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HomeMy WebLinkAboutACSA199700001 Executive Summary 1997-05-07 COUNTY OF ALBEMARLE EXECUTIVE SUMMARY AGENDA TITLE: AGENDA DATE: ITEM NUMBER: Albemarle County Service Authority Jurisdictional Area- May 7, 1997 Key Commercial, Inc. ACTION: X INFORMATION: SUBJECT/PROPOSAL/REQUEST: Public hearing to amend the ACSA Jurisdictional Area to provide Water Only to Key West Subdivision located on CONSENT AGENDA: Tax Map 62, Sections 62B(1), 62B(2), and 62B(3) and ACTION: INFORMATION: Cedar Hills Subdivision located on Tax Map 62, Section 62C. ATTACHMENTS: Yes STAFF CONTACT(S): Messrs. Tucker, Cilimberg REVIEWED BY: BACKGROUND: The Albemarle County Board of Supervisors considered this request on April 2, 1997 (See April 2, 1997 staff report and attachments-Attachment A) and agreed to set this public hearing. The applicant, Key Commercial, Inc. requests jurisdictional area designation for water only for service to Key West Subdivision located on Tax Map 62, Sections 62B(1), 623(2)and 62B(3)and Cedar Hills Subdivision located on Tax Map 62, Section 62C. These two subdivisions are located off Route 20(Stony Point Road) just north of the Neighborhood Three Development Area. The applicant has stated that the request for the water only designation is due to the primary well serving the subdivisions being contaminated with a gasoline additive called Methyl Tertiary Butyl Ether (MTBE). The applicant has attempted to drill additional wells but they did not produce the water quantity needed to serve the neighborhoods. DISCUSSION: At its April 2, 1997 meeting, the Board of Supervisors requested that the Virginia Department of Health provide more specific information concerning its methodology of assigning design capacity for public water supply wells. The Virginia Department of Health has responded with a memo and a copy of the Waterworks Regulations (See Attachment B). This memo quantifies the inadequacy of the uncontaminated wells' capacity to meet the needs of Key West and Cedar Hills subdivisions. In addition, the applicant has provided a list of the parcels in the Key West and Cedar Hills Subdivisions to be served by public water (See Attachment C-To be handed out at meeting). RECOMMENDATION: Based on the comments in the staffs April 2, 1997 report, verification of a public health and safety issue and information since provided by the Virginia Department of Health, staff recommends amending the jurisdictional area map to allow for water only designation for the Key West and Cedar Hills subdivisions located on Tax Map 62, Sections 62B(1), 62B(2), 62B(3) and 62C (specific parcels to be provided at the meeting). cc: Key Commercial, Inc. Art Petrini Bill Brent David Hirschman James W. Moore III 97 091 • JUNTY OF ALBEMARLE (ATTACHMENT Ai EXECUTIVE SUMMARY 03-28-9'7A08 : 15 RcvD AGENDA TITLE: AGENDA DATE: ITEM NUMBER: Key Commercial, Inc. - Request to amend the Albemarle April 2, 1997 County Service Authority Jurisdictional Area. ACTION: X INFORMATION: SUBJECT/PROPOSAL/REQUEST: Consider holding a public hearing to amend the ACSA Jurisdictional Area to provide Water Only to Key West CONSENT AGENDA: Subdivision located on Tax Map 62, Sections 62B(1), ACTION: INFORMATION: 62B(2), and 62B(3) and Cedar Hills Subdivision located on Tax Map 62, Section 62C. ATTACHMENTS: Yes STAFF CONTACT(S): / Messrs. Tucker, Cilimberg REVIEWED BY: BACKGROUND: The applicant,Key Commercial, Inc. requests jurisdictional area designation for water only for service to Key West Subdivision located on Tax Map 62, Sections 62B(1),62B(2) and 62B(3) and Cedar Hill Subdivision located on Tax Map 62, Section 62C (See Attachment A). These two subdivisions are located off Route 20(Stony Point Road) just north of the Neighborhood Three Development Area and consist of a total of 228 lots(See Attachment B). The applicant has stated that the request for the water only designation is due to the primary well serving the subdivisions being contaminated with a gasoline additive called Methyl Tertiary Butyl Ether(MTBE). Also,the applicant added that the Department of Environmental Quality(DEQ) has not been able to determine the source of the MTBE and that the Virginia Department of Health (VDH)-Office of Water Programs recommends that the Albemarle County Service Authority (ACSA) furnish water to these subdivisions as a solution (See VDH report- Attachment C). According to a letter dated March 7, 1997 from Bill Brent,ACSA Executive Director,the applicant has attempted to drill additional wells but they did not produce the water quantity needed to serve the neighborhoods. Also, Mr. Brent added that putting a treatment system on the contaminated well will be costly project and its long term effectiveness is uncertain (Attachment D). DISCUSSION: The subject property for this request is not within a Development Area. The Comprehensive Plan provides the following concerning water service in the Rural Area: General Principle: Utilization of central water and/or sewer systems or the extension of public water or sewer into the Rural Area is strongly discouraged except in cases where public health and safety are at issue. Recommendation: Only allow changes in jurisdictional areas outside of designated Development Area boundaries in cases where the property is:(1) adjacent to existing lines;and(2)public health or safety is endangered. The subject property is not located adjacent to a water line. The nearest line is a 12 inch water line (Pantops water line) located approximately 6,000 feet south of the subdivisions that runs along Route 1421 (Elk Drive),just south of Darden Towe Park. Verification of endangerment to public health and safety is provided in the attachments. RECOMMENDATION: The applicant has actively sought alternative solutions to provide a replacement system by attempting to find a new well(s)to serve the neighborhoods. The Virginia Department of Health-Office of Water Programs has confirmed ground water contamination and has indicated that the best alternative to serve the subdivisions is a connection to the Pantops water line. Staff believes that the effect on the intent of the Comprehensive Plan of an amendment is minimal in that the jurisdictional area for public water will only be designated for those parcels in the Key West and Cedar Hill subdivisions currently served by the Key West Water Company. For these reasons, staff recommends proceeding to public hearing to consider amending the jurisdictional area map to allow for water only designation for the Key West and Cedar Hills subdivisions located on Tax Map 62, Sections 62B(1), 62B(2), 62B(3) and 62C. cc: Key Commercial, Inc. Art Petrini Bill Brent David Hirschman James W. Moore III 97.071 APPLICATION TO AMEND THE ,% 0V A IATTACH County of Albemarle rf9 T`--'artment of Planning and Community Development SERVICE AUTHORITY ® ,- 'clntire Road a JURISDICTIONAL AREASiN ,ttesville,VA 22902-45961P 6-5823 APPLICANT Name: k 1_y a rrl-�c r Ai C s Signature: F 4- . ,b.