HomeMy WebLinkAboutWQMP Oct 2, 20071
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WATER QUALITY MANAGEMENT PLAN (WQMP)
For
#2708 -01 TEMECULA WAL -MART EXPANSION
32225 Highway 79 S
Temecula, CA 92592
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Prepared by:
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Nasland Engineering
4740 Ruffner Street
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San Diego, CA 92111
Phone 858 -292 -7770
Fax 858 -571 -3241
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October 02, 2007 Page 1 of 14 Job No. 306- 035 -13
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Table of Contents
Section Description
Page
TitlePage ............................................................................... ...............................
1
Tableof Contents ............................................................... ...............................
2
1.0
Vicinity Ma ............................................................. ...............................
4
2.0
Protect Description .................................................... ...............................
4
3.0
Site Ma ................................................................. ...............................
5
3.1
Draina e ........................................................ ...............................
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3.2
Im rovement Plans .......................................... ...............................
A
3.3
Existing Storm Drain System .............................. ...............................
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4.0
Pollutants and Conditions of Concern .......................... ...............................
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4.1
Watershed ..................................................... ...............................
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4.2
Pollutants From the Project Area ....................... ...............................
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4.3
Impaired Downstream Bodies of Water.
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4.4
Impact of Hydrologic Re ime ............................. ...............................
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5.0
Site Des- n Best Management Practices ....................... ...............................
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5.1
Maintain Pre-Developed Rainfall Runoff Characteristics ...........................
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5.1.1
Minimize Impervious Footprint.. ............
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Conserve Natural Areas .......................... ...............................
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5.1.3
Minimize Directly Connected Impervious Areas ...........................
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5.1.4
Maximize Cano Interce tion and Water Conservation ...............
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5.2
Protect Slo as and Channels ............................. ...............................
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5.2.1
Convey Run Off ................................... ...............................
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5.2.2
Ve etate Slo es .................................... ...............................
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5.2.3
Stabilize Permanent Channel Crossings ..... ...............................
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5.2.4
Install Ener Dissi aters ........................ ...............................
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6.0
Source Control Best Management Practices ................... ...............................
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6.1
Design Outdoor Material Storage Area to Reduce Pollution Introduction...
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6.2
Desi n Trash Storage Areas to Reduce Pollution Introduction ..................
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6.3
Employ Integrated Pest Management Principles ...... .............................'.
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6.4
Use Effective Irrigation Systems and Landscape Design ..........................
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6.5
Provide Storm Water conveyance System Stenciling and Si na e...........
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7.0
Structural Treatment Best Management Practices ........... ...............................
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for Selection ......................................... ...............................
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ted Pollutants of Concern ....................... ...............................
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antsNot Present ................................... ...............................
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HeaMetals ...................................... ...............................
W7.6Altsernati
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ication.................................................. ...............................
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sions........................ ............................ ... I...........................
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ativeAnalysis ....................................... . ...............................
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7.7
Design Criteria .............................................. ...............................
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7.9
Pollutant Removal Information ......................... ...............................
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7.10
Maintenance Condition ................................ ...............................
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9.0
Conclusion .............................................................. ...............................
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10.0
En ineer of Work ...................................................... ...............................
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11.0
References.. ........
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October 02, 2007 Page 2 of 14 Job No. 306 - 035 -13
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Attachments
Storm Water Requirements Applicability Checklists (Forms 5500, 5501 and 5502)
BMP Data Table
2002 CWA Section 303(d) List of Water Quality Limited Segment List
Flo -Gard and Flo -Gard + Plus Catch Basin Filter Insert Manufacturer's Information and
Maintenance Specifications
Hydrology Plans (Existing and Proposed Conditions)
Riverside Hydrologic Basin Planning Area Map
October 02, 2007 Page 3 of 14 Job No, 306 - 035 -13
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' 1.0 VICINITY MAP:
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2.0 PROJECT DESCRIPTION:
The subject site proposes to expand the existing Wal -Mart building from the current 149,723
square feet to 205,938 square feet. The developed property is irregular in shape and
encompasses approximately 19.96 acres. The site is located on the southwest corner of Route 79
and Apis Road in the City of Temecula area of the County of Riverside, California (see Vicinity
Map). The majority of the site is predominately level with no major changes in grade. Existing
drainage from the site flows southwestward into Murrieta Creek. The area of the proposed
building expansion is unpaved and graded to drain to an existing RSD D -14 graded inlet. The
inlet is connected to an existing 18" rcp storm drain and discharged to an existing 36" rcp storm
drain. Drainage from the 36" rcp is discharged just southeast of the property to the existing
Temecula Creek Channel. No modifications will be to the existing 36" storm drain or the
Temecula Creek Channel for the proposed building expansion.
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3.0 SITE MAP
Please see the attached Site Map for the Wal -Mart expansion project. A summary of the Site
Map is explained below.
3.1 DRAINAGE
The proposed building expansion will be constructed at the unpaved portion of the
property. Asphalt and PCC concrete will constructed at the remaining unpaved area to
add additional parking for the proposed building expansion. This area was originally
graded and designed for this proposed building expansion; therefore, no significant
changes in grade will be necessary for storm drain discharge. The original hydrology
report from the previous City of Temecula under Plot Plan 16535 was used as reference
for existing conditions data. The original basin at the proposed expansion site will need
to be divided into small sub basins to accompany the proposed building expansion and
parking. This will lower the discharge at the existing RSD D -14 graded inlet and benefit
the property by reducing the chance of inlet failure. Two proposed 12" by 12" graded
inlets will be installed upstream of the existing inlet to reduce the grade for ADA
requirements. The proposed inlet will connect to a 12" pvc storm drain inlet and discharge
to the existing drainage system. This will be done by connecting the proposed 12" pvc to
the existing RSD D -14 graded inlet. Three additional storm drain pipes will installed for
discharge of the proposed loading dock and roof drains for the building expansion. Three
additional storm drains will be installed down stream and connected to the existing 36"
rcp storm drain southeast of the property adjacent to the Temecula Creek. No
modifications or changes in grade will made to Temecula Creek.
