.\.1:. ,~, . .'",.' ;~,d ~'.it'. l' ;;¡~: ,~.- ,.- ..... .-- :l:.~ .(" "~~. THE EDWARDS AQUIFER~.,~; ~'¡, ':.,'¡'., '\-"'--"", SAN ANT01V1Õ'.'- MANDA . TES.-' ", FOR. - , ~ " .-: ""':"., ~.~:, . .. :,. " ,;.'" ~ .;;:.::';/'-:" " -~ . "'" WATER QU.JTY PROTECtION " .:.r ..?" :,..;1, ., , ~ , . J t~~T.~ .'.~ ~~~. .J .June 1994 CITY OF SAN ANTONIO OFFICE OF THE MAYOR June 22, 1994 TO TH CITIZENS OF SAN ANONIO: Since Januai, 1994, the San Antonio City Counci along with the chais of the Plannng Commssion, Zoning Commssion and the San Antonio Water System Board of Trustees have been meeting as a Commttee of the Whole to discuss water qualty in reference to land use activities over the Edwards Recharge Zone. Our discussion focused on the area withi the City's jurisdiction, which is less than 2% of the total recharge zone. Our review included functional responsibilities related to staf and other agencies as well as explorig practica recmmendations which would update their efforts since the 1987, The Edwards Aquifer: Perspecives for Local and Regional Action report and its resolution on non-degradation of the aquifer. These organitional steps coupled with increasingly stricter guidelies for pollution control and prevention best amplifY the need for continued study of potential contamination and ongoing actions to educate and implement activities for prevention. The commttee found that its approach must be expanded to include a comprehensive watershed management approach that takes into account federal, state and local requirements. This new approach would allow for prudent, responsible land use activities that with proper enforcement and oversight can occur over the recharge zone, transition zone and drainage areas as well as creeks and streas which flow through Bexar County. This approach coupled with physical programs such as drainage and flood plain management wil ultimately protect water quality for the aquifer and the streams and watercourses that cross Bexar County. Water quality protection of our creeks and streams, now a national mandate as the stormwater program afects us al wi dimsh the potential for pollution as raiwater and other sudace materials channel throughout the County over sensitive areas. Therefore, protecon of the Edwards Aquifer is important to al of us. It begins with education about how the system works, an awareness of its unique characteristics and a respect for its greatness. Sjpcerely, ø j~ l~jJt i~f/ ~Ol~ I 'Mayor MAILING: CITY OF SAN ANTONIO, TEXAS P.O. BOX 839966 CITY HALL (210) 299-7060 SAN ANTONIO, TEXAS 78283-396 FAX # (210) 270-4077 TABLE OF CONTENTS Acknowledgements . .. .. -0 -0 -0 -0 . -0 . -0 . Current Status . 1 Edwards Recharge Zone Statistics ..................................... 2 Description of Edwards Geology ...................................... 4 Rules and Policies ................................................ 16 Work Program ................................................... 48 Committee of the Whole ............................................. 63 . -0 -0 -0 . -0 -0 . -0.. -0 -0 -0 . -0 . -0 . -0 . -0 -0 -0 . -0 . -0 -0 . -0 -0 . -0 . -0 . -0 -0 -0 . -0 . -0 Recommendations ................................................ 86 Issues ....................................................... 87 Index of Issues . 88 i. Regulatory Requirements ................................. 91 Chapter 35--UDC ..................................... 92 Stormwater ......................................... 109 Chapter 34-- Water ................................... 116 II. Organiational Programming .............................. 127 Texas Natural Resource Conservation Commission. ........... 128 Techncal Improvements ............................... 135 Emergency Measures ............ .. 144 III. Potential Activities ..................................... 148 Future Study . .. 149 Implementation Policy.......................................... 154 Index of Implementations ...... .. 155 i. Regulatory Requirements ................................ 157 Chapter 35--UDC .................................... 158 Stormwater ......................................... 181 Chapter 34-- Water ................................... 186 II. Organiational Programing .............................. 192 Texas Natural Resource Conservation Commission ........... 193 Techncal Improvements ............................... 198 Emergency Measures ..... .' . .. 206 III. Potential Activities ..................................... 210 Future Study . .. .. 211 TABLE OF CONTENTS Appendix. .. 216 Chronology .................................................... 217 Resolution of Non-Degradation . -0 . -0 -0 -0 -0 -0 . -0 . -0 . 231 Studies Preformed -0 . -0 . -0 . -0 . -0 -0 . -0 . -0 . -0 . -0 233 Table of Permitted Uses (1993) ..................................... 