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HomeMy WebLinkAbout2000-04-19; Planning Commission; Resolution 47600 0 1 2 3 4 5 6 7 8 PLANNING COMMISSION RESOLUTION NO. 4760 A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF CARLSBAD, CALIFORNIA, APPROVING A MITIGATED NEGATIVE DECLARATION, ADDENDUM, AND MITIGATION MONITORING AND REPORTING PROGRAM TO CONSTRUCT A SEWER LIFT STATION AND INSTALL SEWER PIPELINES GENERALLY LOCATED SOUTH OF THE AGUA HEDIONDA LAGOON IN LOCAL FACILITIES MANAGEMENT ZONES 13 AND 8. CASE NAME: SOUTH AGUA HEDIONDA INTERCEPTOR CASE NO.: CUP 99-19/ HDP 00-03/ SUP 00-03 - REACH 3 9 10 11 WHEREAS, the Carlsbad Municipal Water District, “Developer,” has filec verified application with the City of Carlsbad regarding property owned by the San Diego G 12 II and Electric Company and the Kelly Land Company, “Owners,” described as 13 14 Properties within the open space and agricultural lands south of the Agua Hedionda Lagoon, north of Cannon Road/the Cannon Road extension, and east of the 1-5 Freeway. 15 16 (“the Property”); and 17 18 20 19 WHEREAS, a Mitigated Negative Declaration, addendum and Mitigat Monitoring and Reporting Program was prepared in conjunction with said project; and WHEREAS, the Planning Commission did on the 19th day of April, 2000, holc duly noticed public hearing as prescribed by law to consider said request; and 21 WHEREAS, at said public hearing, upon hearing and considering all testimc 22 relating to the Mitigated Negative Declaration, addendum and Mitigated Monitoring a 24 considering any written comments received, the Planning Commission considered all fact 23 and arguments, examining the initial study, analyzing the information submitted by staff, 2 26 Reporting Program. 25 27 ll NOW, THEREFORE, BE IT HEREBY RESOLVED by the Plann 28 Commission as follows: A) That the foregoing recitations are true and correct. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 e 0 B) That based on the evidence presented at the public hearing, the Plann Commission hereby APPROVES the Mitigated Negative Declaration a Mitigation Monitoring, addendum and Program, according to Exhibit ”3 dated March 3, 2000, and “PII” dated February 22, 2000, attached hereto made a part hereof, based on the following findings: Findinps: 1. The Planning Commission of the City of Carlsbad does hereby find: A. It has reviewed, analyzed and considered a Mitigated Negative Declaration i Mitigation Monitoring and Reporting Program, the environmental imp2 therein identified for this project and any comments thereon prior APPROVING the project; and B. The Mitigated Negative Declaration has been prepared in accordance VI requirements of the California Environmental Quality Act, the State Guidelir and the Environmental Protection Procedures of the City of Carlsbad; and C. It reflects the independent judgment of the Planning Commission of the City Carlsbad; and D. Based on the EIA Part I1 and comments thereon, there is no substantial evidel the project will have a significant effect on the environment. E. Recirculation of the Negative Declaration is not required pursuant to Secti 15073.5 of the California Environmental Quality Act (CEQA) in that: 1. Mitigation measures are replaced with equal or more effecti measures pursuant to Section 15074.1 of CEQA guidelines; and 2. New project revisions are added in response to written or verl comments on the project’s effects identified in the proposed negati declaration which are not new avoidable significant effects; and 3. Measures or conditions of project approval are added afi circulation of the negative declaration which are not required CEQA, which do not create new significant environmental effects al are not necessary to mitigate an avoidable significant effect; and 4. New information is added to the negative declaration which mer6 clarifies, amplifies, or makes insignificant modifications to t negative declaration. ... PC RES0 NO. 4760 -2- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 0 0 PASSED, APPROVED AND ADOPTED at a regular meeting of the Plann Commission of the City of Carlsbad, California, held on the 19th day of April, 2000, by following vote, to wit: AYES: Chairperson Compas, Commissioners Baker, Heineman, L’Heureux, and Nielsen NOES: ABSENT: Commissioners Segall and Trigas ABSTAIN: CARLSBAD PLANNING COMMISSION ATTEST: ” MICHAEL J. HOLZM~ER Planning Director PC RES0 NO. 4760 -3- 0 0 ENVIRONMENTAL IMPACT ASSESSMENT FORM - PART I1 (TO BE COMPLETED BY THE PLANNING DEPARTMENT) CASE NO: CUP 99-19/HDP OO-O3/SUP 00-03 DATE: February 22,2000 BACKGROUND 1. CASE NAME: South Aaua Hedionda InterceDtor (SAHI) Reach 3 2. APPLICANT: City of Carlsbad 3. ADDRESS AND PHONE NUh4BER OF APPLICANT: 1635 Faraday Ave Carlsbad CA 92008- 7314 (760) 602-4619 4. DATE EIA FORM PART I SUBMITTED: January 14,2000 5. PROJECT DESCRIPTION: The project is the construction of an addition to the City’s wastewater collection system and is known as South Agua Hedionda Interceptor Reach 3, or “SAHI 3”. SAHI 3 would connect pipelines within the Cannon Road right-of-way, which were, or will be, installed under previously authorized projects (i.e. SAHI2, SAHI4 and SAHIT3B). SAHI 3 is located in the agricultural and open space areas south of the Agua Hedionda Lagoon and north of Cannon Road. More specifically, the project involves installation of pipelines and the construction of a lift station. Over one mile, or approximately 5,950 lineal feet, of underground pipeline would be installed. The pipeline will be aligned in an easdwest direction, connecting an existing pipeline located near the intersection of Cannon Road and Car Country Drive with an existing pipeline, and an approved but not yet installed pipeline, at the planned intersection of the Cannon Road extension and “Street AA” of the proposed Kelly Ranch project. The pump station site would be located approximately 820 feet southwest of the Cannon Road/Street AA intersection, and 350 feet northwest of the Agua Hedionda Lagoon Nature Center. The lift station would be above grade and in an area immediately adjacent to a dirt access road which also serves as a public recreation trail. (See Figures 2 and 3). Creation of a proposed, 14,000 +/- square foot, level pad area for the lift station will necessitate the grading of a sloping, natural area and the installation of a retaining wall as high as 20 feet. It is estimated that approximately 12,200 cubic yards of earth will be excavated as part of the grading operation. Three different methods will be used for pipeline installation along the pipeline route. For the 850 lineal foot segment from the Cannon/Hidden Valley Road intersection to the lift station site, which is inhabited by native vegetation and contains wetlands, the pipeline will be installed via micro tunneling. For the 2,450 lineal foot segment which is also inhabited by native vegetation, contains wetlands, and spans from the pump station site to a spot along the outside edge of an agricultural area, the pipeline will be installed via directional drill. The micro tunneling and directional drilling technology both will involve minimal disruption to surface topography and vegetation. For the remaining 2,650 lineal foot segment through the agricultural area to the Cannon Road Car County Drive intersection, the pipeline would be installed via the conventional, open trenching method. A more detailed project description and description of the environmental setting is included in the Discussion of Environmental Evaluation section. 