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Home My WebLink About790938.tiff RESOLUTION RE: APPROVAL OF PRELIMINARY PLAN - ALLISON FARMS, SEARS AND COMPANY, REALTORS. WHEREAS, the Board of County Commissioners of Weld County, Colorado, pursuant to Colorado statute and the Weld County Home Rule Charter, is vested with the authority of administering the affairs of Weld County, Colorado, and WHEREAS, on the 7th day of November, 1979 , the Preliminary Plan - Allison Farms was submitted to the Board of County Com- missioners of Weld County, Colorado for approval in accordance with the Subdivision Regulations of Weld County, Colorado, and WHEREAS, the Board of County Commissioners heard all of the testimony and statements of those present, and WHEREAS, the Board of County Commissioners had evidence presented in support of the approval of said Preliminary Plan for the following described real estate, to-wit: A tract of land located in the North Half of the Northeast Quarter and the East Half of the Northwest Quarter of Section 16, Township 5 North, Range 66 West of the 6th Principal Meridian, Weld County, Colorado; being more particularly de- scribed as follows: Commencing at the Northeast Corner of said Northeast Quarter of Section 16 and con- sidering the East line of said Northeast Quarter to bear South 00°26 ' 33" East with all bearings herein being relative thereto; Thence South 00°26 ' 33" East, 330. 04 feet along said East line of the Northeast Quarter; Thence North 89°36 ' 40" West, 40. 00 feet to a point on the West right-of-way line of 59th Avenue, said point being the True Point of Beginning; Thence along said West right-of-way line South 00°26 ' 59" East, 983 . 75 feet, the Northeast Corner of West Ridge Fourth filing as recorded in the records of Weld County under reception #1584885; Thence North 89°31 ' 28" West, 2638 . 60 feet along the North line of West Ridge Fourth filing which is also the South line of said North Half of the Northeast Quarter of Sec- tion 16 , to the Southwest corner of said North Half of the Northeast Quarter of Section 16 ; Thence South 00°20 ' 31" East, 1308 . 70 feet along the East line of said East Half of the Northwest Quarter of Section 16 to the South- east corner of said East Half of the North- west Quarter of Section 16 ; Thence South 89°41 ' 10" West, 1334 . 60 feet along the South line of said East Half of 790938 the Northwest Quarter of Section 16 to the Southwest corner of said East Half of the Northwest Quarter of Section 16 ; Thence North 00°23 ' 48" West, 2604 .88 feet along the West line of said East Half of the Northwest Quarter of Section 16 to a point on the South right-of-way line of West 20th Street; Thence South 89°36 ' 40" East, 3353 . 31 feet along said South right-of-way line of West 20th Street; Thence South 00°26 ' 33" East, 300. 03 feet; Thence South 89°36 ' 40" East, 620. 07 feet to the True Point of Beginning. Said tract contains 152. 969 acres more or less. WHEREAS, the Board of County Commissioners has studied the request as submitted, and having been fully informed, is satis- fied that the submitted Preliminary Plan conforms in all respects with the requirements of Section 5 of the Weld County Subdivision Regulations, and that approval of said Preliminary Plan would be in the best interest of Weld County. NOW, THEREFORE, BE IT RESOLVED by the Board of County Com- missioners of Weld County, Colorado that the Preliminary Plan of Allison Farms, Sears and Company, Realtors , located in Part of Section 16, Township 5 North, Range 66 West of the 6th P .M. , Weld County, Colorado be, and hereby is , approved subject to the following: 1. Septic systems may be allowed in the first filing of Allison Farm Subdivi- sion. At such time the City of Greeley Sewer Service is available, the issuance of septic system permits will cease. 2 . The final plat shall show the following: a) A dedication of 20 additional feet of right-of-way along 20th Street and 59th Avenue. b) Realignment of 20th Street Road with Fairway Lane located on the East side of 59th Avenue so that the centerlines meet on the same point on 59th Avenue. c) How the irrigation ditch will be routed through the property to insure there is no interruption of water services for properties north of the proposed subdi- vision. d) The designs for mains to laterals be shown on the final plat and the con- struction be included in the improve- ments agreement. BE IT FURTHER RESOLVED by the Board that the reasons for approval contained in the Planning Commission recommendations dated September 18 , 1979 be, and hereby are, adopted as the findings of fact of the Board of County Commissioners in this matter. The above and foregoing Resolution was, on motion duly made and seconded, adopted by the following vote on the 7th day of November, A.D. , 1979. BOARD OF COUNTY COMMISSIONERS WELD COUNTY, COLORADO ( (Aye) Norman Carlson, Chairman Lyd u66th/ itza�s� (Aye) nbar (ABSENT) C. W. Kirby hk..nAw.4- oe At. (Aye) L and L. Roe �2 Yi inm i'd,4: (Aye) 2 J K. St ark t:r� ATTEST: 7�� t F.;:C,`;'c�'"�'C,?'�� Weld County Clerk and Recorder an_ Clerk to the Boa By e•uty Coun y AP ED AS TO FORM: _ ✓��nerkta-i V C County Attorney DATE PRESENTED: NOVEMBER 14 , 1979 A public hearing was conducted on NnvenFer 7 . , 1979 at 2 : 00 P.M. , with the following present : • NORMAN CARLSON CHAIRMAN LYDIA DUNBAR COMMISSIONER BILL KIRBY COMMISSIONER, EXCUSED LEONARD ROE COMMISSIONER JUNE STEINMARK - COMMISSIONER Also present: ACTING CLERK TO THE BOARD, JEANNFTTE ORDWAY & KEITHA WHITE ASSISTANT COUNTY ATTORNEY, R. RUSSFml ANSCN PLANNING DEPARTMENT REPRESENTATIVE, TOM HONN & CHUCK CUNLIFFE HEALTH DEPARTMENT, JOHN HALL The following business was transacted: I hereby certify that pursuant to notices dated October 1, 1979, duly published October 4th and October 25th, 1979 in the Platteville.Herald, a public hearing was held on the request of Sears and Company, Realtors for a Change of Zone flow A (Agricultural District) to E (Estate District) , ' a Change of Zone fran A (Agricultural District) to H (High Density District) , and to consider the preliminary plat of Allison Farm subdivision. The Planning Staff read.the favorable recomrmenaations and development standards for the Change of Zones into the record. The Planning Ccmnission's favorable reoonmendation and conditions regarding the Preliminary Plat for Allison Farm were also read into the record. Mr. Doug Sears, representing the applicant, presented the cases. John Hall commented on the concerns of the Health Department regarding the septic system. The applicant and the Bnard discussed said concerns. Robert Bechtholdt, an adjacent landowner, presented a petition signed by neighbors bordering the Allison Farm Subdivision. Said petition protested the proposed RV parking area in the belief that such a parking area is not in keeping with the standards already set by the surrounding area. Several adjacent landowners were present and voiced their objections to these requests. (Tape change 79-142) Doug Sears responded and answered the objections raised. After deliberation, Commissioner Steinmark made a motion to accept the recamme elation of the . Planning Commission and approved the Change of Zone fran A to E, based on - the fact that said change would be compatible with the surrounding land uses, that it appears that adequate water and sewer service can be made available, further that the development standards are accepted. Commissioner Dunbar seconded the motion and it carried unanimously. Commissioner Dunbar made a motion to grant the Change of Zone from A to H including the development standards. Commissioner Steinmark seconded the motion and it carried unanimously. Commissioner Roe made a motion to approve the Preliminary Plat for Allison Farm, amended condition #1 to read as follows: 1. Septic systems may be allowed in the first filing of Allison Farm Subdivision. At such time as the City of Greeley sewer service .is available the issuance of septic system permits will cease . and under #2 include, d) The designs-" for mains and laterals be shown on the final plat and construction costs be included in the improvements agreement. Cammissioner Steinmark seconded the motion and it married unanimously. CHAIRMAN BOARD OF COUNTY COMMISSIONERS /1 WELD COUNTY, COLORADO r�.. 4`_..�,n '��Y E✓; tai ✓ • ATTEST: WELD COUNTY CLERK AND RECORDER AND 'CLERK TO THE BO ty County Cle DO T k 79-88 and 79-89 TAPE # 79-141 and 79-142 LHR 1096 (COZ fromA to E) LHR 1095 (ODZ from A to H) NOTICE Pursuant to the zoning laws of the State of Colorado and the Weld County Zoning Resolution, a public hearing will be held in the Chambers of the Board of County Comnissioners of Weld County, Colorado, Weld County Centennial Center, 915 10th Street, Greeley, Colorado, at the time specified. All persons in any manner interested in the following proposed Change of Zone are requested to attend and may be heard. BE IT ALSO KNOWN that the text and maps so certified by the County Planning Commission may be examined in the Office of the Clerk to the Board of the County Commissioners , located in the Weld County Centennial Center, 915 10th Street, Third Floor, Greeley, Colorado. APPLICANT DOCKET NO. 79-89 Sears and Company, Realtors 1221 8th Avenue Greeley, Colorado 80631 DATE: November 7, 1979 TIME: 2:00 P. M. REQUEST: Change of Zone, from A ( Agricultural District) to H ( High Density District) and consider Preliminary Plat for Allison Farm LEGAL DESCRIPTION: A tract of land located in the East half of the Northwest quarter of Section 16, Township 5 North, Range 66 West of the 6th Principal Meridian, Weld County, Colorado, being more particularly described as follows: Commencing at the Southwest corner of the East half of the Northwest quarter Section 16, considering the West line of said East half of the Northwest quarter to bear North 00°23'48" West with all bearings herein being relative thereto; Thence North 00°23'48" West, 470.19 feet to the true point of beginning; Thence continuing North 00°23'48" West, 2134.68 feet to a point on the South right-of-way line of 20th Street; Thence South 89°36'40" East, 1147.00 feet along the South right-of-way line of 20th Street; Thence South 00°23'20" West, 280.00 feet; Thence North 89°36'40" West, 841.16 feet; Thence South 37°02'06" East, 349.23 feet; Thence along the arc of a curve to the right having a radius of 230.00 feet, a delta of 37°25'26" and a long chord which bears North 71°40'37" East, 147.57 feet; Thence South 89°36'40" East, 213.00 feet; Thence along the arc of a curve to the left having a radius of 230.00 feet, a delta of 11°45'00" and a long chord which bears South 84°30'50" West, 47.09 feet; Thence North 78°38'20" East, 70.00 feet; Thence South 11°21'40" East, 93.00 feet; Thence along the arc of a curve to the right having a radius of 235.00 feet, a delta of 09°00'00" and a long chord which bears South 06°51'40" East, 36.88 feet; Thence South 02°21'40" East, 126.00 feet; Thence along the arc of a curve to the right having a radius of 280.00 feet, a delta of 15°40'06" and a long chord which bears South 05°28'23" West, 76.33 feet; Thence North 76°31'20' West, 165.00 feet; Thence South 82°43'30" West, 94.76 feet; Thence South 21°35'11" West, 247.35 feet; Thence South 24°33'15" West, 344.12 feet; Thence South 09°25'06" West, 213.88 feet; Thence South 04°49'31" East, 154.55 feet; Thence North 83°03'48" West, 112.11 feet; Thence South 89°36'12" West, 215.00 feet; Thence South O0°23'48" East, 288.00 feet; Thence along the arc of a curve to the right having a radius of 200.00 feet, a delta of 34°33'00" and a long chord which bears South 16°51'12" West, 118.62 feet; Thence South 34°00'12" West, 87.00 feet; Thence along the arc of a curve to the left having a radius of 310.00 feet, a delta of 14°41'39" and a long chord which bears North 63°14'38" West, 79.29 feet to the true point of beginning. Said tract of land contains 29.26 acres more or less. DATED: October 1, 1979 THE BOARD OF COUNTY COMMISSIONERS WELD COUNTY, COLORADO BY: NARY ANN FEUERSTEIN COUNTY CLERK AND RECORDER AND CLERK TO THE BOARD BY: Jeannette Ordway, Deputy PUBLISHED: OCTOBER 4th, and OCTOBER 25th, 1979 in the Platteville Herald Galt €ff s , OFFICE OF BOARD OF COUNTY COMMISSIONERS PHONE (3031356-4000 EXT. 200 P.O. BOX 758 WI I P C. GREELEY, COLORADO 80631 COLORADO May 14 , 1979 Doug Sears Sears $ Company Realtors 1221 8th Avenue Greeley, Colorado 80631 Dear Mr. Sears : Per the discussion at the Commissioners ' work session of May 7 , 1979 , this letter will confirm the Board ' s under- standing of your request concerning the enlargement of a retention pond area at the south-west corner of the proposed Allison Farm Subdivision and the re-routing of 24th Street through the Subdivision. This subdivision is located in the NZ of the NE1 and the Ell of the NWa of Section 16 , Township 5 North, Range 66 West. The Board of County Commissioners does not believe that the financial burden of the development of the retention pond or the re-routing of 24th Street should be borne by the tax- payers of Weld County. However, the Board does recognize that previous governmental decisions made by the City of Greeley and Weld County have impacted the developers of the proposed Allison Farm Subdivision. In the event that the Final Plat for Allison Farm Subdivision is approved, the Board of Weld County Commissioners agrees to the following: 1 . Subdivision park fees shall be determined according to the formula contained in Section 8-15 of the Weld County Subdivision Regulations . Any appropriate land dedicated to the County shall be deducted from the fee assessed. 2 . Weld County shall accept dedication of the approximate 21/2 acres in the southwest corner of the proposed Subdivision for the retention pond area. j :> Doug Sears - May 14 , '79 Page 2 3. Weld County agrees to redly e the amount of the subdivision park fees by an amount equal to the cost of designing and constructing the retention pond enlargement in the south-west corner and the costs of designing and construc- ting the re-routing of 24th Street which are related to proper drainage design and construc- tion. A cost estimate shall be prepared by the developer and submitted to the Board prior to Final Plat approval . 4. It is agreed the developer shall be respon- sible for all actual and necessary work to design and construct the pond and re-route 24th Street ; however, design plans shall be reviewed and approved by the County Engineer before any construction shall commence. 5 . In no event will Weld County be financially responsible for any costs relating to this request which may exceed the subdivision park fee requirement. 6 . If the developer does not obtain from the Board of County Commissioners final approval of the Final Plat for Allison Farm Subdivision (in specific that filing which shall include the retention pond and the re-routed 24th Street) on or before May 1 , 1981 , the terms of this agreement shall expire. We hope that this explanation sufficiently clarifies the Board' s position concerning your request of May 7 , 1979 . Sincerely, Board of County Commissioners etnizejtv Dunbar Chairman Pro-Tem cc: Planning Department Engineering Department Planning Commission County Attorney JKS/rjk --y. BEFORE dE WELD COUNTY, COLORADO PLANNI COMMISSION RESOLUTION OF RECOMMENDATION TO THE BOARD OF COUNTY COMMISSIONERS Date September 18, 1979 Case No. S# 163 :79:8 APPLICATION OF Sears and Company, Realtors ADDRESS 1221 8th Avenue, Greeley, Colorado 80631 Moved by Jim Gilbert that the following resolution be introduced for passage by the Weld County Planning Commission: Be it Resolved by the Weld County Planning Commission that the Subdivision Plat Prel. Plat — Allison Farm located on the following described pro- perty in Weld County, Colorado, to-wit: See attached be recommended (favorably) (Willr4 ) to the Board of County Commissioners for the following reasons: 1 . The preliminary plan conforms with the requirements of Section 5-4A. of the Weld County Subdivision Regulations. 2. The following referral entities have reviewed this request and set forth no objections to it: a. City of Greeley Planning Commission; OM ^Y!'Mty !:OMMIMMIR b. West Greeley Soil Conservation District -t ;7-1 C. Colorado Geological Survey; _ _ �: ,n d. Milliken Fire Protection District; }' • ; e. School District #6 ; ' SEP i9r'9 f. Weld County Engineering Department OREELE . c J- . Motion seconded by Bette Kountz . • Vote: For Passage Bob Ehrlich Against Passage Jim Gilbert Don Billings Jerry Kiefer Irma White Bette Kountz -- Fred Otis The Chairman declared the motion passed. and ordered that :, certified copy of this Resolution be forwarded with the file of this case to the Board of County Commis- sioners for further proceedings . CERTIFICATION OF COPY I, Shirley A. Phillips , Recording Secretary of the Weld County Planning Com- mission, do hereby certify tr: .t; the above and foregoing Resolution is a true copy of the Resolution of the Plan„ ng Cur'Tian of Weld County, Colorado, adopted on September 18, 1979 and :-e;:: rded ir. ' :ci: No. VI of the proceedings of �— the said Planning Commission. Dated the 19 day of September , 19 79 . ---\., \.; ,-i Secretary Sears and Company, Realtors S-163 : 79 : 9 PLANNING COMMISSION RECOMMENDATION September 18 , 1979 The specific recommendations and/or conditions for approval of the various referral entities are addressed as conditions for approval . The Planning Commission recommendation for approval is subject to the following: 1 . Septic systems may be allowed in the first filing of Allison Farm Subdivision. At such time as the City of Greeley sewer service is available, the septic systems will cease. 2 . The final plat shall show the following: a) A dedication of 20 additional feet of right-of-way along 20th Street and 59th Avenue. b) Realignment of 20th Street Road with Fairway Lane located on the east side of 59th Avenue so that the centerlines meet on the same point on 59th Avenue. c) How the irrigation ditch will be routed through the property to insure there is no interruption of water services for properties north of the proposed subdivision. l,-4.,.77gtok 0� LEGAL DESCRIPTION 7 I -1 A TRACT OF LAND LOCATED IN THE NORTH HALF (NI /2) OF THE NORTHEAST QUARTER (NEI /4) AND THE EAST HALF (EI /2) OF THE NORTHWEST QUARTER (NMI I{) OF SECTION 16, TOWNSHIP 5 NORTH, RANGE 66 WEST OF THE 6TH PRINCIPAL MERIDIAN, WELD COUNTY COLORADO; BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: COMMENCING AT THE NORTHEAST CORNER (NE COR.) OF SAID NORTHEAST QUARTER (NEI /4) OF SECTIORIE AND CONSIDERING THE EAST LINE OF SAID NORTHEAST QUARTER (NE /4) TO BEAR 3 DO' 26' 33' E WITH ALL BEARINGS. HEREIN SEINE RELATIVE THERETO; THENCE S 00' 26' 33' E, 330.04 FEET ALONG SAID EAST LINE OF THE NORTHEAST QUARTER (NEI /4); THENCE N 89' 36' 40' W, 40.00 FEET TO A POINT ON THE WEST RIGHT-OF-WAY LINE OF 56TH AYENEUE, SAID POINT BEING THE TRUE POINT OF BEGINNING; THENCE ALONG SAID WEST RIGHT-OF-NAT LINE 3 00' 26' 69' E,963.76 FEET, THE NORTHEAST CORNER (NE COI.) OF WEST RIDGE FOURTH FILING AS RECORDED IN THE RECORDS OF WEED COUNTY UNDER RECEPTION 11564665; THENCE N 59' 31 ' 26' W, 2635.60 FEET ALONG THE NORTH LINE OF WEST RIDGE FOURTH FILING WHICH 13 ALSO THE SOUTH LIME OF SAID NORTH HALF (MI /2) OF THE NORTHEAST QUARTER (NEI /{) OF SECTION 16, TO THE SOUTHWEST CORNER (SW COR.) OF SAID NORTH MALE (NI /2) OF THE NORTHEAST QUARTER (NEI/4) .OF SECTION III THENCE S 00' 20' 31' E, 1306.70 FEET ALONG THE EAST LINE OF SAID EAST RALF (EI /2) OF THE NORTHWEST QUARTER Nwl /4 OF SECTION 16 TO THE SOUTHEAST CORNER (SE COI.) OF SAID EAST HALF (E1 /2) OF THE NORTHWEST QUARTER (n1 /4) OF SECTION It; THENCE 3 89' {I ' 10' W, 1334.60 FEET ALONG THE SOUTH LINE OF SAID EAST HALF (EI 2) OF TIE NORTHWEST QUARTER (NWI/4) OF SECTION 16 TO THE SOUTHWEST CORNER (SW COR.) OF SAID EAST FALF (E /2 OF TIE NORTHWEST QUARTER NMI/{) OF SECTION 16; THENCE N 00' 23' 46' W, 260{.66 FEET ALONG THE WEST LINE OF SAID EAST HALF (EI /2l OF THE NORTHWEST QUARTER (Mwl /4) OF SECTION 16 TO A POINT ON THE SOUTH RIGHT-OF-HAT LINE OF WEST 20TH STREET; THENCE S 89' 36' 40' E, 3353.31 FEET ALONG SAID SOUTH RIGHT-OF-WAY LIME OF WEST 20TH STREET; THENCE S 00' 26' 33' E, 300.03 FEET; . THENCE 3 69' 36' 40' E, 620.07 FEET TO THE TRUE POINT OF BEGINNING. SAID TRACT CONTAINS 152.969 ACRES MORE OR LESS. 1)24 725 0;3( Nti REJUL 19)9 OD EIVEDWOW oars co, &DOI C" WO Date : September 18, 1979 CASE NUMBER: S-163 :79 : 9 NAME: Sears and Company, Realtors REQUEST: Preliminary Plan - Allison Farm Subdivision LEGAL DESCRIPTION: Pt. N?jNE1/4 and E1/2NW4, Section 16, T5N, R66W LOCATION: Southwest corner of the intersection of 59th Avenue and West 20th Street THE DEPARTMENT OF PLANNING SERVICES STAFF RECOMMENDS THAT THIS REQUEST BE approved FOR THE FOLLOWING REASONS : 1 . The preliminary plan conforms with the requirements of Section 5-4 A. of the Weld County Subdivision Regulations with the exception of nonconformance with Section 5-4 A. (1) (b) which will be dealt with as a condition of approval . 2 . The following referral entities have reviewed this request and set forth no objections to it : a. City of Greeley Planning Commission; b. West Greeley Soil Conservation District; c. Colorado Geological Survey; d. `Milliken Fire Protection District; e. School District #6; f. Weld County Utilities Review Advisory Committee; g. Weld County Engineering Department. The specific recommendations and/or conditions for approval of the various referral entities are addressed as conditions for approval. The Department of Planning Services staff recommendation for approval is subject to the following being accomplished: 1. Section 5-4 A. (1) (b) of the Weld County Subdivision Regulations requires that before approving a Preliminary Plan the Planning Commission shall determine that the subdivision will be served by a public sanitation system or on-lot sewage disposal system that will not result in water pollution. The Weld County Health Department has recommended against the proposed sewage treatment systems. The applicant shall sufficiently demonstrate to the satisfaction of the Planning Commission and Board of County Commissioners that no adverse impacts will result from the use of the proposed sewage disposal systems. In the opinion of the Sears and Company, Realtors S-163 :79 : 9 PLANNING STAFF RECOMMENDATION September 18, 1979 Department of Planning Services staff, this has not been done prior to this scheduled Planning Commission meeting. 2 . The final plat shall show the following: a) A dedication of 20 additional feet of right-of-way along 20th Street and 59th Avenue. b) Realignment of 20th Street Road with Fairway Lane located on the east side of 59th Avenue so that the centerlines meet at the same point on 59th Avenue. c) How the irrigation ditch will be routed through the property to insure there is no interruption of water services for properties north of the proposed subdivision. � .. � Date : September 4 , 1979 CASE NUMBER: S-163 : 79 : 8 NAME : Sears and Company, Realtors REQUEST: Preliminary Plan - Allison Farm Subdivision LEGAL DESCRIPTION: Pt. N1/2NE4 Section 16, T5N, R66W LOCATION: Southwest corner of the intersection of 59th Avenue and West 20th Street THE DEPARTMENT OF PLANNING SERVICES STAFF RECOMMENDS THAT THIS REQUEST BE Continued FOR THE FOLLOWING REASONS : It is the opinion of the Department of Planning Services Staff that some issues regarding this request are unresolved and need further clarification before a final recommendation can be formulated. The Department of Planning Services Staff is requesting that the following issues be addressed by the applicant: 1 . The City of Greeley has indicated city water is available to the site providing the developer meet and initiate all city requirements . The Greeley Planning Commission has recommended approval conditional upon the development meeting City standards . The applicant ' s intent as to whether or not the development will be built to City of Greeley standards which includes curb, gutter, and sidewalks is not clear at this time. The present proposal does not include standards for curb, gutter and sidewalk. If the development is not to be built to City standards, it is the opinion of the staff that the City will not provide water service. If this occurs, the Preliminary Plan submittal will not be consistant with Section 5-4 A. (1) (a) of the Subdivision Regulations. Said section requires determination by the Planning Commission that water service will be available prior to Preliminary Plan approval . 2 . Section 5-4 A. (1) (b) of the Weld County Subdivision Regulations requires that before approving a Preliminary Plan the Planning Commission shall determine that the subdivision will be served by a public sanitation system or on-lot sewage disposal system that will not result in water pollution. The Weld County Health Department has recommended against the proposed sewage treatment systems . The applicant needs to sufficiently demonstrate that no adverse impacts will result from the use of the septic systems. In the opinion of the Department of Planning Services Staff, this has not been done at this point in time. '3 . The County Engineer has raised the following issues : 1. Irrigation ditches and owners should be shown in accordance with Section 5-1B (16) . Relocation of ditches must be approved by their owners . 2 . Common areas should be indicated in accordance with Section 5-1B(21) . 3. The "Soils Investigation" indicated groundwater problems exist and suggest a subdrain system is necessary. This problem should be addressed. Cost estimates for this system should be included in the "Summary Statements" . 