RECORDING REQUESTED BY:
WHEN RECORDED RETURN TO:
City of San Bernardino
Public Works Department, 2nd Floor
20 1 North "E'' Street
San Bernardino, CA 92401
SPACE ABOVE THIS LINE FOR RECORDER'S USE ON LY
Owner:
AGREEMENT
STORMWATER TREATMENT DEVICE AND CONTROL MEASURE ACCESS
AND MAINTENANCE AGREEMENT
City of Riverside
Tract No.: N/ A APN: 0141-252-08
Address: 1388 S. "E" Street, San Bernardino, CA 92408
THIS AGREEMENT is made and entered into this _ day of __ , 2024, between the City of San Bernardino. a Cha11er City and municipal corporation, ("'City'') and CITY OF RIVERSIDE, a California cha11er City and municipal corporation ('"Owner"). The Owner and the City are sometimes each individually referred to herein as a "Pa11y" and, collectively , as the " Parties."
RECITALS
WHEREAS, the Owner owns real prope11y ("Property") in the City specifically described in Exhibits "A'' and '' B'' which are attached hereto and incorporated herein by this reference; and WHEREAS, the Property is occupied by WattEV SB I, Inc. ("Tenant ") subject to a lease with Owner; and
WHEREAS, at the time of approval of the Tenant's development project commonly known as 1388 S. "E" Street (the ·'Project"), the City required the Project to employ on-site control measures to minimize pollutants in urban stormwater runoff; and
WHEREAS. the Tenant has chosen to install underground infiltration system and drain inse11s (the "Devices ") to minimize pollutants in urban stormwater runoff and WHEREAS, the Devices having been installed in accordance with plans and specifications approved by the City; and
WHEREAS, the Devices being installed on private property and draining only private property. are private facilities with all maintenance or replacement therefore being the sole responsibility of the Owner and Tenant; and
WQM P Agreement Storm water Treatment-Maintenance Agreement 11-13-2023 55600 .0023 I \4229 1739.2
WHEREAS, the Owner is aware that periodic and continuous maintenance including, but not necessarily limited to, filter material replacement and sediment removal as specified in the site's Water Quality Management Plan ("WQMP") is required to assure proper performance of the Devices; and WHEREAS , the Owner is also aware that such maintenance activity will require compliance with all Federal, State and local laws and regulations, including those pertaining to confined space and waste disposal methods in effect at the time such maintenance occurs; and WHEREAS , California Regional Water Quality Control Board Order No. R8-2010-0036 (NPDES No. CAS 618036) San Bernardino County Municipal Separate Storm Sewer System ("MS4") Permit and San Bernardino Municipal Code Section 8.80.208 requires this Stormwater Treatment Device and Control Measure Access and Maintenance Agreement; and NOW, THEREFORE , in consideration of the City's approval of the Project and the mutual promises contained herein, the City of San Bernardino and Owner agree as follows:
AGREEMENT
I. The Owner hereby provides the City and its clesignees with full right of access to the Devices, the Owner's Property in the immediate vicinity of the Devices, and the po11ion of the Owner's Property necessary for ingress or egress to the Devices (a) at any time, upon reasonable notice; or (b) in the event of emergency , as determined by City's Public Works Director with no advance notice. The purpose of the access is to allow the City to inspect, sample, and test the Devices, and in cases of emergency , to undertake all necessary repairs or other preventative measures as determined by the City' s Public Works Director at the Owner's expense as provided for in Section 3, below. The City shall make every effo11 at all times to minimize or avoid interference with the Owner's use of the Property when uncle11aking such inspections and repairs.
2. The Owner shall diligently maintain the Devices in a manner consistent with the manufacturers · recommended maintenance schedule or the maintenance schedule supplied in the site's WQMP to ensure efficient performance. All reasonable precautions shall be exercised by the Owner and the Owner 's representatives in the removal and extraction of materials from the Devices, and the ultimate disposal of the materials in a manner consistent with all applicable laws. Upon the City's reasonable request, the Owner shall provide the City with documentation identifying the materials removed, the quantity of the materials removed, and the location of disposal destinations , as appropriate.
3. In the event the Owner fails to perform the necessary maintenance required by this Agreement within thirty (30) clays of being given written notice from the City specifically explaining and requesting the action(s) to be taken, the City is authorized to cause any maintenance necessary to be clone and charge the entire cost and expense to the Owner, including administrative costs, attorneys ' fees and interest thereon at the maximum rate authorized by law. Owner agrees that City may record a lien against the Prope11y twenty (20) days after the City sends Owner the notice of charges if said charges have not been paid in full by Owner.
4. This Agreement shall be recorded in the Official Records of the County of San Bernardino at the expense of the Owner and shall constitute notice to all successors and assigns to the title to the Property of the obligations herein set forth.
WQM P Agreement Storm water Treatrne11t-Mai11te11:.1nce Agreement 11-1 3-2023 55600 0023 114229 1739.2
5. In the event any action is commenced to enforce or interpret any of the terms or conditions of this Agreement the prevailing Party shall , in addition to any costs and other relief, be entitled to the recovery of its reasonable attorneys' fees. The costs, salary a nd expenses of the C ity Attorney and members of their office in enfo rcing this Agreement on behalf of the City shall be considered '·attorney's fees" for the purposes of this Agreement.
6. It is t he intent of the Parties that the burdens a nd benefits herein undertaken shall constitute equit able servitudes that run with the Property and shall be binding upon future owners of all or any po1tion of the Prope1ty. Any owner's liability hereunder shall terminate at the time it ceases to be an owner of the encumbered Property, except fo r obligations which accrue prior to the date of transfer by such owner, which shall remain the personal obligation of such owner.
7. Time is of the essence in the performance of this Agreement.
8. Any notice to a Party required or called fo r in this Agreement shall be served in person, or by deposit in the U.S. Mail , first class postage prepaid, to the a ddress set fo rth below. Notice(s) shall be deemed effecti ve upon r eceipt, or seventy-two (72) hours after deposit in the U .S.
Mail, whichever is earlier. A Party may change notice address only by providing written notice thereof to the other Party.
CITY
Public Works Director
City of San Bernardino
20 I, North ·'E'' Street, 2nd Floor
San Bernardino, CA 9240 I
OWNER
Utilities General Manager
City of Riverside
3750 Uni versity Avenue 5th Floor
Ri verside, CA 9250 I
9. This Agreement shall be governed by and construed in acco rdance with the laws of the State of California.
WQM P Agreement Storm,,·ater Treatment-Maintenance Agreement 11 - 13-2023 55600 0023 1 \4229 1739.2
STORMWATER TREATMENT DEVICE AND CONTROL MEASURE ACCESS
AND MAINTENANCE AGREEMENT
I 0. Any amendment to this Agreement shall be in writing and approved by the Public Works Director of the City and signed by the City and the Owner.
I, THE UNDERSIGNED, HA VE A SUFFICIENT OWNERSHIP INTEREST IN THE
PROPERTY HEREIN TO CONSENT TO THE IMPOSITION OF A LIEN
THEREON , AND HAVE READ AND UNDERSTAND THE FOREGOING AND, BY
MY SIGNATURE, AGREE TO COMPLY IN ALL RESPECTS WITH THE
CONDITIONS OF THIS AGREEMENT AND DO HEREBY PERSONALLY
GUARANTEE THE PAYMENT OF THESE FEES AND FURTHER AGREE TO THE PLACEMENT OF A LIEN AS DESCRIBED ABOVE ON THE PROPERTY.
Name of Company -----------------
Signature -----------------
Name Title --------
(please print)
Mailing address ------------------
City State ------- ---
Phone
ATTESTED TO:
By: _______ ____ _
City Clerk
CERTIFIED AS TO AVAILABILITY OF FUNDS:
By: _ _______ _____ _
Chief Financial Officer
APPROVED AS TO FORM:
Senior Deputy City Attorney
APPROVED AS TO CONTENT:
Zip ---
By:,==--,......,....,.....,.....,.......,,,---~,......-....._,,,.,,.....,...,.,. ......... .,.......,.......,..,,..,.......,.,,.......,.......-- -Azzarn Jabsheh, Deputy Director of Public Works/City Engineer Public Works Department
City of San Bernardino
NOTE: All Signatures Must be Acknowledged by a Notary Public.
WQM P Agree111e11t Storm\\'ater Treat111e11L-Mainte11ance A greement I 1-1 3-2023 55600 00231 \42291739.2
Final
Water Quality Management Plan
For:
WattEV
1388 S. "E" Street
(formerly 1380 S.
11 E" Street)
San Bernardino, CA 92408
APN(s): 0141-252-08
Prepared for:
3900 Main Street
City of Riverside
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)
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 plan 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 responsibility 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."
8. Project Data
Permit/ Application
Number(s):
THR23-012 Grading Permit Number( s):
Tract/Parcel Map Building Permit Number(s):
Number(s):
CUP, SUP, and/or APN (Specify Lot Numbers if Portions of Tract) :
Owner: City of Riverside
Title Owner
Representative
3900 Main Street
Address Riverside CA 92522
Email
Telephone# (951) 826-5311
Signature
Ruthann M. Salera
Deputy City Attorney
Owner's Signature
Owner's Certification
LD2300006
APN: 0141-252-08
Date I
Water Quality Management Plan (WQMP)
Preparer's Certification
Project Data
Permit/ Application THR23-012
Number(s):
Grading Permit Number(s): LD2300006
Tract/Parc el Map Building Permit Number(s) :
Number(s):
CUP, SUP, and/or APN (Specify Lot Numbers if Portions ofTract) : APN: 0141-252-08 "The selection, sizing and design of stormwater treatment and other storm water quality and quantity control measures in thi s plan were prepared under my oversight and meet the requirements of Regional Water Quality Control Board Ord er No. RS-2010-0036. "
Engineer: James T. Stanton PE Stamp Below
Title
Company
Address
Email
Telephone It
Signature
Date
Vice President of Engineering
Joseph E. Bonadiman & Associates, Inc.
234 North Arrowhead Avenue San Bernardino, CA
92408
jts@bonadiman .com
(909) 885-3806
,;~) >£-~h~-- -
..,,, _.,
·./
4/7/23 Rev. 5/23/24 - Official address of 1388 S E St et replaced as applicable Contents
Water Quality Management Plan (WQMP)
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 Wate r 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 Cont rol 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 Alternati ve Compliance Plan (if applicable )....... ........................................................ 4-25 Section S 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 Constructi on. ................................................................................................ ......... 6-3
6.4 Other Supporting Documentation .. ..................... ....... ............................ ..... ...... ......... 6-4 Contents ii
Water Quality Management Plan {WQMP)
Forms
Form 1-1 Project Information .............. ...... .................. .............. .......................................... .
Form 2.1-1 Description of Proposed Project ........ ... ........................ ........ .......... ................... .
Form 2.2-1 Property Ownership/Management ... .... ....... ..................................................... . .
Form 2.3-1 Pollutants of Concern ....... ........ ........... .......... ....... .... .............................. ........... .
Form 2.4-1 Water Quality Credits .......... .............................................. ............................ .... .
Form 3-1 Site Location and Hydro logic Features ... .......... ..................... ....... ........... ............ .
Form 3-2 Hydrologic Characteristics ......................... ................ ........... ............................ ... .
Form 3-3 Watershed Description ................. ............... .... ..................... ............ ......... ........... .
Form 4.1-1 Non-Structural Source Control BMP ................ ....... ............... ....... ..... ................ .
Form 4.1-2 Structural Source Control BMP .... ..... ..... ..... .................. ..... ............... .......... ...... .
Form 4.1-3 Site Design Practices Checklist. ......................... ............... ...... ................ ... ........ .
Form 4.2-1 LID BMP Performance Criteria for Design Capture Volume ................ ..... ....... .
Form 4.2-2 Summary of HCOC Assessment ......... .... ....................... .......... .... ............... ........ .
Form 4.2-3 HCOC Assessment for Runoff Volume .......... .............. ........ ........ ...... ......... ....... .
Form 4.2-4 HCOC Assessment for Time of Concentration ....... ................. ................... ...... .
Form 4.2-5 HCOC Assessment for Peak Runoff ... ...................... ............ ............ ...... ........... . .
Form 4.3-1 Infiltration BMP Feasibility ........................... ..................................... ............... .
Form 4.3-2 Site Design Hydrologic Source Control BMP ...... ...................... .... .................... .
Fonn 4.3-3 Infiltration LID BMP ............ ....... ......... ............. .................................. .............. . .
Fonn 4.3-4 Harvest and Use BMP .......... ................ ....... ........... ... ...... ................. ........... ....... .
Form 4.3-5 Selection and Evaluation ofBiotreatment BMP ............ ....... ............................ .
Form 4.3-6 Volume Based Biotreatment - Bioretention and Planter Boxes w/Underdrains Form 4.3-7 Volume Based Biotreatment- Constructed Wetlands and Extended Detention Forn1 4.3-8 Flow Based Biotreatment ..................... ....... ......................... .... ......................... .
Form 4.3-9 Conformance Summary and Alternative Compliance Volume Estimate ......... .
Form 4.3-10 Hydromodification Control BMP ........ ......... ................. ......... ...... ......... .......... .
Form 5-1 BMP Inspection and Maintenance .......... ...................................... ....... ..... ........... .
Contents
1-1
2-1
2-2
4-4
4-6
4-7
4-8
4-9
4-10
4-11
4-13
4-14
4-17
4-18
4-19
4-20
4-21
4-22
4-2 3
4-2 4
5-1
iii
Water Quality Management Plan (WQMP)
Section 1 Discretionary Permit(s)
Form 1-1 Project Information
WattEV
Project Name 1388 S. "E" Street
San Bernardino , CA 92408
Project Owner Contact Name: City of Riverside
Mailing 3900 Main St E-mail Telephone : (951) 826-5311
Address: Riverside, CA 92522 Address:
Permit/ Application Number(s) : THR23-012 Tract/Parcel Map Number(s):
Additional Information/
Comments:
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 Description of Project : 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.
1-1
Water Quality Management Plan (WQMP)
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 othe r 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):
[gi Significant re-development 0New development involving D Automotive repair 0Restaurants (with SIC involving the addition or the creation of 10,000 ft 2 or shops with standard code 5812) where the land replacement of 5,000 ft 2 or more of impervious surface indu strial classification (SIC) area of development is more of impervious surface on collectively over entire site codes 5013, 5014, 5541, 5,000 ft2 or more an already developed site 7532- 7534, 7536-7539
D Hillside developments of D Developments of 2,500 ft 2 [gi Parking lots of 5,000 ft 2 D Retail gasoline outlets 5,000 ft 2 or more wh ich are of impervious surface or more or more exposed to storm that are either 5,000 ft 2 or located on areas with known adjacent to (within 200 ft) or water more, or have a projected erosive soil conditions or discharging directly into average daily traffic of 100 where the natural slope is environmentally sensitive areas or more vehicles per day 25 percent or more or waterbodies listed on the
CWA Section 303(d) list of
impaired waters.
□ 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): 1178,290 1 3 Number of Dwelling Units: lo 1 4 SIC Code: 14212 5 Is Project going to be phased? Yes D 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 D No~ If yes, ensure that applicable requirements far transportation projects are addressed (see Appendix A of TGD for WQMP)
2-1
Water Quality Management Plan (WQMP)
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, Cal trans, etc.) after project completion. State if a homeowners 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
2-2
Water Quality Management Plan {WQMP)
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
Please check:
Pollutant E=Expected, N=Not Additional Information and Comments Expected
Pathogens (Bacterial/ Virus) E~ ND
Per section 3.3 of the TGD for WQMP, potential sources include animal waste .
Phosphorous E~ ND
Per section 3.3 of the TGD for WQMP, potential sources include fertilizers and eroded soils.
Nitrogen E~ ND Per section 3.3 of the TGD for WQMP, potential sources include fertilizers and eroded soils.
Sediment E~ ND Per section 3.3 of the TGD for WQMP, potential sources include eroded soils.
Metals E~ ND Per section 3.3 of the TGD for WQMP, potential sources include brake pad and tire tread wear associated with driving.
Per section 3.3 of the TGD for WQMP, potential sources include Oil and Grease E~ ND petroleum hydrocarbon products, motor products from leaking vehicles, esters, oils, fats, waxes, and high molecular-weight fatty acids.
Trash/Debris E~ ND
Per section 3.3 of the TGD for WQMP, potential sources include paper, plastic, polystyrene packing foam, and aluminum materials.
Pesticides/ Herbicide s E~ ND Per section 3.3 of the TGD for WQMP, potential sources include fertilizers and pest sprays.
Organic Compounds E~ ND
Per section 3.3 of the TGD for WQMP, potential sources include solvents and cleaning compounds.
Other: ED ND
Other: ED ND
Other: ED ND
Other: ED ND
Other: ED ND
Other: ED ND
2-3
Water Quality Management Plan (WQMP)
2.4 Water Quality Credits
A water quality credit program is app licab le for certain types of development projects if it is not feasible to meet the req ui rements for on -site LID. Proponents for eligible projects, as described below, can app ly for water quality credits that wou ld red uce project obligations for selec ting and sizing other treatment BMP or participating in other alternative comp liance program s. Refer to Section 6.2 in the TGD for WQMP to determine if water quality credits are app licab le for the project.
Form 2.4-1 Water Quality Credits
1 Project Types that Qualify for Water Quality Credits: Select all that apply D Redevelopment projects that Higher density 0 Mixed use development , 0Brow nfield reduce the overa ll impervious development projects (combination of residential , redevelopment footpr int of the project site. Overtical density [20%] commerc ial, industr ial, office, (redevelop real property [Credit = % impervious reduced] institutional , or other land uses comp licated by presence 0 7 units/ acre [5%] which incorpo rate design principles or potential of hazardous that demonstrate environmental contaminants) [25%]
benefits not realized through single
use projects) [20%]
D Redevelopment projects in D Transit-oriented D In-fill projects (conversion of D Live-Work establish ed historic district , developments (mixed use empty lot s & other underused developments (variety of histor ic preservation area, or residential or commercia l spaces< 5 acres, substantia lly developments designed similar signifi cant core city center area designed to maximize surrounded by urban land uses, into to support residential and areas [10 %] access to public more beneficially used spaces, such vocationa l needs) [20%] transpor tati on) [20%] as residential or commercial areas) [10%]
2 Total Credit% 0 (Total all credit percentages up to a maximum allowable credit of 50 percent) Description of Water Quality
N/A Credit Eligibilit y (if applicable)
2-4
Water Quality Management Plan (WQMP)
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 limitat ions of the site and its receiv ing waters. Identify distinct drainage areas (DA) that collect flow from a portion of the site and describe how runoff from eac h 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 examp le.
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 I outlet.
Form 3-1 Site Location and Hydrologic Features
Site coordinates take GPS
measurement at approximate center Latitude 34.07553 Longitud e - 117.29470 Thom as Bros Map page 606 of site
1 San Bernardino County climatic region : ~ Valley O Mountain 2 Does the site have more than one drainage area (DA): YesO 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 ar a drawing clearly showing OMA and flow routing may be atta ched ~
1 Conveyance Briefly describe on-site drainage featur es to convey runoff that is not retained within a DMA DA-1 TO BMP-1 Draina ge area drains to an underground infiltration system through catch basins. Overflow flows through parkway culvert located at sout h end of site along S. "E" Street. 3-1
Water Quality Management Plan (WQMP)
11 Form 3-2 existirng Hydrologic Characteristics for Draim.age Area 1 1, For Drainage Area l 's sub-watershed OMA, OMA A OMA B OMA C OMA D provide the following characteristics (Asphalt) (Building-Roof) (Concrete) (Perviou s) 1 OMA drainage area (ft 2) 142,029 2,660 10,926 22,675
2 Exist ing site imper vious area (ft 2) 124,176 124,176 124,176 124,176 3 Antecedent moisture condition For desert
areas, use II II II II
htt12.:1'/www.sbcount~.gov/..d12.w/..(Joodcontrol/._Qd{l2 0100412 maQ.Qd{
4 Hydrologic soil group Refer to Watershed
Mopping Tool - A A A A
htt12.://sbcoun t~. Qermitrock. com/._WAP
5 Longest flowpath length (ft) 7o4 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 Perennial Perennial Perennial Perennial of Hydrology Manual Grasses Grasses Grasses Grasses
8 Pre-developed pervious area condition:
Based on the extent of wet season vegetated cover Poor Poor Poor Poor good >75 %; Fair 50-75 %; Poor <50 % Attach photos
of site to support rating
3-2
Water Quality Management Plan (WQMP)
1,
Form 3-3 Watershed Description for Drainage Area 1
Santa Ana River, Reach 5
Santa Ana River, Reach 4
Receiving waters Santa Ana River, Reach 3
Refer to Watershed Mopping Tool - Prado Reservoir htt[!_:,{/sbcoun t~.Q_ermitrack. com/._WAP Santa Ana River, Reach 2 See 'Drainag e Facilities " link at this website Santa Ana River, Reach 1
Pacific Ocean
Santa Ana River, Reach 4 - None
Santa Ana River, Reach 3 - Pathogens, Nitrate
Applicable TMDLs Prado Reservoir - Pathogens
Refer to Local Implementation Plan 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
Mopping Tool - Santa Ana River, Reach 4 - Indic ator Bacteria htt[!_:i/sbcount~.{!_ermitro ck.com/._WAP and State Santa Ana River, Reach 3 - Copper, Lead and Indicat or Bacteria Water Resources Control Boord website - Prado Reservoir - pH httQ_:i/www .waterboards.co.gavl._santaonol._woter iss
ues/._Q_rograms!._tmd/1._index.shtml
Environmentally Sensitive Areas (ESA)
Refer to Watershed Mapping Tool - Areas within 200': San Bernardino Kangaroo Rat htt[!_:,{/sbcount~.Q_ermitrock.com/._WAP
Unlined Downstream Water Bodies
Refer to Watershed Mapping Tool - None
htt[!_:,{/sbcoun t~.Q_ermitrock. com/._WAP
D Yes Complete Hydrologic Conditions a/Concern {HCOC) Assessment. Include Hydrologic Conditions of Concern Forms 4.2-2 through Form 4.2-5 and Hydromodification BMP Form 4.3-10 in submittal cg] No
□ Yes Attach verification of regional BMP evaluation criteria in WAP • More Effective than On-site LID
Watershed-based BMP included in a RWQCB • Remaining Capacity for Project DCV approved WAP
• Upstream of any Water of the US
• Operational at Project Completion
• Long-Term Maint enance Plan
cg] No
3-3
Water Quality Management Plan (WQMP)
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. 4-1
Water Quality Management Plan (WQMP)
Form 4.1-1 Non-Structural Source Control BMPs
Check One
Identifier Name Describe BMP Implementation OR,
Included Not if not applicable, state reason
Applicable
Nl Education of Property Owners, Tenant s (g] □
Th e Property Owner will provide BMP educational information materials to any and Occupants on Stormwater BMPs employees, tenants (if any), and occupants.
Activity restrictions will be imposed by the owner to limit exposure of stormwater to N2 Activity Restrictions (g] □ potentia l pollutants . Activity restriction s include postin g "No Litt ering" signs and ensuring pesticide application is performed by a certi fied applicator.
N3 Landscape Management BMPs (g] □
Owner will ensure landscaping and irrigation is proper ly maintained. Fertilizers and pesticides be applied by certified persons.
N4 BMP Maintenance (g] □ The property owner will ensure regular inspection, repair, and maintenance of BMP.
NS Title 22 CCR Compliance
□ (g] No hazardous waste storage is proposed for thi s project . (How deve lopment will comp ly) N6 Local Water Quality Ordinances (g] □ This project will comp ly with all local water quality ordinances through this WQMP.
N7 Spill Contingency Plan □ (g] Not applicable for proposed project.
NS Undergro und Storage Tank Compliance □ (g] No underground storage tanks are proposed.
N9 Hazardous Materials Disclosure
□ (g] No hazardous waste storage is proposed for this project. Compliance NlO Uniform Fire Code Implementat ion □ (g] No haza rdous waste storage is proposed for this project. 4-2
Water Quality Management Plan (WQMP)
Form 4.1-1 Non-Structural Source Control BMPs
Nll 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 Inspectio n Program ~ □ Ow ner will ensure catch basins are regularly inspected, repaired, and maintained.
NlS Vacuum Sweeping of Private Streets and
~ □ Parking areas shall be vacummed and sweeped monthly . Parking Lots N16 Other Non-stru ctural Measures for Public
□ ~ Project is not a public agency project. Agency Projects N17 Comply with all other applicable NP DES
~ □
The proposed site will comply with the construction general permit through permits impl ementation of the site specific Storm Water Pollution Prevent ion Plan ISWPPP). 4-3
Water Quality Management Plan (WQMP)
Form 4.1-2 Structural Source Control BMPs
Check One
Identif ier Name
Describe BMP Im plementation OR,
Included Not If not applicable , state reason
App licable
Provide storm drain system stencilling and signage All stor m drain inlets and catch basins wi ll be labeled. Sten ciled labels shall state 51 ~ □ "No Dumping - Drains to River" or similar message discouraging any litter (CASQA New Development BMP Handbook SD-13) dumping.
Design and construct outdoor materia l stora ge
52 areas to reduce pollution introduction (CASQA □ ~ No outdoor material storage.
New Development BMP Handbook SD-34)
Design and construct trash and waste storage
53 areas to reduce pollution introduction (CASQA ~ □ Trash storage areas will be designed in accordance with the City of San Bernardino.
New Development BMP Handbook SD-32)
Use efficient irrigation systems & landscape
design, water conservation, smart contro llers, and Owner will ensure landscaping and irrigation is proper ly maintained. Irrigation 54 source contro l (Statewide Mode l Landscape ~ □ contro ls shall include rain-triggered shutoff devices to prevent irrigation after Ordinance ; CASQA New Development BMP precipitation .
Handbook SD-12)
Finish grade of landscaped areas at a minim um of
ss 1-2 inches below top of curb , sid ewa lk, or ~ □ Landscape areas will be a minimum of 1 inch below adjacent impervious areas. pavement
Protect slopes and channel s and provide energy
56 dissipation (CASQA New Development BMP □ ~ Proposed site does not have slopes or channe ls.
Handboo k SD-10)
57 Covered dock areas (CASQA New Development
□ ~ No dock areas are propo sed. BMP Handbook SD-31)
Covered mainten ance bays with spill containment
58 plans (CASQA New Development BMP Handbook □ 0 No maintenance bays are proposed .
SD-31)
59 Ve hicle wash areas with spill containment plans
□ ~ No vehicle washing is proposed. (CASQA New Development BMP Handbook SD-33) 510 Covered outdoor processing areas (CASQA New
□ ~ No outdoor processing proposed. Development BMP Handbook SD-36) 4-4
Wat er Quality Management Plan (WQMP)
Form 4.1-2 Structural Source Control BMPs
Equipment wash areas with spill containment
511 plans (CA5QA New Development BMP Handbook □ ~ No equipment washing proposed. 5D-33)
512 Fueling areas (CA5QA New Development BMP
□ ~ No fueling is proposed . Handbook 5D-30)
513 Hillside landscaping (CA5QA New Development
□ ~ No hillside land scaping is proposed . BMP Handbook 50-10) 514 Wash water control for food preparation areas □ ~ No food preparation proposed. 515 Community car wash racks (CA5QA New
□ ~ No car washing proposed . Development BMP Handbook 5D-33) 4-5
Water Quality Management Plan (WQMP)
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:
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
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
I/yes , explain how preventative site design practice is addressed in project site plan. /[no, other LID BMPs must be selected to meet targets Minimize impervious areas: Yes 0 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 0 No D
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 0 No D 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 D No ISi
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 D No ISi Explanation: Existing site will be entire ly replaced with hardscape and landscaping. LID BMP selected to meet target is an underground infiltration system.
Re-vegetate disturbed areas: Yes 0 No D
Explanation: Disturbed areas will be re-vegetated where possible.
Minimize unnecessary compaction in stormwater retention/infiltration basin/trench areas: Yes 0 No D 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 D No 0 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 0 No D Explanation: Landscape areas will be marked with flagging to minimize compaction and maximize natural infiltration capacity. 4-6
Water Quality Management Plan {WQMP)
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 I outlet.
Methods applied in the following forms include :
• For LID BMP Design Capture Volume (DCV), the San Bernardino County Stormwater Program requ ires use of the P6 method (MS4 Permit Section Xl.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 hydro logic 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 mi2), 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 calc ulation s 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 a
(DA 1)
1 Project area DA 1 (ft 2): 2 Imperviousness after applying preventative 3 Runoff Coefficient (Re): 0.692 178,290 site design practices (Imp%): 87.28 R, = 0.858(fmp %f'- 0. 78/fmp %t'+ 0. 774(fmp%)+0.04 4 Determine 1-hour rainfall depth for a 2-year return period P2vr-Ihr (in): 0.495 httellhdsc. nws. noaa. g_ov t'_hdsct'.elds!.sat'.sca elds. html 5 Compute PG, Mean 6-hr Precipitation (inches): 0.732
P• = Item 4 *C1, where C, 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 24-hrs D by the lorn/ jurisdiction. The necessary BMP footprint is a function of drowdown time. While shorter drowdown times 48-hrs ~ reduce the performance criteria for LID BMP design capture volume, the depth of water that can be stored is also reduced.
