Final
Water Quality Management Plan
For:
WattEV
1388 S. "E" Street
(formerly 1380 S. "E" Street)
San Bernardino, CA 92408
APN(s): 0141-252-08
Prepared for:
City of Riverside
3900 Main Street
Riverside, CA 92522
(951) 826-5311
Prepared by:
234 North Arrowhead Avenue
San Bernardino, CA 92408
(909) 885-3806
Approval Date: _____________________
Water Quality Management Plan (WQMP)
Owner’s Certification
Project Owner’s Certification
This Water Quality Management Plan (WQMP) has been prepared for City of Riverside by Bonadiman & Associates, Inc. The WQMP is intended to comply with the requirements of the City of San Bernardino and the NPDES Area wide Stormwater Program requiring the preparation of a WQMP. The undersigned, while it owns the subject property, is responsible for the implementation of the provisions of this p lan and will ensure that this plan is amended as appropriate to reflect up-to-date conditions on the site consistent with San Bernardino County’s Municipal Storm Water Management Program and the intent of the NPDES Permit for San Bernardino County and the incorporated cities of San Bernardino County within the Santa Ana Region. Once the undersigned transfers its interest in the property, its successors in interest and the city/county shall be notified of the transfer. The new owner will be informed of its r esponsibility under this WQMP. A copy of the approved WQMP shall be available on the subject site in perpetuity. “I certify under a penalty of law that the provisions (implementation, operation, maintenance, and funding) of the WQMP have been accepted and that the plan will be transferred to future successors.” .
Project Data
Permit/Application
Number(s):
THR23-012 Grading Permit Number(s): LD2300006
Tract/Parcel Map
Number(s):
Building Permit Number(s):
CUP, SUP, and/or APN (Specify Lot Numbers if Portions of Tract): APN: 0141-252-08 Owner’s Signature
Owner: City of Riverside
Title Owner
Representative
Address
3900 Main Street
Riverside CA 92522
Email
Telephone # (951) 826-5311
Signature Date
Water Quality Management Plan (WQMP)
Contents
Preparer’s Certification
Project Data
Permit/Application
Number(s):
THR23-012 Grading Permit Number(s): LD2300006
Tract/Parcel Map
Number(s):
Building Permit Number(s):
CUP, SUP, and/or APN (Specify Lot Numbers if Portions of Tract): APN: 0141-252-08 “The selection, sizing and design of stormwater treatment and other stormwater quality and quantity control measures in this plan were prepared under my oversight and meet the requirements of Regional Water Quality Control Board Order No. R8-2010-0036.”
Engineer: James T. Stanton PE Stamp Below
Title Vice President of Engineering
Company Joseph E. Bonadiman & Associates, Inc.
Address
234 North Arrowhead Avenue San Bernardino, CA
92408
Email [email protected]
Telephone # (909) 885-3806
Signature
Date 4/7/23 Rev. 5/23/24 - Official address of 1388 S E Street replaced as applicable Water Quality Management Plan (WQMP)
Contents ii
Table of Contents
Section 1 Discretionary Permits ............................................................................... 1-1 Section 2 Project Description ................................................................................... 2-1
2.1 Project Information ........................................................................................ 2-1
2.2 Property Ownership / Management .............................................................. 2-2
2.3 Potential Stormwater Pollutants ................................................................... 2-3
2.4 Water Quality Credits ........ ……………………………………………………………………………. 2-4 Section 3 Site and Watershed Description ............................................................... 3-1 Section 4 Best Management Practices ..................................................................... 4-1
4.1 Source Control BMP ....................................................................................... 4-1
4.1.1 Pollution Prevention .................................................................................................... 4-1
4.1.2 Preventative LID Site Design Practices ..................................................................... 4-6
4.2 Project Performance Criteria ........................................................................................ 4-7
4.3 Project Conformance Analysis ...................................................................................... 4-12
4.3.1 Site Design Hydrologic Source Control BMP ........................................................... 4-14
4.3.2 Infiltration BMP .......................................................................................................... 4-16
4.3.3 Harvest and Use BMP ................................................................................................. 4-18
4.3.4 Biotreatment BMP ...................................................................................................... 4.19
4.3.5 Conformance Summary .............................................................................................. 4-23
4.3.6 Hydromodification Control BMP .............................................................................. 4-24
4.4 Alternative Compliance Plan (if applicable) ............................................................... 4-25 Section 5 Inspection & Maintenance Responsibility Post Construction BMPs ........... 5-1 Section 6 WQMP Attachments ................................................................................ 6-1
6.1 Site Plan and Drainage Plan .......................................................................................... 6-1
6.2 Electronic Data Submittal ............................................................................................. 6-2
6.3 Post Construction .......................................................................................................... 6-3
6.4 Other Supporting Documentation .............................................................................. 6-4 Water Quality Management Plan (WQMP)
Contents iii
Forms
Form 1-1 Project Information ............................................................................................... 1-1 Form 2.1-1 Description of Proposed Project ......................................................................... 2-1 Form 2.2-1 Property Ownership/Management ..................................................................... 2-2 Form 2.3-1 Pollutants of Concern ......................................................................................... 2-3 Form 2.4-1 Water Quality Credits ......................................................................................... 2-4 Form 3-1 Site Location and Hydrologic Features ................................................................. 3-1 Form 3-2 Hydrologic Characteristics .................................................................................... 3-2 Form 3-3 Watershed Description .......................................................................................... 3-3 Form 4.1-1 Non-Structural Source Control BMP ................................................................... 4-2 Form 4.1-2 Structural Source Control BMP .......................................................................... 4-4 Form 4.1-3 Site Design Practices Checklist ........................................................................... 4-6 Form 4.2-1 LID BMP Performance Criteria for Design Capture Volume ............................. 4-7 Form 4.2-2 Summary of HCOC Assessment .......................................................................... 4-8 Form 4.2-3 HCOC Assessment for Runoff Volume ............................................................... 4-9 Form 4.2-4 HCOC Assessment for Time of Concentration .................................................. 4-10 Form 4.2-5 HCOC Assessment for Peak Runoff .................................................................... 4-11 Form 4.3-1 Infiltration BMP Feasibility ................................................................................ 4-13 Form 4.3-2 Site Design Hydrologic Source Control BMP ..................................................... 4-14 Form 4.3-3 Infiltration LID BMP ........................................................................................... 4-17 Form 4.3-4 Harvest and Use BMP ......................................................................................... 4-18 Form 4.3-5 Selection and Evaluation of Biotreatment BMP ................................................ 4-19 Form 4.3-6 Volume Based Biotreatment – Bioretention and Planter Boxes w/Underdrains 4-20 Form 4.3-7 Volume Based Biotreatment- Constructed Wetlands and Extended Detention 4-21 Form 4.3-8 Flow Based Biotreatment ................................................................................... 4-22 Form 4.3-9 Conformance Summary and Alternative Compliance Volume Estimate .......... 4-23 Form 4.3-10 Hydromodification Control BMP ..................................................................... 4-24 Form 5-1 BMP Inspection and Maintenance ........................................................................ 5-1 Water Quality Management Plan (WQMP)
1-1
Section 1 Discretionary Permit(s)
Form 1-1 Project Information
Project Name
WattEV
1388 S. "E" Street
San Bernardino, CA 92408
Project Owner Contact Name: City of Riverside
Mailing
Address:
3900 Main St
Riverside, CA 92522
E-mail
Address: Telephone: (951) 826-5311
Permit/Application Number(s): THR23-012 Tract/Parcel Map Number(s):
Additional Information/
Comments:
Description of Project:
Proposed project consists of a new electric truck leasing service operation 4.09 acre (178,290 SF). Currently the site is a former car dealership. There is no building. Most of the site is now covered with asphalt in desrepair. Proposed project would consist of a building of approximately 2,660 SF, 155,615 SF of hardscape, and 22,675 SF of landscape. The impervious percentage is 87.28%. The site currently drains to the south. The project would maintain this natural drainage pattern. A total of seven catch basins leading to an underground chamber system is proposed.
Provide summary of Conceptual
WQMP conditions (if previously
submitted and approved). Attach
complete copy.
Water Quality Management Plan (WQMP)
2-1
Section 2 Project Description
2.1 Project Information
This section of the WQMP should provide the information listed below. The information provided for Conceptual/ Preliminary WQMP should give sufficient detail to identify the major proposed site design and LID BMPs and other anticipated water quality features that impact site planning. Final Project WQMP must specifically identify all BMP incorporated into the final site design and provide other detailed information as described herein.
The purpose of this information is to help determine the applicable development category, pollutants of concern, watershed description, and long term maintenance responsibilities for the project, and any applicable water quality credits. This information will be used in conjunction with the information in Section 3, Site Description, to establish the performance criteria and to select the LID BMP or other BMP for the project or other alternative programs that the project will participate in, which are described in Section 4.
Form 2.1-1 Description of Proposed Project
1 Development Category (Select all that apply):
Significant re-development
involving the addition or
replacement of 5,000 ft2 or
more of impervious surface on
an already developed site
New development involving
the creation of 10,000 ft2 or
more of impervious surface
collectively over entire site
Automotive repair
shops with standard
industrial classification (SIC)
codes 5013, 5014, 5541,
7532- 7534, 7536-7539
Restaurants (with SIC
code 5812) where the land
area of development is
5,000 ft2 or more
Hillside developments of
5,000 ft2 or more which are
located on areas with known
erosive soil conditions or
where the natural slope is
25 percent or more
Developments of 2,500 ft2
of impervious surface or more
adjacent to (within 200 ft) or
discharging directly into
environmentally sensitive areas
or waterbodies listed on the
CWA Section 303(d) list of
impaired waters.
Parking lots of 5,000 ft2
or more exposed to storm
water
Retail gasoline outlets
that are either 5,000 ft2 or
more, or have a projected
average daily traffic of 100
or more vehicles per day
Non-Priority / Non-Category Project May require source control LID BMPs and other LIP requirements. Please consult with local jurisdiction on specific requirements.
2 Project Area (ft2): 178,290 3 Number of Dwelling Units: 0 4 SIC Code: 4212 5 Is Project going to be phased? Yes No If yes, ensure that the WQMP evaluates each phase as a distinct DA, requiring LID BMPs to address runoff at time of completion.
6 Does Project include roads? Yes No If yes, ensure that applicable requirements for transportation projects are addressed (see Appendix A of TGD for WQMP)
Water Quality Management Plan (WQMP)
2-2
2.2 Property Ownership/Management
Describe the ownership/management of all portions of the project and site. State whether any infrastructure will transfer to public agencies (City, County, Caltrans, etc.) after project completion. State if a h omeowners or property owners association will be formed and be responsible for the long-term maintenance of project stormwater facilities. Describe any lot-level stormwater features that will be the responsibility of individual property owners.
Form 2.2-1 Property Ownership/Management
Describe property ownership/management responsible for long-term maintenance of WQMP stormwater facilities:
City of Riverside will be responsible for long-term maintenance of WQMP stormwater facilities.
City of Riverside
3900 Main Street
Riverside, CA 92522
(951) 826-5311
Water Quality Management Plan (WQMP)
2-3
2.3 Potential Stormwater Pollutants
Determine and describe expected stormwater pollutants of concern based on land uses and site activities (refer to Table 3-3 in the TGD for WQMP).
Form 2.3-1 Pollutants of Concern
Pollutant
Please check:
E=Expected, N=Not
Expected
Additional Information and Comments
Pathogens (Bacterial / Virus) E N Per section 3.3 of the TGD for WQMP, potential sources include animal waste.
Phosphorous E N Per section 3.3 of the TGD for WQMP, potential sources include fertilizers and eroded soils.
Nitrogen E N Per section 3.3 of the TGD for WQMP, potential sources include fertilizers and eroded soils.
Sediment E N Per section 3.3 of the TGD for WQMP, potential sources include eroded soils.
Metals E N Per section 3.3 of the TGD for WQMP, potential sources include brake pad and tire tread wear associated with driving.
Oil and Grease E N
Per section 3.3 of the TGD for WQMP, potential sources include petroleum hydrocarbon products, motor products from leaking vehicles, esters, oils, fats, waxes, and high molecular-weight fatty acids.
Trash/Debris E N Per section 3.3 of the TGD for WQMP, potential sources include paper, plastic, polystyrene packing foam, and aluminum materials.
Pesticides / Herbicides E N Per section 3.3 of the TGD for WQMP, potential sources include fertilizers and pest sprays.
Organic Compounds E N Per section 3.3 of the TGD for WQMP, potential sources include solvents and cleaning compounds.
Other: E N
Other: E N
Other: E N
Other: E N
Other: E N
Other: E N
Water Quality Management Plan (WQMP)
2-4
2.4 Water Quality Credits
A water quality credit program is applicable for certain types of development projects if it is not feasible to meet the requirements for on-site LID. Proponents for eligible projects, as described below, can apply for water quality credits that would reduce project obligations for selecting and sizing other treatment BMP or participating in other alternative compliance programs. Refer to Section 6.2 in the TGD for WQM P to determine if water quality credits are applicable for the project.
Form 2.4-1 Water Quality Credits
1 Project Types that Qualify for Water Quality Credits: Select all that apply Redevelopment projects that
reduce the overall impervious
footprint of the project site.
[Credit = % impervious reduced]
Higher density
development projects
Vertical density [20%]
7 units/ acre [5%]
Mixed use development,
(combination of residential,
commercial, industrial, office,
institutional, or other land uses
which incorporate design principles
that demonstrate environmental
benefits not realized through single
use projects) [20%]
Brownfield
redevelopment
(redevelop real property
complicated by presence
or potential of hazardous
contaminants) [25%]
Redevelopment projects in
established historic district,
historic preservation area, or
similar significant core city center
areas [10%]
Transit-oriented
developments (mixed use
residential or commercial
area designed to maximize
access to public
transportation) [20%]
In-fill projects (conversion of
empty lots & other underused
spaces < 5 acres, substantially
surrounded by urban land uses, into
more beneficially used spaces, such
as residential or commercial areas)
[10%]
Live-Work
developments (variety of
developments designed
to support residential and
vocational needs) [20%]
2 Total Credit % 0 (Total all credit percentages up to a maximum allowable credit of 50 percent) Description of Water Quality
Credit Eligibility (if applicable) N/A
Water Quality Management Plan (WQMP)
3-1
Section 3 Site and Watershed Description
Describe the project site conditions that will facilitate the selection of BMP through an analysis of the physical conditions and limitations of the site and its receiving waters. Identify distinct drainage areas (DA) that collect flow from a portion of the site and describe how runoff from each DA (and sub-watershed DMAs) is conveyed to the site outlet(s). Refer to Section 3.2 in the TGD for WQMP. The form below is provided as an example.
Then complete Forms 3.2 and 3.3 for each DA on the project site. If the project has more than one drainage area for stormwater management, then complete additional versions of these forms for each DA / outlet.
Form 3-1 Site Location and Hydrologic Features
Site coordinates take GPS
measurement at approximate center
of site
Latitude 34.07553 Longitude -117.29470 Thomas Bros Map page 606 1 San Bernardino County climatic region: Valley Mountain 2 Does the site have more than one drainage area (DA): Yes No If no, proceed to Form 3-2. If yes, then use this form to show a conceptual schematic describing DMAs and hydrologic feature connecting DMAs to the site outlet(s). An example is provided below that can be modified for proposed project or a drawing clearly showing DMA and flow routing may be attached Conveyance Briefly describe on-site drainage features to convey runoff that is not retained within a DMA DA-1 TO BMP-1 Drainage area drains to an underground infiltration system through catch basins. Overflow flows through parkway culvert located at south end of site along S. "E" Street.
BMP-1
DA-1
Water Quality Management Plan (WQMP)
3-2
Form 3-2 Existing Hydrologic Characteristics for Drainage Area 1 For Drainage Area 1’s sub-watershed DMA,
provide the following characteristics
DMA A
(Asphalt)
DMA B
(Building-Roof)
DMA C
(Concrete)
DMA D
(Pervious)
1 DMA drainage area (ft2) 142,029 2,660 10,926 22,675
2 Existing site impervious area (ft2) 124,176 124,176 124,176 124,176 3 Antecedent moisture condition For desert
areas, use
http://www.sbcounty.gov/dpw/floodcontrol/pdf/2
0100412_map.pdf
II II II II
4 Hydrologic soil group Refer to Watershed
Mapping Tool –
http://sbcounty.permitrack.com/WAP
A A A A
5 Longest flowpath length (ft) 704 0 274 718
6 Longest flowpath slope (ft/ft) 0.008 0.000 0.006 0.003 7 Current land cover type(s) Select from Fig C-3
of Hydrology Manual
Perennial
Grasses
Perennial
Grasses
Perennial
Grasses
Perennial
Grasses
8 Pre-developed pervious area condition:
Based on the extent of wet season vegetated cover
good >75%; Fair 50-75%; Poor <50% Attach photos
of site to support rating
Poor Poor Poor Poor
Water Quality Management Plan (WQMP)
3-3
Form 3-3 Watershed Description for Drainage Area 1
Receiving waters
Refer to Watershed Mapping Tool -
http://sbcounty.permitrack.com/WAP
See ‘Drainage Facilities” link at this website
Santa Ana River, Reach 5
Santa Ana River, Reach 4
Santa Ana River, Reach 3
Prado Reservoir
Santa Ana River, Reach 2
Santa Ana River, Reach 1
Pacific Ocean
Applicable TMDLs
Refer to Local Implementation Plan
Santa Ana River, Reach 4 - None
Santa Ana River, Reach 3 - Pathogens, Nitrate
Prado Reservoir - Pathogens
Santa Ana River, Reach 2 - None
Santa Ana River, Reach 1 - None
Pacific Ocean - None
303(d) listed impairments
Refer to Local Implementation Plan and Watershed
Mapping Tool –
http://sbcounty.permitrack.com/WAP and State
Water Resources Control Board website –
http://www.waterboards.ca.gov/santaana/water_iss
ues/programs/tmdl/index.shtml
Santa Ana River, Reach 4 - Indicator Bacteria
Santa Ana River, Reach 3 - Copper, Lead and Indicator Bacteria Prado Reservoir - pH
Environmentally Sensitive Areas (ESA)
Refer to Watershed Mapping Tool –
http://sbcounty.permitrack.com/WAP
Areas within 200': San Bernardino Kangaroo Rat
Unlined Downstream Water Bodies
Refer to Watershed Mapping Tool –
http://sbcounty.permitrack.com/WAP
None
Hydrologic Conditions of Concern
Yes Complete Hydrologic Conditions of Concern (HCOC) Assessment. Include Forms 4.2-2 through Form 4.2-5 and Hydromodification BMP Form 4.3-10 in submittal No
Watershed–based BMP included in a RWQCB
approved WAP
Yes Attach verification of regional BMP evaluation criteria in WAP • More Effective than On-site LID
• Remaining Capacity for Project DCV
• Upstream of any Water of the US
• Operational at Project Completion
• Long-Term Maintenance Plan
No
Water Quality Management Plan (WQMP)
4-1
Section 4 Best Management Practices (BMP)
4.1 Source Control BMP
4.1.1 Pollution Prevention
Non-structural and structural source control BMP are required to be incorporated into all new development and significant redevelopment projects. Form 4.1-1 and 4.1-2 are used to describe specific source control BMPs used in the WQMP or to explain why a certain BMP is not applicable. Table 7-3 of the TGD for WQMP provides a list of applicable source control BMP for projects with specific types of potential pollutant sources or activities.
The source control BMP in this table must be implemented for projects with these specific types of potential pollutant sources or activities.
The preparers of this WQMP have reviewed the source control BMP requirements for new development and significant redevelopment projects. The preparers have also reviewed the specific BMP required for project as specified in Forms 4.1-1 and 4.1-2. All applicable non-structural and structural source control BMP shall be implemented in the project.
The information provided in Form 4.1.1 and 4.1.2 is based on section 7 of the TGD for WQMP (p.92-105) including table 7-3, CASQA BMP Handbooks and comments from the reviewing agency. The provided description of BMP implementation is a summary and not intended to be an all-inclusive list of actions. Refer to appendix 6.3 of the approved WQMP for applicable CASQA handouts and manufacturer information.
Water Quality Management Plan (WQMP)
4-2
Form 4.1-1 Non-Structural Source Control BMPs
Identifier Name
Check One
Describe BMP Implementation OR,
if not applicable, state reason Included Not
Applicable
N1 Education of Property Owners, Tenants
and Occupants on Stormwater BMPs
The Property Owner will provide BMP educational information materials to any employees, tenants (if any), and occupants.
N2 Activity Restrictions
Activity restrictions will be imposed by the owner to limit exposure of stormwater to potential pollutants. Activity restrictions include posting "No Littering" signs and ensuring pesticide application is performed by a certified applicator.
N3 Landscape Management BMPs Owner will ensure landscaping and irrigation is properly maintained. Fertilizers and pesticides be applied by certified persons.
N4 BMP Maintenance The property owner will ensure regular inspection, repair, and maintenance of BMP.
N5 Title 22 CCR Compliance
(How development will comply) No hazardous waste storage is proposed for this project.
N6 Local Water Quality Ordinances This project will comply with all local water quality ordinances through this WQMP.
N7 Spill Contingency Plan Not applicable for proposed project.
N8 Underground Storage Tank Compliance No underground storage tanks are proposed.
N9 Hazardous Materials Disclosure
Compliance No hazardous waste storage is proposed for this project.
N10 Uniform Fire Code Implementation No hazardous waste storage is proposed for this project.
Water Quality Management Plan (WQMP)
4-3
Form 4.1-1 Non-Structural Source Control BMPs
N11 Litter/Debris Control Program Owner will ensure weekly inspection and clean up for litter and debris.
N12 Employee Training Owner will ensure that employees are trained on BMPs.
N13 Housekeeping of Loading Docks No proposed loading docks.
N14 Catch Basin Inspection Program Owner will ensure catch basins are regularly inspected, repaired, and maintained.
N15 Vacuum Sweeping of Private Streets and
Parking Lots Parking areas shall be vacummed and sweeped monthly.
N16 Other Non-structural Measures for Public
Agency Projects Project is not a public agency project.