1 Rev. 03/28/96 e 0 SUMMARY OF ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED: The summary of environmental factors checked below would be potentially affected by this project, involving at least one impact that is a “Potentially Significant Impact,” or “Potentially Significant Impact Unless Mitigation Incorporated” as indicated by the checklist on the following pages. H Land Use and Planning TransportatiodCirculation 17 Public Services [7 Population and Housing (XI Biological Resources 0 Utilities & Service systems B Geological Problems 0 Energy & Mineral Resources (XI Aesthetics H water Hazards B Cultural Resources Air Quality 0 Noise Recreation 0 Mandatory Findings of Significance 2 Rev. 03/28/96 e 0 ~ DETERMINATION. (To be completed by the Lead Agency) I find that the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION will be prepared. B 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 MITIGATED NEGATIVE DECLARATION will be prepared. I u I find that the proposed project MAY have a significant effect on the environment, and an ENVIRONMENTAL IMPACT REPORT is required. I u I find that the proposed project MAY have significant effect(s) on the environment, but at least one potentially significant effect 1) has been adequately analyzed in an earlier document pursuant to applicable legal standards, and 2) has been addressed by mitigation measures based on the earlier analysis as described on attached sheets. An is required, but it must analyze only the effects that remain to be addressed. 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 all potentially significant effects (a) have been analyzed adequately in an earlier pursuant to applicable standards and (b) have been avoided or mitigated pursuant to that earlier, including revisions or mitigation measures that are imposed upon the proposed project. Therefore, a Notice of Prior Compliance has been prepared. zl\ Icw Date 3! L /m Date 3 Rev. 03/28/96 0 0 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 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 (EIR), Negative Declaration, or to rely on a previously approved EIR or Negative Declaration. e A brief explanation is required for all answers except “No Impact” answers that are adequately supported by an information source cited in the parentheses following each question. A “No Impact” answer is adequately supported if the referenced information sources show that the impact simply does not apply to projects like the one involved. A “No Impact” answer should be explained when there is no source document to refer to, or it is based on project-specific factors as well as general standards. e “Less Than Significant Impact” applies where there is supporting evidence that the potential impact is not adversely significant, and the impact does not exceed adopted general standards and policies. e “Potentially Significant Unless Mitigation Incorporated” applies where the incorporation of mitigation measures has reduced an effect from “Potentially Significant Impact” to a “Less Than Significant Impact.” The developer must agree to the mitigation, and the City must describe the mitigation measures, and briefly explain how they reduce the effect to a less than significant level. e “Potentially Significant Impact” is appropriate if there is substantial evidence that an effect is significant. e Based on an “EIA-Part 11”, if a proposed project could have a potentially significant effect on the environment, but & potentially significant effects (a) have been analyzed adequately in an earlier EIR or Mitigated Negative Declaration pursuant to applicable standards and (b) have been avoided or mitigated pursuant to that earlier EIR or Mitigated Negative Declaration, including revisions or mitigation measures that are imposed upon the proposed project, and none of the circumstances requiring a supplement to or supplemental EIR are present and all the mitigation measures required by the prior environmental document have been incorporated into this project, then no additional environmental document is required (Prior Compliance). e When “Potentially Significant Impact” is checked the project is not necessarily required to prepare an EIR if the significant effect has been analyzed adequately in an earlier EIR pursuant to applicable standards and the effect will be mitigated, or a “Statement of Overriding Considerations” has been made pursuant to that earlier EIR. e 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. 4 Rev. 03/28/96 0 0 0 If there are one or more potentially significant effects, the City may avoid preparing an EIR if there are mitigation measures to clearly reduce impacts to less than significant, and those mitigation measures are agreed to by the developer prior to public review. In this case, the appropriate “Potentially Significant Impact Unless Mitigation Incorporated” may be checked and a Mitigated Negative Declaration may be prepared. An EIR must be prepared if “Potentially Significant Impact” is checked, and including but not limited to the following circumstances: (1) the potentially significant effect has not been discussed or mitigated in an Earlier EIR pursuant to applicable standards, and the developer does not agree to mitigation measures that reduce the impact to less than significant; (2) a “Statement of Overriding Considerations” for the significant impact has not been made pursuant to an earlier EIR; (3) proposed mitigation measures do not reduce the impact to less than significant, or; (4) through the EIA-Part I1 analysis it is not possible to determine the level of significance for a potentially adverse effect, or determine the effectiveness of a mitigation measure in reducing a potentially significant effect to below a level of significance. 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. 5 Rev. 03/28/96 0 0 Issues (and Supporting Information Sources). I. LAND USE AND PLANNING. Would the proposal:. a) Conflict with general plan designation or zoning? (Source #(s): (#l, #2, #3, #6:Pgs 5.6-1 - 5.6-18, #7, b) Conflict with applicable environmental plans or policies adopted by agencies with jurisdiction over the project? (#2, #3, #5, #6:Pgs 5.6-1 - 5.6-18, #7, #8, #9, #lo, #11, #14, #16) c) Be incompatible with existing land use in the vicinity? d) Affect agricultural resources or operations (e.g. impacts to soils or farmlands, or impacts from incompatible land uses? (#l, #6:Pgs 5.6-1 - 5.6-18, #7, #8, #9, #lo, e) Disrupt or divide the physical arrangement of an established community (including a low-income or minority community)? (#6:Pgs 5.6-1 - 5.6-18, #7, #lo, #lo, #11) (#2, #3, #5, #6:Pg~ 5.6-1 - 5.6-18, #7, #lo, #11, #12) #11, #12) #11, #12) Potentially Significant Impact o I7 0 0 Potentially Significant Unless Mitigation Incorporated 0 lxl IXI 0 0 Less Than No Significant Impact Impact OH no no [XI0 OH 11. POPULATION AND HOUSING. Would the proposal: a) Cumulatively exceed official regional or local population projections? (#2, #3, #5, #6:Pgs 5.5-1 - 5.5- 6, #lo, #11) b) Induce substantial growth in an area either directly or indirectly (e.g. through projects in an undeveloped area or extension of major infrastructure)? (#2, #3, #6:Pgs c) Displace existing housing, especially affordable 0 0 OH 0 0 OH 0 0 OH 5.5-1 - 5.5-6, #7, #11, #12) housing? (#6:Pgs 5.5-1 - 5.5-6, #7 #11) 111. GEOLOGIC PROBLEMS. Would the proposal result in or expose people to potential impacts involving: a) Fault rupture? (#2, #3, #6:Pgs 5.1-1 - 5.1-15, #lo, #11, #13) b) Seismic ground shaking? (#2, #3, #6:Pgs 5.1-1 - 5.1- 15, #lo, #11, #13) c) Seismic ground failure, including liquefaction? (#2, #3, d) Seiche, tsunami, or volcanic hazard? (#6:Pgs 5.1-1 - e) Landslides or mudflows? (#2, #3, #6:Pgs 5.1-1 - 5.1- 15, #lo, #11, #13) f) Erosion, changes in topography or unstable soil conditions from excavation, grading, or fill? (#l, #2, #3, #6:Pgs 5.1-1 - 5.1-15, #lo, #11, #13, #14) g) Subsidence of the land? (#2, #3, #6:Pgs 5.1-1 - 5.1-15, #lo, #11, #13) h) Expansive soils? (#2, #3, #6:Pgs 