7 Compute design capture volume, DCV (ft 3): 14,788
DCV = 1/12 • [Item 1 • Item 3 *item 5 • Cz], where Cz is o function of drowdown rote (24-hr = 1.582; 48-lir = 1.963} Compute separate DCV for each outlet from the project site per schematic drawn in Form 3-1 Item 2 4-7
Water Quality Management Plan (WQMP)
Form 4.2-2 Summary of ftCOC Assessmemt (DA 1}
Does project have the potential to cause or contribute to an HCOC in a downstream channel: Yes D No~ Go to: htt[!_:(/sbcount~.{!_ermitrock.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 (ft 3) Time of Concentration (min) Peak Runoff (cfs) 1 2 3
Pre-developed
Form 4.2-3 Item 12 Form 4.2-4 Item 13 Form 4.2-5 Item 10 4 5 6
Post-developed
Form 4.2-3 Item 13 Form 4.2-4 Item 14 Form 4.2-5 Item 14 ......................................... ............................................ •••••••••••••••••••••••••••••••••••••••••••• ........................................... 7 8 9
Difference
Item 4 - Item 1 Item 2- Item 5 Item 6 - Item 3
Difference 10 % 11 % 12 %
(as% of pre-developed) Item 7 I Item 1 Item 8 I Item 2 Item 9 I Item 3 4-8
Water Quality Management Plan (WQMP}
Form 4.2-3 HCOC Assessment for Runoff Volllme fDA 1)
Weighted Curve Number
Determination for: DMAA DMAB DMAC DMAD DMAE DMAF DMAG DMAH Pre-developed DA
la Land Cover type
2a Hydrologic Soil Group (HSG)
3a OMA Area, ft 2 sum of areas of
OMA should equal area of DA
4a Curve Numbe r (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: DMAA DMAB DMAC OMA D DMAE DMAF DMAG DMAH Post-developed DA
lb Land Cover type
2b Hydro logic Soil Group (HSG)
3b OMA Area, ft 2 sum of areas of
OMA 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): 9 Initial abstraction, 1. (in):
5 = (1000 I Item 5) - 10 la= 0.2 • Item 7
6 Post-Developed area-weighted CN: 8 Post-developed soil storage capacity, S (in): 10 Initial abstraction, la (in):
S = (1000 I Item 6) - 10 la = 0.2 • Item 8
11 Pr·ecipitation for 2 yr, 24 hr storm (in):
Go to: httei/hdsc.nws.noaa.g_ovifidsc(.etdst_sat_sca elds.html 12 Pre-developed Volume (ft 3):
Vp,. =(1 I 12) * (Item sum of Item 3) • {(Item 11 - Item 9)"2 I ((Item 11 -Item 9 + Item 7) 13 Post-developed Volume (ft3):
Vp,, =(1 I 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
4-9
Water Quality Management Plan {WQMP)
form 4.2-4 IHCOC Assessment for Ti:me of Conceliltration (DA 1) Compute time of concentration for pre and post developed conditions for each DA (For projects using the Hydrolog y Manual complete the form below)
Pre-developed DAl Post-developed DAl
Variables Use additional forms if there are more than 4 OMA Use additional forms if there are more than 4 OMA
DMAA DMAB DMAC DMAD DMAA DMAB DMAC DMAD
1 Length of flowpath (ft) Use Form 3-2
Item 5 for pre-developed condition
2 Change in elevation (ft)
3 Slope (ft/ft), 5, = Item 2 I Item 1
4 Land cover
5 Initial DMA Time of Concentration
(min) Appendix C-1 of the TGO for WQMP
6 Length of conveyance from DMA
outlet to project site outlet (ft)
May be zero if OMA outlet is at project site
outlet
7 Cross-sectional area of channel (ft 2)
8 Wetted perimeter of channel (ft)
9 Manning's roughness of channel (n)
10 Channel flo w velocity (ft/sec)
Vtp, = {1.49 / Item 9) * (Item 7/ltem 8}"'"·67 •
{Item 3}"'"5
11 Travel time to outlet (min)
T, = Item 6 / {Item 10 • 60)
12 Total time of concentration (min)
T, = Item 5 + Item 11
13 Pre-developed time of concentration (min): Minimum of Item 12 pre-developed OMA 14 Post-developed time of concentration (min): Minimum of Item 12 post-developed OMA 15 Additional time of concentration needed to meet HCOC requirement (min): Tc.Hcoc = (Item 14 * 0.95) - Item 13 4-10
Water Quality Management Plan (WQMP)
Form 4.2-5 HCOC Assessment for Peak Runoff fDA 1)
Compute peak runoff for pre- and post-developed conditi ons Pre-developed DA to Project Post-developed DA to Project Outlet (Use additional farms if Outlet (Use additional forms if Variables more than 3 OMA) mare than 3 OMA)
DMAA DMAB DMAC DMAA DMAB DMAC
1 Rainfall Inten sity for stor m duration equal to time of concen tration /pea•= lO"(LOG Form 4.2-1 Item 4 - 0.6 LOG Form 4.2-4 Item 5 /60) 2 Drainage Area of each OMA (ft 2 )
For OMA w ith outlet at project site outlet, includ e upstream OMA (Using example schematic in Form 3-1, OMA A will include drainage from OMA CJ 3 Ratio of pervious area to tota l area
For OMA with outlet at project site outlet, include upstream OMA (Using example schematic in Form 3 -1, OMA A will include drainage from OMA C) 4 Pervious area infiltrati on rate (in/hr)
Use pervious area CN and antecedent moisture condition with Appendix C-3 of the TGO forWQMP
5 Maximum loss rate (in/hr)
F,,. = Item 3 * Item 4
Use area-weighted Fm from OMA with outlet at project site outlet, include upstream OMA (Using example schematic in Form 3-1, OMA A will include drainage from OMA CJ 6 Peak Flow from OMA (cfs)
Qp =Item 2 • 0.9 • (Item 1 - Item 5)
7 Time of concen tratio n adjustment factor for other OMA to DMAA n/a n/a site discharge point DMAB n/a n/a
Form 4.2-4 Item 12 OMA I Other OMA upstream of site discharge point {ff ratio is greater than 1.0, then use maximum value of 1.0) DMAC n/ a n/a 8 Pre-developed Q P at T, for OMA A: 9 Pre-developed Q P at T, fo r OMA B: 10 Pre-developed QP at T, for OMA C:
Qp = Item 6oMAA + [Item 6oMAB • (Item l oMAA - Item Qp = Item 6oMAB + [Item 6oMAA • {Item l oMAB - Item Qp = Item 6oMAc + [Item 6oMAA • (Item l oMAc - Item 5oMAa)/{ftem l oMAB - Item 5oMAa)* Item 70MAA/2] + 5oMAA)/(ltem l oMAA • Item 5oMAA)* Item 7oMAB/,j + 5oMAA)/(ftem l oMAA - Item 5oMAA)* Item 70MAcJ1] + {Item 6oMAc • (Item l oMAA - Item 5oMAc)/(ltem l oMAc - [Item 6oMAC • (Item l oMAB • Item 5oMAc)/{ftem l oMAc - [Item 6oMAB • (Item l oMAc - Item 5oMAa)/(ltem l oMAB Item 5oMAc) * Item 70MAA11] Item 5oMAc)* Item 70MABJ1} - Item 5oMAa)* Item 70MACJ2} 10 Peak runoff from pre-developed cond iti on confluen ce analysis (cfs): Maximum of Item 8, 9, and 10 (including additional farms as needed) 13 11 Post-developed QP at T, for OMA A: 12 Post-deve loped QP at T, for OMA B: Post-developed QP at T, for OMA C:
Same as Item 8 for post-developed values Same as Item 9 for post-developed values Same as Item 10 for post -developed
values
14 Peak runo ff from post-developed cond iti on conflu ence analysis (cfs): Maximum of Item 11, 12, and 13 (including additional forms as needed) 15 Peak runoff reduction needed to meet HCOC Requirement (cfs): Oe Hcoc = {Item 14 • 0.95)- Item 10 4-11
Water Quality Management Plan {WQMP)
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 neces sary.
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 criterion 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, implem en t 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 without effective mitigation and/or treatment .
4-12
Water Quality Management Plan {WQMP)
Form 4.3-1 Infiltration BMP Feasibility (DA 1)
Feasibility Criterion - Complete evaluation for each DA on the Project Site 1 Wou ld infiltration BMP pose significant risk for grou ndwater related concerns? Yes D No IS] Refer to Section 5.3.2.1 of the TGD for WQMP
If Yes, Provide basis: (attach)
2 Wou ld installation of infilt ration BMP significantly increase the risk of geot echnical hazards? Yes D No 0 (Yes, if the answer to any of the following questions is yes, as establi shed by a geotec hnical 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 setba ck . • A study cert ified by a geotechn ical professional or an available watershed study determine s that stormwater infiltration wou ld result in significantly increased risks of geotechnical hazards.
If Yes, Provide basis: (attach)
3 Would infiltr atio n of runoff on a Project site vio late downstream water rights? Yes D No IS] If Yes, Provide basis: (attach)
4 Is proposed infiltration facili ty located on hydrologic soil group (HSG) D soils or does the site geotechn ical investigat ion indicate presence of soil characteri sti cs, which support categorization as D soils? Yes O No IS] If Yes, Provide basis: (attach)
5 Is the design infiltration rate, after accounting for safety factor of 2.0, below proposed faci lity less than 0.3 in/hr (accounting for soil ame ndment s)? Yes D No IS]
If Yes, Provide basis: (attach)
6 Would on-site infiltration or reduction of runoff over pre-deve loped cond itions be partially or fully inconsistent with wat ershed management strateg ies as defined in the WAP, or impair beneficial uses? Yes D No IS] 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 1s "Yes": Yes D No IS] 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 D No IS] I/ yes, infiltration is permissible but is not required to be considered. Proceed to Form 4.3-2, Hydrologi c Source Control BMP.
If no, then proceed to Item 9, below.
9 All answe rs to Item 1 through Item 6 are "No": Yes IS] No D 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.
4-13
Water Quality Management Plan {WQMP)
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 app licab le HSC sha ll be provided except where they are mutually exclusive with eac h othe r, or with other BMPs. Mutual exclusivity may resu lt from overlapping BMP footprint s such that either wou ld be potentially feasib le by itself , but both cou ld 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 address HCOCs, feasibility of all app licable HSC must be part of demonstrating that the BMP system has been designed to retain the maximum feasible port ion of the DCV. Comp lete Form 4-3-2 to identify and calculate estimated retent ion volume from implementing site design HSC BMP. Refer to Section 5-4-1 in th e TGD for more detailed guidance .
Form 4.3-2 Site Design Hydrologic Source Conttrrol BMPs fDA 1) 1 Impl eme ntati on of Imper vious Area Dispersion BMP (i.e.
DA OMA
routing runoff from impervious to pervious areas), excluding DA OMA DA OMA BMP Type {Use impervious areas planned for routing to on-lot infiltration BMP Type BMP Type additional forms for BMP: Yes 0 No IS] If yes, complete Items 2-5; if no, more BMPs) proceed to Item 6
2 Total imper vious area draining to pervious area (ft 2) 3 Ratio of pervious area receiving runoff to imperviou s area 4 Retention volume achieved from impervious area 0 0 0
disper sion (ft3) V = ltem2 • Item 3 • (0.5/12), assuming retention of 0.5 inches of runoff
5 Sum of retention volume achieved from impervious area dispersion (ft 3): 0 V,motioo =Sum of Item 4 fo r all BMPs ..... ■ ••• ■ ■ •••• ■ • •••• ■ ■ •• ■ •• ■ ■ ■ ■ ■ ■ ••• ■ ••••• ■ •••••••• ■ ■ ••••••••• ■• ■ ■ ■ ■ ..... ■ ■• ■ ■• ■• ■ ■ ■ ■ ■ ■• ■ •JIii ■ ••• ■• ■ ■ •• ■ •• ■ •••• 6 Impl ementati on of Localized On-lot Infiltration BMPs (e.g. DA OMA on-lot rain gardens): Yes D No ~ If yes, complete Items 7- DA OMA DA OMA BMP Type (Use 13 for aggregate of all on-lot infiltration BMP in each DA; If no, BMP Type BMP Type additional forms for proceed to Item 14 more BMPs)
7 Ponding surface area (ft 2)
8 Ponding depth (ft)
9 Surfa ce area of amended soil/grave l (ft 2)
lO Average depth of amended soil/grave l (ft)
11 Average porosity of amended soil/grave l
12 Retention volume achieved from on-lot infilt rati on (ft3) 0 0 0 V ce1enr;o, = (Item 7 *item 8) + (Item 9 • Item 10 • Item 11) 13 Runoff volume retention from on-lot infiltr ation (ft 3): 0 V,,te,tioo =Sum of Item 12 for off BMPs 4-14
Water Quality Management Plan (WQMP)
Form 4.3-2 Site Design Hydrologic Sourice Comtral BMPs (DA 1) 14 I I • f • • ( DA OMA
mp ementatIon o evapotranspIratIon BMP green, DA OMA DA OMA BMP Type /Use brown, or blue roofs): YesD No [:gj BMP Type BMP Type additional forms for If yes, complete Items 15-20. If no, proceed to Item 21 more BMPs) 15 Rooftop area planned for ET BM P (ft 2)
16 Average wet season ET demand (in/day)
Use loco/ values, typical ~ 0.1
17 Daily ET demand (ft 3/day)
Item 15 • /Item 16 I 12)
18 Drawdown time (hrs)
Copy Item 6 in Form 4.2-1
19 Retention Volume (ft 3 ) 0 0 0
Vm,nrwn = Item 17 * {Item 18 / 24)
20 Runoff volume retention from evapotranspiration BMPs (ft 3 ): 0 V ,eteotioo =Sum of Item 19 for all BMPs ............................................................................... .......................... . ......................... ...........................
DA OMA
21 Implementation of Street Trees: Yes D No [:gj DA OMA DA OMA BMP Type {Use If yes, complete Items 20-2. If no, proceed to Item 24 BMP Type BMP Type additional forms for more BMPs)
22 Number of Street Trees 0 0 0
23 Average canopy cover over imper vious area (ft 2)
24 Runoff volume retention from street trees (ft 3)
0 0 0
Vm,nrion = Item 22 * Item 23 * /0.05/12) assume runoff retention of
0.05 inches
25 Runoff volume retention from street tree BMPs (ft 3): 0 V ,e1enr1on = Sum of Item 24 for all BMPs ............................................................................... .......................... . ......................... ...........................
DA OMA
26 Implementation of residential rain barrels/cisterns: Yes DA OMA DA OMA BMP Type {Use D No[:gj If yes, complete Items 27-28; If no, proceed to Item 29 BMP Type BMP Type additional forms for more BMPs)
27 Number of rain barrels/cisterns 0 0 0
28 Runoff volume retention from rain barrels/cisterns (ft 3 ) 0 0 0 V,erention = Item 27 * 3
............................................................................... .......................... . ......................... ........................... 29 Runoff volume retention from residential rain barrels/Cisterns (ft3): 0 V ce1em;o, =Sum of Item 28 for oil BMPs ................................................................................................................................................................... 30 Total Retention Volume from Site Design Hydrologi c Source Control BMPs: 0 Sum of Items 5, 13, 20, 25 and 29 4-15
Water Quality Management Plan (WQMP)
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 imp lementation 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). 4-16
Water Quality Management Plan (WQMP)
Form 4.3-3 Infiltration LID BMP - including underground BMPs {DA 1} 1 Remaining LID DCV not met by site design HSC BMP (ft 3) : 14,788 Vunmet = Form 4.2-1 Item 7 - Form 4.3-2 Item 30 DA 1 DMA DA DMA
BMP Type Use columns to the right to compute runoff volume retention BMP DA DMA BMP Type from proposed infiltration BMP (select BMP from Table 5-4 in TGD for Type Underground BMP Type (Use additiona l farms far WQMP)- Use additional forms for more BMPs Infiltrati on more BMPs)
2 Infiltration rate of underlying soils (in/ hr) See Section 5.4 .2 and 7.10 Appendix D of the TGD far WQMP for minimum requirements for assessment methods
3 Infiltr ation safety factor See TGD Section 5.4.2 and Appendix D 2.81 4 Design percolation rate (in/hr) P"'"'" = Item 2 / Item 3 2.52 5 Ponded wate r drawdown time (hr) Copy Item 6 in Form 4.2-1 48 6 Maximum pond ing depth (ft) BMP specific, see Table 5-4 of the TGD for WQMP for BMP design details
7 Ponding Depth (ft) daMP = Minimum of (1/12*/tem 4*Item 5) or Item 6 8 Infiltrating surface area, SAaMP (ft 2) 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, dm,d;a (ft) Only included in certain BMP type s, see Table 5-4 in the TGD for WQMP for reference to BMP design detail s lO Amended soil porosity
11 Grave l depth , dmed;a (ft) Only included in certain BMP types, see Table 5-4 of the TGD far WQMP for BMP design details
12 G I . rave porosity
13 Duration of storm as basin is fi lling (hrs) Typical ~ 3hrs ................. ......................................... ................... Iii••·············· Iii••···················· 14 Above Ground Retention Volume (ft 3 ) V,er,naan = Item 8 • {ltem7 + (Item 9 • Item 10) + {Item 11 • Item 12) + {Item 13 • {Item 4 / 12))] 15 Underground Retention Volum e (ft 3) Volume determined using 14,788 manufacturer's specifications and calculations
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 infi lt ration BMP: 100% Retention %= Item 16 I Form 4.2-1 Item 7 18 Is fu ll LI D DCV retained on-site with combina ti on of hydro logic source control and LID retent ion and infi ltration BMPs? Yes IZ] No D If yes, demonstrate conformance using Form 4.3-10; ff 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 far retention and infiltrat ion 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.
4-17
Water Quality Management Plan (WQMP)
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 sto rmwater. 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 wou ld not be achievab le 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 infiltrati on BMP (ft3):
Vunmer = Form 4.2-1 Item 7 - Form 4.3-2 Item 30 - Form 4.3-3 Item 16 DA OMA
BM P Type(s) Compute runoff volume retent ion from proposed DA OMA DA OMA BMP Type harvest and use BMP /Select BMPs from Table 5-4 of the TGD for BMP Type BMP Type (Use additional farms WQMP) - Use additional farms for mare BMPs for more BMPs)
2 Describe cistern or runoff detention facility
3 Storage volume for proposed deten tion 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 va lues, typical ~ 0.1 in/day
6 Daily water demand (ft3/day) Item 4 * {Item 5 I 12)
7 Drawdown time (hrs) Copy Item 6 from Form 4.2-1
8Retenti on Volume (ft 3)
Vm,nr;on = 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 ...................... .......................................................................... ................ lO Is the full DCV reta ined with a combinat ion of LID HSC, retention and infiltration, and harvest and use BMPs? Yes [SJ No0 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 o 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. 4-18
Water Quality Management Plan {WQMP)
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 summ arize 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 vo lum e based biotreatment BMP (e.g. bioretention w/underdrains); • Use Form 4.3-7 to comp ute biotreatment in large vo lume based biotreatment BMP (e.g. constructed wetlands); • Use Form 4.3-8 to compu te sizing criteria for flow-based biotreatment BMP (e.g. bioswales) Form 4.3-5 Selection and Evaluation of Biotreatment BMP (DA l) 1 Remaining LID DCV not met by site design HSC, List pollutants of concern Copy from Form 2.3-1. infiltration, or harvest and use BMP for potential
biotreatment (ft 3): Form 4.2-1 Item 7 - Form 4.3-2
Item 30 - Form 4.3-3 Item 16- Form 4.3-4 Item 9
Volume-based biotreatment Flow-based biotreatment
2 Biotreatment BM P Selected Use Forms 4.3-6 and 4.3-7 to compute treated volume Use Form 4.3-8 to compute treated volume (Select biotreatment BMP{s) D Bioretention with underdrain necessary to ensure all pollutants of D Planter box with underdrain D Vegetated swale concern are addressed through Unit D Constructed wetlands Ovegetated filter strip Operations and Processes, described
Owet extended detention D Proprietary biotreatment in Tobie 5-5 of the TGD for WQMP} D Dry extended detention
3 Volume biotreated in volume based 4 Compute remaining LID DCV with 5 Remaining fraction of LID DCV for biotreatment BMP (ft 3): Form 4.3- implementation of volume based biotreatment sizing flow based biotreatment BMP:
6 Item 15 + Form 4.3-7 Item 13 BMP (ft 3): Item 1 - Item 3 % Item 4 I 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 biotreotment of remaining percentage of unmet LID DCV (Item 5}, for the project's precipitation zone (Form 1-1 Item l} 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: D 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. 4-19
Water Quality Management Plan (WQMP)
II
Form 4.3-6 Volume Based Biotreatment (DA 1)-
,,
Bioretention and Planter Boxes with Underdrains
DA DMA
Biotreatment BMP Type DA DMA DA DMA BMP Type
/Bioretention w/ underdrain, planter box w/ underdrain , other BMP Type BMP Type {Use additional forms comparable BMP) 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 infi ltration rate Typical~ 5.0
3 Amended soil infi ltration safety factor Typical~ 2.0 4 Amended soil design percolation rate (in/hr ) P.,,,,, = Item 2 / Item 3
5 Ponded water drawdown time (hr) Copy Item 6fram 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) daw1P = Minimum of /1/12 * Item 4 * Item 5) or Item 6
8 Amended soil surface area (ft 2)
9 Amended soil depth (ft) see Table 5-6 of the TGD for WQMP for reference to BMP design detail s
l O Amended soil porosity, n
11 Grave l depth (ft) see Table 5-6 of the TGD for WQMP for referen ce to BMP design details
12 G I . rave porosity, n
13 Duration of storm as basin is filling (hrs) Typical ~ 3hrs 14 Biotreated Volume (ft 3) Vo,o,,.ored = Item 8 * {{Item 7 / 2) + /Item 9 • Item 10) +{Item 11 * Item 12) + {Item 13 * {Item 4 / 12))] 15 Total biotreated volume from bioretent ion and/or planter box with underdrains BMP:
Sum of Item 14 far all volume-based BMPs included in this form 4-20
Water Quality Management Plan (WQMP)
Form 4.3-7 Volume Base-d Biotreatment U)A 1) -
Constnacted Wetlands and Extended Detention
DA DMA
Biotreatment BMP Type DA DMA BMP Type
Constructed wetlands, extended wet detention, extended dry detention, BMP Type (Use additio nal forms or other comparable proprietary BMP. if BMP includes multiple modules (e.g. forebay and main basin), provide separate estimates for storage for more BMPs) and pollutants treated in each module. Fore bay Basin Fore bay Basin 1 Pollutants addressed wit h 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 forWQMP
2 Bottom width (ft)
3 Bottom length (ft)
4 Bottom area (ft 2) A borram = Item 2 * Item 3
5 Side slope (ft/ft)
6 Depth of storage (ft)
7 Water surface area (ft 2)
A.u,tace =(Item 2 + (2 * Item 5 * Item 6)) * (Item 3 + (2 * Item 5 * Item 6)) 8 Storage volume (ft 3) 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 I 3 * {Item 4 + Item 7 + (Item 4 * Item 7) 0 0.5} 9 Drawdown Time (hrs) Copy Item 6 from Form 2.1
10 * Outflow rat e (cfs) OaMe = (Item Bta,ebay + Item B bo,;n ) I {Item 9 3600} 11 Duration of design st orm event (hrs)
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ............................................ ........................................... 12 Biotreated Volume (ft 3)
V b;at,eared = (Item B ta,eba y + Item B ba,;n ) +( Item 10 * Item 11 * 3600} 13 Total biotreated volum e from construc ted wet lands, extended dry det ention, or extended wet detention :
(Sum of Item 12 for all BMP included in plan)
4-21
Water Quality Management Plan (WQMP)
Form 4.3-8 flow Based Biotreatment fDA ll)
DA DMA
Biotreatment BMP Type DA DMA DA DMA BMP Type
Vegetated swale, vegetated filter strip, ar ather comparable proprietary BMP Type BMP Type (Use additional forms BMP
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 coeff icient
5 Bottom width (ft)
b., = (Form 4.3-5 Item 6 • Item 4) / {1.49 • Item 2"1•67 * Item 3"'05) 6 Side Slope (ft/ft)
BMP specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details
7 Cross secti onal area (ft 2)
A = /Item 5 • Item 2) + (Item 6 * Item 2"2)
8 Water quality flo w velocity (ft/sec)
V = Form 4.3-5 Item 6 / Item 7
9 Hydrau lic residence time (min)
Pollutant specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details
10 Length offlow based BMP (ft)
L = Item 8 * Item 9 * 60
11 Water surface area at water quality flo w depth (ft 2) SA,op = (Item 5 + (2 * Item 2 * Item 6)) * Item 10
4-22
Water Quality Management Plan (WQMP)
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 /o r biotreatment BMP. The bottom line of the form is used to describ e 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 out let, then complete additional versions of this form for each outlet.
Form 4.3-9 Conformance Summary and Alternative
II
Compliance Volume Estimate (DA 1)
l 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 contro l LID BMP (ft 3): 0 Copy Item 30 in Form 4.3-2 3 On-site retention with LID infiltration BMP (ft 3): 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 criter ia are achieved if answer to any of the fo llowing is "Yes":
• Full retention of LID DCV with site design HSC, infiltration , or harvest and use BMP: Yes [8J No □ If yes, sum of Items 2, 3, and 4 is greater than Item 1 . Combination of on-site reten tion BMPs for a portion of the LID DCV and volume-based biotreatment BMP that address all pollut ants of concern for the remaining LID DCV: Yes D No 0 If yes, a) sum of Items 2, 3, 4, and 5 is greater than Item 1, and Items 2, 3 and 4 are maximized; orb} Item 6 is greater than Form
4.3--5 Item 6 and Items 2, 3 and 4 are maximized
. On-site retention and infi ltrat ion is determined to be infeasible and biotreatment BMP provide biotreatment for all pollutants of concern for full LID DCV: Yes O No D
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 comp liance plan. Check box that describes the scenario which caused the need for alternative comp liance:
. Combina tion of HSC, retention and infi ltration, 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 , V a1r = (Item 1-ltem 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 faci lit y: □ Attach appropriate WAP section, including technical documentation, showing effectiveness comparisons for the project site and regional watershed
4-23
Water Quality Management Plan (WQMP)
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 ofwaterbodies 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):
2 On-site retention with site design hydrologic source control, infiltration, and harvest and use LID BMP (ft 3): 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 (Form 4.2-2 Item 4 * 0.95} - Form 4.2-2 Item 1
3 Remaining volume for HCOC
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 hydralogic analysis showing how the additional volume would be retained during a 2-yr storm event for the regional watershed)
volume capture (ft3): Item 1-
Item 2
5 If Item 4 is less than Item 3, incorporate in-stream controls on downstream waterbody segment to prevent impacts due to hydromodification D Attach in-stream contra/ BMP selection and evaluation to this WQMP 6 Is Form 4.2-2 Item 11 less than or equal to 5%: Yes D No D 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 D
BMP upstream of a waterbody segment with a potential HCOC may be used to demonstrate increased time of concentration through hydragraph 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 D • 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 D 7 Form 4.2-2 Item 12 less than or equal to 5%: Yes D No D 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 D
BMPs upstream of a waterbody segment with a potential HCOC may be used ta 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 D 4-24
Water Quality Management Plan (WQMP)
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).
4-25
Ii
Water Quality Management Plan (WQMP)
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)
Reponsible lnspection/M a intenance
Minimum
BMP Frequency of Party(s) Activities Required Activities Inspect for trash and debris . Clean up trash and debris if Monthly needed .
Annually
prior to
Underground Chambers Property Inspect for sediment and damage . Clean and repair per October 1st Owner manufacturer's recommendations . 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 Within 3
The Property Owner will provide BMP educational month s of Owners , Tenants & Property information materials to all employees and occupants of hire and Occupants on Owner Stormwater BMPs site . annually
thereafter
Property Inspect for "No Littering" signs to prevent pollution to Activity Restrictions stormwater BMP. Inspect to ensure only certified persons Daily Owner apply fertilizer and pesti cide.
Landscape Management Prop erty Owner will ensure landscaping and irrigation is properly maintained . Fertilizers and pesticides be applied by Weekly BMPs Owner certified persons .
BMP Maintenanc e Property Inspect, clean, repair and maintain BMP. Monthly Owner 5-26
Water Quality Man agement Plan {WQMP)
Local Water Quality Property Local water quality ordinances shall be followed per local As needed Ordinances Owner agency.