N17 Comply with all other applicable NPDES
permits
The proposed site will comply with the construction general permit through implementation of the site specific Storm Water Pollution Prevention Plan (SWPPP).
Water Quality Management Plan (WQMP)
4-4
Form 4.1-2 Structural Source Control BMPs
Identifier Name
Check One Describe BMP Implementation OR,
If not applicable, state reason Included Not
Applicable
S1 Provide storm drain system stencilling and signage
(CASQA New Development BMP Handbook SD-13)
All storm drain inlets and catch basins will be labeled. Stenciled labels shall state “No Dumping – Drains to River” or similar message discouraging any litter dumping.
S2
Design and construct outdoor material storage
areas to reduce pollution introduction (CASQA
New Development BMP Handbook SD-34)
No outdoor material storage.
S3
Design and construct trash and waste storage
areas to reduce pollution introduction (CASQA
New Development BMP Handbook SD-32)
Trash storage areas will be designed in accordance with the City of San Bernardino.
S4
Use efficient irrigation systems & landscape
design, water conservation, smart controllers, and
source control (Statewide Model Landscape
Ordinance; CASQA New Development BMP
Handbook SD-12)
Owner will ensure landscaping and irrigation is properly maintained. Irrigation controls shall include rain-triggered shutoff devices to prevent irrigation after precipitation.
S5
Finish grade of landscaped areas at a minimum of
1-2 inches below top of curb, sidewalk, or
pavement
Landscape areas will be a minimum of 1 inch below adjacent impervious areas.
S6
Protect slopes and channels and provide energy
dissipation (CASQA New Development BMP
Handbook SD-10)
Proposed site does not have slopes or channels.
S7 Covered dock areas (CASQA New Development
BMP Handbook SD-31) No dock areas are proposed.
S8
Covered maintenance bays with spill containment
plans (CASQA New Development BMP Handbook
SD-31)
No maintenance bays are proposed.
S9 Vehicle wash areas with spill containment plans
(CASQA New Development BMP Handbook SD-33) No vehicle washing is proposed.
S10 Covered outdoor processing areas (CASQA New
Development BMP Handbook SD-36) No outdoor processing proposed.
Water Quality Management Plan (WQMP)
4-5
Form 4.1-2 Structural Source Control BMPs
S11
Equipment wash areas with spill containment
plans (CASQA New Development BMP Handbook
SD-33)
No equipment washing proposed.
S12 Fueling areas (CASQA New Development BMP
Handbook SD-30) No fueling is proposed.
S13 Hillside landscaping (CASQA New Development
BMP Handbook SD-10) No hillside landscaping is proposed.
S14 Wash water control for food preparation areas No food preparation proposed.
S15 Community car wash racks (CASQA New
Development BMP Handbook SD-33) No car washing proposed.
Water Quality Management Plan (WQMP)
4-6
4.1.2 Preventative LID Site Design Practices
Site design practices associated with new LID requirements in the MS4 Permit should be considered in the earliest phases of a project. Preventative site design practices can result in smaller DCV for LID BMP and hydromodification control BMP by reducing runoff generation. Describe site design and drainage plan including:
Refer to Section 5.2 of the TGD for WQMP for more details.
Form 4.1-3 Preventative LID Site Design Practices Checklist Site Design Practices
If yes, explain how preventative site design practice is addressed in project site plan. If no, other LID BMPs must be selected to meet targets Minimize impervious areas: Yes No
Explanation: Impervious area has been minimized as much as possible for the proposed use of this site. Proposed site is 87% impervious.
Maximize natural infiltration capacity: Yes No
Explanation: Maximized natural infilitration capacity by incorporating a design that promotes water retention through placement of proposed landscape and infiltration BMPs.
Preserve existing drainage patterns and time of concentration: Yes No Explanation: Existing drainage patterns and time of concentration have been preserved as much as possible by avoiding channelization of natural drainage and retaining natural depressions of project area.
Disconnect impervious areas: Yes No
Explanation: Impervious areas cannot be disconnected as the project needs driving surfaces for truck parking and electric vehicle charging stations.
Protect existing vegetation and sensitive areas: Yes No Explanation: Existing site will be entirely replaced with hardscape and landscaping. LID BMP selected to meet target is an underground infiltration system.
Re-vegetate disturbed areas: Yes No
Explanation: Disturbed areas will be re-vegetated where possible.
Minimize unnecessary compaction in stormwater retention/infiltration basin/trench areas: Yes No Explanation: Stormwater BMP areas will be marked with flagging tape to minimize compaction and maximize natural infiltration capacity.
Utilize vegetated drainage swales in place of underground piping or imperviously lined swales: Yes No Explanation: Vegetated swales will not be used on this project. LID BMP selected to meet target is underground infiltration system.
Stake off areas that will be used for landscaping to minimize compaction during construction : Yes No Explanation: Landscape areas will be marked with flagging to minimize compaction and maximize natural infiltration capacity. ▪ A narrative of site design practices utilized or rationale for not using practices ▪ A narrative of how site plan incorporates preventive site design practices ▪ Include an attached Site Plan layout which shows how preventative site design practices are included in WQMP
Water Quality Management Plan (WQMP)
4-7
4.2 Project Performance Criteria
The purpose of this section of the Project WQMP is to establish targets for post -development hydrology based on performance criteria specified in the MS4 Permit. These targets include runoff volume for water quality control (referred to as LID design capture volume), and runoff volume, time of concentration, and peak runoff for protection of any downstream waterbody segments with a HCOC. If the project has more than one outlet for stormwater runoff, then complete additional versions of these forms for each DA / outlet.
Methods applied in the following forms include:
▪ For LID BMP Design Capture Volume (DCV), the San Bernardino County Stormwater Program requires use of the P6 method (MS4 Permit Section XI.D.6a.ii) – Form 4.2-1 ▪ For HCOC pre- and post-development hydrologic calculation, the San Bernardino County Stormwater Program requires the use of the Rational Method (San Bernardino County Hydrology Manual Section D). Forms 4.2 -2 through Form 4.2-5 calculate hydrologic variables including runoff volume, time of concentration, and peak runoff from the project site pre- and post-development using the Hydrology Manual Rational Method approach.
For projects greater than 640 acres (1.0 mi 2), the Rational Method and these forms should not be used. For such projects, the Unit Hydrograph Method (San Bernardino County Hydrology Manual Section E) shall be applied for hydrologic calculations for HCOC performance criteria.
Refer to Section 4 in the TGD for WQMP for detailed guidance and instructions.
Form 4.2-1 LID BMP Performance Criteria for Design Capture Volume (DA 1)
1 Project area DA 1 (ft2):
178,290
2 Imperviousness after applying preventative
site design practices (Imp%): 87.28
3 Runoff Coefficient (Rc): 0.692
Rc = 0.858(Imp%)^3-0.78(Imp%)^2+0.774(Imp%)+0.04
4 Determine 1-hour rainfall depth for a 2-year return period P2yr-1hr (in): 0.495 http://hdsc.nws.noaa.gov/hdsc/pfds/sa/sca_pfds.html 5 Compute P6, Mean 6-hr Precipitation (inches): 0.732
P6 = Item 4 *C1, where C1 is a function of site climatic region specified in Form 3-1 Item 1 (Valley = 1.4807; Mountain = 1.909; Desert = 1.2371) 6 Drawdown Rate
Use 48 hours as the default condition. Selection and use of the 24 hour drawdown time condition is subject to approval by the local jurisdiction. The necessary BMP footprint is a function of drawdown time. While shorter drawdown times reduce the performance criteria for LID BMP design capture volume, the depth of water that can be stored is also reduced.
24-hrs
48-hrs
7 Compute design capture volume, DCV (ft3): 14,788
DCV = 1/12 * [Item 1* Item 3 *Item 5 * C2], where C2 is a function of drawdown rate (24-hr = 1.582; 48-hr = 1.963) Compute separate DCV for each outlet from the project site per schematic drawn in Form 3-1 Item 2 Water Quality Management Plan (WQMP)
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Form 4.2-2 Summary of HCOC Assessment (DA 1)
Does project have the potential to cause or contribute to an HCOC in a downstream channel: Yes No Go to: http://sbcounty.permitrack.com/WAP
If “Yes”, then complete HCOC assessment of site hydrology for 2yr storm event using Forms 4.2-3 through 4.2-5 and insert results below (Forms 4.2-3 through 4.2-5 may be replaced by computer software analysis based on the San Bernardino County Hydrology Manual) If “No,” then proceed to Section 4.3 Project Conformance Analysis Condition Runoff Volume (ft3) Time of Concentration (min) Peak Runoff (cfs) Pre-developed
1 Form 4.2-3 Item 12
2 Form 4.2-4 Item 13
3 Form 4.2-5 Item 10
Post-developed
4 Form 4.2-3 Item 13
5 Form 4.2-4 Item 14
6 Form 4.2-5 Item 14
Difference
7 Item 4 – Item 1
8 Item 2– Item 5
9 Item 6 – Item 3
Difference
(as % of pre-developed)
10 %
Item 7 / Item 1
11 %
Item 8 / Item 2
12 %
Item 9 / Item 3
Water Quality Management Plan (WQMP)
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Form 4.2-3 HCOC Assessment for Runoff Volume (DA 1)
Weighted Curve Number
Determination for:
Pre-developed DA
DMA A DMA B DMA C DMA D DMA E DMA F DMA G DMA H
1a Land Cover type
2a Hydrologic Soil Group (HSG)
3a DMA Area, ft2 sum of areas of
DMA should equal area of DA
4a Curve Number (CN) use Items
1 and 2 to select the appropriate CN
from Appendix C-2 of the TGD for
WQMP
Weighted Curve Number
Determination for:
Post-developed DA
DMA A DMA B DMA C DMA D DMA E DMA F DMA G DMA H
1b Land Cover type
2b Hydrologic Soil Group (HSG)
3b DMA Area, ft2 sum of areas of
DMA should equal area of DA
4b Curve Number (CN) use Items
5 and 6 to select the appropriate CN
from Appendix C-2 of the TGD for
WQMP
5 Pre-Developed area-weighted CN: 7 Pre-developed soil storage capacity, S (in):
S = (1000 / Item 5) - 10
9 Initial abstraction, Ia (in):
Ia = 0.2 * Item 7
6 Post-Developed area-weighted CN: 8 Post-developed soil storage capacity, S (in):
S = (1000 / Item 6) - 10
10 Initial abstraction, Ia (in):
Ia = 0.2 * Item 8
11 Precipitation for 2 yr, 24 hr storm (in):
Go to: http://hdsc.nws.noaa.gov/hdsc/pfds/sa/sca_pfds.html 12 Pre-developed Volume (ft3):
Vpre =(1 / 12) * (Item sum of Item 3) * [(Item 11 – Item 9)^2 / ((Item 11 – Item 9 + Item 7) 13 Post-developed Volume (ft3):
Vpre =(1 / 12) * (Item sum of Item 3) * [(Item 11 – Item 10)^2 / ((Item 11 – Item 10 + Item 8) 14 Volume Reduction needed to meet HCOC Requirement, (ft3):
VHCOC = (Item 13 * 0.95) – Item 12
Water Quality Management Plan (WQMP)
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Form 4.2-4 HCOC Assessment for Time of Concentration (DA 1) Compute time of concentration for pre and post developed conditions for each DA (For projects using the Hydrology Manual complete the form below)
Variables
Pre-developed DA1
Use additional forms if there are more than 4 DMA
Post-developed DA1
Use additional forms if there are more than 4 DMA
DMA A DMA B DMA C DMA D DMA A DMA B DMA C DMA D
1 Length of flowpath (ft) Use Form 3-2
Item 5 for pre-developed condition
2 Change in elevation (ft)
3 Slope (ft/ft), So = Item 2 / Item 1
4 Land cover
5 Initial DMA Time of Concentration
(min) Appendix C-1 of the TGD for WQMP
6 Length of conveyance from DMA
outlet to project site outlet (ft)
May be zero if DMA outlet is at project site
outlet
7 Cross-sectional area of channel (ft2)
8 Wetted perimeter of channel (ft)
9 Manning’s roughness of channel (n)
10 Channel flow velocity (ft/sec)
Vfps = (1.49 / Item 9) * (Item 7/Item 8)^0.67 *
(Item 3)^0.5
11 Travel time to outlet (min)
Tt = Item 6 / (Item 10 * 60)
12 Total time of concentration (min)
Tc = Item 5 + Item 11
13 Pre-developed time of concentration (min): Minimum of Item 12 pre-developed DMA 14 Post-developed time of concentration (min): Minimum of Item 12 post-developed DMA 15 Additional time of concentration needed to meet HCOC requirement (min): TC-HCOC = (Item 14 * 0.95) – Item 13 Water Quality Management Plan (WQMP)
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Form 4.2-5 HCOC Assessment for Peak Runoff (DA 1)
Compute peak runoff for pre- and post-developed conditions Variables
Pre-developed DA to Project
Outlet (Use additional forms if
more than 3 DMA)
Post-developed DA to Project
Outlet (Use additional forms if
more than 3 DMA)
DMA A DMA B DMA C DMA A DMA B DMA C
1 Rainfall Intensity for storm duration equal to time of concentration Ipeak = 10^(LOG Form 4.2-1 Item 4 - 0.6 LOG Form 4.2-4 Item 5 /60) 2 Drainage Area of each DMA (ft2)
For DMA with outlet at project site outlet, include upstream DMA (Using example schematic in Form 3-1, DMA A will include drainage from DMA C) 3 Ratio of pervious area to total area
For DMA with outlet at project site outlet, include upstream DMA (Using example schematic in Form 3-1, DMA A will include drainage from DMA C) 4 Pervious area infiltration rate (in/hr)
Use pervious area CN and antecedent moisture condition with Appendix C-3 of the TGD for WQMP
5 Maximum loss rate (in/hr)
Fm = Item 3 * Item 4
Use area-weighted Fm from DMA with outlet at project site outlet, include upstream DMA (Using example schematic in Form 3-1, DMA A will include drainage from DMA C) 6 Peak Flow from DMA (cfs)
Qp =Item 2 * 0.9 * (Item 1 - Item 5)
7 Time of concentration adjustment factor for other DMA to site discharge point
Form 4.2-4 Item 12 DMA / Other DMA upstream of site discharge point (If ratio is greater than 1.0, then use maximum value of 1.0) DMA A n/a n/a
DMA B n/a n/a
DMA C n/a n/a
8 Pre-developed Qp at Tc for DMA A:
Qp = Item 6DMAA + [Item 6DMAB * (Item 1DMAA - Item
5DMAB)/(Item 1DMAB - Item 5DMAB)* Item 7DMAA/2] +
[Item 6DMAC * (Item 1DMAA - Item 5DMAC)/(Item 1DMAC -
Item 5DMAC)* Item 7DMAA/3]
9 Pre-developed Qp at Tc for DMA B:
Qp = Item 6DMAB + [Item 6DMAA * (Item 1DMAB - Item
5DMAA)/(Item 1DMAA - Item 5DMAA)* Item 7DMAB/1] +
[Item 6DMAC * (Item 1DMAB - Item 5DMAC)/(Item 1DMAC -
Item 5DMAC)* Item 7DMAB/3]
10 Pre-developed Qp at Tc for DMA C:
Qp = Item 6DMAC + [Item 6DMAA * (Item 1DMAC - Item
5DMAA)/(Item 1DMAA - Item 5DMAA)* Item 7DMAC/1] +
[Item 6DMAB * (Item 1DMAC - Item 5DMAB)/(Item 1DMAB
- Item 5DMAB)* Item 7DMAC/2]
10 Peak runoff from pre-developed condition confluence analysis (cfs): Maximum of Item 8, 9, and 10 (including additional forms as needed) 11 Post-developed Qp at Tc for DMA A:
Same as Item 8 for post-developed values
12 Post-developed Qp at Tc for DMA B:
Same as Item 9 for post-developed values
13 Post-developed Qp at Tc for DMA C:
Same as Item 10 for post-developed
values
14 Peak runoff from post-developed condition confluence analysis (cfs): Maximum of Item 11, 12, and 13 (including additional forms as needed) 15 Peak runoff reduction needed to meet HCOC Requirement (cfs): Qp-HCOC = (Item 14 * 0.95) – Item 10 Water Quality Management Plan (WQMP)
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4.3 Project Conformance Analysis
Complete the following forms for each project site DA to document that the proposed LID BMPs conform to the project DCV developed to meet performance criteria specified in the MS4 Permit (WQMP Template Section
4.2). For the LID DCV, the forms are ordered according to hierarchy of BMP selection as required by the MS4 Permit (see Section 5.3.1 in the TGD for WQMP). The forms compute the following for on -site LID BMP:
▪ Site Design and Hydrologic Source Controls (Form 4.3-2) ▪ Retention and Infiltration (Form 4.3-3)
▪ Harvested and Use (Form 4.3-4) or
▪ Biotreatment (Form 4.3-5).
At the end of each form, additional fields facilitate the determination of the extent of mitigation provided by the specific BMP category, allowing for use of the next category of BMP in the hierarchy, if necessary.
The first step in the analysis, using Section 5.3.2.1 of the TGD for WQMP, is to complete Forms 4.3 -1 and 4.3-3) to determine if retention and infiltration BMPs are infeasible for the project. For each feasibility crite rion in Form 4.3-1, if the answer is “Yes,” provide all study findings that includes relevant calculations, maps, data sources, etc. used to make the determination of infeasibility.
Next, complete Forms 4.3-2 and 4.3-4 to determine the feasibility of applicable HSC and harvest and use BMPs, and, if their implementation is feasible, the extent of mitigation of the DCV.
If no site constraints exist that would limit the type of BMP to be implemented in a DA, evaluate the use of combinations of LID BMPs, including all applicable HSC BMPs to maximize on-site retention of the DCV. If no combination of BMP can mitigate the entire DCV, implement the single BMP type, or combination of BMP types, that maximizes on-site retention of the DCV within the minimum effective area.
If the combination of LID HSC, retention and infiltration, and harvest and use BMPs are unable to mitigate the entire DCV, then biotreatment BMPs may be implemented by the project proponent. If biotreatment BMPs are used, then they must be sized to provide sufficient capacity for effective treatment of the remainder of the volume-based performance criteria that cannot be achieved with LID BMPs (TGD for WQMP Section 5.4.4.2).
Under no circumstances shall any portion of the DCV be released from the site witho ut effective mitigation and/or treatment.
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Form 4.3-1 Infiltration BMP Feasibility (DA 1)
Feasibility Criterion – Complete evaluation for each DA on the Project Site 1 Would infiltration BMP pose significant risk for groundwater related concerns? Yes No Refer to Section 5.3.2.1 of the TGD for WQMP
If Yes, Provide basis: (attach)
2 Would installation of infiltration BMP significantly increase the risk of geotechnical hazards? Yes No (Yes, if the answer to any of the following questions is yes, as established by a geotechnical expert):
• The location is less than 50 feet away from slopes steeper than 15 percent • The location is less than eight feet from building foundations or an alternative setback. • A study certified by a geotechnical professional or an available watershed study determines that stormwater infiltration would result in significantly increased risks of geotechnical hazards.
If Yes, Provide basis: (attach)
3 Would infiltration of runoff on a Project site violate downstream water rights? Yes No If Yes, Provide basis: (attach)
4 Is proposed infiltration facility located on hydrologic soil group (HSG) D soils or does the site geotechnical investigation indicate presence of soil characteristics, which support categorization as D soils? Yes No If Yes, Provide basis: (attach)
5 Is the design infiltration rate, after accounting for safety factor of 2.0, below proposed facility less than 0.3 in/hr (accounting for soil amendments)? Yes No If Yes, Provide basis: (attach)
6 Would on-site infiltration or reduction of runoff over pre-developed conditions be partially or fully inconsistent with watershed management strategies as defined in the WAP, or impair beneficial uses? Yes No See Section 3.5 of the TGD for WQMP and WAP
If Yes, Provide basis: (attach)
7 Any answer from Item 1 through Item 3 is “Yes”: Yes No If yes, infiltration of any volume is not feasible onsite. Proceed to Form 4.3-4, Harvest and Use BMP. If no, then proceed to Item 9 below. 8 Any answer from Item 4 through Item 6 is “Yes”: Yes No If yes, infiltration is permissible but is not required to be considered. Proceed to Form 4.3-2, Hydrologic Source Control BMP.
If no, then proceed to Item 9, below.
9 All answers to Item 1 through Item 6 are “No”: Yes No Infiltration of the full DCV is potentially feasible, LID infiltration BMP must be designed to infiltrate the full DCV to the MEP.
Proceed to Form 4.3-2, Hydrologic Source Control BMP.
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4.3.1 Site Design Hydrologic Source Control BMP
Section XI.E. of the Permit emphasizes the use of LID preventative measures; and the use of LID HSC BMPs reduces the portion of the DCV that must be addressed in downstream BMPs. Therefore, all applicable HSC shall be provided except where they are mutually exclusive with each other, or with other BMPs. Mutual exclusivity may result from overlapping BMP footprints such that either would be potentially feasible by itself, but both could not be implemented. Please note that while there are no numeric standards regarding the use of HSC, if a project cannot feasibly meet BMP sizing requirements or cannot fully add ress HCOCs, feasibility of all applicable HSC must be part of demonstrating that the BMP system has been designed to retain the maximum feasible portion of the DCV. Complete Form 4.3-2 to identify and calculate estimated retention volume from implementing site design HSC BMP. Refer to Section 5.4.1 in the TGD for more detailed guidance.