�-�-��.- `.�'�--1-�� Phone: `�17-2,6 g t �i M, 2 4 c fr)7 34 Address: K i f r-c 1:2 , r,4z oar-� 7c . rc6-4D S-r c - Vli-t. Iii-- , 22 ? i ( {fit-i_u' 1-1. flHj2-zgoZ CO-APPLICANT Name (or agent, if any): Signature: Phone: Address: JURISD TIONAL AREA DESIGNATION REQUESTED: Water and Sewer EKWater Only ❑ Water Only to Existing Structure(s) 0 Limited Service (Describe in Justification below) PROPERTY LOCATION (Address) K-- Y LL/ '1 .5 v 3 — n i zi' S 1 aic.) Tax Map(s)/Parcel Number(s): 5T00 Y A e s r-){ R O Q-f- 2 t 1✓o c) S VZ LQ S! 4- G 7= bF 1 L Ls .ve .61 V(Sr, CURREN SERVICE AREA DESIGNATION (If any) Water and Sewer ffg Water Only ❑ Water Only to Existing Structures 0 Limited Service sc r$L.) C.,ir:$. t-t-001 rs awn.1;Say VoTI b 1 Ci To i ,a /4-.9 VC)2 'F.' A c S..-, R oT i,t` K E y co H N.c rx.. ��coo c`^a A- JUSTIFICATION FOR REQUEST: r iJ i ff t T=A t-1 NO, f 1-1 R ir3 Po ik.4 P S H OW 0: h c,:.oa_TA►.4ri.sriTLor..9 or ! A =-,Q) I l,t)F- I9.)1(7'e Ui� )vJ 7-4 bJt?J/4..)K"106. ZJR s wiz, cZ f o ;r7P ---'+hr bi= , Fi fiq. Q©-f- 1"›,j=1am,J 1,gI.r To Di�T(2Mik!E _so Uric�:1 R C7. /Z Pti V ,5 /Er, ?77//l_r Yn j p (-2 o ty otx pi c 1 Um-lr.r2 PRof,,R i'l-/S \l- S:,F2-.a , q 1=‘,,,-)04 s..y f;it.t,r' ➢�, i 4U 1 Ttf. ,'2 /?1 1-119/2L C.OUti'T y 5/=F(i'r 6.0-L- a 0TN®U/2L77 f"i_iQeiI/s.1-7, Le)ft7l=t? To ,JJ y /.'1,F;57 A> / SQL..LJ'%l©,CJ, Csg-r�R v&2 For Staff Use Only DATE SUBMI 1"1"bD: 3 ".:71 O - 97 DATE $130 FEE PAID: U ?7 PROPERTY IS LOCATED (Check Appropriate): ,_,/ ❑ Inside or Outside a Growth Area? LZ Adjacent to SAJA? ❑ Inside or ❑Outside a Water-Supply Watershed? ErAdjacent to a Growth Area? Location and distance of water/sewer line proposed to provide service G n00✓ REQUEST FOR AMENDMENT ADOPTED: 0 Yes 0 No Date of Action Key Commercial Inc,. : tm62-p62�' 52B,�;• Ivil-kI-lLL. I,UUIV i I Water only to Exist. Str62B3;62C 46 /// Nrh' 1a Rye . ______,. _ s r' 'fin,. ,,\:;,. S .0 a .a:,: so lir ,o. , _ _,t:oZ .< /7 s f ` l. 3 ,�. soc '. . .�' 5 Of • \ % ‹k''''''' . '3*Vfittl$V \ . 5j4 2 .'' 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'''`• • ....., , \A, , :>:va`'t': K kq \. \• \\ 49 34C£ .� A �` • ,,,yk.2.,y. e.»� .::.,,'T 0 1d' .,K",sws;�-i",s ,..A�; ;. » \efio. cesis a5 �„,, ryl4:.mp,. aA}� ' Ye,. # ' s F.¢ - •., \` \ I 7� yn y,�3 at ' .6 .39°xvs,bi<,` .,. ..\ ,gui :\\\ �\ '•,•r``'':3d.;{t 'fr,•:ea:•:. .o? -F—cr- - - • `� 4 9 F \ I Y \ ». k' - — SERVICE AUTHORITY n��,, A. y A• JURISDICTIONAL AREAS MAP KEY Oi CfOligaittaieV? - ./ 1- 74 ‘' .)‘ 0.' ® /i1C \ WATER ONLY r i'. v, /j >gar,. f' `�fi�q �35 4ys" j/ r �:' /" , ® WATER AND SEWER il, t;' tIf 1111 WATER ONLY TO EXISTING STRUCTURES ji{ ' •: M 4/61, t„� These are existing structures as of the _ .`I'� ..V.:/, yes s �" ' ''�,�' �r%Ssmr:." f a�� '`�-' ` eBA adopted date, either 10-1-82 or 8-10-83 •'' c s2 i "9': �� Please see 'List of Existing Structures � :/�!% 6�:: Ir 32e 32C 32GL OR Development Rights' for specific e .-"-- structures and.dates. ;, a'1 s fit }. :/,s:f;�ww ./, ss u.3+t:;Ei �ngG:;?f. '.5,.: ABBI21\. 'SRO'/ .. �' // el X':,k gggi 31 ]08 NV !y � y :ct'3:n .:�Y. yz A. i 000: !>: z` '; �_ r'� LIMITED SERVICE :s:.i%..:::.. I `.yiy�.,,• �>>>• \/ Please see "List of Existing Structures OR __ ��; r � z2 \• Development Rights" for specific limitations. . 1 li,ii,:g .:•..,.........---....-„........,................,...,......„. e o �4 e Y�'!. ,77 M® r __f zs- 40=n.9,/ .3/ , fp „ . ,o. _,o. 4.4404, ....0.^.4 „ ...... .\ a ' :. 23A Cf"61a •2 » atfa u '" .o w� :ie : ; t9 t . 410101104 /\/r► `; se Y N ��� /Aw ys* S .: 2S - A a t► tr \,/ : ;es17� 4 i 26 266 79 SM.( IN rUT CHARLOTTESVILLE,0 . SECTION 62 �-_ ��_ �,7 AND RIVANNA DISTRICTS KEY WEST SUBDIVISION ASSOCIATION MEETING March 17, 1997 James W. Moore III, P.E. Virginia Department of Health- Office of Water Programs 131 Walker Street Lexington, Virginia 24450 (540) 463-7136 KEY WEST SUBDIVISION MTBE EVENT SUMMARY 1. VDH receives odor complaint from Key West resident on October 29, 1996 2. VDH Inspector responds to complaint on October 30, 1996 and collected two distribution system water samples for Volatile Organic Chemicals (VOC) analysis based upon detected odors. Initial opinion is that the odors are confined to portions of the distribution system and may be the result of a cross connection, spill, etc. Note that all previous VOC analysis from wells (conducted on an annual frequency) indicated no detects. Instructed owners to flush portions of the distribution system. 3. A follow-up site visit is made to Key West on November 6, 1996 after indications of odor from well number 1. We now suspect that the problem is with the source water and not a distribution system problem. Water samples are collected for VOC analysis from wells 1 and 2. 4. Sample results received on or about November 19, 1996 confirm Methyl Tertiary Butyl Ether (MTBE) in well number 1. The results for well number 2 indicated non detectable. Well number 1 is taken out of service. Because groundwater contamination was confirmed, the Department of Environmental Quality was notified. DEQ is currently conducting an investigation to attempt to discover the source of the contamination. 5. Additional samples are collected from wells 1, 2, and 3 on December 2, 1996 6. Meeting with VDH, DEQ and waterworks owners held on December 3, 1996 to discuss contamination event, determine corrective strategy, and investigation into possible cause. Initiated design of activated carbon units for wells at wells 1 & 2. 7. Additional samples are collected from wells 1, 2, and 3 on December 17, 1996 8. January 14, 1997 - DEQ "Release Investigation" final report is completed. Results of the investigation indicate no known source of the contamination. 9. Additional samples are collected from wells 1, 2, and 3 on January 15, 1997. 10. Meeting of Key West Owners Association on January 21, 1997 to summarize events, discuss all monitoring results, explain corrective strategy and answer questions. 