into the work areas will be more extensively used than in previous work within the county. This method of transport will cause less environmental impact than the previously used transport methods. NRMD COMMENTS 1 . Staff concerns are two fold. a) Current petition for seismic testing with its potential for negative impacts. /-*N 1 . Destruction of vegetation and routing of wetland soils. This concern becomes more pronounced since the work is to be performed during the wet season when the chance for soil routing is increased. 2. Disruption of wildlife behavior patterns because of increased human activity, vehicle traffic, and blasting. Especially important is potential effects on protected species. b) The "larger picture" of cumulative impacts on the wetlands and other habitats, protected species, and of an obvious escalation of oil related activities in ecologically important wetlands. In addition, the area proposed for seismic testing is part of the boundary extension area for the BCNP. Serious questions must be raised in terms of the propriety of conducting testing in this area in light of the recent stoppage of testing within the present boundaries of the BCNP. 2. NRMD staff has reviewed the petition and 1 :24, 000 scale aerials provided, but has not had the opportunity to "ground truth" the 40 miles of lines in Collier County. 3. Petitioner has agreed to submit a County environmental /-*~ impact statement detailing the general effects of oil-related activities in the Area of Critical State Concern and the BCNP. The data gathered from these activities will aid in inventorying the biological resources of the area and help relate these 2 ' . . ' /"` Staff Report EAC Meeting 6/01/88 Page 3 resources to the geology of the region. NRMD ANALYSIS AND RECOMMENDATIONS 1 . The current petition is for about 40 miles of seismic lines. a) Chikazu- small drill assembly ( 1300 lb set-up) : 1 . The maximum psi (pounds per square inch) for the Chikazu- small drill assembly shall not exceed 2. 3. Since the work is to be performed during the wet season, it is imperative that great care be taken by the petitioner and personnel so not to cause extensive environmental degradation. 2. The Chikazu- small drill assembly is acceptable in wetland areas, especially marl marsh and small cypress habitats, if : a. the maximum psi does not exceed 2. 3. /~N. b. no more than two vehicle trips are made over any one stretch of trail . c. the maximum effects of this vehicle type shall not exceed the "light effects" as defined in Duever et al ( 1981 ) . d. if conditions a c cannot be met, NRMD recommends that the small drill be disassembled and carried in by hand. b) No new roads or trails shall be created in dense cypress areas (trees closer than four feet apart) . These areas will be penetrated exclusively by foot, with the small drill equipment carried in by hand, and/or via helicopter air lifts. c) Petitioner shall allow and arrange for periodic inspections of their work by NRMD staff . NRMD shall determine if the conditions of this permit are being met. If in the opinion of NRMD the conditions are not being met, then the ST development permit will be revoked. d) NRMD agrees with and accepts other stipulations as stated in the Department of Environmental Resources permit (#111257155) for work in the BCNP. 2. Cumulative impacts resulting from accelerated oil exploration ,'"'Nand extraction in the Big Cypress Preserve and Area of Critical State Concern. a) Staff recommends that the current ST petition be approved since Shell Western has agreed to conduct studies and produce 6 ' . ~ �� Staff Report EAC Meeting 6/01/88 Page 4 a scientifically quantitative Environmental Impact Statement (EIS) (as per Collier County Ordinance 77-66) prior to submitting any future ST petitions for exploration, extraction, roads, etc. in the ST areas of Collier County. This EIS shall , at a minimum, assess the Shell ST proposal (s) in light of its individual impacts and cumulative effects of all oil-related activities that have occurred in the Big Cypress (this may be accomplished by detailed analysis of several selected pads, roads, flow ways, etc. with subsequent extrapolation to other similar sites) . This shall include, but not necessarily be limited to: 1 . documenting the nature, rates and extent of recovery and ecological succession of vegetation on "reclaimed" oil pads and/or roads and swamp buggy trails abandoned by oil concerns; 2. documenting the cumulative effects of modified hydrological patterns, if any, produced by oil-related pads and roads; /"~N 3. documenting the cumulative effects of oil-related activities on protected plant and animal species; 4. documenting all known oil spills and their effects as well as the potential long-term cumulative effects if spills increase in frequency and/or magnitude; and 5. determine, as is best possible from the available information gathered in 1-4, the maximum amount of oil- related activity that the Big Cypress can absorb prior to significant deterioration in the natural successional patterns, species populations, and hydrology. b) Staff recommends that the EAC use the information generated in these Environmental Impact Statements to determine whether an upper threshold is necessary for the number of wells, miles of roads and trails, and acreage of production facilities that can be in existence and in operation at any one point in time. For example, once this threshold is met, then no new wells would be permitted until an existing one was taken out of service and the site restored. This would allow oil activities to continue while assuring no cumulative impact past an established threshold level . Informational workshops should be held to ./"" help in this determination. 4 ' , „ ~ �� Staff Report EAC Meeting 6/01/88 Page 5 Prepared by: /��c��L _��%^�� /��___ Date: __��__/ =� / �_��_ ~ Reviewed by: � � _/ �, Date: _ ________ �� . ` ,e- NATURAL RESOURCES MANAGEMENT DEPARTMENT (NRMD) STAFF REPORT FOR EAC MEETING 6/1/88 petitigp: PDA-88-5C; Alan D. Reynolds, AICP, of Wilson, Miller, Barton, Soil , and Peek, Inc. , representing Leisure Technology of Florida, Inc. ; requesting a PUD Amendment to Bretonne Park (R-86-12C/DRI-86 2C) . Co1215id�T. gOs: The subject property is a 333. 48 acre rectangular parcel located between Davis Boulevard and Radio Road, 0. 5 mile west of Santa Barbara Boulevard (S5, T50S, R26E) . The petitioner is requesting an amendment to the Bretonne Park PUD which would change the acreages of several of the land uses to allow for an .1--• 18-hole golf course. These acreage changes are summarized in Attachment A. The revised site plan includes the following amendments: 1 . The number of lakes has increased, although the lakes are smaller, so the total change in lake acreage is minimal ; 2. A decrease in residential acreage; 3. A decrease in upland park/open space area; 4. The addition of a maintenance/utility area in the southeast corner of the development. Brandt Henningsen (formerly of NRMD) prepared the original NRMD staff report for the Bretonne Park PUD (Attachment B) . Areas on site where land use changes are proposed as part of the petition under consideration (PDA-88-5C) were inspected on March /". 18, 1988 by Andrea Stevens (NRMD) , and representatives of the U. S. Army Corps of Engineers and the Southwest Florida Regional ^ �� Staff Report EAC Meeting 6/1/88 Page 2 Planning Council , accompanied by Kevin Erwin, Consulting Ecologist, Inc. NRMD has three primary concerns with the proposed PUD Amendment. The first concern is the effects of golf course runoff on nearby lakes. There is a potential for nutrient overloading in the small lake areas, which would create water and sediment quality problems. The second NRMD concern is the extent of tree clearing proposed for the golf course. It will be important for the petitioner to maintain as much of the native vegetation as /-N. feasible in the "rough" areas of the golf course, so that a ` habitat corridor can be maintained through the development. The third NRMD concern is the adequate buffering of the four designated wetland preserves. Buffers are particularly important around the wetland areas adjacent to the commercial tract and the maintenance/utility site near the southeastern boundary of the parcel . Recommendations: The NRMD recommends approval of petition PDA-88-5C subject to the following stipulations: 1-4. Standard Stipulations 1 4, as adopted by the EAC on 4/1/87. 