Form 4.3-2 Site Design Hydrologic Source Control BMPs (DA 1) 1 Implementation of Impervious Area Dispersion BMP (i.e. routing runoff from impervious to pervious areas), excluding impervious areas planned for routing to on-lot infiltration BMP: Yes No If yes, complete Items 2-5; If no,
proceed to Item 6
DA DMA
BMP Type
DA DMA
BMP Type
DA DMA
BMP Type (Use
additional forms for
more BMPs)
2 Total impervious area draining to pervious area (ft2) 3 Ratio of pervious area receiving runoff to impervious area 4 Retention volume achieved from impervious area
dispersion (ft3) V = Item2 * Item 3 * (0.5/12), assuming retention of 0.5 inches of runoff
0 0 0
5 Sum of retention volume achieved from impervious area dispersion (ft3): 0 Vretention =Sum of Item 4 for all BMPs 6 Implementation of Localized On-lot Infiltration BMPs (e.g. on-lot rain gardens): Yes No If yes, complete Items 7- 13 for aggregate of all on-lot infiltration BMP in each DA; If no, proceed to Item 14
DA DMA
BMP Type
DA DMA
BMP Type
DA DMA
BMP Type (Use
additional forms for
more BMPs)
7 Ponding surface area (ft2)
8 Ponding depth (ft)
9 Surface area of amended soil/gravel (ft2)
10 Average depth of amended soil/gravel (ft)
11 Average porosity of amended soil/gravel
12 Retention volume achieved from on-lot infiltration (ft3) Vretention = (Item 7 *Item 8) + (Item 9 * Item 10 * Item 11) 0 0 0
13 Runoff volume retention from on-lot infiltration (ft3): 0 Vretention =Sum of Item 12 for all BMPs Water Quality Management Plan (WQMP)
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Form 4.3-2 Site Design Hydrologic Source Control BMPs (DA 1) 14 Implementation of evapotranspiration BMP (green,
brown, or blue roofs): Yes No
If yes, complete Items 15-20. If no, proceed to Item 21
DA DMA
BMP Type
DA DMA
BMP Type
DA DMA
BMP Type (Use
additional forms for
more BMPs)
15 Rooftop area planned for ET BMP (ft2)
16 Average wet season ET demand (in/day)
Use local values, typical ~ 0.1
17 Daily ET demand (ft3/day)
Item 15 * (Item 16 / 12)
18 Drawdown time (hrs)
Copy Item 6 in Form 4.2-1
19 Retention Volume (ft3)
Vretention = Item 17 * (Item 18 / 24)
0 0 0
20 Runoff volume retention from evapotranspiration BMPs (ft3): 0 Vretention =Sum of Item 19 for all BMPs 21 Implementation of Street Trees: Yes No
If yes, complete Items 20-2. If no, proceed to Item 24
DA DMA
BMP Type
DA DMA
BMP Type
DA DMA
BMP Type (Use
additional forms for
more BMPs)
22 Number of Street Trees 0 0 0
23 Average canopy cover over impervious area (ft2)
24 Runoff volume retention from street trees (ft3)
Vretention = Item 22 * Item 23 * (0.05/12) assume runoff retention of
0.05 inches
0 0 0
25 Runoff volume retention from street tree BMPs (ft3): 0 Vretention = Sum of Item 24 for all BMPs 26 Implementation of residential rain barrels/cisterns: Yes No If yes, complete Items 27-28; If no, proceed to Item 29
DA DMA
BMP Type
DA DMA
BMP Type
DA DMA
BMP Type (Use
additional forms for
more BMPs)
27 Number of rain barrels/cisterns 0 0 0
28 Runoff volume retention from rain barrels/cisterns (ft3) Vretention = Item 27 * 3
0 0 0
29 Runoff volume retention from residential rain barrels/Cisterns (ft3): 0 Vretention =Sum of Item 28 for all BMPs 30 Total Retention Volume from Site Design Hydrologic Source Control BMPs: 0 Sum of Items 5, 13, 20, 25 and 29 Water Quality Management Plan (WQMP)
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4.3.2 Infiltration BMPs
Use Form 4.3-3 to compute on-site retention of runoff from proposed retention and infiltration BMPs. Volume retention estimates are sensitive to the percolation rate used, which determines the amount of runoff that can be infiltrated within the specified drawdown time. The infiltration safety factor reduces field measured percolation to account for potential inaccuracy associated with field measurements, declining BMP performance over time, and compaction during construction. Appendix D of the TGD for WQMP provides guidance on estimating an appropriate safety factor to use in Form 4.3-3.
If site constraints limit the use of BMPs to a single type and implementation of retention and infiltration BMPs mitigate no more than 40% of the DCV, then they are considered infeasible and the Project Proponent may evaluate the effectiveness of BMPs lower in the LID hierarchy of use (Section 5.5.1 of the TGD for WQMP) If implementation of infiltrations BMPs is feasible as determined using Form 4.3-1, then LID infiltration BMPs shall be implemented to the MEP (section 4.1 of the TGD for WQMP). .
Water Quality Management Plan (WQMP)
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Form 4.3-3 Infiltration LID BMP - including underground BMPs (DA 1) 1 Remaining LID DCV not met by site design HSC BMP (ft3): 14,788 Vunmet = Form 4.2-1 Item 7 - Form 4.3-2 Item 30 BMP Type Use columns to the right to compute runoff volume retention from proposed infiltration BMP (select BMP from Table 5-4 in TGD for WQMP) - Use additional forms for more BMPs
DA 1 DMA
BMP
Type Underground
Infiltration
DA DMA
BMP Type
DA DMA
BMP Type
(Use additional forms for
more BMPs)
2 Infiltration rate of underlying soils (in/hr) See Section 5.4.2 and Appendix D of the TGD for WQMP for minimum requirements for assessment methods
7.10 3 Infiltration safety factor See TGD Section 5.4.2 and Appendix D 2.81 4 Design percolation rate (in/hr) Pdesign = Item 2 / Item 3 2.52 5 Ponded water drawdown time (hr) Copy Item 6 in Form 4.2-1 48 6 Maximum ponding depth (ft) BMP specific, see Table 5-4 of the TGD for WQMP for BMP design details
7 Ponding Depth (ft) dBMP = Minimum of (1/12*Item 4*Item 5) or Item 6 8 Infiltrating surface area, SABMP (ft2) the lesser of the area needed for infiltration of full DCV or minimum space requirements from Table 5.7 of the TGD for WQMP
9 Amended soil depth, dmedia (ft) Only included in certain BMP types, see Table 5-4 in the TGD for WQMP for reference to BMP design details 10 Amended soil porosity
11 Gravel depth, dmedia (ft) Only included in certain BMP types, see Table 5-4 of the TGD for WQMP for BMP design details
12 Gravel porosity
13 Duration of storm as basin is filling (hrs) Typical ~ 3hrs 14 Above Ground Retention Volume (ft3) Vretention = Item 8 * [Item7 + (Item 9 * Item 10) + (Item 11 * Item 12) + (Item 13 * (Item 4 / 12))] 15 Underground Retention Volume (ft3) Volume determined using manufacturer’s specifications and calculations
14,788
16 Total Retention Volume from LID Infiltration BMPs: 14,788 (Sum of Items 14 and 15 for all infiltration BMP included in plan) 17 Fraction of DCV achieved with infiltration BMP: 100% Retention% = Item 16 / Form 4.2-1 Item 7 18 Is full LID DCV retained on-site with combination of hydrologic source control and LID retention and infiltration BMPs? Yes No If yes, demonstrate conformance using Form 4.3-10; If no, then reduce Item 3, Factor of Safety to 2.0 and increase Item 8, Infiltrating Surface Area, such that the portion of the site area used for retention and infiltration BMPs equals or exceeds the minimum effective area thresholds (Table 5 -7 of the TGD for WQMP) for the applicable category of development and repeat all above calculations.
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4.3.3 Harvest and Use BMP
Harvest and use BMP may be considered if the full LID DCV cannot be met by maximizing infiltration BMPs.
Use Form 4.3-4 to compute on-site retention of runoff from proposed harvest and use BMPs.
Volume retention estimates for harvest and use BMPs are sensitive to the on-site demand for captured stormwater. Since irrigation water demand is low in the wet season, when most rainfall events occur in San Bernardino County, the volume of water that can be used within a specified drawdown period is relatively low .
The bottom portion of Form 4.3-4 facilitates the necessary computations to show infeasibility if a minimum incremental benefit of 40 percent of the LID DCV would not be achievable with MEP implementation of on -site harvest and use of stormwater (Section 5.5.4 of the TGD for WQMP).
Form 4.3-4 Harvest and Use BMPs (DA 1)
1 Remaining LID DCV not met by site design HSC or infiltration BMP (ft3):
Vunmet = Form 4.2-1 Item 7 - Form 4.3-2 Item 30 – Form 4.3-3 Item 16 BMP Type(s) Compute runoff volume retention from proposed harvest and use BMP (Select BMPs from Table 5-4 of the TGD for WQMP) - Use additional forms for more BMPs
DA DMA
BMP Type
DA DMA
BMP Type
DA DMA
BMP Type
(Use additional forms
for more BMPs)
2 Describe cistern or runoff detention facility
3 Storage volume for proposed detention type (ft3) Volume of cistern
4 Landscaped area planned for use of harvested stormwater (ft2)
5 Average wet season daily irrigation demand (in/day)
Use local values, typical ~ 0.1 in/day
6 Daily water demand (ft3/day) Item 4 * (Item 5 / 12)
7 Drawdown time (hrs) Copy Item 6 from Form 4.2-1
8Retention Volume (ft3)
Vretention = Minimum of (Item 3) or (Item 6 * (Item 7 / 24)) 9 Total Retention Volume (ft3) from Harvest and Use BMP: Sum of Item 8 for all harvest and use BMP included in plan 10 Is the full DCV retained with a combination of LID HSC, retention and infiltration, and harvest and use BMPs? Yes No If yes, demonstrate conformance using Form 4.3-10. If no, then re-evaluate combinations of all LID BMP and optimize their implementation such that the maximum portion of the DCV is retained on-site (using a single BMP type or combination of BMP types). If the full DCV cannot be mitigated after this optimization process, proceed to Section 4.3.4.
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4.3.4 Biotreatment BMP
Biotreatment BMPs may be considered if the full LID DCV cannot be met by maximizing retention and infiltration, and harvest and use BMPs. A key consideration when using biotreatment BMP is the effectiveness of the proposed BMP in addressing the pollutants of concern for the project (see Table 5 -5 of the TGD for WQMP).
Use Form 4.3-5 to summarize the potential for volume based and/or flow based biotreatment options to biotreat the remaining unmet LID DCV w. Biotreatment computations are included as follows:
• Use Form 4.3-6 to compute biotreatment in small volume based biotreatment BMP (e.g. bioretention w/underdrains); • Use Form 4.3-7 to compute biotreatment in large volume based biotreatment BMP (e.g. constructed wetlands); • Use Form 4.3-8 to compute sizing criteria for flow-based biotreatment BMP (e.g. bioswales) Form 4.3-5 Selection and Evaluation of Biotreatment BMP (DA 1) 1 Remaining LID DCV not met by site design HSC,
infiltration, or harvest and use BMP for potential
biotreatment (ft3): Form 4.2-1 Item 7 - Form 4.3-2
Item 30 – Form 4.3-3 Item 16- Form 4.3-4 Item 9
List pollutants of concern Copy from Form 2.3-1.
2 Biotreatment BMP Selected
(Select biotreatment BMP(s)
necessary to ensure all pollutants of
concern are addressed through Unit
Operations and Processes, described
in Table 5-5 of the TGD for WQMP)
Volume-based biotreatment
Use Forms 4.3-6 and 4.3-7 to compute treated volume
Flow-based biotreatment
Use Form 4.3-8 to compute treated volume
Bioretention with underdrain
Planter box with underdrain
Constructed wetlands
Wet extended detention
Dry extended detention
Vegetated swale
Vegetated filter strip
Proprietary biotreatment
3 Volume biotreated in volume based
biotreatment BMP (ft3): Form 4.3-
6 Item 15 + Form 4.3-7 Item 13
4 Compute remaining LID DCV with
implementation of volume based biotreatment
BMP (ft3): Item 1 – Item 3
5 Remaining fraction of LID DCV for
sizing flow based biotreatment BMP:
% Item 4 / Item 1
6 Flow-based biotreatment BMP capacity provided (cfs): Use Figure 5-2 of the TGD for WQMP to determine flow capacity required to provide biotreatment of remaining percentage of unmet LID DCV (Item 5), for the project’s precipitation zone (Form 3-1 Item 1) 7 Metrics for MEP determination:
• Provided a WQMP with the portion of site area used for suite of LID BMP equal to minimum thresholds in Table 5-7 of the TGD for WQMP for the proposed category of development: If maximized on-site retention BMPs is feasible for partial capture, then LID BMP implementation must be optimized to retain and infiltrate the maximum portion of the DCV possible within the prescribed minimum effective area. The remaining portion of the DCV shall then be mitigated using biotreatment BMP.
Water Quality Management Plan (WQMP)
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Form 4.3-6 Volume Based Biotreatment (DA 1) –
Bioretention and Planter Boxes with Underdrains
Biotreatment BMP Type
(Bioretention w/underdrain, planter box w/underdrain, other comparable BMP)
DA DMA
BMP Type
DA DMA
BMP Type
DA DMA
BMP Type
(Use additional forms
for more BMPs)
1 Pollutants addressed with BMP List all pollutant of concern that will be effectively reduced through specific Unit Operations and Processes described in Table 5-5 of the TGD for WQMP
2 Amended soil infiltration rate Typical ~ 5.0
3 Amended soil infiltration safety factor Typical ~ 2.0 4 Amended soil design percolation rate (in/hr) Pdesign = Item 2 / Item 3
5 Ponded water drawdown time (hr) Copy Item 6 from Form 4.2-1 6 Maximum ponding depth (ft) see Table 5-6 of the TGD for WQMP for reference to BMP design details
7 Ponding Depth (ft) dBMP = Minimum of (1/12 * Item 4 * Item 5) or Item 6
8 Amended soil surface area (ft2)
9 Amended soil depth (ft) see Table 5-6 of the TGD for WQMP for reference to BMP design details
10 Amended soil porosity, n
11 Gravel depth (ft) see Table 5-6 of the TGD for WQMP for reference to BMP design details
12 Gravel porosity, n
13 Duration of storm as basin is filling (hrs) Typical ~ 3hrs 14 Biotreated Volume (ft3) Vbiotreated = Item 8 * [(Item 7/2) + (Item 9 * Item 10) +(Item 11 * Item 12) + (Item 13 * (Item 4 / 12))] 15 Total biotreated volume from bioretention and/or planter box with underdrains BMP:
Sum of Item 14 for all volume-based BMPs included in this form Water Quality Management Plan (WQMP)
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Form 4.3-7 Volume Based Biotreatment (DA 1) –
Constructed Wetlands and Extended Detention
Biotreatment BMP Type
Constructed wetlands, extended wet detention, extended dry detention, or other comparable proprietary BMP. If BMP includes multiple modules (e.g. forebay and main basin), provide separate estimates for storage and pollutants treated in each module.
DA DMA
BMP Type
DA DMA
BMP Type
(Use additional forms
for more BMPs)
Forebay Basin Forebay Basin
1 Pollutants addressed with BMP forebay and basin
List all pollutant of concern that will be effectively reduced through specific Unit Operations and Processes described in Table 5-5 of the TGD for WQMP
2 Bottom width (ft)
3 Bottom length (ft)
4 Bottom area (ft2) Abottom = Item 2 * Item 3
5 Side slope (ft/ft)
6 Depth of storage (ft)
7 Water surface area (ft2)
Asurface =(Item 2 + (2 * Item 5 * Item 6)) * (Item 3 + (2 * Item 5 * Item 6)) 8 Storage volume (ft3) For BMP with a forebay, ensure fraction of total storage is within ranges specified in BMP specific fact sheets, see Table 5-6 of the TGD for WQMP for reference to BMP design details V =Item 6 / 3 * [Item 4 + Item 7 + (Item 4 * Item 7)^0.5] 9 Drawdown Time (hrs) Copy Item 6 from Form 2.1
10 Outflow rate (cfs) QBMP = (Item 8forebay + Item 8basin) / (Item 9 * 3600) 11 Duration of design storm event (hrs)
12 Biotreated Volume (ft3)
Vbiotreated = (Item 8forebay + Item 8basin) +( Item 10 * Item 11 * 3600) 13 Total biotreated volume from constructed wetlands, extended dry detention, or extended wet detention :
(Sum of Item 12 for all BMP included in plan)
Water Quality Management Plan (WQMP)
4-22
Form 4.3-8 Flow Based Biotreatment (DA 1)
Biotreatment BMP Type
Vegetated swale, vegetated filter strip, or other comparable proprietary BMP
DA DMA
BMP Type
DA DMA
BMP Type
DA DMA
BMP Type
(Use additional forms
for more BMPs)
1 Pollutants addressed with BMP
List all pollutant of concern that will be effectively reduced through specific Unit Operations and Processes described in TGD Table 5-5 2 Flow depth for water quality treatment (ft)
BMP specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details
3 Bed slope (ft/ft)
BMP specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details
4 Manning's roughness coefficient
5 Bottom width (ft)
bw = (Form 4.3-5 Item 6 * Item 4) / (1.49 * Item 2^1.67 * Item 3^0.5) 6 Side Slope (ft/ft)
BMP specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details
7 Cross sectional area (ft2)
A = (Item 5 * Item 2) + (Item 6 * Item 2^2)
8 Water quality flow velocity (ft/sec)
V = Form 4.3-5 Item 6 / Item 7
9 Hydraulic residence time (min)
Pollutant specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details
10 Length of flow based BMP (ft)
L = Item 8 * Item 9 * 60
11 Water surface area at water quality flow depth (ft2) SAtop = (Item 5 + (2 * Item 2 * Item 6)) * Item 10
Water Quality Management Plan (WQMP)
4-23
4.3.5 Conformance Summary
Complete Form 4.3-9 to demonstrate how on-site LID DCV is met with proposed site design hydrologic source control, infiltration, harvest and use, and/or biotreatment BMP. The bottom line of the form is used to describe the basis for infeasibility determination for on-site LID BMP to achieve full LID DCV, and provides methods for computing remaining volume to be addressed in an alternative compliance plan. If the project has more than one outlet, then complete additional versions of this form for each outlet.
Form 4.3-9 Conformance Summary and Alternative
Compliance Volume Estimate (DA 1)
1 Total LID DCV for the Project DA-1 (ft3): 14,788 Copy Item 7 in Form 4.2-1 2 On-site retention with site design hydrologic source control LID BMP (ft3): 0 Copy Item 30 in Form 4.3-2 3 On-site retention with LID infiltration BMP (ft3): 14,788 Copy Item 16 in Form 4.3-3 4 On-site retention with LID harvest and use BMP (ft3): 0 Copy Item 9 in Form 4.3-4 5 On-site biotreatment with volume based biotreatment BMP (ft3): 0 Copy Item 3 in Form 4.3-5 6 Flow capacity provided by flow based biotreatment BMP (cfs): Copy Item 6 in Form 4.3-5 7 LID BMP performance criteria are achieved if answer to any of the following is “Yes”:
• Full retention of LID DCV with site design HSC, infiltration, or harvest and use BMP: Yes No If yes, sum of Items 2, 3, and 4 is greater than Item 1 • Combination of on-site retention BMPs for a portion of the LID DCV and volume-based biotreatment BMP that address all pollutants of concern for the remaining LID DCV: Yes No If yes, a) sum of Items 2, 3, 4, and 5 is greater than Item 1, and Items 2, 3 and 4 are maximized; or b) Item 6 is greater than Form
4.3--5 Item 6 and Items 2, 3 and 4 are maximized
▪ On-site retention and infiltration is determined to be infeasible and biotreatment BMP provide biotreatment for all pollutants of concern for full LID DCV: Yes No
If yes, Form 4.3-1 Items 7 and 8 were both checked yes
8 If the LID DCV is not achieved by any of these means, then the project may be allowed to develop an alternative compliance plan. Check box that describes the scenario which caused the need for alternative compliance:
• Combination of HSC, retention and infiltration, harvest and use, and biotreatment BMPs provide less than full LID DCV capture:
Checked yes for Form 4.3-5 Item 7, Item 6 is zero, and sum of Items 2, 3, 4, and 5 is less than Item 1. If so, apply water quality credits and calculate volume for alternative compliance, Valt = (Item 1 – Item 2 – Item 3 – Item 4 – Item 5) * (100 - Form 2.4-1 Item 2)% • An approved Watershed Action Plan (WAP) demonstrates that water quality and hydrologic impacts of urbanization are more effective when managed in at an off-site facility:
Attach appropriate WAP section, including technical documentation, showing effectiveness comparisons for the project site and regional watershed
Water Quality Management Plan (WQMP)
4-24
4.3.6 Hydromodification Control BMP
Use Form 4.3-10 to compute the remaining runoff volume retention, after LID BMP are implemented, needed to address HCOC, and the increase in time of concentration and decrease in peak runoff necessary to meet targets for protection of waterbodies with a potential HCOC. Describe hydromodification control BMP that address HCOC, which may include off-site BMP and/or in-stream controls. Section 5.6 of the TGD for WQMP provides additional details on selection and evaluation of hydromodification control BMP.