5.1-1 - 5.1-15, #lo, #11, #13) i) Unique geologic or physical features? (#2, #3, #5, #6:Pg~ 5.1-1 - 5.1.15, #lo, #11, #13) 5.1-15, #lo) #6:Pg~ 5.1-1 - 5.1-15, #11, #13, #17) 0 0 0 0 0 0 0 0 0 0 H I7 0 OH OH om OH OH 00 OH OBI OBI 6 Rev. 03/28/96 0 IV. WATER. Would the proposal result in: a) Changes in absorption rates, drainage patterns, or the rate and amount of surface runoff! (#2, #3, #5, #6:Pgs b) Exposure of people or property to water related hazards such as flooding? (#6:Pgs 5.2-1 - 5..2-11) c) Discharge into surface waters or other alteration of surface water quality (e.g. temperature, dissolved oxygen or turbidity)? (#l, #5, #6:Pgs 5.2-1 - 5..2-11, #13, #14) d) Changes in the amount of surface water in any water e) Changes in currents, or the course or direction of water movements? (#I, #2, #3, #5, #6:Pgs 5.2-1 - 5..2-11, #13) 0 Changes in the quantity of ground waters, either through direct additions or withdrawals, or through interception of an aquifer by cuts or excavations or through substantial loss of groundwater recharge capability? (#l, #2, #3, #5, #6:Pgs 5.2-1 - 5..2-11, #IO, #11, #13) g) Altered direction or rate of flow of groundwater? (#l, h) Impacts to groundwater quality? (#l, #5, #6:Pgs 5.2-1 - 5..2-11, #7, #13, #14) i) Substantial reduction in the amount of groundwater otherwise available for public water supplies? (#l, #5, 5.2-1 - 5..2-11, #lo, #11, #13, #14) body? (#l, #2, #5, #6:Pgs 5.2-1 - 5..2-11, #11, #13) #2, #3, #5, #6:Pgs 5.2-1 - 5..2-11, #lo, #11, #13, #14) #6:Pgs 5.2-1 - 5..2-11, #13, #14) V. AIR QUALITY. Would the proposal: a) Violate any air quality standard or contribute to an existing or projected air quality violation? (#l, #5, b) Expose sensitive receptors to pollutants? (#l, #3, #5, #6:Pgs 5.3-1 - 5.3-12, #13) c) Alter air movement, moisture, or temperature, or cause any change in climate? (#l, #6:Pgs 5.3-1 - 5.3-12) d) Create objectionable odors? (#l, #6:Pgs 5.3-1 - 5.3-12, #13) #6:Pgs 5.3-1 - 5.3-12, #13, #17) VI. TRANSPORTATION/CIRCULATION. Would the a) Increased vehicle trips or traffic congestion? (#l, b) Hazards to safety from design features (e.g. sharp curves or dangerous intersections) or incompatible uses (e.g. farm equipment)? (#6:Pgs 5.7-1 - 5.7.22) c) Inadequate emergency access or access to nearby uses? d) Insufficient parking capacity on-site or off-site? (#l, e) Hazards or barriers for pedestrians or bicyclists? (#l, f) Conflicts with adopted policies supporting alternative transportation (e.g. bus turnouts, bicycle racks)? (#l, #6:Pgs 5.7-1 - 5.7.22, #11) g) Rail, waterborne or air traffic impacts? (#l, #6:Pgs 5.7- proposal result in: #6:Pgs 5.7-1 - 5.7.22, #lo) (#6:Pgs 5.7-1 - 5.7.22, #IS) #6:Pgs 5.7-1 - 5.7.22, #13) #6:Pgs 5.7-1 - 5.7.22, #lo, #11, #13) 1 - 5.7.22, #11, #13) 7 0 0 0 0 Ixl 0 0 0 0 IXI 0 0 Kl 0 0 0 0. 0 Ixl I7 0 0 0 0 mu om no UKI ON on om on OH NU ON OH nu ON OH UKI OKI om 01sI nIxI Rev. 03/28/96 0 VII. BIOLOGICAL RESOURCES. Would the proposal result in impacts to: a) Endangered, threatened or rare species or their habitats (including but not limited to plants, fish, insects, animals, and birds? (#6:Pgs 5.4-1 - 5.4-24) b) Locally designated species (e.g. heritage trees)? c) Locally designated natural communities (e.g. oak forest, coastal habitat, etc.)? (#6:Pgs 5.4-1 - 5.4-24) d) Wetland habitat (e.g. marsh, riparian and vernal pool)? e) Wildlife dispersal or migration corridors? (#6:Pgs 5.4-1 (#6:Pgs 5.4-1 - 5.4-24) (#6:Pg~ 5.4-1 - 5.4-24) - 5.4-24) VIII. ENERGY AND MINERAL RESOURCES. Would the a) Conflict with adopted energy conservation plans? (#l, proposal? #6:Pg~ 5.12.1-1 - 5.12.1-5 & 5.13-1 - 5.13-9, #7, #lo, #11, #13) b) Use non-renewable resources in a wasteful and inefficient manner? (#l, #6:Pgs 5.12.1-1 -5.12.1-5 & c) Result in the loss of availability of a known mineral resource that would be of future value to the region and the residents of the State? (#l, #6:Pgs 5.12.1-1 - 5.12.1- 5 & 5.13-1 - 5.13-9, #7, #lo, #11) 5.13-1 - 5.13-9, #7, #lo, #11) IX. HAZARDS. Would the proposal involve: a) A risk of accidental explosion or release of hazardous substances (including, but not limited to: oil, pesticides, chemicals or radiation)? (#l, #5, #6:Pgs 5.10.1-1 - b) Possible interference with an emergency response plan or emergency evacuation plan? (#6:Pgs 5.10.1- 1 - c) The creation of any health hazard or potential health d) Exposure of people to existing sources of potential e) Increase fire hazard in areas with flammable brush, 5.10.1-5, #13, #14) 5.10.1-5) hazards? (#l, #5, #6:Pgs 5.10.1-1 - 5.10.1-5, #13, #14) health hazards? (#6:Pgs 5.10.1-1 - 5.10.1-5) grass, or trees? (#l, #6:Pgs 5.10.1-1 - 5.10.1-5) X. NOISE. Would the proposal result in: a) Increases in existing noise levels? (#l, #6:Pgs 5.9-1 - b) Exposure of people to severe noise levels? (#l, #6:Pgs 5.9-15, #7, #11) 5.9-1 - 5.9-15, #7, #11) XI. PUBLIC SERVICES. Would the proposal have an effect upon, or result in a need for new or altered government services in any of the following areas: a) Fire protection? (#6:Pgs 5.12.5-1 - 5.12.5-6) b) Police protection? (#6:Pgs 5.12.6-1 - 5.12.6-4) C) Schools? (#6:Pg~ 5.12.7.1 - 5.12.7-5) d) Maintenance of public facilities, including roads? (#l, #2, #lo) 8 0 0 [I] 0 0 o 0 0 0 0 I7 0 0 0 [XI lxl Ell IXI 0 0 0 0 El 0 [XI 0 0 0 I7 0 0 0 on an on on mu OH OH uIxI nu OH no UKI om om om n[XI ON UKI OH Rev. 03/28/96 0 0 e) Other governmental services? (#6:Pgs 5.12.1-1 - 5.12.8-7) 0 nIx1 XII.UTILITIES AND SERVICES SYSTEMS. Would the proposal result in a need for new systems or supplies, or substantial alterations to the following utilities: a) Power or natural gas? (#l, #6:Pgs 5.12.1-1 - 5.12.1-5 & 5.13-1 - 5.13-9. #11) 0 0 UIXI b) c) 4 e) f) g> ,, 0 0 17 Ix1 IxI 0 Communications systems? (#l, #6, #11) Local or regional water treatment or distribution facilities? (#l, #6:Pgs 5.12.2-1 - 5.12.3-7, #11) Sewer or septic tanks? (#6:Pgs 5.12.3-1 - 5.12.3-7) Storm water drainage? (#6:Pg 5.2-8) Solid waste disposal? (#6:Pgs 5.12.4-1 - 5.12.4-3) Local or regional water supplies? (#6:Pgs 5.12.2-1 - 5.12.3-7) 0 0 0 I7 0 0 0 17 0 0 I7 151 I8 E! XIII. AESTHETICS. Would the proposal: a) Affect a scenic or vista or scenic highway? (#6:Pgs b) Have a demonstrated negative aesthetic effect? (#6:Pgs c) Create light or glare? (#6:Pgs 5.11-1 - 5.11-5) 5.11-1 - 5.11-5) 0 [XI on 5.11-1 - 5.11-5) 0 IxI on 0151 XIV. CULTURAL RESOURCES. Would the proposal: a) Disturb paleontological resources? (#6:Pgs 5.8-1 - 5.8- b) Disturb archaeological resources? (#6:Pgs 5.8-1 - 5.8- c) Affect historical resources? (#6:Pgs 5.8-1 - 5.8-10) d) Have the potential to cause a physical change which would affect unique ethnic cultural values? (#2, #6:Pgs e) Restrict existing religious or sacred uses within the 1 0) 10) 5.8-1 - 5.8-10) potential impact area? (#2, #6:Pgs 5.8-1 - 5.8-10) XV. RECREATIONAL. Would the proposal: a) Increase the demand for neighborhood or regional parks or other recreational facilities? (#6:Pgs 5.12.8-1 - b) Affect existing recreational opportunities? (#6:Pgs 5.12.8-7) 5.12.8-1 - 5.12.8-7) XVI. MANDATORY FINDINGS OF SIGNIFICANCE. a) Does the project have the potential to degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife 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 endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? 17 IXI [XI 00 nu 0 0 0 0 UBI OB 0 OIXI 0 0151 [XI0 0 0 [XI on 9 Rev. 03128196 e 0 ~ b) Does the project have impacts that are individually limited, but cumulatively considerable? 0 I7 (“Cumulatively considerable” means that the incremental effects of a 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)? c) Does the project have environmental effects which will cause the substantial adverse effects on human beings, 17 0 either directly or indirectly? 