A07.6_Attachment_F_TEMPORARY_STORM_WATER_POLLUTION_CONTROL.pdf

ATTACHMENT F

Section 01 57 23.02

TEMPORARY STORM WATER POLLUTION CONTROL RISK LEVEL 2

SECTION 01 57 23

TEMPORARY STORM WATER POLLUTION CONTROL Risk Level 2 07/13

PART 1 GENERAL

1.1 SUMMARY

The work consists of implementing the storm water pollution prevention measures to prevent sediment from entering streams or water bodies as specified in this Section in conformance with the requirements of the National Pollutant Discharge Elimination System (NPDES).

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D 3977 (1997; R 2007) Standard Test Methods for

Determining Sediment Concentration in Water Samples

CALIFORNIA STATE WATER RESOURCES CONTROL BOARD (CSWRCB)

CSWRCB CGP (2012) National Pollutant Discharge

Elimination System General Permit for Storm Water Discharges Associated with Construction and Land Disturbance Activities.

Construction General Permit (CGP) Order No.

2009-0009-DWQ as amended by 2012-0006-DWQ, NPDES No. CAS000002.

SMARTS California State Water Resource Control

Board's Storm Water Multi-Application and Report Tracking System (SMARTS).

CALIFORNIA STORMWATER QUALITY ASSOCIATION (CASQA)

CASQA CABMPHB (2011) California Stormwater Best Management

Practice Handbook for Construction

STANDARD METHODS (SM)

SM 2130 (2001) Turbidity

U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA)

EPA Method 160.2 (1999) Residue, Non-Filterable (Gravimetric, Dried at 103-105°C)

EPA Method 160.5 (1983) Settleable Matter (Volumetric, Imhoff

Cone)

EPA Method 180.1 (1993; R2) Determination Of Turbidity By

Nephelometry

NPDES (1972; R 2005) National Pollutant Discharge

Elimination System

SWPPP Storm Water Pollution Prevention Plan

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

40 CFR 136 Guidelines Establishing Test Procedures For

The Analysis Of Pollutants

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only or as otherwise designated. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.

Submit all submittals with sufficient lead-time to allow for government review and contractor revisions to ensure the project schedule is not delayed. Unless otherwise noted, the USACE will require a minimum of [21] calendar days to review documents. When necessary, enter submittals into the California State Water Resource Control Board's (CSWRCB) Storm Water Multi-Application and Report Tracking System (SMARTS).

Provide submittals in digital format to the USACE and electronically in SMARTS when necessary.

Preconstruction Submittals

SWPPP; G

A site-specific Storm Water Pollution Prevention Plan (SWPPP).

PRDs; G

Permit Registration Documents (PRDs) to obtain or update permit coverage.

Product Data

BMP Product Data

Manufacturer's installation instructions of Best Management

Practices (BMPs) to be used.

Test Reports

SWPPP Amendments

Amend the SWPPP as needed to reflect current site conditions.

Sampling Results

REAPs and Inspection Reports

Rain Event Action Plans (REAPs) and Inspection Reports

Exceedance Reports

Exceedance Reports for Numeric Action Level (NAL) exceedances.

Annual Report

Operation and Maintenance Data

Post-Construction Storm Water Management Plan; G

Operation and maintenance data to support the long-term maintenance plan designated for a minimum of five years.

Closeout Submittals

Final SWPPP; G

NOT Application; G

Notice of Termination (NOT) Application.

1.3 GENERAL REQUIREMENTS

Use this specification in conjunction with SECTION 32 92 33 GRASS SEEDING AND EROSION CONTROL that addresses the project's long-term BMPs.

Ensure all project activities are be in accordance with The National Pollutant Discharge Elimination System (NPDES) General Permit No. CAS000002 for Waste Discharge Requirements for Discharge of Storm Water Runoff Associated with Construction and Land Disturbance Activities, CSWRCB CGP, Order No. 2009-0009-DWQ as amended by 2012-0006-DWQ. Compliance to this permit and subsequent requirements/updates is mandatory. Any permit noncompliance constitutes a violation of the Clean Water Act and the Porter- Cologne Water Quality Control Act and is grounds for enforcement action and/or removal from General Permit coverage. CSWRCB CGP can be found at http://www.swrcb.ca.gov/water_issues/programs/stormwater/constpermits.shtml.

In accordance with the CGP's Legally Responsible Person (LRP) definition, the Contractor is the LRP for this project. As the project's LRP, obtain http://www.swrcb.ca.gov/water_issues/programs/stormwater/constpermits.shtml

CSWRCB CGP permit coverage and ensure full permit compliance throughout the life of the permit. Ensure all Permit Registration Documents (PRDs) and Notice of Termination (NOT) are electronically signed, certified, and submitted via the SMARTS to the CSWRCB. See the paragraph titled "Permit Registration Documents" for additional requirements. Pay all permit fees, and fines/penalties for violation or non-compliance with Federal, State and local laws and regulations.

The CSWRCB CGP does not preempt or supersede the authority of local storm water management agencies to prohibit, restrict, or control storm water discharges to municipal separate storm sewer systems (MS4) or other watercourses within their jurisdictions. Obtain and include the required local permits and/or agency's approval(s) in the SWPPP.

The CSWRCB CGP does not authorize discharges of fill or dredged material regulated by the U.S. Army Corps of Engineers under CWA § 404 and does not constitute a waiver of water quality certification under CWA § 401.

1.4.1 Required Stormwater Meetings

Conduct a required stormwater meeting within 30 days after contract award.