Form 4.3-10 Hydromodification Control BMPs (DA 1)
1 Volume reduction needed for HCOC
performance criteria (ft3):
(Form 4.2-2 Item 4 * 0.95) – Form 4.2-2 Item 1
2 On-site retention with site design hydrologic source control, infiltration, and harvest and use LID BMP (ft3): Sum of Form 4.3-9 Items 2, 3, and 4 Evaluate option to increase implementation of on-site retention in Forms 4.3-2, 4.3-3, and 4.3-4 in excess of LID DCV toward achieving HCOC volume reduction 3 Remaining volume for HCOC
volume capture (ft3): Item 1 –
Item 2
4 Volume capture provided by incorporating additional on-site or off-site retention BMPs (ft3): Existing downstream BMP may be used to demonstrate additional volume capture (if so, attach to this WQMP a hydrologic analysis showing how the additional volume would be retained during a 2-yr storm event for the regional watershed)
5 If Item 4 is less than Item 3, incorporate in-stream controls on downstream waterbody segment to prevent impacts due to hydromodification Attach in-stream control BMP selection and evaluation to this WQMP 6 Is Form 4.2-2 Item 11 less than or equal to 5%: Yes No If yes, HCOC performance criteria is achieved. If no, select one or more mitigation options below:
• Demonstrate increase in time of concentration achieved by proposed LID site design, LID BMP, and additional on-site or off-site retention BMP
BMP upstream of a waterbody segment with a potential HCOC may be used to demonstrate increased time of concentration through hydrograph attenuation (if so, show that the hydraulic residence time provided in BMP for a 2-year storm event is equal or greater than the addition time of concentration requirement in Form 4.2-4 Item 15) • Increase time of concentration by preserving pre-developed flow path and/or increase travel time by reducing slope and increasing cross-sectional area and roughness for proposed on-site conveyance facilities • Incorporate appropriate in-stream controls for downstream waterbody segment to prevent impacts due to hydromodification, in a plan approved and signed by a licensed engineer in the State of California 7 Form 4.2-2 Item 12 less than or equal to 5%: Yes No If yes, HCOC performance criteria is achieved. If no, select one or more mitigation options below:
• Demonstrate reduction in peak runoff achieved by proposed LID site design, LID BMPs, and additional on-site or off- site retention BMPs
BMPs upstream of a waterbody segment with a potential HCOC may be used to demonstrate additional peak runoff reduction through hydrograph attenuation (if so, attach to this WQMP, a hydrograph analysis showing how the peak runoff would be reduced during a 2-yr storm event)
• Incorporate appropriate in-stream controls for downstream waterbody segment to prevent impacts due to hydromodification, in a plan approved and signed by a licensed engineer in the State of California Water Quality Management Plan (WQMP)
4-25
4.4 Alternative Compliance Plan (if applicable)
Describe an alternative compliance plan (if applicable) for projects not fully able to infiltrate, harvest and use, or biotreat the DCV via on-site LID practices. A project proponent must develop an alternative compliance plan to address the remainder of the LID DCV. Depending on project type some projects may qualify for water quality credits that can be applied to reduce the DCV that must be treated prior to development of an alternative compliance plan (see Form 2.4-1, Water Quality Credits). Form 4.3-9 Item 8 includes instructions on how to apply water quality credits when computing the DCV that must be met through alternative compliance.
Alternative compliance plans may include one or more of the following elements:
• On-site structural treatment control BMP - All treatment control BMP should be located as close to possible to the pollutant sources and should not be located within receiving waters; • Off-site structural treatment control BMP - Pollutant removal should occur prior to discharge of runoff to receiving waters;
• Urban runoff fund or In-lieu program, if available
Depending upon the proposed alternative compliance plan, approval by the executive officer may or may not be required (see Section 6 of the TGD for WQMP).
Water Quality Management Plan (WQMP)
5-26
Section 5 Inspection and Maintenance Responsibility
for Post Construction BMP
All BMP included as part of the project WQMP are required to be maintained through regular scheduled inspection and maintenance (refer to Section 8, Post Construction BMP Requirements, in the TGD for WQMP) .
Fully complete Form 5-1 summarizing all BMP included in the WQMP. Attach additional forms as needed. The WQMP shall also include a detailed Operation and Maintenance Plan for all BMP and may require a Maintenance Agreement (consult the jurisdiction’s LIP). See CASQA and manufacturer handouts in O&M plan for more detailed BMP maintenance information. If a Maintenance Agreement is required, it must also be attached to the WQMP.
Form 5-1 BMP Inspection and Maintenance
(use additional forms as necessary)
BMP Reponsible
Party(s)
Inspection/Maintenance
Activities Required
Minimum
Frequency of
Activities
Underground Chambers Property
Owner
Inspect for trash and debris. Clean up trash and debris if needed. Monthly
Inspect for sediment and damage. Clean and repair per
manufacturer's recommendations.
Annually
prior to
October 1st
and after
major storm
events
These maintenance activities have been derived the manufacturer handouts, which is provided in appendix B of the O&M plan.
Education of Property
Owners, Tenants &
Occupants on
Stormwater BMPs
Property
Owner
The Property Owner will provide BMP educational
information materials to all employees and occupants of site.
Within 3
months of
hire and
annually
thereafter
Activity Restrictions Property
Owner
Inspect for "No Littering" signs to prevent pollution to stormwater BMP. Inspect to ensure only certified persons apply fertilizer and pesticide.
Daily
Landscape Management
BMPs
Property
Owner
Owner will ensure landscaping and irrigation is properly maintained. Fertilizers and pesticides be applied by
certified persons.
Weekly
BMP Maintenance Property
Owner Inspect, clean, repair and maintain BMP. Monthly
Water Quality Management Plan (WQMP)
5-27
Local Water Quality
Ordinances
Property
Owner
Local water quality ordinances shall be followed per local agency. As needed
Litter/Debris Control
Program
Property
Owner Inspect and clean site for trash and debris Weekly Employee Training Property
Owner
Educational materials on general housekeeping practices for the protection of storm water quality shall be provided to employees.
Within 3
months of
hire and
annually
thereafter
Catch Basin Inserts Property
Owner Inspect for trash, debris and damage Monthly
Vacuum Sweeping Property
Owner Parking lots shall be swept and vacuumed Monthly
NPDES Permits Property
Owner Approval and implementation of this WQMP and SWPPP. On going Provide storm
drain system
stenciling and
signage
Property
Owner
Inspected storm drain system
stenciling and signage for clarity and legibility. Relabel as needed.
Annually,
repair as
needed
Trash Storage Area Property
Owner Inspect, clean, and repair as needed. As needed
Use Efficient Irrigation
System and Landscape
Design
Property
Owner
Install irrigation systems with timing devices to avoid overwatering. Repair as needed Weekly
Finish grade of
landscaped areas at a
minimum of
1-2 inches below top of
curb, sidewalk, or
pavement
Property
Owner
Landscape areas will be a minimum of 1 inch below
adjacent impervious areas. Once
6-1
Section 6 WQMP Attachments
6.1. Site Plan and Drainage Plan
Include a site plan and drainage plan sheet set containing the following minimum information:
6.2 Electronic Data Submittal
Minimum requirements include submittal of PDF exhibits in addition to hard copies. Format must not require specialized software to open. If the local jurisdiction requires specialized electronic document formats (as described in their local Local Implementation Plan), this section will describe the contents (e.g., layering, nomenclature, geo-referencing, etc.) of these documents so that they may be interpreted efficiently and accurately.
6.3 Post Construction
Attach all O&M Plans and Maintenance Agreements for BMP to the WQMP. ▪ O&M Plan
o BMP Educational Materials
▪ Maintenance Agreement(s)
▪ Activity Restriction – C, C&R’s & Lease Agreements
6.4 Other Supporting Documentation
▪ San Bernardino County Watershed Mapping Tool Data
▪ NOAA Rainfall Data
▪ Soils information
▪ Project location
▪ Site boundary
▪ Land uses and land covers, as applicable
▪ Suitability/feasibility constraints
▪ Structural Source Control BMP locations
▪ Site Design Hydrologic Source Control BMP locations
▪ LID BMP details
▪ Drainage delineations and flow information
▪ Drainage connections
Appendix
6.1 – Site Plan and Drainage Plan
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Appendix 6.2 – Electronic Data Submittal
6.2 Note: A cd containing PDF versions of the WQMP documents will be included in this section during final engineering, when requested by the reviewing agency.
Appendix 6.3 – Post Construction
6.3 Note: As indicated in section 8.2.3 of the “Technical Guidance Document for Water Quality Management Plans”, dated June 7, 2013, a maintenance agreement may be required by local jurisdiction for proposed BMPs. A maintenance agreement will be provided in this section if requested by the local jurisdiction.
Appendix 6.4 – Other Supporting Documentation
6.4 WQMP Project Report
County of San Bernardino Stormwater Program
Santa Ana River Watershed Geodatabase
Monday, March 21, 2022
Note: The information provided in this report and on the Stormwater Geodatabase for the County of San Bernardino Stormwater Program is intended to provide basic guidance in the preparation of the applicant’s Water Quality Management Plan (WQMP) and should not be relied upon without independent verification.
Project Site Parcel Number(s): 014131202, 014125203, 014125302 Project Site Acreage: 12.556
HCOC Exempt Area: Yes. Verify that the project is completely with the HCOC exemption area.
Closest Receiving Waters:
(Applicant to verify based on local drainage facilities and topography.) System Number - 409
Facility Name - Twin Creek Channel Improved, COE
Owner - SBCFCD
Closest channel segment’s susceptibility to Hydromodification: EHM Highest downstream hydromodification susceptibility: High Is this drainage segment subject to TMDLs? No
Are there downstream drainage segments subject to TMDLs? No Is this drainage segment a 303d listed stream? No
Are there 303d listed streams downstream? Yes
Are there unlined downstream waterbodies? No
Project Site Onsite Soil Group(s): A
Environmentally Sensitive Areas within 200': SAN BERNARDINO KANGAROO RAT Groundwater Depth (FT): -140
Parcels with potential septic tanks within 1000': No
Known Groundwater Contamination Plumes within 1000': No Studies and Reports Related to Project Site: CSDP No. 7 Storm Drain Systems CSDP No. 7 Storm Drain Systems
CSDP No. 7 Storm Drain Systems
CSDP No. 7 Storm Drain Hydraulic Design Data
Upper Lytle Creek Drainage Investigation
SBVMWD High Groundwater / Pressure Zone Area
3/21/2022http://permitrack.sbcounty.gov/wap_report/report.asp?septic=No&SECAREA=SAN BER...
TECHNICAL GUIDANCE DOCUMENT APPENDICES
VII-35 December 20, 2013
Worksheet H: Factor of Safety and Design Infiltration Rate and Worksheet Factor Category Factor Description
Assigned
Weight (w)
Factor
Value (v)
Product (p)
p = w x v
A Suitability
Assessment
Soil assessment methods 0.25
Predominant soil texture 0.25
Site soil variability 0.25
Depth to groundwater / impervious
layer 0.25
Suitability Assessment Safety Factor, SA = p
B Design
Tributary area size 0.25
Level of pretreatment/ expected
sediment loads 0.25
Redundancy 0.25
Compaction during construction 0.25
Design Safety Factor, SB = p
Combined Safety Factor, STotal= SA x SB
Observed Infiltration Rate, inch/hr, Kobserved
(corrected for test-specific bias)
Design Infiltration Rate, in/hr, KDESIGN = KObserved / STotal Supporting Data
Briefly describe infiltration test and provide reference to test forms:
Note: The minimum combined adjustment factor shall not be less than 2.0 and the maximum combined adjustment factor shall not exceed 9.0.
0.25 1 0.25
1 0.25
1 0.25
2 0.50
1.25 2 0.50
2 0.50
3 0.75
2 0.50
2.25 2.81
7.10 2.52
See soils report No. 22051-F/BMP by Soils Southwest, Inc. in Appendix 6.4.
The observed infiltration rate was calculated averaging the two infiltration rates observed using the two Porchet method tests no. P-1 and P-2:
(7.40 + 6.81)/2 = 7.10
Source Control/Site Design BMPs
Spill Prevention, Control & Cleanup SC-11
September 2014 California Stormwater BMP Handbook 1 of 10 Industrial and Commercial
www.casqa.org
Description
Many activities that occur at an industrial or
commercial site have the potential to cause
accidental spills. Preparation for accidental
spills, with proper training and reporting
systems implemented, can minimize the
discharge of pollutants to the environment.
Spills and leaks are one of the largest
contributors of stormwater pollutants. Spill
prevention and control plans are applicable to
any site at which hazardous materials are stored
or used. An effective plan should have spill
prevention and response procedures that
identify hazardous material storage areas,
specify material handling procedures, describe
spill response procedures, and provide locations
of spill clean-up equipment and materials. The
plan should take steps to identify and
characterize potential spills, eliminate and
reduce spill potential, respond to spills when
they occur in an effort to prevent pollutants
from entering the stormwater drainage system,
and train personnel to prevent and control
future spills. An adequate supply of spill clean-
up materials must be maintained onsite.
Approach
General Pollution Prevention Protocols
Develop procedures to prevent/mitigate
spills to storm drain systems.
Develop and standardize reporting
procedures, containment, storage, and
disposal activities, documentation, and
follow-up procedures.
Establish procedures and/or controls to
minimize spills and leaks. The procedures
should address:
Description of the facility, owner and
address, activities, chemicals, and
quantities present;
Objectives
Cover
Contain
Educate
Reduce/Minimize
Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Minimum BMPs Covered
Good Housekeeping
Preventative
Maintenance
Spill and Leak
Prevention and
Response
Material Handling &
Waste Management
Erosion and Sediment
Controls
Employee Training
Program
Quality Assurance
Record Keeping
Spill Prevention, Control & Cleanup SC-11
September 2014 California Stormwater BMP Handbook 2 of 10 Industrial and Commercial
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Facility map of the locations of industrial materials; Notification and evacuation procedures;
Cleanup instructions;
Identification of responsible departments; and
Identify key spill response personnel.
Recycle, reclaim, or reuse materials whenever possible. This will reduce the amount of process materials that are brought into the facility.
Spill and Leak Prevention and Response
Spill Prevention
Develop procedures to prevent/mitigate spills to storm drain systems. Develop and standardize reporting procedures, containment, storage, and disposal activities, documentation, and follow-up procedures.
If illegal dumping is observed at the facility:
Post “No Dumping” signs with a phone number for reporting illegal dumping and disposal. Signs should also indicate fines and penalties applicable for illegal dumping.
Landscaping and beautification efforts may also discourage illegal dumping. Bright lighting and/or entrance barriers may also be needed to discourage illegal dumping.
Store and contain liquid materials in such a manner that if the container is ruptured, the contents will not discharge, flow, or be washed into the storm drainage system, surface waters, or groundwater.
If the liquid is oil, gas, or other material that separates from and floats on water, install a spill control device (such as a tee section) in the catch basins that collects runoff from the storage tank area.
Preventative Maintenance
Place drip pans or absorbent materials beneath all mounted taps, and at all potential drip and spill locations during filling and unloading of tanks. Any collected liquids or soiled absorbent materials must be reused/recycled or properly disposed. Store and maintain appropriate spill cleanup materials in a location known to all near the tank storage area; and ensure that employees are familiar with the site’s spill control plan and/or proper spill cleanup procedures.
Spill Prevention, Control & Cleanup SC-11
September 2014 California Stormwater BMP Handbook 3 of 10 Industrial and Commercial
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Sweep and clean the storage area monthly if it is paved, do not hose down the area to a storm drain.
Check tanks (and any containment sumps) daily for leaks and spills. Replace tanks that are leaking, corroded, or otherwise deteriorating with tanks in good condition.
Collect all spilled liquids and properly dispose of them. Label all containers according to their contents (e.g., solvent, gasoline). Label hazardous substances regarding the potential hazard (corrosive, radioactive, flammable, explosive, poisonous).
Prominently display required labels on transported hazardous and toxic materials (per US DOT regulations).
Identify key spill response personnel.
Spill Response
Clean up leaks and spills immediately.
Place a stockpile of spill cleanup materials where it will be readily accessible (e.g., near storage and maintenance areas).
On paved surfaces, clean up spills with as little water as possible. Use a rag for small spills, a damp mop for general cleanup, and absorbent material for larger spills.
If the spilled material is hazardous, then the used cleanup materials are also hazardous and must be sent to a certified laundry (rags) or disposed of as hazardous waste.
If possible use physical methods for the cleanup of dry chemicals (e.g., brooms, shovels, sweepers, or vacuums).
Never hose down or bury dry material spills. Sweep up the material and dispose of properly.
Chemical cleanups of material can be achieved with the use of adsorbents, gels, and foams. Use adsorbent materials on small spills rather than hosing down the spill.
Remove the adsorbent materials promptly and dispose of properly. For larger spills, a private spill cleanup company or Hazmat team may be necessary.
Spill Prevention, Control & Cleanup SC-11
September 2014 California Stormwater BMP Handbook 4 of 10 Industrial and Commercial
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Reporting
Report spills that pose an immediate threat to human health or the environment to the Regional Water Quality Control Board or local authority as location regulations dictate.
Federal regulations require that any oil spill into a water body or onto an adjoining shoreline be reported to the National Response Center (NRC) at 800-424-8802 (24 hour).
Report spills to 911 for dispatch and clean-up assistance when needed. Do not contact fire agencies directly.
Establish a system for tracking incidents. The system should be designed to identify the following:
Types and quantities (in some cases) of wastes;
Patterns in time of occurrence (time of day/night, month, or year); Mode of dumping (abandoned containers, “midnight dumping” from moving vehicles, direct dumping of materials, accidents/spills); Clean-up procedures; and
Responsible parties.
Employee Training Program
Educate employees about spill prevention and cleanup. Well-trained employees can reduce human errors that lead to accidental releases or spills:
The employee should have the tools and knowledge to immediately begin cleaning up a spill should one occur; and
Employees should be familiar with the Spill Prevention Control and Countermeasure Plan.
Employees should be educated about aboveground storage tank requirements.
Employees responsible for aboveground storage tanks and liquid transfers should be thoroughly familiar with the Spill Prevention Control and Countermeasure Plan and the plan should be readily available.
Train employees to recognize and report illegal dumping incidents.
Spill Prevention, Control & Cleanup SC-11
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Other Considerations (Limitations and Regulations)
State regulations exist for facilities with a storage capacity of 10,000 gallons or more of petroleum to prepare a Spill Prevention Control and Countermeasure (SPCC) Plan (Health & Safety Code Chapter 6.67).
State regulations also exist for storage of hazardous materials (Health & Safety Code Chapter 6.95), including the preparation of area and business plans for emergency response to the releases or threatened releases.
Consider requiring smaller secondary containment areas (less than 200 sq. ft.) to be connected to the sanitary sewer, prohibiting any hard connections to the storm drain.
Requirements
Costs (including capital and operation & maintenance)
Will vary depending on the size of the facility and the necessary controls. Prevention of leaks and spills is inexpensive. Treatment and/or disposal of contaminated soil or water can be quite expensive.
Maintenance (including administrative and staffing)
Develop spill prevention and control plan, provide and document training, conduct inspections of material storage areas, and supply spill kits. Extra time is needed to properly handle and dispose of spills, which results in increased labor costs.
Supplemental Information
Further Detail of the BMP
Reporting
Record keeping and internal reporting represent good operating practices because they can increase the efficiency of the facility and the effectiveness of BMPs. A good record keeping system helps the facility minimize incident recurrence, correctly respond with appropriate cleanup activities, and comply with legal requirements. A record keeping and reporting system should be set up for documenting spills, leaks, and other discharges, including discharges of hazardous substances in reportable quantities.
Incident records describe the quality and quantity of non-stormwater discharges to the storm sewer. These records should contain the following information:
Date and time of the incident;
Weather conditions;
Duration of the spill/leak/discharge;
Spill Prevention, Control & Cleanup SC-11
September 2014 California Stormwater BMP Handbook 6 of 10 Industrial and Commercial
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Cause of the spill/leak/discharge;
Response procedures implemented;
Persons notified; and
Environmental problems associated with the spill/leak/discharge.
Separate record keeping systems should be established to document housekeeping and preventive maintenance inspections, and training activities. All housekeeping and preventive maintenance inspections should be documented. Inspection documentation should contain the following information:
Date and time the inspection was performed;
Name of the inspector;
Items inspected;
Problems noted;
Corrective action required; and
Date corrective action was taken.
Other means to document and record inspection results are field notes, timed and dated photographs, videotapes, and drawings and maps.
Aboveground Tank Leak and Spill Control
Accidental releases of materials from aboveground liquid storage tanks present the potential for contaminating stormwater with many different pollutants. Materials spilled, leaked, or lost from tanks may accumulate in soils or on impervious surfaces and be carried away by stormwater runoff.
The most common causes of unintentional releases are:
Installation problems;
Failure of piping systems (pipes, pumps, flanges, couplings, hoses, and valves); External corrosion and structural failure;
Spills and overfills due to operator error; and
Leaks during pumping of liquids or gases from truck or rail car to a storage tank or vice versa.
Spill Prevention, Control & Cleanup SC-11
September 2014 California Stormwater BMP Handbook 7 of 10 Industrial and Commercial
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Storage of reactive, ignitable, or flammable liquids should comply with the Uniform Fire Code and the National Electric Code. Practices listed below should be employed to enhance the code requirements:
Tanks should be placed in a designated area.
Tanks located in areas where firearms are discharged should be encapsulated in concrete or the equivalent.
Designated areas should be impervious and paved with Portland cement concrete, free of cracks and gaps, in order to contain leaks and spills. Liquid materials should be stored in UL approved double walled tanks or surrounded by a curb or dike to provide the volume to contain 10 percent of the volume of all of the containers or 110 percent of the volume of the largest container, whichever is greater. The area inside the curb should slope to a drain. For used oil or dangerous waste, a dead-end sump should be installed in the drain. All other liquids should be drained to the sanitary sewer if available. The drain must have a positive control such as a lock, valve, or plug to prevent release of contaminated liquids.
Accumulated stormwater in petroleum storage areas should be passed through an oil/water separator.
Maintenance is critical to preventing leaks and spills. Conduct routine inspections and:
Check for external corrosion and structural failure.
Check for spills and overfills due to operator error. Check for failure of piping system (pipes, pumps, flanges, coupling, hoses, and valves).
Check for leaks or spills during pumping of liquids or gases from truck or rail car to a storage facility or vice versa.
Visually inspect new tank or container installation for loose fittings, poor welding, and improper or poorly fitted gaskets.
Inspect tank foundations, connections, coatings, and tank walls and piping system.
Look for corrosion, leaks, cracks, scratches, and other physical damage that may weaken the tank or container system.
Frequently relocate accumulated stormwater during the wet season.
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Periodically conduct integrity testing by a qualified professional.
Vehicle Leak and Spill Control
Major spills on roadways and other public areas are generally handled by highly trained Hazmat teams from local fire departments or environmental health departments. The measures listed below pertain to leaks and smaller spills at vehicle maintenance shops.
In addition to implementing the spill prevention, control, and clean up practices above, use the following measures related to specific activities:
Vehicle and Equipment Maintenance
Perform all vehicle fluid removal or changing inside or under cover to prevent the run-on of stormwater and the runoff of spills.
Regularly inspect vehicles and equipment for leaks, and repair immediately. Check incoming vehicles and equipment (including delivery trucks, and employee and subcontractor vehicles) for leaking oil and fluids. Do not allow leaking vehicles or equipment onsite.
Always use secondary containment, such as a drain pan or drop cloth, to catch spills or leaks when removing or changing fluids.