0 la la XVII. EARLIER ANALYSES. Earlier analyses may be used where, pursuant to the tiering, program EIR, or other CEQA process, one or more effects have been adequately analyzed in an earlier EIR or negative declaration. Section 15063(c)(3)(D). In this case a discussion should identify the following on attached sheets: a) Earlier analyses used. Identify earlier analyses and state where they are available for review. b) Impacts adequately addressed. Identify which effects from the above checklist were within the scope of and adequately analyzed in an earlier document pursuant to applicable legal standards, and state whether such effects were addressed by mitigation measures based on the earlier analysis. c) Mitigation measures. For effects that are “Less than Significant with Mitigation Incorporated,“ describe the mitigation measures which were incorporated or refined from the earlier document and the extent to which they address site- specific conditions for the project. 10 Rev. 03/28/96 a a DISCUSSION OF ENVIRONMENTAL EVALUATION Project Description The project is an addition to the City’s wastewater collection system and is generally located in the northwest section of the City of Carlsbad. (See Figure 1 - Regional Setting). More specifically, the project involves the construction and operation of an interceptor sewer main and lift station connecting segments of the South Agua Interceptor Sewer in Cannon Road and across Macario Canyon (See Figure 2 - Project Location). Connecting segments of the sewer to the east and west are constructed or will be constructed as part of previously approved projects in the right-of-way of Cannon Road. The proposed project is a modification to an existing approved project, which includes supporting environmental documentation, for a segment of the South Agua Hedionda Interceptor Sewer System in Reach SAH3 of the City of Carlsbad (EIRs 87-02, 83-4A, 83-04). Earlier documents considered installation of a 30-inch sewer pipeline from El Camino Real running westward in the routes of Cannon Road and Hidden Valley Road and across Macario Canyon at its mouth near Agua Hedionda Lagoon. The pipeline would continue along the south margin of the lagoon for about 1,800 feet, then turn away from the lagoon and up the slope south of the lagoon into the agricultural fields south of the lagoon and continue to rejoin Cannon Road east of Paseo del Norte. The sewer would continue westward in Cannon Road to connect with a trunk line west of Interstate 5 (1-5). The sewer interceptor would be a gravity line from El Camino Real to Macario. A lift station was proposed either east or west of Macario Canyon, and the interceptor from the lift station west would be a force main. The earlier project was reevaluated by CMWD for the present proposal. The reevaluation included several alternatives including lift station location alternatives and methods of constructing the pipelines. The presently proposed project was chosen because, of all the alternatives evaluated, it would have the smallest degree of impact on biological resources and would avoid any impacts to wetlands associated with the lagoon. L$t Station The lift station would be east of the mouth of Macario Canyon on the southern border of Agua Hedionda Lagoon, in an upland area adjacent to the lagoon wetlands (see Figure 3). Construction access to the site and access to the completed lift station would be by way of Hidden Valley Road from the Hidden Valley Roadcannon Road junction. The access road would be paved and would be in the present location of a dirt access roadpublic recreation trail, which is on an existing dike in the lagoon wetlands. The grading for the lift station would not extend toward the lagoon wetlands beyond the existing bare area of Hidden Valley Road, and a retaining wall on the upland side of the lift station site would be included to limit impacts to upland vegetation. The lift station would have an initial peak capacity of 3.0 mgd. A lift station of that size would require the following: 0 A below-ground, reinforced concrete dry welVwet well approximately 45 feet long by 35 feet wide. 11 Rev. 03/28/96 e a An above-ground electrical and standby generator building as tall as 26 feet with maximum dimensions of 60 by 40 feet. An above-ground odor-control facility mounted on a reinforced concrete pad about 30 feet long and 20 feet wide, including on-site space for chemical storage tanks. An above-ground SDG&E transfonner/service meter on a concrete pad about 10 feet square. Equipment for chemical addition will be added for control of downstream force main odor. Gravity Sewer Main to L$t Station The gravity main from Cannon Road to the pump station would be constructed by microtunneling in approximately a straight line from a working pit in the Cannon Road alignment to a receiving pit at the lift station. The 24-inch-diameter pipeline would be under the area of lagoon wetland east of the Hidden Valley Road dike. Microtunneling is a trenchless technology in which the pipeline is constructed between a working pit and a another working pit, or a “receiving” pit without disturbing the ground surface. The working pit would be about 30 feet by 50 feet and would be entirely within the area to be disturbed by construction of the lift station. The receiving pit would be about 20 feet by 20 feet. If Cannon Road is not constructed when the sewer main is constructed, the jacking pit would be in the proposed traveled way of Cannon Road. If Cannon Road is constructed, the jacking pit would be in the right-of-way of Cannon Road, outside the paved traveled way. The receiving pit will be filled in when construction of the pipeline is complete. Force Main Westerly from Lift Station From the lift station location westerly under the lagoon wetlands and up the slope south of the lagoon into the agricultural upland area, the force main would be constructed by directional dnlling. Like microtunneling, directional drilling is a trenchless technology in which a boring machine drills below the surface from a working pit to another working pit or a pit. At the receiving pit, pipe is laid out and then pulled through the bore. For the force main, the jacking pit, about 60 feet by 60 feet in area, would be located in the agricultural field approximately 2,700 feet west of the lift station site. The pipe layout string would be in the alignment of Cannon Road and Hidden Valley Road. Two 18-inch-diameter pipelines would be pulled through the bore. One pipeline would be the functioning force main, the other would be an emergency backup in case of failure of the first. From the jacking pit westerly, the pipeline would be constructed as a single 18-inch-diameter force main in an open trench through the agricultural fields and in the alignment of Cannon Road, now under construction in this area. Construction Phasing Construction would begin with the excavation of the dnlling and jacking pits, microtunneling and directional drilling, and installation of those segments of the pipelines. Hidden Valley Road across the dike from Cannon Road to the lift station site would be used for construction access to the lift station site. With the pipelines to and from the lift station in place, the receiving pits would be filled in, and the open-trench pipeline on the west and the lift station would be constructed. Once all the pipelines are installed and the working pits have been filled construction of the lift station would begin. Total construction time is expected to be a maximum of 18 months. 