Conduct the meeting at the USACE Sacramento District Office. At a minimum, the Contractor's Project Manager, or appropriate technical person, the Qualified SWPPP Practitioner (QSP) and the Qualified SWPPP Developer (QSD) are required to be present. (See paragraph titled TRAINING REQUIREMENTS for position details.)

This meeting is the equivalent of a preparatory meeting for the SWPPP submittal. The QSD and QSP shall discuss the Contractor's proposed stormwater management plan for this project. This meeting is required prior to government approval of the SWPPP submittal.

Hold additional meetings for completion of the SWPPP or other required information as needed.

1.3.1 TRAINING REQUIREMENTS

This contract requires that all personnel responsible for the writing and implementation of the SWPPP be specifically trained in the subject of storm water permitting and erosion and sedimentation controls. Provide requirements for training based on the level of responsibility in the SWPPP.

Below are the requirements for the position(s) of the QSD and the QSP, which shall be in place for the entire duration of the project, until meeting the termination requirements as detailed in paragraph "Termination Of SWPPP And CSMP Responsibilities."

1.3.1.1 Qualified SWPPP Developer (QSD)

Ensure that SWPPPs are written, amended and certified by a QSD. A QSD shall have one of the following registrations or certifications, and appropriate experience, as required for:

a. A California registered professional civil engineer;

b. A California registered professional geologist or engineering geologist;

c. A California registered landscape architect;

d. A professional hydrologist registered through the American Institute of

Hydrology;

e. A Certified Professional in Erosion and Sediment Control (CPESC) (TM) registered through Enviro Cert International, Inc.;

f. A Certified Professional in Storm Water Quality (CPSWQ) (TM) registered through Enviro Cert International, Inc.; or

g. A professional in erosion and sediment control registered through the

National Institute for Certification in Engineering Technologies

(NICET);

The QSD shall be available throughout the life of the project to review and amend the SWPPP when necessary. Provide a copy of the QSD's certification within the SWPPP. Obtain the QSD Certification from the California Stormwater Quality Association (CASQA) or SMARTS.

The QSD shall be actively involved in the project throughout the life of the contract. The QSD shall inspect the site in person prior to SWPPP development to aid in the creation of the site specific SWPPP. The QSD shall regularly assess the SWPPP and amend it as needed during active construction periods. Verification of the QSD's inspections and SWPPP assessments shall be documented in the SWPPP. The QSD shall inspect the site in person prior to certification/submittal of the Notice of Termination

(NOT).

1.3.1.2 Qualified SWPPP Practitioner (QSP)

Ensure that all BMPs required by the CSWRCB CGP are implemented by a Qualified SWPPP Practitioner (QSP). A QSP is a person responsible for non-storm water and storm water visual observations, sampling and analysis. A QSP shall either be a QSD or have one of the following certifications:

a. A certified erosion, sediment and storm water inspector registered through Enviro Cert International, Inc.; or

b. A certified inspector of sediment and erosion control registered through Certified Inspector of Sediment and Erosion Control, Inc.

The QSP shall be available throughout the life of the project to address and implement the SWPPP when necessary. A copy of the QSP's certification shall be provided in the SWPPP. Obtain the Certification from the California Stormwater Quality Association (CASQA)or SMARTS to be valid.

The QSP shall be readily available and located within a reasonable distance from the project site in order to respond quickly to any stormwater related emergencies.

1.3.2 Additional Requirements

CSWRCB CGP establishes three levels of risk possible for a construction site. The Government has determined this project site's sediment and receiving water risk falls under Risk Level 2 requirements. The Contractor is responsible for meeting all Risk Level 2 requirements detailed in CSWRCB CGP to be in compliance. Attachment D of the CSWRCB CGP details additional Risk Level 2 requirements. When Risk Level 2 requirements conflict with requirements within this specification, the more stringent requirement shall be followed.

1.4 DEVELOPMENT AND DESIGN

1.4.1 SWPPP Development

The SWPPP is a requirement of the CSWRCB CGP permit and compliance is mandatory. Guidance for creating a SWPPP can be found at the California Stormwater Quality Association website https://www.casqa.org/resources/bmp-handbooks. Include a complete CSMP and an initial REAP. Once the SWPPP has been completed, submit it to USACE for government approval no later than 15 days upon receiving the NTP. Government approval will be based on the document meeting these specifications, and the CSWRCB CGP permit and CASQA CABMPHB requirements. Resubmit the SWPPP to the government until an acceptable action code is issued.

After government approval, submit the SWPPP to the CSWRCB's SMARTS, as detailed in the paragraph titled, "Permit Registration Documents."

Include a narrative section as well as figures in the Site Maps. At a minimum, include the locations of all BMPs (temporary and post-construction), discharge points, sampling collection points, drainage patterns across the project area, storm drain inlets and temporary concentrated flow drainage patterns in the Site Maps.

1.4.1.1 Construction Site Management Plan (CSMP)

Develop a written site-specific CSMP in accordance with the Risk Level 2 requirements in the CSWRCB CGP. Include all monitoring procedures and instructions, location maps, forms, and checklists as required to be in compliance. The CSMP shall be developed prior to the commencement of construction activities, and revised as necessary to reflect project revisions. The CSMP shall be a part of the SWPPP, included as an appendix or separate chapter.

Develop and Implement the CSMP to address the following objectives:

a. To demonstrate that the site is in compliance with the Discharge

Prohibitions and applicable Numeric Action Levels (NALs) of the CSWRCB

CGP;

b. To determine whether non-visible pollutants are present at the construction site and are causing or contributing to exceedance of water quality objectives;

c. To determine whether immediate corrective actions, additional BMP implementation, or SWPPP revisions are necessary to reduce pollutants in storm water discharges and authorized non-storm water discharges;

and

d. To determine whether BMPs included in the SWPPP are effective in preventing or reducing pollutants in storm water discharges and authorized non-storm water discharges.

