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C15-0009-WQMP-Report_2019-09-16 (Adams Streeter)
15 Corporate Park | Irvine, CA 92606 | 949-474-2330 Preliminary Water Quality Management Plan Report: Project Name: Bayside Family Resort Newport Beach CA Prepared for: Newport Bayside Resort, LLC 10250 Constellation Blvd. Suite 1750 Los Angeles, CA 90067 09.16.2019 Prepared by: Felix Gonzalez fgonzalez@adams-streeter.com Water Quality Management Plan (WQMP) Bayside Family Resort Owner’s Certification Project Owner’s Certification Permit/Application No. Pending Grading Permit No. Pending Tract/Parcel Map No. Building Permit No. Pending CUP, SUP, and/or APN (Specify Lot Numbers if Portions of Tract) APN 988-13-243 This Water Quality Management Plan (WQMP) has been prepared for Newport Bayside Resort LLC by Adams-Streeter Civil Engineers. The WQMP is intended to comply with the requirements of the local NPDES Stormwater Program requiring the preparation of the plan. The undersigned, while it holds a long-term lease the subject property, is responsible for the implementation of the provisions of this plan and will ensure that this plan is amended as appropriate to reflect up-to-date conditions on the site consistent with the current Orange County Drainage Area Management Plan (DAMP) and the intent of the non-point source NPDES Permit for Waste Discharge Requirements for the County of Orange, Orange County Flood Control District and the incorporated Cities of Orange County within the Santa Ana Region or. Once the undersigned transfers its interest in the property, its successors-in-interest shall bear the aforementioned responsibility to implement and amend the WQMP. An appropriate number of approved and signed copies of this document shall be available on the subject site in perpetuity. Master Lessee: Title Victor Nonato Company Newport Bayside Resort, LLC Address 10250 Constellation Blvd. Suite 1750, Los Angeles, CA 90067 Email vnonato@urban-commons.com Telephone # 213.784.5941 Signature Date Water Quality Management Plan (WQMP) Bayside Family Resort Owner’s Certification Contents Page No. SECTION I DISCRETIONARY PERMIT(S) AND WATER QUALITY CONDITIONS .......... 3 SECTION II PROJECT DESCRIPTION ............................................................................ 4 SECTION III SITE DESCRIPTION................................................................................... 9 SECTION IV BEST MANAGEMENT PRACTICES (BMPS) ................................................ 11 SECTION V INSPECTION/MAINTENANCE RESPONSIBILITY FOR BMPS ................... 24 SECTION VI SITE PLAN AND DRAINAGE PLAN ........................................................... 28 SECTION VII EDUCATIONAL MATERIALS ..................................................................... 29 Attachments Attachment A . ............................................................................................. BMP Site Plan Attachment B . ........................................................................................BMP Calculations Attachment C . ............................................................ Orange County Rainfall Zones Map Attachment D . ............................................................................................... Soils Exhibit Attachment E . ................................................................................. Educational Materials Water Quality Management Plan (WQMP) Bayside Family Resort Section I Page 3 Section I Discretionary Permit(s) and Water Quality Conditions Project Infomation Permit/Application No. Pending Tract/Parcel Map No. Pending Additional Information/ Comments: Water Quality Conditions Water Quality Conditions (list verbatim) All significant redevelopment projects, where significant redevelopment is defined as the addition or replacement of 5,000 or more square feet of impervious surface on an already developed site. A project water quality management plan (WQMP) conforming to the current water discharge requirements permit for the county of orange (order no. R8- 2009-0030) (MS4 permit) prepared by a licensed civil engineer, shall be submitted to the department of public works for review and acceptance. The WQMP shall address section XII of the MS4 permit and all current surface water quality issues. The project WQMP shall include the permit and all current surface water quality issues Watershed-Based Plan Conditions Provide applicable conditions from watershed - based plans including WIHMPs and TMDLS. According to the Technical Guidance Document, a Watershed Infiltration and Hydromodification Management Plan (WIHMP) will be prepared for the Newport Bay (Upper Ecological Reserve) watershed and submitted to the County. According to the OC Watershed Program Effectiveness Assessment report, dated November, the Army Corps of Engineers is to prepare a comprehensive study that will be completed in 2-3 years. The current TMDLs listed for Newport Bay (Upper ecological reserve) are for, Sediment, Nutrients, Metals, Bacteria Indicators, Pesticides and DDT. Water Quality Management Plan (WQMP) Bayside Family Resort Section III Page 4 Section II Project Description II.1 Project Description Description of Proposed Project Development Category (Verbatim from WQMP): All significant redevelopment projects, where significant redevelopment is defined as the addition or replacement of 5,000 or more square feet of impervious surface on an already developed site. Project Area (ft2): 622,472 Number of Dwelling Units: ___________ SIC Code: 7011 Narrative Project Description: The project is located at the Newport Dunes on APN 988-13-243 at the end of Bayside Drive off of the Pacific Coast Highway. The Zoning Map for the City of Newport Beach shows that the site is located in the Special Purpose Zoning District as Planned Community, PC-48. The site is approximately 14.3 acres, under existing conditions, the site consists of a boat storage area and a dredging stockpile. An existing driveway, boat storage, and parking lot are located by the north and west boundaries of the property line. The west and south side of the project are bounded by an existing RV parking area. A stretch of the beach at Newport Dunes lagoon forms the easterly side of the site. The proposed improvements will include a new 275-room Family Inn resort with outdoor recreational areas along the east boundary by the Newport Dunes lagoon. The rest of the project site will be a parking lot to accommodate the guests. Development of the proposed resort will require grading of the existing boat storage parking and dredging stockpile area. Site improvements will include construction of new utility lines to serve the proposed building and parking lot and construction of other site improvements such as pavement, curb and gutter, water quality landscaping measures, hardscape and landscape. Project Area Pervious Impervious Area (acres or sq ft) Percentage Area (acres or sq ft) Percentage Pre-Project Conditions 8.07 acres 56% 6.22 acres 44% Water Quality Management Plan (WQMP) Bayside Family Resort Section III Page 5 Post-Project Conditions 5.21 acres 36% 9.08 acres 64% Drainage Patterns/Connections The existing site drainage is generally south to north with existing storm drain pipes and catch basins collecting the runoff and directing the flows to Newport Bay. Existing parking lot, vacant area and boat storage parking are generally flat with mild slopes of 0.5% to 1.0% and carry the surface runoff to low points whereby catch basins intercept and convey the flows to storm drain pipes. These flows are then conveyed via below grade storm drain pipes to Newport Bay. The dredging stockpile area varies in height from approximately 5’ below adjacent ground to approximately 15’ above adjacent ground with irregular piles within the area. Drainage from the stockpile area is mostly contained within the fenced area with the exception of outward facing slopes that drain to adjacent parking lots or the beach area. The proposed drainage is to mimic the existing patterns, which are generally south to north. The surface runoff will sheet flow to proposed catch basins and into storm drain pipes. Roof drains will be connected to the storm drain pipe along the new alignment which will eventually connect into the existing discharge points once associated with the existing parking lot. The stormwater runoff will outlet to the Newport Bay (Upper Ecological Reserve) and then ultimately into the Pacific