5-13. Original stipulations 5-10 and 12-14 from the NRMD /-\ staff report for R-86-12C, as amended during the EAC meeting of February 4, 1987 (Attachment C) . , ^ �� Staff Report EAC Meeting 6/1/88 Page 3 Stipulation #10 in the staff report requires NRMD verification of wetland boundaries flagged by the petitioner. These boundaries shall include adequate buffer areas. 14. Existing native vegetation in the proposed "rough" areas of the golf course shall be conserved in place where feasible. 15. The petitioner shall be responsible for undertaking a water quality and sediment quality monitoring program, as specified in the May 25, 1988 letter to Kevin Erwin '�N (Attachment 0) . Prepared By �� r ' Date: ��27,�i� ____ / ' Reviewed By: /` / t- Date: -%-- 27 k_____ . ?"'s ATTACHMENT A: Land use changes proposed in the Bretonne Park PUD Amendment petition (PDA-88-5C) . R�86�12C PDA-88-5C streets 50. 48 21 . 20 residential sites 164. 05 138. 70 commercial 12. 48 11 . 50 lakes 37. 08 35. 00 upland park/open space 60. 02 48. 30 wetland preserve 10. 26 10. 30 maintenance/utility 0 4. 50 golf course 0 51 . 80 community center 0 12. 20 /-\ NATURAL RESOURCES MANAGEMENT DEPARTMENT ,••••••.- STAFF REPORT FOR THE ENVIRONMENTAL ADVISORY COUNCIL MEETING OF 01 June 1988 PETITION PDA-88-11C WESTINGHOUSE COMMUNITIES OF NAPLES, INC. REQUESTING AN AMMENDMENT TO THE PELICAN BAY PUD TO ALLOW NINE ADDITIONAL HOLES OF GOLF INTRODUCTION 1 . The PDA is a request to add nine additional holes of golf course in approved, but as yet unbuilt, residential areas. The additional golf acerage would not impact unique habitats such as the xeric live oak and turkey oak areas; nor would wetlands be affected. 2. In the Pelican Bay PUD and DRI processes, commitments for surface water quality monitoring were made. Therefore, a significant amount of data exist to address a question that the NRMD and EAC often have about golf course lakes, and water management lakes in general : Do the heavy applications of, fertilizer and pesticides used to keep golf courses looking manicured have adverse impacts on the lakes and ponds of the system. 3. The NRMD requested that Westinghouse have the existing water quality data compiled, analyzed, and summarized for their Environmental Impact Statement requirement. Westinghouse had Dr. Marty Roessler of Tropical Bioindustries analyze the data. His report is included as Attachment A, and his significant findings are presented below. The NRMD acknowledges the significant public service provided by Westinghouse in the presentation and analysis of these data. 4. PELICAN BAY WATER QUALITY SUMMARY A. Parameters monitored: Nutrients, pH, conductivity, temperature, dissolved oxygen (DO) , and biological oxygen demand (BOD) . Pesticides and metals were not monitored. B. Stations: See map Attachment B. 1 . Stations include: a. Golf course lakes b. a natural pond that is now part of the water management system ( IF-3) , although it has been significantly enlarged. c. other man-made lakes d. Berm stations ( inland side where seasonal Cat ,0•"%e, least] flooding occurs) e. Clam Bay estuarine stations. 1 C. Methods and NRMD Comment on Methods: 1 . The length of time that data were gathered, and the frequenty of collection, vary from station to station. Sampling is over several years and so the mathematical technique of "obtaining overall station means" confounds seasonal and annual variation, as well as the variation attributable to differences in lengths of time stations were sampled. In addition, tests of "significant difference" between stations is probably not very meaningful . However, the overall analyses are useful and provide insight to the question of water quality in Pelican Bay. 2. Probably a more significant mathematical manipulation of the data would be to compare water quality before and after construction of the golf course ( 1979) , various single and multi-family housing units, etc. This could not be done in the short time between NRMD request and the data analysis, however, Westinghouse has provided the summary of dates of when various phases of the development began and were completed. NRMD will use this information to provide the analysis alluded to, and will, report back to the EAC when this is completed. D. Significant Results Summary: 1 . Attachment C is a description of the stations provided by Mr . Petty of the PBID who conducts the actual sampling. 2. The following stations occasionally showed excess nutrients as indicated by the upper end of their ranges, and the by high SOD. The data are summarized from Figs. 2, 3, & 4 in Dr . Roessler ' s report. Station total phos. total N. SOD Lagoon very high very high high golf course, sewage effluent very high high high golf course lake DC-13 high high low swale at berm, seasonally inundated by water from Mgmt. System II . E high low moderate swale at driving range, seasonally flooded, Mgmt system III waters .0"•%, PB-13 moderate low moderate berm swale, seasonally flooded Mgmt sys III 2 F moderate high high berm swale, seas. flooded Mgmt sys III A moderate mod/low mod/high lake, northern golf PH-11 moderate low low seasonal swale, by berm, housing runoff Mgmt sys I TS-5 moderate moderate high brackish lake, near Ritz Carlton Mgmt sys V & VI Other stations showed generally good ranges of values. 3. Inspection of graphical analysis presented by Westinghouse (not in Dr. Roessler ' s report) for possible trends of increasing values over time. total phos. tot. N pH lagoon yes unclear no O yes yes yes DC-13 Not provided E no no unclear A no to unclear unclear yes (maybe 87-88) (maybe since 85) B no yes yes PH-11 no yes unclear TS-5 no unclear (maybe) yes IF-3 no yes unclear ESTUARINE STATIONS DS-9 no yes (maybe) no TS-7 no yes no TS-8 no yes maybe (unclear) 3 E. Conclusions: 1 . Dr. Roessler: a. Some increases in nutrient loading in the golf course lakes (especially 6) . b. Since BOD and nutrient concentrations do not correlate, the operation of the golf course has not significantly changed the normal patterns c. The golf course and retention lakes are protecting Clam Bay estuarine system from runoff. 2. NRMD additional conclusion: a. Some evidence exists for trends of increasing nitrogen, phosphorus, and even pH in certain freshwater stations. b. More importantly, there is some evidence for increased nitrogen in estuarine stations. It is not known if the additional nitrogen ( if it indeed exists) is coming from the Pelican Bay drainage system or not. However, the system deserves further monitoring to ensure the continued viability of the estuarine ecosystem. 3. NRMD technical report 87-2 (Clam Bay benthos and seagrass) found: a. Outer Clam Bay (near DS-9) has considerable seagrass (Haldoule wriqhtii ) in the summer months. b. The benthic infaunal community is surprisingly depauperate relative to Johnson Bay (similar sediment and grass habitat) , and to west coast seagrass/sand estuaries in general . It is not known if this is a natural condition, or was an atypical year , or if some other factor influenced the benthos. c. Wading birds and fish abound in the bay. RECOMMENDATIONS The NRMD recommends approval of the petition with the following stipulations: 1 - 4 Standard EAC stipulations 5. Clearing in the rough areas of the golf course will be held to the minimum amount practical to retain as much native habitat as possible. 