12 Rev. 03/28/96 e 0 Related Projects Related City of Carlsbad projects include the construction of Cannon Road from just east of Car Country Drive to the east side of Macario Canyon, including the bridge across Macario Canyon (Reach I). Construction of Reach 1 has begun. The force main in Cannon Road to the west is included in the Reach 1 project. Also, as part of development plans for Kelly Ranch, Cannon Road is being constructed from the east side of Macario Canyon to El Camino Real (Reach 2). The gravity sewer line from an existing sewer in El Camino Real to the junction of Hidden Valley Road with Cannon Road is included in that project. Environmental Impact Discussion I. Land Use and Planning b) The project is located within the Agua Hedionda Lagoon section of the City’s Coastal Zone. For projects in this section, the California Coastal Commission has retained responsibility for determining compliance with the City’s Local Coastal Program (LCP) and permitting authority. Since the City does not have permitting authority in this instance and, as a result, has not determined LCP compliance, a potential for significant impact may exist unless mitigation is incorporated. A mitigation measure has been incorporated into the project which involves a requirement that the project receive approval of the California Coastal Commission for a Coastal Development Permit, where LCP compliance would be determined prior to the issuance of any City-issued Notice to Proceed. c) The project is located in an area of special visual and environmental significance. Important environmental resources, the Agua Hedionda Lagoon Nature Center, and a public recreation trail are all in close proximity to the project site. Installation of lift station and pipelines are a potentially incompatible land use, unless mitigation is incorporated. A number of mitigation measures relating to geology, hydrology, biology, cultural resources, and aesthetics are addressed and discussed in the following sub-sections of this checklist and have been incorporated into the project. Additional mitigation involves requiring the project to complete the City’s conditional use and hillside development permitting process where, through discretionary review by the Planning Commission at a public hearing, additional project conditions, beyond identified mitigation measures, may be required to make the project more compatible with surrounding uses. d) A portion of the pipeline is proposed to bisect existing agricultural lands. Agricultural resources will be temporarily impacted as a result of pipeline installation. Impacts are only temporary since the earth above the underground pipelines, which is of an adequate depth, will not be precluded from agricultural use. 111. Geology f) The lift station component of the project will involve the excavation of approximately 12,200 cubic yards of earth, the creation of some manufactured slope area, and the installation of retaining walls as high as 20 feet. Such activity and installations will alter topography and could cause erosion unless mitigated. Mitigation measures have been incorporated into the project requiring compliance with the City’s erosion control and National Pollution Discharge Elimination System (NPDES) standards which will be ensured through the City’s planchecking process. Additionally, erosion and visual impact issues will be hrther 13 Rev. 03/28/96 m 0 addressed through the City’s hillside development permitting process where compliance with the City’s hillside development standards will be ensured, which is also a mitigation measure for the project. The project also involves the installation of approximately 5,950 lineal feet of pipeline which can alter topography and cause erosion, unless mitigated. More than half, or 3,300 lineal feet, of the total lineal feet proposed would be through environmentally sensitive, natural open space areas. To mitigate potential impacts for this portion of pipeline route, installation of pipeline will be conducted via “directional drilling” or “micro tunneling”. These methods are trenchless technologies which involve minimal disruption to surface topography and vegetation and result in minimal soil erosion. A mitigation measure has been incorporated into the project accordingly. The remaining portion of pipeline is proposed through a relatively flat agricultural area. As such, alteration of topography along this portion of the pipeline route will be minimal. A potential for soil erosion does exist, however, and can be mitigated through adherence with the City’s erosion control and NPDES standards, which are required of the project and will be ensured through the City’s plan checking process. The creation of “working pits” for pipeline installation are proposed idon the agricultural area, the pump station site, or the Cannon Road construction site. Therefore, no additional impacts are expected, and no additional mitigation measures are needed, beyond those identified within this sub-section. IV. Water a) Since the pipelines are proposed to be installed underground, increased runoff or changes in drainage patterns are not expected with the pipeline component of the project. Installation of impervious surfaces associated with the pump station component (i.e. a building enclosure and paved areas for parking and access), however, will result in decreased absorption rates and increased run off as measured against existing conditions. Given the relatively small size of the area and that the project will comply with City erosion control and NPDES standards, however, the impacts are expected to be less than significant. c) Potential soil erosion resulting from project construction and potential failure of the lift stationhewage spills could impact surface waters and water quality, particularly in the Agua Hedionda Lagoon. As indicated in the above sub-sections, potential soil erosion can be mitigated through adherence with the City’s erosion control and NPDES standards, which are required of the project and will be ensured through the City’s plan checking process. With regard to potential lift station failure and sewage spills, the project has incorporated a number of design features specifically to address this issue. They include features such as back-up pumps, emergency generators, and alarm systems. Additional mitigation is desired and involves the submittal of report which outlines, in detail, project design features, as well as operation measures, which will be incorporated into the project design and its operation which ensure that pump failure will not result in impacts to water resources. f) Groundwater is relatively near the surface in the vicinity of the lagoon. Excavation for the working pits and for the lift station could encounter groundwater. If so, dewatering of the construction area may be required, which could result in impacts unless mitigated. A mitigation measure has been incorporated into the project which requires a permit from the 14 Rev. 03/28/96 * * Regional Water Quality Control Board (RWQCB), through which conditions will be designed by the RWQCB to prevent excessive dewatering and adverse water quality effects on groundwater. h) See responses to sub-sections IV c and f . V. Air Quality a) The lift station will operate on electricity. In case of power failure, however, a backup generator will be used which is powered by an internal combustion engine. Its use will require a permit from the San Diego Air Pollution Control District where it will be ensured that the project meets all federal, state, and local air quality regulations. Therefore, impacts are expected to be less than significant. d) The project does not involve sewage treatment. It does, however, involve sewage conveyance and could result in the creation of a relatively minor degree of objectionable odor as it passes through the lift station. Even though the lift station is remotely located it is immediately adjacent to a public trail and near the Agua Hedionda Lagoon