3.2 IMPROVEMENT PLANS
There are no improvement plans required for construction at this time. All work is to be
done on site and involves minimal grading only.
3.3 EXISTING STORM DRAIN SYSTEM
As discussed earlier in this section, the existing drainage system will be used for this
expansion and will remain unchanged. The proposed expansion will not affect current
conditions to the existing storm drain system. Additional storm drains will be added to the
existing storm drain system for roof drain connection and added parking lot. (See
attached Existing Hydrology Map)
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' 4.0 POLLUTANTS AND CONDITIONS OF CONCERN
t4.1 WATERSHED
The project site is located in the Riverside Region, Santa Margarita Hydrologic Unit,
' Penchanga Hydrologic Area, and Pauba Hydrologic Sub -Area identified as 902.51. The
nearest watershed listed in the 303(d) list is the Temecula Creek, which lists Nitrogen,
Phosphorus, and Total Dissolved Solids as the local pollutants.
' 4.2 POLLUTANTS FROM THE PROJECT AREA
' The potential pollutants from the Wal -Mart Expansion project as identified in the
Development and Redevelopment Projects Storm Water Management Standards
Requirements Manual for a Commercial Development (See Section 11) are as follows:
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Protect Category
General Pollutants
Commercial Development
- Organic Compounds
- Trash & Debris
- Oxygen Demanding Substances
- Oil & Grease
4.3 IMPAIRED DOWNSTREAM BODIES OF WATER
• The possible downstream body of water that could be affected by this project is
the Temecula Creek just south of the project. The drainage flows indirectly to
Temecula Creek by existing storm drain pipes. Temecula Creek is listed in
Section 303(d) with Nitrogen, Phosphorus, and Total Dissolved Solids as the
possible pollutants.
' 4.4 IMPACT OF HYDROLOGIC REGIME
' From the existing to proposed hydraulic condition there is no increase in hydraulic
conditions for the 100 year /24 hour storm event. Therefore, there is no increase in
discharge from the proposed building expansion. The potential for anticipated pollutants
will remain the same once construction is complete. In addition, any best management
practices that are implemented will vastly reduce the chances of potential anticipated
pollutants to further impact the local environment.
If some pollutants do make it past the proposed BMP's, the possible downstream body of
water that could be affected by this project is minimal to Temecula Creek. As stated in
Section 4.3, the Temecula Creek is listed in Section 303(d) as a contaminated or
stressed body with a priority of "low." The potential pollutants from this project could
impact this body of water if they were to migrate through the existing storm drain system
and transported to Temecula Creek.
' Please refer to the attached contaminated or stressed waters figures from the California
Regional Water Quality Control Board, Riverside Region:
' Figure 1: 1998 303(d) Waters
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' Figure 2: 2002 303(d) Waters
Figure 3: 1998 + 2002 303(d) Waters
' According to Table 4: Combined 1998 and 2006 Section 303(d) Update, the watershed,
902.51 or Riverside Region, Santa Margarita HU, and Penchanga HA is not listed.
Stressors may or may not be present, but it is not on this list as a potential problem for
' storm water run -off from our project. The pollutants of concern as defined in the Land
Development Manual — Storm Water Standards and in this report do not match this; and
as such, our project will not cause any further impaction on the watershed. Therefore
there should not be any additional erosion or habitat impact.
' 5.0 SITE DESIGN BEST MANAGEMENT PRACTICES
' The list of Site Design Best Management Practices (Development and Redevelopment Projects
Storm Water Management Standards Requirements Manual) contains the following (at a
minimum):
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Maintain Pre - Development Rainfall Runoff Characteristics
• Minimize Impervious Footprint
• Conserve Natural Areas
• Minimize Directly Connected Impervious Areas
• Maximize Canopy Interception and Water Conservation
Protect Slopes and Channels
• Convey Run -off
• Vegetate Slopes
• Stabilize Permanent Channel Crossings
• Install Energy Dissipaters
5.1 MAINTAIN PRE- DEVELOPMENT RAINFALL RUNOFF CHARACTERISTICS
This section includes a few different site design criteria that are designed to improve
storm event drainage patterns. Each one is discussed below.
5.1.1 MINIMIZE IMPERVIOUS FOOTPRINT
This sight was already developed and all measures to minimize impervious
footprints are not possible. The area that will be replaced by the expansion is ac
pavement.
5.1.2 CONSERVE NATURAL AREAS
All natural areas remaining in the property will not be improved and therefore will
remain in place.
5.1.3 MINIMIZE DIRECTLY CONNECTED IMPERVIOUS AREAS
As discussed in the previous sections, the building expansion will use the
existing storm drain system. Minimal grading will be required and no changes to
the existing drainage pattern will be necessary for the building expansion. All
designs to minimize directly connected impervious areas was determined not
possible for this project.
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5.1.4 MAXIMIZE CANOPY INTERCEPTION AND WATER CONSERVATION
No landscaping is proposed with this project and no additional roof drains will be
installed for the building expansion.