6. Water quality monitoring will continue. However, staff recommends that Westinghouse and PBID explore with the regulatory agencies the possibility of dropping certain autocorrelated parameters (and maybe adding some pesticide or metal monitoring) . PREPARED BY: DATE: _) &744, REVIEWED BY: DATE: 4 �Tlac`1N/ei 4 Analysis of Pelican Bay Improvement District WATER QUALITY DATA by Martin A. Roessler Tropical Biolndustries, Inc. 9869 East Fern Street Miami , FL 33157 May 5, 1988 After a meeting with Walter Carter of Westinghouse Community of Naples and John Petty of the Pelican Bay Improvement District, I was supplied with a hard copy of data on water quality at 15 stations in the Pelican Bay Improvement District. Additionally, graphic analyses of each parameter plotted against time for each station and graphs of the minimum, maximum, average, median, and standard deviation of each parameter and station were provided together with a map of the collecting stations. The hard data was converted to IBM compatible disk storage with a scanning digitizer. Particular difficulty was encountered because one's (1) were sometimes read as l 's and exclamation points ( ! ) , but universal search and replacement routine ' s cleansed the data. Additional problems were encountered with fives and sixes and rarely with sixes and eights. This required thorough proofreading of all the data sets. The data sets were noted to be incomplete with blanks representing missing observations. The data was edited to supply a character (?) which served to reserve a space in the statistical routines and avoided interpretation as an observation of zero units. Correlation coefficients were computed using the Matrix Calculating Engine (MACE) , a statistical package copyrighted by (MACE) Inc. , Madison, Wisconsin. The methods used are: Correlation and Regression The coefficient of correlation between any two variables, j and k, is computed as the following sum: [xij - meanj/ ( (nj - 1) * stddevj)1/2] * [xik - meank/ ((nk - 1) * stddevk)1/2] where xij represents the ith observation in variable j and xik represents the ith observation in variable k 2 meant• and meank represent the means of variables j and k stddevj and stddevk represent the standard deviations of variables j and k The sum is computed over i = 1 to n j = nk pairs of observations; nj and nk represent, respectively, the number of observations in variable j for which there is a corresponding observation in variable k. The matrix of correlation coefficients is the standardized variance-covariance matrix needed by regression procedures. The least squares estimates are obtained directly by evaluating the well known matrix equation. b = (x'x)-1x'y The inverse is calculated using the Bauer-Reinsch modification of the Gauss-Jordan method. This algorithm performs an in situ inversion of a positive definite symmetric matrix. See Algorithm 9 in J. C. Nash, Compact Numerical Methods for Computers: Linear Algebra and Function Minimisation, John Wiley & Sons, New York, 1979. The 'pairwise option was used to maximize the use of the data set despite the large number of missing data. If further interpretation or predictions are attempted this option should be seriously examined because of bias it might introduce to the multiple correlation coefficients or regression slopes and intercepts.- The simple correlation coefficients among the stations for each of the variables was calculated allowing comparisons of the degree of relatedness in the pattern and magnitude of changes in parameters such as temperature, pH, conductivity, nutrients, dissolved oxygen, and biochemical oxygen demand. Additionally, simple correlation coefficients among the parameters for observations at all stations were computed to indicate sets of parameters which exhibited similar trends in concentration and pattern. 3 A priori knowledge of chemistry and ecology, coupled with the examination of the summary data for the period November 1981-February 1988 supplied by the Pelican Bay Improvement District would lead one to suspect the Lagoon would have high nutrients, high B.O.D. and low D.O. It might also be expected and indeed does exhibit far greater variance in most parameters. The Pelican Bay stations DS9, TS8, and TS7 are influenced by Gulf of Mexico water on flood tides and runoff on ebb tide especially in the rainy season. Thus conductivity and total dissolved solids have higher average concentration and higher variances than the more- upland development and golf course ponds. The "interceptor/bay hammock" stations DC13, F, PB13 and TS5 tend to have higher mean values and greater variances, but only TS5 is significantly higher than the upland stations. Apparently they are occasionally influenced by the estuarine waters of the Clam Bay system on extreme tides or storm events but are quickly flushed by upland runoff. Station PB11 , which tends to fall within the group of interceptor/bay-head stations based on conductivity, exhibited a high conductivity (37,000 micromhos/cm) in November 1981 and much lower values at all other times . It more appropriately should be considered fresh water in nature (see Figure 1). The mean temperature varies from 23.5 to 25.5 with no apparent cause except for the occurrence of missing observations in the data set and differences in depth of stations. The mean pH varied from a minimum of 6.8 to a maximum of 8.0. The Clam Bay stations are slightly more basic and better buffered due to the Gulf of Mexico influence (see Table 1 for a summary of the mean values of temperature, pH, TDS and nutrients). Several species of the nutrients nitrogen and phosphorus were measured. Orthophosphate (that fraction believed most available to plant nutrition) appears to contribute the greatest percentage to the total phosphate pool . Total phosphate concentrations were greatest { • 4 • LAG ("'• - --- -- - O S -- - --- - -- - X58 I1 11 - • r G P fi - - - . PB 13 a CoNDuc j IU1 I y Figure 1. Conductivity (micromhos/cm) at stations in the Pelican Bay community, Naples , Florida. (Horizontal line equals range; vertical line equals mean; hollow box represents 1 standard deviation above and below mean; solid box represents 2 standard errors of the mean above and below the mean [approximately the 95 percent confidence interval]). { 5 M N O ct N Lt) •••I t0 .--4 O r"I d' O t0 tn • • . N I-- ct N. O N cos-4 CV CO LC) CO 40 CO N O hD 4.0 O O '. • • to CO M 1.0 O d N LC) Cr ct O co N C) O M I.') Li M t0 -- .y N CO Lf) N .4- O N CO CO U) .--I • • r• LV) U p') N. - co O CD N _ F-- O r•+ .4- -0 O r..I N G .-i N. G LY) 0 N) • . . r..l ft) LL .-r N N _ 4) N. N ct O C'') N. C .-4 N 4.0 N _ O .-i _ 0-4% t0 O CO CU r-I I.. Co^_ 4-) N N. a \ C O C)1 Ln N� .. O LV E Ln O N t0 r- O 4-4 • • ct. •• CO N N. i••� d Q) In 0. d r••• I••- r- opQf v 'O L \ VD N L N O r-I O E •C') E r-a E Cr) ,..) '.0 W N 0 CV Z 4) • V) t0 s- • co Its LA = N. ' v �"� Z IO .� F- N 0. O d t0 N F¢- d b CO ct *C ct . O N to a. > O S.. r. N E to O L N L O I N C t0• .O0 O• O N r- ' O N O Z Z O Z •r- U) CO .-.1 O r-I LLL) L G 1.0 4- • ^ • O • r-• L0 O CO ct t0 ns 10 N i4 4) O t0 Co p t0 ni-N. to f'- M N. O t0 > N N. Ln 1.0 ¢ C co a) LC) N 01 CO E N. C71 0 O G G CC) rr-.I 4- I— c- N. N. r` O N N a s. (C CO N CO .--I .--I LC) E Co U) CO G G O •:/- O M F- N N N. .4' N LC) N CO N •-I C) al C)1 O C) G O Cr) C) C) V) . • ..i O ct CO Ch • N CO r-I a) N v O •— Ct (.0 t0 O •--i N LC) .4- .0 CSS . • r-I O N b Q LC) N. .-i .y • 0 .••••••••. F- J N N .