11. Well number 4 being developed & pump tested. Samples collected on January 21, 1997. 12. Additional samples are collected from wells 1, 2, and 3 on February 5, 1997. KEY WEST EVENT SUMMARY CONT. 13. Meeting with VDH, DEQ and waterworks owners held on February 12, 1997 to re-evaluate contamination event and corrective strategy. Initiated action to formally approach ACSA for water service to Key West. 14. Additional samples are collected from wells 1 and 2 February 12, 1997. 15. Design of carbon units is completed. Engineering plans and specifications are received by Department of Health on March 6, 1997. The project is currently under technical review by VDH and a construction permit will be issued in the near future. 16. March 6, 1997 meeting is held with DEQ, VDH, Key West and the Albemarle County Service Authority. Initial discussion on extending water service from the Pantops area to Key West. This option is currently being pursued. See Attached Summary of Monitoring Results Historical VOC Monitoring at Key West: August 11, 1993 ND July 26,1994 ND August 3,1995 ND Reduced Monitoring in 1996 to once every 3 years KEY WEST SUBDIVISION - MTBE MONITORING SUNIlVIARY Sample Date V4'ell"�#1 WeIl` 2 Drell#/3 �?Vell 4= Digfribution . v�,. ��n � w;:��� �., .. ,.,ea....a� , .. .. .. 10/30/96 -- -- -- -- 14.2 11/6/96 11.4 ND -- -- -- 12/2/96 81.3 13.2 ND -- -- 12/17/96 47 7.1 ND -- -- 1/15/97 23.3 3.7 ND -- -- 1/21/97 -- -- -- ND -- 2/5/97 12.6 1.22 ND -- ND 2/12/97 17 3.3 -- -- -- Notes: All Results are in ug/L or PPB The 2/5 sample analysis(wells 1 &2) was performed by Toxikon Corporation, West Palm Beach, Fl Ethylbenzene, Total Xylenes, diisopropylether, &C3 Benzenes detected in the 12/2 sample from well #1&2 diisopropylether detected in the 12/17 , 01/15, and 02/12 samples from well#1 only • ; PUBLIC HEALTH IMPLICATIONS OF MTBE IN DRINKING WATER 1. MTBE is currently NOT regulated in drinking water. There is no primary maximum contaminant level (MCL) established for MTBE. 2. The majority of health related studies of MTBE has been related to air pollution and the potential health effects of inhalation. The main concern of these studies is related to workers in petroleum refineries where MTBE is utilized in the formulation of gasoline. 3. The Environmental Protection Agency (EPA) has issued a draft health advisory for MTBE in drinking water. The adult lifetime exposure concentration in the draft is 70 parts per billion or 0.070 mg/1. 4. The highest measured MTBE concentration in well number 2 was 13.2 parts per billion (0.013 mg/1) on December 2, 1996. The MTBE concentration has been less than 5 parts per billion (0.005 mg/1) in the last three samples. 5. Baset upon the currently available information VDH believes that there is little cause for concern with the current level of MTBE in the distribution system (i.e. less than 5 parts per billion) in the Key West drinking water. 6. VDH is working with EPA and other sources to get as much information as possible related to the health effects of MTBE in drinking water. If there is any indication that the current thinking is incorrect, the treatment units will be installed. Interim Recommendations to Consumers Please be assured that the waterworks owners and VDH are working to resolve this situation as quickly as possible. From a regulatory standpoint the water meets all current standards; however, we realize that firm answers regarding the health impacts of MTBE are not available. If you have concerns you may want to consider using bottled water for drinking and cooking or install a point of use activated carbon treatment unit in your home. You can call the VDH - Office of Water Programs at (540) 463-7136 if you have questions about treatment units. • KEY WEST SUBDIVISION PROPOSED COURSE OF ACTION 1. Complete work on well number 4 and place into operation ASAP 2. Operate waterworks using wells 3 and 4 supplemented by well 2 as needed 3. Keep well number 1 off line 4. VDH will review plans and specifications and issue a Construction Permit for the Activated Carbon treatment units for wells 1 and 2 5. Continue to monitor VOC's in all wells on a monthly frequency 6. If connection to Albemarle County Service Authority becomes a viable alternative - proceed with that option as a permanent solution 7. If connections to Albemarle County Service Authority becomes not viable - proceed with search and development of additional groundwater sources as the permanent solution 8. Should monitoring results show a significant increase in the concentrations of contaminants proceed immediately with the installation and operation of the Activated Carbon treatment units file:h:\key1.doc KEY WEST SUBDIVISION CORRECTIVE ACTION OPTIONS Option 1 Develop and place into operation additional groundwater sources. Discontinue wells 1 and 2 as long as water quality analyses indicate the presence of unregulated VOC's. Currently well number 3 produces approximately 15 gpm. The pump test for existing well number 4 indicated a reliable yield of 19 gpm. Wells number 3 and 4 will only produce approximately 27,000 gpd and can not supply adequate water to the Key West Subdivision (average water demand of 50,000 to 60,000 gpd). As such this option will require the development of additional source(s). Option 2 Design and install treatment facilities for wells 1 and 2. The treatment needed would be a combination of activated carbon contactors and disinfection. The Department of Environmental Quality is providing assistance with this option. While properly designed and operated activated carbon treatment is capable of removing MTBE and other organic compounds, VDH does not consider this to be the best option. Some of our concerns include: 1) The concentrations of contaminants could increase, either gradually over time or very suddenly. Should this occur, the activated carbon contactors may have to be redesigned or the carbon exchanged on a frequent basis; 2) Long term costs of operation and maintenance; and 3) Difficulty in performing routine monitoring of contaminants. This option should be implemented only if there are no other viable options. Option 3 Connection to the Albemarle County Service Authority. This option would involve extending a water main from the Pantops area along Route 20 to serve Key West. There are many administrative and economic problems associated with this option. Some of these include: 1. Key West is NOT in the current ACSA service area. Extending water service into this area would require concurrence from the Albemarle County Board of Supervisors. 