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EAC Agenda 12/04/1991 COLLIER COUNTY ENVIRONMENTAL ADVISORY BOARD AGENDA DECEMBER 4, 1991: 9:00 a.m. COMMISSION BOARDROOM, THIRD FLOOR--BUILDING "F" I. ROLL CALL II. APPROVAL OF MINUTES-- NONE III. ADDENDA IV. OLD BUSINESS - DISCUSSION OF POLICIES AND PROCEDURES V. NEW BUSINESS VI. REGULAR AGENDA A. Rezone Petition No. PUD-84-35(1) "Courthouse Shadows" aka "Collier PUD" Section 11, 12, & 13, Township 50 South, Range 25 East Collier County, Florida B. Planned Unit Development Petition No. PUD-91-12 "Carillon" Section 13, Township 49 South, Range 25 East Collier County, Florida. C. Commercial Excavation Permit No. 59.80 "Bass Pit" Commercial Excavation Permit No. 59.423 "Dude Pit" Provisional Use Petition No. PU-91-1, "Southfield Farms LTD." Sections 7 & 18, Township 51 South, Range 27 East Collier County, Florida. VII. ADJOURNMENT VIII. WORKSHOP *********************************************************************** NOTES: A. [Board Members] : Notify PROJECT REVIEW SERVICES (643-8470) no later than 5 P.M. on Monday December 2, 1991, if you cannot attend this meeting or if you have conflict and thus will abstain from voting on a particular petition. B. [General Public] : 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 insure that a verbatim record of the proceedings is made, which record includes the testimony and evidence upon which the appeal is to be based. *********************************************************************** ,. ENVIRONMENTAL ADVISORY BOARD STAFF REPORT MEETING OF December 4, 1991 I. NAME OF PETITIONER/PROJECT: Petition No. : Planned Unit Development Amendment Petition No. PUD-84-35(1) Petition Name: "Courthouse Shadows" aka "Collier PUD" Applicant/Developer: Collier Development Corporation Engineering Consultant: Coastal Engineering Consultant, Inc. Environmental Consultant: Eric J. Heald, Ph.D, Heald & Associates Inc. Raymond R. Link, Consultant Biologist II. LOCATION: Section 11, 12, & 13, Township 50 South, Range 25 East; bounded on the north and east by U. S. 41, on the south by Haldeman Creek and on the west by Peters Avenue. III. PROJECT DESCRIPTION: The petitioner proposes to amend the PUD Document to allow retail shops in the place of the previously allowed hotel. The majority of the site has already been developed. Plan of Record: Water Management: "Collier Development Corporation, Courthouse Shadows PUD Master Plan" prepared by Coastal Engineering Consultants, Inc. , dated August 1991, no revisions. Environmental: Environmental Inventory and Assessment, Raymond Link, dated 6/1/1984. Vegetative Analysis, Eric Heald, dated 9/1991. PUD Master Plan (Courthouse Shadows) dated 8/1991. IV. STAFF COMMENTS: Water Management: The subject project site consists of 20. 08 acres area, 13 .10 acres of which have been already developed into a shopping center. Of the remaining 6.98 acres, 3.04 acres will be developed since Haldeman Creek (2 .7 acres) is part of this remaining area. R � EAB Meeting 12/'i/91 r''1 PUD-84-35(1) Page 2 The stormwater system is already in-place and it has been designed to accommodate the existing runoff as well as the proposed improvement runoff. The water management system consists of a series of swales, rock trenches and pipes which convey the projects runoff to two retention lakes located on the west end of the property. The controlled discharge is into Haldeman Creek via a weir structure and spreader swale. The water management system was designed to meet South Florida Water Management District criteria for water quality and quantity. The system includes one half inch (b") of dry pre-treatment as required on commercial projects by South Florida Water Management District. The dry pre-treatment is accommodated in a rock trench and swales. The project site falls within the Haldeman Creek easement. Environmental: A site visit was conducted by Project Review Services Environmental Specialist, Barbara Burgeson on October 22, 1991. The undeveloped portion of the planned unit development consists of 3± acres at the south end of the property, adjacent to Haldeman Creek. A portion of the western half of this area has been previously cleared. The balance of the property is densely vegetated. The majority of the site consists of live oak (Ouercus virginiana) , cabbage palm (Sabal palmetto) and slash pine (Pinus elliottii) . Some sections are more heavily vegetated by one or two of these species. Live oaks between twenty feet and forty feet in height dominate an area in the north central portion of the site, where they are associated with five or six tall slash pines. This area is worthy of preservation efforts as landscape features. A mangrove fringe of red mangrove (Rhizophora mangle) , black mangrove (Avicennia cterminans) , white mangrove (Laguncularia racemosa) and buttonwood (Conocarpus erecta) is located along the southern edge of the parcel abutting Haldeman Creek. This area is a Collier County jurisdictional wetland. The petitioner proposes construction of new stores and one hundred sixty-six (166) parking spaces. Since Phase One has provided one hundred sixty (160) parking spaces above the required five hundred thirty-two (532) (increase of 30%) , Staff recommends reduction of parking, in Phase Two, to the required one hundred fifty-one (151) spaces. Ordinance No. 84-35 (PUD) requires that native vegetation shall be utilized to the maximum extent possible in the site landscape design and that the goal shall be in the recreation of native vegetation and habitat characteristics lost on the site during construction or due to past activities. It also states that the developer will work with the County Environmentalist on specific site design in the Phase Two area. EAB Meeting 12/g/91 PUD-84-35(1) Page 3 The petitioner's environmental consultant has stated that the site shows evidence of remnant mesic hammock. To comply with Ordinance No. 84-35 (PUD) , the petitioner's site plan should reflect efforts to preserve or re-create habitat characteristics similar to what has naturally occurred on this parcel. V. RECOMMENDATIONS: Staff recommends approval of Planned Unit Development Amendment Petition No. PUD-84-35(1) with the following stipulations: Water Management: 1. A fifteen foot (15' ) maintenance easement along the north side of Haldeman Creek shall be provided and dedicated. This easement shall be measured from the top of the bank landward. 