--I . I i 6 in the Lagoon (LAG) and least in Clam Bay stations. Mean values in — golf course lakes A, B and E are similar to upland stations PB10, PB11, and IF3. Golf course lake G and upland lake DC13 show higher concentrations and more variability. The interceptor/bayhead stations seem normal to slightly high (see Figure 2) . The 1 relationship between mean total phosphorus concentration and variance indicates the distribution is not statistically normal , implying the use of parametric statistics without data transformation can lead to erroneous conclusions. The graphic analysis does strongly imply that occasional spikes in total phosphorus do occur (these may or may not be associated with fertilization or rainfall events) , but the phosphorus appears to be consumed or precipitated in situ and does not reach the Clam Bay system in excessive quantities. Nitrite contributes to the total nitrogen pool only at stations LAG and G. At all other stations it is found in quantities near the Ilower detection limit . Nitrate occurs in elevated mean concentrations (1.62 mg/1 ) at LAG, and varies from 0. 13 to .45 mg/1 — at all other freshwater stations. The Clam Bay stations only have 0.05-0.08 mg/1 . Ammonia follows a similar pattern , with a mean concentration of 1. 10 mg/1 at LAG and a range of 0.10-0.37 in freshwater stations and 0.08-0.09 mg/1 in Clam Bay. The Kjeldahl nitrogen (organic + nitrite + nitrate) shows similar patterns. The graph of total nitrogen (see Figure 3) indicates high concentrations and variance at the Lagoon, similar low concentrations (0.76-1.04 mg/1 ) at freshwater stations , somewhat higher values in the interceptor/bayhead stations (up to 1.62 mg/1 ) , and very low concentrations (0.39-0.50 mg/1 ) in Clam Bay. The biochemical oxygen demand, the total use of oxygen by bacteria, plants and animals should be related to ratio of photosynthesis to respiration, the availability of living and dead organic matter; availability of essential nutrients; relation between surface area and volume; and vertical mixing to supply dissolved oxygen from the atmosphere to meet the demand. • LA G- • r DS 9 -_ __ TS 8 . rti____L----- ,, TS All . A . .l 1 B - Htif7:-------"--&—"-- E 11 , Pb 10 • ;,'cam [3 11 . Bfr. l't-73 - __,_____ Pb I ' . o .5 /.0 —1.5 To 1-P L__. P H(.)S Y H•14 1 E (r'9 /-Q 1 Figure 2. Total phosphate (mg/1 ) at stations in the Pelican Bay community, Naples, Florida. For legend see Figure 1. 8 'w:.s., =sirY. ; .L4G V s EilEf-- ------43 ` illiEl-----' rs8 - - __ Fir rs i - 1111111...).. ..). — H fi - 4EAEF--- B 'EA:]] , E . - _ )4l - G _ _ , EIEF---- -- PB10 _ { 0 } PO � 1 - ____ilF__ . IF5 - � `� RiDC (3 - �y s • g"F;J 1, 1111111111r:-7f.4iil 7-- PB ( 3 - � . rS5 - r /f--. • ) y s G •4 To rft L N11 1-(< C1 Gest ,..� i. Figure 3. Total nitrogen (mg/l ) at stations in the Pelican Bay community, Naples, Florida. For legend see Figure 1. 9 The data (Figure 4) indicate a relatively high B.O.D. (5.2 mg/1 ) in — ,; the lagoon, somewhat elevated B.O.D. in the golf course ponds (1.9- 1 3.9 mg/1 ) over values (1.0-2.0) in the development lakes and higher (2.1-3.9 mg/1 ) values in the interceptor/bayhead and Clam Bay stations. Examination of the dissolved oxygen (Figure 5) data in contrast to the B.O.D. indicates only the interceptor/bayhead lakes have low (2.7-3.8 mg/1 ) mean concentrations. Thus it appears that while the golf course receives nutrients and has high B.O.D. the demand is met by photosynthesis and mixing in the shallow ponds coupled with maintenance to remove vegetation. The B.O.D. in the Clam Bay system does not stem from nutrient-induced plant growth but rather from detritus and respiration. Sufficient oxygen is supplied from tidal and density-induced mixing to maintain a healthy system. The interceptor/bayhead received nutrients, exhibits elevated B.O.D. and low dissolved oxygen. The nutrients and dead organic matter which was from the uplands into this sytem are assimilated by bacteria, marsh and swamp plants and the runoff through the mangroves into the Clam Bay system is altered to usable carbon and detritus food sources which do not overload the estuary. The interceptor waterway appears to function as proposed. In the following simple pairwise correlation coefficient data: 1. Station A Golf Course 2. Station B Golf Course 3. Station LAG Lagoon (sewage) 4. Station PB10 Development lake 5. Station G Golf Course 6. Station TS8 Clam Bay 7. Station TS7 Clam Bay 8. Station TS5 Bay head pond (mangrove) 9. Station PB13 Interceptor/bayhead 10. Station PB11 Development lake 11. Station IF3 Development lake 12. Station F Interceptor/bayhead 13. Station E Golf Course 14. Station DS9 Clam Bay 15. Station DC13 Interceptor/bayhead 10 L r1 G W :., . :, 9 H .ro• • ;, 1 1-72 8 -, �- -111 tLip I ;Ili yot: • '" j . - Ir�N-1i FF .1'1 ,'.1; '1I $ - I' !; I I $ . • , I F 3 DC 13 4dil -- - - PE 13 - ,.r i -- — T 5 c l - --.�..Y.__. .. 1 / O S /0 /s w02 130D Figure 4. Biochemical oxygen demand (B.O.D. ) (mg/1 ) in the Pelican Bay community, Naples, Florida. For leoend see Figure 1. • 11 L14G I , 0 1 D5 5 - - TS8 1 . 7S -7 . t,Gbti.� B -1.,-. . , - F-0-1 - E 0 -- G - . PI PB Io • , N iF 3 ;-4:-!ti D C 3 . :f3 I PB , :.,2i:.4.;: I C s • 0 5 /0 /5 u, Q • ,,,,7,./-i Figure 5. Dissolved oxygen (D.O. ) (mg/i ) in the Pelican Bay community, Naples , Florida. For legend see Figure 1. 12 Thus the comparison - row 1, column 1 - is the simple correlation coefficient of the concentration of a parameter at station A against itself. Row 2, column 1 compares station A and B -- row 15, column 14 compares DC13 with DS9 and row 15, column 15 compares DC 13 with itself. With 30-50 replicates, a correlation coefficient of 0.25-0.3 or higher is significant in a single comparison . Multiple comparisons, of course , are not valid and reduce the level of confidence requiring an r of .80 or .90 to indicate significance. Tables 2 through 14 provide the results of the analyses. As indicated by the comparison of the summary statistics (mean , variance, etc. ) and the expected seasonal dynamics, the temperature is strongly correlated at all stations . Seasonal effects are represented in all of the stations at about the same rate. The pH appears similar at all stations except the Lagoon station, which exhibits trends opposite from the other stations, but not significantly so. Similarities in conductivity and total dissolved solids are confounded by different sources of solutes and processes which concentrate or dilute them. Although few stations cluster together, the overlap indicates a rather loose association of all stations, except DS9 (separate in the conductivity analysis) and IF3 (separate in the total dissolved solids analysis) . Isolation and hypersalinity at DS9 and isolation and low solutes at IF3 cause seasonal patterns which are atypical . The golf course lakes fall within the seasonal patterns shown by other stations. Analysis of means and variances show the concentration of solutes to be low. The dissolved oxygen concentrations at all stations are related to one another, although the Lagoon, golf course stations B and E, and interceptor/bayhead station PB13 are less closely affiliated with the j common patterns shown elsewhere. The Lagoon and interceptor/bayhead (PB 13) are negatively related when considered alone. 13 Table 2. Temperature -- CORRELATION MATRIX ROW COL VALUE 1 1 1.0000 10 7 0.7979 14 12 0.7805 2 1 0.9791 10 8 0.7465 14 13 0.8801 2 2 1.0000 10 9 0.9329 14 14 1.0000 , 3 1 0.8285 10 10 1.0000 15 1 0.7645 3 2 0.8310 11 1 0.8120 15 2 0.7629 3 3 1.0000 11 2 0.8261 15 3 0.9314 4 1 0.8254 11 3 0.9440 15 4 0.9086 4 2 0.8399 11 4 0.9592 15 5 0.7899 4 3 0.9547 11 5 0.8036 15 6 0.7925 4 4 1.0000 11 6 0.8180 15 7 - 0.8131 5 1 0.9605 11 7 0.8367 15 8 0.7824 5 2 0.9727 11 8 0.8356 15 9 0.9489 5 3 0.8167 11 9 0.8995 15 10 0.9525 5 4 0.8259 11 10 0.9377 15 1I 0.9290 5 5 1.0000 11 11 1.0000 15 12 0.9074 6 1 0.9152 12 1 0.8083 15 13 0.7983 6 2 0.9283 12 2 0.7787 15 14 0.8215 6 3 0.8263 12 3 -0.8883 15 15 1.0000 6 4 0.8158 12 4 0.8937 6 5 0.9382 12 5 0.7943 6 6 1.0000 12 6 0.7512 "` - 7 1 0.9249 12 7 0.7672 7 2 0.9395 12 8 0.7677 7 3 0.8385 12 9 0.8966 7 4 0.8284 12 10 0.9073 7 5 0.9451 12 11 0.9230 7 6 0.9711 12 12 1.0000 7 7 1.0000 13 1 0.9596 8 1 0.9078 13 2 0.9767 8 2 0.9182 13 3 0.8179 8 3 0.8288 13 4 0.8514 8 4 0.8192 13 5 0.9685 8 5 0.9380 13 6 0.8922 8 6 0.9291 13 7 0.8970 8 7 0.9191 13 8 0.8820 8 8 1.0000 13 9 0.7154 9 1 0.7067 13 10 0.7995 9 2 0.6987 13 11 0.8223 9 3 0.8766 13 12 0.7879 9 4 0.8341 13 13 1.0000 9 5 0.6944 14 1 0.9052 9 6 0.7492 14 2 0.9244 9 7 0.7500 14 3 0.8314 9 8 0.6778 14 4 0.8202 9 9 1.0000 14 5 0.9366 10 1 0.7808 14 6 0.9599 10 2 0.7834 14 7 0.9727 10 3 0.8908 14 8 0.9177 10 4 0.9184 14 9 0.7234 10 5 0.7586 14 10 0.7813 10 6 0.7816 14 11 0.8180 14 Table 3. pH CORRELATION MATRIX ROW COL VALUE 1 1 1.0000 10 7 0.2749 14 12 0.1325 2 1 0.6115 10 8 0.3404 14 13 0.3838 2 2 1.0000 10 9 0.5479 14 14 1.0000 3 1 0.2081 10 10 1.0000 15 1 0.3763 3 2 -0.1879 11 1 0.2004 15 2 0.3022 3 3 1.0000 11 2 0.1782 15 3 -0.0073 4 1 0.4034 11 3 0.2175 15 4 0.2624 4 2 0.5993 11 4 0.1483 15 5 0.0393 4 3 -0.1548 11 5 0.0860 15 6 0.3082 4 4 1.0000 11 6 0.3196 - 15 7 0.0395 5 1 0.3997 11 7 0.3506 15 8 ` 0.1510 5 2 0.6593 11 8 0.1402 15 9 0.2445 5 3 -0.1417 11 9 0.2543 15 10 0.4530 5 4 0.5203 11. 