2. The existing distribution system in the Key West subdivision does not meet current minimum construction standards of the ACSA. 3. Preliminary cost estimates to just extend a 12 inch water line from Pantops to Key West are in the range of $400,000 to $450,000. Additional costs would include connection fees for each service connection ($1533) plus the cost of any distribution system improvements (if required). :.age 47 , Virginia Department of Health ,•j a DH ,�,NU�T : ,d �,o. Bureau of Toxic Substances • P.O. Box 2448, 1500 East Main Street, Room 124 Richmond, Virginia 23218 (804)786-1763 FACT SHEET ON METHYL TERTL4RY BUTYL L E i HER (NfTBE) GENERAL NF0R ATI0N Motor vehicle exhaust in the U. S. is the largest individual source of carbon monoxide (CO) and ground level ozone (03) emissions. The U. S. Environmental Protection Agency (EPA) estimates that motor vehicle emissions account for 75% to 90% of the CO pollution and roughly 50% of the 03 pollution in various regions of the United States. In the 1990 amendments to the Clean Air Act (CAA), Congress mandated that EPA issue regulations that would require gasoline to be reformulated with specified amounts of oxygenates. Oxygenates are substances that provide oxygen to gasoline thereby reducing tailpipe emissions of CO and 03 from vehicles. The regulations were subsequently developed through negotiations with industry, federal and state governments, and environmental and consumer groups. These regulations resulted in two new formulations of gasoline with increased oxygen content. One, called "oxygenated fuel" or "oxyfuel", contains a minimum of 2.7% additional oxygen by weight, and is designed to control emission of CO during winter months only. The second, called "reformulated gasoline" or "RFG", contains a minimum of an additional 2% of oxygen by weight, a maximum benzene content of 1% by volume. -. and a maximum of 25% of aromatic hydrocarbons by volume, and is designed to control 03 pollution and other air toxics. Oxyfuel has been mandated by the EPA for nonattainment areas and is now being used in 39 cities in 21 states during winter months only (since November 1, 1992). In Virginia, oxyfuel was used in northern Virginia during the winter months only between November 1, 1992 and March 31, 1994. Its use ended because northern Virginia had reduced its CO to attainment levels. RFG has also been mandated by the EPA for nonartainment areas and is now being used year-round in the nine metropolitan areas in the country with the worst 03 pollution (since January 1, 1995). In addition, several states, including Virginia, voluntarily opted into the program. RFG has been used in Richmond, Northern Virginia, and Hampton Roads areas since January 1, 1995. The two major oxygenates currently in use are methyl tertiary butyl ether (MTBE) with 65% market share, and ethanol (grain alcohol) with 35% market share. Oxygenates help fuels burn cleaner and more completely, thereby reducing levels of CO and 03- forming compounds via the tailpipe emissions. The EPA has estimated that the use of oxyfuel will reduce emissions of CO • by 95% and the use of RFG will reduce ernicsions of 03 precursors by 15%. Oxyfuel contains 15% MTBE or 7.7 0 ethanol, and RFG-contains 11% MTBE or 5.7% ethanol. MTBE is a colorless, flammable liquid with a t.erpene-like odor. It has an odor threshold of 0.06 pars per million(ppm) or 0.2 milligram per cubic meter (mg/m') in air. It is miv-ible in gasoline and soluble in water, alcohol, and ether. It has relatively high vapor pressure and a low octanoUwater partition coefficient. USES • MTBE is an additive used in oxyfuel or RFG. It has been in use in premium gasoline in the U.S. since the late 1970's at low levels to replace lead additives and aromatic compounds. MTBE has other special uses in chemical laboratories and in medicine. It is also used to dissolve gallstones. HEALTH EFFECTS The general public can be exposed to low concentrations of MTBE while pumping gasoline and working as attendants or mechanics where gasoline is sold. MTBE appears to be rapidly and completely absorbed from ::.e • n'M /^S pace 42 respiratory and gastrointestinal tracts in humans and animals. Following oral, inhalation. dermal. or intravenous exposure in experimental animals, much of the MTBE is rapidly eliminated as unchanged MTBE in the expired ail. Unchanged MTBE and its metabolite, tertiary butanol (TBA) are the main respiratory excretion products. MTBE and TBA have been detected in the blood, urine, fatty-tissue, and mother's milk of patients undergoing gallstone treatment using MTBE. The annual MTBE exposure concentration estimated by the EPA for maximally-exposed people in areas with oxyfuel and RFG ranged between 0.03 and 0.05 mg/m' of air. Acute Effects Complaints of possible health effects as a result of exposure to MTBE containing gasoline were first reported in 1992 by the residents of Anchorage and Fairbanks, Alaska. The most frequent symptoms reported were headache, dizziness, nausea, eye irritation, and a burning sensation in the nose and throat. Similar complaints were also reported in New Jersey, Montana, Connecticut, New York, Maine, and Wisconsin after these states began using oxyfuel and/or RFG. In response to these health complaints, several epidemiological studies • have been conducted in different parts of the country. These studies were unable to relate either oxyfuel or RFG use to increased prevalence of reported symptoms. In controlled human experiments, subjects exposed to 5 mg/m' (1.4 ppm) to 6 me/m'(1.7 ppm) MTBE in the air for one hour did not report any symptoms of heartache, eye irritation, nose irritation, or behavioral changes. No correlation was found between blood concentrations of MTBE and the reported symptoms. Based on the available information to date, there is no conclusive epidemiological or clinical evidence to link the use of oxyfuel or RFG with serious acute health effects. The reported individual symptoms and symptom patterns perceived to be associated with exposure to oxyfuel or RFG arc generally non-specific an''" similar to those experienced with common acute and chronic illnesses such as colds, flu and allergies. reported symptoms can also be expected to occur from exposure to conventional gasoline which does not contain MTBE as an additive to improve oxygen content. The acute toxicity in experimental animals of MTBE is low