4 . The drainage report indicates the West Basin retention pond would release the 100 year storm for the drainage above the proposed development. I do not think this could be the case. It is too complicated a problem to explain in this memo. The applicant ' s engineer should contact this office to resolve the problem. 5. Twentieth (20th) Street Road as it intersects 59th Avenue should line up with Fairway Lane on the east side of 59th Avenue. 4. The City of Greeley indicated the following issues: 1 . should show dedication of 20 feet for arterial street right- of-way along 20th Street and 59th Avenue; 2. with the provision of 20 feet of additional right-of-way, lots along 20th Street and 59th Avenue must also meet the 150 foot lot depth for lots backing onto an arterial street; 3 . all unidentified parcels should be identified as outlots and the proposed uses indicated; 4. if the large outlot located along 20th Street and the north- west corner of the subdivision is to be set aside as a public park, then the City requests that additional access be pro- vided to 20th Street Road on the south by elimination of Lots 1, 2, 3 & 4 in Block 7 ; 5. 20th Street Road is not aligned with Fairway Lane located on the east side of 59th Avenue. The above issues need to be addressed by the applicant prior to the Department of Planning Services Staff completing comments and recommendations. \I\ l r DEPARTMENT OF PLANNING SERVICES tits APP PHONE 1303) 3564DOD EXT. 400 915 10TH STREET % 1D . GREELEY,Y, COLORADO 805 31 COLORADO ' NOTICE OF PUBLIC HEARING The Weld County Planning Commission will conduct a public hear- ing on September 4 , 1979 at 1 : 30 p.m. _ to review a request for approval of a nreliminary plan for Allison Farm Subdivision from Sears andCorloany, Realtors on a parcel of land described as Pt . N14 tee anc "P.;; N"vy`_` Scc-tion 16 , T5N_ R66W of the 6th p.m. , Weld County, containing 152 . 969 acres more or less. Colorado This public hearing to be held by the Weld County Planning Commis- sion for the consideration of the above referenced request will be conducted in the Weld County Commissioners ' Hearing Room, First Floor, Weld County Centennial Center, 915 10th Street , Greeley, Colorado. Comments or objections related to the above request should be submitted in writing to the Weld County Department of Planning Services, 915 10th Street, Greeley, Colorado 80631 , before the above date or presented at the public hearing on September 4, 1979 Copies of the application are available for public inspection in the Department of Planning Services, Room 310, Weld County The lWeld C untayLPlanning C n Centennial Center, 915 10th Street, Greeley, Colorado (35 mission will conduct a publi hearing on September 4,1979 at 1:: extension 404) . p.m. to review a request fe approval of a preliminary plan to Allison Farm Subdivision fror Chuck Carlson , Chairman - Sears and Company, Realtors on parcel of land described as P' Weld County Planning Commission NbNE!.and E1/2NWV ,Sections T5N, R66W of the 6th p.m., Wei. County, Colorado, containin, To be ublished in the: 152.969 acres more ' less. P Platteville Herald/LaSalle Leader This publichearingto be heldb the Weld County Planning Commis sion for the considegation of thi To be published one time by: August 2, 1979 (publication di above teterin th re eld will la Conducted the Wing Coom Commissioners'flo ,Wld Hearing Room Weld County, Greeley Center, 915 10thmm Street, jeceley Cobradto Comments q obi ecbon: G(� related to the above request shoulc Received b be submitted in writing to the Welt '- '- County Department of Planning Services, 915 10th Street, Greeley, 7- Colorado p _� r Colorado 80631, before the above Date: 7 date or presented at the public hearing on September 4, 1979. Copies of the application are available for public inspection in - the Department of Planning Ser- vices, Room 310, -Weld County Centennial Center, 915 10th Street, Greeley, Colorado (356-4000 eaten. sion 404). Chuck Carison,Chariman Weld County Planning Commission Published in the Platteville Herald and La Salle Leader, Thursday, August 3/9)9. JL mk PRELIMINARY PLAN BDIVISION APPLICATION Department of Planning Services, 915 - 10th Street , Greeley, Colorado PHONE: 356-4000 Ext . 404 FOR PLANNING DEPARTMENT USE ONLY: CASE NO. S' %(, • 19 $ APPL. FEE 4 8105.00 ZONING DISTRICT RECORDING FEE N R DATE JUL 6 1979 RECEIPT NO. t O 10sb 1 APPL. CHECKED BY C.a C. TO BE COMPLETED BY APPLICANT: (Print or type only except for required signatures) : I (we) , the undersigned, hereby request a hearing before the Weld County Planning Commission concerning proposed subdivision of the following described unincorporated area of Weld County. LEGAL DESCRIPTION: (See attached sheet) (If additional space is required, attach an additional sheet of this same size. ) NAME OF PROPOSED SUBDIVISION Allison Farm EXISTING ZONING Agricultural PROPOSED ZONING Estate and High Dens TOTAL AREA (ACRES) 152.97 NO. OF PROPOSED LOTS 168 LOT SIZE: AVERAGE 25,000 S.F. MINIMUM 6,250 S.F. UTILITIES: WATER: NAME City of Greeley SEWER: NAME Individual Septic Systems GAS: NAME Greeley Gas Company PHONE: NAME Mountain Bell DISTRICTS: SCHOOL: NAME School District 6 v SIRE: NAME Milliken Fire District DESIGNERS ' NAME ARIX ADDRESS 2021 Clubhouse Drive, Greeley, CO PHONE 356-4444 ENGINEERS ' NAME ARIX ADDRESS 2021 Clubhouse Drive, Greeley, CO PHONE 356-4444 FEE OWNER OF AREA PROPOSED FOR SUBDIVISION NAME Theodore & Sandra L. Blehm ADDRESS 11357 Weld Co. Rd. 52. Milliken. CO 80543 PHONE 587-4329 NAME Kevin W. & Vicki B. Mill ADDRESS 200 Johnson Drive, Space 11 Fort Collins, CO 80521 PHONE 482-6917 NAME Dean H. Avers & Co. ADDRESS 2308 23th St.. Greeley. CO 80631 PHONE 352-1800 I hereby depose and state under the penalties of perjury that all statements, proposals and/or plans submitted with or contained within this annlication are true and correct to the best of my knowledge. COUNTY OF WELD ) STATE OF COLORADO) Signatu Ow r r A thorized Agent Subscribed and sworn to before me this 1r-; ay o 19-A SEAL f C\I �� NOT RY P BLIC My commission expires: My Commission expires Agust 10, 1981 WCDPS-78-1 Di( • LEGAL DESCRIPTICH 77ly 11 I A TRACT OF LAND LOCATED IN THE NORTH HALF (NI /2) OF THE NORTHEAST QUARTER (NEI /4) AND THE EAST HALF (EI /2) OF THE NORTHWEST QUARTER (01 /4) OF SECTION 16, TOWNSHIP 5 NORTH, RANGE 66 WEST OF THE 6TH PRINCIPAL MERIDIAN, WELD COUNTY COLORADO; BEING WORE PARTICULARLY DESCRIBED AS FOLLOWS: CO*4ENCING AT THE NORTHEAST CORNER (NE COR. ) OF SAID NORTHEAST QUARTER (NEI /4) OF SECTIONI6 AND CONSIDERING THE EAST LINE OF SAID NORTHEAST QUARTER (NE /4) TO BEAR S 00' 26' 33' E WITH (LL BEARINGS HEREINBEING RELATIVE THERETO; THENCE $ 00' 26' 33' E, 330.05 FEET ALONG SAID EAST LINE OF THE NORTHEAST QUARTER (NEI /4); THENCE N B9' 36' 40' W, 40.00 FEET TO A POINT ON THE WEST RIGHT-OF-VAT LINE OF 56714 AVENEUE, SAID POINT BEING THE TRUE POINT OF BEGINNING; THENCE ALONG SAID WEST RIGHT-OF-NAY LINE S 00' 26' 69' E,963.75 FEET, THE NORTHEAST CORNER (NE COR.) OF WEST RIDGE FOURTH FILING AS RECORDED IN THE RECORDS OF WELD COUNTY UNDER RECEPTION (1584-865; THENCE N 89' 31 ' 28' W, 2638.60 FEET ALONG THE NORTH LINE OF VEST RIDGE FOURTH FILING WHICH IS ALSO THE SOUTH LINE OF SAID NORTH HALF (NI /2) OF THE NORTHEAST QUARTER (NEI /4) OF SECTION II, TO THE SOUTHWEST CORNER (SW COR. ) OF SAID NORTH HALF (41 /2) OF THE NORTHEAST QUA TEN (NEI/4) Of SECTION I1; THENCE S 00' 20' SI' E, 1308.70 FEET ALONG THE EAST LINE OF SAID EAST HALF (EI /2) OF THE NORTHWEST QUARTER I /4 OF SECTION 16 TO THE SOUTHEAST CORNER (SE COR. ) OF SAID EAST HALF (EI /2) OF TIE NORTHWEST QUARTER (WWMd1 /4) OF SECTION 1/; THENCE S 69' NI ' 10' W, 1334.60 FEET ALONG THE SOUTH LINE OF SAID EAST CALF (El i2) OF THE NOtTHWEST QUARTER WWI/4 OF SECTION I6 TO THE SOUTHWEST CORNER (Sw COR.) OF SAID EAST FALF (EI/2S OF TIE NORTHWEST QUARTER (0I/4) OF SECTION 11; THENCE N 00' 23' 4-8' W, 2604.88 FEET ALONG THE WEST LINE OF SAID EAST HALF (EI /2) OF THE NORTHWEST QUARTER (NMI /4) OF SECTION 16 TO A POINT ON THE SOUTH RIGHT—OF-WAY LINE OF WEST 2 STREET; THENCE $ 89' 36' 40' E, 3353.31 FEET ALONG SAID SOUTH RIGHT-OF-WAY LINE OF WEST 20TH STREET; THENCE 3 00' 26' 33' E, 300.03 FEET; • THENCE 3 69' 36' 40' E, 620.07 FEET TO THE TRUE POINT OF BEGINNING. SAID TRACT CONTAINS 152.969 ACRES WORE OR LESS. ,)31,076 654�ti RIo ti REUUL 1 w �919 EIN DLt. V Mooning C6ggg _ • • 4. ALLISON FARM Re-zoning and Subdivision Application Statements It is our feeling that while the policies of the Weld County Com- prehensive Planning do not contemplate the type use proposed in our sub- division, the changing conditions of the area clearly demonstrate both a demand on the part of the public as well as a need for Allison Farm as herein proposed. Since the time of adoption of both the Greeley Com- prehensive Planning and the Weld County Comprehensive Planning, there has been re-zoning and/or substantial new construction within the im- mediate area of Allison Farm, i .e. , Westridge Subdivision, Bird Sub- division, Knaus Subdivision, Hiland Knolls. Several of these consist of one (1) acre tracts served by septic systems designed for single family residential use. Allison Farm contemplates that each property owner shall construct and maintain his/her own sewage-septic system; however, the layout of utility easements lends itself to these property owners being able to connect with central Greeley sewer services, at such time in the future that such services are available should the pro- perty owners so desire. This is especially true in the requested multi - family zone where it is proposed that a package septic system shall be constructed and maintained to handle the affluent discharged from this area, said system to be constructed in a logical and accessible location thereby minimizing the expense should it be deemed necessary to tie in to central sewage services. It should be pointed out here that at this time, the City of Greeley does not intend to serve this area with pub- lic sewage services until 1984 at the earliest. It would seem to us that the changing factors of this area would dictate growth and devel - opment before 1984. The aforementioned subdivisions are presently served by the City of Greeley water or Central Weld Water. Allison Farm can and will be served by City of Greeley water services. Also, all said subdivisions do not have or intend to construct curb, gutters and sidewalks. The economics of the development of 20,000 square foot lots, or greater, does not lend itself to providing these improvements and the size of said lots allows retention of run-off water to be kept on individual lots. The construction of paved streets in Allison Farm will be in total compliance with County specifications. In view of all the factors mentioned herein, we feel that Allison Farm is both timely and well suited for the location. The fact that there are two (2) subdivisions with the same basic concept as Allison Farm, contiguous to this property, would suggest that the proposed 20,000 square foot lots , or greater, are compatible with the surrounding areas. The proposed multi -family area located on the west portion of Allison Farm has been designed and coordinated to blend in with the larger lots in the subdivision. As Greeley continues to grow to the West, (with the present Greeley City limits being little more than one (1) mile east of this site at the time of this application) more and more multi -family/higher density areas will be requested. Highland Hills presently has approximately fifty multi-family residences within one mile of this site. 0Ur application represents a natural trend and demand toward this type of use. Further, it should be pointed out that the land uses in the immediate area are becoming more varied as our community's growing population expands to the west. ARTS, Greeley Family Sports Center, Geriatrics, Aims Community College, and the proposed skating rink support this trend of changing land use. In summary, we feel that Allison Farm is an exciting, compatible, and well planned development. • 1221 eighth avenue greeley, colorado 80631 303-356-7700 July 10th 1979 Realtors SUMMARY STATEMENTS Allison Farm Subdivision Application 1 . The total development area in Allison Farm is 153 acres. 2. There are 168 lots in the proposed Estate zoned area. 3. All building construction will be residential dwellings. 4. There will be a five acre recreational vehicle parking area designed and maintained exclusively for Allison Farm resi - dents' use. 5. We will connect to the West Greeley Grid of the City of Greeley water system. The minimum pipe line size is 8", which will supply water in quantities substantially in excess of the minimum requirements of the residential sub- division as proposed. 6. Each of the Estate lots will be served by septic systems constructed in compliance with Weld County and the State of Colorado requirements, and under Weld County Housing Department supervision, (please refer to the engineers re- ports as regards domestic sewage handling for the HD zoned district) . 7. Estimated Construction Costs for Sewer: "0" except for the high density, which costs are estimated at $72,500.00. The estimated cost of water distribution lines will be $10.50 per lineal foot, including main extensions, which footage will approximate the lineal footage of streets. The esti- mated cost ofr storm drainage piping and retention area construction will be between $10,000.00 and $15,000.00, de- pending upon design. Street construction, shaping, (dirt work) , base and asphalt, and culverts as required, will average $18.00 per lineal foot. Allison Farm will be de- veloped in phases with the total anticipated cost of lot improvements in each phase to be less than $100,000.00. Phasing will start at the east property line and move west- ward, consistant with the rate of lot sales. Costs for these improvements will be funded by the development partner- ship. 1g910)j 8. The only special district involved in Allison Farm is the 406 no. et. j Milliken Fire District. n) JUL 1979 Is' r‘iRECEI VEb residential, investment & commercial sales, property management, an evicPf os t �nni 8 Cem ' ti� ti0 ��4)91SZPZ G fi y • ' /, +S t 'l 'fr ‘f;- 1 *�14 4, '` oft ‘rte^ 4 t 1 ' A v Ti { "....�c.✓+f5tq -C .7 4 ate^ x ? *1�i+F '-t4r4+, St y 1. siY ' ' it i i I t x _ 97 GREELEY CIVIC CENTER July 9, 1979 ARIX GREELEY. COLORADO 80631 PHONE 303! 353-6123 JUL 11 1979 r�, Mr. Arthur Uhrich ARIX 2021 Clubhouse Drive Greeley, Colorado 80631 Dear Art: With reference to your July 5th letter concerning the Allison Farm preliminary plat, the City of Greeley does have a water main which borders the property which could serve the proposed subdivision. The actual granting of water taps is contingent, however, upon approval by the Greeley City Manager after approval of the subdivi- sion concept by the Greeley Planning Commission. If you have any further questions, please contact me. Sincerely, OF GREELEY Darryl D. Al eman Director Water and Sewer Department DDA/ld S<\2131415/6/c. j dip Rs 470., N cFi� "A COMMUNITY OF PROGRESS" Lt co 9a 4 to ��o144%, ' , c- 1 1£OF6282 L- b'{� X . . ' I _ I/ tio 0 pe 3fficile" Process L _ Package Plantsfor § econdary Wastewater Treatment €, 89,07/ -M REc 1.949 w� Fik rn cin q•40/4 o00 bey�� '. 3/446, 41 f , : ^}4 4/ P'ir FF 4.,.1":4T-.--;-_,° . w k�. 11 ` :4 4, a� v 1 ,,,.•.4 y• 1.., PTA. ... �' t,:_ + ' e} '� Wt 4' a . t . _ ._ _ . .:_, .._ __ !;. u O r® 41L)v228-9100 TELEX 26-9538 9 CORPORATION Copyright © 1975 by Autotrol Corporation Pj, Sr ,�,.Jiiit- 1.1'Y� . 1, r''a- �'' yam..a.47; K4:40 ..'I [ ,ip, 1•y fit ~r f f"` L,(S: a.0.;* t l 1 4 Y "r...".; 4 at ,fit .r t. i 'fi" .i. 1 t+'[ `l '.11.t c :-14,:f4, �y wx) tb i ,�i ~t- i"'� .y, b ,i .: t,i_ - 711 .-< ac1- vs:� } - ':Y.-.- a 9t ` ;w; Nf .t]= it.,- :.S f. as'+''�'>��,#`a �'s'.�r+!x, ' 'aye, �'; '.�' 3 y'.•N°b ;'S:.:"';k:v'!!:ie,1-3. yf t r e t _ };a.`. �1 {q'� /�/.-��,s. te e• .� Vr E' dqa .+id' .tT' � 7 �. f3 '1! r ,.r Vie• a nti- {pty�i'S 4 { •_ _ ' 'f tsi � �'u tt 4 sF g r t �'- 10- 'fti.cog n 5.:. ".'> r4,e -2225` RIO-MODULE'Packaged Secondary Wastewater Treatment Plant, BIO-MODULE''SHAFT for Secondary Wastewater Treatment in Concrete Tankage. APPLICATIONS Residential Subdivisions Schools and Campgrounds Apartments and Condominiums Recreational Areas Industrial Parks Highway Rest Stops Food and Beverage Processors Construction Camps Temporary Treatment Plants Autotrol's BIO-SURF process is the most advanced biological BIO-SURF Media system available for secondary wastewater treatment.It is a The photo shows a cross-section of the B10-SURF media. It simple,compact and economical method of treating a wide _�. I consists of alternating flat and corrugated sheets of polyethylene range of domestic and industrial wastewaters.It achieves high which are thermally bonded for strength and long service life. degrees of treatment to provide effluent suitable for discharge The corrugated sheets are vacuum-formed with integral radial to lakes and streams,including s those requiring removal of ss paages.The radial passages allow a free flow of wastewater. ammonia nitrogen as well a as BOD and suspended wlids' air and stripped biomass in and out of the media as it rotates. Process Description The BIO-SURF process is a secondary biological treatment t e R,. - system-It consists of from 2 meter to 12-foot diameter corru- I -' A " e `� + '�Lr Ay gated polyethylene media,which is mounted on a horizontal i ,r�' - +- '" >.V, shaft up to 20 feet long and placed in a steel or concrete tank a 't a,.yr ' ;1. t�!'!gz",a ter The media is rotated at 1.5-3 rpm while about 40%of the { �'-max 1 '�7 5 .I. z--.a 'em •,• surface area is immersed in wastewater. Acoa,,,, ,,, , 3"'w 'A ',4t-r !J , 'y^ ;;tFt Shortly after start-up,microorganisms begin to grow on the I 'I `'Z A surface of the media.One to two weeks later,the entire surface 4` '•' ' - �, - t-,a, . area is covered with a 2-4 mm thickness of biomass. t ';;yy ; y,, or*:..fi.� a- •:.efi z i., - \A— ?•Ir \ I f •; .:j.? s:$4.;.',1_7.„ " >y,+� •0• : T-i ter ,- N l> :♦A 4' H' SJ t` ,' .e + aQ ..^ .` -ice, :h 1.. ®� ® ate—'�'.�r� nsue "' —a 4.4."...,?' ••4-...,±%,... ,rw"vs 5 z1r The BIO-SURF process is ideally suited for package plant � s y�,es;^*,may .,, applications where process simplicity and low maintenance are 'eq.,45" e'"! -. t "- `s.-.•r'7C.`/ ..„ critical requirements.Low power consumption,stable operation , . s"fe, s T'tix.. ' f -' under large flow fluctuations,and ease of sludge handling also `,ti, { � % I ! contribute to the attractiveness of the BIO-SURF process for 1 ",1 r� % this application. 4 ,s-,•� Hy Many 810-SURF process package plants are currently in oper- s' Y"St S, ation in a wide variety of applications,including subdivisions, apartments,industrial parks,small food processors,schools. Rotation of the media alternately contacts the biomass with the campgrounds,recreational areas,highway rest stops and wastewater for removal of organic materials and exposes it to drilling camps.They are being used to treat flows ranging from the air for absorption of oxygen.The amount of attached bio- { 5.000 to 50.000 gpd. mass is relatively large compared to the amount of wastewater under treatment—the equivalent of 10,000 to 20.010 mg/I d Transportable Plants mixed liquor volatile solids.This allows high degrees of treatment to be achieved for relatively short retention times—usually about IMO-MODULE units are transportable secondary treatment one hour for most treatment requirements. plants,which can be used to meet temporary treatment require- ments.When operated in conjunction with primary treatment Rotation of the media at a peripheral velocity of 1.0 foot per and sludge disposal facilities,they can provide complete second exerts shearing forces on the biomass which strips ex- secondary treatment at one site for a given period of time and cess biological growth and prevents clogging.The mixing action then can be easily moved to another site.Applications for of the media keeps stripped biological solids in suspension BIO-MODULE units include subdivisions awaiting connection until the flow of treated wastewater carries them to a clarifier to municipal sewer systems and small communities eventually for separation and disposal. to he connected to regional treatment plants. 2 it X - f RIO-SURF PROCESS BENEFITS Process Simplicity.Because wastewater flows through the personnel costs,too.There is no need for skilled personnel BIO-SURF process just once without any effluent recycle,and to constantly supervise the operation. because settled secondary sludge is not recycled,the process is High Degrees of Treatment.By utilizing an appropriate very simple to operate,and no complicated controls are neces- amount of BIO-SURF media,very high degrees of treatment sary. RIO-SURF process performance does not depend on , can be achieved.Effluents of less than 10 mg'I BOD and sus- operator skill.Continued rotation of the media assures proper I pended solids and less than 1 mg/1 ammonia nitrogen can be operation. consistently produced. Process Stability.The BIO-SURF process is not upset by Favorable Solids Characteristics.Sludge produced by the fluctuating hydraulic or organic loading.A hydraulic surge will process has excellent settling characteristics-10 to 15 feet per not wash out the microorganism population which is captive in I hour.Solids loading on secondary clarifiers is quite low,which the media.An organic shock load will not cause bulking and I allows the use of shallow clarifiers. Because there is no need loss of solids from the secondary clarifier.Other wastewater for rapid recycling of settled solids,simple scraper-type collector treatment systems cannot operate efficiently under such condi- mechanisms can be used. lions wit hot n continuous operator supervision. Ease of Expansion.Modular cnnsimrt inn.shallow excavation. Low Maintenance.The components of a BIO-SURF system and low hydraulic head loss allow the BIO-SURF process to be are simple and ofer Lion is uncomplicated.The slowly rotating easily expanded to meet increased wastewater Onus or to meet media is not subjected to unusual stress or to shock Very few higher treatment requirements.These same characteristics metal parts are used in the construction of the equipment.The enable the BIO-SURF process to be easily incorporated into media does not require cleaning.Maintenance consists primarily an existing plant to upgrade its capacity and degree of - of periodic lubrication of drive system components. treatment. ' Low Operating Cost.The slowly rotating surfaces require very Absence of Nuisances.Rotation of the media prevents clog- little power.Thus,power requirements are much lower than for ging and continually exposes all the biomass to the air to conventional processes—only 0.3 hp-hr per pound of BOD provide efficient aeration and to eliminate objectionable odors. -I removed for a typical application.With energy resources dwin- , There are no noisy compressors or blowers-and there are no .17 dling and power costs rising,this characteristic of the process is foaming problems. Ibecoming increasingly important.A B1O-SURF system saves APPLICATION TO PACKAGE PLANT OPERATION Pretreatment i MODULE unit.These systems are applicable to wastewater I Pretreatment requirements for the BIO-SURF process are flows of 5,000 gpd up to 90,000 gpd. e limited primarily to removal of large,dense solids which might otherwise settle out in the BIO-SURF tankage. Removal of I BIO-MODULE SHAFTS these materials can be achieved by primary settling or fine BIO-MODULE SHAFTS of 2.0-meter and 12-foot diameter are screening.In many applications,a simple septic tank will pro- also available for installation in concrete tankage and cover a vide adequate pre-treatment.For some industrial wastes,there range of flows up to 250.1100 gpd with supplementary waste- may be additional requirements for nutrient addition and pH water pumping and 135.000 gpd with bucket feed. control. Flow Equalization I BIO-CLARIFIER SHAFTS Because many package plant applications often have extreme BIO-CLARIFIER SHAFTS for sludge removal are available for fluctuations in wastewater flow,it will improve treatment effi- installation in concrete secondary clarifiers to follow the BIO- ciency and reduce the required size of BIO-SURF process MODULE SHAFTS and are applicable up to 100.000 gpd. equipment when these flow variations are equalized.This is Final Effluent and Sludge Disposal accomplished by installing an equalization tank after the pre- Final Effluent and Sludge Disposal treatment step.In addition to reducing the required BIO-SURF Effluent from the BIO-SURF process clarifier can be discharged process equipment, it also reduces the required size of the to surface water or into a new or existing tile field,sprayed onto secondary clarifier and chlorine contact tank When a septic fields or into wooded areas,or placed in evaporation ponds. tank is used for pretreatment,it can also include the flow Secondary sludge from the clarifier can be stored aerobically or equalization step. anaerobically in a sludge holding tank.A septic tank for pre- treatment can also serve to store secondary sludge.From time BIO-MODULE UNITS to time,the septic tank or storage tank is emptied for ultimate BIO-MODULE units of various lengths and in 2.0-meter disposal of sludge.This can be accomplished by a septic tank and 3.2-meter diameters are available in prefabricated steel pumping service or by drying beds and land fill. tankage including BIO-SURF media,bucket pumping mechanism and drive system. Enclosures BIO-MODULE units have capacities up to 200,000 gpd.Sup- BIO-SURF process package plants require enclosures to pre- plementary wastewater pumping is required where treatment vent excessive loss of heat from the wastewater during winter capacities exceed 90.000 gpd. operation and to avoid exposing the biomass directly to cold ambient temperatures.This can be accomplished with a fiber- BIO-CLARIFIERS glass general purpose cover supplied by Autotrol or with a BIO-CLARIFIERS with sludge removal mechanism and conventional structure.Forced ventilation is not necessary. Heating is necessary only for extreme climatic conditions. ! chlorine contact tank are also available for use with the BIO• - f 3 • B1O-SURF PROCESS DESIGN PROCEDURES BOD Removal Septic Tank Effluent Hydraulic loading has been found to be the principle design ! A septic tank provides a very simple means of pret eatment. criterion for the 131O-SURF process.To determine the amount However,it does produce an effluent which is somewhat more of 131O-SURF media required for a specific application requires difficult to treat than a fresh waste. Field testing has shown simply that the appropriate hydraulic loading be selected from that degrees of treatment equal to those on flesh voasre are the figure below. Dividing the design flow by the hydraulic achieved on septic tank effluent at lower hydraulic loadings. I loading rate yields the amount of BIO-SURF media surface - To alter the septic waste to fresh conditions and develop an area required. acclimated culture requires that the amount of 131O-SURF The ROD removals shown in Figure I are for the BIO-SURF media determined for a fresh waste application be process after secondary clarification and do not include any ' increased by 50%for septic waste. BOD reduction from primary treatnwnt.When using fine screen- ing or septic tanks for pretreatment,we suggest that no BOD Temperature Correction reduction be credited to the pretreatment.Because the amount Wastewater temperatures above 55 degrees F do not affect of BOD removal by pretreatment is relatively small,this prose- treatment efficiency. Below 55 degrees F.the RIO-SURF dure results in just a slight increase in 81O-SURF media - process,like all biological treatment systems.will show de- requirements and provides a slightly conservative basis for creased treatment efficiency.However.by operating at a lower design. • hydraulic loading,equal degrees of treatment can be main- The BIO-SURF process can be designed to consistently pro- ' tamed.Figure 2 shows temperature conection factors which duce effluent BOD of 10 mg'1.Effluents of less than 10 mg l are used to increase the amount of 81O-Sf IRF media for t have been produced by the 81O-SURF process when operated 1 conditions of prolonged low wastewater temperatures. at less than its design flow.This points out a significant benefit for the process in that it produces a higher quality effluent ; •°- r_i-r—FT t I 1-"— .....T7 7 - - --°m,..,.., I when underloaded,unlike other processes which have difficulty e —iT--�-.