Litter/Debris Contro l Property Inspect and clean site for trash and debris Weekly Program Owner Within 3
Property Educationa l materials on general housekeeping practices months of Emp loyee Training for the protection of storm water quality shall be provided hire and Owner to employees. annually thereafter
Catch Basin Inserts Property Inspect for trash, debris and damage Monthly Owner Vacuum Sweeping Property Parking lots shall be swept and vacuumed Mont hly Owner NPDES Permits Property Approva l and implementation of this WQMP and SWPPP. On going Owner Prov ide storm Inspected storm dra in system Annua lly, dra in system Property stenci ling and signage for clarity and legibility. Relabel as repair as stenciling and Owner needed. needed signage Trash Storage Area Property Inspect, clean, and repair as needed. As needed Owner Use Efficient Irrigation Property Insta ll irrigation systems with timing devices to avoid System and Landscape Owner overwatering. Repair as needed Week ly Design
Finish grade of
landscaped areas at a
minimum of Property Landscape areas will be a m inimum of 1 inch below Once 1-2 inches be low top of Owner adjacent impervio us areas. curb, sidewa lk, or
pavement
5-27
Section 6 WQMP Attachments
6.1. Site Plan and Drainage Plan
Include a site plan and drainage plan sheet set containing the follow ing minimum information:
Project location
Site boundaiy
Land uses and land covers, as app licab le
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
6.2 Electronic Data Submittal
Minimum requirements include submittal of PDF exhibits in addition to hard cop ies. Format must not require specialized software to open . If the local jurisdiction req uir es spec ialized electronic document formats (as described in their local Local Implementation Plan) , this sect ion will describe the contents (e.g., layerin g, nomenclature , geo-referencing , etc.) of these documents so that they may be interpreted efficien tly and accurately.
6.3 Post Construction
Attach all O&M Plans and Maintenance Agreements for BMP to the WQMP.
6.4 O&M Plan
o BMP Educationa l Materials
Maintenance Agreement(s)
Activity Restriction - C, C&R's & Lease Agreements
Other Supporting Documentation
San Bernardino County Watershed Mapping Tool Data
NOAA Rainfall Data
Soils information
6-1
Appendix 6.1 - Site Plan and Drainage Plan
6.1 F~Ol'.:.:;E[IPROJEC I IM~ituv n •rn! ~
OJ .,.o,.:
(!] ... ,i:1,,_
PROPOSED SOURCE CO/'ITROL SMP'S
0 '7'1!1"r,'_ \ 'l,Jl(n,"" t lM.,_, t:i:•U/
0 ••,<f •4"'-H•O: t --....rl />C·J>J
0 ... (llw.l'¥.l~W .U,/fJ,'-'<.{ ''-l."•"I
0 r ... .,., , sr., .. ,..,., • .,.,'l:,.'-".t 1•,:- •J1 @ <>!.U<• ( Slt//W ~'-" 1,H•t: 1'4•U J
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":tt.-,- ~-•~""~ .. ~_,.,,_,.. ,, n., ,..,.,
• ~;J.T.,~ ~;;;-= 'l':.11'-;.')".J,l'm,;g~:~,, ...
PROPOSED SITE OESIGtl BMP"S
e ~!!rC:lo~•1•'('S('"'!"l.....,.,, ,J(L-,~J
G) ao~- .. .....,~ ru.-"'ll.s /'Z)..r>!
@ 11'\:V,tn,;;,,iv, 1,.,_,: 1
@ sr.,;,,r,,..., s, ~..a ,in- •J!
@ r:;, :;,11,r •~Vf<l /.-l'•J: J
PROPOSED TREAThlEIIT CQtlTROl. SMP'S
&, w f'U,\"t.,,...,_~1'11; .. ,n.,
CALIFORNIA
I
HtiP I:~-= . . "1 I~ Ji Ji
' \_ ~· : ;; ~ ~.
\ ~··':_.~
, ,;, I Hip 11s -······" • 11 t/ A ·
', tl ~~- t\ f~
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LEGEND
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CITY OF SAN BERNARDINO CA
WO MP NOTES
tJ <f>'\(1'~,:U-S ~• •ll::J:.et /U °t,l'JlitJ1> 1,U,./ r-am.,:~ .-r,; ,..111'\_,..,, <1.,.,, • ., ~o,,-:,,u~ ,r 'f<'IH'WJW r,'llt,'tllc "••<t.,11,/1> " ,'I/( " ,;,,,;;n,en.,, "'cf•
·----· !. ,_,._
FINAL W.O.M.P.
1380 S *E- STREET
SAN BERIIARDl /10 CA 92-108
I~ I
Appendix 6.2 - Electronic Data Submittal
6.2 Note: A eel 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 San Bernardino - WAP Repott Page I of I
WQMP Project Report
County of San Bernardino Stormw ater Progr am
Santa Ana River Watershed Geodatabase
Monday , March 21 , 2022
Notff The information provided in this report and on the Stormwat er Geodatabase for the County of San Be rnardino Stormwaler Program is intended to provide basic guidance in the preparatio n of the applicant's Water Quality Manageme nt Plan (WQMP) and should not be relied upon without independent verification Project Site Parcel Number(s) :
Project Site Acreage :
HCOC Exempt Area:
Closest Receiving Waters :
(App lican t lo ver ily based on local d1ainage lac1hties and topogr aphy.) 014131202, 0141 25203, 014125302
12.556
Yes. Verify that the project is completely with the HCOC exemption area.
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?
Project Site Onsite Soil Group(s):
Environmentally Sensitive Areas within 200':
Groundwater Depth (FT):
Parcels with potential septic tanks within 1000':
Known Groundwater Contamination Plumes within 1000':
Studies and Reports Related to Project Site :
No
A
SAN BERNARDINO KANGAROO RAT
-140
No
No
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
http:! /perm itrack.sbcounty .gov/wap _report/report.asp?septic=No&SECA REA=SA N BER ... 3/21/2022 3/22/22, 9:15 AM Precipitation Frequency Data Server
NOAA Atlas 14, Volume 6, Version 2
Location name: San Bernardino , California , USA•
Latitude: 34.0736°, Longi tude : -117 .2948°
Elevation : 976.81 w•
• source: ESRI Maps
" source: USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
Sanja Perica, Sarah Dietz, Sarah Heim, Lillian Hiner, Kazungu Maitaria, Deborah Martin, Sandra Pavlovic, lshani Roy, Carl Trypaluk, Dale Unruh, Fenglln Yan, Michael Yekta, Tan Zhao, Geoffrey Bonnin, Daniel Brewer, Li-Chuan Chen, Tye Parzybok, John Yarchoan NOAA, National Weather Service, Silver Spring, Maryland PF tabul ar I .E.L9 @Rhical I MaJ;!s & aerials
PF tabular
I PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 !Duration II
Average recur rence interval (years)
1 II 2 II 5 II 10 II 25 II 50 II 100 II 200 II 500 II 1000 E
0.102 0.133 0.174 0.208 0.254 0.291 0.328 0.367 0.421 0.463 (0.085-0.123) (0.110-0.161 (0.144-0.212) (0.171-0.255) 0.202-0.324) (0.226-0.378) (0.249-0.437) (0.271-0.504) (0.297-0.602) (0.315-0.686) E
0.146 0.190 0.249 0.298 0.365 0.417 0.470 0.526 0.603 0.664 (0.121 -0.177) (0.158-0.231) (0.207-0.304) (0.245-0.366) (0.290-0.464) (0.324-0 .542) (0.357-0.627) (0.388-0.722) (0.426-0.863) (0.452-0 .984) E
0.176 0.230 0.301 0.360 0.441 0.504 0.569 0.636 0.729 0.802 o.147-0.214) 0.191-0.2001 o.250-0.367) l(0.296-0.443) 0.350-0.561) o.392-0.655) 0.431.0.758) l(o.469-0.013 (0.51 5-1.04) (0.547-1 .1 9) I30-min I 0.262 0.342 0.449 0.536 0.656 0.750 0.846 0.947 1.09 1.1 9
0.219-0.318) (0.285-0.416) 0.372-0.546) (0.441-0.658) (0.521-0.834 0.583-0 .974) (0.642-1.13) (0.698-1 .30) (0.766-1.55) (0.813- 1.77) I60-min I 0.379 0.495 0.648 0.774 0.948 1.08 1.22 1.37 1.57 1.73 (0.316-0.460) (0.411-0.601) (0.537-0.789) ( 0.637-0.951) (0.753-1.21) (0.842-1 .41) (0.927-1.63) (1 .01 -1.88) (1 .11 -2.24) (1 .18-2.56) B
0.544 0.700 0.905 1.07 1.30 1.48 1.66 1.85 2.11 2.31
(0.453-0.660) (0.582-0.850) (0.751-1.10) (0.883-1.32) (1.04-1.66) (1 .15-1.93) (1.26-2 .22) (1.36-2.54) (1.49-3.02) (1 .57-3.42) B
0.670 0.857 1.10 1.30 1.58 1.79 2.01
1 2.23
I
2.53 2.77
(0.558-0.812) (0.712-1.04) (0.914-1 .34) (1.07-1.60) (1.25-2.01) (1.39-2 .33) (1.52-2.67) : (1.64-3.06) (1.79-3.62) (1 .89-4.10) B
0.929 1.18 1.52 1.79 2.16 2.45 2.74 3.03 3.44 3.75
(0.774-1 .1 3) (0.985-1.44) (1 .26-1.85) (1.47-2 .20) (1 .72-2.75) (1.90-3.18) (2.08-3.65) (2.24-4.16) (2.43-4.92) (2.55-5.56) ~
1.23 1.57 2.02 2.39 2.89 3.27 3.65 4.05 4.58 4.99
(1.02-1.49) (1 .31-1 .91) ( 1.68-2.4 7) (1.97-2.94) (2.29-3.67) (2.54-4.24) (2.77-4.87) (2.98-5.55) (3.23-6.55) (3.40-7.40) ~ I (1.!~,388) I
2.11 2.74 3.25 3.93 4.46 4.99 5.53 6.26 6.83
(1 .87-2.44) (2.41-3.17) (2.84-3. 78) (3.33-4.74) (3.70-5.48) (4.04-6 .28) (4.36-7.16) (4.74-8.45) (5.00-9.52) ~
1.98 2.60 3.42 4.09 5.00 5.69 6.41 7.14 I 8.13
I
8.90 (1.75-2.28) (2.30-3.00) (3.02-3.96) (3.58-4 .77) (4.23-6.02) (4.72-7.00) (5.19-8.07) (5.63-9.24) : (6.15-11.0) (6.51-12.4) ~
2.11 2.81 3.75 4.53 5.58 6.41 7.25 8.13 9.32 10.3
(1.87-2.43) (2.49-3.25) (3.31 -4.34) (3,96-5 .28) (4.73-6.73) (5.32-7.88) (5.87-9 .13) (6.40-10.5) (7 .06-12.6) (7.51-14.3) I 4-day I (1.; 9~2559)
3.03 4.07 4.94 6.13 7.07 8.03 9.03 10.4 11.5
(2.68-3.49) (3.59-4.71) (4.32-5.76) (5.19-7.39) (5.86-8 .69) (6.50-10.1) (7.12-11.7) (7.88-14.0) (8.41-16 .0) ~
2.57 1
3.51 I
4.78 5.83 7.28 8.43 9.61 10.8 12.5 13.9
(2.28-2.97) : !3 .11-4.05) (4.21-5.53) (5.10-6.79) (6.17-8.77) (6.99-1 0.4) (7.78-12 .1) (8.54-14.0) (9.50-16.9) (10.2-19.4) I10-day I 2.79 3.84 5.25 6.43 8.07 9.37 10.7 12.1 14.1 15.6 (2.47-3.21) (3.39-4.43) (4.63-6.08) (5.63-7.50) (6.84-9.73) (7.77-11.5) (8.67-13.5) (9.55-15. 7) (1 0.6-19.0) (11 .4-21.8) I 2o-day II (3.~1~~92) II !4.1~:5
4 47) I
6.55 1
8.08 II (8.:5~1
2 2.3) I
11.9 1
13.7 11 (12\\~ .1) 11 i13\~2~ .5) 11 (1/8~2~ .2) (5.78-7.58) : (7.07-9.42) (9.89-14 .7) : !11.1-17.2) I30-day I 4.02 5.61 7.78 9.61 12.2 14.2 16.4 18.6 21.8 24.3 (3.56-4.64) (4.96-6.47) (6.86-9.00) (8.41-11.2) (10.3-14.7) (1 1.8-17.5) (13.3-20 .6) (14.7-24.1) (16.5-29.4) (17.8-34.0) I45-day I 4.81 6.68 9.24 11.4 14.5 16.9 19.5 22.2 26.0 29.1 (4.26-5.54) (5.90-7.70) (8.15-10.7) (9.98-13.3) (12.3-17.4) (14.0-20.8) (15 .8-24.6) (17.5-28.8) (19.7-35.1) (21 .3-40.6) I60-day I 5.62 7.74 10.7 13.1 16.6 19.4 22.4 25.5 29.9 33.4 (4.98-6.48) (6.85-8.93) (9.40-12.3) (11.5-15.3) (14.1-20.0) (16.1-23.9) (18.1-28.2) (20.1-33.0) (22.6-40.3) (24.4-46 .6) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS).
Numbe rs in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interva l. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates al upper bounds are not checked again st probable maximum precipitation (PMP) estimates and may be higher than curren tly valid PMP values.
Please refer to NOAA Atlas 14 document for more information .
Back to TOR
PF graphical
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.0736&Ion=-1 17.2948&data=depth&units=english&series=pds I
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Latitude : 34 .0736°, Longitude : -117 .2948°
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NOAA Atlas 14. Volume 6. Version 2 Created {GMT): Tue Mar 22 16:15:54 2022 Back to TOR
Maps & aerials
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https ://hdsc.nws. noaa .gov/hdsc/pfds/pfds _printpage .html ?lat=34 .0736&Ion=-117 .2948&data=depth&un its=engl ish&series=pds 2/4 3/22/22, 9:15 AM
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https ://hdsc .nws .noaa .gov/hdsc/pfds/pfds _printpage . html?lat=34 .0736&Ion=-117 . 2948&data=depth&u nits=english&series=pds 3/4 3/22/22 , 9:15 AM Precipitation Frequency Data Server
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National Weather Service
National Water Center
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Silver Spring , MD 20910
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https ://hdsc .nws .noaa .gov/hdsc/pfds/pfds _printpage. html ?lat=34 .0736&Ion=-117 .2948&data=depth&u nits=english&series=pd s 4/4 SOILS SOUTHWEST, INC.
SOILS, M1\TERIALS /\ND ENVIRONMENT1\L ENGINEERING CONSULT!\NTS 897 VIA LATA, SUITE N • COLTON, CA 92324 • (909) 370 -0474 • (909) 370-0481 • FAX (909) 370-3156 lf.leDJOD"l of Geoteiclllnica D 11:.o/illlUiAlnOffllS OIIHU §ouo s DnlfiUrn1fl:fion ·n·estina for WcQMIH3 ,HIP §U.01n11lwc11ter IDDsaDo~a• §Y§ilmn B)e§ian11 Planned EV True!< Leasing Service Facility
1380 S. E Street
San Bernardino, California
APN: 0141-252-08
Project No. 22051-F/BMP
October 20, 2022
Prepared for:
Watt Ev, Inc.
% Mr. Emil Youssefsadeh
222 North Pacific Coast Highway
El Segundo, CA 90245
[email protected]
Established 1984
SOILS SOUTHWEST, INC.
5011.S. M.'\lERI/\LS ND ENVIRONMENT1\L ENGINEl:RING CONS LTI\NTS 897 VIA LATA, SUITE N, COLTON, CA 92324 , (909) 370-0474 • (909) 370-0481 , FAX (909) 370·3·156 October 20, 2022
WattEV S81, Inc.
222 North Pacific Coast Highway
El Segundo, CA 90245
Attention: Mr. Emil Youssefsadeh
Subject: Report of Geotechnical Evaluations and
Project No. 22051-F/BMP
Soils Infiltration Testing for WQMP-BMP Stormwater Disposal System Design Planned EV Truck Leasing Service Facility
Reference:
1380 S. E Street
San Bernardino, California
APN: 0141-252-08
Proposed Site Plan Provided by Joseph E. Bonadiman & Associates Dear Mr. Youssefsadeh,
Presented herewith is the report of (i) Geotechnical Evaluations and (Ii) Soils Infiltration Testing for WQMP-BMP Stormwater Disposal System Design for the site of the proposed EV Truck Leasing Service Facility to be constructed at 1380 S. E Street, San Bernardino, California. In absence of detailed development plans, the recommendations included should be considered as ,ipreliminary" and subject to revision following detailed development plans review.
Based on review of the referenced site plan, it is understood that the subject development will primarily include a non-habitable one or two-story office building along with open-air concrete paving and parking stalls with electrical vehicle charging bays and 25 to 40-foot-wlde drive approaches. In absence of detailed development plans review, the subject structure is assumed of concrete framed, concrete block, and/or conventional wood frame and stucco construction with concrete slabs-on-grade. Supplemental construction is anticipated to include paving for truck traffic, trucks/autos parl{ing, on-site driveways along with the installation of an underground WQMP-BMP stormwater disposal chamber system .
Based on test explorations and geotechnical investigations completed the following site soils characteristics are described:
(i) The soils encountered primarily consist of upper loose to medium dense dry to damp silty fine to medium coarse sands varying in depth from approximately 3 to 5 feet below grade, overlying deposits of medium dense to dense gravely medium to coarse sands with pebbles, cobbles, and rocks to the maximum depth of 31 feet explored . Descriptions of the soils encountered are provided in the attached Log of Borings. (ii) With historical groundwater at approximately 9 feet below grade, the site soils are considered susceptible to seismically induced sell liquefaction and moderately high total soil differential settlements.
(iii) Although the site is not identified to be located within an A-P Special Studies Zone, it is, however, located 0.16-mile away from the nearest San Jacinto fault thereby requiring appropriate structural design based on the design parameters descried herein. [email protected]
Established 1984
WallEV, Incl 1380 S. E Slreet., San Bernardino, CA 22051-F/BMP (iv) Following review of the online FEMA National Flood Hazard Layer FIRMette map, it is understood that the project site Is classified as Zone X, 0.2% Annual Chance of Flood Hazard Area.
(v) For design, anticipated structural loadings of 40 kips and 4 kif are assumed for isolated foundations and continuous spread footings. respectively . Moderate site preparations and grading shoqld be expected with the proposed development. (vi) For the planned development, it is our opinion that for adequate structural support moderate site preparations and grading sl,ould be considered. In addition, to minimize potentials for total and differential settlements to foundations and concrete slabs-on-grade, use of a layer of biaxial geogrid such as Tensar BX1100 or approved equal overlain by a 2-foot-t11icl< layer of clean 2 to 3-inch diameter crushed rock to minimize potential for settlement due to soil liquefaction.
Based on evaluations completed at this time, it is our opinion that from a geotechnlcal viewpoint, the site should be considered suitable for the proposed development considering the recommendations are included.
Final grading and detailed development plans review is suggested to verify the applicability of the assumptions used in preparing tills report. This report has been substantiated by subsurface explorations and mathematical analyses made in accordance with the generally accepted engineering principles, including those field and laboratory testing considered necessary in these circumstances.
We offer no other warranty , express or implied.
Respectfully submitte
Soils So h st, In
c:=,a....
Maloy upta, CE
Solis Soultlwest, Inc. October 20, 2022
Patricia Partas, P.E. (WA), PMP
John Flippin
Project Coordinator
WattEV, Inc./ 1380 S. E Street, San Bernardino, CA 22051-F/BMP
1.0 Introduction
This report presents the findings, opinions, and recommendations for (i) Geotechnical Evaluations and (ii) Soils Infiltration Testing for WOMP-BMP Stormwater Disposal System Design for the site of the proposed EV Truck Leasing Service Facility to be constructed at 1380 S. E Street, San Bernardino, California. The WQMP-BMP stormwater disposal infiltration rates are included in Section 6 of this report.
1.1 Site Description
The semi-rectangular shaped area of the panned development measuring approximately 270 feet x 598 feet in plan dimensions is currently vacant and undeveloped with old existing asphalt pavement and abandoned concrete slabs. The site is bounded by San Bernardino Municipal Water campus to the north, by Sherwinn Williams commercial retail on the south, by South E Street on the east, and by northbound Interstate Highway 215 on the west Overall vertical relief within the property is currently unknown; however, based on site reconnaissance sheet flow from incidental rainfall appears to flow gently towards the south and southwest. Except for weeds, old concrete slabs, and asphalt pavement along with scattered debris, presence of no other significant features was noted.
1.2 Proposed Development
No detailed development plans are available for review; however, based on the project site plan supplied, it is understood that the subject development will primarily include a 2660 sf non-habitable one or two-story office structure. In absence of detailed development plans review, the subject structure is assumed of concrete framed, concrete block and/or conventional wood frame and stucco construction with concrete slabs-on-grade . Supplemental construction is anticipated to include paving for truck traffic, trucks/autos parking, on-site driveways along with the installation of an underground WOMP-BMP stormwater disposal chamber system. For design , anticipated structural loadings of 40 kips and 4 kif are assumed for isolated foundations and continuous spread footings , respectively .
Moderate site preparations and grading are anticipated as described in the following sections The purpose of the geotechnical evaluations is to determine the nature and engineering properties of the near grade and subsurface soils and to provide recommendations for foundation design, concrete slab-on-grade, paving, parking, site preparations and grading, and inspection during construction .
The recommendations contained reflect our best estimate of the soils' conditions as encountered and as described . It is not to be considered as a warranty of the soils for other areas or for the depths beyond the explorations completed at this time.
The recommendations supplied should be considered valid and applicable when the following conditions are observed :
i. Pre-grade meeting with the contractor, public agency , and the soils engineer , ii. Excavated bottom inspections and verifications of excavated bottoms prior to engineered fill soils placement,
iii. Continuous observations and testing during site preparation and mass grading, iv. Observation and inspection of footing trenches prior to steel and concrete placement , v. Plumbing trenches backfill placement prior to concrete slabs-on-grade placement, vi. On and off-site utility trenches backfill observations testing and verifications, and vii. Consultations as required during construction or upon your request.
In absence of precise grading plan, the geotechnical recommendations supplied should be considered "preliminary". Supplemental recommendations may be warranted following development details review.
Soils Southwest, Inc. October 20, 2022 Page 4
WattEV , Inc./ 1380 S. E Street , San Bernardino , CA 22051-F/BMP
2.0 Scope of Services
Geotechnical evaluations included subsurface explorations, soil sampling, necessary laboratory testing, engineering analyses, and the preparation of this report. Being beyond our scope of services, no geologic evaluations or Phase 1 Environmental Site Assessments are included. Reports of such will be provided upon request.
In general, our Scope of Services included the following :
o Field Explorations
Our scope of work included site reconnaissance and review of the referenced site plan supplied, supplemented with six (6) test borings (B-1 to B-6) explored by using a Hollow-Stem Auger (HSA) drill rig advanced to maximum depth of 31 feet below grade. Additional two (2) infiltration test borings were also made advanced to maximum depth of 12 feet (P-1 & P-2) below grade for determination of WOMP-BMP stormwater infiltration rates considering the groundwater depth at
95.3 feet as measured on November 29, 2010.
Prior to test explorations an underground utility clearance was established with Underground Service Alert (USA) of Southern California to avoid possible subsurface lifeline obstruction and rupture. Following necessary soil sampling and in-situ testing, the test excavations were backfilled with local soils using minimum compaction effort. Collected samples were subsequently transferred to our laboratory for necessary geotechnical testing. Approximate test boring locations are shown on the attached Plate 1.
During excavations, the soils encountered were continuously logged and bulk and undisturbed samples were procured. Collected samples were subsequently transferred to our laboratory for necessary geotechnical testing. Description of the soils encountered is shown on the attached Log of Borings in Appendix A.
o Laboratory Testing
Representative bulk and undisturbed site soils were tested in laboratory to aid in the soils' classification and to evaluate relevant engineering properties pertaining to the project requirements The laboratory tests completed include the following :
o In-situ Moisture Contents and Dry Density (ASTM Standard 02216), • Maximum Dry Density and Optimum Moisture Content (ASTM Standard 01557) , • Direct Shear (ASTM Standard 03080) ,
a Soil Consolidation (ASTM Standard 02435) ,
• Soils Sieve Analysis (ASTM 0422), and
e Soils Sand Equivalent , SE (ASTM 02419).
No soils chemical analysis is currently included. Post-grading soil chemical analyses are suggested including pH, sulfate , chloride, and resistivity. Such analyses should be performed upon request prior to actual construction and concrete pour.
Description of the test results and test procedures used are provided in Appendix B of this report. o Based on the test explorations , soil sapling, laboratory testing , and engineering analyses completed at this time, our preliminary recommendations for design of foundations, slab-on-grade, paving and parking, site preparations and grading , and monitoring during construction are described.
Preparation of this report for initial use by the project design professionals. The recommendations herein should be considered as "preliminary" and subject to revision and upgrading following review of the final grading and development plans, when supplied.
Soil s Southwest, Inc. October 20, 2022 Page 5
WallEV , Inc./ "1380 S. E Street. , San Bernardino, CA 22051-F/BMP
3.0 Geotechnical Conditions
3.1 Subsurface Conditions
The soils encountered, in general, primarily consist of upper loose and disturbed dry to damp silty fine to medium coarse sands varying in depth from approximately 3 to 5 feet below grade, overlying deposits of medium dense to dense gravely medium to coarse sands with pebbles, cobbles, and rocks to the maximum depth of 31 feet explored. Descriptions of the soils encountered are provided in the attached Log of Borings (B-1 to B-6). Based on review of the USDA Natural Resources Conservation Service: Web Soil Survey for the subject area, it is our understanding that the soil classification for the subject area is identified as being TvC-Tujunga gravely loamy sand, 0% to 9% slopes consisting of upper 36 inches of gravely loamy sands overlying gravely sands.
Based on the information published by the Department of Conservation, State of California, it is understood that the site is not situated within an A-P Special Study Zone where a known seismic fault passes through the site or its adjacent; however, given that the site being located within 0.16-mile to the nearest San Jacinto fault, appropriate structural design should be performed using the seismic design parameters described herein.
Following review of the online FEMA National Flood Hazard Layer FIRMette map, it is understood that the project site is classified as Zone X, 0.2% Annual Chance of Flood Hazard Area.
The near grade soils consisting of disturbed soils, cobbles, rocks with occasional concrete chunks, and debris existing as described are considered unsuitable for directly supporting structural loadings without excessive differential settlements to load bearing footings and concrete slabs-on-grade . It is our opinion, however, that for structural support when the upper minimum 5 feet of the disturbed soils are graded in the form of subexcavations and their replacement as engineered fills free of rocks, concrete chunks, and debris compacted to minimum 95%, the structural pads thus constructed should be considered adequate for the planned development with "tolerable" settlements . For paving/parking, site grading should include minimum 2 feet subexcavations and their replacement as engineered fills similarly compacted to 95%.
Laboratory shear tests conducted on the upper soils remolded to 90% indicate moderate shear strengths under increased moisture conditions . Results of the laboratory shear tests are provided on Plate B.
Consolidation tests conducted on remolded samples indicate "low" potential for compressibility under anticipated static structural loadings with potential for "tolerable" settlements to footings and concrete slabs on-grade. Results of the laboratory determined soils consolidation potential is shown in Appendix B.
Fine to coarse silty gravely sands with scattered rocks and cobbles encountered as described are considered "very low" in expansion potential requiring no special construction requirements other than those as recommended herein. Supplemental soil expansion testing, however, is recommended following mass grading completion to provide supplemental/revised foundation recommendat ions, if warran ted.
During site preparations and grading , buried irrigation , debris, organics, and others may be encountered.
In addition, variations in soil strata, their continuity and orientations may be expected . Due to the deposition characteristics of the soils encountered, care should be exercised in interpolating or extrapolating the subsurface soils conditions existing in between and beyond the test explorations conducted .
3.2 Excavatibility
It is our opinion that the grading required for the project may be accomplished by using conventional heavy duty construction equipment. No blasting or jackhammering should be warranted .
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3.3 Subsurface Variations
Based on the results of subsurface explorations and local experience from similar projects completed as of this date, it is our opinion that variations in subsoils continuity and depths of subsoils deposit may be expected. Due to the nature and depositional characteristics of the soils Linderlying as described, it Is our opinion that care should be exercised in interpolating and/or extrapolating of the subsurface conditions existing in between and beyond the test explorations described. Although not encountered, presence of underlying old, buried utilities may be expected during grading and construction.
3.4 Groundwater
No groundwater was encountered within the maximum depth of 31 feet explored. The following table describes the historical and the current groundwater level as recorded at the nearest well as listed by the local reporting agency.
GROUNDWATER TABLE
Reporting Agency California Department of Water Resources Marcelo Montagna 2008 Maps
httQ://wdl.water.ca.oov/waterdatalibraf"ll
Well Number 01 S/04W-22D002S
Well Monitoring Agency USGS/CA Department of Water Resources Well Location: Township/Range/Section T01 N-R04W-Section 22 Well Elevation: 978.63
Current Depth to Water (Measured in feet) 95.3
Current Date Water was Measured November 29,2010
Depth to Water (Measured in feet) (Shallowest) 9.13
Date Water was Measured April 8, 1992
Fluctuations in groundwater levels, however, can occur due to seasonal variations in the amount of rainfall, runoff, altered natural drainage paths, and other factors not evident at tl1e time the test borings were completed. Accordingly, for the planned development, it is our opinion that provisions should be maintained to dispose incidental surface runoff away from the individual structural pads once constructed.