following inhalation, oral, or dermal exposure. Acute inhalation 4-hour LC,, (the calculated concentration that kills 50% of the test organisms) values in rats ranged from 33,370 ppm to 39,395 ppm. The oral LD,o(the calculated dose which causes death in 50% of a defined experimental animal population) in rats is 38,000 milligrams per kilogram (mg/kg). The acute dermal LD50 for rabbit is greater than 10,000 mg/kg. In dermal sensitization tests in guinea pigs, local irritation resulted after injection of 0.5 ml of 1% MTBE unritr the skin. Chronic Effects In a 24-month, inhalation study, increased mortality and decreased mean survival time occurred in male rats exposed intermittently to 3,000 ppm and 8,000 ppm MTBE. In these animals, the primary cause of death was progressive nephropathy (kidney disease). It was speculated that the mechanism of renal toxicity observed in this study may be specific for the male rat and may not be relevant to humans. In mice exposed to the same concentration of MTBE for 18 months, increased mortality and decreased mean survival time occurred in males at 8,000 ppm due to uropathy (urinary tract disorder). No information is available regarding long-term health effects in humans following inhalation exposure to MTBE at low contractions. No reproductive, teratogenic, or mutagenic effects have been observed in test animals after inhalation exposures. Carcinogenicity No studies were located regarding cancer in humans exposed to MTBE by any route or in animals exposed orally or dermally. Chronic inhalation exposure of rats to 400, 3,000, or 8,000 ppm MTBE. resulted .0.1 773 pace 43 • in increased incidence of renal tubular adenoma and carcinoma in male rats at 3,000 ppm and 8,000 ppm. Chronic inhalation exposure of mice exposed to 400, 3.000; or 8,000 ppm MTBE, resulted in an increased incidence of hepatocellular adenoma in female mice at 8,000 ppm. Based on the available studies, the EPA has tentatively classified MTBE as a Group C "possible human carcinogen" (limited evidence of carcinogenicity in animals and inadequate or lack of human data). • ENVIRONMENTAL EFFECTS Concentrations of MTBE in ground-level air at three refineries in the United States were detected at less than 0.03 mg /m3. The largest environmental releases are likely to occur as fugitive emissions from chemical manufacturing plants, gasoline terminals, service stations, and spills. The half-life of MTBE in air has been estimated to range between 20.7 hours and 265 hours. The half-life of MTBE in water has been estimated to be 28 days to 180 days in surface waters, and 112 days to 720 days in deep water or groundwater. MTBE has a low toxicity to fish. A 96-hour LC<o of 672 milligrams per liter (mg/t) in the fathead minnow and a 96-hour LC50 of greater than 10,000 mg/t in a copepod have been determined. No toxicity data are available for birds, terrestrial plants, or soil biota. STANDARDS AND GL-IDELLNES At this time, there are no federal standards for MTBE in water or air. The Threshold Limit Value (TLV), established by the American Conference of Governmental Industrial Hygienists (ACGIH) for occupational exposure to MTBE is 40 ppm (144 mg/m') during an eight to ten hour work shift. The EPA has developed a reference concentration (RfC) for MTBE of 3 mg/m' (0.8 ppm). RfC is defined as an inhaled concentration, with uncertainty spanning an order of magnitude, that can be inhaled continuously over a lifetime by people (including sensitive _;. populations) without any appreciable deleterious noncancer hazard. The lifetime health advisory for MTBE in drinking water varies from 70 ;:g/t to 200 ;:g/t in different states. SYNONYMS Methyl t-butyl ether (Chemical Abstract Registry #1334-04-4), ten-butyl methyl ether, 2-methoxy-2- methylpropane, MTBE. PREPARED BY: Ram K. Tripathi, Ph.D. Toxicologist December 18, 1995 AL3EVARLE CO, \TY SERVICE AUTHORITY P.O. Box 1009 168 SPOTNAP RD CHARLOTTESVILLE, VA 22902 • (804) 977-4511 FAX (804) 979-0698 March 7, 1997 RECEWED Mr. Wayne Cilimberg Director of Planning & Community Development Albemarle County Office Building MAR 1 ' 1997 Charlottesville, Virginia 22901 Panning Dept. Re: Key West Subdivision Dear Wayne: Yesterday we met with representatives of Virginia Department of Health, Department of Environmental Quality, Key West Water Company, and Key West property owners to discuss the possibility of connecting that subdivision to ACSA's water system. I previously notified you that the primary well serving this subdivision had become contaminated with Methyl Tertiary Butyl Ether (MTBE) . Additional wells have been drilled but they do not produce the quantity of water needed, although there is no indication of MTBE in the new wells. Putting a treatment system on the contaminated well will be costly and its long term effectiveness uncertain. Much work has to be done to determine terms under which the ACSA would take over the distribution system, how the connection to the ACSA system would be made, and funding. The first question to be answered is whether the County would incorporate Key West into ACSA' s jurisdictional area. Since ACSA traditionally has not initiated requests to expand its service areas, who should apply for the jurisdictional boundary amendment? The water company? The customers? DEQ? VDH? I would appreciate some direction from you as to how to proceed in this matter. Veryr ly yours, Y J. W. Brent Executive Director JWB:dmg cc: Board of Directors Mr. Charles Martin Paul Shoop Bob Tucker 4. kat / �kat1 ATTACHMENT B ikvit COMMONWEALTH of VIRGINIA RANDOLPH L. GORDON, M.D., M.P.H. Department of Health ROCKBRIDGE SQUARE SHOPPING CENTER COMMISSIONER Office of Water Programs 131 WALKER STREET LEXINGTON,VIRGINIA 24450-2431 Environmental Engineering Field Office PHONE: (540)463-7136 FAX: (540)463-3892 April 4, 1997 SUBJECT: Albemarle County Water - Key West Subdivision Mr. V. Wayne Cilimberg Director of Planning & Community Development County of Albemarle 410 McIntire Road Charlottesville, Virginia 22902-4596 Dear Mr. Cilimberg: During the Albemarle County Board of Supervisors meeting held on April 2, 1997 you requested that I provide more specific information concerning the Virginia Department of Health's methodology of assigning a design capacity for public water supply wells. Specifically there were questions concerning the available source capacity in wells number 3 and number 4 serving Key West Subdivision. The Commonwealth of Virginia Waterworks Regulations