Agenda, regular meeting — Campbell City Council, November 21, 2023 (part 2 of 5)

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A B C
Entry
114.61

0.32 0.36
Watershed Erosion Estimate (=RxKxLS) in tons/acre
Site Sediment Risk Factor
Low Sediment Risk: < 15 tons/acre
Medium Sediment Risk: >=15 and <75 tons/acre
High Sediment Risk: >= 75 tons/acre
K Factor Value
LS Factor Value
Low
C) LS Factor (weighted average, by area, for all slopes) The soil-erodibility factor K represents: (1) susceptibility of soil or surface material to erosion, (2) transportability of the sediment, and (3) the amount and rate of runoff given a particular rainfall input, as measured under a standard condition. Fine-textured soils that are high in clay have low K values (about 0.05 to 0.15) because the particles are resistant to detachment. Coarse-textured soils, such as sandy soils, also have low K values (about 0.05 to 0.2) because of high infiltration resulting in low runoff even though these particles are easily detached. Medium-textured soils, such as a silt loam, have moderate K values (about 0.25 to 0.45) because they are moderately susceptible to particle detachment and they produce runoff at moderate rates. Soils having a high silt content are especially susceptible to erosion and have high K values, which can exceed 0.45 and can be as large as 0.65. Silt-size particles are easily detached and tend to crust, producing high rates and large volumes of runoff. Use Site-specific data must be submitted.

The effect of topography on erosion is accounted for by the LS factor, which combines the effects of a hillslope-length factor, L, and a hillslope-gradient factor, S. Generally speaking, as hillslope length and/or hillslope gradient increase, soil loss increases. As hillslope length increases, total soil loss and soil loss per unit area increase due to the progressive accumulation of runoff in the downslope direction. As the hillslope gradient increases, the velocity and erosivity of runoff increases. Use the LS table located in separate tab of this spreadsheet to determine LS factors.

Estimate the weighted LS for the site prior to construction.

13.203072
RUSLE K-factor map (Google KML file) provided by the State Board RUSLE LS-factor map (Google KML file) provided by the State Board Sediment Risk Factor Worksheet
A) R Factor
R Factor Value
B) K Factor (weighted average, by area, for all site soils) Analyses of data indicated that when factors other than rainfall are held constant, soil loss is directly proportional to a rainfall factor composed of total storm kinetic energy (E) times the maximum 30-min intensity (I30) (Wischmeier and Smith, 1958). The numerical value of R is the average annual sum of EI30 for storm events during a rainfall record of at least 22 years. "Isoerodent" maps were developed based on R values calculated for more than 1000 locations in the Western U.S. Refer to the link below to determine the R factor for the project site. http://cfpub.epa.gov/npdes/stormwater/LEW/lewCalculator.cfm

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building= = Appendix C=
=

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building= = Appendix C=
=
Combined Risk Level Matrix

Sediment Risk
Receiving Water
Risk
Low Medium High
Low Level 1 Level 2
High Level 2 Level 3

Project Sediment Risk: Low 1
Project RW Risk: High 2
Project Combined Risk: Level 2

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building= = Appendix C=
=
Signed Certification Statement

NITIAL SWPPP CERTIFICATION BY CONTRACTOR
Project Name: Campbell Police Operations Building
Project Number:

“I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to ensure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, to the best of my knowledge and belief, the information submitted is true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.”

Contractor’s Signature Date

Contractor’s Name and Title Telephone Number

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building= = Appendix C=
=

OWNER APPROVAL AND CERTIFICATION OF SWPPP

Owners (or Authorized Representative)
Approval and Certification of the
Storm Water Pollution Prevention Plan
Project Name: `~ãéÄÉää=mçäáÅÉ=léÉê~íáçåë=_ìáäÇáåÖ
Project Number:

Owner/Developer Signature Date

Owner/Developer Name Telephone Number

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building= = Appendix C=
=
Annual Fee

S
torm Water fee invoices are sent to every person who filed a Notice of Intent (NOI) with the State Water Resources Control Board (SWRCB). The invoice is your bill for the twelve month period shown. Under state law, a fee is assessed annually for persons who may discharge industrial and/or construction storm water under a general permit. SWRCB fee information may be found on the internet at: http://www.waterboards.ca.gov/resources/fees

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix D
Appendix D: SWPPP Amendment Certifications

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building= = Appendix D=
SWPPP Amendment No.

Project Name: C ampbell Police Operations Building

Project Number: 30132.10

Qualified SWPPP Developer’s Certification of the
Stormwater Pollution Prevention Plan Amendment
“This Stormwater Pollution Prevention Plan and attachments were prepared under my direction to meet the requirements of the California Construction General Permit (SWRCB Order No. 2009-009-DWQ as amended by 2010-0014-DWQ). I certify that I am a Qualified SWPPP Developer in good standing as of the date signed below.”

QSD’s Signature
Cynthia Dunnells
Date
QSD 01103
QSD Name
Project Engineer
QSD Certificate Number
(916) 287-2350
Title and Affiliation
60 S Market Street, Suite #1250
San Jose, CA 95113
Telephone
[email protected]
Address Email

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix E
Appendix E: Submitted Changes to PRDs

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix E
Log of Updated PRDs
The General Permit allows for the reduction or increase of the total acreage covered under the General Permit when a portion of the project is complete and/or conditions for termination of coverage have been met; when ownership of a portion of the project is purchased by a different entity; or when new acreage is added to the project.

Modified PRDs shall be filed electronically within 30 days of a reduction or increase in total disturbed area if a change in permit covered acreage is to be sought. The SWPPP shall be modified appropriately, with revisions and amendments recorded in Appendix C. Updated PRDs submitted electronically via SMARTS can be found in this Appendix.

This appendix includes all of the following updated PRDs (check all that apply):

Revised Notice of Intent (NOI);

Revised Site Map;

Revised Risk Assessment;

New landowner’s information (name, address, phone number, email address); and

New signed certification statement.

Legally Responsible Person

Signature of Legally Responsible Person or Approved
Signatory
Date

Name of Legally Responsible Person or Approved
Signatory
Telephone Number

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building= = Appendix F=
Appendix F: Construction Schedule
Contractor to add construction schedule to SWPPP once available.

Current scheduling information:

Anticipated project start date: 08/01/2023
Anticipated project end date: 01/31/2026

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix G
Appendix G: Construction Activities, Materials Used, and Associated Pollutants Table G.1 Construction Activities and Associated Pollutants Phase Activity Associated Materials or Pollutants Pollutant Category(1) Grading and Land
Development
Planting / Vegetation
Management Vegetation removal Nutrients, Metals,
Synthetic Organics
Removal of Existing
Structures
Demolition of asphalt, concrete,
masonry, framing, roofing, metal
surfaces
Metals, Oil and Grease,
Synthetic Organics
Sanitary Waste Portable Toilets
Distrubance of existing sewer lines Nutrients
Solid Waste Litter, trash and debris
Vegetation Gross Pollutants
Vehicle and Equipment
Use
Equipment operation, maintenance,
washing and fueling Oil and Grease
Streets and Utilities Phase
Planting / Vegetation
Management Vegetation removal Nutrients, Metals,
Synthetic Organics
Plumbing
Solder (lead, tin), flux (zinc chloride),
pipe fitting; Galvanized metal in nails,
fences and electric wiring
Metals, Synthetic
Organics
Removal of Existing
Structures
Demolition of asphalt, concrete,
masonry, framing, roofing, metal
surfaces
Metals, Oil and Grease,
Synthetic Organics
Sanitary Waste Portable Toilets
Distrubance of existing sewer lines Nutrients
Soil Preparation /
Amendments Use of soil additives/amendments Nutrients
Solid Waste Litter, trash and debris
Vegetation Gross Pollutants
Utility Line Testing and
Flushing Hydrostatic test water, pipe flushing Synthetic Organics Vehicle and Equipment
Use
Equipment operation, maintenance,
washing and fueling Oil and Grease
Vertical Construction Phase Painting
Paint thinners, acetone, methyl ethyl
ketone, stripper paints, lacquers,
varnish, enamels, turpentine, gum
spirit, solvents, dyes, stripping
pigments and sanding
Metals, Synthetic
Organics
Planting / Vegetation
Management Vegetation removal Nutrients, Metals,
Synthetic Organics
Plumbing
Solder (lead, tin), flux (zinc chloride),
pipe fitting; Galvanized metal in nails,
fences and electric wiring
Metals, Synthetic
Organics
Roofing Flashing, saw cut slurries (tile cutting),
shingle scrap and debris
Metals, Oil and Grease,
Synthetic Organics
Sanitary Waste Portable Toilets
Distrubance of existing sewer lines Nutrients
Solid Waste Litter, trash and debris
Vegetation Gross Pollutants

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix G
Table G.1 Construction Activities and Associated Pollutants Phase Activity Associated Materials or Pollutants Pollutant Category(1) Utility Line Testing and
Flushing Hydrostatic test water, pipe flushing Synthetic Organics Vehicle and Equipment
Use
Equipment operation, maintenance,
washing and fueling Oil and Grease
Landscaping and Site Stabilization
Phase
Painting
Paint thinners, acetone, methyl ethyl
ketone, stripper paints, lacquers,
varnish, enamels, turpentine, gum
spirit, solvents, dyes, stripping
pigments and sanding
Metals, Synthetic
Organics
Planting / Vegetation
Management Vegetation removal Nutrients, Metals,
Synthetic Organics
Roofing Flashing, saw cut slurries (tile cutting),
shingle scrap and debris
Metals, Oil and Grease,
Synthetic Organics
Soil Preparation /
Amendments Use of soil additives/amendments Nutrients
Vehicle and Equipment
Use
Equipment operation, maintenance,
washing and fueling Oil and Grease

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix H
Appendix H: CASQA Stormwater BMP Handbook Portal: Construction Fact Sheets

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD)

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD)

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD)

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Hydraulic Mulch EC-3
July 2012 California Stormwater BMP Handbook 1 of 5
Construction
www.casqa.org

Description and Purpose
Hydraulic Mulch consists of various types of fibrous materials mixed with water and sprayed onto the soil surface in slurry form to provide a layer of temporary protection from wind and water erosion.

Suitable Applications
Hydraulic mulch as a temporary, stand alone, erosion control BMP is suitable for disturbed areas that require temporary protection from wind and water erosion until permanent soil stabilization activities commence. Examples include:
 Rough-graded areas that will remain inactive for longer than permit-required thresholds (e.g., 14 days) or otherwise require stabilization to minimize erosion or prevent
sediment discharges.
 Soil stockpiles.
 Slopes with exposed soil between existing vegetation such as trees or shrubs.
 Slopes planted with live, container-grown vegetation or plugs.
 Slopes burned by wildfire.

Categories
EC Erosion Control 
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control 
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics

Potential Alternatives
EC-4 Hydroseeding
EC-5 Soil Binders
EC-6 Straw Mulch
EC-7 Geotextiles and Mats
EC-8 Wood Mulching
EC-14 Compost Blanket
EC-16 Non-Vegetative Stabilization
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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July 2012 California Stormwater BMP Handbook 2 of 5
Construction
www.casqa.org
Hydraulic mulch can also be applied to augment other erosion control BMPs such as:
 In conjunction with straw mulch (see EC-6 Straw Mulch) where the rate of hydraulic mulch is reduced to 100-500 lbs per acre and the slurry is applied over the straw as a tackifying agent to hold the straw in place.
 Supplemental application of soil amendments, such as fertilizer, lime, gypsum, soil bio- stimulants or compost.

Limitations
In general, hydraulic mulch is not limited by slope length, gradient or soil type. However, the following limitations typically apply:
 Most hydraulic mulch applications, particularly bonded fiber matrices (BFMs), require at least 24 hours to dry before rainfall occurs.
 Temporary applications (i.e., without a vegetative component) may require a second application in order to remain effective for an entire rainy season.  Treatment areas must be accessible to hydraulic mulching equipment.  Availability of water sources in remote areas for mixing and application.  As a stand-alone temporary BMP, hydraulic mulches may need to be re-applied to maintain their erosion control effectiveness, typically after 6-12 months depending on the type of mulch used.
 Availability of hydraulic mulching equipment may be limited just prior to the rainy season and prior to storms due to high demand.
 Cellulose fiber mulches alone may not perform well on steep slopes or in course soils.  This BMP consists of a mixture of several constituents (e.g., fibers/mulches, tackifiers, and other chemical constituents), some of which may be proprietary and may come pre-mixed by the manufacturer. The water quality impacts of these constituents are relatively unknown and some may have water quality impacts due to their chemical makeup. Refer to specific chemical properties identified in the product Material Safety Data Sheet; products should be evaluated for project-specific implementation by the SWPPP Preparer. Refer to factsheet EC-05 for further guidance on selecting soil binders.

Implementation
 Where feasible, it is preferable to prepare soil surfaces prior to application by roughening embankments and fill areas with a crimping or punching type roller or by track walking.  The majority of hydraulic mulch applications do not necessarily require surface/soil preparation (See EC-15 Soil Preparation) although in almost every case where re-vegetation is included as part of the practice, soil preparation can be beneficial. One of the advantages of hydraulic mulch over other erosion control methods is that it can be applied in areas where soil preparation is precluded by site conditions, such as steep slopes, rocky soils, or inaccessibility.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Hydraulic Mulch EC-3
July 2012 California Stormwater BMP Handbook 3 of 5
Construction
www.casqa.org
 Avoid mulch over spray onto roads, sidewalks, drainage channels, existing vegetation, etc.  Hydraulic mulching is generally performed utilizing specialized machines that have a large water-holding/mixing tank and some form of mechanical agitation or other recirculation method to keep water, mulch and soil amendments in suspension. The mixed hydraulic slurry can be applied from a tower sprayer on top of the machine or by extending a hose to areas remote from the machine.
 Where possible apply hydraulic mulch from multiple directions to adequately cover the soil.

Application from a single direction can result in shadowing, uneven coverage and failure of the BMP.
 Hydraulic mulch can also include a vegetative component, such as seed, rhizomes, or stolons (see EC-4 Hydraulic Seed).
 Typical hydraulic mulch application rates range from 2,000 pounds per acre for standard mulches (SMs) to 3,500 pounds per acre for BFMs. However, the required amount of hydraulic mulch to provide adequate coverage of exposed topsoil may appear to exceed the standard rates when the roughness of the soil surface is changed due to soil preparation methods (see EC-15 Soil Preparation) or by slope gradient.  Other factors such as existing soil moisture and soil texture can have a profound effect on the amount of hydraulic mulch required (i.e. application rate) applied to achieve an erosion- resistant covering.
 Avoid use of mulch without a tackifier component, especially on slopes.  Mulches used in the hydraulic mulch slurry can include:
Cellulose fiber
Thermally-processed wood fibers
Cotton
Synthetics
Compost (see EC-14, Compost Blanket)
 Additional guidance on the co mparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook.

Categories of Hydraulic Mulches
Standard Hydraulic Mulch (SM)
Standard hydraulic mulches are generally applied at a rate of 2,000 pounds per acre and are manufactured containing around 5% tackifier (i.e. soil binder), usually a plant-derived guar or psyllium type. Most standard mulches are green in color derived from food-color based dyes.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Hydraulic Mulch EC-3
July 2012 California Stormwater BMP Handbook 4 of 5
Construction
www.casqa.org
Hydraulic Matrices (HM) and Stabilized Fiber Matrices (SFM) Hydraulic matrices and stabilized fiber matrices are slurries which contain increased levels of tackifiers/soil binders; usually 10% or more by weight. HMs and SFMs have improved performance compared to a standard hydraulic mulch (SM) because of the additional percentage of tackifier and because of their higher application rates, typically 2,500 – 4,000 pounds per acre. Hydraulic matrices can include a mixture of fibers, for example, a 50/50 blend of paper and wood fiber. In the case of an SFM, the tackifier/soil binder is specified as a polyacrylamide (PAM).

Bonded Fiber Matrix (BFM)
Bonded fiber matrices (BFMs) are hydraulically-applied systems of fibers, adhesives (typically guar based) and chemical cross-links. Upon drying, the slurry forms an erosion-resistant blanket that prevents soil erosion and promotes vegetation establishment. The cross-linked adhesive in the BFM should be biodegradable and should not dissolve or disperse upon re- wetting. BFMs are typically applied at rates from 3,000 to 4,000 lbs/acre based on the manufacturer’s recommendation. BFMs should not be applied immediately before, during or immediately after rainfall or if the soil is saturated. Depending on the product, BFMs typically require 12 to 24 hours to dry and become effective.

Mechanically-Bonded Fiber Matrices (MBFM)
Mechanically-bonded fiber matrices (MBFMs) are hydraulically applied systems similar to BFM that use crimped synthetic fibers and PAM and are typically applied to a slope at a higher application rate than a standard BFM.

Hydraulic Compost Matrix (HCM)
Hydraulic compost matrix (HCM) is a field-derived practice whereby finely graded or sifted compost is introduced into the hydraulic mulch slurry. A guar-type tackifier can be added for steeper slope applications as well as any specified seed mixtures. A HCM can help to accelerate seed germination and growth. HCMs are particularly useful as an in-fill for three-dimensional re-vegetation geocomposites, such as turf reinforcement mats (TRM) (see EC-7 Geotextiles and Mats).

Costs
Average installed costs for hydraulic mulch categories are is provided in Table 1, below.

Table 1
HYDRAULIC MULCH BMPs

INSTALLED COSTS
BMP Installed Cost/Acre

Standard Hydraulic Mulching (SM) $1,700 - $3,600 per acre Hydraulic Matrices (HM) and Stabilized Fiber Matrices
Guar-based
PAM-based

$2,000 - $4,000 per acre
$2,500 - $5,610 per acre
Bonded Fiber Matrix (BFM) $3,900 - $6,900 per acre
Mechanically Bonded Fiber Matrix (MBFM) $4,500 - $6,000 per acre Hydraulic Compost Matrix (HCM) $3,000 - $3,500 per acre

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July 2012 California Stormwater BMP Handbook 5 of 5
Construction
www.casqa.org
Source: Cost information received from individual product manufacturers solicited by Geosyntec Consultants (2004)
Inspection and Maintenance
 Maintain an unbroken, temporary mulched ground cover throughout the period of construction when the soils are not being reworked.
 BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Areas where erosion is evident should be repaired and BMPs re-applied as soon as possible.

Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require re-application of BMPs.
 Compare the number of bags or weight of applied mulch to the area treated to determine actual application rates and compliance with specifications.

References
Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007.

Controlling Erosion of Construction Sites, Agricultural Information #347, U.S. Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) (formerly Soil Conservation Service – SCS).

Guides for Erosion and Sediment Control in California, USDA Soils Conservation Service, January 1991.

Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995.

Sedimentation and Erosion Control, An Inventory of Current Practices Draft, US EPA, April 1990.

Soil Erosion by Water, Agriculture Information Bulletin #513, U.S. Department of Agriculture, Soil Conservation Service.

Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of Transportation (Caltrans), November 1999
Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992.

Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Hydroseeding EC-4
July 2012 California Stormwater BMP Handbook 1 of 4
Construction
www.casqa.org
Description and Purpose
Hydroseeding typically consists of applying a mixture of a hydraulic mulch, seed, fertilizer, and stabilizing emulsion with a hydraulic mulcher, to temporarily protect exposed soils from erosion by water and wind. Hydraulic seeding, or
hydroseeding, is simply the method by which temporary or permanent seed is applied to the soil surface.

Suitable Applications
Hydroseeding is suitable for disturbed areas requiring
temporary protection until permanent stabilization is
established, for disturbed areas that will be re-disturbed following an extended period of inactivity, or to apply permanent stabilization measures. Hydroseeding without mulch or other cover (e.g. EC-7, Erosion Control Blanket) is not a stand-alone erosion control BMP and should be combined with additional measures until vegetation establishment.

Typical applications for hydroseeding include:
 Disturbed soil/graded areas where permanent stabilization or continued earthwork is not anticipated prior to seed germination.
 Cleared and graded areas exposed to seasonal rains or temporary irrigation.
 Areas not subject to heavy wear by construction equipment or high traffic.

Potential Alternatives
EC-3 Hydraulic Mulch
EC-5 Soil Binders
EC-6 Straw Mulch
EC-7 Geotextiles and Mats
EC-8 Wood Mulching
EC-14 Compost Blanket
EC-16 Non-Vegetative Stabilization
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Hydroseeding EC-4
July 2012 California Stormwater BMP Handbook 2 of 4
Construction
www.casqa.org
Limitations
 Availability of hydroseeding equipment may be limited just prior to the rainy season and prior to storms due to high demand.
 Hydraulic seed should be applied with hydraulic mulch or a stand-alone hydroseed application should be followed by one of the following:
Straw mulch (see Straw Mulch EC-6)
Rolled erosion control products (see Geotextiles and Mats EC-7) Application of Compost Blanket (see Compost Blanket EC-14) Hydraulic seed may be used alone only on small flat surfaces when there is sufficient time in the season to ensure adequate vegetation establishment and coverage to provide adequate erosion control.
 Hydraulic seed without mulch does not provide immediate erosion control.  Temporary seeding may not be appropriate for steep slopes (i.e., slopes readily prone to rill erosion or without sufficient topsoil).
 Temporary seeding may not be appropriate in dry periods without supplemental irrigation.  Temporary vegetation may have to be removed before permanent vegetation is applied.  Temporary vegetation may not be appropriate for short term inactivity (i.e. less than 3-6 months).
 This BMP consists of a mixture of several constituents (e.g., fibers/mulches, tackifiers, and other chemical constituents), some of which may be proprietary and may come pre-mixed by the manufacturer. The water quality impacts of these constituents are relatively unknown and some may have water quality impacts due to their chemical makeup. Additionally these constituents may require non-visible pollutant monitoring. Refer to specific chemical properties identified in the product Material Safety Data Sheet; products should be evaluated for project-specific implementation by the SWPPP Preparer. Refer to factsheet EC-05 for further guidance on selecting soil binders.

Implementation
In order to select appropriate hydraulic seed mixtures, an evaluation of site conditions should be performed with respect to:
Soil conditions - Maintenance requirements
Site topography and exposure (sun/wind) - Sensitive adjacent areas Season and climate - Water availability
Vegetation types - Plans for permanent vegetation

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Hydroseeding EC-4
July 2012 California Stormwater BMP Handbook 3 of 4
Construction
www.casqa.org
The local office of the U.S.D.A. Natural Resources Conservation Service (NRCS), Resource Conservation Districts and Agricultural Extension Service can provide information on appropriate seed mixes.

The following steps should be followed for implementation:
 Where appropriate or feasible, soil should be prepared to receive the seed by disking or otherwise scarifying (See EC-15, Soil Preparation) the surface to eliminate crust, improve air and water infiltration and create a more favorable environment for germination and growth.  Avoid use of hydraulic seed in areas where the BMP would be incompatible with future earthwork activities.
 Hydraulic seed can be applied using a multiple step or one step process. In a multiple step process, hydraulic seed is applied first, followed by mulch or a Rolled Erosion Control Product (RECP).
In the one step process, hydraulic seed is applied with hydraulic mulch in a hydraulic matrix. When the one step process is used to apply the mixture of fiber, seed, etc., the seed rate should be increased to compensate for all seeds not having direct contact with the soil.
 All hydraulically seeded areas should have mulch, or alternate erosion control cover to keep seeds in place and to moderate soil moisture and temperature until the seeds germinate and grow.
 All seeds should be in conformance with the California State Seed Law of the Department of Agriculture. Each seed bag should be delivered to the site sealed and clearly marked as to species, purity, percent germination, dealer's guarantee, and dates of test. The container should be labeled to clearly reflect the amount of Pure Live Seed (PLS) contained. All legume seed should be pellet inoculated. Inoculant sources should be species specific and should be applied at a rate of 2 lb of inoculant per 100 lb seed.  Commercial fertilizer should conform to the requirements of the California Food and Agricultural Code, which can be found at
http://www.leginfo.ca.gov/.html/fac_table_of_contents.html. Fertilizer should be pelleted or granular form.
 Follow up applications should be made as needed to cover areas of poor coverage or germination/vegetation establishment and to maintain adequate soil protection.  Avoid over spray onto roads, sidewalks, drainage channels, existing vegetation, etc.  Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Hydroseeding EC-4
July 2012 California Stormwater BMP Handbook 4 of 4
Construction
www.casqa.org
Costs
Average cost for installation and maintenance may vary from as low as $1,900 per acre for flat slopes and stable soils, to $4,000 per acre for moderate to steep slopes and/or erosive soils.

Cost of seed mixtures vary based on types of required vegetation.

BMP Installed
Cost per Acre
Hydraulic Seed $1,900-$4,000
Source: Cost information received from individual product manufacturers solicited by Geosyntec Consultants (2004).

Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require re-application of BMPs.
 Where seeds fail to germinate, or they germinate and die, the area must be re-seeded, fertilized, and mulched within the planting season, using not less than half the original application rates.
 Irrigation systems, if applicable, should be inspected daily while in use to identify system malfunctions and line breaks. When line breaks are detected, the system must be shut down immediately and breaks repaired before the system is put back into operation.  Irrigation systems should be inspected for complete coverage and adjusted as needed to maintain complete coverage.

References
Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007.

Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of Transportation (Caltrans), November 1999.

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July 2012 California Stormwater BMP Handbook 1 of 8
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Description and Purpose
Soil binding consists of application and maintenance of a soil stabilizer to exposed soil surfaces. Soil binders are materials applied to the soil surface to temporarily prevent water and wind induced erosion of exposed soils on construction sites.

Suitable Applications
Soil binders are typically applied to disturbed areas requiring temporary protection. Because soil binders, when used as a stand-alone practice, can often be incorporated into the soil, they are a good alternative to mulches in areas where grading activities will soon resume. Soil binders are commonly used in the following areas:
 Rough graded soils that will be inactive for a short period of time
 Soil stockpiles
 Temporary haul roads prior to placement of crushed rock  Compacted soil road base
 Construction staging, materials storage, and layout areas Limitations
 Soil binders are temporary in nature and may need
reapplication.
 Soil binders require a minimum curing time until fully effective, as prescribed by the manufacturer. Curing time Categories
EC Erosion Control 
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control 
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics

Potential Alternatives
EC-3 Hydraulic Mulch
EC-4 Hydroseeding
EC-6 Straw Mulch
EC-7 Geotextiles and Mats
EC-8 Wood Mulching
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may be 24 hours or longer. Soil binders may need reapplication after a storm event.  Soil binders will generally experience spot failures during heavy rainfall events. If runoff penetrates the soil at the top of a slope treated with a soil binder, it is likely that the runoff will undercut the stabilized soil layer and discharge at a point further down slope.  Plant-material-based soil binders do not generally hold up to pedestrian or vehicular traffic across treated areas as well as polymeric emulsion blends or cementitious-based binders.  Soil binders may not sufficiently penetrate compacted soils.  Some soil binders are soil texture specific in terms of their effectiveness. For example, polyacrylamides (PAMs) work very well on silt and clayey soils but their performance decreases dramatically in sandy soils.
 Some soil binders may not perform well with low relative humidity. Under rainy conditions, some agents may become slippery or leach out of the soil.  Soil binders may not cure if low temperatures occur within 24 hours of application.  The water quality impacts of some chemical soil binders are relatively unknown and some may have water quality impacts due to their chemical makeup. Additionally, these chemical may require non-visible pollutant monitoring. Products should be evaluated for project- specific implementation by the SWPPP Preparer. Refer to the product Material Safety Data Sheet for chemical properties.

Implementation
General Considerations
 Soil binders should conform to local municipality specifications and requirements.  Site soil types will dictate appropriate soil binders to be used.  A soil binder must be environmentally benign (non-toxic to plant and animal life), easy to apply, easy to maintain, economical, and should not stain paved or painted surfaces. Soil binders should not pollute stormwater when cured. Obtain a Material Safety Data Sheet (MSDS) from the manufacturer to ensure non-toxicity.
 Stormwater runoff from PAM treated soils should pass through one of the following sediment control BMP prior to discharging to surface waters. When the total drainage area is greater than or equal to 5 acres, PAM treated areas should drain to a sediment basin.
Areas less than 5 acres should drain to sediment control BMPs, such as a sediment trap, or a series of check dams. The total number of check dams used should be maximized to achieve the greatest amount of settlement of sediment prior to discharging from the site.

Each check dam should be spaced evenly in the drainage channel through which stormwater flows are discharged off site.

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 Performance of soil binders depends on temperature, humidity, and traffic across treated areas.
 Avoid over spray onto roads, sidewalks, drainage channels, existing vegetation, etc.  Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook.

Selecting a Soil Binder
Properties of common soil binders used for erosion control are provided on Table 1 at the end of this Fact Sheet. Use Table 1 to select an appropriate soil binder. Refer to WE-1, Wind Erosion Control, for dust control soil binders.

Factors to consider when selecting a soil binder include the following:
 Suitability to situation - Consider where the soil binder will be applied, if it needs a high resistance to leaching or abrasion, and whether it needs to be compatible with any existing vegetation. Determine the length of time soil stabilization will be needed, and if the soil binder will be placed in an area where it will degrade rapidly. In general, slope steepness is not a discriminating factor for the listed soil binders.  Soil types and surface materials - Fines and moisture content are key properties of surface materials. Consider a soil binder's ability to penetrate, likelihood of leaching, and ability to form a surface crust on the surface materials.
 Frequency of application - The frequency of application is related to the functional longevity of the binder, which can be affected by subgrade conditions, surface type, climate, and maintenance schedule.
 Frequent applications could lead to high costs. Application frequency may be minimized if the soil binder has good penetration, low evaporation, and good longevity. Consider also that frequent application will require frequent equipment clean up.

Plant-Material-Based (Short Lived, <6 months) Binders
Guar: Guar is a non-toxic, biodegradable, natural galactomannan-based hydrocolloid treated with dispersant agents for easy field mixing. It should be mixed with water at the rate of 11 to 15 lb per 1,000 gallons. Recommended minimum application rates are as follows:

Application Rates for Guar Soil Stabilizer
Slope (H:V): Flat 4:1 3:1 2:1 1:1
lb/acre: 40 45 50 60 70
Psyllium: Psyllium is composed of the finely ground muciloid coating of plantago seeds that is applied as a dry powder or in a wet slurry to the surface of the soil. It dries to form a firm but rewettable membrane that binds soil particles together, but permits germination and growth of seed. Psyllium requires 12 to 18 hours drying time. Application rates should be from 80 to 200 lb/acre, with enough water in solution to allow for a uniform slurry flow.

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Starch: Starch is non-ionic, cold water soluble (pre-gelatinized) granular cornstarch. The material is mixed with water and applied at the rate of 150 lb/acre. Approximate drying time is 9 to 12 hours.

Plant-Material-Based (Long Lived, 6-12 months) Binders
Pitch and Rosin Emulsion: Generally, a non-ionic pitch and rosin emulsion has a minimum solids content of 48%. The rosin should be a minimum of 26% of the total solids content. The soil stabilizer should be non-corrosive, water dilutable emulsion that upon application cures to a water insoluble binding and cementing agent. For soil erosion control applications, the emulsion is diluted and should be applied as follows:
 For clayey soil: 5 parts water to 1 part emulsion
 For sandy soil: 10 parts water to 1 part emulsion
Application can be by water truck or hydraulic seeder with the emulsion and product mixture applied at the rate specified by the manufacturer.

Polymeric Emulsion Blend Binders
Acrylic Copolymers and Polymers: Polymeric soil stabilizers should consist of a liquid or solid polymer or copolymer with an acrylic base that contains a minimum of 55% solids. The polymeric compound should be handled and mixed in a manner that will not cause foaming or should contain an anti-foaming agent. The polymeric emulsion should not exceed its shelf life or expiration date; manufacturers should provide the expiration date. Polymeric soil stabilizer should be readily miscible in water, non-injurious to seed or animal life, non-flammable, should provide surface soil stabilization for various soil types without totally inhibiting water infiltration, and should not re-emulsify when cured. The applied compound typically requires 12 to 24 hours drying time. Liquid copolymer should be diluted at a rate of 10 parts water to 1 part polymer and the mixture applied to soil at a rate of 1,175 gallons/acre.

Liquid Polymers of Methacrylates and Acrylates: This material consists of a tackifier/sealer that is a liquid polymer of methacrylates and acrylates. It is an aqueous 100% acrylic emulsion blend of 40% solids by volume that is free from styrene, acetate, vinyl, ethoxylated surfactants or silicates. For soil stabilization applications, it is diluted with water in accordance with the manufacturer’s recommendations, and applied with a hydraulic seeder at the rate of 20 gallons/acre. Drying time is 12 to 18 hours after application.

Copolymers of Sodium Acrylates and Acrylamides: These materials are non-toxic, dry powders that are copolymers of sodium acrylate and acrylamide. They are mixed with water and applied to the soil surface for erosion control at rates that are determined by slope gradient:

Slope Gradient
(H:V) lb/acre
Flat to 5:1 3.0 – 5.0
5:1 to 3:1 5.0 – 10.0
2:1 to 1:1 10.0 – 20.0

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Poly-Acrylamide (PAM) and Copolymer of Acrylamide: Linear copolymer polyacrylamide for use as a soil binder is packaged as a dry flowable solid, as a liquid. Refer to the manufacturer’s recommendation for dilution and application rates as they vary based on liquid or dry form, site conditions and climate.
 Limitations specific to PAM are as follows:
Do not use PAM on a slope that flows into a water body without passing through a sediment trap or sediment basin.
The specific PAM copolymer formulation must be anionic. Cationic PAM should not be used in any application because of known aquatic toxicity problems. Only the highest drinking water grade PAM, certified for compliance with ANSI/NSF Standard 60 for drinking water treatment, should be used for soil applications. PAM designated for erosion and sediment control should be “water soluble” or “linear” or “non-cross linked”.
PAM should not be used as a stand-alone BMP to protect against water-based erosion.

When combined with mulch, its effectiveness increases dramatically.

Hydro-Colloid Polymers: Hydro-Colloid Polymers are various combinations of dry flowable poly-acrylamides, copolymers and hydro-colloid polymers that are mixed with water and applied to the soil surface at rates of 55 to 60 lb/acre. Drying times are 0 to 4 hours.

Cementitious-Based Binders
Gypsum: This is a formulated gypsum based product that readily mixes with water and mulch to form a thin protective crust on the soil surface. It is composed of high purity gypsum that is ground, calcined and processed into calcium sulfate hemihydrate with a minimum purity of 86%. It is mixed in a hydraulic seeder and applied at rates 4,000 to 12,000 lb/acre. Drying time is 4 to 8 hours.

Applying Soil Binders
After selecting an appropriate soil binder, the untreated soil surface must be prepared before applying the soil binder. The untreated soil surface must contain sufficient moisture to assist the agent in achieving uniform distribution. In general, the following steps should be followed:
 Follow manufacturer’s written recommendations for application rates, pre-wetting of application area, and cleaning of equipment after use.
 Prior to application, roughen embankment and fill areas.  Consider the drying time for the selected soil binder and apply with sufficient time before anticipated rainfall. Soil binders should not be applied during or immediately before rainfall.
 Avoid over spray onto roads, sidewalks, drainage channels, sound walls, existing vegetation, etc.

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 Soil binders should not be applied to frozen soil, areas with standing water, under freezing or rainy conditions, or when the temperature is below 40°F during the curing period.  More than one treatment is often necessary, although the second treatment may be diluted or have a lower application rate.
 Generally, soil binders require a minimum curing time of 24 hours before they are fully effective. Refer to manufacturer's instructions for specific cure time.  For liquid agents:
Crown or slope ground to avoid ponding.
Uniformly pre-wet ground at 0.03 to 0.3 gal/yd2 or according to manufacturer’s recommendations.
Apply solution under pressure. Overlap solution 6 to 12 in. Allow treated area to cure for the time recommended by the manufacturer; typically at least 24 hours.
Apply second treatment before first treatment becomes ineffective, using 50% application rate.
In low humidities, reactivate chemicals by re-wetting with water at 0.1 to 0.2 gal/yd2.

Costs
Costs vary according to the soil stabilizer selected for implementation. The following are approximate installed costs:

Soil Binder Cost per Acre
(2004)1
Estimated Cost
per Acre
(2009)2
Plant-Material-Based (Short Lived) Binders $700-$900 $770-$990 Plant-Material-Based (Long Lived) Binders $1,200-$1,500 $1,320-$1,650 Polymeric Emulsion Blend Binders $700 -$1,500 $770-$1,650 Cementitious-Based Binders $800-$1,200 $880-$1,350

1. Source: Cost information received from individual product manufacturers solicited by Geosyntec Consultants (2004).

2. 2009 costs reflect a 10% escalation over year 2004 costs. Escalation based on informal survey of industry trends. Note: Expected cost increase is offset by competitive economic conditions.

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 Areas where erosion is evident should be repaired and BMPs re-applied as soon as possible.

Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require re-application of BMPs.
 Reapply the selected soil binder as needed to maintain effectiveness.

Table 1 Properties of Soil Binders for Erosion Control
Evaluation Criteria
Binder Type
Plant Material
Based (Short
Lived)
Plant Material
Based (Long
Lived)
Polymeric
Emulsion Blends
Cementitious-
Based Binders
Relative Cost Low Moderate to
High Low to High Low to Moderate
Resistance to Leaching High High Low to Moderate Moderate Resistance to Abrasion Moderate Low Moderate to High Moderate to High Longevity Short to Medium Medium Medium to Long Medium
Minimum Curing Time
before Rain 9 to 18 hours 19 to 24 hours 0 to 24 hours 4 to 8 hours Compatibility with
Existing Vegetation Good Poor Poor Poor
Mode of Degradation Biodegradable Biodegradable
Photodegradable/
Chemically
Degradable
Photodegradable/
Chemically
Degradable
Labor Intensive No No No No
Specialized Application
Equipment
Water Truck or
Hydraulic
Mulcher
Water Truck or
Hydraulic
Mulcher
Water Truck or
Hydraulic Mulcher
Water Truck or
Hydraulic Mulcher
Liquid/Powder Powder Liquid Liquid/Powder Powder
Surface Crusting Yes, but dissolves
on rewetting Yes Yes, but dissolves on
rewetting Yes
Clean Up Water Water Water Water
Erosion Control
Application Rate Varies (1) Varies (1) Varies (1) 4,000 to 12,000 lbs/acre
(1) See Implementation for specific rates.

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References
Erosion Control Pilot Study Report, State of California Department of Transportation (Caltrans), June 2000.

Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995.

Sedimentation and Erosion Control, An Inventory of Current Practices Draft, US EPA, April 1990.

Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of Transportation (Caltrans), November 1999.

Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Straw Mulch EC-6
July 2012 California Stormwater BMP Handbook 1 of 4
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Description and Purpose
Straw mulch consists of placing a uniform layer of straw and incorporating it into the soil with a studded roller or crimper, or anchoring it with a tackifier or stabilizing emulsion. Straw mulch protects the soil surface from the impact of rain drops, preventing soil particles from becoming dislodged.

Suitable Applications
Straw mulch is suitable for disturbed areas requiring temporary protection until permanent stabilization is established. Straw mulch can be specified for the following applications:
 As a stand-alone BMP on disturbed areas until soils can be prepared for permanent vegetation. The longevity of straw mulch is typically less than six months.
 Applied in combination with temporary seeding strategies  Applied in combination with permanent seeding strategies to enhance plant establishment and final soil stabilization  Applied around containerized plantings to control erosion until the plants become established to provide permanent stabilization
Limitations
Availability of straw and straw blowing equipment may be limited just prior to the rainy season and prior to storms due to high demand.

Potential Alternatives
EC-3 Hydraulic Mulch
EC-4 Hydroseeding
EC-5 Soil Binders
EC-7 Geotextiles and Mats
EC-8 Wood Mulching
EC-14 Compost Blanket
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 There is a potential for introduction of weed seed and unwanted plant material if weed-free agricultural straw is not specified.
 Straw mulch applied by hand is more time intensive and potentially costly.  Wind may limit application of straw and blow straw into undesired locations.  May have to be removed prior to permanent seeding or prior to further earthwork.  “Punching” of straw does not work in sandy soils, necessitating the use of tackifiers.  Potential fugitive dust control issues associated with straw applications can occur.

Application of a stabilizing emulsion or a water stream at the same time straw is being blown can reduce this problem.
 Use of plastic netting should be avoided in areas where wildlife may be entrapped and may be prohibited for projects in certain areas with sensitive wildlife species, especially reptiles and amphibians.

Implementation
 Straw should be derived from weed-free wheat, rice, or barley. Where required by the plans, specifications, permits, or environmental documents, native grass straw should be used.  Use tackifier to anchor straw mulch to the soil on slopes.  Crimping, punch roller-type rollers, or track walking may also be used to incorporate straw mulch into the soil on slopes. Track walking can be used where other methods are impractical.
 Avoid placing straw onto roads, sidewalks, drainage channels, sound walls, existing vegetation, etc.
 Straw mulch with tackifier should not be applied during or immediately before rainfall.  Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook.

Application Procedures
 When using a tackifier to anchor the straw mulch, roughen embankment or fill areas by rolling with a crimping or punching-type roller or by track walking before placing the straw mulch. Track walking should only be used where rolling is impractical.  Apply straw at a rate of between 3,000 and 4,000 lb/acre, either by machine or by hand distribution and provide 100% ground cover. A lighter application is used for flat surfaces and a heavier application is used for slopes.
 Evenly distribute straw mulch on the soil surface.
 Anchoring straw mulch to the soil surface by "punching" it into the soil mechanically (incorporating) can be used in lieu of a tackifier.

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 Methods for holding the straw mulch in place depend upon the slope steepness, accessibility, soil conditions, and longevity.
A tackifier acts to glue the straw fibers together and to the soil surface. The tackifier should be selected based on longevity and ability to hold the fibers in place. A tackifier is typically applied at a rate of 125 lb/acre. In windy conditions, the rates are typically 180 lb/acre.
On very small areas, a spade or shovel can be used to punch in straw mulch. On slopes with soils that are stable enough and of sufficient gradient to safely support construction equipment without contributing to compaction and instability problems, straw can be "punched" into the ground using a knife blade roller or a straight bladed coulter, known commercially as a "crimper.”
Costs
Average annual cost for installation and maintenance is included in the table below. Application by hand is more time intensive and potentially more costly.

BMP Unit Cost per Acre
Straw mulch, crimped or punched $2,458-$5,375
Straw mulch with tackifier $1,823-$4,802
Source: Cost information received from individual product suppliers solicited by Geosyntec Consultants (2004).

Care should be exercised to minimize the damage to protected areas while making repairs, as any area damaged will require re-application of BMPs.
 The key consideration in inspection and maintenance is that the straw needs to last long enough to achieve erosion control objectives. Straw mulch as a stand-alone BMP is temporary and is not suited for long-term erosion control.  Maintain an unbroken, temporary mulched ground cover while disturbed soil areas are inactive. Repair any damaged ground cover and re-mulch exposed areas.  Reapplication of straw mulch and tackifier may be required to maintain effective soil stabilization over disturbed areas and slopes.

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References
Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007.

Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005.

Controlling Erosion of Construction Sites, Agricultural Information Bulletin #347, U.S.

Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) (formerly Soil Conservation Service – SCS).

Guides for Erosion and Sediment Control in California, USDA Soils Conservation Service, January 1991.

Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995.

Soil Erosion by Water, Agricultural Information Bulletin #513, U.S. Department of Agriculture, Soil Conservation Service.

Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992.

Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988.

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Description and Purpose
Soil Preparation/Roughening involves assessment and
preparation of surface soils for BMP installation. This can include soil testing (for seed base, soil characteristics, or nutrients), as well as roughening surface soils by mechanical methods (including sheepsfoot rolling, track walking,
scarifying, stair stepping, and imprinting) to prepare soil for additional BMPs, or to break up sheet flow. Soil Preparation can also involve tilling topsoil to prepare a seed bed and/or incorporation of soil amendments, to enhance vegetative establishment.

Suitable Applications
Soil preparation: Soil preparation is essential to proper vegetative establishment. In particular, soil preparation (i.e. tilling, raking, and amendment) is suitable for use in
combination with any soil stabilization method, including RECPs or sod. Soil preparation should not be confused with roughening.

Roughening: Soil roughening is generally referred to as track walking (sometimes called imprinting) a slope, where treads from heavy equipment run parallel to the contours of the slope and act as mini terraces. Soil preparation is most effective when used in combination with erosion controls. Soil
Roughening is suitable for use as a complementary process for controlling erosion on a site. Roughening is not intended to be used as a stand-alone BMP, and should be used with perimeter controls, additional erosion control measures, grade breaks, and vegetative establishment for maximum effectiveness.

Roughening is intended to only affect surface soils and should not compromise slope stability or overall compaction. Suitable applications for soil roughening include:

Categories
EC Erosion Control 
SE Sediment Control 
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics

Potential Alternatives
EC-3 Hydraulic Mulch
EC-5 Soil Binders
EC-7 Geotextiles and Mats
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
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 Along any disturbed slopes, including temporary stockpiles, sediment basins, or compacted soil diversion berms and swales.
 Roughening should be used in combination with hydraulically applied stabilization methods, compost blanket, or straw mulch; but should not be used in combination with RECPs or sod because roughening is intended to leave terraces on the slope.

Limitations
 Preparation and roughening must take place prior to installing other erosion controls (such as hydraulically applied stabilizers) or sediment controls (such as fiber rolls) on the faces of slopes.
 In such cases where slope preparation is minimal, erosion control/revegetation BMPs that do not require extensive soil preparation - such as hydraulic mulching and seeding applications - should be employed.
 Consideration should be given to the type of erosion control BMP that follows surface preparation, as some BMPs are not designed to be installed over various types of tillage/roughening, i.e., RECPs (erosion control blankets) should not be used with soil roughening due to a “bridging” effect, which suspends the blanket above the seed bed.  Surface roughness has an effect on the amount of mulch material that needs to be applied, which shows up as a general increase in mulch material due to an increase in surface area (Topographic Index -see EC-3 Hydraulic Mulching).

Implementation
 Additional guidance on the comparison and selection of temporary slope stabilization methods is provided in Appendix F of the Handbook.

General
A roughened surface can significantly reduce erosion. Based on tests done at the San Diego State Erosion Research Laboratory, various roughening techniques on slopes can result in a 12 - 76% reduction in the erosion rate versus smooth slopes.

Materials
Minimal materials are required unless amendments and/or seed are added to the soil. The majority of soil roughening/preparation can be done with equipment that is on hand at a normal construction site, such as bull dozers and compaction equipment.

Installation Guidelines
Soil Preparation
 Where appropriate or feasible, soil should be prepared to receive the seed by disking or otherwise scarifying the surface to eliminate crust, improve air and water infiltration and create a more favorable environment for germination and growth.  Based upon soil testing conducted, apply additional soil amendments (e.g. fertilizers, additional seed) to the soil to help with germination. Follow EC-4, Hydroseeding, when selecting and applying seed and fertilizers.

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Cut Slope Roughening:
 Stair-step grade or groove the cut slopes that are steeper than 3:1.  Use stair-step grading on any erodible material soft enough to be ripped with a bulldozer.

Slopes consisting of soft rock with some subsoil are particularly suited to stair-step grading.  Make the vertical cut distance less than the horizontal distance, and slightly slope the horizontal position of the "step" in toward the vertical wall.  Do not make individual vertical cuts more than 2 feet (0.6 m) high in soft materials or more than 3 feet (0.9 m) high in rocky materials.
 Groove the slope using machinery to create a series of ridges and depressions that run across the slope, on the contour.

Fill Slope Roughening:
 Place on fill slopes with a gradient steeper than 3:1 in lifts not to exceed 8 inches (0.2 m), and make sure each lift is properly compacted.
 Ensure that the face of the slope consists of loose, uncompacted fill 4-6 inches (0.1-0.2 m) deep.
 Use grooving or tracking to roughen the face of the slopes, if necessary.  Do not blade or scrape the final slope face.

Roughening for Slopes to be Mowed:
 Slopes which require mowing activities should not be steeper than 3:1.  Roughen these areas to shallow grooves by track walking, scarifying, sheepsfoot rolling, or imprinting.
 Make grooves close together (less than 10 inches), and not less than 1 inch deep, and perpendicular to the direction of runoff (i.e., parallel to the slope contours).  Excessive roughness is undesirable where mowing is planned.

Roughening With Tracked Machinery:
 Limit roughening with tracked machinery to soils with a sandy textural component to avoid undue compaction of the soil surface.
 Operate tracked machinery up and down the slope to leave horizontal depressions in the soil. Do not back-blade during the final grading operation.  Seed and mulch roughened areas as soon as possible to obtain optimum seed germination and growth.

8.b
Packet Pg. 305
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Soil Preparation/Roughening EC- 15
November 2009 California Stormwater BMP Handbook 4 of 4 Construction
www.casqa.org

Costs
Costs are based on the additional labor of tracking or preparation of the slope plus the cost of any required soil amendment materials.

References
Soil Stabilization BMP Research for Erosion and Sediment Controls: Cost Survey Technical Memorandum, State of California Department of Transportation (Caltrans), July 2007.

Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005.

