Area of proposed extraction = 22.6ha (56 acres)
1968 claimed saleable aggregate resource = 17.15 million tons
2011 claimed saleable aggregate resource = 7.25 million tonnes
2015 claimed saleable aggregate resource = 1.66 million tonnes
2017 claimed saleable aggregate resource = 1.2 million tonnes
2021 claimed saleable aggregate resource = 1.06 million tonnes
Reduction in saleable aggregate from 2011 geological statement = 85%
Reduction in saleable aggregate from 2015 planning application = 36%
Density = 1.9 tonnes/m3
Waste factor = 20%
Extraction level = maximum water table
Phase 1 as-dug = 238,000 tonnes
Phase 2 as-dug = 406,000 tonnes
Phase 3 as-dug = 686,000 tonnes
Average depth topsoil and overburden to be removed to uncover sand and gravel = 2.65m
Average depth of sand and gravel = 3.1m
Return haul route to Hillhead, Uffculme, for processing = 46.8 miles
Number of 28.5 tonne loads of as-dug aggregate (including 20% waste) = 46,667 (previously 52,632)
Total haulage distance of as-dug aggregate = 2.18 million miles (previously 2.46 million miles)
Maximum HGV movements per day = 216
Maximum HGV movements per hour = 20
Timeframe = 10 years + 2 years restoration
Height of site = 125-165 mAOD
Number of years Straitgate Farm owned by Holcim and its antecedent companies = 60
Time from 2015 application to refusal by Devon County Council = 78 months
Time from 2015 application to approval by Planning Inspectorate = 91 months
Time from 2015 application to relinquishment = 120 months
Average determination time for sand and gravel quarries = 23 months
Private water supplies at risk = more than 120 people, plus Cadhay estate and several businesses
Mature hedgerows to be lost = 1590m
Ancient woodland areas with wetland habitats reliant on water from Straitgate = 2
Agricultural land = BMV Grade 2 & 3(a)
Monitoring boreholes = 18
Nearest property = 70m
Protected species = dormice, bats (11+ species)
Listed heritage assets affected = 3
Airport safeguarding and consultation zone = yes
Height of flight path above Straitgate Farm for planes landing at Exeter Airport = 195m
Planning applications = 1967, 2015, 2017
Public Inquiries = 1968, 2002, 2016, 2022
Public Consultations = too many to count
Devon sand and gravel sales in 2023 = 0.370 million tonnes
10 year sand and gravel sales average = 0.505 million tonnes
Sand and gravel landbank in 2023 based on 10 year sales average = 7.5 years
Current Minerals Plan = 2011-2033
Most recent Devon Local Aggregate Assessment = 12th 2013-2022
UK sand and gravel extracted in 2023 = 37.4 million tonnes
Holcim UK/Aggregate Industries CEOs from 2010 to date = 6