requires that a waterworks utilizing wells as the sole source of supply shall provide source capacity of a minimum of 0.5 gallons per minute per equivalent residential connection (12 VAC 5-590-690D). The gallons per minute rating of a specific well is the stabilized yield as determined by a yield and drawdown test of a minimum 48 hour duration (12 VAC 5-590-840B6). An equivalent residential connection (ERC) is defined as a volume of water used equal to a residential connection which is 400 gallons per day (12 VAC 5-590-10). The referenced sections of the Waterworks Regulations are attached for your information. In the specific case at Key West Subdivision, the available reliable source capacity of wells 3 and 4 is calculated to be 27,200 gallons per day as follows: Well 3 Pump Test 15 gpm Well 4 Pump Test 19 qpm Total Yield 34 gpm 34 gpm x 2 ERCs per gpm = 68 ERCs 68 ERCs x 400 gpd per ERC = 27,200 gpd The current average water usage at Key West Subdivision is 50,000 to 60,000 gallons per day. As such, wells number 3 and number 4 will supply approximately one half of the needed demand. • ,► Mr. V. Wayne Cilimberg Page 2 SUBJECT: Albemarle County Water - Key West Subdivision If you should have any questions or need additional assistance, please do not hesitate to contact this office at 540/463-7136. ery truly yours, Muirrif James W. Moore III, P.E. District Engineer JWM/mep cc Key Commercial Inc. - Attn: Mr. Jack Schwab Albemarle County Service Authority - Attn: Mr. Bill Brent Albemarle County Health Department - Attn: Dr. Susan McLeod VDH - Richmond Central WATERWORKS REGULATIONS EFFECTIVE DATE November 15, 1995 • • THIS COPY OF THE REGULATIONS IS IN WORD 6.0. THIS VERSION HAS THE NEW PHASE II, IIB, AND V REGULATIONS AND THE LEAD AND COPPER REGULATIONS (WHICH WERE BOTH EFFECTIVE 11/15/95). ALSO, THE VAC NUMBERS ARE INCLUDED. • Copies of these Regulations can be obtained from: Virginia Department of Health, Division of Water Supply Engineering, 1500 East Main Street,Room 109, Richmond, Virginia 23219 -- Telephone Number(804)786-5566 Fax Number(804)786-5567. Virginia Department of Health 12 VAC 5-590-10 Waterworks Regulations PAGE 13 'Domestic'or 'Other nondistribution system plumbing problem' means a coliform contamination problem in a waterworks with more than one service connection that is limited to the specific service connection from which the coliform positive sample was taken. 'Domestic use or usage' means normal family or household use, including drinking, laundering, bathing, cooking, heating,cleaning, and flushing toilets(see Article 2 of Chapter 1 of Tide 32.1 of the Code of Virginia). 'Double gate-double check valve assembly' means an approved assembly composed of two single independently acting check valves including tightly closing shutoff valves located at each end of the assembly and petcocks and test gauges for testing the watertightness of each check valve. "Effective Corrosion Inhibitor Residual"for the put-pose of 12 VAC 5-590-420 C 1 only,means a concentrationsufficientto form a passivating film on the interior walls of a pipe. 'Entry point' means the place where water from the source after application of any treatment is delivered to the distribution system. 'Equivalent residential connection' means a volume of water used equal to a residential connection which is 400 gallons per day unless supportive data indicates otherwise. 'Exception' means an approved deviation from a 'shall' criteria contained in Part II of this chapter. 'Exemption' means a conditional waiver of a specific PMCL or treatment technique requirement which is granted to a specific waterworks for a limited period of time. "Filtration' means a process for removing particulate matter from water by passage through porous media. 'Flocculation' means a process to enhance agglomeration or collection of smaller floc particles into larger, more easily senleable particles through gentle stirring by hydraulic or mechanical means. 'Free available chlorine' means that portion of the total residual chlorine remaining in water at the end of a specified contact period which will react chemically and biologically as hypochlorous acid or hypochlorite ion. 'Governmental entity' means the Commonwealth, a town,city,county, service authority, sanitary district,or any other governmental body established under the Code of Virginia, including departments, divisions, boards,or commissions. 'Gross alpha particle activity' means the total radioactivity due to alpha particle emission as inferred from measurements on a dry sample. 'Gross beta particle activity' means the total radioactivity due to beta particle emission as inferred from measurements on a dry sample. 'Groundwater" means all water obtained from sources not classified as surface water(or surface water sources). 'Groundwater under the direct influence of surface water' means any water beneath the surface of the ground with(i)significant occurrence of insects or other microorganisms, algae, or large-diameter pathogens such as Giardia lamblia, or(ii)significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity,or pH which closely correlate to climatological or surface water conditions. Direct influence of surface water will be determined by the commissioner in accordance with 12 VAC 5-590-430. 'Halogen' means one of the chemical elements chlorine, bromine, fluorine,astatine,or iodine. 'Health hazard' means any condition,device, or practice in a waterworks or its operation that creates,or may create, a danger to the health and well-being of the water consumer. 'Health regulations' means regulations which include all primary maximum contaminant levels, treatment technique requirements, and all operational regulations, the violation of which would jeopardize the public health. 'Hypochlorite' means a solution of water and some form of chlorine,usually sodium hypochlorite. 'Initial compliance period' means for all regulated contaminants,the initial compliance period is the first full three year compliance period beginning at least 18 months after promulgation with the exception of waterworks with 150 or more service connections for contaminants listed at Table 2.3, VOC 19-21;,SOC 19-33;and antimony,beryllium,cyanide(as free cyanide),nickel,and thallium which shall begin January 1993. "Interchangeable connection' means an arrangement or device that will allow alternate but not simultaneous use of two sources of water. -590-660 VAC 5 Virginia Department of Health 12 12 VA 5 Waterworks Regulations 5 B. The waterworks shall be readily accessible in all seasons. C. Consideration should be given to the convenience of transportation facilities to the plant site and also to the availability of electric power from more than one source of outside power. 