HomeMy WebLinkAbout1989-04-18; City Council; 9981; Amendment to Precise Development Plan Encina Water Pollution Control Facility Expansion Phase IVCl=’ OF CARLSBAD - AGENP? BILL 113 CD
AB#= TITLE: AMENDMENT TO A PRECISE DEVELOPMENT DEPT. HD.
MT& 4/18/89 PLAN FOR THE PHASE IV EXPANSION OF
THE ENCINA WATER POLLUTION CONTROL CITY All s
DEPT. PLN FACILITY - PDP l(C) CITY MO&&
I RECOMMENDED ACTION:
Both the Planning Staff and Planning Commission recommend that this
application be approved and that the City Attorney be directed to prepare
documents approving PDP l(C).
I
ITEM EXPLANATION
This amendment would permit the Phase IV expansion of the Encina Water
Pollution Control Facility from its current 22.5 million gallon per day
(MGD) capacity to a capacity of 36 MGD liquid and 38 MGD solid. In
addition, the expansion would involve increasing ocean outfall capacity
to 65 MGD and a peak influent flow capacity of 81 MGD. The basic site
configuration will not significantly change as a result of this amendment
although additional buildings, piping and equipment will be installed.
The Planning Commission found that the expansion is consistent with the
General Plan, Local Coastal Program, the P-U zone, and the Growth
Management Program.
Through staff review, project conditioning, and the Planning Commission
hearing, all issues on this matter have been satisfactorily resolved. Of
particular note are two conditions. One condition refers to installation
of covers and removal of odors from the aeration basins - the site's
primary odor producer. The other condition requires submittal of detailed
landscape plans for review by the Planning Director to assure proper visual
screening of the site.
This project also requires approval of a Coastal Development Permit by the
California Coastal Commission prior to construction.
ENVIRONMENTAL REVIEW
The Planning Director has determined that this project has already been
considered in conjunction with a previously certified Environmental
Compliance dated November 12, 1988, which was approved by Planning
Commission on March 15, 1989.
I FISCAL IMPACT
The cost to the City for providing these services is $12,631,000 and will
be offset by the payment of facility fees and by requiring developers to
provide the public improvements needed to serve their projects.
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EXHIBITS
1) Location Map.
2) Planning Commission Resolution No. 2830.
3) Staff Report, dated March 15, 1989 with attachments.
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ATTACHMENT3
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ENCINA PHASE IV EXPANSION PDP-1 (C)
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PLANNING COMMISSION RESOLUTION NO. 2830
A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF CARLSBAD, CALIFORNIA, RECOMMENDING APPROVAL OF AN AMENDMENT TO THE EXISTING PRECISE DEVELOPMENT PLAN FOR THE PHASE IV EXPANSIONOF THE ENCINAWATER POLLUTION CONTROL FACILITY LOCATED AT 6200 AVENIDA ENCINAS. APPLICANT: ENCINA ADMINISTRATIVE AGENCY. CASE NO.: PDP l(C)
WHEREAS, a verified application for certain property, to
A portion of Fractional Section 20, Township 12 South, Range 4 West, San Bernardino Meridian according to the U.S. Government survey approved October 25, 1875 and a portion of Lot '@HI' of Agua Hedionda according to Map 823, filed November 16, 1896.
has been filed with the City of Carlsbad, and referred to the
Planning Commission: and
WHEREAS, said application constitutes a request as
provided by Title 21 of the Carlsbad Municipal Code; and
WHEREAS, the Planning Commission did on the 15th day of
March, 1989, hold a duly noticed public hearing as prescribed by
law to consider said request; and
WHEREAS, at said public hearing, upon hearing and
considering all testimony and arguments, if any, of all persons
desiring to be heard, said Commission considered all factors
relating to the Precise Development Plan: and
NOW, THEREFORE, BE IT HEREBY RESOLVED by the Planning
Commission as follows:
A) That the foregoing recitations are true and correct.
B) That based on the evidence presented at the public hearing, the Commission recommends APPROVAL of PDP l(C), based on the following findings and subject to the following conditions:
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Findinas:
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The Precise Development Plan ensures the compatibility of the project with the City's General Plan because:
The site is designated for public utility uses and the project is consistent with the goal and policy of the Public Facilities Element of the General Plan to ensure public facilities are available concurrent with need.
The Land Use Plan of Carlsbadls Local Coastal Program specifically calls for the expansion of the Encina Water Pollution Control Facility.
The Precise Development Plan Amendment is in conformance with the P-U, Public Utilities 2one and ensures compatibility with surrounding development for the following reasons:
a) Conditions are imposed as part of this approval that mitigate all significant impacts resulting from the project; particularly visual and odor impacts.
b) The development is located in a depressed area that can be more easily buffered in order to prevent adverse impacts to adjacent properties.
The proposed project conforms to the California Environmental Quality Act, and the Carlsbad Environmental Protection Ordinance since:
a) An EIR has been prepared and certified for the project.
b) A program to monitor and mitigate potential significant impacts is included as part of this approval.
cl The City, acting as responsible agency, has considered this EIR in approving the project.
d) Other environmental agencies have conditionally approved or will have to approve the project.
The Precise Development Plan Amendment provides for necessary public improvements as identified by Carlsbadls Growth Management Program.
Conditions:
Plannins DeDartment
1. Development of the site shall occur as shown on Exhibits IrAfm- "NM, dated October 28, 1988, and Exhibit msO@w dated February
10, 1989.
PC RESO NO. 2830 -2-
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All previous conditions of PDP l(A), City Council Resolution 6926 and Planning Commission Resolution No. 2113 are no
2 longer applicable and shall be superseded by the conditions of approval contained herein.
3 3. In addition to the approval of the development indicated in the exhibits noted in Condition No. 4 1, all other requirements listed in this approval shall be indicated on the final
5 Precise Development Plan. All subsequent communication concerning this project shall, when applicable, reference this Resolution Number and conditions contained herein. 6.
7 '* PRIOR TO ISSUANCE OF BUILDING PERMITS:
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a) Final landscape and irrigation construction drawings shall be submitted to the Planning Director for the entire facility and be subject to the approval of the Planning Director. The landscaping shall be designed to significantly screen facilities from views from I-5, and surrounding properties to the north, east and south. The drawings shall include fast growing tall and wide trees, as well as a combination of shrubs and ground cover. Plants shall be irrigated with reclaimed water to the maximum extent possible. Screening landscaping shall be installed upon completion of grading. Landscape and irrigation adjacent to building shall be installed immediately upon completion of any building construction.
b) A final lighting plan shall be subject to the approval of the Planning Director. All lighting shall be designed in a manner that will not adversely affect nearby residences or public roadways.
cl The applicant shall provide evidence that the retaining wall at the southeast corner of the site shall use a colored concrete mix which when dry shall be a color which blends into the surrounding background. This color mixture shall be reviewed and approved by the Planning Director. The intent of the colored condrete retaining wall is to allow the wall to better blend into the surrounding landscaping.
d) The applicant shall submit a reproducible copy of Precise Development Plan l(C) which incorporates all requirements of the approval to the City Manager for signature. Prior to signing the final Precise Development Plan, the City Manager shall determine that all applicable requirements have been incorporated into the plan and that all conditions of approval have been satisfactorily met or otherwise guaranteed. The final signed Precise Development Plan shall be the official site layout plan
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e) The applicant shall submit to the Planning Director for approval of an environmental mitigation monitoring and reporting program according to Section 21.081.6 of the Public Resources Code. This program shall be a part of this Precise Development Plan Amendment. The program shall include monitoring and reporting to the Planning Director the progress of all mitigation identified in the Final Environmental Impact Report for the project dated August 1988.
7 5. PRIOR TO FINAL INSPECTION OF THE SITE:
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27 PC RESO NO. 2830
for the property and shall be attached to.any application for a permit on the subject property.
a) The placement of equipment on .any roof tops shall be screened from views along I-5 and from adjacent properties consistent with Building Policy 80-6 and subject to the approval of the Planning Director.
b) All landscaping as indicated in this approval shall be in place and in a condition to assure healthy growth as determined by the Planning Director.
cl The site's aeration basins shall be covered and odors from the basins controlled based on the best available technology.
Enaineerins Denartment
6. The developer shall obtain a grading permit prior to the commencement of any clearing or grading of the site.
7. The grading for this project is defined as @@controlled grading" by Section 11.06.170(a) of the Carlsbad Municipal Code. Grading shall be performed under the observation of a civil engineer whose responsibility it shall be to coordinate site inspection and testing to ensure compliance of the work with the approved grading plan, submit required reports to the City Engineer and verify compliance with Chapter 11.06 of the Carlsbad Municipal Code.
8. No grading shall occur outside the limits of the project unless a letter of permission is obtained from the owners of the affected properties.
