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HomeMy WebLinkAbout2011-02-02; Planning Commission; ; PDP 00-02C|SP 144L|RP 10-26|CDP 10-17|HDP 10-05|SUP 10-02|HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT        Comm      1635 F   Memo   February   To:  From:  Via  Re:      Staff is re project’s changes  words to   It d th th im a a m P si unity & Econ araday Ave. ⎪ orandum y 2, 2011  Plannin Pam D Don Ne Errata  17/HD FORCE ecommendi  EIA Part II  are shown i o be added.  t would be  evelopment hat would be hose identif mpacts coul nalyzed in th nd the impa measures sim lant expans ignificant cu omic Develo  Carlsbad, CA ERR m  ng Commiss rew, Associa eu, Planning Sheet for A DP 10‐05/SU E MAIN, AND ng that the  ‐ Section X n strikethro expected ho t projects, p e less than s fied in this  d resulting  his documen acts are not k milar to thos ion project,  mulative im pment  A 92008 ⎪ 760 RATA SHEET ion  ate Planner g Director  Agenda Item  P 10‐02/HM D GRAVITY S Planning Co XVIII. (b) ‐ M ugh to indic owever, tha lus this mas significant by Environmen from the N nt inasmuch  known at th se found in t in combina pacts.  0‐602‐2710 ⎪ T FOR AGEND #1 – PDP 00 MP 10‐03 – A SEWER REPL ommission in Mandatory F ate words to at all enviro ssive sewer C y means of m ntal Initial St NRG Power  as that proj is time.  As a this Study, t ation with th  760‐602‐856   DA ITEM #1 0‐02(C)/SP 1 AGUA HEDIO LACEMENT P nclude the fo Findings of S o be deleted nmental im CIP project,  mitigation m tudy. Howe Plant expan ject has not  a consequen hese project he proposed 60 fax  144(L)/RP 10 ONDA SEWER PROJECT   ollowing tex Significance  d and in und pacts assoc could be m measures sim ver, possibl nsion project yet been sp nce, and ass ts, excluding d project wo 0‐26/CDP 10 R LIFT STATI xt changes to (page 99).  erline to ind iated with t itigated to l milar in conte e environm t have not  ecifically de uming mitig g the NRG P ould not res 0‐ ION  o the   The  dicate  these  evels  ent to  ental  been  fined  ation  ower  ult in  The City of CARLSBAD Planning Division A REPORT TO THE PLANNING COMMISSION Item No. P.C. AGENDA OF: February 2, 2011 Application complete date: November 30, 2010 Project Planner: Pam Drew Project Engineer: David Rick SUBJECT: PDF 00-02(C)/SP 144(LVRP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT - Request for: 1) adoption of a Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program; 2) a recommendation of approval for a Precise Development Plan Amendment, Specific Plan Amendment, Redevelopment Permit, Hillside Development Permit, and Habitat Management Plan Permit; and 3) approval of a Coastal Development Permit and Special Use Permit (Floodplain). The requested actions are for: 1) an amendment to the Precise Development Plan for the Encina Power Station (EPS) and the proposed 50 million gallon per day (mgd) capacity Agua Hedionda Sewer Lift Station and associated improvements (SLS) proposed at the EPS; 2) an amendment to the Encina Specific Plan to incorporate the proposed SLS; 3) a Redevelopment Permit for the SLS and associated piping within the boundaries of the South Carlsbad Coastal Redevelopment Area; and 4) a Coastal Development Permit, Hillside Development Permit, Special Use Permit (Floodplain), and Habitat Management Plan Permit. The total sewer project consists of a new 3,960-foot long force main (sewer line) and an 8,420-foot long gravity sewer line, a 50 mgd capacity SLS, associated utility relocations (natural gas transmission and electrical overhead relocations) and a pipe-support bridge spanning 140-feet across the Agua Hedionda Lagoon channel. The proposed project extends a total distance of approximately 12,380 linear feet (2.35 miles) in a north-south direction from near Chinquapin Avenue, south of Tamarack Avenue, to the Encina Wastewater Pollution Control Facility (EWPCF) on Avenida Encinas, south of Palomar Airport Road. The project will be constructed in three phases within the City's Coastal Zone. The locations and phases are as follows: Phase 1 - Cannon Road to the EWPCF within the public right-of-way on Avenida Encinas (sewer and gravity force main and 12 inch recycled water line); Phase 2 - south of Chinquapin Avenue to the south side of the Agua Hedionda Lagoon within San Diego Northern Railroad (SDNR) right-of-way (gravity sewer, including the pipe support bridge, 12 inch recycled water line and 6 inch potable water line); and Phase 3 - southern edge of the lagoon to Cannon Road within SDNR, NRG, SDG&E, and West Development properties and within the city's public right-of-way on Avenida $ PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 2 Encinas (SLS, sewer force main, and 12 inch recycled water line). The proposed project is located within Local Facilities Management Zones 1, 3, and 22. I. RECOMMENDATION That the Planning Commission: 1) ADOPT Planning Commission Resolution No. 6753 RECOMMENDING ADOPTION of the Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program; 2) ADOPT Planning Commission Resolutions No. 6754, 6755, 6756, 6758 and 6760 RECOMMENDING APPROVAL of Precise Development Plan Amendment (POP 00-02(C))5 Specific Plan Amendment (SP 144(L)), Redevelopment Permit (RP 10-26), Hillside Development Permit (HDP 10-05), and Habitat Management Plan Permit (HMP 10-03); and 3) ADOPT Planning Commission Resolutions No. 6757 and 6759 APPROVING Coastal Development Permit (CDP 10-17) and Special Use Permit (SUP 10-02), based on the findings and subject to the conditions contained therein. II. INTRODUCTION The proposed project involves the installation of a sewer trunk line in a north-south direction, a mostly underground, sensitively designed SLS (50 mgd capacity), a modern, attractive sewer support bridge (140-foot weathered steel span), pipeline improvements on the Vista/Carlsbad Sewer Interceptor System, specifically segments VC11, VC12, VC13, VC14, and VC15, and associated sewer force main and gravity piping, including a 6-inch potable water line and a 12- inch recycled water line. These sewer segments are part of a regional sewage collection program which receives sewage flow from the cities of Carlsbad and Vista and are jointly owned by the City of Vista and the City of Carlsbad, and are maintained by the City of Carlsbad. The Agua Hedionda Lift Station is maintained and operated by the Encina Wastewater Authority (EWA) by agreement with the cities. The subject sewer improvements extend from the north side of the Agua Hedionda Lagoon to the regional EWPCF. The new line will be located primarily within and along the SDNR railroad right-of-way and Avenida Encinas right of way to the west of the I- 5 freeway. The proposed sewer support bridge would also provide the lagoon crossing for the Coastal Rail Trail, a separate, future project in this area. The proposed improvements are necessary as a replacement for or are in addition to the existing sewer line and lift station, which are under-sized, outdated and in some areas nearing the end of their useful life. These facilities, which will either be demolished or kept if in good repair and needed to provide additional capacity, do not have sufficient capacity to convey future projected build-out wastewater flows of the urbanized service area. The proposed project is designed of a size adequate to convey the future anticipated build-out demand of the service area. Table 1 below shows the current, proposed, and anticipated build-out sewer flows: PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 3 TABLE 1 Current &Proposed (Build-Out) Wastewater Flow & Capacity Average Dry Weather Flow (ADWF) Peak Dry Weather Flow (PDWF) Peak Wet Weather Flow (PWWF) Capacity Current lOmgd 15 mgd 25 mgd 30 mgd Proposed (Build-out) 14 mgd 21 mgd 33 mgd 50 mgd III. PROJECT DESCRIPTION AND BACKGROUND The project will remove and replace the existing sewer lift station and pipe support bridge and will install approximately 1,400 linear feet of 54-inch sewer pipe to the north of the new lift station location. The project will also include the construction of 3,960 linear feet of 30-inch force main and approximately 7,020 feet of 54-inch gravity sewer south of the new lift station location. While the existing 42-inch line north of the existing lift station will be abandoned and a portion removed, the existing 42-inch line south of the existing lift station is in sufficiently good condition that it will remain in place as a parallel line to the new force main/gravity sewer to be constructed south of the new lift station. The existing line to remain in place will handle low and average volume sewer flows. Related utility relocations include the option of relocating approximately 380 feet of natural gas transmission pipe. The owner of this gas transmission pipe (SDG&E) is presently undecided on whether to relocate this pipe from its present support trestle bridge structure across the lagoon channel to the proposed sewer line support bridge; and to thus demolish and remove the existing gas line support bridge. Nonetheless, it is included in this project and the environmental impacts associated with the gas line relocation and trestle bridge removal were included in the environmental analysis so that if SDG&E decides to relocate the gas line and remove the trestle bridge structure, the environmental review of this segment of the project has been completed. Also proposed within the work area and in an alignment parallel to the sewer line is a 12-inch recycled water line which will run from the north end of the project area to the south end (total 12,460 ft). This line will transport pressurized recycled water to the northern sections of Carlsbad from the Carlsbad Water Recycling Facility, located next to the EWPCF. This recycled line will be installed on primarily the east side of the sewer pipe. It is likely that only the portion of recycled water line between Cannon Road and Palomar Airport Road will be constructed and pressurized with the sewer line. Completion of the reminder will occur as additional funding becomes available. Further information about project description, construction phasing, staging areas, traffic control, grading, and other related details are included as Attachment 12. Jurisdictional Authority. Because of its location and geographic reach, the project will require permits from a number of jurisdictions in addition to the city-issued permits. The following paragraphs summarize the required permits and issuing authority. PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 4 Planning Commission • Coastal Development Permit (CDP) for the section of the project south of Cannon Road. • Special Use Permit (SUP) for any construction or development within the 100-year floodplain, which in this case involves only the removal of the existing trestle bridge pilings which presently are within the lagoon channel (the new bridge support abutments will be constructed on the lagoon bank and a minimum of 10-feet above the 100-year flood zone). Housing and Redevelopment Commission (upon Planning Commission Recommendation) • Redevelopment Permit (RP) for all structures proposed within the South Carlsbad Coastal Redevelopment Plan (SCCRP). Proposed improvements within the EPS property to slightly south of Cannon Road are within the SCCRP. City Council (upon Planning Commission recommendation) • Habitat Management Plan Permit (HMP) for the impacts to native habitat necessitated by the construction of the pipe support bridge abutments. • Hillside Development Permit (HDP) for the lift station structure because the proposed site contains a slope of 15% or greater and also has an elevation differential of more than 15-feet. • Precise Development Plan (PDF) Amendment and a Specific Plan (SP) Amendment for all structures proposed within the EPS property. • SP 144 Amendment for all structures proposed within the SP boundary. California Coastal Commission • Coastal Development Permit for all proposed work north of Cannon Road to the northern end of the project, including the SLS. This area is within the Agua Hedionda segment of the City's Local Coastal Program, where the California Coastal Commission has retained permitting authority. Resource Agencies • U.S. Army Corps of Engineers (Section 10 of the River and Harbors Act - 404 Permit). • Regional Water Quality Control Board (Section 401 of the Clean Water Act - 401 Certificate). • California Department of Fish and Game (Section 1600 - Streambed Alteration Agreement) for the removal of the existing trestle bridge(s) and construction of the new bridge over the Agua Hedionda Lagoon channel. There are no unresolved issues. The staff recommendation approval with conditions is supported by the analysis as follows. IV. ANALYSIS A. Carlsbad General Plan; B. Title 21 (Zoning) and Precise Development Plan (POP 00-02); PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 5 C. Encina Specific Plan (Specific Plan 144); D. South Carlsbad Coastal Redevelopment Plan; E. Coastal Development regulations for the Coastal Resource Protection Overlay Zone, Mello II Segment and the Agua Hedionda Lagoon Land Use Plan segment (Chapters 21.201 and 21.203 of the Carlsbad Municipal Code and the Agua Hedionda Land Use Plan); F. Hillside Development Ordinance (Chapter 21.95 of the Carlsbad Municipal Code); G. Special Use Permit (Floodplain Management) regulations (Chapter 21.110 of the Carlsbad Municipal Code); H. Habitat Management Plan; and I. Growth Management (Chapter 21.90 of the Carlsbad Municipal Code). A. General Plan The General Plan designates the EPS and adjacent SDG&E properties for Public Utility (U) uses. The General Plan Land Use Element describes this category of land use as applied to "...areas, both existing and proposed, either being used or which may be considered for use for public or quasi-public functions." The Land Use Element also states that U designation's "primary functions include such things as the generation of electrical energy, treatment of waste water, public agency maintenance, storage and operating facilities, or other primary utility functions designed to serve all or a substantial portion of the community." The proposed SLS and other project components in the "U" land use designation are consistent with this description, particularly in that they are designed to serve much of Carlsbad. The various pipelines proposed for the project are located within several different land use designations. Installation of pipelines is considered to be consistent with the Land Use Element in that pipelines are allowed in all General Plan land use designations. Further, since they would be placed underground, would be generally located in street and railroad right of ways, and would cause only limited, impacts to sensitive native habitats (pipe support bridge abutments), the proposed pipelines are consistent with General Plan policies requiring development to protect and enhance the City's environment, character, and image. In addition, staff finds the project is consistent with the General Plan as discussed below: a. The proposed SLS and additional sewer piping is needed to ensure adequate provision of sewer service into the future and will protect the quality of the lagoon and sensitive habitat in the area by locating the SLS further to the east, installing modern equipment, and replacing the fragile wood trestle that currently encroaches in the lagoon. These elements are consistent with Land Use Element Growth Management and Public Facilities Goal A.I, which states, "A City which ensures the timely provision of adequate public facilities and services to preserve the quality of life of residents." b. The proposed SLS will replace an existing sewer lift station that is old and not adequately sized to accommodate planned growth per the existing Carlsbad and Vista General Plans. In PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 6 addition, the project would result in more efficient and reliable wastewater transport to the EWPCF. The project is consistent with the Lane Use Element Growth Management and Public Facilities Goal A.2, which states, "A City which maintains a system of public