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Home My WebLink AboutCDP 98-61; BMP Retrofit Pilot Program; Coastal Development Permit (CDP)COASTAL PERMIT DETERMINATION FORM (TO BE COMPLETED BY PLANNING STAFF) This form is used to identify and record those projects which either require a Coastal Development Permit or which are exempt from the requirement for a Coastal Development Permit. Note: This is not a building permit, or a determination under the California Environmental Quality Act. COASTAL PERMIT DETERMINATION NUMBER: ASSESSOR'S PARCEL NUMBER: All _ z?'nA"ONAME: OUTm.»a5- p>IY\r ADDRESS: LOCATION OF PROJECT (IF DIFFERENT FROM ABOVE): A/Vt/ PROJECT DESCRIPTION:ff^ k&£(r\ "A ra-rt*. COASTAL PERMIT DETERMINATION: 1. This development is exempt from the requirement for a coastal permit. 2. This development requires a coastal development permit from the City of Carlsbad. 3. This development is in the State of California Coastal Commission are of jurisdiction. This determination relates only to the project described above and shown on the attached plans. Any change to the project may change the determination status. If the information contained in this submittal (including plans) is changed, found to be incorrect, or incomplete this determination shall be invalid. c: Applicant, Project File, Building Permit File (when applicable) H:\ADMIN\COUNTER\DETERMINATION FORM (CDP) O CITV OF CARLSBAD I i>»m <i0e nt*ificiAI A am i«~i 1 ) APPLICATIONS APPLIED FOR: (C Q AdmJnistrarti've Pennii - 2nd Dwelling Unit Q Administrative Variance X Coastal Development Permit n Conditional Ute Permit Q Condominium Permit Q Environmental Impact Assessment Q General Plan Amendment Q Hillside Development Permit Q Local Coastal Plan Amendment Q Master Plan Q Non-Residential Planned Development O Planned Development Permit HECK BOXES) (FOROEPAKIMtNT USE ONtYl <ft-t>l Q Planned Industrial Permit n Planning Commission Oftterminatiort Q Precise Development Plan Q Redevelopment Permit £] Site Development Plan D Special Use Permit Q Specific Plan Q Tentative Parcel Mop Obtain from Engineering Department Q Tentative Tract Map Q Variance Q Zone Change Q Ust other appfications not specified 1 (ft)* DEPARTMENT USf ONLY) 2) 31 4) ASSESSOR PARCEL NO(S),: PROJECT NAME:BMP Retrofit Pilot Program BRIEF DESCRIPTION OF PROJECT: Infiltration Basin at 1-5 and La Costa Avenge Bl 0\A/MER WAME (Print or Type) California Department of Transportation MAILING ADDRESSEnvironmental Program 1 120 TSl" Street (Mail Station 27) CITY AND STATE ZIP TELEPHONE Sacramento, CA ' • 94274 916/853-7386 I CERTIFY TM&T I AM THE 1 F6AL OWNER AND THAT ALL THE ABOVE INFORMATION IS TRUE AND CORRECT TO THE BIST OP MV KNOWLEDGE. ^^ /iffcedl^ &/*>/& SIGNATURE "IT ^rWc-A ^^.^ DATE ' 81 APPLICANT NAME (Print Of Type) Robert Boin, William Frost & Associates MAILING ADDRESS 14725 Afton.Parkway CITY AND STATE ZIP TELEPHONE Irvine, CA 92618 949/B55-5718 1 CERTIFY THAT I AM THE LCGAL rtEPRESgNTATIVE OF THE OWNER AND THAT ALL TuC ABOVE INFORMATION B TRUE AMD CORBECT TO THE BEST Of MV KNOVWUOOB. ~<^ ^L^L $koh£ SIGMATURE "Trev//' -^* /?1 DATE 77} ' BRIEF LEGAL DESCRIPTION NOTE: A PROPOSED PftOjfiCT REQUIRING MULTIPLE APPLICATIONS BE FILED. MUST as SUBMrrreo pfflOVl TO 9&O P.M- A PROPOSED PROJECT REQUIRING ONLV ONE APPLICATION BE FK.ED, MUST 86 SUWWTTBJ PRIOR TO 4:00 P.M. Porm 16 AUG-20-1998 10'-59 +714 837 4122 PAGE 1 0* 2 P.0G 8i LOCATION or PROJECT: ^Atest of )-S southbound off-ramp at ON THE Wott STflEETAQi SIDE OF Avenue 1-5 (NORTM. SOUTH. EAST. WEST) BETWEEN La Costa (NAME OF STRfcETI AND Poinsattia Lane 0} LOCAL FACILITIES MANAGEMENT ZONE 10) PROPOSED NUMBER OF LOTS 13} TYPfi OF SUBDIVISION 161 PERCENTAGE OF PROPOSED PROJECT IN OPEN SPACE IS) GROSS SITE