- -- T• o.._ 1_ operating efficiently when underloaded. I g '°----"- -` - -- .- . ' 131O-SURF process effluents of 10-20 mg/1 BOD consist of M j ��.-. .-_- -_ - I approximately 1/3 soluble and 2/3 insoluble BOD.Where effluent quality of less than 10 mg/I BOD are consistently required.tertiary ( l'- ° . - filtration is recommended. ° ----- v"v - -t Q '.'�i'�C'�i ■�■■ t J • n I n \ I _ j a ° ; ,_ j ' % . I 2 •Wastewebr Temperature°F°' » O ° > u.�, o I Flow Equalization _ i The size of ihe flow equalization tank following pretreatment is _ o ■■■■.■■ ...� _ ■ ? determined on the basis of the daily wastewater flow pattern. o '° ns ■■■■.■■ I ^ ■� The purpose of the flow equalization tank is to provide a reason- m at °�■■■.■.�■ ■.■ ably uniform wastewater flow to the BIO-SURF process even though most of the daily flowover may enter the plant a ' 1 ; relatively short time period.The following are general guidelines Hydraulic Loading, GPO/FT' for determining the flow equalization tank capacity: Suspended Solids Removal - Daily Period when Wastewater Recommended Flow Equaliza- • Flow is Less than 25%of tion Tank Capacity as Suspended solids removal occurs in the B1O-SURF process in 1 Average Flow Percent of Daily Flow • the same proportion as BOD removal.When the process is - Hours 46 designed to achieve a specific effluent BOD concentration,the 0 0 suspended solids will be at the same or slightly lower • 4 10 concentration. L 6 IS t -. 8 25 1 12 33 1 14 50 16 60 I18 or more 67 4 het • x -. a Ammonia:Nitrogen Removal I 1- Regulatory agencies are beginning to impose requirements for , ------ I -1 ----� the removal of nit ngenous oxygen demand,NOD.(as ammin isInitrogen)in addition to BOD and suspended solids removal. - o s' _— -- --_— afLFbf Suer PROCESS The RIO-SURF process is well-suited to the removal of NOD. a J._- or FFw.a.Errsurvi �_ r„,„,,,EF.GE tit,„F.TIO Fx•rause of the natural development of nitrifying organisms in j I _4 • b ,asr,eoo.mo•I the latter statics of multi-stage BIO-SURF installations. I '° -��_l._ Figure 3 shows the design relationship for ammonia nitrogen x - �-- _1-______- __ I 'H ° lemnval. RIO-SURF media requirements for nitrification must a ,f be compared to those for ROD removal,and the larger of the ' ' '' I j I �1 'so two determines equipment selection. : .ti 1 O • - it I L ‘, I Is_i E. I Inlet BOD Concentration,mg/P I ' 'a _ I_ U 3, r; ;o Maximum Ammonta Nitrogen; Concentration,mg/f.. is — l a i to C — _ 1 LJ ro rs w as w n I H. ° - _ BIOSURF PROCESS I J j 4 %Ammonia Nitrogen Removal • 1r NITRIFICATION OF PRIMARY EFFLUENT 6 II '-A ._ __ I { TI I i i ! Temperature Correction F T `� Nitrification efficiency is also decreased by loin wastewater a I} f I i- -�— i � � �� 1--��_I`•,i I -T —i� temperature Figure 5 contains temperature correction(actors e �_ 'Region Of Unstable I i i which will compensate for the low temperature conditions. I `—Nitrification i�• I Ii I 1 \ J •-o r„ is r.` 3.0 3.: ..o 3 Hydraulic Loading on BIOSURF Process,GPD/FT' .. T %Ammonia Nitrogen Removal - I TEMPERATURE CORRECTION FACTOR Septic Tank Effluent LL 55 FOR NITRIFICATION e. As for ROD removal,the lower treatability of septic wastes o requires 50% more RIO-SURF media for nitrification. '� Peak Flow Correction j o \ With widely varying flow conditions,there is the danger that i - \ -- -- nitrifying bacteria may be displaced from the latter stages by the more rapidly growing carbon-oxidizing bacteria.To avoid n �_ this,it is necessary to prevent high concentrations of BOD d - from entering the latter stages.Figure 4 indicates the allow- able ~ peak to average flow conditions which will achieve Ihis. _ 1 If the actual peak to average flow ratio exceeds the allowable value,either flow equalization must be included or the average design flow must be increased along with the required RIO- 5 Wastewater Temperature°F SURF media area. Equipment Selection When the appropriate amount of RIO-SURF media surface area has been determined from the preceding design prose- . lures,the desired form of BIO-SURF process equipment can be selected from the following pages. 1 ;v s • 4. I BIO-MODULE UNITS BIO-CLARIFIERS Description ; Description A BIO-MODULE unit is a packaged wastewater treatment ' A BIO-CLARIFIER is a secondary clarifier with rotating sludge plant designed to treat domestic or industrial sewage through a scoop and chlorine contact tank incorporated into a semi- process where fixed aerobic cultures of microorganisms remove ' circular steel tank.One or more of these units are intended to both dissolved and suspended organic matter from the waste- I operate in conjunction with a RIO-MODULE unit. water..A B10-:MODULE unit consists of a wet well. rotating bucket feed mechanism,and multi-stage RIO-SURF Operation media incorporated into a semi-circular steel tank The RIO- A baffle in front of the clarifier influent uniformly distributes the MODULE unit is intended to operate in conjunction with pri- flow throughout the clarifier.Clarified wastewater passes Darr mart'treatment scondary clarifier and sludge disposal facilities. a weir in the opposite corner of the clarifier into a baffled I chlorine contact tank Sludge which settles in the secondary Operation , clarifier is picked up f!r the sludge scoop and Hobbs by gravity After pretreatment,wastewater enters the RIO-MODULE wet to digestion and storage equipment.The sludge scrap Opel-Ales t well where it is picked up by the rotating buckets.The in the following manner: buckets are attached to the main shah by hollow anns.As the As the scoop is rotated into the clarifier,it pushes sludge down bucket is raised to the same elevation as the shaft,the waste- bottom. the side and across the As the swop rotates into the water flows down the hollow ann and is discharged parallel to 7 o'clock position,the reservoir,to which it is connected bk., the shah over a bulkhead into the first stage of the BIO-SURF , hollow scup on anus,enters the clarifier.As it duos,wastewater process treatment. pushes sludge in the scoop through the sq>;on ams to fill the After entering the first stage of the BIO-SURF process,waste- ! reservoir.As the swop and reservoir complete the rotation. water passes through a submerged orifice in the center of each . sludge is emptied from the reservoir through hollow connecting bulkhead separating individual stages of treatment.Mixed . arms to the hollow drive shaft. From there, it flows by gravity liquor from the last stage of media passes over a weir and : to sludge handling facilities.The scoop has an independent flows to a secondary clarifier. . drive system and rotates at a speed of 4 RPH. DRIVE MAINiF.NPNCE I CLEANANCE 810 SURF MEDIA INTERMEDIATE BAFFLE ID.5 �Y) ❑ f \ 7 BIO-MODULE 3.2m^ r MODEL NO. 1621104 2L164 621QD4 I •Ellechve media area(WI 11t100� 39 500 56 000 I — 12. ..Operalinq WI (lb I 53000 )3.000 94000 LL._. _ Shlpom9 el llb I 16000 20000 24000 (31 ❑ — .—n Motor horsepower 11s2 3 T' tl s _ i _ A I S'3'4 20'-3'� 25'3'i 1)n' r B t6-6'5" 21'-6,,,"21'-6,,," 26'68- J--- 2 B Buckel pump Caoac,hes with 1.2.3 or 22.500 45000 6).500 90000 _ � 4 buckets IGPD) 'I nrn..er.r........n..e.. ..non n..,.e_n,...... AB r—BUCKET GUARD '• . 1 GEAR REDUCER BUCKET FEED DRIVE ■ /NAME PLATE / SHAFT BEARING _ _ _ O —__- _ lilt ADJUSTABLE RFLGW WEIR ` r B"Ef FLUENT WRIER LEVEL CONNECTION �\ ' • f 2µ 1µ-DRAIN 4-OVERFLOW B'INFLUENT L STEEL TANK 1µ-DRAIN CONNECTION CONNECTION CONNECTION CONNECTION - 6 . t _. _._. �i .�v BIO-MODULE 2.0m ■ MODEL NO 622-052 622-101 622.154 _ C tlectivc mrdra web 11?': 4400' 7.900 13500 O:K^alp';+a nb! 14 500 22100 30900 iw'S'Ionalc ftb I 5.900 7 —.950 9 950 L ff- -- jl Motor no.sepowe•' S S 4: 13 rr� L _ 13" }A- f tang,-to Iflan,.dim 10.•W 15'-°r." 23-1i- —' -1 I l I I T wan I a 2 3 8 ODD 16000 24.000 32.000 I I 7'-10A' a o„L.eIs;GPDJ rORrvE ... —_--_ A _-- I __ . 6'EFFLUENT >f;y a`? t '. CONNECTION I 4' 4 ;: o. sr�.'.. -- 7.-2% 5 _- - -- - .— .. � - + .tai aria. t 2.-8Y.- WATER LEVEL -T _ _mil I 1B -� 1 • 2, 2"OVERFLOW 1'.4-ORAIN6"iNFI UENT 14" DRAIN CONNECTION CONNECTION CONNECTION CONNECTION . lI • I BIO CLARIFIERS 2.0m - /�3.2m MODEL NO. 642-1 642.2 641-1 j 611-2 WEIR D—.i A8 Ch ,'er to aci l 4%0' 1 .-0" 1 '-Q-i 4-0' V)- 1 B Cn..or comae lank 4'-O" 6'-O" 2'-6' a'-0" i C Flange in flange dim 11'-05,,." 20.-05: 9'-61:" 16'-01:' • Shipping 44 (lb I 3 500 5.000 5.700 7.200 Operating WI (lb I 9.950 17.900 23.000 39.600 2"SLUDGE 0 Flange to E sludge DISCHARGE discharge 2'-8%" 6'-flic i'-2;1" 2'-6h" E CONNECTION Clar.lrer area ill'I 35 70 56 5 113 Ctantier volume I9al l 490 080 1.445 2.890 .+ 3h' Chic), contact lank . 1 volume ilia,I 278 558 605 970 �{-7'' F 13' ?'•8' I G r.6 a'-11- F �" 5,1 I IL J 7'•1' 11'-W t r j K 2'.4'4• 1'•4' —� G L 4%3" a' M 2'-X- 3.-103C 18' ems_ -. N S'-9/G' . P 18' 2'-3' * mss_ O 2%731'=X,' 4'.7%-,...Ii" f 111 51+ —�I►-�—� R 2'-91":!4" C-13‘•=14' 1 h T4 I t 6' 9 I A _ B, Motor.'A hp.115 V.single phase.open drip-prool enclosure jIl C Other options available. 9ih 3 4 { /, , DRIVE H J �i+weowi r_i��s.1!i� n 1 O M T R ` i P T T i r s S rMZS ' ,s\ tV / K • �' INFLUENT EFFLUENT � f i l CONNECTION CONNECTION RECYCLE 1r4 DRAIN CONNECTION. CONNECTION EACH END alf 7 A. ^ B1O-MODULE SHAFTS - BIO-MODULE SHAFTS are sztppiied to be installed in con- Because 12-fool diameter media is available for this type of crete tankage.The BIO-MODULE SHAFT includes several installation,it can be applied to greater wastewater flows than stages of RIO-SURF media mounted on a horizontal shaft RIO-MODULE systems. along with a rotating bucket feed mechanism,shaft bearings. Operation is identical to a BIO-MODULE.unit. and drive system. E r A DRIVE SYSTEM L - r - -I I - 610-CLARIFIER fl SHAFT TANK I (Shown Dotted) _ I _ I. -1-, C � : FEED i_.�.a $ NOTE: TANK CONTOUR MAY BE CIRCULAR OR TRAPEZOIDAL BIO-MODULE SHAFT Information B1O-MODULE Media Shipping Operating Bucket Feed SHAFT Dimensions Surface Weight Weight Motor Capacity Model A B C D E Area,Ft? Lbs.t2) LbsS91 HP set gpdtSt 611-104 10'-8" 14'-4" 6'41" 6'-6" 4'-9" 28.000 8,300 16,000 3 31,000 611-154 15.-8" . 48,000 11.200 26,000 3 62,000 611-204 20'-8" II68,000 15,300 37,000 5 93,000 135.000 612-052 5'-8" 7'-4" 3'-6..A"3'-3L2" 3'-3" 4400°1 4.850 5.000 1/4 8,000 612-104 10'-8" ' " 7,900 5,950 7.000 1/2 16.000 612-154 15'-8" ' ' 13.500 7,300 10,500 3/4 24.000 32.000 (1)in 2 stages:all others 4 stages. (2)Includes shipping frame. (3)With attached biomass in dewatered tank. (4)230/460 V.3 phase.open drip-proof enclosure. (5)With 1,2,3.and 4 buckets.respectively. 8Pit x BIO-CLARIFIER SHAFTS BIO-CLARIFIER SHAFTS are supplied to be installed in eon- The figtue below shows the manner in which a BIO-MOI)ULE crete tankage. It includes the sludge scoop mechanism,shaft SHAFT is installed in concrete tankage along with a BIO- bearings.and drive system.Operation is identical to the CLARIFIER SHAFT.This system operates in conjunction with RIO-CLARIFIER. pretreatment and sludge solids disposal or storage facilities. Disinfection can be performed in facilities installed immediately A building should be erected around the system.Covers are adjacent to the final clarifier or in facilities separate from the available from Autotrol to serve this purpose. installation. CHLORINE 1 '_g^ CONTACT TANK 1 '-9 4-- F -(min.) (OPTIONAL) SLUDGE DISCHARGE BIO-MODULE SHAFT TANK p-j��1• G (Shown Dotted) R I ( DRIVE SYSTEM 1/1 EFFLUENT WEIR SCOOP CLARIFIER TANKr7 IiIIII!jf BIO-CLARIFIER SHALT Information BID. CLARIFIERDimensions Clarifier Clarifier Sludge Scoop SHAFT .. Overflow Volume Capacity Model ' F G Area,Ft! Gal. gpdill 631-1 5'-0" 14'-4" 72 2,450 590 631-2 10'-0" 14'-4" 143 4,900 1,180 • 632-1 5'-0" 7'-4" 35 490 590 632-2 10.-0" 7'-4" 70 980 1,180 (1)At 4 rph. Motor. 1/4 hp,230/460 V,3 phase, open drip-proof enclosure. Other options available.• FEED 111 L R , . • is 9,r • • BIO-M JLE AND BIO-MODULE SHAF. NFIGURATIONS The LSllouing are several suggested configurations in which to cess regardless of the pattern of raw wastewater Flrwe. Sept ic- employ RIO-SURF process equipment for package plant tank constmnion can be of steel or cnnnete,depending upon applications.Mille the configurations of flurries 6, 7,and 8 cost, soil conditions,and regitlatory agency Trzluit ements. shcw'RIO-MODULE units in steel tankage,they are also Selection of an appropriate septic tank retention time,when applicable in RIO-MODULE SHAFTS in concrete tankage. followed by 810-SURF process secondanr treatment. is done primarily on the basis of sludge digestion and storage capacity. Aerobic Pretreatment I Field testing has shown that a 12-hot,,retention time uill yield Several aerobic pretreatment alternatives can be utilized to about one year of continuorus operation lrinre renunal of sludge precede BIO-MODULE units and RIO-MODULE SHAFTS- I for ultimate disposal.On this basis,a 12-hour septic tank These include primary clarifiers,combined primary clarifier and retention time is recommended for most applications. sludge storage(Imhoff-tank)or ally of the recently developed During extended periods of little or no wastewater flow, RIO- fine-screening devices.The use of combined primary clarification SURF process effluent can be pumped to the septic tank for and sludge storage with a BIO-MODULE unit is shown in recirculation.This will provide sufficient organic man er to Figure 6.Secondary sludge from the BIO-MODULE is returned maintain an active aerobic biomass on the media until normal to the pretreatment system fur storage and digestion.Because wastewater ater flew is resumed.This practice is recommended in package plant applications often experience extreme flucma- I applications such as recreational areas where uasteuater lions in flow,it is often recommended that an aerated flow - treatment is needed only several days each week equalization step be utilized after pretreatment before entering the BIO-MODULE unit.This results in a higher treatment capac- Side-by-Side Configurations ity and permits a more economical design for the BIO-MODULE In the side-Iv-side configuration(Figure 71, gravity uaary ater units or BIO-MODULE SHAFTS and the subsequent clarifica- flow to the RIO-MODULE unit is utilized. Raw wastewater en- don and disinfection steps. ters the septic tank for primary treatment and rn'erflrnus into the - flow equalization tank.The flow equalization tank is connected to the lowest point of the R10-MODULE feed chamber.At the � beginning of a daily flow cycle,the wastewater level in the � _ ! equalization tank will be at its lowest point.As the Mu!cycle I i I progresses,the equalization tank will begin to fill:and the rising level in the 131O-MODULE feed chaniber will cause the - -' w* 4••+ N L Id�..'_ \t bucket feed mechanism to deliver wastewater at an increasing • 1 rate.At the end of the period of flow,wastewater in the - - j equalization tank and feed chamber will be at their highest - levels;and the Mwket pump will be pumping at its highest rate. During the balance of the daily flow cycle,where there is link .O.m.. r " or no raw waste flow,the level in the equalization tank will he 10,.......a..",r. r pumped down by the bucket pumps until the beginning of Lan;OrLSTPOTI another flow cycle when it is again at its lowest level.Operating woo SIORan in this manner,the RIO-SURF process experiences a cyclic wastewater flew pattern where the peak flow Is approximately 13 times the average regardless of the pattern of raw waste- water flow.water flow.In cases of extreme surges of wastewater which exceed the capacity of the equalization tank the excess can 6 BO-MODULE WITH PRIMARY CLARIFIER AND SLUDGE DIGESTION overflow from the feed chamber directly into the stages of media and receive hill secondary treatment. Septic Tank Pretreatment ) For the range of wastewater flows from 5.000 to 75,000 gpd, primary treatment and sludge handling can be accomplished simply and effectively with a septic tank A septic tank by itself .rye .or"o��µr is a crude means of wastewater treatment.However,in combi- "• . rt" r0 rE",x*w - nation with BIO-MODULE units or BIO-MODULE SHAFTS, - f it provides for a very simple total treatment system. e,,,,_,,. Two configurations of a treatment system with a BIO-MODULE --r_- - and septic tank are shown conceptually in Figures 7 and 8.For Oa LUERT �— r •� each of these configurations,the treatment system is con- v ------- tank _ `�stmcted in two parts—the septic tank and a flow equalization - e utr For low wastewater fl .these two tanks may be con- rained in a single tank For higher flows,they can be separate t x.00. tanks.The septic tank portion of the pretreatment system pro- OUT,6 WT.ZONE I vides for removal of settleable and floatable materials.It also "o"°'""'c`r provides for digestion and storage of secondary sludge solids. The flow equalization tank in conjunction with the feed chamber BIO-MODULE UNIT WITH SEPTIC TANK PRETREATMENT and bucket feed system of the BIO-MODULE unit provides a 7 relatively uniform flow of wastewater to the BIO-SURF pro- SIDE BY SIDE CONFIGURATION 10 4, • x Over-and-Under Configuration Comparison of Configurations The aver-and-under BIO-MODULE and septic tank configura- A check list of the key features of each configtnat ion is provided lion shown in Figure S operates in a fashion similar to that 1 to assist in selecting the appropriate configuration for a slwcific described for the side-by-side configuration.The major differ- package plant application. ence is the manner in which the wastewater is fed to the BIO-MODULE unit.A submersible pump of somewhat greater Side-by-Side BIO-MODULE capacity than average design flow is placed in the flow equali- zation tank It pumps at a constant rate into the BIO-MODULE I Configuration (Figure?). feed chamber.An adjustable overflow connection on the feed Flow range up to 90.000 gallons per day. I chamber is set at a Ic'`el where the buckets;ill pump the Gravity flow of uasieuater. average design flow into the RIO-SURF media sections.and the excess will overflow back into the equal izatinn tank During Insulation against cold weather. ta'rU is when wastewater flow is above average.the equalization I Can be completely underground. tank will fill and when flow is below aaerr.ae,the lank will Requires constmct ion of undergrxmd chamber to accept empty.In cases where extreme surges in flFlou•Fr'old exceed the RIO-MODULE unit.(This duplicates tankage and capacity of the equalization tank.a second submersible pump increases cost) is placed in the equalization tank This pump is activated by a high level control and pumps excess flow directly into the first Requires only a very simple cover. stage of media.In the over-and-under confi ji ration,effluent Requires pumping for effluent recycle,when desired. recycle(when used) returns by gravity to the septic tank Minimum slope of 5d"per foot must be maintained on - sludge line. Maximum capacity of flow equalization tank limited by .-.-"," available wastewater depth in BIO-MODULE feed chamber. Side-by-Side with BIO-MODULE SHAFT in y 41 ( 1 _ Concrete7ankage. _ Flow range up to 100,000 gpd. . i f f i J _ -r - •. _iii I Gravity flow of wastewater and sludge. ii "`" I Insulation against cold weather. w...,�Id 1 i �I �_ JI Jle-_ - Minimum slope must be maintained on sludge line. r] �r -'(—' Construction can be completely underground. I - - - f+�� A single concrete tank required for RIO-MODULE SHAFT. "'"°" "'"Tina( Requires only a simple cover. • Requires pumping for effluent recycle,when desired. -- 't- . ...,a.. / .o-.,R.,„ae Maximum capacity of flow equalization limited by available a,....,o."w u 04<mad Yw.ew.t wastewater depth in feed chamber of concrete tankage. 8 BIO.MODULE UNIT WITH SEPTIC TANK PRETREATMENT OVER AND UNDER CONFIGURATION Over-and-Under BIO-MODULE Configuration (Figure 8). Flow range up to 90.0(x)gpd. I Requires pumping of wastewater into BIO-MODULO- unit. BIO-MODULE sHAFT in Concrete Tankage I Requires const rud ion of building for 61O-MODULE unit. For wastewater flows beyond the range of a single BIO- Gravity return of secondary sludge and effluent recycle MODULE system.it is possible to use several BIO-MODULE (when desired)to septic tank. units in parallel.However,in these cases,it may be more economical to use one or more BIO-MODULE SHAF IS J Full capacity of flow equalization tank can be utilized. mounted in concrete tankage. When using RIO-MODULE SHAFTS in such applications,it is generally recommended that the side-by-side configuration be utilized.For this application,the bucket feed mechanism, RIO-SURF media,aid RIO-CLARIFIER SHAFT are installed in concrete tankage conforming to the shape and dimensions of the BIO-MODULE tankage. For applications where soil conditions do not permit excavation for installation of treatment equipment,a RIO-MODULE installation similar to that shown in Figure 7 can be operated with an above-ground septic tank Operation of the system would be similar to that for the side-by-side configuration with the exception that wastewater would have to be pumped into the septic tank It is also possible to operate a standard BIO IL - MODULE SHAFT in an alive-ground position simply by installing the concrete tankage above ground level. f 11 :F • July 27, 1979 Arix 2021 Clubhouse Dr. Greeley, Colorado E0631 Dear Sirs; The I-lilliken Fire Protection District approves the site location of the Alison Farm Development and will supply fire protection for it; but we would like to reserve complete approval for the project ,t;1 v: sec -thc plan for wr,ter lines and fire plug locations . Thank you. • Sincerely, Jerry Kilgore Fire Chief Milliken Fire Dept . Station #1 C.C . Weld Co. Planning Tom Honn I �n',1♦ 4 56) AUG1919 ° "' RECEIVED NWeill C v cer, %anoin Camowl1eissioa 4 y ��1/en,- • : coLey° •9 • tt Greeley 811 Fifteenth Street • Greeley, Colorado 80631 • 303/352-154a3, William A. Mitchell. Ed.D., Superintendent Ey R I !�(\ Don W Bennett F\ E,T` Director of Pupil Serum 352-1543, x 21 July 27, 1979 JUL 3 01979 Mr. Arthur F. Uhrich, L.S. ARIX, A Professional Corporation _ }, 2021 Clubhouse Drive w :_ Greeley, CO 80631 Dear Sir: I have reviewed your plat for the Allison Farm, Project No.79. If this area is completed according to the submitted plat, the 168 single family dwellings will produce the following number of children: Elementary K-5 66 Middle 6-7 28 Junior High 8-9 28 Senior High 10-12 38 • The elementary pupils are presently scheduled to attend Shaw- sheen. When the new building is completed at 47th Avenue and 20th Street, the pupils from this area will attend the new school. • The middle school pupils attend Brentwood. There is sufficient room at that location. The junior high school pupils attend John Evans junior high school. The district has sufficient space at John Evans. The senior high pupils will attend Greeley West from this area. Although West is reaching capacity enrollments, we are present- ly looking at methods of relieving the pressure. - If you wish any further assistance, please contact me. Sincerely, R- %.