5.2 PROTECT SLOPES AND CHANNELS
There are no slopes or channels proposed to the site.
5.2.1 CONVEY RUN -OFF
Not applicable.
5.2.2 VEGETATE SLOPES
Not applicable.
5.2.3 STABILIZE PERMANENT CHANNEL CROSSINGS
There are no proposed channel crossings.
5.2.4 INSTALL ENERGY DISSIPATORS
Not applicable
6.0 SOURCE CONTROL BEST MANAGEMENT PRACTICES
The list of Source Control Best Management Practices (Development and Redevelopment
Projects Storm Water Management Standards Requirements Manual) contains the following (at a
minimum):
• Provide Storm Water Conveyance System Stenciling and Signage
• Employee Training
6.1 DESIGN OUTDOOR MATERIAL STORAGE AREA TO REDUCE POLLUTION
One pallet and bail storage area will constructed at the south end of the proposed
expansion. This storage area will covered to minimize pollutants from discharging into the
existing storm drain system.
6.2 DESIGN TRASH STORAGE AREAS TO REDUCE POLLUTION INTRODUCTION
All existing storage areas to the site were designed to be covered to reduce pollution
introduction.
6.3 EMPLOY INTEGRATED PEST MANAGEMENT PRINCIPLES
Because this project is the reconstruction of an existing functional commercial
development, there is no need for additional pest management. Use of native
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landscaping, a corporate pest management program, and education should be sufficient
to address pest control measures as defined in the Development and Redevelopment
Projects Storm Water Management Standards Requirements Manual.
6.4 USE EFFECTIVE IRRIGATION SYSTEMS AND LANDSCAPE DESIGN
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There is no additional irrigation systems proposed for this building expansion. Therefore,
the use of effective irrigation systems is not required.
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STORM WATER CONVEYANCE SYSTEM STENCILING AND SIGNAGE
6.5 PROVIDE
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The existing inlets shall be stenciled with appropriate downstream warnings.
6.7 Employee Training
Employees will be trained to implement best management practices as described in the
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report. In addition acknowledgement of minimizing any trash and debris from entering the
proposed storm drain system.
7.0 STRUCTURAL TREATMENT BEST MANAGEMENT PRACTICES
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Structural Treatment Best Management Practices (Development and Redevelopment Projects
Storm Water Management Standards Requirements Manual) are slightly different than previous
categories of best management practices because they are applied to each project site on a case
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by case basis. Structural Treatment Best Management Practices are design considerations
instead of a list of suggestions. The following areas will be evaluated:
' • Basis for Selection
o Targeted Pollutants of Concern
o Pollutants Not Present
o Justification
o Exclusions
o Alternative Analysis
• Design Criteria (and calculations)
' • Pollutant Removal Information
• Literature References
• Maintenance Condition(s)
' 7.1 BASIS FOR SELECTION
The proposed area selected for the building expansion is currently developed and
minimal opportunity to include a higher number of site design BMPs. Instead, the existing
conditions dictate that the best solution is to implement a filtration system to the existing
' storm drain inlets affected by this expansion. The selected systems will need to address
all of the targeted pollutants of concern in the highest manner possible as defined in the
Development and Redevelopment Projects Storm Water Management Standards
Requirements Manual. Our potential pollutants of concern are included in Section 4.2
' and discussed below. The Structural Treatment Best Management Treatment will be to
utilize a combination filtration system, as discussed below.
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7.2 TARGETED POLLUTANTS OF CONCERN
The pollutants of concern as identified in the Development and Redevelopment Projects
' Storm Water Management Standards Requirements Manual can be found in Section 4.2
(above). The project design will need to target the following pollutants of concern:
Sediments, Nutrients, Organic Compounds, Trash & Debris, Oxygen Demanding
' Substances, Oil & Grease, and Pesticides. In order to accomplish the reduction,
treatment, and overall prevention of these potential pollutants entering the existing storm
drain system, the Development and Redevelopment Projects Storm Water Management
Standards Requirements Manual recommends the use of filtration as a best management
' practice to handle this pollutant of concern (Development and Redevelopment Projects
Storm Water Management Standards Requirements Manual).
' 7.3 POLLUTANTS NOT PRESENT
The following pollutants of concern as defined in the Development and Redevelopment
' Projects Storm Water Management Standards Requirements Manual can be ignored for
this project they are not present for this proposed commercial developement:
• Heavy Metals
Organic Compounds
' 7.3.1 TRASH AND DEBRIS
As defined in the General Categories of Water Pollution (Development and
Redevelopment Projects Storm Water Management Standards Requirements
Manual), Trash and debris is considered as a secondary pollutant of concern on
the basis of land uses. Trash and debris should be anticipated from parking lot
areas. The usage of catch basin inserts and will minimize the potential trash and
debris from entering the public storm drain system
7.4 JUSTIFICATION
Because this project is the demolition of an existing parking area and construction of a
new building for commercial purposes, there is a concern for the pollutants listed in
' Section 8.2 (above). However, since the redevelopment proposed by this project will not
significantly alter the pattern of the storm water flow on the site, and the area of
development limits the use of natural or earthen structural best management practices, it
' has been justified that this particular site is best suited for a storm water filtration system
to treat any potentially polluted runoff.