Nature Center, and prevailing winds could carry odors towards planned residential uses to the west and southwest of the project site. Mitigation has been incorporated into the project design and involves the full enclosure of the lift station within a structure, and the use of chemical treatment to minimize odors. Additional mitigation is desired and involves the submittal of report which outlines, in detail, project design features or treatments, as well as operation measures, which will be incorporated into the project design and its operation which ensure that objectionable odors will be controlled. VII. Biological Resources a) Based on a biological technical report prepared for the project, clearing for construction of the lift station would impact coastal sage scrub, valley needle grass and non-native grasslands. Approximately 0.45 acre of Diegan coastal sage scrub will be impacted which is known habitat for the coastal California gnatcatcher (Polioptila californica californica), a federally listed threatened species and a CDFG species of special concern. Mitigation at a ratio of 2:l is required for impacts to the subject area, which is considered occupied habitat. Additionally, the project would affect foraging habitat for the white-tailed kite (Elanus leucurus), which was observed foraging over the coastal sage scrub and coastal salt marsh habitats on the project site, and native and non-native grassland. The white-tailed kite is a California fully protected species. Overall, the project will affect 0.45 acre of coastal sage scrub, 0.1 1 acre of valley needlegrass grassland, and 0.1 1 acre of nonnative grassland. Mitigation measures for impacts to these species and their habitats have been incorporated into the project. They include requirements for the restoration and/or preservation of similar habitat, at appropriate ratios, on- or off-site; clearances from the US Fish and Wildlife Service and the State of California Department of Fish and Game; the presence of an on-site biologist during construction, and other measures. It is envisioned that mitigation for impacts to coastal sage scrub will be achieved on-site or immediately adjacent, through restoration of a non-native grasslands area to coastal sage scrub adjacent to the pump station site. For impacts to valley needle grass and non-native grasslands, mitigation would be achieved through restoration and or preservation of lands in the Lake Calavera Mitigation Bank. 15 Rev. 03/28/96 0 0 Southern coastal salt marsh in the lagoon wetlands is habitat for Belding’s savannah sparrow (Passerculus sandwichensis beldingi), which is listed by CDFG as endangered. The proposed project would not affect any habitat for this species. As indicated earlier, more than half, or 3,300 lineal feet, of the total lineal feet of proposed pipeline would be through environmentally sensitive, natural and sloping open space areas. To mitigate potential impacts for this portion of pipeline route, installation of pipeline will be conducted via “directional drilling” or “micro tunneling”. These methods are trenchless technologies which involve minimal disruption to surface topography and vegetation. A mitigation measure has been incorporated into the project, accordingly. b) The City of Carlsbad’s Habitat Management Plan for Natural Communities identifies valley needle grass and non-native grasslands as locally important natural resources. The project will result in he disruption of these areas and will need to be mitigated. See discussion in sub-section VI1 a. c) See discussion in sub-sections VI1 a and b. d) As indicated earlier, the project will involve the installation of approximately 3,300 lineal feet of pipeline through environmentally sensitive natural open space areas, some of which are wetlands. In evaluation of project alternatives (which included alternatives such as the use of open trenching for pipeline installation along the entire pipeline route) the CMWD selected a pipeline installation technique which was the least impacting to the environment, the wetlands area in particular. To mitigate potential impacts for this portion of pipeline route, installation of pipeline will be conducted via “directional drilling” or “micro tunneling”. These methods are trenchless technologies which involve minimal disruption to surface topography and vegetation. A mitigation measure has been incorporated into the project accordingly. e) The project area has high value as a wildlife movement corridor. However, the project is primarily underground (i.e. the pipelines), creates a relatively small area of permanent impacts, and involves a relatively low level of activity once construction is completed. Therefore, impacts are considered to be less than significant. IX. Hazards a) The potential failure of the lift station could result in the release of hazardous material (i.e. untreated sewage) into the environment which could adversely impact public health, unless mitigated. Mitigation measures have been incorporated into the project. See discussion in sub-section IV c. c) See sub-section IV c for discussion. XII. Utilities and Service Systems c) The project will provide for the conveyance of sewage to the Encina Waste Water treatment facility which serves the City of Carlsbad and surrounding areas. The sewage conveyed via the proposed project is not expected to significantly impact the Encina Watewater Treatment facility since Encina has been designed to accommodate increased flows. 16 Rev. 03/28/96 0 0 XIII. Aesthetics a) The project is located in a natural open space area adjacent to the Agua Hedionda Lagoon, which is considered to exhibit high scenic quality. Aspects of the project possess the potential to adversely impact important scenic vistas and/or have a negative aesthetic effect, unless mitigated. Pipelines associated with the project will be installed under ground and therefore are not expected to have a long term adverse visual impact. The lift station site/structure, however, will be visible from important public areas such as the Agua Hedionda Lagoon Nature Center and a public recreational trail and certain public streets. Mitigation has been incorporated into the project and involves 1) enclosure of the lift station with a structure 2) the use of appropriate exterior building materials and/or finishes which would assist in blending the installation in with the surrounding natural environment, 3) creation of an earthen screening berm in the area between the pump station site and the public trail and 4) installation of perimeter native landscaping materials to assist in screening. b) See response XI11 a. XIV. Cultural Resources a) The Cannon Road Reach 1 Final Environmental Impact Report, or the Cannon Road FEIR, indicates that significant fossils may be present in late Eocene-age Santiago Formation and late Pleistocene-age marine terrace and beach deposits in the project area. Mitigation measures were identified in the Cannon Road FEIR, which will reduce impacts to a less than significant level. Previously identified mitigation measures have been incorporated into the proj ec t . b) The Cannon Road FEIR identified the location of a significant cultural resource sites in the project vicinity. The proposed sewer line could potentially impact the margin of site SDM- W-126, unless mitigated. Mitigation measures, identified in the Cannon Road FEIR, will reduce impacts to a less than significant level. Previously identified mitigation measures have been incorporated into the project. EARLIER ANALYSES USED The following documents were used in the analysis of this project and are on file in the City of Carlsbad Planning Department located at 1635 Faraday Avenue, Carlsbad, California, 92008, (760) 602-46 19. 