Include a description of the following items:

1. Visual observation locations, visual observation procedures, and visual observation follow-up and tracking procedures;

2. Sampling locations, and sample collection and handling procedures.

Include detailed procedures for sample collection, storage, preservation, and shipping to the testing lab to assure that consistent quality control and quality assurance is maintained. Attach an example Chain of Custody form used when handling and shipping samples to the monitoring program; and

3. Identification of the analytical methods and related method detection limits (if applicable) for each required parameter.

1.4.1.2 Non-Visible Pollutants

Designate trained personnel to collect water quality samples. Document the personnel and training in the CSMP. Training shall consist of the following elements:

1. SWPPP and CSMP review,

2. Health and safety review, and

3. Sampling simulations.

The CSMP shall describe the following water quality sampling procedures:

a. Sampling preparation,

b. Collection,

c. Quality assurance and quality control,

d. Sample labeling,

e. Collection documentation,

f. Sample shipping,

g. Chain of custody,

h. Sample numbering, and

i. Precautions from the construction site health and safety plan.

For discharges into bodies of water listed as impaired due to sedimentation/siltation, samples will be analyzed for both settleable solids in accordance with the requirements of EPA Method 160.5, and total suspended solids in accordance with EPA Method 160.2; or for suspended sediment concentration in accordance with the requirements in ASTM D 3977.

Identify locations for sampling and analysis of storm water discharges to characterize discharges associated with construction activity from the entire project disturbed area and the reason for their selection. Show sampling locations shall on the Site Maps. The point of compliance for samples is at the project boundary. The sampling locations shall include:

a. Upstream/up-gradient from direct discharges from the construction site from a representative and accessible location as close as possible and upstream from the effluent discharge point;

b. Immediately downstream/down-gradient from the last point of direct discharge from the construction site from a representative and accessible location as close as possible and downstream from the effluent discharge point;

c. Immediately downhill from the locations where water flows onto into the water body.

This project has the potential to discharge non-visible pollutants in storm water from the construction site. Include a description of the sampling and analysis strategy and implement monitoring of non-visible pollutants in the

CSMP.

Identify potential non-visible pollutants that will be present on the construction site associated with the following:

a. Construction materials and wastes;

b. Existing contamination due to historical site usage; or

c. Application of soil amendments, including soil stabilization products, with the potential to alter pH or contribute toxic pollutants to storm water.

Show the locations planned for storage and use of the potential non-visible pollutants on the Site Maps.

Describe the schedule for collecting effluent samples from all discharge points where non-visible pollutants are discharged off-site in the CSMP.

The following list of conditions requires sampling when observed during inspections:

a. Materials or wastes containing potential non-visible pollutants are not stored under watertight conditions.

b. Materials or wastes containing potential non-visible pollutants are stored under watertight conditions, but:

1. A breach, leakage, malfunction, or spill is observed;

2. The leak or spill has not been cleaned up before precipitation; and

3. There is the potential for discharge of non-visible pollutants to surface waters or drainage system.

c. Construction activities; such as application of fertilizer, pesticide, herbicide, methyl methacrylate concrete sealant, or non-pigmented curing compound; have occurred during precipitation or within 24 hours preceding precipitation, and have the potential to discharge pollutants to surface waters or drainage system.

d. Soil amendments, including soil stabilization products, with the potential to alter pH levels or contribute toxic pollutants to storm water runoff have been applied, and have the potential to discharge pollutants to surface waters or drainage system (unless independent test data are available that demonstrate acceptable concentrations of non-visible pollutants in the soil amendment).

e. Storm water runoff from an area contaminated by historical usage of the site has the potential to discharge pollutants to surface waters or drainage system.

Identify water flow paths sampling locations for collecting downstream and control samples, and the reason for their selection. Select the control sampling location so the sample does not come into contact with materials, wastes or areas associated with potential non-visible pollutants or disturbed soil areas. Show non-visible pollutant sampling locations on the Site Maps. Identify the analytical method to be used for downhill and control samples for potential non-visible pollutants on the project.

Samples to be analyzed by a laboratory shall be sampled, preserved, and analyzed by a State-certified laboratory in conformance with the requirements in 40 CFR 136, "Guidelines Establishing Test Procedures for the Analysis of Pollutants." Identify the laboratory, sample containers, preservation requirements, holding times, and analysis method in the CSMP.

Ensure that the analyzing laboratories will receive samples within 48 hours of the physical sampling (unless otherwise required by the laboratory), and shall use only the sample containers provided by the laboratory to collect and store samples. Keep Water quality analytical results, and quality assurance and quality control data for a period of three years, and retained on-site while construction is ongoing. Also, provide an evaluation of whether the downhill or downstream samples show levels of the tested parameter higher than in the control sample. If downhill or downstream samples show increased levels, assess the water pollution control measures, site conditions, and surrounding influences to determine the probable cause for the increase. As determined by the assessment, repair or modify water pollution control measures to address increases and amend the SWPPP as necessary. Electronic results (in one of the following file formats: .xls, .txt) shall have the following information:

a. Sample identification number.

b. Contract number.

c. Constituent.

d. Reported value.

e. Analytical method.

f. Method detection limit.

g. Reported limit.

Maintain the water quality sampling documentation and analytical results with the SWPPP on the project site. If construction activities or knowledge of site conditions change such that discharges or sampling locations change, amend the CSMP as necessary.