Ocean. II.2 Potential Stormwater Pollutants Pollutants of Concern Pollutant Circle One: E=Expected to be of concern N=Not Expected to be of concern Additional Information and Comments Suspended-Solid/ Sediment E N Landscaping will exist. Nutrients E N Landscaping will exist. Heavy Metals E N Uncovered parking will exist Water Quality Management Plan (WQMP) Bayside Family Resort Section III Page 6 Pathogens (Bacteria/Virus) E N Restaurant within resort. Pesticides E N Landscaping will exist. Oil and Grease E N Vehicle traffic expected. Toxic Organic Compounds E N Trash and Debris E N Water Quality Management Plan (WQMP) Bayside Family Resort Section III Page 7 II.3 Hydrologic Conditions of Concern No – Show map Water Quality Management Plan (WQMP) Bayside Family Resort Section III Page 8 II.4 Post Development Drainage Characteristics The site is located in the Newport Bay watershed. Site storm water runoff drains directly into the Newport Bay (Upper Ecological Reserve). The proposed improvements include replacing existing concrete hardscape, modify existing planters and the addition of site amenities. The site’s hydrology pattern will remain unchanged and will continue to flow Southwest via sheet flow, v-gutter and storm drain lines. The new storm drain system will connect into an existing system which will ultimately discharge into the bay. II.5 Property Ownership/Management Newport Bayside Resort, LLC holds a lease for the project site. The project site is owned by the County of Orange. The county has entered into a master lease with Goldrich Kest, and Newport Bayside Resort LLC holds a sublease with Goldrich Kest for the project site. Newport Bayside Resort will be responsible for the ownership and maintenance of all proposed infrastructure and BMP’s. Water Quality Management Plan (WQMP) Bayside Family Resort Section III Page 9 Section III Site Description III.1 Physical Setting Planning Area/ Community Name Bayside Family Resort Location/Address 1131 Backbay Drive Newport Beach, CA 92660 Land Use Parks and Recreaction Zoning Planned Community-48 Acreage 14.29 Predominant Soil Type Soil Type D III.2 Site Characteristics Precipitation Zone 0.70 inch Design Capture Storm Depth (per TGD Figure XVI-1) Topography The existing site is generally flat by the vacant and parking area. The dredging stockpile area varies in height from approximately 5' below the groudn to approximately 15' above the adjacaent ground. Drainage Patterns/Connections The existing site drainage is generally south to north with existing storm drain pipes and catch basins collecting the runoff and directing the flows to Newport Bay Soil Type, Geology, and Infiltration Properties The projects soil is Type D, Type D soils have very low infiltration rate when thoroughly wetted Site Characteristics (continued) Water Quality Management Plan (WQMP) Bayside Family Resort Section III Page 10 Hydrogeologic (Groundwater) Conditions Ground water may be encountered at a depth of 10' (Per TGD Figure XVI-2d) Geotechnical Conditions (relevant to infiltration) N/A Off-Site Drainage There are no concern for offsite run on to the project. Utility and Infrastructure Information Based on the survey, there are existing storm drain lines that the proposed storm drain lines at the north side of the property are to be connected to. III.3 Watershed Description Receiving Waters Newport Bay, (Upper Ecological Reserve) 303(d) Listed Impairments Chlordane, Copper, DDT, Metals, Nutrients, PCBs, Pesticides, Sediment Toxicity, Sedimentation/Siltation Applicable TMDLs Sediment, Nutrients, Metals, Bacteria Indicators, Pesticides and DDT Pollutants of Concern for the Project Sediment, Nutrients, Heavy Metals, Bacteria, Pesticides, Oil and Grease, Toxic Organics, Trash and Debris Environmentally Sensitive and Special Biological Significant Areas The project is located adjacent to Newport Bay Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 11 Section IV Best Management Practices (BMPs) IV. 1 Project Performance Criteria (NOC Permit Area only) Is there an approved WIHMP or equivalent for the project area that includes more stringent LID feasibility criteria or if there are opportunities identified for implementing LID on regional or sub-regional basis? YES NO If yes, describe WIHMP feasibility criteria or regional/sub-regional LID opportunities. N/A Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 12 Project Performance Criteria (continued) If HCOC exists, list applicable hydromodification control performance criteria (Section 7.II-2.4.2.2 in MWQMP) N/A List applicable LID performance criteria (Section 7.II-2.4.3 from MWQMP) Priority Projects must infiltrate, harvest and re-use, evapotranspire, or bio treat/bio filter, the 85th percentile, 24- hour storm event (Design Capture Volume). A properly designed Bio treatment system may only be considered if infiltration harvest re-use and evapotranspiration (ET) cannot be feasibly implemented for the full design capture volume. In this case, infiltration, harvest re-use, and ET practices must be implemented to the greatest extent feasible and bio treatment may be provided for the remaining design capture volume. List applicable treatment control BMP performance criteria (Section 7.II-3.2.2 from MWQMP) Satisfaction of LID performance criteria also fully satisfies treatment control performance criteria. If it is not feasible to meet LID performance criteria through retention and/ or bio treatment provided on site or at a sub-regional scale, then treatment control of treatment control BMP’s shall be provided on site or offsite prior to discharge to waters of the US Calculate LID design storm capture volume for Project. DCV = design storm capture volume, cu-ft C = runoff coefficient = (0.75 × imp + 0.15) Imp = impervious fraction of drainage area (ranges from 0 to 1) d = storm depth (inches) A = tributary area (acres) Imp = 63% d = 0.7 inches A = 14.29 acres Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 13 DCV = (0.75 x 0.65 +0.15) x 0.7 inches x 14.29 ac x 43560 sf/ac x 1/12 in/ft = 23,148 ft Refer to Section IV.2 for specific Drainage Manage Area (DMA) breakdown and Attachment B for detailed calculations Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 14 IV.2 SITE DESIGN AND DRAINAGE PLAN The following section describes the site design BMPs used in this project and the methods used to incorporate them. Careful consideration of site design is a critical first step in storm water pollution prevention from new developments and redevelopments. Site Design BMPs Minimize Impervious Area Impervious surfaces have been minimized by incorporating landscaped areas throughout the site surrounding the proposed building. Landscaping will be provided throughout the site within the common areas as well as around the perimeter of the building. Maximize Natural Infiltration Capacity Infiltration is not recommended for the project site due to the high ground water and soil type D classification Preserve Existing Drainage Patterns and Time of Concentration Runoff from the site will continue to flow similar to existing conditions. Low-flows and first-flush runoff will drain to proprietary biotreatment systems for water quality treatment via bio-filtration. Disconnect Impervious Areas Landscaping will be provided adjacent to sidewalks and between the proposed buildings. Low-flows and first-flush runoff will drain to proprietary biotreatment systems for water quality treatment via bio-filtration.. Protect Existing Vegetation and Sensitive Areas, and Revegetate Disturbed Areas There are no existing vegetated or sensitive areas to preserve on the project site. All disturbed areas will either be paved or landscaped. Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 15 Drainage Management Areas: In accordance with the MS4 permit and the 2013 OC TGD, the project site has been divided into Drainage Management Areas (DMAs) to be utilized for defining drainage areas and sizing LID and other treatment control BMPs. DMAs have been delineated based on the proposed site grading patterns, drainage patterns, storm drain and catch basin locations. The design capture volumes (DCV) and treatment flow rates (QDesign) for each DMA are summarized in the table below. These have been derived utilizing the “Simple Method” in accordance with the TGD Section III.1.2. Locations of DMAs and associated LID and treatment BMPs are identified on the exhibits in Section VI. Additional calculations and TGD Worksheets are provided in Attachment DRAINAGE MANAGEMENT AREAS DMA/Drainage Area ID Tributary Drainage Area (ac) % Imp. Estimated Tc Rainfall Intensity (in/hr) Runoff Coefficient C C= (0.75 x imp)+0.15 Q Design (CFS) Q= CIA DMA A 1.66 60 5 min 0.26 0.6 0.26 DMA B 1.66 55 5 min 0.26 0.56 0.24 DMA C 0.69 100 5 min 0.26 0.9 .16 DMA D 3.95 78.2 5 min 0.26 0.73 0.75 DMA E 0.43 23.3 5 min 0.26 0.32 0.03 DMA F 5.90 55.8 5 min 0.26 0.57 0.87 Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 16 IV.3 LID BMP SELECTION AND PROJECT CONFORMANCE ANALYSIS IV.3.1 Hydrologic Source Controls Name Included? Localized on-lot infiltration Impervious area dispersion (e.g. roof top disconnection) Street trees (canopy interception) Residential rain barrels (not actively managed) Green roofs/Brown roofs Blue roofs Impervious area reduction (e.g. permeable pavers, site design) Other: Other: Other: Other: Other: Other: Other: Other: Hydrologic source controls are not required as this project is exempt from hydromodification Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 17 IV.3.2 Infiltration BMPs Name Included? Bioretention without underdrains Rain gardens Porous landscaping Infiltration planters Retention swales Infiltration trenches Infiltration basins Drywells Subsurface infiltration galleries French drains Permeable asphalt Permeable concrete Permeable concrete pavers Other: Other: Infiltration BMPs are not feasible for this project due to the highwater table and type D soils found throughout the site. Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 18 IV.3.4 Biotreatment BMPs Name Included? Bioretention with underdrains Stormwater planter boxes with underdrains Rain gardens with underdrains Constructed wetlands Vegetated swales Vegetated filter strips Proprietary vegetated biotreatment systems Wet extended detention basin Dry extended detention basins Other: Other: Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 19 Since both infiltration and harvest and reuse are considered infeasible, biofiltration BMPs will be utilized on- site for water quality treatment. The project will implement three proprietary biotreatment systems ( to treat DMA areas A, B, C and F) and bioretention systems with underdrains ( to treat DMA areas D and E). These systems were selected based on their abilities to treat the project’s pollutants of concerns to a medium or high effectiveness, in accordance with Table 4.2 of the Technical Guidance Document. Proprietary Biotreatment: Modular Wetland Systems The systems will include the Modular Wetlands Systems developed by Bio Clean Environmental Services, Inc. There are several advantages of the Modular Wetland System over traditional bioretention planters including the following reasons: Modular Wetlands are the only proprietary biotreatment devices specifically designed for higher flow through treatment rates which reduce the potential for nutrient and copper leaching under more stagnant conditions (a common occurrence with planters that are left unmaintained). Modular Wetlands by Modular Wetlands Systems, Inc. are proprietary biotreatment systems that utilize multi-stage treatment processes including screening media filtration, settling, and biofiltration. The pre-treatment chamber contains the first three stages of treatment, and includes a catch basin inlet filter to capture trash, debris, gross solids and sediments, a settling chamber for separating out larger solids, and a media filter cartridge for capturing fine TSS, metals, nutrients, and bacteria. Runoff then flows through the wetland chamber where treatment is achieved through a variety of physical, chemical, and biological processes. As storm water passes down through the planting soil, pollutants are filtered, adsorbed, biodegraded and sequestered by the soil and plants, functioning similar to bioretention systems. Proprietary Biotreatment: Modular Wetland System Design Summary DMA/Drainage Area ID Tributary Drainage Area (ac) Q Design (CFS) MWS Model/ Vault Size MWS Treatment Q (CFS) DMA A-B-C 4.01 0.66 MWS-L-8-24 0.69 DMA F 5.90 0.87 MWS-L8-24 & MWS-L8-8 0.69+0.23 = 0.92 In addition to the Modular Wetlands, bioretention planters with underdrains will be integrated into the parking lot islands, located in DMAs D and E. See section IV and attachent B “BMP Calculations” for sizing computations. Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 20 IV.3.8 Non-structural Source Control BMPs Non-Structural Source Control BMPs Identifier Name Check One If not applicable, state brief reason Included Not Applicable N1 Education for Property Owners, Tenants and Occupants N2 Activity Restrictions N3 Common Area Landscape Management N4 BMP Maintenance N5 Title 22 CCR Compliance (How development will comply) Not required onsite N6 Local Industrial Permit Compliance Does not pertain to site N7 Spill Contingency Plan No spill concern onsite N8 Underground Storage Tank Compliance Not present onsite N9 Hazardous Materials Disclosure Compliance Not present onsite N10 Uniform Fire Code Implementation N11 Common Area Litter Control N12 Employee Training N13 Housekeeping of Loading Docks N14 Common Area Catch Basin Inspection N15 Street Sweeping Private Streets and Parking Lots N16 Retail Gasoline Outlets Not present onsite Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 21 IV.3.9 Structural Source Control BMPs Structural Source Control BMPs Identifier Name Check One If not applicable, state brief reason Included Not Applicable S1 Provide storm drain system stenciling and signage S2 Design and construct outdoor material storage areas to reduce pollution introduction Outdoor storage is not anticipated S3 Design and construct trash and waste storage areas to reduce pollution introduction S4 Use efficient irrigation systems & landscape design, water conservation, smart controllers, and source control S5 Protect slopes and channels and provide energy dissipation No slopes anticipated onsite Incorporate requirements applicable to individual priority project categories (from SDRWQCB NPDES Permit) Project not located in SDRWQCB S6 Dock areas Not present onsite S7 Maintenance bays Not present onsite S8 Vehicle wash areas Not present onsite S9 Outdoor processing areas Not present onsite S10 Equipment wash areas Not present onsite S11 Fueling areas Not present onsite S12 Hillside landscaping Not present onsite S13 Wash water control for food preparation areas S14 Community car wash racks Not present onsite Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 22 IV.4 ALTERNATIVE COMPLIANCE PLAN (IF APPLICABLE) IV.4.1 Water Quality Credits Description of Proposed Project Project Types that Qualify for Water Quality Credits (Select all that apply): Redevelopment projects that reduce the overall impervious footprint of the project site. Brownfield redevelopment, meaning redevelopment, expansion, or reuse of real property which may be complicated by the presence or potential presence of hazardous substances, pollutants or contaminants, and which have the potential to contribute to adverse ground or surface WQ if not redeveloped. Higher density development projects which include two distinct categories (credits can only be taken for one category): those with more than seven units per acre of development (lower credit allowance); vertical density developments, for example, those with a Floor to Area Ratio (FAR) of 2 or those having more than 18 units per acre (greater credit allowance). Mixed use development, such as a combination of residential, commercial, industrial, office, institutional, or other land uses which incorporate design principles that can demonstrate environmental benefits that would not be realized through single use projects (e.g. reduced vehicle trip traffic with the potential to reduce sources of water or air pollution). Transit-oriented developments, such as a mixed use residential or commercial area designed to maximize access to public transportation; similar to above criterion, but where the development center is within one half mile of a mass transit center (e.g. bus, rail, light rail or commuter train station). Such projects would not be able to take credit for both categories, but may have greater credit assigned Redevelopment projects in an established historic district, historic preservation area, or similar significant city area including core City Center areas (to be defined through mapping). Developments with dedication of undeveloped portions to parks, preservation areas and other