10 0.3736 15 11- 0.1192 5 5 1.0000 11 11 1.0000. 15 12 0. 1559 6 1 0.4896 12 1 0.1131 15 13 0.0658 6 2 0.5901 12 2 0.4878 15 14 0.0303 6 3 0.1635 12 3 -0.1763 15 15 1.0000 6 4 0.3339 12 4 0.4571 6 5 0.5283 12 5 0.5681 6 6 1.0000 12 6 0.4202 7 1 0.4972 12 7 0.4300 • 7 2 0.5289 12 8 0.5527 7 3 0.2000 12 9 0.5596 7 4 0.3004 12 10 0.4498 7 5 0.4842 12 11 0.3520 7 6 0.7130 12 12 1.0000 7 7 1.0000 13 1 0.2488 8 1 0.4800 13 2 0.5928 8 2 0.6162 13 3 -0.2598 8 3 -0.1348 13 4 0.6191 8 4 0.3521 13 5 0.5131 8 5 0.7203 13 6 0.2875 8 6 0.5834 13 7 0.2481 8 7 0.4531 13 8 0.4146 8 8 1.0000 13 9 0.4010 9 1 0.2409 13 10 0.4874 9 2 0.5216 13 11 -0.1524 9 3 -0. 1630 13 12 0.3209 9 4 0.5134 13 13 1.0000 9 5 0.3389 14 1 0. 1233 9 6 0.3688 14 2 0.1936 9 7 0.2280 14 3 0.1005 9 8 0.3369 14 4 0.1332 9 9 1.0000 14 5 0.4546 10 1 0.5345 14 6 0.4324 10 2 0.5911 14 7 0.5318 14 8 0.3466 10 3 0.0451 10 4 0.7556 14 9 0.0093 10 5 0.4967 14 10 0.1372 10 6 0.3868 14 11 0.1391 15 Table 4. Conductivity -- CORRELATION MATRIX ROW COL VALUE _ 1 1 1.0000 10 7 0. 1404 14 12 -0. 1007 2 1 0.5278 10 8 0.0064 14 13 0.0202 2 2 1.0000 10 9 0.0447 14 14 1.0000 3 1 0.0939 10 10 1.0000 15 1 -0. 1950 , 3 2 0.0393 11 1 0.0021 15 2 -0.0696 3 3 1.0000 11 2 0.1300 15 3 0.2390 4 1 0.0359 11 3 0.3632 15 4 -0.0062 4 2 0.0246 11 4 0.3938 15 5 0.2827 4 3 0.0722 11 5 0.2260 15 6 0.1155 4 4 1.0000 11 6 0.2219 15 7 0. 1082 5 1 0. 1345 11 7 0.3474 15 8 - 0.0355 5 2 0.2768 11 8 0.0506 15 9 0.8295 5 3 0.2705 11 9 0.2704 15 10 -0.0751 5 4 0.3437 11 10 0.4346 15 11 0.2591 5 5 1.0000 11 11 1.0000 15 12 0.0810 6 1 0.1529 12 1 0.2740 15 13 - 0.0688 6 2 0. 1976 12 2 0.0944 15 14 0.0231 6 3 -0. 1256 12 3 0.0758 15 15 1.0000 6 4 0.2550 12 4 - 0. 1127 6 5 0.4301 12 5 0. 1130 . 6 6 1.0000 . 12 6 0.2041 7 1 0.0934 12 7 0. 1682 7 2 0.2552 12 8 ' 0. 1294 7 3 0.0619 12 9 0. 1907 7 4 0.2245 12 10 0. 1968 7 5 0.3459 12 11 0. 1815 7 6 0.6362 12 12 1.0000 7 7 1.0000 13 1 0.0424 8 1 0.0928 13 2 0.5498 8 2 0.0451 13 3 0.1544 _ __ _ 8 3 0.2930 13 4 0. 1775 8 4 0.0781 13 5 0.5271 8 5 0.2579 13 6 0.3511 8 6 0.2087 13 7 0.2971 8 7 -0. 1840 13 8 0.2728 8 8 1.0000 13 9 0. 1534 9 1 0.0141 13 10 -0.0638 9 2 0.0339 13 11 0.2374 9 3 0.3190 13 12 -0.0252 9 4 0.1932 13 13 1.0000 9 5 0.4991 14 1 0.0500 9 6 0.2464 14 2 0.0880 9 7 0.2742 14 3 -0. 1217 9 8 0.2302 14 4 -0.0252 9 9 1.0000 14 5 0.0869 10 1 0.0399 14 6 0.2218 10 2 -0.0440 14 7 0.4014 10 3 0.0177 14 8 -0.5872 10 4 -0.0642 14 9 -0.0996 10 5 -0.0436 14 10 0.0751 10 6 0. 1800 14 11 0.0187 16 Table 5. Total Dissolved Solids. CORRELATION MATRIX ROW COL VALUE 1 1 1.0000 10 7 0.3413 14 12 -0.0895 2 1 0.5490 10 8 0.0070 14 13 0.0432 2 2 1.0000 10 9 0.0291 14 14 1.0000 3 1 -0.1726 10 10 1.0000 15 1 -0.2597 3 2 -0.0156 11 1 -0.0033 15 2 0.1666 3 3 1.0000 11 2 -0.0253 15 3 0.2391 4 1 0. 1080 11 3 0.2457 15 4 -0.0499 4 2 0. 1822 11 4 0. 1496 15 5 0.2131 4 3 0.0674 11 5 -0.0615 15 6 0.0145 4 4 1.0000 11 6 -0.2628 15 7 -0.0239 5 1 0.0480 11 7 -0. 1661 15 8 0.0384 5 2 0.4009 11 8 -0.2154 15 9 - 0.0347 5 3 0.3983 11 9 -0.0819 15 10 -0. 1426 5 4 0.4339 11 10 0.0919 15 11 0. 1354 5 5 1.0000 11 11 1.0000 15 12 - 0.0142 6 1 0.3481 12 1 0.2953 15 13 0. 1577 6 2 0.3884 12 2 0.2904 15 14 -0.0769 6 3 -0.1408 12 3 0. 1004 15 15 1.0000 6 4 0.1558 12 4 .0.1059 6 5 0.4526 12 5 0.1782 6 6 1.0000 12 6 0. 1945 7 1 0.1277 12 7 0.0394 - • - 7 2 0.1935 12 8 0. 1152 7 3 -0.0748 12 9 0. 1558 7 4 0.1364 12 10 0.1620 7 5 0.0985 12 11 0.2908 7 6 0.6150 12 12 1.0000 7 7 1.0000 13 1 0. 1461 8 1 0. 1207 13 2 0.5858 8 2 0.2352 13 3 0.1055 8 3 0.2668 13 4 0. 1714 8 4 0.0253 13 5 0.4836 8 5 0.2547 13 6 0.3875 8 6 0.2700 13 7 0.2294 8 7 -0. 1462 13 8 0. 1260 8 8 1.0000 13 9 0. 1924 9 1 0.0292 13 10 -0. 1411 9 2 0.1900 13 11 0.0655 9 3 0.3189 13 12 0.2444 9 4 0. 1833 13 13 1.0000 9 5 0.6846 14 1 -0.1273 9 6 0.3090 14 2 -0.2858 9 7 -0.0691 14 3 -0.0674 9 8 0.2258 14 4 -0.0402 9 9 1.0000 14 5 -0.0355 10 1 0.0050 14 6 0. 1100 10 2 -0.0547 14 7 0.2996 _ 10 3 0.0107 14 8 -0.5738 10 4 -0.0595 14 9 -0.0199 10 5 -0.0538 14 10 0. 1263 10 6 0.2220 14 11 -0.0316 17 Table 6. Dissolved Oxygen. ,_.a CORRELATION MATRIX ROW COL VALUE _ _ 1 1 1.0000 10 7 0.3757 14 12 0. 1277 _ 2 1 0.5502 10 8 0.2875 14 13 0.1075 2 2 1.0000 10 9 0.3441 14 14 1.0000 3 1 0.1289 10 10 1.0000 15 1 0.0774 3 2 -0.0070 11 1 0.2896 15 2 0.0602 , 3 3 1.0000 11 2 0.1925 15 3 -0.3316 4 1 0.5146 11 3 0.1882 15 4 - 0.2161 4 2 0.2721 11 4 0.5889 15 5 -0.2203 4 3 -0.0155 11 5 -0.0424 15 6 0.3452 4 4 1.0000 11 6 0.3020 15 7 0.2308 5 1 0.5374 11 7 0.3852 15 8 0.3371 5 2 0.3624 11 8 0.2931 15 90.2705 5 3 0.2923 11 9 0.0193 15 10 _ 0. 1564 5 4 0.1162 11 10 0.4801 15 11 0.2299 5 5 1.0000 11 11 1.0000 15 12 0.2495 6 1 0.2339 12 1 0.0804 _ 15 13 0.2483 6 2 0.0510 12 2 -0.0437 15 14 0.1392 6 3 0.0504 12 3 0.0276 15 15 1.0000 6 4 0.3273 12 4 0.3484 6 5 0.0696 12 5 0.0535 6 6 1.0000 12 6 0.2409 7. 1 0.3155 12 . 7 0.3064 7 2 0.2221 12 8 0.2550 '-, 7 3 -0.0053 12 9 0.6218 • 7 4 0.3717 12 10 0.3147 7 5 0.1802 12 11 0.2922 7 6 0.7863 12 12 1.0000 7 7 1.0000 13 1 0.5477 8 1 0.2944 13 2 0.2109 8 2 0.0817 13 3 -0.1635 8 3 -0.1122 13 4 0.2425 8 4 0.4246 13 5 0.2787 8 5 0.1300 13 6 0.1845 8 6 0.4118 13 7 0.2076 8 7 0.4389 13 8 0.1958 8 8 1.0000 13 9 0.0712 9 1 -0.1259 13 10 0.1740 9 2 -0.1699 13 11 -0.0129 9 3 0.2921 13 12 0.0641 9 4 0.0981 13 13 1.0000 9 5 -0.0388 14 1 0.3372 9 6 0.4280 14 2 0.1857 9 7 0.3664 14 3 -0.0514 9 8 0.0548 14 4 0.2720 9 9 1.0000 14 5 0.3677 10 1 0.2890 14 6 0.5521 10 2 0.0364 14 7 0.7140 10 3 0.0342 14 8 0.1945 0-, 10 4 0.5225 14 9 -0.0252 10 5 0.0243 14 10 0.0895 10 6 0.3564 14 11 0.2424 18 Table 7. Biochemical Oxygen Demand CORRELATION MATRIX ROW COL VALUE 1 1 1.0000 10 7 0. 1805 14 12 -0.0432 -- - 2 1 0.3097 10 8 0.3431 14 13 0.6684 2 2 1.0000 10 9 0.2435 14 14 1.0000 3 1 0.0677 10 10 1.0000 15 1 -0.0561 3 2 0.0408 11 1 0.3851 15 2 0.0879 , 3 3 1.0000 11 2 0.2200 15 3 0.2645 4 1 0.4817 11 3 0.5087 15 4 0.0512 4 2 0.1605 11 4 0.4810 15 5 0. 1745 4 3 0. 1968 11 5 0.4019 15 6 -0.0520 4 4 1.0000 11 6 0.1761 15 7 -0. 1031 5 1 0.4554 11 7 0. 1497 15 8 0.0766 5 2 0.3735 11 8 0.3710 15 9 - 0. 1969 5 3 0.3648 11 9 0. 1854 15 10 0. 1429 5 4 0.2639 11 10 0.5098 15 11 0. 1458 5 5 1.0000 11 11 1.0000 15 12 0. 1098 6 1 0.4863 12 1 0. 1813 15 13 -0. 1555 6 2 0.4852 12 2 0. 1320 15 14 -0.0494 6 3 0.2064 12 3 -0. 1033 15 15 1.0000 6 4 0. 1739 12 4 0.3513 6 5 0.6283 12 5 . 0.0609 6 6 1.0000 12 6. 0.0977 7 1 0.4212 .12 7 0.0715 7 2 0.5676 12 8 0. 1092 - " 7 3 0.2131 12 9 -0.0367 ' 7 4 0.0968 12 10 0.0615 7 5 0.5634 12 11 0.0647 7 6 0.7678 12 12 1.0000 7 7 1.0000 13 1 0.6025 8 1 0.3776 13 2 0.5489 8 2 0. 1818 13 3 0. 1630 8 3 0. 1040 13 4 0.4003 8 4 0.2462 13 5 0.6155 8 5 0.4871 13 6 0.7662 8 6 0.4648 13 7 0.7757 8 7 0.2836 13 8 0.2899 8 8 1.0000 13 9 -0.0655 9 1 -0.0423 13 10 0.3085 9 2 -0.0878 13 11 0.1991 9 3 0.1177 13 12 0. 1165 9 4 -0.0313 13 13 1.0000 9 5 0. 1826 14 1 0.4531 9 6 0.0574 14 2 0.4195 9 7 -0.0511 14 3 0.3500 9 8 0.2903 14 4 0. 1649 9 9 1.0000 14 5 0.6077 10 1 0.1706 14 6 0.7114 10 2 0. 