3.5 Soil Corrosivlty Analyses
Since change in soil chemical contents are expected to vary considerably following site preparations and grading , no laboratory soils chemical evaluations are currently evaluated to determine soil corrosivity potential. Following mass grading completions , evaluations of such are recommended for the soils expected in contact with concrete and metals. Evaluations of such should include, at a minimum, the pH, sulfate, ch lo ride, and resistivity.
3.6 Faulting and Seismicity
Seismically induced site-specific potenlial hazards are discussed in the following sections.
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WattEV , Inc./ 1380 S. E Street, San Bernardino , CA 22051-F/BMP
3.6.1 Direct or Primary Seismic Hazards
Surface ground ruptures are associated with presence of nearby active fault and ground shaking representing primary or direct seismic hazards to structures . There are no known active or potentially active faults that pass through or towards the subject site, and the site is not situated within an A-P Special Studies Zone.
According to the current CBC, the site is considered within Seismic Zone 4. As a result, it is likely that during life expectancy of the structures built moderate to severe ground shaking may have potential for adverse effects on the site.
3.6.2 Induced or Secondary Seismic Hazards
In addition to ground shaking, effects of seismic activity may include potentials for soil liquefaction, differential settlements , ground lurching, landslides, lateral spreading, and earthquake induced flooding.
Potential effects of such are described below.
3.6.2.1 Surface Fault Rupture
The site is not situated within an A-P Special Studies Zone. Based on review of existing geologic information, no major fault is noted to cross through or extends towards the site. The potential for surface rupture resulting from nearby fault movement is not known for certainty but in our opinion is considered "low"
3.6.2.2 Flooding
Flooding hazards include tsunamis (seismic sea waves), Seiches , and failure of manmade reservoirs, tanks, and aqueducts . In absence of bodies of water nearby, such potential is considered "remote". Based on review of the FEMA National Flood Hazard Layer FIRMette map, it is our understanding that the subject area is delineated as Zone X, 0.2% Annual Chance of Flood Hazard Area as shown in the attached Appendix C
3.6.2.3 Landsliding
Seismically induced landslides and other slope failures are common occurrences during or soon after an earthquake . Considering that the site and its adjacent being relatively flat, it is our opinion that potential for seismically induced landslide should be considered as "remote" .
3.6.2.4 Lateral Spreading
Seismically induced lateral spreading involves lateral movement of existing soils due to ground shaking.
Lateral spreading is demonstrated by near vertical cracks with predominantly horizontal movement of the soil mass involved. The topography of the site being near level, it is our opinion that the potential for seismically induced lateral spreading should be considered as "remote" .
3.6.2.5 Settlement and Subsidence
The site is situated at approximately 0 16 miles from the San Jacinto Fault capable of generating an earthquake magnitude, M of 7.8 and PGA of 0.653g. Considering the proximity of the earthquake fault as described , it is our opinion that potential for some total and differential settlements due to ground shaking may be expected, with severity increasing considerably due to potential for soil liquefaction . B ased on site specific seismically induced settlement analysis using CivilTech Software, V5.2E LiquefyPro , it is our opinion that with a Factor of Safety, FS of 1, earthquake induced total and differential settlements for saturated and saturated soils (pre-construction) may be estimated to about 1.76-inch and 0.881-inch to
1.164-inch , respectively .
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WattEV, Inc./ 1380 S E Street., San Bernardino, CA 22051-F/BMP The results of the settlement analysis are provided in the following tables and supplemental details are provided in Appendix C.
TABLE 3.6.2.5 A 1: Preliminary Settlement Analysis (Pre-Construction)
I DYNAMIC SETTLEMENT MEASURED IN INCHES
I
Settlement of Saturated Sands 1.57
Settlement of Unsaturated Sands 0.19
Total Settlement of Saturated and Unsaturated Sands 1.76 DIFFERENTIAL SETTLEMENT 0.881 to 1.164
TABLE 3.6.2.5 A2: Preliminary Settlement Analysis (Post-Construction)
DYNAMIC SETTLEMENT MEASURED IN INCHES
Settlement of Saturated Sands 0.00
Settlement of Unsaturated Sands 0.03
Total Settlement of Saturated and Unsaturated Sands 0.03 DIFFERENTIAL SETTLEMENT 0.014 to 0.019
3.6.2.6 Liquefaction
Liquefact ion is caused by build-up of excess hydrostatic pressure in saturated cohesionless soils due to cyclic stress generated by ground shaking during an earthquake. The significant factors on which liquefaction potential of a soil deposit depends, among others include, soil type, relative soil density, intensity of earthquake, duration of ground shaking, and depth of groundwater.
No shallow depth bedrock or groundwater was encountered within the maximum depth of 31 feet explored Based on the available information published by California Department of Water Resources' online groundwater data library for well 01 S/04W-22D002S with historical groundwater recorded at approximately 9 feet, and based on review of Special Publication 11 7 A, published by the State of California Division of Mines and Geology, it is our opinion that the site is recognized to be highly susceptible to earthquake induced potential for soil liquefaction . The upper soils existing at their present state are considered susceptible to moderate deformation under conventional static structural loadings. Supplemental "excessive" ground settlements , as described herein, could be anticipated over a large area associated with potential for soil liquefaction during an earthquake .
3.6.3 Site Specific Seismic Effects
The site is situated at approximately 0.16 miles from the San Jacinto Fault capable of generating an earthquake magnitude, M of 7.8 and Peak Horizontal Ground Acceleration, PGA of 0.653g at 10% probability in a 50-year-return period. Considering the proximity of the earthquake fault as described, it is our opinion that potential for some total and differential settlements due to ground shaking may be anticipated as described in the previous section.
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WallEV , Inc./ 1380 S E Street., San Bernardino, CA 22051-F/BMP
3.6.4 Seismic Design Coordinates
The design spectrum was developed based on the 2019 CBC. Site Coordinates of 34.075110°N, -117.294687°W were used to establish the seismic parameters presented below.
3.7 Seismic Design Coefficients
Recommended values are based upon the USGS ASCE ?-Hazard Reports Parameters and the California Geologic Survey: PSHA Ground Motion lnterpolator Supplemental seismic parameters are provided in Appendix C of this report. The following presents the seismic design parameters as based on the available publications as currently published by the California Geological Survey and 2019 CBC. Supplemental seismic parameters are provided in Appendix C of this report.
TABLE 3.11 A 1: Seismic Design Parameters
Seismic Source Type
Based on California Geological Survey-Probabilistic Seismic Hazard Assessment Peak Horizontal Ground Acceleration (PGA) having a 10% probability of exceedance in a 50-year-period is described as below:
·-- ---
Seismic Source Type
Nearest Maximum Fault Magnitude M ~ 7.8
Peak Horizontal Ground Acce leration (PGA) 0.653g
I -- -·-
In design, vertical acceleration may be assumed to about 1/3 to 2/3 of the estimated horizontal ground accelerations described .
It should be noted that lateral force requirement in design by structural engineer should be intended to resist total structural collapse during an earthquake . During the lifetime use of the structure built, it is our opinion that some structural damage may be anticipated requiring some structural repairs. Adequate structural design and implementation of such in construction should be strictly observed . Use of flexible lifeline connections are suggested .
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WattEV, Inc./ 1380 S. E Street., San Bernardino, CA 22051-F/BMP TABLE 3.11 A2: Seismic Design Coefficients
CBC Chapter 16 2019 ASCE 7-16 Standard Recommended
Seismic Design Parameters Values
1613A.5.2 Site Class D
1613.5.1 The rnaooed spectral accelerations at short period Ss 1613.5.1 The mapped spectral accelerations at 1.0-second period S1 1613A5.3(1) Seismic Coefficient, Ss 2.445q
1613A5.3(2) Seismic Coefficient, S1 0.980g
1613A5.3(1) Site Class D / Seismic Coefficient, Fa 1g
1613A5.3(2) Site Class D / Seismic Coefficient, Fv n/a
16A-37 Equation Spectral Response Accelerations, SMs = Fa Ss 2.445q 16A-38 Equation Spectral Response Accelerations, SM1 = Fv S1 n/a 16A-39 Equation Design Spectral Response Accelerations, Sos= 2/3 x SMs 1.630g 16A-40 Equation Design Spectral Response Accelerations , SD1 = 2/3 x SMs n/a So ils Southwest, Inc. October 20, 2022 Page 11
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4.0 Evaluations and Recommendations
4.1 General Evaluations
Based on field explorations, laboratory testing , and subsequent engineering analyses, the following tentative conclusions and recommendations are presented for initial study:
(I) From a geotechnical viewpoint, the site is considered grossly stable for the proposed development, provided that the recommendations supplied herein are incorporated in design and construction.
Foundation design should reflect considerations of the seismically induced PGA as described. (II) Based on the dry silty sandy variable consistency nature of the upper soils existing as encountered, it is our opinion that for structural support the load bearing soils should be reworked in the form of subexcavations, followed by scarification, dampurization, and their replacement as engineered fills compacted to minimum 95%. In the event that new fill soils are required over the current grade surface such should be placed on the original grades when prepared as described. (Ill) The subexcavation depths during mass grading as described in the following section should be considered as "minimum". During grading, localized deeper subexcavations may be required within areas underlain by buried debris, utilities, localized fills or soft soils and others. It will be the responsibility of the grading contractor to inform the project soils engineer of the presence of such prior to further site preparations and grading.
(IV) In order to minimize potential for differential settlements, it is recommended that structural footings should be established exclusively into engineered fills of local soils compacted to the minimum as recommended in this report. Construction of footings and slabs straddling over cut/fill transitions shall be avoided.
(V) Structural design consideration should include probability for "moderate" peak ground acceleration from relatively active nearby earthquake faults. Implementing the seismic design parameters and procedures as outlined in the current CBC and as described earlier, however, may minimize the adverse effects for the structures proposed.
(VI) Although no shallow depth groundwater was encountered, provisions should be maintained during construction to divert incidental rainfall away from the structural pads constructed . (VII) It is our opinion that, if site preparations and grading are performed as recommended and as per the generally accepted construction practices and current CBC, the proposed development will not adversely affect the stability of the site or its adjacent.
4.1.1 Recommendations for Site Preparations and Grading for Structural Support In absence of detailed development plans review, the planned structural pad grades are assumed at/or near the existing grade surface. For adequate structural support, it is our opinion that moderate site preparations and grading should be included in the form of subexcavations of the near grade dry, silty, gravelly, variable consistency soils and their replacement as engineered fills compacted to minimum 95%.
In general, site preparations and grading should include subexcavations of the near surface soils to minimum 5 feet below the current grade surface or to the depth as required to expose the underlying damp and dense natural subgrades or to the depth as required to maintain a 24-inch-thick compac ted fill mat blanket below foundation bottoms, whichever is applicable, followed by the installation of a layer of biaxial geog rid such as Tensar BX1100 or approved equal overlain by a 2-foot-thick layer of clean 2 to 3-inch diameter crushed rocks or gravels.
The site preparations and grading described should encompass, at a minimum, the proposed structural footprint areas and minimum 5 feet beyond or as suggested by the geotechnical engineer during grading. No cut and fill transition conditions should be allowed .
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WattEV , Inc./ '1380 S. E Street., San Bernardino, CA 22051-F/BMP Within areas requiring fill soils, if any, such may be placed following sufficient subexcavations to expose the underlying dense subgrades as approved by the project soils engineer. During grading, the engineered fills placed should be compacted to near Optimum Moisture Content and with minimum 95% compaction of soils' Maximum Dry Density as determined by the ASTM 01557 test method.
The subexcavation depths described should be considered as "preliminary". Localized additional subexcavations may be required within areas underlain by undocumented old fills, buried utilities, and abandoned sewer and/or buried septic systems. It is recommended that the excavated subgrades should be verified and approved by the soils engineer prior to structural fill soil placement. Supplemental recommendations may be warranted following detailed development plans review.
Mass grading required for the project is recommended to encompass, at a minimum, the entire individual structural pads and minimum 5 feet beyond.
No cut and fill transition conditions underneath foundations should be allowed.
For reference, supplemental general mass grading recommendations are included in Section 5.
4.1.2 Structural Fill Material Requirements
(i) Non-expansive in nature, the on-site soils free of organics, debris, and rocks larger than 6-inch in diameter should be considered suitable for reuse as structural backfills.
Following mass grading completion, representative site soils sampled from graded fills expected in contact with footings and utilities should be laboratory tested to verify presence of sulfate, pH, chloride, and resistivity. Based on the chemical test results, supplemental design recommendations will be supplied prior to concrete pour. Such chemical testing will be scheduled upon request.
Import soils, if required, should be non-expansive, gravelly sand, and meeting the following criteria:
Liquid Limit <35
Plasticity Index <15
Expansion Index <20
4.1 .3 Cut and Fill Transition Pad Preparations (if applicable) Use of cut and fill transitions should be avoided to minimize potentials for differential settlements to footings and concrete slab-on-grade. Within cut/fill transition areas, if becomes essential, it is suggested that following necessary cut, the entire structural pad should be prepared so as to establish a uniform bearing compacted fill mat prepared in conformance to the general guidelines as described below.
Pad Preparation Guidelines for Cut and Fill Transition Areas Fill Depth Required for Finish Grade Overexcavation Depth below Finish Grade (Within low-lyinq areas) (Within cut areas)
Up to 5 feet Equal depth ___________ ··-···-···· __
5to10feet 5 feet
Greater than 10 feet One-half the maximum thickness of fills placed 011 the "fill" portion (20 feet maximum)
Cut portions should be overexcavated beyond the structural perimeter lines for a horizontal distance equal to the depth of overexcavation or to a minimum distance of 5 feet, whichever is greater . Actual subexcavation depths should be determined by the soils engineer during grading.
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4.2 Structural Foundation Design Parameters
For structural support, it is assumed that for load bearing support conventional continuous wall foundations and isolated round/square footings will be used established into the engineered graded fills placed during site preparations and grading as described. Static structural loadings of 40 kips and 4 kif are assumed for isolated columns and continuous wall footings, respectively .
In absence of detailed development plans review, it is assumed that a one or two-story concrete framed, concrete block, and/or conventional wood frame and stucco construction with concrete slabs-on-grade will be constructed . In general, it is suggested that use of load bearing continuous wall and/or isolated spread footings will be used underlain by at least 24-inch-thick engineered fill mat blanket of local soils compacted to minimum 95%.
Under static loading conditions, with a Factor of Safety, FS = 3.0, an allowable soil vertical bearing capacity of 2500 psf may be considered in design. The soil bearing capacity described may be increased by 200 psf for each additional footing depth or width to a total not exceeding 4000 psf. If normal code requirements are applied, the above capacities may further be increased by an additional 1/3 for short duration of loading which includes the effect of wind and seismic forces.
From a geotechnical viewpoint, minimum 15-inch-wide x 18-inch-deep foundation dimensions may be considered for the planned structure. Actual foundation dimensions , including foundation thickness against punching shear etc., should be determined by the project structural engineer based on the static loading and seismic PGA described earlier.
The footing depths described should be measured vertically from the lowest adjacent outside grade and not from the finished pad grade or from finished floor surface. Footing depths and dimensions shall be verified by the soils engineer prior to footing-forming , rebar, and concrete placement. It will be the contractor's responsibility to arrange such verification by the soils engineer .
From a geotechnical viewpoint under static loading conditions, use of minimum reinforcements consisting of 2-#4 rebar placed near the top and 2-#4 rebar near bottom footings, are recommended . Additional reinforcements, if specified by the project structural engineer, should be incorporated in construction Based on the laboratory determined soils consolidation characteristics, settlements to properly designed and constructed foundations supported exclusively into engineered fills of site soils or its equivalent or better, and carrying maximum assumed structural loadings are expected to be within "tolerable" limits.
Under static loading conditions, over a 40-foot-span, the estimated total and differential settlements should be about 1 and 1/2-inch, respectively, provided the foundations being supported by engineered fills of local soils compacted to minimum 95% as described . Most of the elastic deformations, however, are expected to occur during construction .
4.3 Concrete Slabs-on -Grade
No concrete slabs, sidewalks, and flatworks should be placed bearing directly on the surface soils currently existing . The prepared subgrades described to receive footings should be adequate for concrete slabs-on grade placement. For estimation purposes, use of 4.5-inch-thick (net) concrete slab-on-grade is suggested for the building pad and 5-inch-thick (net) for truck parking/charging stalls reinforced with #3 rebar at 18-inch o/c. Actual slab-on-grade thickness , however, should be designed by the project structural engineer based upon structural loading, the seismic design parameters, and PGA described.
Within moisture sensitive areas, concrete slabs should be underlain by 2-inch of compacted clean sand, followed by 10-mil-thick vapor barrier, such as commercially available StegoWrap, Visqueen or other approved covering, overlying an additional 2-inch-thick layer of sands. Sands used should have a Sand Equivalent , SE of 30 or greater.
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WattEV, Inc./ 1380 S. E Street, San Bernardino, CA 22051-F/BMP Building Pad/ Truck Parking/Truck Charging Stalls:
1. A 4.5-inch-thick (net) slab thickness for the building pad and 5-inch-thick (net) slab thickness for truck parking and truck charging stalls is suggested,
2. Use of 2500 psi concrete is suggested with maximum water/cement ratio of 0.64 or as suggested by the structural engineer,
3. Use of #3 rebar at 18-inch o/c using chairs or as required by the project structural engineer,
4. Within moisture sensitive areas, use of 10-mil-thick commercially available StegoWrap , Visqueen or other approved covering is recommended,
5. Use of a 2-inch layer of sand with SE greater than 30 over the installed Stego Wrap Visqueen or other approved covering is recommended,
6. Saw cut requirements shall be provided by the structural engineer .
Driveways:
1. A 5-inch-thick (net) slab is suggested bearing on local soils compacted to minimum 95%,
2. Use of #4 rebar at 18-inch o/c using chairs or as required by the project structural engineer ,
3. Use of 2500 psi concrete is suggested with maximum water/cement ratio of 0.64 or as suggested by the structural engineer .
Flatwork :
1. A 3.5-inch-thick (net) concrete slab is suggested on local soils compacted to minimum 90%,
2. Use of 2500 psi concrete is suggested with maximum water/cement ratio of 0.64 or as suggested by the structural engineer,
3. Tooled joints per the structural engineer .
It is recommended that, prior to concrete pours, utility trenches underlying concrete slabs and driveways should be thoroughly backfilled with sandy gravelly soils, mechanically compacted to the minimum compaction requirements as described . No water jetting should be used in lieu of mechanically compaction.
Subgrades to receive concrete foundations and slabs-on-grade should be "'dampened" as would be expected in any such concrete placement. Use of low-slump concrete is recommended. In addition, it is recommended that utility trenches underlying concrete slabs and driveways should be thoroughly backfilled with gravelly sandy soils mechanically compacted to minimum 90%. Concrete construction joint requirements should be determined by the project structural engineer.
To prevent concrete warping, no concrete should be placed during extreme weather conditions, such as during high outside temperatures and/or during high Santa Ana wind conditions.
4.3.1 Concrete Curing
In order to minimize potential for excessive concrete shrinkage or cracking , concrete slabs shall be adequately "cured" by using water or by using commercially available chemical curing agents .
4.4 Resistance to Lateral Loads
Resistance to foundation lateral displacement can be achieved by friction acting at the base of foundation and by passive earth pressures. A coefficient friction of 040 may be assumed with normal dead load forces for footing established on engineered compacted fills of local soils .
An allowable passive lateral earth resistance of 200 psf per foot of depth may be assumed for the sides of foundations poured against compacted fills. The maximum lateral passive earth pressure is recommended not to exceed 2000 lbs.
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WattEV , Inc./ 1380 S. E Street., San Bernardino, CA 22051-F/BMP For design, active lateral pressures from local soils when used as backfills may be estimated from the following equivalent fluid density:
CONDITIONS EQUIVALENT FLUID DENITY, pcf
Level Backfill 2:1 Backfill Slopinq Upwards
Active 30 40
Al Rest 55 70
Seismic 20H (H=wall heiqht) 20H (H=wall hei9.b_!)
4.5 Shrinkage and Subsidence
It is our opinion that during grading the upper soils may be subjected to a volume change. Assuming a 95% relative compaction for structural fills and assuming an overexcavation and recompaction depth as described earlier, such volume change due to shrinkage may be on the order of 8% to 10%. Further volume change may be expected due to supplemental shrinkage during preparation of subgrade soils. For estimation purpose, such may be approximated to about 2-inch when conventional construction equipment is used.
4.6 Soil Caving
Considering the dry silty sands, the site soils are susceptible to caving. Temporary excavations in excess of 4 feet should be made at a slope 2 to 1 (h:v) or flatter and as per the construction guidelines provided by Cal-Osha.
4. 7 Construction Considerations
4.7.1 Unsupported Excavations
Dry silty sandy site soils encountered are considered highly susceptible to caving. Temporary excavations up to 4 feet in depth may be made without rigorous lateral supports Excavated surface should be "'wetted" during construction in order to minimize potential surface soil raveling. No surcharge loading should be allowed within an imaginary 1: 1 line drawn upward from toe of temporary excavations.
4.7.2 Supported Excavations
If vertical excavations exceeding 4 feet in depth become warranted, such should be achieved using shoring to support sidewalls.
4.8 Structural Pavement Thickness
Alternative I - On Site Rigid Concrete Paving
Rigid paving, if selected , should be of at least 5-inch-thick (net) reinforced with #4 rebar at 18 inches o/c placed directly over the local engineered soils compacted to minimum 95%.
Actual paving thickness and reinforcement requirements, however, should be supplied by the project structural engineer using soils' Subgrade Reaction, kcr of 250.
Rigid concrete driveways should have thickened edges to prevent potential for lateral sliding under auto and truck traffic loading .
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WattEV, Inc./ 1380 S. E Street , San Bernardino, CA 22051-F/BMP Alternative II - Asphalt Paving
Flexible asphalt paving, if selected, based on the estimated Traffic Indices (Tis) as described below and an estimated soils' R-value of 55, the following flexible (a.c.) pavement sections are provided for estimation purposes:
Service Vehicle Traffic Pavement Paving
Index, Tis Type Thickness,
inches
5.5-6.5 3.5 over 4.0
Auto/ Heavy-duty Truck Traffic 6.5-7.5 a.c. over Class II base or CMB 4.0 over 4.5
7.5+ 5.0 over 5.0
Within paving areas, subgrade soils should be subexcavated to minimum 24 inches, moisture conditioned to near Optimum Moisture Content, followed by the excavated soils replacement as engineered fills compacted to at least 95% of the relative soils' Maximum Dry Density as determined by ASTM D1557 method . Class II base or CMB used to receive asphalt concrete should be placed directly over the prepared subgrades and compacted to minimum 95% . Use of deeper paving edges are recommended to minimize potential for edge movement and paving distress.
The pavement evaluations are based on estimated Traffic Indices (Tis) as shown and on the soils' R-value as described . It is recommended that following mass grading completion , representative site soils should be laboratory tested to determine soils' R-value and to provide updated paving thickness .
4.9 Retaining Wall (if planned)
Retaining walls, if planned, should be designed using the following equivalent active pressures in the form of fluid density:
Slope Surface of Equivalent Fluid Density (pcf)
Retained Material Imported Local
(horizontal to vertical) Clean Sand Site Soils
Level 30 30
2: 1 40 45
Retaining wall foundation design may be based on soils' vertical bearing capacity of 2000 psf for footing base materials compacted to minimum 90% .
The recommended lateral pressures do not include any surface surcharge load. Use of heavy equipment near retaining wall may develop lateral pressure in excess of the parameters described above. Installation of "French-drain" behind retaining walls is recommended to minimize water pressure build-up Use of impervious material is preferred within the upper 18 inches of the wall backfills placed.
Backfill behind retaining wall should be compacted to a minimum 90% relative laboratory Maximum Dry Density as determined by the ASTM D1557 test method . Flooding and/or jetting behind wall should not be permitted . Local sandy soils may be used as backfill. Supplemental detailed retaining wall design and construction requirements will be supplied upon request.
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4.10 Utility Trenches Backfills
Utility trenches backfills within structural pad areas and beyond should be placed in accordance with the following recommendations :
o Trenches backfills consisting of flexible pipes should be placed in 6 to 8-inch thin lifts mechanically compacted to 90% or better of the laboratory maximum dry density for the soils used. Jetting is not recommended within utility trench backfill . Within streets, upper 2 feet of the trench backfill should be compacted to 90% or better.
o Exterior trenches along a foundation or a toe of a slope and extending below a 1: 1 imaginary line projected from the outside bottom edge of the footing or toe of the slope should be compacted to 90% of the Maximum Dry Density for the soils used during backfill. Excavations should conform to the requirements of Cal-Os ha.
4.11 Seasonal Limitations
No fill shall be placed, spread or rolled during unfavorable weather conditions . Where the work is interrupted by heavy rains, fill operations shall not be resumed until moisture conditions are considered favorable by the soils engineer.
4.12 Planters
To minimize potential differential settlement to foundations, planters requiring heavy irrigation should be restricted from using adjacent to footings . In event such becomes unavoidable, planter boxes with sealed bottoms, should be considered .
4.13 Landscape Maintenance
Only the amount of irrigation necessary to sustain plant life should be provided. Pad drainage should be directed towards streets and to other approved areas away from foundations . Slope areas should be planted with draught resistant vegetation . Over watering landscape areas could adversely affect the proposed site development during its lifetime use.
4.14 Observations and Testing During Site Preparations and Grading Recommendations provided assume that structural footings and slabs-on-grade be established exclusively into compacted fills. Excavated footings should be inspected, verified , and certified by the soils engineer prior to steel and concrete placement to ensure their sufficient embedment and proper bearing as recommended . Structural backfills discussed should be placed under direct observations and testing by Soils Southwest, Inc. Excess soils generated from footing excavations should be removed from pad areas.
In general , geotechnical inspections should include, at a minimum , the following :
• Subexcavation depth during grading,
o Fill compaction testing,
" Retaining wall backfill compac tion,
• Excavated foundation depth,
" Paving subgrade verification , and
.. Utility trencl1es backfill compaction .
So ils Southwest, Inc. October 20, 2022 Page 18
WaltEV , Inc./ 1380 S. E Street, San Bernardino, CA 22051-F/BMP
4.15 Plan Review
No precise grading or detailed development plans are prepared and none such a1·e available for review.
Prior to the actual mass grading, grading and foundation plans should be available to ensure applicability of the assumptions made in preparing this report. If during construction , conditions are observed different from those as presented, revised and/or supplemental recomme ndations will be required .
4.16 Pre-Construction Meeting
It is recommended that no clearing of the site or any grading operations be performed without the presence of a representative of this office. An on-site pre-grading meeting should be arranged between the soils engineer and the grading contractor prior to the start of construction . Two days advance notice for such meeting is required.
Soils Southwest, Inc. October 20, 2022 Page 19
WattEV, Inc./ 1380 S. E Street., San Bernardino, CA 22051-F/BMP
5.0 Earth Work/General Grading Recommendations
The site soils primarily consist of upper loose to medium dense dry to damp silty fine to medium coarse sands varying in depth from approximately 3 to 5 feet below grade, overlying deposits of medium dense to dense gravely medium to coarse sands with pebbles, cobbles, and rocks to the maximum depth of 31 feet explored.
Prior to grading commencement , it is suggested that all debris and loose stockpiles should be cleared and disposed off-site to the satisfaction of the soils engineer. In general, site preparations and grading for the project should include, at a minimum, the following :
Structural Backfill
Local soils free of organic, debris, and rocks smaller than 6-inch in overall diameter should be considered suitable for reuse as structural backfill. Loose soils, formwork, and debris should be removed prior to backfilling retaining walls. Local soils backfill should be placed and compacted in accordance with the recommendations provided as below. Where space limitations do not allow conventional backfilling operations, special backfill materials, and procedures may be required Pea gravel or other select backfill can be used within limited space areas. Additional recommendations on such will be provided during construction .
Percentage Compaction During Mass Grading
With the presence of silty fine to medium coarse gravelly sandy soils with isolated cobbles and rocks existing as described and assuming moderately high dead load and seismic peak ground acceleration described, it is our opinion that structural fills placed should be compacted to the minimum 95% compaction requirements described During grading, use of vibratory sheepsfoot roller may be warranted.
Site Drainage
Adequate positive drainage should be maintained away from the structural pad in order to prevent water from ponding and to reduce potential percolation into backfill. A desirable slope for surface drainage is 2% in landscape areas and 1 % in paved areas. Planters and landscaped areas adjacent to building perimeter should be adequately designed to minimize water filtration into subsoils . Considerations should be given to the use of closed planter bottoms, concrete slabs, and perimeter subdrains where applicable .
Utility Trenches
Buried utility conduits should be bedded and backfilled around the conduit in accordance with the project specifications . Buried utilities in excess of 2 feet should be backfilled with local gravelly sandy soils and compacted to at least 95%. Remaining near surface backfills should be compacted to 90%.
General Grading Recommendations:
Recommended general specifications for surface preparation to receive fill and compaction for structural and utility trench backfill and others are presented below.
1. Areas to be graded, backfilled or paved, shall be grubbed, stripped and cleaned of all buried and undetected debris, structures , concrete, vegetation and other deleterious materials prior to grading .