ACREAGE 22) EXISTING ZONING 11} NUMBER OF EXISTING RESIDENTIAL UNITS 14) PROPOSED >ND OFFICE/ SQUARE FOOTAGE 17} PROPOSED INCREASE IN AOT 201 EXISTING PLAN 23) PROPOSED ZONING (NAME OF STRCCTl 121 PROPOSED NUMHEn OF RESIDENTIAL UNITS 15} PROPOSED COMM SQUARE FOOTAGE 18} PROPOSED SEWER USAGE IN EDU 21) PROPOSED GENERAL PLAN DESIGNATION 24)IN THE PROCESS Of REVIEWING THIS APPLICATION IT MAY BE NECESSARY FOR MEMBERS OF CITY STAFF. PLANNING COMMISSIONERS, DESIGN REVIEW BOARD MEMEBERS OR CITY COUNCIL MEMBERS TO INSPECTED ENTER THE PROPERTY THAT IS THE SUBJECT OF THIS APPLICATION. I/WE CONSENT TO ENTRX50R THIS PURPOSE SIGNATURE USE iFOR CITY USE ONLY FEE COMPUTATION APPLICATION TYPE RECEIVED FEE REQUIRED COP 96 -if TAL FEE REQUIRED ivn f</0 I AUG 2 5 1998 CITY OF CARLSBAD PLANNING DEP7 DATS STAMP APPLICATION RECEIVED DATE FEE PAID RECEIPT NO. Form flUG-20-1990 10=59 +714 837 4122 975: PAGE 2 OP 2 P.07 ACCOUNT NO.DESCRIPTION AMOUNT 'f* , 06/25/9B /,1 CHWT -00 LESS VALIDATED BY ROBERT BEIN, WILLIAM FROST & ASSOCIATES PROFESSIONAL ENGINEERS, PLANNERS & SURVEYORS August 14, 1998 JN34218 Mr. Michael Holzmiller, Planning Director CITY OF CARLSBAD Community Development Services 2075 Las Palmas Drive Carlsbad, CA 92009 Subject: Request for Coastal Development Permit Exemption Regarding Proposed Best Management Practices to be Deployed Within Existing Caltrans Right-of-Way (Additional Information) Dear Mr. Holzmiller: I would like to provide you with additional materials regarding the BMP projects. The BMP foot prints have been placed on the attached aerial photographs to provide you with a better image of where these sites are in relation to other Caltrans facilities. Should you or your staff have any questions after reviewing this letter and attached material, please do not hesitate to contact me at (949) 855-5718. Sincerely, Trevor Smith Associate Grp 13/pdata/34123/let-01 a.doc PC: Yulya Davidova, Caltrans D11 Rich Mallen, Caltrans Dl 1 Bill Whitenburg, RBF Scott Taylor, RBF Attachments Professional Service Since 1944 14725 ALTON PARKWAY, IRVINE, CA 92618-2069 • P.O. BOX 57057. IRVINE, CA 92619-7057 • 949.472.3505 • FAX 949.472.8373 OFFICES LOCATED THROUGHOUT CALIFORNIA, ARIZONA AND NEVADA • WEB SITE: www.rbf.com ROBERT BEIN, WILLIAM FROST & ASSOCIATES PROFESSIONAL ENGINEERS, PLANNERS & SURVEYORS August 6, 1998 JN34218 Mr. Michael Holzmiller, Planning Director CITY OF CARLSBAD Community Development Services 2075 Las Palmas Drive Carlsbad, CA 92009 Subject: Request for Coastal Development Permit Exemption Regarding Proposed Best Management Practices to be Deployed Within Existing Caltrans Right-of-Way Dear Mr. Holzmiller: As a result of litigation between Caltrans, the National Resources Defense Council (NRDC), the U.S. EPA and the San Diego Baykeeper, as additional Plaintiffs, a Consent Decree in District 11 (San Diego) was reached outlining the development of a Best Management Practice (BMP) Retrofit Pilot Program. The BMP Retrofit Pilot Program includes the design, construction and monitoring of BMP pilot projects within the urbanized areas of San Diego County. The types of proposed BMP pilot projects within the District include extended detention basins, infiltration basins, biofiltration strips/swales, a wet basin, trapping catch basins, catch basin inserts, multi-chambered treatment train (MCTT), infiltration trenches, biofilters, oil/water separator and media filter. Three types of these BMPs (infiltration trench, infiltration basin, and media filter) will be located within Caltrans right-of-way at four locations within the City of Carlsbad. These four locations fall under the jurisdiction of your Local Coastal Plan. Based on conversations with your staff, Caltrans would like to