8.b
Packet Pg. 306
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Water Conservation Practices NS-1
January 2011 California Stormwater BMP Handbook 1 of 2
Construction
www.casqa.org
Description and Purpose
Water conservation practices are activities that use water during the construction of a project in a manner that avoids causing erosion and the transport of pollutants offsite. These practices can reduce or eliminate non-stormwater discharges.

Suitable Applications
Water conservation practices are suitable for all construction sites where water is used, including piped water, metered water, trucked water, and water from a reservoir.

Limitations
 None identified.

Implementation
 Keep water equipment in good working condition.
 Stabilize water truck filling area.
 Repair water leaks promptly.
 Washing of vehicles and equipment on the construction site is discouraged.
 Avoid using water to clean construction areas. If water must be used for cleaning or surface preparation, surface should be swept and vacuumed first to remove dirt. This will minimize amount of water required.

Categories
EC Erosion Control 
SE Sediment Control 
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment 
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 307
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Water Conservation Practices NS-1
January 2011 California Stormwater BMP Handbook 2 of 2
Construction
www.casqa.org
 Direct construction water runoff to areas where it can soak into the ground or be collected and reused.
 Authorized non-stormwater discharges to the storm drain system, channels, or receiving waters are acceptable with the implementation of appropriate BMPs.  Lock water tank valves to prevent unauthorized use.

Costs
The cost is small to none compared to the benefits of conserving water.

Inspection and Maintenance
 Inspect and verify that activity based BMPs are in place prior to the commencement of authorized non-stormwater discharges.
 Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges are occuring.
 Repair water equipment as needed to prevent unintended discharges. Water trucks
Water reservoirs (water buffalos)
Irrigation systems
Hydrant connections
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

8.b
Packet Pg. 308
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Paving and Grinding Operations NS-3
July 2012 California Stormwater BMP Handbook 1 of 5
Construction
www.casqa.org
Description and Purpose
Prevent or reduce the discharge of pollutants from paving operations, using measures to prevent runon and runoff
pollution, properly disposing of wastes, and training employees and subcontractors.

The General Permit incorporates Numeric Action Levels (NAL) for pH and turbidity (see Section 2 of this handbook to determine your project’s risk level and if you are subject to these requirements).

Many types of construction materials associated with paving and grinding operations, including mortar, concrete, and cement and their associated wastes have basic chemical
properties that can raise pH levels outside of the permitted range. Additional care should be taken when managing these materials to prevent them from coming into contact with stormwater flows, which could lead to exceedances of the General Permit requirements.

Suitable Applications
These procedures are implemented where paving, surfacing, resurfacing, or sawcutting, may pollute stormwater runoff or discharge to the storm drain system or watercourses.

Limitations
 Paving opportunities may be limited during wet weather.

Discharges of freshly paved surfaces may raise pH to
environmentally harmful levels and trigger permit
violations.

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash
Metals
Bacteria
Oil and Grease 
Organics

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 309
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Paving and Grinding Operations NS-3
July 2012 California Stormwater BMP Handbook 2 of 5
Construction
www.casqa.org
Implementation
General
 Avoid paving during the wet season when feasible.
 Reschedule paving and grinding activities if rain is forecasted.  Train employees and sub-contractors in pollution prevention and reduction.  Store materials away from drainage courses to prevent stormwater runon (see WM-1, Material Delivery and Storage).
 Protect drainage courses, particularly in areas with a grade, by employing BMPs to divert runoff or to trap and filter sediment.
 Stockpile material removed from roadways away from drain inlets, drainage ditches, and watercourses. These materials should be stored consistent with WM-3, Stockpile Management.
 Disposal of PCC (Portland cement concrete) and AC (asphalt concrete) waste should be in conformance with WM-8, Concrete Waste Management.

Saw Cutting, Grinding, and Pavement Removal
 Shovel or vacuum saw-cut slurry and remove from site. Cover or barricade storm drains during saw cutting to contain slurry.
 When paving involves AC, the following steps should be implemented to prevent the discharge of grinding residue, uncompacted or loose AC, tack coats, equipment cleaners, or unrelated paving materials:
AC grindings, pieces, or chunks used in embankments or shoulder backing should not be allowed to enter any storm drains or watercourses. Install inlet protection and perimeter controls until area is stabilized (i.e. cutting, grinding or other removal activities are complete and loose material has been properly removed and disposed of)or permanent controls are in place. Examples of temporary perimeter controls can be found in EC-9, Earth Dikes and Drainage Swales; SE-1, Silt Fence; SE-5, Fiber Rolls, or SE-13 Compost Socks and Berms
Collect and remove all broken asphalt and recycle when practical. Old or spilled asphalt should be recycled or disposed of properly.
 Do not allow saw-cut slurry to enter storm drains or watercourses. Residue from grinding operations should be picked up by a vacuum attachment to the grinding machine, or by sweeping, should not be allowed to flow across the pavement, and should not be left on the surface of the pavement. See also WM-8, Concrete Waste Management, and WM-10, Liquid Waste Management.
 Pavement removal activities should not be conducted in the rain.  Collect removed pavement material by mechanical or manual methods. This material may be recycled for use as shoulder backing or base material.

8.b
Packet Pg. 310
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Paving and Grinding Operations NS-3
July 2012 California Stormwater BMP Handbook 3 of 5
Construction
www.casqa.org
 If removed pavement material cannot be recycled, transport the material back to an approved storage site.

Asphaltic Concrete Paving
 If paving involves asphaltic cement concrete, follow these steps:
Do not allow sand or gravel placed over new asphalt to wash into storm drains, streets, or creeks. Vacuum or sweep loose sand and gravel and properly dispose of this waste by referring to WM-5, Solid Waste Management.
Old asphalt should be disposed of properly. Collect and remove all broken asphalt from the site and recycle whenever possible.

Portland Cement Concrete Paving
 Do not wash sweepings from exposed aggregate concrete into a storm drain system. Collect waste materials by dry methods, such as sweeping or shoveling, and return to aggregate base stockpile or dispose of properly. Allow aggregate rinse to settle. Then, either allow rinse water to dry in a temporary pit as described in WM-8, Concrete Waste Management, or pump the water to the sanitary sewer if authorized by the local wastewater authority.

Sealing Operations
 During chip seal application and sweeping operations, petroleum or petroleum covered aggregate should not be allowed to enter any storm drain or water courses. Apply temporary perimeter controls until structure is stabilized (i.e. all sealing operations are complete and cured and loose materials have been properly removed and disposed).  Inlet protection (SE-10, Storm Drain Inlet Protection) should be used during application of seal coat, tack coat, slurry seal, and fog seal.
 Seal coat, tack coat, slurry seal, or fog seal should not be applied if rainfall is predicted to occur during the application or curing period.

Paving Equipment
 Leaks and spills from paving equipment can contain toxic levels of heavy metals and oil and grease. Place drip pans or absorbent materials under paving equipment when not in use.

Clean up spills with absorbent materials and dispose of in accordance with the applicable regulations. See NS-10, Vehicle and Equipment Maintenance, WM-4, Spill Prevention and Control, and WM-10, Liquid Waste Management.
 Substances used to coat asphalt transport trucks and asphalt spreading equipment should not contain soap and should be non-foaming and non-toxic.  Paving equipment parked onsite should be parked over plastic to prevent soil contamination.
 Clean asphalt coated equipment offsite whenever possible. When cleaning dry, hardened asphalt from equipment, manage hardened asphalt debris as described in WM-5, Solid Waste Management. Any cleaning onsite should follow NS-8, Vehicle and Equipment Cleaning.

8.b
Packet Pg. 311
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Paving and Grinding Operations NS-3
July 2012 California Stormwater BMP Handbook 4 of 5
Construction
www.casqa.org
Thermoplastic Striping
 Thermoplastic striper and pre-heater equipment shutoff valves should be inspected to ensure that they are working properly to prevent leaking thermoplastic from entering drain inlets, the stormwater drainage system, or watercourses.  Pre-heaters should be filled carefully to prevent splashing or spilling of hot thermoplastic.

Leave six inches of space at the top of the pre-heater container when filling thermoplastic to allow room for material to move.
 Do not pre-heat, transfer, or load thermoplastic near drain inlets or watercourses.  Clean truck beds daily of loose debris and melted thermoplastic. When possible, recycle thermoplastic material.

Raised/Recessed Pavement Marker Application and Removal  Do not transfer or load bituminous material near drain inlets, the stormwater drainage system, or watercourses.
 Melting tanks should be loaded with care and not filled to beyond six inches from the top to leave room for splashing.
 When servicing or filling melting tanks, ensure all pressure is released before removing lids to avoid spills.
 On large-scale projects, use mechanical or manual methods to collect excess bituminous material from the roadway after removal of markers.

Costs
 All of the above are low cost measures.

Inspection and Maintenance
 Inspect and verify that activity-based BMPs are in place prior to the commencement of paving and grinding operations.
 BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Sample stormwater runoff required by the General Permit.  Keep ample supplies of drip pans or absorbent materials onsite.  Inspect and maintain machinery regularly to minimize leaks and drips.

References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program, 1995.

8.b
Packet Pg. 312
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Paving and Grinding Operations NS-3
July 2012 California Stormwater BMP Handbook 5 of 5
Construction
www.casqa.org
Hot Mix Asphalt-Paving Handbook AC 150/5370-14, Appendix I, U.S. Army Corps of Engineers, July 1991.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005.

8.b
Packet Pg. 313
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Illicit Connection/Discharge NS-6
January 2011 California Stormwater BMP Handbook 1 of 3
Construction
www.casqa.org
Description and Purpose
Procedures and practices designed for construction contractors to recognize illicit connections or illegally dumped or discharged materials on a construction site and report
incidents.

Suitable Applications
This best management practice (BMP) applies to all
construction projects. Illicit connection/discharge and reporting is applicable anytime an illicit connection or discharge is discovered or illegally dumped material is found on the construction site.

Limitations
Illicit connections and illegal discharges or dumping, for the purposes of this BMP, refer to discharges and dumping caused by parties other than the contractor. If pre-existing hazardous materials or wastes are known to exist onsite, they should be identified in the SWPPP and handled as set forth in the SWPPP.

Implementation
Planning
 Review the SWPPP. Pre-existing areas of contamination should be identified and documented in the SWPPP.
 Inspect site before beginning the job for evidence of illicit connections, illegal dumping or discharges. Document any pre-existing conditions and notify the owner.

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment
Nutrients 
Trash 
Metals 
Bacteria 
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 314
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Illicit Connection/Discharge NS-6
January 2011 California Stormwater BMP Handbook 2 of 3
Construction
www.casqa.org
 Inspect site regularly during project execution for evidence of illicit connections, illegal dumping or discharges.
 Observe site perimeter for evidence for potential of illicitly discharged or illegally dumped material, which may enter the job site.

Identification of Illicit Connections and Illegal Dumping or Discharges  General – unlabeled and unidentifiable material should be treated as hazardous.  Solids - Look for debris, or rubbish piles. Solid waste dumping often occurs on roadways with light traffic loads or in areas not easily visible from the traveled way.  Liquids - signs of illegal liquid dumping or discharge can include:
Visible signs of staining or unusual colors to the pavement or surrounding adjacent soils
Pungent odors coming from the drainage systems
Discoloration or oily substances in the water or stains and residues detained within ditches, channels or drain boxes
Abnormal water flow during the dry weather season
 Urban Areas - Evidence of illicit connections or illegal discharges is typically detected at storm drain outfall locations or at manholes. Signs of an illicit connection or illegal discharge can include:
Abnormal water flow during the dry weather season
Unusual flows in sub drain systems used for dewatering Pungent odors coming from the drainage systems
Discoloration or oily substances in the water or stains and residues detained within ditches, channels or drain boxes
Excessive sediment deposits, particularly adjacent to or near active offsite construction projects
 Rural Areas - Illicit connections or illegal discharges involving irrigation drainage ditches are detected by visual inspections. Signs of an illicit discharge can include:
Abnormal water flow during the non-irrigation season
Non-standard junction structures
Broken concrete or other disturbances at or near junction structures Reporting
Notify the owner of any illicit connections and illegal dumping or discharge incidents at the time of discovery. For illicit connections or discharges to the storm drain system, notify the local stormwater management agency. For illegal dumping, notify the local law enforcement agency.

Cleanup and Removal
The responsibility for cleanup and removal of illicit or illegal dumping or discharges will vary by location. Contact the local stormwater management agency for further information.

8.b
Packet Pg. 315
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Illicit Connection/Discharge NS-6
January 2011 California Stormwater BMP Handbook 3 of 3
Construction
www.casqa.org
Costs
Costs to look for and report illicit connections and illegal discharges and dumping are low. The best way to avoid costs associated with illicit connections and illegal discharges and dumping is to keep the project perimeters secure to prevent access to the site, to observe the site for vehicles that should not be there, and to document any waste or hazardous materials that exist onsite before taking possession of the site.

Inspection and Maintenance
 Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.  Inspect the site regularly to check for any illegal dumping or discharge.  Prohibit employees and subcontractors from disposing of non-job related debris or materials at the construction site.
 Notify the owner of any illicit connections and illegal dumping or discharge incidents at the time of discovery.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.

8.b
Packet Pg. 316
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Potable Water/Irrigation NS-7
January 2011 California Stormwater BMP Handbook 1 of 2
Construction
www.casqa.org
Description and Purpose
Potable Water/Irrigation consists of practices and procedures to manage the discharge of potential pollutants generated during discharges from irrigation water lines, landscape irrigation, lawn or garden watering, planned and unplanned discharges from potable water sources, water line flushing, and hydrant flushing.

Suitable Applications
Implement this BMP whenever potable water or irrigation water discharges occur at or enter a construction site.

Limitations
None identified.

Implementation
 Direct water from offsite sources around or through a construction site, where feasible, in a way that minimizes contact with the construction site.
 Discharges from water line flushing should be reused for landscaping purposes where feasible.
 Shut off the water source to broken lines, sprinklers, or valves as soon as possible to prevent excess water flow.  Protect downstream stormwater drainage systems and
watercourses from water pumped or bailed from trenches
excavated to repair water lines.

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment 
Nutrients 
Trash
Metals 
Bacteria
Oil and Grease
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 317
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Potable Water/Irrigation NS-7
January 2011 California Stormwater BMP Handbook 2 of 2
Construction
www.casqa.org
 Inspect irrigated areas within the construction limits for excess watering. Adjust watering times and schedules to ensure that the appropriate amount of water is being used and to minimize runoff. Consider factors such as soil structure, grade, time of year, and type of plant material in determining the proper amounts of water for a specific area.

Costs
Cost to manage potable water and irrigation are low and generally considered to be a normal part of related activities.

Inspection and Maintenance
 Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events..  Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur.
 Repair broken water lines as soon as possible.
 Inspect irrigated areas regularly for signs of erosion and/or discharge.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.

8.b
Packet Pg. 318
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Vehicle and Equipment Cleaning NS-8
January 2011 California Stormwater BMP Handbook 1 of 3
Construction
www.casqa.org
Description and Purpose
Vehicle and equipment cleaning procedures and practices eliminate or reduce the discharge of pollutants to stormwater from vehicle and equipment cleaning operations. Procedures and practices include but are not limited to: using offsite facilities; washing in designated, contained areas only; eliminating discharges to the storm drain by infiltrating the wash water; and training employees and subcontractors in proper cleaning procedures.

Suitable Applications
These procedures are suitable on all construction sites where vehicle and equipment cleaning is performed.

Limitations
Even phosphate-free, biodegradable soaps have been shown to be toxic to fish before the soap degrades. Sending
vehicles/equipment offsite should be done in conjunction with TC-1, Stabilized Construction Entrance/Exit.

Implementation
Other options to washing equipment onsite include contracting with either an offsite or mobile commercial washing business.

These businesses may be better equipped to handle and dispose of the wash waters properly. Performing this work offsite can also be economical by eliminating the need for a separate washing operation onsite.

If washing operations are to take place onsite, then:

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment 
Nutrients 
Trash
Metals
Bacteria
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 319
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Vehicle and Equipment Cleaning NS-8
January 2011 California Stormwater BMP Handbook 2 of 3
Construction
www.casqa.org
 Use phosphate-free, biodegradable soaps.
 Educate employees and subcontractors on pollution prevention measures.  Do not permit steam cleaning onsite. Steam cleaning can generate significant pollutant concentrates.
 Cleaning of vehicles and equipment with soap, solvents or steam should not occur on the project site unless resulting wastes are fully contained and disposed of. Resulting wastes should not be discharged or buried, and must be captured and recycled or disposed according to the requirements of WM-10, Liquid Waste Management or WM-6, Hazardous Waste Management, depending on the waste characteristics. Minimize use of solvents. Use of diesel for vehicle and equipment cleaning is prohibited.  All vehicles and equipment that regularly enter and leave the construction site must be cleaned offsite.
 When vehicle and equipment washing and cleaning must occur onsite, and the operation cannot be located within a structure or building equipped with appropriate disposal facilities, the outside cleaning area should have the following characteristics:
Located away from storm drain inlets, drainage facilities, or watercourses Paved with concrete or asphalt and bermed to contain wash waters and to prevent runon and runoff
Configured with a sump to allow collection and disposal of wash water No discharge of wash waters to storm drains or watercourses Used only when necessary
 When cleaning vehicles and equipment with water:
Use as little water as possible. High-pressure sprayers may use less water than a hose and should be considered
Use positive shutoff valve to minimize water usage
Facility wash racks should discharge to a sanitary sewer, recycle system or other approved discharge system and must not discharge to the storm drainage system, watercourses, or to groundwater
Costs
Cleaning vehicles and equipment at an offsite facility may reduce overall costs for vehicle and equipment cleaning by eliminating the need to provide similar services onsite. When onsite cleaning is needed, the cost to establish appropriate facilities is relatively low on larger, long- duration projects, and moderate to high on small, short-duration projects.

8.b
Packet Pg. 320
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Vehicle and Equipment Cleaning NS-8
January 2011 California Stormwater BMP Handbook 3 of 3
Construction
www.casqa.org
Inspection and Maintenance
 Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.  Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur.
 Inspection and maintenance is minimal, although some berm repair may be necessary.  Monitor employees and subcontractors throughout the duration of the construction project to ensure appropriate practices are being implemented.
 Inspect sump regularly and remove liquids and sediment as needed.  Prohibit employees and subcontractors from washing personal vehicles and equipment on the construction site.

References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Swisher, R.D. Surfactant Biodegradation, Marcel Decker Corporation, 1987.

8.b
Packet Pg. 321
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Vehicle and Equipment Fueling NS-9
January 2011 California Stormwater BMP Handbook 1 of 3
Construction
www.casqa.org
Description and Purpose
Vehicle equipment fueling procedures and practices are
designed to prevent fuel spills and leaks, and reduce or eliminate contamination of stormwater. This can be
accomplished by using offsite facilities, fueling in designated areas only, enclosing or covering stored fuel, implementing spill controls, and training employees and subcontractors in proper fueling procedures.

Suitable Applications
These procedures are suitable on all construction sites where vehicle and equipment fueling takes place.

Limitations
Onsite vehicle and equipment fueling should only be used where it is impractical to send vehicles and equipment offsite for fueling. Sending vehicles and equipment offsite should be done in conjunction with TC-1, Stabilized Construction
Entrance/ Exit.

Implementation
 Use offsite fueling stations as much as possible. These businesses are better equipped to handle fuel and spills properly. Performing this work offsite can also be
economical by eliminating the need for a separate fueling area at a site.
 Discourage “topping-off” of fuel tanks.

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease 
Organics

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 322
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Vehicle and Equipment Fueling NS-9
January 2011 California Stormwater BMP Handbook 2 of 3
Construction
www.casqa.org
 Absorbent spill cleanup materials and spill kits should be available in fueling areas and on fueling trucks, and should be disposed of properly after use.  Drip pans or absorbent pads should be used during vehicle and equipment fueling, unless the fueling is performed over an impermeable surface in a dedicated fueling area.  Use absorbent materials on small spills. Do not hose down or bury the spill. Remove the adsorbent materials promptly and dispose of properly.
 Avoid mobile fueling of mobile construction equipment around the site; rather, transport the equipment to designated fueling areas. With the exception of tracked equipment such as bulldozers and large excavators, most vehicles should be able to travel to a designated area with little lost time.
 Train employees and subcontractors in proper fueling and cleanup procedures.  When fueling must take place onsite, designate an area away from drainage courses to be used. Fueling areas should be identified in the SWPPP.  Dedicated fueling areas should be protected from stormwater runon and runoff, and should be located at least 50 ft away from downstream drainage facilities and watercourses. Fueling must be performed on level-grade areas.
 Protect fueling areas with berms and dikes to prevent runon, runoff, and to contain spills.  Nozzles used in vehicle and equipment fueling should be equipped with an automatic shutoff to control drips. Fueling operations should not be left unattended.  Use vapor recovery nozzles to help control drips as well as air pollution where required by Air Quality Management Districts (AQMD).
 Federal, state, and local requirements should be observed for any stationary above ground storage tanks.

Costs
 All of the above measures are low cost except for the capital costs of above ground tanks that meet all local environmental, zoning, and fire codes.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Vehicle and Equipment Fueling NS-9
January 2011 California Stormwater BMP Handbook 3 of 3
Construction
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 Immediately clean up spills and properly dispose of contaminated soil and cleanup materials.

Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance, Working Group Working Paper; USEPA, April 1992.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.

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Packet Pg. 324
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Vehicle & Equipment Maintenance NS-10
January 2011 California Stormwater BMP Handbook 1 of 4
Construction
www.casqa.org
Description and Purpose
Prevent or reduce the contamination of stormwater resulting from vehicle and equipment maintenance by running a “dry and clean site”. The best option would be to perform
maintenance activities at an offsite facility. If this option is not available then work should be performed in designated areas only, while providing cover for materials stored outside, checking for leaks and spills, and containing and cleaning up spills immediately. Employees and subcontractors must be trained in proper procedures.

Suitable Applications
These procedures are suitable on all construction projects where an onsite yard area is necessary for storage and
maintenance of heavy equipment and vehicles.

Limitations
Onsite vehicle and equipment maintenance should only be used where it is impractical to send vehicles and equipment offsite for maintenance and repair. Sending vehicles/equipment offsite should be done in conjunction with TC-1, Stabilized Construction Entrance/Exit.

Outdoor vehicle or equipment maintenance is a potentially significant source of stormwater pollution. Activities that can contaminate stormwater include engine repair and service, changing or replacement of fluids, and outdoor equipment storage and parking (engine fluid leaks). For further
information on vehicle or equipment servicing, see NS-8, Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment
Nutrients 
Trash 
Metals
Bacteria
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 325
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Vehicle & Equipment Maintenance NS-10
January 2011 California Stormwater BMP Handbook 2 of 4
Construction
www.casqa.org
Vehicle and Equipment Cleaning, and NS-9, Vehicle and Equipment Fueling.

Implementation
 Use offsite repair shops as much as possible. These businesses are better equipped to handle vehicle fluids and spills properly. Performing this work offsite can also be economical by eliminating the need for a separate maintenance area.
 If maintenance must occur onsite, use designated areas, located away from drainage courses.

Dedicated maintenance areas should be protected from stormwater runon and runoff, and should be located at least 50 ft from downstream drainage facilities and watercourses.  Drip pans or absorbent pads should be used during vehicle and equipment maintenance work that involves fluids, unless the maintenance work is performed over an impermeable surface in a dedicated maintenance area.
 Place a stockpile of spill cleanup materials where it will be readily accessible.  All fueling trucks and fueling areas are required to have spill kits and/or use other spill protection devices.
 Use adsorbent materials on small spills. Remove the absorbent materials promptly and dispose of properly.
 Inspect onsite vehicles and equipment daily at startup for leaks, and repair immediately.  Keep vehicles and equipment clean; do not allow excessive build-up of oil and grease.  Segregate and recycle wastes, such as greases, used oil or oil filters, antifreeze, cleaning solutions, automotive batteries, hydraulic and transmission fluids. Provide secondary containment and covers for these materials if stored onsite.  Train employees and subcontractors in proper maintenance and spill cleanup procedures.  Drip pans or plastic sheeting should be placed under all vehicles and equipment placed on docks, barges, or other structures over water bodies when the vehicle or equipment is planned to be idle for more than 1 hour.
 For long-term projects, consider using portable tents or covers over maintenance areas if maintenance cannot be performed offsite.
 Consider use of new, alternative greases and lubricants, such as adhesive greases, for chassis lubrication and fifth-wheel lubrication.
 Properly dispose of used oils, fluids, lubricants, and spill cleanup materials.  Do not place used oil in a dumpster or pour into a storm drain or watercourse.  Properly dispose of or recycle used batteries.
 Do not bury used tires.

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January 2011 California Stormwater BMP Handbook 3 of 4
Construction
www.casqa.org
 Repair leaks of fluids and oil immediately.