239 Public Hearing on Chapter 313--Edwards Rules ......................... 252 City Coullcil Resolution No. 94-13-12 . .. 254 City of San Antonio statement submitted on March 31, 1994 257 at TNRCC annual public hearing on Edwards Rules Chapter 313 Edwards Rules ........................................ 264 Identified Caves and Sinkoles in Bexar County ......................... 298 ACKNOWLEDGEMENTS The San Antonio Water System wishes to specially acknowledge the City Council of San Antonio, the San Antonio Water System Board of Trustees, the Chairman of Planning Commssion and the Chairman of Zoning Commssion for their involvement and support as the Commttee of the Whole in preparation of this document. City Council Mayor Nelson Wolff District One District Six Councilman Roger Perez Councilwoman Helen Ayala District Two District Seven Councilwoman Ruth Jones McClendon Councilman Bob Ross District Thee District Eight Councilwoman Lynda Bila Burke Councilman Bil Thornton District Four District Nine Councilman Henr Avila Councilman Howard Peak District Five District Ten Councilman Juan F. Solis, III Councilman Lyle Larson San Antonio_ Water System Board of Trustees Clifford E. Morton, Chairman Victor Miramontes, Trustee Diane D. Rath, Vice Chairan Pablo S. Escamila, Trustee Curtis E. Neal, Jr.,Secreta Christina L. Garcia, Trustee Mayor Nelson Wolff, Ex officio Chairman of Planning Commssion Chairman of Zoning Commission Phil Garay Michael A. McMahon i ACKNOWLEDGEMENTS "''''.t,\"If!''4å~'''''",\ #r"""" This report is øTi suIt of theJ'hard'~~k and personal dedication of a number of peo Ie. Special r'ecogni tiorl should go to the following: n/',,"" ~( San u ¡",P"'''''''"" y""".;".';;-. .~.~~ Jf"ø-'- ~\:.~ Joe A. Ace..es........................................................ P .E., PresidØ'n t/C.E.~Õ~'c~'",,,,,,,,, Rebecca Qulitanilla Cedillo..............................Vice President of Plannlig ) lH~:.~-c.;~C¡;."::~t~. Aqui ~t Studies Division Staff "\ \\ u R. Hal ty. .... .............................. .................... Manager, Aquifer St udies Di Ji,sion'c~~':i. K' M. Nixon 't, 'D K ren E. Stahn lJ ~J;i" Mi elle Marlar ");":è '~\ Pe er Z. Gatica \\ ;1 E Ii ~ater Depar~~ent Staff . ~\, 't iJ 3" ~y Aldean....... '.7¡1;~.... :~"''':,:'''''''''''''''''''''''''''''''''''' Director, Storm wa ter Depart:g,eni t F ank Salazar ,ø";'" ............,.,... .... ......... ............... ....Manager, Storm wa ter Departm~ent .¿Ø)~.f#~#" '-:q~~\,: r-'c":"';','-"",;,,,;-,,'l'¡"'''~''"~,'~ ~ I, ,i~i ø;' to 'øQ Planning Dep'~len t ~ ! ""~x~(,,,- " j!ß Dave Pasley ,AICP......................... ~'....... ..l......... ..DiEector of P I ann i n g"'t""m-AJ':''\'¡t, Ñ ,i i\ !1 San An tot:'¡ ~~'Fie D,,1 ep JÇt=1'~' m 1 t ,':$f'~ ii "'\~jl .£':0,_ ,(-' ¿j,Y Joe Cande ano.., ............I ~i ..¡;..........íi nl.' ............. ""'''':9. .,J............ h. ;'."H'-'"''As; is,t'~ Fire"".c,lnef .l' T e x as N at"l cra~I=RJeso I ii u r c Jkt5unsLrv~ ~ at io1.t:Ø IJ Co mm(' i st~idti: Richard Garci a,,,,,,,,,,;;,,,,,,,,,,,,,,,,,,,,,,, l""""'" ,Re~i onal Manager John Mauser...... ............'.1"r .". ,., .".,.,rn .".. .,1.,. ...~ """Fi~. ld Investigator ,Edwards Program Edwards taterí:r ~District~ii G~li ri1M Rick Illgner....................V................ "_:~.b~"Jl............. e:nJ,~ra anager ~ ,. ......."'ø,,,,,,.""r"'~.""""~. ~-"..''''''\''."._C''~0'".'h. Mike Albach...... .......... .'~':'::-................................ ..Di vision Manag'è'r"õ'f-..Rsla.nning .,",,,,,,~~=~.=g",~',,,,,, "~""~'.' " ,c="~="=~"'Y,,==;En~vLi''I''0'n~m'e'I:.t:al-~M'a''n'agg'e~;iri;g;¡:g', Pape-Dawson Engineers, Inc. Gene Dawson, Jr.................................................. .Engineer ii CURRENT STATUS EDWARDS RECHARGE ZONE STATISTICS EDWARDS RECHARGE ZONE STATISTICS March, 1994 Edwards Recharge Zone Area (All Figures Approximate) ~ Total 5 county. area 1500 sq. mi. 960,000 acres ~ Bexar County area 175 sq. mi. 112,000acres(11.6%) ~ City of San Antonio ERZ (Of Total) 28 sq. mi. 17,920 acres (1.8%) ~ City. of San Antonio ERZ (Of Bexar) 28 sq. mi. 17,920 acres (16.0%) ~ Shavano Park ERZ 1.92 sq. mi. 1,229 acres ~ ~ollywoOd Park ERZ 1.56 sq. mi. 998 acres ~ Hill Country Vilagt ERZ .58 sq. mi. 371 acres ~ Developed ERZ with San Antonio C.L. as%of San AntonioTotalERZ 21 sq. mi. 13,440 acres (75%) ~ Deyeloped ERZ with San Antonio C. L. as % of Bexar County Total 21 sq. mi. 13,440 acres (12%) ~ Underground storage ta sites on ERZ San Antonio City Limits 27 ~ Underground storage tank sites on TZ with San Antonio City Limits 110 ~ Single wall underground storage tank sites on . the ERZ with San Antonio City Limits 3 ~ Single wall underground storage ta sites. on the TZ with San Antonio City Limts 63 3 DESCRIPTION OF EDWARDS