seek, if possible, a waiver (or exemption) to the requirements associated with a Coastal Development Permit. Please note that Caltrans has determined that these four sites are categorically exempt (Class 1, Section 15301(c) of the State CEQA Guidelines). For your information I have attached information on each of the four project sites that your staff has requested. Professional Service Since 1944 14725 ALTON PARKWAY, IRVINE, CA 92618-2069 • P.O. BOX 57057, IRVINE, CA 92619-7057 • 949.472,3505 • FAX 949.472.8373 OFFICES LOCATED THROUGHOUT CALIFORNIA, ARIZONA AND NEVADA • WEB SITE: www.rbf.com,^,™_ ^ ^ Mr. Michael Holzmiller Page 2 August 6, 1998 As a result of the litigation we are under an extremely tight schedule and would greatly appreciate anything you can do to make this project a high priority among your staff. We can come to your office to discuss this project in person if that would help to expedite the process. Should you or your staff have any questions after reviewing this letter and attached material, please do not hesitate to contact me at (949) 855-5718. Sincerely, Trevor Smith Associate Grp 13/pdata/34123/iet-OO 1 .doc PC: Yulya Davidova, Caltrans D11 Rich Mallen, Caltrans Dl 1 Bill Whitenburg, RBF Scott Taylor, RBF Attachments c oMr. Michael Holzmiller Page 3 August 6, 1998 ATTACHMENT A Infiltration Trench: Carlsbad Caltrans Maintenance Station Project Estimated Cost: $116,000 Referred to as Site #3 in the Overall Study Project Location: The Carlsbad Maintenance Station is located in the City of Carlsbad, one block south of Palomar Airport Road at 6050 Paseo Del Norte. The site is bounded by Paseo Del Norte to the west and commercial and industrial uses to the south, east and north. Project Description: The site includes a vehicle maintenance shop, fueling island, wash rack and storage areas for maintenance equipment and supplies. Site drainage is sheet flow to concrete swales and gutters, concentrating along a gutter in the entrance drive to the station and ultimately discharging to Paseo Del Norte. An infiltration trench and biofiltration filter strip will be installed along the southern boundary of the site (refer to the attached Preliminary Concept Map). Inflow monitoring, infiltration trench outflow monitoring and biofiltration outflow monitoring will be provided using automated equipment. The tributary areas for the infiltration trench and the bio-filter strip are 1.72 acres and 0.66 acres, respectively. The design storm runoff of approximately 1.60 for the infiltration trench is conveyed by the proposed concrete swale and routed through the BMP trench. The infiltration trench BMP is sized to contain the total design storm volume of 83.3m3. The existing concrete gutter, AC paving and AC berm will be removed in the southern portion of the maintenance yard, east of the entrance road. An existing AC structural section will be removed and reconstructed in this area as well. A type A2 curb and gutter will be installed along the existing landscaped hump west of the proposed BMPs. A concrete gutter with a level spreader and a root barrier will be installed adjacent to an existing palm tree west of and adjacent to the proposed BMPs. Runoff will be directed in a southwest direction across the project site to the biofiltration filter strip and infiltration trench, where it will be processed and discharged into a permanent overflow channel and out to Paseo Del Norte. The site proposed for installation of the BMPs is currently paved. Infiltration Trench (Biofiltration Swale): Interstate 5 South/Palomar Airport Road Project Estimated Cost: $64,000 Referred to as Site #4 in the Overall Study Project Location: The project site is located along the 1-5 southbound shoulder, north