Central Pine Barrens Comprehensive Land Use Plan
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Central Pine Barrens Comprehensive Land Use Plan Supplemental Draft Generic Environmental Impact Statement April 26, 1995 Central Pine Barrens Joint Planning and Policy Commission P.O. Box 587 3525 Sunrise Highway, 2nd Floor (Technical Services Building, Suffolk County Water Authority) Great River, NY 11739-0587 SUPPLEMENTAL DRAFT GENERIC ENVIRONMENTAL IMPACT STATEMENT FOR THE CENTRAL PINE BARRENS COMPREHENSIVE LAND USE PLAN PROJECT LOCATION: CENTRAL PINE BARRENS AREA - within the Towns of Brookhaven, Southampton and Riverhead and Villages of Quoque and Westhampton Beach LEAD AGENCY: Central Pine Barrens Joint Planning and Policy Commission 3525 Sunrise Highway, P.O. Box 587 Great River, New York 11739-587 Contact: Raymond P. Corwin, Executive Director (516) 563-0385 PREPARER: This Supplemental Draft Generic Environmental Impact Statement was prepared by: Suffolk County Planning Department 220 Rabro Drive, P.O.Box 1600 Hauppauge, New York 11788 and Suffolk County Water Authority Policy and Planning Department 3525 Sunrise Highway Great River, New York 11739 CONTACT: Raymond P. Corwin, Executive Director (516) 563-0385 DATE OF PREPARATION: April 1995 AVAILABILITY OF DOCUMENT: Copies of this Supplemental Draft Generic Impact Statement (SDGEIS) are available for public review and comment at the offices of the lead agency. DATE OF ACCEPTANCE: April 26, 1995 DEADLINE FOR COMMENTS: May 30, 1995 1. Summary........................................ ........................ 11 2. Proposed Action: Central Pine Barrens Comprehensive Land Use Plan . 13 2.1 Introduction .................................. ..................... 13 2.2 Purpose and Need for the Supplemental Draft Generic Environmental Impact Statement .......................................... ............ 14 2.3 Plan and SDGEIS Study Area Boundaries . ...................... 15 2.4 Required Approvals ........................... ..................... 15 3. Environmental Setting .......................... ........................... 16 3.1 Central Pine Barrens Zone ..................... ...................... 16 3.1.1 Geologic Overview ........................... .............. 16 3.1.1.1 Surficial and Subsurface Geology . ............. 16 3.1.1.2 Topography ............................... ........ 16 3.1.2 Soils Overview .............................. ............... 17 3.1.3 Hydrology and Water Quality Overview . ................. 18 3.1.3.1 Ground and Surface Water Resources . ........... 18 3.1.3.2 Flood Plain Areas ......................... .......... 19 3.1.4 Ecosystems Overview ......................... .............. 19 3.1.4.1 Ecosystems and Ecological Processes . ............ 19 3.1.4.2 Wetlands .................................. ........ 21 3.1.5 Cultural Resources: Historic and Archaeological .................. 24 3.1.6 Scenic Resources ............................ ............... 24 3.1.7 Physical Data ............................... ............... 25 3.1.7.1 Demographics .............................. ........ 25 3.1.7.2 Housing ................................... ........ 26 3.1.7.3 Land Use and Zoning ....................... ......... 26 3.1.7.4 Community Services ........................ ......... 27 3.1.7.4.1 Education and School Districts . ....... 27 3.1.7.4.2 Transportation Infrastructure . ........ 27 3.1.7.4.3 Sewage Treatment in the Pine Barrens . ....... 29 3.1.7.4.4 Water Supply ............................ 29 3.1.8 Air Resources and Noise . ................. 30 3.1.8.1 Climate ................................... ........ 30 3.1.8.2 Air Quality ............................... ......... 30 3.1.8.3 Noise ..................................... ........ 31 3.2 Receiving Areas ............................... .................... 35 3.2.1 Town of Brookhaven .......................... .............. 35 3.2.1.1 Overview.................................. ........ 35 3.2.1.2 Demographics ............................. ........ 38 3.2.1.3 School Districts .......................... ........... 38 3.2.1.4 Soils ..................................... ........ 39 3.2.1.5 Water Supply.............................. ......... 41 3.2.1.6 Ecosystems Overview ....................... ......... 41 3.2.1.7 Additional Existing Conditions Information .............. 42 3.2.2 Town of Riverhead ........................... .............. 61 3.2.2.1 Overview ................................. ........ 61 3.2.2.2 Demographics .............................. ........ 61 3.2.2.3 School Districts ......................... ........... 62 3.2.2.4 Additional Existing Conditions Information .............. 62 3.2.3 Town of Southampton ........................ ............... 67 3.2.3.1 Overview.................................. ........ 