1.4.1.3 Best Management Practices (BMPs)

The QSD shall select BMPs to include in the SWPPP in accordance with these specifications and the minimum Risk Level 2 BMPs defined in the CSWRCB CGP.

The selection and implementation of BMPs is based on the pollution risks associated with the construction activity. Include the BMP's installation and maintenance schedule and on-site location in the SWPPP. Installation, maintenance and inspection details are listed in the appropriate CASQA CABMPHB BMP fact sheet as defined in Part 2: paragraph 2.1, Required BMPs.

Include the following water pollution control practices in the SWPPP as needed for compliance with CSWRCB CGP:

Erosion Control Sediment Control Wind Erosion Control Tracking Control Non-Storm Water Management Waste Management and Materials Pollution Control Active Treatment System Plan (if needed)

Implement erosion control practices for all disturbed soil on the project site. Select a variety of erosion control measures to protect the soil surface and prevent soil particles from being detached by rainfall, flowing water, or wind. The minimum required erosion control BMPs to be implemented onsite are listed in paragraph 2.1.1, Erosion Control BMPs.

Implement sediment control BMPs to capture any soil that becomes eroded.

Implement these BMPs to divert flows from exposed soils, temporarily store flows, or otherwise limit runoff and the discharge of pollutants from exposed areas of the site. Establish effective perimeter controls; consider installing silt fences or placing straw wattles below slopes. The minimum required sediment control BMPs to be implemented onsite are listed in paragraph 2.1.2, Sediment Control BMPs.

Include the Wind Erosion Control BMP in the SWPPP, BMP details are listed in the appropriate CASQA CABMPHB BMP fact sheet as defined in paragraph 2.1.3 Wind Erosion Control.

Implement proper tracking control BMPs to reduce the tracking of sediments off-site. The minimum required tracking control BMPs to be implemented onsite are listed in paragraph 2.1.4, Tracking Control BMPs.

The discharge of materials other than storm water and authorized non-storm water discharges is prohibited. The minimum required Non-Stormwater control

BMPs and waste management and pollution control BMPs to be implemented onsite are listed in paragraph 2.1.5 Non-Stormwater Management BMPs, and paragraph 2.1.6, Waste Management and Materials Pollution Control BMPs, respectively.

Include the BMP fact sheets found at the CASQA website as an appendix of the SWPPP. Include BMP Product Data, see paragraph titled "BMP Installation and Removal" for submittal details. Implement, maintain, inspect, and remove BMPs in accordance with the fact sheets, product data sheets, and the CSWRCB CGP requirements.

Document each BMP in both a narrative section and site map in the SWPPP.

Indicate all BMPs to be implemented, where they will be located, and when they will be installed in the SWPPP. In cases where information about BMP installation, implementation, and management are not available on the CASQA website or in CSWRCB CGP, include the BMP specifications and manufacture instructions in the SWPPP, or in a SWPPP amendment, for approval prior to installation.

Include a discussion of the inspection and maintenance program for all BMPs as identified to be utilized throughout the entire duration of the project in the SWPPP. A qualified person (QSP, or persons appropriately trained by the QSP) will be assigned the responsibility to conduct inspections. List the name and telephone number of that person in the SWPPP.

Select temporary stabilization methods with a minimum longevity period to meet the duration of the project and replace as needed. The BMPs with long longevity will improve relative effectiveness. The guidelines for required longevity for temporary stabilization methods are detailed in Appendix F of the CASQA CABMPHB. Additionally, select the temporary stabilization methods which are habitat sensitive, including, but not limited to: biodegradable or photodegradable materials and materials compatible with existing vegetation.

1.4.2 Permit Registration Documents (PRDs)

Submit PRDs for Government Approval prior to submitting to CSWRCB's SMARTS to obtain permit coverage. Submit PRDs in electronic PDF form for approval.

PRDs include the following:

a. Site Maps

b. Storm Water Pollution Prevention Plan (SWPPP)

c. Signed Certification Statement by the LRP

d. Notice of Intent (NOI)

e. Annual Fee

f. Risk Assessment

g. Annual Report(s)

h. Post-Construction Water Balance or watershed process-based model

Upon approval of the PRDs submittal, electronically file and certify PRDs in SMARTS. The Contractor is the LRP and shall create an LRP account in SMARTS and link the project account to the USACE data submitter SMARTS account, username: CESPKdatasubmit. Ensure all PRDs, annual reports, sampling results and NOTs are electronically signed, certified, and submitted to the CSWRCB via SMARTS.

Electronically file and certify all PRDs prior to construction commencement.

Send the initial NOI fee to the CSWRCB after the NOI has been completed and certified by the LRP no later than seven days prior to the start of construction activities. Do not commence Land Disturbance activities until the PRDs and the annual fee are received by the CSWRCB, and a Waste Discharge Identification (WDID) number is assigned. Provide annual permitting fees to the CSWRCB each year until the NOT submittal has been approved by the Government and the CSWRCB. Obtain the WDID in SMARTS and include it in the SWPPP prior to construction commencement.

Attachment B in the CSWRCB CGP details the requirements needed for each PRD submittal. If the requirements listed in Attachment B are not met, the PRD shall be considered incomplete and the NOI will be rejected.

Submit the Post Construction Water Balance Performance Standard Spreadsheet or watershed process-based model with the NOI as described in Appendix 2 of CSWRCB CGP. Perform an evaluation to determine if the area is subject to post-construction standards of an active P I or II Municipal Separate Storm Sewer System (MS4) permit that has an approved Storm Water Management Plan to determine applicability of this requirement.