pervious uses. Developme nts in a city center area. Development s in historic districts or historic preservation areas. Live-work developments, a variety of developments designed to support residential and vocational needs together – similar to criteria to mixed use development; would not be able to take credit for both categories. In-fill projects, the conversion of empty lots and other underused spaces into more beneficially used spaces, such as residential or commercial areas. Calculation of Water Quality Credits (if applicable) Water Quality Management Plan (WQMP) Bayside Family Resort Section IV Page 23 IV.4.2 Alternative Compliance Plan Information Not Applicable Water Quality Management Plan (WQMP) Bayside Family Resort Section V Page 24 Section V Inspection/Maintenance Responsibility for BMPs BMP Inspection/Maintenance BMP Reponsible Party(s) Inspection/ Maintenance Activities Required Minimum Frequency of Activities Biofiltration Planters Owner Dead plants shall be removed and replaced as needed, planted area shall consist 2-4 inches of mulch and additional placement of 1”-2” should be added annually. Inspection shall occur every two weeks. Modular Wetlands Owner Typical maintenance includes removing trash & debris from the catch basin screening filter (by hand), removal of sediment and solids in the settlement chamber (vacuum truck), replacement of the BioMediaGREEN TM filter cartridge, and replacement of the BioMediaGREEN TM drain downfilter(if equipped). In addition, plants within the wetland chamber will require trimming as needed in conjunction with routine landscape maintenance activities. No fertilizer shall be used in this chamber. Wetland chamber should be inspected during rain events to verify flow through the system. If little to no flow is observed from the lower valve or Twice per year Water Quality Management Plan (WQMP) Bayside Family Resort Section V Page 25 orifice plate, the wetland media may require replacement. Education for Property Owners, Tenants and Occupants Owner Educational materials will be provided to tenants annually. Materials to be distributed are found in Appendix C. Tenants will be provided these materials by the Owner prior to occupancy and periodically thereafter Annually Activity Restrictions Owner The Owner will prescribe activity restrictions to protect surface water quality, through lease terms or other equally effective measure, for the property. Restrictions include, but are not limited to, prohibiting vehicle maintenance or vehicle washing. Ongoing Common Area Landscape Management Owner Maintenance shall be consistent with City requirements. Fertilizer and/or pesticide usage shall be consistent with County Management Guidelines for Use of Fertilizers (OC DAMP Section 5.5) as well as local requirements. Maintenance includes mowing, weeding, and debris removal on a weekly basis. Trimming, replanting, and replacement of mulch shall be performed on an as-needed basis to prevent exposure of erodible surfaces. Trimmings, Monthly Water Quality Management Plan (WQMP) Bayside Family Resort Section V Page 26 clippings, and other landscape wastes shall be properly disposed of in accordance with local regulations. Materials temporarily stockpiled during maintenance activities shall be placed away from water courses and storm drain inlets. Common Area Litter Control Owner Litter patrol and other litter control activities shall be performed on a weekly basis and in conjunction with routine maintenance activities. Weekly Employee Training Owner Educate all new employees/ managers on storm water pollution prevention, particularly good housekeeping practices, prior to the start of the rainy season (October 1). Refresher courses shall be conducted on an as needed basis. Annually Street Sweeping Private Streets and Parking Lots Owner Drive aisles & parking areas must be swept at least quarterly (every 3 months), including prior to the start of the rainy season (October 1). Quarterly Common Area Catch Basin Inspection Owner Catch basin inlets and other drainage facilities shall be inspected after each storm event and once per year. Inlets and other facilities shall be cleaned prior to the rainy season, by October 1 each year. Annually Water Quality Management Plan (WQMP) Bayside Family Resort Section V Page 27 Storm Drain Stencilling and Signage Owner Storm drain stencils shall be inspected for legibility, at minimum, once prior to the storm season, no later than October 1 each year. Those determined to be illegible will be re-stenciled as soon as possible. Annually Use efficient irrigation systems & landscape design, water conservation, smart controllers, and source control Owner In conjunction with routine maintenance activities, verify that landscape design continues to function properly by adjusting properly to eliminate overspray to hardscape areas, and to verify that irrigation timing and cycle lengths are adjusted in accordance with water demands, given time of year, weather, and day or night time temperatures. System testing shall occur twice per year. Water from testing/flushing shall be collected and properly disposed to the sewer system and shall not discharge to the storm drain system. Twice per year Water Quality Management Plan (WQMP) Bayside Family Resort Section VI Page 28 Section VI Site Plan and Drainage Plan VI.1 SITE PLAN AND DRAINAGE PLAN Refer to Attachment A Water Quality Management Plan (WQMP) Bayside Family Resort Section VII Page 29 Section VII Educational Materials Education Materials Residential Material (http://www.ocwatersheds.com) Check If Applicable Business Material (http://www.ocwatersheds.com) Check If Applicable The Ocean Begins at Your Front Door Tips for the Automotive Industry Tips for Car Wash Fund-raisers Tips for Using Concrete and Mortar Tips for the Home Mechanic Tips for the Food Service Industry Homeowners Guide for Sustainable Water Use Proper Maintenance Practices for Your Business Household Tips Other Material Check If Attached Proper Disposal of Household Hazardous Waste Recycle at Your Local Used Oil Collection Center (North County) Recycle at Your Local Used Oil Collection Center (Central County) Recycle at Your Local Used Oil Collection Center (South County) Tips for Maintaining a Septic Tank System Responsible Pest Control Sewer Spill Tips for the Home Improvement Projects Tips for Horse Care Tips for Landscaping and Gardening Tips for Pet Care Tips for Pool Maintenance Tips for Residential Pool, Landscape and Hardscape Drains Tips for Projects Using Paint ATTACHMENT A BMP SITE PLAN 13.644 UP RD RD RD R D R D RD RD R D R D RD R D RD RD RD RD X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X XXXX X X X X X X X X X X X X X X X X XXXXXXXXXXXXXX XXX XXX XXX XXXXXXXXXXXXXX XXX X X X X X X X X X X X X X X X X X 11.979 14.029 15 Corporate Park, Irvine, CA 92606 | 949.474.2330 | adams-streeter.com LEGEND SD DRAINAGE AREAS DRAINAGE AREA AREA (ACRE)TOTAL AREA (ACRE) PERVIOUS AREA (ACRE) TOTAL PERVIOUS AREA (ACRE) IMPERVIOUS AREA (ACRE) TOTAL IMPERVIOUS AREA (ACRE) % IMPERVIOUS (IMP. T.A .) TOTAL % IMPERVIOUS (IMP. T.A .) DMA-A 1.66 14.29 0.66 5.21 1.00 9.08 60.2 63.54 DMA-B 1.66 0.75 0.91 54.8 DMA-C 0.69 0.00 0.69 100.0 DMA-D 3.95 0.86 3.09 78.2 DMA-E 0.43 0.33 0.10 23.3 DMA-F 5.90 2.61 3.29 55.8 MWS Linear Advanced Stormwater Biofiltration Contents 1 Introduction 2 Applications 3 Configurations 4 Advantages 5 Operation 6 Orientations | Bypass 7 Performance | Approvals 8 Sizing 9 Installation | Maintenance | Plants www.ModularWetlands.com The Urban Impact For hundreds of years natural wetlands surrounding our shores have played an integral role as nature’s stormwater treatment system. But as our cities grow and develop, these natural wetlands have perished under countless roads, rooftops, and parking lots. Plant A Wetland Without natural wetlands our cities are deprived of water purification, flood control, and land stability. Modular Wetlands and the MWS Linear re-establish nature’s presence and rejuvenate water ways in urban areas. MWS Linear The Modular Wetland System Linear represents a pioneering breakthrough in stormwater technology as the only biofiltration system to utilize patented horizontal flow, allowing for a smaller footprint and higher treatment capacity. While most biofilters use little or no pre- treatment, the MWS Linear incorporates an advanced pre-treatment chamber that includes separation and pre-filter cartridges. In this chamber sediment and hydrocarbons