Listed below is further information if you must perform vehicle or equipment maintenance onsite.

Safer Alternative Products
 Consider products that are less toxic or hazardous than regular products. These products are often sold under an “environmentally friendly” label.  Consider use of grease substitutes for lubrication of truck fifth-wheels. Follow manufacturers label for details on specific uses.
 Consider use of plastic friction plates on truck fifth-wheels in lieu of grease. Follow manufacturers label for details on specific uses.

Waste Reduction
Parts are often cleaned using solvents such as trichloroethylene, trichloroethane, or methylene chloride. Many of these cleaners are listed in California Toxic Rule as priority pollutants. These materials are harmful and must not contaminate stormwater. They must be disposed of as a hazardous waste. Reducing the number of solvents makes recycling easier and reduces hazardous waste management costs. Often, one solvent can perform a job as well as two different solvents. Also, if possible, eliminate or reduce the amount of hazardous materials and waste by substituting non-hazardous or less hazardous materials. For example, 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 the list of active ingredients to see whether it contains chlorinated solvents. The “chlor” term indicates that the solvent is chlorinated. Also, try substituting a wire brush for solvents to clean parts.

Recycling and Disposal
Separating wastes allows for easier recycling and may reduce disposal costs. Keep hazardous wastes separate, do not mix used oil solvents, and keep chlorinated solvents (like,- trichloroethane) separate from non-chlorinated solvents (like kerosene and mineral spirits).

Promptly transfer used fluids to the proper waste or recycling drums. Don’t leave full drip pans or other open containers lying around. Provide cover and secondary containment until these materials can be removed from the site.

Oil filters can be recycled. Ask your oil supplier or recycler about recycling oil filters.

Do not dispose of extra paints and coatings by dumping liquid onto the ground or throwing it into dumpsters. Allow coatings to dry or harden before disposal into covered dumpsters.

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.

Costs
All of the above are low cost measures. Higher costs are incurred to setup and maintain onsite maintenance areas.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Vehicle & Equipment Maintenance NS-10
January 2011 California Stormwater BMP Handbook 4 of 4
Construction
www.casqa.org
Inspection and Maintenance
 Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.  Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur.
 Keep ample supplies of spill cleanup materials onsite.  Maintain waste fluid containers in leak proof condition.  Vehicles and equipment should be inspected on each day of use. Leaks should be repaired immediately or the problem vehicle(s) or equipment should be removed from the project site.
 Inspect equipment for damaged hoses and leaky gaskets routinely. Repair or replace as needed.

Coastal Nonpoint Pollution Control Program; Program Development and Approval Guidance, Working Group, Working Paper; USEPA, April 1992.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

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Packet Pg. 328
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Concrete Curing NS-12
July 2012 California Stormwater BMP Handbook 1 of 3
Construction
www.casqa.org
Description and Purpose
Concrete curing is used in the construction of structures such as bridges, retaining walls, pump houses, large slabs, and structured foundations. Concrete curing includes the use of both chemical and water methods.

Concrete and its associated curing materials have basic chemical properties that can raise the pH of water to levels outside of the permitted range. Discharges of stormwater and non-stormwater exposed to concrete during curing may have a high pH and may contain chemicals, metals, and fines. The General Permit incorporates Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project’s risk level and if you are subject to these requirements).

Proper procedures and care should be taken when managing concrete curing materials to prevent them from coming into contact with stormwater flows, which could result in a high pH discharge.

Suitable Applications
Suitable applications include all projects where Portland Cement Concrete (PCC) and concrete curing chemicals are placed where they can be exposed to rainfall, runoff from other areas, or where runoff from the PCC will leave the site.

Limitations
 Runoff contact with concrete waste can raise pH levels in the water to environmentally harmful levels and trigger permit violations.

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash
Metals 
Bacteria
Oil and Grease 
Organics

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 329
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Concrete Curing NS-12
July 2012 California Stormwater BMP Handbook 2 of 3
Construction
www.casqa.org
Implementation
Chemical Curing
 Avoid over spray of curing compounds.
 Minimize the drift by applying the curing compound close to the concrete surface. Apply an amount of compound that covers the surface, but does not allow any runoff of the compound.
 Use proper storage and handling techniques for concrete curing compounds. Refer to WM- 1, Material Delivery and Storage.
 Protect drain inlets prior to the application of curing compounds.  Refer to WM-4, Spill Prevention and Control.

Water Curing for Bridge Decks, Retaining Walls, and other Structures  Direct cure water away from inlets and watercourses to collection areas for evaporation or other means of removal in accordance with all applicable permits. See WM-8 Concrete Waste Management.
 Collect cure water at the top of slopes and transport to a concrete waste management area in a non-erosive manner. See EC-9 Earth Dikes and Drainage Swales, EC-10, Velocity Dissipation Devices, and EC-11, Slope Drains.
 Utilize wet blankets or a similar method that maintains moisture while minimizing the use and possible discharge of water.

Education
 Educate employees, subcontractors, and suppliers on proper concrete curing techniques to prevent contact with discharge as described herein.
 Arrange for the QSP or the appropriately trained contractor’s superintendent or representative to oversee and enforce concrete curing procedures.

Costs
All of the above measures are generally low cost.

Inspection and Maintenance
 Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities.
 BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges occur.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Concrete Curing NS-12
July 2012 California Stormwater BMP Handbook 3 of 3
Construction
www.casqa.org
 Sample non-stormwater discharges and stormwater runoff that contacts uncured and partially cured concrete as required by the General Permit.  Ensure that employees and subcontractors implement appropriate measures for storage, handling, and use of curing compounds.
 Inspect cure containers and spraying equipment for leaks.

References
Blue Print for a Clean Bay-Construction-Related Industries: Best Management Practices for Stormwater Pollution Prevention; Santa Clara Valley Non Point Source Pollution Control Program, 1992.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.

Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Concrete Finishing NS-13
July 2012 California Stormwater BMP Handbook 1 of 3
Construction
www.casqa.org
Description and Purpose
Concrete finishing methods are used for bridge deck
rehabilitation, paint removal, curing compound removal, and final surface finish appearances. Methods include sand blasting, shot blasting, grinding, or high pressure water blasting. Stormwater and non-stormwater exposed to concrete finishing by-products may have a high pH and may contain chemicals, metals, and fines. Proper procedures and
implementation of appropriate BMPs can minimize the impact that concrete-finishing methods may have on stormwater and non-stormwater discharges.

The General Permit incorporates Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project’s risk level and if you are subject to these requirements).

Concrete and its associated curing materials have basic chemical properties that can raise pH levels outside of the permitted range. Additional care should be taken when
managing these materials to prevent them from coming into contact with stormwater flows, which could lead to exceedances of the General Permit requirements.

Suitable Applications
These procedures apply to all construction locations where concrete finishing operations are performed.

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash
Metals 
Bacteria
Oil and Grease
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 332
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Concrete Finishing NS-13
July 2012 California Stormwater BMP Handbook 2 of 3
Construction
www.casqa.org
Limitations
 Runoff contact with concrete waste can raise pH levels in the water to environmentally harmful levels and trigger permit violations.

Implementation
 Collect and properly dispose of water from high-pressure water blasting operations.  Collect contaminated water from blasting operations at the top of slopes. Transport or dispose of contaminated water while using BMPs such as those for erosion control. Refer to EC-9, Earth Dikes and Drainage Swales, EC-10, Velocity Dissipation Devices, and EC-11, Slope Drains.
 Direct water from blasting operations away from inlets and watercourses to collection areas for infiltration or other means of removal (dewatering). Refer to NS-2 Dewatering Operations.
 Protect inlets during sandblasting operations. Refer to SE-10, Storm Drain Inlet Protection.  Refer to WM-8, Concrete Waste Management for disposal of concrete debris.  Minimize the drift of dust and blast material as much as possible by keeping the blasting nozzle close to the surface.
 When blast residue contains a potentially hazardous waste, refer to WM-6, Hazardous Waste Management.

Education
 Educate employees, subcontractors, and suppliers on proper concrete finishing techniques to prevent contact with discharge as described herein.
 Arrange for the QSP or the appropriately trained contractor’s superintendent or representative to oversee and enforce concrete finishing procedures.

Costs
These measures are generally of low cost.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Concrete Finishing NS-13
July 2012 California Stormwater BMP Handbook 3 of 3
Construction
www.casqa.org
 Sweep or vacuum up debris from sandblasting at the end of each shift.  At the end of each work shift, remove and contain liquid and solid waste from containment structures, if any, and from the general work area.
 Inspect containment structures for damage prior to use and prior to onset of forecasted rain.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD)

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Gravel Bag Berm SE-6
May 2011 California Stormwater BMP Handbook Portal 1 of 4 Construction
www.casqa.org

Description and Purpose
A gravel bag berm is a series of gravel-filled bags placed on a level contour to intercept sheet flows. Gravel bags pond sheet flow runoff, allowing sediment to settle out, and release runoff slowly as sheet flow, preventing erosion.

Suitable Applications
Gravel bag berms may be suitable:
 As a linear sediment control measure:
Below the toe of slopes and erodible slopes
As sediment traps at culvert/pipe outlets
Below other small cleared areas
Along the perimeter of a site
Down slope of exposed soil areas
Around temporary stockpiles and spoil areas
Parallel to a roadway to keep sediment off paved areas Along streams and channels
 As a linear erosion control measure:
- Along the face and at grade breaks of exposed and
erodible slopes to shorten slope length and spread
runoff as sheet flow.

Categories
EC Erosion Control 
SE Sediment Control 
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics

Potential Alternatives
SE-1 Silt Fence
SE-5 Fiber Roll
SE-8 Sandbag Barrier
SE-12 Temporary Silt Dike
SE-14 Biofilter Bags
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 345
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Gravel Bag Berm SE-6
May 2011 California Stormwater BMP Handbook Portal 2 of 4 Construction
www.casqa.org
At the top of slopes to divert runoff away from disturbed slopes. As chevrons (small check dams) across mildly sloped construction roads. For use check dam use in channels, see SE-4, Check Dams.

Limitations
 Gravel berms may be difficult to remove.
 Removal problems limit their usefulness in landscaped areas.  Gravel bag berm may not be appropriate for drainage areas greater than 5 acres.  Runoff will pond upstream of the berm, possibly causing flooding if sufficient space does not exist.
 Degraded gravel bags may rupture when removed, spilling contents.  Installation can be labor intensive.
 Durability of gravel bags is somewhat limited and bags may need to be replaced when installation is required for longer than 6 months.
 Easily damaged by construction equipment.
 When used to detain concentrated flows, maintenance requirements increase.

Implementation
General
A gravel bag berm consists of a row of open graded gravel-filled bags placed on a level contour.

When appropriately placed, a gravel bag berm intercepts and slows sheet flow runoff, causing temporary ponding. The temporary ponding allows sediment to settle. The open graded gravel in the bags is porous, which allows the ponded runoff to flow slowly through the bags, releasing the runoff as sheet flows. Gravel bag berms also interrupt the slope length and thereby reduce erosion by reducing the tendency of sheet flows to concentrate into rivulets, which erode rills, and ultimately gullies, into disturbed, sloped soils. Gravel bag berms are similar to sand bag barriers, but are more porous. Generally, gravel bag berms should be used in conjunction with temporary soil stabilization controls up slope to provide effective erosion and sediment control.

Design and Layout
 Locate gravel bag berms on level contours.
 When used for slope interruption, the following slope/sheet flow length combinations apply:
Slope inclination of 4:1 (H:V) or flatter: Gravel bags should be placed at a maximum interval of 20 ft, with the first row near the slope toe. Slope inclination between 4:1 and 2:1 (H:V): Gravel bags should be placed at a maximum interval of 15 ft. (a closer spacing is more effective), with the first row near the slope toe.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Gravel Bag Berm SE-6
May 2011 California Stormwater BMP Handbook Portal 3 of 4 Construction
www.casqa.org
Slope inclination 2:1 (H:V) or greater: Gravel bags should be placed at a maximum interval of 10 ft. (a closer spacing is more effective), with the first row near the slope toe.  Turn the ends of the gravel bag barriers up slope to prevent runoff from going around the berm.
 Allow sufficient space up slope from the gravel bag berm to allow ponding, and to provide room for sediment storage.
 For installation near the toe of the slope, gravel bag barriers should be set back from the slope toe to facilitate cleaning. Where specific site conditions do not allow for a set-back, the gravel bag barrier may be constructed on the toe of the slope. To prevent flows behind the barrier, bags can be placed perpendicular to a berm to serve as cross barriers.  Drainage area should not exceed 5 acres.
 In Non-Traffic Areas:
Height = 18 in. maximum
Top width = 24 in. minimum for three or more layer construction Top width = 12 in. minimum for one or two layer construction Side slopes = 2:1 (H:V) or flatter
 In Construction Traffic Areas:
Height = 12 in. maximum
Top width = 24 in. minimum for three or more layer construction. Top width = 12 in. minimum for one or two layer construction. Side slopes = 2:1 (H:V) or flatter.
 Butt ends of bags tightly.
 On multiple row, or multiple layer construction, overlap butt joints of adjacent row and row beneath.
 Use a pyramid approach when stacking bags.

Materials
 Bag Material: Bags should be woven polypropylene, polyethylene or polyamide fabric or burlap, minimum unit weight of 4 ounces/yd2, Mullen burst strength exceeding 300 lb/in2 in conformance with the requirements in ASTM designation D3786, and ultraviolet stability exceeding 70% in conformance with the requirements in ASTM designation D4355.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Gravel Bag Berm SE-6
May 2011 California Stormwater BMP Handbook Portal 4 of 4 Construction
www.casqa.org
 Bag Size: Each gravel-filled bag should have a length of 18 in., width of 12 in., thickness of 3 in., and mass of approximately 33 lbs. Bag dimensions are nominal, and may vary based on locally available materials.
 Fill Material: Fill material should be 0.5 to 1 in. crushed rock, clean and free from clay, organic matter, and other deleterious material, or other suitable open graded, non-cohesive, porous gravel.

Costs
Material costs for gravel bags are average and are dependent upon material availability. $2.50-

3.00 per filled gravel bag is standard based upon vendor research.

Inspection and Maintenance
 BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Gravel bags exposed to sunlight will need to be replaced every two to three months due to degrading of the bags.
 Reshape or replace gravel bags as needed.
 Repair washouts or other damage as needed.
 Sediment that accumulates in the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height.
 Remove gravel bag berms when no longer needed and recycle gravel fill whenever possible and properly dispose of bag material. Remove sediment accumulation and clean, re-grade, and stabilize the area.

References
Handbook of Steel Drainage and Highway Construction, American Iron and Steel Institute, 1983.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Stormwater Pollution Plan Handbook, First Edition, State of California, Department of Transportation Division of New Technology, Materials and Research, October 1992.

Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005.

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Packet Pg. 348
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Street Sweeping and Vacuuming SE-7
January 2011 California Stormwater BMP Handbook 1 of 2
Construction
www.casqa.org
Description and Purpose
Street sweeping and vacuuming includes use of self-propelled and walk-behind equipment to remove sediment from streets and roadways, and to clean paved surfaces in preparation for final paving. Sweeping and vacuuming prevents sediment from the project site from entering storm drains or receiving waters.

Suitable Applications
Sweeping and vacuuming are suitable anywhere sediment is tracked from the project site onto public or private paved streets and roads, typically at points of egress. Sweeping and vacuuming are also applicable during preparation of paved surfaces for final paving.

Limitations
Sweeping and vacuuming may not be effective when sediment is wet or when tracked soil is caked (caked soil may need to be scraped loose).

Implementation
 Controlling the number of points where vehicles can leave the site will allow sweeping and vacuuming efforts to be focused, and perhaps save money.
 Inspect potential sediment tracking locations daily.
 Visible sediment tracking should be swept or vacuumed on a daily basis.

Categories
EC Erosion Control
SE Sediment Control 
TC Tracking Control 
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment 
Nutrients
Trash 
Metals
Bacteria
Oil and Grease 
Organics

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 349
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Street Sweeping and Vacuuming SE-7
January 2011 California Stormwater BMP Handbook 2 of 2
Construction
www.casqa.org
 Do not use kick brooms or sweeper attachments. These tend to spread the dirt rather than remove it.
 If not mixed with debris or trash, consider incorporating the removed sediment back into the project
Costs
Rental rates for self-propelled sweepers vary depending on hopper size and duration of rental.

Expect rental rates from $58/hour (3 yd3 hopper) to $88/hour (9 yd3 hopper), plus operator costs. Hourly production rates vary with the amount of area to be swept and amount of sediment. Match the hopper size to the area and expect sediment load to minimize time spent dumping.

Inspection and Maintenance
 Inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 When actively in use, points of ingress and egress must be inspected daily.  When tracked or spilled sediment is observed outside the construction limits, it must be removed at least daily. More frequent removal, even continuous removal, may be required in some jurisdictions.
 Be careful not to sweep up any unknown substance or any object that may be potentially hazardous.
 Adjust brooms frequently; maximize efficiency of sweeping operations.  After sweeping is finished, properly dispose of sweeper wastes at an approved dumpsite.

References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Labor Surcharge and Equipment Rental Rates, State of California Department of Transportation (Caltrans), April 1, 2002 – March 31, 2003.

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Packet Pg. 350
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Sandbag Barrier SE-8
July 2012 California Stormwater BMP Handbook Portal 1 of 6 Construction
www.casqa.org
Description and Purpose
A sandbag barrier is a series of sand-filled bags placed on a level contour to intercept or to divert sheet flows. Sandbag barriers placed on a level contour pond sheet flow runoff, allowing sediment to settle out.

Suitable Applications
Sandbag barriers may be a suitable control measure for the applications described below. It is important to consider that sand bags are less porous than gravel bags and ponding or flooding can occur behind the barrier. Also, sand is easily transported by runoff if bags are damaged or ruptured. The SWPPP Preparer should select the location of a sandbag barrier with respect to the potential for flooding, damage, and the ability to maintain the BMP.
 As a linear sediment control measure:
Below the toe of slopes and erodible slopes.
As sediment traps at culvert/pipe outlets.
Below other small cleared areas.
Along the perimeter of a site.
Down slope of exposed soil areas.
Around temporary stockpiles and spoil areas.
Parallel to a roadway to keep sediment off paved areas. Along streams and channels.

Potential Alternatives
SE-1 Silt Fence
SE-5 Fiber Rolls
SE-6 Gravel Bag Berm
SE-12 Manufactured Linear
Sediment Controls
SE-14 Biofilter Bags
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 As linear erosion control measure:
Along the face and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow.
At the top of slopes to divert runoff away from disturbed slopes. As check dams across mildly sloped construction roads.

Limitations
 It is necessary to limit the drainage area upstream of the barrier to 5 acres.  Sandbags are not intended to be used as filtration devices.  Easily damaged by construction equipment.
 Degraded sandbags may rupture when removed, spilling sand.  Installation can be labor intensive.
 Durability of sandbags is somewhat limited and bags will need to be replaced when there are signs of damage or wear.
 Burlap should not be used for sandbags.

Implementation
General
A sandbag barrier consists of a row of sand-filled bags placed on a level contour. When appropriately placed, a sandbag barrier intercepts and slows sheet flow runoff, causing temporary ponding. The temporary ponding allows sediment to settle. Sand-filled bags have limited porosity, which is further limited as the fine sand tends to quickly plug with sediment, limiting or completely blocking the rate of flow through the barrier. If a porous barrier is desired, consider SE-1, Silt Fence, SE-5, Fiber Rolls, SE-6, Gravel Bag Berms or SE-14, Biofilter Bags. Sandbag barriers also interrupt the slope length and thereby reduce erosion by reducing the tendency of sheet flows to concentrate into rivulets which erode rills, and ultimately gullies, into disturbed, sloped soils. Sandbag barriers are similar to gravel bag berms, but less porous.

Generally, sandbag barriers should be used in conjunction with temporary soil stabilization controls up slope to provide effective erosion and sediment control.

Design and Layout
 Locate sandbag barriers on a level contour.
 When used for slope interruption, the following slope/sheet flow length combinations apply:
Slope inclination of 4:1 (H:V) or flatter: Sandbags should be placed at a maximum interval of 20 ft, with the first row near the slope toe. Slope inclination between 4:1 and 2:1 (H:V): Sandbags should be placed at a maximum interval of 15 ft. (a closer spacing is more effective), with the first row near the slope toe.

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Slope inclination 2:1 (H:V) or greater: Sandbags should be placed at a maximum interval of 10 ft. (a closer spacing is more effective), with the first row near the slope toe.  Turn the ends of the sandbag barrier up slope to prevent runoff from going around the barrier.
 Allow sufficient space up slope from the barrier to allow ponding, and to provide room for sediment storage.
 For installation near the toe of the slope, sand bag barriers should be set back from the slope toe to facilitate cleaning. Where specific site conditions do not allow for a set-back, the sand bag barrier may be constructed on the toe of the slope. To prevent flows behind the barrier, bags can be placed perpendicular to a berm to serve as cross barriers.  Drainage area should not exceed 5 acres.
 Butt ends of bags tightly.
 Overlap butt joints of row beneath with each successive row.  Use a pyramid approach when stacking bags.
 In non-traffic areas
Height = 18 in. maximum
Top width = 24 in. minimum for three or more layer construction Side slope = 2:1 (H:V) or flatter
 In construction traffic areas
Height = 12 in. maximum
Top width = 24 in. minimum for three or more layer construction. Side slopes = 2:1 (H:V) or flatter.
 See typical sandbag barrier installation details at the end of this fact sheet.

Materials
 Sandbag Material: Sandbag should be woven polypropylene, polyethylene or polyamide fabric, minimum unit weight of 4 ounces/yd2, Mullen burst strength exceeding 300 lb/in2 in conformance with the requirements in ASTM designation D3786, and ultraviolet stability exceeding 70% in conformance with the requirements in ASTM designation D4355. Use of burlap is not an acceptable substitute, as sand can more easily mobilize out of burlap.  Sandbag Size: Each sand-filled bag should have a length of 18 in., width of 12 in., thickness of 3 in., and mass of approximately 33 lbs. Bag dimensions are nominal, and may vary based on locally available materials.

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 Fill Material: All sandbag fill material should be non-cohesive, Class 3 (Caltrans Standard Specification, Section 25) or similar permeable material free from clay and deleterious material, such as recycled concrete or asphalt.

Costs
Empty sandbags cost $0.25 - $0.75. Average cost of fill material is $8 per yd3. Additional labor is required to fill the bags. Pre-filled sandbags are more expensive at $1.50 - $2.00 per bag.

These costs are based upon vendor research.

Inspection and Maintenance
 BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Sandbags exposed to sunlight will need to be replaced every two to three months due to degradation of the bags.
 Reshape or replace sandbags as needed.
 Repair washouts or other damage as needed.
 Sediment that accumulates behind the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height.
 Remove sandbags when no longer needed and recycle sand fill whenever possible and properly dispose of bag material. Remove sediment accumulation, and clean, re-grade, and stabilize the area.

References
Standard Specifications for Construction of Local Streets and Roads, California Department of Transportation (Caltrans), July 2002.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005.

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Description and Purpose
Storm drain inlet protection consists of a sediment filter or an impounding area in, around or upstream of a storm drain, drop inlet, or curb inlet. Storm drain inlet protection measures temporarily pond runoff before it enters the storm drain, allowing sediment to settle. Some filter configurations also remove sediment by filtering, but usually the ponding action results in the greatest sediment reduction. Temporary
geotextile storm drain inserts attach underneath storm drain grates to capture and filter storm water.

Suitable Applications
 Every storm drain inlet receiving runoff from unstabilized or otherwise active work areas should be protected. Inlet protection should be used in conjunction with other erosion and sediment controls to prevent sediment-laden
stormwater and non-stormwater discharges from entering
the storm drain system.

Limitations
 Drainage area should not exceed 1 acre.
 In general straw bales should not be used as inlet
protection.
 Requires an adequate area for water to pond without
encroaching into portions of the roadway subject to traffic.  Sediment removal may be inadequate to prevent sediment discharges in high flow conditions or if runoff is heavily sediment laden. If high flow conditions are expected, use Categories
EC Erosion Control
SE Sediment Control 
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash 
Metals
Bacteria
Oil and Grease
Organics

Potential Alternatives
SE-1 Silt Fence
SE-5 Fiber Rolls
SE-6 Gravel Bag Berm
SE-8 Sandbag Barrier
SE-14 Biofilter Bags
SE-13 Compost Socks and Berms
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
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other onsite sediment trapping techniques in conjunction with inlet protection.  Frequent maintenance is required.
 Limit drainage area to 1 acre maximum. For drainage areas larger than 1 acre, runoff should be routed to a sediment-trapping device designed for larger flows. See BMPs SE-2, Sediment Basin, and SE-3, Sediment Traps.
 Excavated drop inlet sediment traps are appropriate where relatively heavy flows are expected, and overflow capability is needed.