We recommend Flo -Gard and Flo -Gard + Plus Catch Basin Inserts for the proposed
' catch basins (See attachments for product specification sheets) and roof drain
downspouts. This system is an effective treatment technology that utilizes filters and
screens to remove potential pollutants of concern from storm water before it reaches the
' local water sources. Flo -Gard utilizes Fossil Rock, a silicate adsorbent filter medium
treated to collect petroleum hydrocarbons (oil and grease). The devices incorporate a
debris trap designed to retain floatable pollutants during high flow periods plus an initial
filtering bypass for moderate flows and an ultimate bypass for peak design flows. The
' installed device will not impede the drainage inlet's peak design flow even after the
device has reached its pollutant storage capacity. The system will be installed by the
contractor and the owner will regularly check and maintain the devices.
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' 7.5 EXCLUSIONS
This project has no Structural Treatment Best Management Practice exclusions as
defined in the Development and Redevelopment Projects Storm Water Management
Standards Requirements Manual.
1 7.6 ALTERNATIVE ANALYSIS
' The targeted pollutants of concern are: Sediments, Nutrients, Organic Compounds, Trash
& Debris, Oxygen Demanding Substances, Oil & Grease, Bacteria and Viruses and
Pesticides. The most effective Structural Treatment Control Best Management Practices
1 for these pollutants as listed in Development and Redevelopment Projects Storm Water
Management Standards Requirements Manual is a filtration system. This project will treat
the pollutants of concern with an on site filtration system.
' 7.7 DESIGN CRITERIA
' The system that we are recommending to meet the design criteria of our proposed
Structural Treatment Control Best Management Practice for the site will screen out Trash
& Debris and filter out, clean or capture Sediments, Nutrients, Organic Compounds,
Oxygen Demanding Substances, Oil & Grease, and Pesticides. This will occur before the
' storm water collected on site will be allowed to enter the existing storm drain system.
For the County of Riverside the 851" Percentile Storm is specified as the storm event to
' treat. Treatment is to be provided either on a volume basis or a flow basis. For a volume
based analysis the County has provided an 851" Percentile Isopluvial Map for the 24 -hour
storm runoff. For the flow -based analysis the County has accepted an intensity factor (I)
of 0.2 inches per hour as the value to be used in the Rational Method equation O =CIA to
' determine flow rates in cubic feet per second. We recommend utilizing Flo -Gard and Flo -
Gard + Plus Catch Basin Inserts for the proposed catch basins and roof drain
downspouts. This method requires that your flow -based structural BMPs have the
I capacity to treat the maximum flow rate of runoff produced from a rainfall intensity of 0.2
inches per hour of storm event. The system will be installed by the contractor and the
owner will be required to regularly maintain the devices. Specific information for the Flo -
Gard and Flo -Gard + Plus inserts at the end of this report.
7.9 POLLUTANT REMOVAL INFORMATION
' 7.9.1 DRAINAGE INSERTS
The drainage inserts we have selected for this project shall utilize a silicate
adsorbent filter medium capable of collecting and retaining non - soluble pollutants
including, but not limited to, petroleum hydrocarbons (oil and grease). This filter
' medium shall be contained in separate removable and displaceable containers
that can easily be replaced without removing the filter liner. The specified
filtration devices shall be designed to separate petroleum hydrocarbons from
sediment, debris, and trash. This filtration device shall not rely on collected
sediment, debris, trash or filter liner as the medium for the removal of petroleum
hydrocarbons.
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Job No. 306 - 035 -13
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These high capacity filter devices incorporate debris traps designed to retain
floatable pollutants during high flow periods and contain both and initial filtering
bypasses for moderate flows and an ultimate bypass for peak design flows. The
installed device "shall not" impede the drainage inlets peak design flow prior to or
after the device has reached its pollutants storage capacity.
The device shall incorporate a removable filter liner made from a woven
polypropolene monofilament geotextile with a clean flow rate of 675 gallons per
minute (1.50 cubic feet per second) per square foot. The use of a non -woven
geotextile filter liner shall not be allowed. These filter liners shall contain the filter
media.
The filter media shall be a hydrophobic silicate adsorbent material that is treated
to attract and retain petroleum hydrocarbons and other non - soluble pollutants. It
shall be non - biodegradable and non - leaching and contain no hazardous
ingredients as defined by the U.S. Environmental Protection Agency (EPA), U.S.
Occupational Safety and Health Administration (OSHA), and the World Health
Organization (WHO). The device exceeds the 85% percentile flow from the
project site as summarized in section 8.8.
7.10 MAINTENANCE CONDITION
Maintenance is a major part of any successful structural treatment best management
practice. The system that we are recommending is no exception. An advantage to
bioswales is that no extensive maintenance is required, however efficiency increases
when swales are well maintained. An effective maintenance program should include the
following key components:
Drainage Inserts
• Regular visual inspection (3 times /year)
• Cleaning out of the Flo -Gard Insert and disposal of pollutants (2 times /year)
• Change and disposal of Adsorbent Filter Medium (annually)
BMPs shall be inspected, cleaned and repaired when necessary, prior to and during each rainy
season, including conducting an annual inspection no later than September 30'" each year.
Should any of the project's surface or subsurface drainage /filtration structures or other BMPs fail
or result in increased erosion, the owner shall be responsible for any necessary repairs to the
drainage /filtration system or BMPs and restoration of the eroded area. Should there be a need
for repairs or restoration, the owner shall submit a repair and restoration plan to the Executive
Director to determine if an amendment or new coastal development permit is required to
authorize such work.
9.0 CONCLUSION
It is our conclusion that the most effective means of treating the targeted pollutants of concern for
the Wal -Mart building expansion project is to use a series of filtration inserts to the existing inlets
affected potential Trash & Debris and Sediments, and to clean the potential Nutrients, Organic
Compounds, Trash & Debris, Oxygen Demanding Substances, Oil & Grease, and Pesticides.