9. A separate grading plan shall be submitted and approved and a separate grading permit issued for the borrow or disposal site if located within the city limits.
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Prior to hauling dirt or construction materials to any proposed construction site within this project the developer shall submit to and receive approval from the City Engineer for the proposed haul route. The contractor shall comply with all conditions and requirements the City Engineer may impose with regards to the hauling operation.
Additional drainage easements and drainage structures shall be provided or installed as may be required by the City Engineer.
Unless a standard variance has been issued, no variance from City Standards is authorized by virtue of approval of this Site Plan.
The applicant shall comply with all the rules,'regulations and design requirements of the respective sewer and water agencies regarding services to the project.
The applicant shall be responsible for coordination with S.D.G.&E., Pacific Telephone, and Cable TV authorities.
The applicant shall agree to utilize reclaimed water on the subject property in all common areas as approved by the City Engineer.
Irrigation systems to accommodate future reclaimed water shall be designed consistent with Title 17 of the California Administrative Code. Offsite future reclaimed water distribution systems should be anticipated by the installation of adequately sized sleeves at crossing points to minimize street excavation.
Prior to issuance of a building permit, the applicant shall enter into an agreement with the City of Carlsbad whereby the applicant agrees to acquire adjacent right-of-way from the railroad for the purpose of constructing the full width improvement of Avenida Encinas including any necessary drainage, slope and construction easements. The applicant shall further agree to construct Avenida Encinas adjacent to the project to full width secondary arterial standards within the time frame as may be specified by the City Engineer.
F.ire Department
19. Prior to the issuance of building permits, complete building plans shall be submitted to and approved by the Fire Department.
20. Additional public and/or onsite fire hydrants shall be provided if deemed necessary by the Fire Marshal.
PC RESO NO. 2830 -5-
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The applicant shall submit two (2) copies of a site plan showing locations of existing and proposed fire hydrants and onsite roads and drives to the Fire Marshal for approval.
All required fire hydrants, water mains and appurtenances shall be operational prior to combustible building materials being located on the project site.
All fire alarm systems, fire hydrants, extinguishing systems, automatic sprinklers, and other systems pertinent to the project shall be submitted to the Fire Department for approval prior to construction.
All roof-top appurtenances shall be architecturally integrated into the design of the building and shielding to prevent noise and visual impacts, subject to approval before issuance of permit.
Building exceeding 10,000 sq. ft. aggregate floor area shall be sprinklered or have four-hour fire walls with no openings therein which shall split the building into 10,000 sq. ft. (or less) areas.
Utilities and Maintenance DeDartment
26. A backflow device for domestic water service shall be provided for the project.
Water - Costa Real Water District
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The entire water system for subject project shall be evaluated in detail by the Costa Real Municipal Water District to ensure that adequate capacity for domestic, landscaping and fire flow demands are met.
The applicant's engineer shall schedule a meeting with the Costa Real Municipal Water District Engineer and the City Fire Marshal and review the preliminary water system layout prior to preparation of the water system improvement plans.
The applicant will be responsible for all Costa Real Municipal Water District fees and deposits plus the major facility charge which will be collected at time of issuance of building permit.
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PASSED, APPROVED AND ADOPTED at a regular meeting of the
Planning Commission of the City of Carlsbad, California, held on
the 15th day of March, 1989, by the following vote, to wit:
AYES: Chairman Hall, Commissioners: Schranun, Schlehuber, Holmes, Erwin, McFadden & Marcus.
NOES: None.
ABSENT: None.
ABSTAIN: None.
MATTHEW HALL, Chairman CARLSBAD PLANNING COMMISSION
ATTEST:
Planning Director
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APPLICATION COMPLETE DATE:
NOVEMBER 18. 1988 0 3
STAFF REPORT
DATE: MARCH 15, 1989
TO: PLANNING COMMISSION
FROM: PLANNING DEPARTMENT
SUBJECT: PDP l(C) ENCINA PHASE IV EXPANSION - Request for a Precise
Development Plan Amendment for the Phase IV expansion of the Encina
Water Pollution Control Facility, located at 6200 Avenida Encinas
in the P-U Zone. The project is within Local Facilities Management
Zone 3.
I. RECOMMENDATION
It is recommended that the Planning Commission ADOPT Resolution No. 2830
recommending APPROVAL of PDP l(C), to the City Council based on the findings and
subject to the conditions contained therein.
II. BACKGROUND AND ANALYSIS
The applicant is requesting an amendment to a Precise Development Plan PDP l(B)
to allow the Phase IV expansion of the Encina Water Pollution Control Facility
(EWPCF). The expansion increases the EWPCF's rated secondary treatment capacity
from 22.5 million gallons per day (MGD) liquid and solids to 36.0 MGD for liquid
and 38.0 MGD for solids. The difference in capabilities is due to Encina's role
in treating solids from satellite reclamation plants in the service area. In
addition, the expansion would involve increasing peak influent capacity to 81
MGD and ocean disposal capacity to 65 MGD. These capacities are higher than the
rated plant capacities to accommodate diurnal and wet weather peaking factors.
The peak influent capacity is higher than the peak disposal capacity because the
Phase IV expansion includes some interim flow equalization that will allow
shaving of peak flows in excess of 65 MGD (up to 81 MGD). As shown in Exhibit
"B", all of the Phase IV construction will take place within the confines of the
present site. Existing facilities are shown on the photo site plan. The Phase IV Facilities are shown in outline in their proposed location.
Planninq Issues
1. Is the Phase IV expansion consistent with the General Plan, Local Coastal
Program and Growth Management Program?
2. Is the expansion consistent with the intent, purpose and specific
requirements of the P-U, Public Utility Zone?
3. Have all potential environmental impacts of the expansion been disclosed,
and where possible, a mitigation program provided?
PDP l(C) - ENCINA
MARCH 15, 1989
PAGE 2
DISCUSSION
The Phase IV expansion implements both the Land Use and Public Facilities
elements of the General Plan. It also implements Carlsbad's Growth Management
Program by providing public facilities concurrent with need, in a land area
designated for such use.
The EWPCF is located within the Mello II Segment of Carlsbad's Local Coastal
Program. The Land Use Plan for that segment has specific policies that relate
to the proposed expansion. Those policies expressly call for the Phase IV
expansion, along with the implementation of a Wastewater Reclamation Master Plan,
and a 10% reserve of Carlsbad's sewer capacity for coastal dependent land uses.
All these policies would be implemented by the project or are a part of current
City programs.
The project also implements the City Council's Action Plan for Wastewater
Treatment Capacity adopted May, 1987. That plan calls for acceleration of the
Phase IV expansion.
The Public Utilities zone requires development to be environmentally sensitive
.and compatible with surrounding land uses. The major issues in this regard are
visual and odor impacts of the project. The most sensitive land uses to these
impacts are typically residential. As shown on Attachment 3, Carlsbad's Land
Use Plan eliminates much of this potential incompatibility. The only surrounding
residential land uses are the Solamar Mobile Home Park across the railroad tracks
to the west, and Alta Mira across Interstate 5 east of the treatment facility.
The site design and landscape program shown on Exhibits "N" & "0" provides for
some significant visual buffer to surrounding land uses. Portions of the site
would be visible through the landscape screen. This landscape screen will take
a few years to grow into place. The project is conditioned to submit a detailed
landscape plan which will maximize this landscape screen.
The only other land use compatibility issue presented by the expansion is odor.
Odor was specifically addressed in the certified Environmental Impact Report
(EIR) for the expansion. That EIR proposed new odor reduction measures along
with the correction of existing odor causing facilities. The project has been
conditioned to add additional odor control facilities for the aeration basins.
The total cost of these proposed Odor Control Facilities is approximately $4
millon. With these facilities in place odors from Encina should be reduced to
an insignificant level and pose no land use compatibility concerns.
III. ENVIRONMENTAL REVIEW
The Planning Director has determined that this project has already been
considered in conjunction with a previously certified Environmental Impact Report
and therefore, has issued a Notice of Prior Environmental Compliance dated
November 12, 1988. A copy of the Environmental Impact Report is on file in the
Planning Department.
PDP l(C) - ENCINA
MARCH 15, 1989
PAGE 3
ATTACHMENTS
:: 3. 4. 5. 6. 7.
8. 9.
Planning Commission Resolution No. 2830
Location Map
Land Use Map
Environmental Document
Background Data Sheet
Disclosure Form
Letter from Encina Water Pollution Control Facilities, dated October 20, 1988
Exhibits "A" - "N", dated October 28, 1988
Exhibit "D", dated February 10, 1989
LBS:af
November 28, 1988
POLLUTION
3 N
0 2000
rEEr
ENCINA PHASE IV EXPANSION PDP-l(C)
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ENCINA PHASE IV EXPANSION PDP-1 (C)
2075 LAS PALMAS DRIVE
CARLSBA~. cA 92oo9469 TELEPHONE
(619)43e-1161
-. PLANNING DEPARTMENT
PUBLIC NOTICE OF PRIOR ENVIRONMENTAL COMPLIANCE
Please Take Notice:
The Planning Department has determined that the environmental effects of the
project described below have already been considered in conjunction with
previously certified environmental documents and, therefore, no additional
environmental review will be required and a notice of determination will be
filed.
