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HomeMy WebLinkAboutDI 92-03; Carlsbad Master Drainage Plan; Discussion Item (DI)(TO BE COMPLETED BY THE PLANNING DEPARTMENT) CASE NO. EIA 92-4 DATE: APRIL 24. 1992 BACKGROUND 1. CASE NAME: CARLSBAD MASTER DRAINAGE PLAN 2. APPLICANT: CITYOF CARLSBAD 3. ADDRESS AND PHONE NUMBER OF APPLICANT: 2075 LAS PALMAS DRIVE CARLSBAD. CA 92008 (6191 438-1161 4. DATE EIA FORM PART I SUBMI'Il'ED: MARCH 30.1992 5. PROJECT DESCRIPTION: ADOPTION OF A CITY-WIDE MASTER DRAINAGE AND STORM WATER OUALITY MANAGEMENT PLAN. ENVIRONMENTAL IMPACTS STATE CEQA GUIDELINES, Chapter 3, Article 5, section 15063 requires that the City conduct an Environmental Impact Assessment to determine if a project may have a significant effect on the environment. The Environmental Impact Assessment appears in the following pages in the form of a checklist. This checklist 8 identifies any physical, biological and human factors that might be impacted by the proposed project and provides the City with information to use as the basis for deciding whether to prepare an Environmental Impact Report or Negative Declaration. * A Negative Declaration may be prepared if the City perceives no substantial evidence that the project or any of its aspects may cause a significant effect on the environment. On the checklist, "NO" will be checked to indicate this determination. * An EIR must be prepared if the City determines that there! is substantial ewidence that any aspect of the project may cause a sinnificant effect on the environment. The project may qualifir for a Negative Declaration however, if adverse impacts are mitigated so that environmental effects can be deemed insimificant. These findings are shown in the checklist under the headings "YES-sig" and "YES-insig" respectively. A discussion of potential impacts and the proposed mitigation measures appears at the end of the form under DISCUSSION OF ENVIRONMENTAL EVALUATION. Particular attention should be given to discussing mitigation for impacts which would otherwise be determined significant. J P - PHYSICAL ENVIRONMENT WILL THE PROPOSAL DIRECTLY OR INDIRECI'L,Y YES (si& 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Result in unstable earth conditions or increase the exposure of people. or property to geologic hazards? Appreciably change the topography or any unique physical features? Result in or be affected by erosion of soils either on or off the site? Result in .changes in the deposition of beach sands, or modification of the channel of a river or stream or the bed of the ocean or any bay, inlet or lake? Result in substantial adverse effects on ambient air quality? Result in substantial changes in air movement, odor, moisture, or temperature? Substantially change the course or flow of water (marine, fresh or flood waters)? Affect the quantity or quality of surface water, ground water or public water supply? Substantially increase usage or cause depletion of any natural resources? Use substantial amounts of fuel or energy? Alter a significant archeological, paleontological or historical site, structure or object? YES NO (insis, X - X .- - -2- BIOLOGICAL ENVIRONMENT WILL THE PROPOSAL DIRECIIY OR INDIRECTLY 12. Affect the diversity of species, habitat or numbers of any species of plants (including trees, shrubs, grass, microflora and aquatic plants)? 13. Introduce new species of plants into an area, or a barrier to the normal replenishment of existing species? 14. Reduce the amount of acreage of any agricultural crop or affect prime, unique or other farmland of state or local importance? 15. Affect the diversity of species, habitat or numbers of any species of animals (birds, land animals, all water dwelling organisms and insects? 16. Introduce new species of animals into an area, or result in a barrier to the migration or movement of animals? x - WILL THE PROPOSAL DIRECTLY OR INDIRECTLY Els E3 NO 17. Alter the present or planned land use of an area? 18. Substantially affect public utilities, schools, police, fire, emergency or other public services? X - -3- HUMANENVIRONMENT WILL THE PROPOSAL DIRECTLY OR INDIRECI'LY lgis 19. 20. 21. 22. 23. 24. 25. 26. 27. 28 29. 30. 31. 32 Result m the need for new or modified sewer systems, solid waste or hazardous waste control systems? Increase existing noise levels? Produce new light or glgre? Involve a significant risk of an explosion or the release of hazardous substances (including, but not limited to, oil, pesticides, chemicals or radiation)? Substantially alter the density of the human population of an area? Affect existing housing, or create a demand for additional housing? Generate substantial additional traffic? Affect existing parking facilities, or create a large demand for new parking? Impact existing transportation systems or alter present patterns of circulation or movement of people and/or goods? Alter waterborne, rail or air traffic? Increase traffic hazards to motor vehicles, bicyclists or pedestrians? Interfere with emergency response plans or emergency evacuation plans? Obstruct any scenic vista or create an aesthetically offensive public view? Affect the quality or quantity of existing recreational opportunities? NO X " - X - 4 MANDATORY FINDINGS OF SIGNIFICANCJi WILL THE PROPOSAL DIRECTLY OR INDIRECTLY YES YES (rig) cig) 33. Does the project have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wild- life species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, reduce the number or restrict the range of a rare or en- dangered plant or animal, or eliminate important examples of the major periods of California history or prehistory. 