Immediately drain all fluids from wrecked vehicles.
Store wrecked vehicles or damaged equipment under cover. Place drip pans or absorbent materials under heavy equipment when not in use. Use absorbent materials on small spills rather than hosing down the spill. Remove the adsorbent materials promptly and dispose of properly. Promptly transfer used fluids to the proper waste or recycling drums. Don’t leave full drip pans or other open containers lying around.
Oil filters disposed of in trashcans or dumpsters can leak oil and contaminate stormwater. Place the oil filter in a funnel over a waste oil recycling drum to drain excess oil before disposal. Oil filters can also be recycled. Ask your oil supplier or recycler about recycling oil filters.
Store cracked batteries in a non-leaking secondary container. Do this with all cracked batteries, even if you think all the acid has drained out. If you drop a battery, treat it as if it is cracked. Put it into the containment area until you are sure it is not leaking.
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Vehicle and Equipment Fueling
Design the fueling area to prevent the run-on of stormwater and the runoff of spills:
Cover fueling area if possible.
Use a perimeter drain or slope pavement inward with drainage to a sump.
Pave fueling area with concrete rather than asphalt.
If dead-end sump is not used to collect spills, install an oil/water separator. Install vapor recovery nozzles to help control drips as well as air pollution. Discourage “topping-off’ of fuel tanks.
Use secondary containment when transferring fuel from the tank truck to the fuel tank.
Use absorbent materials on small spills and general cleaning rather than hosing down the area. Remove the absorbent materials promptly. Carry out all Federal and State requirements regarding underground storage tanks, or install above ground tanks.
Do not use mobile fueling of mobile industrial equipment around the facility; rather, transport the equipment to designated fueling areas.
Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. Train employees in proper fueling and cleanup procedures.
Industrial Spill Prevention Response
For the purposes of developing a spill prevention and response program to meet the stormwater regulations, facility managers should use information provided in this fact sheet and the spill prevention/response portions of the fact sheets in this handbook, for specific activities.
The program should:
Integrate with existing emergency response/hazardous materials programs (e.g., Fire Department).
Develop procedures to prevent/mitigate spills to storm drain systems. Identify responsible departments.
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Develop and standardize reporting procedures, containment, storage, and disposal activities, documentation, and follow-up procedures.
Address spills at municipal facilities, as well as public areas. Provide training concerning spill prevention, response and cleanup to all appropriate personnel.
References and Resources
California’s Nonpoint Source Program Plan. http://www.swrcb.ca.gov/nps/index.html.
Clark County Storm Water Pollution Control Manual. Available online at:
http://www.co.clark.wa.us/pubworks/bmpman.pdf.
King County Storm Water Pollution Control Manual. Available online at:
http://dnr.metrokc.gov/wlr/dss/spcm.htm.
Orange County Stormwater Program, Best Management Practices for Industrial/Commercial Business Activities. Available online at:
http://ocwatersheds.com/documents/bmp/industrialcommercialbusinessesactivities Santa Clara Valley Urban Runoff Pollution Prevention Program. http://www.scvurppp.org.
The Stormwater Managers Resource Center. http://www.stormwatercenter.net/.
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Description
Improper storage and handling of solid wastes
can allow toxic compounds, oils and greases,
heavy metals, nutrients, suspended solids, and
other pollutants to enter stormwater runoff.
The discharge of pollutants to stormwater from
waste handling and disposal can be prevented
and reduced by tracking waste generation,
storage, and disposal; reducing waste
generation and disposal through source
reduction, reuse, and recycling; and preventing
run-on and runoff.
Approach
Reduce potential for pollutant discharge
through source control pollution prevention
and BMP implementation. Successful
implementation depends on effective training
of employees on applicable BMPs and general
pollution prevention strategies and objectives.
General Pollution Prevention Protocols
Accomplish reduction in the amount of
waste generated using the following source
controls:
Production planning and sequencing;
Process or equipment modification;
Raw material substitution or
elimination;
Loss prevention and housekeeping;
Waste segregation and separation; and
Close loop recycling.
Establish a material tracking system to
increase awareness about material usage.
This may reduce spills and minimize
contamination, thus reducing the amount of
waste produced.
Recycle materials whenever possible.
Objectives
Cover
Contain
Educate
Reduce/Minimize
Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Minimum BMPs Covered
Good Housekeeping
Preventative
Maintenance
Spill and Leak Prevention
and Response
Material Handling &
Waste Management
Erosion and Sediment
Controls
Employee Training
Program
Quality Assurance Record
Keeping
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Use the entire product before disposing of the container. To the extent possible, store wastes under cover or indoors after ensuring all safety concerns such as fire hazard and ventilation are addressed. Provide containers for each waste stream at each work station. Allow time after shift to clean area.
Good Housekeeping
Cover storage containers with leak proof lids or some other means. If waste is not in containers, cover all waste piles (plastic tarps are acceptable coverage) and prevent stormwater run-on and runoff with a berm. The waste containers or piles must be covered except when in use.
Use drip pans or absorbent materials whenever grease containers are emptied by vacuum trucks or other means. Grease cannot be left on the ground. Collected grease must be properly disposed of as garbage.
Dispose of rinse and wash water from cleaning waste containers into a sanitary sewer if allowed by the local sewer authority. Do not discharge wash water to the street or storm drain. Clean in a designated wash area that drains to a clarifier. Transfer waste from damaged containers into safe containers. Take special care when loading or unloading wastes to minimize losses. Loading systems can be used to minimize spills and fugitive emission losses such as dust or mist. Vacuum transfer systems can minimize waste loss. Keep the waste management area clean at all times by sweeping and cleaning up spills immediately.
Use dry methods when possible (e.g., sweeping, use of absorbents) when cleaning around restaurant/food handling dumpster areas. If water must be used after sweeping/using absorbents, collect water and discharge through grease interceptor to the sewer.
Stencil or demarcate storm drains on the facility’s property with prohibitive message regarding waste disposal.
Cover waste piles with temporary covering material such as reinforced tarpaulin, polyethylene, polyurethane, polypropylene or hypalon.
If possible, move the activity indoor after ensuring all safety concerns such as fire hazard and ventilation are addressed.
Preventative Maintenance
Prevent stormwater run-on from entering the waste management area by enclosing the area or building a berm around the area.
Prevent waste materials from directly contacting rain.
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Cover waste piles with temporary covering material such as reinforced tarpaulin, polyethylene, polyurethane, polypropylene or hypalon.
Cover the area with a permanent roof if feasible.
Cover dumpsters to prevent rain from washing waste out of holes or cracks in the bottom of the dumpster.
Check waste containers weekly for leaks and to ensure that lids are on tightly.
Replace any that are leaking, corroded, or otherwise deteriorating. Sweep and clean the waste management area regularly. Use dry methods when possible (e.g., sweeping, vacuuming, use of absorbents) when cleaning around restaurant/food handling dumpster areas. If water must be used after sweeping/using absorbents, collect water and discharge through grease interceptor to the sewer.
Inspect and replace faulty pumps or hoses regularly to minimize the potential of releases and spills.
Repair leaking equipment including valves, lines, seals, or pumps promptly.
Spill Response and Prevention Procedures
Keep your spill prevention and plan up-to-date.
Have an emergency plan, equipment and trained personnel ready at all times to deal immediately with major spills.
Collect all spilled liquids and properly dispose of them. Store and maintain appropriate spill cleanup materials in a location known to all near the designated wash area.
Ensure that vehicles transporting waste have spill prevention equipment that can prevent spills during transport. Spill prevention equipment includes:
Vehicles equipped with baffles for liquid waste; and
Trucks with sealed gates and spill guards for solid waste.
Material Handling and Waste Management
Litter Control
Post “No Littering” signs and enforce anti-litter laws. Provide a sufficient number of litter receptacles for the facility. Clean out and cover litter receptacles frequently to prevent spillage.
Waste Collection
Keep waste collection areas clean.
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Inspect solid waste containers for structural damage regularly. Repair or replace damaged containers as necessary.
Secure solid waste containers; containers must be closed tightly when not in use. Do not fill waste containers with washout water or any other liquid. Ensure that only appropriate solid wastes are added to the solid waste container.
Certain wastes such as hazardous wastes, appliances, fluorescent lamps, pesticides, etc., may not be disposed of in solid waste containers (see chemical/ hazardous waste collection section below).
Do not mix wastes; this can cause chemical reactions, make recycling impossible, and complicate disposal. Affix labels to all waste containers.
Chemical/Hazardous Wastes
Select designated hazardous waste collection areas on-site. Store hazardous materials and wastes in covered containers and protect them from vandalism.
Place hazardous waste containers in secondary containment. Make sure that hazardous waste is collected, removed, and disposed of only at authorized disposal areas.
Hazardous waste cannot be reused or recycled; it must be disposed of by a licensed hazardous waste hauler.
Employee Training Program
Educate employees about pollution prevention measures and goals. Train employees how to properly handle and dispose of waste using the source control BMPs described above.
Train employees and subcontractors in proper hazardous waste management. Use a training log or similar method to document training. Ensure that employees are familiar with the site’s spill control plan and/or proper spill cleanup procedures.
Quality Assurance and Record Keeping
Keep accurate maintenance logs that document minimum BMP activities performed for waste handling and disposal, types and quantities of waste disposed of, and any improvement actions.
Keep accurate logs of spill response actions that document what was spilled, how it was cleaned up, and how the waste was disposed.
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Establish procedures to complete logs and file them in the central office.
Potential Capital Facility Costs and Operation & Maintenance Requirements
Facilities
Capital costs will vary substantially depending on the size of the facility and the types of waste handled. Significant capital costs may be associated with reducing wastes by modifying processes or implementing closed-loop recycling. Many facilities will already have indoor covered areas where waste materials will be stored and will require no additional capital expenditures for providing cover. If outdoor storage of wastes is required, construction of berms or other means to prevent stormwater run-on and runoff may require appropriate constructed systems for containment.
Capital investments will likely be required at some sites if adequate cover and containment facilities do not exist and can vary significantly depending upon site conditions.
Maintenance
Check waste containers weekly for leaks and to ensure that lids are on tightly.
Replace any that are leaking, corroded, or otherwise deteriorating. Sweep and clean the waste management area regularly. Use dry methods when possible (e.g., sweeping, use of absorbents) when cleaning around restaurant/food handling dumpster areas. If water must be used after sweeping/using absorbents, collect water and discharge through grease interceptor to the sewer. Inspect and replace faulty pumps or hoses regularly to minimize the potential of releases and spills.
Repair leaking equipment including valves, lines, seals, or pumps promptly.
References and Resources
Minnesota Pollution Control Agency, Industrial Stormwater Best Management Practices Guidebook. Available online at: http://www.pca.state.mn.us/index.php/view- document.html?gid=10557.
New Jersey Department of Environmental Protection, 2013. Basic Industrial Stormwater General Permit Guidance Document NJPDES General Permit No NJ0088315, Revised. Available online at:
http://www.nj.gov/dep/dwq/pdf/5G2_guidance_color.pdf.
Orange County Stormwater Program, Best Management Practices for Industrial/Commercial Business Activities. Available online at:
http://ocwatersheds.com/documents/bmp/industrialcommercialbusinessesactivities Waste Handling & Disposal SC-34
September 2014 California Stormwater BMP Handbook 6 of 6 Industrial and Commercial
www.casqa.org
Oregon Department of Environmental Quality, 2013. Industrial Stormwater Best Management Practices Manual- BMP 26 Fueling and Liquid Loading/Unloading Operations. Available online at:
http://www.deq.state.or.us/wq/wqpermit/docs/IndBMP021413.pdf.
Sacramento Stormwater Management Program. Best Management Practices for Industrial Storm Water Pollution Control. Available online at:
http://www.msa.saccounty.net/sactostormwater/documents/guides/industrial-BMP- manual.pdf.
Sacramento County Environmental Management Stormwater Program: Best Management Practices. Available online at:
http://www.emd.saccounty.net/EnvHealth/Stormwater/Stormwater-BMPs.html.
Santa Clara Valley Urban Runoff Pollution Prevention Program. http://www.scvurppp- w2k.com/
US EPA. National Pollutant Discharge Elimination System – Industrial Fact Sheet Series for Activities Covered by EPA’s Multi Sector General Permit. Available online at:
http://cfpub.epa.gov/npdes/stormwater/swsectors.cfm.
Building & Grounds Maintenance SC-41
Objectives
Cover
Contain
Educate
Reduce/Minimize
Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Description
Stormwater runoff from building and grounds maintenance activities can be contaminated with toxic hydrocarbons in solvents, fertilizers and pesticides, suspended solids, heavy metals, abnormal pH, and oils and greases. Utilizing the protocols in this fact sheet will prevent or reduce the discharge of pollutants to stormwater from building and grounds
maintenance activities by washing and cleaning up with as little water as possible, following good landscape management
practices, preventing and cleaning up spills immediately, keeping debris from entering the storm drains, and maintaining the stormwater collection system.
Approach
Reduce potential for pollutant discharge through source control pollution prevention and BMP implementation. Successful implementation depends on effective training of employees on applicable BMPs and general pollution prevention strategies and objectives.
Pollution Prevention
Switch to non-toxic chemicals for maintenance when
possible.
Choose cleaning agents that can be recycled.
Encourage proper lawn management and landscaping,
including use of native vegetation.
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Encourage use of Integrated Pest Management techniques for pest control. Encourage proper onsite recycling of yard trimmings.
Recycle residual paints, solvents, lumber, and other material as much as possible.
Suggested Protocols
Pressure Washing of Buildings, Rooftops, and Other Large Objects In situations where soaps or detergents are used and the surrounding area is paved, pressure washers must use a water collection device that enables collection of wash water and associated solids. A sump pump, wet vacuum or similarly effective device must be used to collect the runoff and loose materials. The collected runoff and solids must be disposed of properly.
If soaps or detergents are not used, and the surrounding area is paved, wash runoff does not have to be collected but must be screened. Pressure washers must use filter fabric or some other type of screen on the ground and/or in the catch basin to trap the particles in wash water runoff.
If you are pressure washing on a grassed area (with or without soap), runoff must be dispersed as sheet flow as much as possible, rather than as a concentrated stream. The wash runoff must remain on the grass and not drain to pavement.
Landscaping Activities
Dispose of grass clippings, leaves, sticks, or other collected vegetation as garbage, or by composting. Do not dispose of collected vegetation into waterways or storm drainage systems.
Use mulch or other erosion control measures on exposed soils.
Building Repair, Remodeling, and Construction
Do not dump any toxic substance or liquid waste on the pavement, the ground, or toward a storm drain.
Use ground or drop cloths underneath outdoor painting, scraping, and sandblasting work, and properly dispose of collected material daily.
Use a ground cloth or oversized tub for activities such as paint mixing and tool cleaning. Clean paintbrushes and tools covered with water-based paints in sinks connected to sanitary sewers or in portable containers that can be dumped into a sanitary sewer drain. Brushes and tools covered with non-water-based paints, finishes, or other materials must be cleaned in a manner that enables collection of used solvents (e.g., paint thinner, turpentine, etc.) for recycling or proper disposal.
Use a storm drain cover, filter fabric, or similarly effective runoff control mechanism if dust, grit, wash water, or other pollutants may escape the work area and enter a catch basin. This is particularly necessary on rainy days. The containment device(s) must be in place at the beginning of the work day, and accumulated dirty runoff and solids must be collected and disposed of before removing the containment device(s) at the end of the work day. 2 of 5 California Stormwater BMP Handbook January 2003
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If you need to de-water an excavation site, you may need to filter the water before discharging to a catch basin or off-site. If directed off-site, you should direct the water through hay bales and filter fabric or use other sediment filters or traps. Store toxic material under cover during precipitation events and when not in use. A cover would include tarps or other temporary cover material.
Mowing, Trimming, and Planting
Dispose of leaves, sticks, or other collected vegetation as garbage, by composting or at a permitted landfill. Do not dispose of collected vegetation into waterways or storm drainage systems.
Use mulch or other erosion control measures when soils are exposed. Place temporarily stockpiled material away from watercourses and drain inlets, and berm or cover stockpiles to prevent material releases to the storm drain system. Consider an alternative approach when bailing out muddy water: do not put it in the storm drain; pour over landscaped areas.
Use hand weeding where practical.
Fertilizer and Pesticide Management
Follow all federal, state, and local laws and regulations governing the use, storage, and disposal of fertilizers and pesticides and training of applicators and pest control advisors. Use less toxic pesticides that will do the job when applicable. Avoid use of copper-based pesticides if possible.
Do not use pesticides if rain is expected.
Do not mix or prepare pesticides for application near storm drains. Use the minimum amount needed for the job.
Calibrate fertilizer distributors to avoid excessive application. Employ techniques to minimize off-target application (e.g., spray drift) of pesticides, including consideration of alternative application techniques. Apply pesticides only when wind speeds are low.
Fertilizers should be worked into the soil rather than dumped or broadcast onto the surface. Irrigate slowly to prevent runoff and then only as much as is needed. Clean pavement and sidewalk if fertilizer is spilled on these surfaces before applying irrigation water.
Dispose of empty pesticide containers according to the instructions on the container label.
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Use up the pesticides. Rinse containers, and use rinse water as product. Dispose of unused pesticide as hazardous waste.
Implement storage requirements for pesticide products with guidance from the local fire department and County Agricultural Commissioner. Provide secondary containment for pesticides.
Inspection
Inspect irrigation system periodically to ensure that the right amount of water is being applied and that excessive runoff is not occurring. Minimize excess watering and repair leaks in the irrigation system as soon as they are observed.
Training
Educate and train employees on pesticide use and in pesticide application techniques to prevent pollution.
Train employees and contractors in proper techniques for spill containment and cleanup. Be sure the frequency of training takes into account the complexity of the operations and the nature of the staff.
Spill Response and Prevention
Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. Place a stockpile of spill cleanup materials, such as brooms, dustpans, and vacuum sweepers (if desired) near the storage area where it will be readily accessible. Have employees trained in spill containment and cleanup present during the loading/unloading of dangerous wastes, liquid chemicals, or other materials. Familiarize employees with the Spill Prevention Control and Countermeasure Plan. Clean up spills immediately.
Other Considerations
Alternative pest/weed controls may not be available, suitable, or effective in many cases.
Requirements
Costs
Cost will vary depending on the type and size of facility. Overall costs should be low in comparison to other BMPs.
Maintenance
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Supplemental Information
Further Detail of the BMP
Fire Sprinkler Line Flushing
Building fire sprinkler line flushing may be a source of non-stormwater runoff pollution. Th e water entering the system is usually potable water, though in some areas it may be non-potable reclaimed wastewater. There are subsequent factors that may drastically reduce the quality of the water in such systems. Black iron pipe is usually used since it is cheaper than potable piping, but it is subject to rusting and results in lower quality water. Initially, the black iron pipe has an oil coating to protect it from rusting between manufacture and installation; this will contaminate the water from the first flush but not from subsequent flushes. Nitrates, poly- phosphates and other corrosion inhibitors, as well as fire suppressants and antifreeze may be added to the sprinkler water system. Water generally remains in the sprinkler system a long time (typically a year) and between flushes may accumulate iron, manganese, lead, copper, nickel, and zinc. The water generally becomes anoxic and contains living and dead bacteria and breakdown products from chlorination. This may result in a significant BOD problem and the water often smells. Consequently dispose fire sprinkler line flush water into the sanitary sewer.
Do not allow discharge to storm drain or infiltration due to potential high levels of pollutants in fire sprinkler line water.
References and Resources
California’s Nonpoint Source Program Plan http://www.swrcb.ca.gov/nps/index.html Clark County Storm Water Pollution Control Manual
http://www.co.clark.wa.us/pubworks/bmpm an.pdf
King County Storm Water Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spcm.htm Mobile Cleaners Pilot Program: Final Report. 1997. Bay Area Stormwater Management Agencies As
sociation (BASMAA). http://www.basmaa.org/
Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Association (BASMAA).
http://www.basmaa.org/
Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvurppp.org The Storm Water Managers Resource Center http://www.stormwatercenter.net/ Parking/Storage Area Maintenance SC-43
Objectives
Cover
Contain
Educate
Reduce/Minimize
Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Description
Parking lots and storage areas can contribute a number of substances, such as trash, suspended solids, hydrocarbons, oil and grease, and heavy metals that can enter receiving waters through stormwater runoff or non-stormwater discharges. The protocols in this fact sheet are intended to prevent or reduce the discharge of pollutants from parking/storage areas and include using good housekeeping practices, following appropriate cleaning BMPs, and training employees.
Approach
The goal of this program is to ensure stormwater pollution prevention practices are considered when conducting activities on or around parking areas and storage areas to reduce potential for pollutant discharge to receiving waters. Successful implementation depends on effective training of employees on applicable BMPs and general pollution prevention strategies and objectives.
Pollution Prevention
Encourage alternative designs and maintenance strategies for impervious parking lots. (See New Development and
Redevelopment BMP Handbook)
Keep accurate maintenance logs to evaluate BMP
implementation.
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Suggested Protocols
General
Keep the parking and storage areas clean and orderly. Remove debris in a timely fashion. Allow sheet runoff to flow into biofilters (vegetated strip and swale) and/or infiltration devices.
Utilize sand filters or oleophilic collectors for oily waste in low quantities. Arrange rooftop drains to prevent drainage directly onto paved surfaces. Design lot to include semi-permeable hardscape.
Discharge soapy water remaining in mop or wash buckets to the sanitary sewer through a sink, toilet, clean-out, or wash area with drain.
Controlling Litter
Post “No Littering” signs and enforce anti-litter laws. Provide an adequate number of litter receptacles.
Clean out and cover litter receptacles frequently to prevent spillage. Provide trash receptacles in parking lots to discourage litter. Routinely sweep, shovel, and dispose of litter in the trash.
Surface Cleaning
Use dry cleaning methods (e.g., sweeping, vacuuming) to prevent the discharge of pollutants into the stormwater conveyance system if possible.
Establish frequency of public parking lot sweeping based on usage and field observations of waste accumulation.
Sweep all parking lots at least once before the onset of the wet season. Follow the procedures below if water is used to clean surfaces:
- Block the storm drain or contain runoff.