2. Where compacted fill is to provide vertical support for foundations, all loose, soft, and other incompetent soils should be removed to full depth as approved by the soils engineer, or at least up to the depth as previously described in this report. The areas of such removal should extend at least 5 feet beyond the perimeter of exterior foundation limit or to the extent as approved by the soils engineer during grading Soi ls Southwest, Inc. October 20, 2022 Page 20
WattEV , Inc/ 1380 S. E Street., San Bernardino, CA 22051-F/BMP
3. The fills to support foundations and slab-on-grade should be compacted to minimum 90% of the soils' Maximum Dry Density at near Optimum Moisture Conditions. To minimize potential differential settlements to foundations and slabs straddling over cut and fill transition , cut portions following cut, should be further over-excavated and such be replaced as engineered fill compacted to minimum percentage compaction requirements described .
4. Utility trenches within building pad areas and beyond should be backfilled with granular material and such should be mechanically compacted as described earlier.
5. Compaction for structural fills shall be determined relative to the Maximum Dry Density as determined by ASTM D1557 compaction methods . In-situ field density should be determined by the ASTM D1556 (Sand Cone standard method) or by other approved procedures
6. Imported soils, if required, shall be clean, granular , and non-expansive in nature and as approved by the project soils engineer.
7. During grading, fill soils shall be placed in thin layers, thickness such should not exceed 6 to 8 inches.
8. No rocks over 6 to 8 inches in diameter shall be permitted to use as grading material without prior approval of the soils engineer.
9. No jetting and/or water tampering be considered for backfill compaction for utility trenches without prior approval of the soils engineer. For such backfill, hand tampering with fill layers of 8 to 12 inches in thickness is recommended .
10. The presence of any utility trenches at depth, cesspoo ls or abandoned septic tanks existing within building pad areas and beyond, should be excavated and removed or such should be backfilled with gravel, slurry or by other material as approved by the soils engineer. 11 . Imported fill soils, if required, should be equivalent to site soils or better. Such should be approved by the soils engineer prior to their use.
12. Grading required for pavement, sidewalks, or other facilities to be used by general public, should be constructed under direct observation of the soils engineer or· as required by the local public agencies.
13. A site meeting should be held between the grading contractor and the soils engineer prior to actual construction. Two days advance notice will be required for such meeting Soils Southwest, Inc. October 20, 2022 Page 21
WaltEV, Inc./ 1380 S. E Street., San Bernardino, CA 22051-F/BMP
6.0 WQMP-BMP Infiltration Rates Using Porchet
Method for Stormwater Disposal System Design
Presented herewith are the preliminary results of soils infiltration testing as performed for the on-site storm water disposal design as proposed.
Two (2) infiltration tests were performed at about twelve (12) feet below the current grades for underground stormwater chamber locations P-1 and P-2 as selected by the project design engineer . The evaluations are made using the standardized "falling-head" test method, converted to soil infiltration rates using the Porchet Method as per the guidelines as described in Table 1, Infiltration Basin Option 2 of Appendix A of the Riverside County-Low Impact Development (LID) BMP design Handbook, as well as the Appendices Section Vll.3.8.2, Appendix VII: Infiltration Rate Evaluation Protocol and Factor of Safety Recommendations of the San Bernardino County Technical Guidance Document for Water Quality Management Plan Handbook. Approximate test locations, P-1 and P-2 are shown on the attached Plate 1.
The soils encountered consist , in general, of upper fine to medium slightly silty sands overlying fine to medium coarse sands and gravels consisting of pebbles, cobbles, rock fragments, and rocks. For determining the presence of shallow depth groundwater or impermeable layer, supplemental foundation test explorations were advanced to the depth of thirty-one (31) feet below grade adjacent to the infiltration test borings. Based on such, no free groundwater or impermeable soils layers were encountered.
Based on the soil infiltration testing completed in the field, the observed soils' infiltration rates are
7.40-inch/hour and 6.81-inch/hour for the described BMP test locations, P-1 and P-2, respectively. For design, use of an appropriate safety factor should be considered to the observed rates as selected by the project design engineer.
6.1 EXCAVATED TEST BORINGS
The BMP test borings (P-1 and P-2) were made using an 8-inch diameter hollow-stem auger drilling rig, advanced to approximately 12 feet below the current grade. Water used during infiltration testing was supplied by using a portable water tank.
6.2 METHODOLOGY AND TEST PROCEDURES
EQUIPMENT SET-UP (POST EXCAVATION) PROCEDURES :
Following test boring completion each of the test holes were fitted with perforated PVC pipes, backfilled with 2-inch-thick crushed rock at the bottom to minimize potentials for scouring and caving. To determine test intervals , as per the Section 2.3 for deep percolation testing of the referenced handbook guideline, two consecutive readings were initially made to determine if 6 inches or more of water seeped in 25 minutes.
Since 6 inches or more of water seeped away in less than 25 minutes for tests P-1 and P-2, subsequent percolation testing was performed at 10-minute time intervals for minimum 1 hours or until the soil percolation rates were consistent.
The 10-minute recorded percolation tests' rate were converted into an Infiltration Rate (It) in inches/ham using the "Porchet Method" equation as described in the Reference 2, Riverside County Low Impact Development BMP Design Handbook.
6.3 INFILTRATION TEST RESULTS
Based on the soil infiltration testing completed at the test locations and at the test depth as described, the observed soils' percolation rates are 7.40-inch/hou rand 6.81-inch/hour for test locations P-1 and P-2, respectively .
Soi ls Southwest, Inc. October 20, 2022 Page 22
WattEV , Inc./ 1380 S E Street., San Bernardino , CA 22051-FiBMP Calculations to convert the percolation test rate to infiltration test rates in accordance with Section 2.3 of the County Handbook are presented in Table I and II below . For design, it is suggested that an appropriate Factor of Safety as selected by the design engineer should be considered to the observed field percolation rate described .
6.3.1 CONVERSION CALCULATIONS & SUMMARY
TABLE I
Summary of Observed Infiltration Rates
Test Date Test Depth Change in Water Observed Rate
(9-21-22) Below Grade Level Using Porchet Method
& (ft) (in) (in/hr)
Test No.
-·------ - - - . ·-•---- - ·- --·---- ·- ·
P-1 10.0 12.25 7.40
P-2 10.0 11.5 6.81
TABLE II
Conversion Table (Porche! Method)
- ---- --- ------·--· - - ·
Test Initial
Test Hole Time Initial Final Water Final Water Change in Average Head No. Depth, Interval, Depth, Depth, Height , Height, Water Height Height (in) (in) (in) (in)
- - --- ------- -·· DT(in) .L'it(min) Do (in) Dr(in) Ho=Dr - Do Hr= Dr- Dr .L'iH=H o -H1 Havg=(Ho+ Hr)/2 P-1 144 10 120 132.25 24 11 .75 12.25 17.875
P-2 144 10 120 131.5 24 12.5 11 . 5 18.25
Infiltration Rate (l1)=.t.H60r/LH(r+2Havq)
Test A B C -- ---- -·------·----
No_ .L'iH60r .L'it(r+2Havq) A/B=in/hr
P-1 2940 397.5 7.40
P-2 2760 405 6.81
The infiltration rates described are based on the in-situ testing completed at the locations and to the depths as suggested by the project civil engineer . In event the final chamber locations or chamber depths vary considerably from those as described herein , supplemental soils infiltration testing may be warranted .
It should be noted that over prolong use and lack of maintenance the detention/infiltration basins or deep chambers constructed based on the suggested design rates may experience much lower infiltration rates due to the accumulation of silts, fines, oils, and others . Regular maintenance of the chambers in form of removal of debris, oil and fines are strongly recommended. A maintenance record of such is suggested .
We offer no other warranty , express or implied.
Soils Southwe st, Inc. October 20, 2022 Page 23
WattEV, Inc./ 1380 S. E Street , San Bernardino, CA 22051 -F/BMP Suggested Requirements for Standard Stormwater BMP installation:
The invert of storrnwater infiltration should be set at least 10 feet above the groundwater elevation and should not be placed on steep slopes to create conditions for slopes instability .
When adequately installed , it is our opinion that the Stormwater infiltration systems installed should not increase the potentials for static or seismic settlement of structures.
Storrnwater infiltration installed should not place an increased surcharge on structures or foundations on or its adjacent. The pore water pressure should not increase the soils retained by retaining structures .
The invert of stormwater infiltration should be set back at least 15 feet and outside a 1: 1 plan drawn up from the bottom of adjacent foundations .
Storrnwater infiltration should not be located near utility lines where the introduction of stormwater could cause damage to utilities or settlement of trench backfill.
Stormwater infiltration systems should not be allowed within 100 feet of any potable groundwater production well.
Once installed, regular maintenance of the detention system is recommended.
Soils Southwest, Inc. October 20, 2022 Page 24
WaltEV, Inc.I 1380 S. E Street., San Bernardino, CA 22051-F/BMP
7.0 Closure
The opinions and conclusions presented are based upon the findings and observations as made during subsurface test excavations and subsequent laboratory testing and engineering evaluations as currently used in the Geotechnical industry. The recommendations supplied should be considered "preliminary" since they are based on soil samples only. If during construction, the subsoil conditions appear different from those as disclosed during field investigation this office should be notified to consider any possible need for modification by the geotechnical recommendations as provided in this report Recommendations provided are based on the assumpt ions that structural footings strictly be established exclusively into compacted fill. No footings and/or slabs should be allowed straddling over cut/fill transition interfa ce.
Site grading observations and testing must be performed by a representative of this office. Further, it is recomme nded that excavated footings should be verified and approved by soils engineer prior to steel and concrete placement to ensure that foundations are founded into satisfactory soils and excavations are free of loose and disturbed materials.
A pre-grading meeting in between grading contrac tor and soils engineer is recommended prior to construction preferably at the site, to discuss the grading procedures to be implemented and other requirements described in this report to be fulfilled .
This report has been prepared exclusively for the use of the addressee for the project referenced in the context It shall not be transferred or be used by other parties without a written consent by Soils Southwest, Inc.
Shou ld the project be delayed beyond one year after the date of this report, the recommendations presented shall be reviewed to conside r any possible change in site conditions.
The recommendat ions presented are on the assumption that the necessary geotechnical observations and testing during construction will be performed by a representative of this office. The field observations are considered a continuation of the geotechnical investigation performed .
If another firm is retained for geotechnical observations and testing, our professional liability and responsibility shall be limited to the extent that Soils Southwest, Inc. would not be the geotechnical engineer of record . Use of the geotechnical recommendations by others will relieve Soils Southwest , Inc. of any liability that may arise during the lifetime use of the structure const ructed.
Soils Southwest, Inc. October 20, 2022 Page 25
Wall EV, Inc./ '1380 S. E Street., San Bernardino, CA
Legend : • B-1
LI P-1
Soils Southwest, Inc.
PLOT PLAN AND TEST LOCATIONS
Planned EV Truck Leasing Service Facility
1380 S. E Street
San Bernardino, California
APN: 0141-252-08
NTS
Approximate Location of Test Borings for Geotechnical Study Approximate Location ofTest Boring for BMP Soils' Infiltration October 20, 2022
22051-F/BMP
Plate 1
WattEV , Inc/ 1380 S. E Street., San Bernardino, CA
List of Appendices
Appendix A - Log of Borings
Appendix B - Laboratory Test Results
Table I: Moisture-Density Determinations (ASTM 02216)
Table II: Maximum Density/Optimum Moisture Content (ASTM 01557) Table Ill: Direct Shear (ASTM 03080)
Table IV: Consolidation (02435)
Table V: Sand Equivalent, SE (ASTM 02419)
Table VI: Sieve Analysis (ASTM 0422)
Table VII: Soil Density Correlation to SPT Blow Counts
22051-F/BMP
APPENDIX C - Supplemental Seismic Design Parameters , Liquefaction Analyses, and FEMA National Flood Hazard FIRMette Layer Map
APPENDIX D - Soil Infiltration Test Data
Porchet Method Calculation Summary
Soils Southwest, Inc. October 20, 2022 Page 27
WattEV, Inc./ 1380 S. E Street, San Bernardino , CA
APPENDIX A
Field Explorations
22051-F/BMP
Geotechnical evaluations included 6 exploratory test borings (B-1 to B-6) using a hollow-stem auger drilling rig advanced to maximum depth of 31 feet below grade , along with 2 test borings (P-1 and P-2) to a maximum depth of 12 feet below the existing the grade surface. Approximate test exploration locations are shown on the attached Plate 1.
Soils encountered during explorations were logged and such were classified by visual observations in accordance with the generally accepted classification system. The field descriptions were modified, where appropriate , to reflect laboratory test results. The bulk and undisturbed soil samples procured were sent to our laboratory for geotechnical analyses as described in the attached Log of Borings.
The Log of Borings is presented in the following summary sheets that include the description of the soils and/or fill materials encountered .
Soils Southwest, Inc. October 20, 2022 Page 28
WaltEV, Inc./ ·1380 S. E Street., San Bernardino, CA 22051-FIBMP
LOG OF BORINGS
Soils Southwest , Inc. October 20, 2022 Page 29
Soil s Southw est, Inc.
897 Via Lata, Suite N
Colton, CA 92324
(909) 370-0474 Fax (909) 370-3156
LOG OF BORING s .. 1
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Site Location Plate#
Proposed EV Truck Leas i ng Facility
1380 s . E Street
~ Standard penetration lest ~ Bulk/Grab sample I Calirornie sampler 1 Soils Southwest, Inc.
• 897 Via Lata, Suite N
1 Colton, CA 9 2324
(909) 370-0474 Fax (909) 370-3156
LOG OF BORING 9 .. 2
EV/Truck Leasing Fac i lity Job No. : 22051 - F/BMP
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13 80 S . E Street
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897 Via Lata, Suite N
Colton, CA 92324 LOG OF BORING B-3
(909) 370-0474 Fax(909) 370-3156
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coarse, dry
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- End of test boring@ 16 . 0 ft.
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Groundwater: n/a Site Location Plate#
Approx. Depth of Bedrock: n/a
Datum: n/a
Elevation: n/a
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1380 S. E Street
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897 Via Lata, Suite N
Colton, CA 92324
(909) 370-0474 Fax (909) 370-3156
att EV/Truck Leasin
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Job No.: 22051 - F/BMP
6 11 HSA Date: October 15, 2022
Description and Remarks
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- End o f test boring@ 21.0 ft .
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Site Location Plate#
Proposed EV Truck Leasing Facility
1380 S. E Street
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897 Via Lata, Suite N
Colton, CA 92324
(909) 370-0474 Fax (909) 370-3156
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LOG OF BORING BMP P-1
Job No.: 22051-F/BMP
6 11 HSA Date: October 15, 2022
Description and Remarks
\tilled weeds
SAND - dark gray to brown, silty, fine to
medium coarse, p e bbles
- color change to light brown, slightly
gravely, fine to medium coarse
- color change to brown, slightly silty,
gravely, fine to medium coarse, pebbles,
rock fragments, rocks, and scattered
cobbles
- silty, gravely, fine to coarse
- End of i nfiltrat ion test boring @ 12 f t.
- no bedrock
- no groundwater
- 3" socked perforated PVC pipe installed
with gravel at bottom
Site Location Plate#
Datum: n/a Proposed EV Truck Leasing Facility
Elevation: n/a 1380 s . E Street
c,~~ t:1~-"~- -·H -- ,..._lif,....,..ni~
~ Standard penelralion test ~ Bulk/Grab sample I California sampler Soils Southwest , Inc.
897 Via Lata, Suite N
Colton, CA 92324
(909) 370-0474 Fax (909) 370-3156
LOG OF BORING BMP p ... 2
EV/Truck Facil ity Job No.: 22051 - F/BMP
Marco C.
C: ?J c C
QJ
.~
C 0
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u C ... u
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au <1l 0.
C ~ 0 !~ ~ 5 s!* B .,- l:' D. C - >, Ul o. !!!.,u s.= 0 .!: 0. u :J UUl SM
GM SM
Groundwater: n/a
Approx. Depth of Bedrock: n/a
Datum: n/a
Elevation: n /a
I:
: I:
:I:
'i
: I ◄
'.1 .
r:
Diam.: 6 11 HSA Date: October 15,2022
.!: Description and Remarks u
:a :§.4> a.
~ QJ Q)
[!) 0 u.
1: -\ tilled weeds
-- SAND - to brown, silty, fine to gray
Ile-- medium coarse, pebbles
-I: I:
1:1:-
_.2_
I: ,_
II ~ - color change to light brown, slightly
,!!i ii silty, gravely, fine to medium coarse,
-
pebbles, rock frag1Ue nts
10 (hi.
I••
. ;
- End of infiltration test boring @ 12 ft .
- - no bedrock
'--- - no groundwater
J-5_ - 3" socked perforated PVC pipe installed
with gravel at bottom ,_
~
'---
~
JQ_
,.__
--
~
~
_2_5___
,.__
'---
'---
'---
JQ_
--
~
'---
~
Site Location Plate#
Proposed EV Truck Leasing Facility
1380 S. E Street
rl Standard penelrailon lest ~ Bulk/Grab sample I California salllp ler :;:i 1:
C: LI. ! l!!
"CJ~ &
C:
0 ig~! u ..
C ~ 0 E ;~ b'l ~ ~ ~ ~ .E
-
Soils Southwest, Inc.
897 Via Lata, Suite N
Colton, CA 92324
(909) 370-0474 Fax (909) 370-3156
EV/Truck Leasin Facilit
Marco c. Boring Diam.:
C:
;::, C:
~ 0
'iii :p "' u C: ... u -o !E E u .!: Cl> LL g 2i :c au ~ E ~ -UJ ~ a. fa ... ~a. •-~Ill I!! g- :ll Cl) 0 C: - >, a.!: a. u ::l u en l') C LI.
GP- SP . : ,: ... '\t i lled
•• : : ;-4 ,- SAND -·"I:· .. ' . · i• ::
1~:~ :-.;.
- End
-_5_ - no
- no
1--
--
,_
--
~
,_
,-
,_
-
~
-
-
-
-
~
-
-
--
-
~
-
,_
-
-
~
1--
-,___
1--
LOG OF BORING PAVING
8-5
Job No.: 22051-F/BMP
6 11 HSA Date: October 15, 2022
Description and Remarks
weeds
light gray brown, traces of silt,
gravely, fine to coarse, pebbles,
rock fragments, rocks
of test bor i ng @ 3.0 ft.
bedrock
groundwater
Groundwater: n/a Site Location Plate#
Approx. Depth of Bedrock: n/a
Datum: n/a
Elevation: n/a
~ Bulk/Grab sample
Proposed EV Truck Leasing Facility
1380 s. E Street
Soils Southwest, Inc.
897 Via Lata, Suite N
Colton, CA 92324
(909) 370-0474 Fax (909) 370-3156
LOG OF BORING PAVING
8-6
EV/Truck Leasi ng Facilit Job No.: 22051-F/BMP
6 11 HSA Date: October 15, 2022
:; 'i: C
C ': ! .! ~
C 0
C 0 ·.:;
1J'g~f-
8 'iii ., ro
~ ~ ~ ~
C ... 0 0
.!:! .5 Description and Remarks QI u. C ro .., !E E
.~ :,I! au <IJ 0. .!!! ~ fl ..c: .c
C QI O l ~ ls
0. ...... Sc_
"' 0 ~a. ],!!! ~ l'! 0. QI
tl)ct{g.~ s: .5
QI <IJ
a .5 o..u :JOU) C) 0 lL
SM r\ tilled weeds
I:
I-
SAND light silty , fine to med ium , - gray,
~
occasional pebbles , scattered r ock
~
fragments
- End of test boring @ 3.0 ft. -
_ 5_ - no bedrock
- no groundwater
--
--
--
--
JJL
--
,_
--
~
J1L
- -
'--
~
<--------
_--2..Q_
- -
--
,___
,___
--2..5-
- -
- -
1--
~
~
-
'---
,_
<--------
Groundwater : n/a Site Location Plate#
Approx. Depth of Bedrock: n/a
Datum: n/a Proposed EV Truck Leasing Facility
Elevation : n / a 1380 s. E Street
Q~~ ,.., __ ~"'1rrlinn ,..,~ 1 i -Forni"
~ Bulk/Grab sample
Symbol Description
Strata symbols
Silty sand
Poorly graded sand
Poorly graded gravel
and sand
Poorly graded silty
fine sand
Poorly graded sand
with silt
KEY TO SYMBOLS
Silty sand and gravel
Soil Samplers
~ Standard penetration test
~ Bulk/Grab sample
I California sampler
Notes:
1. Exploratory borings were drilled on October 15,2022 using a 4-inch diameter continuous flight power auger.
2. No free water was encountered at the time of drilling or when re-checked the following day .
3. Boring locations were taped from existing features and elevations extrapolated from the final design schematic plan. 4 . These logs are subject to the limitations, conclusions, and recommendations in this report .
5 . Results of tests conducted on samples recovered are reported on the lo s.
C: i _§
...
C:
0 .. ~ "E-., [ ... 0
~i~J
u
.e ~ C: C: 0
-1'3 ., - 111 •
Cl) fl.(!!. 3: .5
31 ~
Soils Southwest, Inc.
897 Via Lata, Suite N
Colton, CA 92324
(909) 370-0474 Fax (909) 370-3156
EV/Truck Leasin
Marco C. Bor
C:
~
1/1
C:
2J lJ
~Cl.
o.!:
C: 0
0 ~ :::, .., u u u C: 111 -g !E e :c ., Q.
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SM 1:
-= .c
g. iU
0~
--
Ii : : --
I: : --
-\tilled
SAND -
- (Max
LOG OF BORING B-1 b
Job No.: 22051 -F/BMP
6 11 HSA Date: October 15, 2022
Description and Remarl<s
weeds
light gray - brown, silty, slightly
gravely, fine to medium coarse,
scattered pebbles, dry
Dry Density = 125 pcf@ 10 %)
16 • 14 113 90 . 4
5 ' ..... ---'"'--- -1------ ----------------- ----- - 1 ·.::: : : - color change to brown, silty, fine to,
10 •
2e I 3. e 96.l 76.8
42 44 ,
Groundwater: n/a
Approx. Depth of Bedrock:
Datum: n/a
Elevation: n/a
I!"'.] Standard penetration lest
SM
.... .. ..
I I •1 <I
.... .
. . . . ... ' ... '' .. .. '. ..... --
, . '.
····· --
:·.:· .. ·· -. ... '
t---- ----H
'\111': 15
SP
GP- SP
n/a
...... . .. . . . ·.·.:::.·..-
I O O O I
··.:· . . ••I---
...... .. .. ..
.•.• :1-
·.::"; ~ ·._\_lQ... .... .. . . ·······1--
•. : : : : ··· ···-
....• • 1-
.... • ••I
medium to coarse with pebbles, rocks,
cobbles
- color change to dark gray, silty, fine,
moist
- color change to yellow, traces of silts,
fine to meium coarse
- color change to dark greenish gray to
dark gray, silty, fine to medium, damp
- color change to light tannish brown,
gravely, coarse, rock fragments and
scattered rock 1 1/2", dry
- color change to dark gray brown, gravely,
medium coarse to coarse, pebbles, rock
fragments
Site Location Plate#
Proposed EV Truck Leasing Facility
13B0 s. E Street
San Bern~.-.-lino C'aJif'ornia
~ Bulk/Grab sample I California sampler
::, c
Ci: ~ s C
~ j [ 1
0 u ... 'O QJ ~
~ ~ CC: 0
Bl it e. ~ ;:: .!:
48 ,
-
35 '
1--
Soils Southwest, Inc.
897 Via Lata, Suite N
Colton, CA 92324
(909) 370-0474 Fax (909) 370-3156
LOG OF BORING 8 --1 b
EV/Truck Leasing Facilit Job No.: 22051-F/BMP
6" HSA Date: October 15 ,2022
C
i;, C 0
0 .. 'iii '.C "' Description and Remarl<s C ..., u u u .!: ., u. C:"' -g !E E :c ou ., a. .c:
~ a ~ m~ a.
g-i i:, a. I!! o .!:
C - >, (!) a. u :> u (/) Cl u.
.... ..
-~=: -
i•~--'' •• .'<ii
.. 411i•: :
• .. ,,. ... ~
·•··: .. : . ~:: .• ., ..•.. --
~ .. ::
_AQ_ : •.. ::. .... .. •.. ~, .. : •.. , .... .,. . • ... ~: :~ .,:.411: :. '. .. .•. '
• "• 'J.' ::~, -•• 'I
_li_ : : ' ;'1, ...... .... '
·.~:, 'al
_:,~,. _: .... .. -.. ' . •· :· : : ·: :'JI
~~·· ·., .. . ..
.. ~-~-. -
SM :1:1:1: 1:1: 50
~- color change to light brown, silty, fine,
I O t o t I
moist SP
o 00 0 0 I
- - color change to light gray, fine to medium -- pebbles, scattered rock fragm e nts, dense, - dr
1-- - End of test bor i ng @ 51 . 0 ft .
-2-2.-- - no bedrock
- no groundwater
1--
.,___
1--
-
~
--
--
1--
1--
J.5-_
-
,-..
--
-
_JJL
-
--
WaltEV , Inc./ 1380 S. E Street , San Bernarclino, CA 22051-F/BMP
APPENDIX B
Laboratory Test Programs
Laboratory tests were conducted on representative soils for the purpose of classification and for the determination of the physical properties and engineering characteristics . The number and selection of the types of testing for a given study are based on the geotechnical conditions of the site. A summary of the various laboratory tests performed for the project is presented below.
Moisture Content and Dry Density (ASTM D2216-80):
Data obtained from these tests performed on undisturbed samples are used to aid in geotechnical soil classification and correlation of the soils and to provide qualitative information regarding in-situ soil strengths.
Direct Shear (ASTM D3080):
Data obtained from this test performed at increased and field moisture conditions on relatively undisturbed and remolded soil sample is used to evaluate soil shear strengths. Samples contained in brass sampler rings placed directly on test apparatus are sheared at a constant strain rate of 0.002 inch per minute under saturated conditions and under varying loads appropriate to represent anticipated structural loadings.
Shearing deformations are recorded to failure. Peak and/or residual shear strengths are obtained from the measured shearing load versus deflection curve. Test results, plotted in graphical form, are presented on Plate B-1 of this section .
Soil Consolidation (ASTM D2835):
Drive-tube samples are tested at their field moisture contents and at increased moisture conditions since the soils may become saturated during lifetime use of the planned structure.
Data obtained from this test performed on relatively undisturbed and/or remolded samples, were used to evaluate the consolidation characteristics of foundation soils under anticipated foundation loadings.
Preparation for this test involved trimming the sample, placing it in 1-inch-high brass ring, and loading it into the test apparatus which contained porous stones to accommodate drainage during testing. Normal axial loads are applied at a load increment ratio, successive loads being generally twice the preceding .
Soil samples are usually under light normal load conditions to accommodate seating of the apparatus .
Samples were tested at the field moisture conditions at a predetermined normal load. Potentially moisture sensitive soil typically demonstrated significant volume change with the introduction of free water. The results of the consolidation tests are presented in graphical forms on Plate B-2 of this section.
Sieve Analysis (ASTM D422) :
Soils gradation analyses are performed on procured bulk samples at various testing for depths to determine the classification of existing soil conditions.
Soils Southwest, Inc. October 20, 2022 Page 30
Walt EV, Inc./ 1380 S. E Street , San Bernardino, CA 22051-F/BMP Laboratory Test Results
Table I: Maximum Dry Density - Optimum Moisture Content (ASTM 01557) Boring No. @ Sample Depth, ft Max. Dry Density, pcf Optimum Moisture Content, ¾
B-1 @ 3-5
SM SAND- light brown, silty, fine to 125 10.0
medium coarse with pebbles, rock
fragments, and scattered rocks up to
2-in in diameter
Table II In-Situ Moisture -Density Determinations (ASTM 02216) Test Boring No. Sample Depth, ft Dry Density, pct Moisture Content , % B-1 5 113.0 13.68
B-1 15 96.05 3.84
B-2 3 117.19 2.46
B-2 8 92.84 13.68
B-3 8 81.78 17.39
B-4 8 102.05 12. 5
Table Ill Direct Shear (ASTM 03080)
Test Trench or
Boring Test Cohesion, Friction,
@ Condition pdf degrees
Sample Depth, ft
B-1 @ 3-5 Remolded to 90% 425.31 42.83
B-1 @5 Undisturbed 225.45 49.78
B-2@8 Remolded to 90% 300.22 45.36
Soil s Southwest, Inc. October 20, 2022 Page 31
WattEV, Inc./ 1380 S. E Street., San Bernardino, CA
Table IV: Consolidation (D2435)
Sample# Depth, ft Consolidation Hydro Total
prior to Collapse, Consolidation ,
saturation, %@2 kips % @8 kips
%@2 kips {saturated)
B-1 3-5 0.6 0. 1 1.6
(remolded)
B-1 5 0.5 0.1 17
(undisturbed)
B-4 8 0.5 0.1 3.2
(undisturbed)
--· ··
Table V: Sand Equivalent, SE (ASTM D2419)
Sample Location (@ depth , feet Sand Equivalent, SE
B-5@ 1-3 2941
B-6@ 1-3 7.78
Table VI: Sieve Analysis (ASTM D422)
SAMPLE: B-5@ 1-3 feet
Grain Size % Retained
Gravels 11
Medium to Coarse 43
Fines 38
Silts 8
Table VII: Soil Density Correlation to SPT Blow Counts
1" Soil Tube -- Blows Per Foot
22051-F/BMP
Density/Consistency
Standard Penetration
Sand Blows Per Foot
Granular Cohesive and Silt Clay
Gravel
Very Loose Very Soft 0-50 0-50 0-60 0-5
Loose Soft 50-100 50-180 60-250 5-10
Slightly Stiff 100-350 180-1000 250-1000 10-20 Compact
Compact Very Stiff 350-525 1000-2000 1000-4000 20-35
Dense Hard 525-1500 2000-5000 4000-5000 35-70
Very Dense Very Hard 1500+ 5000+ 5000+ 70+
Soils Southwest, Inc. October 20, 2022 Page 32
MODIFIED PROCTOR COMPACTION TEST (ASTM STD. 1557)
MOISTURE% ( ) 3.84 10.00 13.68 13.68
DRY DENSITY (pcf) 118. 7 4 125 118.22 118.22
MOISTURE -DENSITY CURVE
140 •
13Q
f 120
:::i
0 ..,
(/)
al 110 ..J ......