12 VAC 5-590-670. Site size. A. The area reserved around a well or spring site shall conform with 12 VAC 5-590-820, 12 VAC 5.590-830,and 12 VAC 5- 590-840. B. The treatment plant site shall be of ample size to accommodate expansion, and ample space shall be provided at the treatment site for adequate disposal of treatment plant wastes. C. The disposal of water treatment plant wastes shall conform to the State Water Control Law, Chapter 3.1 of Title 62.1 of the Code of Virginia. 12 VAC 5-590-680. Treatment process selection. The following shall be considered when selecting processes to achieve treatment goals: A. The quality and variability of the source water. B. Possible future changes in the quality of the source. C. Water quality goals, including the growing desire of the public for bener water. D. When removal of contaminants for which BAT has been specified is necessary,processes classified as BAT shall be employed. E. When treatment technique requirements have been established in lieu of MCLs, processes specified by such requirements shall be employed. F. POE or POU devices shall not be utilized for long-term compliance with PMCLs. Such devices may be considered for short term, interim use,as a condition of a variance or exemption issued by the commissioner. 12 VAC 5-590-690. Capacity of waterworks. The design capacity of the waterworks shall exceed the maximum daily water demand of the system. Waterworks shall normally be designed on the following basis of water consumption. If deviations are made, they shall be based on sound engineering knowledge substantiated in the designer's report and approved by the commissioner. A. Daily water consumption rates(annual daily water demand): Dwellings, per person 100 gpd gpd High schools with showers, per person gpd 7 gpd Elementary schools without showers, per person 10 Boarding schools, per person 130 gpd Motels at 65 gallons per person, minimum per room 300 gpd gpd Trailer courts at three persons per trailer, per trailer gpd Restaurants, per seat 50 0 gpd Interstate or through highway restaurants,per seat 1 €Pd gpd Interstate rest areas, per person 5 10 ep epd Service stations, per vehicle served 10 gpd Factories,per person, per eight-hour shift Shopping centers. per 1,000 sq.ft. of ultimate floor space 200-300 gpd Hospitals, per bed 300 gpd00 gpd Nursing homes, per bed 200 gpd Home for the aged,per bed 100 gpd Doctors office in medical center 5500 gpd Laundromats.9 to 12N machines,per machine 10 gpdCommunity colleges per student and faculty member 10 gpd Swimming pools. per swimmer • Virginia Department of Health 12 VAC 5-590-690 Waterworks Regulations PAGE 96 Theaters,drive-in type, per car 5 gpd Theaters, auditorium type,per scat 5 gpd Picnic areas,per person 5 gpd Camps, resort,day and night with limited plumbing, per camp site 50 gpd Picnic areas,per person 5 gpd Luxury Camps with flush toilets, per camp site 100 gpd B. Minimum acceptable effective finished water storage for domestic purposes shall not be less than 200 gallons per equivalent residential connection at minimum pressure. C. All waterworks shall provide at least a minimum working(under flow)pressure of 20 psi at the service connection based on the greater of maximum hour or maximum day plus applicable fire flows. Applicable fire flows shall be selected by coordination between the water supply owner,design consultant, local officials and local fire marshall. When the number of residential units is less than 1,000, the formula Q= 1 1.4* N °Si4 ; is acceptable for estimating maximum hour domestic demand flow,where Q=total gallons per minute and N=total number of residential units. The commissioner can require a higher design pressure if indicated by site conditions. D. A waterworks utilizing wells as the sole source of supply shall provide source capacity of a minimum of 0.5 gallons per minute per equivalent residential connection. E. Waterworks serving 50 or more residential connections with wells as the source of supply shall provide at least two water sources which do not hydraulically interfere with another source of public water supply. Consideration shall be given to requiring each source to be of a minimum yield so its reliability is realistic. The secondary well should be rated at 20% of the waterworks capacity as a minimum. F. Waterworks serving less than 50 residential connections with wells as the source of supply shall provide or have access to an auxiliary pump stored or stocked locally or they shall provide 48 hours of total effective storage volume based on water usage. 12 VAC 5-590-700. Metering total water production. A. Waterworks providing chlorination only shall meter the water prior to treatment. B. Waterworks providing iron or manganese removal,or both, shall meter the water prior to treatment. C. Waterworks providing softening by ion exchange shall meter all water treated and total water delivered to the distribution system. D. Waterworks providing turbidity removal or softening by precipitation, or both, shall meter the water prior to and subsequent to treatment. E. All waterworks shall provide metering of total water production. 12 VAC 5-590-710. Site layout. A. Functional aspects of site layout shall be considered. B. Site grading shall be provided. C. Adequate site drainage shall be provided. D. Walks shall be provided. E. Access roads shall be provided. F. Driveways shall be provided. 