1280 14 7 0.6928 10 3 0.5274 14 8 0.3478 _ 10 4 0.3013 14 9 0.0675 10 5 0.3757 14 10 0.4480 10 6 0.3534 14 11 0.3672 Table 8. Total Phosphates. 19 CORRELATION MATRIX ROW COL VALUE -=_ 1 1 1.0000 10 7 0.1198 14 12 -0. 1481 2 1 0.0648 10 8 0.2384 14 13 -0.0220 2 2 1.0000 10 9 0.0185 14 14 1.0000 3 1 0.1267 10 10 1.0000 15 1 -0.0885 , 3 2 0.0285 11 1 -0.3382 15 2 -0. 1491 3 3 1.0000 11 2 0.1462 15 3 0.3219 4 1 -0.1416 11 3 -0.3335 15 4 -0. 1162 4 2 0.3618 11 4 0.4589 15 5 0.6289 4 3 -0.2202 11 5 -0.2673 15 6 0.0762 4 4 1.0000 11 6 0.2958 15 7 -0.0488 5 1 -0.1763 11 7 0.2453 15 8 - -0.0992 5 2 -0.0970 11 8 0.5825 15 9 0.2804 5 3 0.2842 11 9 0.0236 15 10 0.1615 5 4 -0.1368 11. 10 0.2892 15 11 -0. 1161 5 5 1.0000 11 11 1.0000 15 12 0.0210 6 1 -0.1369 12 1 -0.0191 15 13 -0.0648 6 2 0.0632 12 2 0.2715 15 14 0.1364 6 3 -0.2672 12 3 . 0.1827 15 15 1.0000 6 4 0.2208 12 4 0.0815 6 5 0.0234 12 5 -0.2265 6 6 1.0000 12 6 -0.1348 7 1 0.0943 . 12 7 0.0879 7 2 0.1981 12 8 0.0087 7 3 -0.3708 12 9 0.3058 7 4 0.2123 12 10 -0.0228 7 5 0.1412 12 11 -0.0199 7 6 0.5186 12 12 1.0000 7 7 1.0000 13 1 0.1102 8 1 -0.1122 13 2 0. 1950 8 2 0.0482 13 3 -0.2378 8 3 -0.2874 13 -0.1464 8 4 0.4334 13 5 -0. 1632 8 5 -0.1072 13 6 -0.0213 8 6 0.1799 13 7 -0.0207 8 7 0.1952 13 8 -0.0015 8 8 1.0000 13 9 0.0826 9 1 -0.0823 13 10 -0. 1727 9 2 0.2254 13 11 -0.0349 9 3 -0.0185 13 12 0.0392 9 4 -0.0566 13 13 1.0000 9 5 0.2360 14 1 -0.0880 9 6 -0.0532 14 2 0.1369 9 7 -0.0235 14 3 -0.2653 9 8 0.0233 14 4 0.2457 9 9 1.0000 14 5 0.3475 10 1 -0.1509 14 6 0.4435 10 2 -0.0017 14 7 0.7950 10 3 -0.1090 14 8 0.2986 10 4 0.3645 14 9 -0.0409 10 5 0.0326 14 10 0.1981 10 6 0.2774 _ 14 11 0.2585 Table 9. Orthophosphates. 20 CORRELATION MATRIX ROW COL VALUE 1 1 1.0000 10 7 -0.0194 14 12 -0.1258 2 1 -0.0017 10 8 -0.0531 14 13 -0.0922 -=_ 2 2 1.0000 10 9 0.0223 14 14 1.0000 3 1 0.2309 10 10 1.0000 15 1 -0.0292 3 2 0.0793 11 1 -0.0193 15 2 -0. 1319 3 3 1.0000 11 2 -0.0803 15 3 0.4160 , 4 1 0.0218 11 3 -0.0444 15 4 -0.0745 4 2 0.2787 11 4 -0.0290 15 5 - 0.6181 4 3 -0.0060 11 5 -0.0580 15 6 0.0182 4 4 1.0000 11 6 -0.0171 15 7 0.0500 5 1 -0.0943 11 7 0.0301 15 8 -0.0629 5 2 -0.1491 11 8 0.4910 15 9 0.2768 5 3 0.2255 11 9 -0.0851 15 10 0.2606 5 4 -0.1197 11 10 -0.0420 15 11 `-0.0195 5 5 1.0000 11 11 1.0000 15 12 0.0748 6 1 -0.1521 12 1 0.0839 15 13 0.0190 6 2 0.2936 12 2 0.4822 15 14 0.2708 6 3 -0.2434 12 3 0.2318 15 15 1.0000 6 4 0.2072 12 4 0.1095 6 5 0.2938 12 5 -0.0988 6 6 1.0000 12 6 -0.1447 7 1 -0.1117 12 7 -0.0878 7 • 2 -0.0164 12 8 0.0073 7. 3 -0.1688 12 9 0.4992 7 4 -0.0438 12 10 -0.0246 7 5 0.2991 12 11 -0.0243 7 6 0.8175 12 12 1.0000 7 7 1.0000 13 1 0.5210 8 1 -0.0369 13 2 0.2986 8 2 -0.0570 13 3 -0.0873 8 3 -0.2587 13 4 -0.1087 8 4 -0.0600 13 5 a -0.1207 _ _ 8 5 0.0111 13 6 -0.1214 8 6 0.1290 13 7 -0.1220 8 7 0.1410 13 8 -0.1579 8 8 1.0000 13 9 0.0609 9 1 -0.1225 13 10 -0.0986 9 2 0.1442 13 11 -0.0871 9 3 0.0391 13 12 0.5128 9 4 -0.0759 13 13 1.0000 9 5 0.1701 14 1 -0.0996 9 6 -0.0910 14 2 -0.0540 9 7 -0.0860 14 3 -0.0312 9 8 -0. 1152 14 4 -0.0580 9 9 1.0000 14 5 0.4832 10 1 -0. 1246 14 6 0.7763 10 2 0.0264 14 7 0.8511 10 3 -0.0186 14 8 0.0330 10 4 0.0531 14 9 -0.0468 10 5 0.1018 14 10 0.2748 10 6 0.1361 14 11 0.0357 21 Table 10. Total Nitrogen. CORRELATION MATRIX ROW COL VALUE 1 1 1.0000 10 7 0.2373 14 12 -0. 1779 2 1 0.7767 10 8 0.0872 14 13 0.0580 2 2 1.0000 10 9 0.5675 14 14 1.0000 3 1 0.0638 10 10 1.0000 15 1 0. 1050 3 2 0.1559 11 1 0. 1751 15 2 0.0815 3 3 1.0000 11 2 0. 1571 15 3 0. 1012 4 1 0.3217 11 3 0.1961 15 4 0.2353 4 2 0.3659 11 4 0.5461 15 5 0.0792 4 3 0.2792 11 5 0.1693 15 6 0.2411 4 4 1.0000 11 6 0.0921 15 7 " 0.5818 5 1 0.6688 11 7 0.3245 15 8 ` 0.3146 5 2 0.6662 11 8 0.3206 15 9 0.4344 5 3 0.3468 11 9 0.6790 15 10 0.3190 5 4 0.4308 11 10 0.5758 15 11 0.2202 5 5 1.0000 11 11 1.0000 15 12 0.2453 6 1 0.2136 12 1 0. 1372 15 13 -0.0324 6 2 0.3604 12 2 0. 1127 15 14 0.0988 6 3 -0.0818 12 3 . 0. 1714 15 15 1.0000 6 4 0.0354 12 4. 0.4137 6 5 0.3030 . 12 5 0.1604 6. 6 1.0000 12 6 -0. 1511 " 7 1 0.5132 12 7 -0.0183 7 2 0.5350 12 8 -0.0109 7 3 0.0473 12 9 0.5762 7 4 0.2121 12 10 0.3141 7 5 0.5952 12 11 0.3231 7 6 0.6413 12 12 1.0000 7 7 1.0000 13 1 0.5849 8 1 0.6562 13 2 0.4657 8 2 0.6753 13 3 0.0903 8 3 0.0084 13 4 0.1388 8 4 0.2531 13 5 0.2757 8 5 0.6979 13 6 -0.0237 8 6 0.5638 13 7 0.0785 8 7 0.8523 13 8 0. 1696 8 8 1.0000 13 9 0.0611 9 1 0.3460 13 10 0.0958 9 2 0.2961 13 11 -0.0294 9 3 0.2265 13 12 0.0204 9 4 0.5687 13 13 1.0000 9 5 0.3564 14 1 0.3146 9 6 -0.1153 14 2 0.5347 9 7 0. 1743 14 3 0.0557 9 8 0.0746 14 4 0.2269 9 9 1.0000 14 5 0.2912 10 1 0.0931 14 6 0.4531 10 2 0.1321 14 7 0.4398 10 3 0.4242 14 8 0.4470 10 4 0.6106 14 9 0.2127 10 5 0.2497 14 10 0.1417 10 6 0.0151 14 11 0.2082 22 Table 11. Kjeldahl Nitrogen. CORRELATION MATRIX ROW COL VALUE 1 1 1.0000 10 7 0.2488 14 12 -0.2082 2 1 0.8129 10 8 -0.0294 14 13 0.4758 2 2 1.0000 10 9 0.4275 14 14 1.0000 3 1 -0.0078 10 10 1.0000 15 1 0.4209 3 2 0.0041 11 1 0.1661 15 2 0.0721 3 3 1.0000 11 2 0.0578 15 3 0. 1461 4 1 0.2101 11 3 0.2702 15 4 0.2600 4 2 0.2507 11 4 0.3646 15 5 0. 1073 4 3 0.1846 11 5 0. 1248 15 6 0. 1097 4 4 1.0000 11 6 0.0488 15 7 0.5619 5 1 0.6234 11 7 0.2421 15 8 _ - 0.2762 5 2 0.6428 11 8 0. 1610 15 9 0.5696 5 3 0.2760 11 9 0.5881 15 10 0.3579 5 4 0.2503 11 10 0.4850 15 11 0.3622 5 5 1.0000 11 11 1.0000 15 12 0.3033 6 1 0.5412 12 1 -0.0127 15 13 0.0493 6 2 0.5993 12 2 -0.0868 15 14 0.0566 6 3 0.0005 12 3 0.1843 15 15 1.0000 6 4 0.0333 12 4 0.4643 6 5 0.4580 12 5 0.0615 - . 6 6 1.0000 12 6 -0. 1643 -- 7 1 0.7362 12 7 -0.0581 7 2 0.6465 12 8 -0. 1326 7 3 0.0706 12 9 0.6119 7 4 0.1745 12 10 0.3570 7 5 0.6772 12 11 0.3389 7 6 0.7599 12 12 1.0000 7 7 1.0000 13 1 0.6913 8 1 0.6619 13 2 0.7224 8 2 0.7200 13 3 0. 1722 8 3 -0.0274 13 4 0. 1751 8 4 0. 1045 13 5 0.4777 8 5 0.4986 13 6 0.4067 8 6 0.7377 13 7 0.3826 8 7 0.7207 13 8 0.5959 8 8 1.0000 13 9 -0.0745 9 1 0. 1206 13 10 -0.0004 9 2 -0.0363 13 11 -0.0042 9 3 0.2821 13 12 -0. 1521 9 4 0.3981 13 13 1.0000 9 5 0.0556 14 1 0.4882 9 6 -0.2017 14 2 0.5948 9 7 0.0157 14 3 -0.0475 9 8 -0.1348 14 4 0.0469 9 9 1.0000 14 5 0.2931 10 1 0.0750 14 6 0.5820 10 2 -0.0027 14 7 0.4630 10 3 0.4381 14 8 0.4638 10 4 0.4486 14 9 -0.0015 10 5 0.1183 14 10 0.0116 10 6 0.0937 14 11 -0.0034 23 Table 12. Ammonia. CORRELATION MATRIX ROW COL VALUE 1 1 1.0000 10 7 0.3826 14 12 -0.0842 2 1 0.6439 10 8 0.2687 14 13 0.5490 2 2 1.0000 10 9 0.7137 14 14 1.0000 3 1 -0.1552 10 10 1.0000 15 1 0.6405 3 2 -0.0945 11 1 0.5059 15 2 0.5133 3 3 1.0000 11 2 0.4826 15 3 0.0641 4 1 0.4514 11 3 -0.0130 15 4 0.4206 4 2 0.3985 11 4 0.4525 15 5 0. 1062 4 3 0.0143 11 5 -0.0969 15 6 0.5883 4 4 1.0000 11 6 0.5514 15 7 0.7107 5 1 0.0929 11 7 0.6336 15 8 0.4435 5 2 0.2001 11 8 0.4732 15 9 0.7684 5 3 0.0892 11 9 0.5344 15 10 0.6436 5 4 -0.0189 11 10 0.7643 15 11 0.6920 5 5 1.0000 11 11 1.0000 15 12 0.4227 6 1 0.6806 12 1 0.0738 15 13 0.4085 6 2 0.7319 12 2 -0.0671 15 14 0.6000 6 3 -0.0862 12 3 -0. 1335 15 15 1.0000 6 4 0.3986 12 4 0'. 1200 6 5 0.3459 12 5 -0. 1425 . 6 6 1.0000 12 6 -0.0704 _ 7 1 0.7669 12 7 0.0200 7 2 0.7855 12 8 -0.0744 7 3 -0.0943 12 9 0.4661 7 4 0.4841 12 10 0.3751 7 5 0.1953 12 11 0.3496 7 6 0.8367 12 12 1.0000 7 7 1.0000 13 1 0.6866 8 1 0.8309 13 2 0.6531 8 2 0.5982 13 3 -0.0981 8 3 -0. 1390 13 4 0.4761 8 4 0.2464 13 5 0.2805 8 5 -0.0211 13 6 0.6694 8 6 0.6809 13 7 0.6064 8 7 0.6515 13 8 0.5986 8 8 1.0000 13 9 -0.0234 9 1 0.2182 13 10 0.0773 9 2 0.2483 13 11 0.3109 9 3 0.0351 13 12 -0. 1570 9 4 0.2904 13 13 1.0000 9 5 -0. 1334 14 1 0.6671 9 6 0.2013 14 2 0.6753 9 7 0.2605 14 3 -0.2173 9 8 0. 1431 14 4 0.3681 9 9 1.0000 14 5 0.0331 10 1 0.3090 14 6 0.7040 10 2 0.2367 14 7 0.7399 10 3 0.0616 14 8 0.6288 10 4 0.4347 14 9 0. 1647 10 5 -0.1477 14 10 0.2355 10 6 0.3034 14 11 0.5350 24 Table 13. Nitrites. CORRELATION MATRIX ROW COL VALUE - _ _ 1 1 1.0000 10 7 0.3093 14 12 -0. 