Project Title: ENCINA EXPANSION PDP-1 (C)
PROJECT LOCATION: The Encina Water Pollution Control Facility, located at 6200
Avenida Encinas, just west of Interstate 5 and south of Palomar Airport Road in
Carlsbad, CA.
PROJECT DESCRIPTION: An expansion ofwastewatertreatment facilities and capacity
from 22.5 to 36.0 million gallons per day (MGD) liquid and 38.0 MGO solid, an
increase in ocean outfall capacity to 65 MGD, and interim flow equalization to
address peak influent flows of 81 MGO.
Justification for this determination is on file in the Planning Department, Community Development, 2075 Las Palmas Drive, Carlsbad, California 92009. Comments from the public are invited. Please submit comments in writing to the
Planning Department within ten (10) days of date of publication.
Dated: NOVEMBER 12, .I988
Case No.: POP-1 (C) Planning Oirector
Applicant: ENCINA WATER POLLUTION CONTROL FACILITY
Publish Date: NOVEMBER 12, 1988
AL:LBS:LH ENCINA.PDP
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Encina Water Pollution
Control Facility Expansion
Final Environmental Impact Report
Encina Water Pollution Control Facility
August 1988
On April 13, 1988 a Draft Environmental Impact Report for the proposed FWPCF
expansion was issued for public review, with the co: lent p.eriod extending until July 15,
1988. During this review period (May 4,1988) a pubiic meeting was held at the Carlsbad
Safety Center to outline the proposed project and allow a forum for discussion and
comment. The comments received from both the public meeting and document distribution
I contained 32 specific points. These written responses (transcribed from the public
meeting) along with keyed responses are contained on the following pages.
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-. * . - ’ \ \ . ‘DISCLOSURE FORM ’
APPLICANT I -Administrative wv
Nake (individual, partnership, joint venture, corporation, syndication)
6200 Avenida Encinas, Carlsbad, CA 92009-0171 Business Address
(619) 438-3941
Telephone Number
AGENT: John Carollo Engineers Name
10840 Warner Avenue, Suite 100, Fountain Valley, CA 92700 Business Address
(714) 963-9851 Telephone Number
MEMBERS:
Name (individual, partner, joint
venture, corporation, syndication)
Home Address
Business Address
Telephone Number Telephone Number
Name Home Address
Business Address
Telephone Number Telephone Number
(Attach more sheets if necessary)
I/We understand that if this project is located in the Coastal Zone, I/we will apply
for Coastal Commission Approval prior t,o development.
I/We acknowledge that in the process of reviewing this application, it .may be
necessary for members of City Staff, Planning Commissioners, Design Review Board
members, or City Council members to inspect and enter the property that is the
subject of this application. l/We consent to entry for this purpose.
I/We declare under penalty of perjury that the information contained in this disclosure
is true and correct and that it will remain true and correct and may be relied upon as being true and correct until amended.
APPLICANT
BY
WATER
wuurwd
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ENCINA WATER POLLUTION CONTROL FAClLlTY
October 20, 1988
6200 Avenida Encinas
Carlsb‘ld, CA 92009-017 1
Telephones (6 19) 4.1&31)3 I
Ref: 132.5125
City of Catlsbad Planning Department 2075 Las Palmas Drive Carlsbad, CA 92009-4859
Attention: Mr. Michael Holzmiller, Planning Director
Subject: Encina Water Pollution Control Facility Phase IV Expansion Precise Development Plan
Transmitted herein is the completed application for an amendment to the current Precise Development Plan (PDP-l(B)) to implement the pro- posed Phase IV Expansion of the Encina Water Pollution Control Facility.
The Phase IV Expansion would increase the wastewater liquid treatment capacity from 22.5 million gallons per day (MGD) to 36.0 MGD and the solids treatment capacity from 22.5 MGD to 38.0 MGD. The requirement for the additional 2.0 MGD of solids capacity is to accommodate the solids contribution from the upstream reclamation plants within the service area. According to SANDAG series 7 population projections, the Phase IV Expansion would provide treatment capacity through the year 2010; however, member agencies project that they will run out of capacity between the year 2000 and the year 2005.
This letter serves as a supplement to the Specific Requirements of your Precise Development Plan (PDP) application. It is intended to address the concerns expressed by the City Planning Department during your review of the draft Environmental Impact Report (EIR) for the Year 2020 Facility Plan and during our meeting on July 21, 1988. The following topics are described herein:
1. Background of Project, 2. Process Descriptions, 3. Description of New Facilities, 4. Visual Impacts of Structure Heights, 5. Facility Landscaping, 6. Odor Control, and 7. Parking Considerations.
SERVING THE CITY OF VISTA. CITY OF CARLSBAD. EUENA SANITATION DISTRICT. SAN MARCOS COUNTI CVAILR IJISIRICT.
LEUCADIA COUNTY WATER DlSrRlCT AND ENCINITAS SANITARY DlSTRlCr
Ref: 1312.5125.1
BACKGROUND OF PROJECT
The Encina. Water Pollution Control Facility (WPCF) is owned and operated by the,Encina Joint Powers, whose members include the City of Vista, the City of Carlsbad, the Leucadia County Water District, the San Marco9 County Water District, the Encinitas Sanitary District, and the Buena Sanitation District. The Encina Administrative Agency has been formed to act as the operator/administrator of the Encina Water Pollution Control Facility.
In 1987, Encina's Joint Advisory Committee (JAC) authorized John Carollo Engineers (JCE) to prepare a facility plan evaluating treat- ment needs at the Encina Water Pollution Control Facility through the year 2020. The facility plan identifies treatment needs for the next increment of capacity (Phase IV) as well as long-term treatment needs. The Phase IV project and final facility plan have been approved by the JAC and approved and adopted by the member agencies.
One result of the planning process was the decision by the member agencies to abandon the waiver alternatives and proceed with an expan- sion alternative that provides full secondary treatment. (The waiver mode provides treatment to meet the California Ocean Plan. Overall, seventy-five percent of the wastes for solids are removed. Full secondary removes at least 85 percent of the solids and biochemical oxygen demand.)
After the start of the Year 2020 Facility Plan preparation, JAC authorized WESTEC Services, Inc. to prepare an EIR for the Facility Plan. In addition to the public hearing on the draft EIR, as required by the California Environmental Quality Act (CEQA), JAC voted to expand the public participation effort beyond the minimum requirements by holding scoping sessions during the preparation of the draft EIR. As a result, three scoping sessions were held as follows:
LOCATION DATE
Encinitas Planning Commission September 15, 1987 Vista Planning Commission September 22, 1987 Carlsbad City Council Octob'er 13, 1987
The draft EIR was completed April 13, 1988 after which a notice inviting public comments was published in seven local newspapers. A special public meeting was held in Carlsbad to obtain comments on May 4, 1988. A public hearing prior to certification of the EIR was held by the Leucadia County Water District on August 11, 1988. The EIR was 3 formally certified following the public :hearinq.
The design of the Phase IV Expansion is in progress by John Carollo Engineers. The contract completion date for the design effort is scheduled for January 31, 1989. The present schedule for the construc- tion of the Phase, IV Expansion is from August 1, 1989 to July 31, 1991.
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ENCINA WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas, Carlsbad, CA 92009-017 1 (619) 438-394 1
‘. * ’ .
PROCESS DESCRIPTIONS
Ref: 132.5125.2
The Encina Water Pollution Control Facility incorporates preliminary, primary, and secondary treatment processes. treatment, disposed of by septage haulers, Solids removed during and discharged from upstream reclamation plants are final disposal. stabilized and dewatered prior to The treated wastewater is disposed of through an ocean outfall and diffuser. A portion of the flow is reclaimed and reused throughout the plant. (wastewater) and solids A schematic representation of the liquid (sludge) flows through the Encina Water Pollution Control Facility is given on the attached Figure IV-3 from the Year 2020 Facility Plan.
The wastewater is conveyed to the plant through several interceptors that meet at the influent junction structure. Septage'disposal flows to the junction structure from an on-site dumping station. The com- bined flow first receives preliminary treatment consisting of 3 bar screens to remove large solids such as rags and sticks, and 2 grit chambers to remove inorganic solids such as sand. If the solids were not removed in this step, they could damage downstream equipment and pumps. The screenings and grit are disposed of in a County landfill. -
Primary treatment relies on physical factors alone to remove almost two-thirds of the wastewater suspended solids and more than one-third of oxygen consuming pollutants measured as five-day, biochemical oxy- gen demand (BOD). This is accomplished by allowing the wastewater to settle in large, quiescent basins. Presently there are 6 primary clarification basins. The removed solids are collected to one end of the basins and pumped to the solids stabilization processes (digesters). The quiescent conditions allow lighter materials and oils and grease to float to the surface. These materials are referred to as scum. The scum is skimmed from the surface and disposed of at a County landfill.