2. An adequate access easement shall be provided for access through the shopping center to Haldeman Creek. 3. Petitioner shall obtain a right-of-way permit for all construction within the Haldeman Creek easement. 4. Section 5.5 of the PUD document shall be replaced by Stipulations 1, 2 and 3 of this report. Environmental: 1. The petitioner shall delineate the limits of Collier County jurisdictional wetlands (the mangrove fringe) at the drip line. A twenty-five (25) foot landward buffer from the wetland jurisdictional line shall also be delineated and approved by Project Review Services - Environmental Staff. 2. Prior to final site development plan/plat approval a conservation easement shall be placed over the Collier County jurisdictional wetlands with protective covenants as per or similar to Florida Statutes Chapter 704.06. A non-exclusive . easement or tract in favor of Collier County, without maintenance responsibilities shall be provided for the twenty-five (25) foot buffer area. 3 . The petitioner shall reduce the parking spaces in Phase II, from the proposed one hundred sixty-six (166) to the required one hundred fifty-one (151) in order to maintain existing native vegetation (i.e. remnant mesic hammock area) within the proposed development. EAB Meeting 12/11/91 PUD-84-35 (1) Page 4 4 . The petitioner shall comply with all environmental ordinances and land development codes in effect at the time of final development order approval (s) . PREPARED BY: -AZ\ //XS/7/ July Adarme Date Senior Engineer hVZSA Barbara S. Burgeson Date Environmental Specialist II RE E i :Y: / / /zA/ Stephanie R. Smith, P.E. Date Technical Services Supervisor 7I. //./.2o/9/ 'Barbara N. Prr oski Date Ch'ef Environmen/al Specialist J• n F. adajewsi' , P.E. Date r ject Review S- rvices Manager • o T..1 -�L.':w.yr; It yV k, - �� .. R .0.•. :•= f 4 (—IOC 10N , M F P - . ^ m l.0sss.. D[? 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Adarmes ,7(,rJ Senior Engineer RE: Petition No. PUD-84-35'(1) "Courthouse Shadows" Section 11, 12 & 13, Township 50 South, Range 25 East Collier County, Florida DATE: December 5, 1991 The subject petition was approved by the Environmental Advisory Board (EAB) on December 4, 1991 with the following stipulations. Water Management: 1. An adequate access easement shall be provided for access through the shopping center to Haldeman Creek. 2 . Petitioner shall obtain a right-of-way permit for all construction within the Haldeman Creek easement. 3 . Section 5.5 of the PUD document shall be replaced by Stipulations 1 and 2 of this report. Environmental: 1. To maintain existing native vegetation (i.e. remnant mesic hammock area) within the proposed development, no more parking spaces shall be permitted than that shown in an updated cross parking easement and as recorded in public records. 2 . The petitioner shall comply with all environmental ordinances and land development codes in effect at the time of final development order approval (s) . JA/ew-4618 cc: PUD-83-3,x(1) Files EAB Binder Chrono File ENVIRONMENTAL ADVISORY BOARD STAFF REPORT MEETING OF December 4, 1991 I. NAME OF PETITIONER/PROJECT: Petition No. : PUD-91-12 Petition Name: Carillon Applicant/Developer: Wallace L. Lewis, Jr. , Trustee, Wilma Southeast Inc. , contract purchaser. Engineering Consultant: Wilson, Miller, Barton & Peek, Inc. Environmental Consultant: Wilson, Miller, Barton & Peek, Inc. II. LOCATION: Section 13, Township 49 South, Range 25 East; bounded on the north by Pine Ridge Road, on the west by Airport-Pulling Road, on the south and east by vacant agricultural land. III. PROJECT DESCRIPTION: /'1 The petitioner proposes to create a mixed use planned unit development consisting of residential and commercial facilities. The breakdown of the project site will consist of 24. 01 acres of commercial use, 6.23 acres of residential use, and 12 .97 acres of lakes, water management and open space, for a total of 43.21 acres. Planof Record: Water Management: "Carillon, Conceptual Water Management Plan", prepared by Wilson, Miller, Barton & Peek, Inc. , dated 8/29/91 no revisions. Environmental: "Carillon Conceptual Master Plan", Wilma Southeast Inc. , Florida Planning Studio Inc. . (Received 9/12/91) "Carillon Conceptual Water Management Plan" Wilson Miller, Barton & Peek, Inc. , dated 8/29/91. IV. STAFF COMMENTS: Water Management: The proposed water management system consists of lakes and dry detention areas. A series of storm sewers, swales and overland flow will convey the runoff to the lakes and detention areas. The EAB Meeting 12/4/91 PUD-91-12 Page 2 discharge has been limited to 0.06 cfs/acre or 2.6 cfs in accordance to Ordinance No. 90-10. The control structure is proposed to be located on the southeast corner of the project site and it will discharge into the Airport Canal. Off-site runoff coming onto site from adjacent parcels will be routed around the project water management system through swales or pipes. The stormwater system meets the requirements for water quality and water quantity in accordance to South Florida Water Management District rules. Environmental: The subject