Dually submit each Annual Report to the Government and to the CSWRCB's SMARTS no later than 1-September of each year, and at the end of the project in electronic PDF form. Certify the annual report in SMARTS as the LRP no later than 1-September of each year. Submit an annual report at the end of the project to cover the beginning of the compliance year to the end of the project in order to apply for permit termination. The reporting year is 1- July through 30-June. An annual report is to be submitted for sites that are active for three months or more in each reporting period. Each annual report shall be in accordance with the special provisions within the CSWRCB CGP requirements. The Annual report shall document all training for:

individuals responsible for any activity associated with compliance with the CSWRCB CGP requirements; individuals responsible for BMP installation, inspection, maintenance and repair; and individuals responsible for overseeing, revising, and amending the SWPPP. Each annual report shall consist of, but is not limited to, the following:

a. a summary and evaluation of all sampling and analysis results, including copies of laboratory reports;

b. the analytical method(s), method reporting unit(s), and method detection limit(s) of each analytical parameter (analytical results that are less than the method detection limit shall be reported as "less than the method detection limit");

c. a summary of all corrective actions taken during the compliance year;

d. identification of any compliance activities or corrective actions that were not implemented;

e. a summary of all violations of the CSWRCB CGP;

f. the names of individual(s) who performed the facility inspections, sampling, visual observation (inspections), and/or measurements;

g. the date, place, time of facility inspections, sampling, visual observation (inspections), and/or measurements, including precipitation (rain gauge); and

h. the visual observation and sample collection exception records and reports specified in Attachments D: Risk Level 2 Requirements.

i. Ad hoc reports with individual sample results that are not shown in the daily averages (if used). Ad hoc reports are to be uploaded into SMARTS as a Word document.

Submit sampling results for all non-visible pollutant samples collected during any breach, malfunction, leakage, or spill observed which could result in the discharge of pollutants to surface waters that would not be visually detectable in stormwater. Submit sampling results in electronic PDF form.

PART 2 PRODUCTS

SWPPP and CSMP development details are provided in Part 1 of these specifications. This section defined which BMPs are required to be utilized and included in the SWPPP, as well as a list of additional BMPs that are available for use. All BMPs shall follow their specified CASQA CABMPHB BMP fact sheet except where more stringent requirements are stated in these specifications or in the BMPs' manufacturer's recommendations. Additional design requirements for particular BMPs are stated in Part 1: GENERAL of this specification. Additional mobilization/demobilization, maintenance, and inspection requirements are stated in Part 3: EXECUTION of this specification.

2.1 REQUIRED BEST MANAGEMENT PRACTICES

2.1.1 Erosion Control BMPs

Weed seed banks in the agricultural fields to be converted to native habitat areas have been shown to have weed seed banks averaging 200 lbs per acre.

Weeds typically germinate and grow quickly. Weed growth can be used as an erosion control BMP. Coordinate weed control methods with management of erosion control BMP’s to ensure that adequate quantities of weeds are present to provide adequate erosion protection. Weeds that have grown and have been killed by herbicide applications will continue to provide erosion protection for some period of time. Long term erosion control will be provided by seeding and establishing native grasses. Follow the additional recommendations as provided in Section 32 92 33 GRASS SEEDING AND EROSION CONTROL to be in compliance for seeding or other long-term BMPs. In disturbed areas that will be more highly prone to erosion, install and maintain a combination of two or more of the following five erosion control BMPs for soil protection in each area: hydraulic mulch, hydroseeding, broadcast seeding, soil binders, straw mulch, or geotextile and mats.

Choose the BMPs with minimum longevity to meet the duration of the project, and those which offer habitat sensitive, biodegradable or photodegradable features, when allowed by site conditions.

2.1.1.1 Scheduling

Utilize scheduling as an erosion control BMP in accordance with the CASQA CABMPHB "Scheduling, EC-1" fact sheet. Schedule work to eliminate soil disturbance activities during rain events. If work is to be done when rainfall is predicted, adjust the construction schedule to allow the implementation of erosion and sedimentation controls on all disturbed area prior to rainfall.

2.1.1.2 Preservation Of Existing Vegetation

Utilize this BMP as an erosion control BMP in accordance with the CASQA CABMPHB "Preservation of Existing Vegetation, EC-2" fact sheet. Identify and protect vegetation that provides erosion and sedimentation control benefits when possible. Provide temporary fencing prior to the commencement of soil disturbing activities to protect existing vegetation.

2.1.1.3 Hydraulic Mulch

This BMP shall meet the CASQA CABMPHB "Hydraulic Mulch, EC-3" fact sheet standards.

2.1.1.4 Hydroseeding

This BMP shall meet the CASQA CABMPHB "Hydroseeding, EC-4" fact sheet

Hydroseeding requires sufficient time in the season to ensure adequate vegetation establishment and erosion control prior to rainfall. If conditions for seeding (per specifications, BMP factsheet , and manufacturers recommendations) cannot be met within 14-days of the area becoming inactive, install Geotextiles or mats to ensure soil cover until the optimum seeding time is available. Follow the paragraph titled, "Geotextiles and Mats" and specification section 32 92 33 GRASS SEEDING AND EROSION CONTROL for product and installation requirements.

2.1.1.5 Soil Binders

This BMP shall meet the CASQA CABMPHB "Soil Binders, EC-5" fact sheet

2.1.1.6 Straw Mulch

This BMP shall meet the CASQA CABMPHB "Straw Mulch, EC-6" fact sheet

2.1.1.7 Geotextiles And Mats

The use of plastic liners is discouraged, use plastic material only where deemed necessary and shall be approved by the Contracting Officer prior to use. Material selection, site preparation, seeding, anchoring, and installation requirements are detailed in the CASQA CABMPHB fact sheet.