~
(/) 100 z w
Q
~ 90 C
80 70 •
0.00 10.00 20.00 30.00 40.00 50.00 60.00
MOISTURE CONTENT (%)
CURVE SOIL DESCRIPTION OPT MOIST. MAX DRY
NO. CONTENT(%) DENSITY (P.C.F.)
B-1 Watt Ev, Inc. Truck Leasing Facility 10 125
3-5' 1380 S. "E" Street c/s Century Ave.
San Bernardino, California
SOIL DESCRIPTION: SM- SAND - light brown, silty, fine to medium , PROJECT NO. 22051-F pebbles, rock fragments , scattered rocks up to 2" PLATE: A-1 SOILS SOUTHWEST INC.
Consulting Foundation Engineers
DIREet Sl:IE~R lFESJfS
'
:z:
~ 0+-----------------'--1- ------t
0 SYMBOL LOCATIO DEPTH
FT
■ B-1 3 to 5
Proposed EV Truck Leasing Facility
1380 South E Street
San Bernardino, California
TEST
CONDITION
Remolded to 90%
SOILS SOUTHWEST, INC.
Consultin Foundation En ineers
425.31
PROJECT
NO.
PLATE
42.83 22051-F
B-1
E>IREC-li SHEAR ifESlf~
0 '1--- --11-,,,----- --'-l fr-----f,-- - ~-----I
0 0.5
NGRM~Lll!O"D(!(IPS PER SQUARE f001T>}
SYMBOL LOCATIO DEPTH
FT
■ 8-1 5.0
Proposed EV Truck Leasing Facility
1380 South E Street
San Bernardino, California
TEST
CONDITION
Undisturbed
SOILS SOUTHWEST, INC.
Consultin Foundation En ineers
:2.6
225.45
PROJECT
NO.
PLATE
49.78 22051-F
B-1-1
DIRJ:eT SHEAR il'ES1TS
NGRM1\l!l 1!10J\D(KIP~ PER SQU~~E F,GJ0Ti)
SYMBOL LOCATIO DEPTH
FT
■ 8-2 8.0
Proposed EV Truck Leasing Facility
1380 South E Street
San Bernardino, California
TEST
CONDITION
Undisturbed
SOILS SOUTHWEST, INC.
Consultin Foundation En ineers
2,6
300.22
PROJECT
NO.
PLATE
45.36 22051-F
8-1-2
i2.lil:Jil!
~i@:(i)(
.00
ts:.jar
CONSOLIDATION TESTS
0 ~1DS ~ ~II?.$ BEB S!ill!J~RE Fl©©lli
rt - --- -....
-
--
- 8 -1 @ 3-5 ft.
- Remolded to 90%
_ Initial Moisture Content =lO.O%
Final Moisture Content = 12.5% -
~
-
-·-
;- -
ns-!GC!i
~Mill -- "" -~- -
~
""
• WATER PERMITTED TO CONTACT SAMPLE
(:)
"'
,-_
t---
- -
t-1-1-
~-IJ
---
•- - -
, _ _
----
•'--'-"•-
~ PROJECT Proposed EV Truck Leasing Facility
- 1------- -1-1.:....38:.....:0_S::....:.·--=E:.....:S::....:.tr-'-e..:..et"--, ..:..Sa.:....n.:....B::.,;e.:....rn_a_rd.:....in.:....0--,.-- --------1 PROJECT NO. 22051-F P LATE B-2
SOILS SOUTHWEST INC.
Consulting Foundation Engineers
z 0
~ Q
:ll 0 Ill
z 0
(::)
ffi
ffi
Ill
CONSOLIDATION TESTS
l!.OAIDS IN KIPS PSR SQUARE FOOT
0,1
0.00 1.00 =
2:00
3.00 - --
4.00 I--
8-1 @5 ft.
5.00 - Undisturbed
6.00 _ Initial Moisture Content =13.7%
ii'.00 Final Moisture Content= 16.1% --
800 1-1-
9,00
ifOJQO -
n1 .oo
u oo
13.00 ~4,00 __ ,_
15.00 16i00
• WATER PERMITTED TO CONTACT SAMPLE
PROJECT
PROJECT NO.
Proposed EV Truck Leasing Facility
1380 S. E Street, San Bernardino
22051-F PLATE 8-2-1
SOILS SOUTHWEST INC.
Consulting Foundation Engineers
10 r--_ H
-- 1-
I-
:U
- ---
-"--
--
1--
1- -
• I
--
~--
~ .00
1![100
~ey.001
1.6.00 CONSOLIDATION TESTS
llJ0AI!>.$ IN 1~RS lli!~ij &Gll!l~R!;: P.©0lli
'ill·
' - ,\
A..
'
jL ~ iL
-i-
;-B-4@8ft .
,_ Undisturbed
i-Initial Moisture Content =12.5%
Final Moisture Content= 30.1 % -
I
- - = '•":"'" -
• WATER PERMITTED TO CONTACT SAMPLE
PROJECT Proposed EV Truck Leasing Facility
1380 S. E Street, San Bernardino
~
r----r-.
'
PROJECT NO. 22051-F PLATE B-2-2
SOILS SOUTHWEST INC.
Consulting Foundation Engineers
_ ,__
I
-,
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-
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I
I
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_,_
- - _,
- -
~
·-
SAND EQUIVALENT TEST
Test Date: October 19, 2022
Project No.: 22051-F
Job Name: WATT EV, Inc. Trucl< Leasing Facilty
1380 S. E Street, San Bernardino
Sample Location: 8-5@ 1-3'
Sample by: MC Tested by: RM
LABORATORY DATA
SAMPLE 1 2 3
NO.
TIME START 2:40 2:45 2:50
TIME SOAK 2:50 2:55 3:00
(10min.)
TIME AT 2:52 2:57 3:02
LEVEL
15ML
TIME of 3:12 3:17 3:22
READING
(20-min}
FINE, ML 5.5 5.4 5.8
COARSE, ML 1.7 1.7 1.5
SE= 100x 30.9 31.48 25.86
(coarse/fine)
SE Average 29.41
4 Soil Description: GP-SP Gravely, fine to coarse, pebbles, rock fragments, rocks
SOILS SOUTHWEST, INC.
CONSUL TING FOUNDATION
ENGINEERS
SAND EQUIVALENT TEST
Test Date: October 19, 2022
Project No.: 22051-F
Job Name: WATT EV, Inc. Truck Leasing Facilty
1380 S. E Street, San Bernardino
Sample Location: 8-6@ 1-3'
Sample by: MC Tested by: RM
LABORATORY DATA
SAMPLE 1 2 3
NO.
TIME START 3:35 3:40 3:45
TIME SOAK 3:45 3:50 3:55
(10 min.)
TIME AT 3:47 3:52 3:57
LEVEL
15ML
TIME of 4:07 4:12 4:17
READING
(20-min)
FINE, ML 6.8 6.7 7.1
COARSE, ML 0.5 0.6 0.5
SE= 100x 7.35 8.95 7.04
(coarse/fine)
SE Average 7.78
4 Soil Description: SM Silty fine to medium, pebbles, scattered rock fragments and rocks
SOILS SOUTHWEST, INC.
CONSULTING FOUNDATION
ENGINEERS
GRAIN SIZE DISTRIBUTION
Project: WATT EV, Inc Truck Leasing Job# 22051-F
Location: 1380 S. E Street, San Bernardino Boring No B-5@1-3' Sample No: 3 Description of Soil: GP-SP
Date of Sample: 10/15/2022
Tested By: RM Date of Testing: 10/19/2022
Sieve No. Sieve Openings in mm Percent Finer Grain Size % Retained ....
QI
C
~
..
C
QI
(.)
....
QI
D.
4 4.76 89.40 Gravel
10 2.38 80.80 Med. to Crs
20 0.84 64.60 Fines
40 0.42 46.00 Silts
60 0.28 32.60 Clays
100 0.149 20.60
200 0.074 8.40
Gravel Sand
100
90 -
80 -
70 -
60 50
40 30 -
20 -
10 0
Coarse to Medium I
9 ....
d z
0 N
d z
I
Fine
0 0
....
ci z
0 0
C'!
d z
I I I : I 1
1 Silt Clay
U.S. Standard Si~ve Size
I I I I I
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- 1:--1- I I I • I □- D i,---4
I I I I I
I I I I I
10.dO 1.00 Q,10 0.01 0.00
Grain diameter, mm
Visual Soil Description : Gravels with sand Sand - light gray brown, traces of silt, gravely fine to coarse sands with rock fragments.rocks
GP-SP Soil Classification:
System: USC
SOILS SOUTHWEST INC.
Consulting Foundation Engineers
11 43
38 8
0 IC J !: Lloo.d,ond~ot,P. , x j Cl zoou..-.......,s.;,,,,1c,..,.,., x J I ASC!7"-'"''°'°" )( I ~ :.screci;t1 Ma:.ard,ki,-:r: (97' X I C C-n.J~ ~~ :s:n-.e;:dat:r X I ~ v.-~~ S:il SUl'°<'t'f. H;me C Gil 0 n:t::.:.•,wteso t 1a,1r,ey,ic.~0\".usdl...gC\ i1-r:p ~·:.,0!~5c,!~.:::-.-- •.. ,\.r.• X ,:;_ Wtb~)' A -ey X +
~-- :ci
0 0, Is :.
X
~ ~ ~~
<=..,.tU, , ~bw.n""ill/ "-'<••...tS,utS....,,,. .._,, i<,,M•ySl .tu, ....,_._.., ~~~ l ,e> 1 _,., '"'' • ~•."7l1~111.~¥i?''S'9il~~yr.•,.._, AAA SollOaU &ipJc;,-4"" OownlO.iid SoU, ~t.lo
:--..•An.h £)
•11}1 ll':i 3/i"!J.QJ~~_J,OJ~ ~
s.n Bem.ardlno county sovtttwestem P-art.,
C..liloml• (CA677)
San BEmardlno County Southwestem ®
~art, California (CA677}
Mop Acres Pll.n:•nt of Unit M•pUnft Name VIA OI AOl Symh.ol Gr Grangeville fine 13.9 38.2%
sandy loam.
warm MAAT.
MLRA 19
TvC TuJunga gravelly 22.4 61 .8%
loamy sand, O to
9 percent slopes
Totals for Arca of 36.3 100.00/o
Interest
....,...,,._, wr.- .. ca"f CZ,
-= ~:: iii >J I. J..I - Id ~ W -~
7 ... - ,o,-rr.~
WattEV , Inc./ 1380 S. E Street., San Bernardino, CA
So ils Southwest, Inc.
APPENDIX C
Supplemental Seismic Design Parameters per 2019 CBC,
Liquefaction Analyses,
and
FEMA National Flood Hazard Layer Map
October 20, 2022
22051-F/BMP
c,AL:ro RII"' Pl'/l~I0/1 Oi Mllll: S MID C[OlOGY
lh0!-'A5 C. GAY J R. ACll.'lG '..TATCr:tO ~O.. IST
I ! .
'~ ,.,
. - -· ~:.:.- ::. :. _ . ..:__,_ . __ , __ - - ,-
1 -·,:
• I
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1 ' I ~ I.• .i (1
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1. i ..
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NA' u,LJJUTIOM
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~ ~:; ~~1:~•;d.:...~~~~~-~~=,.~~~~~1=t~':~
--- -.t,,111 l,i/olrr1d . &le.4 9"!'1Ut ~lat : ~ (lJ it>41Cth1 a:f:1',t"",J .... __ ... _ _ _ ca,1-,,,ry , ~ ol hi~ oll»t ~ ty , ... of lllll'l" Yalit · · ····- •· ... ~.!•d ..,._ fl C IOI , ,q,l..E..,,,."I c ■ ~u~ I>/ CJla;, Of i::oult\l O N? - -- _ ,1,r,111 ~~ IIOU.'Dlflil (ro? Jltld c;l!Kh:I,: t11lM r;~ y,>,,Nlfut GIO~•phic .. ,d O'.ll#l t.,11,,,, !Mf,n~ ., IHI N ,u~h al o,.,_. _ .... ry , .... ~ ..... g lpl!CUJ Sl...,tu z-, IOUoCUlin
0----0 Tn , ... 611 c:tin111.a JI l ll'lt;lhl--l k'.- .. ,irir n l1 ll'lfie!lr'Nc1 andfc!ir-J tJni:r..g paJ,.lJ 10 &I b d 1Mt .,...:laJ 1h1$111 n~ , ,.-g m.-.11 .. ' - '
STATf. or LJLIFORJ,11 ...
H4C RCSOU/;c.£.S ACiU lCY
OO'>RIJ.!Olf Of CON.!.Cll\'"TIOtl
c;,cc..,:i.:11•.oo.:, ,1 r 1
~,u,, ,,,.,,,,,.,,,.c:. . ... 1
STATE OF CALIFORNIA
SPECIAL STUDIES ZONES o.a-.,,,.. .. ~-pl- --'•'-
CMphl 7,,1,,, ~ :I. d IU C.W.,_ ,..wc flu-~• Co,h
SAN BERNARDINO SOLJTH QUADRANGLE
REVISED OFFICIAL MAP
Effective: January 1, 1977
.:LI'~ Acting State Geologisl
s.i.:1 ern11Ano :110 ~-JTH o uA.:>;u1:c t E
C,t.L!FOfl;n>,
).!, m,-;lfTF. 01.J'll':0 (l(11>.JG~JoFJll("1
• I
t ... - ,c: . -, ~ ... , .••. ,~o-;..,-...,.._......--;,~_..,_. •• " • .........,~,-~ .. .,- ....... -_. ~.:..::: ~ -;-~::.~--:..";;.!.' .... ~':"'..!!:-=.!:.:::;-;:.;:::::-~.._ .............. "' :.,,. ~ .. w . ... ,.._.,...,..., ., l-'to<l~:---.,,..,,:.,~•--.._-Lr-, µ o&.1~0,...,, ,__~,t.a ...... ., .. il .... ~,...._;.:::---... .. - ... --, t ....... -L----..., ,1111-:.u,r-:-'W"M_,,.,,._,,..,....1.;- .i.c.,,,..._,C""ll,1,,, ~•"..., , _, cr-..-N•• ~ ••. ::.:.; ... ~_,,..., ... , c, ~':.......,a0~ .. .=c....,.._..,.c.r,.__,.. u1, • •-c1 all'011TAJn • •Ll>,H NOTS
IJ 1h11 ~ •~ r,,ryn:J'l 1~ 1fJ~1 .'lllA'.,. Y-t.'r1 t,i.tJ , .«nu •CMa UII JJllK<Jl1h ,•ch1J rClltflOIOllfJl:1,IJl•ifl,c,w,d&r/lJ .
.ll F.,J'h v.c .. n ..,, ru ti.Ult ,,, 111..olWl'r,g 1,1:t• t.o.1~1 - ■ 01 ,,._. 2~ JtvlfiN Ul/\•l .
3J l>l•k!,,ret-f,c1bc:11ofll111$:V'.111ti1'tJu-inilah.1andlllal.x&t.i::11afMLIIU\J!. '""' .... tr11d C:lt ~ - t,.ni .. ,.u.e.o11i d~ T,.:.1 a.v, """ C1r•r.1 ll .,_,:;l,llld~ a, P,HJIII.: l'IIJI IM;I' ac:111, t,a_..-,., , Ui1 qu1lctOI d.:& i,ud U f>ql'J' --0. Tl» lni'-' ""2-n ll1vt M l Oo,, hlJ ~ri ~ i),b ~ ~
I) F...,lll,,b,.,.1.lo110,,N1.....,pl111ott..+6c:l.,.tbu .... ,u,1Wb&Mi,,t1bl 'l.lo1"'1\:0n dn1bp16ClrN~l11Wind\1lrnayN1~1~und.,~7!,0Ml.,_2 .
s,:,., ,, 2611 cl,., c,1!:11t1f1 Publ>.: llu,wc:u Cct'L U.S. Geological Survey - Earthqu ake Hazards Program
2008 National Seismic Hazard Maps - Source Parameters
New Search
IJ 1 .-f
J\j,,{ IIH ,,
·,111 • l•i11 flip -. l1 p
t.' 11 1•11, I , 111 11, -
I , 1 11~,t l1
H ,11 ,1 • ', i1il' 1111 I l 1; \ q11 1
inr.m ,., P -11 ,· (,1 .. , .. ,) Iii , ':i'll\· (1(1 11) 11 :ilil (1 .,,,) ( 1o1111/•1•)
0.16 5.il!Lli!Qlili); S.li'i.t5 11£ +A+ CC i-13+ s.M CA n/a 90 V strike
0.1 slip
15 24 1
0.16 S;rn Jac1nto,SflV CA 6 90 V strike 0
slip 16 45
0.16 San Jac1nto;SBV+SJV CA 11/a 90 V strike 0 lG 88 slip
0.16 San Jacinto:SBV+SJV+A CA n/a 90 stril<e
V
slip 0 16 134
0.16 San Jacinto;SBV+SJV+AtC CA n/a 90 V strike
slip 0 17 181
0.16 S;in Jacinto;SBV•S JV+A I Cf CA n/a 90 strike V 0 slip 16 181
0.16 San Jacinto;SBV+SJV+A ~cc +B CA n/a 90 V strike
slip
0.1 15 215
strike 5.16 Siln .J;ic1nt,1;~ CA n/a 90 V 0 17 136 slip
5.16 San Jacinlo;SJV+A+CC CA n/a 90 V strike
slip
0 lG 136
5.16 ~l[Q;Sl',l CA 18 90 strike V 0
slip
16 43
strike 5.16 San Jacinto:SJY-A+CC•B+SM CA n/a 90 V 0.1 15 196 slip
5.16 San Jacinto;SJY•A•CC+B CA n/a 90 strike
V 0.1
slip
15 170
5.16 San Jacinto:SJV+A CA n/a 90 strike V 0
slip 17 89
6.50 S San And~as;es+NM+SM+NSB+SSB+BG+co CA n/a 85 strike
0.1 slip 13 390
6.50 s. San
Andreas:CH+CC +BB+NM+SM+NSB+SSB+BG+CO
CA n/a 86 strike
slip
0.1 13 512
6.50 s, Saq Andreas:NSB+SSB+BG+CO CA 11/a 79 strike 0.2 slip
12 206
6.50 ~ 11 Andre~s:S~,H NSB+SSB CA 11/a 90 V strike 0 13 176 slip
U.S. Geologica l Survey - Earthq uake Hazards Program
2008 National Seismic Hazard Maps - Source
Parameters
New Search
r-.,, it i 11 .. , , • i j ,
San Jacinto;SBV+SJV+A+CC+B+SM California
( ,I llf ;'; I''
Dip (degrees) 90
Dip direction V
Sense of slip strike slip
Rupture top (km) 0.1
Rupture bottom (km) 15
Rake (degrees) 180
Length (km) 241
i'•~I l )F \I/'. I I II •
Slip Rate n/a
Probability of activity 1
I· I I •~ I.~ Ii 1t : ·1 I l Ii I\ 1,111 '
Minimum magnitude 6.5 6.5
Maximum magnitud e 7.80 7.88
b-value 0.8 0.8
I 1 1 i ti' \ ,. fl)! J . h l i I ,
Moment 9.61e-05 / 9.61e-
2.1 NA/NA 0.25
Balanced 05
Moment 9.6le-05 / 9.6le-
2.2 NA/NA 0.10
Balanced 05
Moment 9.6le -05 / 9.61e-
2.3 NA/NA 0.15
Balanced 05
1 1 st Va lue is based on Ellsworth relat ion and 2nd va lue is based on Hanks and Bakun relation
ASCE.
MIERICAN soom Ill' i;Mt rnr,N(ERS
Address:
No Address at This
Location
Ill• ' .. I :., ,M
r
~,., ..... \ ' ,;
1 •,1-•
hll ps: //a see 7haza rdtool.online/
ASCE 7 Hazards Report
Standard: ASCE/SEI 7-16
Risk Category: 111
Soil Class: D - Stiff Soil
\ ' • I ') ,t .t·1 "f
/
//
/
'~ ' 1 1 I
, ,, 1,l lh
,
/
Elevation: 980.71 ft (NAVO 88)
Latitude: 34.07511
Longitude: -117.294687
\/
'
:,,,,11
8Hrll •I r,.,
Hl,il,LH ,I
I
..... I
, ,,,, I
. -L ..... ""_,,
l " t1J l 1•lt \
... ,111 '" " " •
r
,,
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.I, ,o ·I •• ~
.... ,t
l~~~~tl•
,...,,., ..
--._
',\ 11 11 11 1 •
,. ,
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, ' ', ~
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\/ lltj " !.
,,
-.. _v•,;i..l t .l 1
--: ~·:·- ,., ....
h .. ;rt , •
••r•_.
Mon Oct 17 2022
ASCE.
AMER1CNI SOCll'lY Ill' CMl f~GIN£i!l$
Seismic
Site Soil Class: D - Stiff Soil
Results:
2.445
0.98 1
N/A
Sot
TL :
PGA :
PGAM :
N/A
8 1.029
1.132
SMs 2.445 F ro A 1.1
SM, N/A 10 : ·f .25
Sos 1.63 Cv: 1.5
Ground motion hazard analysis may be required. See ASCE/SEI 7-16 Section 11.4.8.
Data Accessed: Mon Oct 17 2022
Date Source: USGS Seismic Design Maps
hllp s: //a see 7hazardtool.onlinel Page 2 of 3 Mon Oct 17 2022 Californlo
Department of
Conservation
Home I CGS I Ground Motion lnterpolator
Ground Motion Interpolator
Ground Motion Interpolator (2008)
Longitude: -117.294687
Latitude: 134.07511
Site Condition (VS30): 1270 ( 180-1 050 m/s ec)
Return Period:
2% in SO years 10% in SO years
Spectral Acceleration:
PGA 0.2 second SA 1.0 second SA
[ Submit ]
Inputs: Result:
-117 .294687, 34.07511
~~~~\;~~ ~:= ~SC ............. ... ?.:~.~~.~ .............. ..
PGA
Information and Disclaimer
CGSMENU
►
,.. ... ,. ...... ,,.._, ___ ~
o .-- .ot .. .., .... -...... , ...._ ............ ... 1:1:•.:..":.:.::-..... , ...
RIVERSIDE COUNTY
San Bernardino County LnrkJ Uso Plan
GENERAL PLAN
Geologlc Hotard O~r1nys
- ~ = •------=-=--- ·
{
-
0. , .. . .... ...... . ..- i.. .. , __,
,-,, ..
, .. ,_
'
I
I· ,, _Jc: . -. I j1 I ~:::-I
I
I
• II I I
11 - · ....
I ·
~ - ---'- -I
- •-······ ... -. -----..- -·•··•' -·
lfWC
fi.ll'IIJ.omrC:.uG
LIQUEFACT ION ANALYSIS
Watt Ev, Inc Truck Leasing Facility-Pre Construction
Hole No.=B-1 Water Depth=9.13 ft Surface Elev.=978 Magnitude=7. 8 Acceleration=O. 653g
Shear Stress Ratio
(ft) O
g
M ]
i
~
- 0 ~~-~~-~~--~~-~-
- 5
- ·10
- 15
20 25
;;!i fs1 =1
;;;, - 30 ~c=R=R- -- _---=-==---,---,,..Jll-a.~:oL
I · Shaded Zone has Liquefaction Potential
IJ) -
t
I:: -
:~ u
CivilTech Corporation
Factor of Safety Settlement Soil Description
O 1 5 o (in.) 10
1 1 1 1 1 ·r 11 1, rrr •. -i:1, SAND . silty, slightly gravely, fine to S = 1.761n.
Saturated
Unsaturat. -
22051-F
medium coarse with scattered pebbles
SAND -silty, fine to medi\1m coarse,
pebbles, rocks, cobbles
SAND-silty, fine to medillm
SAND - gravely coarse, rock fragments,
scattered rock 1.5 inches
Plate A-1
*************************************************************************************
LIQUEFACTION ANALYSIS SUMMARY
Copyright by CivilTech Software
www.civiltech.com
************************************************************************************* Font: Courier New, Regular, Size 8 is recommended for this report.
Licensed to , 10/20/2022 3:27:57 PM
Input File Name: UNTITLED
Title: Watt Ev, Inc Truck Leasing Facility-Pre Construction Subtitle: 22051-F
Surface Elev.=978
Hole No.=B-1
Depth of Hole= 30.00 ft
Water Table during Earthquake= 9.13 ft
Water Table during In-Situ Testing= 9.13 ft
Max. Acceleration= 0.65 g
Earthquake Magnitude= 7.80
Input Data:
Surface Elev.=978
Hole No.=B-1
Depth of Hole=30.00 ft
Water Table during Earthquake= 9.13 ft
Water Table during In-Situ Testing= 9.13 ft
Max. Acceleration=0.65 g
Earthquake Magnitude=7.80
No-Liquefiable Soils: CL, OL are Non-Liq . Soil
1. SPT or BPT Calculation.
2. Settlement Analysis Method: Ishihara/ Yoshimine
3. Fines Correction for Liquefaction: Stark/Olson et al.*
4. Fine Correction for Settlement : During Liquefaction*
5. Settlement Calculation in: All zones*
6. Hammer Energy Ratio,
7. Borehole Diameter,
8. Sampling Method,
Ce = 1.0
Cb= 1
Cs= 1
9. User request factor of safety (apply to CSR), User= 1.3 Plot one CSR curve (fsl=l)
10. Use Curve Smoothing: Yes*
* Recommended Option s
In-Situ Test Data:
Depth SPT
ft
0.00 31.00
3.00 31.00
5.00 16.00
12.00 10.00
20.00 42.00
30.00 44.00
gamma Fines
pcf %
117.00 8.00
117.00 8.00
113.00 8.00
96.00 26.00
112.00 6.00
112.00 5.00
Output Results:
Settlement of Saturated Sands=l.57 in.
Settlement of Unsaturated Sands=0.19 in.
Total Settlement of Saturated and Unsaturated Sands=l.76 in.
Differential Settlement=0.881 to 1.164 in.
LIQUEFACTION ANALYSIS
Watt Ev, Inc Truck Leasing Facility-Post Construction
Hole No.=B-1 Water Depth=9.13 ft Surface Elev.=978
Shear Stress Ratio Factor of Safety Settlement
f!!)o ~0--~--~~ -~----~1 0 1 5 0 (in.)
- 5
- 10
- 15
- 20
25 e 8 -
-5 '" ~ ·o
I
« fs1=1
gl - JO CRR - CSR fs1-
J. - Shaded Zone has Liquefaction Potential
0 en
-5
~ -·;;
u
CivilTech Corporation
I I I I I I I I -1~ 1~ 1~1~1 ~, -l ~l ~I
S = 0.03 in.
Saturated
Unsaturat. -
22051-F
Magnitude=7.8
Acceleration=O. 653g
Soil Description
SAND • silty, slightly gravely, fine to
medium coarse with scattered pebbles
SAND -silty, fine lo medium coarse,
pebbles, rocks, cobbles
• , • SAND-silty, fine to medium
SAND . gravely coarse, rock fragments,
scattered rock 1.5 inches
*************************************************************************************
LIQUEFACTION ANALYSIS SUMMARY
Copyright by CivilTech Software
www.civiltech.com
************************************************************************************* Font : Courier New, Regular, Size 8 is recommended for this report.