The process we recommend is drainage inserts, which are designed to separate petroleum
hydrocarbons from sediment, debris, and trash. Because this process has low removal efficiency,
we will include a bioswale of medium efficiency. With drainage inserts and a bioswale in series,
this system will have high removal efficiency and provide effective treatment of storm water
runoff.
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10.0 ENGINEER OF WORK
The Engineer of Work for the Wal -Mart building expansion project is Peter B. Ritchey with
Nasland Engineering.
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1 Peter Bowen Richey
RCE 67652
Expires 06 -30 -09
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' October 02, 2007 Page 14 of 14 Job No. 306 - 035 -13
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Flat grated inlet
Curb inlet
' FloGard +PLUS® / Product Specifications
The FloGard +PLUS® is a multipurpose catch basin insert designed to capture sediment,
debris, trash & oils /grease from low (first flush) flows.
' A (dual) high -flow bypass allows flows to bypass the device while retaining sediment and
larger floatables (debris & trash) AND allows sustained maximum design flows under extreme
weather conditions.
FloGard +PLUS® inserts are available in sizes to fit most industry- standard drainage inlets
(...flat grated, combination, curb and round inlets).
FloGard +PLUS® catch basin inserts are recommended for areas subject to silt and debris as
well as low -to- moderate levels of petroleum hydrocarbon (oils and grease). Examples of such
' areas are vehicle parking lots, aircraft ramps, truck and bus storage yards, corporation yards,
subdivision streets and public streets.
' Questions? Contact KriStar at (800) 579 8819
4/07
' GENERAL SPECIFICATIONS FOR MAINTENANCE OF
FLO -CARD +PLUS® CATCH BASIN INSERT FILTERS
' SCOPE:
Federal, State and Local Clean Water Act regulations and those of insurance carriers require that
stormwater filtration systems be maintained and serviced on a recurring basis. The intent of the
regulations is to ensure that the systems, on a continuing basis, efficiently remove pollutants from
stormwater runoff thereby preventing pollution of the nation's water resources. These specifications apply
to the FloGard +Plus® Catch Basin Insert Filter.
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RECOMMENDED FREQUENCY OF SERVICE:
Drainage Protection Systems (DPS) recommends that installed Flo -Gard +Plus Catch Basin Insert
Filters be serviced on a recurring basis. Ultimately, the frequency depends on the amount of runoff,
pollutant loading and interference from debris (leaves, vegetation, cans, paper, etc.); however, it is
recommended that each installation be serviced a minimum of three times per year, with a change of filter
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medium once per year. DPS technicians are available to do an on -site evaluation, upon request.
RECOMMENDED TIMING OF SERVICE:
DPS guidelines for the timing of service are as follows:
1. For areas with a definite rainy season: Prior to, during and following the rainy season.
2. For areas subject to year -round rainfall: On a recurring basis (at least three times per year).
3. For areas with winter snow and summer rain: Prior to and just after the snow season and during
the summer rain season.
4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring
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basis (no less than three times per years).
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SERVICE PROCEDURES:
1. The catch basin grate shall be removed and set to one side. The catch basin shall be visually
inspected for defects and possible illegal dumping. If illegal dumping has occurred, the proper
authorities and property owner representative shall be notified as soon as practicable.
2. Using an industrial vacuum, the collected materials shall be removed from the liner. (Note: DPS
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uses a truck- mounted vacuum for servicing Flo -Gard +Plus catch basin inserts.)
3. When all of the collected materials have been removed, the filter medium pouches shall be
removed by unsnapping the tether from the D -ring and set to one side. The filter liner, gaskets,
stainless steel frame and mounting brackets, etc. shall be inspected for continued serviceability.
Minor damage or defects found shall be corrected on -the -spot and a notation made on the
Maintenance Record. More extensive deficiencies that affect the efficiency of the filter (tom liner,
etc.), if approved by the customer representative, will be corrected and an invoice submitted to the
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representative along with the Maintenance Record.
4. The filter medium pouches shall be inspected for defects and continued serviceability and replaced
as necessary and the pouch tethers re- attached to the liner's D -ring. See below.
5. The grate shall be replaced.
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' REPLACEMENT AND DISPOSAL OF EXPOSED FILTER MEDIUM AND COLLECTED
DEBRIS
' The frequency of filter medium pouch exchange will be in accordance with the existing DPS- Customer
Maintenance Contract. DPS recommends that the medium be changed at least once per year. During the
appropriate service, or if so determined by the service technician during a non - scheduled service, the filter
medium pouches will be replaced with new pouches. Once the exposed pouches and debris have been
removed, DPS has possession and must dispose of it in accordance with local, state and federal agency
requirements.
Note: As the generator, the landowner it ultimately responsible for the proper disposal of the exposed filter medium and
debris. Because the filter media likely contain petroleum h)drocasbons henry metals and other hmrr#id polluaans, the
materials rust be treated as an EPA Class 2 Hazardous Waste and property disposed of DPS relieves the landowner of the
actual disposal task andlinnides certification of its completion in accordance with appropriate regulations.
' DPS also has the capability of servicing all manner of catch basin inserts and catch basins
without inserts, underground oil/water separators, stormwater interceptors and other such devices.
All DPS personnel are highly qualified technicians and are confined space trained and certified.
' Call us at (888) 950.8826 for further information and assistance.
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HoGards
A multi -model flexible -body catch basin insert designed to collect silt, debris and petroleum hydrocarbons from water
runoff.