facilities adequate for the projected population" and Goal A.3, which states, "A City that responsibly deals with the disposal of solid and liquid waste," c. The proposed SLS will be constructed within the existing hillside away from the lagoon and will not be visible from the south and east, nor will it block lagoon or ocean views. In addition to its sensitive site design, both the SLS and the proposed pipe support bridge use colors and materials that blend with their surroundings. Furthermore, the proposed pipe support bridge will be constructed to allow for the future Coastal Rail Trail. These elements are consistent with Land Use Element Environmental Implementing Policies and Action Programs C-5, which states, "Limit future development adjacent to the lagoons and beach in such a manner so as to provide to the greatest extent feasible the physical and visual accessibility to these resources for public use and enjoyment." d. General Plan Circulation Element Scenic Roadway Policy C.I requires implementation of the Carlsbad Scenic Corridor Guidelines. This 1998 document addresses the appearance of development along the railroad corridor and states buildings adjacent to the railroad shall be "architecturally articulated" and present a "pleasant fa9ade." The SLS as well as the pipe support bridge achieve this desired goal through site and structure design and colors and materials. The SLS, for example, will be constructed mostly below the surrounding finish grade level to preserve the natural contours of its hillside setting. Further, the low profile structures will have a flat roof with square and rectangular shapes architecturally articulated to vary building elevations and facades. The visible portions of the walls of the structures will be accented and shadowed with textured and geometric patterns and earth tone colors to blend it with the surrounding hillside. Furthermore, landscaping with native plants will be planted in front of the buildings to soften the structures appearance. B. Title 21 (Zoning) and Precise Development Plan (PDF 00-02) Background The EPS site has a Public Utility (P-U) zoning, which implements the corresponding General Plan U land use designation. Section 21.36.020 of the Public Utility Zone lists permitted uses and structures, including wastewater treatment, disposal or reclamation facilities. Accordingly, as a proposal to enhance and replace the existing sewer lift station and related pipelines, the project is a permitted use in the P-U Zone. Section 21.36.030 of the P-U Zone prevents the issuance of any building permits or entitlements "... until a precise development plan has been approved for the property." Consistent with this requirement, PDP 00-02 was approved in 2006 for the EPS and most recently amended in 2009 for changes to the desalination project (PDP 00- 02(B)). This PDP serves as the primary entitlement for the SLS. PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 7 The proposed SLS and appurtenances require an amendment to the PDF. However, these amendments are relatively minor since there is an existing sewer lift station located on the EPS and acknowledged in the PDF and because the project is a permitted use in the P-U zone. The amendment primarily consists of updating the PDP text and graphics to recognize the new location of the proposed SLS and the removal of the existing sewer lift station and overflow basin. Other "housekeeping" changes are proposed to update the PDP contents (e.g., to reflect that the desalination plant is an approved, not proposed project) and list the various regulations applicable to proposals within it. No standards of the PDP would be changed by the proposal. The project complies with the requirements of the P-U zone and PDP 00-02(B). Attachment 13 is a table that provides a detailed analysis of project compliance with applicable development standards. C. Encina Specific Plan (SP 144) Adopted in 1971 and amended several times since, the Encina Specific Plan encompasses 680 acres and spans a two-mile distance from the Pacific Ocean to just east of Cannon Road near its intersection with Faraday Avenue. Within its boundaries are the EPS, Agua Hedionda Lagoon east and west of Interstate 5, and adjacent areas. Specific Plan 144(H), an action approved with the desalination project in 2006, incorporated PDP 00-02 by reference. The Specific Plan states that it must be amended if the PDP is amended. Since the proposed project would amend PDP 00-02, it triggers an amendment of the Encina Specific Plan. In 1998, the City Council adopted a Resolution of Intention (ROI Reso. No. 98-145), directing city staff to study and consider a comprehensive land use plan for properties within Specific Plan 144 (SP-144). The study was not done, but subsequent actions of the City Council reconfirmed that a comprehensive specific plan update is necessary, and that it should be applicant, rather than city-initiated. However, in 2002, the City Council, in Agenda Bill 16,790, directed that any applicant of a proposed project within the Specific Plan area be required to prepare a comprehensive update of the specific plan. This direction was revised in 2003, when the City Council passed Resolution 2003-208, allowed the PDP and Desalination Plant project to be processed as an amendment to the Encina Specific Plan 144 rather than through a comprehensive update of the specific plan. While the proposed SLS project is an improvement partially within SP-144, it is not subject to the comprehensive update requirement because it does not trigger or significantly impact the land use, public access and other issues of concern identified in the 1998 ROI. Specifically, the project is not subject to the comprehensive update requirement for the following reasons: a. The project improves major regional infrastructure that cannot be feasibly relocated. The project will replace existing facilities which have reached the end of their useful life. PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 PageS b. The lift station and pipelines are not significant new land uses; they would improve existing like facilities and would be constructed in.generally the same locations as those existing facilities. They would be located in an existing utility corridor bordered on the west side by the railroad. The majority of the pipeline portion of the project within SP-144 would be underground. Furthermore, care has been exercised in the design of above-ground structures such as the proposed lift station that features a low profile and partially buried structure and the replacement bridge for the sewer line. c. As a replacement and expansion of existing, like utility uses in generally the same location, the project would not represent a new, significant impediment to addressing the issues identified in the ROI, including land use and public access. d. The project proposes no changes to general plan land use or zoning designations or any conditions or policies of SP-144. e. As discussed in this section, the project complies with all applicable land use documents affecting the SP-144 area, including the General Plan, Zoning Ordinance, Precise Development Plan, South Carlsbad Coastal Redevelopment Area Plan, Agua Hedionda Land Use Plan, and Scenic Corridor Guidelines. f. The project would result in only minor changes to the latest adopted versions of the Encina Specific Plan and the PDF (SP-144(J) and PDF 00-02(B)) in the form of text and graphic changes that merely recognize the proposed improvements and make clarifications. Consistent with SP 144(J) and PDF 00-02(B), these minor changes are considered "formal amendments" to the documents. Since the project would not require a comprehensive update, it instead proposes an amendment to SP-144. The amendment enables the project to continue to be a part of SP-144 and subject to any future comprehensive review. As part of the amendment, the minor changes proposed to the SP-144 text and graphics reference and briefly describe the new SLS and PDF 00-02(C). Minor "housekeeping" revisions are also proposed to standardize references to SP-144 and note the City Council's requirement to comprehensively update the specific plan. Proposed revisions would also clarify the Council's discretion to waive or modify this update requirement as is recommended for this project by way of the amendment proposed. The proposed project complies with applicable Specific Plan standards and requirements adopted over the years regarding architectural review, building height, and exterior lighting, as is discussed in detail in Attachment 13. D. South Carlsbad Coastal Redevelopment Plan The South Carlsbad Coastal Redevelopment Plan (SCCRP), adopted in 2000 and amended in 2005, establishes a 555-acre redevelopment area that includes the portion of the project from approximately the proposed SLS to Avenida Encinas, a few hundred feet south of the Cannon Road area. The SCCRP is in effect through 2030. The stated goals that are applicable to the project include: PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 9 • Eliminating blight and environmental deficiencies in the Redevelopment Project Area. • Strengthening the economic base of the Project Area and the community by the installation of needed on- and off-site improvements to stimulate new commercial/industrial expansion, employment and economic growth. • Developing new beach and coastal recreational opportunities. The project will achieve these key goals of the redevelopment plan by replacing an existing sewer lift station, which is blighted, under-sized, outdated and nearing the end of its useful life. The project also includes the installation of a 12" recycled water line, which will run the length of the project. The recycled water line will improve the reliability and water quality of the City's recycled water system and will provide adjacent commercial, industrial and office sites a reliable water supply for landscaping as an alternative to using potable water that is in short supply. Furthermore, the pipe support bridge over the Agua Hedionda Lagoon is being designed to accommodate the future Coastal Rail Trail through this area, which will allow pedestrians and bicyclists recreational opportunities adjacent to the lagoon and coast. SCCRP Section 527 requires all property within the Redevelopment Plan boundaries to be developed, redeveloped, or rehabilitated in conformance with the goals and provisions of the Plan and the requirements and regulations of the General Plan, Zoning Ordinance, and any other state or local requirements, such as guidelines and specific plans. Further, Section 601 indicates the permitted land uses within the Plan boundaries are those permitted by the General Plan, Zoning Ordinance and all other state and local requirements. Exhibit C of the SCCRP lists proposed projects and infrastructure improvements and identifies "Commercial Rehabilitation and Economic Development Programs", which facilitate development of modern industrial, commercial, and utility facilities. An amendment to SCCRP Section 601 passed and adopted in November 2005, states that specific uses, including a "wastewater treatment plant" may be permitted in the Redevelopment Plan only if the Housing and Redevelopment Commission finds all of the following are satisfied: • The Commission approves a finding that the land use serves an extraordinary public purpose; • That the Commission approves a Precise Development Plan or other appropriate planning permit or regulatory document; and • That the Commission has issued a Redevelopment Permit. A Redevelopment Permit and Precise Development Plan are included in this project. As stated above, the Housing and Redevelopment Commission must also make a finding that the proposed project serves an extraordinary public purpose. Evidence to support making this finding is provided below. • As mentioned above the existing sewer lift station and pipelines, which was constructed in 1964 and rehabilitated in 1989, are under-sized, outdated, and in some areas nearing the end of their useful life. These facilities also do not have sufficient capacity to convey PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 10 future projected buildout wastewater flows of the urbanized service areas of the cities of Carlsbad and Vista. The proposed project is designed of a size adequate to convey the future anticipated buildout demand for the two cities and features modern components to improve reliability and functionality. • The proposed project will be located to the east of the existing sewer lift station and thus further away from the lagoon to protect the sensitive resources in and adjacent to the lagoon. Furthermore, the proposed project will be constructed primarily underground and will not be visible as viewed from the east and south by motorists, passengers and pedestrians in the area. • The proposed project will allow for the dismantling and elimination of the existing lift station structure, over flow basin, and trestle-style wood bridge(s), including the removal of the pilings that are located in the lagoon channel, which would be considered a beneficial impact to the lagoon and visual character of the site. • The lagoon channel bridge is being constructed to accommodate the future Coastal Rail Trail through this area, which will enhance recreational activities where none exist through this area. Overall, the proposed project does comply with the applicable goals and requirements of the SCCRP, including the finding of extraordinary public purpose. E. Local Coastal Program Review of Required Coastal Findings The project affects two parts of the City's Coastal Zone: the Mello II segment and the Agua Hedionda Land Use Plan segment. The latter segment encompasses the Encina Power Station, the lagoon, and property around the lagoon. Pipeline from the northern end of the project to Cannon Road, including the sewer lift station, are located in the Agua Hedionda Land Use Plan segment. Pipelines proposed south of Cannon Road are in the Mello II segment. Municipal Code Chapter 21.203, Coastal Resource Protection Overlay Zone, is also applicable to the project since the Overlay applies to all Coastal Zone properties. While the City has authority to issue the necessary CDP for pipelines in the Mello II segment, the California Coastal Commission (CCC) has retained the authority to issue the CDP north of Cannon Road, which includes the pipe support bridge and the SLS in the Agua Hedionda Land Use Plan segment. Staffs analysis of the project's compliance with the Local Coastal Program (LCP) includes review of this segment. Staff finds the proposed project is consistent with applicable Local Coastal Program policies as follows: • Coastal Act Compliance: o The project is located within the California Coastal Zone, specifically within the Agua Hedionda and the Mello II segments of the adopted LCP. The portion of the project PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 11 north of Cannon Road is in the Agua Hedionda segment, and south of Cannon Road is in the Mello II segment. While the Agua Hedionda Land Use Plan has been adopted by the City of Carlsbad, no Implementation Plan has been certified by the CCC to date, and thus the CCC retains coastal permit authority for improvements within this segment. The Agua Hedionda land uses are generally consistent with the Carlsbad General Plan land uses for the project alignment within the Agua Hedionda LCP segment, which allows the proposed underground infrastructure project within the public right-of-way on Avenida Encinas, south of Cannon Road. The proposed project is consistent with this policy. • Agua Hedionda Land Use Plan Segment: o Agua Hedionda LCP Coastal Act Policy 30230 Marine Resources. The project complies because the project avoids impacts to marine resources as the proposed bridge structure will completely span the entire channel width. Furthermore, the project will remove the existing trestle bridge structure which supports the existing 42-inch sewer pipe. The sewer line bridge structure contains eight (8) narrow bridge support/pilings which presently sequence across