1. Carlsbad Municipal Water District Facility Engineering Design Plans, Exhibits 1,2,5 and 6. 2. Final Environmental Impact Report for Reach 1 of Cannon Road in the City of Carlsbad EIR 87-02, SCH No. 83042707 (City of Carlsbad 1989). 3. Final Supplemental Environmental Impact Report for a Segment of the South Agua Hedionda Sewer Interceptor System in the City of Carlsbad EIR 83-4A, SCH No. 89010222 (City of Carlsbad 1990). 4. Biological Technical Report for a Segment of the South Agua Hedionda Sewer Interceptor System in the City of Carlsbad (RECON 1999). 17 Rev. 03/28/96 0 0 5. Final EIR for the Kelly Ranch General Plan Amendment and Zone Change, EIR 83-04, SCH No. 83042707 (City of Carlsbad 1984). 6. Final Master Environmental Impact Report for the City of Carlsbad General Plan Update, EIR 93-01, SCH No. 93091080 (City of Carlsbad 1993). 7. City of Carlsbad General Plan Land Use Element (1983) and Zoning Code (1983 as amended), (City of Carlsbad 1983). 8. Draft Habitat Management Plan (HMP) for Natural Communities in the City of Carlsbad (City of Carlsbad 1999). 9. Multiple Habitat Conservation Program (MHCP) - Biological Goals, Standards, and Guidelines for Multiple Habitat Preserve Design (City of Carlsbad 1998). 10. City of Carlsbad Local Coastal Program (LCP)/Technical Support Papers addressing Geologic Hazards, Public Works, Agriculture, etc. (City of Carlsbad 1980). 11. City of Carlsbad Local Coastal Program (LCP) - Agua Hedionda Land Use Plan (LUP). (City of Carlsbad 1982). 12. Coastal Development Permit for the Kelly Ranch , March 19, 1985. Staff Report Special Condition No. 1 re: permitted underground easements on Lot 20. 13. Engineering Study for the South Agua Hedionda Sewerage System. Wilson Engineering. (City of Carlsbad 1989). 14. Regional Water Quality Control Plan for the San Diego Basin (9). (San Diego Regional Water Quality Control Board, as amended October 1994). 15. Biological Resource Survey and Impact Analysis for the Installation of a Sewer Line Along Reach 2 of Cannon Road (RECON 1989). 16. San Diego Gas & Electric letter regarding the siting of permanent structures within an electric transmission line right-of-way (November 24, 1989). 17. USGS 7.5 Minute Topographic Map, San Luis Rey Quadrangle. 18. Letter report, Ray Fakoury of Brown & Caldwell to Randy Klaahsen of CMWD, July 25, 1998. 18 Rev. 03/28/96 0 0 LIST OF MITIGATING MEASURES (IF APPLICABLE) 1. Prior to the issuance of a City Notice to Proceed, the Carlsbad Municipal Water District shall demonstrate to the satisfaction of the Planning Director, that approval of a Coastal Development Permit has been received from the California Coastal Commission. 2. Prior to the issuance of a City Notice to Proceed, the Carlsbad Municipal Water District shall receive approval of a Conditional Use Permit from the City of Carlsbad Planning Commission. Additionally, any conditions applied to the project as part of the conditional use permit shall be incorporated in the project to the satisfaction of the Planning Director, prior to the issuance of a City Notice to Proceed. 3. The project shall comply with the City’s Hillside Development Guidelines. Prior to the issuance of a City Notice to Proceed, the Carlsbad Municipal Water District shall receive approval of a Hillside Development Permit from the City of Carlsbad Planning Commission. Additionally, any conditions applied to the project as part of the hillside development permit shall be incorporated in the project to the satisfaction of the Planning Director, prior to the issuance of a City Notice to Proceed. 4. The project shall comply with the City’s grading and erosion control standards and all National Pollution Discharge Elimination System (NPDES) standards. Prior to beginning any construction activity, the Carlsbad Municipal Water District shall demonstrate to the satisfaction of the City Engineer that all standards have been incorporated into the project. 5. The Carlsbad Municipal Water District shall utilize “micro tunneling”, “directional drilling”, or other similar non-disruptive technologies when installing water pipelines through natural vegetated open space areas. 6. The Carlsbad Municipal Water District shall obtain all the necessary clearances from the San Diego Regional Water Quality Board and demonstrate clearance to the satisfaction of the Planning Director, prior to the issuance of a City Notice to Proceed. 7. The project design features and operational measures for mitigation of potential system failure and sewage spill, which are identified in the preliminary design plans, shall be incorporated into the final design plans for the project. Prior to the issuance of a City Notice to Proceed, the Carlsbad Municipal Water District shall submit to the Planning Director a report which demonstrates, in detail, those project design features and operational measures. Design features and operational measures shall be maintained for the life of the project. 8. The project design features and operational measures for odor mitigation which are identified in the preliminary design plans, shall be incorporated into the final design plans for the project. Prior to the issuance of a City Notice to Proceed, the Carlsbad Municipal Water District shall submit to the Planning Director a report which demonstrates, in detail, those project design features and operational measures. Design features and operational measures shall be maintained for the life of the project. 9. Lift station equipment shall be located within a fully enclosed structure. The exterior building material and finish (i.e. roofing, siding, doors, color, etc.) of the structure shall be of a character that blends in with the surrounding natural environment. Additionally any other project installations including the retaining walls, any tanks or equipment enclosures, 19 Rev. 03128196 e a fencing, and visible paved surface materials shall be finished with a color, and/or comprised of a texture, which blends in with the surrounding natural environment. Architectural elevations of the building and materials samples shall be submitted to the Planning Director for final review and approval prior to the issuance of any City Notice to Proceed. 10. The lift station structure and site shall be screened from public view by earth mounding and landscaping to the maximum extent feasible and to the satisfaction of the Planning Director. A landscaped earth mound shall be provided in the area between the lift station site and the adjacent public trail. Landscaping shall be extended to the entire perimeter of the lift station site where needed to assist in screening. Landscaping materials shall be a native species, or a compatible species, and of a size to ensure maximum feasible screening with one year of establishment. Prior to the issuance of a City Notice to Proceed, the Carlsbad Municipal Water District shall submit detailed landscape and irrigation plans to the Planning Director for review and final approval. 11. Prior to the issuance of a City Notice to Proceed, the Carlsbad Municipal Water District shall obtain concurrence from the United States Department of the Interior Fish and Wildlife of a mitigation program for impacts to coastal sage scrub and the California coastal Gnatcathcer. 12. Mitigation of impacts to biological resources identified in the project’s Biological Technical Report dated July 19, 1999 shall involve restoration and/or preservation of habitat, either on- or off-site, at ratios prescribed by the USFWS and/or the City of Carlsbad Habitat Management Plan and to the satisfaction of the Planning Director. 13. Prior to the issuance of a City Notice to Proceed, the Carlsbad Municipal Water District shall submit documentation of any acquisition of property or open space easement for habitat preservation purposes, to the satisfaction of the Planning Director. 