Implementation
General
Inlet control measures presented in this handbook should not be used for inlets draining more than one acre. Runoff from larger disturbed areas should be first routed through SE-2, Sediment Basin or SE-3, Sediment Trap and/or used in conjunction with other drainage control, erosion control, and sediment control BMPs to protect the site. Different types of inlet protection are appropriate for different applications depending on site conditions and the type of inlet. Alternative methods are available in addition to the methods described/shown herein such as prefabricated inlet insert devices, or gutter protection devices.

Design and Layout
Identify existing and planned storm drain inlets that have the potential to receive sediment- laden surface runoff. Determine if storm drain inlet protection is needed and which method to use.
 The key to successful and safe use of storm drain inlet protection devices is to know where runoff that is directed toward the inlet to be protected will pond or be diverted as a result of installing the protection device.
Determine the acceptable location and extent of ponding in the vicinity of the drain inlet.

The acceptable location and extent of ponding will influence the type and design of the storm drain inlet protection device.
Determine the extent of potential runoff diversion caused by the storm drain inlet protection device. Runoff ponded by inlet protection devices may flow around the device and towards the next downstream inlet. In some cases, this is acceptable; in other cases, serious erosion or downstream property damage can be caused by these diversions. The possibility of runoff diversions will influence whether or not storm drain inlet protection is suitable; and, if suitable, the type and design of the device.  The location and extent of ponding, and the extent of diversion, can usually be controlled through appropriate placement of the inlet protection device. In some cases, moving the inlet protection device a short distance upstream of the actual inlet can provide more efficient sediment control, limit ponding to desired areas, and prevent or control diversions.  Seven types of inlet protection are presented below. However, it is recognized that other effective methods and proprietary devices exist and may be selected.

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Silt Fence: Appropriate for drainage basins with less than a 5% slope, sheet flows, and flows under 0.5 cfs.
Excavated Drop Inlet Sediment Trap: An excavated area around the inlet to trap sediment (SE-3).
Gravel bag barrier: Used to create a 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.
Block and Gravel Filter: Appropriate for flows greater than 0.5 cfs. Temporary Geotextile Storm drain Inserts: Different products provide different features.

Refer to manufacturer details for targeted pollutants and additional features. Biofilter Bag Barrier: Used to create a small retention area upstream of inlets and can be located on pavement or soil. Biofilter bags slowly filter runoff allowing sediment to settle out. Appropriate for flows under 0.5 cfs.
Compost Socks: Allow filtered run-off to pass through the compost while retaining sediment and potentially other pollutants (SE-13). Appropriate for flows under 1.0 cfs.  Select the appropriate type of inlet protection and design as referred to or as described in this fact sheet.
 Provide area around the inlet for water to pond without flooding structures and property.  Grates and spaces around all inlets should be sealed to prevent seepage of sediment-laden water.
 Excavate sediment sumps (where needed) 1 to 2 ft with 2:1 side slopes around the inlet.

Installation
 DI Protection Type 1 - Silt Fence - Similar to constructing a silt fence; see BMP SE-1, Silt Fence. Do not place fabric underneath the inlet grate since the collected sediment may fall into the drain inlet when the fabric is removed or replaced and water flow through the grate will be blocked resulting in flooding. See typical Type 1 installation details at the end of this fact sheet.

1. Excavate a trench approximately 6 in. wide and 6 in. deep along the line of the silt fence inlet protection device.

2. Place 2 in. by 2 in. wooden stakes around the perimeter of the inlet a maximum of 3 ft apart and drive them at least 18 in. into the ground or 12 in. below the bottom of the trench. The stakes should be at least 48 in.

3. Lay fabric along bottom of trench, up side of trench, and then up stakes. See SE-1, Silt Fence, for details. The maximum silt fence height around the inlet is 24 in.

4. Staple the filter fabric (for materials and specifications, see SE-1, Silt Fence) to wooden stakes. Use heavy-duty wire staples at least 1 in. in length.

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5. Backfill the trench with gravel or compacted earth all the way around.  DI Protection Type 2 - Excavated Drop Inlet Sediment Trap - Install filter fabric fence in accordance with DI Protection Type 1. Size excavated trap to provide a minimum storage capacity calculated at the rate 67 yd3/acre of drainage area. See typical Type 2 installation details at the end of this fact sheet.
 DI Protection Type 3 - Gravel bag - Flow from a severe storm should not overtop the curb. In areas of high clay and silts, use filter fabric and gravel as additional filter media.

Construct gravel bags in accordance with SE-6, Gravel Bag Berm. Gravel bags should be used due to their high permeability. See typical Type 3 installation details at the end of this fact sheet.

1. Construct on gently sloping street.

2. Leave room upstream of barrier for water to pond and sediment to settle.

3. Place several layers of gravel bags – overlapping the bags and packing them tightly together.

4. Leave gap of one bag on the top row to serve as a spillway. Flow from a severe storm (e.g., 10 year storm) should not overtop the curb.
 DI Protection Type 4 – Block and Gravel Filter - Block and gravel filters are suitable for curb inlets commonly used in residential, commercial, and industrial construction. See typical Type 4 installation details at the end of this fact sheet.

1. Place hardware cloth or comparable wire mesh with 0.5 in. openings over the drop inlet so that the wire extends a minimum of 1 ft beyond each side of the inlet structure. If more than one strip is necessary, overlap the strips. Place woven geotextile over the wire mesh.

2. Place concrete blocks lengthwise on their sides in a single row around the perimeter of the inlet, so that the open ends face outward, not upward. The ends of adjacent blocks should abut. The height of the barrier can be varied, depending on design needs, by stacking combinations of blocks that are 4 in., 8 in., and 12 in. wide. The row of blocks should be at least 12 in. but no greater than 24 in. high.

3. Place wire mesh over the outside vertical face (open end) of the concrete blocks to prevent stone from being washed through the blocks. Use hardware cloth or comparable wire mesh with 0.5 in. opening.

4. Pile washed stone against the wire mesh to the top of the blocks. Use 0.75 to 3 in.  DI Protection Type 5 – Temporary Geotextile Insert (proprietary) – Many types of temporary inserts are available. Most inserts fit underneath the grate of a drop inlet or inside of a curb inlet and are fastened to the outside of the grate or curb. These inserts are removable and many can be cleaned and reused. Installation of these inserts differs between manufacturers. Please refer to manufacturer instruction for installation of proprietary devices.

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 DI Protection Type 6 - Biofilter bags – Biofilter bags may be used as a substitute for gravel bags in low-flow situations. Biofilter bags should conform to specifications detailed in SE-14, Biofilter bags.

1. Construct in a gently sloping area.

2. Biofilter bags should be placed around inlets to intercept runoff flows.

3. All bag joints should overlap by 6 in.

4. Leave room upstream for water to pond and for sediment to settle out.

5. Stake bags to the ground as described in the following detail. Stakes may be omitted if bags are placed on a paved surface.
 DI Protection Type 7 – Compost Socks – A compost sock can be assembled on site by filling a mesh sock (e.g., with a pneumatic blower). Compost socks do not require special trenching compared to other sediment control methods (e.g., silt fence). Compost socks should conform to specification detailed in SE-13, Compost Socks and Berms.

Costs
 Average annual cost for installation and maintenance of DI Type 1-4 and 6 (one year useful life) is $200 per inlet.
 Temporary geotextile inserts are proprietary and cost varies by region. These inserts can often be reused and may have greater than 1 year of use if maintained and kept undamaged.

Average cost per insert ranges from $50-75 plus installation, but costs can exceed $100.

This cost does not include maintenance.
 See SE-13 for Compost Sock cost information.

Inspection and Maintenance
 BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Silt Fences. If the fabric becomes clogged, torn, or degrades, it should be replaced. Make sure the stakes are securely driven in the ground and are in good shape (i.e., not bent, cracked, or splintered, and are reasonably perpendicular to the ground). Replace damaged stakes. At a minimum, remove the sediment behind the fabric fence when accumulation reaches one-third the height of the fence or barrier height.  Gravel Filters. If the gravel becomes clogged with sediment, it should be carefully removed from the inlet and either cleaned or replaced. Since cleaning gravel at a construction site may be difficult, consider using the sediment-laden stone as fill material and put fresh stone around the inlet. Inspect bags for holes, gashes, and snags, and replace bags as needed.

Check gravel bags for proper arrangement and displacement.

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 Sediment that accumulates in the BMP should be periodically removed in order to maintain BMP effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the barrier height.
 Inspect and maintain temporary geotextile insert devices according to manufacturer’s specifications.
 Remove storm drain inlet protection once the drainage area is stabilized. Clean and regrade area around the inlet and clean the inside of the storm drain inlet, as it should be free of sediment and debris at the time of final inspection.

References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Stormwater Management Manual for The Puget Sound Basin, Washington State Department of Ecology, Public Review Draft, 1991.

Erosion and Sediment Control Manual, Oregon Department of Environmental Quality, February 2005.

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Gravel bags
Gravel bags

6. Protection can be effective even if it is not immediately adjacent to the inlet provided that the inlet is protected from potential sources of pollution.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Stabilized Construction Entrance/Exit TC-1
July 2012 California Stormwater BMP Handbook 1 of 6
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Description and Purpose
A stabilized construction access is defined by a point of entrance/exit to a construction site that is stabilized to reduce the tracking of mud and dirt onto public roads by construction vehicles.

Suitable Applications
Use at construction sites:
 Where dirt or mud can be tracked onto public roads.
 Adjacent to water bodies.
 Where poor soils are encountered.
 Where dust is a problem during dry weather conditions.

Limitations
 Entrances and exits require periodic top dressing with additional stones.
 This BMP should be used in conjunction with street
sweeping on adjacent public right of way.
 Entrances and exits should be constructed on level ground only.
 Stabilized construction entrances are rather expensive to construct and when a wash rack is included, a sediment trap of some kind must also be provided to collect wash water runoff.

Categories
EC Erosion Control 
SE Sediment Control 
TC Tracking Control 
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment 
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Stabilized Construction Entrance/Exit TC-1
July 2012 California Stormwater BMP Handbook 2 of 6
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Implementation
General
A stabilized construction entrance is a pad of aggregate underlain with filter cloth located at any point where traffic will be entering or leaving a construction site to or from a public right of way, street, alley, sidewalk, or parking area. The purpose of a stabilized construction entrance is to reduce or eliminate the tracking of sediment onto public rights of way or streets. Reducing tracking of sediments and other pollutants onto paved roads helps prevent deposition of sediments into local storm drains and production of airborne dust.

Where traffic will be entering or leaving the construction site, a stabilized construction entrance should be used. NPDES permits require that appropriate measures be implemented to prevent tracking of sediments onto paved roadways, where a significant source of sediments is derived from mud and dirt carried out from unpaved roads and construction sites.

Stabilized construction entrances are moderately effective in removing sediment from equipment leaving a construction site. The entrance should be built on level ground.

Advantages of the Stabilized Construction Entrance/Exit is that it does remove some sediment from equipment and serves to channel construction traffic in and out of the site at specified locations. Efficiency is greatly increased when a washing rack is included as part of a stabilized construction entrance/exit.

Design and Layout
 Construct on level ground where possible.
 Select 3 to 6 in. diameter stones.
 Use minimum depth of stones of 12 in. or as recommended by soils engineer.  Construct length of 50 ft or maximum site will allow, and 10 ft minimum width or to accommodate traffic.
 Rumble racks constructed of steel panels with ridges and installed in the stabilized entrance/exit will help remove additional sediment and to keep adjacent streets clean.  Provide ample turning radii as part of the entrance.
 Limit the points of entrance/exit to the construction site.  Limit speed of vehicles to control dust.
 Properly grade each construction entrance/exit to prevent runoff from leaving the construction site.
 Route runoff from stabilized entrances/exits through a sediment trapping device before discharge.
 Design stabilized entrance/exit to support heaviest vehicles and equipment that will use it.

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 Select construction access stabilization (aggregate, asphaltic concrete, concrete) based on longevity, required performance, and site conditions. Do not use asphalt concrete (AC) grindings for stabilized construction access/roadway.
 If aggregate is selected, place crushed aggregate over geotextile fabric to at least 12 in. depth, or place aggregate to a depth recommended by a geotechnical engineer. A crushed aggregate greater than 3 in. but smaller than 6 in. should be used.  Designate combination or single purpose entrances and exits to the construction site.  Require that all employees, subcontractors, and suppliers utilize the stabilized construction access.
 Implement SE-7, Street Sweeping and Vacuuming, as needed.  All exit locations intended to be used for more than a two-week period should have stabilized construction entrance/exit BMPs.

Inspection and Maintenance
 Inspect and verify that activity– based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMPs are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.  Inspect local roads adjacent to the site daily. Sweep or vacuum to remove visible accumulated sediment.
 Remove aggregate, separate and dispose of sediment if construction entrance/exit is clogged with sediment.
 Keep all temporary roadway ditches clear.
 Check for damage and repair as needed.
 Replace gravel material when surface voids are visible.  Remove all sediment deposited on paved roadways within 24 hours.  Remove gravel and filter fabric at completion of construction Costs
Average annual cost for installation and maintenance may vary from $1,200 to $4,800 each, averaging $2,400 per entrance. Costs will increase with addition of washing rack, and sediment trap. With wash rack, costs range from $1,200 - $6,000 each, averaging $3,600 per entrance.

References
Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995.

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National Management Measures to Control Nonpoint Source Pollution from Urban Areas, USEPA Agency, 2002.

Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in Coastal Waters, Work Group Working Paper, USEPA, April 1992.

Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992.

Virginia Erosion and Sedimentation Control Handbook, Virginia Department of Conservation and Recreation, Division of Soil and Water Conservation, 1991.

Guidance Specifying Management Measures for Nonpoint Pollution in Coastal Waters, EPA 840-B-9-002, USEPA, Office of Water, Washington, DC, 1993.

Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988.

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50’ T ypical

(1) L ength should be extended to 12 ti m es th e di am eter of the la rge st construction ve hicle tire .
(2) On sma ll site s le ngth should be the ma ximum a llowe d by site .

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50’ T ypical
( 1) L en gth s h ou l d be exten ded to 12 ti m es th e di am eter of the la rge st construction ve hicle tire .
(2) On sma ll site s le ng th should b e the ma ximum a llowed by site.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Entrance/Outlet Tire Wash TC-3
January 2011 California Stormwater BMP Handbook 1 of 3
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Description and Purpose
A tire wash is an area located at stabilized construction access points to remove sediment from tires and under carriages and to prevent sediment from being transported onto public
roadways.

Suitable Applications
Tire washes may be used on construction sites where dirt and mud tracking onto public roads by construction vehicles may occur.

Limitations
 The tire wash requires a supply of wash water.
 A turnout or doublewide exit is required to avoid having entering vehicles drive through the wash area.
 Do not use where wet tire trucks leaving the site leave the road dangerously slick.

Implementation
 Incorporate with a stabilized construction entrance/exit.

See TC-1, Stabilized Construction Entrance/Exit.
 Construct on level ground when possible, on a pad of coarse aggregate greater than 3 in. but smaller than 6 in. A
geotextile fabric should be placed below the aggregate.  Wash rack should be designed and
constructed/manufactured for anticipated traffic loads.

Potential Alternatives
TC-1 Stabilized Construction
Entrance/Exit
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Entrance/Outlet Tire Wash TC-3
January 2011 California Stormwater BMP Handbook 2 of 3
Construction
www.casqa.org
 Provide a drainage ditch that will convey the runoff from the wash area to a sediment trapping device. The drainage ditch should be of sufficient grade, width, and depth to carry the wash runoff.
 Use hoses with automatic shutoff nozzles to prevent hoses from being left on.  Require that all employees, subcontractors, and others that leave the site with mud caked tires and undercarriages to use the wash facility.
 Implement SC-7, Street Sweeping and Vacuuming, as needed.

Costs
Costs are low for installation of wash rack.

Coastal Nonpoint Pollution Control Program; Program Development and Approval Guidance, Working Group, Working Paper; USEPA, April 1992.

Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995.

Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Stormwater Management for Construction Activities, Developing Pollution Prevention Plans and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Entrance/Outlet Tire Wash TC-3
January 2011 California Stormwater BMP Handbook 3 of 3
Construction
www.casqa.org

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Wind Erosion Control WE-1
May 2011 California Stormwater BMP Handbook 1 of 5
Construction
www.casqa.org
Description and Purpose
Wind erosion or dust control consists of applying water or other chemical dust suppressants as necessary to prevent or alleviate dust nuisance generated by construction activities. Covering small stockpiles or areas is an alternative to applying water or other dust palliatives.

California’s Mediterranean climate, with a short “wet” season and a typically long, hot “dry” season, allows the soils to thoroughly dry out. During the dry season, construction activities are at their peak, and disturbed and exposed areas are increasingly subject to wind erosion, sediment tracking and dust generated by construction equipment. Site conditions and climate can make dust control more of an erosion problem than water based erosion. Additionally, many local agencies, including Air Quality Management Districts, require dust control and/or dust control permits in order to comply with local nuisance laws, opacity laws (visibility impairment) and the requirements of the Clean Air Act. Wind erosion control is required to be implemented at all construction sites greater than 1 acre by the General Permit.

Suitable Applications
Most BMPs that provide protection against water-based erosion will also protect against wind-based erosion and dust control requirements required by other agencies will generally meet wind erosion control requirements for water quality protection.

Wind erosion control BMPs are suitable during the following construction activities:

Categories
EC Erosion Control
SE Sediment Control 
TC Tracking Control
WE Wind Erosion Control 
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics

Potential Alternatives
EC-5 Soil Binders
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Wind Erosion Control WE-1
May 2011 California Stormwater BMP Handbook 2 of 5
Construction
www.casqa.org
 Construction vehicle traffic on unpaved roads
 Drilling and blasting activities
 Soils and debris storage piles
 Batch drop from front-end loaders
 Areas with unstabilized soil
 Final grading/site stabilization
Limitations
 Watering prevents dust only for a short period (generally less than a few hours) and should be applied daily (or more often) to be effective.
 Over watering may cause erosion and track-out.
 Oil or oil-treated subgrade should not be used for dust control because the oil may migrate into drainageways and/or seep into the soil.
 Chemical dust suppression agents may have potential environmental impacts. Selected chemical dust control agents should be environmentally benign.  Effectiveness of controls depends on soil, temperature, humidity, wind velocity and traffic.  Chemical dust suppression agents should not be used within 100 feet of wetlands or water bodies.
 Chemically treated subgrades may make the soil water repellant, interfering with long-term infiltration and the vegetation/re-vegetation of the site. Some chemical dust suppressants may be subject to freezing and may contain solvents and should be handled properly.  In compacted areas, watering and other liquid dust control measures may wash sediment or other constituents into the drainage system.
 If the soil surface has minimal natural moisture, the affected area may need to be pre-wetted so that chemical dust control agents can uniformly penetrate the soil surface.

Implementation
Dust Control Practices
Dust control BMPs generally stabilize exposed surfaces and minimize activities that suspend or track dust particles. The following table presents dust control practices that can be applied to varying site conditions that could potentially cause dust. For heavily traveled and disturbed areas, wet suppression (watering), chemical dust suppression, gravel asphalt surfacing, temporary gravel construction entrances, equipment wash-out areas, and haul truck covers can be employed as dust control applications. Permanent or temporary vegetation and mulching can be employed for areas of occasional or no construction traffic. Preventive measures include minimizing surface areas to be disturbed, limiting onsite vehicle traffic to 15 mph or less, and controlling the number and activity of vehicles on a site at any given time.

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May 2011 California Stormwater BMP Handbook 3 of 5
Construction
www.casqa.org
Chemical dust suppressants include: mulch and fiber based dust palliatives (e.g. paper mulch with gypsum binder), salts and brines (e.g. calcium chloride, magnesium chloride), non- petroleum based organics (e.g. vegetable oil, lignosulfonate), petroleum based organics (e.g. asphalt emulsion, dust oils, petroleum resins), synthetic polymers (e.g. polyvinyl acetate, vinyls, acrylic), clay additives (e.g. bentonite, montimorillonite) and electrochemical products (e.g. enzymes, ionic products).

Site
Condition
Dust Control Practices
Permanent
Vegetation Mulching
Wet
Suppression
(Watering)
Chemical
Dust
Suppression
Gravel
or
Asphalt
Temporary Gravel
Construction
Entrances/Equipment
Wash Down
Synthetic
Covers
Minimize
Extent of
Disturbed
Area
Disturbed
Areas not
Subject to
Traffic

X X X X X X
Disturbed
Areas
Subject to
Traffic

X X X X X
Material
Stockpiles X X X X X
Demolition X X X
Clearing/
Excavation X X X
Truck
Traffic on
Unpaved
Roads

X X X X X
Tracking X X

Additional preventive measures include:
 Schedule construction activities to minimize exposed area (see EC-1, Scheduling).  Quickly treat exposed soils using water, mulching, chemical dust suppressants, or stone/gravel layering.
 Identify and stabilize key access points prior to commencement of construction.  Minimize the impact of dust by anticipating the direction of prevailing winds.  Restrict construction traffic to stabilized roadways within the project site, as practicable.  Water should be applied by means of pressure-type distributors or pipelines equipped with a spray system or hoses and nozzles that will ensure even distribution.  All distribution equipment should be equipped with a positive means of shutoff.  Unless water is applied by means of pipelines, at least one mobile unit should be available at all times to apply water or dust palliative to the project.  If reclaimed waste water is used, the sources and discharge must meet California Department of Health Services water reclamation criteria and the Regional Water Quality

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May 2011 California Stormwater BMP Handbook 4 of 5
Construction
www.casqa.org
Control Board (RWQCB) requirements. Non-potable water should not be conveyed in tanks or drain pipes that will be used to convey potable water and there should be no connection between potable and non-potable supplies. Non-potable tanks, pipes, and other conveyances should be marked, “NON-POTABLE WATER - DO NOT DRINK.”  Pave or chemically stabilize access points where unpaved traffic surfaces adjoin paved roads.  Provide covers for haul trucks transporting materials that contribute to dust.  Provide for rapid clean up of sediments deposited on paved roads. Furnish stabilized construction road entrances and wheel wash areas.
 Stabilize inactive areas of construction sites using temporary vegetation or chemical stabilization methods.

For chemical stabilization, there are many products available for chemically stabilizing gravel roadways and stockpiles. If chemical stabilization is used, the chemicals should not create any adverse effects on stormwater, plant life, or groundwater and should meet all applicable regulatory requirements.

Costs
Installation costs for water and chemical dust suppression vary based on the method used and the length of effectiveness. Annual costs may be high since some of these measures are effective for only a few hours to a few days.

Inspection and Maintenance
 Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities.
 BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Check areas protected to ensure coverage.
 Most water-based dust control measures require frequent application, often daily or even multiple times per day. Obtain vendor or independent information on longevity of chemical dust suppressants.

References
Best Management Practices and Erosion Control Manual for Construction Sites, Flood Control District of Maricopa County, Arizona, September 1992.

California Air Pollution Control Laws, California Air Resources Board, updated annually.

Construction Manual, Chapter 4, Section 10, “Dust Control”; Section 17, “Watering”; and Section 18, “Dust Palliative”, California Department of Transportation (Caltrans), July 2001.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Wind Erosion Control WE-1
May 2011 California Stormwater BMP Handbook 5 of 5
Construction
www.casqa.org
Prospects for Attaining the State Ambient Air Quality Standards for Suspended Particulate Matter (PM10), Visibility Reducing Particles, Sulfates, Lead, and Hydrogen Sulfide, California Air Resources Board, April 1991.

Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

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Packet Pg. 380
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Material Delivery and Storage WM-1
November 2009 California Stormwater BMP Handbook 1 of 5 Construction
www.casqa.org

Description and Purpose
Prevent, reduce, or eliminate the discharge of pollutants from material delivery and storage to the stormwater system or watercourses by minimizing the storage of hazardous materials onsite, storing materials in watertight containers and/or a completely enclosed designated area, installing secondary containment, conducting regular inspections, and training employees and subcontractors.

This best management practice covers only material delivery and storage. For other information on materials, see WM-2, Material Use, or WM-4, Spill Prevention and Control. For information on wastes, see the waste management BMPs in this section.

Suitable Applications
These procedures are suitable for use at all construction sites with delivery and storage of the following materials:
 Soil stabilizers and binders
 Pesticides and herbicides
 Fertilizers
 Detergents
 Plaster
 Petroleum products such as fuel, oil, and grease
Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients 
Trash 
Metals 
Bacteria
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 381
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Material Delivery and Storage WM-1
November 2009 California Stormwater BMP Handbook 2 of 5 Construction
www.casqa.org
 Asphalt and concrete components
 Hazardous chemicals such as acids, lime, glues, adhesives, paints, solvents, and curing compounds
 Concrete compounds
 Other materials that may be detrimental if released to the environment Limitations
 Space limitation may preclude indoor storage.
 Storage sheds often must meet building and fire code requirements.