1783 2 1 0.4070 10 8 0.3024 14 13 -0.3280 2 2 1.0000 10 9 -0.0800 14 14 1.0000 3 1 0.3632 10 10 1.0000 15 1 0.0731 3 2 0.1463 11 1 -0.0629 15 2 0.1872 3 3 1.0000 11 2 -0.0459 15 3 -0.0120 4 1 -0.0836 11 3 -0.1064 15 4 -0.0333 4 2 -0.0418 11 4 -0.0016 15 5 -0.0540 4 3 -0.0567 11 5 0.7465 15 6 0.1367 4 4 1.0000 11 6 0.1779 15 7 0. 1327 5 1 0.0228 11 7 0.1758 15 8 0. 1455 5 2 -0.0047 11 8 0.1824 15 9 . ' 0.2527 5 3 0.0592 11 9 -0.0225 15 10 0.0098 5 4 0.0404 11 10 0.0626 15 11 -0.0215 5 5 1.0000 11 11 1.0000- 15 12 0.2389 6 1 -0.3573 12 1 0.6190 15 13 0.1485 6 2 -0.0900 12 2 0.7907 15 14 0.1289 6 3 -0.2126 12 3 0.3507 15 15 1.0000 6 4 0.1733 12 4 -0.0537 6 5 0.2022 12 5 '0.0228 6 6 1.0000 12 6 -0.1744 7 1 -0.3591 12 7 -0.1764 7 2 -0.0854 12 8 -0.1744 7 3 -0.2192 12 9 0.9793 7 4 0.1702 12 10 -0.1382 7 5 0.1961 12 11 -0.0495 7 6 1.0000 12 12 1.0000 7 7 1.0000 13 1 0.7618 8 1 -0.3553 13 2 0.5494 8 2 -0.0838 13 3 0.3125 8 3 -0.2124 13 4 -0.0722 - 8 4 0.1801 13 5 -0.0001 8 5 0.2039 13 6 -0.3280 8 6 1.0000 13 7 -0.3280 8 7 1.0000 13 8 -0.3387 8 8 1.0000 13 9 0.8620 9 1 0.5573 13 10 -0.1490 9 2 0.7908 13 11 -0.0691 9 3 0.2769 13 12 0.9060 9 4 -0.0192 13 13 1.0000 9 5 0.0315 14 1 -0.3610 9 6 -0.0309 14 2 -0.0861 9 7 -0.0309 14 3 -0.1855 9 8 -0.0377 14 4 0.1734 9 9 1.0000 14 5 0.2152 10 1 -0.2667 14 6 1.0000 10 2 -0. 1261 14 7 1.0000 10 3 -0.2047 14 8 1.0000 10 4 0.1546 14 9 -0.0320 10 5 0.0837 14 10 0.3114 10 6 0.3071 14 11 0.1738 25 Table 14. Nitrates. CORRELATION MATRIX ROW COL VALUE 1 1 1.0000 10 7 0.5735 14 12 0.0028 -_- 2 1 0.5713 10 8 0.5395 14 13 -0.0525 2 2 1.0000 10 9 0.7471 14 14 1.0000 3 1 0.2359 10 10 1.0000 15 1 -0.0232 3 2 0.3515 11 1 0. 1490 15 2 0.0901 N 3 3 1.0000 11 2 0.5015 15 3 0.2202 4 1 0.2670 11 3 0.0042 15 4 0.0913 4 2 0.6619 11 4 0.7559 15 5 0.0197 4 3 0.2027 11 5 0.0792 15 6 0.4122 4 4 1.0000 11 6 0.2372 15 7 0. 1026 5 1 0.5000 11 7 0.4564 15 8 0.0530 5 2 0.5669 11 8 0.6041 15 9 _ 0. 1920 5 3 0.2226 11 9 0.6653 15 10 _ 0.0962 5 4 0.2496 11 10 0.7684 15 11 0.0267 5 5 1.0000 11 11 1.0000 15 12 0.3444 6 1 -0.0721 12 1 0.4759 15 13 0.0242 6 2 0.0655 12 2 0.4222 15 14 0.0454 6 3 0.0433 12 3 0.1151 15 15 1.0000 6 4 0.1105 12 4 0.2615 6 5 -0.0860 12 5 0.3328 6 6 1.0000 12 6 -0.0496 . 7 1 0.2139 12 7 0.3817 - - 7 2 0.3199 12 8 •0.2620 7 3 -0.0943 12 9 0.6180 . 7 4 0.4575 12 10 0.3356 7 5 0.0092 12 11 0.2306 7 6 0. 1226 12 12 1.0000 7 7 1.0000 13 1 0.8788 8 1 0. 1203 13 2 0.6419 8 2 0.4681 13 3 0.3058 8 3 -0.1783 13 4 0.0842 8 4 0.5133 13 5 0.5121 8 5 0.3045 13 6 -0.0948 8 6 0.0806 13 7 0. 1137 8 7 0.2132 13 8 -0.0368 8 8 1.0000 13 9 0.4593 9 1 0.4619 13 10 0.0697 9 2 0.6994 13 11 -0.0521 9 3 0.0884 13 12 0.5935 9 4 0.6914 13 13 1.0000 9 5 0.5592 14 1 0. 1532 9 6 0.0960 14 2 0.3119 9 7 0.6799 14 3 0.2354 9 8 0.5561 14 4 0.4507 9 9 1.0000 14 5 0. 1141 10 1 0.2642 14 6 0.0868 10 2 0.7083 14 7 0.4380 10 3 0.2235 14 8 0. 1437 10 4 0.9080 14 9 0.3914 10 5 0.2285 14 10 0.4808 10 6 0. 1068 14 11 0.4238 26 — The concentration of biochemical oxygen demand (6.O.D. ) is strongly correlated at all stations. The interceptor/bayhead station (PB 13) and the development lake station F have the least affinity for others in the group. P613 is only similar to the Lagoon, while F is only directly related to another development lake (PB10). , 'Total phosphate concentration in the Lagoon is higher than at other stations and generally this station shows a negative relation to other stations. The golf course stations do not cluster. Station E appears unique. Station A also shows no similarity to other stations_ butbehaves in opposition to development lake IF3. Station G receives considerable phosphate and appears similar to the Lagoon. Golf course station B appears similar to other development, bayhead and estuarine stations. The relation between mean and variance (heterogeneity) , abundance of observations with low values (skewedness) and frequency of missing values confound interpretation. However, while it appears that phosphate sometimes occurs in high — quantities , the D.O. discussed above does not appear to be artificially depressed. Orthophosphate is weakly intercorrelated. The low concentrations, sporadic occurrence and frequency of observations at the limit of detection hinder interpretation. The golf course lakes tend to be similar to one another and to estuarine stations. They are also related to interceptor/bayhead development lake stations and the Lagoon. Station G has somewhat higher concentrations but similar patterns to other stations. PB10 forms an isolated case. The development lakes also tend to cluster and to have low even distributions of orthophosphate. Total nitrogen shows a great deal of similarity over the entire project. All stations are similar. Kjeldahl nitrogen, the principal contributor to the total nitrogen , also shows complete interrelationships. Ammonia concentrations are also highly inter- correlated , however the Lagoon behaves differently, as expected. 27 Station G also is only indirectly related to other stations through its correlation with estuarine station TS8 and golf course station E. Nitrite concentrations are uniformly low (level of detection) at the Clam Bay stations DS9, TS7, TS8, and the bayhead/mangrove station TS5. They show similarity with development lake PB11. Golf course lake G and development lake IF show similar patterns but different means. Development lake PB10 is low and unique in pattern. all of the other stations form a cluster with similar affinities and dissimilarity from the Clam Bay stations. Nitrates generally show a great deal of intercorrelation. The Lagoon is different from most other stations but the wide variety of patterns will interrelate it. Clam Pass station TS8 shows affiliation with the interceptor/bayhead station PB13 east of it. All other stations are related in a large cluster. Finally, Table 15 represents the simple correlation coefficients among each of the 13 physico-chemical water quality parameters. Each parameter was measured at 15 stations over a 68 month period. Thus there is the potential of 1020 replicate measures on the sets of 13 parameters. Missing data in any pair of parameters reduces the true replicates to approximately 750. A simple correlation coefficient of 0.1 between two items with 750 replicates would be significant at the 5 percent level and for the multiple sets of 13, the 5 percent level of significance would be approximately r = 0.25. In the following matrix of correlation coefficients the order of parameters is as follows: 1. Temperature (°C) 2. pH 3. Total dissolved solids (TDS) - mg/1 4. Conductivity - micromhos/cm 5. Dissolved oxygen - mg/1 6. Biochemical oxygen demand (BOD) - mg/1 28 7. Nitrite - mg/1 8. Nitrate - mg/1 9. Ammonia - mg/1 10. Kjeldahl nitrogen - mg/1 11. Total nitrogen - mg/1 12. Orthophosphate - mg/1 13. Total phosphate - mg/1 References to row and column in the correlation matrix (Table 15) indicate the parameters as identified above. - The summary Table 15 indicates TDS and conductivity are virtually identical in patterns. The nitrogen species are highly correlated with one another and with phosphates. The ortho and total phosphorus are virtually identical . The negative correlation between nutrients and total dissolved solids (conductivity) reflects the consistently low nutrients found in the Clam Bay system. 29 Table 15. Pelican Bay Water Quality Data. _ - - CORRELATlUN wATRIX ROW COL VALUE _ 10 1 0.0200 1 1 1 .0000 10 2 -0.0265 2 1 -0.4016 10 3 -0. 1518 ~ 2 2 1 .0000 10 4 -0. 1523 3 1 0.0334 10 5 -0.0834 0256 3 2 -0.0580 10 6 0,025o 3 3 1 .0000 10 7 - 0.0038 4 1 0 . 0272 10 8 0.3411 4 2 -0 ,0677 10 ^ 9 0.611.4 4 3 0. 9844 10 10 1 .0000 - 1 4 4 1 .0000 1 1 -0.0167 ~ 5 1 -0.0490 11 2 -0.0129 5 2 -(:.).0873 '11 T ' -0.2736 . 5 3 0. 1747 11 4 .': 70.2760 ., 5 4 0. 1691. - 11 5 ` '��0.0363 ' 5 5 1 ,000� 11 6 0.0��9 6 1 -0.0322 11 7 0. 1389 6 2 ' 0. 1612 11 . . 8 0'6885 6 3 -0 .O398 ^ _ '� l9 0. 5431 ' 6 4 -0,04'5: ' ' 11 10 6. 