14. Prior to the California Coastal Commission’s consideration of a Coastal Development Permit for the project, the Carlsbad Municipal Water District shall submit to the State of California Department of Fish and Game an aerial map indicating the limitdalignment of the project and documents indicating that necessary easements have been obtained for the project. This information shall be provided at least 1 month in advance of the CCC meeting. 15. Prior to the issuance of a City Notice to Proceed, the Carlsbad Municipal Water District shall submit a habitat restoration, maintenance and monitoring plan, to the satisfaction of the Planning Director and the State of California Department of Fish and Game. Monitoring the restoration area shall be conducted by qualified professional for a period no less than five years from establishment of the habitat and discontinued thereafter only when the restoration is completed to the satisfaction of the Planning Director. 16. The contract for construction of the lift station and pipelines shall specify that a qualified biological monitor shall be employed to assure that all biological mitigation measures are properly camed out. The biological monitor shall be on-site when limits of construction are marked and when all initial clearing of the site is done. The biological monitor shall carry out subsequent monitoring of construction at any time he or she may consider monitoring to be necessary, depending on the work schedule and locations and consistent 20 Rev. 03/28/96 17. 18. 19. 20. 21. a) b) c> d) e> 0 0 a with the provisions of the habitat restoration, maintenance, and monitoring plan. Limits of construction shall be flagged, staked, and fenced prior to the initiation of clearing, brushing, or grading under the supervision of the biological monitor to the satisfaction of the Planning Director. Removal of any Diegan coastal sage scrub and disturbed coastal sage scrub must be conducted and construction on the pump station site must begin outside of the breeding season of the coastal California gnatcatcher to avoid impacting any breeding birds within the alignment. Vegetation can be brushed between August 31 and February 14. A qualified biological monitor must be present to insure that there are no impacts to resident birds that use the coastal sage within the study area. Demarcation fencing shall be examined at the beginning of each work day and its integrity insured in all areas scheduled for construction that day. Paving/surface materials or treatments for the northeasterly, lift station access road off shall be subject to the final review and approval of the State of California Department of Fish and Game and the Planning Director. The Carlsbad Municipal Water District shall comply with all paleontological resource mitigation measures identified in the related project Environmental Impact Report for the Cannon Road (SCH #83042707). The mitigation measures/program components involve the following: The contract for construction of the project shall require that a qualified consulting paleontologist shall be retained prior to the beginning of construction on any part of the proposed project. The requirement for monitoring shall be noted on grading plans. All persons involved in the paleontological monitoring of grading activities shall be approved by the City of Carlsbad Community Services Department. The consulting paleontologist shall attend any preconstruction-pregrading meeting to consult with the grading and excavation contractors. The consulting paleontologist shall be on-site full time during excavation into the Santiago Formation if previously undisturbed. The monitoring time may be decreased at the discretion of the paleontologist in consultation, depending on the rate of excavation, the materials excavated, and the abundance of fossils. In the event that fossils are discovered, the consulting paleontologist shall be authorized to temporarily halt, direct, or divert grading to allow recovery of fossil material in a timely manner. The paleontologist shall contact the City Community Development Services Department at the time of discovery. The department shall concur with the salvaging methods before construction activities are allowed to resume. Any fossil materials collected from the site shall be cleaned, sorted, and cataloged and then donated to an institution with a research interest in the materials, such as the San Diego Natural History Museum. The qualified paleontologist shall be responsible for preparation of fossils to a point of identification as defined by applicable guidelines, and submittal of a letter of acceptance from a local qualified curation facility. The paleontologist shall record any discovered fossil sites at the San Diego Natural History Museum. Within six weeks of the completion of grading for the project, the consulting paleontologist shall prepare a monitoring results report with appropriate graphics (even if negative), analyses, and conclusions of the above program. The report shall be submitted to the City 21 Rev. 03/28/96 0 e of Carlsbad Community Develop-ment Services Department and the San Diego Natural History Museum. 20. The Carlsbad Municipal Water District shall comply with all archeological resource mitigation measures identified in the related project Environmental Impact Report for the Cannon Road (SCH #83042707). The mitigation measures/progrm. components involve the following: a) The contract for construction of the project shall require that a qualified consulting archaeologist shall be retained prior to the beginning of construction on any part of the proposed project. The consulting archaeologist shall be approved by the City of Carlsbad Community Services Department. The consulting archaeologist shall be responsible for implementing the following program of mitigation for potential impacts to site SDM-W- 126. b) Preparation of a research design for approval by the CMWD. The research design should identify important research questions pertinent to the cultural history of the Agua Hedionda Lagoon area. c) Hand excavation of a number of units specified in the research design. The first phase would involve dividing each site area into a 10x1 0-meter grid; units would be excavated within each 10x10-meter square to sample the area of intact site remaining. The second phase would involve restratifying the site based on recovery in Phase 1 and placing additional units in the area of highest recovery. The second phase excavations may be additional 1x1-meter units, or larger units may be necessary if features are found during the first phase. d) Analysis of the results of the excavation focused towards identifying artifact attributes which would address the investigation’s research design. This analysis would include submittal of shell and charcoal samples for radiocarbon dating and submittal of soil samples for faunal and floral microanalysis. e) Preparation of a final report documenting the findings and evaluating the hypotheses generated during the research design. Approval of the final report by the CMWD would complete the mitigation. ATTACH MITIGATION MONITORING PROGRAM (IF APPLICABLE) 22 Rev. 03/28/96 e 0 APPLICANT CONCURRENCE WITH MITIGATION MEASURES THIS IS TO CERTIFY THAT I HAVE REVIEWED THE ABOVE MITIGATING MEASURES AND CONCUR WITH THE ADDITION OF THESE MEASURES TO THE PROJECT. Date y /rr 100 1 Signature 23 Rev. 03/28/96 0 @ ENVIRONMENTAL MITIGATION MONITORING CHECKLIST: Page I of 9 m 0 0 ? n 3 ? n a z d, n 3 0 c3 cf u1 m z 3 z 3 m 0 0 Q) 7 Q) !! - LL 0 c 0 Q d - - I 5 c, E k c, e, - S m m K 0 U I e, m 3 u .- 4 5 3 0 v) lii 2 z a L W i2 a 6 n 6 .. 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