property, currently zoned A-2 consists of actively farmed and fallow fields. The site was cleared for farming and designed with five foot irrigation ditches between the planting areas. Many of the ditches are vegetated with Brazilian pepper (Schinus terebinthifolius) and cattails (Typha sp. ) and may be determined as jurisdictional wetlands by the Army Corps of Engineers or the Florida Department of Environmental Regulation. [The County does not claim jurisdiction over the site. ] A site visit by Staff revealed potential hazardous waste contamination related to the storage tanks located on the farm site. Since this n site has been used for many years as agricultural fields the potential also exists for contamination due to extended use of pesticides and/or fertilizers. V. RECOMMENDATIONS: Staff recommends approval of Planned Unit Development Petition PUD-91-12 "Carillon" with the following stipulations: Water Management: 1. A Big Cypress Basin right-of-way permit allowing discharge into the Airport Canal shall be provided prior to final construction plan approval. 2. A minimum twenty (20) foot maintenance easement along the east side of the Airport Canal abutting the property shall be preserved and dedicated as a maintenance easement. This easement shall be measured from the top of the bank. Environmental: 1. The following changes shall be made to the proposed PUD document: a) Change 6.03, A. to read: Petitioner shall be subject to Collier County Growth Management Plan Conservation and Coastal Management Element and the Collier County Land Development Code Article 3. EAB Meeting 12/4/91 PUD-91-12 Page 3 b) Change 6. 03, B. to read: Petitioner shall be subject to Collier County Land Development Code Division 2 .4 and Division 3 .9. c) Delete 6. 03 , C. d) Change 6. 03 , D. to read: Petitioner shall be subject to Collier County Land Development Code Section 2. 2 .25. e) Delete 6. 03 , F. 2 . The following addition shall be made to the proposed PUD document Section 6. 03 : a) "Prior to preliminary site development plan approval a hazardous waste assessment shall be submitted to Collier County Project Review Services Environmental Staff for review. " PREPARED BY: lc/ //4A July C Adarmes Date Senior Engineer - 2 Barbara S. Burgeson, Date Environmental Specialist II REVI D ;Y: 1 /4? Stepha ie R. Smith, P.E. Date Technical Services Supervisor �/- //4 24,//9/ arbara N. ry'noski Date Chief Environmental Specialist / 44 J n F. Madajews , P.E.P& k ate P oject Review S: vices Manager `�• . /tr BENT ErI'sFT.II(YERS z9 1 .r VILLAGE i W1('.('INS , PAs no /•=e4c ' IMPERIAL ''•VANDERBILT OUML CREEK Wiggins Pass u \ BEACH PATI RIVER d V n IuuOKAIEE RO r TO ILMOKALEE 1 J 1 t\ a REGENTS PARK L 4) '^ VICTORIA PARK— . "CRESCENT . 6,,k O LAKES iRITi dEACi�q Y �pr a I CARLITON I n PROJECT LOCATION j PINE LOGE i -• . 1 EUCAN 1 , BAY INDUSTRIAL Clam Pass PARK ._.. YMCA . REGISTuY1--r+ VINEYARDS" SEAGATE OR PINE RIDGE 0 a NAPLES BATH �o d TENNIS CLUB GREEN BLVO 0 i o NAPLES TS O e M WILDERNESS WYNDEMERE m 4 GOLDEN HARQOUR DR. .se U t GOLDEN GATE PKWY m Llx1°'s Pass c .. y � _ r-.-BEAR � .NATURE S PAW • o I CENTER 1 fl 4 LOWOERMILK PARK OF POST OFFICE 4 /".'"N GOLF CLUB >i'• DOLA ERC RADIO A0. • I^ 'TO ALUGATOF HOSPITAL W •AVE.N. AIRPORT• FOXFIRE .... g sTNAvE S. • • ICE STATIOII DAVIS BLVD. N '" v j TY ••••• KINGS LAKE951 u % •• •0THOUSE 11 W • E NAPLES PIER OLD APE c z s. Gulf PO Y a - RATTLESNAKE NALWOCK RD S THONASSON OR. of o . 41 P4ex i^O Gordon Pass tar EAGLE CREEK '04 . • • t WILSON • MILLER • BARTON & PEEK, INC. PROJECT LOCATION MAP ��,va WILSON PROFESSIONAL CENTER,SUITE 200 rim 3200 BAILEY LANE AT AIRPORT ROAD,NAPLES, FL 33942 —4 6 Engineers Planners Surveyors Landscape Architects WILMA.SOUTHEAST.INC. Environmental Consultants Construction Managers DEVELOPMENT SERVICES DEPARTMENT PROJECT REVIEW SERVICES SECTION MEMORANDUM TO: Ron Nino, Senior Project Planner Planning Services FROM: July C. Adarmes Senior Engineer RE: Petition No. PUD-91-12 "Carillon" Section 13, Township 49 South, Range 25 East Collier County, Florida DATE: December 5, 1991 The subject petition was approved by the Environmental Advisory Board (EAB) on December 5, 1991 with the following stipulations. Water Management: 1. 1. A Big Cypress Basin right-of-way permit allowing discharge into the Airport Canal shall be provided prior to final construction plan approval. n 2. A minimum twenty (20) foot maintenance easement along the east side of the Airport Canal abutting the property shall be preserved and dedicated as a maintenance easement unless documentation is provided from the Big Cypress Basin indicating that the easement is not required. This easement shall be measured from the top of the bank. Environmental: 1. The following changes shall be made to the proposed PUD document: a) Change 6.03, A. to read: Petitioner shall be subject to Collier County Growth Management Plan Conservation and Coastal Management Element and the Collier County Land Development Code Article 3. b) Change 6.03, B. to read: Petitioner shall be subject to Collier County Land Development Code Division 2.4 and Division 3 .9. c) Delete 6. 