Implementation
The following steps should be taken to minimize risk:
 Chemicals must be stored in water tight containers with appropriate secondary containment or in a storage shed.
 When a material storage area is located on bare soil, the area should be lined and bermed.  Use containment pallets or other practical and available solutions, such as storing materials within newly constructed buildings or garages, to meet material storage requirements.  Stack erodible landscape material on pallets and cover when not in use.  Contain all fertilizers and other landscape materials when not in use.  Temporary storage areas should be located away from vehicular traffic.  Material Safety Data Sheets (MSDS) should be available on-site for all materials stored that have the potential to effect water quality.
 Construction site areas should be designated for material delivery and storage.  Material delivery and storage areas should be located away from waterways, if possible. Avoid transport near drainage paths or waterways.
Surround with earth berms or other appropriate containment BMP. See EC-9, Earth Dikes and Drainage Swales.
Place in an area that will be paved.
 Storage of reactive, ignitable, or flammable liquids must comply with the fire codes of your area. Contact the local Fire Marshal to review site materials, quantities, and proposed storage area to determine specific requirements. See the Flammable and Combustible Liquid Code, NFPA30.
 An up to date inventory of materials delivered and stored onsite should be kept.

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November 2009 California Stormwater BMP Handbook 3 of 5 Construction
www.casqa.org
 Hazardous materials storage onsite should be minimized.  Hazardous materials should be handled as infrequently as possible.  Keep ample spill cleanup supplies appropriate for the materials being stored. Ensure that cleanup supplies are in a conspicuous, labeled area.
 Employees and subcontractors should be trained on the proper material delivery and storage practices.
 Employees trained in emergency spill cleanup procedures must be present when dangerous materials or liquid chemicals are unloaded.
 If significant residual materials remain on the ground after construction is complete, properly remove and dispose of materials and any contaminated soil. See WM-7, Contaminated Soil Management. If the area is to be paved, pave as soon as materials are removed to stabilize the soil.

Material Storage Areas and Practices
 Liquids, petroleum products, and substances listed in 40 CFR Parts 110, 117, or 302 should be stored in approved containers and drums and should not be overfilled. Containers and drums should be placed in temporary containment facilities for storage.  A temporary containment facility should provide for a spill containment volume able to contain precipitation from a 25 year storm event, plus the greater of 10% of the aggregate volume of all containers or 100% of the capacity of the largest container within its boundary, whichever is greater.
 A temporary containment facility should be impervious to the materials stored therein for a minimum contact time of 72 hours.
 A temporary containment facility should be maintained free of accumulated rainwater and spills. In the event of spills or leaks, accumulated rainwater and spills should be collected and placed into drums. These liquids should be handled as a hazardous waste unless testing determines them to be non-hazardous. All collected liquids or non-hazardous liquids should be sent to an approved disposal site.
 Sufficient separation should be provided between stored containers to allow for spill cleanup and emergency response access.
 Incompatible materials, such as chlorine and ammonia, should not be stored in the same temporary containment facility.
 Materials should be covered prior to, and during rain events.  Materials should be stored in their original containers and the original product labels should be maintained in place in a legible condition. Damaged or otherwise illegible labels should be replaced immediately.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Material Delivery and Storage WM-1
November 2009 California Stormwater BMP Handbook 4 of 5 Construction
www.casqa.org
 Bagged and boxed materials should be stored on pallets and should not be allowed to accumulate on the ground. To provide protection from wind and rain throughout the rainy season, bagged and boxed materials should be covered during non-working days and prior to and during rain events.
 Stockpiles should be protected in accordance with WM-3, Stockpile Management.  Materials should be stored indoors within existing structures or completely enclosed storage sheds when available.
 Proper storage instructions should be posted at all times in an open and conspicuous location.
 An ample supply of appropriate spill clean up material should be kept near storage areas.  Also see WM-6, Hazardous Waste Management, for storing of hazardous wastes.

Material Delivery Practices
 Keep an accurate, up-to-date inventory of material delivered and stored onsite.  Arrange for employees trained in emergency spill cleanup procedures to be present when dangerous materials or liquid chemicals are unloaded.

Spill Cleanup
 Contain and clean up any spill immediately.
 Properly remove and dispose of any hazardous materials or contaminated soil if significant residual materials remain on the ground after construction is complete. See WM-7, Contaminated Soil Management.
 See WM-4, Spill Prevention and Control, for spills of chemicals and/or hazardous materials.  If spills or leaks of materials occur that are not contained and could discharge to surface waters, non-visible sampling of site discharge may be required. Refer to the General Permit or to your project specific Construction Site Monitoring Plan to determine if and where sampling is required.

Cost
 The largest cost of implementation may be in the construction of a materials storage area that is covered and provides secondary containment.

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November 2009 California Stormwater BMP Handbook 5 of 5 Construction
www.casqa.org
 Repair or replace perimeter controls, containment structures, covers, and liners as needed to maintain proper function.

Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance, Working Group Working Paper; USEPA, April 1992.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.

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Packet Pg. 385
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Material Use WM-2
November 2009 California Stormwater BMP Handbook 1 of 4 Construction
www.casqa.org
Description and Purpose
Prevent or reduce the discharge of pollutants to the storm drain system or watercourses from material use by using alternative products, minimizing hazardous material use onsite, and training employees and subcontractors.

Suitable Applications
This BMP is suitable for use at all construction projects. These procedures apply when the following materials are used or prepared onsite:
 Pesticides and herbicides
 Fertilizers
 Detergents
 Petroleum products such as fuel, oil, and grease
 Asphalt and other concrete components
 Other hazardous chemicals such as acids, lime, glues, adhesives, paints, solvents, and curing compounds
 Other materials that may be detrimental if released to the environment
Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients 
Trash 
Metals 
Bacteria
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 386
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Material Use WM-2
November 2009 California Stormwater BMP Handbook 2 of 4 Construction
www.casqa.org
Limitations
Safer alternative building and construction products may not be available or suitable in every instance.

Implementation
The following steps should be taken to minimize risk:
 Minimize use of hazardous materials onsite.
 Follow manufacturer instructions regarding uses, protective equipment, ventilation, flammability, and mixing of chemicals.
 Train personnel who use pesticides. The California Department of Pesticide Regulation and county agricultural commissioners license pesticide dealers, certify pesticide applicators, and conduct onsite inspections.
 The preferred method of termiticide application is soil injection near the existing or proposed structure foundation/slab; however, if not feasible, soil drench application of termiticides should follow EPA label guidelines and the following recommendations (most of which are applicable to most pesticide applications):
 Do not treat soil that is water-saturated or frozen.
 Application shall not commence within 24-hours of a predicted precipitation event with a 40% or greater probability. Weather tracking must be performed on a daily basis prior to termiticide application and during the period of termiticide application.  Do not allow treatment chemicals to runoff from the target area. Apply proper quantity to prevent excess runoff. Provide containment for and divert stormwater from application areas using berms or diversion ditches during application.  Dry season: Do not apply within 10 feet of storm drains. Do not apply within 25 feet of aquatic habitats (such as, but not limited to, lakes; reservoirs; rivers; permanent streams; marshes or ponds; estuaries; and commercial fish farm ponds).  Wet season: Do not apply within 50 feet of storm drains or aquatic habitats (such as, but not limited to, lakes; reservoirs; rivers; permanent streams; marshes or ponds; estuaries; and commercial fish farm ponds) unless a vegetative buffer is present (if so, refer to dry season requirements).
 Do not make on-grade applications when sustained wind speeds are above 10 mph (at application site) at nozzle end height.
 Cover treatment site prior to a rain event in order to prevent run-off of the pesticide into non-target areas. The treated area should be limited to a size that can be backfilled and/or covered by the end of the work shift. Backfilling or covering of the treated area shall be done by the end of the same work shift in which the application is made.  The applicator must either cover the soil him/herself or provide written notification of the above requirement to the contractor on site and to the person commissioning the

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November 2009 California Stormwater BMP Handbook 3 of 4 Construction
www.casqa.org
application (if different than the contractor). If notice is provided to the contractor or the person commissioning the application, then they are responsible under the Federal Insecticide Fungicide, and Rodenticide Act (FIFRA) to ensure that: 1) if the concrete slab cannot be poured over the treated soil within 24 hours of application, the treated soil is covered with a waterproof covering (such as polyethylene sheeting), and 2) the treated soil is covered if precipitation is predicted to occur before the concrete slab is scheduled to be poured.
 Do not over-apply fertilizers, herbicides, and pesticides. Prepare only the amount needed.

Follow the recommended usage instructions. Over-application is expensive and environmentally harmful. Unless on steep slopes, till fertilizers into the soil rather than hydraulic application. Apply surface dressings in several smaller applications, as opposed to one large application, to allow time for infiltration and to avoid excess material being carried offsite by runoff. Do not apply these chemicals before predicted rainfall.  Train employees and subcontractors in proper material use.  Supply Material Safety Data Sheets (MSDS) for all materials.  Dispose of latex paint and paint cans, used brushes, rags, absorbent materials, and drop cloths, when thoroughly dry and are no longer hazardous, with other construction debris.  Do not remove the original product label; it contains important safety and disposal information. Use the entire product before disposing of the container.  Mix paint indoors or in a containment area. Never clean paintbrushes or rinse paint containers into a street, gutter, storm drain, or watercourse. Dispose of any paint thinners, residue, and sludge(s) that cannot be recycled, as hazardous waste.  For water-based paint, clean brushes to the extent practicable, and rinse to a drain leading to a sanitary sewer where permitted, or contain for proper disposal off site. For oil-based paints, clean brushes to the extent practicable, and filter and reuse thinners and solvents.  Use recycled and less hazardous products when practical. Recycle residual paints, solvents, non-treated lumber, and other materials.
 Use materials only where and when needed to complete the construction activity. Use safer alternative materials as much as possible. Reduce or eliminate use of hazardous materials onsite when practical.
 Document the location, time, chemicals applied, and applicator’s name and qualifications.  Keep an ample supply of spill clean up material near use areas. Train employees in spill clean up procedures.
 Avoid exposing applied materials to rainfall and runoff unless sufficient time has been allowed for them to dry.
 Discontinue use of erodible landscape material within 2 days prior to a forecasted rain event and materials should be covered and/or bermed.

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 Provide containment for material use areas such as masons’ areas or paint mixing/preparation areas to prevent materials/pollutants from entering stormwater.

Costs
All of the above are low cost measures.

Inspection and Maintenance
 Inspect and verify that activity-based BMPs are in place prior to the commencement of associated activities.
 BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Ensure employees and subcontractors throughout the job are using appropriate practices.

Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance, Working Group Working Paper; USEPA, April 1992.

Comments on Risk Assessments Risk Reduction Options for Cypermethrin: Docket No. OPP– 2005– 0293; California Stormwater Quality Association (CASQA) letter to USEPA, 2006.Environmental Hazard and General Labeling for Pyrethroid Non-Agricultural Outdoor Products, EPA-HQ-OPP-2008-0331-0021; USEPA, 2008.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.

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Packet Pg. 389
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Stockpile Management WM-3
July 2012 California Stormwater BMP Handbook 1 of 3
Construction
www.casqa.org

Description and Purpose
Stockpile management procedures and practices are designed to reduce or eliminate air and stormwater pollution from stockpiles of soil, soil amendments, sand, paving materials such as portland cement concrete (PCC) rubble, asphalt concrete (AC), asphalt concrete rubble, aggregate base, aggregate sub base or pre-mixed aggregate, asphalt minder (so called “cold mix” asphalt), and pressure treated wood.

Suitable Applications
Implement in all projects that stockpile soil and other loose materials.

Limitations
 Plastic sheeting as a stockpile protection is temporary and hard to manage in windy conditions. Where plastic is used, consider use of plastic tarps with nylon reinforcement
which may be more durable than standard sheeting.
 Plastic sheeting can increase runoff volume due to lack of infiltration and potentially cause perimeter control failure.  Plastic sheeting breaks down faster in sunlight.
 The use of Plastic materials and photodegradable plastics should be avoided.

Implementation
Protection of stockpiles is a year-round requirement. To properly manage stockpiles:

Categories
EC Erosion Control
SE Sediment Control 
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients 
Trash 
Metals 
Bacteria
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

8.b
Packet Pg. 390
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Stockpile Management WM-3
July 2012 California Stormwater BMP Handbook 2 of 3
Construction
www.casqa.org
 On larger sites, a minimum of 50 ft separation from concentrated flows of stormwater, drainage courses, and inlets is recommended.
 After 14 days of inactivity, a stockpile is non-active and requires further protection described below. All stockpiles are required to be protected as non-active stockpiles immediately if they are not scheduled to be used within 14 days.
 Protect all stockpiles from stormwater runon using temporary perimeter sediment barriers such as compost berms (SE-13), temporary silt dikes (SE-12), fiber rolls (SE-5), silt fences (SE-1), sandbags (SE-8), gravel bags (SE-6), or biofilter bags (SE-14). Refer to the individual fact sheet for each of these controls for installation information.  Implement wind erosion control practices as appropriate on all stockpiled material. For specific information, see WE-1, Wind Erosion Control.
 Manage stockpiles of contaminated soil in accordance with WM-7, Contaminated Soil Management.
 Place bagged materials on pallets and under cover.
 Ensure that stockpile coverings are installed securely to protect from wind and rain.  Some plastic covers withstand weather and sunlight better than others. Select cover materials or methods based on anticipated duration of use.

Protection of Non-Active Stockpiles
A stockpile is considered non-active if it either is not used for 14 days or if it is scheduled not to be used for 14 days or more. Stockpiles need to be protected immediately if they are not scheduled to be used within 14 days. Non-active stockpiles of the identified materials should be protected as follows:

Soil stockpiles
 Soil stockpiles should be covered or protected with soil stabilization measures and a temporary perimeter sediment barrier at all times.
 Temporary vegetation should be considered for topsoil piles that will be stockpiled for extended periods.

Stockpiles of Portland cement concrete rubble, asphalt concrete, asphalt concrete rubble, aggregate base, or aggregate sub base
 Stockpiles should be covered and protected with a temporary perimeter sediment barrier at all times.

Stockpiles of “cold mix”
 Cold mix stockpiles should be placed on and covered with plastic sheeting or comparable material at all times and surrounded by a berm.

Stockpiles of fly ash, stucco, hydrated lime

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 Stockpiles of materials that may raise the pH of runoff (i.e., basic materials) should be covered with plastic and surrounded by a berm.

Stockpiles/Storage of wood (Pressure treated with chromated copper arsenate or ammoniacal copper zinc arsenate
 Treated wood should be covered with plastic sheeting or comparable material at all times and surrounded by a berm.

Protection of Active Stockpiles
A stockpile is active when it is being used or is scheduled to be used within 14 days of the previous use. Active stockpiles of the identified materials should be protected as follows:
 All stockpiles should be covered and protected with a temporary linear sediment barrier prior to the onset of precipitation.
 Stockpiles of “cold mix” and treated wood, and basic materials should be placed on and covered with plastic sheeting or comparable material and surrounded by a berm prior to the onset of precipitation.
 The downstream perimeter of an active stockpile should be protected with a linear sediment barrier or berm and runoff should be diverted around or away from the stockpile on the upstream perimeter.

Costs
For cost information associated with stockpile protection refer to the individual erosion or sediment control BMP fact sheet considered for implementation (For example, refer to SE-1 Silt Fence for installation of silt fence around the perimeter of a stockpile.) Inspection and Maintenance
 Stockpiles must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 It may be necessary to inspect stockpiles covered with plastic sheeting more frequently during certain conditions (for example, high winds or extreme heat).  Repair and/or replace perimeter controls and covers as needed to keep them functioning properly.
 Sediment shall be removed when it reaches one-third of the barrier height.

References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Spill Prevention and Control WM-4
January 2011 California Stormwater BMP Handbook 1 of 6
Construction
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Description and Purpose
Prevent or reduce the discharge of pollutants to drainage systems or watercourses from leaks and spills by reducing the chance for spills, stopping the source of spills, containing and cleaning up spills, properly disposing of spill materials, and training employees.

This best management practice covers only spill prevention and control. However, WM-1, Materials Delivery and Storage, and WM-2, Material Use, also contain useful information,
particularly on spill prevention. For information on wastes, see the waste management BMPs in this section.

Suitable Applications
This BMP is suitable for all construction projects. Spill control procedures are implemented anytime chemicals or hazardous substances are stored on the construction site, including the following materials:
 Soil stabilizers/binders
 Dust palliatives
 Herbicides
 Growth inhibitors
 Fertilizers
 Deicing/anti-icing chemicals
Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment 
Nutrients 
Trash 
Metals 
Bacteria
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Spill Prevention and Control WM-4
January 2011 California Stormwater BMP Handbook 2 of 6
Construction
www.casqa.org
 Fuels
 Lubricants
 Other petroleum distillates
Limitations
 In some cases it may be necessary to use a private spill cleanup company.  This BMP applies to spills caused by the contractor and subcontractors.  Procedures and practices presented in this BMP are general. Contractor should identify appropriate practices for the specific materials used or stored onsite Implementation
The following steps will help reduce the stormwater impacts of leaks and spills:

Education
 Be aware that different materials pollute in different amounts. Make sure that each employee knows what a “significant spill” is for each material they use, and what is the appropriate response for “significant” and “insignificant” spills.  Educate employees and subcontractors on potential dangers to humans and the environment from spills and leaks.
 Hold regular meetings to discuss and reinforce appropriate disposal procedures (incorporate into regular safety meetings).
 Establish a continuing education program to indoctrinate new employees.  Have contractor’s superintendent or representative oversee and enforce proper spill prevention and control measures.

General Measures
 To the extent that the work can be accomplished safely, spills of oil, petroleum products, substances listed under 40 CFR parts 110,117, and 302, and sanitary and septic wastes should be contained and cleaned up immediately.
 Store hazardous materials and wastes in covered containers and protect from vandalism.  Place a stockpile of spill cleanup materials where it will be readily accessible.  Train employees in spill prevention and cleanup.
 Designate responsible individuals to oversee and enforce control measures.  Spills should be covered and protected from stormwater runon during rainfall to the extent that it doesn’t compromise clean up activities.
 Do not bury or wash spills with water.

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 Store and dispose of used clean up materials, contaminated materials, and recovered spill material that is no longer suitable for the intended purpose in conformance with the provisions in applicable BMPs.
 Do not allow water used for cleaning and decontamination to enter storm drains or watercourses. Collect and dispose of contaminated water in accordance with WM-10, Liquid Waste Management.
 Contain water overflow or minor water spillage and do not allow it to discharge into drainage facilities or watercourses.
 Place proper storage, cleanup, and spill reporting instructions for hazardous materials stored or used on the project site in an open, conspicuous, and accessible location.  Keep waste storage areas clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. Perimeter controls, containment structures, covers, and liners should be repaired or replaced as needed to maintain proper function.

Cleanup
 Clean up leaks and spills immediately.
 Use a rag for small spills on paved surfaces, 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 either a certified laundry (rags) or disposed of as hazardous waste.
 Never hose down or bury dry material spills. Clean up as much of the material as possible and dispose of properly. See the waste management BMPs in this section for specific information.

Minor Spills
 Minor spills typically involve small quantities of oil, gasoline, paint, etc. which can be controlled by the first responder at the discovery of the spill.  Use absorbent materials on small spills rather than hosing down or burying the spill.  Absorbent materials should be promptly removed and disposed of properly.  Follow the practice below for a minor spill:
Contain the spread of the spill.
Recover spilled materials.
Clean the contaminated area and properly dispose of contaminated materials.

Semi-Significant Spills
 Semi-significant spills still can be controlled by the first responder along with the aid of other personnel such as laborers and the foreman, etc. This response may require the cessation of all other activities.

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January 2011 California Stormwater BMP Handbook 4 of 6
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 Spills should be cleaned up immediately:
Contain spread of the spill.
Notify the project foreman immediately.
If the spill occurs on paved or impermeable surfaces, clean up using "dry" methods (absorbent materials, cat litter and/or rags). Contain the spill by encircling with absorbent materials and do not let the spill spread widely. If the spill occurs in dirt areas, immediately contain the spill by constructing an earthen dike. Dig up and properly dispose of contaminated soil. If the spill occurs during rain, cover spill with tarps or other material to prevent contaminating runoff.

Significant/Hazardous Spills
 For significant or hazardous spills that cannot be controlled by personnel in the immediate vicinity, the following steps should be taken:
Notify the local emergency response by dialing 911. In addition to 911, the contractor will notify the proper county officials. It is the contractor's responsibility to have all emergency phone numbers at the construction site.
Notify the Governor's Office of Emergency Services Warning Center, (916) 845-8911. For spills of federal reportable quantities, in conformance with the requirements in 40 CFR parts 110,119, and 302, the contractor should notify the National Response Center at (800) 424-8802.
Notification should first be made by telephone and followed up with a written report. The services of a spills contractor or a Haz-Mat team should be obtained immediately.

Construction personnel should not attempt to clean up until the appropriate and qualified staffs have arrived at the job site.
Other agencies which may need to be consulted include, but are not limited to, the Fire Department, the Public Works Department, the Coast Guard, the Highway Patrol, the City/County Police Department, Department of Toxic Substances, California Division of Oil and Gas, Cal/OSHA, etc.

Reporting
 Report significant spills to local agencies, such as the Fire Department; they can assist in cleanup.
 Federal regulations require that any significant oil spill into a water body or onto an adjoining shoreline be reported to the National Response Center (NRC) at 800-424-8802 (24 hours).

Use the following measures related to specific activities:

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January 2011 California Stormwater BMP Handbook 5 of 6
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Vehicle and Equipment Maintenance
 If maintenance must occur onsite, use a designated area and a secondary containment, located away from drainage courses, to prevent the runon of stormwater and the runoff of spills.
 Regularly inspect onsite 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.
 Place drip pans or absorbent materials under paving equipment when not in use.  Use absorbent materials on small spills rather than hosing down or burying the spill.

Remove the absorbent 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 pollute stormwater. Place the oil filter in a funnel over a waste oil-recycling drum to drain excess oil before disposal.

Oil filters can also be recycled. Ask the 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.

Vehicle and Equipment Fueling
 If fueling must occur onsite, use designate areas, located away from drainage courses, to prevent the runon of stormwater and the runoff of spills.  Discourage “topping off” of fuel tanks.
 Always use secondary containment, such as a drain pan, when fueling to catch spills/ leaks.

Costs
Prevention of leaks and spills is inexpensive. Treatment and/ or disposal of contaminated soil or water can be quite expensive.

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 Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur.
 Keep ample supplies of spill control and cleanup materials onsite, near storage, unloading, and maintenance areas.
 Update your spill prevention and control plan and stock cleanup materials as changes occur in the types of chemicals onsite.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.

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Packet Pg. 398
Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Solid Waste Management WM-5
January 2011 California Stormwater BMP Handbook 1 of 4
Construction
www.casqa.org
Description and Purpose
Solid waste management procedures and practices are designed to prevent or reduce the discharge of pollutants to stormwater from solid or construction waste by providing designated waste collection areas and containers, arranging for regular disposal, and training employees and subcontractors.

Suitable Applications
This BMP is suitable for construction sites where the following wastes are generated or stored:
 Solid waste generated from trees and shrubs removed
during land clearing, demolition of existing structures (rubble), and building construction
 Packaging materials including wood, paper, and plastic  Scrap or surplus building materials including scrap metals, rubber, plastic, glass pieces, and masonry products
 Domestic wastes including food containers such as beverage cans, coffee cups, paper bags, plastic wrappers, and
cigarettes
 Construction wastes including brick, mortar, timber, steel and metal scraps, pipe and electrical cuttings, non-
hazardous equipment parts, styrofoam and other materials used to transport and package construction materials
Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment 
Nutrients 
Trash 
Metals 
Bacteria
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Solid Waste Management WM-5
January 2011 California Stormwater BMP Handbook 2 of 4
Construction
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 Highway planting wastes, including vegetative material, plant containers, and packaging materials
Limitations
Temporary stockpiling of certain construction wastes may not necessitate stringent drainage related controls during the non-rainy season or in desert areas with low rainfall.