A portion of the primary effluent currently flows directly to the out- fall system where it is blended with secondary effluent prior to ocean disposal. More than half the flow is given secondary treatment in an accelerated biological degradation process known as activated sludge. Activated sludge facilities include 2 aeration basins where a popula- tion of microorganisms is maintained. The organisms are aerobic and need oxygen. Air is d,iffused through the basins to maintain a dissolved oxygen content. The microorganisms use the organic material contained in the primary effluent as food for maintenance and repro-. duction. The resulting activated sludge flows into 4 secondary clari- fiers where the organisms settle. The clarified effluent has routinely achieved more than 90 percent removal of the BOD and suspended solids. The settled solids made up of the biological orga- nisms are returned to the aeration basins so the organisms can treat more wastewater. Some of the sludge is excess and is wasted to the solids stabilization process (first .to a thickening process, then to the digesters).
ENCINA WATER POLLlJrlON CONTROL EACILITY
6200 Avenida Encinas, Carlsbad, CA 92009-0171 (619) 438-3941
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Ref: lE2.5125.3
The ocean outfall is a pipe that extends 7,800 feet into the Pacific Ocean. The end of the outfall consists of a series of ports or dif- . fusers. The diffuser section is at an average depth of 150 feet. Blended primary and secondary effluent is discharged through this,out-
fall at the effluent pump station. During periods of lower flows and tides, dischar<e through the outfall is by gravity. At higher flow and tidal periods, effluent must be pumped through the outfall. The peak outfall pumping capacity is 61.6 MGD. *
The solids from the primary and secondary treatment steps are stabi- lized in 4 anaerobic digesters. The digesters are closed tanks that hold a population of organisms that can live only in the absense of
oxygen. They convert the volatile matter in the sludge into methane, carbon dioxide and other gases. Typically, half of the volatile matter is removed resulting in a stable sludge that can be reused or disposed of with less chance of causing odors or other nuisances. A portion of the methane gas is used as an engine fuel that drives blowers that provide air to the activated sludge aeration basins.
The secondary solids are thickened in 2 dissolved air flotation (DAF) thickening tanks prior to digestion. This process reduces the water content of the sludge and thus reduces the hydraulic loading on the digester units.
The digested sludge is over 95 percent water by weight. Prior to disposal the digested sludge is 'dewatered in 4 belt filter presses. Each press is made up of two continuous belts and a series of rollers. The water in the sludge drains through the belts by a combination of gravity and pressure. The dewatered sludge is hauled from the EWPCF for disposal at the Otay landfill and for beneficial reuse on agricultural lands in Riverside County and Arizona. As part of a separate project, Encina is working on siting a cornposting facility elsewhere in North County.
Presently the bar screens and belt presses are enclosed in buildings and the grit chambers, primary clarifiers and DAF thickeners are covered for odor containment. Air from these areas is collected and processed in 2 odor reduction facilities.
Most of the electrical power used at the EWPCF is generated onsite. The generators are driven by gas engines that were designed to burn a blend of natural gas from the San Diego Gas and Electric Company (SDG&E) and digester gas. However, as a result of restrictions set by the San Diego County Air Pollution Control District (APCD) and PUC/ SDG&E rate schedules, the engine generators presently use natural gas only. The EWPCF will make an applicatiqn to the APCD shortly to make engine modifications to more fully utilize digester gas. Waste engine heat from these engines and blower engines is recovered to heat the digesters to a desired 95OF temperature, and is also used to air con- dition and heat the Power Building and Operations Building.
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ENCINA WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas, Carlsbad, CA 92009-0171 (619) 438-3941
-* " DESCRIPTION OF N
To expand the Encina
Ref: LCL.a*.Ld.f i-ALITIES
WPCF treatment capacity from 22.5 MGD to 36.0 MGD/ --_ 38.0 MGD (liquid/solids), the following unit process elements will be constructed:
1. 2. Addition of one new bar screen in the existing screenings building One new 35' x 24' grit chamber 3. Four new 160' x 20' primary clarifiers
4. Two new 380' x 70' aeration basins 5. Four new 105' diameter secondary clarifiers 6. One new 40' diameter DAF thickener 7. Two new 95' diameter anaerobic digesters 8. A 4900 square foot (sf) addition to the Sludge Dewatering Building including (4) new belt presses 9. A third odor reduction facility 10. One new 10,000 gallon primary scum storage tank 11. One new effluent outfall pump and an extension of the existing surge tower
In addition, prior to commencement of Phase IV construction (i.e., for a period of approximately ten months), representatives from the construction management firm will have limited office space in a used trailer at the Encina site. This trailer will be removed and replaced with larger temporary offices once construction begins.
The fourth aeration basin and the seventh and eighth secondary clari- fiers will serve as (peak) flow equalization basins until they are required for process treatment (during Phase V). This will postpone the need to construct additional outfall pipeline capacity.
In addition to. the process units, a new 4200 sf Maintenance Storage Building will be constructed to replace the existing metal storage building, which will be demolished as part of this project. The existing waste digester gas burners will be relocated to accomodate this construction. The architectural theme of the new building will match the existing buildings (stucco, tile roof, etc).
Four new belt presses will be installed in an addition to the existing Dewatering Building. The purpose of the new presses will be to achieve a higher dewatered cake solids. This in turn will have a beneficial impact on reduction of hauling and disposal/reuse costs. The building addition architecture will match the existing.
A summary of the existing and planned (Phase IV) land utilization is as follows:
Lot Coveraqe Unit Existing New Proposed Total
Site Area acres 25.56 0 25.56 Building Coverage sf 43,300 * 9,100 52,400
Paved Area 8 15 (-L) 17 Landscaped Area 8 68 55 Unimproved Area % 0 0 0 .
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ENCINA WATtH POLLUTION CON lHC)L f-A(:lLf rt
6200 Avenida Encinas, Carlsbad, CA 92009-0171 (619) 438-3941
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Ref: 132.5125.5
VISUAL IMPACT OF STRUCTURE HEIGHTS
Most of the treatment processes (i.e., grit chambers, primary clari-. fiers, aeration basins and secondary clarifiers) extend only a few feet above grade. The top of the new DAF thickener will extend approximately 6 feet above grade, the same as the 2 existing units.
The structures which could have potentially significant visual impacts due to their elevations are the new digesters, the dewatering building addition, the new odor reduction facility, the new maintenance etorage building, the new primary scum storage tank, and the extension of the effluent surge tower.
The 2 new anaerobic digesters will be constructed to the same height as the 4 existing units. The top of the digester wall will be approximately 20 feet above grade, with the top of the cover dome extending an additional 9.5 feet above the top of the wall. The digesters will be visible from the I-5 freeway as they abut the easterly property line. They will, however, act to screen a major portion of the power and dewatering buildings from the.southbound lane. The digester walls and covers are to be painted to blend in with the wall and roof color scheme of the Encina WPCF buildings.
The dewatering building addition will be a 2 story structure approxi- mately 70 feet x 70 feet in area. The top of the parapet wall will be approximately 45 feet above grade and 7 feet higher than the top of the existing sludge dewatering building to allow access to the belt filter presses. The new addition for the most part will be screened from the freeway by the new digesters.
The new odor reduction facility will consist of two 9 foot diameter fiberglass towers, 40 feet in. height and two 14 foot square concrete towers, '30 feet in height. There will also be some low profile pumps and fans associated with this system. The entire facility will be screened from the freeway by the dewatering building addition. The concrete towers would be visible from Avenida Encinas. They can be painted to match the exterior of the adjacent building.
The new maintenance storage building will extend approximately 18 feet above grade. It will abut the easterly property line and can be par- tially screened from the freeway with landscaping.
A new scum storage tank, identical to the existing storage tank, will be located adjacent to the existing tank. The tanks are white fibergalss and extend 15 feet above grade. The tanks are completely screened from the freeway.
The effluent surge tower must be above grade) 8 feet in elevation increase. The extension will be materials of the existing surge Ave-nida Encinas.
extendedtto a total of 17.5 feet to prevent overtopping as flows formed from concrete to match the tower, but will be visible from
ENCINA WATEK POLLLITtON CON IHOI I A(‘11 I I <
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FACILITY LANDSCAPING
- Ref: lE2.5125.6
The ,emphasis of the Phase IV preliminary landscaping plan is on screening the facility from traffic on I-5 and from residents east of I-5. To this end, we are proposing to plant shrubs along the west side of I-5 and trees further down the slope: species shown on the attached plan are representative of the size and shape of planting material envisioned, but do not represent final selections. as well as our-*proposal to irrigate The entire plan, the slope with reclaimed water, must be reviewed and approved by Caltrans, and we must obtain a permit for any work or plantings in the Caltrans easement.