- Collect and pump wash water to the sanitary sewer or discharge to a pervious surface.
Do not allow wash water to enter storm drains.
- Dispose of parking lot sweeping debris and dirt at a landfill. Follow the procedures below when cleaning heavy oily deposits:
- Clean oily spots with absorbent materials.
- Use a screen or filter fabric over inlet, then wash surfaces. 2 of 4 California Stormwater BMP Handbook January 2003
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- Do not allow discharges to the storm drain.
- Vacuum/pump discharges to a tank or discharge to sanitary sewer. - Appropriately dispose of spilled materials and absorbents.
Surface Repair
Preheat, transfer or load hot bituminous material away from storm drain inlets. Apply concrete, asphalt, and seal coat during dry weather to prevent contamination from contacting stormwater runoff.
Cover and seal nearby storm drain inlets where applicable (with waterproof material or mesh) and manholes before applying seal coat, slurry seal, etc. Leave covers in place until job is complete and all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal. Use only as much water as necessary for dust control, to avoid runoff. Catch drips from paving equipment that is not in use with pans or absorbent material placed under the machines. Dispose of collected material and absorbents properly.
Inspection
Have designated personnel conduct inspections of parking facilities and stormwater conveyance systems associated with parking facilities on a regular basis. Inspect cleaning equipment/sweepers for leaks on a regular basis.
Training
Provide regular training to field employees and/or contractors regarding cleaning of paved areas and proper operation of equipment.
Train employees and contractors in proper techniques for spill containment and cleanup.
Spill Response and Prevention
Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. Place a stockpile of spill cleanup materials where it will be readily accessible or at a central location.
Clean up fluid spills immediately with absorbent rags or material. Dispose of spilled material and absorbents properly.
Other Considerations
Limitations related to sweeping activities at large parking facilities may include high equipment costs, the need for sweeper operator training, and the inability of current sweeper technology to remove oil and grease.
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Requirements
Costs
Cleaning/sweeping costs can be quite large. Construction and maintenance of stormwater structural co
ntrols can be quite expensive as well.
Maintenance
Sweep parking lot regularly to minimize cleaning with water. Clean out oil/water/sand separators regularly, especially after heavy storms. Clean parking facilities regularly to prevent accumulated wastes and pollutants from being discharged into conveyance systems during rainy conditions.
Supplemental Information
Further Detail of the BMP
Surface Repair
Apply concrete, asphalt, and seal coat during dry weather to prevent contamination from contacting s
tormwater runoff. Where applicable, cover and seal nearby storm drain inlets (with waterproof material or mesh) and manholes before applying seal coat, slurry seal, etc. Leave covers in place until job is complete and all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal.
Only use only as much water as is necessary for dust control to avoid runoff.
References and Resources
California’s Nonpoint Source Program Plan http://www.swrcb.ca.gov/nps/index.html Clark County Storm Water Pollution Control Manual
http://www.co.clark.wa.us/pubworks/bmpm
an.pdf
King County Storm Water Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spcm.htm Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Association (BASMAA).
http://www.basmaa.org/
Oregon Association of Clean Water Agencies. Oregon Mu nicipal Stormwater Toolbox for Maintenance Practices. June 1998.
Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvurppp.org The Storm Water Managers Resource Center http://www.stormwatercenter.net/ Drainage System Maintenance SC-44
Objectives
Cover
Contain
Educate
Reduce/Minimize
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Description
As a consequence of its function, the stormwater conveyance system collects and transports urban runoff and stormwater that may contain certain pollutants. The protocols in this fact sheet are intended to reduce pollutants reaching receiving waters through proper conveyance system operation and maintenance.
Approach
Pollution Prevention
Maintain catch basins, stormwater inlets, and other stormwater conveyance structures on a regular basis to remove pollutants, reduce high pollutant concentrations during the first flush of storms, prevent clogging of the downstream conveyance system, restore catch basins’ sediment trapping capacity, and ensure the system functions properly hydraulically to avoid flooding.
Suggested Protocols
Catch Basins/Inlet Structures
Staff should regularly inspect facilities to ensure compliance with the following:
- Immediate repair of any deterioration threatening
structural integrity.
- Cleaning before the sump is 40% full. Catch basins
should be cleaned as frequently as needed to meet this
standard.
- Stenciling of catch basins and inlets (see SC34 Waste Handling and Disposal).
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Clean catch basins, storm drain inlets, and other conveyance structures before the wet season to remove sediments and debris accumulated during the summer. Conduct inspections more frequently during the wet season for problem areas where sediment or trash accumulates more often. Clean and repair as needed. Keep accurate logs of the number of catch basins cleaned. Store wastes collected from cleaning activities of the drainage system in appropriate containers or temporary storage sites in a manner that prevents discharge to the storm drain.
Dewater the wastes if necessary with outflow into the sanitary sewer if permitted. Water should be treated with an appropriate filtering device prior to discharge to the sanitary sewer. If discharge to the sanitary sewer is not allowed, water should be pumped or vacuumed to a tank and properly disposed. Do not dewater near a storm drain or stream.
Storm Drain Conveyance System
Locate reaches of storm drain with deposit problems and develop a flushing schedule that keeps the pipe clear of excessive buildup.
Collect and pump flushed effluent to the sanitary sewer for treatment whenever possible.
Pump Stations
Clean all storm drain pump stations prior to the wet season to remove silt and trash. Do not allow discharge to reach the storm drain system when cleaning a storm drain pump station or other facility.
Conduct routine maintenance at each pump station.
Inspect, clean, and repair as necessary all outlet structures prior to the wet season.
Open Channel
Modify storm channel characteristics to improve channel hydraulics, increase pollutant removals, and enhance channel/creek aesthetic and habitat value. Conduct channel modification/improvement in accordance with existing laws. Any person, government agency, or public utility proposing an activity that will change the natural (emphasis added) state of any river, stream, or lake in California, must enter into a Steam or Lake Alteration Agreement with the Department of Fish and Game. The developer-applicant should also contact local governments (city, county, special districts), other state agencies (SWRCB, RWQCB, Department of Forestry, Department of Water Resources), and Federal Corps of Engineers and USFWS.
Illicit Connections and Discharges
Look for evidence of illegal discharges or illicit connections during routine maintenance of conveyance system and drainage structures:
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Drainage System Maintenance SC-44
- Are there any odors associated with the drainage system? - Record locations of apparent illegal discharges/illicit connections? - Track flows back to potential dischargers and conduct aboveground inspections. This can be done through visual inspection of upgradient manholes or alternate techniques including zinc chloride smoke testing, fluorometric dye testing, physical inspection testing, or television camera inspection.
- Eliminate the discharge once the origin of flow is established. Stencil or demarcate storm drains, where applicable, to prevent illegal disposal of pollutants.
Storm drain inlets should have messages such as “Dump No Waste Drains to Stream” stenciled next to them to warn against ignorant or intentional dumping of pollutants into the storm drainage system.
Refer to fact sheet SC-10 Non-Stormwater Discharges.
Illegal Dumping
Inspect and clean up hot spots and other storm drainage areas regularly where illegal dumping and disposal occurs.
Establish a system for tracking incidents. The system should be designed to identify the following:
- Illegal dumping hot spots
- Types and quantities (in some cases) of wastes
- Patterns in time of occurrence (time of day/night, month, or year) - Mode of dumping (abandoned containers, “midnight dumping” from moving vehicles, direct dumping of materials, accidents/spills)
- Responsible parties
Post “No Dumping” signs in problem areas with a phone number for reporting dumping and disposal. Signs should also indicate fines and penalties for illegal dumping. Refer to fact sheet SC-10 Non-Stormwater Discharges.
Training
Train crews in proper maintenance activities, including record keeping and disposal. Allow only properly trained individuals to handle hazardous materials/wastes. Have staff involved in detection and removal of illicit connections trained in the following:
- OSHA-required Health and Safety Training (29 CFR 1910.120) plus annual refresher training (as needed).
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- OSHA Confined Space Entry training (Cal-OSHA Confined Space, Title 8 and Federal OSHA 29 CFR 1910.146).
- Procedural training (field screening, sampling, smoke/dye testing, TV inspection).
Spill Response and Prevention
Investigate all reports of spills, leaks, and/or illegal dumping promptly. Clean up all spills and leaks using “dry” methods (with absorbent materials and/or rags) or dig up, remove, and properly dispose of contaminated soil. Refer to fact sheet SC-11 Spill Prevention, Control, and Cleanup.
Other Considerations (Limitations and Regulations)
Clean-up activities may create a slight disturbance for local aquatic species. Access to items and material on private property may be limited. Trade-offs may exist between channel hydraulics and water quality/riparian habitat. If storm channels or basins are recognized as wetlands, many activities, including maintenance, may be subject to regulation and permitting.
Storm drain flushing is most effective in small diameter pipes (36-inch diameter pipe or less, depending on water supply and sediment collection capacity). Other considerations associated with storm drain flushing may include the availability of a water source, finding a downstream area to collect sediments, liquid/sediment disposal, and prohibition against disposal of flushed effluent to sanitary sewer in some areas. Regulations may include adoption of substantial penalties for illegal dumping and disposal. Local municipal codes may include sections prohibiting discharge of soil, debris, refuse, hazardous wastes, and other pollutants into the storm drain system.
Requirements
Costs
An aggressive catch basin cleaning program could require a significant capital and O&M budget.
The elimination of illegal dumping is dependent on the availability, convenience, and cost of alternative means of disposal. The primary cost is for staff time. Cost depends on how aggressively a program is implemented. Other cost considerations for an illegal dumping program include:
- Purchase and installation of signs.
- Rental of vehicle(s) to haul illegally-disposed items and material to landfills. - Rental of heavy equipment to remove larger items (e.g., car bodies) from channels. - Purchase of landfill space to dispose of illegally-dumped items and material. 4 of 6 California Stormwater BMP Handbook January 2003
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Methods used for illicit connection detection (smoke testing, dye testing, visual inspection, and flow monitoring) can be costly and time-consuming. Site-specific factors, such as the level of impervious area, the density and ages of buildings, and type of land use will determine the level of investigation necessary.
Maintenance
Two-person teams may be required to clean catch basins with vactor trucks. Teams of at least two people plus administrative personnel are required to identify illicit discharges, depending on the complexity of the storm sewer system. Arrangements must be made for proper disposal of collected wastes. Technical staff are required to detect and investigate illegal dumping violations.
Supplemental Information
Further Detail of the BMP
Storm Drain Flushing
Flushing is a common maintenance activity used to improve pipe hydraulics and to remove pollutants in storm drainage systems. Flushing may be designed to hydraulically convey accumulated material to strategic locations, such as an open channel, another point where flushing will be initiated, or the sanitary sewer and the treatment facilities, thus preventing resuspension and overflow of a portion of the solids during storm events. Flushing prevents “plug flow” discharges of concentrated pollutant loadings and sediments. Deposits can hinder the designed conveyance capacity of the storm drain system and potentially cause backwater conditions in severe cases of clogging.
Storm drain flushing usually takes place along segments of pipe with grades that are too flat to maintain adequate velocity to keep particles in suspension. An upstream manhole is selected to place an inflatable device that temporarily plugs the pipe. Further upstream, water is pumped into the line to create a flushing wave. When the upstream reach of pipe is sufficiently full to cause a flushing wave, the inflated device is rapidly deflated with the assistance of a vacuum pump, thereby releasing the backed up water and resulting in the cleaning of the storm drain segment.
To further reduce impacts of stormwater pollution, a second inflatable device placed well downstream may be used to recollect the water after the force of the flushing wave has dissipated. A pump may then be used to transfer the water and accumulated material to the sanitary sewer for treatment. In some cases, an interceptor structure may be more practical or required to recollect the flushed waters.
It has been found that cleansing efficiency of periodic flush waves is dependent upon flush volume, flush discharge rate, sewer slope, sewer length, sewer flow rate, sewer diameter, and population density. As a rule of thumb, the length of line to be flushed should not exceed 700 feet. At this maximum recommended length, the percent removal efficiency ranges between 65- 75% for organics and 55-65% for dry weather grit/inorganic material. The percent removal efficiency drops rapidly beyond that. Water is commonly supplied by a water truck, but fire hydrants can also supply water. To make the best use of water, it is recommended that reclaimed water be used or that fire hydrant line flushing coincide with storm sewer flushing.
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References and Resources
California’s Nonpoint Source Program Plan http://www.swrcb.ca.gov/nps/index.html Clark County Storm Water Pollution Control Manual
http://www.co.clark.wa.us/pubworks/bmpm an.pdf
Ferguson, B.K. 1991. Urban Stream Reclamation, p. 324-322, Journal of Soil and Water Conservation.
King County Storm Water Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spcm.htm Oregon Association of Clean Water Agencies. Oregon Mu nicipal Stormwater Toolbox for Maintenance Practices. June 1998.
Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvurppp.org
The Storm Water Managers Resource Center http://www.stormwatercenter.net United States Environmental Protection Agency (USEPA). 2002. Pollution Prevention/Good Housekeeping for Muni
cipal Operations Storm Drain System Cleaning. On line:
http://www.epa.gov/npdes/menuofbmps/poll_16 .htm
Site Design & Landscape Planning SD-10
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Description
Each project site possesses unique topographic, hydrologic, and vegetative features, some of which are more suitable for development than others. Integrating and incorporating appropriate landscape planning methodologies into the project design is the most effective action that can be done to minimize surface and groundwater contamination from stormwater.
Approach
Landscape planning should couple consideration of land suitability for urban uses with consideration of community goals and projected growth. Project plan designs should conserve natural areas to the extent possible, maximize natural water storage and infiltration opportunities, and protect slopes and channels.
Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment.
Design Considerations
Design requirements for site design and landscapes planning should conform to applicable standards and specifications of agencies with jurisdiction and be consistent with applicable General Plan and Local Area Plan policies.
Design Objectives
; Maximize Infiltration
; Provide Retention
; Slow Runoff
; Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
SD-10 Site Design & Landscape Planning
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Designing New Installations
Begin the development of a plan for the landscape unit with attention to the following general principles:
Formulate the plan on the basis of clearly articulated community goals. Carefully identify conflicts and choices between retaining and protecting desired resources and community growth.
Map and assess land suitability for urban uses. Include the following landscape features in the assessment: wooded land, open unwooded land, steep slopes, erosion-prone soils, foundation suitability, soil suitability for waste disposal, aquifers, aquifer recharge areas, wetlands, floodplains, surface waters, agricultural lands, and various categories of urban land use. When appropriate, the assessment can highlight outstanding local or regional resources that the community determines should be protected (e.g., a scenic area, recreational area, threatened species habitat, farmland, fish run). Mapping and assessment should recognize not only these resources but also additional areas needed for their sustenance.
Project plan designs should conserve natural areas to the extent possible, maximize natural water storage and infiltration opportunities, and protect slopes and channels.
Conserve Natural Areas during Landscape Planning
If applicable, the following items are required and must be implemented in the site layout during the subdivision design and approval process, consistent with applicable General Plan and Local Area Plan policies:
Cluster development on least-sensitive portions of a site while leaving the remaining land in a natural undisturbed condition.
Limit clearing and grading of native vegetation at a site to the minimum amount needed to build lots, allow access, and provide fire protection.
Maximize trees and other vegetation at each site by planting additional vegetation, clustering tree areas, and promoting the use of native and/or drought tolerant plants. Promote natural vegetation by using parking lot islands and other landscaped areas. Preserve riparian areas and wetlands.
Maximize Natural Water Storage and Infiltration Opportunities Within the Landscape Unit Promote the conservation of forest cover. Building on land that is already deforested affects basin hydrology to a lesser extent than converting forested land. Loss of forest cover reduces interception storage, detention in the organic forest floor layer, and water losses by evapotranspiration, resulting in large peak runoff increases and either their negative effects or the expense of countering them with structural solutions. Maintain natural storage reservoirs and drainage corridors, including depressions, areas of permeable soils, swales, and intermittent streams. Develop and implement policies and Site Design & Landscape Planning SD-10
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regulations to discourage the clearing, filling, and channelization of these features. Utilize them in drainage networks in preference to pipes, culverts, and engineered ditches. Evaluating infiltration opportunities by referring to the stormwater management manual for the jurisdiction and pay particular attention to the selection criteria for avoiding groundwater contamination, poor soils, and hydrogeological conditions that cause these facilities to fail. If necessary, locate developments with large amounts of impervious surfaces or a potential to produce relatively contaminated runoff away from groundwater recharge areas.
Protection of Slopes and Channels during Landscape Design Convey runoff safely from the tops of slopes.
Avoid disturbing steep or unstable slopes.
Avoid disturbing natural channels.
Stabilize disturbed slopes as quickly as possible.
Vegetate slopes with native or drought tolerant vegetation. Control and treat flows in landscaping and/or other controls prior to reaching existing natural drainage systems.
Stabilize temporary and permanent channel crossings as quickly as possible, and ensure that increases in run-off velocity and frequency caused by the project do not erode the channel. Install energy dissipaters, such as riprap, at the outlets of new storm drains, culverts, conduits, or channels that enter unlined channels in accordance with applicable specifications to minimize erosion. Energy dissipaters shall be installed in such a way as to minimize impacts to receiving waters.
Line on-site conveyance channels where appropriate, to reduce erosion caused by increased flow velocity due to increases in tributary impervious area. The first choice for linings should be grass or some other vegetative surface, since these materials not only reduce runoff velocities, but also provide water quality benefits from filtration and infiltration. If velocities in the channel are high enough to erode grass or other vegetative linings, riprap, concrete, soil cement, or geo-grid stabilization are other alternatives. Consider other design principles that are comparable and equally effective.
Redeveloping Existing Installations
Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define “redevelopment” in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of “ redevelopment” must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies, the steps outlined under “designing new installations” above should be followed.
SD-10 Site Design & Landscape Planning
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Redevelopment may present significant opportunity to add features which had not previously been implemented. Examples include incorporation of depressions, areas of permeable soils, and swales in newly redeveloped areas. While some site constraints may exist due to the status of already existing infrastructure, opportunities should not be missed to maximize infiltration, slow runoff, reduce impervious areas, disconnect directly connected impervious areas.
Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002.
Stormwater Management Manual for Western Washington, Washington State Department of Ecology, August 2001.
Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002.
Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003.
Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002.
Roof Runoff Controls SD-11
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Description
Various roof runoff controls are available to address stormwater that drains off rooftops. The objective is to reduce the total volume and rate of runoff from individual lots, and retain the pollutants on site that may be picked up from roofing materials and atmospheric deposition. Roof runoff controls consist of directing the roof runoff away from paved areas and mitigating flow to the storm drain system through one of several general approaches: cisterns or rain barrels; dry wells or infiltration trenches; pop-up emitters, and foundation planting. The first three approaches require the roof runoff to be contained in a gutter and downspout system. Foundation planting provides a vegetated strip under the drip line of the roof.
Approach
Design of individual lots for single-family homes as well as lots for higher density residential and commercial structures should consider site design provisions for containing and infiltrating roof runoff or directing roof runoff to vegetative swales or buffer areas. Retained water can be reused for watering gardens, lawns, and trees. Benefits to the environment include reduced demand for potable water used for irrigation, improved stormwater quality, increased groundwater recharge, decreased runoff volume and peak flows, and decreased flooding potential.
Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment.
Design Considerations
Designing New Installations
Cisterns or Rain Barrels
One method of addressing roof runoff is to direct roof downspouts to cisterns or rain barrels. A cistern is an above ground storage vessel with either a manually operated valve or a permanently open outlet. Roof runoff is temporarily stored and then released for irrigation or infiltration between storms. The number of rain Design Objectives
; Maximize Infiltration
; Provide Retention
; Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
; Contain Pollutants
Collect and Convey
Rain Garden
SD-11 Roof Runoff Controls
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barrels needed is a function of the rooftop area. Some low impact developers recommend that every house have at least 2 rain barrels, with a minimum storage capacity of 1000 liters. Roof barrels serve several purposes including mitigating the first flush from the roof which has a high volume, amount of contaminants, and thermal load. Several types of rain barrels are commercially available. Consideration must be given to selecting rain barrels that are vector proof and childproof. In addition, some barrels are designed with a bypass valve that filters out grit and other contaminants and routes overflow to a soak-away pit or rain garden.
If the cistern has an operable valve, the valve can be closed to store stormwater for irrigation or infiltration between storms. This system requires continual monitoring by the resident or grounds crews, but provides greater flexibility in water storage and metering. If a cistern is provided with an operable valve and water is stored inside for long periods, the cistern must be covered to prevent mosquitoes from breeding.
A cistern system with a permanently open outlet can also provide for metering stormwater runoff. If the cistern outlet is significantly smaller than the size of the downspout inlet (say ¼ to ½ inch diameter), runoff will build up inside the cistern during storms, and will empty out slowly after peak intensities subside. This is a feasible way to mitigate the peak flow increases caused by rooftop impervious land coverage, especially for the frequent, small storms.
Dry wells and Infiltration Trenches
Roof downspouts can be directed to dry wells or infiltration trenches. A dry well is constructed by excavating a hole in the ground and filling it with an open graded aggregate, and allowing the water to fill the dry well and infiltrate after the storm event. An underground connection from the downspout conveys water into the dry well, allowing it to be stored in the voids. To minimize sedimentation from lateral soil movement, the sides and top of the stone storage matrix can be wrapped in a permeable filter fabric, though the bottom may remain open. A perforated observation pipe can be inserted vertically into the dry well to allow for inspection and maintenance.
In practice, dry wells receiving runoff from single roof downspouts have been successful over long periods because they contain very little sediment. They must be sized according to the amount of rooftop runoff received, but are typically 4 to 5 feet square, and 2 to 3 feet deep, with a minimum of 1-foot soil cover over the top (maximum depth of 10 feet).
To protect the foundation, dry wells must be set away from the building at least 10 feet. They must be installed in solids that accommodate infiltration. In poorly drained soils, dry wells have very limited feasibility.
Infiltration trenches function in a similar manner and would be particularly effective for larger roof areas. An infiltration trench is a long, narrow, rock-filled trench with no outlet that receives stormwater runoff. These are described under Treatment Controls.