Licensed to , 10/20/2022 3:32:59 PM
Input File Name: D:\LiquefyS\22051-F WattEVSBD.liq
Title : Watt Ev, Inc Truck Leasing Facility -Post Construction Subtitle : 22051-F
Surface Elev.=978
Hole No.=B-1
Depth of Hole= 30.00 ft
Water Table during Earthquake= 9.13 ft
Water Ta ble during In-Situ Testing= 9.13 ft
Max. Acceleration= 0.65 g
Earthquake Magnitud e= 7.80
Input Data:
Surface Elev.=978
Hole No.=B-1
Depth of Hole=30.00 ft
Water Table during Earthquake= 9.13 ft
Water Table during In-Situ Testing = 9.13 ft
Max . Acceleration=0 .65 g
Earthquake M agnitude = 7.80
No-Liquefiabl e Soils: CL, OL are Non-Liq . Soil
1. SPT or BPT Calculation.
2. Settlement Analysis Method: Ishihara/ Yoshimine
3. Fines Correction for Liquefaction: Stark/Olson et al.*
4. Fine Correction for Settlement: Post Liquefaction
S. Settlement Calculation in: All zones*
6. Hammer Energy Ratio,
7. Borehole Diameter,
8. Sampling Method,
Ce= 1.0
Cb= 1
Cs= 1
9. User request factor of safety (apply to CSR), User= 1.3 Plot one CSR curve (fsl=l)
10. Use Curve Smoothing: Yes*
* Recommended Options
In-Situ Test Data:
Depth SPT
ft
gamma Fines
pcf %
0.00 31.00 117.00 8.00
3.00 31.00 117.00 8.00
5.00 30 .00 113 .00 8.00
12.00 30.00 112.00 26 .00
20.00 42.00 112.00 6.00
30.00 44.00 112.00 5.00
Output Results:
Settlem ent of Saturated Sands=0.00 in.
Settlement of Unsaturated Sands=0.03 in.
Total Settlement of Saturated and Unsa turat ed Sands=0.03 in.
Differ ential Settlement=0.014 to 0.019 in.
National Flood Hazard Layer FIRMette -~~ FEMA
0 250 500 1,000 1,500
Feet
2,000
Basemap: USGS National Map: Ortho/magery: DalD refreshed October, 2020 Legend
5-."E FIS REPORT FOR DETAILED LEGBIO AKO INOO: MAP FOR RRM PANa LAYOUT
SPECIAL FLOOD
HAZARD AREAS
OTHER AREAS OF
FLOOD HAZARD
OTHER AREAS
-~
Without Base Flood Elevation (BFE)
Zon~ .4..V. .499
With BFE or Depth Zone AE. ~o. AH. VE. AR
Regulatory Flooclway
0.2% Annual Chance Flood Hazard. Areas
of 1% annual chance flood with average
depth less than one foot or with drainage
areas of less than one square mile zo...,c- x
Future Conditions 1% Annual
Chance Flood Hazard Zono x
Area wtth Reduced Flood Risk due to
Levee.. See Notes. Zane x
Area with Flood Risk due to Levee Zon• o
NO SCREEN Area of Minimal Flood Hazard Zone X
Effective LOMRs
Area of Undetermined Flood Hazard z..,,, o
GENERAL
STRUCTURES 11111 I I I
Channel, Culvert, or Stenn Sewer
Levee. Dike. or Floodwa II
OTHER
FEATURES
MAP PANELS
'
Cross Sections with 1% Annual Cha.nee
Water Surface Bevat ion
, - - - Coastal Transect
- i,i - Base Flood Elevation Line (BFE)
= Limit of Study
--- Jurisdiction Boundary
Coastal Transect Baseline
Profile Baseline
Hydrographic Feature
Digital Cata AvaUable N
No Digital Data Available
Unmapped
+
The pin displayed on the map is an approximate
point selected by the user and does not represent
an author itative property location.
This map complies with FEMA's standards for the use of
digital flood maps If it is not void as described below.
The basemap shown compiles with FEMA's basemap
accuracy standards
The flood hazard information is derlwd direcl1y from the authorltatiYe NFHL web services provided by FEMA. This map was exported on 10/1.7 / 2022 at 1.:45 PM and does not
refl ect changes or amendments subsequent to this date and time. The NFHL and effective information may change or
become supel'$eded by new data over time.
This map Image Is void If the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map aeation date, commun ity Identifiers.
FIRM panel number, and FIRM effective date. Map Images for unmapped and unmodemlzlMI areas cannot be used for
regulatory purposes.
Wall EV, Inc./ 1380 S. E Street. , San Bernardino, CA
Soi ls Southwest, Inc.
APPENDIX D
Soil Infiltration Test Data
Porchet Method Calculation Summary
October 20, 2022
22051-F/BMP
Test II Test Hole Depth Time Interva l Initial Depth
no. (Inches) (inches)
D, l!.r 00 (in)
P-1 144 10 120
P-2 144 10 120
Observed Infiltration Rate (tt) = AH60r/At (r+2Havg)
A B C
.6.H60r M (r+2Havgl A/B= inc/hr
P-1 2940 397.5 7.40
P-2 2760 405 6.81
Conversion Table {Porchet Method )
WattEV
1380 S. E Street~ San Bernardino
Project No. 22051-FBMP
Final Depth
(inches)
D1 (in)
132.25
131.5
Initial Water Height Final Water Height Change Height/Time (inches (inches)
H0 =D,-D0 H, = D,-D; ~ 1-. / t!.D= H0 -H1
24 11.75 12.25
24 12.S 11.S
legend
.6. H /6D = Observed Field Rate
H0 = inches of water filled from bottom
D0 = initial height of wate r (inches) from bottom
Of= final heigh of water {inches) from bottom
Columns A-8-C : Porchet Conversion Calculations
Column C: Observed Rate fo llowing Porchet Conversion
Dt = depth of test hole bottom (inches)
Average Head Height/nme
" -"'t =
(Ho+Hf)/2
17.875
18.25 ------ -· ---
I Percolation Test Data Sheet I - ---- --
Project: CvAT7 l:;, V h11. v c;._ L tv'-\:,e -ti1u l-11,, Project No. 2 2 a'5 \ ·~J3c-,(-' Test Hole No: r -i Tested By: (,2. M\ I JF- Date: I Cl \ itd ZL I Depth of Test Hol e, D1 j lj "i uses So il Classificat io n S() Test Hol e Dimensions (inche s) Length Width
. Diameter (if round) = 8.0 in . Sides (if rectangular)= Sandy Soi l Criteria Test*
fit Do Df no Greater Than
Time Initial Final Change in or Equal to
Trial Interval Depth to De'pth to Water 6.0 inches???
No. Start Time Stop Time (min) Water (in,) Water (in.} Level (in.) (Y/N} 1 q,22- Ch 'l :-,- 25 l 2.o l C\ ½ z~ ''i
2 'l', '11 IL\ '\ ~ 25 l z.o ) 4 ~ 'l ~"\ 'y·
* If tw o consective measurements show that six inches of water seeps away in.less than I 25 m inutes, the t est shall be run for an additi ona l hour with measurem ents taken every 10 minutes.
Otherwise, pre-soak {fiill ) overnight. Obtain at least twe lve measurements per hole over at least six hour s (appro ximately 30 minu te interva ls) with a precision of at least 0.25." fit Do D1 1m /:,T/fiD
Time Initial Final Change in Percolation
Trial Interval Depth to Depth to Water Rate
No. Start Time Stop Time (min) Water (in.) Water (in.) Level (in.) • (min.fin .} 1 lo'- f5' 10', l,S- \0 l Z..o 13&. 25 i6.zJ; O,b L
2 jo ;o; /o '. :,G, 10 I '2 o J ·1 b . 1:.,-0 /6 ,oo 0,f-3 3 ;o ·; 31 10: 'f} /0 Ito /)5,"2.S 15,2> 0, (; c;
4 /u ; Y 'c3 11'>< 515 lo I 10 i :>L/, 75 /'-/. 75° 0 -Gi8 5 j~ '. 5'7 I I, t)c=:j 10 l 2-o l 3 ~. oo /t..). 1.,0 O, 1-l 6 \I , IO lu', 'l.o IO I 'LO / 33 ,YO /3. ro 0 ; 1--i..f 7 Io . 2.1 ·10·, al JO I 2.0 / 33, <:,o I 3 -60 6,"t?-
8 11.Y. Y2. \(.)·, '12... /0 ) 'lo 132 -t'S I Ll>- o. ·1~ 9 /0,\-J3 \0 ,53 /0 110 (32 , )"S" I 2,1 ,; 6 :?b
10 /0 5'1 lf', _o<t ·,q - \lo _ I 3L2_:i- -- - /J, 1---S ◊- - -~2- . - . .. •- -- · 11 //; cS' J) ;i.> /0 \to 13) '?~ (i), ,.5 (.),eL
12 11·,;, I t'. ,,u; /O I 'Z. o /Jl.. ·zs IJ,?5 O ,t<,L 13 /I~ 2. 7 //, 3t /0 l '2... t) I 3J.. 2 • .-5- /;? , 25 0 ,'csL 14 15
16 17
18 Comm e nts
Percolation Test Data Sheet
= ,~ ====;==========~==='4
".Prnject: f V IJ A f T / S 4.., ---~ e..r ... "'I,,.../.- "I iJ- - Project No. :z. 2. C> s· I • "B /-7 /7 4-;-e_sc..__t_H_o_le_N_o_:- -----"------,IP,---- 7.-__ -~--- - -T~~~ -rj l? °',i•: ;°(.. )I,,, •1 oz.. Date: IC:\ · ]cl' 2.Z.. iJe pth ofTe st Hole, Dr J '1 ti uses Soil •Classification Test Hole Dimensions (inches) Length Width
. Diameter (if round)== 8.0 in. Sides (if rectangular)== ;vu1t'V\ Sandy Soil Criteria Test *
Trial
No. St<1rt Time Stop Tim e
Tim e
Inte rval
(min)
25 25
Do
Initi al
Depth to
Wat er (in.)
i)., () ,,
rJ J ''
D1 CJ.D
Final Change in
Depth to Water
Water (in .) L evel (in.)
J '1r' J":(I
I '1<J .1/L '' ., (I ½· '( ,... ,_
·-
* If two consective measurement s show that six inches of wat er seeps away in less than Greater Than
or Equal to
6.0 inches? ??
(Y/N)
y
'1/
25 minu tes, the test shall be run for an additional hour with measurements taken every 10 minutes.
Otherwi se, pre-soak (fiill) overnight . Obtain at least twelve neasurernents per hole over at least six hour s (approximately 30 minute intervals) with a precision of at least 0.25." ~----~----~--------1
fit Do D, CJ.D CJ.TI CJ.D
Time Initial Final Change in Percolation
Trial Int erval Depth to Depth to Water Rate
No. Start Time Stop Time (min) Water (in .) W~ter (in .) Level (in.) (min./in.) l I v•:; :z. /v .: )?... /6 / '2 t/'' '3/ ,1/~ I I 1/-;t. 0 S:,7- -,
;u};JJ /c./.' '77 ( c) I Z..,.t7 l~ /} I
1 /z / I
1 h o.~n L
3 /U '. t,i 1 {u ;/ t.-l //) ! ?/I} -, I 71_ 1/-z_ ' /; .1/-z.._._ 0 .b)--- 4 /" :.J/ I/ ~u__f lt.J I Z,·,; r . / J / I l-i II /1- 6 ,b)- ti
)/ ',uG I I ·, I l? I U /~_,.,_ __/ J_l__i1--- ) I I///.-- (),b+ ,-.
//'· )} /1 :1 1 I rJ
/(
1 -S/ 1iz.... ) I i/1__,, c.~7-/1- U
7 8
r-9-- -------------- ---
- - --~--+-------+---------
I 'IQ
ii1
12 13
' l 14
' i ; 151 ,
--+-----+-----+----+-------+----'·---+------+---------} 16 17
18 Comments
lV/0.IAVf: RIVER WATEHSMED Wa•ie,· Quaiii V \\/lanc1gerne11"! Plan (WQIVi;'l) Form 4.3-3 Infiltration LID BMP ~ including underground BMPs (D.'\. !! 1 Remaining LID DCV not met by site design BMP (ft3}: Vu,mel = Form 4.2-1 Item 7 - Form 4,3-2 Jtem19 DA OMA
BMP Type Use columns to the right to comp ute runoff volume retention DA OMA DA OMA BMP Type from proposed infiltration BMP (select BMP from Tobie 5-4 in TGD for BMP Type 8MP Type (Use additional farms WQMP) - Use additional forms for more BMPs
fo r more BMPs)
2 Infiltr ation rate of underlyin g soils (In/hr) See Section 5.4.2 ond Appendi x C of the TGD for WQMP for minimum requirements for /,LIO 6, 't>\ assessment methods
3 Infiltration safety factor See TGD Section 5.4.2 and Appendix U -
4 Design percolation rate (in/hr) P.~,,• = Item 2 / Item 3 5 Ponded water drawdown tim e (hr) Copy Item 6 in Form 4.2-1 6 Ma ximum ponding depth (ft) BMP specific, see Table 5-4 of the TGD for WQMP for BMP design details
7 Ponding Depth (ft) d,MP = Minimum of (1/1 2*Item 4*It em 5) or Item 6 8 1nfiltrating surface area, SAaMP (ft2) the lesser of the area needed/or Infiltration of full DCVor minimum space requirements from Tobie 5, 7 of the TGD for WQMP
9 Amended soil depth, dmedia (ft) Only included in certain BMP types, see Tobie 5-4 in the TGD for WQMP for reference to BMP design details 10 Amended soil poro sity
11 Gravel depth, dmedia (ft) Only included in certain BMP types, see Table 5-4 of the TGD for WQMP f or BMP design details
1Z ' Gravel porosity
13 Duration of storm ~s basin is filling (hrs) Typical~ 3hrs •••••••• • ••••••••••••••••••••••••••••••••• ■■■■■ a••••••• .......... ..... ............... ~--·················· 14 Above Ground Rete'ntion Volume (ft3} V""'''°' = Item B • [lt em7 + (Item 9 'Item 10) _+ (ltem·11 * Item 12) + {Item 13 • {Item 4 / 12))) 15 Underground Retention Volume (ft3} Volume determined using manufacturer's specificat]ans and calculations
16 Total Retention Volume from LID !~filtr ation BMPs: (Sum of Item s 14 and 15 for all infiltration BMP included in plan) ~--··············· ········· ············~·················································· ········· ·········· 17 Fractio n of DCV achieved with infiltr ation BMP: % Retention %= Item 16 / Form 4.2-1 Item 7 18 Is ful l LID DCV retained onsite with combination of hydrologic source control and LID retention/infiltration BMPs? Yes D 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, lnfiltrotlng Surface Area, such that the portion of the site area used f or retention and infiltration BMPs equals or exceeds the minimum effective area thresholds (Table 5-7 of the TGD fo r WQMP) for the applicable category of development and repeat all above calculati ons. 4-19
WattEV , Inc./ 1380 S. E Street. , San Bernardino, CA 22051-F/BMP
PROFESSIONAL LIMITATIONS
Our investigation was performed using the degree of care and skill ordinarily exercised, under similar circumstances by other reputable soils engineers practicing in these general or similar localities. No other warranty, expressed or implied, is made as to the conclusions and professional advice included in this report.
The investigations are based on soil samples only, consequently the recommendations provided shall be considered 'preliminary'. The samples taken and used for testing and the observations made are believed representative of site conditions; however, soil and geologic conditions can vary significantly between boring. As in most major projects, conditions revealed by excavations may vary with preliminary findings . If this occurs, the changed conditions must be evaluated by the project soils engineer and designs adjusted as required or alternate design recommended.
The report is issued with the understanding that it is the responsibility of the owner or of his/her representative to ensure that the information and recommendations contained herein are brought to the attention of the project architect and engineers . Appropriate recommendation s shall be incorporated into structural plans.
The findings of this report are valid as of this present date. However, changes in the conditions of a property can occur with the passage of time, whether they are due to natural process or the works of man on this or adjacent properties. In addition, changes in applicable or appropriate standards may occur from legislation or broadening of knowledge. Accordingly, the findings of this report may be invalidated wholly or partially by change outside of our control. Therefore, this report is subject to review and shall be updated after a period of one year.
RECOMMENDED SERVICES
The review of grading plans and specifications , field observations and testing by a geotechnical representat ive of this office is integral part of the conclusions and recommendations made in this report. If Soils Southwest, Inc. (SSW) is not retained for these services, the Client agrees to assume SSWs responsibility for any potential claims that may arise during and after construction or during the lifetime use of the structure and its appurtenant.
The recommendations supplied shall be considered valid and applicable , provided the following conditions, at a minimum, are met:
i. Pre-grade meeting with the contractor, public agency, and the soils engineer, ii. Excavated bottom inspections and verifications by soils engineer prior to backfill placement, iii. Continuous observations and testing during site preparation and structural fill soils placement, iv. Observation and inspection of footing trenching prior to steel and concrete placement, v Subgrade verifications including plumbing trenches backfills prior to concrete slab-on-grade placement,
vi. On and off-site utility trenches backfills testing and verifications , vii. Precise-grading plan review, and
viii. Consultations as required during construction or upon request.
In the event that tl1e above conditions are not fulfilled , Soils Southwest , Inc. will assume no responsibility for any structural distresses during the lifetime use of the planned development .
Soils Southw est, Inc. October 20, 2022 Page 35
TECHNICAL GUIDANCE DOCUMENT APPENDICES
Worksheet H: Factor of Safety and Design Infiltration Rate and Worksheet Assigned Factor Product (p)
Factor Category Factor Description Weight (w) Value (v) p =wxv Soil assessment methods 0.25 1 0.25
Predominant soil texture 0.25 1 0.25
A Suitability Site soil variability 0.25 1 0.25
Assessment - - ---
Depth to groundwater/ impervious 0.25 2 0.50 layer
Suitability Assessment Safety Factor, SA= LP 1.25
Tributary area size 0.25 2 0 .50
- - - --- - - -r
Level of pretreatmenU expected 0.25 2 0.50 sediment loads B Design --
Redundancy 0.25 3 0.75
Compaction during construction 0.25 2 0.50
Design Safety Factor, S8 = LP 2.25
Combined Safety Factor, STotai= SA x Ss 2.81
Observed Infiltration Rate, inch/hr, Kob served
7.10 (corrected for test-specific bias)
Design Infiltration Rate, in/hr, KoESIGN = Kobserv ed / STotal 2.52 Supporting Data
Briefly describe infiltration test and provide reference to test forms:
See soils report No. 22051-F/BMP by Soils Southwest, Inc . in Appendix 64.
The observed infiltration rate was calculated averaging the two infiltration rates observed using the two Porchet method tests no. P-1 and P-2 :
(740 + 6.81)/2 = 7.10
Note: The minimum combined adjustment factor shall not be less than 2.0 and the maximum combined adjustment factor shall not exceed 9.0.
-
-
VII-35 December 20, 2013
Source Control/Site Design BMPs
Spill Prevention, Control & Cleanup SC-11
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 suppl y 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:
Objectives
■ Cover
■ Contain
■ Educate
■ Reduce / Minimize
■ Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Minimum BMPs Covered
@
0 ~
@
ta,
~
9 Good Housekeeping
Preventative
Maintenance
Spill and Leak
Prevention and
Response
Material Handling &
tyaste Manggement
Erosion and Sediment
Controls
Employee Training
f'..r:.ogr:.gm .
Quality Assurance
Record Keeping
✓
. .......... --•-···
✓
✓
✓
✓
✓
✓ Description of the facility, owner and
address, activities, chemicals, and
quantities present; CALIFORNIA STORMWATER
QUALITY ASSOCIATfON '
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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 . t{m Spill and Leak Prevention and Response
\;J;jl 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 .
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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 properl y 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 bur y 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 promptl y and dispose of properl y. □ For larger spills, a private spill cleanup company or Hazmat team may be necessary.
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Spill Prevention, Control & Cleanup SC-11
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 emplo yees 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 Count ermeasure Plan and the plan should be readily available.
□ Train employees to recognize and report illegal dumping incidents.
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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 ofthe spill/ leak/ discharge;
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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 V1ce versa.
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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 storm water. 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 th e 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 indu strial 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 Depmtment).
□ Develop procedures to prevent / mitigate spills to storm drain systems. □ Identify responsible depmtments.
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Spill Prevention, Control & Cleanup SC-11
□ Develop and standardize reporting procedures, conta inment, 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.go v/wlr/dss/spcm.htm.
Orange County Stormwater Program, Best Management Practic es for Industrial/Commercial Business Activities. Available online at:
http://ocwatersheds.com /documents/bmp / indu strialcommercialbusinessesactivities 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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Waste Handling & Disposal SC-34
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
e Good Housekeeping ✓
---------
~ Preventative
~ Maintenance
✓
e 5!niJ ~~!~~~~ -~~evention . ✓
~ Material Handling &
~ Waste Management
~ Erosion and Sediment
-r'il Controls
✓
~ Employee Training ✓
~ Program
~ Quality Assurance Record ✓
\;j1 Keeping
CALIFORNIA STORMWATER
QUALITY ASSOCIATION '
September 2014 California Stormwater BMP Handbook
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Waste Handling & Disposal SC-34
□ 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.
~ Pr
0 eventative 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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Waste Handling & Disposal SC-34
□ 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 ofthe 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 read y at all times to deal immediately with major spills.
□ Collect all spilled liquids and properl y 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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Waste Handling & Disposal SC-34
□ 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 impro vement 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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Waste Handling & Disposal SC-34
□ 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 Storm water 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 Storm water Program, Best Management Practices for Industrial/Commercial Business Activities. Available online at:
http://ocwatersheds.com/documents/bmp/industrialcommercialbusinessesactivities September 2014 California Stormwater BMP Handbook
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www.casqa.org
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Waste Handling & Disposal SC-34
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/IndBMPo21413 .pdf.
Sacramento Stormwater Management Program. Best Management Practices for Industrial Storm Water Pollution Control. Available online at:
http:/ /www.msa.saccounty.net /sactostormwater I documents /guides /industrial- BMP manual.pdf.
Sacramento County Environmental Management Stormwater Program: Best Management Practices. Available online at:
http://www.emd .saccounty.net/EnvH ealth/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.
September 2014 California Stormwater BMP Handbook
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Building & Grounds Maintenance SC-41
Description
Storm water 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.
January 2003 California Stormwater BMP Handbook
Industrial and Commercial
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Objectives
■ Cover
■ Contain
■ Educate
■ Reduce/Minimize
■ Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
✓
✓
✓
✓
Stormwater
Quality
Association
1 of 5
SC-41 Building & Grounds Maintenance
■ 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 waterwa ys 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
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Building & Grounds Maintenance SC-41
■ 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 waterwa ys 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 alternati ve 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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SC-41 Building & Grounds Maintenance
■ 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-d ate. ■ 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 materi als. ■ Familiarize employees with the Spill Prevention Control and Counterm easure Plan. ■ Clean up spills immediately .
Other Considerations
Alternative pest/wee d 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
Sweep paved areas re gularly to collect loose particles. Wipe up spills with rags and other absorbent material immediatel y, do not hose down the area to a storm drain. 4 of 5 California Stormwater BMP Handbook
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Building & Grounds Maintenance SC-41
Supplemental Information
Further Detail of the BMP
Fire Sprinkl er Line Flushing
Building fire sprinkler line flushing may be a source of non-storm water runoff pollution. The water entering the system is usuall y potable water, though in some areas it may be non-potable reclaimed wastewater. There are subsequent factors that may drasticall y reduce the quality of the water in such systems. Black iron pipe is usuall y used since it is cheaper than potable piping, but it is subject to rusting and results in lower quality water. Initiall y, the black iron pipe has an oil coating to protect it from rustin g 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 bacteri a 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 disch arge 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.swrc b.ca.gov/nps/index .html Clark County Storm Water Pollution Control Manual
http: //www.co .clark.wa.us/pubworks/bmpman.pdf
King County Storm Water Pollution Control Manual http://dnr.metrokc.go v/wlr / dss /spcm.htm Mobile Cleaners Pilot Progra m: Final Report. 1997. Bay Area Stormwater Management Agencies Association (BASMAA). http: //www. basmaa.org / Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwat er 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 .stormwaterc enter. net / January 2003 California Stormwater BMP Handbook
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Parking/Storage Area Maintenance SC-43
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 storm water 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 emplo yees.
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 emplo yees 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.
January 2003 California Stormwater BMP Handbook
Industrial and Commercial
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Objectives
■ Cover
■ Contain
■ Educate
■ Reduce/Minimize
■ Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
✓
✓
✓
✓
✓
Stormwater
Quality
Association
1 of 4
SC-43 Parking/Storage Area Maintenance
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-litt er 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:
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Clean oily spots with absorbent materials .
Use a screen or filter fabric over inlet, then wash surfaces.
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January 2003
Parking/Storage Area Maintenance SC-43
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 properl y.
Inspection
■ Have designated personnel conduct inspections of parking facilities and stormwater conveyance systems associated with parking facilities on a regular basis . ■ Inspect cleaning equipmen t/swee pers 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 sweep ing 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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SC-43 Parking/Storage Area Maintenance
Requirements
Costs
Cleaning/sweeping costs can be quite large. Construction and maintenance of stormwater structural controls 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
Sllrjace Repair
Apply concrete, asphalt, and seal coat during dry weather to prevent contamination from contacting stormwater 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 Non point 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/bmpman .pdf
King County Storm Water Pollution Control Manual http://dnr .metrokc.gov/wlr/dss/spcm.htm Pollution from Surface Cleaning Folder. 1996. Bay Area Storm water Management Agencies Association (BASMAA). http://www.basmaa.org/
Oregon Association of Clean Water Agencies. Oregon Municipal Storm water 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/ 4 of 4 California Stormwater BMP Handbook
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Drainage System Maintenance SC-44
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 vvith 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).
January 2003 California Stormwater BMP Handbook
Industrial and Commercial
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Objectives
■ Cover
■ Contain
■ Educate
■ Reduce/Minimize
Targeted Constituents
Sediment ✓
Nutrients
T~h ✓
Metals
Bacteria ✓
Oil and Grease
Organics
Stormwater
Quality
Association
1 of 6
SC-44 Drainage System Maintenance
■ 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 properl y 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 refr esher 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:
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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.
Purchas e of landfill space to dispose of illegally-dumped items and material.
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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 Flllshing
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 storm water 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 hydra nts 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/bmpman.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 Municipal Stormwater Toolbox for Maintenance Practices. June 1998.
Santa Clara Valley Urban Runoff Pollution Prevention Program http://vvww.scvurppp.org The Storm Water Managers Resource Center http://www.stormwatercenter.net United States Environmental Protection Agency (USEPA). 2002. Pollution Prevention/Good Housekeeping for Municipal Operations Storm Drain System Cleaning. On line:
http://www.epa.gov/npdes/menuotbmps/poll 16.htm
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Site Design & Landscape Planning SD-10
Description
Design Objectives
0 Maximize Infiltration
0 Provide Retention
0 Slow Runoff
0 Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
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 area s 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 plannin g should conform to applicable standards and specifications of agencies with jurisdiction and be consistent with applicable General Plan and Local Area Plan policies.
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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 Nat11ral 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 2 of 4 California Stormwater BMP Handbook
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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 storm water 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 .
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SD-10 Site Design & Landscape Planning
Redevelopment may present significant opp01tunity 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 Count y, 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.
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Roof Runoff Controls
Rain Garden
Description
Various roof runoff controls are available to address stormwater SD-11
Design Objectives
0 Maximize Infiltration
0 Provide Retention
0 Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
0 Contain Pollutants
Collect and Convey
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 an d atmospheric deposition. Roof runoff controls consist of directin g the roof runoff away from paved areas and mitigating flow to the storm drain system throu gh 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 individu al lots for single-family hom es as well as lots for higher density residential and commercial structures should consider site design provisions for containing and infiltrating roof runoff or directin g roof runoff to vegetative swales or buffer areas. Retained water can be reused for watering garde ns, lawns, and trees. Benefits to the environment include reduced dem and for potable water used for irrigation , improved stormwa ter quality, increased groundwa ter recharge, decreased runoff volume and peak flows, and decreased flooding potential.
Suitable Applications
Appropriate applications include residential, commercia l and indu strial 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 permanentl y open outlet. Roof runoff is temporaril y stored and then released for irrigation or infiltration between storms. The number of rain January 2003 California Stormwater BMP Handbook
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SD-11 Roof Runoff Controls
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 storm water 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 meterin g 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. 2 of 3 California Stormwater BMP Handbook
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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 appl y 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 January 2003 California Stormwater BMP Handbook
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Efficient Irrigation SD-12
Design Objectives
0 Maximize Infiltration
0 Provide Retention
0 Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Description
Contain Pollutants
Collect and Convey
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.
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SD-12 Efficient Irrigation
■ 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 Februar y 2003.
Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002.
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Storm Drain Signage
Description
SD-13
Design Objectives
Maximize Infiltration
Provide Retention
Slow Runoff
Minimize Impervious Land
Coverage
0 Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
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 are a with prohibiti ve language. Examples include "NO DUMPING January 2003 California Stormwater BMP Handbook
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SD-13 Storm Drain Signage
- DRAJNS 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 storm water 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, Februmy 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.
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Trash Storage Areas
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
SD-32
Design Objectives
Maximize Infiltration
Provide Retention
Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
0 Contain Pollutants
Collect and Convey
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.
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SD-32 Trash Storage Areas
■ 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 storm water 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 appl y 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 .