are removed from runoff before it enters the biofiltration chamber, in turn reducing maintenance costs and improving performance. Parking Lots Parking lots are designed to maximize space and the MWS Linear’s 4 ft. standard planter width allows for easy integration into parking lot islands and other landscape medians. Mixed Use The MWS Linear can be installed as a raised planter to treat runoff from rooftops or patios, making it perfect for sustainable “live-work” spaces. Industrial Many states enforce strict regulations for discharges from industrial sites. The MWS Linear has helped various sites meet difficult EPA mandated effluent limits for dissolved metals and other pollutants. Residential Low to high density developments can benefit from the versatile design of the MWS Linear. The system can be used in both decentralized LID design and cost-effective end-of-the-line configurations. Streets Street applications can be challenging due to limited space. The MWS Linear is very adaptable, and offers the smallest footprint to work around the constraints of existing utilities on retrofit projects. Commercial Compared to bioretention systems, the MWS Linear can treat far more area in less space - meeting treatment and volume control requirements. Applications The MWS Linear has been successfully used on numerous new construction and retrofit projects. The system’s superior versatility makes it beneficial for a wide range of stormwater and waste water applications - treating rooftops, streetscapes, parking lots, and industrial sites. More applications are available on our website: www.ModularWetlands.com/Applications • Agriculture • Reuse • Low Impact Development • Waste Water www.ModularWetlands.com | Page 3 Configurations The MWS Linear is the preferred biofiltration system of Civil Engineers across the country due to its versatile design. This highly versatile system has available “pipe-in” options on most models, along with built-in curb or grated inlets for simple integration into your stormdrain design. Curb Type The Curb Type configuration accepts sheet flow through a curb opening and is commonly used along road ways and parking lots. It can be used in sump or flow by conditions. Length of curb opening varies based on model and size. Grate Type The Grate Type configuration offers the same features and benefits as the Curb Type but with a grated/drop inlet above the systems pre-treatment chamber. It has the added benefit of allowing for pedestrian access over the inlet. ADA compliant grates are available to assure easy and safe access. The Grate Type can also be used in scenarios where runoff needs to be intercepted on both sides of landscape islands. Downspout Type The Downspout Type is a variation of the Vault Type and is designed to accept a vertical downspout pipe from roof top and podium areas. Some models have the option of utilizing an internal bypass, simplifying the overall design. The system can be installed as a raised planter and the exterior can be stuccoed or covered with other finishes to match the look of adjacent buildings. Vault Type The system’s patented horizontal flow biofilter is able to accept inflow pipes directly into the pre-treatment chamber, meaning the MWS Linear can be used in end-of-the-line installations. This greatly improves feasibility over typical decentralized designs that are required with other biofiltration/bioretention systems. Another benefit of the “pipe in” design is the ability to install the system downstream of underground detention systems to meet water quality volume requirements. Cartridge Housing Pre-filter Cartridge Curb Inlet Individual Media Filters Advantages & Operation The MWS Linear is the most efficient and versatile biofiltration system on the market, and the only system with horizontal flow which improves performance, reduces footprint, and minimizes maintenance. Figure-1 and Figure-2 illustrate the invaluable benefits of horizontal flow and the multiple treatment stages. • Horizontal Flow Biofiltration • Greater Filter Surface Area • Pre-Treatment Chamber • Patented Perimeter Void Area • Flow Control • No Depressed Planter Area Separation • Trash, sediment, and debris are separated before entering the pre-filter cartridges • Designed for easy maintenance access Pre-Filter Cartridges • Over 25 ft2 of surface area per cartridge • Utilizes BioMediaGREEN filter material • Removes over 80% of TSS & 90% of hydrocarbons • Prevents pollutants that cause clogging from migrating to the biofiltration chamber Pre-Treatment1 1 2 Drain-Down Line 1 2Vertical Underdrain Manifold Featured Advantages www.ModularWetlands.com | Page 5 Fig. 1 Horizontal Flow • Less clogging than downward flow biofilters • Water flow is subsurface • Improves biological filtration Patented Perimeter Void Area • Vertically extends void area between the walls and the WetlandMEDIA on all four sides. • Maximizes surface area of the media for higher treatment capacity WetlandMEDIA • Contains no organics and removes phosphorus • Greater surface area and 48% void space • Maximum evapotranspiration • High ion exchange capacity and light weight Flow Control • Orifice plate controls flow of water through WetlandMEDIA to a level lower than the media’s capacity. • Extends the life of the media and improves performance Drain-Down Filter • The Drain-Down is an optional feature that completely drains the pre-treatment chamber • Water that drains from the pre-treatment chamber between storm events will be treated 2x to 3x More Surface Area Than Traditional Downward Flow Bioretention Systems.Fig. 2 - Top View Biofiltration2 Discharge3 Perimeter Void A r e a 3 4 3Flow Control Riser Drain-Down Line Outlet Pipe Orientations Bypass Internal Bypass Weir (Side-by-Side Only) The Side-By-Side orientation places the pre- treatment and discharge chambers adjacent to one another allowing for integration of internal bypass. The wall between these chambers can act as a bypass weir when flows exceed the system’s treatment capacity, thus allowing bypass from the pre-treatment chamber directly to the discharge chamber. External Diversion Weir Structure This traditional offline diversion method can be used with the MWS Linear in scenarios where runoff is being piped to the system. These simple and effective structures are generally configured with two outflow pipes. The first is a smaller pipe on the upstream side of the diversion weir - to divert low flows over to the MWS Linear for treatment. The second is the main pipe that receives water once the system has exceeded treatment capacity and water flows over the weir. Flow By Design This method is one in which the system is placed just upstream of a standard curb or grate inlet to intercept the first flush. Higher flows simply pass by the MWS Linear and into the standard inlet downstream. End-To-End The End-To-End orientation places the pre-treatment and discharge chambers on opposite ends of the biofiltration chamber therefore minimizing the width of the system to 5 ft (outside dimension). This orientation is perfect for linear projects and street retrofits where existing utilities and sidewalks limit the amount of space available for installation. One limitation of this orientation is bypass must be external. Side-By-Side The Side-By-Side orientation places the pre- treatment and discharge chamber adjacent to one another with the biofiltration chamber running parallel on either side. This minimizes the system length, providing a highly compact footprint. It has been proven useful in situations such as streets with directly adjacent sidewalks, as half of the system can be placed under that sidewalk. This orientation also offers internal bypass options as discussed below. This simple yet innovative diversion trough can be installed in existing or new curb and grate inlets to divert the first flush to the MWS Linear via pipe. It works similar to a rain gutter and is installed just below the opening into the inlet. It captures the low flows and channels them over to a connecting pipe exiting out the wall of the inlet and leading to the MWS Linear. The DVERT is perfect for retrofit and green street applications that allows the MWS Linear to be installed anywhere space is available. DVERT Low Flow Diversion DVERT Trough www.ModularWetlands.com | Page 7 Rhode Island DEM Approved Approved as an authorized BMP and noted to achieve the following minimum removal efficiencies: 85% TSS, 60% Pathogens, 30% Total Phosphorus, and 