Pop-up Drainage Emitter
Roof downspouts can be directed to an underground pipe that daylights some distance from the building foundation, releasing the roof runoff through a pop-up emitter. Similar to a pop-up irrigation head, the emitter only opens when there is flow from the roof. The emitter remains flush to the ground during dry periods, for ease of lawn or landscape maintenance.
Roof Runoff Controls SD-11
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Foundation Planting
Landscape planting can be provided around the base to allow increased opportunities for stormwater infiltration and protect the soil from erosion caused by concentrated sheet flow coming off the roof. Foundation plantings can reduce the physical impact of water on the soil and provide a subsurface matrix of roots that encourage infiltration. These plantings must be sturdy enough to tolerate the heavy runoff sheet flows, and periodic soil saturation.
Redeveloping Existing Installations
Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define “redevelopment” in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of “ redevelopment” must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies, the steps outlined under “designing new installations” above should be followed.
Supplemental Information
Examples
City of Ottawa’s Water Links Surface –Water Quality Protection Program City of Toronto Downspout Disconnection Program
City of Boston, MA, Rain Barrel Demonstration Program Other Resources
Hager, Marty Catherine, Stormwater, “Low-Impact Development”, January/February 2003. www.stormh2o.com
Low Impact Urban Design Tools, Low Impact Development Design Center, Beltsville, MD. www.lid-stormwater.net
Start at the Source, Bay Area Stormwater Management Agencies Association, 1999 Edition Efficient Irrigation SD-12
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Description
Irrigation water provided to landscaped areas may result in excess irrigation water being conveyed into stormwater drainage systems.
Approach
Project plan designs for development and redevelopment should include application methods of irrigation water that minimize runoff of excess irrigation water into the stormwater conveyance system.
Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment. (Detached residential single-family homes are typically excluded from this requirement.)
Design Considerations
Designing New Installations
The following methods to reduce excessive irrigation runoff should be considered, and incorporated and implemented where determined applicable and feasible by the Permittee:
Employ rain-triggered shutoff devices to prevent irrigation after precipitation. Design irrigation systems to each landscape area’s specific water requirements. Include design featuring flow reducers or shutoff valves triggered by a pressure drop to control water loss in the event of broken sprinkler heads or lines.
Implement landscape plans consistent with County or City water conservation resolutions, which may include provision of water sensors, programmable irrigation times (for short cycles), etc.
Design Objectives
; Maximize Infiltration
; Provide Retention
; Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
SD-12 Efficient Irrigation
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Design timing and application methods of irrigation water to minimize the runoff of excess irrigation water into the storm water drainage system.
Group plants with similar water requirements in order to reduce excess irrigation runoff and promote surface filtration. Choose plants with low irrigation requirements (for example, native or drought tolerant species). Consider design features such as:
- Using mulches (such as wood chips or bar) in planter areas without ground cover to minimize sediment in runoff
- Installing appropriate plant materials for the location, in accordance with amount of sunlight and climate, and use native plant materials where possible and/or as recommended by the landscape architect
- Leaving a vegetative barrier along the property boundary and interior watercourses, to act as a pollutant filter, where appropriate and feasible - Choosing plants that minimize or eliminate the use of fertilizer or pesticides to sustain growth
Employ other comparable, equally effective methods to reduce irrigation water runoff.
Redeveloping Existing Installations
Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define “redevelopment” in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of “ redevelopment” must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies, the steps outlined under “designing new installations” above should be followed.
Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002.
Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002.
Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003.
Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002.
Storm Drain Signage SD-13
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Description
Waste materials dumped into storm drain inlets can have severe impacts on receiving and ground waters. Posting notices regarding discharge prohibitions at storm drain inlets can prevent waste dumping. Storm drain signs and stencils are highly visible source controls that are typically placed directly adjacent to storm drain inlets.
Approach
The stencil or affixed sign contains a brief statement that prohibits dumping of improper materials into the urban runoff conveyance system. Storm drain messages have become a popular method of alerting the public about the effects of and the prohibitions against waste disposal.
Suitable Applications
Stencils and signs alert the public to the destination of pollutants discharged to the storm drain.
Signs are appropriate in residential, commercial, and industrial areas, as well as any other area where contributions or dumping to storm drains is likely.
Design Considerations
Storm drain message markers or placards are recommended at all storm drain inlets within the boundary of a development project. The marker should be placed in clear sight facing toward anyone approaching the inlet from either side. All storm drain inlet locations should be identified on the development site map.
Designing New Installations
The following methods should be considered for inclusion in the project design and show on project plans:
Provide stenciling or labeling of all storm drain inlets and catch basins, constructed or modified, within the project area with prohibitive language. Examples include “NO DUMPING Design Objectives
Maximize Infiltration
Provide Retention
Slow Runoff
Minimize Impervious Land
Coverage
; Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
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– DRAINS TO OCEAN” and/or other graphical icons to discourage illegal dumping. Post signs with prohibitive language and/or graphical icons, which prohibit illegal dumping at public access points along channels and creeks within the project area.
Note - Some local agencies have approved specific signage and/or storm drain message placards for use. Consult local agency stormwater staff to determine specific requirements for placard types and methods of application.
Redeveloping Existing Installations
Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define “redevelopment” in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. If the project meets the definition of “redevelopment”, then the requirements stated under “ designing new installations” above should be included in all project design plans.
Additional Information
Maintenance Considerations
Legibility of markers and signs should be maintained. If required by the agency with jurisdiction over the project, the owner/operator or homeowner’s association should enter into a maintenance agreement with the agency or record a deed restriction upon the property title to maintain the legibility of placards or signs.
Placement
Signage on top of curbs tends to weather and fade.
Signage on face of curbs tends to be worn by contact with vehicle tires and sweeper brooms.
Supplemental Information
Examples
Most MS4 programs have storm drain signage programs. Some MS4 programs will provide stencils, or arrange for volunteers to stencil storm drains as part of their outreach program.
Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002.
Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002.
Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003.
Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002.
Trash Storage Areas SD-32
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Description
Trash storage areas are areas where a trash receptacle (s) are located for use as a repository for solid wastes. Stormwater runoff from areas where trash is stored or disposed of can be polluted. In addition, loose trash and debris can be easily transported by water or wind into nearby storm drain inlets, channels, and/or creeks. Waste handling operations that may be sources of stormwater pollution include dumpsters, litter control, and waste piles.
Approach
This fact sheet contains details on the specific measures required to prevent or reduce pollutants in stormwater runoff associated with trash storage and handling. Preventative measures including enclosures, containment structures, and impervious pavements to mitigate spills, should be used to reduce the likelihood of contamination.
Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment. (Detached residential single-family homes are typically excluded from this requirement.)
Design Considerations
Design requirements for waste handling areas are governed by Building and Fire Codes, and by current local agency ordinances and zoning requirements. The design criteria described in this fact sheet are meant to enhance and be consistent with these code and ordinance requirements.
Hazardous waste should be handled in accordance with legal requirements established in Title 22, California Code of Regulation.
Wastes from commercial and industrial sites are typically hauled by either public or commercial carriers that may have design or access requirements for waste storage areas. The design criteria in this fact sheet are recommendations and are not intended to be in conflict with requirements established by the waste hauler. The waste hauler should be contacted prior to the design of your site trash collection areas. Conflicts or issues should be discussed with the local agency.
Designing New Installations
Trash storage areas should be designed to consider the following structural or treatment control BMPs:
Design trash container areas so that drainage from adjoining roofs and pavement is diverted around the area(s) to avoid run-on. This might include berming or grading the waste handling area to prevent run-on of stormwater.
Make sure trash container areas are screened or walled to prevent off-site transport of trash.
Design Objectives
Maximize Infiltration
Provide Retention
Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
; Contain Pollutants
Collect and Convey
SD-32 Trash Storage Areas
2 of 2 California Stormwater BMP Handbook January 2003
New Development and Redevelopment
www.cabmphandbooks.com
Use lined bins or dumpsters to reduce leaking of liquid waste. Provide roofs, awnings, or attached lids on all trash containers to minimize direct precipitation and prevent rainfall from entering containers. Pave trash storage areas with an impervious surface to mitigate spills. Do not locate storm drains in immediate vicinity of the trash storage area. Post signs on all dumpsters informing users that hazardous materials are not to be disposed of therein.
Redeveloping Existing Installations
Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define “redevelopment” in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of “ redevelopment” must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies, the steps outlined under “designing new installations” above should be followed.
Additional Information
Maintenance Considerations
The integrity of structural elements that are subject to damage (i.e., screens, covers, and signs) must be maintained by the owner/operator. Maintenance agreements between the local agency and the owner/operator may be required. Some agencies will require maintenance deed restrictions to be recorded of the property title. If required by the local agency, maintenance agreements or deed restrictions must be executed by the owner/operator before improvement plans are approved.
Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002.
Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002.
Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003.
Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002.
Treatment Control BMPs
Drain Insert MP-52
January 2003 California Stormwater BMP Handbook 1 of 1
Industrial and Commercial
www.cabmphandbooks.com
General Description
Drain inserts are manufactured filters or fabric placed in a drop inlet to remove sediment and debris. There are a multitude of inserts of various shapes and configurations, typically falling into one of three different groups: socks, boxes, and trays. The sock consists of a fabric, usually constructed of polypropylene. The fabric may be attached to a frame or the grate of the inlet holds the sock. Socks are meant for vertical (drop) inlets. Boxes are constructed of plastic or wire mesh. Typically a polypropylene “bag” is placed in the wire mesh box. The bag takes the form of the box. Most box products are one box; that is, the setting area and filtration through media occur in the same box. Some products consist of one or more trays or mesh grates. The trays may hold different types of media. Filtration media vary by manufacturer. Types include polypropylene, porous polymer, treated cellulose, and activated carbon.
Inspection/Maintenance Considerations
Washout problems increase with rain intensity. Susceptibility of accumulated sediments to be re-suspended at low flow rates, can be corrected with an energy dissipater between gate and treatment areas.
Maintenance Concerns,
Objectives, and Goals
Sediment Removal
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Removal Effectiveness
See New Development and
Redevelopment Handbook-Section 5.
Inspection Activities Suggested
Frequency
Inspect for sediment buildup and proper
functioning.
At the beginning of the
wet season and after
significant storms
Verify that stormwater enters the unit and
does not leak around the perimeter.
After construction.
Maintenance Activities Suggested
Frequency
Remove sediment as needed. At the beginning of the
wet season and as
necessary
Educational Materials
Stormwater Pollution Prevention
Best Management Practices for Homeowner’s Associations, Property Managers and Property Owners
Your Guide To Maintaining Water
Friendly Standards In Your Community
sbcountystormwater.org
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Commercial Trash Enclosures 1
Hazar
dous Wast e 2
Working Outdoors & Handling Spills 4
Commer
cial Landscape 5
Sidew
alk, Plaza, Entry Monument & Fountain Maintenanc e 6
Equipment Maintenance & Repair 10
Pool Maintenanc e 14
Paint 16
Vehicle Maintenanc e 17
Pet Waste Disposal 18
Get In Touch With Us Online 19
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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COMMERCIAL TRASH ENCLOSURES
In San Bernardino County, stormwater pollution is caused by food waste, landscape waste, chemicals and other debris that are washed into storm drains and end up in our waterways - untreated! You can be part of the solution by maintaining a water-friendly trash enclosure.
To report illegal dumping (877-WASTE18) or to find a household hazardous waste facility (800-OILY CAT): sbcountystormwater.org
TO KEEP OUR WATERWAYS CLEAN
FOLLOW THESE REQUIREMENTS
Trash enclosures, such as those found in commercial and apartment complexes, typically contain materials that are intended to find their way to a landfill or a recycling facility.
These materials are NOT meant to go into our local lakes and rivers.
THANK YOU FOR HELPING TO KEEP SAN BERNARDINO COUNTY CLEAN AND HEALTHY!
PROTECT WATER QUALITY BY FOLLOWING THESE SIMPLE STEPS
• Paint
• Grease, fats and used oils
• Batteries, electronics
and fluorescent lights
KEEP TOXICS OUTCLOSE THE LID
Prevent rain from entering
the bin in order to avoid
leakage of polluted water
runoff
PUT TRASH INSIDE
Place trash inside the bin
(preferably in sealed bags)
COMMERCIAL TRASH ENCLOSURES
SOME ADDITIONAL GUIDELINES, INCLUDE
SWEEP FREQUENTLY
Sweep trash enclosure areas
frequently, instead of hosing
them down, to prevent polluted
water from flowing into the
streets and storm drains.
FIX LEAKS
Address trash bin leaks
immediately by using dry clean
up methods and report to your
waste hauler to receive a
replacement.
CONSTRUCT ROOF
Construct a solid cover roof over the
existing trash enclosure structure to
prevent rainwater from coming into
contact with trash and garbage.
Check with your local City/County
for Building Codes.
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In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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HAZARDOUS WASTE
Waste Type and Cost
There is a small handling fee involved in the
collection of hazardous waste from your
business. Disposal costs depend on the type
of waste.
Aerosols $1.29/lb.
Automobile motor oil $. 73/gal.
Anti-freeze $1.57/gal.
Contaminated oil $4.48/gal.
Car batteries $.62/ea.
Corrosive liquids, solids $2.80/lb.
Flammable solids, liquids $1.57/lb.
Late x P a i n t $.73/lb.
Mercur y $10.08/lb.
NiCad/Alkaline Batteries $2.13/lb.
Oil Base Paints $1.00/lb.
Oil Filters $.56/ea.
Oxidizers $9.63/lb.
PCB Ballasts $5.94/lb.
Pesticides (most) $2.91/lb.
Photo/f_ixer, developer $4.31/ga l.
Television & Monitors $11.20/ea.
Additional Handling $138.00/hr.
*Rates subject to change without notice*
WE CANNOT ACCEPT
Radioactives
Water reactives
Explosives
Compressed gas cylinders
Medical or biohaza rdous waste
Asbestos
Remediation wastes
CESQG PROGRAM
Conditionally Exempt Small Quantity Generator
WHAT IS A CESQG?
Businesses that generate 27 gallons or 220 lbs. of
hazardous waste, or 2.2 lbs. of extremely hazardous
waste per month are called “Conditionally Exempt
Small Quantity Generators, ” or CESQGs. San Bernardino
County Household Hazardous Program provides
waste management services to CESQG businesses.
The most common CESQGs in San Bernardino County
are painters, print shops, auto shops, builders,
agricultural operators and property managers, but
there are many others. When you call, be ready to
describe the types and amounts of waste your
business generates in a typical month. If you generate
hazardous waste on a regular basis, you must:
• Register with San Bernardino County Fire Department
(909) 386-8401 as a hazardous waste generator.
• To obtain an EPA ID# and application form from the
State visit www.dtsc.ca.gov.
• Manage hazardous waste in accordance with all
applicable local, state and federal laws and regulations.
HOW DO I GET SERVICE?
To arrange an appointment for the CESQG Program,
call 1-800-OILY CAT or 909-382-5401. Be ready to
describe the type and amount of hazardous waste
your business is ready to dispose of, and the types
and size(s) of containers that the waste is in.
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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HAZARDOUS WASTE
WHY IS THE FIRE DEPARTMENT
COLLECTING HAZARDOUS WASTE?
Small Quantity Generators often have difficulty
disposing of small quantities of hazardous waste.
Hazardous waste companies usually have a
minimum amount of waste that they will pick up,
or charge a minimum fee for service. Typically, the
minimum fee exceeds the cost of disposal for the
hazardous waste. This leaves the small quantity
generator in a difficult situation. Some respond
by storing hazardous waste until it becomes
economical for the hazardous waste transporter to
pick it up, putting the business out of compliance
by exceeding regulatory accumulation time
limits. Other businesses simply store their
hazardous wastes indefinitely, creating an unsafe
work environment and exceeding accumulation
time limits. Yet other businesses attempt to illegally
dispose of their waste at household hazardous
waste collection facilities. These facilities are not
legally permitted to accept commercial wastes,
nor are prepared to provide legal documentation
for commercial hazardous waste disposal. In
answer to the problems identified above, the San
Bernardino County Fire Department Household
Hazardous Program instituted the Conditionally
Exempt Small Quantity Generator Program.
PAYMENT FOR SERVICES
The CESQG Program will prepare an invoice
for your business at the time of service. You can
pay at the time of service with cash or a check, or
you can mail your payment to the Fire Department
within 30 days. Please note that we do not accept
credit card payments. The preferred method of
payment is to handle payment at time of service.
Additional charges may apply for accounts not
paid within 30 days.
ARE THERE ANY OTHER WAYS THAT I CAN SAVE
MONEY ON HAZARDOUS WASTE DISPOSAL?
Yes! First, start by reducing the amount of waste
that you produce by changing processes or process
chemicals, at your business. Next, examine if there
is a way that you can recycle your waste back into
your processes. Network with similar businesses
or trade associations for waste minimization and
pollution prevention solutions.
WHAT IF YOUR BUSINESS DOES NOT QUALIFY?
Call the San Bernardino County Fire Department
Field Services Division for assistance with
hazardous waste management at 909-386-8401.
If you reduce the amount of waste you generate
each month to 27 gallons or less, you may qualify
in the future.
WHAT HAPPENS TO YOUR HAZARDOUS WASTE?
Hazardous waste collected by the CESQG
Program is transported to a state permitted
processing facility in San Bernardino. The
waste is further processed at this point and
packaged for off-site recycling (oil filters, oil,
latex paint, antifreeze, and batteries) or destructive
incineration (pesticides, corrosives, flammables,
oil based paint).
San Bernardino County Fire Department
CESQG Program
2824 East “W” Street
San Bernardino, CA 92415-0799
Phone: 909-382-5401
Fax: 909-382-5413
www.sbcfire.org/hazmat/hhw.asp
Email: [email protected]
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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WORKING OUTDOORS & HANDLING SPILLS
Clean waterways and the health of your neighborhood is a team effort. Be part of the clean water team, find out more about how to protect water quality in your community at:
Las vías fluviales limpias y la salubridad de su barrio se logran gracias al trabajo en equipo. Sea parte del equipo de agua limpia y obtenga más información acerca de cómo proteger la calidad del agua en su comunidad en:
sbcountystormwater.org
CONTROL | CONTROL
Locate the nearest storm drain and ensure nothing
can enter or be discharged into it.
Ubique el desagüe de aguas pluviales más cercano y
asegúrese de que nada pueda ingresar a éste ni
descargarse en él.
CONTAIN | CONTENER
Isolate your area to prevent material from potentially
flowing or being blown away.
Aísle su área para evitar que el material pueda discurrirse o ser llevado por el viento.
CAPTURE | CAPTURAR
Sweep up debris and place it in the trash. Clean up
spills with an absorbent material (e.g. kitty litter) or vacuum with a Wet-Vac and dispose of properly.
Recoja los restos y colóquelos en la basura. Limpie los derrames con un material absorbente (como la arena
para gatos) o aspírelos con una Wet-Vac (aspiradora de
humedad) y deséchelos correctamente.
In the even t of a spi ll or dischar ge to a storm drain or waterway , contact San Bernadino County Storm water immediat ely: (877) WAS TE18 | sbc ountystormwater .org/report sbcountyst ormwater.org
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COMMERCI AL LA NDSCAPE
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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SIDEWALK, PLAZA, ENTRY MONUMENT &
FOUNTAIN MAINTENANCE
Pollutants on sidewalks and other pedestrian traffic areas and plazas are typically due to littering and vehicle use. Fountain water containing chlorine and copperbased algaecides is toxic to aquatic life.
Proper inspection, cleaning, and repair of pedestrian areas and HOA owned surfaces and structures can reduce pollutant runoff from these areas. Maintaining these areas may involve one or more of the following activities:
1. Surface Cleaning
2. Graffiti Cleaning
3. Sidewalk Repair
4. Controlling Litter
5. Fountain Maintenance
POLLUTION PREVENTION:
Pollution prevention measures have been considered and incorporated in the model procedures.
Implementation of these measures may be more effective and reduce or eliminate the need to implement other more complicated or costly procedures. Possible pollution prevention measures for sidewalk, plaza, and fountain maintenance and cleaning include:
• Use dry cleaning methods whenever practical for surface cleaning activities. • Use the least toxic materials available (e.g. water based paints, gels or sprays for graffiti removal). • Once per year, educate HOA staff and tenants on pollution prevention measures.
MODEL PROCEDURES:
1. Surface Cleaning
Discharges of wash water to the storm water drainage system from cleaning or hosing of impervious surfaces is prohibited.
Use dry methods (e.g. sweeping, backpack blowers, vacuuming) whenever practical to clean sidewalks and plazas rather than hosing, pressure washing, or steam cleaning. DO NOT sweep or blow material into curb; use devices that contain the materials.
If water must be used, block storm drain inlets and contain runoff.
Discharge wash water to landscaping or contain and dispose of properly.
Sidewalks, Plazas
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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SIDEWALK, PLAZA, ENTRY MONUMENT &
FOUNTAIN MAINTENANCE
Parking facilities should be swept/vacuumed on a regular basis.
Establish frequency of public parking lot sweeping based on usage and field observations of waste accumulation.
If water must be used, block storm drain inlets and contain runoff. Discharge wash water to landscaping or contain and dispose of properly. Sweep all parking lots at least once before the onset of the wet season. Use absorbents to pick up oil; then dry sweep.
Appropriately dispose of spilled materials and absorbents.
OPTIONAL:
• Consider increasing sweeping frequency based on factors such as traffic volume, land use, field observations of sediment and trash accumulation, proximity to water courses, etc.
Use high-pressure water, no soap.
If water must be used, block storm drain inlets and contain runoff. Discharge wash water to landscaping or contain and dispose of properly. If water must be used, block storm drain inlets and contain runoff. Discharge wash water to landscaping or contain and dispose of properly. Use biodegradable cleaning agents to remove deposits. Make sure pH is between 6.5 and 8.5 THEN discharge to landscaping (if cold water without a cleaning agent) otherwise dispose of properly.
2. Graffiti Cleaning
Avoid graffiti abatement activities during rain events. When graffiti is removed by painting over, implement the procedures under Painting and Paint Removal in the Roads, Streets, and Highway Operation and Maintenance procedure sheet.