03, C. n Ron Nino PUD-91-12 Page 2 d) Change 6.03, D. to read: Petitioner shall be subject to Collier County Land Development Code Section 2.2.25. e) Delete 6.03, F. 2. The following addition shall be made to the proposed PUD document Section 6.03: a) "Prior to preliminary site development plan approval a hazardous waste assessment shall be submitted to the appropriate enforcement agency (Department of Environmental Regulation or Collier County Pollution Control Department) and copied to Project Review Services. JCA/ew-4617 cc: PUD-91-12 Files Chrono File 1 I i ,......JtilER COLS - -' �`'� Development Services Department 2,4'd I IV., Community Development Division / Collier County Government r > 2800 North Horseshoe Drive / Naples,FL 33942-6917 ii a Phone:813 / 643-8400 y \' \t) PROJECT REVIEW SERVICES '4 a `�'y� o l'il AND 0 November 25, 1991 RE: Excavation Permit Application No. 59.80 and No. 59.423 "Bass Pit" and "Dude Pit" Section 7 and 18, Township 51 South, Range 27 East Collier County, Florida Dear Property Owner: In accordance with the provisions of Division 3.5.5.3 of Ordinance No. 91-102, which regulates excavations within Collier County, we are required to serve notice to all adjacent property owners that the Environmental Advisory Board will consider a request to perform an excavation described at the location on the attached Staff Report. The Public Hearing to consider this item and other matters will begin at 9:00 a.m. on Wednesday, December 4, 1991, 1991 at the Collier County Government Complex, Building "F", Third Floor, Commissioners Board Room. While . your presence is not required at this meeting, all interested parties are invited to attend and be heard. In addition to those parties wishing to speak at .themeeting, any written comments may be submitted to this office prior to the meeting for consideration by the Environmental Advisory Board. Should you have any further questions regarding the above, please feel free to contact this office at (813) 643-8471. Sincerely, 4 ev4___Ae , , _ . _ , . , July C. Adarmes I Senior Engineer , 1 JCA/gs . Attachments (2) .._. it s� ; ,-,-kk ENVIRONMENTAL ADVISORY BOARD STAFF REPORT MEETING OF December 4, 1991 I. NAME OF PETITIONER/PROJECT: Petition No. : Provisional Use Petition No. PU-91-1 Commercial Excavation Permits No. 59.30 and No. 59.423 Petition Name: "Southfield Farms Limited", "Bass Pit" and "Dude Pit" Applicant/Developer: Harold Dude, President of Southfield Farms LTD. V Engineering Consultant: Robert K. Lockhart, P.E. Environmental Consultant: Geza Wass De Czege, Southern Biomes II. LOCATION: Section 7 & 18, Township 51 South, Range 27 East; bounded on the north by Fritchey Road and agricultural land, on the east and west by agricultural land and on the south by a junk yard facility. III. PROJECT DESCRIPTION: The petitioner proposes to obtain a provisional use and related excavation permits to complete an earth mining operation on a 203 acre site which began approximately ten (10) years ago, but was abandoned in recent years. Also there will be an excavation of trenches around the earth mining excavation for the purposes of providing raw water supply source for the Marco Island utility company. The proposed lake will consist of 84 . 0 acres. The trenches will have an area of 21.5 acres. There will be a 0.5 acre area reserved for the raw water facilities. An area of 8.7 acres will be utilized for processing of excavated materials. The site will preserve a wading bird habitat management area of 28 acres. The remainder of the site will consist of a haul road and open space. The only access to the project site will be from U. S. 41. Plan of Record: Water Management: "Southfield Farms Limited V, Proposed Master Plan Lake Excavation/Earth Mining Operation (Reference county Excavation permit No. 59.80) " and "Southfield Farms Limited V, Proposed Master Plan Trench Excavation/Surface Water Extraction, (Reference County Excavation Permit No. 59.423) ", prepared by Lockhart Engineering, dated April 1991, nine revisions (lake excavation) ; eight revisions (trench excavation) . EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 2 Environmental: Same as Water Management. IV. STAFF COMMENTS: Water Management: The subject project property was originally given a Provisional Use Zoning approval and an excavation permit as an earth mining operation in 1979 by the Board of County Commissioners in Collier County. The excavation began in the southern end of the tract in Section 7, but prior to completion of the excavation, the original contractor went out of business. Subsequent excavation work by several contractors involved the stripping of the overburden and hauling of same off-site. It was through this activity that the site was substantially scarred, with natural ground elevation being approximately at elevation 5. 0 ft. NGVD. The overburden was removed down to the cap rock at an average elevation of 2 .5 ft. NGVD, which resulted in an area of approximately 100 acres that experiences periodic/seasonal flooding due to surface water run-off. These areas were left abandoned with an average of 18 inches of standing water during the wet season and are substantially dry during the dry season. Since early 1988, there has been no activity on-site and the property ownership was acquired in total by the current owner, Southfield Farms Corporation. Due to termination of activity on-site, the current direction being pursued is the re-submission, to all appropriate agencies, for applicable permits. As a result of the previous excavation activities on the site, a large, shallow impoundment with one foot deep, 16 acre lake area and a trench system were created making an ideal habitat for wading and diving birds. A 28 acre area has been proposed as a preserve for wildlife habitat. The Florida Game and Fresh Water Fish Commission (FGFWFC) has been contacted by the petitioner, and prior to any excavation approval, the FGFWFC will provide recommendations and any restrictions of excavation activities during the nesting season. The site will consist of two separate permits; one permit for the trenches for the water withdrawal and the other for the lakes. The applicant has requested two separate permits so that the water withdrawal to Marco Island may begin prior to the completion of the lake. This is feasible because the two excavations will not n be interconnected. EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 