ODOR CONTROL
The new grit chamber, primary clarifiers, and DAF thickener will be covered as are the existing to control odors. Foul air collected from under the covers will be treated in one of the odor reduction facili- ties (ORF).
The new odor reduction facility at the Dewatering Building will pro- vide for the building extension as well as improve ventilation in the existing building. Additional foul air collection will be incorporated in the existing and new primary clarifiers to further reduce fugitive odors. The collected foul air will be treated in an ORF.
Other Phase IV odor control improvements include:
1. The older (small) digesters will be taken out of service as the new digesters come on line, and 2. The septage disposal facility will be modified to further contain septage odors.
These improvements will help control odors from some areas of the plant. However, Encina's ongoing odor control program indicates that complaints are received for odors from several sources. The attached tables and figures summarize the number of odor complaints received during 1986 through 1988 and the sources of the odors complained about in 1987 and 1988.
Because the largest number of complaints have been due to odors origi- nating from the aeration basins (the "secondaries"), JCE was asked to prepare a cost estimate for covering these basins and collecting and treating foul air from under the covers. The estimated cost for covering both the existing and new aeration basins was $3.4 million. (The estimated cost of the Phase IV expansion without covering the aeration basins is $48.8 million.)
Given the relatively low number of complaints and the relatively high cost of covering the aeration basins, this method of further controlling odors does not appear cost-effective at this time. Yowever, JCE has been directed to design new aeration basins that could be retrofitted with covers if the need arises at a future date.
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ENCINA WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas, Carlsbad. CA 92009-0171 (619) 438-3941
1 3 5 7 9 11
Jan. 19885 Dec.
MONTHLY COMFLA I NTS
1987 ODOR COMPLA I NTS
Jan. 1987 Dec.
MONTHLY COMFCAIMTS
1988 OOOR COMPLA I NTS
1
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MONTHLY COMFLA I EITS
TOTAL COkU'LJiINTS
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TOTAL coNPLAINTs
10
ToTALcoMPLAINTs
23 (Total)
REVISED 10-3-88
-
ODOR COMPLCIINT F'ROFILE 1987 - 1988
-------------------- ---------------------------
1987 . . . . . . . . . . . . . . . . . . . . . . . . ..*........................
AREA COMPLCIINTS
---------------------- ----------
PRIMARY/SEPTIC DISPOSAL 1
SECONDARY 5 * 1 - RAS FLOW SIGNAL
DIGESTERS Cl
WASTE GCSS BURNER 1 * 1 - BURNER FLAME
UNKOWN 3
---------- TOTAL 10
COMMENT: 20% OF COMPLAINTS IN lY87
FAILURES
PERCENT
--------
10%
50%
0%
10%
33%
------- low!
DUE TO MECHANICAL
1988 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..**..........
AREA COMPLAINT FERCENT
---------------------- --------- ----m--w
FRIM~RY/SEPTIC DISPOSAL 5 30% * 1 - DYE TEST CL2 OFF
SECONDARY 13 57% * 1 - TANK CHANGE OVER * 1 - RAS FLOW SIGNAL
Ub - CO-GEN SHUT DOWN .
DIGESTERS 1 4% * 1 - GAS VENT CONST. WORK
WCISTE G&S BURNERS 0 0%
UNKNOWN 2 9%
--------- -------- TOTAL 23 100%
COMMENT : 43% OF COMPLAINTS IN 1988 DUE TO MECHANICAL
FhILURES
-
Ref: 132.5125.7
PARKING CONSIDERATIONS
Currently, there are 42 parking spaces at the EWPCF. There are a
total of 50.5 employees, However, due to shift scheduling, only a maximum of 38 employees are on site at any given time.
2010, the projgcted staffing by the department is: For the year
1. Administration 12 2. Resource Recovery 1 3. Technical Services 11 4. Operations and Maintenance Total 49 73
Again, because of shift scheduling, the maximum number of employees on site would be 63.
As part of on-going planning, the EWPCF.is evaluating moving some administrative and technical functions to a building offsite. In this case, the maximum number of employees on-site may be reduced to 46. Until this move is finalized, we propose adding as an interim measure 20 on-site parking places south of the existing Operations Building. If the administrative functions are not moved offsite, an expansion to the existing Operations Building will be required. Parking would be addressed again at that time.
We hope that this helps clarify the intent and details of the proposed Phase IV expansion. To enable you to more easily visualize the existing facilities and proposed expansion, we would like to invite you # your staff, and members of the Planning Commission to tour the plant. This invitation is partly in response to a suggestion by mem-. bers of the Commission during their September 21, 1988 meeting. If you are interested in scheduling a tour or if you need additional information, please call Ms. Betty Meyer at (6191438-3941.
Very truly yours,
General Managed
ELM:RWG:kw Attachments
pc: Lloyd Hubbs
Betty Meyer Dennis Wood
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ENCINA WATER POLLUTION CONTKOL FACILI 1Y
6200 Avenida Encinas, Carlsbad, CA 92009-0171 (619) 438-3941
/ . . * .
- C’ \ ‘DISCLOSURE FORM ’
. . APPLICANT: anls rat ive Aapuv
Naie (individual: partnership, joint venture, corporation, syndication
6200 Avenida Encinas. Carlsbad, CA 92009-0171
Business Address
(619) 438-3941
Telephone Number
AGENT: John Carollo Engineers Name
10840 Warner Avenue. Suite 100, Fountain Valley, CA 92700 Business Address
(71.4) 963-9851 Telephone Number
MEMBERS:
Name (individual, partner, joint
venture, corporation, syndication)
Home Address
Business Address
Telephone Number Telephone Number
Name Home Address
Business Address
Telephone Number Telephone Number
(Attach more sheets if necessary)
I /We understand that if this project is located in the Coastal Zone, I/we will apply
for Coastal Commission Approval prior to development.
I/We acknowledge that in the process of reviewing this application, it may be
necessary for members of City Staff, Planning Commissioners, Design Review Board
members, or City Council members to inspect and enter the property that is the
subject of this application. I/We consent to entry for this purpose.
I/We declare under penalty of perjury that the information contained in this disclosure
is true and correct and that it will remain true and correct and may be relied upon
as being true and correct until amended.
APPLICANT
l .
ENCINA WATER POLWTION CONTROL FACILITY
6200 Avenida Encinas
October 20, 1988 Carlsb,ld, CA 92009-017 1
Telephones (6 19) 4 W-394 I
Ref: lE2.5125
City of Carlsbad Planning Department 2075 Las Palmas Drive Carlsbad, CA 92009-4859
Attention: Mr. Michael Holzmiller, Planning Director
Subjectr Encina Water Pollution Control Facility Phase IV Expansion Precise Development Plan
Transmitted herein is the completed application for an amendment to
the current Precise Development Plan (PDP-l(B)) to implement the pro- posed Phase IV Expansion of the Encina Water Pollution Control Facility.
The Phase IV Expansion would increase the wastewater liquid treatment capacity from 22.5 million gallons per day (MGD) to 36.0 MGD and the solids treatment capacity from 22.5 MGD to 38.0 MGD. The requirement for the additional 2.0 MGD of solids capacity is to accommodate the solids contribution from the upstream reclamation plants within the service area. According to SANDAG series 7 population projections, the Phase IV Expansion would provide treatment capacity through the year 2010: however, member agencies project that they will run out of capacity between the year 2000 and the year 2005.
This letter serves as a supplement to the Specific Requirements of your Precise Development Plan (PDP) application. It is intended to address the concerns expressed by the City Planning Department during your review of the draft Environmental Impact Report (EIR) for the Year 2020 Facility Plan and during our meeting on July 21, 1988. The following topics are described herein:
1. Background of Project, 2. Proce88 Descriptions, 3. Description of New Facilities, 4. Visual Impacts of Structure Heights, 5. Facility Landscaping, 6. Odor Control, and 7. Parking Considerations.
SERVING THE CITY OF VISTA. ClrY OF CARLSEAO. BUENA SANlTAllON OtSlRlCT, SAN MARCOS CO~dry wAI[R DISIRIC~,
LE~~~AOIA COUNTY WATER OlSlRlCT AN0 ENCINITAS SANITARY DISTRICT
Ref: 132.5125.1
BACKGROUND OF PROJECT
The Encina. Water Pollution Control operated by the Encina Joint Powers, Facility (WPCF) is owned and
Vista, the Ci.ty of Carlsbad, whose members include the City of the Leucadia County Water District, the San Marcos County Water District, the Buena Sanitation District. the Encinitas Sanitary District, and The Encina Administrative Agency has been formed to act as the operator/administrator Of the Encina Water Pollution Control Facility.