(/) Don Don W. Bennett (1,'"? do do Director of Pupil Services cjg VQ 41}1.• �yy X • Greeley, Colorado Date -/-- .5) - Weld County Planning Commission Centennial Center 915 10th Street Greeley, Colorado 80631 Dear Sirs, The Mountain Bell Company will provide telephone service to the 791[LA5o// ,—3'?A J DD/T/24/ — l'ieG<i c(:7- ZS / C-1:4/ O//2 A review of the subdivision plans relative to the design of the utility easements is in progress and our comments will be presented to the utility board representative. Yours truly, Engineer zn) .1 �1 6, /7? 80 6), eD- 38 6184>>>a rb ti JUL 1979 s ^ RECEIVED p Weld Couery Planelie Comoissloe qp/ eepe se pa fi • GREELEY GAS COMPANY July 6 , 1979 Weld County Planning Commission Centennial Center 915 10th Street Greeley, CO 80631 Dear Sirs : I have reviewed the preliminary plat of Allison Farm, Profect 791 Eng. 0112 . w z Greeley Gas Company has mains in this area and can serve a this subdivision subject to the Gas Attachment Program La filed with Public Utilities Commission effective Decem- M ber 23, 1973 . cc Greeley Gas Company will require additional utility ease- 0 ments as follows : Five feet (5 ' ) on each side of property line between Lots 1 & 4 , Lots 1 & 3 and Lots 1 & 2 , Block 4 , and five feet (5 ' ) on each side of property line between Lots 19 & 20 , Block 5 , and on the northeasterly side of property line of Lot 14 , Block 6 . 0 Very tr y ,Ours , 0 o �fG Ray outs a Asst. Manager Operations RF:ng 910 lib h6 A. 1��9 JUL 1979 RECEIVED z etc Weld Conti !Wig Couissiot . 1. 6 ; (/) 8�le9ZS- AV"• > LA, ,.�21a 3� 10 ta. l�� a 0- \g-19p v N cc J VI tidg tit-t i\3 a • Itonal'�° ,•� co aO oaL lionietight July 10, 1979 Weld County Planning Commission Weld County Planning Department 915 - 10th Street Room 310 Greeley, Colorado 80631 SUBJECT: ALLISON FARM, PROJECT NO. 79 1 ENG 0112 Gentlemen: This is to advise that. Home Light and Power Company is prepared to provide electrical utility service to that portion of subject project which lies within our certificated area. More specifically, we are prepared to provide electrical service for Lots 24 thru 32 in Block 1 and Lots 1 thru 3 in Block 2 and Lots 25 thru 48 in Block 3. Service of Lots 21 thru 24 in Block 3 and Lot 29 in Block 1 may be serviced by Home Light and Power Company depending on the physical location of the buildings. Our proposed electrical service will be primarily front lot line construction and we do not require any additional easements. If you require additional information, please advise. Sincerely, i 4 Richard H. Fennelly Manager of Operations RF/gs Enclosure f HOME LIGHT AND POWER COMPANY • P.O. BOX 8 • 810 NINTH STREET • GREELEY,COLORADO 80631 • TELEPHONE (303)353-1144 POUDRE VALLEY Poudre RURAL ELECTRIC ASSOCIATION Valley , P. O. BOX 1727 FORT COLLINS, COLORADO 80522 PHONE 226- 1234 July 10, 1979 ARIX JUL 12 1979 ARIX, A Professional Corporation 2021 Clubhouse Drive Greeley, Colorado 80631 Attention: Mr. Arthur F. Uhrich Dear Mr. Uhrich: Re: Allison Farm, Project No. 79 1 Eng. 0112 - Electric Service Poudre Valley Rural Electric Association, Inc. is ready, willing and able to provide you with electric service in those portions of your subdivision that are certificated to Poudre Valley by the Public Utilities Commission of the State of Colorado. The proposed development is to be located in Section 16 and Poudre Valley serves the West Half, of the Southeast Quarter, of the West Half, of the Northeast Quarter of Section 16. Any lot that lies outside this area would be served by Home Light and Power. I have enclosed a map indicating the boundary lines. I am sending a copy of your letter and plat to Home Light and Power and will set up a meeting to discuss those lots which are split by the boundary line. If you should have any questions in the mean time, please feel free to contact me. Sincerely, .,,..i . R Duane M. Ritchie Commercial Director \\12131415/6/ DMR/1 s (ID'�� U 7( Encl . �Fe� �9�9 v CO at. /V CC: Home Light and Power gd''�° e��°4,�w 0 /£o£6ZSl LZ�ti5 4 t • Union Pacific Land Resource Corporation 1416 Dodge Street Omaha , NE 68179 Pan American Petroleum Corporation a Champlin Petroleum Corporation coo Amoco Production Company Far West Land Company 550 Greeley National Bank Plaza Greeley, CO 80631 Margaret Marie Henneck 2543 West 15th Street Greeley, CO 80631 State of Colorado State Capitol .Annex 1375 Sherman Street Denver, CO 80203 ti' AUG 1979 T RECEIVED ' To weld tawny u�� Rartning Paeeissioe (1:i 4 MEMORANDUM MINERALS ONLY DESCRIPTION: The Sz of the NEq of Section 16 , Township 5 North , Range 66 West of the 6th P.M. , Weld County , Colorado, less 0 . 25 acre contained in Right-of-way no. 1141. MINERAL RESERVATIONS OF RECORD: The State of Colorado reserved all Minerals in the Patent recorded in Book 511, Page 456 , Weld County Records . OIL AND GAS LEASES OF RECORD: Except Oil and Gas Leases whose primary term have expired and Except State of Colorado Oil and Gas Leases unrecorded in the Office of the Weld County Clerk and Recorder. NONE ABSTRACTER' S NOTE: There are numerous assignments of State of Colorado Oil and Gas Leases which leases are not of record in the Office of the Weld County Clerk and Recorder. • r1222374�5c6 0 AUg 19)9 �� 13 Nell CooVE� aHannin gee 8 Con rsla� ti Except all tax sales and special assessments , if any. This Memorandum is not to be construed as an Abstract of Title, nor an opinion of title , nor a Policy of Title Insurance, and the liability of Transamerica Title Insurance Company is hereby limited to the amount of fee paid for this statement. Dated this 20th day of August 19'73 , at 7 :45 o ' clock A.M. TRANSAMERICA TITLE INSURANCE COMPAN)i BY o J � _ /� , „f fi Authorizes Signature MEMORANDUM MINER.7 "‘ ONLY DESCRIPTION: The SWa of Section 16 , Township 5 North , Range 66 West of the 6th P.M. , Weld County, Colorado, EXCEPT the SEq of the SW; of said Section, Township and Range. MINERAL RESERVATIONS OF RECORD: The State of Colorado reserved all Minerals in the Patent recorded in Book 1225 , Page 110 , Weld County Records . OIL AND GAS LEASES OF RECORD : Except Oil and Gas Leases whose primary term have expired and Except State of Colorado Oil and Gas Leases unrecorded in the Office of the Weld County Clerk and Recorder. NONE ABSTRACTER' S NOTE: There are numerous assignments of State of Colorado Oil and Gas Leases which leases are not of record in the Office of the Weld County Clerk and Recorder. • • ,0223N kir �O�cE/1gj9 74- ►et in %Jr o� p lit !6168 L9`, co Except all tax sales and special assessments , if any. This Memorandum is not to be construed as an Abstract of Title, nor an opinion of title , nor a Policy of Title Insurance, and the liability of Transamerica Title Insurance Company is hereby limited to the amount of fee paid for this statement. Dated this 20th day of August , 1979, at 7 :45 o' clock A .M. TRANSAMERICA TITLE INSURANCE COMPANY By 23 i ,re 2t:<; Autnorized Signature MEMORANDUM MINERALS ONLY DESCRIPTION; The W1/2 of the NWq of Section 16 , Township 5 North , Range 66 West of the 6th P.M. , Weld County, Colorado, exclusive of 2 . 7 acres enbraced in Right of Way Deed No. 1278 to the Board of County Commissioners of Weld County , Colorado. MINERAL RESERVATIONS OF RECORD: The State of Colorado reserved all minerals in the Patent recorded in Book 307, Page 101, Weld County Records . OIL AND GAS LEASES OF RECORD: Except Oil and Gas Leases whose primary term have expired and Except State of Colorado-Oil and Gas Leases unrecorded in the Office of the Weld County Clerk and Recorder. NONE ABSTRACTER' S NOTE: There are numerous assignments of State of Colorado Oil and Gas Leases which leases are not of record in the Office of the Weld County Clerk and Recorder. • • ell:\2223?d�� N. ffo in AUG 1979 t RECE.1 V cnn Ep a Aartnin o f [tomAirsion % Except all tax sales and special assessments , if any. This Memorandum is not to be construed as an Abstract of Title, nor an opinion of title , nor a Policy of Title Insurance, and the liability of Transamerica Title Insurance Company is hereby limited to the amount of fee paid for this statement. Dated this 20th day of . August , 1979 , at 7 :45 o' clock A.M. TRANSAMERICA TITLE INSURANCE COMPANY IIY of 6 �i �„ Aut hor ze gnature MEL`OcZANDU'd MINEk__3 ONLY DESCRIPTION: The E2 of the SE; of Section 9 , Township 5 North , Range 66 West of the 6th P.M. , Weld County, Colorado MINERAL RESERVATIONS OF RECORD : Union Pacific Railroad Company reserved "all coal and other minerals" by virtue of Deed recorded in Book 217 , Page 48, Weld County Records . This interest was conveyed to Union Pacific Land Resources Corporation by virtue of Quit Claim Recorded in Book 644 under Reception No. 1656712 , Weld County Records. OIL AND GAS LEASES OF RECORD: Oil and Gas Lease from Union Pacific Railroad Company to Pan American Petroleum Corporation dated January 8, 1971 and recorded February 16 , 1971 in Book 640 as Reception No. 1562223, Weld County Records . Primary term is five years . Assignment and Conveyance of Oil and Gas Rights Committed to Leases , Licenses and Other Agreements and Located in Weld County, Colorado from Union Pacific Railroad Company to Champlin Petroleum Company, dated as of March31, 1971 and recorded in Book 644 under Reception No. 1565709 , Weld County Records . • �lob It 223a Cj �5?6 R AUG 1979 'in ID RECEIVED Weld Connry �� %arming Commission (To6 S U `�4 Except all tax sales and special assessments , if any. This Memorandum is not to be construed as an Abstract of Title, nor an opinion of title, nor a Policy of Title Insurance, and the liability of Transamerica Title Insurance Company is hereby limited to the amount of fee paid for this statement. • • Dated this 17th day of . August , 1979, at 7 :45 o'clock A .M. TRANSAMERICA TITLE INSURANCE COPSA$ By r{t -.2 T7 7f,2,47., Authorized Signature MEMORANDUM MINE ,;,S ONLY DESCRIPTION: The NWa of Section 15 , Township 5 North , Range 66 West of the 6th P.M. , Weld County, Colorado. MINERAL RESERVATIONS OF RECORD: Union Pacific Railroad Company reserved "all oil, coal and other minerals within or underlying said land"by Deed recorded in Book 417, Page 180 , Weld County Re-ords . This interest was conveyed to Union Pacific Land Resources Corporation by virtue of Quitclaim Deed recorded in Book 644 under Reception No. 1656712 , Weld County Records. OIL AND GAS LEASES OF RECORD; Oil and Gas Lease from Union Pacific Railroad Company to Pan American Petrolrum Corporation dated January 8, 1971 and recorded Feburay 16 , 1971 in Book 640 as Reception No. 1562223 , Weld County Records . Primary term is five years. Assignment and Conveyance of Oil and Gas Rights Committed to Leases , Licenses and Other Agreements and Located inWeld County , Colorado from Union Pacific Railroad Company to Champlin Petroleum Company, dated as of March 31, 1971 and recorded in Book 644 under Reception No. 1565709 , Weld County Records . NOTE: There is of record Surface Owner' s Agreement recorded in Book 1504 , Page 160 , Weld County Records . (See attached copy) �2�22232��S� �REAtiG 1gj9 cEIV Lo Ep • • Ptak _� �• �nnnin �°u 8 CC 7tisrinn V� /0/ I. 8 .g c'"� Except all tax sales and special assessments , if any. This Memorandum is not to be construed as an Abstract of Title, nor an opinio of title , nor a Policy of Title Insurance, and the liability of Transamerica Title Insurance Company is hereby limited to the amount of fee paid for this statement. Dated this 17th day of August , 1979 , at 7 :45 o' clock A .M . TRANSAMERICA TITLE INSURANCE COMPANY BY of Authorized Signature UE?`ORANDIJM DESCRIPTION: The Ez of the SW; and. the Wz of the SE; of Section 9 , Township 5 North, Range 66 West of the 6th P.M. , Weld County, Colorado- Except 3. 75 acres in the NWk of the SE; as conveyed by instrument recorded in Book 479 page 261 , Weld County, Colorado Records . Except the Steele and Phillips Reservoir and Except Right of Way Easement as conveyed by instrument recorded in Book 850 as Reception No. 1772155 , Weld County Records . GRANTEES IN LAST CONVEYANCE OF RECORD TRANSFERRING TITLE: NEAR WEST LAND COMPANY, a partnership, acquired from Century Corp. , a Colorado Corporation , by Warranty Deed dated April 28 , 1978 , recorded May 4 , 1978 , in Book 831 as Reception No. 1752553, Weld County Records ENCUMBRANCES OF RECORD: • Deed of Trust from Far West Land Company, a Co-partnership to the Public Trustee of Weld County, Colorado, for the use of Margaret M. Henneck, to secure $160 , 000 . 00 , dated January 2 , 1973, recorded January 3, 1973, in Book 683 as Reception No. 1604716 , Weld County Records . Deed of Trust from Century Corp. , to the Public Trustee of Weld County, Colorado, for the use of Far West Land Company; a Partner- ship, to secure $200 , 000 . 00 , dated March 31 , 1978, recorded April 25, 1978 , in Book 829 as Reception No. 1751490 , Weld County Record MINERAL RESERVATIONS AND CONVEYANCES OF RECORD: Contained in the Patents from the United States , recorded in Book 153, Pages 40 and 463, Weld County Records , is the following: "Excluding and excepting from the transfer by these presents All Mineral Lands, should any such be found to exist in the tracts described in the foregoing, but this exclusion and exceptio: according to the terms of the Statute shall not be construed to include Coal and Iron Lands . " The Union Pacific Railroad Company reserved all Coal by virtue of instruments recorded in Book 121 page 174 and in Book 149 page 237 Weld County Records . This interest was conveyed to Union Pacific Land Resources Corporation by virtue of instrument recorded April 14, 1971 , in Book 644 as Reception No. 1565712, Weld County Record: Contained in the Warranty Deed from Margaret Marie Henneck dated January 2 , 1973 , recorded January 3, 1973, in Book 683 as Reception No. 1604715, and re-recorded February 6 , 1973 , in Book 685 as Reception No. 1606749 , Weld County Records, is the followinc "reserving jnto Grantor an undivided one-half interest in oil , gas and other minerals provided that such reservation does not include any right to lease the described premises but such reserva- tion shall entitle Grantor to a proportionate share of all royalty and lease rental payments: " Century Corp. , a Colorado Corporation conveyed a 1/4 interest in and to all of the oil, gas and other minerals to Far West Land Company, a partnership, by Mineral Deed dated March 31 , 1978, recorded May 4, 1978, in Book 831 as Reception No. 1752552 , Weld County Records. OIL GAS LEASES OF RECORD: 1.1425Z674,� Oil and Gas and Mineral Lease from Far West Land Company, a c Partnership to Amoco Production Company, dated August 16 , 1976, �c 1(31 �� recorded 1976 , in Book 782 as 1976oin1Boo149 &\� H784 as Reception No. 1706163 , Weld County Records , for a primary w%\00 \Ss. 1 'term of three years . Ratification of said Lease by Margaret M. a�a\�gtcfl Henneck recorded February 23, 1977, in Book 790 as Reception No. a O) 1712015, Weld County Records . Exc 1 $(2) tax sales and special assessments , if any. This Memorandum is not to be construed as an Abstract of Title, nor an opinion of title , nor a Policy of Title Insurance, and the liability of Transamerica Title Insurance Company is hereby limited to the amount of fee paid for this statement. Dated this 17th day of A„g„ct , 1979 , at 7 :45 o'clock A .M. TRANSAMERICA TITLE INSURANCE COMPAify �% By )t. ,<1?Pc; Authorized Signature xt;, REFERRAL LIST cn :-7 Z 4. APPLICANT Sears and Company, Pealtors C a CASE if E-163 : 79 : 8 _ z a R.r7nR;LS SENT OUT SI,lv moo , 1979 _ o REF RR=_LS TO BE krC IC=J BY = '2 �a79_ H Ul Z U U 0 1=1 H Fa -7 Gy Oa o c> X jJL 2 7 1973 County Attorney ,' AUG 2 2 131) County Health it/ Xp, x Y, AUG 2 0 1979 County Engineer City of Greeley Planning Commission c/o John Given P.C. 8/14/79 Greeley Planning Department - .- - Civic Center, Complex " 919 7th Street Greeley, Colorado 80631 :4-C,,A.-12-1,6t iC`1Yi7k' �4i - t -1- r.• • , 3 F. , ' ,F � y ", - Colorado Geological Survey `l X AUG 2 2 1919 3 Dave Shelton . 1 1313 Sherman Street {' - Room 703 Denver, Colorado 80203 Soil Conservation Service .,r-;r AUG22 1979 ' = 4302 west 9th Street Road r X :. Greeley, Colorado 80631 , Jerry Kiefer ,r - 2120 Fairway Lane Greeley, , Colorado 80631 . , ; :r y ; Bill Earley . <r Colorado Department of Health . ' - "r> ₹ }. p:, 103 West Mountain Suite #7 F f Fort Collins, Colorado 80521 Paul Bisel 1 School District 46 _ '~" x JUL 3 0 1979 811 15th street Greeley, Colorado 80631 - Milliken Fire Protection District _ AUG 14 1979 Attention: Bob Onorato, Secretary ST: 1 "ry P.O. Box 41 Milliken, Colorado 80543 r �E I .' • YS t - t t 4b 7 1 ' I - gr .. . tt ._ Sill __ a -a _ tt.A + `y A ,k ..." �q !:4,,,.. A a4t+- - ,� s ry : �L _, ."�+ tit �_�__ GREELEY CIVIC CENTER GREELEY. COLORADO 80631 PHONE i 303i 353-6123 August 30 , 1979 Chuck Cunli£fe Weld Department of Planning Services 915 Tenth Street Greeley, CO 80631 Dear Chuck : Re: Preliminary Plat for Allison Farms Subdivision At ite meeting on August 28 , 1979 , the Greeley Planning Commission reviewed the preliminary plat for Allison Farms Subdivision and recommended approval of the subdivision conditioned upon the develop- ment meeting City standards . Specifically, the Planning Commission referred to provision of curb , gutter, and sidewalk. It was also noted that the preliminary plat : 1) should show dedication of 20 feet for arterial street right- of-way along 20th Street and S9th Avenue ; 2) with the provision of 20 feet of additional right-of-way, lots along 20th Street and S9th Avenue must also meet the 150 foot lot depth for lots backing onto an arterial street ; 3) all unidentified parcels should be identified as outlots and the proposed uses indicated; 4) if the large outlot located along 20th Street and the northwest corner of the subdivision is to be set aside as a public park, then the City requests that additional access be provided to 20th Street Road on the south by elimination of Lots 1 , 2 , 3 F, 4 in Block 7 ; 5) 20th Street Road is not aligned with Fairway Lane located on the east side of 59th Avenue . "A COMMUNITY OF PROGRESS" • Chuck Cunliffe August 30 , 1979 Page 2 If you have any questions , please feel free to contact me. The Commission appreciates the opportunity to comment on development in the County. Sincere y,Le"-____ , /1-1,..,' Jphn Given Current Planner JG :ka ��C.t67.1287 3/ wCV cF4� in c cn gaA4i!/p�oll'y Fp V i�' o eve .7 cO cb (2'A`Sl PI E12\`�� West Greeley Soil Conservation District P-0. Box 86 - Greeley, Colorado 80632 August 21, 1979 Mr. Gary Z. Fortner, Director Weld County Planning Commission Weld County Centennial Canter 915 10th Street Greeley, Colorado 80631 RE: Sears and Company Realtors, Preliminary Plan-Allison Farm Subdivision The Board of Supervisors has reviewed the above request and we are in agreement with review comments prepared for us by the USDA Soil Conservation Service. Those comments are attached and reflect the District' s recommendations. Sincerely, ✓ Arthur V. Briggs, Secretary West Greeley Soil Conservation District AB:jb cP cc ,61..t. " l4��Ot d Lc--3c;44 CONSERVATION - DEVELOPMENT - SELF-GOVERNMENT United States Soil gap, Department of Conservation Agriculture Service 4302 W. 9th St. Road, Greeley, CO. 80631 August 22, 1979 Milton aum artner, President West Greeley Soil Conservation District P. O./Box 86 Creel r'_ orado 80632 The following comments are in regard to the request to review the Preliminary Plan - Allison Farm Subdivision, to be located in a portion of the NlNEs and the EzNW4 of Section 16, Twp. 5N, Range 66W, Weld County, Colorado. Soil Suitability for Planned Land Uses: Fifteen percent of the subdivision area is made up of two soils which have severe limitations for the development of septic tank filter fields. One soil is limited due to shallow depth to sandstone, and the other is limited due to wetness and flooding potential. (Please reference comments prepared for the West Greeley SCD on August 14, 1979 attached to zoning request review comments). In the section "Ground Water" in the Subsoil Investigation, it is mentioned that peripheral drains should be placed on building sites with basements during construction to discharge water to water main trenches. I feel this method would adequately lower and stabilize ground water if the water main trenches are graded to an outlet point which will allow for ground water discharge. If the mains are not graded to an outlet, then during periods of high water the water main trenches and peripheral drains will not func- tion and ground water will not dissipate rapidly enough to prevent founda- tion damage and seepage into walls. I would recommend a closed conduit subsurface drain system be designed and installed prior to construction. The system could be designed to intercept ground water as well as collect and channel water from individual peripheral drains. Adequacy of Planned Drainage System: The 60' roadway typical section as shown by the plan indicates the roadside channels will carry 30 CFS. Water flows in designed channels on slopes greater than 0.57 will exceed the velocity (1.5 ft./sec.) that bare earthen channels can withstand without erosion. With proper vegetation, channel velocities can be increased to 2.5 to 3._ feet per second. Even with vege- tative cover, the presently designed charnel flow velocities will be exceeded on grades in excess of three percent. It is recommended that roadways be graded to remain under a three percent slope to prevent erosion potential. -• Page 2 - Review, Preliminary Plan - Allison Farm Subdivision The Q100 values as calculated for the 100 year runoff are consistently lower than those I calculated using the Soil Conservation Service method of determining runoff. Due to these significant differences, a check of these figures should be made prior to the final plat. The plans do not show how the irrigation ditch will be routed through the property to insure there is no interruption of water service for properties north of the proposed subdivision. All other items in this preliminary plan seem to be in order. If there are any questions, please contact me. Sincerely, ç ald D. Miller District Conservationist Greeley Field Office c: Weld County Planning Commission i RDM:jb S . a ttil\ O JOHN W. BOLD RICHARD D. LAMM *1. 475-F,* Director GOVERNOR <'�s:FjL 1g76 COLORADO GEOLOGICAL SURVEY DEPARTMENT OF NATURAL RESOURCES 715 STATE CENTENNIAL BUILDING -1313 SHERMAN STREET DENVER,COLOR ADO 80203 PHONE (303) 839-2611 August 20, 1979 Weld County Planning Department 915 10th Street Greeley, CO 80631 Department Members: RE: CASE NO. 6-163:79:8, ALLISON FARM We have reviewed the preliminary plat and supporting documents for the proposed Allison Farm Subdivision. The Subsoil Investigation Report by Arix Corporation (Project No. 79-1-ENG-0112, February 23, 1979) provides a good description and evaluation of those geologic conditions that will affect the proposed development of this site. We are particularly concerned about the groundwater levels encountered in February, 1979. These levels ranged in depth of from 5-14 ft, and they are likely to be higher during the spring and summer months as lawn and garden irrigation commences. If the subdrain system proposed by Arix (p. 2) malfunctions at any point in the system, basements could become flooded and untreated effluent could intercept the groundwater table. Therefore, we recommend that qualified personnel closely supervise the installation of the subdrain system to assure positive drainage and the long-term permeability of the gravel network. In all phases of earthwork on this site, the recommendations of Arix personnel should be closely observed. If these recommendations are followed, we have no objection to approval of the preliminary plat. Sinc rely, 9TH t --ix- ames N. Price Engineering Geologist 1oi0?lzzz,��q 4. , JNP/ba �c AUG 1979 N`; cc: Land Use Commission RECEIVED t Weld County Manning Conaissioe w 0 L GEOLOGY 5q STORY OF THE PAST . . . KEY TO THE FUTURE BOARD OF HEALTH • Weld County Health Department David Werkin5, DDS, Greeley William Slick, Roggen 1516 HOSPITAL ROAD Fran Christensen, Eaton Charles W. Juels, ND, MPH Director GREELEY, COLORADO 80631 A.M. Dominguez, Jr., eD, Greeley Annette M. Lopez, Greeley (303)353-0540 Herschel Phelps, Jr. MD, Greeley Kathleen Shaughnessy, PHN, Ault Arthur G. Watson, Platteville John M. Wheeler, Greeley August 16, 1979 Weld Co. Planning and Services Centennial Complex Greeley, Colo. 80631 TO WHOM IT MAY CONCERN: The application for the Preliminary Plan-Allison Farm Subdivision has been reviewed by our staff and the following comments are submitted; 1. Our greatest concern is with the sewage system proposed for this subdivision. a. There is insufficient data on the proposed mini-system (for use in the high density area) to properly evaluate its usage. Also, there is no indication given by the developer as to number of persons or sewage gallonage figures which would be loading to the mini-system. Also, no information is given as to mini-system discharge and site of this dis- charge. b. High Groundwater in portions of the subdivision could pose a problem for installation of conventional septic systems. Alternative systems would be required to be designed by a Colorado Registered Professional Engineer with plans submitted to and approved by the Weld County Board of Health. By engineering data supplied in the application, groundwater levels were noted to be, in all probability, at their lowest point due to the fact that borings being made during the winter. Therefore, our staff anticipates that a higher ground- water table would be seen in other times of the year. Higher groundwater tables would cause further problems. Perching of groundwater may occur because bedrock depths are found to be fairly shallow in the proposed area. Due to this condition, a large concentration of conventional septic systems developed in a relatively small area (168 lots on 153 acres) may cause septic effluents to become perched and area groundwater to become readily contaminated. Also, proposed subdivision plans call for drainage pipe to be placed around homes to protect basements from flooding. This might help the homes, but would only aggrevate conditions in leachfields. ti f Page 2 Planning Services ugust 16, 1979 In addition, if conventional septic systems were disallowed (due to groundwater table shallow depth) , other designs such as evapotranspiration (E-T) systems would be required. These types of systems require a larger land area for installation, something home owners with small lots may not want. Therefore, for these reasons, we recommend against the proposed sewage systems for this subdivision. c. Our division recommends against development of a storm retention pond in a recreation vehicle parking lot. 2. Any development greater than 25 acres is required to obtain an Emission Permit from the Colorado Air Quality Control Division, 4210 E. 11th Avenue, Denver, CO 80220 prior to any excavation, land-grading, or road construction. If you have any questions, please do not hesitate to contact this office. Sincerely, 'VW 411) n G. Hall, M.P.H. , Director nvironmental Health Services JGH:pp 0 • keep O p`• r®C'9,: cal co O047rr10j O� w 6"c99SVC3 4. tt,rig To Chuck Cluiliffe Date August 17, 1979 iEs i COLORADO From Drew Scheltinga, Engineering Manager subject: Allison Farm Preliminary Plan The Engineering Department has reviewed the submittal and has the following comments: 1. Irrigation ditches and owners should be shown in accordance with Section 5-1B(16) . Relocation of ditches must be appruved by their owners. 