3 The water withdrawal trenches will be excavated in two phases. The first phase will consist of the southerly trench and the second phase will be for the eastern and western trench sections. All excavated material from the trenches will remain on-site until the improvements on U. S. 41 (right turn lane) have been constructed. The permit for the lake will not be issued until the trenches are completed and the road improvements constructed. The existing drainage characteristics of the property include on-site retention of surface water run-off with no direct discharge off-site. Applicant indicates that there are no off-site flows into the property, primarily due to the fact that the adjacent properties are either existing ditched farm lands or are farm lands that retain all surface waters on-site. The subject property also has previously been altered during early excavation activity with the construction of berms along the west, north and south sides to keep water out. However, occasionally overflow from the ditches has occurred but only during the peak wet season when the whole area is inundated. On May 8, 1991, the excavations and the provisional use petition was heard by the Water Management Advisory Board (WMAB) . The WMAB members, as well as concerned property owners adjacent to the project site, raised questions in relation to the potential effects of this activity on the water quality and adjacent ground and water surfaces as well as the haul routing. The WMAB agreed to continue all petitions and not bring them back to the WMAB for two months. On July 10, 1991, the subject petition was heard again only for the provisional use since the information provided before WMAB for the excavations was not adequate enough for Staff to make any kind of recommendations in terms of maximum excavation depths. The WMAB members, as well as adjacent property owners, had concerns regarding any potential effects of the proposed excavation on the properties adjacent to the project site in terms of salt water intrusion, and lowering of the water table and its effects on crop yields and pumping. The WMAB directed Staff to contact the South Florida Water Management District (SFWMD) to discuss the District's review of the water use permit, which has been issued. The adjacent residents were also concerned with where the haul route was going to be located, as well as fencing the site. The WMAB recommended continuing this petition until these concerns were addressed by the petitioner. Following, there is a discussion of each concern brought up by the WMAB. EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 4 1. The SFWMD has responded to the County and stated that their permits were issued in accordance with their minimum requirements. 2 . The haul route and fencing issues will be stipulated to limit the haul route to U. S. 41. 3 . The petitioner's consultant for the water quality analysis (Missimer & Associates, Inc. ) has provided the County with an analysis of hydrogeologic impacts resulting from mining and water production on this site. The Collier County hydrogeologist, Dr. Gail Gibson, has been reviewing and interpreting this analysis. The most important questions that have been raised are: To what depth is the excavation safe? What effects would the water pumping have on the surrounding properties? Extent of any salt water intrusion into the water table? 4 . In the petitioner's analysis of the geologic data, the Bonita Springs Marl semi-confining layer was interpreted to be of varying thickness across the site, and as being absent across n both the northern part and in the central area of the site. This interpretation also placed the depth to the top of this unit as being between approximately 15 and 24 feet below the surface. Dr. Gibson's interpretation of geologic data is that the proposed 30 foot excavation depth would breach the Bonita Springs Marl. The petitioner's analysis showed that under pumping conditions, chloride values of 160 to 200 mg/i could be expected from upconing beneath the excavation in the presence of a confining unit. The same analysis suggests that chloride values of 200 to 220 mg/i could be expected in the excavation in the absence of a confining unit. Dr. Gibson's conclusions based on his interpretation of the presence of the Bonita Springs Marl across the site, and the petitioner's interpretation of the extent of the increase in chloride values is that the presence of a continuous layer would serve to retard saline water upconing during pumping. Whereas, a discontinuous layer or absence or otherwise ineffective confining layer would have little or no effect on upconing during pumping. 5. The petitioner's consultant generated a computer model of the generalized effects on the ground water table of the combined maximum permitted withdrawal volumes of the proposed site and the surrounding users. The model illustrates the depression n of the water across the modeled area, including the generalized withdrawal locations of the surrounding users and the proposed site. The model also predicts that the radius of EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 5 the cone of depression at the one (1) foot drawdown contour would be increased by 900 feet. This model was based on generalized information in the form of summarized water usage by section and assuming a central location of all wells within three (3) adjacent sections. Dr. Gibson's analysis of the water quality report, raised questions due to inconsistencies among data, data analysis, and the conclusions based on that data. As an example of these discrepancies, Dr. Gibson related to the safe yield report of August 1990, in which report models (Fig. 5-5) indicated that upconing of saline waters with chloride concentrations