67 3.2.3.2 Demographics .............................. ........ 67 3.2.3.3 School Districts ......................... ........... 67 3.2.3.4 Additional Existing Conditions Information .............. 68 3.3 References.................................... .................... 82 4. Core Preservation Area Impacts . ............................. 84 5. Impacts on Geologic Resources . ............................ 88 5.1 Core Preservation Area Impacts . ....................... 88 5.2 Non-Core Impacts .............................. .................... 88 5.3 Central Pine Barrens Mitigation Measures . ......................... 89 5.3.1 Mitigating Standards and Guidelines . ................... 89 5.3.2 Mitigating Review Powers . ................ 90 5.4 Mitigating Effect of Creation of a 52,000 Core Preservation Area . 90 5.5 Unavoidable Unmitigated Impacts . ...................... 91 5.6 Irreversible Commitment of the geologic resources ........................ 91 6. Impacts on Soils ............................... ........................... 92 6.1 Core Preservation Area Impacts . ....................... 92 6.2 Non-Core Impacts .............................. .................... 92 6.3 Central Pine Barrens Mitigation Measures . ......................... 93 6.3.1 Mitigating Standards and Guidelines . ................... 93 6.3.2 Mitigating Review Powers . ................ 94 6.4 Mitigating Effect of Creation of a 52,000 Core Preservation Area . 94 6.5 Unavoidable Unmitigated Impacts . ...................... 95 6.6 Irreversible Commitment of the soil resources . ........................... 95 7. Impacts on Groundwater Quality . ............................ 96 7.1 Impacts of Central Pine Barrens Plan on Core Preservation Area ............. 96 7.2 Non-Core Impacts .............................. .................... 96 7.3 Central Pine Barrens Mitigation Measures . ......................... 98 7.3.1 Mitigating Standards and Guidelines . ................... 98 7.4 Mitigating Effect of Creation of a 52,000 acre Core Preservation Area . 99 7.5 Unavoidable Unmitigated Impacts . ......................100 7.6 Irretrievable Commitment of Resources . ........................100 7.7 References.................................... ....................100 8. Impacts on Water Supply Quantity . .............................101 8.1 Impact of Plan Implementation on the Core Preservation Area ...............101 8.2 Non-Core Impacts ............................. ....................101 8.3 Central Pine Barrens Mitigation Measures . .........................101 8.3.1 Mitigating Standards and Guidelines . ...................102 8.4 Mitigating Effect of Creation of a 52,000 acre Core Preservation Area . 102 8.5 Unavoidable Unmitigated Impacts . .......................102 8.6 Irretrievable Commitment of Resources . ........................102 8.7 References.................................... ....................103 9. Impacts on Ecological Resources . .............................104 9.1 Core Preservation Area Impacts . .......................104 9.2 Non-Core Impacts ............................. ....................105 9.3 Central Pine Barrens Plan Mitigation Measures . ..........................106 9.3.1 Mitigating Standards and Guidelines . ...................107 9.4 Mitigating effect of the Creation of a 52,000 acre Core Preservation Area . 108 9.5 Unavoidable Umitigated Impacts . ......................109 9.6 Irretrievable Commitment of Resources . ........................109 10. Impacts on Surface Water ...................... ............................110 10.1 Impact on the Core Preservation Area . ........................110 10.2 Non-Core Impacts ............................. ....................111 10.2.1 Brookhaven Town ............................ .............111 10.2.1.1 Brookhaven Town within the Central Pine Barrens ........111 10.2.1.2 Brookhaven Town outside the Central Pine Barrens Area . 112 10.2.2 Riverhead Town ............................. ..............113 10.2.3 Southampton Town ........................... .............125 10.3 Central Pine Barrens Mitigation Measures . .........................125 10.3.1 Mitigating Standards and Guidelines . ...................128 10.4 Mitigating Effect of Creation of a 52,000 acre Core Preservation Area . 129 10.5 Unavoidable Unmitigated Impacts . ......................129 10.6 Irretrievable Commitment of Resources . ........................130 11. Impacts on Cultural Resources . .............................131 11.1 Impact on Core Preservation Area . .......................131 11.2 Impact on Non-Core Cultural Resources . ........................131 11.3 Central Pine Barrens Mitigation Measures . .........................132 11.3.1 Mitigating Standards and Guidelines . ...................132 11.3.2 Mitigating Review Powers . ................133