2. Common areas should be indicated in accordance with Section 5-1B(21) . 3. The "Soils Investigation" indicated ground water problems exist and suggest a subdrain system is necessary. This problem should be addressed. Cost estimates for this system should be included in the "Sununary Statements". 4. The drainage report indicates the West Basin retention pond would release the 100 year storm for the drainage above the pruposed development. I do not think this should be the case. It is to complicated a problem to explain in this memo. The applicant's engineer should contact this office to resolve the problem. 5. Daentieth (20th) Slieet Road as it intersects 59th Avenue should line up with Fairway Lane on the east side of 59th Avenue. Ctiw�l� Drew L. Scheltinga Engineering Manager DLS:sar a EG wed tas. toe tvOla :.. X JERRY R. CREWS. M.D. MEDICAL NEUROLOGY. ENCEPHALOGRAPHY EARL C. HUT.C5-IINS. M.D. AND ELECTROMYOGRAPHY NEUROLOGY CLINIC OF NORTHERN COLORADO 2000 16TH STREET GREELEY. COLORADO 80631 TELEPHONE 356-0260 August 20, 1979 Department of Planning and Zoning Centennial Center 915 - 10th Street Greeley, Colorado 80631 RE: Allison Farms Subdivision Dear Sir : I am writing to express my opposition to the proposed re- zoning for the Allison Farms Subdivision. I have studied the plat maps , traffic pattern flow, engineering reports, and the County Department of Health guide- lines and standards for septic tank systems . I find the proposed redevelopment is deficient inmost of the areas above. There is not an adequate plan for the movement of traffic in and out of the subdivision. I do not feel that using 59th and 24th Street presents a viable option for traffic flow pattern. Instead, essentially all traffic into this proposed subdivision should be channeled through 20th Street and provisions made along 20th Street for handling a large traffic flow. Fifty- ninth Ridge south from 20th is also an inadequate street at present to handle the proposed traffic flow. The intersection of 59th Ridge and 24th Street proposes a definite traffic hazard unless the street would be increased to four lanes and traffic signals established at that intersection. Also, traffic signals would need to be installed at highway 34 Bypass and 65th Avenue. The proposed density of this development is excessive when considering that each residence will be on a septic tank system. There is a high level of ground water and also fairly shallow level for bed rock, which makes septic tank drainage very un- likely to be efficient . There is also a possibility that septic tank drainage could contaminate basements of adjacent residences . The state and county guidelines for septic tank requirements are not met by this proposed subdivision. It would be marginal at best to think that septic tank drainage would be effective in this area. • • RE: Allison Farms Subdivision Page 2 August 20, 1979 The relatively high level of ground water would present difficulties in home construction. It would seem likely to me that homeowners might have problems with water in their base- ments. This is an aggravating problem should it occur . Fundamentally however, I am apposed to this resulting because I do not feel it presents a quality type of development for Greeley and Weld County. Thank you for your consideration. Si erely yours, Ji y R.' Crews, M.D. JRC: sm DZI2223 0. ^o AUG 1919 rea slaty soco Cr) 116 DOW C:4 !0 L95 �Il. 6491 West 24th Street Greeley, Colorado 80631 August 15, 1979 Weld County Planning Commission 915 10th Street Greeley, Colorado 80631 Dear Commissioners: We are Westridge landowners responding to the notification of the rezoning request by Sears Realtors of Allison Farms. Our lot, number 31, is on 24th Street adjacent to the proposed zone change. We feel that any change in zoning, other than to greenbelt or very low density (estate), would seriously deny the lifestyle for which we moved into this area, that being a quiet, peaceful country atmosphere that is semi-private, relatively safe and free for our children and ourselves. John Givan and the city planning staff have expressed to us that the proposed site should be developed after the city sewer passes through the property, and then with a very much higher density, comparable to the Bittersweet Subdivision. This does not follow the guidelines set down in the Greeley Comprehensive Plan in reference to building on lands adjacent to existing estate developments. "The Plan does propose that existing estate developments be given appropriate consideration when adjacent lands are developed. Care should be taken to assure compatibility of land usage by any of the following means: 1. Gradual reduction of lot size and/or increase in density as distance increases from the estate development. 1 2. Separation by public or private open space." 1. Greeley Comprehensive Plan, p.35-36. „x (2) The minimum lot size in Westridge is two and a half acres. We believe that a gradual reduction in lot size to one acre, and then on down, would be desireable for adjoining developments. A..very major concern of ours deals with the future of 24th Street. In the Greeley Comprehensive Plan, the following goal is stated: "1. Streets and highways shall be developed to serve future growing transportation needs, however, they shall not predominate the com- munity environment. Land developments shall be geared to meet the needs of the pedestrian, with the automotive concerns being secon_ dary."2 Any new development in the land section in which we live will pose traffic problems on 24th Street, which is designated as a "collector street." The definition of collector street is as follows in the Greeley Comprehensive Plan: "Unlike the categories of streets mentioned above, the collector street is generally not a through street. It collects traffic from within the neighborhood areas and routes the traffic to arterial streets. The design of the collector should be such that through traffic is discouraged. This will tend to keep traffic volumes at a low level, reducing to a similarly low level the quantity of ad- jacent land use conflicts." "Unlike the past policy of forcing the collectors into a grid system, the Plan proposes that collectors be considerably set off the half- mile section line in an irregular fashion. The collector is then located to serve the needs of the neighborhood--not to severthe neighborhood, as is the case under present practices." Please refer to the map on page 101 showing the desireable off-set collectors, which do not cross arterial streets, and then please refer to the map on page 106, which shows the future 24th Street. Note that 24th Street cuts across 59th Avenue, the only major north-south arterial west of 35th Avenue. This intersection is just below the crest of a hill 2. Greeley Comprehensive Plan, page 104, Goals. 3. Greeley Comprehensive Plan, page 107-108, Collector Streets, 4-. (3) on 59th Avenue, and 24th Street has a curving hill right before the approach. It is a dangerous intersection now; it could become very dangerous with a higher volume of traffic. Notice also that 24th Street extends all the way from 71st Street to almost 47th Street. This makes for one heck of a long "drag, " double meaning intended: Its proposed length is approximately two miles long. We submit to you that 24th Street future plans donot conform to the intent of the Comprehensive Plan, and that the street design should be changed, such that new neighborhoods have their own collector streets, and not cut through ours. Westridge is already severed by 59th Avenue. Must we be severed again by 24th Street? Please give consideration to a sol- ution to this problem soon. If the AllisonFarm property must be developed, we would certainly back the estate zoning proposed by Sears Realtors. We cannot support anything denser. It seems to us that the City of Greeley Planning Staff (esp. John Givan) is not responsive to the people 's wishes and rights to a choice and freedom of individual lifestyle, and that they themselves are encouraging urban sprawl by not filling in open building spaces that now exist within their present boundaries. Thank you for your time, patience and consideration. Sincerely yours, AUG 1919 CJ G REGE�vED sue: August 15, 1979 Dear Commissioner; In reference to the prcposed zone change from "A" agricultural zone district to "E" estate zone district with a unit development and preliminary plan designated Allison Farm Subdivision, I wish to convey my adament opposition to such a zone change. Let me first discuss my personal reasons for disapproval: (1) We originally purchased Lot 35, 4th filing Westridge, for the purpose of build- ing our own home in a semi-rural setting. After two years of constructing our "dream home" by ourselves, we are now nearing the completion of a 15 year longing for a piece of land and peace and quiet. (2) As lovers of the equine s;=-4s we enjoy the latitude which we now possess to exercise our horses relatively uninhibited by residential crowding. (3) A copious amount of perspiration, numerous blisters and smashed thumbs have given us title to the right to defend the life style which we are now only beginning to enjoy. (4) We are not gregarious by nature and do not desire more adjacent neighbors. (5) We are opposed to annexation by the city. I realize that we are only two souls and are insignificant in the planning for the masses, but we divorce ourselves from the concept that America is a "nation of sheep" and refuse to follow the dictates of mammon. We do not hold in high status the increase in property values but rather prefer the pheasent call, the rustle of corn leaves and fresh air. You may now say "they're right, they are only two votes" but please, we ask you to consider: (1) The immense drain on the city water system as near acre size lots attempt to keep their place green. (2) The water table in much of the proposed plat is high and regardless of what the engineers for 4. • 1 • Sears and Co. relate, proper septic systems along our northwestern border will have to be elevated close to or above present ground level . Mr. Doug Sears testified on August 14, 1979 to the city planning commission that leach fields in the surrounding area had requirements of 800 sq. ft. or less - our seepage bed was required to be 1040 sq. ft. minimum (permit4 210 Weld County Health Dept. ). Also not mentioned was the fact that some West- ridge homeowners have been required to re-dig their leach fields, specifically lots 30,36,39,26, and 27. (3) The Land Use Bill which prevented us from living as "rural" as we really wanted to, prohibits residences on less than • 35 acres without rezoning from Agriculture. Thus there is a demand for acreage in the two to five acre lot sizes. Has this been considered? Lots of the size proposed in the Allison Farms Subdivision are incongrous with adjacent residences. Even the Greeley Comprehensive Plan recognizes the demand for acre size lots or more. The Land Use Bill was intended to prevent the loss of agricultural land. The Westridge development utilized land unsuitable for farming, whereas the Allison Farms Subdivision will consume a vast amount of prime agricultural land. Alternatives are available. (4) Should preference be given to unknown persons who may by all likelihood come from other counties and states, rather than to those who now reside here? (5) On Page 35 of the Greeley Comprehensive Plan we find the statement that "existing estate developments be given appropriate consideration when adja— cent lands are developed". (6) Although the issue of 24th St. may be con- . sidered another item, it is of much importance as to whether any residential growth can be tolerated west of Westridge. Once again, we notice the Greeley Comprehensive Plan setting forth guidelines and note in particular that "collector" streets are not to be through, nor are they to "sever the r f neighborhood". The present plan is contrary to both of these philosophies. Expansion of 24th St. would require a stop light at 59th Ave. This would not alleviate the dangerous situation existing due to the hill between Lots 30 and 53. The curve adjacent to Lot 46 is also bound to take its toll- it's only a matter of time and traffic density. (7) The Colorado-Wyoming Gas relief station at the corner of 59th Ave. and 20th St. has possibly recieved less consideration than it deserves. We understand that it may be hydrogen sulfide that is used to give that "desired" obnoxious odor. If so, the question is then raised, "How safe is it for chronic inhalation?" We know that one part of H2S in 200 parts of air can be lethal. But what about the long term intake of even minute doses? Has the study of the carcinogenic effect of H,S been undertaken? Is it documented? The insidious effects of carcinogens have much too often delayed their discovery at the expense of untold thousands of lives. Many irritants that were considered harmlevs a decade ago are now known to be carcinogens. Hydrogen sulfide is de£inately an irritant! If you decide to allow development in this area, can you with a clear conscience guarantee that the hundreds of people moving in will not suffer? : We ask that you give very serious thought to this proposed development known as the Allison Farm Subdivision. With trust in the "system", I thank you. • v AUG 1979 ra C. RECEIVED ti Dick Clifton Weld Coutty 2205 64th Ave. Plannitg Cenission Greeley, Colo. 80631 353-5633 ‘95�s2i • covr CO £UUNi� [OMM AIDAKS cs2 227,E?q�s� 919 N DEPARTMENT OF PLANNING AND ZONINGumPV6 �J�O �, WELD COUNTY c AGE Not- .Ox =' 915 10th STREET wt vo\u�°e `/ GREELEY, COLORADO 80631 l atot IN VIEW OF THE TABLING OF THE ALLISON FARMS AND HIGHLAND PARK WEST 6 g '� � REQUESTS FOR REZONING DURING THE AUGUST 14 MEETING OF THE CI-MISSION, AND IN VIEW OF THE SUBSEQUENT STUDY SESSION SCHEDULED FOR AUGUST 21, ITtPPEARS DESIRABLE TO RESTATE IN WRITING THE REQUEST MADE OF THE CITY PLANNING COMMISSION BY 'THE.WEST RIDGE PROPERTY OWNERS, AS WELL AS THE RATIONALE FOR THIS REQUEST. THE REQUEST AND THE RATIONALE FOLLOW. IT IS REQUESTED THAT THE CITY PLANNING COMMISSION RECOMEND TO THE BOARD OF COUNTY COMMISSIONERS THAT 24th STREET BE DESIGNED TO REACH A DEAD END EAST OF 59thiWENUE WHERE 24th STREET CURRENTLY DEAD ENDS, AND THAT 24th STREET BE DESIGNED AS A DEAD END WEST OF 59th AT LOT 31, WESTRIDGE FOURTH FILING, OR AT LOT 32 ALLISON FARMS SUBDIVISION, SECTION 4, WITH ACCESS TO WESTRIDGE FIFTH FILING ACHIEVED THROUGH THE ALLISON FARMS SUBDIVISION IF 24th STREET IS DEAD-ENDED AT LOT 31, OR THROUGH 24th ST. IF DEAD-ENDED AT LOT 32, ALLISON FARMS SUBDIVISION. THE RATIONALE FOR THE ABOVE APPEAR TO BE COMPELLING: 1. THE INTERSECTION OF 24th ST. AND 59th AVE. IS ALREADY HAZARDOUS. THE HAZARDS ARE UNALTERABLE; 59th SOUTH APPROACHES 24th WITH A BLIND HILL AT THE INTERSECTION. TO THE WEST, THE INTERSECTION INCLUDES A HILL, A CURVE, AND AN INTERSECTING STREET, AS WELL AS TWO PRIVATE DRIVEWAYS, ALL WITHIN :DANGEROUS PROXIMITY OF THE INTERSECTION. TO THE EAST, 24th STREET INCLUDES A CURVE AT THE INTERSECTION. SINCE 59th AVENUE IS ALREADY A MAJOR ARTERY, THE PROBLEM WOULD BE EXACERBATED ACUTELY IF 24th ST. CARRIED SUBSTANTIALLY MORE TRAFFIC THAN IT CURRENTLY CARRIES. 2. WESTRIDGE WAS DESIGNED TO INCLUDE ADHERENCE TO COVENANTS STIP- ULATING BRIDLE PATHS BETWEEN AND AMONG PROPERTIES. THE COMMUNITY, BY ITS VERY NATURE, IS CHILD AND ANIMAL ORIENTED. THE DESIGNATING OF 24th ST. AS ANYTHING OTHER THAN A MINIMAL TRAFFIC STREET--I.E. , LOCAL TRAFFIC ONLY--POSSESSES THE POTENTIAL FOR TRAGEDY. WHILE THE PROPOSED SUBDIVISIONS WOULD NOT POSE A THREAT TO THE SAFETY OF THE PRESENT RESIDENTS OF WESTRIDGE AND HIGHLAND WEST, THE ALTERING OF 24th ST. WOULD POSE SUCH A THREAT. 3. MAJOR THOROUGHFARES ALREADY EXIST IN THE AREA OF THE PROPOSED SUBDIVISIONS. BOTH 20th ST. AND 34 BYPASS PROVIDE QUICK ACCESS TO THE EAST AND TO THE WEST. BOTH ARE ALREADY MAINTAINED AND ARE PROJECTED TO BE MAINTAINED BY THE COUNTY AND/OR THE CITY. BOTH THOROUGHFARES, WHERE THEY INTERSECT WITH 59th (65th) AVENUE, WILL PROBABLY REQUIRE TRAFFIC LIGHTS BECAUSE OF THE VOLUME OF TRAFFIC CARRIED BY 59th (65th) IN SERVING AIMS COLLEGE AND THE PROPOSED ROLLER RINK. AN INCREASE IN THE AMOUNT OF TRAFFIC OW 24th STREET WOULD NECESSITATE AN ADDITIONAL TRAFFIC LIGHT AT AN;; ALREADY POTENTIALLY HAZARDOUS INTERSECTION, AS WELL AS UNECESSARY MAINTENANCU OF AN EAST-WEST STREET WHEN TWO FOUR-LANE MAJOR ARTERIALS WILL ALREADY EXIST WITHIN APPROXIMATELY ONE MILE OF ONE ANOTHER. 4. SHOULD THE HEWLETT-PACKARD PLANT AND A PROJECTED TECHNOLOGICAL CENTER BECOME A REALITY, IT IS NOT UNLIKELY THAT A 24th STREET WHICH IS NOT DEAD-ENDED WOULD BECOME A SHORT CUT FOR THOSE CUNMUTERS WISHING TO AVOID TRAFFIC ON 20th, 34 BUSINESS, OR 34 BYPASS. SUCH A "SHORTCUT" WOULD VIOLATE NOT ONLY SAFETY STANDARDS; IT WOULD ALSO THREATEN THE CHARACTER OF THE PROPOSED NEIGHBORHOODS BETWEEN 71st AVENUE AND 59th AVENUE, AS WELL AS THE CHARACTER OF THE FUTURE COMMUNITIES IN THE AREA OF THE HIGHLAND PARK WEST PROPOSED SUBDIVISION. IN SUMMARY, THE RESIDENTS OF WESTRIDGE BELIEVE THAT GROWTH NEED NOT DESTROY THE QUALITY OF LIFE IN GREELEY AND IN WELD COUNTY, PROVIDED THAT THE CONCEPT OF THE RESIDENTIAL COMMUNITY IS MAINTAINED THROUGH THOUGHTFUL PLANNING PROVIDED BY THE VARIOUS PLANNING BOARDS WHO SHARE THE CONCERNS OF THE CITIZENS OF THE CITY AND OF THE COUNTY. WE DO NOT BELIEVE THAT THE CONCEPT OF THE RESIDENTIAL COMMUNITY IS SERVED IN THE CITY OR IN THE COUNTY IF THE SAFETY AND THE LIFESTYLE OF CITIZENS ARE THREATENED BY VOLUMINOUS TRAFFIC THROUGH RESIDENTIAL AREAS. THE HILLSIDE AREA IN GREELEY WAS WELL SERVED WHEN TRAFFIC FROM THE MALL WAS ROUTED ONTO MAJOR ARTERIALS. CAREFUL PLANNING CAN PRECLUDE SUCH A PROBLEM ON THE WESTERN EDGE OF THE CITY. THE CITIZENS OF THE AREA WEST OF THE HIGHLAND HILLS COMMUNITY THANK YOU FOR YOUR CAREFUL CONSIDERATION OF THEIR REQUEST. SINCERELY, DR. ARNI BURRON COMMUNITY REPRESENTATIVE CC: BOARD OF COUNTY COMMISSIONERS �4P August 16, 1979 Dear Commissioner, I live- at 2205 64th Ave. Westridge 4th filing, Lot 35 by choice - part mine, part yours. We .moved here eight years ago from a conjested Southern California area. We chose to reside in Weld County because it was an agriculturally oriented area and would therefore not be subjected to the malignant growth pattern so like many other communities. We planned on buying a few acres zoned Agriculture to attain our long planned dream - a place for ourselves and our children to enjoy clear skies, the cry of wild' geese and the few animals we have always been prohibited in the city. Suddenly, there was a Land Use Bill prohibiting the sale of less than 35 irrigated acres. We were forced by this bill into buying an estate sized lot "in the country" where we were assured by covenants and lot size that our dreams would not be threatened. Now, knocking on our back door (literally in our particular case) is the planned Allison Farm Subdivision, to include a High Density zoning which I feel will destroy the life style myself and-my neighbors have sought to achieve. Obviously the Land Use Bill has many benefits, which I can certainly understand. What I cannot comprehend is the differentiation between the private individual and the developer when prime agricultural land is plowed up and paved over - forever. I truly believe there are other alternately desireable lands to subdivide that would be more benificial to everyone than this particular parcel. Emotions are 'said to have no place in the progressive world of business, and let's face it, city growth is big business. Therefore, allow me to state some "logical" reasons this proposed development should be denied: 4, 1) Contrary to the expertise of Doug Sears ' engineer, the water table is quite high _ to the point of being swampy in some locations, thus making the land unsuitable for the proposed septic systems. 2) Page 35 of the Greeley Comprehensive Plan states "existing estate developments be given appropriate consideration when adjacent lands are developed" - if indeed they must be developed. 3) The Colorado; 'oming Gas pumping station on the southwest corner of 59th Avenue and 20th St. is at best "smelly". Can you guarantee that it is not . also a health hazard? 4) Increased traffic will create unsafe conditions on roads not engineered for the influx of additional motorists (i.e. blind spots at intersections, sharp curves, insufficient width and poor maintenance, especially in the winter.) 5) Does the city wish to destroy it's primary source of revenue by crowding out the farmer that made Weld County one of the most prosperous in the nation? Cr is. the Land Use Bill indeed just a farce? Thank you for the time you took in listening to my thoughts. Respectfully, • �g192021��: is,.,'\\ 4 ��'�� Sharon P. Clifton s 2205 64th Ave. • AUG 1979 '-', Greeley, Colo. 80631 • RECEIVED • 353-5633 Weld County �,to JJ7 nnission ;r) �6 8/95y02�' y "tr. ' 4. 2210 64th Ave Greeley , Colo August 17 , 1979 To : Weld County Planning and Count' Commissioners: Subject: The proposed zoning change of Allison Farm from Agriculture to Estate "E" and High Density "H" . We as home owners of 3 acres in Westridge singly and coll- ectively want to retain the Green Belt and our privacy that we have worked hard for over the past six ( 6 ) years to enjoy. The property owners of Westridge and Highland Hills ( approx , 90) in- all including the writer are very very concerned - regarding the proposed zone change . Cur protests are as followes: (A ) 24th St. being proposed-to become a collector- street. This will only result in becoming a high traffic problem and , a hazard as our life style consists of country not city living! ( B) The High Density zoning! High Density in this area does not constitute the surrounding area! We wish to have High Density spelled out so R-1 cannot be changed at a later date . ( C) The R.V. parking lot, that will only become a "Eye Sore " and in time , if not soon, ; willbe a,;junk heap ! (D) At least once a week we smell gas at our home which is over a 1 /2 mile Southwest of the pumping station. This morning it was very bad ! Has anyone checked into this -environmental problem? As it is obvious we do not want any building to go on out here , if the various agencys approve the proposed change we know Mr. Doug Sears will compliment Westridge and do his best to keep to our high standard of environment. ��6�0�20�2122�seq• s �� WC I'd9 RE �VE GEOCOcr; tool Weld • tom io► ! %�M1M11M1g to O (C( \ '� Dr. a -.s . M. G. Smite. 225 ; .._ Avenue ureelev , CO. 00651 „.---01819p0 Weld County ?fanning. Commission ��h �1c� �''�� 915 10th Street AUG A- Q\ Greeley , CO. 60651 ENE ^'! REC ascend of County Commissioners t,saisan �. cQ pp�elnt '\. P . C. Box 758 Greeley, CO. 50632 August 16, 1975 `9Sace �� S.:bje:t: Proposed re-zoning of Allison Farms to istate 2 Hi Lenslty Sear Commissioners : As resicents ntS and property owners of Westridge , we would like to ::-.trongly object to the prcposet re-zoning of the A_ _ison . arms and to she L oposea Plat Flans as offered by Sears :eat ,. This pro- posed: ucse ce"celot ..ent , which will include l C acres ..cr'th and West of iestr1age, has several aspects which we fi.na unac=- a:te--Listed in their order of importance tc us include: 1. We strongly object to the use of West 24th Street as a feeder street to the Southern portion of this development. At the present time, West 24th Street is a dead-end narrow road which enters 59th Ave . in, what is generally considered , and extremely dangerous intersection. At the present time only 11 families use this West end of West 24tn Street and that is about all the road can handle. If this development is allowed to use West 24th Street , our neighborhood will be significantly eroded by the tremendous increase in traffic . We therefore propose that both ends of West 24th Street remain as they are with no ex- tensions . This would mean that both ends of this street would continue as dead end streets . We do not wish that anyone go to the expense of paving these roads and then have a situation that presently exists at 17th Avenue near the Greeley Mall , where 17th Avenue is barricaded at 34 bypass . We feel that the traffic volume on 59th Ave . is already exorbitant and the proposed extensions of W . 24th Street would just ado the the volume of traffic . Fifty-ninth Avenue already has a dangerous curve and hill where many accidents and close-calls have . occured in the past. 2. We object to the presence of the High Density rezoning aspects of the proposal. Single and multiple family apartments seem out of place next to the 2 .5 acre minimum lots which exist in Westridge. The proposed use of septic tanks seems hard to believe in view of the negative Weld County Health Department recommendations . 5. We object to the estate rezoning on the basis of several aspects . In planning any new development it is vital that the development enhance and compliment the surrounding existing areas . The residents of Westridge originally movea to this area because of the large , open lots (minimum 2. 5 acres ) wnere norses and otner animals could be kept. " 'J Surrounding this area with apartments and small lot single family dwellings would significantly compromise our existing area. The pro- cosed recreational vehicle parking area on 59th Avenue would probably resemble a used car lot . The use of a septic tank system for over 100 individual homes seems impractical. In conclusion, we object to many aspects of the proposed Allison Farms rezoning. We do net feel it represents a good development. The time has passed when developers can buy corn fields and build anything that _` v' will make a buck: The concerns of surrounding residents who must live "�, with the development must be considered in future plans . Sincerely, 4 • — 6491 West 24th Street Greeley, Colorado 80631 August 15, 1979 Weld County Planning Commission 915 10th Street Greeley, Colorado 80631 Dear Commissioners: We are Westridge landowners responding to the notification of the rezoning request by Sears Realtors of Allison Farms. Our lot, n mber 31, is on 24th Street adjacent to the proposed zone change. We feel that any change in zoning, other than to greenbelt or very low density (estate), would seriously deny the lifestyle for which we moved into this area, that being a quiet, peaceful country atmosphere that is semi-private, relatively safe and free for our children and ourselves. John Givan and the city planning staff have expressed to us that the proposed site should be developed after the city sewer passes through the property, and then with a very much higher density, comparable to the Bittersweet Subdivision, this does not follow the guidelines set down in the Greeley Comprehensive Plan in reference to building on lands adjacent to existing estate developments. "The Plan does propose that existing estate developments be given appropriate consideration when adjacent lands are developed. Care should be taken to assure compatibility of land usage by any of the following means: 1, Gradual reduction of lot size and/or increase in density as distance increases from the estate development. 2. Separation by public or private open space."1 1. Greeley Comprehensive Plan, p.35-36. • (2) The minimum lot size in Westridge is two and a half acres. We believe that a gradual reduction in lot size to one acre, and then on down, would be desireable for adjoining developments. Avery major concern of ours deals with the future of 24th Street. In the Greeley Comprehensive Plan, the following goal is stated: "1. Streets and highways shall be developed to serve future growing transportation needs, however, they shall not predominate the com- munity envircnment. Land developments shall be geared to meet the needs of the pedestrian, with the automotive concerns being secon_ dary."2 Any new development in the land section in which we live will pose traffic problems on 24th Street, which is designated as a "collector street." The definition of collector street is as follows in the Greeley Comprehensive Plan: "Unlike the categories of streets mentioned above, the collector street is generally not a through street. It collects traffic from within the neighborhood areas and routes the traffic to arterial streets. The design of the collector should be such that through traffic is discouraged. This will tend to keep traffic volumes at a low level, reducing to a similarly low level the quantity of ad- jacent land use conflicts." "Unlike the past policy of forcing the collectors into a grid system, the Plan proposes that collectors be considerably set off the half- mile section line in an irregular fashion. The collector is then located to serve the needs of the neighborhood--not to severthe neighborhood, as is the case under present practices." Please refer to the map on page 101 showing the desireable offset collectors, which do not cross arterial streets, and then please refer to the map on page 106, which shows the future 24th Street. Note that • 24th Street cuts across 59th Avenue, the only major north-south arterial west of 35th Avenue. This intersection is just below the crest of a hill 2. Greeley Comprehensive Plan, page 104, Goals. 3. Greeley Comprehensive Plan, page 107-108, Collector Streets, 4' (3) on 59th Avenue, and 24th Street has a curving hill right before the approach. It is a dangerous intersection now; it could become very dangerous with a higher volume of traffic. Notice also that 24th Street extends all the way from 71st Street to almost 47th Street. This makes for one heck of a long "drag, " double meaning intended! Its proposed length is approximately two miles long. We submit to you that 24th Street future plans donot conform to the intent of the Comprehensive Plan, and that the street design should be changed, such that new neighborhoods have their own collector streets, and not cut through ours. Westridge is already severed by 59th Avenue. Must we be severed again by 24th Street? Please give consideration to a sol- ution to this problem soon. If the AllisonFarm property must be developed, we would certainly back the estate zoning proposed by Sears Realtors. We cannot support anything denser. It seems to us that the City of Greeley Planning Staff (esp. John Givan) is not responsive to the people's wishes and rights to a choice and freedom of individual lifestyle, and that they themselves are encouraging urban sprawl by not filling in open building spaces that now exist within their present boundaries. Thank you for your time, patience and consideration. Sincerely yours, ansi ..I te NV 1617/89 digt 1979 b ReCF/AS 95) N LCD IMME co 7 August 3, 1979 Department of Planning Services 915 10th Street Greeley, Colorado 80631 RE: Preliminary Plan - Allison Farms Subdivision Dear Sirs, As a property owner in the surrounding area, I am greatly concerned that Sears and Comapny Realtors not be allowed to change the Zone"A" to Zone "H" High Density District on the property they described as: Pt. E% NA, Section 16, T5N, R66W. It is my concern that in doing so they would take away from the atmosphere created in the area already which is basically custom homes on either large lots or large estate lots. I feel that the plans to have a zoning change for property: Pt. Nk NEz and E3 NW3, Section 16 from "A" to "E" Estate lots would be in keeping with the already established area and I have no objections to this parti- cular zoning change. I am planning to attend the meeting on September 4th in order to hear more on these proposed changes. Very_ uiy your i v5/c 8 9 Job 'Robert Bechthol ty�6� f1�' 2044 Fairway Lane r pUG v'0-19 l� Greeley, Colorado 80631 e"gyp :r c R we!0�p°a�u�ea •, plaeen4, yob' O , , SearsJand Company, Realtors S=163 : 79 : 8 SURROUNDING PROPERTY OWNERS July 30, 1979 V Roy and Virginia Lundvall Rene and Georgia Moraan 1937 15th Avenue 5728 24th Street Greeley, Colorado 80631 Greeley, Colorado 80631 `J Elmer Lundvall Donald and Ethel Miller 26th and Bypass 5722 24th Street Greeley, Colorado 80631 Greeley, Colorado 80631 Paul and Ellen Crespin Robert and Frances Gilbert 2115 58th Avenue 1318 47th Avenue Greeley, Colorado 80631 Greeley, Colorado 80631 Harry and Helen Cross Barry and Vickie Williams 2300 51st Avenue c/o Empire Savings Greeley, Colorado 80631 P. O. Box 1122 Greeley, Colorado 80631 Royal and Shirley Henry Wray, Colorado 80758 Highland Hills Freewill Baptist Chu) c/o Rev. Bob Thomas Donald and Teresa O'Malley 5401 Arrowhead Drive 2221 Fairway Lane Greeley, Colorado 80631 Greeley, Colorado 80631 Robert and Patricia Bechtholdt Lawrence Levenson 2044 Fairway Lane 3405 16th Street Greeley, Colorado 80631 Greeley, Colorado 80631 Michael Gasparich Gilbert and Paula Sydney 810 12th Street 2317 58th Avenue Greeley, Colorado 80631 Greeley, Colorado 80631 JER John and Carol Bartlett 26th and Greeley Bypass 1418 30th Avenue Greeley, Colorado 80631 Greeley, Colorado 80631 James and Jacquelyn Calhoon Walter and Grace Cole 5719 West 24th Street 2335 Fairway Lane Greeley, Colorado 80631 Greeley, Colorado 80631 Nicholas and Janice Francis Allen and Linda Weber 2646 Meadowbrook Lane 2341 Fairway Lane Greeley, Colorado 80631 Greeley, Colorado 80631 Jerry and Moneth Piper Jack and Ruth Stephenson 2320 58th Avenue 2 Denver Avenue Greeley, Colorado 80631 Johnstown, Colorado 80534 Henry and Helen King Frank and Roberta Carter s `f 11*N 2316 Fairway Lane 1904 33rd Avenue \:,G i-"\�FQ. �OU� Greeley, Colorado 80631 Greeley, Colorado 80631 Sears and -Company, ealtors S-163."'79 : 8 SURROUNDING PROPERTY OWNERS July 30, 1979 Dale and Ophelia Greer Ruben and Eglantina Martinez 2312 Fairway Lane 2056 Fairway Lane Greeley, Colorado 80631 Greeley, Colorado 80631 John and Marvene Solberg James and Ann Ehrlich 2104 26th Avenue Court 5804 Fairway Lane Greeley, Colorado 80631 Greeley, Colorado 80631 Orrin and Kathryn Osterholm 2304 Fairway Lane Greeley, Colorado 80631 ' Western Slope Gas Company P .O. Box 840 Harry Roth Denver , Colorado 80201 2280 Fairway Lane • Greeley, Colorado 80631 Colorado Interstate Corporation P. O. Box 1087 Wilbur and Lynelle Benshoof Colorado Springs , Colorado 80901 2075 17th Avenue Greeley, Colorado 80631 Lillian Bird 2420 71st Avenue Richard and Mary McPhee Greeley, Colorado 80631 1845 24th Avenue Greeley, Colorado 80631 \\./ Earl Drake 14755 Ranchero Drive Timothy, Susan and John Kerr Reno , Nevada 89502 2206 Fairway Lane \ Greeley, Colorado 80631 Ni Donald and Nancy Elliott 1805 Montview Road Jerry and Rita Kiefer Greeley, Colorado 80631 2120 Fairway Lane Greeley, Colorado 80631 William and Ruth Elliott 1516 71st Avenue Walter Bergendahl Greeley, Colorado 80631 Greeley National Bank Plaza Greeley, Colorado 80631 Near West Land Company 707 7th Avenue John Knowlton Greeley, Colorado 80631 656 Ardsley Road Winnetka, IL 60093 W. B . Livestock Company 880 Cherry Street Jim and Patricia Robenstein #703 2152 31st Street Denver , Colorado 80220 Greeley, Colorado 80631 Leonard and Shirley Gadeken Robert and Carol Harris 2520 71st Avenue 2060 Fairway Lane Greeley, Colorado 80631 Greeley, Colorado 80631 Joe and Alice Hastings 6905 West 28th Street Greeley, Colorado 80631 Sears and Company, ealtors S-163': 79 : 8 SURROUNDING PROPERTY OWNERS July 30, 1979 Rocky Mountain Enterprises , Inc . Michael and Frances Paul , Trustee 77 North Bridge Street 2210 64th Avenue Sommerville, New Jersey 08876 Greeley, Colorado 80631 '‘N-.1 John Wachsmanns , et al Myron and Marguerita Smith 3203 Colorado Avenue 2250 64th Avenue Loveland, Colorado 80537 Greeley, Colorado 80631 NRocky Mountain Enterprises \ James and Jean Mallett of New Jersey, Inc . 1745 28th Avenue Water Trust of 1971 Stewart Title Greeley, Colorado 80631 Company Trustees 916 10th Street Herman and Dorothea Kliewer Greeley, Colorado 80631 2501 20th Street Road Greeley, Colorado 80631 Joel and Joyce Rothman 6515 26th Street Richard and Janet Hunter Greeley, Colorado 80631 2108 21st Avenue Greeley, Colorado 80631 Jerry and Nancy Crews 6480 24th Street Robert and Lois Frank Greeley, Colorado 80631 2402 Mountair Lane Greeley, Colorado 80631 Donald and Judith Roth \ I 723 40th Avenue ` Timmy and Eileen Gordon FCC W1`\ Greeley, Colorado 80631 2616 14th Avenue Court\ L1s-Ni& % Greeley, Colorado 80631 ? -5s"Y Grant and Mary Phillips 6350 24th Street Danny and Jody Goodwine Greeley, Colorado 80631 c/o United Bank Trust Department P. O. Box1057 Ni Arnie and Kay Burron Greeley, Colorado 80631 2516 24th Avenue Greeley, Colorado 80631 James and Marlene Hessler 5317 West 24th Street Terry and Dian Discoe Greeley, Colorado 80631 6491 24th Street Greeley, Colorado 80631 \\ I Kenneth and Carol Shropshire 1949 21st Avenue Greeley, Colorado 80631 N4 Oren Joan Sprauge � � 2225 A 64th Avenue v `^� Greeley, Colorado 80631 Richard and Sharon Clifton 2034 26th Street Road Greeley, Colorado 80631 S Sears and Company Realtors S-163 : 79 : 8 MINERAL OWNERS August 29, 1979 Union Pacific Land Resource Corporation 1416 Dodge Street Omaha, NE 68179 Pan American Petroleum Corporation 1416 Dodge Street Omaha, NE 68179 Champlin Petroleum Corporation 1416 Dodge Street Omaha, NE 68179 Amoco Production Company 1416 Dodge Street Omaha, NE 68179 Far West Land Company 550 Greeley National Bank Plaza Greeley, Colorado 80631 Margaret Marie Henneck 2543 West 15th Street Greeley, Colorado 80631 State of Colorado State Capitol Annex 1375 Sherman Street Denver, Colorado 80203 t V2312 Fairway Lane O Greeley, Colo. 80631 October 5, 1979 Mr. Norman Carlson, Chairman Board of County Commissioners 915 10th Street Greeley, Colorado 80631 Dear Mr. Carlson; Reference DOCKET NO. 79-88 and DOCKET NO. 79-89 applicable to the request by Sears and Company, Realtors to rezone the Allison Farm from Agricultural to Estate and High Density. This matter is scheduled for hearing by your board at 2:00 P.M. on November 7, 1979. The preliminary plans for this rezoning have been approved by the City Planning Commission and Weld County Planning Commission over certain objections by surrounding residents of Highland Hills and Westridge. In their decision process they also ignored the objections and recommendations made by the Weld County Health Department. Due to the high water level and solid sandstone formations underlying the proposed develop- ment the Health Department does not approve the use of septic tanks. The Health Department feels the only safe and sanitary way for disposal of the waste water and sewage is through the use of the normal Greeley city sewer disposal system. This centralized sewer system should be available for hookup by this proposed subdivision within the next few months. The Health Department is also against locating the R.V. Storage Area next to the was pumping station currently located on the property. The Health Department study and recommendations have been made a part of the Allison Farm rezoning package for your review in making your final decision. We have personally contacted a majority of the property owners who presently live in the western portion of Highland Hills and without exception they have expressed their opposition to locat- ing an R. V. storage lot (eventually resulting as a sore eye) along the west side of 59th Avenue not only because of the reasons put forth by the Health Department but also due to the depreciating effect this would have on nearby residential property. With the current high-type development (Aims College, Family Sports Center, Skating Rink) in the vicinity of West 20th Street and 59th Avenue along with the increased traffic antici- pated, requiring subsequent upgrading of these traffic routes, we feel any R.V. storage lot approved for construction should be located on the back side of the development, or at least not along side of a main traffic artery like 59th Avenue. Your sincere review of all the facts available and unbiased opinicn^when making your final decision will be greatly appreciated. Sincerely, We>) -s, 74 He�King Greer a 1 1 elen King phe is eer J '~ SI' 'ATURES OBTAINED BY: Ms. Sharon P. Clifton 8 Henry King 18 PETITION Mr/Mrs. Dale F. Greer 1.30 TO: THE BOARD OF COUNTY COTMT1iOPIONEPF OF WELD COUNTY,COLnF 10 The below signed neighbors bordering the Sears Company - Allison rarms subdivision, (A tract of land located in the East half of the Northwest nuarter of Section 1(, Townshir 5 North, Range 66 West of the 6th nrinciral 'Meridian, Weld County, Colorado. ) would like to protest the prorored unsi&tly RV rnr}king area in the belief that such a parking area is not in keeping with the standards already set by the surrounding area. 1. S r75,./J,j.' Z _2,1/- -j�a Lc ,, - - 5-.2 1122' 2. lie.A.c k,.,2 4. A,c,c _ 2 >0 fa.wc,."4.-----c. _ 31?Z -- u 6.'1' ...._. . . 3,_ _____. ,.__; it 1 . <a.,1/Q _ ,.206 - _._ .. ._.. .. • ,,,v,;2/4, � tt-l+-gal Xet-4‘ — , - 7.511.1....._ 5. T --i_ r+LnaA 1- .eJf A..r 3S - _ 7.s`t r. . -D.)2 ,1 .4&,,A_,,,z. -t:i.,k,-(c. 3 S — 0 1 , 7. - 6i_ I e l'i". , ,Ye) g Zteh.f,v-,te?Ta .-712 - 0 5- 9' 7 1^• a ''(:L. Spi :,',3 V7 t"(1w1 way-. 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CD. 163. — — — _._..___..__ __._._.__. ..._ -..._....... . • 1614. _ _ _ . 165_ 166. 167. 168 . 169 . 170. 171 . . .. .... _ 172. __ ...._. -------- 1-74 . 7 7 _.__._._.__._. ...___.____.._. . _..._....__ PETITION TO: THE BOARD OF COUNTY COMMISSIONERS OF WELD COUNTY,COLORADO The below signed neighbors bordering the Sears Company — Allison Farms subdivision, (A tract of land located in the East half of the Northwest quarter of Section 16, Township 5 North, Range 66 West of the 6th Principal Meridian, Weld County, Colorado. ) would like to protest the proposed unsightly RV parking area in the belief that such a parking area is not in keeping with the standards already set by the surrounding a. 1. 2. 3. a1.+- d at. Zi. / 5. /f/es, 1 /11c3 roLt' i 6. v.4cc; ,.s 7. i i k, `� V '' ,.,Z��( � 2-/4 8 P'>%"�'�tL 9.�7 yyy. (4-111,1(4 ,p-y.i.,+-74:0.(2.44,4-Str-A#45`a .v_3) 0,f/ 12. _%' , 1 )) f 13.7) ,..2, ✓ � / l f` )"G )Z / 1 "rd4 � 14. L � 15. 16. 17. 18. 19. BIC URY Process Package Plants for § econdary Wastewater Treatment 'Cs, • +! SIt.0 1. A� } k • L^O^"ii at tip" t .L g:.F . ,A • p•a 40., . . , • + s ,... a WO-MODULE'Packaged Secondary Wastewater Treatment Plant. RIO-MODULE'SHAFT for Secondary WastewaterTreatment in Concrete Tankage. APPLICATIONS Residential Subdivisions Schools and Campgrounds Apartments and Condominiums Recreational Areas Industrial Parks Highway Rest Stops Food and Beverage Processors Construction Camps Temporary Treatment Plants Autotml's BIO-SURF process is the most advanced biological BIO-SURF Media system available for secondary wastewater treatment.It is a simple,compact and economical method of treating a wide i The photo shows a cross-section of the HIOSURF media. It -'- ' range of domestic and industrial wastewaters.It achieves high consists of alternating flat and comrgated sheets of tx444, rylene suitable for discharge I which are thermally sarebondedeffluentcomigated vanarnn-formed with integral radial ammonia nitrogen as well as BOD and suspended solids. Passages.The radial passages allow a free flow of wastewater. air and stripped biomass in and out of the media as it rotates. Process Description .aiu, The BIO-SURF process is a secondary biological treatment system.It consists of from 2 meter to 12-foot diameter corm- li, gated polyethylene nedfa,which is mounted on a horizontal tan �� shaft up to 20 feet long and placed in a steel or concrete tank about The media is rotated at 1.5-3 rpm while 40%of the surface area is immersed in wastnissr. lialairrallirin Shortly after start-up,microorganisms begin to grow on the surface of the media.One to two weeks later,the entire surface area is covered with a 2-4 mm thickness ofbiomass. Nrakweesaan The 81O-SURF process is ideally suited for package plant • applications where pox ess simplicity and low maintenance'Ire critical requirements.low power consmption,stable operation , - II- • under large flow fluctuations,and ease of sludge handling also ��r"� I contribute to the attractiveness of the BIO-SURF process for ` ' . this application. . Many RIO-SURF prows package plants are currently in oper- ation in a wide variety of applications,including sdoiieisions, apartments,industrial parks,small foot professors,will xds. Rotation of the media alternately contacts the biomass with the campgrounds,recreational areas,highway rest stops and wastewater for removal of organic materials and exposes it to drilling camps.They arc being used to treat flows ranging from the air for absorption of oxygen.The amount of attached bin- 5.000 to 50,0(X)gpd. mass is relatively large compared to the amount of wastewater under treatment—the equivalent of 10,000 to 20.000 mg/I of Transportable Plants mixed liquor volatile solids.This allows high degrees of treatment to be achieved for relatively short retention times—usually about RIO-MODULE units are transfortable secondary treatment plants.which can be used to meet temporary treatment require- one hour for most treatment requirements. ments.When operated in conjunction with primary treatment Rotation of the media at a peripheral velocity of 1.0 foot per and sludge disposal facilities,they can provide complete second exerts shearing forces on the biomass which strips ex- secondary treatnent at one site for a given period of time and cess biological growth and prevents clogging.The mixing action then can be easily nu ved to another site.Applications for of the media keeps stripped biological solids in suspension BIO-MODULE units include subdivisions awaiting connection until the flow of treated wastewater carries them to a clarifier to municipal sewer systems and small communities eventually for separation and disposal. to he connected to regional treatment plants. 2 __n1 BIO-SURF PROCESS BENEFITS Process Simplicity.Because wastewater flows through the personnel costs,too.There is no need for skilled personnel BIO-SURF process just once without any effluent recycle,and to constantly supervise the operation. because settled secondary sludge is not recycled,the process is High Degrees of Treatment.By utilizing an appropriate very simple to operate,and no complicated controls are neces- amount of BIO-SURF media,very high degrees of treatment sary.BIO-SURF process performance does not depend on can be achieved.Effluents of less than 10 mg/I BOD and sus- operator skill.Continued rotation of the media assures proper I pended solids and less than I mg/I ammonia nitrogen can be operation. consistently produced. Process Stability.The BIO-SURF process is not upset by i Favorable Solids Characteristics.Sludge produced by the fluctuating hydraulic or organic loading.A hydraulic surge will process has excellent settling characteristics—10 to 15 feet per riot wash out the microorganism population which Is captive in hour.Solids loading on secondary clarifiers is quite low,which the media.An organic shock load will not cause bulking and I allows the use of shallow clarifiers.Because there is no need loss of solids from the secondary clarifier.Other wastewater i for rapid recycling of settled solids,simple scraper-type collector treatment systems cannot operate efficiently under such conch- - mechanisms can be used. tions without continuous operator supervision. , Ease of Expansion.Modular construction,shallow excavation. Low Maintenance.The components of a BIO-SURF system and low hydraulic head loss allow the RIO-SURF process to be are simple and operation is uncomplicated.The slowly rotating easily expanded to meet increased wastewater flows or to meet media is not subjected to unusual stress or to shock.Very few I higher treatment requirements.These same characteristics metal parts are used in the construction of the equipment.The enable the RIO-SURF process to lx'easily incorporated into media does not require cleaning.Maintenance consists primarily t an existing plant to upgrade its capacity and degree of - of periodic lubrication of drive system components. i treatment. Low Operating Cost.The slowly rotating surfaces require very ! Absence of Nuisances.Rotation of the media prevents clog- ... i little power.Thus,power requirements are much lower than for ging and continually exposes all the biomass to the air to r conventional processes—only 0.3 hp-hr per pound of BOD provide efficient aeration and to eliminate objectionable odors. t removed for a typical application.With energy resources dwin- There are no noisy compressors or blowers-and there are no '.'`j' dling and power costs rising,this characteristic of the process is ! foaming problems. becoming increasingly important.A BIO-SURF system saves APPLICATION TO PACKAGE PLANT OPERATION i Pretreatment MODULE unit.These systems are applicable to wastewater I Pretreatment requirements for the BIO-SURF process are flows of 5,000 gpd up to 90,000 gpd. limited primarily to removal of large,dense solids which might otherwise settle out in the RIO-SURF tankage.Removal of I BIO-MODULE SHAFTS these materials can be achieved by primary settling or fine BIO-MODULE SI IAITS of 2.0-meter and 12-foot diameter are screening.In many applications,a simple septic tank will pm- also available for installation in concrete tankage and cover a vide adequate pre-treatment.For some industrial wastes,there range of flows up to 250.((X1 gixl with supplementary waste- may be additional requirements for nutrient addition and pH water pumping and 135.000 gpd with bucket feed. control. Flow Equalization j BIO-CLARIFIER SHAFTS Because many package plant applications often have extreme RIO-CLARIFIER SHAFTS for sludge removal are available for in wastewater flow,it will improve treatment effi- ciency installation in concrete secondary clarifiers to follow the RIO- fluctuations ciency and reduce the required size of BIO-SURF process MODULE SHAFTS and are applicable up to 100,000 gpd. equipment when these flow variations are equalized.This is accomplished by installing an equalization tank after the pre- Final Effluent and Sludge Disposal treatment step.In addition to reducing the required BIO-SURF Effluent from the BIO-SURF process clarifier can be discharged process equipment, it also reduces the required size of the to surface water or into a new or existing tile field,sprayed onto secondary clarifier and chlorine contact tank When a septic fields or into wooded areas,or placed in evaporation ponds. tank is used for pretreatment,it can also include the flow I Secondary sludge from the clarifier can be stored aerobically or equalization step. anaerobically in a sludge holding tank.A septic tank for pre- BIO-MODULE UNITS treatment call also serve to store secondary sludge.From time to time,the septic tank or storage tank is emptied for ultimate BIO-MODULE units of various lengths and in 2.0-meter disposal of sludge.This can be accomplished by a septic tank and 3.2-meter diameters are available in prefabricated steel pumping service or by drying beds and land fill. tankage including BIO-SURF media,bucket pumping mechanism and drive system. Enclosures BIO-MODULE units have capacities up to 200,000 gpd.Sup- RIO-SURF process package plants require enclosures to pre- plementary wastewater pumping is required where treatment vent excessive loss of heat from the wastewater during winter capacities exceed 90,000 gpd. operation and to avoid exposing the biomass directly to cold -m ambient temperatures.This can be accomplished with a fiber- BIO-CLARIFIERS glass general purpose cover supplied by Autotrol or with a BIO-CLARIFIERS with sludge removal mechanism and I conventional structure.Forced ventilation is not necessary. chlorine contact tank are also available for use with the RIO- Heating is necessary only for extreme climatic conditions. 3 • BIO-SURF PROCESS DESIGN PROCEDURES BOD Removal Septic Tank Effluent Hydraulic loading has been found to be the principle design ` A septic tank provides a very simple means of pretreatment. criterion for the BIO-SURF process.To determine the amount However,it does produce an effluent which is somewhat more of B1O-SURF media required for a specific application requires difficult to treat than a fresh waste.Field testing has shown simply that the appropriate hydraulic loading be selected from that degrees of treatment equal to those on fresh waste are I the figure below.Dividing the design flow by the hydraulic achieved on septic tank effluent at lower hydraulic loadings. loading rate yields the amount of 81O-SURF media surface To alter the septic waste to fresh conditions and develop an area required. acclimated culture requires that the amount of BIO-SURF The ROD removals shown in Figure 1 are for the BIO-SURF media determined for a fresh waste application be process after secondary clarification and do not include any increased by 50%for septic waste. BOD reduction from primary treatment.When using fine screen- ing or septic tanks for pretreatment,we suggest that no BOD Temperature Correction reduction be credited to the pretreatment.Because the amount ' Wastewater temperatures above 55 degrees F do not affect of ROD removal by pretreatment is relatively small,this proce- treatment efficiency.Below 55 degrees F.the BIO-SURF dure results in just a slight increase in 81O-SURF media process,like all biological treatment systems,will show de- requirements and provides a slightly conservative basis for creased treatment efficiency.However.by operating at a lower I design. • hydraulic loading,equal degrees of treatment can be main- I The RIO-SURF process can be designed to consistently pro- ' tamed.Figure 2 shows temperature correction factors which duce effluent BOD of 10 mg/I.Effluents of less than 10 mg/I are used to increase the amount of BIO-SURF media for have been produced by the BIO-SURF process when operated : conditions of prolonged low wastewater temperatures. at less than its design flow.This points out a significant benefit Yrs when underloaded,unlike otherprocesses which have i " - —t-- t--�--r-T i— t-- r for the process in that it produces a higher quality effluent r 1 I difficulty a --- —1- r -- - li operating iently when R I approximately B O SURFFproc 1/3 soluble e is o 2 320m /insoluble BOD.consist m ~Where effluent a quality of less than 10 mg/I BOD are consistently tertiary ° 'I required, co � i 1 filtration is recommended. 1 — — \ it - . o m � 1 : - ¼ o_ m " E p 2 e_ — _ I Wastewater Temperature°F„E eiFlow Equalization F � __ _ The se of the flow equalization tank follng pretreatment is o �-i determined on the basis of the daily wastewater flow pattern. • o n -'- The purpose of the flow equalization tank is to provide a reason- : at I ably uniform wastewater flow to the 81O-SURF process even , though most of the daily flow may enter the plant over a ' • ; relatively short time period.The following are general guidelines • 1 Hydraulic Loading,GPD/FT' ' for determining the flow equalization tank capacity: Suspended Solids Removal Daily Period when Wastewater Recommended Flow Equaliza- • Flow is Less than 25%of tion Tank Capacity as Suspended solids removal occurs in the BIO-SURF process in I i Average Flow Percent of Daily Flow • the same proportion as BOD removal.When the process is Hours • designed to achieve a specific effluent BOD concentration,the o -- — b suspended solids will be at the same or slightly lower 4 10 concentration. 6 15 i �'-s 8 25 12 33 I 14 50 16 60 18 or more 67 4 _i— Ammonia Nitrogen Removal 4,0 I Regulatory agencies are beginning to impose requirements for - the removal of nitrogenous oxygen demand,NOD,(as ammonia nitrogen)in addition to BOD and suspended solids removal. F 010-SOW PROCESS The B1O-SURF process is well-suited to the removal of NOD, Q RI1RIFIIATION OF PRIMARY EFFLUENT —-_ PEAR TO AVERAGE FLOW RATIO because of the natural development of nitrifying organisms in 6 the latter stages of multi-stage BIO-SURF installations. I '0 INLET eoG,.E,. Figure 3 shows the design relationship for ammonia nitrogen ; Ei ' removal.B1O-SURF media requirements for nitrification must a be compared to those for BOD removal,and the larger of the 2 2.5 tw two determines equipment selection. 0 100 zsa II i0 a Inlet BOO Concentra—tion,mg/@ Ee r..allidi/# 40 5 z5 20 IS Maximum Ammonia Nitrogen j C ',centre ion,mg/t. 4 LE 0 - t-� w F w w_� I LO 70 7S HO ES SO ES WO x I I - 8 O-SU ACA PROCESS i_ _ __. _ —__ _ 4 %Ammonia Nitrogen Removal '+= ON OF PRIMARY EFFLUENT j I o. _ BIOSURF m l• = _ f _f I {+ \, } j i Temperature Correction kx a a ` . -- 4t _1 , Nitrification efficiency is also decreased by low wastewater a F f temperature.Figure 5 contains temperature correction factors Region of Unstable l - ' ; which will compensate for the low temperature conditions. . ' - i Nitrification 'IN I. . 1 . Nitr,f lca l 1-. I I I I t '`gI . , I .] 9.5 l.Q i.J 3 Hydraulic Loading on 81O-SURF Process,GPD/FT' T %A mmonle Nitrogen Removal I • .. \ I Septic Tank Effluent 9 - k--- "T --"-- TEMPERATURE CORRECTION FACTOR--- p LL FOR NITRIFICATION As for BOD removal,the lower treatability of septic wastes c requires 50%more BIO-SURF media for nitrification. ;, e Peak Flow Correctionu With widely varying flow conditions,there is the danger that C - ---- - - - ---- nitrifying bacteria may be displaced from the latter stages by @ the more rapidly growing carbon-oxidizing bacteria.To avoid Ea \�`__- this,it is necessary to prevent high concentrations of BOD j a - - - ----- I from entering the latter stages.Figure 4 indicates the allow- able peak to average flow conditions which will achieve this. If the actual peak to average flow ratio exceeds the allowable • ---- - ----i- -- - ---� --- _. _. _ _. _ L value,either flow equalization must be included or the average design flow must be increased along with the required 81O- 5 W estewetur Tempereture,"F SURF media area. Equipment Selection When the appropriate amount of RIO-SURF media surface j area has been determined from the preceding design proce- dures,the desired form of BIO-SURF process equipment can ' be selected from the following pages. 5 a BIO-MODULE UNITS BIO-CLARIFIERS Description Description A BIO-MODULE unit is a packaged wastewater treatment A B1O-CLARIFIER is a secondary clarifier with rotating sludge plant designed to treat domestic or industrial sewage through a scoop and chlorine contact tank incorporated into a semi- process where fixed aerobic cultures of microorganisms remove circular steel tank One or more of these units are intended to both dissolved and suspended organic matter from the waste- operate in conjunction with a BIO-MODULE unit. water.A BIO-MODUIE unit consists of a wet well, rotating bucket feed mechanism,and multi-stage BIO-SURF Operation media incorporated into a semi-circular steel tank The 810- A baffle in front of the clarifier influent uniformly distributes the MODULE unit is intended to operate in conjunction with pri- flow throughout the clarifier.Clarified wastewater passes over man)treatment.secondary clarifier and sludge disposal facilities. a weir in the opposite corner of the clarifier into a baffled chlorine contact tank.Sludge which settles in the secondary Operation clarifier is picked up by the sludge scoop and flows by gravity After pretreatment,wastewater enters the BIO-MODULE wet to digestion and storage equipment.The sludge scoop operates well where it is picked up by the rotating buckets.The in the following manner: buckets are attached to the main shaft by hollow anus.As the bucket is raised to the same elevation as the shaft,the waste- the the scoop is across rotated into the Acls the hers it scooppu rotahes esls into down "� side and the bosom.As rotates the water flows down the hollow arm and is discharged parallel to I 7 o'clock position,the reservoir,to which it is connected by the shaft over a bulkhead into the first stage of the BIO-SURF hollow support arms,enters the clarifier.As it does,wastewater process treatment. pushes sludge in the scoop through the support arms to fill the After entering the first stage ge of the BIO-SURF process,waste- reservoir.As the scoop and reservoir complete the rotation, water passes through a submerged orifice in the center of each sludge is emptied from the reservoir through hollow connecting bulkhead separating individual stages of treatment.Mixed arms to the hollow drive shaft.From there,it flows by gravity liquor from the last stage of media passes over a weir and to sludge handling facilities.The scoop has an independent flows to a secondary clarifier. drive system and rotates at a speed of 4 RPH. `—DRNCLEARANCE NOE B10-SURF MEDIA INTERMEDIATE BAFFLE T BIO-MODULE 3.2m MODEL NO. !21-101 21.154 621-204 EIIective media area UPI 39.500 56.000 I{ t}' Operating wt (lb 53000 13000 94.000 1--L� ----- Sh,pping WI (lb I 18000 20.000 24 000 I il. - ■ ICI Motor horsepower' 1'5 2 3 _., A IS'3'ti 20'3':" 25'3'j tIT 'L �� • .— I■ .—. - Y J-- Bucket pump capacities with 1.2.3or 22.500 45000 61.500 80.000 �� -_L 4 buckets(GPO) •om.. .e,,o o.,..n...u,,.. . A r-BUCKET GUARD GEAR REDUCER BUCKET FEED T �I • /NAME PLATE DRIVE ' �■ SHAFT BEARING ADJUSTABLE ,) __TI WEIR B'EFFLUENT WATER LEVEL CONNECTION • i T r� f r 2' 1,4"DRAIN 4"OVERFLOW INFLUENT CONNECTION CONNECTION STEEL TANK 1y DRAIN CONNECTION CONNECTION 6 ,*". t,.6, /45 Ion BlO-MODULE 2.0m r 1 MODEL NO. 622-052 622.104 622-154 Effective media area(WI 4400' 7.900 13.500 .4.. „" Operating vol (lb.) 14.500 22.400 30.900 4 • _ - Shipping wt (lb) 5.900 7.950 9.950 Motor horsepower, h •- '4 Y. 13" t...I. ..T. ,..., , 13" A flange to flange dim 10'•%. 15'-K• 20'-%" 1-. ' Bucket feed capacity 1 with 1.2.3 or 8.000 16.000 24.000 32 000 7'-10( " 4 buckets(GPO) ii -.1 --4 1 I r 'In P pa.•,M mows.5.19.• ., p, , r "be even moo mad•nine,• OM*,..oo�o,s a.a.uo.• DRIVE — A ' . 8"EFFLUENT CONNECTION i Iffr .. ��•. r, I1 wa.wirr.a 7'-231" - - . 3: WATER 2'•8 " I t_./2" — • 1 LEVEL 18 ► 1 .I ::a 2 W' - 2'OVERFLOW 1f4"DRAIN 6'INFLUENT 1'S"DRAIN CONNECTION CONNECTION CONNECTION CONNECTION 1'_4- +f BIO-CLARIFIERS S 2.0m /' 2m MODEL NO. 642-1 642-2 641-1 641-2 WEIR �D—+J A Clarifier Length 5'-0" 10'-0" ' ' 10'•0" r B Chlor contact tank 4'-0" 8'-0• 2'-6' 4'-0• \ r C Flange to Mange dim. 11'-08). 20'-0Y." 9'-6V 16'-011" ' Shipping wt (lb) 3.500 5.000 5.700 7.200 Operating wt (lb) 9.950 17.900 23.000 39,600 2"SLUDGE D Flange to g sludge DISCHARGE discharge 2'-814" 6'-814" t'-2x" 2'-814' E CONNECTION Civilian area tit') 35 70 565 113 Clarifier volume(gal.) 490 980 1.445 2.890 3h• Chloe contact tank •I volume(gall 278 556 605 970 I E 8'-0" 12'-0- F 13' 2'•8' ` �+ a 2'-8" 4'-11• F H 3'.8' 5%9" J 7'-I' 11'•64" I r ^{J , � G K 2'-415' 41.4" L 4%3' 031-4" M " 3' N 3,7" 5'-9x' 4, P 1B" 2''-3'-3"S 2' 4' $/O ?'(,,,B T 6" 8" A Motor.(4 hp.115 V.single phase open drip-prool enclosurel...}.._________ C Other O 7 /p;rons available. -lib j, 7 _C \\ DRIVE L • O M t L P T 7 R T 1\ rr `,,S S •1":1i'eiN / i K .,' ' INFLUENT EFFLUENT CONNECTION RECYCLE 13i"DRAIN CONNECTION. CONNECTION EACH END 7 BIO-MODULE SHAFTS c___,—,,, T"I. L --; B1O-MODULE SHAFTS are supplied to be installed in con- Because 12-foot diameter media is available for this type of crete tankage.The BIO-MODULE SHAFT includes several installation,it can be applied to greater wastewater flows than stages of B1O-SURF media mounted on a horizontal shaft BIO-MODULE systems. along with a rotating bucket feed mechanism,shaft bearings. Operation is identical to a B1O-MODULE unit. and drive system. E r A •- DRIVE SYSTEM ' N. r --i i BIO-CLARIFIER B • Jil i 1 SHAFT TANK t (Shown Dotted) L J s- C FEED • NOTE:TANK CONTOUR MAY BE CIRCULAR OR TRAPEZOIDAL BIO-MODULE SHAFT Information BIO-MODULE Media Shipping Operating Bucket Feed SHAFTDimension' Surface Weight Weight Motor Capacity Model A B C D E Area.Ft' Lbs.I2l Lbs.31 HP i4t gpd(SI 611-104 10'-8" 14'-4" 6.-8" 6'-6" 4.-9" 28,000 8,300 16,000 3 31,000 611-154 15.-8" 48.000 11,200 26.000 3 62,000 611-204 20.-8" " ' " 68,000 15300 37,000 5 93.0(10 135.000 612-052 5'-8" 7-4" 3.-61/4"3.-3' 2" 3'-3" 4,4001° 4,850 5,000 1/4 8,000 612-104 10.-8" ' 7,900 5.950 7,000 1;2 16,000 612-154 15'-8" ' 13.500 7,300 10,500 3,/4 24.000 32,000 (1)In 2 stages;all others 4 stages. (2)Includes shipping frame. (3)With attached biomass in dewatered tank. (4)230/460 V.3 phase,open drip-proof enclosure. (5)With I,2.3,and 4 buckets,respectively. 8 • -.Y BIO-CLARIFIER SHAFTS -. BIO-CLARIFIER SHAFTS are supplied to be installed in con- The figure below shows the manner in which a BIO-MODULE crete tankage.It includes the sludge scoop mechanism,shaft SHAFT is installed in concrete tankage along with a RIO- bearings,and drive system.Operation is identical to the CLARIFIER SHAFT.This system operates in conjunction with BIO-CLARIFIER. pretreatment and sludge solids disposal or storage facilities. Disinfection can be performed in facilities installed immediately A building should be erected around the system.Covers are adjacent to the final clarifier or in facilities separate from the available from Autotrol to serve this purpose. installation. CHLORINE 1 '-3" CONTACT TANK 1 '-9°—••• [- F (min.) (OPTIONAL) SLUDGE DISCHARGE 1 BIO-MODULE SHAFT TANK [� G (Shown Dotted) \ II - I _ t , 1.41 DRIVE SYSTEM EFFLUENT WEIR SCOOP �.� II r CLARIFIER TANK - . BIO-CLARIFIER SHAFT Information 810 Clarifier Clarifier Sludge Scoop IO- Dimensions 9 SHAFT Overflow Volume Capacity Model • F G Area,Ft? Gal. gpdtrt 631-1 5'-0" 14'-4" 72 2,450 590 631-2 10'-0" I4'-4" 143 4,900 1,180 632-1 5'-0" 7-4" 35 490 590 632.2 10'-0" 7-4" 70 980 1,180 (l)At 4 rph. Motor. 1/4 hp,230/460 V,3 phase. open drip-proof enclosure. Other options available. FEED • A BIO-MC_AJLE AND BIO-MODULE SHAFT LJNFIGURATIONS The following are several suggested configurations in which to cess regardless of the pattern of raw wastewater flow.Septic employ B1O-SURF process equipment for package plant tank construction can be of steel or concrete,depending upon applications.While the configurations of Figures 6, 7.and 8 cost,soil conditions,and regulatory agency requirements. show BIO-MODULE units in steel tankage,they are also i Selection of an appropriate septic tank retention time,when applicable in BIO-MODULE SHAFTS in concrete tankage. I followed by BIO-SURF process secondary treatment,is done primarily on the basis of sludge digestion and storage capacity. Aerobic Pretreatment Field testing has shown that a 12-hour retention time will yield Several aerobic pretreatment alternatives can be utilized to about one year of continuous operation before removal of sludge precede BIO-MODULE units and BIO-MODULE SHAFTS. I for ultimate disposal.On this basis,a 12-hour septic tank These include primary clarifiers,combined primary clarifier and retention time is recommended for most applications. sludge storage(Imhoff-tank)or any of the recently developed During extended periods of little or no wastewater flow,RIO- fine-screening devices.The use of combined primary clarification SURF process effluent can be pumped to the septic tank for and sludge storage with a BID-MODULE unit is shown in recirculation.This will provide sufficient organic matter to Figure 6.Secondary sludge from the BIO-MODULE is returned maintain an active aerobic biomass on the media until normal to the pretreatment system for storage and digestion.Because wastewater flow is resumed.This practice is recommended in package plant applications often experience extreme fluctua- I applications such as recreational areas where wastewater tions in flow,it is often recommended that an aerated flow ' treatment is needed only several days each week. equalization step be utilized after pretreatment before entering the BIO-MODULE unit.This results in a higher treatment capac- I Side-by-Side Configurations ity and permits a more economical design for the BIO-MODULE In the side-by-side configuration(Figure7), units or BIO-MODULE SHAFTS and the subsequent clarifica- igravity wastewater qflow to the BID-MODULE unit is utilized. Rawwv wastewater en- --is, [ion and disinfection steps. ters the septic tank for primary treatment and overflows into the flow equalization tank.The flow equalization tank is connected to the lowest point of the BIO-MODULE feed chamber.At the beginning of a daily flow cycle,the wastewater level in the c+- equalization tank will be at its lowest point.As the flow cycle - I progresses,the equalization tank will begin to fill;and the re 1 rising level in the RIO-MODULEfeed chamber will cause the ow,WC.T ' I .r. _ _ bucket feed mechanism to deliver wastewater at an increasing _ «mot rate.At the end of the period of flow,wastewater in the : equalization tank and feed chamber will be at their highest j levels;and the bucket pump will be pumping at its highest rate. — I During the balance of the daily flow cycle,where there is little E.I .. Mat FROM t9YOWl(.Y.M1E. or no raw waste flow,the level in the equalization tank will be to.......Clair. i pumped down by the bucket pumps until the beginning of SLUMOT M( ION another flow cycle when it is again at its lowest level.Operating in this manner,the BIO-SURE process experiences a cyclic N\ wastewater flow pattern where the peak flow is approximately 1.5 times the average regardless of the pattern of raw waste- water flow.In cases of extreme surges of wastewater which exceed the capacity of the equalization tank the excess can 6 all-MODULE WITH PRIMARY CLARIFIER AND SLUDGE DIGESTION overflow from the feed chamber directly into the stages of media and receive kill secondary treatment. Septic Tank Pretreatment For the range of wastewater flows from 5,000 to 75,000 gpd. I primary treatment and sludge handling can be accomplished simply and effectively with a septic tank A septic tank by itself -SLUDGE FROM noro0TEt is a crude means of wastewater treatment-However,in comb'-,C.AGPitF TO SEPTIC TAM - - nation with BIO-MODULE units or BIO-MODULE SHAFTS, it provides for a very simple total treatment system. ...�-- —� /,�,,, Two configurations of a treatment system with a BID-MODULE and septic tank are shown conceptually in Figures 7 and 8.For mILGE+T - each of these configurations,the treatment system is con- 1,— . - --- — E"-E" structed in two parts—the septic tank and a flow equalization �'"",/"4" 'Eo ALUAT o/ ` .1G.wwct - eq rG t ,/10/ tank For low wastewater flows,these two tanks may be con- '' , «,.//,/y j } tamed in a single tank For higher flows,they can be separate _ �!11 I tanks.The septic tank portion of the pretreatment system pro- :PTIC TMAtEO ----- -7 j vides for removal of settleable and floatable materials.It also "°FLOW RECYCLE provides for digestion and storage of secondary sludge solids.The flow equalization tank in conjunction with the feed chamber and bucket feed system of the BID-MODULE unit provides a 7 BIO-MODULE UNIT WITH SEPTIC TANK PRETREATMENT relatively uniform flow of wastewater to the BIO-SURF pro- SIDE BY SIDE CONFIGURATION10 • Ji_- -_ Over-and-Under Configuration Comparison of Configurations The over-and-under B1O-MODULE and septic tank configura- A check list of the key features of each configuration is provided tion shown in Figure 8 operates in a fashion similar to that to assist in selecting the appropriate configuration for a specific described for the side-by-side configuration.The major differ- package plant application. ence is the manner in which the wastewater is fed to the BIO-MODULE unit.A submersible pump of somewhat greater I Side-by-Side BID-MODULE capacity than average design flow is placed in the flow equali- zation tank It pumps at a constant rate into the BIO-MODULE feed chamber.An adjustable overflow connection on the feed Flow range up to 90.000 gallons per day. chamber is set at a level where the buckets will pump the l Gravity flow of wastewater. average design flow into the BIO-SURF media sections.and the excess will overflow back into the equalization tank During Insulation against cold weather. periods when wastewater flow is above average,the equalization I Can be completely underground. tank will fill and when flow is below average,the tank will Requires constntction of underground chamber to accept empty.In cases where extreme surges in flow could exceed the RIO-MODULE unit.(This duplicates tankage and capacity of the equalization tank,a second submersible pump increases cost.) is placed in the equalization tank This pump is activated by a high level control and pumps excess flow directly into the first Requires only a very simple cover. stage of media.In the over-and-under configuration,effluent Requires pumping for effluent recycle,when desired. recycle(when used)returns by gravity to the septic tank. Minimum slope of''/A"per foot must be maintained on sludge line. Maximum capacity of flow equalization tank limited by MO[HAMPER available wastewater depth in BID-MODULE feed chamber. ,.r..,". 040..x CONTACT T","... Side-by-Side with BIO-MODULE SHAFT in Concrete Tankage. Flow range up to 100,000 gpd. - - """`"' Gravity flow of wastewater and sludge. r f MAAA,,,.,,, CLAIM!". Insulation against cold weather. Minimum slope must be maintained on sludge line. +WT Conmdion can be completely underground. • A single concrete tank required for RIO-MODULE SHAFT.� w" "10AK^"`A"" I Requires only a simple cover. n I Requires pumping for effluent recycle,when desired. Ie. FIVI N"I NtrR0.flCTCl[ Maximum capacity of flow equalization limited by available MSG.rte.F,.. LOOSE ,"A:r°":N. wastewater depth in feed chamber of concrete tankage. 8 BID-MODULE UNIT N SEPTIC TANK PRETREATMENT Over-and-Under BID-MODULE OVER AND UNDER CONFIGURATION Configuration (Figure 8). Flow range up to 90,0(X)gpd. Requires pumping of wastewater into BIO-MODULE-unit. BIO-MODULE SHAH in Concrete Tankage Requires constniction of building for RIO-MODULE unit. For wastewater flows beyond the range of a single RIO- MODULE system,it is possible to use several RIO-MODULE Gravity return of secondary sludge and effluent recycle (when desired)to septic tank. units in parallel.However,in these cases,it may be more I economical to use one or more BIO-MODULE SHAFTS Full capacity of flow equalization tank can be utilized. mounted in concrete tankage. When using RIO-MODULE SHAFTS in such applications,it is generally recommended that the side-by-side configuration be utilized.For this-application,the bucket feed mechanism, BIO-SURF media.and BIO-CLARIFIER SHAFT are installed in concrete tankage conforming to the shape and dimensions of the RIO-MODULE tankage. For applications where soil conditions do not permit excavation for installation of treatment equipment,a BIO-MODULE installation similar to that shown in Figure 7 can be operated with an above-ground septic tank Operation of the system would be similar to that for the side-by-side configuration with the exception that wastewater would have to be pumped into the septic tank It is also possible to operate a standard BIO- MODULE SHAFT in an above-ground position simply by installing the concrete tankage above ground level. 