of 200 to 220 mg/i could occur, yet the text of that report indicated a maximum value of approximately 190 mg/1 could occur. Discrepancies like these make it very difficult for County Staff to arrive at any kind of recommendations. However, after a period of time of communication between the County and the petitioner, it is recognized the the methodologies used to acquire geologic and hydrogeologic data are generally acknowledged as adequate. Based on this, Staff feel comfortable making a recommendation for this petition. The consultant for the petitioner recommends water quality monitoring for dissolved chloride, conductivity, and pH. The monitoring frequency of once weekly during excavation with dewatering, monthly during excavation without dewatering, and prior to excavation (interval unspecified) was suggested by the consultant. More over, the SFWMD consumptive use permits require ground water monitoring during any withdrawal of water for public consumption. Staff recommends a pre-excavation ground water monitoring program that includes the parameters mentioned above from those sites of the permanent monitoring wells with a minimum of one sampling. The trenches are proposed to be excavated to a depth of 15 feet, which would be to the top of the Bonita springs Marl as interpreted from the Alamo/Saxena (ASC) data. The lake has a proposed excavation depth of 30 feet. This depth would penetrate the entire thickness of the Marl, even at the deepest extent of the top of the unit. Based on this data and interpretation, Staff recommends that the maximum excavation depth be limited to fifteen (15) feet. The stormwater retention system for this project has been designed for a 25-year, 3-day storm event with zero discharge. The water management system meets the requirement of water quality and n quantity in accordance with SFWMD. EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 6 Environmental: Collier County Project Review Services Environmental Staff took petition PU-91-1 to the Environmental Advisory Council (EAC) on April 17, 1991. The petition was presented and reviewed by the EAC with recommendations to include nine stipulations (see recommendations, Environmental) . The following Staff comments are excerpts of the 4/17/1991 EAC staff report. Collier County Project Review Services Environmental Staff, Collier county Environmental Services Hydrogeologists and Florida Game and Fresh Water Fish Commission Staff visited the site on January 14, 1991 and March 1, 1991, and offer the following observations: The subject property is the site of a previously abandoned excavation which has created a functioning wetland with significant wildlife value. The shallow previously mined pit has rock and borrow piled along the edges and scattered throughout the center. A cypress dominated area is located to the northeast of the pit; separated by a berm. Some of the wildlife observed on site visits include woodstorks in large numbers, ospreys, mallard ducks, an immature bald eagle, little blue herons, tricolored herons, snowy egrets, white ibis, red shouldered hawks, American alligators with young, Florida sandhill cranes, great blue herons and greater yellowlegs. The site contains significant habitat for wading and diving birds and foraging raptures. Project Review Services Environmental Staff formally requested a letter of technical assistance from the Florida Game and Fresh Water Fish Commission. That letter recommended mitigation for impacts to listed wildlife species. Staff has included those recommendations as stipulations. This site's proximity to the Collier County Salinity Line (U.S. 41) poses a potential for salt water intrusion under heavy pumping. The applicant is currently addressing this problem with the Collier County Environmental Services hydrogeological staff. V. RECOMMENDATIONS: Staff recommends approval of Commercial Excavation Petition No. 59.423 and Provisional Use Petition No. PU-91-1 "Dude Pit (Trenches) " with the following stipulations: n • EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 7 Water Management: 1. The excavation shall be limited to a bottom elevation of -10. 0 ft. NGVD. All disturbed areas proposed for lake excavation shall be excavated to minimum elevation of -4.0 ft. NGVD. 2. Off-site removal of material shall be subject to "Standard Conditions" imposed by the Transportation Services Division in document dated 5/24/88 (copy attached) . 3 . Where groundwater is proposed to be pumped during the excavating operation, a Dewatering Permit shall be obtained from the South Florida Water Management District, and a copy provided to Project Review Services for approval prior to the commencement of any dewatering activity on the site. 4. No blasting will be permitted unless issued a separate permit by Collier County Project Review Services. 5. If trees are to be removed as a result of the excavating operation, a vegetation removal permit, required by the Land Development Code shall be obtained from Collier County Project Review Services before work shall commence. 6. All provisions of Collier County Ordinance No. 91-102, Article 3 , Division 3 .5 shall be adhered to. 7. Copy of South Florida Water Management District construction/operation permit or early work permit shall be provided prior to excavation permit approval. 8. This approval is subject to the approval of the Board of County Commissioners of Provisional Use Petition No. PU-91-1. 9. No Excavation Permit shall be issued until all impact fees have been paid. 10. All stipulations and conditions of Provisional Use Petition PU-91-1 shall be adhered to. 11. No off-site removal of material shall be allowed until right turn lanes are built on U. S. 41 right-of-way. 12 . Haul route shall be limited to U.S. 41. 