of the southbound I-5/Palomar Airport Road offramp. The proposed location for the biofiltration swale is along the area of Caltrans right-of-way parallel to the 1-5 freeway shoulder. Mr. Michael Holzmiller Page 4 August 6, 1998 Project Description: The area contains a longitudinal slope of approximately 1 to 2 percent and a cross slope of 2 percent. The site receives approximately 2.32 acres (0.92 hectares) of runoff from the 1-5 southbound mainline. The site currently consists of a 30- foot shoulder, which drains freeway runoff via sheet flow to an adjacent frontage road storm drain. A biofiltration swale will be installed along a portion of the shoulder (refer to the attached plan). The biofilter swale will be a trapezoidal-shaped channel with 2:1 side slopes. The channel will be lined with grass using a hydroseed mix. Outflow monitoring will be provided at both ends of the swale. A 450 millimeter outflow pipe will be installed at the southern end of the swale. A 2-meter-wide by 0.15-meter-deep AC north of the biofiltration swale will be provided to direct runoff to the swale. Excavating during construction may include brushing existing vegetation and minimal excavating. Shallow groundwater should not be a problem during construction. Since the proposed BMP site is located adjacent to Interstate 5, the bio-filter swale was designed in such a manner that it will not pose any significant hazard to the driving public. The site is characterized by non-native eucalyptus trees, grasses, and small plants, none of which appear to be unique or of significant habitat value. Infiltration Basin: Interstate 5/La Costa Boulevard Project Estimated Cost: $242,000 Referred to as Site #6 in the Overall Study Project Location: The proposal site is located along the shoulder of the 1-5 southbound offramp at La Costa Avenue, in the City of Carlsbad. The site is located in a basin south of the Batiquitos Lagoon. The site is bounded by a gas station to the south, a hillside residential area to the west, Batiquitos Lagoon to the north, and southbound 1-5 and the southbound 1-5 offramp to La Costa Avenue to the east. Project Description: The site receives approximately 5.5 acres (2.2 hectares) of drainage area from 1-5, the southbound offramp at La Costa Boulevard and some adjacent slope areas. Drainage flows from the 1-5 southbound to an existing overside drainage inlet. Runoff from the offramp also flows through this overside drain. An earthern swale will be constructed to direct runoff flows to the proposed infiltration basin. The basin was designed as an offline facility to capture the tributary watershed for water quality purposes. The rim of the basin has been set at the 1-year, 24-hour storage elevation. Ground stabilization will be provided on the grassy area south of the proposed infiltration basin. The infiltration basin will include a concrete headwall with RSP (refer to attached plan). A maintenance access road will be constructed between the southbound 1-5 offramp and infiltration basin. Discharge from the basin at high flows will exit into an existing open channel to the shore of the Batiquitos Lagoon. The southern portion of the site is characterized by several grasses, brush, and scattered palm and eucalyptus trees, none of which appear to be unique or of significant habitat value. JNE (a biological consultant) and RBF determined the presence of wetlands areas north of the proposed infiltration basin and southwest of and adjacent to the existing start Mr. Michael Holzmiller PageS August 6, 1998 of the 1-5 southbound off-ramp at La Costa Avenue. The proposed improvements will not impact these areas. Media Filter: La Costa Park and Ride Project Estimated Cost: $133,000 Referred to as Site #9 in the Overall Study Project Location: The La Costa Park and Ride is located just east of southbound 1-5 and south of La Costa Avenue in the City of Carlsbad. The facility is located in a grassy area by an existing catch basin. Project Description: The project consists of a media sand filter structure located within the La Costa Park and Ride area (refer to the attached plan). The facility is located in a grassy area along an approximately 15 foot (4.6 meter) high, 2:1 horizontal to vertical slope adjacent to Batiquitos Lagoon and by an existing catch basin. This site is on a possible fill brought up to grade to construct the parking area. Approximately 2.78 acres of paved area drains into the proposed facility. The total design flow for the 1-year storm event is 2.3 cfs. In order to avoid construction within the Batiquitos Lagoon, an inlet channel was designed to intercept and convey the design storm flows. Storm flows greater than the 10 year storm event will flow into the proposed overflow channel and will be discharged into the existing drainage culvert. In order to provide positive drainage towards the proposed inlet channel, pavement reconstruction will be performed immediately adjacent to the media sand filter site. Storm water samples will be taken using automated equipment at both the inflow and outflow points of the facility. During construction, there will be minimal excavating. Excavating is expected to consist of brushing existing vegetation and excavating a small pit. Shallow ground water is not anticipated to be a problem during construction. The project will require the removal of three existing non-native trees. iiliiilililiiiflllfiliiililllllliilill SOUTH PARKING DESCRIPTION: Park along the shoulder of the 1-5 southbound/ La Costa Avenue off-ramp. Parking should be in conformance with provisions outlined within Chapter 5 of the Caltrans Traffic Manual. The area can be accessed from the 1-5 southbound off-ramp. CARLSBAD STATE BEACH LOCATION DESCRIPTION: The site is located along the shoulder of the 1-5 southbound off-ramp at La Costa Avenue, in the City of Leucadia. The infiltration basin site is located in a basin south of the Batiquitos Lagoon. The site is bounded by a gas station to the south, a hillside residential area to the west, Bastquitos Lagoon to the north, and southbound 1-5 and the southbound 1-5 off-ramp to La Costa Drive to the east. O BMP Pilot Site Not to Scale SOURCE: Thomas Bros., San Diego County, 1997 CALIFORNIA DEPARTMENT OF TRANSPORTATION 1-5/La Costa Boulevard (west) BMP Pilot Study Site #6 ui,eWilliam 6/98 JN3461B < ^Q DO uzUJ CEUJX <rxu N[l 1CFOR COMPLETE R/W AND\ 1CURATEACCESS DATA, SEE R/W RECORD MAPSAT DISTRICT OFFICE ALL DIMENS IjS ARE IN METERS UNLESS OTHERWISE SHOWN efric I ~ i KILOMETER POST JSHEETI rotAt:OUNTY | ROUTE | TOTAL PROJECT '---•- ROBERT BEIN, WILLIAM FROST i ASSOCIATES 14725 ALTON PARKWAY IRVINE. CA 92618 The Stale of California or Its officers or agents shall not t» responsible far the accuracy or completeness of electronic copies of this all" sfwf. R/W BATIOUITOS LAGOON 600mm RCP( j 600mm RCP EXIST 450mm CSP nT)600nm RCP 600mm RCP 600mm RCP(o ROUTE 5 EXIST 200mm CSP <§> 'So ''*». DISTRICT 11 SITE #6 PROPOSED BMP LOCATION r r ri, p f i i f* i > r * o muo 8 f *I A Cf • * UJX r CoL-LEFOR CdfoflETE R/W AND ACCURATE ACCESS DATA, SEE R/W RECORD MAPS AT DISTRICT OFFICE ALL DIMS fONS ARE IN METERS UNLESS OTHERWISE SHOWN etric ROBERT BEIN, WILLIAM FROST & ASSOCIATES N725 ALTON PARKWAY IRVINE. CA 92618 The Stale of California or Its of fleers or agents stall not be responsiblefor the occyrocx or completeness of electronic copies of this plan sfeet. EARTH SWALE CRADE-TO-DRAIN ROUTE 5 DISTRICT 11 SITE #6 PROPOSED BMP LOCATION