Implementation
The following steps will help keep a clean site and reduce stormwater pollution:
 Select designated waste collection areas onsite.
 Inform trash-hauling contractors that you will accept only watertight dumpsters for onsite use. Inspect dumpsters for leaks and repair any dumpster that is not watertight.  Locate containers in a covered area or in a secondary containment.  Provide an adequate number of containers with lids or covers that can be placed over the container to keep rain out or to prevent loss of wastes when it is windy.  Cover waste containers at the end of each work day and when it is raining.  Plan for additional containers and more frequent pickup during the demolition phase of construction.
 Collect site trash daily, especially during rainy and windy conditions.  Remove this solid waste promptly since erosion and sediment control devices tend to collect litter.
 Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris.
 Do not hose out dumpsters on the construction site. Leave dumpster cleaning to the trash hauling contractor.
 Arrange for regular waste collection before containers overflow.  Clean up immediately if a container does spill.
 Make sure that construction waste is collected, removed, and disposed of only at authorized disposal areas.

Education
 Have the contractor’s superintendent or representative oversee and enforce proper solid waste management procedures and practices.
 Instruct employees and subcontractors on identification of solid waste and hazardous waste.  Educate employees and subcontractors on solid waste storage and disposal procedures.

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 Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular safety meetings).
 Require that employees and subcontractors follow solid waste handling and storage procedures.
 Prohibit littering by employees, subcontractors, and visitors.  Minimize production of solid waste materials wherever possible.

Collection, Storage, and Disposal
 Littering on the project site should be prohibited.
 To prevent clogging of the storm drainage system, litter and debris removal from drainage grates, trash racks, and ditch lines should be a priority.  Trash receptacles should be provided in the contractor’s yard, field trailer areas, and at locations where workers congregate for lunch and break periods.  Litter from work areas within the construction limits of the project site should be collected and placed in watertight dumpsters at least weekly, regardless of whether the litter was generated by the contractor, the public, or others. Collected litter and debris should not be placed in or next to drain inlets, stormwater drainage systems, or watercourses.  Dumpsters of sufficient size and number should be provided to contain the solid waste generated by the project.
 Full dumpsters should be removed from the project site and the contents should be disposed of by the trash hauling contractor.
 Construction debris and waste should be removed from the site biweekly or more frequently as needed.
 Construction material visible to the public should be stored or stacked in an orderly manner.  Stormwater runon should be prevented from contacting stored solid waste through the use of berms, dikes, or other temporary diversion structures or through the use of measures to elevate waste from site surfaces.
 Solid waste storage areas should be located at least 50 ft from drainage facilities and watercourses and should not be located in areas prone to flooding or ponding.  Except during fair weather, construction and highway planting waste not stored in watertight dumpsters should be securely covered from wind and rain by covering the waste with tarps or plastic.
 Segregate potentially hazardous waste from non-hazardous construction site waste.  Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris.

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 For disposal of hazardous waste, see WM-6, Hazardous Waste Management. Have hazardous waste hauled to an appropriate disposal and/or recycling facility.  Salvage or recycle useful vegetation debris, packaging and surplus building materials when practical. For example, trees and shrubs from land clearing can be used as a brush barrier, or converted into wood chips, then used as mulch on graded areas. Wood pallets, cardboard boxes, and construction scraps can also be recycled.

Costs
All of the above are low cost measures.

References
Processes, Procedures and Methods to Control Pollution Resulting from All Construction Activity, 430/9-73-007, USEPA, 1973.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Hazardous Waste Management WM-6
January 2011 California Stormwater BMP Handbook 1 of 6
Construction
www.casqa.org
Description and Purpose
Prevent or reduce the discharge of pollutants to stormwater from hazardous waste through proper material use, waste disposal, and training of employees and subcontractors.

Suitable Applications
This best management practice (BMP) applies to all construction projects. Hazardous waste management practices are
implemented on construction projects that generate waste from the use of:

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment
Nutrients 
Trash 
Metals 
Bacteria 
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.
Petroleum Products Asphalt Products
Concrete Curing Compounds Pesticides
Palliatives Acids
Septic Wastes Paints
Stains Solvents
Wood Preservatives Roofing Tar
Any materials deemed a hazardous waste in California, Title 22 Division 4.5, or listed in 40 CFR Parts 110, 117, 261, or 302

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January 2011 California Stormwater BMP Handbook 2 of 6
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In addition, sites with existing structures may contain wastes, which must be disposed of in accordance with federal, state, and local regulations. These wastes include:
 Sandblasting grit mixed with lead-, cadmium-, or chromium-based paints  Asbestos
 PCBs (particularly in older transformers)
Limitations
 Hazardous waste that cannot be reused or recycled must be disposed of by a licensed hazardous waste hauler.
 Nothing in this BMP relieves the contractor from responsibility for compliance with federal, state, and local laws regarding storage, handling, transportation, and disposal of hazardous wastes.
 This BMP does not cover aerially deposited lead (ADL) soils. For ADL soils refer to WM-7, Contaminated Soil Management.

Implementation
The following steps will help reduce stormwater pollution from hazardous wastes:

Material Use
 Wastes should be stored in sealed containers constructed of a suitable material and should be labeled as required by Title 22 CCR, Division 4.5 and 49 CFR Parts 172, 173, 178, and 179.  All hazardous waste should be stored, transported, and disposed as required in Title 22 CCR, Division 4.5 and 49 CFR 261-263.
 Waste containers should be stored in temporary containment facilities that should comply with the following requirements:
Temporary containment facility should provide for a spill containment volume equal to

1.5 times the volume of all containers able to contain precipitation from a 25 year storm event, plus the greater of 10% of the aggregate volume of all containers or 100% of the capacity of the largest tank within its boundary, whichever is greater. Temporary containment facility should be impervious to the materials stored there for a minimum contact time of 72 hours.
Temporary containment facilities should be maintained free of accumulated rainwater and spills. In the event of spills or leaks, accumulated rainwater and spills should be placed into drums after each rainfall. These liquids should be handled as a hazardous waste unless testing determines them to be non-hazardous. Non-hazardous liquids should be sent to an approved disposal site.
Sufficient separation should be provided between stored containers to allow for spill cleanup and emergency response access.

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Incompatible materials, such as chlorine and ammonia, should not be stored in the same temporary containment facility.
Throughout the rainy season, temporary containment facilities should be covered during non-working days, and prior to rain events. Covered facilities may include use of plastic tarps for small facilities or constructed roofs with overhangs.  Drums should not be overfilled and wastes should not be mixed.  Unless watertight, containers of dry waste should be stored on pallets.  Do not over-apply herbicides and pesticides. Prepare only the amount needed. Follow the recommended usage instructions. Over application is expensive and environmentally harmful. Apply surface dressings in several smaller applications, as opposed to one large application. Allow time for infiltration and avoid excess material being carried offsite by runoff. Do not apply these chemicals just before it rains. People applying pesticides must be certified in accordance with federal and state regulations.  Paint brushes and equipment for water and oil based paints should be cleaned within a contained area and should not be allowed to contaminate site soils, watercourses, or drainage systems. Waste paints, thinners, solvents, residues, and sludges that cannot be recycled or reused should be disposed of as hazardous waste. When thoroughly dry, latex paint and paint cans, used brushes, rags, absorbent materials, and drop cloths should be disposed of as solid waste.
 Do not clean out brushes or rinse paint containers into the dirt, street, gutter, storm drain, or stream. “Paint out” brushes as much as possible. Rinse water-based paints to the sanitary sewer. Filter and reuse thinners and solvents. Dispose of excess oil-based paints and sludge as hazardous waste.
 The following actions should be taken with respect to temporary contaminant:
Ensure that adequate hazardous waste storage volume is available. Ensure that hazardous waste collection containers are conveniently located. Designate hazardous waste storage areas onsite away from storm drains or watercourses and away from moving vehicles and equipment to prevent accidental spills. Minimize production or generation of hazardous materials and hazardous waste on the job site.
Use containment berms in fueling and maintenance areas and where the potential for spills is high.
Segregate potentially hazardous waste from non-hazardous construction site debris. Keep liquid or semi-liquid hazardous waste in appropriate containers (closed drums or similar) and under cover.

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Clearly label all hazardous waste containers with the waste being stored and the date of accumulation.
Place hazardous waste containers in secondary containment. Do not allow potentially hazardous waste materials to accumulate on the ground. Do not mix wastes.
Use all of the product before disposing of the container. Do not remove the original product label; it contains important safety and disposal information.

Waste Recycling Disposal
 Select designated hazardous waste collection areas onsite.  Hazardous materials and wastes should be stored in covered containers and protected from vandalism.
 Place hazardous waste containers in secondary containment.  Do not mix wastes, this can cause chemical reactions, making recycling impossible and complicating disposal.
 Recycle any useful materials such as used oil or water-based paint.  Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids, pesticides, additives, curing compounds) are not disposed of in dumpsters designated for construction debris.
 Arrange for regular waste collection before containers overflow.  Make sure that hazardous waste (e.g., excess oil-based paint and sludge) is collected, removed, and disposed of only at authorized disposal areas.

Disposal Procedures
 Waste should be disposed of by a licensed hazardous waste transporter at an authorized and licensed disposal facility or recycling facility utilizing properly completed Uniform Hazardous Waste Manifest forms.
 A Department of Health Services certified laboratory should sample waste to determine the appropriate disposal facility.
 Properly dispose of rainwater in secondary containment that may have mixed with hazardous waste.
 Attention is directed to "Hazardous Material", "Contaminated Material", and "Aerially Deposited Lead" of the contract documents regarding the handling and disposal of hazardous materials.

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January 2011 California Stormwater BMP Handbook 5 of 6
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Education
 Educate employees and subcontractors on hazardous waste storage and disposal procedures.  Educate employees and subcontractors on potential dangers to humans and the environment from hazardous wastes.
 Instruct employees and subcontractors on safety procedures for common construction site hazardous wastes.
 Instruct employees and subcontractors in identification of hazardous and solid waste.  Hold regular meetings to discuss and reinforce hazardous waste management procedures (incorporate into regular safety meetings).
 The contractor’s superintendent or representative should oversee and enforce proper hazardous waste management procedures and practices.
 Make sure that hazardous waste is collected, removed, and disposed of only at authorized disposal areas.
 Warning signs should be placed in areas recently treated with chemicals.  Place a stockpile of spill cleanup materials where it will be readily accessible.  If a container does spill, clean up immediately.

Costs
All of the above are low cost measures.

Inspection and Maintenance
 Inspect and verify that activity– based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events..  Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur
 Hazardous waste should be regularly collected.
 A foreman or construction supervisor should monitor onsite hazardous waste storage and disposal procedures.
 Waste storage areas should be kept clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored.  Perimeter controls, containment structures, covers, and liners should be repaired or replaced as needed to maintain proper function.

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 Hazardous spills should be cleaned up and reported in conformance with the applicable Material Safety Data Sheet (MSDS) and the instructions posted at the project site.  The National Response Center, at (800) 424-8802, should be notified of spills of federal reportable quantities in conformance with the requirements in 40 CFR parts 110, 117, and 302. Also notify the Governors Office of Emergency Services Warning Center at (916) 845- 8911.
 A copy of the hazardous waste manifests should be provided.

Processes, Procedures and Methods to Control Pollution Resulting from All Construction Activity, 430/9-73-007, USEPA, 1973.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Contaminated Soil Management WM-7
January 2011 California Stormwater BMP Handbook 1 of 5
Construction
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Description and Purpose
Prevent or reduce the discharge of pollutants to stormwater from contaminated soil and highly acidic or alkaline soils by conducting pre-construction surveys, inspecting excavations regularly, and remediating contaminated soil promptly.

Suitable Applications
Contaminated soil management is implemented on
construction projects in highly urbanized or industrial areas where soil contamination may have occurred due to spills, illicit discharges, aerial deposition, past use and leaks from
underground storage tanks.

Limitations
Contaminated soils that cannot be treated onsite must be disposed of offsite by a licensed hazardous waste hauler. The presence of contaminated soil may indicate contaminated water as well. See NS-2, Dewatering Operations, for more
information.

The procedures and practices presented in this BMP are
general. The contractor should identify appropriate practices and procedures for the specific contaminants known to exist or discovered onsite.

Implementation
Most owners and developers conduct pre-construction
environmental assessments as a matter of routine.

Contaminated soils are often identified during project planning and development with known locations identified in the plans, specifications and in the SWPPP. The contractor should review applicable reports and investigate appropriate call-outs in the Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment
Nutrients 
Trash 
Metals 
Bacteria 
Oil and Grease 
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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January 2011 California Stormwater BMP Handbook 2 of 5
Construction
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plans, specifications, and SWPPP. Recent court rulings holding contractors liable for cleanup costs when they unknowingly move contaminated soil highlight the need for contractors to confirm a site assessment is completed before earth moving begins.

The following steps will help reduce stormwater pollution from contaminated soil:
 Conduct thorough, pre-construction inspections of the site and review documents related to the site. If inspection or reviews indicated presence of contaminated soils, develop a plan before starting work.
 Look for contaminated soil as evidenced by discoloration, odors, differences in soil properties, abandoned underground tanks or pipes, or buried debris.  Prevent leaks and spills. Contaminated soil can be expensive to treat and dispose of properly. However, addressing the problem before construction is much less expensive than after the structures are in place.
 The contractor may further identify contaminated soils by investigating:
Past site uses and activities
Detected or undetected spills and leaks
Acid or alkaline solutions from exposed soil or rock formations high in acid or alkaline forming elements
Contaminated soil as evidenced by discoloration, odors, differences in soil properties, abandoned underground tanks or pipes, or buried debris. Suspected soils should be tested at a certified laboratory.

Education
 Have employees and subcontractors complete a safety training program which meets 29 CFR 1910.120 and 8 CCR 5192 covering the potential hazards as identified, prior to performing any excavation work at the locations containing material classified as hazardous.  Educate employees and subcontractors in identification of contaminated soil and on contaminated soil handling and disposal procedures.
 Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular safety meetings).

Handling Procedures for Material with Aerially Deposited Lead (ADL)  Materials from areas designated as containing (ADL) may, if allowed by the contract special provisions, be excavated, transported, and used in the construction of embankments and/or backfill.
 Excavation, transportation, and placement operations should result in no visible dust.  Caution should be exercised to prevent spillage of lead containing material during transport.

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January 2011 California Stormwater BMP Handbook 3 of 5
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 Quality should be monitored during excavation of soils contaminated with lead.

Handling Procedures for Contaminated Soils
 Minimize onsite storage. Contaminated soil should be disposed of properly in accordance with all applicable regulations. All hazardous waste storage will comply with the requirements in Title 22, CCR, Sections 66265.250 to 66265.260.  Test suspected soils at an approved certified laboratory.  Work with the local regulatory agencies to develop options for treatment or disposal if the soil is contaminated.
 Avoid temporary stockpiling of contaminated soils or hazardous material.  Take the following precautions if temporary stockpiling is necessary:
Cover the stockpile with plastic sheeting or tarps.
Install a berm around the stockpile to prevent runoff from leaving the area. Do not stockpile in or near storm drains or watercourses.  Remove contaminated material and hazardous material on exteriors of transport vehicles and place either into the current transport vehicle or into the excavation prior to the vehicle leaving the exclusion zone.
 Monitor the air quality continuously during excavation operations at all locations containing hazardous material.
 Procure all permits and licenses, pay all charges and fees, and give all notices necessary and incident to the due and lawful prosecution of the work, including registration for transporting vehicles carrying the contaminated material and the hazardous material.  Collect water from decontamination procedures and treat or dispose of it at an appropriate disposal site.
 Collect non-reusable protective equipment, once used by any personnel, and dispose of at an appropriate disposal site.
 Install temporary security fence to surround and secure the exclusion zone. Remove fencing when no longer needed.
 Excavate, transport, and dispose of contaminated material and hazardous material in accordance with the rules and regulations of the following agencies (the specifications of these agencies supersede the procedures outlined in this BMP):
United States Department of Transportation (USDOT)
United States Environmental Protection Agency (USEPA) California Environmental Protection Agency (CAL-EPA)

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January 2011 California Stormwater BMP Handbook 4 of 5
Construction
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California Division of Occupation Safety and Health Administration (CAL-OSHA) Local regulatory agencies
Procedures for Underground Storage Tank Removals
 Prior to commencing tank removal operations, obtain the required underground storage tank removal permits and approval from the federal, state, and local agencies that have jurisdiction over such work.
 To determine if it contains hazardous substances, arrange to have tested, any liquid or sludge found in the underground tank prior to its removal.  Following the tank removal, take soil samples beneath the excavated tank and perform analysis as required by the local agency representative(s).  The underground storage tank, any liquid or sludge found within the tank, and all contaminated substances and hazardous substances removed during the tank removal and transported to disposal facilities permitted to accept such waste.

Water Control
 All necessary precautions and preventive measures should be taken to prevent the flow of water, including ground water, from mixing with hazardous substances or underground storage tank excavations. Such preventative measures may consist of, but are not limited to, berms, cofferdams, grout curtains, freeze walls, and seal course concrete or any combination thereof.
 If water does enter an excavation and becomes contaminated, such water, when necessary to proceed with the work, should be discharged to clean, closed top, watertight transportable holding tanks, treated, and disposed of in accordance with federal, state, and local laws.

Costs
Prevention of leaks and spills is inexpensive. Treatment or disposal of contaminated soil can be quite expensive.

Inspection and Maintenance
 Inspect and verify that activity– based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect BMPs in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.  Arrange for contractor’s Water Pollution Control Manager, foreman, and/or construction supervisor to monitor onsite contaminated soil storage and disposal procedures.  Monitor air quality continuously during excavation operations at all locations containing hazardous material.
 Coordinate contaminated soils and hazardous substances/waste management with the appropriate federal, state, and local agencies.

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January 2011 California Stormwater BMP Handbook 5 of 5
Construction
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 Implement WM-4, Spill Prevention and Control, to prevent leaks and spills as much as possible.

Processes, Procedures and Methods to Control Pollution Resulting from All Construction Activity, 430/9-73-007, USEPA, 1973.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Concrete Waste Management WM-8
July 2012 California Stormwater BMP Handbook 1 of 7
Construction
www.casqa.org
Description and Purpose
Prevent the discharge of pollutants to stormwater from
concrete waste by conducting washout onsite or offsite in a designated area, and by employee and subcontractor training.

The General Permit incorporates Numeric Action Levels (NAL) for pH (see Section 2 of this handbook to determine your project’s risk level and if you are subject to these requirements).

Many types of construction materials, including mortar, concrete, stucco, cement and block and their associated wastes have basic chemical properties that can raise pH levels outside of the permitted range. Additional care should be taken when managing these materials to prevent them from coming into contact with stormwater flows and raising pH to levels outside the accepted range.

Suitable Applications
Concrete waste management procedures and practices are
implemented on construction projects where:
 Concrete is used as a construction material or where
concrete dust and debris result from demolition activities.  Slurries containing portland cement concrete (PCC) are generated, such as from saw cutting, coring, grinding,
grooving, and hydro-concrete demolition.
 Concrete trucks and other concrete-coated equipment are washed onsite.

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control 
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment 
Nutrients
Trash
Metals 
Bacteria
Oil and Grease
Organics

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Concrete Waste Management WM-8
July 2012 California Stormwater BMP Handbook 2 of 7
Construction
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 Mortar-mixing stations exist.
 Stucco mixing and spraying.
 See also NS-8, Vehicle and Equipment Cleaning.

Limitations
 Offsite washout of concrete wastes may not always be possible.  Multiple washouts may be needed to assure adequate capacity and to allow for evaporation.

Implementation
The following steps will help reduce stormwater pollution from concrete wastes:
 Incorporate requirements for concrete waste management into material supplier and subcontractor agreements.
 Store dry and wet materials under cover, away from drainage areas. Refer to WM-1, Material Delivery and Storage for more information.
 Avoid mixing excess amounts of concrete.
 Perform washout of concrete trucks in designated areas only, where washout will not reach stormwater.
 Do not wash out concrete trucks into storm drains, open ditches, streets, streams or onto the ground. Trucks should always be washed out into designated facilities.  Do not allow excess concrete to be dumped onsite, except in designated areas.  For onsite washout:
On larger sites, it is recommended to locate washout areas at least 50 feet from storm drains, open ditches, or water bodies. Do not allow runoff from this area by constructing a temporary pit or bermed area large enough for liquid and solid waste. Washout wastes into the temporary washout where the concrete can set, be broken up, and then disposed properly.
Washouts shall be implemented in a manner that prevents leaching to underlying soils.

Washout containers must be water tight and washouts on or in the ground must be lined with a suitable impervious liner, typically a plastic type material.  Do not wash sweepings from exposed aggregate concrete into the street or storm drain.

Collect and return sweepings to aggregate base stockpile or dispose in the trash.  See typical concrete washout installation details at the end of this fact sheet.

Education
 Educate employees, subcontractors, and suppliers on the concrete waste management techniques described herein.

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 Arrange for contractor’s superintendent or representative to oversee and enforce concrete waste management procedures.
 Discuss the concrete management techniques described in this BMP (such as handling of concrete waste and washout) with the ready-mix concrete supplier before any deliveries are made.

Concrete Demolition Wastes
 Stockpile concrete demolition waste in accordance with BMP WM-3, Stockpile Management.  Dispose of or recycle hardened concrete waste in accordance with applicable federal, state or local regulations.

Concrete Slurry Wastes
 PCC and AC waste should not be allowed to enter storm drains or watercourses.  PCC and AC waste should be collected and disposed of or placed in a temporary concrete washout facility (as described in Onsite Temporary Concrete Washout Facility, Concrete Transit Truck Washout Procedures, below).
 A foreman or construction supervisor should monitor onsite concrete working tasks, such as saw cutting, coring, grinding and grooving to ensure proper methods are implemented.  Saw-cut concrete slurry should not be allowed to enter storm drains or watercourses.

Residue from grinding operations should be picked up by means of a vacuum attachment to the grinding machine or by sweeping. Saw cutting residue should not be allowed to flow across the pavement and should not be left on the surface of the pavement. See also NS-3, Paving and Grinding Operations; and WM-10, Liquid Waste Management.  Concrete slurry residue should be disposed in a temporary washout facility (as described in Onsite Temporary Concrete Washout Facility, Concrete Transit Truck Washout Procedures, below) and allowed to dry. Dispose of dry slurry residue in accordance with WM-5, Solid Waste Management.

Onsite Temporary Concrete Washout Facility, Transit Truck Washout Procedures
 Temporary concrete washout facilities should be located a minimum of 50 ft from storm drain inlets, open drainage facilities, and watercourses. Each facility should be located away from construction traffic or access areas to prevent disturbance or tracking.  A sign should be installed adjacent to each washout facility to inform concrete equipment operators to utilize the proper facilities.
 Temporary concrete washout facilities should be constructed above grade or below grade at the option of the contractor. Temporary concrete washout facilities should be constructed and maintained in sufficient quantity and size to contain all liquid and concrete waste generated by washout operations.

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 Temporary washout facilities should have a temporary pit or bermed areas of sufficient volume to completely contain all liquid and waste concrete materials generated during washout procedures.
 Temporary washout facilities should be lined to prevent discharge to the underlying ground or surrounding area.
 Washout of concrete trucks should be performed in designated areas only.  Only concrete from mixer truck chutes should be washed into concrete wash out.  Concrete washout from concrete pumper bins can be washed into concrete pumper trucks and discharged into designated washout area or properly disposed of or recycled offsite.  Once concrete wastes are washed into the designated area and allowed to harden, the concrete should be broken up, removed, and disposed of per WM-5, Solid Waste Management. Dispose of or recycle hardened concrete on a regular basis.  Temporary Concrete Washout Facility (Type Above Grade) Temporary concrete washout facility (type above grade) should be constructed as shown on the details at the end of this BMP, with a recommended minimum length and minimum width of 10 ft; however, smaller sites or jobs may only need a smaller washout facility. With any washout, always maintain a sufficient quantity and volume to contain all liquid and concrete waste generated by washout operations. Materials used to construct the washout area should conform to the provisions detailed in their respective BMPs (e.g., SE-8 Sandbag Barrier).
Plastic lining material should be a minimum of 10 mil in polyethylene sheeting and should be free of holes, tears, or other defects that compromise the impermeability of the material.
Alternatively, portable removable containers can be used as above grade concrete washouts. Also called a “roll-off”; this concrete washout facility should be properly sealed to prevent leakage, and should be removed from the site and replaced when the container reaches 75% capacity.
 Temporary Concrete Washout Facility (Type Below Grade) Temporary concrete washout facilities (type below grade) should be constructed as shown on the details at the end of this BMP, with a recommended minimum length and minimum width of 10 ft. The quantity and volume should be sufficient to contain all liquid and concrete waste generated by washout operations. Lath and flagging should be commercial type.
Plastic lining material should be a minimum of 10 mil polyethylene sheeting and should be free of holes, tears, or other defects that compromise the impermeability of the material.

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The base of a washout facility should be free of rock or debris that may damage a plastic liner.