Protect nearby storm drain inlets prior to removing graffiti from walls, signs, sidewalks, or other structures needing graffiti abatement. Clean up afterwards by sweeping or vacuuming thoroughly, and/or by using absorbent and properly disposing of the absorbent.
Parking Areas, Driveways,
Drive-thru
Building Surfaces, Decks,
etc., without loose paint
Unpainted Building
Surfaces, Wood Decks, etc.
Graffiti Removal
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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SIDEWALK, PLAZA, ENTRY MONUMENT &
FOUNTAIN MAINTENANCE
Note that care should be taken when disposing of waste since it may need to be disposed of as hazardous waste.
OPTIONAL:
• Consider using a waterless and non-toxic chemical cleaning method for graffiti removal (e.g. gels or spray compounds).
3. Sidewalk Repair
Schedule surface removal activities for dry weather if possible. Avoid creating excess dust when breaking asphalt or concrete. Take measures to protect nearby storm drain inlets prior to breaking up asphalt or concrete (e.g. place hay bales or sand bags around inlets). Clean afterwards by sweeping up material.
Designate an area for clean up and proper disposal of excess materials. Remove and recycle as much of the broken pavement as possible. When making saw cuts in pavement, use as little water as possible. Cover each storm drain inlet with filter fabric during the sawing operation and contain the slurry by placing straw bales, sandbags, or gravel dams around the inlets. After the liquid drains shovel or vacuum the slurry, remove from site and dispose of properly.
Always dry sweep first to clean up tracked dirt. Use a street sweeper or vacuum truck. Do not dump vacuumed liquid in storm drains. Once dry sweeping is complete, the area may be hosed down if needed. Discharge wash water to landscaping, pump to the sanitary sewer if permitted to do so or contain and dispose of properly.
Avoid mixing excess amounts of fresh concrete or cement mortar on-site.
Only mix what is needed for the job.
Wash concrete trucks off-site or in designated areas on-site, such that there is no discharge of concrete wash water into storm drain inlets, open ditches, streets, or other storm water conveyance structures. (See Concrete Waste Management BMP WM – 8)
Surface Removal
and Repair
Concrete Installation
and Repair
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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SIDEWALK, PLAZA, ENTRY MONUMENT &
FOUNTAIN MAINTENANCE
Store dry and wet concrete materials under cover, protected from rainfall and runoff and away from drainage areas. After job is complete remove temporary stockpiles (asphalt materials, sand, etc.) and other materials as soon as possible. Return leftover materials to the transit mixer. Dispose of small amounts of excess concrete, grout, and mortar in the trash.
When washing concrete to remove fine particles and expose the aggregate, contain the wash water for proper disposal.
Do not wash sweepings from exposed aggregate concrete into the street or storm drain. Collect and return sweepings to aggregate base stock pile, or dispose in the trash.
Protect applications of fresh concrete from rainfall and runoff until the material has hardened.
4. Litter Control
Enforce anti-litter laws.
Provide litter receptacles in busy, high pedestrian traffic areas of the community, at recreational facilities, and at community events. Cover litter receptacles and clean out frequently to prevent leaking/spillage or overflow.
OPTIONAL:
• Post “No Littering” signs.
5. Fountain Maintenance
Do not use copper-based algaecides. Control algae with chlorine or other alternatives, such as sodium bromide.
Allow chlorine to dissipate for a few days and then recycle/reuse water by draining it gradually onto a landscaped area. Water must be tested prior to discharge to ensure that chlorine is not present (concentration must be less than 0.1 ppm). Contact local agency for approval to drain into sewer or storm drain. Avoid mixing excess amounts of fresh concrete or cement mortar on-site.
Only mix what is needed for the job.
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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EQUIPMENT MAINTENANCE & REPAIR
Vehicle or equipment maintenance has the potential to be a significant source of stormwater pollution.
Engine repair and service (parts cleaning, spilled fuel, oil, etc.), replacement of fluids, and outdoor equip- ment storage and parking (dripping engines) can all contaminate stormwater. Conducting the following activities in a controlled manner will reduce the potential for stormwater contamination:
1. General Maintenance and Repair
2. Vehicle and Machine Repair
3. Waste Handling/Disposal
Related vehicle maintenance activities are covered under the following program headings in this manual: “Vehicle and Equipment Cleaning” , “Vehicle and Equipment Storage” , and “Vehicle Fueling” .
POLLUTION PREVENTION:
Pollution prevention measures have been considered and incorporated in the model procedures.
Implementation of these measures may be more effective and reduce or eliminate the need to implement other more complicated or costly procedures. Possible pollution prevention measures for equipment maintenance and repair include:
• Review maintenance activities to verify that they minimize the amount of pollutants discharged to receiving waters. Keep accurate maintenance logs to evaluate materials removed and improvements made.
• Switch to non-toxic chemicals for maintenance when possible. • Choose cleaning agents that can be recycled.
• Minimize use of solvents. Clean parts without using solvents whenever possible. Recycle used motor oil, diesel oil, and other vehicle fluids and parts whenever possible. • Once per year, educate HOA staff and tenants on pollution prevention measures.
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
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EQUIPMENT MAINTENANCE & REPAIR
MODEL PROCEDURES:
1. General Maintenance and Repair
Review maintenance activities to verify that they minimize the amount of pollutants discharged to receiving waters. Keep accurate maintenance logs to evaluate materials removed and improvements made. Regularly inspect vehicles and equipment for leaks.
Move activity indoors or cover repair area with a permanent roof if feasible. Minimize contact of stormwater with outside operations through berming the local sewering and drainage routing.
Place curbs around the immediate boundaries of the process equipment. Clean yard storm drain inlets regularly and stencil them. Avoid hosing down work areas. If work areas are washed and if discharge to the sanitary sewer is allowed, treat water with an appropriate treatment device (e.g. clarifier) before discharging. If discharge to the sanitary sewer is not permitted, pump water to a tank and dispose of properly.
Collect leaking or dripping fluids in drip pans or container. Fluids are easier to recycle or dispose of properly if kept separate.
Keep a drip pan under the vehicle while you unclip hoses, unscrew filters, any discharge of or remove other parts. Place a drip pan under any vehicle that might leak while you work on it to keep splatters or drips off the shop floor. Educate employees on proper handling and disposal of engine fluids. Promptly transfer used fluids to the proper waste or recycling drums. Don’t leave full drip pans or other open containers lying around. Do not pour liquid waste to floor drains, sinks, outdoor storm drain inlets, or other storm drains or sewer connections.
Post signs at sinks and stencil outdoor storm drain inlets.
2. Vehicle Repair
Perform vehicle fluid removal or changing inside of a building or in a contained covered area, where feasible, to prevent the run-on of stormwater and the runoff of spills.
Regularly inspect vehicles and equipment for leaks, and repair as needed.
General Guidelines
Good Housekeeping
General Guidelines
Note: Permission must
be obtained for any
discharge of wash
water to the sanitary
sewer from the local
sewering agency.
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernadino • San Bernadino County • San Bernadino County Flood Control District • Upland • Yucaipa 12
EQUIPMENT MAINTENANCE & REPAIR
Use secondary containment, such as a drain pan or drop cloth, to catch spills or leaks when removing or changing fluids.
Immediately drain all fluids from wrecked vehicles. Ensure that the drain pan or drip pan is large enough to contain drained fluids (e.g. larger pans are needed to contain antifreeze, which may gush from some vehicles). Promptly transfer used fluids to the proper waste or recycling drums. Don’t leave full drip pans or other open containers lying around. Recycle used motor oil, diesel oil, and other vehicle fluids and parts whenever possible.
Oil filters disposed of in trash cans or dumpsters can leak oil. Place the oil filter in a funnel over a waste oil recycling drum to drain excess oil before disposal. Oil filters can also be recycled. Ask your oil supplier or recycler about recycling oil filters.
Store cracked batteries in a non-leaking secondary container and dispose of properly at recycling facilities or at County hazardous waste disposal site. Use absorbent materials on small spills. Remove the absorbent materials promptly and dispose of properly.
Place a stockpile of spill cleanup materials where it will be readily accessible. Sweep floor using dry absorbent material.
3. Machine Repair
Keep equipment clean; don’t allow excessive build-up of oil or grease. Minimize use of solvents.
Use secondary containment, such as a drain pan or drop cloth, to catch spills or leaks when removing or changing fluids.
Perform major equipment repairs at the corporation yard, when practical. Following good housekeeping measures in Vehicle Repair section.
4. Waste Handling/Disposal
Prevent spills and drips of solvents and cleansers to the shop floor. Do liquid cleaning at a centralized station so the solvents and residues stay in one area. Recycle liquid cleaners when feasible.
Vehicle Leak and
Spill Control
Waste Reduction
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernadino • San Bernadino County • San Bernadino County Flood Control District • Upland • Yucaipa 13
EQUIPMENT MAINTENANCE & REPAIR
Locate drip pans, drain boards, and drying racks to direct drips back into a solvent sink or fluid holding tank for reuse.
OPTIONAL:
• If possible, eliminate or reduce the amount of hazardous materials and waste by substituting non-hazardous or less hazardous material:
-Use non-caustic detergents instead of caustic cleaning for parts cleaning.
-Use a water-based cleaning service and have tank cleaned. Use detergent-based or water-based cleaning systems in place of organic solvent degreasers.
-Replace chlorinated organic solvents with non-chlorinated solvents.
Non-chlorinated solvents like kerosene or mineral spirits are less toxic and less expensive to dispose of properly. Check list of active ingredients to see whether it contains chlorinated solvents. -Choose cleaning agents that can be recycled.
OPTIONAL:
• Separate wastes for easier recycling. Keep hazardous and non-hazardous wastes separate, do not mix used oil and solvents, and keep chlorinated solvents separate from non-chlorinated solvents.
• Label and track the recycling of waste material
(e.g. used oil, spent solvents, batteries).
• Purchase recycled products to support the market for recycled materials.
LIMITATIONS:
Space and time limitations may preclude all work being conducted indoors. It may not be possible to contain and clean up spills from vehicles/equipment brought on-site after working hours. Dry floor cleaning methods may not be sufficient for some spills – see spill prevention and control procedures sheet. Identification of engine leaks may require some use of solvents.
Recycling
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernadino • San Bernadino County • San Bernadino County Flood Control District • Upland • Yucaipa 14
POOL MAINTENANCE
Pool chemicals and filter solids, when discharged to the City streets, gutters or storm drans, DO NOT GET TREATED before reaching the Santa Ana River. Chlorine, acid cleaning chemicals and metal-based algaecides used in pools can kill beneficial organisms in the food chain and pollute our drinking water.
When emptying your swimming pool, spa or fountain, please use one of the following best management practices to prevent water pollution:
• Reuse the water as landscape irrigation
• Empty the water into the sewer between midnight and 6:00 am •R emove solids and floating debris and dispose of in the trash, de-chlorinate the water to a chlorine residual = 0, wait 24 hours, then discharge the water to the street or storm drain • Try not to use metal-based algaecides (i.e. copper sulfate) in your pool or spa. If you have, empty your pool or spa into the sewer. Prior to discharging pool water into the sanitary sewer system, contact your local agency. • If the pool contains algae and mosquito larvae, discharge the water to the sewer When acid cleaning or other chemical cleaning:
• Neutralize the pool water to pH of 6.5 to 8.5, then discharge to the sewer For swimming pool and spa filter backwash:
• Dispose of solids into trash bag, then wash filter into a landscape area •S ettle, dispose of solids in trash and discharge water to the sewer, never to the storm drain For Residents
Household Hazardous Waste Center Locations
The following is a preview of the information we
have available to residents. For more fact sheets,
visit sbcountystormwater.org
TOO TOXIC TO TRASH
Dispose of your HOUSEHOLD HAZARDOUS WASTE (HHW) at a FREE HHW Center near you. Examples of items collected: pesticides, fertilizers, paints, cleaners, antifreeze, batteries, motor oil, oil filters, and electronic waste.
To report illegal dumping, call (877) WASTE18
or visit sbcountystormwater.org
SERVICE AREA LOCATION DAYS OPEN HOURS
Big Bear Lake 42040 Garstin Dr. (cross: Big Bear Blvd.) Saturdays 9 a.m. - 2 p.m.
Chino 5050 Schaefer Ave. (cross: 4th St.) 2nd &4 th Sat. 8 a.m. - 1 p.m.
Fontana (Fontana residents only) 16454 Orange Way (cross: Cypress Ave.) Saturdays 8 a.m. - 12 p.m.
Ontario 1430 S. Cucamonga Ave. (cross: Belmont St.) Fri. & Sat. 9 a.m. - 2 p.m.
Rancho Cucamonga 8794 Lion Street. ( Off 9th St, bet ween Vineyard and Hellman) Saturdays 8 a.m. - 12 p.m.
Redlands 500 Kansas St. (cross: Park Ave.) Saturdays 9:30 a.m. - 12:30 p.m.
Rialto 246 Willow Ave. (cross: Rialto Ave.) 2nd &4th Fri. & Sat. 8 a.m. - 12 p.m.
San Bernardino 2824 East ‘W’ St., 302 (cross: Victoria Ave.) Mon. – Fri. 9 a.m. - 4 p.m.
Upland 1370 N. Benson Ave. (cross: 14th St.) Saturdays 9 a.m. - 2 p.m.
TAKE ONEArtwork Courtesy of the City of Los Angeles Stormwater Program. Printed on recycled paper.
Note: Provide a trash bill and a
driver’s license as proof of residency.
(does not
accept E-
waste)
(does not accept E-waste)
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernadino • San Bernadino County • San Bernadino County Flood Control District • Upland • Yucaipa 16 PAINT
When painting your home,
protect your family andc ommunity.
• PAINTSthat are water-based are less toxic and should
be used whenever possible.
• BRUSHESwith water-based paint should be washed
in the sink. Thosewith oil-based paint should be
cleaned with paint thinner.
•
WE DID IT OURSELVES
AND WE DID IT RIGHT
SAFELY dispose of unwanted paint and paint thinner.
The County of San Bernardino offers 9 HHW Centers
that accept paint and other household hazardous waste
from residents FREE of charge. For a list of acceptable materials, location information, and hours of operation call 1-800-OILY CAT.
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernadino • San Bernadino County • San Bernadino County Flood Control District • Upland • Yucaipa 17
VEHICLE MAINTENANCE
Oil, grease, anti-freeze and other toxic automotive fluids often make their way into the San Bernardino County storm drain system, and do not get treated before reaching the Santa Ana River.
This pollutes our drinking water and contaminates waterways, making them unsafe for people and wildlife. Follow these best management practices to prevent pollution and protect public health.
Cleaning Auto Parts
Scrape parts with a wire brush or use
a bake oven rather than liquid cleaners.
Arrange drip pans, drying racks and drain
boards so that fluids are directed back into
the parts washer or the fluid holding tank.
Do not wash parts or equipment in a sink,
parking lot, driveway or street.
Storing Hazardous Waste
Keep your liquid waste segregated. Many
fluids can be recycled via hazardous waste
disposal companies if they are not mixed.
Store all materials under cover with
spill containment or inside to prevent
contamination of rainwater runoff.
Preventing Leaks and Spills
Conduct all vehicle maintenance inside of
a garage. Place drip pans underneath vehicle
to capture fluids. Use absorbent materials
instead of water to clean work areas.
Cleaning Spills
Use dry methods for spill cleanup
(sweeping, absorbent materials). To report
accidental spills into the street or storm drain
call (877) WASTE18 or 911.
Proper Disposal of
Hazardous Waste
Dispose of household hazardous waste
by taking it to your nearest household
hazardous waste center. For more
information, call 1-800-OILY CAT or check
out sbcountystormwater.org/Disposal.html
In the event of a spill or discharge to a storm drain or waterway, contact San Bernadino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org
Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernadino • San Bernadino County • San Bernadino County Flood Control District • Upland • Yucaipa 18
PET WASTE DISPOSAL
Remember to pick up after your pet every time
to keep San Bernardino County clean and healthy!
FREE
To RECEIVE your
FREE CONTAINER
visit us online at
sbcountystormwater.org/dog
DOGGIE WASTE BAGS
PET WASTE DISPOSAL
Get In Touch With Us Online!
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[email protected]
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
To report illegal dumping, call (877) WASTE18 or visit sbcountystormwater.org To report toxic spills call (800) 33 TOXIC
To dispose of hazardous waste, call the CUPA Program (909) 386-8401 sbcountystormwater.org
Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa
DISCHARGE INTO THE STORM DRAIN, ACCIDENTAL OR NOT,
CAN LEAD TO ENFORCEMENT ACTIONS, WHICH CAN INCLUDE FINES.
MOBILE VEHICLE CLEANING & MAINTENANCE
When washing items contaminated by hazardous materials, wash water should be collected and hauled off-site for proper disposal.
Wash in customers wash bay or pump wastewater to the wash bays’ pretreatment system.
If a spill occurs, use an absorbent material such as kitty litter or absorbent pads.
Clean up the excess. Properly dispose of absorbent material used to clean up spills - contact an approved hauler for
assistance/disposal. Sweep work area thoroughly after cleaning.
Keep toxics out of the trash by disposing of them properly, this includes absorbent materials used to clean up toxic waste spills.
Toxic materials may include used motor oil and oil filters, antifreeze, batteries and gasoline. Make sure to maintain hauling records for all hazardous waste.
Engine cleaning must be performed at a facility that has the equipment to properly process the contaminated wash water runoff.
Wash in contained area that has been
bermed up to contain the wash water.
WASH
WATER DISPOSAL
HAZARDOUS WASTE SPILL
CLEAN-UP & DISPOSAL
Stop the source
of the spill
immediately.
Locate the nearest
storm drain and
ensure nothing
can enter or be
discharged into it.
Use tarps and drip pans to prevent spills.
These best management practices will help you prevent polluted water and other materials from flowing into the street, gutter and storm drain.
In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report To dispose of hazardous waste call the San Bernardino County Fire Dept. - CUPA Program (909) 386-8401 sbcountystormwater.org
Prevent potential waste spills from
coming into contact with our waterways:
On the service vehicle:
• Maintain the condition of all hoses, couplings,
tanks, and equipment to prevent leaks or spills.
• Properly store and handle potential contaminants
(Portable Toilet waste, disinfectants, oils,detergents
etc.) to prevent any spills or discharges from
entering the street, gutter or catch basin.
When rinsing or washing Portable Toilets, ensure that all waste water is captured in the containment tray to
prevent waste water from entering the street, gutter or catch basin.
Upon completion of the cleaning process, pump the
captured water into the service vehicle.
WHEN SERVICING
Site Portable Toilets at least 50 feet away from a
catch basin or waterway.
In high wind areas, secure the Portable Toilets by
anchoring the unit securely to the ground.
Equip Portable Toilets with a containment tray to
prevent accidental overflow.
WHEN DELIVERING
PORTABLE TOILET BUSINESSES
THANK YOU FOR BEING A RESPONSIBLE BUSINESS AND HELPING TO KEEP SAN BERNARDINO COUNTY CLEAN AND HEALTHY!
CONTAINMENT TRAY
WATERWAY
50 Ft
WHAT IS STORMWATER POLLUTION?
Stormwater pollution is created when bacteria, organic matter, disinfectants, and suspended solids are transported by water or wind into the catch basins and storm drain system. The untreated urban runoff then flows directly into our lakes and rivers contaminating our communities with high levels of bacteria, posing a threat to public health and wildlife.
ANCHOR TO
THE GROUND
CATCH BASIN
Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa When there is potential for greater than normal
usage, remind your clients to request additional
units or adjust the service schedule to ensure
sanitary conditions and prevent overflow.
En caso de un derrame o descarga en un drenaje pluvial o vía fluvial, comuníquese de inmediato con San Bernardino County Stormwater: (877) WASTE18 | sbcountystormwater.org/report Para deshacerse de los residuos peligrosos llame al Condado de San Bernardino Departamento de Bomberos - programa CUPA (909) 386-8401
Impida que los derrames potenciales de desechos
entren en contacto con nuestras vías fluviales:
En el vehículo de servicio:
• Mantenga en condiciones óptimas todas las mangueras acoples, tanques y equipo a fin de prevenir derrames.
• Almacene y maneje en forma apropiada los contaminantes potenciales (desechos del Baño Portátil, desinfectantes, aceites, detergentes, etc) para impedir cualquier derrame o que se produzcan descargas hacia la calle, la alcantarilla o el sumidero.
Al enjuagar o lavar los Baños Portátiles, asegúrese de que la bandeja de contención capture toda el agua residual, para impedir que ésta llegue a la calle, alcantarilla o sumidero.
Al completar el proceso de limpieza, bombee el agua capturada en el vehículo de servicio.
CUANDO SE REALIZE EL MANTENIMIENTO
Coloque los Baños Portátiles a una distancia mínima de
50 pies de un sumidero o vía fluvial.
En áreas de vientos fuertes, proteja los Baños Portátiles anclando la unidad en forma segura al suelo.
Coloque la bandeja de contencion abajo del Baño
Portatil.
AL MOMENTO DE LA ENTREGA
NEGOCIOS DE BAÑOS PORTÁTILES
GRACIAS POR SER UN NEGOCIO RESPONSABLE Y AYUDAR A MANTENER LIMPIO Y SALUDABLE EL CONDADO DE SAN BERNARDINO.
BANDEJA DE CONTENCIÓN
VÍAS FLUVIALES
50 PIES
¿QUÉ ES LA CONTAMINACIÓN DE AGUAS PLUVIALES?
La contaminación de aguas pluviales se crea cuando el agua o el viento transportan bacterias, materia orgánica, desinfectantes y sólidos suspendidos hacia los sumideros y el sistema de drenaje pluvial. Los residuos líquidos urbanos sin tratar luego fluyen directamente hacia los lagos y ríos contaminando nuestras comunidades con altos niveles de bacterias y plantean una amenaza para la salud pública y la vida silvestre.
ÁNCLELO
AL SUELO
ALCANTARILLA
Cuando exista la posibilidad de un uso mayor de lo normal, recuerde a sus clientes que soliciten unidades adicionales o que adapten el programa de mantenimiento para
garantizar las condiciones sanitarias y prevenir desbordes. sbcountystormwater.org
Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa