Loading...
O-78-485 - 9/28/1978ORDINANCE NO. rJ� AN ORDINANCE ADOPTING THE URBAN SERVICES ELEMENT OF THE ROUND ROCK GENERAL PLAN. WHEREAS for the past decade the City of Round Rock has experi- enced unprecedented and rapid growth with respect to population, housing, land development and utilization of city services, and WHEREAS the water and sewerage systems have been and are being improved to meet the needs of the City's growing population, and WHEREAS the Council has seen a need for a comprehensive gen- eral plan to guide the City and to provide for the orderly adequate and economic development of its future residential, commercial, industrial and public land uses and community facilities, including water and sewerage systems, NOW THEREFORE, BE IT ORDAINED BY THE COUNCIL OF THE CITY OF ROUND ROCK, TEXAS, THAT: I. The City Council hereby adopts the Urban Services Element of the Round Rock General Plan, a copy of which is attached hereto as Exhibit "A ". II. All ordinances, parts of ordinances, or resolutions in con- flict herewith are expressly repealed. (Mark through the following alternative that is not applicable) Alternative 1. By motion duly made, seconded and passed with an affirmative vote of all the Council members present, the requirement for reading this ordinance on two separate days was dispensed with. READ, PASSED, and ADOPTED on first reading this L day of diflt/ , 1978. Alternative 2. READ and APPROVED on this the day of , 1978. , • ATTEST: R --a J , 1978. econsLraading this the g okc i. Ji be-4 Robert G. Griffi W Mayor City of Round Rock, Tekas DEPARTMENT OF PLANNING AND COMMUNITY DEVELOPMENT ROUND ROCK GENERAL PLAN URBAN SERVICES ELEMENT FIVE YEAR NEEDS WATER AND SEWER ROUND ROCK, TEXAS SEPTEMBER 12, 1978 DATE: September 12, 1978 TO: Bill Burgan, Chairman, Round Rock Planning Commission FROM: Bob Bennett, Director of City Planning SUBJECT: Urban Services Element of General Plan INFO: James Samuelson, City Manager Transmitted herewith is the Urban Services Element of the General Plan. This element concerns water and sewer only and covers a five year time span. In the near future the time frame of five years will be ex- panded to ten years. The Planning Department is pleased to deliver this element of the General Plan to the Commission. BB /jm MEMORANDUM Respectfully submitted, Bob Bennett, AIP Director of City Planning City of Round Rock. POPULATION The following bar graph contains a combination of population estimates and population projections for the City of Round Rock. Past populations were derived through various methods and from various sources. The pro- jected populations were produced essentially through the use of the linear regression technique. In addition, these population projections were cross- checked and refined according to several indices, which include economic base study, building permit records, plat activity and lot absorption rate. 40,000 35,000 30,000 25,000 20,000 15,000 10,000 5,000 ESTIMATED POPULATION 1968 -1986 CITY OF ROUND ROCK (CURRENT TREND) '68 '70 '72 '74 '76 '78 '80 '82 84 '86 ROUND ROCK 1983: WATER AND SEWER Assuming adequate water supply and bonding capacity and the present growth trend, the following generalizations can be made about Round Rock 1983: The population may be 24,000. Water demand could reach a peak of 11 million gallons per day. An additional 3 million gallons per day will be required to meet the Brushy Bend contract. Sewer demand would be 2.4 million gallons per day. An expenditure over the five year period to 1983 of $7.5 million would have been made. Following the Urban Services approach as outlined here, the quality of life as it relates to water and sewer would have increased. REPORT ORGANIZATION Water and sewer needs and costs have been broken down to specific years in specific service levels over the next five years. The next page depicts the water service levels for Round Rock. Following pages address individual water service level needs and costs. Sewer needs and costs immediately follow the water section. _......... _ ,j u 1 r` ��' �� �r��ti ......•.- e y, .. 7 Jtl � I .. YEAR: 1978 POPULATION: 2396 Limitation ELEVATED STORAGE (4076 people) GROUND STORAGE (5092) COMBINED STORAGES (4510) WATER SERVICE LEVEL 1A POPULATION 1979 1980 1981 1982 1983 ITN 3863 4597 5330 6064 WATER SERVICE THRESHOLDS Cost Expenditure Year $247,500 1981 Solution .5 MG STDPE (8550 people) .5 MG GST $165,000 1982 (7690) 1 .5 million gallon standpipe. 2 Population that can be currently served. 3 Population served after improvement. 4 .5 million gallon ground storage tank. 5 Possible to serve this population through good system management. YEAR: POPULATION: Limitation BOOSTER PUMPS (4000 people) GROUND STORAGE (3850) ELEVATED STORAGE (7150) COMBINED STORAGE (5319) WATER SERVICE LEVEL 1B POPULATION 1978 1979 1980 1981 1982 1983 3998 4866 5735 6604 7473 8342 WATER SERVICE THRESHOLDS Solution (2) 1000 GPM PUMPS (10,400) .75 MG GST (9615) .5 MG STDPE (11,900) Cost Expenditure Year $75,000 $165,000 $247,500 1979 1980 1982 WATER SERVICE LEVEL 2 POPULATION YEAR: 1978 1979 1980 1981 1982 1983 POPULATION: 3784 46 5452 6286 7120 7955 WATER SERVICE THRESHOLDS Limitation Solution Cost Expenditure Year. BOOSTER PUMPS (2) 1000 GPM PUMPS $75,000 1979 (3200 people) (9,600) ELEVATED STORAGE 5 MG STDPE $247,500 1980 (4762) (9,500) GROUND STORAGE .5 MG GST $165,000 1981 (5769) (9,600) COMBINED STORAGE (5319) WATER SERVICE LEVEL TEMPORARY POPULATION YEAR: 1978 1979 1980 1981 1982 1983 POPULATION: 728 887 1048 1207 1367 1527 WATER SERVICE THRESHOLDS Limitation Solution Cost Expenditure Year BOOSTER PUMPS 500 GPM PUMP $37,500 1979 (660 people) (2400) ELEVATED STORAGE .5 MG STDPE $247,500 1979 (0) (4380) WATER NEEDS THROUGH 1983 DISTRIBUTION Water Service Level Cost YEARS la lb 2 TEMP TOTALS 1979 0 $75,000 $75,000 $285,000 $435,000 1980 0 $165,000 $247,500 0 $412,500 1981 $247,500 0 $165,000 0 $412,500 1982 $165,000 $247,500 0 0 $412,500 1983 0 0 0 0 0 $412,500 $487,500 $487,500 $285,000 $1,672,500 WATER SUPPLY Surface: Northfork Reservoir: $4.3 million for a 16" waterline and 4 mgd to $7.5 million for a 36" waterline and 18 mgd. Waterline route is from Northfork to IH 35 and Westinghouse Road. Cost includes 4 mgd water treatment plant (first phase). Lake Travis: $7 to $10 million depending on size of transmission line from Lake Travis to Round Rock. Includes 4 mgd water treat- ment plant (first phase). Ground: Indeterminate at this time as to adequacy. Costs to develop a 2 to 3 mgd well, pump and transmission line could run between $125,000 and $225,000, assuming transmission lines no longer than 1 mile. SEWER NEEDS THROUGH 1983 COLLECTION AND TREATMENT Sewer service for the city is depicted by watershed. Improvements needed are shown in yellow. A date has been assigned to each yellow box indicating when the improvement will be required. Again, the current population growth trend has been used for sewer system evaluation. 1 /5~ a o..ee r000 G.P.rN... xe.o %Pap * / 0,79.' /900 &RAI Z6 MGa ?eto cox /•8 M'.GGt; r Pop . •3764 . ,B' Cr a•,3 1900 (.P. A//. '. 2, 94 M•4.0. Pop. • qa/g P 4 /99g /750 G PiV! � .- /979 /6' a.4 3000 Gr?M• �F•4 G.O. /2346 r ro ,,}} 5'4 4 / 2. d i 145or7 Gf�N� i 6.B NIGQ fbp. /4 520 • rf �.. . rciVe pi _......_ d✓ /e a Q. 1/50 GPNI /. M.6.P 1 - •4732 /5' Cz /.0Z 3000 G. F.'1.4. 4.3 M.G.0. Gp. _ /2,34.6 C,500 61F 9.4 /1 �P = 26,'750 � /5fX' G. P. M /! «{ /sec. % Po,/=, - G170 SEWER SYSTEM /O°e 0.2'vZ /940 6.17A1 2 f5P' 63 NEW 1 ?ACID Z� PL A-mT to ob0 PO?? • .181 r! aptdatien Dema, Zia va lent /?80. /Q,3nlnP,%1 ?.34• /L r• D. AV. ' Size ofPpat' Areerreafe ofQi zif„ °aeon F/ed,;., Gallons $r Mf m✓t� In M1i /en GA/An; Ar Peru /a4.e; /nand Evira /en{-// #e =.2%frp. -,, r mn ° SEWER SERVICE COST YEARS BRUSHY CREEK LAKE CREEK TOTALS 1979 0 $58,750 $58,750 1980 $28,125 *$1,359,250 $1,387,375 1981 $41,250 0 $41,250 1982 0 $20,000 $20,000 1983 0 0 0 $1,507,375 *includes sewer plant of 1 mgd capacity capable of serving an additional 10,000 people. COMBINED WATER AND SEWER SERVICE COST 1983 YEARS COMBINED COST SEWER COST WATER COST 1979 $493,750 = $58,750 + $435,000 1980 $1,799,875 = $1,387,375 + $412,500 1981 $453,750 = $41,250 + $412,500 1982 $432,500 = $20,000 + 0 1983 0 = 0 + 0 $3,179,875 NORTHFORK $4,300,000 (16" line) to $7,500,000 (36" line) TOTAL $7,479,875 to $10,679,875 for all water and sewer needs through 1983 at present rate of growth. Design Criteria WATER SYSTEM A. Water Consumption Demand AVERAGE DAILY DEMAND - 150 gallons per capita per day (GPCPD) PEAK DAILY DEMAND - 3 times Average Daily Demand (450 GPCPD) B. Sizing Water System Facilities The various components of the proposed water system improve- ments should be designed on the following basis: (1) SUPPLY - Peak Daily Demand (450 GPCPD) (2) HIGH SERVICE PUMPS - Peak Daily Demand (450 GPCPD) (3) GROUND STORAGE - One day of storage @ 130 gallons . per capita per day. (4) ELEVATED STORAGE - Summation of the following: a. Equalization - 20% of one day's storage @ 150 gallons per capita per day. b. Fire - 10 hours storage @ 130 gallons per capita per day. c. Emergency - 25% of the summation of Equalization and Fire Storage. d. Total: 105 gallons per capita per day. WASTEWATER SYSTEM DESIGN CRITERIA A. 10 persops per acre @ 100 gallons per person per day. B. Peak factor of transmission lines 2.5. C. Wet weather infiltration allowance 1,000 gal. per acre per day. D. Design flow equals (10 X 100 X 2.5) + 1,000 = .3,500 gallons per acre per day or 2.43 gallons per minute per acre peak.