The working chamber of the FloGarda is made of durable geotextile fabric which is easily replaced and provides for
flexibility, ease of maintenance and economy. It is designed to collect silt and debris, as well as petroleum hydrocarbons
(oils and greases). As with all FloGarde series filters, the standard FloGarde performs as an effective filtering device at low
' flows ( "first flush ") and, because of the built -in high flow bypass, will not impede the system's maximum design flow.
FloGardo inserts are available in sizes to fit most industry- standard drainage inlets (...flat grated, combination, curb and
round inlets).
FloGarde catch basin inserts are recommended for areas subject to silt and debris as well as low -to- moderate levels of
petroleum hydrocarbon (oils and grease). Examples of such areas are vehicle parking lots, aircraft ramps, truck and bus
' storage yards, corporation yards, subdivision streets and public streets.
' US Patent No. 6,976,808
Questions? Contact Kristar at (800) 579 -8819. 06106
I
RoGerd® Filter
' installed
NOTES:
1. storage caFedty reflects 80% of invention soils
collection pnortu bypti s.
2 Flhered flow rote includes a safety lector aft
3. FloCAmb Can& Basin Flher inuns are evallable
m Me standard sees (see above) or in custom sues.
Call far malls on =am sum insects.
4. FbGerdD filter inserts should be used in conluneean
vdM a regular maintenance program Peler to
manufacturers recommended mmmer m guidelines.
US Patent No 6.976,808
Model No.
Inlet I.D.
Grate O.D.
Solids
Storage
Filtered Flow
(cis)
Total Bypass
- (cis)
FF -12D
12" x 12"
14" x 14"
0.3
0.5
0.2
FF -V64D
14" x 14"
16" x i6"
03
0.5
02
FF -16D
16" x 16'
18" x 18"
0.5
0.8
0.4
FF -1624D
16" x 24"
16"x 26"
0.6
1.1
0.6
FF -18D
18" x 18"
20" x 20"
0.5
as
0.5
FF -1824D
18" x 24"
20" x 24"
0.6
1.1
0.6
FF- 1836SD
18" x 36"
18" x 40"
1.0
1.7
1.1
FF- 1836DGO
18" x 36"
18" x 40"
1.0
1.7
1.1
FF- 1848DGO
48" x 48"
18" x 52"
1.2
2.1
1.4
FF -21 D
22" x 22'
24" x 24"
0.7
1.2
0.7
FF -240
24" x 24"
26" x 26"
0.8
1.4
0.9
FF -24DGO
24" x 24"
18" x 36"
0.8
14
0.9
FF -24300
24' x 30"
26" x 30"
1.0
1.7
1.1
FF -24360
24" x 36"
24" x 40"
.1 1
1.9
1.3
FF- 2436DGO
24" x 36"
24" x 40"
1 1
1.9
1.3
FF- 2448D(2pc)
24" x 48"
26" x 48"
1.3
2.3
1.6
FF -30D
30" x 30"
30" x 34"
1.1
1.9
1.3
FF- 36D(2pc)
36" x 36"
36"x40"
1.3
2.3
1.6
FF- 3648D(2pc)
36 "x48"
40" x40"
1.6
2.7
1.9
FF -480 (2 pc)
48 "x48"
48" x 52"
1.8
3.2
2.3
FLOGARN
CATCH BASIN FILTER INSERT
(Flame Mount)
FLAT GRATED INLET
KnStar Enterprises, Inc, Santa Rasa, CA (800) 579 -8819
C
oaorzc;�
Vii''' —\ ,1
` DP5\ "N
' GENERAL SPECIFICATIONS FOR MAINTENANCE OF
FLO -GARD® CATCH BASIN INSERT FILTERS
' SCOPE:
Federal, State and Local Clean Water act regulations and those of insurance carriers require that stormwater
' filtration systems be maintained and serviced on a recurring basis. The intent of the regulations is to ensure
that the systems, on a continuing basis, efficiently remove pollutants from stormwater runoff thereby
preventing pollution of the nation's water resources. These Specifications apply to the Flo -Gard® catch
basin insert filters.
' RECOMMENDED FREQUENCY OF SERVICE:
Drainage Protection Systems (UPS) recommends that installed Flo -Gard® Catch Basin Insert Filters be
' serviced on a recurring basis. Ultimately, the frequency depends on the amount of runoff, pollutant loading
and interference from debris (leaves, vegetation, cans, paper, etc.); however, as a minimum, it is
recommended that each installation be serviced a minimum of three times per year, with a change of filter
medium once per year. DPS technicians are available to do an on -site evaluation, upon request.
RECOMMENDED TIMING OF SERVICE:
' DPS guidelines for the timing of service are as following:
1. For areas with a definite rainy season: Prior to, during and following the rainy season.
2 For areas subject to year-round rainfall: On a recurring basis (at least three times per year)..
3. For areas with winter snow and summer rain: Prior to and just after the snow season and during
the summer rain season.
4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring
basis (no less than three times per year).
' SERVICE PROCEDURES:
1. The catch basin shall be visually inspected for defects and possible illegal dumping. If illegal
dumping has occurred, the proper authorities and property owner representative shall be notified
as soon as practicable.
2. The catch basin grate will be removed and set to one side. Then either:
a. An industrial vacuum shall be used to carefully remove all sediment and debris from
' the filter portion of the unit, or
b. By grasping the filter's stainless steel frame. the entire filter shall be carefully removed
from the catch basin. The filter medium pouches shall then be removed by unsnapping
the tether from the D -ring and set to one side. Being careful not to spill, the contents
shall be removed.