and into the bottom of the Agua Hedionda Lagoon channel. These support/pilings are 14-inches in diameter, and set approximately 20-feet below the mud line on the bottom of the lagoon, and create some measurable amount of water friction through the channel, which will be eliminated through implementation of the project. Once removed, the in-channel piling holes will partially collapse and then fill with sand and sediment from the tidal action. As an option, the existing natural gas transmission line bridge may also be removed. This bridge contains four driven wood piles (two on land and two in the channel). The natural gas bridge would be removed in the same fashion as the existing sewer trestle bridge. As a result of these factors, there is a potentially beneficial impact to marine resources. o Agua Hedionda LCP Coastal Act Policy 30231 Biological Resources. The project complies because it will not impact the biological production and the quality of Agua Hedionda Lagoon. In fact, the project will have a positive impact to biological resources particularly when compared to the existing facilities it will enhance and replace. Specifically, the project replaces outdated infrastructure and increases the redundancy, capacity, and reliability of the sewer system. Additionally, the proposed SLS will be located further from the lagoon when compared to its existing location and will incorporate measures to treat stormwater and site runoff during and after construction. Finally, the proposed sewer support bridge spans the lagoon and features no in-water supports, unlike the current bridge it will demolish and replace. o Agua Hedionda LCP Coastal Act Policy 30240(a) Environmentally Sensitive Habitat Areas (ESHA). ESHA is defined in the Coastal Act Section 30107.5 as, "Any area in which plant or animal life or their habitats are either rare or especially valuable because of their special nature or role in an ecosystem and which could be easily disturbed or degraded by human activities and developments." The project complies because the project avoids impacts with sensitive habitats, with the exception of a small disturbed area of Diegan coastal sage scrub (DCSS) habitat. However the PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 12 DCSS in this area is not rare or especially valuable because it is in a series of small, fragmented, isolated patches, surrounded by a highly urbanized environment. Nor is the impacted vegetation especially valuable to the ecosystem since the area has already been largely degraded by urbanization, industrialization and the adjacent railroad. As a result of these factors, the project is not considered an environmentally sensitive habitat area, or ESHA. Notwithstanding that the project will not impact ESHA, it will mitigate for the 0.05 acres of DCSS that will be impacted through compliance with the mitigation measures identified in the Mitigation, Monitoring and Reporting Program (MMRP). Additionally, though the proposed sewer support bridge over the Agua Hedionda channel crosses identified hardline open space, it will be situated 17-feet above the surface of the water, and thus will not impact any hardline habitat. o Agua Hedionda LCP Coastal Act Policy 30240(b) Environmentally Sensitive Habitat Areas. The project complies because it will be sited and designed to prevent impacts which would significantly degrade Agua Hedionda Lagoon. o Agua Hedionda LCP Policy 1.9. This policy limits building heights to 35 feet. The SLS, the only project building, is partially buried to minimize its presence and has a maximum height of 25.5 feet. o Agua Hedionda LCP Policy 6.1. The project complies with this policy, which encourages the maintenance and expansion of lagoon recreational uses, by facilitating extension of the Coastal Rail Trail via the proposed sewer support bridge over the lagoon. • Mello II Segment: o Carlsbad LCP Mello II Policy 3-4 Grading and Landscaping Requirements. The project complies because all graded areas will be improved or landscaped which will minimize erosion. Also grading will not occur during the rainy season unless sufficient erosion control measures have been included in the project construction program. o Carlsbad LCP Mello II Policy 4-3 Accelerated Soil Erosion. The project complies because no portion of the project is being developed on steep slopes as identified in the LCP. The project also complies because the project will incorporate BMPs and submit a water quality technical report as specified in the National Pollutant Discharge Elimination System (NPDES) permit and in the Standard Urban Stormwater Mitigation Plan (SUSMP). In addition, the city will include requirements in the CDP approval to allow inspection and maintenance of the BMPs, and the project minimizes land disturbance activities during construction (e.g., clearing, grading and cut-and-fill). BMPs are also proposed to treat site runoff following construction of the SLS. o Carlsbad LCP Mello II Policy 4-4 Removal of Natural Vegetation. The project complies and will not significantly contribute to the removal of vegetation because it will minimize the sensitive vegetation impacted and will mitigate for that removed. o Carlsbad LCP Mello II Policy 4-5 Soil Erosion Control Practices. The project complies because onsite erosion will be avoided as a result of the use of silt fences, PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 13 sandbags and straw mulch rolls being placed around excavated trench spoils during the construction period. Furthermore, all storm drains and natural drainages situated downstream from the construction will be protected by linear sediment barriers or similar erosion control devices. o Carlsbad LCP Mello II Policy 4-6 Sediment Control Practices. The project complies as sediment control will be provided through the use of silt fences, sandbags and straw mulch rolls being placed around excavated trench spoils during the construction period. Furthermore, all storm drains and natural drainages situated downstream from the construction will be protected by linear sediment barriers or similar erosion control devices. • Coastal Resource Protection Overlay Zone: o The project complies with Municipal Code Section 21.203.040 A. regarding preservation of steep slopes with native vegetation as it does not impact any such features. The SLS will be constructed into an existing hillside without native vegetation and the pipelines are proposed in roadways or already disturbed areas. o The project complies with Municipal Code Section 21.203.040 B. regarding drainage and erosion as the MMRP includes mitigation measures to address drainage, erosion control, sediment control and storm water quality, as set forth in the NPDES permit and other required standards and permits. o The project complies with Municipal Code Section 21.203.040 D. regarding development in liquefaction-prone areas as the MMRP includes a mitigation measure to address potential settlement due to seismically-induced liquefaction or later spread. F. Hillside Development Ordinance (Chapter 21.95 of the Carlsbad Municipal Code) The key purpose and intent of the Hillside Development Ordinance is to assure hillside conditions are properly identified and incorporated into the planning process, and to preserve and/or enhance the aesthetic qualities of natural hillsides and manufactured slopes of the land, minimizing the amount of project grading, especially in highly visible public places. The project is subject to this ordinance due to its proposed grading and construction of the SLS on the north- and west-facing slopes of Agua Hedionda Lagoon and installation of a new gravity sewer line and other infrastructure on both sides of an existing man-made slope just north of the lagoon. The reminder of the project is on flat or gently sloping topography and is not subject to the ordinance. The applicant has submitted the required slope analysis and profiles that identify the slope conditions. The project area in which the SLS is proposed consists of an existing manufactured slope with slope gradients over forty percent, and slope heights that exceed fifteen feet. The project does include grading of a portion of the slope with an inclination of greater than 40 percent; however, per Section 21.53.230 this only applies to natural slopes and not manufactured slopes. The hillside where the SLS will be constructed was manufactured, which is defined as a man-made slope consisting wholly or partially of either cut or fill material. As shown on Figure 2 of the Geotechnical Evaluation Report, prepared by Ninyo & Moore, dated August 3, 2009, the PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 14 lower pad area of the lift station site and adjacent 2:1 slope are manufactured from fill material that was likely dredged from the lagoon. In addition, the proposed alterations of this slope to accommodate the SLS have grading quantities that exceed 10,000 cubic yards per acre. However, per Section 21.95.140 D - Modifications to the development and design standards, development on land designated for nonresidential development is not required to comply with the Hillside Development Ordinance's volume of grading as long as the proposed grading can be justified. As explained below, staff finds the proposed grading volumes acceptable as well as overall compliance of the project with hillside standards. In order to maintain the integrity of the existing hillside, the grading quantities proposed are necessary to enable the SLS structures to be constructed mostly below the surrounding finish grade level, which preserves the existing contours and elevation of the hillside. The large, main lift station will be fitted into the terrain of the site with exterior walls functioning as soil retaining walls, resulting in the facility being situated mostly below grade, with only the south and western walls being readily visible. The low profile structures will have a flat roof with square and rectangular shapes architecturally articulated to vary building elevations and facades. The visible portions of the walls of the structures will be accented and shadowed with textured and geometric patterns and earth tone colors to blend it with the surrounding hillside. Furthermore, landscaping with native plants will be planted in front of the buildings to soften the structures appearance and blend in with the surrounding vegetation. The project complies with the Hillside Development Ordinance as shown in Table C below: TABLE C: HILLSIDE DEVELOPMENT REGULATIONS COMPLIANCE STANDARD PROPOSED PLAN COMPLIANCE Grading volumes > 10,000 cu yds/acre allowed if the project qualifies as an exclusion or modification per Section 21.95.130 and 21.95.140. Soil at the SLS will involve approximately 40,000 cubic yards of soil excavation and 14,000 cubic yards of soil filling, which will result in a net 26,000 cubic yards of soil to be exported from the SLS location. Yes PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 15 TABLE C: HILLSIDE DEVELOPMENT REGULATIONS COMPLIANCE CONTINUED STANDARD PROPOSED PLAN COMPLIANCE As mentioned above, per Section 21.95.140 D - Modifications to the development and design standards, development on land designated for nonresidential development is not required to comply with the volume of grading requirements as long as the proposed grading is justifiable. Grading quantities are acceptable as they are proposed to allow the structures to fit into the hillside without changing the existing contours or reducing the elevation of the hillside. Further, the three sewer lift station structures will be fitted into the terrain of the site with exterior walls functioning as soil retaining walls, resulting in the facility being situated mostly below grade, with only the south and western walls visible up to 25.5 feet above grade. Contour grading: Required for manufactured slopes greater than 200 feet in length and visible from a circulation roadway, collector street or usable public open space. The grading of the manufactured slope for the SLS will maintain the integrity of the existing slopes where possible. The backfilling of soil around the SLS will match the existing contours of the slope. Furthermore, the area to be graded for the SLS and the fill grading for the piping to the north of the Agua Hedionda Lagoon will be planted with drought tolerant native plants and/or hydro-seeded with native seeds to give the slopes a more aesthetically pleasing and naturally appearing look. Yes Screening of slopes.The structures would be low profile and have a flat roof with square and rectangular shapes architecturally articulated to vary building elevations and facades with stained earth tone colors that would look similar to existing conditions, and over time, the proposed drought resistant landscaping would mature and further soften the visual appearance of the structures. Yes Landscape manufactured slopes consistent with City's Landscape manual. A landscape plan has been provided and includes drought resistant native vegetation that will help screen and soften the structures. Yes PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 Page 16 G. Special Use Permit (Floodplain) Projects located within any area of special flood hazards must obtain approval of a Special Use Permit (SUP) by the floodplain administrator (the City Planning Commission). The intent of these regulations is to promote the public health, safety, and welfare and to minimize public and private losses due to flood conditions. Chapter 21.110 states that "Flood losses are caused by the cumulative effect of obstructions in areas of special flood hazards which increase flood heights and velocities, and when inadequately anchored, damage uses in other areas." The project does not propose any structures within the 100-year flood hazard area, but a SUP is required because of the bridge demolition work proposed over Agua Hedionda Lagoon. As mentioned previously, the project will remove the existing trestle bridge structure which supports the existing 42-inch sewer pipe. Optionally, the structure supporting the 12-inch high pressure natural gas transmission line may be removed. The sewer line bridge structure contains eight (8) narrow bridge support/pilings which presently sequence across and into the bottom of the Agua Hedionda Lagoon channel. These support/pilings are 14-inches in diameter, and set approximately 20-feet below the mud line on the bottom of the lagoon, and create some measurable amount of water friction through the channel, which will be eliminated through implementation of the project. No equipment will be located in the lagoon. Once removed, the in-channel piling holes will partially collapse and then fill with sand and sediment from the tidal action. As an option, the existing natural gas transmission line bridge may also be removed. This bridge contains four driven wood piles (two on land and two in the channel). The natural gas bridge would be removed in the same fashion as the existing sewer trestle bridge. As a result of these factors, it is determined that no impacts (and potentially a minute beneficial impact) to the 100-year flood hazard area would occur from implementation of the project. Therefore, the proposed project would be in compliance with the Floodplain Management Regulations. H. Habitat Management Plan Vegetation which would be impacted through implementation of the project includes Diegan Coastal Sage Scrub (unoccupied by the California gnatcatcher) (Habitat Group D), Non-native Grassland (Habitat Group E), Eucalyptus Woodland (Habitat Group F), Disturbed; Land (Habitat Group F), and Developed Land. Permanent impacts for the project will total 3.24 acres and temporary impacts will total 7.35 acres. Permanent impacts are those associated with the construction of the pump station facility, those impacted by permanent grading, and those associated with the Agua Hedionda channel bridge abutment and support foundation structures. This project is covered under the HMP, and therefore is eligible to mitigate upland habitat impacts through the Lake Calavera Mitigation Parcel. Mitigation measures