7063 . '`- 6 5 -0.0463 11 11 1 .6000 ' e*~-• 6 6 1 .0000 12^ 1. -0.0060 1 7 -0.0764 12 2 -0.0211 . 7 2 0. 017� 12 3 -0. 1390 / 3 -0.0823 12 4 -0. 1437 - 7 4 -0.0831 12 5 0.0851 7 5 0.0108 12 6 0.0049 7 6 -0.0144 12 7 0. 1449 7 7 1 .0000 _ 12 8 0. 5055 8 1 -0.082,!:: 12 9 0.4405 8 2 0 .0,.-192 12 10 0.4431 8 3 -0. 1953 12 lJ 0. 5476 8 4 -0.2005 12 1:2 1 .0000 8 5 0. 1205 13 1 -0. 0085 8 6 0.0003 1.3 2 -0.0186 8 7 0.2200 13 3 -0, 1613 8 8 1 .0000 13 4 0, 1655 9 1 -0.0355 13 5 0.0868 9 2 -0.0234 13 6 0.0066 9 3 -0.0968 13 7 0. 1626 9 4 -0.0975 13 8 0. 5176 9 5 -0.0441 13 9 0.4378 9 6 -0.0070 13 10 0.4471 9 7 0'0136 13 11 0. 5636 9 8 0. 2392 t3 {2 0.9773 9 9 1 .0000 13 13 1 .0000 (^~~ 30 Conclusions The examination of means and variances for the 13 water quality elements indicate some increase in nutrient loading and B.O.D. in the golf course lakes, especially at G. However, assimilation in these lakes and the interceptor/bayhead buffer zone has maintained 1 excellent quality in the Clam Bay system. Examination of the simple correlation coefficients for the chemical parameters generally show the patterns (mostly seasonal ) are similar in shape and direction. The Lagoon (LAG) and station G show indications of close affinity which may indicate close observation of lake G is necessary. The conductivity and total dissolved solids show a more confused picture which reflects the different sources of solutes to different water bodies. Runoff, tides And storm events coupled with evapotranspiration cause differing responses in estuarine stations, upland lakes and isolated ponds inland of the mangrove but subject to occasional salt water influence and subsequent evaporation. Low concentrations of nutrients in many stations indicate nearly identical patterns, especially in the Clam Bay system. This results from real concentrations being below detectable limits. The analysis of the relationships among variables confirms TDS and conductivity are equivalent. They also demonstrate strong affiliation among the various species of nitrogen with an implication that TKN (Kjeldahl ) can serve as an indicator of all of the other nitrogen monitoring. The close correlation of ortho and total phosphate also indicates one measure (ortho) would adequately describe events being monitored. The lack of correlation between BOD and nutrients and between D.O. and nutrients indicates the fertilizing and golf course operation has air 4 31 not significantly changed the normal patterns nor rates of change of these variables. In conclusion , the golf course and development retention lakes, coupled with the interceptor waterway, are protecting the Clam Bay system and further expansion of similar design is expected to function in the same manner assuring good water quality. • ---r"` A#a Gh m e n ._�- .— ---- .1I ti t t \I itt it 1 ik 1V.5\ till .1J:t 1 _ --_ __- .-iii0.\ 4 „ii, ,,,,,,_ a .. � ti • • ,ro . \A41"'.e ‘714.*<./°-'6IIiI . Tt I . • . \...... \\, , .,.. - •P / ) ..: pit*', (7% e\ ' 1 ' ''': . \ \ • .A. Iitsiii-.4.7,k,‘ \I- , .. A.. -A c % -, ,-,... 1. I, ,zi e,, - *OA - 0 - ) ct ji -,ii, .fill 1.-i. ._....: 1, li-s .,;:i . \ 4 1 , • . 1 - - - \ 1 ri) 1 It --c) \, '•-/,>; (-- _1* . iliNip, p.,.....„---.1;0•_.--------- 1 rn . It t . --1 .:. 3''‘ :. \c) -, — , ' . 1 \/ V" ' %. - , ' \ I o , . \ „ • t I ` •, g1/4... , A , HI ( b im • ''�. `4 1 -ar (T'' IPI WEL: D. .04 _ `f ...\ ea y ._ \ '. • Ill c) .:4 l '' . ut ...„ 1 .., - › 4 • z 01--, t , t. - \ . ...J..._// . . 0, ..„......_.. :6 l--1 ` • -1 © \� (A \ \ - • . - /11;14,976)71C Pelican Bay Water Quality Station Descriptions PB-10 Man Made Lake Approx 6.05 acres in size with Average Depth of 6 feet. Surrounded by single family villas cassified as Group II . Lake has mud bottom with sodded bank & seawall . Referenced in PBID W/M plan as Lake #2 water management system I . Populated with Bass, Brim & Koi with occassional turtles & alligators. Supports mallards, &Muscovey. Source of water is surface runoff & ground water seepage. Sample site midway of Lake off Crayton Road at outfall point. PB 11 Man made swale, grass lined banks & mud bottom. Receives water from Retention Areas in water management system I . Samples at west end of swale where swale connects to berm separating fresh & saltwater bodies. Exposed to air during dry season. Sample depth from 6 in. to 12 in. P13 13 Man made swale, grass lined banks & mud bottom. Receives water from Retention Areas in water management system II . Midpoint of berm II at catch basin on freshwater side (east) . Exposed to Air during dry season. Sample depth 6 in. to 12 in. Lagoon Man made lagoon, PUC lined. Receives water from Distric Wellfield & District Waste Water Treatment Plant Effluent. Sampled at south end at interconnect sluice gate. Sample depth 1 foot from surface. Had overflowed to District W/M facilities system 2 until 12/87. Ducks, alligators, wading birds, & fish observed. IF-3 Man made lake with mud bottom. One acre in size - average depth 4 feet. Receives runoff from surrounding single family area & 45 4/ - part of District W/M Facilities, Parklett Lake System #2. Samples taken at outfall headwall , wast end of lake off Ridgewood Drive. Sample depth 1 foot below surface. Ducks, wading birds, & fish observed. 1 6 Man made lake with mud bottom. 4.53 acres in size - depth average of 6 feet. Receives runoff from rentention areas in District W/M System II & golf course & groundwater. Sample point at west end of lake at outfall headwall , 1 foot below surface off P.B. Blvd. Ducks, wading birds, fish & alligators observed. F Man made swale with mud bottom. At North end of berm III at headwall , east side. Freshwater. Sample depth 6 in. to 1 foot. Receives water from Water Management System III . Exposed to air during dry season. E Man made swale with mud bottom. At golf course driving range. Sample point at discharge headwall at west end of driving range. Sample depth 6 in. to 1 foot. Receives water from retention areas in W/M System III . Exposed to air during dry season. PB 13 Man made swale with mud bottom at north end of berm 4 at headwall of catch basin. Freshwater side (east) . • Sample depth 6 in. to 12 in. Receives water from W/M System III . Exposed to air during dry season. B Man made lake with mud bottom. Average depth 4 feet - 1 .0 acre in size. Receives water from W/M System IV & golf course. Wading birds, fish & alligators observed. Sample site at outfall headwall on west side of lake. Designation lake 13 W/M System IV. Never exposed to air . A Man made lake with mud bottom. Average depth 4 feet - .9 acres in size. Receives water from W/M System IV 7 golf course. Wading birds, ducks, fish & alligators observed. Sample site at outfall headwall on south end of lake. Sample depth 1 foot from surface. Designation "Lake 16 W/M System IV" . Never exposed to air. TS5 Brackish Lake out off from Bay system. Lined with mangroves, mud bottom, average depth 3 feet. Receives flows from water management system 5 & 6. Wading bids, fish & alligators observed. Sample location at north end of lake at old pier. Sample depth 1 foot below surface. 2 TSB Estuarine (Upper Clam Bay) . Sample point located at marker in west end of upper Clam Bay. Sample depth 1 foot below surface. 167 Estuarine ( Inner Clam Bay) . Sample point at marker at west end of middle Clam Bay. Sample depth 1 foot below surface. DSP Estuarine (Outer Clam Bay) . Sample depth 1 foot below surface. 3 �� ERRATA NRMD COMMENTS, 3. Petitioner has agreed to submit a County environmental impact statement detailing the general effects as related to Shgll We�tgcp.s seij,Hpic gpgratigng in the Area of Critical State Concern. NRMD RECOMMENDATIONS, 2. a) Staff recommends that the current ST petition be approved since Shell Western has agreed to conduct studies and produce scientifically quantitative information relative to Shell Western' s proposed activities before submitting ' any future ST petitions. /~\ . w` .� ^ _ 1