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Home My WebLink AboutIR 9319INFORMAL REPORT TO CITY COUNCIL MEMBERS No. 9319 To the Mayor and Members of the City Council October 26, 2010 a "'� Page 1 of 2 r 8 SUBJECT: CONTRACT FOR PROFESSIONAL SERVICES FOR NATURAL 1812 GAS AIR QUALITY STUDY FINAL WORK PLAN WITH EASTERN RESEARCH GROUP, INC. The purpose of this Informal Report is to provide an update on work performed under the Contract for Professional Services for Natural Gas Air Quality Study Final Work Plan with Eastern Research Group, Inc. (CS #40728) as authorized by M &C C -23475 on August 3, 2010 and recommend a Final Point Source Testing work plan modification. Eastern Research Group, Inc.'s (ERG) Final Work Plan outlined point source testing, ambient air testing, dispersion modeling, and full build out estimates. Point Source Testing was targeted to include 75% of gas well sites within the City of Fort Worth as well as compressor stations while also assessing a gas processing facility, saltwater disposal well, gas well completions, gas well fracturing operations, and salt water recycling units. This assessment process includes using an Infrared (IR) Camera to screen all site components for larger emissions, using a toxic vapor analyzer (TVA) on a minimum of 10% of site components plus all IR camera detected emissions, using a HighFlow sampler on all IR camera and TVA detected emission points, and collecting approximately 50 summa canisters for speciation of the gas composition (i.e., determine benzene content). Point source testing commenced on August 30 and the first samples from the ambient air monitoring network were collected on September 4. ERG was provided a listing of active well pads and each active line compressor stations. ERG then used a random number generator to assign unique identifiers to each of these sites /stations. The listing was then sorted by the unique identifier and site visit schedule was developed. Point source testing has been more labor intensive than originally thought primarily due to many sites simply having more physical components (e.g., valves, fittings, flanges, vents) than anticipated thus requiring more time to thoroughly assess. As of October20t' approximately 178 well pad sites have been visited, including 8 compressor stations, one gas processing plant, one drilling operation, one salt water disposal well and one flow back operation. To better relate the progress to date a Point Source Testing Map is attached that represents the estimated site visits through October 20. Also, an Ambient Air Network Map is attached to communicate the location of that network. ERG has performed these visits in a random and unannounced manner. At the current assessment rate it is clear the 75% target will not be reached within set costs and schedule. Staff requested that ERG provide the City with options to complete the project in a scientifically sound manner. Included with the list of options ERG was required to make their recommendation to complete the point source testing phase while preserving the integrity, representativeness and validity of the results. ERG recommended the City proceed with the current point source testing protocol, under the current project budget by modifying the target from 75% to 50% of sites. These final weeks in the ISSUED BY THE CITY MANAGER FORT WORTH, TEXAS INFORMAL REPORT TO CITY COUNCIL MEMBERS No. 9319 To the Mayor and Members of the City Council October 26, 2010 Page 2 of 2 a SUBJECT: CONTRACT FOR PROFESSIONAL SERVICES FOR NATURAL GAS AIR QUALITY STUDY FINAL WORK PLAN WITH EASTERN RESEARCH GROUP, INC. field will focus on reaching the 50% target as well as completing all other field work called for under the Point Source Testing Plan. This study is the first to conduct Point Source Testing and is producing comprehensive data not previously available. The City's Ambient Air Network is designed similarly to the U.S. Environmental Protection Agency's (EPA) School Air Toxics Program; however we are collecting samples more frequently (once every three days) and directly targeting gas well activity with 24- hour sampling. With the shift from 75% to 50% target on the Point Source Testing, the scientific validity of the results will not be affected primarily due to the thoroughness and representativeness of the testing. The point source testing set an aggressive target of 75% and as such is not possible within time constraints and costs. Staff recommends accepting the recommended point source testing program modification thus reducing the target from 75% to 50% of the sites. if you have any questions please contact Michael A. Gange, Assistant Director of TPW — Environmental Services Division at extension 6569. Dale A. Fisseler, P.E. 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Moderate Level Rendon Crowioy Site 6 Moderate Level Ambient Air Network A Monitor Sites Fort Worth City Limits F Adjacent Cities 0 2.5 5 7.5 10 Miles base data: TPW - ENVIRONMENTAL SERVICES base map: CITY OF FORT WORTH GIS L --- — --- ``Roanoke Trophy Club Flower Mound Lewisville A Westlake J High Level U Coppell Haslet Southlake Pecan Acres CDP L Keller i t .Grapevine Eagle Mountain CDP r Coffeyville -d Irving Watauga -i-rd Saginaw Blue Mound North Richland Hills 7' Euless F Bedford Hurst Site 1 t Lake Worth Site 4 "..-,Richland Hills --------- __j Background High Level Haltom City Site 2 River Oaks Mobile Sources Site 3 Fort Worth Permitted-Sites -J Westover Hills P anteg o-_ 7 IL Arlington Benbrook i Dalworthington Gardens Grand Prairie Forest Hill Edgecliff Village Kenneda �Everma r) Site 7! Moderate Level Rendon Crowioy Site 6 Moderate Level Ambient Air Network A Monitor Sites Fort Worth City Limits F Adjacent Cities 0 2.5 5 7.5 10 Miles base data: TPW - ENVIRONMENTAL SERVICES base map: CITY OF FORT WORTH GIS