In 1987, Encina's Joint Advisory Committee (JAC) authorized John Carollo Engineers (JCE) to prepare a facility plan evaluating treat- ment needs at year 2020. the Encina Water Pollution Control Facility through the The facility plan identifies treatment needs for the next increment of capacity (Phase IV) as well as long-term treatment needs. The Phase IV project and final facility plan have been approved by the JAC and approved and adopted by the member agencies.
One result of the planning process was the decision by the member agencies to abandon the waiver alternatives and proceed with an expan- sion alternative that provides full secondary treatment. (The waiver mode provides treatment to meet the California Ocean Plan. Overall, seventy-five percent of the wastes for solids are removed. Full secondary removes at least 85 percent of the solids and biochemical oxygen demand.)
After the start of the Year 2020 Facility Plan preparation, JAC authorized WESTEC Services, Inc. to prepare an EIR for the Facility Plan. In addition to the public hearing on the draft EIR, as required by the California Environmental Quality Act (CEQA), JAC voted to expand the public participation effort beyond the minimum requirements by holding scoping sessions during the preparation of the draft EIR. As a result, three scoping sessions were held as follows:
LOCATION DATE
Encinitas Planning Commission September 15, 1987
Vista Planning Commission September 22, 1987
Carlsbad City Council October 13, 1987
The draft EIR was completed April 13, 1988 after which a notice inviting public comments was published in seven local newspapers. A special public meeting was held in Carlsbad to obtain comments on May 4, 1988. A public hearing prior to certification of the EIR was held by the Leucadia County Water District on August 11, 1988. The EIR was formally certified following the public hearing.
The design of the Phase IV Expansion is in progress by John Carollo Engineers. The contract completion date for the design effort is scheduled for January 31, 1989. The present schedule for the construc- tion of the Phase IV Expansion is from August 1, 1989 to July 31, 1991.
.
ENCINA WATER POLLUTION CON rROL FAClLl TY
6200 Avenida Encinas. Carlshad, CA 92009-0171 (619) 438-3941
PROCESS DESCRIPTIONS
Ref: 132.5125.2
The Encina Water Pollution Control Facility incorporates preliminary, primary, and secondary treatment processes. treatment, disposed of by septage haulers, Solids removed during and discharged from upstream reclamation plants are final disposal. stabilized and dewatered prior to The treated wastewater ocean outfall and diffuser. is disposed of through an A portion of the flow is reclaimed and reused throughout the plant. A schematic representation of the liquid (wastewater) and solids (sludge) flows through the Encina Water Pollution Control Facility is given on the attached Figure IV-3 from the Year 2020 Facility Plan.
The wastewater is conveyed to the plant through several interceptors that meet at the influent junction structure. Septage’disposal flows to the junction structure from an on-site dumping station. The com- bined flow first receives preliminary treatment consisting of 3 bar screens to remove large solids such as rags and sticks, chambers to remove inorganic solids such as sand. and 2 grit If the solids were not removed in this step, they could damage downstream equipment and pumps. The screenings and grit are disposed of in a County landfill.
Primary treatment relies on physical factors alone to remove almost two-thirds of the wastewater suspended solids and more than one-third of oxygen consuming pollutants measured as five-day, biochemical oxy- gen demand (BOD). This is accomplished by allowing the wastewater to settle in large, quiescent basins. clarification basins. Presently there are 6 primary The removed solids are collected to one end of the basins and pumped to the solids stabilization processes (digesters). The quiescent conditions allow lighter materials and oils and grease to float to the surface. These materials are referred to as scum. The scum is skimmed from the surface and disposed of at a County landfill.
A portion of the primary effluent currently flows directly to the out- fall system where it is blended with secondary effluent prior to ocean disposal. More than half the flow is given secondary treatment in an accelerated biological degradation process known as activated sludge. Activated sludge facilities include 2 aeration basins where a popula- tion of microorganisms is maintained. The organisms are aerobic and need oxygen. Air is d,iffused through the basins to maintain a dissolved oxygen content. The microorganisms use the organic material contained in the primary effluent as food for maintenance and repro-. duction. The resulting activated sludge flows into 4 secondary clari- f iers where the organisms settle. The clarified effluent has routinely achieved more than 90 percent removal of the BOD and suspended solids. The settled solids made up of the biological orga- nisms are returned to the aeration basins so the organisms can treat more wastewater. Some of the sludge is excess and is wasted to the solids stabilization process (first .to a thickening process, then to the digesters). -- 8% ,.. 1.IC. . ..I 1”1. ,%,.,,,. I a* .I,. a I,v,,nr N#“,h \.,,I ,rww , ,,tm,*
ENCINA WArtR POLLUTION CONrROL FACILITY
6200 Avenida Encinas, Carlsbad. CA 92009-017 1 (6 19) 438-394 1
-
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Reft lE2.5125.3
The ocean outfall is a pipe that extends
Ocean. The end of the 7,800 feet into the Pacific
fusers. The diffuser outfall consists of a Series of ports or dif- section is at an average depth of 150 feet. Blended primary and secondary effluent is discharged through this out- fall at the ef-fluent pump station. During periods of lower flows and tides, discharge through the outfall is by gravity. and tidal periods, At higher flow effluent must be pumped through the outfall. The peak outfall pumping capacity is 61.6 MGD.
The solids from the primary and secondary treatment steps are stabi- lized in 4 anaerobic digesters. The digesters are closed tanks that hold a population of organisms that can live only in the absense of oxygen. They convert the volatile matter in the sludge into methane, carbon dioxide and other gases. Typically, half of the volatile matter is removed resulting in a stable sludge that can be reused or disposed of with less chance of causing odors or other nuisances. A portion of , the methane gas is used as an engine fuel that drives blowers that provide air to the activated sludge aeration basins.
The secondary solids are thickened in 2 dissolved air flotation (DAF) thickening tanks prior to digestion. This process reduces the water content of the sludge and thus reduces the hydraulic loading on the
digester units.
The digested sludge is over 95 percent water by weight. Prior to disposal the digested sludge is dewatered in 4 belt filter presses. Each press is made up of two continuous belts and a series of rollers. The water in the sludge drains through the belts by a combination of gravity and pressure. The dewatered sludge is hauled from the EWPCF for disposal at the Otay landfill and for beneficial reuse on agricultural lands in Riverside County and Arizona. As part of a
separate project, Encina is working on siting a cornposting facility elsewhere in North County.
Presently the bar screens and belt presses are enclosed in buildings and the grit chambers, primary clarifiers and DAF thickeners are covered for odor containment. Air from these areas is collected and processed in 2 odor reduction facilities.
Most of the electrical power used at the EWPCF is generated onsite. The generators are driven by gas engines that were designed to burn a blend of natural gas from the San Diego Gas and Electric Company
(SDG&E) and digester gas. However, as a result of restrictions set by the San Diego County'Air Pollution Control District (APCD) and PUC/ SDG&E rate schedules, the engine generators presently use natural gas only. The EWPCF will make an application to the APCD shortly to make engine modifications to more fully utilize digester gas. Waste engine heat from these engines and blower engines is recovered to heat the digesters to a desired 95OF temperature, and is also used to air con- dition and heat the Power Building and Operations Building. **,.. ..II. ..I. WI .I..‘B.n I.. .,I. a ENCINA WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas, Carlsbad. CA 92009-017 1 (619) 438-3941
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-
DESCRIPTION OF , _ 'A-rLITIES Ref: iE2.>~25.4
To expand the Encina WPCF treatment capacity from 22.5 MGD to 36.0 MGD/ 38.0 MGD (liquid/solids), constructedr the following unit process elements will be
1. 2. Addition Of one new bar screen in the existing screenings building One new 35' x 24' grit chamber 3. Four new 160' x 20’ primary clarifiers 4. Two new 300' x 70' aeration basins 5. Four new 105' diameter secondary clarifiers 6. One new 40' diameter DAF thickener 7. Two new 95' diameter anaerobic digesters 8. A 4900 square foot (sf) addition to the Sludge Dewatering Building including (4) new belt presses 9. A third odor reduction facility 10. One new 10,000 gallon primary scum storage tank 11. One new effluent outfall pump and an extension of the existing surge tower
In addition, prior to commencement of Phase IV construction (i.e., for a period of approximately ten months), representatives from the
'I construction management firm will have limited office space in a used trailer at the Encina site. This trailer will be removed and replaced with larger temporary offices once construction begins.
The fourth aeration basin and the seventh and eighth secondary clari- fiers will serve as (peak) flow equalization basins until they are required for process treatment (during Phase V). This will postpone the need to construct additional outfall pipeline capacity.
In addition to the process units, a new 4200 sf Maintenance Storage Building will be constructed to replace the existing metal storage building, which will be demolished as part of this project. The existing waste digester gas burners will be relocated to accomodate this construction. The architectural theme of the new building will match the existing buildings (stucco, tile roof, etc).