are included to require debiting the appropriate acreage from the Lake Calavera Mitigation Parcel at the ratios indicated in Table 4 of the MMRP under Biological Resources, except that Conservation Standards 7-8 and 7-9 (p. D-115) of the HMP require that Diegan coastal sage scrub mitigation PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT February 2, 2011 PaRe 17 acreage must include a minimum 1:1 creation component (minimum of 0.05 acre creation). Therefore, project mitigation for DCSS will include a minimum of 0.05 acres of credit debiting from the Lake Calavera Mitigation Parcel, and also an additional 0.09 acre of revegetation (creation) of DCSS on or near the impact location. The 0.09 acres of revegetation (creation) of DCSS is expected to occur within and around the eastern half of the demolished, filled-in existing lift station overflow basin, but could occur in a different location in the area. Through design and mitigation, the project avoids and minimizes impacts to habitat. With mitigation measures included in the project's MMRP, all identified impacts can be shown to be consistent with the HMP and reduced to a level of insignificance. Furthermore, the project is consistent with Municipal Code Chapter 21.210, Habitat Preservation and Management Requirements, and is conditioned consistent with the management, maintenance, and monitoring standards of Section 21.210.14. I. Growth Management The project alignment is located within Zones 1, 3 and 22 Local Facilities Management Plans (LFMP) areas. The pipe support bridge and piping to the north of the bridge are located in Zone 1. The SLS and piping to the south to Palomar Airport Road are located within Zone 3, and all piping south of Palomar Airport Road is within Zone 22. The zones identified above implement the Citywide Facilities and Improvements Plan and LFMPs for various geographic areas of Carlsbad. The LFMPs were adopted to ensure that growth occurred in concert with public facilities and service systems. The City's fire, schools, libraries and parks and recreation performance standards were developed assuming population growth occurs through the construction of additional dwelling units. However, the proposed project does not include residential uses, and does not include any components that would result in an increase in population or any public facility or infrastructure demand that might result from commercial or other non-residential land uses. Furthermore, project operations will not result in any increased traffic and will thus not result in any substantial deterioration of the public roadway system, nor generate a need for other governmental services, such as emergency services. Replacement of the existing sewer lift station and force main is designed of a size adequate to convey the future anticipated build-out demand of the service area. V. ENVIRONMENTAL REVIEW Staff conducted an environmental impact assessment to determine if the project could have a potentially significant effect on the environment pursuant to CEQA Guidelines and the Environmental Protection Ordinance (Title 19) of the Carlsbad Municipal Code. The assessment determined the project has potentially significant impacts in the areas of air quality, biological resources, cultural resources, geology/soils, hazards/hazardous materials, land use, transportation/circulation, and mandatory findings of significance. To reduce these potentially PDF 00-02(C)/SP 144(L)/RP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 - AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN AND GRAVITY SEWER REPLACEMENT ;• February 2, 2011 Page 18 significant impacts to a less than significant level, mitigation measures contained in the project's MMRP, are required. Based on the above, the City Planner issued a Notice of Intent to adopt a MND for the project on August 13, 2010 and sent it to the newspapers, County of San Diego, and the State Clearinghouse for a 30-day public review (August 17, 2010 - September 16, 2010). One comment letter was received during the 30-day public review from Preserve Calavera. The comment letter, and staffs response to the letter, are included as part of the Planning Commission Resolution for the MND. The project was modified slightly after the public comment period to increase the proposed 4- inch potable water line to 6-inch per the City of Carlsbad Fire Department's requirements to have enough water pressure available to operate a proposed fire hydrant on the EPS site. The increase in the potable water line will allow for an additional 1,000 gallons per minute (GPM) of water flow to be delivered to the site in the event of a fire. The minor increase in pipe size and water flow does not require recirculation of the Mitigated Negative Declaration in accordance with CEQA Section 15073.5(c)(2), since the increase in the potable water line and water flow is only to accommodate a fire hydrant, and therefore does not constitute a significant project modification nor create a new avoidable significant effect. A memo stating the change to the EIA Part II is included as part of the Planning Commission Resolution for the MND. ATTACHMENTS: 1. Planning Commission Resolution No. 6753 (MND) 2. Planning Commission Resolution No. 6754 (PDP) 3. Planning Commission Resolution No. 6755 (SP) 4. Planning Commission Resolution No. 6756 (RP) 5. Planning Commission Resolution No. 6757 (CDP) 6. Planning Commission Resolution No. 6758 (HDP) 7. Planning Commission Resolution No. 6759 (SUP) 8. Planning Commission Resolution No. 6760 (HMP) 9. Location Map 10. Background Data Sheet 11. Local Facilities Impact Assessment Form 12. Detailed Construction Phasing Description 13. Detailed Analysis of Project's Compliance with Applicable Development Standards 14. 8.5" x 11" Reduced Exhibits 15. 11" x 17" Reduced Exhibits "A" - "Y" dated February 2,2011 SITEMAP NOT TO SCALE Agua Hedionda Sewer Lift Station, Force Main and Gravity Sewer Replacement Project POP 00-02(C) / SP 144(L) / RP 10-26 / CDP 10-17 / HDP 10-05 / SUP 10-02 / HMP 10-03 BACKGROUND DATA SHEET CASE NO: PDF 00-02(CVSP 144(LVRP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10- 03 CASE NAME: AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN, AND GRAVITY SEWER REPLACEMENT APPLICANT: City of Carlsbad REQUEST AND LOCATION: Request recommending adoption of a mitigated neRative declaration and a mitigation monitoring and reporting program to construct a replacement sewer lift station, sewer support bridge, force & gravity main, and associated pipelines (SLS) south of Chinquapin Avenue to the Encina Water Pollution Control Facility (EWPCF) within easements on public and private property and within the right-of-way of Avenida Encinas. LEGAL DESCRIPTION: A portion of properties within easements identified as Assessor's Parcel Number 210-010-09. 210-010-26. 210-010-41, 210-010-42, 210-011-05 and public right- of-way on a portion of Avenida Encinas. APN: 210-010-09. 210-010-26, 210-010-41, 210-010-42 and 210-011-05. Acres: The project extends approximately 12,380 linear feet (2.35 miles) in a north-south direction. The lift station is located on an approximate 2.3 acre area on the northeast end of the Encina Power Station (EPS), which is approximately 95 acres. Proposed No. of Lots/Units: N/A GENERAL PLAN AND ZONING Existing Land Use Designation: 1) BNSF railroad r-o-w has a Transportation Corridor (TC) designation; 2)_EPS and SDG&E have a Public Utilities (U) designation; 3) Property owned by West Real Estate LLC has a Travel/Recreation Commercial (T-R) designation; and 4) the public right-of-way on Avenida Encinas has a Secondary Arterial designation. Proposed Land Use Designation: N/A Density Allowed: N/A Density Proposed: N/A Existing Zone: 1) BNSF railroad r-o-w has a Transportation Corridor (T-C) designation; 2)_EPS and SDG&E have a Public Utilities (P-U) designation; 3) Property owned by West Real Estate LLC has a Commercial Tourist - Qualified Overlay (C-T-Q) designation; and 4) the public right- of-way on Avenida Encinas has a Secondary Arterial designation. Proposed Zone: N/A Revised 01/06 Surrounding Zoning, General Plan and Land Use (EPS only. The piping to the north and south of the EPS is surrounded by industrial, commercial, residential, transportation and open space General Plan and zoning designations and current land uses): General Plan Site North South East West P-U o-s P-U T-C O-S U OS U TC OS Current Land Use Power Station Open Space (lagoon) Industrial Highway (1-5) Open Space (beach) LOCAL COASTAL PROGRAM Coastal Zone: [X] Yes | | No Local Coastal Program Segment: Mello II & Agua Hedionda Land Use Plan Within Appeal Jurisdiction: [X] Yes I I No Coastal Development Permit: [X] Yes [~] No Local Coastal Program Amendment: I I Yes [x] No Existing LCP Land Use Designation: U* Existing LCP Zone: P-U* Proposed LCP Land Use Designation: N/A Proposed LCP Zone: N/A (*EPS only; other LCP land use designations and zoning for the remainder of the project are similar to the surrounding zoning and General Plan designations north and south of the EPS as identified above.) PUBLIC FACILITIES School District: Carlsbad Unified Water District: Carlsbad Sewer District: Carlsbad Equivalent Dwelling Units (Sewer Capacity): N/A ENVIRONMENTAL IMPACT ASSESSMENT f~~| Categorical Exemption,_ D Mitigated Negative Declaration, pending City Council adoption Certified Environmental Impact Report, dated Other, Revised 01/06 CITY OF CARLSBAD GROWTH MANAGEMENT PROGRAM LOCAL FACILITIES IMPACTS ASSESSMENT FORM (To be Submitted with Development Application) PROJECT IDENTITY AND IMPACT ASSESSMENT: FILE NAME AND NOS: Agua Hedionda Sewer Lift Station. Force Main and Gravity Sewer Replacement - POP 00-02(CVSP 144CLVRP 10-26/CDP 10-17/HDP 10-05/SUP 10-02/HMP 10-03 LOCAL FACILITY MANAGEMENT ZONES: 1.3&22 GENERAL PLAN: Public Utilities (U) - EPS only. The piping to the north and south of the EPS is surrounded by industrial, commercial, residential, transportation and open space General Plan designations. ZONING: Public Utilities (T-LD - EPS only. The piping to the north and south of the EPS is surrounded by industrial, commercial, residential, transportation and open space zoning designations. DEVELOPER'S NAME: City of Carlsbad ADDRESS: 1635 Faradav Avenue. Carlsbad. CA 92008 PHONE NO.: (760) 602-2765 ASSESSOR'S PARCEL NOS.: 210-010-09. 210-010-26. 210-010- 41. 210-010-42 and 210-011-05 QUANTITY OF LAND USE/DEVELOPMENT (AC., SQ. FT., DU): The project extends approximately 12,380 linear feet (2.35 miles) in a north south direction. The lift station is located on an approximate 2.3 acre area on the northeast end of the EPS, which is approximately 95 acres. ESTIMATED COMPLETION DATE: Unknown at this time A. City Administrative Facilities: Demand in Square Footage = N/A B. Library: Demand in Square Footage = N/A C. Wastewater Treatment Capacity (Calculate with J. Sewer) <1 EDU D. Park: Demand in Acreage = N/A E. Drainage: Demand in CFS = <3 CFS Identify Drainage Basin = B_ (Identify master plan facilities on site plan) F. Circulation: Demand in ADT= J_ (Identify Trip Distribution on site plan) G. Fire: Served by Fire Station No. = ]_ H. Open Space: Acreage Provided = N/A I. Schools: N/A (Demands to be determined by staff) J. Sewer: Demands in EDU <1 EDU Identify Sub Basin = 3A (Identify trunk line(s) impacted on site plan) K. Water: Demand in GPD = <220 GPP The Growth Management Dwelling unit allowance is not applicable to this project. ATTACHMENTS Page 1 Construction Details for Agua Hedionda Sewer Lift Station, Force Main and Gravity Sewer Replacement Project The project can be described in segments beginning from the upstream (north) end as indicated below. Project Description North Segment - North End to SLS Pipelines At the north end of the project, the existing approximate 1,400 ft. length of 42-inch gravity sewer pipe will be removed and replaced with a new 54-inch gravity sewer pipe, placed in effectively the same location as the removed line along much of this segment. This new pipe will connect to the existing VC-11 line coming from the north to collect sewage from the existing sewer trunk pipe at a point approximately 500-feet south of Chinquapin Avenue immediately east of the San Diego Northern Railroad (SDNR) tracks, within the railroad ROW. The line will then travel south from this northerly connecting point, within an existing berm that will be re-graded to widen and raise the berm height with fill soil an additional 3-feet in elevation. This additional grade is needed to provide sufficient soil clearance over the new (larger) pipe. This berm parallels the railroad tracks on their east side. As proposed, the sewer main will then travel southerly through the berm (adjacent to the existing YMCA facility), and cross over Agua Hedionda Lagoon on a new bridge to be constructed of weathering steel material and connect to the new SLS located on the northern end of the EPS site. The 12-inch recycled water line, and a 6-inch potable water line (which will replace an existing 3- inch line), will both be installed parallel to the sewer line along this route and also will attach to the new bridge. Proposed Support Bridges The proposed sewer line support bridge across the lagoon channel connecting the outer and middle basins of Agua Hedionda Lagoon will be held up by concrete bridge abutments, including associated retaining walls, on each side of the channel. With a horizontal clear span of 140-feet, and a clear height of approximately 17-feet above channel water level, the bridge will span the entire width of the channel. The bridge features a weathering steel material similar in material and appearance to the several golf cart bridges at The Crossings golf course. The 54-inch gravity sewer line will be semi- enclosed and partially visible within the horizontal housing of the bridge structure. However, the project has been conditioned to screen the pipe, either by painting the pipe to match the weathered steel color of the bridge or some type of screening wall within the bridge. The bridge will be constructed of sufficient size and strength to also accommodate the 12-inch recycled water line, the 6-inch potable water line, a maintenance vehicle crossing road, a 12-inch high-pressure gas line and the future Coastal Rail Trail. The maintenance vehicle road, which will also serve as the future trail, will feature 42-inch hand safety railing. The bridge abutments will have heights up to 23.5 feet to support the bridge on each side of the channel. These abutments will result in up to 2,400 square feet (each side) of visible concrete wall. Construction of the northerly bridge abutment will require relocation of 160 linear feet of the existing 12-inch natural gas line north of the bridge to connect back with the existing line south of the southerly abutment. The abutment walls will be stained earthtone colors to match the proposed SLS and include textured geometric patterns with anti-graffiti coating. Natural plantings will also be established in front of the walls in order to achieve a general visual blending with the surrounding natural landscape. However, the bridge will still be visible to motorists travelling southbound on 1-5, ATTACHMENTS Page 2 from an approximate 1,600 foot distance, and from train passengers from a horizontal distance of approximately 90 linear feet away. As an option, SDG&E may relocate the gas line from its existing aged trestle bridge onto the new sewer line bridge. Approximately 20 linear feet of this gas line will also be relocated from its existing alignment and lowered 5-feet to cross under the proposed temporary 42-inch by-pass pipeline on the southern side of the lagoon. If it is decided to relocate the gas line alignment across the lagoon channel, the existing segment suspended directly above the channel water surface is expected to be demolished and removed once the gas line is realigned to suspend within the new bridge structure. Once the new sewer line is operational, the existing, aged bridge carrying the existing 42-inch sewer main across the lagoon channel will be removed from the site. Optionally, the high pressure natural gas