34. Does the project have the potential to achieve short-term, to the dis- advantage of long-term, environmental goals? (A short-term impact on the environment is one which occurs in a relatively brief, definitive period of time while long-term impacts will endure well into the future.) 35. Does the project have the possible environmental effects which are in- dividually limited but cumulatively considerable? (“Cumulatively con- siderable” means that the incremental effects of an individual project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects.) 36. Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? NO X - -5- . DISCUSSION OF ENWRONMENTK EVALUATION The proposal involves a master plan of all existing and future major drainage facilities and establishment of fee areas to fund major drainage fadty costs. The facilities include underground reinforced concrete pipe, concrete channels, erhanced natural channels, and desiltation basins. Thc document does not, in and of itself, allow development to occur. The future facilities shown in the Master Drainage Plan will be reviewed for potential adverse environmental effects on a case by case basis. As such, the adoption of this Master Drainage and Storm Water Quality Management Plan will not produce any adverse environmental impacts. PHYSICAL ENVIRONMENT 1. 2 3. 4. 5. 6. 7. 8. 9. 10. 11. Since this proposal is a master plan document only, and does not entitle any physical development, no grading will occur and no geologic hazards or unstable earth conditions will result. No change in topography will result fiom this master plan and no unique physical features will be disturbed at this time. Construction of the drainage facilities in this master plan will undergo individual environmental review. No erosion of soils will occur as a result of this 'document and all site specific erosion potential will be evaluated on a project-by-project basis. The proposed drainage master plan will not affect any beach sands, rivers, or stream channels as no physical improvements are proposed at this time. There will not be any adverse effects on ambient air quality since no construction is being proposed at this time. No change in the surface energy and moisture balances will result from this master plan since all improvements listed in this document will undergo individual environmental review. All potential impacts to existing watercourses will be evaluated with each project and incorporated into the design of the future drainage facilities. No impacts will result from this master drainage Plan- No adverse affects to any dace water or ground water resources, or the public water supply will occur since no construction is being condoned at this time. An incremental increase in the consumption of fossil fuels may accompany construction of the drainage facilities, but this will be reviewed during the project specific environmental reviews. See answer no. 9. The potential for the existence of significant archeological, paleontological, or historical structures or objects on future project sites will be reviewed in each project-specific environmental review. The master plan does not, in and of itself, impact any significant features. -6- .- -. BIOLOGICAL ENVIRONMENT 12. 13. 14. 15. 16. Since no site specific development is proposed with this master plan document, the existing diversity of species, habitat or number of plants or animals will not be affected by the adoption of the document. No introduction of new species of plants or animals is proposed with the Master Drainage Plan, therefore no adverse environmental affects are antiapated. No subsequent development referred to in the Drainage Master Plan will occur without subsequent environmental review, therefore any impacts that individual projects may have on agricultural crops or prime farmland will be assessed during future project design. See answer no. 12. See answer no. 13. HUMAN ENVIRONMENT 17. 18. 19. 20. 21. 22. 23. 24. 25. The present land use of the City does not change with the proposed Mater Drainage Plan. The proposed Master Drainage and Storm Water Quality Management Plan was drafted to plan for the future drainage facilities needs. Any affect upon public utilities or public services would be positive as the existing Drainage Plan is in need of revision. The existing sewer and solid waste systems will not be impacted since the proposed Master Drainage Plan deals only with drainage facilities. There may be an incremental increase in noise levels due to construction of the facilities in this document, however those site specific issues will be addressed upon individual project review. No new light or glare sources are proposed as this document does not approve any specific development. The proposed drainage plan proposes no hazardous or explosive substances and all suggested projects will undergo individual environmental review. No residential dwelling units are proposed and, therefore, no significant alteration of human density will result. The Master Drainage Plan does not, in and of itself, displace any existing housing, nor does it create a demand for additional housing. No adverse impacts to the housing supply or demand will result. No traffic will be generated by the proposed drainage facility planning document and, therefore, no impacts to traffic will result. -7- 2 " L 26. 