Application of the FDOT Special Use Methodology on an Interstate 75 Project

TRB Summer Meeting Williamsburg, VA

July 11, 2006

Presented By:

Win Lindeman & Mike Mulbarger Environmental Science Associates1715 N. Westshore Blvd., Suite 780

Tampa, Florida33607

Decision Time

Special Use Location Methodology

Location Map

PD&E Phase Noise Study Report

Three Oaks Community Park

I-75

Reasonableness Matrix

Item Criteria Input Units1 Length of proposed barrier Number in feet

2 Height of proposed barrier Number in feet

3 Multiply item 1 by item 2 Number in ft2

4 Average amount of time that a person stays at the site per visit

Number in hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

Number of people

6 Multiply item 4 by item 5 Number of person-hours

7 Divide item 3 by item 6 Number in ft2/person-hour

8 Multiply $35,000 by item 7 Amount in $

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

Yes/No

10 If item 9 is no, abatement is reasonable √

11 If item 9 is yes, abatement is not reasonable √

12 Estimated cost of the barrier (multiply item 3 by $25.00) Amount in $

Sample of Park Usage Information

Three Oaks Field Usage January-December

*p.m. usage starts after 6:00pm

Field Usage for January

Sunday Monday Tuesday Wednesday ThursdayFrida

y SaturdayUsag

e

a.m usage 150 60 60 100 60 60 450 940

*p.m. usage 75 450 450 450 450 450 150 2475

Average Weekly Total= 3415

          Average Monthly Total=   13660

Receiver Array

Proposed Barrier Location

Recommended Noise Barrier

Barrier

Location

Barrier Length (feet)

Barrier Height (feet)

Barrier Stations

Average Noise

Reduction

Total Estimated

Cost

Three Oaks Community

Park

2,740 18 682+10 to

709+50

7.7 $1,233,000

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier

3 Multiply item 1 by item 2

4 Average amount of time that a person stays at the site per visit

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

6 Multiply item 4 by item 5

7 Divide item 3 by item 6

8 Multiply $35,000 by item 7

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

10 If item 9 is no, abatement is reasonable

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier 18 ft

3 Multiply item 1 by item 2

4 Average amount of time that a person stays at the site per visit

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

6 Multiply item 4 by item 5

7 Divide item 3 by item 6

8 Multiply $35,000 by item 7

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

10 If item 9 is no, abatement is reasonable

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier 18 ft

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

6 Multiply item 4 by item 5

7 Divide item 3 by item 6

8 Multiply $35,000 by item 7

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

10 If item 9 is no, abatement is reasonable

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier 18 ft

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

2.5 hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

6 Multiply item 4 by item 5

7 Divide item 3 by item 6

8 Multiply $35,000 by item 7

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

10 If item 9 is no, abatement is reasonable

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier 18 ft

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

2.5 hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

1139 people

6 Multiply item 4 by item 5

7 Divide item 3 by item 6

8 Multiply $35,000 by item 7

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

10 If item 9 is no, abatement is reasonable

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier 18 ft

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

2.5 hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

1139 people

6 Multiply item 4 by item 5 2897.5 person-hr

7 Divide item 3 by item 6

8 Multiply $35,000 by item 7

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

10 If item 9 is no, abatement is reasonable

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier 18 ft

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

2.5 hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

1139 people

6 Multiply item 4 by item 5 2897.5 person-hr

7 Divide item 3 by item 6 17.0 ft2/person-hr

8 Multiply $35,000 by item 7

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

10 If item 9 is no, abatement is reasonable

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier 18 ft

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

2.5 hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

1139 people

6 Multiply item 4 by item 5 2897.5 person-hr

7 Divide item 3 by item 6 17.0 ft2/person-hr

8 Multiply $35,000 by item 7 $595,000

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

10 If item 9 is no, abatement is reasonable

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier 18 ft

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

2.5 hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

1139 people

6 Multiply item 4 by item 5 2897.5 person-hr

7 Divide item 3 by item 6 17.0 ft2/person-hr

8 Multiply $35,000 by item 7 $595,000

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

No

10 If item 9 is no, abatement is reasonable

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

2.5 hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

1139 people

6 Multiply item 4 by item 5 2897.5 person-hr

7 Divide item 3 by item 6 17.0 ft2/person-hr

8 Multiply $35,000 by item 7 $595,000

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

No

10 If item 9 is no, abatement is reasonable √

11 If item 9 is yes, abatement is not reasonable

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

2.5 hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

1139 people

6 Multiply item 4 by item 5 2897.5 person-hr

7 Divide item 3 by item 6 17.0 ft2/person-hr

8 Multiply $35,000 by item 7 $595,000

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

No

10 If item 9 is no, abatement is reasonable √

11 If item 9 is yes, abatement is not reasonable N/A

12 Estimated cost of the barrier (multiply item 3 by $25.00)

Reasonableness Matrix for Three Oaks Community Park Noise Barrier

Item Criteria Input Units1 Length of proposed barrier 2,740 ft

2 Height of proposed barrier

3 Multiply item 1 by item 2 49,320 ft2

4 Average amount of time that a person stays at the site per visit

2.5 hours

5 Average number of people that use this site per day that will receive at least 5 dBA benefit from abatement at this site

1139 people

6 Multiply item 4 by item 5 2897.5 person-hr

7 Divide item 3 by item 6 17.0 ft2/person-hr

8 Multiply $35,000 by item 7 $595,000

9 Does item 8 exceed the “abatement cost factor” of $711,382/person-hr/ ft2?

No

10 If item 9 is no, abatement is reasonable √

11 If item 9 is yes, abatement is not reasonable N/A

12 Estimated cost of the barrier (multiply item 3 by $25.00) $1,233,000

Public Involvement Steps with Lee County

• Obtain Park Usage Information

• Met with Park and County Officials

• Solicited Input on Color, Texture and Landscaping

Public Involvement Results

• The barrier was favored by Lee County

• The color selected was Dark Beige

• The texture selected was Ashlar Stone with smooth horizontal band and smooth posts

• Landscaping was encouraged, to include Creeping Fig

Barrier Aesthetics Selected

Conclusions

• A wide array of receiver points are required

• Single-use facilities rarely qualify for abatement

• Usage data can be difficult to obtain

• The methodology is relatively simple to apply

Any Questions?

• When’s the break?• When’s lunch??• Are you done yet???