11 • C Neal Carpenter, President R.Kent . ��' Eugene R Brauer Gordon W.Bruckner E n❑un arc: Mrhi'r.' - Patrick C.Dwyer Robert Shreve C SNeee Dale J.Steichen Robert D.Thomas Gary R WMWolph 3�l't 4444 July 3, 1979 Mr, Douglas Sears Sears Investors 1221 Eighth Avenue Greeley, CO 80631 Dear Mr. Sears: SUBJECT: ALLISON FARMS PROJECT NO. 79 1 ENG 0112 Submitted are the results of our preliminary percolation rate tests at the captioned site. Four 3-foot deep borings were made at the locations of four soils exploration borings. These locations are shown on the accompanying Location Map. The shallow borings were pre-soaked for a 24-hour period prior to the performance of the percolation rate test. The tests were run in compliance with the Weld County Health Department requirements, the results are tabulated as follows: Percolation Rate Boring No. Minutes/Inch Depth of Test 2 6.7 3 3 16.7 3.5 4 5.6 3 11 3.2 3 Groundwater was encountered during our investigation, depth of water and bedrock are shown on the accompanying Boring Log Exhibit. In general , we do not foresee any problems in the construction of leach fields at this site. Naturally, every site will require percolation rate tests in order to adequately size their septic tanks and leach fields to suit their needs. The high density area situated along the west boundary will have to be treated differently due to the lot size restriction. It is recommended that 8-inch pipe and manholes be installed to the City of Greeley Standards. Flow should be to the north into the detention pond-park area where a large septic tank and Rio -Surf unit can be installed. Past experience indicates the State Health Department is favorable toward this type of system over other systems. Mr. Douglas Sears Page 2 July 3, 1979 A monthly monitoring system will have to be incorporated along with application for discharge permit. This can be arranged during the final design for the high density area which is in the future. If you have any questions or need further information, please call this office. Respectfully, ARIX, AA Professional Corporation 152 /4:1.- Arthur F. Uhrich Project Director Enclosure: Exhibit #1 and 2 O O v Erb? w W F .� m c..4.1 _ z0 =e I-, r ri—j r if) t W c] h/... � .CI �// _® & • In 2 • to Z H0 O i— a U O I—, J co _ co U t , o W co U I - _ O U W 0 c» �0 H N to W w' i— = i. a) z ti ti0 elk F-- 2 'X W i3 N O co z W 01 1_ T.N. 4 T.H. 5 • 4870.9 4871 .2 4870 / Y '• T.H. 1 4866.2 _ 7:71 4 7/12 5/12 4865 .8 ' / 4 1/2/011/12. 9 : r /12 9 A4/12 4860 4 9 r �� T,H. 2 15 .' 12/12 15 /222/7 4855 "- 11 :'• 4854.6 T.N. 3 4852, 2 15 :.; 29/6 3 ] ..i 4850 T • 4A8/12 4845 17/12 / ;• •' 10 x 1 5/12 '`:i;] /15 30/12 15 20/9 TEST BORING LOGS 79I ENG 0112 EXHIBIT 2 4855 r-' T.H. 8 4853.5 T.H. 6 4851 . 7 4850 4 '�.� 2/12 4 '8/12 7 4845 9 '9/12 11 — 4840 �— 12 r• ..• • is 129/9 14 — 15 ' x:.,124/12 4835 -- 4830 -- T.H. 7 4826.6 • 4<I9/12 V 8 . 9 ; 7/12 15 ' • '112/12 TEST BORING LOGS 791ENG0112 EXHIBIT 2 4865 4840 T.H. 9 _ 4862.2 - :Li - T.H. 10 4860 4835 4834.6 4 - 2-1/2 ; � - 7 T.H. 11 4855 4830 417/12 4830 - 9 /120/9 _ 02 •:27. 9 4850 ^ 4825 �4 �5�/ � - / :• i - - 14 4845 4820 fg 1 17/6 �' - - i / 4840 - 4815 14 '%I TEST BORING LOGS 79 I ENG 0112 EXHIBIT 2 BROWN, MOIST TO SATURATED SILTY SAND BROWN, VERY MOIST SANDY CLAY • BROWN, VERY MOIST SILTY CLAY WEATHERED CLAYSTONE BEDROCK, GREY-BROWN WEATHERED SANDSTONE BEDROCK, LIGHT BROWN SANDSTONE BEDROCK, LIGHT BROWN • 1 7/12 STANDARD PENETRATION RESISTANCE TEST SHELBY TUBE SAMPLE 10 DEPTH TO GROUNDWATER AT COMPLETION OF BORING • LEGEND • 791ENG 0112 EXHIBIT 2 PRELIMINARY DRAINAGE REPORT FOR ALLISON FARMS SUBDIVISION A Professional Corporation M'X Engineers Architects Planners 2021 Clubhouse Drive Greeley,Colorado 80631 I y ,II 0+1 3 11f_e 3 A Professional Corporation C Neal BakerCerDe x, Go � �; - Engineers Architects Planners N.Kent Baker Engineers hyena R Bauer GordonEon W BryerMter Cale kJ CS then 2021 Clubhouse DMe Robert J Shrew Coale J.SeKnen GreebY•Colorado 60631 Robyn G.Thomu 302 256 eau Gay Si Wo0o10n June 7, 1979 • Mr. Doug Sears Sears Investment Company 1221 8th Avenue Greeley, Colorado 80631 Dear Mr. Sears: SUBJECT: PRELIMINARY DRAINAGE REPORT, ALLISON FARMS SUBDIVISION PROJECT NO. 79 1 ENG 0112 This preliminary drainage report has been prepared for Allison Farms- Subdivision, a part of the North One Half (N 1/2) of Section 16, Township 5 North, Range 66 West of the 6th Principal Meridian. THE SITE The site is currently being used as farm land and is divided into two basins as the runoff is concentrated at 20th Street. The east basin (see Exhibit #1) drains to the intersection of 20th Street and 59th Avenue and drains a total area of 20.5 acres. The west basin drains to the draw on 20th Street near the north quarter corner of the northwest quarter of Section 16. This basin drains a total area of 199 acres of which 108 is proposed to be developed as Allison Farms. The average slope of the west basin is slightly over 3 percent and the average gradient of the east basin is approximately 2.4 per- fi cent. The soils in the area have a rapid infiltration rate with the Soil Conservation Service indicating a rate of 6 to 20 inches per hour. DESIGN CRITERIA Two methods of calculations were used to design the drainage facilities for Allison Farms . To size the detention pond and the outlet works, the Colorado Urban Hydrograph (CUHP) was used because the drainage area that contributes to the west basin is near the 200 acre limitation placed on the rational method. The CUHP is also a more reliable procedure for sizing detention ponds. For small drainage basins within the subdivision the rational method was used to determine peak flows at points of concen- tration. The peak flows were then used to determine depth of flow in the streets and to size culverts. ti t x Jir' p" lq fli 14 I ' 9 y Mr. Doug Sears Page 2 June 7, 1979 Detention storage was determined by the City of Greeley's criteria that dictates storing the 100 year developed storm runoff, while releasing a maximum of the 5 year storm runoff from the undeveloped site. The developer cannot be expected to retain the difference between the 100 year and the 5 year runoff for that part of the basin above the subdivision. Therefore, a 100 year storm hydrograph was developed for the basin above the subdivision and added to the 5 year undeveloped storm hydrograph from the subdivision to determine the maximum release rate from the detention pond. Table one indicates the design data used in the analysis of this basin. ,oli 4''. TABLE 1 ri. DRAINAGE DESIGN DATA ill CUHP EAST BASIN WEST BASIN Drainage Area 20.5 acres 199 acres Return Period - Undeveloped Site 5 years 5 & 100 years Developed Site 100 years 100 years Duration 3 hours 3 hours Infiltration 2 in/hr 2 in/hr ' Percent Pervious - Undeveloped Site 95% 95% Developed Site 73% 73% 13 Pervious Detention 0.40 in. 0.40 in. ` ° Impervious Detention 0.05 in. 0.05 in. 1 1 Length of Basin 0.25 mi . 0.50 mi . Length to Centroid of Basin (LCA) 0.12 mi . .25 mi . RATIONAL Runoff Coefficient (C) 0.30 0.30 Frequency Factor for 100 year flood (Cf) 1.25 1.25 rx 'i', j, I Mr. Doug Sears Page 3 June 7, 1979 RAINFALL DATA (from Greeley Comprehensive Drainage Plan) 2 Year 10 Year 100 Year One Hour 0.79 1.19 2.10 Six Hour 1.25 2.17 3.30 Twenty-Four Hour 1.78 2.50 3.78 Rainfall for the rational method was received from an intensity-duration tabulation developed by the City of Greeley. ANALYSIS All calculations, both CUHP and Rational, are included in Appendix A of this report. The peak flows and drainage areas are also shown on Exhibit 2. The maximum release rate from the east basin was calculated to be 0.93 cfs and for the west basin at 47.5 cfs. To store the 100 year storm on the de- veloped site while releasing at the above rates will require detention storage 1.48 acre feet of storage for the east basin and 7.5 acre feet for the west basin. TABLE 2 COMPUTED HYDROLOGICAL DATA East Basin West Basin Peak Discharge 5 year undeveloped 0.93 cfs 3.39 cfs Runoff Volume 5 year undeveloped 0.10 AcFt 0.51 AcFt Peak Discharge 100 year developed 22.0 cfs 118.6 cfs Runoff Volume 100 year developed 1.58 AcFt 8.10 AcFt Maximum Release Rate from Ponds 0.93 cfs 47.5 cfs - - - - ft 40 tI st14 Mr. Doug Sears Page 4 June 7, 1979 • CONCLUSION AND RECOMMENDATIONS The 100 year storm runoff can be routed through the subdivision without flooding or damaging any structures if the ditches and drainage ways indicated on Exhibit #2 are incorporated in the construction of the development. The maximum release rate from the subdivision, as defined by the City of Greeley criteria, can be obtained by constructing two detention ponds as shown on Exhibit #2. The detention pond for the east basin will be developed in the RV parking lot at the northeast corner of the tract. The depth of water in this pond will be limited to one foot to prevent damage to any vehicles in the lot, but the one foot depth will store the required 1.48 AcFt. Respectfully, ' ARIX, A Professional Corporation dTP%<• 4'EI+E }9 1`J5-S' ' " cYCW tO1 ., 9 8 5 7 et ' Gerald F. Worrall ,(.�, cn� :w l� Colorado Registered Professional Engineer #9857 17^ si��F�nte"i OF C,C\- GFW/pi , . 4.440 e iirAk , t €11 ' � t 1- I lb. It v i __ (:r,, `J ! $ ; I 11 �`/ante •f 'l l . . h r- \ 1 v 1 -- J _ i it( `-'_mac ci Nre . , , -- , ) 1, _lc/yr 1;ri III �Sr �/��--f, / Gravel gz, l°`o . �.+1 -�'• 8/�� 1/4ee ./ rap� / \ti .pe. , \ O \ ,\ \- _r/- ,. —.1 69524 of i \ 485O r yp �� ,p of--N-_, G -IL / / ,a ,o • r �, �^ �\ �I \ � ..��+� l.r�� ---.7.sk, • •II. 1 499c3'. -: : )' x;,90 ` -- - 5 ,F•� !� 1 , &. 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"r-j . _ w —. _ - O 2 O cl d F IL 0 _ O O t A T1 I n n1 r, '� �- C cs N ,,) r, rd ri J r. r ( 1. • J J O r I I_. __I L______ - _.____-.___-__._.-. 0 ar ?`t • illili, V i v 4 IIII I N j 5 I . .'14, File contains oversized map Please see original file C C C I SUBSOIL INVESTIGATION FOR ALLISON FARMS SUBDIVISION A Professional Corporation AI X I Engineers Architects Planners 2021 Clubhouse Drive Greeley,Colorado 80631 C-E Maguire, Inc. Tel. 303/356-4444 Combustion En%lineenng, Inc. 2021 Clubhouse Drive 1 Greeley, Colorado 80631 Li IlIIAGUIRE Architects • Engineers • Planners February 23, 1979 Dean H. Avers & Company 2308 29th Street Suite #1 Greeley, Colorado 80631 Gentlemen: SUBJECT: PROPOSED ESTATE SUBDIVISION PROJECT NO. 79 1 ENG 0112 We are submitting our report of a subsoil investigation as you requested, located in the North Half of the Northeast Quarter (N 1/2 - NE 1/4) and the East Half of the Northwest Quarter (E 1/2 - NW 1/4) Section 16, Township 5 North, Range 66 West of the 6th Principal Meridian Weld County, Colorado. Our report explains the existing subsoil conditions and suggests methods of handling the planning and construction of single family housing. If you have any questions or are in need of further information regarding this report, please feel free to contact us. Respectfully, C- AGUIRE, INC. ,/^NCI Arthur F. Uhrich Project Director AFU/pi r TABLE OF CONTENTS N _ page Scope 1 Field Investigation 1 Laboratory Investigation 2 DISite Conditions 2 Groundwater 2 Subsoils 3 Building Foundations 3 • Floor Slabs and Other Slabs on Grade 4 Treatment of Foundation Soils 5 Sulfate Resistant Cement 5 Limitations 6 Test Boring Locations EXHIBIT 1 Test Boring Logs EXHIBIT 2 Consolidation Tests EXHIBIT 3,4,5 & 6 Moisture Density Relationship EXHIBIT 7 Summary of Laboratory Tests EXHIBIT 8 N U U S N SCOPE This report presents results of our subsoil investigation located in the North Half of the Northeast Quarter IN 1/2 - NE 1/4) and the East Half of the Northwest Quarter (E 1/2 - NW 1/4) Section 16, Township 5 North, Range 66 West of the 6th Principal Meridian Weld County, Colorado. The purpose of this investigation was to determine those soil conditions and characteristics which would affect the utility of the soils and foundation design of the proposed structures. Data gathered through field and laboratory work are summarized and tabulated in Exhibit Nos. 1 through No. 8 attached. FIELD INVESTIGATION Test borings were made February 2, 1979, at the locations shown on Exhibit No. 1, to obtain data concerning existing soil conditions and to obtain samples for laboratory use. 10 holes were drilled with a truck mounted power auger equipped with a four-inch bit. Penetration data were gathered using the Standard Penetration Test, ASTM D 1586. This test is made by driving a two-inch split spoon sampler with a 140-pound weight falling 30 inches. The blows required to drive the sampler 12 inches are referred to in Exhibit No. 2 as blows per foot. The test borings were located to best reflect represen- tative general conditions at the site, and to obtain specific data at each location sampled. Test borings were taken to the approximate depths below the surface shown on Exhibit No. 2. Disturbed samples of each soil type encountered were obtained for laboratory analysis. As each boring progressed, a log was kept on which was recorded such information as field classification of soils, sample locations, depth to groundwater table, if any, and other pertinent data. These logs are reproduced on Exhibit No. 2. IN -1 LABORATORY INVESTIGATION The laboratory phase of the investigation included the verification of field soil classification, determination of soil gradations by mechanical analysis, Atterberg Limits, natural moisture content, and consolidation- swell characteristics of foundation material . These test results are summa- rized on Exhibit No. SITE CONDITIONS The site under investigation is comprised of 160 acres of farm ground which is presently under cultivation. It is located along the south side of West 20th Street approximately one and a quarter miles west of the present City of Greeley limits. It is bounded on the east by 59th Avenue and on the south by Westridge subdivision. The topography is considered gently rolling. A ridge traverses through the eastleg of the area from which drainage flows both northeasterly and north- westerly. Adequate drainage is available provided that proper grading and landscaping are observed. GROUNDWATER Evidence of groundwater was encountered at the time of the investigation at the depths shown on the accompanying test boring log exhibit. It is antici- pated that groundwater is at its lowest level during this time of the year. Accordingly, we recommend the use of an underdrain system constructed in the water main trenches. Each building site with a proposed basement will require a peripheral drain completely around the footing, discharge to the water main trench may be facilitated through the water service trench. This method of construction has proved successful in lowering and stabilizing the groundwater. -2- IMMO SUBSOILS Our analysis of borings and laboratory tests indicate the soils are relatively uniform over the area investigated. -The foundation soils consist of wind deposited silty sands over the majority of the site. This material ranges in thickness from a few feet to the depth investigated. The western portion is near the head of a minor drainage swale that contributes to Sheep Draw. Here the aeolian mantle is relatively thin with a thin layer of alluvium located over the Larimer Formation of claystone, sandstone. The Larimer Formation is relatively inconsistent in depth through the site. It is easily identifiable by the presence of iron-oxide streaks with radon lenses of sandstone. In some cases the claystone was pene- trated and a fine grained sandstone was encountered. The claystone formation ranges from only slightly to highly expansive. Special care should be given to the construction of foundations located in the forma- tion. BUILDING FOUNDATIONS Our analysis of field conditions and test results indicates the use of conven- tional footings located below maximum frost penetration. Footings located in the silty sands and clayey sands should be designed for a maximum allowable bearing capacity of 2,000 pounds per square foot including live load. It must be cautioned that footings should not be placed partially upon the upper mantle of soils and partially upon the claystone bedrock. In such a situation over excavate the bedrock at least 3 feet and replace with non-swelling granular backfill compacted to at least 95% of maximum dry density as esta- blished in accordance with ASTM D698. Footings on compacted fill should be designed for a maximum allowable bearing capacity of 2,000 pounds per square foot. -3- S Footings located solely on bedrock should be designed for a maximum allowable bearing capacity of 15,000 pounds per square foot including live load. A dead load of 4,000 pounds per square foot should be maintained in order to minimize uplift pressure. FLOOR SLABS AND OTHER SLABS ON GRADE The foundation soils in some areas are subject to volume change and since little uplift pressure or differential settlement is required to cause un- sightly cracks in floor slabs, the following precautionary measures are deemed necessary: 1 . In areas where floor slabs are located on the claystone bedrock, over-excavate at least three feet and replace material with non- swelling granular backfill . The backfill should be placed in loose lifts not to exceed 8 inches and compacted to at least 90% of maximum dry density. 2. Preclude the entrance of an outside water source underneath floor slabs. 3. Eliminate underslab plumbing where possible and where unavoidable thoroughly pressure test and take other precaution necessary to • minimize leaks. 4 . Separate floor slabs completely from bearing walls, columns and footings. 5. Appropriate provisions should be made in large floor slabs for shrink- age cracks. -4- TREATMENT OF FOUNDATION SOILS Precautions should be taken to assure that the moisture content of the foundation soils is maintained at a relatively constant level . Excava- tions shall not be allowed to remain open long enough to allow appreciable drying below natural moisture content, and the exposed foundation material should be protected from wetting from any outside source. Where shallow bedrock is near the footing elevation, the conventional method of water settling backfill should be avoided. Backfill should be placed in loose lifts of 8 to 12 inches and compacted to at least 90% of maximum dry density at moisture contents of at least 2% over optimum. Backfilling should be continued until there is at least a 10% slope away from the house in the first 20 feet. Shrubbery and plantings requiring heavy watering should be placed in beds located away from the limits of backfill in order to minimize the migration of water to the footings. Wetting of foundation soils should be prevented after construction. Methods of accomplishing this include thorough compaction of all backfill around structures, provisions for discharge of roof downspouts and other water collection systems well beyond the limits of all backfill, and any other procedures deemed necessary to maintain a stable moisture content. Excavations should be made only large enough to provide necessary working space in order to hold the area requiring backfilling to a minimum. SULFATE RESISTANT CEMENT Analysis indicates a sulfate concentration in excess of 0.10 percent water soluble sulfate (SO4) in the soil samples. Therefore, Type II cement should be used in concrete exposed to this soil . -5- a LIMITATIONS The exploratory data presented in this report were collected to help develop designs and cost estimates for this project, and thus may not represent adequate information for indicating underground conditions for contractor bidding or construction. We recommend considering exploratory work to reveal underground conditions well enough to enable contractors to more accurately evaluate conditions for bidding and execution of work after work to reveal underground conditions well enough to enable contractors to more accurately evaluate conditions for bidding and execution of work after designs have been prepared. Professional judgements on design alternatives and criteria are presented in this report. The judgements are based upon our evaluation of actual conditions encountered at the location indicated herein, and upon our extrapolations thereof, together with our interpretations of conditions generally characteristic of this area. We do not warrant the accuracy of such extrapolations and interpretations beyond the limits of the tests performed or where actual physical conditions were not observed. Test borings drilled for this investigation were spaced to obtain a reason- ably accurate respresentation of subsurface conditions for design purposes. Variations from the conditions disclosed which were not indicated by the test explorations frequently occur and quite often these variations are sufficient to necessitate modifications in design. Therefore, if different materials are encountered the owner or builder should be certain that the foundation conditions are adequate and within the scope of this report prior to proceeding with any construction. -6- 1l.. Under the above conditions, it is important that we inspect the subsurface materials exposed in excavations to take advantage of all opportunities to recognize differing conditions- and minimize the risk of having undetected conditions which would affect the performance of the facility. If you have any questions or are in need of further information regarding this report, please feel free to contact us. Respectfully, C-E MAGUIRE, INC. Prepared by: 0..Ate.....Fiasp, Arthur F. Uhrich Approved by: a: C - t?RF.\`r ON eorge . Kellison, P.E. 7(;/C � O GBK/pi ' 1 ; s� yj�JO 11: 0��O -7- 0 rak O tli J i v Q C m i _G1) Z� � gu= w� ill a. v a i z0 0 I-- Q U O H = U) (.1) (� o ct X z 0 - U W Fa F- a (4-10 f co r rn w I z� r co x H� z ® H z c4.,( U 57< ' N a Z W ti w■ T.H. 4 T.H. 5 4870.9 4871 .2 4870 T.H. 1 4866.2 4 7/12 4 ,5/12 4865 / • / • 8 i 4 1/2 /1 11/12 9 '1 `4/12 / 4/12 4860 �4 • • �•j / f 9 / T.H. 2 15 12/12 15 (.•122/7 4855 11 :f 4854.6 13 T.H. 3 4852.2 15 29/6 3 j 4850 5 �, / 4 /<j 8/12 9 4845 17/12 /. :, 10 A 5/12 15 "' 30/12 15 J,:., 20/9 TEST BORING LOGS 791 ENG 0112 EXHIBIT 2 � rr a 4855 T.H. 8 4853.5 T.H. 6 4851 .7 4850 tr 4 /' .' 2/12 4 18/12 7 4845 ■- • 4 ;? 9 / 11 39/12 - 4840 12 �. 15 / 129/9 15 x/24/12 4835 - 4830 T.H. 7 4826.6 4 I9/12 8 . 9 ' lc/12 2 15 :1 12/12 TEST BORING LOGS 79IENGOII2 EXHIBIT 2 11 4865 4840 T.H. 9 I4862.2 ' 4860 T.H. 10 4835 4834.6 1 2-1/2 7 4855 4830 4 17/12 T483011 9 • 20/9 2 4850 4825 9 ;� •y 14 15 � �1 / : i 14 4845 4820 15 17/6 11 • 4840 4815 14 TEST BORING LOGS 79 1 ENG 0112 EXHIBIT 2 BROWN , MOIST TO SATURATED SILTY SAND BROWN, VERY MOIST SANDY CLAY BROWN, VERY MOIST SILTY CLAY WEATHERED CLAYSTONE BEDROCK, GREY-BROWN V/i WEATHERED SANDSTONE BEDROCK, LIGHT BROWN SANDSTONE BEDROCK, LIGHT BROWN 1 7/12 STANDARD PENETRATION RESISTANCE TEST SHELBY TUBE SAMPLE 10 DEPTH TO GROUNDWATER AT COMPLETION OF BORING LEGEND 79 I ENG 0112 EXHIBIT 2 r ?" i ` • NELSON, HALEY, PATTERSON and QUIRK, INC. ! • I CONSOLIDATION TEST ` N • 1.0 -- —�_. Sett]_er.er t lwid _constAnt-� _-- --I I pressure dde; t4 wettinig 0 2.0 , :4(13N.„ i Cao: , - 0 3.0 IN__(..)__________Lf v --, I I e 4.0 ---x _ a _ 1 I . i 1 1 2 3 4 567891 2 3 4 567891 2 3 4 567891 (x 100) (x 1,000) (x 10,000) Pounds per square foot T.H. 2 @ 4' APPLIED LOAD In-place dry density 106.9#/ft3 Natural moisture 15.1% Voids Ratio 0.54 Soil Type SM 79 1 ENG 0112 Exhibit f!3 • NELSON, HALEY, PATTERSON and QUIRK, INC. I i CONSOLIDATION TEST I I I P ______ I . 1 _ _ :xR-InLa_'_uPd?r Sonst tnt— ---- 1 _ lressure cub to wetti m 1 .0 _T q r— —_, i 1 , z 0.0 O ....,_ \------.., I1rt , , E ---rte- { --- O_� ' i { I _ I ! a 0 2.0 ---- I -- �\\I ,_I L_ III 1 2 3 4 567891 2 3 4 567891 2 3 4 567891 - (x 100) (x 1,000) (x 10,000) Pounds per square foot 1 @ 8' APPLIED LOAD place dry density 109.2#/ft3 ural moisture 12.1% ds Ratio 0.54 1 Type CH • 1 Er1G 0112 Exhibit 114 r 1 1 NELSON, HALEY, PATTERSON and QUIRK, INC. i 1 i • I CONSOLIDATION TEST . I nail oN llldlr conStapt pressure id1. .e to wettinn • 1 i i 0.0 cam . i I 1 1 0 1 .0 1 I____ \-- 0 2.0 I I 11 I � I . Et Hi 7-1 --- 1 2 3 4 5 6 7 89 1 2 3 4 5 6 78 91 2 3 4 5 6 7 891 (x 100) (x 1,000) (x 10,000) Pounds per square foot APPLIED LOAD 10 0 9' )lace dry density 103.7#/ft3 Iral moisture 25.0% Is Ratio 0.62 I Type ML I ENG 0112 Exhibit #5 s r NELSON, HALEY, PATTERSON and QUIRK, INC. CONSOLIDATION TEST - f -------r- 0 0 i I '1 Exnansi -_nOid er constant i 2.0 pressor- doe Ito wetting V 41 • 4.0 1 2 3 4 567891 2 3 4 567891 2 3 4 567891 (x 100) (x 1,000) (x 10,000) Pounds per square foot APPLIED LOAD . 9@14' place dry density 106.5#/ft3 Jra1 moisture 16.2% Is Ratio 0.58 I Type CH I ENG 0112 Exhihit #6 NELSON, HALEY, PATTERSON and QUIRK, INC. Engineering Consultants MOISTURE-DENSITY RELATIONSHIP ASTM D-698 AASHO Method A CLIENT Avers & Associates PROJECT Subdivision on 20th Street JOB NC. 79 1 ENG 0112 LOCATION Vicinity of T.H. #3 DATE Feb. 14, 1979 Soil Type SM % 200 EL PI Gravel $ Sand i Natural Moisture 13.2 0 MOISTURE - PER CE:7, WEIGHT ._4 4 �i , JJ +t { , . a I a s r { 4 -+ , _ -- . . � 1 ... _ -1- -_ ti• -..-_. __l u t • 110.0 I t to 105.0 1 ! _ j+.11 - - 111 .... . I . 1-.. 1 8 10 12 14 16 18 Maximum Dry Density 110. 1 Ibsift3 Optimum Moisture 12. 8 `v From Depth EXHIBIT 7 • • n v • >,v F .r c V in 1n a c__) o T • Y Y r W o C U C J N O) 1,-. in L6 CU U • L0 • 1 M t0 O • O O O 0 I $. .-� .••-• C i O� • C O - "Cr N CO •r •r Lti LP I VD U) 4-) -r Y 1 r oro 0 0 0 0 • o) Y O > Z C C O N •r •r 0) CO W ri LO V in V) F-- F- L in in to CO N LO Q W N C O LO .-I V in CO (A W O_ O_ O • •-• 2 N • F- N O N Vl N W Y • 4) O rZ-ii Y L-� Z r X r• 0. •--1 Y V) N V C) • d O J V) Y •r-O N Z Z 0 N JO — Y C N N C •r O E N .-• L Cl) •r 10 y X J r O W O_ O S- >> 0 O N Y C L rci• 41 Y0 Y V C - CU an O• CO O t C Q J•E U) Z Z in in N Q- E Lf) in l0 N in i 0 ▪ J C) 1U L N n J it O S- C O 28 a N C r- .-• •--r• • N O C. O C • t L Y N N L0 N in in V Y .r C b 0 0 L a f (..) 6) 4) 3 Y C an = •-•-• Y 0 in U .C Y — 3 C Y W V O) •--1 Y N w a N O N N N U1 C. CO t - H Y Y 0 C) • O N ✓ O N N •cl• .-1 O) Y O Z O X = Z W • • Hello