Exh 2AAGENDA ITEM #2A
AUGUST 8, 2005
DRAFT FINAL PROJECT REPORT
Stormwater BMP Implementation and Public Education Program
Core City Improvement Project, Atlantic Beach, Florida
October 1, 2003 through June 1, 2005.
July 2005
Complete report
kept on file with the
City Clerk
AGENDA ITEM #2A
AUGUST 8, 2005
Table of Contents
STORMWATER BMP IMPLEMENTATION
AND PUBLIC EDUCATION PROGRAM
CORE CITY IMPROVEMENT PRO.lECT,
ATLANTIC BEACH, FLORIDA
INTRODUCTION
1 Executive Summary
Recommendations
BMP IMPLEMENTATION
'~ Baffle Box Specifications
Baffle Box Material Sample & Analysis
WATER QUALITY MONITORING AND ANALYSIS
Monitoring Equipment
3 Weather Monitoring
Feild Parameters
Analytical Methods and Parameters
STORMWATER ANALYSIS RESULTS
4 Rainfall data for each sampling event
SEDIMENT SAMPLING RESULTS
OPERATIONS AND MAINTENANCE PROGRAM
5 Baffle Box Inspections and Cleaning Data
Discontinued Stonnwater Discharge Areas
Debris Removal Figures
I PERMANENT ACKNOLEDGEMENT SIGNS
PUBLIC EDUCATION PROGRAM
7 Enviroscape Description
Teacher Evaluations
Stormwater Brochure
S:~.~~ .va:c; P1a;.~rzant 3~ A:.:ivi:y S;:cEt
8 I ATTACHMENTS
AGIrNDA ITEM #2A
AUGUST 8, 2005
I. Introduction
stormwater best management practices and public education are primary elements to
improving the quality of stormwater runoff. Best Management Practices, or BMP's, are planned
improvements of physical structures and maintenance techniques that result in an improved
quality of discharging stormwater. Public education programs are developed to make citizens
aware their part of the BMP plan. Proper use of pesticides and fertilizers on private properties
will positively impact the quality of the stormwater runoff. BMP implementation and continued
public education programs can effectively improve the water quality of impacted State waters,
protect local wildlife, and reduce the risk of environmental damage.
Pre-construction conditions allowed portions of the Core City area to directly discharge
untreated stormwater into the Atlantic ocean through out-fall boxes located on the beach at 8"'
and 10"' streets. The volume of the discharge also was causing serious erosion issues at
these discharge points. The City Plan to improve the physical conditions included improved
drainage, inverted crown roadways, better routing of stormwater conduits, and the installation of
nutrient separating baffle boxes at three discharge locations.
Nutrient separating baffle boxes were installed at 5"', and 7"' Streets along Sherry Drive
and at Pine Street all discharging into Howell Park. These devices are designed to improve the
quality of collected stormwater through the following:
• Slow stormwater moving through the box to separate and catch sediment.
• Filter stormwater of both organic and inorganic debris to reduce nutrient loading.
Filtering the stormwater before it'can enter the existing watershed traps large quantities
of pollutants making them accessible for removal with a reasonable amount of effort. Over the
course of this project, Operations and Maintenance procedures were developed to ensure the
best possible efficiency of the newly installed baffle boxes.
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AGENDA ITEM #2A
Executive Summary of Results AUGUST S, 2005
The goal of the Core City Improvement Program was to reduce the amount of untreated
stormwater discharging into State waters and improve the quality of stormwater collected. Newly
constructed drainage has diverted approximately 180 acres of the total 240 acre Core City
watershed that is equivalent to a 75% reduction of untreated stormwater discharge.
1. All collected stormwater discharge leading to the Atlantic ocean has been eliminated.
2. 75% additional collection and treatment for the Core City watershed.
3. Approximately 54% reduction of heavy metal discharge.
4. Approximately 53% reduction of pollutants such as excess nutrients.
5. Approximately 66% reduction of suspended solids.
Recommendations
Blue Water Environmental recommends that a continued monitoring plan be implemented for
the baffle boxes and additional sites throughout the Atlantic Beach watershed. A monitoring plan
having both automatic sampling and grab sampling combined for multiple sites along the path
of the watershed can identify problem areas that are not obvious.
There are additional filters available far the baffle boxes and open waterways to help reduce the
nitrate, phosphate and total suspended solids found discharging in collected stormwater.
Implementation of these filter types could further improve the overall stormwater quality
throughout the Atlantic Beach area. This reduction of nutrients would also reduce the
persistence of nuisance aquatic vegetation and algae blooms.
It is also our recommendation to continue the Public Education Program for students and the
adult community through homeowner presentations and public meetings. Public awareness is
?powerful tool when implementing a water quality improvement program. It is our direct
recommendation that FMB and Associates conduct such a program as a continuation of the
standards set forth in the Public Education portion of this project.