12 VAC 5-590-720. Building layout. • A. Adequate ventilation shall be provided. B. Adequate lighting shall be provided. Virginia Department of Health 12 VAC 5-590-840 103 Waterworks Regulations B 2 c. Heavy weight casing pipe may be required under certain geologic and hydrostatic conditions;and B 2 d. Where corrosive conditions exist, materials such as coated casings, stainless steel,bronze, or plastic may be used as casings or linings subject to approval by the commissioner. B 3. Packers or other well construction materials shall be of a material that will not impart taste,odors, toxic substances, or bacterial contamination to the water in the well. No lead is to be used in packers, flux, piping,etc. B 4. Screens,where required, shall: B 4 a. Be constructed of material which will not be damaged by chemical action of groundwater or future cleaning operations; B 4 b. Have size of openings to be based on sieve analysis and should be adequate to pass flows at a velocity of 0.1 foot per second or less: and B 4 C. Be installed so that exposure above the pumping level will not occur. B 5. A water well completion report shall: B 5 a. Be submitted to the commissioner, the State Water Control Board and the owner: and B 5 b. Provide all data requested on the most recent well completion form. B 6. The yield and drawdown test data over a 48-hour minimum period shall be provided:however, in those areas where geologic conditions warrant, the required test period may be varied by the commissioner. B 7. Chemical conditioning shall be included in specifications as to method, equipment,chemicals, testing for residual chemicals,disposal of waste, and inhibitors used. B 8. Grouting requirements. B 8 a. Neat cement grout is normally required and shall consist of cement(API Spec. 10,Class G cement or Class B similar to ASTM C150 TYPE II)and water with not more than six gallons of water per 94-pound sack of cement, and shall be in place within 48 hours of well construction. A maximum of 6.0%.by weight, bentonite and 2.0%,by weight,calcium chloride,may be added. NOTE: When exceptional conditions require the use of a less fluid grout to bridge voids,a mixture of cement(ASTM C150 TYPE II). sand and water in the proportion of not more than two parts by weight of sand to one part of cement with not more than six gallons of clean water per 94 pound sack of cement may be used if approved by the commissioner; B 8 b. Application. • B 8 b (1). Grout shall be installed by means of continuous pressure grouting from the bottom of the annular opening upward in one continuous operation until the annular opening is filled. B 8 b (2). Sufficient annular opening shall be provided to permit a minimum of 1 1/2 inches of grout around the protective casing. including couplings, if used. B 8 b (3). Prior to grouting,bentonite, Aquagel,or similar approved materials may be added to the annular opening, in the manner indicated for grouting;and B 8 c. Protective casing shall be provided with sufficient centralizers attached to the casing to permit unobstructed flow and uniform thickness of the grout. B 9. Plumbness and alignment: B 9 a. Every well shall be tested for plumbness and alignment; B 9 b. The test method shall be clearly stated in specifications:and B 9 C. Excessive kinks and bends shall not be acceptable. • JUNTY OF ALBEMARLB IA►TTACHMENT Al EXECUTIVE SUMMARY C3-28-97A08 : 1 5 RCVD AGENDA TITLE: AGENDA DATE: ITEM NUMBER: Key Commercial, Inc. - Request to amend the Albemarle April 2, 1997 County Service Authority Jurisdictional Area. ACTION: X INFORMATION: SUBJECT/PROPOSAL/REQUEST: Consider holding a public hearing to amend the ACSA Jurisdictional Area to provide Water Only to Key West CONSENT AGENDA: Subdivision located on Tax Map 62, Sections 62B(1), ACTION: INFORMATION: 62B(2), and 62B(3) and Cedar Hills Subdivision located on Tax Map 62, Section 62C. ATTACHMENTS: Yes STAFF CONTACT(S): Messrs. Tucker, Cilimberg REVIEWED BY: BACKGROUND: The applicant, Key Commercial,Inc. requests jurisdictional area designation for water only for service to Key West Subdivision located on Tax Map 62, Sections 62B(1),62B(2) and 62B(3) and Cedar Hill Subdivision located on Tax Map 62, Section 62C (See Attachment A). These two subdivisions are located off Route 20(Stony Point Road) just north of the Neighborhood Three Development Area and consist of a total of 228 lots(See Attachment B). The applicant has stated that the request for the water only designation is due to the primary well serving the subdivisions being contaminated with a gasoline additive called Methyl Tertiary Butyl Ether(MTBE). Also,the applicant added that the Department of Environmental Quality(DEQ) has not been able to determine the source of the MTBE and that the Virginia Department of Health (VDH)-Office of Water Programs recommends that the Albemarle County Service Authority (ACSA) furnish water to these subdivisions as a solution (See VDH report- Attachment C). According to a letter dated March 7, 1997 from Bill Brent,ACSA Executive Director,the applicant has attempted to drill additional wells but they did not produce the water quantity needed to serve the neighborhoods. Also, Mr. Brent added that putting a treatment system on the contaminated well will be costly project and its long term effectiveness is uncertain (Attachment D). DISCUSSION: The subject property for this request is not within a Development Area. The Comprehensive Plan provides the following concerning water service in the Rural Area: General Principle: Utilization of central water and/or sewer systems or the extension of public water or sewer into the Rural Area is strongly discouraged except in cases where public health and safety are at issue. Recommendation: Only allow changes in jurisdictional areas outside of designated Development Area boundaries in cases where the property is:(1) adjacent to existing lines;and(2)public health or safety is endangered. The subject property is not located adjacent to a water line. The nearest line is a 12 inch water line (Pantops water line) located approximately 6,000 feet south of the subdivisions that runs along Route 1421 (Elk Drive),just south of Darden Towe Park. Verification of endangerment to public health and safety is provided in the attachments. RECOMMENDATION: The applicant has actively sought alternative solutions to provide a replacement system by attempting to find a new well(s)to serve the neighborhoods. The Virginia Department of Health-Office of Water Programs has confirmed ground water contamination and has indicated that the best alternative to serve the subdivisions is a connection to the Pantops water line. Staff believes that the effect on the intent of the Comprehensive Plan of an amendment is minimal in that the jurisdictional area for public water will only be designated for those parcels in the Key West and Cedar Hill subdivisions currently served by the Key West Water Company. For these reasons, staff recommends proceeding to public hearing to consider amending the jurisdictional area map to allow for water only designation for the Key West and Cedar Hills subdivisions located on Tax Map 62, Sections 62B(1), 62B(2), 62B(3) and 62C. cc: Key Commercial, Inc. Art Petrini Bill Brent David Hirschman James W. Moore III 97.071