13 . Property shall be fenced around its entire perimeter. r-� EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 8 14. Prior to excavation permit approval, a water quality monitoring program including, but not limited to dissolved chloride, conductivity, pH and frequency of application shall be submitted to Project Review Services for review and approval. Staff recommends approval of Commercial Excavation Petition No. 59.80 and Provisional Use Petition PU-91-1 "Bass Pit (Lake) " with the following stipulations: 1. The excavation shall be limited to a bottom elevation of -10.0 ft. NGVD. All disturbed areas proposed for lake excavation shall be excavated to minimum elevation of -4.0 ft. NGVD. 2 . Off-site removal of material shall be subject to "Standard Conditions" imposed by the Transportation Services Division in document dated 5/24/88 (copy attached) . 3 . No blasting will be permitted unless issued a separate permit by Collier County Project Review Services. 4 . If trees are to be removed as a result of the excavating operation, a vegetation removal permit, required by the Land Development Code shall be obtained from Collier County Project Review Services before work shall commence. 5. All provisions of Collier County Ordinance No. 91-102, Article 3, Division 3.5 shall be adhered to. 6. Copy of South Florida Water Management District construction/operation permit or early work permit shall be provided prior to excavation permit approval. 7. This approval is subject to the approval of the Board of County Commissioners of Provisional Use Petition No. PU-91-1. 8. No Excavation Permit shall be issued until all impact fees have been paid. 9. All stipulations and conditions of Provisional Use Petition PU-91-1 shall be adhered to. 10. No dewatering will be allowed for the lake excavation. 11. No excavation permit for the 84. 0 acre lake (Excavation Permit No. 59.80) will be issued until the excavation of the trenches under Permit No. 59.423 is completed and the off-site improvements (right turn lanes) on U. S. 41 right-of-way are built. r-1 EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 9 12 . Haul route shall be limited to U.S. 41. 13 . Property shall be fenced around its entire perimeter. 14. Prior to excavation permit approval, a water quality monitoring program including, but not limited to dissolved chloride, conductivity, pH and frequency of application shall be submitted to Project Review Services for review and approval. Environmental: Staff recommends approval of Provisional Use Petition No. PU-91-1, subject to the following stipulations: 1. An approved wading bird management area shall be established in accordance with Florida Game and Fresh Water Fish Commission (FGFWFC) recommendations in the north one quarter to one half of the proposed borrow pit area unless otherwise agreed upon by FGFWFC and a letter releasing the petitioner of these requirements is submitted to Collier County Project Review Services Environmental Staff prior to issuance of excavation permits. 2 . A wading bird habitat management plan shall be developed, approved by Florida Game and Fresh Water Fish Commission, and implemented prior to issuance of excavation permits. Seasonal wading bird use shall be monitored by a qualified environmental consultant to establish success of management area. 3 . Turbidity barriers shall be used between the excavation and wildlife management areas. No water shall be discharged into the management area. The barriers shall be clearly indicated on the excavation plans. 4. If the management area is determined to be unsuccessful by the Florida Game and Fresh Water Fish Commission (FGFWFC) , the applicant shall provide, prior to issuance of excavation permits, in-kind off-site mitigation (i.e. kind purchase) on a 2 : 1 basis, or as approved by FGFWFC. 5. Excavations and rock processing shall not occur within 750 feet of the wading bird management area during woodstork nesting season. Blasting operations shall be restricted to the non-nesting season. EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 10 6. The Florida Game and Fresh Water Fish Commission shall be extended the opportunity to review and comment on the final configurations of the excavations, prior to issuance of excavation permits, to ensure that wildlife habitat has been adequately protected, by appropriately designed shelves and slopes. 7. Prior to issuance of excavation permits, the petitioner shall provide an adjacent well survey within the influence of dewatering drawdown. The survey shall include location of wells, uses, depths, withdrawals and predicted effects the project will have on the surrounding wells. Petitioner shall address the potential for saltwater intrusion prior to issuance of permits for the commercial excavation. 8. Prior to issuance of excavation permits an approved groundwater monitoring plan shall be submitted with specified parameters, monitoring schedule, proposed allowable variations and contingency plan if variables exceed their allowable limits. These plans shall be reviewed and approved by Collier County Environmental Services hydrologists. 