2 of 2 California Stormwater BMP Handbook
New Development and Redevelopment
www .cabmphandbooks .com
January 2003
Treatment Control BMPs
DESIGN INFORMATION
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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
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 Table of Contents
Commercial Trash Enclosures
Hazardous Waste 2
Working Outdoors & Handling Spills 4
Commercial Landscape 5
Sidewalk, Plaza, Entry Monument & Fountain Maintenance 6 Equipment Maintenance & Repair 10
Pool Maintenance 14
Paint 16
Vehicle Maintenance 17
Pet Waste Disposal 18
Get In Touch With Us Online 19
COMMERCIAL TRASH ENCLOSURES
FOLLOW THESE REQUIREMENTS
TO KEEP OUR WATERWAYS CLEAN
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.
P.ROTECli WATER Ql!J~l!I™ B~ F.Ol!l!OWING iliHESE SIMP.l!E STEP.S
PIT TRASH INSIDE
Place trash inside the bin
(preferably in sealed bags)
CtOSE THE LID
Prevent rain from entering
the bin in order to avoid
leakage of polluted water
runoff
• Paint
• Grease, fats and used oils
• Batteries, electronics
and fluorescent lights
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 lea ks
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 wit h trash and garbage.
Check with your local City/County
for Building Codes.
HAZARDOUS WASTE
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.
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
Automobile motor oil
Anti-freeze
Contaminated oil
Car batteries
Corrosive liquids, solids
Flammable solids, liquids
Latex Paint
Mercury
NiCad/Alkaline Batteries
Oil Base Paints
Oil Filters
Oxidizers
PCB Ballasts
Pesticides (most)
Photofi xer, developer
Television & Monitors
Additional Handling
$1 .29/ lb.
$.73/gal.
$1.57/gal.
$4.48/gal.
$.62/ea.
$2.80/lb.
$1 .57/lb .
$.73/lb.
$10.08/ lb.
$2.13/ lb.
$1 .00/ lb.
$.56/ea.
$9.63/ lb.
$5.94/ lb.
$2.91 / lb.
$4.31/gal.
$11.20/ea.
$138.00/ hr.
*Rates subject to change without notice *
WE CANNOT ACCEPT
* Radioactives
* Water reactive s
* Explosives
* Compressed gas cylinders
* Medical or biohazardous waste
* Asbestos
* Remediation wastes
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 w ith 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: jschwab @sbcfire.org
WORKING OUTDOORS & HANDLING SPILLS
WHEN WORKING OUTDOORS
USE THE 3Cs
CUANDO TRABAJE AL AIRE LIBRE UTILICE LAS 3Cs
CONTROL I CONTROL
Locate the nearest storm drain and ensure nothing
can enter or be discharged into it.
Ubique el desague de aguas pluviales mas cercano y
asegurese de que nada pueda ingresar a este ni
descargarse en el.
CONTAIN I CONTENER
Isolate your area to prevent material from potentially
flowing or being blown away.
Afsle su area para evitar que el material pueda discurrirse o ser 1/evado par el viento.
CAPTUREICAPTURAR
..
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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 las restos y col6quelos en la basura. Lim pie las derrames con un material absorbente (coma la arena
para gatos) o aspfrelos con una Wet-Vac (aspiradora de
humedad) y desechelos correctamente.
DISCHARGE TO THE STORM DRAIN, ACCIDENTAL OR NOT, COULD
LEAD TO ENFORCEMENT ACTIONS, WHICH COULD INCLUDE FINES.
Follow the best practices below to prevent water pollution from landscaping activities. 0 0
0 RECYCLE
YARD WASTE
Recycle leaves, grass clippings and other
yard waste.
Do not blow, sweep, rake or hose yard
waste into the street or catch basin.
Try grasscycling: the natural recycling of
grass by leaving clippings on the lawn
when mowing.
For more information, please visit:
www.calrecycle.ca.gov/ organics
/grasscycling
HOMEOWNERS
KEEP TH ESE TIPS IN MIND WHEN
HIRING PROFESSIONAL LANDSCAPERS
AND REMIND AS NECESSARY.
USE FERTILIZERS, HERBICIDES
AND PESTICIDES SAFELY
0 0
Fertilizers, herbicides and pesticides are
often carried into the storm drain system
by sprinkler runoff. Use natural and
non-toxic alternatives as often as possible.
If you must use chemical fertilizers,
herbicides or pesticides:
• Spot apply, rather than blanketing entire
areas.
• Avoid applying near curbs and
driveways, and never before a rain.
• Apply fertilizers as needed: when plants
could best use it and when the potential
runoff would be low.
• Follow the manufacturer's instructions
carefully- this will not only give the best
results, but will save money.
0 0
0 USE WATER
WISELY
Control the amount of water and direction
of sprinklers. Sprinklers should only be on
long enough to allow water to soak into
the ground, but not so long as to cause
runoff.
Periodically inspect, fix leaks and realign
sprinkler heads.
Plant native vegetation to reduce the need
of water, fertilizers, herbicides and
pesticides.
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.
Sidewalks, Plazas
✓ 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.
SIDEWALK, PLAZA, ENTRY MONUMENT &
FOUNTAIN MAINTENANCE
Parking Areas, Driveways,
Drive-thru
✓ 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.
Building Surfaces, Decks, ✓ Use high-pressure water, no soap. etc., without loose paint
Unpainted Building
Surfaces, Wood Decks, etc.
2. Graffiti Cleaning
Graffiti Removal
✓ 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. ✓ 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.
SIDEWALK, PLAZA, ENTRY MONUMENT &
FOUNTAIN MAINTENANCE
3. Sidewalk Repair
Surface Removal
and Repair
Concrete Installation
and Repair
✓ 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).
✓ 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)
SIDEWALK, PLAZA, ENTRY MONUMENT &
FOUNTAIN MAINTENANCE
4. Litter Control
5. 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.
✓ 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.
✓ 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.
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.
EQUIPMENT MAINTENANCE & REPAIR
MODEL PROCEDURES:
1. General Maintenance and Repair
General Guidelines
➔ Note: Permission must
be obtained for any
discharge of wash
water to the sanitary
sewer from the local
sewering agency .
Good Housekeeping
2. Vehicle Repair
General Guidelines
✓ 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. ✓ 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.
EQUIPMENT MAINTENANCE & REPAIR
Vehicle Leak and
Spill Control
3. Machine 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 prompt_ly and dispose of properly.
✓ Place a stockpile of spill cleanup materials where it will be readily accessible. ✓ Sweep floor using dry absorbent material.
✓ 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
Waste Reduction ✓ 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.
EQUIPMENT MAINTENANCE & REPAIR
Recycling
LIMITATIONS:
✓ 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:
OPTIONAL:
-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.
• 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.
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.
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 • Remove 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 • Settle, dispose of solids in trash and discharge water to the sewer, never to the storm drain For Residents
The following is a preview of the information we
have available to residents. For more fact sheets,
visit sbcountystormwater .org
Household Hazardous Waste Center Locations
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.
SERVICE AREA LOCATION
Big Bear Lake
{does not
acceptE · 42040 Garstin Dr. (cross: Big Bear Blvd.)
waste)
Chino 5050 Schaefer Ave. (cross: 4th St.)
Fontana !Fontana residents on1y1 Note: Provide a trash bill and a 16454 Orange Way (cross: Cypress Ave.) dlivers license as proof of residency.
Ontario 1430 S. Cucamonga Ave. (cross : Belmont St.)
Rancho Cucamonga 8794 Lion Street. (Off 9th St, between Vineyard and Hellman) Redlands 500 Kansas St. (cross: Park Ave.)
Rialto (does not accept E•waste) 246 Willow Ave. (cross: Rialto Ave.) San Bernardino 2824 East ·w St., 302 (cross : Victoria Ave.) Upland 1370 N. Benson Ave. (cross: 14th St.)
To report Illegal dumping, call (877) WASTE18
or visit sbcountystormwater .org
Artwmk Court esy of the City of Los Angeles Storm water Program . Printed on recy cled paper.
DAYS OPEN HOURS
Saturdays 9 a.m. - 2 p.m.
2"' & 4rn Sat. 8 a.m. - 1 p.m.
Saturdays 8 a.m. - 12 p.m.
Fri. & Sat. 9 a.m. - 2 p.m.
Saturdays 8 a.m. - 12 p.m.
Saturdays 9:30 a.m. - 12:30 p.rn.
2"' &4rn Fri. & Sat. 8 a.m. - 12 p.m.
Mon. - Fri. 9 a.m. - 4 p .m.
Saturdays 9 a .m. - 2 p.m.
TAKE ONE
When painting your home,
protect your family and community.
• PAI INTS that are water-based are less toxic and should be used whenever possible.
• BRUSHES with water-based paint should be washed
in the sink. Those with oil-based paint should be
cleaned with paint thinner.
• 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 cnarge. For a list of acceptable materials, locatioril informatioril, and hours of operation call 1-800-OILY CAT.
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) WASTEl 8 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
PET WASTE DISPOSAL
FREE
IE WASTE BAG
Remember to pick up after your pet every time
to keep San Bernardino County clean and healthy!
Get In Touch With Us Online!
1@11
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■ Automotive services
Oil, grease, anti-freeze and other toxic automotive t1uids often make their way iuto the San Bernardino County stmm drain system , mid do not get treated before reaching the Sm1ta Ana River. This pollutes om drinking water and contaminates waterways, making them unsafe for people and wildlife. Follow these best management practices to prevent pollution , protect public health and avoid frnes or legal action. • Storing Hazardous Waste: Keep your liquid waste segregated . Many fluids can be recycled via hazardous waste disposal companies if they are not
1.ni.xed. Store all materials under cover with spill containment or inside to prevent contamination of rainwater nmoff.
• Proper Disposal of Hazardous Waste : Recycle used motor oil and oil filters, anti-freeze and other hazardous automotive fluids ,
batteries . tires and metal filings collected from
grinding/polishing auto pmis. Contact a licensed
hazardous waste hauler. For more recycling
infonnation. call (909) 386-8401.
• Cleaning Auto Parts: Scrape pans with a wire brush or use a bake oven rather than liquid cleaners . Anange
drip pans , drying racks and drain boards so that fluids are directed back into the sink or the fluid holding tllilk. Do not wash pmts or equipment in a parking lot, driveway or street.
• Preventing Leaks and Spills: Place chi.p pans underneath to capture fluids. Use absorbent cleaning agents instead of water to clean work areas . • Metal Grinding & Polishing: Keep a bin under your lathe or g1.i.nder to capture metal filings . Send uncontaminated filings to a scrap metal recycler for reclamation. Store metal filings in a covered container or indoors. • Cleaning Spills: Follow your hazm·clous mate1.i.als response plm1, as filed with yom local fire depmiment or other hazardous materials authority . Be sure that all employees are aware of the plan and are capable of in1plementing each phase of the plan . Use diy methods for spill cleanup (sweeping, absorbent mate1i.als, etc.).
To repmt serious spills , call 911.
• Washing vehicles: Wash vehicles where the wash water can soak into g1.·ass. g1.·avel or be clive1ied to nemby lllildscaping. away from the street and stonn di·ains. Wash vehicles at a desigJ.1ated wash rack that is connected to the sanitary sewer or take vehicles to a professional car wash . Use soaps , cleaners and detergent s that are labeled phosphate free or biodeg1.·adable. Tue safest product s for the environn1ent are vegetable based or citm s-based soaps.
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
■ Carpet cleaning:
Toxic chemicals and discharged waste water from carpet, drape1y, furniture and window cleaning often make their way into the San Bernardino County stonn drain system and do not get treated before reaching the Santa Ana River. This pollutes our drinking water and contaminates local wate1ways, making them unsafe for people and wildlife. Following these best management practices will prevent pollution , comply with regulations and protect public health.
These guidelines apply even if the cleaning products are labeled "nontoxic" or "biodegradable ". Although these products may be less harmful to the enviromnent , they can still have hannful effects if they enter the storm drain untreated. • Dispose of wastewater properly: Wastewater from cleaning equipment must be discharged into a sink, toilet, or other drain connected to the sanitmy sewer system within sanitary sewer discharge limits, or hauled off and disposed of properly . Wastewater should never be discharged into a street, gutter, parking lot or stonn drain.
• Filter wastewater: Carpet cleaning wastewater should be filtered before discharging it to the sanitmy sewer since fibers and other debris in the wastewater can clog pipes. The filtered material can be disposed of in the garbage, as long as the waste is not contaminated with hazardous pollutants .
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
■ Commercial landscape maintenance:
Yard waste, sediments and toxic lawn and garden chemicals used in collllllercial landscape maintenance often make their way into the San Bernardino County sto1m drain system and do not get treated before reaching the Santa Ana River. This pollutes our drinking water and contaminates local wate1ways, making them unsafe for people and wildlife. Follow these best management practices to prevent pollution, protect public health and avoid fines or legal action.
• Recycle Yard Waste: Recycle leaves, grass clippings and other yard waste. Do not blow, sweep, rake or hose yard waste into the street. Let your customers know about grass cycling --the natural recycling of grass by leaving clippings on the lawn when mowing instead of using a grass catcher. Grass clippings will quickly decompose, returning valuable nutrients to the soil. You can get more information at \V\V\V.ci,vmb.ca.Qov/Onrnnics.
• Use Fertilizers, Herbicides & Pesticides Safely : Fe1tilizers, herbicides and pesticides are often canied into the stonn drain system by sp1inkler nmoff. Use natural, non-toxic alternatives to traditional garden chemicals. If you must use chemical fertilizers, herbicides , or pesticides spot apply rather than blanketing entire areas, avoid applying near curbs and driveways and never apply before a ram.
• Recycle Hazardous Waste: Pesticides. fe1tilizers, herbicides and motor oil contaminate landfills and should be disposed of through a Hazardous Waste Facility. For infonnation on proper disposal. call (909) 386-8401. • Use Water Wisely: Conserve water and prevent nmoff by controlling the amount of water and direction of sprinklers. Sp1inklers should be on long enough to allow water to soak into the ground but not so long as to cause runoff. Pe1iodically inspect, fLx leaks and realign sp1inkler heads .
• Planting: Plant native vegetation to reduce the need of wate r, fertilizers, herbicides and pesticides .
• Prevent Erosion: Erosion washes sediments , deb1is and toxic nmoff into the storm drain system, polluting wate1ways. Prevent erosion and sedin1ent nmoffby using ground cover. berms and vegetation down-slope to capn1re rnnoff. A.void excavation or grading during wet weather. • Store Materials Safely: Keep landscaping mate1ials and deb1is away from the street, gutter and storm drains. On site stoc1..--piles of materials should be covered with plastic sheeting to protect from rain. wind and nmoff.
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
■ Construction & development:
Soil, cement wash, asphalt, oil and other hazardous debris from construction sites often make their way into the San Bernardino County st01m drain system, and flow untTeated into local wateiways . Follow these best management practices to prevent pollution . protect public health and avoid fines or legal action.
• Store Materials Safely: Keep constmction materials and debris away from the street, gutter and storm drains . Cover exposed stockpiles of soil, sand or gravel and excavated material with plastic sheeting, protected from rain, wind and runoff.
• Preventing Erosion: Avoid excavation or grading during wet weather.
Plant tempormy vegetation or add hydro mulch on slopes where construction is not immediately planned, and pe1manent vegetation once excavation and grading are complete. Construct diversion dikes to challllel nmoff to a detention basin and armmd the construction site. Use gravel approaches where truck tTaffic is frequent to reduce soil compaction and limit the tracking of sedin1ent into the streets. For more infonnation on erosion control , call (909) 799-7407.
• Cleaning & Preventing Spills: Use a dtip pan and funnel when draining or poming fluids. Sweep up chy spills, instead of hosing. Be ready for spills by preparing and using spill containment and cleanup kits that include safety equipment and dty cleanup matetials such as kitty litter or sawdust. To rep01t serious spills, call 911.
• Maintaining Vehicles & Equipment: Maintain and refuel vehicles and equipment at a single location on-site, away from the street, gutter and storm drains. Perfo1m major equipment repairs and 'vvashings off-site. Inspect vehicles and equipment frequently for leaks. and prevent leaks from stored vehicles by dt·aining gas. liych-aulic oil, transmission , and brake and radiator fluids. • Ordering Materials & Recycling Waste: Reduce waste by ordering only the amounts of mate1ials needed for the job . Use recycled or recyclable mate1ials whenever possible. You can recycle broken asphalt, concrete , wood. and cleared vegetation. Dispose of hazardou s mate1ials through a hazm·clous waste hauler or other meam; in accordance with the constmction pen.nit. Non-recyclable mate1ials should be taken to a landfill or disposed of as hazardous waste . For recycling and disposal inf01mation, call (909) 3 86-840 l .
• Concrete and mortar application: Never dispose of cement washout into dt·iveways, streets. gutters or dt·ainage ditches. Wash concrete mixers and equipment only in specified washout areas, where the water flows into lined containment ponds. Cement wash water can be recycled by pumping it back into cement mixers for reuse .
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
■ Food & Restaurants:
Food waste, grease cleaning fluids, mop water and trash from restaurant operations often make their way into the San Bernardino County stonn drain system, and do not get treated before reaching the Santa Ana River. This pollutes om drinking water and coutaminates waterways , making them unsafe for people and wildlife. Follow these best management practices to prevent pollution, protect public health and avoid fiues or legal action .
• Cleaning & Maintenance: Clean equipmem, floor mars, filters and garbage cans in a mop sink, wash rack or floor drain connected to the sewer through a grease trap.
Don't wash them or pom wash water in a parking lot, alley, sidewalk or street.
Sweep outside areas and put the debris in the garbage, instead of sweepiug or hosing it into the parking lot or street.
• Recycle oil & grease: Oil and grease wastes can be recycled . Look iu the yellow pages for rendering companies , or call (909) 386-8401 for disposal infonnation.
Don't pour oil or grease into sinks, floor drains or onto a parking lot or street.
Keep grease bins covered and contained .
• Dumpster areas: Keep dumpster lids closed aud the areas around them clean. Do not fill with liquid waste or hose them out. Call your trash hauler to replace any dumpsters that are damaged or leak. Do not wash down or steam clean trash
enclosure area or trash bin unless you collect the water and dispose of it into the sanitruy sewer. Hire a mobile pressure wash business that is familiru· with the stonn water regulations to clean these areas and make sure they provide yon with a record of proper wastewater disposal.
• Managing spills: Use d1y methods for spill cleanup , sweeping and using cat litter instead of hosing. Have spill contai111llent and cleanup kits available for possible spills on your prope1ty.
To repott serious toxic spills. call (800) 33-TOXIC.
• Handling toxic chemicals: Dispose of all unwanted toxics materials like cleaners, solvents and detergents through a hazru·dous waste hauler. These items are not trash. Use non toxic cleaning products whenever possible . For infonnation on hazru·dous waste pich."11p. call (909) 386-8401.
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
■ General industrial & manufacturing businesses:
If you own, manage or help operate a business , especially an industrial or manufachiring company , you can help reduce stonn water pollution. From envirol1ll1entally friendly cleaning and maintenance activities, to recycling hazardous waste materials , businesses can do a lot to prevent stonn water pollution .
• Review your cleaning and maintenance activities to look for ways to reduce runoff into the sto1111 drain system, especially in outdoor areas like parking lots, loading docks and maintenance yards. Keep trash enclosure swept and trash bin lids closed.
• Train employees to wash vehicles and equipment indoors in a wash rack that is connected to the sanita1y sewer or off-site at a commercial wash facility . Train janitorial staff to dispose of floor cleaning water in the sewer and not into the parking lot. Iv!ake sure that cooling towers , boilers , compressors , water softeners and other process equipment are com1ected to the sanita1y sewer and do not discharge wastewater into the parking lot.
• If you use hazardous materials in your eve1yday business , like ink and solvents for collllllercial p1inting, or polishes and chemicals for car detailing or manufachuing after-market accessories , do not put these hazardous materials in the trash or pour them into the gutter. Take them to be recycled safely. Store chemicals , wastes , raw materials and contaminated equipment indoors or in a covered , spill contained area, to prevent exposure of these materials to storm water. For info1111ation on proper hazardous waste disposal , call (909)386-8401. • Take advantage of less-toxic alternatives to dangerous chemicals. From detergents to ch-ain openers , there are a lot of ways to get the same or better result without having to rely toxic substances.
• Looking for raw materials? San Bernardino County Materials Exchange Program , or SBCoMax is a pa1tnership between the County and the California Integrated Waste Management Board , for businesses to provide used but usable materials to those interested in obtaining them. The program helps divert used materials from landfills , saves resources and can save you money.
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
■ Mobile vehicle maintenance
Wash in a designated area that has been benned up to contain the wash water.
Common water control devices are: recycling systems; pretreatment or sewer discharge systems; limited recycling systems; wash pits(pmiable vinyl wash pads), vacuum sludge filtering systems; wet-dry vacuums, sump pumps; drain covers; portable dams; vacu brooms; oil absorbent pads, booms, pillows, and tubes; plastic sheeting; filter h1bs; buckets; pans; and squeegees.
When cleaning engines using chemical additives like soaps, solvents or degreasers, the cleaning must be performed at a facility that has the equipment to properly process the contaminated wastewater nmoff, or using a leak-proof ground cover device that will catch and contain all contaminated wastewater rnnoff for later disposal in a manner that complies with city, county, state and federal codes.
Wastewater from cleaning equipment must be discharged into a sink, toilet, or other drain connected to the sanitary sewer
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
■ Regulatory information
The Federal Water Pollution Control Act prohibits the discharge of any pollutant to navigable waters from a point source unless the discharge is authorized by a National Pollutant Discharge Elimination System (NPDES) permit. The 1987 passage of the Water Quality Act established NPDES permit requirements for discharges of storm water. The NPDES permit program controls water pollution by regulating point sources that discharge pollutants into waters of the United States.
Industrial facilities and constrnction sites are regulated by the Regional Water Quality Control Board and State Water Resources Control Board, through general storn1 water permits. Most industrial, manufachuing or transportation businesses that store materials, products or equipment outdoors, or conduct vehicle washing or process operations outdoors are required to obtain coverage under the State Water Resources Control Board' s General Industrial Activities Stonnwater Permit. For more infonnation about this pern1it, visit \:\T\V\N.swrcb.ca.gov/storn1wtr/industrial.ht111l or contact your local storm water coordinator.
If your business conducts construction activities, including clearing, grading, stockpiling or excavation that results in soil disturbances of at least one acre, you are subject to the State Water Resources Control Board's General Constrnction Activities Stonnwater Pennit. To find out more about this stonn water permit for construction, visit:
vV\1/\1/.swrcb.ca.gov/stonnwtr/constrnction.html.
Cities and counties are regulated through pennit s issued by the Regional Boards. Since 1990, operators oflarge storm ch-ain systems such as San Bernardino County's have been required to:
• Develop a storm water management program designed to prevent harmful pollutants from being dumped or washed by storm water runoff, into the storm water system, then discharged into local water bodies; and
• Obtain a National Pollutant Discharge Elimination System (NPDES) permit.
The NPDES permit programs in California are administered by the State Water Resources Control Board and by nine regional boards that issue NPDES permits and enforce regulations within their respective region.
San Bernardino County lies within the jurisdiction of the Santa Ana Region. This regional board issues a pennit to the San Bernardino Cmmty Pennittees , which includes the Cmmty of San Bernardino, San Bernardino County Flood Control District and incorporated cities of San Bernardino County. Since the program's inception, the County of San Bernardino has served as the principal pennittee .
Documents & reports:
The following documents describe the regulations and programs for water quality in San Bernardino County. You can review the latest Basin Plan, National Pollutant Discharge Elimination System (NPDES) Pe1mit and Drainage Area Management Plan (DA.NIP). • Basin Plans: The document for each region of the State Water Quality Board's jurisdiction, including Santa Ana, is the Water Quality Control Plan, commonly referred to as the Basin Plan. It is the foundation for the regulatory programs of each regional board. The Basin Plan documents the beneficial uses of the region's ground and surface waters, existing water quality conditions, problems, and goals, and actions by the regional board and others that are necessary to achieve and maintain water quality standards.
► Water Control Plan for the Santa Ana River Basin
• Municipal National Pollutant Discharge Elimination System (NPDES) Permits: The permits of each region outline additional steps for a storm water management program and specify requirements to help protect the beneficial uses of the receiving waters. They require permittees to develop and implement Best Management Practices (BMPs) to control/reduce the discharge of pollutants to waters of the United States to the maximum extent practicable (MEP).
► Santa Ana Regional Water Quality Control Board Municipal NPDES Permit Order No. RS-2002-0012
• Report of Waste Discharge: The Report of Waste Discharge (ROWD) describes the San Bernardino Stormwater Program, implemented by the County and cities to comply with their jointly held stormwater permit. It is the principle policy and guidance document for the NPDES Stormwater Program.
► Report of Waste Discharge 2000
• San Bernardino County Storm Water Program Annual Status Report: The Annual Status Report is a requirement of the NPDES permit for submittal to the Regional Boards and United States Environmental Protection Agency. The report presents an analysis and assessment of permit compliance activities.
► Annual repo1t - will be posted soon
For more information about how you can prevent stormwater pollution:
www.sbcountystormwater.org
MOBILE VEHICLE CLEANING & MAINTENANCE
These best management practices will help you prevent polluted water and other materials from flowing into the street, gutter and storm drain. 0 When washing items contaminated by hazardous materials, wash water should be collected and hauled off-site for proper disposal.
O Wash in customers wash bay or pump wastewater to the wash bays' pretreatment system.
Engine cleaning must be performed at a facility that has the equipment to properly process the contaminated wash water runoff.
Stop the source
of the spill
immediately.
Locate the nearest
storm drain and
ensure nothing
ca n enter or be
discharged into it.
O If a spill occurs, use an absorbent material such as kitty litter or absorbent pads.
0 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. 0 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.
Prevent potential waste spills from
coming into contact with our waterways:
WHEN DELIVERING
.J Site Portable Toilets at least 50 feet away from a
catch basin or waterway.
.J In high wind areas, secure the Portable Toilets by
anchoring the unit securely to the ground.
.J Equip Portable Toilets with a containment tray to
prevent accidental overflow.
When t here 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.
WHEN SERVICING
.J 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 .
.J 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 .
.J Upon completion of the cleani ng process, pump the
captured water into the service vehicle.
Impida que Los derrames potenciales de desechos
entren en contacto con nuestras vias fluviales:
AL MOMENTO DE LA ENTREGA
✓ Coloque los Banos Portatiles a una distancia minima de 50 pies de un sumidero o via fluvial.
✓ En areas de vientos fuertes, proteja los Banos Portatiles anclando la unidad en forma segura al suelo.
✓ Coloque la bandeja de contencion abajo del Bario
Portatil.
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.
CUANDO SE REALIZE EL MANTENIMIENTO
✓ En el vehiculo de servicio:
• Mantenga en condiciones 6ptimas todas las mangueras acoples, tanques y equipo a fin de prevenir derrames.
• Almacene y maneje en forma apropiada los contaminantes potenciales (desechos del Bario Portatil, 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 Banos Portatiles, asegurese de que la bandeja de contenci6n capture toda el agua residual, para impedir que esta llegue a la calle, alcantarilla o sumidero.
✓ Al completar el proceso de limpieza, bombee el agua capturada en el vehiculo de servicio.
GAS STATIONS
AN ILLEGAL DISCHARGE INTO THE STORM DRAIN, ACCIDENTAL OR NOT, CAN LEAD TO ENFORCEMENT ACTIONS, WHICH CAN INCLUDE FINES.
These best management practices will help you prevent polluted water and other materials from flowing into the street, gutter and storm drain.
WHEN CLEANING, USE DRY CLEAN-UP METHODS:
SWEEP TO REMOVE
LITTER AND DEBRIS
When pressure washing, ensure
wash water does not leave the
site or enter the storm drain by
placing a capture device on or
around the storm drain. Clean out
the capture device and properly
dispose of the wastes. To avoid
fines, be sure to advise your
pressure washers to comply with
operating procedures for proper
collection and disposal of wash
water.
USE RAGS AND ABSORBENTS
FOR LEAKS AND SPILLS
SPILL CLEAN-UP
./ Stop the source of the spill immediately. Be
aware of the nearest storm drain location and
ensure nothing can enter or be discharged into it.
./ Contain the spill. Spill kit location must be
properly marked and easily accessible. Train your
personnel.
./ Clean up the excess. Applied absorbent materials
must be collected for re-use or proper disposal.
Keep hazardous materials out of the trash by
disposing of them properly, this includes absorbent
materials used to clean up toxic waste spills.
Hazardous materials may include used motor oil
and oil filters, antifreeze, batteries and
gasoline. Keep containers with hazardous waste
stored under a cover and on secondary
containment.
PLACE CLEAN UP MATERIALS
IN THE TRASH OR
DISPOSE OF PROPERLY
TRASH AREAS
./ Place trash inside the bin (preferably in sealed
bags) .
./ Prevent rainwater from entering trash bins by
keeping lids closed at all times or by placing the
bins under a solid roof.
Pollutants from gas stations may make their
way into the storm drain system. This
pollutes our drinking water and contaminates
waterways, making them unsafe for people and
wildlife. Follow these best management
practices to comply with regulations, prevent
pollution and protect public health.
For more information about BMPs for
gasoline services, visit
cabmphandbooks.com.