transmission line support bridge will also be removed if the line is relocated to the sewer bridge. Demolition of Existing Support Bridge (s) The project also involves the removal of the existing trestle bridge structure which supports the existing 42-inch sewer pipe in the same approximate area of the channel. This bridge structure contains eight (8) narrow bridge support/pilings which presently sequence across and into the bottom of the Agua Hedionda Lagoon channel. These support/pilings are 14-inches in diameter, and set into concrete situated as deep as approximately 20-feet below the mud line on the bottom of the lagoon. Also, the four wood piles (telephone pole-type supports, two on land and two in the channel) cross- supporting the existing 12-inch high pressure gas transmission line may be removed from the channel if the gas line is relocated to the new bridge structure. Once removed, the piling holes will partially collapse and then fill with sand and sediment from the tidal action through the channel. SLS The new, replacement SLS will be located on an approximate 2.3 acre area on the north end of the EPS site, on property owned by the NRG Corporation. The SLS will replace the existing station in the approximate same area, which was constructed in 1964 and rehabilitated in 1989, and is nearing the end of its useful life. This existing lift station and its concrete overflow basin will be demolished and removed. The overflow basin will subsequently be filled with soil and vegetated with native or otherwise drought-tolerant vegetation. The new SLS will involve a series of three structures (two of which will be primarily underground). These structures will be constructed mostly underground in an area approximately 80 to 100-feet southeast of the existing station. These three structures are the main lift station, a smaller grinder facility, and a still smaller bio-filter (90% underground) structure. The large, main lift station will be fitted into the terrain of the site with exterior walls functioning as soil retaining walls, resulting in the facility being situated mostly below grade, with only the south and western walls being readily visible at heights up to 25.5 feet. The lift station structure will be stained earth-tone colors, with wall texturing for shadowing, and will include anti-graffiti coating. Landscaping will also enhance the SLS and soften its appearance. The landscape palette includes trees, shrubs, and ground covering. The SLS will be designed with two major sections; the "lift side", which serves to raise the incoming sewage vertically from an approximate incoming elevation of 18 feet msl up to 42-feet msl, and the "force main side", which will push the sewage horizontally down (southward) the proposed force main to connect to a new gravity line at a location south of Cannon Road in Avenida Encinas. The lift station is designed to convey the anticipated build-out demand of the line of 33 mgd (PWWF) of wastewater per day. The SLS structure will include the sewage pumps, a generator room, an electrical room, a bio-filter odor control system, a meter vault, a grinder facility, and accessory appurtenances. Noise abatement measures, including extensive insulation and sound enclosures will be provided. Multiple redundant features in facility design (sewage conveyance, power sources, etc.) ATTACHMENTS Page 3 intended to avoid the risk of accidental sewage spill are included in the design. These redundant features include a lift station configuration that includes two independent pumping elements; the "lift" side and the "force main" side which can independently pump dry weather flows, and back-up power redundancy including an on-site power generator. A black vinyl coated chain-link fencing and technological and mechanized security, including security alarms, will surround the entire SLS facility site. Upon completion of the new SLS and pipelines, the old lift station will be demolished and removed. Middle Segment - Between SLS and Cannon Road The routine low and average volume sewage effluent flows exiting the lift station will flow down a 300-foot length of new 42-inch gravity connector line which will connect from the new lift station to a new junction with the existing southbound 42-inch gravity line. This existing 42-inch gravity line along this segment has been determined to be in satisfactory condition, and the routine (low and average volume) sewage flow will then utilize this existing 42-inch gravity line southward all the way to the EWPCF. As a result of this new lift station connection re-routing; an approximate 200- foot long segment of the existing 42-inch sewer line (situated between the existing lift station and the new junction location) will be abandoned in place. For higher sewage flows, however, a new 30-inch force main pipe will be installed parallel to the existing 42-inch connecting gravity pipe, from the lift station southerly approximately 3,960 feet to a point approximately 300-feet south of Cannon Road in Avenida Encinas. As indicated, it is intended that the existing 42-inch gravity line will carry the low and average-volume sewage flows, and the 30-inch force main line will be used for high flow periods only. This 30-inch sewer force main line will travel parallel to the existing 42-inch gravity line, from the SLS south along an existing dirt access road within the Encina Power Plant property, across mostly vacant land owned by SDG&E, and into the north extension of the Avenida Encinas roadway stub street that serves the West Resort. The force main will then travel down the approximate middle of this stub street to cross Cannon Road within Avenida Encinas. The 30-inch force main will be installed via trenchless construction tunneling techniques either by horizontal directional drilling (HDD) or micro-tunneling, and the 12- inch recycled water line will be installed via standard open trench construction. The HDD method allows boring of a hole of sufficient size through use of a steerable pilot hole through the ground and then a series of increasingly large drill bits along the horizontal alignment and vertical elevation required for the pipe. The drill is guided by electro-magnetic or GPS signals which direct the drill bit. This HDD method allows the installation of the pipeline at the proper underground elevation and alignment without open trench disturbance to the surface of the ground. A "drillers mud" (bentonite clay slurry) will be pumped into the void behind the drill bit. Bentonite is a natural mineral, which serves to cool and lubricate the drill bit as well as stabilize and seal the drill hole against seepage and tunnel wall cave-ins until the pipe is stable. The recycled water line along this route will however, be constructed at a much shallower depth (5-feet below grade surface), and thus it will be laid via standard open trench construction. South Segment - Cannon Road to EWPCF The proposed sewer force main and 12-inch recycled water line will cross Cannon Road at its intersection with Avenida Encinas. Across (south of) Cannon Road, the force main will end and connect to a new 54-inch gravity sewer, which will travel south within the roadway center median of Avenida Encinas to the intersection with Palomar Airport Road. South of the Palomar Airport Road/Avenida Encinas intersection, the pipeline will travel down the southern extension of Avenida Encinas to a point where it will connect directly to sewer pipes extending into the existing EWPCF. ATTACHMENT 12 Page 4 With the exception of the weathering steel bridge structure and pipelines it supports over the Agua Hedionda Lagoon channel, the lift station structures, and sewer manhole covers, the project will be wholly underground. The project will occur along relatively level terrain, with ground surface elevation varying only between elevation 35-feet mean sea level (MSL) at the north end of the project and 30-feet MSL at the EWPCF. The SLS is proposed on an isolated area of sloping topography, with a proposed finish floor elevation of 32-feet MSL. Operational Details Odor Control The project will employ odor controls similar to those installed in similar with modern facilities within Carlsbad; however, the existing lift station does not have odor control. Odor control treatment at the SLS will include bio-filtration air scrubbers. These features remove odors and volatile organic compounds from the sewage transport process. Sewer line manhole covers will be "sealed" as needed to not allow escape of gaseous vapors. Odor control performance will be constantly monitored and maintained by EWA and the City of Carlsbad sewer maintenance crews. Noise Control Presently, the primary noise source in the vicinity of the proposed project alignment is noise generated by vehicular traffic on 1-5, Avenida Encinas, Cannon 'Road, Palomar Airport Road and Carlsbad Boulevard, trains on the BNSF railroad tracks, and Encina Power Plan equipment. The land uses around the lift station are industrial (power generating plant) in nature, which is considered in the Noise Guidelines Manual as a "General Industrial, Manufacturing or Utilities" land use. Noise exposure levels for this use are higher than those allowed for residential uses, up to 80 dBA CNEL as being "conditionally acceptable". Furthermore, the lift station will include noise abatement features to address the noise that will emit from the supply and exhaust fans, air conditioning unit, and emergency generator(s). Noise abatement measures for this equipment will include sound enclosures and insulation, noise attenuation panels around generator rooms, and exhaust manifold silencers for the generators. The below-grade design of the lift station will also serve to reduce noise impacts. As a result of these factors, the operational noise levels generated by the project are anticipated to comply with City of Carlsbad Draft Noise Guidelines Manual land use noise levels, the City permitted construction noise levels and hours, and County of San Diego Noise Policy standards. Water Quality Control With regard to water quality protections, the sewer pipelines will be placed underground in a non- porous pipe, and as a result no substantive post-development (permanent) Best Management Practices (BMPs) for the pipeline are necessary. The SLS however, is designed with site design BMPs consisting of source control and treatment control features in order to protect any adjacent downstream waters, such as Agua Hedionda Lagoon, from potential pollution. Specifically, the SLS site design BMPs will involve a multiple-treatment program, including four different main treatment systems, as follows: 1. Vegetated or river rock swale. A vegetated or river rock swale will be located to accept site drainage along the southeast side of the project. This swale will treat runoff from the site through filtering by the vegetation in the channel, filtering through a subsoil matrix, and further filtration into the underlying soils. ATTACHMENTS Page 5 2. Pervious surfaces. Pervious gravel or earthen cover will be utilized over a portion of the lift station site. These surfaces will capture stormwater and allow it to infiltrate into the ground instead of running off the surface, and off of the site. 3. Infiltration basin. An infiltration basin will be located at the south end of the site. This basin will be designed to use the natural filtering ability of the soil to remove pollutants from site stormwater runoff. SLS Equipment Redundancy. The SLS is designed to handle full anticipated build-out demand (33 mgd PWWF) of the service area. The SLS design also incorporates extensive equipment redundancy for ensuring that equipment failures do not result in sewage spills. The redundancy concept involves a lift station configuration that includes two independent pumping elements; the "lift" side and the "force main" side. The lift side of the station includes four 40 hp pumps. The force main side of the station includes four 100 hp pumps. The total pumping capacity of the station is up to 23.5 mgd on the lift side and up to 26.5 mgd on the force main side. The total station capacity is 50 mgd providing 50% redundancy at PWWF conditions (33-mgd) and over 100% redundancy at PDWF (21 mgd). The force main side and lift side can independently pump PDWF (21 mgd). In the event that a total mechanical failure occurs on either side, the station will remain operable without consequences under PDWF conditions, and contains power redundancy and significant upstream storage capacity (both described below) under catastrophic circumstances were they to occur under peak wet weather conditions. SLS Electrical Redundancy. The station is also equipped with multiple redundant features in terms of emergency back-up power. It is designed with two independent electrical circuits (primary and secondary) plus a generator, for a total of three independent power sources and will include an automatic standby transfer switch in the event of catastrophic electric failure. In the event of full regional blackout, emergency power will be provided by a built-in onsite diesel fuel generator. Under such emergency conditions, the generator will provide power to all SLS facilities. The generator has the capacity to store enough fuel for 24 hours of operation. Under such circumstances, the station is designed with alarms to alert officials to any electrical problem and to enact the contingency plans to reduce flow into the SLS (upstream lift stations contain storage volume) under such circumstances, if necessary. The upstream pipe also contains a significant amount of storage capacity, which can gradually fill up to allow the time necessary to resolve a problem, should it occur. Hazardous Materials. Outdoor material storage areas, including the future chemical storage area at the SLS will be designed to reduce pollution introduction. Hazardous materials with the potential to contaminate urban runoff will be; 1) placed in an enclosure such as, but not limited to, a cabinet, shed, or similar structure that prevents contact with rain, runoff or spillage to the storm water conveyance system; and 2) protected by a surrounding series of secondary containment structures such as berms, dikes, or curbs. The storage area will be paved and sufficiently impervious to contain leaks and spills, and will also be designed with a roof or awning to minimize direct precipitation onto and within the secondary containment area. Construction Description As mentioned previously, the project will be constructed in three phases. The schedule for construction of these phases could be separate, could overlap, or could be constructed simultaneously. Re-routing of the 12-inch high pressure natural gas transmission line, installation of the 12-inch recycled water line, and replacement of the 3-inch potable water line with a 6-inch water line is anticipated to occur with each adjacent segment of sewer construction; however, as noted ATTACHMENT 12 Page 6 earlier, it is likely that only the portion of recycled water line between Cannon Road and Palomar Airport Road will be constructed and pressurized with the sewer line due to funding limitations. The construction/installation of the pipeline portions of the project will be accomplished through both conventional open-trench method, and through trenchless construction tunneling techniques (i.e.; horizontal directional drilling and micro-tunneling). Trenchless construction/tunneling of the sewer lines will be used in areas where a high number of existing underground utilities must be avoided, or where open trenching would result in traffic disruption in high traffic areas, such as through the Cannon Road and Palomar Airport Road intersections with Avenida Encinas. Construction will occur in three phases, with the middle portion of the project at the EPS facility being last. Phase 1 includes improvements from a point approximately 300-feet south of Cannon Road to the southern limit of the project at the EWPCF. Phase 2 encompasses construction from the north end of the project near Chinquapin Avenue to the southern abutment of the proposed sewer line support