Four new belt presses will be installed in an addition to the existing Dewatering Building. The purpose of the new presses will be to achieve a'higher dewatered cake solids. This in turn will have a beneficial impact on reduction of hauling and disposal/reuse costs. The building addition architecture will match the existing.
A summary of the exiating and planned (Phase IV) land utilization is as follows:
Lot Coverage Unit Existing New Proposed Total
Site Area acres 25.56 0 25.56 Building Coverage sf 43,300 , 9,100 52,400 Paved Area % 15 17 Landscaped Area % 68 (-13) 55 Unimproved Area % 0 0 0
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ENCINA WATEK POLLUTION CONfKOL FACILITk
6200 Avenida Encinas, Carlsbad, CA 92009-0171 (619) 438-3941 \“,,“” W”,h WI I>mn r nvnw
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Ref: 132.5125.5
VISUAL IMPACT OF STRUCTURE HEIGHTS
Most of the treatment processes (i.e., grit chambers, primary clari-
fiers, aeration basins and secondary clarifiers) extend only a few
feet above grade. The top of the new DAF thickener will extend approximately 6 feet above grade, the same as the 2 existing units.
The structures which could have potentially significant visual impacts ,due to their elevations are the new digesters, the dewatering building addition, the new odor reduction facility, building, the new maintenance storage the new primary scum storage tank, and the extension of the effluent surge tower.
The 2 new anaerobic digesters will be constructed to the same height as the 4 existing units. The top of the digester wall will be approximately 20 feet above grade, with the top of the cover dome extending an additional 9.5 feet above the top of the wall. The digesters will be visible from the I-5 freeway as easterly property line. they abut the They will, however, act to screen a major portion of the power and dewatering buildings from the southbound lane. The digester walls and covers are to be painted to blend in with the wall and roof color. scheme of the Encina WPCF buildings.
The dewatering building addition will be a 2 story structure approxi- mately 70 feet x 70 feet in area. The top of the parapet wall will be approximately 45 feet above grade and 7 feet higher than the top of the existing sludge dewatering building to allow access to the belt filter presses. The new addition for the most part will be sdreened from the freeway by the new digesters.
The new odor reduction facility will consist of two 9 foot diameter fiberglass towers, 40 feet in height and two 14 foot square concrete towers, 30 feet in height. There will also be some low profile pumps and fans associated with this system. The entire facility will be screened from the freeway by the dewatering building addition. The concrete towers would be visible from Avenida Encinas. They can be painted to match the exterior of the adjacent building.
The new maintenance storage building will extend approximately 18 feet above grade. It will abut the easterly property line and can be par- tially screened from the freeway with landscaping.
A new scum storage tank, identical to the existing stora-ge tank, will be located adjacent to the existing tank. The tanks are white fibergalss and extend 15 feet above grade. The tanks are completely screened from the freeway.
The effluent surge tower must be extended(to a total of 17.5 feet above grade) 8 feet in elevation to prevent overtopping as flows increase. The extension will be formed from concrete to match the materials of the existing surge tower, but will be visible from Avenida Encinas.
ENCINA WATER POLLUTION CONIKOI l:I(‘II I ) ‘I’
62(x) Avenida Encjn.ls. Carlshd. (‘A ‘)Zot)H-(1171 (0)‘)) 4 \I\- VMl. If~l’Il 4 !I! Vi.1
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FACILITY LANDSCA~IL.~
The 1 emphasis of the Phase IV preliminary scr landscaping plan is on
I-5 eening the facility from traffic on I-5 and from residents east of To this end, of we are proposing to plant shrubs along the west side i-5 and trees further down the slope : species shown on the attached plan are representative of the size and shape of planting material envisioned, but do not represent final selections. The entire plan, as well as our proposal to irrigate the slope with reclaimed water, must be reviewed and approved by Caltrans, and we must obtain a permit for any work. or plantings in the Caltrans easement.
ODOR CONTROL
The new grit chamber, primary Clarifiers, and DAF thickener will be covered as are the existing to control odors. Foul air collected from under the covers will be treated in one of the odor reduction facili- ties (0~).
The new odor reduction facility at the Dewataring Building will pro- vide for the building extension as well as improve ventilation in the existing building. Additional foul air collection will be incorporated in the existing and new primary-clarifiers to further reduce fugitive odors. The collected foul air will be treated in an ORF.
Other Phase IV odor control improvements include:
1. The older (small) digesters will be taken out of service as the new digesters come on line, and 2. The septage disposal facility will be modified to further contain septage odors.
These improvements will help control odors from some areas of the plant. However, Encina's ongoing odor control program indicates that complaints are received for odors from several sources. The attached tables and figures summarize the number of odor complaints received during 1986 through 1988 and the sources of the odors complained about in 1987 and 1988.
Because the largest number of complaints have been due to odors origi- nating from the aeration basins (the "secondaries"), JCE was asked to prepare a cost estimate for covering these basins and collecting and treating foul air from under the covers. The estimated cost for covering both the existing and new aeration basins was $3.4 million. (The estimated cost of the Phase IV expansion without covering the aeration basins is $48.8 million.)
Given the relatively low number of complaints and the relatively high cost of covering the aeration basins, this method of further
controlling odors does not appear cost-e'ffective at this time. However,
JCE has been directed to design new aeration basins that could be retrofitted with covers if the need arises at a future date.
,’ I% . . ..II. m111 **s. II1.lW, , .< .I,, a ENClNh WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas, Carlsbad, CA 92009-0171 (619) 438-3941
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:
1 gsg ODOR COt-IFLk I E(TC, TOTAL COf%'LAINT!
21
J&l. 1985 Dec.
MONTHLY CSIIFLA I NTS
19r3? OOOR COMFLU I NTS
.<. .. ..*... .......
...... . ........
Jan. 1987 Dec.
MOE4THCY COMPLAINTS
10
9
8 7
G 5
4
3
2 1
8
1988 OOOR COMPLAINTS TOTAL COMPLAINTS
23 (Total1
Jan. 1988 Dt?C.
tIOE4THLY COMFLA I HTS
TOTAL COMPLAINTS
10
REVISED 10-3-88
-
ODOR COMPLAINT PROFILE
1987 - 1998
---------_-__----- --------------------_________
1987 . . . . . . . . . . . . . . . . . ..*...............................
AREA COMPLAINTS PERCENT a. ___------------------- ----w---w- -------s
PRIMARY/SEPTIC DISFOSCIL 1 10%
SECONDARY 5 50% * 1 - RAS FLOW SIGNAL
DIGESTERS 0 0%
WASTE GAS BURNER 1 10% * 1 - BURNER FLAME
UNKOWN 3 30%
----a----- TOTAL ------w 10 100%
COMMENT: 20% OF COMPLCIINTS IN 1987 DUE TO MECHANICAL
FAILURES
1988 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...*.....
AREA COMPLAINT
---------------------- ------w-w
PERCENT
---w--w-
PRIMARY/SEPTIC DISPOSAL + 1 - DYE TEST CL2 OFF
SECONDdRY * 1 - TANK CHANGE OVER * 1 - RAS FLOW SIGNAL
Wb - CO-GEN SHUT DOWN
DIGESTERS a* 1 - GM VENT CONST. WORK
WASTE G&S BURNERS
UNKNOWN
5 30%
13 57%
1 4%
0 0%
2 9%
--------- -------- TOT& 23 100%
COMMENT : 43% OF COMFLAZNTS IN i9l3El DUE TO MECHANICAL
FAILURES
. ., . . C
Ref: X2.5125.7
PARKING CONSIDERATIONS
Currently, .thare are 42 parking spaces at the EWPCF. total of SO.5 employees. There are a However, due to shift scheduling, only a maximum of 38 employees are on site at any given time. 2010, the profected staffing by the department is: For the year
1. Administration 12 2. Resource Recovery 1 3. Technical Services 11 4. Operations and Maintenance Total 49 73
Again, because of shift scheduling, site would be 63. the maximum number of employees on
As part of on-going planning, the EWPCF is evaluating moving some administrative and technical functions to a building offsite. In this case8 the maximum number of employees on-site may be reduced to 46. Until this move is finalized, we propose adding as an interim measure 20 on-site parking places south of the existing Operations Building. If the administrative functions are not moved offsite, an expansion to the existing Operations Building will be required. Parking would be addressed again at that time.
We hope that this helps clarify the intent and details of the proposed Phase IV expansion. To enable you to more easily visuallze the existing facilities and proposed expansion, we would like to invite
you, your staff, and members of the Planning Commission to tour the plant. This invitation is partly in response to a suggestion by mem- bers of the Commission during their September 21, 1988 meeting. If you are interested in scheduling a tour or if you need additional information, please call Ms. Betty Meyer at (6191438-3941.