27. 28 29. 30. 31. 32. 33. 34. 35. 36. No existing parking facilities will be affected by the adoption of this plan and no demand for additional parking will occur. No existing transportation systems or patterns of circulation will be affected by the proposal and no adverse impacts to such are anticipated. No waterborne, air, or rail traffic use will be affected by the proposed drainage plan and no adverse impacts to these transportation mediums will occur. AU projects suggested by this document will undergo project specific environmental review to insure that standard safety practices will be implemented during construction and, as such, no traffic.hazards will result with the approval of this document. No emergency response or evacuation plans will be affected by this Master Drainage Plan and all drainage facility projects will be reviewed individually, therefore no impacts to such will occur at this time. Since each project will receive site specific environmental review, and this document does not condone any construction at this time, no scenic vistas or public views will affected. No significant recreational opportunities will be impacted by the proposed facility plan since the improvements suggested in the plan will undergo site specific environmental review that will assess recreational opportunities. No significant fish or wildlife species, habitats, plant communities, or examples of California history will be affected by the approval of the Master Drainage Plan since this document only suggests development and each project will be reviewed.on an individual basis. No short or long term environmental goals are compromised by this document since the document does not allow specific development and all proposed projects will undergo individual scrutiny with regard to both long and short-term environmental goals. All potential impacts related to the proposed Master Drainage Plan are well below the level of significance and do not cumulatively produce significant adverse affects. As discussed above, no significant adverse impacts are anticipated with the proposal, therefore no substantial adverse effects on human beings, either directly or indirectly, are expected to occur. ANALYSIS OF VIABLE ALTERNATIVES TO THE PROPOSED PROJEm SUCH AS: a) Phased development of the project, b) alternate site designs, c) alt-mte scale of development, d) alternate uses for the site, e) development at some future time rather than now, f) alternate sites for the proposed, and g) no project alternative. The document is a City-wide drainage facility planning document, and phasing of drainage facility planning is not a functional alternative. No site designs are proposed at this time therefore no altematives can be evaluated. The scale of each project has been set by the projected facilities needs but is not fixed. Since each project suggested under this plan will be individually reviewed, alternate scales of development will be assessed given all other project specific environmental concerns. The sites identified in the Drainage Mater Plan are typically existing natural drainage features or existing undersized drainage facilities and each site will be reviewed on a site specific basis. Since no development is proposed with this plan, development will be occurring at some future time rather than now. See d) above. The proposed Master Drainage and Stonn Water Quality Management Plan is needed to update the existing plan and to incorporate all portions of the City into one cohesive drainage plan. The no project alternative would allow the existing outdated plan to remain, thus reducing efficiency and prohibiting planning based upon updated facility assessments. -9- DETERMINATION (To Be Completed By The Planning Department) On the basis of this initial evaluation: - X I 5nd the proposed project COULD NOT have a significxlt effect on the environment, and a NEGATIVE UECLARATION will be prepared. - I find that the proposed project COULD NOT have a sisnificant effect on the environment, because the environmental effects of the proposed project have already been considered in conjunction with previously certified environmental documents and no additional environmental review is required. Therefore, a Notice of Determination has been prepared. - I find that although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because the mitigation measures described on an attached sheet have been added to the project. A Conditional Negative Declaration will be proposed. - I find the proposed project MAY have a significant effect on the environment, and an ENVIRONMENTAL IMPAm REPORT is required. Lj-mqz 4- 'z 7-75 Date Date MGh ,rsT MITIGATING MEASURES (IF APPLICABLE~ ATTACH MITIGATION MONITORING PROGRAM (IF APPLICABLE1 -10-