bridge over Agua Hedionda Lagoon, located just north of the SLS. The third phase of construction would extend from the south end of the support bridge to the north end of the Phase 1 improvements just south of Cannon Road. Construction Phasing Phase 1. Phase 1 involves installation of the gravity sewer main from a point approximately 300-feet south of Cannon Road to the southern limit of the project at the EWPCF. At the upstream end of Phase 1, the sewer line will be installed via standard open trenching construction method. The trenching will be accomplished within the existing Avenida Encinas hardscape median southerly to a point approximately 1,500 feet northerly of Palomar Airport Road. At this point, microtunneling trenchless construction will be used to burrow the sewer line under and beyond the Palomar Airport Road intersection, to a point where it will exit approximately 650 feet south of the intersection. Microtunneling construction necessitates the temporary placement of jacking and receiving pits (approximately 20-feet wide by 40-feet long and 12-feet wide by 20-feet long, respectively) at the beginning and end of each tunneling segment length. The remaining length (approximately 1,500 feet) of the alignment south of Palomar Airport Road to the EWPCF will be installed through open trench construction within the Avenida Encinas roadway pavement area. All of the recycled water line installation will be via open trench method. Phase 2. Phase 2 begins at the northern end of the project. Temporary chain link fencing will be placed around the perimeter of the work area. The sewer line alignment between the northerly connection and the channel bridge location will be graded. This grading will necessitate the import of approximately 7,000 cubic yards of fill soil so that the existing berm can be widened and heightened (by approximately 3-feet) to accommodate the soil cover necessary for the larger (54- inch) proposed underlain pipe. A temporary above-grade by-pass pumping system which will run along the western edge of the work zone will be utilized during the construction period to convey sewage while the existing, aged 42-inch sewer pipe is removed. This temporary by-pass system will involve an 18-inch temporary bypass pipe with multiple pumps, situated at the north end of the project, routing to the existing lift station. Southward, the new 54-inch sewer pipe, 12-inch recycled water line and 6-inch potable water line will then be laid across the Agua Hedionda channel via the proposed pipe support bridge. This will involve the setting of a weathered steel bridge with concrete vertical abutment supports on both the north and south sides of the channel. The bridge will completely span the entire channel width so that no work is needed within the 100-year flood elevation. Bridge construction will involve approximately 800 cubic yards of excavated cut soil for the bridge abutments and footings. The ATTACHMENT 12 Page 7 existing 12-inch high-pressure natural gas transmission line will be relocated to avoid the northerly bridge abutment in this area. Overhead electrical distribution facilities will be relocated as needed to provide continued service to existing customers, and minimize construction activity interference. The bridge abutments will be constructed of concrete, and are designed with supporting retaining walls up to 23.5 feet in height. Phase 3. Phase 3 improvements include the sewer line from the southern end of the bridge to the SLS, construction of the SLS and appurtenances, installation of a new 300-foot long connector sewer line segment between the new SLS and the existing 42-inch gravity line traveling south from the existing lift station, and installation of the force main between the new lift station and the north end of the Phase 1 improvements. The bulk of the improvements on the south side of the Agua Hedionda Lagoon channel will be installed through the excavation and construction of the SLS structure, and related piping, ducting, conduits and appurtenances. The majority of the construction work will take place on and around the SLS site. Temporary fencing will be placed around the perimeter of the SLS work area. Soil excavation at the SLS will involve approximately 40,000 cubic yards of soil excavation and 14,000 cubic yards of soil filling, which will result in a net 26,000 cubic yards of soil to be exported from the SLS location. From the south end of the SLS to a point south of Cannon Road (approximate 3,960 linear feet), the sewer line will be installed via a HDD method. This method allows boring of a hole of sufficient size through use of a steerable pilot hole through the ground and then a series of increasingly large drill bits along the horizontal alignment and vertical elevation required for the pipe. The drill is guided by electro- magnetic or GPS signals which direct the drill bit. This HDD method allows the installation of the pipeline at the proper underground elevation and alignment without open trench disturbance to the surface of the ground. A "drillers mud" (bentonite clay slurry) will be pumped into the void behind the drill bit. Bentonite is a natural mineral, which serves to cool and lubricate the drill bit as well as stabilize and seal the drill hole against seepage and tunnel wall cave-ins until the pipe is stable. The recycled water line along this route will however, be constructed at a much shallower depth (5-feet below grade surface), and thus it will be laid via standard open trench construction. Other Construction Details Traffic Control. Work within the public streets will involve temporary control of traffic through the work activity zone, as normal traffic flow and patterns will be disrupted, primarily within Avenida Encinas. This work activity zone will be marked by signs, pavement markings, delineators and other devices to provide visibility to the drivers, bicyclists and pedestrians in order to provide a safe and efficient route through the work zone area. Detour routes will be provided as necessary. Avenida Encinas is a four lane secondary arterial north of Palomar Airport Road and at least one lane each direction will be kept open to traffic at all times. South of Palomar Airport Road, Avenida Encinas becomes only two lanes (one each direction) and thus short segments of the roadway could be closed for short periods to all except local traffic. Along the sewer line construction lengths to be constructed through trenchless (tunneling) methods, minimal or no impact to driveways or business operations will occur. Open trenching across the Cannon Road and Palomar Airport Road intersections for the 12-inch recycled water line will take place in one-lane segments so that only a single lane is closed to traffic at any time. Lane closures across these busy roadways will be of short duration (3-days) since the recycled water line involves only a relatively shallow 5-foot deep trench. This recycled water line installation may occur during nighttime hours to minimize disruption to traffic flow and local businesses. Upon completion of open trenching backfill, the trench area will be promptly capped with asphalt to return the roadway to a smooth driving surface. ATTACHMENTS Page 8 Equipment Staging Areas. Machinery necessary to accomplish the trenching and pipe laying work will be stored on existing adjacent pads and within closed lanes of the street. Specifically, the major staging areas for pipes, machinery, materials and tools will be on; (a) the cleared area near the railroad tracks at the north end of the project; (b) on the graded pad at the YMCA site, (c) immediately east of the proposed SLS site, and (d) the triangular shaped parcel owned by the City of Carlsbad at the southwest corner of Avenida Encinas and Palomar Airport Road and east of the railroad tracks. Backhoe and similar rubber-tire machinery will be primarily utilized for open trenching, with the spoils temporarily laid directly adjacent to the trench. No machinery staging areas will be located within sensitive biological habitat areas. Grading. During the construction period, a total of approximately 77,471 cubic yards of soil and gravel will be graded or trenched. Approximately 39,056 cubic yards of this excavated soil will be used to back-fill necessary portions of the project. The remaining 38,579 cubic yards of this soil will be exported to an acceptable offsite location. Where necessary, some high quality bedding soil (7,069 cubic yards) and gravel (7,767 cubic yards) will be imported to the site to be placed above and below the pipeline (within the trench) to protect the proposed sewer line. Bedding material will be consolidated and compacted under and around the new sewer pipe and fill material will be evenly spread and moistened or aerated, as required. Backfill material will be deposited in uniform horizontal layers, and compressed to produce a specified relative compaction. Construction Erosion Control. The construction activities will include appropriate temporary erosion and sediment control protections so that all exposed soil in the area of the construction will be protected from erosion. This will include silt fences, sandbags and straw mulch rolls being placed around excavated trench spoils during the construction period. Also, all storm drains and natural drainages situated downstream from the construction will be protected by linear sediment barriers or similar erosion control devices. Weather monitoring will take place in order to avoid exposed soils during times of heavy rainfall. The streets within and around the construction site will be swept and maintained regularly during the construction period. The project will comply with the requirements of the State Construction General Permit, Order No. 2009-0009-DWQ. ATTACHMENT 13 Page 1 COMPLIANCE OF SEWER LIFT STATION WITH DEVELOPMENT STANDARDS Standard Permitted Uses Conditional Uses Minimum Lot Area Existing Code Standard: • 7,500 square feet Lot Coverage Existing Code Standard: • All buildings and structures shall cover no more than 50% of the area of the lot. Parking, Loading, and Refuse Collection Areas Existing Code Standard: • No parking or loading areas in a front, side or rear yard adjoining a street; or within 10' of an interior side or rear property line. PDF standards: • Parking, loading, and refuse areas should be visually screened from public view by existing fencing and landscaping; • Parking, loading, and refuse areas should be placed at building rear and sides; • Outdoor refuse and loading areas visible from public areas should be visually screened, as necessary, to a height up to 10- foot high. Source of Requirement Municipal Code Section 21.36.020; South Carlsbad Coastal Redevelopment Plan (SCCRP) Section 601; POP Section IV, which references Code and SCCRP and also requires POP consistency. Municipal Code Section 21.36 - 21.36.1 10; PDP Section IV, which references Code and requires PDP consistency. Municipal Code Section 21.36 - 21.36.060; PDP Section IV (PDP incorporates Code standard). Municipal Code Section 21.36 - 21.36.070; Proposed PDP Section IV (PDP incorporates this standard). Municipal Code Section 21.36 - 2 1.36.080; PDP Section IV. Compliance? Yes N/A (no CUP uses proposed) Yes Yes Yes Comments • Wastewater treatment facilities are a permitted use per Municipal Code Section 2 1.36. 020. • SCCRP Section 601 states the land uses permitted by the SCCRP shall be those permitted by the General Plan and zoning ordinance; therefore, the proposed SLS is permitted in the Redevelopment Area only if: • Redevelopment Permit approved • Precise Development Plan approved • Finding of "Extraordinary Public Purpose" made. • Existing CUP uses within PDP, including cellular facilities and aquaculture farm, are presumed to have valid CUPs. • Uses are subject to Municipal Code and PDP standards per Section IV. • The proposed SLS sits on an approximate 2.3 acre area within Planning Area 2. • Lot coverage of entire 95-acre PDP area, with proposed SLS, is approximately 16%; • The SLS buildings and hardscaping cover approximately 13.5% of the 2.3 acre lift station easement area. • There are no yard standards established in the Code. • The SLS site is not adjacent to any street or within 10' of an interior property line. • Proposed SLS will not generate any traffic, other than a daily visit for observation monitoring by a wastewater technician and infrequent maintenance operations. • No refuse collection or-loading areas are proposed for the SLS site. ATTACHMENT 13 Page 2 COMPLIANCE OF SEWER LIFT STATION WITH DEVELOPMENT STANDARDS CONTINUED Standard Source of Requirement Compliance?Comments Landscaping Existing Code Standard: • Except for approved ways of ingress and egress and parking and loading areas, all required yards shall be irrigated and permanently landscaped with at least one or a combination of more than one of the following: Lawn, shrubs, trees, and flowers; • No walls or fences over four feet in height may be constructed in any area where landscaping is required. PDF standards: • Landscaping shall comply with existing standards; • Where visible to the public, plant sizes shall meet minimums specified in City landscape manual; • Landscaping adjacent to Carlsbad Boulevard and the NCTD railroad corridor shall be consistent with scenic corridor guidelines to enhance the area's visual character; • Parking visible from Carlsbad Boulevard shall be screened; • Removed, dying, or diseased perimeter trees and shrubs shall be replaced with equivalent material. Municipal Code Section 21.36 • 21.36.090; POP Section IV. Yes • There are no yard standards established in the Code; instead the POP establishes setbacks, but only along portions of the EPS perimeter. See discussion under "Setbacks" below. • Perimeter landscaping is well established along the lagoon and Interstate ,5. • A landscape plan for the proposed SLS is included in the plan set and will include 15 gallon and 24 inch box trees, shrubs and ground cover. • There are no proposed specific parking areas. One maintenance vehicle per day is expected at the facility and will not be readily visible from 1-5 or Carlsbad Boulevard. • Landscaping along the NCTD corridor is acceptable. • As detailed below, the SLS exceeds setback requirements of the POP. Grading Existing Code Standard: • None, except City may impose special grading instructions per Code section cited. POP standards: • Grading in visible areas should utilize natural contour grading to preserve and enhance the natural appearance; • Grading shall comply with all City and Coastal Commission Requirements. Municipal Code Section 21.36 - 21.36.050 (6); POP Section IV. Yes • The SLS facility is primarily underground. In order to accommodate the SLS, the lift station site will be excavated to approximately 20 feet below existing grade, with two of the walls (north and east) of the main structure backfilled to submerse the structure below grade to the degree feasible. As a result, the SLS structure will be constructed mostly below the surrounding finish ground level; thereby, preserving the natural contours of the hillside and enhance the natural appearance. • Proposed grading is conditioned to comply with all requirements. ATTACHMENT 13 Page 3 COMPLIANCE OF SEWER LIFT STATION WITH DEVELOPMENT STANDARDS CONTINUED Standard Source of Requirement Compliance?Comments Architecture and Building Materials Existing Code Standard: • None, except City may impose special requirements per Code section cited. Existing Encina Specific Plan Standard: • All buildings shall be subject to architectural review to assure a maximum amount of design compatibility with the neighborhood and existing facilities. • POP standards: Form and design of any new buildings to be largely determined by visibility from locations surrounding the Power Plant and applicable government requirements; • Building materials and finish should also reflect neighborhood compatibility; • Planning Director may determine compliance with standards is unnecessary based on other agency requirements or function, nature, and location of project. Municipal Code Section 21.36 - 21.36.050; Encina