Very truly yoursI
~Ir2-??zYf Richard W. Graf General Manage/
ELM:RWG:kw Attachments
pc: Lloyd Hubbs Betty Meyer Dennis Wood
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ENCINA WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas, Carlsbad, CA 92009-0171 (619) 438-3941
mrm# NlWh
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CASE No: PDP l(C)
l@PLKNW: bhaWaterpOllutionQmtro1 Facility
m ANDIfkATI~: PreciseIkvelapnent Plan for the FbaseIVexpansion ofthe~ina~~~~ution~lFacilitYat62OOAvenida~~.
lEGALDEXRIXT~:AportionofSection20ofTBmship 12 South,Ranqe4 lEGALDEXRIXT~:AportionofSection20ofTBmship 12 South,Ranqe4 * * west, San Bernardurn west, San Bernardurn Meridian, acmHi.nq to the U.S. Govemment survey Meridian, acmHi.nq to the U.S. Govemment survey amxovedoctober 25, 1875 ami a portim of Lot T?' of AquaHedionJa according amxovedoctober 25, 1875 ami a portim of Lot T?' of AquaHedionJa according to Map 823, filed Ncvember 16, 1896. to Map 823, filed Ncvember 16, 1896. AFN: 214-010-8, 2110030-6,8 AFN: 214-010-8, 2110030-6,8
25.5 25.5 l?qmsed No. of L&s/Units l?qmsed No. of L&s/Units N/A N/A
LanlUseDesignaticn U-Public Utility
BnsityAlloweC- DensityPmpcsed -
Msti.rqZons P-u, PublicUtility PlLupedzone -
. ~ZoningandLandUse:
zaliD3 Land
Site z
North M Ir&stria.l/office
PM/O Vacant
c6.O&RwP .VacantLand, SolemrMabileHaaeFwk
ScboolDistrict Carlsbd Water Carl&ad Sewer carlsbad
Exn's - Exewb PublicFacilitiesFeeJgmemnt, Date
Nqative Declaration, issued s
E.I.R. Certified, dated
Other, Prior Ccmmliance, Ncmmber 12, 1988
*. .., * _ -NOTICE OF PUBLIC HEARING -
PDP l(C)
NOTICE IS HEREBY GIVEN that the City Council of the City of Carlsbad will hold a public
hearing at the City Council Chambers, 1200 Elm Avenue, Carlsbad, California, at 6:00 P.M., on Tuesday, April 18, 1989, to consider a Precise Development Plan Amendment for the
Phase IV expansion of the Encina Water Pollution Control Facility on property generally
located at 6200 Avenida Encinas in the P-U Zone within Local Facilities Management Zone 3.
If you have any questions, please call the Planning Department at 438-1161.
If you challenge the Precise Development Plan Amendment in court, you may be limited to
raising only those issues you or someone else raised at the public hearing described in
this notice or in written correspondence delivered to the City of Carlsbad City Clerk's
Office at or prior to the public hearing.
APPLICANT: Encina Administrative Agency
PUBLISH: April 7, 1989 Carlsbad City Council
I ENCINA PHASE IV EXPANSION ‘PDP-l(C)!
-
(Form A)
TO: CITY CLERK’S OFFICE
FROM: Planning Department
RE: PUBLIC HEARING REQUEST
Attached are the materials necessary for you to notice
PDP-l(C) ENCINA WATER POLLUTION CONTROL FACILITY
for a public hearing before the City Council.
Please notice the item for the council meeting of
.
Thank you.
Assistant City Man--
3129189
Date
--
ENCINA WATER POLLUTION CONTROL FACILITY
(211-030-06 & 08; 214-101-08)
LIST OF PROPERTY OWNERS
WITHIN A 600 FOOT RADIUS
CITY OF CARLSBAD PRECISE DEVELOPMENT PLAN
Assessor's
Parcel No.
211-030-25
Property Owner
M&in Corp.
6102 Avenida Encinas, Ste. B
Carlsbad, CA 92008
211-030-30
211-030-31
211-030-32
211-040-17
211-040-18
211-040-20
211-040-21
211-040-24
Alva Wilson
109 Emerald Bay
Laguna Beach, CA 92651
William Cagney
c/o Robert Jones, CPA
6777 Hollywood Blvd., Ste. 201
Los Angeles, CA 90029
N.V. Fermoni
c/o John Burnham and Co.
P.O. Box 2910
San Diego, CA 92112
Carlsbad Executive Co.
c/o Western Bankers Investment Corp.
8380 Miramar Rd., #200
San Diego, CA 92126
Carlsbad Executive Co.
c/o Western Bankers Investment Corp.
8380 Miramar Rd. #200
San Diego, CA 92126
S.un Pacific Inc.
P.O. Box 6189
San Diego, CA 92106
Paul Hadley
4743 W. Hoffer Street
Bann ing, CA 92220
Paul Hadley
4743 II. Hoffer Street
Bann ing, CA 92220
NOTICE OF PUBLIC HEARING
NOTICE IS HEREBY GIVEN that the Planning Commission of the City of Carlsbad will
hold a public hearing at the Council Chambers, 1200 Elm Avenue, Carlsbad,
California, at 6:00 p.m. on Wednesday, March 15, 1989, to consider approval of
a Precise Development Plan Amendment for the Phase IV expansion of the Encina
Water Pollution Control Facility on property generally located at 6200 Avenida
Encinas in the P-U Zone within Local Facilities Management Zone 3.
Those persons wishing to speak on this proposal are cordially invited to attend
the public hearing. If you have any questions, please call the Planning
Department at 438-1161.
If you challenge the Precise Development Plan Amendment in court, you may be
limited to raising only those issues you or someone else raised at the public
hearing described in this notice or in written correspondence delivered to the
City of Carlsbad at or prior to the public hearing.
CASE FILE: PDP l(C)
APPLICANT: ENCINA ADMINISTRATIVE AGENCY
PUBLISH: MARCH 3, 1989
CITY OF CARLSBAD PLANNI,NG COMMISSION
-.
Assessor's
Parcel No.
211-040-25
211-040-26
211-040-27
211-040-29
211-050-04
214-010-01
214-010-03
214-010-09
214-021-01
214-022-01
214-022-02
LIST OF PROPERTY OWNERS (Cont'd) WITHIN A 600 FOOT RADIUS
CITY OF CARLSBAD PRECISE DEVELOPMENT PLAN
Property Owner
OH0 Rose
18832 Winnwood Lane
Santa Ana, CA 92705
Paul Hadley
4743 W. Hoffer Street
Banning, CA 92220
Allstar Inns Operating L.P.
2020 De La Vira Street
Santa Barbara, CA 93130
Richard Williams
P.O. Box 177
San Luis Rey, CA 92068
James Gaiser
3340 Ridgecrest Drive
Carlsbad, CA 92008
Sea Pointe Professional Center Ltd.
1667 S. Mission Road, Ste. C
Fallbrook, CA 92028
William Head, James Brown, Jocoba Dikkentman
c/o Ramon Asedo
P.O. Box 207
Oceanside, CA 92054
Sammis Carlsbad Assoc.
17922 Fitch Ave.
Irvine, CA 92714
John Backman
13000 Brentwood Terrace
Los Angeles, CA 90049
Richard Donahue
4964 David Way
San Bernardino, CA 92404
James Wood
736 Avocado Street
De1 Mar, CA 92014
.-_ a*- --
Assessor's
Parcel No.
214-022-18
214-022-23
214-023-01
214-031-12
214-033-01
214-034-01
214-035-01
214-051-01
214-052-01
214-053-02
214-241-87
LIST OF PROPERTY OWNERS (Cont'd) WITHIN A 600 FOOT RADIUS
CITY OF CARLSBAD PRECISE DEVELOPMENT PLAN
Property Owner
Leslie Devlin
2524 North E Street
San Bernardino, CA 92405
Guy Ward
1901 Ave. of the Stars, Ste. 1475
Los Angeles, CA 90067
(From map: Por. Par. 2 SBE map 804-37-96
Santa Fe RR Co.)
Sammis Carlsbad Assoc.
17922 Fitch Ave.
Irvine, CA 92714
Sammis Carlsbad Assoc.
17922 Fitch Ave.
Irvine, CA 92714
Sammis Carlsbad Assoc.
17922 Fitch Ave.
Irvine, CA 92714
Sammis Carlsbad Assoc.
17922 Fitch Ave.
Irvine, CA 92714
Sammis Carlsbad Assoc.
17922 Fitch Ave.
Irvine, CA 92714
Sammis Carlsbad Assoc.
17922 Fitch Ave.
Irvine, CA 92714
Sammis Carlsbad Assoc.
17922 Fitch'Ave.
Irvine, CA 92714
Altamira rlanagement Assn. No. 1
2032 Garnet Street
San Diego, CA 92109