3. The filter liner, gaskets, stainless steel frame and other components shall be inspected for
continued serviceability. Minor damage or defects found shall be corrected on- the -spot and a
notation made on the Maintenance Record. More extensive deficiencies that affect the efficiency
of the filter (torn liner, etc.), if approved by the customer representative, will be corrected and an
invoice submitted to the representative along with the Maintenance Record.
4. The filter medium pouches shall be inspected for defects and continued serviceability and replaced
as necessary. See below.
5. If removed, the filter device shall be replaced in the catch basin and the grate replaced.
REPLACEMENT AND DISPOSAL OF EXPOSED FILTER MEDIUM AND COLLECTED
DEBRIS
' The frequency of filter medium pouch exchange will be in accordance with the existing DPS- Customer
Maintenance Contract. DPS recommends that the medium be changed at least once per year. During the
appropriate service, or if so determined by the service technician during a non - scheduled service, the filter
medium pouches will be replaced with new pouches. Once the exposed pouches and debris have been
removed, DPS has possession and must dispose of it to accordance with local, state and federal agency
requirements.
Note: As the generator, the landowner is ultimately responsible for the proper disposal of the exposed
,filter medium and debris. Because the filter medias likely contain petroleum hydrocarbons, heavy
metals and other harmful pollutants, the materials must be treated as an EPA Class 2 Hazardous Waste
and properly disposed of. DPS relieves the landowner of the actual disposal task, and provides
certification of its completion in accordance with appropriate regulations.
DPS also has the capability of servicing all manner of catch basin inserts and catch basins without
' inserts, underground oiUwater separators, stormwater interceptors and other such devices. All DPS
personnel are highly qualified technicians and are confined space trained and certified. Call us at
(888) 950 -8826 for further information and assistance.
I
1
1
[1
1
11
1
FloGardo Downspout Filter
A multi -model building- mounted filter designed to collect particulates, debris, metals and petroleum hydrocarbons from
rooftop stormwater runoff.
The working chamber of the FloGarde Downspout Filter is made of a durable dual -wall geotextile fabric liner
encapsulating an adsorbent which is easily replaced and provides for flexibility, ease of maintenance and economy. It is
designed to collect particulates and debris, as well as metals and petroleum hydrocarbons (oils and greases). As with all
FloGarda filters, the FloGarde Downspout Filter performs as an effective filtering device at low flows ( "first flush ") and,
because of the built -in high flow bypass, will not impede the system's maximum design flow.
FloGard® Downspout Filters are available in sizes to fit common sizes of downspouts and may be mounted in (recessed)
or on (flush) a wall.
FloGard® Downspout Filters are recommended for ultra -urban sites with little to no property area outside of the building
perimeter. Examples of such areas are downtown buildings and parking garages.
See full specifications for details.
�Pc
a
IAPMO Listing No. 4868
Questions? Contact Kristar at (800) 579 -8819.
06/06
i
!,,.i1iY1 pOWNfFOYT RlF0. iTS1FM
;Y
Model No.
Inlet ID
dia. , in
Box OD
in x in x in
Solids Storage
Capacity cu ft
Filtered Flow
m
Bypass Capacity
m
FG -DS4
4
14 x 29 x 7.5
0.35
30
145
FG -DS6
6
14 x 29 x 7.5
0.35
85
425
FG -DS8
8
22 x 33 x 17.5
1.70
185
915
FG -DS10
10
22 x 33 x 17.5
1.70
325
1,650
Notes:
1.
Storage capacity reflects 80% of maximum
solids collection prior to impeding fdtenng
bypass.
2
Filtered flow rate includes a safety factor
of 2.
3
RoGardO Downspout Filters are available with
standard Fossil Rock or other custom adsorbents.
4.
RoGardw series filters should be used in
con]unccon with a regular maintenance
program Refer to manufacturer's
recommended maintenance guidelines
IAPMO Usbng No 4868
Patent Pending
FLOGARD®
DOWNSPOUT FILTER
KnStar Ernerpnses, Inc., Santa Rosa, CA (800) 579 -8819
tams
I
1
1
[1
1
,KR�S'�rge
w
GENERAL SPECIFICATIONS FOR MAINTENANCE OF
FLOGARD® DOWNSPOUT FILTERS
SCOPE:
r�raorccnoro °ro
DPS \u
I
Federal, State and Local Clean Water Act regulations and those of insurance carriers require that
stormwater filtration systems be maintained and serviced on a recurring basis. The intent of the regulations
is to ensure that the systems, on a continuing basis, efficiently remove pollutants from stormwater runoff
thereby preventing pollution of the nation's water resources. These Specifications apply to the FloGardo
Downspout Filter.
FREQUENCY OF SERVICE:
Drainage Protection Systems (DPS) recommends that installed FloGard® Downspout Filters be serviced on
a recurring basis. Ultimately, the frequency depends on the amount of runoff, pollutant loading and
interference from debris (leaves, vegetation, cans, paper, etc.); however, it is recommended that each
installation be serviced a minimum of three times per year, with a change of filter medium once per year.
DPS technicians are available to do an on -site evaluation, upon request.
RECOMMENDED TIMING OF SERVICE:
DPS guidelines for the timing of service are as follows:
1. For areas with a definite rainy season: Prior to, during and following the rainy season.
2. For areas subject to year -round rainfall: On a recurring basis (at least three times per year).
3. For areas with winter snow and summer rain: Prior to and just after the snow season and during
the summer rain season.