Specific Plan 144; POP Section IV. Yes • As stated above, the SLS structure will be constructed mostly below the surrounding finish ground level. The structures will have a flat roof. As such, the building is a series of square and rectangular shapes architecturally articulated to vary building elevations and facade from the view of the rail passengers travelling through the city. The exterior of the structure will include a textured geometric pattern and be stained earthtone colors in order to blend in with the natural surroundings. ATTACHMENT 13 Page 4 COMPLIANCE OF SEWER LIFT STATION WITH DEVELOPMENT STANDARDS CONTINUED Standard Source of Requirement Compliance?Comments Setbacks Existing Code Standard: • None, except City may impose setbacks, yards, and open space per Code section cited. Proposed POP standards: • Minimum 50-foot setback from Carlsbad Boulevard right of way; • Minimum 50-foot setback from property line along Agua Hedionda Lagoon shoreline; if blufftop is greater than 50-feet from property line, the top of the bluff shall mark the minimum lagoon setback; • Minimum 25-foot setback from Interstate 5 right of way; • No setbacks established from the south Power Station boundaries or from interior property lines; • Planning Director may determine compliance with standards is unnecessary based on other agency requirements or function, nature, and location of project; • Setback requirements do not apply to potential Coastal Rail Trail alignments, desalination facility pipeline alignments, detention basins, piping, and underground structures unless determined necessary for public health, safety, and welfare purposes by the Planning Director. Municipal Code Section 21.36 - 21.36.050 (1); POP Section IV. Yes • The PDP establishes minimum yard or setback requirements of 50-feet from property lines along Carlsbad Boulevard and Agua Hedionda Lagoon shoreline and 25-feet from Interstate 5. These proposed setbacks establish yards along the north, east, and west PDP boundaries. There is no setback established along the south property line (common with the SDG&E Operations Center) or along the railroad corridor. • The SLS complies with setback requirements; the SLS site at its closest points are approximately 140 feet from Agua Hedionda Lagoon shoreline, about 1,400 feet from Carlsbad Boulevard, about 500 feet from Interstate 5, and over 3,300 feet from Cannon Road. • Proposed piping and underground structures are not subject to setbacks. Parking Existing Code Standard: • None, except City may impose parking requirements per Code section cited. PDP standards: • Because of unique uses at Power Station, parking needs may require case-by-case analysis based on number of employees, hours of operation, etc; • When applicable, Zoning Ordinance parking standards shall be followed. Municipal Code Section 21.36 - 21.36.050 (11); PDP Section IV. Yes • Parking provided for the SLS is more than adequate to accommodate one maintenance vehicle per day and does not affect parking provided for the power plant. ATTACHMENT 13 PageS COMPLIANCE OF SEWER LIFT STATION WITH DEVELOPMENT STANDARDS CONTINUED Standard Source of Requirement Compliance?Comments Building Height Existing Code Standard: • None, except City may impose height requirements per Code section cited. Existing Encina Specific Plan Standard: • 35-feet. Existing Agua Hedionda Land Use Plan Standard: • 35-feet. POP standard: • None. • Note: No standard includes a maximum number of building stories. Municipal Code Section 21.36 - 21.36.050 (2); Encina Specific Plan 144; Agua Hedionda Lane Use Plan. Yes • Agua Hedionda Land Use Plan height standard adopted in 1982, after completion of the Power Plant generating building and 400-foot tall emissions stack. • Specific Plan 144 states: The heights of future power generating buildings and transmission line tower structures shall be of heights and of a configuration similar to existing facilities. All storage tanks shall be screened from view. No other structure or building shall exceed thirty five (35') feet in height unless a specific plan is approved at a public hearing. • The tallest structure of the SLS is 25.5 feet high, excluding rooftop mechanical equipment and screen. Equipment and Storage Tank Screening Existing Code Standard: • None, except City may impose screening requirements per Code section cited. Existing Encina Specific Plan Standard: • Roof mounted equipment shall be screened; oil storage tanks shall be recessed and screened. POP standards: • None. Municipal Code Section 21.36.050; Encina Specific Plan 144. Yes • The SLS is conditioned to have all mechanical equipment screened. Lighting Existing Code Standard: • None, except City may impose lighting standards per Code section cited. Existing Encina Specific Plan Standard: • Exterior lighting shall be oriented so that adjacent properties shall be screened from glare or a direct light source; all ground lighting shall be arranged to reflect away from adjoining properties and streets. POP standards: • None. Municipal Code Section 21.36.050; Encina Specific Plan 144. Yes Low-intensity, downward facing, security lighting will be provided on the SLS site. The proposed project will not result in a significant new source of substantial light and glare and will not affect day or nighttime views in the area. CONSTRUCTION PLANS FOR AGUA HEDIONDA SEWER LIFT STATION, FORCE MAIN, AND GRAVITY SEWER REPLACEMENT PROJECT CITY OF CARLSBAD CARLSBAD, CALIFORNIA CITY COUNCIL MATT HALL -MAYOR ANNKULCHIN - COUNCIL MEMBER MARK PACKARD - COUNCIL MEMBER KEITH BLACKBURN - COUNCIL MEMBER FARRAH DOUGLAS - COUNCIL MEMBER USA HILDABRAND CITYMANACER GLENN PRUIM UTILITIES DIRECTOR NOVEMBER 2010 LOCATION MAP HOT TO SOU£ POP OWH <C) / SP H4 (L) / RP 1 (WO /COP 10-17 / HOP 1(H)5 / SUP 1M2 / HMP1MB BROWN Aim CALDWE LL 9665 ChosapeeJce Drive. Suite 200San Diego. Ca. 92123 •«' 11 CITY OF CARLSBAD 11 *"•"I |l ENGMEEEINOCtPAKnilEKT II zs COVER SHEET AGUA HEDIONDA SEWER LIFT STATION. FORCE MAIN. AND GRAVITY SEWER REPLACEMENT PROJECT GENERAL NOTES: 1. ALL WORK OF THIS CONTRACT SHALL. BE CONSTRUCTED IN ACCORDANCE WITH THE CITY OF CARLSBAD ENGINEERING STANDARDS. THE STANDARD SPECIFICATIONS FOR PUBLIC WORKS CONSTRUCTION, LATEST EDITION {GREEN BOOK) AND PROJECT TECHNICAL SPEC1FICATIONS. 2. CONTRACTOR SHALL REQUEST UNDERGROUND SERVICE ALERT (1-800422-4133) AND NON-MEMBER COMPANIES, OR UTILITIES TO MARK OR OTHERWISE INDICATE THE LOCATIONS) OFTHEIR SUBSURFACE FACILITIES INCLUDING. BUT NOT LIMITED TO STRUCTURES INCLUDING VAULTS, MAIN CONDUCTORS OR CONDUITS AND SERVICE CONNECTIONS. NOTICE SHALL BE AT LEAST 48 HOURS PRIOR TO STARTING WORK AND SHALL INCLUDE: A. SAN DIEGO GAS & ELECTRIC (600) £60-7343 B. PACIFIC BELL (600)802-0123 C.TIMEWARNERCABLE (760)438-7741 D. COX COMMUNICATIONS (760) 806-0809 E. CITY OF CARLSBAD (760) 434-2980 (STREETS & STORM DRAIN)* F. CITY OF CARLSBAD (760)439-2722 (SEWER. WATER A RECLAIMED WATER) .3. DEPTH AND LOCATION OF EXISTING UNDERGROUND FACILITIES SHALL BE DETERMINED BY THE CONTRACTOR BY POTHOUNG AND FIELD SURVEY OF ELEVATIONS PRIOR TO TRENCHING. THE CONTRACTOR SHALL ALSO CONTACT UNDERGROUND SERVICE ALERT (SCO) 4224133 PRIOR TO ANY EXCAVATION WORK. 4. CONTRACTOR SHALL LOCATE AND PROTECT IN PLACE ALL EXISTING UTILITY VALVE BOXES. MANHOLES, VAULTS, SEWER CLEANOLJTS, STORM DRAINS, STORM DRAIN GRATES. INLETS AND SURVEY MONUMENT BOXES. 6. THE CONTRACTOR SHALL KEEP A COMPLETE RECORD OF ALL CONSTRUCTION CHANGES AND SHALL MAKE INFORMATION AVAILABLE TO THE CITY OF CARLSBAD FOR PREPARATION OF 'AS BUILT DRAWINGS. 7. WHERE THE WATER MAIN AND SEWER CROSSES STORM DRAINS. OTHER PIPELINES, TELEPHONE AND ELECTRIC DUCTS. OR SIMILAR INSTALLATIONS. A MINIMUM OF 12 INCHES OF VERTICAL CLEARANCE SHALL BE PROVIDED BETWEEN THE MAIN OR SEWER AND OTHER INSTALLATIONS. 6. SEPARATION OF SEWER AND WATER LINES MUST COMPLY WITH AND SHALL MEET OR EXCEED THE REQUIREMENTS OF THE STATE OF CAUFORMA. DEPARTMENT OF HEALTH fl. THE CONTRACTOR SHALL VERIFY ALL EXISTING CONDITIONS WITHIN OR ADJACENT TO THE LIMITS OF WORK. THE CONTRACTOR SHALL TAKE ALL PRECAUTIONARY MEASURES NECESSARY TO PROTECT EXISTING IMPROVEMENTS FROM DAMAGE. ALL IMPROVEMENTS DAMAGED BY CONTRACTORS OPERATIONS SHALL BE EXPEDITIOUSLY REPAIRED OR RECONSTRUCTED TO THE OWNERS SATISFACTION AT THE CONTRACTOR'S EXPENSE WTTHOUT ADDITIONAL COMPENSATION. CONTRACTOR SHALL INFORM THE OWNER OF ANY UTILITY LINE THAT IS DAMAGED BY THE CONTRACTOR'S ACTIONS IMMEDIATELY AFTER DAMAGE OCCURS. 10. SURFACE IMPROVEMENTS DAMAGED OR REMOVED AS A RESULT OF THE CONTRACTOR'S OPERATIONS SHALL BE RECONSTRUCTED BY THE CONTRACTOR TO THE LOCAL GOVERNING AGENCY'S REQUIREMENTS. 11. CONTRACTOR SHALL PROVIDE EROSION CONTROL MEASURES TO CONTROL SOIL MOVEMENT SATISFACTORY TO THE OWNER. EROSION CONTROL MEASURES SHALL INCLUDE, BUT ARE NOT LIMITED TO: SLOPE PROTECTION, HYDROSEEDING, SANDBAGS, AND STORM DRAINS. 12. BLASTING IS NOT PERMITTED. 13. ALL REVISIONS TO THESE DRAWINGS MUST BE APPROVED BY THE CITY OF CARLSBAD. 14. IT IS THE CONTRACTOR'S RESPONSIBILITY TO PROTECT ANY STREET MONUMENTATION IN PLACE, IF ANY MONUMENT IS DISTURBED OR DESTROYED, THE CONTRACTOR WILL BE REQUIRED TO CONTRACT WITH A REGISTERED LAND SURVEYOR FOR THE RE-ESTABLISHMENT AND MAPPING OF THE DESTROYED MONUMENT. 16. ALL SEWERS SHALL BE LEAK TESTED, AIR TESTED, MANDREL TESTED AND CCTV INSPECTED PRIOR TO ACCEPTANCE BY THE CITY. LEAK TEST. AIR TEST, MANDREL TEST. AND CCTV INSPECTION SHALL BEPER SPECIFICATION SECTION 02730. 18. PRIOR TO PAVING THE STREET SECTION, ALL UNDERGROUND FACILITIES WITH LATERALS, INCLUDING BUT NOT LIMITED TO SEWER, WATER. TELEPHONE, ELECTRIC POWER. GAS. CABLE TELEVISION AND DRAINAGE FACILITIES SHALL BE IN PLACE AND TESTED. 19. CITY APPROVAL OF PLANS DOES NOT RELIEVE THE ENGJNEER-OF-WORK FROM RESPONSIBILITY FOR THE CORRECTION OF ERRORS AND OMISSIONS DISCOVERED DURING CONSTRUCTION. ALL PLANREVISIONS SHALL BE PROMPTLY SUBMITTED TO THE CITY ENGINEER FOR APPROVAL 20. A RIGHT-OF-WAY PERMIT FROM THE CITY ENGINEER WILL BE REQUIRED FOR ANY WORK IN THE PUBLIC RIGHT OF WAY. PRIOR TO PERMIT ISSUANCE. A CERTIFICATE OF INSURANCE MUST BE RUED NAMING THE CITY OF CARLS3AD AS AN ADDITIONAL INSURED ON THE PERMITTEE'S POLICY IN THE MINIMUM AMOUNT OF $1.000.000.00 FOR EACH OCCURRENCE OF LIABILITY. THE INSURANCE COMPANY WRITING THE POLICY MUST HAVE A RATING OF 'A-' OR BETTER AND A SIZE CATEGORY OF CLASS 'V OR BETTER AS ESTABLISHED BY 'BESTS' KEY RATING GUIDE 21. NO WORK SHALL BE COMMENCED UNTIL ALL PERMITS HAVE BEEN OBTAINED FROM THE CITY AND OTHER APPROPRIATE AGENCIES. GENERAL NOTES (CONT): 23. A PRECONSTRUCTION MEETING SHALL BE HELD AT THE SITE PRIOR TO THE BEGINNING OF WORK AND SHALL BE ATTENDED BY ALL REPRESENTATIVES RESPONSIBLE FOR CONSTRUCTION, INSPECTION. SUPERVISION. TESTING AND ALL OTHER ASPECTS OF THE WORK. THE CONTRACTOR SHALL SCHEDULE THE MEETING BY CALLING THE INSPECTION LINE AT (780) 436-3891 AT LEAST FIVE (5) WORKING DAYS PRIOR TO STARTING CONSTRUCTION. APPROVED DRAWINGS MUST BE AVAILABLE PRIOR TO SCHEDULING. 24. THE CONTRACTOR SHALL DESIGN, CONSTRUCT AND MAINTAIN ALL SAFETY DEVICES, INCLUDING SHORING, AND SHALL BE SOLELY RESPONSIBLE FOR CONFORMING TO ALL LOCAL. STATE AND FEDERAL SAFETY AND HEALTH STANDARDS. LAWS AND REGULATIONS. 25. IF ANY ARCHAEOLOGICAL RESOURCES ARE DISCOVERED WITHIN ANY WORK ZONE DURING CONSTRUCTION, OPERATIONS WILL CEASE IMMEDIATELY, AND THE PERMITTEE WILL NOTIFY THE CITY ENGINEER OPERATIONS WILL NOT RESTART UNTIL THE PERMITTEE HAS RECEIVED WRITTEN AUTHORITY FROM THE CITY ENGINEER TO DO SO. 26. ALL OFF-SITE HAUL ROUTES SHALL BE SUBMITTED BY THE CONTRACTOR TO THE CITY ENGINEER FOR APPROVAL TWO FULL WORKING DAYS PRIOR TO BEGINNING OF WORK, THE CONTRACTOR SHALL BE RESPONSIBLE FOR ANY DEBRIS OR DAMAGE OCCURRING ALONG THE HAUL ROUTE OR ADJACENT STREETS AS A RESULT OF THE GRADING OPERATION. 27- THE EXISTENCE AND LOCATION OF UTILITY STRUCTURES AND FACILITIES SHOWN ON THE CONSTRUCTION PLANS WERE OBTAINED BY A SEARCH OF THE AVAILABLE RECORDS. ATTENTION IS CALLED TO THE POSSIBLE EXISTENCE OF OTHER UTILITY FACILITIES OR STRUCTURES NOT SHOWN OR IN A LOCATION DIFFERENT FROM THAT SHOWN ON THE PLANS. THE CONTRACTOR IS REQUIRED TO TAKE DUE PRECAUTIONARY MEASURES TO PROTECT THE UTILITIES SHOWN ON THE PLANS AND ANY OTHER EXISTING FACILITIES OR STRUCTURES NOT SHOWN. 29- ANY TEMPORARY FLOW STOPPAGE OR DIVERSION SHALL BE PERFORMED DURING LOW FLOW PERIODS. ANY SUCH WORK SHALL BE CONDUCTED ONLY AFTER SUBMISSION OF A DETAILED WORK PLAN. THE DETAILED WORK PLAN SHALL BE SUBMITTED TO THE ENGINEER TOR REVIEW. COMMENT AND APPROVAL. ALL SUCH REQUESTS AND SCHEDULING SHALL OCCUR AT LEAST TWO WEEKS PRIOR TO THE SCHEDULED OUTAGE. * AS APPROPRIATE SIGNING AND STRIPING NOTES: t. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLING ALL SIGNING AND STRIPING. 2. SIGNING, STRIPING AND PAVEMENT MARKINGS SHALL CONFORM TO THE CALIFORNIA MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (FHWA'S MUTCD 2003 REVISION 1. AS AMENDED FOR USE IN CALIFORNIA). CALTRANS STANDARD SPECIFICATIONS (JULY 2006 OR LATEST VERSION THEREOF), THESE PLANS AND THE SPECIAL PROVISIONS. A. PRIOR TO FINAL ACCEPTANCE OF STREET IMPROVEMENTS, ALL STREET STRIPING AND MARKINGS WITHIN A 5001 PERIMETER OF THE CONSTRUCTION PROJECT WILL BE RESTORED TO A "LIKE NEW- CONDITION, IN A MANNER MEETING THE APPROVAL OF THE CITY INSPECTOR. 5. ALL PAVEMENT LEGENDS SHALL BE THE LATEST VERSION OF THE CALTRANS METRIC STENCILS. 6. FIRE HYDRANT PAVEMENT MARKERS SHALL CONFORM TO THE CALIFORNIA MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (FHWA'S MUTCD 2003 REVISION!, AS AMENDED FOR USE IN CALIFORNIA) AND SAN DIEGO REGIONAL STANDARD DRAWING M-19. 7. ALL MEDIAN NOSES AND FLARES SHALL BE PAINTED YELLOW. 8. ALL SIGNS SHALL BE STANDARD SIZE AS SHOWN IN THE CALIFORNIA MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (FHWA'S MUTCD 2003 REVISION 1, AS AMENDED FOR USE IN CALIFORNIA) UNLESSOTHERWISE SPECIFIED. SEWER NOTES: 1. THE CONTRACTOR SHALL OBTAIN AN EXCAVATION PERMIT FROM THE DIVISION OF INDUSTRIAL SAFETY BEFORE ANY EXCAVATION AND SHALL ADHERE TO ALL PROVISIONS OF THE STATE CONSTRUCTION SAFETY ORDERS. 2. BEFORE ANY CONNECTION TO THE CITY OF CARLSBAD'S EXISTING SYSTEM, A PERMIT SHALL BE OBTAINED FROM THE CITY. IT MUST BE SIGNED AND APPROVED BY THE CITY OF CARLSBAD'S ENGINEER AND ENCINA WATER AUTHORITY SUPERINTENDENT. BENCHMARK THE BENCH MARK USED FOR THIS SURVEY IS A iST BRASS DISK IN DRAINAGE INLET STAMPED -CITY OF CARLSBAD SURVEY CONTROL STATION CLSB-057LS 6215-LOCATED ATTHE SOUTHWEST QUADRANT OF AVEN1DA ENCINAS AND CANNON ROAD AS PUBLISHED M THE CITY OF CARLSBAD SURVEY CONTROL NETWORK BOOK AND RECORD OF SURVEY 17271. I.E. ELEV. = 44.01 (NGVD29) BASIS OF COORDINATES THE BASIS OF COORDINATES FOR THIS SURVEY IS THE CITY OF CARLSBAD SURVEY CONTROL STATION "CLSBXHTASPUBLISHED IN THE CITY OF CARLSBAD SURVEY CONTROL NETWORK BOOK AND RECORD OF SURVEY 17271. I.E. NORTHING 1,093,994.52 EASTING 8^30,740^6(CCS83, 1991.35 EPOCH. U.S. SURVEY FEET) PROPERTY UNES AND RJGHT-OF-WAY UNES SHOWNHEREON WERE ESTABLISHED FROM CTTY OF CARLSBAD GIS DATA. NO TITLE REPORTS WERE REVIEWED FOR THIS PROJECT. CENTERUNES OF STREETS SHOWN HEREON WERE ESTABLISHED FROM RECORD MAPS. SELECT RECORD MONUMENTS WERE TIED INTO THE PROJECT COORDINATESYSTEM TO ORIENTATE THOSE RECORD MAPS. BEARKG5 AND DISTANCES TAKEN FROM CENTERUNES IN THIS DRAWING REPRESENT A BEST FIT COMPLATION OF RECORD DATA. CENTERLINES, PROPERTY LINES. AND RJOHT-OF-WAY UNES ARE INTENDED TO BE USED FOR A GRAPHICREPRESENTATION ONLY. BROWN AND 9885 Chesapeake Sao Diego. POP 00-02 (CJ/SP 144(L)/RP1O26f CDP 10-17 /HDP 10-05/SUP1M2/ HMPNM3 CALDW ELL Drive, Suite 200 Co. 92133 [SHEET NAME | PL-02 •»=t|| CITY OF CARLSBAD II'""™2 | | ENGINEfcHING UfcP*HTMtNI | I yB GENERAL NOTES AQUA HED1DNDA SEWER LFT STATION. FORCE MAIN. AMD GRAVITY SEWER REPLACEMENT PROJECT INTERCEPTOR RELIEF SEWER IN AVENIDA ENCINAS PROJECT LOCATION MAP SCALE: 1* • 2Of PDP««2(C)/SP144{L)/RP 10-26/ CDP 10-17 / HDP 1045 / SUP 1042 / HMP1(W)3 BROff N Uto C ALDWE LL BBSS Chesapeake Drive. SuiU ZOOSan Diego. Ca. 92123 rciTY OF CARLSBADH PROJECT LOCATION MAP POP 00-02 (C) / SP 144 (L) / RP 10-2B / COP 10-171 HOP 10-05* SUP 10-02*HMP 10-03 BROff N AND CALDWELL 8865 Cheupmikii Drive, Suite 2DQSan Diego, CB. 03183 I CITY OF CARLSBAD I PROPOSED EASEMENTS t4i'-«'W5Lj(Pl^M :'• t T£, JA^*Sfc:r'•£ PDP(XM)2(C)/SP1«(L);RP1!