This BMP shall meet the CASQA CABMPHB "Geotextiles and Mats, EC-7" fact sheet standards.

When seed is placed in combination with Rolled Erosion Control Products, seed the area before blanket installation. Re-seed all areas disturbed during blanket installation. Ensure blankets are anchored and are uniformly in contact with the soil. If direct contact with the soil cannot be maintained (such as on rocky slopes) use alternate erosion control methods shall be used rather than rolled erosion control products.

2.1.2 Sediment Control BMPs

Install and maintain the following sediment control BMPs. Choose the following BMPs with minimum longevity to meet the duration of the project, and those that offer habitat sensitive, biodegradable or photodegradable features, when allowed by site conditions. Do not use of sandbags or straw bales shall unless otherwise directed by the Contracting Officer.

2.1.2.1 Silt Fence

Install and maintain silt fences as a sediment control BMP in accordance with the CASQA CABMPHB "Silt Fence, SE-1" fact sheet. Secondary to fiber rolls, silt fences are temporary linear sediment barriers of permeable fabric designed to intercept and slow the flow of sediment-laden sheet flow runoff. Properly trench and key in silt fences for full effectiveness.

Remove and properly dispose damaged silt fences and replace with new ones.

Remove sediment when the sediment accumulation reaches 1/3 of the barrier height. Design and layout, materials and installation requirements are detailed in the CASQA CABMPHB fact sheets, which shall be adhered to.

2.1.2.2 Sediment Basin

If necessary, install and maintain sediment basins as a sediment control BMP in accordance with the CASQA CABMPHB "Sediment Basin, SE-2" fact sheet. Use sediment basins where sediment-laden water may enter the drainage system or watercourse and/or in association with dikes, temporary channels, and pipes used to convey runoff from disturbed areas. Use sediment basins in conjunction with erosion control practices to reduce the amount of sediment flowing into the basin.

The QSP shall inspect the sediment basin prior to any likely forecasted rain event, daily during rain events, after rain events, and a minimum of once per week when a rain event is not likely. Periodically remove accumulated sediment in order to maintain BMP effectiveness. The QSP shall ensure the sediment is removed when sediment accumulation reaches one-half the designated sediment storage volume. The QSP shall ensure all standing storm water from the basins is removed within 96 hours after accumulation.

Basins with an impounding levee greater than 4.5 feet tall, measured from the lowest point of the impounding area to the highest point of the levee, and basins capable of impounding more than 35,000 square feet, shall be designed by a Registered Civil Engineer.

2.1.2.2 Fiber Rolls

Install and maintain fiber rolls as a sediment control BMP in accordance with the CASQA CABMPHB "Fiber Rolls, SE-5" fact sheet. Preferred over silt fences, fiber rolls (or straw wattles) consists of straw, flax, or other similar materials bound into a tight tubular roll. Use fiber rolls containing biodegradable materials with photodegradable netting. Properly trench and stake fiber rolls for full effectiveness. Repair split, torn, unraveling or slumping fiber rolls within 48 hours of identification.

Remove sediment when sediment accumulation reaches 1/3 the designed sediment storage depth. When installing on a slope, the slope inclination controls the required spacing as detailed in the CASQA CABMPHB fact sheet, and the Risk Level 2 requirements in the CSWRCB CGP (see paragraph MAINTENANCE, MONITORING AND INSPECTIONS). Fiber rolls shall comply with Section 32 92 33 Grass Seeding and Erosion Control paragraph titled “Straw Wattles.”

2.1.2.3 Street Sweeping And Vacuuming

Utilize this BMP as a sediment control BMP in accordance with the CASQA CABMPHB "Street Sweeping and Vacuuming, SE-7" fact sheet. Implement this BMP anywhere sediment is tracked from the project site onto public or private paved roads, especially at points of ingress/egress. Use Self-propelled or walk-behind equipment to remove sediment and clean paved areas.

Kick brooms or sweeper attachments are not allowed. Sweep and/or vacuum visible sediment tracking to eliminate unauthorized non-storm water discharge from reaching surface water or drainage systems. When tracked or spilled sediment is observed outside the construction limits, remove it immediately; continuous removal may be required. If sediment is wet or when tracked soil is caked, scrape the soil loose. The discharge of any debris (litter, rubble, discarded refuse, and remains of destroyed inorganic anthropogenic waste) is prohibited. After sweeping is finished, properly dispose of sweeper wastes at an approved dumpsite.

2.1.2.4 Storm Drain Inlet Protection

Install and maintain this BMP as a sediment control BMP in accordance with the CASQA CABMPHB "Storm Drain Inlet Protection, SE-10" fact sheet. Every storm drain inlet potentially receiving sediment-laden runoff from any construction related areas shall be protected against permitting the transmission of polluted waters. Choose one of the three following types of storm drain inlet protection devices based on site conditions. Specify the type in the SWPPP detailing maintenance and installation, and locations shown on the Site Maps.

a. Excavated Drop Inlet Sediment Trap: An excavated area around the inlet to trap sediment.

b. Gravel bag barrier: Used to create small sediment trap upstream of inlets on sloped paved streets. Appropriate for sheet flow or when concentrated flow may exceed 0.5 cfs, and where overtopping is required to prevent flooding.

c. Block and Gravel Filter: Appropriate for flows greater than 0.5 cfs.