4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring
basis (no less than three times per year).
SERVICE PROCEDURES:
I. The FloGardo Downspout Filter shall be visually inspected for defects and possible leakage.
2. The FloGardo Downspout Filter access door shall be opened. The filter tray shall be carefully
pulled out using the handle and set on the floor over a drop cloth.
3. The collected materials in the upper filter shall be inspected, and then removed from the liner
using an industrial vacuum or by dumping into an appropriate DOT approved container.
4. When all of the collected materials have been removed from the upper filter, it shall be removed to
allow access to the lower filter medium.
5. The filter liner, gaskets, stainless steel frame and mounting brackets, etc. shall be inspected for
continued serviceability. Minor damage or defects found shall be corrected on- the -spot and a
notation made on the Maintenance Record. More extensive deficiencies that affect the efficiency
of the filter (torn liner, door gasket damage, etc.), if approved by the customer representative, will
be corrected and an invoice submitted to the representative along with the Maintenance Record.
6. The filter medium shall be inspected for defects and continued serviceability and replaced as
necessary. See below for disposal.
7. The filter components and tray shall be replaced in the housing and the door closed and secured.
I
1
tREPLACEMENT AND DISPOSAL OF EXPOSED FILTER MEDIUM AND COLLECTED
DEBRIS
' The frequency of filter medium exchange will be in accordance with the existing DPS- Customer
Maintenance Contract. DPS recommends that the medium be changed at least once per year. During the
appropriate service, or if so determined by the service technician during a non - scheduled service, the filter
' medium will be replaced with new material. Once the exposed pouches and debris have been removed,
DPS has possession and must dispose of it in accordance with local, state and federal agency requirements.
11
1
L1
Note: As the generator, the landowner is ultimately responsible for the proper disposal of the exposed
filter medium and debris. Because the filter media likely contain petroleum hydrocarbons, heavy metals
and other harmful pollutants, the materials must be treated as an EPA Class 2 Hazardous Waste and
properly disposed of. DPS relieves the landowner of the actual disposal task, and provides certification
of its completion in accordance with appropriate regulations.
DPS also has the capability of servicing all manner of storm drain filters, catch basin inserts and
catch basins without inserts, underground oil/water separators, stormwater interceptors and other
such devices. All DPS personnel are highly qualified technicians and are confined space trained and
certified. Call us at (888) 950 -8826 for further information and assistance.
� I
k i 10 fo;,
0 l(),O
cy
O 70-
. ......
-0
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0
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C
10
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o 0
j 10
r 7,
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A'.70,7
IT
m mm W_, -mi- 10711)9
6 5 10
/0,71
7oo,5,
6
IVY
0 70,7
0�?
A, 10 74
6
k 10,71 1�
loc
126,391 SF
EXISTING WAL71VIART
I (d
F =71.867 -1 0
i�
BASIN CO i ��'r
-AREA=0.5 AC i_
0
0=5603 CFS ,
10
0=7.—ATRWCFS ,,,`
a --p
rmm V"" V--T- mm m-m— TIT= as s i T77= MOM
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0
SA
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1=4
r _,j= rmmn mmm
V
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, /Q�7�- _
----------
�,
�� 0=22.25 CFS,
Q =33.12 CFS
vo
1, 1 . :
2.9 ACRES 1 � 11
:10
EXISTING Rl,
BASI4,(D ,-D— 14 INLET
1.8% �,,R.
AREA= 1.9 AC //c-t-l-l�
0=3.92 CFS
L _lr I I qtr-
10
0 -5.8 CFS
100 A, 48, 72 SF
Vf_
, ;1 AC S
4�.
±24,879 SF
> 10- 0.6 ACRES
001 0 `__ .19 V BASIN CO
_ �r _ _ "0%5
AREA =0.6 AC
-. �,.� t Now mm
7 04 V,
0#0 13, 0=11.30 CFS
vi
Ar /0 "o
9
3
00 '00=1.94 CFS
010 0 Ic
0 'k /0 EXISTING
(;,g
CURB llfVL E-Po6cl, locg
00-
'706c?
.9
10,2� 4�02J 'v 9
-9
_ my
p0
6-
0, z, - i
TEMECULA CREEK CHANNEL
40 0 40 80 120 16
SCALE 1 40'
EXHIBIT A
HYDROLOGY MAP
EXISTING CONDITIONS
r r IN, la >a 4' k
( x _{
oj
y..
' it ?.
Af 1 y *U7 !
�e f
s tea ✓p7 ' t''sy l ° i ![�� At��
W-
k poi ,.,6
EXISTING WAL7MAF
FF=719867 1'. 0 0
_
BASIN 0
AREA =0.6 AC
0 =1.30 CFS
10
0 =1.93 CFS
vo
� -- --
<
DIZA IN
str
.,�.,....,..�. `"°�.°°" �._ i � t t � ? t � } _ate;:;:►'
..........
0=22.25 CFS
0=1.93 CFS
vo
ECU.
REEK CHANNEL
IIN (D.
�02 AC
0 CFS
8 CFS
,SIN O
k=0.8 AC
.00 CFS
.95 CFS
.; BASIN (D
- — ' AREA =0.4 AC
0 =1.08 CFS
0 =1.60 CFS
EXISTING
`b-URB I l LE ', , =6 5
LEGEND
PATH OF TRAVEL
BASIN
BASIN BOUNDARY
O
40 0 40 80 120 160
SCALE 1 " = 40'
EXHIBIT B
HYDROLOGY MAP
PROPOSED CONDITIC