Removal of Temporary Concrete Washout Facilities
 When temporary concrete washout facilities are no longer required for the work, the hardened concrete should be removed and properly disposed or recycled in accordance with federal, state or local regulations. Materials used to construct temporary concrete washout facilities should be removed from the site of the work and properly disposed or recycled in accordance with federal, state or local regulations..
 Holes, depressions or other ground disturbance caused by the removal of the temporary concrete washout facilities should be backfilled and repaired.

Costs
All of the above are low cost measures. Roll-0ff concrete washout facilities can be more costly than other measures due to removal and replacement; however, provide a cleaner alternative to traditional washouts. The type of washout facility, size, and availability of materials will determine the cost of the washout.

Hardened concrete materials should be removed and properly disposed or recycled in accordance with federal, state or local regulations.
 Washout facilities must be cleaned, or new facilities must be constructed and ready for use once the washout is 75% full.
 Inspect washout facilities for damage (e.g. torn liner, evidence of leaks, signage, etc.). Repair all identified damage.

Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000, Updated March 2003.

Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.

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July 2012 California Stormwater BMP Handbook 6 of 7
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July 2012 California Stormwater BMP Handbook 7 of 7
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November 2009 California Stormwater BMP Handbook 1 of 3 Construction
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Description and Purpose
Proper sanitary and septic waste management prevent the discharge of pollutants to stormwater from sanitary and septic waste by providing convenient, well-maintained facilities, and arranging for regular service and disposal.

Suitable Applications
Sanitary septic waste management practices are suitable for use at all construction sites that use temporary or portable sanitary and septic waste systems.

Limitations
None identified.

Implementation
Sanitary or septic wastes should be treated or disposed of in accordance with state and local requirements. In many cases, one contract with a local facility supplier will be all that it takes to make sure sanitary wastes are properly disposed.

Storage and Disposal Procedures
 Temporary sanitary facilities should be located away from drainage facilities, watercourses, and from traffic
circulation. If site conditions allow, place portable facilities a minimum of 50 feet from drainage conveyances and
traffic areas. When subjected to high winds or risk of high winds, temporary sanitary facilities should be secured to prevent overturning.

Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Category
 Secondary Category
Targeted Constituents
Sediment
Nutrients 
Trash 
Metals
Bacteria 
Oil and Grease
Organics 

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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November 2009 California Stormwater BMP Handbook 2 of 3 Construction
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 Temporary sanitary facilities must be equipped with containment to prevent discharge of pollutants to the stormwater drainage system of the receiving water.  Consider safety as well as environmental implications before placing temporary sanitary facilities.
 Wastewater should not be discharged or buried within the project site.  Sanitary and septic systems that discharge directly into sanitary sewer systems, where permissible, should comply with the local health agency, city, county, and sewer district requirements.
 Only reputable, licensed sanitary and septic waste haulers should be used.  Sanitary facilities should be located in a convenient location.  Temporary septic systems should treat wastes to appropriate levels before discharging.  If using an onsite disposal system (OSDS), such as a septic system, local health agency requirements must be followed.
 Temporary sanitary facilities that discharge to the sanitary sewer system should be properly connected to avoid illicit discharges.
 Sanitary and septic facilities should be maintained in good working order by a licensed service.
 Regular waste collection by a licensed hauler should be arranged before facilities overflow.  If a spill does occur from a temporary sanitary facility, follow federal, state and local regulations for containment and clean-up.

Education
 Educate employees, subcontractors, and suppliers on sanitary and septic waste storage and disposal procedures.
 Educate employees, subcontractors, and suppliers of potential dangers to humans and the environment from sanitary and septic wastes.
 Instruct employees, subcontractors, and suppliers in identification of sanitary and septic waste.
 Hold regular meetings to discuss and reinforce the use of sanitary facilities (incorporate into regular safety meetings).
 Establish a continuing education program to indoctrinate new employees.

Costs
All of the above are low cost measures.

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Inspection and Maintenance
 BMPs must be inspected in accordance with General Permit requirements for the associated project type and risk level. It is recommended that at a minimum, BMPs be inspected weekly, prior to forecasted rain events, daily during extended rain events, and after the conclusion of rain events.
 Arrange for regular waste collection.
 If high winds are expected, portable sanitary facilities must be secured with spikes or weighed down to prevent over turning.
 If spills or leaks from sanitary or septic facilities occur that are not contained and discharge from the site, non-visible sampling of site discharge may be required. Refer to the General Permit or to your project specific Construction Site Monitoring Plan to determine if and where sampling is required.

References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), March 2003.

Stormwater Management for Construction Activities; Developing Pollution Prevention Plans and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.

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November 2009 California Stormwater BMP Handbook 1 of 4 Construction
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Description and Purpose
Liquid waste management includes procedures and practices to prevent discharge of pollutants to the storm drain system or to watercourses as a result of the creation, collection, and disposal of non-hazardous liquid wastes.

Suitable Applications
Liquid waste management is applicable to construction projects that generate any of the following non-hazardous by-products, residuals, or wastes:
 Drilling slurries and drilling fluids
 Grease-free and oil-free wastewater and rinse water
 Dredgings
 Other non-stormwater liquid discharges not permitted by separate permits
Limitations
 Disposal of some liquid wastes may be subject to specific laws and regulations or to requirements of other permits secured for the construction project (e.g., NPDES permits, Army Corps permits, Coastal Commission permits, etc.).
 Liquid waste management does not apply to dewatering
operations (NS-2 Dewatering Operations), solid waste
management (WM-5, Solid Waste Management), hazardous
wastes (WM-6, Hazardous Waste Management), or
Categories
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
WM Waste Management and
Materials Pollution Control 
Legend:
 Primary Objective
 Secondary Objective
Targeted Constituents
Sediment 
Nutrients 
Trash 
Metals 
Bacteria
Oil and Grease 
Organics

Potential Alternatives
None
If User/Subscriber modifies this fact
sheet in any way, the CASQA
name/logo and footer below must be
removed from each page and not
appear on the modified version.

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November 2009 California Stormwater BMP Handbook 2 of 4 Construction
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concrete slurry residue (WM-8, Concrete Waste Management).  Typical permitted non-stormwater discharges can include: water line flushing; landscape irrigation; diverted stream flows; rising ground waters; uncontaminated pumped ground water; discharges from potable water sources; foundation drains; irrigation water; springs; water from crawl space pumps; footing drains; lawn watering; flows from riparian habitats and wetlands; and discharges or flows from emergency fire fighting activities.

Implementation
General Practices
 Instruct employees and subcontractors how to safely differentiate between non-hazardous liquid waste and potential or known hazardous liquid waste.  Instruct employees, subcontractors, and suppliers that it is unacceptable for any liquid waste to enter any storm drainage device, waterway, or receiving water.  Educate employees and subcontractors on liquid waste generating activities and liquid waste storage and disposal procedures.
 Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular safety meetings).
 Verify which non-stormwater discharges are permitted by the statewide NPDES permit; different regions might have different requirements not outlined in this permit.  Apply NS-8, Vehicle and Equipment Cleaning for managing wash water and rinse water from vehicle and equipment cleaning operations.

Containing Liquid Wastes
 Drilling residue and drilling fluids should not be allowed to enter storm drains and watercourses and should be disposed of.
 If an appropriate location is available, drilling residue and drilling fluids that are exempt under Title 23, CCR § 2511(g) may be dried by infiltration and evaporation in a containment facility constructed in conformance with the provisions concerning the Temporary Concrete Washout Facilities detailed in WM-8, Concrete Waste Management.  Liquid wastes generated as part of an operational procedure, such as water-laden dredged material and drilling mud, should be contained and not allowed to flow into drainage channels or receiving waters prior to treatment.
 Liquid wastes should be contained in a controlled area such as a holding pit, sediment basin, roll-off bin, or portable tank.
 Containment devices must be structurally sound and leak free.  Containment devices must be of sufficient quantity or volume to completely contain the liquid wastes generated.

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 Precautions should be taken to avoid spills or accidental releases of contained liquid wastes.

Apply the education measures and spill response procedures outlined in WM-4, Spill Prevention and Control.
 Containment areas or devices should not be located where accidental release of the contained liquid can threaten health or safety or discharge to water bodies, channels, or storm drains.

Capturing Liquid Wastes
 Capture all liquid wastes that have the potential to affect the storm drainage system (such as wash water and rinse water from cleaning walls or pavement), before they run off a surface.  Do not allow liquid wastes to flow or discharge uncontrolled. Use temporary dikes or berms to intercept flows and direct them to a containment area or device for capture.  Use a sediment trap (SE-3, Sediment Trap) for capturing and treating sediment laden liquid waste or capture in a containment device and allow sediment to settle.

Disposing of Liquid Wastes
 A typical method to handle liquid waste is to dewater the contained liquid waste, using procedures such as described in NS-2, Dewatering Operations, and SE-2, Sediment Basin, and dispose of resulting solids per WM-5, Solid Waste Management.  Methods of disposal for some liquid wastes may be prescribed in Water Quality Reports, NPDES permits, Environmental Impact Reports, 401 or 404 permits, and local agency discharge permits, etc. Review the SWPPP to see if disposal methods are identified.  Liquid wastes, such as from dredged material, may require testing and certification whether it is hazardous or not before a disposal method can be determined.  For disposal of hazardous waste, see WM-6, Hazardous Waste Management.  If necessary, further treat liquid wastes prior to disposal. Treatment may include, though is not limited to, sedimentation, filtration, and chemical neutralization.

Costs
Prevention costs for liquid waste management are minimal. Costs increase if cleanup or fines are involved.

Inspection and Maintenance
 Inspect and verify that activity– based BMPs are in place prior to the commencement of associated activities. While activities associated with the BMP are under way, inspect weekly during the rainy season and of two-week intervals in the non-rainy season to verify continued BMP implementation.
 Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges occur.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Liquid Waste Management WM-10
November 2009 California Stormwater BMP Handbook 4 of 4 Construction
www.casqa.org
 Remove deposited solids in containment areas and capturing devices as needed and at the completion of the task. Dispose of any solids as described in WM-5, Solid Waste Management.
 Inspect containment areas and capturing devices and repair as needed.

References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation (Caltrans), November 2000.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix I
Appendix I: BMP Inspection Form

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix I

BMP INSPECTION REPORT

Date and Time of Inspection: Date Report Written:

Inspection Type:
(Circle one)
Weekly
Complete Parts
I,II,III and VII
Pre-Storm
Complete Parts
I,II,III,IV and VII
During Rain Event
Complete Parts I, II,
III, V, and VII
Post-Storm
Complete Parts
I,II,III,VI and VII
Part I. General Information
Site Information
Construction Site Name:

Construction stage and
completed activities:

Approximate area
of site that is exposed:

Photos Taken:
(Circle one) Yes No
Photo Reference IDs:

Weather
Estimate storm beginning:
(date and time)
Estimate storm duration:
(hours)
Estimate time since last storm:
(days or hours)
Rain gauge reading and location:
(in)
Is a “Qualifying Event” predicted or did one occur (i.e., 0.5” rain with 48-hrs or greater between events)? (Y/N) If yes, summarize forecast:

Exemption Documentation (explanation required if inspection could not be conducted). Visual inspections are not required outside of business hours or during dangerous weather conditions such as flooding or electrical storms.

Inspector Information
Inspector Name: Inspector Title:

Signature: Date:

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix I
Part II. BMP Observations. Describe deficiencies in Part III.

Minimum BMPs for Risk Level 2 Sites
Failures or
other short
comings
(yes, no, N/A)
Action
Required
(yes/no)
Action
Implemented
(Date)
Good Housekeeping for Construction Materials
Inventory of products (excluding materials designed to be outdoors)
Stockpiled construction materials not actively in use are covered and bermed
All chemicals are stored in watertight containers with
appropriate secondary containment, or in a completely
enclosed storage shed

Construction materials are minimally exposed to precipitation BMPs preventing the off-site tracking of materials are
implemented and properly effective
Good Housekeeping for Waste Management
Wash/rinse water and materials are prevented from being disposed into the storm drain system
Portable toilets are contained to prevent discharges of waste Sanitation facilities are clean and with no apparent for leaks and spills
Equipment is in place to cover waste disposal containers at the end of business day and during rain events
Discharges from waste disposal containers are prevented from discharging to the storm drain system / receiving water Stockpiled waste material is securely protected from wind and rain if not actively in use
Procedures are in place for addressing hazardous and non- hazardous spills
Appropriate spill response personnel are assigned and trained Equipment and materials for cleanup of spills is available onsite
Washout areas (e.g., concrete) are contained appropriately to prevent discharge or infiltration into the underlying soil Good Housekeeping for Vehicle Storage and Maintenance
Measures are in place to prevent oil, grease, or fuel from leaking into the ground, storm drains, or surface waters All equipment or vehicles are fueled, maintained, and stored in a designated area with appropriate BMPs
Vehicle and equipment leaks are cleaned immediately and disposed of properly

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix I
Part II. BMP Observations Continued. Describe deficiencies in Part III.

Minimum BMPs for Risk Level 2 Sites
Adequately
designed,
implemented and
effective
(yes, no, N/A)
Action
Required
(yes/no)
Action
Implemented
(Date)
Good Housekeeping for Landscape Materials
Stockpiled landscape materials such as mulches and topsoil are contained and covered when not actively in use
Erodible landscape material has not been applied 2 days before a forecasted rain event or during an event
Erodible landscape materials are applied at quantities and rates in accordance with manufacturer recommendations
Bagged erodible landscape materials are stored on pallets and covered
Good Housekeeping for Air Deposition of Site Materials
Good housekeeping measures are implemented onsite to
control the air deposition of site materials and from site operations

Non-Stormwater Management
Non-Stormwater discharges are properly controlled
Vehicles are washed in a manner to prevent non-stormwater discharges to surface waters or drainage systems
Streets are cleaned in a manner to prevent unauthorized non- stormwater discharges to surface waters or drainage systems.

Erosion Controls
Wind erosion controls are effectively implemented
Effective soil cover is provided for disturbed areas inactive (i.e., not scheduled to be disturbed for 14 days) as well as finished slopes, open space, utility backfill, and completed lots

The use of plastic materials is limited in cases when a more sustainable, environmentally friendly alternative exists.

Sediment Controls
Perimeter controls are established and effective at controlling erosion and sediment discharges from the site
Entrances and exits are stabilized to control erosion and sediment discharges from the site
Sediment basins are properly maintained
Linear sediment control along toe of slope, face of slope an at grade breaks (Risk Level 2 & 3 Only)
Limit construction activity to and from site to entrances and exits that employ effective controls to prevent offsite tracking (Risk Level 2 & 3 Only)

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix I
Part II. BMP Observations Continued. Describe deficiencies in Part III.

Ensure all storm, drain inlets and perimeter controls, runoff control BMPs and pollutants controls at entrances and exits are maintained and protected from activities the reduce their effectiveness (Risk Level 2 & 3 Only)

Inspect all immediate access roads daily (Risk Level 2 & 3 Only)
Run-On and Run-Off Controls
Run-on to the site is effectively managed and directed away from all disturbed areas.

Other
Are the project SWPPP and BMP plan up to date, available on-site and being properly implemented?

Part III. Descriptions of BMP Deficiencies
Deficiency
Repairs Implemented:

Note - Repairs must begin within 72 hours of identification and, complete repairs as soon as possible.

Start Date Action

1. 2.

3. 4.

5. 6.

7. 8.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix I
Part IV. Additional Pre-Storm Observations. Note the presence or absence of floating and suspended materials, sheen, discoloration, turbidity, odors, and source(s) of pollutants(s).

Yes, No, N/A
Do stormwater storage and containment areas have adequate freeboard? If no, complete Part III.

Are drainage areas free of spills, leaks, or uncontrolled pollutant sources? If no, complete Part VII and describe below.

Notes:

Are stormwater storage and containment areas free of leaks? If no, complete Parts III and/or VII and describe below.

Notes:

Part V. Additional During Storm Observations. If BMPs cannot be inspected during inclement weather, list the results of visual inspections at all relevant outfalls, discharge points, and downstream locations. Note odors or visible sheen on the surface of discharges. Complete Part VII (Corrective Actions) as needed.

Outfall, Discharge Point, or Other Downstream Location
Location Description
Location Description
Location Description
Location Description
Location Description
Location Description

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix I
Part VI. Additional Post-Storm Observations. Visually observe (inspect) stormwater discharges at all discharge locations within two business days (48 hours) after each qualifying rain event, and observe (inspect) the discharge of stored or contained stormwater that is derived from and discharged subsequent to a qualifying rain event producing precipitation of ½ inch or more at the time of discharge. Complete Part VII (Corrective Actions) as needed.

Discharge Location, Storage
or Containment Area
Visual Observation

Part VII. Additional Corrective Actions Required. Identify additional corrective actions not included with BMP Deficiencies (Part III) above. Note if SWPPP change is required.

Required Actions Implementation Date

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix J

Appendix J: Project Specific Rain Event Action Plan Template

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix J
Rain Event Action Plan (REAP)

Date of REAP WDID Number
Date Rain Predicted to
Occur
Predicted % Chance of
Rain

Predicted Rain Event Triggered Actions
Below is a list of suggested actions and items to review for this project. Each active Trade should check all material storage areas, stockpiles, waste management areas, vehicle and equipment storage and maintenance , areas of active soil disturbance, and areas of active work to ensure the proper implementation of BMPs. Project -wide BMPs should be checked and cross-referenced to the BMP progress map.

Trade or Activity Suggested action(s) to perform / item(s) to review prior to rain event Information and
Scheduling
 Inform trade supervisors of predicted rain
 Check scheduled activities and reschedule as needed
 Alert erosion/sediment control provider
 Alert sample collection contractor (if applicable)
 Schedule staff for extended rain inspections (including weekends & holidays)  Check Erosion and Sediment Control (ESC) material stock  Review BMP progress map
 Other: __________________________________________________  Other: __________________________________________________  Other: __________________________________________________ Material storage areas  Material under cover or in sheds (ex: treated woods and metals)  Perimeter control around stockpiles
 Other: __________________________________________________  Other: __________________________________________________  Other: __________________________________________________ Waste management
areas
 Dumpsters closed
 Drain holes plugged
 Recycling bins covered
 Sanitary stations bermed and protected from tipping
 Other: __________________________________________________  Other: __________________________________________________  Other: __________________________________________________ Trade operations  Exterior operations shut down for event (e.g., no concrete pours or paving)  Soil treatments (e.g.,: fertilizer) ceased within 24 hours of event  Materials and equipment (ex: tools) properly stored and covered  Waste and debris disposed in covered dumpsters or removed from site  Trenches and excavations protected
 Perimeter controls around disturbed areas
 Fueling and repair areas covered and bermed
 Other: __________________________________________________  Other: __________________________________________________  Other: __________________________________________________ Continued on the next page.

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix J
Site erosion control
BMP’s
 Adequate capacity in sediment basins and traps
 Site perimeter controls in place
 Catch basin and drop inlet protection in place and cleaned  Temporary erosion controls deployed
 Temporary perimeter controls deployed around disturbed areas and stockpiles  Roads swept; site ingress and egress points stabilized  Other: __________________________________________________  Other: __________________________________________________ Concrete washout area  Adequate capacity for rain
 Wash-out bins covered
 Other: __________________________________________________  Other: __________________________________________________ Spills and Drips  All incident spills and drips, including paint, stucco, fuel, and oil cleaned  Drip pans emptied
 Other: __________________________________________________  Other: __________________________________________________ Other / Discussion /
Diagrams
 _______________________________________________________  _______________________________________________________  _______________________________________________________  _______________________________________________________  _______________________________________________________  _______________________________________________________  _______________________________________________________  _______________________________________________________

Attach a printout of the weather forecast from the NOAA website to the REAP.

I certify under penalty of law that this Rain Event Action Plan (REAP) will be performed in accordance with the General Permit by me or under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.

______________________________________________________ __________________________ Qualified SWPPP Practitioner (Use ink please) Date

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building 1 Appendix K
Appendix K: Training Reporting Form

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building 2 Appendix K
Trained Contractor Personnel Log
Stormwater Management Training Log and Documentation

Project Name: Campbell Police Operations Building
WDID Number: 30132.10

Stormwater Management Topic: (check as appropriate)

Erosion Control Sediment Control
Wind Erosion Control Tracking Control
Non-Stormwater Management Waste Management and Materials Pollution Control Stormwater Sampling
Specific Training Objective:

Location: Date:

Instructor: Telephone:

Course length hours

Attendee Roster (Attach additional forms if necessary)
Name Company Phone

As needed, add proof of external training (e.g., course completion certificates, credentials for QSP, QSD).

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building 1 Appendix L
Appendix L: Responsible Parties

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building 2 Appendix L
Authorization of Approved Signatories
Project Name: Campbell Police Operations Building
WDID Number: 30132.10

Name and Role Company

Signature Date Telephone Number

Name and Role Company

Signature Date Telephone Number

Name and Role Company

Signature Date Telephone Number

(For additional approved signatories, attach additional sheets as needed.)

Signature of the Legally Responsible Person Date

Legally Responsible Person’s Name and Title Telephone Number

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building 3 Appendix L
Identification of QSP
Project Name: Campbell Police Operations Building
WDID Number: 30132.10

The following are QSPs associated with this project:

Name of Personnel(1) Company Date

(1) If additional QSPs are required on the job site add additional lines and include information here

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building 4 Appendix L
Authorization of Data Submitters
Project Name: Campbell Police Operations Building
WDID Number: 30132.10

Name and Role Company

Signature Date Telephone Number

Name and Role Company

Signature Date Telephone Number

Name and Role Company

Signature Date Telephone Number

(For additional data submitter authorizations, attach additional sheets as needed.)

Signature of the Legally Responsible Person /
Approved Signatory
Date

Legally Responsible / Approved Signatory
Person’s Name and Title
Telephone Number

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building Appendix M
Appendix M: Contractors and Subcontractors

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) Campbell Police Operations Building 1 Appendix N
Appendix N: Construction General Permit
A copy of the General Permit may be found online at the State Water Resources Control Board website:
http://www.waterboards.ca.gov/water_issues/programs/stormwater/constpermits.shtml

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD)

Campbell Police Operations Building Appendix O
Appendix O: Field Sampling Document

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) SWPPP Appendix O

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD) App II
Appendix II:

Geotechnical Investigation for Proposed Police Operations Building

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Attachment: Construction Contract Documents (Lathrop Construction Award - PD)

Prepared for LPA Design Studios

GEOTECHNICAL INVESTIGATION

PROPOSED POLICE OPERATIONS BUILDING
70 NORTH 1ST STREET

CAMPBELL, CALIFORNIA

UNAUTHORIZED USE OR COPYING OF THIS DOCUMENT IS STRICTLY

PROHIBITED BY ANYONE OTHER THAN THE CLIENT FOR THE SPECIFIC

PROJECT

June 14, 2021
Project No. 21-1988

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June 14, 2021
Project No. 21-1988
Mr. Hormoz Ziaebrahimi
Managing Director
LPA Design Studios
60 South Market Street, Suite 150
San Jose, CA 95113
Subject: Final Report
Geotechnical Investigation
Proposed Police Operations Building
70 North 1st Street
Campbell, California
Dear Mr. Ziaebrahimi:

We are pleased to present our final geotechnical investigation report, dated June 14, 2021, for the proposed police operations building to be constructed at 70 North 1st Street in Campbell, California. Our geotechnical investigation was performed in accordance with our Consultant Services Authorization dated March 3, 2021.

The site is rectangular-shaped lot currently consists of an asphalt-paved parking lot in the northwestern portion of the Campbell Civic Center. Plans are to construct an at-grade, two-story, steel-framed police operations building with plan dimensions of about 100 by 150 feet. A surface parking lot will be constructed east of the proposed building.

From a geotechnical standpoint, we conclude the building can be constructed as planned, provided the recommendations presented in this report are incorporated into the project plans and specifications and implemented during construction. The primary geotechnical concern for the proposed development is providing adequate foundation support for the proposed police operations building. The soil encountered at foundation level in the building footprint has moderate strength and relatively low compressibility. Therefore, we conclude the proposed building may be supported on conventional spread footings bearing on firm alluvium. We estimate total and differential settlement of the proposed building supported on spread footings bearing on firm native soil will be less than 3/4 inch and less than 1/2 inch over a horizontal distance of 30 feet, respectively.

Our report contains specific recommendations regarding earthwork and grading, foundation design, and other geotechnical issues. The recommendations contained in our report are based on limited subsurface exploration. Consequently, variations between expected and actual soil conditions may be found in localized areas during construction.

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Mr. Hormoz Ziaebrahimi
LPA Design Studios
June 14, 2021

Page 2 ends

Campbell City CouncilNovember 21, 2023

Campbell City Council
November 21, 2023