30% Total Nitrogen. MASTEP Evaluation The University of Massachusetts at Amherst – Water Resources Research Center, issued a technical evaluation report noting removal rates up to 84% TSS, 70% Total Phosphorus, 68.5% Total Zinc, and more. Maryland Department Of The Environment Approved Granted ESD (Environmental Site Design) status for new construction, redevelopment and retrofitting when designed in accordance with the Design Manual. Washington State TAPE Approved The MWS Linear is approved for General Use Level Designation (GULD) for Basic, Enhanced, and Phosphorus treatment at 1 gpm/ft2 loading rate. The highest performing BMP on the market for all main pollutant categories. Approvals The MWS Linear has successfully met years of challenging technical reviews and testing from some of the most prestigious and demanding agencies in the nation, and perhaps the world. DEQ Assignment The Virginia Department of Environmental Quality assigned the MWS Linear, the highest phosphorus removal rating for manufactured treatment devices to meet the new Virginia Stormwater Management Program (VSMP) Technical Criteria. VA TSS Total Phosphorus Ortho Phosphorus Nitrogen Dissolved Zinc Dissolved Copper Total Zinc Total Copper Motor Oil 85%64%67%45%66%38%69%50%95% Performance The MWS Linear continues to outperform other treatment methods with superior pollutant removal for TSS, heavy metals, nutrients, hydrocarbons and bacteria. Since 2007 the MWS Linear has been field tested on numerous sites across the country. With it’s advanced pre-treatment chamber and innovative horizontal flow biofilter, the system is able to effectively remove pollutants through a combination of physical, chemical, and biological filtration processes. With the same biological processes found in natural wetlands, the MWS Linear harnesses natures ability to process, transform, and remove even the most harmful pollutants. Treatment Flow Sizing Table Model #Dimensions WetlandMediaSurface Area Treatment Flow Rate (cfs) MWS-L-4-4 4’ x 4’23 ft2 0.052 MWS-L-4-6 4’ x 6’32 ft2 0.073 MWS-L-4-8 4’ x 8’50 ft2 0.115 MWS-L-4-13 4’ x 13’63 ft2 0.144 MWS-L-4-15 4’ x 15’76 ft2 0.175 MWS-L-4-17 4’ x 17’90 ft2 0.206 MWS-L-4-19 4’ x 19’103 ft2 0.237 MWS-L-4-21 4’ x 21’117 ft2 0.268 MWS-L-8-8 8’ x 8’100 ft2 0.230 MWS-L-8-12 8’ x 12’151 ft2 0.346 MWS-L-8-16 8’ x 16’201 ft2 0.462 Flow Based Sizing The MWS Linear can be used in stand alone applications to meet treatment flow requirements. Since the MWS Linear is the only biofiltration system that can accept inflow pipes several feet below the surface it can be used not only in decentralized design applications but also as a large central end-of-the-line application for maximum feasibility. Volume Based Sizing Many states require treatment of a water quality volume and do not offer the option of flow based design. The MWS Linear and its unique horizontal flow makes it the only biofilter that can be used in volume based design installed downstream of ponds, detention basins, and underground storage systems. Treatment Volume Sizing Table Model #Treatment Capacity (cu. ft.) @ 24-Hour Drain Down Treatment Capacity (cu. ft.) @ 48-Hour Drain Down MWS-L-4-4 1140 2280 MWS-L-4-6 1600 3200 MWS-L-4-8 2518 5036 MWS-L-4-13 3131 6261 MWS-L-4-15 3811 7623 MWS-L-4-17 4492 8984 MWS-L-4-19 5172 10345 MWS-L-4-21 5853 11706 MWS-L-8-8 5036 10072 MWS-L-8-12 7554 15109 MWS-L-8-16 10073 20145 www.ModularWetlands.com | Page 9 Installation The MWS Linear is simple, easy to install, and has a space efficient design that offers lower excavation and installation costs compared to traditional tree-box type systems. The structure of the system resembles pre- cast catch basin or utility vaults and is installed in a similar fashion. The system is delivered fully assembled for quick installation. Generally, the structure can be unloaded and set in place in 15 minutes. Our experienced team of field technicians are available to supervise installations and provide technical support. Plant Selection Abundant plants, trees, and grasses bring value and an aesthetic benefit to any urban setting, but those in the MWS Linear do even more - they increase pollutant removal. What’s not seen, but very important, is that below grade the stormwater runoff/flow is being subjected to nature’s secret weapon: a dynamic physical, chemical, and biological process working to break down and remove non-point source pollutants. The flow rate is controlled in the MWS Linear, giving the plants more “contact time” so that pollutants are more successfully decomposed, volatilized and incorporated into the biomass of The MWS Linear’s micro/macro flora and fauna. A wide range of plants are suitable for use in the MWS Linear, but selections vary by location and climate. View suitable plants by selecting the list relative to your project location’s hardy zone. Please visit www.ModularWetlands.com/Plants for more information and various plant lists. Maintenance Reduce your maintenance costs, man hours, and materials with the MWS Linear. Unlike other biofiltration systems that provide no pre-treatment, the MWS Linear is a self-contained treatment train which incorporates simple and effective pre-treatment. Maintenance requirements for the biofilter itself are almost completely eliminated, as the pre-treatment chamber removes and isolates trash, sediments, and hydrocarbons. What’s left is the simple maintenance of an easily accessible pre-treatment chamber that can be cleaned by hand or with a standard vac truck. Only periodic replacement of low-cost media in the pre-filter cartridges is required for long term operation and there is absolutely no need to replace expensive biofiltration media. © Modular Wetland Systems, Inc. www.ModularWetlands.com | (855) 5MOD-WET | info@ModularWetlands.com ATTACHMENT B BMP CALCULATIONS Worksheet J: Summary of Harvested Water Demand and Feasibility 1 What demands for harvested water exist in the tributary area (check all that apply): 2 Toilet and urinal flushing □ 3 Landscape irrigation □ 4 Other:_______________________________________________________ □ 5 What is the design capture storm depth? (Figure III.1) d inches 6 What is the project size? A ac 7 What is the acreage of impervious area? IA ac For projects with multiple types of demand (toilet flushing, irrigation demand, and/or other demand) 8 What is the minimum use required for partial capture? (Table X.6) gpd 9 What is the project estimated wet season total daily use (Section X.2)? gpd 10 Is partial capture potentially feasible? (Line 9 > Line 8?) For projects with only toilet flushing demand 11 What is the minimum TUTIA for partial capture? (Table X.7) 12 What is the project estimated TUTIA? 13 Is partial capture potentially feasible? (Line 12 > Line 11?) For projects with only irrigation demand 14 What is the minimum irrigation area required based on conservation landscape design? (Table X.8) ac 15 What is the proposed project irrigated area? (multiply conservation landscaping by 1; multiply active turf by 2) ac 16 Is partial capture potentially feasible? (Line 15 > Line 14?) Provide supporting assumptions and citations for controlling demand calculation: ATTACHMENT C ORANGE COUNTY RAINFALL ZONES MAP O R A N G E C O U N T Y O R A N G E C O U N T Y RI V E R S I D E C O U N T Y RI V E R S I D E C O U N T Y OR A N G E C O U N T Y OR A N G E C O U N T Y SA N B E R N A R D I N O C O U N T Y SA N B E R N A R D I N O C O U N T Y ORANGE COUNTYORANGE COUNTY LOS ANGELES COUNTYLOS ANGELES COUNTY ORA N G E C O U N T Y ORA N G E C O U N T Y LOS A N G E L E S C O U N T Y LOS A N G E L E S C O U N T Y 1.05 0.7 10 . 9 5 0 . 9 0 . 8 5 0. 80. 7 5 0 . 7 0. 6 5 0. 9 5 0.7 0.9 0.9 0. 7 5 P:\ 9 5 2 6 E \ 6 - G I S \ M x d s \ R e p o r t s \ I n f i l t r a t i o n F e a s a b i l i t y _ 2 0 1 1 0 2 1 5 \ 9 5 2 6 E _ F i g u r e X V I - 1 _ R a i n f a l l Z o n e s _ 2 0 1 1 0 2 1 5 . m x d FIGURE JO B TIT L E SC A L E 1" = 1 . 8 m i l e s DE S I G N E D DR A W I N G CH E C K E D BM P 04 / 2 2 / 1 0 DAT E JO B N O . 