2.1.3 Wind Erosion Control BMP

Utilize the wind erosion control BMP as a minimum BMP requirement. Utilize the wind erosion control BMP in accordance with the CASQA CABMPHB "Wind Erosion Control, WE-1" fact sheet. Apply water or other dust palliatives as necessary to prevent or alleviate dust nuisance. Provide covers for haul trucks transporting materials. Provide rapid clean up of sediments deposited on paved roads. Prevent dust from leaving the construction site by providing dust control during dust generating construction activities (including but not limited to construction traffic on roadways and grading).

2.1.4 Tracking Control BMPs

Tracking control BMPs consists of preventing or reducing vehicle tracking from entering a storm drain or watercourse. Tracking control BMPs include:

stabilized construction entrance/exit, stabilized construction roadway, and entrance/outlet tire wash. Utilize these BMPS to preclude dirt or mud from being tracked onto public roads or to adjacent water bodies. Utilize Tracking Control BMPs in accordance with the CASQA CABMPHB Tracking Control, TC-1 through TC-3, fact sheets, as detailed below.

2.1.4.1 Stabilized Construction Entrance/Exit

Utilize this BMP in accordance with the CASQA CABMPHB "Stabilized Construction Entrance/Exit, TC-1" fact sheet. Design the stabilized entrance/exit to support the heaviest vehicles and equipment that will use

it. Use of constructed/manufactured steel plates with ribs shall be detailed in the SWPPP for approval. If the aggregate method is selected, it shall follow the size and depth as detailed in the fact sheet and shall be detailed in the SWPPP for approval.

2.1.5 Non-Stormwater Management BMPs

Provide source control BMPs to prevent or reduce pollution of stormwater.

These BMPs are referred to as "good housekeeping practices" which involve keeping a clean, orderly construction site. The discharge of any debris (litter, rubble, discarded refuse, and remains of destroyed inorganic anthropogenic waste) is prohibited.

2.1.5.1 Illicit Connection/Illegal Discharge Detection And Reporting

Utilize this BMP in accordance with the CASQA CABMPHB "Illicit Connection/Discharge, NS-6" fact sheet. Illicit connection/illegal discharge detection and reporting is applicable anytime an illicit connection or discharge is discovered or illegally dumped material is found on the construction site. Notify the Contracting Officer of any illicit connections and illegal dumping or discharge incidents at the time of discovery. The Contracting Officer will notify the appropriate organizations for reporting.

2.1.5.2 Vehicle And Equipment Cleaning

Utilize this BMP in accordance with the CASQA CABMPHB "Vehicle and Equipment Cleaning, NS-8" fact sheet. On-site vehicle and equipment washing is discouraged; however, when it shall occur onsite, insure the wash area is located away from storm drain inlets, drainage facilities or watercourses, and pave (with concrete or asphalt) and berm the area to contain wash waters and to prevent run-on and runoff, configured with a sump to allow collection and disposal of wash water. Do not discharge wash waters to storm drains or watercourses.

2.1.5.3 Vehicle And Equipment Fueling

Fueling, NS-9" fact sheet. Follow the standards and specifications as described in the CASQA CABMPHB fact sheet. Immediately clean up spills up and properly dispose of contaminated cleanup materials.

2.1.5.4 Vehicle And Equipment Maintenance

Maintenance, NS-10" fact sheet. Use drip pads or absorbent pads during vehicle and equipment maintenance work that involves fluids, unless the maintenance work is performed over an impermeable surface in a dedicated maintenance area. Inspect vehicles and equipment on each day of use; repair leaks s immediately or remove the problem vehicle or equipment from the project site.

2.1.6 Waste Management And Materials Pollution Control BMPs

Provide source control BMPs to prevent or reduce pollution of stormwater.

These BMPs involve day-to-day operations of the construction site and are under the control of the Contractor. They are additional "good housekeeping practices".

2.1.6.1 Material Delivery And Storage

Utilize this BMP in accordance with the CASQA CABMPHB "Material Delivery and Storage, WM-1" fact sheet. The products requiring BMP implementation with delivery and storage are the following: hazardous chemicals, soil stabilizers and binders, fertilizers, detergents, plaster, petroleum products, asphalt and concrete components, pesticides and herbicides, or any other materials that may be detrimental if released to the environment.

Include [Safety Data Sheets (SDS) ][Safety Data Sheets (SDS) in the SWPPP and supplied to the Contracting Officer for all stored materials.

2.1.6.2 Material Use

Utilize this BMP in accordance with the CASQA CABMPHB "Material Use, WM-2" fact sheet. These procedures apply when the following materials are used or prepared on site: hazardous chemicals, soil stabilizers and binders, fertilizers, detergents, plaster, petroleum products, asphalt and concrete components, pesticides and herbicides, or any other materials that may be detrimental if released to the environment. Provide Safety Data Sheets (SDS) to the Contracting Officer for all materials and includethem in the

SWPPP.

2.1.6.3 Stockpile Management

Utilize this BMP in accordance with the CASQA CABMPHB "Stockpile Management, WM-3" fact sheet. Protect any stockpile on site from wind and erosion caused by storm water. Cover and protect stockpiles with a temporary linear and sediment barrier prior to the onset of precipitation. The use of plastic liners is discouraged. Use Plastic material only where deemed necessary and shall be approved by the Contracting Officer prior to use.

Securely protect all stockpiled waste materials from wind and rain at all times unless actively being used. Divert runoff around or away from the stockpile on the upstream perimeter. Repair and/or replace perimeter control and covers as needed, or as directed by the Contracting Officer, to keep them functioning properly. Remove sediment when sediment accumulation reaches one-third (1/3) of the barrier height.