9. The excavations shall not exceed twenty (20) feet in depth unless it can be demonstrated from a comparative water quality study that depths in excess of twenty (20) feet will not, have a detrimental effect on the groundwater resources in the surrounding area. This determination must be addressed prior to issuance of commercial excavation permits for the site. 10. Prior to issuance of excavation permits, the applicant must perform evening wildlife surveys for the presence of wading bird roosting areas and solicit management recommendations from the Florida Game and Fresh Water Fish Commission (FGFWFC) . The limits of excavation may be revised to comply with the FGFWFC management recommendations. NOTE: Stipulations 1-9 were approved by EAC in the meeting of April 17, 1991. In the event that the Board of County Commissioners denies Commercial Excavation Petition No. 59.80 and 59.423, and Provisional Use Petition PU-91-1 "Bass Pit (Lake) "and "Dude Pit (Trenches) ", the following stipulation is recommended by Staff: The owner shall be responsible for clearing and restoring the property of all debris, equipment, stockpiling, etc. from the original excavation permit. Contact with Collier County Project Review Services shall be made in order to obtain the proper permits. EAB Meeting 12/6/1991 Petitions PU-91-1/59.80/59/423 Page 11 0 PREPARED BY: --N/tel" lq; . 't-Lt - //i I/ 2.Z/7( July C. Adarmes to Senior Engineer Barbara S. Burgeso �— Date / Environmental Specialist II I REV ED BY: _____:4_ it (2-2/9/ Steph ie R. Smith, P.E. Date Technical Services Supervisor -, ' 12y-it,..6,SL 1/ arbara N. PYyhoski Date/ /9/ Chief Environmental Specialist ‘j - 1Ju14,L4AfrQ /1r c744uhn F. Madajews , P.E. Date ' oject Review Sevices Manager •;,•••,'-'. . • tiei, 7 6 I 9 •'%' ;i•••• • 1z I 1 r•;••••,-;://, .••••/••/'-'4;'.-A .i/. 11 tl r/' SY...."/.1.'.. ./,' / I / / / • /..://.../....-.-7..7.,.y./.., 42;1( ,pf,.. %'•• 1 I 16 71,i I ! ! 5 I , (C.R. 864) I. I k St : <' HAMMOCK ROAD I t 1 1 1 �!r ' I I KOUtt TRY I 19 • 20 /' , K414P0i 1 24 23 I I ts I ! • } '_.. i. .r • " I 29 I ••, • 26 zs . • • - ... - -ryr.^-.•....,.-,.-...•.. ..-- - . .. . _ . _ j - . ,, • ' ' a�/ �/ I JS ! 36 31 • ! ! • 014:4400• . 1cni ' r.r.'. 3 2 1 ! • I • - PROJECT_! _ . I --.....,. SITE i 'j I dl 2 i 11 12 r• `!" S • I :� Ia 41f.-s t3 10 117 I 16 .y ) COLI .R COUNTY TRANSPORTATION ST 'ICES "STANDARD CONDITIONS" • EXCAVATION PERMIT APPLICATIONS INVOLVING OFF-SITE REMOVAL OF MATERIAL The intent of these "Standard Conditions" are to provide excavation permit applicants a summary of conditions. which may affect their projects and which should be taken into consideration during all stages of project development: 1. Haul routes between an excavation site and an arterial road shall be private with property owner(s) approval or be a public collector road built to standards applicable t:o handle the resulting truck traffic. Where residential areas front collector roads, appropriate turn lanes, buffer. and bikepath shall be required as minimal site improvements and if recommended for approval, shall be so with the condition that the Transportation Services Administration reserves the right to suspend or prohibit off-site removal of excavated material should such removal create a hazardous road condition or substantially deteriorate a road condition; such action by the Transportation Services Administration shall be subject to appeal before the Board of County Commissioners. 2 . Haul routes utilizing public roads shall be subject to road maintenance and road repair or an appropriate fair share by the permittee in accordance with Excavation Ordinance No. 88-26 and Right-of-Way Ordinance No. 82-91. 3 . Off-site removal of excavated material shall be subject to Ordinance No. 85-55 (Road Impact Ordinance) . A traffic and road impact analysis shall be made by the County to determine the effects that off-site removal of excavated material will have on the road system within the excavation project's zone of influence. If appropriate, road impact fees in accordance with Ordinance No. 85-55 shall be paid prior to the issuance of an excavation permit. 4 .- The Transportation Services Administration reserves the right to establish emergency weight limits on public roadways affected by the off-site removal of excavated material; the procedure for establishment of weight limits shall be the presentation of an applicable resolution before the Board of County Commissioners. Should weight limits be instituted, the permittee shall be responsible to implement measure to assure that all heavy truck loadings leaving the permit's property conform to the applicable weight restriction. 5. The Excavation Performance Guarantee shall apply to excavation operations and also the maintenance/repair of public roads in - a accordance with current ordinances and applicable permit stipulations. ; .— - ---i'S :�-r.'-,�'�s.:;�_a-•tier.1 i'a;�-v 4v'•i^.L:i�E:►-.:C^v -?=_ ~ =_..%:_±•-...i •i r- ;w�.: - :�s'.1e:_...-_.- ai .,.-.rte. �..^i.�. y\~' .,t sr... �! _ - - _ .. .-• _ - - '_ .- • 6. Based on soil boring information per Ordinance No. 88-26, a blasting permit may be appropriate. Should a blasting permit application be submitted and should residential areas exist within one mile of the excavation site, the County reserves the right to deny a blasting permit based on concerns for off-site impacts from blasting at an excavation site. Should a blasting permit be considered and approved, the minimum conditions of approval in addition to conditions per Ordinance 88-12 are as follows: A. Structure inventory/monitoring and applicable property owner release as required by the County Engineer. B. Security bond applicable to private property damage acceptable to the County. C. Control of size/depth/number of charges per blast by the County Engineer. D. The right of the County to suspend and/or revoke blasting permit authority should be determined that blasting activities are creating unacceptable off-site conditions either in terms of private property damage and/or related physical effects of blasting operations. /"`"• 7. No excavation permit shall be issued until receipt of a release from the Transportation Services Administration applicable to proper mitigation of off-site impacts, meeting of applicable provisions of Ordinance No. 82-91, Ordinance No. 85-55, and Ordinance No. 88-12. doc. 2636 Reference to letter of 5/24/88 Revised 3/90 ' SRS/mh • • • • rte