95 2 6 - E THTH OR A N G E C O U N T Y TE C H N I C A L G U I D A N C E DO C U M E N T OR A N G E C O . CA RA I N F A L L Z O N E S SUBJECT TO FURTHER REVISION 03.67.21.8 Miles 06123 Kilometers LEGEND Orange County Precipitation Stations 24 Hour, 85th Percentile Rainfall (Inches) 24 Hour, 85th Percentile Rainfall (Inches) - Extrapolated City Boundaries Rainfall Zones Design Capture Storm Depth (inches) 0.65" 0.7 0.75 0.80 0.85 0.90 0.95 1.00 1.10" Note: Events defined as 24-hour periods (calendar days) with greater than 0.1 inches of rainfall. For areas outside of available data coverage, professional judgment shall be applied. XVI-1 ATTACHMENT D SOILS EXHIBIT O R A N G E C O U N T Y O R A N G E C O U N T Y RI V E R S I D E C O U N T Y RI V E R S I D E C O U N T Y OR A N G E C O U N T Y OR A N G E C O U N T Y SA N B E R N A R D I N O C O U N T Y SA N B E R N A R D I N O C O U N T Y ORANGE COUNTYORANGE COUNTY LOS ANGELES COUNTYLOS ANGELES COUNTY ORA N G E C O U N T Y ORA N G E C O U N T Y LOS A N G E L E S C O U N T Y LOS A N G E L E S C O U N T Y P:\ 9 5 2 6 E \ 6 - G I S \ M x d s \ R e p o r t s \ I n f i l t r a t i o n F e a s a b i l i t y _ 2 0 1 1 0 2 1 5 \ 9 5 2 6 E _ F i g u r e X V I - 2 b _ D - S o i l s _ 2 0 1 1 0 2 1 5 . m x d FIGURE XVI-2b JO B TIT L E SC A L E 1" = 1 . 8 m i l e s DE S I G N E D DR A W I N G CH E C K E D BM P 02 / 0 9 / 1 1 DAT E JO B N O . 95 2 6 - E THTH OR A N G E C O U N T Y IN F I L T R A T I O N S T U D Y OR A N G E C O . CA HY D R O L O G I C S O I L G R O U P TY P E D N R C S S O I L S U R V E Y SUBJECT TO FURTHER REVISION Source: D Soils: Natural Resources Conservation Service (NRCS) Soil Survey - soil_ca678, Orange County & Western Riverside Date of publication: 2006-02-08 !I 03.67.21.8 Miles 05102.5 Kilometers LEGEND City Boundaries Hydrologic Soil Groups D Soils http://websoilsurvey.nrcs.usda.gov/app/HomePage.htm ATTACHMENT E EDUCATIONAL MATERIALS www.modularwetlands.com Maintenance Guidelines for Modular Wetland System - Linear Maintenance Summary o 5HPRYH7UDVKIURP6FUHHQLQJ'HYLFHದDYHUDJHPDLQWHQDQFHLQWHUYDOLVWRPRQWKV PLQXWHDYHUDJHVHUYLFHWLPH o 5HPRYH6HGLPHQWIURP6HSDUDWLRQ&KDPEHUದDYHUDJHPDLQWHQDQFHLQWHUYDOLVWRPRQWKV PLQXWHDYHUDJHVHUYLFHWLPH o 5HSODFH&DUWULGJH)LOWHU0HGLDದDYHUDJHPDLQWHQDQFHLQWHUYDOWRPRQWKV PLQXWHSHUFDUWULGJHDYHUDJHVHUYLFHWLPH o 5HSODFH'UDLQ'RZQ)LOWHU0HGLDದDYHUDJHPDLQWHQDQFHLQWHUYDOLVWRPRQWKV PLQXWHDYHUDJHVHUYLFHWLPH o 7ULP9HJHWDWLRQದDYHUDJHPDLQWHQDQFHLQWHUYDOLVWRPRQWKV 6HUYLFHWLPHYDULHV System Diagram $FFHVVWRVFUHHQLQJGHYLFHVHSDUDWLRQ FKDPEHUDQGFDUWULGJHILOWHU $FFHVVWRGUDLQ GRZQILOWHU 3UH7UHDWPHQW &KDPEHU %LRILOWUDWLRQ&KDPEHU 'LVFKDUJH &KDPEHU 2XWIORZ 3LSH ,QIORZ3LSH RSWLRQDO I-131 www.modularwetlands.com Maintenance Procedures Screening Device 1. Remove grate or manhole cover to gain access to the screening device in the Pre- Treatment Chamber. Vault type units do not have screening device. Maintenance can be performed without entry. 2. Remove all pollutants collected by the screening device. Removal can be done manually or with the use of a vacuum truck. The hose of the vacuum truck will not damage the screening device. 3. Screening device can easily be removed from the Pre-Treatment Chamber to gain access to separation chamber and media filters below. Replace grate or manhole cover when completed. Separation Chamber 1. Perform maintenance procedures of screening device listed above before maintaining the separation chamber. 2. With a pressure washer spray down pollutants accumulated on walls and cartridge filters. 3. Vacuum out Separation Chamber and remove all accumulated pollutants. Replace screening device, grate or manhole cover when completed. Cartridge Filters 1. Perform maintenance procedures on screening device and separation chamber before maintaining cartridge filters. 2. Enter separation chamber. 3. Unscrew the two bolts holding the lid on each cartridge filter and remove lid. 4. Remove each of 4 to 8 media cages holding the media in place. 5. Spray down the cartridge filter to remove any accumulated pollutants. 6. Vacuum out old media and accumulated pollutants. 7. Reinstall media cages and fill with new media from manufacturer or outside supplier. Manufacturer will provide specification of media and sources to purchase. 8. Replace the lid and tighten down bolts. Replace screening device, grate or manhole cover when completed. Drain Down Filter 1. Remove hatch or manhole cover over discharge chamber and enter chamber. 2. Unlock and lift drain down filter housing and remove old media block. Replace with new media block. Lower drain down filter housing and lock into place. 3. Exit chamber and replace hatch or manhole cover. I-132 www.modularwetlands.com Maintenance Notes 1. Following maintenance and/or inspection, it is recommended the maintenance operator prepare a maintenance/inspection record. The record should include any maintenance activities performed, amount and description of debris collected, and condition of the system and its various filter mechanisms. 2. The owner should keep maintenance/inspection record(s) for a minimum of five years from the date of maintenance. These records should be made available to the governing municipality for inspection upon request at any time. 3. Transport all debris, trash, organics and sediments to approved facility for disposal in accordance with local and state requirements. 4. Entry into chambers may require confined space training based on state and local regulations. 5. No fertilizer shall be used in the Biofiltration Chamber. 6. Irrigation should be provided as recommended by manufacturer and/or landscape architect. Amount of irrigation required is dependent on plant species. Some plants may require irrigation. I-133 www.modularwetlands.com Maintenance Procedure Illustration Screening Device The screening device is located directly under the manhole or grate over the Pre-Treatment Chamber. It’s mounted directly underneath for easy access and cleaning. Device can be cleaned by hand or with a vacuum truck. Separation Chamber The separation chamber is located directly beneath the screening device. It can be quickly cleaned using a vacuum truck or by hand. A pressure washer is useful to assist in the cleaning process. I-134 www.modularwetlands.com Cartridge Filters The cartridge filters are located in the Pre-Treatment chamber connected to the wall adjacent to the biofiltration chamber. The cartridges have removable tops to access the individual media filters. Once the cartridge is open media can be easily removed and replaced by hand or a vacuum truck. Drain Down Filter The drain down filter is located in the Discharge Chamber. The drain filter unlocks from the wall mount and hinges up. Remove filter block and replace with new block. I-135 www.modularwetlands.com Trim Vegetation Vegetation should be maintained in the same manner as surrounding vegetation and trimmed as needed. No fertilizer shall be used on the plants. Irrigation per the recommendation of the manufacturer and or landscape architect. Different types of vegetation requires different amounts of irrigation. I-136 www.modularwetlands.com Inspection Form Modular Wetland System, Inc. P. 760.433-7640 F. 760-433-3176 E.Info@modularwetlands.com I-137 For Office Use Only (city) (Zip Code)(Reviewed By) Owner / Management Company (Date) Contact Phone ( )_ Inspector Name Date / / Time AM / PM Weather Condition Additional Notes Yes Depth: Yes No Modular Wetland System Type (Curb, Grate or UG Vault):Size (22', 14' or etc.): Other Inspection Items: Storm Event in Last 72-hours? No YesType of Inspection Routine Follow Up Complaint Storm Office personnel to complete section to the left. 2972 San Luis Rey Road, Oceanside, CA 92058 P (760) 433-7640 F (760) 433-3176 Inspection Report Modular Wetlands System Is the filter insert (if applicable) at capacity and/or is there an accumulation of debris/trash on the shelf system? Does the cartridge filter media need replacement in pre-treatment chamber and/or discharge chamber? Any signs of improper functioning in the discharge chamber? Note issues in comments section. Chamber: Is the inlet/outlet pipe or drain down pipe damaged or otherwise not functioning properly? Structural Integrity: Working Condition: Is there evidence of illicit discharge or excessive oil, grease, or other automobile fluids entering and clogging the unit? Is there standing water in inappropriate areas after a dry period? Damage to pre-treatment access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Damage to discharge chamber access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Does the MWS unit show signs of structural deterioration (cracks in the wall, damage to frame)? Project Name Project Address Inspection Checklist CommentsNo Does the depth of sediment/trash/debris suggest a blockage of the inflow pipe, bypass or cartridge filter? If yes, specify which one in the comments section. Note depth of accumulation in in