2.1.6.4 Spill Prevention And Control

Utilize this BMP in accordance with the CASQA CABMPHB "Spill Prevention and Control, WM-4" fact sheet. Implement spill control procedures anytime chemicals and/or hazardous substances are stored. Substances may include, but are not limited to: soil stabilizers/binders, dust palliatives, herbicides, growth inhibitors, fertilizers, deicing/anti-icing chemicals, fuels, lubricants, or other petroleum distillates.

Include a Spill Control Plan as part of the Environmental Protection Plan, as detailed in this contract. Educate employees on how to meet cleanup and storage procedures, as well as any other information provided in the fact sheet.

2.1.6.5 Sanitary/Septic Waste Management

Utilize this BMP in accordance with the CASQA CABMPHB "Sanitary/Septic Waste Management, WM-9" fact sheet. The QSP shall monitor onsite sanitary/septic waste storage and disposal procedures. Provide proper containment for each temporary sanitary facility to prevent discharge of pollutants to the stormwater drainage system. The Contractor is responsible for the education, storage and disposal procedures as detailed in the fact sheet.

2.2 AVAILABLE BEST MANAGEMENT PRACTICES

The Contractor is not required to utilize these specific BMPs, however in order to comply with this specification and the CSWRCB CGP requirements, additional BMPs will be necessary in addition to the required BMPs listed in paragraph 2.1 of these specifications. If any of the following BMPs are to be utilized, the requirements in their specific BMP fact sheet shall be followed and included in the SWPPP, if they are not to be used, provide justification. Additional BMPs include, but are not limited to:

AVAILABLE BMPs

BEST MANAGEMENT PRACTICE

BMP FACT SHEET

REFERENCE

NUMBER

Wood Mulching EC - 8

Earth Dikes and Drainage Swales EC - 9

Velocity Dissipation Devices EC - 10

Slope Drains EC - 11

Streambank Stabilization EC - 12

Compost Blankets EC - 14

Soil Preparation / Roughening EC - 15

Non-Vegetative Stabilization EC - 16

Sediment Basin SE - 2

Sediment Trap SE - 3

Check Dam SE - 4

Gravel Bag Berm SE - 6

AVAILABLE BMPs

BEST MANAGEMENT PRACTICE

BMP FACT SHEET

REFERENCE

NUMBER

Sandbag Barrier SE - 8

Straw Bale Barrier SE - 9

Active Treatment System SE - 11

Temporary Silt Dike SE - 12

Compost Socks and Berms SE - 13

Biofilter Bags SE - 14

Stabilized Construction Roadway TC - 2

Entrance/Outlet Tire Wash TC - 3

Water Conservation Practices NS - 1

Dewatering Operations NS - 2

Paving and Grinding Operations NS - 3

Temporary Stream Crossing NS - 4

Clear Water Diversion NS - 5

Potable Water/Irrigation NS - 7

Pile Driving Operations NS - 11

Concrete Curing NS - 12

Concrete Finishing NS - 13

Material and Equipment Use NS - 14

Demolition Adjacent to Water NS - 15

Temporary Batch Plant NS - 16

Solid Waste Management WM - 5

Hazardous Waste Management WM - 6

Contaminated Soil Management WM - 7

Concrete Waste Management WM - 8

Liquid Waste Management WM - 10

2.3 ON-SITE RAIN GAUGE

At least one rain gauge shall be installed on site. The QSD may determine that additional rain gauge(s) are required to quantify precipitation at the project site. Locate the rain gauge in an open area; mount on a post 3 to 5 feet above the ground. Rain gauge shall extend several inches beyond the post. The top of the rain gauge shall be level.

PART 3 EXECUTION

3.1 MOBILIZATION AND DEMOBILIZATION

3.1.1 BMP Installation And Removal

Install and remove all BMPs per their specific manufacturers' recommendations and their specific CASQA CABMPHB BMP fact sheet. Submit all BMP Product Data no later than 72 hours prior to installing BMPs listed in the approved SWPPP. Submit a SWPPP Amendment and BMP Product Data sheets to add new BMPs to the SWPPP prior to installation. BMP product data sheets shall contain product specifications and manufacturer's recommendations to include the following: application, limitations, longevity, replacement frequency, installation instructions, inspections, ecological information and removal instructions. Include all installation and removal details for each BMP in the SWPPP. Design details are available in PART 1: GENERAL of this specification. BMP product information details are available in PART 2: PRODUCTS of this specification.

Through the duration of the project, the QSP shall certify that all BMPs are installed properly, and document certification in the inspection reports no later than 48 hours after installation.

3.1.2 Termination Of SWPPP And CSMP Responsibilities

Upon completion of construction activities, submit the Post-Construction Storm Water Management Plan, Final SWPPP, Final Annual Report and NOT Application before the contractor's stormwater management obligation for the site is terminated. Continue to implement permit and specification requirements until the NOT submittal has been first approved by the Government, then approved by the CSWRCB. The Final SWPPP submittal details can be found in the paragraph titled "SWPPP And Amendments."

The Post-Construction Storm Water Management Plan submittal shall provide information required for the long-term maintenance plan designated for a minimum of five years. Identify the parties responsible for the site's short and long-term maintenance plan. It shall describe the procedures to ensure that the post-construction storm water management measures are adequately maintained. It shall also provide product data information for each post-construction BMP to be left onsite after the permit is terminated, including BMP warranty information, design and operation information, and manufacturer's maintenance and removal instructions. Long-term measures shall be in accordance with specification section 32 92 33 GRASS SEEDING AND

EROSION CONTROL.

Subm…