>-26/ CDP1IMTJHDP HMSJSUP1M2; HMP 1(W)3 BROWN AND CALDWELL9665 Chesapeake Drive. Suite 200San Diego. Ca. 82133 I CITY OF CARLSBAD I|| EMGMEEBIHG P6PARIMEHI j| PROPOSED EASEMENTS EXISTING JUNCTION STRUCTURE LOCATION OF TEMPORARY NCTD RAILROAD-' OPEN TRENCH CONSTRUCTION (ALL UTILITIES) PROPOSED RELOCATION OFEXISTING 12- HP GAS UNE BEGIN PROPOSED RECYCLED WATER CONSTRUCTION CONNECT TO EXISTING 10* WATER EXISTING JUNCTION STRUCTURE LOCATION OF TEMPORARY BY-PASS PUMPING EQUIPMENT RELOCATE EXISTING 8' SEWER LATERAL 'U EXISTING A.T.4S.F. RAILROAD tVH PROPOSED 6'WATER SERVICE YMCA AQUATIC CENTER LAYDOWNAREAPROPOSED 12- RECYCLED WATER , BEGIN PROPOSEDSEWERCONSTRUCTION TEMPORARY 24'ABOVE GRADE BY-PASS PUMPING FORCE MAIN ABANDON EXJSflNG_:- -^rr, JIT WATER •JD.Q_RAV1TY8EWER PROPOSED GRADING (FLL) rEMPORARY CONSTRUCTION FENCING PROPOSED RECYCLED WATER (OPEN TRENCH CONSTRUCTION) PROPOSED ff WATER LINE REPLACEMENT OF EXISTING T WATER PROPOSED SEWER EXISTING SEWER TO REMAN EXISTING SEWER TO BE ABANDONED OR REMOVED EXISTING ABANDONED SEWER EXISTING 12- HP GAS RELOCATED 12-HP GAS EXISTING 12- HP GAS TO BE REMOVED TEMPORARY 24' BYPASS FORCE MAIN TEMPORARY 47 SEWER EXISTING OVERHEAD TELEPHONE EXISTING OVERHEAD ELECTRICAL EXISTING GAS EXISTING SEWER EXISTING WATER EXISTING STORM DRAIN TEMPORARY CONSTRUCTION FENCING PROPOSED RELOCATION OF EXISTING \V HP GAS LINEEXISTING A.T.SS.F. RAILROAD R/W POP 00-02 (C) / SP 144 (L) / RP10-26/ CDP 10-17 / HOP 1046 / SUP 1<KC( HMP 10-03 CITY OF CARLSBAD UWDOWNABIEA PROPOSED MANHOLE PROPOSED IMPROVEMENTSBROWN AND CALDWELL 0665 Chesapeake Drive. Suite 200San Diego, Ca. 92123 AQUA HEDIONDA SEWER LFT STATION. FORCE MAIN. AND GRAVITY SEWER REPLACEMENT PROJECT PHASE 3 (VC12 AND VC13) OPEN TRENCH CONSTRUCTION «LL UTILITIES HDD/THE NCHLESS CONSTRUCTION (PROPOSED 30- ID SEWER FORCE MAIN) OPEN TRENCH CONSTRUCTION (PROPOSED 12' RECYCLED WATER) PROPOSED 12" RECYCLEDWATER, (OPE/URENCttCDNSmuCTIONI FACIUTIE3 AFTER COWUfTION OF PROPOSED UFT STATION(SEE SHEET PUB) EXISTING 12" HP GAS UNE TO BE RELOCATED ONTO BRIDGEAND EXISTING PFE AND SUPPORTS TO BE REMOVED TEMPORARY CONSTRUCTIONFENCING POP 00-02 (C) / SP 144 (L); RP10-28 / CDP 10-17 /HOP 10-05/SUP 1042 /HWP 10-03 -EXISTING BRIDGE AND42*SEWERTO BE REMOVED AFTER COMPLETIONOF PROPOSED BRIDGE BROWN AND CALDffELL BBSS Chesapeake Drive, Suite 200 San Diego, Ca. 82183 | CITY OF CARLSBAD I PROPOSED IMPROVEMENTS PHASE 3 (VC12 AND VC13) PROPOSED MCC AND,' ENERATOR ROOM f TEMPORARY CONSTRUCTION FENCNG VISIBLE FACE OF PROPOSED STRUCTURE PROPOSED FOULAR ' OWERS TO BIO-FILTERSPROPOSED PERMANENT S HIGH, BLACK VINYL COATED CHAIN UNK FENCE(TYP AROUND PUMP STATION STTE) TINOAT.&SJ^. RAILROAD RAV PROPOSED RETAWWG WALL(3'TOe-HH3H) PROPOSED r WATER LJNE EXISTING PROPERTY UNE HDD EQUIPMENT LAYOOWN AREAAND PIPELINE ENTRY PIT RETAINING WALLS AND ABUTMENTS PROPOSED XT SEWER FORCE MAIN PROPOSED 12- RECYCLED WATER _/- -(OPENTRENCH CONSTRUCTION) PROPOSED WE GRAVITY SEWER EXISTING 42-GRAVITYSEWER TO REMAIN EXISTING LIFT STATION FACILITIES AFTER COMPLETION OF PROPOSED LIFT STATION(SEE SHEET PLOfll - TEMPORARY CONSTRUCTION FENCE TEMPORARY HIGH-LINE BYPASS PUMPING FORCE MAIN EXISTING AT. ASf. RAILROAD R/WEXISTING 12'HP GAS LINE TO E RELOCATED INTO BRIDGE AND EXISTING PIPE AND SUPPORTS TO BE REMOVED EXISTING BRIDGE AND 42* SEWER TO BE REMOVED AFTER COMPLETION OF PROPOSED TEMPORARY 6- PVC WATER PROPOSED GRINDER FACILITY ABANDON EXISTING42-SEWER PROPOSED RELOCATIONOF I? HP GAS UNE TEMPORARY 42" DIVERSION PIPE TO EXISTING UFT STATIONPROPOSED BRIDGE SEE SHEET PL-17 TEMPORARY CONSTRUCTION FENCING PROPOSED JUNCTIONSTRUCTURE No. 5 PROPOSED ir RECYCLED WATER(OPEN TRENCH CONSTRUCTION)FOR PIPELINE SEE BRIDGE ELEVATION SHEET PL-18 PROPOSED RECYCLED WATER (OPEN TRENCH CONSTRUCTION) PROMISED 6* WATER LINE REPLACEMENT OF EXISTING 3" WATER PROPOSED SEWER EXISTING SEWER TO REMAN EXISTING SEWER TO BE ABANDONED OR REMOVED EXISTING ABANDONED SEWER EXISTING i RELOCATED 12" HP GAS EXISTING 12- HP GAS TO BE TEMPORARY 24' BYPASS FORCE MAIN TEMPORARY 42* SEWER EXISTING OVERHEAD TELEPHONE EXISTING OVERHEAD ELECTRICAL EXISTING GAS EXISTING SEWER EXISTING WATER EXISTING STORM DRAIN TEMPORARY CONSTRUCTION FENCING POP00-02 (C)/SP 14* (D/RP10-26/ CDP10-17 / HDP 10-06 / SUP 1042/ HMP 10-03 LAYDOWNAREA PROPOSED MANHOLE BROWN AND CALDffELL 9665 Chesapeake Drive. Suite 200Son Diego. Co. 92123 CITY OF CARLSBAD I PROPOSED IMPROVEMENTS EXISTING LIFT STATION BOTTOM SLAB DEMOLITION PLAN SCALE: W - 1XT EXISTING GENERATOR BUILDING EAST ELEVATION SCALE: 1M'= 1MT EXISTING GENERATOR BUILDING DEMOLITION PLAN SCALE: 1/4-= r-0" EXISTING LIFT STATION SECTION A-A •p rassar t\ \ i- r CL* T.P (TO BE REMOVED AND BACKFILLED) OVERFLOW BASIN SECTION CONSTRUCTION jOtMT/iTN EXISTING LIFT STATION SECTION B-B SCALE: 1W = I'-fl- POP 00-02 (C)/SP 144[L)f RP10-26I COP 10-17/ HDP 10-05 I SUP 10-OZ/HMP 10-03 _ BROWN AND CALDWELL OBBE ChnnpaKke Drive. Sulla ZOOSou Diego. Co. 921E3 «**]I CITY OF CARLSBAD] PROPOSED DEMOLITION AGUA HEDIONDA SEWER LIFT STATION. FORCE MAIN AND GRAVITY SEWER REPLACEMENT PROJECT PIPE I SWALE FLOW SURFACE FLOW 30" STORM DRAINPIPECATCH BASINWITH FILTRATION MEDIA INSERT REPLACE EXISTING 3CT STORM DRAIN PIPE 18* STORM DRAIN RPE STORM DRAIN HEADWALL/RPRAP OUTFALL TO INFILTRATION BASIN EXISTING INFLITRATION BASIN 18" STORM DRAIN PIPE CURB AND GUTTER CURB INLET _ EXISTING A.T.SSF. RAILROAD FVW LEGEND: X jl j EARTHEN COVER GRAVEL COVER ^~\ PCC PAVEMENT ' ~~ K. j (PORTLAND CEMENT CONCRETE) INFILTRATION BASM CTC-11) STORM DRAW CLEANOUT BASIN OVERFLOW WIHT '—NOTCHED CURB EXISTING INFILTRATION BASIN GRADING QUANTITY TABLE CUT 77,471 CU YD (CUT) FILL 39,066 CU YD (FILL) GRAVEL IMPORT 7.787 CU YD (IMPORT) IMPORT SOIL 7,069 CU YD (WPORTJ EXPORT SOIL 38,678 CU YD (EXPORT) PDP 00-02 [C}/SP 144(L)/RP10-2fl/ CDP10-17/HDP1CH»/SUP1(M)2/HMP 10-03 BROWN AND CALDWELL 8665 Chesapeake Drive, Suite 200Son Diego. Co, 92123 1 CITY OF CARLSBAD \ STORM WATER MANAGEMENT HDOfTRENCHLESS CONSTRUCTION (PROPOSED 30" ID SEWER FORCE MAIN) OPEN TRENCH CONSTRUCTION (PROPOSED 12" RECYCLED WATER) PHASE 3 (VC12 AND VC13) HDP/TRENCHL.ESS CONSTRUCTION (PROPOSED 30" ID SEWER FORCE MAIN) OPENTRENCH CONSTRUCTION (PROPOSED 12" RECYCLED WATER) ~ *j - '-V "•'•' '• ••'••-,•• ' POP 00-02 (C) / SP 144 (L) / RP10-2B/CDP10-17 / HDP 1(M» / SUP 1 CMC/HMP 10-03 BROWN AND CALDVELL 8665 Chesapeake Drive, Suite 200 Stffi Diego. Co. 92123 '"^ll CITY OF CARLSBAD11 || ^NGM^RING QEfAHTMENI SHEETS 29 PROPOSED IMPROVEMENTS AGUA HEDIONDA SEWER LFT 3TATBH. FORCE MAIN.AND GRAVITY SEWER REPLACEMENT PROJECT PHASE 1 (VC14 ANDVC15) HDDfTRENCHLESS CONSTRUCTION (PROPOSED 30" ID SEWER FORCE MAINI OPEN TRENCH CONSTRUCTION (PROPOSED 12" RECYCLED WATER (OPEN TRENCH CONSTRUCTION)POP 00-02 (CJ / HP 144 (L) / KP 10-2B/CDP 10-17/HDP 10-06/SUP 10-02; HMPHHB BROWN AND CALDWELL Drive, Suit* 200 Co. 93123 l CITY OF CARLSBAD IL ENCMelJJLNC 0&PWI1MENT '•. PROPOSED IMPROVEMENTS AGUA HEDiONDA 3EWER LIFT STATION, FORCE MAIN. AND GRAVITY SEWER REPLACEMENT PROJECT -OPEN TRENCH CONSTRUCTION (PROPOSED 5<- ID GRAVITY SEWER AND 12- RECYCLED WATER) PHASE 1 (VC14ANDVC1S) MICROTUNNEL TRENCHLESS CONSTRUCTION (PROPOSED W ID GRAVITY 56WER1 OPEN TRENCH CONSTRUCTION (PROPOSED 1V RECYCLED WATER BROWN AND CALDWELL I CITY OF CARLSBAD 6*GIHeeHJKIG JEPARtMENT PROPOSED IMPROVEMENTS PHASE 1(VC14 AND VC15)OPEN TRENCH CONSTRUCTION MICROTUNNEL TRENCHLESS CONSTRUCTION (PROPOSED 54" ID GRAVITY SEWER} OPEN TRENCH CONSTRUCTION ( PROPOSED 12" RECYCLED WATER) PHASE 1 IVC14ANDVC15) OPEN TRENCH CONSTRUCTION TPROPOSED 54" ID GRAVITY SEWER AND 12- RECYCLED WATER) BROWN AND CALDWELL 98B5 ChtMpeike Drive. Suite 200Son Diego, CB. B21E3 I CITY OF CARLSBAD If551^ PROPOSED IMPROVEMENTS AVENIOA ENCINAS EASEMENT EX 3' HP GAS ..EU.UNK.. EX-lfl" AGP WATER TOP EL= 42.0*- SECTION fcj SCALE :1--1ir RQ AND GUTTER SECTION SCALE: r-10- ^—EXT2"HPGAS \_EX TELEPHONE .EL.UNK ...... EX «• RCP SEWER T»- PROP 54" ID a SECTION (^ •WLE-I-.H^ BE OWNQ865 Chcs GDP 10-17 1 HDP 1W»/ SUP 1<H)2/ _ vTNHWP 1DJ13 1 ^L-13 | WU I' - ID' AND CALDWELL apeohe DrlTe, Suite 200Diego. Co. 92123 SHSETII CITY OF CARLSBAD ||SrtEEI8 15 J| ENCASHING UtPAHrMENI jj 25 CROSS SECTIONS AQUA HEDIONDA SEWER LFT STATION. FORCE MAjN AND GRAVITY SEWER REPLACEMENT PROJECT SOUND ENCLOSURE •VEHICLE QUARDRNL - BEYOND PUNTED SLOPE-J WEST ELEVATION C.I.P. CONG, RETAINING WALL W INTEGRAL CON& COLOR PLANTED SLOPED OfWDERFMCLnY- AQUA HBHONDA SEWER LTT STATION, FORCE MAM. AMD GRAVfTY SEWER RB^ACEUBa PROJECT SOUND ENCLOSURE (TTP) SOUND BJCLOSURE CTYP) • - QRINDER FACILITY "V TOP OF STRUCTURE 1 1 1 1 J r-GEUIW GRADE / STRUCTURE _/ SOUTHWEST ELEVATION /:BaOW GRADE STRUCTURE •EXttTINQ YMCA AQUATIC CENTER STRUCTURES NORTH ABUTMENT/RETAINING WALL (EARTH TONE COLOR WITH WAVE FORM UNEH TEXTURING AND ANTI-GRAFFITI CCMTIf4O; SOUTH ABUTUENTJRETAMNG WALL (EARTH TONE COLOR WTTH WAVE FORM U AND ANTH3RAFFITI COATING) HKJH PRESSURE GAB UNE EAST BRIDGE ELEVATION SCALE; i/r-r-cT BROWN AHD CALDWELLDrira. SutU 800 MATCHLINESEE BELOWFOR CONTINUATION AVENIDA ENCINAS 54" SEWER STAGING PLAN SCALE: r = 80- - MATCH1SEE ABOVEFOR CONTINUATION 54" SEWER STAGING PLAN SCALE: 1' = 80- MATCHLINESEE SHEET PL-19FOR CONTINUATION LIMITS OF WORK AREA NOTES: 1. LIMITS OF OPEN EXCAVATION CONSTRUCTION STAGE SHALL NOT EXCEED 400FEET IN LENGTH. FOLLOWING PIPE INSTALLATION AND BACKFILL OF EACH CONSTRUCTION STAGETHE CONTRACTOR SHALL CAP IMPACTED ROADWAY SURFACE WITH HOT-MIXASPHALT. CONTRACTOR SHALL PLACE TEMPORARY DOUBLE YELLOW STRIPINGALONG BOUNDARY OF REMOVED HARDSCAPE MEDIAN UNTIL RAISED MEDIAN ISREPLACED IN KIND. 7. WHILE CONSTRUCTION ACTIVITIES ARE OCCURRING WITHIN A SINGLE STAGE,THE CONTRACTOR SHALL NOT OCCUPY MORE THAN 100 FEET OF EITHER THELEAD OR LAO STAGE FOR CONSTRUCTION ZONE ACCESS. 8. AT CONSTRUCTION STAGES WHERE TRAFFIC IS TEMPORARILY REDUCED TO ASINGLE TRAVEL LANE THE CONTRACTOR SHALL PERFORM NIGHT CONSTRUCTIONOR PROVIDE FLAGGER CONTROL UNTIL SEGMENT IS COMPLETED STAGES ARE NOT REPRESENTATIVE OF CONSTRUCTION ORDER. 12" RECYCLED WATER STAGING PLAN POP (KMJ2 (C) / SP 144 (L) / RP 10-20 / CDP10-17 / HDP 10-05 / SUP 1042 / HMPIENB BROWN AND CALDWE LL0885 Chesapeake Drive, Suite ZOOSon Diego. Ca. 92183 CITY OF CARLSBAD I TRAFFIC STAGING PLAN MATCHUNE SEE BELOW FORCONTINUATION -MATCHUNESEE SHEET PL-1B FOR CONTINUATION 54' SEWER STAGING PLAN SCALE: r =• str SEE NOTE B -MATCHUNESEE ABOVEFOR CONTINUATION 54-SEWER STAGING PLAN SCALE: r = 8ff LEGEND: LIMITS OF WORK AREA FOLLOWING PIPE INSTALLATION AND BACKFILL OF EACH CONSTRUCTION STAGETHE CONTRACTOR SHALL CAP IMPACTED ROADWAY SURFACE WITH HOT-MIX ASPHALT. CONTRACTOR SHALL PLACE TEMPORARY DOUBLE YELLOW STRIPING ALONG BOUNDARY OF REMOVED HARDSCAPE MEDIAN UNTIL RAISED MEDIAN £REPLACED IN KIND. T. WHILE CONSTRUCTION ACTIVITIES ARE OCCURRING WITHIN A SINGLE STAGE, THE CONTRACTOR SHALL NOT OCCUPY MORE THAN 100 FEET OF EITHER THE LEAD OR LAG STAGE FOR CONSTRUCTION ZONE ACCESS. 8. AT CONSTRUCTION STAGES WHERE TRAFFIC IS TEMPORARILY REDUCED TO A SINGLE TRAVEL LANE THE CONTRACTOR SHALL PERFORM NIGHT CONSTRUCTION OR PROVIDE FLAGGER CONTROL UNTIL SEGMENT IS COMPLETED. 11. STAGES ARE NOT REPRESENTATIVE OF CONSTRUCTION ORDER, 12" RECYCLED WATER STAGING PLAN SCALE: I' = W PDP 0042 (C) ISP 144 (L) / RP 10*261CDP 10-17 / HDP 1CW)5 / SUP 10-02 / HMP1MX3 BROWN AND CALDWELL B665 Chesapeake Drive, Suite ZOOSan Diego. Co. 92183 I CITY OF CARLSBAD 1ODEPARTMENT [ TRAFFIC STAGING PLAN LEGEND TREES (15 gal. and 24' box) aucfl OK ^B ARDLITUS UNEDO STRAWBERRY TREE •^Bfe, IOLEJCA QUMQUEICRVIA CAJEPUT TREE SHRUBS (5 gal. and 15 gal.) «u* as: £j COTDNEASTER LACTEUS PARNEV COTONEASTER Q CARISSAMACROCARPA NATAL PLUU GROUND COVER (sudi as): [gr^J^J ACACIA REDOLENS DESERT CARPET PROSTRATE ACACIA UYOPORUM PARWOUUM PROSTRATE MYOPORUM UMOMUM PEREZI1 g^ LAVENDER [•A*, I AGAPANTHU8AFRICANUS LILYOFTHENLE OSTEC^PWMUMFRUITICOSUM TRAILING AFRICAN OAttY BASIN GROUND COVER (MM* n): [ _] LEYMUS TRmCOtOea CREEPINO WIQ RYE PAVING MATERIALS PORTLAND CEMEHT CONCRETE [ I A SEED MIX SPECIFICATION ATRPIEX LENT1FORM3 ACMLLEA MILEFOUUMERIOPHYLLUU CONFERTFLORUM HElWTROPIUMa LOTUS SCOPARWB NASSELLAPULCHRA KASSEUALEPIDAHEUCA IMPERFECT* DISTICMJS SP1CATA BREWERS SALTBRUSHMONKEY FLOWER GOLDEN YARROWIHEUOTROPE ESCHSCHOLZIA CAUFOHNICASTLLEJA EXSERTA LUPIN US BICOLOR LUPIN JS 3UCCULENTUS PLANTAOO ERECT A PURPLE NEEDLEGRASS FOOTHILL NEEDLEGRAS8COA3IRANOE MELIC SALTORA33 DEERWEEDCALIFORNIA POPPY PURPLE OWLS aOYEHMINIATURE LUPINE ARROYO LUPINE SEED INSTALLATION NOTE ES UNPROTECTED VEGETATION REMOVED AS A RESULT OF CONSTRUCTION) SHALL BE REVEGETATED WTTH THE SEED MX ABOVE. HVDROSEEDED PER CONTRACT SPECIFICATION SECTION 02030. AREAS TO BE HVDROSEEDED WILL BE DELINEATED BY PROJECTBIOLOGIST AM? WC1U06 MJCROTUNNELHO. -mcNCM OIGGINO. STAGING AREAS.MAINTENANCE ROADS AM) UNANTICIPATED IMPACTED AREAS. PLAN NOTES |T| TREES LOCATED TO SCREEN VIEWS INTO PROJECT. (Tj SCREENING SHRUBS MAJNTAINEQTOBFEETAOAJNSTWALL Q] ORASS-PLANTED VEGETATED SWALE [T] VESETATEO KFM.TRAT1ON BASIN [T| RAISED PLANTER-»'TO 3(T TALL [T] EDGE OF IRRIGATED LANDSCAPE [Tj 8 FOOT HIGH. BLACK VINYL COATED CHAJNLWK FEMCE PER DET> Q>WEST ELEVATION SOUTH ELEVATION SCALE: 1' = 20" ENCASEMENT ALL ENCASEMENTS SHALL HAVE ABOVE GROUND LEVEL f OR GATE POST HOES CHAIN LINK FENCE DETAIL NOT TO SCALE PDF 00-02 (C)/ SP 1*4 (L) / RP 10-26 / CDP 10-17 / HDP HM5 / SUP 11M2 / HMP1CMK3 BROWN AND CALDWELL9S6S Cbeanpoake Drive, Suite 200Son Diego, Ca. 92123 i CITY OF CARLSBAD| EMOINEERINO D6PAHTUENT II " J LANDSCAPE CONCEPT PLAN rsr. o o o o ee'-a MT FORCE MAIN PUMPSrwi O O O O BUILDING AREA SQUARE FOOTAGE No. liool r?on [ToTI Izool f20U] 1 202 Inon 12041non 1 206 1 LS ROOM LIFT PUMPS WET WELL FORCE MAIN PUMPS GENERATOR ELECTRICAL ENTRY TOILET OFFICE LIFT PUMPS WETrtELL FORCE MAIN PUMPS GRINDER AREA 1.945 SOFT 550 SO FT 2,878 SQFT 719 SOFT 895.5 SQ FT 103 SOFT 86.5 SOFT 123 SOFT 2,060 SOFT 827.5 SOFT 2,337 SQ FT 675 SOFT LIFT STATION FIRST FLOOR - 5.373 SQ. FT. SCALE: Xj'^'-O" LIFT STATION SECOND FLOOR - 7.273 SQ. FT. SCALE: V=1'-0" (-EXTERIOR STAIRWELL fS / NOT INCLUDED IN AREA GRINDER FACILITY - 875 SQ. FT. SCALE: Jf=1'-0* KEY MAP NO SCALE POP OM2 (CJ / SP144 (L)> RP 1056 /GDP 10-17 / HDP 10-05 / SUP 1M2 / HMP1(KO BROff N AND C ALDWELL 9665 Chesapeake Drive, Suits 200San Diego, Ca. 9ZIZ3 I CITY OF CARLSBAD I BUILDING LAYOUTS LOOKING FROM 1-5 NOTTOSCALE LOOKING FROM CARLSBAD BOULEVARD NOTTOSCALE ' " LOOKING FROM GARFIELD STREET NQTTOSCALE POP OCHG (C) / SP144 (L) / RP 11W6 / CDP10-17yHDP1O05/SUPUXI2/ HMP 10-03 BROWN AND CALDWELL Drivo. Suite 200Ca. 92133i Chosaponke 1San Diego. ( CITY OF CARLSBAD] VISUAL SIMULATIONS LOOKING SOUTH NOT TO SCALE LOOKING NORTH NOTTOSCALE LOOKING WEST NOTTOSCALE LOOKING SOUTHEAST NOTTOSCALE BROWN AND CALDWELL 9665 Chesapeake Drive. Suite 800San Diego. Ca. 02123 I CITY OF CARLSBAD I ARCHITECTURAL RENDERINGS BASIN SLOPES TABLE NUMBER 1 2 3 < MINIMUM SLOPE 0.00% 15.00% 25-00% 40.00% MAXIMUM SLOPE 15,00% 25.00% 40.00% > 40.00% COLOR H Limm 20 AREA (SOFT) 26,288 2,986 2.265 18.292 3D AREA (SQ FT) 28,32926 2.939.67 2,379.46 21.571.80 RAILROAD R/W 0+60 1*00 Station 0+50 1*00 Station s|i POP00-02 (C)/SP 144 (L)/RP1Q-2fl/ CDP 10-17 / HDP 10-05 / SUP 10-02 / HMP1M3 BROff N AND CALDWE LL I SHEET NAME I I PL-24 | I CITY OF CARLSBAD I I ENGINEERWGDEPARTMEtff II CROSS SECTIONS LIFT STATION SITE SLOPES TABLE NUMBER 1 2 3 4 MINIMUM SLOPE 0.00% 15.00% 25.00% 40.00% MAXIMUM SLOPE 15-00% 25.00% 40.00% > 40.00% COLOR • • 2D AREA (SQ FT) 91,666 11,354 7,735 13,079 3D AREA (SO FT) 91,979.98 11,580.93 8.156,83 15,097.80 — «r ^jr 6^X>- - p^ — -O •&* ^^AT. A S,F.—1 !' —t&^s \ • \ in 1 ^•--,10 ^ 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 0+60 1+00 1+50 2+00 2+50 3+00 3+50 I AGUA HEOIONDA I LAGOON O | EX PROPERTY LINE -i s'^'l' li \^ CONCRETEBERM 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 Station .+00 4+50 5+00 5+50 6+00 6+50 POP 00-02 fCj / SP144 (L) / RP 10-26 / CDP10-17/HDP10-05/SUFMfH)2/ HMP10-03 BROWN AND CALDWE LL 9665 ChBBBpeake Drive, Suite 200Son Diego, Ca. 92183 I CITY OF CARLSBAD III. ENGIMEEBING DEPABTMEMT [ | CROSS SECTIONS AGUA HEDIONDA SEWER UFT STATION, FORCE MAIN. AND GRAVITY SEWER REPLACEMENT PROJECT