From: Schmidt, Michael F
Sent: Tuesday, April 29, 2008 3:14 PM
To: Sawyer, Charles; Wagner, Richard; Lu, Silong; McClelland, Scott; Cook, Charles; Bacca-Cortes, Gabriel; CMWallen; Beeson, William; Martin, W. Kirk
Cc: Youngblood, Barbara
Subject: FDEP TMDL Model Support Caloosahatchee River Section 5 Comments

Hi everyone, Barbara is forwarding the scanned versions of my comments. Here is a summary:

 

  1. We need to check the HSPF model – I am not sure that it is calibrated at S-78. I also understand from Rich that there may be some issues with measurements at S-78 (TSS)?

 

  1. DSLLC needs to use the standard FDEP report format. Table and figure references need to be corrected (there are several duplicates, they are not sequential, they need to be 5.X).

 

  1. I thought we were using the term hydrologic units rather than subwatersheds. Subwatershed has been used for tidal versus freshwater Caloosahatchee.

 

  1. Figures of the Study Area should be at least 8.5 by 11 inches. We had better versions as our starting point from our Nutrient Assessment Study. Figures should include labels of major roads, major structures (at least the big three), water bodies (e.g., Lake O), study area, hydrologic units.

 

  1. There are several incomplete sentences.

 

  1. The BMP write-up is missing. Were BMPs included in HSPF? How? (e.g., reduced loading factors proportional to the percentage of BMPs) They should be accounted for in the model. We need a lot more here.

 

  1. The water quality parameters are inconsistent and sometimes nonstandard (e.g., nitrate and nitrite are generally combined, organic and ammonia N are generally referred to as TKN, differentiate the versions of BOD, add TP). We need to consolidate and adjust for consistency.

 

  1. DSLLC needs to zoom in on the figures (use the entire scale) so the reader can see the results and comparisons.

 

  1. We should have some statistical comparisons for goodness of fit (e.g., where is the Nash-Sutcliffe coefficient for HSPF?). What about non-parametric tests for the water quality results?

 

  1. When a water quality standard exists, highlight that line on the graph (e.g, 5.0 mg/L for DO).

 

  1. How does WASP compare to EFDC?

 

We need to correct most of these prior to issuance along with comments from Tony, Charles, Rich, and Silong. We’ll probably submit this later than tomorrow. Thanks!

 

Michael F. Schmidt, P.E. BCEE
Vice President
CDM
8659 Baypine Rd, Suite 200
Jacksonville, FL 32256
E-mail: schmidtmf@cdm.com
Office: 904-527-6735
Fax:     904-731-0465
Cell:    904-614-0860