pre-treatment chamber. Is there a septic or foul odor coming from inside the system? Is there an accumulation of sediment/trash/debris in the wetland media (if applicable)? Is it evident that the plants are alive and healthy (if applicable)? Please note Plant Information below. Sediment / Silt / Clay Trash / Bags / Bottles Green Waste / Leaves / Foliage Waste:Plant Information No Cleaning Needed Recommended Maintenance Additional Notes: Damage to Plants Plant Replacement Plant Trimming Schedule Maintenance as Planned Needs Immediate Maintenance I-138 www.modularwetlands.com Maintenance Report Modular Wetland System, Inc. P. 760.433-7640 F. 760-433-3176 E.Info@modularwetlands.com I-139 For Office Use Only (city) (Zip Code)(Reviewed By) Owner / Management Company (Date) Contact Phone ( )_ Inspector Name Date / / Time AM / PM Weather Condition Additional Notes Site Map # Comments: 2972 San Luis Rey Road, Oceanside, CA 92058 P. 760.433.7640 F. 760.433.3176 Inlet and Outlet Pipe Condition Drain Down Pipe Condition Discharge Chamber Condition Drain Down Media Condition Plant Condition Media Filter Condition Long: MWS Sedimentation Basin Total Debris Accumulation Condition of Media 25/50/75/100 (will be changed @ 75%) Operational Per Manufactures' Specifications (If not, why?) Lat:MWS Catch Basins GPS Coordinates of Insert Manufacturer / Description / Sizing Trash Accumulation Foliage Accumulation Sediment Accumulation Type of Inspection Routine Follow Up Complaint Storm Storm Event in Last 72-hours? No Yes Office personnel to complete section to the left. Project Address Project Name Cleaning and Maintenance Report Modular Wetlands System I-140 Ayude a prevenir la contaminación del océano For more information, please call the Orange County Stormwater Program at 1-877-89-SPILL (1-877-897-7455) or visit www.ocwatersheds.com Report sewage spills and discharges that are not contained to your site to the Orange County 24-Hour Water Pollution Problem Reporting Hotline at 1-877-89-SPILL (1-877-897-7455) For emergencies, dial 911. Help Prevent Ocean Pollution: Tips for the Food Service IndustryClean beaches and healthy creeks, rivers, bays and ocean are important to Orange County. Fats, oils and grease from restaurants and food service facilities can cause sewer line blockages that may result in sewage overflow into your facility and into storm drains. Unlike water in sanitary sewers (from sinks and toilets), water in storm drains is not treated before entering our waterways and should never contain washwater, trash, grease or other materials. You would never dump oil and trash into the ocean, so don’t let it enter the storm drains. Follow these tips to help prevent water pollution. The Ocean Begins at Your Front Door Printed on Recycled Paper Best Kitchen Practices Food Waste Disposal Scrape food waste off of plates, utensils, pots, food preparation and cooking areas and dispose of it in the trash. Never put food waste down the drain. Food scraps often contain grease, which can clog sewer pipes and result in sewage backups and overflows. Grease & Oil Disposal Never put oil or grease down the drain. Contain grease and oil by using covered grease storage containers or installing a grease interceptor. Never overfill your grease storage container or transport it without a cover. Grease control devices must be emptied and cleaned by permitted companies. Keep maintenance records on site. For a list of oil/grease recycling companies, contact the CIWMB at www. ciwmb.ca.gov/foodwaste/render.htm or contact your local sanitation district. Minor Spill Cleanup Always use dry cleanup methods, such as a rag, damp mop or broom. Never hose a spill into the street, gutter or storm drain. Dumpster Cleanup Pick up all debris around the dumpster. Always keep the lid on the dumpster closed. Never pour liquids into the dumpster or hose it out. Floor Mat Cleaning Sweep the floor mats regularly, discarding the debris into the trash. Hose off the mats in a mop sink, at a floor drain, or in an outdoor area that can contain the water. Never hose the mats in an area where the wastewater can flow to the street, gutter or storm drain. Washwater Disposal Dispose of washwater in a mop sink or an area with a floor drain. Never dispose of washwater in the street, gutter or storm drain. Major Spill Cleanup Have spill containment and clean- up kits readily available, and train all employees on how to use them. Immediately contain and clean the spill using dry methods. If the spill leaves your site, call (714) 567-6363. For more information, please call the Orange County Stormwater Program at 1-877-89-SPILL (1-877-897-7455) or visit www.ocwatersheds.com To report a spill, call the Orange County 24-Hour Water Pollution Problem Reporting Hotline at 1-877-89-SPILL (1-877-897-7455). For emergencies, dial 911. Proper Maintenance Practices for Your Business The Ocean Beginsat Your Front Door PROJECT PREVENTION Help Prevent Ocean Pollution: Preventing water pollution at your commercial/industrial site Clean beaches and healthy creeks, rivers, bays and ocean are important to Orange County. However, many landscape and building maintenance activities can lead to water pollution if you’re not careful. Paint, chemicals, plant clippings and other materials can be blown or washed into storm drains that flow to the ocean. Unlike water in sanitary sewers (from sinks and toilets), water in storm drains is not treated before entering our waterways. You would never pour soap or fertilizers into the ocean, so why would you let them enter the storm drains? Follow these easy tips to help prevent water pollution. Some types of industrial facilities are required to obtain coverage under the State General Industrial Permit. For more information visit: www.swrcb.ca.gov/stormwater/industrial.html Printed on Recycled Paper Tips for Pool Maintenance Call your trash hauler to replace leaking dumpsters. Do not dump any toxic substance or liquid waste on the pavement, the ground, or near a storm drain. Even materials that seem harmless such as latex paint or biodegradable cleaners can damage the environment. Recycle paints, solvents and other materials. For more information about recycling and collection centers, visit www.oclandfills.com. Store materials indoors or under cover and away from storm drains. Use a construction and demolition recycling company to recycle lumber, paper, cardboard, metals, masonry, carpet, plastic, pipes, drywall, rocks, dirt, and green waste. For a listing of construction and demolition recycling locations in your area, visit www.ciwmb.ca.gov/recycle. Properly label materials. Familiarize employees with Material Safety Data Sheets. Landscape Maintenance Compost grass clippings, leaves, sticks and other vegetation, or dispose of it at a permitted landfill or in green waste containers. Do not dispose of these materials in the street, gutter or storm drain. Irrigate slowly and inspect the system for leaks, overspraying and runoff. Adjust automatic timers to avoid overwatering. Follow label directions for the use and disposal of fertilizers and pesticides. Do not apply pesticides or fertilizers if rain is expected within 48 hours or if wind speeds are above 5 mph. Do not spray pesticides within 100 feet of waterways. Fertilizers should be worked into the soil rather than dumped onto the surface. If fertilizer is spilled on the pavement or sidewalk, sweep it up immediately and place it back in the container. Building Maintenance Never allow washwater, sweepings or sediment to enter the storm drain. Sweep up dry spills and use cat litter, towels or similar materials to absorb wet spills. Dispose of it in the trash. If you wash your building, sidewalk or parking lot, you must contain the water. Use a shop vac to collect the water and contact your city or sanitation agency for proper disposal information. Do not let water enter the street, gutter or storm drain. Use drop cloths underneath outdoor painting, scraping, and sandblasting work, and properly dispose of materials in the trash. Use a ground cloth or oversized tub for mixing paint and cleaning tools. Use a damp mop or broom to clean floors. Cover dumpsters to keep insects, animals, rainwater and sand from entering. Keep the area around the dumpster clear of trash and debris. Do not overfill the dumpster. PROJECT PREVENTION Proper Maintenance Practices for your Business Never Dispose of Anything in the Storm Drain. I-108 I-109 I-110 I-111 I-112 I-113 I-114 I-115